DESCRIPTION JPS55149599

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DESCRIPTION JPS55149599
Description 1 Title of Invention
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic front sectional view showing a
moving coil type magnetic circuit, FIG. 2 is a schematic plan view showing a diaphragm and a
voice coil, and FIG. 3 occurs in the diaphragm FIG. 4 is a schematic front view showing an eddy
current, FIG. 4 is a schematic front sectional view showing a change of the amount of magnetic
flux in the magnetic circuit, and FIG. 5 is a schematic front sectional view of a magnetic circuit
according to the present invention. 1 is a magnet, 2 is a central magnetic pole, 3 is a yoke. 4 is a
pole disk, 5 is a diaphragm, 6 is a voice coil. Kha center ring, 8 is a damper, 9 is a damper
adjustment screw, 10 is a lens-like hardware, ie is an eddy current generated by the voice coil, im
is an induced skin current generated by vibration of the voice coil, lc is a conductive resin around
2) a central magnetic pole having the film, 3c a yoke having the film, 4c a magnetic pole disk
having the film, 10C a lens-like gold material having the film, 1 an audio input current And ie are
eddy currents generated by the voice coil, and im are induced skin currents. Patent applicant
Namiki Precision Jewelry Co., Ltd. EndPage: ２
12-04-2019
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