JPH0199291A - Radio wave absorber having anchor - Google Patents
Radio wave absorber having anchorInfo
- Publication number
- JPH0199291A JPH0199291A JP25815187A JP25815187A JPH0199291A JP H0199291 A JPH0199291 A JP H0199291A JP 25815187 A JP25815187 A JP 25815187A JP 25815187 A JP25815187 A JP 25815187A JP H0199291 A JPH0199291 A JP H0199291A
- Authority
- JP
- Japan
- Prior art keywords
- radio wave
- wave absorber
- anchor
- main body
- ferrite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 10
- 239000004570 mortar (masonry) Substances 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 229910018605 Ni—Zn Inorganic materials 0.000 abstract description 2
- 239000011358 absorbing material Substances 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は電波吸収体に係り、特に躯体壁面への取付強度
が極めて高い電波吸収体に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a radio wave absorber, and more particularly to a radio wave absorber that has extremely high attachment strength to the wall surface of a building structure.
［従来の技術］
土地の有効利用、建物の機能向上に伴い、都心部はもと
より地方都市においても建物が高層化し、高層建物によ
るテレビ（ＶＨＦ）電波ゴースト等の電波受信障害が大
きな社会問題として取り上げられている。[Conventional technology] With the effective use of land and improvements in the functionality of buildings, buildings are becoming taller not only in urban centers but also in regional cities, and radio wave reception interference such as television (VHF) radio wave ghosts caused by high-rise buildings has become a major social issue. It is being
電波受信障害の原因の１つとして建物の壁面における電
波の反射が挙げられることから、従来より壁面における
電波反射の問題を改善するために電波吸収体を利用した
壁面材料の研究がなされている。Since one of the causes of radio wave reception interference is the reflection of radio waves on the walls of buildings, research has been conducted on wall materials that use radio wave absorbers to improve the problem of radio wave reflection on walls.
電波吸収体は、入射した電波を吸収し減衰させる物体、
あるいは入射した電波を殆ど反射させない物体をいい、
電磁エネルギーに対して損失を与える物質からできてい
る。電波吸収体にはカーボン、導電性ｉａ維、フェライ
トなどがあるが、これらのうち、テレビ電波周波数帯域
に最も効果のある材料はフェライトである。A radio wave absorber is an object that absorbs and attenuates incident radio waves.
Alternatively, it refers to an object that hardly reflects incident radio waves.
It is made of a material that provides loss to electromagnetic energy. Radio wave absorbers include carbon, conductive IA fibers, ferrite, etc. Among these, ferrite is the most effective material in the television radio wave frequency band.
フェライトは酸化鉄に酸化ニッケル、酸化亜鉛などの金
属酸化物を混ぜて１２００℃前後で焼成したものとして
提供されており、粒子径６０μｍ以上のフェライト粒子
を含むフェライト板は、８０〜３５０ＭＨｚの周波数帯
で９９％以上の電波吸収特性を有する。Ferrite is produced by mixing iron oxide with metal oxides such as nickel oxide and zinc oxide and firing it at around 1200℃. Ferrite plates containing ferrite particles with a particle size of 60 μm or more can be used in the frequency band of 80 to 350 MHz. It has radio wave absorption characteristics of 99% or more.
このようなフェライト焼結体よりなる電波吸収体は一般
に厚さ数ｍｍの平板状である。この平板状の電波吸収体
を建造物の壁面に装着してテレビゴースト等の電波障害
対策として用いる場合、現在の様に建造物が高層化して
くると、それだけ電波吸収体も高位置に装着することに
なり、壁面との接合の安定性、信頼性が強く要求される
ようになる。A radio wave absorber made of such a sintered ferrite body is generally a flat plate with a thickness of several mm. When attaching this flat radio wave absorber to the wall of a building and using it as a countermeasure against radio wave interference such as TV ghosts, as buildings become taller as they are now, the radio wave absorber must be installed at a higher position. Therefore, there is a strong demand for stability and reliability of the connection with the wall surface.
〔発明が解決しようとする問題点コ
従来、電波吸収体はモルタルにて躯体に張り付けること
が多いが、フェライト焼結体は熱膨張係数が大きく、し
かも、モルタルとの接合力が弱い。そのため、平板状の
電波吸収体を壁に装着した場合には、経時変化により壁
から剥離・離脱する危険があり、少なくとも高層建造物
に装着するには適さない。[Problems to be Solved by the Invention] Conventionally, radio wave absorbers are often attached to building blocks using mortar, but ferrite sintered bodies have a large coefficient of thermal expansion and have a weak bonding force with the mortar. Therefore, when a flat radio wave absorber is attached to a wall, there is a risk that it will peel off or separate from the wall due to changes over time, making it unsuitable at least for attachment to high-rise buildings.
［問題点を解□決するための手段］
本発明の電波吸収体は、電波吸収体の本体の裏面に金属
線よりなるアンカーが取り付けられているものである。[Means for Solving the Problems] The radio wave absorber of the present invention has an anchor made of a metal wire attached to the back surface of the main body of the radio wave absorber.
［作 用］
本発明の電波吸収体は、その本体裏面に金属線よりなる
アンカーを有するため、張り付はモルタルとの接合力が
極めて高いものとなり、壁面からの剥離、離脱が防止さ
れる。[Function] Since the radio wave absorber of the present invention has an anchor made of a metal wire on the back surface of its main body, the bonding force with the mortar is extremely high, and peeling and detachment from the wall surface is prevented.
［実施例］
以下、図面に示す実施例を参照しながら、本発明につい
てざらに詳細に説明する。[Examples] Hereinafter, the present invention will be roughly described in detail with reference to embodiments shown in the drawings.
第１図は本発明の実施例に係るアンカーを有する電波吸
収体の斜視図、第２図及び第３図は第１図のＩＩ −Ｉ
Ｉ線及びＩＩＩ −ＩＩＩ線に沿う断面図である。FIG. 1 is a perspective view of a radio wave absorber having an anchor according to an embodiment of the present invention, and FIGS. 2 and 3 are II-I of FIG.
FIG. 3 is a cross-sectional view taken along line I and line III-III.
第１図に示す如く、本実施例の電波吸収体１は電波吸収
体の本体２、即ち、Ｎｉ−Ｚｎフェライト等のフェライ
ト焼結板等の電波吸収材の裏面に、金属線よりなるアン
カー３を有するものである。As shown in FIG. 1, the radio wave absorber 1 of this embodiment has an anchor 3 made of a metal wire on the back side of the main body 2 of the radio wave absorber, that is, a radio wave absorbing material such as a ferrite sintered plate such as Ni-Zn ferrite. It has the following.
この電波吸収体本体２は、その裏面に凹条４が形成され
ている。前記アンカー３は、この凹条４内に配設された
ベース部３ａ、該ベース部３ａから立ち上る柱部３ｂ、
該柱部３ｂの上端に連設されたビーム部３ｃ、３ｄを有
しており、ベース部３ａは凹条４内においてエポキシ系
等の接着力が高く耐久性に優れた接着剤（図示路）によ
り電波吸収体本体２に接着されている。ビーム部３Ｃは
ベース部３ａと平行方向に延在し、ビーム部３ｄはベー
ス部３ａと直交方向に延在している。This radio wave absorber main body 2 has grooves 4 formed on its back surface. The anchor 3 includes a base portion 3a disposed within the groove 4, a column portion 3b rising from the base portion 3a,
It has beam parts 3c and 3d connected to the upper end of the pillar part 3b, and the base part 3a is coated with a highly adhesive and durable adhesive such as epoxy in the groove 4 (as shown in the figure). It is bonded to the radio wave absorber main body 2 by. The beam portion 3C extends in a direction parallel to the base portion 3a, and the beam portion 3d extends in a direction orthogonal to the base portion 3a.
かかる電波吸収体においては、アンカー３を貼り付はモ
ルタル中に埋め込むようにして施工することにより、躯
体に対し極めて強固に張り付は施工することができる。In such a radio wave absorber, by attaching the anchor 3 so as to embed it in mortar, it is possible to attach it extremely firmly to the building frame.
第４図及び第５図はそれぞれ本発明の別の実施例に係る
電波吸収体の要部断面図である。FIGS. 4 and 5 are sectional views of essential parts of radio wave absorbers according to other embodiments of the present invention, respectively.
第４図の実施例においては、アンカー３のベース部３ａ
が省略されており、代わりに柱部３ｂにはプレート片３
ｅが固着されており、該プレート片３ｅがエポキシ系等
の接着剤により電波吸収体本体２に固着されている。In the embodiment of FIG. 4, the base portion 3a of the anchor 3
is omitted, and instead, a plate piece 3 is attached to the column 3b.
e is fixed, and the plate piece 3e is fixed to the radio wave absorber main body 2 with an epoxy adhesive or the like.
第５図の実施例では、凹条４はアリ溝となっており、該
凹条４の側面壁４ａに係止された金具５が電波吸収体本
体２の裏面に固着されている。この金具５は、アーチ形
状のバネ弾性を有するものであり、端部５ａがアリ溝形
の凹条４の側面壁４ａと係合している。また、この端部
５ａと側面壁４ａとの間には、エポキシ系等の接着剤６
が介在され、金具５と電波吸収体本体２との接合力を高
めると共に、電波吸収体本体２と金具５との熱膨張差を
吸収する膨張代を形成している。この金具５は凹部４の
長手方向に延在するものであっても良く、第４図のプレ
ート片３ｅの如く短いものであっても良い。In the embodiment shown in FIG. 5, the grooved strip 4 is a dovetail groove, and a metal fitting 5 that is engaged with the side wall 4a of the grooved strip 4 is fixed to the back surface of the radio wave absorber main body 2. This metal fitting 5 has an arch-shaped spring elasticity, and an end portion 5a engages with a side wall 4a of the dovetail groove-shaped groove 4. Moreover, an adhesive 6 such as epoxy is applied between the end portion 5a and the side wall 4a.
is interposed to increase the bonding force between the metal fitting 5 and the radio wave absorber main body 2, and to form an expansion allowance for absorbing the difference in thermal expansion between the radio wave absorber main body 2 and the metal fitting 5. The metal fitting 5 may extend in the longitudinal direction of the recess 4, or may be short like the plate piece 3e in FIG. 4.
第４．５図の実力五個のその他の構成は第１〜３図の実
施例と同様である。The other configurations of the five power units shown in FIG. 4.5 are the same as the embodiments shown in FIGS. 1 to 3.
第６図は本発明のさらに別の実施例に係る電波吸収体の
斜視図、第７図は同要部の断面図である。この実施例に
係る電波吸収体１においては、電波吸収体本体２の側端
面の凹部７が切り込まれると共に、この凹部７内におい
て電波吸収体本体２の端面と直交する方向に差込穴８が
穿設され、アンカー７９の先端が該差込穴８中に差し込
まれることによりアンカー９が電波吸収体本体２に固定
されている。なお、穴８中や凹部７内には接着剤（図示
路）が充填され、アンカー９と電波吸収体本体２との連
結にガタつきがないようにしている。FIG. 6 is a perspective view of a radio wave absorber according to still another embodiment of the present invention, and FIG. 7 is a sectional view of the essential parts thereof. In the radio wave absorber 1 according to this embodiment, a recess 7 is cut in the side end face of the radio wave absorber main body 2, and an insertion hole 8 is formed in the recess 7 in a direction perpendicular to the end face of the radio wave absorber main body 2. is drilled, and the tip of the anchor 79 is inserted into the insertion hole 8, whereby the anchor 9 is fixed to the radio wave absorber main body 2. Note that the holes 8 and the recesses 7 are filled with an adhesive (as shown) to prevent looseness in the connection between the anchor 9 and the radio wave absorber main body 2.
このアンカー９は略々コ字形であり、その画先端が更に
内方へ折曲されて前記差込穴９への挿入部９ａとなって
いる。This anchor 9 has a substantially U-shape, and the leading edge thereof is further bent inward to form an insertion portion 9a into the insertion hole 9.
本実施例において凹部７を設けたのは、該凹部７内にア
ンカー９の端部な納め入れることにより、隣接する電波
吸収体同志をぴったりと並列し得るようにするためであ
る。The reason why the recess 7 is provided in this embodiment is to allow the end portions of the anchors 9 to be housed in the recess 7 so that adjacent radio wave absorbers can be arranged exactly in parallel.
第８図は本発明の他の実施例を示す斜視図、第９図は第
８図のＩＸ−ＩＸ線に沿う断面図である。この実施例で
はアンカー１０は格子部１０ａと脚部１０ｂとを有して
おり、格子部１０ａはその格子面が電波吸収体本体２の
裏面とほぼ平行に配置されている。脚部１０ｂは溶接等
により格子部１０ａと一体とされており、凹条４内に配
置されている。この凹条４内にはエポキシ樹脂等の強度
及び耐久性を有する樹脂１１が注入されて硬化されてお
り、これによってアンカー１０を電波吸収体本体２に固
着させるようにしている。なお、構成を明瞭とするため
に、第８図では樹脂１１を透視した状態にて図示しであ
る。FIG. 8 is a perspective view showing another embodiment of the present invention, and FIG. 9 is a sectional view taken along line IX--IX in FIG. 8. In this embodiment, the anchor 10 has a lattice portion 10a and leg portions 10b, and the lattice surface of the lattice portion 10a is arranged substantially parallel to the back surface of the radio wave absorber main body 2. The leg portions 10b are integrated with the lattice portion 10a by welding or the like, and are arranged within the grooves 4. A resin 11 having strength and durability, such as epoxy resin, is injected into the groove 4 and hardened, thereby fixing the anchor 10 to the radio wave absorber main body 2. In order to make the configuration clear, FIG. 8 shows the resin 11 seen through.
なお、本発明は図示以外の態様をもとり得るものであり
、アンカーは電波吸収体本体にしっかりと固定される限
り、図示以外の方式によって電波吸収体本体に取り付け
ても良い。また、アンカーを構成する金属線の本数等を
図示以外としても良いことは明らかである。It should be noted that the present invention may have embodiments other than those shown in the drawings, and the anchor may be attached to the radio wave absorber main body by a method other than that shown in the drawings, as long as the anchor is firmly fixed to the radio wave absorber main body. Furthermore, it is clear that the number of metal wires constituting the anchor may be other than that shown in the drawings.
［効果］
以上の通り、本発明の電波吸収体は、その背面にアンカ
ーが設けられているから、これを躯体壁面に極めて堅固
に取り付けることができる。[Effects] As described above, since the radio wave absorber of the present invention is provided with an anchor on its back surface, it can be attached extremely firmly to the wall surface of a building frame.
第１図は本発明の一実施例に係る電波吸収体の斜視図、
第２図及び第３図は同断面図、第４図及び第５図は別の
実施例を示す断面図である。第６図はざらに別の実施例
を示す斜視図、第７図は同要部断面図である。第８図は
さらに他の実施例を示す斜視図、第９図は第８図のＩＸ
−ＩＸ線に沿う断面図である。
１・・・電波吸収体、２・・・電波吸収体本体、３．９
．１０・・・アンカー。
特許出願人 株式会社イナックス
代理人 弁理士 重 野 剛
第１図
第４図
第６図
第７図
第８図
℃
第９図FIG. 1 is a perspective view of a radio wave absorber according to an embodiment of the present invention;
FIGS. 2 and 3 are sectional views of the same, and FIGS. 4 and 5 are sectional views showing another embodiment. FIG. 6 is a perspective view roughly showing another embodiment, and FIG. 7 is a sectional view of the same essential part. FIG. 8 is a perspective view showing still another embodiment, and FIG. 9 is an IX of FIG. 8.
- It is a sectional view along the IX line. 1...Radio wave absorber, 2...Radio wave absorber main body, 3.9
．． 10... Anchor. Patent Applicant Inax Co., Ltd. Agent Patent Attorney Tsuyoshi Shigeno Figure 1 Figure 4 Figure 6 Figure 7 Figure 8 ℃ Figure 9
Claims (1)
ンカーを取り付けてなるアンカーを有する電波吸収体。(1) A radio wave absorber having an anchor made of metal wire attached to the back side of the radio wave absorber body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25815187A JPH0199291A (en) | 1987-10-13 | 1987-10-13 | Radio wave absorber having anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25815187A JPH0199291A (en) | 1987-10-13 | 1987-10-13 | Radio wave absorber having anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0199291A true JPH0199291A (en) | 1989-04-18 |
Family
ID=17316232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25815187A Pending JPH0199291A (en) | 1987-10-13 | 1987-10-13 | Radio wave absorber having anchor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0199291A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617298U (en) * | 1992-01-29 | 1994-03-04 | 日立フェライト株式会社 | Radio wave absorption wall |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5615840U (en) * | 1979-07-18 | 1981-02-10 | ||
| JPS617491A (en) * | 1984-06-20 | 1986-01-14 | Seruko Kk | Signal processing circuit |
-
1987
- 1987-10-13 JP JP25815187A patent/JPH0199291A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5615840U (en) * | 1979-07-18 | 1981-02-10 | ||
| JPS617491A (en) * | 1984-06-20 | 1986-01-14 | Seruko Kk | Signal processing circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617298U (en) * | 1992-01-29 | 1994-03-04 | 日立フェライト株式会社 | Radio wave absorption wall |
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