JPH11270035A - Mounting structure of curtain wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a structure, in which a mullion for a curtain wall is installed to the fastener of a slab by bolts and nuts through a bracket so as to be fitted to the curtain wall for low-and-medium-rises, to decrease the number of parts required, to minimize places of welding and to reduce cost. SOLUTION: A bracket 14 consists of a single angle material and installed onto the rear of a mullion by a bolt and a nut in the vertical section of the angle material, and a nut, with which a bolt for leveling, in which a front end is abutted against the top section of a fastener, is engaged, is mounted on the horizontal section of the bracket. A recessed groove 2a for fitting the nut or a pair of projected strips are formed on the inside of the rear of the mullion, and a recessed groove, into which the nut is fitted, or a pair of projecting strips 25 are formed to the lower side face of the horizontal section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for mounting a curtain wall on a structure (building body).
More specifically, a structure for attaching a curtain wall which is formed by connecting a bracket fixed to a mullion of a curtain wall and a fastener fixed to a slab (floor slab) of a structural body with a bolt and nut. Regarding improvement.

[0002]

2. Description of the Related Art Conventionally, as a mounting structure for mounting a curtain wall on a slab of a structure, for example, Japanese Patent Application Laid-Open No. 8-105 is disclosed.
No. 139, JP-A-8-193374, and the like, a pair of right-angled brackets and fasteners are provided.
Was used. That is, as shown in FIGS. 14 to 16, the pair of right-angled brackets 3 is a mullion (longitudinal member).
A fastener 4 is fixed to the mullion by bolts and nuts 6 so as to face the inner side surface of the slab 5 with a rib plate (embedded fastener) 7 provided on the slab 5 of the structure. The mullion 2 of the curtain wall was attached to the slab 5 by being fixed with bolts and nuts 8 and connecting the pair of brackets 3 to the fasteners 4 with bolts and nuts 9 respectively. In addition,
In FIG. 14, reference numeral 10 denotes a blind (horizontal member), and glass or a panel or the like is fitted in each rectangular area defined by the mullion 2 and the blind 10.

Accordingly, in the conventional mounting structure, a pair of brackets 3 is used for each mounting portion, and the pair of brackets 3 and the fasteners 4 are each formed of a relatively large right-angled member made of steel. In order to adjust the position of the mullion 2 in the vertical direction, a support member 11 made of a steel angle material is fixed to the upper portion of the bracket 3 by welding, as clearly shown in FIG. The nut 12 was welded to the lower side of the round hole 11a drilled in the above, and the adjusting bolt 13 was engaged and supported by the nut. The level adjustment was performed by abutting the tip (lower end) of the adjustment bolt 13 on the top 4a of the fastener-4.

[0004]

In particular, in the case of a middle or low-rise curtain wall, the structure for attaching the curtain wall is simplified to reduce the number of parts and the number of work steps, and the construction is relatively inexpensive. However, in the conventional mounting structure, a pair of brackets must be provided opposite to the side surface (the side surface in the anticipated direction) of the mullion 2, and the bracket 3 for mounting the adjustment bolt 13 for level adjustment is required. Since the support member 11 had to be welded to the upper part, the number of parts and the number of steps were increased, and a demand for rationalization was required.

Further, the nut 12 which engages with and supports the adjusting bolt 13 must be fixed by welding coaxially with the hole below the hole formed in the center of the supporting member 11, This required a troublesome welding operation, which was a bottleneck in simplifying the configuration and reducing costs.

An object of the present invention is to solve the above-mentioned problems of the prior art. Therefore, by simplifying the structure, the number of parts required is reduced, and a difficult welding operation is not required. An object of the present invention is to provide a curtain wall mounting structure that can be easily and cost-effectively reduced.

[0007]

In order to achieve the object of the present invention, the structure for attaching a curtain wall according to the present invention comprises a bracket fixed to a mullion of the curtain wall and a slab of the structure. In a curtain wall mounting structure in which a fixed fastener is connected to a bolt and a nut, the bracket is made of a single right-angled angle material, and a bolt and a nut are provided on the back of the mullion at a vertical portion thereof. And a nut to be engaged with an adjustment bolt having a tip abutting on the top of the fastener is installed on the horizontal portion of the angle member, and conventionally required a pair of brackets. The structure is composed of one bracket and the number of welds is reduced. Preferably, a vertical portion of the bracket is formed in a crank shape such that a central portion is separated from a back surface of the mullion.

In a preferred embodiment of the present invention, a pair of concave grooves extending in the longitudinal direction and having a width slightly larger than the facing width of the head of the mounting bolt or a pair of grooves having a width slightly larger than the facing width are provided inside the back surface of the mullion. A ridge is formed, and the bracket attached to the back of the mullion is attached to the mullion at the upper and lower parts of its vertical part, and each of the attachment parts corresponding to the upper and lower parts of the back of the mullion has a square hole and A continuous slot is formed in the area between the grooves or the ridges, and the width of the rectangular hole, which is the lateral dimension, is slightly larger than the facing width of the bolt head and the width of the slot. Is characterized by being slightly larger than the diameter of the shaft of the bolt, facilitating attachment of the bracket to the back of the mullion.

In another preferred embodiment of the present invention, a pair of ridges are provided on the lower surface of the horizontal portion of the right-angled bracket attached to the back of the mullion at a spacing slightly larger than the facing width of the nut with which the adjustment bolt engages. Are formed, and the nut is fitted between the ridges to facilitate installation of the nut. In another embodiment, a groove having a width slightly larger than the facing width of the nut with which the adjustment bolt engages is formed on the lower surface of the horizontal portion of the bracket, and the nut is fitted into the groove.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; FIGS. 1 and 2 generally show a preferred example of a curtain wall mounting structure according to the present invention. As shown in FIG. 1 and FIG. 2, the bracket 14 is also fixed to the mullion 2 in this mounting structure. Then, the fastener 4 is fixed to the slab 5 of the structure, and the bracket and the fastener 4 are connected to each other by bolts 9 so that the mullion 2 becomes the slab 5 and thus the curtain wall 1.
In this mounting structure, a pair of brackets 3 are conventionally used opposite to each other across the mullion 2, whereas a single bracket 14 is provided on the back of the mullion 2, that is, on the indoor side of the mullion. Attached to the seating surface, thereby reducing the number of parts and eliminating the need for conventional support 11 welding, which constitutes a fundamental feature of the invention.

As shown clearly in FIG. 3, the bracket 14 is made of a right angled material, which is formed by cutting an extruded material, preferably an aluminum alloy extruded material, to a predetermined size. The mullion 2 includes a vertical portion 14a attached along the back surface and a horizontal portion 14b protruding horizontally toward the indoor side. The mullion 2 is also formed as an extruded shape, preferably as an aluminum alloy extruded shape. The mounting of the bracket 14 to the mullion 2 is performed by a bolt 15 and a nut 15a.

The vertical part 14a of the bracket 14 is preferably formed in the shape of a crank, that is, its vertical central part 1a.
4c is formed in a crank shape so as to project from the rear side of the mullion 2 to the inside of the room so as to be apart from the rear surface of the mullion 2 by an appropriate size enough to receive the head of the bolt of the bolt nut 9.
2 is fixed to the mullion 2 by bolts 15 and nuts 15a at the upper and lower portions of the central portion as shown in FIG.
In this case, the bolt 14 is connected to the fastener 4 of the slab 5 at the central portion 14c. Therefore,
As can be seen in FIG.
c, a long hole 16a through which the bolt of the bolt nut 9 passes is formed on the left and right, and a hole 16b through which the bolt 15 passes above and below,
16c are formed.

A hole 16 through which an adjustment bolt 13 for level adjustment is formed is formed at an appropriate position of the horizontal portion 14b of the bracket 14, usually at the center thereof, and as shown in FIG. The nut 12 is attached to the. Thus, the adjustment bolt 13 engages the nut 12 through the hole 16 and is configured such that its tip abuts against the top surface of the fastener-4.

Another feature of the present invention resides in the attachment of the bracket 14 to the back of the mullion 2. That is, the bracket 14
Are attached to the mullion 2 at two places, the upper part and the lower part of the vertical part 14a, and as shown in FIGS. 4 and 5,
The width dimension s ′ slightly larger than the facing width s (FIG. 6) of the head 15b of the mounting bolt 15 is provided inside the back surface of the mullion 2.
(A band-shaped recess) 2a is formed, and the mullion 2 corresponding to the upper and lower portions of the vertical portion 14a of the bracket 14 is formed.
Each of the mounting portions has a rectangular hole 17 in the area of the groove 2a and a vertically long hole 18 following the hole 17 on the upper side thereof.

The width dimension S 'of this rectangular hole 17 is the same as the width of the groove 2a, that is, slightly larger than the facing width S of the head of the bolt 15, so that the head of the bolt 15 passes through the hole 17. Although it is possible, the rotation of the bolt 15 is prevented by fitting the head of the bolt 15 into the groove 2a. The length k 'of the rectangular hole 17, that is, the dimension in the up-down direction is formed slightly larger than the maximum width k of the head of the bolt 15 (FIG. 6). The width dimension d 'of the long hole 18 is slightly larger than the diameter d of the shaft portion (screw portion) of the bolt 15, and the length may be an appropriate size.

At the time of mounting the bracket 14 to the mullion 2, the head 15b of the bolt 15 is inserted into the hollow portion of the mullion 2 through the corresponding rectangular hole 17 of the mullion 2 at each mounting portion, and as shown by an arrow in FIG. Move along the long hole 18 to the upper end. At this time, since the rotation of the bolt 15 is prevented by fitting the facing portion of the head of the bolt 15 into the groove 2a of the mullion 2, the bracket 14 of the bracket 14 is inserted with the connecting bolt 9 passed through each hole 16a. Holes 16b, 1
6c can be inserted into the corresponding bolt 15 and fastened with the nut 15a.

Although hexagonal bolts are used as the bolts 15 and the nuts 15a in the illustrated example, it is apparent that square bolts may be used in some cases. Further, in the operation of passing the head of the bolt 15 through the rectangular hole 17 and engaging with the concave groove 2a, as shown in FIG. It is convenient if the material 19 is inserted and the end face of the head comes into contact with the guide material when the head of the bolt 15 is inserted. Since the guide member 19 is removed after the bracket 15 is fixed by tightening the nut 15a, the guide member 19 can be used repeatedly.

The connection between the bracket 14 and the fastener 4 fixed to the mullion 2 by the bolt 15 and the nut 15a is performed by connecting the bolt 9 previously fitted into the hole 16a of the bracket 14 to the hole provided in the fastener 4 as described above. Let it fit
This is done by tightening with a nut 9a. If necessary, a square hole or recess for receiving the head of the bolt 9 may be provided at a corresponding position of the mullion 2, or a hole or recess for preventing the bolt 9 from rotating may be provided on the side of the bracket 14.

In the above embodiment, the groove 2a extending in the vertical direction is provided inside the back surface of the mullion 2, but if necessary, the groove may be replaced with the same area of the mullion 2 as shown in FIG. May be provided with a pair of ridges 20. in this case,
The interval between the ridges is slightly larger than the facing width s of the head 15b of the bolt 15 (s '), and a rectangular hole 17 having the same width dimension as the interval s' is formed in the area between the ridges, An elongated hole 18 having a width slightly larger than the diameter d of the shaft of the bolt 15 is formed above the hole.

In the case where the pair of ridges 20 are provided inside the back surface of the mullion 2 in this manner, similarly to the case of the concave groove 2a, the head of the bolt 15 is inserted into the mullion 2 through the rectangular hole 17. The rotation is prevented by being fitted between the pair of ridges 20, and the bracket 14 is attached to a predetermined position on the back surface of the mullion 2.

In the embodiments described above, the bracket 14 is attached by the rectangular hole 17 and the long hole 18 provided on the back surface of the mullion 2, but in some cases, as shown in FIGS. The hole 16b of the bracket 14 and the hole 1
The nut 22 may be fixed by welding at the same interval as the interval between the nuts 6c, and the internal thread 23 may be formed at an appropriate position between the nuts.

As shown in FIG. 11, such a back plate 21 is inserted into the hollow portion of the mullion 2 and arranged at the position where the bracket 14 is mounted.
Then, the bolt 15 is engaged with the corresponding nut 22 of the back plate 21 through a hole previously formed in the mounting portion on the back surface of the mullion, and the bracket 14 is mounted by being tightened.

Still another feature of the present invention is the bracket 14
Is composed of a single angle material, and the adjusting bolt 13
2 and 3, a pair of ridges 25 are formed at predetermined intervals on the lower surface of the horizontal portion 14b of the bracket 14, and as shown in FIGS. The nut 12 for the adjustment bolt 13 is installed between the strips. The ridge 25 is formed from one end to the other end of the horizontal portion 14b, a round hole 16 is formed at the center thereof, and the nut 12 is coaxially fitted between the ridges 25 below the round hole.

The interval t 'between the ridges 25 is slightly larger than the facing width t of the nut 12, so that the nut 12 is fitted between the ridges 25 at the facing position as shown in FIG. It is configured not to rotate. In addition, protrusion 25
Is formed at the same time as the material of the bracket 14 is extruded, so that no special effort or process is required to provide it.

In another embodiment, as shown in FIG. 13, a concave groove (a band-shaped recess) 26 is used instead of the above-mentioned ridge 25.
Is formed. The concave groove 26 is also formed on the lower surface of the horizontal portion 14b of the bracket 14, and its width dimension is slightly larger than the facing width t of the nut 12, and a round hole 16 is formed at the center of the concave groove 26. The nut 12 is fitted under the hole 16. The formation of the ridge 25 or the concave groove 26 enables the fitting of the nut 12 by fitting without welding, as shown in FIGS. 2 and 13, and the adjusting bolt 13 is engaged with the nut. The level of the mullion 2 is adjusted by abutting the lower end of the bolt against the top 4a of the fastener.

The vertical portion 14a of the bracket 14 may be straight as shown in FIG. 13. In this case, when the bracket 14 moves up and down together with the mullion 2, the mounting bolt 15 or the nut 15a is used. Must be in a dimensional relationship that does not contact the fastener-4. If the vertical portion 14a of the bracket is formed in a crank shape and attached with bolts 15 above and below the central portion 14c, the above-mentioned contact can be avoided, and the vertical dimension of the vertical portion 14c can be made relatively small. And the bending moment generated in relation to the adjusting bolt is relatively small, which is advantageous in strength.

[0027]

As described above, in the curtain wall mounting structure according to the present invention, a single right-angled bracket is fixed to the back of the mullion, and the bracket is connected to the fastener of the slab. Since only two brackets conventionally used are required and the bolt for level adjustment can be attached to the horizontal portion of the bracket, the conventional angle material and its welding work are not required, so that the mounting work is easy. And save costs. In addition, there is an advantage that the bracket can be attached even if the expected size of the mullion is small.

By forming the vertical portion of the right-angle bracket attached to the back of the mullion into a crank shape,
The mounting bolts and nuts can be easily prevented from coming into contact with the fastener on the slab side, which is advantageous in terms of mounting and strength of the bracket, and the vertical dimension of the vertical portion of the bracket can be made relatively small. .

By providing a longitudinal groove inside the back of the mullion and providing a square hole in the bracket mounting portion on the back and a long slot following it in the area of the groove, the mounting bolt is provided with Since the head can be properly installed on the back of the mullion and the mounting bolts are located on the top of the slot, the vertical load of the curtain wall via the mullion can be applied to the top of the slot. Since it acts on the mounting bolt, there is no deviation. Also, there is no need to use a back plate or the like to which the nut is welded, and the bracket can be installed with a simple configuration.

Further, by providing a pair of projections on the inside of the back surface of the mullion in place of the concave groove, the bracket can be appropriately attached to the mullion with a simple structure.

Attach a right angle bracket to the back surface of the mullion, form a pair of ridges on the lower surface of the horizontal portion of the bracket, and fit a nut for level adjustment bolt between the ridges. Thereby, welding of the nut is not required, and the installation structure of the adjustment bolt is simplified and facilitated.

Attach a right-angled bracket to the back of the mullion, form a groove in the lower surface of the horizontal portion of the bracket in place of the pair of protrusions, and fit and attach a nut to the groove. This also simplifies and facilitates the installation structure of the adjustment bolt.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of a curtain wall mounting structure according to the present invention.

FIG. 2 is a longitudinal sectional view of the embodiment shown in FIG.

FIG. 3 is a perspective view showing a preferred example of a bracket used in the present invention.

FIG. 4 is a cross-sectional view showing a relationship between a mullion and a bracket mounting bolt in this mounting structure.

FIG. 5 is an elevational view of the back surface of the mullion in this mounting structure as viewed from inside.

6A and 6B show an example of a mounting bolt, wherein FIG. 6A is a side view, and FIG. 6B is an end view.

7A and 7B show a relationship between a mullion and a mounting bolt when the bracket is mounted in the mounting structure, wherein FIG. 7A is a longitudinal sectional view, and FIG.

FIG. 8 is a cross-sectional view showing a relationship between a mullion and a mounting bolt in another embodiment of the mounting structure.

FIG. 9 is a transverse sectional view showing still another embodiment of the mounting structure.

10 shows a back plate with a nut used in the embodiment shown in FIG. 9, (a) is a side view thereof, and (b) is an elevation view.

FIG. 11 is an elevational sectional view showing a main part of the embodiment shown in FIG. 9;

12A and 12B show a horizontal portion of a bracket used in this mounting structure, wherein FIG. 12A is a bottom view and FIG. 12B is a partial side view.

FIG. 13 is a longitudinal sectional view showing still another embodiment of the mounting structure.

FIG. 14 shows an example of a curtain wall as a whole, in which (a) is a front view and (b) is a longitudinal sectional view.

FIG. 15 is a cross-sectional view showing a conventional curtain wall mounting structure.

FIG. 16 is a longitudinal sectional view showing a conventional curtain wall mounting structure.

[Explanation of symbols]

2: mullion, 2a: concave groove of mullion, 4: fastener, 5: slab, 12: nut, 13: adjusting bolt, 1
4: bracket, 14a: vertical part of bracket, 14
b: horizontal part of bracket, 15: mounting bolt, 15a:
Nut of mounting bolt, 17: square hole, 18: long hole, 2
0: ridge of mullion, 25: ridge of horizontal part of bracket, 26: concave groove of horizontal part of bracket

Claims (6)

[Claims] A bracket fixed to a mullion of a curtain wall and a fastener fixed to a slab of a structure.
The bracket is made of a single right-angled angle material and is attached to the back of the mullion with a bolt and a nut at a vertical portion thereof. And a nut engaged with an adjustment bolt configured to abut against the top of the fastener is provided at a horizontal portion of the angle member. 2. A vertical portion of the bracket is formed in a crank shape such that a central portion is separated from a back surface of the mullion, and is fixed to the mullion at upper and lower portions of the central portion, and a bolt and nut are provided at a central portion of the bracket. 2. The curtain wall mounting structure according to claim 1, wherein the curtain wall is connected to the fastener. 3. A concave groove extending in the vertical direction and having a width slightly larger than the facing width of the head of the bolt is formed inside the back surface of the mullion, and the bracket is formed at upper and lower portions of a vertical portion thereof. A rectangular hole and a slot extending therefrom are formed in each of the mounting portions corresponding to the upper and lower portions on the back surface of the mullion in the area of the groove, and are attached to the mullion in a lateral direction of the rectangular hole. The width of the elongated groove is the same as the width of the concave groove, and the width of the elongated hole is slightly larger than the diameter of the shaft of the bolt. Mounting structure for curtain walls. 4. A pair of ridges are formed on a back surface of the mullion at a vertical interval and slightly larger than a facing width of a head of the bolt, and the bracket is formed at upper and lower portions of a vertical portion of the mullion. At the same time, a rectangular hole and a long hole following the rectangular hole are formed in the area between the ridges at each of the mounting portions corresponding to the upper and lower portions on the back surface of the mullion, The width of the elongated hole is the same as the interval between the ridges, and the width of the elongated hole is slightly larger than the diameter of the shaft portion of the bolt. Mounting structure for curtain walls. 5. A pair of ridges are formed on the lower side surface of the horizontal portion of the bracket at intervals slightly larger than the facing width of the nut with which the adjustment bolt engages, and the nut is fitted between the ridges. The curtain wall mounting structure according to claim 1 or 2, wherein the curtain wall is mounted. 6. A groove having a width slightly larger than a facing width of a nut with which the adjustment bolt engages is formed on a lower surface of a horizontal portion of the bracket, and the nut is fitted into the groove. The curtain wall mounting structure according to claim 1 or 2, wherein: