Curtain wall support structure

Abstract

To provide a support structure for a curtain wall that can eliminate the risk of the center side of the lower frame part of the curtain wall dropping. [Solution] This curtain wall support structure supports a curtain wall having opening facilities, and includes a support member 1. The support member 1 has one end 11 and the other end 12. The one end 11 is fixed to the upper flange 21 of a building beam 2 with a fastening member B1. The other end 12 protrudes outside beyond the upper flange 21, and supports the center of the lower frame portion 3 of the curtain wall.

Description

[Technical Field]

[0001] The present invention relates to a supporting structure for supporting a curtain wall. [Background technology]

[0002] In curtain walls with openings such as sashes, the weight of the sashes has been increasing in recent years due to the demand for improved thermal insulation performance. When the sashes are open, the weight concentration can cause the central part of the lower frame of the curtain wall to sag, potentially leading to poor installation. In the case of a casement window, the presence of a facing material at the bottom of the window results in a highly rigid structure. However, as shown in Figure 8, in the case of a sliding window 101, the curtain wall 102 consists only of a frame 1020. If the frame rigidity is insufficient, the problem of the central part of the lower frame 1021 sagging, as described above, is likely to occur, affecting the quality of the installation. As shown in Figure 9, the sagging of the central part occurs when the outdoor vertical surface 1021b sags relative to the indoor vertical surface 1021a of the U-shaped lower frame 1021. In this conventional example, the curtain wall 102 is fixed to the building by fasteners 6 that are fixed to the upper flange 21 of the building's beam 2, with the lower frame 1021 being fixed to the upper flange 21 of the building. The fasteners 6 are disposed at two locations, one at each of the left and right end positions of the lower frame portion 1021, and one at the center approximately 910 mm away from the end positions.

[0003] Patent Document 1 discloses a curtain wall mounting hardware and curtain wall mounting structure that have good adhesion to the curtain wall, can use ordinary nuts, and can easily follow the inter-story displacement of the curtain wall. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-88717 [Overview of the Initiative] [Problem to be solved by the invention]

[0005] However, the structure disclosed in Patent Document 1 cannot solve the problem of the central part of the lower frame of the curtain wall sagging.

[0006] An object of the present invention is to provide a support structure for a curtain wall that can eliminate the risk of the center of the lower frame part of the curtain wall sagging due to heavy opening equipment. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the curtain wall support structure of this invention is a support structure for a curtain wall having opening facilities, characterized in that it is provided with a support member whose one end is fixed to a beam of a building and whose other end protrudes outside beyond the beam to support the center of the lower frame part of the curtain wall.

[0008] With the above configuration, the lower frame portion of the curtain wall is supported from below by the other end side of the support member, so that even in cases where a bay window is provided as an opening facility, the central side of the lower frame portion of the curtain wall can be prevented from sagging.

[0009] The one end of the support member may be fixed to the top end of the beam, and a contact surface may be formed on the lower side of the support member to come into contact with the outdoor vertical surface of the beam. In this way, downward rotation of the other end protruding beyond the beam due to the load of the curtain wall is suppressed by the contact surface coming into contact with the outdoor vertical surface of the beam, thereby making it possible to reduce downward displacement of the lower frame section.

[0010] The support member may include side rib plates on both sides thereof, which reinforce the support member and prevent deformation of the support member when supporting the lower frame portion.

[0011] The above-mentioned contact surface may be formed on the side rib plate. This would facilitate the process of forming the contact surface.

[0012] The other end of the support member may be provided with an adjustment part that pushes up and adjusts the lower surface of the lower frame portion of the curtain wall. This allows the lower frame portion to be supported even if a gap occurs between the other end and the lower surface of the lower frame portion when the curtain wall is installed due to processing errors or the like.

[0013] The adjustment section may consist of a plate member located below the lower frame section, a vertical female screw portion formed on the plate member, and a male screw member screwed into the vertical female screw portion.

[0014] The support member described above has a vertical plate portion extending vertically between the one end and the other end, and the vertical surface portion of the lower frame portion may be fixed to this vertical plate portion by a fastening member. In this case, the support member also serves as a fastener for attaching the curtain wall to the building, thereby reducing the number of parts.

[0015] The vertical plate portion described above may consist of one end of an angle steel material, with the other end of the angle steel material forming the one end. This allows for cost reduction of the support member using existing angle steel materials. [Effects of the Invention]

[0016] With this invention, even when a curtain wall is equipped with a weighted opening, it is possible to suppress the sagging of the central part of the lower frame of the curtain wall. [Brief explanation of the drawings]

[0017] [Figure 1] This is an explanatory diagram showing the under-support structure of a curtain wall according to an embodiment. [Figure 2]1 is a plan view, a front view, and a side view of a support member used in the supporting structure of a curtain wall of an embodiment. [Figure 3] FIG. 1 is a schematic perspective view showing a supporting structure for a curtain wall according to an embodiment. [Figure 4] FIG. 10 is an explanatory diagram showing the arrangement of support members in the supporting structure of the curtain wall of the embodiment. [Figure 5] 10A and 10B are a plan view and a front view of a modified example of a support member used in the supporting structure of the curtain wall of the embodiment. [Figure 6] FIG. 10 is an explanatory diagram showing a supporting structure of a curtain wall according to another embodiment. [Figure 7] FIG. 10 is an explanatory diagram showing the arrangement of support members in a curtain wall supporting structure of another embodiment. [Figure 8] FIG. 10 is a diagram showing a conventional example, illustrating in an exaggerated manner frame deformation due to the weight of the opening equipment in the curtain wall. [Figure 9] FIG. 1 is a diagram showing a conventional example, and is an explanatory diagram showing a mounting structure of a curtain wall. DETAILED DESCRIPTION OF THE INVENTION

[0018] (Embodiment 1) Embodiments of this invention will be described below with reference to the attached drawings. The support structure of the embodiment supports a curtain wall equipped with a sliding window as an opening. This support structure includes a support member 1, as shown in Figures 1, 2, and 3.

[0019] One end 11 of the support member 1 is located on the upper flange 21 (top) of the building beam 2, which is made of H-shaped steel, and is fixed to the upper flange 21 by a fastening member B1. The other end 12 of the support member 1 protrudes outward from the beam 2 and supports the lower surface of the central side of the lower frame portion 3, which has a U-shaped cross-section in the curtain wall. The tip of the other end 12 of the support member 1 is located below the outdoor end of the lower frame portion 3. A rail portion 31 for running the sliding window sash is fixed to the lower frame portion 3 by screws S.

[0020] The support member 1 has a vertical plate portion 13 extending vertically between one end side 11 and the other end side 12, and the indoor vertical surface portion of the lower frame portion 3 is fixed to this vertical plate portion 13 with fastening members B2. That is, the support member 1 of this embodiment also serves as a fastener for attaching the curtain wall to the building. In addition, in this support structure, as shown in Figure 4, conventionally used fasteners 6 are arranged at both left and right end positions of the lower frame portion 3 of the curtain wall, and the support member 1 is arranged in two central positions approximately 910 mm apart from each of the end positions.

[0021] The vertical plate portion 13 described above consists of one end of the angle steel material A, and the other end of this angle steel material A forms the one end side 11 described above, and the fastening member B1 described above is inserted through the hole 11a formed in this other end.

[0022] The support member 1 also has side rib plates 14 located spaced apart on both sides of the support member 1. In this example, the side rib plates 14 are joined by welding to each edge of an angle iron A cut to a width of approximately 80 mm. Each side rib plate 14 has a first inclined portion 14a extending from the tip end of one of the angles A to the tip end of the other of the angles A, a horizontal portion 14b protruding toward the outdoor side from approximately the middle of the height of one of the sides (vertical plate portion 13), and a second inclined portion 14c extending from the outdoor end of the horizontal portion 14b toward the upper flange 21.

[0023] The horizontal pieces 14b of the two side rib plates 14 contact the lower surface of the lower frame portion 3 as the other end side 12.

[0024] Furthermore, a contact surface 14d is formed at the end of the second inclined portion 14c, which contacts the exterior-facing vertical surface (end grain) of the upper flange 21 of the beam 2. In FIG. 1, the dashed-dotted line L1, which indicates the support inclination when the contact surface 14d is formed, is slightly closer to vertical than the dashed-dotted line L2, which indicates the support inclination when the contact surface 14d is not formed. This dashed-dotted line L1 therefore supports the upper flange 21 from below. In other words, when the support inclination is aligned with the dashed-dotted line L1, downward rotation of the other end 12 of the support member 1 due to the load of the curtain wall is less likely to occur. As shown by the two-dot-dotted line in FIG. 1, by further extending the exterior-facing vertical surface of the upper flange 21 and further increasing the longitudinal length of the contact surface 14d, the lower frame section 3 can be supported from below at an angle closer to vertical. The above-mentioned two-dot chain line portion will be arranged so as not to interfere with the balcony components.

[0025] With the above-described support structure, the other end 12 of the support member 1 supports the central side of the lower frame portion 3 of the curtain wall, so even when a sliding window is provided, it is possible to prevent the central side of the lower frame portion 3 from sagging.

[0026] In a structure where the vertical surface of the lower frame portion 3 is fixed to the vertical plate portion 13 of the support member 1 by the fastening member B2, the support member 1 also serves as a fastener for attaching the curtain wall to the building, thereby reducing the number of parts.

[0027] If the vertical plate portion 13 is made from one end of the angle steel material A, and the other end of the angle steel material A forms one end 11, then the cost of the support member 1 can be reduced by utilizing the existing angle steel material A.

[0028] When the support member 1 has the contact surface 14d, downward rotation of the other end 12 of the support member 1, which occurs when the other end 12 receives the load of the curtain wall, is prevented by the contact surface 14d coming into contact with the outdoor vertical surface of the upper flange 21. In other words, it is possible to prevent downward rotation of the other end 12 and reduce downward displacement of the lower frame section 3. In other words, it is possible to reduce downward displacement of the lower frame section 3 without increasing the thickness of the plates that make up the support member 1 too much.

[0029] When the support member 1 is provided with the side rib plates 14, the support member 1 can be reinforced by the side rib plates 14, and deformation of the support member 1 when supporting the lower frame portion 3 from below can be prevented.

[0030] When the contact surface portion 14d is formed on the side rib plate 14, the process of forming this contact surface portion 14d becomes easier.

[0031] As shown in Fig. 5, the support member 1 may be provided with an adjustment unit 15 on the other end side 12. The adjustment unit 15 is configured to push up and adjust the lower surface of the lower frame portion 3 of the curtain wall. For example, the adjustment unit 15 may include a plate member 15a located below the lower frame portion 3, a vertical female screw portion 15b formed on the plate member 15a, and a male screw member 15c screwed into the vertical female screw portion 15b. By including such an adjustment unit 15, even if a gap occurs between the other end side 12 and the lower surface of the lower frame portion 3 due to processing errors or the like during installation of the curtain wall, the lower frame portion 3 can be supported by adjustment using the adjustment unit 15 (by turning the male screw member 15c).

[0032] (Embodiment 2) Next, a support structure according to another embodiment will be described with reference to the drawings. Components similar to those in the first embodiment are designated by the same reference numerals and will not be described again. As shown in FIGS. 6 and 7 , the support structure according to this embodiment includes a support member 1A dedicated to support, while the lower frame portion 3 is attached to the central beam 2 using conventional fasteners 6. The fasteners 6 are located at two positions: one at each end of the lower frame portion 3 of the curtain wall, and the other at a central position approximately 910 mm from the end positions. Two support members 1A are located adjacent to the two central fasteners 6. Fastener insertion holes for the support member 1A located at the central position are formed in the upper flange 21, and the support member 1A is fixed to the upper flange 21 by fasteners B3 inserted through the fastener insertion holes.

[0033] The support member 1A is formed by welding side rib plates 14A to both sides of a multi-angle Z (Z-shaped steel) cut to a width of about 80 mm. The side rib plates 14A have a substantially parallelogram shape.

[0034] In a support structure using such support member 1A, a process is required in which fastening member insertion holes for support member 1A are formed in advance in upper flange 21. However, as in embodiment 1, the other end 12 of support member 1 supports the center side of the lower frame section 3 of the curtain wall, so that even when the above-mentioned bay window is provided, the center side of the lower frame section 3 can be prevented from sagging. Furthermore, if support member 1A is provided with side rib plates 14A, these side rib plates 14A can reinforce support member 1A, preventing deformation of support member 1 when supporting the lower frame section 3. Note that support member 1A may be located in a single location in the center of lower frame section 3.

[0035] Furthermore, the support member 1A may also have a contact surface that contacts the outdoor-side vertical surface of the upper flange 21 of the beam 2. This contact surface may also be formed on the side rib plate 14A. In addition, the support member 1A may also be equipped with an adjustment part that pushes up and adjusts the lower surface of the lower frame portion 3 of the curtain wall.

[0036] Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiments within the same scope as the present invention or within an equivalent scope. [Explanation of symbols]

[0037] 1: Support member 1A: Support member 2:Beam 3: Lower frame section 6: Zipper 11: One end side 11a: Hole 12:Other end side 13: Vertical board section 14: Side rib plate 14A: Side rib plate 14a: 1st slope 14b:Horizontal piece 14c: 2nd slope part 14d: Contact surface part 15:Adjustment section 15a: Plate member 15b: Vertical female thread section 15c: Male screw component 21: Upper flange 31: Rail section A: Angle steel B1: Fastening member B2: Fastening member B3: Fastening member L1: dash-dotted line L2: dash-dot line S: Bis Z: Multi-angle

Claims

1. A support structure for a curtain wall having an opening facility, characterized in that it comprises a support member whose one end is fixed to a beam of a building and whose other end protrudes outside beyond the beam to support the center of the lower frame portion of the curtain wall.

2. In the curtain wall support structure described in claim 1, the one end side of the support member is fixed to the top end of the beam, and a contact surface portion is formed on the lower side of the support member to contact the outdoor vertical surface portion of the beam.

3. 2. The curtain wall supporting structure according to claim 1, wherein the supporting member is provided with side rib plates on both sides of the supporting member.

4. 3. The curtain wall supporting structure according to claim 2, wherein the supporting member has side rib plates on both sides of the supporting member.

5. 5. The curtain wall supporting structure according to claim 4, wherein the contact surface portion is formed on the side rib plate.

6. 2. The curtain wall support structure according to claim 1, wherein the other end of the support member is provided with an adjustment portion for pushing up and adjusting the lower surface of the lower frame portion of the curtain wall.

7. In the curtain wall supporting structure described in claim 6, the adjustment part comprises a plate member located below the lower frame part, a vertical female screw part formed on the plate member, and a male screw member screwed into the vertical female screw part.

8. A curtain wall support structure according to any one of claims 1 to 7, characterized in that the support member has a vertical plate portion extending vertically at a position between the one end side and the other end side, and the vertical surface portion of the lower frame portion is fixed to this vertical plate portion by a fastening member.

9. 9. The curtain wall support structure according to claim 8, wherein the vertical plate portion is one half of an angle steel member, and the other half of the angle steel member forms the one end side.

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