Components for human-powered vehicles

Abstract

We provide components for human-powered vehicles that contribute to design flexibility. [Solution] The component for a human-powered vehicle comprises an input shaft to which human-powered driving force is input and which has an input central axis; a rotation ratio changing unit to which the rotational force of the input shaft is transmitted; and a gear shifting unit having a gear shifting input unit, a gear shifting output unit, and a gear shifting central axis different from the input central axis, and configured to change the gear ratio, which is the ratio of the rotational speed of the gear shifting output unit to the rotational speed of the gear shifting input unit. The rotation ratio changing unit includes an input rotating body connected to the input shaft and rotating around the input central axis; an output rotating body connected to the gear shifting unit and rotating around the gear shifting central axis; and a transmission rotating body that transmits the rotational force of the input rotating body to the output rotating body. The component is configured to change the ratio of the rotational speed of the output rotating body to the rotational speed of the input rotating body, and the transmission rotating body rotates around a transmission central axis different from both the input central axis and the gear shifting central axis.

Description

Technical Field

[0001] The present disclosure relates to a component for a human-powered vehicle.

Background Art

[0002] For example, Patent Document 1 discloses a component for a human-powered vehicle. The component of Patent Document 1 includes a crankshaft to which human driving force is input, and a transmission. The crankshaft and the transmission are connected by a crank gear provided on an outer peripheral portion of the crankshaft and an input gear having the same central axis as the central axis of the transmission.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] The number of teeth of the crank gear and the number of teeth of the input gear are set according to the gear ratio of the transmission, so the distance from the crankshaft to the transmission is limited by the number of teeth of the crank gear and the number of teeth of the input gear. In Patent Document 1, the crankshaft and the transmission are connected by gears, but the distance from the crankshaft to the transmission is similarly limited for a transmission mechanism using a rotating body other than a gear, such as a pulley.

[0005] One object of the present disclosure is to provide a component for a human-powered vehicle that can contribute to the degree of freedom in designing a component for a human-powered vehicle.

Means for Solving the Problem

[0006] A component relating to the first aspect of this disclosure is a component for a human-powered vehicle, comprising: an input shaft to which human-powered driving force is input and which has an input central axis; a rotation ratio changing unit to which the rotational force of the input shaft is transmitted; a gear shift input unit to which rotational force is input from the rotation ratio changing unit; a gear shift output unit to which the rotational force input to the gear shift input unit is output to the outside; and a gear shift central axis different from the input central axis, and configured to change the gear ratio, which is the ratio of the rotational speed of the gear shift output unit to the rotational speed of the gear shift input unit. The rotation ratio changing unit comprises a speed change unit, the input rotating body connected to the input shaft and rotating around the input central axis, the output rotating body connected to the speed change unit and rotating around the speed change central axis, and a transmission rotating body that transmits the rotational force of the input rotating body to the output rotating body, and is configured to change the ratio of the rotational speed of the output rotating body to the rotational speed of the input rotating body, and the transmission rotating body rotates around a transmission central axis that is different from both the input central axis and the speed change central axis. According to the component on the first side, since it has a transmission axis that is different from the input axis and the gear shift axis, the distance between the input axis and the gear shift axis can be changed by adjusting the position of the transmission axis. Therefore, the component can contribute to the design flexibility of the component.

[0007] In a component of the second aspect according to the first aspect of this disclosure, the final change ratio, which is the ratio of the rotational speed of the output rotating body to the rotational speed of the input rotating body, is greater than 1.0. According to the components on the second side, the components that make up the speed increaser can contribute to the degree of freedom in component design.

[0008] In the components of the third aspect according to the second aspect of this disclosure, the final change ratio is greater than 6.0. According to the third aspect of the component, components with a final change ratio of 6.0 or higher can contribute to the design flexibility of the component.

[0009] In a component of a fourth aspect according to any one of the first to third aspects of this disclosure, the first change ratio, which is the ratio of the rotational speed of the transmission rotor to the rotational speed of the input rotor, is greater than 1.0. According to the fourth aspect of the component, components with a first change ratio greater than 1.0 can contribute to the design flexibility of the component.

[0010] In a component of a fifth aspect according to any one of the first to fourth aspects of this disclosure, the second change ratio, which is the ratio of the rotational speed of the output rotor to the rotational speed of the transmission rotor, is greater than 1.0. According to the fifth aspect of the component, components with a second change ratio greater than 1.0 can contribute to the design flexibility of the component.

[0011] In the component of the sixth aspect according to the fourth aspect of this disclosure, the second change ratio, which is the ratio of the rotational speed of the output rotor to the rotational speed of the transmission rotor, is greater than 1.0, and the first change ratio is greater than the second change ratio. According to the component on the sixth side, since the first change ratio is greater than the second change ratio, the rotational force of the transmission rotating body can be reduced.

[0012] In a component of a seventh aspect according to any one of the first to sixth aspects of this disclosure, the input rotating body includes an input gear, the output rotating body includes an output gear, and the transmission rotating body includes a first transmission gear meshing with the input gear and a second transmission gear meshing with the output gear. According to the components on the seventh side, the rotation ratio changing section can be configured with an input gear, a first transmission gear, a second transmission gear, and an output gear.

[0013] In the component of the eighth aspect according to the seventh aspect of this disclosure, the first transmission gear is formed integrally with the second transmission gear. According to the component on the eighth side, the first transmission gear is formed integrally with the second transmission gear, thus reducing the number of parts.

[0014] In a component of the ninth aspect according to the seventh or eighth aspect of this disclosure, the number of teeth of the first transmission gear is different from the number of teeth of the second transmission gear. According to the component on the ninth side, the number of teeth of the first transmission gear is different from the number of teeth of the second transmission gear, so that the ratio of the rotational speed of the output rotating body to the rotational speed of the input rotating body can be suitably changed.

[0015] In a component of the tenth aspect according to any one of the first to ninth aspects of this disclosure, the input rotating body is positioned such that it does not overlap the output rotating body when viewed from the input axis direction with respect to the input central axis. According to the component on the tenth side, the input and output bodies of revolution do not overlap when viewed from the input axis direction, so the input and output bodies of revolution can be positioned at a distance from each other.

[0016] In a component of the eleventh aspect according to any one of the first to tenth aspects of this disclosure, if the input rotating body rotates clockwise or counterclockwise when viewed from the input axis direction with respect to the input central axis, the output rotating body is configured to rotate in the one direction when viewed from the input axis direction. According to the component on the 11th side, the rotation direction of the output rotating body can be made to be the same as the rotation direction of the input rotating body.

[0017] In a component of the twelfth aspect according to any one of the first to eleventh aspects of this disclosure, the gear shifter has at least one planetary gear mechanism. According to the component on the twelfth side, the speed can be suitably shifted by a gearbox having at least one planetary gear mechanism.

[0018] In a component of a thirteenth aspect according to any one of the first to twelfth aspects of the present disclosure, the gear shift unit further includes a first gear shift unit having a first gear shift input unit to which rotational force is transmitted from the gear shift input unit, and a first gear shift output unit to which rotational force is transmitted from the first gear shift input unit; and a second gear shift unit having a second gear shift input unit to which rotational force is transmitted from the first gear shift output unit, and a second gear shift output unit to which rotational force is transmitted from the second gear shift input unit, wherein the first gear shift unit is configured to select the ratio of the rotational speed of the first gear shift output unit to the rotational speed of the first gear shift input unit from a plurality of first gear ratios, and the second gear shift unit is configured to select the ratio of the rotational speed of the second gear shift output unit to the rotational speed of the second gear shift input unit from a plurality of second gear ratios. According to the component on the 13th side, the first gear shift unit can suitably realize multiple first gear ratios through a first gear input unit and a first gear output unit. According to the component on the 11th side, the second gear shift unit can suitably realize multiple second gear ratios through a second gear input unit and a second gear output unit.

[0019] In a component of a 14th aspect according to a 13th aspect of the present disclosure, the first gear unit has a first planetary gear unit, the first planetary gear unit includes a first planetary gear, a first carrier supporting the first planetary gear, a first sun gear meshing with the first planetary gear, and a first ring gear meshing with the first planetary gear, wherein one of a plurality of first gear ratios is selected by controlling the rotational state of one of the first sun gear, the first carrier, and the first ring gear; the second gear unit has a second planetary gear unit, the second planetary gear unit includes a second planetary gear, a second carrier supporting the second planetary gear, a second sun gear meshing with the second planetary gear, and a second ring gear meshing with the second planetary gear, wherein one of a plurality of second gear ratios is selected by controlling the rotational state of one of the second sun gear, the second carrier, and the second ring gear. According to the component of the 14th aspect, by controlling the rotation state of one of the first sun gear, the first carrier, and the first ring gear, the first speed shift unit can suitably select one of a plurality of first gear ratios. According to the component of the 14th aspect, by controlling the rotation state of one of the second sun gear, the second carrier, and the second ring gear, the second speed shift unit can suitably select one of a plurality of second gear ratios.

[0020] In the component of the 15th aspect according to the 14th aspect of the present disclosure, the component further comprises a shift control unit that controls the speed shift unit, and the shift control unit is configured to control the rotation state of the first ring gear and the rotation state of the second ring gear. According to the component of the 15th aspect, the shift control unit can suitably perform speed shifting by controlling the rotation state of the first ring gear and the rotation state of the second ring gear.

[0021] In the component of the 16th aspect according to the 14th or 15th aspect of the present disclosure, the output rotating body is configured to be connected via a connecting portion that connects the output rotating body and the first carrier. According to the component of the 16th aspect, since the output rotating body and the first carrier are connected by the connecting portion, rotational force can be suitably transmitted from the output rotating body to the first carrier.

[0022] In the component of the 17th aspect according to any one of the 1st to 16th aspects of the present disclosure, the input shaft is a crankshaft of the human-powered vehicle. According to the component of the 17th aspect, the human-powered driving force input to the crankshaft can be suitably shifted.

[0023] In the component of the 18th aspect according to any one of the 1st to 17th aspects of the present disclosure, the component further comprises an output unit that outputs the rotational force of the shift output unit, and the output unit has an output center axis that is different from the input center axis. According to the component on the 18th side, the output unit has an output central axis different from the input central axis, so the output unit can be positioned at a different location from the input axis.

[0024] In the component of the 19th aspect according to the 18th aspect of this disclosure, the output center axis is configured to be concentric with the gear shift center axis. According to the component on the 19th side, the output center axis is configured concentrically with the gear shift center axis, thus suppressing the enlargement of the component in the radial direction of the output center axis.

[0025] A component of a 20th aspect according to any one of the first to 19th aspects of this disclosure further comprises a housing that defines an internal space, wherein the rotation ratio changing unit and the speed changing unit are disposed in the internal space. According to the component on the 20th side, the rotation ratio changing unit and the speed change unit are located in the internal space of the housing, thus protecting the rotation ratio changing unit and the speed change unit. [Effects of the Invention]

[0026] The components for human-powered vehicles disclosed herein can contribute to the design flexibility of components for human-powered vehicles. [Brief explanation of the drawing]

[0027] [Figure 1] This is a side view of the drive mechanism of a human-powered vehicle, including components for a human-powered vehicle according to an embodiment. [Figure 2] Figure 1 is a perspective view of the components for a human-powered vehicle. [Figure 3] Figure 1 is a plan view of the components for a human-powered vehicle. [Figure 4] Figure 1 is a side view of the components for the human-powered vehicle, with the second housing omitted. [Figure 5] Figure 1 is a side view of the components for the human-powered vehicle, seen from the opposite side to Figure 4, with the first housing omitted. [Figure 6]Figure 1 is a perspective view showing the components for a human-powered vehicle, specifically the first housing and the members attached to the first housing. [Figure 7] Figure 1 is a perspective view showing the components for a human-powered vehicle, specifically the second housing and the members attached to the second housing. [Figure 8] Figure 1 is a plan view showing the components for a human-powered vehicle, specifically the parts housed inside the housing. [Figure 9] Figure 5 is a cross-sectional view of the components for the human-powered vehicle along the line D9-D9. [Figure 10] Figure 9 is a cross-sectional view showing an enlarged view of the rotation ratio changing section and its surrounding area. [Figure 11] Figure 6 is a perspective view of the support section. [Figure 12] This is a cross-sectional view showing an enlarged view of the gear shifting section and its surrounding area in Figure 9. [Figure 13] Figure 1 is a skeleton diagram showing the power transmission path of the components for a human-powered vehicle. [Figure 14] This is a schematic diagram of the components for the first modified example of a human-powered vehicle. [Figure 15] This is a side view of the drive mechanism of a human-powered vehicle, including the components for the second modified example. [Figure 16] This is a schematic diagram of the components for the human-powered vehicle in the third modification example. [Figure 17] This is a schematic diagram of the components for the human-powered vehicle in the fourth modification example. [Modes for carrying out the invention]

[0028] <Embodiment> A component 20 for a human-powered vehicle will be described with reference to Figures 1 to 13. A human-powered vehicle is a vehicle having at least one wheel and capable of being driven by at least human power. Human-powered vehicles include various types of bicycles, such as mountain bikes, road bikes, city bikes, cargo bikes, handbikes, and recumbent bikes. The number of wheels a human-powered vehicle may have is not limited. Human-powered vehicles also include, for example, unicycles and vehicles with two or more wheels. Human-powered vehicles are not limited to vehicles that can be driven solely by human power. Human-powered vehicles include so-called e-bikes that utilize the driving force of an electric motor in addition to human power for propulsion. E-bikes include electric assist bicycles in which propulsion is assisted by an electric motor. In the following embodiments, a human-powered vehicle will be described as a bicycle.

[0029] A human-powered vehicle includes, for example, a body and wheels. The body includes, for example, a frame. The wheels are mounted on, for example, the frame. The wheels include front wheels and rear wheels. The human-powered vehicle includes an input shaft 26 that is rotatable relative to the frame. Crank arms 10 are provided at each end of the input shaft 26 in the axial direction AX. Pedals are connected to each of the crank arms 10. Human-powered driving force is input to the input shaft 26 from the crank arms 10 and the pedals.

[0030] As shown in Figure 1, the human-powered vehicle includes component 20. Component 20 is provided, for example, in the transmission path of human-powered driving force from the input shaft 26 to the drive wheels of the human-powered vehicle. The drive wheels include, for example, at least one of the front and rear wheels. The drive wheels include, for example, the rear wheels. Component 20 is arranged around the input central axis C1 of the input shaft 26. Component 20 may be provided on the axle of the drive wheel. Component 20 is mounted on the frame.

[0031] As shown in Figures 2 to 7, component 20 further comprises, for example, a housing 22. The housing 22 defines, for example, an internal space 24. The housing 22 includes a first housing 28 and a second housing 30.

[0032] Component 20 includes, for example, an input shaft 26, a first housing 28, a second housing 30, a rotation ratio changing unit 32, and a speed change unit 34. The rotation ratio changing unit 32 and the speed change unit 34 are arranged in the internal space 24 of component 20. At least a portion of the rotation ratio changing unit 32 is provided in, for example, the first housing 28. At least a portion of the speed change unit 34 is provided in, for example, the second housing 30.

[0033] Component 20 further comprises, for example, an output unit 36. The output unit 36 ​​includes, for example, at least one of a sprocket, a pulley, and a bevel gear. The output unit 36 ​​is provided, for example, outside the internal space 24 of component 20. The output unit 36 ​​is provided, for example, in a second housing 30. The output unit 36 ​​is configured to engage with, for example, a transmission body 12 to which human-powered driving force is transmitted from the output unit 36. The transmission body 12 includes, for example, at least one of a chain, a belt, and a shaft. The output unit 36 ​​transmits driving force to the rear wheel, for example, via a sprocket and a chain. The output unit 36 ​​is connected, for example, to the rotating body 14 of the drive wheel via the transmission body 12. The drive wheel includes, for example, at least one of a front wheel and a rear wheel. The drive wheel includes, for example, a rear wheel.

[0034] The output unit 36 ​​is configured to transmit driving force to the drive wheels, for example, via the transmission body 12. With the housing 22 mounted on the frame, the driving force output from the component 20 is configured to be transmitted to the drive wheels of the human-powered vehicle via the transmission body 12.

[0035] In the transmission path for human-powered drive, a first one-way clutch may be provided between the input shaft 26 and the output unit 36. The first one-way clutch includes, for example, at least one of a roller clutch, a claw clutch, and a sprag clutch. The first one-way clutch causes the output unit 36 ​​to rotate forward when the input shaft 26 rotates forward. The first one-way clutch also suppresses the backward rotation of the output unit 36 ​​when the input shaft 26 rotates backward. The direction of forward rotation of the input shaft 26 corresponds, for example, to the direction of rotation of the input shaft 26 when the human-powered vehicle moves forward. The direction of forward rotation of the input shaft 26 corresponds, for example, to the direction of rotation of the rotating body 14 when the human-powered vehicle moves forward.

[0036] As shown in Figures 2 and 3, the housing 22 includes, for example, a housing projection 22A. The housing projection 22A protrudes, for example, in a direction intersecting the input central axis C1 of the input shaft 26. The housing 22 includes, for example, a plurality of housing projections 22A. In this embodiment, the number of plurality of housing projections 22A is three. The plurality of housing projections 22A are arranged, for example, to surround the input central axis C1 of the input shaft 26. The component 20 further comprises, for example, a frame fastening member. The housing projection 22A is provided with, for example, a frame mounting hole 22B. The frame fastening member connects, for example, a hole in the frame to the frame mounting hole 22B. The component 20 is attached to the frame by the frame fastening member. In this embodiment, the housing projection 22A and the frame mounting hole 22B are provided, for example, in the second housing 30.

[0037] As shown in Figures 4 to 7, the second housing 30 is, for example, separate from the first housing 28. The second housing 30 is, for example, attached to the first housing 28. The second housing 30 is, for example, removably attached to the first housing 28. The second housing 30 is, for example, attached to the first housing 28 so as to be in contact with the first housing 28. The second housing 30 may be provided to be in indirect contact with the first housing 28. If the second housing 30 is provided to be in indirect contact with the first housing 28, a spacer or sealing member may be provided between the second housing 30 and the first housing 28. The spacer or sealing member contacts the first housing 28 and the second housing 30, thereby causing the first housing 28 and the second housing 30 to be in indirectly in contact via the spacer or sealing member.

[0038] The first housing 28 includes, for example, a first mounting portion 28A. The second housing 30 includes, for example, a second mounting portion 30A. The component 20 further comprises, for example, a housing fastening member 38. The housing fastening member 38 connects the first housing 28 and the second housing 30 via the first mounting portion 28A and the second mounting portion 30A. The housing fastening member 38 includes, for example, a bolt. For example, one of the first mounting portion 28A and the second mounting portion 30A includes a through hole, and the other of the first mounting portion 28A and the second mounting portion 30A includes a female thread. Both the first mounting portion 28A and the second mounting portion 30A may include a through hole, and the housing fastening member 38 may include a bolt and a nut. The first housing 28 may be attached to the second housing 30 by, for example, press-fitting, welding, and adhesive.

[0039] The input shaft 26 shown in Figures 2 to 7 is, for example, to which human power is input. The input shaft 26 has, for example, an input central axis C1. The input shaft 26 is, for example, the crankshaft 26A of a human-powered vehicle. The first housing 28 includes, for example, a first input shaft mounting hole 28B. The second housing 30 includes, for example, a second input shaft mounting hole 30B. The input shaft 26 is positioned to pass through the first housing 28, the internal space 24 of the housing 22, and the second housing 30.

[0040] As shown in Figure 9, component 20 further comprises, for example, a first input shaft bearing 40 and a second input shaft bearing 42. The first input shaft bearing 40 is provided, for example, in a first housing 28. The first input shaft bearing 40 rotatably supports, for example, an input shaft 26 relative to the first housing 28. The first input shaft bearing 40 includes, for example, a rolling bearing. The first input shaft bearing 40 may also include a sliding bearing. The first input shaft bearing 40 is provided, for example, in a first input shaft mounting hole 28B formed in the first housing 28. If the first input shaft bearing 40 includes a rolling bearing, for example, the outer ring of the rolling bearing is press-fitted into the first input shaft mounting hole 28B. The second input shaft bearing 42 is provided, for example, in a second housing 30. The second input shaft bearing 42 rotatably supports, for example, an input shaft 26 relative to the second housing 30. The second input shaft bearing 42 includes, for example, a rolling bearing. The second input shaft bearing 42 may include a sliding bearing. The second input shaft bearing 42 is provided, for example, in a second input shaft mounting hole 30B formed in the second housing 30. If the second input shaft bearing 42 includes a rolling bearing, for example, the outer ring of the rolling bearing is press-fitted into the second input shaft mounting hole 30B.

[0041] The rotation ratio changing unit 32 shown in Figures 5, 6, 9, and 10 is provided, for example, in the transmission path of human-powered driving force. The rotation ratio changing unit 32 is configured to change, for example, the ratio of the rotation speed of the output rotating body 46 to the rotation speed of the input rotating body 44. The rotation ratio changing unit 32 includes, for example, an input rotating body 44, an output rotating body 46, and a transmission rotating body 48. The rotation ratio changing unit 32 receives, for example, the rotational force of the input shaft 26. The input rotating body 44 is connected, for example, to the input shaft 26. The input rotating body 44 has a connecting portion 44A that connects the input rotating body 44 to the input shaft 26. The connecting portion 44A is provided, for example, with a spline. The input rotating body 44 engages with the input shaft 26, for example, by the spline. The input rotating body 44 may engage with the input shaft 26 by, for example, press-fitting the input shaft 26, or it may be formed integrally with the input shaft 26. The input rotating body 44 rotates, for example, around the input central axis C1 of the input shaft 26. The input rotating body 44 includes, for example, an input gear 44B.

[0042] The input rotating body 44 is positioned such that it does not overlap the output rotating body 46 when viewed from, for example, the input axis direction AX1 with respect to the input central axis C1. The input axis direction AX1 is, for example, equal to the axis direction AX. The input rotating body 44 is positioned away from the output rotating body 46 when viewed from, for example, the input axis direction AX1 with respect to the input central axis C1.

[0043] If the input rotating body 44 rotates either clockwise or counterclockwise when viewed from the input axis direction AX1 with respect to the input central axis C1, then, for example, the output rotating body 46 is configured to rotate either clockwise or counterclockwise when viewed from the input axis direction AX1. The input rotating body 44 is configured to rotate in the same direction as the output rotating body 46, for example. If the input rotating body 44 rotates clockwise when viewed from the input axis direction AX1, for example, the output rotating body 46 is configured to rotate clockwise when viewed from the input axis direction AX1. If the input rotating body 44 rotates counterclockwise when viewed from the input axis direction AX1, for example, the output rotating body 46 is configured to rotate counterclockwise when viewed from the input axis direction AX1.

[0044] The output rotor 46 is connected, for example, to the gear shift unit 34. The output rotor 46 rotates, for example, around the gear shift center axis C2 of the gear shift unit 34. The output rotor 46 includes, for example, an output gear 46A. The output rotor 46 includes, for example, a first end 46B and a second end 46C in the axial direction AX with respect to the gear shift center axis C2. The first end 46B and the second end 46C are formed to extend in the axial direction AX with respect to the gear shift center axis C2. The first end 46B is, for example, the end on the second housing 30 side in the axial direction AX. The second end 46C is, for example, the end on the first housing 28 side in the axial direction AX.

[0045] The transmission rotor 48 transmits, for example, the rotational force of the input rotor 44 to the output rotor 46. The transmission rotor 48 rotates, for example, around a transmission axis C3 that is different from both the input axis C1 and the speed-shifting axis C2. The transmission axis C3 is, for example, substantially parallel to the input axis C1. In this embodiment, "substantially parallel" means, for example, that they are perfectly parallel, or that they are not perfectly parallel but can be considered perfectly parallel. They can be considered perfectly parallel if, for example, the non-parallel position does not significantly affect the performance of the component 20.

[0046] Component 20 includes, for example, a transmission shaft 50. The transmission shaft 50 has a transmission center axis C3. The transmission shaft 50 supports, for example, a transmission rotor 48. The transmission shaft 50 is configured separately from, for example, the transmission rotor 48. The transmission shaft 50 is mounted on the first housing 28, for example, so as not to rotate relative to the first housing 28. The transmission rotor 48 is mounted on the transmission rotor 48, for example, so as to rotate around the transmission shaft 50. The transmission shaft 50 supports the transmission rotor 48 via, for example, a transmission rotor bearing 50A. The transmission rotor bearing 50A may be a sliding bearing or a rolling bearing. The transmission shaft 50 may be configured integrally with the transmission rotor 48. If the transmission shaft 50 is configured integrally with the transmission rotor 48, the transmission shaft 50 is mounted on the first housing 28 so as to be rotatable relative to the first housing 28.

[0047] The transmission gear 48 includes, for example, a first transmission gear 48A that meshes with the input gear 44B and a second transmission gear 48B that meshes with the output gear 46A. The first transmission gear 48A is formed integrally with, for example, the second transmission gear 48B. The first transmission gear 48A and the second transmission gear 48B constitute, for example, a stepped gear. The first transmission gear 48A and the second transmission gear 48B may be configured separately. The number of teeth of the first transmission gear 48A is different from, for example, the number of teeth of the second transmission gear 48B. The number of teeth of the first transmission gear 48A is less than, for example, the number of teeth of the second transmission gear 48B.

[0048] As shown in Figures 5, 6, 10, and 11, component 20 further comprises, for example, a support 52. The support 52 is attached, for example, to the first housing 28. The support 52 is attached to the first housing 28, for example, by bolts or the like. The support 52 supports, for example, a transmission rotor 48. The support 52 rotatably supports the transmission rotor 48 relative to the first housing 28. The support 52 includes, for example, a transmission rotor support 52A. The transmission rotor support 52A includes, for example, a hole into which the end of the transmission rotor shaft 50 is inserted. The end of the transmission rotor shaft 50 on the second housing 30 side is inserted, for example, into the hole of the transmission rotor support 52A. The end of the transmission rotor shaft 50 on the first housing 28 side is positioned, for example, in a transmission recess 28C provided in the first housing 28. The support 52 supports the transmission rotor 48, for example, via the transmission rotor shaft 50.

[0049] The first housing 28 and the support portion 52 define, for example, an arrangement space 54. The arrangement space 54 is, for example, the space inside an arrangement chamber 54S. The arrangement chamber 54S is, for example, the portion defined by the inner surface of the first housing 28 and the surface of the support portion 52 on the first housing 28 side. At least a portion of the transmission rotor 48 is arranged in the arrangement space 54. In this embodiment, at least a portion of the transmission rotor 48 and at least a portion of the output rotor 46 are arranged in the arrangement space 54.

[0050] Component 20 further comprises, for example, a first output rotor bearing 56 that rotatably supports the first end 46B of the output rotor 46. The first output rotor bearing 56 is provided, for example, in a support 52. The first output rotor bearing 56 may be a sliding bearing or a rolling bearing. The first housing 28 has, for example, an output recess 28D in which the second end 46C of the output rotor 46 on the first housing 28 side is located. The support 52 includes, for example, an output rotor support 52B. The output rotor support 52B includes, for example, a hole. The first output rotor bearing 56 is provided, for example, inside the hole in the output rotor support 52B. Component 20 further comprises, for example, a second output rotor bearing 58 that rotatably supports the second end 46C of the output rotor 46. The second output rotor bearing 58 is provided, for example, in the first housing 28. The second output rotating body bearing 58 may be a sliding bearing or a rolling bearing. The second output rotating body bearing 58 is provided, for example, in the output recess 28D.

[0051] The first change ratio, which is the ratio of the rotational speed of the transmission rotor 48 to the rotational speed of the input rotor 44, is, for example, greater than 1.0. The first change ratio is, for example, greater than 2.0. The first change ratio is, for example, greater than 2.5. The first change ratio is, for example, 2.882. The second change ratio, which is the ratio of the rotational speed of the output rotor 46 to the rotational speed of the transmission rotor 48, is, for example, greater than 1.0. The second change ratio is, for example, greater than 1.5. The second change ratio is, for example, greater than 2.0. The second change ratio is, for example, 2.158. The first change ratio is, for example, greater than the second change ratio. The final change ratio, which is the ratio of the rotational speed of the output rotor 46 to the rotational speed of the input rotor 44, is, for example, greater than 1.0. The final change ratio is calculated, for example, by multiplying the first change ratio and the second change ratio. The final change ratio is, for example, greater than 3.0. The final change ratio is, for example, greater than 5.0. The final change ratio is, for example, greater than 6.0. The final change ratio is, for example, 6.220.

[0052] The gear shift unit 34 shown in Figures 4, 7, 9 to 12 is provided, for example, in the transmission path of human-powered driving force. The gear shift unit 34 includes, for example, a gear shift input unit 60, a gear shift output unit 62, a gear shift central axis C2, and a shaft member 64. The gear shift central axis C2 is different from, for example, the input central axis C1. The gear shift central axis C2 is, for example, substantially parallel to the input central axis C1. The shaft member 64 is configured to rotate, for example, around the gear shift central axis C2.

[0053] The gear shift input unit 60 receives rotational force from, for example, the rotation ratio changing unit 32. The gear shift unit 34 is configured to change the gear ratio, which is the ratio of the rotational speed of the gear shift output unit 62 to the rotational speed of the gear shift input unit 60. The gear shift unit 34 includes, for example, a gear shift unit housing 34A that houses at least a portion of the gear shift unit 34. The gear shift unit housing 34A is provided in, for example, the second housing 30.

[0054] The gear shift input unit 60 is provided, for example, in the second housing 30. The gear shift input unit 60 is mounted on the output rotor 46 so as to be movable in the axial direction AX relative to the output rotor 46. The output rotor 46 is configured, for example, to connect the output rotor 46 and the gear shift input unit 60. Component 20 further comprises, for example, a coupling unit 60A. The coupling unit 60A may be integrated with the output rotor 46 or separate. The coupling unit 60A may be integrated with the gear shift input unit 60 or separate. In this embodiment, the coupling unit 60A is integrated with the gear shift input unit 60. The output rotor 46 includes, for example, gears or splines. The gear shift input unit 60 includes, for example, gears or splines connected to the output rotor 46.

[0055] The gear shift output unit 62 outputs, for example, the rotational force input to the gear shift input unit 60 to the outside. The gear shift output unit 62 is configured to connect to, for example, the output unit 36. The gear shift output unit 62 includes, for example, a gear or spline connected to the output unit 36. The gear shift output unit 62 is supported in the second housing 30 so as to rotate relative to the second housing 30. The gear shift output unit 62 is supported in the second housing 30 via, for example, a gear shift output unit bearing 62A. The gear shift output unit bearing 62A is located, for example, in the output hole 30C of the second housing 30. At least a portion of the gear shift output unit 62 is located outside the housing 22. The output unit 36 ​​outputs, for example, the rotational force of the gear shift output unit 62. The output unit 36 ​​has, for example, an output central axis C4 that is different from the input central axis C1. The output central axis C4 is configured to be concentric with the gear shift central axis C2. The output central axis C4 is configured to rotate, for example, concentrically with the gear shift central axis C2. The output unit 36 ​​is provided, for example, in the transmission path for human-powered driving force.

[0056] The gear shifting unit 34 has, for example, at least one planetary gear mechanism 66. The gear shifting unit 34 can be changed to, for example, a plurality of different gear ratios. The gear shifting unit 34 is configured to select, for example, one of a plurality of gear ratios. At least one of the plurality of gear ratios may be greater than 1.0 or less than 1.0. At least one of the plurality of gear ratios may be 1.0.

[0057] The gear shifting unit 34 further includes, for example, a first gear shifting unit 68 and a second gear shifting unit 70. The first gear shifting unit 68 and the second gear shifting unit 70 are arranged, for example, on a shaft member 64. The gear shifting unit housing 34A houses, for example, at least a portion of the first gear shifting unit 68 and at least a portion of the second gear shifting unit 70.

[0058] As shown in Figures 12 and 13, the first gear shift unit 68 includes, for example, a first gear shift input unit 68A and a first gear shift output unit 68B. The first gear shift input unit 68A receives, for example, rotational force from the gear shift input unit 60. The first gear shift output unit 68B receives, for example, rotational force from the first gear shift input unit 68A. The first gear shift output unit 68B includes, for example, a shaft member 64. The first gear shift unit 68 is configured such that the ratio of the rotational speed of the first gear shift output unit 68B to the rotational speed of the first gear shift input unit 68A can be selected from a plurality of first gear ratios. The plurality of first gear ratios are, for example, all 1.0 or greater. The plurality of first gear ratios are configured such that the rotational speed of the first gear shift output unit 68B is the same as, or increases with respect to, the rotational speed of the first gear shift input unit 68A.

[0059] The second gear shift unit 70 includes, for example, a second gear shift input unit 70A and a second gear shift output unit 70B. The second gear shift input unit 70A receives rotational force from, for example, the first gear shift output unit 68B. The second gear shift output unit 70B receives rotational force from, for example, the second gear shift input unit 70A. The second gear shift input unit 70A includes, for example, a shaft member 64. The second gear shift unit 70 is configured such that the ratio of the rotational speed of the second gear shift output unit 70B to the rotational speed of the second gear shift input unit 70A can be selected from a plurality of second gear ratios. The plurality of second gear ratios are, for example, all 1.0 or less. The plurality of second gear ratios are configured such that the rotational speed of the second gear shift output unit 70B is the same as, or decreases from, the rotational speed of the second gear shift input unit 70A.

[0060] Each of several different gear ratios is determined by, for example, a combination of one selected from several first gear ratios and one selected from several second gear ratios. The number of first gear ratios is, for example, greater than the number of second gear ratios.

[0061] The first gear shift unit 68 has, for example, a plurality of first planetary gear mechanisms 72. Each of the plurality of first gear ratios corresponds, for example, to each of the plurality of first planetary gear mechanisms 72.

[0062] The first gear shift unit 68 includes, for example, a first planetary gear unit 74. The first planetary gear unit 74 includes, for example, a first planetary gear 76, a first sun gear 78 that meshes with the first planetary gear 76, and a first ring gear 80 that meshes with the first planetary gear 76.

[0063] The first planetary gear 76 is, for example, one of a plurality of first planetary gears 76. Each of the plurality of first planetary gears 76 is, for example, spaced apart around the gear shifting center axis C2 of the shaft member 64. The number of plurality of first planetary gears 76 is, for example, 2 or more and 8 or less. The number of plurality of first planetary gears 76 is, for example, 4.

[0064] The first planetary gear 76 includes, for example, a first variable speed planetary gear 76A and a second variable speed planetary gear 76B having a larger pitch circle diameter than the first variable speed planetary gear 76A. The first variable speed planetary gear 76A and the second variable speed planetary gear 76B are formed integrally, for example. The first variable speed planetary gear 76A and the second variable speed planetary gear 76B may be formed separately and configured to rotate as a single unit.

[0065] The first sun gear 78 may be one of a plurality of first sun gears 78. The first sun gear 78 meshes with, for example, the second variable-speed planetary gear 76B. The rotational axis of the first sun gear 78 is substantially equal to the variable-speed axis C2 of the shaft member 64.

[0066] The first ring gear 80 is, for example, one of a plurality of first ring gears 80. Each of the plurality of first ring gears 80 is, for example, rotatable independently of each other. The plurality of first ring gears 80 includes, for example, a first speed-shifting ring gear 80A and a second speed-shifting ring gear 80B. The first speed-shifting ring gear 80A meshes with, for example, a first speed-shifting planetary gear 76A. The second speed-shifting ring gear 80B meshes with, for example, a second speed-shifting planetary gear 76B.

[0067] The first planetary gear unit 74 includes, for example, a first carrier 82 that supports the first planetary gear 76. The first carrier 82 has, for example, a first carrier portion 82A and a second carrier portion 82B. The first carrier portion 82A is formed integrally with the first speed input portion 68A. The output rotor 46 is configured to be connected, for example, via a connecting portion 60A that connects the output rotor 46 and the first carrier 82. The first speed input portion 68A includes, for example, the first carrier 82.

[0068] The first carrier 82 has, for example, a first carrier pin that rotatably supports the first planetary gear 76. The first carrier pin may rotatably support the first planetary gear 76 via a bearing. The first carrier pin has, for example, one end supported by the first carrier portion 82A in the axial direction AX. The first carrier pin has, for example, the other end supported by the second carrier portion 82B in the axial direction AX.

[0069] The second gear shift unit 70 has, for example, a plurality of second planetary gear mechanisms 84. Each of the plurality of second gear ratios corresponds, for example, to each of the plurality of second planetary gear mechanisms 84.

[0070] The second gearbox 70 includes, for example, a second planetary gear unit 86. The second planetary gear unit 86 includes, for example, a second planetary gear 88, a second sun gear 90 that meshes with the second planetary gear 88, and a second ring gear 92 that meshes with the second planetary gear 88.

[0071] The second planetary gear 88 is, for example, one of a plurality of second planetary gears 88. Each of the plurality of second planetary gears 88 is, for example, spaced apart around the gear shifting center axis C2 of the shaft member 64. The number of plurality of second planetary gears 88 is, for example, 2 or more and 8 or less. The number of plurality of second planetary gears 88 is, for example, 4.

[0072] The second planetary gear 88 includes, for example, a third variable-speed planetary gear 88A and a fourth variable-speed planetary gear 88B having a smaller pitch circle diameter than the third variable-speed planetary gear 88A. The third variable-speed planetary gear 88A and the fourth variable-speed planetary gear 88B are formed integrally, for example. The third variable-speed planetary gear 88A and the fourth variable-speed planetary gear 88B may be formed separately and configured to rotate as a single unit.

[0073] The second sun gear 90 may be one of several second sun gears 90. The second sun gear 90 meshes with, for example, the fourth variable speed planetary gear 88B. The rotational axis of the second sun gear 90 is substantially equal to the variable speed axis C2 of the shaft member 64.

[0074] The second ring gear 92 includes, for example, a third variable speed ring gear 92A. The second ring gear 92 meshes with, for example, a third variable speed planetary gear 88A. The second ring gear 92 may be one of a plurality of second ring gears 92. In this case, each of the plurality of second ring gears 92 can rotate independently of each other, for example.

[0075] The second planetary gear unit 86 includes, for example, a second carrier 94 that supports the second planetary gear 88. The second carrier 94 has, for example, a third carrier portion 94A and a fourth carrier portion 94B.

[0076] The second carrier 94 has, for example, a second carrier pin that rotatably supports the second planetary gear 88. The second carrier pin may rotatably support the second planetary gear 88 via a bearing. One end of the second carrier pin is supported by the third carrier portion 94A in the axial direction AX, for example. The other end of the second carrier pin is supported by the fourth carrier portion 94B in the axial direction AX, for example.

[0077] The first gear shift unit 68 further includes, for example, a third planetary gear unit 96. The first planetary gear mechanism 72 includes, for example, a third planetary gear unit 96. The third planetary gear unit 96 includes, for example, a third planetary gear 98, a third sun gear 100 that meshes with the third planetary gear 98, and a third ring gear 102 that meshes with the third planetary gear 98.

[0078] The third planetary gear 98 is, for example, one of a plurality of third planetary gears 98. Each of the plurality of third planetary gears 98 is, for example, spaced apart around the gear shifting center axis C2 of the shaft member 64. The number of plurality of third planetary gears 98 is, for example, 2 or more and 8 or less. The number of plurality of third planetary gears 98 is, for example, 4.

[0079] The third planetary gear 98 includes, for example, a fifth variable-speed planetary gear 98A and a sixth variable-speed planetary gear 98B having a larger pitch circle diameter than the fifth variable-speed planetary gear 98A. The fifth variable-speed planetary gear 98A and the sixth variable-speed planetary gear 98B are formed integrally, for example. The fifth variable-speed planetary gear 98A and the sixth variable-speed planetary gear 98B may be formed separately and configured to rotate as a single unit.

[0080] The third sun gear 100 may be one of a plurality of third sun gears 100. The third sun gear 100 meshes with, for example, the fifth variable speed planetary gear 98A. The rotational axis of the third sun gear 100 is substantially equal to the variable speed axis C2 of the shaft member 64.

[0081] The first sun gear 78 and the third sun gear 100 are formed as a single unit, for example. The first sun gear 78 and the third sun gear 100 may be formed separately and configured to rotate as a single unit. The pitch circle diameter of the first sun gear 78 is smaller than, for example, the pitch circle diameter of the third sun gear 100.

[0082] The first sun gear 78 and the third sun gear 100 are formed, for example, separately from the shaft member 64 and configured to rotate integrally with the shaft member 64. The first sun gear 78 and the third sun gear 100 are formed, for example, on the outer circumference of the first cylindrical member 104A. A first engaging portion 104B is formed on the inner circumference of the first cylindrical member 104A. The first engaging portion 104B includes, for example, a spline or serrations. The first engaging portion 104B engages, for example, with the first shaft member engaging portion 64A of the shaft member 64. The first shaft member engaging portion 64A includes, for example, a spline or serrations. The first shaft member engaging portion 64A is formed integrally with the shaft member 64. The first sun gear 78 and the third sun gear 100 may be formed integrally with the shaft member 64.

[0083] The third ring gear 102 is, for example, one of a plurality of third ring gears 102. Each of the plurality of third ring gears 102 is, for example, rotatable independently of each other. The plurality of third ring gears 102 includes, for example, a fourth variable speed ring gear 102A and a fifth variable speed ring gear 102B. The fourth variable speed ring gear 102A meshes with, for example, a fifth variable speed planetary gear 98A. The fifth variable speed ring gear 102B meshes with, for example, a sixth variable speed planetary gear 98B.

[0084] The third planetary gear unit 96 includes, for example, a third carrier 106 that supports the third planetary gear 98. The third carrier 106 has, for example, a first carrier portion 82A and a second carrier portion 82B.

[0085] The third carrier 106 has, for example, a third carrier pin that rotatably supports the third planetary gear 98. The third carrier pin may rotatably support the third planetary gear 98 via a bearing. The third carrier pin has, for example, one end supported by the first carrier portion 82A in the axial direction AX. The first carrier pin has, for example, the other end supported by the second carrier portion 82B in the axial direction AX.

[0086] A portion of the first carrier 82 is formed integrally with, for example, a portion of the third carrier 106. The first carrier portion 82A is, for example, a portion of the first carrier 82 and a portion of the third carrier 106. The second carrier portion 82B is, for example, a portion of the first carrier 82 and a portion of the third carrier 106.

[0087] The second gearbox 70 further includes, for example, a fourth planetary gear unit 108. The fourth planetary gear unit 108 includes, for example, a fourth planetary gear 110, a fourth sun gear 112 that meshes with the fourth planetary gear 110, and a fourth ring gear 114 that meshes with the fourth planetary gear 110.

[0088] The fourth planetary gear 110 is, for example, one of a plurality of fourth planetary gears 110. Each of the plurality of fourth planetary gears 110 is, for example, spaced apart around the gear shifting center axis C2 of the shaft member 64. The number of the plurality of fourth planetary gears 110 is, for example, 2 or more and 8 or less. The number of the plurality of fourth planetary gears 110 is, for example, 4. The fourth planetary gear 110 includes, for example, a seventh gear shifting planetary gear 110A.

[0089] The fourth sun gear 112 may be one of a plurality of fourth sun gears 112. The fourth sun gear 112 meshes with, for example, the fourth planetary gear 110. The rotational axis of the fourth sun gear 112 is substantially equal to the speed-shifting axis C2 of the shaft member 64.

[0090] The second sun gear 90 and the fourth sun gear 112 are formed as a single unit, for example. The second sun gear 90 and the fourth sun gear 112 may be formed separately and configured to rotate as a single unit.

[0091] The second sun gear 90 and the fourth sun gear 112 are formed separately from the shaft member 64, for example, and rotate integrally with the shaft member 64. The second sun gear 90 and the fourth sun gear 112 are formed, for example, on the outer circumference of the second cylindrical member 104C. A second engaging portion 104D is formed on the inner circumference of the second cylindrical member 104C. The second engaging portion 104D includes, for example, splines or serrations. The second engaging portion 104D engages with, for example, the second shaft member engaging portion 64B of the shaft member 64. The second shaft member engaging portion 64B includes, for example, splines or serrations. The second shaft member engaging portion 64B is formed integrally with the shaft member 64, for example. The second sun gear 90 and the fourth sun gear 112 may be formed integrally with the shaft member 64, for example.

[0092] The fourth ring gear 114 includes, for example, a sixth variable-speed ring gear 114A. The fourth ring gear 114 meshes with, for example, a fourth planetary gear 110. The fourth ring gear 114 may be one of a plurality of fourth ring gears 114. In this case, each of the plurality of fourth ring gears 114 can rotate independently of each other, for example.

[0093] The fourth planetary gear unit 108 includes, for example, a fourth carrier 116 that supports the fourth planetary gear 110. The fourth carrier 116 has, for example, a third carrier portion 94A and a fourth carrier portion 94B.

[0094] The fourth carrier 116 has, for example, a fourth carrier pin that rotatably supports the fourth planetary gear 110. The fourth carrier pin may rotatably support the fourth planetary gear 110 via a bearing. One end of the fourth carrier pin is supported by the third carrier portion 94A in the axial direction AX, for example. The other end of the fourth carrier pin is supported by the fourth carrier portion 94B in the axial direction AX, for example.

[0095] The second gearbox 70 further includes, for example, a fifth planetary gear unit 118. The fifth planetary gear unit 118 includes, for example, a fifth planetary gear 120, a fifth carrier 122 supporting the fifth planetary gear 120, a fifth sun gear 124 meshing with the fifth planetary gear 120, and a fifth ring gear 126 meshing with the fifth planetary gear 120.

[0096] The fifth planetary gear 120 is, for example, one of a plurality of fifth planetary gears 120. Each of the plurality of fifth planetary gears 120 is, for example, spaced apart around the speed-shifting central axis C2 of the shaft member 64. The number of plurality of fifth planetary gears 120 is, for example, 2 or more and 8 or less. The number of plurality of fifth planetary gears 120 is, for example, 4.

[0097] The fifth planetary gear 120 includes, for example, an eighth variable-speed planetary gear 120A and a ninth variable-speed planetary gear 120B having a larger pitch circle diameter than the eighth variable-speed planetary gear 120A. The eighth variable-speed planetary gear 120A and the ninth variable-speed planetary gear 120B are formed integrally, for example. The eighth variable-speed planetary gear 120A and the ninth variable-speed planetary gear 120B may be formed separately and configured to rotate as a single unit.

[0098] The fifth sun gear 124 may be one of a plurality of fifth sun gears 124. The fifth sun gear 124 meshes with, for example, the ninth variable-speed planetary gear 120B. The rotational axis of the fifth sun gear 124 is substantially equal to the variable-speed axis C2 of the shaft member 64.

[0099] The fifth sun gear 124 may be formed integrally with the shaft member 64, for example. The fifth sun gear 124 may be formed separately from the shaft member 64 and connected by splines or serrations to rotate integrally with the shaft member 64.

[0100] The first sun gear 78, the second sun gear 90, the third sun gear 100, the fourth sun gear 112, and the fifth sun gear 124 are configured to rotate together, for example, clockwise, with respect to the output rotating body 46 around the speed-shifting central axis C2 of the shaft member 64. The first sun gear 78, the second sun gear 90, the third sun gear 100, the fourth sun gear 112, and the fifth sun gear 124 may also be configured to rotate together, for example, counterclockwise, with respect to the output rotating body 46 around the speed-shifting central axis C2 of the shaft member 64.

[0101] The pitch circle diameter of the first solar gear 78 is, for example, larger than the pitch circle diameter of the fifth solar gear 124. The pitch circle diameter of the first solar gear 78 is, for example, smaller than the respective pitch circle diameters of the second solar gear 90, the third solar gear 100, and the fourth solar gear 112.

[0102] The pitch circle diameter of the second solar gear 90 is larger than, for example, the pitch circle diameters of the first solar gear 78 and the fifth solar gear 124. The pitch circle diameter of the second solar gear 90 is smaller than, for example, the pitch circle diameters of the third solar gear 100 and the fourth solar gear 112.

[0103] The pitch circle diameter of the third solar gear 100 is larger than, for example, the pitch circle diameters of the first solar gear 78, the second solar gear 90, the fourth solar gear 112, and the fifth solar gear 124.

[0104] The pitch circle diameter of the fourth solar gear 112 is, for example, larger than the pitch circle diameters of the first solar gear 78, the second solar gear 90, and the fifth solar gear 124. The pitch circle diameter of the fourth solar gear 112 is, for example, smaller than that of the third solar gear 100.

[0105] The fifth solar gear 124 is smaller than, for example, the pitch circle diameter of the first solar gear 78, the second solar gear 90, the third solar gear 100, and the fourth solar gear 112.

[0106] The fifth ring gear 126 includes, for example, the seventh variable speed ring gear 126A. The fifth ring gear 126 meshes with, for example, the eighth variable speed planetary gear 120A. The fifth ring gear 126 may be one of a plurality of fifth ring gears 126. In this case, each of the plurality of fifth ring gears 126 can rotate independently of each other, for example.

[0107] A portion of the fifth carrier 122 is formed integrally with, for example, a portion of the second carrier 94. A portion of the fifth carrier 122 is formed integrally with, for example, a portion of the fourth carrier 116. The second gear shift output unit 70B includes, for example, the fifth carrier 122.

[0108] The fifth carrier 122 has, for example, a fifth carrier pin that rotatably supports the fifth planetary gear 120. The fifth carrier 122 includes, for example, a third carrier portion 94A, a fourth carrier portion 94B, and a fifth carrier portion 128. The fifth carrier pin is supported, for example, by the third carrier portion 94A, the fourth carrier portion 94B, and the fifth carrier portion 128. One end of the fifth carrier pin is supported by the third carrier portion 94A in the axial direction AX. The other end of the fifth carrier pin is supported by the fifth carrier portion 128 in the axial direction AX. The fourth carrier portion 94B is positioned, for example, between the third carrier portion 94A and the fifth carrier portion 128. The fourth carrier portion 94B supports, for example, the portion of the fifth carrier pin between the third carrier portion 94A and the fifth carrier portion 128.

[0109] In the first planetary gear unit 74, one of a plurality of first gear ratios is selected by controlling the rotational state of one of the following: the first sun gear 78, the first carrier 82, and the first ring gear 80. In the third planetary gear unit 96, one of a plurality of first gear ratios is selected by controlling the rotational state of one of the following: the third sun gear 100, the third carrier 106, and the third ring gear 102.

[0110] The second planetary gear unit 86 is selected by controlling the rotational state of one of the following: the second sun gear 90, the second carrier 94, and the second ring gear 92. The fourth planetary gear unit 108 is selected by controlling the rotational state of one of the following: the fourth sun gear 112, the fourth carrier 116, and the fourth ring gear 114. The fifth planetary gear unit 118 is selected by controlling the rotational state of one of the following: the fifth sun gear 124, the fifth carrier 122, and the fifth ring gear 126.

[0111] The first gear shift unit 68 selects one of a plurality of first gear ratios by controlling, for example, the rotational state of one of the first ring gear 80 and the third ring gear 102. The second gear shift unit 70 selects one of a plurality of second gear ratios by controlling, for example, the rotational state of one of the second ring gear 92, the fourth ring gear 114, and the fifth ring gear 126. The gear shift unit 34 selects one of a plurality of gear ratios by controlling, for example, the rotational state of one of the first ring gear 80, the second ring gear 92, the third ring gear 102, the fourth ring gear 114, and the fifth ring gear 126.

[0112] The gear shifting unit 34 has, for example, multiple transmission paths. These multiple transmission paths constitute part of the transmission path for human-powered driving force. The rotational force input from the rotation ratio changing unit 32 to the gear shifting input unit 60 is output to the output unit 36 ​​via one of the multiple transmission paths. The multiple 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.

[0113] The first transmission path is, for example, a transmission path through which the driving force input to the first speed input unit 68A is output to the output unit 36 ​​via the third carrier 106, the sixth speed planetary gear 98B, the third sun gear 100, the shaft member 64, the fifth sun gear 124, the ninth speed planetary gear 120B, and the fifth carrier unit 128.

[0114] The second transmission path is, for example, a transmission path through which the driving force input to the first speed input unit 68A is output to the output unit 36 ​​via the third carrier 106, the fifth speed planetary gear 98A, the third sun gear 100, the shaft member 64, the fifth sun gear 124, the ninth speed planetary gear 120B, and the fifth carrier unit 128.

[0115] The third transmission path is, for example, a transmission path through which the driving force input to the first speed input unit 68A is output to the output unit 36 ​​via the first carrier 82, the second speed planetary gear 76B, the first sun gear 78, the shaft member 64, the fifth sun gear 124, the ninth speed planetary gear 120B, and the fifth carrier unit 128.

[0116] The fourth transmission path is, for example, a transmission path through which the driving force input to the first speed input unit 68A is output to the output unit 36 ​​via the first carrier 82, the first speed planetary gear 76A, the second speed planetary gear 76B, the first sun gear 78, the shaft member 64, the fifth sun gear 124, the ninth speed planetary gear 120B, and the fifth carrier unit 128.

[0117] The fifth transmission path is, for example, a transmission path through which the driving force input to the first gear shift input unit 68A is output to the output unit 36 ​​via the third carrier 106, the sixth gear shift planetary gear 98B, the third sun gear 100, the shaft member 64, the fourth sun gear 112, the fourth planetary gear 110, the fourth carrier unit 94B, and the fifth carrier unit 128.

[0118] The sixth transmission path is, for example, a transmission path through which the driving force input to the first gear shift input unit 68A is output to the output unit 36 ​​via the third carrier 106, the fifth gear shift planetary gear 98A, the third sun gear 100, the shaft member 64, the fourth sun gear 112, the fourth planetary gear 110, the fourth carrier unit 94B, and the fifth carrier unit 128.

[0119] The seventh transmission path is, for example, a transmission path through which the driving force input to the first speed input unit 68A is output to the output unit 36 ​​via the first carrier 82, the second speed planetary gear 76B, the first sun gear 78, the shaft member 64, the fourth sun gear 112, the fourth planetary gear 110, the fourth carrier unit 94B, and the fifth carrier unit 128.

[0120] The eighth transmission path is, for example, a transmission path through which the driving force input to the first speed input unit 68A is output to the output unit 36 ​​via the first carrier 82, the first speed planetary gear 76A, the second speed planetary gear 76B, the first sun gear 78, the shaft member 64, the fourth sun gear 112, the fourth planetary gear 110, the fourth carrier unit 94B, and the fifth carrier unit 128.

[0121] The ninth transmission path is, for example, a transmission path through which the driving force input to the first speed input unit 68A is output to the output unit 36 ​​via the third carrier 106, the sixth speed planetary gear 98B, the third sun gear 100, the shaft member 64, the second sun gear 90, the fourth speed planetary gear 88B, the fourth carrier unit 94B, and the fifth carrier unit 128.

[0122] The tenth transmission path is, for example, a transmission path through which the driving force input to the first speed input unit 68A is output to the output unit 36 ​​via the third carrier 106, the fifth speed planetary gear 98A, the third sun gear 100, the shaft member 64, the second sun gear 90, the fourth speed planetary gear 88B, the fourth carrier unit 94B, and the fifth carrier unit 128.

[0123] The 11th transmission path is, for example, a transmission path through which the driving force input to the first speed input unit 68A is output to the output unit 36 ​​via the first carrier 82, the second speed planetary gear 76B, the first sun gear 78, the shaft member 64, the second sun gear 90, the fourth speed planetary gear 88B, the fourth carrier unit 94B, and the fifth carrier unit 128.

[0124] The 12th transmission path is, for example, a transmission path through which the driving force input to the first speed input unit 68A is output to the output unit 36 ​​via the first carrier 82, the first speed planetary gear 76A, the second speed planetary gear 76B, the first sun gear 78, the shaft member 64, the second sun gear 90, the fourth speed planetary gear 88B, the fourth carrier unit 94B, and the fifth carrier unit 128.

[0125] The first to twelfth transmission paths are selected, for example, according to the rotational state of the multiple transmission ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A. The rotational state of the multiple transmission ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A is switched, for example, between a permissible state and a restricted state. In the restricted state, the rotation of the multiple transmission ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A relative to the housing 22 is restricted. In the permissible state, the rotation of the multiple transmission ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A relative to the housing 22 is permitted. In the restricted state, when viewed from the output rotating body 46 around the transmission center axis C2 of the shaft member 64, if only the rotation in one direction that should be prevented from the rotation of the multiple transmission ring gears 80A, 80B, 92A, 102A, 102B, 114A, 126A in order for the transmission unit 34 to transmit human-powered driving force is restricted, the rotation in the other direction does not need to be restricted.

[0126] Table 1 shows the rotational states of the gear ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A included in the first gear shift unit 68 in each transmission path, and the rotational states of the gear ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A included in the second gear shift unit 70. The gear ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A included in the first gear shift unit 68 include, for example, the first gear ring gear 80A, the second gear ring gear 80B, the fourth gear ring gear 102A, and the fifth gear ring gear 102B. The gear shift ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A included in the second gear shift section 70 include, for example, the third gear shift ring gear 92A, the sixth gear shift ring gear 114A, and the seventh gear shift ring gear 126A. In Table 1, the rotation state of the first gear shift ring gear 80A, the second gear shift ring gear 80B, the third gear shift ring gear 92A, the fourth gear shift ring gear 102A, the fifth gear shift ring gear 102B, the sixth gear shift ring gear 114A, and the seventh gear shift ring gear 126A is indicated by "〇". In Table 1, the rotational state of the first gear ring gear 80A, second gear ring gear 80B, third gear ring gear 92A, fourth gear ring gear 102A, fifth gear ring gear 102B, sixth gear ring gear 114A, and seventh gear ring gear 126A is indicated by "×".

[0127] [Table 1]

[0128] As shown in Figures 8 and 12, the restricted and permitted states of each transmission ring gear 80A, 80B, 92A, 102A, 102B, 114A, and 126A are selected by the rotation control unit 132. Each of the transmission ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A has, for example, an engaged portion. The engaged portion is provided, for example, on the outer circumference of each of the transmission ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A.

[0129] As shown in Figure 7, component 20 further comprises, for example, a gear shift control unit 130 that controls the gear shifting unit 34. The gear shift control unit 130 is provided, for example, in the second housing 30. At least a portion of the gear shift control unit 130 is located in a space defined, for example, by the inner surface of the second housing 30. A portion of the gear shift control unit 130 is located in a space defined, for example, by the inner surface of the first housing 28. The entire gear shift control unit 130 may be located in a space defined by the inner surface of the second housing 30.

[0130] As shown in Figures 8 and 12, the gear shift control unit 130 is configured to control, for example, the rotational state of the first ring gear 80 and the rotational state of the second ring gear 92. The gear shift control unit 130 is also configured to control, for example, the rotational state of the third ring gear 102, the rotational state of the fourth ring gear 114, and the rotational state of the fifth ring gear 126.

[0131] The gear shift control unit 130 includes a drive unit 130A. The gear shift control unit 130 controls the gear shift unit 34 to change the gear ratio. The drive unit 130A includes, for example, an electric motor 130B. The gear shift control unit 130 further includes, for example, a reduction gear connected to the electric motor 130B.

[0132] The gear shift control unit 130 includes, for example, a rotation control unit 132 that controls the gear shift unit 34. The rotation control unit 132 includes, for example, a camshaft 134, a cam portion 136, and a control member 138. The control member 138 is provided for, for example, for each gear shift ring gear 80A, 80B, 92A, 102A, 102B, 114A, 126A. The control member 138 operates, for example, between the cam portion 136 and the gear shift ring gears 80A, 80B, 92A, 102A, 102B, 114A, 126A. For example, by controlling the rotation state of the gear shift ring gears 80A, 80B, 92A, 102A, 102B, 114A, 126A, one of several different gear ratios is selected. The control member 138 includes, for example, an engaging portion that engages with an engaged portion.

[0133] The rotation control unit 132 restricts the rotation of the speed-shifting ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A by engaging the engaged portion of the control member 138 with the engaged portion of the speed-shifting ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A. In this case, the speed-shifting ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A are in a restricted state. The rotation control unit 132 allows the rotation state of the speed-shifting ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A by releasing the engagement between the engaging portion of the control member 138 and the engaged portion of the speed-shifting ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A. In this case, the speed-shifting ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A are in an acceptable state.

[0134] The rotation control unit 132 switches from one of the multiple transmission paths to another of the multiple transmission paths by, for example, switching the rotation state of the transmission ring gears 80A, 80B, 92A, 102A, 102B, 114A, and 126A between an allowable state and a restricted state.

[0135] The rotation control unit 132 includes, for example, a first rotation control unit 132A that corresponds to the first gear shift unit 68. The first rotation control unit 132A includes, for example, a first camshaft 134A and controls the first gear shift unit 68. The first rotation control unit 132A is configured to select one of a plurality of first gear ratios of the first gear shift unit 68 by controlling the rotation state of the first ring gear 80 and the third ring gear 102 in accordance with the rotation of the first camshaft 134A.

[0136] The rotation control unit 132 includes, for example, a second rotation control unit 132B that corresponds to the second gear shift unit 70. The second rotation control unit 132B is configured to select one of a plurality of second gear ratios of the second gear shift unit 70 by controlling the rotational state of the second ring gear 92, the fourth ring gear 114, and the fifth ring gear 126 in accordance with the rotation of the second camshaft 134B.

[0137] The gear shift control unit 130 includes, for example, an interlocking mechanism 140. The gear shift control unit 130 includes, for example, a drive shaft 142 that rotates the first camshaft 134A and the second camshaft 134B via the interlocking mechanism 140. The interlocking mechanism 140 interlocks the first camshaft 134A and the second camshaft 134B. The drive shaft 142 extends, for example, parallel to the first camshaft 134A and the second camshaft 134B.

[0138] The interlocking mechanism 140 is configured to interlock the first camshaft 134A and the second camshaft 134B so that, for example, the rotation of any of the first ring gear 80, second ring gear 92, third ring gear 102, fourth ring gear 114, and fifth ring gear 126 is restricted regardless of the rotational phase of the drive shaft 142.

[0139] The drive unit 130A is connected to the drive shaft 142, for example, via a reduction gear. The drive shaft 142 rotates when the electric motor 130B of the drive unit 130A is driven. The drive unit 130A switches the rotation state of the speed ring gears 80A, 80B, 92A, 102A, 102B, 114A, 126A between a restricted state and a permitted state, and selects one of a plurality of transmission paths, for example, by rotating the drive shaft 142. The drive unit 130A switches the rotation state of the speed ring gears 80A, 80B, 92A, 102A, 102B, 114A, 126A between a restricted state and a permitted state, and selects one of the first to twelfth transmission paths, for example, while the drive shaft 142 rotates three times.

[0140] The drive unit 130A may further include a speed control circuit for controlling the electric motor 130B. The speed control circuit may include an inverter circuit for controlling the electric motor 130B. The speed control circuit may include, for example, a speed control device. The speed control device may be provided on, for example, one or more circuit boards. The speed control device may be configured to control, for example, the drive unit 130A. The speed control device may include, for example, an arithmetic processing unit that executes a predetermined control program. The arithmetic processing unit may include, for example, a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). The arithmetic processing units may be provided in multiple locations that are far apart from each other. The speed control device may include one or more microcomputers.

[0141] As shown in Figure 6, at least a portion of the rotation ratio changing unit 32 is provided in the first housing 28, for example, independently of the second housing 30. The rotation ratio changing unit 32 is supported, for example, only by the first housing 28. The members supported by the first housing 28 include, for example, the rotation ratio changing unit 32, a support 52, and an input shaft 26. The input shaft 26 is supported, for example, by both the first housing 28 and the second housing 30.

[0142] As shown in Figure 7, at least a portion of the gear shifting unit 34 is provided in the second housing 30, for example, independently of the first housing 28. The gear shifting unit 34 is supported, for example, solely by the second housing 30. The gear shifting control unit 130 is provided in the second housing 30, for example, independently of the first housing 28. The gear shifting unit 34 is supported, for example, solely by the second housing 30. The members supported by the second housing 30 include, for example, the gear shifting unit 34, the gear shifting control unit 130, the output unit 36, and the input shaft 26.

[0143] Component 20 is manufactured, for example, by attaching the first housing 28 to the second housing 30. When the first housing 28 is attached to the second housing 30, several members are provided in advance on each of the first housing 28 and the second housing 30. At least some of the members provided in advance on one of the first housing 28 and the second housing 30 before the first housing 28 is attached to the second housing 30 are configured so that they are not supported by the other of the first housing 28 and the second housing 30 even after the first housing 28 is attached to the second housing 30.

[0144] As shown in Figure 6, before the first housing 28 is attached to the second housing 30, the first housing 28 is provided with, for example, at least a portion of the rotation ratio changing section 32. Before the first housing 28 is attached to the second housing 30, the first housing 28 is provided with, for example, the entire rotation ratio changing section 32. The transmission rotor 48 and the transmission rotor shaft 50 are provided in the first housing 28 by being sandwiched between the first housing 28 and the support section 52, for example. The output rotor 46 is provided in the first housing 28 by being sandwiched between the first housing 28 and the support section 52, for example.

[0145] As shown in Figure 7, before the first housing 28 is attached to the second housing 30, at least a portion of the gear shifting unit 34 is provided in the second housing 30. Before the first housing 28 is attached to the second housing 30, the entire gear shifting unit 34 is provided in the second housing 30.

[0146] <Example of changes> The description of embodiments is illustrative of possible forms of component 20 according to this disclosure and is not intended to limit its forms. Component 20 according to this disclosure may take, for example, the modified embodiments shown below, and combinations of at least two non-inconsistent modified embodiments. In the modified embodiments below, parts common to the embodiments are denoted by the same reference numerals as in the embodiments and their descriptions are omitted.

[0147] As shown in Figure 14, the rotation ratio changing unit 32 may be configured such that, when viewed from the input axis direction AX1, the transmission center axis C3 is located on the line connecting the input center axis C1 and the output center axis C4. If, as shown in the component 20 in Figure 5, the transmission center axis C3 is not located on the line connecting the input center axis C1 and the output center axis C4 when viewed from the input axis direction AX1, the dimensions of the component 20 in the direction along the line connecting the input center axis C1 and the output center axis C4 can be reduced. In the component 20 of Figure 14, the dimensions of the component 20 in the direction perpendicular to the direction along the line connecting the input center axis C1 and the output center axis C4 can be reduced.

[0148] The input rotating body 44 may be positioned so as to overlap the output rotating body 46 when viewed from the input axis direction AX1 with respect to the input central axis C1.

[0149] As shown in Figure 15, component 20 may further comprise an auxiliary rotating body 144. The auxiliary rotating body 144 is, for example, mounted on the input shaft 26. The auxiliary rotating body 144 is, for example, configured to be rotatable relative to the input shaft 26 about the input central axis C1. The auxiliary rotating body 144 rotates, for example, independently of the input shaft 26. The auxiliary rotating body 144 is, for example, a pulley. The auxiliary rotating body 144 is, for example, configured to engage with the transmission body 12.

[0150] As shown in Figure 16, component 20 may further comprise a third housing 146 and an intermediate transmission unit 148. At least a portion of the intermediate transmission unit 148 is provided, for example, in the third housing 146. In this modified example, the second housing 30 is attached to the first housing 28, for example, via the third housing 146. The intermediate transmission unit 148 transmits, for example, the rotational force of the rotation ratio change unit 32. The intermediate transmission unit 148 transmits rotational force to, for example, the gear change unit 34. The intermediate transmission unit 148 may or may not include a speed increaser or a reduction gear.

[0151] As shown in Figure 17, component 20 may further comprise a fourth housing 150 and a motor 152. The motor 152 is configured, for example, to provide propulsion to a human-powered vehicle. The motor 152 is, for example, an assist motor. At least a portion of the motor 152 is provided, for example, in the fourth housing 150. The second housing 30 is attached to the first housing 28, for example, via the fourth housing 150. The motor 152 includes, for example, a motor rotating shaft 152A. The motor rotating shaft 152A is positioned, for example, at a distance from the shaft member 64. Component 20 further comprises, for example, a resultant unit 154. In this modified example, the motor 152 may be connected to any member included in the human-powered drive transmission path, as long as the motor 152 is configured to input its rotational force into the human-powered drive transmission path. In this modified example, for example, the rotational force of the motor 152 is transmitted to a resultant unit 154 provided in the second housing 30. Component 20 further includes, for example, a motor reducer 152B. The rotational force of the motor 152 is transmitted to the resultant unit 154 via, for example, the motor rotating shaft 152A and the motor reducer 152B. The resultant unit 154 may be provided in the speed change unit 34.

[0152] The component 20 may include multiple transmission axis centers C3. The number of transmission axis centers C3 is, for example, odd. If the number of transmission axis centers C3 is even, the rotation ratio changing unit 32 may further include, for example, a predetermined planetary gear mechanism between the output rotating body 46 and the speed change unit 34. The predetermined planetary gear mechanism is configured, for example, such that the direction of rotation input to the predetermined planetary gear mechanism is opposite to the direction of rotation output from the predetermined planetary gear mechanism.

[0153] The input rotating body 44, the output rotating body 46, and the transmission rotating body 48 may include at least one pulley and a chain instead of gears.

[0154] The number of teeth of the first transmission gear 48A may be the same as the number of teeth of the second transmission gear 48B, or it may be more than the number of teeth of the second transmission gear 48B.

[0155] As used herein, the expression "at least one" means "one or more" of the desired options. For example, as used herein, the expression "at least one" means "only one option" or "both of the two options" if there are two options. As another example, as used herein, the expression "at least one" means "only one option" or "a combination of two or more any options" if there are three or more options. For example, the expression "at least one of A and B" means (1) A only, and (2) B only, and (3) both A and B. For example, the expression "at least one of A, B, and C" means (1) A only, and (2) B only, (3) C only, (4) both A and B, (5) both B and C, (6) both A and C, and (7) all of A, B, and C. In other words, the expression “at least one of A and B” as used herein does not mean “at least one A and at least one B.”

[0156] The ordinal numbers such as "1st" and "2nd" used in this specification are used simply to distinguish identical names and do not have any special meaning. [Explanation of Symbols]

[0157] 20...Component, 22...Housing, 24...Internal space, 26...Input shaft, 26A...Crankshaft, 32...Speed ​​ratio changing section, 34...Speed ​​change section, 36...Output section, 44...Input rotating body, 44B...Input gear, 46...Output rotating body, 46A...Output gear, 48...Transmission rotating body, 48A...First transmission gear, 48B...Second transmission gear, 60...Speed ​​change input section, 60A...Connecting section, 62...Speed ​​change output section, 66...Planetary gear mechanism, 68...First change Speed ​​section, 68A...First speed input section, 68B...First speed output section, 70...Second speed section, 70A...Second speed input section, 70B...Second speed output section, 74...First planetary gear unit, 76...First planetary gear, 78...First sun gear, 80...First ring gear, 82...First carrier, 86...Second planetary gear unit, 88...Second planetary gear, 90...Second sun gear, 92...Second ring gear, 94...Second carrier, 130...Speed ​​control section.

Claims

1. A component for a human-powered vehicle, An input shaft to which human power is input and which has an input central axis, A rotation ratio changing unit to which the rotational force of the input shaft is transmitted, The transmission unit comprises a transmission input unit to which rotational force is input from the rotation ratio changing unit, a transmission output unit to which the rotational force input to the transmission input unit is output to the outside, and a transmission center axis different from the input center axis, and is configured to change the transmission ratio, which is the ratio of the rotational speed of the transmission output unit to the rotational speed of the transmission input unit. The rotation ratio changing unit is An input rotating body connected to the input shaft and rotating around the input central axis, An output rotating body connected to the aforementioned gear shifting unit and rotating around the gear shifting center axis, It includes a transmission rotating body that transmits the rotational force of the input rotating body to the output rotating body, The system is configured to change the ratio of the rotational speed of the output rotating body to the rotational speed of the input rotating body, The transmission rotating body is a component that rotates around a transmission axis that is different from both the input axis and the gear shift axis.

2. The component according to claim 1, wherein the final change ratio, which is the ratio of the rotational speed of the output rotating body to the rotational speed of the input rotating body, is greater than 1.

0.

3. The component according to claim 2, wherein the final change ratio is greater than 6.

0.

4. The component according to claim 1, wherein the first change ratio, which is the ratio of the rotational speed of the transmission rotating body to the rotational speed of the input rotating body, is greater than 1.

0.

5. The component according to claim 1, wherein the second change ratio, which is the ratio of the rotational speed of the output rotating body to the rotational speed of the transmission rotating body, is greater than 1.

0.

6. The second change ratio, which is the ratio of the rotational speed of the output rotating body to the rotational speed of the transmission rotating body, is greater than 1.

0. The component according to claim 4, wherein the first change ratio is greater than the second change ratio.

7. The input rotating body includes an input gear, The output rotating body includes an output gear, The component according to claim 1, wherein the transmission rotating body includes a first transmission gear that meshes with the input gear and a second transmission gear that meshes with the output gear.

8. The component according to claim 7, wherein the first transmission gear is formed integrally with the second transmission gear.

9. The component according to claim 7, wherein the number of teeth of the first transmission gear is different from the number of teeth of the second transmission gear.

10. The component according to claim 1, wherein the input rotating body is arranged such that it does not overlap the output rotating body when viewed from the input axis direction with respect to the input central axis.

11. When the input rotating body rotates either clockwise or counterclockwise when viewed from the input axis direction with respect to the input central axis, The component according to claim 1, wherein the output rotating body is configured to rotate in one direction when viewed from the input axis direction.

12. The component according to claim 1, wherein the gear shifting unit has at least one planetary gear mechanism.

13. The aforementioned gear shifting unit is A first gear shift unit having a first gear shift input unit to which rotational force is transmitted from the gear shift input unit, and a first gear shift output unit to which rotational force is transmitted from the first gear shift input unit, The second transmission unit further includes a second transmission input unit to which rotational force is transmitted from the first transmission output unit, and a second transmission output unit to which rotational force is transmitted from the second transmission input unit, The first gear shift unit is configured to allow selection of the ratio of the rotational speed of the first gear shift output unit to the rotational speed of the first gear shift input unit from a plurality of first gear ratios. The component according to claim 1, wherein the second speed shift unit is configured to allow selection of the ratio of the rotational speed of the second speed shift output unit to the rotational speed of the second speed shift input unit from a plurality of second speed ratios.

14. The first gear shift unit has a first planetary gear unit, The first planetary gear unit is, The first planetary gear and, The first carrier supporting the first planetary gear, The first solar gear meshes with the first planetary gear, The first ring gear meshes with the first planetary gear, By controlling the rotational state of one of the first sun gear, the first carrier, and the first ring gear, one of the plurality of first gear ratios is selected. The second gearbox has a second planetary gear unit, The second planetary gear unit is, The second planetary gear, The second carrier supporting the aforementioned second planetary gear, The second solar gear meshes with the second planetary gear, The present invention includes a second ring gear that meshes with the second planetary gear, The component according to claim 13, wherein one of the plurality of second gear ratios is selected by controlling the rotational state of one of the second sun gear, the second carrier, and the second ring gear.

15. The system further includes a gear shift control unit that controls the gear shifting unit, The component according to claim 14, wherein the gear shift control unit is configured to control the rotational state of the first ring gear and the rotational state of the second ring gear.

16. The component according to claim 14, wherein the output rotating body is configured to be connected to the first carrier via a connecting portion that connects the output rotating body and the first carrier.

17. The component according to claim 1, wherein the input shaft is the crankshaft of the human-powered vehicle.

18. The system further comprises an output unit that outputs the rotational force of the aforementioned gear shift output unit, The component according to claim 1, wherein the output unit has an output central axis different from the input central axis.

19. The component according to claim 18, wherein the output center axis is configured to be concentric with the gear shift center axis.

20. Further housing that defines the interior space, The component according to claim 1, wherein the rotation ratio changing unit and the speed changing unit are arranged in the internal space.

Images