WO2019124406A1 - Filtre antiparasite destiné à un câble - Google Patents

Filtre antiparasite destiné à un câble Download PDF

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Publication number
WO2019124406A1
WO2019124406A1 PCT/JP2018/046649 JP2018046649W WO2019124406A1 WO 2019124406 A1 WO2019124406 A1 WO 2019124406A1 JP 2018046649 W JP2018046649 W JP 2018046649W WO 2019124406 A1 WO2019124406 A1 WO 2019124406A1
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WO
WIPO (PCT)
Prior art keywords
cable
noise filter
noise
ring
resin
Prior art date
Application number
PCT/JP2018/046649
Other languages
English (en)
Japanese (ja)
Inventor
羽田　正二
Original Assignee
Ntn株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ntn株式会社 filed Critical Ntn株式会社
Publication of WO2019124406A1 publication Critical patent/WO2019124406A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/28—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder dispersed or suspended in a bonding agent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
    • H01F1/37—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles in a bonding agent
    • H01F1/375—Flexible bodies
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields

Definitions

  • the present invention relates to a cable noise filter used to suppress noise generated from a cable.
  • a first insulating layer is formed outside the core wire, a shield layer made of metal is formed outside the first insulating layer, and a second insulating layer is formed outside the shield layer.
  • An amorphous magnetic layer is formed on at least a part of the outer side of the second insulating layer, and an outer insulating coating made of insulating resin or rubber is formed on the outer side of the amorphous magnetic layer.
  • a shielded cable is formed, for example, by winding an amorphous magnetic material tape along the length of the shield wire.
  • the amorphous magnetic material tape is obtained by mixing and molding amorphous magnetic material powder and a synthetic resin such as polyester, and the amorphous magnetic material tape is concentrated on a part of the shielded wire. It is described that a common mode choke coil closely attached to a shield wire can be formed by winding the coil many times.
  • Patent Document 2 describes a noise suppression band for an electric cable, which is used by being spirally wound around a conductor.
  • the noise suppression band for electric cable is a magnetic thin strip made of a Co-based amorphous that can be bent by 90 degrees, and having a flexible resin adhered to at least one surface. This is used by spirally winding around the conductor.
  • the amorphous magnetic tape described in Patent Document 1 is integrally incorporated in a shielded wire.
  • the noise suppression band for an electric cable described in Patent Document 2 is used by being wound around a conductor, and intended to be used for a cable that is already attached to a device and generates noise. It has not been.
  • An object of the present invention is to provide a noise filter for a cable, which can suppress the noise generated from the cable with insufficient noise countermeasures in a retrofit.
  • the noise filter for a cable of the present invention is It is a molded body in which a natural resin, a synthetic resin or a silicone resin having flexibility and insulation and a large number of magnetic particles are mixed, and is characterized in that it can be retrofitted around the outer periphery of a cable.
  • the noise filter for cables of the present invention is
  • the magnetic particles are fine particles of a ferromagnetic material having an insulating film formed on the surface.
  • the noise filter for cables of the present invention is The ferromagnetic fine particles are characterized in that they are fine particles of iron, nickel, cobalt or ferrite having a low insulating property.
  • the noise filter for cables of the present invention is The magnetic particles are characterized in that they are fine particles of ferrite having high insulating properties.
  • the noise filter for cables of the present invention is It is characterized in that it can be maintained in a bent shape and can be wound in a ring around a cable.
  • the noise filter for cables of the present invention is It is a ring-like elastic body when no force is applied, and is characterized in that a part of the ring is cut and the cable can be inserted into the ring by pushing out the cut portion. .
  • the noise filter for cables of the present invention is It is a sticky silicone tape and is characterized in that it can be attached to a cable.
  • the noise filter for cables of the present invention is It is characterized in that it is in the form of a string or a band, and can be spirally wound around a cable.
  • produces from the cable with inadequate noise measures can be suppressed by retrofitting.
  • FIG. 2A shows the shape of the rod during storage.
  • FIG. 2B shows a state in which the cable is wound in a ring shape.
  • FIG. 3A shows the shape of the ring during storage.
  • FIG. 3B shows a shape in which the cut portion is pushed out.
  • FIG. 3C shows the shape of a ring into which a cable is inserted.
  • FIG. 1 is a cross-sectional view showing an example of the structure of the cable noise filter 1 according to the embodiment of the present invention.
  • the cable noise filter 1 is a molded body in which a resin 10 having flexibility and insulating properties and a large number of magnetic particles 20 are mixed.
  • the cable noise filter 1 is manufactured by mixing and molding the resin 10 and a large number of magnetic particles 20.
  • the resin 10 is, for example, a natural resin, a synthetic resin or a silicone resin.
  • the magnetic particles 20 be fine particles because the eddy current loss is reduced. Since the resin 10 has insulation, the magnetic particles 20 may not necessarily have insulation. However, the plurality of magnetic particles 20 may be in contact in the manufacturing process. Therefore, it is desirable that the magnetic particles 20 be, for example, fine particles of ferromagnetic material having an insulating film formed on the surface.
  • the ferromagnetic material used to manufacture the magnetic particles 20 is iron, nickel, cobalt, ferrite having a low insulating property, or the like. Alternatively, it is desirable that the magnetic particles 20 be, for example, fine particles of ferrite having high insulating properties.
  • the cable noise filter 1 is wound around the outer periphery of the cable and used.
  • the cable may be a single cable or a plurality of cables coated with an insulating layer.
  • the cable may generate noise. In such a case, noise can be suppressed by additionally winding the cable noise filter 1 around the cable.
  • FIG. 2 shows a first cable noise filter 2 which is a specific example of the cable noise filter 1 of FIG.
  • the cable noise filter 2 is rod-shaped when stored.
  • the shape of the cross section is a square, a hexagon, a circle or the like.
  • the cable noise filter 2 is bendable, and retains its shape when bent into a certain shape.
  • the cable noise noise filter 2 can be wound in a ring around the outer periphery of the cable 30 so that one end and the other end overlap, as shown in FIG. 2 (B).
  • the cable noise filter 2 maintains its shape once it is wound around the cable 30 in a ring shape.
  • FIG. 3 shows a second cable noise filter 3 which is a specific example of the cable noise filter 1 of FIG.
  • the cable noise filter 3 is an elastic body, and is ring-shaped when no force is applied.
  • the shape of the cross section is a square, a hexagon, a circle or the like.
  • the cable noise filter 3 is cut at a predetermined position of the ring, and one end and the other end overlap in the cut portion. By applying a force in the direction of the arrow in FIG. 3B and pulling it outward, the cut portion can be pushed apart. As shown in FIG.
  • FIG. 4 shows a third cable noise filter 4 which is a specific example of the cable noise filter 1 of FIG.
  • the cable noise filter 4 is a silicone tape.
  • the cable noise filter 4 has a predetermined thickness of about several millimeters.
  • the cable noise filter 4 has adhesiveness. As shown in FIG. 4, the cable noise filter 4 is used by being attached to the outer periphery of the cable 30.
  • FIG. 5 shows a fourth cable noise filter 5 which is a specific example of the cable noise filter 1 of FIG.
  • the cable noise filter 5 is in the form of a string having a predetermined thickness or a band having a predetermined thickness. As shown in FIG. 5, the cable noise filter 5 is used by being spirally wound around the outer periphery of the cable 30. The cable noise filter 5 may be wound over the entire length of the cable 30, or may be wound only on a predetermined portion.
  • the present invention it is possible to retroactively suppress noise generated from a cable whose noise countermeasure is insufficient.
  • common mode noise can be suppressed by winding the cable noise filter of the present invention around a cable in which a plurality of cables are put together.
  • magnetism can be shielded at the wound portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Insulated Conductors (AREA)
  • Communication Cables (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

La présente invention vise à réduire à un minimum, par post-transformation, le bruit produit par un câble dans lequel des contre-mesures de bruit sont insuffisantes. L'invention concerne un filtre antiparasite (1) destiné à un câble, le filtre antiparasite (1) étant un article moulé dans lequel une résine souple et isolante (10) et des particules magnétiques (20) sont mélangées. La résine (10) est une résine naturelle, une résine synthétique ou une résine de silicone. En enroulant le filtre antiparasite (1) destiné à un câble, par post-transformation, autour de la périphérie extérieure d'un câble dans lequel des contre-mesures de bruit sont insuffisantes, le bruit produit par le câble peut être réduit à un minimum.
PCT/JP2018/046649 2017-12-21 2018-12-18 Filtre antiparasite destiné à un câble WO2019124406A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017245341A JP2019114611A (ja) 2017-12-21 2017-12-21 ケーブル用ノイズフィルター
JP2017-245341 2017-12-21

Publications (1)

Publication Number Publication Date
WO2019124406A1 true WO2019124406A1 (fr) 2019-06-27

Family

ID=66994721

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/046649 WO2019124406A1 (fr) 2017-12-21 2018-12-18 Filtre antiparasite destiné à un câble

Country Status (2)

Country Link
JP (1) JP2019114611A (fr)
WO (1) WO2019124406A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2022145113A1 (fr) 2020-12-28 2022-07-07

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4812902U (fr) * 1971-06-24 1973-02-13
JPH01283900A (ja) * 1988-05-10 1989-11-15 Murata Mfg Co Ltd 外装成形用複合材料及び外装電子部品
JPH03211906A (ja) * 1990-01-16 1991-09-17 Hitachi Ltd ノイズフィルタ、筒状磁性体およびケーブル
JPH0395606U (fr) * 1990-01-10 1991-09-30
JPH04139797A (ja) * 1990-09-29 1992-05-13 Okaya Electric Ind Co Ltd ノイズ吸収束線バンド
JPH05327265A (ja) * 1992-05-25 1993-12-10 Murata Mfg Co Ltd ノイズ除去フィルター
JPH10275994A (ja) * 1997-03-28 1998-10-13 Nec Corp Ｅｍｉ対策用コア
JPH1174678A (ja) * 1997-08-27 1999-03-16 Tokin Corp ノイズ吸収コア
JP2002025356A (ja) * 2000-07-10 2002-01-25 Oki Electric Cable Co Ltd 広帯域シールドケーブル
JP2006313856A (ja) * 2005-05-09 2006-11-16 Daito Giken:Kk ノイズ低減器具
JP2016207361A (ja) * 2015-04-17 2016-12-08 日立金属株式会社 ノイズ抑制ケーブルの製造方法及び巻き付け補助具

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4812902U (fr) * 1971-06-24 1973-02-13
JPH01283900A (ja) * 1988-05-10 1989-11-15 Murata Mfg Co Ltd 外装成形用複合材料及び外装電子部品
JPH0395606U (fr) * 1990-01-10 1991-09-30
JPH03211906A (ja) * 1990-01-16 1991-09-17 Hitachi Ltd ノイズフィルタ、筒状磁性体およびケーブル
JPH04139797A (ja) * 1990-09-29 1992-05-13 Okaya Electric Ind Co Ltd ノイズ吸収束線バンド
JPH05327265A (ja) * 1992-05-25 1993-12-10 Murata Mfg Co Ltd ノイズ除去フィルター
JPH10275994A (ja) * 1997-03-28 1998-10-13 Nec Corp Ｅｍｉ対策用コア
JPH1174678A (ja) * 1997-08-27 1999-03-16 Tokin Corp ノイズ吸収コア
JP2002025356A (ja) * 2000-07-10 2002-01-25 Oki Electric Cable Co Ltd 広帯域シールドケーブル
JP2006313856A (ja) * 2005-05-09 2006-11-16 Daito Giken:Kk ノイズ低減器具
JP2016207361A (ja) * 2015-04-17 2016-12-08 日立金属株式会社 ノイズ抑制ケーブルの製造方法及び巻き付け補助具

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Publication number Publication date
JP2019114611A (ja) 2019-07-11

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