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"Invention υ", 1, f / 'C coming up with respect to the speaker resonance device, the speaker uses
a cone paper etc., and the resonance action In the present invention, a spiral-shaped engraving 1
is provided on a printed circuit board “t′j (printed resin like resin on one side, two layers of
metal j1)) rtc) If it is a bend, it is something that makes the resonance work I11 happen 11.1].
FIG. 1A, 1. −そ−の/11. The plane view of the '41 -shaped deck coil 2 is shown. The 21st ·
Xl r, I :, own i I O real M 4 Example yen 7 R? If there is a gap between two sheets of U1 anti-coils,
resonance will occur and a noise will be produced. Fig. 3 shows a flat sheet coil 6.1 in which
spiral incised grooves are formed on the front and the back in a single sheet configuration, and
the intermediate layer 8 is held between them to form three layers in one sheet. When two pieces
are brought close to each other, one of them works as a magnet and sounds well. In FIG. 4, two
flat plate coils 9 ° 10 are opposed to each other with the cylindrical magnet 11 having a space
at the center, and the better sound can be obtained by the action of the magnet 11. is there.
According to the present invention, the speaker cone resonates even without paper noise,
produces a long sound, is easy to automate production, is lighter in weight than the conventional
one, has high sound quality and is stable, does not take space, and so on It is a certain thing. The
spiral notches may be on one side or both sides. Moreover, this can be used for a wide range of
applications as well as audio equipment, earphones, headphones, reception of telephones, etc. ,
Brief description of the drawings
The drawings show the present invention, FIG. 1 is a plan view of a coil, FIG. 2 is a sectional view
of the first embodiment, FIG. 3 is a sectional view of the second embodiment, and FIG. 4 is a
sectional view of the third embodiment. FIG.
Description of n No. 1 · · · Vortical notches 2 · · · · · · · · · · · · · · · · · · · · · · · · · · · · flat plate coil 6.7 · · · - flat coil 8 ........ intermediate layer 9.10 ... flat coil 11 ......... magnet applicant Satoshi Mitsuya
Attorney Attorney transverse groove formed beauty. Fig. 1 · 2 牙 3 Fig.
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