Component for man-powered drive vehicle and gear

Abstract

To provide a component for a man-powered drive vehicle and a gear that are able to suppress a reduction in life.SOLUTION: A component for a man-powered drive vehicle includes a housing, and a mounting portion provided on the housing and configured to be attached to a support portion of the man-powered drive vehicle by a fastener; wherein the mounting portion includes: a metal base portion; metal coupling portion provided on the base portion and configured to be coupled to the fastener; and an intermediate portion provided between the coupling portion and the base portion; wherein the base portion includes a first material having a first standard electrode potential; wherein the coupling portion includes a second material having a second standard electrode potential; and wherein the intermediate portion has a third standard electrode potential and is formed of a third material in which a difference between the third standard electrode potential and the first standard electrode potential and the difference between the third standard electrode potential and the second standard electrode potential are each smaller than a difference between the first standard electrode potential and the second standard electrode potential or formed of a fourth material having an electric insulating property.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to components for human-powered vehicles. [Background technology]

[0002] For example, the components for a human-powered vehicle disclosed in Patent Document 1 include a housing. For example, the components for a human-powered vehicle disclosed in Patent Document 1 include a gear. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-24700 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a component for a human-powered vehicle that can suppress deterioration of its lifespan. [Means for solving the problem]

[0005] A component according to a first aspect of the present disclosure is a component for a human-powered vehicle, comprising: a housing; and an attachment portion provided on the housing and configured to be attached to a support portion of the human-powered vehicle by a fastener, the attachment portion comprising a metallic base portion, a metallic connecting portion provided on the base portion and configured to connect to the fastener, and an intermediate portion provided between the connecting portion and the base portion, wherein the base portion comprises a first material having a first standard electrode potential, the connecting portion comprises a second material having a second standard electrode potential, and the intermediate portion is formed of a third material having a third standard electrode potential, wherein a difference between the third standard electrode potential and the first standard electrode potential and a difference between the third standard electrode potential and the second standard electrode potential are respectively smaller than a difference between the first standard electrode potential and the second standard electrode potential, or a fourth material having electrical insulation properties.

[0006] According to the component of the first aspect, the intermediate portion including the third material or the fourth material makes it difficult for galvanic corrosion to occur due to the material of at least one of the fastener and the support portion of the human-powered vehicle being different from the material of the metallic base portion, thereby suppressing a decrease in the life span of the component.

[0007] In a second aspect of the component according to the first aspect of the present disclosure, the first standard electrode potential is different from the second standard electrode potential. According to the component of the second aspect, the material of the base portion and the material of the connecting portion can be made different.

[0008] In the component according to the third aspect of the first or second aspect of the present disclosure, the intermediate portion is non-detachably attached to the connecting portion. According to the component of the third aspect, the intermediate portion can be non-detachably provided to the connecting portion.

[0009] In the component of a fourth aspect according to any one of the first to third aspects of the present disclosure, the intermediate portion is formed by the fourth material, and the fourth material includes a metal oxide. According to the component of the fourth aspect, the intermediate portion can be suitably formed of a metal oxide.

[0010] In the component of the fifth aspect according to the fourth aspect of the present disclosure, the second material comprises an aluminum alloy and the metal oxide comprises aluminum oxide. According to the component of the fifth aspect, the intermediate portion can be suitably formed of aluminum oxide.

[0011] In the component of the sixth aspect according to the fourth or fifth aspect of the present disclosure, the thickness of the intermediate portion is not less than 1 micrometer and not more than 30 micrometers. According to the component of the sixth aspect, a middle portion having a thickness of 1 micrometer or more and 30 micrometers or less can be provided.

[0012] In the component of the seventh aspect according to the first or second aspect of the present disclosure, the intermediate portion is formed by a separate member from the connecting portion. According to the seventh aspect component, the middle section can be constructed from the most suitable material.

[0013] In the component of the eighth aspect according to the seventh aspect of the present disclosure, the intermediate portion is detachably provided to the connecting portion, and a bonding force between the intermediate portion and the base portion is greater than a bonding force between the intermediate portion and the connecting portion.

[0014] According to the component of the eighth aspect, the bonding force between the intermediate portion and the base portion can be made greater than the bonding force between the intermediate portion and the connecting portion. Therefore, when a force is applied to move the connecting portion when connecting the fastener to the connecting portion, the connecting portion can be moved without the intermediate portion moving relative to the mounting portion. By moving the connecting portion, it is possible to suppress the occurrence of rattle when the mounting portion is attached to the support portion of a human-powered vehicle. Because the intermediate portion does not move relative to the mounting portion, the electrical characteristics of the intermediate portion and the mounting portion are stable.

[0015] In the component of the ninth aspect according to any one of the first to eighth aspects of the present disclosure, the connecting portion and the intermediate portion are non-detachably provided to the base portion. According to the component of the ninth aspect, the connecting portion and the intermediate portion do not move relative to the base portion, so that the electrical characteristics of the connecting portion, the intermediate portion and the mounting portion are stable.

[0016] In the component of a tenth aspect according to any one of the first to third and seventh to ninth aspects of the present disclosure, the middle portion includes rubber or resin. According to the component of the tenth aspect, the intermediate portion can be suitably formed from rubber or resin.

[0017] In the component of an eleventh aspect according to any one of the first to ninth aspects of the present disclosure, the base portion has a hole, and at least a portion of the connecting portion and at least a portion of the intermediate portion are disposed in the hole.

[0018] According to the component of the eleventh aspect, at least a portion of the connecting portion and at least a portion of the intermediate portion can be disposed in the hole of the base portion. In the component of the twelfth aspect according to the eleventh aspect of the present disclosure, the intermediate portion is press-fit into the hole.

[0019] According to the component of the twelfth aspect, the intermediate portion can be connected to the base portion by pressing the intermediate portion into the hole. In the component of the thirteenth aspect according to the eleventh or twelfth aspect of the present disclosure, at least a portion of the connecting portion is formed in a cylindrical shape, and at least a portion of the intermediate portion covers at least a portion of an outer circumferential surface of at least a portion of the connecting portion.

[0020] According to the component of the thirteenth aspect, at least a portion of the intermediate portion covers at least a portion of the outer circumferential surface of at least a portion of the connecting portion, so that the outer circumferential surface of at least a portion of the connecting portion is not exposed.

[0021] In the component of the fourteenth aspect according to the thirteenth aspect of the present disclosure, at least a portion of the intermediate portion is formed cylindrically, and at least one of a knurling that contacts the base portion and a protrusion that contacts the base portion is formed on an outer periphery of at least a portion of the intermediate portion.

[0022] According to the component of the fourteenth aspect, the relative movement between the intermediate portion and the base portion can be restricted by at least one of the knurling and the protrusion. In the component of the fifteenth aspect according to the fourteenth aspect of the present disclosure, at least one of the knurling contacting the base portion and the protrusion contacting the base portion is provided at a position away from the opening of the hole.

[0023] According to the component of the fifteenth aspect, the load applied to the portion of the mounting portion near the opening of the hole can be suppressed. In the component of the sixteenth aspect according to the fourteenth or fifteenth aspects of the present disclosure, at least one of the knurls and the protrusions has a first contact portion and a second contact portion, the first contact portion and the second contact portion being spaced apart in the extension direction of the hole.

[0024] According to the component of the sixteenth aspect, the intermediate portion is brought into contact with the base portion at a plurality of positions in the extending direction of the hole, so that the intermediate portion is stably attached to the base portion. In the component of the seventeenth aspect according to any one of the eleventh to sixteenth aspects of the present disclosure, the middle portion is adhered to the base portion by adhesive provided in the hole.

[0025] The component of the seventeenth aspect improves the bonding strength of the intermediate portion to the base portion. In the component of the eighteenth aspect according to the sixteenth aspect of the present disclosure, the intermediate portion is adhered to the base portion by adhesive provided in the hole, at least a portion of the adhesive being provided between the first contact portion and the second contact portion.

[0026] According to the component of the eighteenth aspect, by disposing at least a portion of the adhesive between the first contact portion and the second contact portion, it is possible to suppress outflow of the adhesive to the outside of the hole during manufacturing.

[0027] In the component of the nineteenth aspect according to any one of the thirteenth to eighteenth aspects of the present disclosure, a knurl is formed on an outer periphery of at least a part of the connecting portion, the knurl being in contact with the middle portion.

[0028] According to the component of the nineteenth aspect, the knurling formed on at least a part of the outer periphery of the connecting portion can restrict relative movement between the connecting portion and the intermediate portion at least in a predetermined direction.

[0029] In the component of aspect 20 according to any one of aspects 11 to 19 of the present disclosure, the connecting portion has a flange portion that is disposed between the base portion and the support portion when the mounting portion is attached to the support portion of the human-powered vehicle by the fastener, and has an outer diameter larger than the diameter of the hole.

[0030] According to the component of the twentieth aspect, the flange portion can be disposed outside the hole and disposed between the base portion and the support portion of the human-powered vehicle. In a component of aspect 21 according to any one of aspects 11 to 20 of the present disclosure, the base portion includes a first female threaded portion forming the hole, and the intermediate portion includes at least a portion of a male threaded portion configured to couple with the first female threaded portion.

[0031] According to the component of the 21st aspect, the base portion and the intermediate portion can be joined by joining the first female thread portion of the base portion and the male thread portion of the intermediate portion. According to the component of the 21st aspect, the base portion and the intermediate portion are screw-joined, so that the relative positions of the base portion and the intermediate portion can be easily adjusted.

[0032] In the component of the twenty-second aspect according to any one of the eleventh to twenty-first aspects of the present disclosure, the coupling portion includes a second female threaded portion configured to couple to the fastener. According to the component of the twenty-second aspect, the fastener and the connecting portion can be connected by the second female thread portion.

[0033] In the component of the 23rd aspect according to the 21st aspect of the present disclosure, the connection portion includes a second female thread portion configured to connect to the fastener, and one of the first female thread portion and the second female thread portion is a right-handed thread and the other of the first female thread portion and the second female thread portion is a left-handed thread.

[0034] According to the component of the twenty-third aspect, when the second female threaded portion is coupled to a fastener, loosening of the connection between the first female threaded portion and the male threaded portion can be suppressed. In the component of the twenty-fourth aspect according to the twenty-second or twenty-third aspect of the present disclosure, the coupling portion includes a tool engagement portion configured to engage a tool.

[0035] According to the component of the twenty-fourth aspect, the relative position of the intermediate portion with respect to the base portion can be easily adjusted by engaging a tool with the tool engagement portion and operating the tool. In the component of the twenty-fifth aspect according to any one of the first to twenty-fourth aspects of the present disclosure, at least a portion of the housing is integrally formed with the base as a single member.

[0036] According to the component of the twenty-fifth aspect, the number of parts constituting the component can be reduced. In the component of aspect 26 according to any one of aspects 11 to 24 of the present disclosure, the base portion includes a first base portion and a second base portion provided in the first base portion and defining a hole, the second base portion including a different material than the first base portion.

[0037] According to the component of the twenty-sixth aspect, the first base portion and the second base portion can each be formed from a suitable material. In the component of the twenty-seventh aspect according to the twenty-sixth aspect of the present disclosure, at least a portion of the housing is integrally formed with the first base portion as a unitary member.

[0038] According to the component of the twenty-seventh aspect, the first base portion can be integrally formed with at least a part of the housing, thereby reducing the number of parts. In the component of the twenty-eighth aspect according to any one of the first to twenty-seventh aspects of the present disclosure, the base portion includes a magnesium alloy.

[0039] The component of the 28th aspect can contribute to reducing the weight of the housing. A component according to a twenty-ninth aspect of the present disclosure is a component for a human-powered vehicle, comprising: a housing including a first housing portion and a second housing portion forming an accommodating space together with the first housing portion; positioning portions provided on each of the first housing portion and the second housing portion and configured to position the relative positions of the first housing portion and the second housing portion; and an insulating portion provided between the first housing portion and the second housing portion for electrically insulating the first housing portion and the second housing portion, wherein the first housing portion and the second housing portion are electrically connected at the positioning portions.

[0040] According to the component of the twenty-ninth aspect, the first housing portion and the second housing portion can be suitably electrically connected to each other, so that a potential difference is unlikely to occur between the first housing portion and the second housing portion, and a decrease in the life span of the component can be suppressed.

[0041] The component of the 30th aspect according to the 29th aspect of the present disclosure further includes a conductive portion provided on the positioning portion and electrically connecting the first housing portion and the second housing portion.

[0042] According to the component of the thirtieth aspect, the first housing part and the second housing part can be suitably electrically connected by the conductive part. In the component of a thirty-first aspect according to a thirtieth aspect of the present disclosure, the conductive portion includes conductive grease.

[0043] According to the component of the thirty-first aspect, the first housing part and the second housing part can be suitably electrically connected by the conductive grease. In the component of the thirty-second aspect according to any one of the twenty-ninth to thirty-first aspects of the present disclosure, the first housing portion and the second housing portion include a magnesium alloy.

[0044] The component of the 32nd aspect can contribute to reducing the weight of the housing. In a component of a 33rd aspect according to any one of the 29th to 32nd aspects of the present disclosure, the positioning portion includes a first convex portion provided on one of the first housing portion and the second housing portion, and a first recess provided on the other of the first housing portion and the second housing portion, in which at least a portion of the first convex portion is disposed.

[0045] According to the component of the thirty-third aspect, positioning can be easily achieved by fitting the first protrusion into the first recess. The component of the thirty-fourth aspect according to any one of the first to thirty-third aspects of the present disclosure, further comprising a motor at least partially contained within the housing.

[0046] According to the component of the thirty-fourth aspect, shortening of the life span of a component including a motor can be suppressed. A component according to a thirty-fifth aspect of the present disclosure is a component for a human-powered vehicle, comprising: a housing; a motor at least partially contained in the housing; a cover attached to the housing; and an electrical connector having a connection terminal exposed in a space formed by the housing and the cover, the cover including a rib configured to suppress deformation of the space by contacting the housing.

[0047] According to the component of the 35th aspect, spatial deformation is suppressed and load is less likely to be applied to the electrical connector, thereby suppressing a decrease in its lifespan. In the component of the thirty-sixth aspect according to the thirty-fifth aspect of the present disclosure, the rib includes a plurality of ribs having different minimum distances between the rib and the housing.

[0048] According to the component of the 36th aspect, the plurality of ribs having different minimum distances can suitably suppress spatial deformation. In the component of the thirty-seventh aspect according to the thirty-sixth aspect of the present disclosure, the plurality of ribs includes at least one first rib extending in a first direction and at least one second rib extending in a second direction different from the first direction.

[0049] According to the component of the thirty-seventh aspect, the first rib and the second rib can suitably suppress deformation of the space. In the component of the thirty-eighth aspect according to any one of the thirty-fifth to thirty-seventh aspects of the present disclosure, the housing includes a metal material and the cover includes a resin material.

[0050] According to the component of the thirty-eighth aspect, in a component including a cover made of a resin material, deformation of the space can be suitably suppressed. A component according to a thirty-ninth aspect of the present disclosure is a component for a human-powered vehicle, comprising: a housing; a motor provided in the housing; and a reducer coupled to the motor, the reducer including a plurality of gears, and a tooth portion of at least one of the plurality of gears comprising a thermosetting resin.

[0051] According to the component of the thirty-ninth aspect, at least one of the gears included in the reduction gear has teeth that contain a thermosetting resin, so that deterioration of the gear due to heat can be suppressed, thereby suppressing a decrease in the gear's lifespan.

[0052] In a component of a fortieth aspect according to a thirty-ninth aspect of the present disclosure, the motor includes an output shaft, and the plurality of gears include a first gear provided on the output shaft and a second gear meshing with the first gear, and a tooth portion of the second gear includes a thermosetting resin.

[0053] According to the component of the fortieth aspect, deterioration of the teeth of the second gear due to heat can be suppressed. In the component of a forty-first aspect according to the fortieth aspect of the present disclosure, the first gear is formed of metal.

[0054] According to the component of the forty-first aspect, the first gear, which has the highest rotation speed in the reducer, is made of metal, thereby making it possible to suppress a decrease in the life span of the reducer. In the component of the 42nd aspect according to the 40th or 41st aspect of the present disclosure, the second gear includes a shaft portion and a teeth portion that is configured separately from the shaft portion and is provided on the shaft portion so as to rotate integrally with the shaft portion.

[0055] According to the component of the forty-second aspect, the shaft portion and the teeth portion are formed separately, which makes it easy to manufacture the second gear. In the component of the forty-third aspect according to the forty-second aspect of the present disclosure, the shaft portion is formed of metal.

[0056] According to the component of the forty-third aspect, the strength of the shaft portion can be improved by forming the shaft portion from metal. In the component of the forty-fourth aspect according to the forty-second or forty-third aspect of the present disclosure, the tooth portion has a first connecting portion formed in an annular shape and connected to the shaft portion on an inner periphery thereof.

[0057] According to the component of the forty-fourth aspect, the tooth portion is connected to the shaft portion by the first connecting portion. In the component of the forty-fifth aspect according to the forty-fourth aspect of the present disclosure, the shaft portion has a second connecting portion on an outer periphery thereof, the second connecting portion being connected to the first connecting portion.

[0058] According to the component of the forty-fifth aspect, the shaft portion is connected to the first connecting portion by the second connecting portion. In the component of the forty-sixth aspect according to the forty-fifth aspect of the present disclosure, the first connecting portion includes a female threaded portion and the second connecting portion includes a male threaded portion.

[0059] According to the component of the forty-sixth aspect, the teeth portion and the shaft portion are connected by the female thread portion and the male thread portion. In the component of the 47th aspect according to the 46th aspect of the present disclosure, the first connecting portion includes a first portion having an inner diameter larger than the female threaded portion and not threaded, and the second connecting portion includes a second portion having an outer diameter larger than the male threaded portion and not threaded, facing closely to or in contact with the first portion.

[0060] According to the component of the forty-seventh aspect, the first portion and the second portion reduce misalignment between the rotation axis of the teeth portion and the rotation axis of the shaft portion during assembly. In the component of the 48th aspect according to the 46th or 47th aspect of the present disclosure, the motor is configured to provide propulsive force to the human-powered vehicle, and when the motor provides propulsive force to the human-powered vehicle, the motor is configured to rotate the second gear in a direction in which the first connection portion screws into the second connection portion.

[0061] According to the component of the 48th aspect, the first connecting portion and the second connecting portion are stably connected to each other. In the component of aspect 49 according to any one of aspects 42 to 48 of the present disclosure, the multiple gears include a third gear that rotates integrally with the second gear, and the third gear is integrally formed as a single member with a shaft portion of the second gear.

[0062] According to the component of the forty-ninth aspect, the third gear is integrally formed with the shaft portion of the second gear as a single member, thereby reducing the number of parts. The component of the 50th aspect according to the 49th aspect of the present disclosure includes a washer provided between the teeth portion and at least one of the shaft portion and the third gear in the axial direction of the shaft portion, the washer having an engagement portion that engages with the teeth portion and at least one of the shaft portion and the third gear.

[0063] According to the component of the fiftieth aspect, the washer can reduce stress generated between the first connecting portion and the second connecting portion. In the component of the 51st aspect according to any one of the 42nd to 50th aspects of the present disclosure, the shaft portion is formed by a hollow shaft.

[0064] According to the component of the fifty-first aspect, the shaft portion is formed by a hollow shaft, so that the shaft portion can be made lighter. In the component of the fifty-second aspect according to any one of the thirty-ninth to fifty-first aspects of the present disclosure, the thermosetting resin includes at least one of a polyaminoamide, a phenolic, and a polyimide.

[0065] According to the component of the fifty-second aspect, the teeth portion can be formed with high precision using a thermosetting resin containing at least one of polyaminoamide, phenol, and polyimide. In the component of the fifty-third aspect according to any one of the thirty-ninth to fifty-second aspects of the present disclosure, the tines include reinforcing fibers embedded in a thermosetting resin.

[0066] According to the component of the 53rd aspect, the strength of the teeth can be improved by reinforcing fibers. In the component of the fifty-fourth aspect according to the fifty-third aspect of the present disclosure, the reinforcing fibers include at least one of glass fibers, aramid fibers, and potassium titanate fibers.

[0067] According to the component of the fifty-fourth aspect, at least one of glass fiber, aramid fiber, and potassium titanate fiber can ensure appropriate strength for the teeth portion. The component of the 55th aspect according to any one of the 1st to 54th aspects of the present disclosure further includes a crankshaft provided in the housing.

[0068] According to the component of the fifty-fifth aspect, it is possible to suppress a decrease in the life span of components including the crankshaft. A gear according to a fifty-sixth aspect of the present disclosure includes a shaft portion formed of metal, and a tooth portion including a thermosetting resin and provided on an outer periphery of the shaft portion so as to rotate integrally with the shaft portion, the tooth portion being formed in an annular shape and having a first connecting portion on an inner periphery that is connected to the shaft portion, the shaft portion having a second connecting portion on an outer periphery that is connected to the first connecting portion, the first connecting portion including a female thread portion, and the second connecting portion including a male thread portion.

[0069] According to the gear of the 56th side, the teeth of the gear contain a thermosetting resin, so that a decrease in the lifespan can be suppressed. According to the gear of the 56th side, the teeth and the shaft are connected by the female thread portion and the male thread portion, so that the teeth can be stably fixed to the shaft.

[0070] In a gear of a 57th aspect according to the 56th aspect of the present disclosure, the first connecting portion includes a first portion having an inner diameter larger than the female threaded portion and not threaded, and the second connecting portion includes a second portion having an outer diameter larger than the male threaded portion and not threaded, facing closely to the first portion in the radial direction of the gear or contacting the first portion.

[0071] According to the gear of the fifty-seventh side surface, the first portion and the second portion reduce misalignment between the rotation axis of the tooth portion and the rotation axis of the shaft portion during assembly. Effect of the Invention

[0072] The components for human-powered vehicles disclosed herein can suppress deterioration of their life span. [Brief description of the drawings]

[0073] [Figure 1] FIG. 1 is a side view of a human-powered vehicle including components for a human-powered vehicle according to a first embodiment. [Diagram 2]FIG. 2 is an exploded perspective view of the components and frame support for the human-powered vehicle of FIG. 1; [Diagram 3] FIG. 2 is a first side view of the human-powered vehicle component of FIG. 1 . [Figure 4] FIG. 2 is a second side view of the human-powered vehicle component of FIG. 1 . [Diagram 5] FIG. 2 is a plan view of the human-powered vehicle component of FIG. 1. [Figure 6] 2 is an enlarged exploded perspective view showing a mounting portion of the human-powered vehicle component shown in FIG. 1; [Figure 7] 7 is an enlarged cross-sectional view showing the vicinity of the mounting portion of the component and the support portion of the frame in a state in which the mounting portion of the component for the human-powered vehicle shown in FIG. 6 is attached to the support portion of the frame with a fastener. FIG. [Figure 8] Cross-sectional view taken along line D5-D5 in Figure 3. [Figure 9] Cross-sectional view taken along line D9-D9 in Figure 3. [Figure 10] FIG. 2 is a perspective view of the human-powered vehicle component of FIG. 1; [Figure 11] 11 is an enlarged perspective view of the human-powered vehicle component of FIG. 10 with the cover removed. FIG. [Figure 12] FIG. 11 is a perspective view of the cover of FIG. 10 as viewed from the housing side. [Figure 13] 13 is a cross-sectional view taken along line D13-D13 in FIG. 10 . [Figure 14] FIG. 11 is an enlarged exploded perspective view showing a mounting portion of a component for a human-powered vehicle according to a second embodiment. [Figure 15] 15 is an enlarged cross-sectional view showing the vicinity of the mounting portion of the component and the support portion of the frame in a state in which the mounting portion of the component for the human-powered vehicle shown in FIG. 14 is attached to the support portion of the frame with a fastener. FIG. [Figure 16] 13 is an enlarged cross-sectional view showing the vicinity of a mounting portion of a component and a support portion of a frame in a state in which the mounting portion of the component for a human-powered vehicle of the third embodiment is attached to the support portion of the frame with a fastener. FIG. [Figure 17] 17 is a cross-sectional view of the state in which the connecting portion of FIG. 16 has been moved toward the head of the fastener. [Figure 18] 17 is a perspective view showing a connecting portion and an intermediate portion of the first attachment portion of FIG. 16. [Figure 19] 17 is a side view showing the intermediate portion of the first attachment part of FIG. 16. [Figure 20] 17 is a side view showing the coupling portion of the first attachment portion of FIG. 16. [Figure 21] 17 is a perspective view showing a connecting portion and an intermediate portion of the second attachment portion of FIG. 16. [Figure 22] 17 is a side view showing the intermediate portion of the second mounting portion of FIG. 16. [Diagram 23] 17 is a side view showing the coupling portion of the second attachment portion of FIG. 16. [Figure 24] FIG. 13 is a cross-sectional view of a component for a human-powered vehicle according to a fourth embodiment. [Diagram 25] 25 is a cross-sectional view of the second gear and the third gear of FIG. 24 . [Figure 26] FIG. 25 is a side view of the second gear and the third gear of FIG. 24 . [Figure 27] FIG. 26 is a perspective view of the washer of FIG. [Figure 28] Cross-sectional view taken along line D28-D28 in Figure 27. [Figure 29] FIG. 13 is a cross-sectional view of a second gear and a third gear according to a fifth embodiment. [Diagram 30] Cross-sectional view taken along line D30-D30 in Figure 29. [Diagram 31] FIG. 11 is a cross-sectional view of a mounting portion of a first modified example. [Diagram 32] FIG. 11 is a cross-sectional view of a mounting portion of a second modified example. [Diagram 33] FIG. 13 is a cross-sectional view of a mounting portion of a third modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0074] First Embodiment A component 40 for a human-powered vehicle according to a first embodiment will be described with reference to Figs. 1 to 13. The human-powered vehicle 10 is a vehicle that has at least one wheel and can be driven at least by human-powered driving force. The human-powered vehicle 10 includes various types of bicycles, such as mountain bikes, road bikes, city bikes, cargo bikes, hand bikes, and recumbents. The number of wheels that the human-powered vehicle 10 has is not limited. The human-powered vehicle 10 also includes, for example, one-wheeled vehicles and vehicles with three or more wheels. The human-powered vehicle 10 is not limited to vehicles that can be driven only by human-powered driving force. The human-powered vehicle 10 includes an e-bike that uses not only human-powered driving force but also the driving force of an electric motor for propulsion. The e-bike includes an electrically assisted bicycle whose propulsion is assisted by an electric motor. In the following embodiments, the human-powered vehicle 10 will be described as an electrically assisted bicycle.

[0075] The human-powered vehicle 10 includes a crank 12 to which a human-powered driving force is input. The human-powered vehicle 10 further includes wheels 14 and a vehicle body 16. The wheels 14 include a rear wheel 14A and a front wheel 14B. The vehicle body 16 includes a frame 18. The crank 12 includes an input rotating shaft 12A that is rotatable with respect to the frame 18, and a pair of crank arms 12B that are respectively provided at axial ends of the input rotating shaft 12A. In this embodiment, the input rotating shaft 12A is a crank shaft. A pair of pedals 20 are respectively connected to each crank arm 12B. The rear wheel 14A is driven by the rotation of the crank 12. The rear wheel 14A is supported by the frame 18. The crank 12 and the rear wheel 14A are connected by a drive mechanism 22. The drive mechanism 22 includes a first rotating member 24 that is connected to the input rotating shaft 12A. The input rotating shaft 12A and the first rotating member 24 may be connected to rotate integrally, or may be connected via a first one-way clutch 40X. The first one-way clutch 40X is configured to rotate the first rotating member 24 forward when the crank 12 rotates forward, and to allow relative rotation between the crank 12 and the first rotating member 24 when the crank 12 rotates backward. The first rotating member 24 includes a sprocket, a pulley, or a bevel gear. The drive mechanism 22 further includes a second rotating member 26 and a connecting member 28. The connecting member 28 transmits the rotational force of the first rotating member 24 to the second rotating member 26. The connecting member 28 includes, for example, a chain, a belt, or a shaft.

[0076] The second rotating member 26 is connected to the rear wheel 14A. The second rotating member 26 includes a sprocket, a pulley, or a bevel gear. A second one-way clutch is preferably provided between the second rotating member 26 and the rear wheel 14A. The second one-way clutch is configured to rotate the rear wheel 14A forward when the second rotating member 26 rotates forward, and to allow relative rotation between the second rotating member 26 and the rear wheel 14A when the second rotating member 26 rotates backward. In this embodiment, the first rotating member 24 includes only one sprocket, and the second rotating member 26 includes multiple sprockets, but the first rotating member 24 may include multiple sprockets, and the second rotating member 26 may include only one sprocket. When at least one of the first rotating member 24 and the second rotating member 26 includes multiple sprockets, the human-powered vehicle 10 further includes a derailleur that moves a chain between the multiple sprockets. In this embodiment, a rear derailleur 27 is provided on the frame 18 .

[0077] A front wheel 14B is attached to the frame 18 via a front fork 30. A handlebar 34 is connected to the front fork 30 via a stem 32. In this embodiment, the rear wheel 14A is connected to the crank 12 by the drive mechanism 22, but at least one of the rear wheel 14A and the front wheel 14B may be connected to the crank 12 by the drive mechanism 22.

[0078] The component 40 includes a housing 42 and an attachment portion 44. The attachment portion 44 is provided on the housing 42 and configured to be attached to a support portion 38 of the human-powered vehicle 10 by the fastener 36. The human-powered vehicle 10 further includes the support portion 38. The support portion 38 is provided on, for example, the frame 18. The support portion 38 may be formed integrally with the frame 18 as a single member, or may be formed separately from the frame 18 and attached to the frame 18. The support portion 38 may be a part of the frame 18. The support portion 38 is provided on, for example, a portion of the frame 18 where the down tube 18A and the seat tube 18B are connected.

[0079] Preferably, the component 40 includes a housing 42 and a motor 46 at least a portion of which is accommodated in the housing 42. Preferably, the motor 46 is configured to provide a propulsive force to the human-powered vehicle 10. The motor 46 includes one or more electric motors. The motor 46 is configured to transmit a rotational force to at least one of the first rotating member 24, the connecting member 28, and the rear wheel 14A. In this embodiment, the motor 46 is configured to transmit the rotation to the first rotating member 24. Preferably, the component 40 includes an input rotating shaft 12A. The input rotating shaft 12A is provided in the housing 42. The housing 42 is detachably attached to the support portion 38, for example. The motor 46 includes an output shaft 46A. The output shaft 46A of the motor 46 is supported by the housing 42 rotatably relative to the housing 42 via a pair of sixth bearings 41F. The sixth bearings 41F may be ball bearings, roller bearings, or plain bearings. The motor 46 is provided in the housing 42. The motor 46 may be entirely housed in the housing 42. A drive unit for a human-powered vehicle is configured by including the motor 46 and the housing 42. A third one-way clutch 40Y is preferably provided in the power transmission path between the motor 46 and the input rotating shaft 12A so as to suppress transmission of the rotational force of the input rotating shaft 12A to the motor 46 when the input rotating shaft 12A is rotated in the forward direction of the human-powered vehicle 10. The first one-way clutch 40X, the second one-way clutch, and the third one-way clutch 40Y each include one of a roller clutch, a pawl ratchet clutch, and a sprag clutch.

[0080] The component 40 further includes an output section 40A connected to the first rotating member 24. The first rotating member 24 is, for example, detachably attached to the output section 40A. In this embodiment, the input rotating shaft 12A is connected to the output section 40A via a first one-way clutch 40X. The input rotating shaft 12A may be connected to rotate integrally with the output section 40A in both directions around the rotation axis of the input rotating shaft 12A. The output section 40A has, for example, a substantially cylindrical shape and is arranged coaxially with the input rotating shaft 12A. The output section 40A is, for example, arranged parallel to the input rotating shaft 12A, but may not be arranged coaxially. The output section 40A includes a connection section 40C connected to the first rotating member 24 on the outer circumferential surface. The connection section 40C includes at least one spline. Preferably, the component 40 further includes a reducer 40B that is connected to the output shaft of the motor 46 and outputs a reduced rotation speed. The reducer 40B is provided in the housing 42. Preferably, the reducer 40B is accommodated in the housing 42. The rotational force of the motor 46 is transmitted to the reducer 40B. In this embodiment, the rotational force of the reducer 40B is transmitted to the output section 40A. The rotational force of the reducer 40B may be transmitted to the connecting member 28, for example, via a sprocket, a pulley, or a gear, without passing through the first rotating member 24. The rotational force of the reducer 40B may be transmitted to the rear wheel 14A, for example, via a roller, without passing through the first rotating member 24 and the connecting member 28. The type of the reducer 40B is not particularly limited. The reducer 40B includes at least one of, for example, a pair of gears that mesh with each other, a planetary gear mechanism, a pair of sprockets and chains, and a pair of pulleys and belts. The reducer 40B may be omitted.

[0081] Preferably, the component 40 includes at least one mounting portion 44. In this embodiment, the at least one mounting portion 44 includes a plurality of mounting portions 44. Preferably, the plurality of mounting portions 44 includes at least one first mounting portion 44A and at least one second mounting portion 44B. In this embodiment, the number of the first mounting portions 44A and the number of the second mounting portions 44B are equal. The number of the first mounting portions 44A and the number of the second mounting portions 44B may be different. In this embodiment, the at least one first mounting portion 44A includes a plurality of first mounting portions 44A, and the at least one second mounting portion 44B includes a plurality of second mounting portions 44B. The plurality of first mounting portions 44A are disposed at intervals around the rotation axis C2 of the input rotating shaft 12A on the outer periphery of the housing 42. The plurality of second mounting portions 44B are disposed at intervals around the rotation axis C2 of the input rotating shaft 12A on the outer periphery of the housing 42. For example, at least one first mounting portion 44A and at least one second mounting portion 44B are aligned in a direction parallel to the rotation axis C2 of the input rotation shaft 12A. In this embodiment, each of the multiple first mounting portions 44A and each of the multiple second mounting portions 44B are aligned in a direction parallel to the rotation axis C2 of the input rotation shaft 12A. The at least one first mounting portion 44A and the at least one second mounting portion 44B are arranged at intervals in a direction parallel to the rotation axis C2 of the input rotation shaft 12A.

[0082] The fastener 36 includes a bolt or a rivet. The fastener 36 includes a head 36B and a shaft 36C that is integrally formed with the head 36B as a single member. The fastener 36 has a central axis C1. The head 36B and the shaft 36C are aligned along the central axis C1. The head 36B and the shaft 36C are formed in a substantially cylindrical shape. The maximum diameter of the head 36B is larger than the maximum diameter of the shaft 36C. Preferably, the fastener 36 includes a male thread 36A. The male thread 36A is provided on the shaft 36C. The male thread 36A may be provided on the entire shaft 36C in the direction along the central axis C1, or may be provided on only a part of the shaft 36C. The support 38 is formed with a through hole 38A that penetrates the support 38 at a position corresponding to the mounting portion 44. The through hole 38A is formed in a cylindrical shape. The diameter of the through hole 38A is smaller than the maximum diameter of the head 36B and larger than the maximum diameter of the shaft 36C. The male screw 36A is inserted into the through hole 38A of the support 38 and screwed into the second female screw 64A formed in the mounting portion 44, whereby a part of the support 38 is sandwiched between the component 40 and the head 36B of the fastener 36, and the component 40 is attached to the support 38. Preferably, the support 38 includes a pair of wall portions 38B, 38C spaced apart in a direction parallel to the width direction of the human-powered vehicle 10. At least one mounting portion 44, the first mounting portion 44A, and the second mounting portion 44B are disposed between the pair of wall portions 38B, 38C. A through hole 38A is formed in each of the pair of wall portions 38B, 38C. The first mounting portion 44A is connected to the wall portion 38B. The second mounting portion 44B is connected to the wall portion 38C. When the component 40 is attached to the support portion 38 by the fastener 36, the insertion direction of the fastener 36 inserted into the first mounting portion 44A is opposite to the insertion direction of the fastener 36 inserted into the second mounting portion 44B. The fastener 36 is formed of, for example, an aluminum alloy or a stainless steel alloy. In this embodiment, the through hole 38A extends in a direction parallel to the rotation axis C2 of the input rotating shaft 12A. The through hole 38A may extend in a direction intersecting a direction parallel to the rotation axis C2 of the input rotating shaft 12A. The direction intersecting a direction parallel to the rotation axis C2 of the input rotating shaft 12A includes, for example, a direction perpendicular to a direction parallel to the rotation axis C2 of the input rotating shaft 12A.

[0083] Preferably, the component 40 includes a housing 42, a positioning portion 48, and an insulating portion 50. The housing 42 includes a first housing portion 52 and a second housing portion 54 that forms the accommodation space SA together with the first housing portion 52. Preferably, the first housing portion 52 and the second housing portion 54 include a magnesium alloy. The magnesium alloy is, for example, AZ91D. The mounting portion 44 is provided in at least one of the first housing portion 52 and the second housing portion 54. In this embodiment, the mounting portion 44 is provided in the first housing portion 52.

[0084] The housing 42 rotatably supports the input rotating shaft 12A. The housing 42 includes a first hole 42X and a second hole 42Y into which the input rotating shaft 12A is inserted. The first hole 42X and the second hole 42Y respectively connect a space surrounded by the housing 42 and an external space of the housing 42. A first axial end 13A of the input rotating shaft 12A protrudes from the first hole 42X into the external space of the housing 42. A second axial end 13B of the input rotating shaft 12A protrudes from the second hole 42Y into the external space of the housing 42. A first bearing 41A is disposed in the first hole 42X. The input rotating shaft 12A is supported by the housing 42 by the first bearing 41A so as to be rotatable relative to the housing 42. The first bearing 41A may be a ball bearing, a roller bearing, or a plain bearing. The rotation axis of the output portion 40A is equal to the rotation axis C2 of the input rotating shaft 12A. The output part 40A is provided on the outer periphery of the input rotating shaft 12A around the rotation axis. A second bearing 41B is arranged in the second hole 42Y. The output part 40A is provided in the housing 42 so as to be rotatable relative to the housing 42 by the second bearing 41B. The output part 40A has a substantially cylindrical shape. The second bearing 41B is provided on the outer periphery of the output part 40A. A third bearing 41C is preferably provided between the inner periphery of the output part 40A and the outer periphery of the input rotating shaft 12A. The output part 40A rotatably supports the input rotating shaft 12A via the third bearing 41C. The second bearing 41B may be a ball bearing, a roller bearing, or a plain bearing. The third bearing 41C includes, for example, a needle bearing or a sleeve. In a direction perpendicular to the rotation axis C2, at least a part of the second bearing 41B is arranged to overlap the third bearing 41C.

[0085] The first housing part 52 includes a second side surface in a direction parallel to the rotation axis C2 of the input rotary shaft 12A of the housing 42. The second housing part 54 includes a first side surface in a direction parallel to the rotation axis C2 of the input rotary shaft 12A of the housing 42. The first housing part 52 and the second housing part 54 are connected to each other by, for example, a connecting member 56. The connecting member 56 is, for example, a bolt or a rivet. One of the first housing part 52 and the second housing part 54 is provided with, for example, a through hole into which a shaft part of a bolt is inserted, and the other of the first housing part 52 and the second housing part 54 is provided with, for example, a female thread part that engages with the bolt. The first housing part 52 and the second housing part 54 may be connected to each other by, for example, an adhesive.

[0086] The insulating portion 50 is provided between the first housing portion 52 and the second housing portion 54, and electrically insulates the first housing portion 52 and the second housing portion 54. The insulating portion 50 is provided on the surfaces of the first housing portion 52 and the second housing portion 54. The insulating portion 50 includes, for example, a metal oxide film formed on the surface of the base material of the first housing portion 52 and the second housing portion 54. The metal oxide film includes, for example, at least one of an anodized film formed by anodizing the base material of the first housing portion 52 and the second housing portion 54, and a plating film formed by plating the base material of the first housing portion 52 and the second housing portion 54. The first housing portion 52 and the second housing portion 54 may have a paint film superimposed on at least a part of the anodized film or the plating film. Preferably, the paint film has electrical insulation properties. When the insulating portion 50 includes at least one of a metal oxide film and a coating film, the at least one of the metal oxide film and the coating film may be provided not only between the first housing portion 52 and the second housing portion 54, but also on the entire surface of the first housing portion 52 and the entire surface of the second housing portion 54. The insulating portion 50 may include at least one of a waterproof grease, a waterproof seal, and a coating film instead of or in addition to the metal oxide film.

[0087] The mounting portion 44 includes a metal base portion 62, a metal connecting portion 64, and an intermediate portion 66. The connecting portion 64 is provided on the base portion 62 and configured to connect to the fastener 36. The intermediate portion 66 is provided between the connecting portion 64 and the base portion 62. Preferably, the base portion 62 has a hole 62A. In this embodiment, the hole 62A is a through hole. The hole 62A may be a blind hole. At least a portion of the connecting portion 64 and at least a portion of the intermediate portion 66 are disposed in the hole 62A. The base portion 62 includes a first female thread portion 62B that forms the hole 62A. Preferably, the intermediate portion 66 includes at least a portion of a male thread portion 66A that is configured to be coupled with the first female thread portion 62B. The connecting portion 64 is formed, for example, in a substantially cylindrical shape. The connecting portion 64 may be formed, for example, in a substantially bottomed cylindrical shape. The connecting portion 64 includes a second female thread portion 64A that is configured to connect to the fastener 36. The intermediate portion 66 is provided on the outer periphery of the connecting portion 64. The intermediate portion 66 is formed in a substantially cylindrical shape. The second female threaded portion 64A is provided on an inner periphery of the connecting portion 64. The second female threaded portion 64A is configured to connect to the male threaded portion 36A of the fastener 36. One of the first female threaded portion 62B and the second female threaded portion 64A is a right-handed thread, and the other of the first female threaded portion 62B and the second female threaded portion 64A is a left-handed thread.

[0088] Preferably, the connecting portion 64 has a flange portion 64B. The flange portion 64B is disposed between the base portion 62 and the support portion 38 in a state in which the mounting portion 44 is attached to the support portion 38 of the human-powered vehicle 10 by the fastener 36. The flange portion 64B has an outer shape larger than the diameter of the hole 62A. In a state in which a part of the connecting portion 64 is disposed on the inner periphery of the hole 62A, the flange portion 64B is located on the outer side of the hole 62A. The flange portion 64B is configured to come into contact with the support portion 38 in a state in which the component 40 is attached to the support portion 38 by the fastener 36. The contact of the flange portion 64B with the support portion 38 makes it difficult for the support portion 38 and the base portion 62 to come into contact with each other. Preferably, the intermediate portion 66 is provided over the entire area of ​​the outer periphery of the portion of the connecting portion 64 that is disposed in the hole 62A. Preferably, the intermediate portion 66 is also provided on a side surface 64D of the flange portion 64B that faces the base portion 62.

[0089] Preferably, the intermediate portion 66 is provided so as to be undetachable from the connecting portion 64. For example, the intermediate portion 66 and the connecting portion 64 may be formed so as to be undetachable by subjecting a single member to a surface treatment. The connecting portion 64 and the intermediate portion 66 may each be composed of separate members and may be formed so as to be undetachable by, for example, insert molding or adhesion.

[0090] The base portion 62 includes a first material having a first standard electrode potential. The first material includes an alloy. Preferably, the first material includes a magnesium alloy. Preferably, in the present embodiment, the base portion 62 includes a magnesium alloy. At least a portion of the housing 42 is integrally formed with the base portion 62 as a single member. The first female thread portion 62B of the base portion 62 may include at least one of a metal oxide film and a paint film on an inner periphery thereof.

[0091] The connecting portion 64 includes a second material having a second standard electrode potential. The second material includes, for example, an alloy. Preferably, the second material includes an aluminum alloy. The aluminum alloy is, for example, ADC12. The second material may include an iron alloy instead of the aluminum alloy. The middle portion 66 is formed of a third material or a fourth material. The third material has a third standard electrode potential, and the difference between the third standard electrode potential and the first standard electrode potential and the difference between the third standard electrode potential and the second standard electrode potential are smaller than the difference between the first standard electrode potential and the second standard electrode potential, respectively. The fourth material has electrical insulation. More preferably, the middle portion 66 is formed of a fourth material. Preferably, the first standard electrode potential is different from the second standard electrode potential.

[0092] In this embodiment, the intermediate portion 66 is formed of a fourth material, and the fourth material includes a metal oxide. Preferably, the metal oxide includes aluminum oxide. The connecting portion 64 and the intermediate portion 66 are fabricated, for example, by performing a process for forming a metal oxide film on the outer periphery of a substantially cylindrical base material formed of the second material. The metal oxide film forming the intermediate portion 66 includes, for example, an anodized film or a plated film. The thickness of the intermediate portion 66 is 1 micrometer or more and 30 micrometers or less. When the metal oxide film is an anodized film, the thickness of the intermediate portion 66 is preferably 3 micrometers or more and 10 micrometers or less. When the metal oxide film is a plated film, the thickness of the intermediate portion 66 is preferably 10 micrometers or more and 20 micrometers or less.

[0093] The connecting portion 64 may contain a fifth material in addition to the second material. Preferably, an electrical insulating portion may be provided on a portion of the outer surface of the connecting portion 64 that is not in contact with the intermediate portion 66. The electrical insulating portion of the connecting portion 64 is formed of the fifth material. Preferably, the fifth material is the same material as the fourth material. For example, the electrical insulating portion of the connecting portion 64 is formed by performing a process of forming a metal oxide film on the inner peripheral portion of a substantially cylindrical base material formed of the second material. The metal oxide film includes, for example, an anodized film or a plated film. Preferably, the thickness of the electrical insulating portion of the connecting portion 64 is 1 micrometer or more and 30 micrometers or less. When the metal oxide film is an anodized film, the thickness of the electrical insulating portion of the connecting portion 64 is preferably 3 micrometers or more and 10 micrometers or less. When the metal oxide film is a plated film, the thickness of the electrical insulating portion of the connecting portion 64 is preferably 10 micrometers or more and 20 micrometers or less. The intermediate portion 66 and the electrically insulating portion of the connecting portion 64 may be formed simultaneously, for example, during a manufacturing process.

[0094] The entire surface of the portion of the connecting portion 64 that is not in contact with the intermediate portion 66 may be formed of a metal oxide film. A metal oxide film may not be formed on the surface of the inner periphery of the connecting portion 64. The connecting portion 64 may be formed, for example, including only the second material.

[0095] Preferably, the connecting portion 64 includes a tool engagement portion 64C configured to engage a tool. The tool engagement portion 64C is provided, for example, at at least one of the first end 64X or the second end 64Y of the connecting portion 64 in the direction in which the second female thread portion 64A extends. A flange portion 64B is provided at the first end 64X of the connecting portion 64. Preferably, the tool engagement portion 64C is provided at the second end 64Y of the connecting portion 64. When the connecting portion 64 has a substantially cylindrical shape, the tool engagement portion 64C may be provided at the inner periphery or the outer periphery of the connecting portion 64. When the connecting portion 64 has a substantially bottomed tubular shape, the tool engagement portion 64C may be provided at the inner periphery, the outer periphery, or the bottom of the connecting portion 64. The tool engagement portion 64C preferably has a hole 64E corresponding to the outer shape of the first tool. When the connecting portion 64 has a substantially cylindrical shape and the hole 64E is formed at the second end 64Y, the maximum diameter of the hole 64E is not particularly limited as long as it is configured to be smaller than the diameter of the connecting portion 64. When the hole 64E is formed at the first end 64X of the connecting portion 64, the maximum diameter of the hole 64E is configured to be smaller than the diameter of the connecting portion 64, and the minimum diameter of the hole 64E is configured to be larger than the inner diameter of the second female threaded portion 64A. When the connecting portion 64 has a substantially bottomed cylindrical shape and the hole 64E is formed on the outside of the bottom provided at the second end 64Y, the maximum diameter of the hole 64E is not particularly limited as long as it is configured to be smaller than the diameter of the connecting portion 64. When the connecting portion 64 has a substantially bottomed cylindrical shape and the hole 64E is formed on the inside of the bottom provided at the second end 64Y, the maximum diameter of the hole 64E is configured to be smaller than the inner diameter of the second female threaded portion 64A. The first tool includes, for example, a hexagonal wrench, a hex lobe wrench, or a screwdriver. The tool engagement portion 64C may be provided on the outer periphery of the connecting portion 64. When the tool engagement portion 64C is provided, for example, on the outer periphery of the connecting portion 64 and on the second end portion 64Y of the connecting portion 64, the second end portion 64Y of the connecting portion 64 is configured to have a smaller maximum diameter than other portions of the connecting portion 64. The outer shape of the second end portion 64Y of the connecting portion 64 corresponds to the second tool.For example, when the tool engagement portion 64C is provided on the outer periphery of the connecting portion 64 and on the flange portion 64B of the first end portion 64X of the connecting portion 64, the outer shape of the flange portion 64B corresponds to the second tool. The second tool includes, for example, a spanner or a wrench. By engaging the tool with the tool engagement portion 64C to change the coupling state between the male thread portion 66A of the intermediate portion 66 and the first female thread portion 62B of the base portion 62, the relative positions of the connecting portion 64 and the intermediate portion 66 and the base portion 62 are adjusted. Even if a gap is formed between the support portion 38 and the base portion 62 in the extending direction of the through hole 38A, the relative positions of the connecting portion 64 and the intermediate portion 66 with respect to the base portion 62 can be adjusted so that the connecting portion 64 approaches the support portion 38. Therefore, when the fastener 36 is coupled to the attachment portion 44, the application of an excessive load to the support portion 38 is suppressed.

[0096] The positioning portion 48 is provided on each of the first housing portion 52 and the second housing portion 54, and is configured to determine the relative position of the first housing portion 52 and the second housing portion 54. Preferably, the positioning portion 48 includes a first protrusion 48A provided on one of the first housing portion 52 and the second housing portion 54, and a first recess 48B provided on the other of the first housing portion 52 and the second housing portion 54, in which at least a part of the first protrusion 48A is disposed. The first protrusion 48A is electrically connected to one of the first housing portion 52 and the second housing portion 54. The first recess 48B is electrically connected to the other of the first housing portion 52 and the second housing portion 54. The first protrusion 48A is integrally formed as a single member with the one of the first housing portion 52 and the second housing portion 54. The first recess 48B is integrally formed as a single member with the other of the first housing portion 52 and the second housing portion 54. The positioning portion 48 is provided, for example, on a first mating surface 48C of the first housing portion 52 that contacts the second housing portion 54 directly or via a seal member, and a second mating surface 48D of the second housing portion 54 that contacts the first housing portion 52 directly or via a seal member. The first mating surface 48C is provided on the outer periphery of the first housing portion 52 around the input rotation shaft 12A. The second mating surface 48D is provided on the outer periphery of the second housing portion 54 around the input rotation shaft 12A. The first convex portion 48A protrudes from one of the first housing portion 52 and the second housing portion 54 toward the other of the first housing portion 52 and the second housing portion 54. The first concave portion 48B is recessed from one of the first housing portion 52 and the second housing portion 54 toward the other of the first housing portion 52 and the second housing portion 54. In this embodiment, the first mating surface 48C and the second mating surface 48D are substantially perpendicular to a direction parallel to the rotation axis C2 of the input rotation shaft 12A, and the first convex portion 48A and the first concave portion 48B each extend along a direction parallel to the rotation axis C2 of the input rotation shaft 12A. The first mating surface 48C and the second mating surface 48D may be inclined in a direction parallel to the rotation axis C2 of the input rotation shaft 12A, and the first convex portion 48A and the first concave portion 48B may extend at an incline in a direction parallel to the rotation axis C2 of the input rotation shaft 12A.When the first convex portion 48A is fitted into the first concave portion 48B, the relative positions of the first housing portion 52 and the second housing portion 54 are determined, making it easy to join the first housing portion 52 and the second housing portion 54 to each other by the joining member 56.

[0097] Preferably, the first housing part 52 and the second housing part 54 are electrically connected at the positioning part 48. At least a part of the surface of the first convex part 48A and at least a part of the surface of the first concave part 48B are electrically conductive. Preferably, the entire surface of the first convex part 48A and at least a part of the inner surface of the first concave part 48B are electrically conductive. For example, at least a part of the surface of the first convex part 48A and at least a part of the surface of the first concave part 48B are not formed with a metal oxide film. When at least one of a metal oxide film and a coating film is formed on the surface of the base material of the first housing part 52 and the second housing part 54, for example, at least one of a metal oxide film and a coating film is simultaneously formed on the surfaces of the first convex part 48A and the first concave part 48B. At least a part of the surface of first convex portion 48A and at least a part of the surface of first concave portion 48B may be formed by cutting the metal oxide film and the paint film formed on the surface of first convex portion 48A and the surface of first concave portion 48B. When at least one of the metal oxide film and the paint film is formed on the surface of the base material of first housing portion 52 and second housing portion 54, for example, at least a part of the surface of first convex portion 48A and at least a part of the surface of first concave portion 48B may be covered with a cover member so that the metal oxide film and the paint film are not formed.

[0098] The first protrusion 48A and the first recess 48B may be formed separately from the first housing portion 52 and the second housing portion 54, respectively. One of the first housing portion 52 and the second housing portion 54 and the first protrusion 48A may be coupled with a screw, with an adhesive, or by press-fitting. The other of the first housing portion 52 and the second housing portion 54 and the first recess 48B may be coupled with a screw, with an adhesive, or by press-fitting.

[0099] Preferably, the component 40 further includes a conductive portion 70 that is provided on the positioning portion 48 and electrically connects the first housing portion 52 and the second housing portion 54. Preferably, the conductive portion 70 includes conductive grease 71. The conductive grease 71 contacts at least a part of the surface of the first protrusion 48A and at least a part of the surface of the first recess 48B. The conductive grease 71 can electrically connect the first protrusion 48A and the first recess 48B even if at least a part of the surface of the first protrusion 48A and at least a part of the surface of the first recess 48B are not in direct contact with each other. When at least a part of the surface of the first protrusion 48A and at least a part of the surface of the first recess 48B are in direct contact with each other, the conductive portion 70 may be formed by at least a part of the surface of the first protrusion 48A and at least a part of the surface of the first recess 48B.

[0100] The component 40 includes a housing 42, a motor 46, a cover 72, and an electrical connector 74. The cover 72 is attached to the housing 42. The electrical connector 74 has a connection terminal 74A exposed in a space SB formed by the housing 42 and the cover 72. The electrical connector 74 includes the connection terminal 74A. The connection terminal 74A may include a plurality of terminals. Preferably, the electrical connector 74 is electrically connected to at least one electrical circuit board provided in the accommodation space SA of the motor 46 and the housing 42. The electrical connector 74 and the at least one electrical circuit may be connected, for example, by an electrical cable or may be connected by an electrical terminal. The connection terminal 74A of the electrical connector 74 is configured to be connected, for example, to a battery disposed outside the component 40 and an electrical cable connected to at least one of the other electrical components. The other electrical components include, for example, a cycle computer, an operation switch, or an electronic gear shifter.

[0101] The electrical connector 74 is provided in the housing 42 such that the connection terminal 74A is exposed to the outside of the housing 42. The electrical connector 74 is disposed on the outer surface of the housing 42. The housing 42 is formed with a through hole for the connector in which a part of the electrical connector 74, an electrical cable, or an electrical terminal is disposed. The through hole for the connector is covered by the electrical connector 74. Preferably, the electrical connector 74 is disposed in a recess 42A formed in the outer surface of the housing 42. For example, the electrical connector 74 is provided in the recess 42A such that the connection terminal 74A is exposed in a direction intersecting the axial direction of the input rotating shaft 12A. In this embodiment, the electrical connector 74 is provided in the recess 42A such that the connection terminal 74A is exposed in a direction perpendicular to the axial direction of the input rotating shaft 12A. The electrical connector 74 may be provided in the recess 42A such that the connection terminal 74A is exposed in a direction parallel to the axial direction of the input rotating shaft 12A. The cover 72 is configured to cover the recess 42A.

[0102] Preferably, the housing 42 includes a metal material, and the cover 72 includes a resin material. The resin material may be a resin material having a general rigidity, or may be a fiber-reinforced resin material. The cover 72 includes a rib 76. The rib 76 is configured to suppress deformation of the space SB by contacting the housing 42. The rib 76 protrudes toward the housing 42. Preferably, at least a part of the rib 76 is provided at a position covering the recess 42A of the housing 42. Preferably, the rib 76 includes a plurality of ribs 76 having different minimum distances L between the housing 42 and the rib 76. The plurality of ribs 76 include at least one first rib 76A extending in a first direction X1 and at least one second rib 76B extending in a second direction X2 different from the first direction X1. Preferably, the first direction X1 and the second direction X2 are substantially perpendicular to each other.

[0103] When the at least one first rib 76A includes a plurality of first ribs 76A, the plurality of first ribs 76A are arranged at intervals in the second direction X2. When the at least one second rib 76B includes a plurality of second ribs 76B, the plurality of second ribs 76B are arranged at intervals in the first direction X1. Preferably, the at least one first rib 76A and the at least one second rib 76B are connected to each other. Preferably, at least one of the at least one first rib 76A and at least one of the at least one second rib 76B are provided on the cover 72 so as to intersect with each other.

[0104] Preferably, the housing 42 includes a protruding portion 42B. The protruding portion 42B is provided on the top of the wall of the recessed portion 42A. The protruding portion 42B protrudes toward the cover 72. Preferably, the protruding direction A1 of the protruding portion 42B and the protruding direction A2 of the multiple ribs 76 are parallel to each other. Preferably, the protruding portion 42B faces at least a part of at least one of the multiple ribs 76 in the protruding direction of the protruding portion 42B. The protruding portion 42B extends in the first direction X1, for example, and faces at least one of the multiple second ribs 76B in the protruding direction A1. The at least one first rib 76A includes a third rib 76C arranged adjacent to a portion of the housing 42 surrounding the recessed portion 42A. In the protruding direction A1 of the convex portion 42B, the minimum distance L1 between the tip 76D of the third rib 76C and the portion of the housing 42 surrounding the recessed portion 42A is shorter than the minimum distance L2 between the tip 42C of the convex portion 42B and at least one of the second ribs 76B. The minimum distance L1 may be 0 (zero) millimeters. When a force is applied to the cover 72 from the outside, at least one of the ribs 76 contacts the outer surface of the housing 42, thereby suppressing the deformation of the space SB. When a force is further applied to the cover 72 from the outside, the convex portion 42B contacts at least one of the ribs 76, thereby suppressing the deformation of the space SB. In this embodiment, when a force is applied to the cover 72 from the outside, the third rib 76C contacts the outer surface of the housing 42, thereby suppressing the deformation of the space SB. When a force is further applied to the cover 72 from the outside, the convex portion 42B contacts the second ribs 76B, thereby suppressing the deformation of the space SB.

[0105] In the component 40, the housing 42 includes a magnesium alloy, and the intermediate portion 66 is formed from the third material or the fourth material. Therefore, galvanic corrosion is less likely to occur near the attachment portion 44, regardless of the material of the fastener 36.

[0106] <Second embodiment> A component 40 of the second embodiment will be described with reference to Figures 14 and 15. The component 40 of the second embodiment is similar to the component 40 of the first embodiment except that the configurations of the first mounting portion 78A and the second mounting portion 78B are different, so the same reference numerals as in the first embodiment are used for the configurations common to the first embodiment, and duplicated explanations will be omitted. In this embodiment, the configuration of the first mounting portion 78A is different from the configuration of the second mounting portion 78B.

[0107] At least one mounting portion 44 includes at least one first mounting portion 78A and at least one second mounting portion 78B. In this embodiment, the number of the first mounting portions 78A and the number of the second mounting portions 78B are equal. The number of the first mounting portions 78A and the number of the second mounting portions 78B may be different. In this embodiment, the at least one first mounting portion 78A includes a plurality of first mounting portions 78A, and the at least one second mounting portion 78B includes a plurality of second mounting portions 78B. The plurality of first mounting portions 78A are disposed on the outer periphery of the housing 42 at intervals around the rotation axis C2 of the input rotating shaft 12A. The plurality of second mounting portions 78B are disposed on the outer periphery of the housing 42 at intervals around the rotation axis C2 of the input rotating shaft 12A. For example, at least one first mounting portion 78A and at least one second mounting portion 78B are aligned in a direction parallel to the rotation axis C2 of the input rotating shaft 12A. In this embodiment, each of the multiple first mounting portions 78A and each of the multiple second mounting portions 78B are aligned in a direction parallel to the rotation axis C2 of the input rotating shaft 12A. At least one first mounting portion 78A and at least one second mounting portion 78B are arranged at intervals in a direction parallel to the rotation axis C2 of the input rotating shaft 12A. In this embodiment, the fastener 36 is a bolt. The insertion direction of the fastener 36 inserted into the first mounting portion 78A is opposite to the insertion direction of the fastener 36 inserted into the second mounting portion 78B.

[0108] The first attachment portion 78A includes a base portion 62 made of metal, a connecting portion 80 made of metal, and an intermediate portion 82. The connecting portion 80 is provided on the base portion 62 and configured to connect to the fastener 36. The intermediate portion 82 is provided between the connecting portion 80 and the base portion 62. Preferably, the base portion 62 has a hole 62A. In this embodiment, the hole 62A is a through hole. The hole 62A may be a blind hole. At least a part of the connecting portion 80 and at least a part of the intermediate portion 82 are disposed in the hole 62A. In this embodiment, no threads are formed on the inner periphery defining the hole 62A of the base portion 62. The connecting portion 80 includes a second female threaded portion 80A configured to connect to the fastener 36. The second female threaded portion 80A is configured to connect to the male threaded portion 36A of the fastener 36. The connecting portion 80 is formed, for example, in a substantially cylindrical shape. The connecting portion 80 may be formed, for example, in a substantially bottomed tubular shape. The second female threaded portion 80A is provided on the inner periphery of the connecting portion 80. The intermediate portion 82 is provided on the outer periphery of the connecting portion 80. The intermediate portion 82 is formed in a substantially cylindrical shape. The intermediate portion 82 may be formed in a substantially cylindrical shape with a bottom.

[0109] Preferably, the connecting portion 80 has a flange portion 80B. The flange portion 80B is disposed between the base portion 62 and the support portion 38 in a state in which the mounting portion 44 is attached to the support portion 38 of the human-powered vehicle 10 by the fastener 36. The flange portion 80B has an outer shape larger than the diameter of the hole 62A. In a state in which a part of the connecting portion 80 is disposed on the inner periphery of the hole 62A, the flange portion 80B is located on the outer side of the hole 62A. The flange portion 80B is configured to come into contact with the support portion 38 in a state in which the component 40 is attached to the support portion 38 by the fastener 36. The contact of the flange portion 80B with the support portion 38 makes it difficult for the support portion 38 and the base portion 62 to come into contact with each other. Preferably, the intermediate portion 82 is provided over the entire area of ​​the outer periphery of the portion of the connecting portion 80 that is disposed in the hole 62A.

[0110] Preferably, the intermediate portion 82 is provided so as to be detachable from the connecting portion 80. The first mounting portion 78A includes a first member 84 including the intermediate portion 82. The first member 84 is formed in a substantially cylindrical shape. The first member 84 may be formed in a substantially bottomed tubular shape. The intermediate portion 82 is provided on the outer periphery of the first member 84. The intermediate portion 82 may be provided on at least one of the inner periphery of the first member 84 and the side surface portion connecting the outer periphery and the inner periphery of the first member 84 in addition to the outer periphery of the first member 84. The entire first member 84 may be the intermediate portion 82. Preferably, the intermediate portion 82 includes the outer periphery surface of the first member 84. Preferably, the connecting portion 80 is connected to the first member 84 so as to be movable relative to the first member 84 in the extending direction of the hole 62A. The first member 84 and the base portion 62 include a first restricting portion 87 that restricts the movement of the first member 84 relative to the base portion 62. The first restricting portion 87 includes at least one recess 87A and at least one protrusion 87B having complementary shapes. One of the at least one recess 87A and at least one protrusion 87B is provided on one of the outer periphery of the first member 84 and the inner periphery of the base portion 62, and the other of the at least one recess 87A and at least one protrusion 87B is provided on the other of the outer periphery of the first member 84 and the inner periphery of the base portion 62. The at least one recess 87A and at least one protrusion 87B provided on the inner periphery of the base portion 62 are preferably provided in the middle of the inner periphery of the base portion 62 in the direction in which the hole 62A extends. At least one recess 87A and at least one protrusion 87B may be provided on each of the outer periphery of the first member 84 and the inner periphery of the base portion 62. The first restricting portion 87 restricts rotation of the first member 84 relative to the base portion 62 and restricts separation of the first member 84 from the base portion 62 by engaging the recessed portion 87A with the protruding portion 87B. The first member 84 is, for example, insert molded into the base portion 62. Preferably, at least one of the first member 84 and the connecting portion 80 includes a restricting portion 84A that restricts relative rotation between the first member 84 and the connecting portion 80. The restricting portion 84A is provided on at least one of the inner peripheral portion of the first member 84 and the outer peripheral portion of the connecting portion 80. The restricting portion 84A includes, for example, one or more splines.

[0111] The first mounting portion 78A and the corresponding base portion 62 include a first material having a first standard electrode potential. Preferably, the first mounting portion 78A and the corresponding base portion 62 include a magnesium alloy. At least a portion of the housing 42 is integrally formed with the first mounting portion 78A and the corresponding base portion 62 as a single member. An inner periphery defining the hole 62A of the base portion 62 may include at least one of a metal oxide film and a paint film.

[0112] The connecting portion 80 includes a second material having a second standard electrode potential. Preferably, the second material includes an aluminum alloy, and the metal oxide includes aluminum oxide. The aluminum alloy is, for example, ADC12. The intermediate portion 82 is formed of a third material or a fourth material. The third material has a third standard electrode potential, and the difference between the third standard electrode potential and the first standard electrode potential and the difference between the third standard electrode potential and the second standard electrode potential are smaller than the difference between the first standard electrode potential and the second standard electrode potential, respectively. The fourth material has electrical insulation properties. The intermediate portion 66 is more preferably formed of a fourth material. Preferably, the first standard electrode potential is different from the second standard electrode potential.

[0113] In this embodiment, the intermediate portion 82 is formed of a fourth material, and the fourth material includes a metal oxide. For example, the intermediate portion 82 is produced by forming a metal oxide film on the outer periphery of the first member 84 formed of the second material. The metal oxide film includes, for example, an anodized film or a plated film. The thickness of the intermediate portion 82 is preferably 1 micrometer or more and 30 micrometers or less. When the metal oxide film is an anodized film, the thickness of the intermediate portion 82 is preferably 3 micrometers or more and 10 micrometers or less. When the metal oxide film is a plated film, the thickness of the intermediate portion 82 is preferably 10 micrometers or more and 20 micrometers or less.

[0114] In this embodiment, the connecting portion 80 may contain a fifth material in addition to the second material. Preferably, an electrical insulating portion may be provided on the outer surface of the connecting portion 80. The electrical insulating portion of the connecting portion 80 is formed by the fifth material. Preferably, the fifth material is the same material as the fourth material. For example, the electrical insulating portion of the connecting portion 80 is formed by performing a process for forming a metal oxide film on the surface of a substantially cylindrical base material formed by the second material. The metal oxide film includes, for example, an anodized film or a plated film. Preferably, the thickness of the electrical insulating portion of the connecting portion 80 is 1 micrometer or more and 30 micrometers or less. When the metal oxide film is an anodized film, the thickness of the electrical insulating portion of the connecting portion 80 is preferably 3 micrometers or more and 10 micrometers or less. When the metal oxide film is a plated film, the thickness of the electrical insulating portion of the connecting portion 80 is preferably 10 micrometers or more and 20 micrometers or less.

[0115] The second attachment portion 78B includes a base portion 62 made of metal, a connecting portion 88 made of metal, and an intermediate portion 90. The connecting portion 88 is provided on the base portion 62 and configured to be connected to the fastener 36. The intermediate portion 90 is provided between the connecting portion 88 and the base portion 62. Preferably, the base portion 62 has a hole 62A. In this embodiment, the hole 62A is a through hole. The hole 62A may be a blind hole. At least a part of the connecting portion 88 and at least a part of the intermediate portion 90 are disposed in the hole 62A. No threads are formed on the inner circumferential surface defining the hole 62A of the base portion 62. The connecting portion 88 and the intermediate portion 90 are non-detachably provided on the base portion 62. The connecting portion 88 includes a second female thread portion 88A configured to be connected to the fastener 36. The second female thread portion 88A is configured to be connected to the male thread portion 36A of the fastener 36. The connecting portion 88 is formed, for example, in a substantially cylindrical shape. The connecting portion 88 may be formed, for example, in a substantially bottomed tubular shape. The second female thread portion 88A is provided on an inner periphery of the connecting portion 88. The intermediate portion 90 is provided on an outer periphery of the connecting portion 88. The intermediate portion 90 is formed in a substantially cylindrical shape. The intermediate portion 90 may be formed in a substantially cylindrical shape.

[0116] Preferably, the intermediate portion 90 is provided to the connecting portion 88 in an undetachable manner. The second mounting portion 78B includes a second member 92 including the intermediate portion 90. The second member 92 is formed in a substantially cylindrical shape. The second member 92 may be formed in a substantially bottomed tubular shape. The intermediate portion 90 is provided on the outer periphery of the second member 92. Preferably, the intermediate portion 90 includes an outer periphery surface of the second member 92. The second member 92 and the base portion 62 include a second restricting portion 93 that restricts movement of the second member 92 relative to the base portion 62. The second restricting portion 93 includes at least one recessed portion 93B and at least one protruding portion 93A having complementary shapes. When the at least one recessed portion 93B includes a plurality of recessed portions 93B, preferably, the plurality of recessed portions 93B are disposed at equal intervals in the circumferential direction of the hole 62A. When the at least one convex portion 93A includes a plurality of convex portions 93A, the plurality of convex portions 93A are preferably arranged at equal intervals in the circumferential direction of the hole 62A. At least one recess 93B and at least one convex portion 93A are provided on one of the outer periphery of the second member 92 and the inner periphery of the base portion 62, and the other of the at least one recess 93B and at least one convex portion 93A is provided on the other of the outer periphery of the second member 92 and the inner periphery of the base portion 62. The at least one recess 93B and at least one convex portion 93A provided on the inner periphery of the base portion 62 are preferably provided in the middle of the inner periphery of the base portion 62 in the extending direction of the hole 62A. At least one recess 93B and at least one convex portion 93A may be provided on each of the outer periphery of the second member 92 and the inner periphery of the base portion 62. The second restricting portion 93 restricts rotation of the second member 92 relative to the base portion 62 by engaging the concave portion 93B with the convex portion 93A, and restricts separation of the second member 92 from the base portion 62. The second member 92 is, for example, insert molded into the base portion 62.

[0117] The base portion 62 corresponding to the second mounting portion 78B includes a first material having a first standard electrode potential. Preferably, the base portion 62 includes a magnesium alloy. At least a portion of the housing 42 is integrally formed with the base portion 62 corresponding to the second mounting portion 78B as a single member. An inner periphery defining the hole 62A of the base portion 62 may include at least one of a metal oxide film and a paint film.

[0118] The connecting portion 88 includes a second material having a second standard electrode potential. Preferably, the second material includes an aluminum alloy, and the metal oxide includes aluminum oxide. The aluminum alloy is, for example, ADC12. The intermediate portion 90 is formed of a third material or a fourth material. The third material has a third standard electrode potential, and the difference between the third standard electrode potential and the first standard electrode potential and the difference between the third standard electrode potential and the second standard electrode potential are smaller than the difference between the first standard electrode potential and the second standard electrode potential, respectively. The fourth material has electrical insulation properties. The intermediate portion 90 is more preferably formed of a fourth material. Preferably, the first standard electrode potential is different from the second standard electrode potential.

[0119] In this embodiment, the intermediate portion 90 is formed of a fourth material, and the fourth material includes a metal oxide. For example, the intermediate portion 90 is produced by forming a metal oxide film on the outer periphery of the second member 92 formed of the second material. The metal oxide film includes, for example, an anodized film or a plated film. The thickness of the intermediate portion 90 is preferably 1 micrometer or more and 30 micrometers or less. When the metal oxide film is an anodized film, the thickness of the intermediate portion 90 is preferably 3 micrometers or more and 10 micrometers or less. When the metal oxide film is a plated film, the thickness of the intermediate portion 90 is preferably 10 micrometers or more and 20 micrometers or less.

[0120] The connecting portion 88 of this embodiment may contain a fifth material in addition to the second material. Preferably, an electrical insulating portion may be provided on a portion of the outer surface of the connecting portion 88 that is not in contact with the intermediate portion 90. The electrical insulating portion of the connecting portion 88 is formed of the fifth material. Preferably, the fifth material is the same material as the fourth material. For example, the electrical insulating portion of the connecting portion 88 is formed by performing a process of forming a metal oxide film on the inner peripheral portion of the second member formed of the second material. The metal oxide film includes, for example, an anodized film or a plated film. Preferably, the thickness of the electrical insulating portion of the connecting portion 88 is 1 micrometer or more and 30 micrometers or less. When the metal oxide film is an anodized film, the thickness of the electrical insulating portion of the connecting portion 88 is preferably 3 micrometers or more and 10 micrometers or less. When the metal oxide film is a plated film, the thickness of the electrical insulating portion of the connecting portion 88 is preferably 10 micrometers or more and 20 micrometers or less. The intermediate portion 90 and the electrical insulation of the connecting portion 88 may be formed simultaneously, for example, during the manufacturing process.

[0121] <Third embodiment> A component 40 of the third embodiment will be described with reference to Figures 16 to 23. The component 40 of the third embodiment is similar to the component 40 of the second embodiment except that the configurations of the first mounting portion 96A and the second mounting portion 96B are different, so the same reference numerals as in the first and second embodiments are used for the configurations common to the first and second embodiments, and duplicated descriptions will be omitted.

[0122] At least one mounting portion 44 includes at least one first mounting portion 96A and at least one second mounting portion 96B. In this embodiment, the number of the first mounting portions 96A and the number of the second mounting portions 96B are equal. The number of the first mounting portions 96A and the number of the second mounting portions 96B may be different. In this embodiment, the at least one first mounting portion 96A includes a plurality of first mounting portions 96A, and the at least one second mounting portion 96B includes a plurality of second mounting portions 96B. The plurality of first mounting portions 96A are disposed on the outer periphery of the housing 42 at intervals around the rotation axis C2 of the input rotating shaft 12A. The plurality of second mounting portions 96B are disposed on the outer periphery of the housing 42 at intervals around the rotation axis C2 of the input rotating shaft 12A. For example, at least one first mounting portion 96A and at least one second mounting portion 96B are aligned in a direction parallel to the rotation axis C2 of the input rotating shaft 12A. In this embodiment, each of the multiple first mounting portions 96A and each of the multiple second mounting portions 96B are aligned in a direction parallel to the rotation axis C2 of the input rotating shaft 12A. At least one first mounting portion 96A and at least one second mounting portion 96B are arranged at intervals in a direction parallel to the rotation axis C2 of the input rotating shaft 12A. In this embodiment, the fastener 36 is a bolt. The insertion direction of the fastener 36 inserted into the first mounting portion 96A is opposite to the insertion direction of the fastener 36 inserted into the second mounting portion 96B.

[0123] The base portion 62 includes a first base portion 63A and a second base portion 63B. The second base portion 63B is provided in the first base portion 63A and defines a hole 62A. In this embodiment, the second base portion 63B includes a material different from that of the first base portion 63A. In this embodiment, at least a portion of the housing 42 is integrally formed with the first base portion 63A as a single member. The first base portion 63A includes a magnesium alloy. The second base portion 63B is formed, for example, from an aluminum alloy. Preferably, the second base portion 63B is formed in a substantially cylindrical shape. The first base portion 63A includes an arrangement portion 63C in which the second base portion 63B is arranged. Preferably, the second base portion 63B is integrally formed with the first base portion 63A.

[0124] Preferably, the second base portion 63B has a fitting portion 63D that fits into the first base portion 63A so as not to come off the arrangement portion 63C. The fitting portion 63D is provided, for example, on the outer periphery of the second base portion 63B around the central axis C1 of the fastener 36. The fitting portion 63D is provided on the outer periphery of the second base portion 63B around the central axis C1 of the fastener 36, and includes at least one of a recess and a protrusion. In this embodiment, the fitting portion 63D is formed by a recess. The fitting portion 63D may be continuous around the entire circumference of the second base portion 63B around the central axis C1 of the fastener 36, or may be arranged intermittently. The fitting portion 63D is provided, for example, in a middle portion between both ends of the second base portion 63B in a direction parallel to the central axis C1 of the fastener 36.

[0125] The second base portion 63B has a first end surface 63E and a second end surface 63F in the coupling direction D1 of the fastener 36. In this embodiment, the first end surface 63E of the second base portion 63B is not covered by the first base portion 63A, and the second end surface 63F of the second base portion 63B is covered by the first base portion 63A. The second end surface 63F of the second base portion 63B preferably contacts the first base portion 63A. The first end surface 63E of the second base portion 63B may be covered by the first base portion 63A. The first end surface 63E of the second base portion 63B may contact the first base portion 63A. In a direction parallel to the central axis C1 of the fastener 36, the fitting portion 63D is disposed at a position closer to the first end surface 63E of the second base portion 63B than the second end surface 63F of the second base portion 63B, for example. The second base portion 63B may be press-fitted into the arrangement portion 63C of the first base portion 63A. When the second base portion 63B is press-fitted into the arrangement portion 63C of the first base portion 63A, the fitting portion 63D is provided near the first end surface 63E of the second base portion 63B or is omitted.

[0126] The inner diameter of the end including the first end face 63E of the second base portion 63B may be formed larger than the inner diameter of the other portion of the second base portion 63B. This can suppress the load applied to the portion defining the opening of the hole 62A of the base portion 62. The difference between the minimum inner diameter and the maximum outer diameter of the second base portion 63B is, for example, 1 millimeter (mm) or more and 20 millimeters (mm) or less. The second base portion 63B functions as a reinforcing member. The shape and material of the second base portion 63B are not particularly limited as long as it functions as a reinforcing member.

[0127] The first mounting portion 96A includes a base portion 62 made of metal, a connecting portion 97 made of metal, and an intermediate portion 98. The intermediate portion 98 is formed of a member different from the connecting portion 97. The intermediate portion 98 is formed of a fourth material. Preferably, the fourth material includes a resin material having electrical insulation. The fourth material may include reinforcing fibers in addition to the resin material. The hardness of the intermediate portion 98 is preferably high. The resin material is a synthetic resin material. The resin material included in the fourth material includes at least one of polyamide (PA), acrylonitrile butadiene styrene (ABS), polyphenylene sulfide (PPS), polyimide (PI), and polyetherimide (PEI), for example. The intermediate portion 98 may be formed of rubber. The reinforcing fibers included in the fourth material have electrical insulation. Preferably, the reinforcing fibers included in the fourth material include at least one of glass fibers and aramid fibers.

[0128] The connecting portion 97 is provided on the base portion 62 and configured to be connected to the fastener 36. The intermediate portion 98 is provided between the connecting portion 97 and the base portion 62. Preferably, the intermediate portion 98 is press-fitted into the hole 62A of the base portion 62. Preferably, the intermediate portion 98 is insert-molded into the connecting portion 97. The connecting portion 97 includes a second female thread portion 97A configured to be connected to the fastener 36. The second female thread portion 97A is configured to be connected to the male thread portion 36A of the fastener 36. Preferably, at least a portion of the connecting portion 97 is formed in a tubular shape. The connecting portion 97 is formed, for example, in a substantially cylindrical shape. The connecting portion 97 may be formed, for example, in a substantially bottomed tubular shape. The second female thread portion 97A is provided on an inner periphery of the connecting portion 97. The intermediate portion 98 is provided on an outer periphery of the connecting portion 97. At least a portion of the intermediate portion 98 is formed in a tubular shape. The intermediate portion 98 is formed in a substantially cylindrical shape. The intermediate portion 98 may be formed in a substantially bottomed tubular shape, for example.

[0129] Preferably, the connecting portion 97 has a flange portion 97B. The flange portion 98B is formed at one end of the connecting portion 97 in a direction parallel to the central axis C1 of the fastener 36. The flange portion 97B is disposed between the base portion 62 of the first mounting portion 96A and the support portion 38 in a state in which the mounting portion 44 is attached to the support portion 38 of the human-powered vehicle 10 by the fastener 36. The flange portion 97B has an outer shape larger than the diameter of the hole 62A formed in the base portion 62 of the first mounting portion 96A. In a state in which a part of the connecting portion 97 is disposed on the inner periphery of the hole 62A formed in the base portion 62 of the first mounting portion 96A, the flange portion 97B is located outside the hole 62A formed in the base portion 62 of the first mounting portion 96A. The flange portion 97B is configured to face the support portion 38 in a state in which the component 40 is attached to the support portion 38 by the fastener 36. The flange portion 97B is configured to contact the support portion 38 in a state in which the component 40 is attached to the support portion 38 by the fastener 36. The flange portion 97B is formed in an annular shape. The flange portion 97B is formed in a substantially annular shape. The flange portion 97B preferably includes at least one flat surface 97F on an outer peripheral surface 97E around the central axis C1 of the fastener 36. In the present embodiment, the outer peripheral surface 97E of the flange portion 97B includes a plurality of flat surfaces 97F. Two flat surfaces 97F of the plurality of flat surfaces 97F are symmetrically disposed around the central axis C1 of the fastener 36, and the other two flat surfaces 97F of the plurality of flat surfaces 97F are symmetrically disposed around the central axis C1 of the fastener 36. The support portion 38 of the frame 18 may have an abutment portion configured to abut one of the at least one flat surface 97F of the outer peripheral surface 97E of the flange portion 97B. In this case, a flat surface 97F of an outer peripheral surface 97E of the flange portion 97B abuts against the abutting portion of the support portion 38, thereby preventing rotation of the connecting portion 97 about the central axis C1 of the fastener 36. A tool may be engaged with the outer peripheral surface 97E of the flange portion 97B.

[0130] In this embodiment, the intermediate portion 98 is detachably provided on the connecting portion 97. Preferably, at least a part of the intermediate portion 98 covers at least a part of the outer circumferential surface of the cylindrical portion of the connecting portion 97. Preferably, the intermediate portion 98 is configured to cover a portion of the second base portion 63B that is not covered by the first base portion 63A. The intermediate portion 98 is configured to cover, for example, an area where the first base portion 63A and the second base portion 63B contact each other. In this embodiment, the intermediate portion 98 has a flange portion 98E. The flange portion 98E is formed at one end of the intermediate portion 98 in a direction parallel to the central axis C1 of the fastener 36. The flange portion 98E is disposed between the flange portion 97B of the connecting portion 97 and the base portion 62 in a direction parallel to the central axis C1 of the fastener 36. The flange portion 98E contacts the first end surface 63E of the second base portion 63B and covers the first end surface 63E of the second base portion 63B. The flange portion 98E may be formed to contact the first end surface 63E of the second base portion 63B and a portion of the first base portion 63A adjacent to the first end surface 63E of the second base portion 63B. The flange portion 98E may be bonded to the first end surface 63E of the second base portion 63B and a portion of the first base portion 63A adjacent to the first end surface 63E of the second base portion 63B via an adhesive 99. This makes it difficult for water to enter the interface between the first base portion 63A and the second base portion 63B, and can suppress electrical corrosion at the interface between the first base portion 63A and the second base portion 63B. In a direction parallel to the central axis C1 of the fastener 36, the length of the portion of the intermediate portion 98 excluding the flange portion 98E is longer than the length of the second base portion 63B. The intermediate portion 98 may be formed to contact the second end surface 63F of the second base portion 63B and a portion of the first base portion 63A adjacent to the second end surface 63F of the second base portion 63B. The intermediate portion 98 may be bonded to the second end surface 63F of the second base portion 63B and a portion of the first base portion 63A adjacent to the second end surface 63F of the second base portion 63B via an adhesive 99. This makes it difficult for water to enter the interface between the first base portion 63A and the second base portion 63B, and makes it possible to suppress electrical corrosion at the interface between the first base portion 63A and the second base portion 63B.Before the component 40 is attached to the support portion 38 by the fastener 36, the flange portion 97B of the connecting portion 97 and the flange portion 98E of the intermediate portion 98 are in contact with each other.

[0131] The flange portion 98E is formed in an annular shape. The flange portion 98E is formed in a substantially annular shape. The flange portion 98E includes, for example, at least one flat surface 98G on an outer peripheral surface 98F around the central axis C1 of the fastener 36. In the present embodiment, the outer peripheral surface 98F of the flange portion 98E includes a plurality of flat surfaces 98G. Two flat surfaces 98G among the plurality of flat surfaces 98G are symmetrically disposed around the central axis C1 of the fastener 36, and the other two flat surfaces 98G among the plurality of flat surfaces 98G are symmetrically disposed around the central axis C1 of the fastener 36. A tool may be engaged with the outer peripheral surface 98F of the flange portion 98E.

[0132] A flat surface 98G of the outer peripheral surface 98F of the flange portion 98E may abut against the abutment portion of the support portion 38. In this case, when the fastener 36 is attached, the rotation of the middle portion 98 of the central axis C1 of the fastener 36 is prevented. In this embodiment, the outer shape of the flange portion 98E of the middle portion 98 is equal to the outer shape of the flange portion 97B of the connecting portion 97 when viewed parallel to the central axis C1 of the fastener 36. In this embodiment, the middle portion 98 and the connecting portion 97 are joined so that the outer shape of the flange portion 97B of the middle portion 98 and the outer shape of the flange portion 98E of the connecting portion 97 overlap when viewed parallel to the central axis C1 of the fastener 36. The outer shape of the flange portion 98E of the middle portion 98 may be larger or smaller than the flange portion 97B of the connecting portion 97. If, when viewed parallel to the central axis C1 of the fastener 36, the outer shape of the flange portion 98E of the intermediate portion 98 is equal to the outer shape of the flange portion 97B of the connecting portion 97, when attaching the connecting portion 97 and the intermediate portion 98 to the base portion 62 using a tool, the tool can be brought into contact with the flange portions 98E and 97B to perform the work, thereby preventing undesirable movement of the connecting portion 97 relative to the intermediate portion 98.

[0133] The bonding force between the intermediate portion 98 and the base portion 62 is greater than the bonding force between the intermediate portion 98 and the connecting portion 97. When the component 40 is attached to the support portion 38 by the fastener 36, the fastener 36 is connected to the connecting portion 97 and the fastener 36 is tightened. In this case, if there is a gap between the connecting portion 97 and the frame 18 as shown in FIG. 16, the intermediate portion 98 does not move relative to the base portion 62 in a direction parallel to the central axis C1 of the fastener 36, but the connecting portion 97 moves relative to the intermediate portion 98, and the connecting portion 97 comes into contact with the frame 18 as shown in FIG. 17. Since the relative position between the intermediate portion 98 and the base portion 62 does not change, the portion of the base portion 62 covered by the intermediate portion 98 is not exposed. Preferably, the intermediate portion 98 is bonded to the base portion 62 by an adhesive 99 provided in the hole 62A. The adhesive 99 can easily increase the bonding force between the intermediate portion 98 and the base portion 62. The type of adhesive 99 is not particularly limited, but includes, for example, at least one of an epoxy adhesive, an acrylic adhesive, and a hot melt adhesive. The adhesive 99 may be omitted.

[0134] Preferably, at least one of the knurling 98A contacting the base portion 62 and the protrusions contacting the base portion 62 is formed on at least a part of the outer periphery of the intermediate portion 98. In this embodiment, the knurling 98A contacting the base portion 62 is formed on at least a part of the outer periphery of the intermediate portion 98 around the central axis C1 of the fastener 36. The knurling 98A may be formed by a flat knurling or a cross-knurling. The knurling 98A is formed, for example, substantially over the entire circumference around the central axis C1 of the fastener 36. The knurling 98A may be formed, for example, intermittently at intervals around the central axis C1 of the fastener 36. When the intermediate portion 98 does not have the flange portion 98E, the width of the knurling 98A and the width of the protrusions are, for example, 100 percent (%) or less and 10 percent (%) or more of the width of the intermediate portion 98 in a direction parallel to the central axis C1 of the fastener 36. When the intermediate portion 98 has the flange portion 98E, the width of the knurling 98A and the width of the protrusion are, for example, 100 percent (%) or less and 10 percent (%) or more of the width of the portion of the intermediate portion 98 excluding the flange portion 98E in the direction parallel to the central axis C1 of the fastener 36. Preferably, the knurling 98A is formed by a flat knurling. In this embodiment, the knurling 98A has a plurality of protrusions that are spaced apart in the circumferential direction around the central axis C1 of the fastener 36 and extend in a direction parallel to the central axis C1 of the fastener 36. When the intermediate portion 98 has a protrusion that contacts the base portion 62, the protrusions that contact the base portion 62 may be formed so as to be continuous around the central axis C1 of the fastener 36, or may be formed so as to be discontinuously spaced apart around the central axis C1 of the fastener 36.

[0135] Preferably, the knurling 98A contacting the base portion 62 and at least one of the protrusions contacting the base portion 62 are provided at a position away from the opening of the hole 62A. Preferably, the knurling 98A and at least one of the protrusions have a first contact portion 98B and a second contact portion 98C. The first contact portion 98B and the second contact portion 98C are arranged at an interval in the extension direction of the hole 62A. The extension direction of the hole 62A includes a direction parallel to the central axis C1 of the fastener 36. In this embodiment, the intermediate portion 98 has a knurling 98A, and the knurling 98A has a first contact portion 98B and a second contact portion 98C. The first contact portion 98B and the second contact portion 98C are each formed by a flat knurling. In the outer periphery of the intermediate portion 98, the first contact portion 98B is provided at a position closer to the head 36B of the fastener 36 than the second contact portion 98C. At least a part of the adhesive 99 is provided between the first contact portion 98B and the second contact portion 98C. Preferably, in the outer periphery of the intermediate portion 98, the outer diameter between the first contact portion 98B and the second contact portion 98C is smaller than the maximum outer diameter of the portion where the first contact portion 98B and the second contact portion 98C are provided. For this reason, it is easy to arrange the adhesive 99 in the portion between the first contact portion 98B and the second contact portion 98C. A part of the adhesive 99 may be provided between the flange portion 98E of the intermediate portion 98 and the base portion 62. A part of the adhesive 99 may be provided between the knurling 98A and the base portion 62. Preferably, in the outer periphery of the intermediate portion 98, the maximum outer diameter of the third portion 98K excluding the flange portion 98E, the first portion 98H adjacent to the flange portion 98E, and the second portion 98J where the first contact portion 98B and the second contact portion 98C are provided is smaller than the maximum outer diameter of the second portion 98J. In a state in which the intermediate portion 98 is press-fitted into the base portion 62, preferably at least a portion of the second portion 98J is separated from the base portion 62. Preferably, the entire second portion 98J may be separated from the base portion 62. When at least a portion of the second portion 98J of the intermediate portion 98 is separated from the base portion 62, the adhesive 99 can be stably disposed between the second portion 98J and the base portion 62. Preferably, the hardness of the adhesive 99 in a cured state is equal to or less than the hardness of the intermediate portion 98.Preferably, the outer diameter of the portion adjacent to the first contact portion 98B and the outer diameter of the portion adjacent to the second contact portion 98C in the outer periphery of the intermediate portion 98 are smaller than the maximum outer diameter of the portion where the first contact portion 98B and the second contact portion 98C are provided. For example, in a direction parallel to the central axis C1 of the fastener 36, the width of the first contact portion 98B is larger than the width of the second contact portion 98C. In a direction parallel to the central axis C1 of the fastener 36, the width of the first contact portion 98B is, for example, 500 percent (%) or less of the width of the second contact portion 98C.

[0136] Preferably, at least a part of the outer periphery of the connecting portion 97 is formed with a knurl 97C that contacts the intermediate portion 98. The knurl 97C is formed, for example, substantially over the entire circumference around the central axis C1 of the fastener 36. The knurl 97C may be formed, for example, discontinuously at intervals around the central axis C1 of the fastener 36. When the connecting portion 97 does not have a flange portion 97B, the width of the knurl 97C in the direction parallel to the central axis C1 of the fastener 36 is, for example, 100 percent (%) or less and 10 percent (%) or more of the width of the connecting portion 97. When the connecting portion 97 has a flange portion 97B, the width of the knurl 97C in the direction parallel to the central axis C1 of the fastener 36 is, for example, 100 percent (%) or less and 10 percent (%) or more of the width of the connecting portion 97 excluding the flange portion 97B. The knurl 97C is formed by a flat knurl. In this embodiment, the knurling 97C has a plurality of protrusions 97G that are spaced apart in the circumferential direction around the central axis C1 of the fastener 36 and extend in a direction parallel to the central axis C1 of the fastener 36.

[0137] When the knurling 97C is provided on the connecting portion 97, preferably, the second knurling 98D that contacts the knurling 97C of the connecting portion 97 is formed on the inner periphery of the intermediate portion 98. When the knurling 97C is formed by a flat knurling, preferably, the second knurling 98D is formed by a flat knurling. The knurling 97C engages with the second knurling 98D. By forming the knurling 97C and the second knurling 98D by a flat knurling and engaging them, the movement of the connecting portion 97 in a direction parallel to the central axis C1 of the fastener 36 is permitted while suppressing the rotation of the connecting portion 97 around the central axis C1 of the fastener 36. In the direction parallel to the central axis C1 of the fastener 36, the width of the second knurling 98D may be equal to the width of the knurling 97C, may be larger than the width of the knurling 97C, or may be smaller than the width of the knurling 97C. Preferably, the second knurling 98D is formed on the inner periphery of the intermediate portion 98 except for the flange portion 97B. In a direction parallel to the central axis C1 of the fastener 36, the width of the second knurling 98D is, for example, 100 percent (%) or less and 10 percent (%) or more of the width of the intermediate portion 98.

[0138] For example, at least a part of the second knurling 98D of the intermediate portion 98 is provided at a position closer to the head 36B of the fastener 36 than the first contact portion 98B of the knurling 98A of the outer periphery in a direction parallel to the central axis C1 of the fastener 36. For example, at least a part of the second knurling 98D of the intermediate portion 98 is provided at a position closer to the head 36B of the fastener 36 than the center of the intermediate portion 98 in a direction parallel to the central axis C1 of the fastener 36. For example, at least a part of the knurling 97C of the connecting portion 97 is provided at a position closer to the head 36B of the fastener 36 than the first contact portion 98B of the knurling 98A of the intermediate portion 98. For example, at least a part of the knurling 97C of the connecting portion 97 is provided at a position closer to the head 36B of the fastener 36 than the center of the connecting portion 97 in a direction parallel to the central axis C1 of the fastener 36. Preferably, in a direction parallel to the central axis C1 of the fastener 36, at least a part of the outer periphery of the connecting portion 97, which is closer to the head 36B of the fastener 36 than the knurling 97C, contacts the inner periphery 98X of the intermediate portion 98. For example, the maximum inner diameter of the portion of the intermediate portion 98 where the second knurling 98D is provided is larger than the maximum inner diameter of the portion of the intermediate portion 98 farther from the head 36B of the fastener 36 than the second knurling 98D. For example, the maximum outer diameter of the portion of the connecting portion 97 where the knurling 97C is provided is larger than the maximum outer diameter of the portion of the connecting portion 97 farther from the head 36B of the fastener 36 than the knurling 97C. For example, the maximum outer diameter of the portion of the connecting portion 97 between the knurling 97C and the flange portion 97B is larger than the maximum outer diameter of the connecting portion 97 where the knurling 97C is provided.

[0139] In a process of attaching the component 40 to the support portion 38 with the fastener 36, if a gap is formed between the support portion 38 and the flange portion 97B of the connecting portion 97 as shown in FIG. 16, when the fastener 36 is tightened, the connecting portion 97 moves, and the flange portion 97B of the connecting portion 97 comes into contact with the connecting portion 97 as shown in FIG. 17. The flange portion 97B of the connecting portion 97 is configured to come into contact with the support portion 38 in a state in which the component 40 is attached to the support portion 38 with the fastener 36. By bringing the flange portion 97B into contact with the support portion 38, the base portion 62 is held to the frame 18 via the intermediate portion 98 and the connecting portion 97, and the base portion 62 can be electrically insulated from the frame 18. By forming the intermediate portion 98 such that at least a part of the second portion 98J is separated from the base portion 62, the amount of compression of the intermediate portion 98 in a state in which the connecting portion 97 is press-fitted into the intermediate portion 98 is reduced compared to when the second portion 98J is in contact with the base portion 62, and the press-fitting force between the connecting portion 97 and the intermediate portion 98 can be reduced. Reducing the press-fitting force between the connecting portion 97 and the intermediate portion 98 makes it easier to make the bonding force between the intermediate portion 98 and the base portion 62 greater than the bonding force between the intermediate portion 98 and the connecting portion 97.

[0140] Preferably, a third restricting portion 97D is formed on a surface 97X of the flange portion 97B facing the support portion 38. The third restricting portion 97D includes at least one protruding portion 97Y. In this embodiment, the third restricting portion 97D includes a plurality of protruding portions 97Y. The plurality of protruding portions 97Y are arranged at intervals around the central axis C1 of the fastener 36. The plurality of protruding portions 97Y extend in a radial direction with respect to the central axis C1 of the fastener 36. Preferably, a first end surface 97Z and a second end surface 97W of the protruding portion 97Y around the central axis C1 of the fastener 36 are each substantially a quadrangular flat surface, and the protruding portion 97Y is formed by a triangular prism tapered from the base end toward the free end. For example, of the first end face 97Z and the second end face 97W of the protrusion 97Y, the one disposed downstream in the rotation direction when the fastener 36 is connected to the connecting portion 97 is formed substantially parallel to the central axis C1 of the fastener 36. When the flange portion 97B and the support portion 38 come into contact with each other, the protrusion 97Y of the third restricting portion 97D engages with the frame 18 as a wedge, thereby restricting the rotation of the intermediate portion 98 relative to the support portion 38. The shape of the third restricting portion 97D may be, for example, a recessed portion, and may be any shape as long as it is possible to restrict the rotation of the intermediate portion 98 relative to the support portion 38.

[0141] The first base portion 63A included in the first mounting portion 96A includes a first material having a first standard electrode potential. Preferably, the first base portion 63A included in the first mounting portion 96A includes a magnesium alloy. At least a portion of the housing 42 is integrally formed with the first base portion 63A as a single member. At least one of an inner periphery defining the hole 62A of the second base portion 63B and an outer periphery of the second base portion 63B may include at least one of a metal oxide film and a coating film.

[0142] The connecting portion 97 includes a second material having a second standard electrode potential. Preferably, the second material includes an aluminum alloy. In the present embodiment, the connecting portion 97 is formed by an aluminum alloy. The aluminum alloy is, for example, ADC12. Preferably, the first standard electrode potential is different from the second standard electrode potential.

[0143] The second attachment portion 96B includes a metal base portion 62, a metal connecting portion 100, and an intermediate portion 101. The intermediate portion 101 is formed of a separate member from the connecting portion 100. Preferably, the intermediate portion 101 is formed of a resin material. The intermediate portion 101 is formed of a fourth material, similar to the intermediate portion 98. The intermediate portion 101 may be formed of rubber.

[0144] The connecting portion 100 is provided on the base portion 62 and configured to be connected to the fastener 36. The intermediate portion 101 is provided between the connecting portion 100 and the base portion 62. Preferably, the intermediate portion 101 is insert molded into the connecting portion 100. Preferably, the intermediate portion 101 is press-fitted into the hole 62A of the base portion 62. The connecting portion 100 includes a second female thread portion 100A configured to be connected to the fastener 36. The second female thread portion 100A is configured to be connected to the male thread portion 36A of the fastener 36. Preferably, at least a portion of the connecting portion 100 is formed in a tubular shape. The connecting portion 100 is formed, for example, in a substantially cylindrical shape. The connecting portion 100 may be formed, for example, in a substantially bottomed tubular shape. The second female thread portion 100A is provided on the inner periphery of the connecting portion 100. The intermediate portion 101 is provided on the outer periphery of the connecting portion 100. At least a part of the intermediate portion 101 is formed in a tubular shape. The intermediate portion 101 is formed in a substantially cylindrical shape. The intermediate portion 101 may be formed in a substantially bottomed tubular shape, for example.

[0145] Preferably, the connecting portion 100 has a flange portion 100B. The flange portion 100B is formed at one end of the connecting portion 100 in a direction parallel to the central axis C1 of the fastener 36. The flange portion 100B is disposed between the base portion 62 of the second mounting portion 96B and the support portion 38 in a state in which the mounting portion 44 is attached to the support portion 38 of the human-powered vehicle 10 by the fastener 36. The flange portion 100B has an outer diameter larger than the diameter of the hole 62A formed in the base portion 62 of the second mounting portion 96B. In a state in which a part of the connecting portion 100 is disposed on the inner periphery of the hole 62A in the base portion 62 of the second mounting portion 96B, the flange portion 100B is located outside the hole 62A in the base portion 62 of the second mounting portion 96B. The flange portion 100B is configured to face the support portion 38 in a state in which the component 40 is attached to the support portion 38 by the fastener 36. The flange portion 100B is configured to contact the support portion 38 in a state in which the component 40 is attached to the support portion 38 by the fastener 36. The flange portion 100B is formed in an annular shape. The flange portion 100B is formed in a substantially annular shape. The flange portion 100B preferably includes at least one flat surface 100F on an outer peripheral surface 100E around the central axis C1 of the fastener 36. In the present embodiment, the outer peripheral surface 100E of the flange portion 100B includes a plurality of flat surfaces 100F. Two flat surfaces 100F of the plurality of flat surfaces 100F are symmetrically disposed around the central axis C1 of the fastener 36, and the other two flat surfaces 100F of the plurality of flat surfaces 100F are symmetrically disposed around the central axis C1 of the fastener 36. Preferably, the support portion 38 of the frame 18 may have an abutment portion configured to abut one of the at least one flat surface 100F of the outer peripheral surface 100E of the flange portion 100B. In this case, flat surface 100F of outer peripheral surface 100E of flange portion 100B abuts against the abutting portion of support portion 38, thereby preventing rotation of coupling portion 100 about central axis C1 of fastener 36 when fastener 36 is attached. A tool may be engaged with outer peripheral surface 100E of flange portion 100B.

[0146] In this embodiment, the intermediate portion 101 is provided in an undetachable manner on the connecting portion 100. Preferably, at least a part of the intermediate portion 101 covers at least a part of the outer circumferential surface of the cylindrical portion of the connecting portion 100. Preferably, the intermediate portion 101 is configured to cover a portion of the second base portion 63B that is not covered by the first base portion 63A. The intermediate portion 101 is configured to cover, for example, an area where the first base portion 63A and the second base portion 63B contact each other. In this embodiment, the intermediate portion 101 has a flange portion 101E. The flange portion 101E is formed at one end of the intermediate portion 101 in a direction parallel to the central axis C1 of the fastener 36. The flange portion 101E is disposed between the flange portion 100B of the connecting portion 100 and the base portion 62 in a direction parallel to the central axis C1 of the fastener 36. The flange portion 101E contacts the first end surface 63E of the second base portion 63B and covers the first end surface 63E of the second base portion 63B. The flange portion 101E may be formed to contact the first end surface 63E of the second base portion 63B and a portion of the first base portion 63A adjacent to the first end surface 63E of the second base portion 63B. The flange portion 101E may be bonded to the first end surface 63E of the second base portion 63B and a portion of the first base portion 63A adjacent to the first end surface 63E of the second base portion 63B via an adhesive 99. This makes it difficult for water to enter the interface between the first base portion 63A and the second base portion 63B, and can suppress electrical corrosion at the interface between the first base portion 63A and the second base portion 63B. In a direction parallel to the central axis C1 of the fastener 36, the length of the portion of the intermediate portion 101 excluding the flange portion 101E is longer than the length of the second base portion 63B. The intermediate portion 101 may be formed to contact the second end surface 63F of the second base portion 63B and a portion of the first base portion 63A adjacent to the second end surface 63F of the second base portion 63B. The intermediate portion 101 may be bonded to the second end surface 63F of the second base portion 63B and a portion of the first base portion 63A adjacent to the second end surface 63F of the second base portion 63B via an adhesive 99. This makes it difficult for water to enter the interface between the first base portion 63A and the second base portion 63B, and electrical corrosion at the interface between the first base portion 63A and the second base portion 63B can be suppressed.Before the component 40 is attached to the support portion 38 by the fastener 36, the flange portion 100B of the connecting portion 100 and the flange portion 101E of the intermediate portion 101 are in contact with each other.

[0147] The flange portion 101E is formed in an annular shape. The flange portion 101E is formed in a substantially annular shape. The flange portion 101E includes, for example, at least one flat surface 101G on an outer peripheral surface 101F around the central axis C1 of the fastener 36. In this embodiment, the outer peripheral surface 101F of the flange portion 101E includes a plurality of flat surfaces 101G. Two flat surfaces 101G among the plurality of flat surfaces 101G are arranged symmetrically around the central axis C1 of the fastener 36. The flat surface 101G of the outer peripheral surface 101F of the flange portion 101E may abut against the abutting portion of the support portion 38. In this case, when the fastener 36 is attached, the rotation of the middle portion 101 around the central axis C1 of the fastener 36 is prevented. A tool may be engaged with the outer peripheral surface 101F of the flange portion 101E. In this embodiment, the flange portion 101E of the intermediate portion 101 covers at least a part of the outer circumferential surface 100E of the flange portion 100B of the connecting portion 100. In this embodiment, the flange portion 101E of the intermediate portion 101 covers the outer circumferential surface 100E of the flange portion 100B of the connecting portion 100 so that at least a part of two flat surfaces 100F of the multiple flat surfaces 100F of the connecting portion 100 is exposed. For example, one of the two flat surfaces 100F of the connecting portion 100 and one of the two flat surfaces 101G of the intermediate portion 101 are provided on the same plane. For example, the other one of the two flat surfaces 100F of the connecting portion 100 and the other one of the two flat surfaces 101G of the intermediate portion 101 are provided on the same plane. The flange portion 101E of the intermediate portion 101 does not have to cover the outer circumferential surface of the flange portion 100B of the connecting portion 100.

[0148] Preferably, the intermediate portion 101 is adhered to the base portion 62 by an adhesive 99 provided in the hole 62A. The adhesive 99 can easily increase the bonding strength between the intermediate portion 101 and the base portion 62. The adhesive 99 may be omitted.

[0149] Preferably, at least one of a knurling that contacts the base portion 62 and a protrusion 101A that contacts the base portion 62 is formed on at least a part of the outer periphery of the intermediate portion 101. In this embodiment, the protrusion 101A that contacts the base portion 62 is formed on at least a part of the outer periphery of the intermediate portion 101 around the central axis C1 of the fastener 36. The protrusion 101A is formed, for example, substantially over the entire circumference around the central axis C1 of the fastener 36. The protrusion 101A may be formed, for example, intermittently at intervals around the central axis C1 of the fastener 36. When the intermediate portion 101 does not have a flange portion 101E, the width of the protrusion 101A and the width of the knurling are, for example, 100 percent (%) or less and 10 percent (%) or more of the width of the intermediate portion 101 in a direction parallel to the central axis C1 of the fastener 36. When the intermediate portion 101 has the flange portion 101E, the width of the protruding portion 101A and the width of the knurling are, for example, 100 percent (%) or less and 10 percent (%) or more of the width of the portion of the intermediate portion 101 excluding the flange portion 101E in the direction parallel to the central axis C1 of the fastener 36. The knurling may be formed by a flat knurling or a twill knurling. In this embodiment, the protruding portion 101A has an annular convex portion 101X that is continuous around the central axis C1 of the fastener 36. When the intermediate portion 101 has a knurling that contacts the base portion 62, the knurling that contacts the base portion 62 may be formed so as to be continuous around the central axis C1 of the fastener 36, or may be formed at intervals so as to be discontinuous around the central axis C1 of the fastener 36.

[0150] Preferably, at least one of the knurling contacting the base portion 62 and the protruding portion 101A contacting the base portion 62 is provided at a position away from the opening of the hole 62A. Preferably, at least one of the knurling and the protruding portion 101A has a first contact portion 101B and a second contact portion 101C. The first contact portion 101B and the second contact portion 101C are arranged at an interval in the extending direction of the hole 62A. The extending direction of the hole 62A includes a direction parallel to the central axis C1 of the fastener 36. In this embodiment, the intermediate portion 101 has a protruding portion 101A, and the protruding portion 101A has a first contact portion 101B and a second contact portion 101C. The first contact portion 101B and the second contact portion 101C are each formed by a convex portion. Preferably, the first contact portion 101B is an enlarged diameter portion. Preferably, the second contact portion 101C is an enlarged diameter portion. In the outer periphery of the intermediate portion 101, the first contact portion 101B is provided at a position closer to the head portion 36B of the fastener 36 than the second contact portion 101C. At least a part of the adhesive 99 is provided between the first contact portion 101B and the second contact portion 101C. Preferably, in the outer periphery of the intermediate portion 101, the outer diameter between the first contact portion 101B and the second contact portion 101C is smaller than the maximum outer diameter of the portion where the first contact portion 101B and the second contact portion 101C are provided. For this reason, it is easy to arrange the adhesive 99 in the portion between the first contact portion 101B and the second contact portion 101C. A part of the adhesive 99 may be provided between the flange portion 101E of the intermediate portion 101 and the base portion 62. A part of the adhesive 99 may be provided between the protruding portion 101A and the base portion 62. Preferably, in the outer periphery of the intermediate portion 101, the maximum outer diameter of the third portion 101W excluding the flange portion 101E, the first portion 101Y adjacent to the flange portion 101E, and the second portion 101Z in which the first contact portion 101B and the second contact portion 101C are provided is smaller than the maximum outer diameter of the second portion 101Z. In a state in which the intermediate portion 101 is press-fitted into the base portion 62, preferably, at least a portion of the second portion 101Z is separated from the base portion 62. Preferably, the entire second portion 101Z may be separated from the base portion 62. When at least a portion of the second portion 101Z of the intermediate portion 101 is separated from the base portion 62, the adhesive 99 can be stably disposed between the second portion 101Z and the base portion 62.Preferably, in the outer circumferential portion 101V of the intermediate portion 101, the outer diameter of the portion adjacent to the first contact portion 101B and the outer diameter of the portion adjacent to the second contact portion 101C are smaller than the maximum outer diameter of the portion where the first contact portion 101B and the second contact portion 101C are provided. For example, in a direction parallel to the central axis C1 of the fastener 36, the width of the first contact portion 101B is larger than the width of the second contact portion 101C. In a direction parallel to the central axis C1 of the fastener 36, the width of the first contact portion 101B is, for example, 500 percent (%) or less of the width of the second contact portion 101C.

[0151] Preferably, at least a part of the outer periphery of the connecting portion 100 is formed with a knurl 100C that contacts the intermediate portion 101. The knurl 100C is formed, for example, substantially over the entire circumference around the central axis C1 of the fastener 36. The knurl 100C may be formed, for example, intermittently at intervals around the central axis C1 of the fastener 36. When the connecting portion 100 does not have a flange portion 100B, the width of the knurl 100C in the direction parallel to the central axis C1 of the fastener 36 is, for example, 100 percent (%) or less and 10 percent (%) or more of the width of the connecting portion 100. When the connecting portion 100 has a flange portion 100B, the width of the knurl 100C in the direction parallel to the central axis C1 of the fastener 36 is, for example, 100 percent (%) or less and 10 percent (%) or more of the width of the connecting portion 100 excluding the flange portion 100B. In this embodiment, the knurling 100C has a plurality of protrusions 100X that are spaced apart from one another in the circumferential direction around the central axis C1 of the fastener 36 and extend in a direction parallel to the central axis C1 of the fastener 36.

[0152] When the knurling 100C is provided on the connecting portion 100, preferably, the second knurling 101D that contacts the knurling 100C of the connecting portion 100 is formed on the inner periphery of the intermediate portion 101. When the knurling 100C is formed by a flat knurling, preferably, the second knurling 101D is formed by a flat knurling. The knurling 100C engages with the second knurling 101D. In a direction parallel to the central axis C1 of the fastener 36, the width of the second knurling 101D may be equal to the width of the knurling 100C, may be larger than the width of the knurling 100C, or may be smaller than the width of the knurling 100C. Preferably, the second knurling 101D is formed on the inner periphery of the intermediate portion 101 except for the flange portion 100B. In a direction parallel to the central axis C1 of the fastener 36, the width of the second knurling 101D is, for example, 100 percent (%) or less and 10 percent (%) or more of the width of the middle portion 101.

[0153] For example, at least a part of the second knurling 101D of the intermediate portion 101 is provided at a position farther from the head 36B of the fastener 36 than the second contact portion 101C of the protruding portion 101A of the outer circumferential portion in a direction parallel to the central axis C1 of the fastener 36. For example, at least a part of the knurling 100C of the connecting portion 100 is provided at a position farther from the head 36B of the fastener 36 than the first contact portion 101B of the protruding portion 101A of the intermediate portion 101 in a direction parallel to the central axis C1 of the fastener 36. For example, at least a part of the knurling 100C of the connecting portion 100 is provided at a position farther from the head 36B of the fastener 36 than the center of the connecting portion 100 in a direction parallel to the central axis C1 of the fastener 36. Preferably, in a direction parallel to the central axis C1 of the fastener 36, at least a part of the connecting portion 100, which is closer to the head 36B of the fastener 36 than the knurling 100C, contacts the inner periphery 101U of the intermediate portion 101. For example, the maximum inner diameter of the portion of the intermediate portion 101 where the second knurling 101D is provided is smaller than the maximum inner diameter of the portion of the intermediate portion 101 closer to the head 36B of the fastener 36 than the second knurling 101D. For example, the maximum outer diameter of the portion of the connecting portion 100 where the knurling 100C is provided is smaller than the maximum outer diameter of the portion of the connecting portion 100 closer to the head 36B of the fastener 36 than the knurling 100C.

[0154] Preferably, a fourth restricting portion 100S is formed on the outer periphery of the connecting portion 100. The fourth restricting portion 100S includes at least one recess 100T. The inner periphery of the intermediate portion 101 includes a fifth restricting portion 101S that contacts the fourth restricting portion 100S. The fifth restricting portion 101S includes at least one convex portion 101T that contacts at least one of the at least one recess 100T. The fourth restricting portion 100S is disposed between the knurling 100C and the flange portion 100B. The at least one convex portion 101T of the fifth restricting portion 101S is disposed between the second knurling 101D and the flange portion 101E. In a direction parallel to the central axis C1 of the fastener 36, the fourth restricting portion 100S and the fifth restricting portion 101S come into contact with each other, and around the central axis C1 of the fastener 36, the fourth restricting portion 100S and the fifth restricting portion 101S come into contact with each other, so that the relative movement with the intermediate portion 101 is restricted. Preferably, the fourth restricting portion 100S and the fifth restricting portion 101S have complementary shapes. The fourth restricting portion 100S may include at least one convex portion instead of or in addition to the at least one concave portion 100T. The fifth restricting portion 101S may include at least one concave portion instead of or in addition to the at least one convex portion 101T. The fourth restricting portion 100S and the fifth restricting portion 101S may be omitted. The second knurling 101D of the intermediate portion 101 and the knurling 100C of the connecting portion 100 may be omitted.

[0155] The first base portion 63A included in the second mounting portion 96B includes a first material having a first standard electrode potential. Preferably, the first base portion 63A included in the second mounting portion 96B includes a magnesium alloy. At least a portion of the housing 42 is integrally formed with the first base portion 63A as a single member. At least one of an inner periphery defining the hole 62A of the second base portion 63B and an outer periphery of the second base portion 63B may include at least one of a metal oxide film and a coating film.

[0156] The connecting portion 100 includes a second material having a second standard electrode potential. Preferably, the second material includes an aluminum alloy. In this embodiment, the connecting portion 100 is formed by an aluminum alloy. The aluminum alloy is, for example, ADC12. Preferably, the first standard electrode potential is different from the second standard electrode potential.

[0157] <Fourth embodiment> A component 40 of the fourth embodiment will be described with reference to Fig. 24 to Fig. 28. The component 40 of the fourth embodiment is similar to the component 40 of the first embodiment except for the difference in the configuration of the reducer 40B. Therefore, the same reference numerals as in the first embodiment are used for the configurations common to the first embodiment, and duplicated descriptions will be omitted.

[0158] The component 40 of the present embodiment includes a housing 42, a motor 46 provided in the housing 42, and a reducer 40B coupled to the motor 46. The reducer 40B includes a plurality of gears 110.

[0159] The reducer 40B includes a first rotor 112, a first rotating shaft 114, and a second rotor 116. The diameter of the first rotor 112 is larger than the diameter of the second rotor 116. The first rotor 112 is provided on the output section 40A so as to rotate integrally with the output section 40A. The first rotor 112 and the output section 40A are integrally formed as a single member, for example. The first rotor 112 and the output section 40A are formed of, for example, metal. The first rotor 112 and the output section 40A may be formed as separate bodies and fixed so as not to rotate relative to each other. The first rotor 112 may be formed of, for example, resin. The first rotor shaft 114 has a rotation axis CA different from the rotation axis CM of the motor 46. The rotation axis CA is substantially parallel to the rotation axis CM of the motor 46. The second rotating body 116 is provided on the first rotating shaft 114 via the third one-way clutch 40Y, and is connected to the first rotating body 112 directly or via a ring member. In this embodiment, the second rotating body 116 is a gear having teeth provided on its outer periphery, and the first rotating body 112 is a gear having teeth provided on its outer periphery. The second rotating body 116 and the first rotating body 112 are directly connected to each other by meshing the teeth of the second rotating body 116 with the teeth of the first rotating body 112. The first rotating body 112 and the second rotating body 116 may be indirectly connected to each other by a ring member. The ring member includes, for example, a belt or a pulley. For example, the first rotating body 112 and the second rotating body 116 may be pulleys, and the ring member may be a belt. For example, the first rotating body 112 and the second rotating body 116 may be sprockets, and the ring member may be a chain. The first rotating shaft 114 is supported by the housing 42 via a pair of fourth bearings 41D so as to be rotatable relative to the housing 42. The pair of fourth bearings 41D respectively support both axial ends of the first rotating shaft 114. One of the pair of fourth bearings 41D is supported in a recess provided in a first side surface portion of the housing 42. The other of the pair of fourth bearings 41D is supported in a recess provided in an inner periphery of a second side surface portion of the housing 42. The pair of fourth bearings 41D may be ball bearings, roller bearings, or plain bearings. The first rotating shaft 114 supports the second rotating body 116. The first rotating shaft 114 is arranged coaxially with the second rotating body 116.The second rotor 116 is formed in an annular shape and is disposed radially outward of the first rotor shaft 114. The third one-way clutch 40Y may be provided between the third rotor 122 and the first rotor shaft 114, instead of between the second rotor 116 and the first rotor shaft 114.

[0160] The reducer 40B includes, for example, a first reduction gear part 118 and a second reduction gear part 120. The first reduction gear part 118 includes a first rotating body 112, a first rotating shaft 114, and a second rotating body 116. The second reduction gear part 120 is provided between the motor 46 and the first reduction gear part 118 in the first power transmission path. Preferably, the second reduction gear part 120 includes a third rotating body 122, a second rotating shaft 124, and a fourth rotating body 126. The diameter of the third rotating body 122 is larger than the diameter of the fourth rotating body 126. The third rotating body 122 is configured to rotate integrally with the first rotating shaft 114, and has a smaller diameter than the second rotating body 116. The third rotating body 122 and the first rotating shaft 114 are formed separately and fixed so as not to rotate relative to each other. The first rotating shaft 114 is formed, for example, of a metal. The third rotating body 122 is formed of, for example, resin or metal. The third rotating body 122 and the first rotating shaft 114 may be integrally formed as a single member. The second rotating body 116 and the third rotating body 122 are disposed between a pair of fourth bearings 41D in the axial direction of the first rotating shaft 114. The second rotating body 116 and the third rotating body 122 are disposed adjacent to the pair of fourth bearings 41D, respectively. The fourth rotating body 126 is configured to rotate integrally with the second rotating shaft 124, and is connected to the third rotating body 122 directly or via a ring member. In this embodiment, the fourth rotating body 126 is a gear having teeth provided on its outer periphery, and the third rotating body 122 is a gear having teeth provided on its outer periphery. The teeth of the fourth rotating body 126 and the teeth of the third rotating body 122 mesh with each other, so that the fourth rotating body 126 and the third rotating body 122 are directly connected to each other. The second rotating shaft 124 has a rotation axis CB different from the rotation axes CM and CA. The rotation axis CB is substantially parallel to the rotation axes CM and CA. The second rotating shaft 124 is supported by the housing 42 via a pair of fifth bearings 41E so as to be rotatable relative to the housing 42. The pair of fifth bearings 41E respectively support both ends of the second rotating shaft 124 in the axial direction. The fifth bearings 41E may be ball bearings, roller bearings, or plain bearings.

[0161] In this embodiment, the reducer 40B further includes a third reduction portion 128. The third reduction portion 128 includes a fifth rotating body 130 and a sixth rotating body 132. The diameter of the fifth rotating body 130 is larger than the diameter of the sixth rotating body 132. The fifth rotating body 130 is disposed on the second side surface portion side of the housing 42 with respect to the fourth rotating body 126 in the axial direction of the input rotating shaft 12A. The fifth rotating body 130 is provided on the second rotating shaft 124 so as to rotate integrally with the second rotating shaft 124. The sixth rotating body 132 is provided on the output shaft 46A of the motor 46 so as to rotate integrally with the output shaft 46A. The fourth rotating body 126 and the fifth rotating body 130 are disposed between a pair of fifth bearings 41E in the axial direction of the second rotating shaft 124. The fourth rotating body 126 and the fifth rotating body 130 are disposed adjacent to the pair of fifth bearings 41E, respectively. The sixth rotating body 132 may be formed integrally with the output shaft 46A of the motor 46 as a single member, or may be formed separately from the output shaft 46A of the motor 46 and coupled to the output shaft 46A. The sixth rotating body 132 is formed of, for example, metal or resin. The output shaft 46A of the motor 46 is formed of, for example, metal. In this embodiment, the sixth rotating body 132 is a gear having teeth on its outer periphery, and the fifth rotating body 130 is a gear having teeth on its outer periphery. The teeth of the sixth rotating body 132 and the teeth of the fifth rotating body 130 mesh with each other, thereby directly connecting the sixth rotating body 132 and the fifth rotating body 130. When the first rotating body 112, the second rotating body 116, the third rotating body 122, the fourth rotating body 126, the fifth rotating body 130, and the sixth rotating body 132 are each a gear, at least a pair of gears that mesh with each other may be spur gears or helical gears.

[0162] In this embodiment, the multiple gears 110 include a first rotating body 112, a second rotating body 116, a third rotating body 122, a fourth rotating body 126, a fifth rotating body 130, and a sixth rotating body 132. In this embodiment, the teeth portion 110A of at least one gear 110 of the multiple gears 110 includes a thermosetting resin. Preferably, the thermosetting resin includes at least one of polyaminoamide, phenol, and polyimide. Preferably, the teeth portion 110A includes reinforcing fibers embedded in the thermosetting resin. Preferably, the reinforcing fibers include at least one of glass fibers, aramid fibers, and potassium titanate fibers.

[0163] In this embodiment, at least one tooth portion 110A of the multiple gears 110 includes a thermosetting resin. In this embodiment, a tooth portion 136A of the fifth rotating body 130 includes a thermosetting resin. The multiple gears 110 include a first gear 134 provided on the output shaft 46A and a second gear 136 meshing with the first gear 134. In this embodiment, the first gear 134 is the sixth rotating body 132. In this embodiment, the second gear 136 is the fifth rotating body 130. The multiple gears 110 include a third gear 138 that rotates integrally with the second gear 136, and the third gear 138 is formed integrally with the shaft portion 136B of the second gear 136 as a single member. In this embodiment, the third gear 138 is the fourth rotating body 126. In this embodiment, the tooth portion 110A of at least one gear 110 of the multiple gears 110 is the tooth portion 136A of the second gear 136. In this embodiment, the shaft portion 136B is the second rotating shaft 124. The tooth portion 136A of the second gear 136 includes a thermosetting resin. In this embodiment, the first gear 134 is made of metal. In this embodiment, the third gear 138 is made of metal.

[0164] Preferably, the second gear 136 includes a shaft portion 136B and a tooth portion 136A that is configured separately from the shaft portion 136B and is provided on the shaft portion 136B so as to rotate integrally with the shaft portion 136B. Preferably, the shaft portion 136B is formed of metal. Preferably, the shaft portion 136B is formed by a hollow shaft. The shaft portion 136B may be formed by a solid shaft. The tooth portion 136A is formed in an annular shape and has a first connecting portion 140 on an inner peripheral portion 137B that is connected to the shaft portion 136B. The tooth portion 136A includes an outer peripheral portion 137A, an inner peripheral portion 137B, and an intermediate portion 137C between the outer peripheral portion 137A and the inner peripheral portion 137B. Teeth are formed on the outer peripheral portion 137A of the tooth portion 136A. In the axial direction of the shaft portion 136B, a width W1 of an inner peripheral portion 137B of the teeth portion 136A is smaller than a width W2 of an outer peripheral portion 137A of the teeth portion 136A.

[0165] In the axial direction of the shaft portion 136B, the width W3 of the intermediate portion 137C of the tooth portion 136A is smaller than the width W2 of the outer peripheral portion 137A of the tooth portion 136A. By making the width W3 of the intermediate portion 137C and the width W1 of the inner peripheral portion 137B smaller than the width W2 of the outer peripheral portion 137A, the second gear 136 can be made lighter. The inner peripheral portion 137B may be formed with at least one hole 137D extending in the axial direction of the shaft portion 136B. The at least one hole 137D may be a through hole or a blind hole. When the at least one hole 137D includes a plurality of holes 137D, the plurality of holes 137D preferably have the same shape, are equally spaced around the axis of the shaft portion 136B, and are arranged at positions that are rotationally symmetrical around the axis of the shaft portion 136B. By forming at least one hole 137D, the second gear 136 can be made lighter. Preferably, the width W2 is 10% or more and 90% or less of the width W1 and the width W3. When viewed from a direction perpendicular to the axial direction of the shaft portion 136B, the inner peripheral portion 137B of the teeth portion 136A is disposed between both end faces of the outer peripheral portion 137A of the teeth portion 136A. When viewed from a direction perpendicular to the axial direction of the shaft portion 136B, the middle portion 137C of the teeth portion 136A is disposed between both end faces of the outer peripheral portion 137A of the teeth portion 136A. In this embodiment, the width W1 and the width W3 are equal. The width W1 may be smaller or larger than the width W3. The teeth portion 136A is a single member.

[0166] A first bearing connecting portion 136Y and a second bearing connecting portion 136Z are provided at both axial ends 136X of the shaft portion 136B, respectively, which are connected to a pair of fifth bearings 41E. The diameters of the first bearing connecting portion 136Y and the second bearing connecting portion 136Z are smaller than the diameters of the shaft portion 136B excluding the first bearing connecting portion 136Y and the second bearing connecting portion 136Z. In this embodiment, the diameter of the first bearing connecting portion 136Y is equal to the diameter of the second bearing connecting portion 136Z. The diameter of the first bearing connecting portion 136Y may be larger or smaller than the diameter of the second bearing connecting portion 136Z. In the radial direction of the tooth portion 136A, the first bearing connecting portion 136Y is disposed inside the tooth portion 136A. Preferably, the shaft portion 136B has a second connecting portion 142 connected to the first connecting portion 140 at the outer circumferential portion 136C. In the axial direction of the shaft portion 136B, the second connecting portion 142 is adjacent to the first bearing connecting portion 136Y.

[0167] The first connecting portion 140 includes a female thread portion 144. The second connecting portion 142 includes a male thread portion 146. The first connecting portion 140 includes a first portion 148 having an inner diameter larger than that of the female thread portion 144 and having no threads formed therein. In the axial direction of the shaft portion 136B, the female thread portion 144 is adjacent to the first portion 148. In the axial direction of the shaft portion 136B, the female thread portion 144 is disposed at a position farther from the first bearing connecting portion 136Y than the first portion 148. The second connecting portion 142 includes a second portion 150 having an outer diameter larger than that of the male thread portion 146, having no threads formed therein, and being adjacent to and facing the first portion 148 or being in contact with the first portion 148 in the radial direction of the second gear 136. In the axial direction of the shaft portion 136B, the male thread portion 146 is adjacent to the second portion 150. In the axial direction of the shaft portion 136B, the male thread portion 146 is disposed at a position farther from the first bearing connecting portion 136Y than the second portion 150. In the axial direction of the shaft portion 136B, the width W4 of the female thread portion 144 is equal to or greater than 10% and equal to or less than 100%, and preferably equal to or greater than 30% and equal to or less than 70% of the width W1. In the axial direction of the shaft portion 136B, the width W6 of the male thread portion 146 is equal to or greater than 10% and equal to or less than 100%, and preferably equal to or greater than 30% and equal to or less than 70% of the width of the second connecting portion 142. The first portion 148 and the second portion 150 may be omitted.

[0168] Preferably, at least a portion of the first portion 148 contacts at least a portion of the second portion 150 in the radial direction of the second gear 136. This makes it possible to suppress inclination of the axis of the second gear 136 with respect to the axis of the shaft portion 136B when the tooth portion 136A is connected to the shaft portion 136B. Preferably, when the motor 46 applies a propulsive force to the human-powered vehicle 10, the motor 46 is configured to rotate the second gear 136 in a direction in which the first connecting portion 140 is screwed into the second connecting portion 142.

[0169] The component 40 further includes a washer 152. The washer 152 is provided between at least one of the shaft portion 136B and the tooth portion 136A and the third gear 138 in the axial direction B of the shaft portion 136B. The washer 152 has an engagement portion 154 that engages with the tooth portion 136A and at least one of the shaft portion 136B and the third gear 138. In this embodiment, the washer 152 is provided between the tooth portion 136A and the third gear 138 in the axial direction B of the shaft portion 136B. The washer 152 is preferably formed of a metal material. The washer 152 may be formed of a resin material. The washer 152 includes an annular portion 152A and an engagement portion 154 provided on an inner periphery of the annular portion 152A. The engagement portion 154 includes at least one protrusion 152B protruding inward from the inner periphery of the annular portion 152A. The annular portion 152A and the at least one protrusion 152B are integrally formed as a single member. The washer 152 is provided on the outer periphery of the shaft portion 136B. When the first connecting portion 140 is screwed into the second connecting portion 142, the washer 152 is sandwiched between the toothed portion 136A and the third gear 138. The minimum radius of the third gear 138 is larger than the maximum radius of the second portion 150. The at least one protrusion 152B is provided between the inner periphery 137B of the toothed portion 136A and the third gear 138, and contacts the toothed portion 136A and the third gear 138. Preferably, at least a portion of the annular portion 152A is sandwiched between the toothed portion 136A and the third gear 138, and contacts the toothed portion 136A and the third gear 138. The washer 152 is harder than the toothed portion 136A. The washer 152 is harder than the third gear 138. In the radial direction of the toothed portion 136A, at least a portion of the washer 152 is disposed inside the outer periphery 137A of the toothed portion 136A. The outer diameter of the washer 152 is smaller than the inner diameter of the outer periphery 137A of the toothed portion 136A. In this embodiment, the outer diameter of the washer 152 is larger than the maximum radius of the third gear 138.

[0170] Preferably, the at least one protruding portion 152B includes a plurality of protruding portions 152B. Each of the plurality of protruding portions 152B is formed in a plate shape. Each of the protruding portions 152B extends in the radial direction of the washer 152, and is formed so as to be twisted from the base end portion to the free end portion with respect to an axis passing through the center of each of the protruding portions 152B. In a state where the washer 152 is removed, or in a state before the washer 152 is attached, preferably, at least a part of each of the plurality of protruding portions 152B protrudes toward one side B1 of the axial direction B of the shaft portion 136B from a surface of one side B1 of the axial direction B of the shaft portion 136B of the annular portion 152A. Preferably, at least a part of each of the plurality of protruding portions 152B protrudes toward the other side B2 of the axial direction B of the shaft portion 136B from a surface of the other side B2 of the axial direction B of the shaft portion 136B of the annular portion 152A. Of the multiple protrusions 152B, a portion 153A protruding in one side B1 of the axial direction B of the shaft portion 136B contacts the tooth portion 136A. Of the multiple protrusions 152B, a portion 153B protruding in the other side B2 of the axial direction B of the shaft portion 136B contacts the third gear 138. Preferably, of the multiple protrusions 152B, a portion 153A protruding in one side B1 of the axial direction B of the shaft portion 136B engages with the tooth portion 136A. Preferably, of the multiple protrusions 152B, a portion 153A protruding in one side B1 of the axial direction B of the shaft portion 136B engages with the third gear 138. Preferably, the multiple protrusions 152B are arranged at equal intervals around the axis of the shaft portion 136B and are arranged so as to be rotationally symmetrical around the axis of the shaft portion 136B.

[0171] <Fifth embodiment> A component 40 of the fifth embodiment will be described with reference to Figures 29 and 30. The component 40 of the fifth embodiment is similar to the component 40 of the fourth embodiment except for a different mounting structure of the tooth portion 236A of the second gear 136 to the shaft portion 236B. Therefore, the same reference numerals as in the first and fourth embodiments are used for configurations common to the first and fourth embodiments, and duplicated descriptions will be omitted.

[0172] The tooth portion 236A of the component 40 of this embodiment and the tooth portion 136A of the fourth embodiment are different only in the structure of the inner peripheral portion 237B, and the outer peripheral portion 137A and the intermediate portion 137C have substantially the same structure. The tooth portion 236A includes a first connecting portion 158 instead of the first connecting portion 140 of the fourth embodiment. The first connecting portion 158 includes a connecting member 156. The tooth portion 236A of this embodiment has a first connecting portion 158 formed in an annular shape on the inner peripheral portion 237B, which is connected to the shaft portion 236B via the connecting member 156. In this embodiment, the tooth portion 136A is formed by a plurality of members. The tooth portion 136A includes the first connecting portion 158 and a tooth portion main body 159 provided on the outer peripheral portion of the first connecting portion 158. The outer periphery 137A and the intermediate portion 137C of the tooth portion 236A are formed of the same material as the tooth portion 136A of the fourth embodiment. The shaft portion 136B includes a second connecting portion 160 instead of the second connecting portion 142 of the fourth embodiment. The shaft portion 236B has the second connecting portion 160 connected to the first connecting portion 158 via the connecting member 156 on the outer periphery.

[0173] The connecting member 156 is formed of a metal material. The connecting member 156 includes a cylindrical portion 156A and a flange portion 156B. In the axial direction of the shaft portion 236B, the flange portion 156B is provided on an end portion 156C of the cylindrical portion 156A adjacent to the third gear 138. The flange portion 156B extends radially outward from the outer periphery of the end portion 156C. The flange portion 156B has an annular shape. The tooth portion main body 159 is fixed to the connecting member 156 by insert molding.

[0174] The connecting member 156 includes a sixth restricting portion 156D that restricts the relative movement of the teeth body 159 with respect to the connecting member 156. The sixth restricting portion 156D is configured to restrict the relative movement of the teeth body 159 with respect to the connecting member 156 in the axial direction of the shaft portion 236B, and to restrict the relative rotation of the teeth body 159 with respect to the connecting member 156 around the axis of the shaft portion 236B. The sixth restricting portion 156D includes at least one of a recess 156E and a protrusion 156F. The outer periphery of the cylindrical portion 156A is provided with a recess 156E adjacent to the flange portion 156B. In this embodiment, the recess 156E is continuous around the entire circumference of the outer periphery of the cylindrical portion 156A around the axis of the shaft portion 236B. The recess 156E may be discontinuously formed on the outer periphery of the cylindrical portion 156A around the axis of the shaft portion 236B. A convex portion 156F is formed adjacent to the concave portion 156E in the cylindrical portion 156A. The convex portion 156F protrudes radially outward of the second gear 136 with respect to the cylindrical surface around the axis of the shaft portion 236B. The convex portion 156F includes at least one convex portion 156F, and includes a plurality of convex portions 156F in this embodiment. The plurality of convex portions 156F are formed by forming a polygonal cylindrical shape together with the outer circumferential surface 156G of the cylindrical portion 156A. For example, the outer circumferential surface 156G is formed so that the outer shape of at least a part of the outer circumferential surface 156G of the cylindrical portion 156A in a plane perpendicular to the axial direction of the shaft portion 236B is a regular polygon. In this embodiment, the outer shape of at least a part of the outer circumferential surface 156G of the cylindrical portion 156A in a plane perpendicular to the axial direction of the shaft portion 236B is a regular dodecagon. Preferably, the shape of the first connecting portion 158 is rotationally symmetrical with respect to the axis X of the shaft portion 236B. The recess 156E is in contact with the inner periphery 159A of the teeth main body 159. The protrusion 156F is in contact with the inner periphery 159A of the teeth main body 159. The inner periphery 159A of the teeth main body 159 is in contact with the outer periphery 156X of the flange portion 156B and the side surface of the flange portion 156B on the first bearing connecting portion 136Y side.

[0175] The inner circumferential portion 156Y of the connecting member 156 has a seventh restricting portion 156Z that restricts the relative rotation between the first connecting portion 158 and the second connecting portion 160 around the axis line X of the shaft portion 236B. The seventh restricting portion 156Z includes at least one of a recess and a protrusion. The inner circumferential portion 156Y of the connecting member 156 includes a first portion 156V that faces the outer circumferential portion of the second connecting portion 160 in the radial direction of the second gear 136 or that contacts the outer circumferential portion of the second connecting portion 160. The minimum inner diameter of the first portion 156V is larger than the maximum inner diameter of the seventh restricting portion 156Z. The inner circumferential surface 156W of the first portion 156V includes, for example, a cylindrical surface. The inner circumferential surface 156U of the seventh restricting portion 156Z is formed, for example, in a polygonal tube shape. The seventh restricting portion 156Z is disposed at a position farther from the first bearing connecting portion 136Y than the first portion 156V. The inner periphery of the cylindrical portion 156A is coupled to the second connecting portion 160. For example, the second connecting portion 160 is press-fitted into the inner periphery of the cylindrical portion 156A. The outer periphery 160B of the second connecting portion 160 includes an eighth restricting portion 160A that contacts the seventh restricting portion 156Z. The eighth restricting portion 160A is formed on the outer periphery 160B of the second connecting portion 160. The eighth restricting portion 160A has a shape complementary to the seventh restricting portion 156Z.

[0176] The flange portion 156B contacts the third gear 138 in the axial direction B of the shaft portion 136B. After the toothed portion body 159 is fixed to the first connecting portion 158 by insert molding, the shaft portion 236B is press-fitted into the toothed portion 236A, so that an appropriate material can be used for the shaft portion 236B and the toothed portion body 159.

[0177] <Modification> The description of the embodiments is merely an example of possible forms of components for a human-powered vehicle according to the present disclosure, and is not intended to limit the forms. Components for a human-powered vehicle according to the present disclosure may take the forms of, for example, modified versions of the embodiments shown below, or a combination of at least two mutually non-conflicting modified versions. In the following modified versions, parts common to the embodiments are given the same reference numerals as in the embodiments, and descriptions thereof are omitted.

[0178] In the first embodiment, the second embodiment, the third embodiment, the modified example of the first embodiment, the modified example of the second embodiment, and the modified example of the third embodiment, the configuration of the reducer 40B may be modified as in the fourth embodiment.

[0179] In the first embodiment, the second embodiment, the third embodiment, the modified example of the first embodiment, the modified example of the second embodiment, and the modified example of the third embodiment, the configuration of the reducer 40B may be modified as in the fifth embodiment.

[0180] In the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the modified example of the first embodiment, the modified example of the second embodiment, the modified example of the third embodiment, and the modified example of the fourth embodiment, at least one of the first rotating body 112, the second rotating body 116, the third rotating body 122, the fourth rotating body 126, and the sixth rotating body 132 may have a structure similar to that of the second gear 136 of the fourth embodiment, instead of or in addition to the fifth rotating body 130. In short, any of the gears included in the reducer 40B may be configured to include a thermosetting resin.

[0181] In the first embodiment, the second embodiment, the third embodiment, the fifth embodiment, the modified example of the first embodiment, the modified example of the second embodiment, the modified example of the third embodiment, and the modified example of the fifth embodiment, at least one of the first rotating body 112, the second rotating body 116, the third rotating body 122, the fourth rotating body 126, and the sixth rotating body 132 may have a structure similar to that of the second gear 136 of the fifth embodiment, instead of or in addition to the fifth rotating body 130. In short, any of the gears included in the reducer 40B may be configured to include a thermosetting resin.

[0182] In the first embodiment and the modified example of the first embodiment, the first female thread portion 62B of the base portion 62 and the male thread portion 66A of the intermediate portion 66 may be omitted, and the intermediate portion 67 may be press-fitted into the hole 62A of the base portion 62 as shown in FIG. 31. As shown in FIG. 31, the connecting portion 79 may be press-fitted into the hole 62A of the base portion 62. In this case, at least one of the intermediate portion 67 and the base portion 62 may include a restricting portion that restricts the relative rotation of the connecting portion 79 and the intermediate portion 90 with the base portion 62. The restricting portion is provided on at least one of the outer periphery of the intermediate portion 67 and the inner periphery of the base portion 62. In this case, the first female thread portion 62B of the base portion 62 and the male thread portion 66A of the intermediate portion 66 are omitted.

[0183] In the first embodiment, the second embodiment, the fourth embodiment, the modified example of the first embodiment, the modified example of the second embodiment, and the modified example of the fourth embodiment, the intermediate portion 66, 82, 90 may contain rubber or resin, similar to the intermediate portion 98, 101 of the third embodiment. The intermediate portion 66, 82, 90 is formed of a fourth material. FIG. 32 shows an intermediate portion 94 formed of rubber or resin. The intermediate portion 94 may be formed separately from the connecting portion 64, 80, 88 and bonded to the connecting portion 64, 80, 88, may be insert-molded with the connecting portion 64, 80, 88, or may be applied to the connecting portion 64. The flange portions 64B, 80B of the connecting portion 64, 80 may be formed of rubber or resin. The thickness of the intermediate portion 94 is 1 micrometer or more and 5 millimeters or less. When the flange portions 64B, 80B of the connecting portions 64, 80 are made of rubber or resin, the flange portions 64B, 80B may be formed separately from the second female thread portions 64A, 80A of the connecting portions 64, 80, and may be formed integrally with the intermediate portion 94. A male thread portion may be formed on the outer periphery of the intermediate portion 94 as in the first embodiment. At least one of at least one recess and at least one protrusion may be formed on the outer periphery of the intermediate portion 94 as in the second embodiment. The outer periphery of the intermediate portion 94 may be formed to include a cylindrical surface, and the mounting portion and the intermediate portion may be press-fitted into the hole 62A.

[0184] In the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the modified example of the first embodiment, the modified example of the second embodiment, the modified example of the third embodiment, the modified example of the fourth embodiment, and the modified example of the fifth embodiment, the at least one first mounting portion 44A and the at least one second mounting portion 44B may be arranged without any space therebetween in a direction parallel to the rotation axis C2 of the input rotation shaft 12A. In this case, the at least one first mounting portion 44A and the at least one second mounting portion 44B may be integrally formed, and the hole 62A of the first mounting portion 44A and the hole 62A of the second mounting portion 44B may be in communication with each other.

[0185] In the first embodiment, the second embodiment, the fourth embodiment, the modified example of the first embodiment, the modified example of the second embodiment, and the modified example of the fourth embodiment, as long as the intermediate portion 66, 82, 90 is formed from the third material or the fourth material, the combination of materials for the base portion 62, the connecting portions 64, 80, 88, and the intermediate portions 66, 82, 90 can be changed as appropriate. In short, when a fastener 36 made of a material that is susceptible to galvanic corrosion with respect to the first material of the base portion 62 is selected, any combination can be used as long as it can suppress galvanic corrosion.

[0186] In the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the modified example of the first embodiment, the modified example of the second embodiment, the modified example of the third embodiment, the modified example of the fourth embodiment, and the modified example of the fifth embodiment, the component 40 may further include a transmission configured to change the rotation speed of the output unit 40A relative to the rotation speed of the input rotating shaft 12A. The component 40 in the first embodiment, the second embodiment, the third embodiment, the modified example of the first embodiment, the modified example of the second embodiment, and the modified example of the third embodiment may include a transmission configured to change the rotation speed of the output unit 40A relative to the rotation speed of the input rotating shaft 12A, omitting the motor 46 and the reducer 40B. The transmission is provided in a power transmission path between the input rotating shaft 12A and the output unit 40A. The transmission is accommodated in a housing 42. The transmission may include a stepped transmission, or may include a CVT (Continuously Variable Transmission). The transmission may include, for example, a planetary gear mechanism, and may include a number of sprockets, a chain, and a derailleur.

[0187] In the third embodiment and the modified example of the third embodiment, as shown in FIG. 33, the first base portion 63A and the second base portion 63B may be integrally formed as a single member. In the third embodiment and the modified example of the third embodiment, the connection structure between the intermediate portion 98 and the base portion 62 and the connection structure between the intermediate portion 98 and the connecting portion 97 can be appropriately modified as long as the connection strength between the intermediate portion 98 and the base portion 62 is greater than the connection strength between the intermediate portion 98 and the connecting portion 97. For example, the intermediate portion 98 may be connected to the base portion 62 by a snap fit or a screw.

[0188] In the third embodiment and the modified example of the third embodiment, the bonding strength between the intermediate portion 98 and the base portion 62 may be equal to or less than the bonding strength between the intermediate portion 98 and the connecting portion 97 . In the third embodiment and the modified example of the third embodiment, the connection structure between the intermediate portion 101 and the base portion 62 and the connection structure between the intermediate portion 101 and the connecting portion 100 can be appropriately changed as long as the connection strength between the intermediate portion 101 and the base portion 62 is greater than the connection strength between the intermediate portion 101 and the connecting portion 100. For example, the intermediate portion 101 may be connected to the base portion 62 by a snap fit or a screw.

[0189] In the third embodiment and the modified example of the third embodiment, the bonding strength between the intermediate portion 101 and the base portion 62 may be greater than the bonding strength between the intermediate portion 101 and the connecting portion 100. In this case, for example, the recess 100T on the outer periphery of the connecting portion 100 and the protrusion 101T on the inner periphery of the intermediate portion 101 are omitted.

[0190] In the fourth embodiment, the fifth embodiment, the modified example of the fourth embodiment, and the modified example of the fifth embodiment, the gear 110 may be used for a gear other than the reducer 40B. In short, the gear can be applied to any device as long as it is configured to include a shaft portion formed of metal, a tooth portion including a thermosetting resin and provided on the outer periphery of the shaft portion so as to rotate integrally with the shaft portion, the tooth portion being formed in an annular shape and having a first connecting portion on an inner periphery that is connected to the shaft portion, the shaft portion having a second connecting portion on an outer periphery that is connected to the first connecting portion, the first connecting portion including a female thread portion, and the second connecting portion including a male thread portion.

[0191] In the fourth embodiment, the fifth embodiment, the modified example of the fourth embodiment, and the modified example of the fifth embodiment, the structure of the mounting portion 44 of the component 40 can be changed as appropriate as long as the component 40 can be mounted to the frame 18.

[0192] In each of the embodiments and the modified examples of each of the embodiments, the component 40 does not have to include the input rotating shaft 12 A. For example, the input rotating shaft 12 A may be configured to be detachable from the component 40.

[0193] In each of the embodiments and the modified examples of each of the embodiments, the reducer 40B may have any configuration as long as at least one gear 110 includes a thermosetting resin. For example, the reducer 40B may be a two-speed transmission including four gears 110, or a one-speed transmission including two gears 110.

[0194] In the third embodiment and the modified example of the third embodiment, the second mounting portion 96B may have the same configuration as the first mounting portion 96A, and the first mounting portion 96A may have the same configuration as the second mounting portion 96B. In the third embodiment and the modified example of the third embodiment, the first mounting portion 96A may have the configuration shown in Fig. 16, and the second mounting portion 96B may have the configuration shown in Fig. 33. In the third embodiment and the modified example of the third embodiment, the first mounting portion 96A may have the configuration shown in Fig. 33, and the second mounting portion 96B may have the configuration shown in Fig. 16.

[0195] The term "at least one" as used herein means "one or more" of the desired options. As an example, the term "at least one" as used herein means "only one option" or "both of two options" if the number of options is two. As another example, the term "at least one" as used herein means "only one option" or "any combination of two or more options" if the number of options is three or more. [Explanation of symbols]

[0196] 10...human-powered vehicle, 36...fastener, 36A...male thread portion, 38...support portion, 40...component, 42...housing, 52...first housing portion, 54...second housing portion, 44...mounting portion, 46...motor, 62...base portion, 62A...hole, 62B...first female thread portion, 64,79,80,88...connection portion, 64A,80A,88A...second female thread portion, 64B,80B...flange portion, 64C...tool engagement portion, 66,67,82,90,94...middle portion, 66A...male thread portion, 48...positioning portion, 48A...first convex portion, 48B...first concave portion, 50...insulating portion, 70...conductive portion, 71...conductive grease, 72...cover, 74...electrical connector, 74A...connection terminal, 76...rib, 76A...first rib, 76B...second rib, 97...connecting portion, 97A...second female thread portion, 97B...flange portion, 98A...knurling, 98B...first contact portion, 98C...second contact portion, 99...adhesive, 100...connecting portion, 100A...second female thread portion, 100B...flange portion, 100C...knurling, 101...middle portion, 101A...protruding portion, 1 01B...first contact portion, 101C...second contact portion, 110...gear, 110A...tooth portion, 134...first gear, 136...second gear, 136A, 236A...tooth portion, 136B, 236B...shaft portion, 138...third gear, 140, 158...first connecting portion, 142, 160...second connecting portion, 144...female thread portion, 146...male thread portion, 152...washer.

Claims

1. A component for a human-powered vehicle, comprising: Housing and a mounting portion provided on the housing and configured to be attached to a support portion of the human-powered vehicle by a fastener; The mounting portion is A metal base and a metal connection portion provided on the base portion and configured to connect to the fastener; an intermediate portion provided between the connecting portion and the base portion, the base portion includes a first material having a first standard electrode potential; the connecting portion includes a second material having a second standard electrode potential; the intermediate portion is formed of a fourth material having electrical insulation properties; the first standard electrode potential is different from the second standard electrode potential; the fourth material includes a metal oxide; the second material comprises an aluminum alloy; the metal oxide comprises aluminum oxide; the coupling portion includes a second female threaded portion configured to couple to the fastener; The intermediate portion is provided radially outwardly of the second female threaded portion so as to overlap the second female threaded portion.

2. A component for a human-powered vehicle, comprising: Housing and a mounting portion provided on the housing and configured to be attached to a support portion of the human-powered vehicle by a fastener; The mounting portion is A metal base and a metal connection portion provided on the base portion and configured to connect to the fastener; an intermediate portion provided between the connecting portion and the base portion, the base portion includes a first material having a first standard electrode potential; the connecting portion includes a second material having a second standard electrode potential; the intermediate portion is formed of a fourth material having electrical insulation properties; the first standard electrode potential is different from the second standard electrode potential; The base portion has a hole. At least a portion of the connecting portion and at least a portion of the intermediate portion are disposed in the hole; the coupling portion has a flange portion that is disposed between the base portion and the support portion when the mounting portion is attached to the support portion of the human-powered vehicle by the fastener, and has an outer diameter larger than a diameter of the hole; the coupling portion includes a second female threaded portion configured to couple to the fastener; The intermediate portion is provided radially outwardly of the second female threaded portion so as to overlap the second female threaded portion.

3. A component for a human-powered vehicle, comprising: Housing and a mounting portion provided on the housing and configured to be attached to a support portion of the human-powered vehicle by a fastener; The mounting portion is A metal base and a metal connection portion provided on the base portion and configured to connect to the fastener; an intermediate portion provided between the connecting portion and the base portion, the base portion includes a first material having a first standard electrode potential; the connecting portion includes a second material having a second standard electrode potential; the intermediate portion is formed of a fourth material having electrical insulation properties; the first standard electrode potential is different from the second standard electrode potential; The base portion has a hole. At least a portion of the connecting portion and at least a portion of the intermediate portion are disposed in the hole; the coupling portion includes a second female threaded portion configured to couple to the fastener; The intermediate portion is provided radially outwardly of the second female threaded portion so as to overlap the second female threaded portion.

4. The component according to claim 2 or 3, wherein the intermediate portion is formed by a member separate from the connecting portion.

5. The intermediate portion is detachably provided to the connecting portion, The component of claim 4 , wherein a bonding force between the intermediate portion and the base portion is greater than a bonding force between the intermediate portion and the connecting portion.

6. A component for a human-powered vehicle, comprising: Housing and a mounting portion provided on the housing and configured to be attached to a support portion of the human-powered vehicle by a fastener; The mounting portion is A metal base and a metal connection portion provided on the base portion and configured to connect to the fastener; an intermediate portion provided between the connecting portion and the base portion, the base portion includes a first material having a first standard electrode potential; the connecting portion includes a second material having a second standard electrode potential; The intermediate portion is A third material having a third standard electrode potential, the difference between the third standard electrode potential and the first standard electrode potential and the difference between the third standard electrode potential and the second standard electrode potential being smaller than the difference between the first standard electrode potential and the second standard electrode potential, respectively; or the insulating layer is formed of a fourth material; the first standard electrode potential is different from the second standard electrode potential; The base portion has a hole. At least a portion of the connecting portion and at least a portion of the intermediate portion are disposed in the hole; the coupling portion has a flange portion that is disposed between the base portion and the support portion when the mounting portion is attached to the support portion of the human-powered vehicle by the fastener, and has an outer diameter larger than a diameter of the hole; The intermediate portion is formed of a separate member from the connecting portion, The intermediate portion is detachably provided to the connecting portion, A component, wherein a bonding force between the intermediate portion and the base portion is greater than a bonding force between the intermediate portion and the connecting portion.

7. A component for a human-powered vehicle, comprising: Housing and a mounting portion provided on the housing and configured to be attached to a support portion of the human-powered vehicle by a fastener; The mounting portion is A metal base and a metal connection portion provided on the base portion and configured to connect to the fastener; an intermediate portion provided between the connecting portion and the base portion, the base portion includes a first material having a first standard electrode potential; the connecting portion includes a second material having a second standard electrode potential; The intermediate portion is A third material having a third standard electrode potential, the difference between the third standard electrode potential and the first standard electrode potential and the difference between the third standard electrode potential and the second standard electrode potential being smaller than the difference between the first standard electrode potential and the second standard electrode potential, respectively; or the insulating layer is formed of a fourth material; the first standard electrode potential is different from the second standard electrode potential; The base portion has a hole. At least a portion of the connecting portion and at least a portion of the intermediate portion are disposed in the hole; the coupling portion includes a second female threaded portion configured to couple to the fastener; The intermediate portion is formed of a separate member from the connecting portion, The intermediate portion is detachably provided to the connecting portion, A component, wherein a bonding force between the intermediate portion and the base portion is greater than a bonding force between the intermediate portion and the connecting portion.

8. The component of claim 2 or 3, wherein the fourth material comprises a metal oxide.

9. the second material comprises an aluminum alloy; The component of claim 8 , wherein the metal oxide comprises aluminum oxide.

10. The component according to claim 8 or 9, wherein the thickness of the intermediate portion is equal to or greater than 1 micrometer and equal to or less than 30 micrometers.

11. The component according to claim 2 or 3, wherein the intermediate portion comprises rubber or resin.

12. The component according to claim 1 , wherein the intermediate portion is non-detachably attached to the connecting portion.

13. The base portion has a hole. The component of claim 1 , wherein at least a portion of the connecting portion and at least a portion of the intermediate portion are disposed in the hole.

14. The component according to any one of claims 3, 7, and 13, wherein the connecting portion has a flange portion that is disposed between the base portion and the support portion when the mounting portion is attached to the support portion of the human-powered vehicle by the fastener, and has an outer diameter larger than a diameter of the hole.

15. The component of claim 6 , wherein the connection portion includes a second female threaded portion configured to connect to the fastener.

16. the base portion includes a first female thread portion that forms the hole, 16. The component of claim 2, wherein the intermediate portion includes at least a portion of a male threaded portion configured to mate with the first female threaded portion.

17. the base portion includes a first female thread portion that forms the hole, the intermediate portion includes at least a portion of a male threaded portion configured to mate with the first female threaded portion; One of the first female thread portion and the second female thread portion is a right-handed thread, 16. The component of claim 2, 3, and 13-15, wherein the other of the first female threaded portion and the second female threaded portion is a left-handed thread.

18. The component of claim 2 , wherein the coupling portion includes a tool engagement portion configured to engage a tool.

19. 18. The component of claim 2, wherein the intermediate portion is press fit into the hole.

20. At least a portion of the connecting portion is formed in a cylindrical shape, The component of claim 2 , wherein the at least a portion of the intermediate portion covers at least a portion of an outer circumferential surface of the at least a portion of the connecting portion.

21. The component of claim 20 , wherein an outer periphery of at least a portion of the connecting portion is formed with a knurl that contacts the intermediate portion.

22. At least a portion of the intermediate portion is formed in a cylindrical shape, 22. The component according to claim 20 or 21, wherein an outer periphery of at least the portion of the intermediate portion is formed with at least one of a knurl that contacts the base portion and a protrusion that contacts the base portion.

23. The component of claim 22 , wherein the at least one of the knurl contacting the base and the protrusion contacting the base is located away from an opening of the hole.

24. the at least one of the knurl and the protrusion has a first contact portion and a second contact portion; The component according to claim 22 or 23, wherein the first contact portion and the second contact portion are spaced apart in an extension direction of the hole.

25. 25. The component of claim 2, wherein the intermediate portion is adhered to the base portion by an adhesive provided in the hole.

26. the intermediate portion is bonded to the base portion by an adhesive provided in the hole; The component of claim 24 , wherein at least a portion of the adhesive is provided between the first contact portion and the second contact portion.

27. The component of claim 1 , wherein the connecting portion and the intermediate portion are non-detachably attached to the base portion.

28. 28. The component of claim 1 , wherein at least a portion of the housing is integrally formed with the base as a unitary member.

29. The base portion is A first base portion; a second base portion disposed on the first base portion and defining the aperture; The component of claim 2 , wherein the second base portion comprises a different material than the first base portion.

30. 30. The component of claim 29, wherein at least a portion of the housing is integrally formed with the first base portion as a unitary member.

31. The component of claim 1 , wherein the base portion comprises a magnesium alloy.

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