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Sub-assembly sprocket-carrying body and cogset for bicycle rear wheel

A carrier and sub-assembly technology, applied in the direction of vehicle gearbox, vehicle components, components with teeth, etc., can solve the problems of structural yield of parts, regularity of interference operation, uneven distribution of stress, etc.

Pending Publication Date: 2021-02-02
CAMPAGNOLO SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this condition determines a very uneven distribution of stresses due to the torque transfer from the shifting disc to the sprocket carrier, thus subjecting the material of the sprocket carrier and shifting disc (and in extreme cases also the hub) to greater stress. stress
Therefore, there is a risk of deformations such as disturbing the regularity of operation, or even structural yielding of some parts

Method used

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  • Sub-assembly sprocket-carrying body and cogset for bicycle rear wheel
  • Sub-assembly sprocket-carrying body and cogset for bicycle rear wheel

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0039] figure 1 Shown is a hub 10 of a hub set (not shown) for the rear wheel of a bicycle, which is mounted coaxially on an axle 11 by means of a bearing 12; thus, the hub 10 is free to rotate on the axle 11 which is intended to be Fixed installation on the frame of the bicycle.

[0040] The hub 10 is coupled to the sprocket carrier 14 by a freewheel mechanism (not highlighted) which ensures that the hub 10 is set to rotate only in the direction that determines the forward direction of the bicycle and not in the opposite direction by the sprocket carrier 14 . The sprocket carrier 14 has an approximately tubular shape and is mounted freely on the axle 11 by means of a bearing 15 . The sprocket carrier 14 is provided on its radially outer peripheral surface with a coupling profile formed by grooves 16 arranged in the axial direction. Furthermore, near its axially inner end, the sprocket carrier 14 is provided with an end stop 18 in the form of a tooth protruding from the spro...

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PUM

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Abstract

The invention provides a sub-assembly sprocket-carrying body and a cogset for a bicycle rear wheel. The sub-assembly for a bicycle rear wheel, formed by a sprocket-carrying body (14) and a cogset (20)mounted coaxially on the sprocket-carrying body (14) through shape engagement, is sized so as to respect the condition: K=P1*P2 wherein P1 = Ls / Lp and P2 = Lc / (Sint + Sest).In this way, a good compromise is obtained between the ability to house a relatively large number of sprockets and the structural solidity of the sub-assembly.

Description

technical field [0001] The present invention relates to a subassembly for the rear wheel of a bicycle, the subassembly is formed by a sprocket carrier and a shift disc, the shift disc is formed on the radially outer peripheral surface of the sprocket carrier and arranged on the shaft The form fit on the coupling contour extending in the direction is mounted coaxially on the sprocket carrier. Background technique [0002] Throughout the present description and claims, spatial indications (such as in particular radial direction, axial direction, circumferential direction) will be given with reference to the axis of rotation of the rear wheel of the bicycle, which is identical to the axis of the shift disc , the axis of the sprocket carrier, the axis of the hub of the wheel and the axes of all elements that generally rotate with the wheel coincide. Furthermore, an axial direction is indicated as outward if it is away from the longitudinal median plane of the bicycle or away fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M9/10B62M9/121
CPCB62M9/10B62M9/121F16H55/30
Inventor 米尔科·奇维耶罗
Owner CAMPAGNOLO SRL