Alarm-presetting mechanism for automatic alarm clock setting alarm at front

The utility model relates to an alarm-presetting mechanism for an automatic alarm clock setting alarm at front. The utility model is characterized in that the alarm-presetting mechanism comprises an alarm wheel, a transparent alarm-presetting disc, a transparent cover, an alarm-presetting ring and a positioning spring. The alarm-presetting disc is arranged on the alarm wheel. The transparent cover is arranged on the clock, a groove on the inner circle of the transparent cover is fitted with a bulge on the alarm-presetting disc, and the outer ring of the transparent cover is provided with uniformly distributed teeth. The alarm-presetting ring and the transparent cover are arranged together. The positioning spring is arranged beside the toothed ring of the outer ring of the transparent cover. The utility model has the advantages that the structure is novel and reasonable, the alarm setting is accurate, alarm errors are reduced, alarm time can be adjusted at front, and the operation is convenient.