JP7436618B2 - fittings - Google Patents

Description

The present invention relates to fittings, and more particularly to fire prevention measures for fittings that include secondary shoji screens between building materials such as frames and frames.

Some fittings have a secondary shoji for ventilation inside the frame that makes up the shoji. A secondary shoji has a secondary panel material supported between secondary building materials so as to be openable and closable, and is disposed, for example, at the top of the shoji. In this type of fittings, if the secondary shoji is opened, ventilation can be performed even when the shoji is closed, which is advantageous in terms of operability and crime prevention (for example, see Patent Document 1).

JP 2016-8451 Publication

By the way, modern fittings are often required to have high fire resistance. In the case of fittings that do not have a secondary shoji, for example, a thermally expandable member is placed between the stile and the face material that make up the shoji to improve fire protection. In other words, with this fitting, when the shoji is exposed to high temperatures, the thermally expandable member expands and closes the gap between the stile and the panel, creating a situation where flames can pass through the room both indoors and outdoors. will be prevented.

On the other hand, in order to improve the fire resistance of fittings equipped with secondary shoji, in addition to arranging a thermally expandable member between the stile and face material of the shoji, it is necessary to It is conceivable to arrange an auxiliary thermally expandable member also in between. With such fittings, it is possible to prevent a physical penetration from occurring between the secondary building material and the secondary surface material of the secondary shoji. However, in actual fittings, there is a concern that flames may occur on the non-heated side of the secondary shoji, and there is still room for improvement. That is, in a fitting provided with a secondary shoji, a space exists between the secondary building material and the stile of the shoji, and this space is in communication with the gap between the stile and the facing material. Therefore, for example, if flammable gas is generated from the facing material due to the fittings being exposed to high temperatures, it will reach the gap between the secondary building material and the frame of the shoji, and this flammable gas will further If it squirts out onto the heated surface, it may cause a flame.

Note that the above-mentioned problem is not limited to between the sash of a shoji and a sub-shoji, but can similarly occur in a FIX window in which a panel and a sub-shoji are arranged on the frame, for example.

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, an object of the present invention is to provide a fitting that is equipped with a secondary shoji and can improve fire protection.

In order to achieve the above object, the fittings according to the present invention include a frame and a shoji installed in the frame, and the shoji is provided with a face material and a ventilation unit inside the building material assembled around four times, The ventilation unit includes a sub-frame body and a sub-face member that is openably and closably supported inside the sub-frame body via a sub-lower frame that constitutes the sub-frame body, and constitutes the sub-frame body. The sub-upper frame is provided with abutting fins facing downward in the indoor side part and the outdoor side part, respectively, and each abutting fin part is provided with a seal between it and the sub-surface material. A sealing member is provided, and a latch and a latch receiver are provided between the secondary upper frame and the secondary surface material in a portion between the sealing members to maintain the secondary surface material in a closed state, A thermally expandable member is disposed on the surface of the sub-upper frame facing the latch of the sub-surface material, and a thermally-expandable member is disposed on the surface of the sub-bottom frame that faces the sub-surface material. It is characterized by being set up.

According to the present invention, when the fittings are exposed to high temperatures, the thermally expandable member expands, thereby closing the accommodation portion between the building material and the sub-building material. Therefore, even if flammable gas is generated from the facing material, this flammable gas will not reach the secondary shoji, and there will be no possibility of a situation where a flame will ignite on the non-heated surface side of the secondary shoji.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which looked at the fittings which are embodiments of this invention from the indoor side. FIG. 2 is a longitudinal sectional view of the fittings shown in FIG. 1; FIG. 2 is a cross-sectional view of the fittings shown in FIG. 1 cut away at the sub-shoji part. FIG. 2 is a cross-sectional view of the fitting shown in FIG. 1 cut away at a face material. FIG. 2 is an exploded cross-sectional view of the fittings shown in FIG. 1 with the secondary shoji removed from the inner shoji. This figure shows a secondary shoji that is applied to the fittings shown in FIG. 1, in which (a) is a view seen from the indoor side, and (b) is a view seen from the outdoor side. FIG. 7 is a longitudinal cross-sectional view of the secondary shoji shown in FIG. 6 with the secondary panel material placed in a closed position. FIG. 7 is a longitudinal cross-sectional view of the secondary shoji shown in FIG. 6 with the secondary panel material placed in an open position.

Hereinafter, preferred embodiments of fittings according to the present invention will be described in detail with reference to the accompanying drawings.
1 to 4 show fittings that are embodiments of the present invention. The fitting illustrated here is a so-called double-sliding window in which two shoji 20 and 30, an inner and an outer shoji, are disposed on a frame 10 so as to be slidable in the left-right direction. The frame body 10 is configured into a rectangular shape by framing an upper frame 11, a lower frame 12, and left and right vertical frames 13, 14 around the four sides.

The outer shoji 20 arranged on the outdoor side of the frame 10 has a rectangular double-glazed glass 25 arranged inside an upper stile 21, a lower stile 22, and left and right vertical stile 23, 24, which are assembled into four-frame frames. It was constructed by The inner shoji 30 arranged on the indoor side of the frame 10 has rectangular double-glazed glass (surface 35 and a ventilation unit (secondary shoji) 40 having a rectangular outer shape are arranged vertically adjacent to each other. The double-glazed glass 25 of the outer shoji 20 and the double-glazed glass 35 of the inner shoji 30 are each constructed by bonding a plurality of (for example, two) glass plates G to each other via a spacer member S.

These outer shoji 20 and inner shoji 30 have almost the same dimensions along the left and right sides, and are formed to dimensions that allow the frame 10 to be closed when the matching vertical frames 23 and 33 are arranged side by side with each other in the perspective direction. It has been done. This embodiment illustrates a fitting in which when the frame 10 is closed, the outer shoji 20 is arranged on the left side when viewed from the indoor side, and the inner shoji 30 is arranged on the right side when seen from the indoor side. However, the present invention is not necessarily limited to this, and a double-sliding window in which the inner shoji 30 and the outer shoji 20 are arranged with left and right sides reversed may be used.

Here, the above-mentioned prospective direction is a direction along the depth of the fittings, as shown by arrow A in the figure. A surface along the prospective direction may be referred to as a prospective surface. Further, in this embodiment, the term "finding direction" is also used for convenience. In the case of building materials that extend along the horizontal direction, such as the upper frame 11 and the lower frame 12, the sight direction is a direction along the top and bottom orthogonal to the sight direction. In the case of building materials that extend in the vertical direction, such as the vertical frames 13, 14, etc., the direction along the horizontal line orthogonal to the viewing direction is called the finding direction. A surface along the finding direction may be referred to as a finding surface.

Hereinafter, the configuration of the inner shoji 30 equipped with the ventilation unit 40 will be explained in detail, and the characteristic parts of the present invention will also be explained.

The upper stile 31, lower stile 32, and left and right vertical stile (building materials) 33, 34 that make up the inner shoji 30 are extruded shapes made of metal such as aluminum alloy, and are approximately uniform over the entire longitudinal length. It is configured to have a cross-sectional shape. As shown in FIGS. 2 and 5, these frames 31, 32, 33, and 34 have housing portions 31a, 32a, 33a, and 34a formed on their inner circumference facing surfaces, respectively. The accommodating parts 32a, 33a, 34a of the lower stile 32 and the left and right vertical stile 33, 34 are for accommodating the edges of the double-glazed glass 35 with the glazing channel B attached, and are mutually connected from the indoor side and the outdoor side. It is constructed between support fins 32b, 33b, and 34b that protrude to face each other.

The dimensions of the double-glazed glass 35 along the left and right sides are almost the same as the double-glazed glass 25 of the outer shoji 20, and the edges on both sides are housed in the housing parts 33a and 34a of the vertical frames 33 and 34, respectively. . The vertical dimensions of the double-glazed glass 35 are shorter than the double-glazed glass 25 of the outer shoji 20. Therefore, while the lower edge of the double-glazed glass 35 is accommodated in the housing portion 32a of the lower stile 32, there is a gap between the upper edge and the upper stile 31. Note that reference numeral 36 in FIG. 2 is a setting block that is interposed between the lower stile 32 and the end surface of the double-glazed glass 35 to position the double-glazed glass 35 with respect to the inner shoji 30.

In the housing portions 33a and 34a of the vertical frames 33 and 34, a heat foaming material C1 is disposed over the entire length along the respective lengths. The heated foam material C1 is a nonflammable or flame-retardant fireproof member that expands due to heat. As this type of heat-foamed material C1, for example, so-called expanded graphite containing thermally expandable graphite can be used.

As shown in FIGS. 5 to 8, the ventilation unit 40 includes a rectangular sub-frame body 410 and a sub-panel member 420 supported by the sub-frame body 410 in a state where the opening of the sub-frame body 410 is opened and closed. It is arranged in a rectangular area formed between the upper stile 31, the left and right vertical stile 33, 34, and the upper edge surface of the double-glazed glass 35.

The sub-frame body 410 is constructed by framing a sub-upper frame 411, a sub-lower frame 412, and left and right sub-vertical frames (sub-building materials) 413 around the four sides. The sub-upper frame 411, the sub-lower frame 412, and the left and right sub-vertical frames 413 are extruded shapes made of metal such as aluminum alloy, and are configured to have a substantially uniform cross-sectional shape over the entire longitudinal length. There is.

The sub-upper frame 411 has a flat upper frame base 411a that extends substantially horizontally along the viewing direction. An inner upper contact fin 411b extending downward is provided on the lower surface of the upper frame base 411a on the indoor side, and an edge portion on the lower surface of the upper frame base 411a on the outdoor side. An outer upper contact fin portion 411c extending downward is provided. The outer upper contact fin portion 411c has a larger protrusion dimension than the inner upper contact fin portion 411b, and its lower end edge is bent at a substantially right angle toward the indoor side. Seal members 415 and 416 are respectively attached to the facing surfaces of the inner upper abutment fin 411b and the outer upper abutment fin 411c that face the interior of the room. Moreover, two fitting upper fins 411d and 411e and an upper screw hole 411f are provided on the upper surface of the upper frame base 411a. The upper fitting fins 411d and 411e protrude upward from the upper surface of the upper frame base 411a. These two upper fitting fins 411d and 411e are configured such that the distance between their outer surfaces is such that they can fit into the housing portion 31a of the upper frame 31. The upper screw hole 411f is open at both left and right ends, and is formed between the two upper fitting fins 411d and 411e.

The sub-bottom frame 412 has a flat bottom frame base 412a that extends substantially horizontally along the viewing direction. Two engaging fins 412b extending downward are provided on the outdoor side edge and the indoor side edge of the lower frame base 412a, respectively. An inner trapezoidal fin portion 412c is provided at a location approximately in the middle of. The two engaging fins 412b constitute a sub-frame accommodating part 412d having the same dimensions as the accommodating part 31a of the upper stile 31 between them and the lower frame base 412a, and protrude from both side edges of the lower frame base 412a, respectively. It is set up so that The inner trapezoidal fin portion 412c protrudes upward from the upper surface of the lower frame base portion 412a, then bends at a substantially right angle, and extends substantially horizontally toward the indoor side. A lower screw hole 412e is provided at the bent inner corner of the inner trapezoidal fin 412c, and a seal member 417 is attached to the extending edge of the inner trapezoidal fin 412c. The lower screw hole 412e, like the upper screw hole 411f, is configured so that both left and right ends are open. Furthermore, a support fin portion 412f is provided on a finding surface of the engagement fin portion 412b provided on the indoor side facing the interior of the room. The support fin portion 412f has a flat plate shape extending substantially horizontally toward the indoor side from the engagement fin portion 412b. A hinge shaft element 412g that constitutes a profile hinge is provided on the upper surface of the support fin 412f and a sub-surface member 420, which will be described later.

The left and right sub-vertical frames 413 have a mutually symmetrical configuration. In this embodiment, the sub vertical frame 413 is provided with an inner vertical contact fin 413b and an outer vertical contact fin 413c on a flat vertical frame base 413a that extends substantially vertically along the viewing direction. is configured. The inner vertical contact fin portion 413b extends inward from a portion of the mutually opposing inner surfaces of the vertical frame base 413a that is the indoor side. The outer vertical contact fins 413c extend inward from the edges of the vertical frame bases 413a facing toward the outdoor side, and protrude more than the inner vertical contact fins 413b. The dimensions are large. Seal members 418 and 419 are attached to the inner vertical contact fin portions 413b and the outer vertical contact fin portions 413c, respectively, on the facing surfaces facing into the room. Furthermore, two fitting vertical fins 413d and 413e are provided on the outer surface of the vertical frame base 413a. The fitting vertical fins 413d and 413e protrude outward from the outer surface of the vertical frame base 413a. These two fitting vertical fins 413d and 413e are configured such that the distance between their outer surfaces is such that they can be fitted into the accommodating portions 33a and 34a of the vertical frames 33 and 34.

These sub-vertical frames 413 have screw insertion holes (not shown) in portions corresponding to the upper screw holes 411f of the sub-upper frame 411 and the lower screw holes 412e of the sub-lower frame 412, respectively. By screwing the screws 430 into the upper screw hole 411f and the lower screw hole 412e through the screw holes 411f and 412e, a secondary frame body 410 is formed together with the secondary upper frame 411 and the secondary lower frame 412. In the state in which the sub frame body 410 is configured, a seal member 417 provided on the inner trapezoidal fin portion 412c of the sub lower frame 412 and a seal member 415 provided on the inner upper contact fin portion 411b of the sub upper frame 411. , and a sealing member 418 provided on the inner vertical contact fin portion 413b of the sub-vertical frame 413 are arranged on the same vertical plane. Further, the sealing member 419 provided on the outer vertical contact fin 413c and the sealing member 416 provided on the outer upper contact fin 411c of the sub-upper frame 411 are arranged on the same vertical plane.

As shown in FIGS. 2 and 3, the sub-frame body 410 having the above-described configuration has fitting upper fins 411d and 411e provided on the sub-upper frame 411 fitted into the housing portion 31a of the upper frame 31, and It is attached to the upper part of the inner shoji 30 by fitting the fitting vertical fins 413d and 413e provided on the sub-vertical frame 413 into the accommodating parts 33a and 34a of the vertical frames 33 and 34, respectively. In this state, the upper edge of the double-glazed glass 35 is housed in the sub-frame accommodating part 412d formed by the engagement fin 412b of the sub-bottom frame 412, and the upper edge of the double-glazed glass 35 is connected to the upper frame 31 by the ventilation unit 40. The gap between the layered glass 35 will be closed. Although not clearly shown in the figure, the engagement fins 412b that protrude from both sides of the lower frame base 412a in the sub-lower frame 412 are inserted into the housing parts 33a and 34a through the notches provided in the vertical frames 33 and 34, respectively. The sub-frame body 410 functions to prevent vertical movement of the sub-frame body 410 relative to the vertical frames 33 and 34. Therefore, the double-glazed glass 35 of the inner shoji 30 is in a state where its four circumferences are supported by the sub-bottom frame 412 of the sub-frame body 410, the bottom stile 32 of the frame body 10, and the left and right vertical frames 33, 34.

As shown in FIGS. 5 to 8, the secondary surface material 420 is constructed by attaching side plates 422 to both ends of a surface material base 421, respectively.
The face plate base 421 is formed by integrally molding a face plate part 421a having a rectangular flat plate shape and a square tube part 421b provided on the surface of the face plate part 421a facing outdoors.

The face plate portion 421a has a size that allows it to be placed in a rectangular opening formed by the sub-upper frame 411, the sub-lower frame 412, and the left and right sub-vertical frames 413. More specifically, the upper and lower sides of the face plate portion 421a are formed by a seal member 415 provided on the inner upper contact fin portion 411b of the sub-upper frame 411 and a seal provided on the inner plate-like fin portion 412c of the sub-lower frame 412. The dimensions are set such that it can cover the member 417 at the same time. The left and right sides of the face plate portion 421a are formed to have a dimension smaller than the distance between the outer vertical contact fin portions 413c of the sub-vertical frame 413. A hinge receiving element 421c is provided at the lower edge of this face plate portion 421a. The hinge receiving element 421c constitutes a profile hinge between the hinge shaft element 412g of the sub-lower frame 412 mentioned above. That is, the hinge receiving element 421c rotatably supports the face plate portion 421a with respect to the sub-lower frame 412 by engaging with the hinge shaft element 412g of the sub-lower frame 412. In this embodiment, the profile hinge is configured such that the face plate portion 421a is rotatable about a hinge axis that extends left and right along the horizontal direction. Thereby, the face plate portion 421a can be moved to a closed position along the vertical direction as shown in FIG. 7, and an open position where the upper edge protrudes toward the indoor side as shown in FIG. Become. When the face plate portion 421a is placed in the closed position, the seal member 415 of the inner upper abutting fin portion 411b and the seal member 417 of the inner trapezoidal fin portion 412c each close the surface of the face plate portion 421a facing the outdoors. It will be in a state where it is pressed. On the other hand, when the face plate part 421a is placed in the open position, the seal member 415 of the inner upper contact fin part 411b and the seal member 417 of the inner trapezoidal fin part 412c are separated from the face plate part 421a.

In addition, the code|symbol 440 in FIG. 8 is a link mechanism provided between the sub vertical frame 413 of the sub frame body 410, and the sub panel material 420. This link mechanism 440 limits the opening angle of the sub-face material 420 with respect to the sub-frame body 410 by bringing a slider 441 provided on the sub-frame body 410 into contact with a stopper member 442. Further, reference numeral 450 in FIG. 7 is a latch that maintains the secondary panel 420 in the closed position by engaging with the secondary frame 410 when the secondary panel 420 is placed in the closed position. That is, in order to move the secondary panel material 420 placed in the closed position to the open position, it is necessary to release the latch 450. Note that when the secondary panel material 420 placed in the open position is moved to the closed position, the latch 450 is automatically engaged.

As shown in FIGS. 5 to 8, the square tube portion 421b has a lower outer circumferential surface facing the inner trapezoidal fin portion 412c of the sub-lower frame 412 when the face plate portion 421a is placed in the closed position, and is located on the outdoor side. The upper corner portion is configured to abut against a sealing member 416 provided on the outer upper contact fin portion 411c of the sub-upper frame 411. As is clear from the figure, screw holes 421d are provided in the upper and lower portions of the rectangular tube portion 421b, respectively. The screw hole 421d is open at both left and right ends. The upper screw hole 421d is provided on the inner circumferential lower surface of the rectangular tube portion 421b, and the lower screw hole 421d is provided on the outer circumferential lower surface of the rectangular tube portion 421b.

The side plates 422 attached to both ends of the face material base 421 have a mutually symmetrical configuration. In this embodiment, a side plate base 422a has a flat plate shape large enough to cover the opening of the square tube part 421b, and a face plate extension bent outward at a substantially right angle from an edge located on the indoor side of the side plate base 422a. The side plate 422 has a portion 422b.

The side plate base 422a has screw insertion holes (not shown) at portions corresponding to the screw holes 421d of the square tube portion 421b. The side plate 422 is attached to both ends of the panel base 421 by screwing screws 431 into screw holes 421d through screw insertion holes in the side plate base 422a. The face plate extension parts 422b are arranged on both sides of the face plate part 421a on an extension of the face plate part 421a, and are able to simultaneously contact the seal member 418 provided on the inner vertical contact fin part 413b of the sub-vertical frame 413. It is formed to the dimensions that are possible.

As is clear from the figure, a heating foaming material (subthermal expandable member) C2 is provided around the four sides between the sub frame body 410 and the sub surface material 420. The heated foamed material C2 is of the same type as the heated foamed material C1 provided in the vertical frames 33 and 34. In this embodiment, as shown in FIG. 5 and FIG. A heat foaming material C2 is disposed on the upper surface facing the side plate 420, and a heat foaming material C2 is disposed on the surface of the face plate extension 422b of the side plate 422 facing outdoors. A latch receiver 451 of the latch 450 described above is provided on the lower surface of the upper frame base 411a of the secondary upper frame 411 facing the secondary surface material 420. Therefore, on the lower surface of the upper frame base 411a, a heated foaming material C2 is arranged on both sides so as to be separated by the latch receiver 451, and a heated foaming material C2 is arranged on the surface of the latch receiver 451. There is. Further, the heated foam material C2 disposed on the face plate extension 422b of the side plate 422 can be touched by hand when the secondary face member 420 is moved to the open position. Therefore, the heating and foaming material C2 of the face plate extension 422b is restricted from peeling off from the face plate extension 422b by the pressing member 460. The holding member 460 is formed by integrally molding a flat mounting plate portion 460a and a holding plate portion 460b bent in a substantially right angle direction from one end edge of the mounting plate portion 460a, and the holding plate portion 460b is heated and foamed. It is attached to the outer surface of the side plate base 422a via the attachment plate 460a while in contact with the surface of the material C2. In this embodiment, in particular, the screws 431 that attach the side plate 422 to the face material base 421 are used to attach the presser member 460 to the side plate base 422a.

Furthermore, in this ventilation unit 40, a heating foam material (thermally expandable member) C3 is disposed at a portion of the vertical frame base 413a of the sub-vertical frame 413 that faces the housing portions 33a, 34a of the vertical frames 33, 34. At the same time, a heated foaming material C3 is also disposed on the lower surface of the lower frame base 412a of the secondary lower frame 412 facing the secondary frame accommodating portion 412d. These heat-foamed materials C3 are also of the same type as the heat-foamed materials C1 provided in the vertical frames 33 and 34. As described above, the heating foam material C1 is disposed in the housing portions 33a, 34a of the vertical frames 33, 34 over the entire length thereof. Therefore, between the sub-vertical frame 413 and the vertical frames 33, 34, the heated foam material C1 provided in the vertical frames 33, 34 and the heated foamed material C3 provided in the sub-vertical frame 413 are disposed. It turns out.

In addition, in this fitting, as shown in FIG. 2, the heated foam material C4 is also provided in the housing part 31a of the upper stile 31, and as shown in FIG. Also in the hollow part 33c of 33, a heating foaming material C5 is arranged together with the reinforcing material D.

In the inner shoji 30 configured as described above, when the face plate portion 421a of the secondary panel material 420 is placed in the closed position, the seal member 415 of the inner upper contact fin portion 411b and the seal member 417 of the inner trapezoidal fin portion 412c , the seal members 418 of the inner vertical contact fins 413b are in contact with the face plate portions 421a, respectively. Therefore, when the face plate portion 421a is placed in the closed position, ventilation through the sub-frame body 410 is blocked, and no ventilation is performed through the ventilation unit 40.

On the other hand, when the face plate portion 421a is placed in the open position, the seal member 415 of the inner upper abutment fin portion 411b, the seal member 417 of the inner trapezoidal fin portion 412c, and the seal member of the inner vertical abutment fin portion 413b. 418 is separated from the face plate portion 421a, and the sub frame body 410 is in an open state. As a result, even when the frame body 10 is closed by the shoji 20, 30, if the latch 450 is released and the face plate part 421a of the sub-face material 420 is moved to the open position, the room will be ventilated via the ventilation unit 40. It becomes possible to do this.

Moreover, according to the above-mentioned fittings, the heated foam material C2 is provided around the four circumferences between the sub-frame body 410 and the sub-face material 420. Therefore, when the fittings are exposed to high temperatures in the event of a fire, etc., the heated foam material C2 expands and the four circumferences between the sub-frame body 410 and the sub-face material 420 are closed. Thereby, even if the fittings are exposed to high temperatures, there is no risk that a through hole will be formed in the ventilation unit 40 that penetrates the interior and exterior.

Furthermore, in a state where the fittings are exposed to high temperatures, the heated foamed material C1 provided in the housing portions 33a and 34a of the vertical frames 33 and 34 and the heated foamed material C3 provided in the vertical frame base 413a of the sub vertical frame 413 expand. As a result, the portions of the vertical frames 33, 34 in the housing portions 33a, 34a facing the sub-vertical frame 413 are reliably closed.

Therefore, when the double-glazed glass 35 is exposed to high temperatures, flammable gas is generated from the spacer member S, for example, and the gaps between the housing parts 33a, 34a of the vertical frames 33, 34 and the double-glazed glass 35 are completely closed. Even if the double-glazed glass 35 is not blocked, flammable gas generated from the double-glazed glass 35 will not reach between the vertical frames 33, 34 and the sub-vertical frame 413. In addition, in the above-mentioned fittings, since the heating foam material C3 is also disposed at the bottom frame base 412a of the sub-bottom frame 412, the sub-frame accommodating portion 412d will also be closed when exposed to high temperatures. , it is possible to reliably prevent flammable gas from the double-glazed glass 35 from reaching between the vertical frames 33, 34 and the sub-vertical frame 413. As a result, flammable gas will not be ejected from the ventilation unit 40, and there will be no possibility of a situation where flames will occur on the non-heated surface opposite to the heated surface.

In the above-mentioned embodiment, double-sliding windows are exemplified as fittings, but the shoji may open and close outside the plane of the frame like a casement window, or it may be a case like a fixed window. It is also possible to apply the method in the same way even to shoji screens and panels that are fixed to building materials. In addition, although a ventilation unit in which the secondary panel material is arranged so as to be openable and closable with respect to the secondary frame body is shown as an example of a secondary shoji, the ventilation unit is not necessarily limited to this, and may be placed between two building materials. However, it may be anything else. In this case, it is not necessarily arranged between building materials along the vertical direction, but may be arranged between building materials along the left-right direction. Further, the secondary panel material 420 is exemplified as one constructed by attaching side plates 422 to both ends of the panel base portion 421, but is not necessarily limited to this, and may be made of, for example, double-glazed glass or other But it doesn't matter. Furthermore, although the double-glazed glass 35 is illustrated as a facing material, it is not necessarily limited to this, and for example, a panel that does not have translucency may be used as a facing material.

Furthermore, in the above-described embodiment, the heating foam material C1 is disposed over the entire length of the housing parts 33a and 34a of the vertical frames 33 and 34, which is more preferable in terms of fire prevention. However, the present invention is not necessarily limited to this, and it is sufficient that the thermally expandable member is disposed only in the portion facing the sub-building material in the building material storage section. In this case, in the above-described embodiment, the thermally expandable member is provided as a secondary building material, so it is possible to use the same building material for internal shoji with secondary shoji and internal shoji without secondary shoji. becomes. However, the thermally expandable member may also be attached to a building material.

30 Internal shoji screen, 33, 34 Vertical stile, 33a, 34a Storage part, 35 Double-glazed glass, 40 Ventilation unit, 410 Sub-frame body, 413 Sub-vertical frame, 420 Sub-panel material, 460 Pressing member, C2 Heat-foamed material, C3 heated foam material

Claims (1)

comprising a frame and a shoji installed in the frame,
The shoji has a face material and a ventilation unit inside the building material assembled around four times,
The ventilation unit includes a sub-frame body and a sub-panel member that is openably and closably supported inside the sub-frame body via a sub-lower frame that constitutes the sub-frame body,
The sub-upper frame constituting the sub-frame body is provided with contact fin portions facing downward at the indoor side portion and the outdoor side portion, respectively, and each contact fin portion is provided with the sub surface. A sealing member is provided to seal between the material and the material.
A latch and a latch receiver are provided between the secondary upper frame and the secondary surface material in a portion between the sealing members to maintain the secondary surface material in a closed state,
A thermally expandable member is disposed in the secondary upper frame on a surface of the secondary surface material facing the latch,
A fitting characterized in that a thermally expandable member is disposed on a surface of the secondary lower frame that faces the secondary surface material.

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