The invention belongs to the technical field of seats, and relates to a seat front-back adjusting mechanism which comprises a sliding rail and a seat leg fixing structure, the sliding rail is provided with a T-shaped groove in a base plate, arc-shaped grooves are formed in the opposite side faces of the two side walls of the T-shaped groove, and the seat leg fixing structure comprises a shell. A first limiting block which can slide on the T-shaped groove and limit the shell to move in the vertical direction is arranged on the front side or/and the rear side of the shell, a second limiting block which limits the shell to move front and back is arranged in the middle of the shell, a torsion spring is hinged to the position, between the first limiting block and the second limiting block, of the shell through a pin or a screw, and the two ends of the torsion spring abut against the first limiting block and the second limiting block respectively. The pull rod arranged on the shell moves upwards to drive the second limiting block to move upwards to be separated from the arc-shaped groove, the second limiting block drives the torsion spring to rotate at the same time and presses the first limiting block downwards so that a gap can be formed between the first limiting block and the upper wall in the T-shaped groove, the shell can move front and back, and the device has the advantages of being simple in structure, convenient to adjust and stable in performance.

    本发明属于座椅技术领域,涉及一种座椅前后调节机构,包括滑轨和座椅腿固定结构,滑轨为在基板上设置有T型槽,T型槽两侧壁相对的侧面上设置有弧形槽,座椅腿固定结构包括壳体,壳体的前侧或/和后侧设置有可在T型槽上滑动并限制壳体在竖直方向移动的第一限位块、中部设置有限制壳体前后移动的第二限位块,第一、二限位块之间的壳体上通过销钉或螺杆铰接有扭簧,扭簧的两端分别靠接在所述第一、二限位块上,壳体上设置的拉杆的向上运动带动第二限位块向上运动以脱离弧形槽,第二限位块同时带动扭簧转动并将第一限位块向下压以使第一限位块与T型槽内上壁出现间隙可以使壳体的前后移动,优点是:结构简单、调节方便,性能稳定。


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    Title :

    Seat front-back adjusting mechanism


    Additional title:

    一种座椅前后调节机构


    Contributors:
    CHEN YUN (author) / ZHAO CHAOFU (author) / DUAN LILI (author) / ZHANG XINYI (author)

    Publication date :

    2025-03-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES



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