Atomization device and counter module for the same

An atomization device, wherein the atomization device comprises:

• an upper housing and a lower housing, wherein the upper housing is configured to mount a container for containing liquid, and the container is movable in an axial direction of the atomization device between a release position and a stretch position, and wherein the stretch position is closer to a proximal end of the atomization device than the release position;
• and
• a counter module mounted inside the lower housing and for counting the movement of the container between the release position and the stretch position, wherein the counter module comprises:
• a positioning shaft extending distally from an inner bottom surface of the lower housing;
• a rotatable sleeve sleeved outside the positioning shaft, wherein the rotatable sleeve is movable axially along the positioning shaft and rotatable about the positioning shaft, and wherein the rotatable sleeve has a movable serrated surface facing towards a distal end of the atomization device;
• a touching member coupled to a distal end of the positioning shaft, wherein the touching member is movable axially along the positioning shaft and not rotatable about the positioning shaft, and the touching member comprises a flange operably engagable with the movable serrated surface;
• and wherein, in response to that the container is moved towards the stretch position so that the flange is at least partially engaged with the movable serrated surface, the flange and the movable serrated surface, when mutually engaged, are configured to generate a circumferential force that rotates the rotatable sleeve;
• a slidable ring sleeved outside the rotatable sleeve and threadedly coupled to the rotatable sleeve, and wherein the slidable ring is movable axially along the positioning shaft but is not rotatable about the positioning shaft;
• and
• a bias spring mounted outside the positioning shaft, with a first end abutting against the inner bottom surface of the lower housing and a second end abutting against the rotatable sleeve;
• wherein the rotatable sleeve is configured to be pressed by the touching member and move proximally to compress the bias spring in response to that the container moves from the release position to the stretch position;
• the rotatable sleeve is configured to be no longer pressed by the touching member so that the bias spring is released to push the rotatable sleeve to move axially towards the distal end of the atomization device in response to that the container moves from the stretch position to the release position;
• during at least a part of the axial movement of the rotatable sleeve, the circumferential force configured to be generated by the flange and the movable serrated surface, when mutually engaged, is configured to drive the rotatable sleeve to rotate relative to the slidable ring and change an axial position of the slidable ring on the rotatable sleeve.