| 摘要 |
<p>An expansion flexible tube joint A comprising a first cylindrical body (1) having a pair of spherical surface ring materials each formed with partially spherical outer surface (4), a second cylindrical body (2) comprising a sleeve inserted into the first cylindrical body (1) for relative movement thereof from an axial direction thereof, the sleeve provided at its end portion with stopper means (27, 37) for limiting extending and contracting movement relative to the first cylindrical body (1), and third cylindrical bodies (3) fitted over both outer peripheral surfaces (4) and comprising a pair of casing tubes each having slidable spherical inner peripheral surfaces (3c) and connection portions at opposite ends thereof, wherein an end inner peripheral surface (5) of each of third cylindrical bodies (3) at the thereof to which second cylindrical body (2) is inserted is chamfered, and the chamfered angle is 16 DEG or greater, and the stopper means (27, 37) is mounted to an outer peripheral surface (4) of the second cylindrical body (2) and is formed into a closed ring shape. <IMAGE></p> |
