Control valve in variable displacement compressor

A control valve in a variable displacement compressor that adjusts the discharge displacement by controlling an inclination of a cam plate located in a crank chamber, wherein said compressor includes a piston operably coupled to the cam plate and located in a cylinder bore, said piston compressing gas supplied to the cylinder bore from a first area and discharging the compressed gas to a second area, the inclination of the cam plate is variable based on the pressure in the crank chamber, and a supply passage for connecting the second area with the crank chamber, wherein said control valve is placed midway on the supply passage for adjusting the amount of the gas introduced into the crank chamber from the second area through the supply passage to control the pressure in the crank chamber, said control valve comprising:

• a housing having a valve hole disposed midway on the supply passage and a pressure chamber connected with the first area;
• a valve body for adjusting the opening size of the valve hole, said valve body moves in a first direction and a second direction opposite to the first direction, wherein said valve body moves in the first direction to open the valve hole, and wherein said valve body moves in the second direction to close the valve hole;
• a reacting member located in the pressure chamber for reacting to the pressure in the pressure chamber;
• a transmitting rod placed between the reacting member and the valve body, wherein said reacting member allows the valve body to move in the second direction via the rod when the pressure in the pressure chamber is raised;
• a solenoid opposed to the reacting member with respect to the valve body;
• a transmitting member placed between the solenoid and the valve body, wherein said solenoid urges the valve body in the second direction via the transmitting member with a force generated by a magnitude of electric current sent to the solenoid when the solenoid is excited;
• means for urging the valve body in the first direction;
• and
• said rod connecting the reacting member with the valve body to move the valve body toward or away from the reacting member, said rod having a first end, wherein said reacting member has a support member for slidably supporting the first end, whereby said urging means causes the valve body to fully open the valve hole when the solenoid is de-excited and said slidable support of the first end by the support member prevents said reacting member from moving the valve body in the second direction when the solenoid is de-excited.