An automobile includes a base that supports a seat cushion, and electric equipment disposed below the base. The base is provided with a top panel that covers above the electric equipment.

A modular vehicle body includes a pair of outer frames. An inner board space with a fixed width is defined between the outer frames. Each outer frame includes a front side board and a door sill. The front side board includes a main board provided with a vertical board having a predetermined width. A first flange is provided on a side of the vertical board. The door sill includes an inner board provided with a horizontal board having a predetermined width. A second flange is provided on a side of the horizontal board. The inner board is fixedly coupled to the main board. The first flange and the second flange form an outer edge. A width between the outer edges of the pair of outer frames is set to correspond to a width of a vehicle body.

A deck plate assembly for a truck chassis having first and second elongated frame members. Elongated rail brackets are mounted on the upper ends of the first and second frame members. Each of the rail brackets has an elongated slide slot formed in the inner sides thereof. A storage box and an airline box are positioned between the first and second frame members. A storage box support frame is slidably mounted in the slide slots of the rail brackets so as to be positioned over the storage box. The storage box is bolted to the storage box support frame. An airline box support is slidably mounted in the slide slots of the rail brackets so as to be positioned over the airline box. The airline box is bolted to the airline box support. Metal deck sections may also be slidably mounted in the rail brackets.

A method of assembling a unibody vehicle includes securing a cab back panel of a cab back panel directly to an upturned flange of a cargo box floor. A unibody vehicle assembly according to another exemplary aspect of the present disclosure includes, among other things, a cab back panel, a cargo box floor, and a passenger compartment floor. The cab back panel is secured directly to the cargo box floor. The cab back panel provides a back wall of a passenger cab and a front wall of a cargo area.

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.

A rear vehicle-body structure of a vehicle can enhance the performance of protecting a vehicle component disposed under a rear floor against a rear-end collision load. The rear vehicle-body structure of a vehicle includes a rear bumper reinforcement having a rear bumper beam extending in a vehicle width direction along a rear bumper and load absorbing parts extending from left and right ends of the rear bumper beam toward a vehicle front side, and rear side frames extending in a vehicle front-rear direction respectively along left and right side portions of a rear floor and coupled at rear ends to front ends of the load absorbing parts, with a vehicle component being disposed under the rear floor. A vertical center of the rear bumper beam is located lower than a respective vertical center of each of the rear side frames.

A vehicle rear structure includes: a pair of side sills mounted on both sides of a floor panel; a pair of rear side members coupled to the pair of side sills, respectively; and a reinforcing member mounted in an inside of each side sill. A front end of each rear side member is coupled to a rear end of each side sill, each rear side member has a front portion aligned with each side sill, respectively, the reinforcing member has a length extending from the inside of each side sill to an inside of the front portion of each rear side member, respectively, a battery housing of a battery assembly is coupled to the pair of side sills and the reinforcing member by a first bolt, and the battery housing of the battery assembly is coupled to the pair of rear side members and the reinforcing member by a second bolt.

The support stiffness of a suspension supporting portion can be improved to reduce floor vibration. Arm front-end supporting portions, each supporting a front end portion of a trailing of a rear suspension, are formed on lower portions of rear frames extending in a vehicle longitudinal direction, and each include a squared U-shape portion including outer, inner and front wall portions, with a rear side being open when viewed from the bottom, and an extending outer wall portion extending from the outer wall portion to in front of the front wall portion. The outer wall portion and extending outer wall portion are formed by a side sill inner portion joined to each rear side frame. Also, each arm front-end supporting portion includes an extending inner wall portion extending from the inner wall portion to in front of the front wall portion and joined to each of the rear side frames.

A hybrid passenger vehicle includes a chassis supported by at least one front wheel and at least one rear wheel, a body coupled to the chassis including at least one door, and a vehicle floor coupled to the chassis. The body defines an interior space configured to be occupied by at least one passenger when operating the vehicle, and the vehicle floor has a front end and a rear end. A rear wall is coupled to the rear end of the vehicle floor such that the rear wall defines a rearmost boundary of the vehicle floor. A rear suspension assembly is coupled to the chassis. The rear wall is arc-shaped, and the rear suspension assembly is located rearward of the rear wall.

A vehicle body lower structure includes: an undercover having an opening and a first fixing portion disposed around the opening; a cover member having a second fixing portion and detachably attached to the undercover to close the opening; and a fixing member configured to detachably attach the second fixing portion to the first fixing portion, the fixing member being fixed to the first fixing portion and the second fixing portion from a lower side of the undercover. The undercover includes a general portion and the first fixing portion, and at least the general portion and the first fixing portion are made of a board member having a constant thickness. The second fixing portion of the cover member is thicker than the board member. The second fixing portion of the cover member is located over an upper surface of the undercover.