CN108974239A - Bicycle rear sprocket assembly and bicycle drivetrain - Google Patents

Bicycle rear sprocket assembly and bicycle drivetrain Download PDF

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Publication number
CN108974239A
CN108974239A CN201810466606.2A CN201810466606A CN108974239A CN 108974239 A CN108974239 A CN 108974239A CN 201810466606 A CN201810466606 A CN 201810466606A CN 108974239 A CN108974239 A CN 108974239A
Authority
CN
China
Prior art keywords
sprocket wheel
bicycle rear
sprocket
bicycle
assembly according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810466606.2A
Other languages
Chinese (zh)
Other versions
CN108974239B (en
Inventor
藤田宽司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimano Inc
Original Assignee
Shimano Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US15/608,924 external-priority patent/US11332213B2/en
Priority claimed from US15/608,915 external-priority patent/US11059541B2/en
Priority claimed from US15/673,346 external-priority patent/US10377174B2/en
Priority claimed from US15/686,177 external-priority patent/US11179967B2/en
Priority claimed from US15/686,179 external-priority patent/US11220309B2/en
Priority claimed from US15/851,781 external-priority patent/US10946931B2/en
Priority claimed from US15/851,785 external-priority patent/US10752320B2/en
Priority to CN202110824666.9A priority Critical patent/CN113581359B/en
Application filed by Shimano Inc filed Critical Shimano Inc
Publication of CN108974239A publication Critical patent/CN108974239A/en
Publication of CN108974239B publication Critical patent/CN108974239B/en
Application granted granted Critical
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/02—Hubs adapted to be rotatably arranged on axle
    • B60B27/04—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/30—Chain-wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/02—Hubs adapted to be rotatably arranged on axle
    • B60B27/023—Hubs adapted to be rotatably arranged on axle specially adapted for bicycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/02—Hubs adapted to be rotatably arranged on axle
    • B60B27/04—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets
    • B60B27/047—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets comprising a freewheel mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/121—Rear derailleurs
    • B62M9/124—Mechanisms for shifting laterally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M2009/005—Details of transmission chains specially adapted for bicycles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Gears, Cams (AREA)
  • Transmissions By Endless Flexible Members (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

Bicycle rear sprocket assembly is configured for mount to the sprocket wheel support ontology of bicycle rear-hub component.Bicycle rear sprocket assembly includes multiple bicycle chainwheels.Multiple bicycle chainwheels include the first sprocket wheel and the second sprocket wheel.First sprocket wheel includes the first opening with the first minimum diameter, and the first minimum diameter is less than the minimum outer diameter of the sprocket wheel support ontology of bicycle rear-hub component.Second sprocket wheel includes the second opening and at least ten inner spline gears.Second opening has the second minimum diameter of the minimum outer diameter of the sprocket wheel support ontology equal to or more than bicycle rear-hub component.At least ten inner spline gears are configured to support body engagement with the sprocket wheel of bicycle rear-hub component.

Description

Bicycle rear sprocket assembly and bicycle drivetrain
Cross reference to related applications
The application is the U.S. Patent Application No. 15/712,388 part continuation application that September in 2017 is submitted on the 22nd. Content of the application is incorporated herein by being cited in full text.
Technical field
The present invention relates to bicycle rear sprocket assemblies and bicycle drivetrain.
Background technique
Cycling is becoming the entertainment form and the vehicles being becoming increasingly popular.In addition, cycling is As the competitive sport welcome by amateur and professional person very much.No matter bicycle be for entertaining, traffic or competing Match, bicycle industry is all in all parts for continuously improving bicycle.A kind of bicycle assembly parts redesigned extensively It is rear sprocket assembly.
Summary of the invention
First scheme according to the present invention, bicycle rear sprocket assembly are configured for mount to the chain of bicycle rear-hub component Wheel support ontology.The bicycle rear sprocket assembly includes multiple bicycle chainwheels.Multiple bicycle chainwheels include the first sprocket wheel With the second sprocket wheel.First sprocket wheel includes the first opening, and first opening has the first minimum diameter, first minimum diameter Less than the minimum outer diameter of the sprocket wheel support ontology of the bicycle rear-hub component.Second sprocket wheel is including the second opening and extremely Few ten inner spline gears.Second opening has the second minimum diameter, second minimum diameter be equal to or more than it is described from The minimum outer diameter of the sprocket wheel support ontology of driving rear drum component.At least ten inner spline gear be configured to it is described from The sprocket wheel of driving rear drum component supports body engagement.
Using the bicycle rear sprocket assembly according to first scheme, it is smaller that the first minimum diameter allows the first sprocket wheel to have Pitch diameter.This makes the gear bands of bicycle rear sprocket assembly wider.In addition, with including nine or less inner spline gears Sprocket wheel compare, at least ten inner spline gears of the second sprocket wheel, which reduce, is applied to each of at least ten inner spline gears Rotary force.This improves the durability of the second sprocket wheel, and/or in the case where not reducing the durability of the second sprocket wheel, improves The freedom degree of the material selection of second sprocket wheel.
Alternative plan according to the present invention, the bicycle rear sprocket assembly according to first scheme further include locking component.Lock Determining component includes tubular body, male screw portion and radial projection.Described in being installed in the bicycle rear sprocket assembly voluntarily In the state of vehicle rear drum component, the tubular body extends through first opening of first sprocket wheel.The tubulose Ontology includes first axis end and the second axial end portion.Second axial end portion is about the bicycle rear sprocket assembly Center of rotation axis axial direction on it is opposite with the first axis end.It is installed in the bicycle rear sprocket assembly In the state of the bicycle rear-hub component, the first axis end is positioned to than second axial end portion closer to institute State the axial centre plane of bicycle rear-hub component.The male screw portion is arranged to the first axis end, in institute It states bicycle rear sprocket assembly to be installed in the state of the bicycle rear-hub component, with the bicycle rear-hub component The female portion engagement of the sprocket wheel support ontology.The radial projection is relative to the center of rotation axis from described second Axial end portion extends radially outwardly, to be installed to the state of the bicycle rear-hub component in the bicycle rear sprocket assembly Under, limit axial movement of first sprocket wheel relative to the sprocket wheel support ontology of the bicycle rear-hub component.
Using the bicycle rear sprocket assembly according to alternative plan, smaller sprocket wheel can be installed to bicycle rear-hub Component.This makes the gear bands of bicycle rear sprocket assembly wider.
Third program according to the present invention is configured so that described first according to the bicycle rear sprocket assembly of alternative plan Sprocket wheel includes first being facing inwardly toward side and the first outwardly facing side, first outwardly facing side on the axial direction with institute Stating first, to be facing inwardly toward side opposite.The radial projection is configured to abut against first chain in first outwardly facing side Wheel.
Using the bicycle rear sprocket assembly according to third program, smaller sprocket wheel can be installed to bicycle rear-hub Component.This makes the gear bands of bicycle rear sprocket assembly wider.
Fourth program according to the present invention, according to first into third program either a program bicycle rear sprocket assembly structure Cause so that second sprocket wheel on the axial direction of the center of rotation axis about the bicycle rear sprocket assembly with institute It is adjacent to state the first sprocket wheel, and does not have other sprocket wheel between first sprocket wheel and second sprocket wheel.
Using the bicycle rear sprocket assembly according to fourth program, smaller sprocket wheel can be installed to bicycle rear-hub Component.This makes the gear bands of bicycle rear sprocket assembly wider.
5th scheme according to the present invention, according to the bicycle rear sprocket assembly structure of either a program in first to fourth scheme It causes so that first sprocket wheel is facing inwardly toward side and the first outwardly facing side including first, first outwardly facing side is being closed It is opposite in being facing inwardly toward side with described first on the axial direction of the center of rotation axis of the bicycle rear sprocket assembly.It is described First sprocket wheel includes the first torque transfer arrangement, and first torque transfer arrangement, which is arranged to described first, is facing inwardly toward side, with Torque will be scrunched and be directly or indirectly transmitted to the sprocket wheel support ontology.
Using the bicycle rear sprocket assembly according to the 5th scheme, smaller sprocket wheel can be installed to bicycle rear-hub Component.This makes the gear bands of bicycle rear sprocket assembly wider.
6th scheme according to the present invention is configured so that described first according to the bicycle rear sprocket assembly of the 5th scheme Torque transfer arrangement includes that at least ten first torques transmit tooth.
Using the bicycle rear sprocket assembly according to the 6th scheme, with the sprocket wheel phase for including nine or less inner spline gears Reduced than at least ten first torques of, the first sprocket wheel transmitting tooth be applied to it is each at least ten first torques transmitting tooth A rotary force.This improves the durability of the first sprocket wheel, and/or in the case where not reducing the durability of the first sprocket wheel, mentions The high freedom degree of the material selection of first sprocket wheel.
7th scheme according to the present invention, according to the bicycle rear sprocket assembly of the 6th scheme be configured so that it is described at least The sum of ten the first torque transmitting teeth is equal to or more than 20.
Using the bicycle rear sprocket assembly according to the 7th scheme, the durability of the first sprocket wheel can be improved.
Eighth aspect according to the present invention, according to the bicycle rear sprocket assembly structure of either a program in the first to the 7th scheme It causes so that the sum of at least ten inner spline gear of second sprocket wheel is equal to or more than 20.
Using the bicycle rear sprocket assembly according to eighth aspect, the durability of the second sprocket wheel can be improved.
9th scheme according to the present invention is configured so that described second according to the bicycle rear sprocket assembly of eighth aspect The sum of at least ten inner spline gear of sprocket wheel is equal to or more than 28.
Using the bicycle rear sprocket assembly according to the 9th scheme, the durability of the second sprocket wheel can be improved.
Tenth scheme according to the present invention, according to the bicycle rear sprocket assembly structure of either a program in the first to the 9th scheme Cause so that second sprocket wheel at least ten inner spline gear have first in angular pitch and with described first in tooth pitch Angle it is different second in angular pitch.
It, can be easily by bicycle rear sprocket assembly with correct using the bicycle rear sprocket assembly according to the tenth scheme Circumferential position be attached to bicycle rear-hub component.
11st scheme according to the present invention, according to the bicycle rear sprocket assembly of either a program in the first to the tenth scheme It is configured so that at least one of described at least ten inner spline gear of second sprocket wheel has the first spline-shaped, it is described First spline-shaped is different from another the second spline-shaped at least ten inner spline gear.
It, can be easily by bicycle rear sprocket assembly with just using the bicycle rear sprocket assembly according to the 11st scheme True circumferential position is attached to bicycle rear-hub component.
12nd scheme according to the present invention, according to the bicycle rear sprocket group of either a program in the first to the 11st scheme Part is configured so that at least one of described at least ten inner spline gear of second sprocket wheel has the first spline size, institute It is different from another the second spline size at least ten inner spline gear to state the first spline size.
It, can be easily by bicycle rear sprocket assembly with just using the bicycle rear sprocket assembly according to the 12nd scheme True circumferential position is attached to bicycle rear-hub component.
13rd scheme according to the present invention, according to the bicycle rear sprocket group of either a program in the first to the 12nd scheme Part is configured so that total number of teeth of first sprocket wheel is equal to or less than 10.
Using the bicycle rear sprocket assembly according to the 13rd scheme, smaller sprocket wheel can be installed to flower after bicycle Drum component.This makes the gear bands of bicycle rear sprocket assembly wider.
14th scheme according to the present invention, according to the bicycle rear sprocket group of either a program in the first to the 13rd scheme Part is configured so that first sprocket wheel is the minimum sprocket wheel in the bicycle rear sprocket assembly.
Using the bicycle rear sprocket assembly according to the 14th scheme, smaller sprocket wheel can be installed to flower after bicycle Drum component.This makes the gear bands of bicycle rear sprocket assembly wider.
15th scheme according to the present invention, according to the bicycle rear sprocket group of either a program in the first to the 14th scheme Part further includes sprocket support member, and the sprocket support member includes the chain being configured to the bicycle rear-hub component At least ten inner spline gears of wheel support body engagement.The multiple bicycle chainwheel includes being configured and attached to the sprocket wheel branch Support the additional sprocket wheel of component.
Using the bicycle rear sprocket assembly according to the 15th scheme, the weight of bicycle rear sprocket assembly can be mitigated.
16th scheme according to the present invention is configured so that described according to the bicycle rear sprocket assembly of the 15th scheme Total number of teeth of additional sprocket wheel is equal to or more than 46.
Using the bicycle rear sprocket assembly according to the 16th scheme, additional sprocket wheel makes the shelves of bicycle rear sprocket assembly Position range is wider.
17th scheme according to the present invention is configured so that described according to the bicycle rear sprocket assembly of the 15th scheme Total number of teeth of additional sprocket wheel is equal to or more than 50.
Using the bicycle rear sprocket assembly according to the 17th scheme, additional sprocket wheel makes the shelves of bicycle rear sprocket assembly Position range is wider.
18th scheme according to the present invention, according to first scheme into the 17th scheme chain after the bicycle of either a program Wheel assembly is configured so that the multiple bicycle chainwheel includes multiple second sprocket wheels for being set as second sprocket wheel.It is described more A second sprocket wheel includes being configured to support described in body engagement at least with the sprocket wheel of the bicycle rear-hub component Ten inner spline gears.
Using the bicycle rear sprocket assembly according to the 18th scheme, the durability of multiple second sprocket wheels can be improved.
19th scheme according to the present invention, the bicycle rear sprocket assembly according to the 18th scheme further include sprocket wheel support Component, the sprocket support member include being configured to support body engagement with the sprocket wheel of the bicycle rear-hub component At least ten inner spline gears.The multiple bicycle chainwheel includes the additional chain for being configured and attached to the sprocket support member Wheel.
Using the bicycle rear sprocket assembly according to the 19th scheme, the weight of bicycle rear sprocket assembly can be mitigated.
20th scheme according to the present invention, according to the bicycle rear sprocket group of either a program in the first to the 19th scheme Part is configured so that the sum of the multiple bicycle chainwheel is equal to or more than 10.
Using the bicycle rear sprocket assembly according to the 20th scheme, the speed of bicycle rear sprocket assembly can be increased Grade.
21st scheme according to the present invention, according to the bicycle rear sprocket of either a program in the first to the 20th scheme Component is configured so that the sum of the multiple bicycle chainwheel is equal to or more than 11.
Using the bicycle rear sprocket assembly according to the 21st scheme, bicycle rear sprocket assembly can be further increased Velocity stage.
22nd scheme according to the present invention, according to chain after the bicycle of either a program in the first to the 21st scheme Wheel assembly is configured so that the sum of the multiple bicycle chainwheel is equal to or more than 12.
Using the bicycle rear sprocket assembly according to the 22nd scheme, bicycle rear sprocket assembly can be further increased Velocity stage.
23rd scheme according to the present invention, according to chain after the bicycle of either a program in the first to the 22nd scheme Wheel assembly is configured so that the multiple bicycle chainwheel includes the additional sprocket wheel with maximum tooth tip diameter.Second sprocket wheel At least ten inner spline gear have internal spline bottom diameter.The ratio of internal spline bottom diameter and the maximum tooth top diameter Range be 0.15 to 0.18.
Using the bicycle rear sprocket assembly according to the 23rd scheme, the durability of the second sprocket wheel can be improved, and Keep the gear bands of bicycle rear sprocket assembly wider.
24th scheme according to the present invention, according to chain after the bicycle of either a program in the first to the 23rd scheme Wheel assembly further includes additional sprocket wheel.The additional sprocket wheel includes promoting bicycle chain from the additional sprocket shift to adjacent At least one first gear shift compared with the first gear-change operation of minor sprocket promotes region, and region is promoted to promote the bicycle chain At least one second gear shift for being shifted to the second gear-change operation of the additional sprocket wheel from the adjacent relatively minor sprocket promotes area Domain.
Using the bicycle rear sprocket assembly according to the 24th scheme, the first gear-change operation and can be smoothly carried out Two gear-change operations.
25th scheme according to the present invention, is configured to make according to the bicycle rear sprocket assembly of second or third program Obtaining the tubular body has the first external diameter for being equal to or less than 27mm.
Using the bicycle rear sprocket assembly according to the 25th scheme, after can use locking component relative to bicycle Flower-drum component keeps bicycle rear sprocket assembly, and makes the gear bands of bicycle rear sprocket assembly wider.
26th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 25th scheme The first external diameter is equal to or more than 26mm.
Using the bicycle rear sprocket assembly according to the 26th scheme, the intensity of locking component can be maintained or improve, And keep the gear bands of bicycle rear sprocket assembly wider.
27th scheme according to the present invention, according to second, third, the 25th or the 26th scheme bicycle Rear sprocket assembly is configured so that the radial projection has the second external diameter equal to or less than 32mm.
Using the bicycle rear sprocket assembly according to the 27th scheme, after can use locking component relative to bicycle Flower-drum component keeps bicycle rear sprocket assembly, and makes the gear bands of bicycle rear sprocket assembly wider.
28th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 27th scheme The second external diameter is equal to or more than 30mm.
Using the bicycle rear sprocket assembly according to the 28th scheme, the intensity of locking component can be maintained or improve, And keep the gear bands of bicycle rear sprocket assembly wider.
29th scheme according to the present invention, according to any in second, third and the 25th to the 28th scheme The bicycle rear sprocket assembly of scheme is configured so that the locking component has tool engaging portion.
It, can be by using tool engaging portion easily using the bicycle rear sprocket assembly according to the 29th scheme It is attached locking component.
30th scheme according to the present invention, according to the bicycle rear sprocket of either a program in the first to the 29th scheme Component is configured so that the multiple bicycle chainwheel includes being set as multiple first sprocket wheels of first sprocket wheel and being set as Multiple second sprocket wheels of second sprocket wheel.The multiple first sprocket wheel includes first opening.The multiple second chain Wheel includes second opening and is configured to support the institute of body engagement with the sprocket wheel of the bicycle rear-hub component State at least ten inner spline gears.
Using the bicycle rear sprocket assembly according to the 30th scheme, multiple first sprocket wheels and multiple second sprocket wheels make certainly The gear bands of driving rear sprocket assembly are wider.
31st scheme according to the present invention is configured so that institute according to the bicycle rear sprocket assembly of the 15th scheme It states additional sprocket wheel and the sprocket support member is attached to by adhesive.
Using the bicycle rear sprocket assembly according to the 31st scheme, due to not using any metal fastenings, so The weight of bicycle rear sprocket assembly can further be mitigated.
32nd scheme according to the present invention, according to the 15th scheme or the bicycle rear sprocket group of the 31st scheme Part is configured so that the sprocket support member by including that the nonmetallic materials of resin material are made.
Using the bicycle rear sprocket assembly according to the 32nd scheme, it can further mitigate bicycle rear sprocket assembly Weight.
33rd scheme according to the present invention, according to chain after the bicycle of either a program in the first to the 32nd scheme Wheel assembly be configured so that at least two inner spline gears at least ten inner spline gear of second sprocket wheel relative to The center of rotation axis of the bicycle rear sprocket assembly with angular pitch in first circumferentially.The model of angular pitch in described first Enclose is 5 degree to 36 degree.
Using the bicycle rear sprocket assembly according to the 33rd scheme, the durability of the second sprocket wheel can be improved.
34th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 33rd scheme The range of angular pitch is 10 degree to 20 degree in described first.
Using the bicycle rear sprocket assembly according to the 34th scheme, the durable of the second sprocket wheel can be further improved Property.
35th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 34th scheme Angular pitch is equal to or less than 15 degree in described first.
Using the bicycle rear sprocket assembly according to the 35th scheme, the durable of the second sprocket wheel can be further improved Property.
36th scheme according to the present invention, according to the bicycle of either a program in the 33rd to the 35th scheme Rear sprocket assembly is configured so that at least other two internal spline at least ten inner spline gear of second sprocket wheel Tooth relative to the center of rotation axis with angular pitch in second circumferentially.Angular pitch and first internal tooth in described second Elongation is different.
Using the bicycle rear sprocket assembly according to the 36th scheme, can easily by bicycle rear sprocket assembly with Correct circumferential position is attached to bicycle rear-hub component.
37th scheme according to the present invention, according to chain after the bicycle of either a program in the first to the 36th scheme Wheel assembly is configured so that at least ten inner spline gear of second sprocket wheel has the internal spline equal to or less than 34mm Bottom diameter.
Using the bicycle rear sprocket assembly according to the 37th scheme, the durability of the second sprocket wheel can be improved, simultaneously Keep the gear bands of bicycle rear sprocket assembly wider.
38th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 37th scheme The internal spline bottom diameter of second sprocket wheel is equal to or less than 33mm.
Using the bicycle rear sprocket assembly according to the 38th scheme, the durability of the second sprocket wheel can be improved, simultaneously Keep the gear bands of bicycle rear sprocket assembly wider.
39th scheme according to the present invention, according to the bicycle rear sprocket assembly of the 37th or the 38th scheme It is configured so that the internal spline bottom diameter of second sprocket wheel is equal to or more than 29mm.
Using the bicycle rear sprocket assembly according to the 39th scheme, the durability of the second sprocket wheel can be improved.
40th scheme according to the present invention, according to the bicycle rear sprocket of either a program in the first to the 39th scheme Component is configured so that at least ten inner spline gear of second sprocket wheel has the internal spline top equal to or less than 32mm Diameter.
Using the bicycle rear sprocket assembly according to the 40th scheme, which can increase flower at least one The radical length of the driving surface of key teeth.This improves the intensity of the second sprocket wheel.
41st scheme according to the present invention is configured so that institute according to the bicycle rear sprocket assembly of the 40th scheme Internal spline top diameter is stated equal to or less than 31mm.
Using the bicycle rear sprocket assembly according to the 41st scheme, which can be further increased at least The radical length of the driving surface of one inner spline gear.This improves the intensity of the second sprocket wheel.
42nd scheme according to the present invention, according to the bicycle rear sprocket assembly structure of the 40th or the 41st scheme It causes so that internal spline top diameter is equal to or more than 28mm.
Using the bicycle rear sprocket assembly according to the 42nd scheme, the necessity that can obtain sprocket wheel support ontology is strong Degree.
43rd scheme according to the present invention, according to chain after the bicycle of either a program in 1 12 scheme Wheel assembly is configured so that at least ten inner spline gear includes multiple internal spline driving surfaces, to receive to come during scrunching From the driving rotary force of the bicycle rear-hub component.The multiple internal spline driving surface include radially outermost edge, Radially inner most edge and radical length, the radical length are limited to from the radially outermost edge to the radially innermost edge Edge.The summation of the radical length of the multiple internal spline driving surface is equal to or more than 7mm.
Using the bicycle rear sprocket assembly according to the 43rd scheme, the diameter of multiple internal spline driving surfaces can be increased To length.This improves the intensity of the second sprocket wheel.
44th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 43rd scheme The summation of the radical length is equal to or more than 10mm.
Using the bicycle rear sprocket assembly according to the 44th scheme, multiple internal spline driving tables can be further increased The radical length in face.This improves the intensity of the second sprocket wheel.
45th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 43rd scheme The summation of the radical length is equal to or more than 15mm.
Using the bicycle rear sprocket assembly according to the 45th scheme, multiple internal spline driving tables can be further increased The radical length in face.This improves the intensity of the second sprocket wheel.
46th scheme according to the present invention, according to the 43rd scheme into the 45th scheme either a program from Driving rear sprocket assembly is configured so that the summation of the radical length is equal to or less than 36mm.
Using the bicycle rear sprocket assembly according to the 46th scheme, bicycle rear sprocket assembly can be further improved Productivity.
47th scheme according to the present invention, according to chain after the bicycle of either a program in 1 16 scheme Wheel assembly is configured so that at least one of described at least ten inner spline gear includes internal spline driving surface, the internal spline Driving surface, which has, is limited to the first internal spline surface angle between the internal spline driving surface and the first radial line, and described the One radial line extends to the radial direction of the internal spline driving surface most from the center of rotation axis of the bicycle rear sprocket assembly Outer edge.The range of the first internal spline surface angle is 0 degree to 6 degree.
Using the bicycle rear sprocket assembly according to the 47th scheme, the intensity of internal spline driving surface can be improved.
48th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 47th scheme In at least ten inner spline gear it is described at least one include the non-driven surface of internal spline, the non-driven surface of internal spline With the second internal spline surface angle being limited between the non-driven surface of the internal spline and the second radial line, described second is radial Line extends to the radial direction on the non-driven surface of the internal spline most from the center of rotation axis of the bicycle rear sprocket assembly Outer edge.The range of the second internal spline surface angle is 0 degree to 6 degree.
Using the bicycle rear sprocket assembly according to the 48th scheme, due to the symmetric shape of inner spline gear, so can To improve the productivity of bicycle rear sprocket assembly.
49th scheme according to the present invention, according to chain after the bicycle of either a program in 1 18 scheme Wheel assembly is configured so that at least one of described at least ten inner spline gear of second sprocket wheel relative to reference line week To symmetrical, the reference line extends to from the center of rotation axis along the radial direction about the center of rotation axis described In at least ten inner spline gears it is described at least one radially end circumferential central point.
Using the bicycle rear sprocket assembly according to the 49th scheme, due to the symmetric shape of inner spline gear, so can To improve the productivity of bicycle rear sprocket assembly.
50th scheme according to the present invention, bicycle drivetrain include bicycle rear-hub component and according to first to The bicycle rear sprocket assembly of either a program in 49 schemes.Bicycle rear-hub component includes flower drum shaft, the flower drum shaft Including having the shaft through-hole of the minimum diameter equal to or more than 13mm；Flower-drum ontology, the flower-drum ontology surround the bicycle The center of rotation axis of rear drum component is rotatably installed in the flower drum shaft；Ontology, the sprocket wheel branch are supported with sprocket wheel Support ontology is rotatably installed in the flower drum shaft around the center of rotation axis.
Using the bicycle drivetrain according to the 50th scheme, can be improved bicycle transmission tie up to it is strong around rear-wheel Degree, and the gear bands of bicycle rear sprocket assembly can be made wider.
51st scheme according to the present invention is configured so that the axis according to the bicycle drivetrain of the 50th scheme The minimum diameter of through-hole is equal to or more than 14mm.
Using the bicycle drivetrain according to the 51st scheme, it can be further improved bicycle transmission and tie up to rear-wheel week The intensity enclosed.
52nd scheme according to the present invention, is configured to according to the bicycle drivetrain of the 50th or the 51st scheme So that the minimum diameter of the shaft through-hole is equal to or less than 21mm.
Using the bicycle drivetrain according to the 52nd scheme, the design that bicycle rear-hub component can be improved is free Degree.
53rd scheme according to the present invention is configured so that described according to the bicycle rear sprocket assembly of the 6th scheme The range that at least ten first torques transmit the sum of tooth is 22 to 24.
Using the bicycle rear sprocket assembly according to the 53rd scheme, the sum of at least ten first torques transmitting tooth is mentioned The high durability of second sprocket wheel, and improve the productivity of bicycle rear sprocket assembly.
54th scheme according to the present invention is configured so that described according to the bicycle rear sprocket assembly of first scheme The range of the sum of at least ten inner spline gear of second sprocket wheel is 22 to 24.
Using the bicycle rear sprocket assembly according to the 54th scheme, the sum of at least ten first torques transmitting tooth is mentioned The high durability of second sprocket wheel, and improve the productivity of bicycle rear sprocket assembly.
55th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 33rd scheme The range of angular pitch is 13 degree to 17 degree in described first.
Using the bicycle rear sprocket assembly according to the 55th scheme, angular pitch improves the resistance to of the second sprocket wheel in first With property, and improve the productivity of bicycle rear sprocket assembly.
56th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 36th scheme The range of angular pitch is 28 degree to 32 degree in described second.
Using the bicycle rear sprocket assembly according to the 56th scheme, can easily by bicycle rear sprocket assembly with Correct circumferential position is attached to bicycle rear-hub component.
57th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 36th scheme Angular pitch is the half of angular pitch in described second in described first.
Using the bicycle rear sprocket assembly according to the 57th scheme, can easily by bicycle rear sprocket assembly with Correct circumferential position is attached to bicycle rear-hub component.
58th scheme according to the present invention, is configured so that according to the bicycle rear sprocket assembly of the 43rd scheme The range of the summation of the radical length of the multiple internal spline driving surface is 11mm to 14mm.
Using the bicycle rear sprocket assembly according to the 58th scheme, which can increase at least one The radical length of the driving surface of spline tooth.This improves second in the range of the productivity of bicycle rear sprocket assembly improves The intensity of sprocket wheel.
Detailed description of the invention
By reference to the detailed description below in conjunction with attached drawing, it can be readily available while more fully understand of the invention More complete intention and its many bonus.
Fig. 1 is the schematic diagram according to the bicycle drivetrain of one embodiment.
Fig. 2 is the exploded perspective view of the bicycle drivetrain illustrated in Fig. 1.
Fig. 3 is the sectional view along the line III-III of Fig. 2 bicycle drivetrain intercepted.
Fig. 4 is the perspective view of the bicycle rear-hub component of the bicycle drivetrain illustrated in Fig. 2, wherein having bicycle The locking component of rear sprocket assembly.
Fig. 5 is the side elevation view of the bicycle rear sprocket assembly of the bicycle drivetrain illustrated in Fig. 1.
Fig. 6 is the amplification sectional view of the bicycle drivetrain illustrated in Fig. 4.
Fig. 7 is the side elevation view of the sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Fig. 8 is the side elevation view of the sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Fig. 9 is the side elevation view of the sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Figure 10 is the side elevation view of the first sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Figure 11 is the side elevation view of the sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Figure 12 is the side elevation view of the sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Figure 13 is the side elevation view of the sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Figure 14 is the side elevation view of the sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Figure 15 is the side elevation view of the sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Figure 16 is the side elevation view of the sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Figure 17 is the side elevation view of the sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Figure 18 is the side elevation view of the sprocket wheel of the bicycle rear sprocket assembly illustrated in Fig. 5.
Figure 19 is the exploded perspective view of the bicycle rear sprocket assembly illustrated in Fig. 5.
Figure 20 is the perspective view of the sprocket wheel support ontology of the bicycle rear-hub component illustrated in Fig. 4.
Figure 21 is another perspective view of the sprocket wheel support ontology of the bicycle rear-hub component illustrated in Fig. 4.
Figure 22 is the rearview of the sprocket wheel support ontology of the bicycle rear-hub component illustrated in Fig. 4.
Figure 23 is the side elevation view of the sprocket wheel support ontology of the bicycle rear-hub component illustrated in Fig. 4.
Figure 24 is the side elevation view that ontology is supported according to the sprocket wheel of the bicycle rear-hub component of a modification.
Figure 25 is the amplification sectional view of the sprocket wheel support ontology illustrated in Figure 23.
Figure 26 is the sectional view of the sprocket wheel support ontology illustrated in Figure 23.
Figure 27 is the perspective view of the bicycle rear-hub component illustrated in Fig. 4.
Figure 28 is the side elevation view of the bicycle rear-hub component illustrated in Fig. 4.
Figure 29 is the rearview of the bicycle rear-hub component illustrated in Fig. 4.
Figure 30 is the exploded perspective of sprocket wheel the support ontology and multiple spacers of the bicycle rear-hub component illustrated in Fig. 4 Figure.
Figure 31 is the close-up sectional view of the bicycle drivetrain illustrated in Fig. 4.
Figure 32 is another side elevation view of the sprocket wheel illustrated in Fig. 8.
Figure 33 is the side elevation view of the sprocket wheel illustrated in Fig. 9.
Figure 34 is the side elevation view of the sprocket wheel illustrated in Fig. 9 according to a modification.
Figure 35 is the amplification sectional view of the sprocket wheel illustrated in Figure 29.
Figure 36 is another sectional view of the sprocket wheel illustrated in Figure 29.
Figure 37 is another sectional view of the bicycle drivetrain illustrated in Fig. 2.
Figure 38 is the exploded perspective view of the sprocket wheel illustrated in Fig. 7 and Fig. 8.
Figure 39 is another exploded perspective view of the sprocket wheel illustrated in Fig. 7 and Fig. 8.
Figure 40 is the exploded perspective view of a part of the bicycle rear-hub component illustrated in Fig. 4.
Figure 41 is the exploded perspective view of a part of the bicycle rear-hub component illustrated in Figure 40.
Figure 42 is the exploded perspective view of a part of the bicycle rear-hub component illustrated in Figure 40.
Figure 43 is the exploded perspective view of a part of the bicycle rear-hub component illustrated in Figure 40.
Figure 44 is the partial cross-sectional view of the bicycle rear-hub component illustrated in Figure 40.
Figure 45 is the sectional view along the line XLV-XLV of Figure 44 bicycle rear-hub component intercepted.
Figure 46 is the perspective view of the spacer of the bicycle rear-hub component illustrated in Figure 40.
Figure 47 is another perspective view of the spacer of the bicycle rear-hub component illustrated in Figure 40.
Figure 48 is to show the first ratchet component and sprocket wheel support ontology of the bicycle rear-hub component illustrated in Figure 40 Movement (scrunching) schematic diagram.
Figure 49 is to show the first ratchet component and sprocket wheel support ontology of the bicycle rear-hub component illustrated in Figure 40 Movement (sliding) schematic diagram.
Figure 50 is the amplification sectional view according to the sprocket wheel support ontology of a modification.
Figure 51 is the amplification sectional view according to the sprocket wheel of a modification.
Figure 52 is the side elevation view that ontology is supported according to the sprocket wheel of the bicycle rear-hub component of a modification.
Figure 53 is the amplification sectional view of the sprocket wheel support ontology illustrated in Figure 52.
Figure 54 is the exploded perspective view according to the sprocket wheel of the bicycle rear sprocket assembly of a modification.
Figure 55 is another exploded perspective view according to the sprocket wheel of the bicycle rear sprocket assembly of the modification.
Figure 56 is the side elevation view according to the sprocket wheel of the bicycle rear sprocket assembly of the modification.
Figure 57 is the side elevation view according to the sprocket wheel of the bicycle rear sprocket assembly of the modification.
Figure 58 is the side elevation view according to the sprocket wheel of the bicycle rear sprocket assembly of the modification.
Figure 59 is the side elevation view of the sprocket wheel illustrated in Figure 57.
Figure 60 is the amplification sectional view of the sprocket wheel illustrated in Figure 57.
Figure 61 is the partial side elevation view figure according to the sprocket support member of the bicycle rear sprocket assembly of the modification.
Figure 62 is the sectional view according to the bicycle drivetrain of a modification.
Specific embodiment
Embodiment is described with reference to the drawings, wherein similar appended drawing reference indicates corresponding or identical in the drawings Element.
Referring initially to Fig. 1, according to the bicycle drivetrain 10 of one embodiment including bicycle rear-hub component 12 and certainly Driving rear sprocket assembly 14.Bicycle rear-hub component 12 is fixed to cycle frame BF.Bicycle rear sprocket assembly 14 is installed On bicycle rear-hub component 12.Bicycle brake rotor 16 is mounted on bicycle rear-hub component 12.
Bicycle drivetrain 10 further includes crank assemblies 18 and bicycle chain 20.Crank assemblies 18 include crank axle 22, Right crank arm 24, left crank arm 26 and preceding sprocket wheel 27.Right crank arm 24 and left crank arm 26 are fixed to crank axle 22.Preceding sprocket wheel 27 Fixed at least one of crank axle 22 and right crank arm 24.Bicycle chain 20 and preceding sprocket wheel 27 and bicycle rear sprocket group Part 14 engages, and pedalling force is transmitted to bicycle rear sprocket assembly 14 from preceding sprocket wheel 27.In the illustrated embodiment, crank assemblies 18 include the preceding sprocket wheel 27 as single sprocket wheel.However, crank assemblies 18 may include multiple preceding sprocket wheels.Bicycle rear sprocket group Part 14 is rear sprocket assembly.However, the structure of bicycle rear sprocket assembly 14 can be applied to preceding sprocket wheel.
In this application, following direction term "front", "rear", " forward ", " backward ", "left", "right", " transverse direction ", " to On " with " downward " and any other similar direction term refer to based on the saddle (not shown) for being sitting in bicycle towards hand Those of user (for example, cyclist) determination (not shown) direction.Therefore, these are for describing bicycle drivetrain 10, the term of bicycle rear-hub component 12 or bicycle rear sprocket assembly 14 should be relative on a horizontal surface uprightly to ride Line position set it is using, equipped with bicycle drivetrain 10, bicycle rear-hub component 12 or bicycle rear sprocket assembly 14 from Driving is to explain.
As shown in Fig. 2, bicycle rear-hub component 12 and bicycle rear sprocket assembly 14 have center of rotation axis A1.From Driving rear sprocket assembly 14 surrounds center of rotation axis A1 relative to cycle frame BF (Fig. 1) by bicycle rear-hub component 12 It is pivotably supported.Bicycle rear sprocket assembly 14 is configured to engage with bicycle chain 20, to scrunch period in bicycle Transmitting driving rotary force F1 between chain 20 and bicycle rear sprocket assembly 14.During scrunching, bicycle rear sprocket assembly 14 It is rotated on driving direction of rotation D11 around center of rotation axis A1.Drive direction of rotation D11 along bicycle rear-hub component 12 or The circumferential direction D1 of bicycle rear sprocket assembly 14 is limited.Opposite direction of rotation D12 is the side opposite with driving direction of rotation D11 To and along circumferential direction D1 limit.
As shown in Fig. 2, bicycle rear-hub component 12 includes that sprocket wheel supports ontology 28.Bicycle rear sprocket assembly 14 constructs Ontology 28 is supported at the sprocket wheel of installation to bicycle rear-hub component 12.Bicycle rear sprocket assembly 14 is mounted on sprocket wheel support originally On body 28, to support transmitting driving rotary force F1 between ontology 28 and bicycle rear sprocket assembly 14 in sprocket wheel.Flower after bicycle Drum component 12 includes flower drum shaft 30.Sprocket wheel support ontology 28 is rotatably installed in flower drum shaft 30 around center of rotation axis A1 On.Bicycle rear sprocket assembly 14 further includes locking component 32.Locking component 32 be fixed to sprocket wheel support ontology 28, with relative to Sprocket wheel support ontology 28 keeps bicycle rear sprocket assembly 14 on the axial direction D2 about center of rotation axis A1.
As shown in figure 3, bicycle rear-hub component 12 is fixed to cycle frame BF by wheel securing structure WS.Flower-drum Axis 30 includes shaft through-hole 30A.The fixed link WS1 of wheel securing structure WS extends through the shaft through-hole 30A of flower drum shaft 30.Flower drum shaft 30 include first axle end 30B and the second shaft end portion 30C.Flower drum shaft 30 is between first axle end 30B and the second shaft end portion 30C Extend along center of rotation axis A1.The first recess portion of the first vehicle frame BF1 of cycle frame BF is arranged in first axle end 30B In BF11.Second shaft end portion 30C is arranged in the second recess portion BF21 of the second vehicle frame BF2 of cycle frame BF.Flower drum shaft 30 It is maintained between the first vehicle frame BF1 and the second vehicle frame BF2 by wheel securing structure WS.Wheel securing structure WS includes bicycle Known structure in field.Therefore, for simplicity, will not be described in detail here.
In this embodiment, shaft through-hole 30A has the minimum diameter BD1 equal to or more than 13mm.The minimum of shaft through-hole 30A Internal diameter BD1 is preferably equal to or greater than 14mm.The minimum diameter BD1 of shaft through-hole 30A is preferably equal to or less than 21mm.In the reality It applies in example, the minimum diameter BD1 of shaft through-hole 30A is 15mm.However, minimum diameter BD1 is not limited to the embodiment and above range.
Flower drum shaft 30 has the maximum outside diameter BD2 equal to or more than 17mm.The maximum outside diameter BD2 of flower drum shaft 30 is preferably etc. In or greater than 20mm.The maximum outside diameter BD2 of flower drum shaft 30 is preferably equal to or less than 23mm.In this embodiment, flower drum shaft 30 Maximum outside diameter BD2 be 21mm.However, the maximum outside diameter BD2 of flower drum shaft 30 is not limited to the embodiment and above range.Flower drum shaft 30 have the minimum outer diameter BD3 equal to or more than 15mm.Minimum outer diameter BD3 is preferably equal to or greater than 17mm.Minimum outer diameter BD3 Preferably equal to or less than 19mm.In this embodiment, the minimum outer diameter BD3 of flower drum shaft 30 is 17.6mm.However, minimum outer diameter BD3 is not limited to the embodiment and above range.
Flower drum shaft 30 includes central siphon 30X, first shaft portion 30Y and the second shaft portion 30Z.Central siphon 30X have tubular form and Extend along center of rotation axis A1.First shaft portion 30Y is fixed to the first end of central siphon 30X.The second shaft portion 30Z is fixed to central siphon The second end of 30X.At least one of first shaft portion 30Y and the second shaft portion 30Z can be wholely set with central siphon 30X.
As shown in Figure 3 and Figure 4, bicycle rear-hub component 12 further includes brake rotors support ontology 34.Brake rotors branch Support ontology 34 is rotatably installed in flower drum shaft 30 around center of rotation axis A1.Brake rotors support ontology 34 is connected to certainly Service brake rotor 16 (Fig. 1) will brake rotary force from bicycle brake rotor 16 and be transmitted to brake rotors support ontology 34.
As shown in figure 4, bicycle rear-hub component 12 includes flower-drum ontology 36.Flower-drum ontology 36 surrounds bicycle rear-hub The center of rotation axis A1 of component 12 is rotatably installed in flower drum shaft 30.In this embodiment, sprocket wheel support ontology 28 is The component isolated with flower-drum ontology 36.Brake rotors support ontology 34 and flower-drum ontology 36 are integrally provided as single-piece entirety structure Part.However, sprocket wheel support ontology 28 can be integrally provided with flower-drum ontology 36.Brake rotors support ontology 34 can be and flower The isolated component of drum ontology 36.For example, flower-drum ontology 36 is by including that the metal material of aluminium is made.
As shown in figure 5, bicycle rear sprocket assembly 14 includes multiple bicycle chainwheels.Multiple bicycle chainwheels include first Sprocket wheel and the second sprocket wheel.In this embodiment, multiple bicycle chainwheels include the multiple first sprocket wheel SP1 for being set as the first sprocket wheel And SP2.Multiple bicycle chainwheels further include multiple second the sprocket wheel SP3 and SP4 for being set as the second sprocket wheel.Multiple bicycle chainwheels Including adding sprocket wheel.In this embodiment, multiple bicycle chainwheels include multiple additional sprocket wheel SP5 to SP12.However, the first chain The sum of wheel is not limited to the embodiment.The sum of second sprocket wheel is not limited to the embodiment.The sum of additional sprocket wheel is not limited to the reality Apply example.In addition, although the first sprocket wheel SP1 is the sprocket wheel separated with the first sprocket wheel SP2, the first sprocket wheel in this embodiment SP1 and SP2 can be integrally-formed as single one-piece integral member.In a similar way, although the second sprocket wheel in this embodiment SP3 is the sprocket wheel separated with the second sprocket wheel SP4, but the second sprocket wheel SP3 and SP4 can be integrally-formed as single-piece entirety structure Part.
For example, the sum of multiple bicycle chainwheels is equal to or more than 10.The sum of multiple bicycle chainwheels can be equal to or Greater than 11.The sum of multiple bicycle chainwheels can be equal to or more than 12.In this embodiment, the sum of multiple bicycle chainwheels It is 12.However, the sum of multiple bicycle chainwheels is not limited to the embodiment.For example, the sum of multiple bicycle chainwheels can be 13,14 or can be equal to or more than 15.
In this embodiment, the first sprocket wheel SP1 is the minimum sprocket wheel in bicycle rear sprocket assembly 14.Additional sprocket wheel SP12 It is the maximum sprocket wheel in bicycle rear sprocket assembly 14.First sprocket wheel SP2 corresponds to the top grade in bicycle rear sprocket assembly 14 Position.Additional sprocket wheel SP12 corresponds to the low-grade location in bicycle rear sprocket assembly 14.
As shown in figure 5, the first sprocket wheel SP1 has pitch diameter PCD1.First sprocket wheel SP2 has pitch diameter PCD2.The Two sprocket wheel SP3 have pitch diameter PCD3.Second sprocket wheel SP4 has pitch diameter PCD4.Additional sprocket wheel SP5 has pitch diameter PCD5.Additional sprocket wheel SP6 has pitch diameter PCD6.Additional sprocket wheel SP7 has pitch diameter PCD7.Additional sprocket wheel SP8 has Pitch diameter PCD8.Additional sprocket wheel SP9 has pitch diameter PCD9.Additional sprocket wheel SP10 has pitch diameter PCD10.Additional chain Taking turns SP11 has pitch diameter PCD11.Additional sprocket wheel SP12 has pitch diameter PCD12.
There is first sprocket wheel SP1 pitch circle PC1, pitch circle PC1 to have pitch diameter PCD1.First sprocket wheel SP2 has pitch circle PC2, pitch circle PC2 have pitch diameter PCD2.There is second sprocket wheel SP3 pitch circle PC3, pitch circle PC3 to have pitch diameter PCD3.The There is two sprocket wheel SP4 pitch circle PC4, pitch circle PC4 to have pitch diameter PCD4.Additional sprocket wheel SP5 has pitch circle PC5, pitch circle PC5 tool There is pitch diameter PCD5.There is additional sprocket wheel SP6 pitch circle PC6, pitch circle PC6 to have pitch diameter PCD6.Additional sprocket wheel SP7 has Pitch circle PC7, pitch circle PC7 have pitch diameter PCD7.There is additional sprocket wheel SP8 pitch circle PC8, pitch circle PC8 to have pitch diameter PCD8.There is additional sprocket wheel SP9 pitch circle PC9, pitch circle PC9 to have pitch diameter PCD9.Additional sprocket wheel SP10 has pitch circle PC10, Pitch circle PC10 has pitch diameter PCD10.There is additional sprocket wheel SP11 pitch circle PC11, pitch circle PC11 to have pitch diameter PCD11. There is additional sprocket wheel SP12 pitch circle PC12, pitch circle PC12 to have pitch diameter PCD12.
The pitch circle PC1 of first sprocket wheel SP1 by the bicycle chain 20 (Fig. 2) engaged with the first sprocket wheel SP1 pin center Axis limits.Pitch circle PC2 to PC12 is limited similar to pitch circle PC1.Therefore, for simplicity, not will be described in detail here.
In this embodiment, pitch diameter PCD1 is less than pitch diameter PCD2.Pitch diameter PCD2 is less than pitch diameter PCD3.Pitch diameter PCD3 is less than pitch diameter PCD4.Pitch diameter PCD4 is less than pitch diameter PCD5.Pitch diameter PCD5 is small In pitch diameter PCD6.Pitch diameter PCD6 is less than pitch diameter PCD7.Pitch diameter PCD7 is less than pitch diameter PCD8.Pitch circle Diameter PCD8 is less than pitch diameter PCD9.Pitch diameter PCD9 is less than pitch diameter PCD10.Pitch diameter PCD10 is less than pitch circle Diameter PCD11.Pitch diameter PCD11 is less than pitch diameter PCD12.
Pitch diameter PCD1 is the minimum pitch diameter in bicycle rear sprocket assembly 14.Pitch diameter PCD12 is voluntarily Maximum pitch diameter in vehicle rear sprocket assembly 14.First sprocket wheel SP1 corresponds to the high tap position of bicycle rear sprocket assembly 14.It is attached Sprocket wheel SP12 is added to correspond to the low-grade location in bicycle rear sprocket assembly 14.However, after the first sprocket wheel SP1 can correspond to bicycle Another gear in chain wheel assembly 14.Additional sprocket wheel SP12 can correspond to another gear in bicycle rear sprocket assembly 14.
As shown in fig. 6, the first sprocket wheel SP2 is in the axial direction side of the center of rotation axis A1 about bicycle rear sprocket assembly 14 It is adjacent with the first sprocket wheel SP1 on D2, and there is no other sprocket wheel between the first sprocket wheel SP1 and the first sprocket wheel SP2.Second chain It is adjacent with the first sprocket wheel SP2 on the axial direction D2 about the center of rotation axis A1 of bicycle rear sprocket assembly 14 to take turns SP3, And there is no other sprocket wheel between the first sprocket wheel SP2 and the second sprocket wheel SP3.Second sprocket wheel SP4 is about bicycle rear sprocket It is adjacent with the second sprocket wheel SP3 on the axial direction D2 of the center of rotation axis A1 of component 14, and in the second sprocket wheel SP3 and the second chain There is no other sprocket wheel between wheel SP4.First sprocket wheel SP1 and SP2, the second sprocket wheel SP3, the second sprocket wheel SP4 and additional sprocket wheel SP5 to SP12 is arranged on D2 in the axial direction with this sequence.
As shown in fig. 7, the first sprocket wheel SP1 includes sprocket body SP1A and multiple sprocket SP1B.Multiple sprocket SP1B Center of rotation axis A1 accessary sprocket wheel ontology SP1A relative to bicycle rear sprocket assembly 14 extends radially outwardly.First sprocket wheel Total number of teeth (sum of at least one sprocket SP1B) of SP1 is equal to or less than 10.In this embodiment, the first sprocket wheel SP1 The sum of at least one sprocket SP1B is 10.However, the sum of multiple sprocket SP1B of the first sprocket wheel SP1 is not limited to the reality Apply example and above range.
As shown in figure 8, the first sprocket wheel SP2 includes sprocket body SP2A and multiple sprocket SP2B.Multiple sprocket SP2B Center of rotation axis A1 accessary sprocket wheel ontology SP2A relative to bicycle rear sprocket assembly 14 extends radially outwardly.In the embodiment In, the sum of at least one sprocket SP2B is 12.However, the sum of multiple sprocket SP2B of the first sprocket wheel SP2 is not limited to The embodiment.
First sprocket wheel SP2 includes that at least one first gear shift promotes region SP2F1, to promote bicycle chain 20 from first Sprocket wheel SP2 is shifted to the first gear-change operation of the first sprocket wheel SP1.First sprocket wheel SP2 includes that at least one second gear shift promotes area Domain SP2F2, to promote bicycle chain 20 to be shifted to from the first sprocket wheel SP1 the second gear-change operation of the first sprocket wheel SP2.In the reality It applies in example, the first sprocket wheel SP2 includes that multiple first gear shift promote region SP2F1, to promote the first gear-change operation.First sprocket wheel SP2 includes that second gear shift promotes region SP2F2, to promote the second gear-change operation.However, the first gear shift promotes region The sum of SP2F1 is not limited to the embodiment.Second gear shift promotes the sum of region SP2F2 to be not limited to the embodiment.It uses herein Term " gear shift promotion region " to be intended to design another at promoting bicycle chain to take turns to from a chain in this region The region of the gear-change operation of a axially adjacent sprocket wheel.
In this embodiment, the first sprocket wheel SP2 includes that multiple first gear shift promote recess S P2R1, to promote the first gear shift Operation.First sprocket wheel SP2 includes that multiple second gear shift promote recess S P2R2, to promote the second gear-change operation.First gear shift promotes Recess S P2R1 setting promotes in the SP2F1 of region in the first gear shift.However, it may include substitution that the first gear shift, which promotes region SP2F1, First gear shift promotes recess S P2R1 or another structure other than the first gear shift promotes recess S P2R1.Second gear shift promotes area Domain SP2F2 may include substituting the second gear shift to promote recess S P2R2 or another other than the second gear shift promotes recess S P2R2 Structure.
As shown in figure 9, the second sprocket wheel SP3 includes sprocket body SP3A and multiple sprocket SP3B.Multiple sprocket SP3B Center of rotation axis A1 accessary sprocket wheel ontology SP3A relative to bicycle rear sprocket assembly 14 extends radially outwardly.In the embodiment In, the sum of at least one sprocket SP3B is 14.However, the sum of multiple sprocket SP3B of the second sprocket wheel SP3 is not limited to The embodiment.
Second sprocket wheel SP3 includes that at least one first gear shift promotes region SP3F1, to promote bicycle chain 20 from second Sprocket wheel SP3 is shifted to the first gear-change operation of the first sprocket wheel SP2 (Fig. 6).Second sprocket wheel SP3 includes that at least one second gear shift promotees Recessed region SP3F2 is grasped with the second gear shift for promoting bicycle chain 20 to be shifted to the second sprocket wheel SP3 from the first sprocket wheel SP2 (Fig. 6) Make.In this embodiment, the second sprocket wheel SP3 includes that multiple first gear shift promote region SP3F1, to promote the first gear-change operation. Second sprocket wheel SP3 includes that second gear shift promotes region SP3F2, to promote the second gear-change operation.However, the first gear shift promotes The sum of region SP3F1 is not limited to the embodiment.Second gear shift promotes the sum of region SP3F2 to be not limited to the embodiment.
In this embodiment, the second sprocket wheel SP3 includes that multiple first gear shift promote recess S P3R1, to promote the first gear shift Operation.Second sprocket wheel SP3 includes that multiple second gear shift promote recess S P3R2, to promote the second gear-change operation.First gear shift promotes Recess S P3R1 setting promotes in the SP3F1 of region in the first gear shift.However, it may include substitution that the first gear shift, which promotes region SP3F1, First gear shift promotes recess S P3R1 or another structure other than the first gear shift promotes recess S P3R1.Second gear shift promotes area Domain SP3F2 may include substituting the second gear shift to promote recess S P3R2 or another other than the second gear shift promotes recess S P3R2 Structure.
As shown in Figure 10, the second sprocket wheel SP4 includes sprocket body SP4A and multiple sprocket SP4B.Multiple sprocket SP4B Center of rotation axis A1 accessary sprocket wheel ontology SP4A relative to bicycle rear sprocket assembly 14 extends radially outwardly.In the embodiment In, the sum of at least one sprocket SP4B is 16.However, the sum of multiple sprocket SP4B of the second sprocket wheel SP4 is not limited to The embodiment.
Second sprocket wheel SP4 includes that at least one first gear shift promotes region SP4F1, to promote bicycle chain 20 from second Sprocket wheel SP4 is shifted to the first gear-change operation of the second sprocket wheel SP3.Second sprocket wheel SP4 includes that at least one second gear shift promotes area Domain SP4F2, to promote bicycle chain 20 to be shifted to from the second sprocket wheel SP3 the second gear-change operation of the second sprocket wheel SP4.In the reality It applies in example, the second sprocket wheel SP4 includes that multiple first gear shift promote region SP4F1, to promote the first gear-change operation.Second sprocket wheel SP4 includes that second gear shift promotes region SP4F2, to promote the second gear-change operation.However, the first gear shift promotes region The sum of SP4F1 is not limited to the embodiment.Second gear shift promotes the sum of region SP4F2 to be not limited to the embodiment.
In this embodiment, the second sprocket wheel SP4 includes that multiple first gear shift promote recess S P4R1, to promote the first gear shift Operation.Second sprocket wheel SP4 includes that multiple second gear shift promote recess S P4R2, to promote the second gear-change operation.First gear shift promotes Recess S P4R1 setting promotes in the SP4F1 of region in the first gear shift.However, it may include substitution that the first gear shift, which promotes region SP4F1, First gear shift promotes recess S P4R1 or another structure other than the first gear shift promotes recess S P4R1.Second gear shift promotes area Domain SP4F2 may include substituting the second gear shift to promote recess S P4R2 or another other than the second gear shift promotes recess S P4R2 Structure.
As shown in figure 11, adding sprocket wheel SP5 includes sprocket body SP5A and multiple sprocket SP5B.Multiple sprocket SP5B Center of rotation axis A1 accessary sprocket wheel ontology SP5A relative to bicycle rear sprocket assembly 14 extends radially outwardly.In the embodiment In, the sum of at least one sprocket SP5B is 18.However, the sum of multiple sprocket SP5B of additional sprocket wheel SP5 is not limited to The embodiment.
Additional sprocket wheel SP5 includes that at least one first gear shift promotes region SP5F1, to promote bicycle chain 20 from additional Sprocket wheel SP5 is shifted to the first gear-change operation of adjacent relatively minor sprocket SP4.Additional sprocket wheel SP5 includes at least one second gear shift Promote region SP5F2, is changed with promoting bicycle chain 20 to be shifted to the second of additional sprocket wheel SP5 from adjacent relatively minor sprocket SP4 Shelves operation.Axial direction D2 of the adjacent relatively minor sprocket SP4 in the center of rotation axis A1 about bicycle rear sprocket assembly 14 It is upper adjacent with additional sprocket wheel SP5, and there is no other sprocket wheel between additional sprocket wheel SP5 and adjacent relatively minor sprocket SP4.At this In embodiment, additional sprocket wheel SP5 includes that multiple first gear shift promote region SP5F1, to promote the first gear-change operation.Additional sprocket wheel SP5 includes that multiple second gear shift promote region SP5F2, to promote the second gear-change operation.However, the first gear shift promotes region The sum of SP5F1 is not limited to the embodiment.Second gear shift promotes the sum of region SP5F2 to be not limited to the embodiment.
In this embodiment, adding sprocket wheel SP5 includes that multiple first gear shift promote recess S P5R1, to promote the first gear shift Operation.Additional sprocket wheel SP5 includes that multiple second gear shift promote recess S P5R2, to promote the second gear-change operation.First gear shift promotes Recess S P5R1 setting promotes in the SP5F1 of region in the first gear shift.Second gear shift promotes recess S P5R2 setting to promote in the second gear shift In recessed region SP5F2.However, it may include that the first gear shift of substitution promotes recess S P5R1 or removes that the first gear shift, which promotes region SP5F1, First gear shift promotes another structure except recess S P5R1.It may include that substitution second is changed that second gear shift, which promotes region SP5F2, Shelves promote recess S P5R2 or another structure other than the second gear shift promotes recess S P5R2.
As shown in figure 12, adding sprocket wheel SP6 includes sprocket body SP6A and multiple sprocket SP6B.Multiple sprocket SP6B Center of rotation axis A1 accessary sprocket wheel ontology SP6A relative to bicycle rear sprocket assembly 14 extends radially outwardly.In the embodiment In, the sum of at least one sprocket SP6B is 21.However, the sum of multiple sprocket SP6B of additional sprocket wheel SP6 is not limited to The embodiment.
Additional sprocket wheel SP6 includes that at least one first gear shift promotes region SP6F1, to promote bicycle chain 20 from additional Sprocket wheel SP6 is shifted to the first gear-change operation of adjacent relatively minor sprocket SP5.Additional sprocket wheel SP6 includes at least one second gear shift Promote region SP6F2, is changed with promoting bicycle chain 20 to be shifted to the second of additional sprocket wheel SP6 from adjacent relatively minor sprocket SP5 Shelves operation.Axial direction D2 of the adjacent relatively minor sprocket SP5 in the center of rotation axis A1 about bicycle rear sprocket assembly 14 It is upper adjacent with additional sprocket wheel SP6, and there is no other sprocket wheel between additional sprocket wheel SP6 and adjacent relatively minor sprocket SP5.At this In embodiment, additional sprocket wheel SP6 includes that multiple first gear shift promote region SP6F1, to promote the first gear-change operation.Additional sprocket wheel SP6 includes that multiple second gear shift promote region SP6F2, to promote the second gear-change operation.However, the first gear shift promotes region The sum of SP6F1 is not limited to the embodiment.Second gear shift promotes the sum of region SP6F2 to be not limited to the embodiment.
In this embodiment, adding sprocket wheel SP6 includes that multiple first gear shift promote recess S P6R1, to promote the first gear shift Operation.Additional sprocket wheel SP6 includes that multiple second gear shift promote recess S P6R2, to promote the second gear-change operation.First gear shift promotes Recess S P6R1 setting promotes in the SP6F1 of region in the first gear shift.Second gear shift promotes recess S P6R2 setting to promote in the second gear shift In recessed region SP6F2.However, it may include that the first gear shift of substitution promotes recess S P6R1 or removes that the first gear shift, which promotes region SP6F1, First gear shift promotes another structure except recess S P6R1.It may include that substitution second is changed that second gear shift, which promotes region SP6F2, Shelves promote recess S P6R2 or another structure other than the second gear shift promotes recess S P6R2.
As shown in figure 13, adding sprocket wheel SP7 includes sprocket body SP7A and multiple sprocket SP7B.Multiple sprocket SP7B Center of rotation axis A1 accessary sprocket wheel ontology SP7A relative to bicycle rear sprocket assembly 14 extends radially outwardly.In the embodiment In, the sum of at least one sprocket SP7B is 24.However, the sum of multiple sprocket SP7B of additional sprocket wheel SP7 is not limited to The embodiment.
Additional sprocket wheel SP7 includes that at least one first gear shift promotes region SP7F1, to promote bicycle chain 20 from additional Sprocket wheel SP7 is shifted to the first gear-change operation of adjacent relatively minor sprocket SP6.Additional sprocket wheel SP7 includes at least one second gear shift Promote region SP7F2, is changed with promoting bicycle chain 20 to be shifted to the second of additional sprocket wheel SP7 from adjacent relatively minor sprocket SP6 Shelves operation.Axial direction D2 of the adjacent relatively minor sprocket SP6 in the center of rotation axis A1 about bicycle rear sprocket assembly 14 It is upper adjacent with additional sprocket wheel SP7, and there is no other sprocket wheel between additional sprocket wheel SP7 and adjacent relatively minor sprocket SP6.At this In embodiment, additional sprocket wheel SP7 includes that multiple first gear shift promote region SP7F1, to promote the first gear-change operation.Additional sprocket wheel SP7 includes that multiple second gear shift promote region SP7F2, to promote the second gear-change operation.However, the first gear shift promotes region The sum of SP7F1 is not limited to the embodiment.Second gear shift promotes the sum of region SP7F2 to be not limited to the embodiment.
In this embodiment, adding sprocket wheel SP7 includes that multiple first gear shift promote recess S P7R1, to promote the first gear shift Operation.Additional sprocket wheel SP7 includes that multiple second gear shift promote recess S P7R2, to promote the second gear-change operation.First gear shift promotes Recess S P7R1 setting promotes in the SP7F1 of region in the first gear shift.Second gear shift promotes recess S P7R2 setting to promote in the second gear shift In recessed region SP7F2.However, it may include that the first gear shift of substitution promotes recess S P7R1 or removes that the first gear shift, which promotes region SP7F1, First gear shift promotes another structure except recess S P7R1.It may include that substitution second is changed that second gear shift, which promotes region SP7F2, Shelves promote recess S P7R2 or another structure other than the second gear shift promotes recess S P7R2.
As shown in figure 14, adding sprocket wheel SP8 includes sprocket body SP8A and multiple sprocket SP8B.Multiple sprocket SP8B Center of rotation axis A1 accessary sprocket wheel ontology SP8A relative to bicycle rear sprocket assembly 14 extends radially outwardly.In the embodiment In, the sum of at least one sprocket SP8B is 28.However, the sum of multiple sprocket SP8B of additional sprocket wheel SP8 is not limited to The embodiment.
Additional sprocket wheel SP8 includes that at least one first gear shift promotes region SP8F1, to promote bicycle chain 20 from additional Sprocket wheel SP8 is shifted to the first gear-change operation of adjacent relatively minor sprocket SP7.Additional sprocket wheel SP8 includes at least one second gear shift Promote region SP8F2, is changed with promoting bicycle chain 20 to be shifted to the second of additional sprocket wheel SP8 from adjacent relatively minor sprocket SP7 Shelves operation.Axial direction D2 of the adjacent relatively minor sprocket SP7 in the center of rotation axis A1 about bicycle rear sprocket assembly 14 It is upper adjacent with additional sprocket wheel SP8, and there is no other sprocket wheel between additional sprocket wheel SP8 and adjacent relatively minor sprocket SP7.At this In embodiment, additional sprocket wheel SP8 includes that multiple first gear shift promote region SP8F1, to promote the first gear-change operation.Additional sprocket wheel SP8 includes that multiple second gear shift promote region SP8F2, to promote the second gear-change operation.However, the first gear shift promotes region The sum of SP8F1 is not limited to the embodiment.Second gear shift promotes the sum of region SP8F2 to be not limited to the embodiment.
In this embodiment, adding sprocket wheel SP8 includes that multiple first gear shift promote recess S P8R1, to promote the first gear shift Operation.Additional sprocket wheel SP8 includes that multiple second gear shift promote recess S P8R2, to promote the second gear-change operation.First gear shift promotes Recess S P8R1 setting promotes in the SP8F1 of region in the first gear shift.Second gear shift promotes recess S P8R2 setting to promote in the second gear shift In recessed region SP8F2.However, it may include that the first gear shift of substitution promotes recess S P8R1 or removes that the first gear shift, which promotes region SP8F1, First gear shift promotes another structure except recess S P8R1.It may include that substitution second is changed that second gear shift, which promotes region SP8F2, Shelves promote recess S P8R2 or another structure other than the second gear shift promotes recess S P8R2.
As shown in figure 15, adding sprocket wheel SP9 includes sprocket body SP9A and multiple sprocket SP9B.Multiple sprocket SP9B Center of rotation axis A1 accessary sprocket wheel ontology SP9A relative to bicycle rear sprocket assembly 14 extends radially outwardly.In the embodiment In, the sum of at least one sprocket SP9B is 33.However, the sum of multiple sprocket SP9B of additional sprocket wheel SP9 is not limited to The embodiment.
Additional sprocket wheel SP9 includes that at least one first gear shift promotes region SP9F1, to promote bicycle chain 20 from additional Sprocket wheel SP9 is shifted to the first gear-change operation of adjacent relatively minor sprocket SP8.Additional sprocket wheel SP9 includes at least one second gear shift Promote region SP9F2, is changed with promoting bicycle chain 20 to be shifted to the second of additional sprocket wheel SP9 from adjacent relatively minor sprocket SP8 Shelves operation.Axial direction D2 of the adjacent relatively minor sprocket SP8 in the center of rotation axis A1 about bicycle rear sprocket assembly 14 It is upper adjacent with additional sprocket wheel SP9, and there is no other sprocket wheel between additional sprocket wheel SP9 and adjacent relatively minor sprocket SP8.At this In embodiment, additional sprocket wheel SP9 includes that multiple first gear shift promote region SP9F1, to promote the first gear-change operation.Additional sprocket wheel SP9 includes that multiple second gear shift promote region SP9F2, to promote the second gear-change operation.However, the first gear shift promotes region The sum of SP9F1 is not limited to the embodiment.Second gear shift promotes the sum of region SP9F2 to be not limited to the embodiment.
In this embodiment, adding sprocket wheel SP9 includes that multiple first gear shift promote recess S P9R1, to promote the first gear shift Operation.Additional sprocket wheel SP9 includes that multiple second gear shift promote recess S P9R2, to promote the second gear-change operation.First gear shift promotes Recess S P9R1 setting promotes in the SP9F1 of region in the first gear shift.Second gear shift promotes recess S P9R2 setting to promote in the second gear shift In recessed region SP9F2.However, it may include that the first gear shift of substitution promotes recess S P9R1 or removes that the first gear shift, which promotes region SP9F1, First gear shift promotes another structure except recess S P9R1.It may include that substitution second is changed that second gear shift, which promotes region SP9F2, Shelves promote recess S P9R2 or another structure other than the second gear shift promotes recess S P9R2.
As shown in figure 16, adding sprocket wheel SP10 includes sprocket body SP10A and multiple sprocket SP10B.Multiple sprockets SP10B extends radially outwardly relative to the center of rotation axis A1 accessary sprocket wheel ontology SP10A of bicycle rear sprocket assembly 14.At this In embodiment, the sum of at least one sprocket SP10B is 39.However, multiple sprocket SP10B's of additional sprocket wheel SP10 is total Number is not limited to the embodiment.
Additional sprocket wheel SP10 includes that at least one first gear shift promotes region SP10F1, to promote bicycle chain 20 from attached Sprocket wheel SP10 is added to be shifted to the first gear-change operation of adjacent relatively minor sprocket SP9.Additional sprocket wheel SP10 include at least one second Gear shift promotes region SP10F2, to promote bicycle chain 20 to be shifted to additional sprocket wheel SP10's from adjacent relatively minor sprocket SP9 Second gear-change operation.Axial direction of the adjacent relatively minor sprocket SP9 in the center of rotation axis A1 about bicycle rear sprocket assembly 14 It is adjacent with additional sprocket wheel SP10 on the D2 of direction, and do not have between additional sprocket wheel SP10 and adjacent relatively minor sprocket SP9 other Sprocket wheel.In this embodiment, adding sprocket wheel SP10 includes that multiple first gear shift promote region SP10F1, to promote the first gear shift behaviour Make.Additional sprocket wheel SP10 includes that multiple second gear shift promote region SP10F2, to promote the second gear-change operation.However, first changes Shelves promote the sum of region SP10F1 to be not limited to the embodiment.Second gear shift promotes the sum of region SP10F2 to be not limited to the implementation Example.
In this embodiment, adding sprocket wheel SP10 includes that multiple first gear shift promote recess S P10R1, to promote first to change Shelves operation.Additional sprocket wheel SP10 includes that multiple second gear shift promote recess S P10R2, to promote the second gear-change operation.First gear shift Recess S P10R1 setting is promoted to promote in the SP10F1 of region in the first gear shift.Second gear shift promotes recess S P10R2 to be arranged second Gear shift promotes in the SP10F2 of region.However, it may include that the first gear shift of substitution promotes recess portion that the first gear shift, which promotes region SP10F1, SP10R1 or another structure other than the first gear shift promotes recess S P10R1.Second gear shift promotes region SP10F2 can wrap It includes the second gear shift of substitution and promotes recess S P10R2 or another structure other than the second gear shift promotes recess S P10R2.
As shown in figure 17, adding sprocket wheel SP11 includes sprocket body SP11A and multiple sprocket SP11B.Multiple sprockets SP11B extends radially outwardly relative to the center of rotation axis A1 accessary sprocket wheel ontology SP11A of bicycle rear sprocket assembly 14.At this In embodiment, the sum of at least one sprocket SP11B is 45.However, multiple sprocket SP11B's of additional sprocket wheel SP11 is total Number is not limited to the embodiment.
Additional sprocket wheel SP11 includes that at least one first gear shift promotes region SP11F1, to promote bicycle chain 20 from attached Sprocket wheel SP11 is added to be shifted to the first gear-change operation of adjacent relatively minor sprocket SP10.Additional sprocket wheel SP11 include at least one second Gear shift promotes region SP11F2, to promote bicycle chain 20 to be shifted to additional sprocket wheel SP11's from adjacent relatively minor sprocket SP10 Second gear-change operation.Axial direction of the adjacent relatively minor sprocket SP10 in the center of rotation axis A1 about bicycle rear sprocket assembly 14 It is adjacent with additional sprocket wheel SP11 on the D2 of direction, and do not have between additional sprocket wheel SP11 and adjacent relatively minor sprocket SP10 other Sprocket wheel.In this embodiment, adding sprocket wheel SP11 includes that multiple first gear shift promote region SP11F1, to promote the first gear shift behaviour Make.Additional sprocket wheel SP11 includes that multiple second gear shift promote region SP11F2, to promote the second gear-change operation.However, first changes Shelves promote the sum of region SP11F1 to be not limited to the embodiment.Second gear shift promotes the sum of region SP11F2 to be not limited to the implementation Example.
In this embodiment, adding sprocket wheel SP11 includes that multiple first gear shift promote recess S P11R1, to promote first to change Shelves operation.Additional sprocket wheel SP11 includes that multiple second gear shift promote recess S P11R2, to promote the second gear-change operation.First gear shift Recess S P11R1 setting is promoted to promote in the SP11F1 of region in the first gear shift.Second gear shift promotes recess S P11R2 to be arranged second Gear shift promotes in the SP11F2 of region.However, it may include that the first gear shift of substitution promotes recess portion that the first gear shift, which promotes region SP11F1, SP11R1 or another structure in addition to the first gear shift promotes recess S P11R1.Second gear shift promote region SP11F2 may include It substitutes the second gear shift and promotes recess S P11R2 or another structure other than the second gear shift promotes recess S P11R2.
As shown in figure 18, adding sprocket wheel SP12 includes sprocket body SP12A and multiple sprocket SP12B.Multiple sprockets SP12B extends radially outwardly relative to the center of rotation axis A1 accessary sprocket wheel ontology SP12A of bicycle rear sprocket assembly 14.It is additional Total number of teeth of sprocket wheel SP12 is equal to or more than 46.Total number of teeth of additional sprocket wheel SP12 can also be equal to or more than 50.In the implementation In example, the total number of teeth for adding sprocket wheel SP12 is 51.However, the sum of at least one sprocket SP12B of additional sprocket wheel SP12 is not It is limited to the embodiment and above range.
Additional sprocket wheel SP12 includes that at least one first gear shift promotes region SP12F1, to promote bicycle chain 20 from attached Sprocket wheel SP12 is added to be shifted to the first gear-change operation of adjacent relatively minor sprocket SP11.Additional sprocket wheel SP12 include at least one second Gear shift promotes region SP12F2, to promote bicycle chain 20 to be shifted to additional sprocket wheel SP12's from adjacent relatively minor sprocket SP11 Second gear-change operation.Axial direction of the adjacent relatively minor sprocket SP11 in the center of rotation axis A1 about bicycle rear sprocket assembly 14 It is adjacent with additional sprocket wheel SP12 on the D2 of direction, and do not have between additional sprocket wheel SP12 and adjacent relatively minor sprocket SP11 other Sprocket wheel.In this embodiment, adding sprocket wheel SP12 includes that multiple first gear shift promote region SP12F1, to promote the first gear shift behaviour Make.Additional sprocket wheel SP12 includes that multiple second gear shift promote region SP12F2, to promote the second gear-change operation.However, first changes Shelves promote the sum of region SP12F1 to be not limited to the embodiment.Second gear shift promotes the sum of region SP12F2 to be not limited to the implementation Example.
In this embodiment, adding sprocket wheel SP12 includes that multiple first gear shift promote recess S P12R1, to promote first to change Shelves operation.Additional sprocket wheel SP12 includes that multiple second gear shift promote recess S P12R2, to promote the second gear-change operation.First gear shift Recess S P12R1 setting is promoted to promote in the SP12F1 of region in the first gear shift.Second gear shift promotes recess S P12R2 to be arranged second Gear shift promotes in the SP12F2 of region.However, it may include that the first gear shift of substitution promotes recess portion that the first gear shift, which promotes region SP12F1, SP12R1 or another structure other than the first gear shift promotes recess S P12R1.Second gear shift promotes region SP12F2 can wrap It includes the second gear shift of substitution and promotes recess S P12R2 or another structure other than the second gear shift promotes recess S P12R2.
As shown in figure 19, sprocket wheel SP1 to SP12 is the component being separated from each other.However, sprocket wheel SP1 into SP12 at least one It is a to be at least partly wholely set with another into SP12 of sprocket wheel SP1.All sprocket wheel SP1 to SP12 can be each other It is formed integrally as single-piece integral unit.In this case, at least one of sprocket wheel SP3 to SP12 may include at least Ten inner spline gears.
Bicycle rear sprocket assembly 14 further includes sprocket support member 37, multiple spacers 38, the first ring 39A and the second ring 39B.First ring 39A is arranged between the second sprocket wheel SP3 and the second sprocket wheel SP4 on D2 in the axial direction.Second ring 39B is in axial direction It is arranged between the second sprocket wheel SP4 and additional sprocket wheel SP5 on the D2 of direction.Additional sprocket build is at being attached to sprocket support member 37.In this embodiment, it adds sprocket wheel SP5 to SP12 and is configured and attached to sprocket support member 37.
As shown in fig. 6, for example, additional sprocket wheel is attached to sprocket support member 37 by adhesive 37A.In the embodiment In, additional sprocket wheel SP5 to SP12 is attached to sprocket support member 37 by adhesive 37A.It therefore, can be by reducing or eliminating Metal fastenings mitigates the weight of bicycle rear sprocket assembly 14.However, at least one of additional sprocket wheel SP5 to SP12 can To be attached to sprocket support member 37 using another structure (including metal fastenings) in addition to adhesive 37A.Additional sprocket wheel At least one of SP5 to SP12 can be engaged in the case where no sprocket support member 37 with sprocket wheel support ontology 28.Chain Wheel supporting member 37 can be omitted from bicycle rear sprocket assembly 14.In addition, at least one of second sprocket wheel SP3 and SP4 Sprocket support member 37 can be attached to.
As shown in figure 4, locking component 32 includes tubular body 32A, male screw portion 32B and radial projection 32C.Tubulose sheet Body 32A includes first axis end 32D and the second axial end portion 32E.Second axial end portion 32E is about bicycle rear sprocket group It is opposite with first axis end 32D on the axial direction D2 of the center of rotation axis A1 of part 14.As shown in fig. 6, after bicycle Chain wheel assembly 14 is installed in the state of bicycle rear-hub component 12, and first axis end 32D is positioned to than the second axial end Axial centre plane CPL of the portion 32E closer to bicycle rear-hub component 12.CPL is perpendicular to rotation center for axial centre plane Axis A1.As shown in figure 3, axial centre plane CPL is limited to the axial length of bicycle rear-hub component 12 in axial side Divide equally on D2.
As shown in fig. 6, male screw portion 32B is arranged to first axis end 32D, to pacify in bicycle rear sprocket assembly 14 It is attached in the state of bicycle rear-hub component 12, the female threaded portion with the sprocket wheel support ontology 28 of bicycle rear-hub component 12 Divide 28A engagement.Radial projection 32C extends radially outwardly relative to center of rotation axis A1 from the second axial end portion 32E, certainly Driving rear sprocket assembly 14 is installed in the state of bicycle rear-hub component 12 limit the first sprocket wheel SP2 relative to bicycle after The axial movement of the sprocket wheel support ontology 28 of flower-drum component 12.
First sprocket wheel SP1 is facing inwardly toward side SP1G and the first outwardly facing side SP1H including first.First outwardly facing side It is opposite that SP1H is facing inwardly toward side SP1G with first on D2 in the axial direction.Radial projection 32C is configured in the first outwardly facing side SP1H abuts against the first sprocket wheel SP1.Radial projection 32C and the second chain is arranged in first sprocket wheel SP1 and SP2 in the axial direction It takes turns between SP3.First sprocket wheel SP1 and SP2, the second sprocket wheel SP3, the second sprocket wheel SP4 and the first ring 39A are in the axial direction on D2 It is maintained between radial projection 32C and sprocket support member 37.
As shown in figure 4, locking component 32 has tool engaging portion 32F.Tool engaging portion 32F is arranged in tubular body On the inner peripheral surface 32A1 of 32A, to be engaged with setting tool (not shown).In this embodiment, tool engaging portion 32F includes Multiple engaging groove 32G, to make locking component 32 be threadedly attached to sprocket wheel branch using male screw portion 32B and female portion 28A It is engaged when supportting ontology 28 with setting tool.
As shown in figs 20 and 21, sprocket wheel support ontology 28 includes being configured to engage with bicycle rear sprocket assembly 14 (Fig. 6) At least one external spline teeth 40.Sprocket wheel support ontology 28 includes being configured to engage with bicycle rear sprocket assembly 14 (Fig. 6) At least ten external spline teeths 40.That is, at least one external spline teeth 40 includes multiple external spline teeths 40.
It includes the base support 41 of tubulose that sprocket wheel, which supports ontology 28,.Base support 41 is prolonged along center of rotation axis A1 It stretches.External spline teeth 40 extends radially outwardly from base support 41.It includes larger diameter portion 42, flange 44 that sprocket wheel, which supports ontology 28, With multiple helical form external spline teeths 46.Larger diameter portion 42 and flange 44 extend radially outwardly from base support 41.It is larger straight Diameter portion 42 is arranged between multiple external spline teeths 40 and flange 44 on D2 in the axial direction.Larger diameter portion 42 and flange 44 are in axis It is arranged between multiple external spline teeths 40 and multiple helical form external spline teeths 46 on the D2 of direction.As shown in fig. 6, chain after bicycle Wheel assembly 14 is maintained between larger diameter portion 42 and the radial projection 32C of locking component 32 on D2 in the axial direction.It is larger Diameter portion 42 can have internal cavities, and the driving structure of such as one-way clutch structure is allowed to be contained in internal cavities It is interior.As needed, larger diameter portion 42 can be omitted from bicycle rear-hub component 12.
As shown in figure 22, at least one of at least ten external spline teeths 40 have axial splines tine length SL1.External splines Each of tooth 40 has axial splines tine length SL1.Axial splines tine length SL1 is equal to or less than 27mm.Axial splines Tine length SL1 is equal to or more than 22mm.In this embodiment, axial splines tine length SL1 is 24.9mm.However, axial splines Tine length SL1 is not limited to the embodiment and above range.
As shown in figure 23, the sum of at least ten external spline teeths 40 is equal to or more than 20.At least ten external spline teeths 40 Sum preferably equal to or greater than 25.The sum of at least ten external spline teeths 40 is preferably equal to or greater than 28.External spline teeth 40 Sum be preferably equal to or less than 72.In this embodiment, the sum of external spline teeth 40 is 29.However, external spline teeth 40 Sum is not limited to the embodiment and above range.
At least ten external spline teeths 40 have the first outer outer angular pitch PA12 of angular pitch PA11 and second.Flower outside at least ten At least two external spline teeths in key teeth 40 relative to center of rotation axis A1 with the first outer angular pitch PA11 circumferentially.Change sentence Talk about, at least two in multiple external spline teeths 40 relative to bicycle rear-hub component 12 center of rotation axis A1 with first Outer angular pitch PA11 is circumferentially.At least two external spline teeths at least ten external spline teeths 40 are relative to bicycle rear-hub The center of rotation axis A1 of component 12 with the second outer angular pitch PA12 circumferentially.In other words, in multiple external spline teeths 40 At least two relative to bicycle rear-hub component 12 center of rotation axis A1 with the second outer angular pitch PA12 circumferentially.? In the embodiment, the second outer angular pitch PA12 is different from the first outer angular pitch PA11.However, the second outer angular pitch PA12 can be big It causes to be equal to the first outer angular pitch PA11.
In this embodiment, D1 is arranged multiple external spline teeths 40 along circumferential direction with the first outer angular pitch PA11.It is multiple outer D1 is arranged two external spline teeths in spline tooth 40 along circumferential direction with the second outer angular pitch PA12.However, multiple external spline teeths 40 at least two external spline teeths can be arranged with D1 along circumferential direction with other outer angular pitch.
The range of first outer angular pitch PA11 is 5 degree to 36 degree.First outer angular pitch PA11's ranges preferably from 10 degree and arrives 20 degree.The range of first outer angular pitch PA11 is preferably equal to or less than 15 degree.In this embodiment, the first outer angular pitch PA11 It is 12 degree.However, the first outer angular pitch PA11 is not limited to the embodiment and above range.
The range of second outer angular pitch PA12 is 5 degree to 36 degree.In this embodiment, the second outer angular pitch PA12 is 24 Degree.However, the second outer angular pitch PA12 is not limited to the embodiment and above range.
At least one of external spline teeth 40 can have with another the second spline-shaped in external spline teeth 40 not The first same spline-shaped.At least one of at least ten external spline teeths 40 can have at least ten external spline teeths 40 Different the first spline size of another the second spline size.When along center of rotation axis A1 observation, external spline teeth 40 At least one of have the profile different from another the profile in external spline teeth 40.In this embodiment, external spline teeth 40X has first spline-shaped different from another the second spline-shaped in external spline teeth 40.External spline teeth 40X has First spline size different from another the second spline size in external spline teeth 40.However, as shown in figure 24, at least ten A external spline teeth 40 can have mutually the same spline-shaped.At least ten external spline teeths 40 can have mutually the same flower Key size.At least ten external spline teeths 40 can have mutually the same profile.
As shown in figure 25, each of at least ten external spline teeths 40 have external splines driving surface 48 and external splines non- Driving surface 50.Multiple external spline teeths 40 include multiple external splines driving surfaces 48, to receive during scrunching from bicycle The driving rotary force F1 of rear sprocket assembly 14 (Fig. 6).Multiple external spline teeths 40 include the non-driven surface 50 of multiple external splines.Outer flower Key driving surface 48 and bicycle rear sprocket assembly 14 are accessible, to receive during scrunching from bicycle rear sprocket assembly 14 The driving rotary force F1 of (Fig. 6).External splines driving surface 48 is towards opposite direction of rotation D12.In bicycle rear sprocket assembly 14 It is installed in the state of bicycle rear-hub component 12, interior flower of the external splines driving surface 48 towards bicycle rear sprocket assembly 14 Key driving surface 66.External splines driving surface 48 is arranged in along circumferential direction in the opposite side of D1 in the non-driven surface 50 of external splines. The non-driven surface 50 of external splines does not receive during scrunching from bicycle rear sprocket assembly 14 towards driving direction of rotation D11 Driving rotary force F1.In the state that bicycle rear sprocket assembly 14 is installed to bicycle rear-hub component 12, external splines is non- The non-driven surface 68 of internal spline of the driving surface 50 towards bicycle rear sprocket assembly 14.
At least ten external spline teeths 40 are respectively provided with circumferential maximum width MW1.Multiple external spline teeths 40 are respectively provided with circumferential direction Maximum width MW1.Circumferential maximum width MW1 is limited to receive the maximum width for the thrust F2 for being applied to external spline teeth 40.It is circumferential Maximum width MW1 is limited to the linear distance based on external splines driving surface 48.
Multiple external splines driving surfaces 48 include radially outermost edge 48A and radially inner most edge 48B.External splines driving Surface 48 extends to radially inner most edge 48B from radially outermost edge 48A.First circle of reference RC11 is limited to radially inner most edge 48B is upper and centered on center of rotation axis A1.First circle of reference RC11 and the non-driven surface 50 of external splines are in reference point 50R Intersection.Circumferential maximum width MW1 along circumferential direction D1 from radially inner most edge 48B linear extension to reference point 50R.
Multiple non-driven surfaces 50 of external splines include radially outermost edge 50A and radially inner most edge 50B.External splines is non- Driving surface 50 extends to radially inner most edge 50B from radially outermost edge 50A.In this embodiment, reference point 50R and radial direction Innermost edge 50B is overlapped.However, reference point 50R can be with Off-Radial innermost edge 50B.
The summation of circumferential maximum width MW1 is equal to or more than 55mm.The summation of circumferential maximum width MW1 preferably equivalent to or Greater than 60mm.The summation of circumferential maximum width MW1 is preferably equal to or less than 70mm.In this embodiment, circumferential maximum width The summation of MW1 is 60.1mm.However, the summation of circumferential maximum width MW1 is not limited to the embodiment and above range.
As shown in figure 26, at least one external spline teeth 40 have external splines top diameter DM11, external splines top diameter DM11 be equal to or Less than 34mm.External splines top diameter DM11 is equal to or less than 33mm.External splines top diameter DM11 is equal to or more than 29mm.In the embodiment In, external splines top diameter DM11 is 32.6mm.However, external splines top diameter DM11 is not limited to the embodiment and above range.
At least one external spline teeth 40 has external splines bottom diameter DM12.At least one external spline teeth 40 has external splines tooth root Circle RC12, external splines root circle RC12 have external splines bottom diameter DM12.However, external splines root circle RC12 can have and outer flower Key bottom diameter DM12 different another diameters.External splines bottom diameter DM12 is equal to or less than 32mm.External splines bottom diameter DM12 is equal to or small In 31mm.External splines bottom diameter DM12 is equal to or more than 28mm.In this embodiment, diameter DM12 in external splines bottom is 30.2mm.However, External splines bottom diameter DM12 is not limited to the embodiment and above range.
Larger diameter portion 42 has the outer diameter D M13 bigger than external splines top diameter DM11.The range of outer diameter D M13 arrives for 32mm 40mm.In this embodiment, outer diameter D M13 is 35mm.However, outer diameter D M13 is not limited to the embodiment.
As shown in figure 25, multiple external splines driving surfaces 48 include being limited to from radially outermost edge 48A to radial direction most The radical length RL11 of inward flange 48B.The summation of the radical length RL11 of multiple external splines driving surfaces 48 is equal to or more than 7mm.The summation of radical length RL11 is equal to or more than 10mm.The summation of radical length RL11 is equal to or more than 15mm.It is radial long The summation for spending RL11 is equal to or less than 36mm.In this embodiment, the summation of radical length RL11 is 16.6mm.However, radial The summation of length RL11 is not limited to the embodiment.
Multiple external spline teeths 40 have additional radical length RL12.Additional radical length RL12 is limited to respectively from external splines Radially end 40A of the root circle RC12 to multiple external spline teeths 40.The summation of additional radical length RL12 is equal to or more than 20mm.In this embodiment, the summation for adding radical length RL12 is 31.2mm.However, the summation of additional radical length RL12 It is not limited to the embodiment.
At least one of at least ten external spline teeths 40 are circumferentially symmetrical about reference line C L1.Reference line C L1 is from rotation Mandrel line A1 extends at least one of at least ten external spline teeths 40 along the radial direction about center of rotation axis A1 The radially circumferential central point CP1 of end 40A.However, at least one of external spline teeth 40 can have about reference line CL1 asymmetrically shape.At least one of at least ten external spline teeths 40 include that external splines driving surface 48 and external splines are non- Driving surface 50.
At least one surface in multiple external splines driving surfaces 48 has the first external splines surface angle AG11.Flower outside first Key table face angle AG11 is limited between external splines driving surface 48 and the first radial line L11.First radial line L11 is after bicycle The center of rotation axis A1 of flower-drum component 12 extends to the radially outermost edge 48A of external splines driving surface 48.First outer tooth pitch The outer angular pitch PA12 of angle PA11 or second is limited between the first adjacent radial line L11 (see, e.g. Figure 23).
At least one of non-driven surface 50 of external splines has the second external splines surface angle AG12.Second external splines surface Angle AG12 is limited between the non-driven surface 50 of external splines and the second radial line L12.Second radial line L12 is from bicycle rear-hub The center of rotation axis A1 of component 12 extends to the radially outermost edge 50A on the non-driven surface 50 of external splines.
In this embodiment, the second external splines surface angle AG12 is equal to the first external splines surface angle AG11.However, outside first Splined surfaces angle AG11 can be different from the second external splines surface angle AG12.
First external splines surface angle AG11 is equal to or less than 6 degree.First external splines surface angle AG11 is equal to or more than 0 degree. Second external splines surface angle AG12 is equal to or less than 6 degree.Second external splines surface angle AG12 is equal to or more than 0 degree.In the implementation In example, the first external splines surface angle AG11 is 5 degree.Second external splines surface angle AG12 is 5 degree.However, the first external splines surface Angle AG11 and the second external splines surface angle AG12 are not limited to the embodiment and above range.
As shown in Figure 27 and Figure 28, brake rotors support ontology 34 includes being configured to and bicycle brake rotor 16 (Fig. 1) The additional external spline teeth 52 of at least one of engagement.In this embodiment, brake rotors support ontology 34 is supported including additional basis Part 54 and multiple additional external spline teeths 52.Additional basis supporting element 54 has tubulose and along center of rotation axis A1 from flower-drum sheet Body 36 extends.Additional external spline teeth 52 extends radially outwardly from additional basis supporting element 54.The sum of additional external spline teeth 52 is 52.However, the sum of additional external spline teeth 52 is not limited to the embodiment.
As shown in figure 28, at least one additional external spline teeth 52 has additional external splines top diameter DM14.As shown in figure 29, attached External splines top diameter DM14 is added to be greater than external splines top diameter DM11.The outer diameter D M13 of additional external splines top diameter DM14 and larger diameter portion 42 It is roughly equal.However, additional external splines top diameter DM14 can be equal to or less than external splines top diameter DM11.Additional external splines top diameter DM14 can be different from the outer diameter D M13 of larger diameter portion 42.
As shown in figure 29, flower-drum ontology 36 includes the first spoke installation section 36A and the second spoke installation section 36B.It is more A first spoke SK1 is connected to the first spoke installation section 36A.Multiple second spoke SK2 are connected to the second spoke installation section 36B.In this embodiment, the first spoke installation section 36A includes multiple first attachment hole 36A1.First spoke SK1 is extended through Cross the first attachment hole 36A1.Second spoke installation section 36B includes multiple second attachment hole 36B1.Second spoke SK2 is extended through Cross the second attachment hole 36B1.As used herein term " spoke installation section " includes spoke construction opening as shown in figure 29 With flange shape shape spoke installation section is radially outward prolonged relative to the center of rotation axis of bicycle rear-hub component The construction and spoke installation section stretched are directly formed at the construction of the opening on the outer radial periphery surface of flower-drum ontology.
In axial direction D2 is spaced apart second spoke installation section 36B with the first spoke installation section 36A.First spoke peace Part 36A in axial direction D2 setting is filled to support between ontology 28 and the second spoke installation section 36B in sprocket wheel.Second spoke peace Part 36B in axial direction D2 setting is filled between the first spoke installation section 36A and brake rotors support ontology 34.
First spoke installation section 36A has first axis most external 36C.Second spoke installation section 36B has second Axially outermost 36D.First axis most external 36C includes being installed to the shape of cycle frame BF in bicycle rear-hub component 12 Surface towards the first vehicle frame BF1 on D2 in the axial direction under state.Second axially outermost 36D is included in bicycle rear-hub group Part 12 is installed in the state of cycle frame BF the surface towards the second vehicle frame BF2 on D2 in the axial direction.
Flower-drum ontology 36 includes first axis length AL1.First axis length AL1 is about bicycle rear sprocket assembly 14 Center of rotation axis A1 axial direction D2 on be limited to the first spoke installation section 36A first axis most external 36C and Between the second axially outermost 36D of second spoke installation section 36B.First axis length AL1 can be equal to or more than 55mm. First axis length AL1 can be equal to or more than 60mm.First axis length AL1 can be equal to or more than 65mm.In the implementation In example, first axis length AL1 can be 67mm.However, first axis length AL1 is not limited to the embodiment and above range. The example of first axis length AL1 includes 55.7mm, 62.3mm and 67mm.
As shown in figure 29, flower drum shaft 30 includes the axial vehicle frame abutment surface of first axis vehicle frame abutment surface 30B1 and second 30C1.First axis vehicle frame abutment surface 30B1 is configured to be installed to the shape of cycle frame BF in bicycle rear-hub component 12 State lower edge abuts against cycle frame BF about the axial direction D2 of the center of rotation axis A1 of bicycle rear sprocket assembly 14 First BF12.Second axial direction vehicle frame abutment surface 30C1 is configured to be installed to vehicle in bicycle rear-hub component 12 In axial direction D2 abuts against second BF22 of cycle frame BF in the state of frame BF.First axis vehicle frame abutment surface 30B1 is positioned to support ontology 28 closer to sprocket wheel on D2 in the axial direction than the second axial direction vehicle frame abutment surface 30C1.Sprocket wheel branch Support ontology 28 in the axial direction on D2 setting in first axis vehicle frame abutment surface 30B1 and the second axial direction vehicle frame abutment surface Between 30C1.
Flower drum shaft 30 is including being limited to first axle on the second axial length AL2, the second axial length AL2 in the axial direction D2 To between the axial vehicle frame abutment surface 30C1 of vehicle frame abutment surface 30B1 and second.Second axial length AL2 can be equal to or greatly In 140mm.Second axial length AL2 can be equal to or more than 145mm.Second axial length AL2 can be equal to or more than 147mm.Second axial length AL2 can be 148mm.However, the second axial length AL2 is not limited to the embodiment and above-mentioned model It encloses.The example of second axial length AL2 includes 142mm, 148mm and 157mm.
The ratio of first axis length AL1 and the second axial length AL2 can be equal to or more than 0.3.First axis length The ratio of AL1 and the second axial length AL2 can be equal to or more than 0.4.First axis length AL1 and the second axial length AL2 Ratio can be equal to or less than 0.5.For example, first axis length AL1 (67mm) and the second axial length AL2 (148mm) Ratio is about 0.45.However, the ratio of first axis length AL1 and the second axial length AL2 is not limited to the embodiment and above-mentioned Range.The example of the ratio of first axis length AL1 and the second axial length AL2 includes that about 0.42 (AL1 is 62.3mm and AL2 It is 148mm), or including about 0.39 (AL1 is 55.7mm and AL2 is 142mm).
As shown in fig. 6, sprocket wheel support ontology 28 includes first axis end 28B, the second axial end portion 28C and axial sprocket wheel Abutment surface 28D.In axial direction D2 is opposite with first axis end 28B by second axial end portion 28C.Axial centre plane CPL It will divide equally on second axial length AL2 in the axial direction D2.Axial sprocket wheel abutment surface 28D is positioned to than first axis end 28B is in the axial direction closer to the axial centre plane CPL of bicycle rear-hub component 12 on D2.Second axial end portion 28C is fixed Position is at the axial centre plane on D2 in the axial direction than axial sprocket wheel abutment surface 28D closer to bicycle rear-hub component 12 CPL.In this embodiment, axial sprocket wheel abutment surface 28D is arranged in larger diameter portion 42, however, axial sprocket wheel adjacency list Face 28D, which can according to need, to be arranged in the other parts of bicycle rear-hub component 12.Pacify in bicycle rear sprocket assembly 14 In the state of on sprocket wheel support ontology 28, axial sprocket wheel abutment surface 28D is contacted with bicycle rear sprocket assembly 14.It is axial Sprocket wheel abutment surface 28D in axial direction D2 towards first axis end 28B.
As shown in fig. 6, sprocket wheel arrangement axial length AL3 is limited to first axis vehicle frame abutment surface on D2 in the axial direction Between 30B1 and the axial sprocket wheel abutment surface 28D of sprocket wheel support ontology 28.In this embodiment, sprocket wheel arranges axial length The range of AL3 is 35mm to 45mm.For example, sprocket wheel arrangement axial length AL3 is 39.64mm.For example, by omitting larger diameter Portion 42, sprocket wheel arrangement axial length AL3 also extend to 44.25mm.However, sprocket wheel arrangement axial length AL3 is not limited to this Embodiment and above range.
Larger diameter portion 42 has axial direction farthest apart from first axis vehicle frame abutment surface 30B1 on D2 in the axial direction End 42A.Additional axial length AL4 is limited to from first axis vehicle frame abutment surface 30B1 to axial end on D2 in the axial direction Portion 42A.The range of additional axial length AL4 is 38mm to 47mm.The 44mm that may range from of additional axial length AL4 is arrived 45mm.The range of additional axial length AL4 may be 40mm to 41mm.In this embodiment, adding axial length AL4 is 44.25mm.However, additional axial length AL4 is not limited to the embodiment and above range.
The range of the larger diameter axial length AL5 of larger diameter portion 42 is 3mm to 6mm.In this embodiment, larger straight Diameter axial length AL5 is 4.61mm.However, larger diameter axial length AL5 is not limited to the embodiment and above range.
The range of the ratio of first axis length AL1 and sprocket wheel arrangement axial length AL3 is 1.2 to 1.7.For example, if First axis length AL1 is 55.7mm and sprocket wheel arrangement axial length AL3 is 39.64mm, then first axis length AL1 and chain The ratio of wheel arrangement axial length AL3 is 1.4.However, the ratio of first axis length AL1 and sprocket wheel arrangement axial length AL3 It is not limited to the embodiment and above range.For example, if first axis length AL1 is 62.3mm and sprocket wheel arrangement axial length AL3 is 39.64mm, then the ratio of first axis length AL1 and sprocket wheel arrangement axial length AL3 can be 1.57, or if First axis length AL1 is 67mm and sprocket wheel arrangement axial length AL3 is 39.64mm, then first axis length AL1 and sprocket wheel The ratio of arrangement axial length AL3 can be 1.69.
As shown in figure 30, sprocket support member 37 includes flower-drum joint portion 60 and multiple support arms 62.Multiple support arms 62 It extends radially outwardly from flower-drum joint portion 60.Support arm 62 includes the first attachment 62A to the 8th attachment 62H.Multiple intervals Part 38 includes multiple first spacer 38A, multiple second spacer 38B, multiple third spacer 38C, multiple 4th spacers 38D, multiple 5th spacer 38E, multiple 6th spacer 38F and multiple 7th spacer 38G.
As shown in fig. 6, the first spacer 38A is arranged between additional sprocket wheel SP5 and SP6.Second spacer 38B setting exists It adds between sprocket wheel SP6 and SP7.Third spacer 38C is arranged between additional sprocket wheel SP7 and SP8.4th spacer 38D is set It sets between additional sprocket wheel SP8 and SP9.5th spacer 38E is arranged between additional sprocket wheel SP9 and SP10.6th spacer 38F is arranged between additional sprocket wheel SP10 and SP11.7th spacer 38G is arranged between additional sprocket wheel SP11 and SP12.
Additional sprocket wheel SP6 and the first spacer 38A is attached to the first attachment 62A by adhesive 37A.Additional sprocket wheel SP7 and the second spacer 38B is attached to the second attachment 62B by adhesive 37A.Additional sprocket wheel SP8 and third spacer 38C Third attachment 62C is attached to by adhesive 37A.Additional sprocket wheel SP9 and the 4th spacer 38D is attached by adhesive 37A To the 4th attachment 62D.Additional sprocket wheel SP10 and the 5th spacer 38E is attached to the 5th attachment 62E by adhesive 37A. Additional sprocket wheel SP11 and the 6th spacer 38F is attached to the 6th attachment 62F by adhesive 37A.Additional sprocket wheel SP12 and the Seven spacer 38G are attached to the 7th attachment 62G by adhesive 37A.Additional sprocket wheel SP5 and the second ring 38B passes through adhesive 37A is attached to the 8th attachment 62H.Flower-drum joint portion 60, sprocket wheel SP1 to sprocket wheel SP4, the first ring 39A and the second ring 39B are in axis It is maintained on the D2 of direction between larger diameter portion 42 and the radial projection 32C of locking component 32.
In this embodiment, each of sprocket wheel SP1 to sprocket wheel SP12 is made of such as metal material of aluminium, iron or titanium. Sprocket support member 37 is by including that the nonmetallic materials of resin material are made.First to the 7th spacer 38A to 38G, the first ring Each of 39A and the second ring 39B are made of the nonmetallic materials of such as resin material.However, sprocket wheel SP1 to sprocket wheel SP12 At least one of can be at least partly made of nonmetallic materials.The 37, first to the 7th spacer 38A of sprocket support member It can be at least partly by such as metal material of aluminium, iron or titanium at least one of 38G, the first ring 39A and the second ring 39B It is made.
As shown in fig. 7, the first sprocket wheel SP1 includes the first open S P1K.First open S P1K has the first minimum diameter MD1.As shown in figure 31, in the state that bicycle rear sprocket assembly 14 is installed to sprocket wheel support ontology 28, locking component 32 Tubular body 32A extends through the first open S P1K of the first sprocket wheel SP1.The first open S P1K of first sprocket wheel SP1 is configured to So that in the state that bicycle rear sprocket assembly 14 is installed to sprocket wheel support ontology 28, the tubular body 32A of locking component 32 First axis end 32D pass through the first sprocket wheel SP1 the first open S P1K.The first axis end of sprocket wheel support ontology 28 28B is spaced apart with the first open S P1K of the first sprocket wheel SP1, and does not extend across the first open S P1K.First minimum diameter MD1 Less than the minimum outer diameter MD28 of the sprocket wheel support ontology 28 of bicycle rear-hub component 12.In this embodiment, minimum outer diameter MD28 is equal to the external splines bottom diameter DM12 (Figure 26) of multiple external spline teeths 40 of sprocket wheel support ontology 28.
As shown in figure 31, tubular body 32A has the first external diameter ED1 equal to or less than 27mm.First external diameter ED1 is equal to Or it is greater than 26mm.Radial projection 32C has the second external diameter ED2 equal to or less than 32mm.Second external diameter ED2 is equal to or more than 30mm.In this embodiment, first external diameter ED1 is 26.2mm.Second external diameter ED2 is 30.8mm.However, first external diameter ED1 and At least one of second external diameter ED2 is not limited to the embodiment and above range.
Radial projection 32C has the axial width ED3 that in axial direction D2 is limited.For example, radial projection 32C's is axial wide Spending ED3 is 2mm.However, axial width ED3 is not limited to the embodiment.
Locking component 32 has the axial direction that in axial direction D2 is limited to first axis end 32D from radial projection 32C long Spend ED4.The axial length ED4 of locking component 32 is 10mm.However, axial length ED4 is not limited to the embodiment.
As shown in figure 8, the first sprocket wheel SP2 includes the first open S P2K.That is, multiple first sprocket wheel SP1 and SP2 include One opening.First open S P2K has the first minimum diameter MD2.As shown in figure 31, it is installed in bicycle rear sprocket assembly 14 In the state that sprocket wheel supports ontology 28, the tubular body 32A of locking component 32 extends through the first opening of the first sprocket wheel SP2 SP2K.The first open S P2K of the first axis end 28B and the first sprocket wheel SP2 of sprocket wheel support ontology 28 are spaced apart, without Extend through the first open S P2K.First minimum diameter MD2 is less than the sprocket wheel support ontology 28 of bicycle rear-hub component 12 Minimum outer diameter MD28.
As shown in figure 9, the second sprocket wheel SP3 includes the second open S P3K.Second open S P3K has the second minimum diameter MD3.As shown in figure 31, in the state that bicycle rear sprocket assembly 14 is installed to sprocket wheel support ontology 28, locking component 32 Tubular body 32A and sprocket wheel support ontology 28 extend through the second open S P3K of the second sprocket wheel SP3.Sprocket wheel supports ontology 28 First axis end 28B is in axial direction arranged between the second open S P3K and the first open S P1K on D2.Sprocket wheel support is originally The first axis end 28B of body 28 is arranged between the second open S P3K and the first open S P2K on D2 in the axial direction.Second Minimum diameter MD3 is equal to or more than the minimum outer diameter MD28 of the sprocket wheel support ontology 28 of bicycle rear-hub component 12.
As shown in Figure 10, the second sprocket wheel SP4 includes the second open S P4K.That is, multiple second sprocket wheel SP3 and SP4 include Second opening.Second open S P4K has the second minimum diameter MD4.As shown in figure 31, it is installed in bicycle rear sprocket assembly 14 In the state of supporting ontology 28 to sprocket wheel, sprocket wheel support ontology 28 extends through the second open S P4K of the second sprocket wheel SP4.Sprocket wheel Support the first axis end 28B of ontology 28 in the axial direction on D2 setting the second open S P4K and the first open S P1K it Between.Second minimum diameter MD4 is equal to or more than the minimum outer diameter MD28 of the sprocket wheel support ontology 28 of bicycle rear-hub component 12.
As shown in figure 32, the first sprocket wheel SP2 includes being configured to support ontology 28 with the sprocket wheel of bicycle rear-hub component 12 At least ten inner spline gears 63 of engagement.At least ten inner spline gears 63 are arranged to the first open S P2K.At least ten internal splines Tooth 63 is set as the first torque transfer arrangement of the first sprocket wheel SP2, as described below.
The sum of at least ten inner spline gears 63 of first sprocket wheel SP2 is equal to or more than 20.At least the ten of first sprocket wheel SP2 The sum of a inner spline gear 63 is equal to or more than 28.The sum of inner spline gear 63 is equal to or less than 72.In this embodiment, interior flower The sum of key teeth 63 is 29.However, the sum of inner spline gear 63 is not limited to the embodiment and above range.
As shown in figure 9, the second sprocket wheel SP3 includes being configured to support ontology 28 to connect with the sprocket wheel of bicycle rear-hub component 12 At least ten inner spline gears 64 closed.In this embodiment, at least ten inner spline gears 64 of the second sprocket wheel SP3 are minimum by second Diameter MD3 is limited to the internal spline top diameter of at least ten inner spline gears 64.
The sum of at least ten inner spline gears 64 of second sprocket wheel SP3 is equal to or more than 20.At least the ten of second sprocket wheel SP3 The sum of a inner spline gear 64 is equal to or more than 28.The sum of inner spline gear 64 is equal to or less than 72.In this embodiment, interior flower The sum of key teeth 64 is 29.However, the sum of inner spline gear 64 is not limited to the embodiment and above range.
As shown in Figure 10, the second sprocket wheel SP4 includes being configured to support ontology 28 with the sprocket wheel of bicycle rear-hub component 12 At least ten inner spline gears 65 of engagement.That is, multiple second sprocket wheel SP3 and SP4 include being configured to and bicycle rear-hub group At least ten inner spline gears that the sprocket wheel support ontology 28 of part 12 engages.In this embodiment, at least ten of the second sprocket wheel SP4 Second minimum diameter MD4 is limited to the internal spline top diameter of at least ten inner spline gears 65 by inner spline gear 65.
The sum of at least ten inner spline gears 65 of second sprocket wheel SP4 is equal to or more than 20.At least the ten of second sprocket wheel SP4 The sum of a inner spline gear 65 is equal to or more than 28.The sum of inner spline gear 65 is equal to or less than 72.In this embodiment, interior flower The sum of key teeth 65 is 29.However, the sum of inner spline gear 65 is not limited to the embodiment and above range.
As shown in figure 33, at least ten inner spline gears 64 of the second sprocket wheel SP3 have angular pitch PA21 and second in first Interior angular pitch PA22.At least two inner spline gears at least ten inner spline gears 64 of second sprocket wheel SP3 are relative to bicycle The center of rotation axis A1 of rear sprocket assembly 14 with angular pitch PA21 in first circumferentially.In at least ten inner spline gears 64 At least two inner spline gears are adjacent to each other on circumferential direction D1, and not other spline tooth therebetween.In other words, multiple In inner spline gear 64 at least two relative to bicycle rear sprocket assembly 14 center of rotation axis A1 with angular pitch in first PA21 is circumferentially.At least other two inner spline gears at least ten inner spline gears 64 of second sprocket wheel SP3 are relative to rotation Turn central axis A1 with angular pitch PA22 in second circumferentially.In at least ten inner spline gears 64 of second sprocket wheel SP3 extremely Other few two inner spline gears are adjacent to each other on circumferential direction D1, and not other spline tooth therebetween.In other words, In multiple inner spline gears 64 of two sprocket wheel SP3 at least two relative to center of rotation axis A1 with angular pitch PA22 weeks in second To arrangement.In this embodiment, angular pitch PA22 is different from angular pitch PA21 in first in second.However, angular pitch in second PA22 may be approximately equal to angular pitch PA21 in first.
In this embodiment, inner spline gear 64 on circumferential direction D1 with first in angular pitch PA21 circumferentially.Interior flower Two inner spline gears of key teeth 64 along circumferential direction D1 with angular pitch PA22 arrangement in second.However, inner spline gear 64 is at least Two inner spline gears can be arranged with D1 along circumferential direction with other interior angular pitch.
The range of angular pitch PA21 is 5 degree to 36 degree in first.The range of angular pitch PA21 is 10 degree to 20 degree in first. Angular pitch PA21 is equal to or less than 15 degree in first.In this embodiment, for example, angular pitch PA21 is 12 degree in first.However, Angular pitch PA21 is not limited to the embodiment and above range in first.
The range of angular pitch PA22 is 5 degree to 36 degree in second.In this embodiment, angular pitch PA22 is 24 in second Degree.However, angular pitch PA22 is not limited to the embodiment and above range in second.
At least one of at least ten inner spline gears 64 of second sprocket wheel SP3 have at least ten inner spline gears 64 Different the first spline-shaped of another the second spline-shaped.In at least ten inner spline gears 64 of second sprocket wheel SP3 At least one has first spline size different from another the second spline size at least ten inner spline gears 64.Extremely At least one of few ten inner spline gears 64 have different from another the cross sectional shape at least ten inner spline gears 64 Cross sectional shape.However, as shown in figure 34, inner spline gear 64 can have mutually the same shape.At least ten inner spline gears 64 can have mutually the same size.At least ten inner spline gears 64 can have mutually the same cross sectional shape.
As shown in figure 35, at least one of at least ten inner spline gears 64 include internal spline driving surface 66.At least ten At least one of a inner spline gear 64 includes the non-driven surface 68 of internal spline.At least ten inner spline gears 64 include multiple interior flowers Key driving surface 66, to receive the driving rotary force F1 for coming from bicycle rear-hub component 12 (Fig. 6) during scrunching.At least ten A inner spline gear 64 includes the non-driven surface 68 of multiple internal splines.Internal spline driving surface 66 can connect with sprocket wheel support ontology 28 Touching, driving rotary force F1 accessary sprocket wheel SP1 is transmitted to sprocket wheel support ontology 28 during scrunching.66 face of internal spline driving surface To driving direction of rotation D11.In the state that bicycle rear sprocket assembly 14 is installed to bicycle rear-hub component 12, internal spline External splines driving surface 48 of the driving surface 66 towards bicycle rear-hub component 12.Including the non-driven surface 68 of internal spline is arranged In the opposite side of the circumferential direction D1 of spline driving surface 66.The non-driven surface 68 of internal spline towards opposite direction of rotation D12, During scrunching driving rotary force F1 will not accessary sprocket wheel SP1 be transmitted to sprocket wheel support ontology 28.Pacify in bicycle rear sprocket assembly 14 It is attached in the state of bicycle rear-hub component 12, outer flower of the non-driven surface 68 of internal spline towards bicycle rear-hub component 12 The non-driven surface 50 of key.
At least ten inner spline gears 64 are respectively provided with circumferential maximum width MW2.Multiple inner spline gears 64 are respectively provided with circumferential direction Maximum width MW2.Circumferential maximum width MW2 is limited to receive the maximum width for the thrust F3 for being applied to inner spline gear 64.It is circumferential Maximum width MW2 is limited to the linear distance based on internal spline driving surface 66.
Multiple internal spline driving surfaces 66 include radially outermost edge 66A and radially inner most edge 66B.Second circle of reference RC21 is limited on radially outermost edge 66A, and centered on center of rotation axis A1.Second circle of reference RC21 and internal spline Intersect in reference point 68R on non-driven surface 68.Circumferential maximum width MW2 along circumferential direction D1 from radially inner most edge 66B straight line Extend to reference point 68R.
The non-driven surface 68 of internal spline includes radially outermost edge 68A and radially inner most edge 68B.The non-driven table of internal spline Face 68 extends to radially inner most edge 68B from radially outermost edge 68A.Reference point 68R is arranged in radially outermost edge 68A and diameter To between innermost edge 68B.
The summation of circumferential maximum width MW2 is equal to or more than 40mm.The summation of circumferential maximum width MW2 can be equal to or greatly In 45mm.The summation of circumferential maximum width MW2 can be equal to or more than 50mm.In this embodiment, circumferential maximum width MW2 Summation is 50.8mm.However, the summation of circumferential maximum width MW2 is not limited to the embodiment.
As shown in figure 36, at least ten inner spline gears 64 of the second sprocket wheel SP3 have internal spline bottom diameter DM21.Second sprocket wheel There is at least one inner spline gear 64 of SP3 internal spline root circle RC22, internal spline root circle RC22 to have internal spline bottom diameter DM21.Internal spline bottom diameter DM21 is equal to or less than 34mm.The internal spline bottom diameter DM21 of second sprocket wheel SP3 is equal to or less than 33mm. The internal spline bottom diameter DM21 of second sprocket wheel SP3 is equal to or more than 29mm.In this embodiment, the internal spline bottom of the second sprocket wheel SP3 Diameter DM21 is 32.8mm.However, the internal spline bottom diameter DM21 of the second sprocket wheel SP3 is not limited to the embodiment and above range.
There is at least ten inner spline gears 64 of second sprocket wheel SP3 internal spline top diameter DM22, internal spline top diameter DM22 to be equal to Or it is less than 32mm.Internal spline top diameter DM22 is equal to or less than 31mm.Internal spline top diameter DM22 is equal to or more than 25mm.Internal spline top Diameter DM22 is equal to or more than 28mm.In this embodiment, diameter DM22 in internal spline top is 30.4mm.However, internal spline top diameter DM22 It is not limited to the embodiment and above range.
As shown in figure 18, adding sprocket wheel SP12 has maximum tooth tip diameter TD12.Maximum tooth tip diameter TD12 is by multiple The maximum outside diameter that sprocket SP12B is limited.The range of the ratio of internal spline bottom diameter DM21 (Figure 36) and maximum tooth tip diameter TD12 It is 0.15 to 0.18.In this embodiment, the ratio of internal spline bottom diameter DM21 and maximum tooth tip diameter TD12 are 0.15.However, The ratio of internal spline bottom diameter DM21 and maximum tooth tip diameter TD12 are not limited to the embodiment and above range.
As shown in figure 35, multiple internal spline driving surfaces 66 include radially outermost edge 66A and radially inner most edge 66B. Multiple internal spline driving surfaces 66 include the radical length being limited to from radially outermost edge 66A to radially inner most edge 66B RL21.The summation of the radical length RL21 of multiple internal spline driving surfaces 66 is equal to or more than 7mm.The summation of radical length RL21 Equal to or more than 10mm.The summation of radical length RL21 is equal to or more than 15mm.The summation of radical length RL21 is equal to or less than 36mm.In this embodiment, the summation of radical length RL21 is 16.6mm.However, the summation of radical length RL21 is not limited to this Embodiment and above range.
Multiple inner spline gears 64 have additional radical length RL22.Additional radical length RL22 is limited to respectively from internal spline Radially inner most end 64A of the root circle RC22 to multiple inner spline gears 64.The summation of additional radical length RL22 is equal to or more than 12mm.In this embodiment, the summation for adding radical length RL22 is 34.8mm.However, the summation of additional radical length RL22 It is not limited to the embodiment and above range.
At least one of at least ten inner spline gears 64 of second sprocket wheel SP3 are circumferentially symmetrical about reference line C L2.With reference to Line CL2 is extended at least ten inner spline gears 64 from center of rotation axis A1 along the radial direction about center of rotation axis A1 The radially inner most end 64A of at least one circumferential central point CP2.However, at least one of inner spline gear 64 can have About reference line C L2 asymmetrically shape.At least one of inner spline gear 64 includes internal spline driving surface 66 and interior flower The non-driven surface 68 of key.
Internal spline driving surface 66 has the first internal spline surface angle AG21.In first internal spline surface angle AG21 is limited to Between spline driving surface 66 and the first radial line L21.Rotation center of the first radial line L21 from bicycle rear sprocket assembly 14 Axis A1 extends to the radially outermost edge 66A of internal spline driving surface 66.Angular pitch in angular pitch PA21 or second in first PA22 is limited between the first adjacent radial line L21 (see, e.g. Figure 33).
The non-driven surface 68 of internal spline has the second internal spline surface angle AG22.Second internal spline surface angle AG22 is limited to Between the non-driven surface 68 of internal spline and the second radial line L22.Rotation of the second radial line L22 from bicycle rear sprocket assembly 14 Central axis A1 extends to the radially outermost edge 68A on the non-driven surface 68 of internal spline.
In this embodiment, the second internal spline surface angle AG22 is equal to the first internal spline surface angle AG21.However, in first Splined surfaces angle AG21 can be different from the second internal spline surface angle AG22.
The range of first internal spline surface angle AG21 is 0 degree to 6 degree.The range of second internal spline surface angle AG22 is 0 degree To 6 degree.In this embodiment, the first internal spline surface angle AG21 is 5 degree.Second internal spline surface angle AG22 is 5 degree.However, First internal spline surface angle AG21 and the second internal spline surface angle AG22 are not limited to the embodiment and above range.
As shown in figure 37, inner spline gear 64 is engaged with external spline teeth 40, and rotary force F1 will be driven to pass from the second sprocket wheel SP3 It is delivered to sprocket wheel support ontology 28.Internal spline driving surface 66 and external splines driving surface 48 are accessible, will drive rotary force F1 Sprocket wheel support ontology 28 is transmitted to from the second sprocket wheel SP3.It is contacted in internal spline driving surface 66 with external splines driving surface 48 Under state, the non-driven surface 68 of internal spline is spaced apart with the non-driven surface 50 of external splines.
The inner spline gear 65 of the inner spline gear 63 of first sprocket wheel SP2 and the second sprocket wheel SP4 have in the second sprocket wheel SP3 64 basically same structure of spline tooth.Therefore, for simplicity, not will be described in detail here.
As shown in Fig. 2, sprocket support member 37 includes being configured to support ontology with the sprocket wheel of bicycle rear-hub component 12 At least ten inner spline gears 76 of 28 engagements.Multiple inner spline gears 76 have and multiple 64 basically same structures of inner spline gear. Therefore, for simplicity, not will be described in detail here.
As shown in figure 38, the first sprocket wheel SP1 includes the first torque transfer arrangement SP1T, and the first torque transfer arrangement SP1T is set It sets to first and is facing inwardly toward side SP1H, be transmitted to sprocket wheel support ontology 28 will directly or indirectly scrunch torque.In the implementation In example, the first torque transfer arrangement SP1T includes multiple first torque transmitting tooth SP1T1, will scrunch torque indirect transfer to chain Wheel support ontology 28.First torque transfer arrangement SP1T includes that at least ten first torques transmit tooth SP1T1.Preferably, at least The sum of ten the first torque transmitting tooth SP1T1 is equal to or more than 20.It is highly preferred that at least ten first torques transmit tooth The sum of SP1T1 is equal to or more than 28.In this embodiment, the sum of at least ten first torques transmitting tooth SP1T1 is 29.So And the sum of at least ten first torques transmitting tooth SP1T1 is not limited to the embodiment and above range.
As shown in Figure 38 and Figure 39, the first sprocket wheel SP2 is facing inwardly toward side SP2H and the first outwardly facing side including first SP2G.First outwardly facing side SP2G is on the axial direction D2 about the center of rotation axis A1 of bicycle rear sprocket assembly 14 It is opposite that side SP2H is facing inwardly toward with first.First sprocket wheel SP2 includes the first torque transfer arrangement SP2M, the first torque transfer arrangement SP2M, which is arranged to first, is facing inwardly toward side SP2H, is transmitted to sprocket wheel support ontology 28 will directly or indirectly scrunch torque.? In the embodiment, the inner spline gear 63 of the first sprocket wheel SP2 can also be referred to as the first torque transmitting tooth 63.First torque transmitting knot Structure SP2M includes multiple first torque transmitting teeth 63, will scrunch torque and be directly delivered to sprocket wheel support ontology 28.First torque Transferring structure SP2M includes that at least ten first torques transmit tooth 63.Preferably, at least ten first torques transmitting tooth 63 is total Number is equal to or more than 20.It is highly preferred that the sum of at least ten first torques transmitting tooth 63 is equal to or more than 28.In the embodiment In, the sum that at least ten first torques transmit tooth 63 is 29.However, the sum of at least ten first torques transmitting tooth 63 is not It is limited to the embodiment and above range.First torque transmitting tooth 63 can also be referred to as inner spline gear 63.
As shown in figure 39, the first sprocket wheel SP2 includes the second torque transfer arrangement SP2T, comes from the first sprocket wheel SP1 to receive Scrunch torque.Second torque transfer arrangement SP2T is arranged on the first outwardly facing side SP2G.In this embodiment, it second turns round Square transferring structure SP2T includes multiple second torque transmitting tooth SP2T1.Preferably, the sum etc. of the second torque transmitting tooth SP2T1 In or greater than 20.It is highly preferred that the sum of the second torque transmitting tooth SP2T1 is equal to or more than 28.In this embodiment, it second turns round The sum that square transmits tooth SP2T1 is 29.However, the sum of the second torque transmitting tooth SP2T1 is not limited to the embodiment and above-mentioned model It encloses.First torque transfer arrangement SP1T is engaged with the second torque transfer arrangement SP2T.Multiple first torques transmitting tooth SP1T1 and more A second torque transmitting tooth SP2T1 engagement, drives rotary force F1 with transmitting.
As shown in figure 23 and figure 24, sprocket wheel support ontology 28 includes the flower that the axial end portion of base support 41 is arranged in Drum indicator 28I.When along center of rotation axis A1 observation, the area of the second outer angular pitch PA12 is arranged in flower-drum indicator 28I In domain.In this embodiment, flower-drum indicator 28I includes a little.However, flower-drum indicator 28I may include such as triangle and The other shapes of line.In addition, flower-drum indicator 28I can be and for example be attached to sprocket wheel branch by the integrated structure of such as adhesive Support the independent component of ontology 28.The position of flower-drum indicator 28I is not limited to the embodiment.
As shown in fig. 7, the first sprocket wheel SP1 includes the sprocket wheel indicator for the axial end portion that sprocket body SP1A is arranged in SP1I.In this embodiment, sprocket wheel indicator SP1I includes a little.However, sprocket wheel indicator SP1I may include such as triangle With the other shapes of line.In addition, sprocket wheel indicator SP1I can be and for example be attached to chain by the integrated structure of such as adhesive Take turns the independent component of SP1.The position of sprocket wheel indicator SP1I is not limited to the embodiment.It can be set in sprocket wheel indicator SP1I Any one of his sprocket wheel SP2 to SP12.Sprocket support member 37 also can be set in sprocket wheel indicator SP1I.
As shown in fig. 6, bicycle rear-hub component 12 further includes flywheel structure 78.Sprocket wheel supports ontology 28 to pass through flywheel knot Structure 78 is operably linked to flower-drum ontology 36.Flywheel structure 78 is configured to sprocket wheel support ontology 28 being connected to flower-drum ontology 36, to make sprocket wheel support ontology 28 with flower-drum ontology 36 together along driving direction of rotation D11 (Fig. 5) rotation during scrunching.Fly Wheel construction 78 is configured to allow for the sprocket wheel during sliding to support ontology 28 relative to flower-drum ontology 36 along opposite direction of rotation D12 (Fig. 5) rotation.Therefore, flywheel structure 78 can be interpreted one-way clutch structure 78.Flywheel structure is discussed in detail below 78。
Bicycle rear-hub component 12 includes first bearing 79A and second bearing 79B.First bearing 79A and second bearing 79B setting supports between ontology 28 and flower drum shaft 30 in sprocket wheel, can revolve relative to flower drum shaft 30 around center of rotation axis A1 Turn ground support sprocket wheel and supports ontology 28.
In this embodiment, sprocket wheel support ontology 28, brake rotors support each of ontology 34 and flower-drum ontology 36 It is made of such as metal material of aluminium, iron or titanium.However, sprocket wheel support ontology 28, brake rotors support ontology 34 and flower-drum At least one of ontology 36 can be made of nonmetallic materials.
As shown in figure 40, flywheel structure 78 includes the first ratchet component 80 and the second ratchet component 82.First ratchet component 80 are configured to engage in a manner of transmitting torque with one in flower-drum ontology 36 and sprocket wheel support ontology 28.Second ratchet component 82 are configured to engage in a manner of transmitting torque with another in flower-drum ontology 36 and sprocket wheel support ontology 28.In the embodiment In, the first ratchet component 80 is engaged in a manner of transmitting torque with sprocket wheel support ontology 28.Second ratchet component 82 and flower-drum sheet Body 36 is engaged in a manner of transmitting torque.However, the first ratchet component 80 can be configured to flower-drum ontology 36 to transmit torque Mode engage.Second ratchet component 82 can be configured to support ontology 28 to engage in a manner of transmitting torque with sprocket wheel.
First ratchet component 80 is installed to sprocket wheel support ontology 28, to support ontology 28 together relative to flower-drum sheet with sprocket wheel Body 36 is rotated around center of rotation axis A1.Second ratchet component 82 is installed to flower-drum ontology 36, with flower-drum ontology 36 together It is rotated relative to sprocket wheel support ontology 28 around center of rotation axis A1.In first ratchet component 80 and the second ratchet component 82 Each is with annular shape.
At least one of first ratchet component 80 and the second ratchet component 82 are relative to flower drum shaft 30 in about rotation It is moved on the axial direction D2 of mandrel line A1.In this embodiment, in the first ratchet component 80 and the second ratchet component 82 Each is moved relative in flower drum shaft 30 in the axial direction D2.Second ratchet component 82 is relative to flower-drum ontology 36 in axial direction It is moved on the D2 of direction.First ratchet component 80 is relative to removable on sprocket wheel support ontology 28 in the axial direction D2.
Flower-drum ontology 36 includes flywheel shell 36H with annular shape.In axial direction D2 extends flywheel shell 36H. First ratchet component 80 and the second ratchet component 82 are arranged in the assembled state in flywheel shell 36H.
As shown in figure 41, the first ratchet component 80 includes at least one first hook tooth 80A.In this embodiment, at least One the first hook tooth 80A includes multiple first hook tooth 80A.D1 is arranged to mention multiple first hook tooth 80A along circumferential direction For sawtooth.
As shown in figure 42, the second ratchet component 82 includes being configured to at least one the first hook tooth 80A to transmit torque At least one second hook tooth 82A for engaging of mode.At least one second hook tooth 82A and at least one first hook tooth Rotary force F1 accessary sprocket wheel support ontology 28 is transmitted to flower-drum ontology 36 (Figure 40) by 80A engagement.In this embodiment, at least One the second hook tooth 82A includes be configured to engage in a manner of transmitting torque with multiple first hook tooth 80A multiple second Hook tooth 82A.D1 is arranged to provide sawtooth multiple second hook tooth 82A along circumferential direction.Multiple second hook tooth 82A with it is multiple First hook tooth 80A is engageable.In the state that the second hook tooth 82A is engaged with the first hook tooth 80A, the first ratchet component 80 It is rotated together with the second ratchet component 82.
As shown in Figure 41 and Figure 42, sprocket wheel supports ontology 28 that there is peripheral surface 28P, peripheral surface 28P to have the first spiral shell Revolve shape spline 28H.First ratchet component 80 is configured to support ontology 28 to engage in a manner of transmitting torque with sprocket wheel, and including With the second helical form spline 80H of the first helical form spline 28H cooperation.The first of the application of ontology 28 is being supported to push away by accessary sprocket wheel The driving period of power, via the cooperation of the second helical form spline 80H and the first helical form spline 28H, the first ratchet component 80 exists It is moveably mounted on axial direction D2 relative to sprocket wheel support ontology 28.In this embodiment, the first helical form spline 28H packet Include multiple helical form external spline teeths 46.Second helical form spline 80H includes multiple with the cooperation of multiple helical form external spline teeths 46 Helical form inner spline gear 80H1.
As shown in figure 43, flower-drum ontology 36 includes inner peripheral surface 36S and at least one first tooth 36T.At least one first Tooth 36T is arranged on inner peripheral surface 36S.In this embodiment, flywheel shell 36H includes inner peripheral surface 36S.Flower-drum ontology 36 wraps Include multiple first tooth 36T.Multiple first tooth 36T are arranged on inner peripheral surface 36S, and relative to center of rotation axis A1 from interior Perimeter surface 36S is extended radially inwardly.D1 is arranged first tooth 36T along circumferential direction, between the two neighboring tooth of the first tooth 36T Limit multiple recess portion 36R.
Second ratchet component 82 includes flower-drum body engagement part 82E, flower-drum body engagement part 82E and flower-drum ontology 36 It is engaged in a manner of transmitting torque, rotary force F1 is transmitted from the first ratchet component 80 via flower-drum body engagement part 82E To flower-drum ontology 36.One in flower-drum body engagement part 82E and flower-drum ontology 36 includes that at least one radially extended is dashed forward It rises.Another in flower-drum body engagement part 82E and flower-drum ontology 36 includes at least one engaged at least one protrusion Recess portion.In this embodiment, flower-drum body engagement part 82E includes that at least one radially extended as at least one protrusion is dashed forward Play 82T.Flower-drum ontology 36 includes at least one recess portion 36R engaged at least one protrusion 82T.In this embodiment, flower-drum Body engagement part 82E includes multiple protrusion 82T.Multiple protrusion 82T are engaged with multiple recess portion 36R.
As shown in figure 42, the peripheral surface 28P of sprocket wheel support ontology 28 has leader 28G, leader 28G structure It causes to guide the first ratchet component 80 towards flower-drum ontology 36 during sliding.Leader 28G is arranged to and the first spiral Shape spline 28H limits obtuse angle AG28 (Figure 48).It includes multiple leader 28G that sprocket wheel, which supports ontology 28,.Leader 28G construction At slide or coast during the first ratchet component 80 guided towards flower-drum ontology 36.During sliding, leader 28G guides the first ratchet component 80 towards flower-drum ontology 36, with discharge at least one first hook tooth 80A (Figure 41) at least Being engaged between one the second hook tooth 82A.Leader 28G is configured to make the first ratchet component 80 in axial direction D2 It is mobile far from the second ratchet component 82.Leader 28G extends relative to the sprocket wheel support at least along circumferential direction D1 of ontology 28.Draw Part 28G is led to extend from a tooth at least along circumferential direction D1 in multiple helical form external spline teeths 46.Although in the embodiment Middle leader 28G and helical form external spline teeth 46 are integrally provided as single one-piece integral member, but leader 28G can be The component isolated with multiple helical form external spline teeths 46.During slide, the first ratchet component 80 and the second ratchet component 82 by It is smoothly disengaged from each other in leader 28G, is especially arranged in leader 28G relative to the first helical form spline In the case that 28H limits obtuse angle AG28.Due at least one first hook tooth 80A and at least one second ratchet during sliding Tooth 82A is smoothly separated each other, so this, which is also resulted in, reduces noise during sliding.
As shown in figure 40, bicycle rear-hub component 12 further includes biasing member 84.Biasing member 84 is arranged in flower-drum sheet Between body 36 and the first ratchet component 80, by the first ratchet component 80, in axial direction D2 is inclined towards the second ratchet component 82 It sets.In this embodiment, for example, biasing member 84 is compressed spring.
As shown in figure 44, biasing member 84 be compressed on D2 in the axial direction flower-drum ontology 36 and the first ratchet component 80 it Between.Biasing member 84 biases the first ratchet component 80 towards the second ratchet component 82, to maintain the first ratchet component 80 and the The engagement state that two ratchet components 82 are engaged with each other via the first hook tooth 80A and the second hook tooth 82A.
Preferably, biasing member 84 is engaged with flower-drum ontology 36, to rotate together with flower-drum ontology 36.Biasing member 84 is pacified It is attached to flower-drum ontology 36, to rotate (Figure 40) around center of rotation axis A1 together with flower-drum ontology 36.Biasing member 84 includes Coil ontology 84A and connection end 84B.Flower-drum ontology 36 includes connecting hole 36F.End 84B is connected to be arranged in connecting hole 36F In, so that biasing member 84 is rotated around center of rotation axis A1 (Figure 40) together with flower-drum ontology 36.
As shown in figure 44, the peripheral surface 28P of sprocket wheel support ontology 28 supports the first ratchet component 80 and the second ratchet structure Part 82.First ratchet component 80 includes towards axial direction D2 towards axial surface 80S.At least one first hook tooth 80A Be arranged in the first ratchet component 80 towards on axial surface 80S.In this embodiment, multiple first hook tooth 80A settings exist First ratchet component 80 towards on axial surface 80S.Axial direction D2 is basically perpendicular to towards axial surface 80S.However, face Surface 80S can be not orthogonal to axial direction D2 in the axial direction.
Second ratchet component 82 includes towards axial direction D2 towards axial surface 82S.At least one second hook tooth 82A be arranged in the second ratchet component 82 towards on axial surface 82S.Second ratchet component 82 towards the face axial surface 82S To the first ratchet component 80 towards axial surface 80S.In this embodiment, multiple second hook tooth 82A are arranged in the second spine Take turns component 82 towards on axial surface 82S.Axial direction D2 is basically perpendicular to towards axial surface 82S.However, towards axial direction Surface 82S can be not orthogonal to axial direction D2.
As shown in figure 40, bicycle rear-hub component 12 includes spacer 86, supporting member 88, and sliding component 90 adds Biasing member 92 and receiving member 94.However, spacer 86, supporting member 88, sliding component 90, additional bias component 92 and connecing Receiving at least one of component 94 can omit from bicycle rear-hub component 12.
As shown in figures 44 and 45, spacer 86 is in at least portion on the circumferential direction D1 that center of rotation axis A1 is limited Ground is divided to be arranged between at least one the first tooth 36T and at least one protrusion 82T.In this embodiment, spacer 86 is in circumferential direction It is partially disposed on the D1 of direction between the first tooth 36T and protrusion 82T.However, spacer 86 can be complete on circumferential direction D1 Portion is arranged between the first tooth 36T and protrusion 82T.
As shown in Figure 45 to Figure 47, spacer 86 includes being arranged at least one first tooth 36T and at least one protrusion 82T Between at least one middle section 86A.At least one middle section 86A be arranged on circumferential direction D1 at least one first Between tooth 36T and at least one protrusion 82T.In this embodiment, spacer 86 includes being separately positioned on circumferential direction D1 Multiple middle section 86A between first tooth 36T and protrusion 82T.Although spacer 86 includes multiple centres in this embodiment Part 86A, but spacer 86 may include a middle section 86A.
As shown in Figure 46 and Figure 47, spacer 86 includes coupling part 86B.Multiple middle section 86A are from coupling part 86B Extend along the axial direction D2 for being parallel to center of rotation axis A1.Although spacer 86 includes coupling part in this embodiment 86B, but spacer 86 can be omitted interconnecting piece 86B.
Spacer 86 includes nonmetallic materials.In this embodiment, nonmetallic materials include resin material.Resin material Example includes synthetic resin.It substitutes resin material or in addition to resin material, nonmetallic materials may include other than resin material Material.Although in this embodiment, middle section 86A and coupling part 86B is set as single-piece entirety structure integrally with each other Part, but at least one of middle section 86A can be the part separated with coupling part 86B.
As shown in figures 44 and 45, the interior weekly form of flower-drum ontology 36 is arranged in multiple middle section 86A in radial directions Between face 36S and the peripheral surface 82P of the second ratchet component 82.
As shown in figure 44, supporting member 88 in the axial direction on D2 setting flower-drum ontology 36 and the second ratchet component 82 it Between.Supporting member 88 is attached to the second ratchet component 82.The radial outside of the first ratchet component 80 is arranged in supporting member 88.Branch It supports component 88 and the first ratchet component 80 is accessible.Supporting member 88 preferably includes nonmetallic materials.By nonmetallic materials system At supporting member 88 reduce bicycle rear-hub component 12 operate during noise.In this embodiment, nonmetallic materials Including resin material.It substitutes resin material or in addition to resin material, nonmetallic materials may include the material other than resin material Material.
Sliding component 90 is arranged on the axial direction D2 for be parallel to center of rotation axis A1 supports 28 He of ontology in sprocket wheel Between second ratchet component 82.Second ratchet component 82 is arranged in the first ratchet component 80 and sliding component on D2 in the axial direction Between 90.Sliding component 90 preferably includes nonmetallic materials.The sliding component 90 made of nonmetallic materials reduces voluntarily Noise during the operation of vehicle rear drum component 12.In this embodiment, nonmetallic materials include resin material.Substitute resin material Or in addition to resin material, nonmetallic materials may include the material other than resin material.
It includes adjacency section 28E with adjacent second ratchet component 82 that sprocket wheel, which supports ontology 28, thus the second ratchet component of limitation 82 axial movements far from flower-drum ontology 36.In this embodiment, adjacency section 28E can be abutted indirectly via sliding component 90 Second ratchet component 82.Alternatively, adjacency section 28E can directly abut the second ratchet component 82.First ratchet component 80 Axial side opposite with the sprocket wheel support adjacency section 28E of ontology 28 on the D2 in the axial direction of second ratchet component 82 is set On.Sliding component 90 be arranged on D2 in the axial direction sprocket wheel support ontology 28 adjacency section 28E and the second ratchet component 82 it Between.
As shown in figure 44, additional bias component 92 is arranged in flower-drum ontology 36 and the second ratchet component on D2 in the axial direction Between 82, the second ratchet component 82 is biased towards sprocket wheel support ontology 28.In this embodiment, additional bias component 92 passes through By supporting member 88, in axial direction D2 biases the second ratchet component 82.The diameter of biasing member 84 is arranged in additional bias component 92 Outward.In this embodiment, the radial outside of multiple second hook tooth 82A is arranged in additional bias component 92.
Receiving member 94 includes nonmetallic materials.The receiving member 94 made of nonmetallic materials prevents biasing member 84 from existing It is excessively reversed during the operation of bicycle rear-hub component 12.In this embodiment, nonmetallic materials include resin material.Substitution Resin material or in addition to resin material, nonmetallic materials may include the material other than resin material.Receiving member 94 includes Axially receive portion 96 and radial receiving unit 98.Axially receive portion 96 in the axial direction on D2 setting the first ratchet component 80 with partially It sets between component 84.From the portion that axially receives 96, in axial direction D2 extends radial receiving unit 98.Radial receiving unit 98 is arranged inclined Set the radially inner side of component 84.It axially receives portion 96 and radial receiving unit 98 is set as single one-piece integral member integrally with each other. However, axially receiving portion 96 can be the component separated with radial receiving unit 98.
As shown in figure 44, bicycle rear-hub component 12 includes sealing structure 100.Sealing structure 100 is arranged in sprocket wheel branch It supports between ontology 28 and flower-drum ontology 36.Flower-drum ontology 36 includes inner space 102.Sprocket wheel support ontology 28, biasing member 84, Each of first ratchet component 80 and the second ratchet component 82 are at least partially disposed on the inner space 102 of flower-drum ontology 36 In.Inner space 102 is sealed by sealing structure 100.In this embodiment, lubricant is not provided in inner space 102.So And bicycle rear-hub component 12 may include the lubricant being arranged in inner space 102.With bicycle rear-hub component 12 The case where may include the lubricant being arranged in inner space 102, is compared, if being not provided with lubricant, can reduce and sets Set each gap between the component in inner space 102.
Below with reference to the operation of Figure 44, Figure 48 and Figure 49 detailed description bicycle rear-hub component 12.
As shown in figure 44, axial direction D2 includes first axial direction D21 and opposite with first axial direction D21 second Axial direction D22.Bias force F5 is applied to receiving member 94 from biasing member 84 along first axial direction D21.Biasing member 84 Bias force F5 by receiving member 94, the first ratchet component 80, the second ratchet component 82 and sliding component 90 along first axis Direction D21 is biased towards sprocket wheel support ontology 28.This engages the first hook tooth 80A with the second hook tooth 82A.
In addition, as shown in figure 48, when scrunch torque T 1 along driving direction of rotation D11 be input to sprocket wheel support ontology 28 when, Helical form inner spline gear 80H1 is drawn relative to sprocket wheel support ontology 28 along first axial direction D21 by helical form external spline teeth 46 It leads.This is securely engaged the first hook tooth 80A with the second hook tooth 82A.In this state, the support of 1 accessary sprocket wheel of torque T is scrunched Ontology 28 is transmitted to flower-drum ontology 36 (Figure 44) via the first ratchet component 80 and the second ratchet component 82 (Figure 44).
As shown in figure 48, during sliding, 80 contact guidance part 28G of the first ratchet component with the second ratchet component 82 It is detached from, and generates rotating friction force F6 between biasing member 84 (Figure 44) and the first ratchet component 80.As shown in figure 49, in cunning Between the departure date, torque T 2 is slided along driving direction of rotation D11 and is applied to flower-drum ontology 36.Torque T 2 is slided from (the figure of flower-drum ontology 36 44) the first ratchet component 80 is transmitted to via the second ratchet component 82 (Figure 44).At this point, helical form inner spline gear 80H1 is by spiral Shape external spline teeth 46 guides on the second axial direction D22 relative to sprocket wheel support ontology 28.This makes the first ratchet component 80 It resists bias force F5 and is moved relative to sprocket wheel support ontology 28 along the second axial direction D22.Therefore, 80 edge of the first ratchet component Second axial direction D22 moves away from the second ratchet component 82, causes between the first hook tooth 80A and the second hook tooth 82A Engagement dies down.This allows the second ratchet component 82 to rotate relative to the first ratchet component 80 along driving direction of rotation D11, anti-on-slip Row torque T 2 is transmitted to sprocket wheel support ontology 28 via the first ratchet component 80 and the second ratchet component 82 from flower-drum ontology 36.This When, D1 is slided along circumferential direction by the first hook tooth 80A and the second hook tooth 82A.
Modification
As shown in figure 50, in above-described embodiment and other modifications, external spline teeth 40 may include on circumferential direction D1 Slot 40G between external splines driving surface 48 and the non-driven surface 50 of external splines is set.Slot 40G reduces bicycle rear-hub The weight of component 12.
As shown in figure 51, in above-described embodiment and other modifications, inner spline gear 64 may include on circumferential direction D1 Slot 64G between internal spline driving surface 66 and the non-driven surface 68 of internal spline is set.Slot 64G reduces bicycle rear sprocket The weight of component 14.
In this application, although in the above embodiments, at least ten inner spline gears are placed directly onto the second sprocket wheel SP3 It is open in each of SP4 second, but the second opening to the second sprocket wheel can be arranged at least ten inner spline gears indirectly. For example, instead of the second opening that at least ten inner spline gears are placed directly onto the second sprocket wheel SP3 and/or the second sprocket wheel SP4, it can Being attached at least one of second sprocket wheel SP3 and SP4 in the sprocket support member including at least ten inner spline gears.It can Alternatively, instead of at least ten inner spline gears to be placed directly onto the second opening of the second sprocket wheel, at least one second sprocket wheel can To be integrally formed as single one-piece integral member at least one the additional sprocket wheel for including at least ten inner spline gears.Due to such Second sprocket wheel includes at least ten inner spline gears via sprocket support member and/or additional sprocket wheel indirectly, so this same meaning Taste the second sprocket wheel include be configured to the sprocket wheel of bicycle rear-hub component support body engagement at least ten inner spline gears.
Although bicycle rear sprocket assembly 14 includes two first sprocket wheels SP1 and SP2 in the above-described embodiments, voluntarily Vehicle rear sprocket assembly 14 may include the first sprocket wheel of only one or more than two first sprocket wheel.
Although bicycle rear sprocket assembly 14 includes two second sprocket wheels SP3 and SP4 in the above-described embodiments, voluntarily Vehicle rear sprocket assembly 14 may include the second sprocket wheel of only one or more than two second sprocket wheel.
As shown in figure 52, in sprocket wheel support ontology 28, the sum of at least ten external spline teeths 40 may range from 22 To 24.For example, the sum of at least ten external spline teeths 40 can be 23.First outer angular pitch PA11's may range from 13 degree and arrives 17 degree.For example, the first outer angular pitch PA11 can be 15 degree.Second outer angular pitch PA12's may range from 28 degree to 32 degree. For example, the second outer angular pitch PA12 can be 30 degree.First outer angular pitch PA11 is the half of the second outer angular pitch PA12.So And the first outer angular pitch PA11 can be different from the half of the second outer angular pitch PA12.The sum of at least ten external spline teeths 40 It is not limited to above-mentioned modification and range.First outer angular pitch PA11 is not limited to above-mentioned modification and range.Second outer angular pitch PA12 is not It is limited to above-mentioned modification and range.
As shown in figure 53, in sprocket wheel support ontology 28, the radical length RL11's of multiple external splines driving surfaces 48 is total Sum may range from 11mm to 14mm.The summation of the radical length RL11 of multiple external splines driving surfaces 48 can be 12.5mm.The summation of additional radical length RL12 may range from 26mm to 30mm.For example, additional radical length RL12's is total With can be 28.2mm.However, the summation of additional radical length RL12 is not limited to above-mentioned modification and range.
As shown in figure 54, in the first torque transfer arrangement SP1T of the first sprocket wheel SP1, the transmitting of at least ten first torques The sum of tooth SP1T1 may range from 22 to 24.For example, the sum of at least ten first torques transmitting tooth SP1T1 can be 23.However, the sum of at least ten first torques transmitting tooth SP1T1 is not limited to above-mentioned modification and range.
As shown in figure 55, in the second torque transfer arrangement SP2T of the first sprocket wheel SP2, the transmitting of at least ten second torques The sum of tooth SP2T1 may range from 22 to 24.For example, the sum of at least ten second torques transmitting tooth SP2T1 can be 23.However, the sum of at least ten second torques transmitting tooth SP2T1 is not limited to above-mentioned modification and range.
As shown in figure 56, in the first sprocket wheel SP2, the model of the sum of at least ten inner spline gears 63 of the first sprocket wheel SP2 Enclose to be 22 to 24.For example, the sum of at least ten inner spline gears 63 of the first sprocket wheel SP2 can be 23.However, at least ten The sum of a inner spline gear 63 is not limited to above-mentioned modification and range.
As shown in figure 57, in the second sprocket wheel SP3, the model of the sum of at least ten inner spline gears 64 of the second sprocket wheel SP3 Enclose to be 22 to 24.For example, the sum of at least ten inner spline gears 64 of the second sprocket wheel SP3 can be 23.However, at least ten The sum of a inner spline gear 64 is not limited to above-mentioned modification and range.
As shown in figure 58, in the second sprocket wheel SP4, the model of the sum of at least ten inner spline gears 65 of the second sprocket wheel SP4 Enclose to be 22 to 24.For example, the sum of at least ten inner spline gears 65 of the second sprocket wheel SP4 can be 23.However, at least ten The sum of a inner spline gear 65 is not limited to above-mentioned modification and range.
As shown in figure 59, at least ten inner spline gears 64 of the second sprocket wheel SP3, the range of angular pitch PA21 in first It can be 13 degree to 17 degree.For example, angular pitch PA21 can be 15 degree in first.Angular pitch PA22's may range from second 28 degree to 32 degree.For example, angular pitch PA22 can be 30 degree in second.Angular pitch PA21 can be angular pitch in second in first The half of PA22.However, angular pitch PA21 can be different from the half of angular pitch PA22 in second in first.Angular pitch in first PA21 is not limited to above-mentioned modification and range.Angular pitch PA22 is not limited to above-mentioned modification and range in second.
As shown in figure 60, in the inner spline gear 64 of the second sprocket wheel SP3, the radical length of multiple internal spline driving surfaces 66 The summation of RL21 may range from 11mm to 14mm.For example, the radical length RL21's of multiple internal spline driving surfaces 66 is total With can be 12.5mm.However, the summation of radical length RL21 is not limited to above-mentioned modification and range.Additional radical length RL22's Summation may range from 26mm to 29mm.For example, the summation of additional radical length RL22 is 27.6mm.However, additional radial The summation of length RL22 is not limited to the embodiment and above range.The inner spline gear 63 of first sprocket wheel SP2 and the second sprocket wheel SP4's Inner spline gear 65 has structure identical with the structure of inner spline gear 64 of the second sprocket wheel SP3.
As shown in Figure 61, the inner spline gear 76 of sprocket support member 37 can have illustrates with Figure 57, Figure 59 and Figure 60 The second sprocket wheel SP3 inner spline gear 64 the identical structure of structure.At least ten inner spline gears 76 of sprocket support member 37 Sum may range from 22 to 24.For example, the sum of at least ten inner spline gears 76 of sprocket support member 37 can be 23.However, the sum of at least ten inner spline gears 76 is not limited to above-mentioned modification and range.The inner spline gear 64 illustrated in Figure 60 Structure can be applied to the inner spline gear 76 of sprocket support member 37.
As shown in Figure 62, bicycle rear sprocket assembly 14 may include additional sprocket wheel SP13.Additional sprocket wheel SP13 passes through more A coupling member SP13R is connected to additional sprocket wheel SP12.Additional sprocket wheel SP13 includes sprocket body SP13A and at least one sprocket wheel Tooth SP13B.The sprocket body SP13A of additional sprocket wheel SP13 is connected to additional sprocket wheel SP12's by multiple coupling member SP13R Sprocket body SP12A.At least one sprocket SP13B accessary sprocket wheel ontology SP13A extends radially outwardly.At least one sprocket The sum of SP13B is greater than the sum of at least one sprocket SP12B.Preferably, total number of teeth etc. of at least one sprocket SP13B In or greater than 46.It is highly preferred that total number of teeth of at least one sprocket SP13B is equal to or more than 50.For example, at least one sprocket wheel Total number of teeth of tooth SP13B is 54.
The gear tooth profile of the sprocket SP1B to SP13B of sprocket wheel SP1 to SP13 can have conventional gear tooth profile and/or narrow- Wide gear is wide.Specifically, wide for narrow-wide gear, the sprocket SP1B to SP13B of sprocket wheel SP1 to SP13 can also include extremely Few first tooth and at least one second tooth, at least one first tooth all have first axis maximum chain engaged width, until Few second tooth all has the second axial maximum chain engaged width less than first axis maximum chain engaged width.First In axial direction D2 is measured for axial maximum chain engaged width and the second axial maximum chain engaged width.First axis maximum chain Engaged width is greater than the inside chain distance of the axis limited by a pair of of inner plate of bicycle chain 20 and less than by bicycle chain The axial exterior chain distance that a pair of of outer plate of item 20 limits, wherein one as bicycle chain 20 and sprocket wheel SP1 into SP13 When engagement, this is to facing each other on outer plate in the axial direction D2.Second axial maximum chain engaged width is less than by bicycle The inside chain distance of axis that a pair of of inner plate of chain 20 limits.Therefore, at least one first tooth is configured to and bicycle chain 20 The engagement of a pair of of outer plate, wherein this exists to outer plate when engaging as one into SP13 of bicycle chain 20 and sprocket wheel SP1 Facing each other on axial direction D2, and at least one second tooth is configured to engage with a pair of of inner plate of bicycle chain 20, Wherein this is to facing each other on inner plate in the axial direction D2.Preferably, at least one first tooth and at least one second tooth are handed over Sprocket wheel SP1 is alternately set into SP13 on the periphery of at least one.Preferably, the sprocket SP1B of sprocket wheel SP1 to SP13 is extremely SP13B includes multiple first teeth and multiple second teeth, and multiple first teeth all have above-mentioned first axis maximum chain engaged width, Multiple second teeth all have the above-mentioned second axial maximum chain engaged width.Preferably, multiple first teeth and multiple second teeth are handed over Alternately it is arranged on the periphery of sprocket wheel SP1 at least one of SP13.Preferably, the sprocket of maximum sprocket wheel can have this Narrow-wide gear of sample is wide.It is preferred, therefore, that the sprocket wheel SP13 in the sprocket SP12B or Figure 62 of the sprocket wheel SP12 in Fig. 6 Sprocket SP13B include at least one first tooth and at least one second tooth, at least one first tooth all has above-mentioned first Axial maximum chain engaged width, at least one second tooth all have the above-mentioned second axial maximum chain engaged width.
As used herein term " includes " and its derivative are intended to open-ended term, indicate the feature, The presence of component, assembly unit, group, entirety and/or step, but it is not excluded for feature, component, assembly unit, group that other do not state, whole The presence of body and/or step.This conception of species is also applied for the vocabulary of similar meaning, for example, term " having ", "comprising" and its group New word.
Term " component ", " section ", " portion ", " part ", " element ", " ontology " and " structure " can have when being used as odd number There is the double meaning of single part or multiple portions.
Such as ordinal number of " first " and " second " enumerated in the application is only mark, but does not have other meanings, for example, Particular order etc..In addition, for example, term " first element " does not imply that the presence of " second element ", and term " second in itself Element " does not imply that the presence of " first element " in itself.
Other than a pair of of element has the construction of mutually the same shape or structure, the term as used herein " a pair " can To include construction of a pair of of element with shape different from each other or structure.
Term "one", " one or more " and "at least one" may be used interchangeably herein.
Finally, it is as used herein such as " substantially ", the degree term of " about " and " close " mean modified art The reasonable departure of language, so that final result will not significantly change.All numerical value described in this application can be interpreted Including such as " substantially ", the term of " about " and " close ".
It is apparent that according to the above instruction, many variations and modifications can be made to the present invention.It is therefore to be understood that Within the scope of the appended claims, the present invention is implemented other than can specifically describing herein.

Claims (58)

1. a kind of bicycle rear sprocket assembly, be configured for mount to the sprocket wheel support ontology of bicycle rear-hub component, it is described from Driving rear sprocket assembly include:
Multiple bicycle chainwheels, the multiple bicycle chainwheel include:
First sprocket wheel, first sprocket wheel include:
First opening, first opening have the first minimum diameter, and first minimum diameter is less than flower after the bicycle The minimum outer diameter of the sprocket wheel support ontology of drum component；With
Second sprocket wheel, second sprocket wheel include:
Second opening, second opening have the second minimum diameter, second minimum diameter be equal to or more than it is described voluntarily The minimum outer diameter of the sprocket wheel support ontology of vehicle rear drum component；With
At least ten inner spline gears, at least ten inner spline gear are configured to the chain with the bicycle rear-hub component Wheel support body engagement.
2. bicycle rear sprocket assembly according to claim 1, further includes
Locking component, the locking component include:
Tubular body, in the state that the bicycle rear sprocket assembly is installed to the bicycle rear-hub component, the pipe Shape ontology extends through first opening of first sprocket wheel, and the tubular body includes:
First axis end；With
Second axial end portion, axis of second axial end portion in the center of rotation axis about the bicycle rear sprocket assembly To on direction with the first axis end on the contrary, being installed to the bicycle rear-hub group in the bicycle rear sprocket assembly In the state of part, the first axis end is positioned to than second axial end portion closer to the bicycle rear-hub component Axial centre plane；
Male screw portion, the male screw portion are arranged to the first axis end, in the bicycle rear sprocket assembly It is installed in the state of the bicycle rear-hub component, with the sprocket wheel support ontology of the bicycle rear-hub component Female portion engagement；With
Radial projection, the radial projection are radially outward prolonged relative to the center of rotation axis from second axial end portion It stretches, to limit first chain in the state that bicycle rear sprocket assembly is installed to the bicycle rear-hub component Take turns the axial movement of the sprocket wheel support ontology relative to the bicycle rear-hub component.
3. bicycle rear sprocket assembly according to claim 2, wherein
First sprocket wheel includes:
First is facing inwardly toward side；With
First outwardly facing side, first outwardly facing side are facing inwardly toward side phase with described first on the axial direction Instead, and
The radial projection is configured to abut against first sprocket wheel in first outwardly facing side.
4. bicycle rear sprocket assembly according to claim 1, wherein
Second sprocket wheel is on the axial direction of the center of rotation axis about the bicycle rear sprocket assembly with described One sprocket wheel is adjacent, and does not have other sprocket wheel between first sprocket wheel and second sprocket wheel.
5. bicycle rear sprocket assembly according to claim 1, wherein
First sprocket wheel includes:
First is facing inwardly toward side；With
First outwardly facing side, first outwardly facing side is in the center of rotation axis about the bicycle rear sprocket assembly Axial direction on described first be facing inwardly toward side on the contrary, and
First sprocket wheel includes the first torque transfer arrangement, and first torque transfer arrangement setting to described first is to inner face To side, torque will be scrunched and be directly or indirectly transmitted to the sprocket wheel support ontology.
6. bicycle rear sprocket assembly according to claim 5, wherein
First torque transfer arrangement includes that at least ten first torques transmit tooth.
7. bicycle rear sprocket assembly according to claim 6, wherein
The sum of at least ten first torques transmitting tooth is equal to or more than 20.
8. bicycle rear sprocket assembly according to claim 1, wherein
The sum of at least ten inner spline gear of second sprocket wheel is equal to or more than 20.
9. bicycle rear sprocket assembly according to claim 8, wherein
The sum of at least ten inner spline gear of second sprocket wheel is equal to or more than 28.
10. bicycle rear sprocket assembly according to claim 1, wherein
At least ten inner spline gear of second sprocket wheel have first in angular pitch and with described first in angular pitch not Angular pitch in same second.
11. bicycle rear sprocket assembly according to claim 1, wherein
At least one of described at least ten inner spline gear of second sprocket wheel has the first spline-shaped, first flower Key-shaped shape is different from another the second spline-shaped at least ten inner spline gear.
12. bicycle rear sprocket assembly according to claim 1, wherein
At least one of described at least ten inner spline gear of second sprocket wheel has the first spline size, first flower Key size is different from another the second spline size at least ten inner spline gear.
13. bicycle rear sprocket assembly according to claim 1, wherein
Total number of teeth of first sprocket wheel is equal to or less than 10.
14. bicycle rear sprocket assembly according to claim 1, wherein
First sprocket wheel is the minimum sprocket wheel in the bicycle rear sprocket assembly.
15. bicycle rear sprocket assembly according to claim 1, further includes
Sprocket support member, the sprocket support member include the sprocket wheel branch being configured to the bicycle rear-hub component Support at least ten inner spline gears of body engagement, wherein
The multiple bicycle chainwheel includes the additional sprocket wheel for being configured and attached to the sprocket support member.
16. bicycle rear sprocket assembly according to claim 15, wherein
Total number of teeth of the additional sprocket wheel is equal to or more than 46.
17. bicycle rear sprocket assembly according to claim 15, wherein
Total number of teeth of the additional sprocket wheel is equal to or more than 50.
18. bicycle rear sprocket assembly according to claim 1, wherein
The multiple bicycle chainwheel includes multiple second sprocket wheels for being set as second sprocket wheel, and
The multiple second sprocket wheel includes being configured to support body engagement with the sprocket wheel of the bicycle rear-hub component At least ten inner spline gear.
19. bicycle rear sprocket assembly according to claim 18, further includes
Sprocket support member, the sprocket support member include the sprocket wheel branch being configured to the bicycle rear-hub component At least ten inner spline gears of body engagement are supportted, wherein
The multiple bicycle chainwheel includes the additional sprocket wheel for being configured and attached to the sprocket support member.
20. bicycle rear sprocket assembly according to claim 1, wherein
The sum of the multiple bicycle chainwheel is equal to or more than 10.
21. bicycle rear sprocket assembly according to claim 1, wherein
The sum of the multiple bicycle chainwheel is equal to or more than 11.
22. bicycle rear sprocket assembly according to claim 1, wherein
The sum of the multiple bicycle chainwheel is equal to or more than 12.
23. bicycle rear sprocket assembly according to claim 1, wherein
The multiple bicycle chainwheel includes the additional sprocket wheel with maximum tooth tip diameter,
At least ten inner spline gears of second sprocket wheel have internal spline bottom diameter, and
The range of the ratio of internal spline bottom diameter and the maximum tooth tip diameter is 0.15 to 0.18.
24. bicycle rear sprocket assembly according to claim 1, wherein
The multiple bicycle chainwheel includes additional sprocket wheel, and the additional sprocket wheel includes:
At least one first gear shift promotes region, to promote bicycle chain from the additional sprocket shift to adjacent relatively chainlet First gear-change operation of wheel；With
At least one second gear shift promotes region, to promote the bicycle chain to be shifted to institute from the adjacent relatively minor sprocket State the second gear-change operation of additional sprocket wheel.
25. bicycle rear sprocket assembly according to claim 3, wherein
The tubular body has the first external diameter equal to or less than 27mm.
26. bicycle rear sprocket assembly according to claim 25, wherein
The first external diameter is equal to or more than 26mm.
27. bicycle rear sprocket assembly according to claim 3, wherein
The radial projection has the second external diameter equal to or less than 32mm.
28. bicycle rear sprocket assembly according to claim 27, wherein
The second external diameter is equal to or more than 30mm.
29. bicycle rear sprocket assembly according to claim 3, wherein
The locking component has tool engaging portion.
30. bicycle rear sprocket assembly according to claim 1, wherein
The multiple bicycle chainwheel includes:
Multiple first sprocket wheels of first sprocket wheel are set as, the multiple first sprocket wheel includes first opening；With
Multiple second sprocket wheels of second sprocket wheel are set as, the multiple second sprocket wheel includes second opening and construction At at least ten inner spline gear with the sprocket wheel of bicycle rear-hub component support body engagement.
31. bicycle rear sprocket assembly according to claim 15, wherein
The additional sprocket wheel is attached to the sprocket support member by adhesive.
32. bicycle rear sprocket assembly according to claim 15, wherein
The sprocket support member is by including that the nonmetallic materials of resin material are made.
33. bicycle rear sprocket assembly according to claim 1, wherein
After at least two inner spline gears at least ten inner spline gear of second sprocket wheel are relative to the bicycle The center of rotation axis of chain wheel assembly with angular pitch in first circumferentially, and
The range of angular pitch is 5 degree to 36 degree in described first.
34. bicycle rear sprocket assembly according to claim 33, wherein
The range of angular pitch is 10 degree to 20 degree in described first.
35. bicycle rear-hub component according to claim 34, wherein
Angular pitch is equal to or less than 15 degree in described first.
36. bicycle rear sprocket assembly according to claim 33, wherein
At least other two inner spline gear at least ten inner spline gear of second sprocket wheel is relative to the rotation Central axis with angular pitch in second circumferentially, and
Angular pitch is different from angular pitch in described first in described second.
37. bicycle rear sprocket assembly according to claim 1, wherein
At least ten inner spline gear of second sprocket wheel has the internal spline bottom diameter equal to or less than 34mm.
38. the bicycle rear sprocket assembly according to claim 37, wherein
The internal spline bottom diameter of second sprocket wheel is equal to or less than 33mm.
39. the bicycle rear sprocket assembly according to claim 37, wherein
The internal spline bottom diameter of second sprocket wheel is equal to or more than 29mm.
40. bicycle rear sprocket assembly according to claim 1, wherein
At least ten inner spline gear of second sprocket wheel has the internal spline top diameter equal to or less than 32mm.
41. bicycle rear sprocket assembly according to claim 40, wherein
Internal spline top diameter is equal to or less than 31mm.
42. bicycle rear sprocket assembly according to claim 40, wherein
Internal spline top diameter is equal to or more than 28mm.
43. bicycle rear sprocket assembly according to claim 1, wherein
At least ten inner spline gear includes multiple internal spline driving surfaces, to receive during scrunching from the bicycle The driving rotary force of rear drum component,
The multiple internal spline driving surface includes:
Radially outermost edge,
Radially inner most edge, and
Radical length, the radical length are limited to from the radially outermost edge to the radially inner most edge, and
The summation of the radical length of the multiple internal spline driving surface is equal to or more than 7mm.
44. bicycle rear sprocket assembly according to claim 43, wherein
The summation of the radical length is equal to or more than 10mm.
45. bicycle rear sprocket assembly according to claim 43, wherein
The summation of the radical length is equal to or more than 15mm.
46. bicycle rear sprocket assembly according to claim 43, wherein
The summation of the radical length is equal to or less than 36mm.
47. bicycle rear sprocket assembly according to claim 1, wherein
At least one of described at least ten inner spline gear includes:
Internal spline driving surface, the internal spline driving surface, which has, is limited to the internal spline driving surface and the first radial line Between the first internal spline surface angle, first radial line from the center of rotation axis of the bicycle rear sprocket assembly extend To the radially outermost edge of the internal spline driving surface, and
The range of the first internal spline surface angle is 0 degree to 6 degree.
48. bicycle rear sprocket assembly according to claim 47, wherein
In at least ten inner spline gear it is described at least one include:
The non-driven surface of internal spline, the non-driven surface of internal spline, which has, is limited to the non-driven surface of the internal spline and second The second internal spline surface angle between radial line, Pivot axle of second radial line from the bicycle rear sprocket assembly Line extends to the radially outermost edge on the non-driven surface of the internal spline, and
The range of the second internal spline surface angle is 0 degree to 6 degree.
49. bicycle rear-hub component according to claim 1, wherein
At least one of at least ten inner spline gear of second sprocket wheel is circumferentially symmetrical relative to reference line, the ginseng It examines line and extends to flower in described at least ten along the radial direction about the center of rotation axis from the center of rotation axis In key teeth it is described at least one radially end circumferential central point.
50. a kind of bicycle drivetrain, comprising:
Bicycle rear sprocket assembly according to claim 1；With
Bicycle rear-hub component, the bicycle rear-hub component include:
Flower drum shaft, the flower drum shaft include shaft through-hole, and the shaft through-hole has the minimum diameter equal to or more than 13mm；
Flower-drum ontology, the flower-drum ontology are rotatably installed in around the center of rotation axis of the bicycle rear-hub component In the flower drum shaft；With
Sprocket wheel supports ontology, and the sprocket wheel support ontology is rotatably installed in the flower drum shaft around the center of rotation axis On.
51. bicycle drivetrain according to claim 50, wherein
The minimum diameter of the shaft through-hole is equal to or more than 14mm.
52. bicycle drivetrain according to claim 50, wherein
The minimum diameter of the shaft through-hole is equal to or less than 21mm.
53. bicycle rear sprocket assembly according to claim 6, wherein
The range of the sum of at least ten first torques transmitting tooth is 22 to 24.
54. bicycle rear sprocket assembly according to claim 1, wherein
The range of the sum of at least ten inner spline gear of second sprocket wheel is 22 to 24.
55. bicycle rear sprocket assembly according to claim 33, wherein
The range of angular pitch is 13 degree to 17 degree in described first.
56. bicycle rear sprocket assembly according to claim 36, wherein
The range of angular pitch is 28 degree to 32 degree in described second.
57. bicycle rear sprocket assembly according to claim 36, wherein
Angular pitch is the half of angular pitch in described second in described first.
58. bicycle rear sprocket assembly according to claim 43, wherein
The range of the summation of the radical length of the multiple internal spline driving surface is 11mm to 14mm.
CN201810466606.2A 2017-05-30 2018-05-11 Bicycle rear sprocket assembly and bicycle drive train Active CN108974239B (en)

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Applications Claiming Priority (18)

Application Number Priority Date Filing Date Title
US15/608,915 2017-05-30
US15/608,924 US11332213B2 (en) 2017-05-30 2017-05-30 Bicycle rear sprocket assembly and bicycle drive train
US15/608,924 2017-05-30
US15/608,915 US11059541B2 (en) 2017-05-30 2017-05-30 Bicycle hub assembly
US15/673,346 2017-08-09
US15/673,346 US10377174B2 (en) 2017-08-09 2017-08-09 Bicycle hub assembly
US15/686,177 2017-08-25
US15/686,179 US11220309B2 (en) 2017-05-30 2017-08-25 Bicycle rear sprocket assembly
US15/686,177 US11179967B2 (en) 2017-05-30 2017-08-25 Bicycle hub assembly
US15/686,179 2017-08-25
US201715712388A 2017-09-22 2017-09-22
US201715712407A 2017-09-22 2017-09-22
US15/712,407 2017-09-22
US15/712,388 2017-09-22
US15/851,781 US10946931B2 (en) 2017-09-22 2017-12-22 Bicycle rear sprocket assembly and bicycle drive train
US15/851,785 2017-12-22
US15/851,781 2017-12-22
US15/851,785 US10752320B2 (en) 2017-09-22 2017-12-22 Bicycle rear hub assembly

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CN201810466606.2A Active CN108974239B (en) 2017-05-30 2018-05-11 Bicycle rear sprocket assembly and bicycle drive train
CN201810466367.0A Active CN108973524B (en) 2017-05-30 2018-05-11 Bicycle rear hub assembly
CN202110824666.9A Active CN113581359B (en) 2017-05-30 2018-05-11 Bicycle rear sprocket assembly and sprocket support member therefor
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CN202110824666.9A Active CN113581359B (en) 2017-05-30 2018-05-11 Bicycle rear sprocket assembly and sprocket support member therefor
CN202111683711.XA Active CN114379280B (en) 2017-05-30 2018-05-11 Bicycle rear hub assembly

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CN115503867A (en) * 2019-01-24 2022-12-23 株式会社岛野 Bicycle sprocket assembly
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JP6670342B2 (en) 2020-03-18
CN113581359B (en) 2022-09-02

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