| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a flexible pipe joint structure for suppressing increase in the cost and weight of a product, and suppressing mud deposition and flow passage losses. <P>SOLUTION: A spigot pipe 2 having a fitting slide portion 2A slidable around the center of a sphere along a partial spherical inner circumferential surface 1a is bendably fitted and connected to a socket pipe 1 having the partial spherical inner circumferential surface 1a. The fitting slide portion 2A of the spigot pipe 2 comprises a cylindrical main fitting slide body 2b which is located on a tip side of an outer circumferential surface of a straight pipe portion 2B of the spigot pipe 2 and provided with a partial spherical outer circumferential surface 2a sliding along the partial spherical inner circumferential surface 1a of the socket pipe 1, and a substantially plate-like sub fitting slide body 2d which is located on the center side in the direction of the axis X of the spigot pipe 2 and provided with a substantially plate-like sub fitting slide body 2d having an outer surface 2c sliding along the partial spherical inner circumferential surface 1a of the socket pipe 1. <P>COPYRIGHT: (C)2004,JPO</p> |
