Disclosed is an apparatus to extend a cushion part of a vehicle seat, which selectively moves a part of the front side of a seat surface of a cushion portion from a cushion frame of the seat toward a front side in accordance with the body shape of a passenger who sits on the seat to widely extend the seat surface so as to stably support a femoral region among body portions of the passenger, and applies a dual locking structure of a double row type between a protruding part and a coupling hole to improve structural rigidity for a coupling portion. According to the present invention, the apparatus to extend a cushion part of a seat comprises: a fixed member (40) coupled to a cushion frame (5); a moving member (20) coupled to the fixed member (40) to support a moving type cushion part (9) to be able to move forward; an operation member (30) rotationally installed on the moving member (20); a link member (50) linked with the operation member (30) to be dislocated, and adjusting coupling and decoupling of the moving member (20) with respect to the fixed member (40); and a coupling member (60) to be linked through a contact with a tilted surface part (54a) of the link member (50) and installed to be able to be inserted into a coupling portion of the fixed member (40). The fixed member (40) includes a plurality of main coupling holes (43) and an auxiliary insertion protruding part (44) in a front/rear direction, and the coupling member (60) includes a main insertion protruding part (62) coupled to the main coupling hole (43) and an auxiliary coupling hole (63) coupled to the auxiliary insertion protruding part (44).

    본 발명은 시트에 착좌하는 탑승자의 체형에 맞춰 쿠션부위의 좌면의 전방측 일부를 시트의 쿠션 프레임으로부터 전방을 향해 선택적으로 이동시켜 좌면을 보다 넓게 확장할 수 있게 함으로써 탑승자의 신체부위 중 대퇴부를 보다 안정적으로 지지할 수 있게 하고 돌기부와 체결구멍 사이에 복열 방식의 이중 록킹구조를 적용함으로써 결합부위에 대한 구조적 강성을 향상시킬 수 있는 자동차 시트의 쿠션부 확장장치를 개시한다. 전술한 시트의 쿠션부 확장장치는 쿠션 프레임(5)에 결합되는 고정부재(40), 고정부재(40)에 결합되어 이동식 쿠션부(9)를 전방으로 이동 가능하게 지지하는 이동부재(20), 이동부재(20)에 선회 가능하게 설치되는 조작부재(30), 조작부재(30)와 연동하여 변위되고 고정부재(40)에 대한 이동부재(20)의 결합과 해제를 조절하는 링크부재(50), 및 링크부재(50)의 경사면부(54a)와의 접촉을 통해 연동 가능하고, 고정부재(40)의 체결부위에 삽입 가능하게 설치되는 체결부재(60)를 포함하고, 고정부재(40)는 전후방향으로 다수의 메인 체결구멍(43)과 보조 삽입돌기부(44)를 구비하고, 체결부재(60)는 메인 체결구멍(43)과 결합 가능한 메인 삽입돌기부(62)와 보조 삽입돌기부(44)와 결합 가능한 보조 체결구멍(63)을 구비한다.


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    Title :

    Extensible apparatus for seat cushion in vehicle


    Additional title:

    자동차 시트의 쿠션부 확장장치


    Contributors:

    Publication date :

    2019-03-11


    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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