JPH054312Y2 - - Google Patents
Info
- Publication number
- JPH054312Y2 JPH054312Y2 JP17812186U JP17812186U JPH054312Y2 JP H054312 Y2 JPH054312 Y2 JP H054312Y2 JP 17812186 U JP17812186 U JP 17812186U JP 17812186 U JP17812186 U JP 17812186U JP H054312 Y2 JPH054312 Y2 JP H054312Y2
- Authority
- JP
- Japan
- Prior art keywords
- radio wave
- absorbing material
- ferrite
- lid
- microwave oven
- 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.)
- Expired - Lifetime
Links
- 239000011358 absorbing material Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 15
- 229910000859 α-Fe Inorganic materials 0.000 claims description 15
- 230000002265 prevention Effects 0.000 claims description 12
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 10
- 229920003002 synthetic resin Polymers 0.000 claims description 8
- 239000000057 synthetic resin Substances 0.000 claims description 8
- 229920001169 thermoplastic Polymers 0.000 claims description 8
- 239000004416 thermosoftening plastic Substances 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 description 11
- 230000005484 gravity Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 1
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、電子レンジの機器本体と蓋体との間
隙からの電波の漏洩を防止する電子レンジの電波
漏洩防止装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a radio wave leakage prevention device for a microwave oven that prevents radio waves from leaking from a gap between the appliance body and the lid of the microwave oven.
従来、例えば電子レンジ、受像機、受信機、フ
ロツピーデイスクドライブ装置等の一般電子機器
においては、その作動時に電波を発生することが
ある。このために、それぞれの装置では電波漏洩
の防止装置が設けられており、例えば、電子レン
ジにおいて、熱可塑性合成樹脂を基材とし、これ
にフエライトを70重量％程度混入させて形成した
電波減衰定数8dB程度の電波吸収材料を機器本体
と該機器本体を閉止する蓋体との間に粘着等の手
段により介在されている。そしてフエライトの配
合量は一般的に増加させるほど電波吸収能も高ま
ると信じられており、この観点から成型可能な範
囲でフエライト配合量を多くすることが漏洩電波
を少なくする観点からは好ましいとされている。
2. Description of the Related Art Conventionally, general electronic devices such as microwave ovens, television sets, receivers, floppy disk drive devices, etc. sometimes generate radio waves when they operate. For this reason, each device is equipped with a device to prevent radio wave leakage.For example, in a microwave oven, a radio wave attenuation constant made of thermoplastic synthetic resin as a base material and mixed with about 70% by weight of ferrite is used. A radio wave absorbing material of about 8 dB is interposed between the device body and a lid that closes the device body by means of adhesive or the like. It is generally believed that the radio wave absorption ability increases as the amount of ferrite increases, and from this point of view, it is considered preferable to increase the amount of ferrite within the moldable range from the perspective of reducing leakage radio waves. ing.
しかし、これら電波減衰定数が8dB以上のもの
においては電波吸収材率が大きいことから、漏洩
電波が微弱な場合は問題はないものの、電子レン
ジのように強い漏洩電波が存在する場合は、電波
漏洩防止装置が部分的に発熱して部分的に溶損す
ることがあつた。又、フエライトの含有率が大き
いため脆くなつて機械的強度が弱くなる問題があ
るとともに比重も2.5以上となつて重量が大とな
り取り扱いにくくなる問題もあつた。更に、機械
的強度が弱いことから薄型化がはかれないという
問題もあつた。
However, since the rate of radio wave absorbing material is large in these materials with a radio wave attenuation constant of 8 dB or more, there is no problem if the leaked radio waves are weak, but if there is a strong leaked radio wave such as a microwave oven, radio wave leakage may occur. There were cases in which the prevention device partially generated heat and was partially melted. Furthermore, since the content of ferrite is high, there is a problem that the product becomes brittle and has a weak mechanical strength, and also has a specific gravity of 2.5 or more, making it heavy and difficult to handle. Furthermore, there was also the problem that it was not possible to make the device thinner due to its weak mechanical strength.
本考案はこのような問題点に鑑み、電子レンジ
からの電波漏洩を防止するのに充分な電波吸収能
を有するとともに、発熱による溶損がなくて耐久
性にも優れ、しかも機械的強度にも優れて薄型化
も可能であり、加えて軽量化も可能な電子レンジ
の電波漏洩防止装置を提供せんとするものであ
る。 In view of these problems, the present invention has sufficient radio wave absorption ability to prevent radio wave leakage from microwave ovens, has excellent durability without melting due to heat generation, and has excellent mechanical strength. It is an object of the present invention to provide a radio wave leakage prevention device for a microwave oven that can be made thinner and lighter in weight.
前記本考案の目的を達成するために、本考案は
熱可塑性合成樹脂基材にフエライト及び／又はマ
グネタイトを30〜50重量％を含有せしめて電波減
衰定数を2dB〜5dBに調整した電波吸収材料で機
器本体と蓋体との間に電波吸収材料を介在させて
なる電子レンジの電波漏洩防止装置を提供せんと
するものである。
In order to achieve the above object of the present invention, the present invention is a radio wave absorbing material in which a thermoplastic synthetic resin base material contains 30 to 50% by weight of ferrite and/or magnetite to adjust the radio wave attenuation constant to 2 dB to 5 dB. It is an object of the present invention to provide a radio wave leakage prevention device for a microwave oven in which a radio wave absorbing material is interposed between the main body of the device and the lid.
以上の如く、本考案にかかる電子レンジの電波
漏洩防止装置は熱可塑性合成樹脂基材にフエライ
ト及び／又はマグネタイトを30〜50重量％含有せ
しめて電波減衰定数を2dB〜5dBに調整した電波
吸収材料を用いているので、電子レンジからの電
波漏洩を防止するに充分な電波吸収能を発揮しな
がら、過剰な電波吸収による電波吸収材料の溶損
もなく、しかも比重は1.7以下と軽量で取り扱い
が容易であり、加えて機械的強度も従来ものに比
べて大きなものとすることができる。
As described above, the radio wave leakage prevention device for a microwave oven according to the present invention is a radio wave absorbing material made of a thermoplastic synthetic resin base material containing 30 to 50% by weight of ferrite and/or magnetite to adjust the radio wave attenuation constant to 2 dB to 5 dB. Because it uses a microwave oven, it exhibits sufficient radio wave absorption ability to prevent radio wave leakage from the microwave oven, and there is no erosion of the radio wave absorbing material due to excessive radio wave absorption.Moreover, the specific gravity is less than 1.7, making it lightweight and easy to handle. It is easy to use, and in addition, the mechanical strength can be increased compared to conventional ones.
本考案の詳細を更に図示した実施例にもとづき
説明する。図面は、本考案にかかる電子レンジの
電波漏洩防止装置の一実施例である。本電波漏洩
防止装置は、熱可塑性合成樹脂基材にフエライト
及び／又はマグネタイトを30〜50重量％含有せし
めて電波減衰定数を2dB〜5dBに調整した電波吸
収材料で機器本体と蓋体の当接面の少なくとも一
方を形成し、機器本体と蓋体との間に電波吸収材
料を介在させた構成としている。即ち、図中１と
して示すものが機器本体で、２が蓋体である。機
器本体１に対して蓋体２は、開閉自在で設けられ
ており、この両部材の当接する内面の少なくとも
一方、図例のものにおいては蓋体２内面側に電波
吸収材料３を内設している。電波吸収材料３は、
例えばポリプロピレン、塩化ビニル、ポリアミ
ド、ポリフエニレンサルフアイド、ポリエチレン
等の熱可塑性合成樹脂基材にフエライト及び／又
はマグネタイトを30〜50重量％含有せしめて、そ
の電波減衰定数を2dB〜5dBに設定している。フ
エライトとしては、マンガンジンクフエライト、
ニツケルジンクフエライト等のものが使用でき
る。前記基材に前記フエライト及び／又はマグネ
タイトを30〜50重量％を含有せしめたものは、そ
の比重が1.7以下となつて重量が小さく、しかも
機械的強度の大なるものが得られる上に、電波減
衰定数を2dB〜5dBの範囲に設定することができ
る為である。そしてこのような含有率及び電波減
衰定数とすることによつて、電子レンジからの電
波漏洩を防止するに充分な電波吸収能を発揮しな
がら、電波が過剰に吸収されることを抑制して電
波吸収材料が部分的に溶損することも防いでい
る。実施例のものにおいては、この電波吸収材料
３を蓋体２内面に設けているが、両部材の当接内
面の少なくとも一方に設ければ、機器本体１内か
ら漏洩する電波の吸収効果を得ることが可能であ
り、従つて、機器本体１の口縁に電波吸収材を塗
布又は附着等させることも他の実施例として採用
できる。
The details of the present invention will be explained based on further illustrated embodiments. The drawing shows an embodiment of the radio wave leakage prevention device for a microwave oven according to the present invention. This radio wave leakage prevention device uses a radio wave absorbing material made of a thermoplastic synthetic resin base material containing 30 to 50% by weight of ferrite and/or magnetite to adjust the radio wave attenuation constant to 2 dB to 5 dB. At least one of the surfaces is formed, and a radio wave absorbing material is interposed between the device body and the lid. That is, what is shown as 1 in the figure is the main body of the device, and 2 is the lid. A lid body 2 is provided to the main body 1 of the device so as to be openable and closable, and a radio wave absorbing material 3 is provided inside at least one of the inner surfaces where these two members come into contact, i.e., on the inner surface side of the lid body 2 in the illustrated example. ing. The radio wave absorbing material 3 is
For example, a thermoplastic synthetic resin base material such as polypropylene, vinyl chloride, polyamide, polyphenylene sulfide, or polyethylene is made to contain 30 to 50% by weight of ferrite and/or magnetite, and its radio wave attenuation constant is set to 2 dB to 5 dB. ing. As ferrite, manganese zinc ferrite,
Materials such as nickel zinc ferrite can be used. The base material containing 30 to 50% by weight of the ferrite and/or magnetite has a specific gravity of 1.7 or less, which makes it small in weight and has high mechanical strength. This is because the attenuation constant can be set in the range of 2 dB to 5 dB. By setting such a content rate and radio wave attenuation constant, while exhibiting sufficient radio wave absorption ability to prevent radio wave leakage from the microwave oven, radio waves can be suppressed from being excessively absorbed. It also prevents the absorbent material from being partially eroded. In the embodiment, the radio wave absorbing material 3 is provided on the inner surface of the lid 2, but if it is provided on at least one of the abutting inner surfaces of both members, the effect of absorbing radio waves leaking from within the device body 1 can be obtained. Therefore, it is also possible to apply or attach a radio wave absorbing material to the edge of the device main body 1 as another embodiment.
以上の如く、本考案にかかる電子レンジの電波
漏洩防止装置を用いれば、機器本体と蓋体との間
隙から外部に漏洩する電波の強度を極めて弱いも
のとすることができるとともに、本電波漏洩防止
装置に用いる電波吸収材料３はその電波減衰定数
を抑制しているので、過剰な電波吸収により電波
吸収材料３が部分的に溶損するといつた弊害もな
いのである。そして、この電波吸収材料３はフエ
ライト及び／又はマグネタイトの含有量が少ない
為、比重が小さく、軽量であり、且つ機械的強度
にも優れ、その他の特性も熱可塑性合成樹脂基材
の特性を積極的に生かすことができのである。
尚、前記フエライト及び／又はマグネタイトの含
有量は30重量％以下においては電波吸収効果が低
くなる為使用できず、他方、50重量％以上では電
波吸収能は高まるものの、過剰な電波吸収により
電波吸収材料が部分的に溶損するおそれがあり、
加えて比重が大きくなつたり、電波吸収材料の機
械的強度が弱くなつて例えばシート状に加工した
もの機械的強度が弱くなる為に除外される。 As described above, by using the radio wave leakage prevention device for a microwave oven according to the present invention, the intensity of radio waves leaking to the outside through the gap between the device body and the lid can be made extremely weak, and the radio wave leakage prevention device according to the present invention can be made extremely weak. Since the radio wave absorbing material 3 used in the device suppresses its radio wave attenuation constant, there is no problem such as partial melting and damage of the radio wave absorbing material 3 due to excessive radio wave absorption. Since this radio wave absorbing material 3 has a low content of ferrite and/or magnetite, it has a low specific gravity, is lightweight, has excellent mechanical strength, and has other properties that are superior to those of the thermoplastic synthetic resin base material. It can be put to good use.
If the content of ferrite and/or magnetite is less than 30% by weight, it cannot be used because the radio wave absorption effect decreases, whereas if the content is more than 50% by weight, the radio wave absorption ability increases, but the radio wave absorption becomes poor due to excessive radio wave absorption. There is a risk of partial melting of the material.
In addition, if the specific gravity increases or the mechanical strength of the radio wave absorbing material decreases, for example, materials processed into a sheet shape are excluded because the mechanical strength becomes weak.
以上の如く、本考案にかかる電子レンジの電波
漏洩防止装置は、熱可塑性合成樹脂基材にフエラ
イト及び／又はマグネタイトを30〜50重量％含有
せしめて電波減衰定数を2dB〜5dBに調整した電
波吸収材料で機器本体と蓋体の当接内面の少なく
とも一方を形成し、機器本体と蓋体との間に電波
吸収材料を介在させてなるから、電子レンジから
の電波漏洩を防止することができるとともに、過
剰な電波吸収により電波吸収材料が溶損すること
も完全に防止でき、耐久性に優れた電波漏洩防止
装置を提供することができる。又、本装置は、フ
エライト及び／又はマグネタイトの含有量が従来
品に比べて少ないから、軽量で取り扱いも容易で
あり、しかも機械的強度も従来品に比べて強いも
のが得られ、且つ薄型化も容易である。
As described above, the radio wave leakage prevention device for a microwave oven according to the present invention is a radio wave absorbing device in which a thermoplastic synthetic resin base material contains 30 to 50% by weight of ferrite and/or magnetite, and the radio wave attenuation constant is adjusted to 2 dB to 5 dB. Since at least one of the contact inner surfaces of the device body and the lid is made of a material, and a radio wave absorbing material is interposed between the device body and the lid, radio wave leakage from the microwave oven can be prevented. Therefore, it is possible to completely prevent the radio wave absorbing material from being melted and damaged due to excessive absorption of radio waves, and it is possible to provide a radio wave leakage prevention device with excellent durability. In addition, this device has a lower content of ferrite and/or magnetite than conventional products, so it is lightweight and easy to handle, and has greater mechanical strength than conventional products, and is thinner. is also easy.
図面は本考案の実施例を示す断面説明図であ
る。
１……機器本体、２……蓋体、３……電波吸収
材料。
The drawings are cross-sectional explanatory views showing embodiments of the present invention. 1...Device main body, 2...Lid body, 3...Radio wave absorbing material.
Claims (1)
マグネタイトを30〜50重量％含有せしめて電波減
衰定数を2dB〜5dBに調整した電波吸収材料で機
器本体と蓋体の当接内面の少なくとも一方を形成
し、機器本体と蓋体との間に電波吸収材料を介在
させてなる電子レンジの電波漏洩防止装置。 At least one of the abutting inner surfaces of the device body and the lid is formed of a radio wave absorbing material in which a thermoplastic synthetic resin base material contains 30 to 50% by weight of ferrite and/or magnetite and the radio wave attenuation constant is adjusted to 2 dB to 5 dB. , a radio wave leakage prevention device for a microwave oven, which includes a radio wave absorbing material interposed between the device body and the lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17812186U JPH054312Y2 (en) | 1986-11-19 | 1986-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17812186U JPH054312Y2 (en) | 1986-11-19 | 1986-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6382990U JPS6382990U (en) | 1988-05-31 |
| JPH054312Y2 true JPH054312Y2 (en) | 1993-02-02 |
Family
ID=31119963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17812186U Expired - Lifetime JPH054312Y2 (en) | 1986-11-19 | 1986-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH054312Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4189234B2 (en) * | 2003-02-19 | 2008-12-03 | 京セラ株式会社 | Radio wave absorbing lid member and high-frequency device using the same |
-
1986
- 1986-11-19 JP JP17812186U patent/JPH054312Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6382990U (en) | 1988-05-31 |
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