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Bicycle derailleur

A derailleur, bicycle technology, applied in vehicle components, vehicle gearboxes, chain/belt drives, etc., can solve problems such as interference with the rear wheel of a bicycle

Active Publication Date: 2018-09-07
CAMPAGNOLO SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The applicant has noted that in some cases the control wire (or the sheath into which it is inserted) may interfere with the rear wheel of the bicycle, or other parts of the bicycle such as the derailleur itself

Method used

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  • Bicycle derailleur
  • Bicycle derailleur
  • Bicycle derailleur

Examples

Experimental program
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Effect test

Embodiment Construction

[0074] Referring to the accompanying drawings, there is shown a preferred embodiment of a bicycle derailleur according to the present invention. The derailleur shown is a front derailleur and is generally indicated by the reference number 10 .

[0075] The front derailleur 10 is preferably a mechanical derailleur, ie does not require any electric and / or electronic devices for its operation.

[0076] The derailleur 10 includes a chain guide 11 configured to slidably engage a drive chain (not shown) of a bicycle to move it across a plurality of intermediate positions between the inner position and the outer position from the inner position to the outer position. external location.

[0077] The predetermined position of the chain guide 11 corresponds to the predetermined position of the transmission chain on the crown wheel of the chainring.

[0078] In particular, the inner position of the chain guide 11 corresponds to the position of the chain on the smallest crown wheel of t...

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PUM

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Abstract

The invention relates to a bicycle derailleur comprising a chain guide (11) configured to interact with a transmission chain of the bicycle and movable between a plurality of intermediate positions comprised between an inner position and an outer position, a fixed body (15) adapted for being fixedly associated with a part of frame (101) of the bicycle, an outer connection element (14) rotatably connected to the fixed body (15) about a first articulation axis (A) and rotatably connected to the chain guide (11) about a second articulation axis (B) parallel to the first articulation axis (A), aninner connection element (13) rotatably connected to the fixed body (15) about a third articulation axis (C) and to the chain guide (11) about a fourth articulation axis (D), an actuation arm (20) hinged to the fixed body (15) about the first articulation axis (A), a cable-clamping washer (50) equipped with a cable-bending appendage (51) insertable in a seat (40) of the actuation arm (20). The seat (40) extends along a first direction (F) and is provided with a first (40a) and a second insertion opening (40b) opposite one another and selectively engageable by said cable-bending appendage (51)of the cable-clamping washer (50).

Description

technical field [0001] The present invention relates to a bicycle derailleur, preferably for racing bicycles. Background technique [0002] As is well known, a derailleur, whether front or rear, is used to move a drive chain from one gear of a chainring or cassette to another of a different diameter, thereby performing by changing the gear ratio variable speed. [0003] Movement of the derailleur is obtained by an actuating device mounted on the handlebar so as to be easily manipulated by the cyclist. [0004] In a mechanical transmission, the front derailleur, for example between the crown gears of the chainring, is moved upward by the tractive action exerted by a usually sheathed inextensible control wire (commonly called a Bowden wire), and controlled by The pull of the thread is released to move downward. [0005] The derailleur consists of a chain guide (or guide frame) that sits on top of the drive chain, and a positioning mechanism for the chain guide that is held ...

Claims

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Application Information

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IPC IPC(8): B62M9/134B62M9/136B62M9/12
CPCB62M9/134B62M9/136B62M9/137B62M9/1342
Inventor 马尔科·明托尼古拉·费奥
Owner CAMPAGNOLO SRL