Hub for human-powered vehicles

Abstract

To provide a hub for human power driving vehicles including a braking force adjustment mechanism making it possible to diminish the number of components.SOLUTION: A hub for human power driving vehicles includes a hub shell including a hub shaft, a first flange rotatively attached to the hub shaft, and a second flange separated from the first flange in an axial direction of the hub shaft, a first arrangement surface included in the hub shaft or hub shell and provided with a magnet or a magnet attachment part, a braking force adjustment mechanism at least part of which is included in the hub shell so that the braking force adjustment mechanism can adjust a braking force exerted by a braking device, a first area including the first flange and first arrangement surface, and a second area including the second flange and braking force adjustment mechanism. The hub shell includes a first part included by the first area, and a second part included by the second area. The first part is integrated into the second part.SELECTED DRAWING: Figure 2

Description

Technical Field

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

Background Art

[0002] For example, Patent Document 1 discloses an example of a hub for a human-powered vehicle. The hub disclosed in Patent Document 1 includes a braking force adjustment mechanism.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The hub shell of the hub disclosed in Patent Document 1 includes a first region and a second region formed separately from the first region. In the hub disclosed in Patent Document 1, a magnet is provided in the first region, and a braking force adjustment mechanism is provided in the second region.

[0005] One object of the present disclosure is to provide a hub for a human-powered vehicle provided with a braking force adjustment mechanism capable of reducing the number of parts.

Means for Solving the Problems

[0006] A hub according to a first aspect of the present disclosure is a hub for a human-powered vehicle, comprising: a hub shaft; a hub shell rotatably mounted on the hub shaft and including a first flange and a second flange spaced axially away from the first flange on the hub shaft; a first mounting surface provided on the hub shaft or the hub shell and on which a magnet or magnet mounting portion is provided; a brake force adjustment mechanism provided in part on the hub shell to adjust the brake force of a brake device; a first region on which the first flange and the first mounting surface are provided; and a second region on which the second flange and the brake force adjustment mechanism are provided, wherein the hub shell includes a first portion included in the first region and a second portion included in the second region, the first portion being integrally formed with the second portion. According to the first side view of the hub, in a hub equipped with a brake force adjustment mechanism, the first portion included in the first region of the hub shell and the second portion included in the second region of the hub shell are integrally formed, thereby reducing the number of parts.

[0007] In a hub of a second aspect according to the first aspect of this disclosure, the first mounting surface is provided on the hub shell, and the magnet or the magnet mounting portion faces the hub shaft when provided on the first mounting surface. According to the second side of the hub, a magnet or magnet mounting portion can be provided on the hub shell so as to face the hub shaft.

[0008] A hub of a third aspect according to the second aspect of this disclosure includes a second mounting surface on which a power generation mechanism provided on the hub shaft and detachably mounted between the hub shell and the hub shaft is provided, wherein the magnet or the magnet mounting portion faces the second mounting surface when provided on the first mounting surface. With the third side hub, a magnet or magnet mounting portion can be provided on the hub shell, and a power generation mechanism can be provided on the hub shaft. Therefore, when the power generation mechanism is provided on the second mounting surface, the magnet and the power generation mechanism can be positioned in a suitable positional relationship between the hub shell and the hub shaft.

[0009] A hub of a fourth aspect according to the first aspect of this disclosure further comprises a power generation mechanism provided between the hub shell and the hub shaft, the power generation mechanism being detachably mounted on the hub shaft. According to the hub on the fourth side, the power generation mechanism is detachably mounted between the hub shell and the hub shaft, so that when the power generation mechanism is not needed, the hub can be used with the power generation mechanism removed.

[0010] In a hub of a fifth aspect according to the fourth aspect of this disclosure, the power generation mechanism includes a mounting portion that is detachably attached to the hub shaft. According to the hub on the fifth side, the power generation mechanism can be suitably attached to and detached from the hub shaft by the mounting portion.

[0011] In a hub of a sixth aspect according to a fourth or fifth aspect of the present disclosure, the power generation mechanism includes a stator and a yoke provided on the hub shaft, wherein the stator and the yoke are provided so as to overlap the first arrangement plane in the radial direction of the hub shaft. According to the hub on the sixth side, power can be suitably generated by a power generation mechanism including a stator and a yoke.

[0012] Sections 4 to 6 of this disclosure side In a seventh side hub conforming to any one of the above, the power generation mechanism is provided in the first region. The seventh side hub allows the power generation mechanism to be suitably mounted on the hub.

[0013] In a hub of an eighth side according to any one of the first to seventh sides of this disclosure, the minimum inner diameter of the hub shell in the first region is less than or equal to the maximum inner diameter of the hub shell in the second region. The hub on the eighth side allows for a reduction in the minimum inner diameter of the hub shell in the first region.

[0014] In a hub of the ninth side according to the eighth side of this disclosure, the minimum inner diameter of the hub shell in the first region is substantially equal to the maximum inner diameter of the hub shell in the second region. According to the hub on the ninth side, the inner surface of the hub shell can be made into a simple shape.

[0015] In a hub of a tenth side according to any one of the first to ninth sides of this disclosure, the minimum outer diameter of the hub shell in the first region is substantially equal to the minimum outer diameter of the hub shell in the second region. According to the hub on the 10th side, the outer surface of the hub shell can be made into a simple shape.

[0016] In a hub of an eleventh aspect according to any one of the first to tenth aspects of this disclosure, the brake force adjustment mechanism is provided on the hub shell, and the hub shell is provided on the hub shaft so as to be detachable from the hub shaft when the brake force adjustment mechanism is provided on the hub shell. According to the 11th side hub, the hub shell can be removed from the hub axle when the brake force adjustment mechanism is installed on the hub shell, thus simplifying the process of removing the brake force adjustment mechanism and the hub shell from the hub axle.

[0017] In a hub of a twelfth aspect according to any one of the first to eleventh aspects of this disclosure, the brake force adjustment mechanism adjusts the brake force so that the brake force becomes less than or equal to the predetermined brake force when the brake force is greater than a predetermined brake force. The hub on the 12th side allows the braking force to be adjusted so that it is below a predetermined braking force, thus enabling effective braking.

[0018] In a hub of a 13th aspect according to the 12th aspect of the present disclosure, the brake force adjustment mechanism includes a first member configured to be connectable to the brake device and rotating with respect to the hub axis, and a second member provided on the second portion and engaging with the first member, wherein the second member is configured to rotate with respect to the first member when the brake force is greater than a predetermined brake force. With the hub on the 13th side, the second member rotates relative to the first member, thereby suitably reducing the braking force to below a predetermined braking force.

[0019] In the hub of the 14th aspect according to the 13th aspect of the present disclosure, the second member is in frictional engagement with the first member. According to the hub of the 14th aspect, braking can be suitably achieved by the second member being in frictional engagement with the first member.

[0020] In the hub of the 15th aspect according to any one of the 1st to 14th aspects of the present disclosure, including the central axis of the hub shaft, and in a cross-section parallel to the axial direction, the first arrangement surface includes a straight-line portion parallel to the axial direction. According to the hub of the 15th aspect, a magnet or a magnet mounting portion can be suitably arranged on the first arrangement surface.

[0021] In the hub of the 16th aspect according to any one of the 1st to 15th aspects of the present disclosure, in the axial direction, the length of the first arrangement surface is 30 mm or more and 40 mm or less. According to the hub of the 16th aspect, a magnet or a magnet mounting portion can be arranged on the first arrangement surface having an axial length of 30 mm or more and 40 mm or less.

[0022] In the hub of the 17th aspect according to the 3rd aspect of the present disclosure, in the axial direction, the length of the second arrangement surface is 28 mm or more and 38 mm or less. According to the hub of the 17th aspect, a power generation mechanism can be arranged on the second arrangement surface having an axial length of 28 mm or more and 38 mm or less.

[0023] In the hub of the 18th aspect according to the 3rd or 17th aspect of the present disclosure, in the direction perpendicular to the axial direction, the distance from the first arrangement surface to the second arrangement surface is 15 mm or more and 25 mm or less. According to the hub of the 18th aspect, a power generation mechanism can be arranged in a portion where the distance in the direction perpendicular to the axial direction is 15 mm or more and 25 mm or less.

[0024] In the hub of the 19th aspect according to any one of the 1st to 18th aspects of the present disclosure, in the axial direction, the length of the first region is greater than the length of the second region. According to the hub on the 19th side, the first mounting surface can be made larger than the brake force adjustment mechanism in the axial direction.

[0025] In a hub of a 20th side according to any one of the first to 19th sides of this disclosure, the length of the first region in the axial direction is 40 mm or more and 50 mm or less. According to the hub on the 20th side, the first placement surface can be positioned in a portion of the axial direction that is 40 mm or more and 50 mm or less.

[0026] In a hub of a 21st side according to any one of the first to 20th sides of this disclosure, the length of the second region in the axial direction is 15 mm or more and 25 mm or less. According to the hub on the 21st side, a brake force adjustment mechanism can be positioned in the axial direction in a portion of 15 mm or more and 25 mm or less.

[0027] In a hub of a 22nd side according to any one of the first to 21st sides of this disclosure, the first region is adjacent to the second region in the axial direction. The hub on the 22nd side allows for easy formation of the first and second parts. [Effects of the Invention]

[0028] The hub for human-powered vehicles described herein can reduce the number of parts. [Brief explanation of the drawing]

[0029] [Figure 1] This is a front view of a hub for a human-powered vehicle, which is equipped with a power generation mechanism, according to the first embodiment of the hub for a human-powered vehicle. [Figure 2] Figure 1 is a cross-sectional view of a hub for a human-powered vehicle. [Figure 3] Figure 2 shows a cross-sectional view of a hub for a human-powered vehicle, specifically a hub without a power generation mechanism. [Figure 4] Figure 2 is a cross-sectional view showing the first state in the process of removing the power generation mechanism from the hub for a human-powered vehicle. [Figure 5]Figure 2 is a cross-sectional view showing the second state in the process of removing the power generation mechanism from the hub for a human-powered vehicle. [Figure 6] Figure 2 is a cross-sectional view showing the third state in the process of removing the power generation mechanism from the hub for a human-powered vehicle. [Figure 7] Figure 2 is a cross-sectional view showing the fourth state in the process of removing the power generation mechanism from the hub for a human-powered vehicle. [Figure 8] Figure 2 is a cross-sectional view showing the fifth state in the process of removing the power generation mechanism from the hub for a human-powered vehicle. [Figure 9] Figure 2 is a cross-sectional view showing the sixth state in the process of removing the power generation mechanism from the hub for a human-powered vehicle. [Figure 10] Figure 2 is a cross-sectional view showing the seventh state in the process of removing the power generation mechanism in a hub for a human-powered vehicle. [Figure 11] Figure 2 is a cross-sectional view showing the eighth state in the process of removing the power generation mechanism in a hub for a human-powered vehicle. [Figure 12] Figure 2 is a cross-sectional view showing the ninth state in the process of removing the power generation mechanism from the hub for a human-powered vehicle. [Figure 13] Figure 2 is a cross-sectional view showing the 10th state in the process of removing the power generation mechanism from the hub for a human-powered vehicle. [Figure 14] This is a cross-sectional view of a hub for a human-powered vehicle according to a second embodiment. [Figure 15] This is a cross-sectional view of a hub for a human-powered vehicle according to a third embodiment. [Figure 16] This is a cross-sectional view of a hub for a human-powered vehicle according to the fourth embodiment. [Modes for carrying out the invention]

[0030] <First Embodiment> A hub 10 for a human-powered vehicle of a first embodiment will be described with reference to Figures 1 to 13. A human-powered vehicle is a vehicle having at least one wheel and that can be driven by at least human power. Human-powered vehicles include various types of bicycles, such as mountain bikes, road bikes, city bikes, cargo bikes, handbikes, and recumbent bikes. The number of wheels a human-powered vehicle may have is not limited. Human-powered vehicles also include, for example, unicycles and vehicles with two or more wheels. Human-powered vehicles are not limited to vehicles that can be driven solely by human power. Human-powered vehicles include e-bikes that utilize the driving force of an electric motor in addition to human power for propulsion. E-bikes include electric assist bicycles in which propulsion is assisted by an electric motor. Hereinafter, in embodiments, a human-powered vehicle will be described as a bicycle.

[0031] As shown in Figures 1 and 2, the hub 10 comprises a hub shaft 12, a hub shell 14, a first mounting surface 16, a brake force adjustment mechanism 18, a first region 30, and a second region 32. The hub shell 14 is rotatably mounted relative to the hub shaft 12. For example, the hub shaft 12 is formed in a cylindrical shape. For example, the hub shaft 12 is formed in a cylindrical shape. For example, the hub shell 14 is formed in a cylindrical shape. For example, the hub shaft 12 is mounted on the frame 90 of a human-powered vehicle in a non-rotatable manner. For example, part of a mounting member for attaching the hub shaft 12 to the frame 90 is provided in the internal space of the hub shaft 12. The hub shell 14 is mounted on the hub shaft 12 so as to be rotatable relative to the frame 90. The hub shell 14 is mounted on the hub shaft 12 so as to be rotatable relative to the hub shaft 12 about the central axis C1 of the hub shaft 12.

[0032] For example, the hub shaft 12 includes an outer surface 12A. For example, the hub shell 14 includes an inner surface 14A. In the radial direction of the hub shaft 12, an internal space SA is formed between the outer surface 12A of the hub shaft 12 and the inner surface 14A of the hub shell 14.

[0033] The first mounting surface 16 is provided on the hub shaft 12 or the hub shell 14, and a magnet 24 or a magnet mounting portion is provided on it. For example, the first mounting surface 16 is provided on the hub shell 14. In this embodiment, the first mounting surface 16 is provided on the inner surface 14A. For example, as shown in Figure 2, in a cross section that includes the central axis C1 of the hub shaft 12 and is parallel to the axial direction, the first mounting surface 16 includes a straight portion 16A parallel to the axial direction. For example, in the axial direction, the length L1 of the first mounting surface 16 is 30 mm or more and 40 mm or less. For example, the length L1 coincides with the length of the straight portion 16A in the axial direction.

[0034] For example, the hub 10 further comprises a magnet 24. In this embodiment, the magnet 24 is provided on a first mounting surface 16. For example, the magnet 24 is provided on the first mounting surface 16 via an adhesive 26. The magnet 24 may also be provided on the first mounting surface 16 by engaging with the first mounting surface 16 by spline engagement or the like. For example, the magnet 24 is formed in a cylindrical shape, a first spline is formed on the first mounting surface 16, and a second spline that engages with the first spline is formed on the outer surface of the magnet 24. The axial length of the magnet 24 substantially coincides with the length L1 of the first mounting surface 16. The axial length of the magnet 24 may be shorter than the length L1 of the first mounting surface 16. As shown in Figure 3, the magnet 24 may include a plurality of magnets 24. The plurality of magnets 24 are provided on the inner surface 14A of the hub shell 14 such that a plurality of poles are aligned in the circumferential direction. The magnet 24 includes permanent magnets. The magnet 24 may be a magnetized magnet 24 attached to the inner surface 14A. The hub 10 may be provided with a magnet mounting portion to which the magnet 24 can be attached. The magnet 24 may be detachably attached to the magnet mounting portion. The magnet mounting portion may include, for example, a female threaded portion. If the magnet mounting portion includes a female threaded portion, the magnet 24 is attached to the inner surface 14A by a bolt and the female threaded portion. The magnet 24 may be attached to the first mounting surface 16 by welding instead of adhesive 26.

[0035] For example, the hub 10 includes a second mounting surface 20. For example, the second mounting surface 20 is provided on the hub shaft 12 or the hub shell 14. For example, the second mounting surface 20 is provided on the hub shaft 12. In this embodiment, the second mounting surface 20 is provided on the outer surface 12A. For example, a power generation mechanism 22 that can be positioned between the hub shell 14 and the hub shaft 12 is detachably provided on the second mounting surface 20. In the axial direction, the length L2 of the second mounting surface 20 is 28 mm or more and 38 mm or less. For example, in the axial direction of the hub shaft 12, the length L1 of the first mounting surface 16 may be longer or shorter than the length L2 of the second mounting surface 20. For example, in the axial direction of the hub shaft 12, the length L1 of the first mounting surface 16 is substantially equal to the length L2 of the second mounting surface 20.

[0036] The hub shell 14 includes a first flange 28A and a second flange 28B. The second flange 28B is positioned axially away from the first flange 28A in the direction of the hub shaft 12. The spokes of the wheel are provided on the first flange 28A and the second flange 28B. The wheel is the front or rear wheel of a human-powered vehicle. The hub shell 14 is configured to rotate integrally with the wheel.

[0037] The first region 30 and the second region 32 are distinct regions in the axial direction of the hub axis 12. The first region 30 is adjacent to the second region 32 in the axial direction. The first region 30 and the second region 32 do not overlap. In the axial direction, the length L3 of the first region 30 is greater than the length L4 of the second region 32. In the axial direction, the length L3 of the first region 30 is 40 mm or more and 50 mm or less. 。 In the axial direction, the length L4 of the second region 32 is 15 mm or more and 25 mm or less.

[0038] The first region 30 is provided with a first flange 28A and a first mounting surface 16. The first flange 28A extends radially outward from the outer surface of the hub shell 14 in the first region 30. The first mounting surface 16 is provided on the inner surface 14A of the hub shell 14 in the first region 30. The second region 32 is provided with a second flange 28B and a brake force adjustment mechanism 18. The second flange 28B extends radially outward from the outer surface of the hub shell 14 in the second region 32. The brake force adjustment mechanism 18 is provided on the inner surface 14A of the hub shell 14 in the second region 32.

[0039] For example, the first region 30 is the region of the hub shell 14 from the first end to a predetermined portion in the axial direction of the hub shaft 12. For example, the second region 32 is the region of the hub shell 14 from the second end to a predetermined portion in the axial direction of the hub shaft 12. The predetermined portion corresponds, for example, to the portion between the brake force adjustment mechanism 18 and the first mounting surface 16 in the axial direction of the hub shaft 12. The predetermined portion may correspond to the end of the brake force adjustment mechanism 18 on the first mounting surface 16 side in the axial direction of the hub shaft 12, or it may correspond to the end of the first mounting surface 16 side on the brake force adjustment mechanism 18 side in the axial direction of the hub shaft 12.

[0040] The hub shell 14 includes a first part 30A and a second part 32A. The first part 30A is contained within a first region 30. The second part 32A is contained within a second region 32. The first part 30A is formed integrally with the second part 32A. For example, the first part 30A and the second part 32A are formed inseparably by casting, adhesive bonding, or welding. The first part 30A and the second part 32A may be formed from a single material or from different materials.

[0041] The hub 10 may be provided with a cover 56 that closes the opening at the end of the hub shell 14 on the side of the first region 30 of the hub shaft 12. The cover 56 is detachably provided on the inner surface 14A of the first portion 30A. The cover 56 extends radially inward from the inner surface 14A of the first portion 30A toward the hub shaft 12 so as to define the internal space SA of the hub shell 14. The cover 56 is configured to rotate integrally with the hub shell 14. The hub 10 may be provided with a cap portion that closes the opening at the end of the hub shell 14 on the side of the second region 32. The cap portion is formed integrally with, for example, the brake force adjustment mechanism 18.

[0042] The hub axle 12 includes a third portion 34 and a fourth portion 36. The third portion 34 is the portion of the hub axle 12 that is included in the first region 30. The fourth portion 36 is the portion of the hub axle 12 that is included in the second region 32. The third portion 34 is provided with a second mounting surface 20. For example, the maximum outer diameter D1 of the fourth portion 36 is greater than or equal to the maximum outer diameter D2 of the third portion 34. For example, the maximum outer diameter D1 of the fourth portion 36 is greater than the maximum outer diameter D2 of the third portion 34.

[0043] The brake force adjustment mechanism 18 is provided in the hub shell 14 in part to adjust the brake force from the brake device 92. For example, the brake device 92 includes a disc brake device. The brake force adjustment mechanism 18 is configured to adjust the brake force input by the brake device 92 and transmit the adjusted brake force to the hub shell 14. For example, if the brake force is greater than a predetermined brake force, the brake force adjustment mechanism 18 adjusts the brake force so that the brake force becomes less than or equal to the predetermined brake force.

[0044] For example, the brake force adjustment mechanism 18 is provided on the hub shell 14. The hub shell 14 is provided on the hub shaft 12 so as to be detachable from the hub shaft 12 when the brake force adjustment mechanism 18 is attached to the hub shell 14. For example, the brake force adjustment mechanism 18 is provided on the hub shell 14 so as not to be detachable.

[0045] For example, the brake force adjustment mechanism 18 includes a first member 38 and a second member 40. The first member 38 and the second member 40 are formed in a disc shape and configured so that the hub shaft 12 passes through them. For example, the brake force adjustment mechanism 18 includes a plurality of first members 38 and a plurality of second members 40. For example, the brake force adjustment mechanism 18 includes two first members 38 and two second members 40. The plurality of first members 38 and the plurality of second members 40 are arranged alternately in the axial direction.

[0046] For example, the brake force adjustment mechanism 18 includes a first support member 42 and a second support member 44. The first support member 42 and the second support member 44 are configured to be rotatable with respect to the hub shaft 12 about a central axis C1. The first support member 42 has a first support surface 42A that is configured to be connectable to a brake device 92. For example, the rotating body 94 of the brake device 92 is connected to the first support surface 42A. For example, the first support surface 42A has a spline portion to which the rotating body 94 of the brake device 92 is connected. The second support member 44 is connected to the first support member 42 so as to rotate integrally with the first support member 42. For example, the second support member 44 includes a second support surface 44A that contacts the second member 40.

[0047] For example, the first member 38 is configured to be connectable to the brake device 92 and rotates relative to the hub shaft 12. The first member 38 is connected to the rotating body 94 of the brake device 92 via the first support member 42 and the second support member 44. For example, the brake device 92 includes a disc brake, and the rotating body 94 includes a disc brake rotor. The brake device 92 may be a roller brake or a rim brake. The first member 38 is provided on the second support member 44 so as to rotate integrally with the second support member 44 by spline fitting with the outer surface of the second support member 44.

[0048] For example, the second member 40 is provided on the hub shell 14 and engages with the first member 38. The second member 40 is provided on the hub shell 14 so as to rotate integrally with the hub shell 14 by spline fitting with the inner surface 14A of the second portion 32A. For example, the second member 40 frictionally engages with the first member 38. By frictionally engaging with the first member 38, the second member 40 rotates integrally with the first member 38 when the braking force input by the brake device 92 is less than or equal to a predetermined braking force. The predetermined braking force is set by the frictional force between the first member 38 and the second member 40.

[0049] For example, the second member 40 is configured to rotate relative to the first member 38 when the braking force is greater than a predetermined braking force. When the braking force is greater than a predetermined braking force, the rotational force of the first member 38 relative to the second member 40 becomes greater than the frictional force between the first member 38 and the second member 40. When the rotational force of the first member 38 relative to the second member 40 is greater than the frictional force between the first member 38 and the second member 40, the second member 40 rotates relative to the first member 38, so that the braking force is adjusted to be less than or equal to the predetermined braking force.

[0050] For example, the brake force adjustment mechanism 18 includes a biasing member 46. The biasing member 46 is formed in a disc shape and is provided so that the hub shaft 12 passes through it. For example, the biasing member 46 includes a disc spring. Multiple first members 38 and multiple second members 40 are sandwiched between the biasing member 46 and the second support surface 44A in the axial direction. By biasing the multiple first members 38 and multiple second members 40, which are alternately provided in the axial direction, in the axial direction of the hub shaft 12, the second members 40 frictionally engage with the first members 38.

[0051] For example, the brake force adjustment mechanism 18 includes a biasing force adjustment mechanism 48. The biasing force adjustment mechanism 48 is formed in a disc shape and is provided so that the hub shaft 12 passes through it. For example, the biasing force adjustment mechanism 48 includes a female threaded portion 48A that is screwed into the male threaded portion 44B of the second support member 44. The biasing force adjustment mechanism 48 is configured to adjust the biasing force of the biasing member 46 by the amount that the female threaded portion 48A is screwed into the male threaded portion 44B. The greater the amount that the female threaded portion 48A is screwed into the male threaded portion 44B, the greater the biasing force of the biasing member 46. The greater the biasing force of the biasing member 46, the greater the frictional force between the first member 38 and the second member 40.

[0052] For example, the hub 10 further comprises a power generation mechanism 22 provided between the hub shell 14 and the hub shaft 12. For example, the power generation mechanism 22 is detachably mounted on the hub shaft 12. For example, the power generation mechanism 22 includes a mounting portion 22A that is detachably attached to the hub shaft 12. For example, a spline is formed on the second mounting surface 20. The mounting portion 22A is attached to the second mounting surface 20 by spline fitting. The attachment of the mounting portion 22A to the second mounting surface 20 restricts the rotation of the power generation mechanism 22 about its central axis C1 relative to the hub shaft 12.

[0053] For example, the power generation mechanism 22 includes a dynamo. For example, the power generation mechanism 22 includes a stator 50 and a yoke 52 provided on the hub shaft 12. For example, the power generation mechanism 22 is a claw-pole type generator. The stator 50 and yoke 52 are provided on the outer surface 12A of the hub shaft 12 so as not to rotate relative to the hub shaft 12. For example, the stator 50 and yoke 52 are provided so as to overlap the first mounting surface 16 in the radial direction of the hub shaft 12. The stator 50 and yoke 52 are provided on the outer surface 12A of the third portion 34 so as to rotate relative to the magnet 24 provided on the first mounting surface 16. The power generation mechanism 22 generates electricity by the rotation of the stator 50 and yoke 52 relative to the magnet 24.

[0054] The stator 50 includes a coil 50A and a bobbin 50B. The coil 50A is wound around the bobbin 50B. The yoke 52 includes a plurality of first yokes 52A and a plurality of second yokes 52B. The first yoke 52A is composed of a plurality of first yoke pieces. The second yoke 52B is composed of a plurality of second yoke pieces. The plurality of first yokes 52A and the plurality of second yokes 52B are arranged alternately on the outer surface 12A of the third portion 34 in the circumferential direction by being fitted into recesses provided in the bobbin 50B.

[0055] For example, the power generation mechanism 22 further comprises an electrical component 54. The electrical component 54 is electrically connected to the stator 50 and the yoke 52. The electrical component 54 is configured to be electrically connectable to an electrical component different from the hub 10 of the human-powered vehicle. The electrical component 54 electrically connects the stator 50 and the yoke 52 to a component different from the hub 10 of the human-powered vehicle.

[0056] For example, the hub 10 further comprises a first bearing 58 and a second bearing 60. The first bearing 58 is provided between the cover 56 and the hub shaft 12 so that the hub shell 14 is rotatable relative to the hub shaft 12. For example, the first bearing 58 includes a first outer ring 58A, a first inner ring 58B, and a first rotating body 58C. The first outer ring 58A is provided radially inward of the cover 56. The first inner ring 58B is provided on the outer surface 12A of the third portion 34. The first rotating body 58C is provided between the first outer ring 58A and the first inner ring 58B so that the first outer ring 58A is rotatable relative to the first inner ring 58B. For example, the first rotating body 58C is a ball, and the first bearing 58 is a ball bearing.

[0057] The second bearing 60 is provided between the brake force adjustment mechanism 18 and the hub shaft 12 so that the brake force adjustment mechanism 18 is rotatable relative to the hub shaft 12. For example, the second bearing 60 includes a second outer ring 60A, a second inner ring 60B, and a second rotating body 60C. The second outer ring 60A is provided on the inner surface of the second support member 44 of the brake force adjustment mechanism 18. The second inner ring 60B is provided on the outer surface 12A of the fourth portion 36. The second rotating body 60C is provided between the second outer ring 60A and the second inner ring 60B so that the second outer ring 60A is rotatable relative to the second inner ring 60B. For example, the second rotating body 60C is a rod-shaped member whose length coincides with the axial direction, and the second bearing 60 is a needle bearing.

[0058] For example, the hub 10 further comprises a first restricting member 62, a second restricting member 64, and a third restricting member 66. The first restricting member 62, the second restricting member 64, and the third restricting member 66 are configured to restrict the axial movement of the hub shell 14 relative to the hub shaft 12. The first restricting member 62, the second restricting member 64, and the third restricting member 66 are formed in an annular shape, through which the hub shaft 12 passes.

[0059] For example, the first restricting member 62 and the second restricting member 64 are lock nuts that are detachably mounted on the hub shaft 12. The first restricting member 62 and the second restricting member 64 are mounted on the hub shaft 12 such that the hub shell 14 is positioned between them in the axial direction. For example, the third restricting member 66 is a spacer that determines the position of the hub shell 14 relative to the second restricting member 64 in the axial direction. The third restricting member 66 is mounted on the hub shaft 12 such that it is positioned between the second restricting member 64 and the second support member 44 of the brake force adjustment mechanism 18 in the axial direction.

[0060] For example, the hub 10 further comprises a third bearing 68. The third bearing 68 is mounted on the second support member 44 such that the second support member 44 is rotatable relative to the third regulating member 66. For example, the third bearing 68 includes a third outer ring 68A, a third inner ring 68B, and a third rotating body 68C. The third outer ring 68A is mounted so as to be in contact with the third regulating member 66. The third inner ring 68B is mounted so as to be in contact with the second support member 44. The third rotating body 68C is mounted between the third outer ring 68A and the third inner ring 68B such that the third outer ring 68A is rotatable relative to the third inner ring 68B in the circumferential direction. For example, the third rotating body 68C is a ball, and the third bearing 68 is a ball bearing.

[0061] For example, the hub 10 further comprises a fourth restricting member 70 and a fifth restricting member 72. The fourth restricting member 70 and the fifth restricting member 72 are provided to restrict the axial movement of the power generation mechanism 22 relative to the hub shaft 12. The fourth restricting member 70 and the fifth restricting member 72 are formed in annular shape, through which the hub shaft 12 passes. For example, the fourth restricting member 70 and the fifth restricting member 72 are lock nuts that are detachably provided on the hub shaft 12. The fourth restricting member 70 and the fifth restricting member 72 are provided on the hub shaft 12 such that the power generation mechanism 22 is positioned between them in the axial direction.

[0062] As shown in Figure 3, the hub 10 is configured to be usable as a hub 10 for a human-powered vehicle when the power generation mechanism 22 is removed. The hub 10 in Figure 3 can be used in a human-powered vehicle where power generation by the power generation mechanism 22 is not required. By removing the power generation mechanism 22 from the hub 10, the hub 10 is made lighter. For example, in the hub 10 without the power generation mechanism 22 shown in Figure 3, the magnet 24 or magnet mounting part faces the hub shaft 12 when it is provided on the first mounting surface 16. In this embodiment, in the hub 10 without the power generation mechanism 22 shown in Figure 3, the magnet 24 provided on the first mounting surface 16 faces the hub shaft 12. For example, in the hub 10 without the power generation mechanism 22 shown in Figure 3, the magnet 24 or magnet mounting part faces the second mounting surface 20 when it is provided on the first mounting surface 16. In this embodiment, in the hub 10 which does not have the power generation mechanism 22 shown in Figure 3, the magnet 24 is positioned on the first mounting surface 16 and faces the second mounting surface 20.

[0063] For example, the hub 10 without the power generation mechanism 22 shown in Figure 3 further includes a sixth restricting member 74 in place of the electrical component 54. The sixth restricting member 74 is provided in the position where the electrical component 54 would be removed when the power generation mechanism 22 is removed. For example, the sixth restricting member 74 is a spacer that determines the position of the hub shell 14 relative to the first restricting member 62 in the axial direction. The sixth restricting member 74 is provided on the hub shaft 12 so as to be located between the first restricting member 62 and the first bearing 58 in the axial direction.

[0064] The inner surface 14A of the first portion 30A and the inner surface 14A of the second portion 32A are formed continuously in the axial direction. For example, the minimum inner diameter D3 of the hub shell 14 in the first region 30 is less than or equal to the maximum inner diameter D4 of the hub shell 14 in the second region 32. For example, the minimum inner diameter D3 of the hub shell 14 in the first region 30 is the minimum inner diameter of the first portion 30A. For example, the maximum inner diameter D4 of the hub shell 14 in the second region 32 is the minimum inner diameter of the second portion 32A. For example, the minimum inner diameter D3 of the hub shell 14 in the first region 30 is substantially equal to the maximum inner diameter D4 of the hub shell 14 in the second region 32.

[0065] For example, the minimum outer diameter D5 of the hub shell 14 in the first region 30 is substantially equal to the minimum outer diameter D6 of the hub shell 14 in the second region 32. For example, the minimum outer diameter D5 of the hub shell 14 in the first region 30 is the minimum outer diameter of the first part 30A. For example, the minimum outer diameter D6 of the hub shell 14 in the second region 32 is the minimum outer diameter of the second part 32A.

[0066] For example, in a direction perpendicular to the axial direction, the distance D7 from the first placement surface 16 to the second placement surface 20 is 15 mm or more and 25 mm or less. For example, the placement space SA1 is the space included in the first region 30 of the internal space SA. For example, the placement space SA1 is the space within the internal space SA in which the power generation mechanism 22 can be placed. The length L2 and distance D7 of the second placement surface 20 are determined according to the dimensions of the power generation mechanism 22 that can be attached to the hub 10, respectively.

[0067] The hub 10 has a structure that allows the power generation mechanism 22 to be attached and detached. For example, the shape of the outer surface 12A of the hub shaft 12 and the shape of the inner surface 14A of the hub shell 14 allow the power generation mechanism 22 to be attached and detached from the hub 10. For example, other components besides the power generation mechanism 22 are also attached to the hub shaft 12 on the outer surface 12A of the hub 10. For example, the hub shaft 12 is configured such that the outer diameter is largest in the middle portion in the axial direction. The hub shaft 12 may also be configured such that one outer diameter is largest in the axial direction.

[0068] The removal process for the power generation mechanism 22 will be described with reference to Figures 4 to 13. Through this removal process, the hub 10 shown in Figure 2 is transformed into the hub 10 shown in Figure 3, which does not have the power generation mechanism 22. The removal process for the power generation mechanism 22 includes the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, and eleventh steps.

[0069] The first step includes removing the second restricting member 64 and the third restricting member 66 from the hub shaft 12. Figure 4 shows the hub 10 after the second restricting member 64 and the third restricting member 66 have been removed in the first step. In the first step, the second restricting member 64 and the third restricting member 66 are removed from the hub shaft 12 by moving them in a first direction AD1 relative to the hub shaft 12. The first direction AD1 is the direction from the third portion 34 to the fourth portion 36 in the axial direction of the hub shaft 12.

[0070] The second step includes removing the hub shell 14 and the brake force adjustment mechanism 18 from the hub shaft 12. Figure 5 shows the hub 10 after the first step and the second step, with the hub shell 14 and brake force adjustment mechanism 18 removed. In the second step, after the cover 56 is removed from the hub shell 14, the hub shell 14 and the brake force adjustment mechanism 18 are removed from the hub shaft 12. The hub shell 14 and the brake force adjustment mechanism 18 are removed from the hub shaft 12 by moving them in a first direction AD1 relative to the hub shaft 12. The hub shell 14 is removed from the hub shaft 12 with the brake force adjustment mechanism 18 mounted on the hub shell 14. Therefore, the hub shell 14 and the brake force adjustment mechanism 18 are removed from the hub shaft 12 as a single unit.

[0071] The third step includes the removal of the first regulating member 62 and the electrical component 54 from the hub shaft 12. Figure 6 shows the hub 10 after the second step and the third step, with the first regulating member 62 and the electrical component 54 removed. In the third step, the first regulating member 62 and the electrical component 54 are removed from the hub shaft 12 by moving them in a second direction AD2 relative to the hub shaft 12. The second direction AD2 is the opposite direction to the first direction AD1 in the axial direction.

[0072] The fourth step includes the removal of the first bearing 58 and cover 56 from the hub shaft 12. Figure 7 shows the hub 10 after the third step and in the fourth step, with the first bearing 58 and cover 56 removed. In the fourth step, the first bearing 58 and cover 56 are removed from the hub shaft 12 by moving them in a second direction AD2 relative to the hub shaft 12.

[0073] Step 5 includes the removal of the power generation mechanism 22, the fourth restricting member 70, and the fifth restricting member 72 from the hub shaft 12. Figure 8 shows the hub 10 after step 4 and step 5, from which the power generation mechanism 22, the fourth restricting member 70, and the fifth restricting member 72 have been removed. In step 5, the power generation mechanism 22, the fourth restricting member 70, and the fifth restricting member 72 are removed from the hub shaft 12 by moving in a second direction AD2 relative to the hub shaft 12.

[0074] Step 6 includes the step of attaching the second bearing 60 to the brake force adjustment mechanism 18. Figure 9 shows the state in which the second bearing 60 is attached to the hub shell 14 and the brake force adjustment mechanism 18 that were removed from the hub shaft 12 in step 2. In step 6, after the second inner ring 60B is removed from the hub shaft 12, the second outer ring 60A is attached to the brake force adjustment mechanism 18, thereby attaching the second bearing 60 to the brake force adjustment mechanism 18.

[0075] Step 7 includes the step of attaching the hub axle 12 to the hub shell 14 and the brake force adjustment mechanism 18. Figure 10 shows the hub 10 after step 6 and in step 7 with the hub shell 14 and brake force adjustment mechanism 18 attached. In step 7, the hub axle 12 is attached to the hub shell 14 and the brake force adjustment mechanism 18 by moving the hub axle 12 in a first direction AD1 relative to the hub shell 14 and the brake force adjustment mechanism 18.

[0076] Step 8 includes the step of attaching the cover 56 and the first outer ring 58A to the hub shell 14. Figure 11 shows the hub 10 with the cover 56 and the first outer ring 58A attached after step 7 and in step 8. In step 8, the cover 56 is attached to the hub shell 14 by moving the cover 56 in a first direction AD1 relative to the hub shell 14.

[0077] Step 9 includes the step of attaching the first rotating body 58C and the first inner ring 58B to the hub shaft 12. Figure 12 shows the hub 10 after step 8 and in step 9 with the first rotating body 58C and the first inner ring 58B attached. In step 9, the first rotating body 58C and the first inner ring 58B are attached to the hub 10 by moving them in a first direction AD1 relative to the hub 10.

[0078] Step 10 includes the step of attaching the first restricting member 62 and the sixth restricting member 74 to the hub shaft 12. Figure 13 shows the hub 10 after step 9 and with the first restricting member 62 and the sixth restricting member 74 attached in step 10. In step 10, the first restricting member 62 and the sixth restricting member 74 are attached to the hub shaft 12 by moving them in a first direction AD1 relative to the hub shaft 12.

[0079] Step 11 includes the step of attaching the second restricting member 64 and the third restricting member 66 to the hub shaft 12. In step 11, the second restricting member 64 and the third restricting member 66 are attached to the hub shaft 12 by moving them in a second direction AD2 relative to the hub shaft 12.

[0080] The hub 10 may be configured to allow the power generation mechanism 22 to be installed after it has been removed. The installation process for the power generation mechanism 22 is performed, for example, by the reverse procedure of the removal process for the power generation mechanism 22.

[0081] In this embodiment, the hub 10 for a human-powered vehicle has a first region 30 with a length L3 greater than the second region 32 with a length L4 greater than the second region 32, thus allowing for adequate space to be secured in the internal space SA for the power generation mechanism 22. Although the second region 32 with a length L4 is smaller than the first region 30 with a length L3 greater than the first region 30, the brake force adjustment mechanism 18 is configured to keep the brake force below a predetermined brake force, so even a small brake force adjustment mechanism 18 can maintain the brake force appropriately. Because the second region 32 with a length L4 is smaller than the first region 30 with a length L3 greater than the first region 30, the hub 10 can be miniaturized, and the design flexibility of the hub 10 can be improved. With this embodiment of the hub 10 for a human-powered vehicle, the hub 10 can be used as a hub 10 for a human-powered vehicle even when the power generation mechanism 22 is removed, thus allowing for convenient use of the hub 10.

[0082] <Second Embodiment> The hub 10 of the second embodiment will be described with reference to Figure 14. The hub 10 of the second embodiment is the same as the hub 10 of the first embodiment, except that the configuration of the second bearing 60 is different, it does not include the third bearing 68, and it includes the fourth bearing 76. Therefore, components common to the first embodiment are denoted by the same reference numerals as in the first embodiment, and redundant explanations are omitted.

[0083] The second bearing 60 of this embodiment includes a plurality of second bearings 60. The plurality of second bearings 60 includes two second bearings 60. The plurality of second bearings 60 are spaced apart in the axial direction. The second outer ring 60A of each of the plurality of second bearings 60 is provided on the inner surface of the second support member 44 of the brake force adjustment mechanism 18. The second inner ring 60B of each of the plurality of second bearings 60 is provided on the outer surface 12A of the fourth portion 36. The second rotating body 60C of the plurality of second bearings 60 is a ball, and the plurality of second bearings 60 are ball bearings. One of the inner rings of the plurality of second bearings 60 is provided to contact the third regulating member 66.

[0084] For example, the hub 10 of this embodiment further comprises a fourth bearing 76. The fourth bearing 76 is provided on the brake force adjustment mechanism 18 so that the brake force adjustment mechanism 18 is rotatable relative to the hub shell 14. For example, the fourth bearing 76 includes a fourth outer ring 76A, a fourth inner ring 76B, and a fourth rotating body 76C. The fourth outer ring 76A is provided on the inner surface 14A of the second region 32. The fourth inner ring 76B is formed integrally with the second support member 44. The fourth rotating body 76C is provided between the fourth outer ring 76A and the fourth inner ring 76B so that the fourth outer ring 76A is rotatable relative to the fourth inner ring 76B in the circumferential direction. For example, the fourth rotating body 76C is a ball, and the fourth bearing 76 is a ball bearing.

[0085] <Third Embodiment> The hub 10 of the third embodiment will be described with reference to Figure 15. The hub 10 of the third embodiment is the same as the hub 10 of the second embodiment, except that the brake force adjustment mechanism 18 includes a third support member 78 and the second member 40 is provided on the inner surface of the third support member 78. Therefore, components common to the second embodiment are denoted by the same reference numerals as in the second embodiment, and redundant explanations are omitted.

[0086] The brake force adjustment mechanism 18 of this embodiment includes a third support member 78. The third support member 78 is provided on the inner surface 14A of the hub shell 14 in the second region 32 so as to rotate integrally with the hub shell 14. The outer surface of the third support member 78 is connected to the second support member 44 via the first member 38 and the second member 40.

[0087] For example, the second member 40 of this embodiment is provided in the brake force adjustment mechanism 18. The second member 40 of this embodiment is provided on the inner surface of the third support member 78 by spline fitting with the inner surface of the third support member 78.

[0088] <Fourth Embodiment> The hub 10 of the fourth embodiment will be described with reference to Figure 16. The hub 10 of the fourth embodiment is the same as the hub 10 of the first embodiment, except that it includes a fourth support member 80, has a different configuration of the first bearing 58, has a different configuration of the second bearing 60, does not include a third bearing 68, includes a fifth bearing 82, includes a sixth bearing 84, and does not include a cover 56. Therefore, components common to the first embodiment are denoted by the same reference numerals as in the first embodiment, and redundant explanations are omitted.

[0089] For example, the hub 10 of this embodiment further comprises a fourth support member 80. The fourth support member 80 is provided between the hub shell 14 and the hub shaft 12 in the radial direction of the hub shell 14. The fourth support member 80 is configured to be rotatable with respect to both the hub shell 14 and the hub shaft 12. The first bearing 58 of this embodiment is provided on the hub shaft 12 such that the fourth support member 80 is rotatable with respect to the hub shaft 12. For example, the first outer ring 58A of the first bearing 58 of this embodiment is provided radially inward of the fourth support member 80.

[0090] In this embodiment, the second outer ring 60A of the second bearing 60 is formed integrally with the second support member 44. In this embodiment, the second outer ring 60A may be provided separately from the second support member 44. The second inner ring 60B is provided on the outer circumference of the hub shaft 12. In this embodiment, the second rotating body 60C of the second bearing 60 is a ball, and the second bearing 60 is a ball bearing. The inner ring of the second bearing 60 is provided so as to contact the third regulating member 66 in the axial direction.

[0091] For example, the hub 10 of this embodiment further comprises a fifth bearing 82. The fifth bearing 82 is provided on the fourth support member 80 so that the hub shell 14 is rotatable relative to the fourth support member 80. For example, the fifth bearing 82 includes a fifth outer ring 82A, a fifth inner ring 82B, and a fifth rotating body 82C. The fifth outer ring 82A is provided on the inner surface 14A of the first portion 30A. The fifth inner ring 82B is provided on the radially outer side of the fourth support member 80. The fifth rotating body 82C is provided between the fifth outer ring 82A and the fifth inner ring 82B so that the fifth outer ring 82A is rotatable relative to the fifth inner ring 82B. For example, the fifth rotating body 82C is a ball, and the fifth bearing 82 is a ball bearing.

[0092] For example, the hub 10 of this embodiment further comprises a sixth bearing 84. The sixth bearing 84 is provided on the brake force adjustment mechanism 18 so that the brake force adjustment mechanism 18 is rotatable relative to the hub shell 14. For example, the sixth bearing 84 includes a sixth outer ring 84A, a sixth inner ring 84B, and a sixth rotating body 84C. The sixth outer ring 84A is provided on the inner surface 14A of the hub shell 14 in the second region 32. The sixth inner ring 84B is, First support member 42 It is formed integrally with the sixth inner ring 84B, First support member 42 It may be formed as a separate component. The sixth rotating body 84C is provided between the sixth outer ring 84A and the sixth inner ring 84B so that the sixth outer ring 84A is rotatable relative to the sixth inner ring 84B in the circumferential direction. For example, the sixth rotating body 84C is a ball, and the sixth bearing 84 is a ball bearing.

[0093] In this embodiment, when the hub 10 is used as a hub 10 for a human-powered vehicle with the power generation mechanism 22 removed, the brake force adjustment mechanism 18 may be configured to be provided in the first region 30. With the power generation mechanism 22 removed, the second support member 44 of the brake force adjustment mechanism 18 may be provided axially from the second region 32 to the first region 30. With the power generation mechanism 22 removed, the second support member 44 of the brake force adjustment mechanism 18 may be connected to the fourth support member 80. When the brake force adjustment mechanism 18 is provided from the second region 32 to the first region 30 with the power generation mechanism 22 removed, the brake force adjustment mechanism 18 can rotate stably.

[0094] <Example of changes> The descriptions of each embodiment are illustrative of possible forms of a hub for a human-powered vehicle according to this disclosure, and are not intended to limit its forms. A hub for a human-powered vehicle according to this disclosure may take the following forms, for example, variations of each embodiment shown below, and combinations of at least two non-inconsistent variations. In the following variations, parts common to the embodiments are denoted by the same reference numerals as in the embodiments, and their descriptions are omitted.

[0095] The first mounting surface 16 may be provided on the hub shaft 12, and the second mounting surface 20 may be provided on the hub shell 14. For example, the first mounting surface 16 may be provided on the outer surface 12A, and the second mounting surface 20 may be provided on the inner surface 14A. For example, the magnet 24 or magnet mounting portion may be provided on the hub shaft 12, and the power generation mechanism 22 may be detachably provided on the hub shell 14. For example, the power generation mechanism 22 may include a mounting portion that is detachably provided on the hub shell 14. For example, the power generation mechanism 22 may include a stator 50 and a yoke 52 provided on the hub shell 14.

[0096] The magnet 24 may be detachably provided on the first mounting surface 16. If the magnet 24 is detachably provided on the first mounting surface 16, the hub 10 in Figure 3 does not need to have the magnet 24. If the hub 10 in Figure 3 does not have the magnet 24, a magnet mounting portion configured to detachably attach the magnet 24 may be provided on the first mounting surface 16. If the hub 10 in Figure 3 does not have the magnet 24, the magnet 24 may be configured to detachably attach to the magnet mounting portion, and the magnet mounting portion may be detachably provided on the first mounting surface 16.

[0097] The hub 10 may also be equipped with an internal gear hub in addition to the brake force adjustment mechanism 18 and the power generation mechanism 22.

[0098] As used herein, the expression "at least one" means "one or more" of the desired options. For example, as used herein, "at least one" means "only one option" or "both of the two options" if there are two options. As another example, as used herein, "at least one" means "only one option" or "a combination of two or more any options" if there are three or more options. [Explanation of Symbols]

[0099] 10...hub, 12...hub axle, 14...hub shell, 16...first mounting surface, 18...brake force adjustment mechanism, 20...second mounting surface, 22...power generation mechanism, 22A...mounting part, 24...magnet, 28A...first flange, 28B...second flange, 30...first region, 30A...first part, 32...second region, 32A...second part, 38...first member, 40...second member, 50...stator, 52...yoke.

Claims

1. A hub for a human-powered vehicle, Hub axle and A hub shell rotatably mounted on the hub shaft and including a first flange and a second flange provided away from the first flange in the axial direction of the hub shaft, A first mounting surface provided on the hub shaft or the hub shell, on which a magnet or magnet mounting portion is provided, A brake force adjustment mechanism is provided in the hub shell, at least in part, to adjust the brake force of the brake device, The first region on which the first flange and the first placement surface are provided, The second flange and the second region on which the brake force adjustment mechanism is provided are provided, The hub shell includes a first portion included in the first region and a second portion included in the second region. The first part is formed integrally with the second part, The brake device includes a disc brake device that includes a rotating body that rotates relative to the hub shaft, The brake force adjustment mechanism is configured to adjust the brake force input by the brake device and transmit the adjusted brake force to the hub shell, wherein the hub is configured to do so.

2. A hub for a human-powered vehicle, Hub axle and A hub shell rotatably mounted on the hub shaft and including a first flange and a second flange provided away from the first flange in the axial direction of the hub shaft, A first mounting surface provided on the hub shaft or the hub shell, on which a magnet or magnet mounting portion is provided, A brake force adjustment mechanism is provided in the hub shell, at least in part, to adjust the brake force of the brake device, The first region on which the first flange and the first placement surface are provided, The second flange and the second region on which the brake force adjustment mechanism is provided are provided, The hub shell includes a first portion included in the first region and a second portion included in the second region. The first part is formed integrally with the second part, The first arrangement surface is provided on the hub shell, The magnet or the magnet mounting portion, when provided on the first mounting surface, faces the hub shaft. The hub shaft includes a second mounting surface on which a power generation mechanism, which is provided on the hub shaft and can be positioned between the hub shell and the hub shaft, is detachably mounted. The magnet or the magnet mounting portion is a hub that, when provided on the first mounting surface, faces the second mounting surface.

3. A hub for a human-powered vehicle, Hub axle and A hub shell rotatably mounted on the hub shaft and including a first flange and a second flange provided away from the first flange in the axial direction of the hub shaft, A first mounting surface provided on the hub shaft or the hub shell, on which a magnet or magnet mounting portion is provided, A brake force adjustment mechanism is provided in the hub shell, at least in part, to adjust the brake force of the brake device, The first region on which the first flange and the first placement surface are provided, The second flange and the second region on which the brake force adjustment mechanism is provided, The system comprises a power generation mechanism provided between the hub shell and the hub shaft, The hub shell includes a first portion included in the first region and a second portion included in the second region. The first part is formed integrally with the second part, The power generation mechanism is a hub that is detachably mounted on the hub shaft.

4. The hub according to claim 3, wherein the power generation mechanism includes a mounting portion that is detachably attached to the hub shaft.

5. The power generation mechanism includes a stator and a yoke provided on the hub shaft, The hub according to claim 3, wherein the stator and the yoke are provided so as to overlap with the first arrangement surface in the radial direction of the hub shaft.

6. The power generation mechanism is provided in the first region, the hub according to claim 3.

7. The hub according to any one of claims 1 to 6, wherein the minimum inner diameter of the hub shell in the first region is less than or equal to the maximum inner diameter of the hub shell in the second region.

8. The hub according to claim 7, wherein the minimum inner diameter of the hub shell in the first region is substantially equal to the maximum inner diameter of the hub shell in the second region.

9. The hub according to any one of claims 1 to 6, wherein the minimum outer diameter of the hub shell in the first region is substantially equal to the minimum outer diameter of the hub shell in the second region.

10. The brake force adjustment mechanism is provided on the hub shell, The hub according to any one of claims 1 to 6, wherein the hub shell is detachably mounted on the hub shaft when the brake force adjustment mechanism is provided on the hub shell.

11. The hub according to any one of claims 1 to 6, wherein the brake force adjustment mechanism adjusts the brake force so that the brake force becomes less than or equal to the predetermined brake force when the brake force is greater than a predetermined brake force.

12. The aforementioned brake force adjustment mechanism is A first member configured to be connectable to the aforementioned brake device and rotating relative to the hub shaft, The second portion includes a second member that engages with the first member, The hub according to claim 11, wherein the second member is configured to rotate relative to the first member when the braking force is greater than the predetermined braking force.

13. The hub according to claim 12, wherein the second member frictionally engages with the first member.

14. The hub according to any one of claims 1 to 6, wherein the first arrangement surface includes a straight portion parallel to the axial direction in a cross-section that includes the central axis of the hub shaft and is parallel to the axial direction.

15. The hub according to claim 1, wherein the length of the first arrangement surface in the axial direction is 30 mm or more and 40 mm or less.

16. The hub shaft includes a second mounting surface on which a power generation mechanism, which is provided on the hub shaft and can be positioned between the hub shell and the hub shaft, is detachably mounted. The hub according to claim 1, wherein the length of the second arrangement surface in the axial direction is 28 mm or more and 38 mm or less.

17. The hub shaft includes a second mounting surface on which a power generation mechanism, which is provided on the hub shaft and can be positioned between the hub shell and the hub shaft, is detachably mounted. The hub according to claim 1, wherein the distance from the first mounting surface to the second mounting surface in a direction perpendicular to the axial direction is 15 mm or more and 25 mm or less.

18. The hub according to claim 1, wherein in the axial direction, the length of the first region is greater than the length of the second region.

19. The hub according to claim 18, wherein the length of the first region in the axial direction is 40 mm or more and 50 mm or less.

20. The hub according to claim 18 or 19, wherein the length of the second region in the axial direction is 15 mm or more and 25 mm or less.

21. The hub according to claim 1, wherein the first region is adjacent to the second region in the axial direction.

Images