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DESCRIPTION JPS53148630

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DESCRIPTION JPS53148630
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a first
embodiment of the present invention, FIG. 2 is a cross-sectional view showing a second
embodiment, and FIG. 3 is a cross-sectional view showing a third embodiment. It is. 1, 1 ', 1 ".....
housing, 1a ..... frame part, 3, 10 ..... diaphragm, 5.5" ..... sound pressure Loaded wall surface, 6 .....
Damping material. .
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sound 41
conversion device such as a loudspeaker, a speaker, a microphone and the like. Conventionally,
as a damping material stretched in a sound path hole of an acoustic conversion device such as a
headphone, a speaker, and a microphone, frequency characteristics are managed to protect from
external mechanical force to the diaphragm, for example, external force applied by hand. This
synthetic resin or metal mesh is used on the wall surface on which sound pressure acts in the
housing or the frame, and a sound speed hole is provided. As a means to fix it to the frame, the
adhesive is used to bond it, so if the bonded part is unrealistic or insufficient, the damping
material vibrates, causing a malfunction such as a flap, and The braking material may peel off
and the braking effect may be lost. Furthermore, when the adhesive comes into contact with the
effective area portion of the mesh as the braking material, there is a change in the braking force,
which causes the variation of the characteristics. In the present invention, the housing is molded
with a synthetic resin plastic, and the damping material is molded in the hole of the sound path
provided on the wall where the sound pressure acts by the vibration of the diaphragm. By
inserting and stretching together with molding, the number of assembly steps can be reduced to
achieve improved workability and control! An object of the present invention is to provide an
acoustic transducer capable of achieving stabilization of klIlt. In the following, the case where
one embodiment of the present invention is applied to SUV cam will be described according to
FIG. l!! A housing molded with a body, 2 a speaker attached to the housing 1, 3 a diaphragm
of the speaker 2, 4 a housing created to release part of the silent pressure by vibration of the
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diaphragm 3 The hole 6 is a damping material which is busy inserted with the molding of the
housing 1 and molded in the sound passage 4. The damping material 6 is, for example, synthetic
resin or metal. Made mesh is used. T is an air chamber provided in the housing 1 and this air
chamber 7 communicates with the outside. Reference numeral 8 denotes a pad laid on the 7 runs
9 9 of the housing 1. Since one embodiment of the present invention is constructed as described
above, the damping material 6, such as metal or l / '1, is made of an adhesive in the sound speed
holes of all synthetic resin mesh housings as in such conventional products. Instead of laying
using plastic resin r (it is inserted in sound velocity hole 4 together with molding of housing 1
and molding, it is possible to achieve improvement of work by reducing the number of
assembling steps. .
In addition, 1 and 'fixed of the braking material 6 is structurally rigid, eliminating the cause of
operation failure such as billiness, etc., and the braking material 6 is not peeled off and the
braking effect is not lost, and stabilization of the braking amount is achieved. Further, since the
mesh as the damping member 6 is stretched in the sound path hole 4, the appearance is excellent
and the design effect is obtained. Next, the second embodiment of the present invention will be
described according to FIG. 2 when applied to the loudspeaker 1 according to FIG. 2. The
loudspeaker 2 'is fixed to the frame portion 1a of the housing 1'. Fix the damping material 6 such
as metal or synthetic resin mesh on the wall surface where the sound pressure acts, that is, the
sound path hole 4 provided with the frame portion 1aK together with molding 1 '. # 1 has the
same configuration as that of the above embodiment-it has the same operation and effect. FIG. 3
shows the third embodiment of the present invention when the microphone BK is applied. In this
embodiment, the sound pressure is increased by the vibration of the diaphragm 1 o in the
housing 1 ′ molded by a synthetic resin plastic. A braking material Bft is inserted and stretched
in the sound path hole 4 provided in the acting wall surface 5 ′ ′ by the same means as the
above-mentioned embodiments, 11 is a yoke, and 12 is a magnet. Also in the present
embodiment, the same operation and effects as those of the respective embodiments described
above are obtained. As described above, the present invention can achieve an improvement in
work by reducing the number of assembling steps for fixing synthetic synthetic resin or metal
mesh or the like as a damping material to a sound path hole. It becomes robust) Blip, etc.
Malfunctions are eliminated and braking is stabilized, P! There are design effects such as good
appearance on the mantle.
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