JP2017115568A - Curtain wall unit, curtain wall installation structure, and installation method of curtain wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curtain wall unit capable of carrying out an installation work in a short period of time, and to provide a curtain wall installation structure, and an installation method of curtain wall.SOLUTION: A curtain wall unit 10 is a curtain wall unit which is installed to a building frame B, which includes: an inner skin 10B which is disposed along the building frame B; an outer skin 10A which is disposed to the outdoor side of the inner skin 10B being interposed by a gap; and coupling members 6, 7 for coupling the inner skin 10B and the outer skin 10A. The inner skin 10B has a fixing part 91 which is fixed to a building frame B.SELECTED DRAWING: Figure 4

Description

The present invention relates to a curtain wall unit constituting an outer wall of a building, a curtain wall, and a method for constructing the curtain wall.

Conventionally, the outer wall of a building such as a mid-to-high-rise building is configured by fixing a glass panel in the frame, and is configured as an outer wall by joining a fastener attached to the housing to a bracket attached to the curtain wall. There are many. In addition, a so-called double skin curtain wall is also known in which glass is disposed in a double manner with a distance in the prospective direction.

For example, the double skin curtain wall described in Patent Document 1 below is configured by arranging a plurality of curtain wall units vertically and horizontally. The curtain wall unit is a frame formed in a rectangular shape by an upper horizontal frame, a lower horizontal frame, a vertical frame, etc., an outdoor glass and a spandrel glass disposed on the outdoor side inside the frame, and disposed on the indoor side. Indoor-side glass and board. The upper horizontal frame, the lower horizontal frame, and the vertical frame constituting the frame body have a depth dimension corresponding to a distance dimension in the prospective direction between the outdoor side glass and the indoor side glass. It is partitioned.

The double skin curtain wall described in the following Patent Document 2 includes an inner skin fixed to the wall portion of the housing via a joint metal, and a cantilever support portion provided so as to protrude from the wall portion to the outdoor side. And an outer skin fixed via a joint hardware.

JP 2011-111833 A JP 2010-270480 A

However, in the double skin curtain wall described in Patent Document 1, the space between the outdoor glass and the indoor glass is surrounded by frame materials such as an upper horizontal frame, a lower horizontal frame, and a vertical frame. Therefore, there is a problem that the air flow into and out of each curtain wall unit cannot be sufficiently ensured, and the ventilation efficiency is lowered.

In addition, in the double skin curtain wall described in Patent Document 2, in order to support and fix the outer skin to the housing, it is necessary to project a member such as a cantilever support portion to the outdoor side of the inner skin. For this reason, multiple works such as construction work, waterproof work, curtain wall installation work, and installation work of incidentals such as gratings are necessary. There is a problem that water tightness and air tightness are difficult to be secured.

Therefore, the present invention has been made in view of the above circumstances, and provides a curtain wall unit, a curtain wall installation structure, and a curtain wall construction method that can be constructed in a short period of time.

In order to achieve the above object, the present invention employs the following means. That is, the curtain wall unit according to the present invention is a curtain wall unit attached to a housing, and an inner skin disposed along the housing and an outer skin disposed with a space on the outdoor side of the inner skin. And a connecting member that connects the inner skin and the outer skin, wherein the inner skin has a fixing portion that is fixed to the housing.

The curtain wall unit configured as described above includes an inner skin, an outer skin, and a connecting member that connects the inner skin and the outer skin. This curtain wall unit is fixed to the outer peripheral part of the building by the fixing part of the inner skin. Therefore, construction is possible in a short time by the unitized curtain wall. Further, the inner skin and the outer skin are connected by a connecting member. Therefore, inflow and outflow of air can be performed without specifying a route in the outer peripheral portion of the space between the inner skin and the outer skin, and ventilation efficiency can be ensured.

Further, the curtain wall unit according to the present invention provides a space between the inner skin and the outer skin and the outside by the plurality of connecting members, the outer peripheral end of the inner skin, and the outer peripheral end of the outer skin. It is preferable that a communication space that communicates is formed.

In the curtain wall unit configured as described above, a communication space that communicates the space between the inner skin and the outer skin with the outside by the plurality of connecting members, the outer peripheral end of the inner skin, and the outer peripheral end of the outer skin. Is formed. Therefore, air can be allowed to flow between the inner skin and the outer skin from the outside through the communication space, and air can be allowed to flow to the outside from between the inner skin and the outer skin, thereby ensuring ventilation efficiency. be able to.

In the curtain wall unit according to the present invention, the connecting member connects an upper connecting portion that connects the upper portion of the inner skin and the upper portion of the outer skin, and a lower portion of the inner skin and a lower portion of the outer skin. And a lower connecting portion.

In the curtain wall unit configured as described above, the inner skin and the outer skin are connected at the upper part and the lower part by the upper connecting part and the lower connecting part. Therefore, the inner skin and the outer skin can be easily connected and a highly rigid curtain wall unit can be obtained.

In the curtain wall unit according to the present invention, the inner skin includes an inner side frame and an inner glass disposed inside the inner side frame, and the inner glass includes the inner side frame. It may be fixed to the body via an airtight material.

In the curtain wall unit configured as described above, the inner glass is fixed to the inner side frame body through the airtight material, so that the airtight material suppresses intrusion to the indoor side and can secure water tightness. .

Moreover, in the curtain wall unit according to the present invention, the inner skin may have a board disposed on the indoor side of the inner glass inside the inner side frame.

In the curtain wall unit configured in this way, the inner skin has a board arranged on the inner side of the inner side frame body than the inner glass, so that the exposure of the outer peripheral part of the building is suppressed by the board. can do.

In the curtain wall unit according to the present invention, the inner skin may have a waist portion and a window portion, and may be disposed so as to overlap the outer skin.

In the curtain wall unit configured as described above, the inner skin has a waist portion and a window portion, and is disposed so as to overlap the outer skin. That is, since the inner skin is formed with substantially the same size so as to overlap the outer skin, a large inner skin can be secured.

Moreover, in the curtain wall unit according to the present invention, the outer skin includes an outer side frame body and an outer glass disposed inside the outer side frame body, on the outdoor side of the outer side frame body. A packing material extending in the prospective direction may be disposed.

In the curtain wall unit configured as described above, a concave portion that is recessed toward the outdoor side is formed on the indoor side of the outer side frame, and the end portion of the connecting member is disposed in the concave portion. Therefore, when viewed from the outdoor side, the connecting member is hidden by the outer side frame and cannot be seen, so that the appearance can be improved.

Further, the curtain wall installation structure according to the present invention is a curtain wall in which the curtain wall unit described in any one of the above is arranged vertically and / or horizontally adjacent to the casing, and the adjacent inner wall The skins are connected to each other, and the adjacent outer skins are arranged with a gap therebetween.

In the curtain wall installation structure configured as described above, the curtain wall units are connected to each other by connecting adjacent inner skins. Further, since the outer skins adjacent to each other are arranged with a gap therebetween, vibrations, clearances, and the like of the curtain wall unit can be absorbed by the gaps between the outer skins.

Further, the curtain wall construction method according to the present invention includes a curtain wall unit in which an inner skin arranged along a frame and an outer skin arranged on the outdoor side of the inner skin are connected by a connecting member. A unit assembling step for assembling, a fixing step for fixing the inner skin to the housing, and a unit connecting step for connecting the inner skins of adjacent curtain wall units.

In the curtain wall construction method configured as described above, in the unit assembly process, the inner skin disposed along the housing and the outer skin disposed on the outdoor side of the inner skin are coupled by a coupling member, The curtain wall unit is assembled. In the fixing step, the inner skin is fixed to the housing. In the unit connecting step, the inner skins of adjacent curtain wall units are connected. Therefore, since the unitized curtain wall unit may be fixed to the housing, the work at the site can be performed in a short period of time. Further, the inner skin and the outer skin are connected by a connecting member. Therefore, inflow and outflow of air can be performed without specifying a route in the outer peripheral portion of the space between the inner skin and the outer skin, and ventilation efficiency can be ensured.

In addition, the curtain wall construction method according to the present invention includes an accessory installation step of installing an accessory on the curtain wall unit after the unit assembly step and before the fixing step.

In the construction method of the curtain wall configured as described above, the construction period can be shortened by installing the accessory in the curtain wall unit in advance.

According to the curtain wall unit, the curtain wall installation structure, and the curtain wall construction method according to the present invention, construction can be performed in a short time by the unitized curtain wall.

It is a front view of the curtain wall installation structure concerning one embodiment of the present invention. It is the XX sectional view taken on the line of FIG. It is the schematic perspective view which looked at the curtain wall unit which concerns on one Embodiment of this invention from the outdoor side. It is the a section enlarged view of FIG. It is the b section enlarged view of FIG. It is the YY sectional view taken on the line of FIG. It is the c section enlarged view of FIG. It is the d section enlarged view of FIG. It is the e section enlarged view of FIG. It is the f section enlarged view of FIG. It is the g section enlarged view of FIG.

Hereinafter, a curtain wall installation structure according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a curtain wall installation structure according to an embodiment of the present invention. 2 is a cross-sectional view taken along line XX of FIG. As shown in FIGS. 1 and 2, a curtain wall (curtain wall installation structure) 1 constituting an outer wall of a building A includes an outer face material 1A disposed on the outdoor side, and a predetermined inner side of the outer face material 1A. It is comprised with the double skin which has the inner surface material 1B arrange | positioned with a space | interval.

FIG. 3 is a schematic perspective view of the curtain wall unit as seen from the outdoor side. The curtain wall 1 shown in FIG. 1 is configured by arranging a plurality of curtain wall units 10 shown in FIG. 3 adjacent in the vertical direction and the horizontal direction (width direction of the building A). The height of the curtain wall unit 10 is a height corresponding to each floor height.

As shown in FIG. 3, the curtain wall unit 10 includes an outer skin 10A disposed on the outdoor side, an inner skin 10B disposed on the indoor side, and an upper support member that connects the outer skin 10A and the inner skin 10B ( Bracket 91 and fastening bolts provided on connecting member, upper connecting part) 6 and lower support member (connecting member, lower connecting part) 7, the lower part of beam B1 (see FIG. 4, the same applies hereinafter) and the upper part of beam B1. 91B. That is, the outer skin 10A constitutes a part of the outer face material 1A, and the inner skin 10B constitutes a part of the inner face material 1B. The outer skin 10 </ b> A and the inner skin 10 </ b> B are formed with substantially the same size and are arranged so as to overlap in front view.

The outer skin 10 </ b> A has a frame body (outer side frame body) 2 formed in a four-sided frame shape when viewed from the front, and an outer glass 30 disposed inside the frame body 2.

The frame body 2 extends in the up-down direction by connecting the upper frame 21 extending in the left-right direction, the lower frame 22 disposed below the upper frame 21 and extending in the left-right direction, and both ends of the upper frame 21 and the lower frame 22. And a vertical frame 23. The upper frame 21, the lower frame 22, and the vertical frame 23 may be collectively referred to simply as the frame 20.

FIG. 4 is an enlarged view of part a in FIG. FIG. 5 is an enlarged view of part b of FIG. FIG. 6 is a cross-sectional view taken along line YY of FIG. FIG. 7 is an enlarged view of part c of FIG. As shown in FIGS. 5 and 7, each of the frames 20 includes a base portion 25 disposed on the indoor side, and a distal end portion 26 disposed on the outdoor side and integrated with the base portion 25. Have. A concave groove 26 </ b> H that is recessed from the end of the outer glass 30 is formed by the outdoor side of the base portion 25 and the tip end portion 26.

In the present embodiment, the outer glass 30 is a laminated glass made of, for example, two glasses. An end portion of the outer glass 30 is inserted into the recessed groove 26 </ b> H of the frame 20. Further, an airtight material 36 such as a gasket is fitted between the end of the outer glass 30 and the recessed groove 26H.

As shown in FIG. 4, a blind support portion 28 is attached to the indoor side of the upper frame 21 along the longitudinal direction of the upper frame 21. A blind (attachment) C is attached to the lower surface of the blind support portion 28.

As shown in FIG. 3, the inner skin 10 </ b> B includes a frame (inner side frame) 4, an upper inner glass (inner glass) 51 disposed inside the frame 4, a board 52, and a lower inner glass (inner glass). 53). In the present embodiment, the portion where the upper inner glass 51 and the board 52 are disposed is the waist portion 50A, and the portion where the lower inner glass 53 is disposed is the window portion 50B.

The frame 4 includes an upper frame 41 extending in the left-right direction, a lower frame 42 disposed below the upper frame 41 and extending in the left-right direction, and an intermediate frame disposed between the upper frame 41 and the lower frame 42 and extending in the left-right direction. 44, and a vertical frame 43 that connects both ends of the upper frame 41, the lower frame 42, and the intermediate frame 44 and extends in the vertical direction. The upper frame 41, the lower frame 42, the intermediate frame 44, and the vertical frame 43 may be collectively referred to simply as a frame 40.

FIG. 8 is an enlarged view of a portion d in FIG. FIG. 9 is an enlarged view of part e in FIG. FIG. 10 is an enlarged view of part f in FIG. FIG. 11 is an enlarged view of part g in FIG. As shown in FIG. 8 to FIG. 11, an upper inner glass 51 is arranged on the outdoor side and a board 52 is arranged on the indoor side in a portion surrounded by the upper frame 41, the intermediate frame 44 and the vertical frame 43. Yes. The upper inner glass 51 and the board 52 are spaced apart in the prospective direction. In the present embodiment, a member having fire resistance is adopted as the board 52.

As shown in FIGS. 8, 10, and 11, the frame 40 includes a base portion 45 disposed on the indoor side and a distal end portion 46 disposed on the outdoor side and integrated with the base portion 45. And have. A concave groove 46 </ b> H that is recessed from the ends of the upper inner glass 51 and the lower inner glass 53 is formed by the outdoor side of the base portion 45 and the distal end portion 46. The recessed groove 46H is provided on the outdoor side of the frame 40.

The end portions of the upper inner glass 51 and the lower inner glass 53 are inserted into the recessed grooves 46H of the frame 40. Further, an airtight material 56 such as a gasket is fitted between the end portion of the inner glass and the groove 46H.

As shown in FIG. 10, a valve hole 44H recessed downward is provided on the upper surface of the base 45 of the intermediate frame 44, and a condensation drain valve 48 is provided in the valve hole 44H.

As shown in FIGS. 8, 10, and 11, a lower inner glass 53 is disposed in a portion surrounded by the intermediate frame 44, the lower frame 42, and the vertical frame 43. In the present embodiment, the lower inner glass 53 is a laminated glass composed of two glasses.

As shown in FIG. 11, on the indoor side of the vertical frame 43, a support frame 49 that supports the end portion of the board 52 is provided along the vertical direction. The support frame 49 is formed with a recessed groove 49H that is recessed from the end of the board 52.

The left and right ends of the board 52 are inserted into the recessed grooves 46H of the support frame 49. As shown in FIG. 10, the lower end portion of the board 52 is supported by a support surface 44 </ b> A along a horizontal plane provided in the intermediate frame 44. Further, the left and right end portions of the lower end portion of the board 52 are sandwiched between the standing surface 44 </ b> B standing from the support surface of the intermediate frame 44 and the vertical frame 43. As shown in FIG. 8, the upper end portion of the board 52 is provided on the upper frame 41 and is in contact with the contact portion 41A. Further, the end in the left-right direction at the upper end of the board 52 is sandwiched between the contact portion 41 </ b> A of the upper frame 41 and the vertical frame 43.

As shown in FIG. 3, the upper support member 6 connects the upper end of the vertical frame 23 of the outer skin 10A and the upper end of the vertical frame 43 of the inner skin 10B. The lower support member 7 connects the lower end portion of the vertical frame 23 of the outer skin 10A and the lower end portion of the vertical frame 43 of the inner skin 10B. The upper support member 6 and the lower support member 7 are respectively provided on the left and right sides of the curtain wall unit 10 and integrate the outer skin 10A and the inner skin 10B. In this embodiment, the upper support material 6 and the lower support material 7 are comprised with the metal which has rust prevention property, such as high-strength aluminum and stainless steel, for example.

As shown in FIG. 7, the base 25 of the vertical frame 23 of the outer skin 10 </ b> A has a first wall portion 81 extending along the left-right direction of the outer skin 10 </ b> A, and an indoor side from the end of the first wall portion 81. A second wall portion 82 is provided extending toward the front.

A back plate 85 is provided on the back surface of the second wall portion 82 (the inner surface in the width direction of the curtain wall unit 10). In the present embodiment, the back plate 85 is made of a metal having rust prevention properties such as high-strength aluminum or stainless steel.

An attachment space (concave portion) S <b> 1 is formed in the vertical frame 23 by the first wall portion 81 and the second wall portion 82, which is recessed toward the center side in the left-right direction and on the outdoor side.

As shown in FIG. 11, the base 45 of the vertical frame 43 of the inner skin 10B has a third wall portion 83 extending along the left-right direction of the inner skin 10B, and an end portion of the third wall portion 83 facing the outdoor side. A fourth wall portion 84 extending in the direction is provided.

A back plate 85 is provided on the back surface of the fourth wall portion 84 (the inner surface in the width direction of the curtain wall unit 10). In the present embodiment, the back plate 85 is made of a metal having rust prevention properties such as high-strength aluminum or stainless steel.

In the vertical frame 43, the third wall portion 83 and the fourth wall portion 84 form a mounting space S2 that is recessed in the center in the left-right direction and on the indoor side.

As shown in FIGS. 3, 7 and 11, the upper support member 6 is formed in a rod shape extending in the prospective direction. The upper support member 6 is formed in, for example, a rectangular shape in a cross-sectional view along the finding direction.

The upper support member 6 is disposed along the second wall portion 82 of the outer skin 10A and the fourth wall portion 84 of the inner skin 10B. Further, the end portion of the upper support member 6 is in contact with the first wall portion 81 of the outer skin 10A and the third wall portion 83 of the inner skin 10B.

The end portion on the outdoor side of the upper support member 6 is fixed with screws 61 to the second wall portion 82 of the outer skin 10 </ b> A and the back plate 85 provided on the back surface of the second wall portion 82. Further, the indoor side end portion of the upper support member 6 is fixed to the fourth wall portion 84 of the inner skin 10 </ b> B and a back plate 85 provided on the back surface of the fourth wall portion 84 with screws 61. The screws 61 are screwed together in a total of four places, for example, two rows spaced apart in the prospective direction and two rows spaced apart in the vertical direction.

As shown in FIG. 3, the lower support member 7 is formed in a rod shape extending in the prospective direction. The lower support member 7 is formed in an L shape, for example, in a cross-sectional view along the finding direction.

The lower support member 7 includes a mounting plate portion 71 extending along a vertical plane, and a support plate portion 72 that is bent from an end portion of the mounting plate portion 71 and extends along a horizontal plane. As shown in FIGS. 3 and 4, a concave portion 73 that is recessed downward is formed on the center side in the longitudinal direction of the mounting plate portion 71.

The attachment plate portion 71 of the lower support member 7 is disposed along the second wall portion 82 of the outer skin 10A and the fourth wall portion 84 of the inner skin 10B. Further, the end portion of the lower support member 7 is in contact with the first wall portion 81 of the outer skin 10A and the third wall portion 83 of the inner skin 10B. The support plate portion 72 of the lower support member 7 is disposed along the lower surface of the vertical frame 43 of the outer skin 10A and the inner skin 10B.

The end portion on the outdoor side of the mounting plate portion 71 is fixed to the back wall 85 provided on the back surface of the second wall portion 82 and the second wall portion 82 of the outer skin 10 </ b> A with screws 61. Further, the indoor side end of the mounting plate 71 is fixed by screws 74 to the fourth wall 84 of the inner skin 10 </ b> B and the back plate 85 provided on the back surface of the fourth wall 84. The screws 74 are screwed together in, for example, a total of four places in two rows separated in the prospective direction and in two rows separated in the vertical direction.

A grating plate (attachment) G (see FIGS. 4 and 6) having a through hole (not shown) penetrating in the vertical direction is provided on the indoor side between the pair of lower support members 7. In the present embodiment, the end of the grating plate G is fixed to the support plate portion 72 of the lower support member 7 with screws (not shown) or the like.

Thus, the outer skin 10A and the inner skin 10B are connected by the support members (upper support member 6 and lower support member 7) formed in the shape of four bars. The outer peripheral edge of the outer skin 10A, the outer peripheral edge of the inner skin 10B, and the support material (upper support material 6, lower support material 7), and the space between the outer skin 10A and the inner skin 10B and the curtain wall unit 10 A communication space K1 (see FIG. 3) that communicates with the outside is formed. In addition, the number of support members and the arrangement position can be set as appropriate.

In this embodiment, the outer skin 10A and the inner skin 10B are the upper support material 6 and the lower support material 7 so that the separation distance between the outer glass 30 and the upper inner glass 51 and the lower inner glass 53 is about 600 mm, for example. It is connected by. Thereby, a large cavity is formed between the outer skin 10A and the inner skin 10B.

Next, a configuration in which the curtain wall unit 10 is fixed to the frame B of the building A will be described. As shown in FIGS. 8, 10 and 11, a bracket (fixing portion) 91 is fastened by a fastening bolt 91B on the indoor side at a position slightly above the upper part of the vertical frame 43 and the intermediate frame 44 of the inner skin 10B. It is fixed.

On the other hand, a plate P protruding horizontally along the outdoor side is fixed to the housing B such as the beam B1 of the building A. The plate P and the bracket 91 are fixed via a fastener 92 formed in an L shape.

That is, the fastener 92 has a horizontal portion 93 along the plate P and a vertical portion 94 bent from an end portion of the horizontal portion 93. The horizontal portion 93 is fixed to the plate P with fastening bolts 93B, and the vertical portion 94 is fixed to the bracket 91 with fastening bolts 94B.

Next, the connection between the curtain wall units 10 fixed to the housing B will be described. As shown in FIG. 11, on the indoor side of the curtain wall unit 10 adjacent in the left-right direction, the vertical frames 43 of the adjacent inner skins 10B are fitted.

That is, the base 45 of one vertical frame 43 is provided with an outer protruding piece 86 that protrudes toward the other vertical frame 43 and extends in the vertical direction. A pair of outer projecting pieces 86 are provided apart in the prospective direction.

The base 45 of the other vertical frame 43 is provided with an inner protruding piece 87 that protrudes toward the one vertical frame 43 and extends in the vertical direction. A pair of inner projecting pieces 87 are provided spaced apart in the prospective direction, a rain barrier is provided on the outdoor side, and a window barrier is provided on the indoor side. An inner projecting piece 87 is fitted inside the outer projecting piece 86.

Further, each vertical frame 43 is formed with a concave groove 88 that is recessed in a separating direction on opposing surfaces facing each other. The concave groove 88 is formed to have a T shape in a horizontal sectional view. Between the concave grooves 88, an opening stopper 89 having a wide tip formed along the shape of the concave groove 88 is disposed. The retaining member is inserted from above after the vertical frames 43 are fitted to each other.

The fitting of the inner projecting piece 87 and the outer projecting piece 86 and the movement of the vertical frames 43 away from each other are restricted by the opening stopper 89 inserted between the concave grooves 88.

As shown in FIG. 7, on the outdoor side of the curtain wall unit 10 adjacent in the left-right direction, the adjacent outer skins 10A are not directly connected to each other, the vertical frames 23 are arranged with a gap S3, and the vertical A splash barrier (airtight material) 96 is provided between the frames 23.

As shown in FIG. 8, on the indoor side of the curtain wall unit 10 adjacent in the vertical direction, the upper frame 41 of the inner skin 10B arranged on the lower side and the lower frame 42 of the inner skin 10B arranged on the upper side are fitted. Are combined.

That is, the base portion 45 of the upper frame 41 of the inner skin 10B disposed on the lower side is provided with an outer protruding piece 86 that protrudes upward and extends in the left-right direction. A pair of outer projecting pieces 86 are provided spaced apart in the prospective direction, a rain barrier is provided on the outdoor side, and a window barrier is provided on the indoor side.

The base 45 of the lower frame 42 of the inner skin 10B disposed on the upper side is provided with an inner protruding piece 87 that protrudes downward and extends in the left-right direction. A pair of inner projecting pieces 87 are provided apart from each other in the prospective direction. The inner projecting piece 87 of the lower frame 42 is fitted inside the outer projecting piece 86 of the upper frame 41.

As shown in FIG. 5, on the outdoor side of the curtain wall unit 10 adjacent in the vertical direction, the upper and lower outer skins 10A are not directly connected to each other, and are arranged on the upper frame 21 and the upper side of the outer skin 10A arranged on the lower side. The lower frame 22 of the outer skin 10 </ b> A is disposed with a gap S <b> 3 therebetween, and a splash barrier 96 is provided between the upper frame 21 and the lower frame 22.

Next, a construction method for attaching the curtain wall unit 10 to the frame B of the building A will be described. First, a unit assembly process is performed. That is, the upper end of the vertical frame 43 of the inner skin 10B, the upper end of the vertical frame 23 of the outer skin 10A, and the upper support member 6 are connected by the screw 61. Further, the lower end of the vertical frame 43 of the inner skin 10B, the lower end of the vertical frame 23 of the outer skin 10A, and the lower support member 7 are connected by screws 74. Thereby, the curtain wall unit 10 is assembled.

Next, an accessory installation process is performed. That is, the blind support portion 28 is attached to the indoor side of the upper frame 21, and the brand B is attached to the lower surface of the blind support portion 28. Further, the end of the grating plate G is fixed to the support plate portion 72 of the lower support member 7 with screws (not shown) or the like.

Next, a fixing process is performed. That is, the bracket 91 is fixed by the fastening bolt 91B at a position slightly above the upper part of the vertical frame 43 and the intermediate frame 44 of the inner skin 10B. Moreover, the horizontal part 93 of the fastener 92 is fixed to the plate P provided in the housing B of the building A with fastening bolts 93B. The bracket 91 is fixed to the vertical portion 94 of the fastener 92 with fastening bolts 94B.

Next, a unit connection process is performed. That is, another curtain wall unit 10 is attached adjacent to the left and right directions and above the curtain wall unit 10 attached to the building A as described above. When attaching adjacent to the left-right direction, the vertical frames 43 of the inner skin 10B are fitted. A splash barrier 96 is attached to the gap S3 without connecting the outer skins 10A. In the case of mounting adjacently upward, the lower frame 42 of the upper inner skin 10B is fitted into the upper frame 41 of the lower inner skin 10B. The outer skin 10A is not directly connected, but the splash barrier 96 is attached to the gap S3.

The curtain wall 1 thus configured includes an inner skin 10B, an outer skin 10A, and an upper support member 6 and a lower support member 7 that connect the inner skin 10B and the outer skin 10A. The curtain wall 1 is fixed to the outer peripheral part of the building A by a bracket 91 provided on the inner skin 10B. Thus, the unitized curtain wall 1 can be constructed in a short period of time.

Further, the inner skin 10B and the outer skin 10A are connected by an upper support member 6 and a lower support member 7 that are formed in a rod shape. Therefore, the space between the inner skin 10B and the outer skin 10A is not provided with the upper support member 6 and the lower support member 7, that is, through the communication space K1, the outer skin 10B and the outer skin 10A are externally connected. Air can flow in between, and air can flow out from between the inner skin 10B and the outer skin 10A (see arrow F shown in FIG. 3), and ventilation efficiency can be ensured.

Further, the inner skin 10B and the outer skin 10A are connected by an upper support member 6 and a lower support member 7 at the upper part and the lower part. Therefore, the inner skin 10B and the outer skin 10A can be easily connected, and the curtain wall unit 10 having high rigidity can be obtained.

Further, the upper inner glass 51 and the lower inner glass 53 are fixed to the frame body 2 through an airtight material 56. Therefore, the inner glass can be provided while the airtight material 56 prevents water from entering the indoor side and ensures watertightness.

Moreover, since the inner skin 10B has the board 52 arrange | positioned inside the frame 2 at the indoor side rather than the upper inner glass 51 and the lower inner glass 53, exposure of the outer peripheral part of the building A is carried out by the board 52. Can be suppressed. Furthermore, the fire-resistant performance of the building A can be ensured by adopting a fire-resistant material as the board 52.

The inner skin 10B has a waist portion 50A and a window portion 50B, and is disposed so as to overlap the outer skin 10A in a front view. A bracket 91 is fixed to the indoor side of the vertical frame 43 of the inner skin 10B. For this reason, it is not necessary to extend the support body for fixing the curtain wall unit 10 to the housing B from the housing B to the outdoor side, and the height of the inner skin 10B is increased, that is, the height of the inner skin 10B is set to the outer Can be set to the same height as the skin.

The outer skin 10A is supported on the inner skin 10B by the upper support member 6 and the lower support member 7, and a bracket 91 provided on the inner skin 10B is fixed to the housing B via a fastener 92. That is, the inner skin 10B fixed to the housing B is configured to support the outer skin 10A. Therefore, since the vertical frame 23 and the like of the outer skin 10A are not directly supported by the housing B, it is not necessary to ensure the strength by increasing the cross-sectional area of the vertical frame 23, and the compact design by reducing the expected dimension of the vertical frame 23. It can be.

Further, a mounting space S1 that is recessed toward the outdoor side is formed on the indoor side of the vertical frame 23 of the outer skin 10A, and ends of the upper support member 6 and the lower support member 7 are disposed in the mounting space S1. Therefore, when viewed from the outdoor side, the upper support material 6 and the lower support material 7 are hidden by the frame body 2 and cannot be seen, so that the appearance design can be improved.

Moreover, adjacent curtain wall units 10 are connected by connecting adjacent inner skins 10B. The adjacent outer skins 10 </ b> A are not connected to each other, and the splash barrier 96 is provided between the outer skins 10 </ b> A. Therefore, the splash barrier 96 can absorb vibration, clearance, and the like of the curtain wall unit 10.

Moreover, the installation period can be shortened by installing the brand B and the grating plate G in the curtain wall unit 10 in advance.

The various shapes and combinations of the constituent members shown in the above-described embodiments are merely examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

In the embodiment described above, the mounting space S1 is formed along the vertical direction of the vertical frames 23 and 43, but only the portion to which the upper support member 6 and the lower support member 7 are fixed, that is, the vertical frame 23. , 43 may be formed only at the upper and lower ends. Alternatively, the mounting space S1 is not formed in the vertical frames 23 and 43, and the upper support member 6 and the lower support member 7 are formed on the indoor side surface of the vertical frame 23 of the outer skin 10A and the vertical frame 43 of the inner skin 10B. The structure which connects the surface of the outdoor side may be sufficient. Furthermore, the upper support member 6 connects the upper frame 21 of the outer skin 10A and the upper frame 41 of the inner skin 10B, and the lower support member 7 connects the lower frame 22 of the outer skin 10A and the lower frame 42 of the inner skin 10B. The structure which connects may be sufficient. Further, in order to increase the rigidity of the curtain wall unit 10, a staggered member that obliquely connects the upper end (lower end) of the vertical frame 23 of the outer skin 10A and the lower end (upper end) of the vertical frame 43 of the inner skin 10B. May be provided.

In the embodiment described above, the curtain wall unit 10 is fixed at two locations in the vertical direction at the upper part of the beam B1 (see FIG. 4) and the lower part of the beam B1 (see FIG. 9) via the fastener 92. Although it is a structure, this invention is not restricted to this. For example, the structure fixed through the fastener 92 only in the upper part of the beam B1 may be sufficient. Moreover, in the curtain wall unit 10 provided in the blow-off portion or the curtain wall unit 10 having the long vertical frames 23 and 43, the fastener 92 may be fixed at three or more locations in the vertical direction.

Further, the curtain wall unit 10 is fixed to the housing B through fasteners 92 at two places in the left-right direction (the left end portion of the curtain wall unit 10 and the right end portion of the curtain wall unit 10). It is not limited to this. You may fix in three or more places in the left-right direction.

In the embodiment described above, the intermediate frame 44 is provided on the inner skin 10B. However, the present invention is not limited to this, and the intermediate frame 44 may be provided on the outer skin 10A.

DESCRIPTION OF SYMBOLS 1 ... Curtain wall (curtain wall installation structure) 1A ... Outer surface material 1B ... Inner surface material 2 ... Frame (outer side frame) 4 ... Frame (inner side frame) 6 ... Upper support material (connection member, upper part) 7) Lower support material (connection member, lower connection part) 10 Curtain wall unit 10A ... Outer skin 10B ... Inner skin 20 ... Frame 21 ... Upper frame 22 ... Lower frame 23 ... Vertical frame 30 ... Outer glass 36 ... Airtight material 41 ... Upper frame 42 ... Lower frame 43 ... Vertical frame 44 ... Intermediate frame 48 ... Condensation drain valve 50A ... Waist 50B ... Window 51 ... Upper inner glass (inner glass) 52 ... Board 53 ... Lower inner glass (inner glass) 56 ... Airtight material 91 ... Bracket (fixed part) 92 ... Fastener 96 ... Splash barrier (airtight material) C ... Brand (accompaniment) G ... Grating plate (accompaniment) P ... plates S1, S2 ... mounting space (recess) S3 ... gap K1 ... communication space

Claims (10)

A curtain wall unit attached to a housing, wherein the inner skin is disposed along the housing, an outer skin is disposed on the outdoor side of the inner skin, and the inner skin and the outer skin. A curtain wall unit, wherein the inner skin has a fixing part fixed to the housing. The communication space that communicates the space between the inner skin and the outer skin and the outside is formed by the plurality of connecting members, the outer peripheral end of the inner skin, and the outer peripheral end of the outer skin. The curtain wall unit according to 1. The said connection member has the upper connection part which connects the upper part of the said inner skin, and the upper part of the said outer skin, and the lower connection part which connects the lower part of the said inner skin, and the lower part of the said outer skin. Or the curtain wall unit of 2. The inner skin has an inner side frame and an inner glass disposed inside the inner side frame, and the inner glass is fixed to the inner side frame via an airtight material. The curtain wall unit according to any one of claims 1 to 3. 5. The curtain wall unit according to claim 4, wherein the inner skin includes a board disposed inside the inner side frame body on the indoor side of the inner glass. The curtain wall unit according to any one of claims 1 to 5, wherein the inner skin has a waist portion and a window portion, and is disposed so as to overlap the outer skin. The outer skin includes an outer side frame, and an outer glass disposed inside the outer side frame, and a packing material extending toward the prospective direction on the outdoor side of the outer side frame. The curtain wall unit according to any one of claims 1 to 6, wherein is arranged. A curtain wall installation structure in which the curtain wall unit according to any one of claims 1 to 7 is vertically and / or horizontally disposed adjacent to the casing, and the adjacent inner skins are connected to each other. The curtain wall installation structure, wherein the adjacent outer skins are arranged with a gap therebetween. A unit assembling step of assembling a curtain wall unit by connecting an inner skin arranged along the casing and an outer skin arranged on the outdoor side of the inner skin with a connecting member; and using the inner skin as the casing A method for constructing a curtain wall, comprising: a fixing step of fixing; and a unit connecting step of connecting the inner skins of adjacent curtain wall units. The curtain wall construction method according to claim 9, further comprising an accessory installation step of installing an accessory on the curtain wall unit after the unit assembly step and before the fixing step.

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