JPH042122U

JPH042122U -

Info

Publication number: JPH042122U
Application number: JP5273290U
Authority: JP
Priority date: 1990-03-09
Filing date: 1990-05-21
Publication date: 1992-01-09

Description

[Brief explanation of drawings]

添付図面は本考案の一実施例を示し、第１図Ａ
及び第１図Ｂは電気濾波器Ｆの一例を示す縦断側
面図、第２図は第１図Ａのイ−イ線断面図、第３
図はプリント基板ｐに該電気濾波器Ｆを実装した
状態を示す一部縦断側面図、第４図は電気濾波器
Ｆを適用した濾過回路図の一例である。１……ケース、２……開口、４ａ，４ｂ……直
列共振子、５ａ，５ｂ……並列共振子、６，８，
９，１３……端子板、６ｔ，８ｔ，９ｔ，１３ｔ
……接続脚、１７……封止板、２０ａ，２０ａ，
２０ｂ，２０ｃ……段付支持面、２１，２２……
支持面部、Ｆ……電気濾波器。 The accompanying drawings show an embodiment of the present invention, and FIG.
1B is a vertical sectional side view showing an example of the electric filter F, FIG. 2 is a sectional view taken along line A--I of FIG.
The figure is a partially longitudinal side view showing a state in which the electric filter F is mounted on a printed circuit board p, and FIG. 4 is an example of a filtering circuit diagram to which the electric filter F is applied. 1... Case, 2... Opening, 4a, 4b... Series resonator, 5a, 5b... Parallel resonator, 6, 8,
9, 13...Terminal board, 6t, 8t, 9t, 13t
... Connection leg, 17 ... Sealing plate, 20a, 20a,
20b, 20c...Stepped support surface, 21, 22...
Support surface part, F...Electric filter.

Claims

[Claims for Utility Model Registration] 1. A rectangular series resonator and a parallel resonator are housed in a case to constitute a predetermined basic unit circuit, and the electrodes of the series resonator or parallel resonator and the electric In a filtering circuit equipped with a ladder-type electric filter in which the connecting leg of the terminal plate connected to the terminal board is led out to the outside, the supporting surface part of the outer edge of the small series resonator and the supporting surface part of the outer edge of the large parallel resonator. 1. A ladder-type electric filter characterized in that stepped support surfaces each having a continuous stepped support surface are provided on both inner surfaces of the case. 2. A rectangular series resonator and a parallel resonator are housed in a case to form a predetermined basic unit circuit, and a terminal plate is electrically connected to the electrodes of the series resonator or parallel resonator from the case. In a filtering circuit equipped with a ladder-type electric filter whose leg pieces are led out to the outside, a support surface portion on the outer edge of a small series resonator and a support surface portion on the outer edge of a large parallel resonator are continuous in a stepped manner. In addition to providing stepped support surfaces on both inner surfaces of the case,
A supporting surface portion of the outer edge of the small series resonator is also provided on the ceiling surface of the case and on the inner surface of the sealing plate covering the opening of the case.
A ladder-type electric filter characterized in that a stepped support surface is provided, each of which is continuous with the support surface portion of the outer edge of a large parallel resonator.