To provide a back frame of a vehicular seat, that includes a structure improved in coupling strength between side frames comprising a closed cross section structure, and an arm member to which a recliner is fixed on a lower end side.SOLUTION: A back frame comprises: a pair of side frames; an upper frame; an upper arm 15 attached to a lower end side of at least one of the side frames; and a recliner 16 attached to the upper arm 15. On the recliner 16, protruding portions 16a2 are arranged, and the upper arm 15 is formed of a recliner side member 15a and an opposing recliner side member 15b that are a pair of plate-like members facing each other. Frame holding parts 15a1 and 15b1 abut on a lower end side of at least one of the side frames from left and right directions by surface in order to be coupled. Recliner attachment parts 15a2 and 15b2 are mutually opposed at an interval, and the protruding portions 16a2 are joined to an outer peripheral edge of circular holes 18a at an outer peripheral edge of protrusion engagement holes 18c by welding.SELECTED DRAWING: Figure 7

    【課題】乗物用シートのバックフレームにおいて、閉断面構造を有するサイドフレームと下端部側にリクライナが固定されたアーム部材との結合強度を高めた構造を提供する。【解決手段】バックフレームは、一対のサイドフレームと、アッパフレームと、少なくとも一方のサイドフレームの下端部側に取付けられるアッパアーム15と、アッパアーム15に取付けられたリクライナ16と、を有する。リクライナ16には突起部16a2が設けられており、アッパアーム15は、対向する一対の板状部材であるリクラ側部材15aと反リクラ側部材15bによって形成される。フレーム挟持部15a1、15b1は少なくとも一方のサイドフレームの下端部側に対して左右方向から面当たりで当接して締結される。リクライナ取付部15a2、15b2は、間隙を有して対向するとともに突起部16a2が円孔18a1外周縁と凸部係合孔18c外周縁で溶接により連結される。【選択図】図7


    Access

    Download


    Export, share and cite



    Title :

    BACK FRAME OF VEHICULAR SEAT


    Additional title:

    乗物用シートのバックフレーム


    Contributors:

    Publication date :

    2018-12-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



    VEHICULAR SEAT BACK FRAME

    KAMIYA SHINJI / KIMURA KOJI | European Patent Office | 2021

    Free access

    VEHICULAR SEAT BACK FRAME STRUCTURE

    YASUIKE SHIGEAKI / KOMURA SHOGO / SAKURAI AKIHIRO et al. | European Patent Office | 2018

    Free access

    BACK FRAME FOR VEHICULAR SEAT

    YOSHIDA TAKETO / MIYAKE SHUHEI | European Patent Office | 2016

    Free access

    VEHICULAR SEAT BACK FRAME STRUCTURE

    YASUIKE SHIGEAKI / KOMURA SHOGO / SAKURAI AKIHIRO et al. | European Patent Office | 2021

    Free access

    BACK FRAME STRUCTURE OF VEHICULAR SEAT

    MIZOBATA HIROSHI / SUZUKI HIROYUKI / AKAIKE FUMITOSHI | European Patent Office | 2017

    Free access