Mazda Motor Corporation

Mazda Motor Corporat Ion

Y-tec Corporation

Hiroto Kido

Yasushi Ishikawa

Atsushi Kawamoto

Yuuki Uchiba

Daisuke Kanamaru

Satoshi Nakamura

Masanobu Fukushima

Susumu Sano

Hiromasa Honji

Fumihiro Kurohara

Manabu Hashimoto

Yasunori Takahara

Kuniyoshi Tashiro

Akira Sone

Ippei Kuroda

Keizo Kawasaki

Isamu Kizaki

Takashi Narahara

Hiroyuki Okamoto

Norio Asano

Ken Fujimoto

Takahiro Aonuma

Seigo Suzuki

Masayoshi Takahashi

Hiroki Kimura

Kazuto Ishii

Kosuke Mukaigawa

Yasunari Jinbo

Satoshi Okano

Ayaka Fukuda

Taiga Kamikawaji

Masanoba Fukushima

Takehito Kobayashi

Hokuto Mukai

A front side frame provided on each of right and left sides of the vehicle and extending in a vehicle longitudinal direction; and a bumper beam provided on a vehicle front side of each of the front side frames and having an inclined section in each end portion in a vehicle width direction, the bumper beam extending outward in the vehicle width direction and being inclined rearward in. A crash can is provided in a front end portion of each of the front side frames, extends forward, and is inclined outward in the vehicle width direction. A front end portion of each of the crash cans is coupled to the respective inclined section of the bumper beam. On an inner side in the vehicle width direction of each of the crash cans, a vulnerable portion is provided, and has low strength against a collision load input to the bumper beam.

Vehicle front body structure

A front vehicle-body structure of a vehicle includes: side frames of a suspension subframe; a cross member connecting front-end portions of the side frames in the vehicle width direction; a front beam member; and a connecting member connecting a front-end portion of each side frame to the front beam member. A high-rigidity portion having a higher rigidity than other portions of the side frame is at a connecting portion between the front-end portion of the side frame and the cross member. The front beam member has a side end portion extending on a vehicle-width-direction outer side relative to a connecting position with the connecting member. A protrusion portion protruding from the side end portion toward a vehicle rear side is to come into contact with the high-rigidity portion from the vehicle-width-direction outer side when a collision load from a vehicle front side is input to the side end portion.

Front vehicle-body structure of vehicle

A subframe structure of a front suspension that leads a subframe and a vehicle driving apparatus to the lower side after separation of a rear portion of the subframe due to a frontal collision without increasing weight and parts. A subframe structure of the front suspension provides a subframe that supports a vehicle driving apparatus in a mounting manner, and a rear portion of the subframe is mounted on a lower portion of a vehicle body via a fastening member. Fastening between the subframe and the fastening member is configured such that the rear portion of the subframe is separated when a collision load to a vehicle rear side is applied to the subframe. A leading guide portion that abuts against the fastening member and leads the subframe to a lower side after separation from the fastening member is integrally formed on the rear portion of the subframe.

Subframe structure of front suspension

A fragile portion is provided at a portion of a suspension arm which is positioned near a vehicle-body attachment portion. The fragile portion is configured such that when a load which is greater than a specified magnitude is inputted to a front wheel from a vehicle forward side, the suspension arm is bent at the fragile portion, whereby the front wheel is rotated rearwardly around the fragile portion.

Vehicle and suspension arm

A reinforcing member is provided inside a closed cross section of a front side frame at a position, in a vehicle longitudinal direction, which corresponds to a forming position of a bead. The reinforcing member extends between an outward side wall portion and an inward side wall portion of the front side frame. The reinforcing member is joined to the outward side wall portion and the inward side wall portion of the front side frame. A joint length, in the vehicle longitudinal direction, of the reinforcing member and the inward side wall portion is set to be longer than that of the reinforcing member and the outward side wall portion.

Vehicle-body structure

A vehicle body structure includes a frame extending in a vehicle longitudinal direction outside a power train in a vehicle width direction, the power train being mounted on a front portion of a vehicle. The vehicle body structure further includes a load receiving portion expanding outward in the vehicle width direction from a front end of the frame and configured to receive impact load acting upon front collision of the vehicle outside the frame in the vehicle width direction, a cutout portion provided at the front end of the frame and cut out rearwardly from the front end of the frame to leave two side portions, and a connection member connecting the side portions of the cutout portion in the vehicle width direction.

Vehicle body structure

A dash cross member which extends in a vehicle width direction is provided at a dash panel. A hinge-pillar reinforcing member which rigidly connects a hinge pillar to a side sill is provided at a lower end portion of the hinge pillar. A load-transmission portion (a dash reinforcement) to transmit a load which is inputted to the hinge-pillar reinforcing member in an inward direction of the vehicle width direction to the dash cross member is provided at the dash panel.

A frame (extension frame) extending in a vehicle longitudinal direction on an outward side, in a vehicle width direction, of a powertrain mounted at a front portion of a vehicle includes front-side and rear-side high strength portions which are spaced apart, in the vehicle longitudinal direction, from each other and a low strength portion which is positioned, in the vehicle longitudinal direction, between the both high strength portions. The low strength portion has a lower bending strength than each of the both high strength portions. A specified portion which is a part of the low strength portion is positioned on the outward side, in the vehicle width direction, of and in front of a part of the powertrain (oil pan) which is located at the same level as the specified portion of the frame.

Vehicle with high-strength frame members

Provided is a frame structure of a vehicle comprising a front side frame; a reinforcing member disposed in a closed cross section; and an inner bead portion which is formed from a plurality of ridgelines extending vertically on a side wall of the front side frame and projects inwardly into the closed cross section, in which the side wall has the front inclined planar portion which includes a line connecting the upper end portion of the intermediate ridgeline with the middle portion of the front ridgeline; and the rear inclined planar portion which includes a line connecting the upper end portion of the intermediate ridgeline with the middle portion of the rear ridgeline, and the reinforcing member is joined to the front proximal portion and the rear proximal portion of the intermediate ridgeline, which are the front and rear inclined planar portions.

Frame structure of vehicle

The strength of an instrument panel member () at a portion thereof between a steering shaft support part () and a linking part () on the side near a steering shaft () is set lower than the strength of the instrument panel member () at a portion thereof between the steering shaft support part () and a linking part () on the far side from the steering shaft (), with respect to a load input through the linking part () on the side near the steering shaft () in the vehicle body front-rear direction. The above configuration makes it possible to suppress movement of a steering wheel inward in the vehicle width direction to thereby securely restrain a vehicle occupant by an airbag at the time of a vehicle frontal collision.

Vehicle-occupant protection structure and vehicle-occupant protection method

A rear apron panel is provided between a suspension tower and a dash panel. A vertical branch brace is provided to extend upwardly from a front side frame along an inner face of a suspension tower to form a closed cross section with a rear portion of the suspension tower. A deformation restraint member interconnects the apron frame and the vertical branch brace. Accordingly, there is provided a vehicle-body front structure which can restrain the apron frame from deforming outwardly in the vehicle width direction in the vehicle frontal collision to prevent the dash panel from moving back into the vehicle compartment too much.

Vehicle-body front structure

A battery is arranged at a specified position which is located on an outside of a front side frame in a vehicle width direction and between a front wheel and a crush can in a vehicle longitudinal direction. Accordingly, the battery can be positioned properly at a front portion of a vehicle so that the battery may not receive any improper thermal influence from an engine or a motor and not hurt the function of impact absorption in a vehicle frontal collision.

Battery arrangement structure of vehicle

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Aki-gun, Japan

Hiroto Kido