| 摘要 |
This invention relates to sequential locking apparatus which has an actuating handle 5 and an associated bolt opening mechanism. The apparatus has a lock release arm 32, a pin and barrel associated with the lock release arm and a code entry mechanism 20 which collectively control whether the lock can be unlocked by a user. The code entry mechanism comprises a rotatable shaft 22, an obstruction portion 42 provided on the rotatable shaft for selective engagement with a portion of the lock release arm and a series of clutch mechanisms 28 provided on the rotatable shaft. Each clutch mechanism has drive and driven components and an actuation portion communicable with an associated entry button such that pressing the associated entry button selectively results in rotation of the rotatable shaft to cause actuation of the lock release arm. This arrangement only allows the locking apparatus to be unlocked when the entry code is entered in sequence. |
