Patent ID: 6898154

Claim:
A clock-driving device combined with a conventional core, comprises: a conventional core device, operated with a conventional core and displaying time with hands including a second hand; a power supply, for supplying electric power to said core and a motor; a magnet, provided at an appropriate position on the second hand of said conventional core device; a reed sensing device, provided at an appropriate position on said conventional core; a motor, provided in the same loop as the reed sensing device such that it can be triggered to rotate and output rotational mandrel; a micro-motive device, comprising a micro-switch having a button, a teeterboard member and a gear engaged with said motor to drive the output rotational mandrel, wherein a protuberance is provided on said gear, and wherein as the teeterboard member is driven to press down or release the button, the micro-switch will be switched and thus change the communication path of the motor loop; wherein, by providing said magnet on the hand of said conventional core, and providing said reed sensing device at a suitable position in the moving path of said magnet, as said magnet enters the sensing region of said reed sensing device, sensing said magnet by said reed sensing device will generate a communication path, and then trigger said motor to drive said micro-motive device as well as to rotate the output rotational mandrel; and wherein, as said motor driving said rotational mandrel to accomplish one action, said micro-motive device will interrupt said communication path so as to save electric power.