CN114683766A - Wheel hub for a human powered vehicle - Google Patents

Abstract

The present application provides a wheel hub for a human powered vehicle. The hub basically includes a hub axle, a member, a cable and a sealing element. The member is disposed on the hub axle. The cable extends through the channel. The sealing element is configured to occupy a space between the channel and the cable.

Description

Wheel hub for a human powered vehicle

Technical Field

The present disclosure relates generally to a hub for a human powered vehicle.

Background

Some wheels for human-powered vehicles (e.g., bicycles) have a hub, a plurality of spokes, and an annular rim. The hub has a hub axle non-rotatably mounted to a frame of the human-powered vehicle. The hub has a hub body that is coaxially coupled with the hub axle such that the hub body is disposed radially outward relative to the hub axle. The bearing is configured and arranged to support the hub body such that the hub body can freely rotate about the hub axle. In almost all types of bicycles, except fixed gear and track racing, the wheels of the bicycle (usually the rear wheels) are provided with a bicycle freewheel, which is arranged on the hub of the wheel. Bicycle flywheels typically have a one-way clutch function whereby they transmit torque in only one direction. Thus, the use of a flywheel allows the bicycle to proceed freely without any pedal rotation (i.e., during coasting). During coasting, the bicycle freewheel is considered to be in an idle state in which the bicycle wheel can rotate freely while the sprocket remains stationary.

Disclosure of Invention

In general, the present disclosure is directed to various features of a hub for a human-powered vehicle. The term "human-powered vehicle" as used herein refers to a vehicle that can be driven by at least human-powered driving force, but does not include vehicles that use only driving power other than human power. In particular, a vehicle using only an internal combustion engine as driving power is not included in a human-powered vehicle. It is generally assumed that human powered vehicles are compact, light vehicles, which often do not require a license to travel on public roads. The number of wheels on a human powered vehicle is not limited. Human powered vehicles include, for example, unicycles and vehicles having three or more wheels. Human powered vehicles include, for example, various types of bicycles, such as mountain bikes, road bikes, city bikes, freight bikes, and recumbent bikes, and electric-assisted bikes (E-bike).

In view of the state of the known technology and according to a first aspect of the present disclosure, a wheel hub for a human-powered vehicle is provided. The hub basically includes a hub axle, a member, a cable and a sealing element. The member is disposed on the hub axle. The cable extends through the channel. The sealing element is configured to occupy a space between the channel and the cable.

With the hub according to the first aspect, it is possible to prevent contaminants from entering the hub via the passage through which the cable extends.

According to a second aspect of the present disclosure, the hub according to the first aspect is configured such that: the sealing element has an inner circumferential surface contacting the cable and an outer circumferential surface contacting the channel.

With the hub according to the second aspect, it is possible to ensure a reliable seal between the cable and the channel.

According to a third aspect of the present disclosure, the hub according to the second aspect is configured such that: the inner peripheral surface of the sealing member is deformed by receiving a force along the cable central axis of the cable, and the inner peripheral surface of the sealing member is in contact with the outer surface of the cable.

With the hub according to the third aspect, it is possible to easily mount the sealing element on the cable while obtaining a reliable seal between the cable and the sealing element.

According to a fourth aspect of the present disclosure, the hub according to the second or third aspect is configured such that: the outer circumferential surface of the sealing element is deformed by receiving a force along the cable central axis of the cable, and the outer circumferential surface of the sealing element is in contact with the inner surface of the passage.

With the hub according to the fourth aspect, it is possible to easily install the cable and the sealing element within the channel while obtaining a reliable seal between the outer circumferential surface of the sealing element and the inner surface contact portion of the channel.

According to a fifth aspect of the present disclosure, the hub according to any of the second to fourth aspects further comprises a first spacer and a second spacer. The first spacer is located on a first axial side of the sealing element with respect to a cable central axis of the cable. The second spacer is located on a second axial side of the sealing element with respect to the cable central axis, the second axial side being opposite the first axial side with respect to the cable central axis, wherein the sealing element abuts against the first spacer and the second spacer.

With the hub according to the fifth aspect, it is possible to reliably deform the sealing element to seal the space between the cable and the channel.

According to a sixth aspect of the present disclosure, the wheel hub according to the fifth aspect is configured such that: the member includes a first abutment that limits movement of the first spacer in a first axial direction, and the hub axle includes a second abutment that limits movement of the second spacer in a second axial direction that is opposite the first axial direction with respect to the cable center axis.

With the hub according to the sixth aspect, it is possible to easily generate a force for deforming the sealing element to seal the space between the cable and the channel.

According to a seventh aspect of the present disclosure, the hub according to the sixth aspect is configured such that: the first spacer abuts the member along the cable central axis and the second spacer abuts the hub axle along the cable central axis.

With the hub according to the seventh aspect, it is possible to further reliably seal the space between the cable and the channel.

According to an eighth aspect of the present disclosure, the hub according to any one of the first to seventh aspects is configured such that: the member defines a channel.

With the hub according to the eighth aspect, it is possible to easily form a passage for the cable.

According to a ninth aspect of the present disclosure, the hub according to the eighth aspect is configured such that: the member includes an end cap disposed on one end of the hub axle and the end cap includes an opening as a passage through which a cable extends.

With the hub according to the ninth aspect it is possible to avoid interference between the cable and other parts of the human powered vehicle.

According to a tenth aspect of the present disclosure, the hub according to any one of the first to seventh aspects is configured such that: the hub axle defines a passageway.

With the hub of the tenth aspect, it is possible to avoid interference between the cable and other parts of the human powered vehicle.

According to an eleventh aspect of the present disclosure, the hub according to the tenth aspect is configured such that: the member includes a bearing spacer that is disposed on the hub axle and supports the hub body via the bearing.

With the hub of the eleventh aspect, it is possible to reliably support the hub body for rotation about the hub shaft.

According to a twelfth aspect of the present disclosure, the hub according to the tenth or eleventh aspect is configured such that: the hub axle has a first axial end, a second axial end, and an axial bore extending between the first and second axial ends, and the passageway communicates with the axial bore at a location between the first and second axial ends.

With the hub according to the twelfth aspect, it is possible to route the cable parallel to the rotation axis and avoid abrupt bending of the cable.

According to a thirteenth aspect of the present disclosure, the hub according to the twelfth aspect is configured such that: the axial bore has a first bore section and a second bore section. The first bore section has a first inner diameter. The second bore section has a second inner diameter. The second inner diameter is smaller than the first inner diameter. The channel is connected to the first bore section.

With the hub according to the thirteenth aspect, it is possible to arrange the cables inside the hub axle to protect the cables.

According to a fourteenth aspect of the present disclosure, the hub according to the twelfth or thirteenth aspect is configured such that: the channel does not extend perpendicular to the axial bore.

With the hub according to the fourteenth aspect, it is possible to avoid abrupt bending of the cable.

According to a fifteenth aspect of the present disclosure, the hub according to any one of the first to fourteenth aspects is configured such that: the sealing element is an elastic ring.

With the hub according to the fifteenth aspect, it is possible to easily mount the seal member.

According to a sixteenth aspect of the present disclosure, the hub according to any one of the first to fifteenth aspects further comprises an electrical component, and the cable is an electrical cable electrically coupled to the electrical component.

With the hub according to the sixteenth aspect it is possible to transfer electrical power to and/or from the hub.

According to a seventeenth aspect of the present disclosure, the hub according to any one of the first to sixteenth aspects further comprises a generator, and the cable is an electrical cable electrically coupled to the generator.

With the hub according to the seventeenth aspect, it is possible to generate electric power by rotation of the hub.

Still other objects, features, aspects and advantages of the disclosed hub will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a preferred embodiment of the hub.

Drawings

Referring now to the attached drawings which form a part of this original disclosure:

FIG. 1 is a side view of a human-powered vehicle (i.e., a bicycle) equipped with a hub (i.e., a bicycle hub) in accordance with a first embodiment;

FIG. 2 is a longitudinal elevational view of a wheel hub attached to the body of the human-powered vehicle shown in FIG. 1;

FIG. 3 is a perspective view of the hub shown in FIG. 1;

FIG. 4 is an end view of the hub shown in FIGS. 2 and 3;

FIG. 5 is a longitudinal cross-sectional view of the hub illustrated in FIGS. 2-4 as seen along section line 5-5 of FIG. 4;

FIG. 6 is a perspective view of the hub illustrated in FIGS. 2-5 with portions of the hub broken away;

FIG. 7 is an enlarged longitudinal cross-sectional view of a portion of the hub illustrated in FIG. 5;

FIG. 8 is a further enlarged longitudinal cross-sectional view of a portion of the hub illustrated in FIG. 7;

FIG. 9 is a partially exploded perspective view of selected portions of the hub illustrated in FIGS. 2-8;

FIG. 10 is a longitudinal cross-sectional view of selected portions of the hub illustrated in FIGS. 2-8;

FIG. 11 is an enlarged longitudinal elevational view of a portion of a cable having a sealing member and a pair of spacers prior to installation of the cable;

FIG. 12 is an enlarged longitudinal elevational view, similar to FIG. 11, of a portion of the cable, but with the sealing element having been deformed by the spacer as a result of the cable being installed within the hub;

FIG. 13 is a longitudinal cross-sectional view of a hub according to a second embodiment;

FIG. 14 is an enlarged, partial cross-sectional view of a portion of the hub illustrated in FIG. 13;

FIG. 15 is an enlarged partial cross-sectional view of a portion of the hub illustrated in FIG. 13 similar to FIG. 14, but with the cables, sealing elements and spacers removed; and

FIG. 16 is a further enlarged, fragmentary, cross-sectional view of a portion of the hub illustrated in FIG. 13.

Detailed Description

Selected embodiments will now be explained with reference to the drawings. It will be apparent to those skilled in the art from this disclosure that the following descriptions of the embodiments are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

Referring first to fig. 1, a wheel hub 10 is provided for a human powered vehicle V. In other words, a human-powered vehicle V (i.e., a bicycle) is illustrated as being equipped with a hub 10 in accordance with the illustrated embodiment. In the illustrated embodiment, the hub 10 is a bicycle hub. More specifically, the hub 10 is a bicycle rear hub. Also here, in the illustrated embodiment, the hub 10 is a hub dynamo for providing electrical power to one or more components of the bicycle V. However, the hub 10 is not limited to a hub dynamo. In particular, certain aspects of the hub 10 may be provided that do not generate electricity. Also, while the hub 10 is illustrated as a rear hub, certain aspects of the hub 10 may be provided with a front hub. Thus, the hub 10 is not limited to a rear hub.

Here, the bicycle V is an electric power assisted bicycle (E-bike). Alternatively, the bicycle V may be a road bike, a city bike, a cargo bike, and a recumbent bike, or other types of off-road bicycles, such as off-road bicycles. As seen in fig. 1, the bicycle V includes a body VB supported by rear wheels RW and front wheels FW. The vehicle body VB basically includes a front frame body FB and a rear frame body RB (swing arm). The vehicle body VB is also provided with a handlebar H and a front fork FF for steering the front wheels FW. The rear frame body RB is swingably mounted to a rear portion of the front frame body FB such that the rear frame body RB can pivot relative to the front frame body FB. The rear wheel RW is mounted to the rear end portion of the rear frame body RB. The rear shock absorber RS is operatively disposed between the front frame body FB and the rear frame body RB. The rear shock absorber RS is disposed 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 RB. That is, the rear shock absorber RS absorbs the shock transmitted from the rear wheels RW. The rear wheels RW are rotatably mounted to the rear frame body RB. The front wheel FW is mounted to the front frame body FB via a front fork FF. That is, the front wheel FW is mounted to a lower end portion of the front fork FF. The height adjustable seatpost ASP is mounted to the seat tube of the front frame body FB in a conventional manner and supports the bicycle seat or saddle S in any suitable manner. The front fork FF is pivotally mounted to the head pipe of the front frame body FB. The handlebar H is mounted to the upper end of the steering column or 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 stroke length of the rear shock absorber RS and the front fork FF can be adjusted.

The bicycle V further includes a drive train DT and an electric drive unit DU operatively coupled to the drive train DT. Here, for example, the drive train DT is of the chain drive type, comprising 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 CA 2. The crank shaft CA1 is rotatably supported to the front frame body FB via the electric drive unit DU. Crank arms CA2 are provided on opposite ends of the crank axle CA 1. The pedal PD is rotatably coupled to a distal end portion of each crank arm CA 2. The drive train DT may be selected from any type of drive train and may be belt-driven or shaft-driven.

The electric drive unit DU has an electric motor that supplies a drive assist force to the front sprockets FS. The electric drive unit DU can be actuated in a conventional manner to assist the propulsion of the bicycle V. For example, the electric drive unit DU is actuated according to a manual driving force applied to the pedal PD. The electric drive unit DU is actuated by electric power supplied from a master battery pack BP mounted on the down tube of the bicycle V. The master battery pack BP may provide electrical power to other vehicle components, such as a rear derailleur RD, a height adjustable seatpost ASP, a rear shock absorber RS, a front fork FF, and any other vehicle component that uses electrical power.

The bicycle V also includes a cycle computer SC. Here, the cycle computer SC is mounted to the front frame body FB. Alternatively, the cycle computer SC may be provided on the handlebar H. The cycle computer SC informs the rider of various driving and/or operating conditions of the bicycle V. The cycle computer SC may also include various control programs for automatically controlling one or more vehicle components. For example, the cycle computer SC can be provided with an automatic shifting program for changing the shifting of the rear derailleur RD based on one or more driving and/or operating conditions of the bicycle V.

Here, the bicycle V further includes a rear derailleur RD attached to the rear frame body RB for shifting the chain CN between the rear sprockets CS. The rear derailleur RD is a shifting device. Here, the rear derailleur RD is an electric derailleur (i.e., an electric shifter or an electric transmission). Here, the rear derailleur RD is disposed on the rear side of the rear frame body RB near the hub 10. When the rider of the bicycle V manually operates the shift operating device or shifter SL, the rear derailleur RD can be operated. The rear derailleur RD can also be automatically operated based on the driving and/or operating conditions of the bicycle V. The bicycle V may also include a plurality of electronic components. During the power generating state as discussed herein, some or all of the electronic components may be supplied with power generated by the hub 10.

The structure of the hub 10 will now be described with particular reference to fig. 2 to 6. The hub 10 includes a hub axle 12. Here, the hub 10 further comprises a hub body 14. The hub axle 12 is configured to be non-rotatably attached to the vehicle body VB. In this embodiment, the hub axle 12 is configured to be non-rotatably attached to the rear frame body RB. The hub axle 12 has a center axis A1. The hub body 14 is rotatably disposed about a central axis a 1. In other words, the hub body 14 is rotatably mounted about the hub axle 12.

As seen in fig. 5, the hub axle 12 is a rigid member made of a suitable material such as a metallic material. Here, the hub axle 12 is a tubular member. The hub axle 12 has a first axial end 12a, a second axial end 12b and an axial bore 12 c. An axial bore 12c extends between the first and second axial ends 12a, 12 b. The hub axle 12 can be a one-piece member or made of several pieces. Here, the hub axle 12 is provided with a first end piece or end cap 16 and a second end piece or end cap 18. The first end cap 16 is mounted to a first axial end 12a (left side in fig. 2-5) of the hub axle 12, and the second end cap 18 is mounted to a second axial end 12b (right side in fig. 2-5) of the hub axle 12. For example, the first end cap 16 is threaded into the first axial end 12a of the hub axle 12 and the second end cap 18 is fastened to the second axial end 12b of the hub axle 12 by the fixing bolt 20 threaded into the axial bore 12c of the hub axle 12. Thus, as seen in fig. 2, the first end cap 16 and the fixing bolt 20 are received in the mounting opening of the rear frame body RB. Here, the second end cap 18 includes a rotation restricting member 18a, which rotation restricting member 18a is also received in one of the mounting openings of the rear frame body RB. The rotation restricting member 18a is engaged with the rear frame body RB such that the rotation of the hub axle 12 relative to the rear frame body RB is restricted.

Here, as seen in fig. 2 and 5, the hub 10 further includes a wheel retaining mechanism 22 for fastening the hub axle 12 of the hub 10 to the rear frame body RB. The wheel holding mechanism 22 basically includes a shaft or skewer 22a, a cam body 22b, a cam lever 22c and an adjustment nut 22 d. The cam rod 22c is attached to one end of the skewer 22a via the cam body 22b, and the adjustment nut 22d is screwed on the other end of the skewer 22 a. The cam rod 22c is attached to the cam body 22 b. The cam bodies 22b are coupled between the skewer 22a and the cam rods 22c to move the skewer 22a relative to the cam bodies 22 b. Thus, the cam rods 22c are operated to move the skewer 22a relative to the cam bodies 22b in the axial direction of the central axis a1 to change the distance between the cam bodies 22b and the adjustment nuts 22 d. Preferably, a compression spring is provided at each end of the skewer 22 a. Alternatively, the hub axle 12 may be non-rotatably attached to the rear frame body RB with other attachment structures as needed and/or desired.

As seen in fig. 1, 3 and 4, the hub body 14 is rotatably mounted about the hub axle 12 for rotation in a drive rotational direction Dl. The driving rotation direction D1 corresponds to the forward driving direction of the rear wheels 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 14 b. The first and second outer flanges 14a, 14b extend radially outward from the outer peripheral surface of the hub body 14 with respect to the central axis a 1. The first and second outer flanges 14a, 14b are configured to receive a plurality of spokes (fig. 1) for attaching a rim (fig. 1) of the rear wheel RW to the hub body 14. In this way, the hub body 14 and the rear wheel RW are coupled for rotation together.

As seen in fig. 5, the hub 10 further includes a first hub body bearing 24. The first hub body bearing 24 rotatably supports the hub body 14. Preferably, the hub 10 also includes a second hub body bearing 26 that rotatably supports an end of the hub body 14. The first hub body bearing 24 rotatably supports the other end of the hub body 14 relative to the central axis a 1. The first hub body bearing 24 includes a first inner race 24a, a first outer race 24b, and a plurality of first roller elements 24 c. The first roller elements 24c are disposed between the first inner race 24a and the first outer race 24 b. The second hub body bearing 26 includes a second inner ring 26a, a second outer ring 26b, and a plurality of second roller elements 26 c. The second roller elements 26c are disposed between the second inner race 26a and the second outer race 26 b. The first and second hub body bearings 24, 26 are radial ball bearings.

Here, the hub 10 further comprises a bearing spacer 28. The bearing spacer 28 is disposed on the hub axle 12 and supports the hub body 14 via bearings. Here, the bearing spacer 28 supports the second hub body bearing 26. The bearing spacer 28 has an inner peripheral end 28a disposed to the hub axle 12 and an outer peripheral end 28b spaced radially outwardly of the inner peripheral end 28 relative to the central axis a 1. The second hub body bearing 26 is disposed at an outer peripheral end 28b of the bearing spacer 28 and rotatably supports the hub body 14. The bearing spacer 28 is non-rotatable relative to the hub axle 12. In particular, the inner peripheral end 28a defines a non-circular opening that mates with the non-circular portion of the hub axle 12 to non-rotatably couple the bearing spacer 28 relative to the hub axle 12. The axial position of the bearing spacer 28 relative to the hub axle 12 can be determined by sandwiching the bearing spacer between a step provided on the hub axle 12 and a nut threaded onto the hub axle 12.

Here, the hub 10 further comprises a sprocket support structure 30. In the illustrated embodiment, the sprocket support structure 30 supports the rear sprocket CS as seen in FIG. 2. The sprocket support structure 30 is rotatably disposed about the central axis a1 to transmit the driving force to the hub body 14 while rotating in the drive rotation direction D1 about the central axis a 1. As explained below, the sprocket support structure 30 does not transmit a driving force to the hub body 14 while rotating in the non-driving rotational direction D2 about the center axis a 1. The non-driving rotational direction D2 is opposite the driving rotational direction D1 relative to the central axis a 1. The rotational center axis of the sprocket support structure 30 is disposed concentrically with the center axis A1 of the hub axle 12.

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

The hub 10 also includes a first sprocket support bearing 32 and a second sprocket support bearing 34. The first sprocket support bearing 32 rotatably supports the first end portion 30a of the sprocket support structure 30. The second sprocket support bearing 34 rotatably supports the second end 30b of the sprocket support structure 30. The outer diameters of the first and second sprocket support bearings 32 and 34 are smaller than the outer peripheral end 28b of the bearing spacer 28. The inner diameter of the first sprocket support bearing 32 is greater than the inner diameter of the second sprocket support bearing 34. Thus, the first and second sprocket support bearings 32 and 34 can be mounted on the hub axle 12 from the second axial end 12b of the hub axle 12. The first sprocket support bearing 32 includes a first inner race 32a, a first outer race 32b, and a plurality of first roller elements 32 c. The first roller elements 32c are disposed between the first inner race 32a and the first outer race 32 b. The second sprocket support bearing 34 includes a second inner race 34a, a second outer race 34b and a plurality of second roller elements 34 c. The second roller elements 34c are disposed between the second inner race 34a and the second outer race 34 b. Here, the first sprocket support bearing 32 and the second sprocket support bearing 34 are radial ball bearings. A tubular spacer element 35 is disposed between the first sprocket support bearing 32 and the second sprocket support bearing 34.

As seen in fig. 5 and 6, the hub 10 also includes electrical components 40. The hub 10 further includes a shell 42 disposed in the hub body 14. The housing 42 is part of the electrical component 40. In other words, the electrical component 40 includes the housing 42.

Moreover, the hub 10 also includes a circuit board 44 disposed in the hub body 14. In particular, the circuit board 44 is disposed in the housing 42. Also, a cover 46 is attached to the housing 42 for enclosing the circuit board 44 within the housing 42. Here, the cover 46 is bonded to the housing 42 by an adhesive or welding. However, the cover 46 may be attached to the housing 42 by threaded fasteners, rivets, or the like. Preferably, the housing 42 and the cover 46 are rigid members made of suitable materials. For example, the housing 42 and the cover 46 are made of a resin material. For example, the housing 42 and the cover 46 may each be injection molded components.

The housing 42 is non-rotatable relative to the hub axle 12. The housing 42 is configured to house the electrical components 40. In the illustrated embodiment, the circuit board 44 is disposed in the housing 42. In particular, the housing 42 has an outer peripheral surface 42a defining an interior space 42b in which the circuit board 44 is disposed. The cover 46 covers the inner space 42b of the housing 42. The inner space 42b has a circular ring shape because the hub axle 12 travels through a central region of the housing 42. Thus, the circuit board 44 is non-rotatable with respect to the hub axle 12. The circuit board 44 is arranged perpendicular to the central axis a 1. The circuit board 44 is part of the electrical component 40. The housing 42 includes an end wall portion 42 c. The end wall portion 42c of the housing 42 includes a plurality of keying tabs 42 d. As discussed below, the keying tab 42d can be configured to engage a non-rotatable member provided to the hub axle 12 for non-rotatably coupling the housing 42 to the hub axle 12.

As seen in fig. 6, the hub 10 also includes a sensed portion 50 and a sensor 52. The detected portion 50 is coupled to the sprocket support structure 30. On the other hand, the sensor 52 is provided in the hub body 14. In particular, the sensor 52 is disposed in the interior space 42b of the housing 42. The sensor 52 is electrically connected to the circuit board 44. The sensor 52 is also part of the electrical component 40. Here, the sensor 52 includes a rotation detection sensor 52 a. The rotation detecting sensor 52a is configured to detect the detected portion 50 to detect rotation of the sprocket support structure 30 about the center axis a 1. Since the rotation detecting sensor 52a is connected to the circuit board 44, the rotation detecting sensor 52a is non-rotatable with respect to the hub axle 12. As seen in fig. 6, the rotation detecting sensor 52a is provided in the hub body 14 at a position spaced radially outward from the hub shaft 12.

In the illustrated embodiment, the rotation detection sensor 52a includes a magnetic sensor, and the detected part 50 includes a magnet. Thus, the magnetic sensor detects the movement of the magnet that rotates with the sprocket support structure 30. In other words, with this arrangement, the rotation detecting sensor 52a is configured to detect the detected portion 50 to detect rotation of the sprocket support structure 30 about the center axis a 1. Here, the magnet of the detected part 50 is a ring-shaped member in which S-pole sections and N-pole sections are alternately arranged. In this way, the rotation detection sensor 52a can detect the amount and direction of rotation of the sprocket support structure 30. However, the detected part 50 is not limited to the illustrated ring-shaped member. For example, the detected portion 50 may be formed of a single non-annular magnet, or two or more magnets circumferentially spaced about the central axis a 1. Where two or more circumferentially spaced magnets are used, a back yoke may be provided and the circumferentially spaced magnets may be provided to the back yoke. In this way, circumferentially spaced magnets can be easily mounted 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 particular event, object, substance, or change in the environment and emit a response signal. The term "sensor" as used herein does not include a human.

The circuit board 44 also includes an electronic controller 44a disposed on the circuit board 44. The electronic controller 44a is configured to receive a detection signal from the rotation detection sensor 52 a. The electronic controller 44a includes at least one processor that executes a predetermined control program. The at least one processor may be, for example, a Central Processing Unit (CPU) or a Micro Processing Unit (MPU). The term "electronic controller" as used herein refers to hardware, excluding humans, that executes software programs. Preferably, the circuit board 44 also includes a data storage device (memory) disposed on the circuit board 44. The data storage device (memory) stores various control programs and information for various control processes including power generation control, power storage control, hub rotation detection control, and the like. Data storage includes any computer storage device or any non-transitory computer readable medium, the only exception being a transitory propagating signal. For example, the data storage device includes a nonvolatile memory and a volatile memory. The non-volatile memory includes, for example, at least one of a Read Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), and a flash memory. Volatile memory includes, for example, Random Access Memory (RAM).

Here, the hub 10 further comprises at least one capacitor 54. Capacitor 54 is the power storage for electrical component 40. In other words, the capacitor 54 is also part of the electrical component 40. The capacitor 54 is preferably disposed in the housing 42 of the hub 10. Thus, the capacitor 54 is part of the electrical component 40. The circuit board 44 is electrically connected to the capacitor 54. In this manner, the capacitor 54 provides power to the circuit board 44 and other electrical components electrically connected to the circuit board 44. For example, the capacitor 54 provides power to the sensor 52. Further, the electronic controller 44a of the circuit board 44 is configured to control input and output of electric power from the capacitor 54.

As seen in fig. 5 and 6, a cover 46 is coupled to the housing 42 to protect the circuit board 44 and the capacitor 54. The cover 46 covers the inner space 42b of the housing 42. Thus, at least the housing 42, the circuit board 44, the capacitor 54 and the cover 46 can be considered to constitute an electrical unit provided in the hub body 14.

As seen in fig. 5 and 6, the hub 10 further includes a one-way clutch 58 formed between the hub body 14 and the sprocket support structure 30. The one-way clutch 58 includes a plurality of pawls 58A disposed between the hub body 14 and the sprocket support structure 30. The one-way clutch 58 also includes a biasing element 58B that couples the pawl 58A to the sprocket support structure 30. The one-way clutch 58 also includes a plurality of ratchet teeth 58C. The ratchet teeth 58C are provided on a fixed ring 58D that is fixed to the hub body 14. Ratchet teeth 58C are provided on the inner peripheral surface of the fixed ring 58D. The fixing ring 58D is screwed to the hub body 14. The fixing ring 58D is made of a hard material such as metal. The retaining ring 58D abuts the outer race 26b of the second hub body bearing 26 in an axial direction relative to the central axis a 1. The opposite side of the outer race 26b of the second hub body bearing 26 in the axial direction abuts a step formed in the hub body 14. The outer race 26b of the second hub body bearing 26 is restrained from axial movement by the retaining ring 58D and the step formed on the hub body 14. The biasing element 58B biases the pawls 58A into engagement with the ratchet teeth 58C of the stationary ring 58D. The biasing elements 58B press the pawls 54 against the sprocket support structure 30 such that the pawls 54 pivot into engagement with the ratchet teeth 58C of the stationary ring 58D. The seal member 58E is provided on the fixing ring 58D. The seal member 58E is formed in an annular shape. The tongue portion of the seal member 58E is in contact with the outer peripheral surface of the sprocket support 30.

As such, the sprocket support structure 30 is coupled to the hub body 14 to rotate together about the central axis a1 in the driving rotation direction D1. Also, with the sprocket support structure 30 rotating in the non-driving rotational direction D2, the ratchet teeth 58C of the sprocket support structure 18 push the pawl 58A and pivot the pawl 58A to the retracted position against the sprocket support structure 30. Thus, the sprocket support structure 30 is configured to rotate relative to the hub body 14 in the non-driving rotational direction D2 about the center axis a 1. Thus, the sprocket support structure 30 and the one-way clutch 58 form a freewheel that is commonly used in bicycles. Since the basic operation of the flywheel is relatively conventional, the flywheel will not be discussed or illustrated in further detail.

As seen in fig. 5, the hub 10 further comprises a generator 60. The generator 60 is provided on the hub body 14, and is configured to generate electric power by rotation of the hub body 14. More specifically, the generator 60 is disposed to the hub body 14 between the hub axle 12 and the center portion of the hub body 14. The generator 60 is configured to generate electrical power through rotation of the hub body 14 relative to the hub axle 12. The electronic controller 44a of the circuit board 44 is electrically connected to the generator 60 for controlling the electrical output of the generator 60. Thus, the electrical power generated by the generator 60 may be stored and/or provided directly to other components, such as the rotation detection sensor 52a, the rear derailleur RD, etc.

The generator 60 basically includes an armature 62 (i.e., a stator in the illustrated embodiment) and a magnet 64 (i.e., a rotor in the illustrated embodiment). Although the armature 62 is illustrated as being fixed relative to the hub axle 12 and the magnet 64 is illustrated as being fixed relative to the hub body 14, the armature 62 may be fixed relative to the hub body 14 and the magnet 64 may be fixed relative to the hub axle 12. The armature 62 includes a winding coil 62A and a bobbin 62B. The armature 62 also includes a first yoke 62C and a second yoke 62D. The winding coil 62A is wound on a bobbin 62B for supporting the winding coil 62A. The first yoke 62C includes two or more first yoke parts arranged in the circumferential direction of the hub axle 12. Likewise, the second yoke 62D includes two or more second yoke parts arranged in the circumferential direction of the hub axle 12 and alternating with the first yoke parts of the first yoke 62C. The winding coil 62A is located between the first yoke 62C and the second yoke 62D in the axial direction of the hub axle 12.

The magnet 64 includes a plurality of first magnet portions 64A and a plurality of second magnet portions 64B disposed inside a tubular support 66. The tubular support 66 is fixedly coupled to the interior of the hub body 14 such that the magnet 64 and the hub body 14 rotate together about the hub axle 12. The tubular support 66 has the function of a back yoke. The back yoke is a member having a high magnetic permeability, which is disposed on the opposite side of the magnetized surface. By using a back yoke, the generated high magnetic field can be obtained. The tubular support 66 may be omitted. Alternatively, the hub body 14 may have the magnets 64 such that the hub body 14 partially forms the generator 60. The first and second magnet portions 64A and 64B are arranged such that the S and N poles of the first and second magnet portions 64A and 64B are alternately arranged in the circumferential direction of the hub axle 12. Thus, in the axial direction of the hub axle 12, the S pole of the first magnet portion 64A is misaligned with the S pole of the second magnet portion 64B, and the N pole of the first magnet portion 64A is misaligned with the N pole of the second magnet portion 64B.

Moreover, the hub 10 further comprises a member 68, a cable 70 and a sealing element 72. The cable 70 extends through the passage 74. The sealing element 72 is configured to occupy the space between the channel 74 and the cable 70. Accordingly, the sealing element 72 is configured to seal the space in the channel 74 between the channel 74 and the cable 70 to prevent contaminants from entering the hub 10. A sealing element 72 is provided on the cable 70 for sealing the interface between the channel 74 and the cable 70.

Preferably, the member 68 is provided to the hub axle 12. In the first embodiment, the member 68 defines a channel 74. In particular, the member 68 includes the end cap 18 disposed on one end of the hub axle 18. The end cap 18 includes an opening 18b that serves as a passage 74 through which the cable 70 extends. However, the member 68 is not limited to the end cap 18. Rather, the member 68 may be any suitable portion of the hub 10 that helps seal the space in the channel 74 between the channel 74 and the cable 70.

Here, the cable 70 is an electric cable. However, it will be apparent from this disclosure that the sealing element 72 may be used with other types of cables other than electrical cables. The cable 70 is electrically coupled to the generator 60. Also, the cable 70 is electrically coupled to the electrical component 40. The cable 70 is electrically connected at one end to the circuit board 44, which circuit board 44 is in turn connected to the generator 60. The other end of cable 70 is electrically connected to another electrical component of human powered vehicle V, such as rear derailleur RD, battery pack BP, or an electrical connector. Thus, the cable 70 can provide the electric power generated by the hub 10 to the rear derailleur RD, the battery pack BP, or other electrical components. The cable 70 may also be used to transmit signals from the electronic controller 44a of the circuit board 44 to the rear derailleur RD or other electrical components using Power Line Communication (PLC).

The cable 70 enters the hub 10 through the opening 18b of the end cap 18. The cable 70 then extends axially along the hub axle 12 and travels through the central opening 28c of the bearing spacer 28. The cable 70 passes through the cover 46 into the housing 42 of the electrical component 40. In the housing 42 of the electrical component 40, the cable 70 is electrically connected to the circuit board 44. Preferably, as in the first embodiment, the cable 70 is disposed in an axially extending recess or groove 12d of the hub axle 12. An axially extending recess or slot 12d extends at least from the second axial end 12b into the interior of the housing 42 of the electrical component 40. Here, the groove 12d extends from the second axial end 12b through the generator 60.

The hub 10 further includes two fixing plates 75 disposed on the hub axle 12 for non-rotatably coupling the generator 60 to the hub axle 12. The fixing plates 75 are provided on opposite axial ends of the generator 60. The fixing plate 75 has a plate shape. Each fixing plate 75 includes a projection 75a that is disposed in a slot 12d of the hub axle 12. By inserting the protrusion 75a into the slot 12d of the hub axle 12, the fixing plate 75 does not rotate relative to the hub axle 12. The generator 60 does not rotate relative to the hub axle 12 by engaging with the protrusions 75b protruding from the axially facing surface of the fixed plate 75. The fixing plates 75 are arranged to sandwich the generator 60 from both sides in the axial direction of the generator 60. Rotation of the fixing plate 75 relative to the hub axle 12 is also inhibited by providing a D-shaped cutout that mates with a corresponding outer surface of the hub axle 12. One of the pair of fixing plates 75 may be omitted.

Also, the housing 42 may be non-rotatably coupled to one of the fixed plates 75 for inhibiting rotation of the housing 42 relative to the hub axle 12. For example, the keying projection 42d of the housing 42 is configured to engage the opening of one of the fixing plates 75 keyed to the slot 12d of the hub axle 12. The fixing plate 76 includes a plurality of openings corresponding to the plurality of projections 42 d. Thus, the housing 42 is prevented from rotating relative to the hub axle 12. Alternatively, the housing 42 may be attached to the bearing spacer 28, with the bearing spacer 28 non-rotatably coupled to the hub axle 12.

In the first embodiment, the sealing element 72 is an elastic ring. In other words, the sealing element 72 is an O-ring or annular ring made of an elastomeric sealing material. For cables with a circular cross-section, an O-ring is suitable as sealing element. For example, in the case of a flat cable, a sealing element with a rectangular or oval opening may be used. Preferably, the elastomeric sealing material of the sealing element 72 is resilient such that the sealing element 72 may be deformed during installation and will substantially return to its original shape when removed from the hub 10. For example, the elastomeric sealing material 72 of the sealing element may be an elastomeric rubber. However, the sealing element 72 is not limited to the disclosed elastomeric ring. In addition to solid substances such as rubber, the sealing element 72 may also be made of a non-elastic moldable sealing material such as putty. Moreover, the sealing element 72 may be formed from multiple parts that may together form a seal.

Preferably, as seen in fig. 7 and 8, the hub 10 further includes a first spacer 76 and a second spacer 78. The first spacer 76 is located on a first axial side of the sealing element 72 with respect to the cable central axis a2 of the cable 70. The second spacer 78 is located on a second axial side of the sealing element 72 with respect to the cable central axis a 2. The second axial side is opposite the first axial side with respect to the cable center axis a 2. The seal 72 abuts the first and second spacers 76, 78. The first side is a side in the first axial direction X1 with respect to the sealing member 72. The second side is a side in the second axial direction X2 with respect to the sealing element 72.

Referring to fig. 8, 11 and 12, the sealing member 72 has an inner peripheral surface 72a and an outer peripheral surface 72 b. The terms "inner" and "outer" used to describe the sealing element 72 refer to a positional relationship with respect to the center of the sealing element 72. Here, in a case where the sealing member 72 is mounted on the cable 70, the center of the sealing member 72 corresponds to the cable center axis a 2. Thus, the term "inner" as used to describe the sealing element 72 refers to a portion or region that is inward of the sealing element 72 or is positioned closer to the cable central axis a2 with the sealing element 72 mounted on the cable 70. On the other hand, the term "outer" as used to describe the sealing element 72 refers to a portion or area that faces away from the outside of the sealing element 72 or away from the cable central axis a2 with the sealing element 72 mounted on the sealing element 72.

Prior to installation of the sealing element 72 into the channel 74, as seen in fig. 11, the inner peripheral surface 72a is equal to or slightly smaller than the outer diameter of the cable 70, while the outer peripheral surface 72b is slightly smaller than the outer diameter of the channel 74. In this way, during assembly of the hub 10, the sealing element 72 is held in place on the cable 70 while there is a small gap between the sealing element 72 and the channel 74 to facilitate insertion of the sealing element 72 into the opening 18 b. With the sealing element 72 installed in the passage 74 and the end cap 18 attached to the hub axle 12 during assembly of the hub 10, the inner peripheral surface 72a of the sealing element 72 is deformed by receiving a force along the cable central axis a2 of the cable 70, and the inner peripheral surface 72a of the sealing element 72 is in contact with the outer surface 70a of the cable 70. The inner peripheral surface 72a contacts the cable 70, while the outer peripheral surface 72b contacts the channel 74. Also, with the seal element 72 installed in the passage 74 and the end cap 18 attached to the hub axle 12 during assembly of the hub 10, the outer peripheral surface 72b of the seal 72 is deformed by receiving a force along the cable central axis a2 of the cable 70, and the outer peripheral surface 72b of the seal element 72 is in contact with the inner surface 74a of the passage 74.

In the first embodiment, the member 68 (i.e., the end cap 18) includes a first abutment 68a for limiting movement of the first spacer 76 in the first axial direction Xl. On the other hand, the hub axle 12 includes a second abutment 68b for limiting movement of the second spacer 78 in a second axial direction X2 that is opposite the first axial direction X1 with respect to the cable center axis a 2. Thus, the first spacer 76 abuts the member 68 (i.e., the end cap 18) along the cable central axis a2, and the second spacer 78 abuts the hub axle 12 along the cable central axis a 2. Thus, during assembly of the hub 10, the first and second spacers 76, 78 move toward the sealing element 72 as the end cap 18 is attached to the hub axle 12 by the fixing bolt 20. As a result, the sealing element 72 is squeezed and deformed to create an inner seal and an outer seal. An inner seal is formed between the inner peripheral surface 72a of the sealing member 72 and the cable 70. An outer seal is formed between the outer peripheral surface 72b of the sealing element 72 and the inner surface 74a of the passage 74.

Referring now to fig. 13-16, a hub 110 is shown according to a second embodiment. Hub 110 is substantially identical to hub 10 discussed above, except that hub axle 12, end cap 18, bearing spacer 28 and tubular spacer element 35 have been replaced with hub axle 112, end cap 118, bearing spacer 128 and tubular spacer element 135. Also, in the second embodiment, the end cap 118 is provided on the hub axle 112 and the fixing bolt 20 has been omitted. Preferably, the end cap 118 includes an O-ring to frictionally inhibit axial movement of the end cap 118 relative to the hub axle 112. The end cap 118 has a non-circular bore (e.g., a D-cut bore) that mates with a corresponding non-circular portion of the hub axle 112 such that the end cap 118 does not rotate relative to the hub axle 112.

In view of the similarity between the first and second embodiments, the parts of the second embodiment that are identical or nearly identical to the parts of the first embodiment will be given the same reference numerals as the parts of the first embodiment. Moreover, the descriptions of the parts of the second embodiment that are identical to the parts of the first embodiment may be omitted for the sake of brevity.

Here, the hub body 14 and the sprocket support structure 30 are rotatably supported on the hub axle 112. The hub axle 112 non-rotatably supports the bearing spacer 128. In the same manner as the bearing spacer 28 of the first embodiment, the bearing spacer 128 is disposed on the hub axle 112 and supports the hub body 14 via the second hub body bearing 26. The hub axle 112 also non-rotatably supports the electrical component 40 and the armature 62 of the generator 60 in the same manner as the hub axle 12 of the first embodiment. Basically, the hub axle 112 has a first axial end 112a, a second axial end 112b and an axial bore 112 c. An axial bore 112c extends between the first and second axial ends 112a, 112b for receiving the skewer 22a of the wheel retention mechanism 22. For example, the hub axle 112 is formed as a one-piece, unitary member.

In the second embodiment, the axial bore 112c has a first bore section 112c1 and a second bore section 112c 2. The first bore section 112c1 has a first inner diameter Y1. The second bore section 12c2 has a second inner diameter Y2. The second inner diameter Y2 is smaller than the first inner diameter Y1. Here, the hub axle 112 defines a passage 174 for receiving the cable 12. In particular, the passage 174 communicates with the axial bore 112c at a location between the first and second axial ends 112a, 112 b. More specifically, the passage 174 is connected to the first bore section 112c 1. Preferably, the channel 174 does not extend perpendicular to the axial bore 112 c.

In the second embodiment, the sealing element 72, the first spacer 76, and the second spacer 78 are disposed in the passage 174. Similar to the first embodiment, the first spacer 76 is located on the sealing element first axial side 72 with respect to the cable central axis a2 of the cable 70. The second spacer 78 is located on a second axial side of the sealing element 72 with respect to the cable central axis a 2. The sealing element 72 abuts against the first spacer 76 and the second spacer 78. Accordingly, with the sealing element 72 installed in the channel 174 during assembly of the hub 110, the inner peripheral surface 72a of the sealing element 72 is deformed by receiving a force along the cable central axis a2 of the cable 70, and the inner peripheral surface 72a of the sealing element 72 is in contact with the outer surface 70a of the cable 70. The inner peripheral surface 72a contacts the cable 70 and the outer peripheral surface 72b contacts the channel 174. Also, with the sealing element 72 installed in the channel 174 during assembly of the hub 110, the outer peripheral surface 72b of the sealing element 72 is deformed by receiving a force along the cable central axis a2 of the cable 70, and the outer peripheral surface 72b of the sealing element 72 is in contact with the inner surface 174a of the channel 174.

In the second embodiment, the hub 110 includes a member 168, wherein the member 168 includes a bearing spacer disposed on the hub axle 112 and supporting the hub body 14 via a bearing. More specifically, in the second embodiment, the member 168 includes the bearing spacer 128 that is disposed on the hub axle 112 and supports the hub body 14 via the second hub body bearing 26. In the second embodiment, the hub axle 112 includes a first abutment 168a for limiting movement of the first spacer 76 in the first axial direction X1. On the other hand, the member 168 (i.e., the bearing spacer 128) includes a second abutment 168b for limiting movement of the second spacer 78 in the second axial direction X2. Thus, the first spacer 76 abuts the hub axle 112 along the cable central axis a2, and the second spacer 78 abuts the member 168 (i.e., the bearing spacer 128) along the cable central axis a 2.

As such, during assembly of hub 110, first spacer 76 and second spacer 78 move toward sealing element 72. As a result, the sealing element 72 is squeezed and deformed to create an inner seal and an outer seal. An inner seal is formed between the inner peripheral surface 72a of the sealing member 72 and the cable 70. An outer seal is formed between the outer peripheral surface 72b of the sealing element 72 and the inner surface 174a of the passage 174.

In understanding the scope of the present invention, the term "comprising" and its derivatives, as used herein, are intended to be open ended terms that specify the presence of the stated features, elements, components, groups, integers, and/or steps, but do not exclude the presence of other unstated features, elements, components, groups, integers and/or steps. The foregoing also applies to words having similar meanings such as the terms, "including", "having" and their derivatives. Also, unless otherwise specified, the terms "part," "section," "portion," "member" or "element" when used in the singular can also have the dual meaning of a single part or a plurality of parts.

As used herein, the following directional terms "frame-facing side", "non-frame-facing side", "forward", "rearward", "front", "rear", "upper", "lower", "above", "below", "upward", "downward", "top", "bottom", "side", "vertical", "horizontal", "vertical" and "transverse" as well as any other similar directional terms refer to those directions of a human-powered vehicle (e.g., a bicycle) in an upright riding position and equipped with a hub. Accordingly, these directional terms, as utilized to describe the wheel hub should be interpreted relative to a human-powered vehicle (e.g., a bicycle) equipped with the wheel hub in an upright riding position on a horizontal surface. The terms "left" and "right" are used to refer to "right" when viewed from the right when viewed from behind a human powered vehicle (e.g., a bicycle), and "left" when viewed from the left when viewed from behind a human powered vehicle (e.g., a bicycle).

The phrase "at least one" as used in this disclosure refers to "one or more" of the desired selections. For one example, the phrase "at least one" as used in this disclosure means "only one single selection" or "both of the two selections" if the number of selections is two. For another example, the phrase "at least one" as used in this disclosure means "only one single choice" or "any combination of two choices or more" if the number of its choices is equal to or greater than three. Also, the term "and/or" as used in this disclosure means "either or both".

Also, it should be understood that although the terms "first" and "second" may be used herein to describe various components, these components should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, for example, a first element discussed above could be termed a second element, and vice-versa, without departing from the teachings of the present invention.

As used herein, the term "attached" or "attaching" encompasses the following configurations: a configuration in which an element is directly fastened to another element by directly attaching the element to the other element; a configuration for indirectly securing an element to one or more intermediate elements by attaching the element to the other element and in turn attaching the one or more intermediate elements to the other element; and constructions in which one element is integral with another, i.e. one element is essentially a part of another. This definition also applies to words having similar meanings such as "coupled," "connected," "coupled," "mounted," "coupled," "secured," and derivatives thereof. Finally, terms of degree such as "substantially", "about" and "approximately" as used herein mean an amount of deviation of the modified term such that the end result is not significantly changed.

While only selected embodiments have been chosen to illustrate the present invention, 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 invention as defined in the appended claims. For example, unless specifically stated otherwise, the size, shape, location or orientation of the various components may be changed as needed and/or desired, so long as the changes do not substantially affect their intended function. Unless otherwise specifically stated, components shown as being directly connected or contacting each other may have intermediate structures disposed between them so long as the changes do not substantially affect their intended function. Unless specifically stated otherwise, the functions of one element may be performed by two, and vice versa. The structure and function of one embodiment may be employed in another embodiment. Not all advantages may be required to be present in a particular embodiment at the same time. Each feature which is unique from the prior art, alone or in combination with other features, also should be considered a separate description of further inventions by the applicant, including the structural and/or functional concepts embodied by one or more of such features. Accordingly, the foregoing descriptions of the embodiments according to the present invention are provided for illustration only, and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

Claims (17)

1. A hub for a human-powered vehicle, the hub comprising:

a hub shaft;

a member provided to the hub axle;

a cable extending through the channel; and

a sealing element configured to occupy a space between the channel and the cable.

2. The hub of claim 1, wherein

The sealing element has an inner circumferential surface contacting the cable and an outer circumferential surface contacting the channel.

3. The hub of claim 2, wherein

The inner peripheral surface of the sealing member is deformed by receiving a force along a cable central axis of the cable, and the inner peripheral surface of the sealing member is in contact with an outer surface of the cable.

4. The hub of claim 2, wherein

The outer peripheral surface of the sealing element is deformed by receiving a force along a cable central axis of the cable, and the outer peripheral surface of the sealing element is in contact with an inner surface of the passage.

5. The hub of claim 2, further comprising:

a first spacer located on a first axial side of the sealing element with respect to a cable central axis of the cable; and

a second spacer located on a second axial side of the sealing element with respect to the cable center axis, the second axial side being opposite the first axial side with respect to the cable center axis, wherein

The sealing element abuts against the first spacer and the second spacer.

6. A hub according to claim 5, wherein

The member includes a first abutment that limits movement of the first spacer in a first axial direction, and

the hub axle includes a second abutment that limits movement of the second spacer in a second axial direction that is opposite the first axial direction with respect to the cable center axis.

7. A hub according to claim 6, wherein

The first spacer abuts the member along the cable central axis, and

the second spacer abuts the hub axle along the cable center axis.

8. A hub according to claim 1, wherein

The member defines the channel.

9. The hub of claim 8, wherein

The member includes an end cap disposed on one end of the hub axle, and

the end cap includes an opening as the passage through which the cable extends.

10. The hub of claim 1, wherein

The hub axle defines the passageway.

11. The hub of claim 10, wherein

The member includes a bearing spacer that is disposed on the hub axle and supports a hub body via a bearing.

12. A hub according to claim 10, wherein

The hub axle has a first axial end, a second axial end, and an axial bore extending between the first and second axial ends, and the passageway communicates with the axial bore at a location between the first and second axial ends.

13. The hub of claim 12, wherein

The axial bore has a first bore section and a second bore section,

the first bore section has a first inner diameter,

the second bore section having a second inner diameter,

the second inner diameter is smaller than the first inner diameter, and

the channel is connected to the first bore section.

14. The hub of claim 12, wherein

The channel does not extend perpendicular to the axial bore.

15. The hub of claim 1, wherein

The sealing element is an elastomeric ring.

16. The hub of claim 1, further comprising:

an electrical component, and

the cable is an electrical cable electrically coupled to the electrical component.

17. The hub of claim 1, further comprising:

a generator, and

the cable is an electrical cable electrically coupled to the generator.

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