Electromechanical door lock

An electromechanical door lock comprising:

• a lock casing,
• a dead bolt linearly movable relative to the lock casing between a protruding position, in which the dead bolt protrudes from the lock casing and can be dead locked, and a withdrawn position within the lock casing,
• latch means comprising a latch which is spaced apart from the dead bolt in a longitudinal direction of the lock casing and is linearly movable relative to the lock casing between a protruding position and a withdrawn position, and spring means urging the latch toward its protruding position, said latch comprising a movable body member inside the lock casing and a wedge-shaped member protruding at least partly out from the lock casing when the latch is in its protruding position and connected to the body member in a manner permitting pivotal movement of the wedge-shaped member relative to the body member about an axis parallel to said longitudinal direction so that the latch is urged toward its withdrawn position when a force acts on said wedge-shaped member in a direction perpendicular to both said axis and the direction of movement of the latch,
• dead locking means for the latch, for preventing movement of the latch from its protruding position towards its withdrawn position,
• an electrical operating device, and
• force transmission means for transmitting force from the electrical operating device to the dead bolt so as to move the dead bolt from its protruding position to its withdrawn position, said force transmission means including a single rigid force transmission member movable at least substantially in the longitudinal direction of the lock casing, movement of said force transmission member causing release of the dead locking of both the dead bolt and the latch.

Access control apparatus comprising a door jamb, a striker plate fitted to the door jamb and formed with a dead bolt opening and a latch opening, a door movable relative to the door jamb between an open position and a closed position, and a door lock mounted in the door to cooperate with the striker plate for selectively retaining the door in its closed position, the lock comprising:

• a lock casing mounted in the door,
• a dead bolt linearly movable relative to the lock casing between a protruding position, in which the dead bolt protrudes from the lock casing and can be dead locked, and a withdrawn position within the lock casing,
• latch means comprising a latch which is spaced apart from the dead bolt in a longitudinal direction of the lock casing and is linearly movable relative to the lock casing between a protruding position in which the latch enters the latch opening in the striker plate and centralizes the dead bolt relative to the dead bolt opening in the striker plate, and a withdrawn position, and spring means urging the latch towards its protruding position, said latch comprising a movable body member inside the lock casing and a wedge-shaped member protruding at least partly out from the lock casing when the latch is in its protruding position, the wedge-shaped member being connected to the body member in a manner permitting pivotal movement of the wedge-shaped member relative to the body member so that the latch is urged toward its withdrawn position when a force acts on said wedge-shaped member from either side of the lock casing in the direction of door opening or closing,
• dead locking means for the latch, for preventing movement of the latch from its protruding position towards its withdrawn position,
• an electrical operating device, and
• force transmission means for transmitting force from the electrical operating device to the dead bolt so as to move the dead bolt from its protruding position to its withdrawn position, said force transmission means including a rigid force transmission member movable at least substantially in the longitudinal direction of the lock casing, movement of said force transmission member causing release of the dead locking of both the dead lock and the latch.