JPH0284806A - Noise filter - Google Patents
Noise filterInfo
- Publication number
- JPH0284806A JPH0284806A JP23711788A JP23711788A JPH0284806A JP H0284806 A JPH0284806 A JP H0284806A JP 23711788 A JP23711788 A JP 23711788A JP 23711788 A JP23711788 A JP 23711788A JP H0284806 A JPH0284806 A JP H0284806A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- lead wire
- noise filter
- winding
- inductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 34
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000004804 winding Methods 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
イ０発明の目的
〔産業上の利用分野〕
本発明は各種電子機器に使用されるノイズフィルタ、特
に電子機器から輻射される高周波の不要輻射電波の減衰
、あるいは電子機器から輻射される不要輻射電波の侵入
による誤動作を防止するために用いられる小形のノイズ
フィルタに関するものである。DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention [Field of Industrial Application] The present invention is a noise filter used in various electronic devices, and in particular, a method for attenuating high-frequency unnecessary radio waves radiated from electronic devices, or The present invention relates to a small noise filter used to prevent malfunctions due to the intrusion of unnecessary radio waves radiated from.
従来この種のノイズフィルタとしては、第２図に示すよ
うなリード線付きインダクタと別途に用意したリード線
付きコンデンサ・を組み合わせて構成していた。Conventionally, this type of noise filter has been constructed by combining an inductor with a lead wire as shown in FIG. 2 and a separately prepared capacitor with a lead wire.
第２図はリード線３をとりつけた鍔付の柱状磁ｔｒ １
に巻線２を巻き回し、その両端をリード線３に接続固定
したものである。このような従来の構成では第２図に示
すリード線付インダクタに、更にリード線付きコンデン
サを組み合わせて基板上に配置し使用するため、取り扱
いが不便で基板取り付は面積を広く要するという問題点
があった。Figure 2 shows a columnar magnetic tr 1 with a flange attached with a lead wire 3.
A winding wire 2 is wound around the wire, and both ends thereof are connected and fixed to a lead wire 3. In this conventional configuration, the inductor with a lead wire shown in Figure 2 is further combined with a capacitor with a lead wire and placed on the board, which causes problems in that it is inconvenient to handle and requires a large area for mounting on the board. was there.
本発明は従来のインダクタとコンデンサを組み合わせた
ノイズフィルタでは、リード線付きインダクタと、リー
ド線付きコンデンサを別個に基板上に取り付は構成した
が、本発明は巻線を巻き回した柱状磁心の中心に貫通孔
を取り付け、貫通孔の中にコンデンサを実装した構造と
し、コンデンサとインダクタのリード線を共通にし、取
り付は場所を要せず、しかも実装も容易なノイズフィル
タとするものである。In the conventional noise filter that combines an inductor and a capacitor, the inductor with a lead wire and the capacitor with a lead wire are mounted separately on a board. It has a structure in which a through hole is installed in the center and a capacitor is mounted in the through hole, and the lead wires of the capacitor and inductor are shared, making it a noise filter that does not require space and is easy to mount. .
ロ６発明の構成
〔課題を解決するための手段〕
通常使用される２端子の円柱状ドラムコア型インダクタ
のリード線を除去し、ドラムコア型インダクタの中央に
はリード線付きコンデンサを挿入出来る貫通孔をあけ、
貫通孔の中にノイズフィルタを構成する両端面にリード
線を取り付けであるコンデンサを挿入し、ドラムコア外
周に巻き回した巻線の両端末をそれぞれコンデンサのリ
ード線に巻回し接続して本発明のノイズフィルタを構成
する。B6 Structure of the invention [Means for solving the problem] The lead wires of a commonly used two-terminal cylindrical drum core type inductor are removed, and a through hole is provided in the center of the drum core type inductor into which a capacitor with a lead wire can be inserted. Open,
A capacitor with lead wires attached to both end faces constituting a noise filter is inserted into the through hole, and both ends of the winding wound around the outer periphery of the drum core are wound and connected to the lead wires of the capacitor respectively. Configure the noise filter.
即ち本発明は巻線を巻き回した柱状磁心の軸方向中央部
に貫通孔を設け、前記貫通孔内にリード線付きコンデン
サを挿入固定し前記柱状磁心に巻き回した巻線の両端末
を前記リード線付きコンデンサのリード線に接続固定し
、構成したことを特徴とするノイズフィルタである。That is, in the present invention, a through hole is provided in the axial center of a columnar magnetic core around which a winding is wound, a capacitor with a lead wire is inserted and fixed into the through hole, and both ends of the winding wound around the columnar magnetic core are inserted into the through hole. This is a noise filter characterized in that it is connected and fixed to the lead wire of a capacitor with a lead wire.
〔作用〕
本発明では従来の柱状磁心に巻線を施し、両端にリード
線を取り付けたインダクタと、リード線を持つコンデン
サを組み合わせたノイズフィルタにおいて、ノイズフィ
ルタを構成するコンデンサを、インダクタ軸方向中央に
貫通孔を設け、一体に収めた構造としコンデンサの持つ
リード線とインダクタの持つリード線をコンデンサのリ
ード線で兼用し、柱状磁心に巻き回した巻線を貫通孔か
らつき出たコンデンサのリード線に接続するためノイズ
フィルタの形状は小型となり、又外部導体への接続も両
端へ出る２つのリード線のみとなり接続も容易になる。[Function] In the present invention, in a noise filter that combines a conventional inductor with wires wound around a columnar magnetic core and lead wires attached to both ends, and a capacitor with lead wires, the capacitor constituting the noise filter is placed at the center of the inductor in the axial direction. A through hole is provided in the cylindrical core, and the capacitor's lead wire serves as both the capacitor's lead wire and the inductor's lead wire, and the capacitor's lead protrudes from the through hole. Since the noise filter is connected to the wire, the shape of the noise filter becomes small, and the connection to the external conductor is made easy because only two lead wires come out from both ends.
本発明は第１図に示すように、巻線２を巻き回した柱状
磁心１の軸方向中央部に貫通孔５を設け、前記貫通孔５
内にリード線付きコンデンサ４を挿入固定し、前記巻線
２の巻線端子接続部６を前記リード線付きコンデンサ４
のリードＭ３に接続固定しノイズフィルタとしたもので
、本発明は従来の製品と比軟してインダクタとコンデン
サを効率的に一体化し、小形で取り扱いの容易なノイズ
フィルタを提供することを目的とするものである。As shown in FIG. 1, the present invention provides a through hole 5 in the axial center of a columnar magnetic core 1 around which a winding 2 is wound.
A capacitor 4 with a lead wire is inserted and fixed in the capacitor 4 with a lead wire, and the winding terminal connection portion 6 of the winding 2 is connected to the capacitor 4 with a lead wire.
The purpose of the present invention is to provide a noise filter that is compact and easy to handle by efficiently integrating an inductor and a capacitor compared to conventional products. It is something to do.
第１図は本発明の一実施例によるノイズフィルタの断面
図である。中実軸方向に貫通孔５を設けた鍔付の柱状磁
心１の前記貫通孔５に、両端にリード線３を取り付けた
コンデンサ４を挿入固定し、柱状磁心１に巻き回された
巻線２の先端をリード線３に接続固定し、外装用樹脂に
よって外装したものである。ここで前記鍔付の柱状磁心
１は例えば透磁率μが約７００のＮｌＺｎ系フェライト
コアである。FIG. 1 is a sectional view of a noise filter according to an embodiment of the present invention. A capacitor 4 with lead wires 3 attached to both ends is inserted and fixed into the through hole 5 of a flanged columnar magnetic core 1 having a through hole 5 in the direction of the solid axis, and a winding 2 is wound around the columnar magnetic core 1. The tip of the lead wire 3 is connected and fixed to the lead wire 3, and the lead wire 3 is coated with an exterior resin. Here, the flanged columnar magnetic core 1 is, for example, an NlZn-based ferrite core with a magnetic permeability μ of about 700.
又前記コンデンサ４は例えば静電容量約１０００ＰＦの
貫通形コンデンサである。The capacitor 4 is, for example, a feedthrough capacitor with a capacitance of about 1000 PF.
ハ０発明の効果
〔発明の効果〕
以上述べたように本発明によればリード線付きコンデン
サを柱状磁心内に挿入固定することによりコンデンサと
インダクタを一体化でき、従来のインダクタと同じ大き
さでノイズフィルタが構成でき、取り扱いが容易で実装
面積の小さい小形のノイズフィルタが得られるという効
果がある。Effects of the Invention [Effects of the Invention] As described above, according to the present invention, by inserting and fixing a capacitor with a lead wire into a columnar magnetic core, a capacitor and an inductor can be integrated, and the size is the same as that of a conventional inductor. This has the advantage that a noise filter can be constructed, and a small noise filter that is easy to handle and has a small mounting area can be obtained.
第１図は、本発明の一実施例を示す断面図、第２図は従
来のインダクタの例を示す断面図である。
１・・・柱状磁心、２・・・巻線、３・・・リード線、
４・・・コンデンサ、５・・・貫通孔、６・・・巻線端
子接続部。
特許出願人 東北金属工業株式会社FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view showing an example of a conventional inductor. 1... Columnar magnetic core, 2... Winding wire, 3... Lead wire,
4... Capacitor, 5... Through hole, 6... Winding terminal connection part. Patent applicant: Tohoku Metal Industry Co., Ltd.
Claims (1)
を設け、前記貫通孔内にリード線付きコンデンサを挿入
固定し前記柱状磁心に巻き回した巻線の両端末を前記リ
ード線付きコンデンサのリード線に接続固定し、構成し
たことを特徴とするノイズフィルタ。1. A through hole is provided in the axial center of the columnar magnetic core around which a winding is wound, a capacitor with a lead wire is inserted and fixed into the through hole, and both ends of the winding wound around the columnar magnetic core are connected to the capacitor with a lead wire. A noise filter characterized by being connected and fixed to a lead wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23711788A JPH0284806A (en) | 1988-09-20 | 1988-09-20 | Noise filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23711788A JPH0284806A (en) | 1988-09-20 | 1988-09-20 | Noise filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0284806A true JPH0284806A (en) | 1990-03-26 |
Family
ID=17010666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23711788A Pending JPH0284806A (en) | 1988-09-20 | 1988-09-20 | Noise filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0284806A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108702139A (en) * | 2016-03-04 | 2018-10-23 | 株式会社自动网络技术研究所 | Noise filter |
-
1988
- 1988-09-20 JP JP23711788A patent/JPH0284806A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108702139A (en) * | 2016-03-04 | 2018-10-23 | 株式会社自动网络技术研究所 | Noise filter |
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