Abstract

The present invention relates to a tube fastening tool provided with a coupling protrusion and a check marking. A tube fastening tool (100) connects two left and right tubes (200) and (300) to each other. The tube fastening tool (100) includes: a body (110) that is positioned in the middle between the left and right tubes (200) and (300), wherein the tip ends of the left and right tubes (200) and (300) are respectively inserted therein; left and right nuts (120 and 130) that are coupled to the left and right connection portions (111 and 112) of the body (110), respectively; and first and second sealings (140 and 150) that perform an airtight function between the left and right connection portions (111 and 112), the left and right nuts (120 and 130), and the left and right tubes (200) and (300). The check marking is formed at coupling grooves (118) which are formed in both end portions of a body unit (115), and the coupling grooves (118) are formed to have a constant length from a coupling step (119) in a tube center line direction so that the coupling protrusions (121 and 131) can be moved in the coupling grooves (118). According to the present invention, a convenient and reliable fastening can be performed between the connection portions, the nuts, and the tubes of the body and leakage can be prevented through the coupling and separating operations of the coupling protrusions and coupling step by means of an elastic force. In addition, since the check marking is formed in the coupling groove (118), the coupling and separation of the coupling protrusions (121 and 131) to and from a coupling groove step can be confirmed.

IPC Classes  ?

• F16L 19/06 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
• F16L 21/08 - Joints with sleeve or socket with additional locking means

Abstract

The present invention relates to a tube connection tool having a coupling protrusion. The tube connection tool (100) for connecting two left and right tubes (200 and 300) together includes: a body (110) that is disposed in the middle of the left and right tubes (200 and 300) and into which tips of the left and right tubes (200 and 300) are inserted, respectively; left and right nuts (120 and 130) that are coupled to left and right connection portions (111 and 112) of the body (110), respectively; and first and second seals (140 and 150) providing a seal between the left and right connection portions (111 and 112), the left and right nuts (120 and 130), and the left and right tubes (200 and 300). Coupling protrusions (121 and 131) are formed in the downward direction at inner radial portions of tips of the left and right nuts (120 and 130) and a coupling flange (119) is formed in the upward direction in both end portions of the body unit (115) of the body (110) such that the coupling protrusions (121 and 131) are coupled to the coupling flange (119) to ensure proper coupling when the left and right nuts (120 and 130) are coupled to the left and right connection portions (111 and 112) of the body. Also, when the connection between the left and right nuts (120 and 130) and the left and right connection portions (111 and 112) of the body are released, the coupling protrusions (121 and 131) are separated from the coupling flange (119) so as to release the connection.

IPC Classes  ?

• F16L 19/06 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
• F16L 21/08 - Joints with sleeve or socket with additional locking means

Abstract

The present invention relates to a tube fastener (100) for connecting two right and left tubes (200) (300), comprising: a body (110) which is placed in the middle of the right and left tubes (200) (300) and into which the front ends of the right and left tubes (200) (300) are inserted; right and left nuts (120, 130) coupled to right and left connection portions (111, 112) of the body (110), respectively; and first and second sealings (140, 150) for sealing between the right and left connection portions (111, 112), the right and left nuts (120, 130) and the right and left tubes (200) (300). Body inclined portions (113, 114) are formed on the inner diameter of the right and left connection portions (111, 112) of the body (110), and a first sealing front inclined portion (141) of the first sealing (140) is coupled to the body inclined portions (113, 114), respectively. In addition, a first sealing back inclined portion (142) is formed on the back surface of the first sealing (140), and a second sealing front inclined portion (151) of the second sealing (150) is coupled to the first sealing back inclined portion (142). The present invention can conveniently and reliably seal between the right and left connection portions (111, 112), the right and left nuts (120, 130) and the right and left tubes (200) (300) by the first sealing and the second sealing with an O-ring interposed therebetween.

IPC Classes  ?

• F16L 19/065 - Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring
• F16L 21/08 - Joints with sleeve or socket with additional locking means