A packaging box

Abstract

A packaging box includes two side plates disposed oppositely, and each of the side plates provided with an inward recession; and two engaged-embedded parts disposed oppositely; wherein, the inward recession is matched with the engaged-embedded part, and the engaged-embedded part is placed into the inward recession. A cross-sectional shape of the engaged-embedded part is a trapezoid shape, and one acute angle of the trapezoid shape faces toward a top of the side plate. When moving the packaging box, the mechanical arm can embed into the engaged-embedded part. The engaged-embedded part formed by a hard-rigid material can prevent the mechanical arm from damaging the packaging box to reduce the waste of the packaging material. Besides, the cross-sectional shape of the engaged-embedded part is a trapezoid shape so that when the mechanical arm clamps the packaging box, the packaging box is not easily to drop in order to prevent the loss.

Dependencies are inferred from the claim text.