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Drive arrangement for a bicycle

A technology for drives, bicycles, applied in transmissions, chain/belt drives, rider drives, etc., that solves the problem of not providing shift accuracy and/or axial range, etc.

Active Publication Date: 2020-08-11
SRAM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, many current drive configurations do not provide sufficient support for the tendency to arrange a greater number of driven sprockets over a greater overall axial distance and / or for adjacent sprockets to be axially closer together. Shift accuracy and / or axial reach

Method used

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  • Drive arrangement for a bicycle
  • Drive arrangement for a bicycle
  • Drive arrangement for a bicycle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0038] figure 1 is a side view of a road-type construction bicycle 21 for which a drive unit 33 is used. The bicycle 21 includes a frame 25 , a front wheel 27 and a rear wheel 29 rotatably attached to the frame 25 , and a drive device 33 . Front brakes 20 are provided to brake front wheels 27 and rear brakes 22 are provided to brake rear wheels 29 . Each of front wheel 27 and rear wheel 29 includes a tire 35 attached to rim 31 , wherein tire 35 is configured to engage riding surface 100 . A handlebar assembly 24 is provided to steer a front wheel 27 . The direction of the arrow "A" indicates the front and / or forward direction of the bicycle 21 . Thus, the direction of forward movement of the bicycle 21 corresponds to the direction A. As shown in FIG.

[0039] Other configurations of bicycle 21 are conceivable. E.g, figure 2 A bicycle 21 is depicted having a mountain or off-road configuration. Potential differences between bikes of various builds are covered in figure ...

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PUM

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Abstract

The invention relates to a drive arrangement for a bicycle. The drive arrangement for a bicycle may be provided with various interactive components configured to reliably and repeatably engage and disengage with one another both when new and after a period of wear. The drive arrangement may include a drive sprocket assembly connected to a driven sprocket assembly with a chain movable by a gear changer.

Description

technical field [0001] The present disclosure relates to a drive device for a bicycle. Specifically, the present disclosure describes a multi-ratio chain drive drive arrangement, such as in an external derailleur configuration. Describes the movement of the chain between the sprockets to change the ratio and maintain the connection between the sprockets to drive the bicycle. Background technique [0002] Bicycles can be equipped with drive means. For example, a crank assembly may be provided to transmit torque from the rider to the drive sprocket assembly. The drive sprocket assembly may have one or more drive sprockets. The drive sprocket assembly can transmit torque to the driven sprocket assembly through the chain. For example, a driven sprocket assembly may have a plurality of sprockets rotatable about the rear wheel axis and configured to engage a chain. A driven sprocket assembly may be rotationally fixed to the rear wheel in at least one direction of rotation. T...

Claims

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Application Information

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IPC IPC(8): B62M9/126B62M9/16B62M9/00
CPCB62M9/00B62M9/126B62M9/16B62M2009/005B62M2009/007B62M9/10B62M9/128B62M9/105F16H55/30F16G13/06B62M9/06F16G15/12F16H55/088B62M1/36B62M9/124F16H9/24
Inventor B·里贝罗P·桑托斯D·席尔瓦M·兰博H·布雷特J·拉蒂默J·科伦
Owner SRAM