Abstract: A vehicle body rear part structure includes a rear frame and a beam member. The rear frame has: a first inner bead, a first outer bead, a second inner bead, and a second outer bead. The first inner bead and the first outer bead are formed on an inner wall and an outer wall, respectively, in a region close to the beam member. The second inner bead and the second outer bead are formed on the inner wall and the outer wall, respectively, in a region that is separated to a vehicle body frontward direction from the first beads. The first outer bead is formed to have a higher fragility than the first inner bead.

Abstract: A seat connection structure includes a reinforcing member and a rear seat. The reinforcing member reinforces a rear floor panel and left and right rear wheel houses. The rear seat is disposed in front of a vehicle body of the reinforcing member, and is connected to the reinforcing member via left and right fixing members. The left and right fixing members connect the seat back of the rear seat and the reinforcing member, and are connected to face a front surface portion of the reinforcing member formed on a front side of the vehicle body and facing a vehicle width direction.

Abstract: A vehicle body rear part includes a side sill, a rear wheel house, a rear side frame, and a close plate. An outer curve part and an inner curve part are provided in a region close to a front part of the rear wheel house of the rear side frame. An outer ridge line that extends straight in a vehicle forward direction from a position substantially directly above the vicinity of a rear end portion of the outer curve part of the rear side frame and an inner ridge line that extends to be curved to a vehicle forward side substantially along the inner curve part at a position substantially directly above the inner curve part of the rear side frame are provided on the close plate. The outer ridge line and the inner ridge line converge in an inner region in the vehicle width direction of a joint part of the rear side frame and the side sill.

Abstract: A rear part structure of a vehicle body includes: a rear side frame, extending in a front-rear direction of the vehicle body outside a floor of a rear part of the vehicle body in a vehicle width direction; a front cross member, connected to a first connection part of the rear side frame and extending inward in the vehicle width direction; a rear cross member, connected to the rear side frame by a second connection part positioned on a rear side of the first connection part and extending inward in the vehicle width direction; an arm attachment part, provided on the rear side frame and connecting a trailing arm; and a reinforcing member, extending in the vehicle width direction within a section of the rear side frame. The reinforcing member is positioned between the first connection part and the second connection part in the front-rear direction of the vehicle body.

Abstract: A rear part structure of a vehicle body includes: a rear side frame, extending in a front-rear direction of the vehicle body on an outside of a floor of a rear part of the vehicle body in a vehicle width direction; and a wheelhouse, arranged outside the rear side frame in the vehicle width direction. At least a portion of an outer wall of the rear side frame in the vehicle width direction is formed by the wheelhouse. A partition member provided within a section of the rear side frame has one end in the vehicle width direction joined to the outer wall formed by the wheelhouse, extends from the outer wall to a front side of the vehicle body and inward in the vehicle width direction, and has the other end in the vehicle width direction joined to an inner wall of the rear side frame.

Abstract: Provided is a rear structure of vehicle body, including a floor panel constituting a floor portion at a rear portion of a vehicle body; a rear side frame extending in a front-rear direction of the vehicle body outside the floor panel in a vehicle width direction; and a subframe installed below the floor panel and supporting suspension components. The rear side frame includes a subframe fastening portion to which the subframe is fastened, and the subframe fastening portion links the rear side frame and the floor panel.

Abstract: A vehicle body rear part includes a side sill, a rear side frame, a cross member, a trailing arm, an arm attachment bracket, and a close plate. In the trailing arm, a front end part is swingably supported via a mount member at a front region of the rear side frame. The arm attachment bracket is fixed into a cross section of the rear side frame and has a fixation nut with which the mount member is fastened and fixed. The bracket reinforcement member reinforces the arm attachment bracket. The close plate closes an opening on an upper side of the front region of the rear side frame. End parts on both sides in the vehicle width direction of the bracket reinforcement member are joined to the side sill and the cross member, and an upper part of the bracket reinforcement member is joined to the close plate.

Abstract: A vehicle body rear structure includes: a rear wheel house; a rear cross member located on a vehicle width direction inner side of a lower portion of the rear wheel house and extending in a vehicle width direction; a pillar extending upward from an upper portion of the rear wheel house; a wheel house reinforcing member extending along the rear wheel house and connecting between the rear cross member and the pillar; a retractor functioning as a seat belt winding device; and a bracket configured to fix the retractor to a vehicle body. The bracket has one end portion connected to the wheel house reinforcing member. The bracket has another portion extending from the one end portion in the vehicle forward direction or in the vehicle rearward direction and connected to the rear wheel house.

Abstract: A vehicle body rear structure includes: a rear frame extending in a vehicle front-rear direction on a vehicle width direction end side of a floor panel; a rear wheel house extending upward from a vehicle width direction outer portion of the rear frame; a rear cross member extending in a vehicle width direction on the floor panel; a wheel house reinforcing member extending in an up-down direction along the rear wheel house; and an upper stiffener covering an opening of the rear frame. The upper stiffener includes forward and rearward stiffeners. The wheel house reinforcing member has a lower portion connected to the upper stiffener and to the rear cross member. The forward and rearward stiffeners are connected to each other at a connecting portion located offset in the front-rear direction from a connecting portion where the upper stiffener and the wheel house reinforcing member are connected to each other.

Abstract: A vehicle body lower structure includes a front cross member, a rear side frame, a floor panel, and a front floor frame. The front cross member is disposed in front of a battery in a vehicle. The rear side frame is connected to an end portion of the front cross member on an outward side in a vehicle width direction. The front floor frame forms a closed cross section together with the floor panel and is coupled to the end portion of the front cross member on the outward side in the vehicle width direction.

Abstract: A seat connection structure includes a reinforcing member and a rear seat. The reinforcing member reinforces a rear floor panel and left and right rear wheel houses. The rear seat is disposed in front of a vehicle body of the reinforcing member, and is connected to the reinforcing member via left and right fixing members. The left and right fixing members connect the seat back of the rear seat and the reinforcing member, and are connected to face a front surface portion of the reinforcing member formed on a front side of the vehicle body and facing a vehicle width direction.

Abstract: A vehicle body includes: a vehicle body floor having a battery housing portion; a pair of left and right side sills; a front cross member disposed in front of the battery housing portion; a rear cross member disposed behind the battery housing portion; and a battery cover that covers a battery from above. A widened portion of which a height in a vertical direction increases with respect to a center region of the front cross member in a vehicle width direction and of which a front-rear width expands to a vehicle rear side with respect to a front-rear width of the center region of the front cross member in the vehicle width direction is provided on an end portion of the front cross member on an outer side in the vehicle width direction. The battery cover is made of a metal and includes an outer connecting portion connected to the widened portion on an outer side in the vehicle width direction.

Abstract: A vehicle body rear part includes a side sill, a rear side frame, a cross member, a trailing arm, an arm attachment bracket, and a close plate. In the trailing arm, a front end part is swingably supported via a mount member at a front region of the rear side frame. The arm attachment bracket is fixed into a cross section of the rear side frame and has a fixation nut with which the mount member is fastened and fixed. The bracket reinforcement member reinforces the arm attachment bracket. The close plate closes an opening on an upper side of the front region of the rear side frame. End parts on both sides in the vehicle width direction of the bracket reinforcement member are joined to the side sill and the cross member, and an upper part of the bracket reinforcement member is joined to the close plate.

Abstract: A vehicle body rear part includes a side sill, a rear wheel house, a rear side frame, and a close plate. An outer curve part and an inner curve part are provided in a region close to a front part of the rear wheel house of the rear side frame. An outer ridge line that extends straight in a vehicle forward direction from a position substantially directly above the vicinity of a rear end portion of the outer curve part of the rear side frame and an inner ridge line that extends to be curved to a vehicle forward side substantially along the inner curve part at a position substantially directly above the inner curve part of the rear side frame are provided on the close plate. The outer ridge line and the inner ridge line converge in an inner region in the vehicle width direction of a joint part of the rear side frame and the side sill.

Abstract: A vehicle body rear portion includes a side sill, a rear side frame, a cross member, a side door, a trailing arm, an arm attachment bracket, and a bracket reinforcement member. The side door includes a door beam disposed at a position overlapping an outer side of the side sill in a vehicle width direction. The trailing arm has a front end portion that is swingably supported by a front region of a rear side frame via a mounting member. The bracket reinforcement member has an outer end portion in the vehicle width direction that is directly or indirectly coupled to an internal angle portion above the side sill, and an inner end portion in the vehicle width direction that is directly or indirectly coupled to an outer end portion of the cross member in the vehicle width direction.

Abstract: A vehicle body rear part structure includes a rear frame and a beam member. The rear frame has: a first inner bead, a first outer bead, a second inner bead, and a second outer bead. The first inner bead and the first outer bead are formed on an inner wall and an outer wall, respectively, in a region close to the beam member. The second inner bead and the second outer bead are formed on the inner wall and the outer wall, respectively, in a region that is separated to a vehicle body frontward direction from the first beads. The first outer bead is formed to have a higher fragility than the first inner bead.

Abstract: A lower structure of a vehicle includes front side frames, a vehicle body strength member, a floor panel, and a power supply unit, in which the front side frames are formed to have cross-sectional shapes that open upward at least at rear sections thereof, the power supply unit is disposed below a floor panel, the floor panel includes a pair of reinforcing panel portions which are respectively joined to the rear sections of the front side frames and cover the rear sections from above, and a floor panel main body portion which constitutes a portion other than the reinforcing panel portions, and the reinforcing panel portions are formed to have higher strength than the floor panel main body portion.

Abstract: A lower structure of a vehicle includes front side frames, a vehicle body strength member, a floor panel, and a power supply unit, in which the front side frames are formed to have cross-sectional shapes that open upward at least at rear sections thereof, the power supply unit is disposed below a floor panel, the floor panel includes a pair of reinforcing panel portions which are respectively joined to the rear sections of the front side frames and cover the rear sections from above, and a floor panel main body portion which constitutes a portion other than the reinforcing panel portions, and the reinforcing panel portions are formed to have higher strength than the floor panel main body portion.

Abstract: A lower structure of a vehicle includes front side frames, a vehicle body strength member, a floor panel, and a power supply unit, in which the front side frames are formed to have cross-sectional shapes that open upward at least at rear sections thereof, the power supply unit is disposed below a floor panel, the floor panel includes a pair of reinforcing panel portions which are respectively joined to the rear sections of the front side frames and cover the rear sections from above, and a floor panel main body portion which constitutes a portion other than the reinforcing panel portions, and the reinforcing panel portions are formed to have higher strength than the floor panel main body portion.