Electronic lock mechanism

An electronic lock operating between a locked position and an unlocked position, for locking and unlocking a storage unit, the electronic lock comprising:

• a lock housing configured for secure engagement with the storage unit, the lock housing comprising a back wall defining a fastener receptacle for receiving a fastener when the fastener is secured to the fastener receptacle from an interior wall of the storage unit;
• a driver for operating engagement with a locking assembly in the storage unit;
• a drive shaft extending along a longitudinal axis extending inwardly through the housing for selective operational engagement with the driver;
• an electronic access control to operate a motorized activation assembly, the motorized activation assembly configured to move a locking pin along a motorized activation assembly axis perpendicular to a longitudinal axis defined by the drive shaft, between a first activation assembly position and a second activation assembly position, a rotor secured to the drive shaft for corotational movement of the rotor and the drive shaft, the locking pin engaging an outer circumferential wall of the rotor to inhibit rotational movement of the rotor and the drive shaft when the motorized activation assembly is in the first activation assembly position, and the locking pin disengaging from the rotor in the second activation assembly position to permit rotational movement of the rotor and the drive shaft and to operate the driver between a locked position and unlocked position;
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• a manual activation assembly comprising a manual actuator, the manual actuator comprising a detachable hand control secured to the rotor for rotational movement with the drive shaft, the rotor being configured for selectable secured positioning of the hand control relative to the drive shaft, the hand control being enabled to move the driver when the motorized activation assembly is in the second activation assembly position, between a first driver position corresponding to the locked position and a second driver position corresponding to the unlocked position.

An electronic lock for locking and unlocking a locking assembly in a storage unit, the electronic lock comprising:

• a lock housing comprising a removable back plate configured for secure releasable engagement with the storage unit, the removable back plate comprising two fastener receptacles for securing the electronic lock to an exterior wall of the storage unit when two corresponding fasteners are secured to the fastener receptacles from within an interior wall of the storage unit;
• a drive shaft defining a longitudinal axis extending inwardly through the housing for selective operational movement of the driver;
• an electronic access control to operate a motorized activation assembly, the motorized activation assembly comprising a gear assembly for motorized operational movement of a retainer along a transverse axis extending perpendicularly to the longitudinal axis, the retainer moving along the transverse axis to engage a retainer port in an outer circumferential wall of a rotor, the outer circumferential wall extending radially along the longitudinal axis, the retainer secured to the rotor and the drive shaft to inhibit rotational operation of the drive shaft when in the first activation assembly position and the retainer being disengaged from the retainer port in the outer circumferential wall of the rotor in the second activation assembly position, when in the first activation assembly position the drive shaft is operationally inhibited against moving the driver, and in the second activation assembly position the drive shaft is enabled for operational movement of the driver to move the locking assembly in the storage unit between locked and unlocked positions;
• a manual activation assembly comprising a manual actuator operationally enabled to manually move the driver when the motorized activation assembly is in the second activation assembly position, for manual operational movement of the driver between a first driver position corresponding to the locked position and a second driver position corresponding to the unlocked position;
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• the manual actuator comprising a detachable knob secured to the rotor and fastened to the drive shaft, the knob comprising a base secured to the rotor, the base defining a break line positioned inwardly and adjacent an exterior wall of the housing to encourage an outer portion of the knob to break away from the manual actuator when an unauthorized force is applied to the knob to operate the drive shaft without permission.