To provide a resin tube connection joint, capable of surely and easily performing a connection work in a strongly stopped state while practically reducing the cost by dispensing with use of a resin tube with a diameter larger than necessary.
A connection cylindrical part 3 of a joint main body 12 to which a resin tube 2 is inserted includes an engagement tooth part 4 to be engaged with the inside surface 2a of the resin tube 2 to stop the resin tube 2, and a return arresting mechanism which arrests return of a fastening ring 5 fitted to the outside of the resin tube 2 to the loosening direction, when the fastening ring 5 is screwed to the joint main body 12 by a predetermined quantity, by elastically engagingly fitting a projection member 15 retained on the joint body 12 side into a recessed part 17 formed on the inside surface of the fastening ring 5.
COPYRIGHT: (C)2007,JPO&INPIT
SHIMASAKA MITSUAKI
MORI TAKASHI
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