Patent ID: 8136377

Claim:
A card lock structure for selectively locking or releasing a lock barrel, comprising: a card lock casing having a card-inserting groove formed on a lateral side thereof; and a card barrel limiting mechanism disposed in the card lock casing, wherein the card barrel limiting mechanism has a lock barrel limiting push rod pivotally disposed in the card lock casing, an elastic element disposed between an inner surface of the card lock casing and the lock barrel limiting push rod and a movable pressing unit for pressing the lock barrel limiting push rod, and one end of the lock barrel limiting push rod projects outside the card lock casing in order to selectively lock or release the lock barrel; whereby, when the movable pressing unit presses the lock barrel limiting push rod, the lock barrel is locked by the lock barrel limiting push rod; when a card passes through the card-inserting groove to push the movable pressing unit to release the lock barrel limiting push rod, the lock barrel limiting push rod is moved by the elasticity of the elastic element in order to release the lock barrel; wherein the card lock casing has a support disposed therein, and the support has a pivot portion, an opening formed under the pivot portion and a retaining groove formed beside one side of the opening; and wherein the movable pressing unit has a pin body disposed in the retaining portion, a movable body disposed around the pin body and a torsion spring disposed around the pin body.