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Bicycle rear derailleur

A technology for rear derailleurs and bicycles, applied in vehicle parts, vehicle gearboxes, chain/belt drives, etc., can solve problems such as difficult handling, inconvenient installation and disassembly, and affecting shifting performance.

Inactive Publication Date: 2008-02-06
SHIMANO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While working relatively well, installing and removing (if necessary) such pivot pins is inconvenient and / or cumbersome
In particular, some pivot pins use very small parts that are difficult to handle and can get lost during assembly and / or disassembly
Also, with prior art rear derailleurs, the chain guide tends to wobble slightly due to vibration, especially when driving over uneven terrain
Especially when driving on uneven terrain, undesired wobble of the chain guide causes chain jump, adversely affecting shifting performance

Method used

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  • Bicycle rear derailleur
  • Bicycle rear derailleur
  • Bicycle rear derailleur

Examples

Experimental program
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no. 2 example

[0060] Referring now to FIGS. 12-14, a portion of a rear derailleur 12 having a modified cushioning member 2D mounted thereon in accordance with a second embodiment of the present invention will now be described. The cushioning member 2D of this second embodiment is designed to be used on the rear derailleur 12 of the first embodiment instead of the cushioning member D of the first embodiment.

[0061] In view of the similarity of the first and second embodiments, parts of the second embodiment that are identical to parts of the first embodiment are given the same reference numerals as parts of the first embodiment. Likewise, components of the second embodiment that are functionally identical and / or substantially identical to components of the first embodiment are given the same reference numerals, but with the addition of "200". In any case, the description of the components of the second embodiment that are substantially the same as those of the first embodiment may be omitt...

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PUM

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Abstract

A bicycle rear derailleur includes a base member, a movable member and a linkage assembly. The base member is configured to be attached to a bicycle frame and includes a first pivot member. The movable member includes a second pivot member, a support portion and a chain guide coupled to the second pivot member. The linkage assembly is coupled between the base member and the support portion of the movable member to move the chain guide between a retracted position and an extended position. The linkage assembly includes at least one third pivot member interconnecting a link to one of the base member and the movable member. At least one of the first, second and third pivot members includes a resilient fastening end.

Description

technical field [0001] The present invention generally relates to a bicycle rear derailleur. More particularly, the present invention relates to a bicycle rear derailleur having at least one pivot member with a resilient fastening end. Background technique [0002] Cycling is becoming an increasingly wider form of recreation as well as a means of transportation. Furthermore, cycling has become a very wide range of amateur and professional competitive sports. Whether the bicycle is used for recreation, transportation, or competition, the bicycle industry is constantly improving various components of the bicycle. One component that has been extensively redesigned is the bike's rear derailleur. [0003] Typically, a rear derailleur has a bottom member and a movable member with a chain guide movably connected to the bottom member via a linkage assembly. Bottom members are typically attached to the rear triangle of the bicycle frame using bolts so that rotation around the bol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M9/12B62M9/1242
CPCB62M9/1242
Inventor 大濑户伸也
Owner SHIMANO INC