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JPS56167397

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DESCRIPTION JPS56167397
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional
piezoelectric buzzer sounding body, FIG. 2 is a cross-sectional view showing an embodiment of
the piezoelectric buzzer sounding body according to the present invention, and FIG. It is an
acoustic characteristic comparison figure of and a conventional product. 6 · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · acoustic box .
DETAILED DESCRIPTION OF THE INVENTION It is an object of the present invention to provide a
piezoelectric buzzer sounding body having a simple structure and good acoustic characteristics.
Generally, as shown in FIG. 1, a piezoelectric buzzer sounding body has a structure in which a
pressure iter porcelain element 2 is bonded to a metal diaphragm 1 with an adhesive or the like,
and a riverside with an adhesive 4. Since it has a structure to be identified and housed in a metal
or synthetic resin resonance box s, as shown in the characteristic B of FIG. 3, there is a drawback
no sharp peaks and valleys are generated in the same wave number characteristic of sound
pressure. It had 4J9-72. The present invention was devised to eliminate such drawbacks, and one
embodiment of the present invention will be described with reference to FIG. As shown in FIG. 2,
the piezoelectric buzzer sound producing body according to the present invention has a structure
in which a piezoelectric ceramic element 7 is bonded 9 with an adhesive or the like to the inner
bottom surface of a synthetic resin or whole area case 6 processed into a pot lid shape. The
piezoelectric buzzer element 8 has a structure in which the periphery thereof is adhered and
accommodated to a gold-made or synthetic resin resonance box 10 with a resilient adhesive 9.
The sound pressure characteristics of the piezoelectric buzzer sounding body according to the
present invention are shown in FIG. 3, and those of the conventional example are indicated by 8
as described above. Thus, the piezoelectric buzzer sounding body of the present invention does
not have sharp peaks and valleys in the frequency characteristic of sound pressure as in the prior
art, and stable sound 11141! Have the advantage of being easy to manufacture due to its simple
structure and 2)
04-05-2019
1
04-05-2019
2
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