JP2010199306A - Gasket - Google Patents
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- JP2010199306A JP2010199306A JP2009042680A JP2009042680A JP2010199306A JP 2010199306 A JP2010199306 A JP 2010199306A JP 2009042680 A JP2009042680 A JP 2009042680A JP 2009042680 A JP2009042680 A JP 2009042680A JP 2010199306 A JP2010199306 A JP 2010199306A
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Abstract
Description
本発明は、ガスケットの技術分野に属する。 The present invention belongs to the technical field of gaskets.
ＥＭＩ（電磁干渉ないし電磁障害）またはＲＦＩ（電波障害）の対策のため、コンピュータやその周辺機器などの電子機器の金属筐体のスライド部分の隙間には、Ｌ字形、Ｖ字形、楔形などの異形プロファイルの電磁波シールド性のガスケットを設置することが行われている。 For countermeasures against EMI (electromagnetic interference or electromagnetic interference) or RFI (radio frequency interference), the gaps in the sliding part of the metal casing of electronic devices such as computers and peripheral devices are deformed, such as L-shaped, V-shaped and wedge-shaped. Installation of a profile electromagnetic shielding gasket has been carried out.
そうした異形プロファイルの電磁波シールド性のガスケットの製法として、米国特許第４８５７６６８号には、銀コートナイロン織布などの導電性織布を金型に挿入して空洞を作りつつ、その空洞に発泡性原料を充填しながら発泡させていくことにより連続的に電磁波シールド性ガスケットを製造する方法が開示されている。 US Pat. No. 4,857,668 discloses a method for producing an electromagnetic wave shielding gasket having such a profile, in which a conductive woven fabric such as a silver-coated nylon woven fabric is inserted into a mold to form a cavity, and a foamable raw material is formed in the cavity. A method for continuously producing an electromagnetic shielding gasket by foaming while filling is disclosed.
また、特開平９−２２３８８６号公報には、導電性外被(1) 、適度の剛性を有するプラスチックステープ(2)、断面視でほぼ矩形の紐状スポンジ体(3) を用い、片面に接着剤層(ad)を形成した導電性外被(1) の接着剤層(ad)側の面にプラスチックステープ(2)と紐状スポンジ体(3) とを組み合わせで異形プロファイルとなし、それを導電性外被(1)で覆うように被覆接着してその異形プロファイルを固定する方法が開示されている。 Japanese Patent Laid-Open No. 9-223886 uses a conductive jacket (1), a plastic tape (2) having an appropriate rigidity, and a substantially rectangular string-like sponge body (3) in cross-section, and is bonded to one side. A plastic profile (2) and a string-like sponge body (3) are combined on the surface of the conductive envelope (1) on which the adhesive layer (ad) is formed to form an irregular profile. A method is disclosed in which a deformed profile is fixed by covering and adhering so as to cover with a conductive jacket (1).
特許文献１に開示の製法は、導電性織布を金型に挿入して空洞を作りつつ、そこに発泡性原料を充填しながら発泡させていくことにより連続的にガスケットを製造するので、生産性が高いものの、寸法精度が劣るという問題があり、電子機器の金属筐体のスライド部分の隙間に設置して電磁波シールドを図るような目的に用いる場合に信頼性に不安があった。 The manufacturing method disclosed in Patent Document 1 is a production process because a gasket is continuously produced by inserting a conductive woven fabric into a mold to create a cavity and filling it with foaming raw material to foam. Although it is highly reliable, there is a problem that the dimensional accuracy is inferior, and there is concern about reliability when it is used for the purpose of shielding electromagnetic waves by installing it in the gap of the slide part of the metal casing of the electronic device.
一方、特許文献２の製法で製造される、例えばＬ字形状のガスケットは、Ｌ字のコーナー部における２つの部材の連結が強固でないため、スライド部分に使用したときにコーナー部で支点がずれて所期の圧縮抵抗が得られないおそれがある等、２つの部材の連結が強固でないことによる不具合があった。 On the other hand, for example, an L-shaped gasket manufactured by the manufacturing method of Patent Document 2 is not strong in the connection of two members at the L-shaped corner portion, so that the fulcrum shifts at the corner portion when used for a slide portion. There is a problem that the connection between the two members is not strong, for example, the desired compression resistance may not be obtained.
請求項１記載のガスケットは、
断面形状が矩形の柱状体である弾性発泡体を母材となし、前記母材の１側面からこれと対向する対側面に向かって切り込み、ただし切断には至らずに前記対側面側に不断部を残し、該切り込みによって形成された一対の切開面間を前記不断部が支点となる形態で開いて形成される弾性心材と、
前記弾性心材の前記母材では側面であった各面と前記切開面とを覆って
前記弾性心材に被着された導電性外皮と
を備えることを特徴とする。
The gasket according to claim 1,
An elastic foam, which is a columnar body having a rectangular cross-sectional shape, is used as a base material, and is cut from one side surface of the base material toward the opposite side surface, but without being cut, the continuous portion is formed on the opposite side side. An elastic core material that is formed by opening the pair of cut surfaces formed by the incision in a form in which the indefinite portion serves as a fulcrum,
The base material of the elastic core material includes a conductive outer skin that covers each surface that is a side surface of the base material and the incision surface and is attached to the elastic core material.
請求項１記載のガスケットにおいては、弾性心材は、断面形状が矩形の柱状体である弾性発泡体を母材となし、前記母材の１側面からこれと対向する対側面に向かって切り込み、ただし切断には至らずに前記対側面側に不断部を残し、該切り込みによって形成された一対の切開面間を前記不断部が支点となる形態で開いて形成される。導電性外皮は、その弾性心材の前記母材では側面であった各面と前記切開面とを覆って前記弾性心材に被着される。 In the gasket according to claim 1, the elastic core material is made of an elastic foam having a columnar body having a rectangular cross-sectional shape as a base material, and is cut from one side surface of the base material toward the opposite side surface. It is formed by leaving a continuous portion on the opposite side without cutting, and opening a pair of cut surfaces formed by the cut with the continuous portion serving as a fulcrum. The conductive outer skin is attached to the elastic core material so as to cover each surface which is a side surface of the base material of the elastic core material and the cut surface.
こうした構成であるので、特に弾性心材の母材を切断加工にて製造でき、その母材に対する加工も刃物による切り込みでなされるので、寸法精度を高くできる。 また、弾性心材には不断部が残されていて、これが支点となる形態になっているので、例えばスライド部分に使用したときにコーナー部で支点がずれて所期の圧縮抵抗が得られない等の不具合は発生せず、２つの部材を連結した場合の強度の問題を解決できる。 Since it is such a structure, since the base material of an elastic core material can be especially manufactured by a cutting process, and the process with respect to the base material is also made by the cutting with a blade, dimensional accuracy can be made high. In addition, the elastic core material has an unbroken part, which is a form that serves as a fulcrum.For example, when used for a slide part, the fulcrum shifts at the corner part and the desired compression resistance cannot be obtained. Therefore, the problem of strength when two members are connected can be solved.
母材となる弾性発泡体としては、ポリウレタン、シリコーン、ネオプレンゴム、ＥＰＤＭをはじめとするスポンジ状の弾力性を有する発泡体を使用できる。 As the elastic foam used as a base material, foam having elasticity like a sponge, such as polyurethane, silicone, neoprene rubber, EPDM can be used.
導電性外被としては、導電性布状物（織布、編布、不織布）が好適に用いられ、アルミニウム箔などの金属箔を用いることもできる。金属箔の場合には、片面に合成樹脂フィルムをラミネートすることが好ましい。このうち導電性布状物としては、金属細線（モネル、カッパーウェルド、アルミニウム、スズメッキ銅等）あるいは金属コート繊維（合成繊維にメッキ、蒸着、スパッタリング等の手段により金属コートした繊維）からなるマルチフィラメント糸またはモノフィラメント糸を編織等したもの、合成繊維糸を用いて編織等した布状物に金属コート（メッキ、蒸着、スパッタリング等）や導電性樹脂コートを施したものなどがあげられる。 As the conductive jacket, a conductive cloth (woven fabric, knitted fabric, non-woven fabric) is preferably used, and a metal foil such as an aluminum foil can also be used. In the case of a metal foil, it is preferable to laminate a synthetic resin film on one side. Among these, the conductive cloth-like material is a multifilament made of fine metal wires (monel, copper weld, aluminum, tin-plated copper, etc.) or metal-coated fibers (fibers coated with synthetic fibers by means of plating, vapor deposition, sputtering, etc.). Examples thereof include those obtained by knitting yarn or monofilament yarn, and those obtained by applying metal coating (plating, vapor deposition, sputtering, etc.) or conductive resin coating to a cloth-like material knitted using synthetic fiber yarn.
切り込みによって形成された一対の切開面間を前記不断部が支点となる形態で開いて形成される弾性心材は、その断面形状が前記切開面間の開き角度に従って変化することになる。 The elastic core material formed by opening the pair of incision surfaces formed by the incision with the uncut portion serving as a fulcrum changes the cross-sectional shape according to the opening angle between the incision surfaces.
具体的には、請求項２に記載のように前記切開面間の開き角度が９０度未満であれば断面視がＶ字形ないしＬ字形のガスケットとなり、請求項４に記載のように前記切開面間の開き角度が２７０度を上回る場合も断面視がＶ字形ないしＬ字形のガスケットとなり、請求項３に記載のように、前記切開面間の開き角度が１８０度であれば、断面視が板状のガスケットとなる。また、請求項５記載のように、前記切開面間の開き角度が１８０度を上回り２７０度未満であれば、断面視が「く」の字状（鈍角）のガスケットとなる。 Specifically, if the opening angle between the cut surfaces is less than 90 degrees as described in claim 2, the cross-sectional view becomes a V-shaped or L-shaped gasket, and the cut surfaces as described in claim 4 The cross-sectional view is a V-shaped or L-shaped gasket even when the opening angle between the cut surfaces exceeds 270 degrees, and if the opening angle between the cut surfaces is 180 degrees as in claim 3, the cross-sectional view is a plate. It becomes a shaped gasket. Further, as described in claim 5, when the opening angle between the cut surfaces is more than 180 degrees and less than 270 degrees, a gasket having a cross-section (oblique angle) is obtained.
なお、弾性心材（母材）はポリウレタン発泡体等の弾性発泡体であるから、前記切開面間の開き角度を数学的に規定するのは実質不可能である。従って、請求項２〜５等でいう角度は設計値であって、実際の製品においてそうした角度が実現されることまでは要求されない。また、同様の理由から、母材の「断面形状が矩形」であるとの規定も、そのように設計されていることを意味する。 Since the elastic core material (base material) is an elastic foam such as a polyurethane foam, it is virtually impossible to mathematically define the opening angle between the cut surfaces. Therefore, the angles referred to in claims 2 to 5 and the like are design values and are not required until such angles are realized in actual products. For the same reason, the definition that the cross-sectional shape of the base material is rectangular means that the base material is designed as such.
請求項２〜５に記載のガスケットには、上記の開き角度が異なることにより次のような機能的な差異がある。 The gaskets according to claims 2 to 5 have the following functional differences due to the different opening angles.
まず、請求項２に記載のガスケットは、前記切開面間の開き角度が９０度未満であることを特徴とする請求項１記載のガスケットであるので、切開面間の開き角度を小さくする方向の力に対する反発力が相対的に小さくなる。すなわち、柔軟タイプのガスケットになる。 The gasket according to claim 2 is the gasket according to claim 1, wherein the opening angle between the cut surfaces is less than 90 degrees. Repulsive force against force is relatively small. That is, it becomes a flexible type gasket.
次に、請求項３に記載のガスケットは、前記切開面間の開き角度が１８０度であることを特徴とする請求項１記載のガスケットであるので、断面視が長方形状で、全体の形状としては板状のガスケットとなる。その板状のガスケットには、切開面間の開きを閉じる方向の内部応力（山状又は谷状になろうとする力）が存在するので、圧縮抵抗が安定したガスケットになる。 Next, the gasket according to claim 3 is the gasket according to claim 1, wherein an opening angle between the cut surfaces is 180 degrees. Becomes a plate-like gasket. Since the plate-like gasket has an internal stress (force to make it into a mountain shape or a valley shape) in a direction to close the opening between the cut surfaces, the gasket has a stable compression resistance.
そして、請求項４に記載のガスケットは、前記切開面間の開き角度が２７０度を上回ることを特徴とする請求項１記載のガスケットである。請求項４のガスケットは、形状的には請求項２のガスケットと同様になるが、請求項２のガスケットとは逆に弾性心材のばね性が高く、高反発力のガスケットになる。 And the gasket of Claim 4 is a gasket of Claim 1 characterized by the opening angle between the said cut surfaces exceeding 270 degree | times. The gasket of claim 4 is similar in shape to the gasket of claim 2, but, contrary to the gasket of claim 2, the elastic core material has a high spring property and becomes a gasket with high repulsive force.
なお、請求項２又は４に記載のガスケットは断面視がＶ字形ないしＬ字形のガスケットであるから、弾性心材の底面部分（Ｌ字の横辺に相当する部分）に、その底面部分が曲がらない程度の補強板を設けることで底面部分の導電性外被と筐体等との接触を安定させることができ、安定した導通を確保できる。 Since the gasket according to claim 2 or 4 is a gasket having a V-shaped or L-shaped cross-sectional view, the bottom surface portion of the elastic core material (the portion corresponding to the lateral side of the L shape) is not bent. By providing a reinforcing plate of a certain degree, the contact between the conductive jacket on the bottom surface portion and the housing can be stabilized, and stable conduction can be ensured.
請求項５に記載のガスケットは、前記切開面間の開き角度が１８０度を上回り２７０度未満であることを特徴とする請求項１記載のガスケットである。この形態のガスケットは、２つの平板部の一方を壁面等に固定して他方を傾斜板として突き出すような態様で使用するのに適している。 The gasket according to claim 5 is the gasket according to claim 1, wherein an opening angle between the cut surfaces is more than 180 degrees and less than 270 degrees. This form of gasket is suitable for use in such a manner that one of the two flat plate portions is fixed to a wall surface or the like and the other is projected as an inclined plate.
次に、本発明の実施例等により発明の実施の形態を説明する。なお、本発明は下記の実施例等に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でさまざまに実施できることは言うまでもない。
［実施例１］
本発明によるガスケットを製造するにあたっては、ブロック状またはシート状の弾性発泡体に切断加工を施して、断面形状が矩形の柱状体とする。なお、このように加工された柱状体を購入してもよい。これを母材１となし、図１に示すように、母材１の１つの側面２からこれと対向する対側面３に向かってスリット４を切り込む。ただし母材１を２つに切断するのではなく、対側面３側に不断部５を残しておく。スリット４の深さ（ｄ）及び幅位置（ｗ）は製品形状に従って任意に決定できる。
Next, embodiments of the present invention will be described based on examples of the present invention. The present invention is not limited to the following examples and the like, and it goes without saying that the present invention can be implemented in various ways without departing from the gist of the present invention.
[Example 1]
In manufacturing the gasket according to the present invention, a block-like or sheet-like elastic foam is cut to form a columnar body having a rectangular cross-sectional shape. In addition, you may purchase the columnar body processed in this way. This is made into the base material 1, and as shown in FIG. 1, the slit 4 is cut from the one side surface 2 of the base material 1 toward the opposite side surface 3 facing this. However, the base material 1 is not cut into two, but the unbroken portion 5 is left on the opposite side 3 side. The depth (d) and width position (w) of the slit 4 can be arbitrarily determined according to the product shape.
そうした母材１を複数本、図２に示すように各端面にてつなぎ合わせて長尺にする。 A plurality of such base materials 1 are joined together at each end face as shown in FIG.
そして、図３に示すように、スリット４の切り込みによって形成された一対の切開面６、６間を不断部５が支点となる形態で開いて弾性心材７とする。なお、このときに不断部５に荷重がかかるために、不断部５は圧縮変形させられる。本実施例の場合、切開面６、６間の開き角度が９０度未満であるので、弾性心材７の断面視がＶないしＬ字形になる。 Then, as shown in FIG. 3, an elastic core material 7 is formed by opening a pair of incision surfaces 6 and 6 formed by cutting the slit 4 in a form in which the indefinite portion 5 serves as a fulcrum. At this time, since the load is applied to the continuous part 5, the continuous part 5 is compressed and deformed. In the case of the present embodiment, since the opening angle between the cut surfaces 6 and 6 is less than 90 degrees, the cross-sectional view of the elastic core material 7 is V or L-shaped.
その弾性心材７の外周（母材１では側面であった各面と切開面６、６）を覆って、導電性外皮８を被着してガスケット１０とする。本実施例では導電性外皮８と弾性心材７の表面との間に粘着層９を設けて、導電性外皮８を弾性心材７に粘着させている。 A gasket 10 is formed by covering the outer periphery of the elastic core material 7 (the respective surfaces and the cut surfaces 6 and 6 which were side surfaces in the base material 1) and the conductive outer skin 8. In this embodiment, an adhesive layer 9 is provided between the conductive outer skin 8 and the surface of the elastic core material 7 so that the conductive outer skin 8 is adhered to the elastic core material 7.
本実施例のガスケット１０は、上記の通りの構成であるので、特に弾性心材７の母材１を切断加工にて製造でき、その母材１に対する加工も刃物による切り込みでなされるので、寸法精度を高くできる。 Since the gasket 10 of the present embodiment is configured as described above, the base material 1 of the elastic core material 7 can be manufactured by cutting, and the base material 1 is also processed by cutting with a blade. Can be high.
しかも、弾性心材７には不断部５が残されていて、これが支点となる形態になっているので、例えばスライド部分に使用したときに支点がずれて所期の圧縮抵抗が得られない等の不具合は発生しない。 In addition, the elastic core material 7 has the unrestricted portion 5 that is a fulcrum, so that, for example, the fulcrum shifts when used for the slide portion, and the desired compression resistance cannot be obtained. There is no problem.
また、このガスケット１０は、切開面６、６間の開き角度が９０度未満であるので、切開面６、６間の開き角度を小さくする方向の力に対する反発力が相対的に小さくなる（柔軟タイプになる）。 Further, since the opening angle between the cut surfaces 6 and 6 is less than 90 degrees, the gasket 10 has a relatively small repulsive force against the force in the direction of reducing the open angle between the cut surfaces 6 and 6 (flexible). Type).
なお、反発力はスリット４の切り込みの深さによって調節することが可能である。この点は、実施例２以下の構成においても同様である。
［実施例２］
切開面６、６間の開き角度を１８０度に設定した例を実施例２として図４に示す。
The repulsive force can be adjusted by the depth of the slit 4. This also applies to the configurations of the second and subsequent embodiments.
[Example 2]
An example in which the opening angle between the cut surfaces 6 and 6 is set to 180 degrees is shown in FIG.
実施例２のガスケット２０は、切開面６、６間の開き角度を１８０度にしたので、断面視が長方形状となり、全体の形状としては板状のガスケット２０となる。なお、開き角度を１８０度にした点以外は実施例１と同様であるので、それらの説明は省略する。 Since the opening angle between the cut surfaces 6 and 6 is 180 degrees, the gasket 20 of the second embodiment has a rectangular shape in cross-sectional view, and the overall shape is a plate-like gasket 20. In addition, since it is the same as that of Example 1 except the point which made the opening angle 180 degrees, those description is abbreviate | omitted.
この板状のガスケット２０には、切開面６、６間の開きを閉じる方向の内部応力（山状又は谷状になろうとする力）が存在するので、圧縮抵抗が安定したガスケットになる。その他、実施例１と同様に寸法精度を高くでき、所期の圧縮抵抗が得られるという効果がある。
［実施例３］
切開面６、６間の開き角度を２７０度超に設定した例を実施例３として図５に示す。
The plate-like gasket 20 has an internal stress in a direction in which the opening between the cut surfaces 6 and 6 is closed (force that tends to be a mountain shape or a valley shape), so that the compression resistance is stable. In addition, the dimensional accuracy can be increased similarly to the first embodiment, and the desired compression resistance can be obtained.
[Example 3]
An example in which the opening angle between the cut surfaces 6 and 6 is set to be over 270 degrees is shown in FIG.
実施例３のガスケット３０は、切開面６、６間の開き角度を２７０度超にしたので、断面視は実施例１と同様のＬ字形になっている。但し、切開面６、６間の開き角度を２７０度超にしている構造から明らかなとおり、実施例１のガスケット１０とは逆に弾性心材のばね性が高く、高反発力のガスケット３０になる。その他、実施例１と同様に寸法精度を高くでき、所期の圧縮抵抗が得られるという効果がある。
［実施例４］
切開面６、６間の開き角度を１８０度超で２７０度未満に設定した例を実施例３として図６に示す。
In the gasket 30 of the third embodiment, the opening angle between the cut surfaces 6 and 6 is more than 270 degrees, so that the sectional view has an L shape similar to that of the first embodiment. However, as is apparent from the structure in which the opening angle between the cut surfaces 6 and 6 is more than 270 degrees, the elastic core material has a high spring property and has a high repulsive force, contrary to the gasket 10 of the first embodiment. . In addition, the dimensional accuracy can be increased similarly to the first embodiment, and the desired compression resistance can be obtained.
[Example 4]
An example in which the opening angle between the cut surfaces 6 and 6 is set to be more than 180 degrees and less than 270 degrees is shown in FIG.
実施例４のガスケット４０は、切開面６、６間の開き角度を１８０度超で２７０度未満（本例では２３５度）にしたので、断面視は「く」の字形になっている。
但し、切開面６、６間の開き角度を１８０度超で２７０度未満にしている構造から明らかなとおり、実施例３のガスケット１０よりは弾性心材のばね性が低く、ガスケット１０より低反発力のガスケット４０になる。その他、実施例１と同様に寸法精度を高くでき、所期の圧縮抵抗が得られるという効果がある。
Since the opening angle between the cut surfaces 6 and 6 is more than 180 degrees and less than 270 degrees (in this example, 235 degrees), the gasket 40 of Example 4 has a “<” shape in cross section.
However, as is clear from the structure in which the opening angle between the cut surfaces 6 and 6 is more than 180 degrees and less than 270 degrees, the elastic core material has a lower spring property than the gasket 10 of Example 3 and has a lower repulsive force than the gasket 10. The gasket 40 becomes. In addition, the dimensional accuracy can be increased similarly to the first embodiment, and the desired compression resistance can be obtained.
なお、実施例４のガスケット４０は、図６（ｅ）に示すように、例えばボルト１２を用いて壁面１３等に取り付けて使用される。その場合、図示するように平板部１４ａ、１４ｂの一方が固定され、他方は傾斜板（１４ｂ）として突き出すような態様とされ、その傾斜板（１４ｂ）の先端部を蓋１５等をスライドさせる用途に適している。
［両面粘着テープの使用例］
実施例１〜４のガスケット１０、２０、３０、４０は、例えば両面粘着テープを用いて使用場所に取り付けられるが、実施例１のガスケット１０は（実施例３のガスケット３０も）、図７（ａ）に示すように、スライド部分に使用する場合にはＬ字の外面に両面粘着テープ１１を貼り付け、図７（ｂ）に示すように、コーナー部の外面に装着する場合にはＬ字の内面に両面粘着テープ１１を貼り付ける。
In addition, the gasket 40 of Example 4 is used by attaching to the wall surface 13 etc. using the volt | bolt 12, for example, as shown in FIG.6 (e). In that case, as shown in the figure, one of the flat plate portions 14a and 14b is fixed and the other is projected as an inclined plate (14b), and the end of the inclined plate (14b) is used for sliding the lid 15 or the like. Suitable for
[Usage example of double-sided adhesive tape]
The gaskets 10, 20, 30, and 40 of Examples 1 to 4 are attached to the place of use using, for example, a double-sided adhesive tape, but the gasket 10 of Example 1 (also the gasket 30 of Example 3) is shown in FIG. As shown to a), when using for a slide part, the double-sided adhesive tape 11 is affixed on the outer surface of L shape, and when attaching to the outer surface of a corner part as shown in FIG.7 (b), it is L character. A double-sided pressure-sensitive adhesive tape 11 is affixed to the inner surface.
なお、ここに例示した以外の設置位置や形態での使用も可能であるから、両面粘着テープの貼り付け位置はそうした使用形態等に応じて選択すればよい。
［高密度部分］
実施例１〜４のガスケット１０、２０、３０、４０は、上述したように製造されるので、内部に高密度の部分と低密度の部分が形成される。例えば実施例２のガスケット２０の場合は、図８（ａ）、（ｂ）に示すように中央部（対側面３であった部分の周囲）に高密度部分ＨＤが形成され、その両側は低密度部分ＬＤとなる。また、実施例３のガスケット３０の場合は、コーナー部分に高密度部分ＨＤが形成され、その両側は低密度部分ＬＤとなる。
In addition, since use in installation positions and forms other than those exemplified here is possible, the attachment position of the double-sided adhesive tape may be selected according to such use forms.
[High density part]
Since the gaskets 10, 20, 30, and 40 of Examples 1 to 4 are manufactured as described above, a high-density portion and a low-density portion are formed inside. For example, in the case of the gasket 20 of the second embodiment, as shown in FIGS. 8A and 8B, a high-density portion HD is formed in the central portion (around the portion that was the opposite side 3), and both sides are low. It becomes a density portion LD. Moreover, in the case of the gasket 30 of Example 3, the high density part HD is formed in a corner part, and the both sides become the low density part LD.
こうした高密度部分ＨＤは、片面からの圧迫力を低密度部分ＬＤよりも効率よく他面側に伝達するので、両面粘着テープ１１を用いてガスケット１０、２０、３０、４０を使用場所に取り付ける際に、両面粘着テープ１１を高密度部分ＨＤに対応した位置に配置するとよい。そうすると両面粘着テープ１１を、より確実に使用場所に粘着させることができるので、ガスケット１０、２０、３０、４０の取り付けも確実になり信頼性が高まる。 Such a high-density portion HD transmits the compression force from one side to the other side more efficiently than the low-density portion LD. Therefore, when the gasket 10, 20, 30, 40 is attached to the place of use using the double-sided adhesive tape 11 In addition, the double-sided adhesive tape 11 may be disposed at a position corresponding to the high density portion HD. As a result, the double-sided pressure-sensitive adhesive tape 11 can be more reliably adhered to the place of use, so that the gaskets 10, 20, 30, and 40 can be securely attached and the reliability can be improved.
また、実施例２のガスケット２０は、その製法から当然ではあるが、図８（ａ）に示すような平板状というよりも、普通は図８（ｂ）に示すように幾分反った形状になる。なお、言うまでもないことではあるが、図８（ａ）に示すような平板状に製造することも可能である。図８（ｂ）に示すように幾分反った形状のガスケット２０であれば、高密度部分ＨＤに対応した位置（すなわち中央部）に両面粘着テープ１１を配置して、取り付け相手（例えば筐体）に貼り付けたときに、反り（その原因である反発力）により両方の端部１７が筐体の表面に確実に接触する。従って、端部１７を接点として安定したグランド効果を得ることができる。 Further, the gasket 20 of Example 2 naturally has a slightly warped shape as shown in FIG. 8B rather than a flat plate shape as shown in FIG. Become. Needless to say, it is also possible to manufacture a flat plate as shown in FIG. If the gasket 20 has a slightly warped shape as shown in FIG. 8B, the double-sided pressure-sensitive adhesive tape 11 is disposed at a position corresponding to the high-density portion HD (that is, the central portion), and the mounting partner (for example, a housing) ), Both end portions 17 are surely brought into contact with the surface of the casing due to warpage (repulsive force that is the cause). Therefore, a stable ground effect can be obtained using the end portion 17 as a contact point.
１・・・母材、
２・・・側面、
３・・・対側面、
４・・・スリット、
５・・・不断部、
６・・・切開面、
７・・・弾性心材、
８・・・導電性外皮、
９・・・粘着層、
１０、２０、３０、４０・・・ガスケット、
１１・・・両面粘着テープ。
1 ... base material,
2 ... side,
3 ... opposite side,
4 ... Slit,
5 ... Continuous part,
6 ... incision surface,
7 ... elastic core material,
8 ... conductive skin,
9: Adhesive layer,
10, 20, 30, 40 ... gasket,
11: Double-sided adhesive tape.
Claims (5)
前記弾性心材の前記母材では側面であった各面と前記切開面とを覆って
前記弾性心材に被着された導電性外皮と
を備えることを特徴とするガスケット。 An elastic foam, which is a columnar body having a rectangular cross-sectional shape, is used as a base material, and is cut from one side surface of the base material toward the opposite side surface, but without being cut, the continuous portion is formed on the opposite side side. An elastic core material that is formed by opening the pair of cut surfaces formed by the incision in a form in which the indefinite portion serves as a fulcrum,
A gasket comprising: a surface of the base material of the elastic core material that is a side surface; and a conductive outer skin that covers the cut surface and is attached to the elastic core material.
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| JP2009042680A JP5360552B2 (en) | 2009-02-25 | 2009-02-25 | gasket |
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| JP2009042680A JP5360552B2 (en) | 2009-02-25 | 2009-02-25 | gasket |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2485780A (en) * | 2010-11-23 | 2012-05-30 | Cp Cases Ltd | Port for cable entry into chassis providing EMI suppression and comprising a compressible conducting seal with a slit |
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| JPH09223886A (en) * | 1996-02-14 | 1997-08-26 | Nippon Jitsupaa Chiyuubingu Kk | Manufacture of electromagnetic wave shielding continuity material of modified profile |
| JPH1154980A (en) * | 1997-07-30 | 1999-02-26 | Seiwa Electric Mfg Co Ltd | Electromagnetic wave shielding gasket and its manufacture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2485780A (en) * | 2010-11-23 | 2012-05-30 | Cp Cases Ltd | Port for cable entry into chassis providing EMI suppression and comprising a compressible conducting seal with a slit |
| GB2485780B (en) * | 2010-11-23 | 2014-10-08 | Cp Cases Ltd | Port |
| US8969738B2 (en) | 2010-11-23 | 2015-03-03 | Cp Cases Ltd | Port for inhibiting electromagnetic radiation |
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