JPH0479456U

JPH0479456U -

Info

Publication number: JPH0479456U
Application number: JP1990124063U
Authority: JP
Priority date: 1990-11-26
Filing date: 1990-11-26
Publication date: 1992-07-10

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の圧電素子の表面図
、第２図はこの素子の裏面図、第３図はこの素子
の側面図、第４図はこの素子の有効部分を示す平
面図、第５図は従来の圧電素子の表面図、第６図
はこの素子の裏面図、第７図はこの素子の側面図
、第８図はこの素子の有効部分を示す平面図であ
る。１０……圧電素子、１２……磁器基板、１２ａ
，１２ｂ……磁器基板の両面、１３，１４……電
極、１５……有効部分、１６ａ……凹部（基準部
）。 Figure 1 is a front view of a piezoelectric element according to an embodiment of the present invention, Figure 2 is a back view of this element, Figure 3 is a side view of this element, and Figure 4 is a plan view showing the effective part of this element. , FIG. 5 is a front view of a conventional piezoelectric element, FIG. 6 is a back view of this element, FIG. 7 is a side view of this element, and FIG. 8 is a plan view showing an effective part of this element. 10...piezoelectric element, 12...porcelain substrate, 12a
, 12b... Both sides of the ceramic substrate, 13, 14... Electrodes, 15... Effective portion, 16a... Recessed portion (reference portion).

Claims

[Claims for Utility Model Registration] (1) A ceramic substrate comprising a ceramic substrate and a plurality of electrode portions formed on both surfaces of the substrate, and an effective portion of the ceramic substrate between the electrodes on both surfaces facing each other is subjected to polarization treatment. A piezoelectric element used in a piezoelectric device, characterized in that a reference portion for positioning when forming the electrode portion is provided on a portion of the ceramic substrate. (2) The piezoelectric element according to claim 1, wherein the ceramic substrate has an annular shape and is applied to an ultrasonic motor.