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Patent application (5) 1 Title of invention (2 others) 3 Patent applicant address Osaka Prefecture
Kadoma city Ogata Kamon 1 address 6 address name (582) Representative of Matsushita Electric
Industrial Co., Ltd. Shoji Matsushita 4 agent 〒 571 address Osaka Prefecture Makoto Ichiban
Kamon No. 1006 [Phase] Japan Patent Office Open Patent Gazette ■ Japanese Patent
Application Laid-Open No. 4g-4i-688 Specification 1, Title of Invention 1, Title of Invention
Magneto-electric conversion element.
2 Inventor
3. Detailed Description of the Invention The present invention is constructed by bonding a strain
material and a piezoelectric material with an adhesive, and the magnetic ti also has a very high
sense of electric nobleness, that is, it is very easy to sense the magnetic field. The present
invention relates to a solid element that can be converted to Conventionally, as a magnetosensitive element for detecting magnetic field strength by converting a magnetic field by voltage
or current Kg, a magnetoresistance element utilizing a change in resistance due to a magnetic
field, and one using the Hall effect of a semiconductor Hall elements etc. are known. The
magnetic field of these conventional elements is voltage rcf! Sensitivity when replacing?
′i05∼6.0m. V / Elsde, as low as strange. I could not take out a large voltage. In
addition, it should be used with DC current always flowing, because the change of resistance
against 1 g of temperature is large # i [! However, there were disadvantages such as being
uneasy and not suitable for use at high temperature and having a complicated structure. 'The
present invention eliminates such a conventional defect and provides a device capable of
generating a large voltage over a magnetic field by combining a magnetostrictive material and a
piezoelectric material and capable of converting #f VC even with a simple configuration. It is
something to try. Hereinafter, one structural example of the S-day electrical conversion element
of the present invention will be described with reference to the drawings. The drawing shows one
structural example of the magneto-electric transducer of the present invention, and in the
drawing, the magnetostrictive material () and the piezoelectric material (2) are bonded together
from the stick j13) K. Electrodes (4), (5) and reeds @ (61, (7) are attached to the piezoelectric
material (2). The principle that this element operates as a metal electrode conversion element is
as follows. is there. First, when the external boundary crosses the magnetostrictive material 11),
the magnetostrictive material 111 $ 1 causes a dimensional change, that is, distortion, due to the
magnetostrictive effect. This strain is transmitted to the piezoelectric material 12) through the
adhesive {3}. EndPage: 1 The piezoelectric material (2) generates a voltage between the
electrodes (4) and (5) by the piezoelectric effect. Then, the voltage can be taken out by the lead
wire 461 (7). An example of the present invention will now be described. As a magnetostrictive
material, a kell-steel based ferrite was used, and as a piezoelectric material, a polarized lead
titanate-zirconate based ceramic tP @ i was used. This magnetostrictive material also has a
magnetostriction constant d == − 6 × 10 wb / yt. The piezoelectric material is a piezoelectric
instruction h3. =−10X10V/mをもっている。 As an adhesive, an epoxy resin-based
adhesive was used. When a magnetic field of 20 elds was applied to the element, the voltage
appeared on the 1 sIB thick piezoelectric material was 6 v.
The sense of the magnetic field-voltage conversion at this time is fFi 600 mV / Erste. When this is
compared with the above-mentioned porcelain mI5 with the impression of an element, a Hall
element, etc., it looks as if it is extremely high sensitivity. さらに。 It is not necessary to pass a
direct current as in the conventional element, and the resistance of the piezoelectric material is
on top of this unnecessary direct current! Therefore, the element line of the present invention
can be used stably even at high temperatures. As described above, the Buddha et al. Electric
conversion element according to the present invention has a very good electric shock for
converting the field into a voltage I / c, does not need to apply a direct current to flow a direct
current, and is stable at # I @ It has many excellent features, such as its ability to be used, its
structure is solid with a wheel and wheel. The fOJjIIL ff light diagram in FIG. 31 is a sectional
view #J of the magnetoelectric transducer showing one embodiment N of the present invention. /
2 l-eS 壺 material, 12 J · fist · piezoelectric material, (3) · · · adhesive, (4i, (51 ... electrode, (6), (7) ·
· ·-lead wire. Name of agent Attorney Nakao Toshio Nakao has 1 person 6 Inventors other than
the above, and agent (1) inventor's pa address, 1 (2) agent EndPage: 2
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