JP7210154B2 - Manpowered vehicle rotation device - Google Patents

Description

The present invention relates to a rotating device for manpowered vehicles.

Patent Literature 1 discloses an example of a rotation device for a manpowered vehicle. This rotating device includes a first rotating body rotatably provided on a hub axle, a first member provided on the first rotating body, a clutch mechanism including a second member pressed by the first member, a second A member is provided and includes a second rotating body coupled to the first rotating body via a clutch mechanism. The first rotating body and the second rotating body rotate relative to each other according to the relative rotational force generated between the first rotating body and the second rotating body.

JP-A-2007-62718

It is preferable that the pressing force between the first member and the second member can be suitably adjusted.

A rotating device for a manpowered vehicle according to a first aspect of the present invention includes a first rotating body rotatably provided on a support shaft, a first member provided on the first rotating body, and a member pressed by the first member. a second rotating body provided with the second member and connected to the first rotating body via the clutch mechanism; an adjusting mechanism for adjusting the pressing force between the member and the second member.
According to the manpowered vehicle rotation device according to the first aspect, the pressing force between the first member and the second member can be preferably adjusted by the adjustment mechanism that operates according to the load on the support shaft.

In the manpowered vehicle rotating device of the second aspect according to the first aspect, the clutch mechanism includes a biasing member biasing the first member and the second member toward each other.
According to the manpowered vehicle rotating device according to the second aspect, the second member can be easily pressed against the first member.

In the manpowered vehicle rotation device according to the third aspect according to the second aspect, the adjusting mechanism adjusts the biasing force of the biasing member.
According to the manpowered vehicle rotation device according to the third aspect, the pressing force between the first member and the second member can be easily adjusted.

In the rotation device for a manpowered vehicle according to the fourth aspect according to the third aspect, the adjusting mechanism moves the supporting shaft in the axial direction to apply the biasing member to the first member and the second member. It includes a moving member that adjusts force.
According to the manpowered vehicle rotation device according to the fourth aspect, the pressing force between the first member and the second member can be easily adjusted.

In the manpowered vehicle rotating device according to the fifth aspect according to the fourth aspect, at least one of the first rotating body and the second rotating body includes a first threaded portion, and the moving member is attached to the first threaded portion. The adjusting mechanism includes a second threaded portion that is screwed into the first threaded portion, and the adjustment mechanism adjusts the biasing force of the biasing member according to the amount of screwing of the second threaded portion into the first threaded portion.
According to the rotation device of the manpowered vehicle according to the fifth aspect, the rotation device can be configured simply.

In the manpowered vehicle rotation device according to the sixth aspect according to the fourth or fifth aspect, the adjusting mechanism further includes a moving mechanism for moving the moving member.
According to the manpowered vehicle rotating device according to the sixth aspect, the moving member can be easily moved.

In the manpowered vehicle rotating device according to the seventh aspect according to the sixth aspect, the moving mechanism includes a drive unit that rotates the moving member.
According to the manpowered vehicle rotating device according to the seventh aspect, the moving member can be easily rotated.

In the manpowered vehicle rotating device of the eighth aspect according to the seventh aspect, the drive unit comprises an electric motor.
According to the rotation device of the manpowered vehicle according to the eighth aspect, the mechanical configuration of the drive section can be simplified.

In the rotation device for a manpowered vehicle according to the eighth aspect, the moving mechanism includes a speed changer that changes the speed of rotation of the electric motor and transmits the speed to the moving member.
According to the manpowered vehicle rotating device according to the ninth aspect, the rotation of the electric motor can be suitably transmitted to the moving member.

The manpowered vehicle rotation device according to the tenth aspect according to the eighth or ninth aspect, further comprising a detection unit that detects a load on the support shaft.
According to the manpowered vehicle rotating device according to the tenth aspect, the load on the support shaft can be easily detected.

In the rotation device for a manpower-driven vehicle according to the tenth aspect, the detection unit detects, as loads related to the support shaft, the load on the support shaft, the load on the front fork of the manpower-driven vehicle, the manpower-driven vehicle, and the load on the support shaft. configured to detect at least one of a load on a saddle of a vehicle and a load on a handlebar of said manpowered vehicle.
According to the rotation device of the manpowered vehicle according to the eleventh aspect, various loads on the support shaft can be detected.

The rotating device for a manpowered vehicle according to the twelfth aspect according to the tenth or eleventh aspect, further comprising a control section for controlling the electric motor based on the detection result of the detection section.
According to the rotation device of the manpowered vehicle according to the twelfth aspect, the operation of the electric motor can be preferably controlled.

In the manpowered vehicle rotating device according to any one of the first to twelfth aspects, the first rotating body and the second rotating body are rotatably supported by a frame of the manpowered vehicle. provided on the hub shell.
According to the rotation device of the manpowered vehicle according to the thirteenth aspect, the rotation device can be configured simply.

The manpowered vehicle rotating device according to the 14th aspect according to the 13th aspect, further comprising a bracket fixed to the frame, wherein the adjustment mechanism is provided on the bracket.
According to the manpowered vehicle rotating device according to the fourteenth aspect, the adjusting mechanism can be easily fixed to the frame.

The rotating device for a manpowered vehicle according to the fifteenth aspect according to the fourteenth aspect, further comprising a drum brake mechanism provided between the bracket and the first rotating body.
According to the manpowered vehicle rotating device according to the fifteenth aspect, the first rotating body can be suitably braked.

In the manpowered vehicle rotating device according to the sixteenth aspect according to the fourteenth or fifteenth aspect, the bracket is configured to be attachable to a front fork of the frame.
According to the manpowered vehicle rotation device according to the sixteenth aspect, the bracket can be easily attached to the front fork.

ADVANTAGE OF THE INVENTION According to the rotation apparatus of the manpower-driven vehicle regarding this invention, the pressing force between a 1st member and a 2nd member can be adjusted suitably.

1 is a side view of a manpowered vehicle on which the rotating device for a manpowered vehicle according to the first embodiment is mounted; FIG. 2 is a front view of the front fork and hub with the rotating device of FIG. 1 attached; FIG. 2 is a perspective view of the rotating device of FIG. 1 seen from the outside of the hub; FIG. 2 is a perspective view of the rotating device of FIG. 1 viewed from the hub side; FIG. FIG. 4 is a cross-sectional view taken along line D5-D5 in FIG. 3; FIG. 6 is a cross-sectional view taken along line D6-D6 in FIG. 5; FIG. 6 is an exploded perspective view of the clutch mechanism of FIG. 5 and the vicinity of the clutch mechanism; FIG. 7 is a perspective view of the first rotating body seen from the opposite side. FIG. 7 is a perspective view of the second rotating body seen from the opposite side. Sectional drawing of the rotation apparatus of 2nd Embodiment.

(First embodiment)
With reference to FIG. 1, a manpowered vehicle A to which a rotating device 10 for a manpowered vehicle is applied will be described. Here, a human-powered vehicle means a vehicle that at least partially uses human power as a driving force for running, and includes vehicles that use electric power to assist human power. Vehicles that use only motive power other than human power are not included in man-powered vehicles. In particular, a vehicle using only an internal combustion engine as a motive power is not included in a human-powered vehicle. Typically, the human-powered vehicle is assumed to be a small light vehicle, and a vehicle that does not require a license to drive on public roads. The illustrated human-powered vehicle A is an e-bike that includes an assist device E that assists the human-powered vehicle A in propulsion using electrical energy. More specifically, the illustrated human powered vehicle A is a city cycle. The configuration of the manpowered vehicle A can be changed arbitrarily. The human-powered vehicle A can be configured without the assist device E. In other words, the human-powered vehicle A may be a normal bicycle that is driven only by human-powered driving force. The type of manpowered vehicle A may be road bike, mountain bike, cross bike, cargo bike, or recumbent. The number of wheels of the human-powered vehicle A may be two or three, and the number of wheels does not matter. Note that the rotation device 10 of the manpowered vehicle is simply referred to as the rotation device 10 below.

A human-powered vehicle A includes a main body A1, a handlebar A2, wheels A3, a handle stem A4, a drive mechanism B, an operation section C, a battery unit D, an assist device E, and a rotating device 10. The main body A1 has a frame A5. The wheels A3 include a front wheel A31 and a rear wheel A32.

The drive mechanism B transmits human power driving force to the rear wheel A32. The drive mechanism B includes a front sprocket B1, a rear sprocket B2, a chain B3, a crank mechanism F, and a pair of pedals B4. In addition, the drive mechanism B may be, for example, a belt drive type or a shaft drive type.

The crank mechanism F includes a crankshaft F1, a right crank arm F2 and a left crank arm F3. The crankshaft F1 is rotatably supported by a bottom bracket (not shown) provided on the frame A5. Right crank arm F2 and left crank arm F3 are each connected to crankshaft F1. One of the pair of pedals B4 is rotatably supported by the right crank arm F2. The other of the pair of pedals B4 is rotatably supported by the left crank arm F3.

Front sprocket B1 is connected to crankshaft F1. The rotation axis of the crankshaft F1 is coaxial with the rotation axis of the front sprocket B1. The structure for connecting the front sprocket B1 with the crankshaft F1 can be arbitrarily selected. A one-way clutch (not shown) is provided between the crankshaft F1 and the front sprocket B1. The one-way clutch transmits the rotation of the crankshaft F1 to the front sprocket B1 when the rotational speed of the forward-rotating crankshaft F1 is higher than the rotational speed of the front sprocket B1. Note that the one-way clutch may be omitted.

The rear sprocket B2 is supported by the hub (rear hub) of the rear wheel A32. Chain B3 is wound around front sprocket B1 and rear sprocket B2. When the crankshaft F1 and the front sprocket B1 are rotated forward by the human-powered driving force applied to the pair of pedals B4, the rear wheel A32 is rotated forward by the human-powered driving force transmitted via the chain B3 and the rear sprocket B2.

The operating portion C is attached to the handlebar A2. The operating portion C is connected to a drum brake mechanism 30 (see FIG. 6) of the rotary device 10 by a mechanical control cable G (see FIG. 3). The operation unit C may be wirelessly connected to the control unit 26 (see FIG. 5) of the rotating device 10 so as to be communicable. It should be noted that illustration of the mechanical control cable G is omitted in FIG.

The battery unit D includes a battery D1 and a battery holder D2 for detachably attaching the battery D1 to the frame A5. Battery D1 includes one or more battery cells. Battery D1 is configured by a rechargeable battery. The battery D1 is electrically connected to the motor E3 of the assist device E. Battery D1 powers motor E3.

The assist device E includes a housing E1, a drive circuit E2, and a motor E3. The housing E1 is provided on the frame A5. Drive circuit E2 and motor E3 are accommodated in housing E1. The drive circuit E2 controls power supplied from the battery D1 to the motor E3. The motor E3 assists the manpowered vehicle A in propulsion. Motor E3 is constituted by an electric motor. Motor E3 is coupled to crankshaft F1 or an internal transmission (not shown). A power transmission path between the motor E3 and the crankshaft F1 or the internal transmission is preferably provided with a one-way clutch (not shown) to prevent the motor E3 from rotating due to the rotational force of the crankshaft F1.

As shown in FIG. 2, the rotating device 10 is attached to a frame A5 and a hub H (front hub H) of a front wheel A31 provided on the frame A5. The hub H is provided on the front fork A6. The hub H includes a support shaft H1 and a hub shell H2 rotatably supported on the support shaft H1. The support shaft H1 is a hub shaft. The front forks A6 are attached to both ends of the hub H in the axial direction.

As shown in FIGS. 3 to 6, the rotating device 10 includes a first rotating body 12 rotatably provided on a support shaft H1 (see FIG. 2), a first member 14 provided on the first rotating body 12, and a clutch mechanism 18 including a second member 16 pressed against the first member 14, and a second rotor 20 provided with the second member 16 and connected to the first rotor 12 via the clutch mechanism 18 and an adjusting mechanism 22 that adjusts the pressing force between the first member 14 and the second member 16 according to the load on the support shaft H1. The first rotating body 12 and the second rotating body 20 are provided on a hub shell H2 that is rotatably supported by the frame A5 of the manpowered vehicle A. As shown in FIG. Therefore, the rotation device 10 can be configured simply.

The rotating device 10 preferably further includes a detector 24 (see FIG. 2) that detects the load on the support shaft H1. Therefore, the load on the support shaft H1 can be easily detected. The rotating device 10 preferably further includes a controller 26 (see FIG. 2) that controls the electric motor 68 (see FIG. 5) based on the detection result of the detector 24. FIG. Therefore, the operation of the electric motor 68 can be preferably controlled. The rotating device 10 preferably further comprises a bracket 28 fixed with respect to the frame A5, and the adjusting mechanism 22 is provided on the bracket 28. As shown in FIG. Therefore, the adjustment mechanism 22 can be easily fixed to the frame A5. The rotating device 10 preferably further comprises a drum brake mechanism 30 provided between the bracket 28 and the first rotating body 12 . Therefore, the first rotating body 12 can be suitably braked.

Brackets 28 shown in FIGS. 3 and 4 are attachable to frame A5. The bracket 28 is configured to be attachable to the front fork A6 (see FIG. 2). Therefore, the bracket 28 can be easily attached to the front fork A6. The bracket 28 is provided with a guide portion 28A that guides the mechanical control cable G that operates the drum brake mechanism 30 . The mechanical control cable G is a Bowden cable. The mechanical control cable G comprises an inner cable G1 and an outer casing G2 that at least partially covers the inner cable G1. An end portion of the outer casing G2 is attached to the guide portion 28A.

As shown in FIG. 5, the drum brake mechanism 30 includes a friction member 32, a cooling disk 34, and a brake operating mechanism 36. As shown in FIG. The friction member 32 is provided so as to be in contact with the first rotor 12 . The cooling disk 34 is provided on the outer periphery of the first rotor 12 . The cooling disk 34 is configured to rotate integrally with the first rotating body 12 by press fitting, caulking, spline fitting, combinations thereof, or the like. In the rotating device 10, the ends of the first rotating body 12 and the second rotating body 20 opposite to the hub shell H2 in the rotation axis direction X are partially covered by a cover 38 attached to the bracket 28. As shown in FIG. The rotation axis direction X of the first rotor 12 and the second rotor 20 is the direction of the rotation axis of the hub shell H2.

As shown in FIGS. 7-9, the first rotor 12 has a cylindrical shape. The second rotating body 20 has a cylindrical shape. At least part of the second rotating body 20 is arranged inside the first rotating body 12 . The second rotating body 20 has a flange portion 20A at the end on the hub H side in the rotation axis direction X. As shown in FIG. The second rotor 20 is spline-fitted with the hub shell H2. Specifically, a spline portion 20B is provided on the inner peripheral portion of the second rotating body 20 . The spline portion 20B is spline-fitted with a plurality of protrusions provided on the outer peripheral portion of the hub shell H2, thereby connecting the second rotating body 20 to the hub shell H2 so as to be capable of integral rotation. It should be noted that any configuration other than the spline fitting may be employed as long as the hub shell H2 and the second rotating body 20 are coupled so as to be rotatable together. Alternatively, the hub shell H2 and the second rotor 20 may be integrally formed. A groove 20C is formed in a portion of the inner peripheral portion of the second rotor 20 closer to the hub shell H2 in the rotation axis direction X than the spline portion 20B. As shown in FIG. 5, a seal member 40 is provided in the groove 20C. The seal member 40 is provided in the groove 20C so as to be in contact with the outer peripheral portion of the hub shell H2. The seal member 40 is provided to prevent foreign matter from entering the clutch mechanism 18 . The seal member 40 is arranged between the first rotating body 12 and the second rotating body 20 . In one example, the sealing member 40 is an O-ring. The seal member 40 is arranged between the outer peripheral portion of the flange portion 20A of the second rotating body 20 and the inner peripheral portion 12B of the first rotating body 12 .

At least part of the brake operating mechanism 36 is arranged inside the first rotating body 12 and on the opposite side of the second rotating body 20 from the hub shell H2 in the rotation axis direction X. As shown in FIG. The first rotor 12 has a friction surface 12A on its inner periphery. The friction surface 12A is formed in a portion of the inner peripheral portion of the first rotor 12 that faces the brake operating mechanism 36 . As shown in FIG. 8, a plurality of grooves 12AX extending in the circumferential direction S of the first rotor 12 are formed on the friction surface 12A. Thereby, the friction member 32 and the friction surface 12A can be brought into linear contact at a plurality of points.

As shown in FIGS. 5 and 6 , the brake operating mechanism 36 is configured to bring the friction member 32 into contact with the first rotor 12 . The brake operating mechanism 36 includes a rotating body 42 , a cam member 44 , multiple rolling elements 46 and a retainer 48 . Rotating body 42 is attached to bracket 28 so as to be rotatable relative to bracket 28 . The rotor 42 is provided with a cable fixing portion 42A (see FIG. 3) to which the end of the inner cable G1 is fixed.

The cam member 44 is connected to the rotating body 42 so as to rotate together with the rotating body 42 . As shown in FIG. 6, the cam member 44 has a disk shape. The cam member 44 includes a plurality of recesses 44A provided on the outer periphery and a cam surface 44B provided between two adjacent recesses 44A. The cam surface 44B is provided so as to bulge outward in the radial direction DA of the first rotor 12 as it moves to one side in the circumferential direction S of the first rotor 12 (clockwise direction in FIG. 6). In the non-braking state, the rolling elements 46 are arranged on the outer periphery of the rotating body 42 and at positions corresponding to the recesses 44A.

The retainer 48 rotatably retains the plurality of rolling elements 46 respectively. Further, the retainer 48 retains the plurality of rolling elements 46 so as to be movable in the radial direction DA. A plurality of friction members 32 are arranged outside the plurality of rolling elements 46 in the radial direction DA. In this embodiment, brake operating mechanism 36 includes three friction members 32 and six rolling elements 46 . Also, in this embodiment, one friction member 32 is arranged for two rolling elements 46 . Therefore, the friction member 32 is provided so as to be in contact with a plurality of (here, two) rolling elements 46 .

The friction member 32 is, for example, a brake shoe. The friction member 32 is provided so as to be in contact with the first rotor 12 . The friction member 32 is arranged so as to be in contact with the friction surface 12A of the first rotor 12 . Specifically, the friction surface 12A of the first rotor 12 is arranged outside the plurality of friction members 32 in the radial direction DA. When the inner cable G1 is pulled along with the operation of the operating portion C (see FIG. 1), the rotating body 42 rotates, causing the cam member 44 to rotate. By moving the cam member 44 relative to the rolling element 46 in the other circumferential direction S (counterclockwise direction in FIG. 6), the cam surface 44B of the cam member 44 pushes the rolling element 46 outward in the radial direction DA. , the rolling element 46 presses the friction member 32 against the friction surface 12A of the first rotor 12 . Heat generated between the friction member 32 and the friction surface 12</b>A is released to the outside of the rotating device 10 through the cooling disk 34 .

The clutch mechanism 18 shown in FIGS. 5 and 7 rotates the first rotating body 12 and the second rotating body 20 relative to each other in accordance with the relative rotating force generated between the first rotating body 12 and the second rotating body 20 . The first rotating body 12 and the second rotating body 20 are connected so as to allow . The clutch mechanism 18 is provided between the inner peripheral portion 12</b>B of the first rotating body 12 and the outer peripheral portion of the second rotating body 20 . The clutch mechanism 18 is arranged closer to the hub H than the brake operating mechanism 36 in the rotation axis direction X. As shown in FIG.

The first member 14 is non-rotatably provided on the first rotor 12 . The second member 16 is non-rotatably provided on the second rotor 20 . In this embodiment, clutch mechanism 18 includes three first members 14 and three second members 16 . Preferably, the number of first members 14 and the number of second members 16 are equal. The first member 14 has a disk shape. The second member 16 has a disk shape. The first members 14 and the second members 16 are alternately superimposed.

The first member 14 is provided on the inner circumference of the first rotor 12 . Specifically, the first member 14 is provided on the inner peripheral portion 12B of the first rotating body 12 via a support member 52 provided on the inner peripheral portion 12B of the first rotating body 12 . The outer peripheral portion of the support member 52 is spline-fitted with the inner peripheral portion 12B of the first rotor 12 . The inner peripheral portion of the support member 52 is spline-fitted with the first member 14 . The second member 16 is provided on the outer peripheral portion of the second rotating body 20 . The inner peripheral portion of the second member 16 is spline-fitted with the outer peripheral portion of the second rotating body 20 .

At least one of the first member 14 and the second member 16 has at least one recess 54 in the surface facing the other of the first member 14 and the second member 16 . In the example shown in FIG. 7, recess 54 is formed in first member 14 . The recess 54 is a through hole. A plurality of recesses 54 are provided around the circumferential direction S in one first member 14 . The plurality of first members 14 are supported by the support member 52 so that the phases of the plurality of concave portions 54 of each first member 14 match in the circumferential direction S. As shown in FIG. The multiple first members 14 are supported by the support member 52 so that the multiple recesses 54 are aligned in the rotation axis direction X. As shown in FIG. Lubricating oil is held in the concave portion 54 . Lubricant moves between the interior of recess 54 and between first member 14 and second member 16 .

The clutch mechanism 18 shown in FIG. 5 includes a biasing member 50 that biases the first member 14 and the second member 16 toward each other. Therefore, the second member 16 can be easily pressed against the first member 14 . The biasing member 50 is arranged on the side opposite to the hub H with respect to the first member 14 and the second member 16 in the rotation axis direction X. As shown in FIG. The biasing member 50 is, for example, a disc spring. At least one of the first rotating body 12 and the second rotating body 20 has a receiving portion 56 that receives the biasing force of the biasing member 50 via the first member 14 and the second member 16 . As shown in FIGS. 5 and 9, the receiving portion 56 is provided on the flange portion 20A of the second rotating body 20. As shown in FIGS. The plurality of first members 14 and the plurality of second members 16 are sandwiched between the biasing member 50 and the receiving portion 56 .

The adjusting mechanism 22 adjusts the biasing force of the biasing member 50 . Therefore, the pressing force between the first member 14 and the second member 16 can be easily adjusted. As shown in FIG. 5, the adjustment mechanism 22 includes a moving member 58 that adjusts the biasing force of the biasing member 50 on the first member 14 and the second member 16 by moving in the axial direction of the support shaft H1. . Therefore, the pressing force between the first member 14 and the second member 16 can be easily adjusted. At least one of the first rotating body 12 and the second rotating body 20 includes a first threaded portion 60 . In the illustrated example, the first threaded portion 60 is provided on the second rotating body 20 . The moving member 58 includes a second threaded portion 62 that threads onto the first threaded portion 60 . The adjusting mechanism 22 adjusts the biasing force of the biasing member 50 by the amount of screwing of the second threaded portion 62 into the first threaded portion 60 . Therefore, the rotation device 10 can be configured simply.

As shown in FIG. 9 , the first threaded portion 60 is provided at the end of the second rotating body 20 opposite to the receiving portion 56 in the rotation axis direction X. As shown in FIG. As shown in FIG. 5 , the second threaded portion 62 is provided on a moving member 58 that is separate from the second rotating body 20 . The moving member 58 is, for example, a nut. As shown in FIG. 5, the adjusting mechanism 22 further includes a moving mechanism 64 that moves the moving member 58. As shown in FIG. Therefore, the moving member 58 can be easily moved. The moving mechanism 64 includes a driving portion 66 that rotates the moving member 58 . Therefore, the moving member 58 can be easily rotated. Drive 66 includes an electric motor 68 . Therefore, the mechanical configuration of the driving section 66 can be simplified. Simple configuration. The moving mechanism 64 includes a speed change section 70 that changes the speed of rotation of the electric motor 68 and transmits it to the moving member 58 . Therefore, the rotation of the electric motor 68 can be suitably transmitted to the moving member 58 . An electric motor 68 is secured to the cover 38 . An output shaft 68A of the electric motor 68 extends through a through hole provided in the retainer 48. As shown in FIG. As a result, the end of the output shaft 68A is arranged closer to the hub shell H2 than the brake operating mechanism 36 in the rotation axis direction X. As shown in FIG. The transmission unit 70 decelerates the rotation of the electric motor 68 and transmits it to the moving member 58 . The transmission unit 70 includes a first gear 70A and a second gear 70B. The first gear 70A is connected to the output shaft 68A of the electric motor 68. As shown in FIG. The second gear 70B is provided so as to mesh with the first gear 70A. The second gear 70B is a gear with a larger diameter than the first gear 70A. The second gear 70B is coupled with the moving member 58. As shown in FIG.

The detection unit 24 (see FIG. 2) detects the load on the support shaft H1, the load on the front fork A6 (see FIG. 1) of the manpowered vehicle A, the load on the saddle A7 on the manpowered vehicle A, and the load on the support shaft H1. and a load on the handlebar A2 of the manpowered vehicle A. Therefore, various loads on the support shaft H1 can be detected. The detector 24 is a load sensor. In the illustrated example, the detector 24 is attached to the support shaft H1 so as to detect the load on the support shaft H1. The detection unit 24 is communicably connected to the control unit 26 by wire or wirelessly. The detection unit 24 transmits to the control unit 26 a signal corresponding to the detected load on the support shaft H1.

The control unit 26 (see FIG. 2) adjusts the screwing amount of the second threaded portion 62 to the first threaded portion 60 by controlling the electric motor 68 . When the output shaft 68A of the electric motor 68 rotates in the first direction, the rotation of the electric motor 68 is transmitted to the moving member 58 via the transmission portion 70, and the screwing amount of the second threaded portion 62 to the first threaded portion 60 is becomes larger. As the amount of screwing of the second threaded portion 62 into the first threaded portion 60 increases, the biasing force of the biasing member 50 increases. That is, the frictional force between the first member 14 and the second member 16 increases. On the other hand, when the output shaft 68A of the electric motor 68 rotates in the second direction, the rotation of the electric motor 68 is transmitted to the moving member 58 via the speed changer 70, causing the second threaded portion 62 to rotate to the first threaded portion 60. Less screwing. As the amount of screwing of the second threaded portion 62 into the first threaded portion 60 decreases, the biasing force of the biasing member 50 decreases. That is, the frictional force between the first member 14 and the second member 16 is reduced. In one example, the control unit 26 controls the electric motor 68 such that the amount of screwing of the second threaded portion 62 into the first threaded portion 60 increases as the load on the support shaft H1 detected by the detecting portion 24 increases. do. In other words, the control unit 26 controls the electric motor 68 such that the greater the load on the support shaft H1, the greater the frictional force between the first member 14 and the second member 16 . Since the first member 14 and the second member 16 are less likely to move relative to each other, the capacity of the clutch mechanism 18 is increased, and the first rotor 12 and the second rotor 20 are less likely to rotate relative to each other. In one example, the control unit 26 controls the electric motor 68 such that the smaller the load on the spindle H1 detected by the detection unit 24, the smaller the screwing amount of the second threaded portion 62 into the first threaded portion 60. do. In other words, the control unit 26 controls the electric motor 68 such that the smaller the load on the support shaft H1, the smaller the frictional force between the first member 14 and the second member 16 . Since the first member 14 and the second member 16 are likely to move relative to each other, the capacity of the clutch mechanism 18 is reduced, and the relative rotation between the first rotating body 12 and the second rotating body 20 is facilitated.

According to the rotating device 10 of the first embodiment, the following actions and effects are obtained.
The rotating device 10 can suitably adjust the pressing force between the first member 14 and the second member 16 by the adjusting mechanism 22 that operates according to the load on the support shaft H1.

(Second embodiment)
A rotating device 10 according to the second embodiment will be described with reference to FIG. 10 . About the rotation device 10 of 2nd Embodiment, the code|symbol same as 1st Embodiment is attached|subjected about the structure which is common in 1st Embodiment, and the overlapping description is abbreviate|omitted.

The rotating device 10 includes a first rotating body 12 rotatably provided on a support shaft H1, a first member 14 provided on the first rotating body 12, and a second member 16 pressed by the first member 14. A clutch mechanism 18 and a second member 16 are provided. A second rotating body 20 is connected to the first rotating body 12 via the clutch mechanism 18, and the first member 14 and the second rotating body 20 are connected according to the load on the support shaft H1. and an adjusting mechanism 22 that adjusts the pressing force between the member 16 and the member 16 . The first rotating body 12 and the second rotating body 20 are provided on a hub shell H2 that is rotatably supported by a frame A5 (see FIG. 1) of the manpowered vehicle A. As shown in FIG. The rotating device 10 preferably further includes an elastic deformation member 13 that biases the first rotating body 12 away from the second rotating body 20 . The elastic deformation member 13 is provided between the first rotor 12 and the second rotor 20 . The elastic deformation member 13 is, for example, a spring.

The clutch mechanism 18 rotates the first rotating body 12 and the second rotating body 20 so as to allow relative rotation between the first rotating body 12 and the second rotating body 20 according to the relative rotating force generated between the first rotating body 12 and the second rotating body 20 . The body 12 and the second rotating body 20 are connected. The clutch mechanism 18 is provided between the inner peripheral portion of the first rotating body 12 and the outer peripheral portion of the second rotating body 20 .

The first member 14 is non-rotatably provided on the first rotor 12 . The second member 16 is non-rotatably provided on the second rotor 20 . In this embodiment, clutch mechanism 18 includes six first members 14 and six second members 16 . Preferably, the number of first members 14 and the number of second members 16 are equal. The first member 14 has a disk shape. The second member 16 has a disk shape. The first members 14 and the second members 16 are alternately superimposed.

The first member 14 is provided on the inner circumference of the first rotor 12 . The second member 16 is provided on the outer peripheral portion of the second rotating body 20 . The inner peripheral portion of the first rotor 12 is spline-fitted with the first member 14 . The inner peripheral portion of the second member 16 is spline-fitted with the outer peripheral portion of the second rotating body 20 .

Clutch mechanism 18 includes a biasing member 50 that biases first member 14 and second member 16 toward each other. The biasing member 50 is, for example, a disc spring. The biasing member 50 includes a first biasing member 50A and a second biasing member 50B. The first biasing member 50A is provided on one side of the support shaft H1 in the rotation axis direction X. As shown in FIG. The second biasing member 50B is provided on the other side of the support shaft H1 in the rotation axis direction X. As shown in FIG.

At least one of the first rotating body 12 and the second rotating body 20 has a receiving portion 56 that receives the biasing force of the biasing member 50 via the first member 14 and the second member 16 . In the illustrated example, the receiving portion 56 is provided on the second rotating body 20 . The plurality of first members 14 and the plurality of second members 16 are sandwiched between the biasing member 50 and the receiving portion 56 .

The adjusting mechanism 22 adjusts the biasing force of the biasing member 50 . The adjustment mechanism 22 includes a displacement portion 72 , a first moving member 74 and a second moving member 76 . The displacement portion 72 protrudes from the inner peripheral portion 12B of the first rotating body 12 toward the support shaft H1. The displacement portion 72 has a tapered shape that tapers from the inner peripheral portion 12B of the first rotating body 12 toward the support shaft H1. The displacement portion 72 is displaced so that the distal end face 72A approaches the spindle H1 as the load on the spindle H1 increases.

As the displacement portion 72 is displaced, the first moving member 74 and the second moving member 76 move in the rotation axis direction X of the support shaft H1, whereby the biasing member 50 is applied to the first member 14 and the second member 16. Adjust the biasing force. The first moving member 74 is coupled with the first biasing member 50A. The first moving member 74 has a tapered surface 74A that inclines from one side of the support shaft H1 toward the center. 74 A of taper surfaces contact the displacement part 72. As shown in FIG. The second moving member 76 is coupled with the second biasing member 50B. The second moving member 76 has a tapered surface 76A that inclines from the other side of the support shaft H1 toward the center. The tapered surface 76A contacts the displacement portion 72. As shown in FIG.

The action of the rotating device 10 of the second embodiment will be described.
When a load exceeding the biasing force of the elastic deformation member 13 acts on the support shaft H1, the distal end surface 72A of the displacement portion 72 is displaced to approach the support shaft H1. In the process in which the distal end surface 72A of the displacement portion 72 approaches the spindle H1, the first moving member 74 and the second moving member 76 are pushed by the displacement portion 72 and move in the rotation axis direction X of the spindle H1. The first moving member 74 moves in the rotation axis direction X to one side of the support shaft H1. The second moving member 76 moves in the rotation axis direction X to the other side of the support shaft H1. The greater the load on the support shaft H1, in other words, the closer the distal end surface 72A of the displacement portion 72 is to the support shaft H1, the greater the amount of movement of the first moving member 74 and the second moving member 76 in the rotation axis direction X. Become. Therefore, the biasing force of the biasing member 50 increases, and the frictional force between the first member 14 and the second member 16 increases. Since the first member 14 and the second member 16 are less likely to move relative to each other, the capacity of the clutch mechanism 18 is increased, and the first rotor 12 and the second rotor 20 are less likely to rotate relative to each other. On the other hand, the amount of movement of the first moving member 74 and the second moving member 76 in the rotation axis direction X increases as the load on the support shaft H1 decreases, in other words, as the distal end surface 72A of the displacement portion 72 moves away from the support shaft H1. becomes smaller. Therefore, the biasing force of the biasing member 50 is reduced, and the frictional force between the first member 14 and the second member 16 is reduced. Since the first member 14 and the second member 16 are likely to move relative to each other, the capacity of the clutch mechanism 18 is reduced, and the relative rotation between the first rotating body 12 and the second rotating body 20 is facilitated.

(Modification)
The above-described embodiments are examples of possible forms of the rotating device for a manpowered vehicle according to the present invention, and are not intended to limit the forms. The manpowered vehicle rotation device according to the present invention may take a form different from the form illustrated in the embodiment. One example is a form in which part of the configuration of the embodiment is replaced, changed, or omitted, or a form in which a new configuration is added to the embodiment. An example of a modification of the embodiment is shown below.

- The structure of the 1st rotating body 12 can be changed arbitrarily. In one example, the first rotating body 12 includes a receiving portion 56 . In this case, the first rotating body 12 has a convex portion that protrudes radially inward, and the receiving portion 56 is provided on this convex portion.

- The structure of the 1st screw part 60 can be changed arbitrarily. In one example, the first threaded portion 60 is provided at an arbitrary location on the first rotating body 12 . The arbitrary location is, for example, the inner peripheral portion 12B of the first rotor 12 . In this case, the second threaded portion 62 is provided on the outer peripheral portion of the adjusting mechanism 22 .

- The arrangement position of the biasing member 50 can be changed arbitrarily. In one example, the biasing member 50 is arranged on the hub H side with respect to the clutch mechanism 18 in the rotation axis direction X of the first rotating body 12 . In this case, the receiving portion 56 is preferably arranged on the side opposite to the hub H with respect to the clutch mechanism 18 in the rotation axis direction X of the first rotating body 12 .
- The brake mechanism with which the rotation apparatus 10 is provided can be selected arbitrarily. In one example, the rotating device 10 comprises a handbrake mechanism or a servebrake mechanism.

DESCRIPTION OF SYMBOLS 10... Rotating device 12... First rotating body 14... First member 16... Second member 18... Clutch mechanism 20... Second rotating body 22... Adjusting mechanism 24... Detector 26... Control part , 28... Bracket 30... Drum brake mechanism 50... Biasing member 58... Moving member 60... First screw part 62... Second screw part 64... Moving mechanism 66... Driving part 68... Electric motor , 70 . . . transmission unit.

Claims (18)

A rotating device for a manpowered vehicle that brakes a first rotating body,
the first rotating body rotatably provided on the support shaft;
a clutch mechanism including a first member provided on the first rotating body and a second member pressed by the first member;
a second rotating body provided with the second member and coupled to the first rotating body via the clutch mechanism;
an adjustment mechanism that adjusts the pressing force between the first member and the second member;
The pushing force according to at least one of the load on the support shaft, the load on the front fork of the manpowered vehicle, the load on the saddle of the manpowered vehicle, and the load on the handlebar of the manpowered vehicle. and a control section that changes the easiness of relative rotation between the first rotating body and the second rotating body by the clutch mechanism by adjusting pressure. 2. The manpowered vehicle rotation apparatus according to claim 1, wherein said clutch mechanism includes a biasing member biasing said first member and said second member toward each other. 3. The rotating device for a manpowered vehicle according to claim 2, wherein said adjusting mechanism adjusts the biasing force of said biasing member. 4. The manpower drive according to claim 3, wherein said adjustment mechanism includes a moving member that adjusts the biasing force of said biasing member with respect to said first member and said second member by moving in the axial direction of said support shaft. Car rotating device. at least one of the first rotating body and the second rotating body includes a first threaded portion;
the moving member includes a second threaded portion that is screwed into the first threaded portion;
5. The rotating device for a manpowered vehicle according to claim 4, wherein said adjusting mechanism adjusts the biasing force of said biasing member according to the amount of screwing of said second threaded portion into said first threaded portion. 6. The rotating device for a manpowered vehicle according to claim 4, wherein said adjusting mechanism further includes a moving mechanism for moving said moving member. 7. The rotating device for a manpowered vehicle according to claim 6, wherein said moving mechanism includes a drive unit for rotating said moving member. a first rotating body rotatably provided on the support shaft;
a clutch mechanism including a first member provided on the first rotating body and a second member pressed by the first member;
a second rotating body provided with the second member and coupled to the first rotating body via the clutch mechanism;
the load on the support shaft, the load on the front fork of the manpowered vehicle, the load on the saddle of the manpowered vehicle, and the load on the handlebar of the manpowered vehicle. an adjusting mechanism that adjusts the pressing force between the member and the second member,
the clutch mechanism includes a biasing member that biases the first member and the second member toward each other;
The adjusting mechanism includes a moving member that adjusts the biasing force of the biasing member with respect to the first member and the second member by moving in the axial direction of the support shaft, and a moving mechanism that moves the moving member. including
at least one of the first rotating body and the second rotating body includes a first threaded portion;
The moving member includes a second threaded portion that is screwed into the first threaded portion, and a driving portion that rotates the moving member,
The adjusting mechanism adjusts the biasing force of the biasing member according to the amount of screwing of the second threaded portion into the first threaded portion. 8. The manpowered vehicle rotation apparatus of claim 7, wherein the drive includes an electric motor. 9. The manpowered vehicle rotation apparatus of claim 8, wherein the drive includes an electric motor. The pushing force according to at least one of the load on the support shaft, the load on the front fork of the manpowered vehicle, the load on the saddle of the manpowered vehicle, and the load on the handlebar of the manpowered vehicle. 11. The manpowered vehicle rotation apparatus of claim 10, further comprising a control that regulates pressure. to detect at least one of the load on the support shaft, the load on the front fork of the manpowered vehicle, the load on the saddle of the manpowered vehicle, and the load on the handlebar of the manpowered vehicle. 12. A manpowered vehicle rotation apparatus according to claim 9 or 11, further comprising a detector configured. 13. The rotation device for a manpowered vehicle according to claim 12, wherein said control section controls said electric motor based on the detection result of said detection section. 14. The rotating device for a manpowered vehicle according to any one of claims 9 to 13, wherein said moving mechanism includes a transmission unit for transmitting a speed of rotation of said electric motor to said moving member. The rotating device for a manpowered vehicle according to any one of claims 1 to 14, wherein said first rotating body and said second rotating body are provided on a hub shell rotatably supported by a frame of said manpowered vehicle. . further comprising a bracket fixed to the frame;
16. The manpowered vehicle rotation device according to claim 15, wherein the adjustment mechanism is provided on the bracket. 17. The rotating device for a manpowered vehicle according to claim 16, further comprising a drum brake mechanism provided between said bracket and said first rotating body. 18. The rotating device of a manpowered vehicle according to claim 16 or 17, wherein said bracket is configured to be attachable to a front fork of said frame.

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