Glass shoji screen

Abstract

To prevent or delay the collapse of glass by relaxing the deformation of a bottom rail even when the bottom rail receives high heat at the time of fire occurrence or the like.SOLUTION: A bottom rail 1d is provided with a hollow section upper plate 1d13 for supporting an outdoor side glass 1a and an indoor side glass 1b via a setting block 1k, and a hollow section lower plate 1d21 provided at a specified interval in the vertical direction with respect to the hollow section upper plate 1d13, in which the hollow section upper plate 1d13 is provided with a female screw hole 1d13a at a position that does not interfere with the setting block 1k, and a bottom rail reinforcing screw 1n is provided such that a shaft section 1n1 provided with a male screw section 1n11 is so screwed through the female screw hole 1d13a as to cause a lower end of the shaft section 1n1 to reach the hollow section lower plate 1d21.SELECTED DRAWING: Figure 3

Description

Technical Field

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[0001] The present invention relates to the structure of a glass partition in which the periphery of the glass is supported by an upper frame, a lower frame, and left and right vertical frames. In particular, the present invention relates to a glass partition that can prevent or delay the collapse of the glass due to the melting of the lower frame during a fire or the like.

Background Art

[0002] A glass partition is configured by supporting the periphery of the glass with an upper frame, a lower frame, and left and right vertical frames. Usually, these frames are formed of a light metal such as aluminum alone or a composite material of these and a synthetic resin (see, for example, Patent Documents 1 and 2). The lower frame usually forms a so-called hollow portion by an upper plate (hereinafter referred to as a hollow portion upper plate), a lower plate (hereinafter referred to as a hollow portion lower plate) provided at a predetermined interval in the vertical direction with respect to the hollow portion upper plate, and side plates provided between them. A setting block is usually provided on the hollow portion upper plate, and the glass is supported via the setting block.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the glass partitions disclosed in Patent Documents 1 and 2 described above, when a fire or the like occurs and the lower frame that supports the glass from below receives high heat, the melting of the lower frame is promoted by the weight of the glass, and there is a risk of leading to the collapse of the glass.

[0005] Therefore, as shown in Figure 7, a conventional method has been proposed in which a bent steel or stainless steel reinforcing material 1d4' is inserted into the hollow portion 1d3' of the outer glass sash 1' and fixed with screws 1d5' to prevent the glass 1a' and 1b' of the outer glass sash 1' from collapsing. However, in this conventional method, as shown in the enlarged cross-sectional view of the main part in Figure 8(a), a clearance is required between the lower part 1d41' of the bent reinforcing material 1d4' and the lower hollow plate 1d21' in order to insert the bent reinforcing material 1d4' into the hollow portion 1d3'. Therefore, if the part of the lower frame 1d' of the outer glass sash 1' that faces the outdoors deforms due to heat from an outdoor fire, etc., as shown in Figure 8(b), the weight of the glass 1a' and 1b' accelerates the deformation of the lower frame 1d' until the clearance between the lower part of the bent reinforcing material 1d4' and the lower hollow plate 1d21' disappears, making it difficult to effectively prevent the glass 1a' and 1b' from collapsing.

[0006] Therefore, the present invention has been made in view of these problems, and aims to provide a glass shoji screen that can prevent or delay the collapse of the glass by mitigating the deformation of the lower frame even when the lower frame is subjected to high heat during a fire or the like. [Means for solving the problem]

[0007] To solve the aforementioned problems, the glass shoji screen according to the present invention is a glass shoji screen in which the glass is supported around the perimeter by an upper frame, a lower frame, and left and right vertical frames, wherein the lower frame has a hollow portion, and the hollow portion has a hollow portion upper plate that supports the glass via a setting block, and a hollow portion lower plate that is provided at a predetermined vertical distance from the hollow portion upper plate, and the male screw portion on the outer circumference of the shaft portion screws through the hollow portion upper plate. do Reinforcement screws are provided for the lower frame. The lower end of the shaft of the lower frame reinforcing screw is in contact with the upper surface of the hollow lower plate. It is characterized by the following: Furthermore, the glass shoji screen according to the present invention is A glass shoji screen in which the glass is supported by an upper frame, a lower frame, and vertical frames on the left and right sides. , The lower frame is provided with a hollow section, the hollow section having a hollow section upper plate that supports the glass via a setting block, and a hollow section lower plate provided at a predetermined vertical distance from the hollow section upper plate, and a lower frame reinforcing screw is provided whose male threaded portion on the outer circumference of the shaft is screwed into and penetrates the hollow section upper plate. Another feature is that the aforementioned lower frame reinforcing screws are located on the outdoor side of the center of the glass in the depth direction. Furthermore, in the glass shoji screen according to the present invention, The aforementionedAnother characteristic is that there is a gap between the underside of the head of the lower frame reinforcing screw and the upper surface of the hollow upper plate. Furthermore, the glass shoji screen according to the present invention is also characterized in that the lower frame reinforcing screws are provided in the vicinity of the setting block. [Effects of the Invention]

[0008] In the glass sliding door according to the present invention, a reinforcing screw for the lower frame is provided between the upper hollow plate and the lower hollow plate of the lower frame, such that the male threaded portion on the outer circumference of the shaft is screwed through the upper hollow plate and the lower end of the shaft reaches the upper surface of the lower hollow plate. Therefore, even if the bottom frame is subjected to high temperatures during a fire or other incident, the shape of the hollow section is maintained by the gap between the upper and lower plates of the hollow section, which is maintained by the bottom frame reinforcing screws. This mitigates or suppresses deformation of the bottom frame, thus preventing or delaying the collapse of the glass. [Brief explanation of the drawing]

[0009] [Figure 1] This is a front view (external view) showing an example of the configuration of the entire window, including the outer glass sash, which is an embodiment of the glass sash according to the present invention, as viewed from the outside. [Figure 2] This is a vertical cross-sectional view of the entire window, including the outer glass sash, which is an embodiment of the glass sash according to the present invention. [Figure 3] This is an enlarged longitudinal cross-sectional view of the vicinity of the hollow portion of the lower frame in Figure 2. [Figure 4] This is a cross-sectional view of a glass outer sash, which is an embodiment of the glass sash according to the present invention. [Figure 5] This is a front view (external view) of a partially cut-out lower part of the outer glass sash, which is an embodiment of the glass sash according to the present invention. [Figure 6] This is an enlarged longitudinal cross-sectional view showing another example of the configuration near the hollow portion of the lower frame in Figure 2. [Figure 7] This is a vertical cross-sectional view showing an example of a conventional method for preventing glass collapse in glass-covered sliding doors during a fire. [Figure 8](a) and (b) are enlarged cross-sectional views of key parts, respectively, showing the area around the hollow portion of the lower frame of the glass outer sash in the conventional method shown in Figure 7, and enlarged cross-sectional views of key parts, showing the reasons why the glass collapse can occur even with the conventional method shown in Figure 7 when a fire occurs on the outdoor side. [Modes for carrying out the invention]

[0010] Hereinafter, a glass shoji screen 1 according to an embodiment of the present invention will be described with reference to the drawings. It should be noted that the glass shoji screen 1 according to the embodiment described below is merely one example of the present invention, and the present invention is not limited to the glass shoji screen 1 according to the embodiment described below. It can be modified as appropriate within the scope of the technical idea of ​​the present invention.

[0011] As shown in Figures 1 to 4, the glass sash of the embodiment according to the present invention is a glass outer sash 1 that runs along an upper outer rail 2a1 provided on an upper frame 2a and a lower outer rail 2b1 provided on a lower frame 2b, which constitute a window frame 2 provided in an opening in a building, and a glass inner sash 1' that runs along an upper inner rail 2a2 provided on an upper frame 2a and a lower inner rail 2b2 provided on a lower frame 2b, forming a so-called sliding sash. A pair of vertical frames 2c and 2d are provided on both sides of the upper frame 2a and the lower frame 2b, respectively, as shown in Figures 1 and 4.

[0012] <Configuration of the glass outer sash 1 in the embodiment> As shown in Figures 1 to 5, the glass outer sash 1 of the embodiment is configured with an upper frame 1c and a lower frame 1d at the upper and lower ends of multiple panes of glass 1a, 1b (double-glazed glass) spaced at predetermined intervals (here, for example, two panes, but in the present invention, it is not limited to two panes, and may be one pane or three or more panes), and vertical frames, namely door frame 1e and meeting frame 1f, at the left and right ends.

[0013] The plurality of glasses 1a, 1b are respectively an outdoor glass 1a with wire mesh and an indoor glass 1b without wire mesh. Between the outdoor glass 1a and the indoor glass 1b, a spacer 1g and a sealing material 1h are provided respectively, maintaining a predetermined interval and a sealed state between the plurality of glasses 1a, 1b.

[0014] Also, a sealing material 1i and a backup material 1j which is a non-combustible backing are provided on the outside of the end of the outdoor glass 1a and the inside of the end of the indoor glass 1b. The upper frame 1c supports the upper ends of the outdoor glass 1a and the indoor glass 1b provided with the spacer 1g, the sealing material 1h, the sealing material 1i, the backup material 1j, etc. On the other hand, the lower ends of the outdoor glass 1a and the indoor glass 1b provided with them are supported by the lower frame 1d via a setting block 1k to form the glass outer shutter 1.

[0015] (Lower frame 1d) The lower frame 1d is mainly composed of a light metal profile such as aluminum. As shown in FIGS. 2 and 3, it includes a glass lower end support portion 1d1 where the lower ends of the outdoor glass 1a and the indoor glass 1b are housed, a door wheel housing portion 1d2 for housing the door wheel 1m, and a hollow portion 1d3 provided between the glass lower end support portion 1d1 and the door wheel housing portion 1d2, etc.

[0016] (Glass lower end support portion 1d1) The glass lower end support portion 1d1 includes an outdoor upright wall plate 1d11 that stands up at the lower end of the outdoor glass 1a and supports the sealing material 1i and the backup material 1j on the outdoor glass 1a side from the outdoor side (outdoor side), a water reservoir plate 1d12 that extends in the indoor direction from the lower end of the outdoor upright wall plate 1d11, and after rising several millimeters with the water reservoir plate 1d12 as the bottom of the water reservoir concave groove, it extends in the indoor direction and supports the outdoor glass 1a and the indoor glass 1b from below via the setting block 1k, and an indoor upright wall plate 1d14 that stands up from the indoor side end of the hollow portion upper plate 1d13 and supports the sealing material 1i and the backup material 1j on the indoor glass 1b side from the indoor side (indoor side), etc.

[0017] The water-retaining plate 1d12 is provided with drainage holes (not shown) for draining rainwater accumulated in the water-retaining groove surrounded by the outdoor upright wall plate 1d11, the water-retaining plate 1d12, and the rising portion of the hollow upper plate 1d13, as well as water accumulated from condensation on the outdoor glass 1a and indoor glass 1b, to the outside. In this embodiment, a water-retaining plate 1d12 is provided, but the hollow upper plate 1d13 may be extended to the outdoor upright wall plate 1d11, and drainage holes may be provided in the hollow upper plate 1d13.

[0018] Furthermore, projections are provided on the indoor end of the water reservoir plate 1d12 and the outdoor end of the hollow upper plate 1d13 to provide screw receiving parts for receiving frame fixing screws (not shown), such as tapping screws, that fix the lower frame 1d to the door frame 1e and meeting frame 1f. These screw receiving parts are provided with female screw holes 1d13a at predetermined intervals along their longitudinal direction, into which the male screw portion 1n11 of the shaft portion 1n1 of the lower frame reinforcing screw 1n is screwed.

[0019] The female screw hole 1d13a is provided in a location where no setting block 1k is provided, for example, about 10 mm away from the setting block 1k, so as not to interfere with the setting block 1k which is provided at predetermined intervals as shown in Figure 5. In this embodiment, it is provided between the setting block 1k (on one side of the setting block 1k), but it may also be provided between the setting block 1k and the vertical frame (door edge frame 1e, meeting frame 1f) (on the other side of the setting block 1k), or both (on both sides of the setting block 1k).

[0020] Furthermore, the female screw hole 1d13a may be pre-made in the hollow upper plate 1d13, or it may be a female screw hole opened by the lower frame reinforcing screw 1n using a tapping screw (self-tapping screw) as the lower frame reinforcing screw 1n, as long as it is a female screw hole into which the lower frame reinforcing screw 1n is screwed. Also, the female screw hole 1d13a may be provided not only between setting blocks 1k, 1k, but also by cutting out a part of the setting block 1k or by drilling a hole in the setting block 1k so as not to interfere with the setting block 1k.

[0021] Furthermore, as shown in Figures 2 and 3, the female screw hole 1d13a is located on the outdoor side of the center of the hollow upper plate 1d13 in the depth direction, and the lower frame reinforcing screw 1n is located at a point offset to the outdoor side from the center of the setting block 1k in the depth direction and the center of the outdoor glass 1a in the depth direction.

[0022] (Roller storage section 1d2) The door roller storage section 1d2 is a part that houses and supports the door roller 1m so that it can rotate, and includes a hollow lower plate 1d21 provided at a predetermined distance from the water reservoir plate 1d12 and the hollow upper plate 1d13 that constitute the glass lower end support section 1d1, and a screw receiving plate 1d22 provided a few mm above the indoor end of the hollow lower plate 1d21 that receives frame fixing screws (not shown), such as tapping screws, that fix the frame 1d to the door edge frame 1e and meeting frame 1f, and the hollow lower The structure consists of a front roller cover plate 1d23 that descends vertically from the outdoor end of the board 1d21, then extends diagonally inward, and then downward to cover the outdoor side of the roller 1m; a rear roller cover plate 1d24 that descends from the indoor end of the screw receiving plate 1d22 to cover the indoor side of the roller 1m; and a roller support plate 1d25 provided between the front roller cover plate 1d23 and the rear roller cover plate 1d24, which supports a portion of the roller 1m by allowing it to protrude downward from an opening (not shown).

[0023] (Hollow part 1d3) The hollow section 1d3 is a hollow space formed between the glass lower end support section 1d1 and the roller storage section 1d2, and is surrounded by a hollow section front plate 1d31 provided flush with the outdoor upright wall plate 1d11 that constitutes the glass lower end support section 1d1, a hollow section rear plate 1d32 provided flush with the indoor upright wall plate 1d14 that constitutes the glass lower end support section 1d1, a water reservoir plate 1d12 and a hollow section upper plate 1d13 that constitute the glass lower end support section 1d1, and a hollow section lower plate 1d21 and a screw receiving plate 1d22 that constitute the roller storage section 1d2. In this embodiment, a screw receiving plate 1d22 is provided, but the hollow section lower plate 1d21 may be extended to the hollow section rear plate 1d32 and a screw receiving section may be provided on the hollow section lower plate 1d21.

[0024] Here, the height H of the hollow section 1d3 is the vertical distance between the upper hollow section plate 1d13 and the lower hollow section plate 1d21.

[0025] (Bottom frame reinforcement screw 1n) As shown in Figure 3, the lower frame reinforcing screw 1n has a shaft portion 1n1 with a male threaded portion 1n11 and a head portion 1n2 provided at the upper end of the shaft portion 1n1. The male threaded portion 1n11 of the shaft portion 1n1 is screwed into the female threaded hole 1d13a of the hollow upper plate 1d13, and the lower end of the shaft portion 1n1 is positioned to abut against the upper surface of the hollow lower plate 1d21.

[0026] Here, even when the lower end of the shaft portion 1n1 of the lower frame reinforcing screw 1n abuts against the upper surface of the hollow lower plate 1d21, a predetermined gap is maintained between the lower surface of its head 1n2 and the upper surface of the hollow upper plate 1d13. This is because the length L of the shaft portion 1n1 of the lower frame reinforcing screw 1n is greater than the vertical spacing H of the hollow portion 1d3, and the relationship L > H holds true.

[0027] (Glass-covered shoji screen 1') Furthermore, the inner glass sash 1', like the outer glass sash 1, is composed of an outer glass 1a', an inner glass 1b', an upper frame 1c', a lower frame 1d', a door edge frame 1e', a meeting frame 1f', a spacer 1g', sealing material 1h', sealing material 1i', a backup material 1j', a door roller 1m', etc., as shown in Figure 2, etc. The lower frame 1d' has a glass lower end support part 1d1' and a door roller storage part 1d2', but does not have a hollow part 1d3. Therefore, unlike the outer glass sash 1, the inner glass sash 1' does not have a lower frame reinforcing screw 1n, etc.

[0028] <When the lower frame 1d of the glass outer sash 1 of the embodiment is subjected to high heat due to fire, etc.> Next, we will explain what happens when the lower frame 1d of the glass outer sash 1, which is made of a single light metal such as aluminum or a composite material of such metals and synthetic resin, is subjected to high heat due to a fire or the like.

[0029] If a fire or other incident occurs and the glass lower end support part 1d1, the roller storage part 1d2, and the hollow part 1d3 that make up the lower frame 1d begin to be subjected to high heat, the upper plate 1d13 of the hollow part, which supports the outer glass 1a and the inner glass 1b via the setting block 1k, will attempt to sink due to the weight of the outer glass 1a and the inner glass 1b.

[0030] However, in the glass outer sash 1 of the embodiment, the male threaded portion 1n11 of the shaft portion 1n1 of the lower frame reinforcing screw 1n is screwed into the female threaded hole 1d13a of the hollow upper plate 1d13, and the lower end of the shaft portion 1n1 abuts against the upper surface of the hollow lower plate 1d21, so that the load of the outdoor glass 1a and indoor glass 1b is received not only by the hollow portion 1d3 but also by the lower frame reinforcing screw 1n, and the shape of the hollow portion 1d3 is maintained by the lower frame reinforcing screw 1n functioning as a support that maintains the gap between the hollow upper plate 1d13 and the hollow lower plate 1d21, so that the collapse of the outdoor glass 1a and indoor glass 1b can be prevented or delayed.

[0031] In particular, in the glass outer sash 1 of the embodiment, as shown in Figure 3, the length L of the shaft portion 1n1 of the lower frame reinforcing screw 1n is made larger than the vertical spacing H of the hollow portion 1d3, so that a predetermined gap is left between the lower surface of the head 1n2 of the lower frame reinforcing screw 1n and the upper surface of the hollow portion upper plate 1d13.

[0032] Therefore, the lower end of the shaft portion 1n1 of the lower frame reinforcing screw 1n reliably contacts the upper surface of the hollow section lower plate 1d21, so that the lower frame reinforcing screw 1n functions as a column supporting the hollow section upper plate 1d13 and the hollow section lower plate 1d21. As a result, the vertical distance H of the hollow section 1d3 is maintained by the lower frame reinforcing screw 1n. Thus, even if the hollow section upper plate 1d13 and the hollow section lower plate 1d21 are subjected to high heat due to fire or the like, the shape of the hollow section 1d3 is maintained by maintaining the distance between the hollow section upper plate 1d13 and the hollow section lower plate 1d21, making it possible to prevent or delay the collapse of the exterior glass 1a and the interior glass 1b.

[0033] Furthermore, in the glass outer sash 1 of the embodiment, the female screw hole 1d13a of the hollow upper plate 1d13 is offset to the outside from the center of the hollow upper plate 1d13 in the depth direction, and also offset to the outside from the center of the outer glass 1a in the depth direction.

[0034] Therefore, in the event of a fire or the like, if the exterior side of the outer glass sash 1 is subjected to high heat before the interior side, the closer it is to the bottom frame reinforcing screw 1n, the better its original shape will be maintained, thus preventing the exterior glass 1a and interior glass 1b from collapsing or falling out to the exterior (outdoor) side.

[0035] Furthermore, the bottom frame 1d constituting the outer glass sash 1 of the embodiment of the present invention supports the outer glass 1a and the inner glass 1b via a setting block 1k. In other words, a bottom frame reinforcing screw 1n is provided near the setting block 1k (on one side, approximately 10 mm away in the longitudinal direction in the embodiment) that transmits the weight of the outer glass 1a and the inner glass 1b to the outer glass sash 1.

[0036] Therefore, since the bottom frame 1d is provided with bottom frame reinforcing screws 1n near the point where it bears the greatest weight of the exterior glass 1a and interior glass 1b, the shape of the hollow portion is maintained not only in the depth direction but also in the longitudinal direction. In this respect as well, in the event of a fire, the deformation of the hollow portion 1d of the bottom frame 1d can be delayed, preventing or delaying the collapse of the exterior glass 1a and interior glass 1b.

[0037] In the above embodiments, as shown in Figures 2 and 3, the lower end of the shaft portion 1n1 of the lower frame reinforcing screw 1n was described as being in contact with the upper surface of the hollow lower plate 1d21. However, the present invention is not limited to this, and of course, as shown in Figure 6, a female screw hole 1d21a is provided in the hollow lower plate 1d21 below the female screw hole 1d13a of the hollow upper plate 1d13 into which the male screw portion 1n11 of the shaft portion 1n1 of the lower frame reinforcing screw 1n is screwed, and the screw portion 1n11' of the shaft portion 1n1' of the lower frame reinforcing screw 1n' is screwed into the female screw hole 1d13a of the hollow upper plate 1d13 and the female screw hole 1d21a of the hollow lower plate 1d21. In the example shown in Figure 6, the lower frame reinforcing screw 1n' penetrates the hollow lower plate 1d21, but it may also be screwed into the female screw hole 1d21a without penetrating. In this case, the length L' of the shaft portion 1n1' of the lower frame reinforcing screw 1n' should be greater than the height H of the hollow portion 1d3, which is the vertical distance between the upper hollow portion plate 1d13 and the lower hollow portion plate 1d21. This is done so that even when the threaded portion 1n11' of the shaft portion 1n1' of the lower frame reinforcing screw 1n' is screwed into the female threaded hole 1d13a of the upper hollow portion plate 1d13 and the female threaded hole 1d21a of the lower hollow portion plate 1d21, there is a gap between the lower surface of the head 1n2' and the upper surface of the upper hollow portion plate 1d13.

[0038] Furthermore, in the above embodiment, the female screw hole 1d13a into which the male screw portion 1n11 of the shaft portion 1n1 of the lower frame reinforcing screw 1n is screwed was described as being provided in the hollow upper plate 1d13 at a location that does not interfere with the setting block 1k. However, since the purpose of the lower frame reinforcing screw 1n is to prevent or delay the collapse of the outdoor glass 1a and the indoor glass 1b, the present invention is not limited to this, and for example, a recess or through hole may be formed in the setting block 1k and the screw 1n may be provided at a position that overlaps with the setting block 1k.

[0039] Furthermore, although the glass sash of the embodiment of the present invention has been described using the outer glass sash 1 that constitutes a sliding sash as shown in Figures 1 to 4 as an example, the present invention is not limited to this, and the present invention may also be applied to the inner glass sash 1' side to provide the bottom frame reinforcing screws 1n, etc. Moreover, it may of course be applied not only to the glass sash of sliding windows, but also to the glass sash of casement windows, sliding windows, double-hung windows, fixed windows, and other glass sashes other than sliding windows. [Explanation of Symbols]

[0040] 1. Glass outer shoji screen (glass shoji screen) 1a Exterior glass 1b Interior glass 1c upper stile 1d Lower stile 1d1 Lower end support of glass 1d11 Outdoor standing wall board 1d12 Water reservoir board 1d13 Hollow upper plate 1d13a Female screw hole 1d14 Indoor standing wall board 1d2 Door roller storage section 1d21 Hollow lower plate 1d21a Female screw hole 1d22 Screw receiving plate 1d23 Front cover plate for door roller 1d24 Rear cover plate for door rollers 1d25 Door roller support plate 1d3 Hollow 1d31 Hollow front panel 1d32 Hollow rear plate 1e Door frame (vertical frame) 1f Combined stile (vertical stile) 1g spacer 1h sealing material 1i Sealing material 1j backup material 1k Setting Block 1m Door roller 1n bottom frame reinforcement screw 1n1 shaft part 1n11 male thread part 1n2 head 2 Window frame 2a Upper frame 2b Bottom frame 2c,2d vertical frame

Claims

1. A glass shoji screen in which the glass is supported by an upper frame, a lower frame, and vertical frames on the left and right, The aforementioned lower frame is provided with a hollow section. The hollow portion is, A hollow upper plate that supports the glass via a setting block, It has a hollow lower plate provided at a predetermined vertical distance from the hollow upper plate, A lower frame reinforcing screw is provided, in which the male threaded portion on the outer circumference of the shaft portion screws into and penetrates the upper plate of the hollow portion. A glass sliding door characterized in that the lower end of the shaft portion of the lower frame reinforcing screw abuts against the upper surface of the hollow lower plate.

2. A glass shoji screen in which the glass is supported around the perimeter by an upper frame, a lower frame, and left and right vertical frames, The aforementioned lower frame is provided with a hollow section. The hollow portion is, A hollow upper plate that supports the glass via a setting block, It has a hollow lower plate provided at a predetermined vertical distance from the hollow upper plate, A lower frame reinforcing screw is provided, in which the male threaded portion on the outer circumference of the shaft portion screws into and penetrates the upper plate of the hollow portion. The glass shoji screen is characterized in that the lower frame reinforcing screw is provided on the outdoor side of the center in the depth direction of the glass.

3. In the glass shoji screen according to claim 1 or claim 2, A glass shoji screen characterized by having a gap between the underside of the head of the lower frame reinforcing screw and the upper surface of the hollow upper plate.

4. In a glass shoji screen according to any one of claims 1 to 3, The glass shoji screen is characterized in that the lower frame reinforcing screws are provided near the setting block.

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