JPH01150399A - Shielding panel for panel system shielding room - Google Patents

Abstract

PURPOSE:To contrive to provide shielding panels with a high vibration absorbing function by a method wherein each shielding panel is constituted of metal plates disposed in facing relation to each other, a buffer material interposed between these metal plates and edge members interposed between the end parts of a pair of the metal plates. CONSTITUTION:A pair of metal plates 23 and 23 of each shielding panel are disposed in opposition to each other at a constant interval. A buffer material 27 consisting of a paper honeycomb or a foaming urethane and so on, for example, is interposed between these plates 23 and 23. Moreover, edge members 29 consisting of a plywood or a compressed wood fiber and so on, for example, are each interposed between the end parts of the plates 23 and 23. Thereby, when an earthquake force P acts on the shielding panels 31, the plates 23 of the panels 31 are deformed, wrinkles 33 are produced on the plates 23, the force P is absorbed by these wrinkles 33 and a stress to act on the joints of the panels can be reduced. Accordingly, the formation of gaps never occurs in the joints.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shield panel for a panel-type shielded room, and particularly to a shield panel for a panel-type shielded room with improved earthquake resistance.

[Conventional technology]

BACKGROUND ART The development of electronic technology in recent years and the accompanying expansion of electronic devices into various fields are remarkable.

On the other hand, electromagnetic interference (EMI) due to electromagnetic waves generated by these devices or electromagnetic waves entering from other sources has become a major social problem.

Recently, this type of shielded room has become necessary for electromagnetic and radio wave measurements, including countermeasures against electromagnetic interference.

FIG. 14 shows a panel-type shield room in which this type of shield room is constructed by connecting shield panels. This panel-type shield room consists of a joint member (hereinafter referred to as They are connected by a joint (referred to as a joint) 13 to form a side wall surface 15 and a ceiling surface 17.

FIG. 15 shows details of the shield panel 11.
This shield panel 11 is constructed by interposing a core material 21 made of plywood or compressed wood fiber between metal plates 19 that are arranged facing each other at a constant interval.

[Problem that the invention seeks to solve]

However, in such a conventional shield panel 11, since the core material 21 interposed between the pair of metal plates 19 is made of plywood or compressed wood fiber with a relatively high specific gravity,
It is difficult to increase the size of the shield panel 11 due to the heavy weight of the shield panel 11 and problems with transportation or assembly. Conventionally, a panel type was used in which a large number of relatively small shield panels 11 were connected by joints 13. Since the shield room is assembled, there is a problem that the efficiency of the assembly work is low.

Further, in the conventional shield panel 11, a pair of metal plates 1
Since the core material 21 interposed between the panels 9 is made of relatively rigid plywood or compressed wood fiber, the rigidity of the shield panel 11 is extremely high. For example, as shown in FIG. When the seismic force P acts, the shield panel 11 cannot absorb the vibration, stress concentrates on the joint 13, a gap is formed in the joint 13, the electromagnetic shield is destroyed, and the performance is extremely degraded. There was a problem.

[Purpose of the invention]

The present invention was made to solve such problems,
It is an object of the present invention to provide a shield panel for a panel-type shield room that can significantly reduce the specific gravity of the shield panel compared to the conventional one and has high vibration absorption ability.

[Means for solving problems]

The shield panel for a panel type shield room according to the present invention is a panel type shield room in which a plurality of shield panels for shielding electromagnetic waves are connected by a joint member to form at least a side wall surface and a ceiling surface. It is composed of metal plates facing each other at a constant interval, a cushioning material interposed between these metal plates, and an edge member interposed at the ends of the pair of metal plates.

[Action of the invention]

In the present invention, the shield panel is made up of metal plates facing each other at regular intervals, a cushioning material interposed between these metal plates, and an edge member interposed at the ends of the pair of metal plates. With this configuration, when an earthquake force acts on the shield panel, the shield panel wrinkles, and the vibration is absorbed by the shield panel.

[Embodiments of the invention]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, details of the present invention will be described with reference to an embodiment shown in the drawings.

1 and 2 show an embodiment of the shield panel for a panel-type shield room of the present invention. In the figures, reference numbers 23 and 25 are arranged facing each other at regular intervals, for example, steel plates. It shows a pair of metal plates consisting of.

A cushioning material 27 made of, for example, paper honeycomb or foamed urethane is interposed between these metal plates 23 and 25.

Furthermore, an edge member 29 made of, for example, plywood or compressed wood fiber is interposed at the ends of the pair of metal plates 23 and 25.

In the panel-type shield panel for a shield room constructed as described above, since the cushioning material 27 made of paper honeycomb or foamed urethane is interposed between the pair of metal plates 23, the shield panel 31 is When the seismic force P acts on the metal plate 23 of the shield panel 31
is deformed and wrinkles 33 are formed in the metal plate 23, and the earthquake force P is absorbed by the wrinkles 33, making it possible to significantly reduce the stress acting on the joint compared to the conventional method.

This eliminates the formation of gaps in the joints and improves the initial shielding performance of the panel type shield room.

In addition, in the panel-type shield panel for a shield room configured as described above, since the cushioning material 27 made of paper honeycomb or foamed urethane is interposed between the pair of metal plates 23, the specific gravity is lower than that of the conventional shield panel. This makes it possible to significantly reduce the amount of damage, making it possible to easily increase the size of the shield panel, and greatly improving the workability of assembling a panel type shield room compared to the conventional method.

By the way, the conventional shield panel 11 shown in FIG.
In this example, the unit weight was approximately 25 kg/rrf, but in the shield panel 31 of this embodiment, the unit weight was approximately 10 kg/rrf.
g/rrr, which is significantly lower than before.

In addition, the width of the conventional shield panel is 1.2m.

The maximum length was about 2.4 m, but in the present invention, the width is 1 m.
．． It becomes possible to easily make a shield panel with a length of about 2 m and a length of about 6.0 m.

FIG. 4 shows an example of a panel-type shield room using shield panels configured as described above. In the figure, reference numeral 41 indicates a plurality of shield panels 43 for shielding electromagnetic waves connected by a joint 45. Side wall surface 47
A panel type shield room is shown in which a ceiling surface 49 is formed.

This panel type shield room 41 has, for example, a height A of 3 m, a width B of 2.4 m, and a length C of 3.6 m.

In this panel type shield room 41, a corner 51 formed by the side wall surfaces 47 and a corner 53 formed by the side wall surface 47 and the ceiling surface 49 or the floor surface 67 has a cross-sectional shape It is formed by a corner panel 55 that is integrally formed in the shape.

In addition, two side wall surfaces 47 and a ceiling surface 49 or a floor surface 6
A corner 57 formed by 7 is formed by a corner panel 59 having an eave portion integrally formed at the end of a member having an L-shaped cross section.

This panel type shield room 41 has a corner panel 55
and the width except for the corner panel 59, for example, 1.2
It is composed of a plurality of standard panels 61 with a length of 2.4 m and a length of 2.4 m.

One of the standard panels 61 is a door built-in panel,
A door 63 for loading and unloading is arranged on this panel 61.

Further, a power supply outlet 65 is arranged on the other one of the standard panels 61.

Furthermore, the standard panel 6I placed on the ceiling surface 49 includes
Hanging bolts 63 for supporting the panel type shield room 41 are arranged.

5 and 6 show the details of the corner panel 55, which consists of a pair of metal plates 71 bent in a cross-sectional shape and arranged facing each other at a constant interval. A cushioning material 73 is interposed between the metal plates 71 such as, and an edge member 75 is interposed at the ends of the pair of metal plates 71,
Further, a space formed at the corner of the pair of metal plates 71 is configured as a cavity 77.

In this embodiment, the metal plate 71 is made of steel, the cushioning material 73 is made of paper honeycomb or urethane foam, and the edge member 75 is made of wood.

FIGS. 7 and 8 show details of the corner panel 79, which is constructed by integrally forming an eaves portion 81 at the end of a member having an L-shaped cross section.

The corner panel 79 has a cross-sectional shape that is substantially the same as the corner panel 55 shown in FIG.
A pair of metal plates 83 constituting the unit are fixed by welding or the like to one side end of a member having an L-shaped cross section.

FIG. 9 shows details of the planar joint 45 used to connect the corner panel 55 and the corner panel 59 with the standard panel 61. The planar joint 45 has its ends facing each other with a predetermined gap. A long inner shielding plate 88 and an outer shielding plate 89 are abutted on the indoor side surface 86 and the outdoor side surface 87 of the pair of shield panels 43, respectively, straddling the pair of shield panels 43, and these inner shielding plates 88 and an outer shielding plate 89 are connected by bolts 90, and tooth patterns 91 are formed at the portions of the inner shielding plate 88 and the outer shielding plate 89 that contact the shield panel 43.

Further, as shown in FIG. 10, the inner shielding plate 88 is formed into a curved or U-shaped shape with a central portion protruding toward the side opposite to the shield panel 43.

FIG. 11 shows details of the hanging tool 63 arranged on the ceiling surface 49. This hanging tool 63 has a threaded part 92 inserted into a through hole formed in the shield panel 43, and shields the seat part 93. It has a hanging bolt 94 that comes into contact with the indoor side surface 86 of the panel 43, and the shield panel 430 has an outdoor side surface 87.
A seat plate 95 is in contact with the seat plate 95 . And this seat board 9
5 is a nut 96 that is screwed into the threaded portion 92 of the hanging bolt 94;
is pressed toward the shield panel 43 side.

Incidentally, a tooth pattern 97 is formed on the seat portion 93 of the hanging bolt 94 and the contact portion of the seat plate 95 with the shield panel 43, respectively.

In the panel-type shield room configured as above,
a corner 51 formed by the side wall surface 47;
A corner 51 formed by the side wall surface 47 and the ceiling surface 49 is formed by a corner panel 55 integrally formed with a cross-sectional shape, and the two side wall surfaces 47 and the ceiling surface 49 or the floor surface 67 The corner 57 formed by
Since it is formed by a corner panel 59 with an eaves part 81 integrally formed on one side end of a member having an L-shaped cross section, there is no need for a corner joint to connect the shield panels located at the corners. It is possible to reliably prevent destruction of the electromagnetic shield due to deformation of the corner joint.

In addition, in the panel-type shield room configured as described above, the hollow portions 77 are formed at the corners of the corner panel 55 and the corner panel 590, so that in the event of an earthquake, the corner panel 55 and the corner panel 59 are It becomes possible to easily deform as shown by the dotted line in Figure 13, and it becomes possible to effectively absorb the vibrations that act on the panel-type shield room due to an earthquake.

Furthermore, in the panel type shield room configured as described above, the standard panel 61. Since a cushioning material 73 made of paper honeycomb or foamed urethane is interposed between the pair of metal plates 71 constituting the corner panel 55 and the corner panel 59, the shield panel 4
When the seismic force P acts on the joint 45, the metal plate 71 of the panel is deformed and wrinkled, and the seismic force is absorbed by the wrinkles, which greatly reduces the stress acting on the joint 45 compared to before. can do.゛In addition, in the panel type shield room configured as described above, the inner shielding plate 88 and the outer shielding plate 89 that constitute the joint 45 are
Since a tooth pattern is formed on each of the inner shielding plate 88 and the outer shielding plate 89, the inner shielding plate 88 and the outer shielding plate 89 are attached to the shield panel 43 with bolts 90.
When tightened, the inner shielding plate 88 and the outer shielding plate 89
Since the tooth pattern 91 bites into the shield panel 43, the shielding effect can be significantly improved compared to the conventional one.

Furthermore, in the panel-type shield room configured as described above, the seat 9 of the hanging bolt 94 constituting the hanging tool 63 is
3 and the seat plate 95 respectively, so that
When the seat part 93 and the seat plate 95 are tightened to the shield panel 43, the teeth 97 of the seat part 93 and seats Fi, 95 will bite into the shield panel 43, so that the shield panel 43 can be penetrated without impairing the shielding effect. It becomes possible to form a hole, and a hanging tool 63 with a large hanging force can be obtained.

〔Effect of the invention〕

As described above, in the present invention, a shield panel for a panel-type shielded room includes: gold R plates facing each other at regular intervals, a cushioning material interposed between these metal plates, and a pair of metal plates. and an edge member interposed at the end of the shield panel, the specific gravity of the shield panel can be significantly reduced compared to the conventional shield panel, and it is also possible to provide a shield panel for a panel-type shield room with high vibration absorption capacity. It has the advantage of being possible.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the panel-type shield panel for a shield room of the present invention. FIG. 2 is a longitudinal cross-sectional view of the shield panel for the panel-type shielded room shown in FIG. 1, taken along line UM. FIG. 3 is an explanatory diagram showing a state when an earthquake force acts on the shield panel for the panel type shield room shown in FIG. 1. FIG. 4 is a perspective view showing a panel type shield room using the panel type shield room shield panel of the present invention. FIG. 5 is a perspective view of the corner panel shown in FIG. 4. FIG. 6 is a cross-sectional view of the corner panel shown in FIG. 5. FIG. 7 is a perspective view of the corner panel shown in FIG. 4. FIG. 8 is a cross-sectional view of the corner panel shown in FIG. 7. FIG. 9 is a cross-sectional view showing the joint shown in FIG. 4. FIG. 10 is a cross-sectional view showing the inner shielding plate of the joint shown in FIG. 9. FIG. 11 is a cross-sectional view of the hanging tool shown in FIG. 4. FIG. 12 is a top view showing the hanging bolt of the hanging tool shown in FIG. 11. FIG. 13 is a cross-sectional view showing a modification of the corner panel shown in FIG. 4. FIG. 14 is an explanatory diagram showing a conventional panel type shield room. FIG. 15 is a cross-sectional view showing a conventional panel-type shield panel for a shield room. FIG. 16 is an explanatory diagram showing a modification of the shield panel for the panel type shield room shown in FIG. 15. (Explanation of symbols of main parts) 23... Metal plate 27... Cushioning material 29... Edge member. Figure 1 Figure 2 Figure 11 Figure 12 Figure 13 Figure 14

Claims (3)

[Claims] (1) In a panel-type shield room in which a plurality of shield panels for shielding electromagnetic waves are connected by a joint member to form at least a side wall surface and a ceiling surface, the shield panels are made of metal arranged facing each other at regular intervals. 1. A shield panel for a panel-type shielded room, comprising a plate, a cushioning material interposed between the metal plates, and an edge member interposed at the ends of the pair of metal plates. (2) The shield panel for a panel-type shield room according to claim 1, wherein the cushioning material is made of paper honeycomb or urethane foam. (3) The shield panel for a panel type shield room according to claim 1 or 2, wherein the edge member is made of wood.