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Crank set structure

A group structure and crank technology, which is applied in the field of crank group structure, can solve the problems of high production cost and low production efficiency, and achieve the effects of improving production efficiency, reducing production cost and saving assembly time

Inactive Publication Date: 2013-08-21
CHUAN WEI METAL PROD KUNSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, when assembling the two cranks, the connecting shaft is usually put into the bicycle shaft hole first, and then the two cranks are installed separately. This assembly method has low production efficiency and high production cost.

Method used

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  • Crank set structure
  • Crank set structure

Examples

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Embodiment Construction

[0012] The first embodiment of the present invention is as figure 1 Shown: a crankset structure, which includes a connecting shaft 1, a first crank 2, a second crank 3 and a stud 4; one end of the connecting shaft 1 is formed with a tooth portion 10, and the first crank 2 is riveted It is integrally connected with the tooth portion 10 ; the second crank 3 is integrally connected with the other end of the connecting shaft 1 through the stud 4 .

[0013] The second embodiment of the present invention is as figure 2 Shown: a kind of crank group structure, it comprises connecting shaft 1, first crank 2 and second crank 3 and stud 4; Described first crank 2 and one end of connecting shaft 1 are directly welded as a whole; The second The crank 3 is connected as a whole with the other end of the connecting shaft 1 through a stud 4 .

[0014] Before the bicycle is assembled, the first crank 2 and one end of the connecting shaft 1 are pre-welded or riveted as one. When assembling, t...

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PUM

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Abstract

The invention discloses a crank set structure comprising a connecting shaft, a first crank and a second crank. The first crank is fixedly and integrally connected with one end of the connecting shaft. The second crank is integrally connected with the other end of the connecting shaft through a bolt. Before bicycle assembly, one end of the crank and one end of the connecting shaft are pre-integrated. During assembly, the other end of the connecting shaft is allowed to directly pass through a shaft hole of a bicycle frame to be integrally connected with the other crank through the bolt. Compared with the existing assembly ways, the crank set structure has the advantages that assembly time is shortened, production efficiency is improved, and production cost is lowered correspondingly.

Description

Technical field: [0001] The invention relates to the field of bicycle cranks, and more specifically relates to a crankset structure with simple assembly. Background technique: [0002] The crank is an essential part of the bicycle structure, one end is connected to the chain wheel, and the other end is connected to the pedals, and two cranks are required in a bicycle structure. In the prior art, when assembling the two cranks, the connecting shaft is usually put into the bicycle shaft hole first, and then the two cranks are installed separately. This assembly method has low production efficiency and high production cost. Invention content: [0003] The object of the present invention is to provide a crankset structure, which has the characteristics of simple assembly and high production efficiency. [0004] In order to achieve the above object, a crankset structure of the present invention includes a connecting shaft, a first crank and a second crank, the first crank is f...

Claims

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Application Information

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IPC IPC(8): B62M3/00
Inventor 郑朝元
Owner CHUAN WEI METAL PROD KUNSHAN