Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Jidoshokki

Koichi Inazawa

Natsuhiko Katahira

Fujio Hori

Yasuhiro Ueno

Takaaki Kiyono

Tatsuro Nakata

Toyokazu Hirota

A joining method for joining a first member having a hole that is opened on at least one surface, to a second member including a material of which a melting temperature is lower than that of a constituent material of the first member, includes: laminating the second member on the first member so as to cover an opening of the hole; and introducing that material of the second member which is softened or melted into the hole through the opening and curing the material of the second member.

Joining method

There is provided a method of molding a fiber-reinforced plastic hollow part that is capable of molding, with ease and at low costs, a fiber-reinforced plastic hollow part, which has a varying cross-section or a bent portion, in a state in which its weight is sufficiently reduced and in a state where its wall thickness is substantially uniform. A reinforcing fiber () and a matrix resin () are laminated on the outer circumference of a preformed hollow resin core () to obtain a hollow laminate (). A pressurizing bag () is inserted and positioned inside that hollow resin core (). The hollow laminate () is positioned inside a mold (). Next, heat is applied while pressure is applied to the inside of the pressurizing bag () of the hollow laminate () positioned inside the mold, thereby integrating the resin and the reinforcing fiber.

Method of molding fiber-reinforced plastic hollow part

Provided is a method capable of easily and inexpensively molding a flanged fiber-reinforced resin hollow part with a non-uniform cross-section and a bent portion with a sufficiently reduced weight and substantially uniform thickness. To this end, a hollow laminate () is formed by laminating reinforced fibers () and matrix resin () on the circumference of a coupled body of a preformed hollow resin core () and a second core (). The second core () is pulled out from the hollow laminate () and a region of the hollow laminate (), from the second core () was pulled out, is pressed into a flange-shaped portion (). A pressurization bag () is inserted into the hollow resin core () and it is then disposed within a shaping mold (). Heat is applied while at the same time applying pressure to the inside of the pressurization bag () in the hollow laminate () disposed within the shaping mold, whereby the resin and the reinforced fibers are combined, inclusive of the flange-shaped portion ().

Flanged fiber-reinforced resin hollow part and method of molding the same

An object of the present invention is to provide a high-quality fiber reinforced resin member that enables a longitudinal yarn to be laid out, without slipping, around an outer periphery of a mandrel having at least a bent portion, thus allowing both the longitudinal yarn and a diagonal yarn to be evenly laid out, and a method of manufacturing the fiber reinforced resin member, as well as an apparatus manufacturing a fiber fabric for the fiber reinforced resin member. A fiber reinforced resin memberincludes an elongate fiber fabric formed by braiding a plurality of longitudinal yarns Q, . . . extending in a longitudinal direction of the fiber fabric and a plurality of diagonal yarns P, . . . inclined at a predetermined angle to the longitudinal direction, the fiber fabric being impregnated with resin that is then hardened. The fiber reinforced resin memberhas at least a bent portion. The longitudinal yarns Q, . . . are spirally wound at the bent portion, in a posture in which the longitudinal yarns are inclined at an angle of, for example, 10 to 15 degrees to the longitudinal direction.

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Miyoshi, Japan

Koichi Inazawa