JPS6440919U

JPS6440919U -

Info

Publication number: JPS6440919U
Application number: JP11184588U
Authority: JP
Priority date: 1988-08-26
Filing date: 1988-08-26
Publication date: 1989-03-10

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係るセラミツクフ
イルタを示し、Ａは縦断側面図、ＢはＡ図イ―イ
線に沿う正断面図、Ｃは外殻を除去したフイルタ
の分解斜視図である。第２図は本考案の他例に係
るもので、小容量濾波要素の連結体と大容量濾波
要素の連結体の対応針視図を示す。１……小容量の濾波要素、１１……圧電共振子
、１２……絶縁枠、１２ａ……開口部、１２ｂ，
１２ｂ′……小突片、１３，１３′……端子板、
１３ａ，１３ａ′……小突起、１３ｂ，１３ｂ′
……小孔、２……小容量の濾波要素、２１……圧
電共振子、２２……絶縁枠、２２ａ……開口部、
２２ｂ，２２ｂ′……小突片、２３，２３′……
端子板、２３ａ，２３ａ′……小突起、２３ｂ，
２３ｂ′……小孔、３……絶縁外殻、Ｇ……絶縁
間隔。 Fig. 1 shows a ceramic filter according to an embodiment of the present invention, where A is a longitudinal side view, B is a front sectional view taken along the line E-I in Fig. A, and C is an exploded perspective view of the filter with the outer shell removed. be. FIG. 2 shows another example of the present invention, which is a corresponding needle perspective view of a connected body of small-capacity filtering elements and a connected body of large-capacity filtering elements. DESCRIPTION OF SYMBOLS 1...Small capacity filtering element, 11...Piezoelectric resonator, 12...Insulating frame, 12a...Opening, 12b,
12b'...Small projecting piece, 13,13'...Terminal board,
13a, 13a'... small protrusion, 13b, 13b'
... Small hole, 2 ... Small capacity filtering element, 21 ... Piezoelectric resonator, 22 ... Insulating frame, 22a ... Opening,
22b, 22b'...Small projecting piece, 23, 23'...
Terminal plate, 23a, 23a'... small protrusion, 23b,
23b'...Small hole, 3...Insulating outer shell, G...Insulating interval.

Claims

[Scope of utility model registration request]

An insulating frame with small protrusions protruding from the front and back surfaces, a small-capacity piezoelectric resonator housed in the opening of the insulating frame, and a vibration node of the piezoelectric resonator that comes into contact with the above-mentioned small protrusions. An insulating frame comprising a pair of terminal plates that cover the front and back surfaces of an insulating frame with small holes that fit together, an independent small-capacity filtering element, and small protrusions protruding from the front and back surfaces, and the insulating frame. a large-capacity piezoelectric resonator housed in the opening of the insulating frame, and a pair of small holes that abut the vibration nodes of the piezoelectric resonator and fit with the small protrusions, and cover the front and back surfaces of the insulating frame. a plurality of independent large-capacity filtering elements for the small-capacity filtering element, and an insulation interval necessary to construct a desired filtering circuit between the opposing terminal plates of each filtering element. A ceramic filter is characterized in that the filters are arranged and sealed together by an insulating outer shell formed by immersing them in a thermoplastic resin.