| CPC E05B 47/0012 (2013.01) [E05B 2047/0017 (2013.01); E05B 2047/0036 (2013.01)] | 7 Claims |
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4. An electronic control door lock comprising:
a latch device including a latch bolt movable between a latching position and an unlatching position;
an inner operational device operatively connected to the latch device for moving the latch bolt from the latching position to the unlatching position;
an outer operational device operatively connected to the latch device for moving the latch bolt from the latching position to the unlatching position;
an activation member movable between a first position and a second position, wherein when the activation member is in the first position, the outer operational device is incapable of moving the latch bolt to the unlatching position, and wherein when the activation member is in the second position, the outer operational device is operable to move the latch bolt to the unlatching position;
a rotating shaft rotatably supported in the activation member and including a driving thread on an outer periphery thereof;
a motor disposed in the inner operational device and configured to drive the rotating shaft to rotate in a forward direction and a reverse direction; and
a driving spring in threading connection with the driving thread, wherein when the rotating shaft rotates in the reverse direction, the driving spring actuates the activation member to move to the first position along a longitudinal axis, and wherein when the rotating shaft rotates in the forward direction, the driving spring actuates the activation member to move to the second position along the longitudinal axis;
wherein the activation member includes:
a sleeve portion mounted around and rotatable relative to the rotating shaft, wherein the sleeve portion includes an inner end and an outer end spaced from the inner end along the longitudinal axis, wherein the sleeve portion further includes a guiding groove extending along the longitudinal axis and spaced from the inner end and the outer end, and wherein the driving thread and the driving spring are located in the guiding groove; and
an activation portion in frictional contact with the outer end of the sleeve portion, wherein the activation portion further includes a leg extending in a radial direction perpendicular to the longitudinal axis, wherein the outer operational device includes an outer spindle and an outer handle coupled with the outer spindle to pivot therewith, wherein the leg and the outer spindle are movable along the longitudinal axis and are not pivotable relative to each other, and wherein when the rotating shaft rotates, the activation portion prevents rotation of the sleeve portion.
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