An embodiment vehicle intermediate structure includes a first intermediate crossmember connecting a pair of side sills in a width direction of a vehicle, wherein each end face of the first intermediate crossmember is attached to an inboard side surface of the corresponding side sill, and wherein a cross section of the first intermediate crossmember is uniform in a longitudinal direction thereof.

The rear structure for vehicles includes: a rear floor; and a pair of oblique members coupled to a lower surface of the rear floor and configured to be symmetrical with each other about a longitudinal centerline of the rear floor, each oblique member of the pair of oblique members extending from a first side and a second side, respectively, of the rear floor to a rear portion of the rear floor.

An embodiment upper body structure for a vehicle body includes a front body configured to be mounted on a front portion of an under body of the vehicle body, the front body including front side sills respectively disposed at two opposite sides thereof based on a vehicle width direction and center pillars respectively coupled to the front side sills, each of the center pillars including a quadrangular closed cross-section defined by coupling a center pillar outer member and a center pillar inner member and an outer flange portion extending in a forward/rearward direction of the vehicle body.

A rear vehicle body structure of a vehicle including an underbody and an upper body coupled to the underbody is provided. The rear vehicle body structure includes a rear floor panel provided in a rear part of the upper body and coupled to the rear part of the underbody, the rear floor panel including forming parts extending in a vertical direction from both sides of the vehicle, respectively.

A reinforcing structure is provided for an underbody of a motor vehicle. The motor vehicle has an axle support, in particular a rear axle support, wherein the axle support has a first and a second holder, which are spaced apart from one another in the transverse direction of the vehicle. The reinforcing structure has a transverse connecting strut and a first and a second axle support linkage. The transverse connecting strut is connected to both the first and the second axle support linkage, and the first holder of the axle support can be connected to the first axle support linkage and the second holder of the axle support can be connected to the second axle support linkage.

A protection measure for a vehicle during a side collision is provided, and an oil feeding pipe is attached to a side face of a tank. A vehicle tank structure has a pair of left and right rear frames extending in the vehicle front-rear direction, a floor panel coupling the rear frames, and a tank provided below the floor panel. A side face part of the tank includes a connection port to which an oil feeding pipe is connected, the side face part being directed toward the vehicle-width-direction outer side. A hit-first face part located on the vehicle-width-direction outer side relative to a distal end of the connection port is located above a mounting face part at which the connection port is provided.

A vehicle body rear part structure includes a pair of rear side frames on left and right sides that extend substantially along a vehicle front-rear direction; and a rear floor panel to whose front part region, where a rear seat is disposed, the pair of rear side frames are combined. A rear part region of the rear floor panel is configured by a double panel structure having an upper wall and a lower wall. The rear part region of the rear floor panel extends further to a vehicle rear side than the pair of rear side frames. Each rear end part of the pair of rear side frames includes an inclined support part that inclines toward a vehicle front side toward an inner side in a vehicle width direction. The double panel structure is combined to the inclined support part of each of the rear side frames.

To sufficiently improve the distortion stiffness of a vehicle body in a case in which no floor tunnel largely bulging upward from a floor panel is provided. A vehicle-body structure includes a floor panel constituting a floor of an occupant space including a seat on which a passenger is to sit, a cross member provided at a rear portion of the floor panel and extending in a vehicle width direction, a center frame disposed to be higher than and away from the floor panel at a vehicle-width-direction central portion of the occupant space and extending in a vehicle front-rear direction, and a connecting member connecting the cross member and a rear portion of the center frame.

An embodiment is a vehicle body including a vehicle body skeleton including a tail gate frame and a rear side member connected to a lower portion of the tail gate frame, a chassis frame including a longitudinal frame disposed in the length direction of the vehicle body, and a vehicle body rear connection structure configured to connect the vehicle body skeleton and the chassis frame, wherein the longitudinal frame is connected to an intersecting position of the lower portion of the tail gate frame and the rear side member.

An embodiment rear vehicle body structure of a vehicle including an underbody and an upper body coupled to the underbody includes a reinforcing member coupled to an upper surface of a rear floor panel provided on the rear side of the upper body and connected to both chassis frames of the underbody through the rear floor panel.