JP7136564B2 - Components for human-powered vehicles - Google Patents

Description

The present invention relates to a human powered vehicle component configured to be attached to a human powered vehicle.

As an example of a human powered vehicle component configured to be mounted on a human powered vehicle (especially a bicycle), a drive unit is known which includes a motor to assist in propulsion of the human powered vehicle. Such a drive unit includes a case and a circuit board housed in the case and on which a controller for controlling the driving of the motor is mounted, as disclosed in Patent Document 1, for example. The circuit board is electrically connected to terminals fixed to the case via a plurality of electric cables. Connectors are connected to two power cables among the plurality of electric cables.

Japanese Patent Application Laid-Open No. 2001-106163

A component for a human powered vehicle, such as the drive unit, may be provided with a plurality of circuit boards, and electrical connections between at least two circuit boards may be required. In this case, it is conceivable that the circuit boards to be electrically connected to each other are connected via an electric cable as in Patent Document 1 described above.

However, such an electrical connection method tends to increase the number of parts.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a component for a human-powered vehicle that can be configured with a small number of parts for board connection portions of a plurality of circuit boards.

One form of a human powered vehicle component according to the first aspect of the present invention is configured to be mounted on a human powered vehicle and comprises: a first circuit board; a second circuit board; and said first circuit board and said second circuit. a first substrate connecting portion for connecting substrates, wherein the first substrate connecting portion is provided directly on the first circuit substrate; and the first electrical connection portion is provided directly on the second circuit substrate; and a second electrical connection portion electrically connected to the first electrical connection portion by direct contact, wherein the first electrical connection portion and the second electrical connection portion are connectors or non-flexible At least one of the first circuit board and the second circuit board has a resin molded portion.

According to the manpower-driven vehicle component of the first aspect, the first board connecting portion can be configured with a small number of parts. In addition, the surface of at least one of the first circuit board and the second circuit board covered with the resin mold portion is less likely to be damaged during the work of connecting the first circuit board and the second circuit board. Furthermore, it is possible to prevent water droplets from adhering to the surface covered with the resin mold portion.

The human powered vehicle component according to the first aspect includes a third circuit board and a second board connection connecting at least one of the first circuit board and the second circuit board to the third circuit board. , wherein the second board connecting part comprises: a third electrical connecting part provided directly on at least one of the first circuit board and the second circuit board; and a third electrical connecting part provided directly on the third circuit board. and a fourth electrical connection portion directly contacting and electrically connected to the third electrical connection portion, wherein the third electrical connection portion and the fourth electrical connection portion are connectors or non-flexible Each is composed of a physical member.

According to the manpower-driven vehicle component of the second aspect, the second board connecting portion can be configured with a small number of parts.

In the human powered vehicle component according to the third aspect according to the first aspect or the second aspect, at least one of the first circuit board and the second circuit board comprises cable connections to which electrical cables are connected, sensors, and It has at least one of a radio unit for transmitting and/or receiving radio signals.

According to the human powered vehicle component of the third aspect, at least one of the cable connection, the sensor and the wireless unit can be arranged in an appropriate position.

The human powered vehicle component according to the third aspect further includes a housing that accommodates the first circuit board, the second circuit board and the first board connection, wherein the first circuit board and the first board At least one of the two circuit boards has the cable connection portion, and the cable connection portion is exposed to the outside of the housing.

According to the manpower-driven vehicle component of the fourth aspect, the housing can protect the first circuit board, the second circuit board, and the first board connecting portion. Also, an electric cable can be easily connected to the cable connecting portion.

In the component for manpower-driven vehicle according to the fifth aspect according to the third or fourth aspect, the sensor is input to a first sensor for detecting a rotation speed of a crankshaft of the manpower-driven vehicle, and the crankshaft. At least one of the second sensors for detecting the human drive force is included.

According to the manpower-driven vehicle component of the fifth aspect, at least one of the rotational speed of the crankshaft of the manpower-driven vehicle and the manpower driving force input to the crankshaft of the manpower-driven vehicle can be obtained.

In the human-powered vehicle component according to the third aspect or the fourth aspect, the wireless unit receives a wireless signal from a second sensor that detects a human-powered driving force input to a crankshaft of the human-powered vehicle. It includes at least one of a receiving unit for receiving and a communication unit for transmitting and receiving wireless signals to and from an external device.

According to the human-powered vehicle component of the sixth aspect, it is possible to acquire the human-powered driving force input to the crankshaft of the human-powered vehicle and the information wirelessly transmitted from the external device. Also, if the wireless unit includes a communication unit, information can be wirelessly transmitted to an external device.

A component for a human-powered vehicle according to any one of the first to third aspects has a crankshaft supporting portion for supporting a crankshaft of the human-powered vehicle, the first circuit board, the third Further includes a housing that accommodates two circuit boards and the first board connection.

According to the human powered vehicle component of the seventh aspect, the housing can be used to support the crankshaft of the human powered vehicle. Moreover, the housing can protect the first circuit board, the second circuit board, and the first board connecting portion.

One form of a human powered vehicle component in accordance with the eighth aspect of the present invention is configured to be mounted on a human powered vehicle and comprises a first circuit board, a second circuit board and a third circuit board; a first board connecting portion that connects the second circuit board; and a second board connecting portion that connects at least one of the first circuit board and the second circuit board to the third circuit board, A first board connecting portion is provided directly on the first circuit board and directly on the second circuit board, and is in direct contact with the first electrical connecting portion for electrical connection. the second board connecting part is a third electrical connecting part directly provided on at least one of the first circuit board and the second circuit board; and the third circuit board. and a fourth electrical connection portion that is directly in contact with and electrically connected to the third electrical connection portion, the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion. The connecting portion and the fourth electrical connecting portion are each constituted by a connector or a non-flexible member.

According to the manpower-driven vehicle component of the eighth aspect, the first board connecting portion and the second board connecting portion can be configured with a small number of parts.

In the human powered vehicle component of the ninth aspect according to the eighth aspect, at least one of the first circuit board, the second circuit board and the third circuit board has a cable connection portion to which an electrical cable is connected. , a sensor, and a radio unit for transmitting and/or receiving radio signals.

According to the man-powered vehicle component of the ninth aspect, at least one of the cable connection, the sensor and the wireless unit can be arranged in an appropriate position.

The human powered vehicle component according to the ninth aspect accommodates the first circuit board, the second circuit board, the third circuit board, the first board connection and the second board connection. A housing is further included, and the cable connecting portion is exposed to the outside of the housing.

According to the manpower-driven vehicle component of the tenth aspect, the housing can protect the first circuit board, the second circuit board, the third circuit board, the first board connecting portion, and the second board connecting portion. . Also, an electric cable can be easily connected to the cable connecting portion.

In the component for a manpower-driven vehicle according to the ninth or tenth aspect, the sensor includes a first sensor for detecting a rotational speed of a crankshaft of the manpower-driven vehicle, and a sensor input to the crankshaft. At least one of the second sensors for detecting the human drive force is included.

According to the manpower-driven vehicle component of the eleventh aspect, at least one of the rotational speed of the crankshaft of the manpower-driven vehicle and the manpower driving force input to the crankshaft of the manpower-driven vehicle can be obtained.

In the component for a manpower-driven vehicle according to the ninth or tenth aspect, the wireless unit receives a radio signal from a second sensor that detects manpower driving force input to a crankshaft of the manpower-driven vehicle. and/or a communication unit for transmitting and receiving wireless signals to and from an external device.

According to the human-powered vehicle component of the twelfth aspect, it is possible to acquire the human-powered driving force input to the crankshaft of the human-powered vehicle and the information wirelessly transmitted from the external device. Also, if the wireless unit includes a communication unit, information can be wirelessly transmitted to an external device.

A component for a manpower-driven vehicle according to the eighth or ninth side has a crankshaft supporting portion for supporting a crankshaft of the manpower-driven vehicle, and comprises the first circuit board and the second circuit board. , a housing that accommodates the third circuit board, the first board connecting portion and the second board connecting portion.

According to the human powered vehicle component of the thirteenth aspect, the housing can be used to support the crankshaft of the human powered vehicle. Further, the housing can protect the first circuit board, the second circuit board, the third circuit board, the first board connecting portion, and the second board connecting portion.

One form of the human powered vehicle component according to the fourteenth aspect of the present invention is configured to be mounted on a human powered vehicle and comprises: a first circuit board; a second circuit board; and said first circuit board and said second circuit. a first substrate connecting portion for connecting substrates, wherein the first substrate connecting portion is provided directly on the first circuit substrate; and the first electrical connection portion is provided directly on the second circuit substrate; and a second electrical connection portion electrically connected to the first electrical connection portion by direct contact, wherein the first electrical connection portion and the second electrical connection portion are connectors or non-flexible At least one of the first circuit board and the second circuit board includes a cable connector to which an electric cable is connected, a sensor, and a wireless unit that performs at least one of transmission and reception of wireless signals. have at least one of

According to the manpower-driven vehicle component of the fourteenth aspect, the first board connecting portion can be configured with a small number of parts. Also, at least one of a cable connection, a sensor, and a wireless unit can be placed in an appropriate location.

The human powered vehicle component according to the fifteenth aspect according to the fifteenth aspect further includes a housing accommodating the first circuit board, the second circuit board and the first board connection, wherein the cable connection is connected to the housing. exposed to the outside of

According to the manpower-driven vehicle component of the fifteenth aspect, the housing can protect the first circuit board, the second circuit board, and the first board connecting portion. Also, an electric cable can be easily connected to the cable connecting portion.

In the human-powered vehicle component according to the 14th or 15th aspect, the sensor includes a first sensor for detecting a rotational speed of a crankshaft of the human-powered vehicle, and input to the crankshaft. At least one of the second sensors for detecting the human drive force is included.

According to the manpower-driven vehicle component of the sixteenth aspect, at least one of the rotational speed of the crankshaft of the manpower-driven vehicle and the manpower driving force input to the crankshaft of the manpower-driven vehicle can be obtained.

In the component for a human-powered vehicle according to the 14th or 15th aspect, the wireless unit receives a wireless signal from a second sensor that detects a human-powered driving force input to a crankshaft of the human-powered vehicle. It includes at least one of a receiving unit for receiving and a communication unit for transmitting and receiving wireless signals to and from an external device.

According to the human-powered vehicle component of the seventeenth aspect, it is possible to obtain the human-powered driving force input to the crankshaft of the human-powered vehicle and the information wirelessly transmitted from the external device. Also, if the wireless unit includes a communication unit, information can be wirelessly transmitted to an external device.

A human-powered vehicle component according to the fourteenth aspect has a crankshaft support for supporting a crankshaft of the human-powered vehicle and includes the first circuit board, the second circuit board and the first board connection. Further includes a housing that houses the part.

According to the man-powered vehicle component of the eighteenth aspect, the housing can be used to support the crankshaft of the man-powered vehicle. Moreover, the housing can protect the first circuit board, the second circuit board, and the first board connecting portion.

One form of the human powered vehicle component according to the nineteenth aspect of the present invention is configured to be mounted on a human powered vehicle and comprises: a first circuit board; a second circuit board; and said first circuit board and said second circuit. a first board connecting portion for connecting a board; and a crankshaft supporting portion for supporting a crankshaft of the human-powered vehicle, wherein the first circuit board, the second circuit board, and the first board connecting portion a housing for accommodating the first board connection, wherein the first electrical connection is provided directly on the first circuit board; and the first electrical connection is provided directly on the second circuit board; and a second electrical connection portion that is electrically connected to the connection portion by direct contact, wherein the first electrical connection portion and the second electrical connection portion are each configured by a connector or a non-flexible member. .

According to the manpower-driven vehicle component of the nineteenth aspect, the first board connecting portion can be configured with a small number of parts. Moreover, the housing can protect the first circuit board, the second circuit board, and the first board connecting portion. Furthermore, the crankshaft can be supported by the housing.

A twentieth aspect of the human powered vehicle component according to any one of the first to nineteenth aspects, comprising: A distance from the portion where the second electrical connection is provided is 15 mm or less.

According to the human powered vehicle component of the twentieth aspect, the space required for arranging the first circuit board and the second circuit board can be minimized. Moreover, when an electrical signal is transmitted via the first electrical connection portion and the second electrical connection portion, attenuation of the electrical signal can be suppressed.

According to the component for a manpower-driven vehicle of the present invention, it is possible to configure the board connection portions of a plurality of circuit boards with a small number of parts.

1 is a side view showing the overall configuration of a power-assisted bicycle to which a drive unit, which is an example of a component for a human-powered vehicle, is attached; FIG. FIG. 3 is a perspective view showing the drive unit with part of the housing omitted; FIG. 3 is a cross-sectional view of the drive unit cut along a plane including the central axis of the crankshaft and the central axis of the rotor shaft of the electric motor; 1 shows a first circuit board, a second circuit board connected to the first circuit board via the first board connection part, and a third circuit board connected to the first circuit board via the second board connection part; It is a perspective view. It is the figure seen from the side of the 1st circuit board, the 2nd circuit board, and the 3rd circuit board. FIG. 4 is a perspective view showing part of the housing, part of the first circuit board, and the second circuit board, with the resin mold portion omitted; FIG. 7 is a perspective view of FIG. 6 with the first circuit board removed; FIG. 8 is a perspective view of FIG. 7 in a state where a resin molded portion is provided; FIG. 4 is a perspective view showing part of the housing and a cable connecting portion provided on the second circuit board; It is a top view of a 3rd circuit board. FIG. 5 is a cross-sectional view showing a modification of the first electrical connection portion and the second electrical connection portion of the first substrate connection portion;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 shows a power-assisted bicycle 100 to which a drive unit 10, which is an example of a human-powered vehicle component, is attached. The power-assisted bicycle 100 is an example of a human-powered vehicle according to the present invention. A human-powered vehicle is a vehicle that can be driven by at least human-powered driving force. Human powered vehicles include, for example, bicycles. Human-powered vehicles are not limited in the number of wheels and include, for example, one-wheeled vehicles and vehicles with three or more wheels. Human-powered vehicles include, for example, mountain bikes, road bikes, city bikes, cargo bikes, and recumbents. Hereinafter, the electrically assisted bicycle will simply be referred to as a bicycle.

Bicycle 100 includes a front wheel 102 , a rear wheel 104 , a bicycle body 106 , a drive mechanism 108 and an operating section 130 . Bicycle body 106 includes frame 106a, front fork 106b, seat post 106c, and handlebar 106e. Frame 106a includes seat stays 106d, top tube 106f, down tube 106g, seat tube 106h, and chainstays 106i. Front fork 106 b is connected to frame 106 a and axle 102 a of front wheel 102 . Seat stay 106 d is connected to axle 104 a of rear wheel 104 .

Bicycle 100 runs by transmitting human power driving force to rear wheel 104 via drive mechanism 108 . Drive mechanism 108 includes crank 110 , a pair of pedals 112 , front sprocket 114 , rear sprocket 116 and chain 118 .

The crank 110 includes a crankshaft 110a and a pair of crank arms 110b attached to opposite ends of the crankshaft 110a. Each pedal 112 includes a pedal body 112a and a pedal shaft 112b. Each pedal shaft 112b is connected to each crank arm 110b. Each pedal main body 112a is rotatably supported on each pedal shaft 112b with respect to each pedal shaft 112b.

In this embodiment, the drive unit 10 is attached to the frame 106 . As shown in FIGS. 2-9, the drive unit 10 includes a first circuit board 50, a second circuit board 52, and a first board connector 56. As shown in FIG. Drive unit 10 further includes a third circuit board 54 and a second board connector 58 . Drive unit 10 further includes housing 12 . Drive unit 10 further includes electric motor 20 , speed reducer 22 , and output member 40 . First circuit board 50, second circuit board 52, and third circuit board 54 each comprise a printed wiring board.

As shown in FIGS. 2 and 3, the output member 40 is configured by a cylindrical member provided coaxially with the crankshaft 110a. The output member 40 is provided with connecting portions 40a and 40b configured by, for example, splines. The connecting portion 40 a is provided on the inner peripheral surface of the output member 40 at one end portion in the axial direction. The connecting portion 40b is provided on the outer peripheral surface of the other axial end portion of the output member 40 . The output member 40 is connected to the crankshaft 110a via a connecting portion 40a.

The front sprocket 114 is connected to the connecting portion 40 b of the output member 40 . The front sprocket 114 is provided coaxially with the crankshaft 110a. Rotation of the crankshaft 110 a is transmitted to the front sprocket 114 via the output member 40 .

Rear sprocket 116 is coupled to rear wheel 104 so as to be rotatable about rear wheel 104's axle 104a. A chain 118 is wound around the front sprocket 114 and the rear sprocket 116 . When the crank 110 and the crankshaft 110a are rotated forward by the human power applied to the pedals 112, the rear wheel 104 is also rotated forward through the output member 40, the front sprocket 114, the chain 118 and the rear sprocket 116, and the bicycle 100 is rotated. Advance.

A rear derailleur 122 is provided near the rear wheel 104 of the frame 106a. Rear sprocket 116 includes multiple sprockets. Shifting is accomplished by rear derailleur 122 by moving chain 118 which engages rear sprocket 116 .

The operation unit 130 is operated by the rider of the bicycle 100 . The operation unit 130 is attached to the handlebar 106e. Operation unit 130 includes a shifter for shifting gears by rear derailleur 122 .

A battery unit 140 is provided on the frame 106a. In this embodiment, the battery unit 140 is mounted inside or outside the down tube 106g. Battery unit 140 includes one or more battery cells.

In this embodiment, the housing 12 of the drive unit 10 is formed in a substantially elliptical shape that is elongated in the front-rear direction of the bicycle when viewed from the side of the bicycle 100 while attached to the frame 106a. However, the shape of the drive unit 10 is not limited to this embodiment, and may have other shapes. The housing 12 is divided into two parts in the width direction of the bicycle 100 . The housing 12 is composed of a first member 12a and a second member 12b. 2, 6 and 7, the second member 12b is omitted. The housing 12 may be composed of three or more members.

The housing 12 is attached to the connecting portion of the frame 106a between the down tube 106g and the seat tube 106h. Housing 12 includes an attachment portion 12f that is attachable to frame 106a. A plurality of mounting portions 12f are provided at intervals around the rotation axis of the crankshaft 110a. The mounting portion 12f is formed with a screw hole to which a bolt can be attached or a through hole through which the bolt can pass. The attachment portion 12f is provided on the second member 12b in this embodiment. The first member 12 a and the second member 12 b are fixed by a plurality of screws 14 . An internal space is formed within the housing 12 by the first member 12a and the second member 12b. A through hole 12c through which the crankshaft 110a passes is formed in each of the first member 12a and the second member 12b.

The housing 12 has a crankshaft support portion 16 that supports the crankshaft 110a. The crank support portion 16 rotatably supports the crankshaft 110a. The crank support portion 16 supports the crankshaft 110a via bearings. A protruding portion 40c is formed on the inner peripheral surface of the output member 40 at an intermediate position in the axial direction of the output member 40 and protrudes radially inward so as to come into contact with the outer peripheral surface of the crankshaft 110a. The output member 40 is arranged coaxially with the crankshaft 110a by the connecting portion 40a and the projecting portion 40c.

Housing 12 accommodates first circuit board 50 , second circuit board 52 , and first board connection portion 56 . Housing 12 further accommodates third circuit board 54 and second board connection portion 58 . Housing 12 further accommodates at least a portion of output member 40 and speed reducer 22 .

In this embodiment, the electric motor 20 is provided on the first member 12 a of the housing 12 . The electric motor 20 assists the propulsion of the bicycle 100 with electric power supplied from the battery unit 140 .

The electric motor 20 includes a rotor core 20a holding magnets and a stator 20b wound with coils. A rotor shaft 20c is fixed to the center of the rotor core 20a. The rotor shaft 20c is rotatably supported by a pair of support members 20d. In this embodiment, the rotor core 20a, the stator 20b and the support member 20d are housed inside the motor case 20e. The stator 20b and one of the pair of support members 20d are fixed to the motor case 20e. Rotation of the rotor shaft 20 c is reduced in speed and transmitted to the output member 40 via the reduction gear 22 .

The reduction gear 22 includes a motor gear 24, a first reduction gear 26, a second reduction gear 28, and a third reduction gear 30, for example. In FIG. 2, the tooth portions of the motor gear 24, the first reduction gear 26, the second reduction gear 28, and the third reduction gear 30 are omitted.

The motor gear 24 is provided integrally with the rotor shaft 20 c of the electric motor 20 . The first reduction gear 26 meshes with the motor gear 24 . The number of teeth of the first reduction gear 26 is greater than the number of teeth of the motor gear 24 .

The second reduction gear 28 is rotatably supported on the housing 12 by a pair of bearings 32 . The second reduction gear 28 is connected to the first reduction gear 26 via a one-way clutch 34 . The number of teeth of the second reduction gear 28 is smaller than the number of teeth of the first reduction gear 26 . At least a portion of the motor gear 24 and the second reduction gear 28 overlap with the first circuit board 50 in the direction perpendicular to the axial direction of the crankshaft 110a. The first circuit board 50 has a recess 50c in which the rotor shaft 20c is arranged.

The third reduction gear 30 meshes with the second reduction gear 28 . The number of teeth of the third reduction gear 30 is greater than the number of teeth of the second reduction gear 28 . The third reduction gear 30 is connected to the output member 40 . The driving force of the electric motor 20 is transmitted to the output member 40 by the reduction gear 22 . The driving force of the electric motor 20 transmitted to the output member 40 is transmitted to the front sprocket 114 via the connecting portion 40b. At least a portion of the third reduction gear 30 and the projecting portion 40c of the output member 40 overlap in the direction perpendicular to the axial direction of the crankshaft 110a.

The one-way clutch 34 is configured so as not to rotate the electric motor 20 by the human power driving force acting on the crankshaft 110a. In this embodiment, the one-way clutch 34 is provided between the first reduction gear 26 and the second reduction gear 28 . The arrangement position of the one-way clutch 34 is not limited to this, and may be anywhere on the speed reducer 22 .

The first member 12 a of the housing 12 has a plurality of protrusions 12 d arranged in a housing space 12 g formed inside the housing 12 . The first circuit board 50 is arranged in the accommodation space 12g. As shown in FIG. 2, the first circuit board 50 is fixed by screws 60 to the distal end portions of the projections 12d.

A central processing unit (CPU) that constitutes the control unit 70 and a storage unit are mounted on the first circuit board 50 (only shown in FIG. 5). The central processing unit executes computer programs. The computer program includes a basic control program such as an operation system (OS), and an application program that is started on the OS and implements a specific function. The storage unit includes a RAM and a ROM. The ROM stores computer programs and data for various controls. The RAM is provided with a processing area used when the central processing unit performs a series of processes. The controller 70 is configured to control the motor 20 . Control unit 70 includes an inverter circuit for driving motor 20 . The inverter circuit is mounted on the first circuit board 50 . Control unit 70 drives motor 20 in accordance with at least one of the signal from torque sensor 42 and the signal from rotation speed sensor 46 .

As shown in FIGS. 6 and 7, the second circuit board 52 is provided on the first member 12a. In this embodiment, the second circuit board 52 is provided near the outer peripheral edge of the first member 12a. The second circuit board 52 is preferably provided near the outer peripheral edge of the first member 12a around the crankshaft 110a. The second circuit board 52 faces part of the first circuit board 50 . The second circuit board 52 is arranged to extend substantially parallel to the first circuit board 50 .

As shown in FIGS. 4, 5 and 9, the second circuit board 52 has a cable connection portion 76 to which an electrical cable is connected. In this embodiment, the second circuit board 52 is provided with two cable connections 76 . The second circuit board 52 includes a third board surface 52a and a fourth board surface 52b. The third board surface 52 a faces the first circuit board 50 . The fourth board surface 52b faces the side opposite to the third board surface 52a in the thickness direction of the second circuit board 52 . In this embodiment, the cable connecting portion 76 is provided on the fourth board surface 52b of the second circuit board 52 . The cable connecting portion 76 includes a connecting portion 76a penetrating through the second circuit board 52 in the thickness direction. The connecting portion 76a is fixed to the second circuit board 52 by soldering. The connecting portion 76 a is electrically connected to printed wiring formed on the second circuit board 52 . The cable connecting portion 76 is exposed outside the housing 12 . The cable connecting portion 76 penetrates through the first member 12 a of the housing 12 . The first member 12a of the housing 12 is formed with a through hole through which the cable connecting portion 76 passes. The through-hole of the housing 12 is formed in the lateral side of the housing 12 in the left-right direction of the bicycle 100 . A cover member 78 is fixed to the outer peripheral portion of the housing 12 with screws 80 . Through holes 78 a are formed in the cover member 78 at positions corresponding to the respective cable connection portions 76 .

The cable connecting portion 76 is exposed outside the housing 12 . In this embodiment, the cable connecting portion 76 is exposed to the outside of the housing 12 through a through hole 78 a of the cover member 78 . A first electric cable is detachably connected to one of the two cable connecting portions 76 , and a second electric cable is detachably connected to the other of the two cable connecting portions 76 . In this embodiment, the first electric cable is configured to electrically connect the operation unit 130 and the control unit 70 . In this embodiment, the second electrical cable is configured to electrically connect the rear derailleur 122 and the controller 70 . The number of cable connection portions 76 is not limited to two, and may be one or three or more.

A plurality of conductive plates 82 are further provided on the second circuit board 52 . A plurality of conductive plates 82 are provided on the fourth board surface 52 b of the second circuit board 52 . The ends of the plurality of conductive plates 82 pass through the second circuit board 52 in the thickness direction and are fixed to the second circuit board 52 by soldering. The plurality of conductive plates 82 are electrically connected to printed wiring formed on the second circuit board 52 . The screws 80 are configured to respectively fix a pair of wirings connected to the lamps to a pair of conductive plates 82 extending from the second circuit board 52 .

As shown in FIGS. 4-7, the first board connecting portion 56 connects the first circuit board 50 and the second circuit board 52 . The first board connection portion 56 includes a first electrical connection portion 86 and a second electrical connection portion 88 . The first electrical connection 86 is provided directly on the first circuit board 50 . The first circuit board 50 includes a first board surface 50a and a second board surface 50b. The first board surface 50 a faces the third board surface 52 a of the second circuit board 52 . The second board surface 50b faces the side opposite to the first board surface 50a in the thickness direction of the first circuit board 50 . The first electrical connection portion 86 is provided on the first board surface 50 a of the first circuit board 50 . A second electrical connection 88 is provided directly on the second circuit board 52 . The second electrical connection portion 88 is provided on the third board surface 52 a of the second circuit board 52 . The second electrical connection portion 88 is electrically connected to the first electrical connection portion 86 by direct contact. The first electrical connection portion 86 is electrically connected to the control portion 70 on the first circuit board 50 . The second electrical connection portion 88 is electrically connected to the cable connection portion 76 on the second circuit board 52 .

In this embodiment, the first electrical connection portion 86 and the second electrical connection portion 88 are configured by connectors 86a and 88a, respectively. Connectors 86a, 88a each include one or more electrically conductive terminals and a retaining member that retains the electrical terminals. The holding member is made of an electrically insulating material such as resin. In this embodiment, connectors 86a and 88a each include a plurality of electrical terminals. By fitting the holding member of the connector 88a into the holding member of the connector 86a, the electrical terminals of the connector 86a and the electrical terminals of the connector 88a are brought into direct contact and electrically connected. When attaching the first circuit board 50 to the first member 12a, by pressing the first circuit board 50 toward the second circuit board 52 with the connectors 86a and 88a facing each other, the connector 86a and the connector 88a are pressed. connector 88a is connected. The electrical terminals of the connector 86 a are electrically connected to the printed wiring of the first circuit board 50 . The connector 86a is fixed to the first circuit board 50 by soldering. The electrical terminals of the connector 88 a are electrically connected to the printed wiring of the second circuit board 52 . The connector 88a is fixed to the second circuit board 52 by soldering. One of the connector 86a and the connector 88a is configured by a male connector, and the other of the connector 86a and the connector 88a is configured by a female connector.

Preferably, the distance L1 between the portion of the first circuit board 50 where the first electrical connection portion 86 is provided and the portion of the second circuit board 52 where the second electrical connection portion 88 is provided is 15 mm or less. be. The distance L1 may be greater than 15mm.

The operation unit 130 and the control unit 70 are communicably connected via the first electric cable, the second circuit board 52 , the first board connection part 56 and the first circuit board 50 . In this embodiment, the operation unit 130 and the control unit 70 are connected by power line communication (PLC). The control unit 70 and the rear derailleur 122 are communicatively connected via the first circuit board 50, the first board connection part 56, the second circuit board 52 and the second electric cable.

When the rider of bicycle 100 operates operating unit 130 , a signal such as a shift signal is transmitted from operating unit 130 to control unit 70 . Control unit 70 transmits a control signal to rear derailleur 122 when the signal from operation unit 130 is a shift signal. Rear derailleur 122 operates upon receiving a control signal from control unit 70 .

The operation unit 130 may include, in addition to the shifter, an assist mode change switch capable of changing the assist ratio, which is the ratio of the assist force by the electric motor 20 to the human-powered driving force. In this case, for example, an operation signal corresponding to the operation of the assist mode change switch is transmitted to the control section 70 via the communication unit 48 which will be described later. The control unit 70 receives an operation signal from the operation unit 130 and controls the electric motor 20 so as to enter an assist mode corresponding to the operation signal. The operation signal may be transmitted to the control section 70 via a first electric cable or a third electric cable different from the first electric cable and the second electric cable. When the operation signal is transmitted to the control section 70 via the third electric cable, the second circuit board 52 is provided with a cable connection section to which the third electric cable is connected.

In this embodiment, as shown in FIG. 8, the second circuit board 52 has a resin molded portion 74. As shown in FIG. Specifically, as shown in FIGS. 6 to 8, the first member 12a of the housing 12 is provided with an upright wall portion 12e that protrudes into an accommodating space 12g inside the housing 12. As shown in FIG. The standing wall portion 12 e is formed so as to surround the second circuit board 52 . The standing wall portion 12 e extends in the thickness direction of the second circuit board 52 . The resin mold portion 74 is formed by filling resin in the space where the vertical wall portion 12 e surrounds the second circuit board 52 . The resin mold portion 74 covers the entire portion of the third board surface 52 a of the second circuit board 52 excluding the second electrical connection portion 88 . The resin mold portion 74 is provided so as to cover the surface of the housing 12 around the second circuit board 52 . The resin molded portion 74 can prevent liquid such as water from entering the internal space of the housing 12 from the outside of the housing 12 through the gap between the second circuit board 52 and the housing 12 . The second circuit board 52 may be fixed to the first member 12a of the housing 12 by a fastener such as a screw, or may be fixed to the first member 12a of the housing 12 by an adhesive. It may be fixed to the first member 12a of the housing 12 by the resin molded portion 74 without using it.

A torque sensor 42 (see FIG. 3) is provided on the outer peripheral surface of the output member 40 to detect the human power driving force input to the crankshaft 110a. In this embodiment, the torque sensor 42 is composed of a strain sensor. The torque sensor 42 is connected to a sensor board (not shown) that rotates together with the output member 40 . This sensor substrate is provided with a transmission unit that wirelessly transmits a signal from the torque sensor 42 .

In this embodiment, as shown in FIGS. 4 and 10, the third circuit board 54 is formed in a ring shape so as to surround the crankshaft 110a. At least a part of the third circuit board 54 is opposed to a part of the first circuit board 50 , like the second circuit board 52 . Like the second circuit board 52 , the third circuit board 54 is arranged so as to extend substantially parallel to the first circuit board 50 . Third circuit board 54 is preferably secured to housing 12 . A plurality of through holes 54 c are formed in the outer peripheral portion of the third circuit board 54 . The third circuit board 54 is fixed to the first member 12a by, for example, inserting a screw through each through hole 54c.

The third circuit board 54, as shown in FIG. 10, has a receiving unit 44 that receives a wireless signal from a torque sensor 42 that detects the human driving force input to the crankshaft 110a. The receiving unit 44 is an example of the radio unit 43 in the present invention. The radio unit 43 has a receiving unit 44 for receiving a radio signal from a second sensor that detects the manpower driving force input to the crankshaft 110a of the manpower-driven vehicle 100, and a communication for transmitting/receiving a radio signal to/from an external device. At least one of the units 48 is included. The receiving unit 44 includes a receiving coil antenna. The third circuit board 54 includes a fifth board side 54a and a sixth board side 54b. The fifth board surface 54 a faces the first board surface 50 a of the first circuit board 50 . The sixth board surface 54b faces the side opposite to the first board surface 50a in the thickness direction of the third circuit board 54 . The receiving coil antenna of the receiving unit 44 is preferably provided on the sixth board surface 54b of the third circuit board 54, as shown in FIG. 10, for example.

The third circuit board 54 further has a rotational speed sensor 46 for detecting the rotational speed of the crankshaft 110a, as shown in FIG. The rotational speed sensor 46 may be provided on the first circuit board 50 . Rotational speed sensor 46 detects rotation of a magnet attached to crankshaft 110 a or output member 40 . The rotational speed sensor 46 is preferably provided on the sixth board surface 54b of the third circuit board 54. As shown in FIG.

The third circuit board 54 further comprises a communication unit 48 for transmitting and receiving radio signals to and from an external device provided on the bicycle 100 outside the drive unit 10, as shown in FIG. An example of an external device is the operation unit 130 . Communication unit 48 is an example of radio unit 43 in the present invention. Communication unit 48 includes a communication antenna. The communication unit 48 is provided on the fifth board surface 54a of the third circuit board 54, for example, as shown in FIG. The external device may be an electronic device such as a smart phone, tablet computer, and personal computer.

A magnetostrictive torque sensor may be used instead of the torque sensor 42 that is a strain sensor. In this case, the sensor board, the transmission unit, and the reception unit 44 can be omitted. In this case, the third circuit board 54 has a magnetostrictive torque sensor, which is an example of the sensor 41 of the present invention. The third circuit board 54 may have the receiving unit 44 in addition to the magnetostrictive torque sensor. In this case, the receiving unit 44 receives radio signals from sensors other than the torque sensor 42 .

The second board connecting portion 58 connects at least one of the first circuit board 50 and the second circuit board 52 to the third circuit board 54 . In this embodiment, as shown in FIGS. 4 and 5, the second board connecting portion 58 connects the first circuit board 50 and the third circuit board 54 . The second board connection portion 58 includes a third electrical connection portion 90 and a fourth electrical connection portion 92 . The third electrical connection portion 90 is provided directly on at least one of the first circuit board 50 and the second circuit board. In this embodiment, the third electrical connection portion 90 is provided directly on the first circuit board 50 . Specifically, the third electrical connection portion 90 is provided on the first board surface 50 a of the first circuit board 50 . The fourth electrical connection portion 92 is provided directly on the third circuit board 54 . The fourth electrical connection portion 92 is provided on the fifth board surface 54 a of the third circuit board 54 . The fourth electrical connection portion 92 is electrically connected to the third electrical connection portion 90 by direct contact. The third electrical connection portion 90 is electrically connected to the control portion 70 on the first circuit board 50 . The fourth electrical connection portion 92 is electrically connected to the receiving unit 44 , the rotational speed sensor 46 and the communication unit 48 on the third circuit board 54 .

The third electrical connection portion 90 and the fourth electrical connection portion 92 are configured by connectors 90a and 92a, respectively. One of connector 90a and connector 92a has the same configuration as one of connector 86a and connector 88a, and the other of connector 90a and connector 92a has the same configuration as the other of connector 86a and connector 88a. The shape and size of connector 90a and connector 92a may differ from the shape and size of connector 86a and connector 88a. The electrical terminals of the connector 90 a are electrically connected to the printed wiring of the first circuit board 50 . The connector 90a is fixed to the first circuit board 50 with solder. The electrical terminals of the connector 92 a are electrically connected to the printed wiring of the third circuit board 54 . The connector 92a is fixed to the third circuit board 54 by soldering.

In this embodiment, the distance L2 between the portion of the first circuit board 50 where the third electrical connection portion 90 is provided and the portion of the third circuit board 54 where the fourth electrical connection portion 90 is provided is 15 mm. It is below. The distance L2 and the distance L1 may be the same. In this case, the third electrical connection portion 90 and the fourth electrical connection portion 90 can be configured with the same connectors as the first electrical connection portion 86 and the second electrical connection portion 88, respectively.

In this embodiment, the control unit 70, the receiving unit 44, the rotation speed sensor 46, and the communication unit 48 can communicate with each other via the first circuit board 50, the second board connection part 58, and the third circuit board 54. connected to

Detection signals from the torque sensor 42 and the rotation speed sensor 46 are input to the control unit 70 via the third circuit board 54 , the second board connection part 58 and the first circuit board 50 . The control unit 70 controls the electric motor 20 based on these detection signals. If the operation unit 130 includes an assist mode change switch, for example, an operation signal from the assist mode change switch is input to the control unit 70 via the communication unit 48 . The controller 70 controls the electric motor 20 based on the operation signal.

According to the drive unit 10, for example, the following effects can be obtained.

By pressing the first electrical connection portion 86 of the first circuit board 50 toward the second electrical connection portion 88 of the second circuit board 52, the first circuit board 50 and the second circuit board 52 are easily connected. be able to.

The configuration of the present invention is not limited to the above embodiment, but includes various other configurations.

For example, in the above-described embodiment, the first electrical connection portion 86 and the second electrical connection portion 88 of the first board connection portion 56 are configured by the connectors 86a and 88a, respectively, but the configuration is not limited to this. The first electrical connection portion 86 and the second electrical connection portion 88 may be configured by non-flexible members 86b and 88b, respectively, as shown in FIG. 11, for example. With one end of the non-flexible member 86b fixed to the first circuit board 50, the other ends of the non-flexible members 86b and 88b are provided along the first board surface 50a of the first circuit board 50. 86b and 88b are members in which the amount of deflection of the non-flexible members 86b and 88b is equal to or less than a predetermined value when a predetermined force is applied in the opposite direction. Accordingly, non-flexible members 86b, 88b in the present invention do not include electrical cables. The non-flexible members 88b, 88b are made of conductive metal members, for example. In the example of FIG. 11, the non-flexible member 86b is configured by a rod-shaped member, and the non-flexible member 88b is configured by a cylindrical member. One end of the non-flexible member 86b is inserted into a hole formed in the first circuit board 50 and fixed to the first circuit board 50 by soldering, for example. The inflexible member 86b is electrically connected to the printed wiring of the first circuit board 50. As shown in FIG. The inflexible member 88b is secured to the second circuit board 52 with at least a portion thereof disposed in a hole formed in the second circuit board 52 . The non-flexible member 88b may be configured by a via hole formed in the second circuit board 52. FIG. The inflexible member 86b is inserted into the inflexible member 88b so that the inflexible members 86b, 88b are in direct contact with each other and electrically connected. With this configuration, by pressing the first circuit board 50 toward the second circuit board 52, the non-flexible members 86b and 88b can be easily connected in the same manner as the connectors 86a and 88a.

The third electrical connection portion 90 and the fourth electrical connection portion 92 of the second board connection portion 58 are made of non-flexible members, similarly to the first electrical connection portion 86 and the second electrical connection portion 88, respectively. may

The second board connecting portion 58 may connect at least one of the first circuit board 50 and the second circuit board 52 to the third circuit board 54 .

In the above embodiment, only the second circuit board 52 has the resin mold portion 74, but at least one of the first circuit board 50 and the second circuit board 52 may have the resin mold portion. Furthermore, at least one of the first circuit board 50, the second circuit board 52, and the third circuit board 54 may have a resin molded portion.

At least one of the first circuit board 50 and the second circuit board 52 may have a cable connection portion 76 to which an electric cable is connected. At least one of the first circuit board 50 and the second circuit board 52 includes at least one of the cable connection portion 76 to which an electric cable is connected, the sensor 41, and the wireless unit 43 that performs at least one of transmission and reception of wireless signals. You may have one. Sensor 41 includes at least one of a first sensor that detects the rotational speed of crankshaft 110a of human-powered vehicle 100 and a second sensor that detects the human-powered driving force input to crankshaft 110a. In this embodiment, the rotational speed sensor 46 is an example of a first sensor, and the torque sensor 42 is an example of a second sensor. At least one of the first circuit board 50, the second circuit board 52, and the third circuit board 54 includes the cable connection portion 76, the sensor 41, and the wireless unit 43 that performs at least one of transmission and reception of wireless signals. may have at least one of In this case, sensor 41 includes at least one of torque sensor 42 and rotational speed sensor 46 . Radio unit 43 includes at least one of receiving unit 44 and communication unit 48 .

The drive unit 10 may include only the first circuit board 50 and the second circuit board 52 out of the three circuit boards 50 , 52 , 54 . In this case, the third circuit board 54 and the second board connecting portion 58 are omitted. It is sufficient that one of the first circuit board 50 and the second circuit board 52 has at least one of the cable connection section 76 , the sensor 41 and the wireless unit 43 . It is sufficient that one of the first circuit board 50 and the second circuit board 52 has a resin mold portion. The housing 12 has a crankshaft support portion 16 that supports the crankshaft 110a of the manpowered vehicle 100, and accommodates the first circuit board 50, the second circuit board 52, and the first board connection portion 56. Just do it.

Drive unit 10 may include four or more circuit boards. In this case, the four or more circuit boards include at least two of first circuit board 50 , second circuit board 52 and third circuit board 54 .

In the above embodiment, the first circuit board 50 and the second circuit board 52 are connected, and the first circuit board 50 and the third circuit board 54 are connected, but the present invention is not limited to this form. The second circuit board 52 and the third circuit board 54 may be connected.

The first electrical connection portion 86, the second electrical connection portion 88, the third electrical connection portion 90, and the fourth electrical connection portion 92 may each be configured by a connector or a non-flexible member.

Components for human-powered vehicles are not limited to drive units. Components for human-powered vehicles include, for example, operating devices configured to be mounted on human-powered vehicles, transmissions, display devices configured to be mounted on human-powered vehicles, including a battery unit, suspension, and seatpost configured to

The drive unit may be provided on the wheel. In this case, the crankshaft support portion 16 is omitted.

At least one of the first circuit board 50 and the second circuit board 52 may be provided with a power supply section to which power is supplied from the battery unit 140 . The power supply may have a configuration similar to that of the cable connection.

The second circuit board 52 may be arranged such that the third board surface 52 a faces the second board surface 50 b of the first circuit board 50 . In this case, the third electrical connection portion 90 is provided on the second board surface 50 b of the first circuit board 50 .

The above embodiments are merely examples, and should not be construed as limiting the scope of the present invention. The scope of the present invention is defined by the scope of claims, and all variations and modifications within the equivalent scope of the claims are within the scope of the invention.

10: drive unit (component for human-powered vehicle), 12: housing, 16: crankshaft support, 42: torque sensor (second sensor), 43: wireless unit, 44: receiving unit, 46: rotational speed sensor (first sensor), 48: communication unit, 50: first circuit board, 52: second circuit board, 54: third circuit board, 56: first board connection part, 58: second board connection part, 74: resin mold part , 76: cable connection portion, 86: first electrical connection portion, 86a: connector, 86b: non-flexible member, 88: second electrical connection portion, 88a: connector, 88b: non-flexible member, 90 90a: connector; 90b: non-flexible member; 92: fourth electrical connection; 92a: connector; )

Claims (20)

A human powered vehicle component configured to be attached to a human powered vehicle to assist in propulsion of said human powered vehicle, comprising :
a first circuit board;
a second circuit board;
a first board connecting portion that connects the first circuit board and the second circuit board;
The first substrate connecting portion is
a first electrical connection directly provided on the first circuit board;
a second electrical connection portion provided directly on the second circuit board and electrically connected to the first electrical connection portion by direct contact;
the first electrical connection portion and the second electrical connection portion are each configured by a connector or a non-flexible member;
The second circuit board has a resin mold portion and a cable connection portion,
the cable connecting portion is exposed to the outside from a through hole formed in a housing that accommodates the second circuit board;
A component for a human-powered vehicle , wherein the resin molded portion is formed to fill a gap between the second circuit board and the housing . a third circuit board;
a second board connecting portion that connects at least one of the first circuit board and the second circuit board to the third circuit board;
The second board connecting portion is
a third electrical connection directly provided on at least one of the first circuit board and the second circuit board;
a fourth electrical connection portion provided directly on the third circuit board and electrically connected to the third electrical connection portion by direct contact;
2. The human powered vehicle component of claim 1, wherein said third electrical connection and said fourth electrical connection are each constituted by a connector or a non-flexible member. 3. The claim 1 or 2, wherein at least one of the first circuit board and the second circuit board has at least one of a sensor and a radio unit for at least one of transmitting and receiving radio signals. of human-powered vehicle components. further comprising the housing;
4. The human powered vehicle component of claim 3 , wherein the housing encloses the first circuit board and the first board connection . 5. The sensor includes at least one of a first sensor that detects a rotation speed of a crankshaft of the manpower-driven vehicle and a second sensor that detects a manpower driving force input to the crankshaft. A component for a human-powered vehicle as described in . The wireless unit includes a receiving unit for receiving a wireless signal from a second sensor that detects the human-powered driving force input to the crankshaft of the human-powered vehicle, and a communication unit for transmitting/receiving the wireless signal to/from an external device. 5. A human powered vehicle component according to claim 3 or 4 comprising at least one. further comprising the housing;
4. The housing according to any one of claims 1 to 3 , wherein the housing has a crankshaft support portion that supports a crankshaft of the manpower-driven vehicle, and further accommodates the first circuit board and the first board connection portion. A component for a human powered vehicle according to any one of the preceding paragraphs. A human powered vehicle component configured to be attached to a human powered vehicle to assist in propulsion of said human powered vehicle, comprising :
a first circuit board, a second circuit board and a third circuit board;
a first board connecting portion that connects the first circuit board and the second circuit board;
a second board connecting portion that connects at least one of the first circuit board and the second circuit board to the third circuit board;
The first substrate connecting portion is
a first electrical connection directly provided on the first circuit board;
a second electrical connection portion provided directly on the second circuit board and electrically connected to the first electrical connection portion by direct contact;
The second board connecting portion is
a third electrical connection directly provided on at least one of the first circuit board and the second circuit board;
a fourth electrical connection portion provided directly on the third circuit board and electrically connected to the third electrical connection portion by direct contact;
the first electrical connection portion, the second electrical connection portion, the third electrical connection portion, and the fourth electrical connection portion are each configured by a connector or a non-flexible member;
A component for a human-powered vehicle , wherein the third circuit board is formed to surround a crankshaft of the human-powered vehicle. At least one of the first circuit board, the second circuit board, and the third circuit board performs at least one of a cable connection to which an electric cable is connected, a sensor, and wireless signal transmission and reception. 9. The human powered vehicle component of claim 8, comprising at least one of the radio units. further comprising a housing that accommodates the first circuit board, the second circuit board, the third circuit board, the first board connection part, and the second board connection part;
10. The human powered vehicle component of claim 9, wherein the cable connection is exposed to the exterior of the housing. 11. The sensor includes at least one of a first sensor that detects a rotational speed of a crankshaft of the manpower-driven vehicle and a second sensor that detects a manpower driving force input to the crankshaft. A component for a human-powered vehicle as described in . The wireless unit includes a receiving unit for receiving a wireless signal from a second sensor that detects the human-powered driving force input to the crankshaft of the human-powered vehicle, and a communication unit for transmitting/receiving the wireless signal to/from an external device. 11. A human powered vehicle component according to claim 9 or 10 comprising at least one. a crankshaft supporting portion for supporting a crankshaft of the manpower-driven vehicle, the first circuit board, the second circuit board, the third circuit board, the first board connection part, and the second board connection part; 10. A human powered vehicle component according to claim 8 or 9, further comprising a housing for receiving. A human powered vehicle component configured to be attached to a human powered vehicle to assist in propulsion of said human powered vehicle, comprising:
an electric motor;
a first circuit board;
a second circuit board;
a first board connecting portion that connects the first circuit board and the second circuit board;
the second circuit board includes a third board surface and a fourth board surface;
the third substrate surface faces the first circuit substrate;
the fourth substrate surface faces the side opposite to the third substrate surface in the thickness direction of the second circuit substrate;
The first substrate connecting portion is
a first electrical connection directly provided on the first circuit board;
a second electrical connection portion provided directly on the second circuit board and electrically connected to the first electrical connection portion by direct contact;
the first electrical connection portion and the second electrical connection portion are each configured by a connector or a non-flexible member;
at least one of the first circuit board and the second circuit board has a cable connection portion to which an electric cable is detachably connected;
The cable connection portion is provided on the fourth board surface, and is externally connected to a housing that accommodates the first circuit board, the second circuit board, and the first board connection portion by a human power different from the electric motor. A component for a human-powered vehicle that is exposed to be connectable with a component for a powered vehicle. 15. The human powered vehicle component of claim 14, further comprising said housing. at least one of the first circuit board and the second circuit board further having a sensor;
16. The sensor includes at least one of a first sensor that detects a rotation speed of a crankshaft of the manpower-driven vehicle and a second sensor that detects a manpower driving force input to the crankshaft. A component for a human-powered vehicle as described in . at least one of the first circuit board and the second circuit board further having a wireless unit that performs at least one of transmitting and receiving wireless signals;
The wireless unit includes a receiving unit for receiving a wireless signal from a second sensor that detects the human-powered driving force input to the crankshaft of the human-powered vehicle, and a communication unit for transmitting/receiving the wireless signal to/from an external device. 16. A human powered vehicle component according to claim 14 or 15 comprising at least one. further comprising the housing;
15. The human powered vehicle component of claim 14, wherein the housing has a crankshaft support for supporting a crankshaft of the human powered vehicle. A human powered vehicle component configured to be attached to a human powered vehicle, comprising:
a first circuit board;
a second circuit board;
a first board connecting portion that connects the first circuit board and the second circuit board;
a housing having a crankshaft support portion that supports a crankshaft of the manpowered vehicle, housing the first circuit board, the second circuit board, and the first board connection portion, and provided with an electric motor; including
The first substrate connecting portion is
a first electrical connection directly provided on the first circuit board;
a second electrical connection portion provided directly on the second circuit board and electrically connected to the first electrical connection portion by direct contact;
the first electrical connection portion and the second electrical connection portion are each configured by a connector or a non-flexible member ;
The first circuit board has a control unit that controls the electric motor,
The second circuit board includes a magnetostrictive torque sensor that detects the human driving force input to the crankshaft, and a receiving unit that receives wireless signals from the torque sensor that detects the human driving force input to the crankshaft. or a component for a man-powered vehicle, comprising a rotation speed sensor for detecting the rotation speed of said crankshaft . 3. The distance between a portion of the first circuit board where the first electrical connection is provided and a portion of the second circuit board where the second electrical connection is provided is 15 mm or less. A component for a human powered vehicle according to any one of claims 1-19.

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