A gradual adjustment system of a lumbar support of a seat (1) enables a protruding portion on surface (12) of chair back (11) to slide to improve comfort of seat (1). The system comprises an air bag group (2) in chair back (11) corresponding to a waist position of a human body. The air bag group (2) consists of at least three partially overlapping air bags arranged from top to bottom. The air level of each air bag is adjusted by a control module (7) operating an air distributing valve (4). The control module (7) comprises a plurality of adjusting buttons capable of controlling other adjacent air bags to correspondingly exhaust air when a certain air bag is inflated, and is connected to, via a signal, a timing unit (8) capable of recording an air filling time or an air emptying time of each air bag in air bag group (2) controlled by any adjusting button, thus enabling the protruding portion of the lumbar support to slide linearly, and differing from a conventional method of controlling air filling and emptying a single air bag.


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    Title :

    GRADUAL ADJUSTMENT SYSTEM OF LUMBAR SUPPORT OF SEAT


    Additional title:

    SCHRITTWEISES ANPASSUNGSSYSTEM EINER LORDOSENSTÜTZE EINES SITZES
    SYSTÈME D'AJUSTEMENT PROGRESSIF DE SUPPORT LOMBAIRE DE SIÈGE


    Contributors:

    Publication date :

    2018-10-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / A47C Stühle , CHAIRS



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