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Bicycle derailleur

A technology for derailleurs and bicycles, which is applied to vehicle components, vehicle gearboxes, chain/belt transmissions, etc., and can solve problems such as the inability to freely select the inner cable stroke

Active Publication Date: 2010-07-28
SHIMANO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This means that this inner cable travel must be pulled in the shifter, and the inner cable travel of a specific cable actuated rear derailleur cannot be freely selected when designing the shifter

Method used

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  • Bicycle derailleur
  • Bicycle derailleur
  • Bicycle derailleur

Examples

Experimental program
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Embodiment Construction

[0022] Selected embodiments of the present invention will be explained with reference to the drawings. It will be apparent to those skilled in the art from this disclosure that the following detailed description of the embodiments of the invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

[0023] First, see figure 1 , which illustrates the rear portion of the bicycle frame 10 to which the bicycle rear derailleur 12 is mounted according to the first embodiment. The rear fork or triangle of bicycle frame 10 has a rear gear assembly (freewheel) with a plurality of rear gears or sprockets RS rotatably coupled thereto via a rear hub (not shown). The chain C is received on the rear sprocket RS and is operably coupled to a set of front gears or sprockets (not shown) in a conventional manner for transmitting desired torque to the rear wheel of the bicycle in a conventional manner. Th...

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PUM

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Abstract

A bicycle derailleur is basically provided with a base member, a movable member, a coupling member and a cable actuation ratio control mechanism. The movable member supports a chain guide. The coupling member movably couples the movable member to the base member. The cable actuation ratio control mechanism includes first and second link members. The first link member has a pivoting portion, a cable connection portion and a second link coupling portion. The pivoting portion is pivotally mounted to one of the coupling member and the base member. The cable connection portion is located on one side of the pivoting portion, while the second link coupling portion is located on the other side of the pivoting portion. The second link member is coupled to the first link member at the second link coupling portion and pivotally mounted to one of the movable member and the coupling member.

Description

technical field [0001] The present invention generally relates to bicycle derailleurs. More particularly, the present invention relates to a cable actuation ratio control mechanism for a bicycle derailleur, especially a bicycle rear derailleur. Background technique [0002] Cycling is increasingly becoming a popular form of recreation and transportation. Moreover, cycling has become a very popular competitive sport for both amateurs and professionals. Whether the bicycle is used for recreation, transportation or competition, the bicycle industry is constantly improving the various components of the bicycle. One device that has been extensively redesigned is the bicycle derailleur. [0003] Typically, a derailleur has a base member and a movable member, and the chain guide is movably coupled to the base member via a linkage assembly (eg, a link member). The base member is typically coupled to the rear triangle of the bicycle frame with bolts that form a B-axis to provide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M9/10
CPCB62M9/127B62M9/1242
Inventor 高地毅児玉充博
Owner SHIMANO INC