The present invention relates to a lumbar support device for a vehicle seat, which is realized in a simple structure and ensures reliability of an operation by simplifying a configuration while reliably performing a function of a lumbar support for comfortably supporting a body. A lumber plate includes an inner plate and an extrapolated outer plate which are coupled to each other, a worm wheel is rotatably installed on the inner plate constituting the lumber plate, a screw thread worm provided on a motor shaft connected to a motor is engaged with a worm wheel gear part so as to rotate the worm wheel, a rack gear is provided on the outer plate constituting the lumbar plate so as to be engaged with the worm wheel gear part to move the outer plate, and both sides of the outer plate surround the inner plate to prevent the inner plate from being separated. Accordingly, the lumbar support device is realized with a simple structure by the inner and outer plates, and the lumbar support device is formed of a synthetic resin, so that manufacture and assembly are facilitated so as to remarkably contribute to economic efficiency due to productivity improvement, and weight reduction of a vehicle due to a decrease in a weight and a number of components.

    본 발명은 몸을 편안하게 받쳐주는 럼버서포트의 기능을 충실히 수행하면서도 구성을 단순화하여 동작의 신뢰성을 확보하고, 간단한 구조로 구현된 차량 시트용 럼버서포트 장치에 관한 것이며, 럼버플레이트를 구성시, 내측플레이트와 외삽되는 외측플레이트로 구성되어 상호 결합되며, 상기 럼버플레이트를 구성하는 내측플레이트에는 웜 휠이 회전할 수 있게 설치되고 상기 웜 휠을 회전시킬 수 있도록 웜 휠기어부에 모터와 연결된 모터축에 구비된 나사형 웜이 기어 맞물림으로 결합되고, 럼버플레이트를 구성하는 외측플레이트에는 웜 휠기어부에 기어 맞물림으로결합되어 외측플레이트를 이동시킬 수 있도록 렉기어가 형성되어 웜 휠기어부에 기어 맞물림으로 결합되어 있고, 내측플레이트가 이탈하지 않게 외측플레이트의 양쪽이 내측플레이트를 감싸도록 구성된 것이며, 내,외측 플레이트에 의한 간단한 구조로 럼버서포트 장치의 구현이 가능하도록 하고, 합성수지로 구성되었기 때문에 제조 및 조립을 용이하게 할 수 있어 생산성 향상에 따른 경제성과 부품수 및 중량 감소로 차량의 경량화에 크게 기여하는 효과가 있다.


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    Title :

    Lumber support device for vehicle seat


    Additional title:

    차량 시트용 럼버서포트 장치


    Contributors:
    SONG JAE YEOL (author) / HEO CHEOL (author) / NAM HYANG MO (author) / KIM MIN SUNG (author)

    Publication date :

    2019-03-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet



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