JP4022969B2

JP4022969B2 - Sheet glass support structure

Info

Publication number: JP4022969B2
Application number: JP03011398A
Authority: JP
Inventors: 智和久井; 剛岡崎; 浩士小島
Original assignee: Asahi Glass Co Ltd
Current assignee: AGC Inc
Priority date: 1998-02-12
Filing date: 1998-02-12
Publication date: 2007-12-19
Anticipated expiration: 2018-02-12
Also published as: JPH11229534A

Description

【０００１】
【発明の属する技術分野】
本発明は、板ガラスの支持構造に関する。
【０００２】
【従来の技術】
従来より、複数の板ガラスで形成される大型ガラススクリーンによって建物の外壁を構築する工法が、採光、視界の良好さなどの点で広く採用されている。
【０００３】
図１３に示す従来の板ガラスの支持構造の一例では、直立した複数のフェイス板ガラス１の側端を突き合わせて、建築物の室内Ａ側と室外Ｂ側とを仕切るガラス壁面を構築している。また、フェイス板ガラス１に対して直交するリブ板ガラス２を、フェイス板ガラス１の室内Ａ側において、隣接するフェイス板ガラス１の突き合わせ部に沿うように配置している。
隣接するフェイス板ガラス１の突き合わせ部、ならびにフェイス板ガラス１とリブ板ガラス２の間には、シーリング材４が充填され、該シーリング材４によって、フェイス板ガラス１とリブ板ガラス２とが相互に接着されている。
【０００４】
リブ板ガラス２の上部には、ガラス板厚方向に貫通するボルト挿通用の複数の挿通孔５が、ほぼ水平に並ぶように穿設されている。
リブ板ガラス２の上部両側には、建築物の躯体に固定された山形鋼よりなる支持部材６が、リブ板ガラス２を両側から挟んで対向しており、該リブ板ガラス２と支持部材６の間には、緩衝材８が介在している。
【０００５】
リブ板ガラス２の挿通孔５に対峙するように両支持部材６に穿設された挿通孔７、およびリブ板ガラス２の挿通孔５には、取付ボルト（図示せず）が挿通され、取付ボルト、該取付ボルトに螺合されるナット（図示せず）および支持部材６を介して、リブ板ガラス２が建築物の躯体に支持されている。また、フェイス板ガラス１の上下部およびリブ板ガラス２の上部は、躯体に固定された固定枠９により支持されている。
【０００６】
この板ガラスの支持構造では、取付ボルトおよびナットの締結力でリブ板ガラス２に対する支持部材６の支圧を高く保ち、また、リブ板ガラス２の上部に複数の挿通孔５を穿設することで、フェイス板ガラス１が風圧力を受けた時に各挿通孔５に作用する応力の分散を図っている。
【０００７】
図１４に示す従来の板ガラスの支持構造の他の例では、直立した複数のフェイス板ガラス１の両側端および上下端を突き合わせ、上下に隣接するフェイス板ガラス１の四隅部分を固定部材１０で相互に締結して、建築物の室内Ａ側と室外Ｂ側とを仕切るガラス壁面を構成している。
また、フェイス板ガラス１に対して直交する複数の小板ガラス３の上下端を突き合わせて上下方向に連続するリブ板ガラス２を構成し、該リブ板ガラス２を、フェイス板ガラス１の室内Ａ側において、上下方向に延びる該フェイス板ガラス１の突き合わせ部に全長にわたって沿うように配置している。
【０００８】
隣接するフェイス板ガラス１の間、ならびにフェイス板ガラス１と小板ガラス３との間には、シーリング材４が充填され、該シーリング材４によって、フェイス板ガラス１とリブ板ガラス２とが接着されている。
【０００９】
小板ガラス３の突き合わせ部の上下両側には、ガラス板厚方向に貫通する複数の挿通孔５が突き合わせ部に沿って並ぶように穿設されている。小板ガラス３の突き合わせ部の左右両側には、板状の連結部材１１が小板ガラス３を挟んで対向しており、小板ガラス３と連結部材１１との間には緩衝材８が介在している。
【００１０】
小板ガラス３の挿通孔５に対峙するように両連結部材１１に穿設された挿通孔７、および小板ガラス３の挿通孔５には、取付ボルト（図示せず）が挿通され、取付ボルト、該取付ボルトに螺合されるナット（図示せず）および連結部材１１を介して、上下に隣接する小板ガラス３が相互に連結されてリブ板ガラス２を形成している。連結部材１１には先に述べた固定部材１０が取り付けられている。
また、フェイス板ガラス１およびリブ板ガラス２の下部は、躯体に固定された固定枠９により支持されており、上部も躯体に固定された図示せぬ固定枠９により支持されている。
【００１１】
この板ガラスの支持構造では、取付ボルトおよびナットの締結力で小板ガラス３に対する連結部材１１の支圧を高く保ち、また、小板ガラス３の上下部に複数の挿通孔５を穿設することで、フェイス板ガラス１が風圧を受けたときに各小板ガラス３の挿通孔５に作用する応力の分散を図っている。
【００１２】
【発明が解決しようとする課題】
しかし、従来の板ガラスの支持構造では、フェイス板ガラス１が大きな風圧力を受けた際に、該フェイス板ガラス１とともにリブ板ガラス２が変形しようとして、リブ板ガラス２、またはリブ板ガラス２を構成する小板ガラス３の挿通孔５に大きな応力が作用することになる。これにより、リブ板ガラス２、またはリブ板ガラス２を構成する小板ガラス３に損傷が生じることが懸念される。
本発明は、上述した実情を鑑みてなしたもので、板ガラスの挿通孔への応力緩和を図れる板ガラスの支持構造を提供することを目的としている。
【００１３】
【課題を解決するための手段】
上記目的を達成するため、本発明は、固定構造物に取り付けられ、かつ板ガラスを挟んで対峙する支持部材と前記板ガラスとに挿通孔を穿設し、該挿通孔にボルトを挿通することにより板ガラスを支持部材に締結する板ガラスの支持構造において、ヤング率が１０，０００〜２００，０００ｋｇｆ／ｃｍ ² である材料で形成した緩衝用リングを、板ガラスの挿通孔内に内接しかつボルトに外嵌するように設けた板ガラスの支持構造を提供する。
【００１４】
また、固定構造物に取り付けられ、かつ板ガラスを挟んで対峙する支持部材と前記板ガラスとに挿通孔を穿設し、該挿通孔にボルトを挿通することにより板ガラスを支持部材に締結する板ガラスの支持構造において、ヤング率が１０，０００〜２００，０００ｋｇｆ／ｃｍ ² である材料で形成した緩衝用リングを、板ガラスの挿通孔に内接するように設け、ヤング率が緩衝用リングの形成材料とボルトの形成材料の中間値を呈する材料、または、ヤング率がボルトの形成材料と同等の値を呈する材料、で形成した位置保持用リングを、緩衝用リングに内接しかつボルトに外嵌するように設けた板ガラスの支持構造を提供する。
【００１５】
また、上記のボルトの板ガラス挿通部分の外径および緩衝用リングの内径が、一端から他端に向かって徐々に拡大するテーパ状に形成され、かつ緩衝用リングに一端から他端に延びる切り欠き部が設けられている板ガラスの支持構造を提供する。
【００１６】
さらに、上記の位置保持用リングの外径および緩衝用リングの内径が、一端から他端に向かって徐々に拡大するテーパ状に形成され、かつ位置保持用リングおよび緩衝用リングのそれぞれに一端から他端に延びる切り欠き部が設けられている板ガラスの支持構造を提供する。
【００１７】
また、固定構造物に取り付けられ、かつ板ガラスを挟んで対峙する支持部材と前記板ガラスとに挿通孔を穿設し、該挿通孔にボルトを挿通することにより、板ガラスを支持部材に締結する板ガラスの支持構造において、板ガラスの挿通孔の一端寄り部分の内径を、一端側に向かって徐々に拡大する皿孔状に形成し、ヤング率がガラスに比べて著しく小さい材料で形成した一端寄り部分の内径および外径が一端側へ向かってテーパ状に徐々に拡大する緩衝用リングを、板ガラスの挿通孔に内接しかつ非内径拡大部分がボルトに外嵌するように設け、ヤング率が緩衝用リングの形成材料とボルトの形成材料の中間値、または、ヤング率がボルトの形成材料と同等の値、を呈する材料で形成した外径が一端に向かってテーパ状に徐々に拡大する位置保持用リングを、緩衝用リングの内径拡大部分に内接しかつボルトに外嵌するように設けた板ガラスの支持構造を提供する。
【００１８】
また、固定構造物に取り付けられ、かつ板ガラスを挟んで対峙する支持部材と前記板ガラスとに挿通孔を穿設し、該挿通孔にボルトを挿通することにより、板ガラスを支持部材に締結する板ガラスの支持構造において、板ガラスの挿通孔の各端寄り部分の内径を、各端側に向かって徐々に拡大する皿孔状に形成し、ヤング率がガラスに比べて著しく小さい材料で形成した一端寄り部分の内径および外径が一端側へ向かってテーパ状に徐々に拡大する２つの緩衝用リングを、板ガラスの挿通孔に内接しかつ非内径拡大部分がボルトに外嵌するように設け、ヤング率が緩衝用リングの形成材料とボルトの形成材料の中間値、または、ヤング率がボルトの形成材料と同等の値、を呈する材料で形成した外径が一端に向かってテーパ状に徐々に拡大する位置保持用リングを、各緩衝用リングの内径拡大部分に内接しかつボルトに外嵌するように設けた板ガラスの支持構造を提供する。
また、板ガラスの挿入孔と緩衝用リングとの間に接着剤層を介在させた上記板ガラスの支持構造を提供する。
【００１９】
本発明の板ガラスの支持構造では、板ガラスが変位する際に、板ガラスの挿通孔の内周面と取付ボルトの外周面との間に介在させた緩衝用リングが変形し、板ガラスの変位に伴って挿通孔の内周面に作用する応力の緩和を図る。
緩衝用リングとボルトとの間に位置保持用リングを介在させることにより、緩衝用リングの経時変化に起因する板ガラスの変位を抑制する。
【００２０】
【発明の実施の形態】
以下、本発明の実施例を図面に基づいて説明する。
図１は本発明の板ガラスの支持構造の実施の形態の第１の例を示す要部断面図、図２は図１に関連する緩衝用リングおよびボルトなどの分解斜視図である。
図３は本発明の板ガラスの支持構造の実施の形態の第２の例を示す要部断面図、図４は図３に関連する緩衝用リング、位置保持用リングおよびボルトなどの分解斜視図である。
図５は本発明の板ガラスの支持構造の実施の形態の第３の例を示す要部断面図、図６は図５に関連する緩衝用リングおよびボルトなどの分解斜視図である。
図７は本発明の板ガラスの支持構造の実施の形態の第４の例を示す要部断面図、図８は図７に関連する緩衝用リング、位置保持用リングおよびボルトなどの分解斜視図である。
図９は本発明の板ガラスの支持構造の実施の形態の第５の例を示す要部断面図、図１０は図９に関連する緩衝用リング、位置保持用リングおよびボルトなどの分解斜視図である。
図１１は本発明の板ガラスの支持構造の実施の形態の第６の例を示す要部断面図、図１２は図１１に関連する緩衝用リング、位置保持用リングおよびボルトなどの分解斜視図である。
なお、図１〜図１２において、相互に同一の符号を付した部分は同一物を表し、図１３〜図１４において、相互に同一の符号を付した部分は同一物を表す。
【００２１】
図１および図２における板ガラスの支持構造では、リブ板ガラス２の挿通孔５に、緩衝用リング１２を内接するように挿入し、リブ板ガラス２の両側面と各支持部材６との間に緩衝用ワッシャ２３を介在させている。
さらに、支持部材６の挿通孔７、緩衝用ワッシャ２３および緩衝用リング１２には、取付ボルト２１が挿通され、取付ボルト２１に螺合したナット２２を締め付けることにより、リブ板ガラス２を緩衝用ワッシャ２３を介して一対の支持部材６で挟持している。
【００２２】
緩衝用リング１２は、通常のソーダライムシリケートガラスのヤング率約７３０，０００ｋｇｆ／ｃｍ² よりも著しく小さなヤング率を持った材料で形成されている。例えば、１０，０００〜２００，０００ｋｇｆ／ｃｍ² 程度のヤング率を持った材料から選ばれた緩衝用リングを使用することが好ましい。こうした材料としては、ポリアセタール系樹脂、ポリカーボネート系樹脂等の耐久性に優れたエンジニアリングプラスチックが挙げられる。
【００２３】
このような条件を満たすヤング率の材料で緩衝用リング１２を形成すると、該緩衝用リング１２が挿通孔５の内周面の微小な加工傷にもなじみ、リブ板ガラス２に変位が生じた場合、緩衝用リング１２自体が変形して挿通孔５へ作用する応力が緩和されることが、実験と解析結果とからわかった。
【００２４】
図の例では、緩衝用リング１２の形成材料として、ヤング率が２８，８００ｋｇｆ／ｃｍ² であるポリアセタール系樹脂（例えばポリプラスチックス社製ジュラコン（商品名））が用いられている。
また、緩衝用リング１２の肉厚が過大であると、該緩衝用リング１２に経時変形が生じることが懸念されるので、緩衝用リング１２の肉厚は、０．３〜２ｍｍ程度とする。
【００２５】
図３および図４における板ガラスの支持構造では、リブ板ガラス２の挿通孔５に内接するように緩衝用リング１２を挿入し、該緩衝用リング１２に内接するように位置保持用リング１３を挿入し、リブ板ガラス２の両側面と各支持部材６との間に緩衝用ワッシャ２３を介在させている。
さらに、支持部材６の挿通孔７、緩衝用ワッシャ２３および位置保持用リング１３には、取付ボルト２１が挿通され、取付ボルト２１に螺合したナット２２を締め付けることにより、リブ板ガラス２を緩衝用ワッシャ２３を介して一対の支持部材６で挟持している。
【００２６】
位置保持用リング１３は、ヤング率が緩衝用リング１２の形成材料と取付ボルト２１の形成材料の中間値を呈する材料、または、ヤング率が取付ボルト２１の形成材料と同等の値を呈する材料、で形成されている。
例えば、取付ボルトとして高耐久性で高強度のステンレスを用いた場合、ステンレスのヤング率が約２，１００，０００ｋｇｆ／ｃｍ² 程度であるので、位置保持用リング１３としては７３０，０００〜２００，０００ｋｇｆ／ｃｍ² 程度のヤング率を持った材料が好ましく使用できる。例えば、約７００，０００ｋｇｆ／ｃｍ² 程度のヤング率を持つアルミニウムや約２，１００，０００ｋｇｆ／ｃｍ² 程度のヤング率を持つ軟鋼またはステンレス鋼が最適なものとして挙げられる。
【００２７】
このような条件を満たすヤング率の材料で位置保持用リング１３を形成すると、緩衝用リング１２の経時変形に起因したリブ板ガラス２の変位が抑制され、また、緩衝用リング１２による挿通孔５への応力緩和機能も低減しないことが、実験と解析結果とからわかった。
図の例では、位置保持用リング１３の形成材料として、ヤング率が７１９，０００ｋｇｆ／ｃｍ² であるアルミニウム合金が用いられている。
また、位置保持用リング１３の肉厚は、１〜４ｍｍ程度とする。
【００２８】
図５および図６における板ガラスの支持構造では、図１および図２に示す緩衝用リング１２のかわりに、一端から他端に向かって徐々に内径が拡大しかつ一端から他端に延びる切り欠き部１６を有する緩衝用リング１４を用いている。また、取付ボルト２１の板ガラス挿通部分の外径を、上記の緩衝用リング１４に応じたテーパ状に形成している。なお、緩衝用リング１４は、先に述べた緩衝用リング１２と同様な材料によって形成され、リブ板ガラス２の挿通孔５に挿入されている。
【００２９】
さらに、支持部材６の挿通孔７、緩衝用ワッシャ２３および緩衝用リング１４には、取付ボルト２１が挿通され、該取付ボルト２１に螺合したナット２２を締め付けることにより、リブ板ガラス２を緩衝用ワッシャ２３を介して一対の支持部材６で挟持している。
【００３０】
取付ボルト２１に螺合したナット２２を締め付けると、取付ボルト２１と緩衝用リング１４のそれぞれのテーパ面が軸線方向に相対的に摺動して緩衝用リング１４が径方向に押し広げられ、挿通孔７の内周面と緩衝用リング１４との間における微細な間隙の形成が抑制される。
このようにして、挿通孔７の内周面と緩衝用リング１４との間での間隙の形成を抑制すると、リブ板ガラス２が変位しにくくなり、挿通孔７に対する応力が効果的に緩和されることが、実験と解析結果とによってわかった。
【００３１】
図７および図８における板ガラスの支持構造では、図３および図４に示す緩衝用リング１２と位置保持用リング１３のかわりに、前述した緩衝用リング１４と、一端から他端に向かって徐々に内径が拡大しかつ一端から他端に延びる切り欠き部１７を有する位置保持用リング１５とを用いている。上記緩衝用リング１４と位置保持用リング１５とは、図示されるように一端から他端に向かってそれぞれ逆向きに徐々に内径が拡大する同じ傾斜面を有し、それぞれ断面が楔形状となって両者が食込むようになっている。
なお、位置保持用リング１５は、先に述べた位置保持用リング１３と同様な材料によって形成され、緩衝用リング１４に内接するように挿入されている。
【００３２】
さらに、支持部材６の挿通孔７および位置保持用リング１５には、取付ボルト２１が挿通され、該取付ボルト２１に螺合したナット２２を締め付けて、リブ板ガラス２を緩衝用ワッシャ２３を介して一対の支持部材６で支持している。
取付ボルト２１に螺合したナット２２を締め付けると、緩衝用リング１４と位置保持用リング１５とのそれぞれのテーパ面が軸線方向に相対的に摺動して、緩衝用リング１４が径方向に押し広げられ、挿通孔７の内周面と緩衝用リング１４との間での微細な間隙の形成が抑制される。
【００３３】
よって、図５および図６における板ガラスの支持構造と同様に、リブ板ガラス２が変位しにくくなり、挿通孔７に対する応力が効果的に緩和され、また、緩衝用リング１４の経時変化に起因したリブ板ガラス２の変位も抑制される。
【００３４】
図９および図１０における板ガラスの支持構造では、リブ板ガラス２の挿通孔５の一端寄り部分の内径を、一端側に向かって徐々に拡大する皿孔状に形成している。
一端寄り部分の内径および外径が一端側に向かってテーパ状に拡大する緩衝用リング１９を、外径拡大部分が挿通孔５の皿孔状部分１８に内接し、かつ非内径拡大部分が取付ボルト２１に外嵌するように設けている。
【００３５】
一端側に向かって外径が徐々に拡大する位置保持用リング２０を、緩衝用リング１９の内径拡大部分に内接し、かつ取付ボルト２１に外嵌するように設けている。
なお、緩衝用リング１９は、前記の緩衝用リング１２と同様な材料によって形成され、位置保持用リング２０は、前記の位置保持用リング１３と同様な材料によって構成されている。
【００３６】
さらに、支持部材６の挿通孔７、緩衝用ワッシャ２３、緩衝用リング１９および位置保持用リング２０には、取付ボルト２１が挿通され、該取付ボルト２１に螺合したナット２２を締め付けて、リブ板ガラス２を緩衝用ワッシャ２３を介して一対の支持部材６で支持している。
取付ボルト２１に螺合されたナット２２を締め付けると、緩衝用リング１９と位置保持用リング２０とのそれぞれのテーパ面が軸線方向に相対的に摺動して、緩衝用リング１９の外径拡大部分が径方向に押し広げられ、挿通孔７の皿孔状部分１８と緩衝用リング１９との間での微細な間隙の形成が抑制される。
【００３７】
よって、図５および図６における板ガラスの支持構造と同様に、リブ板ガラス２が変位しにくくなり、挿通孔７に対する応力が効果的に緩和され、また、緩衝用リング１９の経時変化に起因したリブ板ガラス２の変位も抑制される。
【００３８】
図１１および図１２における板ガラスの支持構造では、リブ板ガラス２の挿通孔５の一端寄り部分に加えて、挿通孔５の他端寄り部分の内径を、他端側に向かって徐々に拡大する皿孔状に形成している。また、他端側寄りの皿孔状部分１８に緩衝用リング１９を挿入し、該緩衝用リング１９の内径拡大部分に位置保持用リング２０を挿入している。
【００３９】
取付ボルト２１に螺合したナット２２を締め付けると、緩衝用リング１９と位置保持用リング２０とのそれぞれのテーパ面が軸線方向に相対的に摺動して、緩衝用リング１９の外径拡大部分が径方向に押し広げられ、挿通孔７の皿孔状部分１８と緩衝用リング１９との間での微細な間隙の形成が抑制される。
【００４０】
よって、図９および図１０における板ガラスの支持構造と同様に、リブ板ガラス２が変位しにくくなり、挿通孔７に対する応力が効果的に緩和され、また、緩衝用リング１９の経時変化に起因したリブ板ガラス２の変位も抑制される。
【００４１】
また、本発明の板ガラスの支持構造においては、板ガラスの挿入孔と緩衝用リングとの間に生じる隙間にエポキシ樹脂等の接着剤を充填し、両者の間に接着剤層を介在させると、挿入孔の強度が大きくなる。すなわち、板ガラスの挿入孔の加工面に穿孔によって生じる細かい凹凸があるので、これに直接ボルトに当ると応力集中が生じて破壊しやすくなる。そこで緩衝用リングを入れる板ガラスの挿入孔の加工面にエポキシ樹脂等の接着剤を充填すると更に接着面積が大きくなり孔強度が更に向上する。
【００４２】
図２、４においては、挿入孔５と緩衝用リング１２との間に、図６、８においては、挿入孔５と緩衝用リング１４との間に、また図１０、１２においては、挿入孔５および皿孔状部１８と緩衝用リング１９との間に、樹脂系の接着剤層を介在させて孔強度を向上させることができる。
【００４３】
なお、本発明の板ガラスの支持構造は上述した実施の形態のみに限定されず、本発明を小板ガラスと連結部材との締結部分に適用すること、緩衝用リングや位置保持用リングを前述した種類以外の材料で形成すること、その他本発明の要旨を逸脱しない範囲において変更を加えうる。
【００４４】
【発明の効果】
以上述べたように、本発明の板ガラスの支持構造では、下記のような種々の優れた効果を奏しうる。
（１）板ガラスが変位する際に、板ガラスの挿通孔の内周面と取付ボルトの外周面との間に介在させた緩衝用リングが変形するので、板ガラスの変位に伴って挿通孔の内周面に作用する応力の緩和を図れる。
（２）緩衝用リングとボルトとの間に位置保持用リングを介在させた場合には、緩衝用リングの経時変化に起因した板ガラスの変位が抑制できる。
（３）ボルトと緩衝用リング、位置保持用リングと緩衝用リング、緩衝用リングと板ガラスの挿通孔の相互接触面をテーパ状にした場合には、ボルトの締め付けによって緩衝用リングと挿通孔との間での微細な間隙の形成が抑制され、リブ板ガラスが変位しにくくなり、挿通孔に対する応力が効果的に緩和される。
【図面の簡単な説明】
【図１】本発明の板ガラスの支持構造の実施の形態の第１の例を示す要部断面図。
【図２】図１に関連する緩衝用リングおよびボルトなどの分解斜視図。
【図３】本発明の板ガラスの支持構造の実施の形態の第２の例を示す要部断面図。
【図４】図３に関連する緩衝用リング、位置保持用リングおよびボルトなどの分解斜視図。
【図５】本発明の板ガラスの支持構造の実施の形態の第３の例を示す要部断面図。
【図６】図５に関連する緩衝用リングおよびボルトなどの分解斜視図。
【図７】本発明の板ガラスの支持構造の実施の形態の第４の例を示す要部断面図。
【図８】図７に関連する緩衝用リング、位置保持用リングおよびボルトなどの分解斜視図。
【図９】本発明の板ガラスの支持構造の実施の形態の第５の例を示す要部断面図。
【図１０】図９に関連する緩衝用リング、位置保持用リングおよびボルトなどの分解斜視図。
【図１１】本発明の板ガラスの支持構造の実施の形態の第６の例を示す要部断面図。
【図１２】図１１に関連する緩衝用リング、位置保持用リングおよびボルトなどの分解斜視図。
【図１３】従来の板ガラスの支持構造の一例を示す斜視図。
【図１４】従来の板ガラスの支持構造の他の例を示す斜視図。
【符号の説明】
２：リブ板ガラス
５、７：挿通孔
６：支持部材
１２、１４、１９：緩衝用リング
１３、１５、２０：位置保持用リング
１６、１７：切り欠き部
２１：取付ボルト（ボルト）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plate glass support structure.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a construction method for constructing an outer wall of a building with a large glass screen formed of a plurality of plate glasses has been widely adopted in terms of daylighting and good visibility.
[0003]
In the example of the conventional plate glass support structure shown in FIG. 13, the side walls of a plurality of upright face plate glasses 1 are abutted to construct a glass wall surface that partitions the indoor A side and the outdoor B side of the building. Further, the rib plate glass 2 orthogonal to the face plate glass 1 is arranged along the abutting portion of the adjacent face plate glass 1 on the room A side of the face plate glass 1.
A sealing material 4 is filled between the butted portions of the adjacent face plate glass 1 and the face plate glass 1 and the rib plate glass 2, and the face plate glass 1 and the rib plate glass 2 are bonded to each other by the sealing material 4. .
[0004]
A plurality of insertion holes 5 for inserting bolts penetrating in the thickness direction of the glass plate are formed in the upper part of the rib plate glass 2 so as to be arranged almost horizontally.
Support members 6 made of angle steel fixed to the housing of the building are opposed to each other on both sides of the upper part of the rib plate glass 2 with the rib plate glass 2 sandwiched from both sides, and between the rib plate glass 2 and the support member 6. The buffer material 8 is interposed.
[0005]
A mounting bolt (not shown) is inserted through the insertion hole 7 formed in both support members 6 so as to face the insertion hole 5 of the rib plate glass 2 and the insertion hole 5 of the rib plate glass 2, The rib plate glass 2 is supported on the building frame via a nut (not shown) and a support member 6 screwed onto the mounting bolt. The upper and lower portions of the face plate glass 1 and the upper portion of the rib plate glass 2 are supported by a fixed frame 9 fixed to the housing.
[0006]
In this plate glass support structure, the supporting force of the support member 6 against the rib plate glass 2 is kept high by the fastening force of the mounting bolts and nuts, and a plurality of insertion holes 5 are formed in the upper portion of the rib plate glass 2, thereby Dispersion of stress acting on each insertion hole 5 when the plate glass 1 receives wind pressure is achieved.
[0007]
In another example of the conventional plate glass support structure shown in FIG. 14, both side ends and upper and lower ends of a plurality of upright face plate glasses 1 are butted and the four corner portions of the face plate glass 1 adjacent to each other are fastened to each other by a fixing member 10. And the glass wall surface which partitions off the indoor A side and the outdoor B side of a building is comprised.
Further, the upper and lower ends of a plurality of small glass plates 3 orthogonal to the face plate glass 1 are butted to constitute a rib plate glass 2 that is continuous in the vertical direction, and the rib plate glass 2 is arranged in the vertical direction on the room A side of the face plate glass 1. It arrange | positions so that the butt | matching part of this face plate glass 1 extended in the whole length may be followed.
[0008]
A sealing material 4 is filled between the adjacent face plate glasses 1 and between the face plate glass 1 and the small plate glass 3, and the face plate glass 1 and the rib plate glass 2 are bonded by the sealing material 4.
[0009]
A plurality of insertion holes 5 penetrating in the glass plate thickness direction are formed on the upper and lower sides of the abutting portion of the small glass 3 so as to be aligned along the abutting portion. On both the left and right sides of the butted portion of the small glass 3, plate-like connecting members 11 are opposed to each other with the small glass 3 interposed therebetween, and a buffer material 8 is interposed between the small glass 3 and the connecting member 11. .
[0010]
A mounting bolt (not shown) is inserted into the insertion hole 7 formed in both the connecting members 11 so as to face the insertion hole 5 of the small glass 3 and the insertion hole 5 of the small glass 3, Through the nut (not shown) screwed to the mounting bolt and the connecting member 11, the small glass 3 adjacent vertically is connected to each other to form the rib glass 2. The fixing member 10 described above is attached to the connecting member 11.
The lower portions of the face plate glass 1 and the rib plate glass 2 are supported by a fixed frame 9 fixed to the housing, and the upper portion is also supported by a fixed frame 9 (not shown) fixed to the housing.
[0011]
In this plate glass support structure, the supporting force of the connecting member 11 to the small glass plate 3 is kept high by the fastening force of the mounting bolts and nuts, and a plurality of insertion holes 5 are formed in the upper and lower portions of the small glass plate 3. When the face plate glass 1 receives wind pressure, the stress acting on the insertion hole 5 of each small plate glass 3 is dispersed.
[0012]
[Problems to be solved by the invention]
However, in the conventional plate glass support structure, when the face plate glass 1 is subjected to a large wind pressure, the rib plate glass 2 or the small plate glass 3 constituting the rib plate glass 2 tries to deform together with the face plate glass 1. A large stress acts on the insertion hole 5. Thereby, there is a concern that the rib plate glass 2 or the small plate glass 3 constituting the rib plate glass 2 may be damaged.
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a plate glass support structure that can relieve stress on the insertion hole of the plate glass.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a plate glass by forming an insertion hole in the plate glass and a supporting member attached to a fixed structure and facing the plate glass, and inserting a bolt into the insertion hole. In the plate glass support structure for fastening the plate to the support member, a buffering ring formed of a material having a Young's modulus of 10,000 to 200,000 kgf / cm ² is inscribed in the plate glass insertion hole and fitted on the bolt. A plate glass support structure is provided.
[0014]
Also, a support member that is attached to the fixed structure and that supports the plate glass that is formed by inserting an insertion hole in the plate glass and the support member facing each other with the plate glass interposed therebetween, and fastening the plate glass to the support member by inserting a bolt into the insertion hole. In the structure, a buffer ring formed of a material having a Young's modulus of 10,000 to 200,000 kgf / cm ² is provided so as to be inscribed in the insertion hole of the plate glass. A position retaining ring formed of a material having an intermediate value of the forming material or a material having a Young's modulus equivalent to that of the bolt forming material is provided so as to be inscribed in the buffer ring and to be externally fitted to the bolt. A supporting structure for the flat glass is provided.
[0015]
Also, the outer diameter of the plate glass insertion portion of the bolt and the inner diameter of the buffer ring are formed in a tapered shape that gradually increases from one end to the other end, and the notch extending from one end to the other end of the buffer ring Provided is a plate glass support structure provided with a portion.
[0016]
Furthermore, the outer diameter of the position holding ring and the inner diameter of the buffer ring are formed in a tapered shape that gradually increases from one end to the other end, and each of the position holding ring and the buffer ring is provided from one end. Provided is a plate glass support structure provided with a notch extending to the other end.
[0017]
In addition, the plate glass is fastened to the support member by drilling an insertion hole in the support member and the plate glass, which is attached to the fixed structure and is opposed to each other with the plate glass interposed therebetween, and by inserting a bolt into the insertion hole. In the support structure, the inner diameter of the portion near the one end of the plate glass insertion hole is formed in the shape of a countersink that gradually expands toward one end, and the inner diameter of the portion near the one end formed of a material whose Young's modulus is significantly smaller than that of glass. A buffer ring whose outer diameter gradually increases in a tapered shape toward one end side is provided so as to be inscribed in the plate glass insertion hole and the non-inner diameter enlarged portion to be externally fitted to the bolt. Position where the outer diameter formed from a material that exhibits an intermediate value between the forming material and the bolt forming material, or a material whose Young's modulus is equivalent to that of the bolt forming material, gradually increases in a tapered shape toward one end. The lifting ring, provides a support structure of the glass sheet which is provided so as to fitted to the inscribed and bolts to the inner diameter enlarged portion of the buffer ring.
[0018]
In addition, the plate glass is fastened to the support member by drilling an insertion hole in the support member and the plate glass, which is attached to the fixed structure and is opposed to each other with the plate glass interposed therebetween, and by inserting a bolt into the insertion hole. In the support structure, the inner diameter of each portion near the end of the plate glass insertion hole is formed in the shape of a countersink that gradually expands toward each end, and the portion closer to one end is made of a material whose Young's modulus is significantly smaller than that of glass. Two buffering rings whose inner diameter and outer diameter gradually increase in a tapered shape toward one end side are provided so as to be inscribed in the plate glass insertion hole and the non-inner diameter enlarged portion to be externally fitted to the bolt. The outer diameter formed by a material having an intermediate value between the buffer ring forming material and the bolt forming material, or a material whose Young's modulus is equivalent to the bolt forming material, gradually increases in a tapered shape toward one end. The position holding ring, to provide a support structure of the glass sheet which is provided so as to fitted to the inscribed to the inner diameter enlarged portion and the bolt of each buffer ring.
Moreover, the support structure of the said plate glass which interposed the adhesive bond layer between the insertion hole of the plate glass and the buffer ring is provided.
[0019]
In the plate glass support structure of the present invention, when the plate glass is displaced, the buffering ring interposed between the inner peripheral surface of the plate glass insertion hole and the outer peripheral surface of the mounting bolt is deformed, and the plate glass is displaced. The stress acting on the inner peripheral surface of the insertion hole is relaxed.
By interposing the position holding ring between the buffering ring and the bolt, the displacement of the plate glass due to the temporal change of the buffering ring is suppressed.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view of a principal part showing a first example of an embodiment of a plate glass support structure of the present invention, and FIG. 2 is an exploded perspective view of a buffer ring and bolts related to FIG.
FIG. 3 is a cross-sectional view of an essential part showing a second example of the embodiment of the support structure for a glass sheet of the present invention, and FIG. 4 is an exploded perspective view of a buffer ring, a position holding ring, a bolt and the like related to FIG. is there.
FIG. 5 is a cross-sectional view of an essential part showing a third example of the embodiment of the plate glass support structure of the present invention, and FIG. 6 is an exploded perspective view of a buffer ring and bolts related to FIG.
FIG. 7 is a cross-sectional view of an essential part showing a fourth example of the embodiment of the support structure for a plate glass of the present invention, and FIG. 8 is an exploded perspective view of a buffer ring, a position holding ring, a bolt and the like related to FIG. is there.
FIG. 9 is a cross-sectional view of a principal part showing a fifth example of the embodiment of the support structure for the glass sheet of the present invention, and FIG. 10 is an exploded perspective view of a buffer ring, a position holding ring, a bolt and the like related to FIG. is there.
FIG. 11 is a cross-sectional view of an essential part showing a sixth example of the embodiment of the support structure for the plate glass of the present invention, and FIG. 12 is an exploded perspective view of a buffer ring, a position holding ring, a bolt and the like related to FIG. is there.
1-12, the part which attached | subjected the mutually same code | symbol represents the same thing, and the part which attached | subjected the same code | symbol mutually in FIGS. 13-14 represents the same thing.
[0021]
In the plate glass support structure shown in FIGS. 1 and 2, the buffer ring 12 is inserted into the insertion hole 5 of the rib plate glass 2 so as to be inscribed therein, and the buffer glass is interposed between the both side surfaces of the rib plate glass 2 and each support member 6. A washer 23 is interposed.
Further, the mounting bolt 21 is inserted into the insertion hole 7, the buffer washer 23 and the buffer ring 12 of the support member 6, and the nut 22 screwed into the mounting bolt 21 is tightened, whereby the rib plate glass 2 is fixed to the buffer washer. A pair of support members 6 are sandwiched through 23.
[0022]
The buffer ring 12 is made of a material having a Young's modulus that is significantly smaller than the Young's modulus of about 730,000 kgf / cm ^{2 of} ordinary soda lime silicate glass. For example, it is preferable to use a buffer ring selected from a material having a Young's modulus of about 10,000 to 200,000 kgf / cm ² . Examples of such materials include engineering plastics having excellent durability such as polyacetal resins and polycarbonate resins.
[0023]
When the buffer ring 12 is formed of a material having a Young's modulus satisfying such conditions, the buffer ring 12 is adapted to a minute processing flaw on the inner peripheral surface of the insertion hole 5 and the rib plate glass 2 is displaced. It has been found from experiments and analysis results that the buffer ring 12 itself is deformed to relieve the stress acting on the insertion hole 5.
[0024]
In the illustrated example, a polyacetal resin (for example, Duracon (trade name) manufactured by Polyplastics Co., Ltd.) having a Young's modulus of 28,800 kgf / cm ² is used as a material for forming the buffer ring 12.
Further, if the buffer ring 12 is excessively thick, there is a concern that the buffer ring 12 may be deformed with time. Therefore, the buffer ring 12 has a thickness of about 0.3 to 2 mm.
[0025]
3 and 4, the buffer ring 12 is inserted so as to be inscribed in the insertion hole 5 of the rib plate glass 2, and the position holding ring 13 is inserted so as to be inscribed in the buffer ring 12. A buffer washer 23 is interposed between both side surfaces of the rib plate glass 2 and each support member 6.
Further, a mounting bolt 21 is inserted into the insertion hole 7 of the support member 6, the buffer washer 23 and the position holding ring 13, and the nut 22 screwed into the mounting bolt 21 is tightened, whereby the rib plate glass 2 is buffered. The pair of support members 6 are sandwiched through washers 23.
[0026]
The position holding ring 13 is a material whose Young's modulus exhibits an intermediate value between the forming material of the buffering ring 12 and the forming material of the mounting bolt 21, or a material whose Young's modulus exhibits the same value as the forming material of the mounting bolt 21, It is formed with.
For example, when stainless steel with high durability and high strength is used as the mounting bolt, the Young's modulus of the stainless steel is about 2,100,000 kgf / cm ² , so that the position holding ring 13 is 730,000-200, A material having a Young's modulus of about 000 kgf / cm ² can be preferably used. For example, mild steel or stainless steel with aluminum and about 2,100,000kgf / cm ² of about Young's modulus with approximately 700,000kgf / cm ² of about Young's modulus can be mentioned as optimal.
[0027]
When the position retaining ring 13 is formed of a material having a Young's modulus satisfying such conditions, the displacement of the rib plate glass 2 due to the temporal deformation of the buffer ring 12 is suppressed, and the insertion hole 5 by the buffer ring 12 is also inserted. From the experiment and analysis results, it was found that the stress relaxation function of the material does not decrease.
In the illustrated example, an aluminum alloy having a Young's modulus of 719,000 kgf / cm ² is used as a material for forming the position holding ring 13.
The thickness of the position holding ring 13 is about 1 to 4 mm.
[0028]
5 and 6, instead of the buffer ring 12 shown in FIGS. 1 and 2, a notch portion in which the inner diameter gradually increases from one end to the other end and extends from one end to the other end. A buffer ring 14 having 16 is used. Further, the outer diameter of the plate glass insertion portion of the mounting bolt 21 is formed in a taper shape corresponding to the buffer ring 14. The buffer ring 14 is formed of the same material as the buffer ring 12 described above, and is inserted into the insertion hole 5 of the rib plate glass 2.
[0029]
Further, a mounting bolt 21 is inserted into the insertion hole 7 of the support member 6, the buffer washer 23, and the buffer ring 14, and the nut 22 screwed into the mounting bolt 21 is tightened, whereby the rib plate glass 2 is buffered. The pair of support members 6 are sandwiched through washers 23.
[0030]
When the nut 22 screwed to the mounting bolt 21 is tightened, the respective taper surfaces of the mounting bolt 21 and the buffer ring 14 slide relative to each other in the axial direction, and the buffer ring 14 is pushed and expanded in the radial direction. Formation of a fine gap between the inner peripheral surface of the hole 7 and the buffer ring 14 is suppressed.
In this way, if the formation of a gap between the inner peripheral surface of the insertion hole 7 and the buffering ring 14 is suppressed, the rib plate glass 2 becomes difficult to displace, and the stress on the insertion hole 7 is effectively relieved. It was found by experiments and analysis results.
[0031]
7 and FIG. 8, in place of the buffer ring 12 and the position holding ring 13 shown in FIGS. 3 and 4, the buffer ring 14 described above, and gradually from one end to the other end. A position holding ring 15 having a notch 17 having an inner diameter enlarged and extending from one end to the other end is used. As shown in the drawing, the buffer ring 14 and the position holding ring 15 have the same inclined surface in which the inner diameter gradually increases in the opposite direction from one end to the other end, and each has a wedge shape in cross section. Both are eating.
The position holding ring 15 is formed of the same material as the position holding ring 13 described above, and is inserted so as to be inscribed in the buffer ring 14.
[0032]
Further, a mounting bolt 21 is inserted into the insertion hole 7 and the position holding ring 15 of the support member 6, and a nut 22 screwed into the mounting bolt 21 is tightened to fix the rib plate glass 2 via a buffer washer 23. It is supported by a pair of support members 6.
When the nut 22 screwed into the mounting bolt 21 is tightened, the respective tapered surfaces of the buffer ring 14 and the position holding ring 15 slide relative to each other in the axial direction, and the buffer ring 14 is pushed in the radial direction. It is widened and formation of a fine gap between the inner peripheral surface of the insertion hole 7 and the buffer ring 14 is suppressed.
[0033]
Therefore, like the plate glass support structure in FIGS. 5 and 6, the rib plate glass 2 is less likely to be displaced, the stress on the insertion hole 7 is effectively relieved, and the ribs caused by changes over time of the buffer ring 14 The displacement of the plate glass 2 is also suppressed.
[0034]
9 and 10, the inner diameter of the portion near the one end of the insertion hole 5 of the rib plate glass 2 is formed in the shape of a countersink that gradually expands toward the one end side.
A buffering ring 19 whose inner diameter and outer diameter near the one end are tapered toward one end side is attached to the buffer ring 19, the outer diameter expanding part is inscribed in the countersunk part 18 of the insertion hole 5, and the non-inner diameter expanding part is attached It is provided so as to be fitted around the bolt 21.
[0035]
A position holding ring 20 whose outer diameter gradually increases toward one end side is provided so as to be inscribed in the inner diameter enlarged portion of the buffer ring 19 and to be fitted on the mounting bolt 21.
The buffer ring 19 is made of the same material as the buffer ring 12, and the position holding ring 20 is made of the same material as the position holding ring 13.
[0036]
Further, a mounting bolt 21 is inserted into the insertion hole 7 of the support member 6, the buffer washer 23, the buffer ring 19, and the position holding ring 20, and a nut 22 screwed into the mounting bolt 21 is tightened to The plate glass 2 is supported by a pair of support members 6 via a buffer washer 23.
When the nut 22 screwed to the mounting bolt 21 is tightened, the respective taper surfaces of the buffer ring 19 and the position retaining ring 20 slide relative to each other in the axial direction, and the outer diameter of the buffer ring 19 increases. The portion is expanded in the radial direction, and formation of a fine gap between the countersunk portion 18 of the insertion hole 7 and the buffer ring 19 is suppressed.
[0037]
Therefore, like the plate glass support structure in FIGS. 5 and 6, the rib plate glass 2 is less likely to be displaced, the stress on the insertion hole 7 is effectively relieved, and the ribs resulting from the secular change of the buffer ring 19 The displacement of the plate glass 2 is also suppressed.
[0038]
In the plate glass support structure in FIG. 11 and FIG. 12, in addition to the portion near one end of the insertion hole 5 of the rib plate glass 2, the inner diameter of the portion near the other end of the insertion hole 5 is gradually enlarged toward the other end side. It is formed in a hole shape. Further, a buffer ring 19 is inserted into the countersink-shaped portion 18 near the other end, and a position holding ring 20 is inserted into an inner diameter enlarged portion of the buffer ring 19.
[0039]
When the nut 22 screwed to the mounting bolt 21 is tightened, the tapered surfaces of the buffer ring 19 and the position holding ring 20 slide relative to each other in the axial direction, and the outer diameter enlarged portion of the buffer ring 19 Is expanded in the radial direction, and the formation of a fine gap between the countersunk portion 18 of the insertion hole 7 and the buffer ring 19 is suppressed.
[0040]
Therefore, like the plate glass support structure in FIGS. 9 and 10, the rib plate glass 2 is less likely to be displaced, the stress on the insertion hole 7 is effectively relieved, and the ribs resulting from the secular change of the buffer ring 19 The displacement of the plate glass 2 is also suppressed.
[0041]
Further, in the plate glass support structure of the present invention, if a gap formed between the plate glass insertion hole and the buffer ring is filled with an adhesive such as epoxy resin, and an adhesive layer is interposed between the two, the insertion The strength of the hole is increased. That is, since there are fine irregularities caused by drilling in the processed surface of the insertion hole of the plate glass, if it directly hits the bolt, stress concentration occurs and it is easy to break. Therefore, if the processing surface of the insertion hole of the plate glass into which the buffer ring is inserted is filled with an adhesive such as epoxy resin, the bonding area is further increased and the hole strength is further improved.
[0042]
2 and 4, between the insertion hole 5 and the buffering ring 12, in FIGS. 6 and 8, between the insertion hole 5 and the buffering ring 14, and in FIGS. 5 and the countersunk-shaped portion 18 and the buffer ring 19 can be provided with a resin adhesive layer to improve the hole strength.
[0043]
The plate glass support structure of the present invention is not limited to the above-described embodiment, and the present invention is applied to the fastening portion between the small plate glass and the connecting member, and the buffer ring and the position holding ring are the types described above. Modifications can be made without departing from the gist of the present invention.
[0044]
【The invention's effect】
As described above, the plate glass support structure of the present invention can exhibit various excellent effects as described below.
(1) Since the buffering ring interposed between the inner peripheral surface of the plate glass insertion hole and the outer peripheral surface of the mounting bolt is deformed when the plate glass is displaced, the inner periphery of the insertion hole is accompanied by the displacement of the plate glass. The stress acting on the surface can be relaxed.
(2) When the position holding ring is interposed between the buffering ring and the bolt, the displacement of the plate glass due to the temporal change of the buffering ring can be suppressed.
(3) When the mutual contact surface of the bolt and the buffer ring, the position holding ring and the buffer ring, or the buffer ring and the plate glass insertion hole is tapered, the buffer ring and the insertion hole are tightened by tightening the bolt. The formation of fine gaps between them is suppressed, the rib plate glass is hardly displaced, and the stress on the insertion hole is effectively relieved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part showing a first example of an embodiment of a support structure for a glass sheet of the present invention.
2 is an exploded perspective view of a buffer ring and bolts related to FIG. 1; FIG.
FIG. 3 is a cross-sectional view of an essential part showing a second example of the embodiment of the support structure for the glass sheet of the present invention.
4 is an exploded perspective view of a buffer ring, a position holding ring, a bolt, and the like related to FIG. 3;
FIG. 5 is a cross-sectional view of a principal part showing a third example of the embodiment of the support structure for plate glass of the present invention.
6 is an exploded perspective view of a buffer ring and bolts related to FIG. 5. FIG.
FIG. 7 is a cross-sectional view of a principal part showing a fourth example of the embodiment of the support structure for the glass sheet of the present invention.
8 is an exploded perspective view of a buffer ring, a position holding ring, a bolt, and the like related to FIG. 7;
FIG. 9 is a cross-sectional view of an essential part showing a fifth example of the embodiment of the support structure for the glass sheet of the present invention.
10 is an exploded perspective view of a buffer ring, a position holding ring, a bolt, and the like related to FIG. 9. FIG.
FIG. 11 is a cross-sectional view of an essential part showing a sixth example of the embodiment of the support structure for glass sheets of the present invention.
12 is an exploded perspective view of a buffer ring, a position holding ring, a bolt, and the like related to FIG. 11. FIG.
FIG. 13 is a perspective view showing an example of a conventional plate glass support structure.
FIG. 14 is a perspective view showing another example of a conventional plate glass support structure.
[Explanation of symbols]
2: rib plate glass 5, 7: insertion hole 6: support members 12, 14, 19: buffering rings 13, 15, 20: position retaining rings 16, 17: notch 21: mounting bolt (bolt)

Claims

In a support structure for a plate glass, which is attached to a fixed structure and has a through hole formed in the plate glass and the support member facing each other with the plate glass interposed therebetween, and the plate glass is fastened to the support member by inserting a bolt into the insertion hole. A shock absorbing ring formed of a material having a Young's modulus of 10,000 to 200,000 kgf / cm ² is provided so as to be inscribed in a plate glass insertion hole and to be externally fitted to a bolt. Support structure.

The outer diameter of the plate glass insertion portion of the bolt and the inner diameter of the buffer ring are formed in a tapered shape that gradually increases from one end to the other end, and the buffer ring is provided with a notch extending from one end to the other end. The plate glass supporting structure according to claim 1, wherein:

In a support structure for a plate glass, which is attached to a fixed structure and has a through hole formed in the plate glass and the support member facing each other with the plate glass interposed therebetween, and the plate glass is fastened to the support member by inserting a bolt into the insertion hole. A buffer ring formed of a material having a Young's modulus of 10,000 to 200,000 kgf / cm ² is provided so as to be inscribed in the insertion hole of the plate glass, and a Young's modulus is formed of a buffer ring forming material and a bolt forming material. A position retaining ring formed of a material exhibiting an intermediate value of the above or a material having a Young's modulus equivalent to that of the bolt forming material is provided so as to be inscribed in the buffer ring and externally fitted to the bolt. A plate glass support structure characterized by the above.

The outer diameter of the position holding ring and the inner diameter of the buffer ring are formed in a tapered shape that gradually increases from one end to the other end, and each of the position holding ring and the buffer ring extends from one end to the other end. The plate glass support structure according to claim 3 , wherein a notch is provided.

A support structure for a plate glass that is attached to a fixed structure and that has a plate glass sandwiched between the support member and the plate glass facing each other with the plate glass interposed therebetween, and the plate glass is fastened to the support member by inserting a bolt into the insertion hole. In the plate glass, the inner diameter of the portion near the one end of the glass plate insertion hole is formed in the shape of a countersink that gradually expands toward the one end side, and the inner diameter and outer portion of the portion near the one end formed of a material whose Young's modulus is significantly smaller than that of glass A buffer ring whose diameter gradually increases in a tapered shape toward one end side is provided so that it is inscribed in the plate glass insertion hole and the non-inner diameter enlarged portion is externally fitted to the bolt. For holding the position where the outer diameter formed from a material that exhibits an intermediate value between the bolt and the bolt forming material, or a material whose Young's modulus is equivalent to the bolt forming material, gradually increases in a tapered shape toward one end. The support structure of the glass sheet, wherein a ring, arranged so as to fitted to the inscribed to the inner diameter enlarged portion and the bolt of the buffer ring.

A support structure for a plate glass that is attached to a fixed structure and that has a plate glass sandwiched between the support member and the plate glass facing each other with the plate glass interposed therebetween, and the plate glass is fastened to the support member by inserting a bolt into the insertion hole. The inner diameter of the portion near each end of the plate glass insertion hole is formed in the shape of a countersink that gradually expands toward each end, and the inner diameter near the one end formed of a material whose Young's modulus is significantly smaller than that of glass. Two buffering rings whose outer diameter gradually increases in a tapered shape toward one end are provided so as to be inscribed in the plate glass insertion hole and the non-inner diameter enlarged part to be externally fitted to the bolt. Position where the outer diameter formed by a material having an intermediate value between the ring forming material and the bolt forming material, or a material having a Young's modulus equivalent to that of the bolt forming material, gradually increases in a tapered shape toward one end. The support structure of the glass sheet, characterized in that the lifting ring, provided so as to fitted to the inscribed to the inner diameter enlarged portion and the bolt of each buffer ring.

The plate glass support structure according to claim 1, 2, 3, 4, 5 or 6, wherein an adhesive layer is interposed between the plate glass insertion hole and the buffer ring.