JP2001167933A - Part for restraining electromagnetic noise - Google Patents

Abstract

PROBLEM TO BE SOLVED: To offer parts for restraining electromagnetic noise for cables which can be attached to a cable easily, without requiring special means for fixation to the cable and will not cause damages to the parts, and which enables downsizing. SOLUTION: An adhesive layer 2 is formed on one side of a plate-shape composite magnetic substance 1, and a cut groove 3 is formed in an approximately center of another side of the substance 1, namely in a center position in longitudinal direction. As a result, the effective length of the other side is set longer than the effective length of the side on which the layer 2 is formed. The magnetic composite body 1 is composed of, for example, a mixture of a ferrite powder and resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic noise suppression component which is attached to a single wire or a plurality of cables of various electronic devices, and suppresses unnecessary electromagnetic waves from leaking from cables and the influence of external unnecessary electromagnetic waves. The present invention relates to an electromagnetic noise suppression component suitable for mounting on a flat cable or the like.

[0002]

2. Description of the Related Art When a digital device or the like is connected with a cable, the cable becomes a pseudo antenna, and electromagnetic noise leaks from the device to the outside, or conversely, unnecessary electromagnetic noise from the outside enters the cable. And may adversely affect the equipment.

[0003] As a countermeasure against electromagnetic noise in such a cable, conventionally, a cylindrical shape shown in FIG.
A method of using a rectangular cylindrical magnetic core and passing a cable through the magnetic core is widely used. In the case of the cylindrical or prismatic magnetic core, the structure requires the magnetic core to be attached to the cable before attaching the cable to the device, so it is impossible to attach the magnetic core after attaching the cable to the device. there were.

In addition to the cylindrical or rectangular magnetic core, the magnetic core is provided with a mounting cover for dividing the magnetic core into two parts and integrating the divided magnetic cores for the purpose of improving the mountability to the cable. Some have been proposed (for example, JP-A-11-273957).

[0005]

However, in the case of a structure in which the magnetic core is divided into two parts, a dedicated cover for attaching the core is required in addition to the magnetic core, so that the cost is high and the thickness of the entire core component is increased. Also, the thickness of the mounting cover increases to increase the thickness, and it has been difficult to cope with miniaturization and thinning of today's electronic devices.

Further, in the case of the above-mentioned cylindrical or rectangular magnetic core or divided core, a slight gap is required between the magnetic core and the cable in order to attach it to the cable. As a result, the magnetic core is mounted on the cable. In this case, since the magnetic core moves on the cable, a device for fixing the magnetic core to the cable is further required.

[0007] Further, with today's electronic equipment becoming mobile, the chances of vibration being applied to the electronic equipment are increasing. Therefore, higher reliability against vibration is required for parts of the electronic equipment. However, since these magnetic cores are generally made of sintered ferrite, there is a problem that the magnetic core is easily broken when the magnetic core is made thin.

Japanese Patent Application Laid-Open No. Hei 11-74678 proposes a noise absorbing core using a composite magnetic material, but requires a clip-like stopper for fixing the core to a flat cable. There is.

In view of the above, the present invention is directed to a cable which can be easily attached to a cable, requires no special measures for fixing to the cable, and has no breakage of parts and can be downsized. It is an object of the present invention to provide a component for suppressing electromagnetic noise.

[0010] Other objects and novel features of the present invention will be clarified in embodiments described later.

[0011]

In order to achieve the above object, an electromagnetic noise suppressing component according to the first aspect of the present invention comprises:
An adhesive layer is formed on a part or the entire surface of a plate-shaped composite magnetic material, and the effective length of the opposite surface of the surface on which the adhesive layer is formed is longer than the surface on which the adhesive layer is formed. Features.

According to a second aspect of the present invention, there is provided an electromagnetic noise suppressing component according to the first aspect, wherein one or more grooves are provided on a surface opposite to the surface on which the adhesive layer is formed, so that the effective reflection surface is provided. It is characterized by having a longer length.

An electromagnetic noise suppressing component according to a third aspect of the present invention is characterized in that, in the second aspect, a groove is provided at a substantially intermediate position on a surface opposite to the surface on which the adhesive layer is formed.

According to a fourth aspect of the present invention, there is provided an electromagnetic noise suppressing component according to the second or third aspect, wherein the groove is a cut groove.

According to a fifth aspect of the present invention, in the electromagnetic noise suppressing component according to the second or third aspect, the cross section of the groove has a polygonal groove shape.

An electromagnetic noise suppressing component according to a sixth aspect of the present invention is characterized in that, in the second or third aspect, the groove has a curved surface.

According to a seventh aspect of the present invention, there is provided an electromagnetic noise suppressing component according to the first, second, third, fourth, fifth or sixth aspect, wherein the composite magnetic body has a single-layer or multilayer structure. .

An electromagnetic noise suppressing component according to an eighth aspect of the present invention is the electromagnetic noise suppressing component according to the first, second, third, fourth, fifth, sixth or seventh aspect of the present invention, wherein It is characterized in that sintered ferrite is attached.

According to a ninth aspect of the present invention, there is provided the electromagnetic noise suppressing component according to the first, second, third, fourth, fifth, sixth, seventh or eighth aspect, wherein the magnetic material constituting the composite magnetic body is ferrite powder or ferrite powder. It is characterized by being a soft magnetic metal powder.

According to a tenth aspect of the present invention, in the electromagnetic noise suppressing component according to the ninth aspect, the soft magnetic metal powder has a flat shape.

An electromagnetic noise suppressing component according to claim 11 of the present invention is the electromagnetic noise suppressing component according to any one of claims 1 to 10, wherein the base material constituting the magnetic material is at least one of a thermoplastic resin, a thermoplastic elastomer, and a synthetic rubber. It is characterized by being comprised from.

According to a twelfth aspect of the present invention, there is provided an electromagnetic noise suppressing component according to any one of the first to eleventh aspects, wherein the adhesive layer is a double-sided adhesive tape.

According to a thirteenth aspect of the present invention, there is provided an electromagnetic noise suppressing component according to any one of the first to eleventh aspects, wherein the adhesive layer is a single adhesive.

[0024]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an electromagnetic noise suppressing component according to the present invention.

A first embodiment of the electromagnetic noise suppressing component according to the present invention will be described with reference to FIGS. In these figures, the electromagnetic noise suppressing component 10 forms an adhesive layer 2 on one surface of a plate-shaped composite magnetic body 1 and forms a cut groove 3 at a substantially central portion (an intermediate position in a longitudinal direction) of the other surface. It was done. The cut groove 3 traverses the plate-shaped composite magnetic body 1 in the lateral direction.

The composite magnetic body 1 is made of, for example, Mn-Mg-
It is composed of a mixture (molded body) of Zn ferrite powder and polyvinyl chloride resin (thermoplastic resin), and has a configuration in which the ferrite content is 78% by weight.

The proportion of the ferrite powder is not particularly limited, but is preferably not more than 80% by weight in view of the strength and production of the composite magnetic material, and is preferably not less than 50% by weight in terms of noise suppression performance. . In the region where the mixing ratio of the ferrite powder exceeds 80% by weight, the fluidity of the resin is remarkably deteriorated, so that the dimensional accuracy at the time of molding is deteriorated, and a problem is caused in the strength.
If the content is less than 0% by weight, the magnetic properties are remarkably deteriorated, so that desired properties cannot be obtained, which is not preferable. In addition, regarding the types of ferrite powder, Mn-Zn ferrite, Ni-
Zn ferrite and hexagonal ferrite can also be used depending on the desired frequency band. Various materials having flexibility, such as various thermoplastic resins, thermoplastic elastomers, and synthetic rubbers, can also be used for the base material (binding material) constituting the composite magnetic body.

In this embodiment, a double-sided adhesive tape is used as the adhesive layer 2. The pressure-sensitive adhesive layer 2 is not limited to a double-sided pressure-sensitive adhesive tape, and may be formed by directly applying a pressure-sensitive adhesive to one surface of the plate-shaped composite magnetic body 1. Further, the application area may be limited to the entire surface of one surface of the composite magnetic body 1 or only a required portion of one surface.

FIGS. 2 and 3 show a state where the electromagnetic noise suppressing component 10 in the developed state of FIG. As shown in FIG. 2, the surface of the electromagnetic noise suppressing component 10 on the side of the adhesive layer 2 is set to the cable 5 side, attached to the cable 5, the composite magnetic body 1 is bent from the cut groove 3, and the cable 5 is sandwiched by the adhesive layer 2. Then, the electromagnetic noise suppressing component 10 is fixed to the cable 5.

FIG. 4 shows an electromagnetic noise suppressing component (40 mm in length, 20 mm in width, and
Thickness 1 mm, mixing ratio of Mn-Mg-Zn ferrite powder 7
8% by weight) is a measurement result of frequency characteristics of impedance when attached to a flat cable having a width of 18 mm and a thickness of 0.5 mm. Ni-Z above about 300MHz
It can be seen that it has performance equal to or higher than that of the ferrite core which is an n-type ferrite sintered body.

According to the first embodiment, the following effects can be obtained.

(1) Since the adhesive layer 2 is formed on a part or the entire surface of the plate-shaped composite magnetic body 1 and the adhesive layer 2 is integrated, the flat cable 5
Very easy to fix to.

(2) The effective length of the opposite surface of the plate-shaped composite magnetic body 1 on which the adhesive layer 2 is formed is the surface on which the adhesive layer 2 is formed by providing the cut grooves 3. The composite magnetic body 1 is easy to bend, the cable 5 can be sandwiched and mounted, and the electromagnetic noise suppressing component 10 is provided. The attachment is very easy and the fixing strength can be sufficiently increased. The cut groove 3 can be formed at low cost.

(3) If the pressure-sensitive adhesive layer 2 is made of a double-sided pressure-sensitive adhesive tape, the pressure-sensitive adhesive layer 2 can be covered with release paper before use, which is convenient for handling.

(4) The plate-like composite magnetic body 1 is a mixture (molded body) of ferrite powder and a resin as a base material. As can be seen from FIG. It has performance equal to or higher than that of a certain ferrite core, and when used in an electronic device having a high operating frequency, a good effect of suppressing electromagnetic noise can be obtained.

(5) The composite magnetic body 1, which is a mixture of a ferrite powder and a resin, is more flexible than a ferrite core made of sintered ferrite, and is less likely to crack or chip even when thin. The size and thickness can be reduced. Therefore, the present invention can be applied to small portable electronic devices. Also,
The possibility of breakage due to vibration is also small.

FIG. 5 shows a second embodiment of the present invention.
In this case, the electromagnetic noise suppressing component 20 is formed by forming the adhesive layer 2 on one surface of the plate-shaped composite magnetic body 1 and forming a V-groove 1 as a cut groove at a substantially central portion (an intermediate position in the longitudinal direction) of the other surface.
3 is formed. The V groove 13 is a plate-shaped composite magnetic body 1
Is traversing in the short direction. Other configurations are the same as those of the first
This is the same as the embodiment.

In the second embodiment, it is possible to form the V-shaped groove 13 as a notch groove at the same time when the composite magnetic material is formed. Other functions and effects are the same as those of the first embodiment.

FIG. 6 shows a third embodiment of the present invention.
In this case, the electromagnetic noise suppressing component 30 is formed by forming the adhesive layer 2 on one surface of the plate-shaped composite magnetic body 21 and forming a concave as a groove having a curved surface at a substantially central portion (an intermediate position in the longitudinal direction) of the other surface. The groove 23 (for example, a U groove, a semicircular groove) is formed. The concave groove 23 traverses the plate-shaped composite magnetic body 21 in the lateral direction.

The composite magnetic body 21 is made of, for example, a mixture (formed body) of an iron alloy powder (a flat powder of an Fe—Si—Cr alloy) as a soft magnetic metal powder and EPDM rubber (a kind of synthetic rubber). ) Consisting of 75% by weight of iron alloy powder by weight
Configuration.

The proportion of the iron alloy powder is not particularly limited, but is preferably not more than 80% by weight in view of the strength and production of the composite magnetic material, and is not less than 50% by weight in terms of noise suppression performance. Is desirable. In the region where the mixing ratio of the iron alloy powder exceeds 80% by weight, the fluidity of the resin is remarkably deteriorated, so that the dimensional accuracy at the time of molding is deteriorated and a problem also occurs in the strength. If it is less than 50% by weight, the magnetic properties are remarkably deteriorated, so that the desired properties cannot be obtained.

The other structure is the same as that of the first embodiment.

FIG. 7 shows an electromagnetic noise suppressing component according to the third embodiment (composite magnetic material when expanded, length 40 mm, width 20 mm, thickness 1 mm, iron alloy powder (Fe-Si-Cr alloy) Is a measurement result of the frequency characteristics of impedance when a mixing ratio of 75% by weight of the flat powder is attached to a flat cable having a width of 18 mm and a thickness of 0.5 mm. About 150M
It can be seen that it has a performance far exceeding that of a ferrite core, which is a Ni—Zn-based ferrite sintered body, at Hz or higher.

In the third embodiment, since the concave groove 23 having a curved surface is provided substantially at the center of the plate-like composite magnetic body 21, the composite magnetic body 21 is easily bent at the concave groove 23, and the flat cable 5 Installation of the device becomes easy. Further, by using a flat powder of an Fe-Si-Cr alloy as the soft magnetic metal powder, an electromagnetic noise suppression effect superior to that of sintered ferrite can be obtained in a frequency region of about 150 MHz or more.

A fourth embodiment of the present invention will be described with reference to FIGS. In these figures, an electromagnetic noise suppressing component 40 is formed by forming an adhesive layer 2 on one surface of a plate-shaped composite magnetic body 31 and forming a concave groove 33 as a groove having a curved surface on the other surface.
(For example, a U-shaped groove, a semi-circular groove). The concave groove 33 crosses the plate-shaped composite magnetic body 31 in the lateral direction.

The plate-shaped composite magnetic body 31 is made of a mixture of the same iron alloy powder (a flat powder of an Fe—Si—Cr alloy) and EPDM rubber as in the third embodiment, and has a weight ratio of the iron alloy powder. The alloy powder has a composition of 75% by weight. As the adhesive layer 2, a double-sided adhesive tape without a base material is used.

FIGS. 9 and 10 show a state in which the electromagnetic noise suppressing component 40 in the developed state of FIG. 8 is attached to the harness 6 in which a plurality of cables are bundled. As shown in these drawings, the electromagnetic noise suppressing component 40 is attached to the harness 6 with the surface on the side of the adhesive layer 2 facing the harness 6, the composite magnetic body 31 is bent by the plurality of grooves 33, and the harness 6 is attached to the adhesive layer. The electromagnetic noise suppressing component 40 is fixed to the harness 6 by being bundled by being surrounded by 2.

FIG. 11 shows an information processing apparatus having a harness composed of ten cables each having a diameter of 1.5 mm, and an electromagnetic noise suppressing component 40 of the fourth embodiment (a composite magnetic material having a length of 35 mm when unfolded, It is a measurement result of electromagnetic radiation noise when a width of 20 mm, a thickness of 3 mm, and a mixing ratio of iron alloy powder (flat powder of an Fe-Si-Cr alloy) of 75% by weight are attached. It can be seen that by attaching the electromagnetic noise suppressing component 40 to the harness, radiation noise of up to 5 dB at 100 to 200 MHz can be reduced.

According to the fourth embodiment, the composite magnetic body 31 in which the plurality of concave grooves 33 are formed on the opposite surface of the adhesive layer 2
Since it is easy to bend, it can be easily wound around the outer periphery of the harness 6 in which the cables are bundled. Therefore, a plurality of cables can be bundled and fixed by the electromagnetic noise suppressing component 40, and the effect of reducing radiation noise can be obtained.

FIG. 12 shows a fifth embodiment of the present invention. In this case, the electromagnetic noise suppressing component 50 uses a plate-shaped composite magnetic body 41 having a multilayer structure. That is, the lower layer 41a of the composite magnetic body 41 is made of a mixture of a resin and an iron alloy powder such as a flat powder of an Fe—Si—Cr alloy.
b is a mixture of a ferrite powder and a resin, and the upper and lower layers are integrated by heat compression or the like. Other configurations are the same as those of the above-described first or third embodiment.

According to the fifth embodiment, it is possible to increase the impedance in a desired frequency band by appropriately combining the types of soft magnetic powder.

FIGS. 13 and 14 show a sixth embodiment of the present invention. In these figures, the electromagnetic noise suppressing component 60 is formed by forming the adhesive layer 2 on one surface of a plate-shaped composite magnetic body 51 and forming a groove having a curved surface at a substantially central portion (an intermediate position in the longitudinal direction) of the other surface. Are formed, and the thin plate-shaped sintered ferrite 71 is partially adhered to the adhesive layer 2 side of the composite magnetic body 51. The concave groove 53 traverses the plate-shaped composite magnetic body 51 in the lateral direction. In addition, the adhesive layer 2 is exposed except for the portion where the sintered ferrite 71 is attached, and can be fixed to the flat cable 5.

The composition of the composite magnetic body 51 may be the same as in the first or third embodiment.

FIG. 14 shows a state where the electromagnetic noise suppressing component 60 in the expanded state of FIG. As shown in FIG. 14, the surface of the electromagnetic noise suppressing component 60 on the side of the adhesive layer 2 is set to the cable 5 side, attached to the cable 5, and the composite magnetic body 1 is bent from the concave groove 53,
Is sandwiched between the adhesive layers 2 to fix the electromagnetic noise suppressing component 60 to the cable 5. At this time, the cable 5 is doubly sandwiched between the sintered ferrite 71 and the outer composite magnetic body 51.

Further, since the sintered ferrite 71 is surrounded by the composite magnetic body 51 having flexibility, the composite magnetic body functions as a buffer for the sintered ferrite, and as a result, the sintered ferrite is damaged. It becomes difficult to do.

Further, in a high frequency region of several hundred MHz or more, the impedance is increased by the composite magnetic body 51,
In the lower frequency range, the impedance can be increased by the sintered ferrite 71, and the electromagnetic noise suppression range can be broadened.

FIG. 15 shows an electromagnetic noise suppressing component according to the sixth embodiment (the composite magnetic body is composed of a mixture of Mn-Mg-Zn ferrite powder and polyvinyl chloride resin, and the ferrite powder is expressed in weight ratio. With a configuration of 78% by weight, the composite magnetic material at the time of development is 42 mm long, 20 mm wide and 0.6 mm thick,
Sintered ferrite is 17mm long, 20mm wide, 0.4mm thick
Ni-Zn ferrite), width 18mm and thickness 0.5mm
7 shows the measurement results of the frequency characteristics of the impedance when attached to the flat cable of FIG. As can be seen from the comparison with the first embodiment, it is possible to increase the impedance in a lower frequency band than when only the composite magnetic material is used.

In the sixth embodiment, an adhesive layer may be provided also on the cable mounting surface of the sheet-shaped sintered ferrite 71.

In each embodiment, ferrite powder or flat powder of Fe—Si—Cr alloy is exemplified as the soft magnetic powder of the composite magnetic material. Iron alloy powder may be used. In each embodiment, the base material is made of polyvinyl chloride resin or EPD.
Although the M rubber is exemplified, various materials having flexibility such as various thermoplastic resins, thermoplastic elastomers, and synthetic rubbers can be used.

The grooves formed in the plate-shaped composite magnetic body may be any as long as they make it easy to bend the plate-shaped composite magnetic body. Square grooves or the like can also be employed.

Further, a double-sided pressure-sensitive adhesive tape has been exemplified as the pressure-sensitive adhesive layer formed on the composite magnetic material. However, the double-sided pressure-sensitive adhesive tape may have a base material or may have no base material. Alternatively, the pressure-sensitive adhesive may be directly applied to a part or the whole of one surface of the composite magnetic body to form the pressure-sensitive adhesive layer.

Although the embodiments of the present invention have been described above, it is obvious to those skilled in the art that the present invention is not limited to the embodiments and various modifications and changes can be made within the scope of the claims. There will be.

[0063]

As described above, according to the electromagnetic noise suppressing component of the present invention, the following effects can be obtained.

(1) The cable is sandwiched or wound around a plate-shaped composite magnetic body having an adhesive layer on one side, and can be attached to the cable even after the cable is attached to the electronic device.

(2) A special mounting case for mounting the magnetic body is not required, and since there is no mounting case, the thickness can be reduced accordingly.

(3) Since the plate-like composite magnetic material is fixed to the cable by using the adhesive layer on one side, there is no need for fixtures (such as stoppers) for fixing to the cable.

(4) A noise suppressing effect can be exhibited at a high frequency (GHz band).

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment of an electromagnetic noise suppression component according to the present invention in an unfolded state.

FIG. 2 is a perspective view when a flat cable is attached.

FIG. 3 is a front view at the time of attachment.

FIG. 4 is a graph showing frequency characteristics of impedance when the electromagnetic noise suppressing component shown in the first embodiment is mounted on a flat cable, in comparison with the case of a sintered ferrite core.

FIG. 5 is a perspective view showing a second embodiment of the present invention.

FIG. 6 is a perspective view showing a third embodiment of the present invention.

FIG. 7 is a graph showing frequency characteristics of impedance when the electromagnetic noise suppressing component described in the third embodiment is mounted on a flat cable, in comparison with the case of a sintered ferrite core.

FIG. 8 is a perspective view of a fourth embodiment of the present invention in an unfolded state.

FIG. 9 is a perspective view when it is attached around a harness.

FIG. 10 is a front view of the same.

FIG. 11 is a graph showing measurement results of electromagnetic radiation noise when the electromagnetic noise suppressing component shown in the fourth embodiment is mounted on a harness, in comparison with a case where there is no electromagnetic noise suppressing component.

FIG. 12 is a perspective view showing a fifth embodiment of the present invention.

FIG. 13 is a perspective view of a sixth embodiment of the present invention in an unfolded state.

FIG. 14 is a front view when a flat cable is attached.

FIG. 15 is a graph showing frequency characteristics of impedance when the electromagnetic noise suppressing component shown in the sixth embodiment is attached to a flat cable, in comparison with the first embodiment.

FIG. 16 is a perspective view showing an example of a conventional noise suppression component.

FIG. 17 is a perspective view showing another example of a conventional noise suppression component.

[Explanation of symbols]

1, 21, 31, 41, 51 Composite magnetic material 2 Adhesive layer 3 Cut groove 5 Flat cable 6 Harness 10, 20, 30, 40, 50, 60 Electromagnetic noise suppression component 13 V groove 23, 33, 53 Groove groove 71 Ferrite

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takashi Tanaka 1-13-1 Nihonbashi, Chuo-ku, Tokyo TDC Corporation F-term (reference) 5E070 AA01 AA20 AB01 BA11 BA16 BB03 CA04 CA07 DA04 5E321 BB32 BB53 BB51 BB53 CC06 CC16 GG09

Claims (13)

[Claims] An adhesive layer is formed on a part or the entire surface of a plate-shaped composite magnetic material, and the effective length of a surface opposite to the surface on which the adhesive layer is formed is the surface on which the adhesive layer is formed. An electromagnetic noise suppression component characterized by being longer. 2. The electromagnetic device according to claim 1, wherein one or more grooves are provided on a surface opposite to the surface on which the adhesive layer is formed to increase an effective length of the reflection surface. Noise suppression components. 3. The electromagnetic noise suppression component according to claim 2, wherein a groove is provided in a substantially central portion of a surface opposite to a surface on which the adhesive layer is formed. 4. The electromagnetic noise suppression component according to claim 2, wherein the groove is a notch groove. 5. The electromagnetic noise suppressing component according to claim 2, wherein a cross section of the groove has a polygonal groove shape. 6. The electromagnetic noise suppressing component according to claim 2, wherein the groove has a curved surface. 7. The electromagnetic noise suppression component according to claim 1, wherein the composite magnetic body has a single-layer or multilayer structure. 8. The composite magnetic material, wherein a plate-shaped sintered ferrite is attached to a surface of the composite magnetic material on which the adhesive layer is formed. The described electromagnetic noise suppression component. 9. The method according to claim 1, wherein the magnetic material constituting the composite magnetic body is a ferrite powder or a soft magnetic metal powder. Electromagnetic noise suppression parts. 10. The electromagnetic noise suppressing component according to claim 9, wherein the soft magnetic metal powder has a flat shape. 11. The composite magnetic material according to claim 1, wherein the base material comprises at least one of a thermoplastic resin, a thermoplastic elastomer, and a synthetic rubber.
11. The electromagnetic noise suppressing component according to any one of claims 10 to 10. 12. The electromagnetic noise suppression component according to claim 1, wherein the adhesive layer is a double-sided adhesive tape. 13. The electromagnetic noise suppression component according to claim 1, wherein the adhesive layer is a single adhesive.