The deceleration device (reduction box assembly) The output power of the rocker motor is mainly decelerated by the worm gear and the worm gear matched with the rotating shaft, and then transmitted to the lifting mechanism of the door and window. Therefore, the quality of the reduction gear box assembly is high. The reducer housing and the end cover reducer housing (end cover) are injection molded parts of high-quality engineering plastics. The shape of the mold is complex, and 106 needs to strictly ensure the accuracy of the processing dimensions. In particular, the geometrical tolerances of the bearing chamber, the worm support part, and the spigot part must meet the requirements. The raw material of the reducer housing (end cover) is glass-reinforced or inorganic filler-modified poly(butylene terephthalate) (PBT) thermoplastic (containing glass fiber 25%). Its outstanding feature is excellent molding processing performance, and it has an excellent price ratio of sex education. Polyamide (Nylon) PA6 (containing 30% glass fiber) is used as a shell-shell carbon cover material to improve its heat resistance and increase its bow lead. In addition to the heat protector, a brush fixing groove is also provided in the end cap 7 . The structural design of the reducer housing adopts stiffeners at multiple locations to ensure uniform wall thickness. The flatness of the flange surface facing the housing should be guaranteed, with a squareness of 0.08, which is crucial for the assembly of the motor assembly. When designing tapping screw bottom holes, make sure that torque is not slipping. Speed ​​reducer housing (end cover) of the final product of the Weinfeld worm and worm gear with the best performance of the smooth transmission performance and low noise characteristics. The tooth design of the worm wheel directly affects the cooperation with the worm, and affects the motor's operating efficiency and noise control.