Transmission for human-powered vehicle and assembly for human-powered vehicle

Abstract

The invention provides a transmission for a human-powered vehicle and an assembly for the human-powered vehicle, wherein the size of a shaft part in the axial direction can be reduced. A transmission for a human-powered vehicle is provided with a shaft member, a first planetary gear unit, and a second planetary gear unit. The first planetary gear unit includes: a first planetary gear; a first carrier having a first carrier pin formed as a different component from the second carrier pin and disposed at a distance from the second carrier pin; a first sun gear; and a first ring gear, the second planetary gear unit including a second planetary gear, a second carrier having a second carrier pin, a second sun gear, and a second ring gear, the first carrier pin and the second carrier pin being configured to overlap each other on a first plane, by controlling the rotation state of at least one of the first sun gear, the second sun gear, the first ring gear, and the second ring gear, the gear stages are switched in stages.

Description

Technical Field

[0001] The present invention relates to a transmission for a human-powered vehicle and a component for the human-powered vehicle. Background Art

[0002] For example, Patent Document 1 discloses an assembly including a transmission provided on a shaft member.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent document 1: Japanese Patent Application Publication No. 2018-100060. Summary of the invention

[0006] Problems to be solved by the invention

[0007] One of the objects of the present disclosure is to provide a transmission for a human-powered vehicle and a component for a human-powered vehicle, which can reduce the size of a shaft member in the axial direction.

[0008] The transmission according to the first aspect of the present disclosure is configured as a transmission for a human-powered vehicle that switches the gear speed of the human-powered vehicle in stages, and comprises: a shaft component; a first planetary gear unit, which is arranged on the shaft component; and a second planetary gear unit, which is arranged on the shaft component, the first planetary gear unit comprising: at least one first planetary gear; a first gear carrier, which has at least one first gear carrier pin, and the at least one first planetary gear is supported by the at least one first gear carrier pin; at least one first sun gear, which meshes with the at least one first planetary gear; and at least one first ring gear, which meshes with the at least one first planetary gear, the second planetary gear unit comprising: at least one second planetary gear; a second gear carrier, which has at least one second gear carrier pin, and , supporting the at least one second planetary gear through the at least one second gear carrier pin; at least one second sun gear, which is engaged with the at least one second planetary gear; and at least one second ring gear, which is meshed with the at least one second planetary gear, the at least one first gear carrier pin and the at least one second gear carrier pin are formed as different components, and are configured to be separated from the at least one second gear carrier pin, and the at least one first gear carrier pin and the at least one second gear carrier pin are configured to overlap each other on a first plane orthogonal to the shaft component, and the speed gear is switched in stages by controlling the rotation state of at least one of the at least one first sun gear, the at least one second sun gear, the at least one first ring gear, and the at least one second ring gear.

[0009] According to the transmission of the first aspect, since the at least one first carrier pin and the at least one second carrier pin overlap each other on the first plane orthogonal to the shaft member, the size of the transmission in the axial direction can be reduced.

[0010] In the transmission according to the second aspect of the first aspect of the present disclosure, the at least one first planetary gear includes a plurality of first planetary gears having different diameters, and at least the gear with the largest diameter among the plurality of first planetary gears is configured to overlap with the at least one second planetary gear when viewed axially from the shaft component.

[0011] According to the transmission of the second aspect, the size of the transmission in the radial direction with respect to the shaft member can be reduced.

[0012] In the transmission according to the third aspect of the first aspect or the second aspect of the present disclosure, the at least one second planetary gear includes a plurality of second planetary gears of different diameters, and at least the gear with the largest diameter among the plurality of second planetary gears is configured to overlap with the at least one first planetary gear when viewed axially from the shaft component.

[0013] According to the transmission of the third aspect, the size of the transmission in the radial direction with respect to the shaft member can be reduced.

[0014] 14. The transmission of claim 13 wherein the third planetary gear unit is a plurality of planetary gears each having a first gear and a second gear that is coupled to the plurality of first gears. The plurality of planetary gears are plurality of third planetary gears each having a first gear and a second gear that is coupled to the plurality of first gears. The plurality of planetary gears are plurality of third planetary gears each having a first gear and a second gear that is coupled to the plurality of first gears.

[0015] According to the transmission of the fourth aspect, the gear shifting is appropriately switched by controlling the rotation state of at least one of at least one first sun gear, at least one second sun gear, at least one first ring gear, at least one second ring gear, at least one third sun gear, and at least one third ring gear.

[0016] In the transmission of a fifth aspect according to any one of the first to fourth aspects of the present disclosure, a portion of the first gear carrier is formed integrally with a portion of the second gear carrier.

[0017] According to the transmission of the fifth aspect, since a portion of the first carrier and a portion of the second carrier are formed integrally, the number of parts can be reduced.

[0018] In the transmission according to the sixth aspect of the fifth aspect of the present disclosure, the first gear carrier has a first gear carrier portion and a second gear carrier portion, the at least one first gear carrier pin is supported by the first gear carrier portion and the second gear carrier portion, and the at least one first planetary gear is arranged between the first gear carrier portion and the second gear carrier portion in the axial direction of the shaft component.

[0019] According to the transmission of the sixth aspect, since the at least one first carrier pin is supported by the first carrier portion and the second carrier portion, the at least one first carrier pin can appropriately support the at least one first planetary gear.

[0020] In the transmission according to the sixth aspect and the seventh aspect of the present disclosure, the second gear carrier has the first gear carrier portion and the second gear carrier portion, the at least one second gear carrier pin is supported by the first gear carrier portion and the second gear carrier portion, and the at least one second planetary gear is arranged between the first gear carrier portion and the second gear carrier portion in the axial direction of the shaft component.

[0021] According to the transmission of the seventh aspect, since the at least one second carrier pin is supported by the first carrier portion and the second carrier portion, the at least one second carrier pin can appropriately support the at least one second planetary gear.

[0022] In the transmission according to the eighth aspect of the fourth aspect of the present disclosure, the first gear carrier has a first gear carrier portion and a second gear carrier portion, the at least one first gear carrier pin is supported by the first gear carrier portion and the second gear carrier portion, the at least one first planetary gear is arranged between the first gear carrier portion and the second gear carrier portion in the axial direction of the shaft component, the second gear carrier has at least one of the first gear carrier portion and the second gear carrier portion and a third gear carrier portion, the at least one second gear carrier pin is supported by at least one of the first gear carrier portion and the second gear carrier portion and the third gear carrier portion, the at least one second planetary gear is arranged between the second gear carrier portion and the third gear carrier portion, and the second gear carrier portion is arranged between the first gear carrier portion and the third gear carrier portion in the axial direction of the shaft component.

[0023] According to the transmission of the eighth aspect, since at least one first gear carrier pin is supported by the first gear carrier portion and the second gear carrier portion, the at least one first gear carrier pin can properly support the at least one first planetary gear. According to the transmission of the eighth aspect, since at least one second gear carrier pin is supported by at least one of the first gear carrier portion and the second gear carrier portion and the third gear carrier portion, the at least one second gear carrier pin can properly support the at least one second planetary gear.

[0024] In the ninth aspect of the transmission according to any one of the first to eighth aspects of the present disclosure, the transmission also has a speed switching mechanism, which switches the speed gear in stages by switching the rotation state of the at least one first ring gear and the rotation state of the at least one second ring gear.

[0025] According to the transmission of the ninth aspect, the speed switching mechanism can appropriately switch the speed gear by switching the rotation state of the at least one first ring gear and the rotation state of the at least one second ring gear.

[0026] In the transmission of the tenth aspect according to the ninth aspect of the present disclosure, the at least one first planetary gear includes a plurality of first planetary gears, the at least one first ring gear includes a plurality of first ring gears that can rotate independently of each other, the plurality of first planetary gears are respectively meshed with the plurality of first ring gears, and the speed switching mechanism switches the speed gear in stages by switching the rotation state of the plurality of first ring gears.

[0027] According to the transmission of the tenth aspect, the speed switching mechanism can appropriately switch the speed gear by switching the rotational states of the plurality of first ring gears.

[0028] In the transmission of the eleventh aspect according to the tenth aspect of the present disclosure, the at least one second planetary gear includes a plurality of second planetary gears, the at least one second ring gear includes a plurality of second ring gears that can rotate independently of each other, the plurality of second planetary gears are respectively meshed with the plurality of second ring gears, and the speed switching mechanism switches the speed gear in stages by switching the rotation state of the plurality of second ring gears.

[0029] According to the transmission of the eleventh aspect, the speed switching mechanism can appropriately switch the shift speed by switching the rotational states of the plurality of second ring gears.

[0030] In the transmission of the twelfth aspect according to any one of the ninth to eleventh aspects of the present disclosure, the at least one first sun gear and the at least one second sun gear are configured to rotate integrally in at least a first direction around the rotation center axis of the shaft component.

[0031] According to the transmission of the twelfth aspect, since the at least one first sun gear and the at least one second sun gear rotate integrally in at least the first direction, the driving force can be appropriately transmitted.

[0032] 14. The transmission of claim 13 wherein the at least one first planetary gear comprises a plurality of first planetary gears, the plurality of first planetary gears being arranged at intervals around the rotation center axis of the shaft component, the at least one second planetary gear comprises a plurality of second planetary gears being arranged at intervals around the rotation center axis of the shaft component, the at least one first gear carrier pin comprises a plurality of first gear carrier pins corresponding to the plurality of first planetary gears, the at least one second gear carrier pin comprises a plurality of second gear carrier pins corresponding to the plurality of second planetary gears, the plurality of first gear carrier pins and the plurality of second gear carrier pins being alternately arranged at equal intervals around the rotation center axis of the shaft component.

[0033] According to the transmission of the thirteenth aspect, since the plurality of first planetary gears and the plurality of second planetary gears are alternately arranged at equal intervals around the rotation center axis of the shaft member, the plurality of first planetary gears and the plurality of second planetary gears can be stably arranged.

[0034] 14. The transmission of claim 13, wherein the first planetary gear unit is an axle-mounted gear unit and the second planetary gear unit is an axle-mounted gear unit. The axle-mounted gear unit is axle-mounted gear unit, and the axle-mounted gear unit is axle-mounted gear unit. At least one fifth gear carrier pin supports at least one fifth planetary gear; at least one fifth sun gear, which is meshed with the at least one fifth planetary gear; and at least one fifth ring gear, which is meshed with the at least one fifth planetary gear, and the at least one fourth gear carrier pin and the at least one fifth gear carrier pin are formed as different components and are configured to be separated from the at least one fifth gear carrier pin, and the at least one fourth gear carrier pin and the at least one fifth gear carrier pin are configured to overlap each other on a second plane orthogonal to the shaft component, and the speed gear is switched in stages by controlling the rotation state of at least one of the at least one fourth sun gear, the at least one fifth sun gear, the at least one fourth ring gear, and the at least one fifth ring gear.

[0035] According to the transmission of the fourteenth aspect, since the at least one fourth carrier pin and the at least one fifth carrier pin overlap each other on the second plane orthogonal to the shaft member, the size of the transmission in the axial direction can be reduced.

[0036] In the transmission of the fifteenth aspect according to the fourteenth aspect of the present disclosure, a portion of the fourth carrier is formed integrally with a portion of the fifth carrier.

[0037] According to the transmission of the fifteenth aspect, since a portion of the fourth carrier and a portion of the fifth carrier are formed integrally, the number of parts can be reduced.

[0038] In the transmission according to the fourteenth aspect or the fifteenth aspect or the sixteenth aspect of the present disclosure, the at least one fourth sun gear and the at least one fifth sun gear are configured to rotate integrally in at least a first direction around the rotation center axis of the shaft component.

[0039] According to the transmission of the sixteenth aspect, since the at least one fourth sun gear and the at least one fifth sun gear rotate integrally in at least the first direction, the driving force can be appropriately transmitted.

[0040] In the seventeenth aspect of the transmission according to any one of the fourteenth to sixteenth aspects of the present disclosure, the transmission further comprises an input rotating part and an output rotating part, the input rotating part is connected to the first gear frame, and the output rotating part is connected to the fifth gear frame.

[0041] According to the transmission of the seventeenth aspect, the rotational force input from the input rotating portion to the first carrier can be transmitted from the fifth carrier to the output rotating portion.

[0042] In the eighteenth aspect of the transmission according to any one of the fourteenth to seventeenth aspects of the present disclosure, the at least one first sun gear, the at least one second sun gear, the at least one fourth sun gear, and the at least one fifth sun gear are configured to rotate integrally in at least a first direction around the center axis of rotation of the shaft component.

[0043] According to the transmission of the eighteenth aspect, since at least one first sun gear, at least one second sun gear, at least one fourth sun gear, and at least one fifth sun gear rotate integrally in at least the first direction, the driving force can be appropriately transmitted.

[0044] In the nineteenth aspect of the transmission according to any one of the first to thirteenth aspects of the present disclosure, the transmission also has a housing, which can be installed on the frame of the human-powered vehicle, and the transmission is configured to be installed on the housing and connected to the rear wheel of the human-powered vehicle via at least one of a chain, a belt, and a transmission shaft when the housing is installed on the frame.

[0045] According to the transmission of the nineteenth aspect, the driving force output from the transmission can be transmitted to the rear wheel via at least one of a chain, a belt, and a transmission shaft.

[0046] In the twentieth aspect of the transmission according to any one of the first to nineteenth aspects of the present disclosure, the transmission further includes an input rotating shaft, which is arranged parallel to the shaft member and is arranged at a distance from the shaft member in a radial direction of the input rotating shaft.

[0047] According to the transmission of the twentieth aspect, since the transmission is arranged on the shaft member that is arranged at a distance from the input rotating shaft, the dimension in the axial direction of the shaft member can be reduced.

[0048] A component according to a twenty-first aspect of the present disclosure is a component for a human-powered vehicle, and includes: the transmission according to any one of the first to twentieth aspects; and a motor configured to impart propulsion force to the human-powered vehicle.

[0049] According to the assembly of the twenty-first aspect, the size of the assembly including the motor configured to impart propulsion force to the human-powered vehicle in the axial direction of the shaft member can be reduced.

[0050] Effects of the Invention

[0051] The transmission for a human-powered vehicle and the assembly for a human-powered vehicle of the present disclosure can reduce the size of the shaft member in the axial direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 is a side view of an assembly for a human-powered vehicle including a transmission for a human-powered vehicle according to the first embodiment;

[0053] Figure 2 yes Figure 1 A perspective view of components for a human-powered vehicle;

[0054] Figure 3 When the housing is omitted, the Figure 1 A side view of the components used in a human-powered vehicle;

[0055] Figure 4 When the housing is omitted, the Figure 1 A side view of the components used in a human-powered vehicle;

[0056] Figure 5 yes Figure 3 A cross-sectional view of an assembly for a human-powered vehicle along line D5-D5;

[0057] Figure 6 Yes Figure 5 A cross-sectional view showing an enlarged portion of an assembly for a human-powered vehicle;

[0058] Figure 7 Yes Figure 1 A front view of a transmission for a human-powered vehicle omitting the ring gear;

[0059] Figure 8 Yes Figure 1 A perspective view of a transmission for a human-powered vehicle with the ring gear omitted;

[0060] Fig. 9 Yes Figure 7 A perspective view of the first transmission unit with the ring gear omitted;

[0061] Fig.10 Yes Figure 7 A top view of the first transmission unit with the ring gear omitted;

[0062] Fig.11 Yes Figure 7A perspective view of a second transmission unit with the ring gear omitted;

[0063] Fig.12 Yes Figure 7 A top view of the second transmission unit with the ring gear omitted;

[0064] Fig.13 yes Figure 1 Part of a transmission for a human-driven vehicle and a state where the ring gear is omitted Figure 6 A cross-sectional view of a portion of a transmission for a human-powered vehicle;

[0065] Fig.14 yes Figure 1 Part of a transmission for a human-driven vehicle and a state where the ring gear is omitted Figure 3 A cross-sectional view of a transmission for a human-powered vehicle along line D14-D14;

[0066] Fig.15 yes Figure 6 A cross-sectional view of the transmission along line D15-D15;

[0067] Fig.16 yes Figure 6 A cross-sectional view of the transmission along line D16-D16;

[0068] Fig.17 Yes means Figure 6 A framework diagram of a transmission path of driving force of components for a human-driven vehicle;

[0069] Fig.18 Yes means Figure 6 A three-dimensional diagram of a speed change switching mechanism of a transmission for a human-powered vehicle;

[0070] Fig.19 is a side view of the assembly for the human-powered vehicle of the second embodiment observed from the first direction in a state where the housing is omitted;

[0071] Fig. 20 is a side view of the assembly for the human-powered vehicle of the second embodiment observed from the second direction in a state where the housing is omitted;

[0072] Fig.21 This is a schematic diagram showing a transmission path of driving force of a component for a human-powered vehicle according to the second embodiment. DETAILED DESCRIPTION

[0073] <First embodiment>

[0074] Reference Figures 1 to 18 Next, the transmission 22 for a human-powered vehicle and the assembly 20 for a human-powered vehicle according to the first embodiment will be described.

[0075] A human-powered vehicle is a vehicle having at least one wheel and capable of being driven at least by human-powered driving force. Human-powered vehicles include various bicycles such as mountain bikes, road bikes, city bikes, cargo bikes, push bikes, and recumbent bikes. The number of wheels a human-powered vehicle has is not limited. For example, human-powered vehicles include unicycles and vehicles having more than two wheels. Human-powered vehicles are not limited to vehicles that can only be driven by human-powered driving force. Human-powered vehicles include electric bicycles (E-bikes) that are propelled not only by human-powered driving force but also by the driving force of an electric motor. Electric bicycles (E-bikes) include electric-assisted bicycles that are propelled with the assistance of an electric motor. In the following, a human-powered vehicle will be described as an electric-assisted bicycle.

[0076] For example, the human-powered vehicle includes a vehicle body and wheels. For example, the vehicle body includes a vehicle frame. For example, the wheels are arranged on the vehicle frame. The wheels include a front wheel and a rear wheel. The human-powered vehicle includes a crankshaft 10 that can rotate relative to the vehicle frame. Crank arms 12 are arranged at each axial end of the crankshaft 10. Each crank arm 12 is connected to a pedal. The crankshaft 10 inputs human-powered driving force from the crank arms 12 and the pedals.

[0077] For example, the component 20 is provided in the transmission path of the human driving force from the crankshaft 10 to the driving wheel of the human-powered vehicle. For example, the driving wheel includes at least one of the front wheel and the rear wheel. For example, the driving wheel includes the rear wheel. The component 20 is arranged around the input rotation center axis C1 of the crankshaft 10. The component 20 can be provided on the axle of the driving wheel.

[0078] For example, the assembly 20 for a human-powered vehicle includes a transmission 22 , a shaft member 24 which is disposed at a distance from an input rotating shaft 28 of the human-powered vehicle and on which the transmission 22 is disposed, and a speed increaser 26 .

[0079] For example, the transmission 22 is configured to change the final speed ratio of the human-powered vehicle. For example, the final speed ratio of the human-powered vehicle is the rotation speed of the drive wheel relative to the rotation speed of the crankshaft 10. For example, the final speed ratio of the human-powered vehicle is determined based on the speed ratio of the transmission included in the transmission path of the human-powered driving force, the reduction ratio of the reducer included in the transmission path of the human-powered driving force, and the speed ratio of the speed increaser included in the transmission path of the human-powered driving force.

[0080] For example, the transmission 22 is configured to change the speed ratio. For example, the transmission 22 is configured to select one of a plurality of speed ratios. For example, the speed ratio is a ratio of the output speed of the transmission 22 to the input speed of the transmission 22. The speed ratio may be greater than 1 or less than 1. The speed ratio may include 1.

[0081] In this specification, the speed ratio, the reduction ratio, and the speed increase ratio are represented by the speed ratio R, which is the ratio of the output speed S2 to the input speed S1 input to the corresponding device. The speed ratio R is represented by equation (1).

[0082] Formula (1): R = S2 / S1

[0083] When S1=S2, the speed ratio R is 1. When S1<S2, the speed ratio R is greater than 1. When S1>S2, the speed ratio R is less than 1. For example, the greater the speed increase ratio, the greater the speed increase amplitude. For example, the greater the speed reduction ratio, the smaller the speed reduction amplitude.

[0084] For example, the component 20 further includes an input rotating shaft 28. For example, human driving force is input to the input rotating shaft 28. For example, the input rotating shaft 28 constitutes a part of the transmission path of the human driving force. For example, the input rotating shaft 28 includes a crankshaft 10. For example, the shaft member 24 is configured in a substantially parallel manner relative to the input rotating shaft 28. In this specification, a statement such as "substantially parallel" refers to, for example, a completely parallel situation or a situation that is not completely parallel but can be regarded as completely parallel. For example, a situation that can be regarded as completely parallel is a situation where the function performed by the component 20 is not significantly affected by the non-parallelism.

[0085] For example, the speed increaser 26 is arranged in the transmission path of the human-powered driving force. For example, the speed increaser 26 constitutes a part of the transmission path of the human-powered driving force. For example, the speed increaser 26 is connected to the input rotating shaft 28. For example, the speed increaser 26 is configured to input the human-powered driving force via the input rotating shaft 28. For example, the speed increaser 26 is configured to transmit the human-powered driving force input to the input rotating shaft 28 to the transmission 22. For example, the speed increaser 26 is configured to rotate around the rotation center axis C2 of the shaft member 24. The speed increaser 26 can be configured to rotate around the input rotation center axis C1 of the input rotating shaft 28.

[0086] For example, the transmission 22 is provided in the transmission path of the human-powered driving force. For example, the transmission 22 constitutes a part of the transmission path of the human-powered driving force. For example, the transmission 22 is connected to the speed increaser 26. The human-powered driving force input to the input rotating shaft 28 is input to the transmission 22 via the speed increaser 26. For example, the transmission 22 is configured to rotate around the rotation center axis C2 of the shaft member 24.

[0087] For example, the assembly 20 further includes a housing 30 and an output rotating portion 32. For example, the output rotating portion 32 is provided in a transmission path of the human driving force. For example, the output rotating portion 32 constitutes a part of the transmission path of the human driving force. For example, the output rotating portion 32 is coaxially arranged with the shaft member 24. For example, the output rotating portion 32 is connected to the transmission 22.

[0088] For example, the driving force output from the transmission 22 is transmitted to the output rotating unit 324. For example, the output rotating unit 32 is configured to output the human driving force to the drive wheels. For example, the output rotating unit 32 is configured to transmit the driving force to the rear wheels via the transmission member 14.

[0089] For example, the assembly 20 further includes an output rotating body 34. For example, the output rotating body 34 is configured to output the driving force output from the transmission 22. For example, the output rotating body 34 is provided in the transmission path of the human driving force. For example, the output rotating body 34 constitutes a part of the transmission path of the human driving force. For example, the output rotating body 34 is coaxially arranged with the shaft member 24. For example, the output rotating body 34 is connected to the output rotating part 32.

[0090] For example, the output rotating body 34 is connected to the wheel via the transmission component 14. For example, the output rotating part 32 is configured to transmit the driving force to the rear wheel via the output rotating body 34 and the transmission component 14. For example, the output rotating part 32 includes a sprocket mounting part 32A. For example, the output rotating body 34 includes at least one of a sprocket, a pulley, and a bevel gear. For example, the transmission component 14 includes at least one of a chain, a belt, and a transmission shaft. For example, the sprocket is mounted on the sprocket mounting part 32A. For example, the sprocket mounting part 32A is configured to transmit the driving force to the rear wheel via the sprocket and the chain.

[0091] For example, the rotation direction of the output rotating body 34 is substantially the same as the rotation direction of the input rotating shaft 28. For example, the speed increaser 26 and the transmission 22 are configured so that if the input rotating shaft 28 rotates forward, the output rotating body 34 rotates forward. For example, the speed increaser 26 and the transmission 22 can be configured so that if the input rotating shaft 28 rotates backward, the output rotating body 34 rotates backward. A first one-way clutch can be provided on the transmission path of the human driving force between the input rotating shaft 28 and the output rotating body 34. The first one-way clutch includes at least one of a roller clutch, a dog clutch, and a sprag clutch. For example, the first one-way clutch is provided in at least one of the speed increaser 26 and the transmission 22. For example, the first one-way clutch is configured so that if the input rotating shaft 28 rotates backward, the relative rotation of the input rotating shaft 28 and the output rotating body 34 is allowed. For example, the forward rotation direction of the input rotating shaft 28 corresponds to the rotation direction of the input rotating shaft 28 when the human-powered vehicle moves forward. For example, the forward rotation direction of the output rotating body 34 corresponds to the rotation direction of the output rotating body 34 when the human-powered vehicle moves forward.

[0092] A second one-way clutch is preferably provided in the transmission path of the human driving force between the output rotating part 32 and the rear wheel. For example, if the output rotating body 34 rotates forward, the second one-way clutch rotates the driving wheel forward. For example, the second one-way clutch is configured to suppress the driving wheel from rotating backward if the output rotating body 34 rotates backward. For example, the second one-way clutch includes at least one of a roller clutch, a dog clutch, and a sprag clutch.

[0093] For example, the housing 30 is configured to be mounted on a frame of a human-powered vehicle. For example, the housing 30 has at least one frame mounting portion 30A. For example, at least one frame mounting portion 30A is mounted on the frame of the human-powered vehicle by bolts or the like. For example, at least one frame mounting portion 30A is arranged in plurality at intervals around the input rotation center axis C1. The plurality of frame mounting portions 30A are arranged at intervals of more than 90 degrees from each other around the input rotation center axis C1. For example, the housing 30 is configured to support the input rotation shaft 28. For example, the input rotation shaft 28 is provided on the housing 30 in a manner that allows relative rotation relative to the housing 30 around the input rotation center axis C1.

[0094] For example, the housing 30 is provided with at least a part of the power transmission component included in the assembly 20. For example, the power transmission component includes at least one of the transmission 22, the shaft component 24, the speed increaser 26, the input rotating shaft 28, the output rotating part 32, and the output rotating body 34. For example, the housing 30 accommodates the input rotating shaft 28, the speed increaser 26, and the transmission 22. For example, the housing 30 is provided with the shaft component 24 and the output rotating part 32.

[0095] For example, the assembly 20 has an internal space 20A surrounded by a housing 30. For example, the transmission 22, the shaft member 24, and the speed increaser 26 are arranged in the internal space 20A. For example, at least a portion of the input rotating shaft 28 and at least a portion of the output rotating portion 32 are arranged in the internal space 20A of the housing 30.

[0096] For example, at least one of the transmission 22, the speed increaser 26, the output rotating part 32, and the output rotating body 34 includes a part formed of a metal material. At least one of the transmission 22, the speed increaser 26, the output rotating part 32, and the output rotating body 34 may include a part formed of a resin material. In at least one of the transmission 22, the speed increaser 26, the output rotating part 32, and the output rotating body 34, at least a portion of the parts for constituting the transmission path of the human driving force is formed, for example, of a metal material. In at least one of the transmission 22, the speed increaser 26, the output rotating part 32, and the output rotating body 34, at least a portion of the parts for constituting the transmission path of the human driving force may be formed of a resin material.

[0097] For example, the speed increaser 26 includes at least one first planetary gear set 36. For example, the at least one first planetary gear set 36 is configured to be rotatable around the rotation center axis C2 of the shaft member 24. For example, the at least one first planetary gear set 36 is configured to be rotatable around the rotation center axis C2 of the shaft member 24. For example, the at least one first planetary gear set 36, the transmission 22, and the output rotating body 34 are arranged in the axial direction A1 of the shaft member 24 in the order of at least one first planetary gear set 36, the transmission 22, and the output rotating body 34.

[0098] For example, at least one first planetary gear set 36 includes at least one speed-increasing planetary gear 36A, a speed-increasing gear carrier 36B, at least one speed-increasing sun gear 36C, and at least one speed-increasing ring gear 36D. For example, at least one speed-increasing planetary gear 36A is arranged between at least one speed-increasing sun gear 36C and at least one speed-increasing ring gear 36D in the radial direction relative to the rotation center axis C2. For example, at least one speed-increasing sun gear 36C is meshed with at least one speed-increasing planetary gear 36A. For example, at least one speed-increasing ring gear 36D is meshed with at least one speed-increasing planetary gear 36A.

[0099] The speed increasing gear carrier 36B has at least one speed increasing gear carrier pin 36E. For example, the speed increasing gear carrier 36B supports at least one speed increasing planetary gear 36A through at least one speed increasing gear carrier pin 36E. At least one speed increasing gear carrier pin 36E has a first speed increasing pin end 36F as an end on one side in the axial direction A1, and a second speed increasing pin end 36G as an end on the other side. For example, the speed increasing gear carrier 36B is supported on the housing 30 in a manner that its rotation relative to the housing 30 is restricted. By restricting the rotation of the speed increasing gear carrier 36B relative to the housing 30, the revolution of the speed increasing planetary gear 36A around the speed increasing sun gear 36C is restricted.

[0100] For example, the speed increasing gear carrier 36B has a first speed increasing gear carrier portion 36H and a second speed increasing gear carrier portion 36K. For example, the first speed increasing pin end portion 36F is arranged on the first speed increasing gear carrier portion 36H. For example, the second speed increasing pin end portion 36G is arranged on the second speed increasing gear carrier portion 36K. For example, at least one speed increasing planetary gear 36A is arranged between the first speed increasing gear carrier portion 36H and the second speed increasing gear carrier portion 36K in the axial direction A1.

[0101] For example, the speed increaser 26 further includes a speed increaser unit 38 that is different from the at least one first planetary gear set 36. For example, the speed increaser unit 38 is configured to transmit the human driving force input to the input rotating shaft 28 to the at least one first planetary gear set 36.

[0102] For example, the speed increasing unit 38 includes: a first speed increasing gear 40, which is coaxially arranged with the input rotating shaft 28; and a second speed increasing gear 42, which is meshed with the first speed increasing gear 40 and is coaxially arranged with the shaft member 24. For example, the first speed increasing gear 40 includes a spur gear. For example, the second speed increasing gear 42 includes a spur gear. For example, the first speed increasing gear 40 rotates integrally with the input rotating shaft 28. For example, the pitch circle diameter of the first speed increasing gear 40 is larger than the pitch circle diameter of the second speed increasing gear 42. For example, the second speed increasing gear 42 rotates in a direction opposite to the rotation direction of the input rotating shaft 28. For example, at least one first planetary gear set 36 is arranged between the second speed increasing gear 42 and the transmission 22 on the axial direction A1 of the shaft member 24. The first speed increasing gear 40 and the second speed increasing gear 42 may each include a helical gear.

[0103] The speed increasing unit 38 may include a plurality of sprockets and a chain engaged with each of the plurality of sprockets to replace the first speed increasing gear 40 and the second speed increasing gear 42, or include a plurality of sprockets and a chain engaged with each of the plurality of sprockets on the basis of including the first speed increasing gear 40 and the second speed increasing gear 42. The speed increasing unit 38 may include a plurality of pulleys and a belt engaged with each of the plurality of pulleys to replace the first speed increasing gear 40 and the second speed increasing gear 42, or include a plurality of pulleys and a belt engaged with each of the plurality of pulleys on the basis of including the first speed increasing gear 40 and the second speed increasing gear 42.

[0104] For example, at least one first planetary gear set 36 includes a speed-increasing input portion 44 and a speed-increasing output portion 46. For example, the speed-increasing input portion 44 is formed integrally with the second speed-increasing gear 42. The speed-increasing input portion 44 can be integrally formed with the second speed-increasing gear 42 in a manner that forms a single component. In the case where the speed-increasing input portion 44 is integrally formed with the second speed-increasing gear 42, the assembly steps are simplified. For example, the second speed-increasing gear 42 is disposed at the outer periphery of the speed-increasing input portion 44. The rotational force accelerated by the speed-increasing unit 38 is input to the speed-increasing input portion 44. For example, the speed-increasing ratio of the speed increaser 26 is the ratio of the rotational speed of the speed-increasing output portion 46 to the rotational speed of the first speed-increasing gear 40.

[0105] For example, the speed-increasing input portion 44 includes a speed-increasing ring gear 36D. For example, the speed-increasing ring gear 36D is provided at the inner circumference of the speed-increasing input portion 44. For example, the speed-increasing ring gear 36D is provided at a portion of the speed-increasing input portion 44 different from the second speed-increasing gear 42 in the axial direction A1. For example, the pitch circle diameter of the speed-increasing ring gear 36D is larger than the pitch circle diameter of the second speed-increasing gear 42. For example, the speed-increasing output portion 46 includes a speed-increasing sun gear 36C.

[0106] For example, the speed-increasing input portion 44 and the speed-increasing output portion 46 are configured to rotate in opposite directions. For example, since the speed-increasing gear frame 36B is restricted from rotating relative to the housing 30, the rotational force input to the speed-increasing ring gear 36D is output from the speed-increasing sun gear 36C as a rotational force in the opposite direction. For example, the rotational direction of the speed-increasing input portion 44 is the same as the rotational direction of the second speed-increasing gear 42. Since the second speed-increasing gear 42 rotates in a direction opposite to the rotational direction of the input rotating shaft 28, the speed-increasing input portion 44 rotates, for example, in a direction opposite to the rotational direction of the input rotating shaft 28. Therefore, the rotational direction of the speed-increasing output portion 46 around the rotational center axis C2 of the shaft member 24 is the same as the rotational direction around the input rotational center axis C1 of the input rotating shaft 28.

[0107] For example, the speed increase ratio of the speed increaser 26 is greater than 3 and less than 20. For example, the speed increase ratio of the speed increaser 26 is greater than 5 and less than 18. For example, the speed increase ratio of the speed increaser 26 is greater than 7 and less than 16. For example, the speed increase ratio of the speed increaser 26 is greater than 9 and less than 14. For example, the speed increase ratio of the speed increaser 26 is 9.4. The speed increase ratio of the speed increaser 26 may be greater than 3 and less than 11. The speed increase ratio of the speed increaser 26 may also be greater than 6 and less than 20. For example, the speed increase ratio of the speed increaser 26 is 6.032.

[0108] For example, the transmission 22 for the human-powered vehicle is configured to switch the gear of the human-powered vehicle in stages. For example, the transmission 22 has a plurality of gears. For example, the gear ratios of the plurality of gears are different from each other. The gear ratio of the transmission 22 is changed by changing the gear from one gear to another gear.

[0109] For example, the transmission 22 includes at least one second planetary gear set 48. For example, the transmission 22 includes a shaft member 24, a first planetary gear unit 50 provided on the shaft member 24, and a second planetary gear unit 52 provided on the shaft member 24. For example, the at least one second planetary gear set 48 includes the first planetary gear unit 50 and the second planetary gear unit 52.

[0110] For example, at least one second planetary gear set 48 includes a plurality of variable-speed planetary gears 48A. For example, at least one second planetary gear set 48 includes a plurality of variable-speed gear carriers 48B. For example, the plurality of variable-speed gear carriers 48B support the plurality of variable-speed planetary gears 48A. For example, at least one second planetary gear set 48 includes a plurality of variable-speed sun gears 48C. For example, the plurality of variable-speed sun gears 48C mesh with the plurality of variable-speed planetary gears 48A. For example, at least one second planetary gear set 48 includes a plurality of variable-speed ring gears 48D. For example, the plurality of variable-speed ring gears 48D mesh with the plurality of variable-speed planetary gears 48A.

[0111] For example, the transmission 22 further includes an input rotating shaft 28. For example, the input rotating shaft 28 is arranged in parallel with the shaft member 24, and is arranged at a distance from the shaft member 24 in the radial direction of the input rotating shaft 28.

[0112] For example, the transmission 22 further includes a housing 30, and the housing 30 can be mounted on a frame of a human-powered vehicle. For example, the transmission 22 is provided in the housing 30. For example, the speed change rotation center axis of the transmission 22 is substantially the same as the rotation center axis C2 of the shaft member 24.

[0113] For example, the transmission 22 further includes an input rotating part 54 and an output rotating part 32. For example, the input rotating part 54 is configured to transmit the rotational force from the speed increasing output part 46 to the transmission 22. For example, the input rotating part 54 includes a first input rotating part 54A and a second input rotating part 54B. For example, the first input rotating part 54A and the second input rotating part 54B include gears meshing with each other. For example, the first input rotating part 54A is formed as a whole with the speed increasing output part 46. For example, the second input rotating part 54B is formed as a whole with the first gear rack part 72.

[0114] For example, the transmission 22 is configured so that the ratio of the rotation speed of the output rotating portion 32 to the rotation speed of the input rotating portion 54 becomes a ratio corresponding to the gear ratio of the transmission 22. For example, at least one second planetary gear set 48 is configured to output a rotational force to the output rotating portion 32. For example, the transmission 22 is configured to be connected to the rear wheel of the human-powered vehicle via at least one of a chain, a belt, and a transmission shaft in a state where the housing 30 is mounted on the vehicle frame.

[0115] For example, the speed ratio of the transmission 22 is the ratio of the rotational speed of the output rotating part 32 to the rotational speed of the input rotating part 54. For example, the transmission 22 is configured to be able to change the speed ratio between a minimum speed ratio and a maximum speed ratio. For example, the minimum speed ratio is a speed ratio corresponding to a speed reduction. For example, the maximum speed ratio is a speed ratio corresponding to an speed increase. The minimum speed ratio is, for example, greater than 0 and less than 1. The maximum speed ratio is, for example, greater than 1 and less than 10. The smaller the minimum speed ratio, the greater the deceleration amplitude when the speed ratio is the minimum speed ratio. The larger the maximum speed ratio, the greater the speed increase amplitude when the speed ratio is the maximum speed ratio.

[0116] For example, the plurality of gears have a minimum gear and a maximum gear. For example, the speed ratio of the minimum gear is the minimum speed ratio. For example, the speed ratio of the maximum gear is the maximum speed ratio. For example, the ratio of the maximum speed ratio to the minimum speed ratio is greater than 1.2 and less than 8. For example, the ratio of the maximum speed ratio to the minimum speed ratio is greater than 1.7 and less than 7. For example, the ratio of the maximum speed ratio to the minimum speed ratio is greater than 2.4 and less than 6. For example, the ratio of the maximum speed ratio to the minimum speed ratio is 2.4.

[0117] For example, at least one second planetary gear set 48 is configured to be able to change the speed ratio by three or more stages. For example, the plurality of speed stages include three or more speed stages. For example, the speed ratios of the three or more speed stages are different from each other.

[0118] For example, the first planetary gear unit 50 includes at least one first planetary gear 56 , a first carrier 58 , at least one first sun gear 60 , and at least one first ring gear 62 .

[0119] For example, the second planetary gear unit 52 includes at least one second planetary gear 64 , a second carrier 66 , at least one second sun gear 68 , and at least one second ring gear 70 .

[0120] For example, the plurality of speed-changing planetary gears 48A include at least one first planetary gear 56. For example, the at least one first planetary gear 56 includes a plurality of first planetary gears 56. For example, the at least one first planetary gear 56 includes a plurality of first planetary gears 56 arranged at intervals around the rotation center axis C2 of the shaft member 24. Each of the plurality of first planetary gears 56 is arranged at intervals around the rotation center axis C2 of the shaft member 24. The number of the plurality of first planetary gears 56 is, for example, greater than or equal to 2 and less than or equal to 8. In the present embodiment, the number of the plurality of first planetary gears 56 is 4.

[0121] For example, at least one first planetary gear 56 includes a plurality of first planetary gears 56 having different diameters. The plurality of first planetary gears 56 include a first speed-changing planetary gear 56A and a second speed-changing planetary gear 56B, the pitch circle diameter of the second speed-changing planetary gear 56B being larger than the pitch circle diameter of the first speed-changing planetary gear 56A. For example, the first speed-changing planetary gear 56A and the second speed-changing planetary gear 56B are integrally formed. The first speed-changing planetary gear 56A and the second speed-changing planetary gear 56B may be formed as separate bodies and rotate as one.

[0122] For example, the plurality of speed-changing planetary gears 48A include at least one second planetary gear 64. For example, the at least one second planetary gear 64 includes a plurality of second planetary gears 64. For example, the at least one second planetary gear 64 includes a plurality of second planetary gears 64 arranged at intervals around the rotation center axis C2 of the shaft member 24. Each of the plurality of second planetary gears 64 is arranged at intervals around the rotation center axis C2 of the shaft member 24. The number of the plurality of second planetary gears 64 is, for example, greater than or equal to 2 and less than or equal to 8. In the present embodiment, the number of the plurality of second planetary gears 64 is 4.

[0123] For example, at least one second planetary gear 64 includes a plurality of second planetary gears 64 having different diameters. At least one second planetary gear 64 includes a third speed change planetary gear 64A and a fourth speed change planetary gear 64B, and the pitch circle diameter of the fourth speed change planetary gear 64B is larger than the pitch circle diameter of the third speed change planetary gear 64A. For example, the third speed change planetary gear 64A and the fourth speed change planetary gear 64B are formed as one body. The third speed change planetary gear 64A and the fourth speed change planetary gear 64B may be formed as separate bodies and rotate as one body.

[0124] For example, at least the gear with the largest diameter among the plurality of first planetary gears 56 is arranged to overlap with at least one second planetary gear 64 when viewed from the axial direction A1 of the shaft member 24. For example, the gear with the largest diameter among the plurality of first planetary gears 56 includes the second speed change planetary gear 56B. Since at least the gear with the largest diameter among the plurality of first planetary gears 56 is arranged to overlap with at least one second planetary gear 64 when viewed from the axial direction A1, the size of the transmission 22 in the radial direction relative to the rotation center axis C2 can be reduced. Since at least the gear with the largest diameter among the plurality of first planetary gears 56 is arranged to overlap with at least one second planetary gear 64 when viewed from the axial direction A1, the size of the housing 30 in the radial direction of the input rotation shaft 28 can be reduced.

[0125] For example, all the gears of the first planetary gears 56 may be arranged to overlap at least one of the second planetary gears 64 when viewed from the axial direction A1. All the gears of the first planetary gears 56 may be arranged to not overlap any of the second planetary gears 64 when viewed from the axial direction A1.

[0126] For example, at least the gear with the largest diameter among the plurality of second planetary gears 64 is configured to overlap with at least one first planetary gear 56 when viewed from the axial direction A1 of the shaft member 24. For example, the gear with the largest diameter among the plurality of second planetary gears 64 includes the fourth speed change planetary gear 64B. Since at least the gear with the largest diameter among the plurality of second planetary gears 64 is configured to overlap with at least one first planetary gear 56 when viewed from the axial direction A1, the size of the transmission 22 in the radial direction relative to the rotation center axis C2 can be reduced. Since at least the gear with the largest diameter among the plurality of second planetary gears 64 is configured to overlap with at least one first planetary gear 56 when viewed from the axial direction A1, the size of the housing 30 in the radial direction of the input rotation shaft 28 can be reduced.

[0127] For example, all the gears of the second planetary gears 64 may be arranged to overlap at least one of the first planetary gears 56 when viewed from the axial direction A1. All the gears of the second planetary gears 64 may be arranged to not overlap any of the first planetary gears 56 when viewed from the axial direction A1.

[0128] For example, the plurality of transmission carriers 48B include a first carrier 58. For example, the first carrier 58 has a first carrier portion 72 and a second carrier portion 74. For example, the input rotating portion 54 is connected to the first carrier 58. For example, the input rotating portion 54 and the first carrier portion 72 are formed integrally.

[0129] For example, the first gear frame 58 has at least one first gear frame pin 58A and supports at least one first planetary gear 56 through at least one first gear frame pin 58A. For example, at least one first planetary gear 56 is arranged between the first gear frame portion 72 and the second gear frame portion 74 in the axial direction A1 of the shaft member 24. For example, at least one first planetary gear 56 is rotatably supported by at least one first gear frame pin 58A. At least one first planetary gear 56 may also be rotatably supported by at least one first gear frame pin 58A via a bearing.

[0130] For example, at least one first gear frame pin 58A is supported by the first gear frame portion 72 and the second gear frame portion 74. For example, at least one first gear frame pin 58A includes a plurality of first gear frame pins 58A. Each of the plurality of first gear frame pins 58A has a first pin end 58B as an end on one side in the axial direction A1, and a second pin end 58C as an end on the other side. For example, the first pin end 58B is supported by the first gear frame portion 72. For example, the second pin end 58C is supported by the second gear frame portion 74.

[0131] For example, the first pin end 58B may be fixed to the first gear carrier portion 72 and the second pin end 58C may be fixed to the second gear carrier portion 74. For example, the first pin end 58B may be rotatably supported on the first gear carrier portion 72, and the second pin end 58C may be rotatably supported on the second gear carrier portion 74. In the case where the first pin end 58B is rotatably supported on the first gear carrier portion 72 and the second pin end 58C is rotatably supported on the second gear carrier portion 74, at least one first planetary gear 56 may be non-rotatably supported on at least one first gear carrier pin 58A.

[0132] For example, the plurality of transmission gear carriers 48B include a second gear carrier 66. For example, the second gear carrier 66 has a first gear carrier portion 72 and a second gear carrier portion 74. For example, a portion of the first gear carrier 58 is formed integrally with a portion of the second gear carrier 66. For example, a portion of the first gear carrier 58 is formed integrally with a portion of the second gear carrier 66. For example, the first gear carrier portion 72 is a portion of the first gear carrier 58 and a portion of the second gear carrier 66. For example, the second gear carrier portion 74 is a portion of the first gear carrier 58 and a portion of the second gear carrier 66.

[0133] For example, the second gear carrier 66 has at least one second gear carrier pin 66A and supports at least one second planetary gear 64 through at least one second gear carrier pin 66A. For example, the at least one second planetary gear 64 is arranged between the first gear carrier portion 72 and the second gear carrier portion 74 in the axial direction A1 of the shaft member 24. For example, the at least one second planetary gear 64 is rotatably supported by the at least one second gear carrier pin 66A. The at least one second planetary gear 64 can be rotatably supported by the at least one second gear carrier pin 66A via a bearing.

[0134] For example, at least one second gear frame pin 66A is supported by the first gear frame portion 72 and the second gear frame portion 74. For example, at least one second gear frame pin 66A includes a plurality of second gear frame pins 66A. Each of the plurality of second gear frame pins 66A has a third pin end 66B as an end on one side in the axial direction A1, and a fourth pin end 66C as an end on the other side. For example, the third pin end 66B is supported on the first gear frame portion 72. For example, the fourth pin end 66C is supported on the second gear frame portion 74. For example, the third pin end 66B can be fixed to the first gear frame portion 72 and the fourth pin end 66C can be fixed to the second gear frame portion 74. For example, the third pin end 66B can be rotatably supported on the first gear frame portion 72, and the fourth pin end 66C can be rotatably supported on the second gear frame portion 74. When the third pin end 66B is rotatably supported on the first gear frame portion 72 and the fourth pin end 66C is rotatably supported on the second gear frame portion 74, at least one second planetary gear 64 can be non-rotatably supported on at least one second gear frame pin 66A.

[0135] For example, the second gear rack 66 may include at least one of the first gear rack portion 72 and the second gear rack portion 74, and the third gear rack portion 76. In the case where the second gear rack 66 includes at least one of the first gear rack portion 72 and the second gear rack portion 74 and the third gear rack portion 76, at least one second gear rack pin 66A is supported by at least one of the first gear rack portion 72 and the second gear rack portion 74 and the third gear rack portion 76. For example, the second gear rack portion 74 is disposed between the first gear rack portion 72 and the third gear rack portion 76 in the axial direction A1 of the shaft member 24. For example, the middle portion of at least one second gear rack pin 66A is supported by the second gear rack portion 74.

[0136] When the second gear carrier 66 includes at least one of the first gear carrier portion 72 and the second gear carrier portion 74 and the third gear carrier portion 76, for example, the third pin end portion 66B is supported by the first gear carrier portion 72 and the fourth pin end portion 66C is supported by the third gear carrier portion 76. For example, at least one first planetary gear 56 is disposed between the first gear carrier portion 72 and the second gear carrier portion 74. For example, at least one second planetary gear 64 is disposed between the second gear carrier portion 74 and the third gear carrier portion 76.

[0137] For example, at least one first gear carrier pin 58A and at least one second gear carrier pin 66A are formed as different components, and are arranged at intervals from at least one second gear carrier pin 66A. For example, at least one first gear carrier pin 58A includes a plurality of first gear carrier pins 58A corresponding to a plurality of first planetary gears 56. For example, at least one second gear carrier pin 66A includes a plurality of second gear carrier pins 66A corresponding to a plurality of second planetary gears 64. For example, a plurality of first gear carrier pins 58A and a plurality of second gear carrier pins 66A are alternately arranged at equal intervals around the rotation center axis C2 of the shaft component 24.

[0138] For example, in a plane orthogonal to the rotation center axis C2 of the shaft member 24, the distance between the at least one first gear carrier pin 58A and the rotation center axis C2 of the shaft member 24 is equal to the distance between the at least one second gear carrier pin 66A and the rotation center axis C2 of the shaft member 24. In a plane orthogonal to the rotation center axis C2 of the shaft member 24, the distance between the at least one first gear carrier pin 58A and the rotation center axis C2 of the shaft member 24 may be different from the distance between the at least one second gear carrier pin 66A and the rotation center axis C2 of the shaft member 24.

[0139] For example, at least one first gear carrier pin 58A and at least one second gear carrier pin 66A are configured to overlap each other on a first plane orthogonal to the shaft member 24. For example, the first plane is a plane orthogonal to the shaft member 24 and including at least one first gear carrier pin 58A and at least one second gear carrier pin 66A. For example, the entire plane of the plane orthogonal to the shaft member 24 and including at least one first gear carrier pin 58A and at least one second gear carrier pin 66A corresponds to the first plane. Fig.15 A cross-sectional view of the transmission 22 in an example of a first plane is shown.

[0140] For example, the plurality of speed-changing sun gears 48C include at least one first sun gear 60 and at least one second sun gear 68. For example, the at least one first sun gear 60 meshes with the at least one first planetary gear 56. For example, the at least one first sun gear 60 includes a first speed-changing sun gear 60A. For example, the first speed-changing sun gear 60A meshes with the second speed-changing planetary gear 56B.

[0141] For example, at least one second sun gear 68 is meshed with at least one second planetary gear 64. For example, at least one second sun gear 68 includes a second speed-changing sun gear 68A. For example, the second speed-changing sun gear 68A is meshed with a third speed-changing planetary gear 64A. For example, the rotation center axis of at least one first sun gear 60 and the rotation center axis of at least one second sun gear 68 are substantially the same as the rotation center axis C2 of the shaft member 24.

[0142] For example, at least one first sun gear 60 and at least one second sun gear 68 are formed as one body. For example, the first speed change sun gear 60A and the second speed change sun gear 68A are formed as one body. At least one first sun gear 60 and at least one second sun gear 68 can be formed as separate bodies and rotate as one body.

[0143] For example, at least one first sun gear 60 and at least one second sun gear 68 are configured to be formed separately from the shaft component 24 and rotate integrally with the shaft component 24. For example, the first speed change sun gear 60A and the second speed change sun gear 68A are formed on the outer periphery of a first cylinder component. For example, the first engaging portion 71A is formed on the inner periphery of the first cylinder component. For example, the first engaging portion 71A includes a spline or a serration. For example, the first engaging portion 71A engages with the first shaft component engaging portion 24A of the shaft component 24. For example, the first shaft component engaging portion 24A includes a spline or a serration. For example, the first shaft component engaging portion 24A is integrally formed with the shaft component 24. At least one first sun gear 60 and at least one second sun gear 68 can be integrally formed with the shaft component 24.

[0144] For example, at least one first sun gear 60 and at least one second sun gear 68 are configured to rotate integrally in at least a first direction B1 around the rotation center axis C2 of the shaft member 24. At least one first sun gear 60 and at least one second sun gear 68 can be configured to rotate integrally in a second direction B2 opposite to the first direction B1 around the rotation center axis C2 of the shaft member 24.

[0145] For example, the plurality of speed ring gears 48D includes at least one first ring gear 62. For example, the at least one first ring gear 62 is meshed with at least one first planetary gear 56. For example, the at least one first ring gear 62 includes a plurality of first ring gears 62 that can rotate independently of each other. For example, the plurality of first planetary gears 56 are respectively meshed with the plurality of first ring gears 62.

[0146] For example, the plurality of first gear rings 62 include a first speed change gear ring 62A and a second speed change gear ring 62B. For example, the first speed change gear ring 62A meshes with the first speed change planetary gear 56A. For example, the second speed change gear ring 62B meshes with the second speed change planetary gear 56B.

[0147] For example, the plurality of speed ring gears 48D includes at least one second ring gear 70. For example, the at least one second ring gear 70 is meshed with at least one second planetary gear 64. For example, the at least one second ring gear 70 includes a plurality of second ring gears 70 that can rotate independently of each other. For example, the plurality of second planetary gears 64 are respectively meshed with the plurality of second ring gears 70.

[0148] For example, the plurality of second gear rings 70 include a third speed change gear ring 70A and a fourth speed change gear ring 70B. For example, the third speed change gear ring 70A meshes with the third speed change planetary gear 64A. For example, the fourth speed change gear ring 70B meshes with the fourth speed change planetary gear 64B.

[0149] For example, the transmission 22 further includes a third planetary gear unit 77 provided on the shaft member 24. For example, the transmission 22 includes a fourth planetary gear unit 82 provided on the shaft member 24, and a fifth planetary gear unit 87 provided on the shaft member 24. For example, the at least one second planetary gear set 48 further includes the third planetary gear unit 77, the fourth planetary gear unit 82, and the fifth planetary gear unit 87.

[0150] For example, the third planetary gear unit 77 includes at least one third planetary gear 78 , a third carrier 79 , at least one third sun gear 80 , and at least one third ring gear 81 .

[0151] For example, the fourth planetary gear unit 82 includes at least one fourth planetary gear 83 , a fourth carrier 84 , at least one fourth sun gear 85 , and at least one fourth ring gear 86 .

[0152] For example, the fifth planetary gear unit 87 includes at least one fifth planetary gear 88 , a fifth carrier 89 , at least one fifth sun gear 90 , and at least one fifth ring gear 91 .

[0153] For example, the plurality of speed-changing planetary gears 48A include at least one third planetary gear 78. For example, the at least one third planetary gear 78 includes a plurality of third planetary gears 78, and the plurality of third planetary gears 78 are arranged at intervals around the rotation center axis C2 of the shaft member 24. Each of the plurality of third planetary gears 78 is arranged at intervals around the rotation center axis C2 of the shaft member 24. For example, the number of the plurality of third planetary gears 78 is greater than or equal to 2 and less than or equal to 8. In the present embodiment, the number of the plurality of third planetary gears 78 is 4.

[0154] For example, the plurality of third planetary gears 78 include a fifth speed planetary gear 78A and a sixth speed planetary gear 78B, and the pitch circle diameter of the sixth speed planetary gear 78B is smaller than the pitch circle diameter of the fifth speed planetary gear 78A. For example, the fifth speed planetary gear 78A and the sixth speed planetary gear 78B are integrally formed. The fifth speed planetary gear 78A and the sixth speed planetary gear 78B can be formed as separate bodies and rotate as a whole.

[0155] For example, the plurality of speed-changing planetary gears 48A include at least one fourth planetary gear 83. For example, the at least one fourth planetary gear 83 includes a plurality of fourth planetary gears 83, and the plurality of fourth planetary gears 83 are arranged at intervals around the rotation center axis C2 of the shaft member 24. Each of the plurality of fourth planetary gears 83 is arranged at intervals around the rotation center axis C2 of the shaft member 24. For example, the number of the plurality of fourth planetary gears 83 is greater than 2 and less than 8. In the present embodiment, the number of the plurality of fourth planetary gears 83 is 4. For example, the plurality of fourth planetary gears 83 includes a seventh speed-changing planetary gear 83A. For example, the pitch circle diameter of the seventh speed-changing planetary gear 83A is greater than the pitch circle diameter of the sixth speed-changing planetary gear 78B and less than the pitch circle diameter of the fifth speed-changing planetary gear 78A.

[0156] For example, the plurality of speed-changing planetary gears 48A include at least one fifth planetary gear 88. For example, the at least one fifth planetary gear 88 includes a plurality of fifth planetary gears 88, and the plurality of fifth planetary gears 88 are arranged at intervals around the rotation center axis C2 of the shaft member 24. Each of the plurality of fifth planetary gears 88 is arranged at intervals around the rotation center axis C2 of the shaft member 24. For example, the number of the plurality of fifth planetary gears 88 is greater than or equal to 2 and less than or equal to 8. In the present embodiment, the number of the plurality of fifth planetary gears 88 is 4.

[0157] For example, the plurality of fifth planetary gears 88 include an eighth speed planetary gear 88A and a ninth speed planetary gear 88B, and the pitch circle diameter of the ninth speed planetary gear 88B is larger than the pitch circle diameter of the eighth speed planetary gear 88A. For example, the eighth speed planetary gear 88A and the ninth speed planetary gear 88B are integrally formed. The eighth speed planetary gear 88A and the ninth speed planetary gear 88B can be formed as separate bodies and rotate as one.

[0158] For example, at least the gear with the largest diameter among the at least one third planetary gear 78 is configured to overlap with at least one of the at least one first planetary gear 56, the at least one second planetary gear 64, the at least one fourth planetary gear 83, and the at least one fifth planetary gear 88 when viewed from the axial direction A1 of the shaft member 24. For example, the gear with the largest diameter among the at least one third planetary gear 78 includes the fifth speed-change planetary gear 78A. All gears of the at least one third planetary gear 78 may be configured not to overlap with any of the at least one first planetary gear 56, the at least one second planetary gear 64, the at least one fourth planetary gear 83, and the at least one fifth planetary gear 88 when viewed from the axial direction A1.

[0159] For example, at least the gear with the largest diameter among the at least one fourth planetary gear 83 is configured to overlap with at least one of the at least one first planetary gear 56, the at least one second planetary gear 64, the at least one third planetary gear 78, and the at least one fifth planetary gear 88 when viewed from the axial direction A1. The gear with the largest diameter among the at least one fourth planetary gear 83 includes the seventh speed planetary gear 83A. All gears of the at least one fourth planetary gear 83 may be configured not to overlap with any of the at least one first planetary gear 56, the at least one second planetary gear 64, the at least one third planetary gear 78, and the at least one fifth planetary gear 88 when viewed from the axial direction A1.

[0160] For example, at least the gear with the largest diameter among the at least one fifth planetary gear 88 is configured to overlap with at least one of the at least one first planetary gear 56, the at least one second planetary gear 64, the at least one third planetary gear 78, and the at least one fourth planetary gear 83 when viewed from the axial direction A1. For example, the gear with the largest diameter among the at least one fifth planetary gear 88 includes the ninth speed-change planetary gear 88B. All gears of the at least one fifth planetary gear 88 may be configured not to overlap with any of the at least one first planetary gear 56, the at least one second planetary gear 64, the at least one third planetary gear 78, and the at least one fourth planetary gear 83 when viewed from the axial direction A1.

[0161] For example, the plurality of transmission carriers 48B further include a third carrier 79. For example, the third carrier 79 includes a third carrier portion 76 and a fourth carrier portion 92. For example, at least one third planetary gear 78 is disposed between the third carrier portion 76 and the fourth carrier portion 92 in the axial direction A1.

[0162] For example, the third gear frame 79 has at least one third gear frame pin 79A and supports at least one third planetary gear 78 through at least one third gear frame pin 79A. For example, at least one third gear frame pin 79A may be integrally formed with at least one first gear frame pin 58A or at least one second gear frame pin 66A. For example, at least one third planetary gear 78 is rotatably supported on at least one third gear frame pin 79A. At least one third planetary gear 78 may be rotatably supported on at least one third gear frame pin 79A via a bearing.

[0163] For example, at least one third gear frame pin 79A is supported by the third gear frame portion 76 and the fourth gear frame portion 92. For example, at least one third gear frame pin 79A includes a plurality of third gear frame pins 79A. Each of the plurality of third gear frame pins 79A has a fifth pin end 79B as an end on one side in the axial direction A1, and a sixth pin end 79C as an end on the other side. For example, the fifth pin end 79B is supported by the third gear frame portion 76. For example, the sixth pin end 79C is supported by the fourth gear frame portion 92.

[0164] For example, the fifth pin end 79B may be fixed to the third gear rack portion 76 and the sixth pin end 79C may be fixed to the fourth gear rack portion 92. For example, the fifth pin end 79B may be rotatably supported on the third gear rack portion 76 and the sixth pin end 79C may be rotatably supported on the fourth gear rack portion 92. In the case where the fifth pin end 79B is fixed to the third gear rack portion 76 and the sixth pin end 79C is rotatably supported on the fourth gear rack portion 92, at least one third planetary gear 78 may be respectively supported on at least one third gear rack pin 79A in a non-rotatable manner.

[0165] For example, the plurality of transmission carriers 48B further include a fourth carrier 84. For example, the fourth carrier 84 includes a third carrier portion 76 and a fourth carrier portion 92. For example, at least one fourth planetary gear 83 is disposed between the third carrier portion 76 and the fourth carrier portion 92 in the axial direction A1.

[0166] For example, the fourth gear carrier 84 has at least one fourth gear carrier pin 84A and supports at least one fourth planetary gear 83 through at least one fourth gear carrier pin 84A. For example, at least one fourth planetary gear 83 is rotatably supported on at least one fourth gear carrier pin 84A. At least one fourth planetary gear 83 may be rotatably supported on at least one fourth gear carrier pin 84A via a bearing.

[0167] For example, at least one fourth gear frame pin 84A is supported by the third gear frame portion 76 and the fourth gear frame portion 92. For example, at least one fourth gear frame pin 84A includes a plurality of fourth gear frame pins 84A. Each of the plurality of fourth gear frame pins 84A has a seventh pin end 84B as an end on one side in the axial direction A1, and an eighth pin end 84C as an end on the other side. For example, the seventh pin end 84B is supported by the third gear frame portion 76. For example, the eighth pin end 84C is supported by the fourth gear frame portion 92.

[0168] For example, the seventh pin end 84B may be fixed to the third gear rack portion 76 and the eighth pin end 84C may be fixed to the fourth gear rack portion 92. For example, the seventh pin end 84B may be rotatably supported on the third gear rack portion 76 and the eighth pin end 84C may be rotatably supported on the fourth gear rack portion 92. In the case where the seventh pin end 84B is rotatably supported on the third gear rack portion 76 and the eighth pin end 84C is rotatably supported on the fourth gear rack portion 92, at least one fourth planetary gear 83 may be non-rotatably supported on at least one fourth gear rack pin 84A.

[0169] For example, the plurality of transmission gear racks 48B further include a fifth gear rack 89. For example, the fifth gear rack 89 includes a third gear rack portion 76, a fourth gear rack portion 92, and a fifth gear rack portion 93. For example, the output rotating portion 32 is connected to the fifth gear rack 89. For example, the output rotating portion 32 is integrally formed with the fifth gear rack portion 93. The output rotating portion 32 and the fifth gear rack portion 93 may be configured to be formed separately and rotate integrally.

[0170] For example, the fifth gear carrier 89 has at least one fifth gear carrier pin 89A and supports at least one fifth planetary gear 88 through at least one fifth gear carrier pin 89A. For example, at least one fifth planetary gear 88 is arranged between the fourth gear carrier portion 92 and the fifth gear carrier portion 93 in the axial direction A1. For example, at least one fifth planetary gear 88 is rotatably supported by at least one fifth gear carrier pin 89A. At least one fifth planetary gear 88 can be rotatably supported by at least one fifth gear carrier pin 89A via bearings, respectively.

[0171] For example, the third gear rack 79 is the same gear rack as the fourth gear rack 84. The third gear rack 79 may be a gear rack different from the fourth gear rack 84. For example, a portion of the third gear rack 79 is formed integrally with a portion of the fifth gear rack 89. A portion of the fourth gear rack 84 is formed integrally with a portion of the fifth gear rack 89. A portion of the fourth gear rack 84 may be formed integrally with a portion of the fifth gear rack 89.

[0172] For example, at least one fifth gear frame pin 89A is supported by the third gear frame portion 76, the fourth gear frame portion 92, and the fifth gear frame portion 93. For example, at least one fifth gear frame pin 89A includes a plurality of fifth gear frame pins 89A. Each of the plurality of fifth gear frame pins 89A has a ninth pin end 89B as an end on one side in the axial direction A1, and a tenth pin end 89C as an end on the other side. For example, the ninth pin end 89B is supported on the third gear frame portion 76. For example, the tenth pin end 89C is supported on the fifth gear frame portion 93. For example, the fourth gear frame portion 92 is arranged between the third gear frame portion 76 and the fifth gear frame portion 93. For example, the fourth gear frame portion 92 supports a portion between the third gear frame portion 76 and the fifth gear frame portion 93 of at least one fifth gear frame pin 89A.

[0173] For example, the ninth pin end 89B may be fixed to the third gear rack portion 76 and the tenth pin end 89C may be fixed to the fifth gear rack portion 93. For example, the ninth pin end 89B may be rotatably supported on the third gear rack portion 76 and the tenth pin end 89C may be rotatably supported on the fifth gear rack portion 93. In the case where the ninth pin end 89B is rotatably supported on the third gear rack portion 76 and the tenth pin end 89C is rotatably supported on the fifth gear rack portion 93, at least one fifth planetary gear 88 may be non-rotatably supported on at least one fifth gear rack pin 89A.

[0174] For example, at least one third gear frame pin 79A and at least one fifth gear frame pin 89A are formed as different parts, and are arranged at intervals from at least one fifth gear frame pin 89A. For example, at least one third gear frame pin 79A includes a plurality of third gear frame pins 79A corresponding to a plurality of third planetary gears 78. For example, at least one fifth gear frame pin 89A includes a plurality of fifth gear frame pins 89A corresponding to a plurality of fifth planetary gears 88. For example, a plurality of third gear frame pins 79A and a plurality of fifth gear frame pins 89A are alternately arranged at equal intervals around the rotation center axis C2 of the shaft member 24.

[0175] For example, at least one fourth gear carrier pin 84A and at least one fifth gear carrier pin 89A are formed as different parts, and are arranged at intervals from at least one fifth gear carrier pin 89A. For example, at least one fourth gear carrier pin 84A includes a plurality of fourth gear carrier pins 84A corresponding to the plurality of fourth planetary gears 83. For example, the plurality of fourth gear carrier pins 84A and the plurality of fifth gear carrier pins 89A are alternately arranged at equal intervals around the rotation center axis C2 of the shaft member 24.

[0176] On a plane orthogonal to the rotation center axis C2 of the shaft member 24, the distance between at least one third gear frame pin 79A and the rotation center axis C2 of the shaft member 24 is, for example, substantially equal to the distance between at least one fifth gear frame pin 89A and the rotation center axis C2 of the shaft member 24. On a plane orthogonal to the rotation center axis C2 of the shaft member 24, the distance between at least one third gear frame pin 79A and the rotation center axis C2 of the shaft member 24 may be different from the distance between at least one fifth gear frame pin 89A and the rotation center axis C2 of the shaft member 24.

[0177] On a plane orthogonal to the rotation center axis C2 of the shaft member 24, the distance between at least one fourth gear frame pin 84A and the rotation center axis C2 of the shaft member 24 is, for example, substantially equal to the distance between at least one fifth gear frame pin 89A and the rotation center axis C2 of the shaft member 24. On a plane orthogonal to the rotation center axis C2 of the shaft member 24, the distance between at least one fourth gear frame pin 84A and the rotation center axis C2 of the shaft member 24 may be different from the distance between at least one fifth gear frame pin 89A and the rotation center axis C2 of the shaft member 24.

[0178] For example, the third gear frame pin 79A and the at least one fifth gear frame pin 89A are configured to overlap each other on the second plane orthogonal to the shaft member 24. For example, the at least one fourth gear frame pin 84A and the at least one fifth gear frame pin 89A are configured to overlap each other on the second plane orthogonal to the shaft member 24. For example, the second plane is a plane orthogonal to the shaft member 24 and including the at least one fourth gear frame pin 84A and the at least one fifth gear frame pin 89A. For example, the entire plane of the plane orthogonal to the shaft member 24 and including the at least one fourth gear frame pin 84A and the at least one fifth gear frame pin 89A corresponds to the second plane. Fig.16 A cross-sectional view of the transmission 22 in an example of the second plane is shown.

[0179] For example, the plurality of speed-changing sun gears 48C include at least one third sun gear 80, at least one fourth sun gear 85, and at least one fifth sun gear 90. For example, the rotation center axis of at least one third sun gear 80, the rotation center axis of at least one fourth sun gear 85, and the rotation center axis of at least one fifth sun gear 90 are substantially the same as the rotation center axis C2 of the shaft member 24.

[0180] For example, at least one third sun gear 80 meshes with at least one third planetary gear 78. For example, at least one third sun gear 80 includes a third speed-changing sun gear 80A. For example, the third speed-changing sun gear 80A meshes with the sixth speed-changing planetary gear 78B.

[0181] For example, at least one fourth sun gear 85 meshes with at least one fourth planetary gear 83. For example, at least one fourth sun gear 85 includes a fourth speed-changing sun gear 85A. For example, the fourth speed-changing sun gear 85A meshes with the seventh speed-changing planetary gear 83A.

[0182] For example, at least one fifth sun gear 90 meshes with at least one fifth planetary gear 88. For example, at least one fifth sun gear 90 includes a fifth speed-changing sun gear 90A. For example, at least one fifth sun gear 90 meshes with a ninth speed-changing planetary gear 88B.

[0183] For example, at least one third sun gear 80 and at least one fourth sun gear 85 are integrally formed. For example, the third speed change sun gear 80A and the fourth speed change sun gear 85A are integrally formed. At least one first sun gear 60 and at least one second sun gear 68 can be configured to be formed separately and rotate as a whole. The third speed change sun gear 80A and the fourth speed change sun gear 85A can be configured to be formed separately and rotate as a whole.

[0184] For example, at least one third sun gear 80 and at least one fourth sun gear 85 are configured to be formed separately from the shaft component 24 and rotate integrally with the shaft component 24. For example, the third speed change sun gear 80A and the fourth speed change sun gear 85A are formed on the outer periphery of the second cylinder component. For example, the second engaging portion 71B is formed on the inner periphery of the second cylinder component. For example, the second engaging portion 71B includes a spline or a serration. For example, the second engaging portion 71B engages with the second shaft component engaging portion 24B of the shaft component 24. For example, the second shaft component engaging portion 24B includes a spline or a serration. For example, the second shaft component engaging portion 24B is integrally formed with the shaft component 24. For example, at least one third sun gear 80 and at least one fourth sun gear 85 can be integrally formed with the shaft component 24.

[0185] For example, at least one fifth sun gear 90 is integrally formed with the shaft member 24. At least one fifth sun gear 90 can be configured to be formed separately from the shaft member 24 and rotate integrally with the shaft member 24 through splines or serrations like at least one third sun gear 80 and at least one fourth sun gear 85.

[0186] For example, at least one third sun gear 80 and at least one fifth sun gear 90 are configured to rotate integrally in at least a first direction B1 about the rotation center axis C2 of the shaft member 24. For example, at least one fourth sun gear 85 and at least one fifth sun gear 90 are configured to rotate integrally in at least a first direction B1 about the rotation center axis C2 of the shaft member 24. For example, at least one first sun gear 60, at least one second sun gear 68, at least one fourth sun gear 85, and at least one fifth sun gear 90 are configured to rotate integrally in at least a first direction B1 about the rotation center axis C2 of the shaft member 24.

[0187] For example, at least one first sun gear 60, at least one second sun gear 68, at least one third sun gear 80, at least one fourth sun gear 85, and at least one fifth sun gear 90 are configured to rotate integrally in at least a first direction B1 about the rotation center axis C2 of the shaft member 24. At least one first sun gear 60, at least one second sun gear 68, at least one third sun gear 80, at least one fourth sun gear 85, and at least one fifth sun gear 90 may be configured to rotate integrally in a second direction B2 opposite to the first direction B1 about the rotation center axis C2 of the shaft member 24.

[0188] For example, the pitch circle diameter of the first speed sun gear 60A is larger than the pitch circle diameter of the fifth speed sun gear 90A. For example, the pitch circle diameter of the first speed sun gear 60A is smaller than the respective pitch circle diameters of the second speed sun gear 68A, the third speed sun gear 80A, and the fourth speed sun gear 85A. For example, the pitch circle diameter of the second speed sun gear 68A is larger than the respective pitch circle diameters of the first speed sun gear 60A and the fifth speed sun gear 90A. For example, the pitch circle diameter of the second speed sun gear 68A is smaller than the respective pitch circle diameters of the third speed sun gear 80A and the fourth speed sun gear 85A.

[0189] For example, the pitch circle diameter of the third speed sun gear 80A is larger than the respective pitch circle diameters of the first speed sun gear 60A, the second speed sun gear 68A, the fourth speed sun gear 85A, and the fifth speed sun gear 90A. For example, the pitch circle diameter of the fourth speed sun gear 85A is larger than the respective pitch circle diameters of the first speed sun gear 60A, the second speed sun gear 68A, and the fifth speed sun gear 90A. For example, the pitch circle diameter of the fourth speed sun gear 85A is smaller than the pitch circle diameter of the third speed sun gear 80A. For example, the pitch circle diameter of the fifth speed sun gear 90A is smaller than the respective pitch circle diameters of the first speed sun gear 60A, the second speed sun gear 68A, the third speed sun gear 80A, and the fourth speed sun gear 85A.

[0190] For example, the plurality of speed ring gears 48D includes at least one third gear ring 81. For example, the at least one third gear ring 81 is meshed with at least one third planetary gear 78. For example, the at least one third gear ring 81 includes a fifth speed ring gear 81A. For example, the fifth speed ring gear 81A is meshed with the fifth speed planetary gear 78A.

[0191] For example, the plurality of speed gear rings 48D include at least one fourth gear ring 86. For example, the at least one fourth gear ring 86 meshes with the at least one fourth planetary gear 83. For example, the at least one fourth gear ring 86 includes a sixth speed gear ring 86A. For example, the sixth speed gear ring 86A meshes with the seventh speed planetary gear 83A.

[0192] For example, the plurality of speed gear rings 48D include at least one fifth gear ring 91. For example, the at least one fifth gear ring 91 is meshed with at least one fifth planetary gear 88. For example, the at least one fifth gear ring 91 includes a seventh speed gear ring 91A. For example, the seventh speed gear ring 91A is meshed with the eighth speed planetary gear 88A.

[0193] For example, the transmission 22 switches the gears in stages by controlling the rotation state of at least one of the at least one first sun gear 60, at least one second sun gear 68, at least one first ring gear 62, and at least one second ring gear 70. For example, the transmission 22 switches the gears in stages by controlling the rotation state of at least one of the at least one third sun gear 80 and at least one third ring gear 81. For example, the transmission 22 switches the gears in stages by controlling the rotation state of at least one of the at least one fourth sun gear 85, at least one fifth sun gear 90, at least one fourth ring gear 86, and at least one fifth ring gear 91.

[0194] For example, the transmission 22 switches the gears in stages by controlling the rotation state of at least one of the at least one first ring gear 62, the at least one second ring gear 70, the at least one third ring gear 81, the at least one fourth ring gear 86, and the at least one fifth ring gear 91. The transmission 22 can switch the gears in stages by controlling the rotation state of at least one of the at least one first sun gear 60, the at least one second sun gear 68, the at least one third sun gear 80, the at least one fourth sun gear 85, and the at least one fifth sun gear 90.

[0195] For example, the transmission 22 has a plurality of transmission paths. Each of the plurality of transmission paths corresponds to each of the plurality of gears. For example, the gear is switched by switching from one transmission path to another transmission path. The plurality of transmission paths constitute a part of the transmission path of the human driving force. The driving force input from the speed increasing output part 46 to the input rotating part 54 is output from the output rotating part 32 via any one of the plurality of transmission paths. The plurality of transmission paths include a first transmission path, a second transmission path, a third transmission path, a fourth transmission path, a fifth transmission path, a sixth transmission path, a seventh transmission path, an eighth transmission path, a ninth transmission path, a tenth transmission path, an eleventh transmission path, and a twelfth transmission path.

[0196] For example, the first transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the second gear frame 66, the fourth speed planetary gear 64B, the second speed sun gear 68A, the shaft component 24, the fifth speed sun gear 90A, the ninth speed planetary gear 88B, and the fifth gear frame part 93.

[0197] For example, the second transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the second gear frame 66, the third speed planetary gear 64A, the second speed sun gear 68A, the shaft component 24, the fifth speed sun gear 90A, the ninth speed planetary gear 88B, and the fifth gear frame part 93.

[0198] For example, the third transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the first gear frame 58, the second speed planetary gear 56B, the first speed sun gear 60A, the shaft component 24, the fifth speed sun gear 90A, the ninth speed planetary gear 88B, and the fifth gear frame part 93.

[0199] For example, the fourth transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the first gear frame 58, the first speed planetary gear 56A, the second speed planetary gear 56B, the first speed sun gear 60A, the shaft component 24, the fifth speed sun gear 90A, the ninth speed planetary gear 88B, and the fifth gear frame part 93.

[0200] For example, the fifth transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the second gear frame 66, the fourth speed planetary gear 64B, the second speed sun gear 68A, the shaft component 24, the fourth speed sun gear 85A, the seventh speed planetary gear 83A, the fourth gear frame 84, and the fifth gear frame part 93.

[0201] For example, the sixth transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the second gear frame 66, the third speed planetary gear 64A, the second speed sun gear 68A, the shaft component 24, the fourth speed sun gear 85A, the seventh speed planetary gear 83A, the fourth gear frame 84, and the fifth gear frame part 93.

[0202] For example, the seventh transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the first gear frame 58, the second speed planetary gear 56B, the first speed sun gear 60A, the shaft component 24, the fourth speed sun gear 85A, the seventh speed planetary gear 83A, the fourth gear frame 84, and the fifth gear frame part 93.

[0203] For example, the eighth transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the first gear frame 58, the first speed planetary gear 56A, the second speed planetary gear 56B, the first speed sun gear 60A, the shaft component 24, the fourth speed sun gear 85A, the seventh speed planetary gear 83A, the fourth gear frame 84, and the fifth gear frame part 93.

[0204] For example, the ninth transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the second gear frame 66, the fourth speed planetary gear 64B, the second speed sun gear 68A, the shaft component 24, the third speed sun gear 80A, the sixth speed planetary gear 78B, the fourth gear frame 84, and the fifth gear frame part 93.

[0205] For example, the tenth transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the second gear frame 66, the third speed planetary gear 64A, the second speed sun gear 68A, the shaft component 24, the third speed sun gear 80A, the sixth speed planetary gear 78B, the fourth gear frame 84, and the fifth gear frame part 93.

[0206] For example, the eleventh transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the first gear frame 58, the second speed planetary gear 56B, the first speed sun gear 60A, the shaft component 24, the third speed sun gear 80A, the sixth speed planetary gear 78B, the fourth gear frame 84, and the fifth gear frame part 93.

[0207] For example, the twelfth transmission path is a transmission path for allowing the driving force input to the input rotating part 54 to be output to the output rotating part 32 via the first gear frame 58, the first speed planetary gear 56A, the second speed planetary gear 56B, the first speed sun gear 60A, the shaft component 24, the third speed sun gear 80A, the sixth speed planetary gear 78B, the fourth gear frame 84, and the fifth gear frame part 93.

[0208] For example, the first transmission path to the twelfth transmission path are selected according to the rotation state of the plurality of speed gear rings 48D. For example, the rotation state of the plurality of speed gear rings 48D is switched between the permitted state and the restricted state. In the restricted state, the rotation of the plurality of speed gear rings 48D relative to the housing 30 is restricted. In the permitted state, the rotation of the plurality of speed gear rings 48D relative to the housing 30 is permitted. In the restricted state, in order to allow the transmission 22 to transmit the human driving force in the first direction B1 and the second direction B2 around the rotation center axis C2, if only the rotation in one direction in which the rotation of the plurality of speed gear rings 48D is to be prevented is restricted, the rotation in the other direction may not be restricted.

[0209] Table 1 shows the rotation states of the first speed gear ring 62A, the second speed gear ring 62B, the third speed gear ring 70A, the fourth speed gear ring 70B, the fifth speed gear ring 81A, the sixth speed gear ring 86A, and the seventh speed gear ring 91A in a plurality of speed gears. For example, the larger the number of the speed gear, the larger the gear ratio. In Table 1, when the rotation state of the first speed gear ring 62A, the second speed gear ring 62B, the third speed gear ring 70A, the fourth speed gear ring 70B, the fifth speed gear ring 81A, the sixth speed gear ring 86A, and the seventh speed gear ring 91A is in a restricted state, it is indicated by "○". In Table 1, "x" indicates when the rotation states of the first speed ring gear 62A, the second speed ring gear 62B, the third speed ring gear 70A, the fourth speed ring gear 70B, the fifth speed ring gear 81A, the sixth speed ring gear 86A, and the seventh speed ring gear 91A are in the permitted state.

[0210] (Table 1)

[0211] Speed ​​gear First gear ring Second speed ring gear Third speed ring gear Fourth speed ring gear Fifth speed ring gear Sixth speed ring gear Seventh speed ring gear 1 × × × ○ × × ○ 2 × × ○ × × × ○ 3 × ○ × × × × ○ 4 ○ × × × × × ○ 5 × × × ○ × ○ × 6 × × ○ × × ○ × 7 × ○ × × × ○ × 8 ○ × × × × ○ × 9 × × × ○ ○ × × 10 × × ○ × ○ × × 11 × ○ × × ○ × × 12 ○ × × × ○ × ×

[0212] For example, when the first speed ring gear 62A, the second speed ring gear 62B, the third speed ring gear 70A, the fifth speed ring gear 81A, and the sixth speed ring gear 86A are in the permitted state, and the fourth speed ring gear 70B and the seventh speed ring gear 91A are in the restricted state, the first transmission path is selected from the plurality of transmission paths.

[0213] For example, when the first speed ring gear 62A, the second speed ring gear 62B, the fourth speed ring gear 70B, the fifth speed ring gear 81A, and the sixth speed ring gear 86A are in the permitted state and the third speed ring gear 70A and the seventh speed ring gear 91A are in the restricted state, the second transmission path is selected from the plurality of transmission paths.

[0214] For example, when the first speed ring gear 62A, the third speed ring gear 70A, the fourth speed ring gear 70B, the fifth speed ring gear 81A, and the sixth speed ring gear 86A are in the permitted state and the second speed ring gear 62B and the seventh speed ring gear 91A are in the restricted state, the third transmission path is selected from the plurality of transmission paths.

[0215] For example, when the second speed ring gear 62B, the third speed ring gear 70A, the fourth speed ring gear 70B, the fifth speed ring gear 81A, and the sixth speed ring gear 86A are in the permitted state and the first speed ring gear 62A and the seventh speed ring gear 91A are in the restricted state, the fourth transmission path is selected from the plurality of transmission paths.

[0216] For example, when the first speed ring gear 62A, the second speed ring gear 62B, the third speed ring gear 70A, the fifth speed ring gear 81A, and the seventh speed ring gear 91A are in the permitted state and the fourth speed ring gear 70B and the sixth speed ring gear 86A are in the restricted state, the fifth transmission path is selected from the plurality of transmission paths.

[0217] For example, when the first speed ring gear 62A, the second speed ring gear 62B, the fourth speed ring gear 70B, the fifth speed ring gear 81A, and the seventh speed ring gear 91A are in the permitted state and the third speed ring gear 70A and the sixth speed ring gear 86A are in the restricted state, the sixth transmission path is selected from the plurality of transmission paths.

[0218] For example, when the first speed ring gear 62A, the third speed ring gear 70A, the fourth speed ring gear 70B, the fifth speed ring gear 81A, and the seventh speed ring gear 91A are in the permitted state and the second speed ring gear 62B and the sixth speed ring gear 86A are in the restricted state, the seventh transmission path is selected from the plurality of transmission paths.

[0219] For example, when the second speed ring gear 62B, the third speed ring gear 70A, the fourth speed ring gear 70B, the fifth speed ring gear 81A, and the seventh speed ring gear 91A are in the permitted state and the first speed ring gear 62A and the sixth speed ring gear 86A are in the restricted state, the eighth transmission path is selected from the plurality of transmission paths.

[0220] For example, when the first speed ring gear 62A, the second speed ring gear 62B, the third speed ring gear 70A, the sixth speed ring gear 86A, and the seventh speed ring gear 91A are in the permitted state and the fourth speed ring gear 70B and the fifth speed ring gear 81A are in the restricted state, the ninth transmission path is selected from the plurality of transmission paths.

[0221] For example, when the first speed ring gear 62A, the second speed ring gear 62B, the fourth speed ring gear 70B, the sixth speed ring gear 86A, and the seventh speed ring gear 91A are in the permitted state and the third speed ring gear 70A and the fifth speed ring gear 81A are in the restricted state, the tenth transmission path is selected from the plurality of transmission paths.

[0222] For example, when the first speed ring gear 62A, the third speed ring gear 70A, the fourth speed ring gear 70B, the sixth speed ring gear 86A, and the seventh speed ring gear 91A are in the permitted state and the second speed ring gear 62B and the fifth speed ring gear 81A are in the restricted state, the eleventh transmission path is selected from the plurality of transmission paths.

[0223] For example, when the second speed ring gear 62B, the third speed ring gear 70A, the fourth speed ring gear 70B, the sixth speed ring gear 86A, and the seventh speed ring gear 91A are in the permitted state and the first speed ring gear 62A and the fifth speed ring gear 81A are in the restricted state, the twelfth transmission path is selected from the plurality of transmission paths.

[0224] For example, the transmission 22 further includes a speed switching mechanism 94. For example, the transmission 22 is configured to switch the speed of the transmission 22 in stages by changing the rotation states of the plurality of speed ring gears 48D.

[0225] For example, the speed changeover mechanism 94 switches the speed gears in stages by switching the rotation states of the plurality of first ring gears 62. For example, the speed changeover mechanism 94 switches the speed gears in stages by switching the rotation states of the plurality of second ring gears 70. For example, the speed changeover mechanism 94 switches the speed gears in stages by switching the rotation states of at least one first ring gear 62 and at least one second ring gear 70.

[0226] For example, the speed switching mechanism 94 switches the speed gear in stages by switching the rotation state of at least one third gear ring 81. For example, the speed switching mechanism 94 switches the speed gear in stages by switching the rotation state of at least one fourth gear ring 86. For example, the speed switching mechanism 94 switches the speed gear in stages by switching the rotation state of at least one fifth gear ring 91. For example, the speed switching mechanism 94 switches the speed gear in stages by switching the rotation states of at least one first gear ring 62, at least one second gear ring 70, at least one third gear ring 81, at least one fourth gear ring 86, and at least one fifth gear ring 91.

[0227] For example, the speed change switching mechanism 94 includes a plurality of clutches 95. For example, the plurality of clutches 95 switches the rotation state of the plurality of speed gear rings 48D between the permitted state and the restricted state. For example, each of the plurality of clutches 95 has a rotating member 96 and an engaging member 97, and the engaging member 97 engages with at least one recess 78E provided on the outer periphery of the plurality of speed gear rings 48D. For example, each of the plurality of clutches 95 is configured to switch between a first state in which the engaging member 97 is disengaged from at least one recess 78E and a second state in which the engaging member 97 is engaged with at least one recess 78E by the rotation of the rotating member 96. For example, the engaging member 97 includes a claw member. The at least one recess 78E preferably includes a plurality of recesses 78E. For example, the plurality of recesses 78E are arranged at intervals on the outer periphery of the plurality of speed gear rings 48D around the rotation center axis C2 of the shaft member 24.

[0228] For example, the clutch 95 includes a first clutch 95A corresponding to the first speed gear ring 62A. For example, the first clutch 95A includes a first rotating member 96A and a first engaging member 97A. For example, the first engaging member 97A is configured to engage with at least one recess 78E of the first speed gear ring 62A. For example, the first clutch 95A is configured to switch between a first state in which the first engaging member 97A is disengaged from at least one recess 78E and a second state in which the first engaging member 97A is engaged with at least one recess 78E by the rotation of the first rotating member 96A.

[0229] For example, the clutch 95 includes a second clutch 95B corresponding to the second speed-change ring gear 62B. For example, the second clutch 95B includes a second rotating member 96B and a second engaging member 97B. For example, the second engaging member 97B is configured to engage with at least one recess 78E of the second speed-change ring gear 62B. For example, the second clutch 95B is configured to switch between a first state in which the second engaging member 97B is disengaged from at least one recess 78E and a second state in which the second engaging member 97B is engaged with at least one recess 78E by the rotation of the second rotating member 96B.

[0230] For example, the clutch 95 includes a third clutch 95C corresponding to the third speed-change ring gear 70A. For example, the third clutch 95C includes a third rotating member 96C and a third engaging member 97C. For example, the third engaging member 97C is configured to engage with at least one recess 78E of the third speed-change ring gear 70A. For example, the third clutch 95C is configured to switch between a first state in which the third engaging member 97C is disengaged from at least one recess 78E and a second state in which the third engaging member 97C is engaged with at least one recess 78E by rotating the third rotating member 96C.

[0231] For example, the clutch 95 includes a fourth clutch 95D corresponding to the fourth speed-change ring gear 70B. For example, the fourth clutch 95D includes a fourth rotating member 96D and a fourth engaging member 97D. For example, the fourth engaging member 97D is configured to engage with at least one recess 78E of the fourth speed-change ring gear 70B. For example, the fourth clutch 95D is configured to switch between a first state in which the fourth engaging member 97D is disengaged from at least one recess 78E and a second state in which the fourth engaging member 97D is engaged with at least one recess 78E by the rotation of the fourth rotating member 96D.

[0232] For example, the clutch 95 includes a fifth clutch 95E corresponding to the fifth speed-change ring gear 81A. For example, the fifth clutch 95E includes a fifth rotating member 96E and a fifth engaging member 97E. For example, the fifth engaging member 97E is configured to engage with at least one recess 78E of the fifth speed-change ring gear 81A. For example, the fifth clutch 95E is configured to switch between a first state in which the fifth engaging member 97E is disengaged from at least one recess 78E and a second state in which the fifth engaging member 97E is engaged with at least one recess 78E by the rotation of the fifth rotating member 96E.

[0233] For example, the clutch 95 includes a sixth clutch 95F corresponding to the sixth speed-change ring gear 86A. For example, the sixth clutch 95F includes a sixth rotating member 96F and a sixth engaging member 97F. For example, the sixth engaging member 97F is configured to engage with at least one recess 78E of the sixth speed-change ring gear 86A. For example, the sixth clutch 95F is configured to switch between a first state in which the sixth engaging member 97F is disengaged from at least one recess 78E and a second state in which the sixth engaging member 97F is engaged with at least one recess 78E by rotating the sixth rotating member 96F.

[0234] For example, the clutch 95 includes a seventh clutch 95G corresponding to the seventh speed-change ring gear 91A. For example, the seventh clutch 95G includes a seventh rotating member 96G and a seventh engaging member 97G. For example, the seventh engaging member 97G is configured to engage with at least one recess 78E of the seventh speed-change ring gear 91A. For example, the seventh clutch 95G is configured to switch between a first state in which the seventh engaging member 97G is disengaged from at least one recess 78E and a second state in which the seventh engaging member 97G is engaged with at least one recess 78E by the rotation of the seventh rotating member 96G.

[0235] For example, the speed change switching mechanism 94 includes an electric actuator. For example, the electric actuator includes a speed change motor 94A. For example, the electric actuator is configured to switch the state of the clutch 95 between the first state and the second state. For example, the rotating member 96 is configured to rotate by the electric actuator.

[0236] For example, the transmission 22 includes a first control unit 22A. For example, the first control unit 22A is configured to control the speed-changing motor 94A. For example, the first control unit 22A includes an arithmetic processing device that executes a predetermined control program. For example, the arithmetic processing device includes a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). The arithmetic processing device can be set in a plurality of places separated from each other. The first control unit 22A can include one or more microcomputers.

[0237] For example, the transmission 22 includes a first storage unit. The first storage unit stores various control programs and information for various control processes. For example, the first storage unit includes a non-volatile memory and a volatile memory. For example, the non-volatile memory includes at least one of a ROM (Read-Only Memory), an EPROM (Erasable Programmable ReadOnly Memory), an EEPROM (Electrically Erasable Programmable Read-Only Memory), and a flash memory. For example, the volatile memory includes a RAM (Random Access Memory).

[0238] For example, the first control unit 22A is configured to receive a speed change signal from the speed change operating device and control the speed change motor 94A. The first control unit 22A and the speed change operating device may be connected via a wireless communication device or via a cable. The first control unit 22A may receive a signal from a sensor mounted on the human-powered vehicle instead of receiving a speed change signal from the speed change operating device, and control the speed change motor 94A to automatically change speed.

[0239] For example, when the first transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the first clutch 95A, the second clutch 95B, the third clutch 95C, the fifth clutch 95E, and the sixth clutch 95F are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the fourth clutch 95D and the seventh clutch 95G are in the second state.

[0240] For example, when the second transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the first clutch 95A, the second clutch 95B, the fourth clutch 95D, the fifth clutch 95E, and the sixth clutch 95F are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the third clutch 95C and the seventh clutch 95G are in the second state.

[0241] For example, when the third transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed motor 94A so that the first clutch 95A, the third clutch 95C, the fourth clutch 95D, the fifth clutch 95E, and the sixth clutch 95F are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed motor 94A so that the second clutch 95B and the seventh clutch 95G are in the second state.

[0242] For example, when the fourth transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed motor 94A so that the second clutch 95B, the third clutch 95C, the fourth clutch 95D, the fifth clutch 95E, and the sixth clutch 95F are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed motor 94A so that the first clutch 95A and the seventh clutch 95G are in the second state.

[0243] For example, when the fifth transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the first clutch 95A, the second clutch 95B, the third clutch 95C, the fifth clutch 95E, and the seventh clutch 95G are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed change control unit controls the speed change motor 94A so that the fourth clutch 95D and the sixth clutch 95F are in the second state.

[0244] For example, when the sixth transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the first clutch 95A, the second clutch 95B, the fourth clutch 95D, the fifth clutch 95E, and the seventh clutch 95G are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed change control unit controls the speed change motor 94A so that the third clutch 95C and the sixth clutch 95F are in the second state.

[0245] For example, when the seventh transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the first clutch 95A, the third clutch 95C, the fourth clutch 95D, the fifth clutch 95E, and the seventh clutch 95G are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed change control unit controls the speed change motor 94A so that the second clutch 95B and the sixth clutch 95F are in the second state.

[0246] For example, when the eighth transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the second clutch 95B, the third clutch 95C, the fourth clutch 95D, the fifth clutch 95E, and the seventh clutch 95G are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the first clutch 95A and the sixth clutch 95F are in the second state.

[0247] For example, when the ninth transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the first clutch 95A, the second clutch 95B, the third clutch 95C, the sixth clutch 95F, and the seventh clutch 95G are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed change control unit controls the speed change motor 94A so that the fourth clutch 95D and the fifth clutch 95E are in the second state.

[0248] For example, when the tenth transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the first clutch 95A, the second clutch 95B, the fourth clutch 95D, the sixth clutch 95F, and the seventh clutch 95G are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the third clutch 95C and the fifth clutch 95E are in the second state.

[0249] For example, when the eleventh transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the first clutch 95A, the third clutch 95C, the fourth clutch 95D, the sixth clutch 95F, and the seventh clutch 95G are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the second clutch 95B and the fifth clutch 95E are in the second state.

[0250] For example, when the twelfth transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the second clutch 95B, the third clutch 95C, the fourth clutch 95D, the sixth clutch 95F, and the seventh clutch 95G are in the first state. For example, when the first transmission path is selected from the plurality of transmission paths, the speed control unit controls the speed change motor 94A so that the first clutch 95A and the fifth clutch 95E are in the second state.

[0251] <Second embodiment>

[0252] Reference Figures 19 to 21, the assembly 20 and the transmission 22 of the second embodiment will be described. In the assembly 20 and the transmission 22 of the second embodiment, the same reference numerals as those of the first embodiment are attached to the common structures of the assembly 20 and the transmission 22 of the first embodiment, and the repeated description is omitted.

[0253] For example, the assembly 20 for the human-powered vehicle of the second embodiment includes a transmission 22 and a motor 98, and the motor 98 is configured to impart propulsion to the human-powered vehicle. For example, the assembly 20 includes a transmission 22, a shaft member 24, and a speed increaser 26, and further includes a motor 98, and the motor 98 is configured to impart propulsion to the human-powered vehicle. The motor 98 is, for example, an auxiliary motor. For example, the motor 98 includes a motor rotating shaft 98A.

[0254] For example, the assembly 20 further includes a force combining portion 99. For example, the motor driving force of the motor 98 is combined with the human driving force at the force combining portion 99. For example, the force combining portion 99 includes at least one of the speed increasing input portion 44 and the input rotation portion 54. For example, the speed increasing input portion 44 is configured to input the rotation torque of the motor 98. For example, the motor driving force of the motor 98 is combined with the human driving force at the speed increasing input portion 44.

[0255] For example, the assembly 20 further includes a motor reducer 98B. For example, the motor driving force is input from the motor 98 to the motor reducer 98B. For example, the motor reducer 98B outputs the motor driving force input from the motor 98 to the combined force portion 99. For example, the motor reducer 98B connects the motor rotating shaft 98A to the combined force portion 99. By inputting the rotational torque of the motor 98 to the speed increasing input portion 44, the reduction ratio of the motor reducer 98B can be reduced and the motor reducer 98B can be miniaturized.

[0256] For example, the motor reducer 98B includes at least one of a gear, a pulley, and an endless annular member. For example, the endless annular member includes at least one of a chain and a belt. For example, the motor reducer 98B includes a gear. The motor reducer 98B may include a planetary gear mechanism. The motor reducer 98B may include a pulley and a belt. The motor reducer 98B may include a gear and a chain.

[0257] For example, the assembly 20 is a transmission unit, wherein the transmission 22 , the shaft member 24 , the speed increaser 26 , at least a portion of the input rotating shaft 28 , at least a portion of the motor 98 , and at least a portion of the motor speed reducer 98B are disposed in the internal space 20A of the housing 30 .

[0258] For example, the assembly 20 further includes a third one-way clutch. For example, the third one-way clutch is provided between the motor 98 and the combined force portion 99 on the transmission path of the motor driving force. For example, the third one-way clutch transmits the rotational force of the motor 98 to the combined force portion 99, and restricts the rotational force of the combined force portion 99 generated by the human driving force from being transmitted to the motor 98. For example, the third one-way clutch includes at least one of a roller clutch, a dog clutch, and a sprag clutch.

[0259] For example, the transmission unit includes a second control unit configured to control the motor 98. For example, the second control unit is housed in the housing 30. For example, the second control unit includes an arithmetic processing device that executes a preset control program. The arithmetic processing device includes, for example, a CPU or an MPU. The arithmetic processing device can be set in a plurality of places separated from each other. The second control unit may include one or more microcomputers. For example, the second control unit also includes an inverter circuit. The inverter circuit is electrically connected to the arithmetic processing device and the motor 98. The second control unit may include an arithmetic processing device common to the first control unit 22A.

[0260] The transmission unit may further include a torque sensor that outputs a signal corresponding to the human driving force input to the crankshaft 10. For example, the control unit is configured to control the motor 98 based on the detection result of the torque sensor. For example, the torque sensor includes a known sensor such as a strain gauge or a magnetostrictive sensor. For example, the torque sensor may be provided on the speed increaser 26, on the crankshaft 10, or on the crank arm 12.

[0261] For example, the transmission unit includes a second storage unit. The second storage unit stores various control programs and information for various control processes. The storage unit includes, for example, a non-volatile memory and a volatile memory. For example, the non-volatile memory includes at least one of a ROM, an EPROM, an EEPROM, and a flash memory. For example, the volatile memory includes a RAM. The second storage unit may include a memory common to the first storage unit.

[0262] <Modification>

[0263] The descriptions related to each embodiment are examples of the methods that can be adopted by the components for human-powered vehicles and the transmission for human-powered vehicles according to the present disclosure, and are not intended to limit the methods. For example, the components for human-powered vehicles and the transmission for human-powered vehicles according to the present disclosure can adopt the modified examples of each embodiment shown below, and the method formed by combining at least two modified examples that do not contradict each other. In the following modified examples, for the parts common to the embodiments, the same symbols as the embodiments are added and their descriptions are omitted.

[0264] At least one of the minimum speed ratio and the maximum speed ratio of the transmission 22 can be appropriately changed. The minimum speed ratio of the transmission 22 can be greater than 1. The maximum speed ratio of the transmission 22 can be less than 1. The speed ratio of the transmission 22 can be configured to include 1. The minimum speed ratio of the transmission 22 can be 1 and the maximum speed ratio of the transmission 22 can be 2.6.

[0265] The number of shift speeds of the transmission 22 can be changed as appropriate. For example, in each embodiment, the first speed change unit may be omitted, and the second speed change unit may be omitted.

[0266] ·Component 20 can be provided on the axle of the wheel of the human-powered vehicle. In this modification, for example, component 20 is provided on the wheel axle of the driving wheel. For example, the driving wheel includes a rear wheel. For example, the shaft component 24 includes a hub shaft. For example, the input rotating shaft 28 is not provided on the shell 30. For example, the output rotating body 34 includes a hub shell. For example, the output rotating part 32 is formed integrally with the output rotating body 34. For example, the hub shell is formed integrally with the shell 30. The hub shell can be configured to be formed separately from the shell 30 and rotate integrally. For example, component 20 is provided on the rear hub of the rear wheel.

[0267] The rotation torque of the motor 98 may be input to the input rotating portion 54. When the rotation torque of the motor 98 is input to the input rotating portion 54, the reduction ratio of the motor reducer 98B can be further reduced, and thus the motor reducer 98B can be further miniaturized.

[0268] The motor speed reducer 98B may be omitted. When the motor speed reducer 98B is omitted, for example, the rotation torque of the motor 98 is input to the input rotating portion 54 .

[0269] The expression "at least one" used in this specification refers to "more than one" of the desired options. As an example, if the number of options is two, the expression "at least one" used in this specification refers to "only one option" or "both of the two options". As another example, if the number of options is three or more, the expression "at least one" used in this specification refers to "only one option" or "a combination of any two or more options".

[0270] Ordinal numbers such as “first, second, and third” used in this specification are merely used to distinguish between multiple components with the same name and have no special meaning.

[0271] Explanation of symbols:

[0272] 20…assembly, 22…transmission, 24…shaft member, 28…input rotating shaft, 30…housing, 32…output rotating portion, 50…first planetary gear unit, 52…second planetary gear unit, 54…input rotating portion, 56…first planetary gear, 58…first gear carrier, 58A…first gear carrier pin, 60…first sun gear, 62…first ring gear, 64…second planetary gear, 66…second gear carrier, 66A…second gear carrier pin, 68…second sun gear, 70…second ring gear, 72…first gear carrier portion, 74…second gear carrier portion, 76…third gear Carrier portion, 77…third planetary gear unit, 78…third planetary gear, 79…third gear carrier, 79A…third gear carrier pin, 80…third sun gear, 81…third ring gear, 82…fourth planetary gear unit, 83…fourth planetary gear, 84…fourth gear carrier, 84A…fourth gear carrier pin, 85…fourth sun gear, 86…fourth ring gear, 87…fifth planetary gear unit, 88…fifth planetary gear, 89…fifth gear carrier, 89A…fifth gear carrier pin, 90…fifth sun gear, 91…fifth ring gear, 94…speed switching mechanism, 98…motor.

Claims

1. A transmission for a human-powered vehicle configured to switch the gear speed of the human-powered vehicle in stages, comprising: Axis components; A first planetary gear unit, which is provided on the shaft member; as well as a second planetary gear unit provided on the shaft member, The first planetary gear unit comprises: at least one first planetary gear; a first gear carrier having at least one first gear carrier pin and supporting the at least one first planetary gear via the at least one first gear carrier pin; at least one first sun gear meshing with the at least one first planet gear; and at least one first ring gear meshing with the at least one first planetary gear, The second planetary gear unit comprises: at least one second planetary gear; a second gear carrier having at least one second gear carrier pin and supporting the at least one second planetary gear via the at least one second gear carrier pin; at least one second sun gear coupled to the at least one second planet gear; and at least one second ring gear meshing with the at least one second planetary gear, The at least one first gear carrier pin and the at least one second gear carrier pin are formed as different components and are arranged at a distance from the at least one second gear carrier pin. The at least one first gear carrier pin and the at least one second gear carrier pin are arranged to overlap each other on a first plane orthogonal to the shaft member, The shift speed is switched in stages by controlling the rotation state of at least one of the at least one first sun gear, the at least one second sun gear, the at least one first ring gear, and the at least one second ring gear.

2. The transmission according to claim 1, wherein: The at least one first planetary gear includes a plurality of first planetary gears having different diameters from each other, At least a gear having the largest diameter among the plurality of first planetary gears is arranged so as to overlap with the at least one second planetary gear when viewed in the axial direction of the shaft member.

3. The transmission according to claim 1, wherein: The at least one second planetary gear includes a plurality of second planetary gears having different diameters from each other, At least a gear having the largest diameter among the plurality of second planetary gears is arranged so as to overlap with the at least one first planetary gear when viewed in the axial direction of the shaft member.

4. The transmission according to claim 1, wherein: The transmission further includes a third planetary gear unit provided on the shaft member. The third planetary gear unit comprises: at least one third planetary gear; a third gear carrier having at least one third gear carrier pin and supporting the at least one third planetary gear via the at least one third gear carrier pin; at least one third sun gear meshing with the at least one third planet gear; and at least one third ring gear meshing with the at least one third planetary gear, The at least one third gear frame pin is integrally formed with the at least one first gear frame pin or the at least one second gear frame pin, The shift speed is switched in stages by controlling the rotation state of at least one of the at least one third sun gear and the at least one third ring gear.

5. The transmission according to claim 1, wherein: A portion of the first gear carrier is formed integrally with a portion of the second gear carrier.

6. The transmission according to claim 5, wherein: The first gear frame has a first gear frame portion and a second gear frame portion, The at least one first carrier pin is supported by the first carrier portion and the second carrier portion, The at least one first planetary gear is disposed between the first carrier portion and the second carrier portion in the axial direction of the shaft member.

7. The transmission according to claim 6, wherein: The second gear carrier has the first gear carrier portion and the second gear carrier portion, The at least one second carrier pin is supported by the first carrier portion and the second carrier portion, The at least one second planetary gear is disposed between the first carrier portion and the second carrier portion in the axial direction of the shaft member.

8. The transmission according to claim 4, wherein: The first gear frame has a first gear frame portion and a second gear frame portion, The at least one first carrier pin is supported by the first carrier portion and the second carrier portion, The at least one first planetary gear is disposed between the first gear carrier portion and the second gear carrier portion in the axial direction of the shaft member. The second gear carrier includes at least one of the first gear carrier portion and the second gear carrier portion and a third gear carrier portion. The at least one second gear carrier pin is supported by at least one of the first gear carrier portion and the second gear carrier portion and the third gear carrier portion, The at least one second planetary gear is disposed between the second gear carrier portion and the third gear carrier portion. The second gear carrier portion is disposed between the first gear carrier portion and the third gear carrier portion in the axial direction of the shaft member.

9. The transmission according to claim 1, wherein: The transmission also includes a speed change switching mechanism. The speed changeover mechanism switches the speed gears in stages by switching the rotation state of the at least one first ring gear and the rotation state of the at least one second ring gear.

10. The transmission according to claim 9, wherein: The at least one first planetary gear comprises a plurality of first planetary gears, The at least one first gear ring includes a plurality of first gear rings that can rotate independently of each other, The plurality of first planetary gears are respectively meshed with the plurality of first ring gears, The speed changeover mechanism switches the speed gears in stages by switching the rotation states of the plurality of first ring gears.

11. The transmission according to claim 9, wherein: The at least one second planetary gear comprises a plurality of second planetary gears, The at least one second ring gear includes a plurality of second ring gears that can rotate independently of each other, The plurality of second planetary gears are respectively meshed with the plurality of second ring gears, The speed changeover mechanism switches the speed gears in stages by switching the rotation states of the plurality of second ring gears.

12. The transmission according to claim 9, wherein: The at least one first sun gear and the at least one second sun gear are configured to rotate integrally in at least a first direction around a rotation center axis of the shaft member.

13. The transmission of claim 1, wherein: The at least one first planetary gear includes a plurality of first planetary gears, the plurality of first planetary gears being arranged at intervals around the rotation center axis of the shaft member. The at least one second planetary gear includes a plurality of second planetary gears, the plurality of second planetary gears being arranged at intervals around the rotation center axis of the shaft member. The at least one first gear carrier pin includes a plurality of first gear carrier pins corresponding to the plurality of first planetary gears, The at least one second gear carrier pin includes a plurality of second gear carrier pins corresponding to the plurality of second planetary gears, The plurality of first carrier pins and the plurality of second carrier pins are alternately arranged at equal intervals around a rotation center axis of the shaft member.

14. The transmission of claim 1, wherein: The transmission comprises: a fourth planetary gear unit provided on the shaft member; and a fifth planetary gear unit provided on the shaft member, The fourth planetary gear unit comprises: at least one fourth planetary gear; a fourth gear carrier having at least one fourth gear carrier pin and supporting the at least one fourth planetary gear via the at least one fourth gear carrier pin; at least one fourth sun gear meshing with the at least one fourth planet gear; and at least one fourth ring gear meshing with the at least one fourth planetary gear, The fifth planetary gear unit comprises: at least one fifth planetary gear; a fifth gear carrier having at least one fifth gear carrier pin and supporting the at least one fifth planetary gear via the at least one fifth gear carrier pin; at least one fifth sun gear meshing with the at least one fifth planet gear; and at least one fifth ring gear meshing with the at least one fifth planetary gear, The at least one fourth gear carrier pin is formed as a different component from the at least one fifth gear carrier pin, and is arranged at a distance from the at least one fifth gear carrier pin. The at least one fourth gear carrier pin and the at least one fifth gear carrier pin are arranged to overlap each other on a second plane orthogonal to the shaft member, The shift speed is switched in stages by controlling the rotation state of at least one of the at least one fourth sun gear, the at least one fifth sun gear, the at least one fourth ring gear, and the at least one fifth ring gear.

15. The transmission according to claim 14, wherein: A portion of the fourth gear carrier is formed integrally with a portion of the fifth gear carrier.

16. The transmission of claim 14, wherein: The at least one fourth sun gear and the at least one fifth sun gear are configured to rotate integrally in at least a first direction around a rotation center axis of the shaft member.

17. The transmission of claim 14, wherein: The transmission further comprises an input rotating part and an output rotating part. The input rotating part is connected to the first gear frame, The output rotating portion is connected to the fifth gear carrier.

18. The transmission of claim 14, wherein: The at least one first sun gear, the at least one second sun gear, the at least one fourth sun gear, and the at least one fifth sun gear are configured to rotate integrally in at least a first direction around a rotation center axis of the shaft member.

19. The transmission of claim 1, wherein: The transmission further comprises a housing which can be mounted on a frame of the human-powered vehicle. The transmission is mounted on the housing and connected to the rear wheel of the human-powered vehicle via at least one of a chain, a belt, and a transmission shaft when the housing is mounted on the vehicle frame.

20. The transmission of claim 1, wherein: The transmission further comprises an input rotating shaft, The input rotating shaft is arranged in parallel with the shaft member, and is arranged at a distance from the shaft member in a radial direction of the input rotating shaft.

21. A component for a human-powered vehicle, comprising: The transmission of claim 1; and A motor is configured to provide a propulsion force to the human-powered vehicle.

Images