What Causes the Lower Part of the Left Wiper to Shake on a New Car?

[SanLawson]

Impurities or foreign objects on the wiper blade or glass surface can cause noticeable resistance when the wiper reaches certain positions, leading to shaking. Below is relevant information about wipers: 1. Operating Principle: The power source of the wiper comes from the motor, which is the core of the entire wiper system. The quality requirements for the motor in wipers are quite high. Typically, a DC permanent magnet motor is used, and the wiper motor installed on the front windshield is usually integrated with the worm gear mechanical part. The worm gear mechanism serves to reduce speed and increase torque, with its output shaft driving a four-bar linkage mechanism that converts continuous rotational motion into a left-right oscillating motion. 2. Basic Introduction: The wiper is a blade-like structure installed in front of the windshield, composed of a motor, reducer, four-bar linkage mechanism, wiper arm spindle, and wiper blade assembly. Its main function is to clear rain, snow, and dust that obstruct the view on the windshield.