Mazda Motor Corporation

Isamu Kizaki

Sakayu Terada

Masanori Honda

Tomohito Okuyama

Ryuji Nonaka

Takuto Fukushima

Chikara Kawamura

Toshiyuki Gendo

Ken Ueki

Takehisa Kohira

Eri Kaiki

Kaori Suzuki

Satoshi Nakamura

Yuichi Sugimura

Noboru Shouno

Taei Shibahara

Hideaki Fujii

Daisuke Nakayama

Keizo Kawasaki

Kenji Maruyama

Masanobu Fukushima

Hirotaka Natsume

Hiroto Kido

Miho Kowaki

Yosuke Sawada

Orie Tanaka

Hidetaka Goto

Kyohei Yukita

Masahiro Asahi

Kohji Hashida

Manabu Hashimoto

In a vehicle side body structure, when a force that deforms a side door inward in a vehicle width direction acts on the side door, a second engagement section enters a clearance in the vehicle width direction of the side door, a first engagement section and the second engagement section respectively engage with a first engaged section and a second engaged section, and an engagement structure bent with the first engagement section serving as a fulcrum, so as to prevent the side door from flipping up.

Vehicle side body structure

A side sill constituting a vehicle body comprises a side sill outer and a side sill inner. Each of an upper-side side face portion (upper face portion) and a lower-side side face portion (lower face portion) of the side sill inner comprises a second bending portion (bending portion) being formed by each of the upper face portion and the lower face portion bent toward an inside of the side sill, an upper-side slant face portion and a lower-side slant portion which respectively extend toward the side sill outer in an oblique direction such that a width, in a vertical direction, of the side sill inner gradually increases, and a second upper face portion and a second lower face portion (vehicle-width-direction face portions) which respectively extend in a vehicle width direction toward an inward side, in the vehicle width direction, from the second bending portion.

Lower vehicle-body structure of vehicle

A lower vehicle-body structure of a vehicle is provided with a frame member having a closed-cross section. The frame member comprises a first portion and a second portion. The first portion comprises a compression face portion and a pair of side face portions. The side face portion comprises a bending portion, a compression-side area which is positioned on a side of the compression face portion relative to the bending portion and where a compressive stress is generated when the bending load is applied, and a tension-side area which is positioned on a side away from the compression face portion relative to the bending portion and where a tensile stress is generated when the bending load is applied. The compression-side area is configured to have higher rigidity than the tension-side area.

A side sill comprises a side sill outer and a side sill inner. Each of an upper-side side face portion (upper face portion) and a lower-side side face portion (lower face portion) of the side sill outer comprises a first bending portion bent toward an inside of the side sill. The side sill inner comprises an upper-side side face portion with a first upper face portion, an upper-side slant face portion and a second upper face portion and a lower-side side face portion with a first lower face portion, a lower-side slant face portion and a second lower face portion. The side sill inner comprises a pair of upper-and-lower second bending portions which are bent toward an inside of the side sill at respective positions between the second upper face portion and the upper-side slant face portion and between the second lower face portion and the lower-side slant face portion.

There are provided a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion. The vehicle-body frame member comprises a side sill, the front side door comprises a door panel portion provided with an inner lower portion which overlaps with the side sill in a vehicle wide view and reinforcement portions provided at three side-portions of a peripheral part of the door panel portion which are continuous and include the inner lower portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view.

Vehicle-body structure of vehicle

A vehicle-body structure of a vehicle comprises a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion, wherein the front side door comprises a door panel portion and reinforcement portions provided at a peripheral part of the door panel portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view, the reinforcement portions being made of a plate member.

A vehicle-body structure of a vehicle comprises a front side door provided so as to open and close an opening portion for entrance which is formed by a vehicle-body frame member. The front side door comprises a door panel portion and reinforcement portions provided at a peripheral part of the door panel portion such that at least part of the reinforcement portions overlaps with the vehicle-body frame member in a vehicle side view, the reinforcement portions being configured to reinforce the door panel portion such that when a collision load is inputted to the front side door in a vehicle side collision, a connection state of the door panel portion and the vehicle-body frame member is maintained.

There are provided a vehicle-body frame member forming an opening portion for entrance at a vehicle side part and a front side door provided so as to open and close the opening portion. The vehicle-body frame member comprises a side sill, the front side door comprises a door panel portion provided with an inner lower portion which overlaps with the side sill in a vehicle wide view and reinforcement portions provided at two side-portions of a peripheral part of the door panel portion which are continuous and include the inner lower portion such that the reinforcement portions overlap with the vehicle-body frame member in a vehicle side view.

A side door comprises a door panel portion and a reinforcement portion (a lower-side reinforcement portion and others). The door panel portion is provided to cover an opening portion for entrance and configured such that its peripheral part overlaps with an opening-portion-forming vehicle-body frame member (a side sill and others) in a vehicle side view. The reinforcement portion is provided at the peripheral part of the door panel portion such that it overlaps with the opening-portion-forming vehicle-body frame member in the vehicle side view, thereby reinforcing the peripheral part of the door panel portion against a collision load applied to the side door from a vehicle side. The reinforcement portion is provided at a portion of the peripheral part of the door panel portion which includes a part corresponding to the vehicle-width-direction-extending vehicle-body frame member (a first floor cross member and others).

There are provided a pair of diagonally-extending inclination members which are formed in a substantially X shape in a plan view and provided above or below a floor panel. Each of the pair of inclination members is configured to interconnect a connection portion of one of right-and-left side sills and a hinge pillar and a connection portion of the other of the right-and-left side sills and a center pillar. Thereby, a load-transmission efficiency between a front end of the above-described one of the right-and-left side sills and the other of the right-and-left side sills can be improved in the SOL or vehicle side collisions.

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 vehicle bumper structure includes a pair of left and right crush cans, a bumper beam, an energy absorbing member and a bumper face. Each of the crush cans has an outside wall and an inside wall, the inside wall having higher longitudinal stiffness than the outside wall. When a full-wrap collision occurs at a speed below a specified speed limit, neither of the two crush cans crushes but the energy absorbing member and the bumper beam warp and absorb impact energy. When an offset collision occurs at a speed equal to or above the specified speed limit, on the other hand, one of the crush cans sufficiently crushes and absorbs impact energy in a reliable fashion.

Growing community of inventors

Hiroshima, Japan

Isamu Kizaki