Mullion structure for curtain wall

Abstract

To provide the mullion structure of a curtain wall, in which the allowable quantity of the torsion of one side erection section to the other side erection section is increased.SOLUTION: An intermediate member 50 is provided so as to be relatively movable to one side upright part 30 and the other side upright part 40, and the intermediate member 50 is provided with one side slidable support parts 52, 53 and the other side slidable support parts 52, 53. In the mullion structure 10 of the curtain wall, the one side erection part 30 includes one side sliding support parts 33, 36, 351, 352 for supporting the one side slid support part relatively movably to the one side erection part, and the other side erection part 40 includes other side sliding support parts 43, 46, 451, 452 for supporting the other side slid support part relatively movably to the other side erection part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a mullion structure for a curtain wall. [Background technology]

[0002] BACKGROUND ART Curtain walls installed in buildings are known (see, for example, Patent Document 1). A curtain wall is configured by a plurality of glass panels supported by mullions and transoms. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2024-2597 Summary of the Invention [Problem to be solved by the invention]

[0004] The mullion described in the above publication is composed of a left mullion and a right mullion. For example, the right mullion, which is one of the mullions, is provided with a foot extending toward the left mullion. The foot is inserted into a recess in the left mullion to form a seal. In mullions used in cold bending construction or to optimize corners with various angles, slight twisting of the right mullion relative to the left mullion occurs. In this case, the foot inserted into the recess absorbs this twisting by deformation or other means. However, because the foot is integrally formed with the right mullion, the tolerance for torsional deformation is limited.

[0005] The present disclosure aims to provide a curtain wall mullion structure that has a high tolerance for torsion of one side section relative to the other side section. [Means for solving the problem]

[0006] The present disclosure relates to a curtain wall support structure comprising support members that support facings and form the exterior walls of a building, wherein the support members have one side support portion and another side support portion, and comprise intermediate members that are arranged to be movable relative to the one side support portion and the other side support portion, respectively, and the intermediate members comprise one side slidingly supported portions and another side slidingly supported portions, the one side support portion comprises a one side sliding support portion that supports the one side slidingly supported portion so as to be movable relative to the one side support portion, and the other side support portion comprises a other side sliding support portion that supports the other side slidingly supported portion so as to be movable relative to the other side support portion. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a cross-sectional view showing the mullion structure of the curtain wall of the first embodiment. [Figure 2] FIG. 10 is a diagram illustrating how the right-side mullion twists relative to the left-side mullion of the curtain wall mullion structure of the first embodiment. [Figure 3] FIG. 2 is a diagram illustrating how a glass panel of the curtain wall of the first embodiment twists. [Figure 4] FIG. 10 is a cross-sectional view showing the mullion structure of the curtain wall of the second embodiment. [Figure 5] FIG. 10 is a cross-sectional view showing the mullion structure of the curtain wall of the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In this specification, the term "visible direction" refers to the surface direction of the glass panel 2 of the curtain wall 1 that constitutes the exterior wall of a building, and the term "visible direction" refers to the thickness direction of the glass panel 2 (i.e., the depth direction). The term "visible direction" also refers to the indoor-outdoor direction (in-plane out-of-plane direction). The term "visible surface" refers to the surface of the glass panel 2 facing the outdoor side and the indoor side, respectively, and the term "visible surface" refers to the surface extending in the indoor-outdoor direction. In the drawings, the outdoor side of the curtain wall 1 is referred to as the outdoor side X1, and the side of the curtain wall 1 closer to the room is referred to as the indoor side X2.

[0009] As shown in Figure 1, the curtain wall mullion structure 10 is fixed to a steel frame (not shown) that constitutes the main body, and comprises mullions 3 (frames) that serve as frames for supporting glass panels 2 as face materials, and intermediate members 50. The mullions 3 have a first mullion 30 as one side portion and a second mullion 40 as the other side portion. Because the first mullion 30 and the second mullion 40 are configured symmetrically, the first mullion 30 will be mainly described, and for the second mullion 40, the numbers in the 40s of the components corresponding to the components in the first mullion 30 that are numbered in the 30s will be shown, and their description will be omitted.

[0010] The first vertical section 30 has a side wall 31, an indoor end wall 32, an outdoor wall 33, and a hollow section 35. The side wall 31 is composed of a wall extending in the indoor / outdoor direction. The indoor end wall 32 is integrally formed and connected to the indoor side X2 end of the side wall 31 and extends toward the second vertical section 40 in the viewing direction. A C-shaped section 321 that opens toward the outdoor side X1 is provided on the indoor side X1, which is the inner surface of the indoor end wall 32. The engaged portion 382 of the sealing member 38 engages with the C-shaped section 321, fixing the sealing member 38 to the indoor end wall 32, and the plate-shaped section 381 of the sealing member 38 seals the opening formed between the first vertical section 30 and the second vertical section 40.

[0011] The exterior end wall portion 33 is integrally molded and connected to the end of the side wall portion 31 on the exterior side X1, and extends toward the second mullion section 40 in the facing direction. An outward extension portion 34 extending toward the exterior side X1 is integrally molded and connected to the end of the exterior wall portion 33 on the second mullion section 40 side in the facing direction. The exterior wall portion 33 has an L-shaped ledge 37 in the cross section shown in FIG. 1 . The hook-shaped portion of the ledge 371 in the facing direction of the ledge 37 engages with the hook-shaped portion provided on the outward extension portion 34, thereby fixing the ledge 37 to the outward extension portion 34. The exterior wall portion 33, the outward extension portion 34, and the ledge 37's facing extension portion 372 form a C-shaped glass storage space that opens in the facing direction away from the mullion 3 (to the left in FIG. 1 ).

[0012] The edge of the glass 21 that constitutes the glass panel 2 is inserted into the glass storage space. A seal made up of a spacer gasket 24 and a silicone sealant (structural silicone sealant) 25 is arranged between the edge of the glass 21 and the exterior wall portion 33. An exterior glazing gasket material 26 is arranged between the edge of the glass 21 and the oblique extension portion 372 of the ridge 37.

[0013] As a result, the edge of the glass 21 is supported in a sandwiched state between the exterior wall portion 33 and the ridge 37 via the silicone sealant 25, the spacer gasket 24, and the exterior glazing gasket material 26. As shown in Figure 1, the glass panel 2 is a double-glazed glass panel in which two identical rectangular glass sheets 21 are joined together via a primary sealant 41 that is elastically deformable and can adhere to the glass 21 and secondary sealant 42, and a secondary sealant 42 made of a silicone-based silicone sealant.

[0014] The hollow portion 35 is provided in the center of the side wall portion 31 in the projection direction, and is molded integrally with the side wall portion 31. The hollow portion 35 is composed of a part of the side wall portion 31, a pair of walls 351 and 352 extending from the side wall portion 31 toward the second upright portion 40, and an inner wall 353 molded integrally with and connected to the ends of the wall portion 351 and 352 so as to bridge the ends of the wall portion 351 and 352, and these form a hollow structure.

[0015] An inner extending wall 36 is provided at a position on the indoor side X2 opposite the wall portion 351 of the hollow portion 35. The inner extending wall 36 is composed of a wall portion extending from the side wall portion 31 in the direction of the second vertical portion 40 in a position parallel to the wall portion 351. The wall portion 352 extends from the side wall portion 31 in the direction of the second vertical portion 40 in a position parallel to the outdoor wall portion 33 at a position on the indoor side X2 opposite the outdoor wall portion 33.

[0016] The inner wall 353 has a recess formed in a direction away from the second upright section 40, and the intermediate member support section 60 is fixed to the recessed section. The intermediate member support section 60 is made of a metal part that is the same length as the upright section 3 in the vertical direction, and has a plate-shaped section 61 and a support section 62.

[0017] The plate-shaped portion 61 is fitted into a recess in the inner wall 353 and fixed to the inner wall 353 of the hollow portion 35 with a screw 611. The support portion 62 extends from the center of the plate-shaped portion 61 in the projection direction toward the second upright portion 40, and the extending end of the support portion 62 is formed in a C-shape.

[0018] The intermediate member 50 has a central wall portion 51, foot portions 52 and 53, and a supported portion 56 as a supported portion on one side, which are connected to one another by being integrally molded. Specifically, the central wall portion 51 is composed of a plate-shaped wall portion that extends in the projection direction and the vertical direction between the first upright portion 30 and the second upright portion 40. The central wall portion 51 has the same length in the vertical direction as the upright portion 3.

[0019] The foot 52 is formed by a wall portion that extends in the viewing direction toward the first upright portion 30 and toward the second upright portion 40 at the indoor side X2 end of the central wall portion 51. The extending end of the foot 52 has a C-shaped portion on each of the outdoor side X1 and indoor side X2, and an airtight material 55 is fixed to the C-shaped portion.

[0020] The portion of foot 52 on which airtight material 55 is provided is located between inner extending wall 36 and wall 351 in first upright section 30, and constitutes a one-side sliding supported section against which airtight material 55 abuts so as to be able to slide relatively. Inner extending wall 36 and wall 351 constitute a one-side sliding support section that supports the one-side sliding supported section so as to be able to move relatively to first upright section 30 as one side upright section.

[0021] The portion of foot 52 on which airtight material 55 is provided is located between inner extending wall 46 and wall 451 in second upright section 40, and constitutes the other-side sliding supported section against which airtight material 55 abuts so as to be able to slide relatively. Inner extending wall 46 and wall 451 constitute the other-side sliding support section that supports the other-side sliding supported section so as to be able to move relatively to second upright section 40 as the other-side upright section.

[0022] The foot 53 is formed at the outdoor side X1 end of the central wall 51 by a wall portion that extends in the viewing direction toward the first upright portion 30 and toward the second upright portion 40. Similar to the foot 52, the outdoor side X1 and the indoor side X2 of the extending end of the foot 53 each have a C-shaped portion, and an airtight material 55 is fixed to the C-shaped portion.

[0023] The portion of foot 53 where airtight material 55 is provided is located between outdoor wall 33 and wall 352 in first upright section 30, and forms a one-side sliding support portion against which airtight material 55 slidably abuts. Outdoor wall 33 and wall 352 form a one-side sliding support portion that supports the one-side sliding support portion movably relative to first upright section 30 as one side upright section.

[0024] The portion of foot 53 on which airtight material 55 is provided is located between outdoor wall 43 and wall 452 in second upright section 40, and constitutes the other-side slidingly supported section against which airtight material 55 slidably abuts. Outdoor wall 43 and wall 452 constitute the other-side slidingly supported section that supports the other-side slidingly supported section so that it can move relatively to second upright section 40 as the other-side upright section.

[0025] This allows the airtight material 55 to slide relative to both the first and second mullions 30 and 40. Furthermore, in the first mullion 30, the foot 52 is supported by abutting the inner extension wall 36 and the wall 351 via the airtight material 55, and in the second mullion 40, it is supported by abutting the inner extension wall 46 and the wall 451 via the airtight material 55. Furthermore, in the first mullion 30, the foot 53 is supported by abutting the outdoor wall 33 and the wall 352 via the airtight material 55, and in the second mullion 40, it is supported by abutting the outdoor wall 43 and the wall 452 via the airtight material 55. In this state, the indoor side X2 can be airtight with the outdoor side X1 inside the mullion 3. Furthermore, even if the dimensions of each part of the curtain wall are slightly different, the curtain wall 1 can be constructed using a common mullion 3. This means that even slight dimensional differences can avoid the need to manufacture new mullions.

[0026] Furthermore, the second upright portion 40 may be twisted relative to the first upright portion 30. Specifically, for example, from a state in which the top edge 201, bottom piece 202, left edge 203, and right piece 204 of the glass panel 2 are aligned with the imaginary lines L1, L2, L3, and L4, as shown in Fig. 3, the connection point (upper right corner) between the top edge 201 of the glass panel 2 and the right piece 204 may be displaced in the direction of the arrow, as shown in Fig. 3.

[0027] 2, the second mullion 40 together with the glass panel 2 is displaced so as to rotate a small angle, for example, about 0.1 to 2 degrees, in cross section relative to the first mullion 30. At this time, the airtight materials 55 of the feet 52 and 53 can slide relative to the first mullion 30 and the second mullion 40, respectively, so that the displacement due to twisting of the glass panel 2 and the second mullion 40 can be absorbed by the sliding of the airtight materials 55 on the first mullion 30 and the second mullion 40, respectively, making it possible to create a mullion 3 with a large tolerance for twisting.

[0028] The central wall portion 51 has a supported portion 56. The supported portion 56 is configured by a wall portion extending in a direction from the central wall portion 51 toward the first upright portion 30, and the extending end portion of the supported portion 56 is formed in a circular shape in the cross section shown in FIG. 1. The circular extending end portion of the supported portion 56 is fitted into a C-shaped portion of the extending end portion of the support portion 62. As a result, the intermediate member 50 is supported by the intermediate member support portion 60 so as to be rotatable relative to the intermediate member support portion 60 around the center of the C-shaped portion of the extending end portion of the support portion 62.

[0029] 2 caused by twisting of the glass panel 2 and second upright section 40 as described above, the intermediate member 50 rotates about the center of the C-shaped portion of the extending end of the support section 62, making it possible to absorb the rotational displacement in the direction indicated by the arrow in Fig. 2. This makes it possible to prevent deformation of the intermediate member 50 caused by displacement in the same direction. It also makes it possible to prevent the intermediate member 50 from sliding excessively toward the first upright section 30 or the second upright section 40, or from falling off the first upright section 30 or the second upright section 40.

[0030] The position at which the intermediate member 50 is supported by the intermediate member support part 60 so as to be rotatable relative to the intermediate member support part 60 is the center of the C-shaped portion of the extending end of the support part 62, and this position is adjacent to the center line L in the left-right direction of Figure 1 in the viewing direction of the mullion 3. This makes it possible to effectively rotate the intermediate member 50 relative to the intermediate member support part 60 around the center of the C-shaped portion of the extending end of the support part 62, at a position close to the center line L of the mullion 3.

[0031] Next, a second embodiment of the present disclosure will be described in detail with reference to the drawings. The second embodiment differs from the first embodiment in that an intermediate member support member 70A is provided. Accordingly, the configuration of the hollow portion 35A differs from the configuration of the hollow portion 35 in the first embodiment. In other respects, the second embodiment is similar to the first embodiment, and the same members are designated by the same reference numerals and will not be described again.

[0032] The intermediate member support member 70A is arranged along the longitudinal direction of the upright 3A and is shorter than the upright 3A in the vertical direction, which is the longitudinal direction of the upright 3A. As shown in Fig. 4, the intermediate member support member 70A has an axial wall portion 71A and large end portions 72A and 73A as first and second supported portions, which are connected to both ends of the axial wall portion 71A by being integrally molded therewith and have a larger width in the projection direction than the axial wall portion 71A.

[0033] The hollow portion 35A has an inner wall 353A instead of the inner wall 353 of the first embodiment. The inner wall 353A is provided to bridge the intermediate portions of the wall portions 351 and 352 in the forward direction. The center portion of the inner wall 353A in the forward direction has a C-shaped portion 3531A that serves as a support portion for the upright side support member, opening toward the second upright portion 40A. Therefore, the C-shaped portion 3531A is configured to be fixed to the first upright portion 30A. The C-shaped portion 3531A accommodates the wide end portion 72A of the intermediate member support member 70A, and the wide end portion 72A is supported by being rotatable in contact with the C-shaped portion 3531A.

[0034] The center of the central wall 51A of the intermediate member 50A in the projection direction has a C-shaped portion 56A that opens toward the first upright portion 30A and serves as an intermediate-side support member support portion. The C-shaped portion 56A accommodates the wide end portion 73A of the intermediate member support member 70A, and the wide end portion 73A is supported by being in rotatable contact with the C-shaped portion 56A. This allows the intermediate member 50A to rotate relative to the first upright portion 30A at a position away from the first upright portion 30A.

[0035] Next, a third embodiment of the present disclosure will be described in detail with reference to the drawings. In the third embodiment, the mullions (corner mullions) 3B are provided at the corners of the curtain wall 1B, which is different from the mullions 3 in the first embodiment. Accordingly, the configurations of the first mullion section 30A and the second mullion section 40A are different from the configurations of the first mullion section 30 and the second mullion section 40 in the first embodiment. In other respects, the third embodiment is the same as the first embodiment, and the same components are designated by the same reference numerals and will not be described again.

[0036] 5, in first vertical section 30A, the angles formed by indoor end wall 32B, outdoor wall 33B, inner extension wall 36B, wall 351B, and wall 352B with side wall 31B are 45 degrees. Accordingly, foot 52B and foot 53B are bent at 90 degrees at their respective central connection positions where they are connected to central wall 51.

[0037] Although a preferred embodiment of the present disclosure has been described above, the present disclosure is not limited to the above-described embodiment and can be modified as appropriate.

[0038] For example, in the present embodiment, the extending end of the supporting portion 62 of the intermediate member supporting portion 60 is formed in a C-shape, and the extending end of the circular supported portion 56 is formed on the intermediate member 50, but this is not limiting. For example, a circular extending end may be formed on the intermediate member supporting portion, and a C-shaped extending end may be formed on the intermediate member.

[0039] In addition, in this embodiment, the ends of foot portion 52 and foot portion 53 are inserted into the C-shaped portion formed by inner extension wall 36 and wall portion 351, and the C-shaped portion formed by outdoor wall portion 33 and wall portion 352, respectively, but this configuration is not limited to this. For example, the tip ends of the feet may be C-shaped, and extension portions extending from the first and second upright portions may be inserted into the C-shaped portions. In this case, airtight material 55 is fixed to the extending ends of the extension portions.

[0040] In addition, in this embodiment, the first mullion 30 constitutes one side mullion and the second mullion 40 constitutes the other side mullion, but this is not limited to this. For example, the first mullion may constitute the other side mullion and the second mullion may constitute one side mullion. The mullion structure of the curtain wall may also be used in a cold bend construction method. In addition, in this embodiment, the central wall portion 51 has the same length as the mullion 3 in the vertical direction, but this is not limited to this. [Explanation of symbols]

[0041] DESCRIPTION OF SYMBOLS 1, 1A, 1B Curtain wall 2 Glass panel (face material) 3 Mulliner 10 Mulliner structure of curtain wall 30 First mulliner section (one side mulliner section) 33 Outdoor wall section (one side sliding support section) 36 Inner extension wall (one side sliding support section) 40 Second mulliner section (other side mulliner section) 43 Outdoor wall section (other side sliding support section) 46 Inner extension wall (other side sliding support section) 50 Intermediate member 51 Central wall section 52, 53 Foot section (one side sliding supported section, other side sliding supported section) 55 Airtight material 56 Supported section (one side supported section) 56A C-shaped section (middle section side supporting member support section) 60 Intermediate member supporting section 62 Support section 70A Intermediate member supporting member 72A Large end section (first supported section) 73A Wide end (second supported portion) 351 Wall portion (one side sliding support portion) 352 Wall portion (one side sliding support portion) 451 Wall portion (other side sliding support portion) 452 Wall portion (other side sliding support portion) 3531A C-shaped portion (support portion for support member on vertical side) L Center line

Claims

1. A curtain wall structure that forms the exterior wall of a building and includes a support supporting a surface material. The mullion has one side portion and another side portion, an intermediate member provided so as to be movable relative to the one side upright portion and the other side upright portion, the intermediate member includes a one-side slidingly supported portion and a second-side slidingly supported portion, the one-side upright portion includes a one-side sliding support portion that supports the one-side sliding supported portion so as to be movable relative to the one-side upright portion, A curtain wall support structure in which the other side upright portion is provided with an other side sliding support portion that supports the other side sliding supported portion so that it can move relatively to the other side upright portion.

2. the one side upright portion includes an intermediate member support portion, The curtain wall support structure according to claim 1 , wherein the intermediate member has a supported portion supported by the intermediate member support portion.

3. The curtain wall support structure according to claim 2, wherein the intermediate member support portion is fixed to the one side upright portion.

4. 3. The curtain wall support structure according to claim 2, wherein the position where the intermediate member support portion abuts and supports the supported portion is adjacent to the center line of the support.

5. The one side upright portion has an upright side support member support portion, the intermediate member has an intermediate portion side support member support portion, A curtain wall support structure as described in claim 1, comprising an intermediate member support member having a first supported portion supported by the support portion of the support member on the upright side and a second supported portion supported by the support portion of the intermediate member on the support member on the intermediate side.

6. The curtain wall support structure according to claim 5, wherein the intermediate member support member has a length in the vertical direction that is shorter than the length of the support member.

7. The curtain wall support structure according to claim 5, wherein the support portion of the support member on the upright side is fixed to the one side upright portion.

8. 2. The curtain wall support structure according to claim 1, wherein the intermediate member has a length in the vertical direction equal to the length of the support.

9. 2. The curtain wall support structure according to claim 1, wherein an airtight material is provided between the one-side sliding support portion of the intermediate member and the one-side sliding support portion of the one-side upright portion.

10. The curtain wall support structure according to claim 9, wherein an airtight material is provided between the other-side sliding support portion of the intermediate member and the other-side sliding support portion of the other-side upright portion.

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