To reduce the weight of a vehicle body lower part and improve rigidity of the vehicle body lower part.SOLUTION: A vehicle body lower part structure includes: a floor cross member 16 which connects a side sill 12 disposed at the outer side in a vehicle width direction with a floor tunnel 14 disposed at a center of a vehicle body; seat brackets 22a, 22b, 26a, 26b which are disposed in a vehicle for and aft direction sandwiching the floor cross member 16 therebetween and connected to the side sill 12 and the floor tunnel 14 at both ends as seen in the vehicle width direction of the floor cross member 16; and a floor frame 52 extending in the vehicle fore and aft direction and disposed at a floor panel 18. At least parts of the seat brackets (for example, inner flanges 72a) are disposed at positions which overlap with the floor frame 52 in a plan view.SELECTED DRAWING: Figure 3

    【課題】車体下部重量を軽量化すると共に、車体下部の剛性向上を達成すること。【解決手段】車幅方向外側に配置されたサイドシル12と車体中央に配置されたフロアトンネル14とを連結するフロアクロスメンバ16と、このフロアクロスメンバ16の車幅方向両端部において、フロアクロスメンバ16を挟んで車両前後方向に配置されると共に、サイドシル12及びフロアトンネル14にそれぞれ連結されるシートブラケット22a、22b、26a、26bと、車両前後方向に延在し、フロアパネル18に配置されたフロアフレーム52とを備え、シートブラケットの少なくとも一部(例えば、内側フランジ72a)は、平面視してフロアフレーム52と重畳する位置に配置されている。【選択図】図3


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    Title :

    VEHICLE BODY LOWER PART STRUCTURE


    Additional title:

    車体下部構造


    Contributors:

    Publication date :

    2023-07-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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