JP3028042B2 - Floor electromagnetic wave shielding structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor electromagnetic wave shielding structure for shielding electromagnetic waves emitted from electronic equipment and the like at a building frame level.

[0002]

2. Description of the Related Art In recent years, cordless use of extension telephones in buildings has been planned mainly in buildings (hospitals, hotels, etc.) having a high work ratio of mobility. In addition to the use of cordless extension telephones, various types of OA terminals have been made wireless and millimeter-wave communication has been introduced.

[0003] However, in the introduction of these, it is generated from circuits of electronic equipment such as computers, medical equipment, cooking equipment, lighting equipment and the like used in the building to prevent interference caused by similar extension handsets in adjacent buildings. It is necessary to apply a certain level of electromagnetic wave shielding to buildings and entire rooms to prevent communication disturbances caused by electromagnetic waves.

[0004] Conventional electromagnetic wave shielding methods have dealt with the problem by applying a conductive material to the surfaces of ceilings, walls and floors of rooms and buildings, and providing a shielding layer of metal foil or metal plate. In particular, from the viewpoint of cost, the provision of the shield layer is performed by bonding a metal plate or metal foil of zinc, copper, aluminum, iron, or the like with a glue to the surface of each part of the room with an adhesive, or screwing it to the surface of the floor or wall. It is used as a part of interior finishing work at the stage of finishing on the building frame such as floors and walls.

[0005]

However, in the conventional installation of the shield layer on the floor surface, a predetermined shield penetration treatment is required at a portion where electric pipes and the like come out of the slab onto the floor (various outlets and the like). In addition, since the shield material is exposed on the surface of the floor, it is necessary to select an adhesive and prevent the concentrated load from being adjusted with the floor finish material to be applied thereon.

[0006] Such a conventional installation work of the shield layer at the interior construction stage is complicated, requires much time for processing the opening, resulting in an increase in cost and a change in the interior pattern after the installation. In some cases, there are problems such as restrictions.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art, to simplify the construction, to eliminate the necessity of installing a new shield layer on the floor at the stage of finishing the interior of the building, and to provide a large-area batch shield. An object of the present invention is to provide a floor electromagnetic wave shielding structure that can be easily and inexpensively manufactured.

[0008]

According to the present invention, in order to achieve the above object, the deck plate and the long sides of the deck plate of the floor structure made of concrete are connected to each other by spot welding or riveting. A metal foil tape is applied over the entire length of the deck plate so as to seal the gap between the connection of the deck plates, and a curing tape is applied on the metal foil tape so as to cover the metal foil tape. The gist of the short side is that it is covered with various shielding materials or the like on a steel beam to which it is fixed by spot welding or riveting and is electrically connected to each other.

[0009]

According to the present invention, the long side ends of the deck plate are fixed to each other by spot welding or riveting, and are covered with a metal foil tape of a shielding material without any gap, and are electrically integrated with each other. The short side end of the slab is also covered with various shielding materials on the steel beam and electrically connected to each other, so that the entire deck plate of the slab can be directly assumed to be the shielding layer, so that the outlets are in the shielding area And no treatment of the penetrating portion is required at all.

Further, even if a lightweight steel frame or the like is screwed from above the floor at the time of partitioning work due to a change in tenant or the like in the future, the deck plate serving as the shield layer will not be damaged, and the shield performance will be maintained for a long time.

If the beam width of the steel beam is large and the short ends of the deck plate cannot be directly connected to each other, the short edge of the deck plate is placed on the steel beam at the flange surface on the steel beam. If the connection point is covered with a metal foil tape or various shield materials, and is electrically and integrally connected to each other via the steel beam, the entire deck plate of the slab can be directly assumed to be a shield layer.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of a floor electromagnetic wave shielding structure according to the present invention, and FIG. 2 is an enlarged vertical sectional front view of a main part of the same, where 1 is a deck plate.

The present invention is applied to a floor structure composed of a deck plate 1 and concrete. As is well known, the deck plate 1 has a folded plate structure having a triangular cross section by bending a metal plate. A further strength is added by the folded plate structure, and a zinc steel plate obtained by galvanizing iron is widely used as a material.

In order to obtain a large area, the deck plate 1 overlaps and connects the long side ends 1a. When the cross section of the folded plate structure is triangular as shown in FIG. The end of the deck plate 1 is bent downward at a right angle, and the bent portion is inserted into the gap between the triangular tops near the long side end 1a of the counterpart deck plate 1, and the inserted top is The entire long side is fixed by spot welding 2 at a constant interval. The fixation by the spot welding 2 can prevent the deck plates 1 from being displaced from each other or runaway.

Next, after the spot welding 2 is performed as described above, the metal foil tape 3 is attached over the entire length of the deck plate 1 in the longitudinal direction to seal the gap between the two deck plates 1. As the metal foil tape 3, a zinc foil tape,
Aluminum foil tape, copper foil tape, etc. are used.

Further, a curing tape 4 such as a gum tape is adhered on the metal foil tape 3 to cover the metal foil tape 3 as a curing for the laying of the reinforcing bar at the time of placing the concrete, the bundling, etc.

On the other hand, the short side end 1b of the deck plate 1 is placed on the upper flange 6a of the steel beam 6 and spot-welded. If the beam width of this steel beam 6 is narrow, the deck plate 1
The short side ends 1b are also close to each other, but these short side ends 1b are covered with a metal plate such as a galvanized iron plate or various shield materials 8 such as a metal mesh and electrically connected to each other.

When the short side end 1b of the deck plate 1 is connected to the upper flange 6a of the steel beam 6, the rust or the like on the surface of the steel frame is appropriately removed in order to secure electrical conductivity. And Further, instead of the above-mentioned various shield materials 8, it may be covered with a metal foil tape or the like. In addition, it may be covered with a curing tape.

FIG. 3 shows a second embodiment of the present invention.
This is the case where the beam width of the steel beam 6 is large and the short side ends 1b of the deck plate 1 cannot be directly connected to each other.

In this case, the short side end 1 of the deck plate placed on the upper flange 6a of the steel beam 6 and spot-welded.
b, the connection point to the surface of the upper flange 6a is covered with a metal foil tape 3, various shield materials 8, and the like, and are electrically and integrally connected to each other via the metal material of the steel beam 6.

When the stud bolt 7 is cast on the metal foil tape 3 of the steel beam 6 or the various shielding members 8, a gap (damage at the time of welding) is generated around the stud bolt 7, so that the metal Repair the penetrated part with foil tape or the like.

FIGS. 4 and 6 show a third embodiment of the present invention, in which the folded plate structure of the deck plate 1 has a trapezoidal cross section. In this case, as shown in FIG. 5, the longitudinal ends 1a of the deck plates 1 adjacent to each other at the trapezoidal bottom are overlapped and joined by riveting with rivets 5 at regular intervals. A tape 3 is attached to seal a gap between both deck plates 1.

On the other hand, the connection between the short side end 1b of the deck plate 1 attached to the steel beam 6 and the steel beam 6 is joined by spot welding or the like. Is further covered with the curing tape 4 according to the above.

[0024]

As described above, in the floor electromagnetic wave shielding structure according to the present invention, a shield layer is formed on the deck plate and the steel beam of the skeleton. There is no need to install a shield, the construction is simple, and a large-area batch shielding can be easily and inexpensively.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a floor electromagnetic wave shielding structure according to the present invention.

FIG. 2 is an enlarged longitudinal sectional front view of a main part showing a first embodiment of the floor electromagnetic wave shielding structure of the present invention.

FIG. 3 is a perspective view showing a second embodiment of the floor electromagnetic wave shielding structure of the present invention.

FIG. 4 is a perspective view showing a third embodiment of the electromagnetic wave shielding structure for floors according to the present invention.

FIG. 5 is an enlarged vertical sectional front view of a main part in a second and third embodiments of the floor electromagnetic wave shielding structure of the present invention.

FIG. 6 is an exploded perspective view of a main part of a floor electromagnetic wave shielding structure according to a second or third embodiment of the present invention.

[Explanation of symbols]

Reference Signs List 1 deck plate 1a long end 1b short end 2 spot welding 3 metal foil tape 4 curing tape 5 rivet 6 steel beam 6a flange 7 stud bolt 8 shielding material 9 Shield welding

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 5-42433 (JP, U) JP-A 63-128797 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 5/43 E04B 5/40 E04B 1/92

Claims (1)

(57) [Claims] 1. A deck plate and a long side end of a deck plate of a floor structure made of concrete are connected to each other by spot welding or riveting, and metal is placed on the deck plate so as to seal a gap between the two deck plates. Attach the foil tape over the entire length in the longitudinal direction, paste the curing tape on this metal foil tape so as to cover it, and short-end the deck plate by spot welding or riveting. An electromagnetic shielding structure on the floor characterized by being covered with various shielding materials on the steel beam to be fixed and electrically connected to each other.