| 摘要 |
Provided is a key cylinder for an electronic locking device including a cylinder housing forming an appearance and a cylinder plug installed in the cylinder housing to lock and release the cylinder housing, wherein the cylinder plug includes a lock head including a key insertion hole into which a key head of a publicly known electronic key is removably inserted to a front side, a printed circuit board exchanging power and authentication data from the publicly known electronic key by installing key connection pins in a connection housing installed through the lock head, accessing to the key connection pins and equipping with a microprocessor and EEPROM, a driving motor performing normal rotation and reverse rotation drive in accordance with an input signal of the printed circuit board, a spur gear installed in an axis of the driving motor, a lock pin guider fixed in a rear direction of the cylinder plug, a direction conversion rotary ring rotating in accordance with drive of the driving motor by an internal gear rotatably installed through a fixing axis in the center of the lock pin guider and engaged with the spur gear in a front direction and a spiral groove formed in a rear direction, and a lock pin installed in the lock pin guider such that a pin hole formed in a direction perpendicular to an axis direction of the cylinder plug fluctuates, inserted into one side of a spiral groove formed in the direction conversion rotary ring, positioned through a straight guide wall intercommunicating with the pin hole, and appearing and disappearing in lock holes and formed in the cylinder housing by moving in a perpendicular direction to axis rotation of the direction conversion rotary ring through installation of a foot pin performing straight line motion to realized locking and release of the key cylinder. |
