JPH01134995U

JPH01134995U -

Info

Publication number: JPH01134995U
Application number: JP3000988U
Authority: JP
Priority date: 1988-03-07
Filing date: 1988-03-07
Publication date: 1989-09-14

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例による超音波モータ
用素子に用いる圧電素子の上面図、第２図は第１
図の全面電極部を示す底面図、第３図は同超音波
モータ用素子の断面図、第４図は同底面図、第５
図は従来の超音波モータ用素子に用いる圧電素子
の上面図、第６図は第５図の全面電極部を示す底
面図、第７図は同超音波モータ用素子の断面図、
第８図は同底面図である。１，３…圧電素子、２，２ａ，４ａ…電極、２
ｂ…接続電極、３ａ…切欠部、４ｂ…リード線。 FIG. 1 is a top view of a piezoelectric element used in an ultrasonic motor element according to an embodiment of the present invention, and FIG.
Fig. 3 is a sectional view of the ultrasonic motor element, Fig. 4 is a bottom view of the ultrasonic motor element, Fig.
The figure is a top view of a piezoelectric element used in a conventional ultrasonic motor element, FIG. 6 is a bottom view showing the entire surface electrode part of FIG. 5, and FIG. 7 is a cross-sectional view of the same ultrasonic motor element.
FIG. 8 is a bottom view of the same. 1, 3... Piezoelectric element, 2, 2a, 4a... Electrode, 2
b... Connection electrode, 3a... Notch, 4b... Lead wire.

Claims

[Scope of utility model registration request]

At least one layer on one side with polarization directions reversed to each other
A ring-shaped two-piece piezoelectric element has electrodes divided into paired areas and a full-surface electrode on the other side.
The whole electrode surface and the divided electrode surface are bonded together so that they are in contact with each other, and a notch is provided in the piezoelectric element on which the whole electrode surface of the piezoelectric element is located on the outside, and corresponds to the notch in the whole surface electric part of the other piezoelectric element. An element for an ultrasonic motor, which is provided with a connecting electrode for connecting a lead wire, one part of which protrudes outward.