PROBLEM TO BE SOLVED: To provide a back frame structure of a vehicular seat equipped with an upper frame having a closed cross section part, which can suppress increase in weight while securing torsional rigidity.SOLUTION: A back frame 10 has a right side frame 11 extending in a vertical direction, a left side frame 12, and an upper frame 13 connecting upper end parts of the right side frame 11 and the left side frame 12 to each other like a bridge. The upper frame 13 has a main body part 20 having a cross section in a substantially inverted U-shape which opens downward and a lid member 30 mounted thereon so as to block at least part of an opening end part side in the cross section of the main body part 20.SELECTED DRAWING: Figure 2

    【課題】閉じ断面部を有するアッパフレームを備えた乗物用シートのバックフレーム構造において、ねじり剛性を確保しながら重量の増加を抑制できる構造を提供する。【解決手段】バックフレーム10は、上下方向に延びる右サイドフレーム11と、左サイドフレーム12と、右サイドフレーム11及び左サイドフレーム12の上端部側の間を架け渡し状に連結するアッパフレーム13と、を有する。アッパフレーム13は、下方に開口する略逆U字状の横断面を有する本体部20と、本体部20の横断面における開口端部側のうち少なくとも一部を塞ぐように取付けられた蓋部材30と、を有する。【選択図】図2


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    Title :

    BACK FRAME STRUCTURE OF VEHICULAR SEAT


    Additional title:

    乗物用シートのバックフレーム構造


    Contributors:

    Publication date :

    2017-11-30


    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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