Generator of a human-powered vehicle, stator of the generator, and method for manufacturing the stator

Abstract

The present invention provides a generator for a human-powered vehicle, a stator of the generator, and a method for manufacturing the stator. The problem of the present invention is to improve the assemblability of a plurality of yoke plates in the stator of the generator. The stator of the generator for a human-powered vehicle includes a coil, a plurality of yoke plates, and a connecting member. The coil is wound around an axis. The plurality of yoke plates are arranged and disposed in the circumferential direction of the axis. The connecting member is configured as a member independent of the plurality of yoke plates. The plurality of yoke plates are respectively fixed to the connecting member.

Description

Technical Field

[0001] The present disclosure relates to a generator for a human-powered vehicle, a stator of the generator, and a method for manufacturing the stator. Background Art

[0002] The generator described in Patent Document 1 includes a magnet, a coil, a yoke, and a support. The yoke includes a plurality of yoke pieces. The plurality of yoke pieces are each formed of a separate component and are arranged circumferentially. The coil and the plurality of yoke pieces are mounted on the support.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2016-158421 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] Since the plurality of yoke pieces are each separate components, it is difficult to adjust the positions of the plurality of yoke pieces when mounting the plurality of yoke pieces on the support. If it is difficult to adjust the positions of the plurality of yoke pieces, the positional accuracy between the plurality of yoke pieces will be reduced.

[0008] One of the problems of the present disclosure is to improve the assemblability of a plurality of yoke pieces in the stator of the generator.

[0009] Solutions for Solving the Problems

[0010] The stator of the generator of the first aspect of the human-powered vehicle includes a coil, a plurality of yoke pieces, and a connecting member. The coil is wound around an axis. The plurality of yoke pieces are arranged circumferentially around the axis. The connecting member is configured as a component independent of the plurality of yoke pieces. The plurality of yoke pieces are each fixed to the connecting member.

[0011] In the stator of the first aspect, since the plurality of yoke pieces are each fixed to the connecting member, the plurality of yoke pieces and the connecting member can be treated as an integral unit. Thus, compared with the case where the plurality of yoke pieces are not connected by the connecting member, the assemblability when assembling the plurality of yoke pieces to a support such as a hub shaft can be improved.

[0012] According to the stator of the first aspect, in the stator of the second aspect, the plurality of yoke pieces are each fixed to the connecting member by at least one of welding, bonding, and fitting.

[0013] In the stator of the second aspect, the plurality of yoke pieces can be each fixed to the connecting member by a relatively simple method.

[0014] According to the stator of the first or second aspect, in the stator of the third aspect, the connecting member extends circumferentially.

[0015] In the stator of the third aspect, it is easy to fix the plurality of yoke pieces arranged circumferentially to the connecting member respectively.

[0016] In the stator according to any one of the first to third aspects, in the stator of the fourth aspect, the connecting member is annular.

[0017] In the stator of the fourth aspect, since the connecting member is annular, the strength of the connecting member can be improved, and thus the connecting strength of the plurality of yoke pieces can be improved.

[0018] In the stator according to any one of the first to fourth aspects, in the stator of the fifth aspect, the connecting member is arranged at least partially between the plurality of yoke pieces and the axis in the radial direction of the axis.

[0019] In the stator of the fifth aspect, it is easy to support the plurality of yoke pieces in the radial direction by the connecting member.

[0020] In the stator according to any one of the first to fifth aspects, in the stator of the sixth aspect, the connecting member includes a cylindrical portion extending along the axis.

[0021] In the stator of the sixth aspect, since the connecting member includes a cylindrical portion, the strength of the connecting member can be improved, and thus the connecting strength of the plurality of yoke pieces can be improved.

[0022] In the stator according to the sixth aspect, in the stator of the seventh aspect, the plurality of yoke pieces are fixed to the cylindrical portion respectively by at least one of welding, bonding, and fitting.

[0023] In the stator of the seventh aspect, the connecting strength of the plurality of yoke pieces can be further improved.

[0024] In the stator according to the sixth or seventh aspect, in the stator of the eighth aspect, the connecting member includes a flange extending outward from the cylindrical portion in the radial direction of the axis.

[0025] In the stator of the eighth aspect, the strength of the connecting member can be more precisely improved.

[0026] In the stator according to the eighth aspect, in the stator of the ninth aspect, the plurality of yoke pieces are fixed to the flange respectively by at least one of welding, bonding, and fitting.

[0027] In the stator of the ninth aspect, the connecting strength of the plurality of yoke pieces can be more precisely improved.

[0028] In the stator according to any one of the first to ninth aspects, in the stator of the tenth aspect, the plurality of yoke pieces each include a yoke main body and a fixing portion. The yoke main body is arranged to face the coil in the radial direction of the axis. The fixing portion extends from the yoke main body toward the axis in the radial direction and is fixed to the connecting member.

[0029] In the stator according to the tenth aspect, the connection strength of a plurality of yoke plates can be more precisely improved.

[0030] According to the stator of the tenth aspect, the stator of the eleventh aspect further includes a bobbin, which is configured as a component independent of the plurality of yoke plates and the connecting components. A coil is wound around the bobbin. The bobbin includes a support hole extending along the axis. The fixing portion is at least partially disposed within the support hole.

[0031] In the stator of the eleventh aspect, the connection strength between the plurality of yoke plates and the coil can be improved.

[0032] According to the stator of any one of the first to twelfth aspects, the stator of the twelfth aspect further includes a hub shaft for supporting the coil and the plurality of yoke plates. The connecting component is at least partially disposed between the plurality of yoke plates and the hub shaft in the radial direction of the axis.

[0033] In the stator of the twelfth aspect, the connection strength of the plurality of yoke plates can be more precisely improved.

[0034] The generator of the human-powered vehicle according to the thirteenth aspect includes: the stator of any one of the first to twelfth aspects; a rotating body, which is arranged to be rotatable relative to the stator about the axis; and a rotor, which is arranged on the rotating body and includes a magnet.

[0035] In the stator of the thirteenth aspect, the assemblability of the generator can be improved by the stator.

[0036] The method for manufacturing a stator according to the fourteenth aspect includes: a yoke arranging step of mounting a plurality of yoke plates, which are separate components, on a jig in a manner of being arranged around a reference axis; a connecting component arranging step of mounting a connecting component on the jig; and a fixing step of fixing each of the plurality of yoke plates to the connecting component.

[0037] In the method for manufacturing a stator according to the fourteenth aspect, since each of the plurality of yoke plates is fixed to the connecting component, the plurality of yoke plates and the connecting component can be treated as an integral unit. Thus, compared with the case where the plurality of yoke plates are not connected by the connecting component, the assemblability when assembling the plurality of yoke plates on a support such as a hub shaft can be improved.

[0038] According to the manufacturing method of the fourteenth aspect, the manufacturing method of the fifteenth aspect further includes a mounting step of mounting the plurality of yoke plates connected by the connecting component on a hub shaft.

[0039] In the method for manufacturing a stator according to the fifteenth aspect, the assemblability when assembling the plurality of yoke plates on a hub shaft can be improved.

[0040] The stator of the generator of the human-powered vehicle according to the sixteenth aspect is manufactured by the manufacturing method of the fourteenth or fifteenth aspect.

[0041] In the stator of the sixteenth aspect, since it is manufactured by the manufacturing method of the fourteenth or fifteenth aspect, the assemblability when assembling a plurality of yoke plates to a support body such as a hub shaft can be improved.

[0042] Advantages of the Invention

[0043] According to the present disclosure, the assemblability of a plurality of yoke plates in the stator of a generator can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a cross-sectional view of a human-powered vehicle including the generator according to the first embodiment.

[0045] Figure 2 is Figure 1 a perspective view of the generator stator shown.

[0046] Figure 3 is Figure 1 an exploded perspective view of the generator stator shown.

[0047] Figure 4 is Figure 3 a side view of the yoke assembly of the stator shown.

[0048] Figure 5 is Figure 4 a side view of the other side of the yoke assembly shown.

[0049] Figure 6 is Figure 3 a side view of another yoke assembly of the stator shown.

[0050] Figure 7 is Figure 6 a side view of the other side of the yoke assembly shown.

[0051] Figure 8 is Figure 4 a perspective view of the connecting member of the yoke assembly shown.

[0052] Figure 9 is Figure 8 a top view of the connecting member shown.

[0053] Figure 10 is Figure 6 a perspective view of the connecting member of the yoke assembly shown.

[0054] Figure 11 is Figure 10 a top view of the connecting member shown.

[0055] Figure 12 is Figure 1Cross-sectional view of the generator shown.

[0056] Figure 13 is Figure 1 Another cross-sectional view of the generator shown.

[0057] Figure 14 is Figure 12 Cross-sectional view of the generator along line XIV-XIV.

[0058] Figure 15 is Figure 12 Cross-sectional view of the generator along line XV-XV.

[0059] Figure 16 is a flowchart showing Figure 2 the manufacturing method of the stator shown.

[0060] Figure 17 is a top view for explaining Figure 2 the manufacturing method of the stator shown.

[0061] Figure 18 is Figure 17 and Figure 22 Cross-sectional view of the fixture along line XVIII-XVIII.

[0062] Figure 19 is Figure 20 Cross-sectional view of the fixture along line XIX-XIX.

[0063] Figure 20 is a top view for explaining Figure 2 the manufacturing method of the stator shown.

[0064] Figure 21 is a top view for explaining Figure 2 the manufacturing method of the stator shown.

[0065] Figure 22 is a top view for explaining Figure 2 the manufacturing method of the stator shown.

[0066] Figure 23 is a top view for explaining Figure 2 the manufacturing method of the stator shown.

[0067] Figure 24 is a top view for explaining Figure 2 the manufacturing method of the stator shown.

[0068] Figure 25 Cross-sectional view of a human-powered vehicle including the generator according to the second embodiment.

[0069] Figure 26 is Figure 25 Isometric view of the generator stator shown.

[0070] Figure 27 is Figure 25 exploded perspective view of the generator stator shown in the figure.

[0071] Figure 28 is Figure 27 side view of the yoke assembly of the stator shown in the figure.

[0072] Figure 29 is Figure 28 side view of the other side of the yoke assembly shown in the figure.

[0073] Figure 30 is Figure 27 side view of another yoke assembly of the stator shown in the figure.

[0074] Figure 31 is Figure 30 side view of the other side of the yoke assembly shown in the figure.

[0075] Figure 32 is Figure 27 exploded perspective view of the connecting component of the yoke assembly shown in the figure.

[0076] Figure 33 is Figure 27 cross-sectional view of the stator shown in the figure.

[0077] Figure 34 is Figure 27 another cross-sectional view of the stator shown in the figure.

[0078] Figure 35 is Figure 33 cross-sectional view of the stator along line XXXV-XXXV.

[0079] Figure 36 is Figure 33 cross-sectional view of the generator along line XXXVI-XXXVI.

[0080] Figure 37 is a cross-sectional view of a human-powered vehicle including the generator according to the third embodiment.

[0081] Figure 38 is Figure 37 perspective view of the generator stator shown in the figure.

[0082] Figure 39 is Figure 37 exploded perspective view of the generator stator shown in the figure.

[0083] Figure 40 is Figure 39 side view of the yoke assembly of the stator shown in the figure.

[0084] Figure 41 isFigure 40 Another side view of the yoke assembly shown

[0085] Figure 42 is Figure 39 Side view of another yoke assembly of the stator shown

[0086] Figure 43 is Figure 42 Another side view of the yoke assembly shown

[0087] Figure 44 is Figure 39 Stereogram of the connecting component of the yoke assembly shown

[0088] Figure 45 is Figure 39 Cross-sectional view of the stator shown

[0089] Figure 46 is Figure 39 Another cross-sectional view of the stator shown

[0090] Figure 47 represents Figure 39 Flowchart of the stator manufacturing method shown

[0091] Figure 48 is for explaining Figure 39 Top view of the stator manufacturing method shown

[0092] Figure 49 is Figure 48 Cross-sectional view of the fixture of line XLIX-XLIX

[0093] Figure 50 Cross-sectional view of the generator related to the modification

[0094] Figure 51 Cross-sectional view of the generator related to the modification

[0095] Figure 52 Cross-sectional view of the generator related to the modification

[0096] Figure 53 Cross-sectional view of the generator related to the modification

[0097] Figure 54 Cross-sectional view of the generator related to the modification Detailed implementation manners

[0098] Hereinafter, the implementation manners will be described with reference to the accompanying drawings. The same reference numerals in the figures denote corresponding or identical structures

[0099] (First implementation manner)

[0100] As Figure 1As shown, the human-powered vehicle 2 includes the generator 10 involved in the first embodiment. The human-powered vehicle 2 includes a frame 4 and wheels 6. The generator 10 is mounted on the frame 4. The wheel 6 includes the generator 10, a plurality of spokes 6A, and a rim (not shown). The generator 10 is connected to the rim via the plurality of spokes 6A. In the present embodiment, the generator 10 may also be referred to as a hub generator 10. However, the generator 10 is not limited to a hub generator.

[0101] Among them, the human-powered vehicle includes various bicycles, such as mountain bikes, road bikes, city bikes, cargo bikes, hand-cranked bikes, and recumbent bikes, etc. In addition, the human-powered vehicle also includes electric bicycles (E-bikes). The electric bicycle includes an electric-assisted bicycle that uses an electric motor to assist in propelling the vehicle. However, the number of wheels of the human-powered vehicle is not limited to two. The human-powered vehicle also includes, for example, vehicles with one wheel and more than three wheels. Vehicles that use only power sources other than human power do not belong to the human-powered vehicle. In particular, vehicles that use only an internal combustion engine as the power source do not belong to the human-powered vehicle. Generally, the human-powered vehicle is assumed to be a small and light vehicle that can be driven on public roads without a license.

[0102] In this application, the following terms indicating directions, "front", "rear", "front side", "rear side", "left", "right", "sideways", "above", and "below" and any other similar direction terms refer to the directions defined based on the user's reference position (such as on the saddle or seat) of the human-powered vehicle 2 facing the user (i.e., the rider) of the steering device such as the handlebars. Therefore, these terms used to describe the generator 10 can be understood as indicating the upright riding position on the horizontal plane in the human-powered vehicle 2 including the generator 10.

[0103] As Figure 1 shown, the generator 10 of the human-powered vehicle 2 includes a stator 12 and a rotating body 14. The rotating body 14 is arranged to be rotatable relative to the stator 12 about the axis A1. The generator 10 is configured to generate electricity using the relative rotation of the stator 12 and the rotating body 14. The stator 12 is configured to be mounted on the frame 4. The rotating body 14 is configured to be connected to the rim via the plurality of spokes 6A.

[0104] The generator 10 of the human-powered vehicle 2 includes a rotor 16. The rotor 16 is provided on the rotating body 14 and includes a magnet 18. The rotor 16 is arranged to be rotatable relative to the stator 12 about the axis A1. The axis A1 may also be referred to as the rotation axis A1. The rotor 16 is fixed to the inner peripheral surface 14A of the rotating body 14. The rotating body 14 and the rotor 16 are arranged to be rotatable relative to the stator 12 about the axis A1. The rotor 16 is, for example, cylindrical. At least a part of the stator 12 is disposed on the inner peripheral side of the rotor 16.

[0105] The generator 10 further includes a sprocket support 19, a first bearing 20, a second bearing 22, a third bearing 24, a fourth bearing 26, and a one-way clutch mechanism 28. The sprocket support 19 is rotatable about the axis A1 relative to the stator 12 and the rotating body 14. The sprocket support 19 includes a plurality of outer spline teeth 19A engaged with the sprocket assembly 8. The first bearing 20 and the second bearing 22 are configured to be disposed between the rotating body 14 and the stator 12 and support the rotating body 14 so as to be rotatable about the axis A1 relative to the stator 12. The third bearing 24 and the fourth bearing 26 are configured to be disposed between the sprocket support 19 and the stator 12 and support the sprocket support 19 so as to be rotatable about the axis A1 relative to the stator 12.

[0106] The one-way clutch mechanism 28 is configured to restrict the rotation of the sprocket support 19 relative to the rotating body 14 in one direction. Specifically, the one-way clutch mechanism 28 is configured to transmit the rotational force from the sprocket support 19 to the rotating body 14 during the pedaling process. The one-way clutch mechanism 28 is configured to restrict the transmission of the rotational force from the rotating body 14 to the sprocket support 19 during the coasting process.

[0107] The stator 12 of the generator 10 of the human-powered vehicle 2 includes a coil 30. The coil 30 is wound around the axis A1. The coil 30 is made of a conductor such as a copper wire, for example. The stator 12 further includes a bobbin 32. The coil 30 is wound around the bobbin 32. The bobbin 32 is made of an electrically insulating material such as plastic, for example. The coil 30 is disposed on the inner peripheral side of the magnet 18. The magnet 18 is configured to generate a magnetic field. If the rotor 16 rotates relative to the coil 30, an induced current flows through the coil 30. Therefore, the rotation of the rotating body 14 relative to the stator 12 can be converted into electric power by the coil 30 and the rotor 16.

[0108] The stator 12 further includes a hub axle 34. The hub axle 34 extends along the axial direction D1 of the axis A1. The bobbin 32 includes a support hole 32A extending along the axis A1. The hub axle 34 passes through the support hole 32A. The first bearing 20 and the second bearing 22 are configured to be disposed between the rotating body 14 and the hub axle 34 and support the rotating body 14 so as to be rotatable about the axis A1 relative to the hub axle 34. The third bearing 24 and the fourth bearing 26 are configured to be disposed between the sprocket support 19 and the hub axle 34 and support the sprocket support 19 so as to be rotatable about the axis A1 relative to the hub axle 34. The hub axle 34 includes a through hole 34H extending along the axis A1. For example, a rod of the wheel fixing mechanism is inserted into the through hole 34H, and the wheel fixing mechanism is configured to detachably fix the wheel 6 to the vehicle frame 4.

[0109] The generator 10 includes a first fixed member 36 and a second fixed member 38. The hub shaft 34 includes a first shaft end 34A and a second shaft end 34B. The hub shaft 34 extends between the first shaft end 34A and the second shaft end 34B along the axis A1. The first fixed member 36 is mounted on the first shaft end 34A of the hub shaft 34. The second fixed member 38 is mounted on the second shaft end 34B of the hub shaft 34.

[0110] The generator 10 includes a support member 40, a cover 42, a controller 44, and a cable 45. The support member 40 and the cover 42 are mounted on the stator 12. The controller 44 is disposed in an accommodation space 42A formed by the stator 12 and the cover 42. The controller 44 is mounted on the cover 42. The controller 44 is electrically connected to the coil 30. The controller 44 is connected to other electrical devices 9 such as a headlight via the cable 45. The hub shaft 34 includes a guide groove 34G extending along the axis A1. The cable 45 is disposed in the guide groove 34G.

[0111] The controller 44 includes, for example, a control circuit and a substrate. The control circuit is configured to control the power generated by the magnet 18 and the coil 30. The control circuit is mounted on the substrate. The controller 44 includes an arithmetic processing device configured to execute a predetermined control program. The arithmetic processing device includes, for example, a central processing unit (CPU) and a memory. However, the structure of the controller 44 is not limited to the above structure. The controller 44 may be at least partially mounted on the rotor 16 instead of the stator 12, or may be at least partially mounted on a device other than the motor.

[0112] As Figure 2 shown, the stator 12 of the generator 10 of the human-powered vehicle 2 includes a plurality of yoke plates 46. The plurality of yoke plates 46 are arranged circumferentially of the axis A1 in the circumferential direction D2. The plurality of yoke plates 46 are mounted on the hub shaft 34. The hub shaft 34 supports the coil 30 and the plurality of yoke plates 46. The stator 12 of the generator 10 of the human-powered vehicle 2 includes a plurality of yoke plates 48. The plurality of yoke plates 48 are arranged circumferentially of the axis A1 in the circumferential direction D2. The plurality of yoke plates 48 are mounted on the hub shaft 34. The hub shaft 34 supports the coil 30 and the plurality of yoke plates 48. The yoke plates 46 and 48 are made of a magnetic material, for example.

[0113] The stator 12 includes a lock nut 50. The lock nut 50 is mounted on the hub shaft 34 to hold the coil 30, the spool 32, the plurality of yoke plates 46, the plurality of yoke plates 48, the cover 42, and the support member 40 on the hub shaft 34. The yoke plate 46 is also referred to as the first yoke plate 46. The yoke plate 48 is also referred to as the second yoke plate 48.

[0114] As Figure 3As shown, a plurality of yoke pieces 46 are configured as separate components. The plurality of yoke pieces 46 are arranged at equal intervals in the circumferential direction D2. The plurality of yoke pieces 46 have the same shape as each other. However, at least one of the plurality of yoke pieces 46 may also have a shape different from that of the other yoke pieces 46.

[0115] A plurality of yoke pieces 48 are configured as separate components. The plurality of yoke pieces 48 are arranged at equal intervals in the circumferential direction D2. The plurality of yoke pieces 48 have the same shape as each other. However, at least one of the plurality of yoke pieces 48 may also have a shape different from that of the other yoke pieces 48.

[0116] The lock nut 50 includes a screw hole 50A. The hub shaft 34 includes a threaded portion 34C. The screw hole 50A of the lock nut 50 engages with the threaded portion 34C of the hub shaft 34. The hub shaft 34 includes a large-diameter portion 34D. The support member 40 contacts the large-diameter portion 34D in the axial direction D1. The coil 30, the bobbin 32, the support member 40, the cover 42, the plurality of yoke pieces 46, and the plurality of yoke pieces 48 are sandwiched between the support member 40 and the large-diameter portion 34D of the hub shaft 34 in the axial direction D1.

[0117] As Figure 3 shown, the stator 12 of the generator 10 of the human-powered vehicle 2 includes a connecting member 56. The connecting member 56 is configured as a component independent of the plurality of yoke pieces 46. The bobbin 32 is configured as a component independent of the plurality of yoke pieces 46 and the connecting member 56. The connecting member 56 may also be referred to as the first connecting member 56.

[0118] The connecting member 56 extends in the circumferential direction D2. The connecting member 56 is annular. The connecting member 56 includes a cylindrical portion 56A extending along the axis A1. The connecting member 56 includes a flange 56B extending outward from the cylindrical portion 56A in the radial direction of the axis A1. The cylindrical portion 56A includes a through hole 56C through which the hub shaft 34 passes.

[0119] The stator 12 of the generator 10 of the human-powered vehicle 2 includes a connecting member 58. The connecting member 58 is configured as a component independent of the plurality of yoke pieces 48. The bobbin 32 is configured as a component independent of the plurality of yoke pieces 48 and the connecting member 58. The connecting member 58 is also referred to as the second connecting member 58.

[0120] The connecting member 58 extends in the circumferential direction D2. The connecting member 58 is annular. The connecting member 58 includes a cylindrical portion 58A extending along the axis A1. The connecting member 58 includes a flange 58B extending outward from the cylindrical portion 58A in the radial direction of the axis A1. The cylindrical portion 58A has a through hole 58C through which the hub shaft 34 passes.

[0121] As Figure 4As shown, a plurality of yoke pieces 46 are arranged at equal intervals in the circumferential direction D2. The plurality of yoke pieces 46 are respectively fixed to the connecting member 56. The plurality of yoke pieces 46 and the connecting member 56 are configured to be detachably mounted on the hub shaft 34 as an integral unit. The plurality of yoke pieces 46 and the connecting member 56 constitute a yoke assembly 60. The yoke assembly 60 is also referred to as the first yoke assembly 60.

[0122] As Figure 4 and Figure 5 shown, the plurality of yoke pieces 46 are respectively fixed to the connecting member 56 by at least one of welding, bonding, and fitting. The plurality of yoke pieces 46 are respectively fixed to the cylindrical portion 56A by at least one of welding, bonding, and fitting. The plurality of yoke pieces 46 are respectively fixed to the flange 56B by at least one of welding, bonding, and fitting. In the present embodiment, the plurality of yoke pieces 46 are respectively fixed to the connecting member 56 by welding. As Figure 5 shown, the plurality of yoke pieces 46 are respectively fixed to the cylindrical portion 56A by welding. As Figure 4 shown, the plurality of yoke pieces 46 are respectively fixed to the flange 56B by welding. However, the plurality of yoke pieces 46 may also be respectively fixed to the connecting member 56 by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. However, the plurality of yoke pieces 46 may also be respectively fixed to the cylindrical portion 56A by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. The plurality of yoke pieces 46 may also be respectively fixed to the flange 56B by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. Examples of welding include laser welding. Examples of bonding include adhesive bonding. Examples of fitting include a structure in which the plurality of yoke pieces 46 are inserted into a plurality of grooves provided on the connecting member 56.

[0123] As Figure 4 shown, the yoke assembly 60 includes at least one welding portion 62. The at least one welding portion 62 is a portion formed by welding and is used to fix the yoke piece 46 to the connecting member 56. In the present embodiment, the yoke assembly 60 includes a plurality of welding portions 62. The welding portion 62 fixes the yoke piece 46 to the flange 56B of the connecting member 56. The plurality of welding portions 62 are arranged at equal intervals in the circumferential direction D2.

[0124] As Figure 5As shown, the yoke assembly 60 includes at least one welding portion 64. The at least one welding portion 64 is a portion formed by welding and is used to fix the yoke plate 46 to the connecting member 56. In the present embodiment, the yoke assembly 60 includes a plurality of welding portions 64. The welding portions 64 fix the yoke plates 46 to the cylindrical portion 56A of the connecting member 56. The plurality of welding portions 64 are arranged at equal intervals in the circumferential direction D2.

[0125] As Figure 6 shown, a plurality of yoke plates 48 are arranged at equal intervals in the circumferential direction D2. The plurality of yoke plates 48 are respectively fixed to the connecting member 58. The plurality of yoke plates 48 and the connecting member 58 are configured to be detachably mounted on the hub shaft 34 as an integrated unit. The plurality of yoke plates 48 and the connecting member 58 constitute a yoke assembly 66. The yoke assembly 66 may also be referred to as the second yoke assembly 66.

[0126] As Figure 6 and Figure 7 shown, the plurality of yoke plates 48 are respectively fixed to the connecting member 58 by at least one of welding, bonding, and fitting. The plurality of yoke plates 48 are respectively fixed to the cylindrical portion 58A by at least one of welding, bonding, and fitting. The plurality of yoke plates 48 are respectively fixed to the flange 58B by at least one of welding, bonding, and fitting. In the present embodiment, the plurality of yoke plates 48 are respectively fixed to the connecting member 58 by welding. The plurality of yoke plates 48 are respectively fixed to the cylindrical portion 58A by welding. The plurality of yoke plates 48 are respectively fixed to the flange 58B by welding. However, the plurality of yoke plates 48 may also be respectively fixed to the connecting member 58 by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. The plurality of yoke plates 48 may also be respectively fixed to the cylindrical portion 58A by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. The plurality of yoke plates 48 may also be respectively fixed to the flange 58B by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. Examples of welding include laser welding. Examples of bonding include adhesive bonding. Examples of fitting include a structure in which the plurality of yoke plates 48 are inserted into a plurality of grooves provided on the connecting member 58.

[0127] As Figure 6As shown, the yoke assembly 66 includes at least one welding portion 68. The at least one welding portion 68 is a portion formed by welding for fixing the yoke plate 48 to the connecting member 58. In the present embodiment, the yoke assembly 66 includes a plurality of welding portions 68. The welding portion 68 fixes the yoke plate 48 to the flange 58B of the connecting member 58. The plurality of welding portions 68 are arranged at equal intervals in the circumferential direction D2.

[0128] As Figure 7 shown, the yoke assembly 66 includes at least one welding portion 70. The at least one welding portion 70 is a portion formed by welding for fixing the yoke plate 48 to the connecting member 58. In the present embodiment, the yoke assembly 66 includes a plurality of welding portions 70. The welding portion 70 fixes the yoke plate 48 to the cylindrical portion 58A of the connecting member 58. The plurality of welding portions 70 are arranged at equal intervals in the circumferential direction D2.

[0129] As Figure 8 shown, the connecting member 56 includes at least one protruding portion 56D protruding radially inward from the cylindrical portion 56A. In the present embodiment, the connecting member 56 includes a plurality of protruding portions 56D protruding radially inward from the cylindrical portion 56A. The plurality of protruding portions 56D are configured to position the plurality of yoke plates 46 relative to the hub shaft 34 in the circumferential direction D2.

[0130] The connecting member 56 includes at least one protrusion 56E protruding axially D1 toward the axis A1 from the flange 56B. In the present embodiment, the connecting member 56 includes a plurality of protrusions 56E protruding axially D1 from the flange 56B. The plurality of protrusions 56E are arranged between two adjacent yoke plates 46 in the circumferential direction D2. At least one of the plurality of protrusions 56E may be omitted from the connecting member 56.

[0131] As Figure 9 shown, the flange 56B includes at least one hole 56F. In the present embodiment, the flange 56B includes a plurality of holes 56F. The plurality of holes 56F are arranged at equal intervals in the circumferential direction D2. The plurality of holes 56F each include a long hole extending in the circumferential direction D2. However, the shape of the hole 56F is not limited to a long hole. At least one of the plurality of holes 56F may be omitted from the connecting member 56.

[0132] As Figure 10 shown, the connecting member 58 has substantially the same shape as the connecting member 56. The connecting member 58 includes at least one protruding portion 58D protruding radially inward from the cylindrical portion 58A. In the present embodiment, the connecting member 58 includes a plurality of protruding portions 58D protruding radially inward from the cylindrical portion 58A. The plurality of protruding portions 58D are configured to position the plurality of yoke plates 46 relative to the hub shaft 34 in the circumferential direction D2.

[0133] The connecting member 58 includes at least one protrusion 58E that protrudes from the flange 58B in the axial direction D1. In the present embodiment, the connecting member 58 includes a plurality of protrusions 58E that protrude from the flange 58B in the axial direction D1. The plurality of protrusions 58E are disposed between two circumferentially adjacent yoke plates 48 in the circumferential direction D2. As Figure 9 and Figure 11 shown, the circumferential positions of the plurality of protrusions 58E are different from the circumferential positions of the plurality of protrusions 56E.

[0134] As Figure 11 shown, the flange 58B includes at least one hole 58F. In the present embodiment, the flange 58B includes a plurality of holes 58F. The plurality of holes 58F are equidistantly disposed in the circumferential direction D2. Each of the plurality of holes 58F includes a long hole extending in the circumferential direction D2. However, the shape of the hole 58F is not limited to the long hole.

[0135] As Figure 12 shown, the connecting member 56 is at least partially disposed between the plurality of yoke plates 46 and the axis A1 in the radial direction D3 of the axis A1. The connecting member 56 is at least partially disposed between the plurality of yoke plates 46 and the hub shaft 34 in the radial direction D3 of the axis A1. In the present embodiment, the connecting member 56 is partially disposed between the plurality of yoke plates 46 and the axis A1 in the radial direction D3. The connecting member 56 is partially disposed between the plurality of yoke plates 46 and the hub shaft 34 in the radial direction D3. The cylindrical portion 56A is entirely disposed between the plurality of yoke plates 46 and the hub shaft 34 in the radial direction D3 of the axis A1. However, the connecting member 56 may also be entirely disposed between the plurality of yoke plates 46 and the axis A1 in the radial direction D3. The connecting member 56 may also be entirely disposed between the plurality of yoke plates 46 and the hub shaft 34 in the radial direction D3. The cylindrical portion 56A may also be partially disposed between the plurality of yoke plates 46 and the hub shaft 34 in the radial direction D3.

[0136] Each of the plurality of yoke plates 46 includes a yoke main body 46A and a fixing portion 46B. The yoke main body 46A is disposed to face the coil 30 in the radial direction D3 of the axis A1. The fixing portion 46B extends from the yoke main body 46A toward the axis A1 in the radial direction D3. The yoke plate 46 includes a first yoke end 46C and a second yoke end 46D. The yoke plate 46 extends from the first yoke end 46C to the second yoke end 46D along the axis A1. The fixing portion 46B is provided at the first yoke end 46C and extends inward in the radial direction D3 from the first yoke end 46C toward the axis A1. The fixing portion 46B includes a first fixing portion 46E and a second fixing portion 46F. The first fixing portion 46E protrudes radially inward from the yoke main body 46A in the radial direction D3. The second fixing portion 46F protrudes from the first fixing portion 46E in the axial direction D1.

[0137] The fixing portion 46B is at least partially disposed within the support hole 32A. The connecting member 56 is at least partially disposed within the support hole 32A. In the present embodiment, the fixing portion 46B is partially disposed within the support hole 32A. The second fixing portion 46F is partially disposed within the support hole 32A. The connecting member 56 is partially disposed within the support hole 32A. However, the fixing portion 46B may also be entirely disposed within the support hole 32A. The connecting member 56 may also be entirely disposed within the support hole 32A.

[0138] The fixing portion 46B of the yoke plate 46 is fixed to the connecting member 56. In the present embodiment, the fixing portion 46B of the yoke plate 46 is fixed to the connecting member 56 by welding. The fixing portion 46B of the yoke plate 46 is fixed to the cylindrical portion 56A and the flange 56B by welding. The first fixing portion 46E is fixed to the flange 56B by welding. The second fixing portion 46F is fixed to the cylindrical portion 56A by welding. However, the fixing portion 46B of the yoke plate 46 may also be fixed to the connecting member 56 (the cylindrical portion 56A and / or the flange 56B) by any one of the following methods: (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion, and fitting.

[0139] The cylindrical portion 56A of the connecting member 56 is in contact with the outer peripheral surface of the hub shaft 34. A plurality of yoke plates 46 are respectively fixed to the connecting member 56. Therefore, the radial positions of the plurality of yoke plates 46 relative to the hub shaft 34 are determined by the connecting member 56.

[0140] As Figure 13 shown, the connecting member 58 is at least partially disposed between the plurality of yoke plates 48 and the axis A1 in the radial direction D3 of the axis A1. The connecting member 58 is at least partially disposed between the plurality of yoke plates 48 and the hub shaft 34 in the radial direction D3 of the axis A1. In the present embodiment, the connecting member 58 is partially disposed between the plurality of yoke plates 48 and the axis A1 in the radial direction D3. The connecting member 58 is partially disposed between the plurality of yoke plates 48 and the hub shaft 34 in the radial direction D3. The cylindrical portion 58A is entirely disposed between the plurality of yoke plates 48 and the hub shaft 34 in the radial direction D3 of the axis A1. However, the connecting member 58 may also be entirely disposed between the plurality of yoke plates 48 and the axis A1 in the radial direction D3. The connecting member 58 may also be entirely disposed between the plurality of yoke plates 48 and the hub shaft 34 in the radial direction D3. The cylindrical portion 58A may also be partially disposed between the plurality of yoke plates 48 and the hub shaft 34 in the radial direction D3.

[0141] The plurality of yoke plates 48 each include a yoke main body 48A and a fixing portion 48B. The yoke main body 48A is configured to face the coil 30 in the radial direction D3 of the axis A1. The fixing portion 48B extends from the yoke main body 48A toward the axis A1 in the radial direction D3. The yoke plate 48 includes a first yoke end 48C and a second yoke end 48D. The yoke plate 48 extends from the first yoke end 48C to the second yoke end 48D along the axis A1. The fixing portion 48B is provided at the first yoke end 48C and extends inward in the radial direction D3 from the first yoke end 48C toward the axis A1. The fixing portion 48B includes a first fixing portion 48E and a second fixing portion 48F. The first fixing portion 48E protrudes radially inward from the yoke main body 48A in the radial direction D3. The second fixing portion 48F protrudes from the first fixing portion 48E in the axial direction D1.

[0142] The fixing portion 48B is at least partially disposed within the support hole 32A. The connecting member 58 is at least partially disposed within the support hole 32A. In the present embodiment, the fixing portion 48B is partially disposed within the support hole 32A. The second fixing portion 48F is partially disposed within the support hole 32A. The connecting member 58 is partially disposed within the support hole 32A. However, the fixing portion 48B may also be entirely disposed within the support hole 32A. The connecting member 58 may also be entirely disposed within the support hole 32A.

[0143] The fixing portion 48B is fixed to the connecting member 58. In the present embodiment, the fixing portion 48B of the yoke plate 48 is fixed to the connecting member 58 by welding. The fixing portion 48B of the yoke plate 48 is fixed to the cylindrical portion 58A and the flange 58B by welding. The first fixing portion 48E is fixed to the flange 58B by welding. The second fixing portion 48F is fixed to the cylindrical portion 58A by welding. However, the fixing portion 48B of the yoke plate 48 may also be fixed to the connecting member 58 (the cylindrical portion 58A and / or the flange 58B) by any one of (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion and fitting.

[0144] The cylindrical portion 58A of the connecting member 58 contacts the outer peripheral surface of the hub shaft 34. The plurality of yoke plates 48 are respectively fixed to the connecting member 58. Therefore, the radial positions of the plurality of yoke plates 48 with respect to the hub shaft 34 are determined by the connecting member 58.

[0145] As Figure 12 and Figure 13As shown, the spool 32 includes a spool body 32B, a first support portion 32C, and a second support portion 32D. The spool body 32B is cylindrical. The first support portion 32C projects radially outward from the spool body 32B. The second support portion 32D projects radially outward from the spool body 32B. The first support portion 32C and the second support portion 32D are arranged at an interval in the axial direction D1 of the axis A1. The coil 30 is wound around the spool body 32B and is disposed between the first support portion 32C and the second support portion 32D.

[0146] The coil 30 and the spool 32 are disposed in the axial direction D1 between the plurality of fixing portions 46B of the plurality of yoke plates 46 and the plurality of fixing portions 48B of the plurality of yoke plates 48. The fixing portion 46B of the yoke plate 46 is in contact with the fixing portion 48B of the yoke plate 48 in the axial direction D1. The cylindrical portion 56A of the connecting member 56 is disposed at an interval from the cylindrical portion 58A of the connecting member 58 in the axial direction D1. Therefore, the plurality of fixing portions 46B of the plurality of yoke plates 46 and the plurality of fixing portions 48B of the plurality of yoke plates 48 can determine the relative positions of the plurality of yoke plates 46 and the plurality of yoke plates 48 in the axial direction D1.

[0147] As Figure 14 shown, the intervals between the plurality of yoke plates 46 are the same as the intervals between the plurality of yoke plates 48. The phases of the plurality of yoke plates 46 are offset by half an interval in the circumferential direction D2 from the phases of the plurality of yoke plates 48. The plurality of yoke plates 46 are respectively disposed between two adjacent yoke plates 48 of the plurality of yoke plates 48 in the circumferential direction D2. The plurality of yoke bodies 46A of the plurality of yoke plates 46 are disposed between two adjacent yoke bodies 48A of the plurality of yoke plates 48 in the circumferential direction D2.

[0148] The hub shaft 34 includes at least one positioning groove 34E. In the present embodiment, the hub shaft 34 includes a plurality of positioning grooves 34E. The plurality of positioning grooves 34E are provided on the outer peripheral surface of the hub shaft 34. The protruding portion 56D of the connecting member 56 is disposed in the positioning groove 34E to restrict the rotation of the plurality of yoke plates 46 and the connecting member 56 relative to the hub shaft 34.

[0149] As Figure 15 shown, the protruding portion 58D of the connecting member 58 is disposed in the positioning groove 34E to restrict the rotation of the connecting member 58 relative to the hub shaft 34. That is, the rotation of the plurality of yoke plates 48 and the connecting member 58 relative to the hub shaft 34 is restricted by the plurality of protruding portions 58D.

[0150] As Figure 14 and Figure 15 shown, in the present embodiment, the support hole 32A of the spool 32 has a polygon. The inner peripheral surface forming the support hole 32A includes a plurality of planes arranged in the circumferential direction D2. As Figure 14As shown, multiple planes forming the support holes 32A are in contact with multiple fixing portions 46B of multiple yoke plates 46. As Figure 15 shown, multiple planes forming the support holes 32A are in contact with multiple fixing portions 48B of multiple yoke plates 48. However, the shape of the support holes 32A is not limited to polygons.

[0151] The stator 12 of the generator 10 of the human - powered vehicle 2 is manufactured by Figure 16 the manufacturing method shown. As Figure 17 shown, the manufacturing method of the stator 12 of the generator 10 of the human - powered vehicle 2 uses a jig 80. The jig 80 is used when assembling the yoke assembly 60. The jig 80 may also be referred to as the first jig 80. The jig 80 includes a jig body 82 and multiple positioning magnets 84. The jig body 82 includes an outer - peripheral positioning portion 86 and an inner - peripheral positioning portion 88. The jig body 82 has a reference axis A8 corresponding to the axis A1 of the stator 12. The inner - peripheral positioning portion 88 is arranged inside the outer - peripheral positioning portion 86 in the radial direction of the reference axis A8. The outer - peripheral positioning portion 86 includes an inner - peripheral surface 86A and multiple positioning grooves 86B provided on the inner - peripheral surface 86A. The multiple positioning grooves 86B are arranged at equal intervals in the circumferential direction D82 of the reference axis A8 with the reference axis A8 as the center. The pitch of the multiple positioning grooves 86B is the same as the pitch of the multiple yoke plates 46. In addition, the outermost - peripheral position of the multiple positioning grooves 86B in the radial direction with respect to the reference axis A8 is the same as the outermost - peripheral position of the multiple yoke plates 46 in the radial direction with respect to the axis A1. The multiple positioning magnets 84 are arranged at positions corresponding to the multiple positioning grooves 86B.

[0152] As Figure 18 shown, the positioning magnets 84 are provided on the outer - peripheral positioning portion 86 so as to protrude from the positioning grooves 86B. The inner - peripheral positioning portion 88 includes a positioning surface 88A and a shaft portion 88B. The positioning surface 88A is perpendicular to the reference axis A8 and faces the axial direction D81 of the reference axis A8. The shaft portion 88B protrudes from the positioning surface 88A in the axial direction D8. The positioning surface 88A is configured to determine the position of the multiple yoke plates 46 in the axial direction D81 in a state where the multiple yoke plates 46 are arranged in the multiple positioning grooves 86B. The positioning surface 88A is configured to be in contact with the multiple fixing portions 46B of the multiple yoke plates 46 in a state where the multiple yoke plates 46 are arranged in the multiple positioning grooves 86B.

[0153] As Figure 16 and Figure 17 shown, the manufacturing method of the stator 12 of the generator 10 of the human - powered vehicle 2 includes a yoke - arranging process S1, in which the multiple yoke plates 46 are installed on the jig 80 in such a way that the multiple yoke plates 46, which are independent components, are arranged around the reference axis A8. As Figure 17As shown, in the yoke configuration step S1, a plurality of yoke plates 46 are inserted into a plurality of positioning grooves 86B. More specifically, in the yoke configuration step S1, the yoke main body 46A of the yoke plate 46 is inserted into the positioning groove 86B. Since the yoke plate 46 is made of a magnetic material, when the yoke plate 46 is inserted into the positioning groove 86B, the yoke plate 46 is attracted by the positioning magnet 84. Therefore, the positions of the plurality of yoke plates 46 relative to the reference axis A8 in the circumferential and radial directions are determined.

[0154] In addition, as Figure 18 shown, in the yoke configuration step S1, a plurality of yoke plates 46 are arranged on the jig 80 in contact with the positioning surface 88A. More specifically, in the yoke configuration step S1, in a state where a plurality of yoke plates 46 are inserted into a plurality of positioning grooves 86B, a plurality of fixing portions 46B of the plurality of yoke plates 46 are arranged on the jig 80 in contact with the positioning surface 88A. Therefore, the positions of the plurality of yoke plates 46 relative to the reference axis A8 in the axial direction are determined. At this time, a gap 89 is formed between the plurality of yoke plates 46 in the radial direction D3 and the shaft portion 88B, and this gap 89 is used to insert the cylindrical portion 56A of the connecting member 56.

[0155] As Figure 16 and Figure 19 shown, the manufacturing method of the stator 12 of the generator 10 of the human-powered vehicle 2 includes a connecting member configuration step S2 of mounting the connecting member 56 on the jig 80. As Figure 19 shown, in the connecting member configuration step S2, the connecting member 56 is mounted on the jig 80 such that the axis A1 of the connecting member 56 substantially coincides with the reference axis A8. More specifically, the cylindrical portion 56A of the connecting member 56 is inserted into the gap 89 formed between the plurality of yoke plates 46 and the shaft portion 88B.

[0156] As Figure 20 shown, the shaft portion 88B includes a plurality of additional positioning grooves 88C. When the cylindrical portion 56A of the connecting member 56 is inserted into the gap 89 (for example, refer to Figure 19 ), the plurality of protruding portions 56D of the connecting member 56 are respectively inserted into the plurality of additional positioning grooves 88C. Thereby, the connecting member 56 can be arranged at a specified angle relative to the plurality of yoke plates 46.

[0157] As Figure 16 and Figure 21As shown, the method for manufacturing the stator 12 of the generator 10 of the human-powered vehicle 2 includes a fixing process S3 of fixing a plurality of yoke plates 46 to the connecting member 56 respectively. In the fixing process S3, the plurality of yoke plates 46 are respectively fixed to the connecting member 56 (S3A) by at least one of welding, bonding, and fitting. In the fixing process S3, the plurality of yoke plates 46 are respectively fixed to the flange 56B of the connecting member 56 by at least one of welding, bonding, and fitting. In the present embodiment, the plurality of yoke plates 46 are respectively fixed to the flange 56B of the connecting member 56 by welding. However, the plurality of yoke plates 46 may also be respectively fixed to the connecting member 56 by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. The plurality of yoke plates 46 may also be respectively fixed to the flange 56B by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. In the present embodiment, the plurality of yoke plates 46 can be fixed to the outer peripheral edge of the flange 56B by welding. Therefore, in the fixing process S3, a plurality of welded portions 62 are formed on the outer peripheral side of the flange 56B.

[0158] As Figure 16 and Figure 5 shown, in the fixing process S3, the plurality of yoke plates 46 fixed to the connecting member 56 are removed from the jig 80 (S3B). In the fixing process S3, the plurality of yoke plates 46 removed from the jig 80 are further fixed to the connecting member 56 by welding respectively (S3C). More specifically, the plurality of fixing portions 46B of the plurality of yoke plates 46 are fixed to the cylindrical portion 56A of the connecting member 56 by welding. Therefore, in the fixing process S3, a plurality of welded portions 64 are formed on the inner peripheral side of the plurality of fixing portions 46B. However, the process S3C of fixing the plurality of yoke plates 46 removed from the jig 80 to the connecting member 56 by welding respectively may be omitted in the fixing process S3.

[0159] As Figure 16 shown, similarly to the connecting member 56 and the plurality of yoke plates 46, a plurality of yoke plates 48 are respectively fixed to the connecting member 58. As Figure 22As shown, a jig 90 is used in the manufacturing method of the stator 12 of the generator 10 of the human - powered vehicle 2. The structure of the jig 90 is substantially the same as that of the jig 80. The jig 90 is used when assembling the yoke assembly 66. The jig 90 can also be referred to as the second jig 90. The jig 90 includes a jig body 92 and a plurality of positioning magnets 94. The jig body 92 includes an outer - peripheral positioning portion 96 and an inner - peripheral positioning portion 98. The jig body 92 has a reference axis A9 corresponding to the axis A1 of the stator 12. The inner - peripheral positioning portion 98 is arranged inside the outer - peripheral positioning portion 96 in the radial direction of the reference axis A9. The outer - peripheral positioning portion 96 includes an inner - peripheral surface 96A and a plurality of positioning grooves 96B provided on the inner - peripheral surface 96A. The plurality of positioning grooves 96B are arranged at equal intervals in the circumferential direction D92 of the reference axis A9 with the reference axis A9 as the center. The pitch of the plurality of positioning grooves 96B is the same as the pitch of the plurality of yoke plates 48. In addition, the outermost - peripheral position of the plurality of positioning grooves 96B in the radial direction with respect to the reference axis A9 is the same as the outermost - peripheral position of the plurality of yoke plates 48 in the radial direction with respect to the axis A1. The plurality of positioning magnets 94 are arranged at positions corresponding to the plurality of positioning grooves 96B.

[0160] The shaft portion 98B includes a plurality of additional positioning grooves 98C. As Figure 17 and Figure 22 shown, the positional relationship of the plurality of positioning grooves 96B and the plurality of additional positioning grooves 98C in the circumferential direction D92 is different from the positional relationship of the plurality of positioning grooves 86B and the plurality of additional positioning grooves 88C in the circumferential direction D82.

[0161] As Figure 18 shown, the positioning magnets 94 are provided on the outer - peripheral positioning portion 96 so as to be exposed from the positioning grooves 96B. The inner - peripheral positioning portion 98 includes a positioning surface 98A and a shaft portion 98B. The positioning surface 98A is perpendicular to the reference axis A9 and faces the axial direction D91 of the reference axis A9. The shaft portion 98B protrudes from the positioning surface 98A in the axial direction D8. The positioning surface 98A is configured to determine the position of the plurality of yoke plates 48 in the axial direction D91 in a state where the plurality of yoke plates 48 are arranged in the plurality of positioning grooves 96B. The positioning surface 98A is configured to contact the plurality of fixing portions 48B of the plurality of yoke plates 48 in a state where the plurality of yoke plates 48 are arranged in the plurality of positioning grooves 96B.

[0162] As Figure 16 and Figure 22 shown, the manufacturing method of the stator 12 of the generator 10 of the human - powered vehicle 2 includes a yoke - arranging step S4, in which the plurality of yoke plates 48, which are independent components, are mounted on the jig 90 in a manner of being arranged around the reference axis A9. As Figure 22As shown, in the yoke configuration step S4, a plurality of yoke pieces 48 are inserted into a plurality of positioning grooves 96B. More specifically, in the yoke configuration step S4, the yoke main body 48A of the yoke piece 48 is inserted into the positioning groove 96B. Since the yoke piece 48 is made of a magnetic material, when the yoke piece 48 is inserted into the positioning groove 96B, the yoke piece 48 is attracted by the positioning magnet 94. Therefore, the positions of the plurality of yoke pieces 48 in the circumferential and radial directions with respect to the reference axis A9 are determined.

[0163] In addition, as Figure 18 shown, in the yoke configuration step S4, a plurality of yoke pieces 48 are arranged on the jig 90 in contact with the positioning surface 98A. More specifically, in the yoke configuration step S4, in a state where a plurality of yoke pieces 48 are inserted into a plurality of positioning grooves 96B, a plurality of fixing portions 48B of the plurality of yoke pieces 48 are arranged on the jig 90 in contact with the positioning surface 98A. Therefore, the positions of the plurality of yoke pieces 48 in the axial direction with respect to the reference axis A9 are determined. At this time, a gap 99 is formed between the plurality of yoke pieces 48 in the radial direction D3 and the shaft portion 98B, and this gap 99 is for inserting the cylindrical portion 58A of the connecting member 58.

[0164] As Figure 16 and Figure 19 shown, the manufacturing method of the stator 12 of the generator 10 of the human-powered vehicle 2 includes a connecting member configuration step S5 of mounting the connecting member 56 on the jig 80. As Figure 19 shown, in the connecting member configuration step S5, the connecting member 58 is mounted on the jig 90 such that the axis A1 of the connecting member 58 substantially coincides with the reference axis A9. More specifically, the cylindrical portion 58A of the connecting member 58 is inserted into the gap 99 formed between the plurality of yoke pieces 48 and the shaft portion 98B.

[0165] As Figure 23 shown, when the cylindrical portion 58A of the connecting member 58 is inserted into the gap 99 (for example, refer to Figure 22 ), the plurality of protruding portions 58D of the connecting member 58 are respectively inserted into the plurality of additional positioning grooves 98C. Thereby, the connecting member 58 can be arranged at a specified angle with respect to the plurality of yoke pieces 48.

[0166] As Figure 16 and Figure 24As shown, the manufacturing method of the stator 12 of the generator 10 of the human - powered vehicle 2 includes a fixing process S6 of fixing a plurality of yoke plates 48 to the connecting member 58 respectively. In the fixing process S6, the plurality of yoke plates 48 are fixed to the connecting member 58 respectively by at least one of welding, bonding, and fitting (S6A). In the fixing process S6, the plurality of yoke plates 48 are fixed to the flange 58B of the connecting member 58 respectively by at least one of welding, bonding, and fitting. In the present embodiment, the plurality of yoke plates 48 are fixed to the flange 58B of the connecting member 58 by welding respectively. However, the plurality of yoke plates 48 can also be fixed to the connecting member 58 respectively by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding and fitting. The plurality of yoke plates 48 can also be fixed to the flange 58B respectively by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding and fitting. In the present embodiment, the plurality of yoke plates 48 are fixed to the outer peripheral edge of the flange 58B by welding. Therefore, in the fixing process S6, a plurality of welding portions 62 are formed on the outer peripheral side of the flange 58B.

[0167] As Figure 16 and Figure 7 shown, in the fixing process S6, the plurality of yoke plates 48 fixed to the connecting member 58 are removed from the jig 90 (S6B). In the fixing process S6, the plurality of yoke plates 48 removed from the jig 90 are further fixed to the connecting member 58 by welding respectively (S6C). More specifically, the plurality of fixing portions 48B of the plurality of yoke plates 48 are fixed to the cylindrical portion 58A of the connecting member 58 by welding. Therefore, in the fixing process S6, a plurality of welding portions 64 are formed on the inner peripheral side of the plurality of fixing portions 48B. However, the process of fixing the plurality of yoke plates 48 removed from the jig 90 to the connecting member 58 by welding respectively can be omitted from the fixing process S6.

[0168] As Figure 16 and Figure 3As shown, the manufacturing method of the stator 12 further includes an installation process S7 of installing a plurality of yoke plates 46 (i.e., yoke assembly 60) connected by a connecting member 56 on the hub shaft 34. More specifically, in the installation process S7, before the connecting member 56 and the plurality of yoke plates 46 are installed on the hub shaft 34, the support member 40, the cover 42, and the controller 44 are installed on the hub shaft 34 (S7A). In the installation process S7, the connecting member 56 and the plurality of yoke plates 46 (i.e., yoke assembly 60) are installed on the coil 30 and the bobbin 32 (S7B). In addition, in the installation process S7, a plurality of yoke plates 48 (i.e., yoke assembly 66) connected by a connecting member 58 are installed on the coil 30 and the bobbin 32 (S7C). In the installation process S7, after the support member 40, the cover 42, and the controller 44 are installed on the hub shaft 34, the coil unit composed of the yoke assembly 60, the yoke assembly 66, the coil 30, and the bobbin 32 is installed on the hub shaft 34 (S7D). In the installation process S7, the lock nut 50 is installed on the hub shaft 34 (S7E). By screwing the lock nut 50 into the threaded portion 34C, the support member 40, the cover 42, the connecting member 56, the plurality of yoke plates 46, the bobbin 32, the plurality of yoke plates 48, and the connecting member 58 are clamped between the lock nut 50 and the large diameter portion 34D. It should be noted that the assembly order of the support member 40, the cover 42, the controller 44, the coil 30, the bobbin 32, the yoke assembly 60, and the yoke assembly 66 is not limited to the above order. For example, at least two of the yoke assembly 60, the yoke assembly 66, and the bobbin 32 may be respectively installed on the hub shaft 34.

[0169] (Second Embodiment)

[0170] Hereinafter, while referring to Figures 25 to 36 , the generator 210 according to the second embodiment will be described. The generator 210 has a structure substantially the same as that of the generator 10 according to the first embodiment except for the stator 12. Therefore, the components having substantially the same structure as those of the first embodiment are denoted by the same reference numerals, and the detailed description and / or illustration are omitted for simplicity.

[0171] As Figure 25 shown, the generator 210 of the human - powered vehicle 2 includes a stator 212 and a rotating body 14. The rotating body 14 is arranged to be rotatable about the axis A1 relative to the stator 212. The generator 210 is configured to generate electricity by the relative rotation of the stator 212 and the rotating body 14. The stator 212 is configured to be installed on the vehicle frame 4.

[0172] In the second embodiment, the sprocket support 19, the third bearing 24, the fourth bearing 26, the one-way clutch mechanism 28, the support member 40, the cover 42, and the controller 44 are omitted from the generator 210. However, the generator 210 may also include these structures.

[0173] The stator 212 further includes a hub shaft 234. The hub shaft 234 extends along the axial direction D1 of the axis A1. The hub shaft 234 includes substantially the same structure as the hub shaft 34 of the first embodiment. The through hole 34H is omitted from the hub shaft 234.

[0174] As Figure 26 shown, the stator 212 of the generator 210 of the human-powered vehicle 2 includes a plurality of yoke plates 46. The plurality of yoke plates 46 are arranged and configured in the circumferential direction D2 of the axis A1. The plurality of yoke plates 46 are mounted on the hub shaft 234. The hub shaft 234 supports the coil 30 and the plurality of yoke plates 46. The stator 212 of the generator 210 of the human-powered vehicle 2 includes a plurality of yoke plates 48. The plurality of yoke plates 48 are arranged and configured in the circumferential direction D2 of the axis A1. The plurality of yoke plates 48 are mounted on the hub shaft 234. The hub shaft 234 supports the coil 30 and the plurality of yoke plates 48.

[0175] As Figure 27 shown, the stator 212 of the generator 210 of the human-powered vehicle 2 includes a connecting member 256. The connecting member 256 is configured as a member independent of the plurality of yoke plates 46. The bobbin 32 is configured as a member independent of the plurality of yoke plates 46 and the connecting member 256. The connecting member 256 may also be referred to as the first connecting member 256.

[0176] The connecting member 256 extends in the circumferential direction D2. The connecting member 256 is annular. The connecting member 256 includes a cylindrical portion 256A extending along the axis A1. The connecting member 256 includes a flange 256B extending outward in the radial direction of the axis A1 from the cylindrical portion 256A.

[0177] The stator 212 of the generator 210 of the human-powered vehicle 2 includes a connecting member 258. The connecting member 258 is configured as a member independent of the plurality of yoke plates 48. The bobbin 32 is configured as a member independent of the plurality of yoke plates 48 and the connecting member 258. The connecting member 258 may also be referred to as the second connecting member 258.

[0178] The connecting member 258 extends in the circumferential direction D2. The connecting member 258 is annular. The connecting member 258 includes a cylindrical portion 258A extending along the axis A1. The connecting member 258 includes a flange 258B extending outward in the radial direction of the axis A1 from the cylindrical portion 258A.

[0179] The stator 212 includes a lock nut 255. The lock nut 255 has the same structure as the lock nut 50. The lock nut 50 is also referred to as the first lock nut 50. The lock nut 255 may also be referred to as the second lock nut 255. The lock nut 255 includes a threaded hole 255A. The hub shaft 234 includes a threaded portion 234F. The threaded hole 255A of the lock nut 255 engages with the threaded portion 234F of the hub shaft 234. The lock nut 50 and the lock nut 255 are installed on the hub shaft 34 to hold the coil 30, the spool 32, the plurality of yoke plates 46, and the plurality of yoke plates 48 on the hub shaft 234.

[0180] As Figure 28 shown, the plurality of yoke plates 46 are respectively fixed to the connecting member 256. Therefore, the plurality of yoke plates 46 and the connecting member 256 are configured to be detachably installed on the hub shaft 234 as an integral unit. That is, the plurality of yoke plates 46 and the connecting member 256 constitute a yoke assembly 60.

[0181] As Figure 28 and Figure 29 shown, the plurality of yoke plates 46 are respectively fixed to the connecting member 256 by at least one of welding, bonding, and fitting. The plurality of yoke plates 46 are respectively fixed to the cylindrical portion 256A by at least one of welding, bonding, and fitting. The plurality of yoke plates 46 are respectively fixed to the flange 256B by at least one of welding, bonding, and fitting. In the present embodiment, the plurality of yoke plates 46 are respectively fixed to the connecting member 256 by welding. The plurality of yoke plates 46 are respectively fixed to the cylindrical portion 256A by welding. The plurality of yoke plates 46 are respectively fixed to the flange 256B by welding. However, the plurality of yoke plates 46 may also be respectively fixed to the connecting member 256 by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. However, the plurality of yoke plates 46 may also be respectively fixed to the cylindrical portion 256A by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. The plurality of yoke plates 46 may also be respectively fixed to the flange 256B by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting.

[0182] The fixing portion 46B is fixed to the connecting member 256. In the present embodiment, the fixing portion 46B of the yoke plate 46 is fixed to the connecting member 256 by welding. The fixing portion 46B of the yoke plate 46 is fixed to the cylindrical portion 256A and the flange 256B by welding. The first fixing portion 46E is fixed to the flange 256B by welding. The second fixing portion 46F is fixed to the cylindrical portion 256A by welding. That is, the yoke assembly 60 includes a plurality of welding portions 62 and a plurality of welding portions 64. However, the fixing portion 46B of the yoke plate 46 may also be fixed to the connecting member 256 (the cylindrical portion 256A and / or the flange 256B) by any one of the following methods: (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion and fitting.

[0183] As Figure 30 shown, a plurality of yoke plates 48 are respectively fixed to the connecting member 258. Therefore, the plurality of yoke plates 48 and the connecting member 258 are configured to be detachably mounted on the hub shaft 234 as an integral unit. That is, the plurality of yoke plates 48 and the connecting member 258 constitute a yoke assembly 66.

[0184] As Figure 30 and Figure 31 shown, a plurality of yoke plates 48 are respectively fixed to the connecting member 258 by at least one of welding, adhesion, and fitting. A plurality of yoke plates 48 are respectively fixed to the cylindrical portion 258A by at least one of welding, adhesion, and fitting. A plurality of yoke plates 48 are respectively fixed to the flange 258B by at least one of welding, adhesion, and fitting. In the present embodiment, a plurality of yoke plates 48 are respectively fixed to the connecting member 258 by welding. A plurality of yoke plates 48 are respectively fixed to the cylindrical portion 258A by welding. A plurality of yoke plates 48 are respectively fixed to the flange 258B by welding. However, a plurality of yoke plates 48 may be respectively fixed to the connecting member 258 by any one of the following methods: (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion and fitting. A plurality of yoke plates 48 may be respectively fixed to the cylindrical portion 258A by any one of the following methods: (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion and fitting. A plurality of yoke plates 48 may also be respectively fixed to the flange 258B by any one of the following methods: (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion and fitting.

[0185] The fixing portion 48B is fixed to the connecting member 258. In the present embodiment, the fixing portion 48B of the yoke plate 48 is fixed to the connecting member 258 by welding. The fixing portion 48B of the yoke plate 48 is fixed to the cylindrical portion 258A and the flange 258B by welding. The first fixing portion 48E is fixed to the flange 258B by welding. The second fixing portion 48F is fixed to the cylindrical portion 258A by welding. That is, the yoke assembly 66 includes a plurality of welding portions 68 and a plurality of welding portions 70. However, the fixing portion 48B of the yoke plate 48 may also be fixed to the connecting member 258 (the cylindrical portion 258A and / or the flange 258B) by any one of the following methods: (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion and fitting).

[0186] As Figure 32 shown, the connecting member 256 includes at least one protruding portion 256D protruding radially inward from the cylindrical portion 256A. In the present embodiment, the connecting member 256 includes a plurality of protruding portions 256D protruding radially inward from the cylindrical portion 256A. The plurality of protruding portions 256D are configured to position the plurality of yoke plates 46 relative to the hub shaft 234 in the circumferential direction D2. The flange 256B includes at least one hole 256F. In the present embodiment, the flange 256B includes a plurality of holes 256F. The plurality of holes 56F are arranged at equal intervals in the circumferential direction D2. The hole 256F is circular. However, the shape of the hole 256F is not limited to circular. Although the protrusion 56E of the first embodiment is omitted from the connecting member 256, it may also include the protrusion 56E. At least one of the plurality of holes 256F may be omitted from the connecting member 256.

[0187] In the second embodiment, since the connecting member 258 has the same shape as the connecting member 256, the description of the connecting member 258 is omitted. The connecting member 258 may also have a shape different from that of the connecting member 256.

[0188] As Figure 33As shown, the connecting member 256 is at least partially disposed between the plurality of yoke plates 46 and the axis A1 in the radial direction D3 of the axis A1. The connecting member 256 is at least partially disposed between the plurality of yoke plates 46 and the hub shaft 234 in the radial direction D3 of the axis A1. In the present embodiment, the connecting member 256 is partially disposed between the plurality of yoke plates 46 and the axis A1 in the radial direction D3. The connecting member 256 is partially disposed between the plurality of yoke plates 46 and the hub shaft 234 in the radial direction D3. The cylindrical portion 256A of the connecting member 256 is entirely disposed between the plurality of yoke plates 46 and the hub shaft 234 in the radial direction D3 of the axis A1. However, the connecting member 256 may also be entirely disposed between the plurality of yoke plates 46 and the axis A1 in the radial direction D3. The connecting member 256 may also be entirely disposed between the plurality of yoke plates 46 and the hub shaft 234 in the radial direction D3. The cylindrical portion 256A of the connecting member 256 may also be partially disposed between the plurality of yoke plates 46 and the hub shaft 234 in the radial direction D3.

[0189] As Figure 34 As shown, the connecting member 258 is at least partially disposed between the plurality of yoke plates 48 and the axis A1 in the radial direction D3 of the axis A1. The connecting member 258 is at least partially disposed between the plurality of yoke plates 48 and the hub shaft 234 in the radial direction D3 of the axis A1. In the present embodiment, the connecting member 258 is partially disposed between the plurality of yoke plates 48 and the axis A1 in the radial direction D3. The connecting member 258 is partially disposed between the plurality of yoke plates 48 and the hub shaft 234 in the radial direction D3. The cylindrical portion 258A is entirely disposed between the plurality of yoke plates 48 and the hub shaft 234 in the radial direction D3 of the axis A1. However, the connecting member 258 may also be entirely disposed between the plurality of yoke plates 48 and the axis A1 in the radial direction D3. The connecting member 258 may also be entirely disposed between the plurality of yoke plates 48 and the hub shaft 234 in the radial direction D3. The cylindrical portion 258A may also be partially disposed between the plurality of yoke plates 48 and the hub shaft 234 in the radial direction D3.

[0190] As Figure 35 As shown, the hub shaft 234 includes at least one positioning groove 234E. In the present embodiment, the hub shaft 234 includes a plurality of positioning grooves 234E. The plurality of positioning grooves 234E are provided on the outer peripheral surface of the hub shaft 234. The protrusion 256D of the connecting member 256 restricts the rotation of the plurality of yoke plates 46 and the connecting member 256 relative to the hub shaft 234 through the plurality of protrusions 256D.

[0191] As Figure 36 As shown, the protrusion 258D of the connecting member 258 restricts the rotation of the plurality of yoke plates 48 and the connecting member 258 relative to the hub shaft 234 through the plurality of protrusions 258D.

[0192] The manufacturing method of the stator 212 is substantially the same as that of the stator 12 of the first embodiment, except that the steps of mounting the support member 40, the cover 42, and the controller 44 on the hub shaft 34 are omitted from the mounting process S7. The jig used in the manufacturing method of the stator 212 has substantially the same structure as the jigs 80 and 90 of the first embodiment. Therefore, the description of the manufacturing method of the stator 212 is omitted.

[0193] (Third Embodiment)

[0194] Hereinafter, while referring to Figures 37 to 45 , the generator 310 according to the third embodiment will be described. Except for the stator 212, the generator 310 has substantially the same structure as the generator 210 according to the second embodiment. Therefore, the components having substantially the same structure as those of the first and second embodiments are denoted by the same reference numerals, and detailed description and / or illustration are omitted for simplification of the description.

[0195] As Figure 37 shown, the generator 310 of the human - powered vehicle 2 includes a stator 312 and a rotating body 14. The rotating body 14 is arranged to be rotatable about the axis A1 relative to the stator 312. The generator 310 is configured to generate electricity by the relative rotation of the stator 312 and the rotating body 14. The stator 312 is configured to be mounted on the vehicle frame 4.

[0196] As Figure 38 and Figure 39 shown, the stator 312 of the generator 310 of the human - powered vehicle 2 includes a plurality of yoke plates 46 and a plurality of yoke plates 48. The stator 312 further includes a hub shaft 234. The stator 312 includes a lock nut 50 and a lock nut 255.

[0197] As Figure 39 shown, the stator 312 of the generator 310 of the human - powered vehicle 2 includes a connecting member 356. The connecting member 356 is configured as a member independent of the plurality of yoke plates 46. The spool 32 is configured as a member independent of the plurality of yoke plates 46 and the connecting member 356. The connecting member 356 may also be referred to as the first connecting member 356.

[0198] The connecting member 356 extends in the circumferential direction D2. The connecting member 356 is annular. The connecting member 356 includes a cylindrical portion 256A extending along the axis A1. The connecting member 356 includes a flange 356B extending outward from the cylindrical portion 256A in the radial direction of the axis A1.

[0199] The stator 312 of the generator 310 of the human - powered vehicle 2 is provided with a connecting member 358. The connecting member 358 is configured as a member independent of the plurality of yoke plates 48. The bobbin 32 is configured as a member independent of the plurality of yoke plates 48 and the connecting member 358. The connecting member 358 may also be referred to as the second connecting member 358.

[0200] The connecting member 358 extends in the circumferential direction D2. The connecting member 358 is annular. The connecting member 358 includes a cylindrical portion 258A extending along the axis A1. The connecting member 358 includes a flange 358B extending outward in the radial direction of the axis A1 from the cylindrical portion 258A.

[0201] As Figure 40 shown, the plurality of yoke plates 46 are respectively fixed to the connecting member 356. Accordingly, the plurality of yoke plates 46 and the connecting member 356 are configured to be detachably mounted on the hub shaft 234 as an integral unit. That is, the plurality of yoke plates 46 and the connecting member 356 constitute a yoke assembly 60.

[0202] As Figure 40 and Figure 41 shown, the plurality of yoke plates 46 are respectively fixed to the connecting member 356 by at least one of welding, bonding, and fitting. The plurality of yoke plates 46 are respectively fixed to the cylindrical portion 256A by at least one of welding, bonding, and fitting. The plurality of yoke plates 46 are respectively fixed to the flange 356B by at least one of welding, bonding, and fitting. In the present embodiment, the plurality of yoke plates 46 are respectively fixed to the connecting member 356 by welding. The plurality of yoke plates 46 are respectively fixed to the cylindrical portion 256A by welding. The plurality of yoke plates 46 are respectively fixed to the flange 356B by welding. However, the plurality of yoke plates 46 may also be respectively fixed to the connecting member 356 by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. However, the plurality of yoke plates 46 may also be respectively fixed to the cylindrical portion 256A by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting. The plurality of yoke plates 46 may also be respectively fixed to the flange 356B by any one of (1) bonding, (2) fitting, (3) welding and bonding, (4) bonding and fitting, (5) welding and fitting, and (6) welding, bonding, and fitting.

[0203] The fixing portion 46B is fixed to the connecting member 356. In the present embodiment, the fixing portion 46B of the yoke plate 46 is fixed to the connecting member 356 by welding. The fixing portion 46B of the yoke plate 46 is fixed to the cylindrical portion 256A and the flange 356B by welding. The first fixing portion 46E is fixed to the cylindrical portion 256A by welding. The second fixing portion 46F is fixed to the flange 356B by welding. That is, the yoke assembly 66 includes a plurality of welding portions 68 and a plurality of welding portions 70. However, the fixing portion 46B of the yoke plate 46 may also be fixed to the connecting member 356 (the cylindrical portion 256A and / or the flange 356B) by any one of (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion and fitting.

[0204] As Figure 42 shown, a plurality of yoke plates 48 are respectively fixed to the connecting member 358. Accordingly, the plurality of yoke plates 48 and the connecting member 358 are configured to be detachably mounted on the hub shaft 234 as an integrated unit. That is, the plurality of yoke plates 48 and the connecting member 358 constitute the yoke assembly 66.

[0205] As Figure 42 and Figure 43 shown, the plurality of yoke plates 48 are respectively fixed to the connecting member 358 by at least one of welding, adhesion, and fitting. The plurality of yoke plates 48 are respectively fixed to the cylindrical portion 258A by at least one of welding, adhesion, and fitting. The plurality of yoke plates 48 are respectively fixed to the flange 358B by at least one of welding, adhesion, and fitting. In the present embodiment, the plurality of yoke plates 48 are respectively fixed to the connecting member 358 by welding. The plurality of yoke plates 48 are respectively fixed to the cylindrical portion 258A by welding. The plurality of yoke plates 48 are respectively fixed to the flange 358B by welding. However, the plurality of yoke plates 48 may also be respectively fixed to the connecting member 358 by any one of (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion and fitting. The plurality of yoke plates 48 may also be respectively fixed to the cylindrical portion 258A by any one of (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion and fitting. The plurality of yoke plates 48 may also be respectively fixed to the flange 358B by any one of (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion and fitting.

[0206] The fixing portion 48B is fixed to the connecting member 358. In the present embodiment, the fixing portion 48B of the yoke plate 48 is fixed to the connecting member 358 by welding. The fixing portion 48B of the yoke plate 48 is fixed to the cylindrical portion 258A and the flange 358B by welding. The first fixing portion 48E is fixed to the cylindrical portion 258A by welding. The second fixing portion 48F is fixed to the flange 358B by welding. That is, the yoke assembly 66 includes a plurality of welding portions 68 and a plurality of welding portions 70. However, the fixing portion 48B of the yoke plate 48 may also be fixed to the connecting member 358 (the cylindrical portion 258A and / or the flange 358B) by any one of the following methods: (1) adhesion, (2) fitting, (3) welding and adhesion, (4) adhesion and fitting, (5) welding and fitting, and (6) welding, adhesion and fitting.

[0207] As Figure 44 shown, the connecting member 356 includes at least one protruding portion 356D that protrudes radially inward from the cylindrical portion 256A. In the present embodiment, the connecting member 356 includes a plurality of protruding portions 356D that protrude radially inward from the cylindrical portion 256A. The plurality of protruding portions 356D are configured to position the plurality of yoke plates 46 relative to the hub shaft 234 in the circumferential direction D2. The flange 356B includes a plurality of holes 256F. The protrusion 56E of the first embodiment is omitted from the connecting member 356. At least one of the plurality of holes 256F may also be omitted from the connecting member 356.

[0208] The connecting member 358 has the same shape as the connecting member 356, so the description of the connecting member 358 is omitted. The connecting member 358 may also have a shape different from that of the connecting member 356.

[0209] As Figure 40 shown, the protruding portion 356D of the connecting member 356 restricts the rotation of the plurality of yoke plates 46 and the connecting member 356 relative to the hub shaft 234 by means of the plurality of protruding portions 356D.

[0210] As Figure 42 shown, the protruding portion 358D of the connecting member 358 restricts the rotation of the plurality of yoke plates 48 and the connecting member 358 relative to the hub shaft 234 by means of the plurality of protruding portions 358D.

[0211] As Figure 45As shown, the connecting member 356 is at least partially disposed between the plurality of yoke plates 46 and the axis A1 in the radial direction D3 of the axis A1. The connecting member 356 is at least partially disposed between the plurality of yoke plates 46 and the hub shaft 234 in the radial direction D3 of the axis A1. In the present embodiment, the connecting member 356 is partially disposed between the plurality of yoke plates 46 and the axis A1 in the radial direction D3. The connecting member 356 is partially disposed between the plurality of yoke plates 46 and the hub shaft 234 in the radial direction D3. The cylindrical portion 256A of the connecting member 356 is entirely disposed between the plurality of yoke plates 46 and the hub shaft 234 in the radial direction D3 of the axis A1. However, the connecting member 356 may also be entirely disposed between the plurality of yoke plates 46 and the axis A1 in the radial direction D3. The connecting member 356 may also be entirely disposed between the plurality of yoke plates 46 and the hub shaft 234 in the radial direction D3. The cylindrical portion 256A of the connecting member 356 may also be partially disposed between the plurality of yoke plates 46 and the hub shaft 234 in the radial direction D3.

[0212] As Figure 46 As shown, the connecting member 358 is at least partially disposed between the plurality of yoke plates 48 and the axis A1 in the radial direction D3 of the axis A1. The connecting member 358 is at least partially disposed between the plurality of yoke plates 48 and the hub shaft 234 in the radial direction D3 of the axis A1. In the present embodiment, the connecting member 358 is partially disposed between the plurality of yoke plates 48 and the axis A1 in the radial direction D3. The connecting member 358 is partially disposed between the plurality of yoke plates 48 and the hub shaft 234 in the radial direction D3. The cylindrical portion 258A of the connecting member 358 is entirely disposed between the plurality of yoke plates 48 and the hub shaft 234 in the radial direction D3 of the axis A1. However, the connecting member 358 may also be entirely disposed between the plurality of yoke plates 48 and the axis A1 in the radial direction D3. The connecting member 358 may also be entirely disposed between the plurality of yoke plates 48 and the hub shaft 234 in the radial direction D3. The cylindrical portion 258A of the connecting member 358 may also be partially disposed between the plurality of yoke plates 48 and the hub shaft 234 in the radial direction D3.

[0213] The connecting member 356 and the connecting member 358 are clamped between the lock nut 50 and the lock nut 255 in the axial direction D1. The flanges 356B and 358B are clamped between the plurality of yoke plates 46 and the plurality of yoke plates 48 in the axial direction D1. The plurality of yoke plates 46 and the lock nut 255 are spaced apart in the axial direction D1. The plurality of yoke plates 48 and the lock nut 50 are spaced apart in the axial direction D1.

[0214] The stator 312 of the generator 10 of the human - powered vehicle 2 is manufactured by Figure 47 the manufacturing method shown. As Figure 47 shown, the manufacturing method of the stator 312 is partially different from the manufacturing method of the stator 12 in the order of processes. AsFigure 48 and Figure 49 As shown in Figure 49 , the jig used in the manufacturing method of the stator 312 has substantially the same structure as the jigs 80 and 90 of the first and second embodiments.

[0215] As Figure 47 shown in Figure 47 , the manufacturing method of the stator 312 of the generator 10 of the human-powered vehicle 2 includes a connecting member arranging step S31 of arranging a connecting member 356 on the jig 80. As Figure 48 and Figure 49 shown in Figure 49 , in the connecting member arranging step S31, the connecting member 356 is arranged on the jig 80 such that the axis A1 of the connecting member 356 substantially coincides with the reference axis A8. More specifically, a plurality of protrusions 356D of the connecting member 356 are inserted into a plurality of additional positioning grooves 88C.

[0216] As Figure 47 shown in Figure 47 , the manufacturing method of the stator 312 of the generator 10 of the human-powered vehicle 2 includes a yoke arranging step S32, in which a plurality of yoke sheets 46 are arranged around the reference axis A8 as independent members and the plurality of yoke sheets 46 are mounted on the jig 80. As Figure 48 and Figure 49 shown in Figure 49 , in the yoke arranging step S32, the plurality of yoke sheets 46 are inserted into a plurality of positioning grooves 86B. Therefore, the plurality of yoke sheets 46 can be arranged at a specified angle with respect to the connecting member 356.

[0217] As Figure 47 shown in Figure 47 , the manufacturing method of the stator 312 of the generator 10 of the human-powered vehicle 2 includes a fixing step S3 of fixing the plurality of yoke sheets 46 to the connecting member 356 respectively. Figure 48 and Figure 49 shown in Figure 49 , in the fixing step S3, the plurality of yoke sheets 46 are respectively fixed to the cylindrical portion 256A (S3A) of the connecting member 356 by welding. Figure 41 As shown in Figure 41 , in the fixing step S3, the plurality of yoke sheets 46 fixed to the connecting member 356 are removed from the jig 80 (S3B). In the fixing step S3, the plurality of yoke sheets 46 removed from the jig 80 are further fixed to the connecting member 356 by welding (S3C). More specifically, a plurality of fixing portions 46B of the plurality of yoke sheets 46 are fixed to the flange 356B of the connecting member 356 by welding. However, the step S3C of fixing the plurality of yoke sheets 46 removed from the jig 80 to the connecting member 356 by welding can be omitted from the fixing step S3.

[0218] As Figure 47As shown, similar to the connecting member 356 and the plurality of yoke plates 46, the plurality of yoke plates 48 are fixed to the connecting member 358 through the connecting member arranging step S34, the yoke arranging step S35, and the fixing step S6, respectively. The connecting member arranging step S34, the yoke arranging step S35, and the fixing step S6 are substantially the same as the connecting member arranging step S31, the yoke arranging step S32, and the fixing step S3. Therefore, the detailed description of the connecting member arranging step S34, the yoke arranging step S35, and the fixing step S6 is omitted.

[0219] As Figure 47 shown, the method for manufacturing the stator 312 further includes an installing step S37 of installing the plurality of yoke plates 46 (i.e., the yoke assembly 60) connected by the connecting member 356 to the hub shaft 234. More specifically, in the installing step S37, before installing the connecting member 356 and the plurality of yoke plates 46 on the hub shaft 234, a lock nut 255 is installed on the hub shaft 234 (S37A). Similar to the installing step S7 of the first embodiment, in the installing step S37, the yoke assembly 60 and the yoke assembly 66 are installed on the coil 30 and the spool 32 (S7B, S7C). In the installing step S37, the coil unit composed of the yoke assembly 60, the yoke assembly 66, the coil 30, and the spool 32 is installed on the hub shaft 234 (S7D). In the installing step S37, a lock nut 50 is installed on the hub shaft 234 (S7E). By screwing the lock nut 50 into the threaded portion 34C, the connecting member 356, the plurality of yoke plates 46, the spool 32, the plurality of yoke plates 48, and the connecting member 358 are clamped between the lock nut 50 and the lock nut 255. It should be noted that the assembling order of the coil 30, the spool 32, the yoke assembly 60, and the yoke assembly 66 is not limited to the above order. For example, at least two of the yoke assembly 60, the yoke assembly 66, and the spool 32 may be respectively installed on the hub shaft 234.

[0220] (Modification example)

[0221] (1) In the first, second, and third embodiments, the welded portion 62 is formed by fillet welding. However, as Figure 50 shown, the welded portion 62 may also be formed by butt welding. As Figure 51 shown, the welded portion 62 may also be formed by penetration welding. As Figure 52 shown, the welded portion 62 may also be formed inside the hole 56F. The same applies to the welded portion 64, the welded portion 68, and the welded portion 70 of the first, second, and third embodiments.

[0222] (2) As Figure 53As shown, in the first embodiment, the cylindrical portion 56A may also be omitted from the connecting member 56. As Figure 54 shown, in the first embodiment, the flange 56B may also be omitted from the connecting member 56.

[0223] (3) In the first embodiment, when fixing the plurality of magnetic yoke sheets 46 to the connecting member 56 by adhesion respectively, for example, before installing the connecting member 56 on the jig 80 in the connecting member arrangement step S2 of the manufacturing method shown in Figure 16 shown, an operation of applying an adhesive to at least one of the connecting member 56 and the plurality of magnetic yoke sheets 46 is added. As a part of the fixing operation, the operation of installing the connecting member 56 on the jig 80 and the connecting member arrangement step S2 together become a part of the fixing operation. At this time, the fixing step S3 is omitted. The same applies to the fixing step S6. In addition, in the second and third embodiments, when the fixing method is adhesion, the steps of the manufacturing method may be appropriately changed in the same manner.

[0224] (4) In the first embodiment, when fixing the plurality of magnetic yoke sheets 46 to the connecting member 56 by fitting respectively, for example, in Figure 16 shown, if the connecting member 56 is installed on the jig 80 in the connecting member arrangement step S2 of the manufacturing method shown, the plurality of magnetic yoke sheets 46 are fitted into the plurality of grooves provided in the connecting member 56, and the plurality of magnetic yoke sheets 46 are respectively fixed to the connecting member 56. At this time, the connecting member arrangement step S2 and the fixing step S3 may be combined into one step. At this time, the fixing step S3 is omitted. The same applies to the fixing step S6. In addition, in the second and third embodiments, when the fixing method is fitting, the steps of the manufacturing method may be appropriately changed in the same manner.

[0225] In this application, "comprising" and its derivatives are non - restrictive terms used to describe the existence of components, and do not exclude the existence of other components not described. This also applies to "having", "including" and their derivatives.

[0226] Expressions such as "~ member", "~ part", "~ element", "~ body", and "~ structure" have multiple meanings and can be a single part or multiple parts.

[0227] Ordinal numbers such as "first", "second", etc. are only terms used to identify structures and do not have other meanings (for example, a specific order, etc.). For example, the existence of a "first element" does not mean the existence of a "second element", and the existence of a "second element" does not mean the existence of a "first element".

[0228] The term "a pair" used herein includes not only the case where a pair of elements have the same shape and structure, but also the case where a pair of elements have different shapes and structures.

[0229] As used in this specification, the expression "at least one" means that the desired option is "more than one". As an example, when the number of options is two, the expression "at least one" used in this specification means "only one option" or "both of the two options". As other examples, when the number of options is more than three, the expression "at least one" used in this specification means "only one option" or "any combination of two or more options". For example, "at least one of A and B" includes (1) only A, (2) only B, and (3) both A and B. "At least one of A, B, and C" includes (1) only A, (2) only B, (3) only C, (4) both A and B, (5) both B and C, (6) both A and C, and (7) A, B, and C. In other words, in this disclosure, "at least one of A and B" does not mean "at least one A and at least one B".

[0230] Expressions such as "substantially", "about", and "approximately" indicating degree mean a reasonable deviation that does not significantly change the final result. All numerical values recited in this application can be interpreted as including "substantially", "about", and "approximately", etc.

[0231] Obviously, various changes and modifications can be made to the present invention based on the above disclosure. Therefore, within the scope of not departing from the gist of the present invention, the present invention can also be implemented by other methods different from the specific disclosure of this application.

[0232] Symbol description:

[0233] 2 Human-powered vehicle;

[0234] 10, 210, 310 Generator;

[0235] 12, 212, 312 Stator;

[0236] 14 Rotating body;

[0237] 16 Rotor;

[0238] 18 Magnet;

[0239] 30 Coil;

[0240] 32 Spool;

[0241] 32A Support hole;

[0242] 34 Hub shaft;

[0243] 46 Yoke plate;

[0244] 46A Yoke body;

[0245] 46B Fixing part;

[0246] 46E First fixing part;

[0247] 46F Second fixing part;

[0248] 48 Yoke plate;

[0249] 48A Yoke main body;

[0250] 48B Fixing part;

[0251] 48E First fixing part;

[0252] 48F Second fixing part;

[0253] 56, 256, 356 Connecting parts;

[0254] 56A Cylindrical part;

[0255] 56B Flange;

[0256] 56C Through hole;

[0257] 56D Protruding part;

[0258] 58, 258, 358 Connecting parts;

[0259] 58A Cylindrical part;

[0260] 58B Flange;

[0261] 58C Through hole;

[0262] 58D Protruding part;

[0263] 80, 90 Jigs;

[0264] S1, S4, S32, S35 Yoke arrangement process;

[0265] S2, S5, S31, S34 Connecting part arrangement process;

[0266] S3, S6 Fixing process;

[0267] S7, S37 Installation process.

Claims

1. A stator, which is the stator of a generator of a human-powered vehicle, and comprises: A coil wound around an axis; A plurality of yoke plates, including a plurality of first yoke plates and a plurality of second yoke plates, the plurality of first yoke plates and the plurality of second yoke plates being arranged and configured circumferentially around the axis; Connecting members, including a first connecting member and a second connecting member, the first connecting member and the second connecting member being configured as components independent of the plurality of first yoke plates and the plurality of second yoke plates; and A bobbin, which is configured as a component independent of the plurality of yoke plates and the connecting members, and the coil is wound around the bobbin, The plurality of first yoke plates are fixed to the first connecting member, and the plurality of first yoke plates and the first connecting member form a first yoke assembly, The plurality of second yoke plates are fixed to the second connecting member, and the plurality of second yoke plates and the second connecting member form a second yoke assembly, The first connecting member is arranged to be farther from the bobbin than the plurality of first yoke plates in the direction along the axis, The second connecting member is arranged to be farther from the bobbin than the plurality of second yoke plates in the direction along the axis.

2. The stator according to claim 1, wherein The plurality of yoke plates are respectively fixed to the connecting members by at least one of welding, bonding, and fitting.

3. The stator according to claim 1 or 2, wherein The connecting members extend in the circumferential direction.

4. The stator according to any one of claims 1 to 3, wherein The connecting members are annular.

5. The stator according to any one of claims 1 to 4, wherein The connecting members are at least partially arranged between the plurality of yoke plates and the axis in the radial direction of the axis.

6. The stator according to any one of claims 1 to 5, wherein The connecting members include a cylindrical portion extending along the axis.

7. The stator according to claim 6, wherein The plurality of yoke plates are respectively fixed to the cylindrical portion by at least one of welding, bonding, and fitting.

8. The stator according to claim 6 or 7, wherein The connecting members include a flange extending outward from the cylindrical portion in the radial direction of the axis.

9. The stator according to claim 8, wherein The plurality of yoke plates are respectively fixed to the flange by at least one of welding, bonding, and fitting.

10. The stator according to any one of claims 1 to 9, wherein The plurality of yoke plates respectively include: A yoke body configured to face the coil in the radial direction of the axis; and A fixing portion extending from the yoke body toward the axis in the radial direction and fixed to the connecting member.

11. The stator according to claim 10, The bobbin includes a support hole extending along the axis, The fixing portion is at least partially arranged in the support hole.

12. The stator according to any one of claims 1 to 11, further comprising A hub shaft for supporting the coil and the plurality of yoke plates, The connecting member is disposed at least partially between the plurality of yoke plates and the hub shaft in the radial direction of the axis.

13. The stator according to any one of claims 1 to 12, wherein the first connecting member and the second connecting member include a plurality of protrusions protruding in the axial direction of the axis, and the plurality of protrusions are disposed between two circumferentially adjacent yoke plates.

14. A generator, which is a generator of a human-powered vehicle and includes: the stator according to any one of claims 1 to 13; a rotating body that is arranged to be rotatable relative to the stator about the axis; a rotor that is disposed on the rotating body and includes magnets, and a hub shaft that supports the coil and the plurality of yoke plates, the first connecting member includes a plurality of protruding portions protruding radially inward, and the plurality of protruding portions are configured to position the plurality of yoke plates relative to the hub shaft in the circumferential direction of the axis, the second connecting member includes a plurality of protruding portions protruding radially inward, and the plurality of protruding portions are configured to position the plurality of yoke plates relative to the hub shaft in the circumferential direction of the axis.

15. A generator, which is a generator of a human-powered vehicle and includes: the stator according to any one of claims 1 to 13; a rotating body that is arranged to be rotatable relative to the stator about the axis; and a rotor that is disposed on the rotating body and includes magnets.

16. A method for manufacturing a stator of a generator of a human-powered vehicle, which includes: a yoke arranging step of mounting the plurality of yoke plates on a jig in such a manner that the plurality of yoke plates, which are independent components, are arranged around a reference axis, the plurality of yoke plates including a plurality of first yoke plates and a plurality of second yoke plates, and the plurality of first yoke plates and the plurality of second yoke plates are respectively arranged and disposed in the circumferential direction of the axis; a connecting member arranging step of mounting a connecting member on the jig, the connecting member including a first connecting member and a second connecting member, and the first connecting member and the second connecting member being configured as components independent of the plurality of first yoke plates and the plurality of second yoke plates; and a fixing step of fixing the plurality of first yoke plates to the first connecting member, the plurality of first yoke plates and the first connecting member constituting a first yoke assembly, and fixing the plurality of second yoke plates to the second connecting member, the plurality of second yoke plates and the second connecting member constituting a second yoke assembly, wherein the first connecting member is arranged to be farther from the spool than the plurality of first yoke plates in the direction along the reference axis, the spool being configured as a component independent of the plurality of yoke plates and the connecting member, and a coil is wound around the spool, the second connecting member is arranged to be farther from the spool than the plurality of second yoke plates in the direction along the reference axis.

17. The manufacturing method according to claim 16, wherein it further includes a mounting step of mounting the plurality of yoke plates connected by the connecting member on a hub shaft.

18. A stator, which is a stator of a generator of a human-powered vehicle, and manufactured by the manufacturing method according to claim 16 or 17.

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