JP2011016352A - 複合通気膜およびそれを用いた通気構造 - Google Patents
複合通気膜およびそれを用いた通気構造 Download PDFInfo
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- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
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- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
- B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
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- B29C66/112—Single lapped joints
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- B29C66/05—Particular design of joint configurations
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- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
- B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
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- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
- B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
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- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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Abstract
【解決手段】通気構造13は、通気用の開口部11hを有する樹脂部品11と、開口部11hを塞ぐように樹脂部品11に取り付けられた複合通気膜6とを備えている。複合通気膜6は、フッ素樹脂膜を含む本体部2と、本体部2に重ね合わされた超高分子量ポリエチレン多孔質シート3とを備えている。超高分子量ポリエチレン多孔質シート3は、黒色を有する。本体部2と超高分子量ポリエチレン多孔質シート3との間には、両者を一体化しているレーザー溶着部4が形成されている。
【選択図】図2
Description
フッ素樹脂膜を含む本体部と、
黒色を有し、前記本体部に重ね合わされた超高分子量ポリエチレン多孔質シートと、
前記本体部と前記超高分子量ポリエチレン多孔質シートとに介在することによって両者を一体化しているレーザー溶着部と、
を備えた、複合通気膜を提供する。
通気用の開口部を有する樹脂部品と、
前記開口部を塞ぐように前記樹脂部品に取り付けられた通気膜とを備え、
前記通気膜が、上記本発明の複合通気膜によって構成されている、通気構造を提供する。
図6Aおよび図6Bに示す通気構造23は、通気用の開口部21hを有する支持体21と、支持体21に取り付けられた複合通気膜6とを有する。つまり、通気構造23は、通気部材(通気栓)として構成されている。複合通気膜6は、図2を参照して説明したものであり、接着剤または粘着テープで支持体21に固定されている。なお、複合通気膜6と支持体21とがインサート成形によって一体化されていてもよい。支持体21が筐体そのものであってもよい。
図7に示す筐体201は、第1筐体部品11、第2筐体部品12および第1筐体部品11の開口部11hに取り付けられた通気部材33(通気構造)を備えている。第1筐体部品11の開口部11hへの通気部材33の取り付けは、接着剤や粘着テープを用いて行ってもよいし、熱溶着によって行ってもよい。通気部材33において、複合通気膜6と支持体31とはインサート成形によって一体化されている。変形例1および変形例2によると、通気部材23,33を製造した時点で非破壊試験(例えば耐水試験や目視観察)を行える利点がある。また、通気構造を設けるべき筐体の設計変更にも対応しやすい。また、通気部材23,33を筐体に取り付けるための方法を、接着剤や粘着テープの使用、溶着、熱かしめ等の種々の方法から選択できる。
図2に示す通気構造を製造した。まず、本体部2としてのフッ素樹脂膜2a(日東電工社製 テミッシュ(登録商標)NTF810A、厚さ0.3mm、φ13mm、不織布無し)と、UHMWPE多孔質シート3(日東電工社製 サンマップ(登録商標)LC−T、厚さ1.0mm、φ13mm)とを、図4Aおよび図4Bを参照して説明した方法でレーザー溶着し、複合通気膜6を得た。ただし、UHMWPE多孔質シート3には、予め黒色に着色したものを用いた。
サンプル1で得た複合通気膜6を用い、図6Aに示す通気栓(通気構造23)を作製した。この通気栓を第1筐体部品11の開口部11hに接着剤で固定した。
従来の通気膜(日東電工社製 テミッシュ(登録商標)NTF2131A−S06、厚さ0.17mm、φ13mm、片面に不織布有り)を第1筐体部品11に直接レーザー溶着した。
サンプル1〜3の通気構造に対して、高圧洗車試験を行った。高圧洗車試験とは、図16に示すように、通気構造に対して、0°、30°、60°および90°の各角度に配置したノズル80から水を噴射し、筐体への水の浸入の有無を調べる試験である。筐体の内部には、水を感知するウォーターフィーリングペーストを塗布した。そのペーストが緑から赤に変色した場合に、筐体内に水が入ったと判断した。ノズル80からの水の噴射条件は、以下の通りであった。
噴射圧:8MPa
水温 :80℃
時間(各角度):30秒
流量 :14リットル/分
サンプル1,2は、高圧洗車試験を経ても筐体の中に水が全く入っていなかった。一方、サンプル3は、筐体内に水が少し入った。
2a フッ素樹脂膜
3 UHMWPE多孔質シート
4 レーザー溶着部
6 複合通気膜
6g 外周部
11 第1筐体部品(樹脂部品)
11h 開口部
13,23,33 通気構造
200,201 筐体
Claims (7)
- フッ素樹脂膜を含む本体部と、
黒色を有し、前記本体部に重ね合わされた超高分子量ポリエチレン多孔質シートと、
前記本体部と前記超高分子量ポリエチレン多孔質シートとに介在することによって両者を一体化しているレーザー溶着部と、
を備えた、複合通気膜。 - 前記レーザー溶着部が、当該複合通気膜の外周部における、前記本体部と前記超高分子量ポリエチレン多孔質シートとの間に形成されており、平面視で環形状を有する、請求項1に記載の複合通気膜。
- 前記本体部の厚さt1と前記超高分子量ポリエチレン多孔質シートの厚さt2とが、t1<t2の関係を満たす、請求項1または2に記載の複合通気膜。
- 前記本体部が、前記フッ素樹脂膜だけで構成されている、請求項1〜3のいずれか1項に記載の複合通気膜。
- 通気用の開口部を有する樹脂部品と、
前記開口部を塞ぐように前記樹脂部品に取り付けられた通気膜とを備え、
前記通気膜が、請求項1〜4のいずれか1項に記載の複合通気膜によって構成されている、通気構造。 - 前記複合通気膜の外周部が前記樹脂部品に埋め込まれている、請求項5に記載の通気構造。
- 前記樹脂部品に埋め込まれた前記外周部にのみ前記レーザー溶着部が形成されている、請求項6に記載の通気構造。
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KR20120052226A (ko) | 2012-05-23 |
CN102803022A (zh) | 2012-11-28 |
EP2441625A4 (en) | 2013-03-27 |
JP5450273B2 (ja) | 2014-03-26 |
EP2441625A1 (en) | 2012-04-18 |
US20120114902A1 (en) | 2012-05-10 |
WO2010143437A1 (ja) | 2010-12-16 |
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