Gearbox and seat sliding rail with same

Abstract

The gear box comprises an upper box cover and a lower box cover, a worm gear and a worm which are meshed with each other are arranged between the upper box cover and the lower box cover, the worm gear comprises a tooth part and a supporting shaft extending outwards from the two ends of the tooth part, the worm gear is provided with a center threaded hole penetrating through the axial direction of the worm gear, and the worm gear and the supporting shaft are arranged in the center threaded hole. The inner side of the upper box cover and the inner side of the lower box cover are each provided with a left positioning groove, a tooth portion positioning groove and a right positioning groove in sequence, the left positioning grooves and the right positioning grooves are used for positioning and installing the shaft sleeves, the ends, close to the tooth portions, of the shaft sleeves are each provided with a positioning step, and the two positioning steps are located in the tooth portion positioning grooves. And an elastic element is arranged between one positioning step and the side wall of the tooth part positioning groove, so that the other positioning step is propped against the side wall of the tooth part positioning groove. The speed reducer has the advantages of being compact in structure, convenient to assemble, low in transmission noise and the like.

Description

technical field [0001] The invention belongs to the technical field of automobile seat parts, and in particular relates to a gear box and a seat slide rail having the gear box. Background technique [0002] The bottom of the car seat is usually provided with a slide rail assembly, so that the driver and passenger can adjust the position of the seat according to their own needs, so as to obtain a more comfortable sitting posture. [0003] There are generally two sets of car seat slide rails, which are symmetrically arranged on the body floor. Each set of slide rails consists of an upper slide rail and a lower slide rail. The upper slide rail is installed under the seat basin of the seat, and the lower slide rail is installed on the body. on the floor. At present, after the slide rail is assembled on the vehicle, the drive motor is located between the two sets of slide rails. The drive motor provides driving force to the gear box in the slide rail from the inner side of the t...

AI Technical Summary

Problems solved by technology

However, if the conventionally designed gearbox is directly applied to the slide rail device with a long sliding stroke, there are technical defects such as insufficient assembly and large transmission noise.

Images