JPH0295178U

JPH0295178U -

Info

Publication number: JPH0295178U
Application number: JP1989002565U
Authority: JP
Priority date: 1989-01-12
Filing date: 1989-01-12
Publication date: 1990-07-30
Anticipated expiration: 2004-01-12
Also published as: JPH082943Y2

Description

[Brief explanation of drawings]

第１図は本考案の第１の実施例の外観斜視図、
第２図は本考案の実施例の閉磁路コア内の磁束の
説明図、同図ａはコモンモードノイズ電流による
磁束の方向を示す図、同図ｂはノーマルモードの
信号電流による磁束の方向を示す図、第３図ａは
第１図の信号伝送方向縦断面図でコイルから発生
する漏洩磁束が外部のプリント板に影響する様子
を説明する図、第３図ｂは第３図ａのスプリング
コンタクトとコイルの間にできる浮遊容量の作用
を説明する図、第４図は本考案の第２の実施例の
外観斜視図、第５図は第４図の実施例の閉磁路フ
ラツトコア内の磁束の説明図、同図ａはコモンモ
ードノイズ電流による磁束の方向を示す図、同図
ｂはノーマルモードの信号電流による磁束の方向
を示す図、第６図は従来のモジユラコネクタの分
解外観斜視図、同図ａはモジユラジヤツク、同図
ｂはモジユラプラグ、第７図は第６図の縦断面図
、同図ａはモジユラジヤツク、同図ｂはモジユラ
プラグ、第８図はモジユラコネクタ嵌合状態の縦
断面図、第９図はシールドを用いた従来の雑音阻
止形モジユラコネクタの説明図、同図ａはモジユ
ラジヤツク、同図ｂはモジユラプラグ、同図ｃは
嵌合状態の縦断面図、第１０図はフエライトビー
スを用いた従来の雑音阻止形モジユラジヤツクの
外観斜視図である。１……モジユラジヤツク、２……スプリングコ
ンタクト溝、３……プラグ挿入口、４……モジユ
ラプラグ、５……プラグコンタクト溝、６……ロ
ツク片、７……多対線路、８……スプリングコン
タクト、９……スプリングコンタクト８の外部接
続端子、１０……プラグコンタクト、１１……多
対線路７の芯線、１２，１３……シールド板また
はケース、１４……多対線路７をシールド化した
伝送線路、１５……フエライトビーズ、１６……
棒状内部コア、１７……外部コア、１８……プリ
ント板、１９……閉磁路フラツトコア、ＩＣ……
コモンモードノイズ電流、ＩＮ……ノーマルモー
ドの信号電流。 FIG. 1 is an external perspective view of the first embodiment of the present invention;
Fig. 2 is an explanatory diagram of the magnetic flux in the closed magnetic circuit core of the embodiment of the present invention, Fig. 2a shows the direction of magnetic flux due to common mode noise current, and Fig. 2b shows the direction of magnetic flux due to normal mode signal current. Figure 3a is a longitudinal sectional view in the signal transmission direction of Figure 1, and is a diagram illustrating how the leakage magnetic flux generated from the coil affects the external printed board, Figure 3b is the spring in Figure 3a. Figure 4 is a perspective view of the external appearance of the second embodiment of the present invention; Figure 5 is the magnetic flux in the closed magnetic circuit flat core of the embodiment of Figure 4. Fig. 6 is an exploded perspective view of a conventional modular connector. Fig. 7 shows the modular jack, b shows the modular plug, Fig. 7 shows the longitudinal cross-section of Fig. 6, shows the modular jack, b shows the modular plug, and Fig. 8 shows the longitudinal cross-section of the modular connector in the fitted state. 9 is an explanatory diagram of a conventional noise-blocking modular connector using a shield; figure a shows a modular jack; figure b shows a modular plug; figure c shows a vertical cross-sectional view of the mated state; figure 10 1 is a perspective view of a conventional noise-blocking modular jack using ferrite beads. 1... Modular jack, 2... Spring contact groove, 3... Plug insertion port, 4... Modular plug, 5... Plug contact groove, 6... Lock piece, 7... Multi-pair line, 8... Spring contact, 9... External connection terminal of spring contact 8, 10... Plug contact, 11... Core wire of multi-pair line 7, 12, 13... Shield plate or case, 14... Transmission line with shielded multi-pair line 7 , 15...ferrite beads, 16...
Rod-shaped inner core, 17...Outer core, 18...Printed board, 19...Closed magnetic circuit flat core, IC...
Common mode noise current, IN...Normal mode signal current.

Claims

[Scope of Claim for Utility Model Registration] 1. A rod-shaped inner core that is parallel to the upper corner of the surface facing the plug insertion opening of the modular jack housing and is wound with a connection wire of a transmission line connected to each contact spring. 1. A noise suppression module comprising a closed magnetic circuit core including an external core that surrounds all or part of the periphery of the closed magnetic circuit core. 2. The noise suppression module jack according to claim 1, further comprising a closed magnetic circuit flat core surrounding the connection line of the transmission line connected to each contact spring.