JPH04114495A - Electronic equipment and manufacture thereof - Google Patents
Electronic equipment and manufacture thereofInfo
- Publication number
- JPH04114495A JPH04114495A JP2234278A JP23427890A JPH04114495A JP H04114495 A JPH04114495 A JP H04114495A JP 2234278 A JP2234278 A JP 2234278A JP 23427890 A JP23427890 A JP 23427890A JP H04114495 A JPH04114495 A JP H04114495A
- Authority
- JP
- Japan
- Prior art keywords
- light
- emitting body
- silicone rubber
- filled
- display window
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims description 7
- 239000011800 void material Substances 0.000 claims description 7
- 229920002379 silicone rubber Polymers 0.000 abstract description 23
- 239000004945 silicone rubber Substances 0.000 abstract description 21
- 230000003287 optical effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 229920002050 silicone resin Polymers 0.000 abstract description 2
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000004944 Liquid Silicone Rubber Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000004397 blinking Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Casings For Electric Apparatus (AREA)
- Transceivers (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、防爆或は防水、防湿の為内部に充填物を充填
する電子機器、及びその製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic device whose interior is filled with a filler for explosion-proofing, waterproofing, or moisture-proofing, and a manufacturing method thereof.
［従来の技術］
近年各種小型電子機器は、増々高機能化が図られ、マイ
クロコンピュータの採用と共に電気回路の高密度化、回
路の高電圧化かなされている。斯かる電子機器では、電
気回路で発生する火花、熱により引火性ガスを引火させ
る虞れかある。[Prior Art] In recent years, various small electronic devices have become increasingly sophisticated, and with the adoption of microcomputers, the density of electric circuits has been increased and the voltage of the circuits has been increased. In such electronic devices, there is a risk that flammable gas may be ignited by sparks and heat generated in the electric circuit.
特に小型電子機器が、携帯用無線機の様に、種々の環境
条件で使用されるもので、使用環境が引火性ガス雰囲気
、或は引火性カス雰囲気となる可能性のある場所となる
ものについては、該機器の回路が発生する火花、熱によ
り、周囲の引火性ガスに引火しない様な防爆構造である
ことが要求される。In particular, small electronic devices such as portable radios are used in various environmental conditions and are used in places where there is a possibility of flammable gas atmosphere or flammable dust atmosphere. The equipment is required to have an explosion-proof construction so that the sparks and heat generated by the equipment's circuits will not ignite surrounding flammable gases.
又、屋外で使用されるものでは防水構造であることか要
求される。Additionally, those used outdoors are required to have a waterproof structure.
従来の防爆、防水構造としては、ケースを完全な気密構
造とし、場合によってはケースの内圧を若干高くしてい
た。In conventional explosion-proof and waterproof structures, the case is completely airtight, and in some cases the internal pressure of the case is slightly increased.
然し乍ら、ケースを完全な気密構造とする防爆、防水構
造は、一般に大型で高級機器に採用される方法であり、
接合部、可動部のシール構造か複雑で高価なものとなっ
ており、携帯用無ａｉｍ等の様に小型、軽量化、而も低
コストが要求されるものには不向きである。又、ケース
内部の空間にエポキシ樹脂を充填し、防爆、防水構造と
することも考えられるが、エポキシ樹脂等の合成樹脂は
硬化時に縮小する性質かあり、この為斯かる方法を精密
な電子機器に用いた場合には配線を切断することか考え
られ、製品の信頼性を考慮すると用いることかできない
。However, explosion-proof and waterproof construction, where the case is completely airtight, is generally used for large, high-end equipment.
The seal structure of the joints and movable parts is complicated and expensive, making it unsuitable for devices that require small size, light weight, and low cost, such as portable aimless devices. It is also possible to fill the space inside the case with epoxy resin to make it explosion-proof and waterproof, but synthetic resins such as epoxy resin have the property of shrinking when hardened, so this method is not suitable for precision electronic equipment. If used for this purpose, it would be considered to cut the wiring, and considering the reliability of the product, it cannot be used.
そこで、本出願人は、２液温合固化型の低粘度シリコン
ゴムを電子機器内部の空隙に充填し、簡便に而も電気回
路に損傷を与えることなく、高信頼度のシール性能を得
られる電子機器を提案した。Therefore, the present applicant has filled the voids inside electronic devices with a two-component thermal solidification type low-viscosity silicone rubber, thereby achieving highly reliable sealing performance easily and without damaging the electrical circuits. Suggested electronic equipment.
［発明が解決しようとする課題］
上記電子機器は、電子機器内部の狭小な空隙迄完全にシ
リコンゴムを浸透させるので、光表示部の透光部迄、充
填物であるシリコンゴムが覆ってしまうことになり、光
表示部の機能を損うことになる。[Problems to be Solved by the Invention] In the above-mentioned electronic device, the silicone rubber completely penetrates into the narrow gap inside the electronic device, so that the silicone rubber filling even covers the transparent part of the light display section. This will impair the function of the optical display section.
本発明は、上記したシリコンゴム充填構造の電子機器に
於いて、光表示部の機能か損われることかない電子機器
及びその製造方法を提供しようとするものである。The present invention aims to provide an electronic device having the above-mentioned silicone rubber filling structure in which the function of the optical display section is not impaired, and a method for manufacturing the same.
［課題を解決する為の手段］
本発明は、内部の空隙に充填物か充填される電子機器に
於いて、少なくとも発光体と透明表示窓との間には、透
明樹脂を充填したことを特徴とするものである。[Means for Solving the Problems] The present invention is characterized in that, in an electronic device in which internal voids are filled with a filler, a transparent resin is filled at least between the light emitter and the transparent display window. That is.
［作 用］
発光体と透明表示窓との間に透明樹脂が充填されている
ので、内部空隙に充填物を充填しても、発光体と透明表
示窓との間には光路が確保されており、充填物により発
光体による点滅表示機能は損われることはない。[Function] Since the transparent resin is filled between the light emitter and the transparent display window, an optical path is maintained between the light emitter and the transparent display window even if the internal void is filled with filler. Therefore, the blinking display function of the light emitter is not impaired by the filling.
［実 施 例コ
以下、図面を参照しつつ、本発明の一実施例を説明する
。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
第２図〜第６図は、本発明を携帯用小型無線機に実施し
た場合を示している。2 to 6 show the case where the present invention is implemented in a small portable radio device.
この携帯用小型無線機のケース１は表パネル２、裏パネ
ル３の２分割構成であり、両パネル２．３にはそれぞれ
、電子部品が実装された配線基板４．５が取付けられて
いる。A case 1 of this portable small radio device has a two-part structure including a front panel 2 and a back panel 3, and each of both panels 2.3 has a wiring board 4.5 on which electronic components are mounted.
表パネル２側の配線基板４には、ブツシュスイッチユニ
ット６が取付けられ、該ブツシュスイッチユニット６の
各ブツシュ部７は前記表パネル２を貫通して突出してい
る。又、裏パネル３側の配線基板５にはシールドカバー
８が固着されている。A bushing switch unit 6 is attached to the wiring board 4 on the front panel 2 side, and each bushing portion 7 of the bushing switch unit 6 penetrates through the front panel 2 and projects. Further, a shield cover 8 is fixed to the wiring board 5 on the back panel 3 side.
ケース１の上面には、アンテナ９、押釦スイッチ１０、
コネクタ１１が取付けられ、該コネクタ１１は、接続ユ
ニット１２を介して表側配線基板４に接続されている。On the top surface of the case 1, an antenna 9, a push button switch 10,
A connector 11 is attached, and the connector 11 is connected to the front wiring board 4 via a connection unit 12.
又、ケース１の上面には光表示部１３、更に側面には、
スライドスイッチ１４が設けられる。In addition, the light display section 13 is on the top surface of the case 1, and furthermore, on the side surface,
A slide switch 14 is provided.
本実施例の小型無線機では、防爆対策としてケース１内
の空間、間隙に液状シリコンゴム１５．１６，１７．１
８を充填し、その後固化させる。In the small radio device of this embodiment, liquid silicone rubber 15.16, 17.1 is filled in the spaces and gaps inside the case 1 as an explosion-proof measure.
8 and then solidified.
斯かる充填に用いられるシリコンゴム１５，１６゜１７
．１８は、固化時に体積変化のない２液温合固化型のも
のを使用し、且狭小な隙間にも充分浸透してゆく様、低
粘度（例えば２０ ｐｏｉｓｅ）のものが採用される。Silicone rubber used for such filling15,16゜17
．． For No. 18, a two-component thermal solidification type that does not change in volume during solidification is used, and a low viscosity (for example, 20 poise) is used so that it can sufficiently penetrate into narrow gaps.
又、充填時に空気が、封込められにくい様、又空気が封
込められた場合にも逃げ易い様、時間を掛けて充填し、
又充分な固化時間を与える。In addition, we take time to fill the product so that it is difficult for air to be trapped, and even if air is trapped, it is easy to escape.
It also provides sufficient solidification time.
ここで、充填の方法として好ましくは、ノズル等を用い
注入時に圧力を掛けることなく重力の自然落下によるも
のとする。自然落下による注入とすれば、注入された液
状シリコンゴムが浸透して行く速度と注入速度とがマツ
チングがとれ、完全に密な状態の充填が行える。Preferably, the filling method is to use a nozzle or the like and allow gravity to naturally fall without applying pressure during injection. If the injection is performed by gravity, the rate at which the injected liquid silicone rubber permeates and the injection rate are matched, and a completely dense filling can be achieved.
而して、シリコンゴムが固化した状態では、ケース１内
の空隙はシリコンゴムによって完全に充填され、外気と
電気回路の火花発生箇所、発熱部とが遮断され、外気が
引火性ガス雰囲気であっても、電気回路に原因して引火
することはない。When the silicone rubber is solidified, the void inside the case 1 is completely filled with the silicone rubber, and the outside air is cut off from the spark generation point and the heat generating part of the electric circuit, and the outside air is a flammable gas atmosphere. However, the electrical circuit will not cause a fire.
尚、発熱部の熱はシリコンゴムにより拡散されるか、熱
拡散をより効果的に行う為、熱伝導性に優れた酸化アル
ミナの粉等をシリコンゴムに混合してもよい。Note that the heat from the heat generating portion is diffused by the silicone rubber, or in order to more effectively diffuse the heat, alumina oxide powder or the like having excellent thermal conductivity may be mixed with the silicone rubber.
前記した様に２液温合型のシリコンゴムは体積変化がな
いので、固化した状態で局部的な歪、該歪による残留応
力が発生することがなく、従って、微細な配線パターン
、リード線等を切断することがない。更に、シリコンゴ
ムは固化状態で高弾性であるので、例え歪を生じてもシ
リコンゴム自体の変形により吸収し、配線パターン、リ
ード線等の切断に到ることはない。As mentioned above, since the two-component heating type silicone rubber does not change in volume, it does not generate local distortion or residual stress due to the distortion in the solidified state, so it can be used for fine wiring patterns, lead wires, etc. Never cut. Furthermore, since silicone rubber has high elasticity in a solidified state, even if distortion occurs, it is absorbed by the deformation of the silicone rubber itself, and wiring patterns, lead wires, etc. will not be cut.
次に、光表示部について第１図により説明する。Next, the optical display section will be explained with reference to FIG.
表パネル２の上面に孔を設け、鎖孔に樹脂製の透明表示
窓２０を嵌着する。前記配線基板４の該透明表示窓２０
に対峙する位置に発光ダイオード等の発光体２１を設け
る。A hole is provided on the upper surface of the front panel 2, and a transparent display window 20 made of resin is fitted into the chain hole. The transparent display window 20 of the wiring board 4
A light emitting body 21 such as a light emitting diode is provided at a position facing the.
電子機器内部にシリコンゴムを充填する場合以下の如く
行う。When filling the inside of an electronic device with silicone rubber, proceed as follows.
先ず所要の粘度を有し、好ましくは固化可能な透明樹脂
、例えばシリコン樹脂２２を、前記発光体２１と透明表
示窓２０との間、及び発光体２１の周りに盛付ける。First, a transparent resin having a required viscosity and preferably solidizable, such as silicone resin 22, is placed between the light emitter 21 and the transparent display window 20 and around the light emitter 21.
次に、前述した櫟にシリコンゴムを電子機器内部の空隙
に充填する。このシリコンゴム充填に於いて、発光体２
１と透明表示窓２０との間には既に透明樹脂２２か充填
されており、発光体２１から透明表示窓２０に至る光路
は既に確保されているので、シリコンゴム充填によって
表示部１３の機能が阻害されることがない。Next, silicone rubber is filled into the void inside the electronic device using the above-mentioned cage. In this silicone rubber filling, the light emitter 2
1 and the transparent display window 20, and the optical path from the light emitter 21 to the transparent display window 20 has already been secured, so the function of the display section 13 can be improved by filling with silicone rubber. not be hindered.
而して、該発光体２１からの光は、前記透明樹脂２２、
前記透明表示窓２０を透過して、発光体２１の点灯を知
らせる。The light from the light emitting body 21 is transmitted through the transparent resin 22,
The light passes through the transparent display window 20 and indicates that the light emitter 21 is lit.
尚、上記実施例では防爆構造の小型携帯無線機について
説明したが、防水構造の電子機器にも実施可能であるこ
とは言う迄もない。In the above embodiment, a small portable wireless device with an explosion-proof structure has been described, but it goes without saying that the present invention can also be applied to electronic equipment with a waterproof structure.
又、シリコンゴム以外の充填物であっても実施可能なこ
とも勿論である。Of course, it is also possible to use fillers other than silicone rubber.
［発明の効果］
以上述べた如く本発明によれば、シリコンゴムを電子機
器内部の空隙に充填する構造に於いて、発光部の機能を
損うことがないという優れた効果を発揮する。[Effects of the Invention] As described above, according to the present invention, in a structure in which the void inside an electronic device is filled with silicone rubber, an excellent effect is exhibited in that the function of the light emitting part is not impaired.
第１図は本発明の一実施例を示すものであり、第４図の
Ａ−Ａ矢視図、第２図は本発明が実施された携帯用小型
無線機の正面図、第３図は同前左側面図、第４図は同前
平面図、第５図は同前底面図、第６図は側断面図を示す
。
１はケース、２は表パネル、２０はアクリルレンズ、２
１は発光体、２２は透明樹脂を示す。FIG. 1 shows an embodiment of the present invention; FIG. 4 is a view taken along the line A-A; FIG. 2 is a front view of a small portable radio device in which the present invention is implemented; FIG. FIG. 4 is a front left side view, FIG. 5 is a front bottom view, and FIG. 6 is a side sectional view. 1 is the case, 2 is the front panel, 20 is the acrylic lens, 2
Reference numeral 1 indicates a light emitting body, and reference numeral 22 indicates a transparent resin.
Claims (1)
、少なくとも発光体と透明表示窓との間には、透明樹脂
を充填したことを特徴とする電子機器。 ２）内部の空隙に充填物を充填する電子機器の製造方法
に於いて、先ず発光体と透明表示窓との間に透明樹脂を
盛付充填し、その後充填物を電子機器の空隙に充填する
ことを特徴とする電子機器の製造方法。[Scope of Claims] 1) An electronic device in which an internal void is filled with a filler, characterized in that at least a space between a light emitting body and a transparent display window is filled with a transparent resin. 2) In a method of manufacturing an electronic device in which the internal void is filled with a filler, first a transparent resin is placed and filled between the light emitting body and the transparent display window, and then the filler is filled into the void of the electronic device. A method of manufacturing an electronic device, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2234278A JPH04114495A (en) | 1990-09-04 | 1990-09-04 | Electronic equipment and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2234278A JPH04114495A (en) | 1990-09-04 | 1990-09-04 | Electronic equipment and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04114495A true JPH04114495A (en) | 1992-04-15 |
Family
ID=16968470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2234278A Pending JPH04114495A (en) | 1990-09-04 | 1990-09-04 | Electronic equipment and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04114495A (en) |
-
1990
- 1990-09-04 JP JP2234278A patent/JPH04114495A/en active Pending
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