How the window wiper motor works

The wiper motor is driven by the motor, and the rotary motion of the motor is converted into the reciprocating motion of the wiper arm through the link mechanism, so as to realize the wiper action. Generally, the wiper can work by turning on the motor. The current of the motor controls the speed of the motor and then the speed of the scraper arm. The wiper motor adopts a 3-brush structure for easy shifting. The intermittent time is controlled by the intermittent relay, and the wiper is wiped according to a certain period by using the charging and discharging function of the motor's return switch contact and the relay resistance and capacitance.

The quality requirements of the wiper motor are quite high. It adopts DC permanent magnet motor, and the wiper motor installed on the front windshield is generally integrated with the mechanical part of the worm gear. The function of the worm gear mechanism is to reduce the speed and increase the torque.

The electric window wiper consists of a DC motor, a transmission mechanism and a control switch. The control switch generally has three working positions of high speed, low speed and intermittent, and has a self-reset function. Under the action of the control switch, the DC motor moves, and its action is transmitted to the wiper blade through the worm gear, pull rod, swing rod, etc., so that the blade can complete the required action.

There is a very important electronic component in the wiper motor, called the thermal overload protector. The most common model is the PB series produced by Otter in the United States, which is widely used in various types of automotive wiper motors. The motor thermal protector produced by HCET can perfectly replace the Otter PB series, and is widely used in automobile window motors, pedal motors, and sunroof motors. Provides enameled wire burnout protection when the motor is locked. The combination of bimetal and heating wire has quick disconnection and precise tripping time to prevent motor temperature from being too high. It has dual performance of induced current and temperature action. Each part is strictly Implementing the European ROHS environmental protection standard, there are various types of terminals for flexible selection, and specific specifications or riveting services can be produced according to customer requirements.