Small NB-IOT (Narrow Band Internet of Things) door lock

Abstract

The utility model discloses a small NB-IOT internet-of-things door lock relates to internet-of-things door lock technical field, including touch screen password door lock and door body, wherein the touch screen password door lock is installed on the door body, the shell of touch screen password door lock is provided with the sliding groove, the surface side of touch screen password door lock is provided with the sliding frame, the sliding frame is provided with the sliding groove. Sliding plates are fixedly connected to the two sides of the sliding frame, a containing cavity is formed in the sliding frame, a containing box is fixedly connected into the containing cavity, an air bag is installed on the upper side of the containing box, and a one-way air inlet pipe is installed on the upper side of the air bag; air in the air bag enters the containing box through a countercurrent pipe, the air pressure in the containing box is increased, the screen cleaning liquid in the containing box enters the mounting box through a liquid discharging pipe, and the screen cleaning liquid in the mounting box can wet a wiping plate; and after unlocking is completed, the sliding frame moves downwards, so that the wiping plate wipes the screen of the touch screen password door lock, and fingerprints on the screen of the touch screen password door lock are removed.

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