Lock system for motor vehicle

A lock system for motor vehicles selectively making an operation of an operating member ineffective, comprising:

• an interlock member for moving in a predetermined moving direction while interlocking with the operation of the operating member;
• a stopper member capable of reciprocating between a lock position and an unlock position, the lock position being a position at which movement of the interlock member is prohibited by bringing the interlock member into contact with the stopper member when the interlock member is moved in the operating direction, the unlock position being a position at which the interlock member is permitted to move by evacuating the stopper member from a locus of movement of the interlock member;
• an idle member applying a moving force allowing the stopper member to move toward the unlock position in response to the movement o#the interlock member in the operating direction;
• a movable member to which the moving force of the idle member is transmitted;
• an electromagnet having a main body fixed to the stopper member and binding the movement of the movable member with respect to the main body while being energized;
• a first spring means for urging the idle member toward the lock position of the stopper member together with the movable member;
• and
• a second spring means for urging the stopper member toward the lock position together with the main body of the electromagnet,
• wherein a resiliency of the second spring means is set to a value larger than a resiliency of the first spring means and smaller than a resultant force of a movable member attracting force of the electromagnet and a resiliency of the first spring means.