CN102963485B - Hub for rear wheel of bicycle - Google Patents

Hub for rear wheel of bicycle Download PDF

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Publication number
CN102963485B
CN102963485B CN201210288306.2A CN201210288306A CN102963485B CN 102963485 B CN102963485 B CN 102963485B CN 201210288306 A CN201210288306 A CN 201210288306A CN 102963485 B CN102963485 B CN 102963485B
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China
Prior art keywords
mentioned
hub
sensor
opposing part
bicycle
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Application number
CN201210288306.2A
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Chinese (zh)
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CN102963485A (en
Inventor
北村智
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Shimano Inc
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Shimano Inc
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Publication date
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Publication of CN102963485A publication Critical patent/CN102963485A/en
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Publication of CN102963485B publication Critical patent/CN102963485B/en
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
    • G01L3/102—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving magnetostrictive means
    • 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
    • B60B27/0068—Hubs characterised by functional integration of other elements the element being a sensor
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
    • G01L3/242—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity by measuring and simultaneously multiplying torque and velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/50—Improvement of
    • B60B2900/531—User-friendliness

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The invention provides a hub for a rear wheel of a bicycle. The hub is capable of measuring driving force and is hardly affected by assembly precision. The hub (10) for the rear wheel has a hub shaft (20), a drive portion (22), a hub housing (24), a first opposite portion (54), a second opposite portion (56) and a driving force measuring portion (26). The drive portion (22) is freely supported on the hub shaft (20) in a rotary manner and is capable of mounting a sprocket assembly (80). The hub housing (24) is freely supported on the hub shaft (20) in a rotary manner and rotation of the drive portion (22) is transmitted onto the hub housing (24). The first opposite portion (54) is disposed on the drive portion (22). The second opposite portion (56) is arranged on the hub housing (24). The driving force measuring portion (26) is provided with a sensor (58) which is capable of measuring intervals between the first opposite portion and the second opposite portion (56) or displacement of the intervals.

Description

Rear hub for bicycle
Technical field
The present invention relates to wheel hub, particularly form the rear hub for bicycle of the wheel hub of the trailing wheel of bicycle.
Background technology
Rear hub for bicycle possess the hub spindle of the centre of gration being configured at trailing wheel, the hub shell rotatably installed around hub spindle and with hub shell at the axial adjacent free gear configured.The rotation of the sprocket wheel engaged with chain is passed to hub shell by free gear.There will be a known a kind of rear hub for bicycle, it configures the propulsive effort determination part (for example, referring to patent documentation 1) that can measure the propulsive effort of rider between this free gear and hub shell in the past.
Rear hub for bicycle in the past has connecting member free gear and hub shell linked.Connecting member is formed as drum, and at one end sprocket wheel is installed in portion, and the other end and hub shell link.Connecting member being provided with the strain gauge of the distortion for detecting this connecting part, detecting the twist angle of connecting part.According to the twist angle that this measures, measure the propulsive effort of rider.
Look-ahead technique document
Patent documentation
Patent documentation 1: US Patent No. 6418797 specification sheets
Summary of the invention
Invent problem to be solved
For rear-wheel hub in the past, strain gauge is directly pasted onto on connecting part, such as, needs the thickness of the lining cement making stickup even, therefore be difficult to assemble accurately.
Problem of the present invention is to provide can measure propulsive effort and the rear hub for bicycle being difficult to be subject to the impact of assembly precision.
For solving the means of problem
The rear hub for bicycle of invention involved by 1, possesses hub spindle, drive division, hub shell, at least one first opposing part, at least one second opposing part and propulsive effort measurement section.Drive division is rotatably freely supported on hub spindle, and can install drive transfer part.Hub shell is rotatably freely supported on hub spindle, and is passed the rotation of drive division.At least one first opposing part is located at drive division.At least one second opposing part is located at hub shell and can be opened compartment of terrain in opposite directions with the first opposing part sky.Propulsive effort measurement section has at least one sensor, and this sensor can be measured the first opposing part and the interval of the second opposing part or the displacement at interval.
In this rear hub for bicycle, when the rotation of drive division is passed to hub shell, the interval of the first opposing part being located at drive division and the second opposing part being located at hub shell changes according to the propulsive effort transmitted (torque).The change at the interval of the first opposing part and the second opposing part or the interval of the first opposing part and the second opposing part can be detected by sensor.At this, due to the displacement at the relative interval or interval of being detected the first opposing part and the second opposing part by sensor, so, can suppress, because sensor assembling mode is on the impact of measurement result, the impact being subject to assembly precision can be difficult to.
The rear hub for bicycle of invention involved by 2, in the rear hub for bicycle described in invention 1, the first opposing part and the second opposing part on the hand of rotation of drive division and hub shell in opposite directions.Thus, when from drive division to hub shell transmission of drive force, drive division is relative to hub shell distortion, and the first opposing part corresponds to propulsive effort and close to the second opposing part.For this reason, propulsive effort can be detected accurately.
The rear hub for bicycle of invention involved by 3, in the rear hub for bicycle described in invention 1 or 2, the first opposing part is given prominence to from the peripheral part of drive division.In this case, because the first opposing part is close to hub shell, so, easily make the first opposing part and be located at the second opposing part of hub shell in opposite directions.
The rear hub for bicycle of invention involved by 4, in the rear hub for bicycle described in any one in invention 1 to 3, the second opposing part is given prominence to from the inner peripheral portion of hub shell.In this case, because the second opposing part is close to drive division, so, easily make the first opposing part and the second opposing part in opposite directions.
The rear hub for bicycle of invention involved by 5, in the rear hub for bicycle described in any one in invention 1 to 4, drive division has the connecting part linked with hub shell.
The rear hub for bicycle of invention involved by 6, in the rear hub for bicycle described in invention 5, connecting part and the first opposing part are arranged integratedly.In this case, because connecting part and the first opposing part are arranged integratedly, so the formation of drive division is simple.
The rear hub for bicycle of invention involved by 7, in the rear hub for bicycle described in invention 5, connecting part and first-phase are arranged to part body.In this case, the degree of freedom of the shape of connecting part uprises, and easily at random sets the rigidity of connecting part.Such as, by setting lower than the other parts of drive division by the rigidity of connecting part, the displacement at the interval of the first opposing part and the second opposing part can be strengthened.Thereby, it is possible to improve the output of sensor relative to propulsive effort.
The rear hub for bicycle of invention involved by 8, in the rear hub for bicycle described in invention 7, connecting part is formed as ring-type, and is formed in the axially extended multiple hole run through of wheel hub.In this case, according to the shape of through hole, the rigidity of connecting part at random can be set.
The rear hub for bicycle of invention involved by 9, in the rear hub for bicycle described in any one in invention 5 to 8, connecting part and hub shell are by serration spline or bonding and combine.In this case, the connecting structure of hub shell and connecting part becomes simple.
The rear hub for bicycle of invention involved by 10, in the rear hub for bicycle described in any one in invention 5 to 9, connecting part and hub shell hub shell hub spindle to central portion link.In this case, the axial length of the hub spindle of connecting part is elongated, thus, and the easy distortion of connecting part, and, the left and right distortion in hub shell can be suppressed.
The rear hub for bicycle of invention involved by 11, in the rear hub for bicycle described in any one in invention 1 to 10, the first opposing part and the second opposing part are provided with many groups.Thereby, it is possible in multiple location detection first opposing part and the interval of the second opposing part or the displacement at interval, thus, accuracy of detection is improved.
The rear hub for bicycle of invention involved by 12, in the rear hub for bicycle described in invention 1 or 2, at least any one party in many groups the first opposing part and the second opposing part arranges sensor.In this case, sensor can be set according to any one party of the type of sensor in the first opposing part and the second opposing part or two sides.
The rear hub for bicycle of invention involved by 13, in the rear hub for bicycle described in invention 12, multiple sensor is located at the first opposing part.
The rear hub for bicycle of invention involved by 14, in the rear hub for bicycle described in invention 12, multiple sensor is located at the second opposing part.
The rear hub for bicycle of invention involved by 15, in the rear hub for bicycle described in invention 12, among many groups the first opposing part and the second opposing part, at least any one group, sensor is set at the first opposing part, at least any one group, sensor is set at the second opposing part.
The rear hub for bicycle of invention involved by 16, in the rear hub for bicycle described in any one in invention 11 to 15, multiple sensor is the sensor of eddy current type.In this case, high frequency magnetic field can be utilized to measure the displacement at interval or interval.
The rear hub for bicycle of invention involved by 17, in the rear hub for bicycle described in any one in invention 11 to 15, multiple sensor is the sensor of electrostatic capacity type.In this case, cond is set at the first opposing part and the second opposing part, the displacement at assay intervals or interval can be carried out according to the displacement of electrostatic capacity.
The rear hub for bicycle of invention involved by 18, in the rear hub for bicycle described in invention 17, the sensor of electrostatic capacity type has cond.
The rear hub for bicycle of invention involved by 19, in the rear hub for bicycle described in any one in invention 11 to 15, multiple sensor is the sensor of optical profile type.In this case, the displacement at assay intervals or interval can be carried out according to the phase difference of the irradiation light of laser etc. and reflected light.
The rear hub for bicycle of invention involved by 20, in the rear hub for bicycle described in any one in invention 11 to 15, sensor is the sensor with coil.In this case, by electromagnetic induction effect, the impedance of coil is changed, thus can the displacement at assay intervals or interval.
The rear hub for bicycle of invention involved by 21, in the rear hub for bicycle described in any one in invention 11 to 20, multiple sensor series connects.In this case, due to without the need to arranging the signal processing circuit detected the signal from multiple sensor respectively, so, can formation be simplified, can current sinking be reduced.In addition, the error being configured in the output of the multiple sensors on diverse location is cancelled, thus, and can the displacement at assay intervals or interval accurately.
The rear hub for bicycle of invention involved by 22, in the rear hub for bicycle described in any one in invention 11 to 20, multiple sensor parallel connects.In this case, due to without the need to arranging the signal processing circuit detected the signal from multiple sensor respectively, so, can formation be simplified, can current sinking be reduced.In addition, the output being configured in the multiple sensors on diverse location is cancelled, thus, and can the displacement at assay intervals or interval accurately.
The rear hub for bicycle of invention involved by 23, in the rear hub for bicycle described in any one in invention 11 to 22, also possess wireless transmission part, the information of sensor-based output is wirelessly sent to outside by this wireless transmission part.Even if such as sensor rotates with hub shell, also easy output is fetched into outside.
The rear hub for bicycle of invention involved by 24, in the rear hub for bicycle described in any one in invention 1 to 23, also possesses the power supply to sensor supply electric power.In this case, owing to arranging power supply, thus without the need to rear-wheel hub split power supply is set.
The rear hub for bicycle of invention involved by 25, in the rear hub for bicycle described in invention 24, power supply is battery.In this case, the formation of power supply becomes simple.
The rear hub for bicycle of invention involved by 26, in the rear hub for bicycle described in invention 24, power supply is electrical generator.In this case, owing to generating electricity when bicycle running, thus, without the need to carrying out charging or the replacing of battery.
The rear hub for bicycle of invention involved by 27 possesses hub spindle, drive division, hub shell and propulsive effort measurement section.Drive division is rotatably freely supported on hub spindle, and can install drive transfer part.Hub shell is rotatably freely supported on hub spindle, and is passed the rotation of drive division.Propulsive effort measurement section can be measured from drive division to the propulsive effort of hub shell transmission.Drive division has: outside cylindrical portion, and outside this, cylindrical portion installs drive transfer part; Inner side cylindrical portion, inside this, cylindrical portion is configured in the inner side of outside cylindrical portion; And measured portion, this measured portion and inner side cylindrical portion form as one.
In this rear hub for bicycle, when the rotation of drive division is passed to hub shell, the measured portion being located at drive division corresponds to the propulsive effort (torque) and distortion that transmit.This distortion can be measured by propulsive effort measurement section.By inner side cylindrical portion and measured portion are formed integratedly, with split form inner side cylindrical portion compare with the situation in measured portion, the interference that propulsive effort determination part is measured can be reduced, be difficult to the deviation of the distortion producing tested bonding part and estimating precision can be improved, can also gravity be alleviated in addition.
The rear hub for bicycle of invention involved by 28, in the rear hub for bicycle described in invention 27, inner side cylindrical portion and outside cylindrical portion form free-wheel clutch.In this case, the rotation (such as, the rotation of the direct of travel of bicycle) in a direction of outside cylindrical portion is only had to pass to inner side cylindrical portion.
The rear hub for bicycle of invention involved by 29, in the rear hub for bicycle described in invention 27 or 28, drive division also has the connecting part linked with hub shell.The inner side of connecting part and hub shell links.In this case, regardless of the outer shape of rear-wheel hub, drive division and hub shell can both be linked, maintain the degree of freedom of the design of the outer shape of rear-wheel hub.
The rear hub for bicycle of invention involved by 30, in the rear hub for bicycle described in invention 29, the centre portion of the axis of connecting part and hub shell links.In this case, the pars intermedia of the axis of connecting part and hub shell links, and thus, the weight of rear-wheel hub can be suppressed to increase.
The rear hub for bicycle of invention involved by 31, in the rear hub for bicycle described in invention 29 or 30, arranges measured portion between connecting part and inner side cylindrical portion.In this case, between the connecting part and inner side cylindrical portion of hub shell, arrange measured portion, thus, measured portion is easily out of shape.
The rear hub for bicycle of invention involved by 32, in the rear hub for bicycle described in any one in invention 29 to 31, propulsive effort measurement section is configured in the inner side of hub shell.
The rear hub for bicycle of invention involved by 33, in the rear hub for bicycle described in any one in invention 29 to 32, connecting part is threaded into and is fixed on hub shell.In this case, the formation that connecting part and hub shell link is become simple.
The rear hub for bicycle of invention involved by 34, in the rear hub for bicycle described in any one in invention 29 to 33, propulsive effort measurement section has at least one strain gauge.In this case, measured the distortion in measured portion by strain gauge, thus, even if also propulsive effort can be detected accurately for small distortion.
The rear hub for bicycle of invention involved by 35, in the rear hub for bicycle described in any one in invention 29 to 33, propulsive effort measurement section has: magnetostriction element, and this magnetostriction element is configured in the outer peripheral face in measured portion; And magnetic test coil, this magnetic test coil and magnetostriction element are configured in the inner peripheral surface of hub shell opposite to each other.In this case, propulsive effort can be detected by magnetostriction element, thus, even if also more precisely propulsive effort can be measured for small distortion.
The effect of invention
According to the present invention, due to propulsive effort can be detected according to the first opposing part and the interval of the second opposing part or the change at interval, so, can suppress, because sensor assembling mode is on the impact of measurement result, the impact being subject to assembly precision can be difficult to.
Accompanying drawing explanation
Fig. 1 is the half cutaway view of the rear hub for bicycle relying on the first embodiment of the present invention.
Fig. 2 is the main portion cutaway view of the rear hub for bicycle of Fig. 1.
Fig. 3 is the cutaway view watched from the cutting line III-III of Fig. 1.
Fig. 4 is the cutaway view watched from the cutting line IV-IV of Fig. 1.
Fig. 5 is the figure suitable with Fig. 2 of the second embodiment.
Fig. 6 is the cutaway view watched from the cutting line VI-VI of Fig. 5.
Fig. 7 is the figure suitable with Fig. 4 of the 3rd embodiment.
Fig. 8 is the figure of the connection form of the multiple sensors representing the 3rd embodiment and an example of signal processing circuit.
Fig. 9 is the figure suitable with Fig. 8 of the modified example of the 3rd embodiment.
Figure 10 is the figure suitable with Fig. 2 of the 4th embodiment.
Figure 11 is the figure suitable with Fig. 4 of the 4th embodiment.
Figure 12 is the birds-eye view that make use of the sensor of coil representing the 4th embodiment.
Figure 13 is the block scheme of the coupled condition of the coil representing the 4th embodiment.
Figure 14 is the figure suitable with Figure 13 of the modified example of the 4th embodiment.
Figure 15 is the figure suitable with Fig. 4 of the modified example of the 4th embodiment.
Figure 16 is the half cutaway view of the rear hub for bicycle of dependence the 5th embodiment.
Figure 17 is the main portion cutaway view of the rear hub for bicycle of Figure 16.
Figure 18 is the figure suitable with Figure 17 of the modified example of the 5th embodiment.
Figure 19 is the figure suitable with Figure 17 of the 6th embodiment.
Detailed description of the invention
< first embodiment >
As shown in Figure 1, rely on the rear hub for bicycle 10 of the first embodiment of the present invention to be arranged on to be located on the hub spindle installation portion 102 at bicycle frame rear portion.Rear-wheel hub 10 possesses hub spindle 20, drive division 22, hub shell 24, propulsive effort measurement section 26 and wireless transmission part 28.Hub shell 24 is rotatably freely supported on hub spindle 20 by clutch shaft bearing 46.Drive division 22 is rotatably freely supported on hub spindle 20 by the second bearing 47.Propulsive effort measurement section 26 can measure the propulsive effort of rider.The relevant information wireless transmission of the propulsive effort be measured to is gone out by wireless transmission part 28.The relevant information of the propulsive effort be sent wirelessly is presented at and such as can be installed in the not shown code table in portion of bicycle handle bar.In addition, in code table, also show the information of rotative speed (step on frequently), operating range etc. of the speed of bicycle, crank.
< hub spindle >
Hub spindle 20 has: the axle body 30 installing the hollow of Quick-disassembling mechanism 29; Be arranged on the first lock nut 32 of the first end (end in the left side of Fig. 2) of axle body 30; Be arranged on the second lock nut 34 of the second end (end on the right side of Fig. 2) of axle body 30.In the first lock nut 32 and the second lock nut 34, hub spindle installation portion 102 can be installed.At this, although describe the formation that the first lock nut 32 and the second lock nut 34 are installed on hub spindle installation portion 102, axle body 30 also can be configured to be arranged on the hub spindle installation portion 102 of framework.
As shown in Figure 2, at the inner peripheral surface of the first end of axle body 30, form female threaded portion 30a.First of axle body 30 and the outer peripheral face of the second end, form the first outer screw section 30b and the second outer screw section 30c respectively.First lock nut 32 has the outer screw section be threadedly engaged with female threaded portion 30a, is threaded into and fixes to axle body 30.Second lock nut 34 has the female threaded portion be threadedly engaged with the second outer screw section 30c, is threaded into and fixes to axle body 30.
< drive division >
Drive division 22 is configured to comprise the parts being called as so-called free gear.Drive division 22 has: the first component 40 being rotatably freely supported on hub spindle 20; Be configured in the second component 42 of the outer circumferential side of first component 40; Be configured in the free-wheel clutch 44 between first component 40 and second component 42; Connecting part 52.
First component 40 is the parts being rotatably freely supported on the tubular of hub spindle 20 by the second bearing 47.Second bearing 47 has the second inner ring body 47a, the second outer ring body 47b and multiple second rolling body 47c.Second inner ring body 47a forms screw thread at peripheral part, and the second outer screw section 30c to axle body 30 is threaded into and fixes.Second outer ring body 47b forms screw thread in inner peripheral portion, and the outer screw section to the outer peripheral face being formed at first component 40 is threaded into and fixes.Multiple second rolling body 47c is located between the second inner ring body 47a and the second outer ring body 47b in circumferentially spaced compartment of terrain.Second rolling body 47c is rotatably held in not shown retainer, configures at circumferentially spaced predetermined distance.Second rolling body 47c both can be spheroid, also can be roller.
First component 40 has first portion 40b of the recess 40a of the clutch claw 44a possessing storage free-wheel clutch 44.The first end (end in the left side of Fig. 2) of first component 40 extends to the inner circumferential side of hub shell 24.First component 40 has the diameter second tin portion 40c larger than first portion 40b and the diameter three tin portion 40d larger than second portion 40c in order in the first end side (on the left of Fig. 2) of first portion 40b.The second outer ring body 47b of the second bearing 47 is fixed at the second end (end on the right side of Fig. 2) of first portion 40b.At the outer peripheral face of the junction section of first portion 40b and second portion 40c, be formed with the 3rd inner ring face 48a of formation the 3rd bearing 48.At the outer peripheral face of second portion 40c, be formed with the first serration spline part 40e linking connecting part 52.At the outer peripheral face of the 3rd portion 40d, be formed with the 5th inner ring face 50a of the 5th bearing 50 for hub shell 24 being rotatably freely supported on drive division 22.
Second component 42 is the cartridges being rotatably freely supported on first component 40 by the 3rd bearing 48 and the 4th bearing 49.3rd bearing 48 is formed by aforesaid 3rd inner ring face 48a, the 3rd face, outer ring 48b and multiple 3rd rolling body 48c.3rd face, outer ring 48b is formed in the inner peripheral surface of the first end (end in the left side of Fig. 2) of second component 42.Multiple 3rd rolling body 48c is located between the 3rd inner ring face 48a and the 3rd face, outer ring 48b in circumferentially spaced compartment of terrain.3rd rolling body 48c can be held in not shown retainer rotatably, configures at circumferentially spaced predetermined distance.3rd rolling body 48c both can be spheroid, also can be roller.
4th bearing 49 is formed by the 4th inner ring face 49a, the 4th face, the outer ring 49b of outer peripheral face and multiple 4th rolling body 49c being formed in the second outer ring body 47b.The hub spindle that 4th face, outer ring 49b is formed in second component 42 to the inner peripheral surface of pars intermedia.Multiple 4th rolling body 49c is located between the 4th inner ring face 49a and the 4th face, outer ring 49b in circumferentially spaced compartment of terrain.4th rolling body 49c can be held in not shown retainer rotatably, configures at circumferentially spaced predetermined distance.4th rolling body 49c both can be spheroid, also can be roller.
Second component 42 as shown in Figure 1, has the sprocket wheel installation portion 42a installing sprocket wheel complex 80 at outer peripheral face.Sprocket wheel complex 80 and second component 42 rotate integratedly.Sprocket wheel complex 80 is examples for drive transfer part.Sprocket wheel installation portion 42a such as has the spline of protuberance or the recess be provided with in the configuration of circumferentially spaced compartment of terrain at peripheral part.Sprocket wheel complex 80 has the sprocket wheel 80a ~ 80i of the number of teeth different multiple (such as 9) as shown in Figure 1.By the chain 81 of any sprocket engagement with sprocket wheel complex 80, the rotation of not shown crank is passed to drive division 22.At this, at sprocket wheel installation portion 42a, multiple sprocket wheel is installed, but the quantity being installed on the sprocket wheel of sprocket wheel installation portion 42a also can be one.
Free-wheel clutch 44 is arranged in order to only the rotation of the direct of travel of the bicycle of second component 42 to be transmitted to first component 40.Thus, only the rotation of the direct of travel of crank is passed to hub shell 24.In addition, the rotation of the direct of travel of hub shell 24 is not transmitted to second component 42.Free-wheel clutch 44 has: be located at recess 40a clutch claw 44a with swinging into prime and second freely; Be formed at the hook tooth 44b of the inner peripheral surface of second component 42; To the force application part 44c that clutch claw 44a exerts a force.Clutch claw 44a contacts with hook tooth 44b with prime, departs from from hook tooth 44b with second.Force application part 44c is arranged in the endless groove being formed at first component 40.Force application part 44c is the spring members formed by metal wire rod is bent to C-shaped, is exerted a force by clutch claw 44a towards prime side.
Connecting part 52 is located at the propulsive effort bang path from drive division 22 to hub shell 24.In this embodiment, connecting part 52, at the second end (end on the right side of Fig. 2) of hub shell 24, is located between the inner peripheral portion of hub shell 24 and first component 40.The bearing support 24d that connecting part 52 compares hub shell 24 described later is located at the second end side of hub shell 24, adjoins with bearing support 24d.Connecting part 52 is circular parts as shown in Figure 3, has the second serration spline part 52a engaged with the first serration spline part 40e of first component 40 in inner peripheral portion.Connecting part 52 has the 4th serration spline part 52b engaged with the 3rd serration spline part 24c of hub shell 24 at outer peripheral face.Connecting part 52 has the multiple hole 52c formed every ground at the empty standard width of a room in an old-style house of circumference.Hole 52c at hub spindle to running through connecting part.Hole 52c is formed as elongated hole, and its length direction carries in circumference.This hole 52c make the rigidity of connecting part 52 become than drive division 22 and hub shell 24 low, be arranged in order to when from drive division 22 to hub shell 24 transmission of drive force (torque), easily make connecting part 52 correspond to propulsive effort and carry out distortion.
< hub shell >
Hub shell 24 is can in the structure of axially segmentation.As shown in Figure 2, first end (end in the left side of Fig. 2) is rotatably freely supported on the axle body 30 of hub spindle 20 to hub shell 24 by clutch shaft bearing 46.The second end (end on the right side of Fig. 2) of hub shell is rotatably freely supported on the axle body 30 of hub spindle 20 by the 5th bearing 50 as described above via drive division 22.At the second end of hub shell 24, be provided with the bearing support 24d of the 5th outer ring body 50b of installation the 5th bearing 50.Bearing support 24d is outstanding to hub spindle 20 side in the inner peripheral portion of hub shell 24.Bearing support 24d is formed as ring-type.Clutch shaft bearing 46 has: form screw thread at inner peripheral surface and be fixed on the first inner ring body 46a of the first outer screw section 30b of axle body 30 with being threaded into; First outer ring body 46b; Multiple first rolling body 46c.First rolling body 46c is rotatably held in not shown retainer, configures with opening predetermined distance at circumferential sky.First rolling body 46c both can be spheroid, also can be roller.
5th bearing 50 has: aforesaid 5th inner ring face 50a; Such as press-in is fixed on the 5th outer ring body 50b of the inner peripheral portion of the second end of hub shell 24; Multiple 5th rolling body 50c.5th rolling body 50c is circumferentially configured between the 5th inner ring face 50a and the 5th outer ring body 50b at spaced intervals.5th rolling body 50c is rotatably held in not shown retainer, and circumferentially sky configures with opening predetermined distance.5th rolling body 50c both can be spheroid, also can be roller.
At the outer peripheral face of hub shell 24, give prominence to first wheel flange 24a and the second hub flange 24b of the spoke of the trailing wheel be formed with for linking bicycle in the form of a ring in the axially-spaced compartment of terrain of hub spindle 20.At the inner peripheral surface of the first end (end on the right side of Fig. 2) of hub shell 24, be formed with the second serration spline recess 24c engaged with the outer peripheral face of connecting part 52.In first side of the second serration spline recess 24c, be formed with the wall part 24d of the ring-type for installing the 5th bearing 50.
< first opposing part >
First opposing part 54 is located at the first end of the first component 40 of drive division 22.First opposing part 54 is given prominence to outward from the peripheral part of first component 40, projecting from the peripheral part of the 3rd portion 40d at this.First opposing part 54 has the arm 54a that the inner peripheral surface from the peripheral part of the 3rd portion 40d towards hub shell 24 extends.In addition, as long as the first opposing part 54 at least one.First opposing part 54 is formed with connecting part 52 split ground.The 5th outer ring body 50b that first opposing part 54 compares the 5th bearing 50 extends until the foreign side of radial direction.First opposing part 54 forms with drive division 22.
< second opposing part >
Second opposing part 56 the hand of rotation of drive division 22 and hub shell 24 and the empty standard width of a room in an old-style house of the first opposing part 54 every, arrange opposite to each other with the first opposing part 54.The direction that the hand of rotation of drive division 22 and hub shell 24 rotates when being bicycle advances.Second opposing part 56 is located at the downstream of the hand of rotation of the first opposing part 54.Second opposing part 56 close to hub shell 24 bearing support 24d arrange, compare the first end side (end in the left side of Fig. 2) that bearing support 24d is located at hub shell 24.Second opposing part 56 has the protrusion 56a given prominence to towards drive division 22 from the inner peripheral portion of hub shell 24.The arm 54a of the first opposing part 54 and protrusion 56a of the second opposing part 56, at hand of rotation forward surface opposite each other, preferably configure abreast.First opposing part 54 and the second opposing part 56 as shown in Figure 4, across configuring multiple from the central axis C of hub spindle 20 opposite to each other with many imaginary radius line R radially extending in the plane of this central axis upright.In the diagram, show the situation that imaginary radius line is four, expression be the situation that the first opposing part 54 and the second opposing part 56 arrange four respectively.Second opposing part 56 arranges the quantity identical with the first opposing part 54.Multipair first opposing part 54 and the second opposing part 56, is preferably arranged on around on the rotational symmetric position of central axis C of hub spindle 20.In addition, preferably, multiple first opposing part 54 is configured to equal with the distance of the first opposing part 54 adjoined in circumference, and multiple second opposing part 56 is configured to equal with the distance of the second opposing part 56 adjoined in circumference.Second opposing part 56 forms with hub shell 24.
< propulsive effort measurement section >
Propulsive effort measurement section 26 has at least one sensor 58.Sensor 58 can measure the first opposing part 54 and the interval of the second opposing part 56 or the displacement at interval.Sensor 58 is such as the sensor of eddy current type.Sensor 58 is arranged on the first opposing part 54 in this embodiment.And then, specifically, at the terminal part of the first opposing part 54, sensor 58 is being set with the second opposing part 56 part in opposite directions.
The sensor 58 of eddy current type make use of high frequency magnetic field.Specifically, flow through high-frequency currents at the coil of sensor head inside, produce high frequency magnetic field.When there is second-phase to portion 56 in this magnetic field, due to electromagnetic induction effect, flow through the vortex flow by vertical direction with magnetic flux on the surface of the second opposing part 56, correspond to the distance with the second opposing part 56, the impedance of cell winding changes.The sensor 58 of eddy current type utilizes this phenomenon, exports the signal at the interval of expression first opposing part 54 and the second opposing part 56 or the signal corresponding with the displacement at interval.In addition, multiple sensor 58 is connected or is connected in parallel.
< wireless transmission part >
Wireless transmission part 28 has the circuit substrate 28b of the inner peripheral portion being fixed on hub shell 24.Sensor 58 is connected by not shown wired electric with circuit substrate 28b.On circuit substrate 28b, the amplifier that the output being equipped with microcomputer, in the future sensor 58 is amplified, the AD(Analog-Digital signal be exaggerated by amplifier being converted to digital signal) electronic unit of change-over circuit and wireless transmission circuit etc. and the rechargeable battery 28c as power supply.In the present embodiment, microcomputer, amplifier and A/D convertor circuit form a part for propulsive effort measurement section 26.
Wireless transmission part 28 wireless transmission is based on the information of the output of sensor 58.From wireless transmission part 28 wireless transmission information out, shown as at least any one in propulsive effort, torque and power by not shown code table.Also in the microcomputer being located at circuit substrate 28b, at least any one in propulsive effort, torque and power can be calculated based on the output of sensor 58, in addition, in code table, at least any one in propulsive effort, torque and power also can be calculated based on the information received.Also primary battery is set with can substituting rechargeable battery 28c.Rechargeable battery 28c or primary battery are detachably located at circuit substrate 28b.
In the rear-wheel hub 10 formed like this, when to be assembled on bicycle and by rider pedal step on foot-operated time, the legpower of rider is passed to hub shell 24 as propulsive effort from drive division 22.Now, connecting part 52 slightly distortion, the interval of the first opposing part 54 and the second opposing part 56 corresponds to propulsive effort and changes.Specifically, when propulsive effort becomes large, the distortion quantitative change of connecting part 52 is large, and the first opposing part 54 and the second opposing part 56 that are provided with sensor 58 are close.The information of wireless transmission part 28 to the propulsive effort corresponding with the output of this sensor 58 processes, and wireless transmission part 28 is to code table wireless transmission.In code table, receive the information of the expression propulsive effort of wireless transmission and show.Thus, rider can recognize the propulsive effort, torque, power etc. that self produce.
At this, by sensor 58, first the opposing part 54 and relative interval of the second opposing part 56 or displacement at interval is detected, thus, can suppress, by the impact of the assembling mode of sensor 58 on measurement result, the impact being subject to assembly precision can be difficult to.
< second embodiment >
In the first embodiment, first component 40 split of connecting part 52 and drive division 22 is formed, but the present invention is not limited thereto.If connecting part is in drive division in the propulsive effort bang path from drive division to hub shell, then can be arbitrary form.In addition, in explanation afterwards, omit about forming and the explanation of shape parts identical with the first embodiment.
As shown in Figure 5, rear-wheel hub 110 possesses hub spindle 20, drive division 122, hub shell 124, at least one first opposing part 154, at least one second opposing part 156, propulsive effort measurement section 126, wireless transmission part 128 and electrical generator 160.
The connecting part 152 of drive division 122 is integrally formed with the first component 140 of drive division 122.First component 140 has the first portion 140b possessing recess 140a.The first end (end in the left side of Fig. 5) of first component 140 extends to the inner circumferential side of hub shell 124.First component 140, in the first end side (on the left of Fig. 5) of first portion 140b, has second portion 140c that diameter is larger than first portion 140b.Connecting part 152 is formed in second portion 140c of first component 140 and the diameter barrel less than second portion 140c.
The terminal part of connecting part 152 can be integrally rotatably outstanding to radially inner side with the inner peripheral portion of the centre portion from hub shell 124 raised 124f link.Projection 124f both can be formed as ring-type, also can such as be formed every ground at the empty standard width of a room in an old-style house of circumference.At the pars intermedia of connecting part 152, form multiple hole 152c at the empty standard width of a room in an old-style house of circumference every ground.Hole 152c is arranged in the mode running through connecting part 152.The function of hole 152c is identical with the first embodiment.First opposing part 154 as shown in Figure 6, is arranged close to bearing support 124d.First opposing part 154 compares the first end side that bearing support 124d is arranged on hub shell 124.In the junction section of second portion 140c and connecting part 152, there is the arm 154a extended from the outer peripheral face of second portion 140c towards hub shell 124.At the first opposing part 154, sensor 158 is set.First opposing part 154 forms with first component 40.
Second opposing part 156 inner peripheral portion had to hub shell 124 is recessed into the 156a of recess in opposite directions of formation.Recess 156a is formed so that the mode of surrounding the end section of the first opposing part 154 is recessed in opposite directions.The arm 154a of the first opposing part 154 and 156a of recess in opposite directions of the second opposing part 156, at hand of rotation forward surface opposite each other, preferably configured in parallel.
First opposing part 154 and the second opposing part 156 as shown in Figure 6, across configuring multiple from the central axis C of hub spindle 20 in opposite directions with many imaginary radius line R ground radially extending in the plane of this central axis upright.In figure 6, show the situation that imaginary radius line is four, expression be the situation that the first opposing part 154 and the second opposing part 156 arrange four respectively.Second opposing part 156 is provided with the quantity identical with the first opposing part 154.Multipair first opposing part 154 and the second opposing part 156, is preferably arranged on around on the rotational symmetric position of central axis C of hub spindle 20.In addition, preferably, multiple first opposing part 154 is configured to equal with the distance of the first opposing part 154 adjoined in circumference, and multiple second opposing part 156 is configured to equal with the distance of the second opposing part 156 adjoined in circumference.
Propulsive effort measurement section 126 has sensor 158.Sensor 158 is located at the first opposing part 154 in this embodiment.And then, specifically, at the terminal part of the first opposing part 154, sensor 158 is being set along hand of rotation and the second opposing part 56 part in opposite directions.Sensor 158 is sensors of optical profile type.The light of laser etc. irradiates towards the second opposing part 156 by sensor 158, detects the reflected light from the second opposing part 156.By utilizing sensor 158, detect the phase difference irradiating light and reflected light, thus the first opposing part 154 and the interval of the second opposing part 156 or the displacement at interval can be measured.Also reflection efficiently can be set at the second opposing part 156 and carry out the reflecting part of the light of sensor 158.Reflecting part both can be formed by coating, also can the parts of adhering advertisment paper shape.In addition, multiple sensor 58 is connected or is connected in parallel.
Electrical generator 160 is power supplys wireless transmission part 28 and sensor 158 being supplied to electric power.Electrical generator 160 has: the magnet 162 being fixed on the peripheral part of the axle body 30 of hub spindle 20; At the rotor 164 that outer circumferential side and the magnet 162 of magnet 162 configure opposite to each other.Rotor 164 has: the coil winding frame being fixed on the inner peripheral portion of hub shell 124; Be wound around the coil being installed on coil winding frame; Be configured in the yoke of the surrounding of coil.The output of coil becomes direct current by wireless transmission part 28 rectification, uses as power supply.
In the second such embodiment, also same with the first embodiment, detect the first opposing part 154 and the interval of the second opposing part 156 or the displacement at interval by sensor 158, thus, the impact being subject to assembly precision can be difficult to.
< the 3rd embodiment >
3rd embodiment is only different from the first embodiment in the shape of the first opposing part and the formation of sensor.In the third embodiment, as shown in Figure 7, the second opposing part 256 be located on hub shell 224 is shapes same with the first opposing part 54 of the first embodiment shown in Fig. 4.In the third embodiment, the first opposing part 254 is arranged on the peripheral part of the endless member 254a being located at drive division 222.Endless member 254a is located at the 3rd portion 240d, forms with first component 40.First opposing part 254 has the 254b of recess being in opposite directions recessed into formation to endless member 254a.Recess 254b is formed so that the mode of surrounding the end section of the second opposing part 156 is recessed in opposite directions.The 254b of recess in opposite directions of the first opposing part 154 and the second opposing part 256, at hand of rotation forward surface opposite each other, preferably configured in parallel.
First opposing part 254 and the second opposing part 256 as shown in Figure 7, across configuring multiple from the central axis C of hub spindle 20 in opposite directions with many imaginary radius line R ground radially extending in the plane of this central axis upright.In figure 6, show the situation that imaginary radius line is four, expression be the situation that the first opposing part 254 and the second opposing part 256 arrange four respectively.Second opposing part 256 is provided with the quantity identical with the first opposing part 254.Multipair first opposing part 254 and the second opposing part 256, is preferably arranged on around on the rotational symmetric position of central axis C of hub spindle 20.In addition, preferably, multiple first opposing part 254 is configured to equal with the distance of the first opposing part 254 adjoined in circumference, and multiple second opposing part 256 is configured to equal with the distance of the second opposing part 256 adjoined in circumference.
Propulsive effort measurement section 226 has sensor 258.Sensor 258 is located at the first opposing part 254 in this embodiment.Specifically, at the 254b of recess in opposite directions of the first opposing part 254, sensor 258 is being set along hand of rotation and the second opposing part 256 part in opposite directions.Sensor 258 is sensors of electrostatic capacity type.Sensor 258 has: the first electrode 258a forming the anode of cond; Configure in opposite directions with the first electrode 258a and form the second electrode 258b of the negative electrode of cond.First electrode 258a is arranged on the first opposing part 254.Second electrode 258b is to be installed on the second opposing part 256 with the first electrode mode in opposite directions.By using the sensor 258 of electrostatic capacity type, the principle that the interval of the first electrode 258a and the second electrode 258b can be utilized to follow electrostatic capacity be inversely proportional to, measures the first opposing part 254 and the interval of the second opposing part 256 or the displacement at interval.
Multiple sensor 258 is connected in series as shown in Figure 8.In fig. 8, on the circuit substrate 228b of propulsive effort measurement section 226, be connected in series two coil 228ds configuring in parallel with four sensors 258 be connected in series and the transistor 228e with two coil 228d npn types configured in parallel are set.The pedestal of transistor 228e is connected with the one end of two the coil 228d be connected in series, and collecting electrode is connected with the other end of two the coil 228d be connected in series.The projector of transistor 228e is connected to the intermediate node of two the coil 228d be connected in series.LC resonant circuit is formed, the output of amplification sensor 258 by sensor 258 and coil.When directly connecting multiple sensor 258, without the need to arranging the signal processing circuit detected from the signal of each sensor respectively, so formation can be simplified, current sinking can be reduced.In addition, the error being configured in the output of multiple sensors 258 of diverse location is cancelled, thus, and can the displacement at assay intervals or interval accurately.
In addition, in Fig. 9 of the modified example of dependence the 3rd embodiment, four sensors 258 ' are connected in parallel.Modified example is except the aspect that four sensors 258 ' be connected in parallel and two the coil 228d be connected in series are connected in parallel, identical with the formation of the 3rd embodiment shown in Fig. 8.
When being connected in parallel multiple sensor 258 ', without the need to arranging the signal processing circuit detected from the signal of each sensor respectively, so formation can be simplified, current sinking can be reduced.In addition, the output being configured in multiple sensors of diverse location is cancelled, thus, and can the displacement at assay intervals or interval accurately.
In the 3rd such embodiment, also same with the first and second embodiment, detect the first opposing part 254 and the interval of the second opposing part 256 or the displacement at interval by sensor 258, thus, the impact being subject to assembly precision can be difficult to.
< the 4th embodiment >
As shown in figs.10 and 11, in the rear hub for bicycle 310 of dependence the 4th embodiment, same with the first embodiment shown in Fig. 2, the propulsive effort of drive division 322 is passed to hub shell 324 via connecting part 352.The sensor 358 of propulsive effort measurement section 326 is located at four the first opposing parts 354 respectively.Sensor 358 as shown in Figure 12, is made up of the coil 358a being formed at substrate 358b.Four coil 358a as shown in Figure 13, are connected in series.From the output signal of four the coil 358a be connected in series, after being processed by signal processing part 327, export to wireless transmission part 328.Signal processing part 327 has oscillating circuit 327a, signal processing circuit 327b and communication circuit 327c.Oscillating circuit 327a makes to vibrate from the output of coil 358a.Oscillating circuit 327 is such as realized by LC oscillating circuit.Oscillating circuit 327 also can comprise coil 358a and form.Signal processing circuit 327b converts the signal crossed by oscillating circuit 327 oscillation treatment to series data, exports to wireless transmission part 328 via communication circuit 327c.Wireless transmission part 328 has the control part 328a comprising microcomputer.The signal wireless of the expression propulsive effort processed by signal processing part 327 sends by wireless transmission part 328.In addition, in the 4th embodiment, signal processing part 327 as shown in Figure 10, is configured in the inner side of hub shell 324.Wireless transmission part 328 is configured in the outside of hub shell 324, by covering lid.Cover is formed by the raw MAT'L through electric wave, such as, formed by synthetic resin.Signal processing part 327 also can the outside that be configured in hub shell 324 same with wireless transmission part 328, and signal processing part 327 and wireless transmission part 328 can also be formed on one substrate.
In the 4th embodiment, be connected in series four coil 358a and form sensor 358, thus, can formation be simplified, can current sinking be reduced.In addition, the error being configured in the output of the multiple sensors 258 on diverse location is cancelled, thus, and can the displacement at assay intervals or interval accurately.
In the first modified example of the 4th embodiment, as shown in Figure 14, four coil 358a ' be connected in parallel in different from the 4th embodiment.If four coil 358a ' are connected in parallel, then without the need to arranging the signal processing circuit detected from the signal of each sensor respectively, so formation can be simplified, current sinking can be reduced.In addition, the output being configured in the multiple sensors on diverse location is cancelled, thus, and can the displacement at assay intervals or interval accurately.
In the second modified example of the 4th embodiment, as shown in Figure 15, form the coil 358a of sensor 358 be located at the second opposing part 356 but not the first opposing part 354 in different from the 4th embodiment.Thus, the hub shell 324 identical with signal processing part 327 arranges coil 358a, thus, the distribution of coil 358a and signal processing part 327 becomes easy.
< the 5th embodiment >
The rear hub for bicycle 10 relying on the 5th embodiment as shown in Figure 16, can be arranged on the hub spindle installation portion 102 at the rear portion of the framework being located at bicycle.Rear-wheel hub 10 possesses hub spindle 20, drive division 22, hub shell 24, propulsive effort measurement section 26 and wireless transmission part 28.Hub shell 24 is rotatably freely supported on hub spindle 20 by clutch shaft bearing 46.Drive division 22 is rotatably freely supported on hub spindle 20 by the second bearing 47.Propulsive effort measurement section 26 can measure the propulsive effort of rider.The relevant information wireless transmission of measured propulsive effort is gone out by wireless transmission part 28.The relevant information of the propulsive effort be sent wirelessly, such as, show in the not shown code table in handlebar portion that can be installed on bicycle.In addition, in code table, also show the information of rotative speed (step on frequently), operating range etc. of the speed of bicycle, crank.
< hub spindle >
Hub spindle 20 has: the axle body 30 installing the hollow of Quick-disassembling mechanism 29; Be installed on the first lock nut 32 of the first end (end in the left side of Figure 16) of axle body 30; Be installed on the second lock nut 34 of the second end (end on the right side of Figure 16) of axle body 30.In the first lock nut 32 and the second lock nut 34, hub spindle installation portion 102 can be installed.At this, describe the formation that the first lock nut 32 and the second lock nut 34 are installed on hub spindle installation portion 102, but also can be the formation that axle body 30 is installed on the hub spindle installation portion 102 of framework.
As shown in Figure 17, at the inner peripheral surface of the first end of axle body 30, form female threaded portion 30a.First of axle body 30 and the outer peripheral face of the second end, form the first outer screw section 30b and the second outer screw section 30c respectively.First lock nut 32 has the outer screw section be threadedly engaged with female threaded portion 30a, is threaded into and is fixed on axle body 30.Second lock nut 34 has the female threaded portion be threadedly engaged with the second outer screw section 30c, is threaded into and is fixed on axle body 30.
< drive division >
Drive division 22 is formed with comprising so-called free gear.Drive division 22 has: the first component 40 being rotatably freely supported on hub spindle 20; Be configured in the second component 42 of the outer circumferential side of first component 40; Be configured in the free-wheel clutch 44 between first component 40 and second component 42; Connecting part 52; Measured portion 53.First component 40 is examples for inner side cylindrical portion, and second component 42 is examples for outside cylindrical portion.
First component 40 is the parts being rotatably freely supported on the tubular of hub spindle 20 by the second bearing 47.At this, first component 40 is formed as cylindric.Second bearing 47 has the second inner ring body 47a, the second outer ring body 47b and multiple second rolling body 47c.Second inner ring body 47a forms screw thread at peripheral part, is threaded into and is fixed on the second outer screw section 30c of axle body 30.Second outer ring body 47b forms screw thread in inner peripheral portion, is threaded into and is fixed on the outer screw section on the outer peripheral face being formed in first component 40.Multiple second rolling body 47c between the second inner ring body 47a and the second outer ring body 47b circumferentially sky open compartment of terrain arrange.Second rolling body 47c is rotatably held in not shown retainer, configures with opening predetermined distance at circumferential sky.Second rolling body 47c both can be spheroid, also can be roller.
First component 40 has first portion 40b of the recess 40a of the clutch claw 44a possessing storage free-wheel clutch 44.The first end (end in the left side of Figure 17) of first component 40 extends to the inner circumferential side of hub shell 24.First component 40 has second portion 40c in the first end side (on the left of Figure 17) of first portion 40b.Second portion 40c has the diameter larger than the diameter of first portion 40b.Second portion 40c and first portion 40b also can have identical diameter.The second outer ring body 47b of the second bearing 47 is fixed at the second end (end on the right side of Figure 17) of first portion 40b.At the outer peripheral face of the junction section of first portion 40b and second portion 40c, be formed with the 3rd inner ring face 48a of formation the 3rd bearing 48.At the outer peripheral face of second portion 40c, be formed with the 5th inner ring face 50a of the 5th bearing 50 for hub shell 24 being rotatably freely supported on drive division 22.
Second component 42 be by the 3rd bearing 48 and the 4th bearing 49 relative to first component 40 by the cartridge rotatably supported.At this, second component 42 is formed as cylindric.3rd bearing 48 is formed by aforesaid 3rd inner ring face 48a, the 3rd face, outer ring 48b and multiple 3rd rolling body 48c.3rd face, outer ring 48b is formed in the inner peripheral surface of the first end (end in the left side of Fig. 2) of second component 42.Multiple 3rd rolling body 48c opens compartment of terrain at circumferential sky and arranges between the 3rd inner ring face 48a and the 3rd face, outer ring 48b.3rd rolling body 48c is rotatably held in not shown retainer, configures at circumferentially spaced predetermined distance.3rd rolling body 48c both can be spheroid, also can be roller.
4th bearing 49 is formed by the 4th inner ring face 49a, the 4th face, the outer ring 49b of outer peripheral face and multiple 4th rolling body 49c being formed in the second outer ring body 47b.The hub spindle that 4th face, outer ring 49b is formed in second component 42 to the inner peripheral surface of pars intermedia.Multiple 4th rolling body 49c opens compartment of terrain at circumferential sky and arranges between the 4th inner ring face 49a and the 4th face, outer ring 49b.4th rolling body 49c is rotatably kept by not shown retainer, configures with opening predetermined distance at circumferential sky.4th rolling body 49c both can be spheroid, also can be roller.
Second component 42 as shown in Figure 16, has the sprocket wheel installation portion 42a installing sprocket wheel complex 80 at outer peripheral face.Sprocket wheel complex 80 is examples for drive transfer part.Sprocket wheel complex 80 and second component 42 rotate integratedly.Sprocket wheel complex 80 is examples for drive transfer part.Sprocket wheel installation portion 42a such as has the protuberance or the spline of recess that are provided with and open compartment of terrain configuration at circumferential sky at peripheral part.Sprocket wheel complex 80 has the sprocket wheel 80a ~ 80i of the number of teeth different multiple (such as 9).By the chain 81 of any sprocket engagement with sprocket wheel complex 80, the rotation of not shown crank is delivered to drive division 22.At this, at sprocket wheel installation portion 42a, multiple sprocket wheel is installed, but the quantity being installed on the sprocket wheel of sprocket wheel installation portion 42a also can be one.
Free-wheel clutch 44 is arranged in order to only the rotation of the direct of travel of the bicycle of second component 42 is passed to first component 40.Thus, only the rotation of cranked direct of travel is delivered to hub shell 24.In addition, the rotation of the direct of travel of hub shell 24 does not pass to second component 42.Free-wheel clutch 44 has: be located at recess 40a clutch claw 44a with freely swinging into prime and second; Be formed in the hook tooth 44b of the inner peripheral surface of second component 42; To the force application part 44c that clutch claw 44a exerts a force.Clutch claw 44a contacts with hook tooth 44b under prime, departs under second from hook tooth 44b.Force application part 44c be arranged on be formed at first component 40 endless groove in.Force application part 44c is the spring members formed by metal wire rod is bent to C-shaped, exerts a force towards prime side to clutch claw 44a.
Connecting part 52 and hub shell 24 link, and are located at the propulsive effort bang path from drive division 22 to hub shell 24.In this embodiment, connecting part 52, at the centre portion of the axis of hub shell 24, is located between the medial surface of hub shell 24 and measured portion 53.Connecting part 52 has outer screw section 52a at outer peripheral face.Outer screw section 52a be formed in hub shell 24 ring-type described later projection 24f inner peripheral surface on female threaded portion 24g be threadedly engaged.Therefore, connecting part 52 is threaded into and is fixed on hub shell 24.Hub shell 24 and connecting part 52, also can combine with the anti-avulsion parts (not shown) of connecting part 52 around the rotation of hub spindle further by stoping hub shell 24.Anti-avulsion parts can be formed by the bolt of tubular, in this case, are configured to, and the inner peripheral surface in the end of connecting part 52 forms negative thread, sandwiches a part of projection 24f between the head and connecting part 52 of bolt.In addition, also can be formed by nut, in this case, be configured to, the outer peripheral face in the end of connecting part 52 forms negative thread, sandwiches a part of projection 24f between nut and connecting part 52.
Measured portion 53 is arranged for measuring propulsive effort, is formed on first component 40b.Measured portion 53 extends from second portion 40c of first component 40b towards connecting part 52.Measured portion 53 is formed as tubular, is formed as cylindric at this.Measured portion 53 has the diameter less than the diameter of second portion 40c.Measured portion 53 is integrally formed with connecting part 52.
< hub shell >
As shown in Figure 17, first end (end in the left side of Figure 17) is rotatably freely supported on the axle body 30 of hub spindle 20 to hub shell 24 by clutch shaft bearing 46.The second end (end on the right side of Figure 17) of hub shell is rotatably freely supported on the axle body 30 of hub spindle 20 by the 5th bearing 50 as described above via drive division 22.At the second end of hub shell 24, the 5th outer ring body 50b of the 5th bearing 50 is installed.Clutch shaft bearing 46 has: form screw thread at inner peripheral surface and be threaded into the first inner ring body 46a of the first outer screw section 30b being fixed on axle body 30; First outer ring body 46b; Multiple first rolling body 46c.First rolling body 46c is rotatably kept by not shown retainer, configures with opening predetermined distance at circumferential sky.First rolling body 46c both can be spheroid, also can be roller.
5th bearing 50 has: aforesaid 5th inner ring face 50a; The 5th outer ring body 50b of the inner peripheral portion of the second end of hub shell 24 is fixed in such as press-in; Multiple 5th rolling body 50c.5th rolling body 50c opens compartment of terrain at circumferential sky and configures between the 5th inner ring face 50a and the 5th outer ring body 50b.5th rolling body 50c is rotatably kept by not shown retainer, configures with opening predetermined distance at circumferential sky.5th rolling body 50c both can be spheroid, also can be roller.
At the peripheral part of hub shell 24, first wheel flange 24a and the second hub flange 24b for linking the spoke of the trailing wheel of bicycle open compartment of terrain at the axial sky of hub spindle 20 and are formed highlightedly in the form of a ring.At the inner peripheral surface of the pars intermedia of the axis of hub shell 24, form the projection 24f engaged with the outer peripheral face of connecting part 52.At the inner peripheral surface of projection 24f, form the female threaded portion 24g be threadedly engaged with outer screw section 52a.Hub shell 24 also can be a structure part can split to assemble.In the present embodiment, the projection 24f hub spindle that is formed in hub shell 24 to central portion.
< propulsive effort measurement section >
Propulsive effort measurement section 26 has at least one sensor 58.Sensor 58 can measure the twist angle in measured portion 53.Sensor 58 is such as strain gauge or the semiconductor transducer that can detect strain.Sensor 58 is such as fixed on measured portion 53 by the suitable fixing means of bonding grade.Sensor 58 is located at the outer peripheral face in measured portion 53.Sensor 58 is such as opened compartment of terrain at circumferential sky and is located at many places (such as four positions).When using strain gauge as sensor 58, at the configuration position of each sensor 58, arrange multiple strain gauge, each strain gauge detects mutually different directions, such as by the strain in 90 ° of different directions.In addition, each askew survey meter test example is as the direction of the axioversion relative to rear-wheel hub 10, such as by the strain in 45 ° of directions tilted.In addition, the strain gauge 58 at each configuration position connects into bridge like in the mode eliminating interference.
< wireless transmission part >
Wireless transmission part 28 has the circuit substrate 28b of inner peripheral portion or the peripheral part being fixed on hub shell 24.Sensor 58 is connected by not shown wired electric with circuit substrate 28b.On circuit substrate 28b, be equipped with microcomputer, amplify the amplifier of the output carrying out sensor 58, will be converted to the AD(Analog-Digital of digital signal by amplifier amplifying signal) electronic unit of change-over circuit and wireless transmission circuit etc. and the rechargeable battery 28c as power supply.In the present embodiment, microcomputer, amplifier and A/D convertor circuit form a part for propulsive effort measurement section 26.
Wireless transmission part 28 wireless transmission is based on the information of the output of sensor 58.From the information that wireless transmission part 28 wireless transmission goes out, shown as at least any one in propulsive effort, torque and power by not shown code table.Also based on the output of sensor 58, in the microcomputer being located at circuit substrate 28b, at least any one in propulsive effort, torque and power can be calculated; In addition, also in code table, based on the information received, at least any one in propulsive effort, torque and power can be calculated.Also primary battery is set with can substituting rechargeable battery 28c.Rechargeable battery 28c or primary battery are detachably located at circuit substrate 28b.
In the rear-wheel hub 10 formed like this, when be assembled in bicycle and by rider pedal step on foot-operated time, the legpower of rider passes to hub shell 24 as propulsive effort from drive division 22.Now, the distortion a little of measured portion 53, twist angle changes according to propulsive effort.Specifically, when propulsive effort becomes large, the distortion quantitative change in measured portion 53 is large.Corresponding to the twist angle in measured portion 53, the output of sensor 58 changes.Wireless transmission part 28 processes the information of the propulsive effort corresponding with the output of sensor 58, and wireless transmission part 28 is to code table wireless transmission.In code table, receive and show the information of the expression propulsive effort be sent wirelessly.Thus, rider can understand the propulsive effort, torque, power etc. that self produces.
At this, by Part I 40 is formed integratedly with measured portion 53, with by Part I 40 and measured portion 53 split compared with situation about forming, the interference of being measured by propulsive effort determination part 26 can be reduced, be difficult to the deviation of the distortion producing tested bonding part and estimating precision can be improved, can gravity be alleviated in addition.
In the 5th embodiment, connecting part 52 is configured with at the centre portion of the axis of hub shell 24, but in the rear-wheel hub 110 of the modified example shown in Figure 18, the connecting part 152 with outer screw section 152a is configured in the first end of hub shell 124 (Figure 18 left part).The projection 124f with female threaded portion 124g is formed in the first end side of hub shell 124.At this, because the axial length of propulsive effort determination part 153 is elongated, so, compare the distortion that aforementioned embodiments can add large driving force determination part 153, compared with above-mentioned embodiment, the sensor 58 that strain detecting sensitivity is low can be used.
< the 6th embodiment >
In the 5th embodiment, the sensor as the distortion of measuring propulsive effort measurement section 26 employs strain gauge, but the present invention is not limited thereto.
In the rear-wheel hub 210 of the 6th embodiment shown in Figure 19, the sensor 258 of propulsive effort measurement section 226 has: the magnetostriction element 258a being located at propulsive effort determination part 253; Be configured in the magnetic test coil 258b of the outer circumferential side of magnetostriction element 258a.Other formation is same with aforesaid 5th embodiment.Magnetostriction element 258a arranges a pair in the mode that magnetic deformation direction is orthogonal.Magnetic test coil 258b is separately positioned on on each magnetostriction element 258a position in opposite directions, exports the signal corresponding to the distortion produced in magnetostriction element 258a.
When detecting distortion by such magnetostriction element 258a, the twist angle in measured portion 53 can be detected accurately.
Other embodiment of < >
Above, an embodiment of the invention are illustrated, but the present invention is not limited to above-mentioned embodiment, can various change be carried out in the scope not departing from inventive concept.
A () in the above-described embodiment, form drive division 22 with comprising the so-called loose boss with free-wheel clutch, but the present invention is not limited thereto.Such as, also the present invention can be suitable for for the rear-wheel hub without loose boss.
B () in the above-described embodiment, exemplified with the rear-wheel hub with Quick-disassembling mechanism 29, but also can be suitable for the present invention for the rear-wheel hub without Quick-disassembling mechanism.
C () in the above-described embodiment, is configured with sensor at the first opposing part 54, but also can in the second opposing part sensors configured.
D () in the first embodiment, as the sensor of sensor 58 exemplified with eddy current type, in this second embodiment as the sensor of sensor exemplified with optical profile type, in the third embodiment, exemplified with the sensor of electrostatic capacity type, but the present invention is not limited thereto.If sensor can measure the distance of the first opposing part and the second opposing part or the displacement of distance, it can be any form.Such as, also can be ultrasonic transduter.
In addition, the such as sensor of the first embodiment also can be the sensor of optical profile type or the sensor of electrostatic capacity type, the sensor of the second embodiment also can be the sensor of eddy current type or the sensor of electrostatic capacity type, and the sensor of the 3rd embodiment also can be the sensor of optical profile type or the sensor of eddy current type.
E () in the above-described embodiment, as power supply exemplified with electrical generator and rechargeable battery, but the present invention is not limited thereto.Such as, the charge storage element of chargeable cond etc. can also be used.In addition, the primary battery that can not charge can also be used as power supply.
F () in the above-described 2nd embodiment, electrical generator 60 supplies for the electric power of sensor 58 and wireless transmission part 28, but the present invention is not limited thereto.Also in wireless transmission part, detection can be carried out to obtain the rotational speed signal of rear-wheel hub to the power waveform of the interchange exported from electrical generator 60.Also can utilize the relevant information of obtained rotational speed signal and the propulsive effort be measured to by propulsive effort determination part and torque, in microcomputer, calculate power.In addition, by being sent the relevant information of rotational speed signal to code table by wireless transmission part, be multiplied by the girth of trailing wheel, can be used in the speed of a motor vehicle display in code table thus.
G () in the above-described embodiment, connecting part is formed the hole running through connecting part, but forms recess with also can substituting the hole run through, also can be configured to not providing holes in addition.
(h) also the first opposing part of the first embodiment and the second opposing part can be changed over second or the 3rd embodiment the first opposing part and the second opposing part.Also the first opposing part of the second embodiment and the second opposing part can be changed over first or the 3rd embodiment the first opposing part and the second opposing part.Also the first opposing part of the 3rd embodiment and the second opposing part can be changed over the first opposing part and second opposing part of the first or second embodiment.
(i) in the above-described embodiment, second opposing part 56 be located at the downstream of the hand of rotation of the first opposing part with sensor part in opposite directions, but the second opposing part 56 also can be located at the upstream side of the hand of rotation of the first opposing part with sensor part in opposite directions.When propulsive effort becomes large, the distortion quantitative change of connecting part 52 is large, is provided with the first opposing part leaving with sensor part in opposite directions from the second opposing part of sensor.Even if the relative interval of the first opposing part and the second opposing part or the displacement at interval in this case, also can be detected.
J () in the above-described embodiment, first component 40 possesses the different multiple cylindrical portion of diameter, but first component also can be the formation not possessing the different multiple cylindrical portion of diameter.The shape of first component 40 suitably can change corresponding to the form of bearing.
K () in the above-described embodiment, also by any one in the first to the 5th bearing or multiplely can change to plain bearing.In this case, can expendable weight.
L the part forming free gear among first component in the above-described embodiment, also can be formed in the mode detachable relative to other parts by ().When so forming, free gear can be changed freely.As long as the part can installed and removed among first component is combined with other parts by the connect mechanism of serration spline etc.
M connecting part and hub shell, in the 5th and the 6th embodiment, link together by being threaded into combine, but serration spline also can be utilized in the same manner as first to fourth embodiment to link connecting part and hub shell by ().On the contrary, also in first to fourth embodiment, serration spline ground can be substituted and links connecting part and hub shell by being threaded into combination.
N (), in the 5th and the 6th embodiment, is configured to possess battery as power supply, but also can possess electrical generator as shown in Figure 5 substituting battery.
Description of reference numerals
10,110,210,310 rear-wheel hubs
20 hub spindles
22,122,222,322 drive divisions
24,124,224,324 hub shells
26,126,226,326 propulsive effort measurement section
28 wireless transmission parts
42a sprocket wheel installation portion
52,152,352 connecting parts
54,154,254 first opposing parts
54a arm
56,156,256 second opposing parts
56a protrusion
58,158,258,258 ', 358,358 ' sensor
60 electrical generators
80 sprocket wheel complexs
258a magnetostriction element
258b magnetic test coil

Claims (32)

1. a rear hub for bicycle, is characterized in that, this rear hub for bicycle possesses:
Hub spindle, drive division, hub shell and propulsive effort measurement section,
Above-mentioned drive division is rotatably freely supported on above-mentioned hub spindle, and can install drive transfer part,
Above-mentioned drive division has: the connecting part being rotatably freely supported on the first component of above-mentioned hub spindle, being configured in the second component of the outer circumferential side of above-mentioned first component, be configured in the free-wheel clutch between above-mentioned first component and above-mentioned second component and link with above-mentioned hub shell
Above-mentioned hub shell is rotatably freely supported on above-mentioned hub spindle, and is passed the rotation of above-mentioned drive division,
At least one first opposing part is provided with in the periphery of above-mentioned drive division,
Be provided with can open compartment of terrain in opposite directions at least one second opposing part with above-mentioned first opposing part sky in the inner peripheral portion of above-mentioned hub shell,
Above-mentioned propulsive effort measurement section has at least one sensor, and this sensor can be measured above-mentioned first opposing part and the above-mentioned interval of the second opposing part or the displacement at interval,
In above-mentioned rear hub for bicycle, when from above-mentioned drive division to above-mentioned hub shell transmission of drive force, above-mentioned propulsive effort is passed to above-mentioned hub shell via above-mentioned connecting part from above-mentioned drive division.
2. as claimed in claim 1, wherein rear hub for bicycle, is characterized in that, above-mentioned first opposing part and above-mentioned second opposing part on the hand of rotation of above-mentioned drive division and above-mentioned hub shell in opposite directions.
3. the rear hub for bicycle described in claim 1 or 2, is characterized in that, above-mentioned first opposing part is given prominence to from the peripheral part of above-mentioned drive division.
4. the rear hub for bicycle described in claim 1 or 2, is characterized in that, above-mentioned second opposing part is given prominence to from the inner peripheral portion of above-mentioned hub shell.
5. rear hub for bicycle as claimed in claim 1, wherein, it is characterized in that, above-mentioned connecting part and above-mentioned first opposing part are arranged integratedly.
6. rear hub for bicycle as claimed in claim 1, wherein, it is characterized in that, above-mentioned connecting part and above-mentioned first-phase are arranged to part body.
7. the rear hub for bicycle described in claim 6, is characterized in that, above-mentioned connecting part is formed as ring-type, and is formed at the axially extended multiple through hole of wheel hub.
8. as claimed in claim 1, wherein rear hub for bicycle, is characterized in that, above-mentioned connecting part and above-mentioned hub shell are by serration spline or bonding and combine.
9. as claimed in claim 1, wherein rear hub for bicycle, is characterized in that, above-mentioned connecting part and above-mentioned hub shell above-mentioned hub shell above-mentioned hub spindle to central portion link.
10. the rear hub for bicycle described in claim 1 or 2, is characterized in that, above-mentioned first opposing part and above-mentioned second opposing part are provided with many groups.
11. rear hub for bicycles described in claim 10, is characterized in that, at least any one party in above-mentioned first opposing part of many groups and multiple above-mentioned second opposing part arranges multiple the sensor.
12. rear hub for bicycles described in claim 11, it is characterized in that, multiple the sensor is located at above-mentioned first opposing part.
13. rear hub for bicycles described in claim 11, it is characterized in that, multiple the sensor is located at above-mentioned second opposing part.
14. rear hub for bicycles described in claim 11, it is characterized in that, among above-mentioned many groups the first opposing part and the second opposing part, in at least any one group, the sensor is set at above-mentioned first opposing part, at least any one group, the sensor is set at above-mentioned second opposing part.
15. rear hub for bicycles described in claim 10, it is characterized in that, multiple the sensor is the sensor of eddy current type.
16. rear hub for bicycles described in claim 10, it is characterized in that, multiple the sensor is the sensor of electrostatic capacity type.
17. rear hub for bicycles described in claim 16, it is characterized in that, the sensor of multiple above-mentioned electrostatic capacity type has cond.
18. rear hub for bicycles described in claim 10, it is characterized in that, multiple the sensor is the sensor of optical profile type.
19. rear hub for bicycles described in claim 10, it is characterized in that, multiple the sensor is the sensor with coil.
20. rear hub for bicycles described in claim 10, it is characterized in that, multiple the sensor is connected in series.
21. rear hub for bicycles described in claim 10, it is characterized in that, multiple the sensor is connected in parallel.
22. rear hub for bicycles described in claim 1 or 2, it is characterized in that also possessing wireless transmission part, the information of the output based on the sensor is wirelessly sent to outside by this wireless transmission part.
23. rear hub for bicycles described in claim 1 or 2, is characterized in that, also possess the power supply to the sensor supply electric power.
24. rear hub for bicycles described in claim 23, it is characterized in that, above-mentioned power supply is battery.
25. rear hub for bicycles described in claim 23, it is characterized in that, above-mentioned power supply is electrical generator.
26. 1 kinds of rear hub for bicycles, is characterized in that, this rear hub for bicycle possesses:
Hub spindle;
Drive division, this drive division is rotatably freely supported on above-mentioned hub spindle, and can install drive transfer part;
Hub shell, this hub shell is rotatably freely supported on above-mentioned hub spindle, and is passed the rotation of above-mentioned drive division; And
Propulsive effort measurement section, this propulsive effort measurement section can be measured the propulsive effort transmitted to above-mentioned hub shell from above-mentioned drive division;
Above-mentioned drive division has: be rotatably freely supported on the inner side cylindrical portion of above-mentioned hub spindle, be configured in the outer circumferential side of above-mentioned inner side cylindrical portion and be provided with above-mentioned drive transfer part outside cylindrical portion, be configured in free-wheel clutch between above-mentioned inner side cylindrical portion and above-mentioned outside cylindrical portion, the connecting part that links with the inner side of above-mentioned hub shell and be provided with above-mentioned propulsive effort measurement section and the measured portion formed as one with above-mentioned inner side cylindrical portion
In above-mentioned rear hub for bicycle, when from above-mentioned drive division to above-mentioned hub shell transmission of drive force, above-mentioned propulsive effort is passed to above-mentioned hub shell via above-mentioned connecting part from above-mentioned drive division.
27. rear hub for bicycles described in claim 26, it is characterized in that, the centre portion of the axis of above-mentioned connecting part and above-mentioned hub shell links.
28. rear hub for bicycles described in claim 26, is characterized in that, between above-mentioned connecting part and above-mentioned inner side cylindrical portion, arrange above-mentioned measured portion.
29. rear hub for bicycles described in claim 26, it is characterized in that, above-mentioned propulsive effort measurement section is configured in the inner side of hub shell.
30. rear hub for bicycles described in claim 26, it is characterized in that, above-mentioned connecting part is threaded into and is fixed on above-mentioned hub shell.
31. rear hub for bicycles described in claim 26, it is characterized in that, above-mentioned propulsive effort measurement section has at least one strain gauge.
32. rear hub for bicycles described in claim 26, it is characterized in that, above-mentioned propulsive effort measurement section has:
Magnetostriction element, this magnetostriction element is configured in the outer peripheral face in above-mentioned measured portion; And
Magnetic test coil, this magnetic test coil and above-mentioned magnetostriction element are configured in the inner peripheral surface of above-mentioned hub shell opposite to each other.
CN201210288306.2A 2011-08-29 2012-08-14 Hub for rear wheel of bicycle Active CN102963485B (en)

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JP2011186590 2011-08-29
JP2011-186590 2011-08-29
JP2012-088083 2012-04-09
JP2012088083A JP2013064721A (en) 2011-08-29 2012-04-09 Rear hub for bicycle

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CN102963485A (en) 2013-03-13
DE102012016898A1 (en) 2013-02-28
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TW201321222A (en) 2013-06-01
JP2013064721A (en) 2013-04-11
DE102012016898B4 (en) 2021-06-17

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