Coil device
AssigneeTDK Corporation
InventorsShinichiro Ito, Yukiharu Kinoshita
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Abstract
The present invention provides a coil device including magnetic cores having gaps at positions of at least opposing to each other in a magnetic path to be formed and a coil wound to include at least one of said gaps and its improvement consists in the fact that a shape of at least one of the opposing magnetic cores forming; the gaps around which said coil is wound is made as a curve of logarithmic function from its base end to its extreme end and its most extreme end is provided with a gap adjusting flat surface. With such an arrangement as above, the present invention provides a coil device capable of reducing a leakage magnetic flux generated around the gaps, preventing an abnormal generation of heat of the coil and further preventing a bad influence of noise against a peripheral apparatus.
Claims11
A coil device comprising:
- a plurality of magnetic cores constituting a magnetic path;
- at least one gap being provided between said plurality of magnetic cores;
- and
- at least one coil being wound around said gap;
- wherein
- said gap is formed between two ends of said plurality of magnetic cores;
- each of said two ends of said plurality of magnetic cores has a form of a curve of a logarithmic function from a base end to an extreme end;
- and
- said extreme end is provided with a gap adjusting projection facing the other of said two ends of said plurality of magnetic cores to thereby form said gap.
Dependencies are inferred from the claim text.