Introduction to the structure diagram of car wiper

    汽车雨刮器主要是由直流电动机、涡轮箱、曲柄、连杆、摆杆、刮（水）片等组成。其结构简图如下：

    The power of the car wiper comes from the electric motor, which is the core of the entire wiper system. The quality requirements of the automobile wiper motor are quite high. It uses a DC permanent magnet motor. The automobile wiper motor installed on the front windshield is generally integrated with the turbine and worm mechanical part. The function of the worm gear mechanism is to decelerate and increase the torsion, and its output shaft drives the four-bar linkage mechanism, which converts the continuous rotation motion into a left-right swing motion through the four-bar linkage mechanism.

    The automobile wiper motor adopts a three-brush structure to facilitate speed change. The intermittent time is controlled by an intermittent relay, which uses the charge and discharge function of the return switch contact of the motor and the resistance and capacitance of the relay to make the car wiper wipe in a certain period. The wiper strip of the car wiper is a tool to directly remove rain and dirt on the glass.

    The wiper strip is pressed against the glass surface by the spring strip, and its lip must match the angle of the glass in order to achieve the required performance.

    The motor current of the car wiper is supplied by the vehicle power supply. The motor has the advantages of small size, light weight, simple structure, etc., so it is widely used in automobiles at home and abroad.

Several reasons for the failure of car wiper