JP2001123758A - Support structure of fireproof glass plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently hold a fireproof glass plate by an easy means in a fire and support it without detaching the particularly thermally softened glass plate from a frame material. SOLUTION: In the support structure of a fireproof glass plate, a structure for supporting the fireproof glass plate on the heat resistant frame material in a fireproof door and a fireproof window is sandwiched by contacting sandwiching pins projected from both the vertical sides of a glass plate recess part on the frame material on the front and rear faces of the glass plate peripheral edge, and one or both the sandwiching pins can be advance and retreated toward the glass plate face in response to thermal softening and expansion of the glass plate.

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、容易な手段で火災時においても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 support structure for a fireproof glass plate which can solve the above-mentioned disadvantages of the prior art and can hold the fireproof glass plate sufficiently even in a fire by simple 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、前記ガラス板周縁部の前後面に枠材におけるガ
ラス板取付け凹所の両縦辺から突出した挟持ピンを当接
することにより挟持し、前記一方または双方の挟持ピン
がガラス板の熱軟化に応じてガラス板面方向に向けて進
出、および熱膨脹に応じて後退を可能とした防火ガラス
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. The pinching pin protrudes from both vertical sides of the glass sheet to make contact with the pinching pin, and the one or both pinching pins can advance in the direction of the glass sheet surface according to the heat softening of the glass sheet, and can retreat according to the thermal expansion. This is a support structure for the fireproof glass plate.

【００１１】前記ガラス板面方向に向け進出、および後
退可能な挟持ピンは、ガラス板取付け凹所の縦辺を貫通
し、前記挟持ピン後端において、前記縦辺の外側部に配
置した加熱膨張性材料により押圧支持されるものであ
る。The pin, which can be advanced and retracted in the direction of the surface of the glass plate, penetrates the vertical side of the glass plate mounting recess, and is arranged at the rear end of the pin at the outside of the vertical side. It is pressed and supported by the conductive material.

【００１２】また、枠材におけるガラス板取付け凹所を
封着する耐熱性充填材および／または耐熱性シール材を
配設するのが好ましい。It is preferable to provide a heat-resistant filler and / or a heat-resistant seal 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
(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
これを強化したもの）、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,
Heating temperature of Class A fire door with softening point notified by Ministry of Construction
(925 ° C.), which can be suitably used for a glass plate, but of course, a borosilicate glass having a high softening point (or a reinforced glass thereof), quartz glass, crystallized glass, and a multi-layer of these glasses It is a multi-layer type glass in which an aqueous gel is interposed between glass and 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（粘
着）、シールすればよい。勿論前記各辺においても本発
明の挟持ピンをガラス板に当接することにより挟持する
手段を構ずることができる。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 for supporting the upper side of the fire-resistant glass plate. For example, at the lower side and both vertical sides of the fire-resistant glass plate, the glass plate mounting recess of the frame material and each of the above sides are used. It is sufficient to bond (stick) and seal with a flame-retardant material such as silicone in between. Needless to say, a means for holding the holding pin of the present invention in each side by abutting the holding pin on the glass plate can also be provided.

【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９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。前記一方の縦辺１−cには挟持ピン３をビス等の鋲
着手段により固設し、他方の縦辺１−dには、貫通孔５
を穿ち挟持ピン４が進退可能に挿通され、これら両挟持
ピン３、４により防火ガラス板が挟持される。挟持ピン
４の後端には支持板片10、例えば鋼片を付設し、前記支
持板片10と枠材における別の縦辺１−eとの間には、そ
れらに接して加熱膨脹性材料６を配置し、通常使用時に
おいては加熱膨脹性材料６が支持板片10を介して挟持ピ
ン４を押圧する如くして支持、固定する。火災等による
加熱の初期段階では防火ガラス板２が膨脹し、加熱膨脹
性材料６が軟化を始め、挟持ピン４が後退するが、後述
の耐熱性充填材８および／または耐熱性シール材７の支
持作用もあって防火ガラス板２は充分枠材に固定され
る。また、加熱の後期段階では防火ガラス板２が軟化
し、従来であれば防火ガラス板が枠材から外れ落ちるよ
うな場合であっても、加熱膨張性材料６の膨脹圧により
挟持ピン４がガラス板面に貫入し、同様に挟持ピン３も
ガラス板面に貫入して防火ガラス板２の落下を防ぐ。な
お、図において挟持ピン３は縦辺１−cに固定されたも
のであるが、前記挟持ピン３も挟持ピン４同様に加熱膨
張性材料との組合せで進退可能とすることができる。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. For example, a high-strength soda-lime-based glass is provided between both longitudinal sides 1-c and 1-d of the glass plate mounting recess 9 formed by these. The edge (upper side in the figure) of the fire protection glass plate 2 made of is inserted and attached. The holding pin 3 is fixedly attached to the one vertical side 1-c by means of a rivet such as a screw, and the other vertical side 1-d is provided with a through-hole 5.
And the pin 4 is inserted so as to be able to advance and retreat, and the fireproof glass plate is pinched by the pin 3 and 4. At the rear end of the holding pin 4, a support plate 10, for example, a steel piece is attached, and between the support plate 10 and another vertical side 1-e of the frame material, a heat-expandable material is in contact with them. 6, which are supported and fixed such that the heat-expandable material 6 presses the holding pin 4 via the support plate piece 10 during normal use. In the initial stage of heating due to a fire or the like, the fireproof glass plate 2 expands, the heat-expandable material 6 starts to soften, and the pin 4 recedes, but the heat-resistant filling material 8 and / or the heat-resistant sealing material 7 described below are used. The fire prevention glass plate 2 is also sufficiently fixed to the frame member due to the supporting action. Further, in the later stage of heating, even if the fire prevention glass plate 2 softens and the fire prevention glass plate falls off from the frame material in the related art, the pin 4 is pressed by the expansion pressure of the heat-expandable material 6. Similarly, the pin 3 penetrates the glass surface to prevent the fire-resistant glass plate 2 from falling. Although the holding pin 3 is fixed to the vertical side 1-c in the figure, the holding pin 3 can be made to be able to advance and retreat in combination with a heat-expandable material like the holding pin 4.

【００１６】ガラス板取付け凹所９と防火ガラス板２の
周縁部との間には、耐熱性充填材８および耐熱性シール
材７で封着し、通常使用時においては水分、塵等の前記
凹所９への侵入を防ぎ、防火ガラス板の支持、固定を強
固とする作用を有し、また、火炎に接したときには火や
煙を生ずることはない。A space between the glass plate mounting recess 9 and the peripheral edge of the fireproof glass plate 2 is sealed with a heat-resistant filler 8 and a heat-resistant sealing material 7. It has the effect of preventing intrusion into the recess 9 and strengthening the support and fixing of the fireproof glass plate, and does not generate fire or smoke when coming into contact with a flame.

【００１７】前記挟持ピン３、４は甲種防火戸における
加熱温度 (925℃）においても耐え得る耐熱性金属（例
えば鋼）またはセラミックよりなる。図２は各種挟持ピ
ンの斜視図（他の部材は省いてある）であり、図２Ａの
如くの丸棒状の挟持ピン３、４に限らず、図２Ｂの角柱
状の挟持ピン３、４、あるいは図２Ｃの短冊状の挟持ピ
ン３、４であってもよい。挟持ピンの先端は鋭突である
必要はなく、先端部断面が丸形状であったり、図２Ｂの
ように断面台形状に窄めたものであってもよく、また図
２Ｃのように短冊状の挟持ピンの先端を幅方向にジグザ
グ凹凸を配したものであってもよい。The holding pins 3 and 4 are made of a heat-resistant metal (for example, steel) or ceramic which can withstand the heating temperature (925 ° C.) in the class A fire door. FIG. 2 is a perspective view of various holding pins (other members are omitted). The holding pins are not limited to the round bar-shaped holding pins 3 and 4 as shown in FIG. Alternatively, they may be strip-shaped pinching pins 3 and 4 in FIG. 2C. The tip of the pin does not need to be sharp, but may have a round cross-section at the tip or a narrowed trapezoidal cross-section as shown in FIG. 2B, or a strip as shown in FIG. 2C. May be provided with zigzag irregularities in the width direction at the tip of the pin.

【００１８】加熱膨脹性材料６は、珪酸ソーダゲル成形
体をはじめとする有機、無機質水性ゲル成形体、ひる石
等の膨張石粒、膨脹黒鉛、その他発泡成分入り難燃性樹
脂材等の加熱膨脹性材料が使用できる。The heat-expandable material 6 is a heat-expandable material such as an organic or inorganic water-based gel formed body such as a sodium silicate gel formed body, expanded stone grains such as vermiculite, expanded graphite, and other flame-retardant resin materials containing a foaming component. Materials can be used.

【００１９】前記耐熱性充填材８は一例として無機繊維
製シート、マット片等からなり、これを例えばシリコー
ン接着剤によりガラス板取付け凹所９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。耐熱性シール材７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
凹所９への侵入を防止するものであり、耐熱性充填材
８、耐熱性シール材７を併存させるのが好ましい。The heat-resistant filler 8 is made of, for example, an inorganic fiber sheet, a mat piece, or the like.
It is bonded and fixed to c (and 1-d) and the fireproof glass plate 2. The heat-resistant sealing material 7 is made of a sealing material such as silicone, and adheres and seals in the same manner as described above. They themselves strongly support and fix the fireproof glass plate and prevent the penetration of moisture, dust and the like into the recess 9, and it is preferable to use the heat-resistant filler 8 and the heat-resistant seal 7 together.

【００２０】図３は防火ガラス板と挟持ピンの位置関係
を示す正面図（他の部材は省いてある）であり、挟持ピ
ン３（４）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。支持箇所数やその
間隔は防火ガラス板のサイズや熱軟化性を勘案して適宜
設計する。破線ａで囲った部分は防火ガラス板２の枠材
への挿入領域を示し、破線ａ−一点鎖線ｂの間の領域11
は耐熱性充填材８および耐熱性シール材７による封着領
域を示す。なお、防火ガラス板２の下辺は下枠材上に複
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るが、セッティングブ
ロックの図示は省略する。また、先述の如く防火ガラス
板の縦辺、下辺においても挟持ピンを当接させ、ガラス
板を挟持することができることはいうまでもない。FIG. 3 is a front view showing the positional relationship between the fire prevention glass plate and the holding pin (other members are omitted). The holding pin 3 (4) is provided at a plurality of locations on the upper side of the fire prevention glass plate 2. Supports at three locations. The number of supporting portions and the interval between them are appropriately designed in consideration of the size and thermal softening property of the fireproof glass plate. A portion surrounded by a broken line a indicates an insertion region of the fire prevention glass plate 2 into the frame material, and a region 11 between the broken line a and the one-dot chain line b.
Indicates a sealing region with the heat-resistant filler 8 and the heat-resistant sealing material 7. 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 places on the lower frame material, but the setting block is not shown. Further, as described above, it is needless to say that the holding pin can be brought into contact with the vertical side and the lower side of the fireproof glass plate to hold the glass plate.

【００２１】[0021]

【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９に取付け、ガラス板上辺
３箇所を鋼製挟持ピン３、４で挟持し、一方のピン４は
珪酸ソーダゲル成形体６で押圧するようにしてセット
し、またガラス板全周と枠材のガラス板取付け凹所９の
間はガラス繊維製充填材８、およびシリコーン製シール
材７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 in the glass plate mounting recess 9 of the steel frame 1 shown in the above embodiment, and three upper sides of the glass plate are clamped by steel clamping pins 3 and 4, and one pin 4 is formed by a sodium silicate gel molded body 6. It was set so as to be pressed, and the space between the entire periphery of the glass plate and the glass plate mounting recess 9 of the frame material was sealed with a glass fiber filler 8 and a silicone sealing material 7.

【００２２】上記枠支持された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 supported on the frame 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 heating, the glass plate breaks, breaks, and the flame does not penetrate,
Further, generation of fire smoke from the sealing portion was not recognized. 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.

【００２３】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.

【００２４】比較例 ： 実施例同様の防火ガラス板、枠
材を用い、ガラス板を挟持ピンで挟持することなく、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 clamped by clamping pins, and then subjected to a fireproof test.

【００２５】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
ちて、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, after the start of heating,
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.

【００２６】[0026]

【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】図２Ａ〜Ｃは各種挟持ピンの斜視図である。2A to 2C are perspective views of various holding pins.

【図３】防火ガラス板と挟持ピン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 a holding pin.

【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、４ 挟持ピン ５ 貫通孔 ６ 加熱膨張性材料 ７ 耐熱性シール材 ８ 耐熱性充填材 ９ ガラス板取付け凹所 10 支持板片 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, 4 Nipping pin 5 Through hole 6 Heat-expandable material 7 Heat-resistant seal material 8 Heat-resistant filler 9 Glass plate mounting recess 10 Support plate piece

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 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、前記ガラス板周縁
部の前後面に枠材におけるガラス板取付け凹所の両縦辺
から突出した挟持ピンを当接することにより挟持し、前
記一方または双方の挟持ピンがガラス板の熱軟化に応じ
てガラス板面方向に向けて進出、および熱膨脹に応じて
後退を可能としたことを特徴とする防火ガラス板の支持
構造。1. A structure in which a fire-resistant glass plate is supported on a heat-resistant frame material of a fire door and a fire window, wherein the front and rear surfaces of a peripheral edge of the glass plate are sandwiched from both longitudinal sides of a glass plate mounting recess in the frame material. A pin that abuts the pin to abut the pin, and the one or both of the pin pins advance toward the surface of the glass sheet in accordance with the thermal softening of the glass sheet, and can retreat in response to the thermal expansion. Glass plate support structure. 【請求項２】 ガラス板面方向に向け進出、および後退
可能な挟持ピンは、ガラス板取付け凹所の縦辺を貫通
し、前記挟持ピン後端において、前記縦辺の外側部に配
置した加熱膨張性材料により押圧支持されたことを特徴
とする請求項１記載の防火ガラス板の支持構造。2. A holding pin that can be advanced and retracted in the direction of the glass plate surface penetrates a vertical side of the glass plate mounting recess, and is disposed at an outer side of the vertical side at a rear end of the holding pin. The support structure for a fireproof glass plate according to claim 1, wherein the support structure is pressed and supported by an expandable material. 【請求項３】 枠材におけるガラス板取付け凹所を封着
する耐熱性充填材および／または耐熱性シール材を配設
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。3. The support structure for a fireproof glass plate according to claim 1, wherein a heat-resistant filler and / or a heat-resistant sealant for sealing the glass plate mounting recess in the frame member are provided.