Abstract: A surface treatment method includes covering a surface of a casting mold with a carbon film containing at least one type of nanocarbon selected from the group consisting of carbon nanocoils, carbon nanotubes and carbon nanofilaments, and further applying fullerenes to that surface. With this surface treatment method being performed on a surface (a cavity surface, etc. of a casting mold) making contact with a molten casting material such as aluminum, etc., sticking of the molten casting material to the mold is inhibited, release resistance of the product is reduced, and release effectiveness is improved. The release effectiveness lasts longer than in the case of a conventional carbon film.

Abstract: A surface treatment method includes covering a surface of a casting mold with a carbon film containing at least one type of nanocarbon selected from the group of carbon nanocoils, carbon nanotubes and carbon nanofilaments, and further applying fullerenes to that surface. With this surface treatment method being performed on a surface (a cavity surface, etc. of a casting mold) making contact with a molten casting material such as aluminum, etc., sticking of the molten casting material to the mold is inhibited, release resistance of the product is reduced, and release effectiveness is improved. The release effectiveness lasts longer than in the case of a conventional carbon film.

Abstract: In a rear vehicle-body structure of a vehicle in which a damper support portion supporting an upper end portion of a suspension damper is provided at a rear wheel house, on a vehicle-inside wall face of the rear wheel house are provided a first brace member which interconnects a front portion of the damper support portion and a rear side frame and a second brace member which interconnects a rear portion of the damper support portion and the rear side frame. Accordingly, the rigidity of the damper support portion provided at the rear wheel house can be improved easily and effectively, and this structure can have superiority in its applicability.

Abstract: In a rear vehicle-body structure of a vehicle in which a damper support portion supporting an upper end portion of a suspension damper is provided at a rear wheel house, on a vehicle-inside wall face of the rear wheel house are provided a first brace member which interconnects a front portion of the damper support portion and a rear side frame and a second brace member which interconnects a rear portion of the damper support portion and the rear side frame. Accordingly, the rigidity of the damper support portion provided at the rear wheel house can be improved easily and effectively, and this structure can have superiority in its applicability.

Abstract: A surface treatment method includes covering a surface of a casting mold with a carbon film containing at least one type of nanocarbon selected from the group of carbon nanocoils, carbon nanotubes and carbon nanofilaments, and further applying fullerenes to that surface. With this surface treatment method being performed on a surface (a cavity surface, etc. of a casting mold) making contact with a molten casting material such as aluminum, etc., sticking of the molten casting material to the mold is inhibited, release resistance of the product is reduced, and release effectiveness is improved. The release effectiveness lasts longer than in the case of a conventional carbon film.

Abstract: A support frame is provided to extend upward and rearward from a portion of a front side frame near a suspension tower substantially straight and connect to an upper portion of a hinge pillar. Accordingly, there can be provided a front structure of an automotive vehicle that can properly restrain a forward deformation of a cabin by transmitting an impact load at a vehicle frontal crash to the hinge pillar efficiently.

Abstract: A support frame is provided to extend upward and rearward from a portion of a front side frame near a suspension tower substantially straight and connect to an upper portion of a hinge pillar. Accordingly, there can be provided a front structure of an automotive vehicle that can properly restrain a forward deformation of a cabin by transmitting an impact load at a vehicle frontal crash to the hinge pillar efficiently.

Abstract: A rear body structure comprises a floor tunnel extending in a lengthwise direction from the front to the back of the vehicle body at a middle of a floor panel in a transverse direction, a floor tunnel reinforcement disposed along the floor tunnel so as to form a closed cross section between them, and a generally V-shaped gusset secured between the floor tunnel reinforcement and a package member interconnecting side walls between which a compartment is formed in the rear body.

Abstract: The present invention provides a side body structure of a vehicle having a door-opening which is opened and closed by doors, wherein an annular door-opening member is provided along said door-opening, the annular door-opening member being formed in closed cross sectional shape by a side outer panel and a side inner panel jointed to inside of the side outer panel, and wherein said door-opening member is provided with an annular reinforcement which integrally and continuously extends in an annular manner along the door opening, thereby enhancing the body rigidity of the vehicle regardless of the size of the door-opening in a vehicle having a side body with a free-style type of doors.

Abstract: A rear body structure comprises a floor tunnel extending in a lengthwise direction from the front to the back of the vehicle body at a middle of a floor panel in a transverse direction, a floor tunnel reinforcement disposed along the floor tunnel so as to form a closed cross section between them, and a generally V-shaped gusset secured between the floor tunnel reinforcement and a package member interconnecting side walls between which a compartment is formed in the rear body.

Abstract: The present invention provides a side body structure of a vehicle having a door-opening which is opened and closed by doors, wherein an annular door-opening member is provided along said door-opening, the annular door-opening member being formed in closed cross sectional shape by a side outer panel and a side inner panel jointed to inside of the side outer panel, and wherein said door-opening member is provided with an annular reinforcement which integrally and continuously extends in an annular manner along the door opening, thereby enhancing the body rigidity of the vehicle regardless of the size of the door-opening in a vehicle having a side body with a free-style type of doors.