A vehicle floor structure includes a floor member that includes an opening that is open at an end corresponding to an entrance, the opening extending toward a vehicle cabin side, and a floor panel that is supported by the floor member to cover the opening and includes an open end at a position corresponding to the entrance. The floor panel is configured by sequentially arranging and integrating unit panels in a width direction with a direction parallel to the open end serving as a longitudinal direction of the unit panels.

Floor cross members provided above a floor panel are disposed so as to form a gap between each of the floor cross members and rockers. A floor cross extension that is set with a lower withstand strength than the floor cross members connects between each of the floor cross members and the corresponding rocker.

An active air curtain apparatus is provided. The apparatus includes a duct that is formed with a suction port, a discharge port, and an air flow path from the section port to the discharge port and that is mounted to the inner surface of a bumper of the vehicle. A flap having a plate shape is operated by being supported and guided by the duct and is configured to open and close the discharge port.

A vehicle floor structure includes: a center floor; a plurality of longitudinal members attached to a bottom surface of the center floor; and a battery assembly having a battery case disposed under the center floor and a through bolt passing through the battery case, wherein the through bolt is vertically aligned with respect to at least one longitudinal member among the plurality of longitudinal members, and the through bolt is joined to the at least one longitudinal member.

A floor structure for a vehicle includes: a center floor; a plurality of longitudinal members attachably disposed on a top surface of the center floor; a plurality of seat rails disposed in the plurality of longitudinal members, respectively; and a battery assembly arranged under the center floor.

A vehicle body member manufacturing method and a vehicle body member joint portion seal structure are obtained that are capable of suppressing sinking of a sealing material filled into a recess formed by a first member and a second member. A sealing material is filled into a recess provided between a general face of an upper end portion of center pillar R/F and a general face of side rail R/F. After the sealing material has cured, sealing material is filled into the recess on top of the initial sealing material. This enables the surface of the sealing material to be levelled, thus enabling sinking at the surface of the sealing material to be suppressed.

Provided is a vehicle lower-part structure including a pair of center side members arranged under a floor of a vehicle; a first cross member and a second cross member connecting the pair of center side members; a main battery arranged in an underfloor space; one or more support plates arranged at a corner of the underfloor space; and a water tank placed on the support plate, in which the support plate is connected to both the center side member and the first or second cross member and connects the two.

A side rigidity reinforcement structure of a vehicle includes: a side sill which is extended in a front and rear direction of the vehicle and includes a side sill inner reinforcement and a side sill outer reinforcement; a first center floor cross member disposed in a width direction of the vehicle and bonded to a center floor panel; and a side arch reinforcement formed to be convex upward and having a center portion spaced apart from the center floor panel. In particular, the side arch reinforcement includes: a first end penetrating the side sill inner reinforcement so to be bonded on an inner lower surface of the side sill outer reinforcement while supporting the side sill inner reinforcement, and a second end connected to the first center floor cross member to transfer a shock force input from the side sill outer reinforcement to the first center floor cross member.

A vehicle body structure in a vehicle rear portion includes a first rear lateral ring-shaped vehicle body framework (RWC1) extending in a vehicle lateral direction in a vehicle body rear portion (1R) from vicinities of a pair of left and right damper support portions (54) supporting suspension dampers (55) and disposed in rear wheelhouses (52) at vehicle rear of side door openings (Es) of the vehicle. The vehicle body structure also includes coupling members (33) coupling longitudinal ring-shaped vehicle body frameworks (SLC) each having a substantially ring shape in a vehicle longitudinal direction to the first rear lateral ring-shaped vehicle body framework (RWC1).

A lower vehicle-body structure of a vehicle includes a first cross member disposed on an intermediate portion of a front floor panel in a vehicle front-rear direction as a bridge in a vehicle width direction; a second cross member disposed in a kick-up portion between the front floor panel and a rear floor panel as a bridge in the vehicle width direction at a position in which at least a center portion in the vehicle width direction is higher than the first cross member; and a battery unit disposed below at least the front floor panel to a rear end position of the front floor panel. A high-strength portion for the front floor panel is formed on a rear end of the front floor panel on a lower end portion of the kick-up portion, and is coupled to both of a pair of left and right side sills.