Electronic door lock with direct drive

An electronic door lock in combination with a deadbolt lock located on a hinged door of a building structure and having a bolt that is extended and retracted by rotation of a spindle, the electronic door lock comprising:

• a stator assembly having windings that are operated to produce magnetic fields;
• a rotor assembly having a shaft and permanent magnets rotationally fixed to the shaft and that cooperatively rotate relative to the stator assembly, the magnetic fields of the windings interacting with the permanent magnets to cause rotation of the rotor assembly relative to the stator;
• and
• a cover:
• wherein the permanent magnets are positioned radially outward of the windings;
• and
• wherein the shaft extends axially through the stator assembly radially inward of the windings and is rotationally supported by the stator assembly, and a distal end of the shaft is configured to rotationally couple to the spindle of the deadbolt lock to rotate the spindle in a 1:1 drive ratio with the rotor assembly to, thereby, extend and retract the bolt;
• wherein the electronic door lock does not include a gear reduction for rotating the spindle;
• wherein the electronic door lock is coupleable to the hinged door such that the electronic door lock moves with the hinged door as the hinged door is rotated about a hinge axis;
• wherein the rotor assembly further includes a rotor sleeve to which the permanent magnets are coupled, a rotor shaft assembly, and a thumb turn;
• wherein the rotor shaft assembly includes a rotor flange that is coupled to, extends radially between, and transfers torque between the rotor sleeve and the shaft;
• wherein the rotor flange includes a proximal face and a distal face opposite the proximal face, the thumb turn being coupled to a protrusion extending axially from the proximal face and being configured to be physically engaged by a user to rotate the rotor assembly, and the shaft extending axially from the distal face;
• and
• wherein the cover is arranged between a motor, formed by the stator assembly and the rotor assembly, and the thumb turn, and the protrusion is axially aligned with the shaft and extends from the proximal face in a direction opposite the shaft through an aperture of the cover to be coupled to the thumb turn.