Patent ID: 6341804
Filing Date: 2002-01-29
Classification: F16L

Abstract:
A slip-out preventive unit of a supply exhaust pipe with a supply exhaust pipe forming a faucet at one end and forming an insertion port at the other end, the slip-out preventive unit comprising:a cut window provided in the side of the faucet; a stopper formed to a rear end and to the outside of said cut window; lock member with a lock portion forming and an engagement portion extending to a tip side, said lock portion being mounted for free sliding in a longitudinal direction of the pipe toward a front end of the pipe, and said lock member being mounted such that said lock member slides in a pipe end direction and the lock portion drops down in the center direction of the pipe from at said cut window, the tip of said engagement portion being engagable from an inside; a locking bag wall for preventing said tip from escaping in a radial direction, a circumference groove which opposes said cut window and where the engagement portion with the lock portion of said lock member falls down to prevent the slip-out when the faucet of another pipe has been inserted into a stipulated position to the side of an insertion port, and after a pipe has been connected, said lock member being slidable in a pullout direction together with the pipe wherein said tip of said engagement portion of said lock member comes in contact with the locking bag wall when a force in the pullout direction acts on the pipe such that said engagement portion is retained and a pullout prevention strength can be enhanced due to a wedge action of the unit between said locking bag wall and said circumferential groove upon application of a force in the pullout direction, and upon a side of said engagement portion being pushed in for retracting the lock member together and escaping the tip of said engagement portion from said locking bag wall, the pipe can be disconnected by pulling out the insertion port side while retaining with finger tips the stopper formed to the rear end of lock member in this state.