The present invention relates to a front lower body structure of a vehicle having improved stiffness, which improves the stiffness in the anteroposterior direction of a vehicle having a flat center floor panel such as an electric vehicle so as to enhance collision performance and NVH performance. The front lower body structure of a vehicle having improved stiffness according to the present invention comprises: a front side rear lower member (13) connected from a front side member (12) formed on one side of a fender apron (11) to a side sill inner (17); a center floor side upper member (15) formed in the longitudinal direction of the vehicle and extending from a bottom surface of a dash panel (21) to a center floor panel; and a reinforcement bracket (22) connecting a side surface of the front side rear lower member (13) to a bottom surface of the center floor side upper member (15) and having reinforcement holes (22b) formed in the direction of connecting the front side rear lower member (13) to the center floor side upper member (15).

    본 발명은 전기자동차와 같이 센터플로어패널이 평평한 차량에서 차량의 전후방향의 강성을 향상시켜 충돌 성능과 NVH 성능이 향상되도록 한 강성이 향상된 차량의 전방 하부 차체 구조에 관한 것이다. 본 발명에 따른 강성이 향상된 차량의 전방 하부 차체 구조는, 펜더에이프런(11)의 일측에 형성되는 프런트사이드멤버(12)로부터 사이드실인너(17)로 연결되는 프런트사이드리어로워멤버(13)와, 차량의 길이방향으로 형성되어 대시패널(21)의 저면으로부터 센터플로워패널로 형성되는 센터플로어사이드어퍼멤버(15)와, 상기 프런트사이드리어로워멤버(13)의 측면과 상기 센터플로어사이드어퍼멤버(15)의 저면을 연결하고, 상기 프런트사이드리어로워멤버(13)과 상기 센터플로어사이드어퍼멤버(15)을 연결하는 방향을 따라 보강홈(22b)이 형성되는 보강브라켓(22)을 포함하는 것을 특징으로 한다.


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    Title :

    FRONT LOWER BODY STRUCTURE OF VEHICLE HAVING IMPROVED STIFFNESS


    Additional title:

    강성이 향상된 차량의 전방 하부 차체 구조


    Contributors:

    Publication date :

    2022-04-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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