Most of them are caused by motor failure or linkage damage. The following are relevant introductions about wiper: 1. Introduction: wiper, also known as wiper, water paddle, wiper or windshield wiper, is a device used to wipe the rain and dust attached to the vehicle windshield, so as to improve the driver's visibility and increase driving safety. Because of legal requirements, almost all cars are equipped with wipers. The rear windows of hatchbacks, recreational vehicles and other vehicles are also equipped with wipers. In addition to automobiles, other means of transport are also equipped with wipers, such as trains and trams. Some engineering machines and tools, such as cranes, are also equipped with wipers.
 2. Structure: It is composed of motor, reducer, four-bar linkage, wiper arm spindle, wiper blade assembly, etc., and is mainly used to remove rain, snow and dust on the windshield that hinder vision.