| 摘要 |
PROBLEM TO BE SOLVED: To suppress the reduction of power transmission efficiency while sufficiently reducing electromagnetic wave noise, by improving a structure of an electromagnetic wave shield surrounding power transmission and reception coils.SOLUTION: Power transmission and reception coils 4 and 5 are stored respectively in cases formed of tabular enclosure bottom surface parts 11 and 14 and enclosure cover parts 12 and 15 covering the enclosure bottom surface parts, and sides facing respective enclosure bottom surface parts, of the coils face each other. The enclosure cover parts include top plate parts 12a and 15a and side plate parts 12b and 15b surrounding side parts of the coils and are provided with conductive electromagnetic wave shield parts which include top plate areas 17 and 19 corresponding to the top plate parts and side plate areas 16 and 18 corresponding to the side plate parts, to surround the coils. Boundary area separation zones extending throughout around the side plate parts are provided on boundaries between the top plate areas and the side plate areas of the electromagnetic wave shield parts to electrically separate both of the areas from each other, and a side plate area separation zone is provided in one or more positions in the side plate area of each electromagnetic wave shield part to electrically separate areas on both sides of the side plate area separation zone from each other in a circumferential direction. |
