Power generator and component for personally-driven vehicle

Abstract

To provide a power generator capable of suitably generating electric power, and a component for a personally-driven vehicle.SOLUTION: A power generator comprises a power generation part that is configured to generate electric power by magnetostrictive power generation. The power generation part includes an oscillation part having a magnetostrictive member, a plurality of coils for generating the electric power by oscillation of the oscillation part, and at least one magnetic flux generation part. The plurality of coils include a first coil and a second coil different from the first coil. A winding number per unit length of the first coil is different from a winding number per unit length of the second coil.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to components for power generating devices and human-powered vehicles. [Background technology]

[0002] Patent Document 1 discloses, for example, an example of a power generating device using a magnetostrictive material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2021-136826 Summary of the Invention [Problem to be solved by the invention]

[0004] One object of the present disclosure is to provide a power generating device and components for a human-powered vehicle that can generate electricity in a suitable manner. [Means for solving the problem]

[0005] A power generation device according to a first aspect of the present disclosure is a power generation device comprising a power generation unit configured to generate power by magnetostrictive power generation, the power generation unit including an oscillating part having a magnetostrictive member, a plurality of coils that generate power by oscillating the oscillating part, and at least one magnetic flux generating part, the plurality of coils including a first coil and a second coil different from the first coil, and the number of turns per unit length of the first coil different from the number of turns per unit length of the second coil. According to the power generating device of the first aspect, since it includes multiple coils with different numbers of turns per unit length, it is possible to arrange coils with an appropriate number of turns in the areas where each of the multiple coils is arranged, and therefore the power generating device can generate electricity appropriately.

[0006] In the power generating device of the second aspect according to the first aspect of the present disclosure, the power generating device further includes a plurality of rectifier circuits, the plurality of rectifier circuits including a first rectifier circuit and a second rectifier circuit, the first coil is connected to the first rectifier circuit, and the second coil is connected to the second rectifier circuit. According to the power generating device of the second aspect, each of the plurality of coils is connected to a different rectifier circuit, so that the electric power generated from each of the plurality of coils can be suitably rectified.

[0007] The power generating device of the third aspect according to the first aspect of the present disclosure further includes a rectifier circuit, and the plurality of coils are connected to the rectifier circuit. According to the rectifier circuit of the third aspect, all of the multiple coils can be connected to one rectifier circuit, thereby suppressing an increase in the number of components.

[0008] In the power generating device of the fourth aspect according to the first aspect of the present disclosure, at least one of the plurality of coils is provided on the swinging portion. According to the power generating device of the fourth aspect, at least one of the coils provided on the oscillating section oscillates together with the oscillating section, and therefore the power generating section can generate electricity suitably by the oscillation of the oscillating section.

[0009] In the power generating device of the fifth aspect according to the fourth aspect of the present disclosure, a support part extending in a first direction and supporting the oscillating part so that the oscillating part can oscillate is further provided, and the oscillating part includes a first oscillating part end supported by the support part and a second oscillating part end opposite the first oscillating part end. According to the power generating device of the fifth aspect, the swinging portion is suitably supported by the support portion extending in the first direction.

[0010] In the power generating device of the sixth aspect according to the fifth aspect of the present disclosure, the first coil and the second coil are provided on the oscillating part, and the first coil is arranged closer to the end of the first oscillating part than the second coil. According to the power generating device of the sixth aspect, the first coil and the second coil are provided on the swinging part, so that the first coil and the second coil swing together with the swinging part, and therefore the power generating part can generate electricity more efficiently by the swinging of the swinging part.

[0011] In the power generating device of the seventh aspect according to the sixth aspect of the present disclosure, the number of turns per unit length of the first coil is greater than the number of turns per unit length of the second coil. According to the power generating device of the seventh aspect, a first coil having a larger number of turns per unit length than the second coil is provided closer to the first oscillating part end than the second coil of the oscillating part. The closer to the first oscillating part end, which is the end supported by the support part, the larger the bending moment when the oscillating part oscillates. The larger the bending moment, the higher the inverse magnetostriction effect, and therefore the higher the power generating efficiency of the coil. Therefore, the power generating device can generate electricity effectively.

[0012] In the power generating device of the eighth aspect according to the fifth aspect of the present disclosure, at least one of the plurality of coils has a greater number of turns per unit length as it approaches the end of the first swinging part. According to the power generating device of the eighth aspect, at least one of the plurality of coils has a greater number of turns per unit length the closer it is to the end of the first oscillation part, so that the power generating device can improve power generation efficiency.

[0013] In the power generating device of the ninth aspect according to the fifth aspect of the present disclosure, the at least one magnetic flux generating section includes a plurality of magnetic flux generating sections. According to the power generating device of the ninth aspect, since the power generating device includes a plurality of magnetic flux generating sections, the power generating device can improve power generation efficiency.

[0014] In a power generating device of a tenth aspect according to the ninth aspect of the present disclosure, the plurality of magnetic flux generating units include a first magnetic flux generating unit and a second magnetic flux generating unit different from the first magnetic flux generating unit, the first magnetic flux generating unit being arranged closer to the end of the first oscillating unit than the second magnetic flux generating unit, and the second magnetic flux generating unit being arranged closer to the end of the second oscillating unit than the first magnetic flux generating unit. According to the power generating device of the tenth aspect, the first magnetic flux generating section and the second magnetic flux generating section can be disposed at the first oscillating section end side and the second oscillating section end side, respectively, of the oscillating section, thereby enabling a suitable magnetic field to be formed between the first magnetic flux generating section and the second magnetic flux generating section and at least one coil provided on the oscillating section.

[0015] In the power generating device of the eleventh aspect according to the fifth aspect of the present disclosure, the power generating device further includes a magnetic flux generating unit holding portion extending in a second direction intersecting the first direction and on which the at least one magnetic flux generating unit is provided, the first coil and the second coil are provided on the oscillating portion, and the at least one magnetic flux generating unit includes a first magnetic flux generating unit arranged at a position corresponding to the first coil in the magnetic flux generating unit holding portion, and a second magnetic flux generating unit arranged at a position corresponding to the second coil in the magnetic flux generating unit holding portion and different from the first magnetic flux generating unit. According to the power generating device of the eleventh aspect, the first coil can generate electricity effectively using the magnetic flux from the first magnetic flux generating section, and the second coil can generate electricity effectively using the magnetic flux from the second magnetic flux generating section.

[0016] In the power generating device of the twelfth aspect according to the eleventh aspect of the present disclosure, the magnetic flux generator holding portion includes a first holding portion end portion located on the support portion side and a second holding portion end portion farther from the support portion than the first holding portion end portion, and the first magnetic flux generator is provided at the first holding portion end portion and the second magnetic flux generator is provided at the second holding portion end portion. According to the power generating device of the twelfth aspect, the first coil can generate electricity favorably using magnetic flux from the first magnetic flux generating unit provided at the end of the first holding unit, and the second coil can generate electricity favorably using magnetic flux from the second magnetic flux generating unit provided at the end of the second holding unit.

[0017] In the power generating device of the thirteenth aspect according to the eleventh aspect of the present disclosure, the magnetic flux generator holding portion is separate from the support portion. According to the power generating device of the thirteenth aspect, at least one magnetic flux generating portion can be supported by a magnetic flux generating portion separate from the support portion.

[0018] In a power generating device of a fourteenth aspect according to the tenth aspect of the present disclosure, the power generating device comprises a magnetic flux generating unit holding portion extending in a second direction intersecting the first direction and on which the second magnetic flux generating unit is provided, and an extension portion provided on the opposite side of the oscillating unit in the second direction, sandwiching the support portion therebetween, wherein the first magnetic flux generating unit is provided on the opposite side of the oscillating unit from the support portion in the second direction, the extension portion extends toward the first magnetic flux generating unit, and a gap is formed between the extension portion and the first magnetic flux generating unit. According to the power generating device of the fourteenth aspect, the extension portion can be prevented from contacting the second magnetic flux generating portion.

[0019] In the power generating device of the fifteenth aspect according to the ninth aspect of the present disclosure, one of the plurality of magnetic flux generating portions is disposed at a position corresponding to a space between two adjacent ones of the plurality of coils. According to the power generating device of the fifteenth aspect, the magnetic flux generating section is disposed at a position corresponding to the space between two adjacent coils among the plurality of coils, so that the plurality of coils can generate power in an appropriate manner.

[0020] In the power generating device of a sixteenth aspect according to the first aspect of the present disclosure, the at least one magnetic flux generating portion includes a permanent magnet. According to the power generating device of the sixteenth aspect, the plurality of coils can generate electricity suitably by using permanent magnets.

[0021] The power generating device of the seventeenth aspect according to the fourth aspect of the present disclosure further comprises a support part extending in a first direction and supporting the oscillating part so that the oscillating part can oscillate, a magnetic flux generating part holding part extending in a second direction intersecting the first direction and on which the at least one magnetic flux generating part is provided, and an additional coil that generates power by the oscillation of the oscillating part, the additional coil being provided on at least one of the support part and the magnetic flux generating part holding part. According to the power generating device of the seventeenth aspect, power can be generated by an additional coil in addition to the plurality of coils, thereby further improving the power generating efficiency of the power generating device.

[0022] In the power generating device of the eighteenth aspect according to the seventeenth aspect of the present disclosure, the additional coil is provided in the magnetic flux generator holder. According to the power generating device of the eighteenth aspect, power can be generated by a plurality of coils provided in the swinging section and an additional coil provided in the magnetic flux generating section holding section.

[0023] The power generating device of a nineteenth aspect according to the first aspect of the present disclosure further includes an operation unit operable by a user, and the swinging unit is configured to swing when the user operates the operation unit. According to the power generating device of the nineteenth aspect, the power generating unit can generate power in response to an operation on the operating unit by a user.

[0024] A component of a twentieth aspect of the present disclosure is a component for a human-powered vehicle, comprising: a power generation device described in any one of the first to nineteenth aspects; a transmitter configured to transmit a predetermined signal to other components using power generated by the power generation device; and a control unit configured to control the transmitter to transmit the predetermined signal. According to the component of the twentieth aspect, the control unit can transmit a predetermined signal to another component via the transmission unit using the power generated by the power generation device.

[0025] The component of the twenty-first aspect according to the twentieth aspect of the present disclosure further includes an operating device configured to operate the other component. According to the component of the twenty-first aspect, the control unit can transmit a predetermined signal from the operating device to another component using the power generated by the power generation device.

[0026] In the component of the 22nd aspect according to the 20th aspect of the present disclosure, the component includes a crank arm of the human-powered vehicle, and the power generating device further includes a swing imparting unit provided on the crank arm that swings the swing unit by magnetic force, and the swing imparting unit is provided on a pedal of the human-powered vehicle. According to the component of the twenty-second aspect, the power generating device can generate electricity suitably by means of the oscillation imparting portion provided on the pedal.

[0027] The component of the twenty-third aspect according to the twentieth aspect of the present disclosure further includes a housing that houses at least a portion of the power generating device, and the transmitter is disposed on an outer surface of the housing. According to the component of the twenty-third aspect, the transmitter is disposed on the outer surface of the housing, so that the predetermined signal can be suitably transmitted to other components. [Effects of the Invention]

[0028] The power generation device and components for human-powered vehicles of the present disclosure are suitable for generating electricity. [Brief explanation of the drawings]

[0029] [Figure 1] 1 is a side view of a human-powered vehicle including a power generating device according to a first embodiment and components for the human-powered vehicle. [Figure 2] FIG. 2 is a perspective view of a component for a human-powered vehicle including the power generating device of FIG. 1. [Figure 3] 3 is a plan view of the power generating device and the components for the human-powered vehicle of FIG. 2, with the cover portion omitted. [Figure 4] 4 is a cross-sectional view of the power generating device and components for the human-powered vehicle taken along line D4-D4 in FIG. 3. [Figure 5] FIG. 4 is a perspective view of the power generating device of FIG. 3. [Figure 6] FIG. 3 is an electrical circuit diagram showing the electrical configuration of the power generation device and components for the human-powered vehicle of FIG. 2. [Figure 7] FIG. 10 is a plan view of a power generating device and a component for a human-powered vehicle according to a second embodiment, with the cover omitted. [Figure 8] FIG. 10 is a schematic diagram showing the arrangement of coils and magnetic flux generators of components for a power generator and a human-powered vehicle according to a third embodiment. [Figure 9] FIG. 10 is a plan view of a power generating device and a component for a human-powered vehicle according to a fourth embodiment, with the cover omitted. [Figure 10]FIG. 10 is a schematic diagram showing a part of a crank arm and a pedal according to a fifth embodiment. [Figure 11] FIG. 10 is an electrical circuit diagram showing the electrical configuration of a power generation device and components for a human-powered vehicle according to a modified example. [Figure 12] FIG. 10 is a plan view of a modified example of a power generation device and a component for a human-powered vehicle, with the cover portion omitted. [Figure 13] 10 is a schematic diagram showing the arrangement of coils and magnetic flux generators of components for a power generating device and a human-powered vehicle according to a modified example. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0030] First Embodiment A power generation device 70 and a component 50 for a human-powered vehicle according to a first embodiment will be described with reference to FIGS. 1 to 6. FIG.

[0031] The human-powered vehicle 10 is a vehicle that has at least one wheel and can be propelled at least by human driving force. The human-powered vehicle 10 includes various types of bicycles, such as mountain bikes, road bikes, city bikes, cargo bikes, hand bikes, and recumbent bikes. There is no limit to the number of wheels the human-powered vehicle 10 has. The human-powered vehicle 10 also includes, for example, one-wheeled vehicles and vehicles with two or more wheels. The human-powered vehicle 10 is not limited to vehicles that can be propelled solely by human driving force. The human-powered vehicle 10 also includes E-bikes that use not only human driving force but also the driving force of an electric motor for propulsion. E-bikes include electrically assisted bicycles whose propulsion is assisted by an electric motor. In the following embodiments, the human-powered vehicle 10 will be described as an electrically assisted bicycle.

[0032] In this specification, the following directional terms "front," "rear," "forward," "backward," "left," "right," "sideways," "upward," and "downward," as well as any other similar directional terms, refer to those directions determined with reference to a rider facing the handlebars in a reference position on the human-powered vehicle (e.g., on a saddle or seat).

[0033] As shown in FIG. 1 , the human-powered vehicle 10 includes, for example, a body 12 and wheels 14. The wheels 14 include, for example, front wheels 14F and rear wheels 14R. The rear wheels 14R are drive wheels of the human-powered vehicle 10. The front wheels 14F are driven wheels of the human-powered vehicle 10. The front wheels 14F may also be drive wheels of the human-powered vehicle 10. When the front wheels 14F are drive wheels of the human-powered vehicle 10, the rear wheels 14R are driven wheels of the human-powered vehicle 10.

[0034] The vehicle body 12 includes, for example, a frame 16. A saddle 16A is attached to the frame 16. The human-powered vehicle 10 includes, for example, a crank 18 to which human-powered driving force is input. The crank 18 includes, for example, a crankshaft 20 that is rotatable relative to the frame 16, and crank arms 22A, 22B that are respectively provided at the axial ends of the crankshaft 20. Pedals 24A, 24B are connected to the crank arms 22A, 22B, respectively. The drive wheels are driven, for example, by the rotation of the crank 18. The rear wheel 14R is supported, for example, by the frame 16.

[0035] The crank 18 is connected to a drive wheel by, for example, a drive mechanism 26. The drive mechanism 26 includes, for example, a first rotor 28 connected to the crankshaft 20. The crankshaft 20 may be connected to the first rotor 28 so as to rotate integrally with it, or may be connected to it via a first one-way clutch. The first one-way clutch is configured, for example, to rotate the first rotor 28 forward when the crankshaft 20 rotates forward. The first one-way clutch is configured, for example, to allow relative rotation between the crankshaft 20 and the first rotor 28 when the crankshaft 20 rotates backward. The first rotor 28 includes, for example, a sprocket, a pulley, or a bevel gear.

[0036] The drive mechanism 26 further includes, for example, a second rotating body 30 and a connecting member 32. The connecting member 32 transmits the rotational force of the first rotating body 28 to the second rotating body 30. The connecting member 32 includes, for example, a chain, a belt, or a shaft.

[0037] The second rotating body 30 is coupled to, for example, a drive wheel. The second rotating body 30 includes, for example, a sprocket, a pulley, or a bevel gear. In the power transmission path of the human-powered driving force, a second one-way clutch is provided between the second rotating body 30 and the drive wheel. The second one-way clutch is configured, for example, to rotate the drive wheel forward when the second rotating body 30 rotates forward. The second one-way clutch is configured, for example, to allow relative rotation between the second rotating body 30 and the drive wheel when the second rotating body 30 rotates backward.

[0038] A front wheel 14F is attached to the frame 16 via, for example, a front fork 34. A handlebar 38 is connected to the front fork 34 via a stem 36. In this embodiment, the rear wheel 14R is connected to the crank 18 by a drive mechanism 26. At least one of the front wheel 14F and the rear wheel 14R may be connected to the crank 18 by the drive mechanism 26.

[0039] The human-powered vehicle 10 includes, for example, other components 40. The other components 40 include, for example, at least one of a transmission 40A, an adjustable seat post 40B, a suspension 40C, a drive unit 40D, a braking device 40E, and a ramp 40F.

[0040] The transmission 40A is configured to be able to change the gear ratio of the human-powered vehicle 10 according to the number of gears. The gear ratio of the human-powered vehicle 10 is, for example, the ratio of the rotational speed of the rear wheel 14R to the rotational speed of the crank 18. The transmission 40A includes, for example, an external derailleur. The external derailleur is provided, for example, on the frame 16. The external derailleur includes, for example, a rear derailleur. The external derailleur may include a front derailleur. The transmission 40A may include an internal derailleur. The internal derailleur is provided, for example, on the hub of the rear wheel 14R. The internal derailleur may be provided on the hub of the front wheel 14F.

[0041] The transmission 40A includes, for example, an electric transmission. The transmission 40A includes, for example, an actuator that operates by electricity. The actuator of the transmission 40A is configured to be able to change the gear ratio of the human-powered vehicle 10 in response to, for example, an operation signal.

[0042] The adjustable seat post 40B is configured to be able to change the height of the saddle 16A relative to the frame 16. The adjustable seat post 40B is provided, for example, on the frame 16. The adjustable seat post 40B includes, for example, an electrically adjustable seat post. The adjustable seat post 40B includes, for example, an actuator that operates by electricity. The actuator of the adjustable seat post 40B is configured, for example, to be able to change the height of the saddle 16A relative to the frame 16 in response to an operation signal.

[0043] The suspension 40C is configured to absorb shocks applied to at least one of the rear wheel 14R and the front wheel 14F. The suspension 40C is provided, for example, on the frame 16. The suspension 40C may also be provided on the front fork 34.

[0044] The suspension 40C may be a coil suspension, a hydraulic suspension, or an air suspension. The suspension 40C may include, for example, at least one of a rear suspension provided on the frame 16 and a front suspension provided on the front fork 34.

[0045] The suspension 40C includes a first portion and a second portion fitted into the first portion. The first portion of the suspension 40C is connected to, for example, the axle of the rear wheel 14R or the front wheel 14F. The second portion of the suspension 40C is connected to, for example, the frame 16. The second portion of the suspension 40C moves relative to the first portion of the suspension 40C, thereby absorbing impacts applied to at least one of the front wheel 14F and the rear wheel 14R.

[0046] The suspension 40C includes, for example, an electric suspension. The suspension 40C includes, for example, an actuator that operates by electricity. The actuator of the suspension 40C is configured to be able to change the amount of relative movement between the first portion and the second portion in response to an operation signal, for example.

[0047] The drive unit 40D is configured to provide a propulsive force to the human-powered vehicle 10. The drive unit 40D is mounted on the frame 16, for example. The drive unit 40D includes, for example, an actuator that operates by electricity. The actuator of the drive unit 40D includes, for example, a motor. The actuator of the drive unit 40D is configured to be able to change the ratio of the motor driving force to the human-powered driving force, for example, in response to an operation signal. The drive unit 40D is configured to output the motor driving force in response to the human-powered driving force input to the crank 18, for example.

[0048] The braking device 40E is configured to brake the propulsion of the human-powered vehicle 10. The braking device 40E is provided, for example, on the frame 16. The braking device 40E includes, for example, a rear brake and a front brake. The braking device 40E includes, for example, an electric braking device. The braking device 40E includes, for example, an actuator that operates by electricity. The actuator of the braking device 40E is configured, for example, to be able to change the braking force applied to the human-powered vehicle 10 in response to an operation signal.

[0049] The lamps 40F include, for example, front lamps. The front lamps are attached to the human-powered vehicle 10 so as to illuminate the area ahead of the human-powered vehicle 10. The lamps 40F may also include rear lamps. The rear lamps are attached to the human-powered vehicle 10 so as to illuminate the area behind the human-powered vehicle 10. The lamps 40F include, for example, light sources that are lit by electricity. The lamps 40F are configured so that the lighting state of the light sources can be changed in response to an operation signal, for example.

[0050] 2 is provided on the human-powered vehicle 10 so as to be operable by, for example, a user. The user includes, for example, a rider of the human-powered vehicle 10. The user may also include a mechanic who performs maintenance on the human-powered vehicle 10. The component 50 includes, for example, an operating device 50A configured to operate the other components 40.

[0051] The component 50 includes, for example, a housing 52. The housing 52 is formed, for example, in a substantially rectangular parallelepiped shape. The housing 52 may have a shape other than a rectangular parallelepiped. The housing 52 may have a cylindrical shape, for example. The shape of the housing 52 can be changed as appropriate.

[0052] The housing 52 is attached to, for example, the handlebar 38 shown in Fig. 1. The housing 52 may be attached to a portion of the human-powered vehicle 10 around the handlebar 38, or may be attached to the frame 16. The housing 52 may also be built into the frame 16.

[0053] 2 to 4, the housing 52 includes, for example, a bottom portion 52A, a side wall portion 52B, and a lid portion 52C. The bottom portion 52A, the side wall portion 52B, and the lid portion 52C each have, for example, a plate-shaped member. The bottom portion 52A and the side wall portion 52B are, for example, integrally formed.

[0054] The lid portion 52C is disposed, for example, so as to face the bottom portion 52A. The lid portion 52C may be formed integrally with the bottom portion 52A and the side wall portion 52B, or may be formed so as to be detachable from the bottom portion 52A and the side wall portion 52B. The lid portion 52C is provided with, for example, a first through-hole 52D.

[0055] The short sides of the bottom 52A and the lid 52C extend, for example, along the first direction A1. The long sides of the bottom 52A, the side wall 52B, and the lid 52C extend, for example, along the second direction A2 that intersects with the first direction A1. The short sides of the side wall 52B extend, for example, along the third direction A3 that intersects with the first direction A1 and the second direction A2.

[0056] As shown in FIG. 4, the housing 52 includes, for example, a partition wall portion 52E. The partition wall portion 52E is disposed, for example, between the bottom portion 52A and the lid portion 52C in the third direction A3. The partition wall portion 52E has, for example, a plate-shaped member. The long sides of the partition wall portion 52E extend, for example, along the second direction A2. The short sides of the partition wall portion 52E extend, for example, along the first direction A1. In the second direction A2, one end portion 52F of the partition wall portion 52E is integrally formed with the side wall portion 52B. In the second direction A2, the other end portion 52G of the partition wall portion 52E does not contact the side wall portion 52B. The partition wall portion 52E is provided with, for example, at least one second through-hole 52H.

[0057] The housing 52 defines, for example, a first space S1, a second space S2, and a third space S3. The first space S1 is, for example, a space between the lid portion 52C and the partition portion 52E. The second space S2 is, for example, a space between the bottom portion 52A and the partition portion 52E. The third space S3 is, for example, a space formed inside the housing 52 at the other end 52G of the partition portion 52E. The third space S3 is, for example, a space formed between the bottom portion 52A and the lid portion 52C in the third direction A3. The third space S3 extends, for example, in the third direction A3. The third space S3 is, for example, connected to each of the first space S1 and the second space S2.

[0058] Component 50 includes, for example, an operation unit 92. Operation unit 92 can be operated by, for example, a user. When other component 40 includes transmission 40A, component 50 may include a first component including operation unit 92 for increasing the gear ratio, and a second component including operation unit 92 for decreasing the gear ratio. When other component 40 includes transmission 40A, component 50 may include operation unit 92 for increasing the gear ratio, and operation unit 92 for decreasing the gear ratio. When component 50 includes multiple operation units 92, component 50 may include power generation units 72 corresponding to each of the multiple operation units 92.

[0059] At least a portion of the operating unit 92 is exposed from the housing 52, for example. The operating unit 92 is exposed from the housing 52, for example, through a first through-hole 52D of the cover 52C. When the component 50 includes multiple operating units 92, multiple operating units 92 may be provided in one housing 52, or each of the multiple operating units 92 may be provided in a separate housing 52.

[0060] At least a portion of the operating unit 92 is disposed in the third space S3, for example. The operating unit 92 is disposed in the housing 52 so as to be movable in the third direction A3, for example. When a user operates the operating unit 92, for example, the operating unit 92 moves along the third direction A3. When a user presses the operating unit 92, for example, the operating unit 92 moves from the lid portion 52C toward the bottom portion 52A. The operating unit 92 is, for example, a switch button. The operating unit 92 may be configured to move along the third direction A3 when a user pulls the operating unit 92.

[0061] The component 50 includes, for example, an elastic member 54. The elastic member 54 is configured, for example, to bias the operating unit 92 from the bottom portion 52A toward the lid portion 52C. For example, when the operating unit 92 is not being operated by the user, the elastic member 54 biases the operating unit 92 so that the operating unit 92 is exposed from the housing 52. The elastic member 54 includes, for example, a compression coil spring. When the operating unit 92 is pressed by the user to move from the lid portion 52C toward the bottom portion 52A, and then the user releases their hand from the operating unit 92, the elastic member 54 moves the operating unit 92 from the bottom portion 52A toward the lid portion 52C.

[0062] 4 and 6, the component 50 for a human-powered vehicle includes, for example, a power generation device 70, a transmitter 56, and a control unit 58. The housing 52, for example, houses at least a portion of the power generation device 70. The transmitter 56 and the control unit 58 are configured to operate using electric power generated by the power generation device 70.

[0063] The transmitter 56 is configured to transmit a predetermined signal to the other component 40 using, for example, power generated by the power generation device 70. The transmitter 56 transmits the predetermined signal to the other component 40, for example, by wireless communication. The communication method between the component 50 and the other component 40 is not particularly limited. The communication method between the component 50 and the other component 40 includes, for example, Bluetooth (registered trademark), NFC (Near Field Communication), ANT (registered trademark), ANT+ (registered trademark), Wi-Fi (registered trademark), and mobile communication systems of various generations. The communication method between the component 50 and the other component 40 may be a proprietary communication standard.

[0064] The control unit 58 is configured to, for example, control the transmission unit 56 to transmit a predetermined signal. The control unit 58 includes, for example, an arithmetic processing unit that executes a predetermined control program. The arithmetic processing unit includes, for example, a central processing unit (CPU) or a micro processing unit (MPU). The control unit 58 may include one or more microcomputers. The control unit 58 may also include multiple arithmetic processing units that are separately disposed in multiple locations. The control unit 58 is configured, for example, to control the transmission unit 56 to output a predetermined signal to the other component 40 shown in FIG. 1 using power generated by the power generation device 70 when the operation unit 92 is operated.

[0065] The component 50 includes, for example, a circuit unit 60. The circuit unit 60 includes, for example, an electric board 60A. The electric board 60A is disposed, for example, in the second space S2 of the housing 52. The electric board 60A has, for example, a plate shape extending along the third direction A3. The electric board 60A is attached, for example, to the partition wall portion 52E. The circuit unit 60 may include a detection unit configured to be able to detect movement of the operation unit 92.

[0066] The transmitter 56 and the controller 58 are mounted on, for example, an electric board 60A. The transmitter 56 and the controller 58 may be mounted on different circuit boards. A storage unit may be mounted on the electric board 60A. The storage unit may include, for example, a non-volatile memory and a volatile memory.

[0067] The component 50 may include a power storage unit 62 shown in FIG. 6. The power storage unit 62 is configured to store power generated by the power generation device 70. The power storage unit 62 is provided on, for example, an electric board 60A. The power storage unit 62 includes, for example, a capacitor. The transmitter 56 and the control unit 58 may be supplied with power from the power generation device 70 via the power storage unit 62.

[0068] 3 to 5, the power generation device 70 includes a power generation unit 72 configured to generate power by, for example, magnetostrictive power generation. The power generation unit 72 is disposed, for example, in the first space S1 of the housing 52. The power generation unit 72 includes, for example, a swinging unit 74 having a magnetostrictive member 76, a plurality of coils 78 that generate power by swinging the swinging unit 74, and at least one magnetic flux generation unit 80.

[0069] The power generation device 70 further includes a support portion 82 that extends in the first direction A1, for example, and supports the swingable portion 74. The support portion 82 includes, for example, a yoke. The support portion 82 is attached to, for example, the housing 52. At least a portion of the support portion 82 is formed of, for example, a magnetic material. The magnetic material is, for example, soft magnetic steel. The support portion 82 is attached to, for example, the side wall portion 52B.

[0070] The oscillating portion 74 includes, for example, a first oscillating portion end portion 74A supported by the support portion 82 and a second oscillating portion end portion 74B opposite the first oscillating portion end portion 74A. The support portion 82 includes a first support portion 82A and a second support portion 82B. The first oscillating portion end portion 74A is disposed between the first support portion 82A and the second support portion 82B in the third direction A3. The support portion 82 supports the oscillating portion 74 so that the first oscillating portion end portion 74A is sandwiched between the first support portion 82A and the second support portion 82B. The oscillating portion 74 includes an attachment portion 74X to which the magnetostrictive member 76 is attached. The magnetostrictive member 76 is attached to the attachment portion 74X with an adhesive or the like.

[0071] The magnetostrictive member 76 is formed to include, for example, a magnetostrictive material. The magnetostrictive material is, for example, an Fe-Ga alloy. The magnetostrictive member 76 is provided on the swinging portion 74 so as to be swingable in, for example, the third direction A3. The magnetic permeability of the magnetostrictive member 76 changes as the magnetostrictive member 76 expands and contracts. The magnetization direction of the magnetostrictive member 76 changes as the magnetostrictive member 76 expands and contracts.

[0072] The magnetostrictive member 76 is formed, for example, in a plate shape. When viewed from the first direction A1, the magnetostrictive member 76, together with the attachment portion 74X, is supported by the support portion 82 by being sandwiched between the first support portion 82A and the second support portion 82B.

[0073] The power generating device 70 further includes a magnetic flux generator holding portion 84 that extends, for example, in a second direction A2 intersecting the first direction A1 and on which at least one magnetic flux generator 80 is provided. The magnetic flux generator holding portion 84 includes, for example, a yoke. The magnetic flux generator holding portion 84 is attached, for example, to the housing 52. At least a portion of the magnetic flux generator holding portion 84 is formed, for example, from a magnetic material. The magnetic flux generator holding portion 84 is attached, for example, to the side wall portion 52B. In this embodiment, the magnetic flux generator holding portion 84 is formed, for example, integrally with the support portion 82. The magnetic flux generator holding portion 84 is provided, for example, spaced apart from the oscillating portion 74 in the third direction A3.

[0074] The at least one magnetic flux generator 80, the support 82, and the magnetic flux generator holder 84 form, for example, a closed magnetic circuit M1 shown in FIG. 3 . The at least one magnetic flux generator 80 is disposed between the oscillating portion 74 and the magnetic flux generator holder 84 in the first direction A1. The at least one magnetic flux generator 80 can increase the magnetic flux density of the magnetic flux passing through the magnetostrictive member 76. Therefore, the power generator 70 can increase the power generation voltage of the power generator 70 by using the at least one magnetic flux generator 80. The at least one magnetic flux generator 80 includes, for example, a permanent magnet. The at least one magnetic flux generator 80 includes, for example, a permanent magnet. In this embodiment, all of the at least one magnetic flux generator 80 include, for example, permanent magnets. At least one of the magnetic flux generators 80 may include an electromagnet.

[0075] The magnetic flux generator holding portion 84 includes, for example, a first holding portion end 84A located on the support portion 82 side, and a second holding portion end 84B that is farther from the support portion 82 than the first holding portion end 84A. The first holding portion end 84A includes, for example, the end of the magnetic flux generator holding portion 84 on the support portion 82 side and the vicinity of the end of the magnetic flux generator holding portion 84 on the support portion 82 side. The second holding portion end 84B includes, for example, the end farther from the support portion 82 than the first holding portion end 84A and the vicinity of the end farther from the support portion 82 than the first holding portion end 84A.

[0076] In this embodiment, the at least one magnetic flux generation unit 80 includes one magnetic flux generation unit 80. In this embodiment, the magnetic flux generation unit 80 is arranged closer to the second holding portion end 84B of the magnetic flux generation unit holding unit 84 than to the first holding portion end 84A.

[0077] At least one of the multiple coils 78 is provided, for example, on the swinging portion 74. In this embodiment, all of the multiple coils 78 are provided on the swinging portion 74. At least one of the multiple coils 78 is formed, for example, by winding a coil wire around the swinging portion 74. At least one of the multiple coils 78 may be formed by winding a coil wire around a jig. When the multiple coils 78 are formed by winding a coil wire around a jig, the multiple coils 78 are fitted into the swinging portion 74, for example.

[0078] As shown in FIGS. 3 to 5, the number of turns per unit length of the multiple coils 78 increases as the coil 78 approaches the first oscillation portion end 74A. The number of turns per unit length of the multiple coils 78 decreases as the coil 78 approaches the second oscillation portion end 74B. The unit length of the coil 78 can be expressed as a predetermined length in the second direction A2. The number of turns per unit length of the coil 78 corresponds to the dimension of the coil 78 in the first direction A1. The dimension of the coil 78 in the second direction A2 may be the thickness from the center of the coil 78 to the outside in the radial direction of the coil 78. The greater the number of turns per unit length of the coil 78, the greater the dimension of the coil 78 in the third direction A3.

[0079] When the dimensions of all of the multiple coils 78 in the second direction A2 are the same, the unit length may be the dimension of the coil 78 in the second direction A2. When the unit length is the dimension of the coil 78 in the second direction A2, the number of turns per unit length may be the number of turns of the coil 78. The number of turns per unit length is expressed, for example, by the sum of the lengths of the electric wire included in the unit length. The number of turns per unit length is expressed, for example, by the number of cross sections of the electric wire included in the length corresponding to the unit length, of the cross section of the coil 78 along the second direction A2 and including the central axis of the coil 78.

[0080] In this embodiment, the dimensions of all of the multiple coils 78 in the second direction A2 are the same. In this embodiment, the number of turns of the multiple coils 78 increases as the multiple coils 78 are closer to the first oscillation portion end 74A. In this embodiment, the number of turns of the multiple coils 78 decreases as the multiple coils 78 are closer to the second oscillation portion end 74B.

[0081] The multiple coils 78 include, for example, a first coil 78A and a second coil 78B that is different from the first coil 78A. The first coil 78A is formed, for example, separately from the second coil 78B. The first coil 78A and the second coil 78B are provided on the swinging portion 74.

[0082] The number of turns per unit length of the first coil 78A is different from the number of turns per unit length of the second coil 78B, for example. The number of turns per unit length of the first coil 78A is greater than the number of turns per unit length of the second coil 78B, for example. The diameter of the first coil 78A is greater than the diameter of the second coil 78B, for example. In this embodiment, the dimensions of the first coil 78A and the second coil 78B in the second direction A2 are the same. In this embodiment, the number of turns of the first coil 78A is greater than the number of turns of the second coil 78B.

[0083] The first coil 78A and the second coil 78B are provided, for example, on the swinging portion 74. The first coil 78A is not in contact with the support portion 82, for example. The first coil 78A is provided on the swinging portion 74 at a distance from the second coil 78B.

[0084] The first coil 78A and the second coil 78B are preferably positioned closer to the first oscillation part end 74A than the second oscillation part end 74B. For example, the first coil 78A is positioned closer to the first oscillation part end 74A than the second coil 78B. For example, the first coil 78A is positioned closer to the support part 82 than the second coil 78B.

[0085] 4, two coil lead wires 78X are drawn out from each of the plurality of coils 78. The coil lead wires 78X electrically connect each of the plurality of coils 78 to the electric board 60A. The first coil 78A is connected to the electric board 60A by, for example, two first coil lead wires 78AX. The second coil 78B is connected to the electric board 60A by, for example, two second coil lead wires 78BX.

[0086] The power generation device 70 further includes, for example, a rectifier circuit 86 shown in FIG. 6. The power generated by the multiple coils 78 is rectified by the rectifier circuit 86. The rectifier circuit 86 is mounted on, for example, the electric board 60A. The rectifier circuit 86 includes, for example, a rectifier section 88 and a smoothing section 90. The rectifier circuit 86 in FIG. 6 is merely an example, and the rectifier circuit 86 may be in the form of, for example, a diode bridge full-wave rectifier circuit or a Cockcroft-Walton circuit.

[0087] The rectifier 88 includes, for example, a diode. The rectifier 88 is disposed, for example, in the power supply path of the power generation device 70, between the plurality of coils 78 and the smoothing unit 90. The smoothing unit 90 includes, for example, at least one capacitor. The smoothing unit 90 is disposed, for example, in the power supply path of the power generation device 70, between the rectifier 88 and the power storage unit 62. The power generated by the plurality of coils 78 is rectified by the rectifier 88 and then smoothed by the smoothing unit 90.

[0088] 4 and 6, the power generation device 70 further includes, for example, a plurality of rectifier circuits 86. The plurality of rectifier circuits 86 include, for example, a first rectifier circuit 86A and a second rectifier circuit 86B. For example, the first coil 78A is connected to the first rectifier circuit 86A. For example, the second coil 78B is connected to the second rectifier circuit 86B.

[0089] 2 to 5, the power generation device 70 further includes, for example, an operation unit 92 that can be operated by a user. The swinging unit 74 is configured to swing when, for example, the user operates the operation unit 92. The operation unit 92 includes, for example, a contact portion 92A.

[0090] The contact portion 92A is provided on the housing 52 so as to be able to come into contact with the swinging portion 74. As shown in FIG. 3, the contact portion 92A overlaps with the swinging portion 74, for example, when viewed from the third direction A3. The contact portion 92A protrudes in the first direction A1, for example, when viewed from the third direction A3. As shown in FIG. 4, the contact portion 92A overlaps with the swinging portion 74, for example, when viewed from the first direction A1. The contact portion 92A protrudes in the second direction A2, for example, when viewed from the first direction A1.

[0091] For example, when the operating unit 92 is operated by a user, the contact portion 92A is configured to induce the swinging of the swinging portion 74. For example, the contact portion 92A swings the swinging portion 74 by coming into contact with the swinging portion 74 as the operating unit 92 moves.

[0092] For example, when the operating unit 92 is pressed by the user, the contact portion 92A presses the swinging unit 74. As the swinging unit 74 is pressed by the contact portion 92A, the second swinging unit end 74B of the swinging unit 74 moves in the third direction A3, with the first swinging unit end 74A of the swinging unit 74 as a fulcrum. When the contact portion 92A moves further in the third direction A3 and passes through a portion corresponding to the second swinging unit end 74B, the swinging unit 74 vibrates. As the magnetostrictive member 76 included in the swinging unit 74 vibrates, the magnetostrictive member 76 expands and contracts, and the magnetic flux passing through the coil 78 changes. As the magnetic flux passing through the coil 78 changes, the coil 78 generates electricity.

[0093] When the user releases the operating unit 92, the elastic member 54 biases the operating unit 92, causing the operating unit 92 to return to the position it was in before operation. As the operating unit 92 returns to its position before operation, the contact portion 92A moves in the third direction A3. When the contact portion 92A passes through a portion corresponding to the second oscillating unit end portion 74B, the oscillating unit 74 vibrates. As the magnetostrictive member 76 included in the oscillating unit 74 vibrates, the magnetostrictive member 76 expands and contracts, causing a change in the magnetic flux passing through the coil 78. As the magnetic flux passing through the coil 78 changes, the coil 78 generates electricity.

[0094] In this embodiment, the power generating section 72 includes a plurality of coils 78. Therefore, the power generating efficiency of the power generating section 72 can be increased compared to when the power generating section 72 includes only one coil 78.

[0095] The closer to the first oscillating part end 74A, which serves as the fulcrum for the oscillation of the oscillating part 74, the greater the bending moment when the oscillating part 74 oscillates, and therefore the greater the inverse magnetostriction effect. In this embodiment, at least one of the multiple coils 78 has a greater number of turns per unit length the closer it is to the first oscillating part end 74A, which can increase the power generation efficiency of the power generation part 72. In this embodiment, the closer the multiple coils 78 are to the first oscillating part end 74A, the greater the number of turns per unit length, which can increase the power generation efficiency of the power generation part 72.

[0096] In this embodiment, multiple coils 78 are provided on the oscillating part 74. In addition, the first coil 78A, which has a larger number of turns per unit length, is arranged on the side of the first oscillating part end 74A. Therefore, the size of the power generation device 70 can be reduced while maintaining power generation efficiency.

[0097] The lighter the second oscillating part end 74B, the easier it is to vibrate the oscillating part 74. In this embodiment, the number of turns per unit length of the coil 78 close to the second oscillating part end 74B is small, which allows the oscillating part 74 to vibrate favorably.

[0098] Second Embodiment A power generation device 70 and a component 50 for a human-powered vehicle according to a second embodiment will be described with reference to Fig. 7. In this embodiment, components common to the first embodiment are assigned the same reference numerals as in the first embodiment, and redundant description will be omitted.

[0099] 7, the at least one magnetic flux generation unit 80 includes, for example, a plurality of magnetic flux generation units 80. The plurality of magnetic flux generation units 80 includes, for example, a first magnetic flux generation unit 80A and a second magnetic flux generation unit 80B different from the first magnetic flux generation unit 80A.

[0100] The first magnetic flux generation unit 80A is disposed, for example, closer to the first oscillation unit end 74A than the second magnetic flux generation unit 80B. The first magnetic flux generation unit 80A is disposed, for example, at a position corresponding to the first coil 78A in the magnetic flux generation unit holding unit 84. The position corresponding to the first coil 78A in the magnetic flux generation unit holding unit 84 is, for example, a position where the magnetic field strength of the first magnetic flux generation unit 80A is most suitable for power generation efficiency at the end of the first coil 78A on the first oscillation unit end 74A side.

[0101] The first magnetic flux generator 80A is provided, for example, at the first holding portion end portion 84A. The support portion 82 is, for example, separate from the magnetic flux generator holding portion 84. The first magnetic flux generator 80A is, for example, disposed between the support portion 82 and the magnetic flux generator holding portion 84 in the second direction A2. The first magnetic flux generator 80A includes, for example, a permanent magnet.

[0102] The second magnetic flux generator 80B is, for example, arranged closer to the second oscillation unit end 74B than the first magnetic flux generator 80A. The second magnetic flux generator 80B is, for example, arranged at a position of the magnetic flux generator holder 84 corresponding to the second coil 78B. The position of the magnetic flux generator holder 84 corresponding to the second coil 78B is, for example, a position where the magnetic field strength of the second magnetic flux generator 80B is strongest at the end of the second coil 78B on the second oscillation unit end 74B side. The second magnetic flux generator 80B is, for example, provided at the second holder end 84B. The second magnetic flux generator 80B includes, for example, a permanent magnet.

[0103] The magnetic force of the first magnetic flux generation unit 80A is, for example, equal to the magnetic force of the second magnetic flux generation unit 80B. The magnetic force of the first magnetic flux generation unit 80A may be greater or smaller than the magnetic force of the second magnetic flux generation unit 80B. The magnetic flux density of the first magnetic flux generation unit 80A is, for example, equal to the magnetic flux density of the second magnetic flux generation unit 80B. The magnetic flux density of the first magnetic flux generation unit 80A may be greater or smaller than the magnetic flux density of the second magnetic flux generation unit 80B.

[0104] The first magnetic flux generating unit 80A can increase the magnetic flux density of the magnetic flux passing through the magnetostrictive member 76 on the side of the first oscillating unit end 74A. Therefore, the first magnetic flux generating unit 80A can increase the generated voltage of the power generating device 70. The second magnetic flux generating unit 80B can increase the magnetic flux density of the magnetic flux passing through the magnetostrictive member 76 on the side of the second oscillating unit end 74B. Therefore, the second magnetic flux generating unit 80B can increase the generated voltage of the power generating device 70.

[0105] <Third embodiment> A power generation device 70 and a component 50 for a human-powered vehicle according to the third embodiment will be described with reference to Fig. 8. In this embodiment, components common to the first and second embodiments are designated by the same reference numerals as in the first and second embodiments, and redundant description will be omitted.

[0106] 8, the support portion 82 of the third embodiment extends, for example, along the second direction A2 when viewed from the first direction A1. The first swing portion end portion 74A of the swing portion 74 is sandwiched between the first support portion 82A and the second support portion 82B in the third direction A3, whereby the swing portion 74 is supported by the support portion 82.

[0107] 8, the at least one magnetic flux generation unit 80 includes, for example, a plurality of magnetic flux generation units 80. The plurality of magnetic flux generation units 80 include, for example, a first magnetic flux generation unit 80A and a second magnetic flux generation unit 80B. The first magnetic flux generation unit 80A of the third embodiment is not provided in a magnetic flux generation unit holding unit 84. The second magnetic flux generation unit 80B of the third embodiment is provided in a magnetic flux generation unit holding unit 84 different from that of the second embodiment.

[0108] The magnetic flux generator holding portion 84 of the third embodiment extends, for example, in a second direction A2 intersecting the first direction A1, and is provided with a second magnetic flux generator 80B. The magnetic flux generator holding portion 84 extends, for example, along the second direction A2 when viewed from the first direction A1. The magnetic flux generator holding portion 84 is, for example, a separate body from the support portion 82. The magnetic flux generator holding portion 84 is attached, for example, to the bottom portion 52A.

[0109] The swinging portion 74 is located between the cover portion 52C and the magnetic flux generator holding portion 84 in the second direction A2. The swinging portion 74 does not contact the cover portion 52C in the second direction A2. The swinging portion 74 does not contact the magnetic flux generator holding portion 84 in the second direction A2.

[0110] The power generating device 70 includes, for example, a magnetic flux generator holding portion 84 and an extension portion 94 provided on the opposite side of the support portion 82 from the swinging portion 74 in the second direction A2. The first magnetic flux generator 80A is provided, for example, on the opposite side of the support portion 82 from the swinging portion 74 in the second direction A2. The first magnetic flux generator 80A is attached, for example, to at least one of the support portion 82 and the side wall portion 52B.

[0111] The extension portion 94 extends, for example, toward the first magnetic flux generation portion 80A. The extension portion 94 extends, for example, from the first holding portion end portion 84A toward the first magnetic flux generation portion 80A along the third direction A3. A gap 96, for example, is formed between the extension portion 94 and the first magnetic flux generation portion 80A. Because the gap 96 is formed between the extension portion 94 and the first magnetic flux generation portion 80A, the extension portion 94 does not come into contact with the first magnetic flux generation portion 80A.

[0112] One of the plurality of magnetic flux generation units 80 is disposed, for example, at a position corresponding to a gap between two adjacent ones of the plurality of coils 78. The plurality of magnetic flux generation units 80 includes, for example, a third magnetic flux generation unit 80C disposed at a position corresponding to a gap between two adjacent ones of the plurality of coils 78. The third magnetic flux generation unit 80C includes, for example, a permanent magnet.

[0113] The magnetic force of the third magnetic flux generation unit 80C is, for example, equal to at least one of the magnetic force of the first magnetic flux generation unit 80A and the magnetic force of the second magnetic flux generation unit 80B. The magnetic force of the third magnetic flux generation unit 80C may be different from the magnetic force of the first magnetic flux generation unit 80A and the magnetic force of the second magnetic flux generation unit 80B. The magnetic flux density of the third magnetic flux generation unit 80C is, for example, equal to at least one of the magnetic flux density of the first magnetic flux generation unit 80A and the magnetic flux density of the second magnetic flux generation unit 80B. The magnetic flux density of the third magnetic flux generation unit 80C may be different from the magnetic flux density of the first magnetic flux generation unit 80A and the magnetic flux density of the second magnetic flux generation unit 80B.

[0114] The power generating device 70 can strengthen the closed magnetic flux loop by using the first magnetic flux generating unit 80A, the second magnetic flux generating unit 80B, and the third magnetic flux generating unit 80C. Because the third magnetic flux generating unit 80C is disposed at a position corresponding to the space between two adjacent ones of the plurality of coils 78, the third magnetic flux generating unit 80C can generate power for the two adjacent ones of the plurality of coils 78. Therefore, even if the plurality of magnetic flux generating units 80 does not include any other magnetic flux generating units 80 other than the third magnetic flux generating unit 80C, the third magnetic flux generating unit 80C can enable the power generating unit 72 to generate power efficiently.

[0115] <Fourth embodiment> A power generation device 70 and a component 50 for a human-powered vehicle according to a fourth embodiment will be described with reference to Fig. 9. In this embodiment, components common to the first to third embodiments are assigned the same reference numerals as those in the first to third embodiments, and redundant description will be omitted.

[0116] 9, the power generating device 70 of the fourth embodiment further includes, for example, a support portion 82, a magnetic flux generator holding portion 84, and an additional coil 98 that generates power by the swing of the swing portion 74. The support portion 82 extends, for example, in a first direction A1, and the magnetic flux generator holding portion 84 that swingably supports the swing portion 74 extends in a second direction A2 that intersects with the first direction A1, and at least one magnetic flux generator 80 is provided thereon.

[0117] The additional coil 98 is provided, for example, on at least one of the support portion 82 and the magnetic flux generator holding portion 84. The additional coil 98 is provided, for example, on the magnetic flux generator holding portion 84. The additional coil 98 is arranged, for example, on the magnetic flux generator holding portion 84, at a position corresponding to the space between two adjacent ones of the plurality of coils 78. The additional coil 98 is arranged, for example, on the magnetic flux generator holding portion 84, at a position corresponding to the space between the first coil 78A and the second coil 78B.

[0118] The magnetic flux generator holding unit 84 includes, for example, a yoke. The magnetic flux passing through the yoke also changes with time, similar to the magnetic flux passing through the magnetostrictive member 76. This allows the additional coil 98 to generate electricity. Therefore, since power can be generated by the additional coil 98 together with the first coil 78A and the second coil 78B, the power generation efficiency of the power generation device 70 can be improved by the additional coil 98.

[0119] Fifth Embodiment A power generation device 70 and a component 50 for a human-powered vehicle according to a fifth embodiment will be described with reference to Figures 1, 5, and 10. In this embodiment, components common to the first to fourth embodiments are assigned the same reference numerals as those in the first to fourth embodiments, and redundant explanations will be omitted.

[0120] The component 50 of the fifth embodiment includes, for example, the crank arms 22A, 22B of the human-powered vehicle 10. The component 50 of the fifth embodiment may include, for example, only one of the crank arms 22A, 22B. The power generating device 70 of the fifth embodiment is provided, for example, on the crank arms 22A, 22B. The power generating device 70 may be provided, for example, on only one of the crank arms 22A, 22B.

[0121] The housing 52 of the fifth embodiment includes, for example, the housings of the crank arms 22A, 22B. The housing 52 is formed of, for example, a conductive material such as metal. The electric board 60A is provided, for example, on the inner surface of the housing 52. The transmitter 56 is disposed, for example, on the outer surface 52K of the housing 52. The housing 52 is provided with, for example, a hole through which a wire connecting the transmitter 56 and the electric board 60A passes.

[0122] The component 50 further includes, for example, a swing imparting unit 100 that uses magnetic force to swing the swinging unit 74. The swing imparting unit 100 is provided on the pedals 24A, 24B of the human-powered vehicle 10, for example.

[0123] The pedals 24A, 24B are rotatably supported relative to the crank arms 22A, 22B by a pedal shaft 102. The oscillation imparting unit 100 includes, for example, a first magnet 100A and a second magnet 100B. The first magnet 100A and the second magnet 100B are provided, for example, on the same surface of the pedals 24A, 24B. The first magnet 100A and the second magnet 100B are provided, for example, on surfaces of the pedals 24A, 24B that face the crank arms 22A, 22B.

[0124] The first magnet 100A and the second magnet 100B are provided, for example, at positions on the pedals 24A, 24B that allow them to face predetermined portions of the crank arms 22A, 22B as the pedals 24A, 24B rotate. The predetermined portions of the crank arms 22A, 22B correspond to the oscillating magnets 104 provided on the crank arms 22A, 22B. The orientation of the magnetic poles of the first magnet 100A is different from the orientation of the magnetic poles of the second magnet 100B. The orientation of the magnetic poles of the first magnet 100A is, for example, opposite to the orientation of the magnetic poles of the second magnet 100B.

[0125] The oscillating unit 74 is provided with, for example, an oscillating magnet 104. The oscillating magnet 104 is provided, for example, at the first oscillating unit end 74A of the oscillating unit 74. The magnetic pole orientation of the oscillating magnet 104 is the same as the magnetic pole orientation of one of the first magnet 100A and the second magnet 100B. At least one magnetic flux generating unit 80 may include the oscillating magnet 104.

[0126] For example, when the pedals 24A, 24B rotate relative to the crank arms 22A, 22B, the oscillating magnet 104 is attracted to one of the magnetic poles of the first magnet 100A and the second magnet 100B. For example, when the pedals 24A, 24B rotate relative to the crank arms 22A, 22B, the oscillating magnet 104 is configured to repel the other of the magnetic poles of the first magnet 100A and the second magnet 100B. The oscillating magnet 104 repeatedly attracts and repels the first magnet 100A and the second magnet 100B, causing the oscillating unit 74 to oscillate.

[0127] When a user applies propulsive force to the human-powered vehicle 10 by pedaling the pedals 24A, 24B, the pedals 24A, 24B rotate relative to the crank arms 22A, 22B. The power generating unit 72 of this embodiment can generate electricity when the user pedals the pedals 24A, 24B. When the human-powered vehicle 10 is stopped and the drive wheels are off the ground, the power generating unit 72 of this embodiment can generate electricity by holding the pedals 24A, 24B in the user's hands and rotating the pedals 24A, 24B. Therefore, the power generating unit 72 of this embodiment can generate electricity even when the human-powered vehicle 10 is stopped.

[0128] One of the first magnet 100A and the second magnet 100B may be omitted. Even in the case where one of the first magnet 100A and the second magnet 100B is omitted, when the pedals 24A, 24B rotate relative to the crank arms 22A, 22B, the oscillating portion 74 oscillates due to attraction or repulsion of the magnets.

[0129] In this embodiment, the power generating device 70 may be provided on the pedals 24A, 24B, and the first magnet 100A and the second magnet 100B may be provided on the crank arms 22A, 22B. The component 50 of this embodiment may include components other than the crank arms 22A, 22B. The component 50 of this embodiment may include, for example, one of two members that move relative to one another and are included in the human-powered vehicle 10.

[0130] <Example of change> The descriptions of each embodiment are intended to exemplify possible forms of a power generation device and components for a human-powered vehicle according to the present disclosure, and are not intended to limit the forms. The power generation device and components for a human-powered vehicle according to the present disclosure may take the form of, for example, modified examples of the embodiments described below, or a combination of at least two mutually consistent modified examples. In the following modified examples, parts common to the forms of the respective embodiments will be assigned the same reference numerals as those of the respective embodiments, and descriptions thereof will be omitted.

[0131] At least one of the multiple coils 78 may have a greater number of turns per unit length, for example, closer to the first oscillating portion end 74A. For example, at least one of the first coil 78A and the second coil 78B may have a greater number of turns per unit length closer to the first oscillating portion end 74A. At least one of the multiple coils 78 may be configured, for example, so that the number of turns in a first range closer to the first oscillating portion end 74A is greater than the number of turns in a range farther from the first oscillating portion end 74A than in the first range. At least one of the multiple coils 78 may be configured, for example, so that the number of turns gradually increases closer to the first oscillating portion end 74A.

[0132] At least one of the multiple coils 78 may have fewer turns per unit length, for example, closer to the second oscillating portion end 74B. For example, at least one of the first coil 78A and the second coil 78B may have fewer turns per unit length closer to the second oscillating portion end 74B. At least one of the multiple coils 78 may be configured, for example, so that the number of turns in a second range closer to the second oscillating portion end 74B is smaller than the number of turns in a range farther from the second oscillating portion end 74B than in the second range. At least one of the multiple coils 78 may be configured, for example, so that the number of turns gradually decreases closer to the second oscillating portion end 74B.

[0133] As shown in FIG. 11 , multiple coils 78 may be connected to a rectifier circuit 86. In the power generating unit 72 of this modified example, only one rectifier circuit 86 is provided for the multiple coils 78. For example, if the multiple coils 78 include a first coil 78A and a second coil 78B, both the first coil 78A and the second coil 78B are connected to one rectifier circuit 86. By connecting both the first coil 78A and the second coil 78B to one rectifier circuit 86, the size of the electric board 60A can be reduced. If the multiple coils 78 include three or more coils 78, two or more of the multiple coils 78 may be connected to one rectifier circuit 86, and the other coils 78 may be connected to another rectifier circuit 86.

[0134] In the second embodiment, the first magnetic flux generator 80A may be arranged on a surface of the support portion 82 opposite to the oscillating portion 74, or at a position farther from the oscillating portion 74 than the support portion 82. As shown in FIG. 12 , the first magnetic flux generator 80A is provided, for example, on a surface of the support portion 82 opposite to the oscillating portion 74 in the second direction A2. The first magnetic flux generator 80A is arranged, for example, at a position farther from the oscillating portion 74 in the second direction A2. In this modified example, the first magnetic flux generator 80A may be provided on the side wall portion 52B.

[0135] 13 , in the third embodiment, both the first magnetic flux generator 80A and the second magnetic flux generator 80B may be provided on the magnetic flux generator holding portion 84. The first magnetic flux generator 80A is disposed at a position on the magnetic flux generator holding portion 84 corresponding to the first coil 78A. The first magnetic flux generator 80A is disposed, for example, between the support portion 82 and the magnetic flux generator holding portion 84 in the second direction A2. In this modified example, the third magnetic flux generator 80C may be omitted.

[0136] In the third embodiment, the third magnetic flux generator 80C may be omitted.

[0137] The relationship between the number of turns per unit length of the first coil 78A and the number of turns per unit length of the second coil 78B can be changed as needed, as long as the number of turns per unit length of the first coil 78A is different from the number of turns per unit length of the second coil 78B. The number of turns per unit length of the second coil 78B may be greater than the number of turns per unit length of the first coil 78A. In this modification, by making the number of turns per unit length of the second coil 78B different from the number of turns per unit length of the first coil 78A, multiple coils 78 with different dimensions can be arranged according to the internal layout of the power generating device 70. Because the number of turns per unit length of the second coil 78B is different from the number of turns per unit length of the first coil 78A, this contributes to the flexibility of the internal layout of the power generating device 70 and allows for an increase in the number of coils 78.

[0138] The multiple coils 78 may further include a third coil provided between the first coil 78A and the second coil 78B in the oscillating portion 74. The number of turns per unit length of the third coil may be different from at least one of the number of turns per unit length of the first coil 78A and the number of turns per unit length of the second coil 78B, for example. The number of turns per unit length of the third coil may be less than the number of turns per unit length of the first coil 78A and more than the number of turns per unit length of the second coil 78B, for example. The number of turns per unit length of the third coil may be less than the number of turns per unit length of the second coil 78B. The number of turns per unit length of the third coil may be more than the number of turns per unit length of the first coil 78A. The multiple coils 78 may include two or more third coils.

[0139] The magnetostrictive member 76 may be formed integrally with the mounting portion 74X. In this modification, the magnetostrictive member 76 is formed integrally with the mounting portion 74X by, for example, welding, press working, or the like.

[0140] When viewed from the third direction A3, the mounting portion 74X may have a shape different from that of the magnetostrictive member 76. In this modified example, when viewed from the third direction A3, the mounting portion 74X may be formed with a portion that does not overlap with the magnetostrictive member 76.

[0141] The component 50 may include components other than the operating device 50A as long as it is equipped with the power generation device 70. In this modified example, the component 50 includes, for example, at least one of various sensors provided on the human-powered vehicle 10, the transmission 40A, the adjustable seat post 40B, the suspension 40C, the drive unit 40D, the braking device 40E, and the lamp 40F. The component 50 is configured such that the magnetostrictive member 76 oscillates due to vibrations applied when the human-powered vehicle 10 is traveling. At least one of the various sensors provided on the human-powered vehicle 10, the transmission 40A, the adjustable seat post 40B, the suspension 40C, the drive unit 40D, the braking device 40E, and the lamp 40F is operated, for example, by power generated by the power generation device 70.

[0142] The power generating device 70 may be used for purposes other than the human-powered vehicle 10. For example, the power generating device 70 may be used in electrical components such as industrial equipment and household components.

[0143] The phrase "at least one" as used herein means "one or more" of the desired options. As an example, the phrase "at least one" as used herein means "only one option" or "both of two options" when the number of options is two. As another example, the phrase "at least one" as used herein means "only one option" or "any combination of two or more options" when the number of options is three or more. [Explanation of symbols]

[0144] 10...Manually driven vehicle, 22A, 22B...Crank arm, 24A, 24B...Pedal, 40...Other component, 50...Component, 50A...Operating device, 52...Housing, 52K...Outer surface, 56...Transmitter, 58...Controller, 70...Power generator, 72...Power generator, 74...Oscillator, 74A...First oscillator end, 74B...Second oscillator end, 76...Magnetostrictive member, 78...Coil, 78 A...first coil, 78B...second coil, 80...magnetic flux generating portion, 80A...first magnetic flux generating portion, 80B...second magnetic flux generating portion, 82...support portion, 84...magnetic flux generating portion holding portion, 84A...first holding portion end, 84B...second holding portion end, 86...rectifier circuit, 86A...first rectifier circuit, 86B...second rectifier circuit, 92...operating portion, 94...extension portion, 96...gap, 98...additional coil, 100...oscillation imparting portion.

Claims

1. A power generation device, a power generation unit configured to generate electricity by magnetostrictive power generation, The power generation unit is a swinging part having a magnetostrictive member; a plurality of coils that generate electricity by the oscillation of the oscillation unit; at least one magnetic flux generating unit; the plurality of coils include a first coil and a second coil different from the first coil, The power generating device, wherein the number of turns per unit length of the first coil is different from the number of turns per unit length of the second coil.

2. Further comprising a plurality of rectifier circuits; the plurality of rectifier circuits include a first rectifier circuit and a second rectifier circuit, the first coil is connected to the first rectifier circuit, The power generating device according to claim 1 , wherein the second coil is connected to the second rectifier circuit.

3. further comprising a rectifier circuit; The power generating device according to claim 1 , wherein the plurality of coils are connected to the rectifier circuit.

4. The power generating device according to claim 1 , wherein at least one of the plurality of coils is provided on the swinging portion.

5. a support portion extending in a first direction and supporting the swing portion so that the swing portion can swing; The power generating device according to claim 4 , wherein the swinging portion includes a first swinging portion end portion supported by the support portion, and a second swinging portion end portion opposite to the first swinging portion end portion.

6. the first coil and the second coil are provided on the swinging portion, The power generating device according to claim 5 , wherein the first coil is disposed closer to the end of the first swinging portion than the second coil.

7. The power generating device according to claim 6 , wherein the number of turns per unit length of the first coil is greater than the number of turns per unit length of the second coil.

8. The power generating device according to claim 5 , wherein at least one of the plurality of coils has a greater number of turns per unit length as it approaches the end of the first swinging part.

9. The power generating device according to claim 5 , wherein the at least one magnetic flux generating section includes a plurality of magnetic flux generating sections.

10. the plurality of magnetic flux generation units include a first magnetic flux generation unit and a second magnetic flux generation unit different from the first magnetic flux generation unit, the first magnetic flux generating portion is disposed closer to an end of the first swinging portion than the second magnetic flux generating portion, The power generating device according to claim 9 , wherein the second magnetic flux generating portion is disposed closer to the end of the second swinging portion than the first magnetic flux generating portion.

11. a magnetic flux generator holding portion extending in a second direction intersecting the first direction and on which the at least one magnetic flux generator is provided; the first coil and the second coil are provided on the swinging portion, 6. The power generating device according to claim 5, wherein the at least one magnetic flux generating unit includes: a first magnetic flux generating unit arranged at a position corresponding to the first coil in the magnetic flux generating unit holding unit; and a second magnetic flux generating unit arranged at a position corresponding to the second coil in the magnetic flux generating unit holding unit and different from the first magnetic flux generating unit.

12. the magnetic flux generator holder includes a first holder end located on the support side and a second holder end located farther from the support than the first holder end, the first magnetic flux generating portion is provided at an end of the first holding portion, The power generating device according to claim 11 , wherein the second magnetic flux generating portion is provided at an end of the second holding portion.

13. The power generating device according to claim 11 , wherein the magnetic flux generator holding portion is separate from the support portion.

14. a magnetic flux generator holding portion extending in a second direction intersecting the first direction and on which the second magnetic flux generator is provided; an extension portion provided on the opposite side of the support portion from the swing portion in the second direction, the first magnetic flux generating portion is provided on the opposite side of the support portion to the swing portion in the second direction, the extension portion extends toward the first magnetic flux generation portion, The power generating device according to claim 10 , wherein a gap is formed between the extension portion and the first magnetic flux generating portion.

15. The power generating device according to claim 9 , wherein one of the plurality of magnetic flux generating units is disposed at a position corresponding to a position between two adjacent ones of the plurality of coils.

16. The power generating device according to claim 1 , wherein the at least one magnetic flux generating portion includes a permanent magnet.

17. a support portion extending in a first direction and supporting the swing portion so that the swing portion can swing; a magnetic flux generator holding portion extending in a second direction intersecting the first direction and having the at least one magnetic flux generator provided thereon; an additional coil that generates electricity by the oscillation of the oscillation part, The power generating device according to claim 4 , wherein the additional coil is provided on at least one of the support portion and the magnetic flux generator holding portion.

18. The power generating device according to claim 17 , wherein the additional coil is provided in the magnetic flux generator holder.

19. Further comprising an operation unit operable by a user, The power generating device according to claim 1 , wherein the swinging portion is configured to swing when the user operates the operation portion.

20. A component for a human-powered vehicle, A power generation device according to any one of claims 1 to 19; a transmitter configured to transmit a predetermined signal to other components using the power generated by the power generation device; a control unit configured to control the transmitter unit to transmit the predetermined signal.

21. The component of claim 20 , including a manipulation device configured to manipulate the other component.

22. a crank arm of the human-powered vehicle; the power generating device is provided on the crank arm, Further provided is a swinging force applying unit that swings the swinging unit by magnetic force, The component according to claim 20 , wherein the rocking motion applying portion is provided on a pedal of the human-powered vehicle.

23. a housing that accommodates at least a portion of the power generation device; The component of claim 20 , wherein the transmitter is disposed on an exterior surface of the housing.

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