Hub assembly for human-powered vehicles

Abstract

To provide a hub assembly for a human power drive vehicle in which the number of components can be reduced.SOLUTION: A hub assembly for a human power drive vehicle is provided with: a shaft member having a central shaft center; a hub shell arranged rotatably around the central shaft center; a sprocket support body, arranged rotatably around the central shaft center, to which at least one sprocket is attached; a torque transmission structure that transmits torque from either of the sprocket support body and the hub shell to the other of the sprocket support body and the hub shell; and a tool engagement part, provided in the torque transmission structure, which is configured to enable the tool to be engaged from outside of the hub shell. The tool engagement part is positioned closer to outside in a radial direction than the sprocket support body, in the radial direction with respect to the central shaft center.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present disclosure relates to a hub assembly for a human-powered vehicle.

Background Art

[0002] Patent Document 1 discloses a hub assembly for a human-powered vehicle, which includes a shaft member, a hub shell, a sprocket support, and a torque transmission structure that transmits torque from one of the sprocket support and the hub shell to the other of the sprocket support and the hub shell. In the hub assembly of Patent Document 1, the torque transmission structure is attached to the hub shell by a tool engagement portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The tool engagement portion of the hub assembly of Patent Document 1 is provided on a member formed separately from the hub shell and the torque transmission structure. The member formed separately from the hub shell and the torque transmission structure is attached to the torque transmission structure.

[0005] One object of the present disclosure is to provide a hub assembly for a human-powered vehicle that can reduce the number of parts.

Means for Solving the Problems

[0006] A hub assembly according to a first aspect of the present disclosure is a hub assembly for a human-powered vehicle, comprising: an axle member having a central axis; a hub shell rotatably disposed about the central axis; a sprocket support rotatably disposed about the central axis and to which at least one sprocket is attached; a torque transmission structure for transmitting torque from one of the sprocket support and the hub shell to the other of the sprocket support and the hub shell; and a tool engagement portion provided on the torque transmission structure and configured to allow a tool to be engaged from outside the hub shell, wherein the tool engagement portion is located radially outward from the sprocket support in the radial direction with respect to the central axis. According to the first side view of the hub assembly, the tool engagement portion is provided in the torque transmission structure, thus reducing the number of parts. According to the first side view of the hub assembly, the tool engagement portion is located radially outward from the sprocket support, making it easier for the tool to engage with the tool engagement portion from outside the hub shell.

[0007] A hub assembly according to a second aspect of the present disclosure is a hub assembly for a human-powered vehicle, comprising: an axle member having a central axis; a hub shell rotatably disposed about the central axis; a sprocket support rotatably disposed about the central axis and to which at least one sprocket is attached; a torque transmission structure for transmitting torque from one of the sprocket support and the hub shell to the other of the sprocket support and the hub shell; and a tool engagement portion provided on the torque transmission structure and configured to allow a tool to be engaged from outside the hub shell, wherein the sprocket support has a sprocket engagement portion that engages with the sprocket, and the tool engagement portion is located on the hub shell side of the sprocket engagement portion in the axial direction with respect to the central axis. According to the second side hub assembly, the tool engagement portion is provided in the torque transmission structure, thus reducing the number of parts. According to the second side hub assembly, the tool engagement portion is located on the hub shell side in the axial direction compared to the sprocket engagement portion, making it easier for the sprocket to engage with the sprocket engagement portion.

[0008] In a hub assembly of a third aspect according to the first or second aspect of the present disclosure, the torque transmission structure includes a one-way clutch, the one-way clutch including a first one-way clutch portion that rotates integrally with the sprocket support and a second one-way clutch portion that rotates integrally with the hub shell. According to the hub assembly on the third side, torque can be suitably transmitted between the sprocket support and the hub shell by the one-way clutch.

[0009] In a hub assembly of a fourth aspect according to the third aspect of this disclosure, the first one-way clutch portion is positioned outward in the radial direction with respect to the central axis than at least a portion of the second one-way clutch portion. According to the hub assembly on the fourth side, the first one-way clutch portion can be positioned outward in the radial direction with respect to the central axis, beyond at least a portion of the second one-way clutch portion.

[0010] In a hub assembly of a fifth aspect according to a third or fourth aspect of the present disclosure, the torque transmission structure includes a connecting portion that connects the second one-way clutch portion and the hub shell so that the second one-way clutch portion and the hub shell rotate together, and the tool engagement portion is provided on the connecting portion. According to the fifth side view of the hub assembly, a tool engagement portion is provided at the connection portion, so that the torque transmission structure is connected to the hub shell by the connection portion being operated by a tool.

[0011] A hub assembly according to a sixth aspect of the present disclosure is a hub assembly for a human-powered vehicle, comprising: an axle member having a central axis; a hub shell rotatably disposed about the central axis; a sprocket support rotatably disposed about the central axis and to which at least one sprocket is attached; a one-way clutch including a first one-way clutch portion that rotates integrally with the sprocket support and a second one-way clutch portion that rotates integrally with the hub shell; and a connecting portion connecting the second one-way clutch portion and the hub shell so that the second one-way clutch portion and the hub shell rotate integrally, wherein the one-way clutch is included in a torque transmission structure that transmits torque from the sprocket support to the hub shell, and the connecting portion includes a tool engagement portion to which a tool can be engaged from outside the hub shell. According to the sixth side hub assembly, the tool engagement portion is included in the connection portion of the torque transmission structure, thus reducing the number of parts. According to the sixth side hub assembly, because the tool engagement portion is included in the connection portion of the torque transmission structure, the torque transmission structure is connected to the hub shell by the connection portion being operated by a tool.

[0012] In a hub assembly of a seventh aspect according to the fifth or sixth aspect of the present disclosure, the hub shell is provided with a first female threaded portion, and the connecting portion is provided with a first male threaded portion that screws into the first female threaded portion. According to the hub assembly on the seventh side, the connection portion of the torque transmission structure can be connected to the hub shell by the first female thread portion and the first male thread portion.

[0013] In a hub assembly of an eighth side according to any one of the fifth to seventh sides of the present disclosure, the connecting portion is formed separately from the second one-way clutch portion and is attached to the second one-way clutch portion so as to be non-rotatable relative to the second one-way clutch portion. According to the hub assembly on the eighth side, torque can be suitably transmitted from the second one-way clutch to the hub shell by the connection.

[0014] In the hub assembly of the ninth side according to the eighth side of the present disclosure, the connecting portion is provided with a second female threaded portion, and the second one-way clutch portion is provided with a second male threaded portion that screws into the second female threaded portion. According to the hub assembly on the ninth side, the connection portion of the torque transmission structure can be connected to the second one-way clutch portion by the second female thread portion and the second male thread portion.

[0015] In a hub assembly of a tenth side according to any one of the fifth to ninth sides of the present disclosure, the connecting portion includes a projection that protrudes outward from the hub shell in an axial direction with respect to the central axis, and the tool engagement portion is provided on the outer surface formed radially outward of the projection with respect to the central axis. According to the hub assembly on the 10th side, a tool engagement portion is formed on the outer surface of the protrusion, making it easy for a tool to engage with the tool engagement portion from outside the hub shell.

[0016] In a hub assembly of an eleventh side according to any one of the first to nine sides of the present disclosure, the torque transmission structure includes a projection that protrudes outward from the hub shell in an axial direction with respect to the central axis, and the tool engagement portion is provided on the outer surface formed radially outward with respect to the central axis of the projection. According to the 11th side hub assembly, a tool engagement portion is formed on the outer surface of the protrusion, making it easier for a tool to engage with the tool engagement portion from outside the hub shell.

[0017] In a hub assembly of a twelfth side according to the tenth or eleventh side of the present disclosure, the projection extends outward in the radial direction with respect to the central axis. According to the hub assembly on the 12th side, the projection extends radially outward, making it easier for a tool to engage with a tool engagement portion provided on the outer surface of the hub shell from outside.

[0018] In the hub assembly according to the 13th aspect of any one of the 1st to 12th aspects of the present disclosure, the tool engaging portion is configured to engage with a tool for attaching the torque transmission structure to the hub shell in a state where the hub shell is disposed on the shaft member. According to the hub assembly of the 13th aspect, in a state where the hub shell is disposed on the shaft member, the torque transmission structure can be attached to the hub shell by a tool.

[0019] In the hub assembly according to the 14th aspect of any one of the 1st to 13th aspects of the present disclosure, a spline is formed on the tool engaging portion. According to the hub assembly of the 14th aspect, a tool can be suitably engaged with the tool engaging portion by the spline.

[0020] In the hub assembly according to the 15th aspect of any one of the 1st to 14th aspects of the present disclosure, an electrical component is further provided, and the electrical component is provided in the internal space of the hub shell. According to the hub assembly of the 15th aspect, an electrical component can be provided in the internal space of the hub shell.

Effect of the Invention

[0021] The hub assembly for a human-powered vehicle according to the present disclosure can reduce the number of parts.

Brief Description of the Drawings

[0022] [Figure 1] It is a front view of the hub assembly for a human-powered vehicle according to the first embodiment. [Figure 2] It is a perspective view of the hub assembly for a human-powered vehicle of FIG. 1. [Figure 3] It is a side view of the hub assembly for a human-powered vehicle of FIG. 1. [Figure 4] It is a cross-sectional view taken along line D4-D4 of FIG. 3. [Figure 5] It is an exploded perspective view of the hub assembly for a human-powered vehicle of FIG. 1. [Figure 6]Figure 1 is a perspective view of the end of a hub assembly for a human-powered vehicle. [Figure 7] Figure 4 is a magnified partial cross-sectional view showing the axial right end and surrounding area of ​​the hub assembly for a human-powered vehicle. [Figure 8] Figure 4 is a partial cross-sectional view showing an enlarged intermediate portion in the axial direction of the hub assembly for a human-powered vehicle. [Figure 9] Figure 8 is a perspective view of the bobbin, winding, and lead wire. [Figure 10] Figure 8 is a plan view of the bobbin. [Figure 11] Figure 8 is a front view of the regulating member. [Figure 12] Figure 8 is a front view of the housing. [Figure 13] Figure 8 is a plan view of the housing. [Figure 14] This is a front view of the housing shown in Figure 12, with the lid removed. [Figure 15] Figure 8 is a plan view showing the positional relationship between the magnet, magnetic sensor, magnetic generating component, and electrical circuit board. [Figure 16] Figure 8 is a schematic diagram showing the positional relationship between the first member, the second member, the magnet, the magnetic sensor, the magnetic generating component, and the electrical circuit board. [Figure 17] Figure 1 is a block diagram showing the electrical configuration of a hub assembly for a human-powered vehicle. [Figure 18] This is a perspective view of the right end of the shaft member in the axial direction shown in Figure 4. [Figure 19] Figure 4 is a side view of the shaft member. [Figure 20] Figure 4 is a front view of the auxiliary member. [Figure 21] Figure 4 is a plan view showing the first and second states of the auxiliary member. [Figure 22] Figure 1 is a perspective view of a hub assembly for a human-powered vehicle and a tool for attaching a torque transmission structure to the hub shell. [Figure 23]Figure 15 is a timing chart showing an example of the changes in magnetic flux density input to the magnetic sensor, the output of the first magnetic sensor, and the output of the second magnetic sensor. [Figure 24] This is a flowchart of the process for determining the rotation direction of the second member, which is performed by the control unit shown in Figure 17. [Figure 25] This is a partial cross-sectional view showing the axial intermediate portion of a hub assembly for a human-powered vehicle according to a second embodiment. [Figure 26] This is a magnified partial cross-sectional view showing the axial right end and surrounding area of ​​the hub assembly for a human-powered vehicle of the first modification example. [Figure 27] This is a magnified partial cross-sectional view showing the axial right end and surrounding area of ​​the hub assembly for a human-powered vehicle in the second modification example. [Figure 28] This is a perspective view of the bobbin, winding, and lead wires in the third modification example. [Modes for carrying out the invention]

[0023] <First Embodiment> A hub assembly 20 for a human-powered vehicle according to the first embodiment will be described with reference to Figures 1 to 24. Human-powered vehicle 10 is a vehicle having at least one wheel and capable of being driven by at least human power. Human-powered vehicle 10 includes various types of bicycles, such as mountain bikes, road bikes, city bikes, cargo bikes, handbikes, and recumbent bikes. The number of wheels that human-powered vehicle 10 has is not limited. Human-powered vehicle 10 also includes vehicles with two or more wheels, such as unicycles. Human-powered vehicle 10 is not limited to vehicles that can be driven solely by human power. Human-powered vehicle 10 includes e-bikes that utilize the driving force of an electric motor in addition to human power for propulsion. E-bikes include electric assist bicycles in which propulsion is assisted by an electric motor. In the following embodiments, human-powered vehicle 10 will be described as a bicycle.

[0024] <Hub Assembly 20> As shown in Figure 1, the hub axle 22 of the hub assembly 20 is supported by the frame 14 of the human-powered vehicle 10. The spokes of the drive wheels of the human-powered vehicle 10 are attached to the hub shell 24 of the hub assembly 20. The hub assembly 20 is, for example, a rear hub assembly. The hub assembly 20 is configured to transmit the human-powered driving force input from the sprocket 12 to the drive wheels of the human-powered vehicle 10.

[0025] As shown in Figures 2 to 5, the hub assembly 20 includes a hub shaft 22. The hub assembly 20 includes a shaft member 26, a hub shell 24, a sprocket support 32, a torque transmission structure 36, and a tool engagement portion 36C. The hub shaft 22 includes the shaft member 26. The hub assembly 20 further includes, for example, a bearing 34, a one-way clutch 38, and a connecting portion 36A. The hub assembly 20 further includes, for example, a power generation unit 40. The hub assembly 20 further includes, for example, a power generation device 42. The power generation device 42 is configured to include the power generation unit 40. The hub assembly 20 further includes, for example, an electrical component 58. The hub assembly 20 includes an electrical cable 88. For example, the hub assembly 20 further includes an auxiliary member 92. The hub assembly 20 further includes, for example, at least one connector 70.

[0026] <Hub axle 22> As shown in Figure 4, the hub shaft 22 rotatably supports the hub shell 24 and has a central axis C1. The axial direction X1 with respect to the central axis C1 includes a first axial direction A1. The axial direction X1 includes, for example, a second axial direction A2 opposite to the first axial direction A1. The hub shaft 22 is mounted, for example, to the frame end of the frame 14 of the human-powered vehicle 10. The hub shaft 22 is mounted, for example, to the rear end of the frame 14 of the human-powered vehicle 10. The hub shaft 22 includes, for example, a hollow portion having a circumferential wall 22A. In this embodiment, the circumferential wall 22A is provided on the end cap 28.

[0027] The hub shaft 22 includes, for example, a shaft member 26 and at least one end cap 28. The hub shaft 22 includes, for example, an additional end cap 30. The hub shaft 22 includes a positioning member 80. The hub shaft 22 includes a first frame contact end face 22B, a second frame contact end face 22C, and at least one cable guide portion 90.

[0028] The shaft member 26 has a central axis C1. The central axis of the shaft member 26 coincides with the central axis C1 of the hub shaft 22. The shaft member 26 rotatably supports the hub shell 24. The shaft member 26 is, for example, a hollow shaft and includes an inner surface 26A and an outer surface 26B in the radial direction X2 with respect to the central axis C1. The shaft member 26 includes an end 26C. The end 26C includes one end 26C and the other end 26C in the axial direction X1.

[0029] An end cap 28 is attached to the end 26C in the axial direction X1 with respect to the central axis C1 of the shaft member 26. At least one end cap 28 is attached to the end 26C of the shaft member 26 in the axial direction X1. The at least one end cap 28 includes, for example, an end cap 28X and an additional end cap 30. The end cap 28 is attached to the end 26C. For example, the end cap 28X is attached to one end 26C in the axial direction X1, and the additional end cap 30 is attached to the other end 26C in the axial direction X1. The end 26C of the shaft member 26 is provided with, for example, a male thread. The end cap 28 forms, for example, a hollow portion having a peripheral wall portion 22A of the hub shaft 22.

[0030] As shown in Figures 4 and 7, the end cap 28X is positioned on the first axial direction A1 side of the shaft member 26. The end cap 28X is fitted onto the end 26C of the shaft member 26. The positioning member 80 is configured to determine the position of the end cap 28X relative to the shaft member 26 in the circumferential direction X3 with respect to the central axis C1. For example, the positioning member 80 extends in the radial direction X2 with respect to the central axis C1. The positioning member 80 is configured separately from, for example, the end cap 28X and the shaft member 26. The positioning member 80 includes, for example, a pin member. The end cap 28X has a first positioning portion 28A. The end 26C of the shaft member 26 has a second positioning portion 26D. The positioning member 80 has a first portion 80A and a second portion 80B which is different from the first portion 80A. The first positioning portion 28A is where the first portion 80A is positioned. The second arrangement section 26D is where the second part 80B is arranged.

[0031] For example, one of the first placement portion 28A and the second placement portion 26D includes a fixing hole 82A. The first placement portion 28A of the end cap 28X includes, for example, a fixing hole 82A. For example, the fixing hole 82A holds the fixing member 80. The fixing member 80 is held in the fixing hole 82A by press-fitting the first portion 80A of the fixing member 80 into the fixing hole 82A.

[0032] For example, the other of the first placement section 28A and the second placement section 26D includes a positioning recess 82B. The second placement section 26D of the end 26C of the shaft member 26 includes, for example, a positioning recess 82B. For example, the positioning recess 82B receives the positioning member 80. The positioning recess 82B receives the positioning member 80 by positioning the second portion 80B of the positioning member 80 in the positioning recess 82B.

[0033] For example, the positioning recess 82B opens at least in the radial direction X2 with respect to the central axis C1. The opening of the positioning recess 82B has a gap between the positioning member 80 and one of the sides of the positioning recess 82B in the circumferential direction X3 when the second portion 80B of the positioning member 80 is positioned in the positioning recess 82B. The opening of the positioning recess 82B is formed at the end 26C of the shaft member 26 such that the positioning member 80 and one of the sides of the positioning recess 82B in the circumferential direction X3 do not come into contact when the second portion 80B of the positioning member 80 is positioned in the positioning recess 82B. The opening of the positioning recess 82B may be formed so that the second portion 80B of the positioning member 80 is removably press-fitted into the positioning recess 82B. The positioning recess 82B is continuous from the outer surface 26B to the inner surface 26A in the radial direction X2, for example. The positioning recess 82B does not need to be continuous from the outer surface 26B to the inner surface 26A in the radial direction X2, as long as it opens to at least the outer surface 26B so as to receive the positioning member 80. The positioning member 80 includes, for example, an additional positioning member 80X. The additional positioning member 80X is configured to position the end cap 28 relative to the shaft member 26 in the axial direction X1. In this embodiment, the additional positioning member 80X is configured to position the end cap 28X relative to the shaft member 26 in the axial direction X1. The additional positioning member 80X includes, for example, an O-ring. The additional positioning member 80X includes, for example, a resin material.

[0034] The additional end cap 30 has, for example, a female thread that screws onto the male thread of the end 26C. The additional end cap 30 is attached to the shaft member 26 so as to determine the position of the additional bearing 30A relative to the shaft member 26 in the axial direction X1. The additional bearing 30A may be attached to the shaft member 26 by a nut.

[0035] As shown in Figure 1, the first frame contact end face 22B is, for example, one end face of the shaft member 26 in the axial direction X1, and the second frame contact end face 22C is, for example, the other end face of the shaft member 26 in the axial direction X1. The second frame contact end face 22C is the end face opposite to the first frame contact end face 22B in the axial direction X1 with respect to the central axis C1. In this embodiment, the first frame contact end face 22B and the second frame contact end face 22C are provided on the end faces of the end cap 28, respectively. The first frame contact end face 22B is provided on the end face of the end cap 28X, and the second frame contact end face 22C is provided on the end face of the additional end cap 30.

[0036] The frame 14 includes a first frame 14A and a second frame 14B. The first frame contact end face 22B faces, for example, the first frame 14A. The second frame contact end face 22C faces, for example, the second frame 14B. The first frame contact end face 22B and the second frame contact end face 22C contact the frame 14 of the human-powered vehicle 10 when the shaft member 26 is attached to the frame 14. The distance from the first frame contact end face 22B to the second frame contact end face 22C in the axial direction X1 defines the overlock nut dimension of the hub assembly 20.

[0037] <Hubshell 24> The hub shell 24 is rotatably positioned around the central axis C1. The hub shell 24 rotates relative to the shaft member 26. The hub shell 24 surrounds the outer surface 26B of the shaft member 26. The hub assembly 20 further includes, for example, an additional bearing 30A. The additional bearing 30A is provided at the end of the hub shell 24 on the side of the additional end cap 30 in the axial direction X1. The additional bearing 30A rotatably supports the hub shell 24 relative to the shaft member 26. The internal space H1 of the hub shell 24 houses a portion of the shaft member 26, the power generation unit 40, the housing 62, the housing regulating member 62X, and a portion of the electrical cable 88.

[0038] <Sprocket support 32> As shown in Figures 1 and 2, the sprocket support 32 is attached to the hub shell 24 via a torque transmission structure 36. The sprocket support 32 is attached to one end of the hub shaft 22 in the axial direction X1. The sprocket support 32 is rotatably positioned around the central axis C1 and to which at least one sprocket 12 is attached. The sprocket support 32 rotates relative to the shaft member 26, for example, and to which at least one sprocket 12 is attached. The sprocket support 32 has a sprocket engagement portion 32A that engages with the sprocket 12. The sprocket engagement portion 32A includes, for example, a spline.

[0039] As shown in Figure 7, the bearing 34 is provided, for example, on the shaft member 26 and rotatably supports the sprocket support 32 relative to the shaft member 26. The bearing 34 is provided, for example, on the sprocket support 32 via a support member 34D. The sprocket support 32 is connected to the bearing 34 via a bearing 35. The bearing 34 includes, for example, a plurality of bearings 34. The bearing 34 may be a single bearing 34. The bearing 34 includes, for example, an outer ring 34A, an inner ring 34B, and a rotating body 34C. The outer ring 34A is provided radially inward of the sprocket support 32 via a second one-way clutch portion 38B. The inner ring 34B is provided on the outer surface of the shaft member 26. The rotating body 34C is provided between the outer ring 34A and the inner ring 34B so that the outer ring 34A is rotatable relative to the inner ring 34B. For example, the rotating body 34C is a ball, and the bearing 34 is a ball bearing. The bearing 34 may be a roller bearing.

[0040] <Torque transmission structure 36> The torque transmission structure 36 transmits torque from one of the sprocket support 32 and the hub shell 24 to the other of the sprocket support 32 and the hub shell 24. For example, at least a portion of the torque transmission structure 36 is non-removably mounted on the sprocket support 32. For example, the torque transmission structure 36 includes a one-way clutch 38. The one-way clutch 38 is included in the torque transmission structure 36 that transmits torque from the sprocket support 32 to the hub shell 24.

[0041] The one-way clutch 38 includes, for example, at least one of a roller clutch, a sprag clutch, and a ratchet clutch. The one-way clutch 38 transmits torque from the sprocket support 32 to the hub shell 24 when the rotational speed of the sprocket support 32 in a predetermined direction is about to exceed the rotational speed of the hub shell 24 in a predetermined direction corresponding to the direction in which the human-powered vehicle 10 moves forward. When torque is transmitted from the sprocket support 32 to the hub shell 24, the sprocket support 32 rotates together with the hub shell 24. When torque is transmitted from the sprocket support 32 to the hub shell 24, for example, when the human-powered vehicle 10 is driven by the rotation of the crank of the human-powered vehicle 10. The one-way clutch 38 is configured to allow relative rotation between the hub shell 24 and the sprocket support 32 when the rotational speed of the hub shell 24 in a predetermined direction is greater than the rotational speed of the sprocket support 32 in a predetermined direction. One example of a situation in which the one-way clutch 38 allows relative rotation is when the human-powered vehicle 10 is coasting.

[0042] The one-way clutch 38 includes a first one-way clutch portion 38A and a second one-way clutch portion 38B. The first one-way clutch portion 38A includes, for example, the outer ring of the one-way clutch 38. The second one-way clutch portion 38B includes, for example, the inner ring of the one-way clutch 38. The one-way clutch 38 further includes an engaging portion 38C and an engaged portion 38D. The engaging portion 38C includes a claw member or rolling element. The engaged portion 38D includes a groove. The engaging portion 38C is provided between the first one-way clutch portion 38A and the second one-way clutch portion 38B. The engaging portion 38C is provided on one of the first one-way clutch portion 38A and the second one-way clutch portion 38B, and the engaged portion 38D is provided on the other of the first one-way clutch portion 38A and the second one-way clutch portion 38B.

[0043] The first one-way clutch portion 38A rotates integrally with the sprocket support 32. The first one-way clutch portion 38A may be formed integrally with the sprocket support 32, for example. The first one-way clutch portion 38A may be formed separately from the sprocket support 32. The first one-way clutch portion 38A may be provided on the inner surface of the sprocket support 32, for example. For example, the first one-way clutch portion 38A is positioned outward in the radial direction X2 with respect to the central axis C1, at least a portion of the second one-way clutch portion 38B. The second one-way clutch portion 38B rotates integrally with the hub shell 24.

[0044] <Connection structure between sprocket support 32 and hub shell 24> For example, the torque transmission structure 36 includes a connecting portion 36A. The sprocket support 32 and the torque transmission structure 36 are detachably attached to the hub shell 24 via the connecting portion 36A. The connecting portion 36A connects the second one-way clutch portion 38B to the hub shell 24 so that the second one-way clutch portion 38B and the hub shell 24 rotate together. The connecting portion 36A is formed separately from the hub shell 24 and attached to the hub shell 24 so as to be non-rotatable relative to the hub shell 24. For example, the connecting portion 36A is formed separately from the second one-way clutch portion 38B and attached to the second one-way clutch portion 38B so as to be non-rotatable relative to the second one-way clutch portion 38B. The second one-way clutch portion 38B is positioned inward in the radial direction X2 from at least a portion of the connecting portion 36A. The first one-way clutch portion 38A is positioned to overlap with the connecting portion 36A when viewed from the axial direction X1.

[0045] For example, the connecting portion 36A is provided with a first male threaded portion 36X. For example, the hub shell 24 is provided with a first female threaded portion 24A. For example, the first male threaded portion 36X is screwed into the first female threaded portion 24A. The connecting portion 36A is provided with a second female threaded portion 36Y. For example, the second one-way clutch portion 38B is provided with a second male threaded portion 38X. The second male threaded portion 38X is screwed into the second female threaded portion 36Y.

[0046] For example, the connecting portion 36A includes a protruding portion 36B. For example, the torque transmission structure 36 includes a protruding portion 36B. For example, the protruding portion 36B protrudes to the outside of the hub shell 24 in an axial direction X1 with respect to the central axis C1. When the sprocket support 32 is attached to the hub shell 24, the protruding portion 36B protrudes from the inside of the hub shell 24 in a first axial direction A1. The protruding portion 36B is, for example, a single part and includes a portion that protrudes to the outside of the hub shell 24 and a portion that is housed inside the hub shell 24. For example, the protruding portion 36B extends outward in a radial direction X2 with respect to the central axis C1. In this embodiment, the protruding portion 36B is formed integrally with the connecting portion 36A.

[0047] The tool engagement portion 36C shown in Figures 7 and 22 is configured to engage with the tool T1. The tool engagement portion 36C is provided on the torque transmission structure 36 and is configured to allow engagement of the tool T1 from outside the hub shell 24. The torque transmission structure 36 is attached to the hub shell 24 using the tool engagement portion 36C.

[0048] For example, the tool engagement portion 36C is provided on the connecting portion 36A. For example, the connecting portion 36A includes the tool engagement portion 36C. For example, the tool engagement portion 36C is provided on the protruding portion 36B. For example, the tool engagement portion 36C is provided on the portion of the protruding portion 36B that protrudes to the outside of the hub shell 24. The tool engagement portion 36C is located radially outward from the sprocket support 32 in the radial direction X2 with respect to the central axis C1. For example, the tool engagement portion 36C is provided on the outer surface 36D formed radially outward from the central axis C1 of the protruding portion 36B. The outer surface 36D formed radially outward from the central axis C1 of the protruding portion 36B is located radially outward from the inner surface of the hub shell 24 in the radial direction X2. The inner surface of the hub shell 24 is located at the end of the hub shell 24 to which the connecting portion 36A is attached. The outer surface 36D formed radially outward with respect to the central axis C1 of the protrusion 36B is located radially X2 further outward than at least a portion of the outer surface of the hub shell 24. The outer surface of the hub shell 24 is located at the end of the hub shell 24 to which the connecting portion 36A is attached. The tool engagement portion 36C is located on the hub shell 24 side of the sprocket engagement portion 32A in the axial direction X1 with respect to the central axis C1. The tool engagement portion 36C is provided on the outer surface 36D such that, for example, the entire portion is located on the hub shell 24 side of the sprocket engagement portion 32A.

[0049] For example, tool T1 is used to attach the torque transmission structure 36 to the hub shell 24 when the hub shell 24 is positioned on the shaft member 26. For example, a spline 36Z is formed on the tool engagement portion 36C. Tool T1 engages with the spline 36Z. Tool T1 includes an annular portion on which an inner circumferential spline that engages with the spline 36Z is formed. Tool T1 is fitted into the tool engagement portion 36C from the axial direction X1, and by rotating the tool engagement portion 36C, the first male thread portion 36X is screwed into the first female thread portion 24A.

[0050] <Power generator 42> As shown in Figure 8, the power generation device 42 of this embodiment is configured as a hub assembly 20. The power generation device 42 includes, for example, a hub dynamo. The power generation device 42 comprises a first member 42A, a second member 42B, a magnet 44, an electrical component 58, and a magnetic shielding member 60. The first member 42A has a central axis C1. The power generation device 42 further comprises, for example, a shaft member 26. In this embodiment, the first member 42A includes the shaft member 26. For example, the second member 42B is provided so as to surround the outer surface 42Z of the first member 42A in the radial direction X2. The second member 42B is rotatable relative to the first member 42A about the central axis C1. In this embodiment, the second member 42B includes a hub shell 24. The power generation device 42 of this embodiment includes a power generation unit 40. For example, the power generation unit 40 generates electricity in conjunction with the rotation of the hub shell 24. The power generation unit 40 is positioned on the shaft member 26 so as not to rotate relative to the shaft member 26.

[0051] The second member 42B includes, for example, a metallic material. The second member 42B includes, for example, an aluminum alloy. The second member 42B is, for example, entirely formed from a metallic material. The magnet 44 is attached to the second member 42B. For example, the magnet 44 is provided on the inner surface of the second member 42B. The magnet 44 includes, for example, a plurality of magnets 44. The plurality of magnets 44 are provided on the inner surface of the second member 42B so as to be aligned in the circumferential direction X3.

[0052] The power generation device 42 includes, for example, a back yoke 42C which is positioned between the magnet 44 and the second member 42B in the radial direction X2, at least a portion of which is positioned between the magnet 44 and the second member 42B. The back yoke 42C is provided on the inner surface of the second member 42B so as to change the direction of travel of the magnetic field lines of the magnet 44. The back yoke 42C is provided so as to cover the entire outer surface of the magnet 44. The back yoke 42C is provided on the inner surface of the second member 42B. The magnet 44 is provided on the inner surface of the back yoke 42C.

[0053] As shown in Figures 7 to 9, the power generator 42 comprises a bobbin 46, a winding 50A, a lead wire 50B, and at least one lead wire guide portion 54. The power generator 42 includes, for example, a yoke 42D. The power generator 42 includes, for example, a claw-pole type dynamo. The power generator 42 generates electricity when a magnet 44 rotates with the hub shell 24, generating a current in the winding 50A provided on the shaft member 26. The power generation unit 40 is, for example, a part that constitutes a dynamo. The power generation unit 40 includes, for example, a bobbin 46, a winding 50A, and a yoke 42D. The power generation unit 40 further includes, for example, a magnet 44 and a back yoke 42C.

[0054] <Bobbin 46> As shown in Figures 9 and 10, the bobbin 46 is positioned on the shaft member 26 so as not to rotate relative to the shaft member 26. Therefore, if the shaft member 26 does not rotate, the bobbin 46 does not rotate. On the other hand, if the shaft member 26 rotates, the bobbin 46 rotates integrally with the shaft member 26. In this embodiment, the shaft member 26 does not rotate. The central axis of the bobbin 46 coincides with the central axis C1 of the hub shaft 22. The bobbin 46 includes a winding arrangement section 46A and a first flange 46B. The bobbin 46 also includes, for example, a second flange 46C. The winding 50A is wound on the bobbin 46. The winding 50A is wound on the winding arrangement section 46A of the bobbin 46. For example, the winding 50A is positioned on the winding arrangement section 46A. The second flange 46C is positioned to protrude radially X2 from the end of the winding arrangement section 46A opposite to the first flange 46B in the axial direction X1. The first axial direction A1 is the direction from the winding arrangement section 46A toward the first flange 46B. For example, the first axial direction A1 is the direction from the winding 50A toward the first bobbin end 46X. The second axial direction A2 is the direction from the winding arrangement section 46A toward the second bobbin end 46Y. The second bobbin end 46Y is the end opposite to the first bobbin end 46X in the axial direction X1.

[0055] As shown in Figures 9 and 10, for example, the first flange 46B extends radially outward from the end of the winding arrangement section 46A in the axial direction X1 with respect to the central axis C1 of the bobbin 46. The first flange 46B is positioned to protrude radially X2 from the end of the winding arrangement section 46A beyond the winding arrangement section 46A. For example, the first flange 46B includes a plurality of protrusions 48 that protrude in the first axial direction A1. The protrusions 48 project from the first flange 46B in the first axial direction A1. For example, the plurality of protrusions 48 include a first protrusion 48A and a second protrusion 48B. The first protrusion 48A protrudes from the first flange 46B in the first axial direction A1 so as not to contact the regulating member 52 in the first axial direction A1. For example, the second protrusion 48B protrudes a greater amount in the first axial direction A1 than the first protrusion 48A. The second projection 48B projects in the first axial direction A1 such that it extends beyond the restricting member 52 in the first axial direction A1. The plurality of projections 48 include, for example, a plurality of first projections 48A and a plurality of second projections 48B. In this embodiment, the plurality of projections 48 include 14 first projections 48A and 2 second projections 48B. The two second projections 48B are arranged adjacent to each other in the circumferential direction X3.

[0056] As shown in Figures 8 and 9, the yoke 42D is positioned on the bobbin 46. Part of the yoke 42D is positioned radially X2 inward from the bobbin 46. Part of the yoke 42D is positioned radially X2 outward from the bobbin 46. The generator 42 includes a plurality of yokes 42D. The plurality of yokes 42D are arranged side by side in the circumferential direction X3. Some of the yokes 42D are supported by a first flange 46B, and some of the yokes 42D are supported by a second flange 46C. Part of the yokes 42D supported by the first flange 46B is positioned between two adjacent projections 48.

[0057] The yoke 42D faces the magnet 44 in the radial direction X2. The yoke 42D includes a first yoke 42X and a second yoke 42Y. The first yoke 42X is positioned adjacent to the second yoke 42Y in the axial direction X1. The first yoke 42X is positioned on the first flange 46B so as to be located between two adjacent projections 48 in the circumferential direction X3. The second yoke 42Y is positioned on the second flange 46C so as to be located between two adjacent third projections 48C in the circumferential direction X3. The third projections 48C project from the second flange 46C in the second axial direction A2. The first yoke 42X and the second yoke 42Y are each composed of multiple yoke pieces.

[0058] <Leader line 50B> The lead wire 50B is electrically connected to the winding 50A. The lead wire 50B sends the current generated in the winding 50A to the outside of the power generation unit 40. The lead wire 50B includes, for example, a positive lead wire 50B and a negative lead wire 50B. The positive lead wire 50B and the negative lead wire 50B are each connected to both ends of the winding 50A. In this embodiment, the lead wire 50B is separate from the winding 50A. The lead wire 50B may be integrated with the winding 50A as long as it is electrically connected to the winding 50A. As shown in Figure 14, the positive lead wire 50B and the negative lead wire 50B drawn out on the first axial direction A1 side are electrically connected to the electrical component 58.

[0059] <Regulatory member 52> The power generation device 42 includes, for example, a restricting member 52. For example, a bobbin 46 and a restricting member 52 are attached to a shaft member 26. The restricting member 52 is adjacent to the first bobbin end 46X of the bobbin 46 in an axial direction X1 with respect to the central axis C1 of the bobbin 46, and restricts the movement of the bobbin 46 in the axial direction X1. The restricting member 52 restricts the movement of the bobbin 46 in the first axial direction A1. For example, the restricting member 52 is welded to the shaft member 26. The restricting member 52 is attached to the shaft member 26 by welding. For example, the restricting member 52 has a first surface 52A facing the first bobbin end 46X in the axial direction X1, and a second surface 52B opposite to the first surface 52A in the axial direction X1. A leader line 50B is arranged on the restricting member 52 from the first surface 52A to the second surface 52B when viewed from a direction perpendicular to the axial direction X1.

[0060] As shown in Figure 8, the restricting member 52 comprises, for example, a first restricting member 52C, a second restricting member 52D, and an additional restricting member 52X. The first restricting member 52C is adjacent to the first bobbin end 46X of the bobbin 46 in an axial direction X1 with respect to the central axis C1 of the bobbin 46, and restricts the movement of the bobbin 46 in the first axial direction A1. The first restricting member 52C is welded to the shaft member 26. The second restricting member 52D and the additional restricting member 52X are adjacent to the second bobbin end 46Y of the bobbin 46 in an axial direction X1, and restrict the movement of the bobbin 46 in the second axial direction A2. The additional restricting member 52X includes, for example, a C-ring. The power generation unit 40 is positioned on the shaft member 26 by positioning the second restricting member 52D and the additional restricting member 52X on the shaft member 26, and by welding the first restricting member 52C to the shaft member 26. In the axial direction X1, the second restricting member 52D is positioned between the second bobbin end 46Y and the additional restricting member 52X.

[0061] <Leader wire guide section 54> The lead wire guide portion 54 suppresses contact between the lead wire 50B and the regulating member 52. The lead wire guide portion 54 is configured, for example, to prevent the lead wire 50B from coming into contact with the regulating member 52. The lead wire guide portion 54 is provided integrally with the bobbin 46, for example. For example, at least one lead wire guide portion 54 includes a resin material. For example, the entire bobbin 46 is formed of a resin material. The lead wire guide portion 54 includes, for example, a thermosetting resin such as polyester resin and epoxy resin. For example, the lead wire guide portion 54 is formed of a resin material.

[0062] For example, at least one leader guide portion 54 is provided on the first flange 46B. For example, at least one leader guide portion 54 is provided on at least one of the plurality of protrusions 48. At least one leader guide portion 54 is provided on the second protrusion 48B. At least one leader guide portion 54 is provided in the recess of the second protrusion 48B that is recessed in the radial direction X2. The through portion 54A of the leader guide portion 54 is included in the recess of the second protrusion 48B that is recessed in the radial direction X2. The through portion 54A of the leader guide portion 54 is included in the hole of the second protrusion 48B that extends in the axial direction X1.

[0063] The leader guide portion 54 is configured to lead the leader wire 50B toward the first axial direction A1 beyond the regulating member 52. At least one leader guide portion 54 is positioned on at least a portion of the leader wire 50B and extends in the axial direction X1. At least one leader guide portion 54 penetrates the second projection 48B in the axial direction X1, and the leader wire 50B is positioned on the portion of at least one leader guide portion 54 that penetrates the second projection 48B in the axial direction X1. For example, at least one leader guide portion 54 includes, for example, a penetration portion 54A on which the leader wire 50B is positioned and which penetrates in the axial direction X1. The penetration portion 54A penetrates the second projection 48B in the axial direction X1. For example, at least one leader guide portion 54 is configured to extend beyond the first surface 52A in the first axial direction A1. The lead wire guide portion 54 is configured to extend beyond the second surface 52B in the first axial direction A1. The lead wire guide portion 54 may also be configured not to extend beyond the second surface 52B in the first axial direction A1.

[0064] For example, at least one leader guide section 54 includes multiple leader guide sections 54. One leader guide section 54 is provided with, for example, one leader 50B. The number of at least one leader guide sections 54 is, for example, the number of leader 50B. In this embodiment, at least one leader guide section 54 includes two leader guide sections 54. The two leader guide sections 54 are provided on different second protrusions 48B, and a positive leader 50B and a negative leader 50B are provided on each. The two second protrusions 48B on which the leader guide sections 54 are provided are adjacent in the circumferential direction X3 such that there are no other protrusions 48 between the two second protrusions 48B.

[0065] <Leader wire guide placement section 56> As shown in Figures 9 and 11, the regulating member 52 is provided with a leader wire guide arrangement section 56. At least a portion of one leader wire guide section 54 is arranged in the leader wire guide arrangement section 56. For example, the leader wire guide arrangement section 56 includes at least one hole extending in the axial direction X1 and a recess 56B recessed in the radial direction X2 with respect to the central axis C1 of the bobbin 46. In this embodiment, the leader wire guide arrangement section 56 includes a recess 56B recessed in the radial direction X2. The leader wire guide section 54 is arranged in the recess 56B. The leader wire guide arrangement section 56 may also include a hole 56A extending in the axial direction X1. If the leader wire guide arrangement section 56 includes a hole 56A extending in the axial direction X1, the leader wire guide section 54 may be arranged in the hole 56A. The shape of the leader wire guide arrangement section 56 is determined according to the shape of the leader wire guide section 54.

[0066] <Electrical component 58> As shown in Figure 8, the electrical component 58 is located inside the hub assembly 20. For example, the electrical component 58 is located in the internal space H1 of the hub shell 24. For example, the electrical component 58 is located at a different position from the magnet 44 in the axial direction X1 with respect to the central axis C1. The electrical component 58 is located so as not to overlap with the magnet 44 in the axial direction X1. For example, the electrical component 58 includes a capacitor 64X. For example, the electrical component 58 includes at least one capacitor 64X. For example, the capacitor 64X is charged with electricity generated in the winding 50A.

[0067] For example, electrical component 58 includes a magnetic sensor 76. For example, electrical component 58 includes an electrical circuit board 58A. For example, electrical circuit board 58A extends in an axial direction X1 with respect to the central axis C1. Electrical circuit board 58A is positioned differently from the magnet 44 in the axial direction X1. Electrical circuit board 58A is positioned so as not to overlap with the magnet 44 in the axial direction X1. Electrical circuit board 58A is mounted on the shaft member 26. Electrical circuit board 58A includes an additional electrical circuit board 58Y extending in the radial direction X2. Sensor 58X is positioned on the additional electrical circuit board 58Y such that at least a portion of it overlaps with the magnet 44 when viewed from the axial direction X1. Sensor 58X may include, for example, a portion of the magnetic sensor 76. Sensor 58X may include, for example, a sensor that detects acceleration and at least one of tilt. Sensor 58X may include a gyro sensor.

[0068] <Magnetic shielding member 60> The magnetic shielding member 60 is positioned inside the second member 42B so as to change the direction of propagation of the magnetic field lines of the magnet 44. The magnetic shielding member 60 changes the direction of propagation of magnetic field lines generated at least from the end of the magnet 44 in the first axial direction A1. When viewed from the axial direction X1, at least a portion of the magnetic shielding member 60 overlaps with the magnet 44, is located between the magnet 44 and the electrical component 58 in the axial direction X1, and extends radially X2 with respect to the central axis C1. When viewed from the axial direction X1, the magnetic shielding member 60 overlaps with the entire magnet 44. Therefore, when viewed from the axial direction X1, the magnetic shielding member 60 includes a region that overlaps with the entire magnet 44. The magnetic shielding member 60 is positioned in the same location as the regulating member 52 in the axial direction X1. For example, the magnetic shielding member 60 includes a soft magnetic material.

[0069] For example, the magnetic shielding member 60 extends inward from the inner surface of the second member 42B in the radial direction X2. For example, the first radial distance Y1 is smaller than the second radial distance Y2. For example, the first radial distance Y1 is the distance from the central axis C1 to the magnetic shielding member 60 in the radial direction X2. For example, the first radial distance Y1 is the distance from the central axis C1 to the innermost end of the magnetic shielding member 60 in the radial direction X2. For example, the second radial distance Y2 is the distance from the central axis C1 to the magnet 44 in the radial direction X2. For example, the second radial distance Y2 is the distance from the central axis C1 to the innermost end of the magnet 44 in the radial direction X2.

[0070] For example, the magnetic shielding member 60 is magnetically connected to the back yoke 42C. For example, the magnetic shielding member 60 is positioned to contact the back yoke 42C. For example, the magnetic shielding member 60 is formed integrally with the back yoke 42C. For example, the magnetic shielding member 60 is positioned around the entire circumference in the circumferential direction X3 with respect to the central axis C1. The magnetic shielding member 60 is positioned such that the first radial distance Y1 is substantially the same around the entire circumference. For example, even if the magnet 44 is configured to rotate around the central axis C1 with respect to the magnetic shielding member 60, the magnetic shielding member 60 can change the direction of travel of the magnetic field lines of the magnet 44 because the magnetic shielding member 60 is positioned around the entire circumference. The magnetic shielding member 60 is formed, for example, by bending the end of the back yoke 42C radially inward. For example, the magnetic shielding member 60 is positioned to contact the magnet 44. The magnetic shielding member 60 is positioned to contact at least the end of the magnet 44 in the first axial direction A1.

[0071] <Housing 62 and housing restricting member 62X> As shown in Figure 8, the hub assembly 20 further comprises, for example, a housing 62 that houses at least a portion of the electrical components 58, and a housing restricting member 62X that restricts the movement of the housing 62 relative to the shaft member 26. At least a portion of the electrical components 58 are provided in the housing 62. The housing 62 is provided inside the hub shell 24, but separately from the hub shell 24. The housing 62 includes, for example, a resin material. The housing 62 houses at least a portion of the electrical components 58. For example, at least a portion of the electrical components 58 are housed in the internal space H2 of the housing 62. For example, the housing 62 includes an inner wall 62A, an outer wall 62B, an end wall 62C, and a lid portion 62D. For example, the housing 62 has a housing portion 64 for arranging the electrical components 58. The housing 62 includes a shaft member receiving portion 66 and an opening 68. The housing 62 has, for example, a U-shape when viewed from the axial direction X1. For example, the opening 68 corresponds to a U-shaped opening, and the shaft member receiving portion 66 corresponds to the bottom of a U-shaped structure.

[0072] As shown in Figures 12 to 14, for example, the inner wall 62A defines the shaft member receiving portion 66 and the opening 68. The inner wall 62A includes a plate-like member extending in the axial direction X1. For example, the outer wall 62B is located radially outward from the inner wall 62A with respect to the central axis C1. The outer wall 62B includes a plate-like member extending in the axial direction X1. For example, the end wall 62C connects the inner wall 62A and the outer wall 62B and defines at least partially the internal space H2 of the housing 62. The end wall 62C includes a plate-like member extending in a direction perpendicular to the axial direction X1. For example, the lid portion 62D covers at least a portion of the internal space H2. The lid portion 62D includes a plate-like member extending in a direction perpendicular to the axial direction X1. For example, the inner wall 62A, the outer wall 62B and the end wall 62C are integrally formed to form the internal space H2. For example, the lid portion 62D is formed separately from the inner wall 62A, the outer wall 62B, and the end wall 62C, and is attached to the inner wall 62A and the outer wall 62B. The lid portion 62D is attached to the inner wall 62A and the outer wall 62B in a state in which at least a portion of the electrical components 58 are housed in the internal space H2 of the housing 62.

[0073] For example, the housing section 64 includes a first housing section 64A, a second housing section 64B, and a third housing section 64C. For example, the second housing section 64B is positioned so as to sandwich the central axis C1 between the first housing section 64A and the third housing section 64C. For example, the third housing section 64C is positioned between the first housing section 64A and the second housing section 64B in the circumferential direction X3 with respect to the central axis C1. For example, at least one of the first housing section 64A and the second housing section 64B houses at least one capacitor 64X. At least one capacitor 64X includes two capacitors 64X. Depending on the number of at least one capacitor 64X, at least one capacitor 64X can be optionally housed in at least one of the first housing section 64A and the second housing section 64B. Two capacitors 64X are each housed in the first housing section 64A and the second housing section 64B.

[0074] As shown in Figure 8, the housing restricting member 62X is configured to restrict the movement of the housing 62 relative to the shaft member 26. The housing restricting member 62X is attached to the housing 62, for example, by screws or the like. The housing restricting member 62X includes, for example, a plate-shaped member extending perpendicular to the axial direction X1. The housing restricting member 62X is attached to the shaft member 26 so as not to move relative to the shaft member 26 by being attached to the power generation unit 40 by screws or the like at a portion different from the portion attached to the housing 62. The housing restricting member 62X is attached to, for example, the first restricting member 52C.

[0075] As shown in Figure 4, the housing 62 is configured to surround at least a portion of the shaft member 26. For example, the shaft member 26 includes a first shaft portion 26X. For example, the housing 62 is positioned in the axial direction X1 with respect to the central axis C1 of the first shaft portion 26X. The dimension D1 of the first shaft portion 26X is, for example, the largest outer diameter of the outer surface 26B of the shaft member 26 in the direction perpendicular to the axial direction X1 of the first shaft portion 26X.

[0076] For example, the shaft member 26 includes a first shaft portion 26X and a second shaft portion 26Y. For example, the second shaft portion 26Y is different from the first shaft portion 26X in the axial direction X1. The second shaft portion 26Y is positioned on the second axial direction A2 side relative to the first shaft portion 26X. For example, the dimension D2 of the second shaft portion 26Y in the radial direction X2 is larger than the dimension D1 of the first shaft portion 26X in the radial direction X2. For example, a power generation unit 40 is provided on the second shaft portion 26Y. The dimension D2 of the second shaft portion 26Y is such that, when the housing 62 is positioned on the shaft member 26, the housing 62 cannot move beyond the second shaft portion 26Y in the axial direction X1. Therefore, the housing 62 cannot be inserted into the shaft member 26 from the second shaft portion 26Y toward the first shaft portion 26X in the axial direction X1.

[0077] For example, the shaft member 26 includes a third shaft portion 26Z. For example, the third shaft portion 26Z is different from both the first shaft portion 26X and the second shaft portion 26Y in the axial direction X1. The third shaft portion 26Z is positioned on the first axial direction A1 side relative to the first shaft portion 26X. For example, the second shaft portion 26Y and the third shaft portion 26Z are positioned so as to sandwich the first shaft portion 26X. For example, the dimension D3 of the third shaft portion 26Z in the radial direction X2 is greater than the dimension D1 of the first shaft portion 26X in the radial direction X2. For example, a bearing 34 is attached to the third shaft portion 26Z. The dimension D3 of the third shaft portion 26Z is such that, when the housing 62 is positioned on the shaft member 26, the housing 62 cannot move beyond the third shaft portion 26Z in the axial direction X1. Therefore, the housing 62 cannot be inserted into the shaft member 26 in the axial direction X1, from the third shaft portion 26Z toward the first shaft portion 26X.

[0078] The shaft member receiving portion 66 receives the shaft member 26. The housing 62 is positioned on the shaft member 26 by receiving the shaft member 26 into the shaft member receiving portion 66 from the radial direction X2 through the opening 68. The shaft member receiving portion 66 is positioned on the radial inner surface of the inner wall 62A. For example, the shaft member receiving portion 66 is configured to conform to the shape of at least a part of the shaft member 26 in the circumferential direction X3 with respect to the central axis C1. For example, if the shaft member receiving portion 66 is configured to conform to the shape of the arc-shaped portion of the outer circumferential surface of the shaft member 26, the shaft member receiving portion 66 has a shape corresponding to the arc shape of the outer circumferential surface of the shaft member 26. For example, the shaft member receiving portion 66 is configured to conform to the shape of the portion of the shaft member 26 that is between 90 degrees and 200 degrees in the circumferential direction X3. In other words, the portion of the shaft member receiving portion 66 that conforms to the shape of the shaft member 26 has a length corresponding to between 90 degrees and 200 degrees in the circumferential direction X3. The shaft member receiving portion 66 is configured, for example, to conform to the shape of a substantially 180-degree portion of the shaft member 26 in the circumferential direction X3.

[0079] The opening 68 communicates with the shaft member receiving portion 66 so that the shaft member 26 is received into the shaft member receiving portion 66 through the opening 68. The opening 68 is connected to the shaft member receiving portion 66 in the radial direction X2 with respect to the central axis C1. For example, the opening 68 is located in a different portion of the circumferential direction X3 from the portion of the shaft member receiving portion 66 that is along the shaft member 26, and is configured to extend from one end of the housing 62 to the other in the axial direction X1 with respect to the central axis C1. The opening 68 is configured to extend from the inner wall 62A to the outer wall 62B in the radial direction X2.

[0080] An opening 68 is located on the radial inner surface of the inner wall 62A in a portion where the shaft member receiving portion 66 is not located. The opening 68 includes a first side portion 68A and a second side portion 68B. On the radial inner surface of the inner wall 62A, the shaft member receiving portion 66 is located adjacent to the first side portion 68A, and the second side portion 68B is located adjacent to the shaft member receiving portion 66. In short, in the circumferential direction X3, the first side portion 68A is located at one end of the shaft member receiving portion 66, and the second side portion 68B is located at the other end of the shaft member receiving portion 66. The first side portion 68A and the second side portion 68B are located parallel to each other.

[0081] For example, the opening 68 forms a shaft member passage path 68C through which the shaft member 26 can pass. The shaft member passage path 68C is a continuous passage from the outer wall 62B to the inner wall 62A of the housing 62. For example, the shaft member 26 is configured to be received into the shaft member receiving portion 66 via the shaft member passage path 68C. The shaft member 26 passes through the shaft member passage path 68C so as to be received into the shaft member receiving portion 66. For example, the opening dimension D4 of the opening 68 is greater than or equal to the dimension D1 of the first shaft portion 26X in the radial direction X2. The opening dimension D4 of the opening 68 is, for example, the distance from the first side portion 68A to the second side portion 68B when viewed from the axial direction X1. The opening dimension D4 of the opening 68 is, for example, greater than the dimension D1 of the first shaft portion 26X in the radial direction X2. In this embodiment, since the first side portion 68A and the second side portion 68B are arranged in parallel, the opening dimension D4 is constant through the shaft member passage path 68C. If the shaft member 26 can pass through the shaft member passage path 68C, the opening dimension D4 of the opening 68 may differ in part through the shaft member passage path 68C.

[0082] <Connector 70> As shown in Figures 8 and 14, for example, at least one connector 70 connects an electrical component 58 housed in the housing 62 to an electrical cable 88 located outside the housing 62. For example, at least one connector 70 is located in at least one of the first housing section 64A and the second housing section 64B. The connector 70 is located in the second housing section 64B, for example. At least one connector 70 may include multiple connectors 70, with connectors 70 located in both the first housing section 64A and the second housing section 64B. The connector 70 is electrically connected to at least the electrical circuit board 58A. The connector 70 is electrically connected to the capacitor 64X. The connection portion of the connector 70 is exposed from the outer wall 62B of the housing 62. To protect the connector 70 when the electrical cable 88 is connected to it, an O-ring is provided on the connector 70. The socket of the connector 70 is positioned to face perpendicular to the axial direction X1 so that the electrical cable 88 can be connected from a direction perpendicular to the axial direction X1. A portion of the connector 70 protrudes outward from the outer wall 62B. An annular member is provided between the outer wall 62B and the connector 70. The annular member is, for example, an O-ring. The annular member prevents dust, liquids, etc. from entering the housing 64 through the gap between the outer wall 62B and the connector 70.

[0083] <Rotating device 72> As shown in Figures 7 and 17, for example, the hub assembly 20 includes a rotating device 72 for a human-powered vehicle. The rotating device 72 in this embodiment is configured as the hub assembly 20. The rotating device 72 comprises a first member 72A, a second member 72B, at least one magnet 74, and at least one magnetic sensor 76. The rotating device 72 comprises a first member 72A, a second member 72B, a magnet 74, a magnetic sensor 76, and a magnetic generating component 72X. The magnetic generating component 72X is configured not to rotate relative to the first member 72A and is different from the magnet 74. Therefore, when the first member 72A does not rotate, the magnetic generating component 72X does not rotate. On the other hand, when the first member 72A rotates, the magnetic generating component 72X rotates integrally with the first member 72A. The magnetic generating component 72X is configured not to rotate relative to the first member 72A by being mounted on an electrical circuit board 58A. The magnetic generating component 72X includes an electrical component that generates magnetism. The magnetic generating component 72X includes, for example, an inductor. The magnetic generating component 72X includes, for example, a coil. The magnetic generating component 72X generates magnetism when electricity is passed through it. The rotating device 72 further includes, for example, an electrical circuit board 58A. The rotating device 72 includes, for example, a control unit 78.

[0084] The first member 72A has a central axis C1. In this embodiment, the first member 72A is a shaft member 26. The second member 72B rotates relative to the first member 72A around the central axis C1. The second member 72B includes at least one of a hub shell 24 and a sprocket support 32. In this embodiment, the second member 72B includes, for example, a sprocket support 32.

[0085] <Magnetic sensor 76> For example, the magnetic sensor 76 is configured to detect the magnetism of a magnetic component 74X that is different from the magnet 44. The magnetic component 74X is, for example, the magnet 74. The magnetic sensor 76 is mounted on the electrical circuit board 58A. The magnetic sensor 76 is positioned on the electrical component 58 side of the magnetic shielding member 60 in the axial direction X1. The magnetic sensor 76 is configured not to rotate relative to the first member 72A and detects the magnetism of the magnet 74. Therefore, if the first member 72A does not rotate, the magnetic sensor 76 does not rotate. On the other hand, if the first member 72A rotates, the magnetic sensor 76 rotates together with the first member 72A. At least one magnetic sensor 76 is configured not to rotate relative to the first member 72A and detects the magnetism of at least one magnet 74. At least one magnetic sensor 76 is configured not to rotate relative to the first member 72A. The magnetic sensor 76 is configured not to rotate relative to the first member 72A by being mounted on the electrical circuit board 58A. The magnetic sensor 76 is configured, for example, separately from the first member 72A. The magnetic sensor 76 is provided on the first member 72A so that it can rotate integrally with the first member 72A. For example, at least one magnetic sensor 76 is positioned so as not to face at least one magnet 74. The magnetic sensor 76 is positioned so as not to face the magnet 74 in the axial direction X1. For example, at least one magnetic sensor 76 is positioned in a first region R1 in the radial direction X2.

[0086] As shown in Figures 8 and 15, at least one magnetic sensor 76 has a detection surface 76X for detecting the magnetism of a magnet 74. A magnetic detection element is positioned on the detection surface 76X. The detection surface 76X is positioned not perpendicular to the magnetization direction M1 in which the south and north poles of at least one magnet 74 are aligned. For example, the magnetization direction M1 is parallel to the axial direction X1. The detection surface 76X is positioned at an angle to the magnetization direction M1 or parallel to the magnetization direction M1. For example, the detection surface 76X is positioned parallel to the magnetization direction M1.

[0087] The magnetic flux density generated by the magnet 74 decreases as you move away from the magnet 74 in a direction that intersects the magnetization direction M1. Also, the direction of propagation of the magnetic field lines of the magnet 74 curves in a direction that intersects the magnetization direction M1 as you move away from the magnet 74. By positioning the magnetic sensor 76 offset from the magnet 74 in the axial direction X1 and radially X2, the magnetic sensor 76 can efficiently detect the magnetism of the magnet 74.

[0088] As shown in Figures 15 and 16, the magnetic sensor 76 includes a first magnetic sensor 76A and a second magnetic sensor 76B. The first magnetic sensor 76A detects the magnetism of the magnet 74. The second magnetic sensor 76B detects the magnetism of the magnet 74 independently of the first magnetic sensor 76A. The first magnetic sensor 76A and the second magnetic sensor 76B each include, for example, a separate detection element. The first magnetic sensor 76A and the second magnetic sensor 76B are located apart from each other.

[0089] <Magnet 74> As shown in Figures 15 and 16, at least one magnet 74 is provided on the second member 72B. The magnet 74 is provided on the second member 72B. The magnet 74 is configured to rotate relative to the first member 72A around the central axis C1 when the second member 72B rotates relative to the first member 72A around the central axis C1. When the second member 72B rotates relative to the first member 72A around the central axis C1, the magnet 74 is configured to rotate integrally with the second member 72B around the central axis C1. At least one magnet 74 includes, for example, a first magnet 74A and a second magnet 74B. The second magnet 74B is located on the opposite side of the first magnet 74A with respect to the central axis C1 in the circumferential direction X3. The second magnet 74B is located, for example, on the opposite side of the first magnet 74A with respect to the central axis C1 in the radial direction X2. In short, the first magnet 74A and the second magnet 74B are positioned with the central axis C1 in between them.

[0090] At least one magnet 74 is positioned differently from at least one magnetic sensor 76 in the radial direction X2 with respect to the central axis C1. At least one magnet 74 is positioned differently from at least one magnetic sensor 76 in the radial direction X2 without overlapping with at least one magnetic sensor 76. For example, the magnet 74 is positioned radially outward from the magnetic sensor 76 in the radial direction X2. At least one magnet 74 is positioned differently from at least one magnetic sensor 76 in the axial direction X1 with respect to the central axis C1. At least one magnet 74 is positioned differently from at least one magnetic sensor 76 in the axial direction X1 without overlapping with at least one magnetic sensor 76. For example, the magnet 74 is positioned on the first axial direction A1 side of the magnetic sensor 76 in the axial direction X1. For example, the magnet 74 is positioned differently from the electrical substrate 58A in the axial direction X1. The magnet 74 is positioned differently from the electrical substrate 58A in the axial direction X1 without overlapping with the electrical substrate 58A. The magnet 74 is positioned, for example, in the axial direction X1, on the side of the first axial direction A1 relative to the electrical substrate 58A. For example, at least one magnet 74 is positioned in a second region R2 that does not overlap with the first region R1 in the radial direction X2. The first region R1 is, for example, a circular region located radially X2 inward from the end of the innermost magnet 74 in the radial direction X2. The second region R2 is a region located between the circle formed by the end of the innermost magnet 74 in the radial direction X2 and the circle formed by the end of the outermost magnet 74 in the radial direction X2. The first region R1 may also be, for example, a circular region located radially X2 inward from the end of the outermost magnet 74 in the radial direction X2.

[0091] <Arrangement of magnetic generating component 72X, magnetic sensor 76, and magnet 74> For example, the magnetic generating component 72X and the magnetic sensor 76 are provided on the electrical circuit board 58A. The magnetism of the magnetic generating component 72X reaches the magnetic sensor 76 so as to affect the first magnetic sensor 76A and the second magnetic sensor 76B similarly. The first magnetic sensor 76A and the second magnetic sensor 76B are provided on the side of the electrical circuit board 58A on which the magnetic generating component 72X is provided. The first magnetic sensor 76A is positioned on the opposite side of the second magnetic sensor 76B with respect to the reference plane P1. The reference plane P1 includes the central axis C1 and passes through the magnetic generating component 72X. The reference plane P1 includes, for example, the entire central axis C1. For example, the reference plane P1 passes through the center of the magnetic generating component 72X. The magnetic generating component 72X is provided on the electrical circuit board 58A so as to generate magnetism symmetrically with respect to the reference plane P1. For example, the first magnetic sensor 76A and the second magnetic sensor 76B are positioned symmetrically with respect to the reference plane P1. The first magnetic sensor 76A and the second magnetic sensor 76B are arranged symmetrically with respect to the reference plane P1. The detection surface 76X of the first magnetic sensor 76A and the detection surface 76X of the second magnetic sensor 76B are arranged symmetrically with respect to the reference plane P1.

[0092] The first magnetic sensor 76A, the second magnetic sensor 76B, and the magnetic generating component 72X are arranged on a predetermined plane P2. The predetermined plane P2 is a plane perpendicular to the reference plane P1. The predetermined plane P2 includes, for example, the surface of the electrical substrate 58A on which the first magnetic sensor 76A, the second magnetic sensor 76B, and the magnetic generating component 72X are provided. The first magnetic sensor 76A, the second magnetic sensor 76B, and the magnetic generating component 72X are arranged on the predetermined plane P2 such that their respective centers form an isosceles triangle. In the isosceles triangle formed by the first magnetic sensor 76A, the second magnetic sensor 76B, and the magnetic generating component 72X, the magnetic generating component 72X is located at the vertex of the apex angle, and the first magnetic sensor 76A and the second magnetic sensor 76B are located at the vertices of the base angles, respectively.

[0093] For example, the first distance Z1 is equal to the second distance Z2. For example, the first distance Z1 is the distance from the first magnetic sensor 76A to the magnetic generating component 72X. For example, the first distance Z1 is the shortest distance from the first magnetic sensor 76A to the magnetic generating component 72X. For example, the first distance Z1 is the distance from the center of the detection surface 76X of the first magnetic sensor 76A to the center of the magnetic generating component 72X. For example, the second distance Z2 is the distance from the second magnetic sensor 76B to the magnetic generating component 72X. For example, the second distance Z2 is the shortest distance from the second magnetic sensor 76B to the magnetic generating component 72X. For example, the second distance Z2 is the distance from the center of the detection surface 76X of the second magnetic sensor 76B to the center of the magnetic generating component 72X.

[0094] <Control Unit 78> As shown in Figures 16 and 17, the control unit 78 is configured to determine the rotation of the second member 72B relative to the first member 72A in accordance with the magnetism of the magnet 74 detected by the magnetic sensor 76. The control unit 78 includes an arithmetic processing unit that executes a predetermined control program. The arithmetic processing unit includes, for example, a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). The control unit 78 may include one or more microcomputers. The control unit 78 may include multiple arithmetic processing units located at different locations. For example, the control unit 78 further includes a storage unit. The storage unit stores various control programs and information used for various control processes. The storage unit includes, for example, non-volatile memory and volatile memory. Non-volatile memory includes, for example, at least one of ROM (Read-Only Memory), EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), and flash memory. Volatile memory includes, for example, RAM (Random Access Memory).

[0095] The control unit 78 is electrically connected to the first magnetic sensor 76A and the second magnetic sensor 76B so that the magnetism detected by the first magnetic sensor 76A and the second magnetic sensor 76B is input as a signal. The control unit 78 is electrically connected to an external electrical component 16 located outside the hub assembly 20 via an output control circuit 78A. The control unit 78 outputs information to the external electrical component 16 regarding the rotation of the second member 72B relative to the first member 72A. The output control circuit 78A is electrically connected to the external electrical component 16 via an electrical cable 88. The electrical cable 88 electrically connects the electrical component 58 and the external electrical component 16. The external electrical component 16 includes, for example, components for a human-powered vehicle that are different from the hub assembly 20. The external electrical component 16 includes, for example, a drive unit for a human-powered vehicle. The output control circuit 78A is a circuit that operates to stabilize the electrical output of the control unit 78. The control unit 78 is mounted on the electrical circuit board 58A so that it is supplied with power from the power generation unit 40, for example, via a protection circuit 78B. The protection circuit 78B operates to ensure that the amount of power supplied to the control unit 78 is stable.

[0096] <Electrical Cable 88> As shown in Figures 4 and 5, for example, the electrical cable 88 is electrically connected to the electrical component 58. For example, the electrical cable 88 is connected to the control unit 78. For example, the electrical cable 88 transmits signals from the magnetic sensor 76 to the outside of the hub assembly 20. For example, the electrical cable 88 sends power generated by the power generation unit 40 to the outside of the hub assembly 20. For example, the electrical cable 88 is arranged along the hub shaft 22 inside the hub shell 24. The electrical cable 88 is arranged on the outer surface of the hub shaft 22 so as to extend in the axial direction X1 of the hub shaft 22 inside the hub shell 24. The outer surface of the hub shaft 22 may be provided with a wiring section 94 extending in the axial direction X1 for arranging the electrical cable 88. The wiring section 94 includes, for example, a groove 94A extending in the axial direction X1. The wiring section 94 may be arranged inside the hub shell 24 so that the electrical cable 88 passes through the hollow portion of the shaft member 26.

[0097] For example, the electrical cable 88 has a first surface 88X facing radially inward in the housing portion 88A. The housing portion 88A is the portion of the electrical cable 88 that is housed inside the hub shell 24. The housing portion 88A is, for example, the portion of the electrical cable 88 that is housed inside the hub assembly 20. For example, the first surface 88X extends from the housing portion 88A to the exposed portion 88B. The exposed portion 88B is the portion of the electrical cable 88 that is exposed to the outside of the hub shell 24. The exposed portion 88B is exposed to the outside of the hub assembly 20. For example, the electrical cable 88 has a second surface 88Y opposite to the first surface 88X. For example, the second surface 88Y extends from the housing portion 88A to the exposed portion 88B.

[0098] <Cable guide section 90> As shown in Figures 2 to 4, for example, the electrical cable 88 is guided by the cable guide portion 90 so as to extend radially X2 outside the hub shell 24. For example, the electrical cable 88 is guided by at least one cable guide portion 90 so as to extend radially X2 of the central axis C1. The cable guide portion 90 guides the electrical cable 88 so that it does not come into contact with at least one of the hub shell 24 and the sprocket support 32. At least one cable guide portion 90 is provided between the first frame contact end face 22B and the second frame contact end face 22C in the axial direction X1 and is configured to guide the electrical cable 88. The cable guide portion 90 is configured to guide the electrical cable 88 so that it passes between the frame 14 of the human-powered vehicle 10 and the end 26C of the shaft member 26 in the axial direction X1. At least one cable guide portion 90 is provided at least partially on at least one end cap 28. For example, at least one cable guide portion 90 is provided on the end cap 28. In this embodiment, the cable guide portion 90 is provided on the end cap 28X. In this embodiment, the cable guide portion 90 is provided on the first frame contact end face 22B and is a recess extending inward in the axial direction X1 from the first frame contact end face 22B. If the shaft member 26 does not include the end cap 28, the cable guide portion 90 may be provided on the end 26C of the shaft member 26. A part of the cable guide portion 90 is, for example, located inside the end cap 28X in the axial direction X1. The electrical cable 88 is pulled out from inside the end cap 28X through the recess of the cable guide portion 90. When the electrical cable 88 is pulled out from the recess of the cable guide portion 90, the electrical cable 88 comes into contact with the end of the recess of the cable guide portion 90. The portion of the cable guide portion 90 that the electrical cable 88 comes into contact with is the contact portion 90B. By having the electrical cable 88 come into contact with the contact portion 90B, it is possible to prevent the electrical cable 88 from coming into contact with a rotating body such as the sprocket support 32 or the hub shell 24.When the electrical cable 88 is guided in the groove 94A and positioned to the end of the hub shaft 22, the hub assembly 20 may include, for example, a component that abuts against the second surface 88Y of the electrical cable 88. The component that abuts against the second surface 88Y of the electrical cable 88 includes an annular member through which the electrical cable 88 and the hub shaft 22 pass. For example, by attaching the annular component to the hub shaft 22, it is possible to prevent the electrical cable 88 from moving away from the hub shaft 22. The annular component of the component that abuts against the second surface 88Y of the electrical cable 88 has the function of a contact portion 90B.

[0099] At least one cable guide portion 90 penetrates the hub shaft 22 in a radial direction X2 with respect to the central axis C1, at least partially. For example, the cable guide portion 90 is provided in a hollow portion and penetrates the peripheral wall portion 22A. At least one cable guide portion 90 may be a hole penetrating the peripheral wall portion 22A. For example, at least one cable guide portion 90 is a notch 90A provided in at least one of the first frame contact end face 22B and the second frame contact end face 22C. The notch 90A is formed to cut across a portion of the peripheral wall portion 22A.

[0100] For example, the cable guide portion 90 has a contact portion 90B. The electrical cable 88 contacts the contact portion 90B. The contact portion 90B includes a portion of the inner surface of the end cap 28 that contacts the portion of the electrical cable 88 that is being guided. The contact portion 90B is positioned on the first axial direction A1 side of the sprocket support 32. The cable guide portion 90 can guide the electrical cable 88 by the contact portion 90B such that the portion of the electrical cable 88 that is being guided in the radial direction X2 is positioned on the first axial direction A1 side of the sprocket support 32.

[0101] <Auxiliary member 92> As shown in Figures 2 to 4, the auxiliary member 92 is configured to guide at least a portion of the exposed portion 88B in the radial direction X2 with respect to the central axis C1. The auxiliary member 92 is attached, for example, to the hub shaft 22. The auxiliary member 92 is attached, for example, to the end cap 28. The auxiliary member 92 is positioned between the first frame contact end face 22B and the second frame contact end face 22C. For example, the auxiliary member 92 is formed by a linear member. For example, the hub shaft 22 includes at least one of a hole 22X and a recess 22Y into which the end of the linear member is inserted. At least one of the holes 22X and recess 22Y of the hub shaft 22 is formed, for example, in the end cap 28. The auxiliary member 92 is attached to the hub shaft 22 by inserting the end of the linear member into at least one of the holes 22X and recess 22Y. The hub shaft 22 includes both the hole 22X and the recess 22Y.

[0102] As shown in Figures 20 and 21, for example, the auxiliary member 92 includes a hub shaft mounting portion 92A. The hub shaft mounting portion 92A is inserted into at least one of the holes 22X and recesses 22Y of the hub shaft 22. For example, the auxiliary member 92 includes a first cable support portion 92B. The first cable support portion 92B contacts the first surface 88X. For example, the auxiliary member 92 includes a second cable support portion 92C. The second cable support portion 92C contacts the second surface 88Y. The hub shaft mounting portion 92A, the first cable support portion 92B, and the second cable support portion 92C are integrally formed by a linear member.

[0103] For example, the auxiliary member 92 is configured to be switchable between a first state and a second state. In Figure 21, the auxiliary member 92 in the first state is shown by a solid line. For example, the first state is a state in which at least a portion of the exposed portion 88B of the electrical cable 88 is guided radially X2. In the first state, the auxiliary member 92 guides the electrical cable 88 radially X2 such that the exposed portion 88B moves away from the central axis C1. In Figure 21, the auxiliary member 92 in the second state is shown by a dashed line. For example, the second state is a state in which at least a portion of the exposed portion 88B of the electrical cable 88 is guided axially X1. In the second state, the auxiliary member 92 guides the electrical cable 88 radially X2 inward such that the exposed portion 88B moves closer to the central axis C1. In the second state, the auxiliary member 92 guides the exposed portion 88B of the electrical cable 88 axially X1.

[0104] For example, when the hub assembly 20 is attached to the frame 14, the auxiliary member 92 is set to the first state. For example, when the sprocket 12 is attached to the sprocket support 32, and when the sprocket 12 is removed from the sprocket support 32, the auxiliary member 92 is set to the second state. Switching between the first and second states is achieved, for example, by an operator pushing or pulling the auxiliary member 92.

[0105] <How to assemble the hub assembly 20> The shaft member 26 is provided with a tool engagement portion 84 on the surface 84A of the end portion 26C of the shaft member 26 facing the axial direction X1 with respect to the central axis C1 of the shaft member 26. The surface 84A facing the axial direction X1 is, for example, the end face of the shaft member 26. The tool engagement portion 84 can be engaged with a tool T2.

[0106] For example, the tool engagement portion 84 includes at least one recess 86 recessed in the axial direction X1. For example, the recess 86 includes a tool engagement surface 84B facing the axial direction X1. At least a portion of the tool engagement surface 84B is formed perpendicular to the axial direction X1. For example, at least one recess 86 is continuous from the outer surface 26B to the inner surface 26A in the radial direction X2. The recess 86 opens, for example, at least in the radial direction X2. The recess 86 opens, for example, in the axial direction X1.

[0107] As shown in Figure 19, for example, at least one recess 86 includes a first recess 86A and a second recess 86B. For example, the second recess 86B is located on the opposite side of the first recess 86A with respect to the central axis C1 in the circumferential direction X3 with respect to the central axis C1. The second recess 86B is located on the opposite side of the first recess 86A with respect to the central axis C1 in the radial direction X2. The first recess 86A and the second recess 86B are arranged to straddle the central axis C1. In this embodiment, the recess 86 of the tool engagement portion 84 includes a positioning recess 82B in which the positioning member 80 shown in Figure 7 is located. The positioning member 80 is attached to the end cap 28X and is located in the tool engagement portion 84. The second portion 80B of the positioning member 80 is located in the recess 86 of the tool engagement portion 84. The recess 86 of the tool engagement portion 84 may be provided separately from the positioning recess 82B.

[0108] The method for assembling the hub assembly 20 will be described with reference to Figures 4, 5, 9, and 22. The method for assembling the hub assembly 20 includes the first, second, third, fourth, fifth, and sixth steps.

[0109] The first step is to position the power generation unit 40 and the housing regulating member 62X on the shaft member 26. In the first step, after the power generation unit 40 is attached to the second shaft portion 26Y of the shaft member 26, the housing regulating member 62X is attached to the power generation unit 40.

[0110] The second step is to position the housing 62 on the shaft member 26. In the second step, after the housing 62 is positioned on the first shaft portion 26X of the shaft member 26 from the radial direction X2, the housing 62 is attached to the housing regulating member 62X. The lead wire 50B drawn out from the winding 50A is electrically connected to the housing 62. The electrical cable 88 is connected to the connector 70 of the housing 62.

[0111] The third step is to position the hub shell 24 on the shaft member 26. The hub shell 24, on which the magnet 44, back yoke 42C, and additional bearing 30A are attached to the inner surface, is positioned on the shaft member 26.

[0112] The fourth step is the step of attaching the additional end cap 30 to the shaft member 26. In the fourth step, the axial position X1 of the additional bearing 30A, which is positioned on the inner surface of the hub shell 24, is determined. In the fourth step, the rotation of the shaft member 26 is suppressed at least in the circumferential direction X3 by the engagement of the tool T2 with the tool engagement portion 84. The additional end cap 30 is attached to the shaft member 26 while the rotation of the shaft member 26 in the circumferential direction X3 is suppressed. Because the rotation of the shaft member 26 in the circumferential direction X3 can be suppressed by the tool engagement portion 84, it is easy to attach the additional end cap 30 to the shaft member 26.

[0113] The fifth step is the step of attaching the torque transmission structure 36 to the housing 62. In the fifth step, with the splines of the tool T1 engaged with the tool engagement portion 36C, the torque transmission structure 36 is transmitted as the tool T1 rotates in the circumferential direction X3. Hubshell 24 It can be attached.

[0114] The sixth step is the process of attaching the end cap 28X to the shaft member 26. In the sixth step, the electrical cable 88 connected to the connector 70 passes through the hollow portion of the end cap 28X and is pulled out to the outside of the hub shell 24. The end cap 28X is attached to the shaft member 26 while the electrical cable 88 is passing through the hollow portion of the end cap 28X.

[0115] <Method for determining rotation by the control unit 78> The method for determining rotation by the control unit 78 will be explained with reference to Figures 23 and 24. The magnetic sensor 76 is configured to output a detection signal to the control unit 78 when it detects magnetism, and a non-detection signal to the control unit 78 when it does not detect magnetism. The magnetic sensor 76 is configured to output a detection signal to the control unit 78 when the magnetic flux density input to the detection surface 76X is greater than or equal to a predetermined threshold. The magnetic sensor 76 is configured to output a non-detection signal to the control unit 78 when the magnetic flux density input to the detection surface 76X is less than a predetermined threshold. The detection signal and the non-detection signal may be voltage values. One of the detection signal and the non-detection signal may be a high signal, and the other may be a low signal. The low signal may be 0V. The control unit 78 is configured to determine the rotation of the second member 72B relative to the first member 72A in response to changes in the outputs from the first magnetic sensor 76A and the second magnetic sensor 76B.

[0116] When the second member 72B rotates, the timing of detection of the magnetism of the magnet 74 by the first magnetic sensor 76A and the 2 Magnetic sensor 76 B This differs from the timing of magnet detection of magnet 74 by the first magnetic sensor 76A. The difference between the timing of magnet detection of magnet 74 by the first magnetic sensor 76A and the timing of magnet detection of magnet 74 by the second magnetic sensor 76B corresponds to the phase difference between the first magnetic sensor 76A and the second magnetic sensor 76B with respect to the central axis C1. In short, the difference between the timing of magnet detection of magnet 74 by the first magnetic sensor 76A and the timing of magnet detection of magnet 74 by the second magnetic sensor 76B corresponds to the positions of the first magnetic sensor 76A and the second magnetic sensor 76B in the circumferential direction X3. The phase difference between the first magnetic sensor 76A and the second magnetic sensor 76B with respect to the central axis C1 is, for example, smaller than the phase difference between the first magnet 74A and the second magnet 74B with respect to the central axis C1. The phase difference between the first magnet 74A and the second magnet 74B with respect to the central axis C1 is, for example, 180 degrees.

[0117] When the second member 72B rotates, the first magnetic sensor 76A may be configured to output a detection signal for a first predetermined period. When the second member 72B rotates, the second magnetic sensor 76B may be configured to output a detection signal for a second predetermined period. For example, the first predetermined period is substantially equal to the second predetermined period. The phase difference between the first magnetic sensor 76A and the second magnetic sensor 76B with respect to the central axis C1 is set such that, for example, when the first magnetic sensor 76A is outputting a detection signal, the output of the second magnetic sensor 76B changes from a non-detection signal to a detection signal.

[0118] In Figure 23, the change in magnetic flux density input to the detection surface 76X of the first magnetic sensor 76A is shown by a solid line, and the change in magnetic flux density input to the detection surface 76X of the second magnetic sensor 76B is shown by a dashed line.

[0119] Time t11 indicates the time when the magnetic flux density input to the detection surface 76X of the first magnetic sensor 76A becomes greater than or equal to a predetermined threshold due to the rotation of the second member 72B in a predetermined direction. At time t11, the output of the first magnetic sensor 76A changes from a non-detection signal to a detection signal. At time t11, since the magnetic flux density input to the detection surface 76X of the second magnetic sensor 76B is less than a predetermined threshold, the output of the second magnetic sensor 76B is a non-detection signal.

[0120] Time t12 indicates the time when the magnetic flux density input to the detection surface 76X of the second magnetic sensor 76B exceeds a predetermined threshold due to further rotation of the second member 72B in a predetermined direction. At time t12, the output of the second magnetic sensor 76B changes from a non-detection signal to a detection signal. At time t12, since the magnetic flux density input to the detection surface 76X of the first magnetic sensor 76A is maintained above a predetermined threshold, the output of the first magnetic sensor 76A is maintained as a detection signal.

[0121] Time t13 indicates the time when the magnetic flux density input to the detection surface 76X of the first magnetic sensor 76A falls below a predetermined threshold due to further rotation of the second member 72B in a predetermined direction. At time t13, the output of the first magnetic sensor 76A changes from a detection signal to a non-detection signal. At time t13, the magnetic flux density input to the detection surface 76X of the second magnetic sensor 76B is maintained above a predetermined threshold, so the output of the second magnetic sensor 76B remains a detection signal.

[0122] Time t14 indicates the time when the magnetic flux density input to the detection surface 76X of the second magnetic sensor 76B falls below a predetermined threshold due to further rotation of the second member 72B in a predetermined direction. At time t14, the output of the second magnetic sensor 76B changes from a detection signal to a non-detection signal. At time t14, the magnetic flux density input to the detection surface 76X of the first magnetic sensor 76A is maintained below a predetermined threshold, so the output of the first magnetic sensor 76A remains a non-detection signal.

[0123] Figure 23 shows the case where the second member 72B rotates in a predetermined direction relative to the first member 72A. However, when the second member 72B rotates in the opposite direction relative to the first member 72A, the magnetic flux density input to the detection surface 76X of the first magnetic sensor 76A, the magnetic flux density input to the detection surface 76X of the second magnetic sensor 76B, the output of the first magnetic sensor 76A, and the output of the second magnetic sensor 76B change from time t14 to time t11.

[0124] The control unit 78 is configured to determine the rotation of the second member 72B relative to the first member 72A, for example, in response to the output of the first magnetic sensor 76A when the output of the second magnetic sensor 76B changes. The control unit 78 determines that the second member 72B is rotating in a predetermined direction relative to the first member 72A when the changes in the outputs of the first magnetic sensor 76A and the second magnetic sensor 76B follow a first pattern. The control unit 78 determines that the second member 72B is rotating in the opposite direction to the predetermined direction relative to the first member 72A when the changes in the outputs of the first magnetic sensor 76A and the second magnetic sensor 76B follow a second pattern. The control unit 78 is configured not to determine the rotation of the second member 72B relative to the first member 72A when the changes in the outputs of the first magnetic sensor 76A and the second magnetic sensor 76B are different from both the first and second patterns.

[0125] The first pattern is one in which the output of the first magnetic sensor 76A is a detected signal when the output of the second magnetic sensor 76B changes from a non-detection signal to a detected signal, and the output of the first magnetic sensor 76A is a non-detection signal when the output of the second magnetic sensor 76B changes from a detected signal to a non-detection signal. In the first pattern, at time t12, the output of the first magnetic sensor 76A is a detected signal when the output of the second magnetic sensor 76B changes from a non-detection signal to a detected signal. Subsequently, at time t14, the output of the first magnetic sensor 76A is a non-detection signal when the output of the second magnetic sensor 76B changes from a detected signal to a non-detection signal.

[0126] The second pattern is one in which the output of the first magnetic sensor 76A is a non-detection signal when the output of the second magnetic sensor 76B changes from a non-detection signal to a detection signal, and the output of the first magnetic sensor 76A is a detection signal when the output of the second magnetic sensor 76B changes from a detection signal to a non-detection signal. In the second pattern, at time t14, the output of the first magnetic sensor 76A is a non-detection signal when the output of the second magnetic sensor 76B changes from a non-detection signal to a detection signal. Subsequently, at time t12, the output of the first magnetic sensor 76A is a detection signal when the output of the second magnetic sensor 76B changes from a detection signal to a non-detection signal.

[0127] Referring to Figure 24, an example of control by the control unit 78 to determine the rotation direction of the second member 72B relative to the first member 72A will be described. For example, when power is supplied to the control unit 78, the control unit 78 starts the process of step S11. For example, when the process in Figure 24 is completed, the control unit 78 restarts the process of step S11 after a predetermined period of time.

[0128] In step S11, the control unit 78 determines whether the output of the second magnetic sensor 76B has changed from a non-detection signal to a detection signal. If the output of the second magnetic sensor 76B has not changed from a non-detection signal to a detection signal, the control unit 78 terminates the process. If the output of the second magnetic sensor 76B has changed from a non-detection signal to a detection signal, the control unit 78 proceeds to step S12.

[0129] In step S12, the control unit 78 determines whether the output of the first magnetic sensor 76A is a detection signal. If the output of the first magnetic sensor 76A is a detection signal, the control unit 78 proceeds to step S13. If the output of the first magnetic sensor 76A is not a detection signal, the control unit 78 proceeds to step S16.

[0130] In step S13, the control unit 78 determines whether the output of the second magnetic sensor 76B has changed from a detection signal to a non-detection signal. If the output of the second magnetic sensor 76B has not changed from a detection signal to a non-detection signal, the control unit 78 executes the process in step S13 again. If the output of the second magnetic sensor 76B has changed from a detection signal to a non-detection signal, the control unit 78 proceeds to step S14.

[0131] In step S14, the control unit 78 determines whether the output of the first magnetic sensor 76A is a non-detection signal. If the output of the first magnetic sensor 76A is a non-detection signal, the control unit 78 proceeds to step S15. If the output of the first magnetic sensor 76A is not a non-detection signal, the control unit 78 terminates the process. In step S15, the control unit 78 determines that the second member 72B is rotating in a predetermined direction relative to the first member 72A, and then terminates the process. In step S14, if the output of the first magnetic sensor 76A is not a non-detection signal, the control unit 78 does not determine the direction of rotation of the second member 72B relative to the first member 72A.

[0132] In step S16, the control unit 78 determines whether the output of the second magnetic sensor 76B has changed from a detection signal to a non-detection signal. If the output of the second magnetic sensor 76B has not changed from a detection signal to a non-detection signal, the control unit 78 executes the process in step S16 again. If the output of the second magnetic sensor 76B has changed from a detection signal to a non-detection signal, the control unit 78 proceeds to step S17.

[0133] In step S17, the control unit 78 determines whether the output of the first magnetic sensor 76A is a detection signal. If the output of the first magnetic sensor 76A is a detection signal, the control unit 78 proceeds to step S18. If the output of the first magnetic sensor 76A is not a detection signal, the control unit 78 terminates the process. In step S18, the control unit 78 determines that the second member 72B is rotating in the opposite direction to the predetermined direction relative to the first member 72A and terminates the process. In step S17, if the output of the first magnetic sensor 76A is not a detection signal, the control unit 78 does not determine the direction of rotation of the second member 72B relative to the first member 72A.

[0134] <Second Embodiment> Referring to Figure 25, the hub assembly 20 of the second embodiment will be described. The hub assembly 20 of the second embodiment is the same as the hub assembly 20 of the first embodiment except for the configuration of the power generator 42 and the housing 62. Therefore, components common to the first embodiment are denoted by the same reference numerals as in the first embodiment, and redundant explanations are omitted.

[0135] <Power generator 42> The power generator 42 of this embodiment includes a bobbin 46, a winding 50A, a lead wire 50B, an electrical component 58, and a conductor 96. The power generator 42 of this embodiment is the same as the power generator 42 of the first embodiment, except that it includes the electrical component 58 and the conductor 96.

[0136] <Conductor 96> For example, the conductor 96 extends in an axial direction X1 with respect to the central axis C1 of the bobbin 46. The conductor 96 is attached to the first flange 46B of the bobbin 46 and is configured to extend beyond the restricting member 52 from the first flange 46B. The conductor 96 is configured to project in a first axial direction A1. The conductor 96 is attached to the projection 48. The conductor 96 does not have to be attached to at least one of the first projection 48A and the second projection 48B, as long as it can extend beyond the restricting member 52 from the first flange 46B.

[0137] The conductor 96 includes a first portion 96X and a second portion 96Y. The conductor 96 electrically connects the lead wire 50B and the electrical component 58 by electrically connecting the lead wire 50B to the first portion 96X and the electrical component 58 to the second portion 96Y. For example, the first portion 96X is provided on a projection 48 of a first flange 46B. The lead wire 50B is electrically connected to the first portion 96X by being extended to the projection 48.

[0138] The conductor 96 is at least one of the connector pin 96A, the socket 96B, and the busbar. The conductor 96 is more rigid than, for example, the electrical cable 88. At least one of the connector pin 96A, the socket 96B, and the busbar protrudes from the first flange 46B in the first axial direction A1 so as to be parallel to the axial direction X1. In this embodiment, the conductor 96 is the connector pin 96A. The connector pin 96A includes, for example, an exposed electrode. The connector pin 96A is electrically connected to the socket 96B, for example, by the exposed electrode being inserted into the socket 96B.

[0139] <Electrical component 58> The electrical component 58 of this embodiment includes a socket 96B connected to the second portion 96Y. The electrical component 58 of this embodiment is the same as the electrical component 58 of the first embodiment, except that it includes a socket 96B. The socket 96B is connected to the second portion 96Y of the connector pin 96A. The socket 96B is provided on the additional electrical board 58Y such that its receptacle faces the second axial direction A2 and overlaps with the connector pin 96A when viewed from the axial direction X1. The socket 96B is positioned so that the connector pin 96A and the socket 96B can be connected to the power generator 42 located on the shaft member 26 by moving the housing 62 in the second axial direction A2.

[0140] <Housing 62> In this embodiment, the housing 62 is provided with a through hole 62E in the end wall 62C in the axial direction X1. The housing 62 in this embodiment is the same as the housing 62 in the first embodiment, except that the end wall 62C is provided with a through hole 62E. The connector pin 96A passes through the through hole 62E. The connector pin 96A protrudes, for example, from the end wall 62C in the first axial direction A1 through the through hole 62E. The connector pin 96A protrudes, for example, from the through hole 62E with respect to the end wall 62C in the axial direction X1 into the housing 64. A part of the socket 96B may protrude outside the housing 62 through the through hole 62E. If a part of the socket 96B protrudes outside the housing 62, the connector pin 96A does not protrude from the end wall 62C in the first axial direction A1, but connects to the socket 96B on the second axial direction A2 side with respect to the end wall 62C.

[0141] <Example of changes> The descriptions of each embodiment are illustrative of possible forms of a hub assembly according to this disclosure and are not intended to limit its forms. A hub assembly according to this disclosure may take the following forms, for example, variations of each embodiment shown below, and combinations of at least two non-inconsistent variations. In the following variations, parts common to the embodiments are denoted by the same reference numerals as in the embodiments and their descriptions are omitted.

[0142] The restricting member 52 may be attached to the shaft member 26 by a method other than welding. The restricting member 52 may be attached to the shaft member 26 by a different part, such as a screw or nut.

[0143] The lead wire guide section 54 may be provided separately from the bobbin 46. If the lead wire guide section 54 is provided separately from the bobbin 46, it may be attached to the bobbin 46 so that it can be removed from the bobbin 46. If the lead wire guide section 54 is provided separately from the bobbin 46, it may be provided on the lead wire guide arrangement section 56 of the regulating member 52 instead of the bobbin 46.

[0144] The method of attaching the connecting portion 36A to the hub shell 24 can be changed as appropriate, as long as it is attached to the hub shell 24 in a way that prevents rotation. The connecting portion 36A can be attached to the hub shell 24 by, for example, press-fitting or serrated fitting.

[0145] The method of attaching the connecting portion 36A to the second one-way clutch portion 38B may be changed as appropriate, provided that the connecting portion 36A is attached to the second one-way clutch portion 38B in such a way that it cannot rotate relative to the second one-way clutch portion 38B. The connecting portion 36A may be attached to the second one-way clutch portion 38B by, for example, press-fitting or serrated fitting.

[0146] As shown in Figure 26, the first one-way clutch portion 38A may be positioned inward in the radial direction X2 from at least a portion of the second one-way clutch portion 38B. In this modification, the second one-way clutch portion 38B corresponds to the connecting portion 36A. The second one-way clutch portion 38B is coupled to the hub shell 24, for example, by screws. In this modification, the tool engagement portion 36C is provided on the outer surface of the second one-way clutch portion 38B. The second one-way clutch portion 38B in this modification includes a projection 36B. In this modification, the tool engagement portion 36C is provided on the outer surface of the projection 36B of the second one-way clutch portion 38B.

[0147] As shown in Figure 27, the torque transmission structure 36 does not necessarily include a one-way clutch 38. In the example shown in Figure 27, the connecting portion 36A and the sprocket support 32 are integrally formed. In this modified example, the torque transmission structure 36 transmits torque from the sprocket support 32 to the hub shell 24. In this modified example, the torque transmission structure 36 transmits torque from the hub shell 24 to the sprocket support 32.

[0148] The power generation device 42 may have a first member 42A that includes a hub shell 24 and a second member 42B that includes a shaft member 26. When the first member 42A includes a hub shell 24 and the second member 42B includes a shaft member 26, the magnet 44 is attached to the shaft member 26, and the magnetic shielding member 60 extends outward from the outer surface 26B of the shaft member 26 in the radial direction X2.

[0149] The rotating device 72 may have a first member 72A which includes at least one of a hub shell 24 and a sprocket support 32, and a second member 72B which is a shaft member 26. A magnetic sensor 76 provided on at least one of the hub shell 24 and the sprocket support 32 detects a magnet 74 provided on the shaft member 26.

[0150] The magnetic shielding member 60 does not have to be arranged around the entire circumference in the circumferential direction X3. For example, when viewed from the axial direction X1, it is sufficient that at least a portion of the magnetic shielding member 60 is located between the magnet 44 and the electrical component 58. If at least a portion of the magnetic shielding member 60 is located between the magnet 44 and the electrical component 58 when viewed from the axial direction X1, the magnetic shielding member 60 may be attached to the electrical component 58. If the magnetic shielding member 60 is attached to the electrical component 58, for example, the magnetic shielding member 60 is provided on the portion of the electrical component 58 that requires magnetic shielding.

[0151] The magnetic shielding member 60 may be positioned between the magnet 44 and the electrical component 58 in the axial direction X1, but may be arranged so as not to come into contact with the magnet 44.

[0152] The magnetic shielding member 60 may be formed separately from the back yoke 42C, as long as the magnetic shielding member 60 can be magnetically connected to the back yoke 42C. If the magnetic shielding member 60 is formed separately from the back yoke 42C, the magnetic shielding member 60 does not need to be in contact with the back yoke 42C.

[0153] The recess 86 of the tool engagement portion 84 at the end 26C of the shaft member 26 does not need to be continuous from the outer surface 26B to the inner surface 26A in the radial direction X2, as long as the tool T2 can be engaged. For example, the recess 86 of the tool engagement portion 84 is continuous from the outer surface 26B to a position between the outer surface 26B and the inner surface 26A in the radial direction X2. For example, the recess 86 of the tool engagement portion 84 is continuous from the inner surface 26A to a position between the outer surface 26B and the inner surface 26A in the radial direction X2.

[0154] The positioning member 80 may be formed integrally with either the end cap 28 or the shaft member 26. If the positioning member 80 is formed integrally with either the end cap 28 or the shaft member 26, for example, the positioning member 80 may be formed as a protrusion provided on either the end cap 28 or the shaft member 26. If the positioning member 80 is formed as a protrusion provided on either the end cap 28 or the shaft member 26, the other end cap 28 or shaft member 26 may include a recess that fits into the protrusion.

[0155] The opening dimension D4 of the opening 68 may be less than or equal to the dimension D1 of the first shaft portion 26X in the radial direction X2, as long as the shaft member 26 can pass through so that it is received by the shaft member receiving portion 66. If the opening dimension D4 of the opening 68 is less than or equal to the dimension D1 of the first shaft portion 26X, for example, the housing 62 may be deformable to flex.

[0156] The cross-sectional shape of the shaft member 26 in the direction perpendicular to the central axis C1 may be non-circular. If the cross-sectional shape of the shaft member 26 in the direction perpendicular to the central axis C1 is non-circular, the opening dimension D4 of the opening 68 may be less than or equal to the maximum dimension of the shaft member 26. A non-circular cross-sectional shape is, for example, a shape that has a straight line in part. An example of a shape that has a straight line in part is a D shape. If the cross-sectional shape of the shaft member 26 in the direction perpendicular to the central axis C1 is a D shape, the first dimension in the direction perpendicular to the straight portion of the D shape is different from the second dimension in the direction parallel to the straight portion of the D shape. For example, if the second dimension is the maximum dimension of the shaft member 26, the opening dimension D4 of the opening 68 may be larger than the first dimension and less than or equal to the second dimension.

[0157] In the second embodiment, the conductor 96 may be, in place of or in addition to, a connector pin 96A, at least one of a socket 96B and a busbar. If the conductor 96 is a socket 96B, the electrical component 58 includes a connector pin 96A connected to a second portion 96Y of the socket 96B. If the conductor 96 is a busbar, the electrical component 58 includes a connector 70 connected to a second portion 96Y of the busbar.

[0158] As shown in Figure 28, the lead wire 50B may be electrically connected to the first section 96X by winding the lead wire 50B around the first section 96X.

[0159] The power generation device 42 comprises a bobbin 46, a winding 50A wound around the bobbin 46, a lead wire 50B electrically connected to the winding 50A, a restricting member 52 adjacent to the first bobbin end 46X of the bobbin 46 in the axial direction X1 with respect to the central axis C1 of the bobbin 46 and restricting the movement of the bobbin 46 in the axial direction X1, and at least a portion of the lead wire 50B is arranged on at least one lead wire guide portion 54 extending in the axial direction X1, and other components may be omitted as long as the restricting member 52 is provided with a lead wire guide arrangement portion 56 on which at least a portion of the at least one lead wire guide portion 54 is arranged.

[0160] The power generator 42 comprises a bobbin 46, a winding 50A wound around the bobbin 46, a lead wire 50B electrically connected to the winding 50A, and at least one lead wire guide portion 54 on which at least a portion of the lead wire 50B is arranged and which extends in an axial direction X1 with respect to the central axis C1 of the bobbin 46, wherein the bobbin 46 comprises a winding arrangement portion 46A on which the winding 50A is arranged, and a first lead wire guide portion extending radially outward with respect to the central axis C1 of the bobbin 46 from the end of the winding arrangement portion 46A in the axial direction X1 The flange 46B includes a first axial direction A1 extending from the winding arrangement section 46A toward the first flange 46B, the first flange 46B includes a plurality of protrusions 48 projecting toward the first axial direction A1, the plurality of protrusions 48 include a first protrusion 48A and a second protrusion 48B whose projection toward the first axial direction A1 is greater than that of the first protrusion 48A, and other configurations may be omitted as long as at least one lead wire guide section 54 is provided on the second protrusion 48B.

[0161] The power generator 42 comprises a bobbin 46, a winding 50A wound on the bobbin 46, a lead wire 50B electrically connected to the winding 50A, an electrical component 58, and a conductor 96, wherein the conductor 96 is at least one of a connector pin 96A, a socket 96B, and a busbar, and includes a first part 96X and a second part 96Y, and the lead wire 50B and the electrical component 58 are electrically connected by the lead wire 50B being electrically connected to the first part 96X and the electrical component 58 being electrically connected to the second part 96Y, but other components may be omitted.

[0162] The hub assembly 20 comprises an axle member 26 having a central axis C1, a hub shell 24 rotatably positioned around the central axis C1, a sprocket support 32 rotatably positioned around the central axis C1 and to which at least one sprocket 12 is attached, a torque transmission structure 36 that transmits torque from one of the sprocket support 32 and the hub shell 24 to the other, and a tool engagement portion 36C provided on the torque transmission structure 36 and configured to allow engagement of a tool T1 from outside the hub shell 24, wherein the tool engagement portion 36C is located radially outward from the sprocket support 32 in the radial direction X2 with respect to the central axis C1, and other components may be omitted.

[0163] The hub assembly 20 comprises an axle member 26 having a central axis C1, a hub shell 24 rotatably positioned around the central axis C1, a sprocket support 32 rotatably positioned around the central axis C1 and to which at least one sprocket 12 is attached, a torque transmission structure 36 that transmits torque from one of the sprocket support 32 and the hub shell 24 to the other of the sprocket support 32 and the hub shell 24, and a tool engagement portion 36C provided on the torque transmission structure 36 and configured to allow engagement of a tool T1 from outside the hub shell 24, wherein the sprocket support 32 has a sprocket engagement portion 32A that engages with the sprocket 12, and the tool engagement portion 36C is located on the hub shell 24 side of the sprocket engagement portion 32A in the axial direction X1 with respect to the central axis C1, but other configurations may be omitted.

[0164] The power generation device 42 includes a first member 42A having a central axis C1, a second member 42B that is rotatable relative to the first member 42A about the central axis C1, a magnet 44 attached to the second member 42B, an electrical component 58 positioned differently from the magnet 44 in the axial direction X1 with respect to the central axis C1, and a magnetic shielding member 60 that, when viewed from the axial direction X1, at least a portion of which overlaps with the magnet 44, is located between the magnet 44 and the electrical component 58 in the axial direction X1, and extends in the radial direction X2 with respect to the central axis C1. Other components may be omitted.

[0165] The hub assembly 20 includes a hub shaft 22 which includes a shaft member 26 that rotatably supports the hub shell 24, and the shaft member 26 may be omitted if a tool engagement portion 84 is provided on the surface 84A of the end portion 26C of the shaft member 26 facing the axial direction X1 with respect to the central axis C1 of the shaft member 26, into which a tool T2 can engage.

[0166] The hub assembly 20 comprises a hub shaft 22 including a shaft member 26, an end cap 28, and a positioning member 80 having a first portion 80A and a second portion 80B different from the first portion 80A, wherein the shaft member 26 includes an end portion 26C to which the end cap 28 is attached in the axial direction X1 with respect to the central axis C1 of the shaft member 26, and the positioning member 80 is configured to determine the position of the end cap 28 relative to the shaft member 26 in the circumferential direction X3 with respect to the central axis C1, and the end cap 28 has a first positioning portion 28A to which the first portion 80A is placed, and the end portion 26C has a second positioning portion 26D to which the second portion 80B is placed, although other components may be omitted.

[0167] The rotating device 72 comprises a first member 72A having a central axis C1, a second member 72B that rotates relative to the first member 72A about the central axis C1, a magnet 74 provided on the second member 72B, a magnetic sensor 76 configured not to rotate relative to the first member 72A and to detect the magnetism of the magnet 74, and a magnetic generating component 72X configured not to rotate relative to the first member 72A and different from the magnet 74. The magnetic sensor 76 includes a first magnetic sensor 76A and a second magnetic sensor 76B that detects the magnetism of the magnet 74 independently of the first magnetic sensor 76A. The first magnetic sensor 76A is positioned on the opposite side of the second magnetic sensor 76B with respect to a reference plane P1 that includes the central axis C1 and passes through the magnetic generating component 72X, but other components may be omitted.

[0168] The rotating device 72 comprises a first member 72A having a central axis C1, a second member 72B that rotates relative to the first member 72A about the central axis C1, at least one magnet 74 provided on the second member 72B, and at least one magnetic sensor 76 configured not to rotate relative to the first member 72A and for detecting the magnetism of the magnet 74. The other components may be omitted as long as at least one magnet 74 is positioned differently from the at least one magnetic sensor 76 in the axial direction X1 with respect to the central axis C1, and at least one magnet 74 is positioned differently from the at least one magnetic sensor 76 in the radial direction X2 with respect to the central axis C1.

[0169] The rotating device 72 comprises a first member 72A having a central axis C1, a second member 72B that rotates relative to the first member 72A about the central axis C1, at least one magnet 74 provided on the second member 72B, and at least one magnetic sensor 76 configured to be unable to rotate relative to the first member 72A and having a detection surface 76X for detecting the magnetism of the magnet 74. The other components may be omitted as long as the at least one magnet 74 is positioned at a different location from the at least one magnetic sensor 76 in the axial direction X1 with respect to the central axis C1, and the detection surface 76X is positioned not perpendicular to the magnetization direction M1 in which the S pole and N pole of the at least one magnet 74 are aligned.

[0170] The hub assembly 20 rotatably supports a hub shell 24 and comprises a hub shaft 22 having a central axis C1 and an electrical cable 88, wherein the hub shaft 22 includes a first frame contact end face 22B, a second frame contact end face 22C opposite to the first frame contact end face 22B in an axial direction X1 with respect to the central axis C1, and at least one cable guide portion 90 provided between the first frame contact end face 22B and the second frame contact end face 22C in an axial direction X1 and configured to guide the electrical cable 88, wherein at least one cable guide portion 90 penetrates the hub shaft 22 at least partially in the axial direction X1 and in the radial direction X2 with respect to the central axis C1, and other configurations may be omitted.

[0171] The hub assembly 20 rotatably supports the hub shell 24 and comprises a hub shaft 22 having a central axis C1 and including a shaft member 26 and at least one end cap 28 attached to the end 26C of the shaft member 26 in an axial direction X1 with respect to the central axis C1, and an electrical cable 88, wherein the hub shaft 22 includes a first frame contact end face 22B, a second frame contact end face 22C opposite to the first frame contact end face 22B in an axial direction X1, and at least one cable guide portion provided between the first frame contact end face 22B and the second frame contact end face 22C in an axial direction X1 and configured to guide the electrical cable 88, and at least one cable guide portion 90 is provided at least partially on at least one end cap 28, other configurations may be omitted.

[0172] The hub assembly 20 rotatably supports the hub shell 24 and comprises a hub shaft 22 having a central axis C1, an electrical cable 88, and an auxiliary member 92 configured to guide at least a portion of the exposed portion 88B of the electrical cable 88 that is exposed to the outside of the hub shell 24 in the radial direction X2 with respect to the central axis C1, wherein the hub shaft 22 includes a first frame contact end face 22B, a second frame contact end face 22C opposite to the first frame contact end face 22B in the axial direction X1 with respect to the central axis C1, and at least one cable guide portion 90 provided between the first frame contact end face 22B and the second frame contact end face 22C in the axial direction X1 and configured to guide the electrical cable 88, and the auxiliary member 92 is located between the first frame contact end face 22B and the second frame contact end face 22C, although other configurations may be omitted.

[0173] The hub assembly 20 comprises a shaft member 26 having a central axis C1, an electrical component 58, and a housing 62 that houses at least a portion of the electrical component 58, wherein the housing 62 includes a shaft member receiving portion 66 for receiving the shaft member 26, and an opening 68 connected to the shaft member receiving portion 66 in the radial direction X2 with respect to the central axis C1; other components may be omitted.

[0174] As used herein, the expression "at least one" means "one or more" of the desired options. For example, as used herein, "at least one" means "only one option" or "both of the two options" if there are two options. As another example, as used herein, "at least one" means "only one option" or "a combination of two or more any options" if there are three or more options. [Explanation of Symbols]

[0175] 10...Human-powered vehicle, 12...Sprocket, 20...Hub assembly, 24...Hub shell, 24A...First female thread section, 26...Shaft member, 32...Sprocket support, 32A...Sprocket engagement section, 36...Torque transmission structure, 36A...Connecting section, 36B...Protruding section, 36C...Tool engagement section, 36X...First male thread section, 36Y...Second female thread section, 36Z...Spline, 38...One-way clutch, 38A...First one-way clutch section, 38B...Second one-way clutch section, 38X...Second male thread section, 58...Electrical component.

Claims

1. A hub assembly for a human-powered vehicle, A shaft member having a central axis, A hub shell rotatably arranged around the aforementioned central axis, A sprocket support, which is rotatably positioned around the aforementioned central axis and to which at least one sprocket is attached, A torque transmission structure that transmits torque from one of the sprocket support and the hub shell to the other of the sprocket support and the hub shell, The torque transmission structure includes a tool engagement portion provided therein, which is configured to allow a tool to be engaged from outside the hub shell, The tool engagement portion is located radially outward from the sprocket support in the radial direction with respect to the central axis of the hub assembly.

2. A hub assembly for a human-powered vehicle, A shaft member having a central axis, A hub shell rotatably arranged around the aforementioned central axis, A sprocket support, which is rotatably positioned around the aforementioned central axis and to which at least one sprocket is attached, A torque transmission structure that transmits torque from one of the sprocket support and the hub shell to the other of the sprocket support and the hub shell, The torque transmission structure includes a tool engagement portion provided therein, which is configured to allow a tool to be engaged from outside the hub shell, The sprocket support has a sprocket engagement portion that engages with the sprocket, The tool engagement portion is located on the hub shell side of the sprocket engagement portion in the axial direction with respect to the central axis, in a hub assembly.

3. The torque transmission structure includes a one-way clutch, The hub assembly according to claim 1 or 2, wherein the one-way clutch includes a first one-way clutch portion that rotates integrally with the sprocket support and a second one-way clutch portion that rotates integrally with the hub shell.

4. The hub assembly according to claim 3, wherein the first one-way clutch portion is positioned outward in the radial direction with respect to the central axis, more than at least a portion of the second one-way clutch portion.

5. The torque transmission structure includes a connecting portion that connects the second one-way clutch portion and the hub shell so that the second one-way clutch portion and the hub shell rotate together as a single unit. The hub assembly according to claim 3, wherein the tool engagement portion is provided on the connecting portion.

6. A hub assembly for a human-powered vehicle, A shaft member having a central axis, A hub shell rotatably arranged around the aforementioned central axis, A sprocket support, which is rotatably positioned around the aforementioned central axis and to which at least one sprocket is attached, A one-way clutch including a first one-way clutch portion that rotates integrally with the sprocket support, and a second one-way clutch portion that rotates integrally with the hub shell, The device includes a connecting portion that connects the second one-way clutch portion and the hub shell so that the second one-way clutch portion and the hub shell rotate together, The one-way clutch is included in a torque transmission structure that transmits torque from the sprocket support to the hub shell. The connection portion includes a tool engagement portion that allows a tool to be engaged from outside the hub shell, and is part of a hub assembly.

7. The hub shell is provided with a first female threaded portion, The hub assembly according to claim 5, wherein the connecting portion is provided with a first male threaded portion that screws into the first female threaded portion.

8. The hub assembly according to claim 5, wherein the connecting portion is formed separately from the second one-way clutch portion and is attached to the second one-way clutch portion in such a way that it cannot rotate relative to the second one-way clutch portion.

9. The aforementioned connection portion is provided with a second female threaded portion. The hub assembly according to claim 8, wherein the second one-way clutch portion is provided with a second male thread portion that screws into the second female thread portion.

10. The connecting portion includes a protrusion that protrudes to the outside of the hub shell in the axial direction with respect to the central axis, The hub assembly according to claim 5, wherein the tool engagement portion is provided on the outer surface formed radially outward with respect to the central axis of the protrusion.

11. The torque transmission structure includes a protrusion that protrudes to the outside of the hub shell in the axial direction with respect to the central axis, The hub assembly according to any one of claims 1, 2, and 6, wherein the tool engagement portion is provided on the outer surface formed radially outward with respect to the central axis of the protrusion.

12. The hub assembly according to claim 11, wherein the protrusion extends outward in the radial direction with respect to the central axis.

13. The hub assembly according to any one of claims 1, 2, and 6, wherein the tool engagement portion is configured to engage with a tool for attaching the torque transmission structure to the hub shell when the hub shell is positioned on the shaft member.

14. The hub assembly according to any one of claims 1, 2, and 6, wherein a spline is formed on the tool engagement portion.

15. Equipped with additional electrical components, The hub assembly according to any one of claims 1, 2, and 6, wherein the electrical components are provided in the internal space of the hub shell.

Images