Curtain wall

Abstract

To provide a unit-type curtain wall that can reduce the width dimension of vertical joints between units while ensuring water-sealing performance.SOLUTION: Curtain wall units 10A and 10B have a first vertical frame 40 and a second vertical frame 50 that face each other in the left-right direction. The first vertical frame 40 has a first main body part 41, a first outdoor projection piece 42, and a first indoor projection piece 43, and the second vertical frame 50 has a second main body part 51, a second outdoor projection piece 52 with a rain barrier, and a second indoor projection piece 53 with a wind barrier. The ends of upper frames 20A and 20B on the side of the second vertical frame 50 have an outdoor-side upper surface covering parts 221A and 221B that cover the upper surface of the second main body part 51, and indoor-side upper surface covering parts 222A and 222B that project further from the outdoor-side upper surface covering parts 221A and 221B toward the first body part 41 and cover between the upper surfaces of the second outdoor projection piece 52 and the second indoor projection piece 53.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a curtain wall that constitutes an outer wall surface of a building.

Background Art

[0002] There is known a unit-type curtain wall in which factory-produced units are arranged vertically and horizontally and attached to a building frame, and horizontal frames and vertical frames of adjacent units are hermetically joined by concave-convex fitting (see Patent Document 1). In this curtain wall, in two units arranged side by side, of the left and right vertical frames arranged opposite to each other, one vertical frame is the receiving side (female side), and the other vertical frame is the insertion side (male side). A pair of receiving projecting fins having a tight material at the tip is formed on the receiving side vertical frame, and a pair of insertion projecting fins is formed on the insertion side vertical frame. Further, the upper frame is attached horizontally to the left and right vertical frames. In such a curtain wall, the flat cross-sectional shapes of the left and right vertical frames are formed to be substantially symmetric so that the end cross-sectional shapes at both left and right ends of the upper frame are symmetric. That is, the base end side of the insertion projecting fin is configured such that the position in the prospective direction and the protruding dimension in the left-right direction are the same as those of the receiving projecting fin, and the tip end side of the insertion projecting fin is formed in a crank shape and is configured to be disposed between the receiving projecting fins. Therefore, the tip position of the receiving projecting fin in the left-right direction of the unit, that is, the arrangement position of the tight material, is located on the receiving side vertical frame side rather than the joint center position between the left and right vertical frames.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a curtain wall, inter-story displacement followability during an earthquake or strong wind is required, and a gap needs to be secured between the tip of the fin of one vertical frame and the other vertical frame so that they do not come into contact with each other when the unit is displaced left and right. For this reason, it has been difficult to reduce the joint between the vertical frames.

[0005] An object of the present invention is to provide a unit-type curtain wall that can reduce the width dimension of the vertical joint between units while ensuring water stoppage performance.

Means for Solving the Problems

[0006] The curtain wall of the present invention is a curtain wall configured by arranging curtain wall units side by side in the left - right direction and the up - down direction. The curtain wall unit includes a frame body having an upper frame, a lower frame, a first vertical frame, and a second vertical frame. The first vertical frame of one curtain wall unit arranged on the left and right and the second vertical frame of the other curtain wall unit are arranged facing each other in the left - right direction. The first vertical frame includes a first main body portion along the prospective direction, a first outdoor protruding piece and a first indoor protruding piece protruding from the prospective surface of the first main body portion toward the second vertical frame side. The second vertical frame includes a second main body portion along the prospective direction, a second outdoor protruding piece protruding from the prospective surface of the second main body portion toward the first vertical frame side and arranged on the outdoor side of the first outdoor protruding piece, and a second indoor protruding piece protruding from the prospective surface of the second main body portion toward the first vertical frame side and arranged on the indoor side of the first indoor protruding piece. A tight material that abuts against the first outdoor protruding piece is attached to the second outdoor protruding piece, and a tight material that abuts against the second indoor protruding piece is attached to the second indoor protruding piece. The protruding dimensions of the second outdoor protruding piece and the second indoor protruding piece are set to be not less than half of the interval dimension between the first main body portion and the second main body portion. The end portion of the upper frame of the other curtain wall unit on the second vertical frame side includes an indoor - side upper - surface covering portion that covers at least the upper surfaces between the second outdoor protruding piece and the second indoor protruding piece, and an outdoor - side upper - surface covering portion provided on the outdoor side of the indoor - side upper - surface covering portion and covering the upper surface of the second main body portion. The indoor - side upper - surface covering portion protrudes more toward the first main body portion side than the outdoor - side upper - surface covering portion.

Effect of the Invention

[0007] According to the curtain wall of the present invention, the indoor - side upper - surface covering portion provided at the end portion of the upper frame of the other curtain wall unit on the second vertical frame side covers the upper surfaces between the second outdoor protruding piece and the second indoor protruding piece. Therefore, each tight material provided on the second outdoor protruding piece and the second indoor protruding piece is not exposed, and the water - stopping property can be improved. In addition, since the protruding dimensions of the second outdoor protruding piece and the second indoor protruding piece are set to dimensions that are at least half of the interval dimension between the first main body portion and the second main body portion, each sealing material can be provided at the center position in the width direction of the joint, and while securing a gap for interlayer displacement, the width dimension of the vertical joint between the units can be reduced.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the curtain wall 1 of the present embodiment constitutes the outer wall surface of a building 2 such as a building. As shown in FIGS. 2 to 4, the building 2 includes columns 3, beams 4 fixed between the columns 3, and a floor slab 5 supported by the beams 4. A suspended ceiling 6 is installed below the floor slab 5, and a floor 7 is installed above the floor slab 5. As shown in FIG. 1, the curtain wall 1 is configured by alternately arranging two types of curtain wall units 10A and 10B vertically and horizontally, and partitions the inside and outside of the building 2. In the following description, the left - right direction of the curtain wall 1 is defined as the X - axis direction, the inside - outside direction (prospective direction) of the curtain wall 1 is defined as the Y - axis direction, and the vertical direction (up - down direction) is defined as the Z - axis direction. The X, Y, and Z - axis directions are perpendicular to each other.

[0010] As shown in FIGS. 1 and 3, the curtain wall unit 10A has a frame body 11A formed by aluminum extruded profiles and having an upper frame 20A, a lower frame 30A, left and right first vertical frames 40, and second vertical frames 50, surface material holding frame members 60 respectively attached to the inner peripheral surfaces of the first vertical frame 40 and the second vertical frame 50, and a panel 70. As shown in FIGS. 1 and 4, the curtain wall unit 10B has a frame body 11B formed by aluminum extruded profiles and having an upper frame 20B, a lower frame 30B, left and right first vertical frames 40, and second vertical frames 50, surface material holding frame members 60 respectively attached to the inner peripheral surfaces of the first vertical frame 40 and the second vertical frame 50, and a panel 70. As shown in FIGS. 5 to 7, the panel 70 is composed of a multilayer glass panel. The upper and lower edge portions of the panel 70 are held by the upper frames 20A, 20B and the lower frames 30A, 30B, and the left and right edge portions of the panel 70 are held by the surface material holding frame members 60.

[0011] As shown in FIGS. 3 and 4, the outer wall surface constituted by the curtain wall 1 of the present embodiment is inclined outward as a whole as it goes upward to the upper floor. Further, the facade of the building 2 has a design in which the panel 70 is refracted in the access direction. In this embodiment, the upper frame 20A has an expected dimension that is approximately half as small as those of the first vertical frame 40 and the second vertical frame 50, and the upper frame 20B has an expected dimension that is substantially equivalent to those of the vertical frames 40 and 50. Also, the lower frame 30A has an expected dimension that is substantially equivalent to those of the vertical frames 40 and 50, and the lower frame 30B has an expected dimension that is approximately half of those of the vertical frames 40 and 50. Therefore, as shown in FIG. 3, in the curtain wall unit 10A, the expected dimension of the lower frame 30A is larger than the expected dimension of the upper frame 20A, and the inclination angle of the panel 70 with respect to the vertical direction is made smaller than the inclination angles of the outdoor surfaces of the first vertical frame 40 and the second vertical frame 50. Also, as shown in FIG. 4, in the curtain wall unit 10B, the expected dimension of the lower frame 30B is smaller than the expected dimension of the upper frame 20B, and the inclination angle of the panel 70 with respect to the vertical direction is made larger than the inclination angles of the outdoor surfaces of the first vertical frame 40 and the second vertical frame 50. Therefore, as shown in the plan sectional view of FIG. 2, in the left - right direction, the upper - end side of the panel 70 of the curtain wall unit 10A is located more indoors than the upper - end side of the panel 70 of the curtain wall unit 10B. On the other hand, the lower - end side of the panel 70 of the curtain wall unit 10A is located more outdoors than the lower - end side of the panel 70 of the curtain wall unit 10B. Therefore, the facade of the building 2 has a design in which the panels 70 are not arranged on the same plane in the vertical and horizontal directions and are refracted in the access direction, that is, the expected direction. Note that the fixing structure of the curtain wall units 10A and 10B to the building structure is a general fixing structure in which the upper - end sides of the vertical frames 40 and 50 are fixed to the beam 4 via fasteners 8, brackets 9, etc., and thus the description thereof is omitted.

[0012] [Upper Frame] Next, the upper frames 20A and 20B of the curtain wall units 10A and 10B will be described with reference to FIGS. 5 and 6. As shown in Fig. 5, the upper frame 20A of the curtain wall unit 10A includes an upper frame main body portion 21A, an outdoor protrusion 22A and an indoor protrusion 23A protruding from the upper frame main body portion 21A, an extension piece 24A extending outward from the upper frame main body portion 21A to the outdoor side, and a panel holding piece 25A extending downward from the outdoor side end portion of the extension piece 24A. The upper frame main body portion 21A is formed in a hollow shape by an upper surface 211A, a lower surface 212A, an outdoor surface 213A, and an indoor surface 214A. A stepped portion is formed on the indoor side of the lower surface 212A, and a fireproof board 80 is held on this stepped portion by a metal fitting 81 having an L-shaped cross section screwed to the upper frame main body portion 21A. A plurality of screw holes are formed in the hollow portion of the upper frame main body portion 21A. The left and right end surfaces of these screw holes are abutted against the side surfaces of the first vertical frame 40 and the second vertical frame 50, and the upper frame 20A is connected to the first vertical frame 40 and the second vertical frame 50 by screws screwed into the screw holes from the first vertical frame 40 and the second vertical frame 50. Glazing gaskets 216 and 217 are fixed to the outdoor surface 213A and the panel holding piece 25A, respectively, and a panel 70 which is a multilayer glass is held between these glazing gaskets 216 and 217. Note that the outdoor surface 213A and the panel holding piece 25A are inclined with respect to the vertical direction in accordance with the inclination angle of the panel 70 disposed in the curtain wall unit 10A.

[0013] A rain barrier 26 which is a tight material is attached to the indoor surface at the upper end of the outdoor protrusion 22A, and a wind barrier 27 which is a tight material is attached to the outdoor surface at the upper end of the indoor protrusion 23A. In addition, an end member 28 is attached to the groove portion partitioned by the upper surface 211A, the outdoor protrusion 22A, and the indoor protrusion 23A. The end member 28 is a short aluminum extrusion profile having a substantially U-shaped cross section, and is disposed one by one at both left and right end portions of the groove portion, and is screwed to the upper surface 211A.

[0014] As shown in Fig. 6, the upper frame 20B of the curtain wall unit 10B includes an upper frame main body 21B, an outdoor protrusion 22B and an indoor protrusion 23B protruding from the upper frame main body 21B, an extension piece 24B extending outward from the upper frame main body 21B to the outdoor side, and a panel holding piece 25B extending downward from the outdoor side end of the extension piece 24B. The upper frame main body 21B is shaped to have three hollow portions by an upper surface 211B, a lower surface 212B, an outdoor surface 213B, an indoor surface 214B, and two partition pieces 215B. A stepped portion is formed on the indoor side of the lower surface 212B, and the fireproof board 80 is held by the fitting 81, similar to the upper frame 20B. A plurality of screw holes are formed in the hollow portions of the upper frame main body 21B. The left and right end faces of these screw holes are abutted against the side surfaces of the first vertical frame 40 and the second vertical frame 50, and the upper frame 20B is connected to the first vertical frame 40 and the second vertical frame 50 by screws screwed into the screw holes from the first vertical frame 40 and the second vertical frame 50. Glazing gaskets 216 and 217 for holding the panel 70 are attached to the outdoor surface 213B and the panel holding piece 25B. Note that the outdoor surface 213B and the panel holding piece 25B are inclined with respect to the vertical direction in accordance with the inclination angle of the panel 70 disposed in the curtain wall unit 10B.

[0015] A rain barrier 26 and a wind barrier 27 are attached to the outdoor protrusion 22B and the indoor protrusion 23B. In addition, end members 28 are attached to both left and right ends of the groove portion defined by the upper surface 211B, the outdoor protrusion 22B, and the indoor protrusion 23B.

[0016] [Lower frame] Next, the lower frames 30A and 30B of the curtain wall units 10A and 10B will be described with reference to Figs. 5 and 6. As shown in Fig. 6, the lower frame 30A includes a lower frame main body 31A, a pressing edge 32, and a ventilation device 35. The lower frame main body 31A is formed with a plurality of hollow portions, and is fixed to the side surfaces of the first vertical frame 40 and the second vertical frame 50 by screwing screws from the first vertical frame 40 and the second vertical frame 50 into the screw holes formed in these hollow portions. Further, the lower frame body 31A includes a hollow insertion portion 311A that is inserted between the outdoor protrusion 22B and the indoor protrusion 23B of the upper frame 20B. The insertion portion 311A has an abutment surface against which the rain barrier 26 and the wind barrier 27 abut, thereby ensuring the water tightness between the lower frame 30A and the upper frame 20B.

[0017] The pressing edge 32 is detachably attached to the outdoor side end of the lower frame body 31A. A glazing gasket 217 is attached to the pressing edge 32, and an internal spacer 218 is attached to the outdoor surface of the lower frame body 31A. The panel 70 is held by the glazing gasket 216 and the internal spacer 218. Further, a sealing material 219 is filled on the upper surface side of the internal spacer 218 to seal the space between the panel 70 and the lower frame body 31A.

[0018] The ventilation device 35 includes a ventilation lid 351 that is openably and closably attached to the lower frame body 31A. Openings 352 and 353 for ventilation are formed in the lower frame 30A. When the ventilation lid 351 is opened, outside air can be introduced into the indoor side through the path 355 shown in FIG. 6. When the ventilation lid 351 is closed, the path 355 is blocked, and the introduction of outside air can be blocked.

[0019] As shown in FIG. 5, the lower frame 30B includes a lower frame body 31B and a pressing edge 32. Since the lower frame 30B has a smaller expected dimension than the lower frame 30A, the ventilation device is not provided. The lower frame body 31B is formed with two hollow portions, and is fixed to the side surfaces of the first vertical frame 40 and the second vertical frame 50 by screwing screws from the first vertical frame 40 and the second vertical frame 50 into screw holes formed in the hollow portions. Further, the lower frame body 31B includes a hollow insertion portion 311B that is inserted between the outdoor protrusion 22A and the indoor protrusion 23A of the upper frame 20A. The insertion portion 311B abuts against the rain barrier 26 and the wind barrier 27, thereby ensuring the water tightness between the lower frame 30B and the upper frame 20A.

[0020] The pressing edge 32 is detachably attached to the outdoor side end of the lower frame body 31B. A glazing gasket 217 is attached to the pressing edge 32, and an internal spacer 218 is attached to the outdoor surface of the lower frame body 31B. The panel 70 is held by the glazing gasket 217 and the internal spacer 218. Further, a sealing material 219 is filled on the upper surface side of the internal spacer 218 to seal the space between the panel 70 and the lower frame body 31B.

[0021] [First vertical frame] As shown in FIGS. 7 and 8, the first vertical frame 40 has the same configuration in the curtain wall units 10A and 10B, and includes a first main body portion 41 along the prospective direction, a first outdoor protruding piece 42 and a first indoor protruding piece 43 protruding from the outer peripheral surface 411 of the first main body portion 41 toward the second vertical frame 50 side. The first main body portion 41 is composed of a plate-like member linearly formed along the prospective direction (Y-axis direction), and the inner peripheral surface 412 of the first main body portion 41 is a flat plane. Note that the outer peripheral surface 411 and the inner peripheral surface 412 are surfaces along the prospective direction of the first main body portion 41. The outer peripheral surface 411 is a surface along the joint with the other curtain wall units 10A and 10B arranged in the left-right direction, and the inner peripheral surface 412 is the inner side of the frame bodies 11A and 11B, that is, the surface on the side where the panel 70 is arranged. The same applies to the second vertical frame 50. Outdoor protruding pieces 44 and indoor protruding pieces 45 protruding toward the second vertical frame 50 side are formed at the outdoor end and the indoor end of the outer peripheral surface 411 of the first vertical frame 40, and joint holding pieces 46 and 47 are formed on the indoor side of the outdoor protruding piece 44.

[0022] [Second vertical frame] As shown in FIG. 7, the second vertical frame 50 has the same configuration in the curtain wall units 10A and 10B, and includes a second main body portion 51 along the prospective direction, a second outdoor protruding piece 52 and a second indoor protruding piece 53 protruding from the outer peripheral surface 511 of the second main body portion 51 toward the first vertical frame 40 side. The second main body portion 51 is composed of a plate-like member linearly formed along the prospective direction (Y-axis direction), and the inner peripheral surface 512 of the second main body portion 51 is a flat plane. On the outdoor end and indoor end of the outer peripheral surface 511 of the second vertical frame 50, an outdoor projecting piece 54 and an indoor projecting piece 55 that project toward the first vertical frame 40 side are formed, and joint holding pieces 56 and 57 are formed on the indoor side of the outdoor projecting piece 54.

[0023] A rain barrier 521, which is a tight material, is attached to the indoor side of the tip of the second outdoor projecting piece 52, and a wind barrier 531, which is a tight material, is attached to the outdoor side of the tip of the second indoor projecting piece 53. In this embodiment, the projecting dimension L1 in the X-axis direction of the second outdoor projecting piece 52 and the second indoor projecting piece 53 is set to be half or more of the dimension between the first main body part 41 and the second main body part 51, that is, the joint width dimension L (dimension in the X-axis direction) between the first vertical frame 40 and the second vertical frame 50. Specifically, the projecting dimensions of the second outdoor projecting piece 52 and the second indoor projecting piece 53 are set such that the positions of the rain barrier 521 and the wind barrier 531 in the left-right direction (X-axis direction) are on the center line CL of the joint. The first outdoor projecting piece 42 and the first indoor projecting piece 43 of the first vertical frame 40 are formed linearly along the X-axis direction in plan view, and the projecting dimension L2 is made longer than L / 2 and, in this embodiment, longer than L1. For this reason, L > L2 > L1 > L / 2. The first outdoor projecting piece 42 and the first indoor projecting piece 43 are inserted between the second outdoor projecting piece 52 and the second indoor projecting piece 53 and are in contact with the rain barrier 521 and the wind barrier 531. Thereby, the curtain wall 1 is a curtain wall of an open joint method having a space with the same pressure as the external air pressure between the rain barrier 521 and the wind barrier 531.

[0024] In the joint portion between the first vertical frame 40 and the second vertical frame 50, the space between the outdoor projecting pieces 44 and 54 and the joint holding pieces 46 and 56 is used as a rail portion for guiding the gondola guide. Also, a joint material for joining the curtain wall units 10A and 10B is attached between the joint holding pieces 46, 47, 56, and 57.

[0025] As shown in FIGS. 5 and 8, the extension piece 24A of the upper frame 20A is positioned lower in height than the upper surface 211A of the upper frame 20A and is also positioned lower in height with respect to the upper surface 211B of the upper frame 20B. For this reason, as also shown in FIG. 8, the upper end surfaces of the second vertical frame 50 and the first vertical frame 40 to which the upper frame 20A is attached are lowered by one step at the positions corresponding to the extension piece 24A.

[0026] [Face material holding frame material] Face material holding frame materials 60 for holding the left and right edge portions of the panel 70 are fixed to the inner peripheral surfaces 412 and 512 of the first vertical frame 40 and the second vertical frame 50. In the curtain wall unit 10A, as shown in FIG. 3, the face material holding frame material 60 is inclined so that the upper end side is on the outdoor side rather than the lower end side in order to hold the left and right edge portions of the panel 70 held between the upper frame 20A and the lower frame 30A. Specifically, the position in the Y-axis direction of the upper end side of the face material holding frame material 60 corresponds to the panel holding piece 25A and the outdoor surface 213A of the upper frame 20A as shown in FIG. 5. The position in the Y-axis direction of the lower end side of the face material holding frame material 60 corresponds to the outdoor surface of the lower frame main body 31A and the pressing edge 32 as shown in FIG. 6. In the curtain wall unit 10B, as shown in FIG. 4, the face material holding frame material 60 is inclined so that the upper end side is on the indoor side rather than the lower end side in order to hold the left and right edge portions of the panel 70 held between the upper frame 20B and the lower frame 30B. Specifically, the position in the Y-axis direction of the upper end side of the face material holding frame material 60 corresponds to the panel holding piece 25B and the outdoor surface 213B of the upper frame 20B as shown in FIG. 6. The position in the Y-axis direction of the lower end side of the face material holding frame material 60 corresponds to the outdoor surface of the lower frame main body 31B and the pressing edge 32 as shown in FIG. 5.

[0027] As shown in Fig. 7, the facing material holding frame member 60 includes a frame body 61 and a pressing edge 62. Note that Fig. 7 is a plan sectional view of a position near the upper end portions of the curtain wall units 10A and 10B. Therefore, in the curtain wall unit 10A, the facing material holding frame member 60 and the panel 70 are arranged at an intermediate position in the prospective direction of the first main body portion 41 and the second main body portion 51, specifically, at a position near the first outdoor projecting piece 42 and the second outdoor projecting piece 52. Further, in the curtain wall unit 10B, the facing material holding frame member 60 and the panel 70 are arranged on the tip end side of the first main body portion 41 and the second main body portion 51. In this regard, it is different from Fig. 2 which is a plan sectional view of a position near the lower end portions of the curtain wall units 10A and 10B. The frame body 61 is a long member having a substantially L-shaped cross section, which includes a fixing piece 611 fixed to the first main body portion 41 and the second main body portion 51 with hexagon bolts and screws, and a hollow holding piece portion 612 formed continuously on the indoor side of the fixing piece 611. The pressing edge 62 is a long member having a substantially L-shaped cross section detachably attached to the fixing piece 611. A glazing gasket 63 is attached to the pressing edge 62, and an internal spacer 64 is attached to the holding piece portion 612. The panel 70 is held between the glazing gasket 63 and the internal spacer 64. Further, a sealing material 65 is filled inside the internal spacer 64.

[0028] [Fitting of the joint portion of the upper frame and the vertical frame] The upper frames 20A and 20B are fixed to the upper end portions of the inner peripheral surfaces 412 and 512 of the first vertical frame 40 and the second vertical frame 50, and the left and right ends of the upper surfaces 211A and 211B and the extending pieces 24A and 24B of the upper frames 20A and 20B are extended so as to cover the upper ends of the first vertical frame 40 and the second vertical frame 50. That is, as shown in Fig. 9, the end portions of the upper frames 20A and 20B on the second vertical frame 50 side are arranged outside the second outdoor projecting piece 52 and include outdoor side upper surface covering portions 221A and 221B that cover the upper surface of the second main body portion 51, and indoor side upper surface covering portions 222A and 222B that cover between the upper surfaces of the second outdoor projecting piece 52 and the second indoor projecting piece 53. Therefore, the indoor side upper surface covering portions 222A and 222B are formed to project toward the first main body portion 41 side more than the outdoor side upper surface covering portions 221A and 221B. Therefore, the indoor-side upper surface covering portions 222A and 222B cover at least the upper surfaces between the second outdoor protruding piece 52 and the second indoor protruding piece 53, and the outdoor-side upper surface covering portions 221A and 221B are provided on the outdoor sides of the indoor-side upper surface covering portions 222A and 222B to cover the upper surface of the second main body portion 51. And the indoor-side upper surface covering portions 222A and 222B protrude toward the first main body portion 41 side more than the outdoor-side upper surface covering portions 221A and 221B. In the upper frames 20A and 20B, the protruding dimensions (dimensions in the X-axis direction) of the indoor-side upper surface covering portions 222A and 222B are the same as the expected dimensions (dimensions in the Y-axis direction), but the expected dimensions of the outdoor-side upper surface covering portions 221A and 221B are different because they correspond to the expected dimensions of the upper frames 20A and 20B. That is, the outdoor-side upper surface covering portion 221B is provided up to a position near the outdoor-side end of the second vertical frame 50. On the other hand, the outdoor-side upper surface covering portion 221A is provided up to an intermediate position in the expected direction of the second vertical frame 50. For this reason, on the outdoor side of the outdoor-side upper surface covering portion 221A, the upper surface of the second main body portion 51 is exposed.

[0029] The ends of the upper frames 20A and 20B on the side of the first vertical frame 40 are provided at positions facing the outdoor-side upper surface covering portions 221A and 221B and include outdoor-side upper surface covering portions 231A and 231B that cover the upper surface of the first main body portion 41 of the first vertical frame 40, and indoor-side upper surface covering portions 232A and 232B that are provided at positions facing the indoor-side upper surface covering portions 222A and 222B and cover the upper surface of the first main body portion 41. In this embodiment, the indoor-side upper surface covering portions 232A and 232B protrude slightly toward the indoor-side upper surface covering portions 222A and 222B side more than the outdoor-side upper surface covering portions 231A and 231B, and cover the base end portions of the first outdoor protruding piece 42 and the first indoor protruding piece 43. The protruding dimensions and the expected dimensions of the indoor-side upper surface covering portions 232A and 232B are the same as each other, and the expected dimension is also the same as that of the indoor-side upper surface covering portions 222A and 222B. Further, the outdoor upper surface covering portion 231B is provided up to a position near the outdoor-side end of the first vertical frame 40, similar to the outdoor upper surface covering portion 221B. On the other hand, the outdoor upper surface covering portion 231A is provided up to an intermediate position in the prospective direction of the first vertical frame 40, and the upper surface of the first main body portion 41 is exposed outside the outdoor upper surface covering portion 231A.

[0030] As described above, the upper frames 20A and 20B are screwed to the sides of the first vertical frame 40 and the second vertical frame 50 in contact therewith, except for the upper surfaces 211A, 211B and the extension pieces 24A, 24B. However, the left and right ends of the upper surfaces 211A, 211B and the extension pieces 24A, 24B, that is, the outdoor upper surface covering portions 221A, 221B, 231A, 231B and the indoor upper surface covering portions 222A, 222B, 232A, 232B extend to cover the upper surfaces of the first vertical frame 40 and the second vertical frame 50. Also, the edges of the outdoor upper surface covering portions 221A, 221B, 231A, 231B are aligned with the outer peripheral surfaces 411, 511 of the first main body portion 41 and the second main body portion 51, and are provided at equal distances from the center line CL in the left-right direction (X-axis direction) of the joint between the first vertical frame 40 and the second vertical frame 50.

[0031] [Catch pan] At the joint portion between the first vertical frame 40 and the second vertical frame 50, as shown in Fig. 10, a catch pan for closing the joint is arranged. The catch pan is composed of a silicon sponge or the like, and includes a catch pan 91 arranged at the end portions on the side of the first vertical frame 40 of the outdoor protrusions 22A and 22B and the indoor protrusions 23A and 23B of the upper frames 20A and 20B, a catch pan 92 arranged at the end portions on the side of the second vertical frame 50 of the outdoor protrusions 22A and 22B and the indoor protrusions 23A and 23B, a catch pan 93 arranged on the outdoor side of the catch pan 91, and a catch pan 94 arranged on the outdoor side of the catch pan 92. By these catch pans 91 to 94, the joints between the upper end portions of the first vertical frame 40 and the second vertical frame 50 and between the ends of the outdoor protrusions 22A and 22B and the indoor protrusions 23A and 23B of the upper frames 20A and 20B are closed. Thereby, the rain barriers 521 and the wind barriers 531 provided on the first vertical frame 40 and the second vertical frame 50 and the rain barriers 26 and the wind barriers 27 provided on the upper frames 20A and 20B constitute a tight line continuous via the catch pans 91 and 92. Note that on the outdoor sides of the catch pans 93 and 94, a joint sleeve 95 for connecting the upper and lower curtain wall units 10A and 10B is arranged between the joint holding pieces 46, 47, 56, and 57.

[0032] [Effects of the Embodiment] According to the present embodiment, since the indoor side upper surface covering portions 222A and 222B for covering between the upper surfaces of the second outdoor protruding piece 52 and the second indoor protruding piece 53 of the second vertical frame 50 are provided on the upper frames 20A and 20B of the respective curtain wall units 10A and 10B, the upper end surfaces of the rain barrier 521 and the wind barrier 531 attached to the second outdoor protruding piece 52 and the second indoor protruding piece 53 are covered by the indoor side upper surface covering portions 222A and 222B and are not exposed to the outside, so that the water stop performance and the appearance design can be improved. Furthermore, since the protruding dimensions L1 of the second outdoor protruding piece 52 and the second indoor protruding piece 53 are set to be half or more of the spacing dimension L between the first main body portion 41 and the second main body portion 51, that is, L1 > L / 2, the rain barrier 521 and the wind barrier 531 can be arranged on the center line of the joint between the first main body portion 41 and the second main body portion 51. Therefore, compared with the conventional structure in which the rain barrier 521 and the wind barrier 531 are provided at positions on the second main body portion 51 side with respect to the center line of the joint, the dimension between the first main body portion 41 and the second main body portion 51, that is, the width dimension L of the joint, can be reduced. Furthermore, since the first main body portion 41 and the second main body portion 51 are formed in a flat plate shape along the prospective direction, the finding dimension of the connecting portion of the left and right curtain wall units 10A and 10B can be reduced. Therefore, in the open joint type curtain wall, a vertical joint with a small finding dimension can be realized, and the appearance design property can be improved.

[0033] The upper frames 20A and 20B include outdoor protrusions 22A and 22B and indoor protrusions 23A and 23B that protrude from the upper surfaces of the upper frame main body portions 21A and 21B and to which a rain barrier 26 and a wind barrier 27 are attached. Since the edge positions of the outdoor protrusions 22A and 22B and the indoor protrusion 23A on the side of the second vertical frame 50 are made to coincide with the edge positions of the indoor side upper surface covering portions 222A and 222B, by providing catch pans 91 and 92, the rain barriers 521 and 26 and the wind barriers 531 and 27 of the vertical frames 40 and 50 and the upper frames 20A and 20B can be made continuous respectively, and water tightness can be ensured with a simple structure.

[0034] Since the dimension from the center line CL in the left - right direction of the joint between the first vertical frame 40 and the second vertical frame 50 to the end face of the outdoor side upper surface covering portions 221A and 221B is the same as the dimension from the center line CL to the outdoor side upper surface covering portions 231A and 231B, the appearance design property of the vertical joint can be improved.

[0035] Since a face material holding frame member 60 separate from the first main body portion 41 and the second main body portion 51 is provided, the position and the arrangement angle of the face material holding frame member 60 with respect to the first vertical frame 40 and the second vertical frame 50 can be freely set. Thereby, the entry / exit position and the inclination angle of the panel 70 can be freely set, and various designs can be realized.

[0036] Since the first main body portion 41 and the second main body portion 51 are configured by plate-like members linearly formed along the prospective direction, the finding dimensions of the first vertical frame 40 and the second vertical frame 50 can be reduced, the connecting portion of the left and right vertical frames 40, 50 can be made slender in appearance, and the exterior design property can be improved.

[0037] [Modification Example] The present invention is not limited to the configuration of the above-described embodiment. For example, as a curtain wall unit, as shown in FIG. 11, a face material holding frame member 60 is attached to the outdoor side end portions of the first vertical frame 40C and the second vertical frame 50C, and a panel 70 held by the upper frame 20C, the face material holding frame member 60, and a lower frame (not shown) may be used, which is arranged along the vertical plane and has the same prospective position. Also, as in the upper frame 20C shown in FIG. 11, the end portion on the second vertical frame 50C side is configured such that the indoor side upper surface covering portion 222C protrudes toward the first vertical frame 40 side more than the outdoor side upper surface covering portion 221C, and the end portion on the first vertical frame 40C side is configured such that the indoor side upper surface covering portion 232C facing the indoor side upper surface covering portion 222C protrudes toward the second vertical frame 50C side more than the outdoor side upper surface covering portion 231C facing the outdoor side upper surface covering portion 221C. Thereby, the width dimension of the joint portion between the indoor side upper surface covering portions 222C and 232C can be made smaller than the width dimension of the joint portion between the outdoor side upper surface covering portion 221C covering the upper surface of the second main body portion 51C of the second vertical frame 50C and the outdoor side upper surface covering portion 231C covering the upper surface of the first main body portion 41C of the first vertical frame 40C, and the exterior design property and the water-stopping property can be improved.

[0038] In the above-described embodiment, the edges of the upper frames 20A and 20B on the first vertical frame 40 side are such that the indoor side upper surface covering portions 232A and 232B protrude slightly more than the outdoor side upper surface covering portions 231A and 231B. However, the edges of the upper frames 20A and 20B on the first vertical frame 40 side may be configured by cutting the edges linearly along the prospective direction. In the above-described embodiment, the indoor-side upper surface covering portions 222A and 222B are provided on the indoor side from the second outdoor protruding piece 52, but the present invention is not limited to this. For example, the indoor-side edge of the indoor-side upper surface covering portions 222A and 222B may be extended to the outdoor side beyond the second outdoor protruding piece 52.

[0039] Furthermore, the curtain wall unit is not limited to one including the face material holding frame member 60 separate from the first vertical frame 40 and the second vertical frame 50, and the face material holding portion may be integrally formed on the first vertical frame 40 and the second vertical frame 50.

[0040] [Summary of the present invention] The present invention relates to a curtain wall formed by arranging curtain wall units side by side in the left - right direction and the up - down direction. The curtain wall unit includes a frame body having an upper frame, a lower frame, a first vertical frame, and a second vertical frame. The first vertical frame of one of the two curtain wall units arranged left and right and the second vertical frame of the other curtain wall unit are arranged to face each other in the left - right direction. The first vertical frame includes a first main body portion along the prospective direction, a first outdoor protruding piece and a first indoor protruding piece protruding from the prospective surface of the first main body portion toward the second vertical frame side. The second vertical frame includes a second main body portion along the prospective direction, a second outdoor protruding piece protruding from the prospective surface of the second main body portion toward the first vertical frame side and arranged outside the outdoor side of the first outdoor protruding piece, and a second indoor protruding piece protruding from the prospective surface of the second main body portion toward the first vertical frame side and arranged inside the indoor side of the first indoor protruding piece. A tight material that abuts against the first outdoor protruding piece is attached to the second outdoor protruding piece, and a tight material that abuts against the second indoor protruding piece is attached to the second indoor protruding piece. The protruding dimensions of the second outdoor protruding piece and the second indoor protruding piece are set to be equal to or more than half of the interval dimension between the first main body portion and the second main body portion. The end portion of the upper frame of the other curtain wall unit on the second vertical frame side includes an indoor - side upper - surface covering portion that covers at least the upper surfaces between the second outdoor protruding piece and the second indoor protruding piece, and an outdoor - side upper - surface covering portion provided outside the indoor - side upper - surface covering portion and covering the upper surface of the second main body portion. The indoor - side upper - surface covering portion protrudes more toward the first main body portion side than the outdoor - side upper - surface covering portion. According to the present embodiment, since the indoor - side upper - surface covering portion that covers the upper surfaces between the second outdoor protruding piece and the second indoor protruding piece of the second vertical frame is provided on the upper frame of each curtain wall unit, the upper end surfaces of the respective tight materials attached to the second outdoor protruding piece and the second indoor protruding piece are covered by the indoor - side upper - surface covering portion and are not exposed to the outside, so that the water - stop performance and the appearance design can be improved. Furthermore, since the protruding dimensions of the second outdoor protruding piece and the second indoor protruding piece are set to be half or more of the spacing dimension between the first main body part and the second main body part, each tight material can be arranged on the center line of the joint between the first main body part and the second main body part. For this reason, compared with the conventional structure in which each tight material is provided at a position on the second main body part side with respect to the center line of the joint, the dimension between the first main body part and the second main body part, that is, the width dimension of the joint, can be reduced. Furthermore, since the first main body part and the second main body part can be formed in a flat plate shape along the prospective direction, the finding dimension of the connecting part of the left and right curtain wall units can be reduced. Therefore, a vertical joint with a small finding dimension can be realized in the open joint type curtain wall.

[0041] In the curtain wall of the present invention, the upper frame of the other curtain wall unit includes an upper frame main body part, an outdoor ridge and an indoor ridge protruding from the upper surface of the upper frame main body part, and tight materials that abut against the lower frame of another curtain wall unit arranged above the upper frame are respectively attached to the outdoor ridge and the indoor ridge. It is preferable that the edge positions on the second vertical frame side of the outdoor ridge and the indoor ridge coincide with the edge positions of the indoor side upper surface covering part. The upper frame protrudes from the upper surface of the upper frame main body part and includes an outdoor ridge and an indoor ridge to which tight materials are attached. Since the edge positions on the second vertical frame side of the outdoor ridge and the indoor ridge are made to coincide with the edge positions of the indoor side upper surface covering part, by providing a catch pan, the tight materials of the vertical frame and the upper frame can be made continuous respectively, and water tightness can be ensured with a simple structure.

[0042] In the curtain wall of the present invention, the end part on the first vertical frame side of the upper frame of one curtain wall unit includes an outdoor side upper surface covering part facing the end surface of the outdoor side upper surface covering part and an indoor side upper surface covering part facing the end surface of the indoor side upper surface covering part. It is preferable that the dimensions from the center axis in the left - right direction of the joint between the first vertical frame and the second vertical frame to the end surfaces of the respective outdoor side upper surface covering parts are the same. According to such a configuration, since the dimensions from the center line in the left-right direction of the joint between the first vertical frame and the second vertical frame to the end face of each outdoor side upper covering portion are the same, the appearance design property of the vertical joint can be improved.

[0043] In the curtain wall of the present invention, it is preferable that face material holding frame members for holding the left and right edge portions of the face material held in the frame body are fixed to the first main body portion and the second main body portion. Since a face material holding frame member separate from the first main body portion and the second main body portion is provided, the position and arrangement angle of the face material holding frame member with respect to the first vertical frame and the second vertical frame can be freely set, so that the insertion and extraction position and inclination angle of the face material can be freely set, and various designs can be realized.

[0044] In the curtain wall of the present invention, it is preferable that the first main body portion and the second main body portion are constituted by plate-like members linearly formed along the prospective direction, and the inner peripheral surface of the plate-like member is a flat plane. Since the first main body portion and the second main body portion are constituted by plate-like members linearly formed along the prospective direction, the finding dimensions of the first vertical frame and the second vertical frame can be reduced, the connecting portion of the left and right vertical frames can be made to have a slim finding, and the appearance design property can be improved.

Explanation of reference numerals

[0045] 1…Curtain wall, 10A…Curtain wall unit, 10B…Curtain wall unit, 10C…Curtain wall unit, 11A…Frame body, 11B…Frame body, 20A…Upper frame, 20B…Upper frame, 20C…Upper frame, 21A…Upper frame main body part, 21B…Upper frame main body part, 22A…Outdoor protrusion, 22B…Outdoor protrusion, 23A…Indoor protrusion, 23B…Indoor protrusion, 26…Rain barrier, 27…Wind barrier, 30A…Lower frame, 30B…Lower frame, 40…First vertical frame, 40C…First vertical frame, 41…First main body part, 41C…First main body part, 42…First outdoor protruding piece, 43…First indoor protruding piece, 50…Second vertical frame, 50C…Second vertical frame, 51…Second main body part, 51C…Second main body part, 52…Second outdoor protruding piece, 53…Second indoor protruding piece, 60…Face material holding frame material, 61…Frame main body, 62…Pressing edge, 70…Panel, 91…Catch pan, 92…Catch pan, 93…Catch pan, 94…Catch pan, 221A…Outdoor side upper covering part, 221B…Outdoor side upper covering part, 221C…Outdoor side upper covering part, 222A…Indoor side upper covering part, 222B…Indoor side upper covering part, 222C…Indoor side upper covering part, 231A…Outdoor side upper covering part, 231B…Outdoor side upper covering part, 231C…Outdoor side upper covering part, 232A…Indoor side upper covering part, 232B…Indoor side upper covering part, 232C…Indoor side upper covering part, 411…Outer peripheral surface, 412…Inner peripheral surface, 511…Outer peripheral surface, 512…Inner peripheral surface, 521…Rain barrier, 531…Wind barrier.

Claims

1. A curtain wall configured by arranging curtain wall units side by side in the left - right direction and the up - down direction, wherein the curtain wall unit includes a frame body having an upper frame, a lower frame, a first vertical frame, and a second vertical frame, the first vertical frame of one curtain wall unit among two curtain wall units arranged left and right and the second vertical frame of the other curtain wall unit are arranged opposite to each other in the left - right direction, the first vertical frame includes a first main body portion along the prospective direction, a first outdoor protruding piece and a first indoor protruding piece protruding from the prospective surface of the first main body portion toward the second vertical frame side, the second vertical frame includes a second main body portion along the prospective direction, a second outdoor protruding piece protruding from the prospective surface of the second main body portion toward the first vertical frame side and arranged outside the outdoor side of the first outdoor protruding piece, and a second indoor protruding piece protruding from the prospective surface of the second main body portion toward the first vertical frame side and arranged inside the indoor side of the first indoor protruding piece, a tight material abutting against the first outdoor protruding piece is attached to the second outdoor protruding piece, a tight material abutting against the second indoor protruding piece is attached to the second indoor protruding piece, the protruding dimensions of the second outdoor protruding piece and the second indoor protruding piece are set to be not less than half of the interval dimension between the first main body portion and the second main body portion, the end portion of the upper frame of the other curtain wall unit on the second vertical frame side, includes at least a second indoor - side upper - surface covering portion covering between the upper surfaces of the second outdoor protruding piece and the second indoor protruding piece, and a second outdoor - side upper - surface covering portion provided outside the second indoor - side upper - surface covering portion and covering the upper surface of the second main body portion, the end portion of the upper frame of the one curtain wall unit on the first vertical frame side, includes a first outdoor - side upper - surface covering portion provided at a position facing the end surface of the second outdoor - side upper - surface covering portion and covering the upper surface of the first main body portion, and a first indoor - side upper - surface covering portion provided at a position facing the end surface of the second indoor - side upper - surface covering portion and covering the upper surface of the first main body portion, the second indoor - side upper - surface covering portion protrudes more toward the first main body portion side than the second outdoor - side upper - surface covering portion, and the joint width dimension between the first indoor - side upper - surface covering portion and the second indoor - side upper - surface covering portion is smaller than the joint width dimension between the first outdoor - side upper - surface covering portion and the second outdoor - side upper - surface covering portion characterized by the curtain wall.

2. In the curtain wall according to Claim 1, The upper frame of each of the curtain wall units includes an upper frame main body portion, an outdoor protruding strip and an indoor protruding strip protruding from the upper surface of the upper frame main body portion. Tightening materials that abut against the lower frames of other curtain wall units arranged above the upper frame are respectively attached to the outdoor protruding strip and the indoor protruding strip. The edge positions of the outdoor protruding strip and the indoor protruding strip on the second vertical frame side coincide with the edge positions of the second indoor side upper surface covering portion. A catch pan for closing the joint is arranged between the upper ends of the first vertical frame and the second vertical frame of each curtain wall unit. The catch pan includes a first catch pan arranged at the end of the outdoor protruding strip and the indoor protruding strip on the first vertical frame side, a second catch pan arranged at the end of the outdoor protruding strip and the indoor protruding strip on the second vertical frame side, a third catch pan arranged outside the outdoor side of the first catch pan, and a fourth catch pan arranged outside the outdoor side of the second catch pan. The tightening materials attached to the second outdoor protruding piece and the second indoor protruding piece and the tightening materials attached to the outdoor protruding strip and the indoor protruding strip constitute a continuous tight line via the first catch pan and the second catch pan. A curtain wall characterized by the above.

3. In the curtain wall according to claim 1 or claim 2, the dimensions from the central axis in the left-right direction of the joint between the first vertical frame and the second vertical frame to the end faces of the first outdoor side upper surface covering portion and the second outdoor side upper surface covering portion are the same. A curtain wall characterized by the above.

4. In the curtain wall according to any one of claims 1 to 3, facing material holding frame members for holding the left and right edges of the facing material held in the frame body are fixed to the first main body portion and the second main body portion. A curtain wall characterized by the above.

5. In the curtain wall according to claim 4, the first main body portion and the second main body portion are composed of plate-like members formed linearly along the prospective direction, and the inner peripheral surface of the plate-like member is a flat plane. A curtain wall characterized by the above.

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