ELECTRON LOCK

摘要

PROBLEM TO BE SOLVED: To surely operate a lock main body without the need of power supply through a signal conductor to the lock main body and battery exchange in an electron lock where data is mutually communicated for identification and collation between a key and the lock main body. SOLUTION: A battery 34 of a key 32 functions as a power supply for the key 32 and the lock main body 30. Power transmission is performed simultaneously with data transmission to the lock main body 30, and the transmitted power is accumulated in a capacitor by a power supply circuit 54. The power is used to conduct transmission from the lock main body to the key and drive an actuator 62. A control part 36 effectuates the use of a key only in a designated time zone. If the life of the battery 34 becomes short, a warning is given to an indicator 40.