JP2017204382A - Noise suppression cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noise suppression cable capable of preventing positional deviation of a magnetic tape arranged with appropriate intervals.SOLUTION: A noise suppression cable 10 includes: an insulated wire 3 obtained by coating the outer periphery of a conductor wire with an insulator; a shield layer 6 provided on the outer periphery of the insulated wire 3; a plurality of magnetic tape layers 8 provided on the outer periphery of the shield layer 6 at predetermined intervals in a cable longitudinal direction; a resin tape layer 5B for insulating the shield layer 6 and a plurality of magnetic tape layers 8; and a double-sided adhesive layer 7A for fixing the plurality of magnetic tape layers 8 to the resin tape layer 5B.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a noise suppression cable.

  Conventionally, a noise suppression cable in which a magnetic tape is wound around an insulated wire has been proposed (see, for example, Patent Documents 1 and 2).

  In this noise suppression cable, a magnetic metal tape having a predetermined width (also referred to as a magnetic tape) is wound around an outer periphery of an insulated wire in which a conductor wire is covered with an insulator with a predetermined interval in the cable longitudinal direction.

  In general, a magnetic tape is manufactured by slitting, that is, by continuously cutting a long rolled material having a large width at a constant width and winding it on a roll or a reel. According to the conventional noise suppression cable, the noise suppression effect is controlled by the tape length and the tape width. Further, the flexibility of the cable is improved by reducing the tape width of the magnetic tape, dividing the magnetic tape into a plurality of blocks, and arranging them at appropriate intervals.

JP 2002-25356 A Japanese Patent Laying-Open No. 2015-198840

  Magnetic tapes arranged at appropriate intervals need to be fixed so that the arrangement positions can be maintained.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a noise suppression cable that can prevent displacement of magnetic tapes arranged with appropriate intervals.

  In order to achieve the above object, the present invention provides the following noise suppression cable.

[1] An insulated wire in which an outer periphery of a conductor wire is covered with an insulator, a shield layer provided on the outer periphery of the insulated wire, and an outer periphery of the shield layer provided at predetermined intervals along the longitudinal direction of the cable A plurality of magnetic tape layers; a resin tape layer for insulating the shield layer and the plurality of magnetic tape layers; and a double-sided adhesive layer for fixing the plurality of magnetic tape layers to the resin tape layer. Noise suppression cable.
[2] The noise suppression cable according to [1], wherein the double-sided adhesive layer is provided in a long shape along a cable longitudinal direction.
[3] The noise suppressing cable according to [2], wherein the long double-sided adhesive layer has a width in the cable circumferential direction of 3 mm to 25 mm.
[4] The noise suppressing cable according to [1], wherein the double-sided adhesive layers are provided at predetermined intervals along the cable longitudinal direction.
[5] The noise suppression cable according to any one of [1] to [4], wherein the double-sided adhesive layer is made of double-sided tape.
[6] The noise suppression cable according to any one of [1] to [4], wherein the double-sided adhesive layer is made of an adhesive.

  ADVANTAGE OF THE INVENTION According to this invention, the noise suppression cable which can prevent the position shift of the magnetic tape arrange | positioned with a suitable space | interval can be provided.

FIG. 1 is a front view showing a schematic configuration of a noise suppression cable according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the noise suppression cable shown in FIG. FIG. 3 is a front view showing a schematic configuration of a noise suppression cable according to the second embodiment of the present invention. 4 is a cross-sectional view of the noise suppression cable shown in FIG. 5A to 5D are diagrams illustrating an example of a manufacturing process of the noise suppression cable according to the first embodiment of the present invention. 6A to 6C are diagrams illustrating an example of a manufacturing process of the noise suppression cable according to the second embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each figure, about the component which has the substantially same function, the same code | symbol is attached | subjected and the duplicate description is abbreviate | omitted.

[First Embodiment]
FIG. 1 is a front view showing a schematic configuration of a noise suppression cable according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the noise suppression cable shown in FIG. In FIG. 1, the inclusion 4 and the resin tape layers 5A and 5C are not shown.

The noise suppression cable 10 includes a plurality (three in the present embodiment) of insulated wires 3 in which the outer periphery of the conductor wire 1 is covered with an insulator 2, and inclusions made of paper or the like around the plurality of insulated wires 3. A resin tape layer 5A formed by winding a resin tape with 4 interposed therebetween, a shield layer 6 provided on the outer periphery of the resin tape layer 5A, a resin tape layer 5B provided on the outer periphery of the shield layer 6, a magnetic tape layer 8 of resin tape layer 5B predetermined width W ₈ of provided with a plurality of the cable in the longitudinal direction with a predetermined gap D on the outer periphery of a plurality of magnetic tape layers 8 for fixing the resin tape layer 5B The double-sided adhesive layer 7A, the resin tape layer 5B, the double-sided adhesive layer 7A, the resin tape layer 5C provided on the outer periphery of the plurality of magnetic tape layers 8, and the sheath 9 as an insulating protective layer made of resin or the like. .

(Insulated wire 3)
The insulated wire 3 transmits power or a signal having a frequency of 100 kHz to 1 MHz, for example. In addition, although the insulated wire 3 was made into multiple in this Embodiment, one may be sufficient. The insulated wire 3 may be a twisted pair wire that transmits a differential signal.

(Resin tape layers 5A-5C)
The resin tape layer 5 </ b> A is formed by winding the resin tape around the plurality of insulated wires 3 with the inclusions 4 interposed therebetween in the longitudinal direction of the cable.

The resin tape layer 5B is for insulating the shield layer 6 and the plurality of magnetic tape layers 8, and is formed by winding the resin tape around the outer circumference of the shield layer 6 in the cable longitudinal direction. Since it is only necessary to insulate the shield layer 6 and the plurality of magnetic tape layers 8, the resin tape layer 5 </ b> B is formed on the outer periphery of the shield layer 6 as long as the shield layer 6 and the plurality of magnetic tape layers 8 are not directly in contact with each other. It may not be provided on the entire circumference. For example, a resin tape having a predetermined width W ₈ mm to W ₈ + X mm (for example, X = 1 to 3) having a predetermined interval D−2 X mm to D mm in accordance with the installation location of the magnetic tape layer 8 A plurality may be provided in the longitudinal direction. However, the resin tape layer 5B must be fixed to the outer periphery of the shield layer 6 so as not to be displaced.

  The resin tape layer 5C is formed by winding the resin tape around the outer periphery of the resin tape layer 5B, the double-sided adhesive layer 7A, and the magnetic tape layer 8 in the cable longitudinal direction. Or it is good also as a structure which affixes the resin tape layer 5C which consists of a cellophane tape along these on the double-sided adhesive layer 7A and the magnetic tape layer 8, as shown to FIG. 5C and 5D mentioned later.

  As the resin tape constituting the resin tape layers 5A to 5C, for example, a tape made of a resin such as polyethylene terephthalate (PET) or polypropylene resin can be used.

(Shield layer 6)
The shield layer 6 is formed, for example, by braiding a copper wire and connected to the ground. The shield layer 6 may be a tape with a conductor wrapped around it, or a metal pipe such as a copper pipe.

(Double-sided adhesive layer 7A)
The double-sided adhesive layer 7A is provided in a long shape along the cable longitudinal direction. In the long double-sided adhesive layer 7A, the width W _{7A in} the cable circumferential direction is preferably 3 mm or more and 25 mm or less, and more preferably 5 mm or more and 20 mm or less. A plurality of long double-sided adhesive layers 7A may be provided along the longitudinal direction of the cable, but preferably 1 or 2 and as shown in FIGS. Is more preferable. In the case where a plurality of cables are provided, it is preferable that the cables are provided at a plurality of locations at substantially equal intervals in the cable circumferential direction. The double-sided adhesive layer 7A is preferably made of, for example, a double-sided tape. The double-sided adhesive layer 7A may be composed of an adhesive, but is preferably a type of adhesive that does not drip after application to the outer periphery of the resin tape layer 5B.

(Magnetic tape layer 8)
Magnetic tape layer 8 is formed by winding the transverse magnetic tape having a width W ₈ of the outer periphery of the resin tape layer 5B. Not only one turn may be wound but two or more turns may be wound. Width _{W 8,} for example preferably 5mm or 50mm or less. The distance D between the magnetic tape layers 8 is preferably 5 mm or more and 50 mm or less, for example. The magnetic tape includes, for example, a plurality of magnetic bodies extending in a direction (winding direction) orthogonal to the width direction, and a bonding sheet that joins the plurality of magnetic bodies. In addition, the magnetic tape may be comprised from the single magnetic body. The magnetic body is preferably cut out from the rolled material so that the width direction of the magnetic tape is the rolling direction, and the magnetic permeability in the direction orthogonal to the width direction is greater than the permeability in the width direction. In other words, the magnetic body preferably has different magnetic characteristics (induced magnetic anisotropy) in the width direction and the direction orthogonal to the width direction.

  The magnetic material constituting the magnetic tape is preferably made of a soft magnetic material having a small coercive force and a high magnetic permeability in order to suppress electromagnetic wave noise. Examples of soft magnetic materials include amorphous alloys such as Co-based amorphous alloys and Fe-based amorphous alloys, ferrites such as Mn-Zn based ferrite, Ni-Zn based ferrite, Ni-Zn-Cu based ferrite, and Fe-Ni based alloys ( Permalloy), soft magnetic metals such as Fe-Si-Al alloys (Sendust), Fe-Si alloys (silicon steel), and the like can be used.

  The magnetic tape layer 8 may be composed of two magnetic tapes joined by a joining tape as disclosed in the aforementioned Japanese Patent Application Laid-Open No. 2015-198840.

(Manufacturing process of noise suppression cable)
5A to 5D are diagrams illustrating an example of a manufacturing process of the noise suppression cable according to the first embodiment of the present invention. 5A to 5D, the inclusion 4 and the sheath 9 are not shown.

Up to the step of providing the resin tape layer 5B on the outer periphery of the shield layer 6, it can be manufactured in the same manner as a known cable manufacturing method. After the resin tape layer 5B is provided, a double-sided adhesive layer 7A is provided by sticking a double-sided tape from which only one side of the release paper has been peeled off onto the resin tape layer 5B in the cable longitudinal direction (FIG. 5A). Thereafter, peel off the release paper on the other surface of the double-sided tape to expose the adhesive surface, the magnetic tape of the resin tape layer 5B and the double-sided adhesive layer 7A periphery to the width W ₈ of the wound lateral spacing of the cable in the longitudinal direction A plurality of magnetic tape layers 8 are provided by winding D at a plurality of positions with D (only one magnetic tape layer 8 is shown in FIG. 5B). In providing the double-sided adhesive layer 7A, a double-sided tape from which the double-sided release paper has been peeled off may be attached to the resin tape layer 5B. Thereafter, the resin tape is wound around the magnetic tape layer 8 to provide the resin tape layer 5C, and further the resin tape is pasted onto the double-sided adhesive layer 7A to provide the resin tape layer 5C (in no particular order) (FIGS. 5C and 5D). Then, the noise suppression cable 10 is obtained by covering a sheath 9 (not shown).

(Effect of this embodiment)
According to the present embodiment, the following effects can be obtained.
(1) Since the double-sided adhesive layer 7A is provided, it is possible to provide the noise suppression cable 10 capable of preventing the positional deviation of the magnetic tape layer 8 arranged with an appropriate interval.
(2) Since the process of providing the long double-sided adhesive layer 7A in the longitudinal direction of the cable is easier than the process of providing the double-sided adhesive layer 7B in the second embodiment to be described later, the processing speed Therefore, it is possible to provide a method for manufacturing a noise suppression cable that is excellent in mass productivity.
(3) Since the magnetic tape layer 8 having a predetermined width is provided in the cable longitudinal direction with a predetermined interval, the flexibility is superior to the case where the magnetic tape layer is provided over the entire cable longitudinal direction. Is obtained.

[Second Embodiment]
FIG. 3 is a front view showing a schematic configuration of a noise suppression cable according to the second embodiment of the present invention. 4 is a cross-sectional view of the noise suppression cable shown in FIG. In FIG. 3, the inclusion 4 and the resin tape layers 5A and 5C are not shown.

  This noise suppression cable 20 is different from the noise suppression cable 10 according to the first embodiment in the configuration of the double-sided adhesive layer. The noise suppression cable 20 includes a double-sided adhesive layer 7B in place of the double-sided adhesive layer 7A of the noise suppression cable 10.

(Double-sided adhesive layer 7B)
The double-sided adhesive layer 7B is provided at predetermined intervals along the cable longitudinal direction. The double-sided adhesive layer 7B is formed by horizontally winding a double-sided tape having a width W _7B around the outer periphery of the resin tape layer 5B. The width W _7B may be thicker than the width W ₈ of the magnetic tape layer 8 as shown in FIG. 3, or may be narrower than the width W ₈ of the magnetic tape layer 8 as shown in FIG. 6B. it is preferably substantially equal to the width _{W 8} of the tape layers 8, for example 3mm or 55mm or less. The interval between the double-sided adhesive layers 7B is preferably, for example, 3 mm or more and 55 mm or less. The double-sided adhesive layer 7B is preferably made of double-sided tape, but may be made of an adhesive. The adhesive is preferably an adhesive that does not drip after being applied to the outer periphery of the resin tape layer 5B.

(Manufacturing process of noise suppression cable)
6A to 6C are diagrams illustrating an example of a manufacturing process of the noise suppression cable according to the second embodiment of the present invention. 6A to 6C, the inclusion 4 and the sheath 9 are not shown.

Up to the step of providing the resin tape layer 5B on the outer periphery of the shield layer 6, it can be manufactured in the same manner as a known cable manufacturing method. After the resin tape layer 5B is provided, the double-sided tape from which only the single-sided release paper has been peeled is horizontally wound around the outer periphery of the resin tape layer 5B, and is wound and pasted at a plurality of positions with a predetermined interval in the cable longitudinal direction. A plurality of double-sided adhesive layers 7B are provided (only one double-sided adhesive layer 7B is shown in FIG. 6A). Thereafter, peel off the release paper on the other surface of the double-sided tape to expose an adhesive surface, a magnetic tape of the resin tape layer 5B and the double-sided adhesive layer 7B periphery to the width W ₈ of the wound lateral spacing of the cable in the longitudinal direction A plurality of magnetic tape layers 8 are provided by opening D at a plurality of locations (only one magnetic tape layer 8 is shown in FIG. 6B). In providing the double-sided adhesive layer 7B, a double-sided tape from which the double-sided release paper has been peeled off may be attached to the resin tape layer 5B. Thereafter, a resin tape is wound around the magnetic tape layer 8 to provide the resin tape layer 5C (FIG. 6C). Then, the noise suppression cable 20 is obtained by covering a sheath 9 (not shown).

(Effect of this embodiment)
According to the present embodiment, the following effects can be obtained.
(1) Since the double-sided adhesive layer 7B is provided, it is possible to provide the noise suppression cable 20 that can prevent the positional deviation of the magnetic tape layer 8 arranged with an appropriate interval.
(2) Since the magnetic tape layer 8 having a predetermined width is provided in the cable longitudinal direction with a predetermined interval, the flexibility is superior to the case where the magnetic tape layer is provided over the entire cable longitudinal direction. Is obtained.

  The embodiments of the present invention are not limited to the above-described embodiments, and various embodiments are possible. Further, it is possible to omit or change some of the constituent elements of the above-described embodiment within a range not changing the gist of the present invention. For example, the inclusion 4 may be omitted if there is no problem in winding the resin tape around the plurality of insulated wires 3.

DESCRIPTION OF SYMBOLS 10, 20: Noise suppression cable 1: Conductor wire, 2: Insulator, 3: Insulated wire, 4: Inclusion 5A-5C: Resin tape layer, 6: Shield layer, 7A-7B: Double-sided adhesive layer 8: Magnetic tape Layer 9: sheath

Claims (6)

An insulated wire in which the outer periphery of the conductor wire is covered with an insulator;
A shield layer provided on the outer periphery of the insulated wire;
A plurality of magnetic tape layers provided at predetermined intervals along the cable longitudinal direction on the outer periphery of the shield layer;
A resin tape layer for insulating the shield layer and the plurality of magnetic tape layers;
A noise suppression cable comprising a double-sided adhesive layer for fixing the plurality of magnetic tape layers to the resin tape layer.   The noise suppression cable according to claim 1, wherein the double-sided adhesive layer is provided in a long shape along the cable longitudinal direction.   The noise suppression cable according to claim 2, wherein the long double-sided adhesive layer has a width in the cable circumferential direction of 3 mm or more and 25 mm or less.   The noise suppressing cable according to claim 1, wherein the double-sided adhesive layers are provided at predetermined intervals along the cable longitudinal direction.   The noise suppression cable according to any one of claims 1 to 4, wherein the double-sided adhesive layer is made of double-sided tape. The noise suppression cable according to any one of claims 1 to 4, wherein the double-sided adhesive layer is made of an adhesive.

Images