Seat electric lift adjustment device

Abstract

The seat electric height adjustment device disclosed in the present invention includes a seat height adjustment tooth plate and an electric mechanism that drives the seat height adjustment tooth plate to rotate, and the electric mechanism includes: a reduction box, a motor, a worm, and a helical gear assembly, Flexible bearings, flexible wheels, rigid wheel bodies, reduction box covers, output transmission parts. The electric mechanism uses a DC motor as a power source, and the torque of the motor is transmitted to the worm, and then transmitted to the helical gear assembly through the worm, and the worm and the helical gear assembly constitute the first-stage reduction of the electric mechanism. After the first stage of reduction transmission is completed, the power is output to the output transmission member through the harmonic gear mechanism composed of helical gear assembly, flexible bearing and flexible wheel. The seat electric height adjustment device of the present invention has the advantages of small volume, large output torque, large transmission ratio, high transmission precision, small return clearance, strong bearing capacity, etc., and increases the ease of adjustment and the overall strength of the seat. And the noise level is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of seats, in particular to an electric seat height adjustment device, which can adjust the height of a seat, especially a car seat, to rise and fall. Background technique [0002] The height adjustment devices used in passenger car seats are generally divided into two types, electric and manual, according to different configuration requirements of users. Electric adjustment devices currently on the market mainly use a motor-driven reduction box system to enable the driver or passenger to achieve a comfortable seating position. Almost all driving devices on the market are more or less faced with problems such as large volume, low transmission accuracy, large system backlash, low transmission ratio, low load-carrying capacity, and high requirements on the driving motor. [0003] The specific main problems of the height adjustment device of this structure include: [0004] 1. Large size and poor installation:...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to solve the technical problems of the existing automobile seat height adjustment device, such as large volume, low transmission precision, large system return clearance, small transmission ratio, poor bearing capacity, and high requirements for the driving motor. An electric seat height adjustment device with small size, high transmission precision, small system return clearance, high transmission ratio, and strong bearing capacity

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