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JPS55115198

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DESCRIPTION JPS55115198
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view of a conventional
piezoelectric ceramic vibrator, FIG. 2 is a top view of an embodiment of the piezoelectric ceramic
vibrator of the present invention, and FIG. 3 is a sectional side view of the same vibrator. , FIG.
4A. B and C are respectively a main view, a rear view and a side view of a piezoelectric ceramic
plate constituting the same vibrator, FIG. 5 is a top view of an insulating plate constituting the
same vibrator, and FIG. FIG. 7 is a top view of the insulating plate, and FIG. 7 is a perspective
view of a state in which the vibrator of the embodiment of the above-mentioned function is
housed in a case. 4 · · · Piezoelectric ceramic plate, 5, 6 · · · · · · · · · · · · · · · · · · · · · · · · · · · · return
electrode, 8 · · · · · insulating plate, 9, 10 · · · · · · Metal conductor layer, 11 · · · · · · · · · ·.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates mainly to a
piezoelectric ceramic vibrator using bending and taking motion used for a sound generator such
as a piezoelectric buzzer and a piezoelectric speaker, and the lead terminal can be easily pulled
out with a simple configuration. It is possible to provide an excellent piezoelectric magnetic
vibrator capable of: In general, when providing lead terminals in a piezoelectric ceramic vibrator,
lead wires 3 are soldered directly to electrodes 2 formed on both sides of the piezoelectric
ceramic plate 1 as shown in FIG. , Often lead terminals. By the way, in the case where the lead
wire 3 is directly soldered to the electrode 2 formed on the piezoelectric ceramic plate 1 as
described above to form a lead terminal, the electrode 2 itself is usually formed by baking tin,
silvering or the like. The lead wire 3 may fall off more easily than the electrode 2, which is not
very preferable. On the other hand, direct contact with the electrode 2 formed on the
piezoelectric ceramic plate 1, □, *, □ onion,. 1 □ alloy · This type is not preferable because it
has a problem that contact resistance becomes large and contact failure tends to occur. The
present invention is to eliminate the above-mentioned conventional drawbacks, and to provide an
excellent piezoelectric ceramic vibrator capable of providing lead terminals easily and reliably.
The piezoelectric ceramic vibrator of the present invention will be described with reference to
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the drawings of Example 7-. In the figure, 4 is a piezoelectric ceramic plate, 5 and 6 are
electrodes respectively formed on both surfaces of the piezoelectric ceramic plate 40, and 7 is
electrically formed on one surface of the piezoelectric ceramic plate 4 and formed on the other
surface. The connected folded electrode 8 is an insulating plate larger than the piezoelectric
ceramic plate 4, and 9 and 10 are the surfaces of the insulating plate 8 corresponding to the
electrode 5 formed on one surface of the piezoelectric ceramic plate 4 and the folded electrode 7.
It is a metal conductor layer formed on The piezoelectric ceramic plate 4 is adhered to the
surface of the insulating plate 8 by a thin conductive adhesive layer, and the electrode 5 and the
folded electrode 7 formed on one surface of the piezoelectric ceramic plate 4 are respectively the
insulating plate 8 Are electrically connected to the metal conductor layers 9, 1o formed on the
surface of In the above embodiment, on one surface of the piezoelectric ceramic plate 4, in
addition to the electrode 5, a folded electrode 7 electrically connected to the electrode 6 formed
on the other surface is simultaneously formed, and this surface is an insulating plate 8. A metal
conductor layer formed on the surface of the insulating plate 8 because it is stuck to the surface
8; −. 9. 10 is electrically connected to the electrode 6 and the return electrode 7. It is connected
in two ways and used as a lead terminal. Therefore, according to the above embodiment, the lead
terminal can be pulled out easily and surely.
In the embodiment, the metal conductor layers 9 and 10 formed on the surface of the insulating
plate 80 are formed so as not to protrude from the end face of the insulating plate 8, but as
shown in FIG. In this case, as shown in FIG. 7, when stored in the case 11, it is possible to project
the end of the metal conductor layer 9.10 directly from the case 11 directly, which is extremely
advantageous in practice. As described above, according to the piezoelectric ceramic vibrator of
the present invention, as is apparent from the embodiments, the lead terminal can be drawn out
very simply and reliably, which is extremely advantageous in practice.
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