| 摘要 |
An electric deadlock assembly includes a housing, a dead bolt being linearly moveable relative to the housing between an extended locked position and a retracted release position; a deadlocking means including a lever arm which is rotatable about an axis to move the dead bolt relative to the extended locked position. an electrically powered actuator that when energised is operable to move the lever arm relative to the deadlock position thereby moving the dead bolt in a first direction relative to the extended position, and a bolt biasing means for urging the bolt to move in a second direction relative to the extended position so that when the electric actuator is de-energised the bolt will move in the second direction which is opposite to the first direction. The lever arm is rotatable in one direction into a deadlock position and the deadbolt is prevented from being moved away from the extended locked position and rotatable in an opposite direction away from the deadlock position. When the lever arm is in the deadlock position the bolt biasing means urges the lever arm to rotate in the one direction.
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