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JPS5588581

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DESCRIPTION JPS5588581
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, FIG. 2 and FIG. 3 are partial views of the
diaphragm of the present invention. 1 is a substrate, 2 is a hollow body, 3 is a binder, 4 is a
mixed layer.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a
speaker diaphragm. In general, a hard substance is applied to the surface of a diaphragm
substrate formed of natural pulp or synthetic fibers of a diaphragm for a speaker to impart
rigidity to the diaphragm. Although the plate was considered, there was a drawback that the
efficiency was lowered due to the large density. Also, it is conceivable to apply a mixture of a
hollow body such as a hollow glass body or a ceramic hollow body and a synthetic resin to the
surface of the fibrous diaphragm base to apply and form a mixed layer-12, which is relatively
lightweight and bulky. Although the thickness is increased and the thickness is increased to
increase the rigidity, the rigidity is not sufficient for imparting rigidity, and since it is bonded by
the organic binder, there is a defect that the Young's modulus of the diaphragm is lowered. The
present invention was devised to eliminate the above-mentioned drawbacks, and to explain the
embodiment shown in the drawings, as shown in FIGS. 1 and 2, one side of the diaphragm
substrate 10 formed of natural pulp or synthetic fiber or It is a diaphragm for a speaker in which
a mixture of an inorganic hollow body 2 such as a glass hollow body or a ceramic hollow body
and an inorganic binder 3 such as a ceramic-based binder is applied on both sides to adhere and
form the mixed layer 4. In the present invention, as shown in FIG. 3, a mixture of an inorganic
hollow body 2 and an inorganic binder 3 is applied on one side of a diaphragm substrate 1 to
form a mixed layer 4 by adhesion, and the diaphragm substrate 1 is adhered thereon. Speaker
diaphragm. The diaphragm according to the present invention has a structure as described
above, so it is relatively lightweight and has high rigidity. For example, it is a mixed layer formed
by coating and forming a mixture at a ratio 3 of the ceramic hollow body 2 and the ceramic
binder 1 : The density is 0.92 grams, and the density is 0.95 grams. The speaker using the
10-05-2019
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diaphragm according to the present invention raises the upper limit of the high frequency range
to expand the vibration frequency range, and maintain the appropriate internal loss to improve
the frequency characteristic. The inorganic hollow body 2 includes, in addition to the illustrated
glass hollow body and ceramic hollow body, a phenol resin hollow body, a carbon hollow body, a
kanamite hollow body, a fly ash hollow body, a silica hollow body, a volcanic rock hollow body
and the like. It is a thing. The present invention is a speaker diaphragm for attaching and forming
the mixed layer 4 of the inorganic hollow body 2 and the inorganic binder 3 on the diaphragm
substrate 1 formed of natural pulp or synthetic fiber as described above. It is a device that has
high Young's modulus and moderate internal loss, and when used in a speaker, can withstand a
large output and obtain excellent frequency characteristics and a wide reproduction frequency
band.
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