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DESCRIPTION JPS62210000

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DESCRIPTION JPS62210000
[0001]
(A) Field of the Invention The present invention relates to, for example, an AE sensor that detects
an acoustic emission (acoustic 0 m1 ssion) signal, and a vibrator that is used as an ultrasonic
pregnancy body. (B) Background of the Invention Conventionally, as a vibrator of the abovementioned example, there is, for example, a W1 # J child having a structure as shown in FIG.
That is, flat cylindrical semiconductive barium titanate sintered body so-called BaTiO3 ceramic
piezoelectric element 51 on opposite and opposite sides of electrode element 11! For example, in
order to print the I52.53 by means of the middle of the screen and connect the lead wire 54 ░
55 to the two electrode films 52.53, one of the electrode films 53 is attached to the outside of the
pressure jdi cord 51 described above. The vibrator is used as a lead electrode 11153a for lead
wire 55 connection by drawing out a. The above-described vibrator is disposed on a diaphragm
56 made of alumina (A1203), for example, as shown in the figure, and converts vibration energy
input from the diaphragm 56 into electric energy. The vibrator has the following problems. That
is, when forming the front) electrode film 53 and the lead electrode film 53a by screen printing
means for moving the squeegee and applying the electrocardiogram paste, the formation
surfaces of the respective electrode films 53.538 are mutually In addition, the movement
direction of the squeegee is two directions because it is a direction orthogonal to the above, and
not only two steps are required to form the electrode film 53.538, but the above-mentioned
electrode film 53 also has a perpendicular boundary with the lead electrode film 53a. There is a
problem that a break easily occurs in the portion 53b. The object of the present invention is to
provide an oscillator which can form an electrode film on one side of an element and a lead '7P1
electrode film in one step and is resistant to disconnection between the both electrode crotch .
(D) Summary of the Invention In the present invention, a lead electric film forming surface
obtained by cutting the boundary between both surfaces is formed between one surface of the
element and the side surface adjacent to the one surface, and the above one surface and the lead
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electrode film A vibrator having an integral electrode film formed simultaneously with the
formation surface is characterized by J. (E) Effects of the Invention According to the present
invention, the above-described lead electrode film-formed surface obtained by cutting the
boundary between one surface and the side surface of the element is formed, for example, the
squeegee is moved to apply the conductive paste. When forming the above-mentioned electrode
film and lead electrode film by means of screen printing, it is possible to simultaneously form
both electrode films by moving the squeegee in one direction, and as a result, the electrode film
on one side of the element is removed. There is an effect that it is possible to form a heavy
charge film in one step.
In addition, since the boundary between the element surface and the adjacent side surface is cut
in, for example, an inclined straight or arc, the opening angle between the electrode film and the
lead electrode film is set to an obtuse angle, or the electrode film And the lead electrode film can
be continued in an arc shape, and as a result, there is an effect that disconnection between the
above-mentioned two electrode crotch is less likely to occur. (F) Embodiments of the Invention
An embodiment of the present invention will be described in detail with reference to the
drawings. The drawing shows a vibrator, and in FIG. 1 and FIG. 2, this vibrator 1 is a flat
cylindrical semiconductive barium titanate sintered body so-called BaTiO3 ceramic so-called
BaTiO3 ceramic oppositely facing front and back sides. Form an electrode film 3.4. In addition,
an angled boundary portion between both surfaces 2a and 2b is inclined between one surface,
i.e., the back surface 2a on the side facing the diaphragm of the piezoelectric element 2 described
above, ie, the back surface 2a, and the outer surface 2b adjacent to the back surface 2a. The lead
electrode film forming surface 2C is formed by cutting in a straight line. The electrode film 3 and
the lead electrode film 5 are integrally and continuously formed on the surface 2a and the lead
electrode film formation surface 2C described above. Here, each electrode film 3.5 described
above is formed as follows. That is, as shown in FIGS. 3 and 4, the vibrator having the electrode
film 4 printed on the surface 2d of the piezoelectric element 2 on which the lead Ti electrode film
forming surface 2c has been previously formed by cutting The back surface 2a of the
piezoelectric element 2 is directed upward, and the 4 ffi paste 9 is placed on the top surface of
the screen mask 8 disposed on the back surface 2a, and the squeegee 10 moves on the screen
mask 8 described above. The conductive base 1-9 is moved from the predetermined opening of
the screen mask 8 by moving the squeegee 10 in one direction from the lead electrode film
formation surface 2C toward the back surface 2a as shown by the arrow. The lead electrode film
5 and the electrode film 3 are integrally and continuously formed on the both surfaces 2C and 2a
by coating on the film forming surface 2C and the back surface 2a. As described above, since the
above-described lead electrode film-formed surface 2G is formed by cutting the boundary
between the back surface 2a and the side surface 2b of the pressure Ti element 2, the squeegee
10 is moved to apply the 13-electric paste 9 The above-mentioned electrode II! When forming
the lead 3 and the lead 'F1 pole film 5, these two electrodes 1113.5 can be simultaneously
formed by the movement of the squeegee 10 in one direction. As a result, the above-mentioned
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electrode film 3 and the lead electrode are formed. There is an effect that the film 5 can be
formed in one step. In addition, since the boundary between the back surface 2a of the
piezoelectric element 2 and the side surface 2b adjacent to the back surface 2aC is cut in an
inclined straight line, the open angle between the electrode film 3 and the lead electrode film 5 is
obtuse. It is possible to set, and as a result, there is an effect that disconnection hardly occurs in
both electrode films 3 and 5 described above.
J3, the above-mentioned lead electrode film formation surface 2c cuts the boundary between the
back l1rI2a of the piezoelectric element 2 and the side ridge 2b adjacent to the back surface 2a
in a circular arc shape, and the electrode film 3 and the lead electrode film 5 Can be continuously
formed in an arc shape, and even in such a configuration, substantially the same operation and
effect as the illustrated embodiment can be obtained. In correspondence with the configuration
of the present invention and the above-described embodiment, the element of the present
invention corresponds to the piezoelectric element 2 of the embodiment, and similarly, one side
of the element corresponds to the back surface 2a of the piezoelectric element 2 Although the
formed integral electrode film corresponds to the electrode 193 and the lead electrode film 5, the
present invention is not limited to only the configuration of the above-described embodiment. For
example, as the piezoelectric element 2, it is needless to say that other ceramics of PZT type may
be used instead of BaTiO3 ceramics.
[0002]
Brief description of the drawings
[0003]
The drawings show an embodiment of the present invention, FIG. 1 is a perspective view of a
vibrator, FIG. 2 is a cross-sectional view of a picker, FIG. 3 is an explanatory view of an electrode
film forming step, and FIG. !
FIG. 5 is an explanatory view of a crotch forming step, and FIG. 5 is a cross-sectional view
showing a conventional vibrator. DESCRIPTION OF SYMBOLS 1
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии By the lead
electrode machine formation surface 3.4 ии. Fig. 1 Cross-sectional view of the 2nd view of the
figure of the movement of the drawing artist 3 2t) 2C 3 Fig. 2 ... Roundabout @ ? ? 2a иии! Face
Figure 4, Figure 19 M 'M' description of the cap a Figure 5 Figure 5 conventional peristaltic bar
and show provisional view ?
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