| 主权项 |
1. An electromagnetic control valve comprising:
a valve chamber and a valve port formed between a first port and a second port; and an electromagnetically-driving part that drives a valve body in the valve chamber to open and close the valve port, wherein a force acting on the valve body due to a pressure difference between the first port and the second port is offset by a force acting on the valve body due to a pressure difference applied to a pressure sensing part between the valve chamber and a pressure equalizing chamber, an electromagnetic force of the electromagnetically-driving part is balanced against a spring force of an adjusting spring so that an opening degree of the valve port is proportionally changed, the electromagnetically-driving part includes a plunger which is movable inside a case in an axis direction of the case by the electromagnetic force, a valve member having the valve body is connected to the plunger through a connecting part of the valve member, the electromagnetically-driving part, the adjusting spring, the pressure equalizing chamber, and the pressure sensing part are disposed on an opposite side of the valve port with respect to the valve body on an axis line of the valve port, a pressure equalizing path through which the valve port communicates with the pressure equalizing chamber is formed in the valve member having the valve body, and a cover, which regulates flow of a fluid from the pressure equalizing chamber toward the plunger and to which a portion of the connecting part is insertable, is disposed between the pressure equalizing chamber and the plunger |
