The invention provides a bottom plate structure capable of rapidly transmitting a side collision load to a cross beam and improving support rigidity. The bottom plate structure is provided with: a lower side sill extending in the front-rear direction of a vehicle; a bottom plate panel provided on the inner side of the lower side sill in the vehicle width direction; and a rear side cross beam extending in the vehicle width direction on the upper side of the bottom plate panel. The rear side cross beam has: a front side surface section that hangs down from the front edge of the upper surface portion; a rear side surface portion hanging down from the rear edge; a pair of front and rear flange portions extending forward and rearward, respectively, from the lower ends of the front and rear side surface portions; and a U-shaped extension part extending from the outer sides of the upper surface portion, the front side surface portion and the rear side surface portion in the vehicle width direction toward the lower side sill in a cross-sectional view. The outer end portion of the extension part in the vehicle width direction is located further outward in the vehicle width direction than the outer end portions of the pair of front and rear flange portions in the vehicle width direction, and is further inward in the vehicle width direction than the side surface portion of the lower side sill.

    本发明提供能够将侧面碰撞荷载迅速地传递至横梁、且能够提高支承刚性的底板构造。该底板构造具有:沿车辆前后方向延伸设置的下纵梁;设于下纵梁的车宽方向内侧的底板面板;和在底板面板的上侧沿车宽方向延伸的后侧横梁。后侧横梁具有:从上表面部的前缘垂下的前侧面部;从后缘垂下的后侧面部;从前侧面部以及后侧面部的下端分别向前方以及后方延伸的一对的前、后侧凸缘部;和从上表面部、前侧面部以及后侧面部的车宽方向外侧朝向下纵梁延伸的剖视时コ字状的延伸部。延伸部的车宽方向外侧端部与一对的前、后侧凸缘部的车宽方向外侧端部相比位于车宽方向外侧,同时相对于下纵梁的侧面部而向车宽方向内侧远离。


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    Title :

    Bottom plate structure


    Additional title:

    底板构造


    Contributors:

    Publication date :

    2021-06-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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