Central Motor Wheel Co., Ltd.

Fuji Polymer Industries Co., Ltd.

Shinji Yamada

Kazuna Tsuzuki

Takumi Kataishi

Toshiki Ogawa

Yoshiyuki Nyunoya

A manufacturing method for a wheel disc, includes forming a flange portion, wherein the flange portion is formed such that an inner mold and an outer mold having a cylindrical inner surface with a first inside radius larger than the first outside radius and placed above the inner mold coaxially to the inner mold are brought close relative to each other in an axial direction by one stroke so that the outer edge of the disc material is bent downward, and the cylindrical inner surface of the outer mold is provided with recessed portions hollowed outwardly in a wheel radial direction, the recessed portions being formed in ranges corresponding to the window portions in the wheel circumferential direction and in a range from a middle position to a bottom end in the wheel axial direction.

Wheel disc manufacturing method and wheel disc

In a step of forming a fixing groove for a wheel disk (), an inner circumferential end of a first hub hole peripheral portion () is squeezed by a protruding portion (D) of a back die (D) and a dent portion (D) of a front die (D). In this manner, a fixing groove () is formed in a back surface of the first hub hole peripheral portion (). Along with this, an excess material is pushed into the dent portion (D) so that a protrusion () is formed on a front surface of the first hub hole peripheral portion (). Thus, without requiring a step of cutting the excess material, the fixing groove () can be formed in a back surface of a hub hole peripheral portion ().

Automobile wheel disk

Disclosed is a wire array rubber connector (), including: an electrical insulating rubber (); and a plurality of conductive metal wires () that are arrayed in a thickness direction of the electrical insulating rubber so as to pass through front and back surfaces of the electrical insulating rubber, and localized so as to be electrically connectable to electrical terminals that are disposed at predetermined positions on the front and back surfaces of the electrical insulating rubber. The electrical insulating rubber () is a flame-resistant rubber achieving V-0 based on the UL-94 standard. This wire array rubber connector () is obtained by: mixing a plurality of conductive metal wires having a predetermined length into a liquid thermosetting electrical insulating rubber material; applying a magnetic field from a thickness direction of the rubber material using an electromagnet that is patterned in a predetermined pattern so that the conductive metal wires are arrayed in the thickness direction and localized; and curing the rubber material by heating, thereby providing the wire array rubber connector with high flame resistance and with low transmission loss in a high frequency region.

Wire array rubber connector and method for producing the same

An automotive wheel includes a wheel disc in which a hat section is provided outside a hub mounting section. A hat inner inclined surrounding section of the hat section includes an inner convex surrounding section protruding to a surface side in a curved shape, and an inner lower concave surrounding section continuously formed with an inner peripheral edge of the inner convex surrounding section, continuously formed with an outer peripheral edge of a hub surface rounded section, and protruding to the back side in a curved shape.

Growing community of inventors

Miyoshi, Japan

Shinji Yamada