公开(公告)号：US4863199A

公开(公告)日：1989-09-05

申请号：US118461

申请日：1987-11-09

申请人： Sadamune Hojo ,  Toshiyuki Iwamoto ,  Noriyuki Arakawa ,  Terutaka Narita

发明人： Sadamune Hojo ,  Toshiyuki Iwamoto ,  Noriyuki Arakawa ,  Terutaka Narita

IPC分类号： F16L37/092 ,  F16L37/50

CPC分类号： F16L37/0925 ,  F16L37/505

摘要： The inner surface of the open end of a socket for a pipe is formed with a taper portion and a lock ring is received on the inner periphery of the taper portion. The outer peripheral portion of the socket corresponding to the taper portion is tapered in the same direction so that the wall thickness of the socket at the taper portion has a suitable value. When a pull-out force acts on a spigot inserted in the socket, the wedge action of the taper portion presses the lock ring against the spigot, whereby the separation is prevented. If an excessive pull-out force acts thereon, the portion of the socket which has the suitable thickness is deformed for radial expansion so as to allow the pull-out of the lock ring. Thereby, the pipe joint and the pipe body are prevented from being broken by the excessive force.

摘要翻译： 用于管道的插座的开口端的内表面形成有锥形部分，并且锁定环容纳在锥形部分的内周上。 与锥形部对应的插座的外周部在同一方向上是锥形的，使得锥形部分处的插座的壁厚具有合适的值。 当拉出力作用在插入插座中的插头上时，锥形部分的楔形动作将锁定环压靠在插口上，从而防止分离。 如果过大的拉出力作用在其上，则具有适当厚度的插座部分会变形以进行径向膨胀，从而允许锁环的拉出。 由此，防止管接头和管体被过大的力破坏。