JP2001132351A - Supporting structure for fireproof glass pane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently hold a fireproof glass pane by a simple means in a fire and to support the glass pane softened by heat without releasing it from a frame material. SOLUTION: In the structure for supporting the fireproof glass pane to the heat resistant frame material in a fireproof door and a fireproof window, a trapezoidal-section metal A fixedly installed in a vertical side, increasing its thickness downward, and having an inclined face relative to the vertical glass pane face, and a trapezoidal-section metal B touching the glass pane, reducing its thickness downward, and having an inclined face in slide contact with the inclined face of the trapezoidal section metal A are interposed between the vertical side in a glass pane fitting recess of the frame material and the glass pane. Suitably, a projection is added to the glass pane contact region of the trapezoidal metal B.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、熱により軟化し、
枠材、特に枠材上辺から脱落するようなガラス板、例え
ばソーダ石灰シリカ系高強化ガラス等の防火ガラス板を
枠材に支持することにより、火災時に建屋内または外に
発生した火煙の他方の建屋外または内への吹出しを防止
する防火ガラス板の支持構造に関する。The present invention relates to a method for softening by heat,
By supporting the frame material, especially a glass plate that falls off from the upper side of the frame material, for example, a fire-resistant glass plate such as soda-lime-silica-based high-strength glass, on the frame material, the other of the smoke generated inside or outside the building during a fire The present invention relates to a support structure for a fireproof glass plate for preventing blowing out of or inside a building.

【０００２】[0002]

【従来技術および解決すべき課題】ソーダ石灰シリカ系
ガラス板を著しく強化させることにより、それを加熱し
た際の熱応力に抗して堅牢性を維持し、破断して火煙が
一方から他方側へ吹出すような不具合を防止することが
できる。2. Description of the Related Art A soda-lime-silica glass sheet is significantly strengthened so as to maintain its robustness against thermal stress when it is heated, and to break to cause smoke from one side to the other side. It is possible to prevent a problem such as blowing to the outside.

【０００３】但し極く特殊のガラス組成物を除けば、ソ
ーダ石灰シリカ系ガラスをはじめとする通常のガラス組
成物はその軟化点が750℃以下程度であり、これに対し
建設省告示による甲種防火戸における加熱温度(加熱炉
内温度)−時間は925℃−60分であるため、前記加熱によ
る破断、破損を免れたとしても軟化点付近またはそれ以
上の高温加熱に際してはガラス板が軟化して枠材から脱
落し、該部からの火煙の吹出しを防止することはできな
い。[0003] However, except for a very special glass composition, ordinary glass compositions such as soda-lime-silica glass have a softening point of about 750 ° C or less. Heating temperature in the door (heating furnace temperature)-time is 925 ℃ -60 minutes, so the glass plate is softened during high temperature heating near or above the softening point even if the breakage due to the heating was avoided, even if the breakage was avoided. It cannot be prevented from dropping from the frame material and blowing out the smoke from the portion.

【０００４】高温加熱しても前記ガラス板の枠材からの
脱落を防ぐうえで、予めガラス板周縁部に貫通孔を設
け、該貫通孔に支持ピンを挿通して枠材に係止させ、脱
落を防ぐ設計工夫は公知であるが、貫通孔を設けた場合
のガラスの均一強化は困難であり、加熱過程で破断を招
き易く、また貫通孔を設ける工程自体手間、時間を要
し、コストを高騰する。In order to prevent the glass plate from falling off the frame material even when heated at a high temperature, a through hole is provided in advance in the peripheral portion of the glass plate, a support pin is inserted into the through hole, and the glass plate is engaged with the frame material. Although a design method for preventing the falling-off is known, it is difficult to uniformly strengthen the glass when the through-hole is provided, easily breaks in the heating process, and the process itself of providing the through-hole requires time, time, and cost. Soaring.

【０００５】また、枠材のガラス板周縁部を嵌入する凹
所には加熱膨張性充填材を介在させ、加熱時その膨張に
よりガラス板周縁部を挟圧する手段も公知であるが、前
記充填材自体軟化性材料であるため、軟化したガラス板
の脱落を防止するのは困難である。There is also known a means in which a heat-expandable filler is interposed in a concave portion of the frame material into which the glass plate peripheral edge is fitted, and the glass plate peripheral edge is pressed by expansion when heated. Since the material itself is a softening material, it is difficult to prevent the softened glass plate from falling off.

【０００６】特開昭61−14384号公報には、枠材凹所と
ガラス板周縁部の一側面との間に熱により拡張する物質
を配置し、その拡張作用によりシール部材を介してガラ
ス板周縁部を押圧する構成で、前記拡張する物質として
発泡性膨脹材、バネ材料、バイメタル片、ガス圧を利用
した拡張材等が開示されている。上記開示例はガラス板
を平面で押圧するものであり、充分な押圧、保持作用を
得るうえではそれなりの設計、工夫が必要であって、ま
た、その分コストを高騰する。In Japanese Patent Application Laid-Open No. 61-14384, a substance which expands by heat is arranged between a recess of a frame material and one side surface of a peripheral portion of a glass plate. There are disclosed a foaming expandable material, a spring material, a bimetal piece, an expanding material using gas pressure, and the like as the expanding material, which is configured to press a peripheral portion. In the above disclosed example, the glass plate is pressed with a flat surface, and to obtain a sufficient pressing and holding action, a certain design and contrivance are required, and the cost increases accordingly.

【０００７】特開平７−324557号公報には枠材凹所に配
した断面Ω型バイメタル製の挟持部材の先端域でガラス
板周縁部を挟圧する構成が、特開平８−158749号公報に
は枠材凹所に接して配した金属製保持部材の先端部でガ
ラス板周縁縁部を挟圧する構成が開示されている。それ
らはバネ作用でガラス板を挟圧するものであるが、高温
においては脆化し易く、充分な保持力を維持するのが困
難と思料されが、また加熱下位置ずれを生じ易い。Japanese Patent Application Laid-Open No. Hei 7-324557 discloses a configuration in which a peripheral portion of a glass plate is pressed at the distal end region of a holding member made of a bimetallic cross section disposed in a frame material recess. There is disclosed a configuration in which a distal end of a metal holding member disposed in contact with a frame material recess presses a peripheral edge of a glass plate. Although they press the glass plate by the action of a spring, they are easily embrittled at high temperatures and are considered to be difficult to maintain a sufficient holding force, but are liable to be displaced under heating.

【０００８】特開平７−259447号公報には、枠材および
押縁からなる凹所にガラス板周縁部を保持するもので、
ガラス板の一方の側面は受け不燃材を介して枠材に保持
され、他方の側面は押え不燃材、押え金属板を介して押
縁に螺合した押え螺子の圧力で保持される構成が開示さ
れているが、押え螺子は熱を受ける間、ガラス板の厚み
変動等に応じて進退可能に設けるものではなく、軟化し
薄厚となったガラスを保持する作用はない。Japanese Patent Application Laid-Open No. 7-259447 discloses a technique in which a glass plate peripheral portion is held in a recess formed by a frame material and a ridge.
A configuration is disclosed in which one side surface of a glass plate is held by a frame material via a receiving non-combustible material, and the other side surface is held by a pressing non-combustible material, the pressure of a pressing screw screwed to a pressing edge via a pressing metal plate. However, the holding screw is not provided so as to be able to advance and retreat in response to a change in the thickness of the glass plate while receiving heat, and has no function of holding the softened and thin glass.

【０００９】本発明は、上記従来技術の不具合を解消
し、容易な手段で防火ガラス板を充分保持できる防火ガ
ラス板の支持構造を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a supporting structure for a fireproof glass plate which can solve the above-mentioned problems of the prior art and can sufficiently hold the fireproof glass plate by easy means.

【００１０】[0010]

【課題を解決するための手段】本発明は、防火扉、防火
窓における耐熱性枠材に防火ガラス板を支持する構造に
おいて、前記枠材のガラス板取付け凹所における縦辺と
ガラス板との間には、前記縦辺に固設し、下方に向け厚
みを増大し、垂直なガラス板面に対し傾斜面を有する断
面が台形状の金具Ａと、ガラス板面に接し、下方に向け
厚みを減少し、前記断面が台形状の金具Ａの傾斜面に摺
接する傾斜面を有する断面が台形状の金具Ｂを介設した
防火ガラス板の支持構造である。SUMMARY OF THE INVENTION The present invention relates to a structure for supporting a fire-resistant glass plate on a heat-resistant frame material of a fire door or a fire window. In between, it is fixed to the vertical side, the thickness is increased downward, and a cross section having a trapezoidal cross section having an inclined surface with respect to the vertical glass plate surface is in contact with the glass plate surface, and the thickness is downward. Is a support structure for a fireproof glass plate in which a cross-section having a trapezoidal fitting B having an inclined surface that slides on the inclined surface of the trapezoidal fitting A is provided.

【００１１】更に、前記断面が台形状の金具Ｂにおける
ガラス板面との接触域に、突起を付設するものである。Further, a projection is provided in a contact area with the glass plate surface of the metal fitting B having a trapezoidal cross section.

【００１２】前記枠材におけるガラス板取付け凹所を封
止するための耐熱性封止材および／または耐熱性充填材
を配設するのが好ましい。It is preferable to provide a heat-resistant sealing material and / or a heat-resistant filler for sealing the glass plate mounting recess in the frame material.

【００１３】[0013]

【発明の実施の形態】本発明は、先述の如くソーダ石灰
シリカ系ガラス等を高強化した防火ガラス板であって、
軟化点が建設省告示による甲種防火戸における加熱温
度、すなわち925℃）に到らないガラス板に好適に採用
できるものであるが、勿論軟化点の高い硼珪酸系ガラス
あるいはそれを強化したガラス、石英ガラス、結晶化ガ
ラス、それらガラスの複層ガラス、ガラス板間に水性ゲ
ルを内在した複層タイプのガラスでいわゆるゲル入り防
火ガラス等においても適用できるものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fire-resistant glass plate in which soda-lime-silica glass or the like is highly strengthened as described above,
The softening point can be suitably used for a glass sheet whose temperature does not reach the heating temperature of the Class A fire door according to the notification of the Ministry of Construction, that is, 925 ° C). Quartz glass, crystallized glass, a multi-layer glass of these glasses, a multi-layer glass having an aqueous gel interposed between glass plates, and can be applied to so-called gel-containing fireproof glass and the like.

【００１４】本発明は、鉄鋼等の前記加熱温度に耐え、
変形し難い耐熱性枠材を用い、特に防火ガラス板の上辺
を支持するうえで好適に採用され、例えば防火ガラス板
の下辺や両縦辺においては、枠材のガラス板取付け凹所
と前記各辺の間にシリコーン等の難燃性材料で接着また
は粘着し、シールすれば充分である。The present invention withstands the heating temperature of steel or the like,
Using a heat-resistant frame material that is not easily deformed, it is particularly suitably used to support the upper side of the fire-resistant glass plate.For example, on the lower side and both vertical sides of the fire-resistant glass plate, the glass plate mounting recess of the frame material and It is sufficient to adhere or stick with a flame-retardant material such as silicone between the sides and to seal them.

【００１５】以下図面に基づき本発明を説明する。図１
は、本発明の防火ガラス板の支持構造における枠材と防
火ガラス板の係わりを示す側断面図である。枠材１は枠
材本体１−aと押縁１−bとからなり、これらで形成する
ガラス板取付け凹所７の両縦辺１−c、１−dの間に、例
えば高強化ソーダ石灰系ガラスからなる防火ガラス板２
の端縁部（図においては上辺部）が挿入され、取付けら
れる。具体的にはガラス板取付け凹所７における縦辺１
−c、１−d夫々に、下方に向け厚みを増大し、ガラス板
面に対し傾斜面を有する断面が台形状の耐熱金属製、例
えば鋼製の金具Ａ（以下台形状の金具Ａという）４をビ
ス等の鋲着手段により固設する。台形状の金具Ａ ４の
内側、すなわち防火ガラス板２の側には、ガラス板面に
接し、下方に向け厚みを減少し、前記台形状の金具Ａの
傾斜面に摺接する傾斜面を有する断面が台形状の耐熱金
属製、例えば鋼製の金具Ｂ（以下台形状の金具Ｂとい
う）３を配する。なお、台形状の金具Ｂ ４は図の如く
一対あり、台形状の金具Ａ ４、および防火ガラス板２
に係止し、フリー状態に配されるものである。更に、前
記一対の台形状の金具Ｂ ３におけるガラス板面との接
触域に、突起３−aを付設するものである。The present invention will be described below with reference to the drawings. FIG.
FIG. 3 is a side sectional view showing the relationship between the frame material and the fire prevention glass plate in the support structure for a fire prevention glass plate of the present invention. The frame member 1 is composed of a frame member main body 1-a and a pressing edge 1-b, and a high-strength soda-lime-based material is provided between the two vertical sides 1-c and 1-d of the glass plate mounting recess 7 formed by these. Fire protection glass plate 2 made of glass
(The upper side in the figure) is inserted and attached. Specifically, the vertical side 1 in the glass plate mounting recess 7
In each of -c and 1-d, the thickness is increased downward, and a cross section having an inclined surface with respect to the glass plate surface is made of a heat-resistant metal having a trapezoidal cross section, for example, a steel metal fitting A (hereinafter, referred to as a trapezoidal fitting A). 4 is fixedly attached by means of tacking screws or the like. Inside of the trapezoidal fitting A4, that is, on the side of the fire prevention glass plate 2, a cross section having an inclined surface that contacts the glass plate surface, decreases in thickness downward, and slides on the inclined surface of the trapezoidal fitting A. A metal fitting B (hereinafter, referred to as a trapezoidal metal fitting B) 3 made of a trapezoidal heat-resistant metal, for example, steel. The trapezoidal bracket B4 has a pair as shown in the figure, and the trapezoidal bracket A4 and the fireproof glass plate 2 are provided.
And is arranged in a free state. Further, a projection 3-a is provided in a contact area of the pair of trapezoidal fittings B3 with the glass plate surface.

【００１６】防火ガラス板２は、前記一対の台形状の金
具Ｂ ３に固着手段を有することなく挟持されるかたち
となるが、加熱の前段階でガラス板が膨脹する場合は、
それに応じてガラス板に接する台形状の金具Ｂ ３が上
方にずれ上がってその間隔を広げつつガラス板を挟持
し、加熱の後段階でガラス板が軟化した場合は台形状の
金具Ｂ ３がずれ下がるとともに、突起３−aがガラス板
面に貫入しすることにより、ガラス板の枠体１からの外
れ落ちを防ぐことができる。The fireproof glass plate 2 is sandwiched between the pair of trapezoidal fittings B3 without any fixing means. If the glass plate expands before heating,
Correspondingly, the trapezoidal metal fitting B3 in contact with the glass plate shifts upward and widens the gap, sandwiches the glass plate, and when the glass plate softens in the later stage of heating, the trapezoidal metal fitting B3 shifts. As the projections 3-a penetrate the glass plate surface as they go down, it is possible to prevent the glass plate from falling off the frame 1.

【００１７】台形状の金具Ａ ４、台形状の金具Ｂ ３の
下端（ガラス板面中央部側）と、枠材１におけるガラス
板取付け凹所７の下端（ガラス板面中央部側）の間の空
所には、前記ガラス板取付け凹所７を封着するための耐
熱性封止材５または耐熱性充填材６を配設し、望ましく
は耐熱性封止、充填材５、６双方を併存するのが好まし
い。耐熱性充填材６としては例えば無機繊維製シート、
マット片等からなり、これをシリコーン接着剤等により
ガラス板取付け凹所７における縦辺１−c（および１−
d）と、防火ガラス板２とに接着し固定する。耐熱性封
止材５は例えばシリコーン等のシール材からなり、前記
同様に接着、シールする。それら自体防火ガラス板の支
持、固定を強固とし、水分、塵等の前記ガラス板取付け
凹所７への侵入を防止するものである。Between the lower end of the trapezoidal bracket A 4 and the trapezoidal bracket B 3 (center of the glass plate surface) and the lower end of the glass plate mounting recess 7 in the frame 1 (center of the glass plate surface). Is provided with a heat-resistant sealing material 5 or a heat-resistant filler 6 for sealing the glass plate mounting recess 7; Preferably, they coexist. Examples of the heat-resistant filler 6 include inorganic fiber sheets,
A mat piece or the like is attached to the glass plate mounting recess 7 using a silicone adhesive or the like.
d) and the fireproof glass plate 2 are adhered and fixed. The heat-resistant sealing material 5 is made of a sealing material such as silicone, and adheres and seals as described above. By themselves, the support and fixing of the fireproof glass plate are strengthened, and the intrusion of moisture, dust, etc. into the glass plate mounting recess 7 is prevented.

【００１８】図２は台形状の金具Ａ ４、台形状の金具
Ｂ ３の斜視図であり、両台形状の金具Ｂ ３のガラス板
２との接触域に突起を配設し、図においてはジグザク状
に配した複数の突条３−aを横設することにより、ガラ
ス板２が熱軟化しずれ落ちるようなケースにおいても突
条３−aがガラス板面に貫入してこれを支持する。勿
論、突起、突条の形状は特定するものではなく、その数
もガラス板２がずれ落ちない程度に設計すればよい。FIG. 2 is a perspective view of a trapezoidal bracket A 4 and a trapezoidal bracket B 3. A projection is provided in a contact area between the trapezoidal bracket B 3 and the glass plate 2. By arranging a plurality of ridges 3-a arranged in a zigzag shape, the ridges 3-a penetrate and support the glass plate surface even in a case where the glass plate 2 is thermally softened and slips off. . Of course, the shapes of the projections and the ridges are not specified, and the number thereof may be designed so that the glass plate 2 does not slip off.

【００１９】図３は防火ガラス板と、台形状の金具Ａ
、Ｂとの位置関係を示す正面図（他の部材は省いてあ
る）であり、台形状の金具Ａ ４、台形状の金具Ｂ ３は
防火ガラス板２の上辺を複数箇所、図においては３箇所
において支持している。破線ａで囲った内側部分は防火
ガラス板２の枠材１に挿入されていない領域を示し、破
線ａ−一点鎖線ｂの間の領域８は耐熱性封止材５および
耐熱性充填材６による封着領域を示す。なお、防火ガラ
ス板２の下辺は枠材上に複数箇所設置した珪酸カルシウ
ム等よりなるセッティングブロック上に載置されるもの
であり、セッティングブロックの図示は省略する。FIG. 3 shows a fireproof glass plate and a trapezoidal metal fitting A.
FIG. 4 is a front view showing the positional relationship between the trapezoidal bracket A4 and the trapezoidal bracket B3 at a plurality of locations on the upper side of the fire-resistant glass plate 2, and FIG. We support in place. An inner portion surrounded by a broken line a indicates a region not inserted into the frame material 1 of the fireproof glass plate 2, and a region 8 between the broken line a and the dashed line b is formed by the heat-resistant sealing material 5 and the heat-resistant filler 6. 3 shows a sealing area. Note that the lower side of the fire prevention glass plate 2 is placed on a setting block made of calcium silicate or the like provided at a plurality of positions on the frame material, and illustration of the setting block is omitted.

【００２０】[0020]

【実施例】実施例 ： 幅500mm、高さ1000mm、厚み約６m
mのソーダ石灰系フロートガラスを糸面取り加工し、端
面および糸面を研磨したうえで熱強化炉において加熱急
冷し、表面圧縮応力がほぼ196MPAの均一に高強化された
防火ガラス板２を得た。これを上記実施形態で示した鋼
製枠１のガラス板取付け凹所７に取付け、ガラス板上辺
３箇所を台形状の金具Ａ ４、台形状の金具Ｂ ３で把持
し、またガラス板全周と枠材のガラス板取付け凹所７の
間はガラス繊維製充填材６、およびシリコーン製封止材
５により封着した。[Example] Example : Width 500mm, height 1000mm, thickness about 6m
m soda-lime-based float glass is chamfered, polished on the end face and the thread face, and then heated and quenched in a heat strengthening furnace to obtain a fire-resistant glass plate 2 having a surface compressive stress of approximately 196MPA, which is uniformly strengthened. . This is mounted on the glass plate mounting recess 7 of the steel frame 1 shown in the above embodiment, and the upper three sides of the glass plate are gripped by the trapezoidal bracket A 4 and the trapezoidal bracket B 3. The gap between the glass plate mounting recess 7 and the frame material was sealed with a glass fiber filler 6 and a silicone sealing material 5.

【００２１】上記実施例の防火ガラス板を建設省告示に
準ずる防火試験装置の開口部にセットし、甲種防火戸の
加熱基準に基づき60分−925℃に加熱した。加熱中ガラ
ス板が破損、破断し、火炎が貫通することもなく、ま
た、封着部からの火煙の発生も認められなかった。な
お、加熱過程終段においてガラス板が軟化し、板面の湾
曲も認められたがガラス板が枠体から脱落するような兆
候もなかった。The fireproof glass plate of the above example was set in the opening of a fire test apparatus according to the notification of the Ministry of Construction, and heated to -925 ° C. for 60 minutes based on the heating standard of Class A fire door. During the heating, the glass plate was broken or broken, the flame did not penetrate, and no generation of smoke from the sealing portion was observed. In the final stage of the heating process, the glass plate was softened and the plate surface was curved, but there was no sign that the glass plate dropped off from the frame.

【００２２】加熱終了し放冷後、規定に則り規定重量の
重錘をガラス板外側面に衝突させたが、ガラス板の破断
や枠材からの脱離もなく、甲種防火戸として適用できる
ものであることが分かった。After the heating and cooling down, a weight having a specified weight was caused to collide with the outer surface of the glass sheet in accordance with the rules, but the glass sheet was not broken or detached from the frame material and could be used as a class A fire door. It turned out to be.

【００２３】比較例 ： 実施例同様の防火ガラス板、枠
材を用い、ガラス板を把持金具で把持することなく、実
施例同様に封着したうえで、防火試験に供した。 Comparative Example : The same fireproof glass plate and frame material as in the example were used, and the glass plate was sealed in the same manner as in the example without being held by a holding metal fitting, and then subjected to a fireproof test.

【００２４】実施例同様に加熱したところ、加熱開始後
30分−840℃においてガラス板の上辺が枠材からずれ落
ち、該部から加熱炉外への火炎の噴出が認められ、試験
を中止した。本比較例においては甲種防火戸として不適
格である。When heating was performed in the same manner as in the example,
At −840 ° C. for 30 minutes, the upper side of the glass plate slipped off the frame material, and a flame was ejected from the portion to the outside of the heating furnace, and the test was stopped. In this comparative example, it is ineligible as Class A fire door.

【００２５】[0025]

【発明の効果】本発明によれば、容易な手段により火災
時においても防火ガラス板を充分保持できるものであ
り、特に熱軟化したガラス板を枠材から離脱することな
く支持するうえで好適である。According to the present invention, the fire prevention glass plate can be sufficiently held even in the event of a fire by a simple means, and is particularly suitable for supporting the thermally softened glass plate without detaching from the frame material. is there.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の防火ガラス板の支持構造における枠材
と防火ガラス板の係わりを示す側断面図である。FIG. 1 is a side sectional view showing the relationship between a frame material and a fireproof glass plate in a support structure for a fireproof glass plate of the present invention.

【図２】台形状金具Ａ、Ｂを示す斜視図である。FIG. 2 is a perspective view showing trapezoidal fittings A and B.

【図３】防火ガラス板と台形状金具Ａ、Ｂの位置関係を
示す正面図である。FIG. 3 is a front view showing a positional relationship between a fire prevention glass plate and trapezoidal fittings A and B.

【符号の説明】[Explanation of symbols]

１ 枠材 １−a 枠材本体 １−b 押縁 １−c、１−d 縦辺 ２ 防火ガラス板 ３ 台形状の金具Ｂ ３−a 突条（突起） ４ 台形状の金具Ａ ５ 耐熱性封止材 ６ 耐熱性充填材 ６ 貫通孔（スリット） ７ ガラス板取付け凹所 DESCRIPTION OF SYMBOLS 1 Frame material 1-a Frame material main body 1-b Pressing edge 1-c, 1-d Vertical side 2 Fireproof glass plate 3 Trapezoidal fitting B 3-a Ridge (projection) 4 Trapezoidal fitting A 5 Heat resistant seal Stopper 6 Heat-resistant filler 6 Through hole (slit) 7 Glass plate mounting recess

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 防火扉または防火窓における耐熱性枠材
に防火ガラス板を支持する構造において、前記枠材のガ
ラス板取付け凹所における縦辺とガラス板との間には、
前記縦辺に固設し、下方に向け厚みを増大し、垂直なガ
ラス板面に対し傾斜面を有する断面が台形状の金具Ａ
と、ガラス板面に接し、下方に向け厚みを減少し、前記
断面が台形状の金具Ａの傾斜面に摺接する傾斜面を有す
る断面が台形状の金具Ｂを介設したことを特徴とする防
火ガラス板の支持構造。1. A structure for supporting a fire-resistant glass plate on a heat-resistant frame material of a fire door or a fire window, wherein a gap between a vertical side of the glass plate mounting recess of the frame material and the glass plate is:
Metal fitting A fixed on the vertical side, increasing in thickness downward, and having a trapezoidal cross section having an inclined surface with respect to the vertical glass plate surface.
And a cross section having an inclined surface which is in contact with the glass plate surface and decreases in a downward direction, and which has an inclined surface which slides on the inclined surface of the trapezoidal metal fitting A is provided with a trapezoidal metal fitting B interposed therebetween. Support structure for fireproof glass plate. 【請求項２】 断面が台形状の金具Ｂにおけるガラス板
面との接触域に、突起を付設したことを特徴とする請求
項１記載の防火ガラス板の支持構造。2. The support structure for a fireproof glass plate according to claim 1, wherein a projection is provided in a contact area of the bracket B having a trapezoidal cross section with the glass plate surface. 【請求項３】 枠材におけるガラス板取付け凹所を封止
するための耐熱性封止材および／または耐熱性充填材を
配設したことを特徴とする請求項１または２記載の防火
ガラス板の支持構造。3. The fire-resistant glass plate according to claim 1, wherein a heat-resistant sealing material and / or a heat-resistant filler for sealing the glass plate mounting recess in the frame material are provided. Support structure.