JP2024062623A - Curtain wall fixing structure - Google Patents

Abstract

[Problem] To provide a fixing structure for a curtain wall that is easy to install and manage, and can firmly fix a fastener to a building frame. [Solution] The structure comprises a building frame, and a fastener that is connected to a mullion, has a hole, and is fixed to the building frame by a bolt inserted into the hole. The fastener has a longer dimension in the width direction along the curtain wall surface than the dimension in the direction perpendicular to the wall surface, and is fixed to the building frame on both sides in the width direction, sandwiching the connection position of the mullion. [Selected drawing] Figure 2

Description

This disclosure relates to a fixing structure for curtain walls.

For example, when installing a curtain wall on the exterior of a mid- to high-rise building, fasteners are welded to the building's framework and the curtain wall's mullions are fixed to the fasteners. When welding fasteners to the framework, sparks are generated, so adequate fire safety measures must be taken. Welding work is highly specialized and requires qualifications, so it can only be performed by certain workers.

For example, as shown in Patent Document 1, by using high tension bolts made of high tensile steel, the curtain wall can be fixed to the building frame via fasteners with high joint strength.

JP 2016-216955 A

High tension bolts have great fixing strength, but are difficult to install and maintain. Ordinarily used bolts such as hexagonal bolts are easy to install and maintain, but do not have sufficient fixing strength.

This disclosure has been made in consideration of the above points, and aims to provide a curtain wall fixing structure that is easy to install and manage, and can firmly fix fasteners to the framework.

The first aspect of the present disclosure is a fixing structure for a curtain wall, comprising a building framework and a fastener that is connected to a upright and has a hole and is fixed to the framework using a bolt inserted through the hole, the fastener being longer in the width direction along the wall surface of the curtain wall than in the direction perpendicular to the wall surface, and being fixed to the framework on both sides of the connection position of the upright.

FIG. 3 is a vertical cross-sectional view showing the fixing structure of the curtain wall according to the first embodiment of the present disclosure, corresponding to the cross section of line AA in FIG. 2. 2 is a cross-sectional view taken along line BB in FIG. 1. FIG. 2 is a cross-sectional view of a first modified example of the fixing structure of the curtain wall of the first embodiment. FIG. 11 is a cross-sectional view of a second modified example of the fixing structure of the curtain wall of the first embodiment. FIG. 11 is a cross-sectional view of a third modified example of the fixing structure of the curtain wall of the first embodiment. FIG. 11 is a partial cross-sectional view showing a fixing structure of a curtain wall according to a second embodiment of the present disclosure. FIG. 7 is a partially enlarged view of FIG. 6 .

Below, an embodiment of the curtain wall fixing structure of the present disclosure will be described with reference to Figures 1 to 7. The following embodiment shows one aspect of the present disclosure, does not limit the disclosure, and can be modified as desired within the scope of the technical ideas of the present disclosure. In addition, in the following drawings, the scale and number of bolts in each structure are different from the actual structure in order to make each configuration easier to understand.

[First embodiment of the curtain wall fixing structure]
As shown in Figures 1 and 2, the curtain wall fixing structure 1 according to the first embodiment has a fastener 2, a fixing bracket 4, and a bolt 5. The fastener 2 is attached to a framework 3. The curtain wall 11 is attached to the fastener 2 via the fixing bracket 4. The curtain wall 11 has a surface material 10. The surface material 10 holds a surface material panel 14 made of glass, concrete, or the like inside a frame formed by framing a transom and a pair of left and right mullions 13 on all four sides.

In the following explanation, the direction perpendicular to the wall surface of the panel 10 in the curtain wall 11 is referred to as the indoor/outdoor direction. The horizontal direction along the wall surface of the curtain wall 11 and perpendicular to the indoor/outdoor direction is referred to as the width direction. In the drawings, the width direction is indicated by arrow X, the indoor/outdoor direction is indicated by arrow Y, and the up/down direction is indicated by arrow Z.

The structure 3 is an H-shaped steel. The structure 3 extends across the entire width of the building. The structure 3 has an upper flange 31A, a lower flange 31B, and a web 31C whose plate surfaces are oriented in a horizontal plane. The upper flange 31A and the lower flange 31B correspond to the flange portion. The upper flange 31A has a plurality of through holes 32. The through holes 32 are arranged at the positions of the bolts 5. The multiple through holes 32 have a circular cross section and each penetrate the upper flange 31A in the vertical direction. The bolts 5 are inserted into the through holes 32. Two through holes 32 are arranged with a gap between them in the width direction. The two through holes 32 are arranged symmetrically in the width direction with the upright 13 as the center.

The fixing bracket 4 has an attachment portion 51 and an adjustment bolt attachment portion 52. The attachment portion 51 is a rectangular flat plate extending in the vertical direction. The attachment portion 51 has an insertion hole 53 and an insertion hole 54. The insertion holes 53 and 54 penetrate the attachment portion 51 in the indoor/outdoor direction. The insertion holes 54 are arranged on both sides of the insertion hole 53 in the vertical direction. The attachment portion 51 is fixed to the upright 13 from the indoor side by inserting a bolt 41 that engages with the upright 13 into the insertion hole 54 and tightening a nut on the bolt 41. A bolt 40 is inserted into the insertion hole 53 from the outdoor side.

The adjustment bolt mounting portion 52 extends from the upper end of the mounting portion 51 to the indoor side. The adjustment bolt mounting portion 52 has an insertion hole 55, a storage groove 56, and an adjustment nut 43. The insertion hole 55 is located at the center of the adjustment bolt mounting portion 52 in the indoor/outdoor direction. The insertion hole 55 has a circular cross section and penetrates the adjustment bolt mounting portion 52 in the vertical direction. The adjustment bolt 42 is inserted into the insertion hole 55 from above. The storage groove 56 is provided halfway up and down in the insertion hole 55. The storage groove 56 is a groove with a rectangular cross section perpendicular to the width direction and open at both ends in the width direction. The center axis of the storage groove 56 extending in the width direction is perpendicular to the center axis of the insertion hole 55. The adjustment nut 43 is stored in the storage groove 56. The adjustment nut 43 is non-rotatably attached to the adjustment bolt attachment portion 52 by fitting two parallel sides into the wall surface of the accommodation groove 56. The male thread portion of the adjustment bolt 42 is screwed into the female thread portion of the adjustment nut 43.

The fastener 2 is a metal fitting with an L-shaped cross section perpendicular to the width direction. When viewed from above, the fastener 2 has a longer width dimension than the indoor/outdoor dimension. The fastener 2 has an upright fixing piece 21 and a frame fixing piece 22. The upright fixing piece 21 is a rectangular flat plate extending in the vertical direction. The upright fixing piece 21 has a loose hole 21a that penetrates in the indoor/outdoor direction. The loose hole 21a extends in the vertical direction. A bolt 40 is inserted into the loose hole 21a from the outdoor side. The upright fixing piece 21 is connected to the upright 13 from the indoor side by inserting the bolt 40 into the loose hole 21a and tightening a nut on the bolt 40.

The frame fixing piece 22 has a rectangular flat plate-like surface. The frame fixing piece 22 protrudes from the lower edge of the upright fixing piece 21 toward the indoor side with the plate surface in a horizontal plane. The frame fixing piece 22 has a long hole portion 23. The long hole portion 23 corresponds to the hole portion. The long hole portion 23 penetrates the frame fixing piece 22 in the vertical direction. The long hole portion 23 extends in the width direction. The long hole portion 23 has a semicircular arc portion 23a at both ends in the width direction. The dimension of the long hole portion 23 in the indoor/outdoor direction is larger than the diameter of the bolt 5. The bolt 5 is inserted into the long hole portion 23. Two long hole portions 23 are arranged side by side with a gap in the width direction. The long hole portions 23 are arranged on both sides separated in the width direction by the position of the bolt 40 that is the connection position of the upright 13. The two long holes 23 are located at the same position in the indoor/outdoor direction. The long holes 23 are arranged symmetrically about the center of the width of the body fixing piece 22. The long holes 23 are arranged away from the area where the mullions 13 are connected in the width direction of the fastener 2.

The position of the long hole portion 23 in the indoor/outdoor direction is the same as the position of the through hole 32 in the structure 3. When the structure fixing piece 22 is installed on the upper flange 31A, the long hole portion 23 communicates with the through hole 32 in the vertical direction. A bolt 5 is inserted from above into the long hole portion 23 and the through hole 32, which communicate in the vertical direction, and a nut is fastened to the bolt 5, thereby fixing the structure fixing piece 22 to the structure 3 from above.

The bolt 5 is a hexagonal bolt. By using a hexagonal bolt for the bolt 5, the construction and maintenance work that occurs when a high tension bolt is used can be reduced. In order to increase the joint strength between the fastener 2 and the structure 3, the bolt 5 is preferably M12 or more. The fastener 2 having the structure fixing piece 22 can be moved in the width direction relative to the bolt 5 inserted into the through hole 32 before being fastened with a nut. By moving the fastener 2 connected to the upright 13 in the width direction, the widthwise positions of the curtain wall 11 and the structure 3 can be adjusted.

The construction method of the curtain wall 11 configured as above includes arranging fasteners 2 having elongated hole portions 23, which are holes through which bolts 5 are inserted, extending in the width direction along the wall surface of the curtain wall 11 on a structure 3 having a plurality of through holes 32 in the upper flange 31A, each having a circular cross section and through which bolts 5 can be inserted; provisionally fixing the fasteners 2 to the structure 3 using bolts 5 inserted through the elongated hole portions 23 and the through holes 32 facing the elongated hole portions 23; connecting uprights 13 to the fasteners 2; and permanently fixing the fasteners 2 connected to the uprights 13 to the structure 3 using the bolts 5.

A fastener 2 having a long hole portion 23 is placed on a structure 3 having an H-shaped steel with multiple through holes 32 formed in the upper flange 31A before connecting the upright 13 to the fastener 2. The fastener 2 is provisionally fixed to the structure 3 using a bolt 5 inserted through the long hole portion 23 and the through hole 32 facing the long hole portion 23 by installing the fastener 2 according to the widthwise position where the upright 13 is to be placed relative to the structure 3, inserting the bolt 5 from above through the long hole portion 23 in the fastener 2 and the through hole 32 that overlaps with the long hole portion 23 in the vertical direction, and loosely tightening a nut on the bolt 41 to provisionally fix the fastener 2 to the structure 3.

After the fastener 2 is provisionally fixed to the body 3, the upright 13 is connected to the fastener 2. To connect the upright 13 to the fastener 2, the bolt 40 is inserted from the outside into the insertion hole 53 in the fixing bracket 4 and the loose hole 21a in the fastener 2, and a nut is fastened to the bolt 40. By fastening the nut to the bolt 40, the upright 13 is connected to the fastener 2 via the fixing bracket 4.

After connecting the uprights 13 to the fasteners 2, the fasteners 2 connected to the uprights 13 are moved along the long hole portions 23 relative to the bolts 5 to adjust the widthwise position of the fasteners 2. Since the fasteners 2 are only temporarily fixed to the structure 3, the widthwise position of the fasteners 2 relative to the bolts 5 and the structure 3 can be easily fine-tuned. By fine-tuning the widthwise position of the fasteners 2, the widthwise position of the uprights 13 relative to the bolts 5 and the structure 3 can be fine-tuned. After fine-tuning the widthwise position of the uprights 13 via the fasteners 2, the fasteners 2 with their widthwise position adjusted are permanently fixed to the structure 3 by tightening nuts on the bolts 5. By permanently fixing the fasteners 2 to the structure 3, the curtain wall 11 including the uprights 13 is installed at the adjusted widthwise position on the structure 3.

When using the curtain wall fixing structure 1 and construction method of the embodiment, the bolts 5 are hexagonal bolts, so the fasteners 2 can be joined to the structure 3 by tightening nuts onto the bolts 5, making construction and management easier. The fasteners 2 are joined to the structure 3 by tightening nuts onto the bolts 5, so the reduction in strength of the structure 3 that occurs when welding is performed can be suppressed.

When the embodiment of the curtain wall fixing structure 1 and construction method is used, the fastener 2 has a larger width dimension than its indoor/outdoor dimension, so the fastener 2 comes into contact with the structure 3 over a large area in the width direction. The large contact area between the fastener 2 and the structure 3 increases the frictional force between the fastener 2 and the structure 3 when the nut is tightened onto the bolt 5, and the joint strength between the fastener 2 and the structure 3 can be increased without using welding, for example. Even when a large load is applied to the mullion 13 through the curtain wall 11 due to wind pressure or the like, the position of the curtain wall 11 relative to the structure 3 can be prevented from shifting.

When the curtain wall fixing structure 1 and construction method of the embodiment are used, the fasteners 2 are fixed to the structure 3 on both sides separated in the width direction by the connection position of the uprights 13, so that the area of the fasteners 2 that receives wind pressure, etc. through the uprights 13 is in the middle of the fixing points by the bolts 5, making it difficult for a rotational moment to be applied and enabling the fasteners 2 and the structure 3 to be firmly fixed. By making the width dimension of the fasteners 2 longer than the indoor/outdoor dimension, it is possible to place the fixing points farther apart in the width direction, further improving moment resistance.

When the embodiment of the curtain wall fixing structure 1 and construction method is used, the fastener 2 connecting the upright 13 can be moved along the long hole portion 23 relative to the bolt 5 to easily adjust the widthwise position of the fastener 2 and the upright 13. When the embodiment of the curtain wall fixing structure 1 and construction method is used, the long hole portion 23 is not provided in the area of the fastener 2 that receives wind pressure, etc., so that the cross-sectional performance of the fastener 2 at the location that receives wind pressure, etc. is improved, and the strength of the fastener 2 itself can be improved.

[First Modification of the First Embodiment]
In the above embodiment, the fastener 2 has one bolt 5 and one long hole 23 disposed on each side separated in the width direction across the connection position of the mullion 13. As shown in Fig. 3, in the first modified example, the fastener 2 is fixed to the frame 3 using a plurality of bolts 5 inserted into each of the long hole portions 23. In the first modified example, two bolts 5 are inserted into each of the long hole portions 23 at both ends in the width direction of the long hole portion 23, and the fastener 2 and the frame 3 are fixed using a total of four bolts 5. A total of four through holes 32 are formed in the upper flange 31A at positions facing the bolts 5 in the up-down direction.

When the fixing structure of the first modification is used, the joint strength is improved compared to when two bolts 5 are used, and the fastener 2 and the body 3 can be fixed more firmly. In the fastener 2, the distance between the bolts 5 inserted at the furthest positions in the width direction is longer, so the moment resistance can be further improved. Three or more bolts 5 may be inserted into each of the long hole portions 23.

[Second Modification of First Embodiment]
As shown in Fig. 4, in the second modified example, multiple long hole sections 23 are arranged on both sides separated in the width direction across the connection position of the mullions 13, and are spaced apart in the indoor-outdoor direction. In the second modified example, the long hole sections 23 are arranged in two rows in the indoor-outdoor direction. The fasteners 2 are fixed to the main body 3 using multiple bolts 5 inserted into each of the total of four long hole sections 23. The bolts 5 are inserted into each of the long hole sections 23, and the fasteners 2 and the main body 3 are fixed using a total of four bolts 5. A total of four through holes 32 are formed in the upper flange 31A at positions facing the bolts 5 in the vertical direction.

When the fixing structure of the second modified example is used, the joint strength is improved compared to when two bolts 5 are used, and the fastener 2 and the structure 3 can be fixed more firmly. The fastener 2 and the structure 3 are fixed using the bolts 5 inserted at positions spaced apart in the indoor/outdoor direction in the fastener 2, so moment resistance can be further improved.

In the fixing structure of the second modified example, as in the first modified example, two bolts 5 may be inserted into each of the long hole portions 23 at both ends in the width direction of the long hole portions 23, and a total of eight bolts 5 may be used to fix the fastener 2 and the body 3. By fixing the fastener 2 and the body 3 using a total of eight bolts 5, a stronger fixation can be achieved.

[Third Modification of First Embodiment]
As shown in FIG. 5, in the third modified example, four long hole portions 23 and one hole portion 23A are formed in the fastener 2. The long hole portions 23 are arranged at four positions on both sides separated in the width direction across the connection position of the upright 13 and at a position separated in the indoor/outdoor direction. The hole portion 23A is circular in a plan view. The hole portion 23A is arranged at the connection position of the upright 13 in the width direction and at a position in the middle of the long hole portion 23 separated in the indoor/outdoor direction in the indoor/outdoor direction. The fastener 2 is fixed to the frame 3 using five bolts 5 inserted into each of the four long hole portions 23 and one hole portion 23A. A total of five through holes 32 are formed in the upper flange 31A at positions facing the bolts 5 in the vertical direction.

When the fixing structure of the third modified example is used, the joint strength is improved compared to when two bolts 5 are used, and the fastener 2 and the structure 3 can be fixed more firmly. The fastener 2 and the structure 3 are fixed using the bolts 5 inserted at positions spaced apart in the indoor/outdoor direction in the fastener 2, so moment resistance can be further improved.

In the fixing structure of the third modified example, as in the first modified example, two bolts 5 may be inserted into each of the long hole portions 23 at both ends in the width direction of the long hole portions 23, and a total of nine bolts 5 may be used to fix the fastener 2 and the body 3. By fixing the fastener 2 and the body 3 using a total of nine bolts 5, a more solid fixation can be achieved.

[Second embodiment of the curtain wall fixing structure]
As shown in Fig. 6, the curtain wall fixing structure 1 has an adhesive 44 that bonds the fastener 2 and the skeleton 3. The adhesive 44 has a first adhesive 45 and a second adhesive 46.

As shown in Figures 6 and 7, the first adhesive 45 is provided along the direction in which each outer peripheral end extends at the corners 61, 62, and 63 formed by the outer peripheral ends 241, 242, and 243 of the body fixing piece 22 and the upper surface 311 of the upper flange 31A of the body 3.

The first adhesive 45 is applied to both the outer peripheral ends 241, 242, and 243 of the frame fixing piece 22 and the upper surface 311 of the upper flange 31A. The corners 61, 62, and 63 are each a right angle. The corner 61 formed by the first outer peripheral end 241 of the frame fixing piece 22 and the upper surface 311 of the upper flange 31A is referred to as the first corner 61. The corner formed by the second outer peripheral end 242 of the frame fixing piece 22 and the upper surface 311 of the upper flange 31A is referred to as the second corner 62. The corner formed by the third outer peripheral end 243 of the frame fixing piece 22 and the upper surface 311 of the upper flange 31A is referred to as the third corner 63.

The second adhesive 46 is applied to a fourth corner 64 formed by the outdoor end face 312 of the upper flange 31A and the underside 221 of the frame fixing piece 22, along the direction in which the outdoor end face 312 of the upper flange 31A extends. The fourth corner 64 is a right angle. The second adhesive 46 is applied to both the outdoor end face 312 of the upper flange 31A and the underside 221 of the frame fixing piece 22.

The first adhesive 45 and the second adhesive 46 are, for example, two-component adhesives that harden under room temperature conditions. Angle iron 430 is provided on the surface of the first adhesive 45 and the second adhesive 46. The angle iron 430 is a piece-shaped member that extends linearly and has an L-shaped cross section. The angle iron 430 provided at the first corner 61, the angle iron 430 provided at the second corner 62, and the angle iron 430 provided at the third corner 63 are separate pieces and are not integrated. One piece of the L-shaped cross section of the angle iron 430 is referred to as the first piece 431, and the other piece is referred to as the second piece 432. The first piece 431 and the second piece 432 have the same plate surface shape and plate thickness. The first piece 431 and the second piece 432 form an angle of 90°. The angle iron 430 is made of, for example, steel, aluminum alloy, stainless steel, or the like. The surface of the first piece 431 of the angle iron 430 opposite the side to which the second piece 432 is connected, and the surface of the second piece 432 opposite the side to which the first piece 431 is connected, are referred to as the outer surface 433.

The angle member 430 on the surface of the first adhesive 45 is oriented such that the plate surface of one of the first and second pieces 431 and 432 is a vertical plane facing the indoor/outdoor direction, and the other protrudes from the lower edge of the other piece to the indoor side. In this embodiment, the first piece 431 is one piece, and the second piece 432 is the other piece. The first piece 431 faces the first outer peripheral end 241 of the frame fixing piece 22 in the indoor/outdoor direction via the first adhesive 45. The second piece 432 faces the upper surface 311 of the upper flange 31A from above via the first adhesive 45. The corner formed by the first piece 431 and the second piece 432 of the angle member 430 presses the first adhesive 45 against the first outer peripheral end 241 and the upper surface 311 of the upper flange 31A. The angle member 430 covers the entire surface of the first adhesive 45 provided at the first corner 61 over the entire width direction.

The angle iron 430 provided at the second corner 62 and the third corner 63 is oriented such that the plate surface of one of the first and second pieces 431 and 432 is a vertical plane facing the width direction, and the other protrudes in the width direction from the lower edge of the other piece. In this embodiment, the first piece 431 is one piece, and the second piece 432 is the other piece. The first piece 431 faces the second outer peripheral end 242 and the third outer peripheral end 243 of the frame fixing piece 22 via the first adhesive 45. The second piece 432 faces the lower surface 221 of the frame fixing piece 22 via the first adhesive 45. The corner formed by the first piece 431 and the second piece 432 of the angle iron 430 presses the first adhesive 45 against the second outer peripheral end 242, the third outer peripheral end 243, and the lower surface 221 of the frame fixing piece 22. The angle iron 430 covers the entire surface of the first adhesive 45 across the entire width. It covers the entire surface of the first adhesive 45 provided at the second corner 62 and the third corner 63 across the entire indoor/outdoor direction.

When the angle iron 430 is provided on the surface, the first adhesive 45 is pressed against the outer surface 433 of the angle iron 430. The cross-sectional shape of the first adhesive 45 is approximately L-shaped. The first adhesive 45 is adhered to both the fastener 2 and the main body 3 even when the angle iron 430 is provided on the surface.

The angle bar 430 provided at the fourth corner 64 is oriented such that the plate surface of one of the first and second pieces 431 and 432 is a vertical plane facing the indoor/outdoor direction, and one piece protrudes from the lower edge of the other piece to the outdoor side. In this embodiment, the first piece 431 is one piece, and the second piece 432 is the other piece. The first piece 431 faces the outdoor end surface 312 of the upper flange 31A via the second adhesive 46. The second piece 432 faces the lower surface 221 of the frame fixing piece 22 of the fastener 2 via the second adhesive 46. The angle bar 430 covers the surface of the second adhesive 46 over the entire width direction.

The method for fastening the curtain wall is explained below. The fastener 2's structural fixing piece 22 is placed on top of the upper flange 31A of the structural body 3. The fastener 2 and structural body 3 are joined with bolts 5.

At the corners 61, 62, 63 formed by the outer ends 241, 242, 243 of the fastener 2's frame fixing piece 22 and the upper surface 311 of the upper flange 31A, a first adhesive 45 is provided along the direction in which the outer ends 241, 242, 243 of the frame fixing piece 22 extend. An angle bar 430 is provided on the surface of the first adhesive 45. At the fourth corner 64 formed by the outdoor end face 312 of the upper flange 31A and the lower surface 221 of the frame fixing piece 22, a second adhesive 46 is provided along the direction in which the outdoor end face 312 of the upper flange 31A extends. An angle bar 430 is provided on the surface of the second adhesive 46. The first adhesive 45 and the second adhesive 46 are hardened to fix the frame fixing piece 22 and the upper flange 31A. The fastener 2 is fixed to the frame 3, and the curtain wall 11 is fixed to the frame 3 of the building.

In the curtain wall fixing structure 1, the fastener 2 is adhered to the structure 3 with adhesive 44 and bolted. This allows the fastener 2 and structure 3 to be fixed more firmly. By bolting the fastener 2 to the structure 3 before adhering the fastener 2 to the structure 3 with the first adhesive 45, the fastener 2 can be easily adhered to the structure 3 without shifting in position when adhering the fastener 2 to the structure 3 with adhesive 44.

In the curtain wall fixing structure 1, an angle member 430 is provided on the surface of the first adhesive 45 and the second adhesive 46. The first adhesive 45 is pressed against the outer surface 433 of the angle member 430, so that it adheres uniformly and over a wide area to the outer peripheral ends 241, 242, 243 of the structural body fixing piece 22 and the upper surface 311 of the upper flange 31A of the structural body 3. The second adhesive 46 is pressed against the outer surface 433 of the angle member 430, so that it adheres uniformly and over a wide area to the lower surface 221 of the structural body fixing piece 22 and the end surface 312 of the upper flange 31A.

In the curtain wall fixing structure 1, the first adhesive 45 and the second adhesive 46 are two-part adhesives that harden in a room temperature environment. The fastener 2 can be bonded to the structure 3 without using heat, and there is no need for a device or power source for bonding the first adhesive 45 and the second adhesive 46.

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

In the third modified example of the first embodiment, a configuration in which the fastener 2 has a circular hole 23A in plan view is exemplified, but this configuration is not limited to this. The hole 23A may be formed as an elongated hole extending in the projection direction. By forming the hole 23A as an elongated hole, it becomes possible to insert multiple bolts 5 spaced apart in the projection direction through the hole 23A to fix the fastener 2 and the body 3, thereby achieving an even stronger fixation.

In the first embodiment, a configuration in which two long hole portions 23 are arranged at a distance in the width direction on either side of the connection position of the uprights 13 is exemplified, but this configuration is not limited to this. A single long hole portion 23 may be provided that connects the long hole portions 23 on both sides in the width direction. When a single long hole portion 23 is provided that connects the long hole portions 23 on both sides in the width direction, it becomes possible to increase the number of bolts 5 that can be inserted into the long hole portions 23, and the fasteners 2 and the main body 3 can be fixed even more firmly.

1...Curtain wall fixing structure, 2...Fastener, 3...Frame, 5...Bolt, 11...Curtain wall, 13...Mulliner, 23...Slotted hole, 23A...Hole, 44...Adhesive

Claims (6)

The structure of the building and
a fastener connected to the upright and having a hole and fixed to the frame using a bolt inserted through the hole;
Equipped with
The fastener is
The dimension of the curtain wall in the width direction along the wall surface is longer than the dimension in the direction perpendicular to the wall surface, and
A curtain wall fixing structure that is fixed to the main body on both sides in the width direction, sandwiching the connection position of the uprights. The holes are arranged apart from each other in the width direction, and each hole is an elongated hole extending in the width direction.
The curtain wall fixing structure according to claim 1. The fastener is fixed to the body using a plurality of bolts inserted into each of the long hole portions.
The curtain wall fixing structure according to claim 2. The fastener is
The hole portion is provided in a plurality of directions perpendicular to the wall surface,
The unit is fixed to the frame using a plurality of bolts inserted through a plurality of the holes arranged in the indoor/outdoor direction.
A fixing structure for a curtain wall according to any one of claims 1 to 3. An adhesive is provided to bond the fastener and the body.
A fixing structure for a curtain wall according to any one of claims 1 to 3. The bolt is a hexagonal bolt of M12 or more.
A fixing structure for a curtain wall according to any one of claims 1 to 3.

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