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bicycle derailleur

A technology for transmissions and bicycles, applied to vehicle gearboxes, vehicle components, chain/belt transmissions, etc., can solve problems that endanger the correct operation of the locking device, complex structure and structure, etc., and achieve a more structural effect

Active Publication Date: 2020-12-15
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 derailleur
  • bicycle derailleur
  • bicycle derailleur

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 transmission (10) comprising an actuation link (20) and a connecting member (30). The actuation link includes a first body (24), a second body (26), and a pair of hinged rods (28). The first body is connected to the connection member. The connecting member is fixed to the frame. A locking device (32) acting between the connecting member and the first body is switchable between a first operative configuration and a second operative configuration. The locking device (32) comprises a pin (34) comprising an actuating end (34a) and an opposite locking end (34b), the actuating end (34a) being actuated to command a first The operative configuration is converted to the second operative configuration, and the locking end (34b) abuts against the connecting member (30) when the locking device (32) is in the second operative configuration. When the locking device (32) is in the second operative configuration, the actuating end (34a) is arranged on one side of the connecting member (30) and the locking end (34b) is arranged on the other side of the connecting 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 Patents(China)
IPC IPC(8): B62M9/126B62M9/121
CPCB62M9/128B62M9/1244B62M9/125
Inventor 达维德·贝纳代尔
Owner CAMPAGNOLO SRL