To provide a floor cross-member which enables weight reduction of vehicle body and has excellent vibration-damping properties.SOLUTION: A floor cross-member 1 according to the present invention, in a vehicle body structure including: a floor 3; a pair of side sills 5 provided on both ends of the floor 3 in a width direction of a vehicle body and extends in a longitudinal direction of the vehicle body; a floor tunnel 7 located in a central part of the floor 3 in the width direction of the vehicle body and extends in the longitudinal direction of the vehicle body; and a floor frame 9 which extends in the longitudinal direction of the vehicle body between the floor tunnel 7 and the side sill 5 and is fixed to a lower surface of the floor 3, is arranged such that one end is fixed to the side sill 5 and the other end is fixed to the floor tunnel 7 on an upper surface of the floor 3 and the floor cross-member intersects the floor frame 9 in a plan view and comprises: a hat cross-section member 11 which has a top plate 11a, vertical walls 11b and a flanges 11c; a resin 13 affixed or applied to the inner surface and/or outer surface of the hat cross-section member 11; and a reinforcing plate 15 laid out to cover the resin 13 and is bonded to the resin 13.SELECTED DRAWING: Figure 1

    【課題】軽量化が可能で、制振性にも優れるフロアクロスメンバを提供する。【解決手段】本発明に係るフロアクロスメンバ1は、フロア3と、フロア3の車体幅方向の両端部に設けられて車体前後方向に延在する一対のサイドシル5と、フロア3の車体幅方向中央部に位置して車体前後方向に延在するフロアトンネル7と、フロアトンネル7とサイドシル5との間で車体前後方向に延在してフロア3の下面に固定されるフロアフレーム9とを備えた車体構造において、フロア3の上面において、一端がサイドシル5に、他端がフロアトンネル7にそれぞれ固定され、平面視でフロアフレーム9と交差するように配置されるものであって、天板部11a、縦壁部11b及びフランジ部11cを有するハット断面部材11と、ハット断面部材11の内面及び/又は外面に貼付又は塗布された樹脂13と、樹脂13を覆うように配設されて樹脂13と接着された補強板15とを備えてなる。【選択図】 図1


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    Title :

    FLOOR CROSS-MEMBER


    Additional title:

    フロアクロスメンバ


    Contributors:

    Publication date :

    2023-05-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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