Vehicle of monocoque construction formed from thermoplastic resin members

A vehicle body having monocoque construction formed by fastening together resin parts which are an upper body as an integrally molded article obtained by molding a transparent thermoplastic resin composition, a lower body as an integrally molded article obtained by molding a thermoplastic resin composition and a floor as an integrally molded article obtained by molding a thermoplastic resin composition, wherein

• the transparent thermoplastic resin composition constituting the upper body is a polycarbonate resin composition, and the thermoplastic resin composition constituting the lower body and the floor is polycarbonate resin composition or polyamide resin composition;
• the lower body has a bottom surface and a flange part rising up from an entire perimeter of the bottom surface;
• in a center of the bottom surface of the lower body, a convex rib part is formed continuously from a front part to a rear part of the vehicle body;
• at least two spaces surrounded by the flange part, the convex rib part and the bottom surface are formed in a center part of the lower body of the vehicle to allow auto parts such as a battery to be installed;
• the auto parts to be installed in the space can be fixed through fastening of the lower body and the floor;
• the upper body and the floor are mounted on the lower body, and the upper body and the floor are fastened together to the flange part and the convex rib part of the lower body;
• and
• a front suspension sub-frame to which a suspension, a brake, and a steering are attached is contacted with and fixed to a large area of the bottom surface of the lower body.