Capacity control valve

A capacity control valve comprising:

• a solenoid portion;
• a tube placed in said solenoid portion;
• a movable core, wherein said moveable core forms a slide surface and a non-contact surface on an outer diameter surface thereof, wherein said slide surface is fitted to said tube, wherein a diameter of said non-contact surface is formed smaller than a diameter of said slide surface, wherein an axial length of said slide surface is shorter than an axial length of said non-contact surface;
• a solenoid rod portion coupled to said movable core and which forms an abutting surface on a free end portion of said solenoid rod portion placed opposite to said movable core;
• a fixed core which defines an inner bore and is placed in an opposing manner against said movable core, the inner bore loosely fitted to said solenoid rod portion;
• and
• an actuation rod having a joint portion and a valve body, the joint portion being engaged with said abutting surface of said solenoid rod portion, the valve body opening or closing a control fluid passage hole;
• wherein one of said abutting surface of said solenoid rod portion and said joint portion of said actuation rod has a concave cone-shape surface while the other has a convex cone-shape portion;
• wherein a bottom face of said concave cone-shape surface is formed as a wide area of either a planar surface or a circular cross section;
• wherein a head portion of said convex cone-shape portion is truncated to form a truncated cone surface, the truncated cone surface corresponding to the bottom face of said concave cone-shape surface, and
• wherein a cone angle β of said concave cone-shape surface of said solenoid rod portion is formed larger than a cone angle α of said convex cone-shape portion of said actuation rod by 0.5 to 6 degrees.