| 摘要 |
<p>PURPOSE: To improve the durability of a hose to higher pressure fluid by providing a plurality of annular lug parts projecting in the centripetal direction and different diameters in an axial hole provided in the tube part of a socket. CONSTITUTION: A tubular joint body 10 made of a metal like steel is provided on one 10a side with a hose inserting end 11 and formed on the other end 10b side with a fixing means 12 consisting of a male screw part 12a and nut part 12b. An end 31 of the hose 3 is pinched in a cavity A by disposing a tubular socket 20 provided on the outer peripheral part of the inserting end 11 with a cavity A fixedly to the proximal end 13 of the inserting end 11. An axial hole 23 of a tube part 21 of the socket 20 consist of a hole 23a adjacent to an opening 21a and a hole 23b having the inner diameter smaller than that of the hole 23a. The hole 23b is formed with annular lugs 26-28 having the inner diameter smaller than that of an annular lug 24, while the annular lug 24 is formed on the top with a tapered surface 24b having the inner diameter reduced toward the other axial end.</p> |
