Actuator device for a bicycle gearshift

A shifting mechanism and actuating device technology, which is applied to bicycle gear shifting mechanisms, transmission devices, bicycle accessories, etc., and can solve problems such as the deterioration of the connection between the motor and the support and the deterioration of the actuation accuracy of the transmission

Inactive Publication Date: 2009-07-22
CAMPAGNOLO SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in hot and cold environments, this effect will be highlighted, and the coupling between the motor and the support will be further deteriorated due to the different expansion coefficients of the materials that make up the motor housing and the support.
The undesired axial displacement of the electric motor relative to the support leads to a corresponding displacement of the drive shaft relative to the transmission components, thus degrading the actuation precision of the transmission
Undesirable axial displacement can also be caused by accidental bumps into the transmission

Method used

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  • Actuator device for a bicycle gearshift
  • Actuator device for a bicycle gearshift
  • Actuator device for a bicycle gearshift

Examples

Experimental program
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Embodiment Construction

[0045] In these figures, an actuating device for a bicycle shifting mechanism according to the invention is indicated generally at 1 . In all figures, structurally or functionally identical elements are designated with the same reference numerals. Gear shifting mechanisms, especially bicycles, are not part of the present invention and are therefore not described in detail.

[0046] The actuating device 1 comprises an articulated quadrilateral mechanism 10 comprising four links: a first link 101 integrally fixed on the bicycle frame, in a position opposite to the first link 101 in the articulated quadrilateral mechanism 10 And be fixed on the second connecting rod 102, the third connecting rod 103 and the fourth connecting rod 104 on the transmission support member of the shifting mechanism. Links 101 , 102 , 103 and 104 are hinged to each other along four pin axes 111 , 112 , 113 and 114 by four pin members 121 , 122 , 123 and 124 respectively, thereby forming a hinged quadri...

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PUM

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Abstract

An actuator device (1) for a bicycle gearshift, comprising: an articulated quadrilateral mechanism (10) intended to be integrally fixed to a bicycle frame and to a derailleur of the gearshift, a motor member (2) acting on the articulated quadrilateral mechanism (10) to deform the articulated quadrilateral (10), thus causing the displacement of the derailleur and a support element (5) for the motor member (2) associated with the articulated quadrilateral (10). According to the invention, one of the motor member (2) and the support element (5) comprises at least one jutting element (8) and the other of the motor member (2) and the support element (5) comprises at least one seat (6) adapted to receive said jutting element (8). In such a way the motor member (2) is associated with the support element (5) so as to prevent mutual translations in the axial direction in any operating or climatic condition. <IMAGE>

Description

technical field [0001] The present invention relates to an actuating device for a bicycle gearshift, ie to a mechanical device for displacing a chain between different gears for the purpose of displacing the derailleur and thereby driving the chain itself. Background technique [0002] Throughout the present specification and subsequent claims, the shifting mechanism referred to may be a rear shifting mechanism that drives a chain coupled between different sprockets in the rear wheel of a bicycle, or it may be a front The derailleur, the front derailleur, drives the chain between the different crown gears coupled to the pedal cranks. [0003] Typically, the actuating device of the shift mechanism comprises an articulated quadrilateral mechanism integrally fixed to the bicycle frame and the shifter of the shifter; deformation of the hinged quadrilateral causes the shifter to displace, thereby effecting the shifting. [0004] The above-mentioned deformation of the articulated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62M25/08B62M9/122B62M25/02F16H9/00F16H59/00
CPCB62M25/08B62M9/122Y10T403/7007
Inventor 马里奥·梅焦兰
Owner CAMPAGNOLO SRL
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