Kojima Co., Ltd.

Aisin Seiki Kabushiki Kaisha

Toyoda Gosei Co., Ltd.

Kojima Plastics Co., Ltd.

Makoto Yokota

Chihiro Hayashi

Tomohiro Saeki

Naoyuki Fukui

Yasuhiro Kodama

Atsushi Yamazumi

Yuki Miyamoto

Daiichiro Nakano

Takashi Murate

Kazuhiko Tajiri

Yusuke Hiroi

Providing an injection mold used for producing a molded resin article which is free of a weld line, irrespective of an injection pressure of a molten resin. At least one protrusion is provided in a first region of a ring runner portion defined by an inner circumferential surface of a first communication hole extending toward a cavity and an outer circumferential surface of a pin member disposed coaxially within the first communication hole, such that the protrusion projects from either one of these surfaces and an end face of the protrusion is held in contact with the other of these surfaces. The first region is a half of a circumference of the ring runner portion and is opposite to a circumferential position at which the first communication hole and a second communication hole extending perpendicularly to the first communication hole communicate with each other, with respect to the pin member.

Injection mold and method of producing molded resin article

A cup holder includes one or two supporting members that support a container inserted into a receiving portion of a holder main body, and is arranged in a circumferential direction of the holder main body. A container having the protrusion and recess pattern on a side surface can smoothly be taken out from the receiving portion with a low risk of the supporting members interfering with other members around the holder main body.

Cup holder

A torque fluctuation absorber includes a first rotating member arranged to be rotatable, a second rotating member arranged in a rotatable manner relative to the first rotating member, a coil spring for buffering a torsion between the first rotating member and the second rotating member by means of an elastic force, and a cushion member arranged at an inside of the coil spring and buffering the torsion between the first rotating member and the second rotating member by means of an elastic force, wherein the cushion member includes an elastic member formed in a columnar shape, and an abrasion resistant member partly covering a side surface of the elastic member and including a greater abrasion resistance than an abrasion resistance of the elastic member.

Torque fluctuation absorber

Growing community of inventors

Kariya, Japan

Makoto Yokota