Curtain wall

Abstract

To provide a curtain wall capable of preventing water from entering indoors through a gap between an attachment and a frame.SOLUTION: A curtain wall comprises a frame 3 supporting a panel 4B, an attachment 5 attached to the panel 4B and locked to the frame 3, a first communication hole 321 formed in the frame 3 and communicating a space S11 inside the attachment 5 with a space S32 inside the frame 3, and a second communication hole 311 formed in the frame 3 and communicating the space S32 inside the frame 3 with outside air.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to curtain walls. [Background technology]

[0002] Conventionally, as a construction method for supporting panels such as glass that constitute the wall surface of a building, the SSG construction method has been known, for example, as shown in Patent Document 1. The SSG construction method (System of Soil Grout method) is a construction method that supports panels by bonding the panels to frames such as mullions and columns made of aluminum frames or the like with a structural sealant. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-178578 A Summary of the Invention [Problem to be solved by the invention]

[0004] When an attachment attached to a panel is engaged with a frame and the panel is supported by the frame, there is a problem in that water such as rainwater and condensation water can be drawn into the room through the gap between the attachment and the frame.

[0005] The present disclosure has been made in consideration of the above circumstances, and provides a curtain wall that can prevent water from entering the interior of a building through the gap between the attachment and the frame. [Means for solving the problem]

[0006] A curtain wall according to one embodiment of the present disclosure comprises a frame supporting a panel, an attachment attached to the panel and engaged with the frame, and a first communication hole formed in the frame that connects a space inside the attachment with a space inside the frame. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a front view of the curtain wall according to the present embodiment. [Diagram 2] FIG. 2 is a vertical cross-sectional view of the curtain wall according to the present embodiment. [Diagram 3] FIG. 3 is an enlarged view of part III in FIG. 2. [Figure 4] FIG. 11 is a horizontal cross-sectional view of a curtain wall according to a modified example. [Diagram 5] FIG. 11 is a vertical cross-sectional view of a curtain wall according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The curtain wall according to the present embodiment will be described below with reference to the drawings. The following embodiment shows one aspect of the present disclosure, does not limit the present disclosure, and can be modified as desired within the scope of the technical idea of ​​the present disclosure. In the following drawings, the scale of each structure is different from the actual structure in order to make each structure easier to understand.

[0009] In the following explanation, the direction connecting the outdoor side and the indoor side and running horizontally is referred to as the indoor-outdoor direction. The direction perpendicular to the indoor-outdoor direction and running horizontally is referred to as the left-right direction. The direction perpendicular to the indoor-outdoor direction and the left-right direction is referred to as the up-down direction. The indoor-outdoor direction is indicated by arrow Y, with the outdoor side indicated as the +Y side in Figure 2 etc. and the indoor side indicated as the -Y side in Figure 2 etc. The left-right direction is indicated by arrow X. The up-down direction is indicated by arrow Z.

[0010] As shown in Fig. 1, the curtain wall 100 is composed of a plurality of curtain wall units 101 arranged adjacent to each other in the left-right and up-down directions and connected to each other. The curtain wall unit 101 includes a frame 1, two glass panels 4A, 4B, and an attachment 5 shown in Fig. 3. The curtain wall 100 is made by applying the SSG construction method.

[0011] The frame body 1 comprises a pair of vertical frames 21, 21, an upper transom 22 which serves as the upper frame, a middle transom 24 located in the middle in the vertical direction, and a lower transom 3 which serves as the lower frame. The frame body 1 supports the glass panels 4A, 4B. The vertical frame 21 extends in the vertical direction. The pair of vertical frames 21, 21 are spaced apart in the left-right direction. The upper transom 22, the middle transom 24, and the lower transom 3 extend in the left-right direction. The upper transom 22 connects the upper ends of the pair of vertical frames 21, 21 to each other. The middle transom 24 connects the middle parts of the pair of vertical frames 21, 21 to each other in the vertical direction. The lower transom 3 connects the lower ends of the pair of vertical frames 21, 21 to each other. The lower transom 3 corresponds to the frame in the claims.

[0012] The glass panel 4A is disposed inside a frame body formed into a four-sided frame shape by a pair of vertical frames 21, 21, an upper transom 22, and an intermediate transom 24. The glass panel 4B is disposed inside a frame body formed into a four-sided frame shape by a pair of vertical frames 21, 21, an intermediate transom 24, and a lower transom 3. As an example, a curtain wall unit 101 having two glass panels 4A, 4B on the inside of a frame body 1 is shown, but the number of glass panels of the curtain wall unit 101 is not limited to the illustrated example. As shown in FIG. 2, the glass panel 4A is a single-layer glass, and the glass panel 4B is a double-layer glass. Each glass panel may be a single-layer glass or a double-layer glass. Instead of a glass panel, a panel formed of a material other than glass may be used. The glass panel 4B corresponds to a panel in the claims.

[0013] The lower transom 3 shown in Fig. 3 extends over substantially the entire length of the frame body 1 in the left-right direction. The lower transom 3 has a first hollow portion S31 and a second hollow portion S32. The first hollow portion S31 is disposed on the indoor side of the second hollow portion S32. The first hollow portion S31 and the second hollow portion S32 are formed over substantially the entire length of the lower transom 3 in the left-right direction.

[0014] The lower plate portion 31 is disposed along the lower end of the second hollow portion S32. The lower plate portion 31 is formed in a plate shape. The plate surface of the lower plate portion 31 faces the vertical direction. The lower plate portion 31 is formed with an outside air introduction hole 311 that penetrates in the vertical direction. A plurality of outside air introduction holes 311 are formed at intervals in the left-right direction of the lower transom 3. The outside air introduction holes 311 correspond to the second communication hole in the claims.

[0015] The outdoor side section 32 is disposed along the outdoor side of the second hollow section S32. The outdoor side section 32 is formed in a plate shape. The plate surface of the outdoor side section 32 faces the indoor / outdoor direction. The outdoor side section 32 is formed with an outdoor air introduction hole 321 penetrating in the indoor / outdoor direction. A plurality of the outdoor air introduction holes 321 are formed at intervals in the left-right direction of the lower transom 3. The outdoor air introduction hole 321 corresponds to a first communication hole in the claims.

[0016] The outdoor side portion 32 is provided with a locking piece 36. The locking piece 36 is provided over substantially the entire length of the lower interlining 3 in the left-right direction. The locking piece 36 has an outdoor-side extending wall portion 361 and an upward wall portion 362. The outdoor-side extending wall portion 361 extends from the outdoor side portion 32 to the outdoor side. The upward wall portion 362 extends upward from the tip of the outdoor-side extending wall portion 361.

[0017] The lower transom 3 is provided with a support plate portion 33 extending towards the outdoors. The support plate portion 33 is formed in a plate shape. The plate surface of the support plate portion 33 faces the up-down direction. The glass panel 4B is arranged slightly above the support plate portion 33. The support plate portion 33 is provided with a gasket 34. The gasket 34 is arranged between the lower end portion 4d of the glass panel 4B and the support plate portion 33. The support plate portion 33 supports the lower end portion 4d of the glass panel 4B via the gasket 34.

[0018] The upper interlining 22 is disposed below the lower interlining 3 and engages with the lower interlining 3. A gap S22 is formed in the vertical direction between the upper interlining 22 and the lower interlining 3. The air pressure in the gap S22 is the same as the external pressure.

[0019] An airtight material 226 is provided in the upper transom 22 so as to extend upward. The airtight material 226 is arranged in the gap S22. The airtight material 226 is provided in two places spaced apart in the indoor / outdoor direction. The tip of the airtight material 226 abuts against the lower surface of the lower transom 3. The airtight material 226 is provided on the outdoor side of the gap S22. The gap S22 is an external pressure space with the same pressure as the outside air. The gap S23 formed on the indoor side of the indoor-side airtight material 226 is an external pressure space with the same pressure as the outside air.

[0020] The upper transom 22 is provided with a connecting wall 227 extending upward. The upper end of the connecting wall 227 abuts the lower transom 3. Outside air introduction holes 228 penetrating in the indoor-outdoor direction are formed separately above and below the connecting wall 227. The gap S24 formed on the indoor side of the connecting wall 227 is an isobaric space designed so that the pressure difference with the outside pressure is 50 Pa or less.

[0021] The upper transom 22 extends over substantially the entire length of the frame body 1 in the left-right direction. The upper transom 22 has a hollow portion S221 and a hollow portion S222. The hollow portion S221 is disposed on the indoor side of the hollow portion S222. The hollow portions S221 and S222 are formed over substantially the entire length of the upper transom 22 in the left-right direction.

[0022] The attachment 5 is a member for attaching the glass panel 4B to the lower transom 3. The glass panel 4B is attached to the attachment 5. The attachment 5 is engaged with the lower transom 3.

[0023] The attachment 5 has a glass mounting plate portion 51 , a first extending plate portion 52 , a second extending plate portion 53 , a third extending plate portion 54 , and a locked piece portion 55 .

[0024] The glass mounting plate 51 is formed in a plate shape. The plate surface of the glass mounting plate 51 faces the indoor / outdoor direction. The glass mounting plate 51 is disposed on the indoor side of the glass panel 4B with a gap S1. The glass mounting plate 51 is disposed on the outdoor side of the outdoor-side portion 32 of the lower transom 3 with a gap S2.

[0025] In the gap S1, a structural sealant 61, a backer material 62, and a spacer 63 are arranged in a line from bottom to top. The structural sealant 61, the backer material 62, and the spacer 63 abut against the glass panel 4B and the glass mounting plate portion 51 of the attachment 5. The wind pressure acting on the glass panel 4B is supported by the adhesive force of the structural sealant 61 to the glass panel 4B.

[0026] A protrusion 511 protruding toward the outside is provided on the glass mounting plate 51. A spacer 63 is engaged with the protrusion 511.

[0027] The first extending plate portion 52 extends from the upper end of the glass mounting plate portion 51 toward the indoor side. The second extending plate portion 53 extends from the vertical middle portion of the glass mounting plate portion 51 toward the indoor side. The second extending plate portion 53 is disposed below the first extending plate portion 52. A space that opens toward the indoor side is formed by the glass mounting plate portion 51, the first extending plate portion 52, and the second extending plate portion 53. An airtight material 66 is sandwiched in the space formed by the glass mounting plate portion 51, the first extending plate portion 52, and the second extending plate portion 53. The airtight material 66 abuts against the outdoor side portion 32 of the lower transom 3.

[0028] The third extending plate portion 54 extends toward the indoor side from a vertical middle portion of the glass mounting plate portion 51. The third extending plate portion 54 is disposed below the second extending plate portion 53.

[0029] The locked piece 55 extends from the vertical middle part of the glass mounting plate 51 towards the indoor side. The locked piece 55 is disposed below the third extending plate 54. The locked piece 55 has an indoor side extending wall part 551 and a downward wall part 552. The indoor side extending wall part 551 extends from the glass mounting plate 51 towards the indoor side. The downward wall part 552 extends downward from the tip part of the indoor side extending wall part 551.

[0030] A space that opens to the indoor side is formed by the glass mounting plate 51, the third extension plate 54, and the indoor side extending wall 551. An airtight material 67 is sandwiched in the space formed by the glass mounting plate 51, the third extension plate 54, and the indoor side extending wall 551. The airtight material 67 abuts against the outdoor side portion 32 of the lower transom 3.

[0031] The airtight materials 66 and 67 provided on the attachment 5 come into contact with the outdoor side portion 32 of the lower interlining 3, thereby blocking the gap that occurs between the attachment 5 and the outdoor side portion 32.

[0032] Between the attachment 5 and the lower transom 3, a space S11 surrounded by the second extension plate portion 53, the glass mounting plate portion 51, the third extension plate portion 54 and the outdoor side portion 32 is formed.

[0033] An outside air introduction hole 321 formed in the outdoor side part 32 of the lower transom 3 connects the space S11 of the attachment 5 with the second hollow part S32 of the lower transom 3. The space S11 and the second hollow part S32 are equal-pressure spaces designed to have a pressure difference with respect to the outside pressure of 50 Pa or less. The space S11 corresponds to the space inside the attachment in the claims. The second hollow part S32 corresponds to the space inside the frame in the claims.

[0034] The second hollow portion S32 of the lower transom 3 is connected to the outside air by the outside air introduction hole 311 formed in the lower transom 3. The outside air introduction hole 321 and the outside air introduction hole 311 connect the space portion S11 of the attachment 5 to the outside air.

[0035] In the curtain wall 100, the space S11 of the attachment 5 and the second hollow section S32 of the lower transom 3 are connected by an outside air introduction hole 321 formed in the lower transom 3. By making the space S11 of the attachment 5 and the second hollow section S32 of the lower transom 3 have the same external pressure, it is possible to prevent water from entering the room through a small gap formed between the end of the first extending plate section 52 of the attachment 5 and the outdoor side section 32 of the lower transom 3.

[0036] The outside air introduction hole 311 formed directly in the lower transom 3 connects the second hollow portion S32 of the lower transom 3 with the outside air, making it possible to make the space portion S11 and the second hollow portion S32 the same as the outside pressure.

[0037] When the frame 1 of the curtain wall 100 deforms due to rocking during an earthquake, the attachment 5 is engaged with the lower transom 3, and therefore the attachment 5 can deform separately from the lower transom 3. The attachment 5 and the glass panel 4B connected to the attachment 5 deform differently from the frame 1, which prevents the structural sealant 61 from breaking or being damaged.

[0038] When replacing the glass panel 4B, the attachment 5 can be replaced as well, which provides good maintainability.

[0039] (Modification) The curtain wall according to the modified example will be described mainly with reference to Figures 4 and 5. In the modified example described below, the configurations corresponding to the embodiment described above may be denoted by the same reference numerals and the description thereof may be omitted.

[0040] 4, this modification uses a structural sealant 61C similar to the structural sealant 61 used in the above-described embodiment. The structural sealant 61C is provided between a plate-shaped aluminum panel 4C and a mullion 7 that is a part of the frame.

[0041] The aluminum panel 4C is formed in a plate shape. The plate surface of the aluminum panel 4C faces the indoor / outdoor direction.

[0042] The upright 7 extends in the vertical direction. The upright 7 has a first upright member 71 and a second upright member 76. The first upright member 71 has a generally C-shaped cross section that opens on one side in the left-right direction. The second upright member 76 has a generally C-shaped cross section that opens on the other side in the left-right direction. The first upright member 71 and the second upright member 76 are positioned with their open sides facing each other and joined together.

[0043] The first upright member 71 has an upright plate portion 72 that extends in the indoor / outdoor direction and the vertical direction. An extension plate portion 73 is provided on the outdoor side of the upright plate portion 72, extending in the left-right direction opposite the second upright member 76. The extension plate portion 73 is formed in a plate shape. The plate surface of the extension plate portion 73 faces the indoor / outdoor direction. A structural sealant 61C is provided in the space formed by the upright plate portion 72, the extension plate portion 73, and the aluminum panel 4C. The structural sealant 61C is in contact with the extension plate portion 73 and the aluminum panel 4C. The wind pressure acting on the aluminum panel 4C is supported by the adhesive force of the structural sealant 61C to the aluminum panel 4C.

[0044] The second upright member 76 has an upright plate portion 77 that extends in the indoor / outdoor direction and the vertical direction. An extension plate portion 78 is provided on the outdoor side of the upright plate portion 77, extending in the opposite direction to the first upright member 71 in the left-right direction. The extension plate portion 78 is formed in a plate shape. The plate surface of the extension plate portion 78 faces the indoor / outdoor direction. A structural sealant 61C is provided in the space formed by the upright plate portion 77, the extension plate portion 78, and the aluminum panel 4C. The structural sealant 61C is in contact with the extension plate portion 73 and the aluminum panel 4C. The wind pressure acting on the aluminum panel 4C is supported by the adhesive force of the structural sealant 61C to the aluminum panel 4C.

[0045] The mullion 7 has a first space S71, a second space S72, and a third space S73. The first space S71, the second space S72, and the third space S73 are arranged in this order from the indoor side to the outdoor side. The first space S71, the second space S72, and the third space S73 are formed over substantially the entire length of the mullion 7 in the vertical direction. The first space S71, the second space S72, and the third space S73 are spaces formed between the first mullion member 71 and the second mullion member 76. The third space S73 is open to the outdoor side.

[0046] As shown in Figure 5, a structural sealant 61D similar to the structural sealant 61 used in the embodiment shown above is provided between the aluminum panel 4C and the lower interlining 3D, and between the aluminum panel 4C and the upper interlining 22.

[0047] The configuration of the lower interlining 3D and the upper interlining 22D near the structural sealant 61D is an inverted configuration. The lower interlining 3D and the upper interlining 22 each have an interlining board portion 37 extending in the left-right direction and the up-down direction. The interlining board portion 37 is formed in a plate shape. The plate surface of the interlining board portion 37 faces the indoor / outdoor direction. The interlining board portion 37 is provided with an extension board portion 38 extending to the outdoor side. The structural sealant 61D is provided in the space formed by the interlining board portion 37, the extension board portion 38, and the aluminum panel 4C. The structural sealant 61D is in contact with the interlining board portion 37 and the aluminum panel 4C. The wind pressure acting on the aluminum panel 4C is supported by the adhesive force of the structural sealant 61D to the aluminum panel 4C.

[0048] The structural sealant 61C allows the aluminum panel 4C to be joined to the upright 7, the lower liner 3D, and the upper liner 22D. The aluminum panel 4C can be joined to the frames of the upright 7, the lower liner 3D, and the upper liner 22D without using fasteners such as stud bolts as in the past, improving workability.

[0049] Although the preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings, it goes without saying that the present disclosure is not limited to the examples. The shapes and combinations of the components shown in the above examples are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present disclosure.

[0050] In the embodiment described above, the outside air introduction hole 311 corresponding to the second communication hole is formed in the lower interlining 3, but this is not limited to this. A configuration in which another member (not shown) is connected to the lower interlining 3, a communication passage is formed between the lower interlining 3 and the other member, and a second communication hole communicating with outside air is formed in the other member may be used.

[0051] In the embodiment shown above, the lower interlining 3 is used as an example of a member in which the first communication hole is formed, but this is not limited to this. The first communication hole may be formed in the upper interlining 22, the middle interlining 24, the vertical frame 21, the mullion 7, etc.

[0052] (1) A frame for supporting the panel; an attachment attached to the panel and engaged with the frame; A curtain wall comprising: a first communication hole formed in the frame that connects the space inside the attachment with the space inside the frame. (2) The curtain wall according to (1) above, further comprising a second communication hole formed in the frame for communicating the space inside the frame with the outside air. (3) A curtain wall according to (1) or (2) above, wherein the frame is interlocking. [Explanation of symbols]

[0053] 3 Lower side without (frame), 4B Glass panel 4B (panel), 5 Attachment, 100 curtain wall, 311 outside air introduction hole (second communication hole), 321 outside air introduction hole (first communication hole)

Claims

1. A frame for supporting the panel; an attachment attached to the panel and engaged with the frame; A curtain wall comprising: a first communication hole formed in the frame that connects the space inside the attachment with the space inside the frame.

2. The curtain wall according to claim 1 , further comprising a second communication hole formed in the frame that communicates the space inside the frame with the outside air.

3. The curtain wall according to claim 1 or 2, wherein the frame is interlocking.

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