High rigidity is ensured while weight is reduced with few reinforcing members for torsion occurring in a vehicle body. In the top part of an opening (1) for installing a back door of a vehicle body rear part, a reinforcing member structural body (5) is arranged on the inner sides of a roof panel (6) and a side body panel (7) along the general form of the opening in the vehicle width direction; the reinforcing member structural body (5) has a bottom wall surface continuing at a constant width by means of front and rear ridgelines (35L, 37L); the reinforcing member structural body is formed into a substantial L shape in cross-section, having a top wall (16), a front-side vertical wall (12), and a bottom wall (13), corresponding to a flat part in the center of the roof panel; and a curve-shaped part (34) having a closed cross-sectional shape connected from the roof panel to the side body panel at the vehicle-widthwise end-side is formed in the reinforcing member structural body (5). The top wall (16), which has a narrowing front-rear width (W4) in the center thereof, curves downward continuously from the roof panel toward the side body panel together with extending farther outward in the vehicle width direction, and the front-rear width (W3) of the top wall (17) gradually widens in the curve-shaped part (34).


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    Title :

    Opening structure of vehicle body rear part


    Contributors:

    Publication date :

    2015-12-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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