Mazda Motor Corporation

Shohei Yoshida

Fumitaka Andou

Norio Asano

Ippei Kuroda

Hiroaki Takeshita

Shun Teshigahara

Kazuki Yamauchi

Takashi Hamada

Susumu Sano

Hiromasa Honji

Hiroyuki Takahashi

Yuuki Uchiba

Yosuke Sawada

Kosuke Mukaigawa

Ryota Hanate

Ichiro Tanabe

Koshi Takahashi

Kota Okano

A front suspension device comprises a suspension arm, one end of which has a front-wheel support portion to support a front wheel of a vehicle and the other end of which is positioned on an inward side, in a vehicle width direction, of the front-wheel support portion and has a vehicle-body attachment portion to be attached to a vehicle-body member of the vehicle and a damper supported at a damper support portion which is provided at a portion of the suspension arm which is positioned in the vicinity of the front-wheel support portion at a lower portion thereof and connected to the vehicle-body member at an upper portion thereof. The damper support portion of the suspension arm has a breakage ease portion to cause breakage of the suspension arm.

Front suspension device

A front suspension device for a vehicle that, when a collision load acts on a suspension arm, reduces the detachment amount of a subframe mounting portion on the rear side from a vehicle body, absorbs collision load energy, and reduces an input to a rear axially supporting portion for a subframe. The front suspension device for a vehicle includes a subframe; a suspension arm having an outer end on which a front wheel is pivotally supported, and an inner end pivotally supported with respect to the subframe; a subframe mounting portion for mounting the subframe to a vehicle body through a fastener from below on the rear side relative to a front-wheel axially supporting portion of the suspension arm; and an upward bend inducing portion for bending the suspension arm upward when a suspension arm frontal collision load is input via the front wheel to the suspension arm.

Front suspension device for vehicle

A vehicle-body front structure includes a tower portion comprising a pole portion which extends substantially vertically and a tower top portion which is positioned at an upper portion of the pole portion and projects from the pole portion longitudinally along a front side frame, constituting attachment portions of an upper arm of a front-wheel suspension. A stabilizer-support pedestal for supporting a stabilizer is provided to be connected to the pole portion and the tower top portion. Thus, the pole portion of the sub frame can be properly reinforced by using the stabilizer-support pedestal, so that the rigidity of the upper portion of the pole portion can be properly increased.

Vehicle-body front structure

A pair of right-and-left extension members which deform and absorb an impact at a vehicle frontal collision, in cooperation with a pair of front side frames, are provided. The extension members are configured to be joined to respective middle portions, in a height direction, of a pair of tower portions of a sub frame at their rear end portions, to project forward, bending outward at a level below the front side frames, and to be comprised of a pair of members having a closed cross section, respectively. The rear end portions of the extension members joined to the tower portions are positioned so that a center line of a longitudinal direction of each of the extension members at the rear end portion is located at an inward position relative to a center line of a standing-vertical direction of each of the tower portions.

Front side framesof a vehicle are each vertically connected through a corresponding one of joint membersto a cross memberconfigured to support a suspension arm below the front side frame. The joint membersare each coupled to a back end of a corresponding one of extension frames. This allows the front side framesand the cross memberto share the load experienced by the extension framesin a frontal collision of the vehicle.

Structure of front portion of vehicle body

Growing community of inventors

Hatsukaichi, Japan

Shohei Yoshida