Opening device

Abstract

To provide an opening device placed in an opening of a building capable of improving fire resistance.SOLUTION: An opening device includes a door head, a bottom frame, a vertical bone, left and right glass doors, and a matching cover. The vertical bone is attached between the door head and the bottom frame at a midpoint between the left and right direction. The left and right glass doors have the edge members attached to the edges and arranged movable in both directions. The door head and bottom frame are placed between the two frames and can be between the door head and the bottom frame. The edge members attached to the glass doors engage with the vertical bone when the glass doors move in the left and right directions. The matching cover attached to the vertical bone restricts the left and right direction of the glass doors relative to the vertical bone and maintains the engagement of the edge material with the vertical bone.SELECTED DRAWING: Figure 4

Description

Technical Field

[0006] ,

[0007] , , ,

[0001] The present invention relates to an opening device disposed in an opening of a building or the like.

Background Art

[0002] Conventionally, an opening device disposed in an opening of a building has been known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] There is a demand to improve the fire resistance performance when attaching a glass door or the like to an opening device disposed in an opening of a building.

[0005] An object of the present invention is to improve the fire resistance performance of an opening device disposed in an opening of a building.

Means for Solving the Problems

[0006] The opening device according to the embodiment includes an upper frame, a lower frame, vertical members, left and right glass doors, and a call cover. The vertical members are attached between the upper frame and the lower frame at an intermediate position in the left-right direction. Edge members are attached to the side edges of the left and right glass doors, and the left and right glass doors are disposed so as to be movable in the left-right direction between the upper frame and the lower frame. The edge members attached to the glass doors engage with the vertical members by the left-right movement of the glass doors. The call cover is attached to the vertical members and restricts the left-right movement of the glass doors with respect to the vertical members to maintain the engagement state between the edge members and the vertical members.

Effects of the Invention

[0007] According to this embodiment, the fire resistance performance of opening devices placed in openings of buildings can be improved. [Brief explanation of the drawing]

[0008] [Figure 1] This is a longitudinal cross-sectional view of a building opening in which the opening device of the embodiment has been installed. [Figure 2] This is a cross-sectional view of a building opening in which the opening device of the embodiment has been installed. [Figure 3] This is a vertical cross-sectional view of the opening device of the embodiment, where (a) is the AA cross-sectional view in Figure 2 and (b) is the BB cross-sectional view in Figure 2. Note that the cover member is omitted. [Figure 4] This is a cross-sectional view of the opening device of the embodiment. [Figure 5] This diagram shows the vertical frames constituting the opening device of the embodiment, where (a) is an exploded perspective view, (b) is a partial perspective view of the outer vertical frame member, and (c) is a partial perspective view of the inner vertical frame. [Figure 6] This is a diagram of the upper frame constituting the opening device of the embodiment, where (a) is a perspective view and (b) is a partial perspective view. [Figure 7] This is a diagram of the lower frame constituting the opening device of the embodiment, where (a) is a perspective view and (b) is a partial perspective view. [Figure 8] This is a diagram of the vertical frame constituting the opening device of the embodiment, where (a) is a perspective view, (b) is a cross-sectional view, and (c) is a partially exploded perspective view of the lower portion. [Figure 9] This is a diagram of the glass door constituting the opening device of the embodiment, where (a) is an exploded perspective view and (b) is a partial perspective view showing the cross-section of the edge material. [Figure 10] (a) is a perspective view of the cover member constituting the opening device of the embodiment, (b) is a partial perspective view of the cover member, and (c) is an exploded perspective view of the bottom frame of the glass door. [Figure 11] This is a schematic diagram illustrating one of the procedures for constructing the opening device of the embodiment. [Figure 12]It is a schematic diagram for explaining one of the procedures for constructing the opening device of the embodiment. [Figure 13] It is a schematic diagram for explaining one of the procedures for constructing the opening device of the embodiment. [Figure 14] It is a schematic diagram for explaining one of the procedures for constructing the opening device of the embodiment. [Figure 15] It is a schematic diagram for explaining one of the procedures for constructing the opening device of the embodiment. [Figure 16] It is a schematic diagram for explaining one of the procedures for constructing the opening device of the embodiment. [Figure 17] It is a schematic diagram for explaining one of the procedures for constructing the opening device of the embodiment. [Figure 18] It is a schematic diagram for explaining one of the procedures for constructing the opening device of the embodiment. [Figure 19] It is a schematic diagram for explaining one of the procedures for constructing the opening device of the embodiment. [Figure 20] It is a schematic diagram for explaining one of the procedures for constructing the opening device of the embodiment. [Figure 21] It is a schematic diagram for explaining one of the procedures for constructing the opening device of the embodiment. [Figure 22] It is a schematic diagram for explaining one of the procedures for constructing the opening device of the embodiment. [Figure 23] It is a cross-sectional view for explaining one of the procedures for constructing the opening device of the embodiment. (a) is a view before engaging the outdoor glass door with the vertical member, and (b) is a view after engaging the outdoor glass door with the vertical member. [Figure 24] It is a cross-sectional view for explaining one of the procedures for constructing the opening device of the embodiment. (a) is a view before attaching the cover material to the outdoor glass door and the vertical member, and (b) is a view after attaching the cover material to the outdoor glass door and the vertical member. [Figure 25] It is a cross-sectional view of the opening device of another embodiment.

Mode for Carrying Out the Invention

[0009] As an opening device of the embodiment, an example of a FIX window installed in an opening on the indoor side of a curtain wall P arranged on the outer periphery of a building will be described with reference to the drawings.

[0010] (Configuration of the curtain wall) The curtain wall P arranged on the outer peripheral surface of the building is configured by mounting a panel body C such as glass on a curtain wall frame in which a blind B is arranged between a plurality of mullions A arranged on the outer periphery of the building as shown in FIGS. 1 and 2.

[0011] The plurality of mullions A are arranged at intervals in the left - right direction and are connected to the building structure. The mullion A has a mullion main body portion A1 having a hollow portion extending in the up - down direction on the indoor side, and has recesses A2, A2 for mounting the panel body C on both the left and right sides on the outdoor side of the mullion main body portion A1.

[0012] An auxiliary vertical frame A3 is inserted into the indoor side of the recess A2 of the mullion A, and a panel - inter - edge groove is formed by the outdoor wall A4 of the mullion A and the auxiliary vertical frame A3. The panel body C such as double - glazed glass is held via a backup material b and a sealing material s, etc.

[0013] The mullion A is provided with blind - mounting members (not shown) mounted in the recess A2 at each predetermined height by bolts or the like, and the blind B is supported by the blind - mounting members of adjacent mullions A, A and fixed to the mullion A.

[0014] As shown in FIG. 1, the blind B has a panel - inter - edge groove for holding the panel body C in the up - down direction, and the panel body C such as double - glazed glass is held via a backup material b and a sealing material s, etc.

[0015] The blind B is connected to a steel material D having a projected wall D1 extending indoors on the indoor side surface, and a non - combustible material E is arranged on the inner peripheral surface of the projected wall D1 to form the inner periphery of the opening on the indoor side of the curtain wall P.

[0016] (Components of the FIX window) As shown in Figures 1 and 2, the fixed window of this embodiment includes an upper frame 11 fixed to the inner circumference of the opening, a lower frame 12, left and right vertical frames 13, 13, a vertical support 15 installed between the upper frame 11 and the lower frame 12 at an intermediate position in the left-right direction, left and right glass doors 2, 2, and meeting stile covers 16, 16. The following describes each component that makes up a fixed window.

[0017] As shown in Figure 4, the left and right vertical frames 13 each have an outer vertical frame 131 fixed to the left and right vertical inner surfaces of the opening, and an inner vertical frame 132 positioned and fixed to the inner circumference of the outer vertical frame 131. The outer vertical frame 131 and the inner vertical frame 132 are both long members made of a metal material such as aluminum alloy.

[0018] As shown in Figures 4 and 5(a), the outer vertical frame 131 has a recessed wall 131a that abuts against the inner circumferential surface of the opening, and facing walls 131b and 131c that extend in the circumferential direction from the indoor and outdoor ends of the recessed wall 131a, respectively.

[0019] As shown in Figures 4 and 5(a) and 5(c), the inner vertical frame 132 has a front wall 132a, three facing walls 132b, 132c, and 132d that extend in the circumferential direction from the inner side of the front wall 132a and are aligned in the front direction, an inner circumferential front wall 132e that extends in one direction from the inner end of one facing wall 132d in the front direction, and a facing wall 132f that extends in the circumferential direction from one end of the inner circumferential front wall 132e. The inner vertical frame 132 has a central groove 13b that opens to the inner circumference and a groove 13a on the other side in the depth direction, formed by the inner wall 132a and three outer walls 132b, 132c, and 132d.

[0020] As shown in Figure 4, the inner vertical frames 132, 132 of the left and right vertical frames 13, 13 are positioned such that the door-stop edge of the glass door 2 fits into the groove 13a on the other side, with the position of the groove 13a on the other side differing between the interior and exterior sides. In the interior view, the groove 13a on the other side of the left vertical frame 13 is the exterior groove, and the groove 13a on the other side of the right vertical frame 13 is the interior groove.

[0021] The inner vertical frame 132 has a rattle prevention piece 133 made of resin material or the like, with a roughly U-shaped cross-section, positioned at a predetermined location within the groove 13a on the other side. Furthermore, the rattle prevention piece 133 may also have a function to pull the door stop edge of the glass door 2 towards the interior or exterior when the door stop edge of the glass door 2 is fitted into the groove 13a on the other side.

[0022] The inner vertical frame 132 may have a heat-expanded foaming material f132 attached to the inner surface of the other side's visible wall 132b along its longitudinal direction by adhesive or the like, and the gap that occurs between the inner vertical frame 132 and the glass door 2 in the event of a fire may be sealed with the expanded heat-expanded foaming material f132. The anti-vibration piece 133, positioned in the groove 13a on the other side of the inner vertical frame 132, may be provided with a heat-foamed material f133 that is continuous with the heat-foamed material f132 attached to the inner vertical frame 132.

[0023] The upper frame 11 is a long member made of a metal material such as an aluminum alloy, and as shown in Figures 3(b) and 6(a), it has a front wall 111a that abuts against and is fixed to the inner circumferential surface of the opening, an indoor facing wall 111b and an outdoor facing wall 111c that extend in the circumferential direction from the outdoor and indoor ends of the front wall 111a, respectively, and facing walls 111d and 111e that extend in the circumferential direction from the indoor and outdoor ends of the front wall 111a, and three grooves 11a, 11b and 11c are formed that open in the circumferential direction and are aligned in the front direction.

[0024] The lower frame 12 is a long member made of a metal material such as an aluminum alloy, and as shown in Figures 3(b) and 7(a), it has a recessed wall 121a that abuts against and is fixed to the inner circumferential surface of the opening, an indoor facing wall 121b and an outdoor facing wall 121c that extend in the circumferential direction from the indoor and outdoor ends of the recessed wall 121a, respectively, and facing walls 121d and 121e that extend in the circumferential direction from the indoor and outdoor ends of the recessed wall 121a, and three grooves 12a, 12b, and 12c are formed that open in the circumferential direction and are aligned in the recessed direction.

[0025] In the lower frame 12, rails (engaged parts) 121f and 121g are provided projecting inward from the facing wall 121a in the groove portion 12a on the indoor side and the groove portion 12c on the outdoor side, and notches 12d and 12e are formed in the facing wall 121d on the indoor side and the facing wall 121e on the outdoor side at an intermediate position in the left-right direction.

[0026] As shown in Figures 5(b), 6(b), and 7(b), the upper frame 11, lower frame 12, and vertical frame 13 (outer vertical frame 131) may have two lines of heat-expanded foam material f111, f121, and f131 attached to the indoor and outdoor sides of the outer peripheral surfaces of the periphery of the recessed walls 111a, 121a, and 131a, respectively, along the longitudinal direction by adhesive or the like. In the event of a fire, the gaps that occur between the upper frame 11, lower frame 12, and vertical frame 13 and the inner surface of the opening may be sealed with the expanded heat-expanded foam material f111, f121, and f131.

[0027] The vertical frame 15 is made of a metal material such as an aluminum alloy, and as shown in Figures 3(a), 4, and 8, it has a main body portion 151a with a rectangular hollow cross-section, a smoke deflector (engagement portion) 151b provided on one side of the main body portion 151a from the middle in the left-right direction in the depth direction, a covering portion 151c provided on one side of the main body portion 151a from one end in the left-right direction in the depth direction, a smoke deflector (engagement portion) 151b provided on the other side of the main body portion 151a from the middle in the left-right direction in the depth direction, and a covering portion 151c provided on one side of the other side of the main body portion 151a from the other end in the left-right direction in the depth direction, and is a long member with point symmetry in cross-section.

[0028] As shown in Figure 8(a), the vertical rib 15 has cutouts in predetermined ranges near the upper and lower ends in the longitudinal direction (up and down direction) for the smoke deflector (engaging portion) 151b and the covering portion 151c, and at a predetermined height position in the longitudinal direction, the smoke deflector (engaging portion) 151b, 151b are cut out to form a cover material connecting portion 15a that engages with the meeting cover 16.

[0029] The vertical rib 15 has a vertical rib fixing piece 17 made of resin material or the like attached to its lower end. The vertical rib fixing piece 17 has a rectangular block-shaped lower frame fitting portion 17a and a mounting projection 17b that protrudes from the upper surface of the lower frame fitting portion 17a. The mounting projection 17b is inserted from below into the hollow portion of the main body portion 151a of the vertical rib 15, thereby attaching it to the lower end of the vertical rib 15.

[0030] As shown in Figures 3, 4, and 9, the glass door 2 includes heat-resistant glass 20, an edge material 23 attached to the meeting edge (vertical frame edge) of the heat-resistant glass 20, anti-sway materials 21, 21 attached to the upper edge of the heat-resistant glass 20, and a lower frame material 22 attached to the lower edge of the heat-resistant glass 20.

[0031] The edge material 23 that constitutes the glass door 2 is made of a metal material such as an aluminum alloy, and as shown in Figures 4 and 9(b), it has an edge portion 23a into which the meeting edge (vertical frame edge) of the heat-resistant glass 20 is fitted, and a smoke deflector (engaging portion) 23b provided on one side of the edge portion 23a in the depth direction. Furthermore, the edge material 23 is installed such that the side on which the smoke deflector (engaging part) 23b is positioned differs between the exterior glass door 2 and the interior glass door 2. On the exterior glass door 2, the smoke deflector (engaging part) 23b is positioned on the interior side, and on the interior glass door 2, the smoke deflector (engaging part) 23b is positioned on the exterior side.

[0032] As shown in Figure 9(a), the edge material 23 has a smoke deflector (engaging portion) 23b that is notched in a predetermined range near the upper end and near the lower end in the longitudinal direction (vertical direction), and is also notched at a predetermined height position in the longitudinal direction to form notched portions 23c, 23c. As shown in Figure 9(b), the edge material 23 may have a heat-expanded foaming material f23 attached to the inner circumferential surface of the edge portion 23a along the longitudinal direction by adhesive or the like, and the gap that occurs between the edge material 23 and the heat-resistant glass 20 in the event of a fire may be sealed with the expanded heat-expanded foaming material f23.

[0033] The anti-sway members 21 that make up the glass door 2 are made of a resin material or the like, and are short members having a groove 21a into which the upper edge of the heat-resistant glass 20 is fitted, and multiple such members are attached to the upper edge of the heat-resistant glass 20 at appropriate intervals.

[0034] The lower frame material 22 that constitutes the glass door 2 is made of a metal material such as an aluminum alloy and, as shown in Figures 3, 9(a), and 10(c), is a long member with a roughly H-shaped cross-section that has an upper groove portion 22a into which the lower edge of the heat-resistant glass 20 is fitted, and a lower groove portion 22b that accommodates the rails (engaged portions) 121f and 121g of the lower frame 12.

[0035] The lower frame material 22 has base plates 222, 222 on which heat-resistant glass 20 is placed in the upper groove portion 22a, and flat bars (engaging portions) 223, 223 are placed in the lower groove portion 22b so as to be movable (engaged) in the left-right direction with respect to the rails (engaged portions) 121f, 121g of the lower frame 12. The base plate 222 and the flat bar (engaging part) 223, which are placed on the lower frame material 22, are both made of metal materials such as aluminum, and do not easily melt in the event of a fire like resin materials, thus improving fire resistance.

[0036] Furthermore, the lower frame material 22 has edge fixing brackets 224 attached to the meeting side in the left-right direction of the lower groove portion 22b by screws or the like, and is connected to the edge material 23 by the edge fixing brackets 224. Furthermore, the lower frame material 22 has resin end caps 225 attached to the door stop side in the left-right direction.

[0037] The meeting stile cover 16 is made of a metal material such as an aluminum alloy, and as shown in Figures 4, 10(a), and (b), it is a long member with a roughly L-shaped cross-section having a recessed wall 16a that covers the recessed surface of the vertical frame 15 and the edge material 23 of the glass door 2 when installed, and a facing wall 16b that covers the visible surface of the edge material 23 of the glass door 2, and hook members 162, 162 are fixed by adhesive or the like at predetermined height positions on the inner circumferential surface of the recessed wall 16a.

[0038] The hook member 162 is made of a metal material such as steel and has a mounting wall 162a that is attached to the meeting stile cover 16 and a hook portion 162b that bends and rises from the mounting wall 162a. By being fixed to the meeting stile cover 16, the hook portion 162b extends from the inner circumference of the facing wall 16a of the meeting stile cover 16. The above explains the various components that make up a fixed window.

[0039] (Installation procedure for fixed windows) Next, we will explain the installation procedure and configuration of fixed windows. (Step 1) Attaching the outer vertical frame As shown in Figure 11, the outer vertical frame 131 of the vertical frame 13 is positioned so that the outer surface of the recessed wall 131a abuts against the left and right inner vertical surfaces (for example, the inner surfaces of the mullion A) a of the building's opening, and is fixed from the inner side with screws or the like b131.

[0040] (Step 2) Installation of the upper and lower frames As shown in Figure 12, the upper frame 11 is positioned so that the outer surface of the recessed wall 111a abuts against the upper inner surface of the opening in the building (for example, the inner surface of the steel member D connected to the interior side of the transom B) b, and is fixed from the inner side with screws or the like b11. Similarly, the lower frame 12 is positioned so that the outer surface of the recessed wall 121a abuts against the lower inner surface of the building's opening (for example, the inner surface of the steel member D connected to the interior side of the transom B) b, and is fixed from the inner side with screws b12.

[0041] The upper frame 11 and lower frame 12 are formed with a depth dimension approximately the same as the dimension between the inner circumferential surfaces of the interior facing wall 131b and the exterior facing wall 131c of the outer vertical frame 131, and are fixed with their left and right ends fitted inside the interior facing wall 131b and the exterior facing wall 131c of the outer vertical frame 131. In addition, a gap may occur in the upper part of the recessed wall 131a of the outer vertical frame 131 because the left and right ends of the upper frame 11 cannot reach the vertical inner surface of the opening. In such cases, it is desirable to close the gap by placing a gap-filling material 135 in the upper part of the recessed wall 131a of the outer vertical frame 131, as shown in Figure 5(b).

[0042] (Step 3) Installation of the inner vertical frame As shown in Figure 13, the inner vertical frame 132 is fitted between the inner surface of the interior-side facing wall 131b and the exterior-side facing wall 131c of the outer vertical frame 131, such that the facing wall 132a abuts against the facing wall 131a of the outer vertical frame 131, and then fixed from the inner side with screws or the like b132. Furthermore, the left and right inner vertical frames 132 are positioned such that the position of the groove 13a on the other side differs between the indoor and outdoor sides.

[0043] The inner vertical frame 132 is formed with a depth dimension approximately the same as that of the upper frame 11 and the lower frame 12. The inner vertical frame 132, fitted between the inner surface of the interior facing wall 131b and the exterior facing wall 131c of the outer vertical frame 131, is positioned between the upper frame 11 and the lower frame 12.

[0044] (Step 4) Install the upper frame plate on one side. As shown in Figure 14, the upper frame plate 114 is fitted from below into the central groove 11b formed on the inner circumference of the upper frame 11 (arrow y1), and attached to the lower surface of the upper frame 11 on one side (in this embodiment, the left side when viewed from the inside) in the left-right (visible) direction.

[0045] (Step 5) Install the exterior glass door. As shown in Figure 15, the exterior glass door 2 is installed from the interior side between the exterior groove 11c of the upper frame 11 and the exterior groove 12c of the lower frame 12 in a sliding manner (arrow y2), with the edge material 23 facing the other side in the left-right direction (in this embodiment, the right side when viewed from the interior).

[0046] The glass door 2, which is installed between the outdoor groove 11c of the upper frame 11 and the outdoor groove 12c of the lower frame 12, has flat bars (engaging parts) 223, 223 placed in the lower groove 22b of the lower frame material 22 that are placed (engaged) on the upper part of the rail (engaged part) 121g of the lower frame 12, and is positioned to move freely in the left-right direction between the upper and lower grooves.

[0047] (Step 6) Attaching the vertical ribs As shown in Figure 16, the vertical rib 15 is positioned adjacent to the upper frame trim plate 114 which is fitted into the central groove 11b of the upper frame 11, and is fitted between the central groove 11b of the upper frame 11 and the central groove 12b of the lower frame 12 in a sliding manner (arrow y3). The vertical rib 15 has a vertical rib fixing piece 17 fixed to its lower end. After inserting its upper end into the central groove 11b of the upper frame 11, the lower frame fitting portion 17a of the vertical rib fixing piece 17 fixed to its lower end is fitted into the notches 12d and 12e formed in the visible walls 121d and 121e of the lower frame 12 (arrow y4), thereby attaching it between the upper frame 11 and the lower frame 12. The vertical support beam 15, installed between the upper frame 11 and the lower frame 12, is positioned on the interior side of the glass door 2, as shown in Figure 23(a).

[0048] (Step 7) Engaging the vertical frame with the glass door The exterior glass door 2 is moved to one side (the left side) in the left-right direction, and as shown in Figure 23(b), the door-stop edge of the glass door 2 is fitted into the exterior groove 13a of the vertical frame 13, and the smoke deflector (engaging part) 23b of the edge material 23 of the glass door 2 is engaged with the smoke deflector (engaging part) 151b of the vertical frame 15.

[0049] When the glass door 2 is moved to one side (the left side) in the left-right direction, the door stop edge is swallowed into the groove 13a on the exterior side of the vertical frame 13 and fitted into the rattle prevention piece 133 installed in the groove 13a, preventing rattle on the door stop side. At the same time, the smoke deflector (engaging part) 23b of the edge material 23 engages with the smoke deflector (engaging part) 151b of the vertical rib 15, restricting movement in the depth direction.

[0050] (Step 8) Installation of the top frame trim and vertical frame trim. As shown in Figure 17, the upper frame plate 114 on the other side is fitted from below into the other side in the left-right direction of the groove 11b in the center of the upper frame 11, that is, the other side of the vertical rib 15 (arrow y5). Furthermore, the vertical frame plate 134 is fitted from the inner circumference side into the central groove 13b of the other vertical frame 13 in the left-right direction (arrow y6).

[0051] (Step 9) Installation of the bottom frame grate and lock grate. As shown in Figure 18, the lower frame grate 124 is fitted from above into the other side in the left-right direction of the central groove 12b of the lower frame 12, that is, into the other side of the vertical rib 15, and the lock grate 125 is fitted from above into the other side in the left-right direction of the outdoor groove 12c of the lower frame 12 (arrow y7). The lower frame grate 124 and the lock grate 125 are fitted in place and then moved to one side in the left-right direction so that one end abuts against the vertical frame 15 and the exterior glass door 2. The grate end cap 126 is then fitted into the gap created between the lower frame grate 124 and the lock grate 125 and the inner circumference of the other vertical frame 13 in the left-right direction (arrow y8).

[0052] (Step 10) Connect the exterior glass door to the vertical frame. As shown in Figures 19 and 24, the meeting stile cover 16 that covers the edge material 23 of the exterior glass door 2 is attached to the vertical frame 15 so as to cover the other side facing surface in the left-right direction of the vertical frame 15, the other side facing surface in the left-right direction of the edge material 23 of the exterior glass door 2, and the exterior side surface of the edge material 23 of the glass door 2.

[0053] The meeting stile cover 16 can be attached to the vertical frame 15 by inserting the hook portion 162b of the hook member 162 fixed to the inner circumference of the recessed wall 16a through the notch 23c of the edge material 23 of the glass door 2 and dropping it downwards, thereby engaging with the cover material connecting portion 15a provided on the smoke deflector (engaging portion) 151b of the vertical frame 15 (arrow y9). The hook portion 162b of the hook member 162, which engages with the cover material connecting portion 15a of the vertical frame 15, is covered by the covering portion 151c of the vertical frame 15 and is not exposed to the interior side, thus providing excellent aesthetic appeal and reducing the likelihood of malfunctions due to the accumulation of debris in the smoke baffle (engaging portion) 151b, etc.

[0054] The gap between the upper end of the meeting stile cover 16 and the inner surface of the upper frame 11, which is created when the meeting stile cover 16 is dropped in, is preferably sealed by attaching the cover cap 163 (arrow y10).

[0055] Since the meeting stile cover 16 is attached to the vertical frame 15 and covers the visible surface of the exterior glass door 2, it can restrict the movement of the glass door 2 in other directions and maintain the engagement between the glass door 2 and the vertical frame 15. This allows the glass door 2 to be connected to the vertical frame 15 and installed as a fixed window without the need for additional connecting means such as screws. Furthermore, the meeting stile cover 16 attached to the vertical frame 15 can be removed from the vertical frame 15 as needed by following the reverse procedure of installation, thereby releasing the connection of the glass door 2 to the vertical frame 15.

[0056] (Step 11) Install the glass door on the inside. As shown in Figure 20, the interior glass door 2 is installed in the same manner as the exterior glass door 2, between the interior groove 11a of the upper frame 11 and the interior groove 12a of the lower frame 12, with the edge material 23 on one side in the left-right direction (arrow y11).

[0057] The glass door 2, which is installed between the groove 11a on the interior side of the upper frame 11 and the groove 12a on the interior side of the lower frame 12, has flat bars (engaging parts) 223, 223 placed in the lower groove 22b of the lower frame material 22 that are placed (engaged) on the upper part of the rail (engaged part) 121f of the lower frame 12, and is positioned to move freely in the left-right direction between the upper and lower grooves.

[0058] (Step 12) Engagement of the vertical frame and the glass door In the same manner as the exterior glass door 2, the interior glass door 2 is moved to the other side (to the right) in the left-right direction, so that the door-stop edge of the glass door 2 is swallowed into the interior groove 13a of the vertical frame 13, and the smoke deflector (engaging part) 23b of the edge material 23 of the glass door 2 is engaged with the smoke deflector (engaging part) 151b of the vertical frame 15.

[0059] As the glass door 2 moves to the other side (to the right) in the left-right direction, the door stop edge is swallowed into the groove 13a on the interior side of the vertical frame 13 and fitted into the rattle prevention piece 133 installed in the groove 13a, preventing rattle on the door stop side. At the same time, the smoke deflector (engaging part) 23b of the edge material 23 engages with the smoke deflector (engaging part) 151b of the vertical rib 15, restricting movement in the depth direction.

[0060] (Step 13) Installation of the bottom frame grate and lock grate. As shown in Figure 21, the lower frame grate 124 is fitted from above into one side in the left-right direction of the central groove 12b of the lower frame 12, that is, one side of the vertical rib 15, and the lock grate 125 is fitted from above into one side in the left-right direction of the groove 12a on the interior side of the lower frame 12 (arrow y12). The bottom frame trim plate 124 and the lock trim plate 125 are fitted in place and then moved to the other side in the left-right direction so that the other end abuts against the vertical frame 15 and the glass door 2 on the interior side, and the trim plate end cap 126 is attached to the gap created between the bottom frame trim plate 124 and the lock trim plate 125 and the inner circumference of the vertical frame 13 on one side (arrow y13). Then, the vertical frame plate 134 is fitted into the central groove 13b of one of the vertical frames 13 from the inner side (arrow y14).

[0061] (Step 14) Connecting the glass door on the inside to the vertical frame As shown in Figure 22, the meeting stile cover 16 and cover cap 163 that cover the edge material 23 of the interior glass door 2 are attached so as to cover one side of the vertical frame 15 in the left-right direction, one side of the edge material 23 of the interior glass door 2 in the left-right direction, and the interior side of the edge material 23 of the glass door 2 (arrows y15, y16) to complete the installation of the fixed window. The installation of the indoor meeting stile cover 16 and cover cap 163 is the same as the installation of the outdoor meeting stile cover 16, so a detailed explanation is omitted here. The construction procedure and configuration have been explained above.

[0062] (Effects of the opening device of this embodiment) As described above, the opening device of this embodiment uses glass doors, and the meeting portions of the left and right glass doors are integrated via vertical ribs. Therefore, in the event of a fire, the meeting portions of the glass doors can be deformed as a whole, preventing gaps from forming at the meeting portions and improving fire resistance with a simple configuration.

[0063] The opening device of this embodiment has vertical ribs installed between the upper and lower frames at an intermediate position in the left-right direction. When the glass door is connected to the vertical ribs, the edges of the heat-resistant glass of the glass door (upper edge, lower edge, or door stop side edge) are fitted into the grooves of the frame. This makes it difficult for gaps to form between the frame and the heat-resistant glass during a fire, thereby improving fire resistance. Furthermore, the glass door has a flat bar (engaging part) provided on the bottom frame that slidably engages with the rail (engaged part) on the bottom frame, and does not use rollers made of resin or the like. This prevents gaps from forming due to the melting of rollers during a fire, thereby enhancing fire resistance.

[0064] The opening device of this embodiment has a vertical frame installed between the upper and lower frames at an intermediate position in the left-right direction, and the glass door is movably positioned between the upper and lower frames and connectable to the vertical frame. As a result, the glass door can be opened as needed, maintenance on the exterior side of the fixed window can be easily performed, and maintainability can be improved.

[0065] Furthermore, in this embodiment, the opening device uses the edge material of the glass door and the cover material that covers the vertical frame as means for connecting the vertical frame and the glass door. Therefore, the glass door can be connected to the vertical frame without using special fastening means such as screws, which reduces material costs without increasing the number of components and does not increase the effort required for component management.

[0066] -Other Embodiments- The size of the glass doors arranged in the opening device is not limited to uniformity; for example, the left and right dimensions of the glass doors may differ, and the vertical frame may be installed in the middle of the opening device in the left-right direction, even if it is not in the center.

[0067] For example, as shown in Figure 25, the opening device may be configured such that a plurality of vertical ribs 15 are attached between the upper and lower frames at an intermediate position in the left-right direction between the left and right vertical frames 13, 13, and the fixed window is equipped with three or more glass doors. As described above, by forming a fixed window using a combination of multiple vertical frames and multiple glass panels, the size of the fixed window can be appropriately set, and a fixed window with a large area can be formed.

[0068] It goes without saying that the embodiments described above are not intended to limit the inventions described in the claims, but are to be treated as illustrative examples. [Explanation of Symbols]

[0069] 2: Glass door, 20: Heat-resistant glass, 23: Edge material, 23b: Smoke baffle (engaging part), 11: Upper frame, 11a-11c: Groove, 12: Lower frame, 12a-12c: Groove, 13: Vertical frame, 13a-13b: Groove, 15: Vertical frame, 151b: Smoke baffle (engaging part), 16: Meeting stile cover

Claims

[Claim 1] It consists of an upper frame, a lower frame, vertical ribs, left and right glass doors, and meeting stile covers. The vertical ribs are attached between the upper and lower frames at the midpoint in the left-right direction. The left and right glass doors have edge materials attached to the vertical frame's side edges and are positioned to move freely from side to side between the upper and lower frames. The edge material attached to the glass door engages with the vertical frame as the glass door moves from side to side. The meeting stile cover is an opening device attached to the vertical frame that restricts the lateral movement of the glass door relative to the vertical frame and maintains the engagement between the edge material and the vertical frame.

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