JP5651008B2 - Fire prevention structure of multi-layer glass window - Google Patents

Description

  The present invention prevents the escape of a flame generated around a double-glazed glass by heating from the outside or the indoor side of a double-glazed window provided in an opening of a building in the event of a fire in a building such as a house or office It is related with the fire prevention structure of the multilayer glass window which was made to do.

  Buildings are being made non-combustible from the viewpoint of disaster prevention. In particular, in order to avoid burning from the glass window in the event of a fire, prevent burning from firing from the outside of the glass window or ignition by radiant heat, etc. Has become an important issue.

When fire prevention measures are taken on glass windows, fire prevention performance against flames is stipulated by the Building Standards Act and the construction ordinance.
For example, in a three-story wooden house, when a glass window fire test is performed, a gas burner or the like is used to keep a predetermined distance away from the radiated flame directly touching the window glass surface, and the heating temperature is ISO. Heating is started when heating from the inside or outside of the room so that the standard heating temperature curve specified in the above (the heating temperature after 20 minutes reaches 781 ° C according to the standard heating temperature curve) After that, the condition that it does not spread to the non-heated side for 20 minutes, specifically,
(1) No flame eruption that continues for more than 10 seconds to the non-heating side
(2) No flame that continues for more than 10 seconds on the non-heated surface
(3) It is necessary to satisfy the three conditions at the same time that no damage such as cracks through which the flame passes and no gap occur.

  2. Description of the Related Art Conventionally, in a glass window of a building, for example, two sheets of glass, float glass and netted glass, are used as a window frame (sash frame) through a sealed space formed by an aluminum spacer member. Butyl rubber as a first sealant between the inner surface between the inner and outer glasses and the spacer member, and a second silicone rubber between the inner periphery of the window frame and the outer periphery of the multi-layer glass Some have a configuration in which waterproofing is enhanced by sealing with a sealing material interposed therebetween.

However, in this case, since the sealing material is made of a hydrocarbon-based resin that ignites at about 400 ° C., flammable gas generated from the sealing material due to high heat at the time of fire is easily accumulated in the sealed space between the plate glasses and easily ignites. The sealing material is further heated by the flame and ignites, and a phenomenon in which the plate glass is locally heated and cracked by the ignition is necessary to prevent this.
Therefore, by providing a flame-retardant or non-flammable inner surface sealing material inside the first sealing material, fire prevention performance is improved (see Patent Document 1).

  Although the double glazing described in Patent Document 1 has improved fire prevention performance, it cannot completely prevent the sealing material from igniting, and even if a fire prevention structure is constructed using the double glazing, the building standards It was difficult to maintain the fire protection performance stipulated by the law and the construction ordinance.

  That is, for example, when a glass with a mesh is arranged on the outdoor side, and a float glass with a thickness of about 3 mm is arranged on the indoor side, heated from the outdoor side, and subjected to a fire test based on the above Building Standards Law, etc. In about a minute, the temperature rise due to the radiant heat of the heating furnace causes cracks in the indoor float glass. After that, the seal material spontaneously ignites and continues to burn, and the window frame is also made of, for example, vinyl chloride resin. In the case of being molded with resin, the fire sometimes burned out to the indoor resin on the non-heated surface side.

  In addition, in order to prevent breakage of the float glass, when the glass on the indoor side is made of glass that does not cause cracking, such as heat-resistant tempered glass, the heat-resistant tempered glass remains unbroken, so the non-heated surface side of the meshed glass Since the radiation of heat from the hindrance is hindered, the temperature of the meshed glass rises and softens, and the meshed glass may collapse in less than 20 minutes after the start of heating.

  Furthermore, as a fire prevention structure of the glass window, the gap between the fitting part of the window frame and the peripheral edge of the fire prevention glass plate is filled with a ceramic fiber and a thermally expandable filler together with a fire prevention sealant, and heating in the event of a fire occurs. By expanding and expanding the thermally expandable filler, the fireproof glass plate is held between the window frame and the fireproof glass plate so that the fireproof glass plate is not deformed by the expansion pressure. There exists what was made to prevent peeling (refer patent document 2).

However, the fireproof structure shown in Patent Document 2 is a structure of a single glass plate made of a fireproof glass plate, and the above problem cannot be solved even if the structure is applied to a multilayer glass.
In addition, in order to prevent the fire-resistant glass plate from wobbling, it is necessary to pack the filler tightly in the gaps on both sides of the plate glass, but in multi-layer glass, an aluminum spacer member is sandwiched between the plate glasses, As the temperature rises after the start of heating, the spacer member is deformed or dropped, and the effect of preventing wobbling cannot be maintained for a long time.

  On the other hand, when the fire glass plate is attached to the window frame, the gap between the window frame mounting groove and the outer peripheral edge of the fire glass plate is filled with a filler such as caulking material or backup material, and then the filler. Fireproof sealant is filled on top of this, so that caulking materials and backup materials are expanded (foamed) and solidified by heating in the event of a fire, preventing the fireproof glass plate from falling off, and flames from inside and outside the room In order to cut off the distribution of the material, it is necessary to seal the opening of the gap with the filler, and it takes time to fill the filler in the field, which is not only inferior in workability but also in material cost. There was also a problem of soaring.

JP 7-237941 A JP 7-229372 A

  In view of the above-mentioned present situation, the present invention provides a window frame or window sill so that the fire prevention performance prescribed in the Building Standards Act and the construction ordinance can be maintained even by heating from the outside or inside of the building. Multi-layer glass windows that can prevent the loss of flame that occurs around the multi-layer glass and prevent the collapse of glass with a mesh as much as possible, have excellent workability, and can reduce material costs It aims to provide a fire prevention structure.

The above-described problems are solved by the invention having the following configuration, as described in each claim in the section “Claims”.
(1) In a fireproof structure of a multi-layer glass window in which a multi-layer glass is mounted on a synthetic resin window frame or window sash,
With depositing a metal cover at least right and left sides portions outer peripheral edge of the said double-glazing, the outer peripheral edge of the insulating glass is fitted in the inside inner groove in the window frame or Madokamachi, indoor side and the chamber The glass cover is held in a state of being sandwiched by both the indoor side and outdoor side glass detachment stoppers in the heat-resistant glass detachment prevention composed of each glass detachment prevention on the outside, so that the multi-layer glass is attached to the window frame or the window fence. Wear.

(2) In the above item (1), as the metal cover, a stainless steel cover is applied to at least three sides of the upper edge and the left and right edges of the outer peripheral edge of the multi-layer glass, and the heat resistant glass is made of a metal cover. A glass detachment stopper is provided at least partially in the longitudinal direction of the inner peripheral groove in the window frame or window ridge.

(3) In the above item (2), the stainless steel cover is formed with a channel member having a U-shaped cross section, and a plurality of the cover in the longitudinal direction of the channel member is formed on the surface of the channel member facing the outer peripheral end surface of the multilayer glass. Partially provide water holes.

(4) In any one of the above items (1) to (3), a non-burnable spacer member that is non-burned after heating is interposed between the outer peripheral ends of a pair of plate glasses constituting the multilayer glass.

(5) In the above item (4), the non-burnable spacer member is formed by disposing a silicone-based sealing material on the outside of the metal or resin spacer member.

(6) In any one of the above items (1) to (5), the expandable graphite is mainly used between the metal cover and the inner peripheral groove portion of the window frame or the window frame in which the outer peripheral edge of the multilayer glass is fitted. A flame shielding material as a component is interposed.

(7) In the above item (6), the flame shield material is provided directly or indirectly on the inner peripheral groove surface of the window frame or window in the portion where the heat-resistant glass slip-off prevention is not provided. In the portion where the protective glass slip stopper is provided, it is provided between the indoor side glass slip stopper and the metal cover in the heat resistant glass slip stopper.

(8) In any of the above (1) to (7) section on the inner peripheral groove of the window frame or Madokamachi, Keru set a metal angle member.

(9) In any one of the above items (1) to (8), a metal reinforcing material having a U-shaped, L-shaped, rectangular or pipe-shaped cross section is provided in the internal space of the window frame or window ridge. At the same time, a flame shielding material mainly composed of expandable graphite is interposed between the outer surface of the metal reinforcing material and the internal space.

According to the present invention, the following effects can be achieved.
According to the first aspect of the present invention, in the fire prevention structure of a multi-layer glass window in which a multi-layer glass is mounted on a synthetic resin window frame or window sill, metal is provided at the outer peripheral ends of at least the left and right sides of the multi-layer glass. Since the outer peripheral edge of the double-glazed glass is attached to the inner peripheral groove of the window frame or window ridge, a heat-resistant glass slip-off stopper is provided. In the case of a structure in which a float glass and a glass with a mesh are located on the indoor side, the float glass collapses in about 2 to 3 minutes when the multi-layer glass window is heated from the outside in a fire. Even so, the metal cover can hold both the left and right sides of the glass inside the room to prevent misalignment of the glass inside, and at least 20 minutes or more in cooperation with the glass stopper. Netting It is possible to prevent the collapse of the glass.
On the other hand, when the multi-layer glass window is heated from the side of the meshed glass on the indoor side, similarly, the left and right sides of the meshed glass are held by the metal cover to prevent misalignment of the meshed glass. By collaborating with the glass detachment stopper, the netted glass can be prevented from collapsing for at least 20 minutes.
Thereby, at the time of a fire, the fireproof performance prescribed | regulated by the Building Standard Act, the construction order, etc. can be maintained also by the heating from the outdoor side or indoor side of a building.
In addition, a coating material as shown in Japanese Patent Application No. 2009-149797 filed earlier by the applicant of the present application is used to prevent the loss of flame generated around the window frame or window sill and the multilayer glass, and the occurrence of the collapse of the glass with a mesh. This can be prevented as much as possible without using a backup material.
Furthermore, since the coating material and the backup material are not required, the on-site workability is excellent and the material cost can be reduced.

  According to the invention described in claim 2, in general, a metal cover is attached to the three sides of the upper side and the left and right sides of the outer peripheral edge of the double-glazed glass where gaps are likely to occur due to the weight of the double-glazed glass during a fire. Therefore, the occurrence of the gap can be prevented and a stainless steel cover is used as the metal cover, so that corrosion is prevented and durability is good.

According to the invention described in claim 3, since the stainless steel cover is formed with a channel member having a U-shaped cross section, in the event of a fire, the flame is directed indoors and outdoors through a slight gap near the outer peripheral edge of the multilayer glass. When attempting to leak, the stainless steel cover having a U-shaped cross section has the effect of preventing the leak.
Moreover, since a plurality of water passage holes are partially provided on the surface of the channel member facing the outer peripheral end surface of the multilayer glass, rainwater around the glass between the outer peripheral end surface of the multilayer glass and the metal cover, etc. Stagnation can be prevented, whereby corrosion of a sealing material or the like disposed around the glass can be prevented.

According to inventions of claims 4 and 5, a non-burnable spacer member, for example, a metal spacer member made of aluminum, stainless steel, steel, or the like, between the outer peripheral ends of a pair of plate glasses constituting the multilayer glass, Or, a non-burning spacer member formed by placing a silicone sealant on the outside of a resin spacer member such as vinyl chloride resin or acrylonitrile resin with glass fiber is used. When the glass is heated from the outdoor side or the indoor side, the float glass collapses in about 2 to 3 minutes, and a metal spacer member such as an inner aluminum member in the non-burning spacer member, or a vinyl chloride resin, Even if a resin spacer member such as acrylonitrile resin containing glass fiber collapses within 20 minutes, the non-burning spacer member disposed outside is In other words, it is still non-burned after heating and can retain the glass inside the room by the function of the silicone-based sealing material that can retain a certain shape and the metal cover, so at least 20 minutes Over the above, collapse of the meshed glass can be prevented.
The glass on the non-heated surface side is preferably tempered glass, heat-resistant tempered glass, meshed glass, or the like so as not to expose the flame when a silicone-based sealing material or the like is burned to the non-heated surface.

  According to invention of Claim 6, between the metal cover and the inner peripheral groove part of the window frame or window ridge in which the outer peripheral end of a multilayer glass is fitted, the flame-shielding material which has a foaming graphite as a main component is provided. Since they are interposed, the flame shield material is burned by heating, foams, and expands and expands, whereby it is possible to shield the flame between the inner peripheral groove portion of the window frame and the outer peripheral end surface of the multilayer glass.

According to the seventh aspect of the present invention, the flame shield material is provided directly or indirectly on the inner peripheral groove surface of the window frame or window ridge in the portion where the heat resistant glass detachment stopper is not provided. In the part where the heat-resistant glass stopper is provided, it is provided between the indoor glass stopper and the metal cover in the heat-resistant glass stopper. In addition, the periphery of the outer peripheral edge of the multi-layer glass in the inner peripheral groove can be filled with foamed (expanded) graphite to block the flow of oxygen between the inside and outside of the room, and to improve the fire prevention performance of the window frame or window jar. it can.

According to the invention of claim 8 wherein, the inner peripheral groove of the window frame or Madokamachi, since are only set a metal angle member, a fire, can be thus shielding flame metallic steel angle bar.

According to the ninth aspect of the present invention, a metal reinforcing material having a U-shaped, L-shaped, rectangular or pipe-shaped cross section is provided in the internal space of the window frame or window ridge, and the metal reinforcing material is provided. In the event of a fire, the outer surface of the metal reinforcing material in the inner space of the window frame or window ridge is interposed between the outer surface of the inner space and the inner space. The gap between the two can be filled with foamed graphite, the flow of oxygen between the inside and outside of the room can be blocked, and the fireproof performance of the window frame or the window can be improved.
The specific contents of the invention are as follows.

It is a perspective view which partially fractures and shows one Embodiment of the fire prevention structure of the multilayer glass window of this invention. It is an expanded longitudinal cross-sectional view of the site | part in which the glass slip-off prevention in the II-II line | wire of FIG. 1 is not arrange | positioned. FIG. 4 is an enlarged perspective view showing a partially exploded state of a metal cover attached to a multilayer glass. FIG. 2 is an enlarged vertical cross-sectional view of a portion where a glass detachment stopper is arranged along the line IV-IV in FIG. 1. It is a principal part expanded longitudinal cross-sectional view which shows the assembly | attachment state of the double glazing to the window frame by glass slip prevention. It is a disassembled perspective view of glass slip-off prevention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a partially cutaway perspective view showing an embodiment of a fire prevention structure for a multi-layer glass window according to the present invention, and FIG. 2 is a diagram showing a portion of the II-II line of FIG. FIG. 3 is an enlarged vertical cross-sectional view, and FIG. 3 is an enlarged perspective view showing a partially exploded state of the metal cover attached to the multilayer glass.
In the present embodiment, as a multi-layer glass window, a case where a multi-layer glass is mounted on a window frame of a fitting window will be described as an example. The same applies.

As shown in FIG. 1, the double-glazed window of the present invention includes a synthetic resin window frame 2 assembled in an opening of a building housing 1, and a double-glazed glass 3 attached to the window frame 2. It is made up of.
The window frame 2 is composed of a frame main body 2A having a hollow structure attached to the housing 1 of the building, and a pressing edge 2B attached to the frame main body 2A.
For example, as disclosed in JP-A-9-137675, the window frame 2 is a frame member formed from a vinyl chloride resin and a resin composition in which a cellulose-based fine powder prepared from pulverized wood is blended. It is formed by framing in a rectangular shape when viewed from the front.

  As shown in FIG. 2, the frame main body 2 </ b> A is provided with a metal reinforcing material 5 made of a hollow channel member having a substantially rectangular cross section such as iron in the internal space 4. The inner space 4 is reinforced by positioning and fixing.

On the outer periphery of the indoor side A of the frame main body 2A, an attachment piece 7 fixed to the building housing 1 with screws 6 or the like is formed, and on the inner periphery thereof, the indoor side of the multilayer glass 3 is formed. A glass support portion 8 for supporting the outer peripheral end 3a of A is formed, and a fitting groove 9 is also formed on the inner periphery of the outdoor side B thereof.
A pressing edge 2B is detachably attached to the fitting groove 9, and the outer peripheral edge of the multilayer glass 3 is formed on the inner periphery of the window frame 2 by the pressing edge 2B and the glass support portion 8 of the frame body 2A. Is formed with an inner circumferential groove portion 10 to be mounted in a fitted state.

The multi-layer glass 3 is composed of, for example, a netted glass 11 located on the indoor side A and a float glass 12 located on the outdoor side B, and a non-burning spacer member 13 is interposed between the outer peripheral ends of these plate glasses. Thus, the sealed space 14 is formed so as to be formed.
The non-burning spacer member 13 does not burn away completely even when burned in a fire, and a considerable amount of inorganic components such as oxides remain and can retain a certain shape. For example, the non-burning spacer member 13 is made of aluminum or stainless steel. A spacer member 13A made of a metal spacer member made of steel or the like, or a spacer member made of a resin such as vinyl chloride resin or acrylonitrile resin containing glass fiber, and a silicon-based or inorganic substance disposed outside the spacer member 13A. A material formed of a non-extinguishing rubber such as filled rubber or a sealing material 13B made of an elastomer is appropriately used.
Here, the “outside” of the spacer member 13 </ b> A does not only mean that the spacer member 13 </ b> A is outside in the circumferential direction, but also a concept including the outside with respect to the side surface of the spacer member 13 </ b> A. For example, when the spacer member 13A is made of an aluminum square pipe filled with a desiccant inside, the sealing material 13B includes a space on the outer side in the circumferential direction of the square pipe and the square pipe and each glass located on both sides thereof. It may be arranged in a U-shaped cross section so as to fill the space between them at the same time. In short, the sealing material 13B may be arranged outside any spacer member 13A. Further, the sealing material 13B may be made of butyl rubber or polysulfide having a high sealing property as long as the non-burning property is not impaired.
In the case of quasi-flame shielding performance (flame shielding only on the indoor side A), for example, the indoor side (non-heated side) A is made of meshed glass, and the outdoor glass outside the indoor and outdoor plate glasses 11 and 12 constituting the multilayer glass 3 Examples of B include float glass, Low-E glass, tempered glass, heat-resistant glass, and laminated glass. In addition, in the case of flame shielding performance (both indoor and outdoor flame shielding), for example, the indoor side A may be heat resistant glass or tempered glass, and the outdoor side B may be meshed glass, and both may be meshed glass or heat resistant glass. Etc. are used as appropriate.

  The outer peripheral ends 3a and 3b of the indoor and outer sides A and B in the multilayer glass 3 are watertightly sandwiched between the inner peripheral groove portions 10 of the window frame 2 via packings 15 and 16, respectively. The packing 16 provided at the tip urges the outer peripheral end of the outdoor side B of the multilayer glass 3, that is, the outer peripheral end 3 b of the outdoor side B of the float glass 12 so as to be elastically pushed toward the indoor side A. .

In the inner peripheral groove portion 10 of the window frame 2, a metal angle member 17 is continuously provided along the left and right longitudinal direction of the glass support portion 8 as necessary.
The metal angle member 17 is made of, for example, stainless steel, and is fixed with screws or the like along the left and right longitudinal directions of the support surface 10a in which the outer peripheral end surface 3c of the multilayer glass 3 in the inner peripheral groove portion 10 is vertically opposed. The mounting piece 17a and the mounting piece 17a are bent and locked at a right angle downward so as to face the outer surface facing the outdoor side B of the glass support 8 from one end on the indoor side A in the front-rear direction. It is formed in an L-shaped cross section with the piece 17b, and the inner surface of the locking piece 17b facing the indoor side A is brought into contact with the outer surface of the glass support portion 8 and assembled.

On the surface facing the left-right direction of the mounting piece 17a of the metal angle member 17 on which the support surface 10a of the inner peripheral groove 10 in the window frame 2, that is, the outer peripheral end surface 3c of the multilayer glass 3 is opposed, for example, expandable graphite is used. A tape-shaped flame barrier material 18 as a main component is disposed directly or indirectly in the longitudinal direction along the inner surface of the metal angle member 17.
The flame barrier 18 is burned and foamed by heating in the event of a fire, and the periphery of the outer peripheral edge of the multilayer glass 3 in the inner peripheral groove 10 is filled with foamed (expanded) graphite and foamed. 18 and the metal angle member 17, and the gap formed between the support surface 10 a of the inner peripheral groove 10 in the window frame 2 and the outer peripheral end surface 3 c of the double glazing 3 is closed, thereby Blocks the distribution of fire and improves the fire protection function.

A metal reinforcing material 5 having a U-shaped cross section is provided in the internal space 4 of the frame main body 2A, and the vertical space between the metal reinforcing material 5 and the frame main body 2A in the internal space 4 is provided. Flame shielding materials 19 and 20 mainly composed of expandable graphite are interposed in the gaps in the direction or the lateral direction.
These flame shields 19 and 20, like the flame shield 18 on the support surface 10 a in the inner circumferential groove 10, are burned and foamed by heating during a fire, and the foamed (expanded) graphite causes the above-mentioned By filling and closing the gap between the metal reinforcing material 5 and the frame main body 2A in the internal space 4, the flow of oxygen between the interior and the exterior is blocked, and the fireproof performance as the window frame 2 is improved. .
In addition to the U-shaped cross-sectional shape, for example, an L-shaped, rectangular or pipe-shaped material is appropriately used as the metal reinforcing material 5.

As shown in FIG. 3, a metal cover 21 is attached to the outer peripheral edge of the multilayer glass 3.
The metal cover 21 is preferably made of a stainless steel channel member 22 having a U-shaped cross section, and a plurality of parts in the longitudinal direction are partially formed on a surface 22 a of the channel member 22 facing the outer peripheral end surface 3 c of the multilayer glass 3. A water passage hole 23 is formed.
These water passage holes 23 are seals arranged around the glass due to moisture so as to quickly drain rainwater or the like remaining around the glass between the outer peripheral end surface 3c of the multilayer glass 3 and the metal cover 21. It acts to prevent deterioration of materials.
The metal cover 21 is normally attached to the three sides of the upper side and the left and right sides of the outer peripheral end of the multilayer glass 3.

  FIG. 4 is an enlarged longitudinal sectional view of a portion where a glass slip-off stopper is arranged along the line IV-IV in FIG. 1, and FIG. 5 is an enlarged view of a main part showing a state where the multilayer glass is assembled to the window frame by the glass slip-off stopper. FIG. 6 is an exploded perspective view of the glass stopper.

On the support surface 10a of the inner peripheral groove 10 in the window frame 2, as shown in FIG. 1, a plurality of heat resistant glass detachment stoppers 24 are provided at positions corresponding to the upper, lower, left and right sides of the outer peripheral edge of the multilayer glass 3. It is at least partially installed along the longitudinal direction.
The heat-resistant glass detachment stopper 24 is made of, for example, metal. As shown in FIGS. 4 and 5, the indoor-side glass detachment stopper 24A and the indoor-side glass detachment stopper 24A are detachably assembled. It is comprised from the outdoor side glass slip-off prevention 24B.
The indoor and outdoor glass detachment stoppers 24A and 24B are installed so as to face each other in the indoor / outdoor direction, and the outer peripheral edge of the multilayer glass 3 is positioned between them. The edge can be held directly or indirectly.

As shown in FIG. 6, the indoor and outdoor metallic glass stoppers 24 </ b> A and 24 </ b> B are formed by cutting a metal plate such as a stainless steel plate into a predetermined shape by laser processing, pressing, or the like, and then bending it. Yes.
The indoor side glass slip-off prevention 24A is attached to the supporting surface 10a of the inner peripheral groove portion 10 of the window frame 2 by a screw or the like and attached to the metal angle member 17 in a state of being fastened to each other. The mounting piece 25 is composed of a detachment piece 26 erected at a right angle from the indoor side end of the mounting piece 25, and has an inverted L shape in side view.
The attachment piece portion 25 includes a pair of holding piece portions 28, 28 having an engagement hole 27 opened, and an engagement groove portion 29 formed by cutting and raising at a central portion between the holding piece portions 28. Have.

On the other hand, the outdoor glass stopper 24B includes an insertion piece 30 inserted from the outdoor side B toward each holding piece 28 of the attachment piece 25 in the indoor glass stopper 24A, and the insertion piece 30. And a non-releasable piece 31 bent at a right angle from the outside end of the door.
The insertion piece 30 includes a pair of locking pieces 32, 32 formed in a notch shape, which are locked in the engagement holes 27, and between the locking pieces 32. A locking piece 33 that is formed at the center and is engaged with the engagement groove 29 of the outdoor glass slip-off stopper 24B is provided.
Further, the edge portions on both sides of the plug-in piece portion 30 are formed by bending the locking pieces 34 at right angles toward the indoor side A, and these locking pieces 34 connect the locking piece portions 31 to the outdoor side. When it is going to be bent to B, it engages with the outer peripheral end surface 3c of the multilayer glass 3 and acts to prevent the bending.

In this case, as shown in FIG. 2, the metal cover 21 and the inner peripheral groove portion 10 of the window frame 2 that are attached to the outer peripheral end surface 3c of the multi-layer glass 3 in a portion where the heat-resistant glass removal stopper 24 is not provided. The tape-shaped flame shield 18 provided directly or indirectly between the support surface 10a extends in the longitudinal direction of the inner circumferential groove 10 and is provided with a heat-resistant glass stopper 24. As shown in FIGS. 4 and 5, the portion is interposed between the indoor glass stopper 24 </ b> A and the metal cover 21 in the heat-resistant glass stopper 24.
As a result, the flame shield 18 is burned and foamed by heating during a fire, and the foamed (expanded) graphite fills the gap between the support surface 10a of the inner peripheral groove 10 and the metal cover 21. Thus, the flow of oxygen between the interior and the exterior is blocked, and the fireproof performance as the window frame 2 is improved.

Next, a procedure for mounting the multilayer glass 3 in the inner peripheral groove 10 of the window frame 2 will be described.
First, as shown in FIG. 3, a channel having a thickness of about 0.3 to 2.0 mm made of a U-shaped section such as stainless steel as shown in FIG. Cover with member 22.

  Next, as shown in FIG. 5, the multi-layer glass 3 is fitted from the outdoor side B into the inner peripheral groove portion 10 on the inner peripheral surface of the frame main body 2 </ b> A in a state where the pressing edge 2 </ b> B is not yet attached, and the multi-layer glass is obtained. 3, the outer peripheral end surface 3 c of the inner peripheral groove portion 10 is opposed to the inner surface of the support surface 10 a of the inner peripheral groove portion 10, and the indoor outer peripheral end 3 a of the double glazing 3 is attached to the support surface 10 a of the inner peripheral groove portion 10 with the metal angle member 17. The pair of heat-resistant glass stoppers 24 fixed by fastening together are assembled so as to contact the outer surface of the stopper part 26 of the indoor glass stopper 24A.

  Thereafter, from the outdoor side B of the frame body 2A, the other outdoor side glass release stopper 24B in the heat resistant glass release stopper 24 is placed in the gap between the outer peripheral end surface 3c of the multilayer glass 3 and the inner peripheral surface of the frame main body 2A. The insertion piece 30 of the outdoor side glass slip-off stopper 24B is inserted into the holding piece part 28 in the indoor-side glass slip-off prevention 24A, and the engagement piece part 28 is opened. By inserting and locking the locking piece 32 of the insertion piece 30 into the hole 27, the locking piece portion 26 of the indoor side glass locking stopper 24A and the locking piece portion 31 of the outdoor glass locking stopper 24B are inserted. Thus, the outer peripheral ends 3a and 3b of the indoor and outdoor sides A and B in the multilayer glass 3 are held in a sandwiched state.

  Note that a frame-shaped glass pedestal (not shown) that supports the outer peripheral end surface 3c of the multilayer glass 3 to be in contact with the support surface 10a of the upper and lower inner peripheral groove portions 10 in the frame main body 2A is long. In the event of a fire, this glass cradle is embedded with a flame barrier material 18 foamed around the outer peripheral end surface 3c of the double glazing 3 when it is damaged by high temperature heating in the event of a fire. The defect portion can be closed.

Next, the pressing edge 2B is fitted into the fitting groove 9 formed in the inner periphery of the outdoor side B of the frame body 2A, and the outer peripheral end 3b of the outdoor side B of the multilayer glass 3 is attached with the packing 16 provided at the tip. Cover watertight.
Thereby, the multilayer glass 3 is mounted in the inner peripheral groove portion 10 of the window frame 2 formed by the frame main body 2A and the pressing edge 2B.

In the present embodiment, as described above, the spacer member 13 interposed at the outer peripheral end of the multilayer glass 3 is made of a metal spacer member made of, for example, aluminum, stainless steel, or steel, or contains vinyl chloride resin or glass fiber. A spacer member 13A made of a resin spacer member such as an acrylonitrile resin and a sealant 13B made of a sealant that is non-burned after heating and can retain a certain shape, such as a silicone sealant. Since a dry construction method is adopted that has a double structure inside and outside, ceramic fibers are combined with a fireproof sealant in a gap between the window frame and the peripheral edge of the fireproof glass plate as described in Patent Document 2. Compared to a fire-proof structure using a wet construction method that must be filled with a thermally expandable filler.
Moreover, since the multilayer glass 3 is pressed and fixed by an appropriate force from the pressing edge 2B, the glass does not rattle and can be used stably for a long period of time.

  According to the above configuration, when the multi-layer glass window is heated from the outdoor side B during a fire, the float glass 12 collapses in about 2 to 3 minutes, and the inner metal in the non-burning spacer member 13. Even if the spacer member 13A made of resin or resin falls off within 20 minutes, the outer silicone sealant 13B is not burnt down even after heating, and retains a certain shape. Both the cover 21 and the cover 21 can hold the meshed glass 11 and prevent the meshed glass from collapsing for at least 20 minutes.

  In the case where flame escape is to occur toward the indoor side A through the gap between the bottom surface 10 a of the inner peripheral groove 10 in the window frame 2 and the outer peripheral end surface 3 c of the multilayer glass 3, the metal angle member 17 provides flame shielding. can do.

  On the other hand, even when the double-glazed glass window is heated from the indoor side A, the seal material 13B is still non-burned in the burned state and retains a certain shape. While holding the glass 11, the netted glass 11 can be prevented from collapsing for at least 20 minutes, and the netted glass 11 blocks heat to suppress the heating of the float glass 12 on the outdoor side. Thus, breakage of the float glass 12 can be prevented, and the flame on the indoor side A can be shielded by the metal angle member 17 and the flame shield 18.

  In the above embodiment, the metal angle member 17 is provided continuously along the longitudinal direction of the frame main body 2A constituting the window frame 2, but the metal angle member 17 and the metal glass stopper 24 are provided. May be alternately arranged in the longitudinal direction of the frame main body 2A.

DESCRIPTION OF SYMBOLS 1 Building frame 2 Window frame 2A Frame main body 2B Push edge 3 Multi-layer glass 3a Outer peripheral end 3b Indoor outer peripheral end 3c Outer peripheral end surface 4 Internal space 5 Metal reinforcement 6 Screw 7 Mounting piece 8 Glass support 9 Fitting groove 10 Inner circumferential groove portion 10a Support surface 11 Glass with glass 12 Float glass 13 Non-burning spacer member 13A Spacer member 13B Sealing material 14 Sealed space 15, 16 Packing 17 Metal angle member 17a Mounting piece 17b Locking piece 18, 19, 20 Flameproof material 21 Metal cover 22 Channel member 22a Surface 23 Water passage hole 24 Heat resistant glass detachment prevention 24A Indoor side glass detachment prevention 24B Outdoor glass detachment prevention 25 Mounting piece part 26 Detachment piece part 27 Engagement hole 38 Holding piece part 29 Engaging groove part 30 Insertion piece part 31 Detachment piece part 32 Locking piece part 33 Locking piece 34 Locking piece A Indoor side B Outdoor side

Claims (9)

In the fire prevention structure of the double glazing window that is made by attaching the double glazing to the window frame or window jar made of synthetic resin,
With depositing a metal cover at least right and left sides portions outer peripheral edge of the said double-glazing, the outer peripheral edge of the insulating glass is fitted in the inside inner groove in the window frame or Madokamachi, indoor side and the chamber The glass cover is held in a state of being sandwiched by both the indoor side and outdoor side glass detachment stoppers in the heat-resistant glass detachment prevention composed of each glass detachment prevention on the outside, so that the multi-layer glass is attached to the window frame or the window fence. Fireproof structure of double-glazed glass window, characterized by wearing As a metal cover, a stainless steel cover is attached to at least three sides of the upper edge and the left and right edges of the outer peripheral edge of the multilayer glass, and as a heat-resistant glass stopper, the metal glass stopper is used in the window frame or the window fence. The fireproof structure for a multi-layer glass window according to claim 1, wherein the fireproof structure is provided at least partially in the longitudinal direction of the inner peripheral groove. The stainless steel cover is formed with a channel member having a U-shaped cross section, and a plurality of water passage holes are partially provided in a longitudinal direction of the channel member on a surface of the channel member facing the outer peripheral end surface of the multilayer glass. Item 3. A fire prevention structure for a multi-layer glass window according to Item 2. The fire prevention of the multilayer glass window according to any one of claims 1 to 3, wherein a non-burnable spacer member that is non-burned after heating is interposed between the outer peripheral ends of a pair of plate glasses constituting the multilayer glass. Construction. The fireproof structure for a multi-layer glass window according to claim 4, wherein the non-burning spacer member is formed by disposing a silicone-based sealing material on the outside of the metal or resin spacer member. Any one of Claims 1-5 which put the flame-shielding material which has a foaming graphite as a main component between the metal cover and the inner-periphery groove part of the window frame into which the outer periphery end of a multilayer glass is fitted. A fireproof structure of a double-glazed glass window according to claim 1. In the part where the heat-shielding glass is not provided with the heat-shielding material, the part is provided directly or indirectly on the inner peripheral groove surface of the window frame or window sill and the heat-resistant glass is provided The fireproof structure for a multi-layer glass window according to claim 6, which is provided between the indoor glass stopper and the metal cover in the heat-resistant glass stopper. The inner peripheral groove of the window frame or Madokamachi, fire structure of insulating glass window according to any one of claims 1 to 7 digits set a metal angle member. A metal reinforcing material having a U-shaped, L-shaped, rectangular or pipe-shaped cross section is provided in the internal space of the window frame or window ridge, and between the outer surface of the metallic reinforcing material and the internal space. The fireproof structure for a multi-layer glass window according to any one of claims 1 to 8, wherein a flame barrier material comprising foamable graphite as a main component is interposed therebetween.

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