Patent ID: 6447019
Filing Date: 2002-09-10
Classification: F16L

Abstract:
A tube joint comprising:a joint body having a tube connection mechanism for attaching a detaching a tube and including a first passage formed at the inside to make communication with said tube; and a coupling member coupled integrally with said joint body and provided with a second passage communicating with said first passage, said tube connection mechanism further comprising: a chuck member for fastening said tube by the aid of a pawl that bites into said outer circumferential surface of said tube; a buffer member for absorbing a load applied to said chuck member when said tube is attached or detached; a seal member for functioning as a seal by surrounding an outer circumferential surface of said tube to be inserted, said seal member comprising an annular packing non-circular in cross-section and having a lip section projecting radially inwardly to make contact with said outer circumferential surface of said tube to effect sealing; and a stopper member disposed between said buffer member and said seal member for preventing sliding movement of said seal member by fixing said seal member, and wherein said buffer member is held by said stopper member, said stopper member having an annular configuration with a longitudinal cross-section being in a substantially L-shaped configuration.