close

Вход

Забыли?

вход по аккаунту

?

JPS61239799

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS61239799
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
piezoelectric buzzer for use in an acoustic generator such as a gas alarm, a calculator, a home
appliance and the like. Conventionally, a piezoelectric buzzer of this type is manufactured by
bonding a piezoelectric ceramic element having a structure as shown in FIG. 3 to a metal
diaphragm with an adhesive. That is, a powder of silver oxide and a powder of lead borate glass
are mixed with the piezoelectric ceramic fired product 1, '11. The paste which melt | dissolved in
solvent, resin, and fats and oils is printed on both surfaces, and the electrode 2 formed by baking
60o-ao 'c after drying is formed. Then, one of the electrodes is fixed to the metal diaphragm 4 via
the adhesive 3. Problems to be solved by the invention However, in such a structure, it is
necessary to form an electrode using expensive silver, and at the same time, an adhesive, which is
an insulator, is used for bonding to a metal diaphragm. When the pressure applied at the time is
insufficient or the drying condition of the adhesive is insufficient, there is a problem that the
electrical connection between the electrode and the metal diaphragm can not be made
sufficiently. Therefore, the present invention provides a low-cost piezoelectric buzzer by using a
silver electrode mixed with nickel powder. Means for Solving the Problems In order to solve the
problems, the present invention has a metal diaphragm and an electromagnetic element bonded
to the metal diaphragm with an adhesive, and the piezoelectric ceramic element In the
piezoelectric buzzer, a silver electrode containing nickel powder is provided on the bonding
surface side electrode with the metal diaphragm. In this way, by containing nickel powder in the
silver electrode, the nickel powder is replaced with silver, the roughness of the electrode surface
is increased, the adhesion is strengthened, and the stabilization of the electrical connection is
improved. EXAMPLE Hereinafter, an example of the present invention will be described with
reference to FIG. In FIG. 1, 1 is a piezoelectric ceramic sintered product, and has a silver electrode
2B containing nickel powder on the bonding surface side with the metal diaphragm 4, and the
04-05-2019
1
electrode 2A on the opposite side becomes a silver electrode that can be soldered ing. Thus, in
the present embodiment, a silver electrode containing nickel powder is applied to the bonding
surface side electrode 2B of the piezoelectric ceramic element 1 with the metal diaphragm 4. 1
Therefore, as shown in FIG. 2 (-), the conventional metal component has a large particle diameter
as shown in the embodiment of the present invention shown in FIG. The electrode 2B in which
nickel powder (3 to 30 ?m) is partially replaced with silver powder has a surface roughness of 2
to 6 times. For this reason, the roughness of the electrode surface 2B is increased, the effect of
throwing the adhesive 30 with the metal diaphragm 4 is promoted, the adhesion is strengthened,
and the stabilization of the electrical connection can be improved, and at the same time the low
cost piezoelectric It can provide a buzzer.
Effects of the Invention As described above, according to the present invention, the electrode
material can be reduced in price and, at the same time, the electrode surface roughness is
increased to strengthen the adhesion between the piezoelectric ceramic element and the metal
diaphragm. It has high industrial value.
[0002]
Brief description of the drawings
[0003]
Fig. 1 (-) is a plan view showing a piezoelectric buzzer according to an embodiment of the present
invention, Fig. 1 is a sectional view thereof, Fig. 2 (,) is an enlarged view of a sectional view of a
piezoelectric buzzer according to a conventional example, FIG. 9 (A) is an enlarged view of a
cross section of a piezoelectric buzzer according to an embodiment of the present invention, FIG.
3 (-) is a plan view showing a piezoelectric buzzer on the slave side, and FIG.
1 ииииии Piezoelectric ceramic sintered product, 2A ииииииии Silver electrode, 2B ииииии Nickel containing
silver electrode, 3 иииииии Adhesive agent, 4 ииии ииииииии Metal diaphragm. 1 1 r I J t ?) Fig. 3 1 ... 1-1
stop ? floor 1) / 2A
04-05-2019
2
Документ
Категория
Без категории
Просмотров
0
Размер файла
9 Кб
Теги
jps61239799
1/--страниц
Пожаловаться на содержимое документа