Opening device and window device

Abstract

To provide an opening device and a window device which are capable of securing specified fireproof performance while securing aesthetic appearance quality of an outer window.SOLUTION: An opening device, which is installed as an inner window on an indoor side of an outer window facing an outdoor side of a building, includes a frame body having an upper frame, a lower frame, and left and right vertical frames, and a surface material having heat resistance and supported by an opening of the frame body, in which at least the upper frame has an outer depth surface connected to a skeleton member of the building or a depth surface of a window frame of the outer window, and a first thermally expandable member that expands when heated is applied between the outer depth surface and the depth surface.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to an opening device and a window device installed as an inner window of an outer window such as a curtain wall.

Background Art

[0002] For example, Patent Document 1 discloses a configuration having a fireproof structure in a curtain wall constituting an outer wall of a building. In this configuration, the structure of the curtain wall is made different between a portion where fire protection facilities are required and a portion where they are not required, thereby constructing fire protection measures in a portion where there is a risk of fire spread.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The curtain wall of the above Patent Document 1 An opening device like this can achieve high versatility and reduce manufacturing costs if it can accommodate different installation conditions.

[0005] The present invention has been made in consideration of the problems of the above prior art, Achieve high versatility and reduce manufacturing costs and an object thereof is to provide an opening device and a window device that can achieve the following.

Means for Solving the Problems

[0006] The opening device according to the first aspect of the present invention is an opening device installed as an inner window on the indoor side of an outer window facing the outdoor of a building, and includes a frame body having an upper frame, a lower frame, and left and right vertical frames, It includes a facing material supported by the opening of the frame body. The left and right vertical frames are provided on their outer prospective surfaces and have a first attachment portion that can be directly connected to a part of the building's structural member by screws, and a second attachment portion provided on their outdoor-facing surfaces that can be directly connected to a different part of the building's structural member by screws. The left and right vertical frames are connected to the structural member by selectively using one of the first attachment portion and the second attachment portion. characterized by the following.

[0007] The window device according to the second aspect of the present invention An opening device is a window device installed as an inner window of an outer window facing the outside of a building. The outer window includes an outer window frame having an upper frame portion, a lower frame portion, and left and right vertical frame portions, a vertical member standing between the upper frame portion and the lower frame portion, and an outer window facing material supported by the outer window frame and the vertical member. The outer side prospective surfaces of the upper frame and the lower frame are connected to the prospective surfaces of the structural member or the outer window frame. The left and right vertical frames are connected to the structural member or the outer window frame using the first attachment portion or the second attachment portion. is characterized by the following.

Effects of the Invention

[0008] According to the present invention, while ensuring the appearance quality, a predetermined fireproof performance can be ensured.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0010] Hereinafter, preferred embodiments of the opening device and the window device according to the present invention will be given and described in detail with reference to the accompanying drawings.

[0011] First, the overall configuration of the opening device 10 will be described. As shown in FIGS. 1 and 2, the opening device 10 includes a frame body 12, a facing material 14, and a pressing edge 16. The opening device 10 is an inner window as a fire protection facility installed on the indoor side of a curtain wall 18 which is an outer window facing the outdoor of a building (see FIGS. 3 to 8).

[0012] The frame body 12 forms a rectangular opening 12e by forming a four-sided frame assembly with an upper frame 12a, a lower frame 12b, and left and right vertical frames 12c and 12d. Each of the frames 12a to 12d is an extruded profile made of a metal material containing aluminum. The frame body 12 has, for example, a vertical-lap structure in which the upper frame 12a and the lower frame 12b are joined to the left and right vertical frames 12c and 12d in a nested form. In the frame body 12 of the present embodiment, the cross-sectional shapes of the upper frame 12a and the lower frame 12b are the same, and the cross-sectional shapes of the left and right vertical frames 12c and 12d are the same (see FIGS. 1 and 2). Each of the frames 12a to 12d may be a profile having the same or different cross-sectional shapes.

[0013] In the present application, the prospective direction refers to the indoor-outdoor direction of the opening device 10 and the curtain wall 18, that is, the direction from the indoor side to the outdoor side or the reverse direction (the direction indicated by the arrow Z in the figure). The prospective plane refers to a plane extending along the prospective direction. The finding direction is a direction orthogonal to the prospective direction. In the case of a vertically long vertical frame 12c or the like, it refers to the left-right direction orthogonal to its longitudinal direction (the direction indicated by the arrow X in the figure). In the case of a horizontally long upper frame 12a or the like, it refers to the up-down direction orthogonal to its longitudinal direction (the direction indicated by the arrow Y in the figure). The finding plane refers to a plane along the finding direction. The inside of the frame member refers to, for example, the inner part of the frame body 12 (the opening 12e). The outside of the frame member refers to, for example, the outer part of the frame body 12 fixed to the building's structural member. In each figure, the outdoor side of the opening device 10 is shown as (outer), and the indoor side is shown as (inner).

[0014] Each of the frames 12a to 12d has a wall portion 20 extending in the indoor-outdoor direction and an outdoor finding piece 21 provided at the outdoor end of the wall portion 20, and has a substantially L-shaped cross section.

[0015] The wall portions 20 of each of the frames 12a to 12d have a first airtight material pocket 22 substantially at the center in the expected direction of the outer expected surface 20a. The first airtight material pocket 22 opens to the outside of the frame and can accommodate a first airtight material 23. The first airtight material 23 is a component such as rubber or resin having a substantially bolt shape extending in the longitudinal direction of each of the frames 12a to 12d and having flexibility. The wall portion 20 has a pocket portion 24 at the indoor-side end of the inner expected surface 20b. The pocket portion 24 opens to the inside of the frame and can accommodate a pressing edge 16. The wall portion 20 serves as the bottom wall portion of an opening groove 26 in which the edge portion of the facing material 14 is accommodated and arranged.

[0016] A first attachment portion 25a is provided on the wall portion 20 of each of the frames 12a to 12d. The first attachment portion 25a is used when attaching the outer expected surface 20a of the frame body 12 to a building structural member. The first attachment portion 25a includes a first attachment hole 20c through which a screw 27 is inserted. The first attachment holes 20c are formed at appropriate intervals at a plurality of positions in the longitudinal direction of the wall portion 20. The first attachment holes 20c may be formed in advance at the factory or may be formed at the construction site as needed.

[0017] A plurality of protruding pieces 20d are provided on the outer expected surface 20a of each of the frames 12a to 12d. Each protruding piece 20d protrudes from the outer expected surface 20a in the direction outside the frame at the same height and is arranged in the expected direction. The first airtight material pocket 22 is formed between a pair of adjacent protruding pieces 20d, 20d near the center.

[0018] A plurality of screw holes 20e are provided on the inner expected surfaces 20b of the upper frame 12a and the lower frame 12b which are horizontal frames (see FIG. 1). The screw holes 20e are arranged in the expected direction on the inner expected surface 20b. Each screw hole 20e is screwed with a screw 33 (see FIG. 2) passing through the wall portions 20 of the vertical frames 12c and 12d, whereby the frames 12a and 12b and the frames 12c and 12d are fastened.

[0019] The outdoor locating pieces 21 of the respective frames 12a to 12d protrude inward from the wall portion 20 and form the outdoor locating surfaces of the respective frames 12a to 12d. In the present embodiment, an example is shown in which the protruding lengths of the outdoor locating pieces 21 of the upper frame 12a and the lower frame 12b are different from those of the outdoor locating pieces 21 of the vertical frames 12c and 12d, but they may be of the same length. The outdoor locating piece 21 has a second airtight material pocket 28 at its tip. The second airtight material pocket 28 opens to the inside of the frame, and the second airtight material 29 can be installed therein. The second airtight material 29 is a flexible component such as rubber or resin having a substantially mushroom-shaped cross section extending in the longitudinal direction of each of the frames 12a to 12d. The second airtight material 29 has an outdoor airtight portion 29a extending to the outdoor side of the outdoor locating piece 21 and an indoor airtight portion 29b extending to the indoor side of the outdoor locating piece 21. The outdoor locating piece 21 serves as the outdoor side wall portion of the opening groove 26.

[0020] The outdoor locating pieces 21 of the vertical frames 12c and 12d are provided with second attachment portions 25b. The second attachment portions 25b are used when attaching the outdoor locating surface (outdoor locating piece 21) of the frame body 12 to the building's structural member. The second attachment portions 25b are formed at a plurality of positions in the longitudinal direction of the outdoor locating piece 21 and include second attachment holes 21a through which screws 27 are inserted. The second attachment holes 21a are used when attaching the outdoor locating surface of the vertical frames 12c and 12d to the structural member using the second attachment portions 25b. The second attachment holes 21a may be formed in advance at the factory or may be formed at the construction site as needed.

[0021] Each of the frames 12a to 12d is an extruded aluminum profile subjected to a predetermined surface treatment. This surface treatment includes, for example, a composite coating treatment of anodizing and electrodeposition coating. Further, each of the frames 12a to 12d is given a predetermined color such as silver, brown, or black by, for example, an alternating current electrolytic coloring method.

[0022] The facing material 14 is inserted into the opening 12e of the frame body 12 from the indoor side. The facing material 14 is a plate material of transparent heat-resistant tempered glass, and its four sides are surrounded by a frame body 30. The facing material 14 may also be a panel material formed of wire mesh glass, resin, or the like. The facing material 14 only needs to be formed of a material having a predetermined heat resistance. The space between the frame body 30 and the frame body 12 is airtight by the indoor-side airtight portion 29b of the second airtight material 29.

[0023] The frame body 30 has an upper frame 30a, a lower frame 30b, and left and right vertical frames 30c, 30d, and is an edge material that covers the four peripheral end faces of the facing material 14. Each of the frames 30a to 30d is an extruded shape made of a metal material containing aluminum. The frame body 30 has a vertical-lap structure in which the upper frame 30a and the lower frame 30b are joined to the left and right vertical frames 30c, 30d in a seal-box form. In the configuration example shown in FIGS. 1 and 2, the upper frame 30a and the lower frame 30b, which are horizontal frames, have a cross-sectional shape that combines a hollow portion and a U shape, and the left and right vertical frames 30c, 30d have a U-shaped cross-sectional shape. Each of the frames 30a to 30d may be a shaped material having the same or different cross-sectional shapes.

[0024] Each of the frames 30a to 30d has an opening groove 30e that opens inward. The opening groove 30e is a portion that holds the edge of the facing material 14. The opening width (prospective direction width) of the opening groove 30e is set to a dimension slightly smaller than the plate thickness of the facing material 14. The facing material 14 can be smoothly inserted into the opening groove 30e with a smaller opening width than its plate thickness, starting with the R shape at the tip. At this time, the edge of the facing material 14 is held in the opening groove 30e via a gasket having a U-shaped cross section formed of rubber or resin. Since the plate thickness of the facing material 14 is larger than the opening width of the opening groove 30e, the opening device 10 can suppress the dropping of the facing material 14 from the opening groove 30e even when the gasket burns out during a fire.

[0025] The edge trim 16 is attached to the frame body 12 from the indoor side. The edge trim 16 holds the indoor side finding surface 30f of the frame body 30 of the facing material 14 on its outdoor side finding surface. Thereby, the edge trim 16 constitutes the indoor side wall portion of the opening groove 26. The outdoor side finding surface 30g of the facing material 14 is held by the outdoor side finding piece 21 of the frame body 12. At this time, the outdoor side finding surfaces 30g of the respective frames 30a to 30d are in close contact with the outdoor side airtight portion 29a of the second airtight material 29, thereby airtightening the inside and outside of the facing material 14.

[0026] The edge trim 16 has an upper edge member 16a, a lower edge member 16b, and left and right vertical edge members 16c and 16d. Each of the edge members 16a to 16b is an extruded profile made of a metal material containing aluminum. In the configuration example shown in FIGS. 1 and 2, the upper edge member 16a and the lower edge member 16b have a cross-sectional shape combining a hollow portion and a U-shape, and the left and right vertical edge members 16c and 16d have a U-shaped cross-sectional shape. Each of the edge members 16a to 16d may be a profile having the same or different cross-sectional shapes. A pair of claw portions 16e are provided on the outer prospect surfaces of the respective edge members 16a to 16d in the prospect direction protruding outward from the frame. Each of the edge members 16a to 16d has its respective claw portion 16e engaged with the pocket portion 24 of each frame 12a to 12d. Thereby, each of the edge members 16a to 16d is detachably attached to each of the frames 12a to 12d.

[0027] The edge trim 16 covers the pocket portion 24 from the indoor side and improves the appearance quality of the opening device 10. Since the edge trim 16 is housed inside the frame of the frame body 12, it does not protrude to the indoor side of the opening device 10, and a higher appearance quality can be obtained.

[0028] As shown in FIGS. 1 and 2, the opening device 10 of the present embodiment is provided with thermally expandable members 32 at various locations.

[0029] In this embodiment, the thermally expandable member 32 is provided on the outer prospective surface 20a of each of the frames 12a to 12d, the inner prospective surface 20b of the vertical frames 12c and 12d, and the outer prospective surface of each of the frames 30a to 30d. The thermally expandable member 32 is a heat-expandable foam material formed of graphite or the like that expands when heated. The thermally expandable member 32 is attached so as to extend along the longitudinal direction of each member. As a result, when the aluminum frame 12 warps or deforms during a fire, the thermally expandable member 32 disposed between the frame 12 and the body member and between the frame 12 and the facing material 14 expands. Thereby, the opening device 10 blocks the space between the frame 12 and the body member and between the frame 12 and the facing material 14 with the expanded thermally expandable member 32, suppressing the formation of through holes that serve as passageways for flames and smoke in the indoor-outdoor direction inside and outside the frame of the frame 12.

[0030] On the outer prospective surface 20a of each of the frames 12a to 12d, a first airtight material pocket 22 for mounting the first airtight material 23 is provided approximately at the center in the prospective direction, and screws 27 are provided on the outdoor side thereof. Therefore, the thermally expandable member 32 is provided at a position closer to the indoor side than the center in the prospective direction of the outer prospective surface 20a, and in this embodiment, at the indoor-side end of the outer prospective surface 20a. The thermally expandable member 32 may be provided at the center of the outer prospective surface 20a or closer to the outdoor side, or a plurality of sheets may be arranged side by side in the prospective direction.

[0031] Incidentally, when the frame 12 is heated by a fire or the like, the upper frame 12a is most likely to reach the highest temperature. For this reason, it is particularly preferable to install the thermally expandable member 32 on the outer prospective surface 20a of the upper frame 12a. On the other hand, since the lower frame 12b is less likely to reach a higher temperature than the upper frame 12a, the thermally expandable member 32 on the outer prospective surface 20a may be omitted. In the case of this embodiment, two types of fits, an exposed arrangement and a concealed arrangement, which will be described later, are assumed for the vertical frames 12c and 12d. Therefore, although details will be described later, it is desirable to provide the thermally expandable member 32 on the outer prospective surface 20a when the vertical frames 12c and 12d are used at least in the exposed arrangement (see FIGS. 7 and 8).

[0032] Next, the mounting structure of the opening device will be described. The opening device 10 of the present embodiment is constructed by either one of two mounting structures (the first and second mounting structures) according to the specifications of the building and the demands of the user. Since the opening device 10 has a fireproof structure, it is appropriately installed at a position where there is a possibility of fire spread as the inner window of the curtain wall 18 which is an outer window with a non-fireproof specification. Since a plurality of units of the curtain wall 18 are arranged in parallel left and right, the opening devices 10 are also constructed side by side as needed.

[0033] Prior to the description of each mounting structure, the peripheral members that support the opening device 10 will be described. As shown in FIGS. 3 to 6, the building 42 has a configuration in which the opening device 10, which is an inner window, is installed on the indoor side of the curtain wall 18, which is an outer window. The curtain wall 18 has a configuration in which the four peripheries of the two-layer facing materials 18a and 18b are held by the upper, lower, left, and right outer window frames 43 and the mullions 48. The outer window frames 43 and the mullions 48 are window frames fixed to the building body 42a such as the wall of the building 42 using, for example, fasteners 44. The outer window frame 43 is an extruded profile made of a metal material containing aluminum. The outer window frame 43 is subjected to the same or similar surface treatment as each of the above-described frames 12a to 12d.

[0034] Each of the frames 12a to 12d is attached to the base material 46 fixed to the building body 42a and the mullion 48 connected to the outer window frame 43. The base material 46 is a sheet metal member made of, for example, steel or stainless steel. The base material 46 is fixed to the building body 42a and is a building body member that relatively fixes the frame body 12 to the building body 42a. The mullion 48 is an extruded profile made of a metal material containing aluminum, for example. The mullion 48 is a vertical member that partitions between the units of the curtain wall 18 arranged side by side left and right. The mullion 48 stands between the upper and lower frame portions 43a and 43b and is connected to the frame portions 43a and 43b, and is a building body member that relatively fixes the frame body 12 to the building body 42a.

[0035] As shown in FIGS. 3 to 5, when each of the frames 12a to 12d is fixed to the base material 46, a frame member (serving board) 50 is sandwiched between the frame and the base material 46 for fixation. The frame member 50 is a decorative material that frames the four circumferences on the indoor side of the opening device 10, and is, for example, an extruded profile made of a metal material containing aluminum. The frame member 50 is fastened together with the frame body 12 to the base material 46 using screws 27. The vertical posts 48 and the frame member 50 are also subjected to the same or similar surface treatment as the above-described frames 12a to 12d.

[0036] Next, the first mounting structure will be described. In the first mounting structure, the upper frame 12a and the lower frame 12b are arranged in an exposed manner, and the vertical frames 12c and 12d are arranged in a concealed manner. The upper frame 12a and the lower frame 12b arranged in an exposed manner are arranged at positions protruding inside the frame of the outer window frame 43 (see FIGS. 3 and 4). The vertical frames 12c and 12d arranged in a concealed manner are arranged at positions hidden on the indoor side of the outer window frame 43 (see FIGS. 5 and 6).

[0037] As shown in FIG. 3, in the exposed arrangement, the upper frame 12a is attached to the body member using the first attachment portion 25a. Specifically, the upper frame 12a abuts the projection piece 20d protruding from the outer expected surface 20a against the expected surface 46a of the ceiling-side base material 46 with the frame member 50 sandwiched therebetween. Further, the upper frame 12a abuts the outdoor-side finding piece 21 against the indoor-side finding surfaces 52 of the left and right vertical frame portions 43c and 43d of the outer window frame 43. The upper frame 12a is fixed to the body 42a via the base material 46 by fastening the wall portion 20 to the base material 46 with screws 27 through the first attachment holes 20c. The frame member 50 may not be interposed between the outer expected surface 20a and the expected surface 46a, and the projection piece 20d may be directly abutted against the expected surface 46a. The reference numeral 72 in FIGS. 3 and 4 is mortar filled on the body 42a side of the base material 46.

[0038] As shown in Fig. 4, in the exposed arrangement, the lower frame 12b is attached to the body member using the first attachment portion 25a. The attachment structure of the lower frame 12b to the body member (base material 46) is the same as that of the upper frame 12a. That is, the lower frame 12b is fixed to the body 42a via the base material 46 by fastening the wall portion 20 to the base material 46 with screws 27 through the first attachment holes 20c. Also in the lower frame 12b, the picture frame member 50 may not be interposed between the outer prospective surface 20a and the prospective surface 46a, and the protruding piece 20d may be directly abutted against the prospective surface 46a. The upper frame 12a and the lower frame 12b may be connected to the prospective surface of the upper frame portion 43a of the outer window frame 43 instead of or together with the base material 46.

[0039] In the present embodiment, in the exposed arrangement, a gap C corresponding to the height of the protruding piece 20d is formed between the picture frame member 50 (or the prospective surface 46a of the base material 46) and the outer prospective surface 20a of the upper frame 12a and the lower frame 12b. In the upper frame 12a and the lower frame 12b, the thermally expandable member 32 provided on the outer prospective surface 20a is disposed in the gap C. Thereby, the upper frame 12a and the lower frame 12b secure a space (gap C) between the outer prospective surface 20a and the prospective surface 46a, enabling the reliable installation of the thermally expandable member 32. Note that the lower frame 12b is less likely to reach a higher temperature than the upper frame 12a above it during a fire. Therefore, the thermally expandable member 32 on the outer prospective surface 20a of the lower frame 12b may be omitted. Instead of providing the protruding piece 20d, the thermally expandable member 32 may be directly sandwiched between the outer prospective surface 20a and the picture frame member 50 (or the prospective surface 46a).

[0040] Note that in the exposed arrangement, between the upper frame 12a and the lower frame 12b and the outer window frame 43, the outdoor airtight portion 29a of the second airtight material 29 adheres to the indoor finding surface 52 to make it airtight between indoors and outdoors (see Figs. 3 and 4).

[0041] Next, the vertically arranged frames 12c and 12d to be concealed will be described. Depending on the installation position, the vertically arranged frames 12c and 12d have a first concealed arrangement (see Fig. 5) fixed to the building body 42a via the base material 46 and a second concealed arrangement (see Fig. 6) fixed to the side post 48. Although the installation state of the vertically arranged frame 12d is not shown, it may be the same as that of the vertically arranged frame 12c shown in Figs. 5 and 6 except for the left-right symmetric structure.

[0042] As shown in Fig. 5, in the first concealed arrangement, the vertically arranged frame 12c (12d) is attached to the building body member using the first attachment portion 25a. Specifically, the vertically arranged frame 12c (12d) abuts the prospective surface 20a (the protruding piece 20d) against the prospective surface 46a of the base material 46 on the side wall side. Further, the vertically arranged frame 12c (12d) abuts the outdoor finding piece 21 against the indoor finding surface 53 of the lower frame portion 43b and the indoor finding surfaces 52 of the vertically arranged frame portions 43c and 43d. The vertically arranged frame 12c (12d) is fixed to the building body 42a via the base material 46 by fastening the wall portion 20 to the base material 46 with screws 27 through the first attachment holes 20c. As a result, the vertically arranged frame 12c (12d) in the first concealed arrangement is installed in a state where substantially the whole is concealed on the indoor side of the vertically arranged frame portion 43c (43d) of the outer window frame 43. The vertically arranged frames 12c and 12d may be connected to the indoor finding surfaces 52 of the vertically arranged frame portions 43c and 43d of the outer window frame 43 instead of or together with the base material 46.

[0043] As shown in Fig. 6, in the second concealed arrangement, the vertically arranged frame 12c (12d) is attached to the building body member using the second attachment portion 25b. Specifically, the vertically arranged frame 12c (12d) is arranged on the indoor side of the indoor finding surface 48b of the side post 48. The vertically arranged frame 12c (12d) abuts the outdoor finding surface of the outdoor finding piece 21 against the indoor finding surface 48b of the side post 48. The vertically arranged frame 12c (12d) is fixed to the side post 48, which is a building body member, by fastening the outdoor finding piece 21 to the side post 48 with screws 27 through the second attachment holes 21a. As a result, the vertically arranged frame 12c (12d) in the second concealed arrangement is installed in a state where substantially the whole is concealed on the indoor side of the side post 48. Note that the reference numeral 56 in Fig. 6 is a cover member that covers the vertically arranged frame 12c (12d). The reference numeral 57 is a support member that supports one end of the cover member 56.

[0044] In the vertical frame 12c (12d) of the first concealed arrangement, the first airtight material 23 protruding from the outer expected surface 20a of the wall portion 20 is made airtight between the indoor finding surface 53 and the frame member 50 by being in close contact therewith (see FIG. 5). In the vertical frame 12c (12d) of the second concealed arrangement, the outdoor airtight portion 29a of the second airtight material 29 is made airtight between the indoor and outdoor by being in close contact with the indoor finding surface 48b of the vertical post 48 (see FIG. 6).

[0045] Therefore, in the opening device 10 installed with the first mounting structure, the upper frame 12a and the lower frame 12b are connected to the expected surface 46a of the base material 46 and are arranged to project inside the frame of the outer window frame 43. That is, consider the case where the upper frame 12a is in a concealed arrangement like the vertical frames 12c and 12d shown in FIG. 5. In this case, the upper frame 12a is installed by inserting its upper end into the space formed by removing the upwardly substantially U-shaped base material 46 shown in FIG. 3, for example. Then, when removing the facing material 14 for maintenance or the like, it is necessary to remove the frame member 50 and the blind box 58 installed on the indoor side thereof before removing the pressing edge 16 (upper edge member 16a), which is troublesome. In this regard, since the upper frame 12a of the present embodiment is in the exposed arrangement shown in FIG. 3, the pressing edge 16 can be easily attached and detached, and high maintainability can be obtained. The blind box 58 is a box that houses the upper end of a blind (not shown) installed on the indoor side of the opening device 10 and is fixed to the base material 46 or the like.

[0046] However, in the opening device 10, since the upper frame 12a and the lower frame 12b are in the exposed arrangement, when the upper frame 12a and the lower frame 12b are warped and deformed due to heat deformation during a fire, a gap penetrating in the indoor-outdoor direction is formed between the respective outer expected surfaces 20a (protruding pieces 20d) and the base material 46 or the frame member 50. This gap is a through hole penetrating between the indoor and outdoor and serves as a passage for flames and smoke. Therefore, even if the upper frame 12a or the lower frame 12b is warped and deformed during a fire, the opening device 10 of the present embodiment can block the gap formed between the outer expected surface 20a and the base material 46, which is a body member, by the expansion of the thermally expandable member 32 provided on the outer expected surface 20a. As a result, the opening device 10 can obtain high fireproof performance.

[0047] On the other hand, even if the vertical frames 12c and 12d of the concealed arrangement are warped and deformed during a fire, their outdoor sides are concealed by the vertical frame parts 43c and 43d and the mullion 48, and no through holes between the indoor and outdoor sides are formed. Therefore, the vertical frames 12c and 12d can ensure fireproof performance even if the thermal expansion members 32 on the outer expected surface 20a are omitted, and the component cost and construction cost of the thermal expansion members 32 can be reduced. Moreover, since the vertical frames 12c and 12d of the opening device 10 are concealed, the vertical frames 12c and 12d and the vertical frames 30c and 30d are prevented from being visually recognized from the outside of the building 42 through the facing materials 18a and 18b of the curtain wall 18. As a result, the opening device 10 can improve the appearance quality of the building 42. In addition, when visually recognizing the outside from the indoor side through the facing material 14, the opening device 10 has the left and right vertical frames 12c and 12d, which are more conspicuous than the upper frame 12a and the lower frame 12b, arranged in a concealed manner, thereby maximizing the apparent opening area of the facing material 14.

[0048] Next, the second mounting structure will be described. In the second mounting structure, the exposed arrangements of the upper frame 12a and the lower frame 12b are the same as or similar to those of the first mounting structure, but the vertical frames 12c and 12d are also arranged in an exposed manner. Depending on the position where the vertical frames 12c and 12d are installed, there are a first exposed arrangement (see FIG. 7) fixed to the building body 42a via the base material 46 and a second exposed arrangement (see FIG. 8) fixed to the mullion 48. Although the construction state of the vertical frame 12d is not shown, it may be the same except that it has a left-right symmetric structure with the vertical frame 12c shown in FIGS. 7 and 8.

[0049] As shown in FIG. 7, in the first exposed arrangement, the vertical frame 12c (12d) is attached to the building body member using the first attachment portion 25a. Specifically, the vertical frame 12c (12d) abuts the expected surface 46a of the base material 46 on the side wall side with the picture frame member 50 sandwiched between the outer expected surface 20a (protruding piece 20d). Further, the vertical frame 12c (12d) abuts the indoor finding surface 53 of the lower frame portion 43b of the outer window frame 43 and the indoor finding surfaces 52 of the vertical frame parts 43c and 43d. The vertical frame 12c (12d) is fixed to the building body 42a via the base material 46 by fastening the wall portion 20 to the base material 46 with screws 27 through the first attachment holes 20c.

[0050] As shown in Fig. 8, in the second exposed arrangement, the vertical frames 12c (12d) are attached to the body member using the first attachment portion 25a. Specifically, the vertical frames 12c (12d) are arranged on the side portions of the inner prospective surface 48a of the vertical post 48. The vertical frames 12c (12d) abut the outer prospective surface 20a against the inner prospective surface 48a of the vertical post 48. The vertical frames 12c (12d) are fixed to the vertical post 48, which is the body member, by fastening the wall portion 20 to the vertical post 48 with screws 27 through the first attachment holes 20c.

[0051] In such an exposed arrangement, particularly at the attachment portion with the vertical post 48 shown in Fig. 8, the vertical frames 12c, 12d do not protrude to the indoor side of the indoor finding surface 48b of the vertical post 48. Therefore, it is possible to suppress the opening device 10 from damaging the interior view of the building 42. The vertical frames 12c (12d) in the first exposed arrangement are airtight between the indoors and outdoors by the first airtight material 23 protruding from the outer prospective surface 20a of the wall portion 20 being in close contact with the indoor finding surface 53 and the frame member 50 (see Fig. 7). The vertical frames 12c (12d) in the second exposed arrangement are airtight between the indoors and outdoors by the first airtight material 23 protruding from the outer prospective surface 20a of the wall portion 20 being in close contact with the inner prospective surface 48a of the vertical post 48 (see Fig. 8).

[0052] Therefore, in the opening device 10 installed with the second attachment structure, the vertical frames 12c, 12d are connected to the prospective surface 46a of the base material 46 and the inner prospective surface 48a of the vertical post 48, and are arranged to protrude inside the frames of the outer window frame 43 and the vertical post 48. For this reason, when the vertical frames 12c, 12d are warped and deformed by heating during a fire, a gap penetrating in the indoor-outdoor direction is formed between the respective outer prospective surfaces 20a (protruding pieces 20d) and the base material 46 or the vertical post 48, and there is a concern that this gap will become a passage for flames and smoke. Therefore, even if the vertical frames 12c, 12d are warped and deformed during a fire, the opening device 10 of the present embodiment can block the gap formed between the outer prospective surface 20a and the vertical post 48 or the base material 46, which is the body member, by the expansion of the thermally expandable member 32 provided on the outer prospective surface 20a. As a result, the opening device 10 can obtain high fire prevention performance.

[0053] As described above, the opening device 10 of the present embodiment has the thermal expansion member 32 between at least the prospective surface 20a on the outer side of the upper frame 12a and the prospective surface 46a of the base material 46 which is a body member connected thereto. Thereby, the opening device 10 can construct a fireproof structure in the range where fireproofing is required on the indoor side of the curtain wall 18 which is an outer window of a non-fireproof structure. For this reason, the building 42 provided with the opening device 10 can be provided with the fireproof structure by the opening device 10 at the necessary positions in a state where the appearance design of the curtain wall 18 which is an outer window is unified. As a result, by means of the opening device 10, the building 42 can ensure the predetermined fireproof performance while ensuring the appearance quality of the outer window.

[0054] On the other hand, in the first attachment structure, the vertically arranged frames 12c and 12d which are arranged in a concealed manner can ensure sufficient fireproof performance by having their outdoor side finding surfaces (outdoor side finding pieces 21) wrap around the indoor side finding surfaces of the mullion 48 and the outer window frame 43. Therefore, by not providing the thermal expansion member 32 in this part, the product cost can be reduced.

[0055] In particular, although the frame body 12 of the opening device 10 is an extruded profile containing aluminum, sufficient fireproof performance can be ensured by the thermal expansion member 32. Thereby, the frame body 12 can be configured without using a material with higher fire resistance such as iron or stainless steel, and the weight reduction and cost reduction of the opening device 10 can be achieved.

[0056] Moreover, in the window device of the present embodiment, the window frames (outer window frames 43, vertical posts 48) of the curtain wall 18, which is the outer window, are also extrusion-molded members containing aluminum. And these window frames and the frame body 12 are subjected to the same or similar surface treatments. As a result, the building 42 has enhanced unity in appearance between the outer window (curtain wall 18) and the inner window (opening device 10), and high appearance quality can be obtained. In other words, in the present embodiment, by forming both the window frames (outer window frames 43, vertical posts 48) of the outer window and the frame body 12 of the inner window with shaped members containing aluminum, the same or similar surface treatments are made possible. Note that the surface treatments of the window frames and the frame body 12 being the same or similar include, for example, cases where the aesthetic appearances of both frames are exactly the same, or cases where they have similar colors, patterns, fine shapes, etc., or cases where the same or similar surface treatments are applied during the production process, etc.

[0057] In the opening device 10 of the present embodiment, the vertical frames 12c, 12d have a first attachment portion 25a on the outer facing surface 20a and a second attachment portion 25b on the outdoor side facing surface (outdoor side facing piece 21). As a result, when the frame body 12 is attached to the building member, flexible attachment can be achieved using at least one of the attachment portions 25a, 25b (see FIGS. 5 to 8). That is, the opening device 10 can be used as both the frame body 12 in the above-described exposed arrangement and concealed arrangement. As a result, the opening device 10 has high versatility, can respond to different installation states, and can reduce manufacturing costs.

[0058] Also, in the opening device 10 of the present embodiment, each of the frames 12a to 12d has a first airtight material pocket 22 on the outer facing surface 20a and a second airtight material pocket 28 on the outdoor side facing surface (outdoor side facing piece 21). As a result, when the frame body 12 is attached to the building member of the building 42, a flexible airtight line can be constructed by attaching airtight materials 23, 29 to at least one of the airtight material pockets 22, 28, and the versatility is high.

[0059] The opening device according to the present invention is an opening device installed as an inner window on the indoor side of an outer window facing the outside of a building, and includes a frame body having an upper frame, a lower frame, and left and right vertical frames, and a heat-resistant surface material supported at the opening of the frame body. At least the upper frame has its outer expected surface connected to the expected surface of the building's structural member or the window frame of the outer window, and a first thermally expandable member that expands when heated is provided between the outer expected surface and the expected surface of the window frame. According to such a configuration, the upper frame of the opening device, which is an inner window, is fixed so as to protrude from the expected surface of the structural member or the window frame of the outer window. And a first thermally expandable member is interposed between the outer expected surface of the frame body and the expected surface of the structural member or the like. For this reason, even when the upper frame warps and deforms during a fire, it is possible to suppress the formation of a through hole in the indoor-outdoor direction between its outer expected surface and the structural member or the like. As a result, a fireproof structure can be constructed in the range where fireproofing is required on the indoor side of the outer window, and while ensuring the appearance quality of the outer window, a sufficient fireproof structure can be provided.

[0060] It may have a protruding piece that protrudes from the outer expected surface and whose tip abuts against the expected surface of the window frame to form a gap between the expected surface of the window frame and the outer expected surface, and the first thermally expandable member may be arranged in the gap. Then, the first thermally expandable member can be surely and easily installed between the outer expected surface and the expected surface.

[0061] The lower frame may have its outer expected surface connected to the expected surface of the building's structural member or the window frame, and the left and right vertical frames may have their outdoor-facing surfaces connected to the indoor-facing surfaces of the window frame of the outer window. Then, since the left and right vertical frames, which are more likely to be noticeable than the upper and lower frames in appearance, are hidden on the indoor side of the window frame of the outer window, it is possible to suppress the opening device from being noticeable when looking at the outer window from the outside.

[0062] It may be configured not to provide a thermally expandable member that expands when heated between the outdoor-facing surface and the indoor-facing surface of the window frame. That is, since sufficient fireproof performance can be obtained by arranging the vertical frames so as to be hidden on the indoor side of the window frame of the outer window, the cost of parts and installation of the thermally expandable member can be reduced.

[0063] The frame body may be composed of an extruded profile of a metal material containing aluminum. That is, the opening device can build sufficient fireproof performance between the frame body and the body member of the building or the window frame of the outer window. Therefore, by forming the frame body with an extruded profile containing aluminum, while ensuring high appearance quality by applying a desired surface treatment, weight reduction and cost reduction can also be achieved.

[0064] A second thermally expandable member that expands when heated is provided between the inner expected surface of the upper frame and the upper end surface of the facing material, and a third thermally expandable member that expands when heated is provided between the inner expected surface of the lower frame and the lower end surface of the facing material. A fourth thermally expandable member that expands when heated may be provided between the inner expected surfaces of the left and right vertical frames and the side end surfaces of the facing material, respectively. In this way, a fireproof structure is also constructed between the frame body and the facing material.

[0065] The window device according to the present invention is a window device in which an opening device serving as an inner window is installed on the indoor side of an outer window facing the outside of a building. The opening device includes a frame body having an upper frame, a lower frame, and left and right vertical frames, and a facing material having heat resistance and supported at the opening of the frame body. At least the outer expected surface of the upper frame is connected to the expected surface of the body member of the building or the window frame of the outer window, and a thermally expandable member that expands when heated is provided between the outer expected surface and the expected surface of the window frame. According to such a configuration, a fireproof structure can be constructed in a range where fireproofing is required on the indoor side of the outer window, and while ensuring the appearance quality of the outer window, a sufficient fireproof structure can be provided.

[0066] The frame body is composed of an extruded profile of a metal material containing aluminum, the window frame is composed of an extruded profile of a metal material containing aluminum, and the frame body and the window frame may be configured to be subjected to the same or similar surface treatment. In this way, the appearance designs of the outer window and the inner window are unified, and the appearance quality is further improved.

[0067] Note that the present invention is not limited to the above-described embodiments, and it goes without saying that it can be freely changed without departing from the gist of the present invention.

[0068] For example, in the above, when the opening device 10 is used as the inner window, the curtain wall 18 is exemplified as the outer window. However, the outer window may be, in addition to the curtain wall, a sliding window such as a sliding window or a rotating window such as a casement window, or a window system such as a vertical sliding window, or a door.

Explanation of Reference Numerals

[0069] 10 Opening device, 12 Frame body, 12a Upper frame, 12b Lower frame, 12c, 12d Vertical frames, 14, 18a, 18b Facings, 16 Pressing edge, 18 Curtain wall, 20 Wall portion, 20a Outer expected surface, 20d Protruding piece, 30f, 48b, 52, 53 Indoor finding surfaces, 30g Outdoor finding surface, 32 Thermally expandable member, 42 Building, 42a Frame, 43 Outer window frame, 46 Base material, 46a Expected surface, 48 Side upright, 50 Frame member

Claims

1. An opening device installed as an inner window on the indoor side of an outer window facing the outside of a building, comprising: a frame body having an upper frame, a lower frame, and left and right vertical frames; a face material supported at the opening of the frame body; and the left and right vertical frames have a first attachment portion provided on its outer expected surface and directly connectable to a part of the building's body member by screws, and a second attachment portion provided on its outdoor-facing surface and directly connectable to another part of the building's body member different from the above-mentioned part by screws; and the left and right vertical frames are connected to the body member by selectively using one of the first attachment portion and the second attachment portion. An opening device characterized by the above.

2. An opening device installed as an inner window on the indoor side of an outer window facing the outside of a building, comprising: a frame body having an upper frame, a lower frame, and left and right vertical frames; a face material supported at the opening of the frame body; and the left and right vertical frames have a first attachment portion provided on its outer expected surface and connectable to the building's body member, and a second attachment portion provided on its outdoor-facing surface and connectable to the building's body member; and the left and right vertical frames have a first airtight material pocket provided on the outer expected surface for installing a first airtight material, a wall portion forming the outer expected surface, a second airtight material pocket provided on the outdoor-facing surface for installing a second airtight material, and an outdoor-facing piece protruding from the outdoor end of the wall portion to the inside of the frame body; and An opening device characterized by the above.

3. The opening device according to Claim 1 or 2, wherein the left and right vertical frames are provided with a thermally expandable member that expands when heated on its inner expected surface. An opening device characterized by the above.

4. A window device in which the opening device according to any one of Claims 1 to 3 is installed as an inner window of an outer window facing the outside of a building, wherein the outer window has an outer window frame having an upper frame portion, a lower frame portion, and left and right vertical frame portions, a vertical piece standing between the upper frame portion and the lower frame portion, and an outer window face material supported by the outer window frame and the vertical piece; and the outer surfaces of the upper frame and the lower frame are connected to the expected surface of the body member or the outer window frame, and the left and right vertical frames are connected to the body member or the outer window frame by using the first attachment portion or the second attachment portion. A window device characterized by the above.

5. The window device according to Claim 4, wherein the body member includes a base material fixed to the building's body and the vertical piece. The left and right vertical frames are connected to the base material or the prospective surface of the upright using the first mounting portion, or are connected to the indoor finding surface of the upright using the second mounting portion. A window device characterized by the above.

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