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DE-102015017583-B4 - bicycle hub arrangement

DE102015017583B4DE 102015017583 B4DE102015017583 B4DE 102015017583B4DE-102015017583-B4

Abstract

A bicycle hub assembly comprises a hub axle, a hub shell, and a sprocket support link. The sprocket support link includes a tubular section and a first tooth. The tubular section includes an outer peripheral surface and a mounting section, which is provided only radially inside the outer peripheral surface. The first tooth is designed to be attached to the mounting section of the tubular section. The first tooth comprises a first surface and a second surface. The first surface is designed to face a mounting section of a bicycle sprocket in one circumferential direction of the sprocket support link. The second surface is opposite the first surface in the circumferential direction. The second surface is designed to face the mounting section of the bicycle sprocket in the circumferential direction.

Inventors

  • Kazuki Koshiyama

Assignees

  • SHIMANO INC.

Dates

Publication Date
20260513
Application Date
20150422
Priority Date
20140502

Claims (17)

  1. Bicycle hub assembly (10) comprising: a hub shaft (12); a hub shell (14) rotatable relative to the hub shaft (12) about an axis of rotation (A1); and a sprocket support link (16) rotatable relative to the hub shaft (12) about the axis of rotation (A1) and configured to support a bicycle sprocket (SP) and to be integrally rotatable with the sprocket support link (16) about the axis of rotation (A1), wherein the sprocket support link (16) comprises: a tubular section (18) including an outer circumferential surface (22) and a mounting section (24) provided only radially internal to the outer circumferential surface (22), wherein the tubular section (18) is made of a first material; and a first tooth (20) configured to be attached to the mounting section (24) of the tubular section (18) and which is made of a second material different from the first material, wherein the first tooth (20) comprises: a first surface (36) configured to face a mounting section (MP) of the bicycle chainring (SP) in a circumferential direction (D2) of the chainring support link (16); and a second surface (38) opposite the first surface (36) in the circumferential direction (D2), wherein the second surface (38) is configured to face the mounting section (MP) of the bicycle chainring (SP) in the circumferential direction (D2); wherein the fastening section (24) includes a plurality of recesses (426, 427) provided on the outer peripheral surface (22) of the tubular section (18), and the first tooth (20) includes a tooth body (40) comprising the first surface (36) and the second surface (38), wherein the tooth body (40) is configured to be provided on the outer peripheral surface (22) of the tubular section (18) in a state in which the first tooth (20) is attached to the tubular section (18) via the fastening section (24), and a plurality of projections (442, 443) projecting from the tooth body (40) and configured to be arranged in the plurality of recesses (426, 427).
  2. bicycle hub arrangement (10) according Claim 1 , wherein the fastening section (24) includes a recess (26) which is provided on the outer circumferential surface (22) of the tubular section (18), and the first tooth (20) includes a tooth body (40) which includes the first surface (36) and the second surface (38), wherein the tooth body (40) is configured to be provided on the outer circumferential surface (22) of the tubular section (18) in a state in which the first tooth (20) is attached to the tubular section (18) via the fastening section (24), and a projection (42) which projects from the tooth body (40) and is configured to be arranged in the recess (26).
  3. bicycle hub arrangement (10) according Claim 2 , in which the recess (26) extends in an axial direction (D1) parallel to the axis of rotation (A1) and/or has a maximum circumferential length (L32) such that the projection (42) is press-fitted into the recess (26).
  4. bicycle hub arrangement (10) according Claim 2 or 3 , in which the first tooth (20) has a longitudinal axis (A3) parallel to the axial direction (D1), in a state in which the first tooth (20) is attached to the tubular section (18) via the recess (26) and the projection (42) and the tooth body (40) and the projection (42) extend along the longitudinal axis (A3).
  5. bicycle hub arrangement (10) according Claim 4 , in which the tooth body (40) has a first maximum axial length (L11) defined along the longitudinal axis (A3), the projection (42) has a second maximum axial length (L12) defined along the longitudinal axis (A3), and the second maximum axial length (L12) is shorter than the first maximum axial length (L11).
  6. bicycle hub arrangement (10) according to one of the Claims 2 until 5 , in which the tooth body (40) has a first maximum circumferential length (L21) defined in the circumferential direction (D2), in a state in which the first tooth (20) is attached to the tubular section (18) via the recess (26) and the projection (42), the projection (42) has a second maximum circumferential length (L22) defined in the circumferential direction (D2), in a state in which the first tooth (20) is attached to the tubular section (18) via the recess (26) and the projection (42), and the second maximum circumferential length (L22) is shorter than or is equal to the first maximum circumference length (L21).
  7. bicycle hub arrangement (10) according to one of the Claims 2 until 6 , in which the fastening section (24) includes a first inner surface (44) and a second inner surface (46) spaced apart from the first inner surface (44) in the circumferential direction (D2) and the projection (42) includes a first circumferential end surface (48) which is designed to face the first inner surface (44) in the circumferential direction (D2) and a second circumferential end surface (50) which is designed to face the second inner surface (46) in the circumferential direction (D2).
  8. bicycle hub arrangement (10) according Claim 7 , in which the first circumferential end surface (48) of the projection (42) is arranged in a plane (P1) defined by the first surface (36) of the tooth body (40), and the second circumferential end surface (50) of the projection (42) is arranged in a plane (P2) defined by the second surface (38) of the tooth body (40).
  9. bicycle hub arrangement (10) according to one of the Claims 2 until 8 , wherein the tooth body (40) includes an inner circumferential surface (341; 541; 641) which faces the outer circumferential surface (22) of the sprocket support link (16), the fastening section (24) includes a first inner surface (44), the projection (42) includes a first circumferential end surface (48) which is configured to face the first inner surface (44) in the circumferential direction (D2), and the inner peripheral surface (341; 541; 641) of the tooth body (40) and the first circumferential end surface (48) of the projection (42) are positioned in a downstream side of the projection (42) in a drive rotation direction (D21) of the sprocket support link (16), in particular the inner peripheral surface (341; 541; 641) of the tooth body (40) is substantially perpendicular to the first End circumferential surface (48) of the projection (42).
  10. bicycle hub arrangement (10) according to one of the Claims 1 until 9 , in which the chain wheel support link (16) includes a second tooth (32) which projects radially outwards from the outer peripheral surface (22) of the tubular section (18) and is made of a first material, and the tooth body (40) has a shape which is essentially the same as a shape of the second tooth (32) in an axial area (AR) in which the mounting section (MP) of the bicycle chain wheel (SP) engages with the tooth body (40) and the second tooth (32).
  11. Bicycle hub arrangement according to one of the Claims 1 until 10 , in which the first tooth has a longitudinal axis which is parallel to the axial direction, in a state in which the first tooth is attached to the tubular section via the fastening section, and the first tooth a) has at least partially a substantially T-shaped cross-section along a plane which is perpendicular to the longitudinal axis, and/or b) has at least partially a substantially L-shaped cross-section along a plane which is perpendicular to the longitudinal axis.
  12. bicycle hub arrangement (10) according to one of the Claims 1 until 11 , further comprising: a locking element (28) with which the first tooth (20) is secured to the attachment section (24).
  13. bicycle hub arrangement (10) according Claim 12 , in which the fastening section (24) includes a threaded hole (30) and the locking element (28) includes an external threaded part (28a) which is designed to be screwed into the threaded hole (30).
  14. bicycle hub arrangement (10) according to one of the Claims 1 until 13 , in which the first material has a lower hardness than the second material.
  15. bicycle hub arrangement (10) according to one of the Claims 1 until 14 , in which the first material comprises an aluminum alloy and the second material comprises an iron alloy.
  16. bicycle hub arrangement (10) according to one of the Claims 1 until 15 , wherein the sprocket support link (16) includes a second tooth (32) which projects radially outwards from the outer peripheral surface (22) of the tubular section (18) and is made of a first material, and a third tooth (34) which projects radially outwards from the outer peripheral surface (22) of the tubular section (18) and is made of the first material, wherein the third tooth (34) is spaced apart from the second tooth (32) in the circumferential direction (D2), and the fastening section (24) is provided between the second tooth (32) and the third tooth (34) in the circumferential direction (D2).
  17. bicycle hub arrangement (10) according Claim 16 , in which a distance defined between the fastening section (24) and the second tooth (32) in the circumferential direction (D2) is essentially equal to a distance defined between the fastening section (24) and the third tooth (34) in the circumferential direction (D2).

Description

The present invention relates to a bicycle hub assembly. Cycling has become an increasingly popular form of recreation and transportation. It has also become a very popular competitive sport for both amateurs and professionals. Whether the bicycle is used for recreation, transportation, or competition, the bicycle industry has constantly improved the various components of a bicycle. One bicycle component that has been extensively redesigned is the bicycle hub assembly. US 2013 / 0 076 112 A1 describes a protective unit for a drive bushing of a hub comprising a hub with a drive bushing connected to one end thereof, wherein the drive bushing has several ribs extending axially on its outer surface. US 2005 / 0 009 654 A1 describes a rear wheel hub which has a hub shaft and a hub outer gear configured so that it can be mounted freely rotatable on the hub shaft. CN 2 01 646 251 U describes a ratchet sleeve construction for bicycles, comprising a sleeve seat, at least one first transmission part and at least one second transmission part. DE 10 2012 109 329 A1 describes a freewheel assembly for a bicycle, essentially comprising a freewheel body and a plurality of reinforcing ribs. WO 2014 / 200 352 A1 describes a bicycle hub consisting of a hollow cylindrical body which is provided with external teeth whose teeth extend in an axial direction. The standard DIN 6885-1 standardizes keyways. DE 20 2010 001 830 U1 describes a bicycle hub, in particular a tube part of a rear bicycle hub, which carries the force exerted when the flywheels rotate. The standard DIN ISO 14 standardizes splined shafts and splined hubs. According to a first aspect of the present invention, a bicycle hub assembly comprises a hub shaft, a hub shell, and a sprocket support link. The hub shell is rotatable relative to the hub shaft about one direction of rotation. The sprocket support link is rotatable relative to the hub shaft about the axis of rotation and is configured to support a bicycle sprocket so that the sprocket is integrally rotatable with the sprocket support link about the axis of rotation. The sprocket support link comprises a tubular section and a first tooth. The tubular section includes an outer peripheral surface and a mounting section, which is provided only radially inside the outer peripheral surface. The tubular section is made of a first material. The first tooth is configured to be attached to the mounting section of the tubular section and is made of a second material, different from the first material. The first tooth comprises a first surface and a second surface. The first surface is configured to face a mounting section of the bicycle sprocket in a circumferential direction of the sprocket support link. The second surface is oriented circumferentially opposite to the first surface. The second surface is designed to face the mounting section of the bicycle chainring in the circumferential direction. The mounting section includes a plurality of recesses provided on the outer peripheral surface of the tubular section. The first tooth comprises a tooth body and a plurality of projections. The tooth body includes the first surface and the second surface. The tooth body is designed to be positioned on the outer peripheral surface of the tubular section in a state where the first tooth is attached to the tubular section via the mounting section. The plurality of projections extends from the tooth body and is designed to be arranged within the plurality of recesses. Preferably, the bicycle hub assembly is configured such that the mounting section includes a recess provided on the outer peripheral surface of the tubular section. The first tooth preferably comprises a tooth body and a projection. The tooth body preferably includes the first surface and the second surface. The tooth body can be configured to be provided on the outer peripheral surface of the tubular section in a state where the first tooth is attached to the tubular section via the mounting section. The projection can extend from the tooth body and can be configured to be arranged in the recess. Preferably, the bicycle hub arrangement is designed such that the recess is located in extends in an axial direction parallel to the axis of rotation. Preferably, the bicycle hub arrangement is designed such that the recess has a maximum circumferential length, such that the projection is press-fitted into the recess. Preferably, the bicycle hub assembly is designed such that the chainring support link includes a second tooth which projects radially outwards from the outer peripheral surface of the tubular section and is made of the first material. The tooth body preferably has a shape that is essentially the same as the shape of the second tooth in an axial area where the mounting section of the bicycle chainring engages with the tooth body and the second tooth. Preferably, the bicycle hub assembly is designed such that the first tooth has a longitudinal axis parallel t