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Bicycle gearshift

A technology for transmissions and bicycles, applied in the direction of vehicle gearboxes, vehicle components, chain/belt drives, etc., can solve problems such as endangering the correct operation of the locking device, complex structure and structure, etc., and achieve a better structure.

Active Publication Date: 2018-01-30
CAMPAGNOLO SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to complex construction and structure
Furthermore, the two cavities exposed to the outside can be containers of dirt or water, risking the correct operation of the locking device

Method used

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  • Bicycle gearshift
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] exist Figure 1-5 In , reference numeral 10 indicates a bicycle derailleur, in particular a rear derailleur, according to a first preferred embodiment of the present invention.

[0045] Rear derailleur 10 is installed on bicycle frame 12 ( figure 1 with 2 ) and move a chain (not shown) between the different sprockets 14 of the sprocket assembly 16 associated with the rear wheel (not shown) of the bicycle.

[0046] Movement of the chain is actuated by movement of the derailleur 18 (or chain guide) associated with the actuation link 20 .

[0047] The transmission 10 can be mechanically actuated or motorized. The figures show, as a non-limiting example, a motorized transmission in which the movement of the derailleur 18 is performed by using a drive member 22 suitably driven, usually electrically. Once actuated, the actuation link 20 deforms to move the derailleur 18 .

[0048] The actuation link 20 is an articulated quadrilateral link, preferably in the form of an ar...

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PUM

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Abstract

The invention relates to a bicycle gearshift (10), comprising an actuation linkage (20) and a connection member (30). The actuation linkage (20) comprises a first body (24), a second body (26) and a pair of articulation rods (28). The first body (24) is connected to the connection member. The connection member is configured to be fixed to the frame. A locking device (32) acting between said connection member and said first body is selectively actuatable to shift between a first operative configuration and a second operative configuration. The locking device (32) comprises a pin (34) comprisingan actuation end portion (34a) to be actuated in order to command the shifting from said first operative configuration to said second operative configuration, and an opposite locking end portion (34b) that, when said locking device (32) is in said second operative configuration, is in abutment against said connection member (30). When said locking device (32) is in said second operative configuration, said actuation end portion (34a) is arranged at one side of said connection member (30) and said locking end portion (34b) is arranged at the other side of said connection member (30).

Description

technical field [0001] The invention relates to a bicycle transmission, preferably a racing bicycle transmission. Background technique [0002] In the context of the present invention, the derailleur that is particularly concerned is the rear derailleur that moves the chain between the different sprockets of the sprocket assembly associated with the rear wheel of the bicycle. [0003] Movement of the chain is typically actuated by movement of a derailleur associated with an actuation link associated with the bicycle frame at the rear wheel. [0004] Bicycle derailleurs can be actuated mechanically or motorized. In the first case, the movement of the derailleur is carried out by using sheathed wires (so-called Bowden wires). In the second case, the movement of the derailleur is performed by using suitably driven, usually electrically driven, drive members. Action exerted by the sheath wire or drive member on the actuation link causes the actuation link to deform, thus caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M9/126B62M9/121
CPCB62M9/128B62M9/1244B62M9/125
Inventor 达维德·贝纳代尔
Owner CAMPAGNOLO SRL