Harmonic intermediate shaft transmission for bicycle

A harmonic reducer and transmission technology, which is applied in vehicle gearboxes, vehicle parts, transportation and packaging, etc., can solve the problems of large volume, heavy weight, slow response, etc., achieve multiple choices, reduce its own weight and volume, and smooth The effect of shifting speed

Inactive Publication Date: 2016-07-20
丁琪彬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the central shaft transmission mechanism of bicycles is large in size and heavy in weight. It responds slowly when changing speeds, has obvious jumps and noises, and has a high failure rate.

Method used

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  • Harmonic intermediate shaft transmission for bicycle

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Effect test

Embodiment Construction

[0008] In the figure, the crank 1 is connected with the harmonic reducer 2, and the harmonic reducer 2 is connected with the sprocket 4 through the one-way clutch. The control mechanism 3 can make the crank 1 and the sprocket 4 directly connect and drive through the expansion and contraction of the ratchet. When the ratchet in the control mechanism 3 shrinks, the sprocket 4 can only run through the transmission of the harmonic reducer 2, so that the bicycle is running at a low speed. When the ratchet in the control mechanism 3 stretches out, the crank 1 directly drives the chain Wheel 4 rotates so that the bicycle is running at high speed. The expansion and contraction of the ratchet wheel in the control mechanism 3 can be controlled by a hand dial, so that the bicycle can change speed quickly, reliably and smoothly.

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PUM

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Abstract

The invention provides a harmonic intermediate shaft transmission for a bicycle and relates to an intermediate shaft speed change mechanism for the bicycle. The harmonic intermediate shaft transmission is composed of an input crank, an output chain wheel, a harmonic reducer and a control mechanism. The input crank is in linkage with the harmonic reducer, a transmission route is selected through the control mechanism, and finally the output chain wheel is engaged with a chain, so that the bicycle is driven to move. By the adoption of the harmonic intermediate shaft transmission, people can change the speed faster, more reliably and more smoothly in the riding process, and compared with a traditional intermediate shaft transmission, the harmonic intermediate shaft transmission has the beneficial effects that the dead weight and the size are greatly reduced, and more choices and greater convenience are brought for design and transformation of the bicycle.

Description

technical field [0001] The invention relates to a bicycle center shaft speed change mechanism. Background technique [0002] At present, the central shaft speed change mechanism of the bicycle has a large volume and a heavy weight, slow response when changing speed, obvious jumping and sound, and high failure rate. Contents of the invention [0003] The technical solution adopted in the invention is: the input crank is connected with the harmonic reducer, the transmission path is selected through the control mechanism, and finally the output sprocket is engaged with the chain to drive the bicycle. During the riding process, according to the road conditions, the manual control system can be used to select low-speed riding with a reducer or high-speed riding without a reducer, so as to achieve a speed change effect and make riding more comfortable. [0004] The beneficial effect of the present invention is to provide a bicycle center shaft speed change mechanism, which can ...

Claims

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Application Information

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IPC IPC(8): B62M23/00
Inventor 丁琪彬
Owner 丁琪彬
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