Card reader and card locking mechanism thereof

A card reader, comprising:

• a card insertion port, for inserting a card;
• a card transport path, for transporting the card;
• a card locking mechanism, for preventing the card from being removed from the card insertion port, the card locking mechanism having a locked state in which the card is prevented from being removed from the card insertion port and an un-locked state in which the card is not prevented from being removed from the card insertion port, the card locking mechanism comprises:
• a motor;
• a locking member, including a claw for contacting the card to prevent the card from being removed from the card insertion port;
• a power transmission mechanism, comprising a gear train, providing power transmission from the motor to the locking member, the gear train comprising:
• a worm gear, comprising a worm, and a worm wheel meshing with the worm;
• a first gear, providing power transmission from the worm gear to the locking member;
• a second gear, providing power transmission from the worm gear to the locking member;
• a clutch rotation shaft, having a clutch rotation axis, the clutch rotation shaft is configured to rotate at least two gears included in the gear train around the clutch rotation axis;
• a clutch mechanism, configured to engage and disengage power transmission between the motor and the locking member;
• an operation part, configured to release the locked state of the card locking mechanism by manually disengaging power transmission between the motor and the locking member,
• wherein the clutch mechanism is configured such that a clutch gear among the two gears rotating around the clutch rotation axis is decouplable from the clutch rotation shaft to disengage power transmission between the motor and the locking member.