JPH0375633U

JPH0375633U -

Info

Publication number: JPH0375633U
Application number: JP13695489U
Authority: JP
Priority date: 1989-11-27
Filing date: 1989-11-27
Publication date: 1991-07-30

Description

[Brief explanation of the drawing]

添付図面は本考案の実施例を示し、第１図は電
気濾波器Ｆの基体の斜視図、第２図は同縦断側面
図、第３図は第２図Ａ−Ａ線断面図、第４図は絶
縁板６の斜視図、第５図は本考案の第一手段を示
す電気濾波器Ｆの一部切欠側面図、第６図は同変
形例の斜視図、第７図は他の変形例の一部の縦断
側面図、第８図は第二手段を示す電気濾波器Ｆの
側面図、第９図イ，ロは夫々第三手段を示す電気
濾波器Ｆの側面図、第１０図は電気濾波器Ｆを適
用した濾過回路図である。１…ケース、２…開口、４…直列共振子、５…
入力側端子板、７…アース側端子板、８…並列共
振子、９…導電板、１２，１３…接続脚片、２０
…絶縁層、２１…導通片、２４…導電塗膜、２５
…絶縁層、Ｆ…電気濾波器。 The accompanying drawings show an embodiment of the present invention, in which FIG. 1 is a perspective view of the base of the electric filter F, FIG. 2 is a vertical side view thereof, FIG. The figure is a perspective view of the insulating plate 6, FIG. 5 is a partially cutaway side view of the electric filter F showing the first means of the present invention, FIG. 6 is a perspective view of the same modification, and FIG. 7 is another modification. A vertical sectional side view of a part of the example, FIG. 8 is a side view of the electric filter F showing the second means, FIG. 9 A and B are side views of the electric filter F showing the third means, and FIG. is a filtering circuit diagram to which electric filter F is applied. 1... Case, 2... Opening, 4... Series resonator, 5...
Input side terminal board, 7... Earth side terminal board, 8... Parallel resonator, 9... Conductive plate, 12, 13... Connection leg piece, 20
...Insulating layer, 21...Conducting piece, 24...Conductive coating film, 25
...Insulating layer, F...Electric filter.

Claims

[Claims for Utility Model Registration] 1. A series resonator and a parallel resonator are housed in a conductive metal case to constitute a predetermined unit filtering circuit, and the case is electrically connected to the electrodes of the series resonator or parallel resonator. In the ladder-type electric filter, the connecting leg of the terminal plate that is connected to the metal case and that is electrically connected to other electrodes of the series resonator or the parallel resonator is led out from the opening surface of the case. At the same time, an insulating layer is provided on the bottom surface of the metal case, and the connection legs of the terminal board are bent inward twice and the ends thereof are placed along the bottom surface of the insulating layer, and the terminal board is connected to the metal case. A conductive piece extending along the bottom surface of the insulating layer, and an end of the connecting leg piece and the conductive piece are electrically connected to a required conductive path on the printed circuit board, respectively. Ladder type electric filter. 2 A series resonator and a parallel resonator are housed in a conductive metal case to form a predetermined unit filter circuit, the case is electrically connected to the electrodes of the series resonator or the parallel resonator, and the opening surface of the case is In a ladder-type electric filter in which a connecting leg of a terminal plate that is electrically connected to another electrode of a series resonator or a parallel resonator is led out, an insulating layer is disposed on the bottom surface of the metal case. At the same time, the connecting legs of the terminal board are bent inward twice and the ends thereof are arranged along the bottom surface of the insulating layer, and a conductive coating is applied to one side of the metal case. extends on the bottom surface of the insulating layer, and the parallel ends of the connecting legs and the extended ends of the conductive coating are electrically connected to the required conductive paths on the printed circuit board, respectively. Filter. 3 A series resonator and a parallel resonator are housed in a conductive metal case to form a predetermined ladder type filtering circuit, the case is electrically connected to the electrodes of the series resonator or the parallel resonator, and the opening of the case is In a ladder-type electric filter in which a connecting leg of a terminal plate that is electrically connected to another electrode of a series resonator or a parallel resonator is led out from a surface, a lower surface of the connecting leg of the terminal plate is provided. Forming an insulating layer and bending it inward twice, disposing the end portion along the bottom surface of the metal case so that the insulating layer faces the surface,
A ladder-type electric filter characterized in that the ends of the connecting leg pieces and the metal case are electrically connected to required conductive paths on a printed circuit board, respectively.