| 摘要 |
PURPOSE: To provide an electronic wristwatch comprising a small, light-weight generator capable of generating sufficient electric energy with a small rotational frequency ratio and mountable outside a current movement. CONSTITUTION: Pinions 5 of a plurality of roters 6 engage with a gear 4 having an oscillating weight fixed thereto. The roters 6 are disposed at ends of stators 9 annually located in the periphery of a substrate and coils 10 are wounded around core portions of the stators 9, In such a simple structure, large output of electric energy can efficiently be produced with a not-so-large rotating ratio between the oscillating weight and the pinion of each roter 6. A receiving portion for a movement of a conventional wristwatch is provided in the substrate. A electric energy generating module comprising a substrate, an oscillating weight, roters 6 and stators 9 can be used in combination with a movement of a conventional wristwatch. |
