Mullion structure and construction method of mullion structure

Abstract

To provide a mullion structure that can reduce the size in the visible direction. [Solution] The mullion structure 30 comprises a frame 2, a glass panel 4 disposed within the frame 2, a mullion 3 extending vertically and positioned to the side of the glass panel 4, formed to protrude further outward X1 than the glass panel 4 in the depth direction, and connecting members 61, 62 connecting the upper and lower ends of the frame 2 and the mullion 3. The connecting members 61, 62 have frame-side fixing parts 612, 622 connected to the frame 2, and mullion-side fixing parts 611, 621 fastened to the upper and lower ends of the mullion 3 by fastening members 611a, 621a. The fastening members 611a, 621a, which are fastened to the upper and lower ends of the mullion 3 and the mullion-side fixing parts 611, 621 in a loosened state, can be tightened from the front of the outdoor side X1.

Description

Technical Field

[0001] The present disclosure relates to a stile structure and a construction method of a stile structure.

Background Art

[0002] Conventionally, a stile structure is known in which stiles are arranged on the left and right sides in the lateral direction of a glass panel provided inside a frame (see, for example, Patent Document 1). In recent years, it has been desired to reduce the size in the finding direction of the stile structure to make it slender.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a stile structure, when constructing the stile structure, there is a concern that the stile and the glass panel come into contact with each other and the glass panel breaks. Therefore, a gap of a certain size is provided between the stile and the glass panel. When a gap of a certain size is provided between the stile and the glass panel, the size in the finding direction of the stile structure tends to increase. Therefore, there is a need for a stile structure that is slender with a small size in the finding direction.

[0005] An object of the present disclosure is to provide a stile structure capable of reducing the size in the finding direction.

Means for Solving the Problems

[0006] This disclosure relates to a mullion structure comprising: a frame; a glass panel disposed within the frame; a mullion extending vertically and positioned laterally to the glass panel, projecting outward from the glass panel in the depth direction; a first connecting member connecting the frame and the upper end of the mullion; and a second connecting member connecting the frame and the lower end of the mullion, wherein the first connecting member has a first frame-side fixing portion connected to the frame and a first mullion-side fixing portion fastened to the upper end of the mullion by a first fastening member, and the first frame-side fixing portion is connected to the frame and the glass panel is disposed within the frame. The present invention relates to a mullion structure in which, in a state in which the upper end of the mullion and the first mullion-side fixing part are loosely fastened together, the first fastening member can be tightened from the front on the outdoor side, and the second connecting member has a second frame-side fixing part connected to the frame and a second mullion-side fixing part fastened to the lower end of the mullion by the second fastening member, and in a state in which the second frame-side fixing part and the frame are connected and the glass panel is placed inside the frame, the second fastening member can be tightened from the front on the outdoor side in which the lower end of the mullion and the second mullion-side fixing part are loosely fastened together. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view of the door / window assembly of the embodiment, seen from the outside. [Figure 2] This is a cross-sectional view along line AA in Figure 1. [Figure 3] Figure 1 is a cross-sectional view along line BB, which is a transverse cross-sectional view of the mullion structure of the embodiment. [Figure 4] This is a perspective view showing the connection structure at the upper end of the mullion. [Figure 5] Figure 4 is a perspective view showing the connection structure at the upper end of the mullion with the outdoor cover and trim member removed. [Figure 6] Figure 5 is a perspective view showing the connection structure at the upper end of the mullion with the heat-insulating resin structure and the outer metal frame member removed. [Figure 7]Figure 7 is a perspective view showing the connection structure at the upper end of the mullion with the glass panel and upper reinforcing member removed. [Figure 8] This perspective view shows the upper end of the mullion body, as seen from the front on the exterior side, being secured to the upper connecting member by tightening a screw visible through the gap between the two glass panels, after loosening it. [Figure 9] This is a perspective view showing the connection structure at the lower end of the mullion. [Figure 10] Figure 9 shows a perspective view of the connection structure at the lower end of the mullion, with the outdoor cover and trim member removed. [Figure 11] Figure 10 is a perspective view showing the connection structure at the lower end of the mullion with the heat-insulating resin structure and the outer metal frame member removed. [Figure 12] Figure 11 is a perspective view showing the connection structure at the lower end of the mullion with the glass panel and lower reinforcing member removed. [Figure 13] This perspective view shows the lower end of the mullion body, as seen from the front on the exterior side, being secured to the lower connecting member by tightening a screw visible through the gap between the two glass panels, after loosening it. [Figure 14] This diagram shows the construction procedure for attaching a mullion to a frame, and is a perspective view showing the state in which the upper connecting member is moved to the upper frame side and connected to the upper frame, and the state in which the mullion body is attached to the upper connecting member connected to the upper frame. [Figure 15] This diagram shows the construction procedure for attaching a mullion to a frame, and is a perspective view showing the mullion body with the upper connecting member attached to the upper frame. [Figure 16] This diagram shows the construction procedure for attaching a mullion to a frame, and is a perspective view showing the state in which the lower connecting member is moved to the lower frame side and connected to the lower frame, and the state in which the mullion body is attached to the lower connecting member that has been connected to the lower frame. [Figure 17] This diagram shows the construction procedure for attaching a mullion to a frame, and is a perspective view showing the mullion body with the lower connecting member attached to the lower frame. [Figure 18] A diagram showing the construction procedure for attaching the upright to the frame body, and showing the procedure for tilting the upright body to one side in the left - right direction. [Figure 19] A perspective view showing the state of arranging the glass panel on the other side in the left - right direction of the upright body at the upper end of the upright body starting from the state shown in FIG. 18. [Figure 20] A perspective view showing the state of arranging the glass panel on the other side in the left - right direction of the upright body at the lower end of the upright body starting from the state shown in FIG. 18. [Figure 21] A diagram showing the construction procedure for attaching the upright to the frame body, and showing the procedure for tilting the upright body to the other side in the left - right direction. [Figure 22] A perspective view showing the state of arranging the glass panel on one side in the left - right direction of the upright body at the upper end of the upright body starting from the state shown in FIG. 21. [Figure 23] A perspective view showing the state of arranging the glass panel on the other side in the left - right direction of the upright body at the lower end of the upright body starting from the state shown in FIG. 21. [Figure 24] A diagram showing the procedure for returning the upright body shown in FIG. 21 from the tilted state to the other side in the left - right direction to the state before tilting and tightening the screws. [Figure 25] A diagram showing the screws visible through the gap between the two glass panels when viewed from the outdoor side in the state where the glass panels are arranged on the outer sides of both sides in the left - right direction of the upright body.

Embodiments for Carrying out the Invention

[0008] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. The fitting 1 of one embodiment will be described. In this specification, the "viewing direction" means the surface direction of the glass panel 4 in the fitting 1 housed in the opening formed in the wall of the building, and the "depth direction" means the thickness direction (i.e., the depth direction) of the facing material. The "depth direction" is also the indoor-outdoor direction. The "viewing surface" means each surface facing the outdoor side and the indoor side in the fitting 1, and the "depth surface" means the surface extending in the indoor-outdoor direction in the fitting 1. In the drawings, the outdoor side of the fitting 1 is defined as the outdoor side X1, and the indoor side of the fitting 1 is defined as the indoor side X2.

[0009] As shown in FIG. 1, the fitting 1 is composed of a continuous window and includes a frame body 2 attached to an opening of a building frame (not shown), a plurality of vertical partitions 3 partitioning the inside of the frame body 2 into a plurality of regions in the left-right direction, and a plurality of glass panels 4 disposed between the frame body 2 and the vertical partitions 3. The frame body 2 is formed by framing an upper frame 21, a lower frame 22, and left and right vertical frames (not shown) in a rectangle.

[0010] As shown in FIG. 1, the plurality of vertical partitions 3 are disposed inside the frame body 2 and extend in the vertical direction. The plurality of vertical partitions 3 are arranged apart from each other in the left-right direction in the middle of the frame body 2 in the left-right direction so as to partition the inside of the frame body 2 into a plurality of regions in the left-right direction. Inside the frame body 2, inside the area surrounded by the frame body 2 and the vertical partitions 3, a glass panel 4 as a facing material is disposed, thereby forming a plurality of FIX window portions 40. The FIX window portion 40 is a fixed window that cannot be opened or closed.

[0011] The vertical partition structure 30 of the vertical partition 3 will be described. In the vertical partition structure 30 shown in FIG. 3, the side on the center line C side in the viewing direction of the vertical partition 3 is referred to as the "inner side in the left-right direction", and the side away from the center line C in the viewing direction of the vertical partition 3 in the left-right direction is referred to as the "outer side in the left-right direction".

[0012] As shown in Figure 1, the mullion structure 30 comprises a frame 2, two glass panels 4 arranged within the frame 2 and spaced adjacent to each other in the left-right direction (lateral direction) of the visible surface, and a mullion 3 positioned on the left-right side of the two glass panels 4 and between the two glass panels 4, extending in the vertical direction.

[0013] As shown in Figures 2 and 3, the glass panel 4 is a double-glazed glass panel in which a glass plate 41 on the indoor side X2 and a glass plate 42 on the outdoor side X1 are arranged with a predetermined gap between them by interposing a spacer 43.

[0014] As shown in Figures 1 to 3, the mullion 3 is formed extending in the vertical direction. The upper end of the mullion 3 is connected to the upper frame 21 of the frame 2, and the lower end is connected to the lower frame 22 of the frame 2. Details of the connection structure of the mullion 3 to the frame 2 will be described later. As shown in Figures 2 and 3, the mullion 3 is formed extending in the depth direction and has a metal mullion body 31, a pair of heat insulating resin structures 34 (heat insulating members), a pair of metal outer metal frame members 35, and a metal outdoor side cover portion 36. In the depth direction, the mullion 3 is formed to protrude outward from the glass panel 4.

[0015] The mullion body 31, the pair of heat-insulating resin structures 34, the pair of outer metal frame members 35, and the outdoor cover portion 36 extend in the vertical direction. The mullion body 31 has an indoor portion 32 and an extension portion 33 in the depth direction. The metal mullion body 31, the pair of metal outer metal frame members 35, and the metal outdoor cover portion 36 are formed from extruded profiles of a metal material such as aluminum.

[0016] As shown in Figure 3, the indoor portion 32 is positioned on the indoor side X2 of the two glass panels 4, and is positioned across the two glass panels 4 in the left-right direction (visible direction) on the indoor side X2 of the two glass panels 4. The indoor portion 32 is hollow inside and has a rectangular cross-section. A pair of airtight seals 321 are attached to the outdoor side X1 surfaces at both ends of the indoor portion 32 in the left-right direction. The pair of airtight seals 321 are pressed against the indoor side X2 surfaces at the left-right mullion 3 sides of the two glass panels 4, respectively, ensuring airtightness between the outdoor side X1 surfaces at both ends of the indoor portion 32 in the left-right direction and the indoor side X2 surfaces at the left-right mullion 3 sides of the two glass panels 4.

[0017] The depth-extending portion 33 extends from the left-right center of the surface of the outdoor X1 of the indoor portion 32 along the centerline C, projecting outwards to the outdoor X1 in the depth direction through the two glass panels 4. The depth-extending portion 33 has a plate-shaped depth-extending plate 331 extending in the depth direction, a tip portion 332 formed at the outdoor X1 end of the depth-extending plate 331, and a pair of hooking protrusions 333 that project outwards on both sides in the left-right direction from the middle of the depth-extending plate 331. The width of the tip portion 332 in the left-right direction is formed to be greater than the width of the depth-extending plate 331 in the left-right direction. The hooking protrusions 333 are formed in an L-shape that opens to the indoor side X2.

[0018] The pair of thermal insulation resin structures 34 are positioned on the outdoor side X1 of the two glass panels 4. The pair of thermal insulation resin structures 34 are positioned on the outside of both sides in the left-right direction (visible direction) of the depth-extending portion 33 of the mullion body 31, sandwiching the outdoor side X1 portion of the depth-extending portion 33 of the mullion body 31 in the left-right direction. Each pair of thermal insulation resin structures 34 is formed in an overall shape that is U-shaped, with the depth-extending portion 33 side of the mullion body 31 being open.

[0019] The thermal insulation resin structure 34 is made of a rigid resin component that has thermal insulation properties and strength. The thermal insulation resin structure 34 is formed from a rigid resin such as rigid polyvinyl chloride. The thermal insulation resin structure 34 is formed from an extruded profile of a resin material such as rigid PVC (polyvinyl chloride).

[0020] Each pair of heat-insulating resin structures 34 comprises a depth-extending resin portion 341 extending in the depth direction, an exterior-interior protruding resin portion 342 projecting from the exterior-side X1 end of the depth-extending resin portion 341 toward the depth-extending portion 33 of the mullion body 31 (inside in the left-right direction of the mullion structure 30), and a projection extending from the interior-side X2 end of the depth-extending resin portion toward the depth-extending portion 33 of the mullion body 31 (inside in the left-right direction of the mullion structure 30). It has an indoor-side inward protruding resin portion 343, an outdoor-side projection 344 that protrudes from the outdoor-side X1 surface to the outdoor-side X1 at the left-right inner end of the indoor-side inward protruding resin portion 343, an indoor-side projection 345 that protrudes from the indoor-side X2 surface to the indoor-side X2 at the left-right inner end of the indoor-side inward protruding resin portion 343, and a recess 346 that is recessed from the indoor-side X2 surface to the outdoor-side X1 of the indoor-side inward protruding resin portion 343.

[0021] The resin portion 341 extending in the depth direction extends along the mullion body 31 so as to cover the left and right outer sides of the portion of the mullion body 31 that is on the outdoor side X1 of the mullion body 31. In the depth direction, the resin portion 341 extends from the portion of the mullion body 31 where the hook projection 333 is formed to the outdoor side X1 beyond the end of the outdoor side X1 of the mullion body 31.

[0022] The resin portion 341 extending in the depth direction has two elongated hollow portions 341a and 341b that extend in the depth direction. The hollow portions 341a and 341b are formed continuously in the depth direction, with hollow portion 341a located on the outdoor side X1 and hollow portion 341b located on the indoor side X2.

[0023] The outdoor-side inward-projecting resin portion 342 has two hollow portions 342a and 342b. The two hollow portions 342a and 342b are connected to the outdoor-side X1 at the end of the outdoor-side X1 of the resin portion 341 that extends in the depth direction, and are formed continuously from the outside to the inside in the left-right direction. Hollow portion 342a is located on the outdoor-side X1 at the end of the outdoor-side X1 of the resin portion 341 that extends in the depth direction, and hollow portion 342b is formed projecting inward from hollow portion 342a in the left-right direction.

[0024] The indoor-facing inward-projecting resin portion 343 has two hollow portions 343a and 343b. The two hollow portions 343a and 343b are connected to the indoor-facing end of the inward-extending resin portion 341 on the indoor-facing side X2, and are formed continuously from the outside to the inside in the left-right direction. Hollow portion 343a is located on the indoor-facing end of the inward-extending resin portion 341 on the indoor-facing side X2, and hollow portion 343b is formed projecting inward from hollow portion 343a in the left-right direction.

[0025] The outdoor projection 344 is hooked onto hooking projections 333 that protrude outward on both sides in the left-right direction from the middle of the depth-direction extension plate 331 of the depth-direction extension portion 33. The heat insulating resin structure 34 is attached to the mullion body 31 by the outdoor projection 344 being hooked onto and engaged with the hooking projections 333.

[0026] The pair of outer metal frame members 35 are positioned on the left-right outer side of the pair of heat-insulating resin structures 34 so as to cover the perimeter of the pair of heat-insulating resin structures 34. Each of the pair of outer metal frame members 35 has a depth-extending metal plate 351 positioned on the left-right outer side of the heat-insulating resin structure 34 and extending in the depth direction, an outer-inner metal plate 352 extending in the left-right direction from the outer-side X1 end of the depth-extending metal plate 351, a protruding plate 353 projecting to the indoor side X2 from the outer-inner end of the outer-inner metal plate 352, an indoor-inner metal plate 354 extending in the left-right direction from the outer-inner end of the depth-extending metal plate 351, and a projection 355 projecting to the outdoor side X1 from the outer-side inner end of the indoor-inner metal plate 354.

[0027] The metal plate 351 extending in the depth direction extends along the resin portion 341 extending in the depth direction of the thermal insulation resin structure 34 on the left and right outer side of the resin portion 341 extending in the depth direction of the thermal insulation resin structure 34. The metal plate 352 on the outdoor side X1 of the resin portion 342 protruding from the outdoor side of the thermal insulation resin structure 34 extends along the resin portion 342 protruding from the outdoor side of the thermal insulation resin structure 34.

[0028] The protruding plates 353 of the pair of outer metal frame members 35 are arranged so that their inner surfaces in the left-right direction are in contact with each other on the inner side of the end of the outdoor side X1. The protruding plates 353 of the pair of outer metal frame members 35 are arranged in this overlapping state between the pair of outdoor-side inner protruding resin parts 342 of the pair of heat insulating resin structures 34.

[0029] The indoor-side metal plate 354 is positioned along the indoor-side X2 surface of the hollow portions 343a and 343b of the indoor-side protruding resin portion 343. The projection 355 is hooked into the recess 346 of the heat-insulating resin structure 34. By hooking the projection 355 into the recess 346 of the heat-insulating resin structure 34, the outer metal frame member 35 is positioned on the outer periphery of the heat-insulating resin structure 34.

[0030] With a pair of outer metal frame members 35 attached to the left-right outer surfaces of a pair of heat-insulating resin structures 34, a backup material 37 is placed between the indoor X2 surface of the hollow portion 343b of the indoor protruding resin portion 343 of the heat-insulating resin structure 34 and the outdoor X1 surface of the left-right mullion 3 side end of the glass panel 4. On the left-right outer surface of the backup material 37, a sealant 38 is applied between the indoor inner metal plate 354 of the outer metal frame member 35 and the outdoor X1 surface of the glass panel 4.

[0031] With a pair of outer metal frame members 35 attached to the left-right outer sides of a pair of heat-insulating resin structures 34, the indoor side X2 surface of the indoor side metal plate 354 of the outer metal frame member 35 and the indoor side X2 surface of the hollow portion 343b of the indoor side protruding resin portion 343 of the heat-insulating resin structure 34 are pressing the outdoor side X1 surface of the left-right mullion 3 side end of the glass panel 4 against the indoor side X2 via a backup material 37 and a sealing material 38.

[0032] As a result, the pair of outer metal frame members 35 push the visible exterior X1 of each of the two glass panels 4 toward the interior X2 at the ends of the two glass panels 4 on the mullion 3 side in the left-right direction. Thus, the outer metal frame members 35 function as retaining trim members that push the ends of the glass panels 4 on the mullion 3 side in the left-right direction. The pair of outer metal frame members 35, along with the airtight material 321 positioned at the outer end of the interior portion 32 of the mullion 3 positioned on the interior X2, sandwich the ends of the glass panels 4 on the mullion 3 side in the left-right direction and fix the ends of the glass panels 4 on the mullion 3 side in the left-right direction.

[0033] Furthermore, a pair of heat-insulating resin structures 34, made of rigid resin, are positioned on the left-right inner side of the pair of outer metal frame members 35. Therefore, together with the outer metal frame members 35, the pair of heat-insulating resin structures 34 push the visible surface on the outdoor side X1 toward the indoor side X2 at the left-right mullion 3 side end of each of the two glass panels 4, and fix the left-right mullion 3 side end of the glass panel 4 together with the indoor side portion 32 of the mullion 3 positioned on the indoor side X2.

[0034] In this way, the indoor X2 surface of the indoor inner metal plate 354 of the pair of outer metal frame members 35 and the indoor X2 surface of the hollow portion 343b of the indoor inner protruding resin portion 343 of the heat insulating resin structure 34 can be fixed between the glass panel 4 and the airtight material 321 placed at the outer end of the indoor portion 32 of the mullion body 31, sandwiching the end of the glass panel 4 on the mullion 3 side in the left-right direction. Since the heat insulating resin structure 34 is made of a rigid resin material, together with the outer metal frame members 35, the end of the glass panel 4 on the mullion 3 side in the left-right direction can be firmly fixed between the indoor portion 32 of the mullion body 31 and the heat insulating resin structure 34, sandwiching the end of the glass panel 4 on the mullion 3 side in the left-right direction in the depth direction.

[0035] The outdoor cover portion 36 is formed in a U-shape in cross-section, with the indoor side X2 being open. The outdoor cover portion 36 is attached to the outdoor side X1 ends of the pair of outdoor metal frame members 35 by engaging with the outdoor side X1 portion of the outdoor side inner metal plate 352 of the pair of outdoor metal frame members 35, when the pair of outdoor metal frame members 35 are attached to the left and right outer sides of the pair of heat insulating resin structures 34.

[0036] Next, the connection structure of the mullion 3 to the frame 2 in the mullion structure 30 will be described. As shown in Figures 1 and 2, the upper end of the mullion 3 is connected to the upper frame 21 of the frame 2, and the lower end is connected to the lower frame 22 of the frame 2. Glass panels 4 are arranged on the outer sides of both the left and right sides of the mullion 3. The mullion 3 is located on the left and right sides of the two glass panels 4 and is positioned between the two glass panels 4. In this embodiment, the mullion 3 is arranged on both the left and right sides of the glass panel 4, but it is not limited to this, and the mullion 3 may be arranged on only one side of the glass panel 4 in the left and right directions.

[0037] First, the connection structure in which the upper end of the mullion 3 is connected to the upper frame 21 of the frame 2 will be described. As shown in Figures 4 to 7, the upper end of the mullion 3 is connected to the upper frame 21 of the frame 2. As shown in Figures 4 and 5, a trim member 211 is attached to the lower part of the outdoor side X1 of the upper frame 21 on both the left and right outer sides of the mullion 3.

[0038] As shown in Figure 7, the upper end of the mullion 3 is fixed to the upper frame 21 by an upper connecting member 61 (first connecting member), and as shown in Figures 6 and 7, it is fixed to the upper connecting member 61 fixed to the upper frame 21 by an upper reinforcing member 71 (first reinforcing member). The upper connecting member 61 connects the upper frame 21 and the upper end of the mullion 3. The upper reinforcing member 71 connects the upper end of the projection-oriented extension portion 33 of the mullion body 31 of the mullion 3 to the upper connecting member 61.

[0039] As shown in Figures 6 and 7, the upper end of the mullion body 31 of mullion 3 has a notch 311 formed in the depth-extending portion 33, which is cut out for a predetermined length downward from the upper end. The depth-extending portion 33 of the mullion body 31 is formed to be shorter than the interior portion 32 at the upper end in the vertical direction. The upper end of the depth-extending portion 33 of the mullion body 31 is formed by cutting out the notch 311 to avoid the portion connected by the screw 611a.

[0040] As shown in Figure 7, the visible surface 32a on the outdoor side X1 of the upper end of the indoor side portion 32 of the mullion 3 is exposed to the outdoor side X1 in the notched portion 311 where the extension portion 33 of the mullion body 31 in the depth direction is cut out. The mullion-side fixing portion 611 of the upper connecting member 61 is connected to the visible surface 32a on the outdoor side X1 of the upper end of the indoor side portion 32 of the mullion 3.

[0041] The upper connecting member 61 has a mullion-side fixing portion 611 (first mullion-side fixing portion) which is fixed to the upper end of the mullion 3 by a screw 611a (first fastening member), and a frame-side fixing portion 612 (first frame-side fixing portion) which is fixed to the upper frame 21. The mullion-side fixing portion 611 is formed in a plate shape with thickness in the depth direction, has a predetermined width in the left-right direction, and extends in the up-down direction (face direction). The mullion-side fixing portion 611 is fixed by a screw 611a to the face surface 32a of the outdoor side X1 of the upper end of the indoor side portion 32 of the mullion 3.

[0042] As shown in Figures 7 and 8, the screw 611a has a shaft portion 6a (first shaft portion) extending in the depth direction and a head portion 6b (first head portion) positioned at the outdoor side X1 end of the shaft portion 6a. The shaft portion 6a penetrates the mullion-side fixing portion 611 of the upper connecting member 61 and the outdoor side X1 facing surface 32a of the upper end of the indoor side portion 32 of the mullion 3. The head portion 6b is positioned on the outdoor side X1 facing surface of the mullion-side fixing portion 611 of the upper connecting member 61. The screw 611a fastens the mullion-side fixing portion 611 and the outdoor side X1 facing surface 32a of the upper end of the indoor side portion 32 of the mullion 3 with the shaft portion 6a extending in the depth direction and the head portion 6b facing the outdoor side X1, so that it can be tightened or loosened by rotating it with a screwdriver D from the outdoor side X1 of the mullion 3.

[0043] As shown in Figure 8, with the upper connecting member 61 connected to the frame-side fixing portion 612 and the upper frame 21, and with the glass panel 4 positioned inside the frame 2, the screw 611a, which is fastened with the upper end of the mullion 3 and the mullion-side fixing portion 611 of the upper connecting member 61, can be tightened from the front of the outdoor side X1 while the connection is loosened. The screw 611a can be tightened by rotating its head 6b from the front of the outdoor side X1 with the upper connecting member 61 connected to the frame-side fixing portion 612 and the upper frame 21, and with the glass panel 4 positioned inside the frame 2.

[0044] As shown in Figure 7, the frame-side fixing portion 612 is formed in the shape of a plate that bends horizontally from the upper end of the mullion-side fixing portion 611 toward the outdoor side X1. The frame-side fixing portion 612 is formed in the shape of a plate with thickness in the vertical direction and extends in the left-right direction. The frame-side fixing portion 612 is formed in the shape of a T when viewed from below. The frame-side fixing portion 612 has a horizontal plate 6121 that extends in the left-right direction and a protruding plate 6122 that protrudes toward the outdoor side X1 from the left-right central part of the horizontal plate 6121.

[0045] The horizontally extending transverse plate 6121 has its central portion in the horizontal direction connected to the upper end of the vertical fixing portion 611, is formed in a plate shape with thickness in the vertical direction, has a predetermined width in the depth direction and extends in the horizontal direction. The portions at both ends in the horizontal direction of the horizontally extending transverse plate 6121 are fixed to the lower surface of the upper frame 21 by screws 612a.

[0046] The protruding plate 6122 is formed continuously with the outdoor side X1 of the horizontally extending horizontal plate 6121. The protruding plate 6122 is formed in a plate shape with thickness in the vertical direction, has a predetermined width in the horizontal direction, and protrudes outwards from the outdoor side X1 from the central part in the horizontal direction at the end of the outdoor side X1 of the horizontally extending horizontal plate 6121.

[0047] As shown in Figures 6 and 7, the upper reinforcing member 71 has a pair of reinforcing parts 711. The pair of reinforcing parts 711 are fixed to the lower surface of the protruding plate 6122 of the upper connecting member 61, while sandwiching and fixing the upper end of the projection portion 33 of the mullion body 31 in the left-right direction.

[0048] Each pair of reinforcing parts 711 has a plate-like shape with thickness in the left-right direction, a width in the depth direction, and extends in the vertical direction, and a protruding fixing plate 7112 that protrudes outward in the left-right direction by a predetermined width from the upper end of the clamping vertical plate 7111.

[0049] The pair of vertical plates 7111 of the pair of reinforcing parts 711 are fixed together with screws 711a, sandwiching the upper end of the projection-extending part 33 of the mullion body 31 in the left-right direction. The screws 711a are fixed together with the vertical plates 7111 and the upper end of the projection-extending part 33 of the mullion body 31, with the shaft portion extending in the left-right direction.

[0050] The protruding fixing plate 7112 is formed in a plate shape with thickness in the vertical direction and protrudes horizontally outward in the left-right direction by a predetermined width from the upper end of the vertical plate 7111. The protruding fixing plate 7112 is positioned on the lower surface of the protruding plate 6122 of the upper connecting member 61. The protruding fixing plate 7112 is fixed to the protruding plate 6122 of the upper connecting member 61 by screws 711b.

[0051] The upper end of the mullion 3 is fixed to the upper frame 21 by an upper connecting member 61 (first connecting member), and in this state, with the upper connecting member 61 fixed to the upper frame 21 by an upper reinforcing member 71 (first reinforcing member), as shown in Figures 6 and 7, two glass panels 4 are arranged on the left and right outer sides of the indoor side X2 portion of the mullion body 31. As shown in Figure 6, a pair of heat insulating resin structures 34 are attached to the left and right outer sides of the mullion body 31. As shown in Figures 5 and 6, a pair of outer metal frame members 35 are attached to the left and right outer sides of the pair of heat insulating resin structures 34.

[0052] Next, the connection structure in which the lower end of the mullion 3 is connected to the lower frame 22 of the frame 2 will be described. As shown in Figures 9 to 12, the lower end of the mullion 3 is connected to the lower frame 22 of the frame 2. As shown in Figures 9 and 10, a trim member 221 is attached to the upper part of the outdoor side X1 of the lower frame 22 on both the left and right outer sides of the mullion 3.

[0053] As shown in Figure 12, the lower end of the mullion 3 is fixed to the lower frame 22 by a lower connecting member 62 (second connecting member), and as shown in Figures 11 and 12, it is fixed to the lower connecting member 62 fixed to the lower frame 22 by a lower reinforcing member 72 (second reinforcing member). The lower connecting member 62 connects the lower frame 22 and the lower end of the mullion 3. The lower reinforcing member 72 connects the lower end of the projection-oriented extension portion 33 of the mullion body 31 of the mullion 3 to the lower connecting member 62.

[0054] As shown in Figures 11 and 12, the lower end of the mullion body 31 of mullion 3 has a notch 312 formed in the depth-extending portion 33, which is cut out for a predetermined length upward from the lower end. The depth-extending portion 33 of the mullion body 31 is formed to be shorter than the interior portion 32 at the lower end in the vertical direction. The lower end of the depth-extending portion 33 of the mullion body 31 is formed by cutting out the notch 312 to avoid the portion connected by the screw 621a.

[0055] As shown in Figure 12, the visible surface 32b on the outdoor side X1 of the lower end of the indoor side portion 32 of the mullion 3 is exposed to the outdoor side X1 in the notched portion 312 where the extension portion 33 of the mullion body 31 in the depth direction is cut out. The mullion-side fixing portion 621 of the lower connecting member 62 is connected to the visible surface 32b on the outdoor side X1 of the lower end of the indoor side portion 32 of the mullion 3.

[0056] The lower connecting member 62 has a mullion-side fixing portion 621 (second mullion-side fixing portion) which is fixed to the lower end of the mullion 3 by a screw 621a (second fastening member), and a frame-side fixing portion 622 (second frame-side fixing portion) which is fixed to the lower frame 22. The mullion-side fixing portion 621 is formed in a plate shape with thickness in the depth direction, has a predetermined width in the left-right direction, and extends in the up-down direction (face direction). The mullion-side fixing portion 621 is fixed by a screw 621a to the face surface 32b of the outdoor side X1 of the lower end of the indoor side portion 32 of the mullion 3.

[0057] As shown in Figures 12 and 13, the screw 621a has a shaft portion 6a (first shaft portion) extending in the depth direction and a head portion 6b (first head portion) positioned at the outdoor side X1 end of the shaft portion 6a. The shaft portion 6a penetrates the mullion-side fixing portion 621 of the lower connecting member 62 and the outdoor side X1 visible surface 32a of the lower end of the indoor side portion 32 of the mullion 3. The head portion 6b is positioned on the outdoor side X1 side of the mullion-side fixing portion 621 of the lower connecting member 62. The screw 621a fastens the mullion-side fixing portion 621 and the outdoor side X1 visible surface 32a of the upper end of the indoor side portion 32 of the mullion 3 with the head portion 6b facing the outdoor side X1, so that it can be tightened or loosened by rotating it with a screwdriver D from the outdoor side X1 of the mullion 3.

[0058] As shown in Figure 13, with the lower connecting member 622 connected to the frame-side fixing portion 622 and the lower frame 22, and with the glass panel 4 positioned inside the frame 2, the screw 621a, which is fastened with the lower end of the mullion 3 and the mullion-side fixing portion 621 of the lower connecting member 62, can be tightened from the front of the outdoor side X1 while the screw 621a is loosened. With the lower connecting member 622 connected to the frame-side fixing portion 622 and the lower frame 22, and with the glass panel 4 positioned inside the frame 2, the screw 621a can be tightened by rotating its head 6b from the front of the outdoor side X1.

[0059] As shown in Figure 12, the frame-side fixing portion 622 is formed in the shape of a plate that extends horizontally from the lower end of the mullion-side fixing portion 621 toward the outdoor side X1. The frame-side fixing portion 622 is formed in the shape of a plate with thickness in the vertical direction and extends in the left-right direction. The frame-side fixing portion 622 is formed in the shape of a T when viewed from above. The frame-side fixing portion 622 has a horizontal plate 6221 that extends in the left-right direction and a protruding plate 6222 that projects toward the outdoor side X1 from the left-right central part of the horizontal plate 6221.

[0060] The horizontally extending horizontal plate 6221 has its central part in the horizontal direction connected to the lower end of the vertical fixing part 621, is formed in a plate shape with thickness in the vertical direction, has a predetermined width in the depth direction and extends in the horizontal direction. The portions at both ends in the horizontal direction of the horizontally extending horizontal plate 6221 are fixed to the upper surface of the lower frame 22 by screws 622a.

[0061] The protruding plate 6222 is formed continuously with the outdoor side X1 of the horizontally extending horizontal plate 6221. The protruding plate 6222 is formed in a plate shape with thickness in the vertical direction, has a predetermined width in the horizontal direction, and protrudes outwards from the outdoor side X1 from the central part in the horizontal direction at the end of the outdoor side X1 of the horizontally extending horizontal plate 6221.

[0062] As shown in Figures 11 and 12, the lower reinforcing member 72 has a pair of reinforcing parts 721. The pair of reinforcing parts 721 are fixed to the upper surface of the protruding plate 6222 of the lower connecting member 62, while sandwiching and fixing the lower end of the projection portion 33 of the mullion body 31 in the left-right direction.

[0063] Each pair of reinforcing parts 721 has a clamping vertical plate 7211 that is formed in a plate shape with thickness in the left-right direction and width in the depth direction and extends in the vertical direction, and a protruding fixing plate 7112 that protrudes outward in the left-right direction by a predetermined width from the lower end of the clamping vertical plate 7211.

[0064] The pair of vertical plates 7211 of the pair of reinforcing parts 721 are fixed together with screws 721a, sandwiching the lower end of the projection-extending part 33 of the mullion body 31 in the left-right direction. The screws 721a are fixed together with the vertical plates 7211 and the lower end of the projection-extending part 33 of the mullion body 31, with the screw 721a having its shaft extended in the left-right direction.

[0065] The protruding fixing plate 7212 is formed in a plate shape with thickness in the vertical direction and protrudes horizontally outward in the left-right direction by a predetermined width from the lower end of the vertical plate 7211. The protruding fixing plate 7212 is positioned on the upper surface of the protruding plate 6222 of the lower connecting member 62. The protruding fixing plate 7212 is fixed to the protruding plate 6222 of the lower connecting member 62 by screws 721b.

[0066] The lower end of the mullion 3 is fixed to the lower frame 22 by a lower connecting member 62 (second connecting member), and in this state, fixed to the lower connecting member 62 fixed to the lower frame 22 by a lower reinforcing member 72 (second reinforcing member), as shown in Figures 11 and 12, two glass panels 4 are arranged on the left and right outer sides of the indoor side X2 portion of the mullion body 31. As shown in Figure 11, a pair of heat insulating resin structures 34 are attached to the left and right outer sides of the mullion body 31. As shown in Figures 10 and 11, a pair of outer metal frame members 35 are attached to the left and right outer sides of the pair of heat insulating resin structures 34.

[0067] Next, the procedure for constructing the mullion structure 30 will be explained. First, as shown in Figures 14 and 15, the upper connecting member 61 is fixed to the upper frame 21 by connecting the frame-side fixing portion 612 of the upper connecting member 61 to the upper frame 21. At the same time, as shown in Figures 16 and 17, the lower connecting member 62 is fixed to the lower frame 22 by connecting the lower connecting member 62 to the frame-side fixing portion 622 of the lower frame 22.

[0068] Then, as shown in Figures 14 and 15, the upper end of the mullion 3 is fastened to the mullion-side fixing portion 611 of the upper connecting member 61 connected to the upper frame 21 with screws 611a, and as shown in Figures 16 and 17, the lower end of the mullion 3 is fastened to the mullion-side fixing portion 621 of the lower connecting member 62 connected to the lower frame 22 with screws 621a (mullion connection process).

[0069] Next, as shown in the left and center diagrams of Figure 18, using a screwdriver D, the screw 611a fastening the upper end of the mullion 3 to the mullion-side fixing portion 611 of the upper connecting member 61 is loosened by rotating the screw 611a's head 6b in the loosening direction from the front of the outdoor side X1. At the same time, the screw 621a fastening the lower end of the mullion 3 to the mullion-side fixing portion 621 of the lower connecting member 62 is loosened by rotating the screw 621a's head 6b in the loosening direction from the front of the outdoor side X1 (fastening member loosening step). By loosening the screw 611a, the mullion body 31 can be tilted to one side (left side of Figure 18) or the other side (right side of Figure 18) in the left-right direction relative to the upper connecting member 61 and the lower connecting member 62.

[0070] Subsequently, as shown in the right-hand diagram of Figure 18, the tip of the projection-extending portion 33 of the mullion body 31 is tilted to one side in the left-right direction (visible direction) (left side in Figure 18) on the outdoor side X1 (mullion tilting process). This tilts the entire mullion body 31 to one side in the left-right direction (left side in Figure 18) relative to the upper connecting member 61 and the lower connecting member 62.

[0071] Then, as shown in the left and center diagrams of Figures 19, 20, and 21, the entire mullion body 31 is tilted to one side in the left-right direction (left side in Figure 18) relative to the upper connecting member 61 and the lower connecting member 62, and the glass panel 4 is placed on the other side in the left-right direction (visible direction) of the portion of the mullion body 31 that extends in the depth direction within the frame 2 (glass panel placement step).

[0072] Next, as shown in the center view of Figure 21, with the glass panel 4 positioned on the other side of the mullion body 31 in the left-right direction, the tip of the extension portion 33 of the mullion body 31 in the left-right direction (left side in Figure 21) is tilted to the other side in the left-right direction (right side in Figure 21) (mulch tilting step), as shown in the center view and right view of Figure 21. This tilts the entire mullion body 31 to the other side in the left-right direction (right side in Figure 21) relative to the upper connecting member 61 and the lower connecting member 62.

[0073] Subsequently, as shown in Figures 22, 23, the leftmost figure and the second figure from the left in Figure 24, the entire mullion body 31 is tilted to the other side in the left-right direction (right side in Figure 24) relative to the upper connecting member 61 and the lower connecting member 62, and the glass panel 4 is placed on one side in the left-right direction (visible direction) of the extension portion 33 of the mullion body 31 in the depth direction within the frame 2 (glass panel placement step).

[0074] Then, as shown in the second and third figures from the left in Figure 24, the mullion 3 is returned from its tilted state to its original state (mutillion tilt return process).

[0075] Next, as shown in the third figure from the left and the rightmost figure in Figure 24, a screwdriver D is inserted into the gap between the two glass panels 4 positioned on the outside of both sides in the left-right direction, flanking the mullion body 31, and the screws 611a and 621a are tightened from a loosened state. As a result, the upper side of the mullion 3 is connected to the frame-side fixing part 612 of the upper connecting member 61 and the upper frame 21, and the glass panel 4 is positioned inside the frame 2. The screw 611a, which was fastened in a loosened state between the upper end of the mullion 3 and the mullion-side fixing part 611 of the upper connecting member 61, is tightened from the front of the outdoor side X1 by rotating the head 6b of the screw 611a toward the tightening side. Furthermore, at the lower side of the mullion 3, with the frame-side fixing portion 622 of the lower connecting member 62 connected to the lower frame 22 and the glass panel 4 positioned inside the frame 2, the screw 621a, which was fastened with the lower end of the mullion 3 and the mullion-side fixing portion 621 of the lower connecting member 62 in a loosened state, is tightened from the front of the outdoor side X1 by rotating the head 6b of the screw 621a toward the tightening side (fastening member tightening process).

[0076] Here, as shown in Figures 8, 13, and 25, a notch 311 is formed at the upper end of the mullion body 31, and a notch 312 is formed at the lower end of the mullion body 31. Furthermore, a gap is formed between the two glass panels 4 in the left-right direction, into which the shaft of the screwdriver D can be inserted. Therefore, as shown in Figures 8 and 13, the screwdriver D can be inserted between the two glass panels 4 at the upper and lower ends of the mullion body 31 to tighten the screws 611a and 621a.

[0077] Subsequently, as shown in Figures 6 and 7, the upper reinforcing member 71 connects the upper end of the projection-extending portion 33 of the projection-extending portion 33 of the projection-extending portion 31 of the projection-extending portion 31 of the projection-extending portion 31 of the projection-extending portion 31 of the projection-extending portion 33 of the projection-extending portion 31 of the projection-extending portion 31 of the projection-extending portion 31 of the projection-extending portion 31 of the projection-extending portion 31 of the projection-extending portion 31 of the projection-extending portion 31 of the projection-extending portion 31 of the projection-extending portion 31 of the projection-extending portion 622 of the projection-extending portion 622 of the projection-extending portion 622 of the projection-extending portion 622 of the projection-extending portion 622 of the projection-extending portion 622 of the projection-extending portion 622 of the projection-extending portion 622 of the projection-extending portion 622 of the projection-extending portion 622 of the projection-extending portion 31

[0078] Then, as shown in Figures 6 and 11, a pair of heat-insulating resin structures 34 are attached to the left and right outer sides of the mullion body 31, and a pair of outer metal frame members 35 are attached to the left and right outer sides of the pair of heat-insulating resin structures 34. The pair of heat-insulating resin structures 34 and the pair of outer metal frame members 35 may be pre-assembled into a single unit using double-sided tape and fitting.

[0079] Next, as shown in Figures 5 and 10, the outdoor cover portion 36 is attached to the outdoor side X1 of the mullion 3. As shown in Figures 4 and 5, the trim members 211 are attached to the outer sides of both the left and right sides of the mullion 3 at the top of the mullion body 31. As shown in Figures 9 and 10, the trim members 221 are attached to the outer sides of both the left and right sides of the mullion 3 at the bottom of the mullion body 31.

[0080] The mullion structure 30 of this embodiment comprises a frame 2, a glass panel 4 disposed within the frame 2, a mullion 3 extending vertically and positioned to the side of the glass panel 4, and formed to protrude outward X1 from the glass panel 4 in the depth direction, and connecting members (upper connecting member 61, lower connecting member 62) connecting the upper and lower ends of the frame 2 and the mullion 3, the connecting members (upper connecting member 61, lower connecting member 62) are fixed to the frame side and connected to the frame 2 (upper frame 21, lower frame 22) The frame has parts 612 and 622, and mullion-side fixing parts 611 and 621 that are fastened to the upper and lower ends of the mullion 3 by screws 611a and 621a. With the frame-side fixing parts 612 and 622 connected to the frame 2 (upper frame 21, lower frame 22) and the glass panel 4 placed inside the frame 2, the fastening members 611a and 621a, which are fastened to the upper and lower ends of the mullion 3 and the mullion-side fixing parts 611 and 621 in a loosened state, can be tightened from the front of the outdoor side X1.

[0081] As a result, by loosening the screws 611a and 621a from the front of the exterior side X1, the connecting members (upper connecting member 61, lower connecting member 62) and the upper and lower ends of the mullion 3 can be tilted to one side in the left-right direction, allowing the glass panel 4 to be positioned on the other side of the mullion 3 in the left-right direction. Therefore, the gap between the mullion 3 and the glass panel 4 can be reduced, allowing the glass panel 4 to be positioned with a smaller gap, thus reducing the size of the mullion structure 30 in the left-right direction and improving its aesthetic appeal.

[0082] In this embodiment, the mullion-side fixing portions 611 and 621 of the connecting members (upper connecting member 61 and lower connecting member 62) are formed in a plate shape extending in the visible direction, and the screws 611a and 621a are configured to have a shaft portion 6a extending in the depth direction and a head portion 6b positioned at the outdoor side X1 end of the shaft portion 6a. The shaft portion 6a passes through the upper and lower ends of the mullion 3 and the mullion-side fixing portions 611 and 621 of the connecting members (upper connecting member 61 and lower connecting member 62), and the head portion 6b is positioned on the outdoor side X1 side of the mullion-side fixing portions 611 and 621 of the connecting members (upper connecting member 61 and lower connecting member 62), allowing tightening by rotating the head portion 6b from the front of the outdoor side X1. As a result, the screws 611a and 621a can be loosened or tightened from the front of the outdoor side X1, making it easy to install the mullion structure 30 from the front of the outdoor side X1.

[0083] In this embodiment, the mullion 3 comprises a mullion body 31 having an indoor portion 32 that extends vertically and is positioned on the indoor side X2 of the glass panel 4, and an extension portion 33 that extends vertically and protrudes from the indoor portion 32 through the side of the glass panel 4 to the outdoor side X1 in the depth direction, and the vertical ends of the extension portion 33 in the depth direction are formed by cutting out portions to avoid fastening with screws 611a, 621a.

[0084] This ensures that when fastening the upper and lower ends of the mullion 3 to the mullion-side fixing parts 611 and 621 of the connecting members (upper connecting member 61 and lower connecting member 62) with screws 611a and 621a, space is available for tools such as screwdrivers, and fastening can be easily performed with screws 611a and 621a by utilizing the cut-out space at the vertical ends of the extension portion 33 of the mullion body 31 in the depth direction. Furthermore, because the vertical ends of the extension portion 33 of the mullion body 31 in the depth direction are cut out, the material cost of the cut-out portion can be reduced.

[0085] In this embodiment, reinforcing members (upper reinforcing member 71, lower reinforcing member 72) are provided to connect the upper and lower ends of the extension portion 33 of the mullion body 31 in the depth direction to the connecting members (upper connecting member 61, lower connecting member 62). As a result, at the upper and lower ends of the mullion 3, the reinforcing members (upper reinforcing member 71, lower reinforcing member 72) connect the upper and lower ends of the extension portion 33 of the mullion body 31 in the depth direction to the connecting members (upper connecting member 61, lower connecting member 62), thereby reinforcing the mounting strength of the mullion 3 and improving the mounting strength.

[0086] Furthermore, the construction method of the mullion structure 30 in this embodiment includes a mullion connection step of fastening the upper and lower ends of the mullion 3 to the mullion-side fixing parts 611 and 621 of the connecting members (upper connecting member 61 and lower connecting member 62) connected to the frame 2 (upper frame 21 and lower frame 22) with screws 611a and 621a; a fastening member loosening step of loosening the screws 611a and 621a that fastened the upper and lower ends of the mullion 3 to the mullion-side fixing parts 611 and 621 from the front of the outdoor side X1; a mullion tilting step of tilting the mullion 3 to one side in the visible direction; and arranging the glass panel 4 on the other side of the mullion 3 in the visible direction within the frame 2. The process includes a glass panel placement step, a mullion tilt return step, returning the mullion 3 from a tilted state to its state before tilting, and a fastening member tightening step, in which, with the frame-side fixing parts 612, 622 of the connecting members (upper connecting member 61, lower connecting member 62) connected to the frame 2 (upper frame 21, lower frame 22) and the glass panel 4 positioned within the frame 2 (upper frame 21, lower frame 22), screws 611a, 621a that were fastened to the upper and lower ends of the mullion 3 and the connecting members (upper connecting member 61, lower connecting member 62) and the mullion-side fixing parts 611, 621 are tightened from the front of the outdoor side X1.

[0087] As a result, by loosening the screws 611a and 621a from the front of the outdoor side X1 and tilting the connecting members (upper connecting member 61, lower connecting member 62) and the upper and lower ends of the mullion 3 to one side in the left-right direction, the glass panel 4 can be easily positioned on the other side in the left-right direction of the mullion 3, and then the screws 611a and 621a can be tightened and fixed from the front of the outdoor side X1. Therefore, since the gap between the mullion 3 and the glass panel 4 can be reduced, the screws 611a and 621a can be loosened and tightened from the front of the outdoor side X1, making it easy to install the mullion structure 30 from the front of the outdoor side X1.

[0088] While preferred embodiments of this disclosure have been described above, this disclosure is not limited to the embodiments described above and can be modified as appropriate.

[0089] In the above embodiment, a configuration was described in which a mullion 3 is placed between two glass panels 4, and the glass panels 4 are placed on both sides of the mullion 3 in the left-right direction. However, the embodiment is not limited to this, and a configuration in which a glass panel 4 is placed only on one side of the mullion 3 in the left-right direction is also possible. [Explanation of Symbols]

[0090] 2 Frame, 3 Mullion, 4 Glass Panel, 6a Shaft (First Shaft, Second Shaft), 6b Head (First Head, Second Head), 21 Upper Frame (Frame), 22 Lower Frame (Frame), 31 Mullion Body, 32 Indoor Side Part, 33 Depth-Extending Part, 61 Upper Connecting Member (First Connecting Member), 62 Lower Connecting Member (Second Connecting Member), 71 Upper Reinforcement Member (First Reinforcement Member), 72 Lower Reinforcement Member (Second Reinforcement Member), 611 Mullion Side Fixing Part (First Mullion Side Fixing Part), 621 Mullion Side Fixing Part (Second Mullion Side Fixing Part), 611a Screw (First Fastening Member), 621a Screw (Second Fastening Member), 612 Frame Side Fixing Part (First Frame Side Fixing Part), 622 Frame Side Fixing Part (Second Frame Side Fixing Part)

Claims

1. Frame and, A glass panel placed inside the aforementioned frame, A mullion that extends in the vertical direction and is positioned to the side of the glass panel, and is formed to protrude outward from the glass panel in the depth direction, A first connecting member that connects the frame and the upper end of the mullion, A mullion structure comprising a second connecting member that connects the frame and the lower end of the mullion, The first connecting member has a first frame-side fixing portion connected to the frame and a first mullion-side fixing portion fastened to the upper end of the mullion by a first fastening member. With the first frame-side fixing portion connected to the frame and the glass panel positioned within the frame, the first fastening member, which is loosely fastened to the upper end of the mullion and the first mullion-side fixing portion, is configured to be tightened from the front on the exterior side. The second connecting member has a second frame-side fixing portion connected to the frame and a second mullion-side fixing portion fastened to the lower end of the mullion by a second fastening member. A mullion structure configured such that, when the second frame-side fixing portion and the frame are connected and the glass panel is positioned inside the frame, the second fastening member, which is fastened to the lower end of the mullion and the second mullion-side fixing portion in a loosened state, can be tightened from the front on the outdoor side.

2. The glass panel comprises two of the aforementioned glass panels, The two glass panels are arranged side by side within the frame at a predetermined distance in the visible direction. The mullion structure according to claim 1, wherein the mullion is positioned to the side of the two glass panels and between the two glass panels.

3. The first vertical fixing portion and the second vertical fixing portion are each formed in a plate shape extending in the visible direction, The first fastening member is configured to have a first shaft portion extending in the depth direction and a first head portion positioned at the outdoor end of the first shaft portion, the first shaft portion passing through the visible surface of the upper end of the mullion and the first mullion-side fixing portion, and the first head portion positioned on the outdoor side of the first mullion-side fixing portion, and can be tightened by rotating the first head portion from the outdoor front. The mullion structure according to claim 1 or 2, wherein the second fastening member comprises a second shaft portion extending in the depth direction and a second head portion positioned at the outdoor end of the second shaft portion, the second shaft portion passing through the visible surface of the lower end of the mullion and the second mullion-side fixing portion, the second head portion positioned on the outdoor side of the second mullion-side fixing portion, and the mullion structure according to claim 1 or 2, which can be fastened by rotating the second head portion from the outdoor front.

4. The mullion comprises a mullion body having an indoor portion that extends vertically and is positioned on the indoor side of the glass panel, and a portion that extends vertically and extends from the indoor portion through the side of the glass panel to the outdoor side in the depth direction. The upper end of the portion extending in the depth direction is formed by cutting out a section to avoid the portion fastened by the first fastening member. The mullion structure according to claim 1 or 2, wherein the lower end in the vertical direction of the portion extending in the projection direction is formed by cutting out a notch to avoid the portion fastened by the second fastening member.

5. A first reinforcing member connects the upper end of the portion extending in the projection direction and the first connecting member, The mullion structure according to claim 4, further comprising a second reinforcing member connecting the lower end of the portion extending in the projection direction and the second connecting member.

6. Frame and, A glass panel placed inside the aforementioned frame, A mullion that extends in the vertical direction and is positioned to the side of the glass panel, and is formed to protrude outward from the glass panel in the depth direction, A first connecting member that connects the frame and the upper end of the mullion, A method for constructing a mullion structure comprising a second connecting member that connects the frame and the lower end of the mullion, The first connecting member has a first frame-side fixing portion connected to the frame and a first mullion-side fixing portion fastened to the upper end of the mullion by a first fastening member. The second connecting member has a second frame-side fixing portion connected to the frame and a second mullion-side fixing portion fastened to the lower end of the mullion by a second fastening member. A mullion connection step is to fasten the upper end of the mullion to the first mullion-side fixing portion of the first connecting member connected to the frame by a first fastening member, and to fasten the lower end of the mullion to the second mullion-side fixing portion of the second connecting member connected to the frame by a second fastening member, A fastening member loosening step is performed, in which the first fastening member that fastens the upper end of the mullion and the first mullion-side fixing portion is loosened from the outdoor front, and the second fastening member that fastens the lower end of the mullion and the second mullion-side fixing portion is loosened from the outdoor front, A mullion tilting step in which the mullion is tilted to one side in the visible direction, A glass panel placement step involves arranging the glass panel on the other side of the mullion in the visible direction within the frame, A process of returning the mullion from the tilted state to the state before tilting, A method for constructing a mullion structure, comprising: a fastening member tightening step, in a state in which the first frame-side fixing portion is connected to the frame and the second frame-side fixing portion is connected to the frame and the glass panel is arranged inside the frame, the first fastening member, which is loosely fastened to the upper end of the mullion and the first mullion-side fixing portion, is tightened from the front on the outdoor side, and the second fastening member, which is loosely fastened to the lower end of the mullion and the second mullion-side fixing portion, is tightened from the front on the outdoor side.

Images