JPH11181911A - Electromagnetic wave shield panel and electromagnetic wave shield wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To resist fire and absorb sound by a panel so as to simply improve an electromagnetic wave shield wall by forming an electric wave absorbing plate of which main material is artificial mineral fiber, heat insulating material of electrical insulating material, and many holes on the back of a metal plate, and laminating a face plate in this order. SOLUTION: A metal plate 1 is formed by rolling and lined with an electric wave absorbing plate 2, and heat insulating material 3 is charged on the back of the metal plate 1. Next, a punching metal 4b is laminated on the back of the heat insulating material 3, and hence an electromagnetic wave shield panel A is obtained. Hereat, sound wave passed through the holes 4a of a face plate 4 is damped by the heat insulating material 3 and the electric wave absorbing plate 2, and noise reduction is performed. Electromagnetic wave entering through the holes 4a is taken in by the electric wave absorbing plate 2 to aborb the energy, the energy is consumed as heat, and electromagnetic wave shield is made possible. A conductive packing 7 is interposed between the conductive parts 9, 9 of a fitting projecting part 5 and a fitting recessed part 6, and the metal plates 1, 1 are electrically connected to each other. Hereby, while resisting fire and reducing noise, the function as the electromagnetic wave shield wall is obtained, and it can be made effective for the wall panel of a hospital or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic wave shield panel and an electromagnetic wave shield wall, and more particularly, to an electromagnetic wave shield panel with a simple improvement while improving fire resistance and sound absorption by a panel and performing good electromagnetic wave shield. It is related to the technology to be attempted.

[0002]

2. Description of the Related Art In recent years, there is a possibility that an electromagnetic wave is inputted as a control signal from another device to a control device and erroneous control is performed. For this reason, each control device is provided with an electromagnetic wave shielding means and a control device. Electromagnetic wave shielding means is provided to prevent external electromagnetic waves from entering the walls of the room in which the devices are stored.

[0003] Hospitals and the like equipped with various control devices tend to prohibit the use of mobile phones that emit electromagnetic waves, and are currently suffering from electromagnetic interference.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object the purpose of improving the fire resistance and sound absorption of a panel and providing good electromagnetic wave shielding while improving the electromagnetic wave shielding. Making effective use of the connection structure of the heat insulation panel using a metal plate on the surface,
An object of the present invention is to provide an electromagnetic wave shield panel and an electromagnetic wave shield wall which can perform an electromagnetic wave shield on a wall with a simple improvement.

[0005]

According to the first aspect of the present invention, a plurality of radio wave absorbing plates 2 mainly made of artificial mineral fibers, a heat insulating material 3 of an electrically insulating material, and a large number of perforations 4a are formed on the back surface of the metal plate 1. It is characterized in that the face plates 4 are laminated in this order. According to a second aspect, the face plate 4 is a punched metal 4b.

According to a third aspect of the present invention, the face plate 4 is a radio wave absorbing plate 2 mainly composed of artificial mineral fibers. In the fourth aspect, the metal plate 1 is bent to form the fitting projection 5, and the other end is formed with the fitting recess 6, so that the fitting projection 5 and a part of the fitting recess 6 are electrically conductive. The feature is that it is constituted as a part 9.

According to a fifth aspect of the present invention, a radio wave absorbing plate 2 mainly composed of artificial mineral fibers, a heat insulating material 3 of an electrically insulating material, and a face plate 4 having a large number of perforations 4a formed on the back surface of the metal plate 1.
Are laminated in this order, and the metal plate 1 is bent to form a fitting protrusion 5 and a fitting recess 6 is formed at the other end. An electromagnetic wave shield panel A is formed as the conductive portion 9, and the electromagnetic wave shield panels A, A are connected by interposing a conductive packing 7 between the conductive portions 9, 9 of the fitting protrusion 5 and the fitting recess 6. It is characterized by comprising.

In the sixth aspect, a radio wave absorbing plate 2 mainly made of artificial mineral fibers, a heat insulating material 3 of an electrically insulating material, and a face plate 4 having a large number of perforations 4a formed on the back surface of the metal plate 1.
Are laminated in this order, and the face plate 4 is formed of substantially the same material as the radio wave absorption plate 2 to form an electromagnetic wave shield panel A.
Intermediate piece 1 at the back of conductive cap 10 having a substantially T-shaped cross section
1 is interposed between the radio wave absorbing plates 2 and 2, and
Is characterized in that the connection plates 12 which are substantially orthogonal are pressed against the end surfaces of the radio wave absorption plates 2 and 2 to connect the electromagnetic wave shield panels A and A.

(Action) In the first aspect, the sound wave passing through the large number of perforations 4a of the face plate 4 is attenuated by the heat insulating material 3 and the radio wave absorbing plate 2 mainly made of artificial mineral fibers, thereby providing fire resistance and silencing. While being able to pierce 4
The electromagnetic waves entering from a ... are taken in without being reflected by the radio wave absorption plate 2, absorb the energy thereof, and are consumed as heat to form an electromagnetic wave shield.
By grounding the metal plate 1, the function of an electromagnetic wave shielding wall can be obtained, which is effective for a wall panel in a hospital or the like.

According to the second aspect, the strength of the electromagnetic wave shield panel can be increased by the metal plate 1 and the punching metal 4b. In claim 3, the metal plate 1
The radio wave absorbing function and the noise canceling function can be further enhanced by the synergistic effect of the radio wave absorbing plate 2 on the back surface and the radio wave absorbing plate 2 on the back surface of the panel. According to the fourth aspect, the electromagnetic shielding panels A, A adjacent to each other are electrically connected by the conductive packing 7 by effectively utilizing the fitting protrusions 5 and the fitting recesses 6 formed by bending the metal plate 1. Can be simplified as compared with a configuration in which each of the electromagnetic wave shield panels A is grounded.

According to the fifth aspect, in addition to the function of the first aspect, the electromagnetic wave shield configuration can be simplified as compared with the configuration in which each of the electromagnetic wave shield panels A is grounded. In the sixth aspect, the interposition piece 11 of the conductive cap 10 electrically conducts between the end faces of the radio wave absorbing plate 2, and the connection plate 12 of the conductive cap 7 electrically connects the surface of the radio wave absorbing plate 2. Can be electrically connected to each other, and the electromagnetic wave absorbing plate 2 can be reliably electrically connected by the conductive cap 10, and the electromagnetic wave shielding configuration is simplified as compared with a configuration in which each of the electromagnetic wave shielding panels A is grounded. can do.

[0012]

(Embodiment 1) FIG. 1 (a)
FIG. 2B is a perspective view of the electromagnetic wave shield panel A, and FIG.
FIG. 2B is an explanatory view of the conductive portion 9 of the metal plate 1 of the electromagnetic wave shield panel A, FIG. 2B is a perspective view of means for forming the conductive portion 9, and FIG.

The electromagnetic wave shield panel A has a radio wave absorbing plate 2 mainly composed of artificial mineral fibers laminated on the back surface of a metal plate 1 and a rock wool material which is an electrically insulating material is used on the back surface of the radio wave absorbing plate 2. The heat insulating material 3 is laminated, and further, the heat insulating material 3 is lined with a face plate 4 having a plurality of perforations 4a formed on the back surface. The face plate 4 is a punched metal 4b in which a large number of perforations 4a are formed in a metal plate 8.

The metal plate 1 is bent at one end of the electromagnetic wave shield panel A to form a fitting projection 5 at an intermediate portion in the thickness direction of the panel, and the metal plate 1 is bent and fitted at the other end. Forming a fitting recess 6 to be fitted to the protrusion 5, and forming the fitting protrusion 5 and the fitting recess 6
The electromagnetic wave shield panels A, A can be connected to each other. A nailing recess 15 is formed on the surface of the electromagnetic wave shield panel A on the side of the fitting protrusion 5, and the covering piece 16 extends on the surface of the fitting recess 6,
Driving the fixture 13 into the nailing recess 15 to fix it,
The nailing point is covered and covered with a cover piece 16.

At both ends of the electromagnetic wave shield panel A, a heat insulating material 3 exists between the metal plate 1 and the metal plate 8 to electrically insulate the metal plate 1 and the metal plate 8.
The electromagnetic wave absorbing plate 2 absorbs the incident electromagnetic wave without reflecting it, absorbs its energy, and consumes it as heat. The electromagnetic wave absorbing plate 2 mainly made of artificial mineral fibers to which carbon particles are added is an electric wave absorbing plate. This is to take advantage of physical loss. For example, it is an artificial mineral fiber sheet such as rock wool or glass wool containing 1 to 2.5 g / liter of carbon, but may have other specifications.

FIG. 2A shows an electrically conductive portion 9 of the metal plate 1.
FIG. 2B is a schematic perspective view of an apparatus for forming the conductive portion 9. A method for forming the conductive portion 9 when a painted steel plate is used as the metal plate 1 will be described. The metal plate 1 is fed from a feeding roll (not shown), and a coating material 18 of an electrically insulating material is applied to an intermediate portion in the width direction by an application roll device 17, and the coating material 18 is applied to both ends of the metal plate 1 in the width direction. The metal plate 1 not coated with is exposed to form the conductive portions 9.

The coating roll device 17 is of a two-roll type consisting of a pick-up roll 19 and an applicator roll 20. A part of the pick-up roll 19 is immersed in a paint pan 21 in which the paint 18 is stored. With the rotation, the paint 18 is attached from the paint pan 21 and pulled up, the paint 18 of the pickup roll 19 is transferred to the applicator roll 19, and the paint 18 is applied to the metal plate 1.
Is configured to be applied to the intermediate portion. The application roll device 17 may be of a three-roll type. By the way, in order to form the conductive portion 9, the paint 18 may be applied to the entire surface, and then the paint 18 at a necessary portion may be scraped off.

Incidentally, the metal sheet 1 may be a hot-dip galvanized steel sheet or a colored hot-dip galvanized steel sheet. The metal plate 1 is formed by a roll forming apparatus as shown in FIG.
As shown in (a), the radio wave absorbing plate 2 is backed by roll forming, and thereafter, a heat insulating material 3 such as a rock wool material is loaded on the back of the metal plate 1, and a punching metal 4 b is placed on the back of the heat insulating material 3. The electromagnetic wave shield panel A is obtained by stacking. The fitting projection 5 and the fitting recess 6 are filled with a calcium silicate material 22.

The sound waves passing through the many perforations 4a of the face plate 4 are attenuated by the heat insulating material 3 and the radio wave absorbing plate 2 mainly composed of artificial mineral fibers, so that sound can be eliminated. Electromagnetic waves that have entered through the perforations 4a are taken in without being reflected by the radio wave absorbing plate 2, absorb their energy, and are consumed as heat to form an electromagnetic wave shield.

In this case, a conductive packing 7 is interposed between conductive portions 9, 9 of the fitting projections 5 and the fitting recesses 6 of the adjacent electromagnetic wave shielding panels A, A, so that the metal plates 1, 1 are connected to each other. Are electrically connected to each other to connect the electromagnetic wave shield panels A, A by fitting the concave and convex. As the conductive packing 7,
For example, Kitagawa Kogyo Co., Ltd. has a product called "Elasto Mesh" which is made of silicone or neoprene as a core material, and is covered with a conductive wire mesh formed by knitting a wire into a mesh. Anything may be used.

(Embodiment 2) FIG. 3 shows Embodiment 2 of the present invention. However, the basic configuration of the present embodiment is the same as that of the first embodiment, and the common components are denoted by the same reference numerals and description thereof is omitted. As shown in FIG. 3, it has the same material and the same specifications as the radio wave absorption plate 2 in which the face plate 4 is laminated on the back surface of the metal plate 1. The conductive cap 10 has a substantially T-shaped cross section, and is formed of substantially the same material as the radio wave absorbing plate 2.

As shown in FIG. 4, the interposition piece 11 on the back of the conductive cap 10 is interposed between the radio wave absorbing plates 2 and 2, and the connection plate 12 substantially orthogonal to the interposition piece 11 is formed. The electromagnetic wave shield panels A, A are electrically connected by pressing against the end surfaces of the radio wave absorbing plates 2, 2. by the way,
The conductive cap 10 may be made of a different material from the radio wave absorbing plate 2. In the figure, reference numeral 13 denotes a watertight packing.

On the face plate 4 side of the back surface of the electromagnetic wave shield panel A, the end faces of the radio wave absorbing plates 2 and 2 are formed by the interposition piece 11 of the conductive cap 10 having the same material as the radio wave absorbing plate 2 and having a substantially T-shaped cross section. There is electrical continuity between them. In addition, the connection plate 12 of the conductive cap 10 allows the radio wave absorption plates 2, 2
Are electrically connected to each other. Thus, the radio wave absorbing plates 2 and 2 can be reliably electrically connected by the conductive cap 10, and the electromagnetic wave shielding configuration is simplified as compared with the configuration where each of the electromagnetic wave shielding panels A is grounded.

[0024]

According to the first aspect of the present invention, a radio wave absorbing plate mainly composed of artificial mineral fibers, a heat insulating material of an electrically insulating material, and a face plate having a large number of perforations are laminated on the back surface of the metal plate in this order. Therefore, sound waves passing through many perforations in the face plate are attenuated by a radio wave absorbing plate mainly made of heat insulating material and artificial mineral fibers, and while being able to perform fire resistance and silencing, electromagnetic waves entering from the perforations are Absorb and absorb the energy without reflection
Electromagnetic wave shielding can be performed by consuming as heat, and furthermore, by grounding a metal plate, the function of an electromagnetic wave shielding wall can be obtained, which is advantageous in that it is effective for wall panels in hospitals and the like.

According to the second aspect, since the face plate is made of perforated metal, there is an advantage that the strength of the electromagnetic wave shielding panel can be increased by using the metal plate and the perforated metal. In claim 3, since the face plate is a radio wave absorption plate mainly made of artificial mineral fibers, the radio wave absorption plate and the sound absorption function are further enhanced by the synergy between the radio wave absorption plate on the back surface of the metal plate and the radio wave absorption plate on the back surface of the panel. There is an advantage that it can be increased.

According to a fourth aspect of the present invention, the metal plate is bent to form a fitting projection and a fitting recess is formed at the other end, and a part of the fitting projection and the fitting recess is used as a conductive portion. Therefore, by effectively utilizing the fitting protrusion and the fitting recess formed by bending the metal plate, it is possible to electrically connect the adjacent electromagnetic wave shield panels by conductive packing,
There is an advantage that the electromagnetic wave shield configuration can be simplified as compared with a configuration in which each of the electromagnetic wave shield panels is grounded.

According to a fifth aspect of the present invention, a radio wave absorbing plate mainly composed of artificial mineral fibers, a heat insulating material of an electrically insulating material, and a face plate having a large number of perforations are laminated on the back surface of the metal plate in this order. Are bent to form a fitting projection, and a fitting recess is formed at the other end. An electromagnetic wave shielding panel is formed by using the fitting projection and a part of the fitting recess as conductive parts. The electromagnetic wave shield panel is connected by interposing a conductive packing between the conductive portion of the electromagnetic wave shield panel and the fitting recess, so that in addition to the effect of claim 1, the electromagnetic wave shield panel is compared with a configuration in which each of the electromagnetic wave shield panels is grounded. There is an advantage that the shield configuration can be simplified.

According to a sixth aspect of the present invention, a radio wave absorbing plate mainly composed of artificial mineral fibers, a heat insulating material of an electrically insulating material, and a face plate having a large number of perforations are laminated in this order on the back surface of the metal plate. The electromagnetic wave shield panel is formed by using substantially the same material as the radio wave absorption plate, and the interposition piece at the back of the conductive cap having a substantially T-shaped cross section is interposed between the radio wave absorption plates and the interposition piece is Since the electromagnetic wave shield panel is connected by pressing a substantially orthogonal connection plate against the end surface of the radio wave absorption plate, the interposition piece of the conductive cap having a substantially T-shaped cross section electrically connects the end surfaces of the radio wave absorption plate. Electrically conductive, and the connection plate of the conductive cap can electrically connect the surfaces of the radio wave absorbing plates, and the conductive cap can reliably connect the radio wave absorbing plates electrically, Each of the shield panels There is an advantage that it is possible to simplify the electromagnetic wave shielding structure in comparison with the configuration in which over scan.

[Brief description of the drawings]

FIG. 1 shows Embodiment 1 of the present invention, and (a) and (b) are perspective views.

2A is an explanatory view showing a conductive part, FIG. 2B is a schematic perspective view of a coating roll device, and FIG. 2C is an explanatory view showing a conductive part.

FIGS. 3A and 3B show a second embodiment, and FIGS. 3A and 3B are perspective views.

FIG. 4 is a sectional view after connection.

FIG. 5 is an explanatory view showing a conductive portion.

[Explanation of symbols]

 Reference Signs List A electromagnetic wave shield panel 1 metal plate 2 radio wave absorption plate 3 heat insulating material 4 face plate 4a perforation 4b punching metal 5 fitting protrusion 6 fitting recess 7 conductive packing 9 conductive portion 10 conductive cap 11 interposition piece 12 connection plate

Claims (6)

[Claims] 1. An electromagnetic wave comprising: a radio wave absorbing plate mainly made of artificial mineral fibers, a heat insulating material of an electrically insulating material, and a face plate having a large number of perforations laminated on a back surface of a metal plate in this order. Shield panel. 2. The electromagnetic wave shielding panel according to claim 1, wherein the face plate is made of punched metal. 3. The electromagnetic wave shield panel according to claim 1, wherein the face plate is a radio wave absorbing plate mainly made of artificial mineral fibers. 4. The method according to claim 1, wherein the metal plate is bent to form a fitting protrusion and a fitting recess is formed at the other end, and a part of the fitting protrusion and the fitting recess is formed as a conductive portion. The electromagnetic wave shield panel according to any one of claims 1 to 3, wherein: 5. A radio wave absorbing plate mainly composed of artificial mineral fibers, a heat insulating material of an electrically insulating material, and a face plate having a large number of perforations are laminated on the back surface of the metal plate in this order, and the metal plate is bent. An electromagnetic wave shielding panel is formed by forming a fitting protrusion and forming a fitting recess at the other end, and using a part of the fitting protrusion and the fitting recess as a conductive portion, and forming the fitting protrusion and the fitting recess. An electromagnetic wave shield wall comprising an electromagnetic wave shield panel connected with a conductive packing interposed between the conductive portions of the electromagnetic wave shield panel. 6. A radio wave absorbing plate mainly composed of artificial mineral fibers, a heat insulating material of an electrically insulating material, and a face plate having a large number of perforations are laminated on the back surface of the metal plate in this order. An electromagnetic wave shield panel is formed by using substantially the same material, and an interposition piece at the back of the conductive cap having a substantially T-shaped cross section is interposed between the radio wave absorbing plates and connected substantially orthogonal to the interposition piece. An electromagnetic wave shielding wall comprising a plate pressed against an end surface of a radio wave absorbing plate and an electromagnetic wave shielding panel connected thereto.