Mazda Motor Corporation

Junji Kishimoto

Ryuji Nonaka

Tomohito Okuyama

Kazuhisa To

Chikara Tanaka

Toshimine Morino

Hiroshi Mizuguchi

Shin Sasaki

Atsushi Nakamura

A vehicle roof structure is provided capable of maintaining side collision performance of a vehicle even without a roof reinforcing member. The vehicle roof structure includes an annular frame that is joined to a circumferential edge of a roof panel (which includes an outer panel and an inner panel), and supports the roof panel. The annular frame has a higher rigidity than the roof panel, is arranged in an opening of a roof, and is joined to a pair of roof side rails, a front header, and a rear header.

Vehicle roof structure

A resin cowl grille is provided to cover an upper portion of a cowl box. The cowl grille includes an upper wall portion and a front wall portion separated from the upper wall portion and provided with a bending promotion portion for inducing bending deformation upon action of load from above. The front wall portion includes a body portion and attachment piece portions extending backward from the body portion and fastened to a front portion of the upper wall portion. A weak portion for load in an upper-to-lower direction is formed by the attachment piece portion.

Automobile cowl grille structure

Growing community of inventors

Hiroshima, Japan

Junji Kishimoto