JPH1197246A - Noise-absorbing core and method for fixing it to cable - Google Patents
Noise-absorbing core and method for fixing it to cableInfo
- Publication number
- JPH1197246A JPH1197246A JP25515097A JP25515097A JPH1197246A JP H1197246 A JPH1197246 A JP H1197246A JP 25515097 A JP25515097 A JP 25515097A JP 25515097 A JP25515097 A JP 25515097A JP H1197246 A JPH1197246 A JP H1197246A
- Authority
- JP
- Japan
- Prior art keywords
- hollow portion
- absorbing core
- noise absorbing
- cable
- diameter
- 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.)
- Withdrawn
Links
Landscapes
- Aerials With Secondary Devices (AREA)
- Filters And Equalizers (AREA)
- Coils Or Transformers For Communication (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電磁雑音防止装置
に関し、特にケーブルの周囲に装着されてケーブルを伝
播する電磁雑音を吸収、除去するノイズ吸収コア及び該
ノイズ吸収コアのケーブルへの固定方法に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic noise preventing device, and more particularly to a noise absorbing core mounted around a cable for absorbing and removing electromagnetic noise propagating through the cable, and a method of fixing the noise absorbing core to the cable. It is about.
【０００２】[0002]
【従来の技術】近年、デジタル電子機器をはじめ高周波
を利用する電子機器類の普及が進み、中でも準マイクロ
波帯あるいはマイクロ波帯を使用する移動体通信機器類
の普及がめざましい。このような、携帯電話に代表され
る移動体通信機器では、高速動作化が図られているた
め、線間結合の増大化や放射ノイズによる干渉等が生
じ、機器の正常な動作を妨げる、いわゆる高周波電磁障
害が少なからず生じている。2. Description of the Related Art In recent years, electronic devices using high frequencies, such as digital electronic devices, have become widespread. In particular, mobile communication devices using a quasi-microwave band or a microwave band have been remarkably spread. In such mobile communication devices typified by mobile phones, high-speed operation is attempted, so that line-to-line coupling increases, interference due to radiated noise or the like occurs, and the normal operation of the devices is hindered. Not a little high-frequency electromagnetic interference has occurred.
【０００３】電子機器等の接続ケーブルを伝播する電磁
雑音も上記した高周波電磁障害の原因となっているが、
従来、その電磁雑音を吸収、除去する電磁雑音防止装置
として、図２に示すような構造のノイズ吸収コアが知ら
れている。ノイズ吸収コアは、フェライト等の焼結体か
らなる筒状磁性体である。ケーブル１２をフェライトコ
ア１１の中空部に通した後、図２に示すようにもう一度
ケーブル１２を前記中空部に通し、ケーブル１２をフェ
ライトコア１１に巻き付けるようにする。こうすること
によってフェライトコア１１はケーブル１２に固定され
る。[0003] Electromagnetic noise that propagates through connection cables of electronic devices and the like also causes the above-mentioned high-frequency electromagnetic interference.
Conventionally, a noise absorbing core having a structure as shown in FIG. 2 has been known as an electromagnetic noise preventing device for absorbing and removing the electromagnetic noise. The noise absorbing core is a cylindrical magnetic body made of a sintered body such as ferrite. After passing the cable 12 through the hollow portion of the ferrite core 11, the cable 12 is passed through the hollow portion again as shown in FIG. 2, and the cable 12 is wound around the ferrite core 11. By doing so, the ferrite core 11 is fixed to the cable 12.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記し
た従来の雑音防止装置は、フェライト等の筒状磁性体が
焼結体であるため、作業中の落下や設置の際の接触等に
よる割れ及びかけの問題がある。更に焼結体であるため
大きくなればそれだけ重さも無視できなくなる。However, in the above-described conventional noise suppression device, since the cylindrical magnetic material such as ferrite is a sintered body, it is cracked or broken due to dropping during work or contact at the time of installation. There is a problem. Furthermore, since it is a sintered body, its weight cannot be ignored as it becomes larger.
【０００５】またケーブルでフェライトコアに巻き付け
るため、その分の長さが必要となり、しかも巻き付ける
ことによる固定のため固定方法が煩わしく、ケーブルが
緩みやすく固定が維持されにくいという問題がある。In addition, since the cable is wound around the ferrite core, a length corresponding to the length is required, and furthermore, there is a problem that the fixing method is complicated because the cable is fixed by winding, and the cable is easily loosened and the fixing is hardly maintained.
【０００６】本発明の目的は、上記した問題点を解消
し、軽量化、小型化が図れ、簡易な方法でノイズ吸収コ
アをケーブルに固定する方法を提供することである。[0006] An object of the present invention is to solve the above-mentioned problems, to provide a method for fixing a noise absorbing core to a cable by a simple method, which can be reduced in weight and size.
【０００７】[0007]
【課題を解決するための手段】本発明によれば、軟磁性
粉末とゴム硬度が６０以下の有機結合剤からなるノイズ
吸収コア本体と蓋部から構成され、前記ノイズ吸収コア
本体は、第１の中空部と、該第１の中空部の径より大き
い径をもつ第２の中空部を有し、前記蓋部は、その外径
が前記第２の中空部よりも若干大きく、前記第１の中空
部の径と同径の第３の中空部を有し、電気機器又は電子
部品のケーブルの外周部を密着包囲して電磁干渉を抑制
することを特徴とするノイズ吸収コアが得られる。According to the present invention, there is provided a noise absorbing core body made of a soft magnetic powder and an organic binder having a rubber hardness of 60 or less, and a lid. And a second hollow portion having a diameter larger than the diameter of the first hollow portion, wherein the outer diameter of the lid portion is slightly larger than that of the second hollow portion. A noise absorbing core is provided which has a third hollow portion having the same diameter as that of the hollow portion, and tightly surrounds the outer peripheral portion of the cable of the electric device or electronic component to suppress electromagnetic interference.
【０００８】さらに、本発明によれば、前記ノイズ吸収
コア本体の第２の中空部の前記第１の中空部側に周方向
に沿って係合凹部が形成され、前記蓋部の一端に前記係
合凹部と嵌合する係合凸部が周方向に沿って形成されて
いることを特徴とするノイズ吸収コアが得られる。Further, according to the present invention, an engaging recess is formed along the circumferential direction on the side of the first hollow portion of the second hollow portion of the noise absorbing core main body, and the one end of the lid portion has the engaging recess. A noise-absorbing core is obtained in which the engaging projections that fit into the engaging recesses are formed along the circumferential direction.
【０００９】さらに、本発明によれば、前記軟磁性粉末
が偏平なＦｅ−Ａｌ−Ｓｉ合金粉末であり、前記有機結
合剤がエラストマーであることを特徴とするノイズ吸収
コアが得られる。Further, according to the present invention, there is provided a noise absorbing core, wherein the soft magnetic powder is a flat Fe-Al-Si alloy powder and the organic binder is an elastomer.
【００１０】又、本発明によれば、軟磁性粉末とゴム硬
度が６０以下の有機結合剤からなるノイズ吸収コア本体
と蓋部から構成され、前記ノイズ吸収コア本体は、第１
の中空部と、該第１の中空部の径より大きい径をもつ第
２の中空部を有し、前記蓋部は、その外径が前記第２の
中空部よりも若干大きく、前記第１の中空部の径と同径
の第３の中空部を有し、前記第１の中空部、前記第２の
中空部、及び前記第３の中空部にケーブルを通した後、
前記蓋部を前記ノイズ吸収コア本体に嵌着してケーブル
を固定することを特徴とするノイズ吸収コアのケーブル
への固定方法が得られる。According to the present invention, there is provided a noise absorbing core body comprising a soft magnetic powder and an organic binder having a rubber hardness of 60 or less, and a lid.
And a second hollow portion having a diameter larger than the diameter of the first hollow portion, wherein the outer diameter of the lid portion is slightly larger than that of the second hollow portion. Having a third hollow portion having the same diameter as the hollow portion of the first, after passing a cable through the first hollow portion, the second hollow portion, and the third hollow portion,
A method for fixing the noise absorbing core to the cable is provided, wherein the cable is fixed by fitting the lid to the noise absorbing core body.
【００１１】さらに、本発明によれば、前記ノイズ吸収
コア本体の第２の中空部の前記第１の中空部側に周方向
に沿って係合凹部が形成され、前記蓋部の一端に前記係
合凹部と嵌合する係合凸部が周方向に沿って形成されて
いることを特徴とするノイズ吸収コアのケーブルへの固
定方法が得られる。Further, according to the present invention, an engagement recess is formed along the circumferential direction on the first hollow portion side of the second hollow portion of the noise absorbing core body, and the engagement recess is formed at one end of the lid portion. A method for fixing a noise absorbing core to a cable, characterized in that an engaging projection fitted to the engaging recess is formed along the circumferential direction, is obtained.
【００１２】さらに、本発明によれば、前記軟磁性粉末
が偏平なＦｅ−Ａｌ−Ｓｉ合金粉末であり、前記有機結
合剤がエラストマーであることを特徴とするノイズ吸収
コアのケーブルへの固定方法が得られる。Further, according to the present invention, the soft magnetic powder is a flat Fe-Al-Si alloy powder, and the organic binder is an elastomer. Is obtained.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態につい
て図１を参照して説明する。図１（ａ）は本発明の第１
の実施の形態によるノイズ吸収コアの分離した状態を示
した外観斜視図であり、図１（ｂ）は図１（ａ）の長手
方向に沿って切った断面図であり、図１（ｃ）は嵌着し
た状態のノイズ吸収コアの縦断面図である。Embodiments of the present invention will be described below with reference to FIG. FIG. 1A shows a first embodiment of the present invention.
1B is an external perspective view showing a separated state of the noise absorbing core according to the embodiment, FIG. 1B is a cross-sectional view taken along the longitudinal direction of FIG. 1A, and FIG. FIG. 3 is a longitudinal sectional view of the noise absorbing core in a fitted state.
【００１４】図１（ａ）に示すように、軟磁性粉末とゴ
ム硬度が６０以下の有機結合剤からなるノイズ吸収コア
本体３と蓋部４から構成され、ノイズ吸収コア本体３
は、第１の中空部と、該第１の中空部の径より大きい径
をもつ第２の中空部を有している。蓋部４は、図１
（ｂ）に示すように、その外径が前記第２の中空部より
も若干大きく、前記第１の中空部の径と同径の第３の中
空部を有している。As shown in FIG. 1A, a noise absorbing core body 3 made of a soft magnetic powder and an organic binder having a rubber hardness of 60 or less and a lid 4 are provided.
Has a first hollow portion and a second hollow portion having a diameter larger than the diameter of the first hollow portion. The lid 4 is shown in FIG.
As shown in (b), the outer diameter is slightly larger than the second hollow portion, and has a third hollow portion having the same diameter as the first hollow portion.
【００１５】ノイズ吸収コア本体３の前記第２の中空部
の前記第１の中空部側には周方向に沿って係合凹部６が
形成され、蓋部４の一端に係合凹部６と嵌合する係合凸
部５が周方向に沿って形成されている。An engagement recess 6 is formed along the circumferential direction on the first hollow side of the second hollow portion of the noise absorbing core body 3, and the engagement recess 6 is fitted to one end of the lid 4. A mating engaging projection 5 is formed along the circumferential direction.
【００１６】上記したノイズ吸収コア本体３と蓋部４
は、少なくとも軟磁性粉末と有機結合剤からなる複合磁
性体である。この複合磁性体は、以下のように絶縁性軟
磁性体と有機結合剤を用いて作成される。平均粒径１０
μｍ、アスペクト比５以上の異方性磁界を有するＦｅ−
Ａｌ−Ｓｉ合金からなる偏平軟磁性粉末８５重量部を、
硬度６０のエラストマー１５重量部を混合して作成す
る。The above-described noise absorbing core body 3 and lid 4
Is a composite magnetic material comprising at least a soft magnetic powder and an organic binder. This composite magnetic material is prepared using an insulating soft magnetic material and an organic binder as described below. Average particle size 10
μm, Fe— having an anisotropic magnetic field with an aspect ratio of 5 or more
85 parts by weight of the flat soft magnetic powder made of Al-Si alloy,
It is prepared by mixing 15 parts by weight of an elastomer having a hardness of 60.
【００１７】上記したノイズ吸収コア本体３と蓋部４か
らなるノイズ吸収コアは、前記第１の中空部、前記第２
の中空部、及び前記第３の中空部にケーブルを通した
後、蓋部４の係合凸部５をノイズ吸収コア本体３の係合
凹部６に嵌着してケーブルに固定される。この固定され
た状態（ケーブルは図示せず）を図１（ｃ）に示す。こ
こで、蓋部４の外径（係合凸部は除く）はノイズ吸収コ
ア本体３の内径（係合凹部を除く）よりも若干大きいの
で、蓋部４をノイズ吸収コア本体３に嵌着することによ
り、双方は互いにしっかり嵌合され外れにくくなる。The noise absorbing core composed of the noise absorbing core body 3 and the cover 4 is provided in the first hollow portion and the second hollow portion.
After passing the cable through the hollow portion and the third hollow portion, the engaging convex portion 5 of the lid portion 4 is fitted into the engaging concave portion 6 of the noise absorbing core body 3 and fixed to the cable. This fixed state (cable not shown) is shown in FIG. Here, the outer diameter of the cover 4 (excluding the engaging protrusion) is slightly larger than the inner diameter of the noise absorbing core main body 3 (excluding the engaging concave), so the lid 4 is fitted to the noise absorbing core main body 3. By doing so, the two are firmly fitted to each other and are hard to come off.
【００１８】また、蓋部４の外径がノイズ吸収コア本体
３の内径よりも若干大きいことで、蓋部４がノイズ吸収
コア本体３に嵌着された際に蓋部４にノイズ吸収コア本
体３の内径から内側に圧力がかかり、通されたケーブル
に対して蓋部４の内径が密着して、ケーブルに密着固定
される。Further, since the outer diameter of the lid 4 is slightly larger than the inner diameter of the noise absorbing core main body 3, the noise absorbing core main body is attached to the lid 4 when the lid 4 is fitted to the noise absorbing core main body 3. Pressure is applied to the inside from the inside diameter of the cable 3, and the inside diameter of the cover 4 closely adheres to the passed cable, and is tightly fixed to the cable.
【００１９】[0019]
【発明の効果】本発明によれば、ノイズ吸収コアの軽量
化、小型化が図れ、従来のノイズ吸収コアのケーブルへ
の固定方法と比較して、ケーブルを巻き付けるという作
業がなく簡易であり、ケーブルへの固定が煩わしくな
く、蓋部をノイズ吸収コア本体に嵌着するだけでしっか
りと固定できる。According to the present invention, the weight and size of the noise absorbing core can be reduced and compared to the conventional method of fixing the noise absorbing core to the cable. Fixing to the cable is not troublesome, and it can be fixed firmly just by fitting the lid to the noise absorbing core body.
【図１】（ａ）は本発明の第１の実施の形態によるノイ
ズ吸収コアの分離した状態を示した外観斜視図であり、
（ｂ）は（ａ）の長手方向に沿って切った断面図であ
り、（ｃ）は嵌着した状態のノイズ吸収コアの縦断面図
である。FIG. 1A is an external perspective view showing a separated state of a noise absorbing core according to a first embodiment of the present invention,
(B) is a sectional view taken along the longitudinal direction of (a), and (c) is a longitudinal sectional view of the noise absorbing core in a fitted state.
【図２】従来のノイズ吸収コアをケーブルへ固定した状
態を示した図である。FIG. 2 is a diagram showing a state in which a conventional noise absorbing core is fixed to a cable.
３ ノイズ吸収コア本体 ４ 蓋部 ５ 係合凸部 ６ 係合凹部 3 Noise Absorbing Core Body 4 Lid 5 Engagement Protrusion 6 Engagement Recess
Claims (6)
結合剤からなるノイズ吸収コア本体と蓋部から構成さ
れ、前記ノイズ吸収コア本体は、第１の中空部と、該第
１の中空部の径より大きい径をもつ第２の中空部を有
し、前記蓋部は、その外径が前記第２の中空部よりも若
干大きく、前記第１の中空部の径と同径の第３の中空部
を有し、電気機器又は電子部品のケーブルの外周部を密
着包囲して電磁干渉を抑制することを特徴とするノイズ
吸収コア。1. A noise absorbing core body comprising a soft magnetic powder and an organic binder having a rubber hardness of 60 or less and a lid, wherein the noise absorbing core body has a first hollow portion, the first hollow portion, A second hollow portion having a diameter larger than the diameter of the portion, the lid portion having a slightly larger outer diameter than the second hollow portion, and having the same diameter as the diameter of the first hollow portion; 3. A noise absorbing core having a hollow portion of No. 3 and suppressing electromagnetic interference by closely surrounding an outer peripheral portion of a cable of an electric device or an electronic component.
の前記第１の中空部側に周方向に沿って係合凹部が形成
され、前記蓋部の一端に前記係合凹部と嵌合する係合凸
部が周方向に沿って形成されていることを特徴とする請
求項１記載のノイズ吸収コア。2. An engaging recess is formed along a circumferential direction on a side of the first hollow portion of the second hollow portion of the noise absorbing core body, and is fitted to one end of the lid portion with the engaging recess. 2. The noise absorbing core according to claim 1, wherein the engaging projections are formed along a circumferential direction.
ｉ合金粉末であり、前記有機結合剤がエラストマーであ
ることを特徴とする請求項１又は２記載のノイズ吸収コ
ア。3. The soft magnetic powder according to claim 1, wherein said soft magnetic powder is flat Fe-Al-S.
The noise absorbing core according to claim 1, wherein the noise absorbing core is an i-alloy powder, and the organic binder is an elastomer.
結合剤からなるノイズ吸収コア本体と蓋部から構成さ
れ、前記ノイズ吸収コア本体は、第１の中空部と、該第
１の中空部の径より大きい径をもつ第２の中空部を有
し、前記蓋部は、その外径が前記第２の中空部よりも若
干大きく、前記第１の中空部の径と同径の第３の中空部
を有し、前記第１の中空部、前記第２の中空部、及び前
記第３の中空部にケーブルを通した後、前記蓋部を前記
ノイズ吸収コア本体に嵌着してケーブルを固定すること
を特徴とするノイズ吸収コアのケーブルへの固定方法。4. A noise absorbing core body comprising a soft magnetic powder and an organic binder having a rubber hardness of 60 or less, and a lid portion, wherein the noise absorbing core body has a first hollow portion, the first hollow portion, A second hollow portion having a diameter larger than the diameter of the portion, the lid portion having a slightly larger outer diameter than the second hollow portion, and having the same diameter as the diameter of the first hollow portion; After passing cables through the first hollow portion, the second hollow portion, and the third hollow portion, the cover portion is fitted to the noise absorbing core body. A method for fixing a noise absorbing core to a cable, comprising fixing the cable.
の前記第１の中空部側に周方向に沿って係合凹部が形成
され、前記蓋部の一端に前記係合凹部と嵌合する係合凸
部が周方向に沿って形成されていることを特徴とする請
求項４記載のノイズ吸収コアのケーブルへの固定方法。5. An engaging recess is formed along the circumferential direction on the side of the first hollow portion of the second hollow portion of the noise absorbing core main body, and is fitted with the engaging recess at one end of the lid portion. 5. The method for fixing a noise absorbing core to a cable according to claim 4, wherein said engaging projections are formed along a circumferential direction.
ｉ合金粉末であり、前記有機結合剤がエラストマーであ
ることを特徴とする請求項４又は５記載のノイズ吸収コ
アのケーブルへの固定方法。6. The soft magnetic powder according to claim 1, wherein the soft magnetic powder is flat Fe-Al-S.
The method for fixing a noise absorbing core to a cable according to claim 4 or 5, wherein the organic binder is an i-alloy powder, and the organic binder is an elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25515097A JPH1197246A (en) | 1997-09-19 | 1997-09-19 | Noise-absorbing core and method for fixing it to cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25515097A JPH1197246A (en) | 1997-09-19 | 1997-09-19 | Noise-absorbing core and method for fixing it to cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1197246A true JPH1197246A (en) | 1999-04-09 |
Family
ID=17274779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25515097A Withdrawn JPH1197246A (en) | 1997-09-19 | 1997-09-19 | Noise-absorbing core and method for fixing it to cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1197246A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001080616A3 (en) * | 2000-04-17 | 2002-02-07 | Tokin Corp | High-frequency current supressor capable of being readily attached to cable or the like and earphone system using the same |
| JP2016046401A (en) * | 2014-08-25 | 2016-04-04 | 三菱電機株式会社 | Wiring core structure, semiconductor evaluation apparatus and semiconductor device |
-
1997
- 1997-09-19 JP JP25515097A patent/JPH1197246A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001080616A3 (en) * | 2000-04-17 | 2002-02-07 | Tokin Corp | High-frequency current supressor capable of being readily attached to cable or the like and earphone system using the same |
| JP2016046401A (en) * | 2014-08-25 | 2016-04-04 | 三菱電機株式会社 | Wiring core structure, semiconductor evaluation apparatus and semiconductor device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20041207 |