JPS5989272A - Engine hood made of plastic - Google Patents
Engine hood made of plasticInfo
- Publication number
- JPS5989272A JPS5989272A JP57195807A JP19580782A JPS5989272A JP S5989272 A JPS5989272 A JP S5989272A JP 57195807 A JP57195807 A JP 57195807A JP 19580782 A JP19580782 A JP 19580782A JP S5989272 A JPS5989272 A JP S5989272A
- Authority
- JP
- Japan
- Prior art keywords
- plastic
- engine hood
- conductive
- electromagnetic waves
- engine
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
- B62D29/043—Superstructures
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Superstructure Of Vehicle (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は自動車用のプラスチック製エンジンフード（ボ
ンネット）に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plastic engine hood for an automobile.
自動車のエンジンルーム内にエンジンの作動な制御する
電子制御装置、たとえば燃料噴射装置用の電子制御装置
が設けらねる場合は、この電子制御装置の誤動作な防止
するために、エンジンルーム内に外部からの電磁波が入
り込むのを防ぐ必要がある。If an electronic control device that controls the operation of the engine, such as an electronic control device for a fuel injection device, is not installed in the engine room of a car, it is necessary to install an electronic control device inside the engine room from outside to prevent malfunction of this electronic control device. It is necessary to prevent electromagnetic waves from entering.
従来の工／′）ンルームｄよ、柩ね導電体たる金属板で
覆わわているので、エンジンルーム内の電子制御装置は
外部からの電磁波から防謹された状態に置かわでいる。Since the conventional engine room is covered with a metal plate that is a conductor, the electronic control device in the engine room is protected from electromagnetic waves from the outside.
ところで、板金に比べて軽量であり、成形の自由度が高
く、かつ錆びｈいという利点をもつプラスチックでエン
ジンフードを作ると、プラスチック板は電磁波を通すの
で、エンジンルーム内の電子制御装置が電磁波の影響を
受けて誤動作な生じる虞ねがある。By the way, if the engine hood is made of plastic, which has the advantages of being lighter than sheet metal, has a higher degree of freedom in molding, and is resistant to rust, the electronic control equipment in the engine compartment will be exposed to electromagnetic waves, since the plastic plate will transmit electromagnetic waves. There is a risk that malfunctions may occur due to the influence of
本発明の目的は、電磁波に対する遮蔽手段を施したプラ
スチック製のエンジンフードを提供することにある。An object of the present invention is to provide a plastic engine hood provided with means for shielding against electromagnetic waves.
本発明の特許は、一定の周波数領域において、電磁波に
対する遮蔽効果が１８ ｄＢ以上、好ましくは２０ｄＢ
以上の導電処理をプラスチック製エンジンフードに施し
たことにある。The patent of the present invention claims that the shielding effect against electromagnetic waves in a certain frequency range is 18 dB or more, preferably 20 dB.
The reason is that the above conductive treatment has been applied to the plastic engine hood.
電磁波遮蔽のための、プラスチック製エンジンフードに
導電処理を施す手段としては、適当な導電材、たとえば
金属繊維や粉末あるいはカーボン繊維や粉末を熱硬化性
強化樹脂に混入してエンジンフードを成形する手段、エ
ンジンフード成形時に、同フードにサンドウィンチ状に
金属薄板、カーボン薄板または導電性網な封入する手段
、エンジンフードの少くとも一方の面に塗装６．スパン
タリング、蒸着、溶射等によって導電体薄層を設ける手
段、あるいはエンジンフードの内面に導電殴薄嘆を貼着
する手段がある。A method for applying conductive treatment to a plastic engine hood for shielding electromagnetic waves is to mold the engine hood by mixing a suitable conductive material, such as metal fibers, powders, or carbon fibers or powders into a thermosetting reinforced resin. 6. At the time of molding the engine hood, means for enclosing a thin metal plate, carbon thin plate or conductive net in the hood in a sand winch shape, and coating on at least one side of the engine hood. There are methods for providing a conductive thin layer by sputtering, vapor deposition, thermal spraying, etc., and methods for pasting a conductive layer on the inner surface of the engine hood.
”１．□ １図は、プラスチックに導電性繊維を混入し
た実施例を示しており、黄銅繊維Ｊ５％ を導電体とし
て７−ド１に混入した場合、？２図の曲線ａが示すよう
に、周波数領域］ト１． ＯＭ）Ｉｚにおいて、２０ｄ
Ｂ以上の遮蔽効果が得らねた。"1. □ Figure 1 shows an example in which conductive fibers are mixed into plastic. When brass fiber J5% is mixed into 7-dore 1 as a conductor, as shown by curve a in Figure 2, , frequency domain] 1. OM) In Iz, 20d
No better shielding effect than B was obtained.
之・２図中の曲線すは、導電体としてカーボン繊維ｌＯ
％ をプラスチックに混入した場合の遮蔽効果曲線を示
す。The curved line in Figure 2 shows carbon fiber lO as a conductor.
% is mixed into plastic.
才３図は、プラスチック製エンンノ７−ド１１の内面に
導電体薄層１１ａな形成した実施例を示しており、ぢ・
４図中の曲線ａは、導電体薄層として、厚さ２０μ〜１
００μ程度のアルミニウム箔をフード内面に施した場合
の遮蔽効果を示す。曲線すは、膜厚２５μ 、比抵抗５
×〕０ の銀粉式塗料を、同ｃは膜ＩＦＦ ５０μ
、比抵抗５×１０ のニッケル粉入塗料を、セして同
ｄは膜厚６０μ、比抵抗５×１０ のカーボン人塗料
を導電体薄層としてフード１］の内面に施した場合の遮
蔽効果をそねそれ示しており、その何わもが、周波数領
域１０〜１．０３ＭＨｚにおいて２０ｄＢ以上の遮蔽効
果を示している。なお、プラスチック製エンジンフード
１ｆ・の上下両面に導電体薄層（図示せず）を形成すわ
ば遮蔽効果な強化で診る。Figure 3 shows an example in which a thin conductive layer 11a is formed on the inner surface of a plastic enclosure 7-11.
Curve a in Figure 4 indicates a conductive thin layer with a thickness of 20μ to 1
This figure shows the shielding effect when aluminum foil of about 00 μm is applied to the inner surface of the hood. The curved line has a film thickness of 25μ and a specific resistance of 5.
×〕0 silver powder paint, same c as membrane IFF 50μ
, a nickel powder-containing paint with a specific resistance of 5 x 10 is applied to the inner surface of the hood 1 as a conductive thin layer, and d is a thin conductive layer of a carbon paint with a film thickness of 60 μ and a specific resistance of 5 x 10. All of them show a shielding effect of 20 dB or more in the frequency range of 10 to 1.03 MHz. In addition, a conductive thin layer (not shown) is formed on both the upper and lower surfaces of the plastic engine hood 1f to strengthen the shielding effect.
壜・５図は、プラスチック製エンジンフード１０１に金
属薄板１０１ａ を封入した実施例を示す。この金属
薄板を金網又は他の導電体たとえばカーボン板に代える
ことかできることは勿論である。Fig. 5 shows an embodiment in which a thin metal plate 101a is enclosed in a plastic engine hood 101. Of course, the thin metal plate can be replaced by a wire mesh or other conductive material, such as a carbon plate.
本発明によりば、成形の自由Ｋｌが高く、軽量や錆を生
じない、しかも電子制御装置を、その誤作動の要因とな
る電磁波から防護するエンジンフードを得ることができ
る。％に、外部からの電磁波をより確実１ｃ遮蔽する場
合には、この他の防映手段と合わせて利用することも容
易にできる。According to the present invention, it is possible to obtain an engine hood that has a high molding freedom Kl, is lightweight, does not cause rust, and protects an electronic control device from electromagnetic waves that cause malfunction thereof. %, when shielding electromagnetic waves from the outside more reliably, it can be easily used in conjunction with other anti-glare means.
なお、本発明は、必要があわば、トランクリントに適用
できる。Note that the present invention can be applied to trunk lint, if necessary.
】・１図は、本発明の一実施例を示すプラスチック製エ
ンジンフードの断面図、矛２図は矛１図の実施例におけ
ろ実験結果を示す線図、才３図は、本発明の別の実施例
を示す断面図、３Ｉ−４図は矛３図の実施例における実
験結果を示す線図、刀・５図は、本発明のさらに別の実
施例を示すプラスチック製エンジンフードの断面図であ
る。
１、 １１． １０１・・・プラスチック製エンンノ７
−ド、１１ａ・・・導電体薄層、］、０１ａ・・・金属
薄板）７図
（ｔｌＢし
■ｂ囲
（ｄＢ）
杏２０
同我軟（ｒ’ｌ／ｈ ）
う４又
囮λ委’ｉ （ＭＨｚ）】・Figure 1 is a cross-sectional view of a plastic engine hood showing an embodiment of the present invention, Figure 2 is a line diagram showing the experimental results for the embodiment of Figure 1, and Figure 3 is a cross-sectional view of a plastic engine hood according to an embodiment of the present invention. 3I-4 is a diagram showing the experimental results of the embodiment shown in FIG. 3. FIG. 5 is a cross-sectional view of a plastic engine hood showing yet another embodiment of the present invention. It is a diagram. 1, 11. 101...Plastic Enno 7
-do, 11a...conductor thin layer, ], 01a...metal thin plate) Figure 7 (tlB and ■b circumference (dB) 杏20 Doga soft (r'l/h) U4-shaped decoy λ committee 'i (MHz)
Claims (1)
ｄＢ以上の電磁波遮蔽効果を生じる導電処理を施したプ
ラスチック製エンジンフード。In the frequency range 1.0-1000 MHz, 20
A plastic engine hood with conductive treatment that produces an electromagnetic wave shielding effect of dB or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57195807A JPS5989272A (en) | 1982-11-08 | 1982-11-08 | Engine hood made of plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57195807A JPS5989272A (en) | 1982-11-08 | 1982-11-08 | Engine hood made of plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5989272A true JPS5989272A (en) | 1984-05-23 |
Family
ID=16347303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57195807A Pending JPS5989272A (en) | 1982-11-08 | 1982-11-08 | Engine hood made of plastic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5989272A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020056064A (en) * | 2000-12-29 | 2002-07-10 | 이계안 | Manufacturing of plastic hood assembly |
| JP2012159038A (en) * | 2011-02-01 | 2012-08-23 | Imagineering Inc | Shield structure of electromagnetic wave |
| WO2013003334A1 (en) * | 2011-06-27 | 2013-01-03 | Caterpillar Inc. | Engine enclosure door for a work vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128628B2 (en) * | 1972-04-12 | 1976-08-20 | ||
| JPS5622127B2 (en) * | 1978-08-21 | 1981-05-23 |
-
1982
- 1982-11-08 JP JP57195807A patent/JPS5989272A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128628B2 (en) * | 1972-04-12 | 1976-08-20 | ||
| JPS5622127B2 (en) * | 1978-08-21 | 1981-05-23 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020056064A (en) * | 2000-12-29 | 2002-07-10 | 이계안 | Manufacturing of plastic hood assembly |
| JP2012159038A (en) * | 2011-02-01 | 2012-08-23 | Imagineering Inc | Shield structure of electromagnetic wave |
| WO2013003334A1 (en) * | 2011-06-27 | 2013-01-03 | Caterpillar Inc. | Engine enclosure door for a work vehicle |
| US8893840B2 (en) | 2011-06-27 | 2014-11-25 | Caterpillar Inc. | Engine enclosure door |
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