MOTOR-DRIVEN VALVE

PROBLEM TO BE SOLVED: To prevent the deterioration of a housing environment caused by an impact sound generated by the abutment of a full closed stopper of a motor-driven valve, and to prevent the shortening of a service life of the motor-driven valve. SOLUTION: The motor-driven valve 1 includes: a valve stem 10 rotated accompanied by the rotation of a rotor 7 of the motor-driven valve and screwed with a valve stem holder 11 fixed to a valve body 5; and a valve element 12 abutting on and separated from a valve seat 4 in the valve body 5 by the rotation of the valve stem 10. The motor-driven valve 1 further includes: an upper full close stopper 14c rotated accompanied by the rotation of the rotor 7; a lower full close stopper 11c disposed at a valve stem holder 11, and abutting on the upper full close stopper 14c to restrict rotation in a valve closing direction of the valve stem 10 when the motor-driven valve 1 is fully closed; and a shock absorbing member 15 alleviating a shock when the upper full close stopper collides with the lower full close stopper 11c. In the shock absorbing member 15, the upper full close stopper 14c is a coil spring urging the upper full close stopper at a side opposite to a direction where the upper full close stopper 14c collides with the lower full close stopper 11c. COPYRIGHT: (C)2011,JPO&INPIT