Curtain wall fitting structure

Abstract

To provide a curtain wall fitting structure securing high load resistant performance in a surface outer direction and a surface inner direction of a curtain wall and high quietness performance for movement of the curtain wall.SOLUTION: A curtain wall fitting structure fixes frames 3, which support surface materials of a curtain wall consisting of a plurality of surface materials, to a skeleton of a building. The curtain wall fitting structure comprises: a frame fixed portion 40 to be fixed to the frame 3; a skeleton fixed portion 20 to be fixed to the skeleton; and a connection part 30 to connect the frame fixed portion 40 and the skeleton fixed portion 20. The frame fixed portion 40 has a guide abutted portion and an abutting portion. The connection part 30 has a guide part against which the guide abutted portion abuts from outdoor side, and a support part against which an end on lower side of the abutting portion abuts to support the frame fixed portion.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present disclosure relates to an attachment structure for a curtain wall.

Background Art

[0002] A curtain wall provided in a building is known (see, for example, Patent Document 1). The curtain wall is fixed to the ground or the floor surface by a fixing device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, there has been an increasing demand for high load-bearing performance of a curtain wall in the out-of-plane and in-plane directions, and high quiet performance against the movement of the curtain wall. There is a demand for improving the performance of the fastener bracket that constitutes the fixing member for ensuring these.

[0005] An object of the present disclosure is to provide an attachment structure for a curtain wall that ensures high load-bearing performance of the curtain wall in the out-of-plane and in-plane directions and high quiet performance against the movement of the curtain wall.

Means for Solving the Problems

[0006] The present disclosure relates to an attachment structure for a curtain wall that fixes a frame supporting the facing material of the curtain wall composed of a plurality of facing materials to the building structure, the attachment structure including a frame-fixed part fixed to the frame, a structure-fixed part fixed to the building structure, and a connecting part connecting the frame-fixed part and the structure-fixed part. The frame-fixed part includes a guide contact part and a contact part. The connecting part includes a guide part against which the guide contact part abuts from the outdoor side, and a support part that supports the frame-fixed part by abutting against the lower end of the contact part.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

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Figure 13

Embodiments for Carrying Out the Invention

[0008] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In this specification, the "viewing direction" means the surface direction of the glass panel 2 of the curtain wall 1 of the building B as a building, and the "prospective direction" means the thickness direction (that is, the depth direction) of the glass panel 2. The "prospective direction" is also the indoor-outdoor direction (in-plane and out-of-plane direction). The "viewing surface" means each surface facing the outdoor side and the indoor side of the glass panel 2, and the "prospective surface" means a surface extending in the indoor-outdoor direction. In the drawings, the outdoor side of the curtain wall 1 is defined as the outdoor side X1, and the side closer to the indoor side of the curtain wall 1 is defined as the indoor side X2.

[0009] As shown in FIG. 2 and the like, the mounting structure 10 of the curtain wall is fixed to the steel frame S constituting the body and supports the frame 3 (marionette) that supports the glass panel 2 as a facing material. Specifically, as shown in FIG. 4 and the like, the mounting structure 10 of the curtain wall includes a body fixing portion 20 (slab bracket), a connecting portion 30 (hook bracket), and a frame fixing portion 40 (marionette bracket).

[0010] As shown in FIG. 8 and the like, the body fixing portion 20 (slab bracket) has a rectangular plate-shaped base portion 211, an end locking portion 212 that rises upward from the end portion on the outdoor side X1 of the base portion 211, and a movement preventing portion 213 that rises upward with a lower height than the end locking portion 212 on the indoor side X2 with respect to the end locking portion 212.

[0011] The base portion 211 is fixed to the steel frame S by bolts 214, whereby the object-to-be-fixed portion 20 is fixed to the steel frame S. The end locking portion 212 extends from one end to the other end of the outdoor-side X1 end of the base portion 211 and rises upward. The upper end portion of the end locking portion 212 has a shape that is part of a circle having an arc of a semi-circle or more (a central angle of 180 degrees or more) in a side view.

[0012] The movement prevention portion 213 extends from one end to the other end in the left-right direction of the finding direction of the base portion 211 in parallel with the end locking portion 212 and rises upward. The upper end portion of the movement prevention portion 213 has a plate-shaped portion 2131 that is horizontal and has a constant width in the prospective direction. On the upper surface of the plate-shaped portion 2131, a groove 2132 is formed as a rotation prevention recess having a constant width in the prospective direction and extending in the longitudinal direction of the plate-shaped portion 2131.

[0013] A stopper 2133 is provided on the upper surface of the plate-shaped portion 2131. The stopper 2133 has a rectangular plate-shaped movement prevention portion 2134 that is integrally formed and connected, and a rectangular plate-shaped rotation prevention convex portion 2135 that protrudes downward from the movement prevention portion 2134 and has a width that fits into the groove 2132 and fits into the groove 2132. A rectangular notch 2136 is formed in the movement prevention portion 2134 in a plan view. The rotation prevention convex portion 2135 is fixed to the plate-shaped portion 2131 by a screw 2137 in a state of being fitted into the groove 2132.

[0014] The connecting portion 30 (hook bracket), as shown in FIG. 10, has an indoor-side portion 311 in which a downward-opening U-shaped notch is integrally formed and connected, and a guide portion 312 in which a pair of C-shaped cylindrical portions extending in the vertical direction are integrally formed and connected on the indoor side. The connecting portion 30 connects the object-to-be-fixed portion 20 (slab bracket) and the frame-to-be-fixed portion 40 (marionette bracket).

[0015] Between the U-shaped notch that opens downward in the indoor side portion 311 and the upper end portion of the end locking portion 212 (see FIG. 8), a sound suppression member 42 is disposed so as to be sandwiched between them. Specifically, as shown in FIG. 12, the sound suppression member 42 includes a U-shaped sound suppression member main body 421 that opens downward, and at the center of the U-shape of the U-shaped sound suppression member main body 421, there are provided screwing portions 422 that respectively project upward from both ends in the width direction of the sound suppression member main body 421.

[0016] As shown in FIG. 8, when the screwing portion 422 is fixed to the indoor side portion 311 by screws 43, the sound suppression member 42 is fixed to the indoor side portion 311, and the sound suppression member main body 421 (see FIG. 12) is disposed between the indoor side portion 311 and the end locking portion 212. The indoor side portion 311 is slidable with respect to the upper end portion of the end locking portion 212 via the sound suppression member 42. When sliding in this way, it is possible to suppress the generation of abnormal sounds between the indoor side portion 311 and the end locking portion 212.

[0017] The indoor side portion 3112 that forms the U-shaped notch opening downward in the indoor side portion 311 is inserted into the notch 2136 as shown in FIG. 8 and the like. As a result, when the corresponding portion 3112 of the indoor side portion 311 abuts against the portion of the movement prevention portion 213 where the notch 2136 is formed, the movement of the connecting portion 30 in the left-right direction of the finding direction can be blocked.

[0018] Due to this abutment, a force trying to rotate acts on the movement prevention portion 213, but the rectangular rotation prevention convex portion 2135 is fitted into the groove 2132. For this reason, the portion of the movement prevention portion 213 that forms the edge in the width direction of the groove 2132 and the long side of the rectangular rotation prevention convex portion 2135 abut against each other over a long distance, and the rotation of the movement prevention portion 213 can be blocked. Furthermore, since the rotation prevention convex portion 2135 is fixed to the plate-like portion 2131 by screws 2137 in a state of being fitted into the groove 2132, it is possible to maintain a firmly fixed state.

[0019] On the indoor side portion 311 of the connecting portion 30, a through hole 3111 with an internal thread is formed. A suspension fitting M (see Fig. 13) composed of a load ring for fail-safe can be fixed to the through hole 3111. When constructing the curtain wall, the glass panel 2 etc. is lifted by clamping the fitting provided at a location other than the connecting portion 30. However, even if the fitting comes off by any chance, it is possible to prevent the glass panel 2 etc. from falling by fixing the suspension fitting for fail-safe to the through hole 3111.

[0020] As shown in Fig. 10, at the central portion of the guide portion 312 which is a pair of C-shaped cylindrical portions, a support portion 313 protruding to the outdoor side X1 is integrally formed and connected to the guide portion 312. The support portion 313 has a cylindrical shape extending in the vertical direction with the same length as the length of the guide portion 312 in the vertical direction.

[0021] The frame fixing portion 40 (marionette bracket) includes, as shown in Figs. 6, 9, etc., a vertically long rectangular outdoor side plate-like portion 411, a guided contact portion 412, and a bolt 41 (see Figs. 8, 11) as a contact portion. The outdoor side plate-like portion 411 and the guided contact portion 412 are integrally formed and connected.

[0022] The rectangular outdoor side plate-like portion 411 has a through hole 4111 and a jagged convex portion 4112 formed by a plurality of small ridges and valleys extending in the vertical direction being formed in parallel. An internal thread is engraved in the through hole 4111, and a bolt 4113 (see Fig. 5) passes through, and the outdoor side plate-like portion 411 is fixed to the frame 3.

[0023] The jagged convex portion 4112 is formed from the upper end to the lower end of the frame fixing portion 40, more specifically, from the upper end to the lower end of the outdoor side plate portion 411. With this configuration, it becomes possible to form the frame fixing portion 40 having the jagged convex portion 4112 by extrusion molding. The shapes of the ridges and valleys of the jagged convex portion 4112 are the same as the shapes of the valleys and ridges of the jagged concave portion 3012 of the frame 3 described later, and they can be fitted to each other. The height from the peak of the ridge to the bottom of the valley of the jagged convex portion 4112 is 0.5 mm or more and 2 mm or less, and in this embodiment, it is 1.5 mm. The width of each ridge and valley is 1 mm or more and 4 mm or less, and in this embodiment, it is 3 mm.

[0024] When the value is smaller than this range, as will be described later, when the jagged convex portion 4112 is fitted into the jagged concave portion 3012 of the frame 3, it cannot be firmly fitted. When the value is larger than this range, it becomes difficult to process the jagged convex portion 4112, and it also becomes difficult to fit the jagged convex portion 4112 and the jagged concave portion 3012 and attach the frame 3 to the frame fixing portion 40.

[0025] As described above, the frame fixing portion 40 is fixed to the frame 3 by fixing the outdoor side plate portion 411 to the frame 3 by passing the bolt 4113 through the through hole 4111. In addition to this, by fitting the jagged convex portion 4112 and the jagged concave portion 3012, the frame fixing portion 40 is firmly fixed to the frame 3 in the expected direction, which is the indoor-outdoor direction. Therefore, it becomes possible to enhance the wind pressure resistance so that it can withstand the wind pressure on the glass panel 2 transmitted to the frame 3 and the frame fixing portion 40 fixed to the frame 3 via the frame 3, and it becomes possible to further enhance the safety.

[0026] As shown in FIG. 6 and the like, the guided contact portion 412 has a bifurcated portion 4121 that bifurcates into a semicircular arc shape in a plan view from the indoor-side end of the outdoor side plate portion 411, and a pair of columnar portions 4122 that extend in the vertical direction at the tip of the bifurcated portion 4121. The bifurcated portion 4121 and the pair of columnar portions 4122 are integrally formed and connected.

[0027] On the inner peripheral surface of the branch portion 4121, a female thread is helically engraved. The male thread of the bolt 41 (see FIGS. 5, 8, and 11) inserted from above into the space formed by the inner peripheral surface of the branch portion 4121 is screwed into the female thread. Further, the support portion 313 is inserted into the space formed by the inner peripheral surface of the branch portion 4121 from below so as to be vertically movable without contacting the branch portion 4121. Further, the pair of columnar portions 4122 are respectively inserted into the spaces inside the guide portions 312 which are a pair of C-shaped cylindrical portions of the connecting portion 30, and are fitted to the guide portions 312 so as to be relatively slidable in the vertical direction with respect to the inner peripheral surfaces of the guide portions 312.

[0028] Thereby, the pair of columnar portions 4122 are guided to slide in the vertical direction with respect to the pair of guide portions 312. Further, since the side surfaces (peripheral surfaces) of the pair of columnar portions 4122 are in contact with the inner peripheral surfaces of the guide portions 312 which are a pair of C-shaped cylindrical portions from the outdoor side, the frame 3 and the glass panel 2 to which the frame-fixed portion 40 fixed to the frame 3 via the frame 3 are transmitted. It is configured to be able to withstand high wind pressure.

[0029] As shown in FIG. 8 and the like, the bolt 41 is inserted from above into the space 4123 formed by the inner peripheral surface of the branch portion 4121 (see FIGS. 9 and the like) through a nut and a washer, and the male thread of the bolt 41 is screwed into the female thread helically engraved on the inner peripheral surface of the branch portion 4121. The lower end portion of the bolt 41 abuts on the upper end surface of the support portion 313 as shown in FIG. 11. By this abutment, the support portion 313 supports the bolt 41, the frame-fixed portion 40 having the branch portion 4121 with which the bolt 41 is screwed, and further the glass panel 2 supported by the frame 3 to which the frame-fixed portion 40 is fixed, and is configured to withstand the support of their own weights.

[0030] Thus, the bolt 41, the frame fixing part 40 having the branch part 4121 with which the bolt 41 is screwed, and further, the part of the structure that can withstand the weight of the glass panel 2 supported by the frame 3 to which the frame fixing part 40 is fixed. The bolt 41 as the contact part, the guided contact part 412 of the frame fixing part 40, the frame 3, and the pair of columnar parts 4122 and the guide part 312 which are parts of the structure that can withstand the high wind pressure transmitted to the glass panel 2 through the frame 3 and the frame fixing part 40 fixed to the frame 3 are constituted by different parts.

[0031] Therefore, when a high wind pressure acts on the glass panel 2 or during an earthquake, it is possible to suppress the generation of abnormal noises due to shaking compared to the case where the weight is received by the screwing of the bolt. Further, in the part of the structure that can withstand the support of the weight, the support part 313 is inserted into the space 4123 formed by the inner peripheral surface of the branch part 4121 from below so as to be able to move up and down without contact with the branch part 4121. Since a sufficient gap is formed between the support part 313 and the branch part 4121 so as to be non-contact in this way, it is possible to prevent the generation of abnormal noises in this part when a high wind pressure acts on the glass panel 2 or during an earthquake, and it is possible to obtain high quietness.

[0032] Furthermore, in the pair of columnar parts 4122 and the guide part 312 which are parts of the structure that can withstand the high wind pressure transmitted to the glass panel 2 through the frame 3 and the frame fixing part 40 fixed to the frame 3, the pair of columnar parts 4122 are slidable in the vertical direction with respect to the guide part 312. Therefore, in the part of the structure that can withstand the high wind pressure, the glass panel 2 and the frame 3 that supports the glass panel 2 can move in the vertical direction.

[0033] Also, the position of the bolt 41 does not displace in the vertical direction in the same way as the position of the support part 313 due to the contact of the lower end part of the bolt 41 with the upper end surface of the support part 313. Therefore, by rotating the bolt 41 with respect to the branch part 4121, the frame fixing part 40 having the branch part 4121 with respect to the bolt 41 is configured to be relatively movable in the vertical direction.

[0034] The frame 3 (marion) has a hollow structure with a plurality of spaces inside. The inner surface of the wall portion 301 closer to the interior, which extends in the prospective direction (indoor-outdoor direction) constituting the hollow structure of the frame 3, has a zigzag-shaped concave portion 3012 that fits into the zigzag-shaped convex portion 4112 from the upper end to the lower end of the frame 3. With this configuration, it becomes possible to mold the frame 3 in which the zigzag-shaped concave portion 3012 is formed by extrusion molding. The outdoor-side end of the frame 3 supports the left or right edge of the glass panel 2 as shown in FIG. 4 and the like.

[0035] As described above, a preferred embodiment of the present disclosure has been described. However, the present disclosure is not limited to the above-described embodiment and can be appropriately modified.

[0036] For example, in the present embodiment, the outdoor-side plate-shaped portion 411 has a zigzag-shaped convex portion 4112, and the frame 3 has a zigzag-shaped concave portion 3012, but it is not limited thereto. For example, the outdoor-side plate-shaped portion may have a concave portion, and the frame may have a convex portion. Further, the convex portion and the concave portion are not limited to a mountain portion and a valley portion, respectively, and the convex portion and the concave portion may be configured in a shape that fits together with each other.

Explanation of Reference Numerals

[0037] 1 Curtain wall 2 Glass panel 3 Frame 10 Mounting structure of curtain wall 20 Fixed portion to the building body 30 Connecting portion 40 Fixed portion to the frame 41 Bolt (contact portion) 42 Sound suppression member 312 Guide portion 313 Support portion 412 Contact portion with the guide 2132 Groove (rotation prevention concave portion) 2133 Stopper 2135 Rotation prevention convex portion 2137 Screw 3012 Zigzag-shaped concave portion (concave portion) 3111 Through hole 4112 Zigzag-shaped convex portion (convex portion) M Hanging metal fitting S Steel frame

Claims

1. A curtain wall mounting structure for fixing a frame that supports the facing materials of a curtain wall composed of a plurality of facing materials to the building structure, comprising: a frame-fixed part fixed to the frame; a structure-fixed part fixed to the structure; and a connecting part connecting the frame-fixed part and the structure-fixed part, wherein the frame-fixed part includes a guide-contact part and a contact part; the connecting part includes a guide part against which the guide-contact part abuts from the outdoor side, and a support part that supports the frame-fixed part by abutting against the lower end of the contact part. A curtain wall mounting structure.

2. The curtain wall mounting structure according to claim 1, wherein the guide-contact part is slidably fitted to the guide part.

3. The curtain wall mounting structure according to claim 2, wherein the guide-contact part is slidably fitted to the guide part in the vertical direction.

4. A sound suppression member for suppressing the sound generated between the connecting part and the structure-fixed part when the connecting part moves relative to the structure-fixed part is provided between the connecting part and the structure-fixed part. The curtain wall mounting structure according to claim 1.

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