PROBLEM TO BE SOLVED: To provide a vehicle seat back frame structure which secures rigidity of an upper cross member while inhibiting peeling of joining in a joint part of a closed cross section structure of an upper cross member.SOLUTION: A vehicle seat back frame structure includes: side frames 21, 22 made of resin; and an upper cross member 30 spanned between upper parts of the side frames 21, 22. The upper cross member 30 has a first member 31 and a second member 32 disposed below the first member 31. An opening is provided at a lower part of the first member 31 and the first member 31 has a cross sectional shape opening downward. An opening part is provided at an upper part of the second member 32 and the second member 32 has a cross sectional shape opening upward. An opening of the first member 31 and an opening of the second member 32 are joined while facing each other to form a closed cross section structure.SELECTED DRAWING: Figure 3

    【課題】アッパークロスメンバーの閉断面構造の接合部における接合の剥離を抑制しつつ、アッパークロスメンバーの剛性を確保する。【解決手段】車両用シートバックフレーム構造は、樹脂製のサイドフレーム21,22と、サイドフレーム21,22の上部に架け渡されたアッパークロスメンバー30を備える。アッパークロスメンバー30は、第1メンバー31と、第1メンバー31の下方に配置される第2メンバー32を有する。第1メンバー31の下部には開口部が設けられ、第1メンバー31は、下方に開口する横断面形状を有し、第2メンバー32の上部には開口部が設けられ、第2メンバー32は、上方に開口する横断面形状を有する。第1メンバー31の開口部と第2メンバー32の開口部が対向している状態で接合されることにより、閉断面構造が構成されている。【選択図】図3


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    Title :

    VEHICLE SEAT BACK FRAME STRUCTURE


    Additional title:

    車両用シートバックフレーム構造


    Contributors:

    Publication date :

    2018-08-02


    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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