Fluid control valve unit and valve timing changing device

A fluid control valve unit comprising:

• a fluid control valve comprising a sleeve in a bottomed cylindrical shape that defines an axis and has an inlet for fluid and a communication port communicating with outside for fluid to pass through, and a spool slidably disposed in the sleeve for opening and closing the communication port;
• a cylindrical passage member comprising an inner peripheral surface to which the sleeve is fitted, a passage for fluid leading to the communication port, an annular receiving part facing one end of the sleeve in a direction of the axis, an opening formed adjacent to the annular receiving part and allowing fluid to flow in, and an annular groove formed adjacent to an other end of the sleeve in the direction of the axis and recessed from the inner peripheral surface;
• a filter member comprising an elastic part sandwiched between the one end of the sleeve and the annular receiving part of the passage member and exerting a biasing force in the direction of the axis;
• and
• a snap ring fitted in the annular groove for receiving the other end of the sleeve accommodated in the passage member and detachably receiving the spool,
• wherein the sleeve is disposed such that one end of the sleeve abuts the elastic part of the filter member, and an other end of the sleeve abuts the snap ring,
• wherein the sleeve comprises, as the communication port, a first communication port and a second communication port located on two sides of the inlet in the direction of the axis, and
• the spool comprises a rod that reciprocates within the sleeve, a first valve that is provided on the rod to open and close a passage between the inlet and the first communication port, a second valve that is provided on the rod to open and close a passage between the inlet and the second communication port, and a biasing spring that exerts a biasing force in a direction to bring the first valve into contact with the snap ring.