JP2021084608A - Drive unit for man-power drive vehicle - Google Patents

Abstract

To provide a drive unit for a man-power drive vehicle in which a claw member is capable of suitably transmitting a driving force.SOLUTION: A drive unit for a man-power drive vehicle includes a switching mechanism for switching a transmission state of a driving force of the man-power drive vehicle. The switching mechanism includes: a first rotor; a second rotor; and a claw member which is attached to the first rotor and is moved between a first position where the first rotor and the second rotor are integrally rotated by engagement with the second rotor, and a second position to permit a relative rotation between the first rotor and the second rotor. The claw member includes a first part extended so as to intersect with a circumferential direction of the first rotor, a second part extended so as to intersect with the circumferential direction, a first connection part to establish connection between the first part and the second part, and a second connection part to establish connection between the first part and the second part at a position away from the first connection part.SELECTED DRAWING: Figure 7

Description

The present invention relates to a drive unit for a human-powered vehicle.

For example, Patent Document 1 discloses a drive unit for a human-powered vehicle. The drive unit for a human-powered vehicle according to Patent Document 1 includes a switching mechanism for switching a transmission state of the driving force. The switching mechanism is attached to the first rotating body, the second rotating body, and the first rotating body, and the first rotating body and the second rotating body are integrally rotated by engaging with the second rotating body. A claw member that moves between a position and a second position that allows relative rotation with the second rotating body is provided.

U.S. Patent Application Publication No. 2007/0254768

One of the objects of the present invention is to provide a drive unit for a human-powered vehicle in which a claw member can suitably transmit a driving force.

The drive unit according to the first aspect of the present invention is a drive unit for a human-powered vehicle, and includes a switching mechanism for switching a transmission state of the driving force of the human-powered vehicle. The switching mechanism includes a first rotating body and a second rotating body. A first position attached to the body, the first rotating body, and engaging with the second rotating body to integrally rotate the first rotating body and the second rotating body, and the first rotating body. A first portion comprising a claw member that moves between a second position that allows relative rotation with the second rotating body, and the claw member extending so as to intersect the circumferential direction of the first rotating body. A second portion extending so as to intersect the circumferential direction, a first connecting portion connecting the first portion and the second portion, and the first portion at a position away from the first connecting portion. A second connection portion for connecting the second portion is provided.
According to the drive unit on the first side surface, since the first part and the second part are connected by the first connection part and the second connection part, the first part and the second part are connected only by the first connection part. Compared to the case where the claw member is used, the driving force can be suitably transmitted.

In the drive unit on the second side surface according to the first side surface, the switching mechanism further includes a third rotating body, and the first portion includes a first base portion attached to the first rotating body and the second rotating body. The second portion includes a first engaging portion that engages with the first rotating body, and the second portion brings the claw member into contact with the second base portion attached to the first rotating body and the third rotating body. It is provided with a contact portion for moving to two positions.
According to the drive unit on the second side surface, the rigidity of the claw member having the first engaging portion in the first portion and the contact portion in the second portion can be increased.

In the drive unit on the third side surface according to the second side surface, the first connection portion connects the first base portion and the second base portion.
According to the drive unit on the third side surface, the claw member is suitably attached to the first rotating body by the first connecting portion connecting the first base portion and the second base portion.

In the drive unit on the fourth side surface according to the second or third side surface, the second connecting portion connects the first engaging portion and the contact portion.
According to the drive unit on the fourth side surface, the rigidity of the highly loaded portion of the claw member can be increased by the second connecting portion connecting the first engaging portion and the contact portion.

In the drive unit on the fifth side surface according to the fourth side surface, the second connecting portion connects the first engaging portion and the contact portion so as to be flush with each other in a direction parallel to the axial direction.
According to the drive unit on the fifth side surface, the claw member can be easily manufactured.

In the drive unit of the sixth side surface according to any one of the first to fifth sides, the first part, the second part, the first connection part, and the second connection part are integrally formed. ..
According to the drive unit on the sixth side surface, the rigidity of the claw member can be increased by integrally forming the first portion, the second portion, the first connecting portion, and the second connecting portion.

In the drive unit on the seventh side surface according to any one of the first to sixth side surfaces, the first dimension of the first portion in the direction parallel to the axial direction of the first rotating body and the first rotating body. The second dimension of the second portion in the direction parallel to the axial direction is longer than the distance from the first portion to the second portion in the direction parallel to the axial direction of the first rotating body.
According to the drive unit on the seventh side surface, since the first dimension and the second dimension are longer than the distance from the first portion to the second portion in the direction parallel to the axial direction of the first rotating body, the rigidity of the claw member is increased. Can be enhanced.

In the drive unit on the eighth side surface according to the seventh side surface, the first dimension is different from the second dimension.
According to the drive unit on the eighth side surface, the first portion and the second portion can be made into suitable dimensions for each.

In the drive unit on the ninth side surface according to any one of the first to eighth side surfaces, the switching mechanism further includes a first support member for supporting the claw member, and the claw member includes the first portion and the claw member. A first support member arranging portion, which is located between the second portion and where the support member is arranged, is further provided.
According to the drive unit on the ninth side surface, the claw member is suitably supported by arranging the first support member in the first support member arranging portion.

The drive unit according to the tenth aspect of the present invention is a drive unit for a human-powered vehicle, and includes a switching mechanism for switching a transmission state of the driving force of the human-powered vehicle. The switching mechanism includes a first rotating body and a second rotating body. The body, the first position attached to the first rotating body and engaging with the second rotating body to integrally rotate the first rotating body and the second rotating body, and the first rotating body. A claw member that moves between a second position that allows relative rotation with the second rotating body and a first supporting member that supports the claw member are provided, and the claw member is the first rotating body. A base portion attached to, an engaging portion that engages with the second rotating body, and a first supporting member arranging portion that extends from the base portion toward the engaging portion and on which the first supporting member is arranged. In the first support member arranging portion, the side close to the first rotating body is closed in the base portion, the side close to the first rotating body is opened in the engaging portion, and the second rotation is provided. The side closer to the body is closed.
According to the drive unit on the tenth side surface, the side close to the second rotating body is closed at the engaging portion of the first support member arranging portion, so that the engaging portion of the first supporting member arranging portion is close to the second rotating body. The claw member can suitably transmit the driving force as compared with the case where the side is opened.

In the drive unit on the eleventh side surface according to the tenth side surface, the side of the base portion of the first support member arrangement portion close to the first rotating body is closed and the side close to the second rotating body is opened.
According to the drive unit on the eleventh side surface, since the first support member can be arranged from the open side of the first support member arrangement portion in the base portion, the first support member can be easily arranged.

In the drive unit on the twelfth side surface according to any one of the ninth to eleventh side surfaces, the first support member is a coil spring.
According to the drive unit on the twelfth side surface, the claw member is preferably supported by the coil spring.

In the drive unit on the thirteenth side surface according to the twelfth side surface, the claw member includes a first claw member and a second claw member, and the first support member is a first support member arranging portion of the first claw member. And, it is arranged in the first support member arrangement part of the 2nd claw member.
According to the drive unit on the thirteenth side surface, the first claw member and the second claw member can be supported by a common first support member.

The drive unit on the 14th side surface according to the 13th side surface further includes a second support member for supporting the claw member, and the first claw member and the second claw member are the first support member and the second support. The members are attached to the first rotating body by engaging with each other.
According to the drive unit on the 14th side surface, the claw member can be attached to the first rotating body by engaging the first support member and the second support member with each other.

In the drive unit on the fifteenth side surface according to the fourteenth side surface, the claw member further includes a second support member arranging portion in which the second support member is arranged in a portion different from the first support member arranging portion.
According to the drive unit on the fifteenth side surface, the claw member can be supported by the first support member and the second support member.

The drive unit on the 16th side surface according to any one of the 1st to 15th side surfaces further includes a first planetary gear mechanism and a second planetary gear mechanism to which the rotation of the first planetary gear mechanism is input. The first planetary gear mechanism includes the first rotating body, and the second planetary gear mechanism includes the second rotating body.
According to the drive unit on the 16th side surface, the transmission of the driving force between the first rotating body included in the first planetary gear mechanism and the second rotating body included in the second planetary gear mechanism can be switched by the switching mechanism.

In the drive unit on the 17th side surface according to any one of the 1st to 16th side surfaces, the rotation of the crank of the human-powered vehicle is transmitted to the first rotating body, and the crank advances the human-powered vehicle. When rotating in the first direction, the claw member is configured to be located in a second position, and when the crank rotates in a second direction opposite to the first direction, the claw member is second. It is configured to be located at one position.
According to the drive unit on the 17th side surface, when the crank rotates in the second direction, the driving force can be transmitted between the first rotating body and the second rotating body.

The drive unit on the 18th side according to any one of the 1st to 17th sides constitutes the hub of the human-powered vehicle.
According to the drive unit on the 18th side surface, the transmission of the driving force can be switched in the hub of the human-powered vehicle.

In the drive unit for a human-powered vehicle of the present disclosure, the claw member can suitably transmit the driving force.

A side view of a human-powered vehicle including a drive unit for the human-powered vehicle of the embodiment. The front view of the drive unit for the man-powered vehicle of FIG. FIG. 2 is a cross-sectional view taken along the line D3-D3 of FIG. The front view of the first rotating body, the claw member, and the first support member of FIG. The end view along the D5-D5 line of FIG. The end view along the line D6-D6 of FIG. FIG. 4 is a perspective view of the claw member of FIG. FIG. 4 is a side view of the claw member of FIG. The plan view of the claw member of FIG. The bottom view of the claw member of FIG. FIG. 3 is a schematic view of a state in which the first rotating body of the switching mechanism of FIG. 3 is rotating in the third direction. 1 is a schematic view of a state in which the first rotating body of the switching mechanism of FIG. 3 is rotating in the fourth direction. 2 is a second schematic view of a state in which the first rotating body of the switching mechanism of FIG. 3 is rotating in the fourth direction. The end view which shows the 1st solar gear and the resistance imparting member of FIG. FIG. 3 is a perspective view showing a second step of attaching the claw member of FIG. 3 to the first rotating body. FIG. 3 is a perspective view showing a third step of attaching the claw member of FIG. 3 to the first rotating body. FIG. 3 is a perspective view showing a fourth step of attaching the claw member of FIG. 3 to the first rotating body. FIG. 5 is a perspective view showing a fifth step of attaching the claw member of FIG. 3 to the first rotating body. A perspective view of a state seen from the side opposite to FIG.

<Embodiment>
The drive unit 40 for a human-powered vehicle according to the embodiment will be described with reference to FIGS. 1 to 19. The human-powered vehicle 10 is a vehicle having at least one wheel and can be driven by at least human-powered driving force. The human-powered vehicle 10 includes various types of bicycles such as mountain bikes, road bikes, city bikes, cargo bikes, and hand bikes and recumbent bikes. The number of wheels of the human-powered vehicle 10 is not limited. The human-powered vehicle 10 also includes, for example, a one-wheeled vehicle and a vehicle having three or more wheels. The human-powered vehicle 10 is not limited to a vehicle that can be driven only by human-powered driving force. The human-powered vehicle 10 includes an e-bike that uses not only the human-powered driving force but also the driving force of the electric motor for propulsion. E-bikes include electrically power assisted bicycles that are assisted by electric motors. Hereinafter, in the embodiment, the human-powered vehicle 10 will be described as a bicycle.

The human-powered vehicle 10 includes a crank 12 to which a human-powered driving force is input. The human-powered vehicle 10 further includes wheels 14 and a vehicle body 16. The wheel 14 includes a rear wheel 14A and a front wheel 14B. The vehicle body 16 includes a frame 18. The crank 12 includes a crankshaft 12A that is rotatable with respect to the frame 18 and a pair of crankarms 12B that are provided at the axial ends of the crankshaft 12A, respectively. A pair of pedals 20 are connected to each crank arm 12B. The rear wheel 14A is driven by the rotation of the crank 12. The rear wheel 14A is supported by the frame 18. The crank 12 and the rear wheel 14A are connected by a drive mechanism 22. The drive mechanism 22 includes a front rotating body 24 connected to the crankshaft 12A. The front rotating body 24 includes a sprocket, a pulley, or a bevel gear. The drive mechanism 22 further includes a rear rotating body 26 and a connecting member 28. The connecting member 28 transmits the rotational force of the front rotating body 24 to the rear rotating body 26. The connecting member 28 includes, for example, a chain, a belt, or a shaft. The rear rotating body 26 is connected to the rear wheel 14A. The rear rotating body 26 includes a sprocket, a pulley, or a bevel gear.

A front wheel 14B is attached to the frame 18 via a front fork 30. A handlebar 34 is connected to the front fork 30 via a stem 32. In the present embodiment, the rear wheel 14A is connected to the crank 12 by the drive mechanism 22, but at least one of the rear wheel 14A and the front wheel 14B may be connected to the crank 12 by the drive mechanism 22.

Preferably, the drive unit 40 constitutes the hub of the human-powered vehicle 10. Preferably, the drive unit 40 constitutes the hub 14C of the rear wheels 14A. Preferably, the drive unit 40 is an internal transmission that changes the gear ratio of the human-powered vehicle 10. The gear ratio of the human-powered vehicle 10 is the ratio of the rotation speed of the rear wheels 14A to the rotation speed of the crank 12. The rotation of the rear rotating body 26 is input to the drive unit 40. The drive unit 40 shifts the rotation input from the rear rotating body 26 and transmits it to the rear wheels 14A.

The drive unit 40 includes a switching mechanism 42 for switching the transmission state of the driving force of the human-powered vehicle 10. When the crank 12 rotates in the first direction R1 in which the human-powered vehicle 10 advances, the switching mechanism 42 does not transmit the driving force by the switching mechanism 42. The switching mechanism 42 transmits the driving force by the switching mechanism 42 when the crank 12 rotates in the second direction R2 in the direction opposite to the first direction R1.

The drive unit 40 further includes a first planetary gear mechanism 44 and a second planetary gear mechanism 46 to which the rotation of the first planetary gear mechanism 44 is input. The rotation of the rear rotating body 26 is transmitted to the first planetary gear mechanism 44. The rotation of the first planetary gear mechanism 44 is transmitted to the second planetary gear mechanism 46. The drive unit 40 further includes a shaft member 40A. The shaft member 40A is supported by the frame 18 of the human-powered vehicle 10. The first planetary gear mechanism 44 and the second planetary gear mechanism 46 are provided on the shaft member 40A.

The first planetary gear mechanism 44 includes a first sun gear 48, a first planetary gear 50, a first carrier 52, and a first ring gear 54. The number and configuration of the first sun gear 48, the first planetary gear 50, the first carrier 52, and the first ring gear 54 are changed according to the number of gears required for the drive unit 40. The first solar gear 48 is provided around the shaft member 40A. In the present embodiment, the first solar gear 48 includes a first solar gear 48A and a first solar gear 48B. The number of teeth of the first solar gear 48A is smaller than the number of teeth of the first solar gear 48B. The first planetary gear 50 includes a first planetary gear 50A and a first planetary gear 50B. The number of teeth of the first planetary gear 50A is larger than the number of teeth of the first planetary gear 50B. The first planetary gear 50A meshes with the first sun gear 48A, and the first planetary gear 50B meshes with the first sun gear 48B. The first planetary gear 50A and the first planetary gear 50B constitute a stepped first planetary gear unit 56. The plurality of first planetary gear units 56 are arranged around the first sun gear 48. The first carrier 52 supports a plurality of first planetary gear units 56. The first carrier 52 revolves a plurality of first planetary gear units 56 integrally with respect to the first sun gear 48. The first ring gear 54 is arranged around the plurality of first planetary gear units 56 so as to mesh with one of the first planetary gear 50A and the first planetary gear 50B.

The second planetary gear mechanism 46 includes a second sun gear 58, a second planetary gear 60, a second carrier 62, and a second ring gear 64. The number and configuration of the second sun gear 58, the second planetary gear 60, the second carrier 62, and the second ring gear 64 are changed according to the number of gears required for the drive unit 40. The second sun gear 58 is provided around the shaft member 40A. In the present embodiment, the second sun gear 58 includes a second sun gear 58A and a second sun gear 58B. The second sun gear 58A is provided at a position farther from the first planetary gear mechanism 44 than the second sun gear 58B in the axial direction of the shaft member 40A. The number of teeth of the second sun gear 58A is smaller than the number of teeth of the second sun gear 58B. The second planetary gear 60 includes a second planetary gear 60A and a second planetary gear 60B. The number of teeth of the second planetary gear 60A is larger than the number of teeth of the second planetary gear 60B. The second planetary gear 60A meshes with the second sun gear 58A, and the second planetary gear 60B meshes with the second sun gear 58B. The second planetary gear 60A and the second planetary gear 60B constitute a stepped second planetary gear unit 66. The plurality of second planetary gear units 66 are arranged around the second sun gear 58. The second carrier 62 supports a plurality of second planetary gear units 66. The second carrier 62 revolves a plurality of second planetary gear units 66 integrally with respect to the second sun gear 58. The second ring gear 64 is arranged around the plurality of second planetary gear units 66 so as to mesh with one of the second planetary gear 60A and the second planetary gear 60B.

The drive unit 40 further includes an input unit 68 that connects the rear rotating body 26 and the first planetary gear mechanism 44. The rear rotating body 26 is attached to the first end portion 68A of the input portion 68 so as to rotate integrally with the input portion 68. The second end portion 68B of the input portion 68 is attached to the first end portion 52A of the first carrier 52, and transmits the rotation of the rear rotating body 26 to the first carrier 52.

The drive unit 40 further includes an output unit 70. The output unit 70 constitutes a hub shell. The output unit 70 includes a spoke connection unit 70A connected to the spokes of the rear wheel 14A.

The drive unit 40 further includes a control mechanism 72 that changes the number of gears. The control mechanism 72 changes the rotational state of the first solar gear 48 and the second solar gear 58. In the present embodiment, the control mechanism 72 regulates the rotation states of the first sun gear 48A, the first sun gear 48B, the second sun gear 58A, and the second sun gear 58B with respect to the shaft member 40A, respectively. It switches between a regulated state and a permissible state in which rotation with respect to the shaft member 40A is permitted.

The control mechanism 72 includes a sleeve 72A and a regulation claw 72B. The sleeve 72A is rotatably attached to the shaft member 40A with respect to the shaft member 40A. The regulation claw 72B is provided corresponding to each of the first solar gear 48A, the first solar gear 48B, the second solar gear 58A, and the second solar gear 58B. Each regulation claw 72B is provided between the corresponding first sun gear 48A, first sun gear 48B, second sun gear 58A, and second sun gear 58B, and the shaft member 40A. For example, the rotation phase of the sleeve 72A with respect to the shaft member 40A is changed by operating the external operation unit of the drive unit 40. The sleeve 72A engages the regulating claw 72B with recesses provided on the inner circumferences of the first sun gear 48A, the first sun gear 48B, the second sun gear 58A, and the second sun gear 58B to which the regulating claw 72B corresponds. As a result, the rotational states of the first solar gear 48A, the first solar gear 48B, the second solar gear 58A, and the second solar gear 58B change from the allowable state to the regulated state.

The first ring gear 54 of the first planetary gear mechanism 44 is attached to the first end portion 62A of the second carrier 62 of the second planetary gear mechanism 46. The first ring gear 54 and the second carrier 62 are integrally rotatably attached to each other.

The control mechanism 72 further includes a first one-way clutch 74. The first one-way clutch 74 is arranged between the outer peripheral portion of the second end portion 52B of the first carrier 52 and the inner peripheral portion of the first end portion 62A of the second carrier 62. The first one-way clutch 74 is provided at a position facing the inner peripheral portion of the drive claw 74A and the first end portion 62A of the second carrier 62. When the rotation speed of the first carrier 52 in the rotation direction corresponding to the first direction R1 of the crank 12 is equal to or higher than the rotation speed of the second carrier 62, the first one-way clutch 74 rotates the first carrier 52 with the second carrier 62. Communicate to. The first one-way clutch 74 does not transmit the rotation of the second carrier 62 to the first carrier 52 when the rotation speed of the second carrier 62 in the rotation direction corresponding to the first direction R1 of the crank 12 exceeds the first carrier 52. .. In the first one-way clutch 74, when the rotation speed of the first carrier 52 in the rotation direction corresponding to the first direction R1 of the crank 12 is equal to or higher than the rotation speed of the second carrier 62, the drive claw 74A is the inner circumference of the second carrier 62. Engage with the part.

The control mechanism 72 further includes a second one-way clutch 76. The second one-way clutch 76 is provided between the second ring gear 64 and the output unit 70. When the rotation speed of the second ring gear 64 in the rotation direction corresponding to the first direction R1 of the crank 12 is equal to or higher than the rotation speed of the output unit 70, the second one-way clutch 76 causes the rotation of the second ring gear 64 to be rotated by the output unit 70. Communicate to. When the rotation speed of the output unit 70 in the rotation direction corresponding to the first direction R1 of the crank 12 exceeds the rotation speed of the second ring gear 64, the second one-way clutch 76 causes the rotation of the output unit 70 to rotate in the second ring gear 64. Do not communicate to. The second one-way clutch 76 may be a roller clutch or a claw clutch.

The control mechanism 72 further includes a third one-way clutch 78. The third one-way clutch 78 is provided between the second end portion 62B of the second carrier 62 and the output portion 70. When the rotation speed of the second carrier 62 in the rotation direction corresponding to the first direction R1 of the crank 12 is equal to or higher than the rotation speed of the output unit 70, the third one-way clutch 78 transmits the rotation of the second carrier 62 to the output unit 70. To do. The third one-way clutch 78 transmits the rotation of the output unit 70 to the second carrier 62 when the rotation speed of the output unit 70 in the rotation direction corresponding to the first direction R1 of the crank 12 exceeds the rotation speed of the second carrier 62. do not. The third one-way clutch 78 may be a roller clutch or a claw type clutch.

Table 1 shows the rotational states of the first sun gear 48A, the first sun gear 48B, the second sun gear 58A, and the second sun gear 58B in each shift stage.

In the first shift stage, the rotation of the rear rotating body 26 is not changed and is transmitted to the output unit 70 via the first planetary gear mechanism 44, the first one-way clutch 74, the second ring gear, and the second one-way clutch 76. Be transmitted.

In the second gear, the rotation of the rear rotating body 26 is accelerated by the first sun gear 48A in the first planetary gear mechanism 44, and the first ring gear 54, the second carrier 62, the second ring gear 64, and , Is transmitted to the output unit 70 via the second one-way clutch 76. The gear ratio in the second gear is larger than the gear ratio in the first gear.

In the third gear, the rotation of the rear rotating body 26 is accelerated by the first sun gear 48B in the first planetary gear mechanism 44, and the first ring gear 54, the second carrier 62, the second ring gear 64, and , Is transmitted to the output unit 70 via the second one-way clutch 76. The gear ratio in the third gear is larger than the gear ratio in the second gear.

In the fourth gear, the rotation of the rear rotating body 26 is accelerated by the first sun gear 48B in the first planetary gear mechanism 44, and the second carrier of the second planetary gear mechanism 46 is accelerated via the first ring gear 54. It is transmitted to 62. The rotation input to the second planetary gear mechanism 46 is accelerated by the second sun gear 58A in the second planetary gear mechanism 46 and transmitted to the output unit 70 via the third one-way clutch 78. The gear ratio in the fourth gear is larger than the gear ratio in the third gear.

In the fifth gear, the rotation of the rear rotating body 26 is accelerated by the first sun gear 48B in the first planetary gear mechanism 44, and the second carrier of the second planetary gear mechanism 46 is accelerated via the first ring gear 54. It is transmitted to 62. The rotation input to the second planetary gear mechanism 46 is accelerated by the second sun gear 58B in the second planetary gear mechanism 46 and transmitted to the output unit 70 via the second carrier 62 and the third one-way clutch 78. .. The gear ratio in the fifth gear is larger than the gear ratio in the fourth gear.

The drive unit 40 further includes a brake mechanism 80. The brake mechanism 80 brakes the rotation of the output unit 70 with respect to the shaft member 40A. The brake mechanism 80 constitutes a coaster brake. The brake mechanism 80 includes a switching mechanism 42 and a braking unit 82.

The braking portion 82 is provided between the second end portion 62B of the second carrier 62 and the output portion 70. The braking portion 82 includes a friction portion 82A. When the crank 12 rotates in the second direction R2, the friction portion 82A engages with the output portion 70 and applies a frictional force to the output portion 70. The braking unit 82 is, for example, a roller brake.

The switching mechanism 42 is provided between the first planetary gear mechanism 44 and the second planetary gear mechanism 46. When the crank 12 rotates in the second direction R2, the switching mechanism 42 transmits the rotation input to the first planetary gear mechanism 44 to the second planetary gear mechanism 46. The rotation transmitted to the second planetary gear mechanism 46 is transmitted to the braking unit 82. When the crank 12 rotates in the second direction R2, the first one-way clutch 74 does not transmit the rotation of the first carrier 52 to the second carrier 62. When the crank 12 rotates in the second direction R2, the second one-way clutch 76 does not transmit the rotation of the second ring gear 64 to the output unit 70. When the crank 12 rotates in the second direction R2, the third one-way clutch 78 does not transmit the rotation of the second carrier 62 to the output unit 70.

As shown in FIGS. 4 to 6, the switching mechanism 42 includes a first rotating body 84, a second rotating body 86, and a claw member 88. The first planetary gear mechanism 44 includes a first rotating body 84, and the second planetary gear mechanism 46 includes a second rotating body 86. The rotation of the crank 12 of the human-powered vehicle 10 is transmitted to the first rotating body 84. The first rotating body 84 is formed integrally with the first carrier 52. The second rotating body 86 is formed integrally with the second carrier 62. The switching mechanism 42 further includes a third rotating body 90. The third rotating body 90 is formed integrally with the first ring gear 54.

The claw member 88 is attached to the first rotating body 84, and has a first position for integrally rotating the first rotating body 84 and the second rotating body 86 by engaging with the second rotating body 86, and a first rotating body. It moves between 84 and a second position that allows relative rotation of the second rotating body 86. When the crank 12 rotates in the first direction R1 in which the human-powered vehicle 10 advances, the claw member 88 is configured to be located at the second position. When the crank 12 rotates in the second direction R2 in the direction opposite to the first direction R1, the claw member 88 is configured to be located in the first position.

The switching mechanism 42 further includes a first support member 92 that supports the claw member 88. The first support member 92 is a coil spring. The claw member 88 is attached to the outer peripheral portion of the first rotating body 84. Specifically, in a state where the claw member 88 is arranged in the recess 84A on the outer peripheral portion of the first rotating body 84, the first supporting member 92 attaches the claw member 88 to the first rotating body 84 from the radial outside of the claw member 88. The claw member 88 is attached to the first rotating body 84 by pressing it against the outer peripheral portion. The first support member 92 applies a force to the claw member 88 in the direction from the second position to the first position. In the present embodiment, the claw member 88 includes a first claw member 88A and a second claw member 88B. In the present embodiment, as shown in FIG. 15, the first claw member 88A and the second claw member 88B are arranged at positions different from each other by 180 degrees in the circumferential direction of the first rotating body 84.

The structure of the claw member 88 will be described with reference to FIGS. 5 to 10.
The claw member 88 includes a base portion 94 and an engaging portion 96. The claw member 88 further includes a first support member arranging portion 98. The base portion 94 is attached to the first rotating body 84. The engaging portion 96 engages with the second rotating body 86. The first support member arranging portion 98 extends from the base portion 94 toward the engaging portion 96. The first support member 92 is arranged in the first support member arrangement portion 98. The base portion 94 is housed inside a recess 84A provided on the outer peripheral portion of the first rotating body 84. When the claw member 88 is located at the first position, the engaging portion 96 is located at the recess 86B provided in the inner peripheral portion of the second rotating body 86.

The claw member 88 includes a first portion 100, a second portion 102, a first connection portion 104, and a second connection portion 106. The first portion 100 extends so as to intersect the circumferential direction of the first rotating body 84. The second portion 102 extends so as to intersect the circumferential direction. The first connection portion 104 connects the first portion 100 and the second portion 102. The second connection portion 106 connects the first portion 100 and the second portion 102 at a position away from the first connection portion 104. Preferably, the first portion 100, the second portion 102, the first connection portion 104, and the second connection portion 106 are integrally formed.

The first portion 100 includes a first base portion 108 attached to the first rotating body 84 and a first engaging portion 110 that engages with the second rotating body 86. The second portion 102 includes a second base portion 112 attached to the first rotating body 84, and a contact portion 114 that moves the claw member 88 to the second position by contacting with the third rotating body 90.

The first support member arranging portion 98 is located between the first portion 100 and the second portion 102. The first support member arranging portion 98 includes a first connecting portion 104 and a second connecting portion 106. The side of the base portion 94 of the first support member arranging portion 98 close to the first rotating body 84 is closed. In the engaging portion 96, the side of the first support member arranging portion 98 close to the first rotating body 84 is opened, and the side close to the second rotating body 86 is closed. The side of the base portion 94 of the first support member arranging portion 98 close to the first rotating body 84 is closed, and the side close to the second rotating body 86 is opened. A hole 98A into which the first support member 92 is inserted is formed in the first support member arranging portion 98. The first connection portion 104 connects the first base portion 108 and the second base portion 112. The side of the base portion 94 of the first support member arranging portion 98 close to the first rotating body 84 is closed by the first connecting portion 104. The second connecting portion 106 connects the first engaging portion 110 and the contact portion 114. The side of the engaging portion 96 of the first support member arranging portion 98 close to the second rotating body 86 is closed by the second connecting portion 106. The first base portion 108, the second base portion 112, and the first connection portion 104 form the base portion 94. The first engaging portion 110 and the contact portion 114 form an engaging portion 96.

Preferably, the first dimension L1 of the first portion 100 in the direction parallel to the axial direction of the first rotating body 84 and the second dimension L2 of the second portion 102 in the direction parallel to the axial direction of the first rotating body 84. Is longer than the distance L3 from the first portion 100 to the second portion 102 in the direction parallel to the axial direction of the first rotating body 84. Preferably, the first dimension L1 is different from the second dimension L2. The first dimension L1, the second dimension L2, and the distance L3 can be changed as appropriate. At least one of the first dimension L1 and the second dimension L2 may have a distance L3 or less. The first dimension L1 and the second dimension L2 may be the same.

Preferably, the contact portion 114 of the second portion 102 is formed with a convex portion 114A at an end opposite to the first portion 100. When viewed from a direction parallel to the axial direction of the first rotating body 84, the shape of the convex portion 114A substantially matches the shape of the second connecting portion 106. Preferably, the dimension L22 of the engaging portion 96 in the direction parallel to the axial direction of the first rotating body 84 is larger than the dimension L21 of the base portion 94. The convex portion 114A increases the second dimension L2 of the second portion 102 by the dimension L22 of the engaging portion 96. The convex portion 114A suppresses an excessive increase in the weight of the claw member 88 while increasing the area in which the contact portion 114 contacts the third rotating body 90.

Preferably, the maximum thickness H1 of the first connecting portion 104 when the claw member 88 is viewed from a direction parallel to the axial direction of the first rotating body 84 is such that the claw member 88 is parallel to the axial direction of the first rotating body 84. It is less than half of the maximum thickness HA of the base portion 94 when viewed from the above direction. Preferably, the maximum thickness H2 of the second connecting portion 106 when the claw member 88 is viewed from a direction parallel to the axial direction of the first rotating body 84 is such that the claw member 88 is parallel to the axial direction of the first rotating body 84. It is less than half of the maximum thickness HB of the engaging portion 96 when viewed from any direction.

The second connecting portion 106 connects the first engaging portion 110 and the contact portion 114 so as to be flush with each other in a direction parallel to the axial direction. In a state where the claw member 88 is arranged on the first rotating body 84, the end face 110A of the first engaging portion 110 farthest from the base portion 94 and the end face of the contact portion 114 farthest from the base portion 94. The 114B and the end face 106A of the second connecting portion 106, which is the farthest from the base portion 94, are arranged in a direction parallel to the axial direction of the first rotating body 84. The end face 106A of the second connecting portion 106 smoothly connects the end face 110A of the first engaging portion 110 and the end face 114B of the contact portion 114.

Preferably, when the claw member 88 is viewed from the radial outside of the first rotating body 84, the end surface 106B on the base portion 94 side of the second connecting portion 106 has an R shape in a portion continuous with the first portion 100. Have. Preferably, when the claw member 88 is viewed from the radial outside of the first rotating body 84, the end surface 106B on the base portion 94 side of the second connecting portion 106 has an R shape in a portion continuous with the second portion 102. Have.

Preferably, when the claw member 88 is viewed from the engaging portion 96 side, the end surface 106C on the first rotating body 84 side of the second connecting portion 106 has an R shape at a portion continuous with the first portion 100. Preferably, when the claw member 88 is viewed from the engaging portion 96 side, the end surface 106C on the first rotating body 84 side of the second connecting portion 106 has an R shape at a portion continuous with the second portion 102.

Preferably, the recess 102A is formed on the surface of the second portion 102 opposite to the first rotating body 84. When viewed from a direction parallel to the axial direction of the first rotating body 84, the recess 102A is formed from a portion corresponding to the end portion of the second connecting portion 106 on the base portion 94 side toward the base portion 94 side.

As shown in FIGS. 4 and 18, the first support member 92 is arranged in the first support member arranging portion 98 of the first claw member 88A and the first support member arranging portion 98 of the second claw member 88B. To. The drive unit 40 further includes a second support member 93 that supports the claw member 88. The claw member 88 further includes a second support member arranging portion 116 in which the second support member 93 is arranged in a portion different from the first support member arranging portion 98. The second support member arranging portion 116 is provided on the base portion 94 of the claw member 88. The second support member arranging portion 116 is provided on the side of the first base portion 108 opposite to the second portion 102.

The first claw member 88A and the second claw member 88B are attached to the first rotating body 84 by engaging the first support member 92 and the second support member 93 with each other. The first support member 92 includes an annular portion 92A, a first end portion 92B, and a second end portion 92C. The coil member is bent so that the first end portion 92B and the second end portion 92C extend in a direction parallel to the axial direction of the ring portion 92A. The second support member 93 includes an annular portion 93A, a first end portion 93B, and a second end portion 93C. The coil member is bent so that the first end portion 93B and the second end portion 93C extend in a direction parallel to the axial direction of the ring portion 93A. In a state where the claw member 88 is attached to the first rotating body 84, the first end portion 92B and the second end portion 92C of the first support member 92 and the first end portion 92B and the second end of the second support member 93 are attached. The portion 92C is arranged so as to extend in different directions from each other.

The first support member 92 and the second support member 93 support the drive claw 74A of the first one-way clutch 74 together with the first claw member 88A and the second claw member 88B. In the first support member 92 and the second support member 93, the drive claw 74A is attached to the first rotating body 84. The first claw member 88A, the second claw member 88B, and the two drive claws 74A are arranged side by side in the circumferential direction on the outer peripheral portion of the first rotating body 84. The second support member 93, together with the first support member 92, applies a force to the claw member 88 in the direction from the second position to the first position.

The operation of the switching mechanism 42 will be described with reference to FIGS. 11 and 12.
The second rotating body 86 and the third rotating body 90 are attached so as to be relatively rotatable within a predetermined angle range. The second rotating body 86 includes a plurality of convex portions 86A protruding outward in the radial direction of the outer peripheral portion. The third rotating body 90 includes a plurality of convex portions 90A protruding in the axial direction at the end portions in the axial direction. Each of the convex portions 90A of the third rotating body 90 is arranged between two adjacent convex portions 86A of the plurality of convex portions 86A of the second rotating body 86. Therefore, the convex portion 90A of the third rotating body 90 can move between two adjacent convex portions 86A among the plurality of convex portions 86A of the second rotating body 86.

The claw member 88 is arranged so that the first engaging portion 110 faces the inner peripheral portion of the second rotating body 86. A plurality of recesses 86B arranged in the circumferential direction are formed in a portion of the second rotating body 86 facing the first engaging portion 110. The claw member 88 is arranged so that the contact portion 114 faces the inner peripheral portion of the third rotating body 90. A plurality of recesses 90B arranged in the circumferential direction are formed in the portion of the third rotating body 90 facing the contact portion 114.

When the crank 12 rotates in the first direction R1 and in the first shift stage, the drive claw 74A of the first one-way clutch 74 engages with the second wall portion 86D of the recess 86B of the second rotating body 86. The first rotating body 84 and the second rotating body 86 are integrally rotated. In this case, the third rotating body 90 is rotated in the third direction R3 until the convex portion 86A of the second rotating body 86 comes into contact with the convex portion 90A of the third rotating body 90. In this case, the contact portion 114 of the claw member 88 and the wall portion of the concave 90B of the third rotating body 90 come into contact with the first engaging portion 110 and the first wall portion 86C of the second rotating body 86 before. .. At the timing when the first wall portion 86C of the second rotating body 86 passes through the first engaging portion 110 of the claw member 88, the wall portion of the concave 90B of the third rotating body 90 moves the claw member 88 from the first position. By moving to two positions, relative rotation between the first rotating body 84 and the second rotating body 86 is allowed.

As shown in FIG. 11, when the crank 12 rotates in the first direction R1 and when the second to fifth gears, the rotation speed of the second rotating body 86 is the rotation speed of the first rotating body 84. Because of the speed or higher, the drive claw 74A is pushed by the first wall portion 86C of the recess 86B and moves to the recess 84B of the first rotating body 84. In this case, the second rotating body 86 is rotated in the third direction R3 until the convex portion 90A of the third rotating body 90 comes into contact with the convex portion 86A of the second rotating body 86. In this case, the contact portion 114 of the claw member 88 and the wall portion of the concave 90B of the third rotating body 90 come into contact with the first engaging portion 110 and the first wall portion 86C of the second rotating body 86 before. As a result, at the timing when the first wall portion 86C of the second rotating body 86 passes through the first engaging portion 110 of the claw member 88, the wall portion of the recess 90B of the third rotating body 90 first passes the claw member 88. By moving from the position to the second position, the relative rotation between the first rotating body 84 and the second rotating body 86 is allowed.

As shown in FIG. 12, when the crank 12 rotates in the second direction R2, the rotation speed of the second rotating body 86 in the third direction R3 is relatively equal to or higher than the rotation speed of the first rotating body 84. The drive claw 74A is pushed by the first wall portion 86C of the recess 86B and moves to the recess 84B of the first rotating body 84. In this case, the second rotating body 86 is rotated in the fourth direction R4 until the convex portion 90A of the third rotating body 90 comes into contact with the convex portion 86A of the second rotating body 86. In this case, when the contact portion 114 of the claw member 88 moves to a position corresponding to the recess 90B of the third rotating body 90, the claw member 88 is moved from the second position by the urging force of the first support member 92 and the second support member 93. Move to the first position. The first engaging portion 110 of the claw member 88 and the first wall portion 86C of the second rotating body 86 come into contact with each other before the contact portion 114 and the wall portion of the concave 90B of the third rotating body 90. When the claw member 88 moves to the first position, the first rotating body 84 and the second rotating body 86 rotate integrally.

As shown in FIG. 13, when the crank 12 rotates in the second direction R2, if the rotation of the third rotating body 90 with respect to the second rotating body 86 is insufficient, the convex portion 90A of the third rotating body 90 becomes A state in which the second rotating body 86 is not rotated in the fourth direction R4 may be formed until it comes into contact with the convex portion 86A of the second rotating body 86. In the state of FIG. 13, when the crank 12 rotates in the second direction R2 to the case where it rotates in the first direction R1, the engaging portion 96 of the claw member 88 has the first rotating body 86 of the second rotating body 86. A force is applied that engages with the wall portion 86C to become one with the second rotating body 86 and stay in place. In addition, the contact portion 114 of the claw member 88 is subjected to a radial inward force from the concave 90B of the third rotating body 90. Since the claw member 88 is provided with the second connecting portion 106 to increase the rigidity, the claw member 88 is less likely to be deformed with respect to loads in different directions.

As shown in FIG. 14, the switching mechanism 42 further includes a resistance applying member 118. The resistance applying member 118 imparts resistance to the rotation when the first sun gear 48 rotates with respect to the shaft member 40A. When the crank 12 rotates in the first direction R1 and the driving force is transmitted to the first planetary gear mechanism 44, and the rotational state of the first sun gear 48 is in an allowable state, the first sun gear 48 is an axis. It rotates in the fifth direction R5 with respect to the member 40A. When the crank 12 rotates in the second direction R2 and the driving force is transmitted to the first planetary gear mechanism 44, and the rotational state of the first sun gear 48 is in an allowable state, the first sun gear 48 is an axis. It rotates in the sixth direction R6 with respect to the member 40A. The resistance applying member 118 imparts resistance to the rotation of the first sun gear 48 when the first sun gear 48 rotates in the sixth direction R6 with respect to the shaft member 40A. When the first sun gear 48 rotates in the sixth direction R6 with respect to the shaft member 40A, the rotational resistance applied to the first sun gear 48 is the fifth direction of the first sun gear 48 with respect to the shaft member 40A. It is stronger than the rotational resistance applied to the first sun gear 48 when rotating to R5.

The resistance applying member 118 is provided between the inner peripheral portion of the first solar gear 48 and the shaft member 40A. The resistance applying member 118 is, for example, a slide spring. When the first solar gear 48 includes a plurality of first solar gears 48A, 48B, the resistance applying member 118 is preferably provided only on one first solar gear 48A, 48B. Preferably, when the first sun gear 48 includes a plurality of first sun gears 48A and 48B, the resistance applying member 118 is provided on the first sun gear 48A and 48B having the largest number of teeth. In the present embodiment, the resistance applying member 118 is provided on the first solar gear 48B.

The resistance applying member 118 includes, for example, an annular portion 118A and a bent portion 118B. The annulus 118A is fitted into the inner peripheral portion of the first solar gear 48. The bent portion 118B is formed so as to project toward the shaft member 40A so that it can be located inside the recess 40B provided on the outer peripheral portion of the shaft member 40A. The recess 40B may be continuous with the recess in which the regulation claw 72B of the control mechanism 72 is arranged. Preferably, the bent portion 118B is provided at one end of the coil member of the resistance applying member 118. When the first sun gear 48 rotates in the fifth direction R5, the bent portion 118B rotates in the fifth direction R5 together with the first sun gear 48 while being pushed up by the wall portion of the recess 40B. When the first solar gear 48B rotates in the sixth direction R6, the bending portion 118B comes into contact with the wall portion of the recess 40B, so that the rotation of the first solar gear 48 with respect to the shaft member 40A is hindered. The first solar gear 48 rotates in the sixth direction R6 while sliding with respect to the resistance applying member 118. Therefore, the first solar gear 48 is less likely to rotate in the sixth direction R6.

When the crank 12 rotates in the second direction R2, the first sun gear 48 tries to rotate in the sixth direction R6. When the rotation of the first sun gear 48 with respect to the shaft member 40A is not hindered, as shown in FIG. 13, the second rotation is performed until the convex portion 90A of the third rotating body 90 comes into contact with the convex portion 86A of the second rotating body 86. A state occurs in which the body 86 is not sufficiently rotated in the fourth direction R4. In this state, when the crank 12 tries to rotate in the first direction R1, the claw member 88 comes into contact with the engaging portion 96 of the claw member 88 in a state of being engaged with the first wall portion 86C of the second rotating body 86. The portion 114 is pushed against the wall portion of the concave 90B of the third rotating body 90.

When the crank 12 rotates in the second direction R2, the resistance applying member 118 hinders the rotation of the first sun gear 48 in the sixth direction R6, so that the rotation input to the first planetary gear mechanism 44 is the first rotation. It is accelerated by the sun gear 48. Therefore, the third rotating body 90 rotates in the fourth direction R4 at a high speed with respect to the second rotating body 86. Therefore, when the crank 12 rotates in the second direction R2, the third rotating body 90 becomes the second rotating body 86 until the convex portion 90A of the third rotating body 90 comes into contact with the convex portion 86A of the second rotating body 86. On the other hand, it preferably rotates in the fourth direction R4.

Since the resistance applying member 118 is provided on the first sun gear 48B having the largest number of teeth among the first sun gears 48, the rotation of the third rotating body 90 in the fourth direction R4 can be suitably accelerated. Since the first solar gear 48B having the largest number of teeth among the first solar gears 48 has a large outer diameter, the resistance applying member 118 can be easily assembled.

A method of attaching the claw member 88 to the first rotating body 84 will be described with reference to FIGS. 15 to 19. The method of attaching the claw member 88 to the first rotating body 84 includes a first step, a second step, a third step, a fourth step, and a fifth step.

The first step includes a step of arranging the first support member 92 in the first support member arranging portion 98 of the first claw member 88A. One of the first end portion 92B and the second end portion 92C of the first support member 92 is inserted into the hole 98A of the first support member arrangement portion 98 of the first claw member 88A, and the first claw member 88A is inserted into the first support member. It is arranged in the ring portion 92A of 92. In the first step, the first claw member 88A extends the first end portion 92B and the second end portion 92C of the first support member 92 toward the second support member arranging portion 116 of the first claw member 88A. 1 Arranged on the support member 92.

The second step includes a step of arranging the first support member 92 in the first support member arranging portion 98 of the second claw member 88B. One of the first end portion 92B and the second end portion 92C of the first support member 92 is inserted into the hole 98A of the first support member arrangement portion 98 of the second claw member 88B, and the first claw member 88A is inserted into the first support member. It is arranged in the ring portion 92A of 92. In the second step, the first end portion 92B and the second end portion 92C of the first support member 92 have the second claw member 88B extending toward the second support member arrangement portion 116 of the second claw member 88B. 1 Arranged on the support member 92. As shown in FIG. 15, the first claw member 88A and the second claw member 88B differ by 180 degrees in the circumferential direction of the annular portion 92A by the first step and the second step. The 88A and the second claw member 88B are arranged on the first support member 92.

The third step includes a step of arranging the first claw member 88A and the second claw member 88B arranged in the first support member 92 in the recess 84A of the first rotating body 84, respectively, in the second step. By the third step, as shown in FIG. 16, the first claw member 88A and the second claw member 88B are arranged in the recess 84A.

The fourth step includes a step of inserting the two drive claws 74A into the recess 84B. By the fourth step, as shown in FIG. 16, two drive claws 74A are arranged between the recess 84B and the first support member 92.

The fifth step includes a step of arranging the second support member 93 on the first claw member 88A, the second claw member 88B, and the two drive claws 74A. The second support member 93 is provided inside the groove formed in the second support member arranging portion 116 of the first claw member 88A, the second support member arranging portion 116 of the second claw member 88B, and the two drive claws 74A. Be placed. In the fifth step, the first end portion 93B and the second end portion 93C of the second support member 93 are arranged on the first rotating body 84 so as to extend toward the first support member 92. According to the fifth step, as shown in FIG. 18, the first end portion 93B and the second end portion 93C of the second support member 93 are formed with the annulus portion 92A of the first support member 92 and the outer peripheral portion of the first rotating body 84. Placed between. According to the fifth step, as shown in FIG. 19, the first end portion 92B and the second end portion 92C of the first support member 92 are formed with the annulus portion 93A of the second support member 93 and the outer peripheral portion of the first rotating body 84. Placed between.

<Modification example>
The description of the embodiment is an example of possible embodiments of a drive unit for a manpower driven vehicle according to the present disclosure and is not intended to limit that embodiment. A drive unit for a human-powered vehicle according to the present disclosure may take, for example, a modification of the embodiment shown below and a combination of at least two modifications that are consistent with each other. In the following modification, the parts common to the embodiment are designated by the same reference numerals as those in the embodiment, and the description thereof will be omitted.

The first connecting portion 104 may connect the first engaging portion 110 of the first portion 100 and the contact portion 114 of the second portion 102.
The second connection portion 106 may connect the first base portion 108 of the first portion 100 and the second base portion 112 of the second portion 102.
-At least one of the first connecting portion 104 and the second connecting portion 106 may be provided in the intermediate portion of the claw member 88 in the circumferential direction of the first rotating body 84.

In the claw member 88, the first portion 100 and the second portion 102 may be connected by a connecting portion other than the first connecting portion 104 and the second connecting portion 106.

The claw member 88 may be closed on the side of the base portion 94 of the first support member arranging portion 98 near the second rotating body 86. In this case, for example, a hole for passing the first support member 92 is formed in the first connection portion 104.

-The switching mechanism 42 can also be used for a drive unit other than the internal transmission. For example, it may be applied to a drive unit including a motor that assists the propulsion of the human-powered vehicle 10. The switching mechanism of the present disclosure is particularly preferably used for a drive unit having a switching mechanism including a claw member including an engaging portion and a contact portion.

As used herein, the expression "at least one" means "one or more" of the desired options. As an example, the expression "at least one" as used herein means "only one option" or "both two options" if the number of options is two. As another example, the expression "at least one" as used herein means "only one option" or "combination of two or more arbitrary options" if the number of options is three or more. means.

10 ... Human-powered vehicle, 12 ... Crank, 14C ... Hub, 40 ... Drive unit, 42 ... Switching mechanism, 44 ... 1st planetary gear mechanism, 46 ... 2nd planetary gear mechanism, 84 ... 1st rotating body, 86 ... 2nd Rotating body, 88 ... claw member, 88A ... first claw member, 88B ... second claw member, 90 ... third rotating body, 92 ... first support member, 93 ... second support member, 94 ... base part, 96 ... Engagement part, 98 ... 1st support member arrangement part, 100 ... 1st part, 102 ... 2nd part, 104 ... 1st connection part, 106 ... 2nd connection part, 108 ... 1st base part, 110 ... 1st Engagement portion, 112 ... 2nd base portion, 114 ... contact portion, 116 ... second support member arranging portion.

Claims (18)

A drive unit for human-powered vehicles
Equipped with a switching mechanism that switches the transmission state of the driving force of a human-powered vehicle
The switching mechanism is
The first rotating body and
The second rotating body and
The first position, which is attached to the first rotating body and engages with the second rotating body to integrally rotate the first rotating body and the second rotating body, and the first rotating body and the second rotating body. A claw member that moves to and from a second position that allows relative rotation with the rotating body is provided.
The claw member
A first portion extending so as to intersect the circumferential direction of the first rotating body, and
The second part extending so as to intersect the circumferential direction and
A first connection portion connecting the first portion and the second portion,
A drive unit including a second connection portion that connects the first portion and the second portion at a position away from the first connection portion. The switching mechanism further includes a third rotating body.
The first portion includes a first base portion attached to the first rotating body and a first engaging portion that engages with the second rotating body.
The second portion includes a second base portion attached to the first rotating body and a contact portion for moving the claw member to the second position by contacting with the third rotating body. The drive unit according to 1. The drive unit according to claim 2, wherein the first connection portion connects the first base portion and the second base portion. The drive unit according to claim 2 or 3, wherein the second connecting portion connects the first engaging portion and the contact portion. The drive unit according to claim 4, wherein the second connecting portion connects the first engaging portion and the contact portion so as to be flush with each other in a direction parallel to the axial direction. The drive unit according to any one of claims 1 to 5, wherein the first portion, the second portion, the first connection portion, and the second connection portion are integrally formed. The first dimension of the first portion in the direction parallel to the axial direction of the first rotating body and the second dimension of the second portion in the direction parallel to the axial direction of the first rotating body are the first dimension. The drive unit according to any one of claims 1 to 6, which is longer than the distance from the first portion to the second portion in a direction parallel to the axial direction of the rotating body. The drive unit according to claim 7, wherein the first dimension is different from the second dimension. The switching mechanism further includes a first support member that supports the claw member.
Any one of claims 1 to 8, wherein the claw member is located between the first portion and the second portion, and further includes a first support member arranging portion in which the first support member is arranged. The drive unit described in the section. A drive unit for human-powered vehicles
Equipped with a switching mechanism that switches the transmission state of the driving force of a human-powered vehicle
The switching mechanism is
The first rotating body and
The second rotating body and
The first position, which is attached to the first rotating body and engages with the second rotating body to integrally rotate the first rotating body and the second rotating body, and the first rotating body and the second rotating body. A claw member that moves between a second position that allows relative rotation with a rotating body and a first support member that supports the claw member are provided.
The claw member
The base part attached to the first rotating body and
An engaging portion that engages with the second rotating body,
A first support member arranging portion extending from the base portion toward the engaging portion and arranging the first support member is provided.
The first support member arranging portion is
The side of the base portion close to the first rotating body is closed.
A drive unit in which a side close to the first rotating body is opened and a side close to the second rotating body is closed in the engaging portion. The drive unit according to claim 10, wherein the first support member arranging portion is a base portion in which a side close to the first rotating body is closed and a side close to the second rotating body is opened. The drive unit according to any one of claims 9 to 11, wherein the first support member is a coil spring. The claw member includes a first claw member and a second claw member.
The drive unit according to claim 12, wherein the first support member is arranged in the first support member arranging portion of the first claw member and the first support member arranging portion of the second claw member. A second support member for supporting the claw member is further provided.
13. The thirteenth aspect of the present invention, wherein the first claw member and the second claw member are attached to the first rotating body by engaging the first support member and the second support member with each other. Drive unit. The drive unit according to claim 14, wherein the claw member further includes a second support member arranging portion in which the second support member is arranged in a portion different from the first support member arranging portion. A first planetary gear mechanism and a second planetary gear mechanism to which the rotation of the first planetary gear mechanism is input are further provided.
The first planetary gear mechanism includes the first rotating body.
The drive unit according to any one of claims 1 to 15, wherein the second planetary gear mechanism includes the second rotating body. The rotation of the crank of the human-powered vehicle is transmitted to the first rotating body, and the rotation is transmitted to the first rotating body.
When the crank rotates in the first direction in which the human-powered vehicle advances, the claw member is configured to be located in a second position.
The invention according to any one of claims 1 to 16, wherein when the crank rotates in a second direction opposite to the first direction, the claw member is configured to be located in the first position. Drive unit. The drive unit according to any one of claims 1 to 17, which constitutes a hub of the human-powered vehicle.

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