Mazda Motor Corporation

Yoshio Fujii

Masafumi Sakakida

Tsuyoshi Sugihara

Takanobu Kamura

Toshiharu Ikeda

Hideharu Kaeriyama

Atsushi Nishiyama

Kohei Kirita

Kenichi Yukumatsu

Minoru Sunada

Gunji Yoshii

Kousuke Murakami

Masayuki Takamitsu

Ryuji Matsumura

Shoji Nanba

Tsutomu Naganuma

Yosuke Onda

Kenzo Kihara

A connection member which connects an outside portion of a cross member and an inside wall face portion of a side sill includes a cross-member-side connection portion connected to the cross member and a side-sill-side connection portion connected to the side sill, the side-sill-side connection portion is configured to have a lower rigidity than the cross-member-side connection portion, and an outside end portion of the cross member is located at a specified position which is located on the outside of the cross-member-side connection portion and on the inside away from the inside wall face portion of the side sill. Thereby, the impact load in the vehicle side collision can be effectively supported by the cross member with a simple structure.

Vehicle-body lower structure of vehicle

A floor is partitioned into a plurality of areas S to S by a floor tunnel portion , side frames , side sills , and cross members , and , and the rigidity of the floor panels of the areas S to S is adjusted by rigidity adjustment portions , and . These floor panels are set such that their natural frequency in a 2&times;1 mode, in which two antinodes are generated in the length direction of the automobile and one antinode is generated in the width direction of the automobile, is 240 to 260 Hz. Thus, a reduction in road noise due to automobile tire cavity resonance is achieved.

Automobile floor structure

A vehicle body structure has a chassis frame to which a pair of side sills are rigidly connected sideways by a plurality of connecting bracket assemblies. One of the connecting bracket assemblies is disposed between a pair of pillars and includes an outer bracket member connected to each side sill and an inner bracket member connected to the chassis frame.

Body structure of an automotive vehicle

A front body structure of a vehicle body having a chassis and a body which is formed separately from the chassis and is mounted thereon includes a shroud panel which forms a side portion of the front portion of the body. A wheel apron is connected to the shroud panel at its front portion and a body strength member is connected to a rear portion of the wheel apron. An apron reinforcement extends in the longitudinal direction of the vehicle body and is connected to the shroud panel at a front portion and to the body strength member at a rear portion. A first mount portion for mounting the body on the chassis is provided in the lower portion of the shroud panel and a second mount portion for mounting the body on the chassis is provided near the connection of the body strength member to the wheel apron. A frame extends along the outer side edge portion of the shroud panel to the body strength member and is connected to the connection of the shroud panel and the apron reinforcement at an intermediate portion thereof.

Front body structure of vehicle

A cowl region construction of a motor car, particularly a construction of a joint of a roof pillar of closed sectional construction extending in a vertical direction and a dashboard support member of closed sectional construction extending in a longitudinal direction is disclosed. An opening is formed in the dashboard support member at the region where the dashboard support member and the roof pillar are joined and a cowl panel is arranged at the front side of the dashboard support member and is spot-welded to the roof pillar.

Dashboard support construction for cowl region of a motor car

A front frame structure for a vehicle has a front side frame comprising a side frame portion which has a closed cross-section and is mounted on the side wall of the engine compartment on the front side of a dashboard panel to extend in the longitudinal direction of the vehicle body, and a floor frame portion which has a channel-shaped cross-section with the open portion upward, is connected to the rear end of the side frame portion by way of a junction bent by a predetermined angle in a vertical plane, and is mounted on the lower surface of a floor panel to extend in the longitudinal direction of the vehicle body. A front reinforcement is provided in the side frame portion and a rear reinforcement is provided in the floor frame portion. The front reinforcement and the rear reinforcement are connected together near the bent junction of the side frame portion and the floor frame portion. A gusset is fixed to the junction of the front reinforcement and the rear reinforcement to partition the front side frame in the longitudinal direction thereof.

Front frame structure for vehicle

Growing community of inventors

Hiroshima, Japan

Yoshio Fujii