Patent ID: 9074517
Filing Date: 2015-07-07
Classification: F01P,F16K

Abstract:
1. A vehicle coolant control valve comprising: a valve body for controlling the flow of a fluid, the valve body being made of a magnetic material; a valve seat capable of coming in contact with the magnetic material of said valve body, the valve seat being made of a magnetic material; urging means for urging said valve body toward said valve seat; a solenoid for moving said valve body toward said valve seat; a yoke fixedly fitted onto the solenoid, the valve seat being provided in the yoke; and a housing for surrounding at least said valve body and said urging means; wherein said valve body is moved in the opening direction by fluid pressure of a fluid discharged from a pump during operation of said pump, against the urging force of said urging means in the closing direction; said valve body is maintained in contact with said valve seat by the urging force acting in the closing direction when said pump is stopped; said valve body is brought into contact with said valve seat by an attractive force acting in the closing direction, and the urging force acting in the closing direction when said pump is operated and said solenoid is excited, and retained in a closed state by a magnetic circuit formed by the valve body and the valve seat; said valve body is pushed and retained in an open state by a fluid pressure acting in the opening direction when said pump is operated and said solenoid is not excited; a passage formation member to be brought into contact with the fluid is provided on an internal periphery side of the solenoid, the solenoid and the passage formation member constituting a single assembly whereby the passage formation member does not move relative to the solenoid; the housing is provided with a valve body guide part which extends from an internal peripheral surface of the housing toward the valve body and in a moving range of the valve body in the opening and closing direction; and the valve body guide part is configured to guide an outermost external periphery of the valve body to move the valve body in the opening and closing direction.