Positioning mechanism for a radio clock

Abstract

A radio clock, which is a mechanical clock with an hour hand, a minute band a second hand driven by motors, comprises an antenna, a receiving circuit, and a processor to receive timing information as the reference time for time setting. An hour pinion, minute pinion, and a second pinion are engaged respectively with an hour transmission pinion, a minute transmission pinion, and a second transmission pinion. The hour transmission pinion, the minute transmission pinion, and the second transmission pinion are provided, respectively, with an hour masking disc, a minute masking disc, and a second masking disc, wherein the hour masking disc, the minute masking disc, and the second masking disc are provided with protruded masking fins, respectively. The transmission pinions are configured to close to their corresponding masking discs. When the radio clock actuates its time-setting function, a photoelectric sensor which is employed to detect the hour masking fin, the minute masking fin, and the second masking fin and determine whether the hour hand, the minute hand, and the second hand reach their expected positions.

Dependencies are inferred from the claim text.