Dust deposition prevention inner angle arc mechanism

The utility model relates to the technical field of air conditioner cases, in particular to a dust deposition prevention inner angle arc mechanism which comprises a dust prevention box and a cleaning brush, and the cleaning brush comprises a scraping plate, a blocking edge, a hairbrush and a driving rod. The dustproof box is fixed to one side of an air inlet of the air conditioner box through bolts, air entering the air conditioner box is filtered and dedusted, after the dustproof box is used for a long time, cracks of the dustproof box are cleaned through the cleaning brush, and specifically, a user opens the dustproof box, holds the driving rod with the hand and pulls the driving rod towards the outer side of the dustproof box, and the dustproof box is cleaned through the cleaning brush. The driving rod moves to drive the scraping plate to slide at the crack of the dustproof box, so that dust at the crack of the dustproof box is cleaned, the cleaning effect of the scraping plate on the dust at the crack of