| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To simplify a waterproof structure by improving workability when connecting a flexible bellows pipe on whose apical portion a sprinkler head is mounted to a water supplying sub main pipe arranged under the roof via tees with respect to a sprinkler. <P>SOLUTION: A sprinkler joint comprises a rotatable and cylindrical first movable member 1 including an outer-circumferential thread 4 screwed into an inner-circumferential thread 3 of the tees 2; a both-end-opened and cylindrical second movable member 14 including a thread 8 screwed into an inner-circumferential thread 7 in a rear end 6 of the movable member 1, and further including a receiving stepped portion 13 for receiving a curling portion 12 which is rotatably inserted externally into a mounting portion 11 where unevenness of the bellows pipe 10 has been removed and is formed in the end of the mounting portion to be used for preventing disengagement; and an annular packing 15 contacting by pressure with at least one of a front or rear surface of the curling portion. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
