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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing the structure of
a conventional electroacoustic transducer, FIG. 2 is a plan view of the diaphragm shown in FIG. 1,
and FIG. 3 is an electroacoustic transducer of the present invention. It is sectional drawing which
shows a structure. Figure 1 Figure 2 Figure 3-75-Actual Opening 51-2013 (2) Correction Figure
50.3-28 is corrected as follows. Fig. 1-76.
DETAILED DESCRIPTION OF THE INVENTION The present invention provides a speaker
comprising a diaphragm made of an insulating material having a series of conductors, and a
plurality of magnets disposed opposite to each other with a slight gap between the diaphragm
and the diaphragm, It is an acoustic transducer KTIIA. (1) A known electro-acoustic transducer of
this type has, for example, the structure as shown in FIG. (2 ′ ′) Fi A plurality of rod-like
magnets arranged so as to face the diaphragm at a slight distance of 44 and the pole faces
adjacent to the diaphragm have alternately different polarities . t3), (3) a linear conductor formed
by means such as blit on the # 1 dynamic plate 1) in parallel with each other in parallel so as to
be positioned between adjacent magnetic poles; As shown in FIG. 2, the ends of the parallel
portions are connected in a zigzag shape so as to form at least 41 continuous conductors. (4) is a
soft iron plate, which is joined to the outside of the magnets +21, f21, (2 '+ to form a magnetic
path. The broken line indicates the distribution of magnetic flux. 1 to the above configuration?
Since the linear conductor is required to be positioned exactly between the adjacent magnetic
poles, in the joint operation of the magnet 6 to the soft iron plate, careful attention is required to
position the magnet. The magnet 6 was bonded to a predetermined +21 position using a
positioning tool. For this reason, the assembly operation becomes IN-, and the number of
assembling operations increases, and there is a drawback that the assembly requires a long time,
the present invention is a soft iron play) forming a recess for K magnet positioning to improve
the above defects It is Third! 15 is a cross-sectional view showing an electroacoustic transducer
according to the present invention, 11) is a diaphragm, (2), + 2i, f2 ′ ′) is a rod-like magnet, (s),
rsi is a conductor formed on the diaphragm, + 4iFi Soft iron plate, IIJ1 part f51 is formed by
press molding on the magnet joint surface of soft iron plate (4)-The depth of this recess (5) is
small because it is the position of the magnet If it does not increase the magnetic resistance of
the magnetic path, a plurality of wedge-shaped magnets 6 (21, 12), + 2it-inserted and joined to
the above-mentioned recess (5) via an adhesive. As mentioned above, the proposal is the H part
for positioning the magnet 6 on the magnet joint surface of the soft iron plate (4)? Since it is
formed, it is not necessary to fix the soft iron plate and the magnet in one case, and it is not
necessary to simultaneously adsorb (adjoining adjacent magnets magnetized simultaneously with
each other). Thus, the time required for assembly can be significantly reduced.
Also, since the positioning of the magnet on the soft iron plate can be performed very accurately,
it will be easy to obtain a product with uniform characteristics
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