To properly secure a structural intensity even when a back board is protruded from a back frame.SOLUTION: There is provided a seat back 2 comprising: a back frame 10 formed into a shape which is an almost inverted U-shape; and a resin planar back board 40 which is attached to a back rear face of the back frame 10. The back board 40 comprises: a general surface part 41 provided on a back rear part of an area surrounded by the back frame 10; a protruded surface part 42 which is protruded to outside and an upper side of a sheet width direction from a shoulder hole part 12A formed into an almost U-shape of the back frame 10; and a protrusion-shaped rib 43 which is formed on a surface on an inner side which is mated with the back frame 10 of the protruded surface part 42. The rib 43 comprises an extension part 43A extended to a direction D crossing the shoulder hole part 12A of the back frame 10 from the protruded surface part 42, and a contact part 43B which is mated to the shoulder hole part 12A formed into an almost U-shape of the back frame 10 from a rear side, and which is continuous to the extension part 43A.SELECTED DRAWING: Figure 3

    【課題】バックボードをバックフレームより張り出させても構造強度を適切に確保すること。【解決手段】略逆U字状を成す形に形成されたバックフレーム10と、バックフレーム10の背裏に取り付けられた樹脂製面状のバックボード40と、を有するシートバック2である。バックボード40が、バックフレーム10により囲まれた領域の背裏に設けられる一般面部41とバックフレーム10の逆U字の肩口部分12Aからシート幅方向の外側かつ上側に張り出す張出面部42と、張出面部42のバックフレーム10と合わされる内部側の面上に形成された突起状のリブ43と、を有する。リブ43が、張出面部42からバックフレーム10の肩口部分12Aと交差する方向Dに延びる延長部43Aと、延長部43Aに連なってバックフレーム10の逆U字の肩口部分12Aに裏側から当てられる当接部43Bと、を有する。【選択図】図3


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    Title :

    VEHICULAR SEAT BACK


    Additional title:

    乗物用シートバック


    Contributors:

    Publication date :

    2019-04-25


    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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