When the door glass lifter works, the slider slides in the guide rail, thereby driving the door glass up or down. After the slider is installed on the rotating rivet, another section of the rotating rivet is riveted on the main/auxiliary arm, and one section of the slider is installed on the guide rail. When the lifter is activated, the slider slides in the guide rail, driving the window glass up or down. . When the car is in use, impurities such as sand and gravel will enter the interior of the door and adhere to the guide rails of the tooth plate lift, which will increase the operating friction of the lift and damage the slider, thereby reducing the life of the window lift. Chinese patent application number 201020624928.4, application date 2010_11_25 discloses a glass lift slider, which includes an outer slider, which is provided with a spherical groove with a round mouth; and also includes an inner slider, which is The slide block is a ball table-shaped outer slide block and a ball table-shaped inner slide block. The outer slide block is sleeved on the inner slide block through a spherical groove. The curvature of the arc surface of the spherical groove is greater than the curvature of the arc surface of the inner slide block;