| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a joint for pipe connection for enhancing the working efficiency. <P>SOLUTION: This joint D for pipe connection to connect an upper pipe disposed above a through hole 1a in a wall body 1 to a lower pipe 2 disposed below the through hole 1a or advancing into the through hole from a lower part thereof comprises a cylindrical upper connection part 5 which is disposed on a tip of the upper pipe and has a lower end part 4 with a male screw part 3 formed on an outer circumferential surface thereof, a lower connection part 7 which is disposed on a tip of the lower pipe 2 and has a small diameter part 6 with an upper end part thereof inserted in the lower end part 4 of the upper connection part 5, and a cap nut 9 which is moved along the small diameter part 6 in the axial direction thereof, and has a female screw part 8 screwed to the male screw part 3. A drop preventive means 12 to prevent the cap nut 9 from being dropped downward is provided on a lower side of the small diameter part 6. <P>COPYRIGHT: (C)2004,JPO |
