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US 11,952,800 B2Granted
Lock devices, systems and methods
AssigneeSchlage Lock Company LLC
InventorsAaron P. McKibben, Kenton H. Barker
Life of this patent
Estimating the term…
Abstract
Lock devices, systems, and methods including an internal mechanism to permit backdriven operation and lost motion operation. In one form, the lock includes an assembly of parts with locating features that assist in those parts being assembled with other parts of the assembly in a single, relative orientation. Further, lost motion may be utilized to accommodate manual displacement of one or more components that can also be displaceable, in some embodiments, via operation of a motor. The lock can also include an internal power source capable of driving electronics used to determine handedness of a door.
Claims18
A lock apparatus, comprising:
- a case;
- a motor mounted in the case;
- a manual actuator;
- a lost rotational motion assembly mounted in the case, the lost rotational motion assembly comprising:
- a first component configured for connection with a bolt, wherein the first component is rotatable between first position and a second position, wherein one of the first position or the second position is a bolt-extending position, and wherein the other of the first position or the second position is a bolt-retracting position;
- a second component operably connected with the motor such that the motor is operable to rotate the second component in each of a first rotational direction and a second rotational direction opposite the first rotational direction between a home position and a first rotated position, the second component including a pocket;
- and
- a coil spring extending between the case and the first component, the coil spring axially urging the first component into the pocket of the second component in order to couple the first component with the second component;
- a position sensor coupled to and moveable with the first component, the position sensor operably connected to control circuitry connected with the motor, the position sensor operable to indicate to the control circuitry that the first component has reached the first position and the second position;
- and
- a lock cylinder connected with the first component, wherein the lock cylinder is operable to move the first component between the bolt-extending position and the bolt-retracting position while the second component remains in the home position;
- wherein, with the first component in the first position, rotation of the second component in the first rotational direction from the home position to the first rotated position drives the first component from the first position to the second position;
- wherein the first component is configured to remain in the second position during rotation of the second component in the second rotational direction from the first rotated position to the home position;
- and
- wherein the manual actuator extends through an opening of the first component, and wherein depressing the manual actuator axially displaces the manual actuator and the first component to compress the coil spring between the case and the first component and decouple the first component from the second component during operation of the lock cylinder to manually move the first component between the bolt-extending position and the bolt-retracting position so that the second component remains in the home position.
12 more elements
A method, comprising:
- receiving a first lock/unlock signal at a powered door bolt assembly, the powered door bolt assembly comprising a motor, a bolt, and a lost rotational motion assembly including a first component connected with the bolt and a second component connected with the motor, the power door bolt assembly further comprising a coil spring extending between the first component and a relatively fixed structure of the powered door bolt assembly to axially urge the first component into a pocket of the second component in order to connect the second component to the first component, and a position sensor coupled to and moveable with the first component, the position sensor operably connected to control circuitry connected with the motor;
- in response to the first lock/unlock signal, performing a first motor operation that comprises operating the motor to drive the second component in a first direction from a home position to a first rotated position, thereby rotating the first component from a first component first position to a first component second position, and thereby driving the bolt from a bolt first position to a bolt second position;
- in response to the position sensor coupled to and moving with the first component providing an output indicating to the control circuitry that the first component has reached the first component second position, performing a second motor operation that comprises operating the motor to drive the second component in a second direction opposite the first direction from the first rotated position to the home position while the first component remains in the first component second position and the bolt remains in the bolt second position;
- and
- in response to rotation of a manual actuator between a locking position and an unlocking position, decoupling the second component from the first component by depressing the manual actuator through the first component to compress the coil spring and axially displace the first component out of the pocket of the second component while rotating the first component between the first component first position and the first component second position, thereby driving the bolt between the bolt first position and the bolt second position so that the second component is maintained in the home position.
2 more elements
A lock apparatus, comprising:
- a manual actuator;
- a motor operable to perform a first operation and a second operation;
- a bolt;
- a lost motion assembly, comprising:
- a first component connected with the bolt and the manual actuator such that rotation of the first component between a first position and a second position moves the bolt between an extended position and a retracted position;
- a second component operably connected with the motor and operable to rotate the first component between the first position and the second position, the second component including a pocket;
- and
- a coil spring extending between the first component and a fixed structure of the lock apparatus, the coil spring axially urging the first component into the pocket of the second component in order to couple the first component with the second component;
- a position sensor coupled to and moveable with the first component operable to detect the first position and the second position of the first component;
- and
- control circuitry connected to the motor and the position sensor;
- wherein the first operation comprises rotating the second component in a first rotational direction from a home position to a first rotated position, thereby driving the first component from the first position to the second position, and thereby placing the bolt in one of the extended position or the retracted position;
- wherein the second operation comprises rotating the second component in a second rotational direction opposite the first rotational direction from the first rotated position to the home position in response to the control circuitry receiving an indication from the position sensor that the first component has reached the second position;
- wherein the lost motion assembly is configured to maintain the first component in the second position during the second motor operation;
- wherein the manual actuator is operable to rotate the first component between the first position and the second position;
- and
- wherein the manual actuator extends through an opening of the first component, and the manual actuator is axially depressed to displace the manual actuator and the first component to compress the coil spring between the first component and the fixed structure to decouple couples the first component from the second component during operation of the manual actuator to rotate the first component between the first position and the second position so that the second component remains in the home position.
14 more elements
Dependencies are inferred from the claim text.