JPH0634978Y2 - Curtain wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to the construction of a curtain wall, in particular, its glass frame.

[Conventional technology]

In a conventional curtain wall glass frame, for example, an aluminum cuboid attached to the skeleton is used as the left and right vertical frames, and an aluminum frame bolted to the steel frame for the base attached to the skeleton at multiple locations is used as the upper and lower frames. Is used as. The bolt is inserted into a loose hole provided in the aluminum frame in advance and fixed to the steel frame in order to escape the expansion due to thermal expansion of the aluminum frame having a linear thermal expansion coefficient larger than that of the steel frame.

With this structure, expansion and contraction of the aluminum frame due to temperature changes during the four seasons is effectively absorbed.

[Problems to be solved by the device]

However, when the aluminum frame is exposed to high temperatures (400-500 ° C or higher) such as during a fire, the upper and lower frames show abnormal elongation that cannot be seen in normal times, and the loose holes can no longer absorb this. It could be deformed or destroyed.

As a result, a gap was created between the glass and the aluminum frame, and a fire could invade from here, leading to a secondary disaster.
In the worst case, the aluminum frame itself could fall off, and eventually the glass could fall off, leading to a larger disaster. Such a phenomenon was particularly remarkable when the opening of the glass window was wide in the left-right direction and the upper and lower frames were long.

The present invention has been made in order to solve such a conventional problem, and there is no fear of deformation or destruction due to high temperature such as a fire. Therefore, a gap is generated between the glass and the glass falls off. It is an object of the present invention to provide a curtain wall having upper and lower frames of glass that is free from the risk of causing the above.

[Means for Solving the Problems]

As shown in FIG. 1, the curtain wall provided by the present invention includes an aluminum upper frame F ₁ supported by a steel upper base frame Fa and an aluminum upper frame Fb supported by a steel lower base frame Fb. A curtain wall having a lower frame F ₂ made of glass as a lower frame and an upper frame, the upper base frame Fa and the lower base frame Fb.
The central part of the frame Fa, Fb is supported by the skeleton at a rotation fulcrum that allows left and right rotation, and the left and right ends of the upper base frame Fa and the lower base frame Fb are the lengths of the frames Fa, Fb. The frame is supported by a moving fulcrum that allows expansion and contraction in the vertical direction, and the central portions of the upper frame F ₁ and the lower frame F ₂ are rotation fulcrums that enable left and right rotation of the frames F ₁ and F ₂ , respectively. Supported on the upper base frame Fa and the lower base frame Fb, the left and right ends of the upper frame F ₁ and the lower frame F ₂ are respectively movable fulcrums that enable expansion and contraction in the length direction of each frame F ₁ , F _2. It is supported by the upper base frame Fa and the lower base frame Fb.

[Action]

(1) The upper and lower base frames Fa and Fb have the center of rotation as the fulcrum and the left and right ends of the frame serve as the fulcrum of movement. The elongation can be released evenly to the left and right of the rotation fulcrum. At the same time, the warp and distortion of the upper and lower base frames Fa and Fb due to the vertical expansion during the thermal expansion of the frame can be absorbed by the left and right rotation of the base frames Fa and Fb.

(2) on the aluminum, the lower frame F _1, F ₂ is its central rotation fulcrum, left, since the right both end portions has a mobile fulcrum on the time of thermal expansion, the lower frame F ₁ , the length direction of the elongation of the F ₂ can escape equally in the lateral direction around the rotation fulcrum. At the same time, the warp and distortion of the upper and lower base frames F ₁ and F ₂ due to the warp and distortion during thermal expansion of the upper and lower base frames Fa and Fb can be absorbed by the left and right rotation of the same frames F ₁ and F ₂ .

(3) on a lower frame F _1, F _2, the glass fitted thereto, around the central portions of the frame, since the extend on the left and right, upper, and lower frame F _1, F ₂ The difference in the amount of elongation due to the thermal expansion of glass can be reduced.

(4) Although the coefficient of linear thermal expansion of steel upper and lower base frames Fa and Fb is different from that of aluminum upper and lower base frames F ₁ and F ₂ ,
Since the upper and lower frames F ₁ and F ₂ move left and right following the expansion of the upper and lower base frames Fa and Fb in the lengthwise direction, the amount of movement of the upper and lower frames F ₁ and F ₂ is reduced. be able to.

By the above operations (1) to (4), the upper and lower frames due to the difference in the coefficient of linear thermal expansion between the upper and lower base frames (steel frames) Fa and Fb and the upper and lower frames (aluminum frames) F ₁ and F ₂ It is possible to prevent deformation and destruction of F ₁ and F ₂ . Also, due to the above deformation and destruction, the upper and lower frames
It is possible to prevent a gap from being generated between F ₁ and F ₂ and the glass, and also to prevent the glass from coming off and falling.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a framework of a curtain wall according to an embodiment of the present invention by a support structure for each frame member. FIG. 2 is a front view of the curtain wall of the embodiment corresponding to FIG. 1, and FIGS. 3 to 6 specifically show the detailed structure of the curtain wall of FIGS. 1 and 2.

First, the schematic structure of the curtain wall will be described with reference to FIGS. In both figures, 1 is an opening in which the glass G is fitted,
Reference numeral 2 is a waist panel portion in which a waist panel P is stretched, H ₁ is cubic, and H ₂ is neutral. The left side upright H ₁ is composed of the left vertical frame F ₃ of the opening 1 and the left upright frame F ₆ of the waist panel section 2, and the right side upright H ₁
It is composed of a right freshly frame F ₄ and the right fresh frame F ₇ of the waist panel portion 2 of the opening 1. The neutral H ₂ is also the vertical frame F ₅ of the opening 1. F ₁ and F ₁ are the upper frames, F ₂ and F ₂ are the lower frames, and Fa is the upper frames F ₁ and F ₁
Is a lower base frame to which F is attached, and Fb is a lower base frame to which the lower frames F ₂ and F ₂ are attached.

Among the above frame, top, bottom base frame Fa, Fb is made steel, and other frame F ₁ to F ₇ is made of aluminum.

The frame of glass G is attached to the upper and lower base frames Fa and Fb,
Lower frames F ₁ , F ₁ , F ₂ , F ₂ , left and right vertical frames F ₃ , F _4, and vertical vertical frames F ₅
It is composed of and. The frame of the waist panel P is composed of upper and lower base frames Fa and Fb, and left and right vertical frames F ₆ and F ₇ . The frame of the glass G and the frame of the waist panel P are alternately and repeatedly arranged in the vertical direction and arranged in a line in the horizontal direction, whereby the entire curtain wall is formed.

Next, a detailed configuration will be described with reference to FIGS. In addition,
Since the cubic H ₁ is symmetrically arranged around the neutral H ₂ and has the same structure on the left and right, only the left half including the neutral H ₂ is shown in the drawing. The following description will be made mainly for the left half, and the description for the right half will be limited to the required range.

In the figure, parts corresponding to the respective constituent elements in FIGS. 1 and 2 are designated by the same reference numerals. T ₁ is a pillar attached to a concrete frame (not shown), and T ₂ is a stud similarly attached to the concrete frame, both of which are H-shaped steel.
Both T ₁ and T ₂ are the structure referred to in this invention.

The left vertical frame F ₃ is the cubic H ₁ of the opening 1. As shown in FIGS. 3 and 6, the upper end portion is attached to the pillar T ₁ with a bolt / nut v ₁ via a bracket (arm bracket) b ₁ . The left vertical frame F ₃ is rotatable in the front-rear direction around the bolt / nut v ₁ . That is, the upper end of the left vertical frame F ₃ is supported by the rotation fulcrum.

In addition, the bracket (bracket) in the embodiment is a shape obtained by bending a strip-shaped steel plate into an L-shape, and is called an angle piece. Hereinafter, this is simply called a bracket.

The lower end of the left vertical frame F ₃ is below the left vertical frame F ₆ as shown in Figs. 4 and _6, and is a long plate-like joint bar (connecting rod).
It is attached through 3. The left vertical frame F ₆ is the upright H ₁ of the waist panel portion 2, and its cross-sectional shape is the same as the left vertical frame F ₃ .

The upper end of the joint bar 3 has an upper left vertical frame.
It is inserted into the groove m of F ₃ from below and is fixed to the same frame F ₃ , and at the lower end, it is in the vertical direction in the groove m of the left vertical frame F ₆ coming downward, that is, the left vertical frame F. It is inserted so that it can move in the length direction of ₃ . Therefore, the lower end of the left vertical frame F ₃ is supported by the movement fulcrum.

The upper end of the left freshly frame F ₆ is like the first 4,6 view, bracket b
_It is attached to the pillar T ₁ through ₂ with bolts and nuts v ₂ . The left vertical frame F ₆ is rotatable in the front-rear direction around the bolt / nut v ₂ . That is, the left vertical frame
The upper end of F ₆ is supported by a rotation fulcrum.

The lower end of the left vertical frame F ₆ is located below the left vertical frame F ₃ as shown in Figs. 3 and 6, and is a long plate-like joint bar (connecting rod).
It is attached via 4.

The upper end of the joint bar 4 is a left vertical frame that comes to the upper side.
It is inserted into the groove m of F ₆ from the lower side and fixed to the same frame F ₆ , and the lower end is in the groove m of the left vertical frame F ₃ which comes to the lower side in the vertical direction, that is, the left vertical frame F ₆ It is inserted so that it can move in the longitudinal direction. Therefore, the lower end of the left vertical frame F ₆ is supported by the movement fulcrum.

The upper base frame Fa is a so-called lightweight C-shaped steel, and its central portion is attached to the stud T ₂ via a fastener (coupling metal fitting) f ₁ and a bracket b _3, as shown in FIG. That is, the fastener f ₁ is fixed to the stud by bolts and nuts v ₇ fixed to the stud T ₂ , and the bracket b ₃ is fixed to the fastener f ₁
Are fastened with bolts and nuts v ₃ , and the bracket b ₃ is welded to the upper base frame Fa. The bolts and nuts v ₃ are tightened to such an extent that the upper base frame Fa about the bolts and nuts v ₃ can rotate in the left-right direction. Therefore, the central portion of the upper base frame Fa is supported by the rotation fulcrum referred to in this invention.

The fastener described in the embodiment has a shape obtained by bending a strip-shaped steel plate into an L-shape, and is called an angle piece. Hereinafter, this is simply referred to as a fastener.

As shown in FIG. 3, the left end of the upper base frame Fa has a fastener f ₂
And arrow (left and right) attached to post T ₁ via bracket b ₄
It can be moved in any direction. That is, the fastener f
₂ is fixed to the same pillar with bolts and nuts v ₈ fixed to the pillar T ₁ , the bracket b ₄ is fixed to the fastener f ₂ with bolts and nuts v ₄ , and the bracket b ₄ is welded to the upper base frame Fa. There is. The bolt holes of bracket b ₄ are loose holes that are long in the left and right. The bolts and nuts v ₄ are fastened to allow movement (expansion and contraction) in the arrow (left and right) direction, that is, in the length direction of the upper base frame Fa. Therefore, the left end portion of the upper base frame Fa is supported by the movement fulcrum referred to in this invention.

The lower base frame Fb has the same structure as the upper base frame Fa and is attached to the pillar T ₁ and the stud T ₂ . Therefore, the lower base frame is supported by the rotation fulcrum, and the left end is supported by the movement fulcrum.

The upper frames F ₁ and F ₁ are sash frames having a quadrangular cross section, and are attached to the lower side of the upper base frame Fa side by side on the left and right of the vertical frame F ₅ , as shown in FIGS. The lower frames F ₂ and F ₂ are similarly attached to the upper side of the lower base frame Fb.

The central portions of the upper and lower frames F ₁ and F ₂ are fixed to the upper and lower base frames Fa and Fb with three screws n ₁ ... The screw holes provided in the upper and lower frames F ₁ and F ₂ are slightly larger than the thickness of the screw n ₁ . Then, on with screws n _1, stop of the lower frame F _1, F ₂ has a tightening enough to allow lateral rotation of the frames F _1, F _2.

For this reason, the upper and lower frames F ₁ and F ₂ can rotate slightly to the left and right around the mounting portion formed by the three screws n ₁ . In this sense, the central portions of the upper and lower frames F ₁ and F ₂ are supported by the rotation fulcrum referred to in this invention.

Furthermore, the left end portion of the lower frame F _1, F ₂ is the left-right direction, i.e. on, the long loose hole h in the longitudinal direction of the lower frame F _1, F _2, screws n ₂
It is stopped on the upper and lower base frames Fa and Fb.

The upper with screws n _2, stop of the lower frame F _1, F ₂ is the left-right direction of each frame F _1, F _2, that is, a tightening of the extent to allow movement in the longitudinal direction (stretching). Therefore, the upper and lower frames
The left ends of H ₁ and H ₂ are supported by the movement fulcrum referred to in this invention.

As shown in FIG. 6, the middle vertical frame F ₅ has bolts and nuts at its upper end portion at the center of the upper base frame Fa via the bracket b _5.
It is stopped by v ₅ , and the lower end is fixed by bolts and nuts v ₆ to the center of the lower base frame F ₆ via the bracket b ₆ . On the vertical frame F ₅ in inserted through the bolt and nut v _5, v _6, the hole of the lower end portion has a long loose hole in the longitudinal direction of the frame F _5.
Therefore, the upper and lower ends are supported by the movement fulcrum referred to in this invention.

In addition, 5 and 6 are ridges (FIGS. 4 and 6), 7 is a cover of the pillar T ₁ , 8 is a ceiling panel, and 9 is a set board.

Next, the operation based on the configuration of the glass frame will be described.

(1) The upper and lower base frames Fa and Fb are supported by the frame at the center of the fulcrum and the left and right ends of the upper and lower base frames Fa and Fb are supported by the frame. The elongation in the length direction can be evenly released to the left and right around the rotation fulcrum. At the same time, the warp and distortion of the upper and lower base frames Fa, Fb due to the vertical expansion during the thermal expansion of the frame are
It can be absorbed by left and right rotation.

(2) The upper and lower frames F ₁ and F ₂ are supported by the upper and lower base frames Fa and Fb, respectively, in the center of which are rotation fulcrums, and the left and right ends of the upper and lower frames F ₁ and F ₂ are movement fulcrums, respectively. , Fb, the lengthwise expansion of the upper and lower frames F ₁ , F _{2 due} to thermal expansion can be evenly dissipated to the left and right of the rotation fulcrum. At the same time, the warp and the warp of the upper and lower base frames Fa and Fb due to the thermal expansion and the warp of the upper and lower frames F ₁ and F ₂ can be absorbed by the left and right rotation of the same frames F ₁ and F _2. .

(3) Since the upper and lower frames F ₁ and F ₂ and the glass G fitted to them are arranged to extend to the left and right around the center of these frames, the upper and lower frames F ₁ and F ₂ and the glass G It is possible to reduce the difference in the amount of elongation due to the thermal expansion of.

(4) The upper and lower frames F ₁ and F ₂ are rotation fulcrums at the center of the upper and lower frames.
Since it is supported at the intermediate position (middle) between the rotation fulcrum and the movement fulcrum of the lower base frames Fa and Fb, even if the upper and lower base frames Fa and Fb expand due to thermal expansion, they move according to this and move as a whole. The extension of 1/4 of the length is the amount of movement of the upper and lower frames F ₁ and F ₂ .
That is, the horizontal movement of the upper and lower frames F ₁ and F ₂ can be suppressed to the minimum.

(5) Since the left and right vertical frames F ₃ and F ₄ and the intermediate vertical frame F ₅ are supported by the skeleton at the rotation fulcrum and the moving fulcrum, the expansion at the time of thermal expansion can be escaped to the moving fulcrum side. .

As is clear from the operations (1) to (5) above, in this embodiment, the upper and lower frames made of aluminum having a large coefficient of linear thermal expansion.
F _1, F ₂ and on the small steel having linear thermal expansion coefficient, it is possible to escape the lower base frame Fa, elongation due to thermal expansion of Fb independently. For this reason, it is possible to prevent the upper and lower frames F ₁ and F _{2 from being} deformed and destroyed due to the difference in linear thermal expansion coefficient between the base frames Fa and Fb.

Therefore, also due to the above deformation and destruction, the upper and lower frames
A gap can be prevented from occurring between F ₁ and F ₂ and the glass G, and the glass G can be prevented from dropping.

[Effect of device]

As described above, according to the present invention, the elongations of the upper and lower frames F ₁ and F ₂ and the upper and lower base frames Fa and Fb in the glass frame at the time of thermal expansion are determined as described above. It is possible to independently escape to the left and right ends around the center, and the influence of the body extension on the upper and lower base frames Fa and Fb and the warp and distortion of the upper and lower base frames Fa and Fb. minimal impact to the lower frame F _1, F _2, and on, it is possible to reduce the difference of the lower frame F _1, F ₂ and elongation of the glass.

Therefore, according to this invention, there is no risk that the upper and lower frames F ₁ and F ₂ having a larger coefficient of linear thermal expansion than the upper and lower base frames Fa and Fb will be deformed or destroyed by a high temperature such as a fire. Therefore, it is possible to obtain a curtain wall in which there is no possibility that a gap will be created between the upper and lower frames F ₁ and F ₂ and the glass, or the glass will fall off.

[Brief description of drawings]

FIG. 1 is a structural view showing the framework of a curtain wall according to an embodiment of the present invention with a supporting structure for each frame member, and FIG. 2 is a front view of the curtain wall of the embodiment, which corresponds to FIG. FIG. 3 is a sectional view taken along the line III-III in FIG. 2, and FIG. 4 is a sectional view in FIG.
IV-IV sectional view, FIG. 5 is a VV sectional view of FIG. 2, and FIG. 6 is a VI-VI sectional view of FIG. F ₁ …… Top frame F ₂ …… Bottom frame F ₃ …… Left vertical frame (cubic) F ₄ …… Right vertical frame (cubic) F ₅ …… Mid vertical frame (cubic) Fa… … Upper base frame Fb …… Lower base frame

Front page continuation (72) Inventor Seiji Isoya 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Shiro Fukudome 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Within the construction company (72) Inventor Tetsuo Morishita 2-7-23 Kiba, Koto-ku, Tokyo Shin-Nigaru Co., Ltd. 56) References JP-A 61-169552 (JP, A) Actually open 62-201210 (JP, U) Actually open 60-108617 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. An aluminum upper frame F ₁ supported by a steel upper base frame Fa, and an aluminum lower frame F ₂ supported by a steel lower base frame Fb are placed on top and bottom of glass. A curtain wall having a frame, the upper base frame Fa and the lower base frame Fb
The central part of the frame Fa, Fb is supported by the skeleton at a rotation fulcrum that allows left and right rotation, and the left and right ends of the upper base frame Fa and the lower base frame Fb are the lengths of the frames Fa, Fb. The frame is supported by a moving fulcrum that allows expansion and contraction in the vertical direction, and the central portions of the upper frame F ₁ and the lower frame F ₂ are rotation fulcrums that enable left and right rotation of the frames F ₁ and F ₂ , respectively. Supported on the upper base frame Fa and the lower base frame Fb, the left and right ends of the upper frame F ₁ and the lower frame F ₂ are respectively movable fulcrums that enable expansion and contraction in the length direction of each frame F ₁ , F _2. A curtain wall that is supported by an upper base frame Fa and a lower base frame Fb.