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: 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 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: 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 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 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 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.