Seat electric lifting adjusting device provided with damping structure

Abstract

The invention discloses a seat electric lifting adjusting device provided with a damping structure. The seat electric lifting adjusting device provided with the damping structure comprises a reducer box body, a reducer box cover, a driving motor and a reducing mechanism. A planetary reduction mechanism in the reducing mechanism comprises a geared ring board, a planet carrier transmission component, a sun gear and a plurality of planet wheels. The planet carrier transmission component comprises a wheel disc, a lifting adjusting gear and a shaft part, wherein the wheel disc and the lifting adjusting gear are arranged coaxially, and the shaft part and the lifting adjusting gear are coaxially arranged between the wheel disc and the lifting adjusting gear. A center hole is formed in the center of the reducer box cover. An outward flanging which at least contains part of the shaft part is arranged on the periphery of the center hole. A volute-roll spring is wound on the shaft part to provide friction torque for the planetary reduction mechanism. The extremely large friction torque is generated to the planet carrier transmission component by the volute-roll spring of the seat electric lifting adjusting device provided with the damping structure, rotational speed of the planet carrier transmission component can be largely reduced, and therefore speed during descending of the seat is reduced, and the goal that speed difference of the ascending direction and the descending direction is reduced is achieved.

Description

technical field [0001] The invention relates to the technical field of seats, in particular to the technical field of car seats, in particular to an electric seat lift adjustment device with a damping structure. Background technique [0002] The lifting adjustment devices used in passenger car seats are generally divided into two types: electric or manual, according to different configuration requirements of users. Seat electric lift 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. [0003] DE10 2004 040602A1 discloses an electric lifting adjustment device in which a planetary reduction mechanism is driven by a drive motor through a worm gear transmission mechanism. The worm gear transmission mechanism and the planetary reduction mechanism are installed in the installation cavity defined by the reduction box body and the reduction box cover. , The worm in th...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a seat electric lift adjustment device with a damping structure in view of the obvious defect of the speed difference between the lifting direction and the falling direction existing in the current electric lifting device on the market. The chair electric lifting adjustment device can well solve the defect of the existing electric lifting device that the speed difference between the lifting direction and the descending direction is obvious

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