Opposed-piston mechanical disc brake suitable for Chinese national standard electric two-wheel vehicle

Abstract

The invention discloses an opposed-piston mechanical disc brake suitable for a Chinese national standard electric two-wheel vehicle. The brake comprises a pull rod, a large tong body, a small tong body, brake pads and steel balls. A large tong body upper ejector rod is arranged inside the large tong body. A small tong body upper ejector rod is arranged inside the small tong body. The large tong body is provided with a mounting groove. The small tong body is provided with a mounting groove. One end of the large tong body upper ejector rod penetrates through the corresponding mounting groove tobe connected with the pull rod, and one end of the small tong body upper ejector rod penetrates through the corresponding mounting groove to be connected with the pull rod. A large tong body lower ejector rod is arranged on the inner side of the large tong body upper ejector rod. A small tong body lower ejector rod is arranged on the inner side of the small tong body upper ejector rod. Steel ballsare arranged between the large tong body upper ejector rod and the large tong body lower ejector rod. Steel balls are arranged between the small tong body upper ejector rod and the small tong body lower ejector rod. Braking of the brake pads is completed through the pressing action of the steel balls. Because of two-way braking, the opposed-piston mechanical disc brake suitable for the Chinese national standard electric two-wheel vehicle is good in braking effect, free adjustment on the degree of tightness of the brake is achieved, it is guaranteed that the brake device of the electric vehicle will not lose the braking effect, and the safety is greatly improved.

Description

technical field [0001] The invention relates to an opposed-piston mechanical disc brake suitable for national standard electric two-wheel vehicles. Background technique [0002] Braking devices are relatively common in daily life, basically covering the entire transportation system, and mainly function to stop or slow down locomotives, vehicles and other transportation vehicles. With the increasing use of electric vehicles, there are more and more safety accidents caused by riding electric vehicles. Among these accidents, the accidents caused by overspeed and excessive speed caused by long braking distances account for a large proportion Specific gravity; in order to reduce the occurrence of accidents, the country has formulated certain standards for the production and use of electric vehicles, such as: must have pedal riding function, the maximum speed is less than 25km / h, the rated power of the motor is less than 400w, and the speed reaches 15km / h The implementation of th...

AI Technical Summary

Problems solved by technology

However, the drum brake has the following disadvantages: 1. The diameter of the drum of the drum brake will increase after being heated, which will cause the stroke of the brake pedal to increase, and the brake response is not as expected.

2. The response of the braking system is slow, and the pedaling force of the brakes is difficult to control, which is not conducive to high-frequency braking actions

3. The structure is complicated and there are many parts, and the brake clearance must be adjusted, which makes maintenance difficult. At the same time, the drum brake structure has a small braking force and is inconvenient to maintain; this is likely to cause safety accidents, so this braking method is no longer suitable for existing national standard electric bicycles. standard, so there is an urgent need to improve the existing braking methods

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