| 摘要 |
PURPOSE:To seal a joint completely and prevent the slip-off of a tube by forming cutouts at a ferrule so as to form four chucks and providing the chuck tip inner parts with protrusions for biting into the tube. CONSTITUTION:Cutouts 1 are formed at a ferrule used for the joint of a tube made of fluororesin, PVC, or the like so as to form four chucks 2, and protrusions are provided at the tip inner sides of the chucks 2. When the tapered part of this ferrule is adhered to the tapered part of the joint body and tightened by a nut, the protrusions of the chucks bite into the tube, so that sealing performance is maintained and the tube is prevented from slipping off. Chucking is performed from the outside of the tube, so that a fluid is prevented from being soiled and the work is facilitated. |
