PROBLEM TO BE SOLVED: To provide a lumbar support device of a vehicle seat which achieves the ability of supporting seated occupant's lumber part during ordinary seating and the ability of allowing the seated occupant's body to move rearward during a rear collision while adopting a general purpose mechanism part.SOLUTION: A lumbar support device 10 of a vehicle seat includes: a first support plate 11a provided within a seat back and supporting a lumber part of a seated occupant through a back pad that is a cushioning material; a rod 13 which supports the first support plate 11a on a back frame and can move forward and rearward so as to change a protruding amount of the first support plate 11a relative to the lumber part of the seated occupant; and a coil spring 11c which is disposed between the back pad and the first support plate 11a and deforms to allow movement of the lumber part of the seated occupant in a direction of the first support plate 11a when a load larger than or equal to a predetermined value is applied to the first support plate 11a.SELECTED DRAWING: Figure 2

    【課題】汎用の機構部を採用しながら通常着座時の着座乗員の腰部サポート性と、後突時の着座乗員身体の後方への移動許容性と、の両立を図った乗物用シートのランバーサポート装置を提供する。【解決手段】乗物用シートのランバーサポート装置10である。シートバック内に設けられ、着座乗員の腰部をクッション材であるバックパッドを介して支持する第1支持プレート11aと、第1支持プレート11aをバックフレームに対して支持して着座乗員の腰部に対する第1支持プレート11aの突出量を変化させるための進退動作が可能なロッド13と、バックパッドと第1支持プレート11aとの間に配設され第1支持プレート11aに所定値以上の荷重が印加されたとき変形して着座乗員の腰部の第1支持プレート11a方向への移動を許容するコイルばね11cと、を備えている。【選択図】図2


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    Titel :

    LUMBER SUPPORT DEVICE OF VEHICLE SEAT


    Weitere Titelangaben:

    乗物用シートのランバーサポート装置


    Beteiligte:

    Erscheinungsdatum :

    17.05.2018


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / A47C Stühle , CHAIRS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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