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US 5,476,303 AGranted
Undercarriage structure of motor vehicle
AssigneeMazda Motor Corporation
InventorsToshinori Sakamoto, Mitsuru Fujinaka, Keisuke Tanaka, Toshiyo Mito, Hayatsugu Harasaki, Tohru Furusawa
Life of this patent
Estimating the term…
Abstract
An undercarriage structure of a motor vehicle has a pair of front frames, a pair of floor frames integrally connected with rear ends of the front frames, a floor panel attached to the floor frames, and side sills extending in a front/rear direction and being connected with the sides of the floor frames. The floor frames, the side sills and the floor panel together form closed sections extending in the front/rear direction.
Claims14
An undercarriage structure of a motor vehicle comprising:
- a frame comprising:
- a pair of right and left front frame portions members extending in a front and rear direction and including a pair of front frames and a pair of floor frames integrally connected with rear ends of the front frame portions;
- a floor panel attached to upper surfaces of the frame;
- and
- a pair of right and left side sills extending in said front and rear direction at opposite lateral sides of said floor panel;
- wherein said frame (1) extends downwardly to a lower surface of the floor panel at a front end side of the floor panel to form first closed sections together with the floor panel, (2) curves outwardly in a vehicle width direction at the front end side of the floor panel so as to be connected with said side sills, (3) extends toward a rear side of the vehicle parallel to the side sills while connected to the side sills, and (4) forms second closed sections together with both the floor panel and the side sills.
3 more elements
An undercarriage structure of a motor vehicle comprising:
- a pair of right and left frame members extending in a front and rear direction and including a pair of front frames and a pair of floor frames integrally connected with rear ends of the front frames;
- a floor panel attached to upper surfaces of the frame members;
- and
- a pair of right and left side sills extending in said front and rear direction at opposite lateral sides of said floor panel, each said side sill comprising inner and outer panels;
- wherein said floor panel includes a tunnel portion extending in a vehicle width direction with an upwardly convex cross section at an intermediate portion in the front and rear direction thereof and said side sill inner and outer panels form closed sections extending in said front and rear direction, said panels extending upwardly so as to be enlarged along end portions of the tunnel portion at sides of the tunnel portion.
2 more elements
Dependencies are inferred from the claim text.