JPS61129364U

JPS61129364U -

Info

Publication number: JPS61129364U
Application number: JP1338085U
Authority: JP
Priority date: 1985-01-31
Filing date: 1985-01-31
Publication date: 1986-08-13

Description

[Brief explanation of drawings]

第１図〜第５図は本考案の一実施例に係り、第
１図は完成された積層型圧電セラミツク素子を示
す斜視図、第２図は第１図を構成する途中一部を
破断した圧電セラミツク素子シート体を示す斜視
図、第３図は第２図イ部を矢印方向にみた拡大図
、第４図は第２図ロ部を矢印方向に見た拡大図、
第５図は製造途中の説明図、第６図は印加電圧―
変位を示す特性図、第７図は変位の応力分布図、
第８図は本考案の他の実施例に係る製造途中の説
明図、第９図および第１０図は本考案の実施例に
係る途中一部を破断した圧電セラミツク素子シー
ト体を示すもので第９図は斜視図、第１０図は第
９図を矢印方向からみた拡大図、第１１図は本考
案の他の実施例に係る圧電セラミツク素子シート
体を用いた製造途中の説明図、第１２図および第
１３図は従来の参考例に係り第１２図は完成され
た積層型圧電セラミツク素子を示す斜視図、第１
３図は第１２図の製造途中の説明図である。１…圧電用セラミツクグリーンシート、２，８
，１２，２０…細溝、３，９，１３…余白部、４
，１０，１４，１７…電極部、５，１１，１６，
１９…圧電セラミツク素子シート体、６，１８…
折曲部、７…外部電極、１５…余白部。 Figures 1 to 5 relate to one embodiment of the present invention; Figure 1 is a perspective view showing a completed multilayer piezoelectric ceramic element, and Figure 2 is a partially broken view of Figure 1. A perspective view showing a piezoelectric ceramic element sheet body, FIG. 3 is an enlarged view of section A in FIG. 2 viewed in the direction of the arrow, FIG. 4 is an enlarged view of section B in FIG.
Figure 5 is an explanatory diagram of the manufacturing process, and Figure 6 is the applied voltage.
Characteristic diagram showing displacement, Figure 7 is a stress distribution diagram of displacement,
FIG. 8 is an explanatory diagram of a piezoelectric ceramic element sheet body in the process of manufacturing according to another embodiment of the present invention, and FIGS. 9 and 10 show a partially broken piezoelectric ceramic element sheet body according to an embodiment of the present invention. 9 is a perspective view, FIG. 10 is an enlarged view of FIG. 9 viewed from the direction of the arrow, FIG. 11 is an explanatory view of a piezoelectric ceramic element sheet body in the middle of manufacturing according to another embodiment of the present invention, and FIG. 13 and 13 relate to conventional reference examples, and FIG. 12 is a perspective view showing a completed laminated piezoelectric ceramic element, and FIG.
FIG. 3 is an explanatory diagram of the process shown in FIG. 12 during manufacture. 1...Piezoelectric ceramic green sheet, 2,8
, 12, 20... Thin groove, 3, 9, 13... Margin, 4
, 10, 14, 17... electrode part, 5, 11, 16,
19... Piezoelectric ceramic element sheet body, 6, 18...
Bent part, 7...external electrode, 15...margin part.

Claims

[Claims for Utility Model Registration] (1) Thin grooves are provided alternately at equal intervals on both sides in the length direction, leaving the first thin groove from one end in the length direction as a margin, and leaving the other side as a margin. A piezoelectric ceramic element sheet in which a plurality of electrode portions are formed alternately in a staggered manner on both sides starting from the opposite surface where the first narrow groove is formed from the end and connected to the narrow grooves excluding the first narrow groove from one end in the length direction. Using a body, the piezoelectric ceramic element sheet body is folded in a zigzag manner and stacked and integrated so that the thin groove is used as the bending part and the surface that becomes the first thin groove from the margin and the other end becomes the outer surface. A multilayer piezoelectric ceramic element. (2) The laminated piezoelectric ceramic element according to claim (1) of the utility model registration, characterized in that a blank space is provided at both widthwise ends of the piezoelectric ceramic element sheet body where the electrode portion is formed. (3) The laminated piezoelectric ceramic element according to claim 1 or 2, wherein the outer surface of the bent portion of the electrode portion serves as an external electrode. (4) The laminated piezoelectric ceramic according to any one of claims (1) to (3) of the claims for utility model registration, characterized in that only the portion located on the outer surface of the bent portion of the electrode portion is thickened. element.