Dust-sealing assembly for a coupling

摘要

A dust-sealing assembly for a coupling for use in a fluid circuit in which a body member is movably mounted on a mounting plate, and a nipple-releasing mechanism is fixed to the mounting plate and embraces a sleeve member that is mounted on and extends from one end of the body member, the nipple-releasing mechanism being spaced from the one end of the body member. A compression spring is disposed about the sleeve member in the space between the body member and nipple-releasing mechanism for holding the body member relatively away from the nipple-releasing mechanism. A dust cover is disposed about the sleeve member and spring, and is disposed in the space between the body member and the nipple-releasing mechanism for deterring entry of foreign material into the space. The compression spring engages the dust cover and retains the dust cover in place. The dust cover includes a flange that extends over the space and into close lapping relation to the nipple-releasing mechanism for permitting relative movement and yet deterring entry of foreign material therebetween. The elongate slot extends into the space below the dust cover, and a dust-sealing layer is extended over the elongate slot for deterring entry of foreign material into the space through the slot.