Schnellkupplung für Fluide

摘要

A push-to-connect, pull-to-disconnect ball detent coupling (10) has a socket (12), a plug (14), detent balls (22) carried by the socket (12) for holding the plug (14) in coaxial coupled relation, and a collar (70) with two interlocking sleeves (74,88) forming a channel (90). The channel (90) receives a spring biased plunger (72) for moving the collar (90) to actuate the detent balls (22). The collar (70) is biased so that when the socket (12) and plug (14) are disconnected, the ball detents (22) are not maintained in a fixed position. The plug (14) enters the socket (12) through an orifice (96) in the plunger (72) and engages the balls (22) and the plunger (72) to compress the plunger spring (92). On further insertion of the plug (14) into the socket (12), the retaining balls (22) move inwardly into an annular groove (64) on the plug (14) and release the collar (70). The compressed spring (92) then causes the collar (70) to snap so that a projecting shoulder (76) on the inner sleeve (74) of the collar (70) holds the balls in place in the annular groove (64) in the plug (14) and the socket (12) and plug (14) are locked in coupling engagement. To release the plug (14) from the socket (12), an operator pushes the collar (70) against the spring (92) so that an annular groove (78) on the inner surface of the collar (70) comes into registry with the ball retaining apertures thereby releasing the balls from the annular groove (64) in the plug. The spring (92) in combination with spring biased valves (30,50) in the flow passage through the coupling (10) force the plug (14) out of the socket (12).