Curtain wall

Abstract

To improve water cut-off performance of a curtain wall having a vertical member and a horizontal member combined with two vertical frames.SOLUTION: A curtain wall 1 includes a vertical member 2 having a first vertical frame and a second vertical frame, a horizontal member 3 installed on the vertical member 2, and a panel 5 arranged in an opening 4 surrounded by the right and left vertical members 2 and the upper and lower horizontal members 3. The upper and lower horizontal members 3 have horizontal groove parts 5C, 5D for holding the horizontal edge part 5C, 5D of the panel 5 by interposing a sealant between the horizontal edge part 3C, 3D of the panel 5, and forming a horizontal constant pressure space 3A, 3B. The right and left vertical members 2 hold the vertical edge parts 5A and 5B of the panel 5 by interposing a sealing material between the vertical edge parts 5A and 5B of the panel 5, and have vertical groove parts 2C and 2D forming vertical constant pressure spaces 2A and communicated with the horizontal constant pressure space 3C and 3D. 2B. The first side frame and the second side frame have a connecting portion located at a position facing the 2D of the vertical isobaric space, and the connecting portion of the first side frame and the connecting portion of the second side frame are connected to each other with a sealing member sandwiched therebetween.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a curtain wall in which panels are placed in an opening surrounded by vertical members and horizontal members. [Background technology]

[0002] In a curtain wall comprising vertical members, horizontal members, and panels, multiple vertical members are installed at intervals, and multiple horizontal members are installed at intervals between adjacent left and right vertical members. Panels are placed in openings surrounded by the left and right vertical members and the upper and lower horizontal members, and are held in place by the left and right vertical members and the upper and lower horizontal members. A conventionally known example of this type of curtain wall is a curtain wall comprising a vertical member and a horizontal member, which are a combination of two separate mullions (a separate mullion on one side and a separate mullion on the other side) (see Patent Document 1).

[0003] In the conventional curtain wall described in Patent Document 1, the upright members are vertical members extending vertically, and the horizontal members are horizontal members extending horizontally. The two separate upright members of the upright member are vertical frames extending vertically, and their engaging pieces engage with each other at their exterior and interior joints to restrict their mutual displacement toward the interior and exterior of the room. However, in conventional curtain walls, the exterior joints of the two separate uprights are exposed to the outdoor space, which raises the risk of rainwater or other water entering between the two separate uprights at the exterior joint. In this case, there is a concern that water may penetrate through the interior of the upright members and reach the interior of the upright members, potentially affecting the waterproofing of the curtain wall. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-138852 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in consideration of the above-mentioned conventional problems, and its purpose is to improve the water-tightness of a curtain wall having vertical members and horizontal members each made up of two vertical frames. [Means for solving the problem]

[0006] The present invention provides A curtain wall comprising a plurality of vertical members each having a first vertical frame and a second vertical frame combined with each other, a plurality of horizontal members installed on adjacent vertical members, and a panel arranged in an opening surrounded by the left and right vertical members and the top and bottom horizontal members, The upper and lower horizontal members have horizontal grooves that hold the horizontal edges of the panels by interposing a sealant between the horizontal members and the horizontal edges of the panels, thereby forming a horizontal equal pressure space; The left and right vertical members are curtain walls having vertical grooves that hold the vertical edges of the panels together with sealing material interposed between them, forming vertical equal-pressure spaces that communicate with the horizontal equal-pressure spaces. [Effects of the Invention]

[0007] According to the present invention, it is possible to improve the water-stopping properties of a curtain wall having vertical members and horizontal members each made up of two vertical frames. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a front view showing the curtain wall of this embodiment. [Figure 2] FIG. 2 is a vertical cross-sectional view showing the curtain wall of the present embodiment. [Figure 3] FIG. 2 is a cross-sectional view showing the curtain wall of the present embodiment. [Figure 4] FIG. 2 is a vertical cross-sectional view showing the cross member of the curtain wall of this embodiment. [Figure 5] FIG. 2 is a cross-sectional view showing the vertical members of the curtain wall of this embodiment. [Figure 6] FIG. 2 is a cross-sectional view showing the vertical members of the curtain wall of this embodiment. [Figure 7] FIG. 2 is a perspective view showing the connection points between the vertical members and the horizontal members of the curtain wall of the present embodiment. [Figure 8] FIG. 2 is a perspective view showing the connection points between the vertical members and the horizontal members of the curtain wall of the present embodiment. [Figure 9] FIG. 2 is a front view schematically showing an isobaric space surrounding one panel of the curtain wall of this embodiment. [Figure 10] FIG. 1 is a perspective view showing the construction procedure of the curtain wall of this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of the curtain wall of the present invention will be described with reference to the drawings. The curtain wall of this embodiment is a wall used as the exterior wall of a building. The curtain wall is an exterior wall of a building, and is installed between the indoor (indoor) and outdoor (outdoor) of the building to form the exterior wall of the building.

[0010] Fig. 1 is a front view showing the curtain wall 1 of this embodiment, showing a portion of the curtain wall 1 installed in a building 10 as viewed from the outdoor side. Fig. 2 is a longitudinal cross-sectional view showing the curtain wall 1 of this embodiment, showing the curtain wall 1 and a portion of the building 10 cut along a plane including the up-down direction R and the indoor-outdoor direction T. Fig. 3 is a transverse cross-sectional view showing the curtain wall 1 of this embodiment, showing the curtain wall 1 cut along a plane including the left-right direction S and the indoor-outdoor direction T.

[0011] When the curtain wall 1 installed on the building 10 is viewed from the front, the direction that is up and down is the up-down direction R, and the direction that is left and right is the left-right direction S. In FIG. 1, the up-down direction R is the vertical direction, and the left-right direction S is the horizontal direction. The indoor-outdoor direction T is the indoor-outdoor direction (indoor-outdoor direction) of the curtain wall 1 installed on the building 10. Furthermore, the indoor-outdoor direction T is the front-to-back direction (depth direction) and the thickness direction of the curtain wall 1 when viewed from the front of the curtain wall 1 installed on the building 10, and in FIG. 3 is the horizontal direction perpendicular to the left-to-right direction S. In this way, the directions related to the curtain wall 1 are specified as directions when the curtain wall 1 is installed on the building 10. Furthermore, the indoor side and outdoor side of the curtain wall 1 are the indoor side and outdoor side when the curtain wall 1 is installed on the building 10.

[0012] As shown in the figure, the building 10 comprises a curtain wall 1, an exterior wall 11, a skeleton 12, a boundary portion 13 between the upper and lower floors of the building 10, and floor portions 14 of each floor of the building 10. The skeleton 12, boundary portion 13, and floor portions 14 of the building 10 are located on the indoor side of the curtain wall 1. The boundary portion 13 is a portion located at the boundary between the upper and lower floors of the building 10, and is located between the floor portion 14 of the upper floor and the floor portion 14 of the lower floor. The floor portion 14 is an indoor usable portion of the building 10, and is located between the upper and lower boundary portions 13.

[0013] The curtain wall 1 is installed on an exterior wall 11 of the building 10, and constitutes the exterior wall 11 of the building 10. The curtain wall 1 is also disposed on the outdoor side of the skeleton 12 of the building 10 and attached to the skeleton 12 of the building 10. In this state, the curtain wall 1 is located between a boundary portion 13 of the building 10 and an outdoor space 15, and between a floor portion 14 of the building 10 and the outdoor space 15, and is exposed to the outside air. The outdoor space 15 is the space outside the building 10 and the curtain wall 1, and the outside air is the air in the outdoor space 15.

[0014] The curtain wall 1 comprises a spandrel section 1A and a vision section 1B adjacent to each other in the vertical direction R. The spandrel sections 1A and the vision sections 1B are provided alternately in the vertical direction R on the curtain wall 1, and are also provided side by side in the left-right direction S. The spandrel section 1A is a waist section located on the outdoor side of the boundary section 13 of the building 10, and is located between the boundary section 13 of the building 10 and the outdoor space 15 in the indoor-outdoor direction T, facing the boundary section 13. The vision section 1B is a window section located on the outdoor side of a floor section 14 of the building 10, and is located between the floor section 14 of the building 10 and the outdoor space 15 in the indoor-outdoor direction T, facing the floor section 14.

[0015] The curtain wall 1 comprises a plurality of vertical members 2, a plurality of horizontal members 3 attached to the vertical members 2, a plurality of openings 4 formed by the vertical members 2 and the horizontal members 3, and a plurality of panels 5 arranged in the openings 4. The openings 4 are formed in each of the spandrel section 1A and the vision section 1B, and are arranged side by side in the up-down direction R and the left-right direction S. The panels 5 are panel materials (surface materials) that make up the exterior wall surface of the building 10, and are arranged in each of the spandrel section 1A and the vision section 1B, and are held by the vertical members 2 and the horizontal members 3. The panels 5 are rectangular glass panels (e.g., plate glass, double-glazed glass, or laminated glass) and are fixed panels that are fixed to the rectangular opening 4 to close it. The multiple panels 5 are arranged side by side in the up-down direction R and the left-right direction S.

[0016] The vertical members 2 and horizontal members 3 are forming members that form the opening 4, and each is made of a metal (for example, aluminum alloy) shaped member (extruded member) formed by extrusion molding. The vertical members 2 are mullion members that extend vertically (up-down direction R) and are located on the left and right sides of the opening 4. The horizontal members 3 are unjoined members that extend horizontally (left-right direction S) and are located at the top and bottom of the opening 4. The opening 4 is surrounded by the upper and lower horizontal members 3 and the left and right vertical members 2, respectively. The longitudinal direction of the vertical members 2 is the up-down direction R, and the longitudinal direction of the horizontal members 3 is the left-right direction S.

[0017] The vertical members 2 are installed at intervals in the left-right direction S, are arranged on the outdoor side of the skeleton 12 of the building 10, and are attached to the skeleton 12 of the building 10. The multiple vertical members 2 are spaced apart from one another in the left-right direction S, and are arranged side by side in order in the left-right direction S on the exterior wall 11 of the building 10. A horizontal member 3 is arranged between each of the vertical members 2 adjacent to one another in the left-right direction S, and is bridged between the vertical members 2, with its left and right ends connected to the left and right vertical members 2. Between the vertical members 2 adjacent to one another in the left-right direction S, the multiple horizontal members 3 are arranged at intervals in the up-down direction R and are attached to the left and right vertical members 2. The multiple horizontal members 3 are spaced apart from one another in the up-down direction R, and are arranged side by side in order in the up-down direction R on the exterior wall 11 of the building 10.

[0018] The multiple vertical members 2 and multiple horizontal members 3 are combined in a lattice (frame) shape to form multiple openings 4. The multiple openings 4 are formed on both the left and right sides of the vertical members 2 in the left-right direction S, and on both the top and bottom sides of the horizontal members 3 in the up-down direction R. Furthermore, multiple panels 5 are arranged on both the left and right sides of the vertical members 2 in the left-right direction S, and on both the top and bottom sides of the horizontal members 3 in the up-down direction R. The vertical members 2 are located between the left and right openings 4 and between the left and right panels 5, and the horizontal members 3 are located between the top and bottom openings 4 and between the top and bottom panels 5.

[0019] The panel 5 has left and right vertical edges 5A, 5B and top and bottom horizontal edges 5C, 5D. The vertical edges 5A, 5B and the horizontal edges 5C, 5D are edges located on the outer periphery of the panel 5 and connect to each other at the corners of the panel 5. The vertical edges 5A, 5B are edges located on the left and right sides of the panel 5 and extend vertically. The horizontal edges 5C, 5D are edges located on the top and bottom of the panel 5 (upper edge and lower edge) and extend horizontally. The panel 5 is surrounded by left and right vertical members 2 and top and bottom horizontal members 3 and is placed in the opening 4. In this state, the left and right vertical edges 5A, 5B of the panel 5 are held by the left and right vertical members 2, and the top and bottom horizontal edges 5C, 5D of the panel 5 are held by the top and bottom horizontal members 3.

[0020] The vertical members 2 are adjacent to each other in the left-right direction S, with the opening 4 and the panel 5 sandwiched between them, and are arranged along the left and right vertical edges 5A, 5B of the panel 5. The horizontal members 3 are installed across the adjacent left and right vertical members 2, and are spaced apart in the up-down direction R between the left and right vertical members 2. The horizontal members 3 are also adjacent to each other in the up-down direction R, with the opening 4 and the panel 5 sandwiched between them, and are arranged along the top and bottom horizontal edges 5C, 5D of the panel 5. The opening 4 is defined and formed by the left and right vertical members 2 and the top and bottom horizontal members 3.

[0021] FIG. 4 is a vertical cross-sectional view showing the location of the horizontal member 3 of the curtain wall 1 of this embodiment, and shows the curtain wall 1 cut along the line X1-X1 in FIG. As shown in the figure, the horizontal member 3 has a crosspiece 20 that holds the horizontal edges 5C, 5D of the panel 5 on the indoor side, and a batten 30 that is attached to the crosspiece 20 and holds the horizontal edges 5C, 5D of the panel 5 on the outdoor side. The crosspiece 3 holds the horizontal edges 5C, 5D of the panels 5 above and below the horizontal member 3 with the crosspiece 20 and batten 30.

[0022] The crosspieces 20 and the battens 30 extend parallel to each other in the horizontal direction and are arranged along the horizontal edges 5C, 5D of the upper and lower panels 5. The crosspieces 20 are the base material of the horizontal members 3 and are attached to the left and right vertical members 2, and are arranged on the indoor side of the horizontal edges 5C, 5D of the upper and lower panels 5. The battens 30 are located on the outdoor side of the crosspieces 20 and are arranged on the outdoor side of the horizontal edges 5C, 5D of the upper and lower panels 5. The horizontal edges 5C, 5D of the upper and lower panels 5 of the horizontal members 3 are arranged between the crosspieces 20 and the battens 30 in the indoor-outdoor direction T, and are held between them.

[0023] The crosspiece 20 has a main body material 21 and a horizontal attachment member 22 attached to the main body material 21. The crosspiece 20 also has an upper-side retaining portion 23 attached to the horizontal attachment member 22, and an under-story retaining portion 24 and an overhanging portion 25 attached to the main body material 21. The horizontal attachment member 22 protrudes from the main body material 21 toward the outdoors and is positioned on the indoor side of the horizontal edge portion 5D of the panel 5. The upper-side retaining portion 23 and the under-story retaining portion 24 are indoor-side retaining portions that hold the horizontal edges 5C, 5D of the panels 5 above and below the horizontal member 3 on the indoor side, and are located on the indoor side of the horizontal edges 5C, 5D of the panel 5 and are arranged opposite the horizontal edges 5C, 5D of the panel 5 in the indoor-outdoor direction T.

[0024] The roof inner retaining portion 23 is the upper roof inner retaining portion of the cross member 20 and the horizontal member 3, and the roof inner retaining portion 24 is the lower roof inner retaining portion of the cross member 20 and the horizontal member 3. A sealing material 26 is sandwiched between the horizontal edge 5D of the panel 5 above the horizontal member 3 and the roof inner retaining portion 23. The sealing material 26 is a gasket and is attached to the roof inner retaining portion 23. A sealing material 27 is sandwiched between the horizontal edge 5C of the panel 5 below the horizontal member 3 and the roof inner retaining portion 24. The sealing material 27 is a sealing material that is received by the backup material 27A and is filled between the horizontal edge 5C of the panel 5 and the roof inner retaining portion 24. The extension portion 25 is located between the roof inner retaining portion 23 and the roof inner retaining portion 24 in the vertical direction R, and extends toward the outdoors.

[0025] The batten 30 is attached to the overhanging portion 25 of the crosspiece 20, and is disposed from the overhanging portion 25 to the outdoor sides of the lateral edges 5C, 5D of the upper and lower panels 5. The batten 30 also has an upper outdoor holding portion 31, a lower outdoor holding portion 32, and an attachment piece 33. The upper outdoor holding portion 31 and the lower outdoor holding portion 32 are outdoor-side holding portions that hold the lateral edges 5C, 5D of the upper and lower panels 5 of the cross member 3 on the outdoor side, and are positioned on the outdoor side of the lateral edges 5C, 5D of the panel 5, facing the lateral edges 5C, 5D of the panel 5 in the indoor-outdoor direction T.

[0026] The upper outdoor-side retaining portion 31 is the upper outdoor-side retaining portion of the batten 30 and the horizontal member 3, and the lower outdoor-side retaining portion 32 is the lower outdoor-side retaining portion of the batten 30 and the horizontal member 3. A sealant 34 is sandwiched between the horizontal edge 5D of the panel 5 above the horizontal member 3 and the upper outdoor-side retaining portion 31. The sealant 34 is a sealing material that is received by a backup material 34A and filled between the horizontal edge 5D of the panel 5 and the upper outdoor-side retaining portion 31. A sealant 35 is sandwiched between the horizontal edge 5C of the panel 5 below the horizontal member 3 and the lower outdoor-side retaining portion 32. The sealant 35 is a sealing material that is received by a backup material 35A and filled between the horizontal edge 5C of the panel 5 and the lower outdoor-side retaining portion 32.

[0027] The mounting piece 33 is located between the upper outdoor holding portion 31 and the lower outdoor holding portion 32 in the vertical direction R, and protrudes toward the indoor side. The mounting piece 33 is located below the overhanging portion 25 of the transom 20, and is engaged with the overhanging portion 25. In this way, the mounting piece 33 and the batten 30 are attached to the overhanging portion 25 and the transom 20.

[0028] The horizontal member 3 has two upper and lower horizontal grooves 3A, 3B (first horizontal groove 3A and second horizontal groove 3B). The horizontal grooves 3A, 3B are horizontal accommodation grooves that accommodate the horizontal edge portions 5C, 5D of the panel 5, respectively. They are formed into a concave shape by the crosspiece 20 and the batten 30 of the horizontal member 3 and extend in the longitudinal direction (horizontal direction) of the horizontal member 3. The first horizontal groove 3A is a lower horizontal groove located on the lower side of the horizontal member 3, and is arranged downward and open toward the lower side of the horizontal member 3. The second horizontal groove 3B is an upper horizontal groove located on the upper side of the horizontal member 3, and is arranged upward and open toward the upper side of the horizontal member 3. The second horizontal groove 3B includes a horizontal mounting member 22 of the crosspiece 20, and the indoor-facing portion of the second horizontal groove 3B is covered by the horizontal mounting member 22 of the crosspiece 20.

[0029] The horizontal edge 5C of the panel 5 below the horizontal member 3 is received in and held by the first horizontal groove 3A. The horizontal edge 5D of the panel 5 above the horizontal member 3 is received in and held by the second horizontal groove 3B. The horizontal grooves 3A and 3B of the horizontal member 3 hold the horizontal edges 5C and 5D of the panel 5 with sealants 26, 27, 34, and 35 interposed between them. In this state, the horizontal grooves 3A and 3B of the horizontal member 3 form two upper and lower horizontal isopressure spaces 3C and 3D (first horizontal isopressure space 3C and second horizontal isopressure space 3D). The horizontal isopressure spaces 3C and 3D are isopressure spaces that extend in the longitudinal direction (horizontal direction) of the horizontal member 3 and extend along the horizontal edges 5C and 5D of the panel 5 and the horizontal grooves 3A and 3B. The isobaric space is a space having a pressure equal to the air pressure (outside air pressure) of the outdoor space 15 (outside air), and is in communication with the outdoor space 15.

[0030] The first lateral isobaric space 3C is a lower lateral isobaric space located on the lower side of the horizontal member 3, and the second lateral isobaric space 3D is an upper lateral isobaric space located on the upper side of the horizontal member 3. The lateral isobaric spaces 3C and 3D are spaces surrounded by the lateral grooves 3A and 3B, the lateral edge portions 5C and 5D of the panel 5, and the sealing materials 26, 27, 34, and 35 sandwiched between the lateral grooves 3A and 3B and the lateral edge portions 5C and 5D of the panel 5, and are formed inside the lateral grooves 3A and 3B. The horizontal member 3 has a communication portion 3E that connects the lateral isobaric spaces 3C and 3D (here, the second lateral isobaric space 3D) to the outdoor space 15. The communication portion 3E is located between the second lateral isobaric space 3D and the outdoor space 15, and connects the second lateral isobaric space 3D to the outdoor space 15, thereby connecting the second lateral isobaric space 3D to the outdoor space 15.

[0031] The communication section 3E has an internal space 36 of the ridge 30, a first communication hole 36A that connects the internal space 36 with the second horizontal isobaric space 3D, and a second communication hole 36B that connects the internal space 36 with the outdoor space 15, and extends downward from the second horizontal isobaric space 3D toward the outdoor space 15. The communication section 3E also serves as a drainage section that drains water from the second horizontal isobaric space 3D toward the outdoor space 15.

[0032] FIG. 5 is a cross-sectional view showing the vertical member 2 of the curtain wall 1 of this embodiment, showing the vision portion 1B of the curtain wall 1 cut along the line X2-X2 in FIG. As shown in the figure, the vertical member 2 is a divided vertical member divided into left and right halves, and has two combined vertical frames 40, 50 (a first vertical frame 40 and a second vertical frame 50), and a hollow portion 60 formed by the first vertical frame 40 and the second vertical frame 50. The vertical frames 40, 50 of the vertical member 2 hold the vertical edge portions 5A, 5B of the left and right panels 5 of the vertical member 2. The vertical frames 40, 50 are divided members that make up the vertical member 2, and extend parallel to each other in the vertical direction, arranged along the vertical edge portions 5A, 5B of the left and right panels 5. The first vertical frame 40 is located on one side of the vertical member 2 in the left-right direction S, and the second vertical frame 50 is located on the other side of the vertical member 2 in the left-right direction S.

[0033] The horizontal member 3 is installed on a first vertical frame 40 of one vertical member 2 and a second vertical frame 50 of the other vertical member 2, which are adjacent to each other with the opening 4 in between. The first vertical frame 40 has a first indoor-side retaining portion 41, a first indoor-side portion 42, a first connecting portion 43, a projecting wall portion 44, a first outdoor-side retaining portion 45, and a second outdoor-side retaining portion 46. The second vertical frame 50 has a second indoor-side retaining portion 51, a second indoor-side portion 52, and a second connecting portion 53. The first indoor-side retaining portion 41 and the second indoor-side retaining portion 51 are indoor-side retaining portions that retain the vertical edge portions 5A, 5B of the left and right panels 5 of the vertical member 2 on the indoor side, and are located on the indoor side of the vertical edge portions 5A, 5B of the panel 5, facing the vertical edge portions 5A, 5B of the panel 5 in the indoor-outdoor direction T.

[0034] The first indoor side retaining portion 41 is an indoor side retaining portion on one side in the left-right direction S of the vertical member 2, and the second indoor side retaining portion 51 is an indoor side retaining portion on the other side in the left-right direction S of the vertical member 2. Sealing materials 47, 54 are sandwiched between the vertical edge portions 5A, 5B of the panel 5 and the indoor side retaining portions 41, 51 (first indoor side retaining portion 41, second indoor side retaining portion 51). The sealing materials 47, 54 are sealing materials that are received by backup materials 47A, 54A and filled between the vertical edge portions 5A, 5B of the panel 5 and the indoor side retaining portions 41, 51.

[0035] The indoor side portions 42, 52 (first indoor side portion 42, second indoor side portion 52) are indoor side portions of the vertical frames 40, 50, and are located on the indoor side of the indoor side holding portions 41, 51, facing each other in the left-right direction S. The hollow portion 60 of the vertical member 2 is a hollow portion surrounded by the left and right vertical frames 40, 50, and is formed between the indoor side portions 42, 52 of the left and right vertical frames 40, 50. The hollow portion 60 is located on the indoor side of the indoor side holding portions 41, 51 and the connecting portions 43, 53 (first connecting portion 43, second connecting portion 53), extends in the longitudinal direction of the vertical member 2, and is open toward the top and bottom of the vertical member 2.

[0036] The connection portions 43, 53 are portions where the left and right vertical frames 40, 50 are connected to each other. They are located on the outdoor side of the hollow portion 60 and on the indoor side of the vertical edges 5A, 5B of the panel 5. The second connection portion 53 is located on the indoor side of the first connection portion 43, and the two connection portions 43, 53 face each other in the indoor-outdoor direction T. A sealant 61 is sandwiched between the two connection portions 43, 53. The sealant 61 is an elastically deformable rubber sealant that is attached to one of the two connection portions 43, 53, the first connection portion 43, to seal the area between the two connection portions 43, 53. The first connection portion 43 and the second connection portion 53 are connected to each other via the sealant 61 sandwiched between them.

[0037] The protruding wall portion 44 of the first vertical frame 40 protrudes from the first connecting portion 43 to the outdoor side, is located on the outdoor side of the first connecting portion 43, and is arranged between the vertical edge portions 5A, 5B of the left and right panels 5 of the vertical member 2 in the left-right direction S. The outdoor-side holding portions 45, 46 (first outdoor-side holding portion 45, second outdoor-side holding portion 46) are outdoor-side holding portions that hold the vertical edge portions 5A, 5B of the left and right panels 5 of the vertical member 2 on the outdoor side, and protrude in the left-right direction S from the outdoor-side end of the protruding wall portion 44.

[0038] The outdoor-side retaining portions 45, 46 are located on the outdoor side of the vertical edge portions 5A, 5B of the panel 5, and are arranged opposite the vertical edge portions 5A, 5B of the panel 5 in the indoor-outdoor direction T. Sealing materials 48, 49 are sandwiched between the vertical edge portions 5A, 5B of the panel 5 and the outdoor-side retaining portions 45, 46. The sealing materials 48, 49 are sealing materials that are received by backup materials 48A, 49A and filled between the vertical edge portions 5A, 5B of the panel 5 and the outdoor-side retaining portions 45, 46.

[0039] The vertical member 2 has two vertical grooves 2A, 2B (first vertical groove 2A, second vertical groove 2B) on the left and right. The vertical grooves 2A, 2B are vertical accommodation grooves that accommodate the vertical edge portions 5A, 5B of the panel 5, respectively, and are formed in a concave shape by the first vertical frame 40 and the second vertical frame 50, and extend in the longitudinal direction (vertical direction) of the vertical member 2. The first vertical groove 2A is located on one side of the vertical member 2 in the left-right direction S, and is arranged toward one side of the vertical member 2, and is open toward that side of the vertical member 2. The first vertical groove 2A is formed only by the first vertical frame 40 (first indoor-side retaining portion 41, first connecting portion 43, projecting wall portion 44, and first outdoor-side retaining portion 45). The second vertical groove portion 2B is located on the other side of the vertical member 2 in the left-right direction S, is arranged facing the other side of the vertical member 2, and is open toward the other side of the vertical member 2. The second vertical groove portion 2B is formed by the first vertical frame 40 (first connection portion 43, projecting wall portion 44, second outdoor-side holding portion 46) and the second vertical frame 50 (second indoor-side holding portion 51, second connection portion 53).

[0040] Of the left and right panels 5 of the vertical member 2, the vertical edge 5A of the panel 5 on one side of the vertical member 2 is accommodated in and held by the first vertical groove 2A. Furthermore, the vertical edge 5B of the panel 5 on the other side of the vertical member 2 is accommodated in and held by the second vertical groove 2B. The vertical grooves 2A, 2B of the vertical member 2 hold the vertical edge portions 5A, 5B of the panel 5 with sealing materials 47, 48, 49, 54 interposed between them. In this state, the vertical member 2 forms two left and right vertical isopressure spaces 2C, 2D (first vertical isopressure space 2C, second vertical isopressure space 2D) by the vertical grooves 2A, 2B. The vertical equalizing pressure spaces 2C and 2D are equalizing pressure spaces extending in the longitudinal direction (vertical direction) of the vertical member 2, and extend along the vertical edge portions 5A and 5B of the panel 5 and the vertical groove portions 2A and 2B.

[0041] The first vertical isopressure space 2C is a vertical isopressure space located on one side of the vertical member 2 in the left-right direction S, and the second vertical isopressure space 2D is a vertical isopressure space located on the other side of the vertical member 2 in the left-right direction S. The vertical isopressure spaces 2C and 2D are spaces surrounded by the vertical grooves 2A and 2B, the vertical edge portions 5A and 5B of the panel 5, and the sealing materials 47, 48, 49, and 54 sandwiched between the vertical grooves 2A and 2B and the vertical edge portions 5A and 5A of the panel 5, and are formed inside the vertical grooves 2A and 2B. The vertical isopressure spaces 2C and 2D are connected to the horizontal isopressure spaces 3C and 3D and communicate with the horizontal isopressure spaces 3C and 3D, and also communicate with the outdoor space 15 via the second horizontal isopressure space 3D and the communication portion 3E.

[0042] The first connection portion 43 of the first vertical frame 40 and the second connection portion 53 of the second vertical frame 50 are located at a position facing one of the left and right vertical isobaric spaces 2C, 2D (here, the second vertical isobaric space 2D). The connection portions 43, 53 are located on the indoor side of the second vertical groove portion 2B and at a position on the indoor side of the second vertical isobaric space 2D, and are exposed to the second vertical isobaric space 2D. The first vertical frame 40 and the second vertical frame 50 are connected to each other by the connection portions 43, 53 at a position on the indoor side of the second vertical isobaric space 2D and at a position facing the second vertical isobaric space 2D. The connection portions 43, 53 are located between the second vertical isobaric space 2D and the internal space of the hollow portion 60 without being exposed to the outdoor space 15, and face both the second vertical isobaric space 2D and the internal space of the hollow portion 60. Therefore, water is less likely to infiltrate the area between the connecting portions 43, 53, and water is prevented from infiltrating into the interior of the vertical member 2 (the internal space of the hollow portion 60) from the area between the connecting portions 43, 53.

[0043] FIG. 6 is a cross-sectional view showing the location of the vertical member 2 of the curtain wall 1 of this embodiment, showing the spandrel portion 1A of the curtain wall 1 cut along the line X3-X3 in FIG. As shown in the figure, in the spandrel portion 1A of the curtain wall 1, the vertical member 2 has vertical mounting members 2E and 2F (first vertical mounting member 2E, second vertical mounting member 2F) attached to the first vertical frame 40 and the second vertical frame 50, respectively. The vertical member 2 also has indoor-side retaining portions 2G and 2H (first indoor-side retaining portion 2G, second indoor-side retaining portion 2H) attached to the vertical mounting members 2E and 2F, respectively. The first vertical mounting member 2E protrudes from the first vertical frame 40 toward the outdoor side and is positioned on the indoor side of the vertical edge portion 5A of the panel 5. The second vertical mounting member 2F protrudes from the second vertical frame 50 toward the outdoor side and is positioned on the indoor side of the vertical edge portion 5B of the panel 5.

[0044] The indoor-side retaining portions 2G, 2H of the vertical mounting members 2E, 2F correspond to the indoor-side retaining portions 41, 51 of the vertical frames 40, 50 in the vision section 1B. Sealing materials 2I, 2J are sandwiched between the vertical edge portions 5A, 5B of the panel 5 and the indoor-side retaining portions 2G, 2H. The sealing materials 2I, 2J are gaskets that are attached to the indoor-side retaining portions 2G, 2H. The vertical groove portions 2A, 2B of the vertical member 2 hold the vertical edge portions 5A, 5B of the panel 5 with sealing materials 2I, 2J, 48, 49 interposed between them. The vertical groove portions 2A, 2B include the vertical mounting members 2E, 2F, and the indoor-side portions of the vertical groove portions 2A, 2B are covered by the vertical mounting members 2E, 2F.

[0045] 7 and 8 are perspective views showing the connection points between the vertical members 2 and the horizontal members 3 of the curtain wall 1 of this embodiment, and omit the illustration of the battens 30 of the horizontal members 3 and the horizontal attachment members 22. Figure 8 shows two vertical members 2 adjacent to each other in the vertical direction R. As shown in the figure, the curtain wall 1 is equipped with a sealing member 6 that seals the area between the horizontal grooves 3A, 3B of the horizontal member 3 and the vertical grooves 2A, 2B of the vertical member 2. The sealing member 6 is a partitioning member that separates the vertical equal-pressure spaces 2C, 2D in the up-down direction R, and is arranged on both sides of the vertical member 2 in the left-right direction S, from the inside of the second horizontal groove 3B to the inside of the vertical grooves 2A, 2B. The sealing member 6 is fixed to the horizontal member 3 (here, the protruding portion 25 of the interlock 20) ​​(see Figure 4) and attached to the second horizontal groove 3B and the vertical grooves 2A, 2B.

[0046] The blocking material 6 is positioned inside the second horizontal groove portion 3B and inside the vertical groove portions 2A, 2B, covers the area (gap 2K) between the second horizontal groove portion 3B and the vertical groove portions 2A, 2B, and blocks the area between the second horizontal groove portion 3B and the vertical groove portions 2A, 2B. The gap 2K is positioned inside each of the vertical groove portions 2A, 2B, and is also positioned between the upper vertical isobaric spaces 2C, 2D formed above the horizontal member 3 and the lower vertical isobaric spaces 2C, 2D formed below the horizontal member 3, and is blocked by the blocking material 6. The blocking material 6 is positioned between the upper and lower vertical isobaric spaces 2C, 2D of the horizontal member 3, and separates the upper and lower vertical isobaric spaces 2C, 2D.

[0047] The sealing material 6 has an indoor side portion 6A, which is the indoor side portion of the sealing material 6, and an outdoor side portion 6B, which is the outdoor side portion of the sealing material 6. The indoor side portion 6A is a plate material made of metal or synthetic resin, and is located on the indoor side of the outdoor side portion 6B, and is placed on the horizontal member 3 inside the second horizontal groove portion 3B. The outdoor side portion 6B is made of an elastic material that can be elastically deformed, such as silicone sponge, and is located on the outdoor side of the indoor side portion 6A, and is placed on the batten 30 (here, the mounting piece 33 of the batten 30) inside the second horizontal groove portion 3B (see Figure 4).

[0048] The indoor side portion 6A of the sealing material 6 seals the area between the second horizontal groove portion 3B and the vertical groove portions 2A, 2B (the indoor side portion of the gap 2K), and also seals the area between the cross member 3's cross groove 20 and the vertical groove portions 2A, 2B. The batten 30 presses the outdoor side portion 6B of the sealing material 6 toward the indoor side, elastically deforming the outdoor side portion 6B, and is attached to the batten 20. The outdoor side portion 6B is positioned between the batten 20 and the batten 30, comes into contact with the batten 30, and is sandwiched between the batten 20 and the batten 30. In a state where the outdoor side portion 6B is elastically deformed between the batten 20 and the batten 30, it seals the area between the second horizontal groove portion 3B and the vertical groove portions 2A, 2B (the outdoor side portion of the gap 2K), and also seals the area between the batten 30 of the horizontal material 3 and the vertical groove portions 2A, 2B.

[0049] The vertical members 2 are installed side by side in the vertical direction R, and are connected vertically and joined to each other. The curtain wall 1 is provided with connecting materials 62 for connecting the vertical members 2, which are located inside the hollow portions 60 of the vertical members 2 (see Figure 8). The connecting materials 62 are cylindrical sleeve materials that connect the vertically connected vertical members 2 together, connecting the upper and lower vertical members 2. The connecting materials 62 are provided together with packings 63 inside the hollow portions 60 of the vertical members 2 that are connected vertically. The packings 63 are made of, for example, silicone sponge, and are filled between the connecting materials 62 and the vertical members 2 inside the hollow portions 60. The hollow portions 60, the connecting materials 62, and the packings 63 are located on the indoor side of the vertical groove portions 2A, 2B and the vertical equal-pressure spaces 2C, 2D.

[0050] The joining material 62 is fixed to the hollow portion 60 of the lower vertical member 2 of the vertical members 2 connected vertically, and protrudes upward from the hollow portion 60 of the lower vertical member 2. In this state, the joining material 62 is located inside the hollow portion 60 of each of the upper and lower vertical members 2, and fits into the hollow portions 60 of the upper and lower vertical members 2. The joining material 62 joins the hollow portion 60 of the upper vertical member 2 to the hollow portion 60 of the lower vertical member 2, and the hollow portions 60 of the upper and lower vertical members 2 are joined together. The area between the hollow portions 60 of the upper and lower vertical members 2 is closed and sealed with a packing 63.

[0051] FIG. 9 is a front view schematically showing the isobaric spaces 2C, 2D, 3C, and 3D surrounding one panel 5 of the curtain wall 1 of this embodiment, showing the general configuration of the curtain wall 1 as viewed from the outdoor side. As shown in the figure, in each of the spandrel section 1A and the vision section 1B, the upper and lower horizontal members 3 of the panel 5 have horizontal grooves 3A and 3B that form horizontal isobaric spaces 3C and 3D. In addition, the left and right vertical members 2 of the panel 5 have vertical grooves 2A and 2B that form vertical isobaric spaces 2C and 2D that communicate with the horizontal isobaric spaces 3C and 3D. The vertical isobaric spaces 2C and 2D and the horizontal isobaric spaces 3C and 3D are connected to each other at the corners of the panel 5 and at the points where the horizontal members 3 and the vertical members 2 connect (points where the horizontal grooves 3A and 3B connect to the vertical grooves 2A and 2B), and are formed along the outer periphery of the panel 5, surrounding the panel 5.

[0052] The blocking material 6 is located at the lower end of the vertical isobaric spaces 2C and 2D among the vertical and horizontal isobaric spaces 2C, 2D, 3C, and 3D surrounding the panel 5, and receives water flowing down inside the vertical isobaric spaces 2C and 2D (vertical grooves 2A and 2B). This prevents water from entering the gap 2K between the second horizontal groove 3B and the vertical grooves 2A and 2B, and guides water to the second horizontal isobaric space 3D (second horizontal groove 3B) below the panel 5. The blocking material 6 prevents water from flowing from the vertical isobaric spaces 2C and 2D above the blocking material 6 through the gap 2K to the vertical isobaric spaces 2C and 2D below the blocking material 6. The blocking material 6 allows water to flow from the vertical isobaric spaces 2C and 2D into the second horizontal isobaric space 3D, flow through the second horizontal isobaric space 3D, and be discharged to the outdoor space 15 through the communication portion 3E.

[0053] FIG. 10 is a perspective view showing the construction procedure of the curtain wall 1 of this embodiment. As shown in the figure, before constructing the curtain wall 1, at least one (here, two) horizontal member 3 is erected between the first vertical frame 40 and the second vertical frame 50 of the vertical member 2 to manufacture the frame body 7. The frame body 7 has a framed first vertical frame 40, a second vertical frame 50, and a horizontal member 3. A plurality of frame bodies 7 are installed in order on the exterior wall 11 of the building 10 to connect the plurality of frame bodies 7. At this time, the first vertical frame 40 and the second vertical frame 50 are connected and combined, and the first vertical frame 40 and the second vertical frame 50 form the vertical member 2.

[0054] The frame bodies 7 are assembled in order from the lower floors to the upper floors of the building 10. After the frame bodies 7 are installed in order in the left-right direction S while connecting the first vertical frame 40 and the second vertical frame 50, the upper frame bodies 7 are installed in order in the left-right direction S on top of the frame bodies 7 arranged below while connecting the first vertical frame 40 and the second vertical frame 50. In the frame bodies 7 arranged below, the connecting members 62 are fixed to the hollow portions 60 of the vertical members 2, and the connecting members 62 protrude upward from the hollow portions 60 of the vertical members 2. The upper frame body 7 moves downward toward the frame body 7 below, and is positioned between the left and right connecting members 62 adjacent to each other in the left-right direction S, and is then placed on top of the frame body 7 below. As a result, the upper frame body 7 fits between the left and right connecting members 62. Furthermore, the upper frame body 7 is installed in order in the left-right direction S while fitting between the left and right connecting members 62. By repeating the above steps, the frame structure of the curtain wall 1 is constructed. Furthermore, the panel 5 is fixed to the opening 4 and the curtain wall 1 is installed on the exterior wall 11 of the building 10.

[0055] In the curtain wall 1 described above, the vertical constant pressure spaces 2C, 2D formed inside the vertical grooves 2A, 2B of the vertical member 2 and the horizontal constant pressure spaces 3C, 3D formed inside the horizontal grooves 3A, 3B of the horizontal member 3 prevent water from seeping from the outdoor space 15 across the vertical members 2 and horizontal members 3 to the indoor sides of the vertical members 2 and horizontal members 3. This improves the watertightness of the vertical members 2 and horizontal members 3, thereby improving the watertightness of the curtain wall 1. Furthermore, by connecting the first connection portion 43 of the first vertical frame 40 of the vertical member 2 and the second connection portion 53 of the second vertical frame 50 at a location facing the second vertical constant pressure space 2D, water seepage between the first connection portion 43 of the first vertical frame 40 and the second connection portion 53 of the second vertical frame 50 is suppressed, thereby improving the watertightness of the vertical member 2.

[0056] The sealing material 6 prevents water from passing through the area between the second horizontal groove portion 3B of the horizontal member 3 and the vertical groove portions 2A, 2B of the vertical member 2 and flowing from the vertical equal-pressure spaces 2C, 2D above the sealing material 6 into the vertical equal-pressure spaces 2C, 2D below. In addition, the elastic deformation of the outdoor side portion 6B of the sealing material 6 allows the batten 30 of the horizontal member 3 to be smoothly attached to the interlining 20. The outdoor side portion 6B of the sealing material 6 can also be brought into close contact with the batten 30 to seal the area between the outdoor side portion 6B and the batten 30. The joining material 62 allows the vertical members 2 connected above and below to be stably joined together, and also makes it easy to join the vertical members 2 together.

[0057] The vertical mounting members 2E and 2F may be present in either or both of the vertical grooves 2A and 2B, but not necessarily in both of the vertical grooves 2A and 2B. The horizontal mounting member 22 may be present in either or both of the horizontal grooves 3A and 3B, but not necessarily in both of the horizontal grooves 3A and 3B. The sealing materials interposed between the vertical edge portions 5A and 5B of the panel 5 and the vertical grooves 2A and 2B, and the sealing materials interposed between the horizontal edge portions 5C and 5D of the panel 5 and the horizontal grooves 3A and 3B may each be a sealing material or a gasket.

[0058] The sealing material 61 sandwiched between the first connection portion 43 of the first vertical frame 40 and the second connection portion 53 of the second vertical frame 50 is not limited to sealant but may be another sealing material (e.g., sealing material). The batten 30 of the horizontal member 3 is not limited to a hollow batten containing the internal space 36 but may be a batten of another shape (e.g., a plate-shaped batten). Furthermore, the communication portion 3E of the horizontal member 3 is not limited to a communication portion containing the internal space 36 of the batten 30 but may be another communication portion, for example, a communication portion that connects the second horizontal isobaric space 3D to the outdoor space 15 through a communication hole formed in the batten 30. The panel 5 is not limited to a fixed panel but may be, for example, a movable shoji screen.

[0059] The horizontal members 3 are arranged in the vertical direction R between the left and right vertical members 2, with panels 5 sandwiched between them. The blocking member 6 may block the area between the second horizontal groove portion 3B and the vertical groove portions 2A, 2B in each of the multiple horizontal members 3 arranged in the vertical direction R, or the blocking member 6 may block the area between the second horizontal groove portion 3B and the vertical groove portions 2A, 2B in each of the multiple horizontal members 3 arranged in the vertical direction R, which are arranged every other or every several intervals. In this way, the blocking member 6 prevents water from flowing from the vertical equalizing spaces 2C, 2D above the blocking member 6 into the vertical equalizing spaces 2C, 2D below through the area between the second horizontal groove portion 3B and the vertical groove portions 2A, 2B in each of the multiple horizontal members 3 arranged in the vertical direction R, or in each of the multiple horizontal members 3 arranged in the vertical direction R, which are arranged every other or every several intervals.

[0060] When the sealing material 6 seals the area between the second horizontal groove portion 3B and the vertical groove portions 2A, 2B in each of the horizontal members 3 arranged every other or every several horizontal members 3 among the plurality of horizontal members 3 lined up in the vertical direction R, the isobaric spaces 2C, 2D, 3C, 3D around the panels 5 adjacent to each other in the vertical direction R communicate with each other through the area (gap 2K) between the second horizontal groove portion 3B and the vertical groove portions 2A, 2B that is not sealed by the sealing material 6. Furthermore, the sealing material 6 is located at the lower end of the vertical isobaric spaces 2C, 2D in the isobaric spaces 2C, 2D, 3C, 3D around the lowermost panel 5 among the isobaric spaces 2C, 2D, 3C, 3D around the plurality of panels 5 that communicate with each other, and separates the vertical isobaric spaces 2C, 2D above and below the sealing material 6. In this case, water flows within the isopressure spaces 2C, 2D, 3C, 3D around the multiple panels 5 that communicate with each other, to the isopressure space 2C, 2D, 3C, 3D around the lowest panel 5, and is then discharged from the communication part 3E into the outdoor space 15. In contrast, if the sealing material 6 seals the areas between the second horizontal groove part 3B and the vertical groove parts 2A, 2B in each of the multiple horizontal members 3 lined up in the vertical direction R, water flows within the isopressure spaces 2C, 2D, 3C, 3D around each panel 5, is discharged from the communication part 3E into the outdoor space 15, and is treated within the isopressure spaces 2C, 2D, 3C, 3D around each panel 5.

[0061] As described above, the present embodiment discloses the curtain wall described in the following items (1) to (5).

[0062] (1) A curtain wall comprising a plurality of vertical members each having a first vertical frame and a second vertical frame interlocked with each other, a plurality of horizontal members installed on adjacent vertical members, and a panel placed in an opening surrounded by the vertical members on the left and right and the horizontal members on the top and bottom, The upper and lower horizontal members have horizontal grooves that hold the horizontal edges of the panels by interposing a sealant between the horizontal members and the horizontal edges of the panels, thereby forming a horizontal equal pressure space; The left and right vertical members have vertical grooves that hold the vertical edges of the panels together with sealing material interposed between them, forming vertical equal-pressure spaces that communicate with the horizontal equal-pressure spaces. The curtain wall described in (1) can improve the watertightness of the curtain wall, which has vertical members and horizontal members that are combined with two vertical frames.

[0063] (2) In the curtain wall described in (1), The first vertical frame and the second vertical frame have a connection portion located at a position facing the vertical isobaric space, A curtain wall in which the connection portion of the first vertical frame and the connection portion of the second vertical frame are connected to each other with a sealing material sandwiched therebetween. In the curtain wall described in (2), water penetration into the area between the connection of the first vertical frame and the connection of the second vertical frame can be suppressed, thereby improving the water-tightness of the vertical members.

[0064] (3) In the curtain wall described in (1) or (2), A curtain wall provided with a sealing material that seals the area between the horizontal groove portion and the vertical groove portion. In the curtain wall described in (3), the sealing material can prevent water from flowing from the vertical equal-pressure space above the sealing material to the vertical equal-pressure space below through the area between the horizontal groove of the horizontal member and the vertical groove of the vertical member.

[0065] (4) In the curtain wall described in (3), The horizontal member has a mortise that holds the horizontal edge of the panel on the indoor side, and a batten that is attached to the mortise and holds the horizontal edge of the panel on the outdoor side, The sealing material is a curtain wall having an elastically deformable exterior side portion positioned between the lattice and the batten and in contact with the batten. In the curtain wall described in (4), the exterior side of the sealing material is elastically deformed, allowing the batten of the horizontal member to be attached smoothly without being visible.

[0066] (5) In the curtain wall described in any of (1) to (4), The vertical members have a hollow portion formed by the first vertical frame and the second vertical frame, and are connected vertically and joined to each other, A curtain wall provided with connecting materials located inside the hollow portion and connecting the vertical members connected vertically. In the curtain wall described in (5), the connecting material allows the vertical members connected above and below to be stably connected to each other. [Explanation of symbols]

[0067] 1···Curtain wall, 1A···Spandrel section, 1B···Vision section, 2···Vertical member, 2A···First vertical groove section, 2B···Second vertical groove section, 2C···First vertical equalizing pressure space, 2D···Second vertical equalizing pressure space, 2E···First vertical attachment member, 2F···Second vertical attachment member, 2G···First indoor side retaining section, 2H···Second indoor side retaining section, 2I···Sealing material, 2J···Sealing material, 2K···Gap, 3···Horizontal member, 3A···First horizontal groove section, 3B···Second horizontal groove section, 3C···First horizontal equalizing pressure space, 3D···Second horizontal, etc. Pressure space, 3E...communication part, 4...opening, 5...panel, 5A...vertical edge part, 5B...vertical edge part, 5C...horizontal edge part, 5D...horizontal edge part, 6...closing material, 6A...indoor side part, 6B...outdoor side part, 7...frame body, 10...building, 11...exterior wall, 12...body, 13...boundary part, 14...floor part, 15...outdoor space, 20...interceptor, 21...main body material, 22...horizontal attachment material, 23...upper roof inner retaining part, 24...lower roof inner retaining part, 25...extension part, 26... Sealing material, 27 Sealing material, 27A Backup material, 30 Push-in edge, 31 Upper outdoor-side retaining portion, 32 Lower outdoor-side retaining portion, 33 Mounting piece, 34 Sealing material, 34A Backup material, 35 Sealing material, 35A Backup material, 36 Internal space, 36A First communication hole, 36B Second communication hole, 40 First vertical frame, 41 First indoor-side retaining portion, 42 First indoor-side portion, 43 First connection portion, 44 Projecting wall portion, 45 First outdoor-side retaining portion , 46···Second outdoor side retaining part, 47···Sealing material, 47A···Back-up material, 48···Sealing material, 48A···Back-up material, 49···Sealing material, 49A···Back-up material, 50···Second vertical frame, 51···Second indoor side retaining part, 52···Second indoor side part, 53···Second connecting part, 54···Sealing material, 54A···Back-up material, 60···Hollow part, 61···Sealing material, 62···Jointing material, 63···Gasket, R···Up and down direction, S···Left and right direction, T···Indoor / outdoor direction.

Claims

1. A curtain wall comprising: a plurality of vertical members each having a first vertical frame and a second vertical frame that are combined with each other; a plurality of horizontal members that are installed between adjacent vertical members; and a panel that is placed in an opening surrounded by the left and right vertical members and the top and bottom horizontal members, The upper and lower horizontal members have horizontal grooves that hold the horizontal edges of the panels by interposing a sealant between the horizontal members and the horizontal edges of the panels, thereby forming a horizontal equal pressure space; The left and right vertical members have vertical grooves that hold the vertical edges of the panels together with sealing material interposed between them, forming vertical equal-pressure spaces that communicate with the horizontal equal-pressure spaces.

2. The curtain wall according to claim 1, The first vertical frame and the second vertical frame have a connection portion located at a position facing the vertical equal-pressure space, A curtain wall in which the connection portion of the first vertical frame and the connection portion of the second vertical frame are connected to each other with a sealing material sandwiched between them.

3. The curtain wall according to claim 1 or 2, A curtain wall provided with a sealing material that seals the area between the horizontal groove portion and the vertical groove portion.

4. The curtain wall according to claim 3, The horizontal member has a mortise that holds the horizontal edge of the panel on the indoor side, and a batten that is attached to the mortise and holds the horizontal edge of the panel on the outdoor side, The sealing material is a curtain wall having an elastically deformable exterior side portion positioned between the lattice and the batten and in contact with the batten.

5. The curtain wall according to claim 1 or 2, The vertical members have a hollow portion formed by the first vertical frame and the second vertical frame, and are connected vertically and joined to each other, A curtain wall provided with connecting materials located inside the hollow portion and connecting the vertical members connected vertically.

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