JPH03235398A - Case for mobile body communication use - Google Patents
Case for mobile body communication useInfo
- Publication number
- JPH03235398A JPH03235398A JP2031826A JP3182690A JPH03235398A JP H03235398 A JPH03235398 A JP H03235398A JP 2031826 A JP2031826 A JP 2031826A JP 3182690 A JP3182690 A JP 3182690A JP H03235398 A JPH03235398 A JP H03235398A
- Authority
- JP
- Japan
- Prior art keywords
- case
- mobile communication
- synthetic resin
- casing
- noise
- 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
- 238000004891 communication Methods 0.000 title description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 23
- 239000004917 carbon fiber Substances 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 14
- 239000000057 synthetic resin Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 5
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 3
- 238000010295 mobile communication Methods 0.000 claims description 21
- 230000008018 melting Effects 0.000 claims description 3
- 150000002430 hydrocarbons Chemical group 0.000 claims description 2
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 2
- 150000002736 metal compounds Chemical class 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 5
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- -1 carbon hydrogen Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011304 carbon pitch Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910021472 group 8 element Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/009—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、例えば携帯電話等の移動体通信を行う装置を
格納する筐体に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a housing for housing a device that performs mobile communication, such as a mobile phone.
［従来の技術］
従来より、マイクロコンピュータを中心とする電子部品
を備えた電子機器が多く生産さね各種の通信装置や自動
車等に急速に普及するとともに、使用されるマイクロコ
ンピュータの数の増力匡 クロック周波数の高周波化が
進められている。特に、近年で（飄 携帯電話や車載電
話（カー電話）等の移動体通信装置の発達がめざましく
、そのサイズが小型化するに従って、急速に一般に普及
するようになっている。[Prior Art] Electronic devices equipped with electronic components, mainly microcomputers, have been produced in large numbers in the past, but they have rapidly spread to various communication devices, automobiles, etc., and the number of microcomputers used is increasing. Clock frequencies are increasing in frequency. In particular, in recent years, the development of mobile communication devices such as mobile phones and in-vehicle phones (car phones) has been remarkable, and as their sizes become smaller, they are rapidly becoming more popular.
ところが、上記移動体通信装置は、通常、屋外や、車両
あるいは飛行機等の輸送装置内で使用されることが多い
ので、ノイズ等が入りやすく、良好な通信ができないこ
とがあっ旭
即ち、゛上記の様な携帯電話等の移動体通信装置は、微
弱電流によって駆動制御されているので、外界からの電
磁波ノイズや移動体通信装置に格納されている電子部品
の発生する電磁波ノイズが、信号線に乗ったり電子部品
に直接作用して、電子部品の破損、故胤 誤作動等の不
具合が生じることがある。更に電子部品のうち磁気記録
素子匝小さなエネルギにて高密度に磁性体を磁化させた
ものであるため、磁石等の外部磁界によって記録情報の
消失といった悪影響をうけることがあった。However, since the above-mentioned mobile communication device is usually used outdoors or in a transportation device such as a vehicle or an airplane, it is easy for noise etc. to enter and good communication may not be possible. Mobile communication devices such as mobile phones are driven and controlled by weak currents, so electromagnetic noise from the outside world and electromagnetic noise generated by electronic components stored in the mobile communication device can interfere with signal lines. This may cause problems such as damage to electronic parts, malfunctions, etc. due to direct contact with electronic parts. Furthermore, among electronic components, magnetic recording elements are devices in which a magnetic material is magnetized at high density with a small amount of energy, and therefore may be adversely affected by external magnetic fields such as magnets, such as loss of recorded information.
この電磁気障害の対策として、良導性の金属、例えば鉄
製の筐体や、カーボンブラック粒子を導電性フィラーと
して含有する合成樹脂製の筐体に電子部品を収納するこ
とによって、電子部品を外部から電磁的に遮断する技術
が考えられている。As a countermeasure against this electromagnetic interference, electronic components can be removed from the outside by housing them in a case made of a metal with good conductivity, such as iron, or a case made of synthetic resin containing carbon black particles as a conductive filler. Electromagnetic blocking technology is being considered.
［発明が解決しようとする課題］
しかＬながら、この様な電磁気障害は、通常の電子機器
にとっても重要な問題であるが、特に、屋外、車両又は
飛行機等の内部で、移動体通信用装置として使用される
場合には、ノイズの影響が大きく極めて重要な問題とな
り、更に、移動体通信用装置は持ち歩くものであるので
、軽量でしかも十分な強度を必要とするという問題があ
り、上記技術では必ずしも十分ではなかった。[Problem to be solved by the invention] However, such electromagnetic interference is an important problem for ordinary electronic equipment, but it is especially important for mobile communication equipment outdoors, inside a vehicle, or an airplane. When used as a device, the influence of noise becomes a very important problem.Furthermore, since mobile communication devices are portable, there is a problem that they need to be lightweight and have sufficient strength. That wasn't necessarily enough.
つまり、上記カーボンブラック粒子を含有する合成樹脂
製の電磁気シールド用筐体では、軽量であるという利点
を備えているが、カーボンブラック粒子の含有量が増加
すると、母材である合成樹脂の強度が低下するので、そ
の含有量を抑制しなければならない。この筐体の強度を
維持するための制限により、筐体の電気抵抗率はある値
までしか低下せず、大きな強度を要求される移動体通信
用筐体としては不十分である。In other words, an electromagnetic shielding case made of synthetic resin containing carbon black particles has the advantage of being lightweight, but as the content of carbon black particles increases, the strength of the synthetic resin base material decreases. Therefore, its content must be suppressed. Due to this restriction for maintaining the strength of the casing, the electrical resistivity of the casing is reduced only to a certain value, which is insufficient for a casing for mobile communication which requires great strength.
一方、鉄製の電磁気シールド用筐体（飄低電気抵抗率及
び高透磁率を備えているので、電子部８二発生する電磁
波ノイズばかりでなく、磁石等からの低周波磁界に基づ
く電子部品の故阪誤作動等をも防止するすることができ
る。しがし、移動体通信用筐体に使用するために鉄板を
薄くすると強度が低下するので、軽量化することが困難
であった。On the other hand, the iron electromagnetic shielding case (which has low electrical resistivity and high magnetic permeability) not only prevents electromagnetic noise generated by the electronic section 82, but also prevents damage to electronic components due to low-frequency magnetic fields from magnets, etc. However, if the iron plate is made thinner for use in a mobile communication casing, its strength will be reduced, so it has been difficult to reduce the weight.
即ち、移動体通信用装置（表屋外で使用することが多い
ので外界からのノイズの影響を受けやすく、特に車両や
飛行機等の内部で使用する場合には、車両や飛行機が大
きなノイズの発生源となるので、極めて電磁的障害を受
けやすくなるという問題があ吠更に、屋外等や車両等の
過酷な環境で酷使されることが多いので、大きな強度が
必要とさ札 その上 携帯するのに便利な様に軽量であ
ることが要求されていた。In other words, mobile communication devices (as they are often used outdoors, are easily affected by noise from the outside world, and especially when used inside a vehicle or airplane, the vehicle or airplane may be the source of a large amount of noise). Therefore, there is the problem that it is extremely susceptible to electromagnetic interference.Furthermore, it is often used outdoors and in harsh environments such as in vehicles, so it requires great strength. It was required to be lightweight for convenience.
本発明は、ノイズに強くかつ頑丈で軽量な移動体通信用
筐体を提供することを目的とする。An object of the present invention is to provide a mobile communication casing that is resistant to noise, sturdy, and lightweight.
［課題を解決するための手段］
上記目的を達成するためになされた本発明（上携帯また
は移動して通信を行う装置を格納する移動体通信用筐体
において、
該筐体が、炭化水素の熱分解による気相法によって生成
し、カリ高融点金属及び／又は該金属の化合物の超微細
粉末を成長開始部として成長させた炭素繊維が加用され
た合成樹脂にて成形されたことを特徴とする移動体通信
用筐体を要旨とする。[Means for Solving the Problems] The present invention has been made to achieve the above object (a mobile communication casing for housing a portable or mobile communication device, wherein the casing is made of hydrocarbon It is characterized by being molded from a synthetic resin to which carbon fibers produced by a vapor phase method using pyrolysis and grown using ultrafine powder of a potassium high melting point metal and/or a compound of said metal as a growth starting point are added. The gist of this paper is a mobile communication casing.
［作用］
本発明の移動体通信用筐体は、特定の炭素繊維によって
補強されたポリエステル系樹脂、ビニル系樹脂、ポリア
ミド系樹脂等の合成樹脂からなる筐体である。[Function] The mobile communication casing of the present invention is a casing made of synthetic resin such as polyester resin, vinyl resin, polyamide resin, etc., reinforced with specific carbon fibers.
この炭素繊維は、ポリアクリロニトリル系炭素繊維又は
ピッチ系炭素繊維と、異なり、高融点金属及び／又はそ
の化合物の超微細粉末の直径と略等しい微小直径のウィ
スカ状のものとして生成されたものである。このため、
母材である合成樹脂との密着性、分散性に優ね、使用す
る合成樹脂のあらゆる部位に行き渡り均一に分散保持さ
れう電磁波の透過を均一に低減できる。Unlike polyacrylonitrile-based carbon fibers or pitch-based carbon fibers, this carbon fiber is produced as a whisker-like substance with a minute diameter approximately equal to the diameter of ultrafine powder of a high melting point metal and/or its compound. . For this reason,
It has excellent adhesion and dispersibility with the synthetic resin that is the base material, and can uniformly reduce transmission of electromagnetic waves by spreading and maintaining uniform distribution throughout all parts of the synthetic resin used.
また本発明で使用される炭素繊維（よ その規則正しい
黒鉛結晶層に基づき、炭素繊維中で最も小さな電気抵抗
率、即ち良導性を備え、また炭素繊維固有の特性である
引っ張り強度等の機械的特性に優れている。従って、母
材である合成樹脂中に連鎖状に分散保持された炭素繊維
が、筐体に導電性を付与するとともに、その機械的強度
も向上させている。こうして導電性を備えた筐体（よ外
来の電磁波ノイズを反射し、吸収し、筐体の内部空間と
外部空間とを電磁気的に遮断して、電磁気シールドの作
用をする。In addition, the carbon fiber used in the present invention (based on its regular graphite crystal layer) has the lowest electrical resistivity among carbon fibers, that is, good conductivity, and has mechanical properties such as tensile strength, which is a characteristic unique to carbon fiber. It has excellent properties. Therefore, the carbon fibers dispersed and held in a chain form in the synthetic resin base material not only imparts electrical conductivity to the casing, but also improves its mechanical strength. A housing equipped with a casing (which reflects and absorbs external electromagnetic noise, electromagnetically isolates the internal space and external space of the casing, and acts as an electromagnetic shield).
そして、この導電性の度合、即ち電気抵抗率（上上記炭
素の連鎖の度合である加用（使用）量によって決定され
る。更（二 炭素繊維の加用量が、各炭素繊維の相互接
触に必要な量に達すると、筐体の電気抵抗率は炭素繊維
自体の電気抵抗率に近い値となる。The degree of conductivity, that is, the electrical resistivity (determined by the amount of carbon fiber added (used), which is the degree of carbon chaining described above). Once the required amount is reached, the electrical resistivity of the casing will be close to that of the carbon fiber itself.
この炭素繊維の加用量は、使用する合成樹脂の２０体積
％程度を越える値であれば電気抵抗値が低下するので望
ましいが、特に合成樹脂の３０〜５０体積％程度の値で
あれば一層好適である。It is desirable that the amount of carbon fiber added exceeds about 20% by volume of the synthetic resin used because the electrical resistance value will decrease, but it is more preferable if the amount of carbon fiber added exceeds about 30 to 50% by volume of the synthetic resin. It is.
尚、本発明に用いる高融点金属は、炭素水素の熱分解の
温度である９５０〜１３ｏＯ°Ｃにおいて気化しない金
属であって、ＴｉやＺｒ等の周期律表の第４８族 Ｖや
Ｎｂ等の第５ａ嵐 ＣｒやＭＯ等の第６ａ嵐 Ｍｎ等の
第７ａ朧 ＦｅやＣ。The high-melting point metal used in the present invention is a metal that does not vaporize at 950 to 13oC, which is the temperature for thermal decomposition of carbon hydrogen, and includes metals from group 48 of the periodic table such as Ti and Zr, and metals such as V and Nb. 5a storm 6a storm such as Cr and MO 7a hazy such as Mn Fe and C.
等の第８族の元素が適し、特に望ましいのは、Ｆｅ、
Ｃｏ、 Ｎｉ、 Ｖ、 Ｎｂ、 Ｔａ、 Ｔｉ、 Ｚｒ
である。そして、かかる金属の化合物には、その酸化物
、窒化物、その他の塩類がある。Group 8 elements such as Fe, etc. are suitable, and particularly desirable are Fe,
Co, Ni, V, Nb, Ta, Ti, Zr
It is. Compounds of such metals include their oxides, nitrides, and other salts.
［実施例］
以下、本発明の一実施例を図面に基づいて説明する。第
１図は、本発明が適用された携帯電話］を示している。[Example] Hereinafter, an example of the present invention will be described based on the drawings. FIG. 1 shows a mobile phone to which the present invention is applied.
図に示すように、携帯電話１の受話部２と送話部３との
間には、ブツシュボタン４が配置されており、携帯電話
１の筺体５の内部には、各種の電子部品６やバッテリ７
等が格納されている。As shown in the figure, a button 4 is arranged between the receiving part 2 and the transmitting part 3 of the mobile phone 1, and various electronic components 6 are inside the housing 5 of the mobile phone 1. and battery 7
etc. are stored.
この筺体５は、ＡＢＳ樹脂あるいはナイロン（例えば６
ローナイロン）等から形成されており、例えばＡＢＳ樹
脂の場合には、ＡＢＳ樹脂樹脂６損
いるもの等を採用することができる。また、この筐体５
の内周面に（表磁石等の低周波磁界の影響を低減するた
めに、金属層８が形成されている。This housing 5 is made of ABS resin or nylon (for example, 6
For example, in the case of ABS resin, it is possible to use a material containing 6 parts of ABS resin. In addition, this housing 5
A metal layer 8 is formed on the inner peripheral surface (in order to reduce the influence of low frequency magnetic fields such as surface magnets).
次に、この筺体５の製造方法について説明する。Next, a method of manufacturing this housing 5 will be explained.
まず、９５０〜１３００’Ｃの炉内で、ベンゼンを熱分
解する気相法によって、粒径０．０２μｍ〜０．０３μ
ｍの鉄粉末を成長開始剤として、直径Ｏ０１μｍ〜０．
５μｍ，長さ０． １ 〜１ｍｍの炭素繊維を成長さ
せる。この炭素繊維をＡＢＳ樹脂中に加え、この炭素繊
維を含有したＡＢＳ樹脂を用いて、射出成形又は真空成
形等により厚さ２ｍｍの筐体５を形成する。First, in a furnace at 950 to 1300'C, benzene is thermally decomposed using a gas phase method, with a particle size of 0.02 μm to 0.03 μm.
m iron powder as a growth initiator, the diameter is 001 μm to 0.0 μm.
5 μm, length 0. Grow carbon fibers of 1 to 1 mm. The carbon fibers are added to an ABS resin, and the ABS resin containing the carbon fibers is used to form a casing 5 with a thickness of 2 mm by injection molding, vacuum forming, or the like.
次に、Ｎ１又はＦｅからなる厚さ０．０２ｍｍの金属層
８を筺体５の内周面に形成するが、この金属層８は、真
空蒸着，電解メツキ、無電解メツキ。Next, a metal layer 8 made of N1 or Fe and having a thickness of 0.02 mm is formed on the inner peripheral surface of the housing 5, and this metal layer 8 is formed by vacuum deposition, electrolytic plating, or electroless plating.
塗装等［二よって形成される。Painting, etc. [formed by two.
この様にして形成された筺体５に電子部品６が格納され
た携帯電話］は、下記の効果を奏する。The mobile phone in which the electronic component 6 is housed in the housing 5 formed in this manner has the following effects.
即ち、従来品と比べて、炭素繊維を含んでいるので導電
性に優れている。従って、ノイズの影響を受けやすい屋
外や、ノイズの発生源が近くにある車両又は飛行機の内
部で使用しても、ノイズの影ｇ２低減して好適な送受信
ができるという効果がある。That is, compared to conventional products, it has superior conductivity because it contains carbon fiber. Therefore, even when used outdoors where noise is easily affected, or inside a vehicle or airplane where a noise source is nearby, there is an effect that the noise shadow g2 is reduced and suitable transmission and reception can be performed.
しかも、軽量であるにもかかわらず頑丈であるので、ど
こへでも容易に携帯でき便利であり、その土層外の様な
過酷な環境で使用しても破損したりすることが少ない。In addition, it is lightweight but sturdy, so it is convenient to carry anywhere, and it is unlikely to be damaged even when used in harsh environments such as outside the soil layer.
更に、本実施例の携帯電話１（表呈体５の内周面にＮｉ
等からなる金属層８を備えており、磁石等の低周波磁気
を遮断する能力に優れているので、筐体５の内部に収納
された電子部品６の故障や誤作動を好適に防止すること
ができる。Furthermore, the mobile phone 1 of this embodiment (the inner peripheral surface of the display body 5 is coated with Ni)
It is equipped with a metal layer 8 consisting of a metal layer 8, etc., and has an excellent ability to block low-frequency magnetism such as a magnet, so that breakdowns and malfunctions of the electronic components 6 housed inside the housing 5 can be suitably prevented. I can do it.
また、ＡＢＳ樹脂に含有させる炭素繊維は、例えば直径
：長さ＝ｌ： １００程度の短繊維を使用できるので、
筐体５の成形性がよい。従って、携帯電話］の筐体５の
様な複雑な形状をしている場合でも、射出成形等によっ
て所望の厚さや形状の筐体５を良好に製造することがで
き、局部強度も均一にすることができる。In addition, the carbon fibers to be included in the ABS resin can be short fibers with diameter: length = l: about 100, for example.
The moldability of the housing 5 is good. Therefore, even if the case 5 has a complicated shape, such as the case 5 of a mobile phone, it is possible to manufacture the case 5 with the desired thickness and shape by injection molding, etc., and the local strength can be made uniform. be able to.
以上本発明の実施例について説明したが、本発明はこの
ような実施例に何等限定されるものではなく、本発明の
要旨を逸脱しない範囲内において種々なる態様で実施し
得ることは勿論である。Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments in any way, and it goes without saying that it can be implemented in various forms without departing from the gist of the present invention. .
例えば、携帯電話］以外にも、車載電話等の各種の移動
体通信用筐体に適用できることは勿論であり、また、炭
素繊維を含有させる樹脂も、ＡＢＳ樹脂やナイロン以外
の各種の樹脂を採用できる。For example, in addition to mobile phones, it can of course be applied to various mobile communication casings such as in-vehicle phones, and various resins other than ABS resin and nylon can be used as the resin containing carbon fiber. can.
［発明の効果］
以上詳記したように本発明の移動体通信用筐体は、機械
的特性及び導電性に優れた特定の炭素繊維によって補強
された合成樹脂材を用いている。[Effects of the Invention] As detailed above, the mobile communication casing of the present invention uses a synthetic resin material reinforced with a specific carbon fiber having excellent mechanical properties and conductivity.
従って、筐体の内部に収納した電子部品を外部空間から
電磁気的に十分にシールドすることにより、屋外や車両
等の内部のような多くのノイズの影響を受けやすい環境
においても、電磁気障害を好適に回避することができる
。更に、本発明の移動帯通信用筐体は、軽量でしかも大
きな強度を有しているので、携帯に便利であり、しかも
屋外等の過酷な環境で使用しても破損することが少ない
という顕著な利点をもつ。Therefore, by sufficiently electromagnetically shielding the electronic components housed inside the housing from the outside space, it is possible to prevent electromagnetic interference even in environments susceptible to many noises, such as outdoors or inside a vehicle. can be avoided. Furthermore, the mobile communication casing of the present invention is lightweight and has great strength, making it convenient to carry, and it is also notable for being less likely to break when used in harsh environments such as outdoors. It has many advantages.
第１図は本発明の実施例の携帯電話を示す説明図である
。
］ ・・・ 携帯電話
５ ・・・ 筐体
８ ・・・ 金属層FIG. 1 is an explanatory diagram showing a mobile phone according to an embodiment of the present invention. ] ... Mobile phone 5 ... Housing 8 ... Metal layer
Claims (1)
通信用の筐体において、 該筐体が、炭化水素の熱分解による気相法によって生成
し、かつ高融点金属及び／又は該金属の化合物の超微細
粉末を成長開始部として成長させた炭素繊維が加用され
た合成樹脂にて成形されたことを特徴とする移動体通信
用筐体。[Scope of Claims] 1. A mobile communication casing for housing a portable or mobile communication device, the casing being produced by a gas phase method using thermal decomposition of hydrocarbons and made of a high melting point metal. and/or a housing for mobile communication, characterized in that it is molded from a synthetic resin to which carbon fibers grown using ultrafine powder of the metal compound as a growth starting part are added.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2031826A JPH03235398A (en) | 1990-02-13 | 1990-02-13 | Case for mobile body communication use |
| DE9101511U DE9101511U1 (en) | 1990-02-13 | 1991-02-09 | |
| DE4104038A DE4104038A1 (en) | 1990-02-13 | 1991-02-09 | HOUSING FOR A PORTABLE COMMUNICATION DEVICE |
| GB9102919A GB2240782B (en) | 1990-02-13 | 1991-02-12 | Housing for a portable communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2031826A JPH03235398A (en) | 1990-02-13 | 1990-02-13 | Case for mobile body communication use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03235398A true JPH03235398A (en) | 1991-10-21 |
Family
ID=12341884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2031826A Pending JPH03235398A (en) | 1990-02-13 | 1990-02-13 | Case for mobile body communication use |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH03235398A (en) |
| DE (2) | DE4104038A1 (en) |
| GB (1) | GB2240782B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2647589B2 (en) * | 1992-01-27 | 1997-08-27 | 矢崎総業株式会社 | Composite sheet for electromagnetic wave shielding |
| US6259896B1 (en) | 1994-02-15 | 2001-07-10 | Nokia Mobile Phones Limited | Device for radio communication |
| FI930646A (en) * | 1993-02-15 | 1994-08-16 | Increa Oy | radio device |
| IT1273282B (en) * | 1994-04-01 | 1997-07-07 | Sevenlife Sas Di Dallapasqua A | ELECTROMAGNETIC EMISSIONS SCREEN IN CASES FOR PORTABLE TRANSCEIVERS |
| WO1997008926A2 (en) * | 1995-08-31 | 1997-03-06 | Siemens Aktiengesellschaft | Method of manufacturing a housing with a shielding effect for radio equipment |
| WO1997008927A2 (en) * | 1995-08-31 | 1997-03-06 | Siemens Aktiengesellschaft | Method of manufcturing a radio-housing part with a shielding effect |
| DE29619279U1 (en) * | 1996-11-06 | 1996-12-19 | Beckmann Rolf | Electrically heatable device |
| GB2360905A (en) * | 2000-03-30 | 2001-10-03 | Nokia Mobile Phones Ltd | Portable electronic apparatus |
| JP3642029B2 (en) | 2001-02-06 | 2005-04-27 | 日本電気株式会社 | Mobile phone |
| NO20014376L (en) * | 2001-09-07 | 2003-03-10 | Pe Dev As | Method and apparatus for shielding from electromagnetic fields |
| DE202016008419U1 (en) * | 2015-12-23 | 2017-12-20 | Apple Inc. | Housing with metallic inner surface layer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60104160A (en) * | 1983-11-11 | 1985-06-08 | Asahi Chem Ind Co Ltd | Thermoplastic resin composition |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1321863C (en) * | 1986-06-06 | 1993-09-07 | Howard G. Tennent | Carbon fibrils, method for producing the same, and compositions containing same |
| JPH0777301B2 (en) * | 1988-11-04 | 1995-08-16 | 北川工業株式会社 | Enclosure for electromagnetic shield |
| JPH0712119B2 (en) * | 1988-11-04 | 1995-02-08 | 北川工業株式会社 | Materials for housing electronic components |
| JPH0728148B2 (en) * | 1988-12-12 | 1995-03-29 | 北川工業株式会社 | Printed circuit board fixture |
-
1990
- 1990-02-13 JP JP2031826A patent/JPH03235398A/en active Pending
-
1991
- 1991-02-09 DE DE4104038A patent/DE4104038A1/en not_active Withdrawn
- 1991-02-09 DE DE9101511U patent/DE9101511U1/de not_active Expired - Lifetime
- 1991-02-12 GB GB9102919A patent/GB2240782B/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60104160A (en) * | 1983-11-11 | 1985-06-08 | Asahi Chem Ind Co Ltd | Thermoplastic resin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4104038A1 (en) | 1991-08-14 |
| DE9101511U1 (en) | 1991-06-06 |
| GB2240782A (en) | 1991-08-14 |
| GB2240782B (en) | 1993-01-06 |
| GB9102919D0 (en) | 1991-03-27 |
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