JPH01134996U

JPH01134996U -

Info

Publication number: JPH01134996U
Application number: JP3001288U
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
用素子を示す上面図、第２図は第１図の断面図、
第３図は第１図の底面図、第４図は従来の超音波
モータ用素子を示す上面図、第５図は第４図の断
面図、第６図は第４図の底面図である。１，１ａ……圧電素子、２……分極電極、２ａ
……全面電極、３……薄金属板。 FIG. 1 is a top view showing an ultrasonic motor element according to an embodiment of the present invention, FIG. 2 is a sectional view of FIG. 1,
Fig. 3 is a bottom view of Fig. 1, Fig. 4 is a top view showing a conventional ultrasonic motor element, Fig. 5 is a sectional view of Fig. 4, and Fig. 6 is a bottom view of Fig. 4. . 1, 1a...Piezoelectric element, 2...Polarized electrode, 2a
...Full surface electrode, 3...Thin metal plate.

Claims

[Scope of utility model registration request]

1 with at least alternating polarization directions on one side
A ring-shaped piezoelectric vibrator has electrodes divided into paired areas and a full-surface electrode on the other side.
An element for an ultrasonic motor, wherein a ring-shaped thin metal plate serving as an intermediate electrode is sandwiched and bonded together, and the outer peripheral part of the thin metal plate is configured such that at least a part of the outer peripheral part of the thin metal plate protrudes outward from the outer peripheral part of a piezoelectric element.