Patent ID: 9004111
Filing Date: 2015-04-14
Classification: F16L

Abstract:
1. A plug for a connector, comprising: an insertion portion adapted to be inserted in a mouth portion of a cylindrical connector including a lock mechanism moving between a standby position wherein a flange portion of a pipe can pass through, and a connected position wherein the flange portion of the pipe cannot pass through; the insertion portion including an O-ring abutment portion formed in one end portion thereof and adapted to abut against an inner circumferential portion of an O-ring mounted inside the connector, the O-ring abutment portion including a hollow cylindrical shape having a concave portion with a circular shape in a cross section thereof; and a creep prevention portion for preventing a creep of the lock mechanism which is in the standby position, connected to the O-ring abutment portion and having an outer diameter smaller than that of the O-ring abutment portion for preventing interference with the lock mechanism; and a grip portion connected to the creep prevention portion such that the creep prevention portion is arranged between the O-ring abutment portion and the grip portion, and having two circular plate portions at two end portions thereof with a diameter greater than that of the O-ring abutment portion and an intermediate portion extending between the two circular plate portions.