A kind of environment-friendly drum brake for bicycle

Abstract

The present invention relates to the technical field of drum brakes, in particular to an environment-friendly drum brake for bicycles, which includes a brake base plate and a brake drum. A brake wheel cylinder is fixedly installed on the upper end of the brake base plate, and the brake wheel Brake shoes are connected to both ends of the cylinder, and the lower ends of the brake shoes are rotatably connected to the brake bottom plate through a rotating shaft. A horizontal fixed pipe is fixedly installed on the lower end of the movable base plate, the fixed pipe is located between the brake shoes, and one end of the connecting rod extends to the inside of the fixed pipe, and the end of the connecting rod close to the fixed pipe is connected with a first The upper end of the middle part of the fixed pipe is fixedly connected with the lower end of the first connecting pipe. When the device is used, the automatic adjustment of the brake shoes can be realized, the utilization rate of the friction plate can be improved, and the use cost of the device can be reduced, making the device more environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of drum brakes, in particular to an environment-friendly drum brake for bicycles. Background technique [0002] The friction plate of the drum brake will wear out continuously during use, which will continuously expand the gap between the friction plate and the brake drum, which will increase the lag time of the brake mechanism operation and affect the safety of vehicle driving. In order to keep the gap between the friction plate and the brake drum within an appropriate range, an automatic adjustment gap adjustment mechanism such as a ratchet bolt mechanism or a worm gear mechanism is designed. These gap adjustment mechanisms are complex in structure and have many components. The complex matching relationship increases the cost and maintenance difficulty of the brake. [0003] When the friction plate is worn enough to be replaced, it often needs to be disassembled together with the entire gap adjustment mec...

AI Technical Summary

Problems solved by technology

[0002] The friction plate of the drum brake will wear out continuously during use, so that the gap between the friction plate and the brake drum will continue to expand, which will increase the lag time of the brake mechanism operation and affect the safety of vehicle driving

In order to keep the gap between the friction plate and the brake drum within an appropriate range, an automatic adjustment gap adjustment mechanism such as a ratchet bolt mechanism or a worm gear mechanism is designed. These gap adjustment mechanisms are complex in structure and have many components. Complicated matching relationship increases the cost and difficulty of maintenance of the brake

[0003] When the friction plate is worn out and needs to be replaced, it often needs to be disassembled together with the entire gap adjustment mechanism, which causes waste of parts to a certain extent and increases the use cost of the device

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