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JPS53109434

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complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS53109434
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the basic
configuration of a piezoelectric microphone according to the present invention, FIG. 2 is an
exploded perspective view of the main parts in one embodiment of the present invention, and
FIG. 4 is a perspective view of the case of the piezoelectric microphone of the present invention,
FIG. 5 is a perspective view of a completed state of the piezoelectric microphone of the present
invention, FIG. 6 is the same cross sectional view, and FIG. FIG. 8 is an exploded perspective view
of the second embodiment of the present invention, FIG. 9 is an enlarged sectional view of the
third embodiment of the present invention, and FIG. 10 is an exploded perspective view of the
second embodiment of the present invention. FIG. 11 is an enlarged sectional view of an essential
part of the fourth embodiment of the present invention, FIG. 12 is an exploded perspective view
of the same, and FIG. 13 is a sectional view of the fifth embodiment of the present invention. 1.1
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Hole, 7 7 7 'и и и и и и и и и и Back plate, 9, 9 и и и и и и Column body, 10, 10' и и и и и и и и и и и и 11, 11 'и и и и и и и и
и и terminal 12
иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии иии
17 иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Element, 21 иииииииии Printed board. FIG. 7 1214 '81'.
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DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a piezoelectric
microphone in which a polymer pressured film is vibrated. FIG. 1 shows the basic configuration
of the piezoelectric microphone of the present invention. In FIG. 1, 1, 1 'is a curved metal dust
frame-2, 2' is a polymer wedge film provided with a single pole at both j, so that a molecular
pressure film 2, 2 'or so Each of the frames 1, 1 'is coated in a tensioned state so as to have fd
according to the curvature of the frame. In the state where the polymer film, the piezoelectric
film 2, 2 'is adhered 3 to the frame 1, 1', one electrode of the polymer pressure film 2, 2 'and the
frame 1, 1' are electrically conducted. There is. 3 is f-1 fcl J-de, which is connected to the other @
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pole of the above-mentioned simple pressure film 2, 2 '2' and 4, 4 'FJ. As described above, the
piezoelectric microphone according to the present invention has two microphone units y) A and
A 'f facing each other formed of the frame 1.1' and the piezoelectric film 2.2 'and electrically
connected. Is connected in the same row, -C, which can improve the sensitivity, and also has the
advantage that no external noise is generated due to the external resistance. Third L! ! J is an
inferior ? indication C in which the piezoelectric microphone in ? in one practical example of
this consideration is disassembled. In FIG. 3, A and A 'are respectively a microphone unit shown
in FIG. 1 and f'I is a metal cylinder wheel 5 having a square cylindrical shape. The two openings
of this cylinder 5 are based on a back plate 7.7 'having holes 6, 6', and are h-C. Furthermore, the
cavity box B is constituted by the il: 81 storage 6 and -Ji 7 + 7 ?, and the sound absorbing
material 8 is accommodated in the key box Bonox B. The direction of the back plate 7, 7 'side end
of the cavity box 1 is a curved surface having substantially the same curvature as that of the
frames 1, 1' of the microphone units A, A '. In FIG. 2, 9.9 'is a semi-columnar body composed of a
recess and an insulator having a recess 10 and a recess 10 communicating with the recess, and
the half-columns 9, 9' have terminals 11.11. 'Is being planted. Cavity box shown in FIG. 2] When
the half pillars 9, 9 'i are combined while being held down by the II l microphones Uninot A, A',
the cavity box B and the microphone inside the half rods 9, 9 ' The units A and A 'are stored with
the microphone units A and A' waiting for the cavity box bt to fall (Fig. 3-in this state, the tip of
one of the terminals 11.11 'is separated by half, At the edge of the window 10.10 'of the column
9, 9', it contacts with the electrode on the outside of the polymer pressure '2 film 2, 2', which
leads to an electrical conduction, terminal 11 ░) 11 Two microphone units,) A and A'5, are
connected to each other between 1 and 1 '.
That is, in FIG. 2 lc, the cylinder 5 or the first section li'c has the role of ?3 and the terminal
11.11 'has the role of the lead -4, 4' in the first section. It is A year 4 indicates a cylindrical case
12 closed at one end opening, and a number of sound holes 13 are formed on the surface of the
case 12. Insert the half pillar j4C 9, 9 'shown in nest 3 into insert 12 into case 12 shown in FIG.
The microphone is a light source (FIG. 5). No. 612! The cross section of the light state in the
example of Jlj'i and Mc 'is reduced. Fig. 7 South, Fig. 8 shows the flow of the pond of the pond, "U
C", and in the case of an irregular row, the microphone units A and A 'and the same one as the
frame-shaped conductive resin etc. The pakkin material 14 intervenes, and the force at the time
of caulking the opening of the case 12 is relieved by the upper pakkin material 16 and at the
same time, the air threadability is obtained. F) 9 'A-10 is A third embodiment of the present
invention is shown in FIG. 6. In this embodiment, a terminal 16 is used in which a frame portion
15 is integrally formed at the same time as using a conductive patz material 14 as in FIG. 7 and
FIG. The frame portion 15 of the terminal 16 is inserted into the window 10 of the columnar
body 9 using the Reference numeral 17 denotes a notch formed in the columnar body 9, and
when the terminal 16 is inserted, the terminal portion of the terminal 16 enters the notch 1-17.
FIG. 11 and FIG. 12 show a fourth embodiment of the present invention. In the example shown in
FIG. 11C, one terminal 18 is integrally formed on the frame 1 of the microphone unit. FIG. 13
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shows a modification of the embodiment shown in FIG. 9 and factor 1 o. In the non-embodiment,
one end of each of the pillars 9 and 9 ? is extended to form one cylindrical space portion 19 transistor, The printed board 21 is disposed so that the cylindrical space portion 19F4 is formed
by the disc-shaped printed board 21 to which the element 2o such as FhT is soldered. In this
case, the tip end of the terminal 16 is inserted into the hole formed in the printing head plate 21
and soldered to the conductor portion of the printed board 21. The piezoelectric microphone
according to the present invention has the above-described structure, and the two microphone
units have the conductive hanok cayhty. The body is combined, and it can be assembled simply
by inserting it into the case with four, and it has good handling and is suitable for mass
production.
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