Abstract: An exemplary electronic device includes a shell and a driving module disposed at an inner side of the shell. The driving module has a rotating shaft. The shell defines a recess. The rotating shaft extends through the recess of the shell and is located at a center of the recess. The recess of the shell includes a torus area. The torus area includes an inner side near the rotating shaft, and an outer side far from the rotating shaft. A bottom face of the recess slants gradually and downwardly from the inner side to the outer side of the torus area.

Abstract: An optical disc player includes a main body, a lid, a rotator, and a protective structure. The lid is pivotably connected to the main body. The rotator is disposed in the main body for rotating discs and can be covered by the lid. The protective structure is disposed between the rotator and the lid. The protective structure is capable of suppressing noise and/or damage caused by contact between the rotator and the lid when the rotator operates.