Rear deraileur of bicycle

Patent metadata

Field	Value
Publication number	US-11427282-B2
Application number	US-202016801948-A
Country	US
Kind code	B2
Filing date	Feb 26, 2020
Priority date	Nov 6, 2019
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

A rear derailleur of a bicycle includes a fixing portion connected to a frame of the bicycle, a linkage assembly, a moving portion, a chain guide assembly, and a driving assembly. The linkage assembly is pivotally connected to the fixing portion. The moving portion is pivotally connected to the linkage assembly. The chain guide assembly is connected to the moving portion. The driving assembly includes a motor and a driving gear assembly connected to the linkage assembly. The motor includes an output shaft for driving the driving gear assembly. The output shaft of the motor drives the linkage assembly to pivot via the driving gear assembly, thereby to drive the moving portion and the chain guide assembly to move. A pivot shaft and a detachable battery module are disposed on the moving portion. The chain guide assembly is pivotally connected to the pivot shaft. The battery module provides an electric power to the motor.

First claim

What is claimed is:

1. A rear derailleur of a bicycle, comprising:
a fixing portion which is adapted to be connected to a frame of the bicycle;
a linkage assembly pivotally connected to the fixing portion;
a moving portion pivotally connected to the linkage assembly;
a chain guide assembly connected to the moving portion; and
a driving assembly comprising a motor and a driving gear assembly, wherein the motor comprises an output shaft adapted to drive the driving gear assembly; the driving gear assembly is connected to the linkage assembly; the output shaft of the motor drives the linkage assembly to pivot via the driving gear assembly, thereby to drive the moving portion and the chain guide assembly to move;
wherein a pivot shaft and a detachable battery module are disposed on the moving portion; the chain guide assembly is pivotally connected to the pivot shaft; the detachable battery module is adapted to provide an electric power to the motor.

2. The rear derailleur of claim 1 , wherein the moving portion comprises a housing; the housing has a first receiving space and a second receiving space; the pivot shaft is disposed in the first receiving space; the detachable battery module is disposed in the second receiving space.

3. The rear derailleur of claim 2 , wherein the housing has an outer surface located away from the chain guide assembly and an inner surface; the second receiving space is located between the outer surface and the inner surface; the inner surface and the chain guide assembly are spaced from each other by a distance.

4. The rear derailleur of claim 2 , wherein the second receiving space is located on an outer periphery of a wall of the first receiving space.

5. The rear derailleur of claim 4 , wherein a minimum thickness between a wall of the second receiving space and the wall of the first receiving space is smaller than or equal to 5 mm.

6. The rear derailleur of claim 2 , wherein the housing comprises a body and a cover; the body has the first receiving space and at least a part of the second receiving space; a side wall of the body has an opening communicating with the second receiving space; the cover is engaged with the side wall of the body and close the opening.

7. The rear derailleur of claim 6 , wherein the opening is disposed on the side wall of the body that faces a direction away from either the linkage assembly or the chain guide assembly.

8. The rear derailleur of claim 6 , wherein the cover has a space which constitutes a part of the second receiving space.

9. The rear derailleur of claim 2 , wherein the second receiving space is located below the pivot shaft.

10. The rear derailleur of claim 2 , wherein the housing has a cord hole communicating the second receiving space and an outside of the housing; the detachable battery module comprises a battery box, at least one battery, and a power cord; the at least one battery is disposed inside the battery box and transmits the electric power via the power cord; the power cord passes through the cord hole.

11. The rear derailleur of claim 10 , wherein the battery box has a perforation communicating inside and outside the battery box; the perforation is disposed corresponding to the cord hole; the power cord respectively passes through the perforation and the cord hole.

12. The rear derailleur of claim 1 , further comprising a coil and a wireless charging circuit, wherein the wireless charging circuit is electrically connected to the coil; the detachable battery module comprises at least one rechargeable battery electrically connected to the wireless charging circuit; the coil is disposed on one of the fixing portion, the moving portion, and the linkage assembly.

13. The rear derailleur of claim 12 , wherein the coil has a receiving surface adapted to receive an external charging power; the receiving surface faces a direction away from the chain guide assembly.

Assignees

• Tien Hsin Industries Co Ltd

Inventors

• Sala Alfredo

Classifications

• B62M2009/12406

  Rear derailleur comprising a rigid pivoting arm · CPC title

• B62M9/122 Primary

  electrically or fluid actuated; Controls thereof · CPC title

• H02J50/10

  using inductive coupling · CPC title

• B62M9/128

  Accessories, e.g. protectors · CPC title

• B62M9/124

  Mechanisms for shifting laterally · CPC title