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DESCRIPTION JPS50147625

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DESCRIPTION JPS50147625
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional
external magnet type speaker magnetic circuit provided with a short ring, FIG. 2 is a crosssectional view of a speaker magnetic shunt according to the present invention, and FIG. FIG. 1 is
a magnet, 2 is a plate, 3 is a back plate, 4 is a center ball, 5 air gaps, 6 is a voice coil, 7 is a
magnetic velocity, 8 is a conventional short ring, and 10 is a short provided in the present
invention It is a ring. 1 1 53 1 50-1476 25 2 (2) Figure 2 Figure 3-54-
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an external
magnet type speaker magnetic circuit provided with a short ring tube for removing harmonic
distortion. Generally, an external S-shaped speaker magnetic circuit is configured as shown in
FIG. That is, in FIG. 1, a 1 rlt magnet + 2 rj plate, 3 a back plate, 4 a center pole, an air cap 5 is
formed between the center ball 4 and the plate 2 and a voice coil 6 is inserted. In general, in a
speaker, harmonic distortion may occur. (1) Wrinkles of the voice coil 6 are one of the causes of
VC. -Atmosphere to remove or eliminate wave distortion レ As shown in FIG. Insert it to cancel
out the magnetic flux and remove harmonic distortion. The present proposal is a center ring of a
short ring r magnet, which has been conventionally used for harmonic distortion removal or
reduction from the above-mentioned prior art. [2] FIG. 2 and FIG. In the first embodiment, nine
are shown. As shown in FIGS. 2 and 3, the speaker magnetic circuit of the present invention has
an outer diameter of the short ring 10? The inner diameter of the magnet l is approximately
formed, and the circle pole center pole 4I7) is formed approximately equal to the outer diameter.
Since it is possible to automatically position the Mac 1 (2) 11 'net IF) center simply by inserting
the short ring 10 between them, it is possible to improve the efficiency and accuracy of assembly
of the magnetic circuit. .
12-04-2019
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