JP4049443B2 - Glass panel - Google Patents

Glass panel Download PDF

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Publication number
JP4049443B2
JP4049443B2 JP12120398A JP12120398A JP4049443B2 JP 4049443 B2 JP4049443 B2 JP 4049443B2 JP 12120398 A JP12120398 A JP 12120398A JP 12120398 A JP12120398 A JP 12120398A JP 4049443 B2 JP4049443 B2 JP 4049443B2
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Japan
Prior art keywords
cap
glass
inclined surface
suction port
glass panel
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Expired - Lifetime
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JP12120398A
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Japanese (ja)
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JPH11311069A (en
Inventor
貴伸 榎本
道廣 加藤
重樹 森
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Nippon Sheet Glass Co Ltd
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Nippon Sheet Glass Co Ltd
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Publication date
Application filed by Nippon Sheet Glass Co Ltd filed Critical Nippon Sheet Glass Co Ltd
Priority to JP12120398A priority Critical patent/JP4049443B2/en
Priority to CN99800652A priority patent/CN1117912C/en
Priority to KR1019997009373A priority patent/KR100326089B1/en
Priority to PCT/JP1999/002230 priority patent/WO1999057405A1/en
Priority to TW088107070A priority patent/TW405013B/en
Publication of JPH11311069A publication Critical patent/JPH11311069A/en
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Publication of JP4049443B2 publication Critical patent/JP4049443B2/en
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    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663Elements for spacing panes
    • E06B3/66304Discrete spacing elements, e.g. for evacuated glazing units
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06Joining glass to glass by processes other than fusing
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66Units comprising two or more parallel glass or like panes permanently secured together
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/677Evacuating or filling the gap between the panes ; Equilibration of inside and outside pressure; Preventing condensation in the gap between the panes; Cleaning the gap between the panes
    • E06B3/6775Evacuating or filling the gap during assembly
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/24Structural elements or technologies for improving thermal insulation
    • Y02A30/249Glazing, e.g. vacuum glazing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/22Glazing, e.g. vaccum glazing

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Closures For Containers (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、一対の板ガラスを、厚み方向に間隔をあけて配置すると共に、前記両板ガラス間の空隙部を密閉減圧してあるガラスパネル本体を設け、前記一対の板ガラスのうちの何れか一方の板ガラスに、前記空隙部の減圧を行った後の吸引口閉塞部を、板ガラス表面に突出状態に設けて吸引部を形成し、前記吸引口閉塞部を保護するためのキャップを、前記吸引部を覆う状態に前記一方の板ガラスへ接着してあるガラスパネルに関する。
【0002】
【従来の技術】
一枚の板ガラスより断熱性能の高い板ガラスとして、一対の板ガラスの間に断熱層となる空気層を介在させて一体的に構成してある複層ガラスが知られているが、この種のガラスパネルにおいては、そのものの厚みが大きくなり、サッシュを含めて美観性を損ない易い問題がある。そこで、厚みが薄くてより断熱性が高いものとして、一対の板ガラス間に複数のスペーサを配置すると共に、両板ガラス夫々の外縁部間に、全周にわたって、例えば、低融点ガラス製の封止部材を一体的に設け、前記空隙部を減圧状態とすることで、より薄く、且つ、熱貫流率の小さなガラスパネルとすることが考えられている。
そして、前記空隙部を減圧状態にするについては、予め、一対の板ガラスのうちの何れか一方の板ガラスに、吸引用のガラス管を設けておき、そのガラス管を使用して前記空隙部の減圧を行うもので、前記空隙部の減圧状態を維持するためには、前記ガラス管の先端部を熱によって融解させることで、信頼性の高い吸引口閉塞部とするものである。しかし、前記吸引口閉塞部が露出したままになっていると、他物が当たった際に割れて、前記空隙部の減圧状態が解除される危険性があるから、前記キャップが必要となるわけである。
この種の従来のガラスパネルとしては、図7に示すように、前記キャップ20は、外観円柱形状に形成し、且つ、前記吸引口閉塞部7にきっちりはまるように前記吸引口閉塞部寸法に対応した嵌合用穴部21を設け、前記穴部21の開口周縁部に接着剤13を塗布した状態で、前記吸引口閉塞部7に被せて一方の板ガラス1Aに接着することが考えられていた。
【0003】
【発明が解決しようとする課題】
上述した従来のガラスパネルによれば、他物がキャップ設置部分に当たった場合、特に、板ガラス面に沿った方向で他物が当たると、その衝撃は、板ガラスとの接着層で受け止められるが、それと同時に吸引口閉塞部にも伝達され、前記吸引口閉塞部が破損し易く、前記空隙部の減圧状態の維持が困難になり易いという問題点がある。前記他物からの外力が、板ガラス面に沿った方向に作用するときが、特に、衝撃をまともに受け易いことから破損する危険性が高い。
【0004】
従って、本発明の目的は、上記問題点を解消し、キャップ部分に外力が作用しても、吸引口閉塞部が破損し難く、長期間にわたって空隙部の減圧状態を維持し易いガラスパネルを提供するところにある。
【0005】
【課題を解決するための手段】
〔構成〕
請求項1に係わる本発明の特徴構成は、図2〜6に例示するごとく、一対の板ガラス1を、厚み方向に間隔をあけて配置すると共に、前記両板ガラス1間の空隙部Vを密閉減圧してあるガラスパネル本体P1を設け、前記一対の板ガラス1のうちの何れか一方の板ガラス1Aに、前記空隙部Vの減圧を行った後の吸引口閉塞部7を、板ガラス表面に突出状態に設けて吸引部6を形成し、前記吸引口閉塞部7を保護するためのキャップ9を、前記吸引部6を覆う状態に前記一方の板ガラス1Aへ接着してあるガラスパネルにおいて、前記キャップ9の外周部に、先細り形状の第一傾斜面10を形成すると共に、前記キャップ9の内空周壁部と前記吸引口閉塞部7との間に隙間Sを形成してあるところにある。
【0006】
請求項2に係わる本発明の特徴構成は、図2〜6に例示するごとく、前記キャップ9の内空周壁部のうち、前記吸引口閉塞部7の頭部と同じ高さに相当する部分から、キャップ基端側にかけての内空周壁部分に、末広がりの第二傾斜面12を形成してあるところにある。
【0007】
請求項3に係わる本発明の特徴構成は、図2〜6に例示するごとく、前記第一傾斜面10は、ガラス面に対して50度以下の傾斜角度に設定してあるところにある。
【0008】
請求項4に係わる本発明の特徴構成は、図2・3・4・6に例示するごとく、前記キャップ9の外周部のうち、前記第一傾斜面10よりキャップ基端側の部分は、その外径寸法を、前記第一傾斜面10の最大径部10aの外径寸法以下に形成してあるところにある。
【0009】
尚、上述のように、図面との対照を便利にするために符号を記したが、該記入により本発明は添付図面の構成に限定されるものではない。
【0010】
〔作用及び効果〕
請求項1に係わる本発明の特徴構成によれば、前記キャップの外周部に、先細り形状の第一傾斜面を形成すると共に、前記キャップの内空周壁部と前記吸引口閉塞部との間に隙間を形成してあるから、板ガラス面に沿った方向の外力が前記第一傾斜面に作用した場合、その外力は、前記第一傾斜面に沿って逃げる方向の分力と、キャップを板ガラスに押し付ける方向の分力に分かれる。
そして、前者の分力によれば、キャップを板ガラス面に沿って移動させる作用が実質的に弱まり、後者の分力によれば、キャップと板ガラス面との摩擦抵抗を増加させる作用があり、全体的に見て、前記外力を受けた場合、従来のもの(キャップ外周面が、板ガラス面に直交するもので、前記外力が、キャップを板ガラス面に沿って移動させる方向にまともに作用するもの)に比べて、キャップが板ガラス面に沿って移動しにくい状態となる。
また、仮に、前記外力によってキャップが移動したとしても、その移動量が前記隙間寸法内であれば、前記キャップの内空周壁部が吸引口閉塞部に直接当たることを防止できる。
従って、キャップ部分に外力が作用しても吸引口閉塞部が破損し難く、長期間にわたって空隙部の減圧状態を維持し易くすることが可能となる。
【0011】
請求項2に係わる本発明の特徴構成によれば、請求項1に記載の発明による作用効果を叶えることができるのに加えて、前記キャップの内空周壁部のうち、前記吸引口閉塞部の頭部と同じ高さに相当する部分から、キャップ基端側にかけての内空周壁部分に、末広がりの第二傾斜面を形成してあるから、前記外力の作用でキャップの接着部分が外れてキャップ内空周壁部が吸引口閉塞部に当たった場合であっても、前記吸引口閉塞部に対して傾斜した状態で前記第二傾斜面が当接する。
即ち、キャップの当接力(板ガラス面に沿った方向の移動力)は、前記吸引口閉塞部に対してまともに作用することはなく、前記第二傾斜面に直交する方向の分力が作用するのみで、前記吸引口閉塞部を折り倒す力としては低減される。
従って、従来のもの(キャップ内空周壁部が、板ガラス面に直交するもので、前記当接力が、板ガラス面に沿った方向で吸引口閉塞部に対してまともに作用するもの)に比べて、吸引口閉塞部が破損し難い状態となる。
その結果、キャップ部分に対する外力の作用で、キャップが外れて吸引口閉塞部に当接しても、吸引口閉塞部が破損し難く、より長期間にわたって空隙部の減圧状態を維持し易くすることが可能となる。
【0012】
請求項3に係わる本発明の特徴構成によれば、請求項1又は2に記載の発明による作用効果を叶えることができるのに加えて、前記第一傾斜面は、ガラス面に対して50度以下の傾斜角度に設定してあるから、前記外力に対してキャップがより外れ難いガラスパネルとすることが可能となる。
また、キャップは、板ガラスの表面に突出状態に取り付けられているわけであるが、例えば、指でこのキャップを摘むことによってもキャップが外れ、それに伴って吸引口閉塞部が破損することが考えられる。そこで、前記第一傾斜面の傾斜角度が50度以下に設定してあれば、指がキャップに掛かり難いことから、不用意にキャップを摘んで外れたり、それに伴って吸引口閉塞部が破損するといったことを防止し易くなる。
【0013】
請求項4の発明の特徴構成によれば、請求項1〜3の何れか一項に記載の発明による作用効果を叶えることができるのに加えて、前記キャップの外周部のうち、前記第一傾斜面よりキャップ基端側の部分は、その外径寸法を、前記第一傾斜面の最大径部の外径寸法以下に形成してあるから、例えば、キャップの出来上がり形状のうち、高さ寸法に多少の変動があったにしても、キャップの最大外径寸法は、前記第一傾斜面の最大径部の外径寸法となり、外観上の差を目立ち難くすることが可能となる。
即ち、キャップの製造寸法誤差を、前記第一傾斜面よりキャップ基端側の部分によって吸収することが可能となり、製品の歩留まりを向上させることが可能となる。
【0014】
【発明の実施の形態】
以下に本発明の実施の形態を図面に基づいて説明する。
【0015】
図1・図2は、本発明のガラスパネルの実施形態の一つを示すもので、ガラスパネルPは、一対の板ガラス1間に、板面に沿って間隔をあけて複数のスペーサ2を介在させて形成してあるガラスパネル本体P1に対して、両板ガラス1A,1B間の空隙部Vを減圧密閉することで構成してある。
【0016】
前記一対の板ガラス1は、それぞれ厚み寸法3mm(JIS規格でいう3mm板ガラスで、実質的には、厚み誤差を考慮すると、2.7〜3.3mmとなる)で透明なフロート板ガラスで構成してあり、両板ガラス1の外縁全周にわたっては低融点ガラス(例えば、はんだガラス)のシール部4を設けて、前記空隙部Vの密閉を図ってある。そして、前記空隙部Vは、例えば、真空環境下でのガラスパネル本体P1製作や、又は、ガラスパネル本体P1製作後に吸引する等の方法によって減圧環境(1.0×10-2Torr以下)を呈する状態に構成してある。
因みに、両板ガラス1の外周縁部は、一方の板ガラス1Aが板面方向に沿って突出する状態に配置してあり、この突出部5を形成してあることによって、前記シール部4の形成時に、この突出部5にシール材(例えば、前記低融点ガラス)を載置した状態で、効率的に且つ確実に空隙部V外周部を密閉することが可能となる。
【0017】
前記スペーサ2は、ステンレス鋼製で円柱形状に形成してあり、その寸法は直径が0.30〜1.00mmであり、高さ寸法が0.1〜0.5mmに設定してある。そして、板ガラスと接触する部分を円形状に形成してあることによって、両板ガラス1に対する接当部分に応力集中を生じ易い角部を造らず、板ガラス1を破壊し難くすることができる。
一方、前記スペーサ2の設置間隔に関しては、10〜25mmの寸法に設定してある。
【0018】
次に、前記空隙部Vの減圧に関する構成を、図3によって説明する。
前記一対の板ガラス1のうちの何れか一方の板ガラス1Aには、前記空隙部Vの減圧を行う吸引部6を設けてある。この吸引部6を構成するに、前記一方の板ガラス1Aに形成した吸引口1aに、ガラス管7aを配置し、吸引口1a周壁とガラス管7aとの間を、低融点ガラス8によって密閉連結してある。そして、前記ガラス管7aから前記空隙部Vの気体を吸引して充分な減圧状態にしてから、前記ガラス管7aの突出先端部7bを加熱融解によって閉塞してある。
前記ガラス管7a、及び、突出先端部7bは、板ガラス1Aの表面に突出状態に設けてあり、この両者で吸引口閉塞部7が構成してある。
そして、この吸引口閉塞部7を設けた吸引部6を覆う状態に保護用キャップ9を設け、前記一方の板ガラス1Aに接着してある。
【0019】
因みに、前記ガラス管7aは、その厚みが0.1〜1.0mmのものを使用するのが好ましい。
即ち、厚みが1.0mmを越えるものを使用すると、突出先端部7bの閉塞時に、昇温から自己融着までに時間を要すことになり、周囲の不要な部位まで温度が上昇し、甚だしい場合にはその結果生じる温度勾配のために板ガラス1又は低融点ガラス8にクラックを生じてしまう危険性がある。また、厚みが0.1mm未満のものを使用すると、昇温は容易に実施できるものの、自己融解して形状を保つのが困難となる上、強度が弱いから極めて破損し易くなる。
【0020】
前記キャップ9は、合成樹脂(例えば、ABS樹脂を使用すれば、耐衝撃性が高いので吸引口閉塞部7の保護効果が高い)製で、膨出形状に形成してある。
そして、キャップ9は、平面視に於いて外周部が円形となるように構成してあると共に(図1参照)、側面視の断面形状に於いて、その外周部に先細り形状の第一傾斜面10を形成し、その第一傾斜面10よりキャップ基端側の部分は、その外径寸法を、前記第一傾斜面10の最大径部10aの外径寸法と同じ外径寸法に形成した直立面11に形成してある。高さ寸法は、キャップ9全体では6mm以下にすることによって、他物が引っかかり難いことと、美観性の点で好ましい。また、前記直立面11の高さ寸法は、1.2mm以下にすることによって、特に指で摘み難くなり、また、他物がキャップ9に当たるとしても前記第一傾斜面10の方に当接し易くなるため好ましい。
前記第一傾斜面10は、ガラス面に対して約45度(50度以下が好ましい)の傾きに形成してある。
また、キャップ9は、前記吸引口閉塞部7を覆うように配置した状態で、その内空周壁部と前記吸引口閉塞部7との間に隙間Sが形成されるように寸法設定してある。そして、キャップ9の内空周壁部のうち、前記吸引口閉塞部7の頭部と同じ高さに相当する部分から、キャップ基端側にかけての内空周壁部分は、末広がりの第二傾斜面12に形成してある。
【0021】
因みに、キャップ9は、基端面に接着剤13を塗布して板ガラス1Aに接着してある。ここに使用する接着剤13としては、接着強度が15kg/cm2 以上のものが好ましく、具体的には、シリコーン室温硬化型液性接着剤や、エポキシ系急速硬化型接着剤や、嫌気性接着剤や、主成分がエチルシアノアクリレートの高剥離強度瞬間接着剤や、主成分がシリル基含有特殊ポリマーの一液常温急速硬化型接着剤等が挙げられる。
【0022】
当該実施形態のガラスパネルによれば、キャップ9取付部分に外力(特に、板ガラス面に沿って作用する外力)が作用しても、前記第一傾斜面10によってその作用方向を変換し、接着部分への負担の軽減を図ることが可能となり、外れ難くすることができる。そして、仮に、キャップ9が外れたとしても、前記第二傾斜面12から吸引口閉塞部7に作用する接当力の作用方向を、前記第二傾斜面12で変換し、吸引口閉塞部7への負担の軽減を図ることが可能となり、吸引口閉塞部7が破損するのを防止し易くすることが可能となる。更には、キャップ9の大量生産において、高さ誤差が生じた場合でも、その誤差分は前記直立面11に表れることになり、実質的には、キャップ9の外径寸法は、前記最大径部10aの外径寸法に維持することが可能となり、外観の統一性を図り易い。
また、吸引部6の形成にあたっても、適切な厚み寸法のガラス管7aを選定してあることによって、空隙部Vの減圧状態を維持して、高断熱性をより長く備えさせることが可能となる。
【0023】
【実施例】
次に、ガラスパネルに対する外力(板ガラス面に沿って作用する外力)の作用と、キャップの外れる頻度についての実験結果を説明する。
但し、実験に使用したガラスパネルは、次の条件のものとした。
板ガラスは、3ミリフロート板ガラスを使用し、大きさは300×300mmのもの。
キャップは、第一傾斜面に対応する部分の板ガラスとの傾斜角度が、90度 (実質的に第一傾斜面がない状態)のもの、75度、60度、50度、45度、30度、20度のそれぞれのものを使用し、エポキシ系接着剤で板ガラスに接着した。
そして、キャップへの外力の加え方は、ゴム製の擬似的作用体を用意し、前記擬似的作用体を板ガラス面に沿って移動させ、前記キャップに衝突させた。
前記擬似的作用体は、作用面の巾寸法は50mmで、高さ寸法は10mm、そして、作用方向の長さ寸法は20mmの形状に形成してあるものを使用した。
その結果は、表1に示すとおりで、キャップが外れなかったものを良好とした。
この結果から見られるように、前記第一傾斜面は傾斜角度(板ガラス面に対する角度)が90度のもの(直立)より傾斜しているものの方がキャップの外れ頻度が低く、50度以下の角度の傾斜させてあることが好ましい。
【0024】
【表1】

Figure 0004049443
【0025】
〔別実施形態〕
以下に他の実施の形態を説明する。
【0026】
〈1〉 本発明のガラスパネルは、多種にわたる用途に使用することが可能で、例えば、建築用・乗物用(自動車の窓ガラス、鉄道車両の窓ガラス、船舶の窓ガラス)・機器要素用(プラズマディスプレイの表面ガラスや、冷蔵庫の開閉扉や壁部、保温装置の開閉扉や壁部)等に用いることが可能である。
〈2〉 前記板ガラスは、先の実施形態で説明した厚み3mmの板ガラスに限るものではなく、他の厚みの板ガラスであってもよい。また、ガラスの種別は任意に選定することが可能であり、例えば型板ガラス、すりガラス(表面処理により光を拡散させる機能を付与したガラス)、網入りガラス又は強化ガラスや熱線吸収、紫外線吸収、熱線反射等の機能を付与した板ガラスや、それらとの組み合わせであってもよい。
また、ガラスの組成については、ソーダ珪酸ガラス(ソーダ石灰シリカガラス)や、ホウ珪酸ガラスや、アルミノ珪酸ガラスや、各種結晶化ガラスであってもよい。
〈3〉 前記板ガラスは、一方の板ガラスと他方の板ガラスとが、長さや巾寸法が異なるものを使用するのに限定されるものではなく、同寸法に形成してあるものを使用するものであってもよい。そして、両板ガラスの重ね方は、端縁部どうしが揃う状態に重ね合わせてあってもよい。また、一方の板ガラスと他方の板ガラスとの厚み寸法が異なるものを組み合わせてガラスパネルを構成してあってもよい。
〈4〉 前記間隔保持部材は、先の実施形態で説明したステンレス鋼製のスペーサに限るものではなく、例えば、インコネル718や、それ以外にも、他の金属・石英ガラス・セラミックス等であってもよく、要するに、外力を受けて両板ガラスどうしが接することがないように変形しにくいものであればよい。
〈5〉 前記キャップは、先の実施形態で説明したように合成樹脂製のものに限るものではなく、例えば、金属製やセラミックス製、又は、塩化ビニル樹脂製・アクリル樹脂製・PET・EPDM等であってもよく、要するに外力の作用に対する強度を備えてあるものであればよい。特に、第一傾斜面は、作用する外力を逸らせ易いように滑らかに形成してあることが好ましい。
〈6〉 前記キャップは、先の実施形態で説明した直立面11が必ず設けてある必要はなく、キャップの外周面がすべて第一傾斜面に構成してあってもよい(図5参照)。
また、その第一傾斜面の板ガラス面との傾斜角度は、90度未満で、好ましくは、50度以下である。
一方、前記直立面11を設けるのに替えて、図4に示すように、第一傾斜面とは逆勾配の傾斜面を第一傾斜面とキャップ基端部との間に形成するものであってもよい。この実施形態に於いても、キャップの製作誤差による外径寸法変化を抑制することが可能となる。
〈7〉 前記キャップの第二傾斜面は、先の実施形態で説明したものの他、図5・6に示すように、断面視で曲面形状の凹球面に形成してあってもよい。
また、図6に示すように、キャップ内空周壁部分の一部に第二傾斜面12を形成してあるものであってもよい。
【図面の簡単な説明】
【図1】ガラスパネルを示す一部切欠き斜視図
【図2】ガラスパネルの断面図
【図3】ガラスパネルの要部断面図
【図4】別実施形態のキャップを示す断面図
【図5】別実施形態のキャップを示す断面図
【図6】別実施形態のキャップを示す断面図
【図7】従来のガラスパネルの要部断面図
【符号の説明】
1 板ガラス
1A 板ガラス
1B 板ガラス
6 吸引部
7 吸引口閉塞部
9 キャップ
10 第一傾斜面
10a 最大径部
12 第二傾斜面
P1 ガラスパネル本体
S 隙間
V 空隙部[0001]
BACKGROUND OF THE INVENTION
The present invention provides a glass panel body in which a pair of plate glasses are arranged at intervals in the thickness direction, and a gap between the two plate glasses is hermetically decompressed, and either one of the pair of plate glasses is provided. A suction port closing part after the pressure reduction of the gap is performed on the plate glass so that the suction part is formed in a protruding state on the surface of the plate glass, and a cap for protecting the suction port closing part is provided. The present invention relates to a glass panel adhered to the one sheet glass in a covering state.
[0002]
[Prior art]
As a plate glass having higher heat insulation performance than a single plate glass, there is known a double-layer glass in which an air layer serving as a heat insulation layer is interposed between a pair of plate glasses, and this type of glass panel is known. However, there is a problem that the thickness of the film itself becomes large, and the aesthetics including the sash are easily lost. Therefore, as a thin and high heat insulating material, a plurality of spacers are arranged between a pair of glass sheets, and a sealing member made of, for example, low melting point glass is disposed between the outer edge portions of both glass sheets over the entire circumference. It is considered that a glass panel having a smaller thickness and a smaller heat transmissivity can be obtained by integrally providing the above-described structure and setting the gap to a reduced pressure state.
And about making the said cavity part into a pressure-reduced state, the glass tube for suction is previously provided in any one plate glass of a pair of glass plates, and the pressure reduction of the said cavity part is carried out using the glass tube. In order to maintain the pressure-reduced state of the gap, the tip of the glass tube is melted by heat to form a highly reliable suction port closing part. However, if the suction port blockage part is left exposed, there is a risk that it will break when another object hits it, and there is a risk that the decompressed state of the gap will be released, so the cap is necessary. It is.
As this type of conventional glass panel, as shown in FIG. 7, the cap 20 is formed in a cylindrical shape in appearance, and corresponds to the dimensions of the suction port blocking portion so as to fit into the suction port blocking portion 7 exactly. It has been considered that the fitting hole portion 21 is provided, and the adhesive 13 is applied to the peripheral edge of the opening of the hole portion 21 so as to cover the suction port closing portion 7 and adhere to one plate glass 1A.
[0003]
[Problems to be solved by the invention]
According to the conventional glass panel described above, when another object hits the cap installation part, particularly when the other object hits in the direction along the plate glass surface, the impact is received by the adhesive layer with the plate glass, At the same time, it is also transmitted to the suction port blocking portion, and there is a problem that the suction port blocking portion is easily damaged and it is difficult to maintain the reduced pressure state of the gap portion. When the external force from the other object acts in the direction along the plate glass surface, there is a high risk of breakage because it is particularly easy to receive an impact.
[0004]
Accordingly, an object of the present invention is to provide a glass panel that solves the above-mentioned problems and that is easy to maintain the reduced pressure state of the gap portion over a long period of time, even if an external force acts on the cap portion, the suction port blocking portion is not easily damaged. There is a place to do.
[0005]
[Means for Solving the Problems]
〔Constitution〕
As illustrated in FIGS. 2 to 6, the characteristic configuration of the present invention according to claim 1 is that a pair of plate glasses 1 are arranged at intervals in the thickness direction, and the gap V between the two plate glasses 1 is hermetically reduced. The glass panel main body P1 is provided, and the suction port closing part 7 after the pressure reduction of the gap V is performed on any one of the pair of glass sheets 1 in a protruding state on the surface of the glass sheet. In the glass panel in which the cap 9 for providing the suction portion 6 and protecting the suction port closing portion 7 is bonded to the one glass sheet 1A so as to cover the suction portion 6, A tapered first inclined surface 10 is formed on the outer peripheral portion, and a gap S is formed between the inner peripheral wall portion of the cap 9 and the suction port closing portion 7.
[0006]
The characteristic configuration of the present invention according to claim 2 is as shown in FIGS. 2 to 6 from a portion corresponding to the same height as the head of the suction port closing portion 7 in the inner peripheral wall portion of the cap 9. The second inclined surface 12 is formed at the inner peripheral wall portion extending toward the base end of the cap.
[0007]
The characteristic configuration of the present invention according to claim 3 is that the first inclined surface 10 is set to an inclination angle of 50 degrees or less with respect to the glass surface, as illustrated in FIGS.
[0008]
As shown in FIGS. 2, 3, 4 and 6, the characteristic configuration of the present invention according to claim 4 is that the portion of the outer periphery of the cap 9 that is closer to the cap proximal end than the first inclined surface 10 is The outer diameter dimension is set to be equal to or smaller than the outer diameter dimension of the maximum diameter portion 10 a of the first inclined surface 10.
[0009]
In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry.
[0010]
[Action and effect]
According to the characteristic configuration of the present invention according to claim 1, a tapered first inclined surface is formed on the outer peripheral portion of the cap, and between the inner peripheral wall portion of the cap and the suction port closing portion. Since the gap is formed, when an external force in a direction along the plate glass surface acts on the first inclined surface, the external force is a component force in a direction to escape along the first inclined surface, and the cap is applied to the plate glass. Divided into component forces in the pressing direction.
And, according to the former component force, the action of moving the cap along the plate glass surface is substantially weakened, and according to the latter component force, there is an action of increasing the frictional resistance between the cap and the plate glass surface. In particular, when receiving the external force, the conventional one (the outer peripheral surface of the cap is orthogonal to the glass sheet surface, and the external force acts in the direction of moving the cap along the glass sheet surface) As compared with, the cap is less likely to move along the plate glass surface.
Further, even if the cap is moved by the external force, if the amount of movement is within the gap dimension, it is possible to prevent the inner peripheral wall portion of the cap from directly hitting the suction port closing portion.
Therefore, even if an external force acts on the cap portion, the suction port blockage portion is not easily damaged, and it is possible to easily maintain the reduced pressure state of the gap portion over a long period of time.
[0011]
According to the characteristic configuration of the present invention relating to claim 2, in addition to being able to achieve the function and effect of the invention according to claim 1, of the inner peripheral wall portion of the cap, Since the second inclined surface is formed on the inner peripheral wall portion extending from the portion corresponding to the same height as the head portion to the base end side of the cap, the adhesive portion of the cap is removed by the action of the external force. Even when the inner peripheral wall portion hits the suction port blocking portion, the second inclined surface comes into contact with the suction port blocking portion in an inclined state.
That is, the contact force of the cap (moving force in the direction along the plate glass surface) does not act properly on the suction port closing portion, but a component force in the direction perpendicular to the second inclined surface acts. As a result, the force for folding the suction port blocking portion is reduced.
Therefore, compared with the conventional one (the inner peripheral wall portion in the cap is orthogonal to the glass sheet surface, and the contact force acts on the suction port blocking part in the direction along the glass sheet surface), The suction port blockage portion is hardly damaged.
As a result, even if the cap comes off and comes into contact with the suction port blockage portion due to the action of external force on the cap portion, the suction port blockage portion is not easily damaged, and the reduced pressure state of the gap portion can be easily maintained for a longer period of time. It becomes possible.
[0012]
According to the characteristic configuration of the present invention according to claim 3, in addition to achieving the function and effect of the invention according to claim 1 or 2, the first inclined surface is 50 degrees with respect to the glass surface. Since the following inclination angles are set, it is possible to obtain a glass panel in which the cap is less likely to come off against the external force.
In addition, the cap is attached to the surface of the plate glass in a protruding state. For example, it is considered that the cap can be removed by squeezing the cap with a finger, and the suction port blocking portion can be damaged accordingly. . Therefore, if the inclination angle of the first inclined surface is set to 50 degrees or less, it is difficult for the finger to get on the cap, so that the cap is inadvertently picked off and the suction port blocking portion is damaged accordingly. It becomes easy to prevent.
[0013]
According to the characteristic configuration of the invention of claim 4, in addition to being able to achieve the function and effect of the invention according to any one of claims 1 to 3, the first of the outer peripheral portions of the cap. Since the outer diameter dimension of the portion on the cap base end side from the inclined surface is formed to be equal to or smaller than the outer diameter size of the maximum diameter portion of the first inclined surface, for example, the height dimension of the finished shape of the cap Even if there is some variation, the maximum outer diameter of the cap becomes the outer diameter of the maximum diameter portion of the first inclined surface, and the difference in appearance can be made inconspicuous.
That is, the manufacturing dimension error of the cap can be absorbed by the portion on the cap base end side from the first inclined surface, and the yield of the product can be improved.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0015]
1 and 2 show one embodiment of the glass panel of the present invention. The glass panel P has a plurality of spacers 2 interposed between a pair of plate glasses 1 at intervals along the plate surface. The gap V between the two glass plates 1A and 1B is sealed under reduced pressure with respect to the glass panel main body P1 thus formed.
[0016]
Each of the pair of plate glasses 1 is composed of a transparent float plate glass having a thickness dimension of 3 mm (3 mm plate glass as defined in JIS standard, which is substantially 2.7 to 3.3 mm in consideration of a thickness error). In addition, a sealing portion 4 of low melting point glass (for example, solder glass) is provided over the entire outer periphery of the both glass plates 1 so as to seal the gap portion V. And the said space | gap part V is a reduced pressure environment (1.0 * 10 <-2 > Torr or less) by the method of suctioning after glass panel main body P1 manufacture in a vacuum environment, or glass panel main body P1, for example. It is configured to present.
Incidentally, the outer peripheral edge part of both the glass plates 1 is arranged in a state in which one of the glass sheets 1A protrudes along the plate surface direction. By forming this protruding part 5, the seal part 4 is formed. In the state where the sealing material (for example, the low melting point glass) is placed on the projecting portion 5, the outer peripheral portion of the gap portion V can be sealed efficiently and reliably.
[0017]
The spacer 2 is made of stainless steel and formed in a cylindrical shape, and the dimensions thereof are 0.30 to 1.00 mm in diameter and 0.1 to 0.5 mm in height. And since the part which contacts plate glass is formed in circular shape, the corner | angular part which tends to produce stress concentration in the contact part with respect to both plate glass 1 is not made, but it can make it difficult to destroy plate glass 1. FIG.
On the other hand, the spacing between the spacers 2 is set to 10 to 25 mm.
[0018]
Next, the configuration related to the decompression of the gap V will be described with reference to FIG.
One plate glass 1 </ b> A of the pair of plate glasses 1 is provided with a suction portion 6 that depressurizes the gap V. In order to configure the suction part 6, a glass tube 7a is disposed in the suction port 1a formed in the one plate glass 1A, and the peripheral wall of the suction port 1a and the glass tube 7a are hermetically connected by a low melting point glass 8. It is. Then, after the gas in the gap V is sucked from the glass tube 7a to obtain a sufficiently reduced pressure state, the protruding tip 7b of the glass tube 7a is closed by heating and melting.
The said glass tube 7a and the protrusion front-end | tip part 7b are provided in the protruding state on the surface of the plate glass 1A, and the suction port obstruction | occlusion part 7 is comprised by these both.
And the protective cap 9 is provided in the state which covers the suction part 6 which provided this suction port obstruction | occlusion part 7, and it adhere | attached on said one plate glass 1A.
[0019]
Incidentally, it is preferable to use the glass tube 7a having a thickness of 0.1 to 1.0 mm.
In other words, if a material with a thickness exceeding 1.0 mm is used, it takes time from the temperature rise to the self-bonding when the protruding tip 7b is closed, and the temperature rises to unnecessary surrounding parts, which is serious. In some cases, there is a risk of cracking in the glass sheet 1 or the low-melting glass 8 due to the resulting temperature gradient. Further, when a material having a thickness of less than 0.1 mm is used, the temperature can be easily raised, but it is difficult to maintain its shape by self-melting, and it is very easy to break because of its low strength.
[0020]
The cap 9 is made of a synthetic resin (for example, if ABS resin is used, the impact resistance is high, so the protective effect of the suction port closing portion 7 is high), and the cap 9 is formed in a bulging shape.
The cap 9 is configured such that the outer peripheral portion is circular in plan view (see FIG. 1), and in the cross-sectional shape in side view, the tapered first tapered surface is formed on the outer peripheral portion. 10, the cap base end side portion of the first inclined surface 10 has an outer diameter dimension that is the same as the outer diameter dimension of the maximum diameter portion 10 a of the first inclined surface 10. It is formed on the surface 11. By making the height dimension 6 mm or less for the entire cap 9, it is preferable from the viewpoint of being difficult to catch other objects and aesthetics. In addition, when the height of the upright surface 11 is set to 1.2 mm or less, it becomes difficult to pick it with a finger, and even if another object hits the cap 9, it is easy to come into contact with the first inclined surface 10. Therefore, it is preferable.
The first inclined surface 10 is formed with an inclination of about 45 degrees (preferably 50 degrees or less) with respect to the glass surface.
Further, the cap 9 is dimensioned so that a gap S is formed between the inner peripheral wall portion and the suction port blocking portion 7 in a state where the cap 9 is disposed so as to cover the suction port blocking portion 7. . Of the inner peripheral wall portion of the cap 9, the inner peripheral wall portion from the portion corresponding to the same height as the head of the suction port closing portion 7 to the cap proximal end side is the second inclined surface 12 that widens toward the end. Is formed.
[0021]
Incidentally, the cap 9 is adhered to the plate glass 1A by applying an adhesive 13 to the base end face. The adhesive 13 used here preferably has an adhesive strength of 15 kg / cm 2 or more. Specifically, a silicone room temperature curable liquid adhesive, an epoxy-based rapid curable adhesive, an anaerobic adhesive, and the like. And a high peel strength instant adhesive whose main component is ethyl cyanoacrylate, and a one-component room temperature rapid curing adhesive whose main component is a silyl group-containing special polymer.
[0022]
According to the glass panel of the embodiment, even if an external force (particularly, an external force acting along the plate glass surface) is applied to the cap 9 mounting portion, the direction of action is changed by the first inclined surface 10, and the bonded portion It is possible to reduce the burden on the vehicle and make it difficult to come off. Even if the cap 9 is removed, the direction of contact force acting on the suction port closing part 7 from the second inclined surface 12 is converted by the second inclined surface 12, and the suction port closing part 7 is changed. It is possible to reduce the burden on the suction port, and to easily prevent the suction port blocking portion 7 from being damaged. Furthermore, even if a height error occurs in mass production of the cap 9, the error will appear on the upright surface 11, and the outer diameter of the cap 9 is substantially equal to the maximum diameter portion. It becomes possible to maintain the outer diameter of 10a, and it is easy to achieve uniform appearance.
Moreover, also in formation of the suction | inhalation part 6, it becomes possible to maintain the pressure-reduced state of the space | gap part V by providing the glass tube 7a of an appropriate thickness dimension, and to provide high heat insulation longer. .
[0023]
【Example】
Next, experimental results on the effect of external force on the glass panel (external force acting along the plate glass surface) and the frequency of cap removal will be described.
However, the glass panel used for the experiment was the following conditions.
The plate glass uses a 3 mm float plate glass and has a size of 300 × 300 mm.
The cap has an inclination angle with the plate glass corresponding to the first inclined surface of 90 degrees (substantially no first inclined surface), 75 degrees, 60 degrees, 50 degrees, 45 degrees, 30 degrees. Each of 20 degrees was used and adhered to the plate glass with an epoxy adhesive.
And the method of applying the external force to the cap prepared a rubber pseudo-acting body, moved the pseudo-acting body along the plate glass surface, and collided with the cap.
As the pseudo-acting body, a working surface having a width dimension of 50 mm, a height dimension of 10 mm, and a length dimension in the acting direction of 20 mm was used.
The results are as shown in Table 1, and those in which the cap was not removed were considered good.
As can be seen from this result, the first inclined surface has an inclination angle (an angle with respect to the glass sheet surface) of 90 degrees (upright), and the one with the inclination angle is less than 50 degrees. It is preferable to be inclined.
[0024]
[Table 1]
Figure 0004049443
[0025]
[Another embodiment]
Other embodiments will be described below.
[0026]
<1> The glass panel of the present invention can be used for a wide variety of applications, for example, for construction and vehicles (automobile window glass, railcar window glass, ship window glass) and device elements ( It can be used for surface glass of plasma displays, doors and walls of refrigerators, doors and walls of heat insulation devices, and the like.
<2> The plate glass is not limited to the plate glass having a thickness of 3 mm described in the previous embodiment, and may be a plate glass having another thickness. The type of glass can be arbitrarily selected. For example, template glass, ground glass (glass having a function of diffusing light by surface treatment), meshed glass or tempered glass, heat ray absorption, ultraviolet ray absorption, heat ray It may be a plate glass provided with a function such as reflection, or a combination thereof.
The glass composition may be soda silicate glass (soda lime silica glass), borosilicate glass, aluminosilicate glass, or various crystallized glasses.
<3> The plate glass is not limited to one in which one plate glass and the other plate glass have different lengths or width dimensions, but uses ones formed in the same dimensions. May be. And how to laminate | stack both plate glass may be piled up in the state which edge parts align. Moreover, you may comprise the glass panel combining the thing from which the thickness dimension of one plate glass and the other plate glass differs.
<4> The spacing member is not limited to the stainless steel spacer described in the previous embodiment. For example, Inconel 718 and other metals, quartz glass, ceramics, etc. In short, what is necessary is that it is difficult to be deformed so that the two glass plates do not contact each other under external force.
<5> The cap is not limited to those made of synthetic resin as described in the previous embodiment. For example, the cap is made of metal, ceramics, vinyl chloride resin, acrylic resin, PET, EPDM, or the like. In short, what is necessary is just to have strength against the action of external force. In particular, it is preferable that the first inclined surface is formed smoothly so as to easily deflect the acting external force.
<6> The cap does not necessarily have to be provided with the upright surface 11 described in the previous embodiment, and the outer peripheral surface of the cap may be all configured as a first inclined surface (see FIG. 5).
Moreover, the inclination angle with the plate glass surface of the 1st inclined surface is less than 90 degree | times, Preferably it is 50 degrees or less.
On the other hand, instead of providing the upright surface 11, as shown in FIG. 4, an inclined surface opposite to the first inclined surface is formed between the first inclined surface and the cap base end. May be. In this embodiment as well, it is possible to suppress changes in the outer diameter due to cap manufacturing errors.
<7> The second inclined surface of the cap may be formed as a concave spherical surface having a curved shape in a cross-sectional view as shown in FIGS.
Moreover, as shown in FIG. 6, the 2nd inclined surface 12 may be formed in a part of empty space wall part in a cap.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view showing a glass panel. FIG. 2 is a cross-sectional view of a glass panel. FIG. 3 is a cross-sectional view of a main part of the glass panel. FIG. 6 is a cross-sectional view showing a cap according to another embodiment. FIG. 7 is a cross-sectional view showing a main part of a conventional glass panel.
DESCRIPTION OF SYMBOLS 1 Plate glass 1A Plate glass 1B Plate glass 6 Suction part 7 Suction port obstruction | occlusion part 9 Cap 10 1st inclined surface 10a Maximum diameter part 12 2nd inclined surface P1 Glass panel main body S Crevice V Gap part

Claims (4)

一対の板ガラスを、厚み方向に間隔をあけて配置すると共に、前記両板ガラス間の空隙部を密閉減圧してあるガラスパネル本体を設け、前記一対の板ガラスのうちの何れか一方の板ガラスに、前記空隙部の減圧を行った後の吸引口閉塞部を、板ガラス表面に突出状態に設けて吸引部を形成し、前記吸引口閉塞部を保護するためのキャップを、前記吸引部を覆う状態に前記一方の板ガラスへ接着してあるガラスパネルであって、
前記キャップの外周部に、先細り形状の第一傾斜面を形成すると共に、前記キャップの内空周壁部と前記吸引口閉塞部との間に隙間を形成してあるガラスパネル。
While arranging a pair of plate glass at intervals in the thickness direction, providing a glass panel body that is hermetically depressurizing the gap between the two plate glasses, to any one of the pair of plate glasses, The suction port blockage portion after decompressing the void portion is provided in a protruding state on the surface of the plate glass to form a suction portion, and a cap for protecting the suction port blockage portion is provided so as to cover the suction portion. A glass panel bonded to one plate glass,
The glass panel which formed the taper-shaped 1st inclined surface in the outer peripheral part of the said cap, and has formed the clearance gap between the inner peripheral wall part of the said cap, and the said suction opening obstruction | occlusion part.
前記キャップの内空周壁部のうち、前記吸引口閉塞部の頭部と同じ高さに相当する部分から、キャップ基端側にかけての内空周壁部分に、末広がりの第二傾斜面を形成してある請求項1に記載のガラスパネル。Of the inner peripheral wall portion of the cap, from the portion corresponding to the same height as the head of the suction port closing portion, an inner peripheral wall portion extending toward the base end side of the cap is formed with a second inclined surface that widens toward the end. The glass panel according to claim 1. 前記第一傾斜面は、ガラス面に対して50度以下の傾斜角度に設定してある請求項1又は2に記載のガラスパネル。The glass panel according to claim 1 or 2, wherein the first inclined surface is set to an inclination angle of 50 degrees or less with respect to the glass surface. 前記キャップの外周部のうち、前記第一傾斜面よりキャップ基端側の部分は、その外径寸法を、前記第一傾斜面の最大径部の外径寸法以下に形成してある請求項1〜3の何れか一項に記載のガラスパネル。2. A portion of the outer peripheral portion of the cap that is closer to the cap base end than the first inclined surface has an outer diameter dimension equal to or smaller than an outer diameter dimension of a maximum diameter portion of the first inclined surface. The glass panel as described in any one of -3.
JP12120398A 1998-04-30 1998-04-30 Glass panel Expired - Lifetime JP4049443B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP12120398A JP4049443B2 (en) 1998-04-30 1998-04-30 Glass panel
CN99800652A CN1117912C (en) 1998-04-30 1999-04-26 Glass panel
KR1019997009373A KR100326089B1 (en) 1998-04-30 1999-04-26 Glass panel
PCT/JP1999/002230 WO1999057405A1 (en) 1998-04-30 1999-04-26 Glass panel
TW088107070A TW405013B (en) 1998-04-30 1999-04-30 Glass panel

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WO2004025064A1 (en) * 2002-09-13 2004-03-25 Beo Technology Group Co.,Ltd High thermo and sound-insulating evacuated glass panel device
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