JP3871929B2 - Electromagnetic shield structure construction method and electromagnetic shield structure base - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for constructing an electromagnetic shield structure for imparting electromagnetic shielding performance to walls, ceilings, and floors.
[0002]
[Prior art]
Conventionally, an electromagnetic shield structure base has been configured by attaching a gypsum board having electromagnetic shielding performance to a wall base or ceiling base of a room, for example, a wall base such as a stud or a ceiling base such as a field edge.
[0003]
[Problems to be solved by the invention]
However, the gypsum board having the electromagnetic shielding performance is very expensive compared to a normal gypsum board because carbon or the like as a conductive material is mixed or a conductive mesh or the like is embedded. Moreover, although it attaches so that the edge parts of each gypsum board which has the said electromagnetic shielding performance may be faced | matched, a clearance gap arises in this facet part. If there is such a gap, electromagnetic waves leak from the gap and the electromagnetic shielding performance deteriorates. For this reason, it is necessary to fill this gap with a conductive putty. This conductive putty is also very expensive. Therefore, the electromagnetic shielding structure base using the gypsum board having electromagnetic shielding performance increases the material cost.
In view of the above, the present invention is inexpensive and is an object to provide a construction how the electromagnetic shielding performance is also high electromagnetic shielding structure.
[0004]
[Means for Solving the Problems]
The method for constructing an electromagnetic shield structure according to claim 1 of the present invention includes attaching a paper or fabric containing a conductive material to a surface of an interior base, impregnating an adhesive from the surface of the paper or fabric, And the paper or fabric.
A method for constructing an electromagnetic shield structure according to claim 2 is provided by attaching a conductive mesh to the surface of the interior base, attaching a paper or fabric containing a conductive material to the surface of the conductive mesh, and the surface of the paper or fabric. Then, the conductive mesh was impregnated with an adhesive to bond the conductive mesh and the paper or fabric.
In the construction method of the electromagnetic shield structure according to claim 3, the paper or fabric containing the conductive material is protected by the protective layer .
Na us, as the interior base, pillar, post, or studs studs etc., runners horizontal member, the section steel used for steadying like steel, further plasterboard, calcium silicate board, a plate-like construction, such as particle board There are walls, floors, floors, ceilings, etc., including materials, concrete walls, floors, and ceilings.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
The electromagnetic shield structure wall substrate according to the first embodiment is created as follows.
First, for example, a conductive mesh is drawn out from a conductive mesh roll wound with a width of 1 m and cut into a predetermined size to prepare a plurality of rectangular conductive meshes 1, 1... As shown in FIG. Next, as shown in FIG. 1, the rectangular conductive meshes 1, 1,... Are attached to the surface of the stud (intermediate column) 3 and the upper and lower runners 4, 5 constituting the wall base 2. In addition, 6 is a steady rest and the wall base 2 of FIG. 1 is a LGS partition wall base. The ends 1a and 1a of the conductive meshes 1 and 1 attached so as to be adjacent to each other are polymerized, for example, by about 10 cm (that is, the superposition part 7 is provided). The overlapping portion 7 is positioned on the surface 3a side of the stud 3.
[0006]
Further, as shown in FIG. 2, a carbon paper 10 as a paper containing a conductive material is attached to the surface side of the conductive mesh 1, 1. The carbon paper 10 is made by, for example, making paper after adding carbon chips and a water-resistant agent to straw pulp, which is a Japanese paper raw material. Since the carbon paper 10 is easy to peel off by itself and easily damaged by tearing or cutting, an aqueous adhesive is applied so that the carbon paper 10 can easily penetrate after being temporarily fixed to the surface of the conductive mesh 1. Apply and spray a diluted adhesive (for example, a 10% aqueous solution of a commercially available woodworking bond) evenly on the surface of the carbon paper 10 with a brush or spray, and let the adhesive penetrate from the surface of the carbon paper 10 to the back surface. The carbon paper 10 is bonded to the surface side of the conductive mesh 1 by naturally drying the adhesive in a state where the agent is impregnated. Furthermore, it is desirable to bond the conductive mesh 1 so that there is no gap. As a result, the carbon paper 10 comes into contact with the mesh opening of the conductive mesh 1, and leakage of electromagnetic waves from the mesh opening is prevented, and at the same time, the carbon paper 10 and the conductive mesh 1 are bonded. The integration and solidification of the adhesive increase the strength of the carbon paper 10 and prevent breakage. In addition, when a seam arises at the time of attachment due to the size of the carbon paper 10, the ends of adjacent carbon papers 10 are attached so as to overlap as in the case of the conductive mesh 1.
[0007]
Thereafter, using a plate-like building material such as calcium silicate board or particle board as a protective layer of carbon paper, as shown in FIG. 2, for example, an ordinary gypsum board 8 is fixed by a fixing means such as a screw 9 and the stud 3 and Attach to upper and lower runners 4 and 5. Thereby, the said superposition | polymerization part 7 is pressed by the gypsum board 8 fixed with screws 9, etc., and a protective layer, and the electroconductive meshes 1 and 1 in the superposition | polymerization part 7 are joined (electrically and mechanically in a contact state) Therefore, there is almost no gap between the conductive meshes 1 and 1 in the overlapping portion 7. This prevents electromagnetic waves from leaking from the gaps and lowering the electromagnetic shielding performance. According to the first embodiment, leakage of electromagnetic waves from the mesh openings of the conductive mesh 1 and the overlapping portion 7 is prevented, and the strength of the carbon paper 10 is improved and damage is prevented. It becomes an electromagnetic shield structure wall foundation with high shielding performance. In addition, before attaching a conductive mesh to a stud, a runner, etc., the carbon paper 10 may be adhere | attached on a conductive mesh, and the conductive mesh which adhere | attached this carbon paper 10 may be attached to a stud, a runner, etc.
[0008]
Thereafter, a wall finishing material such as cloth is pasted on the surface side of the gypsum board 8 to finish the electromagnetic shielding wall. Further, the surface sides of the end portions 8a and 8a of the gypsum boards 8 and 8 are cut obliquely, and the finish putty 50 is filled in the recessed portion 8x formed by abutting the cut portions. Yes.
[0009]
For example, the conductive mesh 1 is formed by using a conductive wire having a wire diameter of, for example, about 0.2 mm and formed in a net shape having, for example, a mesh opening 1b. Therefore, the thickness of the conductive mesh 1 is about 0.4 mm, and the thickness of the overlapping portion 7 is about 0.8 mm. However, the conductive mesh 1 is easy to handle because of its high mechanical strength. It is a stable material with little material deterioration. Therefore, the shield performance does not deteriorate over time.
[0010]
Embodiment 2. FIG.
In the first embodiment, the conductive mesh 1 is used. However, the carbon paper 10 can be obtained by using a high strength pulp material as a constituent material of the carbon paper 10, increasing the thickness of the paper, or mixing reinforcing fibers. As shown in FIG. 3, the carbon paper 10 is directly attached to the surface of the stud 3 and the runners 4 and 5 of the wall base 2, or the adhesive is directly applied to the base of the concrete frame surface with a brush as shown in FIG. You may adhere by spraying, such as a spray.
[0011]
In FIG. 4A, only the stainless mesh (conductive mesh 1) of 100 mesh (wire diameter: 0.10 mm, the length of one side of the mesh opening (opening) is 0.154 mm) is provided on the surface of the wall base 2. When a normal gypsum board is attached (indicated by “-■ -sus # 100” in the figure), a 100 gm stainless steel mesh and carbon paper is provided on the surface of the wall base 2 and a normal gypsum board is attached. (In the figure, indicated by “− ▲ −sus # 100 + CP” = the configuration of the first embodiment), when a normal gypsum board is provided with only carbon paper provided on the surface of the wall base 2 (in the figure, “− ● The result of the electromagnetic shielding performance test of “the carbon paper” = the configuration of Embodiment 2) is shown.
FIG. 4B shows that a normal gypsum board is provided by providing only a stainless mesh of 60 mesh (wire diameter: 0.18 mm, length of one side of mesh opening (opening): 0.24 mm) on the surface of the wall base 2. When attached, when a 60 gm stainless steel mesh and carbon paper are provided on the surface of the wall base 2 and a normal gypsum board is attached (configuration of Embodiment 1), only the carbon paper is provided on the surface of the wall base 2 The electromagnetic shielding performance test result when a normal gypsum board is attached (configuration of the second embodiment) is shown.
In addition, the electromagnetic shielding performance result of Fig.4 (a), (b) is an electromagnetic shielding performance test result by the method (KEC method) tested with the small test body. The numerical values such as 60 mesh and 100 mesh indicate the number of spaces generated by the vertical lines between the unit widths of 25.4 mm.
[0012]
From the test results, it can be seen that according to the configuration of the first embodiment, a very excellent electromagnetic shielding performance can be obtained in a wide frequency band.
It can also be seen that the configuration of the second embodiment can obtain an electromagnetic shielding performance of approximately 40 dB or more in a wide frequency band.
In the configuration in which only the 60 mesh stainless steel mesh is provided on the surface of the base, the performance of lowering the right shoulder is lowered in a high frequency band of 5 GHz or more, but the performance degradation can be prevented by adding the carbon paper 10. .
[0013]
According to the first embodiment, an electromagnetic shield structure wall substrate that is less expensive and has higher electromagnetic shielding performance than conventional ones can be obtained.
In other words, the cost of combining the normal gypsum board 8 and the conductive mesh 1 is lower than the gypsum board having the shielding performance with the built-in conductive mesh, so compared to the shield structure wall base using the gypsum board having the shielding performance, Material costs can be reduced.
Moreover, in the first embodiment, since the carbon paper 10 is provided, different high-frequency components can be shielded between the conductive mesh 1 and the carbon paper 10, so that an extremely excellent electromagnetic shield in a wide frequency band. Performance is obtained.
Moreover, in this Embodiment 1, since there exists the superposition | polymerization part 7 in the back of the abutting part of the gypsum board 8 and the edge parts of the gypsum board 8, it is not necessary to bury the abutting part with a conductive putty. Therefore, it is necessary to flatten the cloth pasting surface by filling the normal putty 50. Therefore, it is not necessary to use an expensive conductive putty, and the material cost can be suppressed.
[0014]
Further, according to the second embodiment, the electromagnetic shielding performance is deteriorated as compared with the first embodiment, but the material cost can be further suppressed as compared with the first embodiment.
[0015]
The conductive mesh 1 is a conductive mesh formed in a net shape with a conductive wire made of a conductive material such as carbon, copper, aluminum, iron, nickel, tin, etc., and a conductive material on the surface of the polymer fiber. A conductive mesh formed in a net shape with a wire material coated with the above film, a conductive mesh in which a conductive material is plated on a mesh formed in a net shape, or the like may be used.
[0016]
Further, the mesh opening size of the mesh of the conductive mesh 1 may be set by the frequency of the electromagnetic wave to be shielded, but a smaller one can shield a higher frequency. The size of the wire diameter is not particularly limited in terms of electromagnetic wave shielding performance. Therefore, in consideration of electromagnetic wave shielding performance, ease of handling in construction, and cost, it is desirable to use a mesh of 50 mesh or more (the length of one side of the mesh opening is 0.3 mm or less).
[0017]
Moreover, although the example using the carbon paper 10 containing a carbon chip was shown in the above, what is necessary is just a paper or fabric which contains electroconductive materials, such as carbon, a metal, and a ferrite, and an adhesive agent osmose | permeates.
[0018]
In the above description, the electromagnetic shield structure wall base has been described. However, an electromagnetic shield structure ceiling base using a field edge base and an electromagnetic shield structure floor base using a joist base can be similarly configured. However, in the case of a joist base, a veneer board or the like may be used instead of the gypsum board.
[0019]
In addition, for the concrete frame floor base, the configuration of Embodiments 1 and 2 may be provided on the concrete frame floor base. In this case, a protective plate (protective layer) such as a veneer plate is provided on the upper surface side of the carbon paper. After laying, for example, floors, tile carpets, floor sheets, carpets, etc. are laid on the floor to make it possible to prevent damage or cutting of carbon paper due to loads on the floor. It is preferable to do.
In addition, when an electromagnetic shield structure base is constructed by applying it to a concrete frame wall base or a concrete frame ceiling base, each conductive mesh 1, 1... Is attached to the concrete base with a glue, anchor, bolt, etc. The electromagnetic shield structure base may be configured. However, in this case, it is desirable to separately provide a base for attaching a wall finishing material or a ceiling finishing material.
[0020]
【The invention's effect】
According to the present invention, it is possible to obtain a construction method of an electromagnetic shield structure that is inexpensive, has good workability, and has high electromagnetic shielding performance. Further, since the conventional interior base can be used as it is, the electromagnetic shield structure base can be easily constructed. Further, an adhesive enters the mesh opening of the conductive mesh, and the integrity of the conductive paper or fabric is increased, and the strength of the conductive paper or fabric is increased. Further, the overlapping portion is joined without a gap by pressing from the protective layer, and leakage of electromagnetic waves can be prevented.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram for explaining a method for constructing an electromagnetic shield structure base according to a first embodiment of the present invention.
FIG. 2 is a view showing a cross section of the base of the electromagnetic shield structure of the first embodiment.
FIG. 3 is a view showing a cross section of the base of the electromagnetic shield structure according to the second embodiment.
FIG. 4 is a diagram showing a result of electromagnetic shielding performance of the underlying electromagnetic shielding structure according to the first and second embodiments.
[Explanation of symbols]
1 conductive mesh, 2 wall base, 10 carbon paper.

Claims (3)

  An electromagnetic shielding structure characterized in that a paper or fabric containing a conductive material is attached to the surface of an interior base, impregnated with an adhesive from the surface of the paper or fabric, and the interior base and the paper or fabric are bonded together Construction method.   A conductive mesh is attached to the surface of the interior base, a paper or fabric containing a conductive material is attached to the surface of the conductive mesh, an adhesive is impregnated from the surface of the paper or fabric, and the conductive mesh and the fabric A method of constructing an electromagnetic shield structure, characterized by adhering paper or fabric. The construction method for an electromagnetic shield structure according to claim 1 or 2, wherein the paper or fabric containing the conductive material is protected by a protective layer .

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