Sumitomo Riko Company Limited

Takahiro Nishiyama

Kazuki Hatanaka

Hideki Shinohara

Hisashi Terayama

Ayaka Osawa

Soutaro Kumeno

A resin jointincludes an outer cylindermolded by a resin material capable of transmitting laser light and an inner cylinderdisposed facing the inner peripheral surface of the outer cylinder. An annular protrusionthat protrudes in the radial direction and extends in the circumferential direction is formed on the inner peripheral surface of the outer cylinderor the outer peripheral surface of the inner cylinder. The axial end of the resin tubeis inserted into an annular spaceand is deformed in the radial direction following the annular protrusion, and a region deformed in the radial direction has a surface that is in contact with the inner peripheral surface of the outer cylinder. The inner peripheral surface of the outer cylinderand the outer peripheral surface of the resin tubeare laser-welded.

Connection structure of resin tube and resin joint and connection method thereof

A quick connector, which can securely demonstrate the lock confirmation function by a checker when a piped body is reinserted, is provided. A checker includes reinsertion-inhibiting bosses. Thus, when a piped body is inserted through an opening of a retainer again in such a state as the checker is moved to the lock confirmation position after the piped body has been pulled from out of a housing and the retainer in such a state as the checker is moved to the release position, the reinsertion-inhibiting bosses hock up onto an annular boss, thereby inhibiting the piped body from being inserted into the retainer and housing.

Growing community of inventors

Aichi, Japan

Takahiro Nishiyama