A time programmable unlocking lock includes a tenon structure
assembly, wherein the tenon structure
assembly includes a front and a rear retaining plate, the front retaining plate connects to an inner side of a door and has a round hole for a tenon of the rear retaining plate to go through, the rear retaining plate has a slot disposed thereon and cooperates with a
flange to slidingly connect to the inner side of the door, a front end of the rear retaining plate connects with the tenon, a rear end of the rear retaining plate connects with a
metal plate, and the front retaining plate connects with the rear retaining plate through a compression spring. A
timer device is disposed at the inner side of the door and controls the circuit operation, the
timer setting and the counter setting of the time programmable unlocking lock.