Electric connector

An electric connector used in a state in which the electric connector is mounted on a wiring board,

• the electric connector comprising:
• an insulating housing having a medium insertion path to which a plate-shaped signal transmission medium is to be inserted;
• a medium guide surface serving as part of a surface of the insulating housing forming the medium insertion path and configured to guide the plate-shaped signal transmission medium inserted to interior of the medium insertion path;
• a contact housing portion provided in a recessed manner in a state in which the contact housing portion is dented in a groove shape from the medium guide surface;
• an electrically-conducive contact member having part disposed in interior of the contact housing portion;
• and
• an actuator cam turnably attached to the insulating housing and configured to be subjected to a turning operation about a turning shaft determined in advance so as to reciprocate between a standby position and a working position;
• the electric connector configured so that a contact point portion of the contact member abuts the plate-shaped signal transmission medium inserted in the medium insertion path along the medium guide surface when the contact member is elastically displaced by the actuator cam undergone the turning operation from the standby position to the working position, wherein
• the contact member is provided with a medium abutting portion having first and second main beams configured to be displaced by the actuator cam, a fixation base portion connected to the wiring board, and an elastically-displaceable coupling beam portion integrally connecting the medium abutting portion and the fixation base portion;
• a rigidity F1 of the coupling beam portion of a case in which the coupling beam portion is elastically displaced is set to be the same as or smaller than a rigidity F2 of the medium abutting portion of a case of displacement to a direction in which the medium abutting portion abuts the plate-shaped signal transmission medium (F1≦F2);
• while, when the actuator cam is at the standby position, the contact point portion of the first or second main beam constituting the contact member is positioned in the interior of the contact housing portion and maintained in a state in which the contact point portion is lowered below the medium guide surface from the medium insertion path;
• and
• the contact point portion of the first or second main beam in a case in which the actuator cam is subjected to the turning operation toward the working position is displaced from the interior of the contact housing portion toward the medium guide surface and abuts the plate-shaped signal transmission medium disposed in the medium insertion path.