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JPS6282800

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DESCRIPTION JPS6282800
[0001]
TECHNICAL FIELD The present invention relates to a diaphragm of a speaker unit. 2. Related Art
In recent years, plastic materials have come to be used for diaphragms in order to improve the
performance of speaker units. Hereinafter, an example of the diaphragm of the conventional
speaker unit described above will be described with reference to the drawings. FIG. 3 is a crosssectional view of a diaphragm using a conventional plastic material. In FIG. 3, 1 is a cone paper
made of a plastic material, and 2 is a center cap made of a plastic material. In the diaphragm
configured as described above, since the plastic material is used, the processability is good and
the quality is stable as compared with the conventional paper. Problems to be Solved by the
Invention However, in the configuration as described above, it is difficult to obtain sufficient
rigidity in the diaphragm itself, and it is not preferable in view of design. The present invention
provides a diaphragm made of a plastic material having an excellent design and sufficient rigidity
in view of the above-mentioned interlayer points. Means for Solving the Problems In order to
solve the above problems, the diaphragm of the present invention is provided with irregularities
on the front and back surfaces of the diaphragm made of a plastic material. Operation According
to the present invention, with the above-described configuration, the diaphragm has sufficient
rigidity and rh (high resonance frequency) is raised, distortion is reduced, and an excellent design
is obtained. EXAMPLE A diaphragm according to an example of the present invention will be
described with reference to the drawings. FIG. 1 is a plan view of a diaphragm according to an
embodiment of the present invention. In FIG. 1, 11 is a cone paper made of a plastic material
having irregularities on the front and back, and 12 is a center cap made of a plastic material
having irregularities on the front and back. FIG. 2 is a perspective view showing the state of
unevenness in one embodiment of the present invention. As described above, according to this
embodiment, by providing asperities on the front and back surfaces of the cone paper 11 and the
center cap 12 made of a plastic material, it is possible to increase the rigidity of the diaphragm
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1
and obtain an excellent design. Although the concavities and convexities are in the form of a
lattice in this embodiment, it is needless to say that the structure may be radial, concentric circle,
or the like. Effects of the Invention As described above, according to the present invention, by
providing asperities on the front and back surfaces of the diaphragm made of a plastic material,
it is possible to obtain a rigid design and an excellent design of the diaphragm.
[0002]
Brief description of the drawings
[0003]
1a, 1b and 1c are plan views of the diaphragm in the embodiment of the present invention, A-A
'sectional view and BB' sectional view, and FIG. 2 is provided on the diaphragm in the
embodiment of the present invention FIG. 3 is a cross-sectional view of a conventional
diaphragm.
11 ...... irregularities the provided cone paper, a center cap provided with 12 ...... irregularities.
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