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US 6,447,019 B1Granted
Tube joint
AssigneeSMC Corporation
InventorsMasayuki Hosono, Hiroshi Nakatsuka
Life of this patent
Estimating the term…
Abstract
A tube joint including a joint body having a tube connection mechanism at one end and a coupling member coupled integrally with the other end of the joint body, where the tube connection mechanism is provided with a packing surrounding an outer surface of a tube to be inserted to function as a seal, and a stopper member for fixing the packing to prevent sliding movement.
Claims19
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.
6 more elements
A tube joint comprising:
- a joint body having a tube connection mechanism for attaching and 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,
- wherein said tube connection mechanism is provided with a seal member for functioning as a seal by surrounding an outer circumferential surface of said tube to be inserted, and a stopper member for preventing sliding movement of said seal member by fixing said seal member,
- wherein a cylindrical bush is interposed between said joint body and said coupling member, and wherein a first annular projection for being fitted to a first fastening groove of said coupling member is formed on an inner circumferential surface of said bush, and a second annular projection for being fitted to a second fastening groove of said joint body is formed on an outer circumferential surface of said bush.
2 more elements
A tube joint comprising:
- a joint body having a tube connection mechanism for attaching and 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,
- wherein said tube connection mechanism is provided with a seal member for functioning as a seal by surrounding an outer circumferential surface of said tube to be inserted, and a stopper member for preventing sliding movement of said seal member by fixing said seal member,
- wherein said stopper member is formed with an annular projection, and wherein said annular projection is fitted to an annular groove of said joint body, and thus said stopper member is fastened to an inner wall surface of said joint body.
2 more elements
Dependencies are inferred from the claim text.