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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a speaker
diaphragm according to the present invention, FIG. 2 is a partially enlarged sectional view of FIG.
1, and FIG. 3 is the same portion as FIG. It is a partially expanded sectional view of another
example. 1 ··· cone, 2 ··· surface, 4 ··· low.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of a loudspeaker diaphragm made of pulp. Currently, many diaphragms (corns) of dynamic
speakers are manufactured using paper (bulb) as a raw material in terms of weight, Young's
modulus, internal loss, sound quality and the like. (Heat paper has hygroscopicity, Young's
modulus, internal loss or change depending on the moisture content, and the sound quality
fluctuates greatly. Also, in order to increase the internal loss of corn, it is also practiced to apply
an emulsion adhesive mixed with metal oxides and minerals to corn paper, but this also has the
disadvantage of being very weak against humidity. Kaa-Tah. . Therefore, in order to solve all the
drawbacks as described above, the present invention aims to improve the moisture resistance by
impregnating the corn paper with the wax or coagulating it on the surface, as well as internally
An object of the present invention is to provide a speaker diaphragm which can increase the loss.
Hereinafter, the present invention will be described by way of an embodiment of the drawings.
FIG. 1 is a longitudinal sectional view of an imaging plate according to the present invention, and
FIG. 2 is a partially enlarged view of FIG. In the drawings, reference numeral 1 denotes a cone for
a dynamic speaker, and the cone 1 is made into a cone shape using a beaten valve as a raw
material, dewatered, molded and dried and manufactured. The fibers in the cone 1 of the la + -11
arrangement, 2 is the surface of the cone 10, 3 is the top of the cone l. Next, in the cone 1
produced according to the above, wax 4 is allowed to settle, but as shown in FIG. 3, the wax 4
may be solidified on the surface 2 of the cone 1. Here, as the above-mentioned wax 4, a wax such
as baraque / wax, black wax, microcrystalline wax referred to as X6 or microcrystalline wax, or
the like, which is now referred to as H-type monthly LC wax, is used. 1121) The present
invention improves the moisture resistance because the wax 1 is impregnated or solidified on the
surface 2 of the cone 1 which is formed by making the beaten par and paper into a cone shape
and forming and drying it as described above. At the same time, since the internal loss of the
cone 1 is increased by the low 4, smooth frequency characteristics are obtained and the sound
quality is improved. In particular, since the present invention impregnates the cone 1 with the
wax 4 or coagulates it on the surface 2, it is suitable for a speaker used outdoors, a speaker used
in a high temperature place such as a bath or a rocker,