JP7486405B2 - Fittings - Google Patents

Description

The present invention relates to fittings that are placed in building openings.

Conventionally, fittings have been known that have a frame formed by assembling aluminum frames or other frame materials on all four sides and are placed in building openings.

JP 2015-48600 A

In the sash described in Patent Document 1, fire resistance is imparted by placing a heat-foaming material that expands when heated at appropriate locations on the screen, but there is still room for further improvement in fire resistance.

The purpose of the present invention is to improve the fire resistance of building materials, for example, those that have aluminum frames.

The fixture of the embodiment comprises an aluminium frame and a panel body held by the frame, the frame having a main body and a glass opening formed on the inner periphery of the main body, the main body having a hollow portion extending from the visible surface of the glass opening to the outer periphery, and a reinforcing material being arranged within the hollow portion, the reinforcing material having a visible piece and a visible piece that extend from the visible surface of the panel body held at the glass opening to the outer periphery side, and the fixture is fixed to the outer periphery side or the visible surface of the glass opening.
In addition, the fitting of the embodiment comprises an aluminum frame material and a panel body held by the frame material, the frame material having a main body portion and a glass opening formed on the inner periphery of the main body portion, the main body portion having a hollow portion extending from the visible surface of the glass opening to the outer periphery, and a reinforcing material is arranged within the hollow portion, and the reinforcing material has a visible piece and a projection piece that extend from the visible surface of the panel body held at the glass opening to the outer periphery side, and also has another visible piece extending further from the projection piece, and this is a fitting.

The fixture of this embodiment can improve the fire resistance of fixtures that have aluminum frame materials, for example.

FIG. 2 is an interior view of a fixture according to one embodiment. 1A is a vertical cross-sectional view of the entire building fixture, (b) is a partial vertical cross-sectional view of the upper frame portion, and (c) is a partial vertical cross-sectional view of the lower frame portion. FIG. FIG. 2 is a cross-sectional view of a fitting according to one embodiment. FIG. 2 is a cross-sectional view of a joint portion of a building fixture according to one embodiment. FIG. 1 is a diagram of a sash frame of an inner door of a building fixture according to one embodiment, where (a) is a cross-sectional view of the lower part of the sash frame, (b) is a view of the lower part of the sash frame from the outside of the room, (c) is a cross-sectional view of the sash frame, (d) is a view of the lower part of the sash frame from the outside of the room, (e) is a view of an airtight piece attached to the lower end of the sash frame from the outside of the room, and (f) is a view of the same airtight piece from the outer periphery. FIG. 1 is a diagram of a joint frame of an inner sash of a building fixture according to one embodiment, in which (a) is a cross-sectional view of the joint frame, and (b) is a view of the lower part of the joint frame from the outer periphery. This is a view of the inner sash frame of a building fixture in one embodiment, viewed from the glass frontage side. 1A and 1B are cross-sectional views of a joint portion of a fitting according to one embodiment, in which FIG. 1A shows an early stage of a fire outbreak, and FIG. These are cross-sectional views of the joints of building materials, where (a) shows the early stages of a fire, and (b) shows the state at the time of the fire. FIG. 11 is a cross-sectional view of a joint portion of a fitting according to another embodiment.

One embodiment of the fixture will be explained with reference to the drawings using the example of an externally movable single-sliding window, in which a frame body 1 is attached to the inner circumference of a building opening, a sliding screen 2 on the indoor side is fixed to the frame body 1, and a sliding screen 3 on the outdoor side is arranged so that it can slide freely.

As shown in FIG. 1, the fixture of this embodiment is composed of a frame body 1 formed by assembling an upper frame 11, a lower frame 12, and left and right vertical frames 13, 14 made of a metal material such as an aluminum alloy on all four sides, an inner screen 2 formed by assembling an upper frame 21, a lower frame 22, and left and right vertical frames 23, 24 made of a metal material such as an aluminum alloy on all four sides and fitting a panel body 25 such as double-glazed glass on the inner periphery, and fixed to the right side of the frame body 1 when viewed from the inside, and an outer screen 3 formed by assembling an upper frame 31, a lower frame 32, and left and right vertical frames 33, 34 made of a metal material such as an aluminum alloy on all four sides and fitting a panel body 35 such as double-glazed glass on the inner periphery, and arranged so as to be freely slidable on the inner periphery of the frame body 1.

-Frame-
As shown in Figure 2, the upper frame 11 that constitutes the frame body 1 has a projection wall 11a that is arranged on the inner surface of the building opening, an indoor side wall 11b that is continuous with the indoor side end of the projection wall 11a and extends in the visual direction, an outdoor side wall 11c that is continuous with the outdoor side end of the projection wall 11a and extends in the visual direction, a central wall 11d that extends downward from near the center in the visual direction of the inner surface of the projection wall 11a, and an outer upper rail 11e that extends downward from a position between the central wall 11d and the outdoor side wall 11c on the inner surface of the projection wall 11a.

The upper frame 11 holds airtight materials s111, s112 on the indoor side wall 11b and the outdoor side surface below the central wall 11d, respectively.
The airtight material s111 held on the indoor side wall 11b abuts against the indoor side of the upper frame 21 of the inner screen 2 fixed to the frame body 1, and the airtight material s112 held on the central wall 11d abuts or is close to the indoor side of the upper frame 31 of the outer screen 3 arranged so as to be freely slidable on the frame body 1, thereby forming an airtight line.

As shown in FIG. 2, the lower frame 12 constituting the frame body 1 has a bottom wall 12a arranged on the inner periphery of the building opening, a hollow indoor side standing part 12b erected on the indoor side of the bottom wall 12a, an indoor side wall 12c extending upward from the indoor side end of the indoor side standing part 12b, an outdoor side wall 12d extending upward from the outdoor side end of the bottom wall 12a, an inner lower rail 12e extending upward from the outdoor side inner periphery of the indoor side standing part 12b, an airtight material retaining piece 12f extending from the outdoor side of the indoor side standing part 12b toward the outside, and an outer lower rail 12g extending upward from the outdoor side inner periphery of the bottom wall 12a.

The lower frame 12 holds airtight materials s121, s122 on the exterior surface above the interior side wall 12c and on the exterior end of the airtight material retaining piece 12f, respectively.
The airtight material s121 held on the indoor side wall 12c abuts against the bottom frame 22 of the inner screen 2, and the airtight material s122 held by the airtight material holding piece 12f abuts or is close to the indoor side surface of the bottom frame 32 of the outer screen 3, each forming an airtight line.

As shown in FIG. 3, the left vertical frame 13 that constitutes the frame body 1 has a projection wall 13a that is arranged on the inner periphery of the building opening, an indoor side wall 13b that extends in the visible direction contiguous with the indoor side end of the projection wall 13a, an outdoor side wall 13c that extends in the visible direction contiguous with the outdoor side end of the projection wall 13a, a central wall 13d that extends in the inward direction from near the center of the projection direction on the inner periphery of the projection wall 13a, and a pull-in piece 13e that extends in the inward direction from a position between the central wall 13d and the outdoor side wall 13c on the inner periphery of the projection wall 13a.

The left vertical frame 13 holds airtight material s13 on the exterior side of the central wall 13d, and when the exterior screen 3 is closed, the airtight material s13 abuts against the interior side of the left vertical frame 33 to form an airtight line.

As shown in FIG. 3, the right vertical frame 14 that constitutes the frame body 1 has a projection wall 14a that is arranged on the inner periphery of the building opening, an indoor side wall 14b that extends in the visible direction contiguous with the indoor side end of the projection wall 14a, an outdoor side wall 14c that extends in the visible direction contiguous with the outdoor side end of the projection wall 14a, a central wall 14d that extends inward from near the center of the projection direction on the inner periphery of the projection wall 14a, and a pull-in piece 14e that extends inward from a position between the indoor side wall 14b and the central wall 14d on the inner periphery of the projection wall 14a.

The right vertical frame 14 holds airtight material s14 on the exterior surface of the interior wall 14b, and the airtight material s14 abuts against the interior side of the right vertical frame 24 of the inner screen 2 to form an airtight line.

-Inner Shoji Screen-
As shown in Figure 2, the upper frame 21 that constitutes the inner shoji 2 has a hollow portion and a ceiling portion 21a that faces the concealed wall 11a of the upper frame 11, a visible wall portion 21b that extends downward from the indoor side of the ceiling portion 21a, a visible wall portion 21c that extends from the lower end of the visible wall portion 21b to the indoor side, an indoor side wall 21d that extends downward from the indoor side end of the visible wall portion 21c, and a push edge 21e that is attached to the inner surface (bottom surface) of the ceiling portion 21a.

The upper frame 21 has a glass opening 21g formed between the indoor side wall 21d and the ridge 21e, and the panel body 25 is held in place via backup material and sealing material.
The upper frame 21 has a thermal expansion material f arranged on the upper surface of the ceiling portion 21a and inside the glass opening 21g, which expands due to heat in the event of a fire.

As shown in Figure 2, the bottom frame 22 that constitutes the inner sash 2 has a bottom frame main body 22a with a hollow section, an indoor side wall 22b that extends upward from the indoor side of the bottom frame main body 22a, an outdoor side wall 22c that extends upward from the outdoor side of the bottom frame main body 22a, a mounting piece 22d that extends downward from the indoor side underside of the bottom frame main body 22a, a partition piece 22e that extends downward from a position on the outdoor side of the bottom surface of the bottom frame main body 22a closer to the indoor side, and an attachment piece 22f that extends downward from the underside near the center in the projection direction of the bottom frame main body 22a.

The lower frame 22 has a glass opening 22g formed between the indoor side wall 22b and the outdoor side wall 22c, and the panel body 25 is held in place via backup material and sealing material.
The lower frame 22 has a thermal expansion material f arranged inside the glass opening 22g.

As shown in Figure 3, the left vertical frame (joint frame) 23 that constitutes the inner sash 2 has a left vertical frame main body 231 with multiple hollow sections, an interior side wall 23b that extends inward from the interior side of the left vertical frame main body 231, and a push edge 23c that is attached to the inner surface of the left vertical frame main body 231.

The left vertical frame 23 has a glass opening 23g formed between the interior side wall 23b and the ridge 23c, and the panel body 25 is held in place via backup material and sealing material.
The left vertical frame 23 has a smoke-reflecting piece and airtight material s23 arranged on the exterior side, and a crescent lock 61 provided on the outer circumferential side.
The left vertical frame 23 has thermal expansion materials f1, f arranged on the exterior side and inside the glass opening 23g.

As shown in FIG. 3, the right vertical frame 24 that constitutes the inner shoji screen 2 has a projection wall 24a, an interior side wall 24b that extends inward from the interior side of the projection wall 24a, a push edge 24c that is attached to the inner surface of the projection wall 24a, and a door edge groove portion 24d that continues to the outer periphery of the projection wall 24a.

The right vertical frame 24 has a glass opening 24g formed between the interior side wall 24b and the ridge 24c, and the panel body 25 is held in place via backup material and sealing material.
The right vertical frame 24 has a thermal expansion material f arranged inside the door end groove portion 24d and inside the glass opening 24g.

- Fixing the inner screen -
The inner shoji 2 is fixed to the frame body 1 by positioning the upper frame 21 between the interior side wall 11b and the central wall 11d of the upper frame 11 and fixing the mounting piece 22f of the lower frame 22 to the inner lower rail 12e of the lower frame 12.
When fixing the inner screen 2, the upper frame 21 is inserted between the indoor side wall 11b and the central wall 11d of the upper frame 11 using the Kendon method, and the mounting piece 22f of the lower frame 22 is dropped into the indoor side of the inner lower rail 12e of the lower frame 12, thereby installing the inner screen 2 in a fixed position.

When the inner screen 2 is installed in a fixed position, as shown in FIG. 2(c), the placement piece 22d is placed on the upper surface of the airtight material retaining portion 12h of the indoor side wall 12c of the lower frame 12, and the mounting piece 22f is abutted against the indoor side of the inner lower rail 12e of the lower frame 12, and the inner lower rail 12e and the mounting piece 22f are screwed together with the screw b, thereby fixing the inner screen 2 to the frame body 1.

As shown in FIG. 2(b), a clearance w is formed between the projected wall portion 21c of the upper frame 21 of the inner screen 2 fixed to the frame body 1 and the indoor side wall 11b of the upper frame 11. This allows the clearance w to absorb the thermal expansion that occurs in the vertical frame of the inner screen 2 during a fire, thereby suppressing damage during a fire.

In addition, when the inner screen 2 is fixed to the frame body 1, the airtight material s121 held by the airtight material holding portion 12h of the indoor side wall 12c of the lower frame 12 abuts against the indoor side of the partition piece 22e of the lower frame 22 of the inner screen 2 to form an airtight line, and a small space s is formed above the airtight material s121 by the mounting piece 22d of the lower frame 22, the partition piece 22e, and the airtight material s121.

The fixture of this embodiment places the thermal expansion material f22 in the small space s formed above the airtight material s121 of the bottom frame 12, so that gaps that arise when the airtight material s121 is burned during a fire can be efficiently sealed with a small amount of thermal expansion material f22.

Furthermore, the thermal expansion material f is disposed below the airtight material retaining portion 12h of the indoor side wall 12c of the bottom frame 12, so that it is possible to prevent smoke, flames, etc. from entering through the gap between the bottom frame 22 and the bottom frame 12 on the inner screen 2 side.

-Outer Shoji Screen-
As shown in Figure 2, the upper frame 31 that constitutes the outer shoji 3 has a ceiling portion 31a with a hollow portion, an indoor side wall 31b extending downward from the indoor side end of the ceiling portion 31a, a projected wall portion 31c extending from the outdoor side lower end of the ceiling portion 31a to the outdoor side, an outdoor side wall 31d extending downward from the outdoor side end of the projected wall portion 31c, and a rail receiving groove 31e formed on the outer periphery (upper) of the ceiling portion 31a.

The upper frame 31 has a glass opening 31g formed between the indoor side wall 31b and the outdoor side wall 31d, and the panel body 35 is held in place via backup material and sealing material.
The upper frame 31 has a thermal expansion material f arranged on the bottom surface of the rail receiving groove 31e.

As shown in FIG. 2, the lower frame 32 that constitutes the outer shoji screen 3 has a lower frame main body portion 32a with a hollow portion, an indoor side wall 32b that extends upward from the indoor side of the lower frame main body portion 32a, an outdoor side wall 32c that extends upward from the outdoor side of the lower frame main body portion 32a, and a rail guide portion 32d that continues below the lower frame main body portion 32a.

The lower frame 32 has a glass opening 32g formed between the indoor side wall 32b and the outdoor side wall 32c, and the panel body 35 is held in place via backup material and sealing material.
The lower frame 32 has a reinforcing material 322 made of steel or the like arranged inside the lower frame main body 32a, and a thermal expansion material f is arranged inside the lower frame main body 32a, inside the glass opening 32g, and on the indoor side of the outdoor guide wall that constitutes the rail guide portion 32d.

As shown in Figure 3, the left vertical frame (door end frame) 33 that constitutes the outer shoji screen 3 has a left vertical frame main body 33a with a hollow portion with a recess formed on the indoor and outdoor surfaces for a handle, an indoor side wall 33b that extends inward from the indoor side of the left vertical frame main body 33a, a projected wall 33c that extends inward from the outdoor side of the left vertical frame main body 33a, an outdoor side wall 33d that extends inward from the outdoor side end of the projected wall 33c, and a door end groove 33e that continues to the outer periphery of the left vertical frame main body 33a.

The left vertical frame 33 has a glass opening 33g formed between the indoor side wall 33b and the outdoor side wall 33d, and the panel body 35 is held in place via a backup material and a sealing material.
A pulling block 332 is arranged inside the door end groove portion 33e of the left vertical frame 33, and a thermal expansion material f is arranged inside the left vertical frame main body portion 33a, inside the glass opening 33g, and on the outdoor side surface of the indoor side wall portion that constitutes the door end groove portion 33e.

As shown in FIG. 3, the right vertical frame (joint frame) 34 that constitutes the outer sash 3 has a right vertical frame main body 34a with a hollow portion, an interior wall 34b that extends inward from the interior side of the right vertical frame main body 34a, a projected wall 34c that extends from the exterior inner peripheral end of the right vertical frame main body 34a to the exterior, and an exterior wall 34d that extends inward from the exterior end of the projected wall 34c.

The right vertical frame 34 has a glass opening 34g formed between the indoor side wall 34b and the outdoor side wall 34d, and the panel body 35 is held in place via a backup material and a sealing material.
The right vertical frame 34 has a smoke deflector arranged on the indoor side and a crescent receiver 62 on the indoor inner circumference.
In addition, a sealing material holding member 344 is attached to the outer peripheral surface of the right vertical frame 34, and holds a sealing material s34 whose tip abuts or is close to the exterior side surface of the inner screen 2.

As shown in Figures 3 and 4, the right vertical frame 34 has a reinforcing member 342 made of steel or the like and having a roughly U-shaped cross section arranged inside the right vertical frame body 34a, and a glass outer retaining reinforcing member 343 made of stainless steel or the like and having a roughly L-shaped cross section arranged inside the glass opening 34g, which are fastened together with screws b. Thermal expansion material f is arranged on the reinforcing member 342 inside the right vertical frame body 34a, inside the glass opening 34g, and on the interior side of the right vertical frame body 34a.

- Composition of the assortment section -
The fixture of this embodiment is endowed with high fire resistance by using a reinforcing material that is placed on the joint frame (left vertical frame) of the inner screen 2, which is susceptible to the effects of flames in the event of a fire.
The configuration of the assembling section of this embodiment will be described in detail below.

As shown in Figure 4, the aluminum left vertical frame (joint frame) 23 of the inner sash 2 has two hollow sections 231a, 231b adjacent to each other in the forward direction facing the bottom wall 231g of the glass opening 23g in the left vertical frame main body 231, and a thermal expansion material f1 and an airtight material s23 are arranged along the longitudinal direction on the exterior side.

Of the two hollow sections of the left vertical frame 23, the outer hollow section 231a, which is located on the outdoor side, has a roughly rectangular cross section and is located on the outer periphery of the glass opening 23g, and has a roughly U-shaped cross section reinforcing member 232 made of steel or the like disposed inside.

On the other hand, the indoor hollow section 231b, which is located on the indoor side of the two hollow sections, has a cross section that is roughly L-shaped, extending from the outer periphery of the glass opening 23g to the indoor side, is adjacent to the indoor side of the outdoor hollow section 231a, and has a reinforcing material 233 made of steel or the like arranged inside.

A resin airtight piece 8 is attached to the lower end of the left vertical frame 23.
As shown in Figures 5 (e) and (f), the airtight piece 8 has a block-shaped mounting main body 81 having a guide groove 81a that guides the inner lower rail 12e, an indoor-side lower airtight piece 84 provided on the indoor-side underside of the mounting main body 81, an outdoor-side lower airtight piece 83 provided on the outdoor-side underside of the mounting main body 81, and an outdoor-side airtight piece 82 that continues to the outdoor side of the mounting main body 81 via a connecting portion 82a and extends upward beyond the mounting main body 81.
In addition, the outdoor airtight piece 82, the outdoor lower airtight piece 83 and the indoor lower airtight piece 84 of the airtight piece 8 are formed, for example, from multiple fin pieces (five in Figure 5), and the outdoor airtight piece 82 and the outdoor lower airtight piece 83 may be integrally continuous.

The left vertical frame 23 of the inner screen 2 is machined for mounting an airtight piece 8.
Specifically, as shown in Figures 5(a) and (b), a notch c1 is formed in the lower part of the outdoor wall 231j of the outdoor hollow portion 231a to allow the connecting portion 82a of the outdoor airtight piece 82 of the airtight piece 8 to pass through, and a notch c2 is formed in the lower part of the central visible wall 231k separating the outdoor hollow portion 231a and the indoor hollow portion 231b to cut out the interfering portion with the airtight piece 8.
In addition, if the shape of the mounting body 81 of the airtight piece 8 does not cause interference between the airtight piece 8 and the central visible wall 231k, the notch c2 does not need to be formed.

The airtight piece 8 is attached to the underside of the left vertical frame 23 by inserting the mounting body part 81 from below into the outdoor side hollow part 231a of the left vertical frame body part 231 of the left vertical frame 23.

As shown in Figures 5(d) and 6(b), the airtight piece 8 attached to the lower end of the left vertical frame 23 has an exterior airtight piece 82 that extends toward the exterior below the thermal expansion material f1 provided on the exterior side (exterior wall 231j) of the left vertical frame 23, and the exterior airtight piece 82 is adjacent to the airtight material s23 held by the airtight material holder 231m.

As shown in Figure 6 (b), on the upper surface of the lower frame 12 below the left vertical frame 23 of the inner screen 2, an indoor airtight part 85 and an outdoor airtight part 86 are arranged on the indoor and outdoor sides of the inner lower rail 12e, respectively, and the indoor side lower airtight piece 84 and the indoor side airtight part 85 of the airtight piece 8 make the space between the underside of the left vertical frame 23 on the indoor side of the inner lower rail 12e and the lower frame 12 airtight, and the outdoor side lower airtight piece 83 and the outdoor airtight part 86 make the space between the underside of the left vertical frame 23 on the outdoor side of the inner lower rail 12e and the lower frame 12 airtight.
In addition, the exterior airtight piece 82 and the airtight material s23 provide an airtight seal between the exterior side of the left vertical frame 23 of the inner screen 2 and the interior side of the right vertical frame 34 of the outer screen 3 at a position below the left vertical frame 23.

The reinforcing material 232 arranged inside the exterior hollow portion 231a of the left vertical frame 23 of the inner screen 2 is arranged so as to open to the exterior, as shown in Figures 4 and 6 (a), with a projection piece 232a along the outer peripheral side of the glass opening 23g, a projection piece 232b continuing from the projection piece 232a on the interior side, and a projection piece 232c continuing from the projection piece 232b on the exterior side, and is arranged so as to open to the exterior, and is arranged over almost the entire height of the inner screen 2 as shown in Figure 7.

As shown in Figures 4, 6 (a) and (b), a thermal expansion material f2 is arranged in the lower part of the outdoor side surface of the facing piece 232b of the reinforcing material 232, and its lower end reaches a position lower than the thermal expansion material f1 arranged on the outdoor side surface of the left vertical frame 23.

On the other hand, the reinforcing material 233 arranged inside the indoor hollow portion 231b of the left vertical frame 23 of the inner shoji screen 2 has, as shown in Figures 4 and 6 (a), a visible piece 233a along the indoor side of the glass opening 23g, a visible piece 233b that is continuous with the visible piece 233a and along the outer periphery side of the glass opening 23g, a peripheral visible piece 233c along the inner peripheral side of the indoor hollow portion 231b, and a connecting visible piece 233d that connects the visible piece 233b and the peripheral visible piece 233c, and is formed in a shorter dimension than the reinforcing material 232 arranged inside the outdoor hollow portion 231a, as shown in Figure 7.

As shown in Figures 4 and 7, the inner shoji screen 2 has a short, plate-shaped connecting member 235 made of a metal material such as stainless steel arranged within the glass opening 23g of the left vertical frame (joint frame) 23.
Multiple connecting materials 235 are arranged vertically along the bottom wall 231g of the glass opening 23g, and are arranged so as to span the outdoor side hollow portion 231a and the outdoor side hollow portion 231b adjacent in the forward direction.

The reinforcing material 232 arranged inside the exterior hollow portion 231a is arranged so that the projection piece 232a abuts the exterior-side outer peripheral surface of the bottom wall 231g of the glass opening 23g, and is fastened together with the connecting material 235 to the bottom wall 231g of the glass opening 23g by fastening means b such as a screw.

The reinforcing material 233 arranged inside the indoor hollow portion 231b is arranged so that the projection piece 233b abuts against the outer peripheral surface of the bottom wall 231g of the glass opening 23g closer to the interior of the room, and is fastened together with the connecting material 235 to the bottom wall 231g of the glass opening 23g by fastening means b such as a screw.

The facing piece 233a and the projection piece 233b of the reinforcing material 233 fixed to the bottom wall 231g of the glass opening 23g have a size and shape that extends from the facing surface on the interior side of the panel body 25 held in the glass opening 23g to the outer peripheral side, with the facing piece 233a covering the interior side of the glass opening 23g and the projection piece 233b covering the outer peripheral side of the glass opening 23g.

-Effects of the fittings of this embodiment-
When a fire breaks out on the indoor side, as shown in Fig. 9(a), the indoor side wall 231h of the left vertical frame body 231 of the left vertical frame 23 is exposed to the flames and burned down, and the bottom wall 231g and the indoor side front wall 231i constituting the glass frontage 23g are easily affected by the flames and heat. Therefore, at an early stage of the fire, as shown in Fig. 9(b), the bottom wall 231g and the indoor side front wall 231i of the glass frontage 23g may melt or deform, and a gap S may occur between the glass frontage 23g of the left vertical frame 23 and the panel body 25.

In the fittings of this embodiment, a reinforcing material 233 having a facing piece 233a and a facing piece 233b that run from the facing surface on the indoor side of the panel body 25 held by the glass opening 23g to the outer periphery side of the panel body 25 is fixed inside the indoor hollow portion 231b of the left vertical frame body 231 of the joint frame (left vertical frame 23). As shown in FIG. 8(a), even if a fire breaks out on the indoor side and the indoor side wall 231h of the left vertical frame body 231 of the joint frame (left vertical frame 23) is burned, the facing piece 233a and the facing piece 233b of the reinforcing material 233 such as steel protect the indoor side and the outer periphery of the glass opening 23g that holds the panel body 25, and the shape of the glass opening 23g can be maintained, and the spread of the fire can be delayed.

Furthermore, in the fitting of this embodiment, the reinforcing material 233 arranged inside the indoor hollow portion 231b is fastened together with the connecting material 235 arranged inside the glass opening 23g, and the connecting material 235 is fastened together with the reinforcing material 232 to the outdoor hollow portion 231a, which is relatively less susceptible to the effects of fire. Therefore, even if the reinforcing material 233 warps and the connection portion with the bottom wall 231g of the glass opening 23g is torn, it is maintained by the connecting material 235, and as shown in FIG. 8(b), the outer peripheral side (bottom wall 231g) and the indoor side (indoor opening wall 231i) of the glass opening 23g are protected, and the spread of fire can be delayed.

In addition, in the fitting of this embodiment, the reinforcing material 232 arranged inside the outdoor hollow portion 231a has an outer piece 232b arranged along the central outer wall 231k that forms the indoor side of the outdoor hollow portion 231a, and the thermal expansion material f2 is arranged in the outdoor lower part of the outer piece 232b. Therefore, in the event of a fire, the thermal expansion material f2 of the outer piece 232b foams in the outdoor direction and fills the outdoor hollow portion 231a, preventing gas and smoke from traveling through the outdoor hollow portion 231a.

Furthermore, the lower end of the visible piece 232b of the reinforcing material 232 inside the exterior hollow portion 231a has a length that reaches below the thermal expansion material f1 arranged on the exterior side of the left vertical frame 23, and the thermal expansion material f2 is arranged so that the thermal expansion material f2 can be foamed closer to the notch c1 that is exposed when the plastic airtight piece 8 melts in the event of a fire, suppressing the formation of a communication passage through which gas and smoke can travel.

-Other embodiments-
In the description of the above embodiment of the building fixtures, reinforcing materials 232, 233 are placed in each of the multiple hollow portions of the frame material, and the connecting material 235 placed in the glass opening 23g is fastened and fixed to both reinforcing materials 232, 233, but it is not necessary for reinforcing materials to be placed in all of the multiple hollow portions.

For example, the reinforcing material 233 may be placed only in the indoor hollow portion 231b, and the connecting material 235 may be fastened together with the reinforcing material 233 to the bottom wall 231g of the glass opening 23g, and may also be fastened to the outdoor hollow portion 231a with screws.

By fixing the connecting material 235 to the outdoor hollow portion 231a, which is relatively less susceptible to the heat of a fire, the reinforcing material 233 can be maintained by the connecting material 235 even if the indoor side and the outer periphery close to the indoor side of the glass opening 23g melt, so the panel body 25 can be held and the spread of fire can be delayed.

The number of hollow portions of the frame material is not limited to two, and the reinforcing material may be disposed in any of the hollow portions. Also, the connecting material may be disposed so as to span any of the hollow portions.
Furthermore, the frame material having multiple hollow portions and in which the connecting materials are arranged is not limited to the joint frame of an inner screen, but may be any frame material such as the joint frame of an outer screen, and may also be the frame material of a window frame that supports a screen or the frame material that constitutes a fixed window.

Furthermore, the shape of the reinforcing material 233 disposed inside the hollow portion of the frame material is not limited.
For example, as shown in FIG. 10(a), the inset piece 233a of the reinforcing material 233 may be arranged with a gap from the indoor side surface (indoor side front wall 231i) of the glass frontage 23g.
In addition, the reinforcing material 233 may be formed so as to fit along the indoor side surface (indoor side wall 231h) of the indoor side hollow portion 231b by having a prospective piece 233e extending from the inner end of the prospective piece 233a toward the indoor side, and further providing a prospective piece 233f extending toward the outer periphery.
By placing a visible piece 233f of the reinforcing material 233 on the back surface of the indoor side wall 231h of the indoor side hollow portion 231b, flames and heat can be received at a position away from the glass opening 23g, and the transmission of flames and heat to the glass opening 23g can be suppressed.

Furthermore, the location where the reinforcing members 232, 233 are fixed to the left vertical frame (frame member) 23 is not limited to the bottom wall 231g of the glass opening 23g.
For example, as shown in Figure 10 (b), the reinforcing members 232, 233 may be fixed by fastening the facing piece 232b of the reinforcing member 232 and the connecting facing piece 233d of the reinforcing member 233 together with a screw b across a central facing wall 231k that separates the outdoor hollow portion 231a and the indoor hollow portion 231b.
In addition, the screw b can be screwed into a screw insertion hole formed on the outdoor side of the outdoor hollow portion 231a through which the screw is inserted. After the reinforcing materials 232, 233 are fastened together, the screw insertion hole can be closed with a cap or with a thermal expansion material f1.
In addition, the reinforcing material 233 in the indoor hollow portion 231b may be fixed to the left vertical frame 23 by screwing the attachment piece 233a to the indoor side surface of the glass opening 23g (the indoor opening wall 231i).

The fittings to which the present invention can be applied are not limited to externally movable single sliding windows, but can be applied to all kinds of windows, such as sliding windows and casement windows.
In addition, it goes without saying that the above embodiments do not limit the invention described in the claims, but are to be treated as examples.

2: Inner shoji 23: Left vertical frame 23g: Glass opening 25: Panel body 231: Left vertical frame main body 231a: Exterior hollow portion 231b: Interior hollow portion 231g: Bottom wall 232: Reinforcing material 232b: Facing piece 233: Reinforcing material 233a: Facing piece 233b: Facing piece 235: Connecting material b: Screw

Claims (2)

It is equipped with an aluminum frame and a panel body held by the frame,
The frame material has a main body and a glass opening formed on an inner periphery side of the main body,
The main body has a hollow portion extending from the front surface of the glass to the outer periphery, and a reinforcing material is disposed within the hollow portion.
The reinforcing material has a facing piece and a facing piece that run from the facing surface of the panel body held at the glass frontage to the outer periphery side, and is a fixture that is fixed to the outer periphery side or facing surface of the glass frontage. It is equipped with an aluminum frame and a panel body held by the frame,
The frame material has a main body and a glass opening formed on an inner periphery side of the main body,
The main body has a hollow portion extending from the front surface of the glass to the outer periphery, and a reinforcing material is disposed within the hollow portion.
The reinforcing material has a facing piece and a projection piece that run from the facing surface of the panel body held at the glass frontage along the outer peripheral side surface, and also has another facing piece that extends further from the projection piece, with the other facing piece being fixed to the facing wall of the hollow section.

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