Decelerating mechanism and electronic device using same

摘要

An electronic device (100) for reading and writing information on an optical disc (200) includes a base (10), a cover (20), and a decelerating mechanism (30). The decelerating mechanism (30) can switch between an unresisting position and a resisting position. When the cover (20) is closed, the decelerating mechanism (30) moves from the resisting position to the unresisting position to allow rotation of the optical disc (200). When the cover (20) is opened, the decelerating mechanism (30) moves to the resisting position for braking and stopping the rotation of the optical disc (200).