A vehicle body front reinforcement assembly includes: a front side beam connected to a front of a dash panel; a side sill connected to a side end portion of a floor panel; and a torque box extending from the dash panel to the side end portion of the floor panel and connecting a rear end of the front side beam to a front end of the side sill, wherein the side sill includes: a side sill coupler coupled to a rear end of the torque box; and a side sill extension connected to a rear end of the side sill coupler and extending towards the rear of a vehicle, and wherein the side sill coupler is made of a material having a lower tensile to strength than the material of the side sill extension.

A front vehicle-body structure includes a floor panel; a side sill; a floor frame extending in a front-rear direction on a vehicle-width-direction inner side of the side sill; a first cross member connecting a front portion of the side sill to the floor frame in a vehicle width direction; and a second cross member connecting the side sill and floor frame in the vehicle width direction on a rear side of the first cross member. The floor panel has a quadrilateral closed region surrounded by the side sill, the floor frame, and the cross members, on a periphery of the closed region, and the closed region has a bead linearly extending in a direction intersecting with a virtual line connecting front and rear portions on vehicle-width-direction outer and inner sides, respectively, of the closed region to each other at an angle of 45 degrees or more in plan view.

A vehicle an underbody structure includes a bumper, a subframe, and a frame. The frame interconnects the bumper and the subframe. The frame includes first and second symmetrical halves spaced at a distance. The frame is attached to the bumper at front segments of each of the halves, and to the subframe at rear segments of each of the halves. The halves are defined by a plurality of legs formed with the front and rear segments such that the first and second halves define load paths configured to transfer energy throughout the frame.

One variation may include using a plurality of node structures to assemble a uniframe.

A motor-vehicle floor panel structure comprises a front body sub-unit, a central floor sub-unit, and a rear body sub-unit. The central floor sub-unit comprises a front floor structure including a central longitudinal tunnel, a pair of lateral longitudinal beams, connected to the front floor structure and to the front body sub-unit and two intermediate longitudinal beams which connect the central floor sub-unit to the front body sub-unit and which extend at intermediate areas between the lateral longitudinal beams and the central tunnel. The intermediate longitudinal beams are connected to the upper surface of the front floor structure and have portions which extend in a cantilever fashion from the front edge of the front floor structure and which are connected to said front body sub-unit. Due to this feature the floor structure has a lower surface which is substantially close to a regular continuous surface, so as to reduce turbulences in the air flowing under the floor panel structure during travel of the motor-vehicle, with a resulting positive impact on fuel consumption.

A chassis platform module for an electric vehicle may include: a main frame having a battery mounted thereon; and a front wheel-side support frame unit connected to a front of the main frame. The front wheel-side support frame unit may include: a pair of first support frames disposed in a width direction of a vehicle, and each having a first connection groove formed at a front end thereof; a pair of second support frames disposed at a front of the pair of first support frames, respectively, and each having a second connection groove formed at a rear end thereof; a connection frame having connection protrusions inserted into the first and second connection grooves, respectively; an adhesive part adhered to the inner circumferential surfaces of the first and second connection grooves; and a fastening member coupled to each of the connection protrusions through each of the first and second support frames.

A vehicle body front structure includes: a front side frame extending in a longitudinal direction of a vehicle body; a side frame disposed laterally outside the front side frame in a vehicle width direction and extending in the longitudinal direction of the vehicle body; and a damper housing disposed laterally inside the side frame in the vehicle width direction. The side frame extends obliquely in a frontward and downward direction from a bent portion formed in proximity to the damper housing, and has a rectangular cross-section formed by a U-shaped member having a generally U-shaped cross-section and a lid member disposed on an open side of the U-shaped member. A first bendable portion is formed at a front end portion of the side frame by setting a strength of the lid member lower than a strength of the U-shaped member.

A range includes at least two different motor vehicles with a structural body having a central underbody part delimiting a lower part of a cab. The central underbody part of the first vehicle receives two seats. The central underbody part of the second vehicle receives four seats. Each central underbody part includes first interface elements allowing mounting thereon of components associated with the function of an internal combustion drive engine mounted on a rear structural part of the structural body which is firmly attached to the central underbody part. Each central underbody part also includes second interface elements allowing mounting thereon of components associated with the function of an electric drive motor to be mounted on the rear structural part. A rear edge of the central underbody part of each vehicle is equipped with a same interface element for connection to the rear structural part of the structural body.

A vehicle front structure includes: a pair of left and right front pillars; a front wall portion provided between the pair of left and right front pillars and forming a front end of the vehicle interior; a lower wall portion extending rearward from a lower end of the front wall portion; a tunnel member formed at a middle portion of the lower wall portion in a vehicle width direction and having an upward convex shape; and a reinforcing portion laminated on and fixed to the front wall portion or the front wall portion and the lower wall portion, in which the reinforcing portion is provided so as to be inclined downward from the front pillar toward the tunnel member and forms a thick plate portion in collaboration with the front wall portion or the front wall portion and the lower wall portion.

A rear section upper face of a front side frame is connected to a front face of an inclined wall of a dashboard panel. An attachment bracket that is provided to a rear section lower face of the front side frame and that has a triangular shape in side view supports a support of a subframe. An outrigger is provided that has a vehicle width direction inner end connected to a front wall and a lower wall of the attachment bracket and to a vehicle width direction outer wall of the front side frame, and that has a vehicle width direction outer end connected to a front end of a side sill.