JPH0670870B2 - Aluminum plate material for floppy disk drive case - Google Patents
Aluminum plate material for floppy disk drive caseInfo
- Publication number
- JPH0670870B2 JPH0670870B2 JP2416278A JP41627890A JPH0670870B2 JP H0670870 B2 JPH0670870 B2 JP H0670870B2 JP 2416278 A JP2416278 A JP 2416278A JP 41627890 A JP41627890 A JP 41627890A JP H0670870 B2 JPH0670870 B2 JP H0670870B2
- Authority
- JP
- Japan
- Prior art keywords
- floppy disk
- disk drive
- plate material
- drive case
- aluminum plate
- 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
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はフロッピーディスクドラ
イブケース用アルミニウム板材に関し、更に詳しくは、
表面の潤滑性が優れ、成形後の外観が良く、軽量で、し
かも電磁波シールド特性に優れたフロッピーディスクド
ライブケース用アルミニウム板材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum plate material for a floppy disk drive case, more specifically,
The present invention relates to an aluminum plate material for a floppy disk drive case, which has excellent surface lubricity, has a good appearance after molding, is lightweight, and has excellent electromagnetic wave shielding properties.
【０００２】[0002]
【従来の技術及び解決しようとする課題】パソコン或い
はワープロのメモリーにはフロッピーティスクが用いら
れるが、フロッピーディスクドライブは、ＣＲＴに近く
設置されるため、ＣＲＴから発生する電磁波ノイズがフ
ロッピーディスクに影響を及ぼして、メモリーに支障が
出る場合がある。このため、従来は鉄製のフロッピーデ
ィスクドライブケースが用いられることが多かった。2. Description of the Related Art A floppy disk is used as a memory of a personal computer or a word processor, but since a floppy disk drive is installed near a CRT, electromagnetic wave noise generated from the CRT affects the floppy disk. May affect the memory. For this reason, iron floppy disk drive cases have often been used conventionally.
【０００３】しかし、従来の鉄製のフロッピーディスク
ドライブケースは、ＣＲＴからの電磁波のシールド特性
は良好であるものの、成形時に傷が入り易く、成形後の
取り扱い時に指紋が付き易い。更には、近年多く用いら
れるラップトップタイプのパソコンやノートワープロな
どのように持ち運びされるものには、鉄製のケースは重
量が大きく不適当である。However, although the conventional iron-made floppy disk drive case has a good shielding property against electromagnetic waves from the CRT, it is easily scratched during molding, and fingerprints are apt to occur during handling after molding. Further, the iron case is heavy and unsuitable for portable devices such as laptop type personal computers and notebook word processors which have been widely used in recent years.
【０００４】本発明は、上記従来技術の欠点を解消し
て、軽量で成形性がよく、かつ電磁波のシールド特性が
良好なフロッピーディスクドライブケース用材料を提供
することを目的とするものである。An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a material for a floppy disk drive case which is lightweight, has good moldability, and has good electromagnetic wave shielding properties.
【０００５】[0005]
【課題を解決するための手段】本発明者は、前記課題を
解決するため、材料としてアルミニウム板材を効果的に
使用し得る方策について鋭意研究を重ね、ここに本発明
をなしたものである。In order to solve the above-mentioned problems, the present inventor has conducted earnest research on a method of effectively using an aluminum plate as a material, and has made the present invention here.
【０００６】すなわち、本発明は、アルミニウム合金板
材の片面にエポキシ系若しくはアクリル系又は塩ビ系の
樹脂がコーティングされており、該樹脂コーティング皮
膜は、その厚さが０.１〜５μmで、潤滑剤を０.２〜５
％含有し、摩擦係数が０.５０以下のものであることを
特徴とするフロッピーディスクドライブケース用アルミ
ニウム板材を要旨とするものである。以下に本発明を更
に詳細に説明する。That is, according to the present invention, one surface of an aluminum alloy plate material is coated with an epoxy resin, an acrylic resin, or a vinyl chloride resin, and the resin coating film has a thickness of 0.1 to 5 μm and a lubricant. 0.2 to 5
%, And has a friction coefficient of 0.50 or less, and an aluminum plate material for a floppy disk drive case. The present invention will be described in more detail below.
【０００７】[0007]
【作用】本発明のフロッピーディスクドライブケース用
アルミニウム板材は、アルミニウム合金板材の片面に特
定の材質及び性状の樹脂コーティングを塗装したもので
ある。このような樹脂としてはエポキシ系、アクリル系
又は塩ビ系が用いられるが、その樹脂による片面コーテ
ィングはケース外面に行なわれる。これは、ケース成形
時に片面側の潤滑が重要なためである。また、取り扱い
の時の指紋も外面側に付き易いものであるので、外面側
のコーティングが有効である。しかも、内面側はアース
をとりやすくするべく外面側に片面コーティングするの
がよい。The aluminum plate for a floppy disk drive case of the present invention is an aluminum alloy plate coated with a resin coating of a specific material and property on one side. As such a resin, an epoxy type, an acrylic type or a vinyl chloride type is used, and one side coating with the resin is performed on the outer surface of the case. This is because it is important to lubricate one side when molding the case. Further, since fingerprints are easily attached to the outer surface during handling, coating on the outer surface is effective. Moreover, it is preferable that the inner surface is coated on one side to facilitate grounding.
【０００８】樹脂コーティングの皮膜厚さは、０.１μm
未満では潤滑効果が不十分で傷付き易く、また取り扱い
時に指紋等の汚れが付き易い。しかし、５μmより厚く
してもその効果が飽和し経済的に無駄である。したがっ
て、皮膜厚さは０.１〜５μmとする。The film thickness of the resin coating is 0.1 μm
If it is less than the above range, the lubrication effect is insufficient and scratches are likely to occur, and stains such as fingerprints are likely to occur during handling. However, even if it is thicker than 5 μm, its effect is saturated and it is economically useless. Therefore, the film thickness is set to 0.1 to 5 μm.
【０００９】また、樹脂コーティングの皮膜の摩擦係数
は０.５０以下であることが必要である。摩擦係数が０.
５０を超えると、潤滑性が不十分で成形時に傷が発生し
易い。皮膜の摩擦係数を０.５０以下とするには、ポリ
エチレン、鯨ロウ、ラノリン、フッソ化合物などの潤滑
剤を添加して調製するが、該樹脂中に０.２〜５％添加
するのが効果的である。The coefficient of friction of the resin coating film must be 0.50 or less. Coefficient of friction is 0.
When it exceeds 50, the lubricity is insufficient and scratches are likely to occur during molding. In order to reduce the friction coefficient of the coating to 0.50 or less, a lubricant such as polyethylene, spermaceti, lanolin, or a fluorine compound is added and prepared, but it is effective to add 0.2 to 5% to the resin. Target.
【００１０】なお、アルミニウム合金としては、その成
分組成は特に制限されるものではないが、Ｍg系、Ｍn系
又はＭg−Ｍn系のものが望ましい。特に、１〜５wt％の
Ｍg、０.５〜２wt％のＭnの少なくとも１種を含有する
成分のものが好ましい。ここで、Ｍgが１％未満では強
度が低く、ケースがへこみ易くなるので板厚を厚くする
必要があり、重量が大きくなる。一方、Ｍgが５％を超
えると成形性が低下しケース加工に不適当となる。ま
た、Ｍnが０.５％未満では強度が低くケースがへこみや
すくなるので板厚を厚くする必要があり、重量が大きく
なる。一方、Ｍnが２％を超えると粗大な金属間化合物
が生成し、加工性が低下する。The composition of the aluminum alloy is not particularly limited, but Mg-based, Mn-based or Mg-Mn-based alloys are preferable. Particularly, a component containing at least one of Mg of 1 to 5 wt% and Mn of 0.5 to 2 wt% is preferable. Here, if the Mg content is less than 1%, the strength is low and the case is likely to be dented, so that it is necessary to increase the plate thickness and the weight is increased. On the other hand, when the Mg content exceeds 5%, the formability is lowered and it becomes unsuitable for case processing. On the other hand, if Mn is less than 0.5%, the strength is low and the case is likely to be dented, so that it is necessary to increase the plate thickness and the weight is increased. On the other hand, when Mn exceeds 2%, a coarse intermetallic compound is formed, and the workability is deteriorated.
【００１１】次に本発明の実施例を示す。Next, examples of the present invention will be described.
【表１】 に示す化学成分を有するアルミニウム合金を均熱、熱
延、焼鈍、冷間圧延して板厚０.３５mmとした。この板
材の片面に表１に示す樹脂皮膜をロールコートで塗布し
た。ケース成形としては９０゜曲げを行なった。また摩
擦係数はバウデン試験機で荷重１００gで測定した。[Table 1] An aluminum alloy having the chemical composition shown in Table 1 was soaked, hot rolled, annealed, and cold rolled to a plate thickness of 0.35 mm. The resin film shown in Table 1 was applied to one surface of this plate material by roll coating. The case was bent at 90 °. The friction coefficient was measured with a Bowden tester under a load of 100 g.
【００１２】得られたケースについて変形性、傷、指紋
残り、電磁波シールド性について調べた結果をThe obtained case was examined for deformability, scratches, fingerprint residue, and electromagnetic wave shielding properties.
【表２】 に示す。表２より明らかなように、本発明例はいずれ
も、所要の強度を有し、電磁波のシールド特性が良好
で、成形性がよく、指紋残り等のない高品質である。軽
量であることは云うまでもない。[Table 2] Shown in. As is clear from Table 2, all of the examples of the present invention have required strength, good electromagnetic wave shielding properties, good moldability, and high quality without fingerprint residue. It goes without saying that it is lightweight.
【００１３】[0013]
【発明の効果】以上説明したように、本発明によれば、
軽量で、強度、成形性等々が優れ、しかも電磁波のシー
ルド特性が良好であり、高品質のフロッピーディスクド
ライブケース用材料を提供できる。As described above, according to the present invention,
It is lightweight, has excellent strength, moldability, etc., and also has good electromagnetic wave shielding properties, and can provide a high-quality material for a floppy disk drive case.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０５Ｋ 9/00 Ｗ 7128−4Ｅ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location H05K 9/00 W 7128-4E
Claims (2)
系若しくはアクリル系又は塩ビ系の樹脂がコーティング
されており、該樹脂コーティング皮膜は、その厚さが
０.１〜５μmで、潤滑剤を０.２〜５％含有し、摩擦係
数が０.５０以下のものであることを特徴とするフロッ
ピーディスクドライブケース用アルミニウム板材。1. An aluminum alloy plate material is coated on one side with an epoxy-based, acrylic-based, or vinyl chloride-based resin, and the resin coating film has a thickness of 0.1 to 5 μm and a lubricant of 0.2. An aluminum plate material for a floppy disk drive case, characterized in that the content is up to 5% and the friction coefficient is 0.50 or less.
及び０.５〜２wt％のＭnの少なくとも１種を含有してい
るアルミニウム合金である請求項１に記載のアルミニウ
ム板材。2. The aluminum material is 1-5 wt% Mg
And the aluminum plate material according to claim 1, which is an aluminum alloy containing at least one of Mn of 0.5 to 2 wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416278A JPH0670870B2 (en) | 1990-12-28 | 1990-12-28 | Aluminum plate material for floppy disk drive case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416278A JPH0670870B2 (en) | 1990-12-28 | 1990-12-28 | Aluminum plate material for floppy disk drive case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04330683A JPH04330683A (en) | 1992-11-18 |
| JPH0670870B2 true JPH0670870B2 (en) | 1994-09-07 |
Family
ID=18524509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2416278A Expired - Lifetime JPH0670870B2 (en) | 1990-12-28 | 1990-12-28 | Aluminum plate material for floppy disk drive case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0670870B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2925891B2 (en) * | 1993-04-14 | 1999-07-28 | 住友軽金属工業株式会社 | Aluminum alloy material for shutter of recording medium cassette, method of manufacturing the same, and aluminum alloy shutter using the same |
| JP3133719B2 (en) * | 1997-02-03 | 2001-02-13 | 古河電気工業株式会社 | Resin-coated aluminum alloy sheet |
| KR100544429B1 (en) * | 2001-04-09 | 2006-01-24 | 주식회사 포스코 | Electromagnetic shielding resin coating material and low carbon resin coating steel plate |
| KR100544470B1 (en) * | 2001-12-03 | 2006-01-24 | 주식회사 포스코 | Resin coating liquid composition excellent in electromagnetic shielding performance and a resin coated steel sheet manufacturing method using the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5554364A (en) * | 1978-10-17 | 1980-04-21 | Toyo Alum Kk | Aqueous resin-wax composition for forming and corrosion-protection of aluminum fin material |
| JPS6094466A (en) * | 1983-10-28 | 1985-05-27 | Nippon Steel Corp | Coating material composition for precoated steel plate |
| JPS60131715A (en) * | 1983-12-20 | 1985-07-13 | 住友ベークライト株式会社 | Method of producing molded article for electromagnetic shield |
| JPS6182992A (en) * | 1984-09-28 | 1986-04-26 | Furukawa Alum Co Ltd | Al alloy brazing sheet |
| JPS61110547A (en) * | 1984-11-05 | 1986-05-28 | 日立電線株式会社 | Electromagnetic wave shielding material |
| JPH01122432A (en) * | 1987-11-06 | 1989-05-15 | Sky Alum Co Ltd | Highly-slidable precoated metal sheet |
| JPH01208697A (en) * | 1988-02-15 | 1989-08-22 | Kobe Steel Ltd | Surface treated aluminum thin sheet for plate fin of heat exchanger |
| JPH0243040A (en) * | 1988-05-31 | 1990-02-13 | Kawasaki Steel Corp | Lubricating resin treated steel plate excellent in corrosion resistance |
| JPH0832343B2 (en) * | 1988-06-30 | 1996-03-29 | 東洋製罐株式会社 | Method for manufacturing draw-formed container |
| JP2786451B2 (en) * | 1988-07-12 | 1998-08-13 | アイシン・エィ・ダブリュ株式会社 | Hydraulic control unit for automatic transmission |
-
1990
- 1990-12-28 JP JP2416278A patent/JPH0670870B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04330683A (en) | 1992-11-18 |
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