Lock set to deadbolt interlock
An interlock is provided such that when a standard door lock handle is actuated, it will also open a deadbolt. The interlock is normally in a non-operational position. When a biometric sensor senses that a user wishing to use the door is approved, the interlock is actuated. The use of the interlock saves user movement by allowing the deadbolt to be opened with simple actuation of the standard lock structure.
1 . A door lock arrangement comprising:
a deadbolt having a deadbolt latch, and a deadbolt cam for being turned to actuate said deadbolt latch;
a door lock set having a latch, and a handle to actuate said door lock latch;
a biometric sensor for sensing aspects of an individual wishing access to a building associated with said door lock arrangement, and a control comparing the sensed aspects with stored aspects to identify a user as an approved individual;
an interlock for selectively actuating said deadbolt latch when said handle is actuated under certain conditions; and
said interlock being moved to a position where it can actuate said deadbolt latch when said handle is actuated when said control senses that the individual is an approved individual.
2 . The arrangement as set forth in claim 1 , wherein said deadbolt and said door lock set have outer actuation structures for being an outer face of a door, and said interlock works for actuation of the handle on said outer face.
3 . The arrangement as set forth in claim 1 , wherein said biometric sensor recognizes a fingerprint.
4 . The arrangement as set forth in claim 1 , wherein an interlock cam is normally out of alignment with an actuation structure for actuating said interlock, and said interlock cam being moved to be aligned with said actuation structure when the control senses an approved individual.
5 . The arrangement as set forth in claim 4 , wherein a spring normally biases said interlock cam to be out of alignment with the actuation structure, and a motor turns a structure to drive said interlock cam against the spring force when an approved individual is identified.
6 . The arrangement as set forth in claim 5 , wherein a worm gear drives a gear to in turn actuate a ramped cam to force the interlock cam to the aligned position when an approved individual is identified.
7 . The arrangement as set forth in claim 4 , wherein said actuation structure includes a pair of slide elements that are selectively driven by said interlock cam.
8 . The arrangement as set forth in claim 7 , wherein said interlock cam drives one of said slide elements dependent on a direction of turning movement.
9 . The arrangement as set forth in claim 8 , wherein said slide elements actuate the deadbolt cam.
10 . An interlock structure for selectively interlocking a door lock set with a deadbolt such that actuation of a handle for the door lock set will also actuate the deadbolt comprising:
an interlock actuation structure for selectively actuating a deadbolt cam when a lock handle is turned; and
an interlock cam for selectively actuating said interlock structure, said interlock cam being in a first position when an approved individual has not been identified by a biometric sensor associated with the interlock structure, said interlock cam not actuating said interlock actuation structure when in said first position, and said interlock cam being movable to a second position at which it will actuate the interlock actuation structure, said interlock cam being driven to the second position when an approved individual has been identified such that turning movement of the handle will actuate the deadbolt.
11 . The structure as set forth in claim 10 , wherein said interlock structure works for actuation by a handle on an outer face of a door.
12 . The structure as set forth in claim 10 , wherein a spring normally biases said interlock cam to be out of alignment with the interlock actuation structure and in said first position, and a motor turns a structure to drive said interlock cam against the spring force when an approved individual is identified.
13 . The structure as set forth in claim 12 , wherein a worm gear drives a gear to in turn actuate a ramped cam to force the interlock cam to the first position when an approved individual is identified.
14 . The structure as set forth in claim 10 , wherein said interlock structure includes a pair of slide elements that are selectively driven by said interlock cam.
15 . The structure as set forth in claim 14 , wherein said interlock cam drives one of said slide elements dependent on a direction of turning movement.
16 . The structure as set forth in claim 15 , wherein said slide elements actuate a deadbolt cam.