Locking device with embedded circuit board

Abstract

Electrified access-control technology devices for a door, particularly electrified locks for a door, having embedded circuitry therein, and methods of making the same. One or more printed circuit boards (PCBs) having various electronic circuitry are secured inside a housing that encases an access-control device, particularly a lock, for a door. The one or more PCB(s) may be embedded on an internal surface of the housing such that the embedded PCB resides inside the housing along with the lock itself. The embedded PCB(s) avoid interference of both any working components of the lock inside the housing and any openings residing in the housing.

Thus, having described the invention, what is claimed is: 
     
         1 . An electrified lock comprising:
 a mortise lock housing having a first side and a second side, each side having an internal surface facing an inside of the housing, the second side including a second side opening therein;   a circuit board having various electrical components for electrifying said lock; and   a location of said lock adjacent the internal surface of the second side and adjacent a lock cylinder opening, said circuit board and said second side opening both residing in said location whereby the circuit board resides directly over and covers said second side opening permitting access to the circuit board from outside said housing through said second side opening thereby allowing electrical circuitry outside the lock to be connected via wiring to at least one of the electrical components on the circuit board inside said housing.   
     
     
         2 . The electrified mortise lock of  claim 1  further including a lock mechanism within said housing including a latch bolt, a latch retract lever, and a motor for moving a locking element, a surface of the circuit board being located adjacent to the motor, and a magnetically operated sensor mounted to the surface of the circuit board adjacent to the motor to monitor movement thereof. 
     
     
         3 . The locking device of  claim 2  wherein the sensor is a reed switch or a Hall effect sensor. 
     
     
         4 . An electrified lock comprising:
 a housing having a single enclosed internal chamber with at least one side having an internal surface facing an inside of said housing;   an access-control device residing in the inside of said housing and facing said internal surface of said at least one side;   an opening in said at least one side exposing said single enclosed internal chamber to outside said housing; and   a circuit board residing inside said housing in a location that is adjacent both said internal surface of said at least one side and said opening, whereby the circuit board resides directly over and covers said opening permitting access to the circuit board from outside said housing through said opening.   
     
     
         5 . The electrified lock of  claim 4  wherein an electrical connector resides on a backside of said circuit board, said electrical connector residing in said location of said opening to access said electrical connector through said opening in said at least one side. 
     
     
         6 . The electrified lock of  claim 4  wherein said electrified lock is selected from the group consisting of a mortise lock, a bored lock, an electric strike, a cylindrical lock, a tubular lock, an auxiliary lock, and a deadbolt. 
     
     
         7 . The electrified lock of  claim 4  wherein said access-control device is selected from the group consisting of an exit device, an electronic door strike, a door operator and a door closer. 
     
     
         8 . The electrified lock of  claim 4  further including a variety of electrical components attached to said circuit board to electrify said access-control device, said various electrical components are selected from the group consisting of one or more sensors, magnetically operated sensors, actuators, motor actuators, surface mount connectors, signal output devices, accelerometers, temperature sensors, heating components, and combinations thereof. 
     
     
         9 . The electrified lock of  claim 8  wherein said variety of electrical components include an actuator residing inside said housing and in electrical communication with said circuit board. 
     
     
         10 . The electrified lock of  claim 4  wherein said circuit board is secured inside said housing using mounts or harnesses residing in locations on internal surfaces of said housing that avoid interference with working components of said access-control device. 
     
     
         11 . The electrified lock of  claim 4  wherein said circuit board includes one or more sensors residing on said circuit board and positioned at various locations across said circuit board, said various locations corresponding to locations where one or more magnets reside on mechanical working components of said access-control device, whereby said one or more sensors sense said one or more magnets to detect positions of said mechanical working components of said access-control device. 
     
     
         12 . The electrified lock of  claim 11  wherein said one or more sensors are selected from the group consisting of non-contact sensors, analogue transducers, Hall effect sensors, electrical switches, reed switches, reed sensors, and combinations thereof. 
     
     
         13 . The electrified lock of  claim 11  wherein at least one of said one or more sensors is raised away from an exposed surface of said circuit board to sense said one or more magnets residing adjacent an opposing side of said housing. 
     
     
         14 . The electrified lock of  claim 4  wherein said access-control device is a moving lock component residing inside said housing, whereby said configuration of said circuit board avoids interference with said moving lock component. 
     
     
         15 . The electrified lock of  claim 14  wherein said circuit board has an outer perimeter with a portion thereof shaped to fit adjacent an edge of the housing and a portion thereof having a concave shape that avoids interference with said moving lock component. 
     
     
         16 . An electrified lock comprising:
 a housing having an internal chamber and at least one side having an internal surface facing an inside of said housing;   a moving lock component residing inside said housing and facing said internal surface of said at least one side;   an actuator residing inside said housing for moving said moving lock component;   a magnetically operated sensor mounted to the surface of the circuit board adjacent to the actuator to monitor movement thereof;   at least one opening in said at least one side that exposes said internal chamber to outside said housing; and   a circuit board residing inside said housing in a location that is adjacent said internal surface, said actuator, and said at least one opening in said at least one side, whereby the circuit board resides directly over and entirely covers said at least one opening permitting access to the circuit board from outside said housing.   
     
     
         17 . The electrified lock of  claim 16  wherein at least one of said one or more magnets resides on said actuator to detect positions thereof. 
     
     
         18 . The electrified lock of  claim 16  wherein the actuator comprises a motor actuator having a magnet residing on a surface thereof. 
     
     
         19 . The electrified lock of  claim 16  wherein said circuit board has at least a portion thereof that is received in a slot on an interior surface of the housing. 
     
     
         20 . The electrified lock of  claim 16  wherein said circuit board has an outer perimeter with a portion thereof shaped to fit adjacent an edge of the housing and a portion thereof having a concave shape that avoids interference with said moving lock component.