| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To facilitate removal from an electronic time keeping instrument, and to prevent deterioration in charging power or the efficiency of transmission of information to the electronic time keeping instrument. <P>SOLUTION: A charging apparatus A1 transmits charging power or information to the electronic time keeping instrument B in a non-contact manner. When the charging power or information is transmitted to the electronic time keeping instrument B in a non-contact manner, the transmission portion of the charging apparatus A1 includes a primary-side core 12 oppositely disposed on substantially coaxially with a secondary-side core b2 of the electronic time keeping instrument B, and a primary-side coil 11 wound around the primary-side core 12. The primary-side core 12 includes a projection 13 near the center, and a peripheral wall 15 that is extended outward from the bottom of the center projection 13, is peripherally erected at an end, and includes the circumferential face of the projection 13. The peripheral wall 15 is extended at an upper end of the peripheral wall 15, has a widening section 16 at an upper portion of the upper surface of the projection 13, and has a collar 17 formed by partially cutting an upper surface of the widening section 16. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
