To ensure a space below a seat prior to a side impact, and further inhibit deformation of a vehicle in the event of the side impact.SOLUTION: A floor cross member structure 20 includes a pair of supports 23 and 24, an intermediate part 25, and a pair of ascending mechanisms 30 which are interposed between a side sill 14, which is disposed on a lateral part of an external side of a lower part of a vehicle body 11 in a vehicle width direction, and a floor tunnel 15 disposed in the center of the vehicle body 11 in the same direction. One of the supports 23 and 24 adjoins the side sill 14, and the other one adjoins the floor tunnel 15. The supports bear respective seat rails 17 of a seat 16 from below. Before a side impact is detected, the intermediate part 25 is located at a position where its upper surface 25a gets lower than the upper surfaces 23a and 24a of the respective supports 23 and 24. When the side impact is detected, the ascending mechanisms 30 cause the intermediate part 25 to ascend so that the height of the upper surface 25a gets equal to or lower than the height of the upper surfaces 23a and 24a.SELECTED DRAWING: Figure 1

    【課題】側面衝突前には座席の下方に空間を確保し、側面衝突時には車両の変形を一層抑制する。【解決手段】フロアクロスメンバ構造20は、車幅方向における車体11下部の車外側の側部に配置されたサイドシル14と、同方向における車体11の中央部分に配置されたフロアトンネル15との間に設けられるもので、一対の支持部23,24、中間部25及び一対の上昇機構部30を備える。両支持部23,24の一方はサイドシル14に隣接し、他方はフロアトンネル15に隣接し、座席16のシートレール17をそれぞれ下側から支持する。中間部25は、側面衝突の検出前には、自身の上面25aが両支持部23,24の上面23a,24aよりも低くなる箇所に配置される。両上昇機構部30は、側面衝突の検出時には、中間部25を、上面25aの高さが、上面23a,24aの高さ以下となるように上昇させる。【選択図】図1


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    Title :

    FLOOR CROSS MEMBER STRUCTURE OF VEHICLE


    Additional title:

    車両のフロアクロスメンバ構造


    Contributors:

    Publication date :

    2019-04-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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