Gear speed variator and folding bicycle

Abstract

The present invention relates to a gear speed changer and a folding bicycle. It is characterized by that it has several gears which can be axially moved, said gears can be fit with several fixed gears, one component is moved, a mobile gear can be extended and can be meshed with a fixed gear, said component can be further moved, the meshed gear can be drawn back, and said component is continuously moved, another gear can be meshed with another fixed gear so as to change speed, the reciprocating movement of said component an implement repeated speed increment and decrement, its speed change gear and speed change ratio can be freely selected. Said speed changer can be mounted on the bicycle, and can be connected with ratchet wheel and drive wheel by means of multiple acceleration, the diameter of wheel is less than 10cm, and its speed can exceed that of existent bicycle, said bicycle handlebar can be folded by pressing a spring and sweeping a flab spring, and said bicycle body also can be completely folded by using a mobile slide barrel, so that its volume is small and weight is light. Said speed changer can be used in electric bicycle, motorcycle, power generation equipment and other machine.

Description

technical field [0001] The invention relates to a mechanical transmission device and a bicycle, in particular to a plurality of axially movable gears, ball bearings or sliding bearings are provided in these movable gears, and by moving the adjustment plate, the groove of the adjustment plate guides the slide on the shift lever. The sleeve, lever and movable gear move to mesh with and separate from the fixed gear on the other shaft to realize the speed change. The speed changer is placed on the bicycle tilt bar, a speed control handle is connected to two speed control ropes, and the seat post is inserted into the seat The outer pole has an air cushion effect, and the handle bar can be folded. Background technique [0002] At present, there are many types of known mechanical transmissions, mainly of the following types: [0003] 1. Ordinary gear transmissions transmit power through the meshing of gears. There are two or more gear combinations. When one gear combination is con...

AI Technical Summary

Problems solved by technology

[0010] The existing gear transmission has stable transmission, large speed ratio, and large output torque, but has the disadvantages of heavy weight and large volume; the existing friction transmission and belt transmission have unstable transmission, small output torque, and parts Vulnerable weakness; the existing chain-type tower-shaped transmission has the weakness of small output torque; the existing chain-type continuously variable transmission has weaknesses such as vulnerable parts

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