Hub assembly for a human-powered vehicle

Abstract

A hub assembly for a human-powered vehicle is provided. The hub assembly is provided substantially with a hub axle, a hub body, electrical components, and a user input device. The hub body is rotatably mounted on the hub axle so as to rotate about a center axis of rotation of the hub assembly. The user input device is electrically coupled to the electrical components.

Description

TECHNICAL FIELD

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

[0002] Some wheels for human-powered vehicles, e.g. bicycles, have a hub, a plurality of spokes and a ring-shaped rim. The hub has a hub axle which is non-rotatably mounted to a frame of the human-powered vehicle. The hub has a hub body which is coaxially coupled to the hub axle such that the hub body is disposed radially outwardly relative to the hub axle. Bearings are constructed and arranged to support the hub body such that the hub body is freely rotatable about the hub axle. In almost all types of bicycles, except for fixed-gear and track racing bicycles, a bicycle freewheel is provided on the hub of the wheel of the bicycle, typically the rear wheel. The bicycle freewheel typically has a one-way clutch function whereby it only transmits torque in one direction. Thus, using the freewheel enables the bicycle to coast freely without any rotation of the pedals (i.e. during freewheeling). During freewheeling, the bicycle freewheel is considered to be in a freewheeling state in which the bicycle wheel can freely rotate while the sprocket remains stationary. SUMMARY

[0003] Generally, the present disclosure relates to various features of a hub assembly for a human-powered vehicle. The term “human-powered vehicle” as used herein refers to a vehicle which is capable of being driven at least by human-powered driving force, but does not include vehicles which use driving force other than human power only. In particular, vehicles which use an internal combustion engine only as driving force are not included in the human-powered vehicles. It is generally assumed that the human-powered vehicles are compact, light vehicles, sometimes not requiring a license for driving on public roads. The number of wheels on the human-powered vehicles is not limited. The human-powered vehicles include, for example, unicycles and vehicles having three or more wheels. The human-powered vehicles include, for example, various types of bicycles, such as mountain bikes, road bikes, city bikes, cargo bikes and recumbent bikes, as well as electrically assisted bicycles (E-bikes).

[0004] In view of the state of the art and in accordance with a first aspect of the present disclosure, a hub assembly for a human-powered vehicle is provided. The hub assembly essentially comprises a hub axle, a hub body, an electrical component and a user input device. The hub body is rotatably mounted on the hub axle so as to rotate about a center axis of rotation of the hub assembly. The user input device is electrically coupled to the electrical component.

[0005] With the hub assembly according to the first aspect, a user is able to easily input a signal to the electrical component via the user input device.

[0006] According to a second aspect of the present disclosure, the hub assembly according to the first aspect is configured such that the electrical component includes a circuit board, and the user input device is electrically connected to the circuit board.

[0007] With the hub assembly according to the second aspect, various electrical parts of the electrical component can be interconnected using the circuit board.

[0008] According to a third aspect of the present disclosure, the hub assembly according to the first aspect or the second aspect is configured such that the electrical component is non-rotatably disposed with respect to the rotational center axis.

[0009] With the hub assembly according to the third aspect, the electrical component can be more reliably protected by preventing rotational movement with respect to the rotational center axis.

[0010] According to a fourth aspect of the present disclosure, the hub assembly according to any one of the first aspect to the third aspect is configured such that the electrical component is disposed in the hub body.

[0011] With the hub assembly according to the fourth aspect, parts of the electrical component can be more reliably protected by arranging the electrical component in the hub body.

[0012] According to a fifth aspect of the present disclosure, the hub assembly according to any one of the first aspect to the fourth aspect is configured such that the user input device is spaced apart in an axial direction with respect to the electrical component.

[0013] With the hub assembly according to the fifth aspect, the user input device can be remotely positioned from the electrical component in a more convenient position to operate the user input device.

[0014] According to a sixth aspect of the present disclosure, the hub assembly according to any one of the first aspect to the fifth aspect is configured such that the user input device does not include a wireless communication receiver.

[0015] With the hub assembly according to the sixth aspect, by not providing the wireless communication receiver to the user input device, manufacturing costs of the hub assembly can be reduced.

[0016] According to a seventh aspect of the present disclosure, the hub assembly according to any one of the first aspect to the sixth aspect is configured such that the hub shaft includes a cable receiving passage extending axially between the electrical component and the user input device.

[0017] With the hub assembly according to the seventh aspect, by disposing the cable in the axially extending cable receiving passage of the hub shaft, the electrical component can be easily connected to the user input device without interfering with the rotational part.

[0018] According to an eighth aspect of the present disclosure, the hub assembly according to any one of the first aspect to the seventh aspect further includes a first bearing rotatably supporting the first end portion of the hub body on the hub shaft and a second bearing rotatably supporting the second end portion of the hub body on the hub shaft. The electrical component is disposed between the first bearing and the second bearing. The user input device is disposed between the first bearing and the axial end portion of the hub shaft.

[0019] With the hub assembly according to the eighth aspect, the hub body is able to rotate on the hub shaft while the electrical component and the user input device are disposed in a position such that the electrical component and the user input device do not rotate together with the hub body. The user input device can also send a signal to the electrical component on the opposite side of the first bearing in the axial direction.

[0020] According to a ninth aspect of the present disclosure, the hub assembly according to any one of the first aspect to the eighth aspect is configured such that the user input device is disposed outside the hub body.

[0021] With the hub assembly according to the ninth aspect, the user is able to easily operate the user input device without disassembling the hub assembly.

[0022] According to a tenth aspect of the present disclosure, the hub assembly according to any one of the first aspect to the eighth aspect is configured such that the user input device is disposed inside the hub body.

[0023] With the hub assembly according to the tenth aspect, the user input device can be reliably protected.

[0024] According to an eleventh aspect of the present disclosure, the hub assembly according to any one of the first aspect to the ninth aspect further includes a sprocket support body rotatably disposed about a rotation center axis to transmit a driving force to the hub body while rotating in a driving rotation direction about the rotation center axis.

[0025] With the hub assembly according to the eleventh aspect, the sprocket support body functions as a freewheel to allow the sprocket support body to stop rotating during coasting.

[0026] According to a twelfth aspect of the present disclosure, the hub assembly according to the eleventh aspect is configured such that the user input device is disposed inside the sprocket support body.

[0027] With the hub assembly according to the twelfth aspect, the user input device can be reliably protected.

[0028] According to a thirteenth aspect of the present disclosure, the hub assembly according to any one of the first aspect to the twelfth aspect further includes an end cover disposed on the axial end portion of the hub shaft. The user input device is operatively accessible through an opening in the end cover.

[0029] With the hub assembly according to the thirteenth aspect, the user input device can be reliably protected while still being accessible without disassembling the hub assembly.

[0030] According to a fourteenth aspect of the present disclosure, the hub assembly according to the thirteenth aspect is configured such that the end cover includes a rotation restriction portion configured to couple the hub shaft to a vehicle body of the human-powered vehicle such that rotation of the hub shaft relative to the vehicle body is restricted.

[0031] With the hub assembly according to the fourteenth aspect, the hub assembly can be easily installed in a proper orientation.

[0032] According to a fifteenth aspect of the present disclosure, the hub assembly according to any one of the first aspect to the fourteenth aspect further includes a double nut including a first nut having a first tool engagement structure and a second nut having a second tool engagement structure. The first nut and the second nut are threadedly engaged with the external thread of the hub shaft. The first tool engagement structure and the second tool engagement structure face outward in the axial direction. When viewed from the axial direction, the first tool engagement structure is disposed radially outward of the second tool engagement structure with respect to the rotation center axis.

[0033] With the hub assembly according to the fifteenth aspect, the double nut can be tightened even when a component such as the user input device is placed between the axial end portion of the hub shaft and the double nut.

[0034] According to a sixteenth aspect of the present disclosure, the hub assembly according to the fifteenth aspect is configured such that the user input device is located on the axial outer side of the double nut with respect to the rotation center axis and is at least partially aligned with the double nut in the axial direction.

[0035] With the hub assembly according to the sixteenth aspect, the user input device is conveniently positioned for user operation.

[0036] According to a seventeenth aspect of the present disclosure, the hub assembly according to the fifteenth aspect or the sixteenth aspect is configured such that the first tool engagement structure and the second tool engagement structure are accessible in the axial direction with a tool.

[0037] With the hub assembly according to the seventeenth aspect, the first nut and the second nut can be easily tightened in a case where a component such as the user input device is placed between the axial end portion of the hub shaft and the double nut.

[0038] According to an eighteenth aspect of the disclosure, the hub assembly according to any one of the fifteenth aspect to the seventeenth aspect further includes a first bearing and a second bearing. The first bearing rotatably supports the first end portion of the hub body on the hub shaft. The second bearing rotatably supports the second end portion of the hub body on the hub shaft. The first nut includes an inner race that supports a plurality of rolling elements of the first bearing.

[0039] With the hub assembly according to the eighteenth aspect, the hub body is rotatable on the hub shaft, while the number of components can be reduced by having the first nut include the inner race of the first bearing.

[0040] According to a nineteenth aspect of the disclosure, the hub assembly according to any one of the first aspect to the eighteenth aspect further includes a power generator disposed to the hub body and configured to generate electric power by rotation of the hub body.

[0041] With the hub assembly according to the nineteenth aspect, electric power can be generated from the rotation of the hub body.

[0042] According to a twentieth aspect of the disclosure, the hub assembly according to the nineteenth aspect is configured such that the electric component includes at least one capacitor electrically connected to the power generator.

[0043] With the hub assembly according to the twentieth aspect, electric power can be supplied to the electric component when the human-powered vehicle is stopped.

[0044] According to a twenty-first aspect of the disclosure, a hub assembly for a human-powered vehicle is provided. The hub assembly substantially includes a hub shaft, a rotating body, and a double nut. The rotating body is rotatably mounted on the hub shaft to rotate about a rotational center axis of the hub assembly. The double nut includes a first nut having a first tool engagement structure and a second nut having a second tool engagement structure. The first nut and the second nut are in threaded engagement with external threads of the hub shaft. The first tool engagement structure and the second tool engagement structure face outward in an axial direction with respect to the rotational center axis. When viewed from the axial direction, the first tool engagement structure is disposed radially outward of the second tool engagement structure with respect to the rotational center axis.

[0045] With the hub assembly according to the twenty-first aspect, the first nut and the second nut can be easily tightened simultaneously, or independently, where both the first nut and the second nut are in threaded engagement with the external threads of the hub shaft.

[0046] According to a twenty-second aspect of the disclosure, the hub assembly according to the twenty-first aspect further includes an electric component located near an axial end portion of the hub shaft on an axially outer side of the double nut with respect to the rotational center axis.

[0047] With the hub assembly according to the twenty-second aspect, the electric component is conveniently positioned so that the electric component can be accessed without loosening the first nut and / or the second nut.

[0048] According to a twenty-third aspect of the present disclosure, the hub assembly according to the twenty-second aspect further includes a detected component and a rotation detection sensor. The detected component is provided on the rotation body. The rotation detection sensor is configured to detect the detected component. The electric component is provided on the hub shaft and includes the rotation detection sensor.

[0049] With the hub assembly according to the twenty-third aspect, the rotation of the rotation body can be reliably detected.

[0050] According to a twenty-fourth aspect of the present disclosure, the hub assembly according to any one of the twenty-first aspect to the twenty-third aspect further includes a first bearing and a second bearing. The first bearing rotatably supports the first end portion of the rotation body on the hub shaft. The second bearing rotatably supports the second end portion of the rotation body on the hub shaft. The first nut includes an inner race of the first bearing.

[0051] With the hub assembly according to the twenty-fourth aspect, the rotation body can rotate on the hub shaft, while the number of components can be reduced by having the first nut include the inner race of the first bearing.

[0052] According to a twenty-fifth aspect of the present disclosure, the hub assembly according to any one of the twenty-first aspect to the twenty-fourth aspect is configured so that the first nut and the second nut are provided inside the rotation body.

[0053] With the hub assembly according to the twenty-fifth aspect, the hub assembly can be made more compact in the axial direction.

[0054] Furthermore, other objects, features, aspects and advantages of the disclosed hub assembly will become apparent to one skilled in the art from the following detailed description, the accompanying drawings, and the appended claims. BRIEF DESCRIPTION OF DRAWINGS

[0055] Reference will now be made to the drawings, which form a part of this original disclosure:

[0056] Figure 1 is a side elevational view of a human-powered vehicle, i.e., a bicycle, equipped with a hub assembly, i.e., a bicycle hub assembly, according to the first embodiment;

[0057] Figure 2 is Figure 1 is a longitudinal elevational view of the hub assembly shown attached to a vehicle body of a human-powered vehicle;

[0058] Figure 3 is Figure 1a perspective view of the hub assembly shown;

[0059] Figure 4 is along Figures 2-3 an end elevational view of the hub assembly shown;

[0060] Figure 5 is along Figure 4 when viewed along section line 5-5 in Figures 2-4 a longitudinal sectional view of the hub assembly shown;

[0061] Figure 6 is along Figure 5 an enlarged longitudinal sectional view of a portion of the hub assembly shown;

[0062] Figure 7 is along Figures 2-5 a perspective view of the hub assembly shown, wherein selected components have been removed to show a double nut installed to a hub axle of the hub assembly;

[0063] Figure 8 is similar to Figure 7 the hub assembly shown, but wherein the double nut is unscrewed from the hub axle of the hub assembly; Figures 2-5

[0064] Figure 9 is a perspective view of a tool for installing a double nut to Figures 2-5 the hub axle of the hub assembly shown;

[0065] Figure 10 is a side elevational view of the rear derailleur and Figures 2-5 the hub assembly shown, coupled to a vehicle body of a human-powered vehicle, wherein a cover has been provided to the vehicle body to cover a cable line connecting the rear derailleur and the hub assembly;

[0066] Figure 11 is a longitudinal sectional view of the front hub assembly of the human-powered vehicle shown; and Figure 1

[0067] is a longitudinal sectional view of a modified hub assembly for Figure 12 the human-powered vehicle shown. Figure 1 DETAILED DESCRIPTION

[0068] Selected embodiments will now be described with reference to the drawings. From this disclosure, it will be apparent to those skilled in the art of human-powered vehicle fields (e.g., the field of bicycles) that the following description of embodiments is provided merely as an illustration of the disclosure and is not intended to limit the invention as defined by the appended claims and their equivalents.

[0069] Reference will first be made to Figure 1 ​​A hub assembly 10A is provided for a human-powered vehicle V. In other words, a human-powered vehicle V (i.e., a bicycle) equipped with a hub assembly 10A according to the illustrated embodiment is shown. Here, in the illustrated embodiment, the hub assembly 10A is a bicycle hub or bicycle hub assembly. More specifically, the hub assembly 10A is a bicycle rear hub or bicycle rear hub assembly. Moreover, here, in the illustrated embodiment, the hub assembly 10A is a hub dynamo for providing electricity to one or more components of the human-powered vehicle V. However, the hub assembly 10A is not limited to a hub dynamo. In particular, certain aspects of the hub assembly 10A may be provided that do not generate electricity. Moreover, although the hub assembly 10A is shown as a rear hub assembly, certain aspects of the hub assembly 10A may be provided to the hub assembly 10B, which is a front hub assembly. Therefore, the hub assembly 10A is not limited to a rear hub assembly.

[0070] Here, the human-powered vehicle V is an electric-assisted bicycle (E-bike). Alternatively, the human-powered vehicle V can be a road bike, city bike, cargo bike, recumbent bike, or another type of off-road bicycle such as a cyclocross bike. Figure 1 As shown, the human-powered vehicle V includes a vehicle body VB supported by a rear wheel RW and a front wheel FW. The vehicle body VB essentially comprises a front frame body FB and a rear frame body RB (swing arm). A handlebar H and a front fork FF for steering the front wheel FW are also mounted on the vehicle body VB. The rear frame body RB is pivotally mounted to the rear of the front frame body FB, allowing it to pivot relative to the front frame body FB. The rear wheel RW is mounted to the rear end of the rear frame body RB. A rear shock absorber RS ​​is operatively arranged between the front frame body FB and the rear frame body RB. The rear shock absorber RS ​​is positioned between the front frame body FB and the rear frame body RB to control the movement of the rear frame body RB relative to the front frame body FB. That is, the rear shock absorber RS ​​absorbs vibrations transmitted from the rear wheel RW. The rear wheel RW is rotatably mounted to the rear frame body RB. The front wheel FW is mounted to the front frame body FB via the front fork FF. That is, the front wheel FW is mounted to the lower end of the front fork FF. The height-adjustable seatpost ASP is conventionally mounted to the seat tube of the front frame body FB and supports the bicycle saddle or saddle S in any suitable manner. The front fork FF is pivotally mounted to the head tube of the front frame body FB. The handlebars H are mounted to the upper end of the steering column or steering tube of the front fork FF. The front fork FF absorbs vibrations transmitted from the front wheel FW. Preferably, the rear shock absorber RS ​​and the front fork FF are electrically adjustable suspensions. For example, the stiffness and / or travel length of the rear shock absorber RS ​​and the front fork FF can be adjusted.

[0071] The human powered vehicle V also includes a drivetrain DT and an electric drive unit DU operatively coupled to the drivetrain DT. Here, for example, the drivetrain DT is of the chain drive type, which includes a crank C, a front sprocket FS, a plurality of rear sprockets CS, and a chain CN. The crank C includes a crank axle CA1 and a pair of crank arms CA2. The crank axle CA1 is rotatably supported to the front frame body FB via the electric drive unit DU. The crank arms CA2 are disposed on opposite ends of the crank axle CA1. A pedal PD is rotatably coupled to a distal end of each of the crank arms CA2. The drivetrain DT can be selected from any type and can be of the belt drive type or the shaft drive type.

[0072] The electric drive unit DU has an electric motor that provides a drive assist force to the front sprocket FS. The electric drive unit DU can be actuated so as to assist in the propulsion of the human powered vehicle V in a conventional manner. The electric drive unit DU is actuated, for example, in accordance with a drive force applied to the pedal PD by a human. The electric drive unit DU is actuated by electrical power supplied by a main battery pack BP mounted on the lower tube of the human powered vehicle V. The main battery pack BP can provide electrical power to other vehicle components, such as the rear derailleur RD, the height adjustable seat post ASP, the rear suspension RS, the front fork FF, and any other vehicle components that use electrical power.

[0073] The human powered vehicle V also includes a bicycle computer SC. Here, the bicycle computer SC is mounted to the front frame body FB. Alternatively, the bicycle computer SC can be disposed on the handlebars H. The bicycle computer SC alerts the rider to various ride and / or operating conditions of the human powered vehicle V. The bicycle computer SC can also include various control programs for automatically controlling one or more vehicle components. For example, the bicycle computer SC can be provided with an automatic shifting program for changing the gear of the rear derailleur RD based on one or more ride and / or operating conditions of the human powered vehicle V.

[0074] Here, the human powered vehicle V also includes a rear derailleur RD attached to the rear frame body RB for moving the chain CN between the rear sprockets CS. The rear derailleur RD is a type of gear shifting device. Here, the rear derailleur RD is an electric derailleur (i.e., an electric gear shifting device or an electric transmission device). Here, the rear derailleur RD is disposed on the rear side of the rear frame body RB, proximate to the hub assembly 10A. The rear derailleur RD can be operated when the rider of the human powered vehicle V manually operates a shifting operation device or shifter SL. The rear derailleur RD can also be automatically operated based on ride and / or operating conditions of the human powered vehicle V. The human powered vehicle V can also include a plurality of electronic components. Some or all of the electronic components can be supplied with electrical power generated by the hub assembly 10A during a power generation state as discussed herein.

[0075] Reference will now be made to the drawings in which Figures 2-5The structure of the hub assembly 10A is described. The hub assembly 10A basically includes a hub shaft 12 and a hub body 14. The hub shaft 12 is configured to be non-rotatably attached to the vehicle body VB. In this embodiment, the hub shaft 12 is configured to be non-rotatably attached to the rear frame body RB. The hub body 14 is rotatably mounted on the hub shaft 12 to rotate about a rotational center axis Al of the hub assembly 10A. The hub body 14 is one example of a rotational body that is rotatably mounted on the hub shaft 12 to rotate about the rotational center axis Al of the hub assembly 10A. The hub shaft 12 has a central axis that is coaxial with the rotational center axis Al. The hub body 14 is rotatably disposed about the rotational center axis Al. In other words, the hub body 14 is rotatably mounted around the hub shaft 12. The hub shaft 12 is a rigid member made of a suitable material, such as a metallic material.

[0076] As shown in Figure 5 , the hub shaft 12 has a first axial end portion 12a and a second axial end portion 12b. Here, the hub shaft 12 is a tubular member. Thus, the hub shaft 12 has an axial bore 12c extending between the first axial end portion 12a and the second axial end portion 12b. The hub shaft 12 can be a single-piece member or made of several pieces.

[0077] Here, as shown in Figure 2 and Figure 5 , the hub assembly 10A further includes a wheel retaining mechanism 16 for securing the hub shaft 12 of the hub assembly 10A to the rear frame body RB. The wheel retaining mechanism 16 basically includes a shaft or skewer 16a, a cam body 16b, a cam lever 16c, and an adjusting nut 16d. The cam lever 16c is attached to one end of the skewer 16a via the cam body 16b, while the adjusting nut 16d is threadedly connected on the other end of the skewer 16a. The cam lever 16c is attached to the cam body 16b. The cam body 16b is coupled between the skewer 16a and the cam lever 16c to move the skewer 16a relative to the cam body 16b. Thus, the cam lever 16c is operated to move the skewer 16a relative to the cam body 16b in the axial direction of the rotational center axis Al to change the distance between the cam body 16b and the adjusting nut 16d. Preferably, a compression spring is provided at each end of the skewer 16a. The wheel retaining mechanism 16 is sometimes referred to as a quick release skewer. The wheel retaining mechanism 16 is typically used with a frame having a pair of U-shaped axle attachments, each having an end opening slot for receiving a portion of the skewer 16a. Alternatively, the hub shaft 12 can be non-rotatably attached to the rear frame body RB with other attachment structures as needed and / or desired.

[0078] As shown in Figure 1 , Figure 3 and Figure 4As shown, the hub body 14 is rotatably mounted around the hub shaft 12 to rotate in the drive rotation direction D1. The hub body 14 is a rigid member made of a suitable material (e.g., a metallic material or a reinforced plastic material). The drive rotation direction D1 corresponds to the forward drive direction of the rear wheel RW. The hub body 14 is configured to support the rear wheel RW in a conventional manner. More specifically, in the illustrated embodiment, the hub body 14 includes a first outer flange 14a and a second outer flange 14b. The first outer flange 14a and the second outer flange 14b extend radially outward from the outer peripheral surface of the hub body 14 relative to the rotation center axis A1, and the first outer flange 14a and the second outer flange 14b are configured to receive a plurality of spokes ( Figure 1 ), used to mount the rim of the rear RW wheel ( Figure 1 It is attached to the wheel hub body 14. In this way, the wheel hub body 14 and the rear wheel RW are connected to rotate together.

[0079] like Figure 5 As shown, the hub body 14 has a large opening 14c for receiving the end wall 18 and the locking ring 20. The end wall 18 is non-rotatably engaged with the hub body 14. Here, for example, the end wall 18 has a splined outer peripheral surface 18a that engages with the splined inner surface 14d of the hub body 14. The end wall 18 is held to the hub body 14 by the locking ring 20. Here, for example, the locking ring 20 is threaded into the hub body 14. The end wall 18 has a splined inner peripheral surface 18b that spline-engages with the inner support body 22. Specifically, the inner support body 22 has an outer splined portion 22a that spline-engages with the splined inner peripheral surface 18b to non-rotatably connect the inner support body 22 to the end wall 18. Thus, the hub body 14, the end wall 18, the locking ring 20, and the inner support body 22 rotate together as a unit around the hub shaft 12.

[0080] Here, the hub assembly 10A also includes a sprocket support body 24, which is rotatably disposed about a rotational central axis A1 to transmit driving force to the hub body 14 while rotating about the rotational central axis A1 in the driving rotation direction. The sprocket support body 24 is another example of a rotating body, which is rotatably mounted on the hub shaft 12 to rotate about the rotational central axis A1 of the hub assembly 10A. Therefore, broadly speaking, the hub assembly 10A includes a hub shaft 12 and a rotating body (e.g., hub body 14 or sprocket support body 24). The rotating body (e.g., hub body 14 and / or sprocket support body 24) is rotatably mounted on the hub shaft 12 to rotate about the rotational central axis A1 of the hub assembly 10A. The sprocket support body 24 is a rigid member made of a suitable material, such as a metallic material.

[0081] In the illustrated embodiment, the sprocket support body 24 supports the rear sprocket CS, as shown below. Figure 2As shown. The sprocket support body 24 is rotatably arranged around the rotation center axis A1 so as to transmit driving force to the hub body 14 while rotating around the rotation center axis A1 in the driving rotation direction. As described below, the sprocket support body 24 does not transmit driving force to the hub body 14 when rotating around the rotation center axis A1 in the non-driving rotation direction D2. The non-driving rotation direction D2 is opposite to the driving rotation direction D1 relative to the rotation center axis A1. The rotation center axis of the sprocket support body 24 is concentrically arranged with the rotation center axis A1 of the hub assembly 10A.

[0082] Although the sprocket support body 24 is configured to non-rotatably support the rear sprocket CS, the sprocket support body 24 is not limited to the illustrated embodiment. Alternatively, one or more of the rear sprockets CS may be integrally formed with the sprocket support body 24. In any case, the sprocket support body 24 and the rear sprockets CS are coupled together to rotate together in the driving rotation direction D1 and the non-driving rotation direction D2.

[0083] like Figure 5 As shown, the hub assembly 10A also includes a first bearing 30 and a second bearing 32. The first bearing 30 rotatably supports a first end of the hub body 14 onto the hub shaft 12. Specifically, the first bearing 30 rotatably supports an inner support body 22, which is fixedly connected to the first end of the hub body 14 via an end wall 18. The second bearing 32 rotatably supports a second end of the hub body 14 onto the hub shaft 12. Here, the first bearing 30 also rotatably supports a sprocket support body 24 onto the hub shaft 12. Therefore, broadly speaking, the first bearing 30 rotatably supports the first end of a rotating body (e.g., the hub body 14 and / or the sprocket support body 24) onto the hub shaft 12, and the second bearing 32 rotatably supports the second end of the rotating body (e.g., the hub body 14 and / or the sprocket support body 24) onto the hub shaft 12.

[0084] Here, the hub assembly 10A also includes a double nut 34. The double nut 34 is threaded onto the hub shaft 12. Therefore, the double nut 34 restricts the axial movement of the hub body 14, the sprocket support body 24, and other components of the hub assembly 10A toward the first axial end 12a of the hub shaft 12 in the axial direction. The double nut 34 includes a first nut 36 and a second nut 38. Preferably, the first nut 36 and the second nut 38 are disposed inside the rotating body (e.g., the hub body 14 and / or the sprocket support body 24). Here, the first nut 36 and the second nut 38 are disposed inside the sprocket support body 24 (i.e., one of the rotating bodies).

[0085] In the illustrated embodiment, the first nut 36 is part of the first bearing 30. In particular, the first nut 36 comprises an inner race of the first bearing 30. More particularly, the first bearing 30 comprises an inner race 30a (first nut 36), an outer race 30b, and a plurality of rolling elements 30c. The inner race 30a (first nut 36) has an inner thread 30al that threadingly engages to the first outer thread 12d of the hub shaft 12. The outer race 30b has an inner thread 30bl that threadingly engages to the outer thread 22b of the inner support body 22. The roller elements 30c are disposed between the inner race 30a and the outer race 30b. The inner race 30a (first nut 36) supports the plurality of rolling elements 30c of the first bearing 30. In particular, the first nut 36 has a bearing surface 36a that supports the plurality of rolling elements 30c of the first bearing 30. By changing the position of the inner race 30a on the hub shaft 12, the axial force on the roller elements 30c can be adjusted. The second nut 38 has an inner thread 38a that threadingly engages to the first outer thread 12d of the hub shaft 12.

[0086] The second bearing 32 comprises an inner race 32a, an outer race 32b, and a plurality of roller elements 32c. The inner race 32a threadingly engages to the second thread 12e of the hub shaft 12. The roller elements 32c are disposed between the inner race 32a and the outer race 32b. The inner race 32a supports the plurality of rolling elements 32c of the second bearing 32. By changing the position of the inner race 30a on the hub shaft 12, the axial force on the roller elements 30c can be adjusted.

[0087] The first bearing 30 and the second bearing 32 are angular contact ball bearings. Angular contact ball bearings have inner and outer ring raceways that are displaced relative to each other in the direction of the bearing axis. In other words, angular contact bearings are designed to take up combined loads, i.e. radial and axial loads acting simultaneously. Furthermore, for the first bearing 30 and the second bearing 32, angular contact roller bearings (i.e. tapered roller bearings) can be employed instead of angular contact ball bearings. Angular contact roller bearings include cylindrical roller bearings and needle roller bearings.

[0088] The first nut 36 has a first tool engagement structure 36b. The second nut 38 has a second tool engagement structure 38b. The first nut 36 and the second nut 38 are in threaded engagement with the outer thread 12d of the hub shaft 12. The first tool engagement structure 36b and the second tool engagement structure 38b face outward in the axial direction relative to the rotational center axis Al. When viewed from the axial direction, the first tool engagement structure 36b is disposed radially outward of the second tool engagement structure 38b relative to the rotational center axis Al.

[0089] The first tool engagement structure 36b and the second tool engagement structure 38b are accessible in the axial direction with a tool 40 (see Figure 9 ). As Figure 9As shown, the tool 40 has a first tool cylinder 40a and a second tool cylinder 40b. The second tool cylinder 40b is rotatably disposed within the first tool cylinder 40a. The first tool cylinder 40a and the second tool cylinder 40b can be rotated independently or together. The first tool cylinder 40a includes a first nut engagement structure 40al that is configured to engage the first tool engagement structure 36b of the first nut 36. The second tool cylinder 40b includes a second nut engagement structure 40bl that is configured to engage the second tool engagement structure 38b of the second nut 38. Of course, other types of tools can be used as desired and / or as desired.

[0090] The hub assembly 10A also includes a plurality of first rolling elements 42 and a plurality of second rolling elements 44. The first rolling elements 42 and the second rolling elements 44 rotatably support the sprocket support body 24. The first rolling elements 42 are disposed between the outer race 30b and the sprocket support body 24. In particular, the outer race 30b has an inner race surface 42a and the sprocket support body 24 has an outer race surface 42b. The first rolling elements 42 are disposed between the inner race surface 42a and the outer race surface 42b to form a first sprocket support body bearing 46. The second rolling elements 44 are disposed between the inner support body 22 and the sprocket support body 24. In particular, the inner support body 22 has an inner race surface 44a and the sprocket support body 24 has an outer race surface 44b. The second rolling elements 44 are disposed between the inner race surface 44a and the outer race surface 44b to form a second sprocket support body bearing 48.

[0091] The first sprocket support body bearing 46 and the second sprocket support body bearing 48 are angular contact ball bearings. Further, angular contact roller bearings (i.e., tapered roller bearings) can be employed in place of the angular contact ball bearings for the first sprocket support body bearing 46 and / or the second sprocket support body bearing 48.

[0092] As Figure 6 As shown, the hub assembly 10A also includes a one-way clutch 50 formed between the hub body 14 and the sprocket support body 24. The one-way clutch 50 includes a plurality of pawls 50A disposed between the hub body 14 and the sprocket support body 24. The one-way clutch 50 also includes a biasing element 50B that couples the pawls 50A to the sprocket support body 24. The one-way clutch 50 also includes a plurality of ratchet teeth 50C. Here, the ratchet teeth 50C are disposed on an inner surface of the sprocket support body 24. The biasing element 50B biases the pawls 50A into engagement with the ratchet teeth 50C. The biasing element 50B presses the pawls 50A against the sprocket support body 24 such that the pawls 50A pivot in a direction toward engagement with the ratchet teeth 50C.

[0093] Thus, the sprocket support body 24 is connected to the hub body 14 to rotate together about the rotation center axis A1 in the driving rotation direction D1. Furthermore, when the sprocket support body 24 rotates in the non-driving rotation direction D2, the ratchet teeth 50C of the sprocket support body 24 push the pawl 50A and pivot the pawl 50A to a retracted position against the sprocket support body 24. Therefore, the sprocket support body 24 is configured to rotate relative to the hub body 14 about the rotation center axis A1 in the non-driving rotation direction D2. In this way, the sprocket support body 24 and the one-way clutch 50 form a freewheel commonly used in bicycles. Since the basic operation of the freewheel is relatively conventional, it will not be discussed or shown in further detail.

[0094] like Figure 5 As shown, the hub assembly 10A includes an electrical component 52. The electrical component 52 is disposed on the hub shaft 12. Specifically, the electrical component 52 is non-rotatably disposed on the hub shaft 12. Therefore, the electrical component 52 is non-rotatably disposed relative to the rotation center axis A1. In the illustrated embodiment, the electrical component 52 is disposed between the first bearing 30 and the second bearing 32. Preferably, the electrical component 52 is disposed within the hub body 14.

[0095] Here, the electrical component 52 includes a housing 54, which is non-rotatably mounted on the hub shaft 12. For example, in the illustrated embodiment, the housing 54 is keyed to the hub shaft 12 to prevent rotation of the housing 54 relative to the hub shaft 12. Essentially, the housing 54 includes a housing body 54A and a cover 54B. Here, the cover 54B is bonded to the housing body 54A by adhesive or welding. However, the cover 54B can also be attached to the housing body 54A by threaded fasteners, rivets, etc. Preferably, the housing body 54A and the cover 54B are rigid components made of a suitable material. For example, the housing body 54A and the cover 54B are made of resin material. For example, the housing body 54A and the cover 54B can each be an injection-molded component.

[0096] Furthermore, the electrical component 52 includes a circuit board 56. The circuit board 56 is disposed within the housing 54. Specifically, the circuit board 56 is attached to the housing body 54A. Thus, the circuit board 56 is non-rotatable relative to the hub shaft 12. The circuit board 56 is disposed perpendicular to the rotation center axis A1. A cover 54B is attached to the housing body 54A to enclose the circuit board 56 within the housing 54.

[0097] The circuit board 56 also includes an electronic controller 58 disposed on the circuit board 56. The electronic controller 58 includes at least one processor executing a predetermined control program. The at least one processor may be, for example, a central processing unit (CPU) or a microprocessor unit (MPU). As used herein, the term "electronic controller" refers to hardware executing software programs and excludes human intervention. Preferably, the circuit board 56 also includes a data storage device (memory) disposed on the circuit board 56. This data storage device (memory) stores various control programs and information for various control processes, including power generation control, energy storage control, wheel hub rotation detection control, etc. The data storage device includes any computer storage device or any non-transitory computer-readable medium, with the sole exception of transient propagation signals. For example, the data storage device includes non-volatile memory and volatile memory. Non-volatile memory includes, for example, at least one of read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), and flash memory. Volatile memory includes, for example, random access memory (RAM).

[0098] like Figure 5 As shown, the hub assembly 10A also includes a detected component 60 and a rotation detection sensor 62. The rotation detection sensor 62 is configured to detect the detected component 60. The detected component 60 is disposed on the rotating body. Here, the detected component 60 is disposed on the end wall 18 of the hub body 14. On the other hand, the rotation detection sensor 62 is disposed on the housing 54. Here, the rotation detection sensor 62 is disposed at a position separate from the circuit board 56. In particular, the rotation detection sensor 62 is disposed at a position separate from the circuit board 56 in a direction parallel to the rotation center axis A1. Therefore, the rotation detection sensor 62 is non-rotatably disposed on the hub shaft 12. Moreover, the rotation detection sensor 62 can be placed near the detected component 60. In other words, the rotation detection sensor 62 does not rotate with the hub body 14. Using this arrangement, the electrical component 52 includes the rotation detection sensor 62. The rotation detection sensor 62 is electrically connected to the electronic controller 58 via the circuit board 56. The electronic controller 58 is configured to receive the detection signal from the rotation detection sensor 62. Therefore, the electronic controller 58 can determine information about the rotation of the hub body 14 on the hub shaft 12.

[0099] In the illustrated embodiment, the rotation detection sensor 62 includes a magnetic sensor, and the detected component 60 includes a magnet. Therefore, the magnetic sensor detects the movement of the magnet rotating together with the hub body 14. In other words, using this arrangement, the rotation detection sensor 62 is configured to detect the detected component 60 to detect the rotation of the hub body 14 about the rotational central axis A1. The electronic controller 58 is configured to receive detection signals from the rotation detection sensor 62.

[0100] Here, the magnet of the detected component 60 is an annular member with alternating S-pole and N-pole segments. The detected component 60 is fixed to the end wall 18 of the hub body 14. Thus, the rotation detection sensor 62 can detect the amount and direction of rotation of the hub body 14. However, the detected component 60 is not limited to the annular member shown. For example, the detected component 60 may be formed by a single non-annular magnet or two or more magnets circumferentially spaced around the rotation center axis A1. When using two or more circumferentially spaced magnets, a rear yoke can be provided, and the circumferentially spaced magnets can be placed on the rear yoke. This allows the circumferentially spaced magnets to be easily installed in the hub 10. The term "sensor" as used herein refers to a hardware device or instrument designed to detect the presence or absence of a specific event, object, or substance, or to detect changes in its environment and emit a signal in response. The term "sensor" as used herein does not include humans.

[0101] like Figure 5 As shown, the hub assembly 10A also includes a power generator 70. The power generator 70 is configured to generate electricity through the rotation of the hub body 14. Furthermore, in the illustrated embodiment, the electrical component 52 includes at least one capacitor 72 electrically connected to the power generator 70. Here, the electrical component 52 includes two capacitors 72. The capacitors 72 are examples of power storage for the electrical component 52. The capacitors 72 are preferably disposed within the housing 54 of the hub assembly 10A. Thus, the capacitors 72 are non-rotatably supported on the hub axle 12 by the housing 54. The circuit board 56 is electrically connected to the rotation detection sensor 62 and the capacitors 72. In this way, the capacitors 72 provide power to the circuit board 56 and other electrical components electrically connected to the circuit board 56. For example, the capacitors 72 provide power to the rotation detection sensor 62. Moreover, the electronic controller 58 of the circuit board 56 is configured to control the input and output of power from the capacitors 72.

[0102] A power generator 70 is disposed on the wheel hub body 14. More specifically, the power generator 70 is disposed on the wheel hub body 14 between the hub axle 12 and the central portion of the wheel hub body 14. In the illustrated embodiment, the wheel hub body 14 is rotatably mounted on the axle 12 to rotate about the rotational center axis A1 of the power generator 70. The power generator 70 is configured to generate electricity through the rotation of the wheel hub body 14 relative to the hub axle 12. An electronic controller 58 of the circuit board 56 is electrically connected to the power generator 70 to control the power output of the power generator 70. Therefore, the electricity generated by the power generator 70 can be stored and / or directly supplied to other components, such as the rotation detection sensor 52, the rear derailleur RD, etc.

[0103] In the illustrated embodiment, the power generator 70 further includes a stator 74 and a rotor 76. The stator 74 is non-rotatable relative to the hub shaft 12. On the other hand, the rotor 76 is rotatably mounted on the hub shaft 12 to rotate about the rotational central axis A1 of the power generator 70. Specifically, the rotor 76 is disposed to the hub body 14 so as to rotate together with the hub body 14. Therefore, when the hub body 14 rotates relative to the hub shaft 12, the rotor 76 rotates relative to the stator 74 to generate electricity. That is, the rotation of the rotor 76 induces an electromotive force in the stator 74, and current flows out from the stator 74 of the power generator 70.

[0104] like Figure 5 As shown, the stator 74 includes an armature disposed on the hub shaft 12. The armature of the stator 74 includes a winding coil 74A and a winding frame 74B. The winding coil 74A is wound on the winding frame 74B, which supports the winding coil 74A. The winding frame 74B is non-rotatably connected to the hub shaft 12. The winding frame 74B has a cylindrical body portion, a first flange portion, and a second flange portion. The cylindrical body portion has an outer periphery on which the winding coil 74A is wound. The first flange portion and the second flange portion are formed at two axial ends of the cylindrical body portion. The winding coil 74A is made of a conductive metal wire, such as copper wire or aluminum alloy wire. The winding coil 74A is electrically connected to a circuit board 56. Thus, the power generated in the winding coil 74A is transmitted to the circuit board 56 of the electrical component 52. The circuit board 56 then regulates the power received from the winding coil 74A to selectively store the power in the capacitor 72 and / or selectively transmit the power via the cable 78 to the outside of the hub assembly 10A.

[0105] Cable 78 is electrically connected to power generator 70 via circuit board 56. Thus, cable 78 can supply power generated by hub assembly 10A to rear derailleur RD, battery pack BP, or other electrical components. Cable 78 can also be used to transmit signals from electronic controller 58 of circuit board 56 to rear derailleur RD or another electrical component using power line communication (PLC).

[0106] The armature of the stator 74 also includes a plurality of first yokes 74C and a plurality of second yokes 74D. The first yokes 74C are arranged circumferentially on the hub shaft 12. Similarly, the second yokes 74D are arranged circumferentially on the hub shaft 12 and alternate with the first yokes 74C. The winding coil 74A is located between the first yokes 74C and the second yokes 74D in the axial direction of the hub shaft 12. Here, the first yokes 74C and the second yokes 74D are fitted into recesses in the winding frame 74B such that the first yokes 74C and the second yokes 74D alternate circumferentially about the rotation center axis A1. The first yokes 74C and the second yokes 74D can be attached to the winding frame 74B, for example, with adhesive.

[0107] Each first yoke 74C can be a laminated yoke composed of a plurality of laminations or can be a single piece. In the case of a laminated yoke, the laminations of the first yoke 74C are laminated together in a circumferential direction about the rotation center axis Al. The laminations of the first yoke 74C are made of, for example, silicon steel sheets (more specifically, non-oriented silicon steel sheets) on the surfaces of which oxide films are formed. The laminations of the first yoke 74C are examples of plate-like members.

[0108] Similarly, the second yoke 74D can be a laminated yoke composed of a plurality of laminations or can be a single piece. In the case of a laminated yoke, the laminations of the second yoke 74D are laminated together in a circumferential direction about the rotation center axis Al. The laminations of the second yoke 74D are made of, for example, silicon steel sheets (more specifically, non-oriented silicon steel sheets) on the surfaces of which oxide films are formed. The laminations of the second yoke 74D are examples of plate-like members.

[0109] The rotor 76 includes at least one magnet. Here, in the illustrated embodiment, the rotor 76 includes a plurality of first magnet members 76A and a plurality of second magnet members 76B arranged within a tubular support 76C. The tubular support 76C is fixedly coupled to the inside of the hub body 14 so that the magnet (rotor 76) and the hub body 14 rotate together about the hub shaft 12. The tubular support 76C has the function of a back yoke. A back yoke is a member having high magnetic permeability that is arranged on the opposite side of a magnetized surface. By using a back yoke, a high generated magnetic field can be obtained. The tubular support 76C can be omitted. Alternatively, the hub body 14 can have the magnet 76 so that the hub body 14 partially forms the power generator 70. The first magnet members 76A and the second magnet members 76B are arranged so that the S poles and the N poles of the first magnet members 76A and the second magnet members 76B are arranged in alternation in the circumferential direction of the hub shaft 12. Thus, in the axial direction of the hub shaft 12, the S pole of the first magnet member 76A is not aligned with the S pole of the second magnet member 76B, and the N pole of the first magnet member 76A is not aligned with the N pole of the second magnet member 76B.

[0110] As described above, the winding coil 74A is shown as being fixed relative to the hub shaft 12, and the magnet (rotor 76) is shown as being fixed relative to the hub body 14. Alternatively, the winding coil 74A can be fixed relative to the hub body 14, and the magnet magnet (rotor 76) can be fixed relative to the hub shaft 12.

[0111] The hub assembly 10A comprises a user input device 80. The user input device 80 can for example be a reset switch which forces the electrical component 52 to be de-energized. Alternatively, the user input device 80 can be configured to change one or more parameters, such as a threshold value, in total. Here, the user input device 80 is a push switch which comprises an operated member 80A and a base member 80B. The operated member 80A is movable relative to the base member 80B. The base member 80B comprises an electrical circuit which is normally in an open state or a closed state. In response to a movement of the operated member 80A relative to the base member 80B, for example being pushed in the illustrated embodiment, the open state or the closed state of the electrical circuit is changed to the other state.

[0112] When the user operates, for example pushes, the operated member 80A, an input signal is generated which is transmitted to the electrical component 52 via the electrical cable 82. In this way, the user input device 80 is electrically coupled to the electrical component 52. In particular, in the illustrated embodiment, the user input device 80 is electrically connected to the circuit board 56 via the electrical cable 82. In this way, the user input device 80 is electrically connected to the circuit board 56. With this arrangement, the user input device 80 does not comprise a wireless communication receiver. In the illustrated embodiment, the hub shaft has a cable receiving channel 12f for receiving the electrical cable 82. The cable receiving channel 12f extends axially between the electrical component 52 and the user input device 80. Thus, the user input device 80 is spaced apart in axial direction relative to the electrical component 38.

[0113] The user input device 80 is configured to be operated by the user without having to dismount the hub assembly 10A. Furthermore, preferably, the user input device 80 is configured to be operated by the user when the hub assembly 10A is mounted to the vehicle body VB of the human-powered vehicle V. Here, the user input device 80 is disposed outside the hub body 14. In particular, the user input device 80 is disposed inside the sprocket support body 24. Preferably, the user input device 80 is disposed between the first bearing 30 and the axial end 12a of the hub shaft 12. Also, preferably, the user input device 80 is located on the axial outer side of the double nut 34 relative to the central axis of rotation Al and is at least partially aligned with the double nut 34 in axial direction. Preferably, the first tool engagement structure 36b is located radially outside the user input device 80. More preferably, the second tool engagement structure 38b is located radially outside the user input device 80. In this way, the user input device 80 is operated by the user. The user input device 80 is an electrical component, for example an electrical switch, which is located near the first axial end 12a of the hub shaft 12. Alternatively, the user input device 80, i.e. the electrical component, can be located near the second axial end 12b of the hub shaft 12. Thus, in a broad sense, in the hub assembly 10A, the electrical component 52 is located near an axial end of the hub shaft 12 on the axial outer side of the double nut 34 relative to the central axis of rotation Al.

[0114] Here, as shown in Figure 5 FIG. 1, the hub assembly 10A further includes an end cap 84 disposed on an axial end of the hub shaft 12. Here, the end cap 84 is disposed on the first axial end 12a of the hub shaft 12. The end cap 84 supports the user input device 80 to the hub shaft 12. The user input device 80 is operatively accessible through an opening 84A in the end cap 84. Also, the electrical cable 78 enters the hub assembly 10A through an opening 54b of the end cap 84. The electrical cable 78 then extends axially along the hub shaft 12 and into the housing 54 of the electrical component 52. Preferably, as in the illustrated embodiment, the electrical cable 78 is disposed in a cable receiving channel 12g of the hub shaft 12, as shown in Figure 5 FIG. 1. Here, the cable receiving channel 12g is an axially extending groove or channel. In this way, the electrical cable 78 can be located in the cable receiving channel 12g extending from the electrical component 52 to the first axial end 12a of the hub shaft 12.

[0115] The end cap 84 further includes a rotation limiting portion 84c. The rotation limiting portion 84c is configured to couple the hub shaft 12 to the vehicle body VB of the human powered vehicle V such that rotation of the hub shaft 12 relative to the vehicle body VB is limited. The rotation limiting portion 84c engages the rear bike body RB such that rotation of the hub shaft 12 relative to the rear bike body RB is limited. Thus, the rotation limiting portion 84c is removably attached to the hub shaft 12.

[0116] Referring now to Figure 10 FIG. 1, the hub assembly 10A is electrically connected to the rear derailleur RD by the electrical cable 78. Here, optionally, the cover 90 is snap fit over the rear bike body RB or covers the U-shaped axle attachments, each of which has an end opening slot or U-shaped slot (dropout) that receives a portion of the prong 16a. Thus, without removing the cover 90, the hub assembly 10A cannot be removed from the rear bike body RB. Removing the cover 90 would alert the user to disconnect the electrical cable 78 from the rear derailleur RD before removing the hub assembly 10A from the rear bike body RB. The same configuration can be employed for other electrical components other than the rear derailleur RD.

[0117] Referring now to Figure 11 The hub assembly 10B will now be briefly discussed. Like the hub assembly 10A, the hub assembly 10B is a hub generator for providing electrical power to one or more components of the human powered vehicle V. The structure of the hub assembly 10B is identical to that of the hub assembly 10A except that the hub assembly 10B is not configured with a sprocket support structure. Thus, for the sake of brevity, components of the hub assembly 10B that are identical to corresponding components of the hub assembly 10A will not be discussed with respect to the hub assembly 10B. Thus, the following description will focus on the differences between the hub assembly 10B and the hub assembly 10A.

[0118] Essentially, the hub assembly 10B includes a hub shaft 12' and a hub body 14'. The hub body 14' is rotatably mounted on the hub shaft 12' so as to rotate about a center axis of rotation Al'of the hub assembly 10B. The hub assembly 10B also includes a wheel retention mechanism 16' which is identical to the wheel retention mechanism 16 but is shorter in the axial direction.

[0119] The hub assembly 10B also includes a first bearing 30' and a second bearing 32'. The first bearing 30' rotatably supports a first end of the hub body 14' on the hub shaft 12'. In particular, the first bearing 30' rotatably supports the end wall 18' of the hub body 14'. The second bearing 32' rotatably supports a second end of the hub body 14' on the hub shaft 12'. Here, the hub assembly 10B also includes a double nut 34'. The double nut 34' is threadably coupled to the hub shaft 12'. The double nut 34' includes a first nut 36' and a second nut 38'. Preferably, the first nut 36' and the second nut 38' are at least partially disposed inside the hub body 14' (i.e., the rotating body). Here, similar to the first embodiment, the first nut 36' is part of the first bearing 30'. In particular, the first nut 36' includes an inner race of the first bearing 30'. More specifically, the first bearing 30' includes an inner race 30a' (first nut 36'), an outer race 30b', and a plurality of roller elements 30c'. The inner race 30a' (first nut 36') is threadably engaged to the hub shaft 12'. The outer race 30b' supports the end wall 18' of the hub shaft 12'. The roller elements 30c' are disposed between the inner race 30a' and the outer race 30b'.

[0120] Similar to the hub assembly 10A, the hub assembly 10B also includes the electrical component 52', the electrical power generator 70', and the user input device 80'. The electrical component 52' is identical to the electrical component 52 discussed above. The electrical power generator 70' is identical to the electrical power generator 70 discussed above. The user input device 80' is identical to the user input device 80 discussed above. However, a modified end cap 84' is used to mount the user input device 80' to the hub shaft 12'. Here, the end cap 84' is configured such that the electrical cable 78' of the electrical component 52' extends upwardly from the hub shaft 12' with the hub assembly 10B mounted to the human-powered vehicle V.

[0121] Reference is now made to Figure 12 , which shows a modified hub assembly 110 according to an alternative embodiment. In view of the similarities between the hub assembly 110 and the hub assembly 10A, the same reference numerals will be given to the components of the hub assembly 110 that are identical to the hub assembly 10A. Accordingly, the following description will focus on the differences between the hub assembly 110 and the hub assembly 10A.

[0122] Basically, the hub assembly 110 comprises a hub axle 112 and a hub body 114. The hub body 114 is rotatably mounted on the hub axle 112 so as to rotate around a center axis of rotation Al of the hub assembly 110. Here, the hub axle 112 and the hub body 114 have been modified to have electrical components 152 and a user input device 180, wherein the user input device 180 is provided to the hub body 114. Thus, in this embodiment, the user input device 180 is provided inside the hub body 114. Since the hub body 114 rotates relative to the electrical components 152, the user input device 180 will rotate with the hub body 114. The user input device 180 can be electrically connected to the electrical components 152 by using a mechanical connection, wherein a brush provided on one of the electrical components 152 and the user input device 180 rotates relative to a resistor provided on the other one of the electrical components 152 and the user input device 180. Alternatively, short-range wireless communication can be used to transmit input signals from the user input device 180 to the electrical components 152.

[0123] In understanding the scope of the present application, the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that specify the presence of the stated features, elements, components, groups, integers, and / or steps, but do not exclude the presence of one or more additional features, elements, components, groups, integers, and / or steps. The foregoing also applies to other descriptive terms such as "comprising," "having," "including," and their derivatives, as well as to the term, "consisting of." Furthermore, the term "a" or "one" or "the" when used in the context of a singular noun, can also be taken to mean "one or more" unless otherwise indicated. Lastly, the term "exemplary" as used herein means serving as an example, instance, or illustration, and not necessarily as preferable or advantageous over other examples.

[0124] As used herein, the following directional terms "frame facing side," "non-frame facing side," "forward," "rearward," "front," "back," "up," "down," "above," "below," "upward," "downward," "top," "bottom," "side," "vertical," "horizontal," "perpendicular," and "transverse," and any other like directional terms refer to those directions of a human powered vehicle (e.g., a bicycle) in an upright riding position and equipped with a hub assembly. Accordingly, these directional terms used to describe a hub assembly should be interpreted with respect to a human powered vehicle (e.g., a bicycle) in an upright riding position and equipped with a hub assembly on a horizontal surface. The terms "left" and "right" are used to denote "right" as referenced from the right side when viewed from the rear of the human powered vehicle (e.g., a bicycle), and "left" as referenced from the left side when viewed from the rear of the human powered vehicle (e.g., a bicycle).

[0125] The phrase "at least one of" as used in this disclosure refers to "one or more of". As an example, the phrase "at least one of" as used in this disclosure refers to "only one single selection" or "two of the two selections", if the number of selections is two. As another example, the phrase "at least one of" as used in this disclosure refers to "only one single selection" or "any combination of equal to or more than two selections", if the number of selections is equal to or more than three. Also, the term "and / or" as used in this disclosure refers to "any one or both".

[0126] Also, it will be understood that, although the terms "first" and "second" can be used herein to describe various components, these components should not be limited by these terms. These terms are only used to distinguish one component from another. Thus, a first component discussed above could be termed a second component, and, similarly, a second component could be termed a first component without departing from the teachings of the present application.

[0127] The terms "attached" or "attach" as used herein encompasses a configuration in which an element is directly secured to another element by affixing the element to the other element; a configuration in which the element is indirectly secured to the other element by affixing the element to one or more intermediary members, which in turn are affixed to the other element; and a configuration in which one element is integral with the other element, i.e., one element is substantially a portion of the other. The definition also applies to words of similar meaning, for example, "coupled", "connected", "engaged", "mounted", "interfaced", and their derivatives. Finally, the degree terms such as "substantially", "approximately" and "about" as used herein mean an acceptable quantity deviation of the modified term such that the end result is not significantly changed.

[0128] While only selected embodiments have been chosen to illustrate the present application, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made herein without departing from the scope of the present application as defined by the appended claims and their equivalents, some of which have been discussed or are inherent in the foregoing disclosure. For example, unless otherwise specifically noted, the size, shape, location or orientation of the various components can be changed as desired and / or necessary to accomplish the intended functionality, provided that such changes do not substantively change the nature of the functioning of the structure. Unless otherwise specified, the depicted direct connections or contacts between components can have intermediate structures disposed there between, provided that such changes do not substantively change the nature of the functioning of the structure. Unless otherwise specified, the functionality of one element can be performed by two or more elements, and vice versa. The structures and functionality of one embodiment can be employed in another embodiment. All of the advantages noted herein can not be necessarily achieved in one particular embodiment. Each of the individual features recited in any part of this specification including any claim which has unique properties can also be claimed in isolation as a separate application including structural and / or functional concepts embodied by such feature(s). Accordingly, the foregoing description of embodiments of the present application is by way of example only, and is not intended to limit the application as defined by the appended claims and their equivalents.

Claims

1. A hub assembly for a human-powered vehicle, the hub assembly comprising: a hub axle; a rotating body rotatably mounted on the hub axle so as to rotate about a rotational center axis of the hub assembly; and a dual nut comprising a first nut having a first tool engagement structure and a second nut having a second tool engagement structure, the first and second nuts being in threaded engagement with external threads of the hub axle, the first and second tool engagement structures facing outward in an axial direction relative to the rotational center axis, the first tool engagement structure being disposed radially outward of the second tool engagement structure relative to the rotational center axis when viewed from the axial direction.

2. The hub assembly of claim 1, further comprising an electrical component located near an axial end of the hub axle on an axial outer side of the dual nut relative to the rotational center axis.

3. The hub assembly of claim 2, further comprising a detected component disposed on the rotating body, and a rotation detection sensor configured to detect the detected component, the electrical component being disposed on the hub axle and comprising the rotation detection sensor.

4. The hub assembly of claim 3, further comprising a first bearing rotatably supporting a first end of the rotating body on the hub axle; and a second bearing rotatably supporting a second end of the rotating body on the hub axle, and wherein the first nut comprises an inner race of the first bearing.

5. The hub assembly of claim 4, wherein the first and second nuts are disposed inside the rotating body.

6. The hub assembly of claim 1, the rotating body being a hub body of the hub assembly, and the hub assembly further comprising: an electrical component; and a user input device electrically coupled to the electrical component.

7. The hub assembly of claim 6, wherein the electrical component comprises a circuit board, and wherein the user input device is electrically connected to the circuit board.

8. The hub assembly of claim 6, wherein the electrical component is disposed non-rotatably relative to the rotational center axis.

9. The hub assembly of claim 6, wherein the electrical component is disposed in the hub body.

10. The hub assembly of claim 6, wherein the user input device is spaced apart in an axial direction relative to the electrical component.

11. The hub assembly of claim 6, wherein the user input device does not comprise a wireless communication receiver.

12. The hub assembly of claim 6, wherein the hub axle comprises a cable receiving channel extending axially between the electrical component and the user input device.

13. The hub assembly of claim 6, further comprising a first bearing rotatably supporting a first end of the hub body on the hub axle; and ​ ​ a second bearing rotatably supporting a second end portion of the hub body on the hub shaft, and wherein the electrical component is disposed between the first bearing and the second bearing, and the user input device is disposed between the first bearing and an axial end portion of the hub shaft.

14. The hub assembly of claim 6, wherein the user input device is disposed outside of the hub body.

15. The hub assembly of claim 6, wherein the user input device is disposed inside of the hub body.

16. The wheel hub assembly of claim 6, wherein, the rotating body is a sprocket support body rotatably disposed about the rotational center axis to transmit a driving force to the hub body while rotating in a driving rotation direction about the rotational center axis.

17. The hub assembly of claim 16, wherein the user input device is disposed inside of the sprocket support body.

18. The hub assembly of claim 6, further comprising an end cap disposed on an axial end portion of the hub shaft, and the user input device is operatively accessible through an opening in the end cap.

19. The hub assembly of claim 18, wherein the end cap includes a rotation limiting portion configured to couple the hub shaft to a vehicle body of the human-powered vehicle such that rotation of the hub shaft relative to the vehicle body is limited.

20. The hub assembly of claim 6, wherein the user input device is located on an axial outer side of the dual nut relative to the rotational center axis, and is at least partially aligned with the dual nut in the axial direction.

21. The hub assembly of claim 6, wherein the first tool engagement structure and the second tool engagement structure are accessible in an axial direction with a tool.

22. The hub assembly of claim 6, further comprising a first bearing rotatably supporting a first end portion of the hub body on the hub shaft; and a second bearing rotatably supporting a second end portion of the hub body on the hub shaft, and wherein the first nut includes an inner race supporting a plurality of rolling elements of the first bearing.

23. The hub assembly of claim 6, further comprising an electrical power generator disposed to the hub body and configured to generate electrical power by rotation of the hub body.

24. The hub assembly of claim 23, wherein the electrical component includes at least one capacitor electrically connected to the electrical power generator.

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