JP2529614B2 - Electromagnetic shield floor - Google Patents

Description

TECHNICAL FIELD The present invention relates to an electromagnetic shield floor.

[Prior Art] In recent years, in office buildings and the like, data transmission from a host computer to terminals installed on each floor, information transmission by telephone, and the like are performed wirelessly. When performing such wireless information transmission, not only is it necessary to electromagnetically shield the building from the outside in order to prevent the transmission of information from being blocked by other electromagnetic waves,
It is necessary to electromagnetically shield each floor as well.

However, reinforced concrete structures such as RC structures and SRC structures that construct buildings have the property of allowing electromagnetic waves to pass through well.Therefore, electromagnetic shielding materials have traditionally been used to prevent electromagnetic interference in walls, windows, and other openings and floors. It is shielding. That is,
As shown in FIG. 7, in the wall 102 and the window 103, the electromagnetic shielding material 101 is arranged on the wall 102 and the window 103 to prevent the intrusion of electromagnetic waves from the outside, and the floor 104.
In this case, since a grounded deck plate 105 made of an iron plate is generally used on the floor 104, the deck plate 105 is used to perform electromagnetic shielding of the upper and lower floors.

[Problems to be Solved by the Invention] However, in the same floor, even if the electromagnetic shielding member 101 is provided on the wall 102 between the room and the room adjacent to the room, the electromagnetic shielding member 101 is provided as shown in FIG. Between the 101 and the deck plate 105 of the floor 104, there is an electromagnetic non-shielding structure in which there is only the concrete slab 104a, so there is a problem that electromagnetic waves leak through the concrete slab 104a to the adjacent room.

The present invention has been made in view of such problems, and an object thereof is to provide an electromagnetically shielded floor that can reliably shield electromagnetic waves even between rooms on the same floor.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides an electromagnetic shielding floor in which a grounded deck plate is embedded, and further an electromagnetic wave disposed on the deck plate and the wall. The electromagnetic shielding member connected to the shielding member is embedded in the electromagnetic shielding floor.

[Operation] In the electromagnetic shielding floor according to the present invention having such a configuration, the floor portion between the deck plate of the floor and the electromagnetic shielding member arranged on the wall has an electromagnetic shielding structure. Therefore,
Electromagnetic waves can be reliably shielded even between rooms on the same floor.

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

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a partially enlarged sectional view of FIG. In the figure, 1 is a wall, 2
Is an electromagnetic shield provided on the wall 1, 3 is a floor, 4 is a concrete slab, 5 is a deck plate, 6 is an electromagnetic shield provided on the floor, 7 is an upper reinforcing bar, and 8 is a lower reinforcing bar.

As shown in FIG. 1, an electromagnetic shielding member 2 is arranged on the wall 1, and the electromagnetic shielding member 2 shields an electromagnetic wave α entering the room B from the adjacent room A through the wall. In addition, the concrete floor 3 has a grounded deck plate 5
The deck plate 5 blocks the electromagnetic wave β entering the room A from the room A through the concrete floor 3 to the room below.

Further, an electromagnetic shielding member 6 is provided in the concrete slab 4 of the floor 3 located below the wall 1. As shown in detail in FIG. 3, this electromagnetic shield member 6 has a predetermined number of large spacers 6a made of an electromagnetic shield arranged in the longitudinal direction of the wall 1 and one large reinforcing bar 6b for connecting these large spacers. 6a are connected to each other, and a mesh member 6e made of an electromagnetic shielding material is fixed to this large spacer assembly. In that case, the mesh member 6e is provided so as to project a predetermined amount above the reinforcing bar 6b. Similarly, a predetermined number of small spacers 6c made of an electromagnetic shielding material are similarly arranged in the longitudinal direction of the wall 1 and connected to each other by one connecting bar 6d, and a mesh made of an electromagnetic shielding material is attached to the small spacer assembly. Fix the member 6f. In that case, the mesh member 6f is also provided so as to project a predetermined amount above the reinforcing bar 6d, and the lower portion of the mesh member 6e and the upper portion of the mesh member 6f overlap. In this way, the electromagnetic shielding member 6 is formed.

Next, a method of disposing the electromagnetic shielding member 6 in the concrete slab 4 of the floor 3 will be described with reference to FIG.

First, as shown in Fig. 4 (a), small spacers 6c and reinforcing bars
The mesh member 6f is fixed to the assembly with 6d. In that case,
The upper part of the mesh member 6f is projected above the reinforcing bar 6d. Next, as shown in FIG. 3B, the mesh member 6f
The small spacers 6c to which is fixed are fixed to the deck plate 5 by welding. Next, as shown in FIG. 7C, the lower reinforcing bar 8 is arranged and fixed to the reinforcing bar 6d of the small spacer 6c.

Next, as shown in FIG. 3D, the large spacer 6a and the reinforcing bar 6b are
The mesh member 6e is fixed to the assembly. In that case, the upper portion of the mesh member 6e is made to project above the reinforcing bar 6b. Next, as shown in FIG. 8E, the large spacer 6a to which the mesh member 6e is fixed is fixed to the deck plate 5 to which the small spacer 6c is fixed by welding. In that case,
The large spaces 6a and the small spacers 6c are arranged alternately. Further, the lower part of the mesh member 6e and the upper part of the mesh member 6f are made to overlap each other.

Next, as shown in FIG. 6F, the upper reinforcing bars 7 are arranged and fixed on the reinforcing bars 6b of the large spacers 6a, and then concrete pouring is performed as shown in FIG. To form. Finally, the mesh member 6e is connected to the runner member 9 provided at the lower end of the wall 1. The electromagnetic shielding member 2 of the wall 1 is also connected to the runner member 9, so that the electromagnetic shielding surface is integrally formed from the wall 1 to the floor 3.

Further, in the conventional case, when arranging the mesh members 6e, 6f in a floor structure having the lower rebars 7, 8, when arranging the upper and lower rebars 7, 8 after attempting to dispose the mesh members 6e, 6f. The mesh members 6e and 6f have to be cut open at the portions corresponding to the reinforcing bars, or installed as a piece at each pitch of the reinforcing bars. For this reason, not only is it very time-consuming, but it is not possible to obtain perfect electromagnetic shielding. On the other hand, according to the method of arranging the electromagnetic shielding member 6 using the large and small spacers 6a and 6c, the large and small spacers are provided in the portion that hits the reinforcing bar.
All that is required is to cut the connecting bars 6b and 6d of 6a and 6c, which not only greatly simplifies the work, but also provides complete electromagnetic shielding.

On the other hand, although not shown, similarly, an electromagnetic shielding surface is formed between the deck plate on the upper floor (corresponding to the ceiling) of the wall 1 and the upper end of the wall 1.

In the thus constructed electromagnetic shielding floor of the present embodiment, the electromagnetic shielding member 6 is arranged on the concrete slab 4 between the wall 1 and the floor 3 and each deck plate 5 of the upper floor (ceiling). Therefore, the space between the room B and the adjacent room A is completely electromagnetically shielded. Therefore, the electromagnetic wave γ entering from the adjacent A through the concrete slab 4 of the floor 3 is completely blocked, and the electromagnetic wave leaking from the room B into the adjacent A is also completely blocked.

The present invention is not limited to the above-mentioned embodiment, and various design changes can be made.

For example, in the above-described embodiment, the electromagnetic shielding member 6 is formed at the construction site, but the present invention can also preassemble the electromagnetic shielding member 6 in a factory or the like.

Further, in the above-mentioned embodiment, the case where the reinforcing bars embedded in the concrete slab 4 are arranged in two stages of the upper reinforcing bars 7 and the lower reinforcing bars 8 is explained, but the present invention is shown in FIG. Thus, the reinforcing bar may be arranged in only one step. In that case, only one type of spacer needs to be used.

Further, the present invention can be applied to a floor other than the uneven deck plate 5, for example, a floor in which various flat deck plates are embedded as shown in FIGS. 6 (a) to (c).

Further, the electromagnetic shielding member 6 is formed into a shape as shown in FIG. 3 by the large and small spacers 6a and 6c, the mesh members 6e and 6f and the pair of reinforcing bars 6b and 6d. Any shape may be used as long as it electromagnetically shields between the electromagnetic shielding member 2 and the deck plate 5 and can be easily poured into concrete.

[Effects of the Invention] As is clear from the above description, according to the electromagnetic shielding floor of the present invention, the floor portion between the deck plate of the floor and the electromagnetic shielding member arranged on the wall has the electromagnetic shielding structure. Therefore, it becomes possible to reliably shield electromagnetic waves even between rooms on the same floor.

[Brief description of drawings]

1 is a partial sectional view showing an embodiment of an electromagnetic shielding floor according to the present invention, FIG. 2 is a partially enlarged sectional view in FIG. 1, and FIG.
FIG. 4 is a perspective view partially showing an electromagnetic shielding member used in this embodiment, FIG. 4 is a view for explaining an arrangement method of the electromagnetic shielding member used in the present invention, and FIG. 5 is a modification of the present invention. FIG. 6 is a view showing another modification of the present invention, and FIG. 7 is a partial sectional view corresponding to FIG. 1 showing a conventional floor. 1 ... Wall, 2 ... Electromagnetic shield provided on wall 1, 3 ...
Floor, 4 ... Concrete slab, 5 ... Deck plate, 6 ... Electromagnetic shielding material provided on the floor, 6a ... Large spacer, 6c ... Small spacer, 6e, 6f ... Mesh member, 7 ...
… Upper rebar, 8 …… Lower rebar

Claims (2)

(57) [Claims] 1. An electromagnetic shielding floor in which a grounded deck plate is embedded, further comprising electromagnetic shielding members connected to the deck plate and an electromagnetic shielding member arranged on a wall, respectively. An electromagnetically shielded floor that is embedded inside. 2. The embedded electromagnetic shielding member is connected to a predetermined number of large and small spacers made of an electromagnetic shielding material, and fixed to the spacers, and connected to the deck plate and the electromagnetic shielding member provided on the wall, respectively. The electromagnetic shielding floor according to claim 1, wherein the electromagnetic shielding floor comprises a mesh member made of the electromagnetic shielding material.