JP3310085B2 - Electromagnetic wave shielding material, its connection structure, its connection method, and electromagnetically shielded soundproof sash - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic shielding material, a connecting structure thereof, a connecting method thereof, and a soundproof sash having an electromagnetic shielding. In particular, an electromagnetic wave shielding material in which the core material of the electromagnetic wave shielding material is an elastic member and is covered with a wire mesh over the entire outer circumference thereof, and is used as an airtight packing for attaching glass to a shoji or as an airtight packing for a door, a window shoji and an opening frame. The present invention relates to a material, a connection structure thereof, a connection method thereof, and a soundproof sash using the electromagnetic wave shielding material.

[0002]

2. Description of the Related Art Electromagnetic waves include atmospheric noise (static), solar noise,
There are natural noise such as space noise and discharge noise (spark, arc), contact noise, glow discharge, high frequency noise, artificial noise such as unnecessary radiation, and the like, and it is known that these noises cause the electronic control device to malfunction. . For example, a powerful transmitter of a truck acts on an electronic control unit of an automobile engine to cause an engine malfunction such as an engine stop, or a computer electromagnetic wave disrupts a inventory management system (POS) to make inventory management inaccurate. For example, the control device of the factory machine stops due to the spark of the welding machine. As measures to prevent these problems, there are two methods: one is to cover the equipment directly with an electromagnetic wave shielding material to prevent the electromagnetic waves from reaching the equipment that is affected by the electromagnetic waves, and the other is to block the electromagnetic waves in the building that houses the equipment, for example, a building. It is possible to consider the side receiving the obstacle.Conversely, to prevent the propagation of electromagnetic waves from equipment that generates electromagnetic waves, the equipment is covered with an electromagnetic wave prevention member, or the building is exposed to electromagnetic waves so that the electromagnetic waves do not leak from the building containing the equipment. It is to shield.

When the device receiving or generating the electromagnetic wave is covered with an electromagnetic wave shielding material, it is usually sufficient that the electromagnetic wave shielding material has only a function of preventing transmission of the electromagnetic wave. On the other hand, for example, when electromagnetic waves are shielded between the inside and the outside of a building or the like, each member such as a wall and an opening of the building has a function as a building. For example, in the case of an aluminum sash glass window, the glass takes in external light, the glazing bead for mounting the glass holds the glass in the sash frame and ensures airtightness, and the airtight packing between the shoji and the glass is required to be airtight. You. Doors at entrances and doors are required to have an electromagnetic wave shield together with soundproofing depending on the entry and exit of people.

An electromagnetic wave shielding material is used to shield an electromagnetic wave. The principle is to use a conductive member to increase the reflection loss of the electromagnetic wave, generate an eddy current inside the shielding material, and increase the absorption loss. Alternatively, multiple reflection loss caused by repeated reflection inside the shield material is used.

When an opening of a building is shielded from electromagnetic waves based on such a principle, if the sash is an opaque panel plate, the sash itself is shielded by using a metal plate panel. In addition, in the case of a glass shoji, an electromagnetic wave shielding glass formed by integrally incorporating a wire net into the glass is used, and an electromagnetic wave shielding packing made of a strip material is used for holding the glass. Shield packing is used.

[0006]

The core of the electromagnetic wave shielding material of the above-mentioned strip is formed, for example, by molding silicon rubber into a shape suitable for hermetic packing, and a nickel-copper alloy (monel), iron, copper, A wire mesh formed by knitting any one wire material such as tin or aluminum is inserted. Here, the shape of the core material is restricted to a simple shape because the wire mesh in the core material cross section cannot be used as an airtight packing unless it follows the core material. Such a wire has a diameter of about 0.05 to 0.1 mm and is woven into a high-density mesh. Therefore, the wire mesh is frayed at the end of the wire mesh. Therefore, it can be a glazing bead that fits into the glass groove of the conventional aluminum sash,
In order to seal the gap between the opening frame and the shoji, the ends are frayed when fitted into the grooves of the sash. For example, the shape is carefully prepared using nippers or scissors. However, even if the shape is adjusted, frays will come out as soon as you handle it. In particular, the end of the endless hermetic packing that is fitted into the endless groove of the sash is frayed at the end of the wire mesh simply by abutting,
Since the wire mesh and the core material are not fixed, bending the electromagnetic wave shielding material causes the wire mesh and the core material to shift. If the core material protrudes due to this shift, electromagnetic waves can easily pass through, and if the wire mesh protrudes, the airtightness is impaired.

Therefore, in order to solve such a defect, an electromagnetic wave shielding material in which a core material and a wire net are fixed over the entire length with an adhesive or the like has been supplied. When the core material and the wire mesh are fixed over the entire length in this way, rigidity is given to the whole and the elasticity is lost, so that the performance as an airtight packing is lost. In other words, for devices that receive electromagnetic waves as described above or that need to prevent receiving electromagnetic waves for active electromagnetic wave prevention that directly covers devices that emit electromagnetic waves with an electromagnetic wave shielding material, or devices that emit electromagnetic waves When these devices are shielded by a building in an electromagnetic wave, not only an electromagnetic wave shielding function but also a unique function as a building is inevitably required.

[0008] When a soundproofing function is required in a building requiring such an electromagnetic wave shield, it is difficult. This is because, when an electromagnetic wave shielding material in which a wire mesh is covered on a core material such as rubber is used as an airtight packing for soundproofing, the adhesion between the packing and a counterpart member is poor. Also, the terminal of the electromagnetic wave shielding material is frayed, and it is difficult to perform reasonable processing while maintaining the packing function. Therefore, if an electromagnetic wave shield band is further provided on the soundproof sash on the soundproof packing band, the thickness of the soundproof sash in the expected direction becomes large and complicated, and in the case of a soundproof door, the packing band is desirably double.

An object of the present invention is to provide an electromagnetic wave shielding material of a strip material in which a core material suitable for a sash or a gap between a sash and an opening frame is covered with a wire mesh, a connection structure thereof, a connection method thereof, and a soundproof sash shielded by an electromagnetic wave. Aim.

[0010]

According to a first aspect of the present invention, there is provided an electromagnetic wave shielding material in which the outer periphery of a core of an elastic member of a strip is covered with a wire net over its entire length. Are fixed with an adhesive.

A second invention of the present invention is the electromagnetic wave shielding material according to the first invention, wherein the core material and the wire net are fixed only at one end.

[0012] A third invention of the present invention is the electromagnetic wave shielding material according to the first invention, wherein a core material and a wire net are fixed at both ends.

According to a fourth aspect of the present invention, there is provided an electromagnetic shield material connecting structure in which ends of an electromagnetic wave shield material in which an outer periphery of a core of an elastic member of a strip is covered with a wire net over its entire length are connected to each other to connect ends thereof. A connection structure of an electromagnetic wave shielding material, wherein a core material and a wire net are fixed to an outer periphery of an end portion of the electromagnetic wave shielding material with an adhesive, and ends of the two electromagnetic wave shielding materials are butted.

According to a fifth aspect of the present invention, there is provided a connection structure of an electromagnetic wave shielding material in which an outer periphery of a core of an elastic member of a strip is joined with an electromagnetic wave shielding material covered with a wire net over its entire length and ends are connected. One end has a core material and the outer periphery of the end of the wire mesh bonded together, and the core material at the other end of the electromagnetic wave shielding material is abutted against one end of the electromagnetic wave shielding material, and the electromagnetic wave shielding material is The wire mesh at the other end of the wire extends from the edge of the core material and is placed over the wire mesh at one end of the electromagnetic wave shielding material, and at least the core material and the wire mesh at the other end of the electromagnetic wave shielding material are bonded. A connection structure for an electromagnetic wave shielding material, which is fixed by an agent.

According to a sixth aspect of the present invention, there is provided a method of connecting ends by joining electromagnetic shielding materials covered with a wire net over an entire length of an outer periphery of a core of an elastic member of a strip, and connecting one end of the electromagnetic shielding materials. Only the core material and the wire mesh are fixed with an adhesive, and the other end of the electromagnetic wave shielding material overlaps with the one end of the electromagnetic wave shielding material so that the wire mesh ends from the core material end of the other electromagnetic wave shielding material. The other portion of the core is folded over the wire mesh of the other electromagnetic wave shielding material itself so that the core material is exposed more than the overlap amount, and the core material of the other end is overlapped with the one end of the electromagnetic wave shielding material. Cut to the size of the butting, butt the both ends of the core of the electromagnetic shielding material, and return the folded part of the wire mesh at the other end of the electromagnetic shielding material and the one end of the electromagnetic shielding material Money Over the top, a connection method of an electromagnetic wave shielding material, characterized in both the wire mesh and the core member at the other end of the electromagnetic shielding material and fixed with adhesive least.

According to a seventh aspect of the present invention, after the folded back end of the wire mesh at the other end of the electromagnetic wave shielding material is restored, the wire mesh and the wire mesh at one end of the electromagnetic wave shielding material are bonded to the adhesive. A method for connecting an electromagnetic wave shielding material according to a sixth aspect, characterized in that the connection is fixed by:

According to an eighth aspect of the present invention, a double packing is provided in a prospective direction between an opening frame and a shoji which opens and closes the inside of the opening frame. One of the packings is covered with a wire net on a core material. An airtight electromagnetic wave shielding material of the material ,
The core material and wire mesh are fixed with an adhesive around the outer edge of the material.
An electromagnetically shielded soundproof sash to which a dense electromagnetic wave shielding material is attached .

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 Before describing the embodiment, the object to which the above-mentioned electromagnetic wave shielding material is applied will be described.
FIG. 14 is a perspective view of a region including a building with a part cut away.

The area where the buildings 1 and 2 and the radio tower 3 are located is shown. A computer 4 is installed on the third floor of the building 1, and a terminal device 5 of the computer 4 is installed. The computer 4 can be operated via a wireless device 7 and an optical cable 8 by a terminal device 6 placed on the first floor. The computer 4 can use an antenna 9 that can use a communication satellite.

A radar antenna 12 is placed on the roof of a building 2 separated from a street 11 by the building 1. An automobile 14 passes on a road 13 which is orthogonal to the street 11 and faces the buildings 1 and 2. A radio transmitter 15 for interfering with the operation of the computer 4 and a receiver 16 for eavesdropping on the data of the computer 4 are provided.

The radio tower 3 is located far from the building 1 and emits a powerful broadcast wave for radio or television.

The building 1 has windows 17.

In the figure, the building 1 is provided with an electromagnetic wave shield. The electromagnetic wave shield is a wall 18 of a building, a window 17 of an opening, and an entrance (not shown) but described later.

If such an electromagnetic wave shield is not provided, the computer 4 malfunctions due to the interference wave from the interference wave transmitter 15. Also, malfunction may occur due to radio waves from the radio tower 3 such as a television or radio, radar antennas 12, and radio waves from the engine from the automobile 14. That is, it is obstructed by electromagnetic waves flying around the external space of the building 1. Also, the electromagnetic waves generated when the computer 4 is operated may leak to the outside of the building 1 and be caught by the eavesdropping receiver 16.

FIG. 3 is a front view of an electromagnetic wave shielded soundproof door according to an embodiment of the present invention. The soundproof door is provided at an entrance and an entrance inside the building 1, and the soundproof door measures sound and is shielded from electromagnetic waves. Things. That is, for example, a room equipped with the computer 4, in general, various electronic devices are used, and a soundproof door is provided for a room that needs soundproofing and needs an electromagnetic wave shield.

First, the overall configuration of the soundproof electromagnetic wave shield door will be described.

FIG. 3 is a front view of the double door soundproof door shielded by electromagnetic waves as viewed from the inside. In the figure, an opening frame 61 has an upper frame 62, a lower frame 63, and a vertical frame 64 arranged in a square,
Left and right doors 65, 66 are pivotally attached to the vertical frame 64. The left and right doors 65 and 66 have the same shape except for the combining part 67.

FIG. 1 is an enlarged sectional view taken along the line AA of FIG. 3, and FIG. 2 is an enlarged sectional view taken along the line BB of FIG. As shown in FIG. 2, the inner periphery of the upper frame 62 of the opening frame 61 is integrally formed by welding a plurality of members so as to form a step shape that rises from the inside to the outside.
Grooves 71 and 72 are provided at the joint portion of the stepped member, and a part of the hermetic electromagnetic wave shielding material 73 and the hermetic material 74 arranged on the upper side of the opening frame 61 and on the left and right inner circumferences are formed by the grooves 71 and 72. Is fitted. The lower frame 63 of the opening frame 61 is formed in a hollow rectangular cross section with the upper surface 63b being one plane.

As shown in FIG. 1, the vertical frame 64 of the opening frame 61 is integrally formed by welding a plurality of members so as to form a two-stage shape in which the space between the vertical frames 64 extends from the inner side to the outer side. In addition to the grooves 71, 72 of the upper frame 62, the grooves 71, 72 are provided at the same position in the three directions of the inner circumference of the inner periphery of the opening frame 61, respectively.
The airtight electromagnetic wave shielding material 7 described above is provided in the grooves 71 and 72.
3. The airtight material 74 is fitted. Although not shown at the lower end of the airtight member 74 provided on the vertical frame 64, for example, a thickness of 7 m
m silicone sponge is adhered to the upper surface 63b of the lower frame 63 with elasticity and the door 6
The silicone sponge and the bottom seal 111, which will be described later, are brought into pressure contact with each other when opening and closing 5, 66.

The doors 65 and 66 are the same except for the combining section 67 and are symmetrical. The combination frame 77 of the doors 65 and 66,
78 will be described. The inside of the assembling frame 77 of the door 65 is provided with two grooves 79 and 81 along the assembling frame 77. The groove 79 is open toward the outside, and the groove 81 is open toward the assembling frame 78. An airtight material 82 that is in contact with the assembling frame 78 is fitted in the groove 79. The airtight material 82 is a central fin 8 for airtight covering the opening edge of the groove 79.
2b and hollow protrusions 82c on both sides thereof. Groove 81
Is fitted with an airtight material 83. The groove 8 of the airtight material 83
The portion which goes outside from 1 has a hollow portion, and the flat portion 83a facing the inner side constituting the hollow portion is in contact with one of the central fin 82b and the two hollow ridges 82c of the airtight material 82 described above. At the same time, it is in contact with the mating frame 78 on the slope 83b. A groove 84 is provided on the outer side of the mating frame 78, and an airtight electromagnetic wave shielding material 85 having the same shape as the airtight material 83 is fitted therein.
5b is in contact with the combination frame 77. The airtight materials 82 and 83 extend vertically, the airtight material 82 has an end contacting the inner periphery on the inner side of the upper frame 62, and the airtight material 83 reaches the outer peripheral surface 92 c of the upper frame 90. Flat portion 83a facing side
Is pressed against an airtight material 74 inside the upper frame 62. The configuration of the airtight material in the lower portion of the combining section 67 will be described later.

The groove 79 is formed by bending the inner surface member 65a of the door 65, and the groove 81 is a mating frame for connecting the inner surface member 65a and the inner and outer surface members 65a, 65b at the mating portion. An airtight material abutting plate 88 of a deformed channel-shaped steel profile overlapped with the material 77a. The groove 84 is formed by bending the edge of the outer surface material 66b of the door 66 twice inwardly into a key shape, and turning the material 78a for the folding frame into a crank shape inside the bent portion to the outer surface material 66b. The bottom of the groove formed by contact and fixation
The airtight material contact plate 89 in contact with the side surface and the L-shaped member 9 in contact with the bottom of the groove and the one side surface of the airtight material contact plate 89 overlapped with the groove
1.

At the joining portion of the door 66, the above-mentioned sealing member abutting plate 89 made of a stainless steel plate and in contact with the sealing members 82 and 83 provided on the door 65 is provided with a joining frame member 78a and an inner surface member 66a.
It is provided in contact with. The airtight material abutment plate 89 is
And an inner corner portion 89b in contact with the slope portion 83b of the airtight material 83. The door 65 is provided with an airtight material abutting plate 88 also made of a stainless steel plate, and the airtight material abutting plate 88 is provided with an outer corner portion 88 a that comes into contact with the slope portion 85 b of the airtight material electromagnetic wave shielding material 85. . A blindfold member 86 for preventing wind and rain from being directly blown from the outside onto the mating portion 67 and performing blindfolding for maintaining the appearance is fixed to the door 66.

The doors 65 and 66 are pivotally connected by hinges (not shown) near the outer corner of the inner periphery of the vertical frame 64. Regarding the construction constructed for electromagnetic wave shielding and soundproofing, doors 65, 66
Are the same for the door 65 and the description for the door 66 is omitted.

The upper frame 90 of the door 65 is provided with an airtight material abutting plate 92 made of a stainless steel plate, and the corresponding abutting plate 92 is bent in a crank shape with a fin in cross section, and comes into contact with the airtight electromagnetic wave shielding material 73. The first contact portion is a vertical surface portion 92a, the second contact portion in contact with the airtight material 74 is also a vertical surface portion 92b, and an outer peripheral surface portion 92c is provided between the vertical surface portions 92a and 92b. I have. The upper frame 90 is the inner and outer panels 65
The upper frame member 90a for connecting between the a and 65b is provided. The upper frame material 90a is bent on the inner and outer sides so as to be in contact with the inner and outer face members 65a and 65b. The upper surface of the inner side surface member 65a is in contact with the airtight material abutting plate 92 sandwiched between the vertical surface portion 92b of the airtight material abutting plate 92 and the vertical portion 90a-1 of the upper frame material 90a.

The vertical frame 94 is made of an airtight electromagnetic wave shielding material 73,
The airtight material 74 includes a stainless steel airtight material contact plate 95 that is in contact with the airtight material 74.
And an oblique portion 95b in contact with the airtight material 73.
The inner side surface part 95c following 5a is abutted and fixed to the inner side surface member 65a, and has an outer peripheral flat part 95d connecting the inner corner part 95a and the oblique part 95b in the inner and outer directions.

Inside the door 65, a calcium silicate plate 101 is arranged along the outer side material 65b for heat insulation and soundproofing.
A heat insulating material 102 such as glass wool or rock wool is disposed on the inner side thereof, and is in contact with the inner surface material 65a to form a plate-shaped vibration damping material 1.
03 is housed. The heat insulating material 102 is divided in the middle between the inside and the outside. In this division, the vibration damping material supporting member 105 is formed so as to form a vibration damping plate mounting groove 104 which is opened toward and surrounds the door 65 in the circumferential direction.
An elastic material 106 such as chloroprene rubber is vulcanized and adhered to the periphery thereof to hold a damping material holding plate 107, and a damping material 108 is attached to the holding plate 107.

In the above configuration, the frames and frames whose materials are not described are steel plates, the airtight materials 74, 82, 83, 85 are silicone sponge or flame-retardant silicone sponge, and the airtight electromagnetic wave shielding material 73 is The outer periphery of the silicone sponge or flame-retardant silicone sponge is covered with a wire mesh (to be described in detail later). Airtight material contact plates 88, 89,
Reference numerals 92 and 95 denote SUS304, SUS316 and the like having a thickness of 1.
5 mm is polished and finished with a sandpaper of No. 180 or less after forming.

In the above embodiment, the lower frame side airtight structure is the same as the upper frame side airtight structure. On the other hand, the airtight material abutment plates are each made of a mild steel plate, and the airtight material abutment portion is coated with zinc chromate rust preventive paint. A comparison of the sound transmission loss in a soundproofing laboratory with the result given as a comparative example shows that the sound transmission loss increases as compared with the conventional case.

However, the double-sided soundproof door of the present invention, which is provided with an electromagnetic wave shield and has a lower frame having a flat upper surface, has the above-mentioned problems to be solved.

Bottom seal 1 provided on each of doors 65 and 66
11 is an airtight material 7 near the inner periphery of the vertical frame 64 and at the side of the end.
It touches 4. The airtight material 74 at this position is a vertical frame 94 of the door.
Due to the portion of the airtight material abutting plate 95 that is in pressure contact with the inner corner portion 95a, the tip of the airtight material abutment plate 95 projects elastically and is in pressure contact with the bottom seal 111.

The bottom seal 111 has a mounting portion 111a and a lower frame 63 which fit into the wide T-slot 112a of the bottom seal holding member 112 made of an extruded material as shown in a cross section in FIG.
Sealing part 111 having fin 111b-1 contacting the upper surface of
b.

FIG. 4 is a horizontal sectional view of the lower portion of the joining portion, FIG. 5 is a plan view showing only the bottom seal of FIG. 4, and FIG. 6 is an exploded side view of the bottom seal of FIG. Here, the code of the bottom seal of the door 65 is 111A, and the code of the bottom seal of the door 66 is 111B.

The bottom seal holding member 11 is located within the surfaces of the airtight material contact plates 88, 89 shown in FIG.
The end on the mating side of No. 2 is finished. In this example, the end of the bottom seal holding member 112 is cut on substantially the same surface as the surface of the hermetic material abutting plates 88 and 89 with which the hermetic material abuts. Since the mounting portions 111a of the bottom seals 111A and 111B are finished in accordance with the end of the bottom seal holding member 112, the mounting portions 1a are provided in the space 67a facing the mating portion 67.
11a does not exist. The sealing portion 111b is provided at the end of the joining portion side at the bottom seal 11 provided on the door 65 to be closed earlier.
The end of the joining portion side of 1A is a sealing surface 111A-1 which faces obliquely in the direction of opening the door 65 to be closed first.
The sealing surface 111A-1 is a flat surface, but may be a curved surface or a deformed surface. The sealing surface 111A-1 is located in the joining space 67a. The joining side end of the bottom seal 111B provided on the door 66 to be closed later has a sealing surface 111 having a shape in contact with the sealing surface 111A-1 provided on the door 65 to be closed earlier.
B-1. Both bottom seals 111A, 1
The mating side ends of 11B are each provided with a bottom seal missing portion 111c in which an upper mounting portion 111a is cut out. In the exploded side view of FIG. 6, the bottom seals 111A and 111B are represented as being difficult to move up and down to clearly show the shape of the cut-out bottom seal missing portion 111c.

In this embodiment, the lower ends of the vertical sealing members 82 and 83 facing the bottom seals 111A and 111B inside the joining section 67 are connected to the bottom seals 111A and 1B in this example.
11B, the airtight members 82 and 83 shown in FIG.
An integral airtight member 114 having an outer shape of a cross section combined with the airtight members 82 and 83 is provided so as to abut against the lower ends thereof. The airtight material 114 has a mounting portion 115 having the same shape as the mounting portion 82a of the airtight material 82, and the mounting portion 115 is integrally provided with a sealing portion 116. The attaching portion 115 is made of, for example, an EPDM hard sponge, and the sealing portion 116 is a flame-retardant sponge made of silicone rubber. The two bottom seals 111A and 111B are interlocked with each other by tightening handles 68 and 69 provided on the assembling frames 77 and 78, respectively, so that the bottom seals 111A and 111B are spaced apart from and in contact with the upper surface 63b of the lower frame 63.

FIG. 8 is a plan view showing an exploded state of the airtight material 114.
FIG. 9 is a side view of FIG. The mounting portion 115 is an inverted claw 115
The inverted claw 115a is deformed and press-fitted into the groove 79 of the door 65 at the summing portion 67, and is attached to the lower portion. A missing portion 116a of the sealing portion is provided with a sealing portion 116a facing the outside, which defines the missing portion 116a.
11A-2 (see FIGS. 4 and 5) by elasticity of the sealing portion 116. The downward surface 116c that defines the missing portion 116a is located at the bottom end of the bottom seal 11
Bottom seal sealing portion 1 on the cut-off portion 111c of 1A
11b is close to the upper surface.

The airtight material 114 at the lower part in the vertical direction of the joining portion may be adhered to the door 65 since the surface 116d in contact with the door 65 is always immovable with respect to the door 65 in the mounted state.
The sealing surface 116e of the door 66 which is in contact with the airtight material abutting plate 89 is bulged so as to be pressed against the airtight material abutting plate 89 and compressed. The airtight material 114 is integrally formed with the mounting portion 115 and the sealing portion 116, and in the mounted state, is in contact with or bonded to the lower ends of the airtight materials 82, 83 inside the mating portion shown in FIG. Of course, integral molding with the airtight members 82 and 83 is also possible.

The opening and closing of the door will be described. To close the door from a state where the doors 65 and 66 are open, the door 65 is first closed.

When the door 65 is closed, the airtight electromagnetic wave shielding material 73 and the airtight material 7
4 and the airtight material abutment plates 92 and 95 of the door 65 abut respectively. Since the bottom seal 111A provided on the door 65 is raised by the operation of releasing the tightening of the tightening handle 68 before the opening operation of the door 65, the bottom seal 111A is kept away from the upper surface 63b of the lower frame. When the door 66 is closed after the door 65 is closed, the airtight electromagnetic wave shielding material 73, the airtight material 74, which surrounds the upper frame 62 and the vertical frame 64, and the airtight material abutting plates 92 and 95 of the door 66.
And contact each other. Bottom seal 111 provided on door 66
B remains raised by the operation of releasing the tightening of the tightening handle 69 before the opening operation of the door 66, so that the upper surface 63 of the lower frame
b.

When the door 66 is closed later, the bottom seals 111A and 111B become oblique sealing surfaces 111A-1 and 111A-1.
Press-contact at 111B-1.

Next, when the tightening handles 68 and 69 are tightened, the doors 65 and 66 are pulled to the airtight electromagnetic wave shielding material 73 and the airtight material 74 by a tightening device (not shown), and the bottom seal 111A is simultaneously locked and locked. . 111B descends and comes into pressure contact with the upper surface 63b of the lower frame. Bottom seal 1
At the time of the lowering of 11A, the airtight material 114 below the summing section 67
The sealing portion side surface 111A-2 of the bottom seal 111A slides down on the sealing surface 116b on the side surface of the sealing portion 116 of the sealing portion 116 (see FIGS. 7 to 9).
Thereby, the doors 65 and 66 at the lower part of the summing unit 67
There is no gap between the lower frame 63 and the lower frame 63.

To open the door, first tighten the handles 68,6.
9 is actuated in the direction to release the tightness, the bottom seals 111A and 111B rise to form a gap between the lower frame 63 and the bottom seals 111A and 111B, and the airtight electromagnetic wave shielding material 73, the airtight material 74 and the doors 65 and 66 are formed. Is released and unlocked. First, the door 66 is opened, and then the door 65 is opened.

In the above, the airtight electromagnetic wave shielding material 7
3, 11, and 1 are sectional views and side views of FIGS.
2, shown in FIG.

As shown in the sectional view of FIG. 10, the airtight electromagnetic wave shielding member 73 is a strip having a substantially rectangular shape and a core 73a covered with a wire mesh 73b on the outer periphery. The core member 73a is made of a soft sponge-like silicon rubber elastic material having a hardness of about 15 °. The wire mesh 73b has a diameter of 0.05 to 0.1.
mm high-density wire of monel steel, copper, aluminum, stainless steel or the like. That is, electromagnetic waves are well reflected and absorbed. The ends of the hermetic electromagnetic wave shielding material 73 are fixed at both ends by applying an adhesive 73c to a core material 73a and a wire mesh 73b as shown by a number of parallel oblique lines in FIG. The hermetic electromagnetic wave shielding material 73 fits into the groove 71 through the upper frame 62 and the vertical frames 63, is arranged in a gate shape, and has an end corresponding to the lower end surface of the door 65.

As shown in the sectional view of FIG. 12, the core material 85a of the hermetic electromagnetic wave shielding material 85 is formed by integrally molding the hermetic portion 85a-1 and the mounting portion 85a-2. Numeral 1 is made of a flame-retardant sponge-like silicone rubber and is hollow, and the mounting portion 85a-2 is made of a hard sponge (EPDM). Is provided.

The core 85a is covered with a wire netting 85M over the entire length. In the above, since the airtight portion 85a-1 has a hollow shape, it can be adapted to a fitting portion which is easily deviated. The upper end of the hermetic electromagnetic wave shielding member 85 is attached to the groove 71 of the upper frame and is in contact with the hermetic electromagnetic wave shielding member 73, and the lower end coincides with the lower end of the door 66.

As shown in FIG. 13, at both ends of the airtight electromagnetic wave shielding material 85, the core material 85a-2 and the wire netting 85M are bonded with an adhesive 85c.

Where the portions to be used for the hermetic electromagnetic wave shielding members 73 and 85 are not specified and whose length cannot be determined, only the core material and the wire net are bonded at one end in advance with an adhesive.

Although the embodiment has a single bottom seal, when the bottom seal is additionally provided on the outside, the airtight structure on the outside of the lower portion of the joining portion is configured in the same manner as described above. In this case, the abutting position at the joining portion of the bottom seal additionally provided on the outer side is the outer corner 88a of the airtight material abutting plate 88 in FIG.

The embodiment is applicable to a double door soundproof door made of aluminum in the same manner as for a steel door.

When the bottom seal portion is shielded from electromagnetic waves in the above description, the bottom seal is made of a conductive silicon seal. Alternatively, an airtight electromagnetic wave shielding material is provided outside the bottom seal in parallel with the bottom seal. The airtight electromagnetic wave shielding material provided on the outer side is provided in the same manner as the inner side bottom seal in a straight line horizontally so as to contact both ends of the airtight electromagnetic wave shielding material arranged in a gate shape in the upper frame vertical frame described above. Attach vertically up and down.

The bottom seal is not used for the soundproof structure at the opening such as the window 17 and the above-mentioned airtight electromagnetic wave shielding material 73 is attached in a closed linear shape so as to surround the opening frame. At this time, the hermetic electromagnetic wave shielding material has a square closed shape, but has an end joint. Conventionally, the end joint portion has a problem in that the wire mesh is frayed, which makes the construction difficult, and the electromagnetic wave shield is incomplete or the airtightness is impaired.

In the conventional example, since the wire mesh and the core material are not fixed, the wire mesh and the core material are shifted in the longitudinal direction. Therefore, at the end of the electromagnetic wave shielding material, (1) when the core material protrudes from the wire mesh, the electromagnetic wave shield becomes incomplete, and when (2) the wire mesh protrudes from the core material, the electromagnetic wave shield is not impaired but the airtightness is impaired. . (3) When both ends of the core material and the wire mesh match, the wire mesh is frayed, so that both the electromagnetic wave shield and the airtightness are incomplete or one of them is incomplete, and the reliability is also high. Sometimes it's not clear.
(4) If the core material and the wire net are fixed over the entire length with an adhesive or the like, the flexibility of the hermetic electromagnetic wave shielding material is lost, and the hermeticity is impaired.

As described above, the hermetic electromagnetic wave shielding material of the present invention is obtained by fixing the core material and the wire netting to only one end or both ends of the hermetic electromagnetic wave shielding material with, for example, an adhesive.

In the case of using the airtight electromagnetic wave shielding material in which the core material at both ends and the wire net are bonded at the joint at the end of the airtight electromagnetic wave shielding material, the both ends can be used as they are. Also, since both ends are dimensionally matched, there is a limitation, but the wire can be cut. Even if the wire is cut, the core material and the wire mesh are fixed with an adhesive, so that the wire mesh does not fray.

However, in this case, even if the ends of the hermetic electromagnetic shielding material are completely butt-joined at the time of construction, there is no guarantee that the butt ends will not separate.

The method of constructing the end joint of the hermetic electromagnetic shielding material in this case will be described. In order to reduce the waiting time for solidification of the adhesive, it is preferable to use an airtight electromagnetic wave sealing material in which a core material and a wire mesh are fixed in advance by an adhesive only on one end of the airtight electromagnetic wave shielding material. . However, the core material and the wire mesh at one end may be fixed at the site with an adhesive.

As shown in FIG. 15, the core material 21 and the wire net 22 are fixed on one side only by an adhesive 23. The material 24 is fitted and the core material 2 of the material 24 is
1 and the other end 24B to which the wire mesh 22 is not fixed are overlapped with one end 24A in a state of being fitted into a groove 25 having a closed shape of the hermetic electromagnetic wave shielding material 24 (overlap length L). The overlap dimension is about twice the maximum cross-sectional width (as a rectangular cross section) of the hermetic electromagnetic wave shielding material 24. Here, the airtight electromagnetic wave shielding material 24 is formed from the groove 25 of the sash about 10 cm or more from the other end 24B side.
And the core material 21 on the other end 24B side is displaced in the longitudinal direction of the electromagnetic wave shielding material 24 so as to protrude from the wire mesh 22.
The amount of shift is the overlap length L shown in FIG.
For example, a little more than L is taken.

As shown in FIG. 16, the other end 24B is again overlapped L. In this state, a line or a cut 26 is made in the core material 21 on the other end 24B side so as to match the end face 24A-1 of the end of the one end 24A. The other end 24B is pulled out from the groove 25 again, and the other end 24B is cut from a line or a cut.

As shown in FIG. 17, the other end 24 is located outside the groove 25.
The B side wire mesh 22 is pulled out from the cut end of the core material 21.
This withdrawal amount is approximately the length L of the overlap.

As shown in FIG. 18, the core material 2 on the other end 24B side
Turn back the end of the wire mesh 22 protruding from the
2 on top. This folded position is a position that is within the core material 21 by a distance N from the cut end surface 21a of the core material 21. This distance N may be as small as 2-3 mm. The length of the folded portion 22a of the folded wire net 22 is L + 2N.

As shown in FIG. 19, the end on the side of one end 24A is removed from the groove 25 of the sash, and both ends 24A and 24B are brought into contact with each other. At this time, if necessary, the end faces of the core members 21 are fixed with an adhesive (an instant adhesive is suitable).

As shown in FIG. 20, the folded portion 22a is returned to the original position, and is overlapped on the wire net 22 on one end 24A side.

As shown in FIG. 21, an adhesive 28 (indicated by “x” in the figure) is applied to at least the entire periphery of the other end 24B. The adhesive 27 may be applied on the one end 24A side further from the wire mesh 22 covered from the other end 24B side. Adhesive 28
The core material 21 and the wire mesh 22 on the other end 24B side are fixed by the above construction. On one end 24A side, the wire mesh 22 is fixed by the adhesive 27 applied between the wire meshes 22 and is also bonded to the adhesive 23 to which the core 21 and the wire mesh 22 have already been fixed. Adhesive 2 above
When the solidifications 7 and 28 are solidified, the hermetic electromagnetic wave shielding material 24 continues in a closed shape. Here, both ends 24A and 24B are fitted into the groove 25 of the sash to complete the process.

As a modification of the above method, as shown in FIG. 16, when the core 21 on the other end 24B side is projected from the wire mesh 22, the wire mesh 22 is not shifted with respect to the wire 21.
The two ends may be folded back and overlaid on its own wire mesh 22. By doing so, the number of steps can be reduced following that of FIGS. Also, a jig provided with a groove corresponding to the groove 25 of the sash may be used instead of being present in the groove 25 of the sash. If the return is limited to the case of a closed endless shape, the total length may be determined by adding the overlap length L in advance, and the connection is made as described above without using the sash groove 25 or the jig. May be.

FIG. 22 corresponds to FIG. This lower frame 6
2A is sloping and has steps on both sides of the door. Lower frame 62
A has the same diameter as the upper frame 62, and has grooves 71, 72 surrounding the opening frame 61, and the airtight electromagnetic wave shielding material 73 and the airtight packing 74 are fitted in the respective grooves 71, 72 in a closed shape. Have been combined.

In this embodiment, the hermetic packing 74 may be a hermetic electromagnetic shielding material, and the hermetic electromagnetic shielding material 73 may be a hermetic packing.

[0078]

According to the first aspect of the present invention, since the core material and the wire net are fixed by an adhesive around the end of the electromagnetic wave shielding material of the strip material, the flexibility as an airtight material is not impaired, and the core is attached to the end. Since the material or the wire mesh does not protrude or the wire mesh is not frayed, the construction is easy and the airtightness and the electromagnetic wave shielding property are not impaired.

In the second invention of the present invention, the core material and the wire net are fixed only at one end in the first invention. Therefore, even when the required total length is not determined, the dimensions are adjusted and the other end is fixed. Can fix the wire mesh and core material, and it is easier and shorter man-hour than both ends are constructed on site.

In the third aspect of the present invention, since the core material and the wire net are fixed at both ends in the first aspect, if the entire length is known in advance, the sash is fitted directly into the groove. Is sufficient and suitable for mass production.

According to the fourth aspect of the present invention, since the electromagnetic wave shielding material in which the core material and the wire mesh are fixed with an adhesive at both ends is abutted, the electromagnetic wave shielding and the airtightness at the connection portion are simple when the construction is performed endlessly. Is secured.

According to a fifth aspect of the present invention, at one end of the electromagnetic wave shielding material, at a connecting portion of the electromagnetic wave shielding material to which the core material is abutted, the core material on the side and the wire mesh are fixed with an adhesive, Since the wire mesh at the other end is extended from the core material end and covered with the wire mesh end at the one end, at least the other core material and the wire mesh are fixed with an adhesive, so that the airtightness is improved. The airtightness and the electromagnetic wave shield at the joint of the electromagnetic wave shield material are perfect.

According to a sixth aspect of the present invention, when obtaining the configuration of the fifth aspect, the ends of the two electromagnetic wave shielding members are overlapped, and the core material is extended outside by more than the overlap amount from the other end of the core material. Fold the wire mesh so that it comes out, cut the exposed end of the other core material into a size that abuts against one of the ends of the core material, butch both ends of the core material, and return the other folded wire net to its original position. In this case, since the wire mesh is covered with one wire end and at least the other core material and the wire mesh are fixed with an adhesive, airtightness and a complete connection of the electromagnetic wave shield can be easily obtained.

According to a seventh aspect of the present invention, in the sixth aspect, the wire meshes at both ends are fixed with an adhesive, so that the joining portion of the electromagnetic wave shielding material is firmly fixed. In this case, it can be fitted into the sash groove as it is.

The eighth invention according to the present invention is characterized in that the inner side is an airtight packing and the outer side is an airtight electromagnetic wave shielding material in the viewing direction between the opening frame and the shoji.
Airtight electromagnetic wave shielding material with wire mesh fixed with adhesive
The installation of airtight electromagnetic wave shielding material is
Electromagnetic wave shielding can be performed easily while maintaining soundproofing with double packing without impairing the airtight electromagnetic wave shielding property .

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view taken along line AA of FIG.

FIG. 2 is an enlarged sectional view taken along line BB of FIG. 3;

FIG. 3 is a front view of the electromagnetic wave shielded soundproof door of the embodiment of the present invention.

FIG. 4 is a horizontal cross-sectional view of a lower portion of a combining portion of FIG.

FIG. 5 is a plan view of a bottom seal.

FIG. 6 is an exploded side view of the bottom seal.

FIG. 7 is a horizontal sectional view just above a bottom seal.

FIG. 8 is a plan view of the airtight material in FIG. 7;

FIG. 9 is a side view of FIG.

FIG. 10 is a sectional view of an airtight electromagnetic wave shielding material.

FIG. 11 is a side view of FIG. 10;

FIG. 12 is a sectional view of an airtight electromagnetic wave sealing material.

FIG. 13 is a side view of FIG.

FIG. 14 is a perspective view showing a relationship between an electromagnetic wave and a building.

FIG. 15 is a side sectional view showing a step of joining the end portions of the electromagnetic wave shielding material.

FIG. 16 is a side sectional view showing an end joining step of the electromagnetic wave shielding material.

FIG. 17 is a side sectional view showing an end joining step of the electromagnetic wave shielding material.

FIG. 18 is a side sectional view showing an end joining step of the electromagnetic wave shielding material.

FIG. 19 is a side sectional view showing an end joining step of the electromagnetic wave shielding material.

FIG. 20 is a side sectional view showing an end joining step of the electromagnetic wave shielding material.

FIG. 21 is a side sectional view showing an end joining step of the electromagnetic wave shielding material.

FIG. 22 is an enlarged sectional view taken along line BB of FIG. 3, showing another embodiment of the soundproof door shielded by electromagnetic waves.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building 21 Core material 22 Wire mesh 23 Adhesive 24 Airtight electromagnetic wave shielding material 26 Cut 27,28 Adhesive 65,66 Door 73,85 Airtight electromagnetic wave shielding material

Claims (8)

(57) [Claims] 1. An electromagnetic wave shielding material in which the outer periphery of a core of an elastic member of a strip is covered with a wire net over its entire length, wherein the core and the wire mesh are fixed by an adhesive at the outer periphery of an end of the strip. Electromagnetic wave shielding material. 2. The electromagnetic wave shielding material according to claim 1, wherein the core material and the wire mesh are fixed only at one end. 3. The electromagnetic wave shielding material according to claim 1, wherein a core material and a wire mesh are fixed at both ends. 4. In a connection structure for an electromagnetic wave shielding material in which ends are connected by abutting an electromagnetic wave shielding material in which an outer periphery of a core material of an elastic member of a strip is covered with a wire net over the entire length, ends of both electromagnetic wave shielding materials to be connected are connected. A connection structure for an electromagnetic wave shielding material, wherein a core material and a wire mesh are fixed on an outer periphery with an adhesive, and ends of both electromagnetic wave shielding materials are joined. 5. A connection structure of an electromagnetic wave shielding material in which an outer periphery of a core material of an elastic material of a strip is joined to an electromagnetic wave shielding material covered with a wire net over its entire length and one end of the electromagnetic wave shielding material is connected to the core. The outer periphery of the end portion of the material and the wire mesh is bonded, and the core material at the other end of the electromagnetic wave shielding material is
The wire mesh at the other end of the electromagnetic wave shielding material is abutted against one end of the electromagnetic wave shielding material, extends from the core material end, is covered with the wire mesh at one end of the electromagnetic wave shielding material, and A connection structure for an electromagnetic wave shielding material, wherein the core material and the wire net at the other end of the electromagnetic wave shielding material are fixed with an adhesive. 6. A method for joining ends of an electromagnetic wave shielding material covered with a wire mesh over the entire length of an outer periphery of a core material of an elastic member of a strip material, and connecting the ends with only one end of the electromagnetic wave shielding material. It is fixed with an adhesive, and the other end of the electromagnetic wave shielding material overlaps with the one end of the electromagnetic wave shielding material, and the wire mesh end from the core material end of the other electromagnetic wave shielding material is overlapped. The core material is folded back so as to be exposed, and the other electromagnetic wave shielding material is covered on its own wire mesh, and the core material at the other end is brought into contact with the one end portion of the electromagnetic wave shielding material without excess or shortage. Cut and butt both ends of the core material of electromagnetic wave shielding material,
Return the folded portion of the wire mesh at the other end of the electromagnetic wave shielding material back to its original position and cover it over the wire mesh at one end of the electromagnetic wave shielding material, and at least wire mesh and core material at the other end of the electromagnetic wave shielding material. A method of connecting an electromagnetic wave shielding material, characterized by being fixed with an adhesive. 7. The method according to claim 7, wherein the folded back end of the wire mesh at the other end of the electromagnetic wave shielding material is restored, and then the wire mesh end and the wire mesh at one end of the electromagnetic wave shielding material are fixed with an adhesive. The method for connecting an electromagnetic wave shielding material according to claim 6. 8. A gasket provided with a double packing in an anticipated direction between an opening frame and a sash which opens and closes the inside of the opening frame, wherein one of the packings has a core material covered with a wire mesh. An electromagnetic wave shielding material , wherein a core
Airtight electromagnetic wave seal with material and wire mesh fixed with adhesive
An acoustically shielded sash with an electromagnetic wave shield, which is fitted with a metal material .