Locking device for doors, gates, flaps or windows of buildings, has one or multiple control locks which have locking- and unlocking unit and actuating unit, where actuating unit is applied to open door by drive unit

摘要

The locking device (1) has one or multiple control locks (2) which have a locking- and unlocking unit (3) and an actuating unit (5), where the actuating unit is applied to open the door by a drive unit. The drive unit of the actuating unit is formed as shape memory alloy element. The drive unit is directly or indirectly connected with a door locking key (7).