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Chain storing and releasing device

A retractor and chain technology, which is used in chain/belt transmission, vehicle gearbox, transportation and packaging, etc., can solve the problems of inability to retract and tension the chain, and the limited size of the tension of the chain.

Active Publication Date: 2014-07-30
叶龙华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the retractable tension scale of the chain in the existing bicycles, the chain retractable function is mainly realized by the rear derailleur in the speed change system. Because it adopts a parallel link multi-axis swing arm structure, the chain's The retractable tension scale is limited, and the chain retractable tension function of a larger scale and synchronous action cannot be realized when the bicycle requires to change the wheelbase

Method used

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Examples

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Embodiment Construction

[0008] with one of the examples figure 1 , figure 2 , image 3 , Figure 4 The aforementioned and technical contents of the present invention are described in detail: the main body of the chain retractor is in the shape of an inverted "T", including a vertical short arm (1) at the front end, an oblique long arm (2) integrated at the rear end, and a positioning guide chain Wheel (6), floating guide sprocket (11), U-shaped connector (12), tubular distance adjusting screw (8), drag cable (13) and drag cable casing (9), the vertical short arm [ 1) The upper part is provided with a mounting seat (3) fixed to the lower end of the shaft of the main frame (4) crankset (5), and the lower part is provided with a fixed distance from the lower edge of the outer circle of the crankset, the same vertical plane, and radial center alignment. The positioning guide sprocket (6) of the position, the oblique long arm (2) whose rear end of the vertical short arm (1) is integrated is provided w...

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Abstract

The invention discloses a chain storing and releasing device used for a bicycle with a variable wheel base. A body is inverted T-shaped and consists of a mounting seat, a positioning leading chain wheel, a floating leading chain wheel, an inhaul cable, an inhaul cable sleeve, a tubular distance adjusting screw and the like which are arranged and mounted in a vertical short arm and oblique long arms of which the rear ends are integrated in sequence. The chain storing and releasing device is capable of realizing larger scale and synchronization action of storing and releasing a chain along with the frame wheel base change, and has the advantages that the structure is simple, the action is reliable, and the frictional loss is small.

Description

technical field [0001] The utility model relates to a variable wheelbase bicycle chain tensioning device for bicycles, especially for large-scale synchronous retractable chains. Background technique [0002] Due to the retractable tension scale of the chain in the existing bicycles, the chain retractable function is mainly realized by the rear derailleur in the speed change system. Because it adopts a parallel link multi-axis swing arm structure, the chain's The retractable tension scale is limited, and the chain retractable tension function of a larger scale and synchronous action cannot be realized when the bicycle requires to change the wheelbase. Contents of the invention [0003] The purpose of the present invention is to develop a bicycle chain retractor with a simple structure and reliable action, which can obtain a larger scale and synchronous action when the bicycle wheelbase changes. [0004] The present invention is realized as follows: the main body of the cha...

Claims

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Application Information

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IPC IPC(8): B62M9/16
CPCB62M9/06B62M9/16
Inventor 叶龙华
Owner 叶龙华
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