Electrical components for human-powered vehicles

Abstract

An electrical component for a human-powered vehicle is provided, the electrical component comprising: a circuit board, at least one conductor, and at least one capacitor. The circuit board has an arcuate shape and has a first circumferential end, a second circumferential end, and at least one arcuate edge extending at least partially from the first circumferential end to the second circumferential end. The at least one conductor is configured to extend from one of the first circumferential end and the second circumferential end. The at least one capacitor is electrically connected to the at least one conductor. The electrical component can further provide a compact arrangement of components in a hub body.

Description

[0001] This divisional application is a divisional application of Chinese Invention Patent Application No. 202111482085.8, entitled "Wheel Hub Assembly for Human-Powered Vehicles", filed on December 7, 2021. Technical Field

[0002] This disclosure generally relates to a wheel hub assembly for human-powered vehicles. Background Technology

[0003] Some wheels used in human-powered vehicles (e.g., bicycles) have a hub, multiple spokes, and annular rims. The hub has a hub axle that is non-rotatably mounted to the frame of the human-powered vehicle. The hub has a hub body that is coaxially connected to the hub axle, such that the hub body is arranged radially outward relative to the hub axle. Bearings are constructed and arranged to support the hub body, allowing the hub body to rotate freely about the hub axle. In almost all types of bicycles except for fixed-gear and track racing bicycles, the bicycle wheel (usually the rear wheel) has a bicycle freewheel, which is arranged on the hub of the wheel. The bicycle freewheel typically functions as a one-way clutch, thus transmitting torque only in one direction. Therefore, the use of a freewheel allows the bicycle to move forward freely without any pedal rotation (i.e., during gliding). During gliding, the bicycle freewheel is considered to be in a free-spinning state, in which the bicycle wheel can rotate freely while the sprocket remains stationary. Summary of the Invention

[0004] In general, this disclosure relates to various features of wheel assemblies for human-powered vehicles. As used herein, the term "human-powered vehicle" refers to a vehicle that can be driven by at least human power, but excludes vehicles that use only power sources other than human power. In particular, vehicles that use only an internal combustion engine as their driving power are not included in human-powered vehicles. Human-powered vehicles are generally assumed to be compact, light vehicles that often do not require a permit to operate on public roads. The number of wheels on a human-powered vehicle is not limited. Human-powered vehicles include, for example, unicycles and vehicles with three or more wheels. Human-powered vehicles include, for example, various types of bicycles such as mountain bikes, road bikes, city bikes, freight bikes, and recumbent bikes, as well as electric-assisted bicycles (E-bikes).

[0005] In view of the state of the prior art and according to a first aspect of this disclosure, a wheel hub assembly for a human-powered vehicle is provided. The wheel hub assembly essentially includes a hub axle, a hub body, a bearing spacer, and a first hub body bearing. The hub body is rotatably mounted on the hub axle to rotate about a rotational central axis of the wheel hub assembly. The bearing spacer has an inner circumferential end disposed to the hub axle and an outer circumferential end radially spaced outward from the inner circumferential end relative to the rotational central axis. The first hub body bearing is disposed at the outer circumferential end of the bearing spacer and rotatably supports the hub body.

[0006] Using the wheel assembly according to the first aspect, the wheel assembly can be configured to easily accommodate additional components in the wheel body.

[0007] According to a second aspect of this disclosure, the hub assembly according to the first aspect is configured such that: the bearing spacer includes an axial opening, which, in the mounted state of the hub assembly to a human-powered vehicle, is at least partially formed in an angular region defined between a horizontally forward direction and a vertically upward direction perpendicular to the horizontally forward direction. The central angle defined by the horizontally forward direction and the vertically upward direction is equal to ninety degrees. The horizontally forward direction and the vertically upward direction extend from the axis of rotation.

[0008] By utilizing the wheel hub assembly according to the second aspect, it is possible to reduce the weight of the wheel hub assembly without compromising its durability.

[0009] According to a third aspect of this disclosure, the wheel hub assembly according to the first or second aspect further includes: a circuit board disposed in the wheel hub body; and a sensor disposed in the wheel hub body. The sensor is electrically connected to the circuit board via a first conductor.

[0010] By utilizing the wheel hub assembly according to the third aspect, various information about the wheel hub assembly can be obtained using circuit boards and sensors.

[0011] According to a fourth aspect of this disclosure, the hub assembly according to the third aspect is configured such that the sensor is arranged in a direction parallel to the axis of rotation at a position separate from the circuit board.

[0012] By utilizing the hub assembly according to the fourth aspect, the sensor can be placed in the optimal position.

[0013] According to a fifth aspect of this disclosure, the hub assembly according to the fourth aspect is configured such that the circuit board is arranged perpendicular to the axis of rotation.

[0014] By utilizing the hub assembly according to the fifth aspect, it is possible to increase the freedom of component arrangement and facilitate the compact layout of circuit boards.

[0015] According to a sixth aspect of this disclosure, the hub assembly according to any one of the third to fifth aspects is configured such that: the bearing spacer includes an axial opening, and the sensor is disposed at an axially aligned position within the axial opening of the bearing spacer.

[0016] The detection capability of the sensor may be improved by utilizing the hub assembly according to the sixth aspect.

[0017] According to the seventh aspect of this disclosure, the hub assembly according to any one of the third to sixth aspects is configured such that the circuit board is electrically connected to the capacitor via a second conductor.

[0018] By utilizing the hub assembly according to the seventh aspect, it is possible to supply power to the circuit board when the human-powered vehicle is stopped.

[0019] According to the eighth aspect of this disclosure, the hub assembly according to the seventh aspect is configured such that: the circuit board has an arcuate shape and has a first circumferential end, a second circumferential end and at least one arcuate edge, the at least one arcuate edge extending at least partially from the first circumferential end to the second circumferential end, and a second conductor extending from one of the first circumferential end and the second circumferential end.

[0020] By utilizing the hub assembly according to aspect eight, it is possible to provide a compact arrangement of components within the hub body.

[0021] According to the ninth aspect of this disclosure, the hub assembly according to the eighth aspect is configured such that at least one arcuate edge includes at least one of an inner arcuate edge and an outer arcuate edge relative to the rotation center axis.

[0022] The wheel hub assembly according to aspect nine may further provide a compact arrangement of components within the wheel hub body.

[0023] According to a tenth aspect of this disclosure, the hub assembly according to the eighth or ninth aspect further includes a housing disposed in the hub body and having an outer peripheral surface defining an internal space, wherein the circuit board is disposed in the internal space.

[0024] Using the hub assembly according to aspect ten, the circuit board may be protected more reliably.

[0025] According to the eleventh aspect of this disclosure, the hub assembly according to the tenth aspect is configured such that the housing is non-rotatable relative to the hub shaft.

[0026] The components inside the housing may be more reliably protected by using the hub assembly according to aspect eleven.

[0027] According to the twelfth aspect of this disclosure, the hub assembly according to any one of the third to eleventh aspects is configured such that it further includes a second hub body bearing that rotatably supports one end of the hub body, and a first hub body bearing that rotatably supports the other end of the hub body relative to the rotation center axis.

[0028] The hub assembly according to the twelfth aspect can reliably support the hub body for rotation on the hub axle.

[0029] According to the thirteenth aspect of this disclosure, the hub assembly according to any one of the sixth to twelfth aspects further includes a sprocket support structure rotatably disposed about a rotational central axis to transmit a driving force to the hub body while rotating in the driving rotational direction about the rotational central axis.

[0030] Using the hub assembly according to aspect thirteen, the sprocket support structure is used as a flywheel to allow the sprocket support structure to stop rotating during gliding.

[0031] According to the fourteenth aspect of this disclosure, the hub assembly according to the thirteenth aspect further includes a detected portion connected to a sprocket support structure, and a sensor including a rotation detection sensor configured to detect the detected portion, thereby detecting rotation of the sprocket support structure about a rotation center axis.

[0032] The rotation of the sprocket support structure can be reliably detected using the hub assembly according to aspect fourteen.

[0033] According to aspect fifteen of this disclosure, the hub assembly according to aspect thirteen further includes a first sprocket support bearing and a second sprocket support bearing. The first sprocket support bearing rotatably supports a first end of the sprocket support structure. The second sprocket support bearing rotatably supports a second end of the sprocket support structure. Both the first and second sprocket support bearings have an outer diameter smaller than the outer peripheral end of the bearing spacer.

[0034] By utilizing the hub assembly according to aspect fifteen, it is possible to reliably support the sprocket support structure for rotation while minimizing weight.

[0035] According to the sixteenth aspect of this disclosure, the hub assembly according to any one of the first to fifteenth aspects further includes a generator disposed on the hub body and configured to generate electricity by rotation of the hub body.

[0036] Using the hub assembly according to aspect sixteen, electricity may be generated when the hub body rotates.

[0037] According to the seventeenth aspect of this disclosure, an electrical component for a human-powered vehicle is provided, the electrical component comprising a circuit board, at least one conductor, and at least one capacitor. The circuit board has an arcuate shape. The circuit board has a first circumferential end, a second circumferential end, and at least one arcuate edge, the at least one arcuate edge extending at least partially from the first circumferential end to the second circumferential end. The at least one conductor is configured to extend from one of the first circumferential end and the second circumferential end. The at least one capacitor is electrically connected to the at least one conductor.

[0038] By utilizing the electrical components according to the seventeenth aspect, it is possible to further provide a compact arrangement of components within the hub body.

[0039] According to the eighteenth aspect of this disclosure, the electrical component according to the seventeenth aspect further includes a sensor disposed at a location separate from the circuit board; and another conductor electrically connecting the sensor and the circuit board.

[0040] The rotation of the sprocket support structure can be detected using electrical components according to aspect 18.

[0041] Furthermore, other objects, features, aspects, and advantages of the disclosed wheel hub assembly will become apparent to those skilled in the art from the following detailed description, which, in conjunction with the accompanying drawings, discloses preferred embodiments of the disclosed wheel hub assembly and the disclosed electrical components. Attached Figure Description

[0042] Now refer to the accompanying drawings that form part of this original disclosure:

[0043] Figure 1 It is a side view of a human-powered vehicle (i.e., a bicycle) equipped with a wheel hub assembly (i.e., a bicycle wheel hub assembly) according to the first embodiment;

[0044] Figure 2 It is attached to Figure 1 The longitudinal elevation view of the wheel hub assembly on the body of the human-powered vehicle shown.

[0045] Figure 3 yes Figure 1 A perspective view of the wheel hub assembly shown;

[0046] Figure 4 yes Figure 2 and Figure 3 The image shows a perspective view of the wheel hub assembly, but selected portions have been removed to show the bearing spacers;

[0047] Figure 5 It is along Figure 3 The section line seen in section 5-5 Figures 2 to 4 A longitudinal sectional view of the wheel hub assembly shown;

[0048] Figure 6 yes Figures 2 to 5 The image shows a perspective view of the wheel assembly, with some parts of the wheel hub cut out.

[0049] Figure 7 yes Figure 4 The image shows an end view of the wheel hub assembly, with selected portions removed to reveal the bearing spacer.

[0050] Figure 8 yes Figure 7 The image shows an end view of the wheel hub assembly, but the bearing spacer has been removed.

[0051] Figure 9 yes Figure 7 The image shows an end view of the wheel assembly, but the cover has been removed.

[0052] Figure 10 yes Figures 2 to 6 A perspective view of the electrical components, bearing spacers, and one of the wheel hub body bearings of the wheel hub assembly shown.

[0053] Figure 11 yes Figures 2 to 6 The diagram shows a partial exploded perspective view of the electrical components, bearing spacers, and one of the wheel hub body bearings of the wheel hub assembly; and

[0054] Figure 12 yes Figures 2 to 6 Partial exploded perspective view of the electrical components and bearing spacers shown. Detailed Implementation

[0055] The selected embodiments will now be explained with reference to the accompanying drawings. It will be apparent to those skilled in the art of human-powered vehicles (e.g., bicycles) that, based on this disclosure, the following description of the embodiments is for illustrative purposes only and is not intended to limit the invention as defined by the appended claims and their equivalents.

[0056] First refer to Figure 1A hub assembly 10 is provided to a human-powered vehicle V. In other words, the human-powered vehicle V (i.e., a bicycle) is illustrated as being equipped with a hub assembly 10 according to the illustrated embodiment. Here, in the illustrated embodiment, the hub assembly 10 is a bicycle hub. More specifically, the hub assembly 10 is the rear hub of a bicycle. Moreover, here, in the illustrated embodiment, the hub assembly 10 is a hub generator for providing electricity to one or more components of the bicycle V. However, the hub assembly 10 is not limited to a hub generator. In particular, certain aspects of the hub assembly 10 may be provided that do not generate electricity. Furthermore, although the hub assembly 10 is illustrated as a rear hub, certain aspects of the hub assembly 10 may be provided to a front hub. Therefore, the hub assembly 10 is not limited to a rear hub.

[0057] Here, bicycle V refers to an electric-assisted bicycle (E-bike). Alternatively, bicycle V can be a road bike, city bike, freight bike, and recumbent bike, or other types of off-road bikes, such as motocross bikes. (As in...) Figure 1 As seen in the diagram, the bicycle V comprises a frame VB supported by a rear wheel RW and a front wheel FW. The frame VB essentially consists of a front frame FB and a rear frame RB (swing arm). The frame VB also features handlebars H and a front fork FF for steering the front wheel FW. The rear frame RB is pivotally mounted to the rear portion of the front frame FB, allowing it to pivot relative to the front frame FB. The rear wheel RW is mounted to the rear end of the rear frame RB. A rear shock absorber RS ​​is operatively positioned between the front frame FB and the rear frame RB. The rear shock absorber RS, positioned between the front frame FB and the rear frame RB, controls the movement of the rear frame RB relative to the front frame RB. That is, the rear shock absorber RS ​​absorbs vibrations transmitted from the rear wheel RW. The rear wheel RW is rotatably mounted to the rear frame RB. The front wheel FW is mounted to the front frame FB via the front fork FF. That is, the front wheel FW is mounted to the lower end of the front fork FF. The height-adjustable seatpost ASP is conventionally mounted to the seat tube of the front frame FB and supports the bicycle saddle or saddle S in any suitable manner. The front fork FF is pivotally mounted to the head tube of the front frame FB. The handlebars H are mounted to the upper end of the steering column or steering tube of the front fork FF. The front fork FF absorbs vibrations transmitted from the front wheel FW. Preferably, the rear shock absorber RS ​​and the front fork FF are electrically adjustable suspensions. For example, the stiffness and / or travel length of the rear shock absorber RS ​​and the front fork FF can be adjusted.

[0058] The bicycle V also includes a drivetrain DT and an electric drive unit DU operatively connected to the drivetrain DT. Here, for example, the drivetrain DT is chain-driven and includes cranks C, a front sprocket FS, multiple rear sprockets CS, and a chain CN. Cranks C include a crankshaft CA1 and a pair of crank arms CA2. The crankshaft CA1 is rotatably supported to the front frame FB via the electric drive unit DU. The crank arms CA2 are located at opposite ends of the crankshaft CA1. Pedals PD are rotatably connected to the distal end of each crank arm CA2. The drivetrain DT can be selected from any type of drivetrain and can be belt-driven or shaft-driven.

[0059] The electric drive unit DU has an electric motor that provides driving assistance to the front sprocket FS. The electric drive unit DU can be actuated in a conventional manner to assist the propulsion of the bicycle V. For example, the electric drive unit DU can be actuated by the human driving force applied to the pedal PD. The electric drive unit DU is actuated by power supplied by the main battery pack BP, which is mounted on the undertube of the bicycle V. The main battery pack BP can supply power to other vehicle components such as the rear derailleur RD, the height-adjustable seatpost ASP, the rear shock absorber RS, the front fork FF, and any other electrically powered vehicle components.

[0060] The bicycle V also includes a bicycle speedometer SC. Here, the bicycle speedometer SC is mounted to the front frame FB. Alternatively, the bicycle speedometer SC may be mounted on the handlebars H. The bicycle speedometer SC informs the rider of various riding and / or operating conditions of the bicycle V. The bicycle speedometer SC may also include various control programs for automatically controlling one or more vehicle components. For example, the bicycle speedometer SC may be equipped with an automatic shifting program for changing the shifting of the rear derailleur RD based on one or more riding and / or operating conditions of the bicycle V.

[0061] Here, the bicycle V also includes a rear derailleur RD, which is attached to the rear frame RB for changing the chain CN between the rear sprockets CS. The rear derailleur RD is a shifting device. Here, the rear derailleur RD is an electric derailleur (i.e., an electric shifting device or an electric drive system). Here, the rear derailleur RD is located on the rear side of the rear frame RB and close to the hub assembly 10. The rear derailleur RD can be operated when the rider of the bicycle V manually operates the shifting device or the shifter SL. The rear derailleur RD can also be operated automatically based on the riding and / or operating conditions of the bicycle V. The bicycle V may also include multiple electronic components. During the power generation state as discussed herein, power generated by the hub assembly 10 can be supplied to some or all of the electronic components.

[0062] Now we will refer to it in particular Figures 2 to 6The structure of the wheel assembly 10 is described below. The wheel assembly 10 includes a hub axle 12 and a hub body 14. The hub axle 12 is configured to be non-rotatably attached to the vehicle body VB. In this embodiment, the hub axle 12 is configured to be non-rotatably attached to the rear frame body RB. The hub body 14 is rotatably mounted on the hub axle 12 to rotate about a rotational central axis A1 of the wheel assembly 10. The hub axle 12 has a central axis coaxial with the rotational central axis A1. The hub body 14 is rotatably disposed about the rotational central axis A1. In other words, the hub body 14 is rotatably mounted about the hub axle 12.

[0063] As in Figure 5 As seen in the diagram, the hub shaft 12 is a rigid member made of a suitable material, such as metal. Here, the hub shaft 12 is a tubular member. The hub shaft 12 has a first axial end 12a, a second axial end 12b, and an axial bore 12c. The axial bore 12c extends between the first axial end 12a and the second axial end 12b. The hub shaft 12 can be a one-piece member or made of several components. Here, the hub shaft 12 is provided with a first end member or end cap 16 and a second end member or end cap 18. The first end cap 16 is mounted to the first axial end 12a of the hub shaft 12. Figures 2 to 5 (left side of the wheel hub shaft 12), and the second end cap 18 is mounted to the second axial end 12b of the hub shaft 12. Figures 2 to 5 (Right side of the image). For example, the first end cap 16 is screwed into the first axial end 12a of the hub shaft 12, and the second end cap 18 is fastened to the second axial end 12b of the hub shaft 12 by a fixing bolt 20 screwed into the axial hole 12c of the hub shaft 12. Thus, as in... Figure 2 As seen in the diagram, the first end cap 16 and the fixing bolt 20 are received in the mounting opening of the rear frame RB. Here, the second end cap 18 includes a rotation limiting member 18a, which is also received in one of the mounting openings of the rear frame RB. The rotation limiting member 18a engages with the rear frame RB, thereby limiting the rotation of the hub axle 12 relative to the rear frame RB.

[0064] Here, as in Figure 2 and Figure 5As seen in the diagram, the wheel hub assembly 10 also includes a wheel retaining mechanism 22 for securing the wheel hub axle 12 of the wheel hub assembly 10 to the rear frame RB. The wheel retaining mechanism 22 essentially includes an axle or sprocket 22a, a cam body 22b, a cam rod 22c, and an adjusting nut 22d. The cam rod 22c is attached to one end of the sprocket 22a via the cam body 22b, while the adjusting nut 22d is screwed onto the other end of the sprocket 22a. The cam rod 22c is attached to the cam body 22b. The cam body 22b is coupled between the sprocket 22a and the cam rod 22c to allow the sprocket 22a to move relative to the cam body 22b. Therefore, the cam rod 22c is operated to move the sprocket 22a relative to the cam body 22b in the axial direction of the rotational axis A1, thereby changing the distance between the cam body 22b and the adjusting nut 22d. Preferably, a compression spring is provided at each end of the sprocket 22a. Alternatively, the hub axle 12 may be non-rotatably attached to the rear frame RB by other attachment structures as needed and / or desired.

[0065] like Figure 1 , Figure 3 and Figure 4 As shown, the hub body 14 is rotatably mounted about the hub shaft 12 to rotate along the drive rotation direction D1. The drive rotation direction D1 corresponds to the forward drive direction of the rear wheel RW. The hub body 14 is configured to support the rear wheel RW in a conventional manner. More specifically, in the illustrated embodiment, the hub body 14 includes a first outer flange 14a and a second outer flange 14b. The first outer flange 14a and the second outer flange 14b extend radially outward from the outer peripheral surface of the hub body 14 relative to the rotation center axis A1. The first outer flange 14a and the second outer flange 14b are configured to receive multiple spokes ( Figure 1 The multiple spokes are used to rim the rear wheel (RW). Figure 1 It is attached to the wheel hub body 14. In this way, the wheel hub body 14 and the rear wheel RW are connected to rotate together.

[0066] As in Figure 5As seen in the diagram, the wheel hub assembly 10 also includes a first wheel hub body bearing 24. The first wheel hub body bearing 24 rotatably supports the wheel hub body 14. Preferably, the wheel hub assembly 10 further includes a second wheel hub body bearing 26 rotatably supporting one end of the wheel hub body 14. The first wheel hub body bearing 24 rotatably supports the other end of the wheel hub body 14 relative to the rotation center axis A1. The first wheel hub body bearing 24 includes a first inner ring 24a, a first outer ring 24b, and a plurality of first roller elements 24c. The first roller elements 24c are disposed between the first inner ring 24a and the first outer ring 24b. The second wheel hub body bearing 26 includes a second inner ring 26a, a second outer ring 26b, and a plurality of second roller elements 26c. The second roller elements 26c are disposed between the second inner ring 26a and the second outer ring 26b. The first wheel hub body bearing 24 and the second wheel hub body bearing 26 are radial ball bearings.

[0067] Here, the hub assembly 10 also includes a bearing spacer 28. The bearing spacer 28 is disposed on the hub shaft 12 and supports the hub body 14 via a second hub body bearing 26. The bearing spacer 28 supports the second hub body bearing 26. The bearing spacer 28 has an inner peripheral end 28a disposed on the hub shaft 12 and an outer peripheral end 28b radially spaced away from the radially outer side of the inner peripheral end 28 relative to the rotation center axis A1. The second hub body bearing 26 is disposed at the outer peripheral end 28b of the bearing spacer 28 and rotatably supports the hub body 14. The bearing spacer 28 is not rotatable relative to the hub shaft 12. In particular, as in Figure 4 As seen in the image, the inner circumferential end 28a defines a non-circular opening that mates with the non-circular portion of the hub shaft 12 to non-rotatably connect the bearing spacer 28 relative to the hub shaft 12. The axial position of the bearing spacer 28 relative to the hub shaft 12 can be determined by clamping the bearing spacer between a stepped portion provided on the hub shaft 12 and a nut screwed onto the hub shaft 12.

[0068] Here, the bearing spacer 28 includes an axial opening 28c. The axial opening 28c is at least partially formed in the angular region RA. In the mounted state of the hub assembly 10 mounted to the human-powered vehicle V, the angular region RA is defined between the horizontal forward direction HD and the vertical upward direction VD perpendicular to the horizontal forward direction. The central angle θ defined by the horizontal forward direction HD and the vertical upward direction VD is equal to ninety degrees. The horizontal forward direction HD and the vertical upward direction VD extend from the rotation center axis A1. The horizontal forward direction HD substantially corresponds to the forward direction of the human-powered vehicle V, and the vertical upward direction VD substantially corresponds to the upward direction of the human-powered vehicle V. The region between the horizontal forward direction HD and the vertical upward direction VD is less susceptible to chain tension. Therefore, adding the axial opening 28c does not adversely affect the reliability of the bearing spacer 28.

[0069] Here, the hub assembly 10 also includes a sprocket support structure 30. In the illustrated embodiment, the sprocket support structure 30 supports the rear sprocket CS, as in... Figure 2 As seen in the diagram, the sprocket support structure 30 is rotatably arranged around the rotation center axis A1 so as to transmit driving force to the hub body 14 while rotating about the rotation center axis A1 in the driving rotation direction D1. As explained below, the sprocket support structure 30 does not transmit driving force to the hub body 14 while rotating about the rotation center axis A1 in the non-driving rotation direction D2. The non-driving rotation direction D2 is opposite to the driving rotation direction D1 relative to the rotation center axis A1. The rotation center axis of the sprocket support structure 30 is concentrically arranged with respect to the rotation center axis A1 of the hub assembly 10.

[0070] Although the sprocket support structure 30 is configured to non-rotatably support the rear sprocket CS, the sprocket support structure 30 is not limited to the illustrated embodiment. Alternatively, one or more rear sprockets in the rear sprocket CS may be integrally formed with the sprocket support structure 30. In either case, the sprocket support structure 30 and the rear sprocket CS are coupled together to rotate together in the driving rotation direction D1 and the non-driving rotation direction D2.

[0071] The hub assembly 10 also includes a first sprocket support bearing 32 and a second sprocket support bearing 34. The first sprocket support bearing 32 rotatably supports a first end 30a of the sprocket support structure 30. The second sprocket support bearing 34 rotatably supports a second end 30b of the sprocket support structure 30. The outer diameters of the first sprocket support bearing 32 and the second sprocket support bearing 34 are smaller than the outer peripheral end 28b of the bearing spacer 28. The inner diameter of the first sprocket support bearing 32 is larger than the inner diameter of the second sprocket support bearing 34. Therefore, the first sprocket support bearing 32 and the second sprocket support bearing 34 can be mounted on the hub shaft 12 from the second axial end 12b of the hub shaft 12. The first sprocket support bearing 32 includes a first inner ring 32a, a first outer ring 32b, and a plurality of first roller elements 32c. The first roller elements 32c are disposed between the first inner ring 32a and the first outer ring 32b. The second sprocket support bearing 34 includes a second inner ring 34a, a second outer ring 34b, and a plurality of second roller elements 34c. The second roller element 34c is disposed between the second inner ring 34a and the second outer ring 34b. Here, the first sprocket support bearing 32 and the second sprocket support bearing 34 are radial ball bearings. The tubular spacer element 35 is disposed between the first sprocket support bearing 32 and the second sprocket support bearing 34.

[0072] As in Figure 5 and Figure 6As seen in the diagram, the hub assembly 10 also includes an electrical component 40. Although the electrical component 40 is part of the hub assembly 10, it can be used with other components of the human-powered vehicle. Therefore, the electrical component 40 is disposed on the human-powered vehicle V. Here, the hub assembly 10 also includes a housing 42 disposed in the hub body 14. The housing 42 is part of the electrical component 40. In other words, the electrical component 40 includes the housing 42.

[0073] Furthermore, the hub assembly 10 also includes a circuit board 44 disposed within the hub body 14. Specifically, the circuit board 44 is disposed within the housing 42. A cover 46 is attached to the housing 42 to encapsulate the circuit board 44 within the housing 42. Here, the cover 46 is bonded to the housing 42 by adhesive or welding. However, the cover 46 can also be attached to the housing 42 by threaded fasteners, rivets, etc. Preferably, the housing 42 and the cover 46 are rigid components made of suitable materials. For example, the housing 42 and the cover 46 are made of resin material. For example, the housing 42 and the cover 46 can each be injection-molded components. In the illustrated embodiment, the bearing spacer 28 is securely attached to the housing 42 and the cover 46 by a plurality of threaded fasteners 47.

[0074] The housing 42 is non-rotatable relative to the hub shaft 12. The housing 42 is configured to house electrical components 40. In the illustrated embodiment, a circuit board 44 is disposed within the housing 42. The housing 42 is configured to house the circuit board 44 and other article components. Specifically, the housing 42 has an outer peripheral surface 42a defining an internal space 42b in which the circuit board 44 is disposed. Figure 5 and Figure 6 As seen in the diagram, cover 46 is attached to housing 42 to protect circuit board 44 and capacitor 54. Cover 46 covers the interior space 42b of housing 42. Therefore, at least housing 42, circuit board 44, capacitor 54, and cover 46 can be considered to constitute an electrical unit disposed in hub body 14. The interior space 42b has an annular shape because hub shaft 12 travels through the central region of housing 42. Thus, circuit board 44 is non-rotatable relative to hub shaft 12. Circuit board 44 is arranged perpendicular to the rotation center axis A1. Circuit board 44 is part of electrical component 40. Housing 42 includes end wall portion 42c. End wall portion 42c of housing 42 includes a plurality of key protrusions 42d. As described below, key protrusions 42d may be configured to engage non-rotatable members disposed to hub shaft 12 for non-rotatably connecting housing 42 to hub shaft 12.

[0075] As in Figure 9As seen in the illustrated embodiment, the circuit board 44 has an arcuate shape. Here, the circuit board 44 has a first circumferential end 44a and a second circumferential end 44b. The circuit board 44 also has at least one arcuate edge extending at least partially from the first circumferential end 44a to the second circumferential end 44b. Here, the at least one arcuate edge includes at least one of an inner arcuate edge 44c and an outer arcuate edge 44d relative to the rotation center axis A1. The circuit board 44 also includes an electronic controller 48 disposed on the circuit board 44. The electronic controller is configured to receive a detection signal from a rotation detection sensor 52a. The electronic controller 48 includes at least one processor executing a predetermined control program. The at least one processor may be, for example, a central processing unit (CPU) or a microprocessor unit (MPU). As used herein, the term "electronic controller" refers to hardware executing software programs, excluding human intervention. Preferably, the circuit board 44 also includes a data storage device (memory) disposed on the circuit board 44. The data storage device (memory) stores various control programs and information for various control processes, including power generation control, power storage control, hub rotation detection control, etc. Data storage devices include any computer storage device or any non-transitory computer-readable medium, with the sole exception of transient propagation signals. For example, data storage devices include non-volatile memory and volatile memory. Non-volatile memory includes at least one of, for example, read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), and flash memory. Volatile memory includes, for example, random access memory (RAM).

[0076] As in Figure 6 As seen in the diagram, the hub assembly 10 also includes a detected portion 50, which is connected to the sprocket support structure 30. Specifically, the detected portion 50 is fixed to the sprocket support structure 30 such that the detected portion 50 and the sprocket support structure 30 rotate together about the hub shaft 12. The hub assembly 10 also includes a sensor 52 disposed within the hub body 14. The sensor 52 is disposed within the hub body 14. The sensor 52 is configured to detect the detected portion 50 disposed on the sprocket support structure 30. Specifically, the sensor 52 is disposed within the internal space 42b of the housing 42. Thus, the sensor 52 is non-rotatably mounted to the hub shaft 12. Therefore, the sensor 52 does not rotate with the hub body 14. The sensor 52 is also part of the electrical component 40. Here, the sensor 52 includes a rotation detection sensor 52, configured to detect the detected portion 50 such that it detects the rotation of the sprocket support structure 30 about the rotational central axis A1. Because the rotation detection sensor 52a is connected to the circuit board 44, the rotation detection sensor 52a cannot rotate relative to the hub shaft 12. (As in...) Figure 6As seen in the image, the rotation detection sensor 52a is located in the hub body 14 at a position radially outward from the hub shaft 12.

[0077] As in Figure 4 and Figure 7 As seen in the diagram, sensor 52 is positioned axially aligned within the axial opening 28c of the bearing spacer 28. This ensures that the bearing spacer 28 does not interfere with sensor 52, which is used to detect the portion 50 being detected, mounted on the sprocket support structure 30. (As shown in...) Figure 6 As seen in the diagram, sensor 52 is positioned separately from circuit board 44. Specifically, sensor 52 is arranged separately from circuit board 44 in a direction parallel to the rotation center axis A1. Sensor 52 is electrically connected to circuit board 44.

[0078] In the illustrated embodiment, the rotation detection sensor 52a includes a magnetic sensor, and the detected portion 50 includes a magnet. Therefore, the magnetic sensor detects the movement of the magnet rotating together with the sprocket support structure 30. In other words, with this arrangement, the rotation detection sensor 52a is configured to detect the detected portion 50 to detect the rotation of the sprocket support structure 30 about the rotation center axis A1. The electronic controller 48 is configured to receive the detection signal from the rotation detection sensor 52a.

[0079] Here, the magnet of the detected portion 50 is a ring-shaped component with alternating S-pole and N-pole sections. Thus, the rotation detection sensor 52a can detect the amount and direction of rotation of the sprocket support structure 30. However, the detected portion 50 is not limited to the ring-shaped component shown. For example, the detected portion 50 can be formed by a single non-ring-shaped magnet, or by two or more magnets circumferentially spaced around a central axis A1. When using two or more circumferentially spaced magnets, a back yoke can be provided, and the circumferentially spaced magnets can be mounted on the back yoke. This allows the circumferentially spaced magnets to be easily installed in the hub 10. As used herein, the term "sensor" refers to a hardware device or instrument designed to detect the presence or absence of a specific event, object, substance, or environmental change and to emit a response signal. As used herein, the term "sensor" does not include humans.

[0080] Furthermore, the electrical component 40 includes a circuit board 44, at least one conductor, and at least one capacitor. The at least one capacitor is electrically connected to the at least one conductor. As explained below, another conductor electrically connects the sensor 52 and the circuit board 44. Here, the electrical component 40 includes two capacitors 54. Moreover, the electrical component 40 includes a first conductor 56A and a pair of second conductors 56B. The capacitors 54 are examples of power storage in the electrical component 40. In other words, the capacitors 54 are also part of the electrical component 40. The capacitors 54 are preferably disposed within the housing 42 of the hub assembly 10. Thus, the capacitors 54 are non-rotatably supported on the hub axle 12 by the housing 42. The sensor 52 is electrically connected to the circuit board 44 via the first conductor 56A. Here, the first conductor 56A is a flexible strip conductor. The first conductor 56A can be a conductive lead. On the other hand, the circuit board 44 is electrically connected to the capacitors 54 via the second conductors 56B. The second conductors 56B extend from one of the first circumferential end 44a and the second circumferential end 44b. Here, one of the second conductors 56B extends from the first circumferential end 44a to electrically connect one of the capacitors 54 to the circuit board 44. The other of the second conductors 56B extends from the second circumferential end 44b to electrically connect the other of the capacitors 54 to the circuit board 44. Here, the second conductor 56B is a flexible strip conductor. The second conductor 56B can be a conductive lead. The capacitors 54 are disposed in the internal space of the housing 42 at a location other than the circuit board 44. The capacitors 54 can be held in the housing 42 with adhesive or the like.

[0081] Circuit board 44 is electrically connected to sensor 52 and capacitor 54, so that capacitor 54 provides power to circuit board 44 and other electrical components electrically connected to circuit board 44. For example, capacitor 54 provides power to sensor 52. Moreover, electronic controller 48 of circuit board 44 is configured to control the input and output of power from capacitor 54.

[0082] As in Figure 5 and Figure 6As seen in the diagram, the hub 10 also includes a one-way clutch 58 formed between the hub body 14 and the sprocket support structure 30. The one-way clutch 58 includes a plurality of pawls 58A disposed between the hub body 14 and the sprocket support structure 30. The one-way clutch 58 also includes a biasing element 58B that engages the pawls 58A with the sprocket support structure 30. The one-way clutch 58 also includes a plurality of ratchet teeth 58C. The ratchet teeth 58C are disposed on a retaining ring 58D fixed to the hub body 14. The ratchet teeth 58C are disposed on the inner circumferential surface of the retaining ring 58D. The retaining ring 58D is screwed to the hub body 14. The retaining ring 58D is made of a hard material such as metal. The retaining ring 58D abuts against the outer ring 26b of the second hub body bearing 26 in the axial direction relative to the rotation center axis A1. Opposite sides of the outer ring 26b of the second hub body bearing 26 abut against a step formed in the hub body 14 in the axial direction. The outer ring 26b of the second hub body bearing 26 is restricted from axial movement by a retaining ring 58D and a stepped portion formed on the hub body 14. A biasing element 58B biases a pawl 58A to engage with the ratchet teeth 58C of the retaining ring 58D. The biasing element 58B presses the pawl 54 against the sprocket support structure 30, causing the pawl 54 to pivot and engage with the ratchet teeth 58C of the retaining ring 58D. A sealing member 58E is disposed on the retaining ring 58D. The sealing member 58E is formed in an annular shape. The tongue of the sealing member 58E contacts the outer peripheral surface of the sprocket support 30.

[0083] Thus, the sprocket support structure 30 is connected to the hub body 14 to rotate together with it about the rotation center axis A1 in the driving rotation direction D1. Furthermore, when the sprocket support structure 30 rotates in the non-driving rotation direction D2, the ratchet teeth 58C of the sprocket support structure 18 push the pawl 58A and pivot the pawl 58A to its retracted position against the sprocket support structure 30. Therefore, the sprocket support structure 30 is configured to rotate relative to the hub body 14 about the rotation center axis A1 in the non-driving rotation direction D2. In this way, the sprocket support structure 30 and the one-way clutch 58 form a freewheel commonly used in bicycles. Since the basic operation of the freewheel is relatively conventional, it will not be discussed or explained in further detail.

[0084] As in Figure 5As seen in the diagram, the wheel hub 10 also includes a generator 60. The generator 60 is mounted on the wheel hub body 14 and configured to generate electricity through rotation of the wheel hub body 14. More specifically, the generator 60 is mounted on the wheel hub body 14 and located between the hub axle 12 and the central portion of the wheel hub body 14. The generator 60 is configured to generate electricity through rotation of the wheel hub body 14 relative to the hub axle 12. An electronic controller 44a of the circuit board 44 is electrically connected to the generator 60 to control the power output of the generator 60. Therefore, the electricity generated by the generator 60 can be stored and / or directly supplied to other components, such as the rotation detection sensor 52a, the rear derailleur RD, etc.

[0085] The generator 60 essentially comprises an armature 62 (i.e., the stator in the illustrated embodiment) and a magnet 64 (i.e., the rotor in the illustrated embodiment). Although the armature 62 is illustrated as fixed relative to the hub shaft 12 and the magnet 64 is illustrated as fixed relative to the hub body 14, the armature 62 may be fixed relative to the hub body 14 and the magnet 64 may be fixed relative to the hub shaft 12. The armature 62 includes a winding coil 62A and a bobbin 62B. The armature 62 also includes a first yoke 62C and a second yoke 62D. The winding coil 62A is wound on the bobbin 62B for supporting the winding coil 62A. The first yoke 62C includes two or more first yoke components arranged circumferentially along the hub shaft 12. Similarly, the second yoke 62D includes two or more second yoke components arranged circumferentially along the hub shaft 12 and alternating with the first yoke components of the first yoke 62C. The winding coil 62A is located between the first yoke 62C and the second yoke 62D in the axial direction of the hub shaft 12.

[0086] The magnet 64 includes a plurality of first magnet portions 64A and a plurality of second magnet portions 64B arranged inside a tubular support 66. The tubular support 66 is fixedly connected to the interior of the hub body 14 such that the magnet 64 and the hub body 14 rotate together about the hub shaft 12. The tubular support 66 functions as a back yoke. The back yoke is a component with high magnetic permeability, and the back yoke is arranged on the opposite side of the magnetized surface. By using the back yoke, a high magnetic field can be obtained. The tubular support 66 can be omitted. Alternatively, the hub body 14 may have the magnet 64 such that the hub body 14 partially forms the generator 60. The first magnet portions 64A and the second magnet portions 64B are arranged such that the S poles and N poles of the first magnet portions 64A and the second magnet portions 64B are alternately arranged along the circumferential direction of the hub shaft 12. Therefore, in the axial direction of the hub shaft 12, the S pole of the first magnet portion 64A is not aligned with the S pole of the second magnet portion 64B, and the N pole of the first magnet portion 64A is not aligned with the N pole of the second magnet portion 64B.

[0087] Furthermore, the hub assembly 10 also includes a cable 70. One end of the cable 70 is electrically connected to a circuit board 44, which in turn is connected to a generator 60. The other end of the cable 70 is electrically connected to another electrical component of the human-powered vehicle V, such as the rear derailleur RD, battery pack BP, or electrical connector. Thus, the cable 70 can supply power generated by the hub assembly 10 to the rear derailleur RD, battery pack BP, or other electrical components. The cable 70 can also be used to transmit signals from the electronic controller 44a of the circuit board 44 to the rear derailleur RD or other electrical components using power line communication (PLC).

[0088] Cable 70 enters the hub assembly 10 through opening 18b of end cap 18. Cable 70 then extends axially along hub shaft 12 and passes through bearing spacer 28. Cable 70 passes through cover 46 into housing 42 of electrical component 40. Within housing 42 of electrical component 40, cable 70 is electrically connected to circuit board 44. Preferably, as in the illustrated embodiment, cable 70 is disposed in an axially extending recess or groove 12d of hub shaft 12. The axially extending recess or groove 12d extends at least from the second axial end 12b into the housing 42 of electrical component 40. Here, groove 12d extends from the second axial end 12b through generator 60.

[0089] The hub 10 also includes two fixing plates 75 disposed on the hub shaft 12 for non-rotatably connecting the generator 60 to the hub shaft 12. The fixing plates 75 are disposed on opposite axial ends of the generator 60. The fixing plates 75 have a plate-like shape. Each fixing plate 75 includes a protrusion 75a disposed in a groove 12d of the hub shaft 12. By inserting the protrusion 75a into the groove 12d of the hub shaft 12, the fixing plate 75 does not rotate relative to the hub shaft 12. The generator 60 does not rotate relative to the hub shaft 12 by engaging with a protrusion 75b projecting from the axially facing surface of the fixing plate 75. The fixing plates 75 are arranged to clamp the generator 60 from both sides in the axial direction of the generator 60. Rotation of the fixing plates 75 relative to the hub shaft 12 is also suppressed by providing D-shaped cutouts that match the corresponding outer surfaces of the hub shaft 12. One of the fixing plates 75 may be omitted.

[0090] Furthermore, the housing 42 can be non-rotatably coupled to one of the mounting plates 75 to suppress rotation of the housing 42 relative to the hub shaft 12. For example, the keyed protrusion 42d of the housing 42 is configured to engage an opening in one of the mounting plates 75 that is keyed to the hub shaft 12. The mounting plate 76 includes a plurality of openings corresponding to the plurality of keyed protrusions 42d. This prevents rotation of the housing 42 relative to the hub shaft 12. Alternatively, the housing 42 can be attached to a bearing spacer 28, which is non-rotatably coupled to the hub shaft 12.

[0091] In understanding the scope of this invention, the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that specify the presence of the stated features, elements, components, groups, integers, and / or steps, but do not exclude the presence of other unstated features, elements, components, groups, integers, and / or steps. The foregoing also applies to words with similar meanings, such as the terms "comprising," "having," and their derivatives. Furthermore, unless otherwise stated, the terms "part," "section," "section," "component," or "element" may have a dual meaning of a single part or multiple parts when used in the singular.

[0092] As used herein, the following directional terms, “facing the frame side,” “not facing the frame side,” “forward,” “backward,” “front,” “back,” “up,” “down,” “above,” “below,” “upward,” “downward,” “top,” “bottom,” “side,” “vertical,” “horizontal,” “vertical,” and “lateral,” as well as any other similar directional terms, refer to those directions of a human-powered vehicle (e.g., a bicycle) in an upright riding position with wheels. Therefore, these directional terms used to describe wheels should be interpreted relative to a human-powered vehicle (e.g., a bicycle) in an upright riding position on a horizontal surface with wheels. The terms “left” and “right” are used to mean “right” when viewed from the rear of the human-powered vehicle (e.g., a bicycle) and when viewed from the left when viewed from the rear of the human-powered vehicle (e.g., a bicycle).

[0093] As used in this disclosure, the phrase "at least one" means "one or more" of the desired choices. For one example, the phrase "at least one" as used in this disclosure means "only one single choice" or "both of the two choices" if the number of choices is two. For another example, the phrase "at least one" as used in this disclosure means "only one single choice" or "any combination of two choices" if the number of choices is equal to or greater than three. Furthermore, the term "and / or" as used in this disclosure means "any one or both of them".

[0094] Furthermore, it should be understood that although the terms "first" and "second" may be used herein to describe various components, these components should not be limited by these terms. These terms are used only to distinguish one component from others. Thus, for example, without departing from the teachings of the invention, the first component discussed above may be referred to as the second component, and vice versa.

[0095] As used herein, the term “attached” or “attached” encompasses constructions that directly fasten an element to another element by attaching it directly to that element; constructions that indirectly fasten an element to another element by attaching it to one or more intermediate elements, which in turn attach the element to another element; and constructions in which one element is integral with another element, i.e., one element is essentially part of another element. This definition also applies to words with similar meanings, such as “connect,” “link,” “attach,” “install,” “combine,” “fix,” and their derivatives. Finally, degree terms as used herein, such as “substantially,” “approximately,” and “about,” refer to the amount of deviation of the modified term such that the final result is not significantly altered.

[0096] Although only selected embodiments have been chosen to illustrate the invention, it will be apparent to those skilled in the art, based on this disclosure, that various changes and modifications can be made herein without departing from the scope of the invention as defined by the appended claims. For example, unless otherwise specifically stated, the size, shape, position, or orientation of various components may be changed as needed and / or desired, provided that such changes do not substantially affect their intended function. Unless otherwise specifically stated, components shown as directly connected or in contact with each other may have an intermediate structure between them, provided that such changes do not substantially affect their intended function. Unless otherwise specifically stated, the function of one element may be performed by two elements, and vice versa. The structure and function of one embodiment may be employed in another embodiment. Not all advantages must appear simultaneously in a particular embodiment. Each feature unique relative to the prior art, individually or in combination with other features, should also be considered as a separate description by the applicant of further inventions, including structural and / or functional concepts embodied by one or more such features. Therefore, the foregoing description providing embodiments according to the invention is for illustrative purposes only and is not intended to limit the invention as defined by the appended claims and their equivalents.

Claims

1. An electrical component for a human-powered vehicle, the electrical component comprising: A circuit board having an arcuate shape and having a first circumferential end, a second circumferential end, and at least one arcuate edge, the at least one arcuate edge extending at least partially from the first circumferential end to the second circumferential end; At least one conductor, said at least one conductor being configured to extend from one of a first circumferential end and a second circumferential end; and At least one capacitor, said at least one capacitor being electrically connected to said at least one conductor; The circuit board is disposed in the hub body of the hub assembly, the hub assembly includes a hub shaft, and the hub body is rotatably mounted on the hub shaft to rotate about the rotation center axis of the hub assembly; the electrical components also include a sensor disposed in the hub body, the sensor being electrically connected to the circuit board through a first conductor, and the sensor being arranged at a position separate from the circuit board in a direction parallel to the rotation center axis.

2. The electrical component of claim 1, further comprising: Another conductor, which is electrically connected to the sensor and the circuit board.

3. The electrical component of claim 1, wherein, The wheel hub assembly also includes: A bearing spacer having an inner circumferential end disposed on a hub shaft and an outer circumferential end radially spaced apart from the radially outer side of the inner circumferential end relative to the axis of rotation; and The first hub body bearing is disposed at the outer peripheral end of the bearing spacer and rotatably supports the hub body.

4. The electrical component according to claim 3, wherein, The bearing spacer includes an axial opening, which, in the mounted state of the hub assembly on a human-powered vehicle, is at least partially formed in an angular region defined between a horizontally forward direction and a vertically upward direction perpendicular to the horizontally forward direction. The central angle defined by the horizontal forward direction and the vertical upward direction is equal to ninety degrees, and The horizontal forward direction and the vertical upward direction extend from the axis of rotation.

5. The electrical component according to claim 3, wherein The circuit board is arranged perpendicular to the axis of rotation.

6. The electrical component according to claim 3, wherein The bearing spacer includes an axial opening, and The sensor is positioned in an axially aligned location within the axial opening of the bearing spacer.

7. The electrical component according to claim 3, wherein The circuit board is electrically connected to the at least one capacitor via a second conductor.

8. The electrical component according to claim 3, wherein The at least one arcuate edge includes at least one of an inner arcuate edge and an outer arcuate edge relative to the rotation center axis.

9. The electrical component of claim 3, wherein the hub assembly further comprises... A housing is disposed within a hub body and has an outer peripheral surface defining an internal space, wherein the circuit board is disposed within the internal space.

10. The electrical component according to claim 9, wherein The housing is not rotatable relative to the hub axle.

11. The electrical component of claim 3, wherein the hub assembly further comprises... The second hub body bearing rotatably supports one end of the hub body, and The first hub body bearing rotatably supports the other end of the hub body relative to the rotation center axis.

12. The electrical component of claim 3, wherein the hub assembly further comprises... A sprocket support structure is rotatably arranged around a rotational center axis to transmit driving force to the hub body while rotating in the driving rotational direction around the rotational center axis.

13. The electrical component of claim 12, wherein the hub assembly further comprises... The part being tested is connected to the sprocket support structure. in, The electrical component includes a rotation detection sensor configured to detect the detected portion, thereby detecting the rotation of the sprocket support structure around a rotation center axis.

14. The electrical component of claim 12, wherein the hub assembly further comprises... A first sprocket support bearing rotatably supports a first end of a sprocket support structure, and The second sprocket support bearing rotatably supports the second end of the sprocket support structure. The first sprocket support bearing and the second sprocket support bearing have an outer diameter smaller than the outer circumferential end of the bearing spacer.

15. The electrical component of claim 3, wherein the hub assembly further comprises... A generator is mounted on a hub body and configured to generate electricity by rotating the hub body.

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