| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve such problems of an electric fusion universal joint of thermoplastic resin comprising a receiving member provided with a spherical receiving part and a ball-shaped connection part slidably installed on the receiving part that shrinkage quantity due to internal stress at the time of fusion is unequal, and that it is difficult to achieve tight adhesion of the whole fused part, which causes unstable fluidity of resin. <P>SOLUTION: The receiving member 11 has a socket 13 at one end to which a tube end part of a plastic tube is inserted, and a columnar receiving part 14 at the other end. On an outer circumferential surface of the receiving part, a step 17 to regulate movement of a saddle part installed on the receiving part is formed. The connection member 12 has the saddle part 21 at one end, and a spigot 22 at the other end for a tube end part of a plastic tube to be inserted. The saddle part 21 has a flange 23 to be installed on the receiving part 14. It slides to rotate for prescribed quantity till the flange 23 hits the step 17, so that its movement is regulated. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
