JPH0475425U

JPH0475425U -

Info

Publication number: JPH0475425U
Application number: JP11977990U
Authority: JP
Priority date: 1990-11-14
Filing date: 1990-11-14
Publication date: 1992-07-01

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例にかかる圧電部品
を示す斜視図、第２図は該圧電部品の封止蓋を示
す平面図、第３図及び第４図はそれぞれ該封止蓋
の側面図及び底面図、第５図は従来の圧電部品を
示す斜視図、第６図はその分解斜視図、第７図は
従来の圧電部品の封止蓋に容量が形成された状態
を模式的に示す断面図である。図中、同一符号は
同一または相当部分を示す。１……圧電素子、２……圧電基板、３ａ，３ｂ
……電極（振動電極）、６……ケース、７……封
止蓋、１０ａ，１０ｂ……外部電極、１１……ア
ース電極、１３……センタ電極、１６ａ，１６ｂ
……対向電極。 FIG. 1 is a perspective view showing a piezoelectric component according to an embodiment of the invention, FIG. 2 is a plan view showing a sealing lid of the piezoelectric component, and FIGS. 3 and 4 are side views of the sealing lid, respectively. Fig. 5 is a perspective view showing a conventional piezoelectric component, Fig. 6 is an exploded perspective view thereof, and Fig. 7 schematically shows a state in which a capacitance is formed in the sealing lid of a conventional piezoelectric component. FIG. In the figures, the same reference numerals indicate the same or corresponding parts. 1...Piezoelectric element, 2...Piezoelectric substrate, 3a, 3b
... Electrode (vibration electrode), 6 ... Case, 7 ... Sealing lid, 10a, 10b ... External electrode, 11 ... Earth electrode, 13 ... Center electrode, 16a, 16b
...Counter electrode.

Claims

[Claims for Utility Model Registration] A piezoelectric element having electrodes provided on a piezoelectric substrate, a case that houses the piezoelectric element so that it can vibrate, a sealing lid that seals the case, and a sealing lid that seals the case at both ends of the outer surface of the case. an external electrode formed and electrically connected to an electrode provided on the piezoelectric element; a ground electrode formed on the outer surface of the case between the external electrodes; a center electrode connected to the ground electrode; a center electrode formed from both ends of the back surface of the sealing lid toward the center and connected to the external electrode;
A piezoelectric component comprising a counter electrode that faces the center electrode at least partially through the sealing lid.