Progressive adjustment system for seat lumbar support

Abstract

A progressive adjustment system for the lumbar support of a seat, which provides the effect of making the surface of the seat back appear as a sliding state of the raised part, so as to improve the comfort of the seat. Including an air bag set in the back of the chair relative to the waist of the human body, the air bag set is composed of at least three air bags arranged up and down and partially overlapped, each air bag can be operated by a control module and a gas distribution Valve to adjust the saturation, the control module contains a number of adjustment buttons that can control the expansion of a certain air bag so that other adjacent air bags are correspondingly exhausted, and the signal is connected to one that can record any adjustment button to control the air bag group The timing unit of the inflation or deflation time of each air bag in the middle achieves the effect that the raised part of the lumbar support slides along a linear line, which is different from the traditional method that can only control the growth and decline of a single air bag.

Description

technical field [0001] The present invention provides a progressive adjustment system for the lumbar support of a seat, in particular to a progressive adjustment system capable of controlling the surface of the lumbar support of the seat back to present a linear sliding state of the convex part, especially to the system The air distribution valve, air pump, timing unit and control module are used to control the rise and fall of multiple air bag groups in sequence, which is different from the traditional method that can only control the rise and fall of a single air bag. Background technique [0002] In order to improve the comfort of the lumbar support surface of the seat back when the human body leans against it, in the prior art, a mechanical push rod or a cam device is embedded in the sponge cushion body of the seat back, and dual motors are used to perform biaxial movement. The linear control makes it easy to stop the protruding point at any point, so as to adjust the cu...

AI Technical Summary

Problems solved by technology

However, due to the lack of a mechanical biaxial linear control structure, the aforementioned technology of controlling the expansion and deflation of each air bag through the air distribution valve can only simply adjust the height of the protrusion on the back surface of the seat, and it is still difficult to achieve a progressive lumbar support. Adjust the effect

[0005] In addition, during the research and development process of the present invention, an attempt was made to control each air bag with a button, but this method is no different from the general control system, and it is still difficult to achieve a gradual adjustment effect

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