US Patent 11874708 Electronic device

An electronic device includes at least one hinge assembly and two bodies. The hinge assembly includes a main body and two shafts. One end of each of the shafts is pivotally connected to the main body, another end of each of the shafts has an embedded portion, and the embedded portion has a roughened structure thereon. The two bodies correspond to the two shafts respectively, each of the bodies has at least one depression, and the embedded portion of each of the shafts is embedded in the depression of the corresponding body and contacts an inner wall of the depression through the roughened structure.