JPH0416645A - Curtain wall - Google Patents

Abstract

PURPOSE:To improve load bearing property by providing a supporting frame and a supporting means and fixedly securing outer wall plates on the frame, sealing between end parts of the outer wall plates through a first seal means, and sealing the outer circumference of a frame with the neighboring part through a second seal means. CONSTITUTION:A supporting frame 10 to support many outer wall plates 12 is fitted to H-section steel 14 of a building frame, a pair of vertical members 16 are arranged in parallel with each other, horizontal members 18, 19 are horizontally mounted over the upper and lower ends of the vertical members 16, hence the whole is formed into a framework. Cushioning rubber material is laid between hooks 69, 86 and a holding groove 12A, and seal material 91 and seal backup material 92 are filled between end parts of neighboring outer wall plates 12. A first seal means is formed out of the seal material 91 and a second seal means is formed out of the rubber gasket 68 and the like, and acceptance from between the end parts of the outer wall plates 12 is double- sealed. Hereby, watertightness and light weight can be insured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a curtain wall that is used as a non-load-bearing wall and is provided in the front of a frame of a structure to partition a space.

[Conventional technology]

Generally, curtain walls are made of precast concrete slabs with stones poured into them.

However, the precast concrete slab is heavy, and the production mold must be changed when producing a different type, making it difficult to respond flexibly. In addition, curtain walls, in which a frame is attached to the building frame and thin external wall materials are directly fixed to the frame, are easily destroyed when external forces such as earthquakes or typhoons act, and there are also problems in ensuring watertightness.

[Problem to be solved by the invention]

In consideration of the above facts, the present invention aims to provide a curtain wall that is lightweight, easy to manufacture, and can reliably withstand external forces such as earthquakes and typhoons.

[Means to solve the problem]

The invention according to claim 1 of the present application includes a support frame made of a steel frame, a support means that allows the support frame to move relative to the support frame in a vertical plane when a predetermined load is applied to the structure frame, and a support frame that is fixed to the support frame. a plate member that closes the inside of the frame, and an exterior wall plate disposed on the opposite side of the support frame from the building;
holding means attached to the frame for holding the exterior wall board; first sealing means for sealing between ends of the exterior wall board; and second sealing means attached to the frame for sealing the outer periphery of the frame with an adjacent portion. and sealing means.

Therefore, in the present invention, the support frame, plate members, and outer wall panels, which constitute most of the weight of the curtain wall, can be made lightweight. Further, the support frame can be easily manufactured by cutting a steel frame material or the like into a predetermined size and then connecting the parts in a frame shape. The exterior wall panels can be made by cutting stone into relatively thin pieces, and there are no manufacturing difficulties. The support frame and plate member may be made of steel.

Furthermore, the support frame transmits external forces such as lateral wind force to the structure frame to provide reliable support, and in response to horizontal external forces such as earthquakes, the support means supports the support frame relative to the structure frame in a vertical plane. Absorb as movable. This support means holds the support frame in two positions on the left and right near the upper end with respect to the structure frame.
By supporting the vertical load at a point and supporting the structure frame so that one of these support points can rotate relative to the other, the support frame can absorb horizontal loads by swinging around the support point. do. Further, the support frame can be attached so as to be movable relative to the structure frame in the horizontal direction, and horizontal displacement can also be absorbed by this.

In the invention of claim (2) of the present application, the support means for supporting the support frame to the structure frame has an arm projecting laterally from the structure frame in the form of a cantilever, and the arm is It enters the inside of the support frame, and the part that goes inside supports the load of the support frame. Therefore, the load-bearing portion of the support frame is located inside the support frame, and as a result, the thickness of the curtain wall in the interior and exterior directions of the building can be reduced and the living space can be expanded.

In the invention of claim 3 of the present application, a precast concrete bar is attached to the outer peripheral side of the support frame, and a means for holding an external wall plate is provided on this bar. According to this invention, the precast concrete bar has a uniform cross-sectional shape, and it can be cut into predetermined dimensions. This makes it possible to use a precast concrete bar that is cut to a predetermined size, compared to the case where the holding member is made from an extruded aluminum material. Manufacturing is easy and costs can be reduced.

In this case, when the support frame is a rectangular frame, the precast bars placed outside the vertical members of the support frame and the bars placed outside the horizontal members of the support frame may have different shapes. can.

The invention of claim (4) of the present application relates to the attachment of an exterior wall board to a support frame, and bolts are installed upright from a small arm that is attached to the support frame; In order to attach the hook, the hole is fitted into the bolt in a vertical direction, and after fitting, the outer wall plate can be easily attached to the support frame by screwing a nut from the tip of the bolt.

According to the invention of claim (5) of the present application, since the first and second sealing means together with the holding means form a closed space, rainwater etc. can infiltrate through the first sealing means arranged on the outside of the building. Even in the event of rain water being captured in this closed space,
There is no entry into the interior of the building through the second sealing means.

[Embodiments of the invention]

A first embodiment of the invention is shown in FIGS. 1-6. As shown in FIGS. 2 and 3, in the curtain wall of this embodiment, a large number of outer wall panels 12 are supported on a support frame 10, and this support frame 10 is attached to an H-shaped steel 14 of a building frame.

As shown in FIG. 1, the support frame 10 has a pair of vertical members 16 arranged parallel to each other, and horizontal members 18 and 19 arranged horizontally between the upper and lower ends of these vertical members 16. The entire structure is shaped like a frame. A plurality of (three in this embodiment) horizontal members 22 are provided between the intermediate portions of the vertical members 16.
The overhang has been crossed and is parallel to the horizontal timbers 18 and 19.

The vertical members 16 and the horizontal members 18 and 19 are steel members having a rectangular cross section perpendicular to the longitudinal direction, and the horizontal member 22 has a rectangular cross section with a part of the lower surface cut out. Vertical material 16 is horizontal material 18.19
The depth dimension in the direction of the inside and outside of the building (in the direction of the arrow in Figure 1) is larger than that of the building.

However, these vertical members 16 and horizontal members 18, 19, and 22 are welded together so that their outer surfaces of the building are on the same plane. If necessary, as shown in FIG. 2, turnbuckle tension bars 24 connecting the corners of the vertical members 16 in a diagonal manner may be provided for reinforcement.

The weight acting on the support frame 10 is supported by an arm 26 fixed to the H-shape @14. These arms 26 are groove-shaped steel whose bases are welded to the H-shaped steel 14 and whose longitudinal directions are in the six directions of the arrows, with the groove-shaped open surfaces facing downward. As shown in FIG. 4, nuts 27 are welded to the tips of these arms 26, and support bolts 28 are screwed together with their axes perpendicular to each other.

The two upper arms are provided near both ends of the horizontal member 18, respectively, and have the role of supporting the H-shaped steel 14 with the weight acting on the support frame 10. By adjusting the amount of threading of these support bolts 28 into the nuts 27, the mounting heights of the left and right ends of the support frame 10 can be adjusted respectively.

As shown in detail in FIG. 4, the tip of the arm 26 corresponds to the lower surface of the horizontal member 18. This means that it has entered the inside of the support frame 10. Since the support portion of the support frame 10 is inserted inside the support frame IO in this way, the depth dimension (in the six directions of the arrows) for supporting the support frame 10 is extremely small.

Vertical plates 32 are welded to the upper ends of the vertical members 16, respectively. The shaded area in FIG. 1 shows the welded portion of the vertical plate 32 to the vertical member 16.

These vertical plates 32 are formed with elongated holes 33 extending in the vertical direction, through which mounting bolts 34 pass through from the outside of the building toward the inside. This mounting bolt 3
4 is inserted into a slot-like notch 37 of an angle member 36 fixed to the arm 26, and is screwed into a nut 39 fixed to a vertical piece of the angle member 36 via a washer 38. Furthermore, a circular hole 41 is formed in the angle member 36 adjacent to the elongated notch 37, and a nut 42 is welded thereto.

A push bolt 43 is screwed into this nut 42 from inside the building. The tip of this push bolt 43 is connected to the vertical plate 32.
is in contact with.

Therefore, by adjusting the amount of screwing of the mounting bolt 34 into the nut 39 and the amount of screwing of the push bolt 43 into the nut 42, the support frame 10 can be moved in the building depth direction (in the six arrow directions) as shown in FIG. Positioning is performed, and the load acting on the support frame IO in the building depth direction is applied to the mounting bolt 3.
4. H-shaped steel 1 via push bolt 43 and angle material 36
It is now transmitted to 4.

In addition, as shown in FIG. 1, the adjacent support frame 1
Mounting bolt 34 and push bolt 43 applied to both ends of 0
are attached to the same angle member 36.

As shown in FIG. 5, the support frame 10 can swing around the mounting bolts 34 (in the direction of arrow B in FIG. 1). In other words, when the support frame 10 receives a vertical load due to an external force such as an earthquake, the horizontal members 18
The support frame 1O can swing in the direction of arrow B around the mounting bolts 34 of. In this case the support frame 1
0 swings around the support point of either the left or right mounting bolt 34 of the horizontal member 19, the other mounting bolt 34 moves up and down within the elongated notch 37 of the angle member 36. In order to facilitate the swinging movement of the support frame 10, a washer 45 is inserted into the mounting bolt 34 on the surface in contact with the vertical plate 32, and the surface of the washer 45 in contact with the vertical plate 32 is made of fluorine resin or the like. A low-friction material is attached. Preferably, this washer 45 is welded to the head of the mounting bolt 34.

A horizontal plate 47 is welded to the upper end of the vertical member 16. A positioning bolt 48 is attached from this horizontal plate 47.
is erected, and a circular hole 49 for hanging is formed adjacent to it.

Further, a horizontal plate 51 is welded to the lower end of the vertical member 16. This horizontal plate 51 has a groove shape with both ends in the building depth direction bent downward, and has a positioning hole 52 through which the positioning bolt 48 of the horizontal plate 47 passes.

Therefore, the support frame 10 is assembled by inserting the positioning holes 52 of the horizontal plate 51 attached to the lower end of the support frame 10 into the positioning bolts 48 of the horizontal plate 47 fixed to the upper end of the support frame 10 arranged at the lower stage. The lower end of the support frame 10 is positioned at the upper end of the support frame 10 disposed in the lower stage, and is positioned in the depth direction of the building (in the six directions of arrows) and in the width direction perpendicular thereto.

However, the combination of the positioning hole 52 and the positioning bolt 48 is such that when the support frame 10 swings in the direction of the arrow B, the positioning bolt 48 is pulled out of the positioning hole 52 by the required amount to prevent the support frame 10 from swinging. enable.

A metal plate 56 is fixed to the surface of the support frame 10 on the outside of the building. This metal plate 56 is welded around the circumference to the vertical members 16 and horizontal members 18, 19, and 22, and closes the inside of the support frame 10.

A horizontal piece of an angle piece 61 is welded to the top surface of the horizontal piece 18, and a shape piece 62 is attached to the vertical piece. The mold material 62 is made of, for example, a mold material manufactured by extrusion molding of aluminum, and has a longitudinal direction in the horizontal direction and a vertical orthogonal cross section having the same shape. This mold material 6
2 is a mouth-shaped part 62 in which an opening facing toward the inside of the building is formed.
The head of the mounting bolt 65 is inserted into A, and the leg of this mounting bolt 65 is inserted into the circular hole 61A formed in the angle member 61.
The nut 6 penetrates through the hole and is fixed to the angle member 61.
6, the shape member 62 is fixed to the angle member 61.

The vertical piece 62B continuing from the U-shaped portion 62A covers the front surface of the horizontal member 18, and the lower end is provided with a sealing member 62B between the metal plate 56 and the vertical piece 62B.
7 is interposed.

Further, an upwardly open U-shaped portion 62C is formed at the upper part of the U-shaped portion 62A, and the base of the rubber gasket 68 is accommodated therein. The tip of this rubber gasket 68 has a thin loop shape and can be flexibly deformed.

As shown in FIG. 4, a similar shape member 62 is fixed to the horizontal member 19 upside down, and a rubber gasket 68 is similarly attached upside down. Therefore, the pair of rubber gaskets 68 are in close contact with the support frames 10 that are adjacent to each other in the vertical direction, so that the support frames 10 have a water-stopping function. The profile 62 has a small arm 62D extending from between the U-shaped portion 62A and the vertical piece 62B to the outside of the building, and a hook 69 constituting a holding means together with the profile 62 is fixed with a bolt 71. This hook 6
9 has an opening-shaped tip, and the tip is accommodated in a holding groove 12A formed on the outer periphery of the outer wall plate 12 to support both upper and lower ends of the outer wall plate 12.

A shape member 73 is also provided on the outside of the vertical member 16 of the support frame 10.
are fixed via angle members 74. This mold material 7
3 also has a U-shaped portion 73A, a horizontal piece 73B,
It has a U-shaped portion 73C and a small arm 73D, and a rubber gas nut 75 is accommodated in the mouth-shaped portion 73C. This rubber gasket 75 has a water-stopping function by elastically coming into close contact with the adjacent rubber gasket 75. Also small arm 73D
A hook 76 is fixed with a bolt 77 to the holding groove 12A.
The tip end portion is housed in the outer wall plate 12 to hold both sides of the outer wall plate 12 and perform positioning in the left and right direction.

As shown in FIG. 1, the upper end of the small arm 73C of the molding material 73 is extended as shown by the imaginary line and is brought into contact with the outside of both ends of the molding material 62, thereby forming a corner seal between the two ends of the molding material 62. The material is interposed between the left and right ends of the mold material 62 and the mold material 7.
The space between the upper and lower ends of 3 is sealed. Note that both ends of the rubber gaskets 68 and 75 are connected to each other so that the outer wall plate 12
It can be arranged in an endless shape around the .

As shown in Fig. 1.4.6, the profile 81 to be attached to the horizontal member 22 is attached to vertical pieces 81B, 81 at both upper and lower ends of a U-shaped portion 81A that accommodates bolts 83.
C is formed, and the space between it and the end of the metal plate 56 is sealed by a sealing material 84. In addition, a small arm 81D extending horizontally from the upper end of the U-shaped portion 81A has a rectangular portion 8.
1E is formed, and the head of the bolt 85 is accommodated therein.

The rectangular portion 81 of this bolt 85 is formed so that it can slide within the rectangular portion 81E in the longitudinal direction of the profile 81 (in the direction perpendicular to the plane of the paper in FIG. 6). The leg portion of the bolt 85 protruding upward from the rectangular portion 81E passes through the hook 86, and then a nut 87 is screwed into the leg portion.

This hook 86 has an insertion portion 86A formed at its tip on the outside of the building, and is inserted into the holding groove 12A.

Therefore, this hook 86 supports the load at the lower end of the outer wall board 12 and also positions the upper end.

In particular, the hook 86 can be attached to the profile 81 by simply inserting it onto the bolt 85 erected and then screwing the nut 87 on, making assembly extremely easy.

Note that a cushioning rubber material is interposed between the hook 69, 76, 86 and the holding groove 12A. Also, the adjacent outer wall board 12
A sealing material 91 and a sealing back-up material 9 are provided between the ends of the
2 is filled. Further, a fireproof covering material or a heat insulating material is attached to the back surface of the metal plate 56 as necessary.

As shown in FIGS. 4 and 5, drainage spaces 93 are defined between the sealing material 91 and the rubber gaskets 68, 75 by molded materials 62, 73, respectively, and are provided along the edges of the outer wall board 12. It communicates vertically and horizontally. Therefore, the sealing material 91 constitutes the first sealing means, and the rubber gaskets 68, 75 constitute the second sealing means, thereby doubly sealing against water intrusion from between the ends of the outer wall board 12.

Furthermore, even if the sealing material 91 is destroyed and water intrudes, the water is drained through the drainage space 93, so that water will not intrude into the inside of the building. Furthermore, in the drainage space 93, the distance between the tips of the hooks 69 and 76 on the outside of the building is narrow, and the distance between the small arms 62D and the small arms 73D is wide, so a depressurized space is formed, and the sealing material 91 is destroyed and infiltration occurs. As a result, the water flow is suddenly weakened, causing the rubber gasket 68.
The possibility of passing through 75 and entering the building is extremely low.

The assembly of this embodiment configured in this way is carried out on the support frame 1.
After manufacturing 0, metal plates 56 are welded to the outer side of the building of the support frame 10, respectively. Furthermore, the mold material 62.73.8
1 to the vertical material 1G and horizontal material 18 and 19, respectively.

Attach the rubber gasket 68.75 to the profile 62.73. Furthermore, the outer wall panels 12 are supported on the support frame IO via hooks 69, 76 and 86, respectively.

Horizontal plate 51 located at the lower end of the support frame 10
The positioning hole 52 is inserted into the positioning bolt 48, and the upper end of the vertical member 16 is mounted on the support bolt 28. Further, after passing the mounting bolt 34 through the vertical frame 32, the bolt 34 is positioned and attached to the nut 39 of the angle member 36.

In this way, the curtain wall of the present invention has a support frame 1
0 is formed from a thin steel plate, and the outer wall plate 12 is also relatively thin, so the weight is about ⅓ compared to a conventional precast concrete curtain wall, and it is easy to assemble.

Loads acting from the outside of the building to the inside due to wind pressure or the like are transmitted from the exterior wall board 12 to the support frame 10 via the hooks 69, 76 and 86. This support frame 10 is the fifth
As shown in the figure, since the vertical plate 32 is supported by the angle member 36, the H-shaped steel 1
4, and the lateral load is supported.

In addition, when a lateral load such as an earthquake acts on this curtain wall, the support frame 10 is attached to one of the mounting bolts 3.
4 in the direction of arrow B and is absorbed.

In addition, as already explained, the sealant 91 and the rubber gaskets 68 and 75 are used to prevent rainwater from entering between the outer wall panels 12.
The drainage space 93 forms a stepped seal and reliably prevents water from entering the inside of the building.

In addition, if a lateral load is applied during an earthquake, etc., the support frame 1
This load may be absorbed by moving the 0 horizontally relative to the structure body instead of by swinging.

In this case, the elongated notch 3 formed in the angle member 36
The positioning hole 52 formed in the horizontal plate 51 may also be formed in the shape of a long hole.

Next, FIGS. 7 to 9 show a second embodiment of the present invention.

In this embodiment, the shape material 10L' is made of precast concrete instead of the shape material 62.73 in the previous embodiment.
102 is used.

As shown in FIG. 9, the shape member 101 disposed outside the vertical member 16 has a substantially rectangular horizontal cross-sectional shape.
A notch 101A is formed on the opposite surface. Further, a bolt 105 projects horizontally from a core material 104 embedded in the shape material 101, and this bolt 105 is inserted into through holes 106 and 107 formed in the vertical material 16. Furthermore, the head of a positioning bolt 108 that is screwed into the vertical member 16 is in contact with this profile 101.

Therefore, by adjusting the amount of threading of this positioning bolt 108 into the vertical member 16, the distance between the vertical member 16 and the vertical member 16 can be adjusted. is fixed to.

After the nuts 109 are screwed together and fixed, reliable positioning is achieved by welding the angle members 111 previously fixed to the corners of the shape member 101 to the angle members 112 fixed to the vertical member 16. Further, a sealing material 113 is filled between the mold material 101 and the vertical material 16 to perform water-stopping work.

A rubber gasket 75 and a hook 115 are respectively arranged on the opposite side of the vertical member 16 of the shape member 101 with the notch 101A interposed therebetween. The hook 115 is fixed with a bolt 117 via a block 116 embedded in the form material 101 in advance, and is attached to the outer wall board 1.
The horizontal positioning of the outer wall board 12 is performed via rubber 118 between the outer wall board 12 and the side surface of the outer wall board 2. Note that in this embodiment, the retaining groove 12A is not formed on the side surface of the outer wall board 12.

As shown in FIG. 8, the shape material 102 at the upper end of the support frame 10 has a notch 102A in the middle part and a hook 121 in the tip part like the shape material 101.
The distal end thereof is bent downward and enters the holding groove 12A of the outer wall plate 12 to support both upper and lower ends of the outer wall plate 12 as in the previous embodiment. This profile 102, like the profile 101, is attached to the horizontal member 18 of the support frame 10.

Further, as shown in FIG. 8, the shape material 102 is arranged so that the drainage space 93 formed between the shape material 102B attached to the lower end of the adjacent support frame 10 is bent.
02 is the side closer to the building frame, and the profile members 102B protrude toward each other on the far side of the building frame. As a result, the bent drainage space 93 reliably prevents water from entering the building frame. Similarly, the shape material 102B is also attached to the support frame l.
It is attached to the horizontal material 19 of O, and the hook 121
is attached to support the holding groove 12A of the outer wall board 12.

In addition, as shown in FIG. 7, the longitudinal direction (
A notch 10 continuous with the notch 102A is provided at both ends (horizontal direction).
2C is formed and communicates with the notch 101A of the mold material 101.

The shapes 101 and 102 configured in this way have the same cross-sectional shape as the shapes 62 and 73 of the previous embodiment.
02 is formed into a long size and can be cut to the required length for use, making production extremely simple.

Next, a third embodiment of the present invention is shown in FIGS. 10 to 12.

In this embodiment, a holder 132 for accurately positioning a plurality of exterior wall panels 12 is shown. This holder 132
As shown in FIG. 12, a male screw 134 is formed at the base, and the tip 132A is bent at a right angle. Further, the tip end 135A of the bar 135 fixed to the intermediate portion is bent at a right angle and placed parallel to the bar 132A. The distance between these tip portions 132A and 135A is such that the outer wall board 12 is sandwiched in the thickness direction as shown in FIG. 10.11.

A bar 138 is temporarily installed horizontally on the outside of the building, and a bracket 141 having a U-shaped cross section is placed over the bar 138, and a fixing bolt 1 is inserted through the bracket 141.
42 is pressed against the bar 138, and the bracket 141 is fixed to the bar 138.

When this fixing bolt 142 is loosened, the bracket 141 can be slid in the longitudinal direction of the bar 138.

A male screw 134 of the holder 132 passes through a vertical piece of the angle member 143 fixed to the bracket 141. The male screw 134 has nuts 144 on both sides of the angle material 143.
．． 145 are screwed together. These nuts 144,]4
The mounting position of item 5 is determined so that the outer wall board 12 is sandwiched between the tip portions 132A and 135A, and the outer wall board 12 is accurately aligned in the depth direction of the building (in the direction indicated by the arrow). .

Therefore, in this embodiment, the tips of a plurality of holders 132 are inserted between adjacent outer wall plates 12 and rotated about the axis in the direction of arrow C to sandwich both sides of the outer wall plates 12. As a result, the outer wall board 12 is positioned in the depth direction of the building. The mounting of the exterior wall board 12 in each of the above embodiments is supported and fixed to the building frame depending on the structure. In this state, the holder 132 is pulled out from between the outer wall panels 12 by, for example, reversing the bracket 141 in the direction of arrow C and removing the bracket 141 from the bar 138.

The gaps between the outer wall panels 12 are filled with a sealing material to close them.

As a result, in this embodiment, it is possible to precisely and easily finely adjust the large number of exterior wall panels 12 in the depth direction of the building.

〔Effect of the invention〕

Since the present invention has the above-described configuration, it is possible to obtain a lightweight curtain wall with watertightness and load-bearing properties.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing a first embodiment of a curtain wall to which the present invention is applied, Fig. 2 is a side view of the curtain wall to which the invention is applied, seen from the outside of the building. 2 is a cross-sectional view taken along the line III-III in Figure 2. Figure 4 is an enlarged cross-sectional view of the IV-rV line in Figure 2. Figure 5 is an enlarged cross-sectional view taken along the ■-V line in Figure 2. FIG. 7 is an exploded perspective view of the main parts showing the second embodiment of the present invention, and FIG. 8 is the second embodiment, which is similar to FIG. 4 of the first embodiment. FIG. 9 is a horizontal sectional view of the second embodiment and corresponds to FIG. 5 of the first embodiment, and FIG. 10 is a horizontal sectional view of the third embodiment of the present invention. FIG. 11 is a sectional view taken along line M-XII in FIG. 10 showing the third embodiment, and FIG. 12 is a perspective view showing a holder used in the third embodiment. 10...Support frame, 12...Outer wall plate, 14...H-shaped steel, 16...Vertical material, 18.19...Horizontal material, 56...Metal plate, 68...Rubber gasket , 73... Shape material, 75... Rubber gasket, 76... Hook, 81... Shape material, 86... Hook, 91... Seal material, 93... Drainage space, 101.102.・Form material, Fig.

Claims (5)

[Claims] (1) A support frame made of steel, a support means that supports the support frame to the structure frame and allows relative movement in a vertical plane when a predetermined load is applied, and a plate that is fixed to the support frame and closes the inside of the frame. a member; an exterior wall board disposed on the opposite side of the support frame from the building; a holding means attached to the frame to hold the exterior wall board; a first sealing means for sealing between ends of the exterior wall board; a second sealing means attached to the frame for sealing the outer periphery of the frame with an adjacent portion. (2) The curtain wall according to claim 1, wherein the support means has an arm projecting laterally from the structural body and entering into the interior of the support frame to serve as a load support portion. (3) The curtain wall according to claim 1, wherein a precast concrete bar is attached to the outer peripheral side of the support frame, and the holding means is provided to the bar. (4) In the holding means, a mounting bolt is held upright on a small arm that is attached to the support frame, and the mounting hole of the hook attached to the outer wall plate is fitted vertically into the mounting bolt, and the nut is attached to the mounting bolt. The curtain wall according to claim 1, wherein the outer wall is supported by the support frame by screwing. (5) The curtain wall according to claim 1, wherein the first and second sealing means together with the holding means form a closed space.