CN108973521A - Bicycle drive shaft component - Google Patents

Bicycle drive shaft component Download PDF

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Publication number
CN108973521A
CN108973521A CN201810446965.1A CN201810446965A CN108973521A CN 108973521 A CN108973521 A CN 108973521A CN 201810446965 A CN201810446965 A CN 201810446965A CN 108973521 A CN108973521 A CN 108973521A
Authority
CN
China
Prior art keywords
drive shaft
flower
bicycle drive
ontology
drum
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
CN201810446965.1A
Other languages
Chinese (zh)
Other versions
CN108973521B (en
Inventor
藤田宽司
腰山和喜
中西崇
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 US15/608,915 external-priority patent/US11059541B2/en
Priority claimed from US15/608,924 external-priority patent/US11332213B2/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
Application filed by Shimano Inc filed Critical Shimano Inc
Publication of CN108973521A publication Critical patent/CN108973521A/en
Application granted granted Critical
Publication of CN108973521B publication Critical patent/CN108973521B/en
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
    • B60B27/0015—Hubs for driven wheels
    • B60B27/0021—Hubs for driven wheels characterised by torque transmission means from drive axle
    • B60B27/0026—Hubs for driven wheels characterised by torque transmission means from drive axle of the radial type, e.g. splined key
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0047—Hubs characterised by functional integration of other elements
    • 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
    • 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
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/24—Freewheels or freewheel clutches specially adapted for cycles
    • F16D41/36—Freewheels or freewheel clutches specially adapted for cycles with clutching ring or disc axially shifted as a result of lost motion between actuating members

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

Abstract

Bicycle drive shaft component includes flower drum shaft, flower-drum ontology, sprocket wheel support ontology and flywheel structure.It includes at least ten external spline teeths for being configured to engage with bicycle rear sprocket assembly that sprocket wheel, which supports ontology,.Each of at least ten external spline teeths have external splines driving surface and the non-driven surface of external splines.Flywheel structure includes the first ratchet component and the second ratchet component.First ratchet component includes at least one first hook tooth.Second ratchet component includes at least one second hook tooth for being configured to engage in a manner of transmitting torque at least one the first hook tooth.

Description

Bicycle drive shaft component
Cross reference to related applications
The application is the U.S. Patent Application No. 15/608,915 part continuation application submitted on May 30th, 2017. Content of the application is incorporated herein by being cited in full text.
Technical field
The present invention relates to bicycle drive shaft components.
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 flower-drum component.
Summary of the invention
First scheme according to the present invention, bicycle drive shaft component include flower drum shaft, flower-drum ontology, sprocket wheel support ontology and Flywheel structure.The flower-drum ontology is rotatably installed in the flower around the center of rotation axis of the bicycle drive shaft component On drum axis.The sprocket wheel support ontology is rotatably installed in the flower drum shaft around the center of rotation axis.The chain Wheel support ontology includes at least ten external spline teeths for being configured to engage with bicycle rear sprocket assembly.Flower outside described at least ten Each of key teeth has external splines driving surface and the non-driven surface of external splines.The flywheel structure includes the first ratchet structure Part and the second ratchet component.First ratchet component includes at least one first hook tooth.Second ratchet component includes It is configured at least one second hook tooth engaged in a manner of transmitting torque at least one described first hook tooth.Described One ratchet component is configured to engage in a manner of transmitting torque with one in the flower-drum ontology and sprocket wheel support ontology. Second ratchet component be configured to the flower-drum ontology and the sprocket wheel support ontology in another to transmit torque Mode engages.At least one of first ratchet component and second ratchet component relative to the flower drum shaft about It is moved on the axial direction of the center of rotation axis.
Using the bicycle drive shaft component according to first scheme, supported with the sprocket wheel for including nine or less external spline teeths Ontology is compared, and at least ten external spline teeths reduce the rotary force for being applied to each of at least ten external spline teeths.This is mentioned The high durability of sprocket wheel support ontology, and/or mentioned in the case where not reducing the durability of at least one sprocket wheel support ontology The high freedom degree of the material selection of sprocket wheel support ontology.Furthermore, it is possible to further increase the driving effect of bicycle drive shaft component Rate and the weight for mitigating flywheel structure.
Alternative plan according to the present invention is configured so that described at least ten according to the bicycle drive shaft component of first scheme The sum of a external spline teeth is equal to or more than 20.
Using the bicycle drive shaft component according to alternative plan, the durability of sprocket wheel support ontology can be further improved, And/or in the case where not reducing the durability of sprocket wheel support ontology, the material selection of sprocket wheel support ontology is further improved Freedom degree.
Third program according to the present invention is configured so that described at least ten according to the bicycle drive shaft component of first scheme The sum of a external spline teeth is equal to or more than 25.
Using the bicycle drive shaft component according to third program, the durability of sprocket wheel support ontology can be further improved, And/or in the case where not reducing the durability of sprocket wheel support ontology, the material selection of sprocket wheel support ontology is further improved Freedom degree.
Fourth program according to the present invention, according to first either into third program case bicycle drive shaft component structure Cause so that at least ten external spline teeth have the first outer angular pitch (pitch angle) and with the described first outer angular pitch The outer angular pitch of different second.
It, can be easily by bicycle rear sprocket assembly with correct using the bicycle drive shaft component according to fourth program Circumferential position is attached to bicycle drive shaft component.
5th scheme according to the present invention is constructed according to the bicycle drive shaft component of either a program in first to fourth scheme It include the multiple external spline teeths for being configured to engage with bicycle rear sprocket assembly at making the sprocket wheel support ontology.It is the multiple At least two external spline teeths in external spline teeth relative to the bicycle drive shaft component center of rotation axis with the first external tooth Elongation is circumferentially.The range of the first outer angular pitch is 10 degree to 20 degree.
Using the bicycle drive shaft component according to the 5th scheme, the durability of sprocket wheel support ontology can be further improved, And/or in the case where not reducing the durability of sprocket wheel support ontology, the material selection of sprocket wheel support ontology is further improved Freedom degree.
6th scheme according to the present invention, is configured so that outside described first according to the bicycle drive shaft component of the 5th scheme The range of angular pitch is 12 degree to 15 degree.
Using the bicycle drive shaft component according to the 6th scheme, the durability of sprocket wheel support ontology can be further improved, And/or in the case where not reducing the durability of sprocket wheel support ontology, the material selection of sprocket wheel support ontology is further improved Freedom degree.
7th scheme according to the present invention, according to the bicycle drive shaft component structure of case either in the first to the 6th scheme Cause so that at least one described first hook tooth be arranged in first ratchet component towards on axial surface.It is described at least One the second hook tooth be arranged in second ratchet component towards on axial surface.Second ratchet component towards axis To surface towards first ratchet component towards axial surface.
Using the bicycle drive shaft component according to the 7th scheme, the driving effect of bicycle drive shaft component can be further improved Rate and the weight for mitigating flywheel structure.
Eighth aspect according to the present invention is constructed according to the bicycle drive shaft component of either a program in the first to the 7th scheme It include the peripheral surface with the first helical form spline at making the sprocket wheel support ontology.First ratchet component is configured to It is engaged in a manner of transmitting torque with sprocket wheel support ontology, and including second with the first helical form spline fitted Helical form spline.
Using the bicycle drive shaft component according to eighth aspect, in response between the first ratchet component and sprocket wheel support ontology Relative rotation, the first helical form spline and the second helical form spline keep the first ratchet component smooth relative to sprocket wheel support ontology Ground is mobile.This switches the state of flywheel structure smoothly between way of torque in transmitting way of torque and not transmitting.
9th scheme according to the present invention is configured so that according to the bicycle drive shaft component of eighth aspect by from institute The driving period for stating the first thrust that sprocket wheel support ontology applies, via the second helical form spline and first helical form The cooperation of spline, first ratchet component are movably pacified on the axial direction relative to sprocket wheel support ontology Dress.
Using the bicycle drive shaft component according to the 9th scheme, can by the state of flywheel structure in transmitting way of torque and It does not transmit between way of torque and more smoothly switches.
Tenth scheme according to the present invention, according to the bicycle drive shaft component structure of case either in the first to the 9th scheme It causes so that at least one described second hook tooth and at least one described first ratchet indented joint, by rotary force from the chain Wheel support ontology is transferred to the flower-drum ontology.
Using the bicycle drive shaft component according to the tenth scheme, the driving effect of bicycle drive shaft component can be further improved Rate and the weight for mitigating flywheel structure.
11st scheme according to the present invention, according to the bicycle drive shaft component of case either in the 8th or the 9th scheme Be configured so that sprocket wheel support ontology has leader, the leader is arranged in the peripheral surface, with First ratchet component is guided towards the flower-drum ontology during sliding.
Using the bicycle drive shaft component according to the 11st scheme, during sliding, leader reduces noise.
12nd scheme according to the present invention, is configured so that sliding according to the bicycle drive shaft component of the 11st scheme Leader described in period guides first ratchet component towards the flower-drum ontology, with discharge it is described at least one first Being engaged between hook tooth and at least one described second hook tooth.
Using the bicycle drive shaft component according to the 12nd scheme, during sliding, leader, which significantly reduces, makes an uproar Sound.
13rd scheme according to the present invention, is configured to make according to the bicycle drive shaft component of the 11st or the 12nd scheme The leader is obtained at least to extend along circumferential direction relative to sprocket wheel support ontology.
Using the bicycle drive shaft component according to the 13rd scheme, during sliding, leader, which significantly reduces, makes an uproar Sound.
14th scheme according to the present invention, according to the bicycle drive shaft of case either in the 11st to the 13rd scheme Component is configured so that the leader is arranged to limit obtuse angle relative to the first helical form spline.
Using the bicycle drive shaft component according to the 14th scheme, during sliding, leader, which significantly reduces, makes an uproar Sound.
15th scheme according to the present invention, according to the bicycle drive shaft component of either a program in the first to the 14th scheme It is configured so that second ratchet component includes flower-drum body engagement part, the flower-drum body engagement part and the flower-drum sheet Body is engaged in a manner of transmitting torque, and rotary force is passed from first ratchet component via flower-drum body engagement part It is delivered to the flower-drum ontology.
Using the bicycle drive shaft component according to the 15th scheme, the driving of bicycle drive shaft component can be further improved Efficiency and the weight for mitigating flywheel structure.
16th scheme according to the present invention is configured so that the flower according to the bicycle drive shaft component of the 15th scheme One in drum body engagement part and the flower-drum ontology includes at least one protrusion, at least one protrusion is relative to described The center of rotation axis of bicycle drive shaft component radially extends.It is another in flower-drum body engagement part and the flower-drum ontology One includes at least one recess portion engaged at least one described protrusion.
Using the bicycle drive shaft component according to the 16th scheme, the driving of bicycle drive shaft component can be further improved Efficiency and the weight for mitigating flywheel structure.
17th scheme according to the present invention, according to the bicycle drive shaft group of case either in the first to the 16th scheme Part further includes biasing member, and the biasing member is arranged between the flower-drum ontology and first ratchet component, by institute It states the first ratchet component and is biased along the axial direction towards second ratchet component.
Using the bicycle drive shaft component according to the 17th scheme, the driving of bicycle drive shaft component can be further improved Efficiency and the weight for mitigating flywheel structure.
18th scheme according to the present invention, according to the bicycle drive shaft of case either in the 11st to the 14th scheme Component further includes biasing member, and the biasing member is arranged between the flower-drum ontology and first ratchet component, will First ratchet component is biased along the axial direction towards second ratchet component.Second ratchet component with it is described Flower-drum ontology is engaged in a manner of transmitting torque.The biasing member and the flower-drum body engagement, with the flower-drum ontology It rotates together.During sliding, first ratchet component contacts the leader to be detached from second ratchet component, And rotating friction force is generated between the biasing member and first ratchet component.
Using the bicycle drive shaft component according to the 18th scheme, during sliding, leader, which significantly reduces, makes an uproar Sound.
19th scheme according to the present invention, according to the bicycle drive shaft group of case either in the first to the 18th scheme Part is configured so that at least one described first hook tooth includes multiple first hook tooths.At least one described second hook tooth packet Include multiple second hook tooths.
Using the bicycle drive shaft component according to the 19th scheme, the driving of bicycle drive shaft component can be further improved Efficiency and the weight for mitigating flywheel structure.
20th scheme according to the present invention, according to the bicycle drive shaft group of case either in the first to the 19th scheme Part is configured so that each of first ratchet component and second ratchet component are with annular shape.
Using the bicycle drive shaft component according to the 20th scheme, the driving of bicycle drive shaft component can be further improved Efficiency and the weight for mitigating flywheel structure.
21st scheme according to the present invention, according to the bicycle drive shaft of case either in the first to the 20th scheme Component is configured so that the sprocket wheel support ontology includes interconnecting piece, with adjoining second ratchet component, thus described in limitation Axial movement of second ratchet component far from the flower-drum ontology.First ratchet component is arranged in second ratchet component On the axial direction and on the axial opposed axial side in the adjacency section of sprocket wheel support ontology.
Using the bicycle drive shaft component according to the 21st scheme, the drive of bicycle drive shaft component can be further improved Efficiency of movement and the weight for mitigating flywheel structure.
22nd scheme according to the present invention, the bicycle drive shaft component according to the 21st scheme further include biasing structure Part, the biasing member is arranged between the flower-drum ontology and first ratchet component, by first ratchet component It is biased along the axial direction towards second ratchet component.
Using the bicycle drive shaft component according to the 22nd scheme, the drive of bicycle drive shaft component can be further improved Efficiency of movement and the weight for mitigating flywheel structure.
23rd scheme according to the present invention is configured so that institute according to the bicycle drive shaft component of the 22nd scheme Stating flower-drum ontology includes inner space.The peripheral surface of sprocket wheel support ontology supports first ratchet component and described the Two ratchet components.In the sprocket wheel support ontology, the biasing member, first ratchet component and second ratchet component Each be at least partially disposed in the inner space of the flower-drum ontology.
Using the bicycle drive shaft component according to the 23rd scheme, the drive of bicycle drive shaft component can be further improved Efficiency of movement and the weight for mitigating flywheel structure.
24th scheme according to the present invention, according to the bicycle pattern of case either in the first to the 23rd scheme Drum component is configured so that the flower-drum ontology includes that the first spoke installation section, the second spoke installation section and first axis are long Degree.First spoke installation section has first axis most external.Second spoke installation section has the second axial direction most It is external.The first axis length is limited to the first axis of first spoke installation section on the axial direction Between described the second of most external and second spoke installation section is axially outermost.The first axis length is equal to or greatly In 55mm.
Using the bicycle drive shaft component according to the 24th scheme, first axis length is improved including bicycle drive shaft The intensity of the wheel of component.
25th scheme according to the present invention is configured so that institute according to the bicycle drive shaft component of the 24th scheme First axis length is stated equal to or more than 60mm.
Using the bicycle drive shaft component according to the 25th scheme, first axis length is further improved including voluntarily The intensity of the wheel of vehicle flower-drum component.
26th scheme according to the present invention is configured so that institute according to the bicycle drive shaft component of the 24th scheme First axis length is stated equal to or more than 65mm.
Using the bicycle drive shaft component according to the 26th scheme, first axis length is further improved including voluntarily The intensity of the wheel of vehicle flower-drum component.
27th scheme according to the present invention, voluntarily according to case either in the 24th to the 26th scheme Vehicle flower-drum component be configured so that the flower drum shaft include first axis vehicle frame abutment surface, the second axial vehicle frame abutment surface and Second axial length.The first axis vehicle frame abutment surface is configured to be installed to vehicle in the bicycle drive shaft component In the state of frame, first of the cycle frame is abutted against along the axial direction.Described second axial vehicle frame is adjacent Surface structure is abutted in the state that the bicycle drive shaft component is installed to the cycle frame along the axial direction Against second of the cycle frame.Second axial length is limited to the first axis on the axial direction Between vehicle frame abutment surface and the second axial vehicle frame abutment surface.Second axial length is equal to or more than 140mm.
Using the bicycle drive shaft component according to the 27th scheme, the second axial length makes bicycle drive shaft component can It is attached to various types of cycle frames and obtains the effect of first scheme.
28th scheme according to the present invention, voluntarily according to case either in the 24th to the 26th scheme Vehicle flower-drum component be configured so that the flower drum shaft include first axis vehicle frame abutment surface, the second axial vehicle frame abutment surface and Second axial length.The first axis vehicle frame abutment surface is configured to be installed to vehicle in the bicycle drive shaft component In the state of frame, first of the cycle frame is abutted against along the axial direction.Described second axial vehicle frame is adjacent Surface structure is abutted in the state that the bicycle drive shaft component is installed to the cycle frame along the axial direction Against second of the cycle frame.Second axial length is limited to the first axis on the axial direction Between vehicle frame abutment surface and the second axial vehicle frame abutment surface.Second axial length is equal to or more than 145mm.
Using the bicycle drive shaft component according to the 28th scheme, it is long that the second axial length improves selection first axis The freedom degree of degree, and/or the wider range of bicycle rear sprocket assembly is realized, and first axis length is become It is long, so as to which more sprocket wheels are installed to bicycle drive shaft component.
29th scheme according to the present invention, voluntarily according to case either in the 24th to the 26th scheme Vehicle flower-drum component be configured so that the flower drum shaft include first axis vehicle frame abutment surface, the second axial vehicle frame abutment surface and Second axial length.The first axis vehicle frame abutment surface is configured to be installed to vehicle in the bicycle drive shaft component In the state of frame, first of the cycle frame is abutted against along the axial direction.Described second axial vehicle frame is adjacent Surface structure is abutted in the state that the bicycle drive shaft component is installed to the cycle frame along the axial direction Against second of the cycle frame.Second axial length is limited to the first axis on the axial direction Between vehicle frame abutment surface and the second axial vehicle frame abutment surface.Second axial length is equal to or more than 147mm.
Using the bicycle drive shaft component according to the 29th scheme, it is long that the second axial length improves selection first axis The freedom degree of degree, and/or the wider range of bicycle rear sprocket assembly is realized, and first axis length is become It is long, so as to which more sprocket wheels are installed to bicycle drive shaft component.
30th scheme according to the present invention, bicycle drive shaft component include flower drum shaft, flower-drum ontology, sprocket wheel support ontology And flywheel structure.The flower-drum ontology is rotatably installed in described around the center of rotation axis of the bicycle drive shaft component In flower drum shaft.The sprocket wheel support ontology is rotatably installed in the flower drum shaft around the center of rotation axis.It is described It includes at least one external spline teeth for being configured to engage with bicycle rear sprocket assembly that sprocket wheel, which supports ontology,.It is described outside at least one Spline tooth has the external splines top diameter equal to or less than 30mm.The flywheel structure includes the first ratchet component and the second ratchet structure Part.First ratchet component includes at least one first hook tooth.Second ratchet component include be configured to it is described extremely At least one second hook tooth that few first hook tooth is engaged in a manner of transmitting torque.The first ratchet component construction It is engaged in a manner of transmitting torque at one in the flower-drum ontology and sprocket wheel support ontology.The second ratchet structure Part is configured to engage in a manner of transmitting torque with another in the flower-drum ontology and sprocket wheel support ontology.Described At least one of one ratchet component and second ratchet component are relative to the flower drum shaft about the Pivot axle It is moved on the axial direction of line.
Using the bicycle drive shaft component according to the 30th scheme, external splines top diameter enables bicycle drive shaft component will Bicycle rear sprocket assembly including the sprocket wheel with ten or less sprockets is installed to bicycle drive shaft component.This widens It is installed to the gear bands of the bicycle rear sprocket assembly of bicycle drive shaft component.Furthermore, it is possible to further increase bicycle The drive efficiency of flower-drum component and the weight for mitigating flywheel structure.30th scheme can in the first to the 29th scheme Either case combination.
31st scheme according to the present invention, the bicycle drive shaft component according to the 30th scheme further includes brake rotors Ontology is supported, the brake rotors support ontology includes at least one the additional outer flower for being configured to engage with bicycle brake rotor Key teeth.At least one described additional external spline teeth has the additional external splines top diameter greater than external splines top diameter.
Using the bicycle drive shaft component according to the 31st scheme, brake rotors support ontology improves braking ability, And the gear bands for being installed to the bicycle rear sprocket assembly of bicycle drive shaft component are broadened, and obtain the 30th scheme Effect.Brake rotors support ontology also improves the attachment of bicycle brake rotor and releases attachment performance.
32nd scheme according to the present invention is constructed according to the bicycle drive shaft component of the 30th or the 31st scheme To make external splines top diameter be equal to or more than 25mm.
Utilize the bicycle drive shaft component according to the 32nd scheme, it can be ensured that sprocket wheel supports the intensity of ontology, and makes The bicycle rear sprocket assembly that bicycle drive shaft component can will include the sprocket wheel with ten or less sprockets is obtained to install To bicycle drive shaft component.
33rd scheme according to the present invention, is configured to according to the bicycle drive shaft component of the 30th or 31 schemes So that external splines top diameter is equal to or more than 29mm.
Utilize the bicycle drive shaft component according to the 33rd scheme, it can be ensured that sprocket wheel supports the intensity of ontology, and makes The bicycle rear sprocket assembly that bicycle drive shaft component can will include the sprocket wheel with ten or less sprockets is obtained to install To bicycle drive shaft component.
34th scheme according to the present invention, according to the bicycle of case either in the 30th to the 33rd scheme Flower-drum component is configured so that at least one described external spline teeth has external splines bottom diameter.External splines bottom diameter is equal to or less than 28mm。
Using the bicycle drive shaft component according to the 34th scheme, external splines bottom diameter can increase at least one external splines The radical length of the driving surface of tooth.This improves the intensity of sprocket wheel support ontology.
35th scheme according to the present invention is configured so that institute according to the bicycle drive shaft component of the 34th scheme External splines bottom diameter is stated equal to or more than 25mm.
Utilize the bicycle drive shaft component according to the 35th scheme, it can be ensured that sprocket wheel supports the intensity of ontology, and makes The bicycle rear sprocket assembly that bicycle drive shaft component can will include the sprocket wheel with ten or less sprockets is obtained to install To bicycle drive shaft component.
36th scheme according to the present invention is configured so that institute according to the bicycle drive shaft component of the 34th scheme External splines bottom diameter is stated equal to or more than 27mm.
Utilize the bicycle drive shaft component according to the 36th scheme, it can be ensured that sprocket wheel supports the intensity of ontology, and makes The bicycle rear sprocket assembly that bicycle drive shaft component can will include the sprocket wheel with ten or less sprockets is obtained to install To bicycle drive shaft component.
37th scheme according to the present invention, according to the bicycle of case either in the 30th to the 36th scheme Flower-drum component is configured so that at least one described external spline teeth includes multiple external spline teeths, and the multiple external spline teeth includes more A external splines driving surface, to receive the driving rotary force from the bicycle rear sprocket assembly during scrunching.It is described more A external splines driving surface includes radially outermost edge, radially inner most edge and radical length, and the radical length is limited to From the radially outermost edge to the radially inner most edge.The radical length of the multiple external splines driving surface it is total Be equal to or more than 7mm.
Using the bicycle drive shaft component according to the 37th scheme, the radial direction of multiple external splines driving surfaces can be increased Length.This improves the intensity of sprocket wheel support ontology.
38th scheme according to the present invention is configured so that institute according to the bicycle drive shaft component of the 37th scheme The summation for stating radical length is equal to or more than 10mm.
Using the bicycle drive shaft component according to the 38th scheme, multiple external splines driving surfaces can be further increased Radical length.Which further improves the intensity of sprocket wheel support ontology.
39th scheme according to the present invention is configured so that institute according to the bicycle drive shaft component of the 37th scheme The summation for stating radical length is equal to or more than 15mm.
Using the bicycle drive shaft component according to the 39th scheme, multiple external splines driving surfaces can be further increased Radical length.Which further improves the intensity of sprocket wheel support ontology.
40th scheme according to the present invention, according to the 30th scheme, case is voluntarily either into the 39th scheme Vehicle flower-drum component be configured so that at least one described first hook tooth be arranged in first ratchet component towards axial table On face.At least one described second hook tooth be arranged in second ratchet component towards on axial surface.Second spine Take turns component towards axial surface towards first ratchet component towards axial surface.
Using the bicycle drive shaft component according to the 40th scheme, the driving of bicycle drive shaft component can be further improved Efficiency and the weight for mitigating flywheel structure.
41st scheme according to the present invention, according to the 30th scheme, case is voluntarily either into the 40th scheme Vehicle flower-drum component is configured so that the sprocket wheel support ontology includes the peripheral surface with the first helical form spline.Described first Ratchet component be configured to the sprocket wheel support ontology engaged in a manner of transmitting torque, and including with first helical form Second helical form spline of spline fitted.
Using the bicycle drive shaft component according to the 41st scheme, ontology is supported in response to the first ratchet component and sprocket wheel Between relative rotation, the first helical form spline and the second helical form spline make the first ratchet component support ontology relative to sprocket wheel Smoothly move.This switches the state of flywheel structure smoothly between way of torque in transmitting way of torque and not transmitting.
42nd scheme according to the present invention, is configured so that according to the bicycle drive shaft component of the 41st scheme Driving period by the first thrust for supporting ontology to apply from the sprocket wheel, via the second helical form spline and described the The cooperation of one helical form spline, first ratchet component are removable relative to sprocket wheel support ontology on the axial direction It installs dynamicly.
It, can be by the state of flywheel structure in transmitting torque side using the bicycle drive shaft component according to the 42nd scheme Formula and not transmitting more smoothly switches between way of torque.
43rd scheme according to the present invention, according to the bicycle of case either in the 30th to the 42nd scheme Flower-drum component is configured so that at least one described second hook tooth and at least one described first ratchet indented joint, will rotate Power is transferred to the flower-drum ontology from sprocket wheel support ontology.
Using the bicycle drive shaft component according to the 43rd scheme, the drive of bicycle drive shaft component can be further improved Efficiency of movement and the weight for mitigating flywheel structure.
44th scheme according to the present invention, according to the bicycle drive shaft component structure of the 41st or the 43rd scheme It causes so that sprocket wheel support ontology has leader, the leader is arranged in the peripheral surface, in cunning First ratchet component is guided towards the flower-drum ontology between the departure date.
Using the bicycle drive shaft component according to the 44th scheme, during sliding, leader reduces noise.
45th scheme according to the present invention, is configured so that according to the bicycle drive shaft component of the 44th scheme During sliding, the leader guides first ratchet component towards the flower-drum ontology, to discharge described at least one Being engaged between a first hook tooth and at least one described second hook tooth.
Using the bicycle drive shaft component according to the 45th scheme, during sliding, leader is significantly reduced Noise.
46th scheme according to the present invention, according to the bicycle drive shaft component structure of the 44th or the 45th scheme It causes so that the leader at least extends along circumferential direction relative to sprocket wheel support ontology.
Using the bicycle drive shaft component according to the 46th scheme, during sliding, leader is significantly reduced Noise.
47th scheme according to the present invention, according to the 44th scheme either into the 46th scheme case Bicycle drive shaft component is configured so that the leader is arranged to limit obtuse angle relative to the first helical form spline.
Using the bicycle drive shaft component according to the 47th scheme, during sliding, leader is significantly reduced Noise.
48th scheme according to the present invention, according to the 30th scheme either into the 47th scheme case from Driving flower-drum component is configured so that second ratchet component includes flower-drum body engagement part, flower-drum body engagement portion Divide and engaged in a manner of transmitting torque with the flower-drum ontology, by rotary force from first ratchet component via the flower-drum Body engagement is partially transferred to the flower-drum ontology.
Using the bicycle drive shaft component according to the 48th scheme, the drive of bicycle drive shaft component can be further improved Efficiency of movement and the weight for mitigating flywheel structure.
49th scheme according to the present invention is configured so that institute according to the bicycle drive shaft component of the 48th scheme One stated in flower-drum body engagement part and the flower-drum ontology includes at least one protrusion, at least one described protrusion is opposite It is radially extended in the center of rotation axis of the bicycle drive shaft component.Flower-drum body engagement part and the flower-drum ontology In another include at least one recess portion engaged at least one described protrusion.
Using the bicycle drive shaft component according to the 49th scheme, the drive of bicycle drive shaft component can be further improved Efficiency of movement and the weight for mitigating flywheel structure.
50th scheme according to the present invention, according to the bicycle of the 30th scheme either a program into the 49th scheme Flower-drum component further includes biasing member, and the biasing member is arranged between the flower-drum ontology and first ratchet component, First ratchet component to be biased along the axial direction towards second ratchet component.
Using the bicycle drive shaft component according to the 50th scheme, the driving of bicycle drive shaft component can be further improved Efficiency and the weight for mitigating flywheel structure.
51st scheme according to the present invention, voluntarily according to case either in the 44th to the 47th scheme Vehicle flower-drum component further includes biasing member, biasing member setting the flower-drum ontology and first ratchet component it Between, first ratchet component is biased along the axial direction towards second ratchet component.The second ratchet structure Part is engaged in a manner of transmitting torque with the flower-drum ontology.The biasing member and the flower-drum body engagement, with it is described Flower-drum ontology rotates together.During sliding, first ratchet component contact the leader with second ratchet Component is detached from, and generates rotating friction force between the biasing member and first ratchet component.
Using the bicycle drive shaft component according to the 51st scheme, during sliding, leader is significantly reduced Noise.
52nd scheme according to the present invention, according to the bicycle of case either in the 30th to the 51st scheme Flower-drum component is configured so that at least one described first hook tooth includes multiple first hook tooths.At least one described second spine The gear teeth include multiple second hook tooths.
Using the bicycle drive shaft component according to the 52nd scheme, the drive of bicycle drive shaft component can be further improved Efficiency of movement and the weight for mitigating flywheel structure.
53rd scheme according to the present invention, according to the bicycle pattern of either a program in the 30th to the 52nd scheme Drum component is configured so that each of first ratchet component and second ratchet component are with annular shape.
Using the bicycle drive shaft component according to the 53rd scheme, the drive of bicycle drive shaft component can be further improved Efficiency of movement and the weight for mitigating flywheel structure.
54th scheme according to the present invention, voluntarily according to scheme either in the 30th to the 53rd scheme Vehicle flower-drum component is configured so that the sprocket wheel support ontology includes adjacency section, with adjoining second ratchet component, to limit Make axial movement of second ratchet component far from the flower-drum ontology.First ratchet component is arranged in second spine It takes turns on the axial side opposite with the sprocket wheel support adjacency section of ontology on the axial direction of component.
Using the bicycle drive shaft component according to the 54th scheme, the drive of bicycle drive shaft component can be further improved Efficiency of movement and the weight for mitigating flywheel structure.
55th scheme according to the present invention, the bicycle drive shaft component according to the 54th scheme further include biasing structure Part, the biasing member is arranged between the flower-drum ontology and first ratchet component, by first ratchet component It is biased along the axial direction towards second ratchet component.
Using the bicycle drive shaft component according to the 55th scheme, the drive of bicycle drive shaft component can be further improved Efficiency of movement and the weight for mitigating flywheel structure.
56th scheme according to the present invention is configured so that institute according to the bicycle drive shaft component of the 55th scheme Stating flower-drum ontology includes inner space.The peripheral surface of sprocket wheel support ontology supports first ratchet component and described the Two ratchet components.In the sprocket wheel support ontology, the biasing member, first ratchet component and second ratchet component Each be at least partially disposed in the inner space of the flower-drum ontology.
Using the bicycle drive shaft component according to the 56th scheme, the drive of bicycle drive shaft component can be further improved Efficiency of movement and the weight for mitigating flywheel structure.
57th scheme according to the present invention, according to the bicycle of case either in the 30th to the 56th scheme Flower-drum component is configured so that the flower-drum ontology includes the first spoke installation section, the second spoke installation section and first axis Length.First spoke installation section has first axis most external.Second spoke installation section is axial with second Most external.The first axis length is limited to the first axle of first spoke installation section on the axial direction To most external and second spoke installation section described second it is axially outermost between.The first axis length be equal to or Greater than 55mm.
Using the bicycle drive shaft component according to the 57th scheme, first axis length is improved including bicycle drive shaft The intensity of the wheel of component.
58th scheme according to the present invention is configured so that institute according to the bicycle drive shaft component of the 57th scheme First axis length is stated equal to or more than 60mm.
Using the bicycle drive shaft component according to the 58th scheme, first axis length is further improved including voluntarily The intensity of the wheel of vehicle flower-drum component.
59th scheme according to the present invention is configured so that institute according to the bicycle drive shaft component of the 57th scheme First axis length is stated equal to or more than 65mm.
Using the bicycle drive shaft component according to the 59th scheme, first axis length is further improved including voluntarily The intensity of the wheel of vehicle flower-drum component.
60th scheme according to the present invention, according to the bicycle of case either in the 57th to the 59th scheme Flower-drum component is configured so that the flower drum shaft includes first axis vehicle frame abutment surface, the second axial vehicle frame abutment surface and the Two axial lengths.The first axis vehicle frame abutment surface is configured to be installed to cycle frame in the bicycle drive shaft component In the state of, first of the cycle frame is abutted against along the axial direction.Described second axial vehicle frame adjacency list Surface construction is supported in the state that the bicycle drive shaft component is installed to the cycle frame along axial direction adjoining By second of the cycle frame.Second axial length is limited to the first axis vehicle on the axial direction Between frame abutment surface and the second axial vehicle frame abutment surface.Second axial length is equal to or more than 140mm.
Using the bicycle drive shaft component according to the 60th scheme, the second axial length keeps bicycle drive shaft component attachable To various types of cycle frames and the effect of the 30th scheme of acquisition.
61st scheme according to the present invention, voluntarily according to case either in the 57th to the 59th scheme Vehicle flower-drum component is configured to, so that the flower drum shaft includes first axis vehicle frame abutment surface, the second axial vehicle frame abutment surface With the second axial length.The first axis vehicle frame abutment surface is configured to be installed to bicycle in the bicycle drive shaft component In the state of vehicle frame, first of the cycle frame is abutted against along the axial direction.Described second axial vehicle frame is adjacent Surface structure is connect in the state that the bicycle drive shaft component is installed to the cycle frame, it is adjacent along the axial direction Connect second against the cycle frame.Second axial length is limited to the first axle on the axial direction To between vehicle frame abutment surface and the second axial vehicle frame abutment surface.Second axial length is equal to or more than 145mm.
Using the bicycle drive shaft component according to the 61st scheme, it is long that the second axial length improves selection first axis The freedom degree of degree and/or the wider range for realizing bicycle rear sprocket assembly, and enable first axis length elongated, So as to which more sprocket wheels are installed to bicycle drive shaft component.
62nd scheme according to the present invention, voluntarily according to case either in the 57th to the 59th scheme Vehicle flower-drum component be configured so that the flower drum shaft include first axis vehicle frame abutment surface, the second axial vehicle frame abutment surface and Second axial length.The first axis vehicle frame abutment surface is configured to be installed to vehicle in the bicycle drive shaft component In the state of frame, first of the cycle frame is abutted against along the axial direction.Described second axial vehicle frame is adjacent Surface structure is abutted in the state that the bicycle drive shaft component is installed to the cycle frame along the axial direction Against second of the cycle frame.Second axial length is limited to the first axis on the axial direction Between vehicle frame abutment surface and the second axial vehicle frame abutment surface.Second axial length is equal to or more than 147mm.
Using the bicycle drive shaft component according to the 62nd scheme, it is long that the second axial length improves selection first axis The freedom degree of degree and/or the wider range for realizing bicycle rear sprocket assembly, and enable first axis length elongated So as to which more sprocket wheels are installed to bicycle drive shaft component.
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 of bicycle drivetrain according to first embodiment.
Fig. 2 is the exploded perspective view of the bicycle drivetrain illustrated in Fig. 1.
Fig. 3 is another perspective view of the bicycle drivetrain illustrated in Fig. 2.
Fig. 4 is the sectional view along the line IV-IV of Fig. 2 bicycle drivetrain intercepted.
Fig. 5 is the exploded perspective view of the bicycle drive shaft component of the bicycle drivetrain illustrated in Fig. 2.
Fig. 6 is the amplification sectional view of the bicycle drivetrain illustrated in Fig. 4.
Fig. 7 is the perspective view of the sprocket wheel support ontology of the bicycle drive shaft component of the bicycle drivetrain illustrated in Fig. 2.
Fig. 8 is another solid of the sprocket wheel support ontology of the bicycle drive shaft component of the bicycle drivetrain illustrated in Fig. 2 Figure.
Fig. 9 is the side elevation view of the sprocket wheel support ontology illustrated in Fig. 7.
Figure 10 is the side elevation view that ontology is supported according to the sprocket wheel of the bicycle drive shaft component of a modification.
Figure 11 is the amplification sectional view of the sprocket wheel support ontology illustrated in Fig. 7.
Figure 12 is the sectional view of the sprocket wheel support ontology illustrated in Fig. 7.
Figure 13 is the perspective view of the bicycle drive shaft component of the bicycle drivetrain illustrated in Fig. 2.
Figure 14 is the side elevation view of the bicycle drive shaft component of the bicycle drivetrain illustrated in Fig. 2.
Figure 15 is the rearview of the bicycle drive shaft component of the bicycle drivetrain illustrated in Fig. 2.
Figure 16 is the sectional view along the line XVI-XVI of Fig. 5 bicycle drive shaft component intercepted.
Figure 17 is the side elevation view of the bicycle rear sprocket assembly of the bicycle drivetrain illustrated in Fig. 2.
Figure 18 is the exploded perspective view of the bicycle rear sprocket assembly illustrated in Figure 17.
Figure 19 is the exploded partial perspective view of the bicycle rear sprocket assembly illustrated in Figure 17.
Figure 20 is another exploded partial perspective view of the bicycle rear sprocket assembly illustrated in Figure 17.
Figure 21 is another exploded partial perspective view of the bicycle rear sprocket assembly illustrated in Figure 17.
Figure 22 is another exploded partial perspective view of the bicycle rear sprocket assembly illustrated in Figure 17.
Figure 23 is the perspective, cut-away view along the line XXIII-XXIII of Figure 17 bicycle rear sprocket assembly intercepted.
Figure 24 is the perspective view of the minimum sprocket wheel of the bicycle rear sprocket assembly illustrated in Figure 17.
Figure 25 is another perspective view of the minimum sprocket wheel of the bicycle rear sprocket assembly illustrated in Figure 17.
Figure 26 is the side elevation view of the minimum sprocket wheel of the bicycle rear sprocket assembly illustrated in Figure 17.
Figure 27 is the side elevation view according to the minimum sprocket wheel of a modification.
Figure 28 is the amplification sectional view of the minimum sprocket wheel illustrated in Figure 24.
Figure 29 is the sectional view of the minimum sprocket wheel illustrated in Figure 24.
Figure 30 is the sprocket wheel support ontology of the bicycle drivetrain illustrated in Fig. 2 and the sectional view of minimum sprocket wheel.
Figure 31 is the exploded partial perspective view of the bicycle rear sprocket assembly illustrated in Figure 17.
Figure 32 is the perspective view of the sprocket wheel supporting element of the bicycle rear sprocket assembly illustrated in Figure 17.
Figure 33 is the exploded perspective view of a part of the bicycle drive shaft component illustrated in Fig. 5.
Figure 34 is the exploded perspective view of a part of the bicycle drive shaft component illustrated in Figure 33.
Figure 35 is the exploded perspective view of a part of the bicycle drive shaft component illustrated in Figure 33.
Figure 36 is the exploded perspective view of a part of the bicycle drive shaft component illustrated in Figure 33.
Figure 37 is the partial cross-sectional view of the bicycle drive shaft component illustrated in Figure 33.
Figure 38 is the sectional view along the line XXXVIII-XXXVIII of Figure 37 bicycle drive shaft component intercepted.
Figure 39 is the perspective view of the spacer of the bicycle drive shaft component illustrated in Figure 33.
Figure 40 is the perspective view of the spacer of the bicycle drive shaft component illustrated in Figure 33.
Figure 41 is to show the first ratchet component and sprocket wheel support ontology of the bicycle drive shaft component illustrated in Figure 33 Act the schematic diagram of (scrunching).
Figure 42 is to show the first ratchet component and sprocket wheel support ontology of the bicycle drive shaft component illustrated in Figure 33 Act the schematic diagram of (sliding).
Figure 43 is the perspective view of bicycle drive shaft component according to the second embodiment.
Figure 44 is the side elevation view of the bicycle drive shaft component illustrated in Figure 43.
Figure 45 is the amplification sectional view for supporting ontology with the sprocket wheel of the modification of second embodiment according to first embodiment.
Figure 46 is the amplification sectional view with the minimum sprocket wheel of the modification of second embodiment according to first embodiment.
Specific embodiment
Embodiment is described with reference to the drawings, wherein similar appended drawing reference indicates corresponding or identical in the drawings Element.
First embodiment
Referring initially to Fig. 1, bicycle drivetrain 10 according to first embodiment is including bicycle drive shaft component 12 and voluntarily Vehicle rear sprocket assembly 14.Bicycle drive shaft component 12 is fixed to cycle frame BF.Bicycle rear sprocket assembly 14 is mounted on certainly It drives a vehicle on flower-drum component 12.Bicycle brake rotor 16 is mounted on bicycle drive shaft 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 drive shaft component 12 or bicycle rear sprocket assembly 14 should be relative on a horizontal surface uprightly to ride Bicycle that position uses, equipped with bicycle drivetrain 10, bicycle drive shaft component 12 or bicycle rear sprocket assembly 14 To explain.
As shown in Figures 2 and 3, bicycle drive shaft component 12 and bicycle rear sprocket assembly 14 have center of rotation axis A1.Bicycle rear sprocket assembly 14 surrounds Pivot axle relative to cycle frame BF (Fig. 1) by bicycle drive shaft component 12 Line A1 is pivotably supported.Bicycle rear sprocket assembly 14 is configured to engage with bicycle chain 20, to scrunch period certainly Drive a vehicle transmitting driving rotary force F1 between chain 20 and bicycle rear sprocket assembly 14.During scrunching, bicycle rear sprocket group Part 14 rotates on driving direction of rotation D11 around center of rotation axis A1.Drive direction of rotation D11 along bicycle drive shaft component 12 Or the circumferential direction D1 of bicycle rear sprocket assembly 14 is limited.Opposite direction of rotation D12 is opposite with driving direction of rotation D11 Direction and along circumferential direction D1 are limited.
As shown in Fig. 2, bicycle drive shaft component 12 includes that sprocket wheel supports ontology 28.Bicycle rear sprocket assembly 14 is mounted on Sprocket wheel supports on ontology 28, to support transmitting driving rotary force F1 between ontology 28 and bicycle rear sprocket assembly 14 in sprocket wheel. Bicycle drive shaft component 12 includes flower drum shaft 30.Sprocket wheel support ontology 28 is rotatably installed in flower around center of rotation axis A1 On drum axis 30.Bicycle drive shaft component 12 includes locking ring 32.Locking ring 32 is fixed to sprocket wheel and supports ontology 28, relative to chain Wheel support ontology 28 keeps bicycle rear sprocket assembly 14 on the axial direction D2 for be parallel to center of rotation axis A1.
As shown in figure 4, bicycle drive shaft component 12 is fixed to cycle frame BF by wheel securing structure WS.Flower drum shaft 30 have through-hole 30A.The fixed link WS1 of wheel securing structure WS extends through the through-hole 30A of flower drum shaft 30.Flower drum shaft 30 includes 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 along rotation Central axis A1 extends.First axle end 30B is arranged in the first recess portion BF11 of the first vehicle frame BF1 of cycle frame BF. 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 passes through wheel Fixed structure WS is maintained between the first vehicle frame BF1 and the second vehicle frame BF2.Wheel securing structure WS include in bicycle art The structure known.Therefore, for simplicity, will not be described in detail here.
As shown in Figure 4 and Figure 5, bicycle drive shaft component 12 further includes brake rotors support ontology 34.Brake rotors 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 voluntarily Vehicle brake rotors 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 5, bicycle drive shaft component 12 includes flower-drum ontology 36.Flower-drum ontology 36 surrounds bicycle drive shaft component 12 center of rotation axis A1 is rotatably installed in flower drum shaft 30.In this embodiment, sprocket wheel support ontology 28 is and flower The isolated component of drum ontology 36.Brake rotors support ontology 34 and flower-drum ontology 36 are integrally provided as single one-piece integral member. However, sprocket wheel support ontology 28 can be integrally provided with flower-drum ontology 36.Brake rotors support ontology 34 can be and flower-drum The isolated component of ontology 36.
Locking ring 32 includes external thread part 32A.It includes internal thread part 28A that sprocket wheel, which supports ontology 28,.It is fixed in locking ring 32 In the state of supporting ontology 28 to sprocket wheel, external thread part 32A is threadedly engaged with internal thread part 28A.
As shown in fig. 6, bicycle drive shaft component 12 includes flywheel structure 38.Sprocket wheel supports ontology 28 to pass through flywheel structure 38 It is operably linked to flower-drum ontology 36.Flywheel structure 38 is configured to sprocket wheel support ontology 28 being connected to flower-drum ontology 36, with Make sprocket wheel support ontology 28 with flower-drum ontology 36 together along driving direction of rotation D11 (Fig. 5) rotation during scrunching.Flywheel structure 38 are configured to allow for the sprocket wheel support ontology 28 during sliding to revolve relative to flower-drum ontology 36 along opposite direction of rotation D12 (Fig. 5) Turn.Therefore, flywheel structure 38 may be interpreted as one-way clutch structure 38.Flywheel structure 38 will be explained in detail below.
Bicycle drive shaft component 12 includes first bearing 39A and second bearing 39B.First bearing 39A and second bearing 39B Setting supports between ontology 28 and flower drum shaft 30 in sprocket wheel, with relative to flower drum shaft 30 around the rotatable twelve Earthly Branches of center of rotation axis A1 It supports 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 All 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 7 and Figure 8, 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) Multiple external spline teeths 40.That is, at least one external spline teeth 40 includes multiple external spline teeths 40.It includes construction that sprocket wheel, which supports ontology 28, At at least nine external spline teeths 40 engaged with bicycle rear sprocket assembly 14 (Fig. 6).Sprocket wheel support ontology 28 includes being configured to At least ten external spline teeths 40 engaged with bicycle rear sprocket assembly 14 (Fig. 6).
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 lock flange 32B of locking ring 32 on D2 in the axial direction.It is larger straight Diameter portion 42 can have internal cavities, and the driving structure of such as one-way clutch structure is contained in internal cavities. As needed, larger diameter portion 42 can be omitted from bicycle drive shaft component 12.
As shown in figure 9, the sum of at least ten external spline teeths 40 is equal to or more than 20.At least ten external spline teeths 40 it is total Number is equal to or more than 25.In this embodiment, the sum of at least ten external spline teeths 40 is 26.However, external spline teeth 40 is total Number 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.Multiple external spline teeths At least two external spline teeths in 40 relative to bicycle drive shaft component 12 center of rotation axis A1 with the first outer angular pitch PA11 is circumferentially.In rotation of at least two external spline teeths relative to bicycle drive shaft component 12 in multiple external spline teeths 40 Mandrel line A1 with the second outer angular pitch PA12 circumferentially.In this embodiment, the second outer outer tooth pitch of angular pitch PA12 and first Angle PA11 is different.However, the second outer angular pitch PA12 may be approximately 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 10 degree to 20 degree.The range of first outer angular pitch PA11 is 12 degree to 15 Degree.The range of first outer angular pitch PA11 is 13 degree to 14 degree.In this embodiment, the first outer angular pitch PA11 is 13.3 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 30 degree.In this embodiment, the second outer angular pitch PA12 is 26 Degree.However, the second outer angular pitch PA12 is not limited to the embodiment and above range.
External spline teeth 40 has shape substantially identical to each other.External spline teeth 40 has spline ruler substantially identical to each other It is very little.When along center of rotation axis A1 observation, external spline teeth 40 has profile substantially identical to each other.However, as shown in Figure 10, At least one of at least ten external spline teeths 40 can have and the another second flower at least ten external spline teeths 40 Variform first spline-shaped of key.At least one of at least ten external spline teeths 40 can have to be spent outside at least ten The first different spline size of another the second spline size in key teeth 40.When along center of rotation axis A1 observation, until At least one of few ten external spline teeths 40 can have different from another the profile at least ten external spline teeths 40 Profile.In Figure 10, one in external spline teeth 40 has the flower different from the spline-shaped of other teeth of external spline teeth 40 Key-shaped shape.One in external spline teeth 40 has the spline size different from the spline size of other teeth in external spline teeth 40. When along center of rotation axis A1 observation, one in external spline teeth 40 have it is different from the profile of other teeth of external spline teeth 40 Profile.
As shown in figure 11, each of at least ten external spline teeths 40 have external splines driving surface 48 and external splines non- Driving surface 50.At least one external spline teeth 40 includes multiple external spline teeths, and multiple external spline teeths include multiple external splines drivings Surface 48, to receive the driving rotary force F1 for coming from bicycle rear sprocket assembly 14 (Fig. 6) during scrunching.Multiple external spline teeths 40 include the non-driven surface 50 of multiple external splines.External splines driving surface 48 and bicycle rear sprocket assembly 14 are accessible, with The driving rotary force F1 for coming from bicycle rear sprocket assembly 14 (Fig. 6) is received during scrunching.External splines driving surface 48 is towards phase Reverse rotation direction D12.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.
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.Reference point 50R is arranged in radially outermost edge Between 50A and radially inner most edge 50B.However, reference point 50R can be overlapped with radially inner most edge 50B.
The summation of circumferential maximum width MW1 is equal to or more than 55mm.The summation of circumferential maximum width MW1 is equal to or more than 60mm.The summation of circumferential maximum width MW1 is equal to or more than 65mm.In this embodiment, the summation of circumferential maximum width MW1 is 68mm.However, the summation of circumferential maximum width MW1 is not limited to the embodiment and above range.
As shown in figure 12, at least one external spline teeth 40 has external splines top diameter DM11.External splines top diameter DM11 be equal to or Greater than 25mm.External splines top diameter DM11 is equal to or more than 29mm.External splines top diameter DM11 is equal to or less than 30mm.In the embodiment In, external splines top diameter DM11 is 29.6mm.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 28mm.External splines bottom diameter DM12 is equal to or greatly In 25mm.External splines bottom diameter DM12 is equal to or more than 27mm.In this embodiment, diameter DM12 in external splines bottom is 27.2mm.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 11, 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.In the reality It applies in example, the summation of radical length RL11 is 19.5mm.However, the summation of radical 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 12mm.In this embodiment, the summation for adding radical length RL12 is 31.85mm.However, the summation of additional radical length RL12 It is not limited to the embodiment.
At least at least one of nine external spline teeths 40 have about circumferential tooth top center line CL1 asymmetrically shape. Circumferential tooth top center line CL1 is the circumferential center for connecting the radially end 40A of center of rotation axis A1 and external spline teeth 40 The line of point CP1.However, at least one of external spline teeth 40 can have about the symmetrical shape of circumferential tooth top center line CL1. At least at least one of nine external spline teeths 40 include external splines driving surface 48 and the non-driven surface 50 of external splines.
External splines driving surface 48 has the first external splines surface angle AG11.First external splines surface angle AG11 is limited to outer Between spline driving surface 48 and the first radial line L11.Pivot axle of the first radial line L11 from bicycle drive shaft component 12 Line A1 extends to the radially outermost edge 48A of external splines driving surface 48.The first outer outer angular pitch of angular pitch PA11 or second PA12 is limited between the first adjacent radial line L11 (see, e.g. Fig. 9).
The non-driven surface 50 of external splines has the second external splines surface angle AG12.Second external splines surface angle AG12 is limited to Between the non-driven surface 50 of external splines and the second radial line L12.Second radial line L12 is from the rotation of bicycle drive shaft component 12 Mandrel line A1 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 different from the first external splines surface angle AG11.Flower outside first Key table face angle AG11 is less than the second external splines surface angle AG12.However, the first external splines surface angle AG11 can be equal to or more than Second external splines surface angle AG12.
The range of first external splines surface angle AG11 is 0 degree to 10 degree.The range of second external splines surface angle AG12 is 0 degree To 60 degree.In this embodiment, the first external splines surface angle AG11 is 5 degree.Second external splines surface angle AG12 is 45 degree.So And 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 13 and Figure 14, brake rotors support ontology 34 includes being configured to and bicycle brake rotor 16 (Fig. 4) 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 14, at least one additional external spline teeth 52 has additional external splines top diameter DM14.As shown in figure 15, 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 15, 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 15 With flange shape shape spoke installation section is extended radially outwardly relative to the center of rotation axis of bicycle drive shaft component Construction and spoke installation section be 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 state of cycle frame BF in bicycle drive shaft component 12 Under the surface towards the first vehicle frame BF1 on D2 in the axial direction.Second axially outermost 36D is included in bicycle drive shaft component 12 Surface towards the second vehicle frame BF2 on D2 in the axial direction is installed in the state of cycle frame BF.
Flower-drum ontology 36 includes first axis length AL1.First axis length AL1 is in the axis about center of rotation axis A1 It is limited to the first axis most external 36C's and the second spoke installation section 36B of the first spoke installation section 36A on the D2 of direction Between second axially outermost 36D.First axis length AL1 can be equal to or more than 55mm.First axis length AL1 can be waited In or less than 80mm.First axis length AL1 can be equal to or more than 60mm.First axis length AL1 can be equal to or more than 65mm.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 15, 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 state of cycle frame BF in bicycle drive shaft component 12 Under in axial direction D2 abut against first BF12 of cycle frame BF.Second axial direction vehicle frame abutment surface 30C1 is configured to In axial direction D2 abuts against cycle frame BF in the state that bicycle drive shaft component 12 is installed to cycle frame BF Second BF22.First axis vehicle frame abutment surface 30B1 is positioned to than the second axial direction vehicle frame abutment surface 30C1 in axial side Ontology 28 is supported closer to sprocket wheel on D2.Sprocket wheel supports ontology 28, and setting is adjacent in first axis vehicle frame on D2 in the axial direction Between the axial vehicle frame abutment surface 30C1 of surface 30B1 and second.
Flower drum shaft 30 includes the second axial length AL2.Second axial length AL2 is limited to first axle on D2 in the axial direction 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 less than 160mm.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, second Axial length AL2 is not limited to the embodiment and above range.The example of second axial length AL2 include 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 figure 16, sprocket wheel support ontology 28 includes first axis end 28B, the second axial end portion 28C and axial chain Take turns abutment surface 28D.In axial direction D2 is opposite with first axis end 28B by second axial end portion 28C.Bicycle drive shaft component 12 have the axial centre plane CPL that will divide equally on bicycle drive shaft component 12 in the axial direction D2.Axial sprocket wheel abutment surface 28D is positioned to the axial centre plane on D2 in the axial direction than first axis end 28B closer to bicycle drive shaft component 12 CPL.Second axial end portion 28C is positioned on D2 in the axial direction than axial sprocket wheel abutment surface 28D closer to bicycle drive shaft The axial centre plane CPL of component 12.The axial centre plane CPL of bicycle drive shaft component 12 is perpendicular to center of rotation axis A1.In this embodiment, axial sprocket wheel abutment surface 28D is arranged in larger diameter portion 42, however, axial sprocket wheel abutment surface 28D, which can according to need, to be arranged in the other parts of bicycle drive shaft component 12.It is mounted in bicycle rear sprocket assembly 14 In the state that sprocket wheel supports on ontology 28, axial sprocket wheel abutment surface 28D is contacted with bicycle rear sprocket assembly 14.Axial sprocket wheel Abutment surface 28D in axial direction D2 towards first axis end 28B.
Flower drum shaft 30 includes that sprocket wheel arranges axial length AL3.Sprocket wheel arrangement axial length AL3 is limited on D2 in the axial direction Between first axis vehicle frame abutment surface 30B1 and the axial sprocket wheel abutment surface 28D of sprocket wheel support ontology 28.In the implementation In example, sprocket wheel arranges that the range of axial length 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 extends to 44.25mm.However, sprocket wheel cloth It sets axial length AL3 and is not limited to the 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 17, bicycle rear sprocket assembly 14 includes at least one sprocket wheel.At least one sprocket wheel includes minimal chain Take turns SP1 and maximum sprocket wheel SP12.Minimum sprocket wheel SP1 can also be referred to as sprocket wheel SP1.Maximum sprocket wheel SP12 can also be referred to as chain Take turns SP12.In this embodiment, at least one sprocket wheel further includes sprocket wheel SP2 to SP11.Sprocket wheel SP1 corresponds to high tap position.Sprocket wheel SP12 corresponds to low-grade location.The sum of the sprocket wheel of bicycle rear sprocket assembly 14 is not limited to the embodiment.
Minimum sprocket wheel SP1 includes at least one sprocket SP1B.At least one sprocket SP1B's of minimum sprocket wheel SP1 is total Number is equal to or less than 10.In this embodiment, the sum of at least one sprocket SP1B of minimum sprocket wheel SP1 is 10.However, most The sum of at least one sprocket SP1B of minor sprocket SP1 is not limited to the embodiment and above range.
Maximum sprocket wheel SP12 includes at least one sprocket SP12B.At least one sprocket SP12B of maximum sprocket wheel SP12 Sum be equal to or more than 46.The sum of at least one sprocket SP12B of maximum sprocket wheel SP12 is equal to or more than 50.In the reality It applies in example, the sum of at least one sprocket SP12B of maximum sprocket wheel SP12 is 51.However, at least the one of maximum sprocket wheel SP12 The sum of a sprocket SP12B is not limited to the embodiment and above range.
Sprocket wheel SP2 includes at least one sprocket SP2B.Sprocket wheel SP3 includes at least one sprocket SP3B.Sprocket wheel SP4 packet Include at least one sprocket SP4B.Sprocket wheel SP5 includes at least one sprocket SP5B.Sprocket wheel SP6 includes at least one sprocket SP6B.Sprocket wheel SP7 includes at least one sprocket SP7B.Sprocket wheel SP8 includes at least one sprocket SP8B.Sprocket wheel SP9 includes At least one sprocket SP9B.Sprocket wheel SP10 includes at least one sprocket SP10B.Sprocket wheel SP11 includes at least one sprocket SP11B。
The sum of at least one sprocket SP2B is 12.The sum of at least one sprocket SP3B is 14.At least one chain The sum of gear teeth SP4B is 16.The sum of at least one sprocket SP5B is 18.The sum of at least one sprocket SP6B is 21. The sum of at least one sprocket SP7B is 24.The sum of at least one sprocket SP8B is 28.At least one sprocket SP9B Sum be 33.The sum of at least one sprocket SP10B is 39.The sum of at least one sprocket SP11B is 45.Sprocket wheel The sum of the sprocket of SP2 to each of SP11 is not limited to the embodiment.
As shown in figure 18, 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.Bicycle rear sprocket assembly 14 includes sprocket wheel Supporting element 56, multiple spacers 58, the first ring 59A and the second ring 59B.In the illustrated embodiment, sprocket wheel SP1 to SP12 is attached to Sprocket wheel supporting element 56.For example, sprocket wheel SP1 to SP12 is attached to sprocket wheel supporting element 56 by the integrated structure of such as adhesive, make It obtains due to not using metal fastening member, the weight of bicycle rear sprocket assembly 14 can be mitigated.
As shown in figure 19, sprocket wheel SP1 includes sprocket body SP1A and multiple sprocket SP1B.Multiple sprocket SP1B are from chain Wheel ontology SP1A extends radially outwardly.Sprocket wheel SP2 includes sprocket body SP2A and multiple sprocket SP2B.Multiple sprocket SP2B Accessary sprocket wheel ontology SP2A extends radially outwardly.Sprocket wheel SP3 includes sprocket body SP3A and multiple sprocket SP3B.Multiple sprockets SP3B accessary sprocket wheel ontology SP3A extends radially outwardly.Sprocket wheel SP4 includes sprocket body SP4A and multiple sprocket SP4B.Multiple chains Gear teeth SP4B accessary sprocket wheel ontology SP4A extends radially outwardly.Sprocket wheel SP5 includes sprocket body SP5A and multiple sprocket SP5B.It is more A sprocket SP5B accessary sprocket wheel ontology SP5A extends radially outwardly.First ring 59A is arranged between sprocket wheel SP3 and sprocket wheel SP4.The Two ring 59B are arranged between sprocket wheel SP4 and sprocket wheel SP5.
As shown in figure 20, sprocket wheel SP6 includes sprocket body SP6A and multiple sprocket SP6B.Multiple sprocket SP6B are from chain Wheel ontology SP6A extends radially outwardly.Sprocket wheel SP7 includes sprocket body SP7A and multiple sprocket SP7B.Multiple sprocket SP7B Accessary sprocket wheel ontology SP7A extends radially outwardly.Sprocket wheel SP8 includes sprocket body SP8A and multiple sprocket SP8B.Multiple sprockets SP8B accessary sprocket wheel ontology SP8A extends radially outwardly.
As shown in figure 21, sprocket wheel SP9 includes sprocket body SP9A and multiple sprocket SP9B.Multiple sprocket SP9B are from chain Wheel ontology SP9A extends radially outwardly.Sprocket wheel SP10 includes sprocket body SP10A and multiple sprocket SP10B.Multiple sprockets SP10B accessary sprocket wheel ontology SP10A extends radially outwardly.Sprocket wheel SP11 includes sprocket body SP11A and multiple sprocket SP11B. Multiple sprocket SP11B accessary sprocket wheel ontology SP11A extend radially outwardly.Sprocket wheel SP12 includes sprocket body SP12A and multiple chains Gear teeth SP12B.Multiple sprocket SP12B accessary sprocket wheel ontology SP12A extend radially outwardly.
As shown in figure 22, sprocket wheel supporting element 56 includes flower-drum joint portion 60 and multiple support arms 62.Multiple support arms 62 from Flower-drum joint portion 60 extends radially outwardly.Support arm 62 includes the first attachment 62A to the 8th attachment 62H.Multiple spacers 58 include multiple first spacer 58A, multiple second spacer 58B, multiple third spacer 58C, multiple 4th spacers 58D, multiple 5th spacer 58E, multiple 6th spacer 58F and multiple 7th spacer 58G.
As shown in figure 23, the first spacer 58A is arranged between sprocket wheel SP5 and sprocket wheel SP6.Second spacer 58B setting Between sprocket wheel SP6 and sprocket wheel SP7.Third spacer 58C is arranged between sprocket wheel SP7 and sprocket wheel SP8.4th spacer 58D It is arranged between sprocket wheel SP8 and sprocket wheel SP9.5th spacer 58E is arranged between sprocket wheel SP9 and sprocket wheel SP10.6th interval Part 58F is arranged between sprocket wheel SP10 and sprocket wheel SP11.7th spacer 58G is arranged between sprocket wheel SP11 and sprocket wheel SP12.
Sprocket wheel SP6 and the first spacer 58A is attached to the first attachment 62A by the integrated structure of such as adhesive.Chain It takes turns SP7 and the second spacer 58B and the second attachment 62B is attached to by the integrated structure of such as adhesive.Sprocket wheel SP8 and third Spacer 58C is attached to third attachment 62C by the integrated structure of such as adhesive.Sprocket wheel SP9 and the 4th spacer 58D is logical The integrated structure for crossing such as adhesive is attached to the 4th attachment 62D.Sprocket wheel SP10 and the 5th spacer 58E is by such as bonding The integrated structure of agent is attached to the 5th attachment 62E.Sprocket wheel SP11 and the 6th spacer 58F passes through the combination knot of such as adhesive Structure is attached to the 6th attachment 62F.Sprocket wheel SP12 and the 7th spacer 58G is attached to by the integrated structure of such as adhesive Seven attachment 62G.Sprocket wheel SP5 and the second ring 59B is attached to the 8th attachment 62H by the integrated structure of such as adhesive.Flower Drum joint portion 60, sprocket wheel SP1 to sprocket wheel SP4, the first ring 59A and the second ring 59B are maintained on D2 larger straight in the axial direction Between diameter portion 42 and the lock flange 32B of locking ring 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. Each of sprocket wheel supporting element 56, the first spacer 58A to the 7th spacer 58G, the first ring 59A and second ring 59B are by all As the nonmetallic materials of resin material are made.However, at least one of sprocket wheel SP1 to sprocket wheel SP12 can at least partly by Nonmetallic materials are made.Sprocket wheel supporting element 56, the first spacer 58A to the 7th spacer 58G, the first ring 59A and the second ring 59B At least one of can be at least partly made of such as metal material of aluminium, iron or titanium.
At least one sprocket wheel includes at least one inner spline gear for being configured to engage with bicycle drive shaft component 12.Such as Figure 24 With shown in Figure 25, at least one sprocket wheel includes at least ten inner spline gears for being configured to engage with bicycle drive shaft component 12.Extremely A few inner spline gear includes multiple inner spline gears.Therefore, at least one sprocket wheel includes being configured to and bicycle drive shaft component 12 Multiple inner spline gears of engagement.In this embodiment, sprocket wheel SP1 includes being configured to engage at least with bicycle drive shaft component 12 Ten inner spline gears 64.In this embodiment, sprocket wheel SP1 includes being configured to support ontology with the sprocket wheel of bicycle drive shaft component 12 The inner spline gear 64 that 28 external spline teeth 40 engages.Sprocket body SP1A has ring-type.64 accessary sprocket wheel ontology SP1A of inner spline gear It extends radially inwardly.
As shown in figure 26, the sum of at least ten inner spline gears 64 is equal to or more than 20.At least ten inner spline gears 64 Sum is equal to or more than 25.In this embodiment, the sum of inner spline gear 64 is 26.However, the sum of inner spline gear 64 is unlimited In the embodiment and above range.
At least ten inner spline gears 64 have in first angular pitch PA22 in angular pitch PA21 and second.Multiple inner spline gears At least two inner spline gears in 64 relative to bicycle rear sprocket assembly 14 center of rotation axis A1 with angular pitch in first PA21 is circumferentially.At least two inner spline gears in multiple inner spline gears 64 are relative to center of rotation axis A1 with the second internal tooth Elongation PA22 is circumferentially.In this embodiment, angular pitch PA22 is different from angular pitch PA21 in first in second.However, the Angular pitch PA22 may be approximately equal to angular pitch PA21 in first in two.
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 10 degree to 20 degree in first.The range of angular pitch PA21 is 12 degree to 15 in first Degree.The range of angular pitch PA21 is 13 degree to 14 degree in first.In this embodiment, angular pitch PA21 is 13.3 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 30 degree in second.In this embodiment, angular pitch PA22 is 26 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 have and another at least ten inner spline gears 64 The first different spline-shaped of two spline-shapeds.At least one of at least ten inner spline gears 64 have at least ten in flower The first different spline size of another the second spline size in key teeth 64.At least one at least ten inner spline gears 64 It is a that there is the cross sectional shape different from another the cross sectional shape at least ten inner spline gears 64.However, as shown in figure 27, Inner spline gear 64 can have mutually the same shape.Inner spline gear 64 can have mutually the same size.Inner spline gear 64 It can have mutually the same cross sectional shape.
As shown in figure 28, at least one inner spline gear 64 includes internal spline driving surface 66 and the non-driven surface of internal spline 68.At least one inner spline gear 64 includes multiple inner spline gears 64.Multiple inner spline gears 64 include multiple internal spline driving surfaces 66, to receive the driving rotary force F1 for coming from bicycle drive shaft component 12 (Fig. 6) during scrunching.Multiple inner spline gears 64 include Multiple non-driven surfaces 68 of internal spline.Internal spline driving surface 66 and sprocket wheel support ontology 28 are accessible, with will during scrunching Driving rotary force F1 accessary sprocket wheel SP1 is transmitted to sprocket wheel support ontology 28.Internal spline driving surface 66 is towards driving direction of rotation D11.The non-driven surface 68 of internal spline is arranged in the opposite side of circumferential direction D1 of internal spline driving surface 66.The non-drive of internal spline Dynamic surface 68 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.
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.
Internal spline driving surface 66 includes radially outermost edge 66A and radially inner most edge 66B.Internal spline driving surface 66 Radially inner most edge 66B is extended to from radially outermost edge 66A.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 intersects with the non-driven surface 68 of internal spline in reference point 68R. Circumferential maximum width MW2 along circumferential direction D1 from radially inner most edge 66B linear extension 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 is equal to or more than 45mm.The summation of circumferential maximum width MW2 is equal to or more than 50mm.In this embodiment, the summation of circumferential maximum width MW2 is 50.8mm.However, the summation of circumferential maximum width MW2 is not limited to the embodiment.
As shown in figure 29, at least one inner spline gear 64 has internal spline bottom diameter DM21.At least one inner spline gear 64 tool There are internal spline root circle RC22, internal spline root circle RC22 that there is internal spline bottom diameter DM21.However, internal spline root circle RC22 can To have another diameter different from internal spline bottom diameter DM21.Internal spline bottom diameter DM21 is equal to or less than 30mm.Internal spline bottom diameter DM21 is equal to or more than 25mm.Internal spline bottom diameter DM21 is equal to or more than 29mm.In this embodiment, internal spline bottom diameter DM21 is 29.8mm.However, internal spline bottom diameter DM21 is not limited to the embodiment and above range.
There is at least one inner spline gear 64 internal spline top diameter DM22, internal spline top diameter DM22 to be equal to or less than 28mm.It is interior Spline top diameter DM22 is equal to or more than 25mm.Internal spline top diameter DM22 is equal to or more than 27mm.In this embodiment, internal spline top Diameter DM22 is 27.7mm.However, internal spline top diameter DM22 is not limited to the embodiment and above range.
As shown in figure 28, 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.In this embodiment, radical length RL21's is total With for 19.5mm.However, the summation of radical length RL21 is not limited to the 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 27.95mm.However, the summation of additional radical length RL22 It is not limited to the embodiment and above range.
At least one of inner spline gear 64 has about circumferential tooth top center line CL2 asymmetrically shape.Circumferential tooth top Center line CL2 is the circumferential central point CP2 for connecting the radially inner most end 64A of center of rotation axis A1 and inner spline gear 64 Line.However, at least one of inner spline gear 64 can have about the symmetrical shape of circumferential tooth top center line CL2.Internal spline At least one of tooth 64 includes internal spline driving surface 66 and the non-driven surface 68 of internal spline.
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 26).
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 different from the first internal spline surface angle AG21.Flower in first Key table face angle AG21 is less than the second internal spline surface angle AG22.However, the first internal spline surface angle AG21 can be equal to or more than Second internal spline surface angle AG22.
The range of first internal spline surface angle AG21 is 0 degree to 10 degree.The range of second internal spline surface angle AG22 is 0 degree To 60 degree.In this embodiment, the first internal spline surface angle AG21 is 5 degree.Second internal spline surface angle AG22 is 45 degree.So And the 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 30, inner spline gear 64 is engaged with external spline teeth 40, and rotary force F1 accessary sprocket wheel SP1 will be driven to be transmitted to Sprocket wheel supports ontology 28.Internal spline driving surface 66 and external splines driving surface 48 are accessible, rotary force F1 will be driven from chain Wheel SP1 is transmitted to sprocket wheel support ontology 28.It is interior in the state that internal spline driving surface 66 and external splines driving surface 48 contact The non-driven surface 68 of spline is spaced apart with the non-driven surface 50 of external splines.
As shown in figure 31, sprocket wheel SP2 includes multiple inner spline gears 70.Sprocket wheel SP3 includes multiple inner spline gears 72.Sprocket wheel SP4 includes multiple inner spline gears 74.First ring 59A includes multiple inner spline gears 76.As shown in figure 32, the flower of sprocket wheel supporting element 56 Drum joint portion 60 includes multiple inner spline gears 78.Multiple inner spline gears 70 have roughly the same with the structure of multiple inner spline gears 64 Structure.Multiple inner spline gears 72 have the structure same structure with multiple inner spline gears 64.Multiple inner spline gears 74 With the structure same structure with multiple inner spline gears 64.Multiple inner spline gears 76 have and multiple inner spline gears 64 Structure same structure.Multiple inner spline gears 78 have the structure same structure with multiple inner spline gears 64.Cause Them will not be described in detail for simplicity in this here.
As shown in Figure 9 and Figure 10, 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 Figure 26 and Figure 27, sprocket wheel SP1 includes the sprocket wheel instruction for the axial end portion that sprocket body SP1A is arranged in Device SP1I.When along center of rotation axis A1 observation, sprocket wheel indicator SP1I is arranged in second in the region of angular pitch PA22. In this embodiment, sprocket wheel indicator SP1I includes a little.However, sprocket wheel indicator SP1I may include such as triangle and line Other shapes.In addition, sprocket wheel indicator SP1I can be and for example be attached to sprocket wheel SP1's by the integrated structure of such as adhesive Independent component.The position of sprocket wheel indicator SP1I is not limited to the embodiment.Other sprocket wheels can be set in sprocket wheel indicator SP1I Any one of SP2 to SP12.Sprocket wheel supporting element 56 also can be set in sprocket wheel indicator SP1I.
As shown in figure 33, flywheel structure 38 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 34, 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 35, 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 33) 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 figs. 34 and 35, sprocket wheel support ontology 28 includes the peripheral surface with the first helical form spline 28H 28P.First ratchet component 80 be configured to sprocket wheel support ontology 28 engaged in a manner of transmitting torque, and including with the first spiral shell Revolve the second helical form spline 80H of shape spline 28H cooperation.In the driving for the first thrust for supporting ontology 28 to apply by accessary sprocket wheel Period, via the cooperation of the second helical form spline 80H and the first helical form spline 28H, the first ratchet component 80 is in the axial direction D2 is upper to be moveably mounted relative to sprocket wheel support ontology 28.In this embodiment, the first helical form spline 28H includes multiple spiral shells Revolve shape external spline teeth 46.Second helical form spline 80H includes in the multiple helical forms cooperated with multiple helical form external spline teeths 46 Spline tooth 80H1.
As shown in figure 36, 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 is engaged in a manner of transmitting torque with flower-drum ontology 36.Second ratchet component 82 includes flower-drum Body engagement part 82E, flower-drum body engagement part 82E are engaged in a manner of transmitting torque with flower-drum ontology 36, will be rotated Power F1 is transmitted to flower-drum ontology 36 via flower-drum body engagement part 82E from the first ratchet component 80.Flower-drum body engagement part One in 82E and flower-drum ontology 36 include relative to bicycle drive shaft component 12 center of rotation axis A1 radially extend to A few protrusion.Another in flower-drum body engagement part 82E and flower-drum ontology 36 includes engaging at least one protrusion At least one recess portion.In this embodiment, flower-drum body engagement part 82E include radially extended as at least one protrusion to A few protrusion 82T.Flower-drum ontology 36 includes at least one recess portion 36R engaged at least one protrusion 82T.In the embodiment In, flower-drum body engagement part 82E includes multiple protrusion 82T.Multiple protrusion 82T are engaged with multiple recess portion 36R.
As shown in figure 35, sprocket wheel support ontology 28 has the leader 28G being arranged on peripheral surface 28P, in cunning The first ratchet component 80 is guided towards flower-drum ontology 36 between the departure date.Leader 28G is preferably arranged to relative to the first spiral shell It revolves shape spline 28H and limits obtuse angle AG28 (Figure 41).It includes multiple leader 28G that sprocket wheel, which supports ontology 28,.Leader 28G structure Cause slide or coast during the first ratchet component 80 guided towards flower-drum ontology 36.During sliding, guide portion Point 28G guides the first ratchet component 80 towards flower-drum ontology 36, with discharge at least one first hook tooth 80A (Figure 34) with extremely Being engaged between a few second hook tooth 82A.Leader 28G is configured to make the first ratchet component 80 in axial direction D2 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. Leader 28G extends from a tooth at least along circumferential direction D1 in multiple helical form external spline teeths 46.Although in the implementation Leader 28G and helical form external spline teeth 46 are integrally provided as single one-piece integral member in example, but leader 28G can be with It is the component isolated with multiple helical form external spline teeths 46.During sliding, the first ratchet component 80 and the second ratchet component 82 It is smoothly disengaged from each other due to 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 33, bicycle drive shaft component 12 further includes biasing member 84.Biasing member 84 is arranged in flower-drum ontology 36 and first between ratchet component 80, and by the first ratchet component 80, in axial direction D2 is biased towards the second ratchet component 82. In this embodiment, for example, biasing member 84 is compressed spring.
As shown in figure 37, 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 33) 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 33) together with flower-drum ontology 36.
As shown in figure 37, 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.Multiple second hook tooth 82A are arranged in the second ratchet structure Part 82 towards on axial surface 82S.The face towards axial surface 82S towards the first ratchet component 80 of second ratchet component 82 Surface 80S in the axial direction.Axial direction D2 is basically perpendicular to towards axial surface 82S.However, can not towards axial surface 82S Perpendicular to axial direction D2.
As shown in figure 33, bicycle drive shaft component 12 includes spacer 86, supporting member 88, and sliding component 90 adds partially Set component 92 and receiving member 94.However, spacer 86, supporting member 88, sliding component 90, additional bias component 92 and reception At least one of component 94 can be omitted from bicycle drive shaft component 12.
As shown in Figure 37 and Figure 38, 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 38 to Figure 40, 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 39 and Figure 40, 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 Figure 37 and Figure 38, 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 37, 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 drive shaft component 12 operate during noise.In this embodiment, nonmetallic materials packet Include resin material.It substitutes resin material or in addition to resin material, nonmetallic materials may include the material other than resin 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 flower-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 37, 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 drive shaft component 12.In this embodiment, nonmetallic materials include resin material.Substitution tree Rouge material or in addition to resin material, nonmetallic materials may include the material other than resin material.Receiving member 94 includes axis To receiving unit 96 and radial receiving unit 98.Axially receive portion 96 in the axial direction on D2 setting in the first ratchet component 80 and biasing Between component 84.From the portion that axially receives 96, in axial direction D2 extends radial receiving unit 98.The radial setting of receiving unit 98 is biasing 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.So And it axially receives portion 96 and can be the component separated with radial receiving unit 98.
As shown in figure 37, bicycle drive shaft component 12 includes sealing structure 100.The setting of sealing structure 100 is supported in sprocket wheel Between ontology 28 and flower-drum ontology 36.Flower-drum ontology 36 includes inner space 102.Sprocket wheel supports ontology 28, biasing member 84, the Each of one 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 drive shaft component 12 may include the lubricant being arranged in inner space 102.It can be with bicycle drive shaft component 12 Include the case where that the lubricant being arranged in inner space 102 is compared, if being not provided with lubricant, can reduce setting and exist Each gap between component in inner space 102.
Below with reference to the operation of Figure 37, Figure 41 and Figure 42 detailed description bicycle drive shaft component 12.
As shown in figure 37, 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 41, 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 37) via the first ratchet component 80 and the second ratchet component 82 (Figure 37).
As shown in figure 41, 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 37) and the first ratchet component 80.As shown in figure 42, 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 37) the first ratchet component 80 is transmitted to via the second ratchet component 82 (Figure 37).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.
Second embodiment
Bicycle drive shaft component 212 according to the second embodiment is described below with reference to Figure 43 and Figure 44.In addition to flower-drum sheet Except body 36, bicycle drive shaft component 212 has structure identical with bicycle drive shaft component 12 and/or construction.Therefore, with It is identical that there is element in one embodiment the element of essentially identical function will number herein, and for simplicity, here will It is not described in detail and/or illustrates.
As shown in figure 43, bicycle drive shaft component 212 includes flower-drum ontology 236.Flower-drum ontology 236 surrounds bicycle drive shaft The center of rotation axis A1 of component 212 is rotatably installed in flower drum shaft 30.Flower-drum ontology 236 has and first embodiment The substantially the same structure of flower-drum ontology 36.
In this embodiment, flower-drum ontology 236 includes the first spoke installation section 236A and the second spoke installation section 236B.First spoke installation section 236A has the first spoke installation section 36A basically same structure with first embodiment. Second spoke installation section 236B has the second spoke installation section 36B basically same structure with first embodiment.
First spoke installation section 236A includes multiple first attachment hole 36A1 and multiple first recess portion 236A2.Multiple One recess portion 236A2 is arranged on the periphery of the first spoke installation section 236A.Multiple first recess portion 236A2 D1 cloth along circumferential direction It sets.
Second spoke installation section 236B includes multiple second attachment hole 36B1 and multiple second recess portion 236B2.Multiple Two recess portion 236B2 are arranged on the periphery of the second spoke installation section 236B.Multiple second recess portion 236B2 D1 cloth along circumferential direction It sets.
As shown in figure 44, with constant pitch, D1 is arranged multiple first attachment hole 36A1 along circumferential direction.Multiple first recess portions With constant pitch, D1 is arranged 236A2 along circumferential direction.When along center of rotation axis A1 observation, the circumferential direction of the first recess portion 236A2 The circumferential position of position and the first attachment hole 36A1 deviate in circumferential direction D1.First recess portion 236A2 is set on circumferential direction D1 It sets between two adjacent holes of multiple first attachment hole 36A1.
With constant pitch, D1 is arranged multiple second attachment hole 36B1 along circumferential direction.Multiple second recess portion 236B2 are with constant D1 is arranged tooth pitch along circumferential direction.When along center of rotation axis A1 observation, the circumferential position of the second recess portion 236B2 and second attached The circumferential position for meeting hole 36B1 deviates on circumferential direction D1.Second recess portion 236B2 is arranged multiple on circumferential direction D1 Between two adjacent holes of two attachment hole 36B1.
First spoke installation section 236A has first external diameter DM236A.Second spoke installation section 236B has outside second Diameter DM236B.Because flywheel structure 38 need relative to center of rotation axis A1 from the first spoke installation section 236A it is radial to Interior setting, so first external diameter DM236A is greater than second external diameter DM236B.However, first external diameter DM236A can be equal to or less than Second external diameter DM236B.
When along center of rotation axis A1 observation, multiple first attachment hole 36A1 are arranged in the second spoke installation section 236B Radial outside.When along center of rotation axis A1 observation, multiple first attachment hole 36A1 are arranged in multiple second attachment holes The radial outside of 36B1 and multiple second recess portion 236B2.
When along center of rotation axis A1 observation, the week of the circumferential position of the second recess portion 236B2 and the first attachment hole 36A1 It is essentially identical to position.When along center of rotation axis A1 observation, the circumferential position and the second attachment hole of the first recess portion 236A2 The circumferential position of 36B1 is essentially identical.This circumferential position relationship between first recess portion 236A2 and the second attachment hole 36B1 permits Perhaps spoke is easy and is smoothly installed to the second spoke installation section 236B.
Modification
As shown in figure 45, in the above-described embodiments, external spline teeth 40 may include being arranged to spend outside on circumferential direction D1 Slot 40G between key driving surface 48 and the non-driven surface 50 of external splines.Slot 40G reduces bicycle drive shaft component 12 or 212 Weight.
As shown in figure 46, in the above-described embodiments, inner spline gear 64 may include flower including being arranged on circumferential direction D1 Slot 64G between key driving surface 66 and the non-driven surface 68 of internal spline.Slot 64G reduces the weight of bicycle rear sprocket assembly 14 Amount.
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 (62)

1. a kind of bicycle drive shaft component, comprising:
Flower drum shaft；
Flower-drum ontology, the flower-drum ontology are rotatably installed in institute around the center of rotation axis of the bicycle drive shaft component It states in flower drum shaft；
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, sprocket wheel support ontology includes at least ten external spline teeths for being configured to engage with bicycle rear sprocket assembly, it is described extremely Each of few ten external spline teeths have external splines driving surface and the non-driven surface of external splines；With
Flywheel structure, the flywheel structure include:
First ratchet component, first ratchet component include at least one first hook tooth；With
Second ratchet component, second ratchet component include being configured to at least one described first hook tooth to transmit torque At least one second hook tooth for engaging of mode, first ratchet component is configured to and the flower-drum ontology and the sprocket wheel One in support ontology is engaged in a manner of transmitting torque, and second ratchet component is configured to and the flower-drum ontology and institute Another stated in sprocket wheel support ontology is engaged in a manner of transmitting torque, first ratchet component and the second ratchet structure At least one of part moves in the axial direction about the center of rotation axis relative to the flower drum shaft.
2. bicycle drive shaft component according to claim 1, wherein
The sum of at least ten external spline teeth is equal to or more than 20.
3. bicycle drive shaft component according to claim 1, wherein
The sum of at least ten external spline teeth is equal to or more than 25.
4. bicycle drive shaft component according to claim 1, wherein
At least ten external spline teeth has the first outer angular pitch and the second outer tooth pitch different from the described first outer angular pitch Angle.
5. bicycle drive shaft component according to claim 1, wherein
The sprocket wheel support ontology includes the multiple external spline teeths for being configured to engage with the bicycle rear sprocket assembly,
Pivot axle of at least two external spline teeths relative to the bicycle drive shaft component in the multiple external spline teeth Line with the first outer angular pitch circumferentially, and
The range of the first outer angular pitch is 10 degree to 20 degree.
6. bicycle drive shaft component according to claim 5, wherein
The range of the first outer angular pitch is 12 degree to 15 degree.
7. bicycle drive shaft component according to claim 1, wherein
At least one described first hook tooth be arranged in first ratchet component towards on axial surface,
At least one described second hook tooth be arranged in second ratchet component towards on axial surface, and
Second ratchet component towards axial surface towards first ratchet component towards axial surface.
8. bicycle drive shaft component according to claim 1, wherein
The sprocket wheel support ontology includes the peripheral surface with the first helical form spline, and
First ratchet component be configured to the sprocket wheel support ontology engaged in a manner of transmitting torque, and including with institute State the second helical form spline of the first helical form spline fitted.
9. bicycle drive shaft component according to claim 8, wherein
By from the sprocket wheel support ontology apply the first thrust driving period, via the second helical form spline with The cooperation of the first helical form spline, first ratchet component support this relative to the sprocket wheel on the axial direction Body is moveably mounted.
10. bicycle drive shaft component according to claim 1, wherein
At least one described second hook tooth and at least one described first ratchet indented joint, by rotary force from the sprocket wheel branch Support ontology is transferred to the flower-drum ontology.
11. bicycle drive shaft component according to claim 8, wherein
The sprocket wheel support ontology has leader, and the leader is arranged in the peripheral surface, in the phase of sliding Between first ratchet component is guided towards the flower-drum ontology.
12. bicycle drive shaft component according to claim 11, wherein
During sliding, the leader guides first ratchet component towards the flower-drum ontology, described in release Being engaged between at least one first hook tooth and at least one described second hook tooth.
13. bicycle drive shaft component according to claim 11, wherein
The leader at least extends along circumferential direction relative to sprocket wheel support ontology.
14. bicycle drive shaft component according to claim 11, wherein
The leader is arranged to limit obtuse angle relative to the first helical form spline.
15. bicycle drive shaft component according to claim 1, wherein
Second ratchet component includes flower-drum body engagement part, flower-drum body engagement part and the flower-drum ontology with The mode of transmitting torque engages, and rotary force is partially transferred to from first ratchet component via the flower-drum body engagement The flower-drum ontology.
16. bicycle drive shaft component according to claim 15, wherein
One in flower-drum body engagement part and the flower-drum ontology includes at least one protrusion, and described at least one is prominent It rises and is radially extended relative to the center of rotation axis of the bicycle drive shaft component, and
Another in flower-drum body engagement part and the flower-drum ontology includes engaging at least one described protrusion At least one recess portion.
17. bicycle drive shaft component according to claim 1, further includes
Biasing member, the biasing member are arranged between the flower-drum ontology and first ratchet component, by described the One ratchet component is biased along the axial direction towards second ratchet component.
18. bicycle drive shaft component according to claim 11, further includes
Biasing member, the biasing member are arranged between the flower-drum ontology and first ratchet component, by described the One ratchet component is biased along the axial direction towards second ratchet component,
Second ratchet component is engaged in a manner of transmitting torque with the flower-drum ontology,
The biasing member and the flower-drum body engagement, to be rotated together with the flower-drum ontology, and
During sliding, first ratchet component contacts the leader to be detached from second ratchet component, and Rotating friction force is generated between the biasing member and first ratchet component.
19. bicycle drive shaft component according to claim 1, wherein
At least one described first hook tooth includes multiple first hook tooths, and
At least one described second hook tooth includes multiple second hook tooths.
20. bicycle drive shaft component according to claim 1, wherein
Each of first ratchet component and second ratchet component are with annular shape.
21. bicycle drive shaft component according to claim 1, wherein
The sprocket wheel support ontology includes adjacency section, with adjoining second ratchet component, to limit the second ratchet structure Axial movement of the part far from the flower-drum ontology, and
Supporting originally on the axial direction with the sprocket wheel for second ratchet component is arranged in first ratchet component On the opposite axial side in the adjacency section of body.
22. bicycle drive shaft component according to claim 21, further includes
Biasing member, the biasing member are arranged between the flower-drum ontology and first ratchet component, by described the One ratchet component is biased along the axial direction towards second ratchet component.
23. bicycle drive shaft component according to claim 22, wherein
The flower-drum ontology includes inner space,
The peripheral surface of the sprocket wheel support ontology supports first ratchet component and second ratchet component, and
It is each in the sprocket wheel support ontology, the biasing member, first ratchet component and second ratchet component In a inner space for being at least partially disposed on the flower-drum ontology.
24. bicycle drive shaft component according to claim 1, wherein
The flower-drum ontology includes:
First spoke installation section, first spoke installation section have first axis most external；
Second spoke installation section, second spoke installation section are axially outermost with second；With first axis length, institute State the first axis most external that first axis length is limited to first spoke installation section on the axial direction And second spoke installation section described second it is axially outermost between, the first axis length is equal to or more than 55mm。
25. bicycle drive shaft component according to claim 24, wherein
The first axis length is equal to or more than 60mm.
26. bicycle drive shaft component according to claim 24, wherein
The first axis length is equal to or more than 65mm.
27. bicycle drive shaft component according to claim 24, wherein
The flower drum shaft includes:
First axis vehicle frame abutment surface, the first axis vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of cycle frame, abuts against first of the cycle frame along the axial direction；
Second axial vehicle frame abutment surface, the described second axial vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of the cycle frame, abuts against second of the cycle frame along the axial direction；With
Second axial length, second axial length are limited to the first axis vehicle frame adjacency list on the axial direction Between face and the second axial vehicle frame abutment surface, second axial length is equal to or more than 140mm.
28. bicycle drive shaft component according to claim 24, wherein
The flower drum shaft includes:
First axis vehicle frame abutment surface, the first axis vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of cycle frame, abuts against first of the cycle frame along the axial direction；
Second axial vehicle frame abutment surface, the described second axial vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of the cycle frame, abuts against second of the cycle frame along the axial direction；With
Second axial length, second axial length are limited to the first axis vehicle frame adjacency list on the axial direction Between face and the second axial vehicle frame abutment surface, second axial length is equal to or more than 145mm.
29. bicycle drive shaft component according to claim 24, wherein
The flower drum shaft includes:
First axis vehicle frame abutment surface, the first axis vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of cycle frame, abuts against first of the cycle frame along the axial direction；
Second axial vehicle frame abutment surface, the described second axial vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of the cycle frame, abuts against second of the cycle frame along the axial direction；With
Second axial length, second axial length are limited to the first axis vehicle frame adjacency list on the axial direction Between face and the second axial vehicle frame abutment surface, second axial length is equal to or more than 147mm.
30. a kind of bicycle drive shaft component, comprising:
Flower drum shaft；
Flower-drum ontology, the flower-drum ontology are rotatably installed in institute around the center of rotation axis of the bicycle drive shaft component It states in flower drum shaft；
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, sprocket wheel support ontology includes at least one external spline teeth for being configured to engage with bicycle rear sprocket assembly, it is described extremely A few external spline teeth has the external splines top diameter equal to or less than 30mm；With
Flywheel structure, the flywheel structure include:
First ratchet component, first ratchet component include at least one first hook tooth；With
Second ratchet component, second ratchet component include being configured to at least one described first hook tooth to transmit torque At least one second hook tooth for engaging of mode, first ratchet component is configured to and the flower-drum ontology and the sprocket wheel One in support ontology is engaged in a manner of transmitting torque, and second ratchet component is configured to and the flower-drum ontology and institute Another stated in sprocket wheel support ontology is engaged in a manner of transmitting torque, first ratchet component and the second ratchet structure At least one of part moves in the axial direction about the center of rotation axis relative to the flower drum shaft.
31. bicycle drive shaft component according to claim 30, further includes:
Brake rotors support ontology, and the brake rotors support ontology includes being configured to engage at least with bicycle brake rotor One additional external spline teeth, at least one described additional external spline teeth have the additional external splines top greater than external splines top diameter Diameter.
32. bicycle drive shaft component according to claim 30, wherein
External splines top diameter is equal to or more than 25mm.
33. bicycle drive shaft component according to claim 30, wherein
External splines top diameter is equal to or more than 29mm.
34. bicycle drive shaft component according to claim 30, wherein
At least one described external spline teeth has external splines bottom diameter, and
External splines bottom diameter is equal to or less than 28mm.
35. bicycle drive shaft component according to claim 34, wherein
External splines bottom diameter is equal to or more than 25mm.
36. bicycle drive shaft component according to claim 34, wherein
External splines bottom diameter is equal to or more than 27mm.
37. bicycle drive shaft component according to claim 30, wherein
At least one described external spline teeth includes multiple external spline teeths, and the multiple external spline teeth includes multiple external splines driving tables Face, to receive the driving rotary force from the bicycle rear sprocket assembly during scrunching,
The multiple external splines driving surface includes:
Radially outermost edge；
Radially inner most edge；With
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 external splines driving surface is equal to or more than 7mm.
38. the bicycle drive shaft component according to claim 37, wherein
The summation of the radical length is equal to or more than 10mm.
39. the bicycle drive shaft component according to claim 37, wherein
The summation of the radical length is equal to or more than 15mm.
40. bicycle drive shaft component according to claim 30, wherein
At least one described first hook tooth be arranged in first ratchet component towards on axial surface,
At least one described second hook tooth be arranged in second ratchet component towards on axial surface, and
Second ratchet component towards axial surface towards first ratchet component towards axial surface.
41. bicycle drive shaft component according to claim 30, wherein
The sprocket wheel support ontology includes the peripheral surface with the first helical form spline, and
First ratchet component be configured to the sprocket wheel support ontology engaged in a manner of transmitting torque, and including with institute State the second helical form spline of the first helical form spline fitted.
42. bicycle drive shaft component according to claim 41, wherein
By from the sprocket wheel support ontology apply the first thrust driving period, via the second helical form spline with The cooperation of the first helical form spline, first ratchet component support this relative to the sprocket wheel on the axial direction Body is moveably mounted.
43. bicycle drive shaft component according to claim 30, wherein
At least one described second hook tooth and at least one described first ratchet indented joint, by rotary force from the sprocket wheel branch Support ontology is transferred to the flower-drum ontology.
44. bicycle drive shaft component according to claim 41, wherein
The sprocket wheel support ontology has leader, and the leader is arranged in the peripheral surface, in the phase of sliding Between first ratchet component is guided towards the flower-drum ontology.
45. bicycle drive shaft component according to claim 44, wherein
During sliding, the leader guides first ratchet component towards the flower-drum ontology, described in release Being engaged between at least one first hook tooth and at least one described second hook tooth.
46. bicycle drive shaft component according to claim 44, wherein
The leader at least extends along circumferential direction relative to sprocket wheel support ontology.
47. bicycle drive shaft component according to claim 44, wherein
The leader is arranged to limit obtuse angle relative to the first helical form spline.
48. bicycle drive shaft component according to claim 30, wherein
Second ratchet component includes flower-drum body engagement part, flower-drum body engagement part and the flower-drum ontology with The mode of transmitting torque engages, and rotary force is partially transferred to from first ratchet component via the flower-drum body engagement The flower-drum ontology.
49. bicycle drive shaft component according to claim 48, wherein
One in flower-drum body engagement part and the flower-drum ontology includes at least one protrusion, and described at least one is prominent It rises and is radially extended relative to the center of rotation axis of the bicycle drive shaft component, and
Another in flower-drum body engagement part and the flower-drum ontology includes engaging at least one described protrusion At least one recess portion.
50. bicycle drive shaft component according to claim 30, further includes
Biasing member, the biasing member are arranged between the flower-drum ontology and first ratchet component, by described the One ratchet component is biased along the axial direction towards second ratchet component.
51. bicycle drive shaft component according to claim 44, further includes
Biasing member, the biasing member are arranged between the flower-drum ontology and first ratchet component, by described the One ratchet component is biased along the axial direction towards second ratchet component,
Second ratchet component is engaged in a manner of transmitting torque with the flower-drum ontology,
The biasing member and the flower-drum body engagement, to be rotated together with the flower-drum ontology, and
During sliding, first ratchet component contacts the leader to be detached from second ratchet component, and Rotating friction force is generated between the biasing member and first ratchet component.
52. bicycle drive shaft component according to claim 30, wherein
At least one described first hook tooth includes multiple first hook tooths, and
At least one described second hook tooth includes multiple second hook tooths.
53. bicycle drive shaft component according to claim 30, wherein
Each of first ratchet component and second ratchet component are with annular shape.
54. bicycle drive shaft component according to claim 30, wherein
The sprocket wheel support ontology includes adjacency section, with adjoining second ratchet component, to limit the second ratchet structure Axial movement of the part far from the flower-drum ontology, and
Supporting originally on the axial direction with the sprocket wheel for second ratchet component is arranged in first ratchet component On the opposite axial side in the adjacency section of body.
55. bicycle drive shaft component according to claim 54, further includes
Biasing member, the biasing member are arranged between the flower-drum ontology and first ratchet component, by described the One ratchet component is biased along the axial direction towards second ratchet component.
56. bicycle drive shaft component according to claim 55, wherein
The flower-drum ontology includes inner space,
The peripheral surface of the sprocket wheel support ontology supports first ratchet component and second ratchet component, and
It is each in the sprocket wheel support ontology, the biasing member, first ratchet component and second ratchet component In a inner space for being at least partially disposed on the flower-drum ontology.
57. bicycle drive shaft component according to claim 30, wherein
The flower-drum ontology includes:
First spoke installation section, first spoke installation section have first axis most external；
Second spoke installation section, second spoke installation section are axially outermost with second；With
First axis length, the first axis length are limited to first spoke installation section on the axial direction Between described the second of the first axis most external and second spoke installation section is axially outermost, the first axis Length is equal to or more than 55mm.
58. bicycle drive shaft component according to claim 57, wherein
The first axis length is equal to or more than 60mm.
59. bicycle drive shaft component according to claim 57, wherein
The first axis length is equal to or more than 65mm.
60. bicycle drive shaft component according to claim 57, wherein
The flower drum shaft includes:
First axis vehicle frame abutment surface, the first axis vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of cycle frame, abuts against first of the cycle frame along the axial direction；
Second axial vehicle frame abutment surface, the described second axial vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of the cycle frame, abuts against second of the cycle frame along the axial direction；With
Second axial length, second axial length are limited to the first axis vehicle frame adjacency list on the axial direction Between face and the second axial vehicle frame abutment surface, second axial length is equal to or more than 140mm.
61. bicycle drive shaft component according to claim 57, wherein
The flower drum shaft includes:
First axis vehicle frame abutment surface, the first axis vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of cycle frame, abuts against first of the cycle frame along the axial direction；
Second axial vehicle frame abutment surface, the described second axial vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of the cycle frame, abuts against second of the cycle frame along the axial direction；With
Second axial length, second axial length are limited to the first axis vehicle frame adjacency list on the axial direction Between face and the second axial vehicle frame abutment surface, second axial length is equal to or more than 145mm.
62. bicycle drive shaft component according to claim 57, wherein
The flower drum shaft includes:
First axis vehicle frame abutment surface, the first axis vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of cycle frame, abuts against first of the cycle frame along the axial direction；
Second axial vehicle frame abutment surface, the described second axial vehicle frame abutment surface are configured to pacify in the bicycle drive shaft component It is attached in the state of the cycle frame, abuts against second of the cycle frame along the axial direction；With
Second axial length, second axial length are limited to the first axis vehicle frame adjacency list on the axial direction Between face and the second axial vehicle frame abutment surface, second axial length is equal to or more than 147mm.
CN201810446965.1A 2017-05-30 2018-05-11 Bicycle hub assembly Active CN108973521B (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US15/608,915 US11059541B2 (en) 2017-05-30 2017-05-30 Bicycle hub assembly
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 2017-05-30
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
US15/686,177 US11179967B2 (en) 2017-05-30 2017-08-25 Bicycle hub assembly
US15/686,179 2017-08-25
US15/686,179 US11220309B2 (en) 2017-05-30 2017-08-25 Bicycle rear sprocket assembly

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CN202110266875.6A Active CN113060240B (en) 2017-05-30 2018-05-11 Bicycle rear chain wheel assembly
CN201810446975.5A Active CN108974235B (en) 2017-05-30 2018-05-11 Bicycle rear sprocket assembly
CN202010157661.0A Active CN111469972B (en) 2017-05-30 2018-05-11 Bicycle rear sprocket assembly
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CN201810446975.5A Active CN108974235B (en) 2017-05-30 2018-05-11 Bicycle rear sprocket assembly
CN202010157661.0A Active CN111469972B (en) 2017-05-30 2018-05-11 Bicycle rear sprocket assembly

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TW202118691A (en) 2021-05-16
CN111469972B (en) 2023-02-17
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TWI795653B (en) 2023-03-11
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DE102018008586A1 (en) 2018-12-27
CN113060240A (en) 2021-07-02
CN108974235B (en) 2021-03-09
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DE102018111278A1 (en) 2018-12-06
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JP6642934B2 (en) 2020-02-12
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