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JPS5547061

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complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS5547061
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an essential part of
a conventional assembly structure, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a
longitudinal sectional view of an embodiment according to the present invention. The figure is a
vibration mode diagram of the voltage buzzer. 1 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · lid · · · · · · · · · · · · Lead wire, 11 · · · · · · · 1st case, 1-2 · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · holding column, 13 · · · · · · · · · · piezoelectric diaphragm, 14
· · · ... 2nd case, 15 ... ... opening.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a piezoelectric
buzzer for a toy which generates a fundamental sound and an overtone according to the
magnitude of a voltage to be applied. Conventionally, this type of device is 1: as shown in FIG. 1
and 2 in the nest, and the cylindrical receiver is in the axial direction of the inner peripheral
surface of the member 1. -A plurality of cylindrical bodies 2 are provided, and the circular
piezoelectric vibrating plate 3 is mounted on the cylindrical * 1a 2a of the cylindrical bodies, and
the piezoelectric vibrating plate 3 is formed in a disk shape in its upper surface direction. While
the holding member 4 made of polystyrene is placed, a large number of holes are held down by
the lid 5 with holes. Reference numeral 6.7 denotes a lead for supplying a voltage of the
piezoelectric imaging plate C. In the piezoelectric buzzer configured in this manner, the sound of
the piezoelectric diaphragm 3 moving by the voltage supplied from the power source resonates
with the cylindrical body of the receiving member W′′f member l, and the lifting and lowering
amount of the pressing member 4 It propagates to the outside of the device through a number of
holes 5 drilled in 5. However, in the above-mentioned conventional method, the force of the
presser due to the cover 5 sound effect via the presser member 4 is insufficient, the noise is
chattered based on the unstable piezoelectric diaphragm m11 11-, and the presser member 4 of
polyethylene is further used. In the present invention, the above-mentioned defect C; the above
problem C; was made-so generated sound C; there is no vibration 9 and the generated sound can
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not be absorbed by the device components Piezoelectric buzzer for providing vii. Below is one
implementation of the invention? 11 'IEIIi IC will be described. ! FIG. 13 shows the embodiment
of the present invention. In the figure, 11 is a cylindrical III case, and the crane 1 case, for
example, the axial direction 1: of the inner peripheral surface of the lower case is a plurality of
holding A pillar 12 is attached, and a piezoelectric diaphragm 13 having a pivoting node at its
circumferential surface is placed on the inclined notch surface 12a of the holding pillar formed
on the upper rim of the holding pillar, and the above-mentioned Imperial 1 case 11 If the tin 2
case is provided with an opening 15 for vibration sound plate extension at the center of the case
main body 14b while projecting to the internal cylinder 1461 and the case main body 141b, the
upper case 14 is a 1II 1 case 1 case 11 The pressure sensor is installed by pressing the
peripheral SV valve of the piezoelectric sliding plate 13 inward. Incidentally, the opening 15 may
be provided in the case 11 of 41. Since the above-mentioned two straight III are formed as
described above, the piezoelectric vibrating plate 13 vibrates in a predetermined Enraku mode
from the external energization 62 and this & The vignette is resonated in the space of the tune of
the case 1 of the chisel 1 and the case 14 of the chisel 2 and is propagated to the outside
through the opening 15 of the chisel 2 case 14. In this example, is the conventional one shown in
Figure 41? Like l +, since the pressing member 4v formed of the foamed polyethylene 12 is not
used b, vibration noise generated from the piezoelectric #RIIl is not absorbed by the device
constituent member, and the case 2 of the bag 2 is (1) The peripheral portion is held by the
support column of the case 11 and the piezoelectric member is held directly (without the
pressing member 4v of the conventional foam polystyrene shown in FIG. -Not 5i!
Chatter based on sound? It does not occur. From the above, according to the present invention,
the peripheral portion I: a piezoelectric vibrator having a nodal movement, a cylindrical 181 case
provided with a holding member for mounting the peripheral edge Wt of the piezoelectric
vibrator on the inner peripheral surface, and 1111. The number of holding members inscribed in
the case and holding the piezoelectric vibrator is one. Since the piezoelectric vibrator has a V%
length of 112 cases covered with the piezoelectric vibrator integrally, in the apparatus related to
the main field ll1C, tin shown in FIG. Shake mode is obtained, which makes it possible for the
t'ka's of the buildings to generate two concurrence with the blinking display. In addition, the
holding force of this device is stable, there is no crack on the piezoelectric vibrator's movement,
and there is no crack on the surface, and there is no absorption of natural sound by the
conventional method (JJ structure hX member. Such as one practical effect such as play.
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