JPH0221721U

JPH0221721U -

Info

Publication number: JPH0221721U
Application number: JP9949188U
Authority: JP
Priority date: 1988-07-27
Filing date: 1988-07-27
Publication date: 1990-02-14

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例を示すラインフイ
ルターの斜視図、第２図は第１図のラインフイル
ターのコアカバー、トロイダルコアを分解して示
す斜視図、第３図は第２図を組み合わせた斜視図
、第４図は従来のラインフイルターの一例を示す
斜視図、第５図は第４図のラインフイルターのコ
アカバー、トロイダルコアに分解して示す斜視図
、第６図はこの考案のラインフイルターと、従来
のラインフイルターの周波数によるインピーダン
ス特性図である。１……コアカバー、２ａ，２ｂ……絶縁突起、
３……突起、４……ベース、６……トロイダルコ
ア、７……貫通孔、８……内周面、８ａ……内筒
、９……外周面、９ａ……外筒、１２……絶縁板
。 Fig. 1 is a perspective view of a line filter showing an embodiment of this invention, Fig. 2 is an exploded perspective view of the core cover and toroidal core of the line filter shown in Fig. 1, and Fig. 3 is a perspective view of the line filter shown in Fig. 2. Fig. 4 is a perspective view showing an example of a conventional line filter; Fig. 5 is a perspective view showing the core cover and toroidal core of the line filter in Fig. 4 disassembled; Fig. 6 is a perspective view of the line filter of this invention. FIG. 2 is an impedance characteristic diagram of a line filter according to frequency and a conventional line filter. 1... Core cover, 2a, 2b... Insulating protrusion,
3... Protrusion, 4... Base, 6... Toroidal core, 7... Through hole, 8... Inner peripheral surface, 8a... Inner cylinder, 9... Outer peripheral surface, 9a... Outer cylinder, 12... Insulating board.

Claims

[Claims for Utility Model Registration] A pair of annular core cases 1 with a substantially U-shaped cross section, in which an outer cylinder 9a, an inner cylinder 8a, and a through hole 7 are substantially concentric, and house a toroidal core 6. Outer cylinder 9a
A pair of insulating projections 2a, 2b are provided along the substantially U-shaped cross section of the outer peripheral surface 9 of the inner cylinder 8a and the inner peripheral surface 8a of the inner cylinder 8a. A protrusion 3 is provided on each outer circumferential surface 9, a base 4 having an insertion groove 5 into which a lead wire 13 is inserted is provided in one insulating protrusion 2b, and a coil 10 is separated by the protrusion 3 and placed in order on one outer circumferential surface 9. Similarly, on the other outer peripheral surface 9, the coil 11 is divided by the projections 3 and wound continuously in order, and the lead wires 13 of the coils 10 and 11 are inserted into the insertion groove 5 provided in the base 4. A line filter characterized by: