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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 4 is a cross-sectional view showing the structure of
a conventional composite speaker, and FIG. 2 is a cross-sectional view showing an embodiment of
the present invention. 1l ····· treble speaker, 2'..... bass speaker, 3 ...... pole piece with a plate, 5 ......
bass cone diaphragm. 7 · · · Ring-shaped magnet, · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 10 · · ·
voice coil, 11 · · · · · · · · · · · · · · · .... Gaskets, 13 ..... Bimorphs. 14 ········· pole piece. 15 ············ Hightone weather cone. Fig. 1-65-Japanese Utility Model Application Publication No. 50-151629 (2)
Fig. 2-66
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of a multi-panel speaker. In general, few speakers can obtain uniform output sound pressure over
the entire frequency band from 20 Hz to 20 KHz, and most speakers have separate speakers for
bass and treble in a box, or bass A speaker and a network for a basic sound of a cone or horn are
attached to a central portion of a speaker for use as a composite type speaker. FIG. 1 shows an
example of this composite type speaker, and the high-voltage speaker (1) is placed at the center
of the low-frequency speaker (2) and is played with 111486-one pole piece) 1 m) O upper part
IIIL sheet attachment is attached via a hammer (4), and it is configured to apply a signal from a
low frequency cone diaphragm (−) via a gold wire (·) to a chorus tone speaker il +. Incidentally,
+1) ring-like magnet), +81 is a top plate, 1 sld / ampere, (d) is a voice coil S (U + is a frame, (2) is
a gasket. In the conventional composite speaker as described above, the high-pitched speaker (1)
needs to be wound around the network circuit, and the mounting is not carried out on the gold A
(4) plate (3), etc. Is complicated and the number of parts is increased, and moreover, the gold
wire (-1 is broken when adult power is applied because the signal is relayed to the high-tone
speaker (1) by the gold wire (6). The masumi ft 禾 禾 ((6) 微 動 ど こ ど こ 蝿 蝿 蝿 蝿 め る. In
view of the above points, the present invention is an O that intends to provide a low-cost, highperformance, high-performance retractable speaker. One embodiment of the present invention is
shown in FIG. In FIG. 2, the same configuration as that of the conventional 11FJi in FIG. 1 (the
same reference numeral is given to the +249 element, and the description thereof is omitted. In
FIG. 8, in this embodiment, a bimorph fist is formed of a piezoelectric material, and a bass
speaker (! Bonded portion with squeeze diaphragm + i + and scream, ie ylllk * ti +) root tlA 且 ホ
ホ ホ ホ j j jL $ 4 o 4 L of the above bimorph is applied to the upper position, A high-tone
weather cone C @ for fixing Pimorcu's fine motion more effectively is fixed on the as, and a
Pirmol cou lead (not shown) is attached to the cone diaphragm 111K11. Therefore, the speakers
for roaring sound (The reproduction of the low band does not occur even if the network is not
used in one ring, and the distortion is very little in the sword and the low band. Even if the field is
continued for I [I, there is no problem 74: L /% 0 or more As described in detail, according to the
present invention, only the pimorpha made of piezoelectric material and the high-tone cone are
added to the bass speaker The complex type speaker can be constructed with a very simple
structure, and the conventional (3) 50 gold wire is not necessary as in the conventional case
where the speaker r signal is relayed from the low frequency speaker. There will be no cutting or
vibration and the sound quality and reliability will be greatly improved.
That is, a highly reliable composite loudspeaker can be provided at low cost, which is useful.