Mazda Motor Corporation

Hideyuki Tsukamoto

Akiyoshi Masuda

Hidenori Matsuoka

Ken Yamada

Shigeaki Watanabe

Kouji Matsushita

Koji Matsushita

Nobuyuki Nakayama

Takashi Hamada

Soukichi Kikuchi

Masahide Kanemori

Akihiro Kawano

Shin Murata

Mitsuo Iwano

Tomohiro Eiju

Yasutomo Abe

A rear vehicle-body structure comprises a rear-floor front part on which a rear seat is placed and which is inclined such that a front side thereof is located at a higher level than a rear side thereof, a right-and-left reinforcing extension having a rear end that is positioned on both sides, in a vehicle width direction, of the rear-floor front part. The right-and-left reinforcing extension extends forwardly and inwardly, in the vehicle width direction, from the rear end. The rear vehicle-body structure further includes a right-and-left second reinforcing extension provided on an outward side in the vehicle width direction of the right-and-left first reinforcing extension, and is configured to extend forwardly and outwardly in the vehicle width direction from a vicinity of the rear end of the right-and-left first reinforcing extension.

Rear vehicle-body structure of vehicle

A rear vehicle-body structure comprises a floor of the vehicle-body, a right-and-left rear frame extending in a vehicle longitudinal direction on both-sides of a rear of the floor, a rear cross member extending in a vehicle width direction and interconnecting a front of the right-and-left rear frame, and a right-and-left reinforcing member directly or indirectly connecting a tunnel portion provided in front of the rear cross member. The right-and-left reinforcing member is provided on the floor so as to extend forwardly and inwardly in the vehicle width direction from the rear cross member toward the tunnel portion, and respective front end portions of the right-and-left reinforcing member overlap each other and are joined to the floor.

Rear vehicle-body structure

A recessed portion is formed at a frame member provided at a rear portion of a vehicle body and having a closed cross section extending in a vehicle longitudinal direction such that a part of a lower face of the frame member is recessed upwardly, where a damper of a rear suspension is inserted and fixed. A front portion of the frame member is joined to a side sill extending in the vehicle longitudinal direction at a position offset outwardly in a vehicle width direction from the frame member. Branch-shaped closed cross sections branching off from the closed cross section inwardly and outwardly relative to the damper are formed at a position corresponding to the recessed portion of the frame member. A portion of the frame member located at the above-described position is wide outwardly.

A recessed portion is formed at a frame member provided at a rear portion of a vehicle body and having a closed cross section extending in a vehicle longitudinal direction, wherein the recessed portion is configured such that a lower face of the frame member is recessed upwardly and a damper is inserted into and fixed to the recessed portion. Closed cross sections are formed inside the frame member at a position corresponding to the recessed portion. These closed cross sections are configured to branch off from the closed cross section outwardly and inwardly relative to the damper. A reinforcing member is fixed to the frame member and a wheel house inner at the position corresponding to the recessed portion such that a space is formed at a corner portion of these.

A recessed portion is formed at a lower face of a frame member provided at a vehicle rear portion and having a closed cross section extending in a vehicle longitudinal direction, where a damper of a rear suspension is inserted into and fixed. A front portion of the frame member is joined to a side sill extending in the vehicle longitudinal direction at a position offset outwardly from the frame member. Branch-shaped closed cross sections branching off from the closed cross section inwardly and outwardly relative to the damper are formed at a recessed-portion corresponding position. A front portion of the frame member located in front of the recessed-portion corresponding position extends in an oblique direction forwardly and outwardly and a front end of the frame member is joined to a rear portion of the side sill.

A recessed portion is formed at a frame member provided at a rear portion of a vehicle body and having a closed cross section extending in a vehicle longitudinal direction such that a part of a lower face of the frame member is recessed upwardly, where a damper of a rear suspension is inserted and fixed. Closed cross sections are formed at a position corresponding to the recessed portion, in a longitudinal direction, of the frame member. The closed cross sections are configured to branch off from the closed cross section inwardly and outwardly in the vehicle width direction relative to the damper. A ridgeline extending in the vehicle longitudinal direction is formed at least at a portion of the frame member which is positioned in front of the recessed portion.

A rear vehicle-body structure of a vehicle comprises a wheel house provided at a side face portion of a vehicle-body rear portion, a side frame extending in a vehicle longitudinal direction on an inward side, in a vehicle width direction, of the wheel house, a suspension comprising a damper provided to extend in a vehicle vertical direction for damping a vertical load inputted from a wheel thereto and a bump stopper provided on a shaft center of the damper, and a suspension housing including a support face portion for supporting the damper and provided to connect the side frame and the wheel house, wherein the suspension housing comprises a peripheral wall portion which is provided to extend downward from the support face portion and enclose the bump stopper at least partially.

A rear vehicle-body structure of a vehicle comprises a wheel house, a side frame, a suspension comprising a damper and a spring, and a suspension housing connecting the side frame and the wheel house. The suspension housing includes a supporting part for supporting the damper and a spring receiving part for supporting an upper end portion of the spring at a position located on an outward side, in a vehicle width direction, of the side frame and on an upward side, in a vehicle vertical direction, of a lower end of the side frame. Further, connection portions connecting, in the vehicle vertical direction, the side frame and the spring receiving part are provided on a downward side, in the vehicle vertical direction, of the spring receiving part.

A rear vehicle-body structure of a vehicle comprises a wheel house, a side frame, a suspension comprising a damper, and a suspension housing connecting the side frame and the wheel house. The suspension housing includes a support face portion for supporting the damper, a level floor portion which extends outward from its connection portion to the side frame, and a vertical wall portion which extends upward from an outward-side edge portion, in a vehicle width direction, of the level floor portion up to an inward-side edge portion, in the vehicle width direction, of the support face portion.

A reinforcement is configured to have a corner portion corresponding to a corner portion of a side sill inner. Herein, the corner portion of the reinforcement forms a reinforcement ridgeline extending in a vehicle longitudinal direction. The reinforcement is provided such that the reinforcement ridgeline and a side-sill-inner upper ridgeline formed at a corner portion of the side sill inner overlap with each other over a range from a specified area where a wheel outward displaced in a vehicle collision is capable of contacting a side sill to a connection portion where a cross member connects to the side sill inner.

Growing community of inventors

Hiroshima, Japan

Hideyuki Tsukamoto