Hub assembly for human-powered vehicle

Abstract

A hub assembly includes a hub shaft, a hub housing, a sprocket support, a first ratchet member, a second ratchet member, and a spacer. The spacer includes at least one base member and at least one axial projection. At least one axial projection extends in an axial direction from the at least one base member. The at least one axial projection is at least partially disposed between the at least one first tooth and the at least one second tooth in the circumferential direction. The first axial tooth end is closer to the axial center plane of the hub assembly than the second axial tooth end. At least one base member of the spacer is disposed closer to the first axial tooth end than the second axial tooth end.

Description

Technical Field

[0001] The invention relates to a hub assembly for a human-powered vehicle. Background Art

[0002] A human-powered vehicle includes a hub assembly. The hub assembly includes at least two components. One of the purposes of the present disclosure is to improve the assembly or maintenance of the hub assembly. Another purpose of the present disclosure is to improve the movement of the hub assembly. Another purpose of the present disclosure is to limit the entry of foreign matter into the interior of the hub assembly. Summary of the invention

[0003] According to a first aspect of the present invention, a hub assembly for a human-powered vehicle includes a hub shaft, a hub shell, a sprocket support, a first ratchet member, a second ratchet member, and a spacer. The hub shaft has a central axis defining an axial direction and a circumferential direction. The hub shell is rotatably mounted on the hub shaft to rotate about the central axis. The hub shell includes at least one first tooth, the at least one first tooth having a first axial tooth end and a second axial tooth end opposite to the first axial tooth end. The sprocket support is rotatably mounted on the hub shaft to rotate about the central axis. The sprocket support includes a first spline. The first ratchet member includes at least one first ratchet tooth and a second spline configured to engage with the first spline. The second ratchet member includes at least one second ratchet tooth and at least one second tooth. At least one second ratchet tooth is configured to engage with at least one first ratchet tooth. At least one second tooth is configured to engage with at least one first tooth. The spacer includes at least one base member and at least one axial protrusion. At least one base member extends in the circumferential direction. At least one axial protrusion extends from at least one base member in the axial direction. At least one axial protrusion is at least partially disposed between at least one first tooth and at least one second tooth in a circumferential direction. A first axial tooth end of at least one first tooth is closer to an axial center plane of the hub assembly than a second axial tooth end of at least one first tooth. At least one base member of the spacer is disposed at a position closer to a first axial tooth end of at least one first tooth than a second axial tooth end of at least one first tooth.

[0004] With the hub assembly according to the first aspect, since at least one base member of the spacer is disposed at a position closer to the first axial tooth end of at least one first tooth than the second axial tooth end of at least one first tooth, the spacer is less likely to fall off during assembly or maintenance of the hub assembly. Therefore, assembly or maintenance of the hub assembly can be improved.

[0005] According to a second aspect of the present invention, the hub assembly according to the first aspect further includes a supporting member configured to urge the spacer toward the second ratchet member in the axial direction.

[0006] With the hub assembly according to the second aspect, the spacer can be held between the support member and the second ratchet member in the axial direction. Therefore, the assembly or maintenance of the hub assembly can be reliably improved.

[0007] According to a third aspect of the present invention, the hub assembly according to the second aspect is configured so that the support member includes a radial protrusion configured to urge the spacer toward the second ratchet member in the axial direction.

[0008] With the hub assembly according to the third aspect, the spacer can be reliably held between the radial protrusion and the second ratchet member in the axial direction. Therefore, the assembly or maintenance of the hub assembly can be reliably improved.

[0009] According to a fourth aspect of the present invention, the hub assembly according to the third aspect is configured so that the second ratchet member includes an engagement portion. The support member includes a first tubular portion extending in an axial direction from the radial protrusion toward the second ratchet member. The first tubular portion of the support member is configured to engage with the engagement portion of the second ratchet member.

[0010] With the hub assembly according to the fourth aspect, the support member and the second ratchet member can be reliably coupled using the engagement portion and the first tubular portion. Therefore, assembly or maintenance of the hub assembly can be reliably improved.

[0011] According to a fifth aspect of the present invention, the hub assembly according to the fourth aspect is configured so that the first tubular portion of the support member is configured to engage with the engagement portion of the second ratchet member in a snap-fit ​​manner.

[0012] With the hub assembly according to the fifth aspect, the support member and the second ratchet member can be reliably coupled using the engagement portion and the first tubular portion, while enabling the support member to be detachably and reattachably coupled to the second ratchet member. Therefore, assembly or maintenance of the hub assembly can be reliably improved.

[0013] According to a sixth aspect of the present invention, the hub assembly according to any one of the third to fifth aspects is configured so that the supporting member includes a second tubular portion, which extends in an axial direction from the radial protrusion toward an axial center plane of the hub assembly in an assembled state of the hub assembly.

[0014] With the hub assembly according to the sixth aspect, the second tubular portion can increase the rigidity of the support member. Therefore, the assembly or maintenance of the hub assembly can be reliably improved.

[0015] According to a seventh aspect of the present invention, the hub assembly according to any one of the second to sixth aspects further includes a spacer biasing member configured to bias the support member toward the second ratchet member in the axial direction.

[0016] With the hub assembly according to the seventh aspect, the support member and the second ratchet member can be reliably coupled using the engagement portion and the first tubular portion. Therefore, assembly or maintenance of the hub assembly can be reliably improved.

[0017] According to an eighth aspect of the present invention, a hub assembly for a human-powered vehicle includes a hub axle, a hub shell, a sprocket support, a first ratchet member, a second ratchet member, a biasing member, and a receiving member. The hub axle has a central axis defining an axial direction and a radial direction. The hub shell is rotatably mounted on the hub axle to rotate about the central axis. The hub shell includes at least one first tooth. The sprocket support is rotatably mounted on the hub axle to rotate about the central axis. The sprocket support includes a first spline. The first ratchet member includes at least one first ratchet tooth and a second spline configured to engage with the first spline. The second ratchet member includes at least one second ratchet tooth configured to engage with at least one first ratchet tooth and at least one second tooth configured to engage with at least one first tooth. The biasing member is arranged between the hub shell and the first ratchet member in the axial direction to bias the first ratchet member toward the second ratchet member in the axial direction. The receiving member is arranged between the first ratchet member and the biasing member in the axial direction. The first ratchet member has a radial ratchet protrusion extending in the radial direction. The radial ratchet protrusion of the first ratchet member is configured to limit displacement of the receiving member toward an axial center plane of the hub assembly in an assembled state of the hub assembly.

[0018] With the hub assembly according to the eighth aspect, the radial ratchet protrusion of the first ratchet member makes it less likely that the receiving member will fall off the first ratchet member. Therefore, the movement of the hub assembly can be stabilized.

[0019] In accordance with a ninth aspect of the present invention, the hub assembly according to the eighth aspect is configured so that the first ratchet member has an axial ratchet projection extending in the axial direction.

[0020] With the hub assembly according to the ninth aspect, the axial ratchet protrusion of the first ratchet member reliably makes it less likely that the receiving member will fall off the first ratchet member. Therefore, the movement of the hub assembly can be reliably stabilized.

[0021] In accordance with a tenth aspect of the present invention, the hub assembly according to the ninth aspect is configured so that the axial ratchet projection is configured to restrict the receiving member from being displaced in the radial direction away from the first ratchet member.

[0022] With the hub assembly according to the tenth aspect, the axial ratchet protrusion of the first ratchet member reliably makes it less likely that the receiving member will fall off the first ratchet member. Therefore, the movement of the hub assembly can be reliably stabilized.

[0023] According to an eleventh aspect of the present invention, the hub assembly according to any one of the eighth to tenth aspects is configured so that the receiving member includes a radial protrusion extending in a radial direction.

[0024] With the hub assembly according to the eleventh aspect, the radial projection makes it less likely that the receiving member will fall off the first ratchet member. Therefore, the movement of the hub assembly can be reliably stabilized.

[0025] In accordance with a twelfth aspect of the present invention, the hub assembly according to the eleventh aspect is configured so that the radial protrusion of the receiving member is configured to engage with the radial ratchet protrusion of the first ratchet member.

[0026] With the hub assembly according to the twelfth aspect, the radial projections and the radial ratchet projections make it less likely that the receiving member will fall off the first ratchet member. Therefore, the movement of the hub assembly can be reliably stabilized.

[0027] According to a thirteenth aspect of the present invention, the hub assembly according to any one of the eighth to tenth aspects is configured so that the receiving member includes an axial protrusion extending in the axial direction.

[0028] With the hub assembly according to the thirteenth aspect, the axial protrusion can increase the rigidity of the receiving member.

[0029] In accordance with a fourteenth aspect of the present invention, the hub assembly according to the thirteenth aspect is configured so that the axial projection of the receiving member is configured to abut against the first ratchet member.

[0030] With the hub assembly according to the fourteenth aspect, the axial position of the receiving member can be stabilized relative to the first ratchet member in the axial direction. Therefore, the movement of the hub assembly can be reliably stabilized.

[0031] According to a fifteenth aspect of the present invention, the hub assembly according to any one of the eighth to fourteenth aspects is configured so that the receiving member includes a first recessed portion recessed in the radial direction so that the first recessed portion engages with the radial ratchet projection.

[0032] With the hub assembly according to the fifteenth aspect, the first recessed portion can reliably stabilize the position of the receiving member relative to the first ratchet member in the axial direction. Therefore, the movement of the hub assembly can be reliably stabilized.

[0033] According to a sixteenth aspect of the present invention, the hub assembly according to the fifteenth aspect is configured so that the receiving member has an axial inner end portion, which extends in the axial direction from the first recessed portion toward the axial center plane of the hub assembly. The axial inner end portion has a radial innermost surface, which is located radially inwardly from the radial ratchet protrusion in the radial direction.

[0034] With the hub assembly according to the sixteenth aspect, the position of the receiving member can be reliably stabilized in the axial direction relative to the first ratchet member. Therefore, the movement of the hub assembly can be reliably stabilized.

[0035] According to the seventeenth aspect of the present invention, a hub assembly for a human-powered vehicle includes a hub axle, a hub shell, a sprocket support body and a sealing member. The hub axle has a central axis defining an axial direction. The hub shell is rotatably mounted on the hub axle to rotate about the central axis. The hub shell includes at least one first tooth. The sprocket support body is rotatably mounted on the hub axle to rotate about the central axis. The sealing member includes a fixed portion, a sealing portion and a branch portion. The fixed portion is configured to be mounted to one of the hub shell and the sprocket support body. The sealing portion extends in a first direction to slide relative to the sprocket support body. The branch portion extends in a second direction different from the first direction so that a grease retaining space is formed between the sealing portion and the branch portion.

[0036] With the hub assembly according to the seventeenth aspect, grease can be reliably retained in the grease retaining space. Therefore, the sealing member can reliably restrict foreign matter from entering the interior of the hub assembly.

[0037] In accordance with an eighteenth aspect of the present invention, the hub assembly according to the seventeenth aspect further includes a dust cover configured to be mounted to the sprocket support body.

[0038] With the hub assembly according to the eighteenth aspect, the seal member and the dust cover can more reliably restrict foreign matter from entering the interior of the hub assembly.

[0039] In accordance with a nineteenth aspect of the present invention, the hub assembly according to the eighteenth aspect is configured so that a labyrinth seal is formed between the seal member and the dust cover.

[0040] With the hub assembly according to the nineteenth aspect, the seal member and the dust cover can more reliably restrict foreign matter from entering the interior of the hub assembly.

[0041] According to the twentieth aspect of the present invention, the hub assembly according to any one of the seventeenth to nineteenth aspects is configured so that the sprocket support body includes a first spline. The hub assembly also includes a first ratchet member and a second ratchet member. The first ratchet member includes at least one first ratchet tooth and a second spline configured to engage with the first spline. The second ratchet member includes at least one second ratchet tooth configured to engage with the at least one first ratchet tooth and at least one second tooth configured to engage with the at least one first tooth. A biasing member is arranged between the hub shell and the first ratchet member in the axial direction to bias the first ratchet member toward the second ratchet member in the axial direction.

[0042] With the hub assembly according to the twentieth aspect, the first ratchet member can be pressed against the second ratchet member. Therefore, the movement of the hub assembly can be stabilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] A more complete understanding of the present invention and many of its attendant advantages may be readily obtained, as well as better appreciated, by referring to the following detailed description taken in conjunction with the accompanying drawings.

[0044] Figure 1 is a perspective view of a human-powered vehicle including a hub assembly according to one of the embodiments.

[0045] Figure 2 yes Figure 1 A side elevation view of the hub assembly is shown.

[0046] Figure 3 is along Figure 1 A cross-sectional view of the hub assembly taken along line III-III.

[0047] Figure 4 yes Figure 1 An exploded perspective view of a portion of the hub assembly is shown.

[0048] Figure 5 is along Figure 8 A cross-sectional view of the hub assembly taken along line VV.

[0049] Figure 6 yes Figure 1 An exploded perspective view of a portion of the hub assembly is shown.

[0050] Figure 7 yes Figure 1 An exploded perspective view of a portion of the hub assembly is shown.

[0051] Figure 8 is along Figure 1 A cross-sectional view of the hub assembly taken along line VIII-VIII.

[0052] Fig. 9 It is shown Figure 1 Schematic diagram of the action of the first ratchet member and the sprocket support body of the hub assembly (pedaling).

[0053] Fig.10 To show Figure 1 Schematic diagram (sliding) of the action of the first ratchet member and the sprocket support body of the hub assembly shown.

[0054] Fig.11 is along Figure 1 An enlarged cross-sectional view of the hub assembly taken along line XI-XI.

[0055] Fig.12yes Figure 1 A perspective view of a spacer of the hub assembly is shown.

[0056] Fig.13 yes Figure 1 A perspective view of a support member of the hub assembly is shown.

[0057] Fig.14 yes Figure 1 A perspective view of the sealing member and stopper of the hub assembly is shown.

[0058] Fig.15 is along Fig.14 An enlarged cross-sectional view of the sealing member taken along line XV-XV.

[0059] Fig.16 yes Figure 1 A perspective view of the dust cover and cover stop of the hub assembly is shown.

[0060] Fig.17 yes Figure 1 A perspective view of the dust cover of the hub assembly is shown.

[0061] Fig.18 is an enlarged cross-sectional view of a hub assembly according to a modification.

[0062] Fig.19 is an enlarged cross-sectional view of a hub assembly according to another modification.

[0063] Fig. 20 is an enlarged cross-sectional view of a hub assembly according to another modification.

[0064] Fig.21 is an enlarged cross-sectional view of a hub assembly according to another modification. DETAILED DESCRIPTION

[0065] The embodiments will now be described with reference to the drawings, wherein like reference numerals designate corresponding or identical elements throughout the various drawings.

[0066] like Figure 1 As shown, the hub assembly 10 for a human-powered vehicle 2 includes a hub axle 12, a hub shell 14, and a sprocket support body 16. The hub axle 12 has a center axis A1. The hub axle 12 extends along the center axis A1. The center axis A1 defines an axial direction D1. The center axis A1 defines a circumferential direction D2. The axial direction D1 is defined along the center axis A1. The circumferential direction D2 is defined around the center axis A1. The hub shell 14 is rotatably mounted on the hub axle 12 to rotate about the center axis A1. The sprocket support body 16 is rotatably mounted on the hub axle 12 to rotate about the center axis A1. The hub shell 14 is configured to be connected to at least two spokes of a wheel.

[0067] In the present application, the term "human-powered vehicle" includes a vehicle that travels with power including at least the human power of the user riding the vehicle. Human-powered vehicles include various bicycles, such as mountain bikes, road bikes, city bikes, cargo bikes, hand bikes and recumbent bikes. In addition, human-powered vehicles include electric bicycles called E-bikes. Electric bicycles include electric-assisted bicycles configured to assist the propulsion of the vehicle with an electric motor. However, the total number of wheels of the human-powered vehicle is not limited to two. For example, human-powered vehicles include vehicles with one wheel or three or more wheels. In particular, human-powered vehicles do not include vehicles that use only a driving source as power. Examples of driving sources include internal combustion engines and electric motors. In general, light road vehicles, including vehicles that do not require a driver's license on public roads, are considered human-powered vehicles.

[0068] In this application, the following directional terms "front," "rear," "forward," "rearward," "left," "right," "lateral," "upward," and "downward," and any other similar directional terms refer to those directions determined based on a user in a standard user position in a human-powered vehicle 2 and facing the handlebars or steering device. Examples of a standard user position include a saddle and a seat. Therefore, these terms used to describe the hub assembly 10 or other components should be understood relative to a human-powered vehicle 2 equipped with the hub assembly 10 or other components used in an upright riding position on a horizontal plane.

[0069] like Figure 2 As shown, the hub axle 12 is configured to be fixed to the body 6 of the human-powered vehicle 2 by a hub fixing structure. The sprocket support body 16 is configured to be coupled to the sprocket assembly 4. The sprocket support body 16 is coupled to the sprocket assembly 4 to rotate integrally with the sprocket assembly 4 around the central axis A1. The sprocket support body 16 includes at least two external spline teeth 18. The at least two external spline teeth 18 are configured to engage with at least two internal spline teeth of the sprocket assembly 4.

[0070] An axial center plane CP is defined to bisect the axial length AL of the hub assembly 10 in the axial direction D1. The axial center plane CP is perpendicular to the center axis A1.

[0071] like Figure 3As shown, the hub assembly 10 includes a first bearing unit 20, a second bearing unit 22, a third bearing unit 24, and a fourth bearing unit 26. The first bearing unit 20 is disposed between the hub axle 12 and the hub shell 14 to rotatably support the hub shell 14 about the center axis A1 relative to the hub axle 12. The second bearing unit 22 is disposed between the hub axle 12 and the sprocket support body 16 to rotatably support the sprocket support body 16 about the center axis A1 relative to the hub axle 12. The third bearing unit 24 is disposed between the hub axle 12 and the sprocket support body 16 to rotatably support the sprocket support body 16 about the center axis A1 relative to the hub axle 12. The fourth bearing unit 26 is disposed between the hub axle 12 and the hub shell 14 to rotatably support the hub shell 14 about the center axis A1 relative to the hub axle 12.

[0072] The hub assembly 10 includes a one-way clutch structure 28. The one-way clutch structure 28 is configured to restrict the sprocket support 16 from rotating relative to the hub shell 14 about the central axis A1 in a first rotation direction D31 (see, for example, Figure 1 ) rotates. Therefore, when the sprocket support body 16 receives the pedaling torque T1 in the first rotation direction D31, the pedaling torque T1 rotates in the first rotation direction D31 (see, for example Figure 1 ) is transmitted from the sprocket support body 16 to the hub shell 14. The one-way clutch structure 28 is configured to allow the sprocket support body 16 to rotate relative to the hub shell 14 in the second rotation direction D32 (see, for example, Figure 1 That is, the one-way clutch structure 28 is configured to allow the hub housing 14 to rotate relative to the sprocket support body 16 about the central axis A1 in the first rotation direction D31 (see, for example, Figure 1 ).like Figure 1 As shown, the first rotation direction D31 is opposite to the second rotation direction D32.

[0073] like Figure 4 As shown, the hub shell 14 includes at least one first tooth 30. The hub shell 14 includes a tubular portion 32. In the present embodiment, the hub shell 14 includes at least two first teeth 30. However, the total number of the at least one first tooth 30 is not limited to the illustrated embodiment.

[0074] The sprocket support body 16 includes a first spline 34. The first spline 34 includes at least one first spline tooth 34A. In the present embodiment, the first spline 34 includes at least two first spline teeth 34A. However, the total number of at least one first spline tooth 34A is not limited to the illustrated embodiment.

[0075] like Figure 5As shown, at least one first tooth 30 extends radially inward from the tubular portion 32. At least two first teeth 30 extend radially inward from the tubular portion 32. The sprocket support body 16 includes a base portion 16A. For example, the base portion 16A has an annular shape. The first spline 34 is arranged radially outside the base portion 16A. At least one first spline tooth 34A extends radially outward from the base portion 16A. At least two first spline teeth 34A extend radially outward from the base portion 16A. The shape of the base portion 16A is not limited to an annular shape.

[0076] like Figure 4 As shown, the one-way clutch structure 28 includes a first ratchet member 36. That is, the hub assembly 10 for the human-powered vehicle 2 includes a first ratchet member 36. The first ratchet member 36 includes a second spline 38. The second spline 38 is configured to engage with the first spline 34. The second spline 38 includes at least one second spline tooth 38A. In the present embodiment, the second spline 38 includes at least two second spline teeth 38A. However, the total number of at least one second spline tooth 38A is not limited to the illustrated embodiment.

[0077] like Figure 5 As shown, the first spline 34 and the second spline 38 are engaged to transfer rotational force between the sprocket support body 16 and the first ratchet member 36. At least one first spline tooth 34A and at least one second spline tooth 38A are meshed to transfer rotational force between the sprocket support body 16 and the first ratchet member 36. At least two first spline teeth 34A and at least two second spline teeth 38A are meshed to transfer rotational force between the sprocket support body 16 and the first ratchet member 36.

[0078] The first ratchet member 36 includes a first base portion 36A. For example, the first base portion 36A has an annular shape. The second spline 38 is disposed radially inwardly of the first base portion 36A. At least one second spline tooth 38A extends radially inwardly from the first base portion 36A. At least two second spline teeth 38A extend radially inwardly from the first base portion 36A. The shape of the first base portion 36A is not limited to the illustrated embodiment.

[0079] like Figure 4 As shown, the one-way clutch structure 28 includes a second ratchet member 40. That is, the hub assembly 10 for a human-powered vehicle includes a second ratchet member 40. The second ratchet member 40 includes at least one second tooth 42. In the present embodiment, the second ratchet member 40 includes at least two second teeth 42. However, the total number of the at least one second tooth 42 is not limited to the illustrated embodiment.

[0080] The second ratchet member 40 includes a second base portion 40A. For example, the second base portion 40A has an annular shape. At least one second tooth 42 extends radially outward from the second base portion 40A. At least two second teeth 42 extend radially outward from the second base portion 40A. The shape of the second base portion 40A is not limited to the illustrated embodiment.

[0081] like Figure 5 As shown, at least one second tooth 42 is configured to engage with at least one first tooth 30. The at least one first tooth 30 and the at least one second tooth 42 are meshed to transmit the rotational force between the hub shell 14 and the second ratchet member 40. At least two second teeth 42 are configured to engage with at least two first teeth 30. The at least two first teeth 30 and the at least two second teeth 42 are meshed to transmit the rotational force between the hub shell 14 and the second ratchet member 40.

[0082] like Figure 6 As shown, the first ratchet member 36 includes at least one first ratchet tooth 44. The at least one first ratchet tooth 44 protrudes from the first base portion 36A toward the second ratchet member 40. In the present embodiment, the first ratchet member 36 includes at least two first ratchet teeth 44. The at least two first ratchet teeth 44 protrude from the first base portion 36A toward the second ratchet member 40. However, the total number of the at least one first ratchet tooth 44 is not limited to the illustrated embodiment.

[0083] like Figure 7 As shown, the second ratchet member 40 includes at least one second ratchet tooth 46. The at least one second ratchet tooth 46 protrudes from the second base portion 40A toward the first ratchet member 36. In the present embodiment, the second ratchet member 40 includes at least two second ratchet teeth 46. The at least two second ratchet teeth 46 protrude from the second base portion 40A toward the first ratchet member 36. However, the total number of the at least one second ratchet tooth 46 is not limited to the illustrated embodiment.

[0084] like Figure 8 As shown, at least one second ratchet tooth 46 is configured to engage with at least one first ratchet tooth 44. At least one first ratchet tooth 44 and at least one second ratchet tooth 46 are configured to mesh to transfer rotational force between the first ratchet member 36 and the second ratchet member 40. At least two second ratchet teeth 46 are configured to engage with at least two first ratchet teeth 44. At least two first ratchet teeth 44 and at least two second ratchet teeth 46 are configured to mesh to transfer rotational force between the first ratchet member 36 and the second ratchet member 40.

[0085] The one-way clutch structure 28 includes a biasing member 47. That is, the hub assembly 10 for the human-powered vehicle 2 includes a biasing member 47. The biasing member 47 is disposed between the hub housing 14 and the first ratchet member 36 along the axial direction D1 to bias the first ratchet member 36 toward the second ratchet member 40 along the axial direction D1. The axial direction D1 includes a first axial direction D11 and a second axial direction D12. The second axial direction D12 is a direction opposite to the first axial direction D11. The biasing member 47 is configured to bias the first ratchet member 36 toward the second ratchet member 40 along the first axial direction D11. In the present embodiment, the biasing member 47 includes a spring. However, if necessary or desired, the biasing member 47 may include other members in addition to the spring.

[0086] The hub assembly 10 for the human-powered vehicle 2 includes a receiving member 48. The receiving member 48 is disposed between the first ratchet member 36 and the biasing member 47 in the axial direction D1. The receiving member 48 is pressed against the first ratchet member 36 by the biasing member 47. The receiving member 48 slidably contacts the first ratchet member 36.

[0087] like Fig. 9 As shown, the first spline 34 includes a helical spline. The second spline 38 includes a helical spline. The first spline tooth 34A has a helical shape. The second spline tooth 38A has a helical shape. When the pedaling torque T1 is input to the sprocket support body 16 in the first rotational direction D31, at least one second spline tooth 38A is guided by at least one first spline tooth 34A in the first axial direction D11 relative to the sprocket support body 16. Figure 8 As shown, this causes at least two first ratchet teeth 44 to be firmly engaged with at least two second ratchet teeth 46. In this state, the pedaling torque T1 (for example, see Fig. 9 ) from the sprocket support 16 via the first ratchet member 36 and the second ratchet member 40 ( Figure 8 ) is transmitted to the hub shell 14 ( Figure 8 ).

[0088] like Fig.10 As shown, the first spline 34 includes at least one guide portion 34G. The guide portion 34G extends from at least one of the first spline teeth 34A in the circumferential direction D2. The at least one guide portion 34G is configured to move the first ratchet member 36 away from the second ratchet member 40 in the second axial direction D12 during sliding or freewheeling. The at least one guide portion 34G is configured to move the first ratchet member 36 against the biasing force of the biasing member 47 during sliding or freewheeling. Figure 4 As shown, this allows the hub housing 14 and the second ratchet member 40 to rotate relative to the sprocket support 16 and the first ratchet member 36 in the first rotational direction D31.

[0089] The rotation of the sprocket support body 16 and the sprocket assembly 4 is stopped during coasting because the rotation of the crank is stopped when the human-powered vehicle 2 is moving forward. During coasting, the wheel coupled to the hub housing 14 rotates in the first rotational direction D31, while the rotation of the sprocket support body 16 and the sprocket assembly 4 is stopped. When the hub housing 14 rotates in the first rotational direction D31 relative to the sprocket support body 16, the at least one guide portion 34G and the at least one first spline tooth 34A guide the at least one second spline tooth 38A in the second axial direction D12. Therefore, the first ratchet member 36 moves relative to the second ratchet member 40 in the second axial direction D12 against the biasing force of the biasing member 47 during coasting, thereby reducing the engagement between the first ratchet tooth 44 and the second ratchet tooth 46. This allows the second ratchet member 40 to rotate relative to the first ratchet member 36 in the first rotational direction D31, while the at least one first ratchet tooth 44 of the first ratchet member 36 slides with the at least one second ratchet tooth 46 of the second ratchet member 40. Therefore, the hub shell 14 is rotatable in the first rotation direction D31 relative to the sprocket support 16 during sliding.

[0090] like Figure 7 As shown, in the present embodiment, the guide portion 34G is integrally provided with the first spline tooth 34A as a one-piece unitary member. However, if necessary or desired, the guide portion 34G may be a separate member from the first spline tooth 34A.

[0091] like Fig.11 As shown, the first ratchet member 36 has a radial ratchet protrusion 36B. The central axis A1 defines a radial direction D4. The radial ratchet protrusion 36B extends in the radial direction D4. The first ratchet member 36 has an axial ratchet protrusion 36C. The axial ratchet protrusion 36C extends in the axial direction D1. The radial direction D4 is perpendicular to the central axis A1. The axial ratchet protrusion 36C extends from the first base portion 36A toward the axial center plane CP in the axial direction D1. The radial ratchet protrusion 36B extends radially outward from the axial ratchet protrusion 36C in the radial direction D4.

[0092] The radial ratchet protrusion 36B of the first ratchet member 36 is configured to limit the displacement of the receiving member 48 toward the axial center plane CP of the hub assembly 10 in the assembled state of the hub assembly 10. The axial ratchet protrusion 36C is configured to limit the displacement of the receiving member 48 in the radial direction D4 away from the first ratchet member 36. If needed or desired, the radial ratchet protrusion 36B can be omitted from the first ratchet member 36. If needed or desired, the axial ratchet protrusion 36C can be omitted from the first ratchet member 36.

[0093] The receiving member 48 includes an axial protrusion 48A. The axial protrusion 48A extends in the axial direction D1. The axial protrusion 48A of the receiving member 48 is configured to abut against the first ratchet member 36. The receiving member 48 includes an additional axial protrusion 48B. The additional axial protrusion 48B extends from the axial protrusion 48A away from the first ratchet member 36 in the axial direction D1. The additional axial protrusion 48B is at least partially disposed radially inwardly of the axial protrusion 48A. The additional axial protrusion 48B is at least partially disposed radially inwardly of the biasing member 47.

[0094] The hub assembly 10 includes a friction member 49. The friction member 49 is disposed between the second ratchet member 40 and the sprocket support body 16. The friction member 49 slidably contacts the second ratchet member 40 and the sprocket support body 16. The biasing member 47 is configured to bias the receiving member 48, the first ratchet member 36, the second ratchet member 40, and the friction member 49 toward the sprocket support body 16 in the axial direction D1.

[0095] like Fig.12 As shown, the hub assembly 10 for a human-powered vehicle includes a spacer 50. The spacer 50 includes at least one base member 52 and at least one axial protrusion 54. The at least one base member 52 extends in the circumferential direction D2. The at least one axial protrusion 54 extends from the at least one base member 52 along the axial direction D1.

[0096] In the present embodiment, the spacer 50 includes a base member 52 and at least two axial protrusions 54. The base member 52 has an annular shape. The at least two axial protrusions 54 extend from the base member 52 in the axial direction D1. However, the total number of at least one base member 52 is not limited to the illustrated embodiment. The total number of at least one axial protrusion 54 is not limited to the illustrated embodiment. If necessary or desired, the spacer 50 may include at least two base members 52 arranged circumferentially around the central axis A1. In this variation, for example, each of the at least two base members 52 has an arc shape.

[0097] like Figure 4 As shown, at least one axial protrusion 54 is at least partially disposed between at least one first tooth 30 and at least one second tooth 42 in the circumferential direction D2. The axial protrusion 54 is at least partially disposed between the first tooth 30 and the second tooth 42 in the circumferential direction D2. The axial protrusion 54 is completely disposed between the first tooth 30 and the second tooth 42 in the circumferential direction D2. However, if needed or desired, the axial protrusion 54 may be partially disposed between the first tooth 30 and the second tooth 42 in the circumferential direction D2.

[0098] In the present embodiment, the spacer 50 is made of a non-metallic material. The spacer 50 is made of a resin material. However, if necessary or desired, the spacer 50 may be made of a material other than a resin material. If necessary or desired, the spacer 50 may be omitted from the hub assembly 10.

[0099] like Fig.11 As shown, at least one first tooth 30 has a first axial tooth end 30A and a second axial tooth end 30B opposite to the first axial tooth end 30A. Each of the at least two first teeth 30 has a first axial tooth end 30A and a second axial tooth end 30B. The first tooth 30 extends between the first axial tooth end 30A and the second axial tooth end 30B in the axial direction D1. The first axial tooth end 30A of at least one first tooth 30 is closer to the axial center plane CP of the hub assembly 10 than the second axial tooth end 30B of at least one first tooth 30.

[0100] At least one base member 52 of the spacer 50 is disposed at a position closer to the first axial tooth end 30A of at least one first tooth 30 than the second axial tooth end 30B of at least one first tooth 30. If needed or desired, at least one base member 52 of the spacer 50 may be disposed at a position closer to the second axial tooth end 30B than the first axial tooth end 30A.

[0101] The hub assembly 10 further includes a support member 60. The support member 60 is configured to push the spacer 50 toward the second ratchet member 40 in the axial direction D1. The support member 60 is coupled to the second ratchet member 40 to restrict the spacer 50 from moving relative to the second ratchet member 40 in the axial direction D1.

[0102] The support member 60 includes a radial protrusion 62. The radial protrusion 62 is configured to push the spacer 50 toward the second ratchet member 40 in the axial direction D1. The radial protrusion 62 is contactable with at least one base member 52 of the spacer 50. The at least one base member 52 of the spacer 50 is at least partially disposed between the radial protrusion 62 and the second ratchet member 40 in the axial direction D1.

[0103] like Fig.13 As shown, the support member 60 includes a first tubular portion 64. A radial protrusion 62 extends radially outward from the first tubular portion 64. For example, the radial protrusion 62 has an annular shape. The first tubular portion 64 has an annular shape. However, the shape of the radial protrusion 62 is not limited to the illustrated embodiment. The shape of the first tubular portion 64 is not limited to the illustrated embodiment.

[0104] The first tubular portion 64 includes a tubular portion 64A and at least one first engaging projection 64B. At least one first engaging projection 64B protrudes from the tubular portion 64A. In the present embodiment, the first tubular portion 64 includes at least two first engaging projections 64B. At least two first engaging projections 64B protrude radially outward from the tubular portion 64A. However, the total number of at least one first engaging projection 64B is not limited to the illustrated embodiment.

[0105] like Fig.11 As shown, the first tubular portion 64 extends from the radial protrusion 62 toward the second ratchet member 40 in the axial direction D1. The second ratchet member 40 includes an engagement portion 66. The first tubular portion 64 of the support member 60 is configured to engage with the engagement portion 66 of the second ratchet member 40. In a state where the first tubular portion 64 is engaged with the engagement portion 66, at least one base member 52 of the spacer 50 is at least partially disposed between the radial protrusion 62 and the second ratchet member 40 in the axial direction D1. The first tubular portion 64 of the support member 60 is configured to engage with the engagement portion 66 of the second ratchet member 40 detachably and reattachably.

[0106] In the present embodiment, the first tubular portion 64 of the support member 60 is configured to engage with the engagement portion 66 of the second ratchet member 40 in a snap-fit ​​manner. However, if needed or desired, the first tubular portion 64 of the support member 60 can be configured to engage with the engagement portion 66 of the second ratchet member 40 in a manner other than a snap-fit ​​manner.

[0107] The engagement portion 66 protrudes radially inward from the second base portion 40A. At least one first engagement protrusion 64B is configured to be detachably and reattachably engaged with the engagement portion 66. At least two first engagement protrusions 64B are configured to engage with the engagement portion 66. The first tubular portion 64 is elastically deformable to allow the at least one first engagement protrusion 64B to be separated from or reattached to the engagement portion 66 of the second ratchet member 40.

[0108] The support member 60 includes a second tubular portion 68. The second tubular portion 68 extends from the radial protrusion 62 toward the axial center plane CP of the hub assembly in the axial direction D1 in the assembled state of the hub assembly 10. In the present embodiment, the second tubular portion 68 has an annular shape. However, if necessary or desired, the second tubular portion 68 may have a shape other than an annular shape. If necessary or desired, the second tubular portion 68 may be omitted from the support member 60.

[0109] like Fig.11As shown, the hub assembly 10 for a human-powered vehicle 2 includes a sealing member 70. The sealing member 70 includes a fixed portion 72, a sealing portion 74, and a branch portion 76. The fixed portion 72 is configured to be mounted to one of the hub shell 14 and the sprocket support body 16. The sealing portion 74 extends in a first direction D51 so as to slide relative to the sprocket support body 16. The branch portion 76 extends in a second direction D52 different from the first direction D51 so that a grease retaining space 78 is formed between the sealing portion 74 and the branch portion 76. Grease is provided in the grease retaining space 78. The first direction D51 intersects with the second direction D52. The first direction D51 intersects with the axial direction D1. The second direction D52 intersects with the axial direction D1.

[0110] The sealing portion 74 is configured to contact the sprocket support body 16 in the assembled state of the hub assembly 10. The sealing portion 74 elastically deforms to maintain contact between the sealing portion 74 and the sprocket support body 16 in the assembled state. The branch portion 76 is spaced apart from the sprocket support body 16 in the assembled state.

[0111] The hub assembly 10 for the human-powered vehicle 2 includes a stopper 79. The stopper 79 is coupled to the hub shell 14 to hold the fixing portion 72 of the sealing member 70 between the hub shell 14 and the stopper 79. The stopper 79 is coupled to the hub shell 14 detachably and reattachably.

[0112] like Fig.14 As shown, the sealing member 70 has an annular shape. The fixed portion 72 has an annular shape. The sealing portion 74 has an annular shape. The branch portion 76 has an annular shape. The stopper 79 includes a snap ring. However, if necessary or desired, the fixed portion 72 may have a shape other than an annular shape. If necessary or desired, the sealing portion 74 may have a shape other than an annular shape. If necessary or desired, the branch portion 76 may have a shape other than an annular shape. If necessary or desired, the stopper 79 may include a structure other than a snap ring.

[0113] like Fig.15 As shown, the sealing portion 74 has a first length L1 defined along the first direction D51 from the fixing portion 72 in a separated state in which the sealing portion 74 is separated from the hub shell 14. The branch portion 76 has a second length L2 defined along the second direction D52 from the fixing portion 72 in a separated state in which the sealing portion 74 is separated from the hub shell 14. In the present embodiment, the first length L1 is longer than the second length L2. However, if necessary or desired, the first length L1 may be equal to or shorter than the second length L2.

[0114] like Fig.11As shown, the hub assembly 10 also includes a dust cover 80. The dust cover 80 is configured to be mounted to the sprocket support body 16. The hub assembly 10 also includes a cover stopper 82. The cover stopper 82 is coupled to the sprocket support body 16 to hold the dust cover 80 between the sprocket support body 16 and the cover stopper 82. The cover stopper 82 is detachably and reattachably coupled to the sprocket support body 16.

[0115] like Fig.16 As shown, the dust cover 80 has an annular shape. The cover stopper 82 includes a snap ring. However, if necessary or desired, the dust cover 80 can have a shape other than an annular shape. If necessary or desired, the cover stopper 82 can include a structure other than a snap ring.

[0116] like Fig.11 As shown, a labyrinth seal is formed between the sealing member 70 and the dust cover 80. The dust cover 80 includes a dust cover base 83 and a protruding portion 84. The dust cover base 83 is configured to be mounted to the sprocket support body 16. The dust cover base 83 is radially spaced from the tubular portion 32 of the hub shell 14. The protruding portion 84 protrudes from the dust cover base 83 in the axial direction D1. The protruding portion 84 protrudes from the dust cover base 83 toward the sealing member 70 in the axial direction D1.

[0117] The protruding portion 84 is at least partially disposed radially inside the fixing portion 72. The protruding portion 84 is at least partially disposed radially outside the sealing portion 74. The fixing portion 72 and the sealing portion 74 form a recess 70R. The recess 70R extends circumferentially around the center axis A1. The protruding portion 84 protrudes from the dust cover base 83 toward the recess 70R in the axial direction D1.

[0118] like Fig.17 As shown in , the dust cover base 83 has an annular shape. The protruding portion 84 has an annular shape. However, if necessary or desired, the dust cover base 83 can have a shape other than an annular shape. If necessary or desired, the protruding portion 84 can have a shape other than an annular shape.

[0119] like Fig.18 As shown, the hub assembly 10 may further include a spacer biasing member 90. The spacer biasing member 90 is configured to bias the support member 60 toward the second ratchet member 40 in the axial direction D1. Fig.18 In the variation shown, the second tubular portion 68 of the support member 60 makes the radial position of the spacer biasing member 90 more stable.

[0120] like Fig.19As shown, the receiving member 48 may include a radial protrusion 48C. The radial protrusion 48C extends in the radial direction D4. The radial protrusion 48C protrudes radially inward from the additional axial protrusion 48B of the receiving member 48. The radial protrusion 48C of the receiving member 48 is configured to engage with the radial ratchet protrusion 36B of the first ratchet member 36. The receiving member 48 may have a minimum inner diameter DM1, which is smaller than the outer diameter DM2 of the radial ratchet protrusion 36B. Fig.19 In the illustrated variant, the minimum inner diameter DM1 is defined by the radial protrusion 48C. Fig. 20 As shown, the radial protrusion 48C can be omitted from the receiving member 48. Fig. 20 In the variant shown, the minimum inner diameter DM1 is defined by an additional axial projection 48B of the receiving member 48 .

[0121] like Fig.21 As shown, the receiving member 48 may include a first recessed portion 48D. The first recessed portion 48D is recessed in the radial direction D4 so that the first recessed portion 48D engages with the radial ratchet protrusion 36B. The receiving member 48 has an axial inner end portion 48F. The axial inner end portion 48F extends from the first recessed portion 48D toward the axial center plane CP of the hub assembly 10 in the axial direction D1. The axial inner end portion 48F has a radial innermost surface 48G. The radial innermost surface 48G is located radially inward from the radial ratchet protrusion 36B in the radial direction D4.

[0122] In this application, the term "comprise" and its derivatives used herein are intended to be open terms, indicating the presence of the features, elements, components, groups, integers and / or steps, but not excluding the presence of other undescribed features, elements, components, groups, integers and / or steps. This concept also applies to words with similar meanings, such as the terms "have", "include" and their derivatives.

[0123] The terms “member,” “section,” “portion,” “part,” “element,” “body,” and “structure” when used in the singular can have the dual meaning of a single part or a plurality of parts.

[0124] Ordinal numbers such as “first” and “second” in the present application are merely identifications and do not have any other meanings, for example, a specific order, etc. In addition, for example, the term “first element” itself does not imply the existence of a “second element”, and the term “second element” itself does not imply the existence of a “first element”.

[0125] The term “a pair” as used herein can include a configuration in which a pair of elements have shapes or structures different from each other and a configuration in which a pair of elements have the same shape or structure as each other.

[0126] The terms "a" (or an), "one or more" and "at least one" can be used interchangeably herein.

[0127] The phrase “at least one of…” used in the present disclosure refers to “one or more” of the desired choices. For one example, if the number of choices is two, the phrase “at least one of…” used in the present disclosure means “only one single choice” or “both of the two choices”. For other examples, if the number of choices is equal to or greater than three, the phrase “at least one of…” used in the present disclosure means “only one single choice” or “any combination of equal to or greater than two choices”. For example, the phrase “at least one of A and B” covers (1) A alone, (2) B alone, and (3) both A and B. The phrase “at least one of A, B, and C” includes (1) A alone, (2) B alone, (3) C alone, (4) both A and B, (5) both B and C, (6) both A and C, and (7) all of A, B, and C. In other words, in the present disclosure, the phrase “at least one of A and B” does not mean “at least one A and at least one B”.

[0128] Finally, as used herein, terms of degree such as "substantially", "about" and "approximately" mean a reasonable amount of deviation of the modified term so that the end result is not significantly changed. All numerical values ​​described in this application can be interpreted as including terms such as "substantially", "about" and "approximately".

[0129] Obviously, many modifications and variations of the present invention are possible in light of the above teachings.It is therefore to be understood that within the scope of the appended claims, the present invention may be practiced otherwise than as specifically described herein.

Claims

1. A hub assembly for a human-driven vehicle, the hub assembly comprising: a hub axle having a central axis defining an axial direction and a circumferential direction; a hub shell rotatably mounted on the hub axle for rotation about the central axis, the hub shell comprising at least one first tooth having a first axial tooth end and a second axial tooth end opposite the first axial tooth end; a sprocket support body rotatably mounted on the hub axle for rotation about the central axis, the sprocket support body comprising a first spline; A first ratchet member, the first ratchet member comprising: at least one first ratchet tooth; and a second spline configured to engage with the first spline; A second ratchet member, the second ratchet member comprising: at least one second ratchet tooth configured to engage with the at least one first ratchet tooth; and at least one second tooth configured to engage with the at least one first tooth; A spacer, the spacer comprising: at least one base member extending in the circumferential direction; and at least one axial projection extending from the at least one base member in the axial direction, the at least one axial projection being at least partially disposed between the at least one first tooth and the at least one second tooth in the circumferential direction; The first axial tooth tip of the at least one first tooth is closer to the axial center plane of the hub assembly than the second axial tooth tip of the at least one first tooth; and The at least one base member of the spacer is disposed at a position closer to the first axial tooth end of the at least one first tooth than the second axial tooth end of the at least one first tooth.

2. The hub assembly according to claim 1, further comprising: A support member is configured to urge the spacer toward the second ratchet member in the axial direction.

3. The hub assembly according to claim 2, wherein The support member includes a radial protrusion configured to urge the spacer toward the second ratchet member in an axial direction.

4. The hub assembly according to claim 3, wherein The second ratchet member includes an engagement portion, The support member includes a first tubular portion extending in the axial direction from the radial projection toward the second ratchet member, and The first tubular portion of the support member is configured to engage with the engagement portion of the second ratchet member.

5. The hub assembly according to claim 4, wherein The first tubular portion of the support member is configured to engage with the engagement portion of the second ratchet member in a snap-fit ​​manner.

6. The hub assembly according to claim 3, wherein The support member comprises a second tubular portion which, in an assembled state of the hub assembly, extends in the axial direction from the radial projection towards the axial centre plane of the hub assembly.

7. The hub assembly according to claim 2, further comprising: A spacer biasing member is configured to bias the support member toward the second ratchet member in the axial direction.

8. A hub assembly for a human-driven vehicle, the hub assembly comprising: a hub axle having a central axis defining an axial direction and a radial direction; a hub shell rotatably mounted on the hub axle for rotation about the central axis, the hub shell comprising at least one first tooth; a sprocket support body rotatably mounted on the hub axle for rotation about the central axis, the sprocket support body comprising a first spline; A first ratchet member, the first ratchet member comprising: at least one first ratchet tooth; and a second spline configured to engage with the first spline; A second ratchet member, the second ratchet member comprising: at least one second ratchet tooth configured to engage with the at least one first ratchet tooth; and at least one second tooth configured to engage with the at least one first tooth; a biasing member disposed between the hub housing and the first ratchet member in the axial direction to bias the first ratchet member toward the second ratchet member in the axial direction; a receiving member disposed between the first ratchet member and the biasing member in the axial direction; The first ratchet member has a radial ratchet protrusion extending in the radial direction; and The radial ratchet protrusion of the first ratchet member is configured to limit displacement of the receiving member toward an axial center plane of the hub assembly in an assembled state of the hub assembly.

9. The hub assembly according to claim 8, wherein The first ratchet member has an axial ratchet projection extending in the axial direction.

10. The hub assembly according to claim 9, wherein The axial ratchet protrusion is configured to limit displacement of the receiving member in the radial direction away from the first ratchet member.

11. The hub assembly according to claim 8, wherein The receiving member includes a radial protrusion extending in the radial direction.

12. The hub assembly according to claim 11, wherein The radial protrusion of the receiving member is configured to engage with the radial ratchet protrusion of the first ratchet member.

13. The hub assembly according to claim 8, wherein The receiving member includes an axial protrusion extending in the axial direction.

14. The hub assembly according to claim 13, wherein The axial protrusion of the receiving member is configured to abut the first ratchet member.

15. The hub assembly according to claim 8, wherein The receiving member includes a first recessed portion recessed in the radial direction so that the first recessed portion engages with the radial ratchet protrusion.

16. The hub assembly according to claim 15, wherein The receiving member has an axially inner end portion extending in the axial direction from the first recessed portion toward the axial center plane of the hub assembly, and The axially inner end portion has a radially innermost surface located radially inwardly from the radial ratchet projection in the radial direction.

17. A hub assembly for a human-powered vehicle, the hub assembly comprising: a hub axle having a central axis defining an axial direction; a hub shell rotatably mounted on the hub axle for rotation about the central axis, the hub shell comprising at least one first tooth; a sprocket support body rotatably mounted on the hub axle to rotate about the central axis; as well as A sealing member, the sealing member comprising: a fixing portion configured to be mounted to one of the hub housing and the sprocket support body; a sealing portion extending in a first direction to slide relative to the sprocket support body; and A branch portion extends in a second direction different from the first direction so that a grease holding space is formed between the sealing portion and the branch portion.

18. The hub assembly according to claim 17, further comprising: A dust cover is configured to be mounted to the sprocket support body.

19. The hub assembly according to claim 18, wherein A labyrinth seal is formed between the sealing member and the dust cover.

20. The hub assembly according to claim 17, wherein The sprocket support body includes a first spline, and The hub assembly also includes: A first ratchet member, the first ratchet member comprising: at least one first ratchet tooth; and a second spline configured to engage with the first spline; A second ratchet member, the second ratchet member comprising: at least one second ratchet tooth configured to engage with the at least one first ratchet tooth; and at least one second tooth configured to engage with the at least one first tooth; and A biasing member is provided between the hub housing and the first ratchet member in the axial direction to bias the first ratchet teeth member toward the second ratchet teeth member in the axial direction.

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