Patent ID: 8726932
Filing Date: 2014-05-20
Classification: F16K,Y10T

Abstract:
1. A pipe connector comprising: a tubular connector body through which a fluid flows; and a valve cartridge capable of being fitted in the connector body and of controlling the flow of the fluid, wherein the valve cartridge includes: a valve element for opening and closing a flow passage; a coil spring for pressing the valve element; and a case provided with a valve seat defining a valve opening and holding the valve element and the coil spring therein; the connector body has a first cylindrical shape and is provided on its inside cylindrically shaped surface with a first interlocking part that is positioned along an inner circumference of the connector body, and the case of the valve cartridge has a second cylindrical shape and is provided on its outside radial cylindrically shaped surface with a second interlocking part that is positioned along an outer circumference of the case of the valve cartridge, capable of interlocking with the first interlocking part, the first interlocking part and the second interlocking part are interlocked with each other along the inner circumference of the connector body and the outer circumference of the case of the valve cartridge when the valve cartridge is pushed in a direction of an axis of the connector body into the connector body; and the first interlocking part has a first annular groove or a first annular ridge formed on the inside cylindrically shaped surface, and the second interlocking part has a second annular ridge capable of engaging with the first annular groove or a second annular groove capable of engaging with the first annular ridge formed on the outside cylindrically shaped surface, in order that the first interlocking part and the second interlocking part are able to fit each other in both a radial direction and an axial direction, wherein the case of the valve cartridge includes a first case part provided with the valve seat, and a second case part provided with a spring seat for making a tail end of the coil spring set on the spring seat and the second interlocking part, the coil spring being held in the case and the coil spring pressing the valve element to the valve seat through the spring seat; wherein the valve element of the valve cartridge is provided with an orifice that allows the fluid to flow at a low flow rate.