JP2018096061A - Fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the assembling workability of a fire protection structure by reducing the number of parts thereof while achieving the fire prevention structure in which a through hole is hardly formed even when exposed to a flame when an upper frame made of a synthetic resin is adopted.SOLUTION: A fitting 1 includes an upper frame 21 made of a synthetic resin, an outer sliding door 3 and an inner sliding door 4, and a non-flammable or flame retardant reinforcing member 5 provided inside a first hollo portion 218, fixed to a building body and reinforcing the upper frame 21, and a nonflammable or flame retardant fire insulator 6 provided inside a second hollow portion 210, extending along a longitudinal direction of the second hollow portion 210 and facing upper side portions of the inner sliding door 3 and the outer sliding door 4 and the depth direction. First heat-expandable members 11, 12 to be expanded when being heated are provided on surfaces of the fire insulator 6 which face the upper side portions of the inner sliding door 3 and the outer sliding door 4 and the depth direction. The fire insulator 6 is supported by the reinforcement member 5 and movable downwardly.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a fitting such as a sliding window.

Conventionally, in joinery such as sliding windows, a frame made of synthetic resin attached to the edge of the opening of the building, and a shoji that can be opened and closed by moving while being guided by the frame In addition, joinery with a shoji) is known.
By the way, when the opening part of the building is closed in the door butt side portion of the external shoji and the internal shoji, it constitutes a frame, unlike the door side portion. It is not supported by a vertical frame. For this reason, if the frame is heated and melted due to a fire or the like, the summoning part (when the opening of the building is closed with a shoji and inner shoji, In the upper part of the facing part), a through-hole is easily formed between the upper frame constituting the frame and the outer and inner shoji. When the through hole is formed in this way, the flame penetrates the inside and outside of the room through the through hole.

Thus, there has been proposed a joinery that employs a fire prevention structure in which the above-described through-hole is difficult to be formed even when exposed to a flame (see, for example, Patent Document 1).
In the joinery described in Patent Document 1, the upper frame is provided on a first hollow portion (central hollow portion) extending along the edge of the opening in the building and a prospective surface on the lower side in the first hollow portion. And a second hollow portion (inner peripheral hollow portion) extending along the longitudinal direction of the first hollow portion, and is made of a resin material.
Here, the site | part located in a summoning part is excised from the 2nd hollow part. That is, the second hollow portion is provided on both sides of the excised site.
And the inside of a 1st hollow part is provided with the nonflammable or flame-retardant reinforcement member (1st frame side reinforcement member) which is fixed to the housing of a building and reinforces an upper frame. Moreover, in the inside of two 2nd hollow parts, the said 2nd 2nd hollow part is penetrated, and the nonflammable or flame-retardant flame-shielding member which opposes the site | part of the upper side of an outer and a shoji is facing in a prospective direction. Is provided. Further, when the opening of the building is closed with the external obstacle and the internal imperial in the flame shield member, the surface facing the upper part of the external impeller and the internal impeller in the prospective direction is thermally expanded. Each of which is provided with a thermal member (thermally expandable graphite). Further, a nonflammable relay member that is fixed to the reinforcing member and supports the flame shield member is provided between the two second hollow portions.
As described above, in the fire prevention structure described in Patent Literature 1, the flame shield member, the relay member, and the thermally expandable member are provided so as to face the upper part of the outer and inner pouches in the expected direction. Thereby, in the fire prevention structure of patent document 1, in the upper part of the summoning part, the structure where a through-hole is hard to be formed between an upper frame, an external obstacle, and an internal impediment is implement | achieved.

Japanese Patent Laying-Open No. 2015-105466

  However, the fire prevention structure described in Patent Document 1 employs a reinforcing member, a flame shielding member, a relay member, and a thermally expandable member, and considering the assembly workability of joinery, It is not a suitable number of parts. For this reason, when a synthetic resin upper frame is adopted, a fire-proof structure in which a through-hole is not easily formed even when exposed to a flame is achieved, while the number of parts of the fire-proof structure is reduced and the assembling workability of the joinery is improved. There is a demand for a technique that can be applied.

  In view of the above circumstances, the present invention realizes a fire prevention structure in which a through-hole is not easily formed even when exposed to a flame when a synthetic resin upper frame is adopted, while reducing the number of parts of the fire prevention structure, An object of the present invention is to provide a joinery that can improve assembly workability.

  To achieve the above object, a joinery according to the present invention is provided on a first hollow portion extending along an edge of an opening in a building, and a prospective surface on a lower side of the first hollow portion, An upper frame made of synthetic resin having a second hollow portion extending along the longitudinal direction of the one hollow portion, and an upper portion thereof facing the second hollow portion in the prospective direction, in the longitudinal direction of the upper frame A shoji that moves along and can open and close the opening, and a non-flammable or flame-retardant reinforcement that is provided inside the first hollow portion and is fixed to the housing of the building and reinforces the upper frame A nonflammable or flame-retardant member provided inside the second hollow portion, extending along the longitudinal direction of the second hollow portion, and facing the upper portion in the prospective direction And facing the upper side portion of the flame shield member in a prospective direction. The surface, the first thermal expansion member is provided which is inflated by being heated, the flame blocking member, said supported on the reinforcing member, characterized in that it can move toward the lower side.

In the present invention, the incombustible or incombustible reinforcing member is provided inside the first hollow portion and is fixed to the building frame. Moreover, the nonflammable or flame-retardant flame shielding member is provided inside the second hollow portion, and is opposed to the upper portion of the shoji in the prospective direction and supported by the reinforcing member. Furthermore, the 1st thermally expansible member is provided in the surface which opposes the site | part above the shoji in a flame-shielding member in a prospective direction. For this reason, even if it is a case where it heats by a flame etc. and the upper frame fuse | melts, the flame-shielding member and the site | part of the upper side of a shoji are facing in the prospective direction. And the 1st thermally expansible member can block | close the clearance gap between a flame-shielding member and a shoji by the said 1st thermally expansible member because it expand | swells by heating.
In particular, the flame shield member is supported by the reinforcing member and is movable downward. For this reason, in a state where the upper frame (second hollow portion) is melted by being heated by a flame or the like, the flame shield member moves downward. That is, in the upper part of the summoning portion, the area where the flame shield and the shoji face in the prospective direction is large. For this reason, when a 1st thermally expansible member expand | swells by heating, the clearance gap between a flame-shielding member and a shoji can be effectively obstruct | occluded with the said 1st thermally expansible member in the upper part of a summoning part. .
Therefore, when a synthetic resin upper frame is adopted, a fire-proof structure in which a through-hole is hardly formed between the upper frame and the shoji at the top of the summoning portion even when exposed to a flame can be realized. . Moreover, since it can comprise with a reinforcement member, a flame-shielding member, and a 1st thermally expansible member as the said fire prevention structure, it becomes the number of parts suitable for the assembly workability | operativity of joinery.
From the above, according to the joinery according to the present invention, when a synthetic resin upper frame is employed, the number of parts of the fire prevention structure is realized while realizing a fire prevention structure in which a through-hole is not easily formed even when exposed to a flame. And the assembly workability can be improved.

Further, according to the present invention, in the joinery described above, the flame shield member is reinforced so that a longitudinal center position thereof opposes a door-side portion of the shoji in a state where the opening is closed. It is supported by a member.
In the present invention, the flame shield member is fixed at the position described above with respect to the reinforcing member. Here, as a structure that allows the flame shield member to move downward, for example, a case is assumed in which a flame shield member is bent convexly by its own weight. In this case, in the state where the flame shield member is bent by its own weight, the area where the flame shield member and the shoji face in the prospective direction can be maximized in the upper portion of the summoning portion. Therefore, when the first thermally expandable member expands by heating, the first thermally expandable member can most effectively close the gap between the flame shield member and the shoji at the top of the summoning portion. .

Further, according to the present invention, in the joinery described above, the second hollow portion has a prospective wall portion that constitutes a lower prospective surface abutting against a lower end portion of the flame shield member, and faces downward on the flame shield member. It is characterized by restricting movement.
In the present invention, the second hollow portion regulates the downward movement of the flame shield member as described above. That is, before the second hollow portion is melted by a flame or the like, the flame shield member is accommodated in a posture in which movement toward the lower side is restricted inside the second hollow portion. On the other hand, when the second hollow portion is melted by a flame or the like, the restriction by the second hollow portion is released and the flame shield member moves downward. For this reason, the dimension of the up-down direction of a 2nd hollow part can be made small compared with the structure accommodated in the inside of a 2nd hollow part in the state which the flame-shielding member moved to the downward side previously. Therefore, the upper frame can be reduced in size.

In the joinery described above, the present invention is characterized in that a second thermally expandable member that expands when heated is provided between the reinforcing member and the flame shield member.
In the present invention, the second thermally expandable member is provided at the position described above. For this reason, when a 2nd thermally expansible member expand | swells by heating, a flame shield member can be pushed down and the said flame shield member can be moved toward the downward side. That is, in the upper part of the summoning portion, the area where the flame shield member and the shoji are opposed to each other in the prospective direction is further increased, and the gap between the flame shield member and the shoji is more effectively blocked by the first thermally expandable member. be able to. In addition, the gap between the flame shield member and the reinforcing member that has moved downward can be closed by the second thermally expandable member.

  According to the joinery according to the present invention, when a synthetic resin upper frame is adopted, the number of parts of the fire prevention structure is reduced while realizing a fire prevention structure in which a through-hole is not easily formed even when exposed to a flame. There is an effect that workability can be improved.

FIG. 1 is a view of a joinery according to Embodiment 1 of the present invention as viewed from the indoor side. FIG. 2 is an enlarged vertical sectional view of a main part of the joinery shown in FIG. FIG. 3 is a perspective view of the upper frame shown in FIGS. 1 and 2 as seen from the outdoor side. FIG. 4 is a perspective view showing a left portion of the flame shield member shown in FIG. 3 when viewed from the outdoor side. FIG. 5 is a perspective view showing a right side portion of the flame shield member shown in FIG. 3 when viewed from the outdoor side. FIG. 6 is a diagram illustrating a positional relationship between the pair of first thermally expandable members illustrated in FIGS. 4 and 5. FIG. 7 is a diagram for explaining the effect of the first embodiment of the present invention. FIG. 8 is an enlarged vertical cross-sectional view of a main part of a joinery according to Embodiment 2 of the present invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, modes for carrying out the present invention (hereinafter, embodiments) will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Furthermore, the same code | symbol is attached | subjected to the same part in description of drawing.

(Embodiment 1)
[Schematic structure of joinery]
FIG. 1 is a view of a joinery 1 according to Embodiment 1 of the present invention as viewed from the indoor side. FIG. 2 is an enlarged vertical cross-sectional view of a main part of the joinery 1.
The “prospective direction” described below is a direction along the depth of the joinery 1 as indicated by an arrow Ar in FIG. A plane along the prospective direction may be referred to as a prospective surface, and a plane orthogonal to the prospective direction may be referred to as a finding surface.
The joinery 1 includes a sliding window, and includes a frame body 2, an outer shoji 3, and an inner shoji 4.
The frame body 2 is configured by quadrangling the upper frame 21, the lower frame 22, the left frame 23 located on the left side in FIG. 1, and the right frame 24 located on the right side in FIG. It is attached along the edge of Op.
In the present embodiment, each of the frame members 21 to 24 is an extruded shape member made of a synthetic resin and has a substantially uniform cross-sectional shape over the entire length.
In addition, the detailed structure of the upper frame 21 which becomes the principal part of this invention is mentioned later.

The external shoji 3 is a portion corresponding to the shoji according to the present invention, is located on the outdoor side with respect to the internal shoji 4, and is attached to the frame 2 so as to be movable in the horizontal direction in FIG. . The external shoji 3 includes a face material 31 and a housing 32.
The face material 31 is composed of two layers of double-layer glass in which a pair of glass plates 312 and 313 are arranged facing each other with a space therebetween via a spacer 311.
The housing 32 is constituted by assembling an upper housing 321, a lower housing 322, a door-end housing 323, and a summoning housing (not shown), and holds the face material 31 inside.
These upper rod 321, lower rod 322, door rod 323, and summon rod (not shown) are extruded shapes made of synthetic resin or metal such as aluminum and have a substantially uniform cross-sectional shape over the entire length. Have

  The inner shoji 4 is a portion corresponding to the shoji according to the present invention, and is attached to the frame 2 so as to be movable in the left-right direction in FIG. The inner shoji 4 includes a face material 31 (including a spacer 311 and a pair of glass plates 312 and 313) and a casing 32 (upper rod 321, lower rod 322, door rod 323, and summon rod) in the outer shoji 3. (Including a spacer 411 and a pair of glass plates 412 and 413) and a housing 42 (upper rod 421, lower rod 422, door rod 423, and summon rod 424). Including).

  When the door toe 323 abuts on the left frame 23 and the door toe 423 abuts on the right frame 24 in the above-described external shoji 3 and the internal shoji 4, ) And the summoning skirt 424 of the inner shoji 4 are engaged with each other. Then, the opening Op is closed by the external obstacle 3 and the internal obstacle 4. In this state, a space between the summon bowl (not shown) of the external shoji 3 and the summon bowl 424 of the inner shroud 4 can be locked by a crescent CR (FIG. 1). By locking with the crescent CR, the outer shoji 3 and the inner shoji 4 are held in a state in which the opening Op is closed.

In the first embodiment, the upper frame 21 includes a reinforcing member 5 (FIG. 2) that reinforces the upper frame 21, and a flame barrier that forms a fire prevention structure on the upper end side of the joinery 1 together with the reinforcing member 5. A member 6 (FIG. 2) is provided.
Hereinafter, the configuration of the upper frame 21, the reinforcing member 5, and the flame shield member 6 will be described in order.

[Configuration of upper frame]
FIG. 3 is a perspective view of the upper frame 21 as viewed from the outdoor side.
The upper frame 21 includes a frame main body portion 211, an outer wall portion 212, an inner wall portion 213, a central wall portion 214, a housing fixing portion 215, and an interior material fixing portion 216.
The frame main body 211 has a rectangular tube shape extending along the edge of the opening Op, and includes end hollow portions 217 and 219 and a central hollow portion 218 arranged along the prospective direction. Among these hollow portions 217 to 219, the central hollow portion 218 located at the center in the prospective direction is formed to have a larger length dimension in the prospective direction than the end hollow portions 217 and 219 located on the outdoor side and the indoor side, respectively. ing. The reinforcing member 5 is provided inside the central hollow portion 218. That is, the central hollow portion 218 corresponds to the first hollow portion according to the present invention.

The outer wall portion 212 and the inner wall portion 213 are portions extending downward from the outdoor side end portion and the indoor side end portion of the frame main body portion 211, respectively.
The central wall portion 214 is a portion extending downward from the prospective surface on the lower side in the central hollow portion 218, and divides the space between the outer wall portion 212 and the inner wall portion 213 into two regions in the prospective direction. Further, the central wall portion 214 has an inner peripheral hollow portion 210 penetrating the entire length of the central wall portion 214. The flame shield member 6 is provided inside the inner peripheral hollow portion 210. That is, the inner peripheral hollow portion 210 corresponds to the second hollow portion according to the present invention.

Here, the U-shaped groove portion constituted by the outer wall portion 212, the central wall portion 214, and the lower-side prospective surface of the frame main body portion 211 accommodates the upper portion of the shoji 3. . In other words, the upper portion of the external shoji 3 faces the central wall 214 in the prospective direction. Further, in the groove portion, when the external shoji 3 is in a closed state, the nonflammable hanging metal fitting 7 is located at a position facing the door butt side portion (summing portion) of the external shoji 3 in the prospective direction. Is provided.
The hanging metal fitting 7 includes a base portion 71 extending along the prospective direction, a hook-like portion that bends and extends downward from an outdoor side end portion of the base portion 71, and further has a distal end portion bent to the indoor side. 72. Then, the base 71 (the hanging metal fitting 7) is fixed to the reinforcing member 5 with a screw Sc1 via a prospective wall portion that constitutes a prospective surface on the lower side of the central hollow portion 218.

In addition, the U-shaped groove portion constituted by the inner wall portion 213, the central wall portion 214, and the lower prospective surface of the frame main body portion 211 accommodates the upper portion of the inner shoji 4. That is, the upper part of the inner shoji 4 faces the central wall 214 in the prospective direction. Further, in the groove portion, when the inner impeller 4 is in a closed state, the nonflammable hanging metal fitting 8 is located at a position facing the door butt side portion (summing portion) of the inner impeller 4 in the expected direction. Is provided.
The hanging bracket 8 includes a base portion 81 extending along the prospective direction, a hook-like portion that is bent and extended downward from the indoor side end portion of the base portion 81, and the distal end portion is bent outward. 82. Then, the base 81 (the hanging metal fitting 8) is fixed to the reinforcing member 5 with a screw Sc2 via a prospective wall portion that constitutes a prospective surface on the lower side of the central hollow portion 218.
And the hanging metal fittings 7 and 8 were respectively provided at the upper ends of the outer and outer nails 3 and 4 when the outer and outer nails 3 and 4 were heated and melted by a flame or the like and moved downward. The hooks 33 and 43 are engaged with each other. That is, the hanging metal fittings 7 and 8 each have a function of preventing the downward movement (dropout) of the outer shoji 3 and the inner shoji 4.

The frame fixing portion 215 is a portion that extends in a fin shape upward from the prospective surface on the upper side in the frame main body portion 211 (central hollow portion 218), and is fixed to a building frame (not shown) by a screw Sc3. .
The interior material fixing portion 216 extends in a fin shape from the indoor-side finding surface of the inner wall portion 213 to the interior side, and is used as an interior material (not shown) such as a frame that is juxtaposed on the interior side with respect to the frame body 2. On the other hand, it is a portion fixed by screws Sc4.

(Structure of reinforcing member)
The reinforcing member 5 is provided inside the central hollow portion 218. The reinforcing member 5 is a metal member such as aluminum having substantially the same total length as the upper frame 21 and has a substantially uniform cross-sectional shape over the entire length. The reinforcing member 5 includes a lower facing portion 51, an inner facing portion 52, an upper extending portion 53, and an upper and lower joining wall portion 54.
The lower facing portion 51 is a portion that extends along the prospective direction and faces the prospective wall portion that constitutes the prospective surface on the lower side in the central hollow portion 218. Then, screws Sc1 and Sc2 are respectively screwed into the lower facing portion 51, and the hanging metal fittings 7 and 8 are fixed via the screws Sc1 and Sc2.
The upward extending portion 53 is a portion that bends and extends upward from the outdoor end portion of the lower facing portion 51 and faces the outdoor wall portion of the central hollow portion 218.
The upper and lower joining wall portion 54 bends and extends upward from the indoor side end portion of the lower facing portion 51 and connects the indoor side end portions of the lower facing portion 51 and the inner facing portion 52 up and down. It faces the wall on the indoor side in the central hollow portion 218.

The inner facing portion 52 is a portion that bends and extends from the upper end portion of the upper and lower joining wall portion 54 to the outdoor side, and faces the prospective wall portion constituting the upper prospective surface in the central hollow portion 218. . A screw Sc5 is screwed into the inner facing portion 52 via a prospective wall portion that constitutes an upper prospective surface in the central hollow portion 218. And the reinforcement member 5 is fixed to the connection metal fitting 9 provided in the upper side of the upper frame 21 with this screw Sc5.
The connecting metal fitting 9 extends along the prospective direction, and is bent upward from the first fixed piece 91 fixed to the reinforcing member 5 with the screw Sc5 and the outdoor fixed end of the first fixed piece 91. The second fixed piece 92 extends, and has an L shape in cross section. And the 2nd fixing piece 92 is fixed to the said housing with the screw Sc3 with the housing fixing | fixed part 215 in the state pinched | interposed between the housing fixing | fixed part 215 and the housing (not shown) of a building. That is, the reinforcing member 5 is fixed to a building frame (not shown) via the connecting fitting 9.

(Configuration of flame shield member)
FIG. 4 is a perspective view showing the left part of the flame shield member 6 when viewed from the outdoor side. FIG. 5 is a perspective view showing the right portion of the flame shield member 6 as viewed from the outdoor side.
The flame shield member 6 is provided inside the inner peripheral hollow portion 210. The flame shield member 6 is made of a metal material such as aluminum, and has substantially the same total length as that of the upper frame 21. The flame shield member 6 includes a flame shield wall portion 61, a pair of reinforcing pieces 62, and a pair of attachment pieces 63, and has a U-shape in sectional view.
The flame barrier wall 61 is composed of a plate body that extends along the longitudinal direction of the inner peripheral hollow portion 210, and has a posture in which each plate surface faces the indoor side and the outdoor side inside the inner peripheral hollow portion 210. Arranged.
The pair of reinforcing pieces 62 are portions that reinforce the flame barrier wall 61, and bend and extend outward from the upper and lower ends of the flame barrier wall 61.
The pair of attachment pieces 63 are portions of the pair of reinforcement pieces 62 that extend in the left direction and the right direction when the upper reinforcement piece 62 is viewed from the outdoor side. The pair of attachment pieces 63 are respectively formed with elongated holes 631 extending along the longitudinal direction of the flame shield member 6 and through which the screws Sc6 are inserted. The flame shield member 6 is fixed to the reinforcing member 5 with the screw Sc6 via a wall portion located at the boundary between the central hollow portion 218 and the inner peripheral hollow portion 210. That is, the flame shield member 6 is fixed to the reinforcing member 5 at both ends in the longitudinal direction.

The flame shield member 6 described above is configured to be elastically deformable due to its shape. More specifically, the flame shield member 6 has its center portion moved downward with respect to both ends in the longitudinal direction by its own weight, and can be bent in a convex shape toward the lower side. Further, the flame shield member 6 has a longitudinal center position CT (see FIG. 6) when the opening Op is closed by the external obstacle 3 and the internal obstacle 4. It is fixed to the reinforcing member 5 so as to face the door-side portion (summing portion) in the prospective direction.
Here, the flame shield member 6 has its lower end abutted against a prospective wall portion constituting a prospective surface on the lower side of the inner peripheral hollow portion 210, and its curvature due to its own weight is restricted. That is, when the flame shield member 6 is housed inside the inner peripheral hollow portion 210 (in a state where the central wall portion 214 (inner peripheral hollow portion 210) is not melted), the inside of the inner peripheral hollow portion 210 is inside. In FIG. 7, it is accommodated in a substantially linear posture (see the one-dot chain line in FIG. 7).

Further, on the indoor and outdoor plate surfaces of the flame barrier wall 61, there are provided first thermally expandable members (heated foam materials) 11 and 12 that expand when heated.
FIG. 6 is a diagram illustrating a positional relationship between the pair of first thermal expansion members 11 and 12. Specifically, FIG. 6A is a view of the flame shield member 6 as viewed from the indoor side. FIG. 6B is a view seen from the outdoor side, with the flame shield member 6 turned upside down.
Of the pair of first thermally expandable members 11, 12, the first thermally expandable member 11 is configured so that the outer panel 3 is closed on the outdoor plate surface of the flame barrier wall 61. 3 is provided at a position that opposes the upper portion of 3 in the prospective direction.
On the other hand, the first thermally expansible member 12 faces the prospective direction of the upper part of the inner impeller 4 when the inner impeller 4 is closed on the indoor plate surface of the flame barrier wall 61. It is provided in the position to do.
For this reason, a pair of 1st thermal expansion members 11 and 12 will be in the state which mutually overlapped in the prospective direction in the center part including the center position CT of the longitudinal direction in the flame-shielding member 6. FIG.

The joinery 1 according to the first embodiment described above has the following effects.
FIG. 7 is a diagram for explaining the effect of the first embodiment of the present invention.
In the joinery 1 according to the first embodiment, the reinforcing member 5 made of metal such as aluminum is provided inside the central hollow portion 218 and is fixed to the building frame. In addition, the metal flame shield member 6 such as aluminum is provided in the inner peripheral hollow portion 210, opposes the upper side portion of the outer shoji 3 and the inner shoji 4 in the expected direction, and is fixed to the reinforcing member 5. Is done. Furthermore, the 1st thermally expansible members 11 and 12 are provided in the surface which opposes the site | part of the flame shield member 6 above the outer obstacle 3 and the inner obstacle 4 in the prospective direction, respectively. For this reason, even if it is a case where it heats with a flame etc. and the upper frame 21 fuse | melts, the flame-shielding member 6, the outer shoji 3, and the inner shoji 4 are facing in the prospective direction. And the 1st thermal expansible members 11 and 12 expand | swell by heating, and the clearance gap between the flame-shielding member 6, the external obstacle 3 and the inner impeller 4 is obstruct | occluded by the said 1st thermal expansible members 11 and 12. Can do.
In particular, the flame shield member 6 is fixed to the reinforcing member 5 at both ends in the longitudinal direction. For this reason, in a state where the upper frame 21 (the central wall portion 214) is melted by being heated by a flame or the like, the flame shield member 6 is curved in a convex shape toward the lower side by its own weight (see two in FIG. 7). Dotted line). That is, in the upper part of the summoning portion, the area where the flame shield member 6 and the external obstacle 3 and the internal impingement element 4 face each other in the prospective direction becomes large. For this reason, when the first thermally expandable members 11 and 12 are expanded by heating, the gap between the flame shield member 6, the outer obstacle 3, and the inner obstacle 4 is formed in the upper portion of the summoned portion. 11 and 12 can be effectively blocked.
Therefore, when the upper frame 21 made of a synthetic resin is employed, even if it is exposed to a flame, a through-hole is not easily formed between the upper frame 21 and the shoji 3 and the inner shoji 4 at the top of the summoning portion. A fire prevention structure can be realized. Moreover, since it can comprise with the reinforcement member 5, the flame-shielding member 6, and the 1st thermally expansible members 11 and 12 as the said fire prevention structure, it becomes the number of parts suitable for the assembly workability | operativity of the fitting 1. FIG.
From the above, according to the joinery 1 according to the first embodiment, when the synthetic resin upper frame 21 is adopted, the fire prevention structure in which the through-hole is not easily formed even when exposed to the flame is realized. There is an effect that the number of parts of the fire prevention structure can be reduced and the assembly workability can be improved.

  Further, in the joinery 1 according to the first embodiment, the flame shield member 6 is fixed to the reinforcing member 5 so that the center position CT in the longitudinal direction faces the summing part of the outer shoji 3 and the inner shoji 4 in the prospective direction. Is done. For this reason, with the flame shield member 6 curved by its own weight, the area where the flame shield member 6 and the external obstacle 3 and the internal obstacle 4 face each other in the prospective direction is the largest in the upper part of the summoning portion. Can do. Therefore, when the first thermally expandable members 11 and 12 are expanded by heating, the gap between the flame shield member 6, the external obstacle 3, and the internal impeller 4 is formed in the upper portion of the summoned portion. , 12 can be blocked most effectively.

  Further, in the joinery 1 according to the first embodiment, the inner peripheral hollow portion 210 regulates bending due to its own weight in the flame shield member 6. That is, before the inner peripheral hollow portion 210 is melted by a flame or the like, the flame shield member 6 is accommodated in a substantially straight posture in which the curvature due to its own weight is restricted inside the inner peripheral hollow portion 210 ( A one-dot chain line in FIG. 7). On the other hand, when the inner peripheral hollow portion 210 is melted by a flame or the like, the restriction by the inner peripheral hollow portion 210 is released, and the flame shield member 6 is curved downwardly by its own weight (see FIG. 7). Two-dot chain line). For this reason, the dimension of the up-down direction of the inner periphery hollow part 210 can be made small compared with the structure accommodated in the inside of the inner periphery hollow part 210 in the state where the flame-shielding member 6 was curved beforehand. Therefore, the upper frame 21 can be reduced in size.

(Embodiment 2)
Next, a second embodiment of the present invention will be described.
In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted or simplified.
FIG. 8 is an enlarged vertical cross-sectional view of a main part of a fitting 1A according to Embodiment 2 of the present invention.
The joinery 1A according to the second embodiment has a second thermally expandable member (heated foam material) 13 between the reinforcing member 5 and the flame shield member 6 with respect to the joinery 1 described in the first embodiment. The only difference is the provision of.
Specifically, the second thermally expandable member 13 is made of the same material as the first thermally expandable members 11 and 12. The second thermally expandable member 13 is provided on the lower surface of the lower facing portion 51 of the reinforcing member 5 at a position facing the reinforcing piece 62 of the flame shield member 6.
The position where the second thermally expandable member 13 is provided is not limited to the position described above, and may be provided, for example, on the reinforcing piece 62 as long as it is between the reinforcing member 5 and the flame shield member 6.

According to the fitting 1A according to the second embodiment described above, the following effects can be obtained in addition to the same effects as those of the first embodiment.
In the joinery 1 </ b> A according to the second embodiment, a second thermally expandable member 13 is provided between the reinforcing member 5 and the flame shield member 6. For this reason, when the 2nd thermally expansible member 13 expand | swells by heating, the flame shield member 6 can be pushed down and the amount of curvature of the flame shield member 6 can be increased. That is, in the upper part of the summoned portion, the area where the flame shield member 6 and the external obstacle 3 and the internal obstacle 4 face each other in the prospective direction is further increased, and the flame shield member 6 and the first thermally expandable members 11 and 12 It is possible to more effectively close the gap between the external shoji 3 and the internal shoji 4. Further, the gap between the central portion in the longitudinal direction of the curved flame shield member 6 and the reinforcing member 5 can be closed by the second thermally expandable member 13.

(Other embodiments)
The embodiments for carrying out the present invention have been described so far, but the present invention should not be limited only by the above-described first and second embodiments.
In Embodiments 1 and 2 described above, the joinery according to the present invention is employed for the sliding window, but this is not a limitation. For example, a sliding window with three or more sliding screens sliding left and right, a double-sleeved sliding window, a drawing window, and an area inside the frame are divided by vertical bones, and one of the divided areas is a FIX window or wall. You may employ | adopt this invention for various fittings, such as a pieced window made.
In the first and second embodiments described above, any material may be adopted as the material of the reinforcing member 5 and the flame shield member 6 as long as the material is non-combustible or flame retardant.
In the first and second embodiments described above, a configuration in which the flame shield member 6 is curved in advance and accommodated in the inner peripheral hollow portion 210 may be employed.

  In Embodiments 1 and 2 described above, the flame shield member 6 has a structure that curves downwardly due to its own weight, but if the flame shield member 6 is a structure that can move downward, Other structures may be adopted. For example, both ends of the flame shield member 6 are supported by the reinforcing member 5 with stepped screws, and the flame shield member 6 as a whole moves downward according to the thermal expansion of the flame shield member 6. A structure may be adopted.

  1, 1A joinery, 3 external shoji (shoji), 4 inner shoji (shoji), 5 reinforcing member, 6 flame shield member, 11, 12 first thermally expansible member, 13 second thermally expansible member, 21 upper frame, 210 inner peripheral hollow portion (second hollow portion), 218 central hollow portion (first hollow portion), CT center position, Op opening

Claims (4)

A first hollow portion extending along an edge of the opening in the building, and a second hollow portion extending along the longitudinal direction of the first hollow portion, provided on a prospective surface on the lower side of the first hollow portion. A synthetic resin upper frame having a hollow portion;
A shoji that allows the upper part to face the second hollow part in the prospective direction and move along the longitudinal direction of the upper frame to open and close the opening,
A nonflammable or flame retardant reinforcing member that is provided inside the first hollow portion and is fixed to the building frame and reinforces the upper frame;
An incombustible or incombustible flame shielding member provided inside the second hollow portion, extending along a longitudinal direction of the second hollow portion and facing the upper portion in a prospective direction. ,
In the surface facing the upper part of the flame shield member in the prospective direction,
A first thermally expandable member that expands when heated;
The flame shield member is
A joinery that is supported by the reinforcing member and is movable downward. The flame shield member is
2. The joinery according to claim 1, wherein the reinforcing member is supported so that a center position in a longitudinal direction opposes a door-side portion of the shoji screen in a state in which the opening is closed. . The second hollow portion is
The prospective wall part which comprises the prospective surface of a lower side contact | abuts the lower end part of the said flame-shielding member, and the movement toward the downward side in the said flame-shielding member is controlled. Joinery. Between the reinforcing member and the flame shield member,
The joinery according to any one of claims 1 to 3, wherein a second thermally expandable member that expands when heated is provided.

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