Outer Operating Device for a Door Lock

An outer operating device for a door lock comprising:

• a mounting plate including a through-hole, with the mounting plate adapted to be mounted to an outer side of a door;
• a casing fixed to the mounting plate and aligned with the through-hole, with the casing including a first installation space and a second installation space;
• a mounting seat fixed to the mounting plate and located in the first installation space of the casing, with the mounting seat including a first pivotal end, a second pivotal end, and a stop end, with the first pivotal end located between the stop end and the second pivotal end, and with the mounting seat further including an installation space;
• a cylinder mounted in the second installation space of the casing, with the cylinder including a lock core and an actuating block coupled to the lock core, wherein the actuating block is pivotable when the lock core is in an unlocked state;
• a driving wheel pivotably mounted in the installation space of the mounting seat and located on the first pivotal end of the mounting seat, with the driving wheel including first and second sides and an outer periphery extending between the first and second sides, with a stop block and a driving toothed portion formed on the outer periphery of the driving wheel and spaced from each other in a circumferential direction about a pivotal axis about which the driving wheel pivots, with the driving wheel further including a track extending from the first side through the second side of the driving wheel, with the driving toothed portion of the driving wheel facing the second pivotal end of the mounting seat, and with the stop block facing the stop end of the mounting seat;
• a movable block slideably received in the track of the driving wheel, with the movable block including a first face and a second face opposite to the first face, with the movable block further including a notch in the second face, with the movable block movable along the track between a joint movement position and a disengagement position;
• a follower coupled to the movable block, with the follower jointly movable with the movable block, with the follower including a protrusion extending beyond the mounting seat, wherein when the actuating block of the cylinder pivots to presses against and move the protrusion of the follower, the movable is driven to move between the joint movement position and the disengagement position;
• a driving member pivotably mounted in the installation space of the mounting seat and located on the second pivotal end of the mounting seat, with the driving member including a follower portion and a driving portion, with the driving portion including a distal end distant to the follower portion, with the driving member including a driven toothed portion meshed with the driving toothed portion of the driving wheel, with the distal end of the driving member moving between a pressing position and a release position when the driving wheel pivots, with the distal end of the driving member adapted to couple with a latch device mounted to the door, with a latch of the latch device adapted to be in an unlatching position when the driving member is in the pressing position, and with the latch of the latch device adapted to be in a latching position when the driving member is in the release position;
• and
• a lever pivotably connected to the first pivotal end of the mounting seat, with the lever including a pressing end located on the casing and a movable end located outside of the casing, with the lever further including an axle hole adjacent to the pressing end, with the axle hole of the lever pivotably connected to the first pivotal end of the mounting seat, and with the pressing end of the lever aligned with the movable block,
• wherein when the driving member is in the release position, the stop block of the driving wheel abuts the stop end of the mounting seat,
• wherein when the driving member is in the pressing position, the stop block of the driving wheel is spaced from the stop end of the mounting seat in a circumferential direction about the pivotal axis of the driving wheel,
• wherein when the movable block is in the joint movement position, the pressing end of the lever is not aligned with the notch of the movable block,
• wherein when the movable block is in the disengagement position, the pressing end of the lever is aligned with the notch of the movable block,
• wherein when the movable block is in the joint movement position and when the driving member is in the release position, if the lever is pivoted, the pressing end of the lever presses against the second face of the movable block, causing pivotal movement of the driving wheel to pivot the driving member from the release position to the pressing position, and
• wherein when the movable block is in the disengagement position and when the driving member is in the release position, if the lever is pivoted, the pressing end of the lever moves into the notch of the movable block, and the driving wheel and the driving member are not moved.