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JPS5423716

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DESCRIPTION JPS5423716
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a microphone
element of a conventional piezoelectric microphone, FIG. 2 is a perspective view of the same
microphone element, FIG. 3 is a perspective view of a conventional piezoelectric microphone, FIG.
The figure is an exploded perspective view of the microphone element of the piezoelectric
microphone in one embodiment of the present invention, FIG. 5 is a perspective view of the same
microphone element, and FIG. 6 is a support base 9Pr of the piezoelectric microphone in one
embodiment of the present invention. Fig. 7 is a perspective view of a piezoelectric microphone
using the same support, Fig. 8 is a perspective view of a support according to another
embodiment of the present invention, and Fig. 9 is a piezoelectric microphone using the same
support. FIG. 10 is a perspective view of still another embodiment of the present invention. 1 и и и и
и и и и и и и и и и и и Polymer piezoelectric film, 4 и и и и и и и и и и и и и и и и и и и и и и и и и support base 6, 6 'и и и
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
DETAILED DESCRIPTION OF THE INVENTION A non-inventive invention relates to a pressure%
type microphone using a polymeric piezoelectric film as a dynamic film. In a piezoelectric
microphone using a polymeric piezoelectric film, it is necessary to cut the single-tube molecular
piezoelectric film in a curved shape between the stretching directions. Sections 1 to 3 show the
structure of this type of conventional piezoelectric microphone. In FIG. 1, reference numeral 1
denotes a flat plate-like frame consisting of an elastic base plate, and an electrode is formed on
one side thereof. The second problem is a state in which the polymeric piezoelectric film 2 is in
contact with the flat frame 1, and the flat frame 1 is further formed on one side of the curved
frame 3 along the curvature of the flame 30 to make a child. 3 (Fig. 3). However, in the abovementioned conventional piezoelectric microphone, two frames of the flat frame 1 and the curved
frame 3 are required as frames, and the contact layering operation is performed in two steps, ie,
the polymer piezoelectric film 2 is adhered to the flat frame 1 Process and the process of
bonding the flat frame 1 to the curved frame 3 and it is necessary to have one work efficiency,
04-05-2019
1
and the adhesive layer becomes 8 ? larger, this capacity becomes an invalid capacity, and the
output voltage of the microphone There was a drawback that decreased. Non- <X eliminates the
above-mentioned conventional defects. Hereinafter, an embodiment of the power failure will be
described with reference to FIGS. 4 to 10. In FIG. 4, 1 is a polymer piezoelectric film having a
plate-like frame 2 made of a metal plate having a gourd injection of phosphor bronze or the like
on the inner surface of which an electrode is formed. The microphone element 4 shown on the
fifth surface is adhered to the second frame 1 of the second frame 1 and is taken apart. FIG. 6
shows the support 4 of the piezoelectric microphone of the present invention. On the upper
surface of the support 5, parallel non-slits 6.6 'are formed. The distance between Surin 6 and 6 'is
smaller than the width of the flat frame 10 shown in FIG. The frame 1 of the microphone element
4 shown in FIG. 6 is bent by its elastic force KVL, and both sides of the frame 10 are inserted into
the sleeves s and 6 'of the support 5 shown in FIG. It is completed as shown in the figure. FIG. 8
shows a support of another embodiment, and a groove 8 having a width smaller than the width
of the microphone 4 shown in FIG. 5 is formed on the upper surface of the support 7 and the
frame 10 has an elastic force. On the other hand, the microphone element 4 which has been bent
is inserted into the groove 8 to complete as shown in FIG.
FIG. 10 shows another embodiment of the present invention, in which projections 10.1? and
projections 11.11 'are provided in parallel on the upper surface of the support 9. The
microphone element 4 и is bent and dispersed between the projections 10.1? and 11.11 ?. The
slit spacing, the six groove widths, and the projection spacing in the above embodiments are
determined in consideration of the radius of curvature that gives the desired resonant frequency
of the microphone. Further, the bending direction of the microphone element is the stretching
direction of the polymer piezoelectric film 2. The present invention is an arrangement like a
master, and according to the uninvention, it has an advantage that a conventional folding frame
is unnecessary and the number of bonding steps can be reduced.
04-05-2019
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