Door latch assembly with wireless overlock
A door latch assembly includes a housing; a bolt configured to the extend from the housing in a first direction and retract into the housing in a second direction; a handle connected to the bolt; a lockable, blocking member configured to prevent movement of the bolt; a controller configured to place the door latch assembly into an overlock mode; an actuator in communication with the controller, the actuator configured to prevent movement of the bolt in the overlock mode.
1 . A door latch assembly comprising:
a housing;
a bolt configured to the extend from the housing in a first direction and retract into the housing in a second direction;
a handle connected to the bolt;
a lockable, blocking member configured to prevent movement of the bolt;
a controller configured to place the door latch assembly into an overlock mode;
an actuator in communication with the controller, the actuator configured to prevent movement of the bolt in the overlock mode;
wherein the lockable, blocking member comprises:
a base plate having a base plate tab extending from the base plate;
an arm rotatably connected to the base plate, the arm including an arm tab extending from the arm;
a base plate tab hole in the base plate tab;
an arm tab hole in the arm tab;
wherein the base plate tab hole and the arm tab hole are configured to be aligned with upon rotation of the arm relative to the base plate;
a vibration sensor; wherein the controller is configured to place the door latch assembly into the overlock mode in response to the vibration sensor; wherein the controller is configured to send an attack message from the door latch assembly to a remote system in response to the sensed vibration.
2 . The door latch assembly of claim 1 , wherein:
the controller is configured to place the door latch assembly into the overlock mode in response to a message from a remote system.
3 . The door latch assembly of claim 1 , further comprising:
a position sensor in communication with the controller;
the position sensor configured to detect if the bolt is extended from the housing in the first direction or retracted into the housing in the second direction.
4 . The door latch assembly of claim 1 , further comprising:
a communication module configured to provide communication between the controller and a remote system.
5 . The door latch assembly of claim 4 , wherein the controller places the door latch assembly into the overlock mode in response to a message from the remote system.
6 . The door latch assembly of claim 1 , wherein the actuator comprises a motor.
7 . The door latch assembly of claim 1 , wherein the actuator comprises a stop.
8 . A method of operating a door latch assembly having:
a housing;
a bolt configured to the extend from the housing in a first direction and retract into the housing in a second direction;
a handle connected to the bolt;
a lockable, blocking member configured to prevent movement of the bolt;
a controller configured to place the door latch assembly into an overlock mode;
an actuator in communication with the controller, the actuator configured to prevent movement of the bolt in the overlock mode;
wherein the lockable, blocking member comprises:
a base plate having a base plate tab extending from the base plate;
an arm rotatably connected to the base plate, the arm including an arm tab extending from the arm;
a base plate tab hole in the base plate tab;
an arm tab hole in the arm tab;
wherein the base plate tab hole and the arm tab hole are configured to be aligned with upon rotation of the arm relative to the base plate;
the method comprising:
determining, by a remote server, that an overlock mode is required at the door latch assembly;
sending, from the remote server to the door latch assembly, a message to enter the overlock mode.
9 . The method of claim 8 , further comprising:
detecting at the door latch assembly that a bolt has been extended;
sending a closed message from the door latch assembly to the remote server.
10 . The method of claim 9 , further comprising:
storing the closed message in an audit record contained in memory of the door latch assembly.
11 . The method of claim 8 , further comprising:
detecting at the door latch assembly that a bolt has been retracted;
sending an open message from the door latch assembly to the remote server.
12 . The method of claim 11 , further comprising:
storing the open message in an audit record contained in memory of the door latch assembly.
13 . The method of claim 11 , further comprising:
sending the open message to a user.
14 . The method of claim 8 , further comprising:
periodically sending a status message from the door latch assembly to the remote server.
15 . The method of claim 14 , further comprising:
the remote server initiating maintenance of the door latch assembly in response to a missing status message.
16 . The method of claim 8 , further comprising:
sensing vibration at the door latch assembly;
sending an attack message from the door latch assembly to the remote server in response to the sensed vibration.
17 . The method of claim 8 , further comprising:
determining, at the remote server, that the overlock mode is not required at the door latch assembly;
providing a credential to the door latch assembly to end the overlock mode.
18 . The door latch assembly of claim 1 , wherein the actuator comprises a bistable solenoid and a stop, the bistable solenoid configured to move the stop into a first position to prevent movement of the bolt and a second position to allow movement of the bolt.