JP2006203150A - Electromagnetic shield structure - Google Patents

Electromagnetic shield structure Download PDF

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JP2006203150A
JP2006203150A JP2005056919A JP2005056919A JP2006203150A JP 2006203150 A JP2006203150 A JP 2006203150A JP 2005056919 A JP2005056919 A JP 2005056919A JP 2005056919 A JP2005056919 A JP 2005056919A JP 2006203150 A JP2006203150 A JP 2006203150A
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surface portion
electromagnetic shield
shield structure
gasket
members
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JP4420227B2 (en
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Shuzo Yamada
周三 山田
Nobuyuki Shintaku
信行 新宅
Katsuya Tajiri
勝也 田尻
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Nok Corp
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Nok Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic shield structure using general gaskets without adding changes to the quality of material and shapes, and fully displaying electromagnetic wave shielding effects. <P>SOLUTION: An electromagnetic shield structure has a sealing part 3 sealing the space between two members 1 and 2 that are opposed to each other by a gasket 4 comprising an elastic body, and forms an electromagnetic shield to avoid that electromagnetic waves are passed through the space between the two members 1 and 2. There is provided a conductive part 5 conducting electricity between the two members 1 and 2 outside or inside the sealing part 3 side by side with the sealing part 3. In this conductive part 5, a contact part 6 provided in either one member of the two members 1 and 2 is contacted with the other member. The sealing part 3 by the gasket 4 may be a lateral seal structure. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、電磁波の通過を遮るために用いられる電磁シールド構造に関するものである。本発明の電磁シールド構造は例えば、ハードディスク装置(HDD)等の記憶装置、CDもしくはDVD等のディスクプレイヤまたは携帯電話などに用いられる。   The present invention relates to an electromagnetic shield structure used for blocking the passage of electromagnetic waves. The electromagnetic shield structure of the present invention is used in, for example, a storage device such as a hard disk device (HDD), a disk player such as a CD or DVD, or a mobile phone.

例えば、HDD等の記憶装置においては近年、電磁波シールド(EMIシールド)に対する関心が急速に高まっており、その要因としては、以下の3点が考えられる。
(1)HDD等の記憶装置に他の機械の電磁波が侵入することで、装置の動作に影響を受けることがある。
(2)HDD等の記憶装置から漏れる電磁波から情報が漏洩し、盗用される可能性がある。
(3)HDD等の記憶装置から電磁波が漏れることで、他の機械の動作に影響を及ぼすことがある。
For example, in storage devices such as HDDs, in recent years, interest in electromagnetic wave shielding (EMI shielding) has rapidly increased, and the following three points can be considered as factors.
(1) When electromagnetic waves from other machines enter a storage device such as an HDD, the operation of the device may be affected.
(2) Information may be leaked from electromagnetic waves leaking from a storage device such as an HDD, which may be stolen.
(3) The leakage of electromagnetic waves from a storage device such as an HDD may affect the operation of other machines.

図12に示すように、記憶装置の筐体は、その一方の蓋体をなすトップカバー51と、その他方の箱体をなすベース52の組み合わせから成っており、両部品51,52の間には、気密性を保つためにガスケット53が介装されている。ガスケット53としてはゴムや樹脂等の弾性体が使われることが多いが、これらの材質は体積固有抵抗が高く、電磁波が素通りしてしまう。   As shown in FIG. 12, the housing of the storage device includes a combination of a top cover 51 that forms one lid and a base 52 that forms the other box. In order to maintain airtightness, a gasket 53 is interposed. As the gasket 53, an elastic body such as rubber or resin is often used, but these materials have high volume resistivity, and electromagnetic waves pass through.

このため、電磁波の通過を遮断すべく従来、以下に列記する技術が開発されているが、それぞれ付記するような欠点を有している。   For this reason, techniques listed below have been developed to block the passage of electromagnetic waves, but have the following drawbacks.

従来技術1)ガスケット53に導電性フィラー54(図7参照)等を添加する(特許文献1参照)。
欠点a)製作コストが高くなる。
b)フィラーを均一に分散するのが難しい(部位によって効果に差が出る)。
c)ガスケットの硬度が高くなる。
d)金属コンタミが発生する。
Prior Art 1) A conductive filler 54 (see FIG. 7) or the like is added to the gasket 53 (see Patent Document 1).
Disadvantages a) Production costs are high.
b) It is difficult to uniformly disperse the filler (the effect varies depending on the part).
c) The hardness of the gasket increases.
d) Metal contamination occurs.

従来技術2)ガスケットの表面を金属膜で覆う(特許文献2参照)。
欠点a)コストが高くなる。
b)膜厚にバラツキが発生する(部位によって効果に差が出る)。
c)ガスケットの硬度が高くなり、圧縮時の膜の耐久性にも問題がある。
d)コンタミが発生する。
Prior art 2) The surface of the gasket is covered with a metal film (see Patent Document 2).
Disadvantage a) Cost increases.
b) Variation in film thickness occurs (the effect varies depending on the part).
c) The hardness of the gasket is increased, and there is a problem with the durability of the membrane during compression.
d) Contamination occurs.

従来技術3)ガスケットに代えてカバーに突起形状を作成し、圧縮する(特許文献3参照)。
欠点a)リーク性(気密性)に問題が生じることがある。
b)金属コンタミが発生することがある。
Prior art 3) A protrusion shape is created on the cover instead of the gasket and compressed (see Patent Document 3).
Disadvantages a) There may be a problem with leakage (airtightness).
b) Metal contamination may occur.

従来技術4)アルミ等のテープ材を用いてカバーとベースを一体化する。
a)コストが高い。
b)リワーク性に難がある。
Prior art 4) The cover and the base are integrated using a tape material such as aluminum.
a) Cost is high.
b) There is difficulty in reworkability.

また、電磁シールド効果を向上させるべく、漏洩距離を延ばす形状やガスケットを密閉状態にして圧縮する方法があるが、ベース側の加工やスペースの問題がある。   Moreover, in order to improve the electromagnetic shielding effect, there is a method of extending the leakage distance and a method of compressing the gasket in a sealed state, but there are problems in processing and space on the base side.

特開平5−7177号公報JP-A-5-7177 特開2000−351955号公報JP 2000-351955 A 特開2002−353651号公報JP 2002-353651 A

本発明は以上の点に鑑みて、一般のガスケットを材質や形状に変更を加えることなくそのまま用いることができ、しかも電磁波シールド効果を十分に発揮することが可能な電磁シールド構造を提供することを目的とする。   In view of the above, the present invention provides an electromagnetic shield structure that can be used as it is without changing the material and shape of a general gasket and that can sufficiently exhibit the electromagnetic shielding effect. Objective.

またこれに加えて、カバーやベース等の部材に締結時の反り現象が発生する場合であっても、電磁波シールド効果を損なうことがない電磁シールド構造を提供することを目的とする。   In addition, an object of the present invention is to provide an electromagnetic shielding structure that does not impair the electromagnetic shielding effect even when a warping phenomenon occurs at the time of fastening on a member such as a cover or a base.

上記目的を達成するため、本発明の請求項1による電磁シールド構造は、互いに対向する二部材間を弾性体よりなるガスケットにてシールするシール部を有し、かつ前記二部材間を電磁波が通過しないよう電磁シールドをなす構造であって、前記シール部と並列して前記シール部の外側または内側に前記二部材間を導電させる導電部を有し、前記導電部は、前記二部材のうちの何れか一方の部材に設けた接触部を他方の部材に接触させるものであることを特徴とする。   In order to achieve the above object, an electromagnetic shield structure according to claim 1 of the present invention has a seal portion that seals between two members facing each other with a gasket made of an elastic body, and electromagnetic waves pass between the two members. An electromagnetic shield so as not to have a conductive portion that conducts between the two members in parallel to the seal portion on the outside or inside of the seal portion, and the conductive portion is one of the two members The contact part provided in any one member is made to contact the other member, It is characterized by the above-mentioned.

また、本発明の請求項2による電磁シールド構造は、上記した請求項1の電磁シールド構造において、接触部は、他方の部材へ向けて一方の部材に設けた帯状の突起として設けられていることを特徴とする。   The electromagnetic shield structure according to claim 2 of the present invention is the electromagnetic shield structure according to claim 1 described above, wherein the contact portion is provided as a band-shaped protrusion provided on one member toward the other member. It is characterized by.

また、本発明の請求項3による電磁シールド構造は、上記した請求項1または2の電磁シールド構造において、ネジ等の固定手段を用いて二部材を締結したときに生じる部材の反り現象に対応して、接触部は事前に反りを入れた形状とし、締結時に部材締め付け力が作用すると平坦状となって相手部材に全面接触する形状に形成されていることを特徴とする。   Further, the electromagnetic shield structure according to claim 3 of the present invention corresponds to the warp phenomenon of the member that occurs when the two members are fastened by using fixing means such as screws in the electromagnetic shield structure of claim 1 or 2 described above. The contact portion is warped in advance, and is formed into a flat shape when a member tightening force is applied during fastening, so as to be in contact with the entire surface of the mating member.

また、本発明の請求項4による電磁シールド構造は、上記した請求項1、2または3の電磁シールド構造において、二部材は、HDD等の記憶装置の筐体の一方をなすトップカバーと、他方をなすベースとの組み合わせよりなり、前記筐体の周縁部にシール部が設けられ、その外周側または内周側に導電部が設けられていることを特徴とする。   The electromagnetic shield structure according to a fourth aspect of the present invention is the electromagnetic shield structure according to the first, second, or third aspect, wherein the two members are a top cover that forms one of the housings of a storage device such as an HDD, and the other. The seal part is provided in the peripheral part of the said housing | casing, and the electroconductive part is provided in the outer peripheral side or the inner peripheral side, It is characterized by the above-mentioned.

また、本発明の請求項5による電磁シールド構造は、上記した請求項1の電磁シールド構造において、二部材は、天面部および側面部を一体に有する一方の部材と、底面部および側面部を一体に有する他方の部材との組み合わせよりなり、前記一方の部材の側面部は前記他方の部材の側面部の内側に配置されて、前記一方の部材の側面部の先端部が前記他方の部材の底面部の内面に接触する接触部とされることにより導電部が構成され、前記一方の部材の側面部の外面と前記他方の部材の側面部の内面との間に間隙が設定され、前記一方の部材の側面部の外面および前記他方の部材の側面部の内面のいずれか一方に固定されたガスケットが他方に密接することを特徴とする。   The electromagnetic shield structure according to claim 5 of the present invention is the electromagnetic shield structure according to claim 1 described above, wherein the two members are one member integrally having a top surface portion and a side surface portion, and a bottom surface portion and a side surface portion. The side surface of the one member is disposed inside the side surface of the other member, and the tip of the side surface of the one member is the bottom surface of the other member. The conductive portion is configured by being a contact portion that contacts the inner surface of the portion, and a gap is set between the outer surface of the side surface portion of the one member and the inner surface of the side surface portion of the other member, A gasket fixed to one of the outer surface of the side surface of the member and the inner surface of the side surface of the other member is in close contact with the other.

また、本発明の請求項6による電磁シールド構造は、上記した請求項1の電磁シールド構造において、二部材は、天面部および側面部を一体に有する一方の部材と、底面部および側面部を一体に有する他方の部材との組み合わせよりなり、前記他方の部材の側面部は前記一方の部材の側面部の内側に配置されて、前記他方の部材の側面部の先端部が前記一方の部材の天面部の内面に接触する接触部とされることにより導電部が構成され、前記一方の部材の側面部の内面と前記他方の部材の側面部の外面との間に間隙が設定され、前記一方の部材の側面部の内面および前記他方の部材の側面部の外面のいずれか一方に固定されたガスケットが他方に密接することを特徴とする。   The electromagnetic shield structure according to claim 6 of the present invention is the electromagnetic shield structure according to claim 1 described above, wherein the two members are one member integrally having a top surface portion and a side surface portion, and a bottom surface portion and a side surface portion. The side surface of the other member is disposed inside the side surface of the one member, and the tip of the side surface of the other member is the top of the one member. The conductive portion is configured by being a contact portion that contacts the inner surface of the surface portion, and a gap is set between the inner surface of the side surface portion of the one member and the outer surface of the side surface portion of the other member, A gasket fixed to one of the inner surface of the side surface of the member and the outer surface of the side surface of the other member is in close contact with the other.

更にまた、本発明の請求項7による電磁シールド構造は、上記した請求項5または6の電磁シールド構造において、一方の部材は、HDD等の記憶装置の筐体の一方をなすトップカバーであり、他方の部材は、同じくHDD等の記憶装置の筐体の他方をなすベースであることを特徴とする。   Furthermore, the electromagnetic shield structure according to claim 7 of the present invention is the electromagnetic shield structure according to claim 5 or 6, wherein one member is a top cover that constitutes one of housings of a storage device such as an HDD, The other member is also a base that forms the other side of a housing of a storage device such as an HDD.

上記構成を備えた本発明の請求項1による電磁シールド構造においては、互いに対向する二部材間をシール部がシールし、二部材間を電磁波が通過しようとすると、これを導電部が遮断する。シール部としては、弾性体よりなるガスケットを用いるもので、すなわち一般ガスケットを用いることが可能である。導電部としては、一方の部材に設けた接触部を他方の部材に接触させることとし、具体的には、一方の部材に帯状の突起を設けて、この突起を他方の部材に接触させるのが好適である(請求項2)。   In the electromagnetic shield structure according to the first aspect of the present invention having the above-described configuration, the seal portion seals between the two members facing each other, and when the electromagnetic wave tries to pass between the two members, the conductive portion blocks this. As the seal portion, a gasket made of an elastic body is used, that is, a general gasket can be used. As the conductive portion, the contact portion provided on one member is brought into contact with the other member. Specifically, a belt-like projection is provided on one member, and this projection is brought into contact with the other member. (Claim 2).

接触は、或る程度の接触幅を確保するよう面接触させることとし、部材に締結時の反り現象が発生する場合には、接触が阻害されないよう工夫を凝らす必要がある。そこで本発明では、接触部を、事前に反りを入れた形状とし、締結時に部材締め付け力が作用すると平坦状となって相手部材に全面接触する形状に形成することにより対応することにした(請求項3)。   The contact is made to contact the surface so as to ensure a certain contact width, and when a warping phenomenon occurs at the time of fastening to the member, it is necessary to devise a device so that the contact is not hindered. Therefore, in the present invention, the contact portion is made into a shape with a warp in advance and formed into a shape that becomes flat when the member tightening force is applied during fastening and is in contact with the mating member (claim). Item 3).

二部材は例えば、HDD等の記憶装置の筐体の一方をなすトップカバーと、他方をなすベースとの組み合わせであり、この場合には、前記筐体の周縁部にシール部が設けられ、その外周側または内周側に導電部が設けられる(請求項4)。   The two members are, for example, a combination of a top cover that forms one of the housings of a storage device such as an HDD and a base that forms the other. In this case, a seal portion is provided at the peripheral edge of the housing. A conductive portion is provided on the outer peripheral side or the inner peripheral side.

また、一方の部材と他方の部材の重ね合わせ方向にガスケットが介装されて圧縮される構造であると、このガスケットの反発力によって部材に撓みが発生し易いことになるが、上記構成を備えた本発明の請求項5による電磁シールド構造のように、一方の部材の側面部の外面および他方の部材の側面部の内面のいずれか一方に固定されたガスケットが他方に密接する構造であったり、本発明の請求項6による電磁シールド構造のように、一方の部材の側面部の内面および他方の部材の側面部の外面のいずれか一方に固定されたガスケットが他方に密接する構造であったりすると、ガスケットが一方の部材および他方の部材の側面部間に配置されて横向き配置とされ、側面シールが構成される。側面シールは、一方の部材と他方の部材が重ね合わされて圧縮荷重が作用しても反発力が増大しないものである。したがって、ガスケットの反発力にもとづく部材の反りが発生しにくいものとなる。   Further, if the gasket is interposed and compressed in the overlapping direction of one member and the other member, the member is likely to bend due to the repulsive force of the gasket. As in the electromagnetic shield structure according to claim 5 of the present invention, the gasket fixed to one of the outer surface of the side surface of one member and the inner surface of the side surface of the other member is in close contact with the other. As in the electromagnetic shield structure according to claim 6 of the present invention, the gasket fixed to one of the inner surface of the side surface of one member and the outer surface of the side surface of the other member is in close contact with the other. Then, a gasket is arrange | positioned between the side parts of one member and the other member, it is set as sideways arrangement | positioning, and a side seal is comprised. The side seal is one in which one member and the other member are overlapped and the repulsive force does not increase even when a compressive load is applied. Accordingly, the member is less likely to warp based on the repulsive force of the gasket.

一方の部材は例えば、HDD等の記憶装置の筐体の一方をなすトップカバーであり、他方の部材は、同じくHDD等の記憶装置の筐体の他方をなすベースであり、この場合には、トップカバーに反りが発生しにくくなる(請求項7)。   One member is, for example, a top cover that forms one side of a housing of a storage device such as an HDD, and the other member is a base that also forms the other side of the housing of a storage device such as an HDD. In this case, The top cover is less likely to warp (Claim 7).

本発明は、以下の効果を奏する。   The present invention has the following effects.

すなわち、上記構成を備えた本発明の請求項1または2による電磁シールド構造においては、互いに対向する二部材間をシール部がシールし、二部材間を通過しようとする電磁波を導電部が遮断し、シール部として弾性体よりなるガスケットを用いるようにしたために、一般のガスケットをその材質や形状に変更を加えることなくそのまま用いることができ、しかも電磁波シールド効果を十分に発揮することが可能な電磁シールド構造を提供することができる。   That is, in the electromagnetic shield structure according to claim 1 or 2 of the present invention having the above-described configuration, the seal portion seals between the two members facing each other, and the conductive portion blocks the electromagnetic wave that attempts to pass between the two members. Since a gasket made of an elastic material is used as the seal portion, a general gasket can be used as it is without changing its material and shape, and an electromagnetic wave that can sufficiently exhibit the electromagnetic shielding effect. A shield structure can be provided.

またこれに加えて、本発明の請求項3による電磁シールド構造においては、カバーやベース等の部材に締結時の反り現象が発生する場合であっても、電磁波シールド効果を損なうことがない電磁シールド構造を提供することができる。   In addition to this, in the electromagnetic shield structure according to the third aspect of the present invention, even if a warping phenomenon occurs when fastening to a member such as a cover or a base, the electromagnetic shield effect is not impaired. Structure can be provided.

また、本発明の請求項4による電磁シールド構造においては、HDD等の記憶装置の筐体をなすトップカバーおよびベース間において上記請求項1ないし3による作用効果を得ることができる。   In the electromagnetic shield structure according to claim 4 of the present invention, the operation and effect of the above claims 1 to 3 can be obtained between the top cover and the base forming the housing of a storage device such as an HDD.

また、本発明の請求項5または6による電磁シールド構造においては、ガスケットが一方の部材および他方の部材の側面部間に配置されて横向き配置とされ、側面シールが構成されることから、ガスケットの反発力にもとづいて部材に反りが発生するのを抑えることができる。   In the electromagnetic shield structure according to claim 5 or 6 of the present invention, the gasket is disposed between the side portions of the one member and the other member so as to be disposed sideways, and the side seal is configured. It is possible to prevent the member from warping based on the repulsive force.

また、本発明の請求項7による電磁シールド構造においては、HDD等の記憶装置の筐体をなすトップカバーおよびベースにおいて上記請求項5または6による作用効果を得ることができる。   In the electromagnetic shield structure according to claim 7 of the present invention, the function and effect of claim 5 or 6 can be obtained in the top cover and base forming the housing of a storage device such as an HDD.

尚、本発明には、以下の実施形態が含まれる。   The present invention includes the following embodiments.

(1)ゴム又は樹脂などの弾性体によるガスケットをもち、その外側にカバー突起を作成し、カバーとベースを接触し導電させる。
(2)ゴム又は樹脂などの弾性体によるガスケットをもち、その外側にベース突起を作成し、カバーとベースを接触し導電させる。
(3)事前にカバーに反りを入れる。
(4)ゴム又は樹脂などの弾性体によるガスケットのシール性を維持しつつ、その外周側全域にカバーおよびベース突起を作成し導電させる。
(5)ガスケット全周の外側にカバーおよびベース突起を作成し、カバーとベースを接触させることで導電させ、電磁シールド効果を向上させる。
(6)カバーの撓み量を計算し、カバーとベース間に隙間が発生しないよう事前にカバーに反りを入れる。
(1) It has a gasket made of an elastic material such as rubber or resin, and a cover projection is formed on the outside thereof, and the cover and the base are brought into contact with each other to conduct electricity.
(2) A gasket made of an elastic body such as rubber or resin is provided, and a base projection is formed on the outside thereof, and the cover and the base are brought into contact with each other to conduct electricity.
(3) Warp the cover in advance.
(4) A cover and a base protrusion are created and made conductive throughout the outer peripheral side of the gasket while maintaining the sealing performance of the gasket by an elastic body such as rubber or resin.
(5) A cover and a base protrusion are formed outside the entire circumference of the gasket, and the cover and the base are brought into contact to conduct electricity, thereby improving the electromagnetic shielding effect.
(6) Calculate the amount of bending of the cover, and warp the cover in advance so that there is no gap between the cover and the base.

つぎに本発明の実施例を図面にしたがって説明する。   Next, embodiments of the present invention will be described with reference to the drawings.

第一実施例・・・
図1は、本発明の第一実施例に係る電磁シールド構造を示しており、具体的には、同構造を備えたHDD記憶装置の筐体の一方をなすトップカバー1と、他方をなすベース2の要部断面を示している。図の右側が装置(筐体)の内側、左側が外側である。
First embodiment ...
FIG. 1 shows an electromagnetic shield structure according to a first embodiment of the present invention. Specifically, a top cover 1 forming one of the housings of an HDD storage device having the structure and a base forming the other. 2 shows a cross-section of the main part. The right side of the figure is the inside of the device (housing) and the left side is the outside.

ベース2は、底面部2aの周縁に側面部2bを全周に亙って設けたもので、この側面部2bの上面に載せられるかたちにてカバー1が被せられている。カバー1は、天面部1aの周縁に側面部1bを全周に亙って設けたもので、側面部1bはベース2の側面部2bの外側に配置されている。カバー1およびベース2は共にアルミなどの導電材質によって成形されている。   The base 2 is provided with a side surface portion 2b around the entire periphery of the bottom surface portion 2a, and the cover 1 is covered so as to be placed on the upper surface of the side surface portion 2b. The cover 1 is provided with a side surface portion 1 b around the entire periphery of the top surface portion 1 a, and the side surface portion 1 b is disposed outside the side surface portion 2 b of the base 2. Both the cover 1 and the base 2 are formed of a conductive material such as aluminum.

ベース2の側面部2bの上面に密接するよう、カバー1の天面部1aの下面にガスケット4が全周に亙って被着されており、このガスケット4によってカバー1およびベース2間をシールするシール部3が全周に亙って形成されている。ガスケット4はゴムまたは樹脂などの弾性体によって成形されており、所定のシール幅wを設定されている。   A gasket 4 is attached to the lower surface of the top surface portion 1a of the cover 1 so as to be in close contact with the upper surface of the side surface portion 2b of the base 2, and the gap between the cover 1 and the base 2 is sealed by the gasket 4. The seal portion 3 is formed over the entire circumference. The gasket 4 is formed of an elastic body such as rubber or resin, and has a predetermined seal width w.

シール部3ないしガスケット4の外側において、カバー1およびベース2の対向部には、両部材1,2の間を導電させる導電部5が全周に亙って設けられており、この導電部5は、カバー1の天面部1aの下面に下向きに設けられてベース2の側面部2bの上面に接触する帯状の突起よりなる接触部6によって形成されている。突起状の接触部6は、所定の高さhと接触幅cを設定されている。接触幅cは、下記するところの漏洩距離を構成する。   Outside the seal portion 3 or the gasket 4, a conductive portion 5 that conducts between the members 1 and 2 is provided on the entire periphery of the opposing portion of the cover 1 and the base 2. Is formed by a contact portion 6 formed of a belt-like protrusion that is provided downward on the lower surface of the top surface portion 1 a of the cover 1 and contacts the upper surface of the side surface portion 2 b of the base 2. The protruding contact portion 6 has a predetermined height h and a contact width c. The contact width c constitutes the leakage distance as described below.

上記構成の電磁シールド構造においては、互いに対向するカバー1およびベース2間をシール部3がシールし、シール部3を電磁波が通過しようとするとこの電磁波を導電部5が遮断することから、シール効果および電磁波シールド効果双方に優れたHDD記憶装置を提供することができる。   In the electromagnetic shield structure having the above configuration, the seal portion 3 seals between the cover 1 and the base 2 facing each other, and when the electromagnetic wave tries to pass through the seal portion 3, the conductive portion 5 blocks the electromagnetic wave. Further, it is possible to provide an HDD storage device that is excellent in both the electromagnetic shielding effect.

また、シール部3として弾性体よりなるガスケット4を用いるもので、すなわち一般のガスケット4をそのまま用いることが可能であることから、上記従来技術における欠点として列挙したコスト高騰、フィラー分散困難、硬度増大、コンタミ発生、膜厚バラツキ発生、リーク性およびリワーク性などの問題を抑制することができる。   Further, since the gasket 4 made of an elastic body is used as the seal portion 3, that is, it is possible to use the general gasket 4 as it is, so that the cost increase, the filler dispersion difficulty, the hardness increase, which are listed as the disadvantages in the prior art described above. Problems such as contamination, film thickness variation, leakiness, and reworkability can be suppressed.

第二実施例・・・
尚、上記実施例において、導電部5は、カバー1の天面部1aの下面に下向きに設けられてベース2の側面部2bの上面に接触する帯状の突起よりなる接触部6によって形成されているものとしたが、これに代えて、図2に示すように上下反対に、ベース2の側面部2bの上面に上向きに設けられてカバー1の天面部1aの下面に接触する帯状の突起よりなる接触部6によって形成されているものとしても良い。
Second embodiment ...
In the above embodiment, the conductive portion 5 is formed by the contact portion 6 formed of a belt-like protrusion that is provided downward on the lower surface of the top surface portion 1 a of the cover 1 and contacts the upper surface of the side surface portion 2 b of the base 2. However, instead of this, as shown in FIG. 2, upside down, as shown in FIG. It may be formed by the contact portion 6.

第三実施例・・・
また、図3(A)に示すように、上記HDDのカバー1およびベース2は一般に複数のネジ7を用いて互いに締結されるが、図3(B)に示すように、締結時にネジ7の締め込み力によって反り現象が発生することがあり、反り現象が発生すると、接触部6が相手部材(接触部6がカバー1に設けられている場合は相手部材はベース2(図1)、接触部6がベース2に設けられている場合は相手部材はカバー1(図2))に対して全周に亙って全面接触しなくなることが懸念される。そこで、これを防止するには、図4(A)に示すように、接触部6を事前に反りを入れた形状とし、図4(B)に示すように、締結時にネジ7の締め込み力が作用すると平坦状となって相手部材に全面接触する形状に形成すると良い。ネジ7の近傍部位は反り量が小さく、ネジ7から遠く離れた部位では反り量が大きくなるので、これを考慮のうえで事前形状を決定する。
Third embodiment ...
As shown in FIG. 3A, the HDD cover 1 and the base 2 are generally fastened together by using a plurality of screws 7. However, as shown in FIG. The warping phenomenon may occur due to the tightening force. When the warping phenomenon occurs, the contact portion 6 is the mating member (when the contact portion 6 is provided on the cover 1, the mating member is the base 2 (FIG. 1), the contact When the portion 6 is provided on the base 2, there is a concern that the mating member does not come into full contact with the cover 1 (FIG. 2) over the entire circumference. Therefore, in order to prevent this, as shown in FIG. 4A, the contact portion 6 is warped in advance, and as shown in FIG. When it works, it is preferable to form a flat shape that contacts the entire surface of the mating member. In the vicinity of the screw 7, the amount of warpage is small, and in the portion far from the screw 7, the amount of warpage is large.

また、本願発明者らは、電磁波シールド効果について比較試験を行なったので、以下にこの比較試験について説明する。   Moreover, since this inventor performed the comparative test about the electromagnetic wave shielding effect, this comparative test is demonstrated below.

電磁波シールド効果比較試験
(1)サンプル説明
実施例1)アルミカバー(2.62×10-6Ωcm)漏洩距離cが0.1mmの場合(図5参照)
実施例2)アルミカバー(2.62×10-6Ωcm)漏洩距離cが0.3mmの場合(図6参照)
比較例1)電磁シールドガスケット:導電性フィラー含有使用(体積固有抵抗 1Ωcm)漏洩距離cが1mmの場合(図7(A)参照)
比較例2)電磁シールドガスケット:導電性フィラー含有使用(体積固有抵抗 1Ωcm)漏洩距離cが3mmの場合(図7(B)参照)
比較例3)電磁シールドガスケット:導電性フィラー含有使用(体積固有抵抗 10-2Ωcm)漏洩距離cが1mmの場合(図7(C)参照)
比較例4)電磁シールドガスケット:導電性フィラー含有使用(体積固有抵抗 10-2Ωcm)漏洩距離cが3mmの場合(図7(D)参照)
Electromagnetic shielding effectiveness comparison test
(1) Sample explanation Example 1) Aluminum cover (2.62 × 10-6 Ωcm) When the leakage distance c is 0.1 mm (see FIG. 5)
Example 2) Aluminum cover (2.62 × 10-6 Ωcm) When the leakage distance c is 0.3 mm (see FIG. 6)
Comparative Example 1) Electromagnetic shield gasket: containing conductive filler (volume resistivity 1 Ωcm) When leakage distance c is 1 mm (see FIG. 7A)
Comparative Example 2) Electromagnetic shield gasket: containing conductive filler (volume resistivity 1 Ωcm) When leakage distance c is 3 mm (see FIG. 7B)
Comparative Example 3) Electromagnetic shielding gasket: containing conductive filler (volume resistivity 10-2 Ωcm) When leakage distance c is 1 mm (see FIG. 7C)
Comparative Example 4) Electromagnetic shield gasket: containing conductive filler (volume resistivity 10-2 Ωcm) When leakage distance c is 3 mm (see Fig. 7 (D))

(2)結 果
表1

Figure 2006203150
注1)上記シールド効果はSchelkunoffの定理より算出
Se(dB)=R(反射損失)+A(吸収損失)+B(多重反射損失)
=168-10log(μr×f/σr)+1.31×t×(f×μr×σr)1/2
=50+10log(1/(f×10-6×ρ))+1.7×t×(f/ρ)1/2
μr:シールド材料の比透磁率(非磁性体を用いるため、比透磁率は1とする)
σr:シールド材料の比導電率 σr=1/ρ ρ:体積固有抵抗(Ωcm)
t:シールド材料の厚み(cm) f:電磁波の周波数(Hz)

注2)シールド効果の基準
10dB以下:ほとんど効果なし
10〜30dB:最小限度のシールド効果あり
30〜60dB:平均的効果
60〜90dB:平均以上の効果
90dB以上:最高技術によるシールド効果 (2) Results
Table 1
Figure 2006203150
Note 1) The above shielding effect is calculated from Schelkunoff's theorem.
Se (dB) = R (reflection loss) + A (absorption loss) + B (multiple reflection loss)
= 168-10log (μr × f / σr) + 1.31 × t × (f × μr × σr) 1/2
= 50 + 10log (1 / (f × 10-6 × ρ)) + 1.7 × t × (f / ρ) 1/2
μr: relative permeability of shield material (because nonmagnetic material is used, relative permeability is 1)
σr: Specific conductivity of shield material σr = 1 / ρ ρ: Volume resistivity (Ωcm)
t: Shield material thickness (cm) f: Electromagnetic frequency (Hz)

Note 2) Standard of shielding effect
10dB or less: almost no effect
10 to 30 dB: Minimal shielding effect
30-60dB: Average effect
60-90dB: Above average effect
90dB or more: Shielding effect by the highest technology

以上の結果よりして、本発明(実施例1および2)によれば顕著なシールド効果を確認することができた。   Based on the above results, a remarkable shielding effect could be confirmed according to the present invention (Examples 1 and 2).

また、請求項3に係る反りに対する事前形状については、カバータワミ量計算式が、
タワミ量σa max=5×W×L4/(384×E×I)・・・・(a)式
W:ガスケット反力(N/mm)
L:取付けネジピッチ(mm)
E:カバー材質のヤング率(N/mm2)
I:カバーのモーメント(N・mm4)
であるので、この(a)式より、カバーの反りはネジピッチ間の中心が最大となるため、ネジピッチ間の中心でσa max以上必要とされる。
Further, for the prior shape for the warp according to claim 3, the cover wrinkle amount calculation formula is:
Tear amount σa max = 5 × W × L4 / (384 × E × I) ... (a) Formula
W: Gasket reaction force (N / mm)
L: Mounting screw pitch (mm)
E: Young's modulus of cover material (N / mm2)
I: Cover moment (N · mm4)
Therefore, from the equation (a), the warp of the cover has a maximum at the center between the screw pitches.

尚、図3(B)にて発生する反りの大きさ(σa max)と図4(A)にて設定する反りの大きさ(σb max)の関係で云うと、ガスケット4のつぶし量が大きくなることで反力が大きくなることから、後者は前者よりも若干大きく設定することが好ましい(σa
max<σb max)。
Note that the amount of squashing of the gasket 4 is large in relation to the warpage magnitude (σa max) generated in FIG. 3B and the warpage magnitude (σb max) set in FIG. 4A. Therefore, the latter is preferably set slightly larger than the former (σa
max <σb max).

第四実施例・・・
図8は、本発明の第四実施例に係る電磁シールド構造を示しており、具体的には、同構造を備えたHDD記憶装置の筐体の一方をなすトップカバー1と、他方をなすベース2の要部断面を示している。図の右側が装置(筐体)の内側、左側が外側である。
Fourth embodiment ...
FIG. 8 shows an electromagnetic shield structure according to a fourth embodiment of the present invention. Specifically, the top cover 1 forming one of the housings of the HDD storage device having the structure and the base forming the other are shown. 2 shows a cross-section of the main part. The right side of the figure is the inside of the device (housing) and the left side is the outside.

ベース2は、底面部2aの周縁に側面部2bを全周に亙って設けたもので、このベース2の内部に収められるようにしてカバー1が被せられている。カバー1は、天面部1aの周縁に側面部1bを全周に亙って設けたもので、側面部1bはベース2の側面部2bの内側(図では右側)に配置され、その先端部(下端部)ないし先端面(下端面)がベース2の底面部2aの内面(図では上面)に直接接触する接触部6とされることにより、導電部5が構成されている。カバー1の側面部1bは、その先端部ないし先端面が全面に亙ってベース2の底面部2aの内面に接触している。   The base 2 is provided with a side surface 2b around the entire periphery of the bottom surface 2a, and the cover 1 is covered so as to be accommodated in the base 2. The cover 1 is provided with a side face 1b around the entire periphery of the top face 1a. The side face 1b is disposed on the inner side (right side in the figure) of the side face 2b of the base 2, and its tip ( The conductive portion 5 is configured such that the lower end portion or the front end surface (lower end surface) is the contact portion 6 that directly contacts the inner surface (upper surface in the drawing) of the bottom surface portion 2a of the base 2. The side surface portion 1 b of the cover 1 is in contact with the inner surface of the bottom surface portion 2 a of the base 2 over the entire front end portion or front end surface.

また、カバー1の側面部1bの外面とベース2の側面部2bの内面との間には所定の大きさcの間隙(水平方向間隙)8が全周に亙って設定され、この間隙8内にガスケット4が配置されてシール部3が構成されている。すなわち、前者のカバー1の側面部1bの外面に所定のゴムまたは樹脂等の弾性体よりなるガスケット4が外向き(図では左向き)に被着され、このガスケット4が後者のベース2の側面部2bの内面に密接することにより、シール部3が構成されている。ガスケット4は、カバー1とベース2の重ね合わせ方向(図では上下方向、垂直方向)ではなく、重ね合わせ方向と直交する方向(図では左右方向、水平方向)に向けられることになる。カバー1およびベース2は共にアルミなどの導電材質によって成形されている。   Further, a gap (horizontal gap) 8 having a predetermined size c is set over the entire circumference between the outer surface of the side surface portion 1 b of the cover 1 and the inner surface of the side surface portion 2 b of the base 2. A gasket 4 is arranged in the inside to constitute a seal portion 3. That is, a gasket 4 made of an elastic body such as predetermined rubber or resin is attached outward (leftward in the figure) on the outer surface of the side surface portion 1b of the former cover 1, and this gasket 4 is attached to the side surface portion of the latter base 2. The seal portion 3 is configured by being in close contact with the inner surface of 2b. The gasket 4 is directed not in the overlapping direction of the cover 1 and the base 2 (up and down direction and vertical direction in the figure) but in the direction orthogonal to the overlapping direction (left and right direction and horizontal direction in the figure). Both the cover 1 and the base 2 are formed of a conductive material such as aluminum.

上記構成の電磁シールド構造においては、互いに対向するカバー1およびベース2間をシール部3がシールし、シール部3を電磁波が通過するとこの電磁波を導電部5が遮断することから、シール効果および電磁波シールド効果双方に優れたHDD記憶装置を提供することができる。   In the electromagnetic shield structure having the above configuration, the seal portion 3 seals between the cover 1 and the base 2 facing each other, and when the electromagnetic wave passes through the seal portion 3, the electromagnetic wave is blocked by the conductive portion 5. It is possible to provide an HDD storage device excellent in both shielding effects.

また、シール部3として弾性体よりなるガスケット4を用いるもので、すなわち一般のガスケット4をそのまま用いることが可能であることから、上記従来技術における欠点として列挙したコスト高騰、フィラー分散困難、硬度増大、コンタミ発生、膜厚バラツキ発生、リーク性およびリワーク性などの問題を抑制することができる。   Further, since the gasket 4 made of an elastic body is used as the seal portion 3, that is, it is possible to use the general gasket 4 as it is, so that the cost increase, the filler dispersion difficulty, the hardness increase, which are listed as the disadvantages in the prior art described above. Problems such as contamination, film thickness variation, leakiness, and reworkability can be suppressed.

また、カバー1の側面部1bの外面にガスケット4が外向きに被着され、このガスケット4がベース2の側面部2aの内面に密接する構造とされていることから、このガスケット4によるシール部3は、カバー1およびベース2の重ね合わせ方向に対してガスケット4の密接方向が直交する「側面シール」として構成される。側面シールは、カバー1およびベース2が重ね合わされて圧縮荷重が作用しても反発力が増大することがない。したがって、ガスケット4の反発力にもとづいてカバー1に反りが発生するのを未然に防止することができる。   Further, since the gasket 4 is attached outwardly to the outer surface of the side surface portion 1b of the cover 1 and the gasket 4 is in close contact with the inner surface of the side surface portion 2a of the base 2, the seal portion by the gasket 4 is used. 3 is configured as a “side seal” in which the close direction of the gasket 4 is orthogonal to the overlapping direction of the cover 1 and the base 2. The side seal does not increase the repulsive force even when the cover 1 and the base 2 are overlapped and a compressive load is applied. Accordingly, it is possible to prevent the cover 1 from warping based on the repulsive force of the gasket 4.

また、ガスケット4がカバー1の側面部1bの先端面ではなく外面に被着される構造とされていることから、カバー1が板金等の薄肉材料よりなるものであっても十分な広さの被着スペースを確保することができる。   Further, since the gasket 4 is structured to be attached to the outer surface rather than the front end surface of the side surface portion 1b of the cover 1, even if the cover 1 is made of a thin material such as a sheet metal, it is sufficiently wide. A deposition space can be secured.

第五実施例・・・
尚、ガスケット4は、図9に示すように、ベース2の側面部2bの内面に内向き(図では右向き)に被着されて、カバー1の側面部1bの外面に密接するものであっても良い。
Fifth Example ...
As shown in FIG. 9, the gasket 4 is attached to the inner surface of the side surface portion 2 b of the base 2 inwardly (toward the right in the figure) and is in close contact with the outer surface of the side surface portion 1 b of the cover 1. Also good.

第六実施例・・・
図10は、本発明の第六実施例に係る電磁シールド構造を示しており、具体的には、同構造を備えたHDD記憶装置の筐体の一方をなすトップカバー1と、他方をなすベース2の要部断面を示している。図の右側が装置(筐体)の内側、左側が外側である。
Sixth Example ...
FIG. 10 shows an electromagnetic shield structure according to a sixth embodiment of the present invention. Specifically, a top cover 1 forming one of the housings of an HDD storage device having the structure and a base forming the other are shown. 2 shows a cross-section of the main part. The right side of the figure is the inside of the device (housing) and the left side is the outside.

ベース2は、底面部2aの周縁に側面部2bを全周に亙って設けたもので、この側面部2bの上面に載せられるかたちにてカバー1が被せられている。カバー1は、天面部1aの周縁に側面部1bを全周に亙って設けたもので、側面部1bはベース2の側面部2bの外側(図では左側)に配置され、このカバー1の側面部1bに対してベース2の側面部2bはその内側(図では右側)に配置され、その先端部(上端部)ないし先端面(上端面)がカバー1の天面部1aの内面(図では下面)に直接接触する接触部6とされることにより、導電部5が構成されている。ベース2の側面部2bは、その先端部ないし先端面が全面に亙ってカバー1の天面部1aの内面に接触している。   The base 2 is provided with a side surface portion 2b around the entire periphery of the bottom surface portion 2a, and the cover 1 is covered so as to be placed on the upper surface of the side surface portion 2b. The cover 1 is provided with a side surface portion 1b around the entire periphery of the top surface portion 1a. The side surface portion 1b is disposed outside the side surface portion 2b of the base 2 (left side in the figure). The side surface portion 2b of the base 2 is disposed on the inner side (right side in the figure) with respect to the side surface portion 1b, and the front end portion (upper end portion) or the front end surface (upper end surface) is the inner surface (in the drawing, the top surface portion 1a). The conductive portion 5 is configured by being the contact portion 6 that directly contacts the lower surface. The side surface portion 2b of the base 2 is in contact with the inner surface of the top surface portion 1a of the cover 1 over the entire front end portion or front end surface.

また、カバー1の側面部1bの内面とベース2の側面部2bの外面との間には所定の大きさcの間隙(水平方向間隙)8が全周に亙って設定され、この間隙8内にガスケット4が配置されてシール部3が構成されている。すなわち、前者のカバー1の側面部1bの内面に所定のゴムまたは樹脂等の弾性体よりなるガスケット4が内向き(図では右向き)に被着され、このガスケット4が後者のベース2の側面部2bの外面に密接することにより、シール部3が構成されている。ガスケット4は、カバー1とベース2の重ね合わせ方向(図では上下方向、垂直方向)ではなく、重ね合わせ方向と直交する方向(図では左右方向、水平方向)に向けられることになる。カバー1およびベース2は共にアルミなどの導電材質によって成形されている。   Further, a gap (horizontal gap) 8 having a predetermined size c is set over the entire circumference between the inner surface of the side surface portion 1 b of the cover 1 and the outer surface of the side surface portion 2 b of the base 2. A gasket 4 is arranged inside to form a seal portion 3. That is, a gasket 4 made of an elastic material such as a predetermined rubber or resin is attached inward (rightward in the drawing) on the inner surface of the side surface portion 1b of the former cover 1, and this gasket 4 is attached to the side surface portion of the latter base 2. The seal portion 3 is configured by being in close contact with the outer surface of 2b. The gasket 4 is directed not in the overlapping direction of the cover 1 and the base 2 (up and down direction and vertical direction in the figure) but in the direction orthogonal to the overlapping direction (left and right direction and horizontal direction in the figure). Both the cover 1 and the base 2 are formed of a conductive material such as aluminum.

上記構成の電磁シールド構造においては、互いに対向するカバー1およびベース2間をシール部3がシールし、シール部3を電磁波が通過するとこの電磁波を導電部5が遮断することから、シール効果および電磁波シールド効果双方に優れたHDD記憶装置を提供することができる。   In the electromagnetic shield structure configured as described above, the seal portion 3 seals between the cover 1 and the base 2 facing each other, and when the electromagnetic wave passes through the seal portion 3, the conductive portion 5 blocks the electromagnetic wave. It is possible to provide an HDD storage device excellent in both shielding effects.

また、シール部3として弾性体よりなるガスケット4を用いるもので、すなわち一般のガスケット4をそのまま用いることが可能であることから、上記従来技術における欠点として列挙したコスト高騰、フィラー分散困難、硬度増大、コンタミ発生、膜厚バラツキ発生、リーク性およびリワーク性などの問題を抑制することができる。   Further, since the gasket 4 made of an elastic body is used as the seal portion 3, that is, it is possible to use the general gasket 4 as it is, so that the cost increase, the filler dispersion difficulty, the hardness increase, which are listed as the disadvantages in the prior art described above. Problems such as contamination, film thickness variation, leakiness, and reworkability can be suppressed.

また、カバー1の側面部1bの内面にガスケット4が内向きに被着され、このガスケット4がベース2の側面部2aの外面に密接する構造とされていることから、このガスケット4によるシール部3は、カバー1およびベース2の重ね合わせ方向に対してガスケット4の密接方向が直交する「側面シール」として構成される。側面シールは、カバー1およびベース2が重ね合わされて圧縮荷重が作用しても反発力が増大することがない。したがって、ガスケット4の反発力にもとづいてカバー1に反りが発生するのを未然に防止することができる。   Further, the gasket 4 is attached inwardly to the inner surface of the side surface portion 1b of the cover 1, and the gasket 4 is in close contact with the outer surface of the side surface portion 2a of the base 2. 3 is configured as a “side seal” in which the close direction of the gasket 4 is orthogonal to the overlapping direction of the cover 1 and the base 2. The side seal does not increase the repulsive force even when the cover 1 and the base 2 are overlapped and a compressive load is applied. Accordingly, it is possible to prevent the cover 1 from warping based on the repulsive force of the gasket 4.

また、ガスケット4がカバー1の側面部1bの先端面ではなく内面に被着される構造とされていることから、カバー1が板金等の薄肉材料よりなるものであっても十分な広さの被着スペースを確保することができる。   In addition, since the gasket 4 is configured to be attached to the inner surface rather than the front end surface of the side surface portion 1b of the cover 1, even if the cover 1 is made of a thin material such as a sheet metal, it is sufficiently wide. A deposition space can be secured.

第七実施例・・・
尚、ガスケット4は、図11に示すように、ベース2の側面部2bの外面に外向き(図では左向き)に被着されて、カバー1の側面部1bの内面に密接するものであっても良い。
Seventh Example ...
As shown in FIG. 11, the gasket 4 is attached to the outer surface of the side surface portion 2 b of the base 2 outward (leftward in the figure) and is in close contact with the inner surface of the side surface portion 1 b of the cover 1. Also good.

本発明の第一実施例に係る電磁シールド構造の断面図Sectional drawing of the electromagnetic shielding structure which concerns on 1st Example of this invention 本発明の第二実施例に係る電磁シールド構造の断面図Sectional drawing of the electromagnetic shielding structure which concerns on 2nd Example of this invention 反り現象発生の説明図Illustration of warping phenomenon 本発明の第三実施例に係る反り現象対応策の説明図Explanatory drawing of the countermeasure against the warp phenomenon according to the third embodiment of the present invention 比較試験における実施例1の構造を示す断面図Sectional drawing which shows the structure of Example 1 in a comparative test 比較試験における実施例2の構造を示す断面図Sectional drawing which shows the structure of Example 2 in a comparative test 比較試験における各比較例の構造を示す断面図Sectional drawing which shows the structure of each comparative example in a comparative test 本発明の第四実施例に係る電磁シールド構造の断面図Sectional drawing of the electromagnetic shielding structure which concerns on 4th Example of this invention 本発明の第五実施例に係る電磁シールド構造の断面図Sectional drawing of the electromagnetic shielding structure which concerns on 5th Example of this invention 本発明の第六実施例に係る電磁シールド構造の断面図Sectional drawing of the electromagnetic shielding structure which concerns on 6th Example of this invention 本発明の第七実施例に係る電磁シールド構造の断面図Sectional drawing of the electromagnetic shielding structure which concerns on 7th Example of this invention 従来例を示す断面図Sectional view showing a conventional example

符号の説明Explanation of symbols

1 カバー(一方の部材)
1a 天面部
1b,2b 側面部
2 ベース(他方の部材)
2a 底面部
3 シール部
4 ガスケット
5 導電部
6 接触部
7 ネジ
8 間隙
1 Cover (one member)
1a Top surface portion 1b, 2b Side surface portion 2 Base (other member)
2a Bottom part 3 Seal part 4 Gasket 5 Conductive part 6 Contact part 7 Screw 8 Gap

Claims (7)

互いに対向する二部材(1)(2)間を弾性体よりなるガスケット(4)にてシールするシール部(3)を有し、かつ前記二部材(1)(2)間を電磁波が通過しないよう電磁シールドをなす構造であって、
前記シール部(3)と並列して前記シール部(3)の外側または内側に前記二部材(1)(2)間を導電させる導電部(5)を有し、前記導電部(5)は、前記二部材(1)(2)のうちの何れか一方の部材に設けた接触部(6)を他方の部材に接触させるものであることを特徴とする電磁シールド構造。
It has a seal part (3) that seals between the two members (1) and (2) facing each other with a gasket (4) made of an elastic body, and electromagnetic waves do not pass between the two members (1) and (2). It is a structure that makes an electromagnetic shield,
In parallel with the seal part (3), it has a conductive part (5) that conducts between the two members (1) and (2) outside or inside the seal part (3), and the conductive part (5) The electromagnetic shield structure is characterized in that the contact portion (6) provided on one of the two members (1) and (2) is brought into contact with the other member.
請求項1の電磁シールド構造において、
接触部(6)は、他方の部材へ向けて一方の部材に設けた帯状の突起として設けられていることを特徴とする電磁シールド構造。
The electromagnetic shield structure according to claim 1,
The electromagnetic shield structure, wherein the contact portion (6) is provided as a band-shaped protrusion provided on one member toward the other member.
請求項1または2の電磁シールド構造において、
ネジ(7)等の固定手段を用いて二部材(1)(2)を締結したときに生じる部材の反り現象に対応して、接触部(6)は事前に反りを入れた形状とし、締結時に部材締め付け力が作用すると平坦状となって相手部材に全面接触する形状に形成されていることを特徴とする電磁シールド構造。
The electromagnetic shield structure according to claim 1 or 2,
Corresponding to the warping phenomenon of the member that occurs when the two members (1) and (2) are fastened using fixing means such as screws (7), the contact portion (6) is shaped with a pre-warped and fastened An electromagnetic shield structure characterized by being formed into a shape that is flat when a member clamping force is applied, and is in contact with the entire surface of the mating member.
請求項1、2または3の電磁シールド構造において、
二部材は、HDD等の記憶装置の筐体の一方をなすトップカバー(1)と、他方をなすベース(2)との組み合わせよりなり、前記筐体の周縁部にシール部(3)が設けられ、その外周側または内周側に導電部(5)が設けられていることを特徴とする電磁シールド構造。
The electromagnetic shield structure according to claim 1, 2, or 3,
The two members are a combination of a top cover (1) that forms one of the housings of a storage device such as an HDD and a base (2) that forms the other, and a seal portion (3) is provided at the peripheral edge of the housing. The electromagnetic shield structure is characterized in that a conductive portion (5) is provided on the outer peripheral side or the inner peripheral side.
請求項1の電磁シールド構造において、
二部材は、天面部(1a)および側面部(1b)を一体に有する一方の部材(1)と、底面部(2a)および側面部(2b)を一体に有する他方の部材(2)との組み合わせよりなり、
前記一方の部材(1)の側面部(1b)は前記他方の部材(2)の側面部(2b)の内側に配置されて、前記一方の部材(1)の側面部(1b)の先端部が前記他方の部材(2)の底面部(2a)の内面に接触する接触部(6)とされることにより導電部(5)が構成され、
前記一方の部材(1)の側面部(1b)の外面と前記他方の部材(2)の側面部(2b)の内面との間に間隙(8)が設定され、前記一方の部材(1)の側面部(1b)の外面および前記他方の部材(2)の側面部(2b)の内面のいずれか一方に固定されたガスケット(4)が他方に密接することを特徴とする電磁シールド構造。
The electromagnetic shield structure according to claim 1,
The two members are: one member (1) integrally having a top surface portion (1a) and a side surface portion (1b), and the other member (2) integrally having a bottom surface portion (2a) and a side surface portion (2b). A combination of
The side surface portion (1b) of the one member (1) is disposed inside the side surface portion (2b) of the other member (2), and the front end portion of the side surface portion (1b) of the one member (1). Is configured as a contact portion (6) that contacts the inner surface of the bottom surface portion (2a) of the other member (2), thereby forming a conductive portion (5),
A gap (8) is set between the outer surface of the side surface (1b) of the one member (1) and the inner surface of the side surface (2b) of the other member (2), and the one member (1) A gasket (4) fixed to either one of the outer surface of the side surface portion (1b) and the inner surface of the side surface portion (2b) of the other member (2) is in close contact with the other.
請求項1の電磁シールド構造において、
二部材は、天面部(1a)および側面部(1b)を一体に有する一方の部材(1)と、底面部(2a)および側面部(2b)を一体に有する他方の部材(2)との組み合わせよりなり、
前記他方の部材(2)の側面部(2b)は前記一方の部材(1)の側面部(1b)の内側に配置されて、前記他方の部材(2)の側面部(2b)の先端部が前記一方の部材(1)の天面部(1a)の内面に接触する接触部(6)とされることにより導電部(5)が構成され、
前記一方の部材(1)の側面部(1b)の内面と前記他方の部材(2)の側面部(2b)の外面との間に間隙(8)が設定され、前記一方の部材(1)の側面部(1b)の内面および前記他方の部材(2)の側面部(2b)の外面のいずれか一方に固定されたガスケット(4)が他方に密接することを特徴とする電磁シールド構造。
The electromagnetic shield structure according to claim 1,
The two members are: one member (1) integrally having a top surface portion (1a) and a side surface portion (1b), and the other member (2) integrally having a bottom surface portion (2a) and a side surface portion (2b). A combination of
The side surface portion (2b) of the other member (2) is disposed inside the side surface portion (1b) of the one member (1), and the front end portion of the side surface portion (2b) of the other member (2). Is configured as a contact portion (6) that contacts the inner surface of the top surface portion (1a) of the one member (1), thereby forming a conductive portion (5),
A gap (8) is set between the inner surface of the side surface (1b) of the one member (1) and the outer surface of the side surface (2b) of the other member (2), and the one member (1) An electromagnetic shield structure characterized in that a gasket (4) fixed to either the inner surface of the side surface portion (1b) or the outer surface of the side surface portion (2b) of the other member (2) is in close contact with the other.
請求項5または6の電磁シールド構造において、
一方の部材は、HDD等の記憶装置の筐体の一方をなすトップカバー(1)であり、他方の部材は、同じくHDD等の記憶装置の筐体の他方をなすベース(2)であることを特徴とする電磁シールド構造。
The electromagnetic shield structure according to claim 5 or 6,
One member is a top cover (1) that forms one side of a housing of a storage device such as an HDD, and the other member is a base (2) that also forms the other side of the housing of a storage device such as an HDD. Electromagnetic shield structure characterized by
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