To achieve both retention of a seated person's posture during normal running of a vehicle and protection of the seated person in the event of a rear surface collision of a vehicle.SOLUTION: A seat back frame 32 includes: left and right side frames 34 extending in a seat vertical direction in left and right side parts of a seat back 30 of a vehicle seat 10; a lower panel 40 (a lower frame) bridged between rear ends of lower end parts of the left and right side frames 34; and a sacrum supporting part 42 extending from the lower end of the lower panel 40 to a seat front side and supporting the sacrum part of a seated person from a seat rear side. The sacrum support part 42 is provided with a bending portion 42B1 (a fragile site) that is weakened against a load from the seat front side.SELECTED DRAWING: Figure 1

    【課題】通常の車両走行時における着座者の姿勢保持と、車両の後面衝突時における着座者の保護とを両立する。【解決手段】シートバックフレーム32は、車両用シート10のシートバック30の左右の側部内でシート上下方向に延在する左右のサイドフレーム34と、左右のサイドフレーム43の下端部の後端部間に架け渡されたロアパネル40(ロアフレーム)と、ロアパネル40の下端部からシート前方側へ延出され、着座者の仙骨部をシート後方側から支持する仙骨支持部42とを備えている。仙骨支持部42には、シート前方側からの荷重に対して脆弱化された曲げ部42B1(脆弱部)が設けられている。【選択図】図1


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    Title :

    SEAT BACK FRAME AND VEHICLE SEAT


    Additional title:

    シートバックフレーム及び車両用シート


    Contributors:

    Publication date :

    2023-07-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / A47C Stühle , CHAIRS



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