Continuous sensor for detecting drum brake friction plate and drum brake

Abstract

The application relates to a continuous sensor for detecting drum brake friction plates and drum brakes, belonging to the technical field of automobile drum brake detection, including: a sensor body, which includes a sensor housing and a sensor sliding core, and the sensor sliding core is located in the sensor housing And it is slidingly connected with the sensor housing; the sliding resistor is located between the sensor housing and the sensor sliding core, and the sensor housing and the sensor sliding core change the resistance value of the sliding resistor through relative sliding; the flexible pulling part, the flexible pulling The part is connected with the sensor sliding core, and the flexible pulling part is used to pull the sensor sliding core to make the sensor sliding core move linearly in the sensor housing. The brake shoe of this application is connected to the sliding core of the sensor by a flexible pulling part, and the sliding resistor can continuously monitor the wear degree of the friction plate. When the brake shoe is retracted, the flexible pulling part can ensure the resistance of the sliding resistor Unchanged, it can also eliminate the adverse effects of vibration on the continuous sensor itself and the signal.

Description

technical field [0001] The application relates to the technical field of detection of automobile drum brakes, in particular to a continuous sensor for detecting drum brake friction plates and a drum brake. Background technique [0002] With the advancement of automobile technology and the improvement of users' requirements for maintenance convenience, as well as the requirements of laws and regulations for friction pad wear alarms, drum brake friction pad wear alarm devices are used more and more in automobiles. [0003] The braking of the vehicle is mainly achieved by the friction between the brake friction plate and its counterpart (brake drum or brake disc), and the brake friction plate will continue to wear during the braking process. Friction discs are generally made of non-metallic materials, and are fixed on brake shoes (or back plates) made of metal materials by means of riveting, sticking, bolting or sintering. When the friction plate wears to the limit, if it is n...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application provides a continuous sensor and a drum brake for detecting the friction plate of the drum brake, so as to solve the problem in the related art that the sensor detects the residual signal of the friction plate inaccurately, which leads to the decrease or loss of the braking function of the brake

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