Oil control valve

Abstract

As an oil control valve controlling oil pressure of a first hydraulic pressure chamber and a second hydraulic pressure chamber formed inside of a first electric hydraulic valve (EHV) device and a second EHV device, respectively, which are driven by a first cam and a second cam and include lower parts to which a first valve and a second valve are respectively connected, the oil control valve includes: a body including a communication hole having a first end in communication with the first hydraulic pressure chamber and a second end in communication with the second hydraulic pressure chamber; a hollow lower frame formed or fixedly mounted at the lower end part of the body and having an upper part communicating with the communication hole and a lower part communicating with an oil gallery supplying oil by disposing an upper end height at an inner space of the communication hole; and a pin frame disposed between an actuator moving up and down and the lower frame so as to vertically penetrate the communication hole and in contact with or separated from the upper part of the lower frame, wherein one end and the other end of the communication hole are in communication when the pin frame and the lower frame are in contact.

1 . An oil control valve controlling oil pressure of a first hydraulic pressure chamber and a second hydraulic pressure chamber formed inside of a first electric hydraulic valve (EHV) device and a second EHV device, respectively, which are driven by a first cam and a second cam and include lower parts to which a first valve and a second valve are respectively connected, comprising:
 a body including a communication hole having a first end in communication with the first hydraulic pressure chamber and a second end in communication with the second hydraulic pressure chamber;   a hollow lower frame formed or fixedly mounted at a lower end part of the body, the hollow lower frame having an upper part communicating with the communication hole and a lower part communicating with an oil gallery supplying oil by disposing an upper end height at an inner space of the communication hole; and   a pin frame disposed between an actuator moving up and down and the hollow lower frame so as to vertically penetrate the communication hole and in contact with or separated from the upper part of the hollow lower frame,   wherein the first end and the second end of the communication hole are not communicated with each other when the pin frame and the hollow lower frame are in contact with each other.   
     
     
         2 . The oil control valve of  claim 1 , wherein
 the pin frame is hollow, and   the oil control valve further includes a spring acting as a restoring force to the pin frame as the upper end is connected to an upper part of the pin frame and the lower end is connected to a supporting part formed at an inner space of the hollow lower frame.   
     
     
         3 . The oil control valve of  claim 1 , wherein
 the actuator is operated up and down by a solenoid.   
     
     
         4 . The oil control valve of  claim 1 , wherein
 the pin frame is integrally formed with the lower end part of the actuator.   
     
     
         5 . The oil control valve of  claim 1 , wherein
 the hollow lower frame, the communication hole, and the pin frame each have a cylinder shape, and a diameter of the hollow lower frame and the pin frame is larger than a diameter of the communication hole.   
     
     
         6 . The oil control valve of  claim 1 , wherein
 a chamfer is formed along an external circumference surface of a lower end of the pin frame in the pin frame, and   a chamfer surface is formed at the upper end of the lower frame so as to maintain a fixed and air-tight state by meeting the chamfer.   
     
     
         7 . The oil control valve of  claim 1 , wherein
 when the pin frame is separated from the lower frame, as the oil is drained from the first EHV device and the second EHV device, the first valve and the second valve are not operated despite the operation of the first cam and the second cam.   
     
     
         8 . The oil control valve of  claim 1 , wherein
 when the pin frame is in contact with the hollow lower frame, the first valve and the second valve are operated by the operation of the first cam and the second cam.