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Multi sprocket arrangement with weld connection

A welding connection and sprocket technology, applied in welding equipment, hubs, manufacturing tools, etc., can solve the problem of insufficient space for press-fit connection, and achieve the effect of economical manufacturing and integration

Pending Publication Date: 2018-08-28
SRAM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for very small sprockets, there is not enough radial space for a press-fit connection between adjacent sprockets

Method used

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  • Multi sprocket arrangement with weld connection
  • Multi sprocket arrangement with weld connection
  • Multi sprocket arrangement with weld connection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0068] As mentioned below, the directions "front" and "rear" denote the front and rear sides of the sprocket, respectively. The front side of the sprocket points to the next smaller sprocket. The rear side of the sprocket points to the next larger sprocket. The term "axial" relates to the rear wheel axis or the axis of rotation of the multi-sprocket arrangement. The teeth are arranged radially on the outer side of the sprocket.

[0069] The outer diameter of the sprocket is the radially outer end of the sprocket, and the inner diameter is the radially inner end thereof. The figures are purely by way of example and only show some of the sprockets of the multi-sprocket structure for the sake of clarity.

[0070] figure 1 A bicycle comprising a multiple sprocket arrangement 10 according to the invention and a bicycle drive device according to the invention is shown. The bicycle driving device consists of a wheel structure 80 with a small wheel 82 and a large wheel 81 , a mul...

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Abstract

The invention relates to a multi sprocket arrangement with weld connection. The multi sprocket arrangement is used to transmit moment and is mounted on a driver which has a carrier profile and is connected with a bicycle chain. The multi sprocket arrangement includes a plurality of adjacent sprockets, each sprocket having different number of teeth. At least a first sprocket R3 in the plurality ofadjacent sprockets has a first inner diameter which is larger than an outer diameter of a profile base of a carrier profile of the driver, and a second sprocket R2 in the plurality of adjacent sprockets has a second inner diameter which is smaller than the outer diameter of the profile base of the carrier profile of the driver. The first sprocket R3 and the second sprocket R2 are connected together by welding.

Description

technical field [0001] The present invention relates to a multi-sprocket structure for mounting on a drive and a bicycle drive device having such a multi-sprocket structure. Background technique [0002] In recent years, the number of sprockets on multiple sprocket structures for mounting to the rear hub of a bicycle has been increasing. A multi-sprocket construction comprising a sprocket with a particularly high number of teeth, especially more than 50 teeth, and / or a sprocket with few teeth, especially less than 10 teeth, increases the transmission ratio of the drive or transmission range. But increasing the number of sprockets to 12 or more has its problems. Firstly, the installation space for housing the sprocket assembly is limited due to bicycle geometry and various technical standards. The axial installation space of the multi-sprocket structure is predetermined on the inside by the drive limit stopper and the moving spokes, and on the outside by the frame limit st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M9/10
CPCB62M9/10B62M9/12B62M9/04B62M9/105B23K20/12B29C65/1632B60B27/023
Inventor M·兰博李宏洲
Owner SRAM
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