JP6717710B2 - Fireproof refurbished sash - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fireproof refurbished sash that improves fireproofness while installing a new frame without removing an existing frame of a fitting installed in a building opening and improving fireproofness.

Refurbished sashes for refurbishing existing sashes installed in building openings are known. (Patent Document 1)
In the refurbished sash of Patent Document 1, a new frame is arranged on the inner circumference of an existing frame, and a heat-expandable refractory material is arranged between the new frame and the existing frame, whereby a fire occurs. The heat-expandable refractory material that is sometimes expanded closes the space between the existing frame body and the new frame body to prevent communication between the inside and outside of the room.

JP-A-2015-94171

However, in the refurbished sash of Patent Document 1, the heat-expandable refractory material is simply arranged between the existing frame body and the new frame body, so that the heat-expandable fire resistant material is the existing frame body. And the new frame cannot be fully filled with a gap, and it takes time for the thermally expandable refractory material to fill between the existing frame and the new frame. There was a possibility of this.

The present invention has been made in view of the above circumstances, and by devising a region to be filled with a thermal expansion refractory material that expands at the time of a fire, an existing frame body and a new frame body with less thermal expansion refractory material It is an object of the present invention to provide a fireproof refurbished sash that can efficiently block spaces and quickly and reliably prevent indoor/outdoor communication.

The invention according to claim 1 of the present application includes a new frame fixed to an existing frame installed in a building opening, and a heat expansion material that expands by heating, and the existing frame is an indoor side. And an indoor side wall and an outdoor side wall that project to the inner peripheral side on the outdoor side, the new frame has a surface that faces the indoor side wall and the outdoor side wall of the existing frame body, respectively, on the outer peripheral side, and the thermal expansion material is expected direction are arranged on the opposite faces of the new frame so as to close the gap between the interior side end portion and the outdoor-side end portion Oite existing frame near the new frame, the heating expansion material In the vicinity of the indoor side end portion and/or in the vicinity of the outdoor side end portion, the facing surface and the indoor side wall and/or the outdoor side wall of the existing frame body are close to each other, and the adjacent existing frame body and the new frame body The space between them is characterized by being a space that can be closed at the initial stage of expansion of the heat-expandable material.
Further, the invention according to claim 2 of the present application, a discard frame fixed to the existing frame body installed in the building opening, a new frame body fixed to the existing frame body through the discard frame, The discard frame has a wide and substantially flat prospective surface portion in the indoor and outdoor directions, and the new frame body has a surface parallel to the prospective surface portion of the discard frame. The heat-expandable material is formed on the parallel surface of the new frame body so as to close the gap between the existing frame body and the new frame body at either the indoor side end portion in the prospective direction or the outdoor side end portion. disposed in the other of the indoor-side end portion and the outdoor-side end portion, is arranged closer to the parallel plane of the new frame so as to close the gap between the discarded frame and new frame, The existing frame body and the new frame body or the new frame body and the discard frame are close to each other near the indoor side end portion and/or the outdoor side end portion where the heat-expandable material is arranged, and the adjacent existing frame body and the new frame The gap between the frame body or the new frame body and the discard frame is characterized in that it can be closed at the initial stage of expansion of the heat-expandable material.
Further, the invention according to claim 3 of the present application is a waste frame fixed to an existing frame body installed in a building opening, and a new frame body fixed to the existing frame body via the waste frame, The discard frame has a wide and substantially flat prospective surface portion in the indoor and outdoor directions, and the new frame body has a surface parallel to the prospective surface portion of the discard frame. The heat-expandable material is disposed on the parallel surfaces of the new frame body so as to close the gap between the discard frame and the new frame body near the indoor side end and the outdoor side end in the prospective direction. At the same time, the new frame and the discard frame are close to each other in the vicinity of the indoor end and/or the outdoor end where the heat expansion material is arranged, and the gap between the adjacent new frame and the discard frame is The heat-expandable material is characterized in that the interval is such that it can be closed in the initial stage of expansion.

According to the present invention, it is possible to efficiently block the space between the existing frame body and the new frame body, and to quickly prevent communication between the interior and exterior.

It is a longitudinal cross-sectional view of a fire protection retrofit sash according to an embodiment of the present invention. It is a cross-sectional view of a fire protection retrofit sash according to an embodiment of the present invention. It is a figure for demonstrating the fire prevention function of the fire prevention refurbishment sash which concerns on embodiment of this invention, (a) is a longitudinal cross-sectional view of an upper frame part at the time of normal, (b) is an upper frame part at the time of fire. FIG. It is a figure for demonstrating the fire prevention function of the fire prevention remodeling sash which concerns on embodiment of this invention, (a) is a longitudinal cross-sectional view of a lower frame part at the time of normal, (b) is a lower frame part at the time of fire. FIG. It is a figure for demonstrating the fire prevention function of the fire prevention refurbishment sash which concerns on embodiment of this invention, (a) is a cross-sectional view of a vertical frame part at the time of normal, (b) is a vertical frame part at the time of fire. FIG. It is a figure for explaining the arrangement of the discard frame and the heat expansion material of the fireproof refurbished sash according to the embodiment of the present invention, when the fire protection refurbished sash is viewed from the indoor side, the arrangement state of the discard frame and the heat expansion material. FIG. It is a figure for demonstrating arrangement|positioning of the discard frame of the fire protection remodeling sash and the heat expansion material which concern on embodiment of this invention, and is a longitudinal cross-sectional view of the state which omitted the new installation frame. It is a figure for demonstrating arrangement|positioning of the discard frame of the fire protection refurbishment sash and the heat expansion material which concern on embodiment of this invention, and is a cross-sectional view of the state which omitted the new installation frame. It is a figure for demonstrating the fire prevention function of the fire prevention refurbishment sash which concerns on embodiment of this invention, (a) is a longitudinal cross-sectional view of the upper frame part which does not have a discard frame at the time of normal, (b) is a fire It is a longitudinal cross-sectional view of the upper frame portion where there is no discard frame at the time. It is a figure for demonstrating the fire prevention function of the fire prevention refurbishment sash which concerns on embodiment of this invention, (a) is a longitudinal cross-sectional view of the lower frame part which does not have a discard frame at the time of normal, (b) is a fire It is a longitudinal cross-sectional view of the lower frame part where there is no discard frame at the time. It is a figure for demonstrating the fire prevention function of the fire prevention refurbishment sash which concerns on embodiment of this invention, (a) is a cross-sectional view of the vertical-frame part which does not have a discard frame at the time of normal, (b) is a fire It is a cross-sectional view of a vertical frame portion where there is no discard frame at the time. It is a figure for demonstrating the fire prevention function of the fire prevention refurbishment sash which concerns on other embodiment of this invention, (a) is a cross-sectional view of a vertical frame part at the time of normal, (b) is vertical at the time of a fire. It is a cross-sectional view of a frame portion. It is a figure for demonstrating the fire prevention function of the fire prevention refurbishment sash which concerns on other embodiment of this invention, (a) is a horizontal cross-sectional view of the vertical frame part which does not have a discard frame at the time of normal, (b) [Fig. 4] is a cross-sectional view of a vertical frame portion where there is no discard frame at the time of fire. It is a figure for demonstrating the fire prevention function of the fire prevention refurbishment sash which concerns on other embodiment of this invention, (a) and (b) are both longitudinal cross-sectional views of an upper frame part at the time of normal. It is a figure for demonstrating the fire prevention function of the fire prevention refurbishment sash which concerns on other embodiment of this invention, (a) and (b) are both longitudinal cross-sectional views of a lower frame part at the time of normal.

A fireproof retrofit sash according to an embodiment of the present invention will be described with reference to the drawings.
(Overall structure)
As shown in FIGS. 1 and 2, a fireproof refurbished sash according to an embodiment of the present invention has a discard frame 2 fixed to the inner periphery of an existing frame body 1 installed in a building opening, and a waste frame 2 is interposed therebetween. The new frame 3 is attached, and the remodeled sash can be installed with almost no processing on the existing frame 1.

(Existing frame)
The existing frame 1 to be remodeled by the fire protection remodeling sash according to the present embodiment is formed by assembling an existing upper frame 11, an existing lower frame 12, an existing left vertical frame 13 and an existing right vertical frame 14 in four circles. Also, the existing lower frame 12 is provided with upper guide rails 11e and 11f and lower guide rails 12e and 12f that guide the inner shoji and the outer shoji (not shown) so as to be able to pull each other.

As shown in FIG. 1, the existing upper frame 11 of the existing frame body 1 is connected to the existing upper frame body 11a forming the inner peripheral surface of the building opening, and the indoor side end and the outdoor side end of the existing upper frame body 11a. The indoor side wall 11b and the outdoor side wall 11c that are provided, the jaw 11d that extends from the indoor side surface of the indoor side wall 11b to the indoor side, and the upper guide rails 11e and 11f that hang down from the inner peripheral surface of the existing upper frame body 11a. It has and.
Further, the existing lower frame 12 of the existing frame body 1 includes an existing lower frame body 12a forming an inner peripheral surface of a building opening, an indoor side wall 12b erected from an indoor end of the existing lower frame body 12a, and an indoor side wall. A jaw portion 12c extending from the upper end of 12b to the indoor side is provided. Further, the upper surface of the existing lower frame main body 12a is formed as a draining portion that is inclined downward toward the outdoor side, and a front wall portion 12d is hung downward from the outdoor end of the existing lower frame main body 12a. Lower guide rails 12e and 12f are provided on the inner peripheral surface (upper surface) of the existing lower frame body 12a so as to guide an unillustrated inner shoji and outer shoji in a freely pulling manner.

As shown in FIG. 2, the existing left vertical frame 13 of the existing frame 1 is connected to the existing left vertical frame main body 13a that forms the inner peripheral surface of the building opening and the inside of the existing left vertical frame main body 13a. The indoor side wall 13b, the jaw 13c extending further toward the indoor side from the indoor side wall 13b, and the outdoor side wall 13d connected to the outdoor side of the existing left vertical frame body 13a. Since the configuration of the existing right vertical frame 14 is the same as the configuration of the existing left vertical frame 13, the description thereof will be omitted.

(Discarded frame)
As shown in FIG. 1, the upper discard frame 21 arranged on the inner peripheral surface of the existing upper frame 11 includes the prospective surface portion 21a disposed on the inner peripheral side of the existing upper frame 11 and the inside and outside of the prospective surface portion 21a. Is formed as an elongated member having a length equal to or smaller than the width of the building opening in the left-right direction, which includes the indoor-side locking wall portion 21b and the outdoor-side locking wall portion 21c extending in the outer peripheral direction (upward). There is.
Then, the upper surface of the prospective surface portion 21a of the upper discarding frame 21 is brought into contact with the lower ends of the indoor side wall 11b and the outdoor side wall 11c of the existing upper frame 11 and the lower ends of the upper guide rails 11e and 11f from the inner peripheral side, and the indoor side. The locking wall portion 21b and the outdoor locking wall portion 21c are inserted from below into a recess formed by the indoor side wall 11b and the outdoor lateral wall 11c of the existing upper frame 11 to form the indoor locking wall portion 21b and the outdoor locking member 21b. The upper discarding frame 21 is attached to the existing upper frame 11 by fixing the stop wall portion 21c, the indoor side wall 11b, and the outdoor side wall 11c with fixing means b, b such as screws.

The lower discard frame 22 arranged on the inner peripheral side of the existing lower frame 12 is equal to or smaller than a plurality of support members 221 supported by the lower guide rails 12e of the existing lower frame 12 and the width of the building opening in the left-right direction. And a mounting surface member 222 arranged on a plurality of support members 221.

The left vertical discard frame 23 arranged on the inner peripheral surface of the existing left vertical frame 13 is, as shown in FIG. 2, the prospective surface portion 23a disposed on the inner peripheral side of the existing left vertical frame 13 and the interior side of the prospective surface portion 23a. And an indoor locking wall portion 23b and an outdoor locking wall portion 23c extending from the outdoor side to the outer peripheral direction, and is formed as a long member having a length equal to or smaller than the vertical width of the building opening. There is.
In the left vertical discard frame 23, the indoor side locking wall 23b and the outdoor side locking wall 23c are arranged so that the prospective surface portion 23a is arranged on the inner peripheral side, and the indoor side wall 13b and the outdoor side wall of the existing left vertical frame 13 are disposed. 13d is inserted from the inner peripheral side into the recess formed by 13d, and the indoor side locking wall 23b and the outdoor side locking wall 23c and the indoor side wall 13b and the outdoor side wall 13d are fixed by fixing means b, b such as screws. By doing so, it is attached to the existing left vertical frame 13.
The configuration of the vertical discard frame basically does not differ between left and right, and the description of the right vertical discard frame 24 is omitted.

(New frame)
The new upper frame 31 that constitutes the new frame 3 is arranged on the inner peripheral side of the upper discarding frame 21, and as shown in FIG. 1, the new upper frame main body 31a that forms the inner peripheral surface of the repair sash, and the new upper frame. An indoor side wall 31b that is connected to the indoor side end of the main body 31a and hangs down, a bent wall 31c formed by bending the upper end of the indoor side wall 31b toward the indoor side, and a substantially center in the prospective direction of the new upper frame main body 31a. The center hanging wall 31d is provided so as to extend downward from the position, and the outer guide rail 31e and screen door rail 31f are provided so as to extend downward from the outdoor side of the new upper frame body 31a. The upper surface has a plurality of protrusions 31g and 31h extending in the longitudinal direction of the new upper frame 31.
The new upper frame 31 is arranged via the spacer 91 with respect to the prospective surface portion 21a of the upper discarding frame 21, and the upper discarding frame in the state where the protruding portions 31g and 31h are in contact with the lower surface of the spacer 91. The spacer 21 and the spacer 91 are fixed together by a fixing means b such as a screw.

The indoor side end of the bending wall 31c of the new upper frame 31 is disposed substantially flush with the indoor side surface of the indoor side wall 11b of the existing upper frame 11 in the prospective direction, and the lower side of the bending wall 31c and the indoor side end and the existing upper frame are arranged. The airtight tape 81 covers the indoor side surface of the indoor side wall 11b of the air conditioner 11.
In addition, the outdoor side of the new upper frame body 31a of the new upper frame 31 projects more toward the outdoor side than the outdoor side surface of the outdoor side wall 11c of the existing upper frame 11, and on the outdoor side upper surface of the new upper frame body 31a. A fin-shaped member 71 made of a flame-retardant material is attached. As the flame-retardant material used for the fin-shaped member, for example, composite fireproof PVC, flame-retardant silicone, chloroprene rubber or the like is used. The fin-shaped member 71 includes a fixed portion 71a fixed to the new upper frame body 31a and a fin piece 71b protruding from the fixed portion 71a. The fin piece 71b comes into contact with the outdoor side surface of the existing upper frame 11 from the outside. It prevents the intrusion of rainwater.

As shown in FIG. 1, the new lower frame 32 that constitutes the new frame body 3 is formed in a staircase shape having a lower outdoor side and a higher indoor side, and is arranged above the existing lower frame 12 so that the inner peripheral surface of the repair sash is A new lower frame body 32a to be formed, an indoor side wall 32b continuously provided to the indoor side end of the new lower frame body 32a, a front wall portion 32c hanging from the outdoor side of the new lower frame body 32a, and a new lower frame body An inner rail 32d and an outer rail 32e projecting upward from the upper surface of 32a, a screen door lower rail 32f projecting from the outdoor side surface of the front wall portion 32c, and an outdoor side from the upper step of the newly formed lower frame body 32a And an airtight material holding wall 32g protruding toward.
When the new lower frame 32 is constructed, the lower guide rails 12f of the existing lower frame 12 are cut off, and the new lower frame 32 is placed on the upper surface of the existing lower frame 12 where the outdoor side is cut off from the lower guide rails 12f. At the same time, the indoor side is supported by the upper surface of the lower discard frame 22, so that it is arranged and constructed at the inner circumference (upper) position of the existing lower frame 12. The inner side wall 32b of the newly constructed lower frame 32 and the inner side wall 12b of the existing lower frame 12 face each other with a narrow gap therebetween, and are airtight from the inner side wall 32b of the new lower frame 32 to the upper surface of the jaw 12c. It is covered with tape 82.
Further, a jaw member 42 made of aluminum alloy is fixed to the building opening by a fixing means b such as a screw on the upper surface of the jaw 12c of the existing lower frame 12 so as to cover the airtight tape 82.

The new left vertical frame 33 that constitutes the new frame 3 is arranged on the inner peripheral side of the left vertical discard frame 23 on the left side, and as shown in FIG. 2, the new left vertical frame body 33a that forms the inner peripheral surface of the repair sash. An indoor side wall 33b extending inward from the indoor side of the new left vertical frame main body 33a; an indoor side prospective wall 33c extending further indoors from the indoor side wall 33b; and a new left vertical frame main body 33a. An outdoor side wall 33d extending from the outdoor side end in the inner circumferential direction, and a central wall 33e extending in the inner circumferential direction from a substantially central position in the prospective direction of the inner circumferential surface of the new left vertical frame body 33a. The outer peripheral surface of the new left vertical frame body 33a has a plurality of ridges 33f and 33g extending in the longitudinal direction of the new left vertical frame 33.
The new left vertical frame 33 is arranged on the prospective surface portion 23a of the left vertical discard frame 23 via the spacer 93, and the protruding portions 33f and 33g are in contact with the inner peripheral surface of the spacer 93. With the spacer 93, the left vertical discard frame 23 is fastened and fixed together with a fixing means b such as a screw.

The indoor side end wall of the indoor side prospective wall 33c of the new left vertical frame 33 is arranged substantially flush with the indoor side face of the indoor side wall 13b of the existing left vertical frame 13 in the prospective direction. The inner end surface and the indoor side surface of the indoor side wall 13b of the existing left vertical frame 13 are covered with the airtight tape 83.
Further, the outdoor side of the new left vertical frame body 33a of the new left vertical frame 33 projects more outward than the outdoor side surface of the outdoor side wall 13d of the existing left vertical frame 13, and the outdoor side end of the new left vertical frame body 33a. A fin-like member 73 made of a flame-retardant material is attached to the outer peripheral surface of the portion. The fin-shaped member 73 includes a fixed portion 73a fixed to the new left vertical frame 33 and a fin piece 73b protruding from the fixed portion 73a. The fin piece 73b is brought into contact with the outdoor side surface of the existing left vertical frame 13 to externally Prevents rainwater from entering.
The configurations of the left and right new vertical frames 33 and 34 are basically the same as each other, and the description of the new right vertical frame 34 is omitted.

(Fireproof structure)
The fireproof refurbished sash according to the present embodiment of the present invention includes a fireproof structure for preventing smoke or flame from entering through a gap between the existing frame 1 and the new frame 3 during a fire.
The fireproof structure of the fireproof refurbished sash according to the present embodiment will be described below with reference to FIGS. 3 to 5.

(Fire protection structure of the upper frame where there is a discard frame)
In the upper frame portion, as shown in FIG. 3( a ), the new upper frame 31 is attached to the existing upper frame 11 via the upper discard frame 21, and between the existing upper frame 11 and the new frame body 3. The gap formed is determined by the upper discard frame 21 arranged on the inner peripheral surface of the existing upper frame 11, and the upper gap s11 above the upper discard frame 21 and the lower gap s12 below the upper discard frame 21 in the region where the upper discard frame 21 exists. It is divided into
When disposing the upper discard frame 21, the upper surface of the prospective surface portion 21a of the upper discard frame 21 is in contact with the lower ends of the indoor side wall 11b and the outdoor side wall 11c of the existing upper frame 11, so that There is little risk that a gap communicating with the inside and outside of the room will be created in the upper gap s11 with the discard frame 21. Therefore, the heat-expandable material is arranged so as to close the lower gap s12 between the upper discard frame 21 and the new upper frame 31, and in the vicinity of the indoor side end portion of the lower gap s12, the new upper frame 31 is provided. The heat-expandable material 51 is arranged on the upper surface of the bent wall 31c, and in the vicinity of the outdoor end portion of the same chamber, the heat-expandable material 51 protrudes more outward than the existing upper frame 11 (upper frame 21) of the new upper frame body 31a of the new upper frame 31. The heat-expandable material 52 is arranged on the upper surface of the portion, and both are arranged over the entire length of the new upper frame 31.

The bending wall 31c of the new upper frame 31 on which the indoor heat-expandable material 51 is arranged faces the upper discard frame 21, and the bending wall 31c is formed at a position higher than the new upper frame body 31a. Therefore, the upper surface of the bending wall 31c is close to the lower surface of the prospective surface portion 21a of the upper discarding frame 21, and the lower gap s12 is provided between the upper surface of the bending wall 31c of the new upper frame 31 and the prospective surface portion 21a of the upper discarding frame 21. A gap s13 is formed as a space that is narrower in the vertical direction than the other portions.
The heat-expandable material 52, which is arranged on the upper surface of the portion of the new upper frame body 31a that projects to the outside of the room, is arranged near the fixing portion 71a of the fin-shaped member 71 fixed to the new upper frame 31 and is heated. By disposing the fin piece 71b of the fin-shaped member 71 above the expandable material 52, the outside of the room is located above the heated expandable material 52 by the new upper frame 31, the existing upper frame 11, and the fin-shaped member 71. A narrow space s14 is formed on the indoor side.

Then, when a fire occurs, as shown in FIG. 3B, the heat-expandable material 51 arranged on the indoor side is formed in a relatively narrow vertical space formed above the bending wall 31c by heating. It expands toward a certain gap s13 and can reach the prospective surface portion 21a of the upper discard frame 21 at the initial stage of expansion, and the gap s13 between the upper discard frame 21 and the new upper frame 31 near the indoor side end in the prospective direction. Can be quickly blocked.
Here, the initial stage of expansion means an early stage after the heat-expandable material is heated and starts to expand. For example, the heat-expandable material expands to a volume of about ⅓ or less of the volume when completely expanded. It means until you do.
Further, the heat-expandable material 52 arranged on the outdoor side expands toward the fin-shaped member 71 arranged above by heating, but the heat-expandable material 52 expands in the fin-shaped member 71 made of a flame-retardant material. Since the shape does not burn out during the period and the heat-expandable material 52 can be prevented from scattering, the heat-expandable material 52 is formed by the existing upper frame 11, the new upper frame 31, and the fin-shaped member 71. It is possible to densely expand into the gap s14, and to quickly close the gap between the upper discarding frame 21 and the new upper frame 31 near the outdoor side end in the prospective direction.
In addition, on the outdoor side, a new upper frame body 31a of the new upper frame 31 is bulged upward to form a ridge close to the prospective surface portion 21a of the upper discard frame 21, and the heat expansion material is arranged on the upper surface of the ridge. By doing so, the gap between the upper discarding frame 21 and the new upper frame 31 may be closed at the initial stage of expansion of the heat-expandable material.

As described above, as in the case of the upper frame portion of the fireproof refurbished sash of the present embodiment, when the discard frame is arranged over the inside and outside of the existing frame body, the heat-expandable material is the indoor side end in the prospective direction. By arranging so as to close the gap between the discard frame and the new frame in the vicinity of the outdoor part and the gap between the discard frame and the new frame in the vicinity of the outdoor end, Communication can be prevented.

(Fireproof structure of the lower frame part where the discard frame exists)
In the lower frame portion, as shown in FIG. 4A, the lower discard frame 22 is arranged only on the indoor side portion of the existing lower frame 12, and the new lower frame 32 is supported by the lower discard frame 22. In the vicinity of the indoor side end portion, the thermal expansion material 53 is arranged on the indoor side surface of the indoor side wall 32b of the new lower frame 32 facing the lower discard frame 22, and the new lower frame 32 is arranged on the upper surface of the existing lower frame 12. In the vicinity of the outdoor side end portion, the heat expansion material 54 is disposed on the indoor side surface of the front wall portion 32c of the new lower frame 32 that faces the front wall portion 12d of the existing lower frame 12, and both of them extend over the entire length of the new lower frame 32. It is arranged over.

The indoor side wall 32b on which the indoor-side heat-expandable material 53 is arranged faces the mounting surface member 222 of the lower discard frame 22 in a state of being close to each other, and the indoor side wall 32b of the new lower frame 32 and the lower discard frame. The gap s21 formed by the mounting surface member 222 of 22 is formed as a narrow space in the prospective direction.
Further, the front wall portion 32c of the new lower frame 32 on which the outdoor thermal expansion material 54 is arranged faces the front wall portion 12d of the existing lower frame 12 in a state of being close to the front wall portion 32c. The gap s22 formed by the portion 32c and the front wall portion 12d of the existing lower frame 12 is formed as a narrow space in the prospective direction.

When a fire occurs, as shown in FIG. 4B, the heat-expandable material 53 arranged on the indoor side expands toward the mounting surface member 222 of the lower discard frame 22 and expands. In the initial stage, the mounting surface member 222 disposed on the indoor side of the indoor side wall 12b of the existing lower frame 12 can be reached to fill the space s21, which is a narrow space. The airtight tape 82 that covers the gap s21 is formed of a flame-retardant material, so that the expanded heat generated in the gap s21 formed between the inner side wall 32b of the new lower frame 32 and the inner side wall 12b of the existing lower frame 12 is increased. It is possible to prevent the expansive material 53 from scattering and leaking to the indoor side, and the expansion material 53 is densely expanded to the indoor side gap s21 of the gap s2 between the existing lower frame 12 and the new lower frame 32, and more reliably closed. can do.
Further, the heat-expandable material 54 arranged on the outdoor side expands toward the front wall portion 12d of the existing lower frame 12 due to heating, reaches the front wall portion 12d of the existing lower frame 12 in the initial stage of expansion, and the new lower frame 32 Since the space s22, which is a narrow space formed by the front wall portion 32c of the existing lower frame 12 and the front wall portion 12d of the existing lower frame 12, is filled, the outdoor side of the gap s2 between the new lower frame 32 and the existing lower frame 12 can be quickly set. It can be surely closed.

As described above, as in the case of the lower frame portion of the fireproof remodeling sash of the present embodiment, when the discarding frame is partially disposed on the indoor side or the outdoor side with respect to the existing frame body, the heat-expandable material has the expected direction. The gap between the discard frame and the new frame near the end on the side where the discard frame is placed, and the gap between the existing frame and the new frame near the end on the side where the discard frame is not placed. By arranging so as to be closed, it is possible to prevent the fireproof retrofit sash from communicating with the inside and outside of the room.

(Fireproof structure of the vertical frame where there is a discard frame)
In the vertical frame portion, as shown in FIG. 5A, the left vertical discard frame 23 is arranged on the inner peripheral surface of the existing left vertical frame 13, and the new left vertical frame 33 includes the existing left vertical frame 13 and the left vertical frame. It is arranged close to the discard frame 23, and the gap formed between the existing left vertical frame 13 and the new left vertical frame 33 is the left vertical discard frame 23 in the region where the left vertical discard frame 23 exists. Is divided into an outer gap s31 on the outer peripheral side and an inner gap s32 on the inner peripheral side.
When disposing the left vertical discard frame 23, unlike the disposition of the upper discard frame 21, the outer peripheral surface of the prospective surface portion 23a abuts on the inner peripheral edges of the indoor side wall 13b and the outdoor side wall 13d of the existing left vertical frame 13. Since it does not exist, not only the inner space s32 between the left vertical discard frame 23 and the new left vertical frame 33 but also the outer space s31 between the existing left vertical frame 13 and the left vertical discard frame 23 is indoors and outdoors. There is a possibility that a communication gap will occur.
Therefore, in the vicinity of the indoor side end of the vertical frame portion, on the outer peripheral surface of the indoor side prospective wall 33c of the new left vertical frame 33 so as to face the portion where the left vertical discard frame 23 and the existing left vertical frame 13 abut. The heat-expandable material 55 is arranged over the entire length of the new left vertical frame 33, and the airtight tape 83 extends from the inner peripheral side surface of the indoor expected wall 33c of the new left vertical frame 33 to the indoor side surface of the existing left vertical frame 13. Is provided.

In addition, in the vicinity of the outdoor end portion of the same room, a thermal expansion material is provided on the outer peripheral surface of the portion of the new left vertical frame body 33a of the new left vertical frame body 33a which projects more outward than the existing left vertical frame 13 (left vertical discard frame 23). 56 are arranged, and are arranged over the entire length of the new left vertical frame 33.
The heat expansion material 56 arranged on the outdoor side of the new left vertical frame main body 33a is arranged in the vicinity of the fixing portion 73a of the fin-shaped member 73, and the fin piece 73b of the fin-shaped member 73 is arranged on the outer periphery of the heat expansion material 56. By arranging, the space s34 having a small outdoor side and a wide indoor side is formed at the outer peripheral position of the heat expansion material 56 by the new left vertical frame 33, the existing left vertical frame 13, and the fin-shaped member 73.

Then, in the event of a fire, as shown in FIG. 5B, the heat-expandable material 55 arranged on the indoor side is heated by heating the indoor side wall 13b of the existing left vertical frame 13 and the chamber of the left vertical discard frame 23. It expands toward the contact part with the inner locking wall portion 23b, reaches the existing left vertical frame 13 and the left vertical discard frame 23 in the initial stage of expansion, and in the vertical frame part, the left vertical discard frame 23 and the new left vertical frame. Not only on the indoor side of the gap with 33, but also with the existing left vertical frame 13 and the new left vertical frame 33, and with the existing left vertical frame 13 and the left vertical discard frame 23. You can
At this time, the airtight tape 83 provided from the inner peripheral side surface of the indoor expected wall 33c of the new left vertical frame 33 to the indoor side surface of the existing left vertical frame 13 is formed of a flame-retardant material, so that the expanded heating is achieved. It is possible to suppress the expansive material 55 from scattering to the indoor side, densely fill the indoor side of the vertical frame portion, and further reliably prevent communication between the indoor and outdoor in both the outer gap s31 and the inner gap s32. You can

Further, the heat-expandable material 56 arranged on the outdoor side expands toward the fin-shaped member 73 arranged on the outer periphery by heating, but the heat-expandable material 56 expands in the fin-shaped member 73 made of a flame-retardant material. Since the shape of the heat-expandable material 56 can be prevented from scattering without being burnt out, the heat-expandable material 56 is formed by the existing left vertical frame 13, the new left vertical frame 33, and the fin-shaped member 73. To the space s34 that is close to the outdoor side end in the prospective direction, and to the left vertical vertical frame 33 and the left vertical discard frame 23 and the existing left vertical frame 13 in contact with each other. Not only the outside of the inner gap 32 between the discard frame 23 and the new left vertical frame 33 but also the outside of the outside gap s32 between the existing left vertical frame 13 and the left vertical discard frame 23 can be closed.
Note that, on the outdoor side, it faces the contact portion between the outdoor side wall 13c of the existing left vertical frame 13 of the new left vertical frame body 33a of the new left vertical frame 33 and the outdoor side locking wall portion 23c of the left vertical discard frame 23. By arranging the heat expansion material at a place, the gap between the left vertical discard frame 23 and the new left vertical frame 33, the existing left vertical frame 13 and the new left vertical frame 33 also at the initial stage of expansion of the heat expansion material on the outdoor side. It may be configured to close the gap between the existing left vertical frame 13 and the left vertical discard frame 23.

As described above, as in the vertical frame portion of the fire protection remodeling sash of the present embodiment, when the discard frame is arranged over the interior and exterior of the existing frame body, the space between the existing frame body and the discard frame is sufficient. If the air-tightness cannot be maintained, the heat-expandable material should be installed in the new frame in the vicinity of the indoor side end and the outdoor side end in the prospective direction. By arranging the sash so that it expands toward the abutting part, it is possible to close the gap between the new frame, the discard frame, and the existing frame, and prevent the fireproof refurbished sash from communicating indoors and outdoors. be able to.

(The part where there is no discarding frame)
As shown in the above embodiment, for the fire protection remodeling sash in which the new frame 3 is installed to the existing frame 1 via the discard frame 2, the existing frame 1, the discard frame 2, and the new frame 3 are An effective fire protection structure can be provided by providing a heat-expandable material that efficiently expands and fills the gap generated between the two.
Further, in the fire protection remodeling sash according to the present embodiment, since the discard frame is not arranged over the entire length in the left-right direction and the vertical direction of the fitting, there are four corners where the discard frame does not exist, but the discard Further fire protection structures are provided at the four corners where there is no frame. A description will be given below with reference to FIGS.

In the fire protection remodeling sash according to the present embodiment, the upper discarding frame 21, the lower discarding frame 22, and the left and right vertical discarding frames 23, 24 are not arranged over the entire length of the fitting in the left-right direction and the vertical direction. As shown in FIG. 6, there is a region where the discard frame 2 is not arranged at the corner.
Therefore, in the region where the waste frame 2 of the fireproof refurbished sash of the present embodiment is not disposed, the heat expansion materials 61 to 68 are disposed on both sides in the length direction of the waste frame 2 in addition to the above-described heat expansion materials 51 to 56. This suppresses the invasion of flames and smoke in the area.

(Fire protection structure of the upper frame part where there is no discard frame)
As shown in FIGS. 7 and 8, the heat-expandable materials 61 and 62 arranged on the left and right sides of the upper discarding frame 21 are disposed on the outdoor side surface of the indoor side wall 11b of the existing upper frame 11, and It is provided from both ends to both ends of the existing upper frame 11.
Therefore, as shown in FIG. 9A, in the region where the upper discard frame 21 of the upper frame portion does not exist, the above-mentioned chamber is formed in the gap s1 formed between the existing upper frame 11 and the new upper frame 31. A fire protection structure is formed by the inner thermal expansion material 51 and the outdoor thermal expansion material 52, and the thermal expansion materials 61 and 62 arranged on the outdoor side surface of the indoor side wall 11b of the existing upper frame 11.

Then, when a fire occurs, as shown in FIG. 9(b), the heat-expandable material 51 on the indoor side and the heat-expandable materials 61, 62 arranged on the outdoor side surface of the indoor side wall 11b of the existing upper frame 11. Are expanded and integrated, the heating expansion material 51, 61, 62 is sufficiently filled in the gap formed on the indoor side of the upper guide rail 11e of the existing upper frame 11, and the existing upper frame 11 and the new upper frame 11 are newly installed. The interior side of the gap s5 formed between the frame 31 and the frame 31 can be closed.
Further, as described above, the heat-expandable material 52 arranged on the outdoor side is densely expanded into the gap s14 formed by the existing upper frame 11, the new upper frame 31, and the fin-shaped member 71, and the existing upper frame 11 is expanded. The outdoor side of the gap s1 formed between the upper frame 31 and the new upper frame 31 can be closed.
In addition, in the said embodiment, although the heat expansion material 61,62 is arrange|positioned at the indoor side wall 11b of the existing upper frame 11, you may arrange|position at the indoor side surface of the outdoor side wall 11c of the existing upper frame 11.

(Fireproof structure of the lower frame part where there is no discard frame)
As shown in FIGS. 7 and 8, the heat-expandable materials 63 and 64 arranged on both left and right sides of the lower discard frame 22 are disposed on the outdoor side surface of the indoor side wall 12b of the existing lower frame 12, and It is provided from both end positions of the mounting surface member 222 to both end parts of the existing lower frame 12.
Therefore, as shown in FIG. 10A, in the region where the lower sacrificial frame 22 of the lower frame portion does not exist, the above-mentioned chamber is formed in the gap s2 formed between the existing lower frame 12 and the new lower frame 32. A fire protection structure is formed by the inner thermal expansion material 53 and the outdoor thermal expansion material 54, and the thermal expansion materials 63 and 64 arranged on the outdoor side surface of the indoor side wall 12b of the existing lower frame 12.

Then, when a fire occurs, as shown in FIG. 10B, the thermal expansion material 53 disposed on the indoor side of the indoor side wall 32b of the new lower frame 32 adjacent to the indoor side wall 12b of the existing lower frame 12. Reaches the indoor side wall 12b of the existing lower frame 12 in the initial stage of expansion, and expands densely in a gap s21 that is a narrow space between the existing lower frame 12 and the new lower frame 32, and By expanding and integrating the heat-expandable materials 63 and 64 arranged on the outdoor side surface of the side wall 12b, it is possible to prevent the heat-expandable material 53 that has expanded into the gap s21 from falling downward, and the existing lower frame. The indoor side of the gap s2 formed between 12 and the new lower frame 32 can be quickly closed.
Further, the thermal expansion material 54 disposed on the indoor side of the front wall portion 32c of the new lower frame 32 adjacent to the outdoor side surface of the front wall portion 12d of the existing lower frame 12 has the front wall portion of the existing lower frame 12 in the initial stage of expansion. Since it reaches 12d and expands densely in a gap s22 which is a narrow space between the new lower frame 32 and the existing lower frame 12, the outdoor side of the gap s2 between the new lower frame 32 and the existing lower frame 12 is quickly expanded. It can be surely closed.
In this way, regarding the lower frame part of the fire protection repair sash, the new lower frame is placed close to the existing lower frame near the indoor side end and the outdoor side end and the By forming a space between the lower frame and the existing lower frame in a narrow gap and arranging the thermal expansion material so as to close the indoor side portion and the outdoor side portion formed in the narrow gap, the indoor or outdoor It is possible to quickly respond to a fire on the side of, and it is possible to prevent indoor/outdoor communication with a small amount of heat-expanding material.

(Fireproof structure on the left vertical frame where there is no discard frame)
As shown in FIGS. 7 and 8, the heat-expandable materials 65 and 66 arranged on both the upper and lower sides of the left vertical discard frame 23 are disposed on the outdoor side surface of the indoor side wall 13b of the existing left vertical frame 13, and the left vertical discard is performed. It is provided from the upper and lower ends of the frame 23 to both ends of the existing left vertical frame 13.
Therefore, as shown in FIG. 11A, in the region where the left vertical discard frame 23 of the vertical frame portion does not exist, the gap s3 formed between the existing left vertical frame 13 and the new left vertical frame 33 has A fireproof structure is formed by the indoor-side heat-expandable material 55 and the outdoor-side heat-expandable material 56 and the heat-expandable materials 65 and 66 arranged on the outdoor-side surface of the indoor side wall 13b of the existing left vertical frame 13. ..

When a fire occurs, the indoor heat-expandable material 55 expands toward the outer periphery and is placed on the outdoor side surface of the indoor side wall 13b of the existing left vertical frame 13 as shown in FIG. 11(b). The heat-expandable materials 65 and 66 that are expanded expand toward the outdoor side and are integrated with each other, thereby closing the indoor side of the gap s3 formed between the existing left vertical frame 13 and the new left vertical frame 33. can do.
Further, the heat-expandable material 56 arranged on the outdoor side is densely expanded into the space s34 formed by the existing left vertical frame 13, the new left vertical frame 33, and the fin-shaped member 73, as described above, and the existing left The outdoor side of the gap s3 formed between the vertical frame 13 and the new left vertical frame 33 can be closed.
In addition, in the said embodiment, although the heat expansion material 65,66 is arrange|positioned at the indoor side wall 13b of the existing left vertical frame 13, it may be arrange|positioned at the indoor side surface of the outdoor side wall 13d of the existing left vertical frame 13. Alternatively, they may be arranged on the existing left vertical frame body 13a.

In this way, even in the region of the vertical frame portion of the fire protection repair sash according to the present embodiment where the waste frame is not present, the indoor side portion and the outdoor side portion of the gap between the existing frame body and the new frame body are closed. Since the heat-expandable material is disposed in the room, it is possible to quickly respond to a fire on either side of the room, and it is possible to prevent communication between the inside and the outside with a small amount of the heat-expandable material.

(Other Embodiment 1)
Another embodiment of the present invention will be described with reference to FIGS.
For example, as shown in FIG. 12( a ), in the case of a fireproof retrofit sash including the existing vertical frames 13 and 14 having a wide width in the prospective direction, the interior side projection of the new left vertical frame 33 adjacent to the existing vertical frame 13 is expected. The indoor-side heat-expandable material 55 provided on the outer peripheral surface of the wall 33c faces the inner peripheral surface of the left vertical discard frame 23, and is left vertically discarded from the inner peripheral side surface of the indoor expected wall 33c of the new left vertical frame 33. By providing the airtight tape 83 over the outer peripheral surface of the frame 23 and the indoor side surface of the existing left vertical frame 13, a fireproof structure on the indoor side can be formed.
Then, when a fire occurs, as shown in FIG. 12( b ), the left-side vertical discard frame 23 and the new left-side vertical frame 33 are compared by expanding the indoor heat-expandable material 55 toward the outer periphery. It is possible to fill the narrow gap s33 and close the inner gap s32 on the indoor side in the vertical frame portion to quickly prevent communication between the inside and the outside.

In addition, in the regions at both ends where the left vertical discard frame 23 does not exist, as in the previous embodiment, as shown in FIG. 13A, in addition to the indoor thermal expansion material 55, the existing left vertical frame 13 is provided. Heat-expandable materials 65 and 66 are disposed on the outdoor side surface of the indoor side wall 13b.
Then, when a fire occurs, as shown in FIG. 13B, the heat-expandable material 55 provided on the outer peripheral surface of the indoor-side prospective wall 33c of the new left vertical frame 33 expands toward the outer peripheral side. The heat expansion materials 65 and 66 provided on the outdoor side surface of the indoor side wall 13b of the existing left vertical frame 13 expand toward the outdoor side, and both are integrated, so that the new left vertical frame 33 and the existing left vertical frame 33 are integrated. The indoor side of the gap s3 between the frames 13 can be closed.

The airtight tape 83 provided between the new left vertical frame 33 and the existing left vertical frame 13 is made of a flame-retardant material both in the region where the left vertical discard frame 23 exists and in the region where it does not exist. By forming the airtight tape 83, the airtight tape 83 suppresses the heat-expandable material from scattering toward the inside of the room, so that the space s3 in the vertical frame portion can be filled more closely inside the room.
Since the fireproof structure on the outdoor side is similar to that of the previous embodiment, the description thereof is omitted here.

(Other Embodiment 2)
In the fire protection structure of the upper frame portion, as shown in FIG. 14A, a pocket portion 31i for arranging the heat expansion material 51 may be provided on the upper surface of the bent wall 31c of the new upper frame 31. As shown in b), the heat expansion material 51 may be arranged by providing a pocket portion 31i for arranging the heat expansion material 51 on the indoor upper surface of the new upper frame body 31a of the new upper frame 31. By providing the pocket portion 31i, it is possible to prevent the thermal expansion material 51 from falling off.
Further, in the fire protection structure of the lower frame portion, as shown in FIG. 15A, the heat expansion material 54 on the outdoor side is not provided on the indoor side surface of the front wall portion 32c of the new lower frame 32, but the existing lower frame 12 is used. It may be arranged on the lower surface on the outdoor side of the new lower frame body 32a of the new lower frame 32 close to the.
The new frame 3 constructed by the fireproof refurbished sash of the present invention is not limited to one having a stepped lower frame, and for example, as shown in FIG. May be configured as a remodeled sash whose height is higher than the height of the inner rail on the indoor side. In such a case, it is preferable to use, as the lower sacrificial frame 22, a lower sacrificial frame 22 which is wide on the upper surface of the inner and outer rails in the prospective direction.

As described above, in the fireproof refurbished sash according to the present embodiment, between the existing frame and the new frame, or between the existing frame and the new frame in the vicinity of the indoor side end and the outdoor side end in the prospective direction. Since the heat-expandable material is arranged between the body and the body, the heat-expandable material arranged on the indoor side and the heat-expandable material arranged on the outdoor side are both outside portions in the prospective direction (the indoor side end and the outdoor side end). Section), when a fire occurs, it is possible for any of the heat-expandable materials to be heated and expanded in the early stages of the fire, regardless of whether the fire occurred indoors or outdoors. As a result, it is possible to close the gap between the existing frame and the new frame at an early stage of the fire, prevent the leakage of harmful gas caused by heating the resin spacers placed in the gap, and It is possible to prevent the ignition and the spread of fire.
Further, by disposing any of the heat-expandable materials in the new frame, the heat-expandable material can be expanded at an early stage by the heat transmitted to the new frame in which the flame is relatively likely to contact.
Further, by bringing the existing frame body and the new frame body or the waste frame and the new frame body close to each other, in the vicinity of the indoor side end portion where the heat expansion body of the new installation frame is arranged and/or the outdoor side end portion, Since the gap between the frame and the new frame or the discard frame and the new frame can be formed as a relatively narrow space and the gap can be closed at the initial stage of expansion of the heat-expandable material, quick closing can be performed. In addition, the amount of the heat-expandable material for filling the gap is small, and the filling can be efficiently performed.

The configuration for disposing the thermal expansion material between the new frame body and the existing frame body or between the new frame body and the discard frame is not limited to the configuration of the above-described embodiment. Even in the region where there is, a heat expansion material may be arranged between the existing frame body and the new frame body in the vicinity of the indoor side end portion and the outdoor side end portion, and in the embodiment, the lower frame portion The fireproof structure used in the above may be used for the upper frame and the vertical frame. That is, the thermal expansion material may be arranged between the new frame and the existing frame, or between the new frame and the discard frame in the vicinity of the indoor side end and the outdoor side end in the prospective direction.

1: existing frame 11: existing upper frame 11a: existing upper frame body 11b: indoor side wall 11c: outdoor side wall 11d: jaw 11e: upper guide rail 11f: upper guide rail 12: existing lower frame 12a: existing lower frame body 12b : Indoor side wall 12c: Jaw part 12d: Front wall part 12e: Lower guide rail 12f: Lower guide rail 13: Existing left vertical frame 13a: Existing left vertical frame body 13b: Indoor side wall 13c: Jaw part 13d: Outdoor side wall 14: Existing Right vertical frame 14b: Indoor side wall 2: Discarding frame 21: Upper discarding frame 21a: Expected surface portion 21b: Indoor side locking wall portion 21c: Outdoor side locking wall portion 22: Lower discarding frame 221: Support member 222: Mounting surface Member 23: Left vertical discard frame 23a: Prospect surface portion 23b: Indoor side locking wall portion 23c: Outdoor side locking wall portion 24: Vertical discard frame 3: New frame 31: New upper frame 31a: New upper frame body 31b: Indoor side wall 31c: Bent wall 31d: Central hanging wall 31e: Outer guide rail 31f: Screen door rail 31g: Ridge portion 31h: Ridge portion 31i: Pocket portion 32: New lower frame 32a: New lower frame body 32b: Indoor side wall 32c : Front wall part 32d: Inner rail 32e: Outer rail 32f: Screen door lower rail 32g: Airtight material retaining wall 33: New left vertical frame 33a: New left vertical frame body 33b: Indoor side wall 33c: Indoor side expected wall 33d: Outdoor side wall 33e: central wall 33f: ridge portion 33g: ridge portion 34: new vertical frame 42: jaw members 51 to 56: heat expansion materials 61 to 66: heat expansion materials 71, 73: fin-shaped members 81 to 83: airtight tape 91, 93: Spacers

Claims (3)

A new frame fixed to the existing frame installed in the building opening, and a heat expansion material that expands by heating,
The existing frame body has an indoor side wall and an outdoor side wall that project inward on the indoor side and the outdoor side,
The new frame has a surface on the outer peripheral side that faces the indoor side wall and the outdoor side wall of the existing frame, respectively.
Heating expansion material is disposed in the opposite faces of the new frame so as to close the gap between the expected direction of the indoor-side end portion and the outdoor-side end portion and Oite existing frame in the vicinity new frame Cage,
In the vicinity of the indoor side end portion where the thermal expansion material is arranged and/or in the vicinity of the outdoor side end portion, the facing surface and the indoor side wall and/or the outdoor side wall of the existing frame body are close to each other,
The fireproof refurbished sash, wherein the gap between the existing frame and the new frame adjacent to each other is a gap that can be closed in the initial stage of expansion of the heat-expandable material. A discard frame fixed to the existing frame body installed in the building opening, a new frame body fixed to the existing frame body through the discard frame, and a heat expansion material that expands by heating,
The discard frame has a wide and generally flat prospective surface portion in the indoor and outdoor directions,
The new frame has a surface parallel to the prospective surface part of the discard frame,
The heat-expandable material is placed on the parallel surface of the new frame body so as to close the gap between the existing frame body and the new frame body either near the indoor side end in the prospective direction or near the outdoor side end. It is arranged on the parallel surface of the new frame body so as to close the gap between the discard frame and the new frame body at the other end near the indoor side end and the outdoor side end part, and is also expanded by heating. In the vicinity of the indoor side end portion where the material is arranged and/or the outdoor side end portion, the existing frame body and the new frame body or the new frame body and the discard frame are close to each other,
A fireproof refurbished sash, characterized in that the gap between the existing existing frame and the new adjacent frame or between the new existing frame and the discarded frame is a gap that can be closed at the initial stage of expansion of the heat-expandable material. A discard frame fixed to the existing frame body installed in the building opening, a new frame body fixed to the existing frame body through the discard frame, and a heat expansion material that expands by heating,
The discard frame has a wide and generally flat prospective surface portion in the indoor and outdoor directions,
The new frame has a surface parallel to the prospective surface part of the discard frame,
The heat-expandable material is arranged on the parallel surfaces of the new frame body so as to close the gap between the discard frame and the new frame body in the vicinity of the indoor side end and the outdoor side end in the prospective direction, In the vicinity of the indoor side end portion where the heat expansion material is arranged and/or in the vicinity of the outdoor side end portion, the new frame body and the discard frame are close to each other
The fireproof retrofit sash, wherein the gap between the new frame and the discard frame adjacent to each other is a gap that can be closed in the initial stage of expansion of the heat-expandable material.

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