JPS51147037

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DESCRIPTION JPS51147037
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a single unit, FIG. 2 is
a cross-sectional view of FIG. 1 A-A, FIG. 3 is a cross-sectional view of a diaphragm, and FIG.
Figure 5 is a cross-sectional view of Figure 4B-B. DESCRIPTION OF SYMBOLS 1 ... Pack grade 2, 2
... Magnetic pole surface of a disk plate, 3 ... Grooved part, 4 ... Air hole, 5 ... Top plate, 6 ...
Magnetic pole surface of a top plate, I: projection for termination, 8: diaphragm, 8a: valley, 9:
edge. 10 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · horn-like part. Fig. 1 2'-83. Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 1
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electroacoustic
transducer. The inventor invented and proposed an electroacoustic transducer as shown in FIGS.
1 to 5 in order to comprehensively improve the problems of the conventional direct emission
type speaker, In the electro-acoustic transducer like this, the conductor has a deformed shape, so
the length is long and inductance tends to be generated, and the conductor becomes large in
mass, accompanied by the reduction of the rounded high region energy There is a fear.
Therefore, the present invention proposes an electroacoustic transducer in which the opposing
magnetic poles of the magnetic circuit are electrically shorted in the electroacoustic transducer
as described in the above to suppress the increase in inductance and increase the energy in the
high region. It is a book. Hereinafter, an embodiment of the present invention will be described
based on the drawings. FIG. 1 is a cross-sectional view showing the structure of a single unit, FIG.
2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a cross-sectional view
showing the structure of a diaphragm. (2) In the figure, reference numeral 1 denotes a pack
plate, which has a long rectangular shape and has a channel-like recessed groove 3 at its center
so that the magnetic pole faces 2 and 2 can be formed. At the same time, the air holes 4 are
perforated. A five-pole top plate, which is juxtaposed to form a space for sound wave radiation,
and has a pole face 6 corresponding to one pole face 2 of the pack plate 1 and the other of the
adjacent pack plates 1 ' It has a magnetic pole face corresponding to the magnetic pole face 2 ',
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and an end projection 4-7 is formed at the center. It is an 8 叶 diaphragm and has a 7-shape, and
its valley 8a is composed of a compliance body. The diaphragm is disposed so as to be located in
the recessed groove portion 3 and is fixed to the end projecting ridges 7 of the top plate 5 on the
left and right through the edges 9 respectively. The magnetic conductor is an odd conductor such
as 10 mm aluminum, which is mounted on the diaphragm 8 within the magnetic gap formed by
the magnetic pole faces 2 and 61C and is disposed as shown in FIG. .... As shown in FIG. 3, the
vibration M8 is constituted by two layers of a compliance creased eye 11 and a rigid body 12,
and only the slope requiring the rigidity is reinforced with the rigid body. The compliance body is
preferably a thin film such as Mylar film (poly xx-y-le), metal foil or cloth, and as the rigid body,
wood pulp, leather, metal (titanium, aluminum, zirconium, beryllium) Etc.) as long as high
Young's modulus can be obtained. The edge 9 is directly connected to the conductor 10 to avoid
reflections.
9a It is a viscous agent. Next, FIG. 4 and FIG. 5 show the configuration of the magnetic circuit,
FIG. 4 is a cross sectional view, and FIG. 5 is a cross sectional view of FIG. As described also in
FIG. 1, the magnetic circuit is constituted by the top plate 5, the back plate 1 and the magnets 13
and K as shown in FIG. 5, but as is apparent from FIG. Because it is in a fixed direction, the
magnet 13 is assembled to be common to all units; (4) 7 can be inserted, and the special 4 is not
necessary. However, since the conductor 10 has a deformed shape, the length is long and
inductance is likely to be generated, and since the conductor is large in mass, it is likely to cause
reduction of high-pass energy. Therefore, in order to solve this problem, the present invention
electrically shorts the opposing magnetic poles of the magnetic circuit to suppress the rise of the
inductance and increase the energy of the high region, as shown in FIG. 4, the top plate 5 and the
back plate 1 respectively. A short pole 1a, 5a such as a pot or silver is provided on the opposite
magnetic pole of the above to achieve constant indida / sintering. A large number of units
configured as shown above are combined side by side in a cylindrical shape to improve
directivity and improve busyness * O. Next, to describe the sound generation process of 1 unit,
the% V-shaped moving plate 8 and its valley 8a are opened and closed as hinges, @ 0 0111 air is
compressed and scattered by 1 ot JI′′Lr & ieo * 1 As a result, all sound waves are emitted
forward of seven characters. The emitted sound waves are emitted by the horn 14 in a form close
to a plane wave in space. Rounding to absorb stress by edge expansion and contraction Basically,
only expansion and contraction are carried out, and no acoustic noise is involved. This means
that anti-resonance does not occur. According to the present invention, the generation of the
inductance based on the deformed shape of the electric conductor can be corrected in one
direction and the large mass of the electric conductor can prevent the reduction of the high
mechanical energy. A more powerful effect can be exhibited by this electro-acoustic transducer.
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