A sliding mechanism comprises a main plate, a sliding plate, a sliding enabling member and a biasing assembly. The sliding enabling member is coupled between the sliding plate and the main plate so the sliding plate slidably engages with the main plate. The biasing assembly is coupled between the sliding plate and the main plate. When the sliding plate is slid from a closed position to an intermediate position, the biasing assembly is distorted to exert a force on the sliding plate and the main plate, causing the sliding plate to automatically slide toward an open position once the sliding plate passes the intermediate position.