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JPS4993234

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DESCRIPTION JPS4993234
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall view of a diaphragm for a soft dome
speaker according to the present invention, and FIG. 2 is a cross-sectional view thereof. E и Resin
for shape retention, 13 и и и и и и и и и и Resin for software. Figure 2 1 79 1
[Detailed description of the invention] This invention improves the material of the base material
of the speaker diaphragm, especially the soft dome speaker, and is characterized by combining
the dome shape holding ability and the material flexibility. It is an object of the present invention
to provide a diaphragm. In the past, the image & motion of a soft dome speaker was made by
impregnating a cotton fabric with a thermosetting temple of phenol temple to make it retain its
shape and retain its shape, and on top of that, it has an air resistance and flexibility. In order to
hold the rubber dump material is applied. In the case of such a material, the shape retention
property ? и nonreciprocal fraction is ? ?) which is compatible with the dimensions due to the
moisture stratification due to the suction 74r of the axis outside the dome law in the ?1-1 east
plate of such material On the other hand, in the case where the shape is produced with a
synthetic fiber cloth such as teto (1) /, the adhesion to the shape-retaining resin is scraps, so that
it is necessary to have the above properties. In this consideration, good adhesion between the
hydrophilic fiber and the shape-retaining resin results in the shape being clumped, and the
difference in adhesion between the hydrophobic fiber and the shape-retaining resin is utilized to
make the slip (r The 9) peristaltic plate is designed to have an optional softness. In order to
achieve such purpose, this invention is intended to construct a diaphragm by using a fabric
having hydrophilicity and hydrophobicity as a substrate. Hereinafter, this invention will be
specifically described with reference to the drawings. jA1 shows an overall view of the vibration
relief 1 for a soft dome speaker according to the present invention, and FIG. 2 shows both sides
of the base material 10 showing a cross-sectional view formed by cutting along the dotted line xx 'axis. Is impregnated with a shape 1411.12. ??? The outer surface of the stool 12 is
impregnated with 13.14 on the soft side 11. The material 10 is made of a mixture of hydrophilic
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fibers and hydrophobic fibers 2). The mixing ratio of hydrophilic fibers to hydrophobic fibers was
in the range of 50:50 to 20:80, preferably in the range of 40:60 to 30 near 0. If the ratio of
hydrophilic fibers is less than 2oX with respect to this range, the affinity between the base
material and the resin for holding cells is insufficient, so that there is a disadvantage that the
shape-retaining property when made into a product may be disadvantageous. On the other hand,
if it is 50X or more, the shape retention due to humidity change will be poor and it will become
inmM. Also, the fibers are reduced to retain the softness, and as a result, the fabric becomes
thicker. Since the soft phase resin 13 used together with can not be well maintained, airtightness
is excellent <<, so it is impossible to use only one cloth + lo (generally for knots, airtightness
holding bar has an affinity for hydrophilic fibers And cedar-like holding resins are affinity or
large).
In the general form, the aspect ratio of the fabric should be IHI. Hydrophilic M fiber may be a
large-diameter continuous fiber such as cocoon or hemp, or a semi-synthetic cocoon such as
Reyno fiber, or hydrophobic? + Synthetic fibers using polyamides such as polyethylene
terephthalate (12) and nylon etc. are suitable as woven fibers, and molding resins may be phenol
resins or their modified products. Especially this one of the inventor! The composition of the
diaphragm 1 which was effective in the test was the following: (1) the mixing ratio of the cloth of
the base material cotton dipolyethyleno terephthalate ML fiber = 35% 65% (2) resin for shape
retention ииииииии Phenolic resin (3) Soft airtightness resin housing иии Synthetic rubber (dispersed in
solvent) This invention has been described above in a static manner, but according to this
invention, it is hydrophobic It is possible to effectively deposit the shape rigidity of the
hydrophilic element while utilizing the softness of the elastic element, and to provide the most
popular diaphragm as a soft dome speaker. became. In addition, this groove is also effective as a
general speaker diaphragm. ???
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