JP2024002597A - curtain wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of components of a curtain wall.

SOLUTION: In a curtain wall 1, a vertical frame 33 includes an outdoor side aspect wall 43, a first vertical frame seal part 45 arranged in an indoor side aspect wall 41, and a second vertical frame seal part 437 arranged at an outdoor side position of an inner wall surface 22a of a panel 22 in the outdoor side aspect wall 43. An outdoor side airtight line of a vertical equal-pressure space 28 between the first vertical frame seal part 45 and the second vertical frame seal part 437 is set to be the outdoor side of the inner wall surface 22a. An upper horizontal frame 5 includes an indoor side support plate 51 and an outdoor side support plate 53. A lower horizontal frame 6 includes an indoor side support plate 61, an outdoor side vertical wall 62, and an outdoor side support plate 63, and includes a first horizontal frame seal part 55 arranged in the indoor side support plate 51 and a second horizontal seal part 537 arranged at the outdoor side position of the inner wall surface 22a of the panel in the outdoor side support plate 53. The outdoor side airtight line of a horizontal equal-pressure space 29 between the first horizontal frame seal part 55 and the second horizontal seal part 537 is set to be the outdoor side of the inner wall surface 22a.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2024,JPO&INPIT

Description

Embodiments of the present invention relate to a curtain wall that is watertight.

Watertight curtain walls are used in buildings such as skyscrapers (for example, see Patent Document 1). Curtain walls are attached to the framework of a building and are installed alongside the walls of the building. Between adjacent curtain walls, an equal-pressure space is formed on the indoor side that is equal to the outdoor pressure, ensuring watertightness and suppressing the inflow of rainwater and the like into the room due to air currents.

JP2021-95748A

Conventional curtain walls have a large number of components such as sash frames for forming an equal pressure space, resulting in an increase in the total weight of the curtain wall. Therefore, in curtain walls, there is a problem of reducing the total weight by reducing the number of component parts in the sash frame and the like while ensuring watertightness.

The curtain wall according to the present invention, which forms the outer wall of a building and includes a frame body having a vertical frame and a horizontal frame, and a panel accommodated in an opening of the frame body, is provided such that the vertical frame is oriented in the expected direction of the building. a facing wall extending in the facing direction and connected to an end of the indoor facing wall on the outdoor side of the building; and a facing wall extending in the facing direction from the facing wall to the outdoor side in the facing direction. an outdoor prospective wall that extends to and faces a side edge of the panel in the facing direction in the facing direction, a first vertical frame seal portion disposed on the indoor prospective wall, and the outdoor prospective wall. a second vertical frame seal portion disposed at a position on the outdoor side of the panel from a position in the prospective direction of the interior wall surface on the indoor side of the building, the first vertical frame seal; A vertical equal pressure space is formed between the vertical frame sealing section and the second vertical frame sealing section, and the outdoor airtight line of the vertical equal pressure space is positioned closer to the outdoor side than the position of the inner wall surface of the panel in the expected direction. The horizontal frame is connected to an indoor vertical wall extending in the height direction of the building and an end of the indoor vertical wall in the height direction and extends in the expected direction. an indoor side support plate; an outdoor side vertical wall located on the outdoor side of the indoor side vertical wall and extending in the height direction; an outdoor side support plate facing a side edge in the height direction of the panel in the height direction; a first horizontal frame seal portion disposed on the indoor side support plate; a second horizontal frame seal portion disposed at a position on the outdoor side of the inner wall surface of the panel relative to a position in the prospective direction, the first horizontal frame seal portion and the second horizontal frame seal portion; A horizontal isobaric space is formed between the panels, and an airtight line on the outdoor side of the lateral isobaric space is set at a position closer to the outdoor side than the position of the inner wall surface of the panel in the prospective direction.

In the curtain wall according to the present invention, for example, the first vertical frame seal portion includes a vertical frame engaging recess, a vertical frame engaging protrusion that engages with the vertical frame engaging recess, and a vertical frame engaging protrusion that engages with the vertical frame engaging recess. a first vertical frame gasket disposed on the protrusion, the second vertical frame seal part being a second vertical frame gasket, and the first horizontal frame seal part having a horizontal frame engaging recessed part; The second horizontal frame seal portion includes a horizontal frame engaging protrusion that engages with the horizontal frame engaging recess, and a first horizontal frame gasket disposed on the horizontal frame engaging protrusion. It is a horizontal frame gasket.

In the curtain wall according to the present invention, for example, the first vertical frame seal portion is disposed in a region closer to the facing wall than an intermediate position in the facing direction of the indoor facing wall, and The vertical frame seal portion is disposed at a position closer to the outdoor side than an intermediate position in the expected direction of the panel in the outdoor side prospective wall.

In the curtain wall according to the present invention, for example, the first horizontal frame seal portion is disposed in a region closer to the outdoor vertical wall than an intermediate position in the prospective direction of the indoor support plate, and The second horizontal frame seal portion is disposed in the outdoor side support plate at a position closer to the outdoor side than an intermediate position in the direction in which the panel is viewed.

In the curtain wall according to the present invention, a first vertical frame seal portion forming a wind barrier is disposed on a prospective wall on the indoor side that is a part of the vertical frame, and a second vertical frame seal portion forming a rain barrier is disposed on the outdoor side. The panel is arranged in a prospective wall at a position that is on the outside side of the building compared to its position in the expected direction of the interior wall surface on the indoor side of the building, and a vertical frame is installed between the first vertical frame seal part and the second vertical frame seal part. In addition to forming an equal pressure space, the outdoor side airtight line of the vertical equal pressure space is set at a position that is closer to the outdoor side than the position in the expected direction of the inner wall surface of the panel. In other words, the space formed between the outdoor prospective wall and the outdoor prospective wall, where the interval is smaller than the space formed between the indoor prospective wall and the indoor prospective wall, is utilized as a vertical equal pressure space. , the vertical isobaric space is formed closer to the outside of the room than in the past. Therefore, unlike in the past, the number of recessed parts made of aluminum or the like and projections that engage with the recessed parts to which a gasket serving as a rain barrier is attached is eliminated. Therefore, the total weight of the vertical frame can be made lighter than before. Furthermore, since the vertical equal pressure space is formed closer to the outside of the room than in the past, the area of the vertical frame that is cooled by the outside air is reduced, improving dew resistance.

Further, a first horizontal frame seal portion forming a wind barrier is provided on the indoor side support plate which is a part of the horizontal frame, and a second horizontal frame seal portion forming a rain barrier is installed on the outdoor side support plate. is arranged at a position that is on the outside of the room compared to the position of the inner wall surface in the expected direction, and forms a horizontal equal pressure space between the first horizontal frame seal part and the second horizontal frame seal part, and also creates a horizontal equal pressure space. The outdoor side airtight line of the space is set at a position that is further outside the room than the position of the inner wall surface of the panel in the expected direction. In other words, the space formed between the outdoor side support plate and the outdoor side support plate, which is smaller in distance than the space formed between the indoor side support plate and the indoor side support plate, is utilized as a horizontal equal pressure space. , the horizontal isobaric space is formed closer to the outside of the room than in the past. Therefore, unlike in the past, the number of recessed parts made of aluminum or the like and projections that engage with the recessed parts to which a gasket serving as a rain barrier is attached is eliminated. Therefore, the total weight of the horizontal frame can be made lighter than before. Furthermore, since the horizontal equal pressure space is formed closer to the outside of the room than in the past, the area of the horizontal frame that is cooled by the outside air is reduced, improving dew-proofing properties.

It is an example of the front view of the curtain wall of this embodiment which is attached to the frame of a building and becomes an outer wall of the building, viewed from the outdoor side. FIG. 2 is a cross-sectional view of the curtain wall of the present embodiment taken along the line F1-F1 in FIG. 1 to illustrate the position of a vertical equal pressure space. FIG. 2 is a cross-sectional view of the curtain wall of the present embodiment taken along line F2-F2 in FIG. 1 to illustrate the position of a horizontal equal pressure space.

One embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Note that a component according to an embodiment and a description of the component may be described using multiple expressions. The components and their descriptions are examples and are not limited by the language in this specification. Components may also be identified by different names than herein.

FIG. 1 is a front view schematically showing a curtain wall 1 according to this embodiment. FIG. 2 is a cross-sectional view showing a part of the curtain wall 1 of this embodiment along the line F1-F1 in FIG. 1, and shows a location where two panel units 11 are adjacent to each other in the X direction. FIG. 3 is a longitudinal sectional view showing a part of the curtain wall 1 of this embodiment along the line F2-F2 in FIG. 1, and shows a location where two panel units 11 are adjacent in the Z direction.

The curtain wall 1 shown in FIG. 1, which is a panel body, forms, for example, an outer wall of a building (not shown). As shown in each drawing, the X-axis, Y-axis, and Z-axis are defined herein for convenience. The X-axis, Y-axis, and Z-axis are orthogonal to each other. The X-axis is provided along the width (width) of the curtain wall 1, the Y-axis is provided along the depth (depth) of the curtain wall 1, and the Z-axis is provided along the height of the curtain wall 1. provided. The X direction (finding direction) includes the +X direction and the -X direction. The Y direction (prospective direction) includes the +Y direction and the -Y direction. The Z direction includes a +Z direction (upward direction) and a -Z direction (downward direction). Further, the +Y direction is a direction from the indoors of the building to the outdoors, and is also referred to as the outdoor side. The -Y direction is the direction from the outside of the building toward the inside, and is also referred to as the indoor side.

As shown in FIG. 1, the curtain wall 1 includes a plurality of panel units 11 arranged side by side in the height direction (Z direction) and the facing direction (X direction). The panel unit 11 is assembled in advance as a unit before being installed on a building frame (not shown). The plurality of panel units 11 form the curtain wall 1 by being combined with each other. Each of the plurality of panel units 11 is attached to a building frame (not shown) using a fastener or the like.

Each of the plurality of panel units 11 has a frame 2, a plurality of panels 22, and a panel 23. The panels 22 and 23 are examples of exterior wall materials. The frame body 2 has an upper horizontal frame 5 and a lower horizontal frame 6, two vertical frames 33, an intermediate horizontal frame 7, and an intermediate vertical frame 35. Note that the frame body 2 may omit the intermediate horizontal frame 7 and the intermediate vertical frame 35. The upper horizontal frame 5, the lower horizontal frame 6, the vertical frame 33, the intermediate horizontal frame 7, and the intermediate vertical frame 35 are made of aluminum or other shapes formed by extrusion molding or the like.

The upper horizontal frame 5, the lower horizontal frame 6, and the intermediate horizontal frame 7 extend approximately in the X direction. The lower horizontal frame 6 is spaced apart from the upper horizontal frame 5 in approximately the -Z direction. The intermediate horizontal frame 7 is located between the upper horizontal frame 5 and the lower horizontal frame 6. The two vertical frames 33 extend substantially in the Z direction between both ends of the upper horizontal frame 5 and both ends of the lower horizontal frame 6. The intermediate vertical frame 35 is located between the two vertical frames 33 and extends substantially in the Z direction between the upper horizontal frame 5 and the lower horizontal frame 6.

A plurality of openings 37 and 38 are provided in the frame 2. The opening 37 is surrounded by the lower horizontal frame 6, the vertical frame 33, the intermediate horizontal frame 7, and the intermediate vertical frame 35. The opening 38 is surrounded by the upper horizontal frame 5, the vertical frame 33, the intermediate horizontal frame 7, and the intermediate vertical frame 35. The panels 22 and 23 fitted and housed in the openings 37 and 38 are, for example, laminated glass, but may also be made of a single sheet of glass. Note that the panels 22 and 23 may be spaced apart from the edges (inner peripheral surfaces) of the openings 37 and 38.

As shown in FIG. 2, the vertical frames 33 adjacent in the X direction include an indoor prospective wall 41 located on the -Y direction side (indoor side) and an end of the indoor prospective wall 41 on the +Y direction side (indoor side). It includes a facing wall 42 connected to the facing wall 42, an outdoor facing wall 43 extending from the facing wall 42 toward the outdoor side in the facing direction, and an outermost wall 44 located on the outdoor side.

In the example of FIG. 2, the indoor prospective wall 41, the facing wall 42, the outdoor prospective wall 43, and the outermost wall 44 are provided on the vertical frame 33, and are also provided on the intermediate vertical frame 35 (not shown). The vertical frame 33 shown in FIG. 2 will be mainly described below. The panel 23 and the intermediate vertical frame 35 shown in FIG. 1 can be understood by replacing the panel 22 and the vertical frame 33 in the following description with the panel 23 and the intermediate vertical frame 35. Furthermore, in the following description, for convenience, the direction toward the center of the corresponding panel 22 in the X direction may be referred to as the inner peripheral side. Further, in the X direction, the direction toward the outside of the corresponding panel 22 may be referred to as the outer peripheral side.

The room-side prospective wall 41 is formed into a plate shape extending along the YZ plane. The room-side prospective wall 41 has an inner circumferential surface 41a and an outer circumferential surface 41b located on the opposite side in the X direction with respect to the inner circumferential surface 41a. In the example shown in FIG. 2, the inner circumferential surface 41a and the outer circumferential surface 41b are formed substantially flat. A first vertical frame seal portion 45 is formed in a region of the outer circumferential surface 41b of the two interior facing walls 41 that is closer to the facing wall 42. In the example shown in FIG. 2, the first vertical frame seal portion 45 is formed in a region closer to the facing wall 42 than the intermediate position in the Y direction of the outer circumferential surface 41b. This is to bring the vertical equal pressure space 28, which will be described later, closer to the outside of the room.

For example, a pair of protrusions that protrude toward the outer circumferential surface 41b of the indoor prospective wall 41 located in the +X direction are formed on the expected indoor wall 41 located in the −X direction. A vertical frame engaging recessed portion 450 constituting the first vertical frame seal portion 45 is formed between them.

A vertical frame engagement protrusion 451 that constitutes the first vertical frame seal portion 45 and is insertable into the vertical frame engagement recessed portion 450 is formed on the interior prospective wall 41 located on the +X direction side. The vertical frame engagement protrusion 451 has a mounting groove, and a first vertical frame gasket 453 is disposed between the mounting grooves. The vertical frame engaging protrusion 451 is inserted into the vertical frame engaging recess 450, and the lip of the first vertical frame gasket 453 contacts one of the protrusions forming the vertical frame engaging recess 450 in the Y direction. The contact point between the lip of the first vertical frame gasket 453 and the inner surface of the vertical frame engaging recess 450 is located in the vertical equal pressure space 28 in the height direction formed between the vertical frames 33. This becomes the indoor airtight line 284. Note that the first vertical frame gasket 453, which acts as a wind barrier and is interposed as a partition between the vertical equal pressure space 28 and the room, is made of an elastic material such as ethylene propylene diene (EPDM) rubber, for example.

The facing wall 42 is integrally connected to the outdoor side end of the indoor facing wall 41 and extends substantially toward the outer circumference. Note that the distance between the indoor prospective wall 41 and the indoor prospective wall 41 in the facing direction is larger than the distance between the outdoor prospective wall 43 and the outdoor prospective wall 43 in the facing direction. The facing wall 42 has an outer side surface 42a that is formed substantially flat and faces toward the outdoor side.

On the outer surface 42a of the facing wall 42, for example, a gasket mounting protrusion projects toward the outdoor side. A gasket 425 is attached to the gasket attachment projection in a fitted manner, and the gasket 425 is in contact with the inner wall surface 22a of the panel 22 on the indoor side.

The outdoor facing wall 43 formed in a plate shape and extending along the YZ plane extends from the end on the outer peripheral side of the facing wall 42 in the +Y direction toward the outdoor side. Therefore, the indoor prospective wall 41, the facing wall 42, and the outdoor prospective wall 43 are connected to each other in a substantially step-like manner. The end portion of the outdoor side prospective wall 43 on the outdoor side is located on the outdoor side of the panel 22 with respect to the outer wall surface 22b, which is the opposite surface of the inner wall surface 22a.

The outdoor prospective wall 43 has an inner circumferential surface 43a and an outer circumferential surface 43b located on the opposite side in the X direction with respect to the inner circumferential surface 43a. The inner circumferential surface 43a of the outdoor prospective wall 43 faces the facing direction side edge 227 of the panel 22 in the facing direction. Attachment grooves 434 are formed in the outer circumferential surface 43b of each outdoor facing wall 43, and between any one of the attachment grooves 434, that is, the attachment grooves 434 on the +X direction side in the example of FIG. , a second vertical frame seal portion 437 is provided. The second vertical frame seal portion 437 is a second vertical frame gasket 437. Then, the lip of the second vertical frame gasket 437 contacts the outdoor facing wall 43 of the vertical frame 33 located on the −X direction side. The second vertical frame gasket 437 is disposed at a position on the outdoor side of the outdoor prospective wall 43 relative to the position in the prospective direction of the inner wall surface 22a of the panel 22. In particular, in this embodiment, the second vertical frame gasket 437 is located at a position on the outdoor side of the expected outdoor wall 43 from the intermediate position 229 of the panel 22, which is further on the outdoor side than the inner wall surface 22a of the panel 22. is arranged. This is to bring the vertical equal pressure space 28 closer to the outside of the room. Note that the intermediate position 229 of the panel 22 is an intermediate position between the inner wall surface 22a and the outer wall surface 22b of the panel 22.

The second vertical frame gasket 437, which acts as a rain barrier and is interposed as a partition between the outside air and the vertical equal pressure space 28, is made of, for example, EPDM rubber. The second vertical frame gasket 437 becomes the outdoor side airtight line 285 of the vertical equal pressure space 28 formed between the vertical frames 33 . For example, the second vertical frame gasket 437 is formed with an equal pressure hole (not shown) for introducing outside air into the vertical equal pressure space 28 and making the pressure inside the vertical equal pressure space 28 equal to the outside pressure. The vertical isobaric space 28 is a space whose atmospheric pressure is equal to the atmospheric pressure (external atmospheric pressure) outside the room (outside air). Further, as shown in FIG. 2, the outdoor airtight line 285 is set at a position that is closer to the outdoor side than the position of the inner wall surface 22a of the panel 22 in the expected direction.

An accommodation space 441 for accommodating the facing direction side edge 227 of the panel 22 is formed between the facing wall 42 and the plate-shaped outermost wall 44 extending along the XZ plane in the Y direction. There is. A rib 438, which is a long member with an L-shaped cross section, is attached to the inner circumferential surface 43a of the outdoor prospective wall 43, and a gasket 439 is sandwiched between the rib 438 and the outer wall surface 22b of the panel 22. The panel 22 is held down by the ribbed edge 438. The connecting portion between the ridge 438, the gasket 439, and the outermost wall 44 is sealed. The panel 22 is located between the facing wall 42 and the outermost wall 44, and is laminated glass in this embodiment. A spacer and a sealing material are arranged between the glass plates.

The vertical equal pressure space formed within the vertical frame of a conventional curtain wall is formed only between the interior facing wall and the interior facing wall. It was necessary to form an engagement protrusion and an engagement recess to be formed, as well as an engagement protrusion and an engagement recess formed of aluminum or the like to attach a gasket serving as a rain barrier, on the expected indoor wall. . Therefore, the total weight of the entire vertical frame increases and the number of steps for forming the structure increases.

In the curtain wall 1 of this embodiment, in the vertical frame 33 shown in FIG. By arranging the two vertical frame gaskets 437 in a position that is closer to the outdoor side than the position of the inner wall surface 22a of the panel 22 in the expected direction of the outdoor side expected wall 43, the indoor side expected wall 41 of the vertical frame 33 and the indoor side are A vertical equal pressure space 28 is formed from between the inner expected wall 41 and between the outdoor expected wall 43 and the outdoor expected wall 43, and the outdoor airtight line 285 of the vertical equal pressure space 28 is connected to the inner wall surface of the panel 22. It is set at a position on the outside of the room compared to the position in the viewing direction of 22a. That is, the vertical equal pressure space 28 is moved closer to the outside of the room than in the past. Therefore, one set of recessed parts made of aluminum or the like and projections that are attached to the gaskets that serve as rain barriers and engage with the recessed parts are reduced by one set than in the past. Therefore, the total weight of the vertical frame 33 can be made lighter than before. That is, in the curtain wall in general, as is the case with the curtain wall 1 of this embodiment, the distance between the outdoor prospective wall 43 and the indoor prospective wall 41 is smaller than the distance in the facing direction between the indoor prospective wall 41 and the indoor prospective wall 41. It has a structural characteristic that the distance in the facing direction from the outdoor prospective wall 43 becomes smaller. In the curtain wall 1 of this embodiment, by effectively utilizing the structural characteristics, the second vertical frame seal portion 437 serving as a rain barrier can be used as the second vertical frame gasket 437, and the first vertical frame seal There is no need for a large structure like the section 45, and as a result, the weight of the vertical frame 33 can be reduced. In addition, since the vertical equal pressure space 28 is formed closer to the outside of the room than in the past, the area of the vertical frame 33 that is cooled by the outside air is smaller than in the past, and the dew resistance is improved.

Below, the upper horizontal frame 5 and the lower horizontal frame 6 shown in FIG. 3 will be mainly explained. The upper horizontal frame 5 includes, for example, a hollow indoor side portion 5A. The indoor side part 5A is the indoor side part of the upper horizontal frame 5, and includes an indoor side vertical wall 50 extending along the XZ plane and formed in a plate shape, and a height direction of the indoor side vertical wall 50. an indoor support plate 51 that extends from the upper end toward the outdoor side (+Y direction); and a plate-shaped chamber that extends along the X-Z plane and is located on the outdoor side of the indoor vertical wall 50. It is formed by an outer vertical wall 52. Further, an outdoor side support plate 53 extends from the outdoor vertical wall 52 toward the outdoor side in the viewing direction. Further, the upper horizontal frame 5 includes an outermost wall 54 located on the outdoor side.

The lower horizontal frame 6 includes, for example, a hollow indoor side portion 6A. The indoor side part 6A is the indoor side part of the lower horizontal frame 6, and includes, for example, an indoor side vertical wall 60 located on the indoor side and extending along the XZ plane and formed in a plate shape, and An indoor support plate 61 extending from the vertical wall 60 to the outdoor side; an outdoor vertical wall 62 located on the outdoor side of the indoor vertical wall 60 and extending along the XZ plane and formed in a plate shape; It is formed of. Further, an outdoor side support plate 63 extends from the outdoor vertical wall 62 toward the outdoor side in the viewing direction. Further, the lower horizontal frame 6 includes an outermost wall 64 located on the outdoor side.

A substantially flat upper surface 51b of the indoor support plate 51 of the upper horizontal frame 5 is formed with a horizontal frame engaging protrusion 551 that constitutes the first horizontal frame seal portion 55. The horizontal frame engaging protrusion 551 has a mounting groove, and a first horizontal frame gasket 552 is disposed between the mounting grooves. On the other hand, in a region of the lower surface 61b of the indoor support plate 61 of the lower horizontal frame 6, a horizontal frame engagement recess 610 is formed which is recessed upward. The horizontal frame engaging protrusion 551 is preferably disposed in a region closer to the outdoor vertical wall 52 than the intermediate position in the projected direction of the indoor support plate 51, and the horizontal frame engaging recessed portion 610 is It is preferable that the horizontal equal pressure space 29 be placed closer to the outdoor vertical wall 62 than the intermediate position of the indoor support plate 61 in the forward direction, since the horizontal equal pressure space 29 can be brought closer to the outdoor side.

The horizontal frame engaging protrusion 551 is inserted into the horizontal frame engaging recess 610 constituting the first horizontal frame seal portion 55, and the lip of the first horizontal frame gasket 552 comes into contact with the side surface of the horizontal frame engaging recess 610. come into contact with The contact point between the lip of the first horizontal frame gasket 552, which acts as a wind barrier and acts as a partition between the horizontal equal pressure space 29 and the room, and the inner surface of the horizontal frame engaging recess 610 is located between the upper horizontal frame 5 and the lower horizontal frame. This becomes an airtight line 294 on the indoor side of the horizontal equal pressure space 29 formed between the frame 6 and the frame 6.

An upper edge 238, which is a side edge in the height direction of the panel 23, is formed on the outdoor side of the upper horizontal frame 5 by the outdoor side vertical wall 52, the outdoor side support plate 53, and the outermost wall 54. A housing space 5B is formed in which the housing is accommodated. The accommodation space 5B is a groove-shaped space. The upper edge 238 of the panel 23 is accommodated in the accommodation space 5B, and a gasket 521 is disposed between the inner wall surface 23a of the panel 23 facing the indoor side and the outer surface 520 of the outdoor vertical wall 52 facing the outdoor side. It is set up. A ridge 535, which is a long member having an L-shaped cross section, is attached to the lower surface of the outdoor side support plate 53. The panel 23 is held down by the ridge 535 with a gasket 536 sandwiched between the ridge 535 and the outer wall surface 23b of the panel 23, which is the opposite surface of the inner wall surface 23a. Further, the connecting portion between the ridge 535, the gasket 536, and the outermost wall 54 is sealed.

A lower edge 228, which is a side edge in the height direction of the panel 22, is formed on the outdoor side of the lower horizontal frame 6 by the outdoor side vertical wall 62, the outdoor side support plate 63, and the outermost wall 64. A housing space 6B is formed to accommodate the housing. The accommodation space 6B is a groove-shaped space. The lower edge 228 of the panel 22 is accommodated in the accommodation space 6B, and a gasket 621 is disposed between the inner wall surface 22a of the panel 22 facing the indoor side and the outer surface 620 of the outdoor vertical wall 62 facing the outdoor side. It is set up. A raised edge 635, which is a long member with an L-shaped cross section, is attached to the upper surface of the outdoor support plate 63, and a gasket is inserted between the raised edge 635 and the outer wall surface 22b, which is the opposite surface of the inner wall surface 22a of the panel 22. The panel 22 is held down by the ridges 635 with the edges 636 sandwiched therebetween. The connecting portion between the ridge 635, the gasket 636, and the outermost wall 64 is sealed.

The outdoor support plate 63 of the lower horizontal frame 6 has an upper surface 630 and a lower surface 631 that is located on the opposite side in the Z direction to the upper surface 630 and is substantially flat in this embodiment. The outdoor side support plate 53 of the upper horizontal frame 5 has a lower surface 530 and an upper surface 533 located on the opposite side of the lower surface 530 in the Z direction and in which a mounting groove 532 is formed. A second horizontal frame seal portion 537 is disposed between the attachment grooves 532 . The second horizontal frame seal portion 537 is, for example, a second horizontal frame gasket 537. Then, the lip of the second horizontal frame gasket 537 contacts the lower surface 631 of the outdoor side support plate 63 facing in the Z direction. The second horizontal frame gasket 537 is disposed in the outdoor support plate 63 at a position closer to the outdoor side than the inner wall surface 22a of the panel 22 and the inner wall surface 23a of the panel 23 in the forward direction. In particular, in the present embodiment, a portion of the outdoor support plate 63 that is located on the outdoor side of the panel 22 and the intermediate position 229 of the panel 23, which is further on the outdoor side than the inner wall surface 22a of the panel 22 and the inner wall surface 23a of the panel 23, is located on the outdoor side. The second horizontal frame gasket 537 is disposed at a position where . This is to bring the horizontal equal pressure space 29 closer to the outside of the room.

The second horizontal frame gasket 537, which acts as a rain barrier and is interposed as a partition between the outside air and the horizontal equal-pressure space 29, becomes the outdoor side airtight line 295 of the horizontal equal-pressure space 29. The second horizontal frame gasket 537 is formed with an equal pressure hole (not shown) that introduces outside air into the horizontal equal pressure space 29 and makes the inside of the horizontal equal pressure space 29 equal to the outside pressure. Further, as shown in FIG. 3, the outdoor airtight line 295 is set at a position that is closer to the outdoor side than the position of the inner wall surface 22a of the panel 22 and the inner wall surface 23a of the panel 23 in the expected direction. The attachment position of the second horizontal frame gasket 537 may be not on the upper surface 533 side of the outdoor support plate 53 of the upper horizontal frame 5 but on the lower surface 631 side of the outdoor support plate 63 of the lower horizontal frame 6.

The horizontal equal pressure space formed within the horizontal frame of a conventional curtain wall is formed only between the indoor side support plate of the upper horizontal frame and the indoor side support plate of the lower horizontal frame. That is, an engaging protrusion and an engaging recess made of aluminum or the like for attaching a gasket that is a wind barrier, and an engaging protrusion and an engaging recess made of aluminum or the like for attaching a gasket that is a rain barrier. It was necessary to form each on the indoor side support. Therefore, the total weight of the entire horizontal frame increases and the number of steps for forming the structure increases.

In the curtain wall 1 of this embodiment, in the upper horizontal frame 5 and the lower horizontal frame 6, the seal portions provided on the indoor support plate 51 and the indoor support plate 61 are only the first horizontal frame seal portion 55, and the second The second horizontal frame gasket 537, which is the horizontal frame seal portion 537, is arranged in the outdoor side support plate 63 at a position that is closer to the outdoor side than the position of the inner wall surface 22a of the panel 22 and the inner wall surface 23a of the panel 23 in the expected direction. are doing. Then, a horizontal equal pressure space 29 is formed between the indoor side support plate 51 and the indoor side support plate 61 and between the outdoor side support plate 53 and the outdoor side support plate 63, and a horizontal equal pressure space 29 is formed on the outdoor side of the horizontal equal pressure space 29. The airtight line 295 is set at a position closer to the outdoor side than the position of the inner wall surface 22a of the panel 22 and the inner wall surface 23a of the panel 23 in the expected direction. That is, the horizontal equal pressure space 29 is moved closer to the outside of the room than in the past. Therefore, one set of recessed parts made of aluminum or the like and projections that are attached to the gaskets that serve as rain barriers and engage with the recessed parts are reduced by one set than in the past. Therefore, the total weight of the upper horizontal frame 5 and the lower horizontal frame 6 can be made lighter than before. That is, in the curtain wall in general, as in the curtain wall 1 of this embodiment, the distance between the outdoor side support plate 53 and the indoor side support plate 53 is smaller than the distance in the height direction between the indoor side support plate 51 and the indoor side support plate 61. It has a structural characteristic that reduces the distance in the height direction from the outdoor support plate 63. In the curtain wall 1 of this embodiment, by effectively utilizing the structural characteristics, the second horizontal frame seal portion 537 serving as a rain barrier can be used as the second horizontal frame gasket 537, and the first horizontal frame seal There is no need for a large structure like the section 55, and as a result, the weight of the upper horizontal frame 5 and the lower horizontal frame 6 can be reduced. Furthermore, since the horizontal equal pressure space 29 is formed closer to the outside of the room than in the past, the areas of the upper horizontal frame 5 and the lower horizontal frame 6 that are cooled by the outside air are smaller than in the past, and dew proofing properties are improved.

The Sustainable Development Goals (SDGs) are among the 17 international goals adopted at the United Nations Summit in September 2015. The curtain wall 1 according to the present embodiment can contribute to achieving, for example, the goal of "classification code 11: Creating a city where people can continue to live" among the 17 goals for which classification codes of the SDGs are determined. Furthermore, although an embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. This novel embodiment can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. The embodiments and their modifications are included within the scope and gist of the invention, as well as within the scope of the invention described in the claims and its equivalents.

1: Curtain wall
22, 23: Panel 28: Vertical equal pressure space 29: Horizontal equal pressure space 33: Vertical frame 41: Indoor side prospective wall
42:Mitsuke wall
43: Outdoor side prospective wall 437: Second vertical frame gasket (second vertical frame seal part)
44: Outermost wall 45: First vertical frame seal part 450: Vertical frame engagement recessed part 451: Vertical frame engagement protrusion 453: First vertical frame gasket 5: Upper horizontal frame
50: Indoor side vertical wall 51: Indoor side support plate 52: Outdoor side vertical wall
53: Outdoor side support plate 537: Second horizontal frame seal part (second horizontal frame gasket)
55: First horizontal frame seal portion 551: Horizontal frame engagement protrusion 552: First horizontal frame gasket 6: Lower horizontal frame 6A: Indoor side part 60: Indoor side vertical wall 61: Indoor side support plate 610: Horizontal frame engagement Recessed portion 62: Outdoor side vertical wall 63: Outdoor side support

Claims (4)

A curtain wall forming an outer wall of a building, comprising a frame body having a vertical frame and a horizontal frame, and a panel accommodated in an opening formed by the vertical frame and the horizontal frame,
The vertical frame includes an indoor prospective wall extending in the prospective direction of the building, a facing wall connected to an end of the indoor prospective wall on the outdoor side of the building and extending in the facing direction, and a facing wall extending in the facing direction. an outdoor facing wall extending from the attached wall to the outdoor side in the facing direction and facing a side edge of the panel in the facing direction; and a first vertical wall disposed on the indoor facing wall. a frame seal part, and a second vertical frame seal part disposed in the outdoor prospective wall at a position closer to the outdoor side than the position of the inner wall surface of the panel on the indoor side of the building in the prospective direction; , forming a vertical equal pressure space between the first vertical frame seal part and the second vertical frame seal part, and connecting the outdoor side airtight line of the vertical equal pressure space to the inner wall surface of the panel. Set at a position that is closer to the outdoor side than the position in the expected direction,
The horizontal frame includes: an indoor vertical wall extending in the height direction of the building; an indoor support plate connected to an end of the indoor vertical wall in the height direction and extending in the prospective direction; an outdoor side vertical wall located on the outdoor side of the indoor side vertical wall and extending in the height direction; and an outdoor side vertical wall extending from the indoor side vertical wall toward the outdoor side in the prospective direction on the height side of the panel. an outdoor side support plate facing the edge in the height direction; a first horizontal frame seal portion disposed on the indoor side support plate; a second horizontal frame seal part disposed at a position closer to the outdoor side than the position in the forward direction, and a lateral equal pressure is provided between the first horizontal frame seal part and the second horizontal frame seal part. A curtain wall that forms a space and sets an outdoor side airtight line of the horizontal equal pressure space at a position that is closer to the outdoor side than a position of the inner wall surface of the panel in the prospective direction. The first vertical frame seal portion includes a vertical frame engaging recess, a vertical frame engaging protrusion that engages with the vertical frame engaging recess, and a first vertical frame disposed on the vertical frame engaging protrusion. comprising a gasket;
The second vertical frame seal portion is a second vertical frame gasket,
The first horizontal frame seal portion includes a horizontal frame engaging recess, a horizontal frame engaging protrusion that engages with the horizontal frame engaging recess, and a first horizontal frame disposed on the horizontal frame engaging protrusion. comprising a gasket;
The curtain wall according to claim 1, wherein the second horizontal frame seal portion is a second horizontal frame gasket. The first vertical frame seal portion is disposed in a region closer to the facing wall than an intermediate position of the indoor facing wall in the facing direction, and the second vertical frame sealing portion is disposed in a region closer to the facing wall than an intermediate position in the facing direction of the indoor facing wall. The curtain wall according to claim 1 or 2, wherein the curtain wall is disposed at a position on the outside of the room rather than an intermediate position of the panel in the direction of view of the wall. The first horizontal frame seal portion is disposed in a region closer to the outdoor side vertical wall than the intermediate position of the indoor side support plate in the forward direction, and the second horizontal frame seal portion is disposed in a region closer to the outdoor side vertical wall. The curtain wall according to claim 3, wherein the curtain wall is disposed in the support plate at a position closer to the outdoor side than an intermediate position of the panel in the prospective direction.

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