Bicycle rim brake

Patent metadata

Field	Value
Publication number	US-9821880-B2
Application number	US-201514820575-A
Country	US
Kind code	B2
Filing date	Aug 7, 2015
Priority date	Aug 7, 2015
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

A bicycle rim brake comprises a first shaft, a second shaft, a first brake arm, a second brake arm, and a reinforcing member. The first shaft includes a first fixed end part fixedly provided with respect to a bicycle body. The second shaft includes a second fixed end part fixedly provided with respect to the bicycle body. The first brake arm is pivotally provided on the first shaft around a first pivot axis. The first brake arm has an opposite surface opposite to the first fixed end part. The second brake arm is pivotally provided on the second shaft around a second pivot axis. The reinforcing member couples the first shaft to the second shaft. The reinforcing member is provided such that the first brake arm is at least partially arranged farther from the first fixed end part than the reinforcing member.

First claim

What is claimed is:

1. A bicycle rim brake comprising:
a first shaft defining a first pivot axis, the first shaft including a first fixed end part fixedly provided with respect to a bicycle body;
a second shaft defining a second pivot axis, the second shaft including a second fixed end part fixedly provided with respect to the bicycle body;
a first brake arm pivotally provided on the first shaft around the first pivot axis;
a second brake arm pivotally provided on the second shaft around the second pivot axis; and
a reinforcing member joining the first shaft to the second shaft, the reinforcing member being provided such that the first brake arm is at least partially arranged farther from the first fixed end part than the reinforcing member, the reinforcing member being a separate member from the first shaft and the second shaft, the reinforcing member being provided between the first brake arm and the second brake arm in an axial direction parallel to the first pivot axis.

2. The bicycle rim brake according to claim 1 , wherein
the first brake arm includes a groove, and
the reinforcing member includes a first coupling part arranged in the groove.

3. The bicycle rim brake according to claim 1 , wherein
the reinforcing member is provided such that the second brake arm is at least partially arranged closer to the second fixed end part than the reinforcing member.

4. The bicycle rim brake according to claim 3 , wherein
the second shaft includes
a second head part, and
a second supporting part extending between the second fixed end part and the second head part so as to pivotally support the second brake arm, and

the reinforcing member includes a second coupling part arranged between the second brake arm and the second head part.

5. The bicycle rim brake according to claim 4 , wherein
the second brake arm includes a recess, and
the second coupling part and the second head part are arranged in the recess.

6. The bicycle rim brake according to claim 3 , wherein
the first brake arm and the second brake arm are configured such that a space is provided between the first brake arm and the second brake arm when viewed from a perpendicular direction perpendicular to at least one of the first pivot axis and the second pivot axis, and
the reinforcing member is at least partially arranged in the space.

7. The bicycle rim brake according to claim 1 , wherein
the first brake arm includes an offset part arranged farther from the bicycle body than the second brake arm when viewed from a perpendicular direction perpendicular to at least one of the first pivot axis and the second pivot axis, and
the reinforcing member is arranged between the offset part of the first brake arm and the second brake arm.

8. The bicycle rim brake according to claim 1 , wherein
the first pivot axis and the second pivot axis are substantially parallel to each other.

9. A bicycle rim brake comprising:
a first shaft defining a first pivot axis, the first shaft including a first fixed end part fixedly provided with respect to a bicycle body;
a second shaft defining a second pivot axis, the second shaft including a second fixed end part fixedly provided with respect to the bicycle body;
a first brake arm pivotally provided on the first shaft around the first pivot axis;
a second brake arm pivotally provided on the second shaft around the second pivot axis;
a reinforcing member joining the first shaft to the second shaft, the reinforcing member being provided such that the first brake arm is at least partially arranged farther from the first fixed end part than the reinforcing member; and
a base member,
the first shaft and the second shaft being provided on the base member.

10. The bicycle rim brake according to claim 9 , wherein
the base member includes a mounting shaft, the mounting shaft being arranged apart from the first shaft and the second shaft.

11. The bicycle rim brake according to claim 10 , wherein
the mounting shaft is arranged such that a first distance between the mounting shaft and the first shaft is substantially equal to a second distance between the mounting shaft and the second shaft when viewed from a parallel direction parallel to the mounting shaft.

12. The bicycle rim brake according to claim 10 , wherein
the first brake arm includes a first mounting part to mount a first friction member to the first brake arm,
the second brake arm includes a second mounting part to mount a second friction member to the second brake arm,
the mounting shaft is farther from the first mounting part than the first shaft, and
the mounting shaft is farther from the second mounting part than the second shaft.

13. The bicycle rim brake according to claim 1 , wherein
the reinforcing member includes
a first coupling part including a first opening,
a second coupling part including a second opening, and
an intermediate part provided between the first coupling part and the second coupling part,

the first shaft extends through the first opening, and
the second shaft extends through the second opening.

14. The bicycle rim brake according to claim 13 , wherein
the second coupling part is offset from a first plane on which the first coupling part is arranged.

15. The bicycle rim brake according to claim 14 , wherein
the intermediate part is arranged on the first plane.

16. The bicycle rim brake according to claim 1 , wherein
the first brake arm includes a wire attachment part to attach an inner wire of a control cable to the first brake arm, and
the second brake arm includes an outer-casing attachment part to attach an outer casing of the control cable to the second brake arm.

17. A bicycle rim brake comprising:
a base member including a mounting shaft;
a first shaft provided on the base member apart from the mounting shaft;
a second shaft provided on the base member apart from the mounting shaft and the first shaft;
a first brake arm pivotally provided on the first shaft, the first brake arm including a first contact part;
a second brake arm pivotally provided on the second shaft, the second brake arm including a second contact part being in contact with the first contact part; and
a reinforcing member joining the first shaft to the second shaft,
the first shaft including a first fixed end part fixed to the base member,
the first brake arm having an opposite surface opposite to the first fixed end part, and
the reinforcing member being at least partially arranged between the first fixed end part of the first shaft and the opposite surface of the first brake arm.

18. A bicycle rim brake comprising:
a base member including a mounting shaft;
a first shaft provided on the base member apart from the mounting shaft;
a second shaft provided on the base member apart from the mounting shaft and the first shaft;
a first brake arm pivotally provided on the first shaft, the first brake arm including a first contact part;
a second brake arm pivotally provided on the second shaft, the second brake arm including a second contact part being in contact with the first contact part; and
a reinforcing member joining the first shaft to the second shaft,
the first shaft including a first fixed end part fixed to the base member, and
the reinforcing member being provided such that the first brake arm is at least partially arranged farther from the first fixed end part than the reinforcing member.

19. A bicycle rim brake comprising:
a first shaft defining a first pivot axis, the first shaft including a first fixe

Assignees

• Shimano Kk

Inventors

• Kakimoto Tetsuya
• Matsushita Tatsuya
• Nakakura Masahiro
• Hirotomi Shinya

Classifications

• B62L1/005

  constructional features of brake elements, e.g. fastening of brake blocks in their holders · CPC title

• B62L1/16 Primary

  the axes being located intermediate the ends of the levers · CPC title