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Description of Invention
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loudspeaker and
is easy to assemble as compared to a general dynamic loudspeaker and capable of obtaining the
same characteristics as a ribbon loudspeaker. Hereinafter, the VC according to the embodiment
of the present invention will be described in detail with reference to the drawings. In FIG. 1,
reference numeral 1 denotes an annular diaphragm holder 211: t is a thin plate-shaped
diaphragm fixed to the step FfiS1 'of this holder. The diaphragm 2 is made of an appropriate
material with good elasticity, and on its front and back surfaces, a spiral thin film coil 3 is formed
as shown in the second wing by a known method such as printed wiring destruction, vapor
deposition, or sputtering. Forgiveness. The coil 3 is wound on the diaphragm 2 in the same way
from the outer periphery to the central portion, and the goyle at the central portion is connected
to the back of the diaphragm by the through hole, and the coil 3a on the back is from the
through hole to the outer periphery It is shaped and wound on a cloth roll. And the lead wire
4.46 is connected to the terminal of coil 3.3eL of front and back, and it is a drawer. A flat plate 2EndPage: 1 shaped magnet 5 is inserted in the holder 1 circle on the lower surface of the abovementioned diaphragm 2, and a plurality of air escape holes 6 are aligned and opened on the
whole. The magnet 5 is a surface magnetism having magnetic poles firmly on the front and back.
The magnet 5 and the holder 1 are encased by a magnetic material, for example, a container 7
such as sand iron, and at the bottom of the container, an air escape hole 8 is opened
corresponding to the air escape hole 6 of the magnet 5. A top plate 9 made of a magnetic
material such as sand iron is provided on the upper surface of the diaphragm 2. The sound path
10 is opened in the top plate 9 at a position corresponding to the air escape hole 6 of the magnet
5, and the surface side of the sound path is a short horn expanded in a trumpet shape. In the
above configuration, the diaphragm 2 that is wedged between the magnet 5 and the top plate 9
has a slight gap formed between the magnet and the top plate so that its own vibration action is
not impeded. When an alternating current is supplied to the coil of the diaphragm 2, the
diaphragm is excited by the coil magnet electric action to generate sound. The vibrating plate 2
has a structure in which the driving force of its oscillation is integrated with the sounding body,
and the oscillating action of the vibrating plate is converted into 3-pronouncing action. Get out.
As described above, the present invention provides characteristics similar to those of a ribbon
speaker as compared with a general dynamic speaker, and the assembling operation is extremely
simple, and the manufacturing effect is large. In addition, since the sound path of the top plate is
a short horn whose surface side is formed in a trumpet shape, the loudness of the sound can be
enhanced and the efficiency of sound volume and sound quality can be enhanced by the air
escape hole of the magnet. The effect is great.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention,
FIG. 1 is a cross-sectional view, and FIG. 2 is a plan view of a diaphragm. DESCRIPTION OF
SYMBOLS 1 ... Diaphragm holder 2 ... Vibrating board 3.4 ... Coil 5 -... Magnet 7 ... Container 8 ... 9
air escape hole 9I .. Top plate 10 fist .. Sound path. 4−EndPage: 2
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