Patent ID: 8199011
Filing Date: 2012-06-12
Classification: E05B

Abstract:
1. A lock comprising, in combination: a case adapted to be mounted in a compartment in a door, with the case including a faceplate and a rear wall spaced from the faceplate along a first axis (X), with the case further including a lateral wall and a lid spaced from the lateral wall along a second axis (Y) perpendicular to the first axis (X), with the faceplate, the rear wall, the lateral wall, and the lid together defining a space; a latch bolt received in the space, with the latch bolt including a retractor and a head operatively connected to the retractor, with the head slideable along the first axis (X) between an extended, latching position outside of the case and a retracted, unlatching position in the case; a driving rod rotatably received in the space and including an end operatively connected to the retractor, with the driving rod pivotable about the second axis (Y) between first and second positions, with the head of the latch bolt located in the extended, latching position when the driving rod is in the first position, with the head of the latch bolt located in the retracted, unlatching position when the driving rod is in the second position; an unlocking member rotatably received in the space, with the unlocking member including a push end, with the unlocking member further including first and second sides spaced along the first axis (X), with a passageway extending from the first side through the second side, with the first side at the push end of the unlocking member abutting the driving rod, with the unlocking member adapted to be operatively connected to an outer operating device mounted to an outer side of the door, with the outer operating device operable to rotate the unlocking member about the second axis (Y) between an initial position and a releasing position, with the driving rod located in the first position when the unlocking member is in the initial position, with the driving rod located in the second position when the unlocking member is in the releasing position; a driving device mounted in the space, with the driving device including a driving member movable along the third axis (Z), with the driving device adapted to be electrically connected to a power supply and to receive electricity from the power supply for moving along the third axis (Z); a connecting member slideably received in the space and connected to the driving member to move therewith, with the connecting member being movable by the driving member between an upper position and a lower position; a locking block removably mounted to the connecting member and selectively in one of first and second engagement relations with the connecting member, with the locking block including first and second end faces and a periphery extending between the first and second end faces, with the first end face facing the connecting member, with the second end face facing one of the lateral wall and the lid of the case, with an extension extending from the periphery of the locking block and having a distal end, with the unlocking member being rotatable by the outer operating device from the initial position to the releasing position when the distal end of the locking block is aligned with the passageway of the unlocking member, wherein the lock is in an unlocking state when the extension is received in the passageway while the unlocking member in the releasing position, allowing the driving rod to rotate from the first position to the second position about the second axis (Y) and retracting the head from the extended, latching position to the retracted, unlatching position, wherein the distal end of the locking block abuts the first side of the unlocking member when the distal end of the locking block is misaligned with the passageway of the unlocking member such that the lock is in a locking state prohibiting the unlocking member from being rotated by the outer operating device; a first detecting member mounted in the space, with the connecting member operatively connected to the first detecting member to control the first detecting member to be in a conductive state or a non-conductive state, wherein the first detecting member is pressed against by the connecting member in the lower position with the first detecting member in one of the conductive state and the non-conductive state, wherein the first detecting member is not pressed against by the connecting member in the upper position with the first detecting member in the other of the conductive state and the non-conductive state; a second detecting member mounted in the space, with the second detecting member adapted to be connected to a burglar alarm system, with the head of the latch bolt operatively connected to the second detecting member to control the second detecting member to be in a conductive state or a non-conductive state, wherein the second detecting member is not pressed against by the head in the extended, latching position with the second detecting member in the non-conductive state, wherein the second detecting member is pressed against by the head in the retracted, unlatching position with the second detecting member in the conductive state, wherein when the connecting member is in the upper position, the distal end of the locking block is in one of alignment and misalignment with the passageway of the unlocking member, wherein when the connecting member is in the lower position, the distal end of the locking block is in the other of alignment and misalignment with the passageway of the unlocking member, wherein when the distal end of the locking block is in misalignment with the passageway of the unlocking member, the first detecting member is in the conductive state and turns on the burglar alarm system, wherein when the distal end of the locking block is in alignment with the passageway of the unlocking member, the first detecting member is in the non-conductive state and turns off the burglar alarm system, wherein the burglar alarm system activates an alarm when the burglar alarm system is on and the second detecting member is in the conductive state, and wherein the burglar alarm system does not activate the alarm when the burglar alarm system is on and the second detecting member is in the non-conductive state.