JP7199219B2 - hub - Google Patents

Description

The present disclosure relates to hubs.

Hub dynamos are known for powering components mounted on human powered vehicles. For example, Patent Literature 1 describes a hub provided with electronic components that control the power of a power generation section.

JP 2018-95215 A

By the way, electronic components with low heat resistance are preferably provided away from the power generation section. In the hub of Patent Literature 1, an electronic component is housed in a rotating body having a sprocket attached to its outer peripheral surface. Therefore, the electronic component of Patent Document 1 is provided away from the power generation section provided on the hub body. However, since a large electronic component such as a power storage unit is accommodated in the rotating body, the diameter of the portion of the rotating body that accommodates the electronic component is increased. This complicates assembly of the hub and attachment of the sprocket to the rotor.

One of the objects of the present disclosure is to provide a hub for miniaturizing the rotating body.

A hub according to a first aspect of the present disclosure is a hub provided in a manpowered vehicle, comprising a hub axle, a hub body rotatable about the hub axle, and connected to the hub body rotatably about the hub axle. a first electronic component at least partially housed in the hub body; and a second electronic component at least partially housed in the rotor so as to be electrically connected to the first electronic component. and an electronic component.

According to the hub on the first side, since the electronic parts are divided into the hub main body and the rotating body, large electronic parts and the like can be accommodated in the hub main body as the first electronic parts, and the electronic parts with low heat resistance and the crank can be accommodated. An electronic component or the like for detecting the number of revolutions can be accommodated in the rotating body as the second electronic component. This makes it possible to reduce the size of the rotating body.

In the second side hub according to the first side, the first electronic component includes a power storage device.

According to the hub on the second side, since the power storage device is provided in the hub body, it is possible to reduce the size of the rotating body.

In a third side hub according to the first or second side, said first electronic component comprises a controller for controlling a bicycle transmission.

According to the hub on the third side, since the control device is provided in the hub body, it is possible to downsize the rotating body.

A fourth side hub according to any one of the first to third sides, wherein said first electronic component includes a sensor for detecting an attitude of said manpowered vehicle.

According to the hub on the fourth side, since the sensor is provided on the hub body, the rotating body can be miniaturized.

The hub of the fifth aspect according to any one of the first to fourth aspects, wherein the first electronic component comprises a wireless communication device.

According to the hub of the fifth aspect, since the wireless communication device is provided in the hub body, the rotating body can be miniaturized.

In the hub of the sixth side according to any one of the first to fifth sides, the hub shaft and the rotor are rotatably supported between the first electronic component and the second electronic component. Further provided are bearings.

According to the hub on the sixth side, the second electronic component is provided separately from the first electronic component, so that each electronic component can be provided at a suitable position based on the properties and functions of the electronic component.

In the hub of the seventh side following the sixth side, said first electronic component is connected to an external device via a first cable passing inside said bearing.

According to the hub on the seventh side, wiring of the first cable can be simplified.

In the hub of the eighth side according to the sixth or seventh side, said second electronic component is connected with said first electronic component via a second cable passing inside said bearing.

According to the hub on the eighth side, wiring of the second cable can be simplified.

In the hub of the ninth side according to any one of the first to eighth sides, the first electronic component is fixed to the hub axle.

According to the hub on the ninth side, the first electronic component can be easily attached.

In a tenth side hub according to any one of the first to ninth sides, said second electronic component is configured not to rotate with respect to said first electronic component.

According to the hub on the tenth side, connection between the first electronic component and the second electronic component can be simplified.

In the eleventh side hub according to the tenth side, the second electronic component includes a sensor for detecting rotation of the rotating body.

According to the hub on the eleventh side, the rotation speed of the rotating body can be measured.

In the twelfth side hub according to the eleventh side, the sensor is configured to detect a detected portion provided on the rotating body.

According to the hub on the twelfth side, the number of revolutions of the rotating body can be measured.

In the hub of the thirteenth side according to the twelfth side, the detected part includes a magnet, and the sensor is configured to detect the magnetic force of the magnet.

According to the hub on the thirteenth side, the rotation speed of the rotating body can be measured by magnetic force.

The hub of the 14th side according to any one of the 1st to 13th sides includes a power generating section configured to generate power by relative rotation between the hub shaft and the hub body.

According to the hub of the fourteenth aspect, power can be generated with a simple configuration.

In the hub of the fifteenth side according to the fourteenth side, the power generation section includes a stator provided on the hub axle and a rotor provided on the hub body.

According to the hub of the fifteenth aspect, power can be generated with a simple configuration.

In the hub of the 16th side according to any one of the 1st to 15th sides, the rotating body is configured to be capable of supporting a sprocket.

According to the hub on the 16th side, the sprocket can be easily attached because the rotating body is small.

In the hub of the seventeenth side according to any one of the first to sixteenth sides, the rotating body is configured to transmit rotation of the rotating body in the first rotational direction to the hub body, and the rotating body , so as not to transmit the rotation of the rotating body in a second rotating direction opposite to the first rotating direction to the hub body.

According to the hub of the seventeenth aspect, even if the rotating body is small, it is possible to configure the rotating body to transmit rotation in the first direction to the hub body and not transmit rotation in the second direction to the hub body. can.

According to the present disclosure, it is possible to reduce the size of the rotating body.

1 is a schematic diagram of a manpowered vehicle including a hub according to an embodiment; FIG. It is a sectional view of a hub concerning an embodiment. 1 is a block diagram of a power supply system including a hub according to an embodiment; FIG. It is an exploded sectional view of a hub concerning an embodiment.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The present invention is not limited by the embodiment, and when there are multiple embodiments, the invention includes a configuration in which each embodiment is combined. For example, although the embodiment describes the case where the human-powered vehicle is a bicycle, the human-powered vehicle may be another human-powered vehicle.

The human-powered vehicle A according to the embodiment is a vehicle that can be driven at least by human power. The manpowered vehicle A is not limited in the number of wheels, and includes, for example, one-wheeled vehicles and vehicles with three or more wheels. Human-powered vehicles A include various types of bicycles, such as mountain bikes, road bikes, city bikes, cargo bikes, handcycles and recumbents, as well as electric bicycles (E-bikes). Electric bicycles include power-assisted bicycles that assist the propulsion of the vehicle with an electric motor. Human-powered vehicles A do not include vehicles that use only motive power other than human power. In particular, a vehicle using only an internal combustion engine as a motive power is not included in a human-powered vehicle. Usually, the human-powered vehicle A is assumed to be a small light vehicle, and a vehicle that does not require a license for driving on public roads.

As shown in FIG. 1, the human powered vehicle A is a bicycle. Specifically, the illustrated human powered vehicle A is a road bike. The human-powered vehicle A includes a frame A1, a front fork A2, a front wheel WF, a rear wheel WR, a handle H, a driving member B, and a plurality of components CO. The manpowered vehicle A further includes a hub 10 including a power generation section 18 .

The driving member B includes a crank C, a first rotating body D1, a second rotating body D2, and a connecting member D3. The crank C has a crankshaft C1 and a plurality of crank arms C2. The crankshaft C1 is rotatably supported by the frame A1. The plurality of crank arms C2 are fixed to both ends of the crankshaft C1 in the axial direction. A pedal PD is rotatably attached to the tip of each crank arm C2. The drive member B of this embodiment is of the chain drive type, but can be selected from any type, and may be of the belt drive type or the shaft drive type.

The first rotating body D1 is provided on the crank C so as to rotate integrally with the crankshaft C1. The first rotating body D1 includes one or a plurality of sprockets having different numbers of teeth. When the first rotating body D1 includes multiple sprockets, the multiple sprockets are connected to each other. The second rotating body D2 is provided on the hub 10 of the rear wheel WR. The second rotating body D2 includes one or a plurality of sprockets D21 having different numbers of teeth. A plurality of sprockets D21 are connected to each other. The connecting member D3 includes a chain. The connecting member D3 transmits the force input to the crank C from the first rotating body D1 to the second rotating body D2. The connecting member D3 is wound around the first rotating body D1 and the second rotating body D2. A driving force applied to the pedals PD by a user riding in the manpowered vehicle A is transmitted to the rear wheels WR via the first rotating body D1, the connecting member D3, and the second rotating body D2.

The plurality of components CO includes operated devices that operate according to inputs to the operating device OP. The multiple components CO of this embodiment include a transmission T, a braking device BD, a suspension SU, an adjustable seat post ASP, and a driving assistance device E. Various external components CO are not limited to this embodiment. A plurality of components CO may include at least one component CO. The transmission T, the braking device BD, the suspension SU, the adjustable seat post ASP, and the driving assist device E each include a movable member and an actuator that operates the movable member. Actuators include, for example, electric motors. The components CO are supplied with, for example, power supplied from the hub 10 including the power generation unit 18, power supplied from the battery BT mounted on the human-powered vehicle A, or supplied from a dedicated power supply mounted on each component CO. It operates by electric power etc.

Transmission T includes an external transmission. In this embodiment, the transmission T includes a front derailleur TF and a rear derailleur TR. The front derailleur TF is provided near the first rotating body D1 of the frame A1. The gear ratio of the manpowered vehicle A is changed by changing the sprocket of the first rotating body D1 around which the connecting member D3 is wound by the front derailleur TF. A rear derailleur TR is provided at the rear end of the frame A1. The gear ratio of the manpowered vehicle A is changed by changing the sprocket D21 of the second rotating body D2 around which the connecting member D3 is wound by the rear derailleur TR. The transmission T operates, for example, in response to operation of a shift operation device, a brake operation device, a shift operation device in which a shift operation device and a brake operation device are integrated, or a shift/brake operation device. Transmission T may include an internal transmission.

The braking devices BD include braking devices BD corresponding to the number of wheels. In this embodiment, the braking devices BD are provided for the front wheels WF and the rear wheels WR. The two braking devices BD may have the same configuration or may have different configurations. Braking device BD is, for example, a rim brake device. The braking device BD operates, for example, according to the operation of the brake operating device or the shift/brake operating device. The braking device BD may be a disc braking device.

Suspension SU includes at least one of a front suspension and a rear suspension. In this embodiment, the suspension SU includes a front suspension. The front suspension operates so as to reduce the impact that the front wheels WF receive from the ground. The rear suspension operates so as to reduce the impact that the rear wheel WR receives from the ground. Suspension SU is electrically driven, for example, according to the operation of the suspension operating device. Specifically, the operating state of the suspension SU is changed according to the operation of the suspension operating device. The operating state of suspension SU includes at least one of displacement state, travel amount, damping force, and repulsive force.

Adjustable seatpost ASP changes the height of saddle SD relative to frame A1. The adjustable seat post ASP operates, for example, according to the operation of an adjustable seat post operation device.

The travel assistance device E outputs an auxiliary drive force for assisting the propulsive force of the manpower-driven vehicle A. FIG. The driving assistance device E operates, for example, according to the driving force applied to the pedal PD. The driving assistance device E operates, for example, according to the operation of the driving assistance operating device. The travel assistance device E includes an electric motor, which is an actuator, and a housing. An electric motor is housed in the housing.

The operating device OP operates components CO mounted on the manpowered vehicle A. FIG. A user's operation is input to the operating device OP. The operating device OP includes, for example, at least one of a shift/brake operating device, a suspension operating device, an adjustable seat post operating device, and a driving assistance operating device.

As shown in FIG. 2, hub 10 is a hub dynamo. The hub 10 is provided on the rear wheel WR in this embodiment. The hub 10 is attached to the frame A1 in this embodiment. The hub 10 includes a hub shaft 12 , a hub body 14 , a rotating body 16 , a power generation section 18 , a first electronic component 20 , a second electronic component 22 , a bearing 24 , a bearing 26 , a bearing 28 , and a bearing 30 . , provided. Hub 10 further comprises a first cable 32 and a second cable 34 .

The hub axle 12 is provided in a cylindrical shape. The center axis CA of the hub axle 12 coincides with the rotation axis of the rear wheel RW. Hub axle 12 is attached to the rear end of frame A1, for example, by a known fixing mechanism. The fixing mechanism includes a connecting shaft 36. As shown in FIG. The connecting shaft 36 is inserted through the inner side of the hub axle 12 .

The hub body 14 is provided in a cylindrical shape. The hub body 14 is spaced apart from the hub axle 12 in the radial direction. The hub body 14 is rotatably provided around the hub axle 12 . The hub body 14 is rotatably supported with respect to the hub axle 12 via bearings 24 . The rotation axis of the hub body 14 coincides with the central axis CA of the hub axle 12 . The hub main body 14 is arranged side by side with the rotor 16 in an axial direction parallel to the center axis CA of the hub axle 12 . The hub body 14 includes a tubular portion 14a, a boss portion 14b, and a pair of flange portions 14c and 14d.

The tubular portion 14a is provided in a cylindrical shape. A power generation unit 18 and a first electronic component 20 are provided radially inside the cylindrical portion 14a.

The boss portion 14b is provided in a cylindrical shape. The boss portion 14b is provided with a diameter smaller than that of the cylindrical portion 14a. The boss portion 14b is provided integrally with the cylindrical portion 14a. The boss portion 14b is provided so as to axially protrude from one end of the cylindrical portion 14a in the axial direction. The boss portion 14b is provided on the side opposite to the rotor 16 with respect to the cylindrical portion 14a. A bearing 24 is provided radially inside the boss portion 14b.

The flange portions 14c and 14d are provided in an annular shape. The flange portions 14c and 14d are spaced apart from each other in the axial direction. The flange portions 14c and 14d are provided so as to protrude radially outward from both end portions of the cylindrical portion 14a. The flange portion 14c is provided on the rotating body 16 side so as to protrude radially outward from the outer peripheral surface of the cylindrical portion 14a. The flange portion 14d is provided on the side of the boss portion 14b so as to protrude radially outward from the outer peripheral surface of the cylindrical portion 14a. Spokes of the rear wheel RW are attached to the flange portions 14c and 14d.

The rotating body 16 is provided in a cylindrical shape. A second electronic component 22 is provided radially inside the rotor 16 . The rotating body 16 is provided radially spaced apart from the hub axle 12 . The rotating body 16 is rotatably provided around the hub axle 12 . Rotating body 16 is rotatably supported with respect to hub axle 12 via bearing 26 , transmission member 38 and bearing 28 . The rotation axis of the rotor 16 coincides with the center axis CA of the hub axle 12 and the rotation axis of the hub body 14 . The rotor 16 includes ratchet teeth 16a. The ratchet teeth 16a are formed in the circumferential direction on the inner peripheral surface of the hub body 14 side. The rotating body 16 is provided side by side with the hub main body 14 in an axial direction parallel to the central axis CA of the hub axle 12 . The rotating body 16 is connected to the hub body 14 . Rotating body 16 is connected to hub body 14 via transmission member 38 and bearing 30 .

The transmission member 38 includes a large diameter portion 38a, a small diameter portion 38b, and a wall portion 38c. The large diameter portion 38a is provided in a cylindrical shape. The large diameter portion 38 a is provided radially inside the hub body 14 . The small diameter portion 38b is provided in a cylindrical shape. The small-diameter portion 38 b is provided radially inside the rotating body 16 . The wall portion 38c is provided in an annular shape. The wall portion 38c is provided so as to protrude radially outward from the end portion of the small diameter portion 38b on the large diameter portion 38a side. The wall portion 38c is provided so as to protrude radially inward from the end portion of the large diameter portion 38a on the side of the small diameter portion 38b. The transmission member 38 is fixed to the hub body 14 by a fixing member 40 . The fixing member 40 is provided in an annular shape. The fixing member 40 is provided so as to cover the wall portion 38c of the transmission member 38 at the end portion of the hub body 14 on the rotating body 16 side. A ratchet pawl 42 is provided on the small diameter portion 38b of the transmission member 38 so as to be able to swing. The ratchet pawl 42 is formed in the circumferential direction on the outer peripheral surface of the small diameter portion 38b. The ratchet pawl 42 meshes with the ratchet teeth 16 a of the rotating body 16 .

The rotating body 16 is configured to be able to support the plurality of sprockets D21 of the second rotating body D2. The rotating body 16 is configured to rotate integrally with the plurality of sprockets D21. The rotating body 16 is configured to transmit the rotation of the rotating body 16 in the first rotation direction R1 to the transmission member 38 via the ratchet teeth 16a and the ratchet pawl 42 . That is, the rotating body 16 is configured to transmit the rotation of the rotating body 16 in the first rotation direction R<b>1 to the hub body 14 . The rotating body 16 is configured not to transmit the rotation of the rotating body 16 in the second rotating direction R2 opposite to the first rotating direction R1 to the transmission member 38 via the ratchet teeth 16a and the ratchet pawl 42 . That is, the rotating body 16 is configured so as not to transmit the rotation of the rotating body 16 in the second rotation direction R2 to the hub body 14 . The first rotation direction R1 is the direction in which the second rotating body D2 rotates when the driving force is transmitted from the connecting member D3 to the second rotating body D2.

The power generation portion 18 is configured to generate power through relative rotation between the hub axle 12 and the hub body 14 . The power generation portion 18 is provided between the hub axle 12 and the hub body 14 in the radial direction. More specifically, the power generation portion 18 is provided between the hub axle 12 and the tubular portion 14a of the hub body 14 in the radial direction. The power generation unit 18 is arranged side by side with the first electronic component 20 in the axial direction. The power generation section 18 is provided closer to the flange section 14 d than the first electronic component 20 . The power generation unit 18 includes a stator 18a, a rotor 18b, and a coil 18c.

The stator 18 a is provided on the hub axle 12 . The center axis of the stator 18 a coincides with the center axis CA of the hub axle 12 . Stator 18 a rotates together with hub axle 12 . The stator 18a is provided radially inside the rotor 18b.

The rotor 18b is provided in a cylindrical shape. The rotor 18 b is provided on the hub body 14 . The rotor 18b is fixed to the inner peripheral surface of the cylindrical portion 14a of the hub body 14. As shown in FIG. The rotation axis of rotor 18 b coincides with the center axis CA of hub axle 12 and the rotation axis of hub body 14 . The rotor 18b rotates integrally with the hub body 14. As shown in FIG. The rotor 18b is provided radially outside the stator 18a.

The coil 18c is provided on the stator 18a. As the rotor 18b rotates together with the hub body 14, an electromagnetic force is generated between the stator 18a and the rotor 18b, and an induced electromotive force is generated in the coil 18c. Coil 18 c is electrically connected to first electronic component 20 . A current flowing through the coil 18 c is supplied to the first electronic component 20 .

When the rider applies a driving force to the pedal PD shown in FIG. 1 to rotate the first rotating body D1 in the forward rotation direction, the second rotating body D2 rotates in the first rotation direction R1 via the connecting member D3. do. The positive rotation direction is the direction in which the first rotating body D1 rotates so that the manpowered vehicle A moves forward. The rotating body 16 rotates integrally with the second rotating body D2 in the first rotation direction R1. Rotation of the rotating body 16 is transmitted to the hub body 14 via the transmission member 38 . The rotor 18b rotates integrally with the hub body 14 around the stator 18a. Due to the relative rotation between the rotor 18b and the stator 18a, an induced electromotive force is generated in the coil 18c. That is, the power generation unit 18 generates power as the human-powered vehicle A travels.

The first electronic component 20 is fixed to the hub axle 12 . The first electronic component 20 is provided between the hub axle 12 and the hub body 14 in the radial direction. The first electronic component 20 is at least partially housed in the hub body 14 . The first electronic component 20 is provided on the rotor 16 side with respect to the power generation section 18 .

As shown in FIG. 2 , the first electronic component 20 is housed in the internal space of the housing 44 . The housing 44 is provided between the hub axle 12 and the tubular portion 14a of the hub body 14 in the radial direction. The housing 44 includes an outer tubular portion 44a, an inner tubular portion 44b, and a wall portion 44c. The internal space of the housing 44 is defined by an outer tubular portion 44a, an inner tubular portion 44b, and a pair of wall portions 44c and 44d.

The outer tubular portion 44a is provided in a tubular shape. The outer tubular portion 44a is provided radially outward of the inner tubular portion 44b. The outer tubular portion 44a is provided to be spaced apart from the tubular portion 14a of the hub body 14 in the radial direction.

The inner tubular portion 44b is provided in a tubular shape. The inner tubular portion 44b is provided radially inward of the outer tubular portion 44a. The inner peripheral surface of the inner cylindrical portion 44b is fixed to the outer peripheral surface of the hub axle 12. As shown in FIG. The inner cylindrical portion 44b rotates integrally with the hub axle 12. As shown in FIG.

The wall portion 44c and the wall portion 44d are provided in an annular shape. The wall portion 44c and the wall portion 44d are spaced apart from each other in the axial direction. The wall portion 44c is provided so as to cover the openings of the outer tubular portion 44a and the inner tubular portion 44b, which are ends on the power generating portion 18 side, in the axial direction. The wall portion 44d is provided so as to cover the openings of the outer tubular portion 44a and the inner tubular portion 44b, which are ends on the rotating body 16 side, in the axial direction.

As shown in FIG. 3, the first electronic component 20 is electrically connected to the coil 18c of the power generation section 18. As shown in FIG. The first electronic component 20 is electrically connected to the external device ED. The first electronic component 20 is electrically connected to the second electronic component 22 . Hub 10 further comprises a first cable 32 and a second cable 34 . The first electronic component 20 is connected to the external device ED via the first cable 32 . The external device ED includes multiple components CO. As shown in FIG. 2, the first cable 32 is provided so as to pass inside the bearings 26, 28 and 30 in the radial direction. As shown in FIG. 3 , the first electronic component 20 is connected to the second electronic component 22 via the second cable 34 . As shown in FIG. 2, the second cable 34 is provided so as to pass inside the bearings 26, 28 and 30 in the radial direction. As shown in FIG. 3, the first electronic component 20 includes a power storage device 20a, a control device 20b, a sensor 20c, and a wireless communication device 20d. Power storage device 20a, control device 20b, sensor 20c, and wireless communication device 20d are provided, for example, on an electronic board. The electronic board is fixed to the housing 44 .

The power storage device 20a is configured to temporarily store the power generated by the power generation unit 18 . Power storage device 20a includes at least one of a battery and a capacitor. The power storage device 20 a supplies power to the external device ED and the second electronic component 22 . The power storage device 20a supplies power to the control device 20b, the sensor 20c, and the wireless communication device 20d.

The controller 20 b performs various controls in the hub 10 . The control device 20b may perform, for example, power control of the power generation unit 18, power storage control of the power storage device 20a, signal control of the sensor 20c and the wireless communication device 20d, and the like. The control device 20b controls the transmission T of the manpowered vehicle A. As shown in FIG. The control device 20b may transmit a signal for automatically shifting the transmission T to the transmission T based on a signal from a sensor 22a of the second electronic component 22, which will be described later.

The sensor 20c detects the attitude of the manpowered vehicle A. As shown in FIG. The sensor 20c is an inclination sensor that detects the inclination of the manpowered vehicle A, for example. The sensor 20c may be an acceleration sensor that detects gravitational acceleration.

Wireless communication device 20d wirelessly communicates with power storage device 20a, control device 20b, and sensor 20c, for example. The wireless communication device 20d wirelessly communicates with at least one component CO, for example.

As shown in FIG. 2 , the second electronic component 22 is fixed to the hub axle 12 . The second electronic component 22 is provided between the hub axle 12 and the rotor 16 in the radial direction. The second electronic component 22 is at least partially housed in the rotating body 16 . The second electronic component 22 is provided spaced apart from the first electronic component 20 . Bearing 26 , bearing 28 and bearing 30 are provided between first electronic component 20 and second electronic component 22 in the axial direction. The second electronic component 22 is configured not to rotate with respect to the first electronic component 20 . The second electronic component 22 is fixed to the first electronic component 20 via the hub axle 12 and the housing 44 . As shown in FIG. 3 , the second electronic component 22 is electrically connected to the first electronic component 20 . The second electronic component 22 is connected to the first electronic component 20 via the second cable 34 .

The second electronic component 22 includes a sensor 22a. The sensor 22a detects rotation of the rotating body 16 . Sensor 22a is, for example, a cadence sensor. The control device 20b of the first electronic component 20 measures the rotation speed of the crank C based on the rotation of the rotor 16 relative to the hub axle 12 detected by the sensor 22a. The sensor 22 a is configured to detect the detected portion 46 . As shown in FIG. 2 , the detected portion 46 is provided on the rotating body 16 . The detected portion 46 is fixed to the inner peripheral surface of the rotating body 16 . The detected portion 46 is provided on the opposite side of the hub body 14 with respect to the second electronic component 22 in the axial direction. The part to be detected 46 is provided spaced apart from the sensor 22a in the axial direction. The detected portion 46 includes a magnet 48 . Sensor 22 a is configured to detect the magnetic force of magnet 48 .

The bearing 24 is provided radially inside the boss portion 14 b of the hub body 14 . The bearing 24 rotatably supports the hub body 14 with respect to the hub axle 12 . The bearing 24 includes an inner ring 24a, an outer ring 24b, and multiple rolling elements 24c. The inner ring 24 a is provided on the hub axle 12 . The inner ring 24 a is fixed to the outer peripheral surface of the hub axle 12 . The center axis of the inner ring 24 a coincides with the center axis CA of the hub axle 12 . The inner ring 24 a rotates integrally with the hub axle 12 . Outer ring 24 b is provided on hub body 14 . The outer ring 24b is fixed to the inner peripheral surface of the boss portion 14b of the hub body 14. As shown in FIG. The center axis of the outer ring 24 b coincides with the center axis CA of the hub axle 12 and the rotation axis of the hub body 14 . The outer ring 24b rotates integrally with the hub body 14. As shown in FIG. The rolling elements 24c are provided between the inner ring 24a and the outer ring 24b.

The bearing 26 is provided radially inside the rotor 16 . The bearing 26 rotatably supports the transmission member 38 with respect to the hub axle 12 . The bearing 26 includes an inner ring 26a, an outer ring 26b, and multiple rolling elements 26c. The inner ring 26 a is provided on the hub axle 12 . The inner ring 26 a is fixed to the outer peripheral surface of the hub axle 12 . The center axis of the inner ring 26 a coincides with the center axis CA of the hub axle 12 . The inner ring 26 a rotates together with the hub axle 12 . The outer ring 26b is fixed to the transmission member 38. As shown in FIG. The center axis of the outer ring 26 b coincides with the center axis CA of the hub axle 12 and the rotation axis of the transmission member 38 . The outer ring 26b rotates integrally with the transmission member 38. As shown in FIG. The outer ring 26b is provided integrally with the inner ring 28a of the bearing 28 in this embodiment. The rolling elements 26c are provided between the inner ring 26a and the outer ring 26b.

The bearing 28 is provided radially inside the rotor 16 . The bearing 28 rotatably supports the rotor 16 with respect to the transmission member 38 . The bearing 28 includes an inner ring 28a, an outer ring 28b, and multiple rolling elements 28c. The inner ring 28 a is fixed to the transmission member 38 . The center axis of the inner ring 28 a coincides with the center axis CA of the hub axle 12 and the rotation axis of the transmission member 38 . The inner ring 28 a rotates integrally with the transmission member 38 . The inner ring 28a is provided integrally with the outer ring 26b of the bearing 26 in this embodiment. The outer ring 28 b is provided on the rotating body 16 . The outer ring 28 b is fixed to the inner peripheral surface of the rotating body 16 . The center axis of the outer ring 28 b coincides with the center axis CA of the hub axle 12 and the rotation axis of the rotor 16 . The outer ring 28b rotates integrally with the rotating body 16. As shown in FIG. The rolling elements 26c are provided between the inner ring 26a and the outer ring 26b.

The bearing 30 is provided radially inside the rotor 16 . The bearing 30 rotatably supports the rotor 16 with respect to the transmission member 38 . The bearing 30 includes an inner ring 30a, an outer ring 30b, and multiple rolling elements 30c. The inner ring 30a is provided integrally with the transmission member 38 in this embodiment. The outer ring 30b is provided integrally with the rotating body 16 in this embodiment. The rolling elements 30c are provided between the inner ring 30a and the outer ring 30b.

As shown in FIG. 4, in this embodiment the hub 10 includes three units. The three units include a first unit 10A, a second unit 10B and a third unit 10C. The first unit 10A includes the hub body 14, the rotor 18b of the power generating section 18, the outer ring 24b of the bearing 24, and the rolling elements 24c. The second unit 10B includes the hub shaft 12, the stator 18a of the power generation section 18, the coil 18c, the first electronic component 20, and the housing 44. The third unit 10C includes a rotor 16, a bearing 28, a bearing 30, a transmission member 38, and a ratchet pawl 42.

An assembler first assembles the first unit 10A, the second unit 10B, and the third unit 10C. Next, the assembler inserts the hub axle 12 of the second unit 10B radially inward of the transmission member 38 and the rotating body 16 of the third unit 10C, thereby joining the second unit 10B and the third unit 10C together. assemble. As shown in FIG. 2, the wall portion 44d of the housing 44 and the wall portion 38c of the transmission member 38 are spaced apart from each other. After assembling the second unit 10B and the third unit 10C, the assembler attaches the stator 18a, the coil 18c, the first electronic component 20 and the housing 44 of the second unit 10B to the hub body 14 of the first unit 10A. Insert radially inward. Thereby, the second unit 10B, the third unit 10C, and the first unit 10A are assembled. The first unit 10A and the third unit 10C are fixed by a fixing member 40 shown in FIG.

The bearing 26, the second electronic component 22, and the detected portion 46 shown in FIG. 2 are attached at least after the second unit 10B and the third unit 10C are assembled. The fixing member 40 and the inner ring 24a of the bearing 24 shown in FIG. 2 are attached at least after assembling the first unit 10A with the second unit 10B and the third unit 10C.

Since the second unit 10B of the hub 10 includes the first electronic component 20, failure of the first electronic component 20 is suppressed and workability is improved. The assembly process of the hub 10 is not limited to this embodiment. When the hub 10 includes a plurality of units, the assembling workability is improved, which contributes to miniaturization.

Although the embodiments of the present invention have been described above, the embodiments are not limited by the contents of these embodiments. In addition, the components described above include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those within the so-called equivalent range. Furthermore, the components described above can be combined as appropriate. Furthermore, various omissions, replacements, or modifications of components can be made without departing from the gist of the above-described embodiments.

A: human-powered vehicle, 10: hub, 12: hub shaft, 14: hub body, 16: rotating body, 18: power generation unit, 18a: stator, 18b: rotor, 20: first electronic component, 20a: power storage device, 20b: control device, 20c: sensor, 20d: wireless communication device, 22: second electronic component, 22a: sensor, 24, 26, 28, 30: bearing, 32: first cable, 34: second cable, 46: Detected part 48: magnet D21: sprocket CA: center axis R1: first rotation direction R2: second rotation direction ED: external device

Claims (17)

A hub provided on a human-powered vehicle,
hub axle;
a hub body rotatable around the hub axis;
a rotating body connected to the hub body so as to be rotatable about the hub axis;
a power generating section provided between the hub axle and the hub body in the radial direction and configured to generate power by relative rotation between the hub axle and the hub body;
a first electronic component at least partially housed in the hub body;
a second electronic component that is electrically connected to the first electronic component and includes a sensor that detects rotation of the rotating body and a detected part that is detected by the sensor ;
A hub in which the power generation section, the first electronic component, and the detected section are arranged in this order in an axial direction parallel to the central axis of the hub shaft . A hub provided on a human-powered vehicle,
hub axle;
a hub body rotatable around the hub axis;
a rotating body connected to the hub body so as to be rotatable about the hub axis;
a first electronic component at least partially housed in the hub body;
a second electronic component at least partially housed in the rotor so as to be electrically connected to the first electronic component;
A hub , comprising: a bearing provided between the first electronic component and the second electronic component so as to rotatably support the hub shaft and the rotating body. 3. The hub of claim 2 , wherein said first electronic component is connected to an external device via a first cable that runs inside said bearing. 4. A hub according to claim 2 or 3 , wherein said second electronic component is connected to said first electronic component via a second cable passing inside said bearing. 5. The hub according to any one of claims 1 to 4 , wherein said first electronic component includes a power storage device. 5. A hub according to any one of claims 1 to 4, wherein the first electronic component comprises a controller for controlling a bicycle derailleur. 7. The hub according to any one of claims 1 to 6 , wherein said first electronic component includes a sensor for detecting attitude of said manpowered vehicle. 8. The hub of any one of claims 1-7 , wherein the first electronic component comprises a wireless communication device. The hub according to any one of claims 1 to 8, wherein said first electronic component is fixed to said hub axle. 10. A hub according to any preceding claim, wherein the second electronic component is configured not to rotate with respect to the first electronic component. 11. The hub according to claim 10, wherein said second electronic component includes a sensor that detects rotation of said rotating body. 12. The hub according to claim 11, wherein said sensor is configured to detect a detected portion provided on said rotating body. The detected part includes a magnet,
13. The hub of Claim 12, wherein the sensor is configured to detect the magnetic force of the magnet. 14. The hub according to any one of claims 1 to 13, comprising a power generating portion configured to generate power by relative rotation between the hub axle and the hub body. 15. The hub according to claim 14, wherein said power generation section includes a stator provided on said hub axle and a rotor provided on said hub body. 16. The hub according to any one of claims 1 to 15, wherein said rotating body is configured to be capable of supporting a sprocket. the rotating body is configured to transmit rotation of the rotating body in a first rotational direction to the hub body;
17. The body of rotation according to any one of claims 1 to 16, wherein the body of rotation is configured not to transmit rotation of the body of rotation in a second direction of rotation opposite to the first direction of rotation to the hub body. hub.

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