JP7267902B2 - Fireproof retrofit window structure - Google Patents

Description

The present invention relates to a fire rated retrofit window structure.

In recent years, as disclosed in Patent Document 1, by providing a heated foam material that foams in the event of a fire, sashes such as double sliding windows, single sliding windows, double-hung windows, and casement windows that have received fireproof certification have been developed. For this reason, various sashes certified as fireproof have come to be used as sashes installed in the openings of newly built buildings and houses. In particular, educational facilities such as schools, medical and welfare facilities such as hospitals, and non-residential facilities such as commercial facilities such as stores use more types of windows than residential facilities such as condominiums. For this reason, various sashes that have been certified as fireproof are available as fireproof sashes for new construction. and to meet the demands of designers.

JP 2015-148056 A

On the other hand, not only in new buildings, but also in the case of refurbishing the sashes of old buildings and houses, there is a demand for refurbishment with fire-retardant sashes for various types of windows, as in the case of new construction.
SUMMARY OF THE INVENTION An object of the present invention is to provide a fireproof refurbished window structure that can be refurbished with various types of fireproof sashes in the same way as when renovating a new building.

The present invention relates to a fireproof refurbishment window structure in which a new sash is arranged on the inner circumference of an existing frame, wherein a connection member is attached to the new frame of the new sash, the connection member is fixed to a frame, and the existing frame and the new construction are installed. A closing member is installed between the frame and the closing member, and the closing member comprises an upper closing member, a lower closing member, and left and right vertical closing members.

According to the fireproof retrofit window structure of the present invention, various kinds of fireproof sashes can be retrofitted.

BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional view which shows the fireproof refurbishment window structure of 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a cross-sectional view which shows the fireproof refurbishment window structure of 1st Embodiment. It is a perspective view which shows the existing lower frame of 1st Embodiment, and a new lower frame. It is a schematic diagram which shows the arrangement|positioning of the existing frame of 1st Embodiment, and a closing material. It is a cross-sectional view which shows the new shoji of 1st Embodiment. FIG. 5 is a vertical cross-sectional view showing a modified fireproof window structure according to a second embodiment of the present invention; FIG. 12 is a cross-sectional view showing a second embodiment of the fireproof refurbished window structure; FIG. 10 is a vertical cross-sectional view showing a modified fireproof window structure according to a third embodiment of the present invention; FIG. 11 is a cross-sectional view showing a fireproof refurbished window structure of a third embodiment; It is a longitudinal cross-sectional view which shows the existing lower frame of 4th Embodiment of this invention, and a new lower frame. It is a longitudinal cross-sectional view which shows the existing lower frame of 5th Embodiment of this invention, and a new lower frame. It is a longitudinal cross-sectional view which shows the existing lower frame of the modification of this invention, and a new lower frame. It is a schematic diagram which shows arrangement|positioning of the existing frame of the modification of this invention, and a closure material. It is a schematic diagram which shows arrangement|positioning of the existing frame of the modification of this invention, and a closure material. It is a longitudinal cross-sectional view which shows the existing lower frame of the modification of this invention, and a new lower frame. FIG. 5 is a vertical cross-sectional view showing a modified fireproof window structure according to the present invention; FIG. 4 is a cross-sectional view showing a modified fireproof retrofit window structure of the present invention; It is a longitudinal cross-sectional view which shows the existing lower frame of the modification of this invention, and a new lower frame. It is a longitudinal cross-sectional view which shows the existing lower frame of the modification of this invention, and a new lower frame. It is a longitudinal cross-sectional view which shows the existing lower frame of the modification of this invention, and a new lower frame. It is a longitudinal cross-sectional view which shows the existing lower frame of the modification of this invention, and a new lower frame.

[First embodiment]
A fireproof refurbished window structure according to a first embodiment of the present invention will be described below with reference to FIGS.
As shown in FIGS. 1 and 2, in the fireproof refurbished window structure of the first embodiment, a refurbished sash 1 is installed in an opening of a frame 2 made of concrete. Buildings having the skeleton 2 include residential condominiums and detached houses, educational facilities such as non-residential schools, public facilities such as government buildings, medical and welfare facilities such as hospitals, and commercial facilities such as stores.
The refurbished sash 1 comprises an existing frame 10 attached to a frame 2 and a new sash 4 installed on the inner peripheral side of the existing frame 10.例文帳に追加
The existing frame 10 is obtained by removing the existing shoji from the existing sash attached to the frame 2 and remaining on the frame 2 .
The new sash 4 is configured as a double sliding window by arranging the new shojis 5 and 6 in the new frame 20 so as to be able to slide.
1 and 2 are orthogonal to each other, the X-axis direction is the vertical direction of the remodeled sash 1, the Y-axis direction is the lateral direction of the remodeled sash 1, and the Z-axis direction is the remodeled sash 1. This is the prospective direction of the sash 1 . Further, in each cross-sectional view, hatching in cross sections of the new frame 20 of the new sash 4 and the new shojis 5 and 6 may be omitted in order to make the drawing easier to see.

The existing frame 10 is constructed by framing an existing upper frame 11, an existing lower frame 12, and left and right existing vertical frames 13, 14. As shown in FIG. The existing upper frame 11 , the existing lower frame 12 , and the existing left and right vertical frames 13 and 14 are each made of steel and fixed to the opening of the frame 2 via mortar 3 .
Note that the existing frame 10 of the present embodiment is a frame for FIX windows, but the type of the existing frame 10 is not limited to FIX windows, and may be sliding windows, double-hung windows, casement windows, etc., and is not particularly limited. .
In general, the mortar 3 is filled between the entire circumference of the outer peripheral surface of the existing frame 10 and the building frame 2. There are also cases where In the modified sash 1 of this embodiment, as shown in FIG. 3, the mortar 3 is filled over the entire outer peripheral surface of the existing frame 10 .

The new sash 4 is a double sliding window having a fireproof performance including a newly installed frame 20 and newly installed shojis 5 and 6. - 特許庁This new sash 4 is the same sash as a fireproof sash that can be installed in a new building or the like after being certified for fireproof performance. For this reason, the new sash 4 of the present embodiment is a double sliding window, but a fixed window, a vertical sliding window, a casement window, an inwardly tilting window, an outwardly tilting window, a sliding window, a stepped window, a continuous window, etc. New sashes for various certified window types are available.

The newly-established frame 20 is composed of a newly-established upper frame 21, a newly-established lower frame 22, and left and right newly-established vertical frames 23, 24 as frameworks.
Anchor members 25 are joined to the new upper frame 21, the new lower frame 22 and the new vertical frames 23 and 24, as shown in FIGS.
The anchor member 25 includes a sash frame anchor 26 and a skeleton side anchor 27. - 特許庁The sash frame anchor 26 and the frame side anchor 27 are made of fire-resistant steel or the like.

The sash frame anchor 26 is a piece member having a locking piece 261 locked to the new upper frame 21, the new lower frame 22, and the new vertical frames 23 and 24, and a connecting piece 262 connected to the skeleton side anchor 27. is. The sash frame anchors 26 are attached at one or more locations in the longitudinal direction of each of the frames 21-24. Also, the sash frame anchor 26 is formed in accordance with the shape of each of the frames 21-24. For example, the newly installed upper frame 21 and the newly installed vertical frames 23 and 24 have a pair of projecting pieces to which the locking pieces 261 are locked are opposed to each other in the projection direction, and the locking pieces 261 of the sash frame anchor 26 are also formed by these projections. It has a shape that can be locked to the piece. On the other hand, in the new lower frame 22, since the height positions of the pair of projecting pieces to which the locking pieces 261 are locked are different, the locking pieces 261 of the sash frame anchor 26 are also shaped so that they can be locked to these projecting pieces. It is

The frame-side anchor 27 is an angle member with an L-shaped cross section having a connecting piece 271 and a fixing piece 272 that are substantially perpendicular to each other. The connecting piece 271 is welded to the connecting piece 262 of the sash frame anchor 26 .
The fixed pieces 272 of the frame-side anchors 27 are arranged along the inner peripheral surfaces of the existing upper frame 11, the existing lower frame 12, and the existing vertical frames 13 and 14. It is fixed to the frame 2 by a hole-in anchor 30 which is a frame connection member that reaches the concrete frame 2 through the holes.
Therefore, the newly installed upper frame 21 , the newly installed lower frame 22 , and the newly installed vertical frames 23 and 24 are fixed to the frame 2 by anchor members 25 and hole-in anchors 30 . In this embodiment, a sash frame anchor 26 is attached to the new frame 20 , and a frame-side anchor 27 is fixed to the sash frame anchor 26 by welding and integrated as an anchor member 25 . Therefore, the connecting member attached to the newly installed frame 20 is composed of the anchor member 25, and the anchor member 25, which is the connecting member, is fixed to the skeleton 2 by the hole-in anchor 30, which is the skeleton connecting member.

A gap between the existing frame 10 and the new frame 20 is provided with a plugging material 40 that abuts against the existing frame 10 and the new frame 20 to ensure flame-shielding properties in the gap. The closing members 40 include an upper closing member 41 that closes the gap between the existing upper frame 11 and the new upper frame 21, a lower closing member 42 that closes the gap between the existing lower frame 12 and the new lower frame 22, and left and right existing vertical frames. 13, 14 and vertical closing members 43, 44 closing the gap between the new vertical frames 23, 24.
As shown in FIG. 1, the upper closing member 41 is screwed in contact with the interior surface of the existing upper frame 11 and the interior surface of the new upper frame 21 . Specifically, the upper closing member 41 includes an interior surface portion 411 screwed to the interior surface of the existing upper frame 11, a connecting surface portion 412 extending from the lower end of the interior surface portion 411 to the exterior side, and a chamber of the connecting surface portion 412. It has a fixed surface portion 413 extending downward from the outer edge and screwed to the interior surface of the new upper frame 21, and a lower surface portion 414 extending from the lower end of the fixed surface portion 413 toward the interior of the room. The upper closing member 41 is a long member extending along the longitudinal direction of the existing upper frame 11 and the new upper frame 21, that is, along the Y-axis direction.

As shown in FIGS. 1 and 3, the lower closing member 42 is in contact with and screwed to the upper surface of the existing lower frame 12 , and is provided in contact with the interior surface of the new lower frame 22 . Specifically, the lower closing member 42 includes a projection surface portion 421 screwed to the upper surface of the existing lower frame 12, and a projection surface portion 422 extending upward from the outdoor side edge of the projection surface portion 421. It is formed in a substantially L shape. The lower closing member 42 is a long member that extends along the longitudinal direction of the existing lower frame 12 and the new lower frame 22, that is, along the Y-axis direction.
The facing surface portion 422 of the lower closing member 42 is only in contact with the interior surface of the new lower frame 22 and is not screwed. You can stop.

As shown in FIG. 2, the vertical blocking members 43 and 44 are screwed in contact with the prospective surfaces of the existing vertical frames 13 and 14 and the interior surfaces of the new vertical frames 23 and 24 . Specifically, the vertical blocking members 43 and 44 are composed of prospective surface portions 431 and 441 screwed to the prospective surfaces of the existing vertical frames 13 and 14, and prospective surface portions screwed to the interior surfaces of the new vertical frames 23 and 24. 432 and 442, and is formed to have a substantially L-shaped cross section. The vertical blocking members 43 and 44 are long members extending along the longitudinal direction of the existing vertical frames 13 and 14 and the new vertical frames 23 and 24, that is, along the X-axis direction.

The upper closing member 41, the lower closing member 42, and the vertical closing members 43 and 44 are made of steel such as incombustible steel. are placed along. Between the upper closing member 41 and the lower closing member 42 and the vertical closing members 43 and 44, and between the vertical closing members 43 and 44 and the existing vertical frames 13 and 14, there is no need to improve workability and prevent fires. The gaps S1 and S2 are set in consideration of thermal elongation and the like.
For example, if a gap of about 1 mm is provided as the gaps S1 and S2, the closing members 41 to 44 can be easily arranged and workability can be improved. In addition, when each of the closing members 41 to 44 thermally expands due to heat during a fire, if the gaps S1 and S2 are set with dimensions that take into consideration the thermal expansion, in addition to improving workability, each closing member 41 expands during thermal expansion. ∼44 can be prevented from being subjected to a large stress. Note that the dimension in consideration of thermal elongation may be set based on the linear expansion coefficient based on the material of each of the closing members 41 to 44 and the length dimension. do it.
In the closing member 40 of this embodiment, left and right vertical closing members 43 and 44 are arranged between an upper and lower closing member 41 and a lower closing member 42 . For this reason, between the upper surfaces of the left and right vertical blocking members 43 and 44 and the lower surface of the upper blocking member 41, and between the lower surfaces of the vertical blocking members 43 and 44 and the upper surface of the lower blocking member 42, thermal elongation A gap S1 is provided for absorbing the That is, the gap S1 is set according to the dimension of thermal expansion of the left and right vertical blocking members 43 and 44 due to heat during fire. Note that the gap S1 is not limited to being formed on both the upper and lower surfaces of the vertical blocking members 43 and 44, and only one of them, for example, between the upper surfaces of the vertical blocking members 43 and 44 and the upper blocking member 41. A gap S1 may be formed in .
In the present invention, the blocking member 40 is sufficient as long as it can block flames from passing between the existing frame 10 and the new frame 20 in the event of a fire. Therefore, when the closing member 40 is arranged so as to be continuous on all four sides, it means that the upper closing member 41, the lower closing member 42, and the vertical closing members 43 and 44, which are thermally stretched, are in contact with each other and are continuously arranged on all four sides at least in the event of a fire. It may be arranged in the normal time when no fire occurs, and includes those arranged so that the gap S1 for thermal expansion and construction is formed. In addition, when the closing member 40 is continuously arranged on all four sides so as to close the gap between the existing frame 10 and the newly installed frame 20 in the event of a fire, it is not only the case where the closing members 41 to 44 come into contact with each other, but also the flame blocking performance. Including cases where slight gaps that do not affect are left.
Furthermore, since the upper closing member 41 and the lower closing member 42 also thermally expand, a gap S2 is also formed between the left and right end faces of the upper closing member 41 and the lower closing member 42 and the existing vertical frames 13 and 14. . The gap S2 is set according to the dimension of thermal expansion of the upper closing member 41 and the lower closing member 42 due to heat during fire. This gap S2 may also be formed only on one of the left and right end faces of the upper closing member 41 and the lower closing member 42 .
Also, only one of the gaps S1 and S2 may be provided, or both of the gaps S1 and S2 may be eliminated. For example, when the plugging material 40 has a short longitudinal dimension and thus is less affected by thermal elongation, or when the plugging material 40 is made of a material that is difficult to thermally expand, the upper plugging material 41 and the lower plugging material 42 , the vertical closing members 43 and 44 may be brought into contact in advance, or the left and right end surfaces of the upper closing member 41 and the lower closing member 42 may be brought into contact with the existing vertical frames 13 and 14 in advance.

A cover material 50 is attached to the indoor side of the new frame 20 to hide the closing material 40 . The cover member 50 includes an upper cover member 51 , a lower cover member 52 and vertical cover members 53 and 54 .
Further, on the indoor side of the existing frame 10, a decorative material 60 is provided to cover the opening surface to which the existing frame 10 was attached. The decorative material 60 includes an upper decorative material 61 , a lower decorative material 62 , and vertical decorative materials 63 and 64 .

The upper cover member 51 includes a projected surface portion 511 screwed to the lower surface portion 414 of the upper closing member 41, a facing surface portion 512 extending upward from the projected surface portion 511, and a top end of the facing surface portion 512 folded back toward the outside of the room. and a receiving surface portion 513 . The receiving surface portion 513 is provided to support the backup material 55 and the sealing material 56 that are filled in the gap with the upper decorative material 61 .

Since the lower cover member 52 and the vertical cover members 53 and 54 are parts having the same shape as the upper cover member 51, description thereof will be omitted.
A bracket 57 having an L-shaped cross section is fixed to the new lower frame 22 , and the lower cover member 52 is screwed to the bracket 57 . A bracket 58 having an L-shaped cross section is fixed to the new vertical frames 23 and 24 with the vertical blocking members 43 and 44 interposed therebetween, and the vertical cover members 53 and 54 are screwed to the bracket 58 .
A backup material 55 and a sealing material 56 are also filled between the lower cover member 52 , vertical cover members 53 and 54 and the lower decorative member 62 and vertical decorative members 63 and 64 .
The brackets 57 and 58 may be long members extending along the longitudinal direction of the new lower frame 22 and the new vertical frames 23 and 24, or may be provided with a plurality of piece members.

An external parting member 70 is attached to the outdoor surfaces of the new upper frame 21 and the new vertical frames 23 and 24 . A draining material 71 is screwed to the outdoor surface of the new lower frame 22 . Seal receiving plates 72 are attached to both left and right ends of the draining member 71 .
A sealing material 76 is filled between the external parting material 70 , the draining material 71 , and the outer wall material 7 provided on the outdoor side of the frame 2 .
That is, as shown in FIG. 1 , a backup material 75 and a sealing material 76 are filled between the outer parting material 70 attached to the newly installed upper frame 21 and the outer wall material 7 .
In addition, as shown in FIG. 2, a backup material 75 and a sealing material 76 are also filled between the external parting material 70 attached to the new vertical frames 23 and 24 and the side surface of the exterior wall material 7 . The backup material 75 and the sealing material 76 filled between the external parting material 70 of the newly installed vertical frames 23 and 24 and the side surface of the external wall material 7 serve as the seal receiving plate 72 of the draining material 71 and the side surface of the external wall material 7. It is also continuously filled in between.
As shown in FIG. 1 , a backup material 75 and a sealing material 76 are also filled between the lower end of the draining material 71 and the frame 2 .

As shown in FIGS. 1 and 2, a joint portion between the new frame 20 and the external parting material 70 is also filled with a backup material 77 and a sealing material 78 . Specifically, as shown in FIG. 1, the joint portion between the external parting member 70 and the new upper frame 21 is formed as a groove surrounded by the external parting member 70 and the new upper frame 21, and the backup material is inserted into the groove. 77 and sealing material 78 are filled.
A joint portion between the draining material 71 and the new lower frame 22 is also formed as a groove surrounded by the draining material 71 and the new lower frame 22, and the groove is filled with a backup material 77 and a sealing material 78.
Furthermore, as shown in FIG. 2, the joints between the outer parting member 70 and the newly installed vertical frames 23, 24 are also formed into grooves surrounded by the external parting member 70 and the new vertical frames 23, 24. A material 77 and a sealing material 78 are filled.

The newly installed shojis 5 and 6 are shojis for sliding windows. In addition, the new sash 4 including the new frame 20 and the new shoji 5 and 6 is a double sliding window with fireproof performance, and has a configuration necessary for obtaining fireproof certification, for example, a heat foaming that expands in the event of a fire and shields the flame. Materials are provided as appropriate.
FIG. 5 is a cross-sectional view showing an example of newly installed shoji 5, 6 used for renovation. The new shoji screens 5 and 6 shown in FIG. 5 are composed of an upper frame and a lower frame (not shown), a door frame 81, and a meeting frame 82 in a rectangular frame shape, and a wire glass 83 and a low glass frame 83 are placed in the frame. - E glass 84 is incorporated.
A reinforcing member 85 made of steel is arranged over the entire length of each meeting frame 82, and a heating foam member 86 is adhered to the reinforcing member 85 over the entire length. Furthermore, a heating foam material 86 is adhered to the meeting frame 82 of the new shoji 6 on the room side, facing the outer peripheral surface of the Low-E glass 84 . The heating foam material 86 is also adhered to the door frame 81, respectively. Although not shown, the heating foam material is also adhered to the upper frame and the lower frame.
Further, a low-temperature foaming type heating foam material 87 that foams at a lower temperature than the heating foam material 86 is adhered to the opposing surfaces of the stiles 82 . Although not shown, a low-temperature foaming type heating foam material is adhered to the surface of the lower frame and the surface of the lower frame facing the rail of the lower frame.
These heated foam materials 86 and 87 are foamed in the event of a fire, and can block the gap between the new shoji screens 5 and 6 and the new frame 20, the gap between the meeting frames 82, and the like, and block the flame.

[Renovation work]
Next, an example of remodeling work for the new sash 4 of this embodiment will be described.
The new sash 4 is manufactured at a sash manufacturing factory. At this time, if it is possible to deliver the sash assembled to the remodeling site, such as a sash with a small size, the sash is assembled at the manufacturing plant and delivered to the remodeling site. On the other hand, if the sash is large in size and cannot be delivered to the refurbishment site in a sash-assembled state, parts are attached at the manufacturing factory, and the sash is assembled at the construction site. The work of attaching the glass to the newly installed shojis 5 and 6 is separately performed at the renovation site.

At the renovation site where the existing sash is installed, the existing shoji is removed, and pilot holes for the hole-in anchors 30 are constructed from the existing frame 10 toward the skeleton 2. - 特許庁
Next, the hole-in anchor 30 is inserted into the pilot hole through the skeleton side anchor 27, the hole-in anchor 30 is driven into the skeleton 2 and fixed, and the skeleton side anchor 27 is attached to the skeleton 2 through the hole-in anchor 30. fixed.
Next, the closing member 40 is screwed and fixed to the existing frame 10 . Also, a sash frame anchor 26 is attached to the new frame 20 .
Then, the new frame 20 is erected within the existing frame 10.例文帳に追加At this time, the new frame 20 may be positioned and temporarily fixed.
Next, the sash frame anchor 26 and the frame side anchor 27 are welded and fixed. At this time, since the closing member 40 is fixed to the existing frame 10, the welding work may be performed from the outdoor side. In many cases, such as school classrooms, there is a veranda or an outside corridor on the outdoor side of the existing frame 10, so welding work can be easily performed even from the outdoor side.
On the other hand, if welding cannot be performed from the outdoor side, the sealing material 40 may be attached after welding the sash frame anchors 26 and the frame side anchors 27 .
By welding the sash frame anchors 26 and the frame-side anchors 27, the new frame 20 is formed by connecting the anchor members 25 (the sash frame anchors 26 and the frame-side anchors 27), which are connecting members, and the hole-in anchors 30, which are the frame connecting members. It is fixed to the frame 2 via the

Next, finishing work on the outdoor side of the new frame 20 and finishing work on the indoor side are performed. In the finishing work on the outdoor side, first, an external parting member 70 and a draining member 71 are attached to the new frame 20 from the outdoor side with screws. Then, a backup material 75 and a sealing material 76 are filled between the outer parting material 70 and the draining material 71 and the outer wall material 7 and the frame 2 . Also, a backup material 77 and a sealing material 78 are filled between the external parting material 70 , the draining material 71 , and the new frame 20 . As a result, the outdoor side of the refurbished sash 1 is sealed, and the outdoor side finishing work is completed.
In the finishing work on the indoor side, first, the upper closing member 41 and the brackets 57 and 58 are screwed to the new frame 20 . Next, the indoor-side cover member 50 that covers the closing member 40 is screwed to the upper closing member 41 and the brackets 57 and 58 . Then, a backup material 55 and a sealing material 56 are filled between the cover material 50 and the decorative material 60 to carry out sealing work, and finishing work on the interior side is completed.
After that, the newly installed shojis 5 and 6 are incorporated into the newly installed frame 20 to complete the renovation work.

[Action and effect of the first embodiment]
According to the modified fireproof window structure of the first embodiment, the new frame 20 of the new sash 4 is fixed to the frame 2 via the anchor members 25 and the hole-in anchors 30 . The anchor member 25 and the hole-in anchor 30 have fire resistance, and the newly installed sash 4 having fire resistance can be directly fixed to the frame 2 via a fire resistant material to form the modified sash 1 having fire resistance. For this reason, if new sashes 4 of various types of windows individually certified for fire prevention for newly built buildings and houses are connected to the frame 2 using anchor members 25 and hole-in anchors 30, various types of windows can be obtained. can be made fireproof. Therefore, according to the first embodiment, when the existing sashes are remodeled, they can be remodeled into various types of fireproof sashes as in the case of new construction.
Further, since the new frame 20 is fixed to the building frame 2 using the anchor members 25 and the hole-in anchors 30, there is no need to configure the new frame 20 according to the type and shape of the existing frame 10. 4 can be used as is.
Furthermore, since the new frame 20 is not configured to match the existing frame 10, there may be a gap between the existing frame 10 and the new frame 20. is provided, the fireproof performance of the gap between the existing frame 10 and the new frame 20 can also be ensured.
Therefore, the refurbished sash 1 having fireproof performance can be easily configured, and the new sash 4 of the refurbished sash 1 can use a sash certified for fire prevention for new construction, so compared to the case of using a sash dedicated to refurbishment. , a modified sash 1 for various types of windows can be constructed at low cost.

The upper closing member 41, the lower closing member 42, and the vertical closing members 43 and 44, which constitute the closing member 40, are arranged with a gap S1 in consideration of construction workability and thermal elongation in the event of a fire. can be improved. Moreover, when the upper closing member 41, the lower closing member 42, and the vertical closing members 43, 44 are thermally expanded by the heat of the fire, the gaps between the upper closing member 41, the lower closing member 42, and the vertical closing members 43, 44 It is possible to configure the closing member 40 that is continuous on all four sides by eliminating the . As a result, the flame can be reliably blocked, and the fireproof performance of the refurbished sash 1 can be improved.

Since the hole-in anchor 30, which is a skeleton connecting member, is fixed to the skeleton 2, and the skeleton side anchor 27 is fixed to the skeleton 2 by the hole-in anchor 30, the skeleton side anchor 27 and the hole-in anchor 30 are not welded. It can be connected, and the welding work at the refurbishment site can be reduced.

[Second embodiment]
6 and 7 are a vertical sectional view and a horizontal sectional view showing a refurbished sash 1B of the second embodiment. The refurbished sash 1B uses a concrete screw 30B instead of the hole-in anchor 30 as a frame connecting member, and a Z It is different from the modified sash 1 of the first embodiment in that a letter-shaped lower covering material 42B is used. For this reason, the same reference numerals are given to the same configurations as in the first embodiment, and the description thereof is omitted.

Concrete screws 30B, which are skeleton connecting members, are screwed from the skeleton side anchors 27 to the skeleton 2 through the existing frame 10, similarly to the hole-in anchors 30, and fix the skeleton side anchors 27 to the skeleton 2.
In addition, in the modified sash 1B shown in FIG. 6, the left and right ends and the central portion of the existing upper frame 11 and the existing lower frame 12 are filled with the mortar 3, and there are places in the middle where the mortar 3 is not filled. In the existing vertical frames 13 and 14 shown in FIG. 7 as well, the mortar 3 is filled in the upper and lower ends and the central portion, and there are places in the middle where the mortar 3 is not filled. 6 and 7 are cross-sectional views of portions where the mortar 3 is not filled. For this reason, concrete screws 30B having a length that can be screwed into the building frame 2 are used so that they can be fixed to the building frame 2 even at locations where the mortar 3 is not filled.
The lower closing member 42B is provided with a projected surface portion 421B, a first facing surface portion 422B, and a second facing surface portion 423B, is formed into a Z-shaped (lightning bolt-shaped) cross section, and is made of a refractory material such as steel. It is a scale member.
The projected surface portion 421B is arranged along the upper surface of the existing lower frame 12 . The first viewing surface portion 422B extends upward from the interior-side edge of the projection surface portion 421B and is disposed in contact with the interior surface of the new lower frame 22 . The second viewing surface portion 423B extends downward from the outdoor side edge of the viewing surface portion 421B, is arranged along the indoor surface of the existing lower frame 12, abuts on the existing lower frame 12, and is screwed.
Although the first facing surface portion 422B is not screwed to the new lower frame 22, it may be screwed to the new lower frame 22.

Since the remodeling work of the remodeling sash 1B is the same as that of the remodeling sash 1 of the first embodiment, the description is omitted.

[Action and effect of the second embodiment]
According to the refurbished sash 1B of the second embodiment, the same effects as those of the first embodiment are obtained. That is, since the concrete screw 30B is screwed up to the skeleton 2 in the same manner as the hole-in anchor 30, the new frame 20 can be directly fixed to the skeleton 2, and the same effects as in the first embodiment can be achieved. . Further, since the concrete screws 30B have a length that can be screwed into the frame 2, even if there are places where the mortar 3 is not filled, they can be securely screwed into the frame 2 and the new frame 20 can be installed. can be fixed.
In addition, the lower closing member 42B is formed in a Z-shaped cross section. It is possible to improve the adhesion with and further improve the flame-shielding property.

[Third embodiment]
8 and 9 are a vertical sectional view and a horizontal sectional view showing a refurbished sash 1C of the third embodiment. A modified sash 1C differs from the modified sash 1B of the second embodiment in that a fisher plug 30C is used as a skeleton connecting member, and the modified sash 1 of the first embodiment is the same as that of the second embodiment. A further difference is that a lower covering member 42B is used. For this reason, the same reference numerals are assigned to the same configurations as those in the first and second embodiments, and the description thereof is omitted.

Fischer plugs 30C, which are skeleton connecting members, extend from the skeleton side anchors 27 to the skeleton 2 through the existing frame 10, and fix the skeleton side anchors 27 to the skeleton 2, like the concrete screws 30B.

Since the remodeling work of the remodeling sash 1C is the same as that of the remodeling sashes 1, 1B of the first and second embodiments, the description is omitted.

[Action and effect of the third embodiment]
According to the refurbished sash 1C of the third embodiment, the same effects as those of the first and second embodiments are obtained. That is, since the fisher plug 30C is fixed to the skeleton 2 in the same manner as the hole-in anchor 30 and the concrete screw 30B, the new frame 20 can be directly fixed to the skeleton 2, which is similar to the first and second embodiments. It can be effective.
In addition, since the lower closing member 42B having a Z-shaped cross section, which is the same as that of the second embodiment, is used, the flame-shielding property can be further improved.

[Fourth embodiment]
A modified sash 1D of the fourth embodiment will be described with reference to FIG.
The modified sash 1D regards the existing frame 10 made of steel as a part of the frame 2, and connects the new frame 20 to the existing frame 10, that is, the frame 2 with anchor members 25. That is, the refurbished sashes 1, 1B, and 1C of the above-described embodiments differ in that the hole-in anchors 30, concrete screws 30B, and fisher plugs 30C, which are structural connection members, are not used. For this reason, the same reference numerals are assigned to the same configurations as those of the above-described embodiments, and the description thereof is omitted. In addition, in FIG. 10, the fixing structure of the newly installed lower frame 22 is illustrated. The newly installed upper frame 21 and the newly installed vertical frames 23 and 24 also have the same fixed structure, although not shown. Further, the mortar 3 may be filled over the entire circumference of the existing frame 10, or there may be a portion where the mortar 3 is not filled. Any structure that can be regarded as

The modified sash 1D differs from the modified sash 1 of the first embodiment in that the frame-side anchors 27 are fixed to the existing lower frame 12 by welding, and the rest of the configuration is the same. For this reason, the same reference numerals are given to the same configurations as in the first embodiment, and the description thereof is omitted. Although illustration is omitted, the frame-side anchors 27 are also fixed to the existing upper frame 11 and the existing vertical frames 13 and 14 by welding.

The refurbishment work of the refurbished sash 1D is the same as that of the refurbished sash 1 of the first embodiment except that the skeleton side anchor 27 is fixed to the existing frame 10 by welding without using a skeleton connecting member. omitted. Either the work of welding the frame-side anchor 27 to the existing frame 10 or the work of welding the sash frame anchor 26 may be performed first.

[Action and effect of the fourth embodiment]
According to the refurbished sash 1D of the fourth embodiment, the same effects as those of the above embodiments are obtained. That is, since the existing frame 10 fixed to the frame 2 via the mortar 3 is made of fire-resistant steel, it functions as a part of the frame 2 . In the refurbished sash 1D, since the frame-side anchors 27 are welded to the existing frame 10, the new frame 20 is directly fixed to the frame 2, and the same effects as in the first embodiment can be obtained.
Furthermore, since there is no need to use the hole-in anchor 30, the concrete screw 30B, and the fisher plug 30C, which are the skeleton connection members, the number of parts is reduced, and it is necessary to process pilot holes for inserting the skeleton connection members at the renovation site. Since there is no such thing as , the refurbishment workability can also be improved.

[Fifth embodiment]
A modified sash 1E of the fifth embodiment will be described with reference to FIG.
The refurbished sash 1E differs from each of the above embodiments in that the existing frame 10E is an aluminum sash and in that the shape of the lower covering material 42E differs from each of the above embodiments. Although FIG. 11 shows the existing lower frame 12E and the new lower frame 22, other existing upper frames and existing vertical frames (not shown) are also made of aluminum. The mortar 3 may be filled over the entire circumference of the existing frame 10E, or there may be a portion where the mortar 3 is not filled.

The existing frame 10E made of aluminum is, as shown in FIG. 11, an existing frame for a double sliding window. Therefore, the existing lower frame 12</b>E includes an outdoor side rail 101 and an indoor side rail 102 . This existing frame 10</b>E is attached to an anchor plate 28 embedded in the frame 2 . That is, in the ready-made sash before renovation, the existing frame 10E is fixed to the frame 2 via the anchor plate 28 .
Then, the frame-side anchors 27 for fixing the new frame 20 (the new bottom frame 22 in FIG. 11) are inserted and fixed into the pilot holes formed from the existing frame 10E (the existing bottom frame 12E in FIG. 11) to the frame 2. It is fixed to the skeleton 2 by a fisher plug 30C, which is a skeleton connecting member.
The frame-side anchors 27 may be provided at substantially the same positions as the anchor plates 28 in the longitudinal direction of the existing frame 10 (the Y-axis direction for the existing upper frame and the existing lower frame 12E, and the X-axis direction for the existing vertical frames). However, it may be provided at a position different from that of the anchor plate 28 in the longitudinal direction.
Further, the frame-side anchor 27 is arranged between the outdoor side rail 101 and the indoor side rail 102 of the existing upper frame and the existing lower frame 12E.

The remodeling work of the refurbished sash 1E consists of forming pilot holes from the existing frame 10E to the frame 2 through the mortar 3, and fixing the frame side anchor 27 to the frame 2 with a frame connection member (fisher plug 30C). Since it is the same as the modified sashes 1, 1B and 1C of the first, second and third embodiments, the description is omitted.
The lower closing member 42E is a long steel plate extending along the longitudinal direction (Y-axis direction) of the existing lower frame 12E and the new lower frame 22. As shown in FIG. The lower closing member 42E is screwed to the existing lower frame 12E and is in contact with the interior surface of the new lower frame 22. As shown in FIG. As a result, the gap between the existing lower frame 12E and the new lower frame 22 is closed with the lower closing member 42E. In addition, gaps between the existing upper frame and the new upper frame and gaps between the existing vertical frame and the new vertical frame are also closed with sealing materials. The cross-sectional shape of these closing members may be set according to the mounting position of the closing member in each frame.
Incidentally, in the modified sash 1E, the hole-in anchor 30 or the concrete screw 30B may be used instead of the fisher plug 30C.

[Action and effect of the fifth embodiment]
According to the refurbished sash 1E of the fifth embodiment, the same effects as those of the above embodiments are obtained. That is, since the fisher plug 30</b>C that fixes the frame-side anchor 27 to the frame side is fixed to the frame 2 , the new frame 20 can be directly fixed to the frame 2 . Therefore, even if the existing frame 10E is made of aluminum, the modified sash 1 having fireproof performance can be constructed, and the same effects as those of the first, second, and third embodiments can be obtained.
Further, since the frame-side anchor 27 is arranged between the outdoor rail 101 and the indoor-side rail 102, when the frame-side anchor 27 is fixed to the frame 2 by the fisher plug 30C, the rotation of the frame-side anchor 27 is It can be prevented by controlling with the rail 101 and the indoor rail 102. - 特許庁Therefore, the work of fixing the frame-side anchor 27 with the fisher plug 30C can be facilitated, and the remodeling workability can be improved.

[Modification]
The present invention is not limited to the configurations described in each of the above embodiments, and modifications within the scope of achieving the object of the present invention are included in the present invention.
For example, in the first to third embodiments, the skeleton side anchor 27 was fixed to the skeleton 2 by the hole-in anchor 30, the concrete screw 30B, and the fisher plug 30C, which are the skeleton connecting members, but the modified sash shown in FIG. As in 1F, the plate 31 may be fixed on the existing lower frame 12 with hole-in anchors 30 or the like, and the frame-side anchors 27 may be welded to this plate 31 . That is, a skeleton connecting member with a plate 31 may be penetrated through the existing frame 10 and fixed to the skeleton 2, and the skeleton side anchor 27, which is a connecting member, may be fixed to the plate 31 of the skeleton connecting member by welding or the like.

The closing member 40 is not limited to the configuration shown in FIG. For example, the upper and lower ends of the vertical blocking members 43 and 44 are brought into contact with the existing upper frame 11 and the existing lower frame 12 with a gap therebetween, and the upper blocking member 41 and the lower blocking member 42 are arranged between the vertical blocking members 43 and 44. may be placed.
Moreover, the closing member 40 may be configured so as to be continuous around at least four circumferences in the event of fire. Therefore, the present invention is not limited to four steel materials, ie, the upper closing member 41, the lower closing member 42, and the vertical closing members 43 and 44, as in each of the above-described embodiments.
For example, as shown in FIG. 13, four steel materials, an upper closing member 41B, a lower closing member 42B, and vertical closing members 43B and 44B, and the longitudinal sides of the upper closing member 41B, the lower closing member 42B, and the vertical closing members 43B and 44B The closing member 40B may be configured by including a noncombustible material 45 such as mortar, rock wool, or aluminum tape that fills the gap between the end faces in the direction and the existing frame 10 . In addition, since the upper end faces of the vertical blocking members 43B and 44B are set lower than the lower face of the upper blocking member 41B and the lower end faces of the vertical blocking members 43B and 44B are higher than the upper face of the lower blocking member 42B, fire Even if the upper closing member 41B, the lower closing member 42B, and the vertical closing members 43B and 44B are thermally expanded, the respective steel materials do not interfere with each other.
Further, as shown in FIG. 14, the upper closing member 41C and the lower closing member 42C are composed of a plurality of steel materials (three pieces in FIG. 14), and the gaps between the steel materials are filled with the noncombustible material 46 to form the closing member 40C. may be used. In FIG. 14, the vertical closing members 43C and 44C are composed of a single steel material like the closing member 40B. It may be composed of a noncombustible material that is
The incombustible materials 45 and 46 are compressed when the steel material thermally expands, and can absorb the thermal expansion of the steel material. For this reason, even before the fire, the closing members 40B and 40C can have the steel members and the noncombustible members 45 and 46 arranged without gaps, and can be continuously formed on all four sides. In addition, since the incombustible materials 45 and 46 are mortar, rock wool, or aluminum tape, they do not burn off in the event of a fire. And the gap between the new frames 20 can be reliably shielded from flames.

Furthermore, the sealing material 40 is not limited to the material using steel material, and for example, only noncombustible material such as mortar or rock wool may be filled between the existing frame 10 and the new frame 20 to serve as the sealing material.
In addition, between the existing upper frame 11 and the new upper frame 21 and between the existing lower frame 12 and the new lower frame 22, an upper closing member 41 and a lower closing member 42 are arranged, and the existing vertical frames 13 and 14 and the new vertical frame are arranged. A plugging material made of steel and a plugging material made of a noncombustible material may be combined so as to fill the space between 23 and 24 with a noncombustible material such as mortar or rock wool.
Further, depending on the combination of the existing frame 10 and the newly installed frame 20, it is not necessary to provide the closing material so as to be continuous on all four sides. For example, if the existing lower frame 12 and the new lower frame 22 are in direct contact with each other and no gap is generated, the lower closing member may not be provided between the existing lower frame 12 and the new lower frame 22 . Therefore, the closing material may be provided between the existing frames 10 and the new frames 20 where there is a gap.
Furthermore, the closing material is not limited to completely closing the gap between the existing frame 10 and the newly installed frame 20, and may not cover a part of the gap as long as it can ensure the flame-shielding property. In short, the sealing material may be any material as long as it can ensure the flameproof performance between the existing frame 10 and the newly installed frame 20 and ensure the fireproof performance required for fireproof certification.

In each of the above embodiments, the connecting member (anchor member 25) is composed of the sash frame anchors 26 and the frame-side anchors 27, but the connecting member may be composed of one component. For example, as shown in FIG. 15, the connecting piece 262 of the sash frame anchor 26, which is a connecting member, may be extended to the existing lower frame 12 and fixed directly to the existing lower frame 12, that is, the frame 2. Although not shown in the drawings, the connecting piece 262 of the sash frame anchor 26 can be fixed to the building frame by a building frame connecting member, or fixed to the building frame connecting member by welding or the like, so that the connecting member (anchor member 25) can be formed as a single component. may be configured.
Moreover, as shown in FIGS. 10 and 12, when the building frame side anchor 27 is welded at two points, the sash frame anchor 26 and the building body side, the order of welding may be either first. That is, after welding the frame-side anchor 27 to the sash frame anchor 26, the frame-side anchor 27 may be welded to the frame, or the frame-side anchor 27 may be welded to the frame and then welded to the sash frame anchor 26. good too.

Further, the connection member attached to the new frame 20 and the skeleton connection member fixed to the skeleton 2 through the existing frame 10 may be connected by an intermediate connection member. For example, in FIG. 12, the sash frame anchor 26 may be used as the connection member, the plate 31 and hole-in anchor 30 may be used as the skeleton connection member, and the skeleton side anchor 27 may be used as the intermediate connection member. In this case, since the frame-side anchor 27 can be structurally regarded as a separate member from the sash frame anchor 26, the sash-frame anchor 26 and the frame-side anchor 27 may be connected by bolts or the like. Also, the plate 31 and the frame-side anchor 27 may be connected by bolts or the like.

When the concrete screw 30B and the fisher plug 30C, which are the frame connecting members, are screwed into the portion filled with the mortar 3, they need only have a length that can be screwed into the mortar 3. Therefore, as shown in FIGS. 16 and 17, when the entire circumference of the existing frame 10 is filled with mortar 3, the concrete screw 30B is screwed up to the mortar 3 and reaches the concrete skeleton 2. A length dimension that does not extend, ie, a dimension that is shorter than the concrete screw 30B shown in FIGS.
Similarly, as shown in FIG. 18, when the Fisher plug 30C is used and the mortar 3 is filled over the entire circumference of the existing frame 10E, the Fisher plug 30C is fixed to the mortar 3 and is made of concrete. It may be set to a length dimension that does not reach the skeleton 2 of.

In the present invention, the connection member attached to the new frame 20 is not limited to the anchor member 25, and any member that can fix the new frame 20 to the existing steel frame, frame connection member, or intermediate connection member can be used.
In the present invention, the skeleton connection member fixed to the skeleton 2 is not limited to the hole-in anchor 30, the concrete screw 30B, and the fisher plug 30C. If it is

In the present invention, the frame to which the new frame 20 is fixed is not limited to concrete or mortar, and may be, for example, a frame 2B made of ALC panels as shown in FIG. Furthermore, as shown in FIGS. 20 and 21, the frame 2C to which the existing aluminum frame 10E and the existing steel frame 10 are attached is not limited to concrete, mortar, and ALC panels, but may be a steel frame or the like, and can be used as a frame. Any noncombustible material may be used. Therefore, in FIGS. 20 and 21, the hatching of the skeleton 2C is omitted in order to show that the type of the skeleton 2C is not limited.

In each of the above embodiments, the modified sash 1 in which one new sash 4 is arranged in the existing frames 10 and 10E has been described. or a stepped window.

[Summary of Invention]
The fireproof refurbished window structure of the present invention is a fireproof refurbished window structure in which a new sash is arranged on the inner circumference of an existing frame, a connecting member is attached to the new frame of the new sash, the connecting member is fixed to the frame, and the A closing member is installed between the existing frame and the new frame, and the closing member comprises an upper closing member, a lower closing member, and left and right vertical closing members.
According to the present invention, since the connection member is attached to the new frame of the new sash and the connection member is fixed to the frame, the new sash can be fixed to the frame via the connection member. Furthermore, since the sealing material is provided between the existing frame and the new frame, it is possible to secure flame insulation between the existing frame and the new frame. For this reason, new sashes for various types of windows that have received fire safety certification can be fixed to the building frame using connecting members, and by installing a sealing material between the existing and new frames, it is possible to refurbish sashes for various types of windows. The sash can be made fireproof, and when remodeling the existing sash, it can be remodeled into various types of fireproof sashes as in the case of new construction.

In the fireproof refurbished window structure of the present invention, it is preferable that the upper closing member, the lower closing member, and the left and right vertical covering members are continuous on all four sides.
According to the present invention, the closing member is composed of the upper closing member, the lower closing member, and the left and right vertical closing members, and since these are arranged continuously around the four circumferences, the gap between the new frame and the existing frame is continuously arranged around the four circumferences. It can be blocked and fire performance can be improved.

In the fireproof refurbished window structure of the present invention, the left and right vertical blocking members are arranged between the upper blocking member and the lower blocking member. A gap may be formed between the upper surface of the material and the lower surface of the vertical closing member.
According to the present invention, since a gap is provided between the upper closing member, the lower closing member, and the vertical closing member, which constitute the closing member, the construction workability when installing the vertical closing member can be improved. Also, when the vertical covering material is thermally stretched by the heat of a fire, the gap can be eliminated, the fire can be reliably blocked, and the fireproof performance of the refurbished sash can be improved.

In the modified fireproof window structure of the present invention, gaps may be formed between the left and right end surfaces of the upper closing member and the lower closing member and the inner peripheral surfaces of the left and right existing vertical frames of the existing frame. .
According to the present invention, since a gap is provided between the upper and lower closing members constituting the closing members and the existing vertical frame, construction workability when installing the upper and lower closing members is improved. can improve. In addition, when each sealing material is thermally expanded by the heat of a fire, the gap between the existing vertical frame can be eliminated, the fire can be reliably blocked, and the fireproof performance of the refurbished sash can be improved.

In the fireproof refurbished window structure of the present invention, the closing members include an upper closing member, a lower closing member, left and right vertical closing members, and an incombustible material filled between the longitudinal end faces of each closing member and the existing frame. and may be composed of
According to the present invention, each sealing material and noncombustible material can be formed continuously on all four sides, and even in the event of a fire, the gap between the existing frame and the new frame can be reliably shielded from flames.

1...refurbished sash, 1B...refurbished sash, 1C...refurbished sash, 1D...refurbished sash, 1E...refurbished sash, 1F...refurbished sash, 2...framework, 2B...framework, 2C...framework, 3...mortar, 4...new sash , 5... New shoji, 6... New shoji, 7... Outer wall material, 10... Existing frame, 10E... Existing frame, 11... Existing upper frame, 12... Existing lower frame, 12E... Existing lower frame, 13... Existing vertical frame, 14 Existing vertical frame 20 Newly installed frame 21 Newly installed upper frame 22 Newly installed lower frame 23 Newly installed vertical frame 24 Newly installed vertical frame 25 Anchor member 26 Sash frame anchor 27 Frame side Anchor 28 Anchor plate 30 Hole-in anchor 30B Concrete screw 30C Fisher plug 31 Plate 40 Closing material 40B Closing material 40C Closing material 41 Upper closing material 41B Upper closing material 41C Upper closing material 42 Lower closing material 42B Lower closing material 42C Lower closing material 42E Lower closing material 43 Vertical closing material 43B Vertical closing material 43C Vertical closing Material 44 Vertical blocking material 44B Vertical blocking material 44C Vertical blocking material 45 Incombustible material 46 Incombustible material 50 Cover material 51 Upper cover material 52 Lower cover material 53 Vertical Cover material 54 Vertical cover material 55 Backup material 56 Seal material 57 Bracket 58 Bracket 60 Decorative material 61 Upper decorative material 62 Lower decorative material 63 Vertical decorative material 64 Vertical decorative material 70 External parting material 71 Draining material 72 Seal receiving plate 75 Backup material 76 Sealing material 77 Backup material 78 Sealing material 261 Locking piece 262 ... Connection piece 271 ... Connection piece 272 ... Fixed piece 411 ... Interior surface part 412 ... Connection surface part 413 ... Fixed surface part 414 ... Lower surface part 421 ... Projected surface part 421B ... Projected surface part 422 ... Projected surface part 422B 1st viewing surface portion 423B 2nd viewing surface portion 431 Estimated surface portion 432 Estimated surface portion 441 Estimated surface portion 442 Estimated surface portion 511 Estimated surface portion 512 Estimated surface portion 513 Receiving surface portion S1 Gap, S2...Gap.

Claims (4)

A fireproof refurbished window structure in which a new sash is arranged on the inner circumference of the existing frame,
Attaching a connecting member to the new frame of the new sash,
fixing the connecting member to the frame;
A closing material is installed between the existing frame and the new frame,
The closing member comprises an upper closing member, a lower closing member, and left and right vertical closing members ,
A refurbished window structure for fire protection, wherein gaps are formed between the left and right end surfaces of the upper closing member and the lower closing member and the inner peripheral surfaces of the left and right existing vertical frames of the existing frame. A fireproof refurbished window structure in which a new sash is arranged on the inner circumference of the existing frame,
Attaching a connecting member to the new frame of the new sash,
fixing the connecting member to the frame;
A closing material is installed between the existing frame and the new frame,
The closing member comprises an upper closing member, a lower closing member, and left and right vertical closing members,
A refurbished window structure for fire protection, wherein a gap is formed between upper and lower end surfaces of the left and right vertical blocking members and inner peripheral surfaces of the existing upper frame and the existing lower frame of the existing frame. A fireproof refurbished window structure in which a new sash is arranged on the inner circumference of the existing frame,
Attaching a connecting member to the new frame of the new sash,
fixing the connecting member to the frame;
A closing material is installed between the existing frame and the new frame,
The closing material is
An upper closing material, a lower closing material, left and right vertical closing materials,
A refurbished window structure for fireproofing, characterized by comprising a noncombustible material filled between the longitudinal end face of each closing member and the existing frame. In the fireproof refurbished window structure according to claim 1 or claim 2 ,
The fireproof refurbished window structure, wherein the upper closing member, the lower closing member, and the left and right vertical covering members are continuous on all four sides.

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