To obtain a connection structure between left and right seat backs that can reduce back-and-forth rattling of seat backs.SOLUTION: A connection structure between left and right seat backs includes: a left side seat back and a right side seat back which are provided adjacent to each other in a seat longitudinal direction, and can tilt around an axis along the seat longitudinal direction independently from each other; a hinge bracket which includes a through hole 36 that is bored in the seat longitudinal direction and has a short axis and a long axis, and is provided at a boundary between the left side and right side seat backs; a pin part of which one end is connected to a side face of the seat back facing the boundary, the other end is equipped with a head of which at least a part of an outer diameter is larger than an inner diameter of the through hole 36 in a short axial direction Y and is smaller than an inner diameter thereof in a long axial direction X, and which penetrates the through hole 36; and a bushing 42 which has an insertion hole 42A through which the pin part rotatably inserts, and of which an outer peripheral shape of a tip 42B on the other seat back side has a shape substantially same as that of the through hole 36 and is so formed as to be smaller than the through hole 36.SELECTED DRAWING: Figure 4

    【課題】シートバックの前後方向のガタつきを低減することができる左右のシートバック同士の連結構造を得る。【解決手段】左右のシートバック同士の連結構造は、シート左右方向に隣接して設けられ、シート左右方向に沿った軸線回りに互いに独立して傾動可能とされた左側シートバック及び右側シートバックと、シート左右方向に穿設され短軸及び長軸を有する貫通穴36を備え、左側及び右側のシートバックの境界に配設されるヒンジブラケットと、一端が一方のシートバックの上記境界に面する側面に接続され、他端に少なくとも一部の外径が貫通穴36の短軸方向Yの内径よりも大きくかつ長軸方向Xの内径よりも小さい頭部を備え、貫通穴36を貫通するピン部と、ピン部が回転可能に挿通する挿通孔42Aを有し、他方のシートバック側の先端部42Bの外周形状が貫通穴36と略同形状で、かつ貫通穴36よりも小さく形成されたブッシュ42と、を含む。【選択図】図4


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    Title :

    CONNECTION STRUCTURE BETWEEN LEFT AND RIGHT SEAT BACKS


    Additional title:

    左右のシートバック同士の連結構造


    Contributors:

    Publication date :

    2023-07-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



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