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US 7,071,805 B2Granted
Multilayer ceramic coil and motor using the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMakoto Hasegawa, Tsuguo Inazawa, Keisuke Ueda
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Abstract
A multilayer ceramic coil (4) for use in a compact motor is configured so that ceramic layers (4c) having a plurality of coil patterns (4a) and (4b) printed using a conductive paste are laminated, and that the coil patterns in respective layers are electrically connected via thru-holes (4d) to form a single multilayer ceramic structure having a plurality of phases of patterned-coil.
Claims7
A motor comprising:
- a multilayer ceramic coil formed by a plurality of laminated ceramic layers on which patterns are printed, said patterns being formed of conductive paste;
- wherein said multilayer ceramic coil includes
- a first ceramic layer having a plurality of electrically independent coil patterns printed thereon, said coil patterns being formed of conductive paste,
- a second ceramic layer having an electrical crossing pattern printed thereon, said crossing pattern being formed of conductive paste, and
- a third ceramic layer having a terminal pattern printed thereon, said terminal pattern being formed of conductive paste;
- wherein said first, second and third ceramic layers are arranged so as to constitute a single multilayer ceramic structure having a plurality of phases of coils, and wherein said coil patterns, said crossing pattern, and said terminal pattern are electrically connected via through-holes in said ceramic layers;
- and
- wherein said terminal pattern of said third ceramic layer is formed with a common terminal and with a plurality of individual terminals equal in number to said plurality of phases of coils, said terminal pattern being electrically connected to each of said coil patterns.
5 more elements
Dependencies are inferred from the claim text.