The wiper can be divided into two structures: bony wiper and boneless wiper. Bone wipers, that is, traditional wipers with metal brackets; Boneless wiper, that is, there is no metal bracket, the so-called boneless wiper is relative to the traditional wiper with a bracket. From the design principle, the more the fulcrum of the wiper, the more uniform the force of the wiper piece, the more suitable the contact with the glass, and the better the effect of water can be achieved. Boneless wiper has no support, and the whole wiper itself is used to pressurize, which is equivalent to the whole wiper is the force point, so boneless wiper is more effective than the traditional support with bone wiper. At the same time, the metal bracket is removed to reduce the impact of the wiper on the driving field of view when opened. In addition, theoretically speaking, because the boneless wiper removes the weight of the metal bracket, it reduces the load of the wiper motor and also plays an indirect role in protecting the motor and extending the service life. Wipers, very few common parts on vehicles that are not specific to brand or model. It is also one of the most commonly used equipment on the vehicle in addition to sound and lighting. However, few owners of their cars have a good understanding of the rain scraper. Wiper manufacturers simply to explain to you the basic knowledge of a rain scraper