Mazda Motor Corporation

Yusaku Yamaguchi

Yasushi Ishikawa

Ken Fujimoto

Yuichi Morita

Takashi Narahara

Toshio Sakamoto

Yusuke Desaki

Nobuyuki Shibutake

Kazuto Ishii

Miyoshi Katsuhisa

Yusuke Matsumura

Matsubara Hiroshi

Yokogi Yuji

A vehicle front body structure includes a duct member that surrounds a radiator on an inner side in a vehicle width direction of a right and left pair of crash cans. The duct member is a member that completely surrounds the radiator and includes side duct sections and an upper duct section. The side duct sections and the upper duct section are connected such that, when the duct member receives a specified load from a bumper member of a body during a frontal collision, the side duct sections and the upper duct section are disengaged from each other in the engagement sections.

Vehicle front body structure

A vehicle front body structure is provided for reliably transferring a collision load to a crash can and a front frame by preventing a bumper beam from buckling during a small overlap collision. Bending rigidity of the bumper beam in a vehicle width direction is such that 1) a bending moment generated on the bumper beam when a collision load in a direction toward a vehicle rear side is applied to an extending section, which extends outward in the vehicle width direction from a crash can fixed section, is the highest in a vehicle width direction inner end portion of the crash can fixed section on a side where the collision load is applied, and 2) the bending moment is continuously reduced as a distance from the vehicle width direction inner end portion in the vehicle width direction increases.

A front vehicle-body structure controls inward breakage of an apron reinforcement in the event of a small overlap collision, without increasing weight. Embodiments include a pair of right and left apron reinforcements extending in a vehicle front-rear direction; and a pair of right and left hinge pillars respectively connected to rear ends of the pair of apron reinforcements. A reinforcement outer member of the apron reinforcement includes a linear portion extending in the vehicle front-rear direction from a rear end of the apron reinforcement connected to the hinge pillar to an intermediate portion of the apron reinforcement. A horizontal bead, provided as a deformation facilitating portion to facilitate deformation toward an inside of a vehicle body, is disposed on an outer surface portion positioned on a vehicle-width-direction outer side of the linear portion, the horizontal bead having a reduced longitudinal rigidity toward a front side in the vehicle front-rear direction.

Front vehicle-body structure of vehicle

A side body structure of a vehicle can include: a hinge pillar; a front pillar that is coupled to an upper end portion of this hinge pillar via a bent section, extends upward to the rear, and is coupled to a front end portion of a roof side rail via a connected section; and an apron rein that extends forward from a position below the bent section in the hinge pillar, where the bent section can include an energy absorption section that is subjected to out-of-plane deformation in a longitudinal orthogonal direction of the front pillar and thereby can absorb collision energy when the collision energy, which can be directed rearward, is applied to the apron rein. The energy absorption section can be configured to include an outer bead section and an inner bead section respectively provided in an outer member and a lower inner member.

Vehicle side body structure

Growing community of inventors

Hiroshima, Japan

Yusaku Yamaguchi