Toyota Jidosha Kabushiki Kaisha

Nitto Kohki Co., Ltd.

Goro Suzuki

Takuya Nishio

Kazunori Aoki

Shinichi Nomura

Osamu Yamamoto

Kunihiko Goto

Kosei Yoshida

Kazuyoshi Tashiro

A pipe coupling member for high-pressure fluid such as liquefied hydrogen includes a seal ring having a highly effective sealing function to prevent leakage of the fluid. The seal ring () is set in a seal ring setting space () defined by a second radial surface () and a seal ring setting surface () of a first tubular member (), a forward end surface of a second tubular member (), and the outer peripheral surface of a valve seat member (). A forward end portion of the second tubular member () is provided with a communication hole () radially penetrating the forward end portion. The pressure of the high-pressure fluid on the downstream side of a valve seat surface () causes a fluid path in the second tubular member to be communicated with the sealing ring setting space () via the communication hole () and via a gap between the seal ring setting surface () and the outer peripheral surface of the forward end portion of the second tubular member.

Pipe coupling member for high-pressure fluid

Growing community of inventors

Toyota, Japan

Goro Suzuki