Bicycle speed variator and variable speed bicycle

A technology for variable-speed bicycles and transmission devices, which is applied in the field of variable-speed bicycles and bicycle transmission devices. It can solve the problems of inconvenience, high cost, and easy chain loss, and achieve the effects of simple structure, convenient control, and reliable speed change.

Inactive Publication Date: 2005-09-28
徐守则
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is mainly composed of multiple sprockets, derailleurs, chains, chain compactors, etc. This device has a complex structure and high cost. Moving a chain on different sprockets is easy to drop the chain, which is very uncomfortable. Convenient, and the device with this structure

Method used

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  • Bicycle speed variator and variable speed bicycle
  • Bicycle speed variator and variable speed bicycle
  • Bicycle speed variator and variable speed bicycle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Figure 1~ image 3 Shown structure is a kind of bicycle speed change device of the present invention, and it comprises front sprocket 1, rear flywheel 2 and chain, and wherein front sprocket 1 is installed on the bicycle pedal rocker 4 by a bearing 15, and bearing 15 is connected with bicycle. The shaft 5 is coaxial; the rear flywheel 2 is installed on the rear wheel of the bicycle, and is coaxial with the rear axle 6 of the bicycle. Flywheel 7, the top block 8 that is fixed on the front sprocket 1, the swing stopper 9 that is hinged on the same side of the top block 8 on the pedal rocker arm 4 inboard and the rocker that is compressed between the pedal rocker arm 4 and the swing stopper 9 Spring 10; the top block 8 is a wedge-shaped block; the swing block 9 is of the "冂" type; the middle part of the side where the swing block 9 contacts with the spring 10 is provided with a groove 11, and When the block 9 was perpendicular to the pedal rocking arm 4, a groove 12 was al...

Embodiment 2

[0026] A kind of variable speed bicycle of the present invention, it comprises car front wheel, car rear wheel, center axle 5, rear axle 6, the pedal rocker arm 4 that is installed on the center axle 5 and has included front chain wheel 1, rear flywheel 2, The bicycle speed change device of the chain, wherein, the front sprocket 1 is installed on the pedal rocker 4 through a bearing 15, the bearing 15 is coaxial with the center shaft 5, and the rear flywheel 2 is installed on the rear wheel of the car, and is coaxial with the rear axle 6 shaft, the bicycle speed change device also includes a front flywheel 7 fixed on the pedal rocker arm 4 and coaxial with the front sprocket 1, a top block 8 fixed on the front sprocket 1, and hinged on the same side of the top block 8 The swing block 9 on the inner side of the pedal rocker arm 4 and the spring 10 compressed between the pedal rocker arm 4 and the swing block 9; the top block 8 is a wedge block; the swing block 9 is " "" type; t...

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PUM

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Abstract

The bicycle speed variator includes front chain wheel installed via a bearing on pedal rocking arm, back flywheel on the back wheel and with two back chain wheels, double chain, front flywheel coaxial with the front chain wheel, push block fixed onto the front chain wheel, swinging stopper hinged to inside of the pedal rocking arm, and spring compressed between the pedal rocking arm and the swinging stopper. The swinging stopper under the control of the spring has two stable work positions; the push block has one bevel and moving track crossing with that of the swinging stopper in one of its stable work positions. When the middle shaft rotates reverse, the swinging stopper under the action of centrifugal force or push block pressure can convert between two stable work positions. The present invention also discloses the variable speed bicycle with the speed variator.

Description

technical field [0001] The invention relates to a speed change device, in particular to a bicycle speed change device. The present invention also relates to a speed-changing bicycle using the above-mentioned speed-changing device. Background technique [0002] Existing bicycle transmissions usually adopt a tower wheel structure, and the chain is placed on different sprockets with a derailleur to realize the speed change of the bicycle by changing the speed ratio of the front and rear sprockets. It is mainly composed of multiple sprockets, derailleurs, chains, chain compactors, etc. This device has a complex structure and high cost. Moving a chain on different sprockets is easy to drop the chain, which is very uncomfortable. It is convenient, and the device with this structure can set multi-level speed or form stepless speed regulation. For general users, multi-level or stepless speed regulation is completely unnecessary, complicated structure, and many unnecessary functions...

Claims

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Application Information

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IPC IPC(8): B62K3/00B62M9/04
Inventor 徐守则
Owner 徐守则
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