JPH04108716U - radio wave absorption wall - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a radio wave absorbing wall that can be applied to a wide range of wall thicknesses for external walls of buildings, etc., and has improved workability during production. [Structure] A ferrite plate is fixed to the back of the exterior tile,
In a radio wave absorbing wall formed integrally with concrete and reinforced mesh, a through hole is formed in the ferrite plate (or exterior tile and ferrite plate), a fastener is passed through the through hole, and concrete is poured. A radio wave absorbing wall.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a radio wave absorption wall that prevents unnecessary reflected radio waves such as VHF and UHF bands. In particular, it can be applied to a wide range of wall thicknesses on the exterior walls of buildings, etc., and has improved workability during construction. It is related to storage walls.

0002

[Conventional technology]

Recently, unnecessary reflected radio waves from high-rise buildings have become an obstacle to television broadcasting, causing TV screens to Radio wave pollution, such as the generation of ghosts, has become a problem. As a countermeasure, high Various radio wave absorbing walls have been proposed in which ferrite plates are embedded in the outer walls of layered buildings.

0003 In Japanese Patent Publication No. 1-45238, a plurality of leg pieces are provided protruding from the back side of the decorative board, and adjacent leg pieces are A layer of concrete is placed on the back of the decorative block with a ferrite molded body fitted in between. Discloses a radio wave absorbing wall that is worn on the body. Figure 6 shows an example of this radio wave absorption wall. FIG. This radio wave absorbing wall is a decorative block 61 having two legs 63. Arrange the ferrite plate 62 so that the tips of its legs 63 are in contact with the reinforcing mesh 64. Then concrete 65 was poured.

0004 In addition, Japanese Patent Publication No. 1-45239 discloses that an L-shaped surface material consisting of a horizontal piece and a vertical piece is used as a wall plate. inside the concrete so that the horizontal piece is flush with the outer surface of the wall slab concrete. When the ferrite-based molded body is supported on each of the horizontal pieces, Also, the horizontal piece is connected to the reinforcing mesh supported on each of the vertical pieces through anchoring members. This disclosure discloses a radio wave absorbing wall that is connected to a radio wave absorbing wall. Figure 7 shows an example of this radio wave absorption wall. FIG. This radio wave absorbing wall has a surface material 66 having legs 68 on one side. A light plate 67 is arranged, the tips of its legs 68 are placed in contact with the reinforcing mesh 70, On the other hand, thin string strips 69 are connected to reinforcing mesh 70 and concrete 71 is poured. It is.

[0005]

[Problem that the idea aims to solve]

Conventional radio wave absorbing walls like this require an anchor to anchor the concrete layer. It was necessary to make the legs to some extent long for use in cars. Therefore, the weight of the exterior material There is a problem that the radio wave absorption wall becomes large and the radio wave absorption wall becomes thick. Also, Figure 7 When fixing thin string strips to reinforcing mesh as shown in Depending on the number of locks, thin string strips must be connected to the reinforcing bar mesh, which takes an excessive amount of man-hours. There is a problem with too much.

[0006] In view of the above circumstances, the present invention eliminates the need for long anchor legs and It has a structure that does not require connecting pieces to reinforcing mesh, reducing the complexity of the manufacturing process. The purpose is to provide a radio wave absorbing wall.

[0007]

[Means to solve the problem]

As a result of intensive research in view of the above objectives, the inventors of the present invention have determined that ferrite is applied to the back side of exterior tiles. The radio wave absorbing device is made by fixing the top plate and integrally molding it with concrete together with the reinforced mesh. In the housing wall, make a through hole in the ferrite plate (or exterior tile and ferrite plate). When a fastener is passed through the through-hole from the outside and concrete is poured, the outside The covered tiles and ferrite board are firmly fixed to the concrete via the fasteners. The manufacturing process is simple because there is no need to connect it to the reinforcing steel mesh with thin string strips, etc. We discovered that this is the case and came up with the present invention.

[0008] In other words, the first radio wave absorption wall of this invention is a ferrite plate on the back side of the exterior tile. It is fixed and integrally molded with concrete with reinforced mesh, and is A through hole is formed in the ferrite plate, and a fastener is inserted into the through hole from the exterior tile side. The exterior tile is inserted and the fastener is fixed to the concrete. It is characterized by being fixed.

[0009] The second radio wave absorption wall of this invention is made by fixing a ferrite plate to the back of the exterior tile. It is integrally molded with concrete and reinforced mesh, and is similar to the exterior tile mentioned above. A hole passing through the exterior tile and the ferrite plate is provided in the joint part of A fastener is inserted into the through hole from the exterior tile side, and the fastener is inserted into the concrete. The exterior tile is fixed by being fixed to the .

0010

【Example】

The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a sectional view showing a radio wave absorption wall according to an embodiment of the present invention. The electricity of this example The wave absorbing wall consists of an exterior tile 1 with a ferrite plate 3 fixed to the flat back surface, and a ferrite plate 1. The fastener 9 inserted into the through hole 4 provided in the light plate 3 and the joint part of the exterior tile 1 At 6, a through hole is formed to penetrate both the exterior tile 1 and the ferrite plate 3. It has a fastener 5 inserted into the through hole 2, and these are driven so as to be fixed integrally. It is fixed with concrete (not shown). in this concrete layer is provided with reinforcing mesh (not shown). Note that in this example, A plurality of grooves 81 are formed on the surface of the tile 1 to which the ferrite plate 3 is fixed. This groove 81 makes it easier to temporarily fix the ferrite plate 3 with adhesive. The stress caused by the difference in thermal expansion coefficient between the exterior tile and the ferrite plate is alleviated. Ru.

[0011] Both of the through holes 2 and 4 have an enlarged diameter portion on the outside. An example is shown in FIG. this The head 51 of the fastener 5 is adapted to engage with the stepped portion 22 of the enlarged diameter portion 21 of the through hole 2. Tome A plurality of (two in this embodiment) legs 52 extend from the head 51 of the tool 5. Fastener 5 The head 51 and legs 52 are integrally formed of metal, and the legs 52, 52 are formed outwardly. It has the flexibility to expand into The same applies to the fastener 9.

0012 In addition, each of the through holes 2 and 4 can be provided in plural numbers per one exterior tile. Ru. In addition, in the case of the through hole 4 of the ferrite plate 3, the state in which the fastener 9 is inserted into the through hole 4 Then, the ferrite plate 3 is fixed to the exterior tile 1.

[0013] FIG. 2 shows a radio wave absorbing wall according to another embodiment of the present invention. In this example, one Three ferrite plates 12a, 12b, and 12c are fixed to the back side of the exterior tile 11. . The ferrite plates 12a and 12c on both sides are provided with through holes 4a and 4c, and the center plate is provided with through holes 4a and 4c. A through hole 2 through which the exterior tile 11 passes is provided in the elite plate 12b. This piercing The through hole 2 has an enlarged diameter portion opening at the joint portion 6 of the exterior tile 11. Ferrite plate 12a , 12c, the fasteners 13a, 13c are inserted into the through holes 4a, 4c, and the central through hole 2 has a fastener 13b inserted therein. After inserting the fastener 13b, a joint 14 is formed in the joint part 6. It has been subjected.

[0014] Grooves 15 for glazing are formed on both sides of this exterior tile 11, and each groove 15 is Kasugai 16 has been inserted. This gazing 16 is rod-shaped with an almost L-shaped cross section. It is a body or a plate-like body, and by adhering to concrete after concrete is poured. , has the function of fixing the exterior tile 11.

[0015] FIG. 3 shows a radio wave absorbing wall according to yet another embodiment of the present invention. In this example In this case, one ferrite plate 32 is fixed to one exterior tile 31, and the ferrite plate 32 is fixed to one exterior tile 31. One through hole 36 is formed in the top plate 32. The fastener 33 is inserted into the through hole 36. There is. Also, similar to the embodiment shown in FIG. 2, grooves 35 are formed on both side surfaces of the exterior tile 31. A skimmer 34 is inserted into each groove 35.

[0016] FIG. 4 shows a radio wave absorbing wall according to yet another embodiment of the present invention. In this example , one ferrite plate 42 is fixed to one exterior tile 41. pass through both The hole 45 opens into the joint portion 46, and the fastener 43 is inserted into the through hole 45. After the fastener 43 is inserted, a joint 44 is provided at the opening of the through hole 45. Also exterior tile 41 , 41, a similar joint 44 is provided.

[0017] In addition, in this invention, the inner diameter of the through hole is, for example, 100 mm × 100 mm × 9 mm. In the case of exterior tile 1 (120mm x 120mm) to which light plate 3 is fixed, approximately 6 to 8 mm is sufficient. The length of the legs of the bear clasp may be about 40 to 60 mm.

[0018] Although the present invention has been explained above with reference to the attached drawings, the present invention is limited to this. Various changes can be made without departing from the spirit of the invention.

[0019]

[Effect of the idea]

According to the present invention, long anchor legs are not required and exterior tiles can be fixed. The fasteners can be easily installed, increasing flexibility in wall thickness and improving work efficiency. go up In addition, if the number and size of fasteners are set appropriately, exterior tiles of various sizes can be created. It can also be adapted to

[0020] Furthermore, in the radio wave absorbing wall of this invention, large tiles are used as exterior tiles. , if multiple ferrite plates are installed on one exterior tile, the number of exterior tiles used can be The number of sheets can be reduced, thereby simplifying construction.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a radio wave absorption wall according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a radio wave absorption wall according to another embodiment of the present invention.

FIG. 3 is a sectional view showing a radio wave absorption wall according to yet another embodiment of the present invention.

FIG. 4 is a sectional view showing a radio wave absorption wall according to yet another embodiment of the present invention.

FIG. 5 is a sectional view showing a through hole of an exterior tile used in the radio wave absorbing wall of the present invention.

FIG. 6 is a sectional view showing an example of a conventional radio wave absorption wall.

FIG. 7 is a sectional view showing another example of a conventional radio wave absorption wall.

[Explanation of symbols]

1, 11, 31, 41 Exterior tiles 2, 4, 45 through hole 3, 12a, 12b, 12c, 32, 42 ferrite plate 5, 9, 13a, 13b, 13c, 33, 43 Fasteners 6, 46 Joint area 14, 44 joints 15, 35 groove 16, 34 Kasugai

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Tadao Naito Kashimaken, 4-51 Nakagome Otacho, Yokohama, Kanagawa Prefecture Setsu Co., Ltd. Yokohama Branch (72) Creator Tatsuo Naito Kashimaken, 1-2-7 Motoakasaka, Minato-ku, Tokyo Inside the company

Claims (3)

[Scope of utility model registration request] Claim 1: In a radio wave absorbing wall formed by fixing a ferrite plate to the back surface of an exterior tile and integrally molding it with a reinforced mesh from concrete, a through hole is formed in the ferrite plate, and the exterior tile is attached to the through hole. A radio wave absorbing wall characterized in that the exterior tile is fixed by inserting a fastener from the side and fixing the fastener to concrete. 2. A radio wave absorbing wall in which a ferrite plate is fixed to the back surface of an exterior tile and integrally formed with concrete together with a reinforcing mesh, in which a joint portion of the exterior tile is provided with a ferrite plate that penetrates the exterior tile and the ferrite plate. A radio wave absorbing wall characterized in that the exterior tile is fixed by having a hole provided therein, a fastener being inserted into the through hole from the exterior tile side, and the fastener being fixed to concrete. . 3. The radio wave absorbing wall according to claim 1 or 2, wherein a groove is formed in a side surface of the exterior tile,
A radio wave absorbing wall characterized in that a grating is inserted into the groove.