Opening device

Abstract

To provide an opening device capable of improving workability.SOLUTION: An opening device includes an installation auxiliary member 1, frame members 2a, 2b, 2c, 2d, and a fireproof glass 3. The installation auxiliary member 1 is an elongated member that is attached to inner surfaces 4a, 4b, 4c, 4d of all four sides of the opening 4. The frame members 2a, 2b, 2c, 2d have a pressing edge 5 that engage with the installation auxiliary member 1 from the inner side and are fixed with their positions adjusted in the inner and outer circumferential directions.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an opening device to be installed in an opening of a building. [Background technology]

[0002] 2. Description of the Related Art Opening devices such as fixed windows that are installed in openings in buildings have been known for some time. There is a demand for improving ease of installation of such opening devices. Summary of the Invention [Problem to be solved by the invention]

[0003] In view of the above-mentioned circumstances, an object of the present invention is to provide an opening device capable of improving workability. [Means for solving the problem]

[0004] In order to achieve the above object, the opening device of the invention described in claim 1 comprises an installation auxiliary material, a frame material, and fireproof glass, the installation auxiliary material being a long member that is attached to the inner peripheral surfaces of all four sides of the opening, and the frame material having a ridge that engages with the installation auxiliary material from the inner peripheral side and is fixed by adjusting its position in the inner and outer circumferential directions. Effect of the Invention

[0005] The opening device according to the invention described in claim 1 comprises an attachment auxiliary material, a frame material, and fireproof glass, the attachment auxiliary material being a long member attached to the inner peripheral surface of the four peripheries of the opening, and the frame material having a ridge that engages with the attachment auxiliary material from the inner peripheral side and is fixed by adjusting its position in the inner and outer peripheral directions, which makes it easy to attach the frame material and the fireproof glass, improving workability. Also, since the device is provided with fireproof glass, fireproof performance is obtained. [Brief description of the drawings]

[0006] [Figure 1] FIG. 1 is a vertical cross-sectional view showing a first embodiment of an opening device of the present invention. [Diagram 2] FIG. 3 is a cross-sectional view of the opening device. [Diagram 3] FIG. 2 is a front view of the opening device as seen from the indoor side. [Figure 4] FIG. 2A is an enlarged vertical cross-sectional view of a lower frame portion of the opening device, and FIG. 2B is a vertical cross-sectional view of the lower frame portion in an exploded state. [Diagram 5] (a) is a front view from the inside of the room showing how to install the upper frame, and (b) is a front view from the inside of the room showing how to install the vertical frame on the other side. [Figure 6] FIG. 4 is a vertical cross-sectional view showing a second embodiment of the opening device of the present invention. [Figure 7] FIG. 3 is a cross-sectional view of the opening device. [Figure 8] FIG. 2A is an enlarged vertical cross-sectional view of a lower frame portion of the opening device, and FIG. 2B is a vertical cross-sectional view of the lower frame portion in an exploded state. [Figure 9] FIG. 2A is an enlarged cross-sectional view of a vertical frame portion of the opening device, and FIG. 2B is a cross-sectional view of the vertical frame portion in an exploded state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Figures 1 to 4 show a first embodiment of an opening device 6 of the present invention. As shown in Figures 1 and 2, this opening device 6 is applied to a fixed window installed in an opening 4 on the indoor side of a curtain wall 7 that forms the exterior wall of a building.

[0008] As shown in Figures 1 and 2, the curtain wall 7 is fixed to a structure (not shown) and has multiple mullions 8, 8, ... spaced apart in the left-right direction, with mullions 9a, 9b attached at intervals in the up-down direction between the mullions 8, 8, .... As shown in Figure 1, the curtain wall 7 has a vision section 10 facing the living space, and a spandrel section 11 facing the boundary between the upper and lower floors. The vision sections 10 and spandrel sections 11 are arranged alternately in the up-down direction.

[0009] The mullion 8 is made of aluminum material and, as shown in Figure 2, has a main body 12 with a rectangular cross section on the indoor side, and a front wall 13 and a front wall 14 on the outdoor side of the main body 12 so as to form a T shape. Mounting grooves 15a, 15b are formed on the right and left sides of the front wall 13. The mullion 8 is formed continuously across the vision section 10 and the spandrel section 11, and is fixed to the framework with fasteners (not shown).

[0010] As shown in Figure 2, in the vision section 10, the left and right ends of glass (double-glazed glass) 16 are inserted into the mounting grooves 15a, 15b on the outdoor side of the adjacent left and right mullions 8, 8, a flange 17 is attached to the indoor side of the glass 16 in the mounting grooves 15a, 15b, and sealant 18 is filled between the outdoor side of the flange 17 and the indoor side of the glass 16, and between the visible wall 14 of the mullion 8 and the outdoor side of the glass 16, to hold the glass 16 in place.

[0011] As shown in Figure 1, the transom 9b located below the vision section 10 has a hollow section 19 on the indoor side, and ridges 20a, 20b are attached to the outdoor side, forming a glass holding groove 21a that opens upward and a glass holding groove 21b that opens downward. The lower end of the glass 16 of the vision section 10 is inserted into the glass holding groove 21a that opens upward, and the outdoor side and indoor side of the glass 16 are filled with sealant 22 to fix the glass 16 in place. The upper end of the glass 23 of the spandrel section 11 is inserted into the glass holding groove 21b that opens downward, and the indoor side is supported by a gasket 24, and the outdoor side is filled with sealant 25 to fix the glass 23. The gutter 9a located on the upper side of the vision section 10 has approximately the same shape as the gutter 9b on the lower side of the vision section 10 described above, and the upper end of the glass 16 of the vision section 10 is inserted into the glass retaining groove 21b which opens downward, and the glass 16 is fixed by filling the outside and inside of the room with sealing material 26, and the lower end of the glass 23 of the spandrel section 11 is inserted into the glass retaining groove 21a which opens upward, and the inside of the room is supported by a gasket 24, and the outside of the room is filled with sealing material 25 to fix the glass 23.

[0012] As shown in Figure 1, a steel material 28 is attached to the interior side of the transom 9a located on the upper side of the vision section 10, and a metal tray 29 is provided so as to continue from the lower surface of the transom 9a to the interior side. A steel material 28 is also attached to the interior side of the transom 9b located on the lower side of the vision section 10, and a metal tray 29 is provided so as to continue from the upper surface of the transom 9b to the interior side.

[0013] 1 and 2, this opening device 6 is installed in an opening 4 formed by upper and lower trays 29, 29 and the opposing prospective surfaces of left and right mullions 8, 8. This opening device 6 is equipped with mounting auxiliary members 1, 1, ... attached to inner peripheral surfaces 4a, 4b, 4c, 4d on all four sides of the opening 4, frame members on all four sides (upper frame 2a, lower frame 2b, left and right vertical frames 2c, 2d) attached to the mounting auxiliary member 1, and fireproof glass 3 made of heat-resistant crystallized glass or the like supported by the frame members 2a, 2b, 2c, 2d.

[0014] The mounting auxiliary material 1 is formed from an extruded aluminum alloy profile and, as shown in Figures 1 and 2, is formed with a U-shaped cross-section having a concealed wall 31 that abuts against the inner surfaces 4a, 4b, 4c, 4d of the opening 4 and is fixed with screws (drill screws) 30, an exterior concealed wall 32a that extends inward from the exterior end of the concealed wall 31, and an interior concealed wall 32b that extends inward from the interior end of the concealed wall 31. The four mounting auxiliary members 1 are formed of shaped members having the same cross-sectional shape. The longitudinal end faces of the upper and lower mounting auxiliary members 1 abut against the left and right inner peripheral faces 4c, 4d of the opening 4, and the longitudinal end faces of the left and right mounting auxiliary members 1 abut against the inner peripheral edges of the upper and lower mounting auxiliary members 1 (see Figure 3).

[0015] As shown in Figures 1 and 2, the mounting auxiliary member 1 on all four sides is divided into two parts at the center in the longitudinal direction, and gaps 33a and 33b of about 5 mm are formed between the ends of the two divided mounting auxiliary members 1a and 1b. The ends of the two divided mounting auxiliary members 1a and 1b on the central side are each cut into a crank shape, and the gap 33a in the exterior facing wall 32a of the two divided mounting auxiliary members 1a and 1b and the gap 33b in the interior facing wall 32b are positioned at offset positions in the longitudinal direction, and when viewed from the exterior side, the gap 33a in the exterior facing wall 32a is hidden by the interior facing wall 32b of one of the divided mounting auxiliary members 1a, and when viewed from the interior side, the gap 33b in the interior facing wall 32b is hidden by the exterior facing wall 32a of the other divided mounting auxiliary member 1b.

[0016] In this way, the mounting auxiliary material 1 is divided into two members (1a, 1b) at the center in the longitudinal direction, and gaps 33a, 33b are provided between the ends of the two divided mounting auxiliary materials 1a, 1b, so that when the mounting auxiliary materials 1a, 1b thermally expand during a fire, the gaps 33a, 33b absorb the thermal expansion, and the mounting auxiliary materials 1a, 1b can be prevented from deforming so as to bend toward the inner periphery. Moreover, by cutting the ends of the central parts of the mounting auxiliary materials 1a, 1b into a crank shape, the gap 33a in the exterior-side visible wall 32a is hidden by the interior-side visible wall 32b, and the gap 33b in the interior-side visible wall 32b is hidden by the exterior-side visible wall 32a, so that it is possible to prevent flames from communicating through the gaps 33a, 33b between the divided mounting auxiliary materials 1a, 1b.

[0017] The frame materials (upper frame 2a, lower frame 2b, left and right vertical frames 2c, 2d) are formed from extruded aluminum alloy shapes and, as shown in Fig. 4, are formed with a roughly S-shaped cross section having a groove-shaped mounting portion 35 that opens toward the outer periphery on the outside of the room, and a roughly U-shaped groove portion 37 that is formed adjacent to the inside of the room from mounting portion 35 and opens toward the inner periphery constituting the glass opening 36. The frame materials on all four sides (upper frame 2a, lower frame 2b, left and right vertical frames 2c, 2d) are formed from shapes of the same cross section. The mounting portion 35 has an exterior facing wall 38a and an interior facing wall 38b, and the interior and exterior facing walls 38a, 38b engage with the mounting auxiliary material 1 from the inner periphery so as to cover the interior and exterior facing walls 32a, 32b of the mounting auxiliary material 1, and are slidable in the inner and outer periphery directions. Then, after adjusting the positions of the frame materials 2a, 2b, 2c, 2d in the inner and outer periphery directions, the frame materials 2a, 2b, 2c, 2d are fixed to the mounting auxiliary material 1 by penetrating the interior facing wall 38b of the frame materials 2a, 2b, 2c, 2d and the interior facing wall 32b of the mounting auxiliary material 1 from the interior side with drill screws 39. A gap 40 of about 5 mm is formed between the inner peripheral surfaces 4a, 4b, 4c, and 4d of the opening 4 and the outer peripheral surfaces of the frame members 2a, 2b, 2c, and 2d. A spacer 41 is provided in the gap 40 between the outer peripheral surface of the lower frame 2b and the lower inner peripheral surface 4b of the opening 4. The interior side wall of the groove 37 that constitutes the glass opening 36 is formed as a removable ridge 5. A mounting portion 43 for a bead 42 (see Figs. 1 and 2) is formed on the inner surface of the exterior side wall of the glass opening 36. A setting block 44 that receives the lower end of the fireproof glass 3 is arranged within the glass opening 36 of the sill 2b. The ridge 5 of the sill 2b may be fastened together with the groove 37 and spacer 41 of the sill 2b by screws 58 from the inner periphery side.

[0018] As shown in Figures 1 and 2, the fireproof glass 3 has its four edges fitted into the glass opening 36 of the four surrounding frame materials (upper frame 2a, lower frame 2b, and left and right vertical frames 2c, 2d) and is fixed to the glass opening 36 with a bead 42 on the outside of the room and a backup material 45 and a sealant 46 on the inside of the room.

[0019] Next, the construction procedure for this opening device will be explained. First, the mounting auxiliary material 1 is attached to the lower inner peripheral surface 4b of the opening 4 with screws 30. At this time, the left and right end faces of the mounting auxiliary material 1 are abutted against the left and right inner peripheral surfaces 4c, 4d (the projected surfaces of the mullions 8, 8) of the opening 4, and care is taken to prevent a step from occurring at the divided area in the center by placing a batten and clamping it with a clamp. The mounting auxiliary material 1 is similarly attached to the upper inner peripheral surface 4a of the opening 4. Next, the mounting auxiliary material 1 is attached to the left and right inner peripheral surfaces 4c, 4d of the opening 4 with screws 30. At this time, the upper and lower end faces of the mounting auxiliary material 1 are abutted against the inner peripheral edges of the upper and lower mounting auxiliary materials 1 that were attached earlier, and the mounting is performed so that no step is created at the division point in the center. Next, the lower frame 2b is engaged with its mounting portion 35 from the inner periphery side to the auxiliary mounting material 1, and with a specified gap formed between the outer periphery of the lower frame 2b and the inner periphery 4b below the opening 4 by the spacer 41, the lower frame 2b is fixed to the auxiliary mounting material 1 from the inside of the room with the drill screw 39. At this time, the bead 42 is attached to the lower frame 2b in advance, and the batten 5 is removed (the same applies to the upper frame 2a and the vertical frames 2c and 2d). Next, the mounting portion 35 of the vertical frame 2c on either the left or right side is engaged with the auxiliary mounting material 1 from the inner periphery side, and with a specified gap 40 formed between the outer periphery of the vertical frame 2c and the inner periphery 4c of the opening 4, the vertical frame 2c is fixed to the auxiliary mounting material 1 from the inside of the room with a drill screw 39. When mounting the vertical frame 2c, the lower end face of the vertical frame 2c is aligned with the lower frame corner piece (not shown) located at the longitudinal end of the lower frame 2b. Next, while engaging the upper frame 2a with its mounting portion 35 in the mounting auxiliary material 1, as shown in Figure 5(a), one longitudinal end of the upper frame 2a is moved so as to enter between the upper end of the previously installed vertical frame 2c on one side and the upper inner surface 4a of the opening 4, and finally the upper frame 2a is temporarily installed so as to fit along the upper inner surface 4a of the opening 4. Next, while engaging its mounting portion 35 with the mounting auxiliary material 1, the other vertical frame 2d is moved toward the other side inner surface 4d of the opening 4 so as to fit between the upper frame 2a and the lower frame 2b, as shown in Figure 5 (b), and finally temporarily installed so as to fit along the other side inner surface 4d of the opening 4. Then, with the top frame 2a and the other vertical frame 2d temporarily installed, the top frame 2a and the other vertical frame 2d are positioned so that there are no gaps between the upper and lower ends of the left and right vertical frames 2c, 2d and the top frame 2a and the lower frame 2b (see Figure 3). At this time, the upper and lower ends of the left and right vertical frames 2c, 2d are installed to match the top frame corner pieces (not shown) arranged at both ends of the top frame 2a and the lower frame corner pieces (not shown) arranged at both ends of the lower frame 2b. Next, the upper frame 2a is fixed to the mounting auxiliary material 1 from inside the room with a drill screw 39, and the other side vertical frame 2d is fixed to the mounting auxiliary material 1 from inside the room with a drill screw 39. Next, after placing a setting block 44 on the lower frame 2b, the fireproof glass 3 is inserted from the inside of the room into the opening formed by the four surrounding frame members 2a, 2b, 2c, and 2d, and a push-in edge 5 is attached to each of the frame members 2a, 2b, and 2c. Thereafter, the backup material 45 and the sealant 46 are inserted into the gap between the interior side of the fireproof glass 3 and the ridge 5, and the fireproof glass 3 is fixed in place.

[0020] In this way, in this opening device 6 (first embodiment), the mounting auxiliary material 1 is attached to the inner peripheral surfaces 4a, 4b, 4c, 4d of the opening 4, and the four surrounding frame materials 2a, 2b, 2c, 2d are engaged with the mounting auxiliary material 1 from the inner peripheral side and then adjusted and fixed in position in the inner and outer peripheral directions, so that the four surrounding frame materials 2a, 2b, 2c, 2d can be easily attached, and even if there is an error in the vertical and horizontal dimensions of the opening 4, the error can be absorbed to attach the frame materials 2a, 2b, 2c, 2d, resulting in good workability. Also, since each of the frame materials 2a, 2b, 2c, 2d has a ridge 5 on the indoor side, the fireproof glass 3 can be easily attached from the indoor side. In addition, this opening device 6 has visible walls 38a, 38b on the frame materials 2a, 2b, 2c, 2d that overlap with the inner and outer visible walls 32a, 32b of the mounting auxiliary material 1 (see Figure 4), so that the fixing portions of the frame materials 2a, 2b, 2c, 2d to the opening 4 are protected from flames, and the use of fire-resistant glass 3 improves fire resistance. In addition, in this opening device 6, the mounting auxiliary material 1 is disposed at a position offset in the indoor / outdoor direction with respect to the glass opening 36 of the frame materials 2a, 2b, 2c, 2d (see FIG. 4), thereby making it possible to reduce the apparent dimensions of the frame materials 2a, 2b, 2c, 2d. Furthermore, by forming gaps 40 between the outer peripheral surfaces of the frame materials 2a, 2b, 2c, 2d and the inner peripheral surfaces 4a, 4b, 4c, 4d of the opening 4 (see FIGS. 1 and 2), a sense of depth can be imparted to the frame materials 4a, 4b, 4c, 4d, improving the design.

[0021] 6 to 9 show a second embodiment of the opening device of the present invention. As with the first embodiment, this opening device is applied to a FIX window installed in an opening 4 on the indoor side of a curtain wall 7, and the cross-sectional shapes of the mounting auxiliary material 1 and frame materials 2a, 2b, 2c, and 2d are different from those of the first embodiment.

[0022] The left and right mounting auxiliary members 1c attached to the left and right inner peripheral surfaces 4c, 4d of the opening 4 are formed with a substantially U-shaped cross section, as shown in Figs. 7 and 9, having a concealed wall 31 fixed to the inner peripheral surfaces 4c, 4d of the opening 4 with screws 30, an exterior concealed wall 32a extending from the exterior end of the concealed wall 31 toward the interior peripheral side, and an interior concealed wall 32b extending from the interior end of the concealed wall 31 toward the interior peripheral side. A heated foaming material 47 is provided along the longitudinal direction between the concealed wall 31 and the left and right inner peripheral surfaces 4c, 4d of the opening 4. The exterior concealed wall 32a has a protrusion 48 at its tip that protrudes toward the interior side. As shown in Figure 6, the upper and lower end faces of the left and right mounting auxiliary materials 1c abut against the upper and lower inner surfaces 4a, 4b of the opening 4, and by providing notches 49 in the protrusions 48 at the upper and lower ends, the longitudinal ends of the upper and lower mounting auxiliary materials 1d are accommodated between the inner and outer visible walls 32a, 32b. The upper and lower mounting auxiliary members 1d attached to the upper and lower inner circumferential surfaces 4a, 4b of the opening 4 are formed in a substantially U-shaped cross section with a concealed wall 31 and exterior and interior facing walls 32a, 32b, similar to the left and right mounting auxiliary members 1c, as shown in Figures 6 and 8. The upper and lower mounting auxiliary members 1d have slightly smaller indoor and outdoor dimensions than the left and right mounting auxiliary members 1c, and as shown in Figure 6, their longitudinal ends are inserted between the interior and exterior facing walls 32a, 32b of the left and right mounting auxiliary members 1c.

[0023] As shown in Figures 8 and 9, the frame materials (upper frame 2a, lower frame 2b, left and right vertical frames 2c, 2d) are formed with a roughly U-shaped cross section with an opening on the inner periphery by the projection wall 50 and the interior and interior facing walls 51a, 51b, and engage from the inner periphery between the exterior facing wall 32a of the mounting auxiliary material 1 and the interior facing wall 32b, and after adjusting the position in the inner and outer periphery directions by appropriately placing spacers 52 between the projection wall 31 of the mounting auxiliary material 1, the mounting auxiliary material 1 is fastened together with the inner periphery surfaces 4a, 4b, 4c, 4d of the opening 4 with screws 53 from the inner periphery. The frame materials on all four sides (upper frame 2a, lower frame 2b, left and right vertical frames 2c, 2d) are formed from shaped materials with the same cross-sectional shape. The interior wall of the frame materials 2a, 2b, 2c, and 2d that forms the glass opening 36 is a removable ridge 5, and the ridge 5 overlaps with a gap on the interior side of the visible wall 32b on the interior side of the mounting support material 1. A gap 40 is formed between the outer peripheral edge of the ridge 5 and the inner peripheral surfaces 4a, 4b, 4c, and 4d of the opening 4. The inner peripheral end of the ridge 5 is formed with a locking portion 55 that locks with a post-installation bead 54 (see Figures 6 and 7). The exterior facing wall 51a which constitutes the glass opening 36 of the frame members 2a, 2b, 2c, 2d is provided with a mounting portion 57 at its inner peripheral end for mounting a pre-fitting bead 56 (see Figs. 6 and 7).

[0024] As shown in Figures 6 and 7, the fireproof glass 3 has its four edges fitted into the glass opening 36 of the four frame materials (upper frame 2a, lower frame 2b, and left and right vertical frames 2c, 2d) and is fixed to the glass opening 36 with a pre-attached bead 56 on the outside of the room and a post-attached bead 54 on the inside of the room.

[0025] Next, a description will be given of a procedure for constructing the opening device 6. First, the left and right mounting auxiliary members 1c are attached to the left and right inner circumferential surfaces 4c, 4d of the opening 4 with screws 30. Next, the upper and lower mounting auxiliary members 1 d are attached to the upper and lower inner circumferential surfaces 4 a, 4 b of the opening 4 with screws 30 . Next, the opening dimension between the upper and lower mounting auxiliary materials 1d is confirmed, and a spacer 52 of an appropriate thickness is placed on the inner side of the projected wall 31 of the mounting auxiliary material 1d according to the opening dimension.Then, the upper frame 2a and the lower frame 2b are engaged with the mounting auxiliary material 1d from the inner side, and the upper frame 2a and the lower frame 2b together with the mounting auxiliary material 1d are fixed to the inner surfaces 4a, 4b of the opening 4 with screws 53 from the inner side. Next, the opening dimension between the left and right mounting auxiliary materials 1c is confirmed, and a spacer 52 of an appropriate thickness is placed on the inner side of the projected wall 31 of the mounting auxiliary material 1c according to the opening dimension.Then, the left and right vertical frames 2c, 2d are engaged with the mounting auxiliary material 1c from the inner side, and the left and right vertical frames 2c, 2d together with the mounting auxiliary material 1c are fixed to the inner surfaces 4c, 4d of the opening 4 with screws 53 from the inner side. Next, after placing a setting block 44 on the lower frame 2b, the fireproof glass 3 is inserted from the inside of the room into the opening formed by the four surrounding frame materials 2a, 2b, 2c, and 2d, and a push-in edge 5 is attached to each of the frame materials 2a, 2b, 2c, and 2d. Then, a retrofit bead 54 is attached to the gap between the inner edge of the four circumferential flanges 5 and the interior side of the fireproof glass 3, and the fireproof glass 3 is fixed in place.

[0026] In this way, in this opening device 6 (second embodiment), the mounting auxiliary material 1 is attached to the inner peripheral surfaces 4a, 4b, 4c, 4d of the opening 4, and the four surrounding frame materials 2a, 2b, 2c, 2d are engaged with the mounting auxiliary material 1 from the inner peripheral side and then adjusted and fixed in position in the inner and outer peripheral directions, so that the four surrounding frame materials 2a, 2b, 2c, 2d can be easily attached, and even if there is an error in the vertical and horizontal dimensions of the opening 4, the error can be absorbed to attach the frame materials 2a, 2b, 2c, 2d, resulting in good workability. Also, since each of the frame materials 2a, 2b, 2c, 2d has a ridge 5 on the indoor side, the fireproof glass 3 can be easily attached from the indoor side. In addition, since this opening device 6 engages the frame materials 2a, 2b, 2c, 2d between the exterior and interior facing walls 32a, 32b of the mounting auxiliary material 1 (see Figures 8 and 9), the frame materials 2a, 2b, 2c, 2d can be protected from flames, and the use of fire-resistant glass 3 can improve fire resistance. Furthermore, in this opening device 6, gaps 40 are formed between the outer peripheral edge of the flange 5 and the inner peripheral surfaces 4a, 4b, 4c, 4d of the opening 4 (see Figures 6 and 7), thereby giving a sense of depth to the frame materials 2a, 2b, 2c, 2d and improving the design.

[0027] As described above, the opening device 6 (first and second embodiments) includes the mounting auxiliary material 1, frame materials 2a, 2b, 2c, and 2d, and fireproof glass 3. The mounting auxiliary material 1 is a long member that is attached to the inner peripheral surfaces 4a, 4b, 4c, and 4d of the opening 4. The frame materials 2a, 2b, 2c, and 2d have a ridge 5 that engage with the mounting auxiliary material 1 from the inner peripheral side and are fixed by adjusting their positions in the inner and outer peripheral directions (see Figs. 1, 2, 6, and 7). This makes it easy to mount the frame materials 2a, 2b, 2c, and 2d and the fireproof glass 3, improving workability. In addition, the provision of the fireproof glass 3 provides fireproof performance. In this opening device 6 (first and second embodiments), the frame members 2a, 2b, 2c, and 2d on all four sides are formed from shaped members with the same cross-sectional shape (see Figs. 1, 2, 6, and 7), so it is possible to reduce costs. Furthermore, in this opening device 6 (first embodiment), in addition to the frame members 2a, 2b, 2c, and 2d on all four sides, the mounting auxiliary members 1 on all four sides are also formed from shaped members with the same cross-sectional shape (see Figs. 1 and 2), so it is possible to reduce costs even further. In this opening device 6 (first and second embodiments), the mounting auxiliary material 1 has a concealed wall 31 fixed to the inner surfaces 4a, 4b, 4c, 4d of the opening 4, and visible walls 32a, 32b provided on the outdoor side and indoor side of the concealed wall 31, and the frame materials 2a, 2b, 2c, 2d have visible walls 38a, 38b or 51a, 51b that overlap with the visible walls 32a, 32b on the inside and outside of the mounting auxiliary material 1 (see Figures 4, 8, 9), thereby improving fire resistance. In this opening device 6 (first embodiment), the mounting auxiliary material 1 is arranged at a position shifted in the indoor / outdoor direction relative to the glass opening 36 of the frame materials 2a, 2b, 2c, and 2d (see Figure 4), thereby making it possible to reduce the apparent dimensions of the frame materials 2a, 2b, 2c, and 2d and maximize the daylighting area.

[0028] The present invention is not limited to the above-described embodiment. The cross-sectional shape and material of the mounting auxiliary material and the frame material can be changed as appropriate. The fireproof glass may be heat-resistant tempered glass, wire-reinforced glass, etc. The present invention is not limited to an inner window installed on the indoor side of a curtain wall, etc., but can also be applied to a window installed in an opening facing the outside of the room. [Explanation of symbols]

[0029] 1,1a,1b,1c,1d Mounting aids 2a Upper frame (frame material) 2b Lower frame (frame material) 2c,2d Vertical frame (frame material) 3. Fireproof glass 4 Openings 5. Edge 6 Opening device

Claims

[Claim 1] An opening device comprising an auxiliary mounting material, a frame material, and fireproof glass, the auxiliary mounting material being a long member attached to the inner peripheral surface of all four sides of an opening, and the frame material having a ridge that engages with the auxiliary mounting material from the inner peripheral side and is fixed with its position adjusted in the inner and outer circumferential directions.

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