JPS6275628U

JPS6275628U -

Info

Publication number: JPS6275628U
Application number: JP16819685U
Authority: JP
Priority date: 1985-10-30
Filing date: 1985-10-30
Publication date: 1987-05-14

Description

[Brief explanation of drawings]

第１図は、本考案の一実施例のノイズフイルタ
の横断面図、第２図は、その要部拡大縦断面図、
第３図は、その要部拡大横断面図、第４図は、プ
リント基板と金属ケースの取付け状態を示す説明
図、第５図は、従来のノイズフイルタの横断面図
、第６図は、その要部拡大縦断面図、第７図は、
その等価回路図、第８図は、減衰特性の概略を示
すグラフである。１，２……アース端子、３……金属ケース、４
……フイルタユニツト、５，６，７，８……入出
力電極、９，１０……アース電極、１１……プリ
ント基板、１２……コモンモードチヨークコイル
、１３，１４……コンデンサ、１５，１６，１７
，１８……入出力端子、１９，２０，２１，２２
……コンデンサの端子、２５，２６……係止片、
２９……蓋、３０，３１，３２，３３……絶縁ブ
ツシング、５０，５１……孔、５２，５３……孔
、５４……半田。 FIG. 1 is a cross-sectional view of a noise filter according to an embodiment of the present invention, and FIG. 2 is an enlarged longitudinal cross-sectional view of its main parts.
Fig. 3 is an enlarged cross-sectional view of the main part, Fig. 4 is an explanatory diagram showing the mounting state of the printed circuit board and metal case, Fig. 5 is a cross-sectional view of a conventional noise filter, and Fig. 6 is a cross-sectional view of the conventional noise filter. The enlarged longitudinal sectional view of the main part, Figure 7, is
The equivalent circuit diagram, FIG. 8, is a graph showing an outline of the attenuation characteristics. 1, 2...Earth terminal, 3...Metal case, 4
... Filter unit, 5, 6, 7, 8 ... Input/output electrode, 9, 10 ... Earth electrode, 11 ... Printed circuit board, 12 ... Common mode choke coil, 13, 14 ... Capacitor, 15, 16,17
, 18... input/output terminal, 19, 20, 21, 22
... Capacitor terminal, 25, 26 ... Locking piece,
29... Lid, 30, 31, 32, 33... Insulating bushing, 50, 51... Hole, 52, 53... Hole, 54... Solder.

Claims

[Claims for Utility Model Registration] At least a conductive case, a printed circuit board fitted into the conductive case, and a filter including at least a capacitor attached to the printed circuit board and housed in the conductive case. In the noise filter, the conductive case is formed with a locking piece that protrudes into the case, the printed circuit board is formed with a hole into which the locking piece can fit, and A noise filter characterized in that a hole is formed continuously with the hole through which a terminal of the capacitor can be inserted, and the locking piece of the conductive case and the terminal of the capacitor are directly electrically connected.