Interlock device

An interlock device applicable for a casing having an opening opened and closed by a first door and a second door in hinged double door construction for supply power to an apparatus housed within said casing when both of the first door and the second door are closed, comprising:

• a lever pivotably supported at an intermediate portion and being pivoted in a predetermined direction as pushed one end portion by said first door when said first door is closed;
• a link member responsive to pivot motion of said lever to said predetermined position and driven by the other end of said lever to be moved from a first position on the side of said first door to a second position on the side of said second door;
• a pushing member mounted on said link member and responsive to closure of said second door while said link member is placed at said second position, to be pushed into a third position;
• and
• a switch responsive to said pushing member placed at said third position to turn ON power supply for said apparatus.