JPH0370418U

JPH0370418U -

Info

Publication number: JPH0370418U
Application number: JP13083689U
Authority: JP
Priority date: 1989-11-09
Filing date: 1989-11-09
Publication date: 1991-07-15

Description

[Brief explanation of drawings]

第１図は、この考案の一実施例に係る複合型圧
電部品を示す横断面図である。第２図は、第１図
の複合型圧電部品の製造工程の一例を示すもので
あり、Ａは短冊状の圧電振動子の斜視図、Ｂは短
冊状のコンデンサの斜視図、Ｃは短冊状の本体部
の斜視図、Ｄは外装樹脂をモールドする前の斜視
図である。第３図は、従来の複合型圧電部品の一
例を示すものであり、Ａはその横断面図、Ｂは外
装樹脂を取り除いた正面図である。第４図は、第
１図および第３図の複合型圧電部品の等価回路図
である。１１……本体部、１２……圧電振動子（圧電素
子）、１２１……圧電基板、１２２，１２３……
電極、１３……コンデンサ、１３１……誘電体基
板、１３２〜１３４……電極、１４〜１６……端
子、１８……外装樹脂、１９……空洞部、２０，
２１……導電性樹脂、２３……導電性接合剤。 FIG. 1 is a cross-sectional view showing a composite piezoelectric component according to an embodiment of this invention. Fig. 2 shows an example of the manufacturing process of the composite piezoelectric component shown in Fig. 1, in which A is a perspective view of a rectangular piezoelectric vibrator, B is a perspective view of a rectangular capacitor, and C is a rectangular view of a capacitor. D is a perspective view of the main body before molding the exterior resin. FIG. 3 shows an example of a conventional composite piezoelectric component, in which A is a cross-sectional view thereof, and B is a front view with the exterior resin removed. FIG. 4 is an equivalent circuit diagram of the composite piezoelectric component of FIGS. 1 and 3. FIG. 11... Main body, 12... Piezoelectric vibrator (piezoelectric element), 121... Piezoelectric substrate, 122, 123...
Electrode, 13... Capacitor, 131... Dielectric substrate, 132-134... Electrode, 14-16... Terminal, 18... Exterior resin, 19... Cavity, 20,
21... Conductive resin, 23... Conductive bonding agent.

Claims

[Scope of utility model registration request]

a piezoelectric element in which electrodes are formed on both main surfaces of a piezoelectric substrate, facing each other near the center and folded back to near the end of the opposite main surface;
A capacitor consisting of two electrodes formed on one main surface of a dielectric substrate and one electrode formed on the other main surface, with the main surface side on which the two electrodes are formed facing the piezoelectric element. The vicinity of both ends of the main body, which is formed by bonding opposing electrode portions together using conductive resin, is held by first and second terminals, and these and the electrodes of the piezoelectric element are connected by intervening conductive resin. a third terminal is bonded to the electrode located outside the capacitor using a conductive bonding agent; A composite piezoelectric component characterized by leaving a cavity around the outer part of the vibrating part of the piezoelectric element and covering it with an insulating exterior resin.