JP3047032B2 - Electromagnetic wave shield structure at ceiling / wall connection - 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 wave shielding structure of a ceiling / wall joint for shielding an electromagnetic wave emitted from an electronic device or 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 electromagnetic wave shielding method, when the shield layer is provided on the ceiling portion, the upper surface of the ceiling is used as the shield layer. In addition, the suction port or the like becomes an opening, which significantly deteriorates the shielding performance.

[0006] Further, even if the sensor and emergency lighting are relatively small in size and small in number, it is necessary to shield the penetrating portion of the ceiling, and the hanging metal from the upper slab of the ceiling material itself is also a shield layer. From the beginning, it becomes a penetrating member, and the shield processing is also required, which becomes complicated.

[0007] As described above, the conventional installation work of the shield layer at the interior construction work stage is complicated, requires much time to process the opening, resulting in an increase in cost and a change in the interior pattern after the work. It was difficult to respond.

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 ceiling at the stage of finishing the interior of the building, and to provide a large area batch shield. It is an object of the present invention to provide an electromagnetic wave shielding structure of a ceiling / wall connecting portion which can be easily and inexpensively manufactured, is not affected by interior construction work at the time of tenant replacement, and can provide a stable shield space in the future.

[0009]

According to the present invention, in order to achieve the above object, a ceiling deck plate constituting a floor of an upper floor and a shielding material provided on a wall are electrically connected via a predetermined metal plate. In the electromagnetic wave shielding structure of the ceiling / wall connection part, the metal plate is connected along a long side direction toward which the unevenness is directed at a portion where the peaks or valleys of the ceiling deck plate are arranged alternately, and these ceiling decks are connected. Cover the connection between the plate and the metal plate with metal foil tape,
In the transverse direction of the ceiling deck plate, fill the concave material of the uneven space where the peaks or valleys are alternately arranged with the shielding material,
And a shield member provided on the wall are connected via a metal plate, Sea
The gist of the invention is to cover the connection between the metal material and the metal plate with a metal foil tape .

[0010]

According to the present invention, the ceiling deck plate constituting the floor of the upper floor and the shielding material provided on the wall are connected and electrically integrated, so that the entirety thereof becomes a shielding layer, Electromagnetic waves emitted from various electronic devices can be reliably shielded on the ceiling without leaking out.

Further, since the shielding member provided on the ceiling deck plate and wall connected via a metal plate, also welding the predetermined metal plate ceiling deck plate back surface of the uneven mountain or valley are alternately arranged, screws The shield material can be easily connected by attaching with a tape, a flat plate, or the like.

[0012] In particular, over the connection portion between the ceiling deck plate and the metal plate due to the covering with metal foil tape can be eliminated the gap.

[0013] In addition, in the transverse direction of the ceiling deck plate, the shielding material is provided in the wall by filling the recesses of the concave and convex voids in which the peaks or valleys of the deck plate are alternately arranged with gaps by filling the recesses. Are connected to each other, so that a sufficient connection area can be secured even if this shield material is orthogonal to the peak or valley of the deck plate.

[0014]

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 longitudinal sectional side view showing a first embodiment of an electromagnetic wave shielding structure of a ceiling / wall connecting portion of the present invention, and FIG. 2 is a longitudinal sectional front view of the same.

In the figure, reference numeral 1 denotes a ceiling deck plate constituting the floor of the upper floor, which is a well-known structure, which is formed by bending a metal plate to have a trapezoidal or triangular folded plate structure as shown in the drawing. 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. Also, slab reinforcement (not shown) is arranged on the ceiling deck plate 1 and concrete is cast to form a concrete floor 8.

The ceiling deck plates 1 are connected by spot welding or riveting at their long side ends, and a metal foil tape is stuck thereon.
Of the ceiling is covered with various shielding materials or the like on a steel beam 6 to be fixed by spot welding or riveting and electrically connected to each other or via the steel beam 6 to shield the electromagnetic wave of the ceiling part. A layer shall be formed.

In the figure, reference numeral 9 denotes a ceiling plate, which is attached with a ceiling insert such as a suspension bolt 10 on the ceiling deck plate 1 and suspends and supports a ceiling base (not shown) with the ceiling insert.

In the present invention, the L-shaped metal plate 3 is attached to the ceiling deck plate 1 by spot welding or riveting. In the present embodiment, the ceiling deck plate 1 has irregularities in which peaks or valleys are alternately arranged. The metal plate 3 is fixed along the long side direction where these irregularities are directed at the portions. In connection between the ceiling deck plate 1 and the metal plate 3, it is preferable to sufficiently remove rust and the like on the surfaces of both portions in order to secure electrical conductivity.

Furthermore, the upper connecting portion of the ceiling deck plate 1 and the metal plate 3, covered with metal foil tape, better to eliminate the gap.

On the other hand, the shielding material 2 for electromagnetic waves is previously attached to the wall 5 inside or on the entire surface thereof with screws or tapes. By joining the shielding material 2 with the metal plate 3, the ceiling is formed. It was connected to the deck plate 1.

The metal foil tape 4 is also adhered on the connection portion to cover the gap. Here, a metal foil tape, a metal plate, or the like is used as the shield material 2, and the material is iron,
Zinc, copper, aluminum, various types of plated steel plates and the like are preferably used.

By doing so, the ceiling deck plate 1 constituting the upper floor and the shield material 2 provided on the wall are connected via the metal plate 3 and are electrically integrated to form a shield layer as a whole. .

FIG. 3 shows a connection state between the short side direction of the ceiling deck plate 1 and the shield member 2 provided on the wall.

In this case, the shielding material 2 is orthogonal to the irregularities in which the peaks or valleys of the ceiling deck plate 1 are alternately arranged. After filling the paper with a filler material 7 made of metal sprayed, gaskets, metal cilia, etc. to eliminate the gap, one end of the L-shaped metal plate 3 is fixed by welding or screwing. I just need. In addition,
As shown in the drawing, the connection between the shield member 2 and the metal plate 3 is covered with a metal foil tape 4.

As a result, even if the shield member 2 is perpendicular to the peaks or valleys of the deck plate, a sufficient connection area between the metal plate 3 and the ceiling deck plate 1 can be secured.

Also, hanging bolts are attached to the ceiling deck plate 1.
When a ceiling insert such as 10 is attached, an insulating material such as plastic is used for a washer, a nut portion, and the like, and a shield process is required at the penetrating portion.
In this case, all the inserts are made of metal, or the insert is sealed with a metal foil tape or a conductive caulking material.

Further, a metal pipe is similarly used to seal a portion where an electric conduit or the like penetrates through the deck plate 1 with a metal foil tape or a conductive caulking material.

In this case, the ceiling deck plate 1
Although the metal plate 3 is attached to the base plate and the shielding member 2 is connected via the metal plate 3, it is also conceivable to connect them directly as another embodiment.

[0029]

As described above, the electromagnetic wave shield structure of the ceiling / wall connection portion of the present invention is easy to construct, and it is not necessary to newly install a shield layer on the ceiling at the stage of finishing the interior of the building. In addition, it is possible to easily and inexpensively shield a large area at once.

Further, a stable shield space can be obtained in the future without being affected by the interior work at the time of tenant replacement.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a main part of an embodiment of an electromagnetic wave shielding structure of a ceiling / wall connecting portion of the present invention.

FIG. 2 is a longitudinal sectional front view showing a main part of one embodiment of the electromagnetic wave shielding structure of the ceiling / wall connecting portion of the present invention.

FIG. 3 is a vertical sectional side view showing a main part of one embodiment of the electromagnetic wave shielding structure of the ceiling / wall connecting portion of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ceiling deck plate 2 ... Shield material 3 ... Metal plate 4 ... Metal foil tape 5 ... Wall 6 ... Steel beam 7 ... Filling shield material 8 ... Concrete floor 9 ... Ceiling plate 10 ... Hanging bolt

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-290846 (JP, A) JP-A-6-26298 (JP, U) JP-A-5-42433 (JP, U) (58) Field (Int. Cl. ⁷ , DB name) E04B 1/92 H05K 9/00

Claims (1)

(57) [Claims] 1. An electromagnetic wave shielding structure of a ceiling / wall connecting portion for electrically connecting a ceiling deck plate constituting a floor of an upper floor with a shielding material provided on a wall via a predetermined metal plate. Are connected along the long side of the ceiling deck plate, where the peaks or valleys are alternately arranged, and the metal foil tape is applied over the connection between the ceiling deck plate and the metal plate. In addition, the transverse direction of the ceiling deck plate is filled with a shielding material in the concave portion of the uneven gap in which the peaks or valleys are alternately arranged, and the shielding material provided on the wall is connected via a metal plate ,
An electromagnetic wave shielding structure for a ceiling / wall connecting portion, wherein a connecting portion between the shielding material and the metal plate is covered with a metal foil tape .