JP2014177821A - Curtain wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curtain wall which can reduce the weight of a panel unit by reducing a size of a frame body, can expand a degree of a freedom of the design of the curtain wall, and can improve an appearance design property of the curtain wall by reducing an aspect dimension of the frame body.SOLUTION: A curtain wall 12 has an equal pressure space 24 being a drainage passage at a connecting member 16 of a hollow square material being an existing part. That is, a hollow part of the connecting member 16 is used as the equal pressure space 24. By this configuration, a vertical member 48 can be reduced in size. Therefore, according to this curtain wall 12, a glass panel unit 10 can be reduced in weight, a degree of a freedom of the design of the curtain wall 12 is expanded, and an appearance design property of the curtain wall 12 can be improved by reducing an aspect dimension of the vertical material 48.

Description

  The present invention relates to a curtain wall.

  The curtain wall is configured by connecting a plurality of panel units in the left-right direction and / or the up-down direction on the wall surface of a building. Moreover, the said panel unit is comprised by assembling | attaching a frame to the edge part of a rectangular-shaped glass panel via a sealing material, a backer, etc.

  The curtain wall disclosed in Patent Document 1 is provided with a rain barrier seal material (hereinafter referred to as a rain barrier) on the outdoor side of a vertical member and a horizontal member (frame body) of a glass panel unit. A wind barrier sealing material (referred to as a wind barrier) is provided on the indoor side.

  In such a curtain wall, by providing the isobaric space portion, the atmospheric pressure of the outside air and the isobaric space portion becomes substantially equal, so that there is an advantage that rainwater hardly enters from the seal portion of the rain barrier. That is, in the curtain wall of Patent Document 1, the space surrounded by a pair of opposing vertical members of the adjacent glass panel unit, the seal portion of the rain barrier, and the seal portion of the wind barrier is communicated with the outside air, and is substantially the same as the outside air. By using an isobaric space of equal pressure, it is difficult for rainwater to enter due to the pressure difference. In addition, in order to prevent rainwater from entering due to factors other than pressure differences, rainwater intrusion paths and ventilation paths have rain barriers that can effectively prevent rainwater diffusion into the isobaric space. The water tightness of the is secured.

  The isobaric space is connected to the air intake hole / drain hole provided in the ceiling sash and floor sash of the curtain wall, for example. Rainwater that has inevitably entered the isobaric space takes air from the isobaric space. Drain properly through the hole and drainage hole. The isobaric space is known as an open joint system configuration in the construction of curtain walls, and the structure allows air to easily move between the outside and the isobaric space through the air intake hole / drain hole. It has become.

  In the curtain wall of Patent Document 1, the vertical member has a shape that extends in a direction orthogonal to the glass surface of the glass panel unit by an amount that defines the isobaric space portion.

  Further, although not disclosed in Patent Document 1, the pair of opposed vertical members are often connected by a connecting member at the indoor side edge. Thereby, adjacent glass panel units are connected in the left-right direction. As the connecting member, a light and rigid hollow square member is generally used.

  In addition, a connection member seals the clearance gap between a pair of opposing vertical member, and is used abundantly in the form of the glass panel unit which has fireproof performance especially.

Japanese Patent Laid-Open No. 7-180246

  However, in the curtain wall of Patent Document 1 having the isobaric space portion in the frame body, the vertical member becomes large by the size of the isobaric space portion. As a result, the curtain wall of Patent Document 1 has a problem that the panel unit becomes large and heavy, the design of the curtain wall is restricted, and the appearance size of the curtain wall is deteriorated because the vertical dimension of the vertical member increases. was there. On the other hand, when the isobaric space portion is made small, a pressure difference between the outside air and the isobaric space portion occurs, and there is a problem that rainwater can easily enter from the seal portion of the rain barrier.

  The present invention has been made in view of such circumstances, and is a curtain wall provided with an isobaric space portion. By reducing the size of the frame, the panel unit can be reduced in size and weight. An object of the present invention is to provide a curtain wall that can improve the design of the appearance of the curtain wall by expanding the degree of freedom of design and reducing the size of the frame body.

  In order to achieve the above object, the present invention provides a plurality of panel units each having a frame attached to a side portion of a panel material, which are continuously provided at least in the left-right direction, and a pair of adjacent panel units facing each other. In the curtain wall in which the frame body is connected by a connecting member, the connecting member is provided with an isobaric space portion communicating with the outside air.

  The curtain wall according to one aspect of the present invention includes a constant pressure space portion that is a ventilation path in a connection member that is an existing component. By securing the required amount of the isobaric space portion of the connecting member, the isobaric space portion between the frames, or the isobaric space portion around the glass panel constituted by the glass panel material and the airtight material of the frame body and the glass panel is provided. Even in the case of a small design, by connecting the equal pressure space between the frames or the equal pressure space around the glass panel to the outside air via the equal pressure space of the connecting member, the outside air and each equal pressure are communicated. Since the atmospheric pressure in the space is substantially equal, rainwater can be prevented from entering from the seal portion of the rain barrier. Accordingly, the curtain wall according to one embodiment of the present invention can achieve a reduction in the size of the frame compared to the curtain wall of Patent Document 1 in which the frame is provided with an isobaric space portion. Therefore, according to the curtain wall of one aspect of the present invention, the panel unit composed of the panel material and the frame can be reduced in size and weight, the degree of freedom in designing the curtain wall is increased, and the frame is found in a smaller size. The appearance design of the wall can be improved. Further, according to the curtain wall of one embodiment of the present invention, the frame can be reduced in size and weight, so that the workability of the curtain wall is improved and the utilization rate of the indoor space is increased. Furthermore, the sharing rate of the structural strength between the frame and the connecting member can be increased on the connecting member side, and the sharing rate on the frame side can be reduced accordingly. In other words, the degree of freedom in designing the curtain wall is expanded.

  One aspect of the present invention is a gap between the pair of opposed frame bodies, which is surrounded by a first seal member located on the outdoor side and a second seal member located on the indoor side. It is preferable that the gap communicates with the isobaric space through a vent formed in the connecting member.

  According to one aspect of the present invention, the gap surrounded by the first seal member and the second seal member located on the indoor side is also communicated with the outside air through the isobaric space portion of the connecting member. In other words, the gap communicates with the outside air through the isobaric space and the air intake hole provided in the curtain wall.

  In addition, rainwater that has entered the gap through the seal portion by the first seal member is drained to the outside from the isobaric space portion through the drain hole or the air intake hole / drain hole. Thus, according to one embodiment of the present invention, it is possible to provide a curtain wall in which water tightness is ensured.

  In one aspect of the present invention, the frame body is a vertical member attached to a vertical side portion of the panel member, and the connecting member is disposed along the vertical member and communicates with the isobaric space portion. It is preferable that an air intake hole is provided in a lower member to which a lower side portion of the panel unit is attached. Moreover, you may provide also in the upper side member with which an upper side part is mounted | worn.

  In one aspect of the present invention, it is preferable that the upper member to which the upper side portion of the panel unit is attached or the air intake hole provided in the lower member and the connecting member are communicated with each other by a ventilation component.

  The panel material of the present invention may be a single sheet, or in the case of a panel unit having a vision part and a spandrel part, it may be a panel material for a vision part and a panel material for a spandrel. Moreover, the assembly position of the frame material is not limited to one side of the panel material, and may be two or more sides.

  Examples of the panel material of the present invention include glass plates such as single plate glass, tempered glass, laminated glass, and multi-layer glass, as well as so-called organic transparent resin materials such as polycarbonates and polystyrenes, but a connecting member is required. Fireproof double glazing is preferred. Moreover, you may use metal materials, such as aluminum, a ceramic material, a precast concrete material, etc.

  According to the curtain wall of the present invention, although the isobaric space portion is provided, the frame can be reduced in size, so that the panel unit can be reduced in size and weight, the degree of freedom in designing the curtain wall can be increased, the frame The appearance design of the curtain wall can be improved by reducing the size of the body.

The principal part front view which looked at the glass curtain wall constructed | assembled by the glass panel unit which concerns on embodiment from the outdoor side Explanatory drawing which demonstrated typically the flow of the air in the equal pressure division shown in FIG. Sectional drawing which follows the AA line of the curtain wall shown in FIG. The principal part perspective view which showed the glass panel unit of the one side of sectional drawing of FIG. Horizontal section of the main part showing the structure of a conventional curtain wall

  Hereinafter, preferred embodiments of a curtain wall according to the present invention will be described in detail with reference to the accompanying drawings.

[Configuration of Glass Curtain Wall 12]
FIG. 1 is a front view of an essential part of a glass curtain wall 12 constructed by glass panel units (panel units) 10, 10... According to an embodiment as viewed from the outdoor side. Further, FIG. 1 shows a glass curtain wall 12 of a building to which the isobaric joint method is applied. The glass curtain wall 12 shown in FIG. 1 is constructed by arranging a plurality of glass panel units 10 and 10 adjacent to each other in the left-right direction and the up-down direction (not shown).

  In the glass curtain wall 12, the hatched portion in FIG. 1 indicates a constant pressure section 14 by a constant pressure joint method. The equal pressure section 14 includes a connecting member 16 (see FIG. 3) for connecting two adjacent glass panel units 10 and 10 on the indoor side, a ceiling sash (upper member) 18, and a floor sash (lower member). In FIG. 20, it is provided in the shape of the illustrated construction. Adjacent isobaric compartments 14, 14 (only one isobaric compartment 14 is shown in FIG. 1) are partitioned through a partition wall (not shown) disposed on the ceiling sash 18 and the floor sash 20. Thus, the generation of airflow in the isobar section 14 is suppressed. Further, the upper side and the lower side of the glass panel unit 10 are fitted into a ceiling sash 18 and a floor sash 20, whereby a glass curtain wall 12 comprising a plurality of glass panel units 10, 10. Built as a body.

[Structure of isobaric compartment 14]
FIG. 2 is an explanatory diagram schematically illustrating the air flow in the equal pressure section 14 illustrated in FIG. 1. FIG. 3 is a cross-sectional view taken along the line AA of the curtain wall 12 shown in FIG. 1, and FIG.

  2 is provided with air intake holes 22 and 22 in the rain partition of the ceiling-side sash 18, and the outside air passes through the air intake holes 22 and 22 as indicated by arrows. It is introduced into a cavity (not shown) and introduced into the isobaric space portion 24 of the connecting member 16 shown in FIG.

  The isobaric space portion 24 is provided over the entire length of the long connecting member 16. Further, the rain partition of the floor sash 20 shown in FIG. 2 is also provided with air intake holes 26, 26, and the outside air passes through these air intake holes 26, 26 and has a cavity (not shown) of the floor sash 20. And introduced into the isobaric space 24 of the connecting member 16 shown in FIG. That is, the isobaric space portion 24 provided over the entire length of the connecting member 16 is communicated with the outside air through the air intake holes 22, 22, 26, and 26 as indicated by arrows in FIG. Therefore, the internal pressure of the isobaric space 24 is maintained at approximately the same pressure as the outside air.

  In addition, when constructing a curtain wall with a panel unit in which cross members (upper member, lower member) are provided on the upper side and lower side of the panel material without using the ceiling sash 18 and the floor sash 20, What is necessary is just to provide an air intake port between a pair of crossing material which the panel unit which adjoins up and down faces. In this case, a ventilation part that allows the equal pressure space 24 and the air intake port to communicate with each other may be connected to the cross member. Further, the position of the air intake is not limited to the position described above, but is selected as a suitable position in the design of the curtain wall.

[Configuration of Glass Panel Unit 10]
As the panel material constituting the glass panel unit 10 as shown in FIG. 3 and FIG. 4, the multilayer glass G is illustrated in the embodiment. In the multilayer glass G, two glass plates 30 and 32 facing each other are spaced apart via a spacer 34, and both side surfaces of the spacer 34 facing the two glass plates 30 and 32 are primary sealing materials 36, 38 are bonded to the two glass plates 30 and 32, respectively. Thereby, the hollow layer 40 is formed between the two glass plates 30 and 32. Further, the outer sides of the primary sealing materials 36 and 38 are sealed with a secondary sealing material 42.

  As the spacer 34, a metal spacer mainly made of aluminum is often used, but a spacer made of stainless steel or hard resin may also be used. The spacer 34 has a hollow portion therein, and the hollow portion is filled with a desiccant 44 such as granular zeolite. The spacer 34 has a through hole 46 that allows the hollow portion to communicate with the hollow layer 40, and the air in the hollow layer 40 is dried through the through hole 46.

  The primary sealing materials 36 and 38 of the multi-layer glass G are butyl sealing materials that have good adhesion to the glass plate and high moisture permeability resistance. The secondary sealing material 42 is preferably based on a curable elastomer such as polysulfide, silicone, urethane, or the like, which has been appropriately modified to exhibit adhesion to glass.

  The multi-layer glass G thus configured is a netted glass plate in which the glass plate 30 located on the indoor side is a fireproof glass plate, and the glass plate 32 located on the outdoor side is a general soda lime glass. This is a representative non-heat-resistant fire-proof glass plate. In addition, you may use another heat-resistant fireproof glass plates, such as heat-resistant tempered glass, low expansion | strengthening tempered glass, and transparent crystallized glass, as the glass plate 30. That is, the multilayer glass G is a fireproof multilayer glass.

  The glass panel unit 10 is configured by pre-assembling the aluminum vertical member (frame body) 48 shown in FIGS. 3 and 4 on the vertical side portion of the multilayer glass G configured as described above at the factory. Yes. The connecting member 16 is disposed along the vertical member 48 and is fixed to the vertical member 48 by a fastening member such as a bolt.

  A glass curtain composed of a plurality of glass panel units 10, 10... By fitting the upper side and lower side of the glass panel unit 10 with the vertical members 48 assembled in advance into the ceiling sash 18 and the floor sash 20, respectively. A wall 12 is constructed.

[Characteristics of Isobaric Space 24]
The curtain wall 12 according to the embodiment includes the isobaric space portion 24 that is a ventilation path in the connecting member 16 that is an existing part and is a hollow rectangular pipe material. That is, the hollow portion of the connecting member 16 is used as the isobaric space portion 24.

  Here, the curtain wall 12 of the embodiment is compared with the conventional curtain wall provided with a constant pressure space portion in the vertical member.

  FIG. 5 is a horizontal cross-sectional view of the main part showing the structure of the conventional curtain wall 100.

  The curtain wall 100 of FIG. 5 includes an isobaric space portion 106 between a pair of opposed vertical members 104, 104 of adjacent glass panel units 102, 102. For this reason, the vertical member 104 becomes longer in the direction (direction indicated by the arrow A in FIG. 5) perpendicular to the glass surface of the glass panel unit 102 by the amount that defines the isobaric space portion 106, or in the left-right direction. There is a problem that it becomes longer (in the direction indicated by arrow B in FIG. 5) and becomes larger. The longitudinal member 104 and the longitudinal member 104 are connected by a connecting member 108 at the indoor side end. Reference numeral 110 denotes a rain barrier, and reference numeral 112 denotes a wind barrier. That is, the isobaric space portion 106 is a space defined by a pair of opposing vertical members 104, 104, a rain barrier 110, and a wind barrier 112.

  On the other hand, in the curtain wall 12 of the embodiment shown in FIG. 3, the size of the vertical member 48 (see FIG. 3) is shorter in the directions of arrows A and B than the curtain wall 100 shown in FIG. can do. Therefore, according to the curtain wall 12 of the embodiment, the glass panel unit 10 can be reduced in size and weight, the degree of freedom in designing the curtain wall 12 is expanded, and the appearance dimensions of the curtain wall 12 are reduced by reducing the vertical dimension of the vertical member 48. Can improve sex.

  Further, in the curtain wall 12 of the embodiment, since the vertical member 48 can be reduced in size and weight as described above, the workability of the curtain wall 12 is improved and the utilization rate of the indoor space is increased. Furthermore, the sharing rate of the structural strength between the vertical member 48 and the connecting member 16 can be increased for the connecting member 16, and the sharing rate of the vertical member 48 can be reduced accordingly. That is, the degree of freedom in designing the curtain wall 12 is expanded.

  Furthermore, the curtain wall 12 according to the embodiment is located in the gap 50 between the pair of opposing vertical members 48, 48 and the rain barriers (first seal members) 52, 52 located on the outdoor side and the indoor side. Wind barriers (second seal members) 54 and 54 are disposed. The isobaric space portion 24 of the connecting member 16 communicates with the floor side member or the ceiling side member via a ventilation part that forms the opening 56 of the connecting member 16, and the air intake hole shown in FIG. It communicates with the outside air via 22, 22, 26, 26.

  According to the curtain wall 12 of the embodiment having the above-described configuration, it enters the isobaric space portion 24 through the seal portion by the rain barriers 52, 52, the seal portion by the wind barriers 54, 54, and the opening portion 56 of the connecting member 16. The rainwater thus drained is discharged from the isobaric space portion 24 to the outside through the air intake holes 22 and 22. As a result, the curtain wall 12 of the embodiment ensures water tightness.

  That is, the outside air is introduced from the air intake holes 22 and 22 or the air intake holes 26 and 26 into the isobaric space portion 24 of the connecting member 16 disposed along the vertical member 48. The rain barrier 52 and the wind barrier 54 described above are mounted on the respective vertical members 48.

  In the above-described embodiment, the glass panel unit 10 in which the vertical member 48 is assembled to a single multilayer glass G has been exemplified. However, the present invention is not limited to this. For example, a glass panel unit having a vision part and a spandrel part. In this case, a glass panel unit in which the vertical member 48 is assembled to two glass plates may be used.

  DESCRIPTION OF SYMBOLS 10 ... Glass panel unit, 12 ... Curtain wall, 14 ... Isobaric division, 16 ... Connecting member, 18 ... Ceiling side sash, 20 ... Floor sash, 22 ... Air intake hole, 24 ... Isobaric space part, 26 ... Air intake hole, 30, 32 ... Glass plate, 34 ... Spacer, 36, 38 ... Primary sealant, 40 ... Hollow layer, 42 ... Secondary sealant, 44 ... Desiccant, 46 ... Through-hole, 48 ... Longitudinal material 50 ... Gap, 52 ... Rain barrier, 54 ... Wind barrier, 56 ... Opening

Claims (4)

A plurality of panel units each having a frame attached to a side portion of the panel material are connected at least in the left-right direction, and a pair of the opposing frame bodies of the adjacent panel units are connected by a connecting member. In curtain wall,
A curtain wall characterized in that the connecting member includes an isobaric space portion communicating with outside air.   The gap between the pair of opposing frame bodies, which is surrounded by the first seal member located on the outdoor side and the second seal member located on the indoor side, is connected to the connecting member. The curtain wall according to claim 1, wherein the curtain wall communicates with the isobaric space portion through a formed air hole. The frame is a vertical member attached to a vertical side portion of the panel material,
The connecting member is disposed along the longitudinal member,
The curtain wall according to claim 2, wherein an air intake hole communicating with the isobaric space portion is provided in a lower member to which a lower side portion of the panel unit is attached.   The curtain wall according to claim 3, wherein the upper member on which the upper side portion of the panel unit is mounted, or the air intake hole provided in the lower member and the connecting member are communicated with each other by a ventilation component.

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