Curtain wall unit

Abstract

To provide a curtain wall unit capable of improving thermal insulation properties.SOLUTION: The curtain wall unit includes: a metal frame body 2A formed into a frame shape; and a resin frame cover 2B attached to the indoor-facing surfaces 2a, 2b, and 2c of the frame body 2A. A hollow part S21 is formed inside the frame cover 2B. Spaces S11 and S12 are formed between the frame cover 2B and the surfaces 2a, 2b, and 2c facing indoors in the frame body 2A.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a curtain wall unit.

Background Art

[0002] Conventionally, curtain walls have been adopted for buildings such as mid - to high - rise buildings. A configuration has been proposed in which a glass panel is disposed inside a frame such as a seamless or square - upright frame formed of a metal material such as aluminum or steel (see, for example, Patent Document 1 below).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, since the frame is formed of a metal material, there is a problem of low heat insulation.

[0005] The present disclosure has been made in view of the above circumstances, and provides a curtain wall unit capable of improving heat insulation.

Means for Solving the Problems

[0006] A curtain wall unit according to an aspect of the present disclosure includes a metal frame body formed in a frame shape, and a resin frame cover attached to a surface of the frame body facing the indoor side. The frame cover attached to the vertical frame body of the frame body has a pair of vertical frame cover members arranged on both sides of the vertical frame body in the width direction, and the end of one of the pair of vertical frame cover members is arranged to overlap the indoor side of the end of the other vertical frame cover member. .

Brief Description of the Drawings

[0007] [Figure 1] It is a front view of a curtain wall unit according to the first embodiment. [Figure 2]This is a vertical cross-sectional view of a curtain wall unit. [Figure 3] This is a horizontal cross-sectional view of a curtain wall unit. [Figure 4] This is an enlarged view of section IV in Figure 2. [Figure 5] This is an enlarged view of section V in Figure 2. [Figure 6] This diagram shows the assembly of the frame cover. [Figure 7] This is an enlarged front view of the frame cover as seen from the indoor side. [Figure 8] This is a horizontal cross-sectional view of the vertical frame according to the second embodiment. [Figure 9] This is a horizontal cross-sectional view of the vertical frame according to the third embodiment. [Figure 10] This is a horizontal cross-sectional view of a curtain wall unit according to the fourth embodiment. [Figure 11] This is a horizontal cross-sectional view of the vertical frame according to the fifth embodiment. [Modes for carrying out the invention]

[0008] (First Embodiment) The curtain wall unit according to the first embodiment will be described below with reference to the drawings. The following embodiments represent one aspect of the present disclosure and are not limiting to the present disclosure, and can be arbitrarily modified within the scope of the technical idea of ​​the present disclosure. In the following description, the direction that connects the outdoor side (the +Y side shown in Figure 2, etc.) and the indoor side (the -Y side shown in Figure 2, etc.) along the horizontal direction will be referred to as the indoor-outdoor direction (direction of arrow Y in the figure). The direction that is perpendicular to the indoor-outdoor direction and along the horizontal direction will be referred to as the width direction (direction of arrow X in the figure). The direction that is perpendicular to the indoor-outdoor direction and the width direction will be referred to as the vertical direction (direction of arrow Z in the figure). In each component, the side that moves away from the center in the indoor-outdoor direction and the width direction may be referred to as the outside, and the side that moves towards the center may be referred to as the inside.

[0009] As shown in Figure 1, the curtain wall 100 is formed by connecting a plurality of curtain wall units 101. Each curtain wall unit 101 comprises a frame 1 and two glass panels 6A and 6B.

[0010] Frame 1 is constructed by assembling a frame body 1A and a frame cover 1B. Frame body 1A is made of a metal component such as an aluminum profile. Frame cover 1B is made of a synthetic resin component such as a resin profile.

[0011] Frame 1 comprises a pair of vertical frames 2, an upper frame 3, an intermediate transom 4, and a lower frame 5. The vertical frames 2 extend in the vertical direction. The pair of vertical frames 2 are spaced apart in the width direction. The upper frame 3, intermediate transom 4, and lower frame 5 extend in the width direction. The upper frame 3 connects the upper ends of the pair of vertical frames 2. The intermediate transom 4 connects the middle sections of the pair of vertical frames 2 in the vertical direction. The lower frame 5 connects the lower ends of the pair of vertical frames 2.

[0012] Glass panel 6A is positioned inside a frame formed in a four-sided shape by a pair of vertical frames 2, an upper frame 3, and an intermediate transom 4. Glass panel 6B is positioned inside a frame formed in a four-sided shape by a pair of vertical frames 2, an intermediate transom 4, and a lower frame 5. As an example, a curtain wall unit 101 is shown with two glass panels 6A and 6B inside a frame 1, but the number of glass panels in the curtain wall unit 101 is not limited to the illustrated example. As shown in Figure 2, glass panel 6A is single-pane glass, and glass panel 6B is double-pane glass. Each glass panel may be single-pane glass or double-pane glass.

[0013] As shown in Figure 3, the vertical frame 2 has a vertical frame body 2A which is part of the frame body 1A and a vertical frame cover 2B which is part of the frame cover 1B.

[0014] The vertical frame body 2A comprises a first vertical frame body member 21 and a second vertical frame body member 22. The first vertical frame body member 21 and the second vertical frame body member 22 are arranged facing each other in the width direction. The first vertical frame body member 21 and the second vertical frame body member 22 are connected to form a substantially rectangular shape, with hollows S1 and S2 formed inside.

[0015] On the outdoor side portions of the first vertical frame body member 21 and the outdoor side portions of the second vertical frame body member 22, there are provided bending wall portions 211 extending in the width direction. At the tip of the bending wall portion 211, there is provided a bottom wall portion 212 extending to the outdoor side. At the tip of the bottom wall portion 212, an engaging wall member 213 extending in the width direction is engaged.

[0016] By the bending wall portion 211, the bottom wall portion 212, and the engaging wall member 213, a glass groove 215 recessed in the width direction is formed. In the glass groove 215, the widthwise end portions of the glass panel 6B are arranged.

[0017] Between the surface 6a facing the outdoor side of the glass panel 6B, the glass panel 6B, and the tip of the engaging wall member 213, a packing material 61 is fitted. Between the surface 6b facing the indoor side of the glass panel 6B and the bending wall portion 211, a sealing material 63 and a glazing material 64 are fitted. The glazing material 64 is engaged with an engaging projection 211a provided on the bending wall portion 211. The glazing material 64 is supported by the sealing material 63 in the width direction. The packing material 61 is dry, but it may also be wet. In the case of the sealing material 63 and the glazing material 64, although the sealing material 63 is arranged on the end side of the glass panel 6B, a configuration in which, conversely, the glazing material 64 is arranged on the end side of the glass panel 6B may also be adopted.

[0018] The vertical frame cover 2B is attached to the surface facing the indoor side of the vertical frame body 2A. The vertical frame cover 2B is attached to the indoor side surface 2a, one surface 2b in the width direction, and the other surface 2c in the width direction of the vertical frame body 2A. In FIG. 3, one side in the width direction is the right side of the drawing sheet, and the other side in the width direction is the left side of the drawing sheet.

[0019] The vertical frame cover 2B has a pair of vertical frame cover members 24 and 25 arranged on both sides in the width direction of the vertical frame body 2A. The first vertical frame cover member 24 covers the surface 2b of the vertical frame body 2A. The second vertical frame cover member 25 covers the surface 2c of the vertical frame body 2A.

[0020] The first vertical frame cover material 24 has an inner plate portion 241, an outer plate portion 242, an outdoor connecting wall portion 243, and an indoor connecting wall portion 244.

[0021] The inner panel section 241 is arranged along the indoor-outdoor direction. The surface of the inner panel section 241 faces in the width direction. The length of the inner panel section 241 in the indoor-outdoor direction is slightly longer than the length of the vertical frame body 2A in the indoor-outdoor direction.

[0022] The outer panel portion 242 is arranged along the indoor-outdoor direction. The outer panel portion 242 is positioned on the opposite side of the vertical frame body 2A in the width direction of the inner panel portion 241, with a gap between it and the inner panel portion 241. The surface of the outer panel portion 242 faces in the width direction. The length of the outer panel portion 242 in the indoor-outdoor direction is approximately the same as the length of the inner panel portion 241 in the indoor-outdoor direction.

[0023] The outdoor connecting wall section 243 connects the outdoor end of the inner plate section 241 to the outdoor end of the outer plate section 242. A space S11 is formed between the indoor connecting wall section 244 and the surface 2a of the vertical frame body 2A. The space S11 is formed over substantially the entire length in the longitudinal direction of the vertical frame cover 2B. The indoor connecting wall section 244 connects the indoor end of the inner plate section 241 to the indoor end of the outer plate section 242. The inner end 244a in the width direction of the indoor connecting wall section 244 extends to substantially the center in the width direction of the vertical frame body 2A.

[0024] The middle of the inner panel 241 in the indoor / outdoor direction and the middle of the outer panel 242 in the indoor / outdoor direction are connected by two intermediate connecting wall sections 245. Between the inner panel 241 and the outer panel 242, three hollow sections S21 are formed, partitioned by the intermediate connecting wall sections 245. Three hollow sections S21 are formed inside the first vertical frame cover material 24. The hollow sections S21 are formed over substantially the entire length in the longitudinal direction of the vertical frame cover 2B. The number of locations where hollow sections S21 are formed is not limited to three, but can be set as appropriate.

[0025] At both ends of the inner plate portion 241 in the indoor / outdoor direction, engaging wall portions 247 are provided facing inward in the width direction. The engaging wall portions 247 engage with engaging pieces provided at the indoor end of the vertical frame body 2A.

[0026] The inner plate portion 241 is provided with a protruding wall portion 246 that extends toward the vertical frame body 2A, which is in the direction toward the inside in the width direction. The tip of the protruding wall portion 246 is in contact with the surface 2b of the vertical frame body 2A. Between the inner plate portion 241 and the surface 2b of the vertical frame body 2A, two spaces S12 are formed, partitioned by the protruding wall portion 246. The spaces S12 are formed over substantially the entire length in the longitudinal direction of the vertical frame cover 2B. The number of locations where spaces S12 are formed is not limited to two, but can be set as appropriate.

[0027] A shielding material 66 is provided at the end of the inner plate portion 241 facing the glass panel 6B and at the end of the outer plate portion 242 facing the glass panel 6B. The shielding material 66 has a locking portion 661 and an extension portion 662. The shielding material 66 is made of a material such as synthetic rubber, but the material can be set as appropriate.

[0028] The locking portion 661 is locked to the end of the inner plate portion 241, the end of the outer plate portion 242, and the outdoor connecting wall portion 243. The extension portion 662 extends from the locking portion 661 to the outdoor side. The tip of the extension portion 662 is in contact with the surface 6b of the glass panel 6B.

[0029] An air layer S31 is formed between the extended portion 662 of the shielding material 66 and the glazing material 64, along the surface 6b of the glass panel 6B. The air layer S31 is formed over substantially the entire length in the longitudinal direction of the vertical frame cover 2B.

[0030] The configuration of the second vertical frame cover material 25 is substantially the same as that of the first vertical frame cover material 24 when reversed in the left-right direction. Parts with the same configuration are denoted by the same reference numerals, and their explanation is omitted; only the different configurations will be described. The inner end 244b in the width direction of the indoor connecting wall portion 244 of the second vertical frame cover material 25 extends to approximately the center in the width direction of the vertical frame body 2A. The end portion 244b of the indoor connecting wall portion 244 of the 25 is positioned to overlap the indoor side of the end portion 244a of the indoor connecting wall portion 244 of the first vertical frame cover material 24. The indoor connecting wall portion 244 of the first vertical frame cover material 24 and the indoor connecting wall portion 244 of the second vertical frame cover material 25 cover the surface 2a of the vertical frame body 2A.

[0031] In the description of the configuration of the intermediate transom 4 and the lower frame 5, parts with substantially the same configuration as the vertical frame 2 are given the same reference numerals and their explanations are omitted, while only the different configurations are described.

[0032] As shown in Figure 4, the intermediate transom 4 has an intermediate transom body 4A which is part of the frame body 1A and an intermediate transom cover 4B which is part of the frame cover 1B.

[0033] The intermediate transom body 4A has a shape in which a hollow S3 is formed inside. The lower end of the intermediate transom body 4A on the outdoor side is provided with a bent wall portion 411 that extends upward. The tip of the bent wall portion 411 is provided with a bottom wall portion 412 that extends outwards. The tip of the bottom wall portion 412 is engaged with an engaging wall member 413 that extends downward.

[0034] The bent wall portion 411, the bottom wall portion 412, and the engaging wall member 413 form an upwardly recessed glass groove 415. The upper end of the glass panel 6B is positioned in the glass groove 415.

[0035] The intermediate transom cover 4B is attached to the side of the intermediate transom body 4A that faces indoors. The intermediate transom cover 4B is attached to the lower part of the bottom surface 4a and the indoor side surface 4b of the intermediate transom body 4A.

[0036] The intermediate transom cover 4B covers the lower parts of the lower surfaces 4a and 4b of the intermediate transom body 4A. The intermediate transom cover 4B has an upper plate portion 421, an upward-facing wall portion 422, a bent wall portion 423, and a mounting wall portion 424.

[0037] The upper panel portion 421 is arranged along the width direction. The surface of the upper panel portion 421 is oriented in the vertical direction. The upper panel portion 421 is positioned below the lower surface 4a of the intermediate transom body 4A. The indoor end of the upper panel portion 421 protrudes further inward than the intermediate transom body 4A.

[0038] The upward-facing wall portion 422 extends upward from the indoor end of the upper side plate portion 421. The fixing member B2 of the steel frame B1 is screwed to the upward-facing wall portion 422. The steel frame B1 may be an aluminum frame made of aluminum.

[0039] The bent wall portion 423 extends outward from the upper end of the upward-facing wall portion 422. The insulation material D1 is sprayed and attached to the upper surface 423u of the bent wall portion 423 and to the portion of the surface 4b of the intermediate transom body 4A that is above the bent wall portion 423. The upper surface 423u, which is the upper part of the bent wall portion 423, corresponds to the sprayed surface of the claims.

[0040] The mounting wall portion 424 extends upward from the outdoor end of the bent wall portion 423. The mounting wall portion 424 is positioned along the surface 4b of the intermediate transom body 4A and is screwed to the intermediate transom body 4A.

[0041] The upper plate portion 421 is provided with protruding wall portions 426 that extend upward toward the intermediate transom body 4A. The protruding wall portions 426 are arranged at four locations separated in the indoor / outdoor direction. The upper ends of the protruding wall portions 426 are in contact with the lower surface 4a of the intermediate transom body 4A. Between the upper plate portion 421 and the lower surface 4a of the intermediate transom body 4A, four spaces S14 are formed, partitioned by the protruding wall portions 426. The spaces S14 are formed over approximately the entire length of the intermediate transom cover 4B in the longitudinal direction. The number of locations where the protruding wall portions 426 are arranged and the number of locations where the spaces S14 are formed are not limited to four, but can be set as appropriate.

[0042] A shielding material 66 is provided at the end of the upper plate portion 421 facing the glass panel 6B. The tip of the extended portion 662 of the shielding material 66 is in contact with the surface 6b of the glass panel 6B. An air layer S31 is formed between the extended portion 662 of the shielding material 66 and the glazing material 64, along the surface 6b of the glass panel 6B. The air layer S31 is formed over substantially the entire length in the longitudinal direction of the intermediate transom cover 4B.

[0043] As shown in Figure 5, the lower frame 5 has a lower frame body 5A which is part of the frame body 1A and a lower frame cover 5B which is part of the frame cover 1B.

[0044] The lower frame body 5A has a shape in which a hollow S4 is formed inside. The lower end of the lower frame body 5A on the outdoor side is provided with a bent wall portion 511 that extends downward. The tip of the bent wall portion 511 is provided with a bottom wall portion 512 that extends outwards. The tip of the bottom wall portion 512 is engaged with an engaging wall member 513 that extends downward.

[0045] The bent wall portion 511, the bottom wall portion 512, and the engaging wall member 513 form a downwardly recessed glass groove 515. The lower end of the glass panel 6B is positioned in the glass groove 515.

[0046] The lower frame cover 5B is attached to the side of the lower frame body 5A that faces indoors. The lower frame cover 5B is attached to the lower part of the upper surface 5a and the indoor side surface 5b of the lower frame body 5A.

[0047] The lower frame cover 5B covers the upper surface 5a and surface 5b of the lower frame body 5A. The lower frame cover 5B has a lower side plate portion 521, upper and lower wall portions 522, a bent wall portion 523, and a mounting wall portion 524.

[0048] The lower plate portion 521 is arranged along the width direction. The surface of the lower plate portion 521 faces in the vertical direction. The lower plate portion 521 is positioned above the upper surface 5a of the lower frame body 5A. The indoor end of the lower plate portion 521 protrudes further inward than the lower frame body 5A.

[0049] The upper and lower wall sections 522 extend upward and downward from the indoor end of the lower plate section 521. The fixing members B3 of the steel frame B1 are screwed to the upper and lower wall sections 522.

[0050] The bent wall section 523 extends outward from the lower end of the upper and lower wall sections 522. The insulation material D1 is sprayed and attached to the lower surface 523d ​​of the bent wall section 523 and the indoor surface 5c of the lower frame body 5A.

[0051] The mounting wall portion 524 extends downward from the outdoor end of the bent wall portion 523. The mounting wall portion 524 is positioned along the surface 5b of the lower frame body 5A and is screwed to the lower frame body 5A.

[0052] The lower plate portion 521 is provided with a protruding wall portion 526 that extends downward toward the lower frame body 5A. The protruding wall portions 526 are arranged at four locations separated in the indoor / outdoor direction. The lower ends of the protruding wall portions 526 are in contact with the upper surface 5a of the lower frame body 5A. Between the lower plate portion 521 and the upper surface 5a of the lower frame body 5A, four spaces S15 are formed, partitioned by the protruding wall portions 526. The spaces S15 are formed over approximately the entire length in the longitudinal direction of the lower frame cover 5B. The number of locations where the protruding wall portions 526 are arranged and the number of locations where the spaces S15 are formed are not limited to four, but can be set as appropriate.

[0053] A shielding material 66 is provided at the end of the lower plate portion 521 facing the glass panel 6B. The tip of the extended portion 662 of the shielding material 66 is in contact with the surface 6b of the glass panel 6B. An air layer S31 is formed between the extended portion 662 of the shielding material 66 and the glazing material 64, along the surface 6b of the glass panel 6B. The air layer S31 is formed over substantially the entire length in the longitudinal direction of the lower frame cover 5B.

[0054] In Figure 6, the length of the vertical frame cover 2B is shown as a shortened version. As shown in Figure 6, an end cap 24A is fitted over the upper end 24u of the first vertical frame cover material 24 of the vertical frame cover 2B. An end cap 25A is fitted over the upper end 25u of the second vertical frame cover material 25 of the vertical frame cover 2B.

[0055] As shown in Figure 7, a recess 251 that is recessed upward is formed at the bottom of the end cap 24A. A recess 252 that is recessed upward is formed at the bottom of the end cap 25A. The upper end portion 24u of the first vertical frame cover material 24 is positioned within the recess 251 of the end cap 24A, and a gap K1 is formed above the upper end portion 24u. The upper end portion 25u of the second vertical frame cover material 25 is positioned within the recess 252 of the end cap 25A, and a gap K1 is formed above the upper end portion 25u. The end caps 24A and 25A are fixed to the intermediate transom body 4A by screws 253.

[0056] The installation method for the curtain wall unit 101 is described below. Glazing material 64 is attached to the glass grooves 215, 415, and 515 of the frame body 1A. The glass panel 6B is erected. Sealant 63 is installed from the outside between the glass grooves 215, 415, and 515 and the indoor-facing surface 6b of the glass panel 6B. The shielding material 66 with the locking portion 661 and the frame cover 1B are installed.

[0057] In the configuration where the glazing material 64 is positioned closer to the end of the glass panel 6B than the sealing material 63, the glazing material 64 is attached to the glass grooves 215, 415, and 515 of the frame body 1A. The glass panel 6B is then erected. The sealing material 63 is installed from the indoor side between the glass grooves 215, 415, and 515 and the indoor-facing surface 6b of the glass panel 6B. The shielding material 66 and frame cover 1B, to which the locking portion 661 is locked, are then installed.

[0058] In the curtain wall 100, vertical frame covers 2B are attached to the indoor-facing surfaces 2a, 2b, and 2c of the metal vertical frame body 2A. Intermediate transom covers 4B are attached to the lower parts of the lower surfaces 4a and 4b of the metal intermediate transom body 4A. Bottom frame covers 5B are attached to the upper surfaces 5a and 5b of the metal bottom frame body 5A. Since the exposure of the metal vertical frame body 2A, intermediate transom body 4A, and bottom frame body 5A to the indoors is suppressed, thermal insulation can be improved.

[0059] Since a hollow section S21 is formed inside the vertical frame cover 2B, the air inside the hollow section S21 can further improve the thermal insulation of the vertical frame cover 2B.

[0060] Spaces S11 and S12 are formed between the vertical frame cover 2B and the vertical frame body 2A. Space S14 is formed between the intermediate transom cover 4B and the intermediate transom body 4A. Space S15 is formed between the lower frame cover 5B and the lower frame body 5A. The air in spaces S11, S12, S14, and S15 can further improve the thermal insulation of the frame cover 1B.

[0061] The tip of the extension 662 of the shielding material 66 provided on the frame cover 1B is in contact with the surface 6b of the glass panel 6B. The shielding material 66 prevents the metal components of the frame body 1A from being exposed to the indoor side. Since the temperature transmitted through the frame body 1A is blocked, the heat insulation performance can be improved.

[0062] An air layer S31 is formed between the extended portion 662 of the shielding material 66 and the glazing material 64, along the surface 6b of the glass panel 6B. The air in the air layer S31 further enhances the thermal insulation of the curtain wall unit 101.

[0063] The insulation material D1 is sprayed and attached to the upper surface 423u of the bent wall portion 423 of the intermediate transom body 4A and to the portion of the surface 4b of the intermediate transom body 4A above the bent wall portion 423. The upper surface 423u of the bent wall portion 423 of the intermediate transom body 4A and the portion of the surface 4b of the intermediate transom body 4A above the bent wall portion 423 ensure a sufficient area for spraying the insulation material D1.

[0064] Insulation material D1 is sprayed and attached to the lower surface 523d ​​of the bent wall portion 523 of the lower frame cover 5B and the indoor side surface 5c of the lower frame body 5A. The lower surface 523d ​​of the bent wall portion 523 of the lower frame cover 5B and the indoor side surface 5c of the lower frame body 5A ensure a sufficient area for spraying insulation material D1.

[0065] The first vertical frame cover material 24 and the second vertical frame cover material 25 are positioned on both sides of the vertical frame body 2A in the width direction. Since the first vertical frame cover material 24 and the second vertical frame cover material 25 can be attached to the vertical frame body 2A from both sides in the width direction, on-site installation is possible and maintenance is easy.

[0066] When the resin first vertical frame cover material 24 and the second vertical frame cover material 25 expand vertically due to temperature changes, the upper end portion 24u of the first vertical frame cover material 24 and the upper end portion 25u of the second vertical frame cover material 25 penetrate deeply into the recess 251 of the end cap 24A and the recess 252 of the second vertical frame cover material 25, respectively. Since the thermal expansion of the first vertical frame cover material 24 and the second vertical frame cover material 25 can be absorbed by the end caps 24A and 25A, the intermediate transom 4 and the lower frame 5 are not pressed or affected by the thermal expansion of the first vertical frame cover material 24 and the second vertical frame cover material 25.

[0067] (Second embodiment) The curtain wall according to the second embodiment will be described mainly with reference to Figure 8. In the embodiments described below, components corresponding to the embodiments shown above may be denoted by the same reference numerals and their descriptions may be omitted.

[0068] As shown in Figure 8, the first vertical frame cover material 24C and the second vertical frame cover material 25C are not provided with a protruding wall portion 246 and an engaging wall portion 247. The inner plate portion 241 of the first vertical frame cover material 24C and the second vertical frame cover material 25C is in contact with the surfaces 2b and 2c of the vertical frame body 2A. No space is formed between the inner plate portion 241 of the first vertical frame cover material 24C and the second vertical frame cover material 25C and the surfaces 2b and 2c of the vertical frame body 2A.

[0069] In the curtain wall 100, vertical frame covers 2C are attached to the indoor-facing surfaces 2a, 2b, and 2c of the metal vertical frame body 2A. Intermediate transom covers 4B are attached to the lower part of the lower surface 4a and surface 4b of the metal intermediate transom body 4A. Bottom frame covers 5B are attached to the upper surface 5a and surface 5b of the metal bottom frame body 5A. Since the exposure of the metal vertical frame body 2A, intermediate transom body 4A, and bottom frame body 5A to the indoors is suppressed, thermal insulation can be improved.

[0070] (Third embodiment) The curtain wall according to the third embodiment will be described mainly with reference to Figure 9. As shown in Figure 9, the first vertical frame cover material 24D and the second vertical frame cover material 25D are not provided with an outer plate portion 242 and an intermediate connecting wall portion 245, and no hollow portion S21 is formed.

[0071] In the curtain wall 100, vertical frame covers 2D are attached to the indoor-facing surfaces 2a, 2b, and 2c of the metal vertical frame body 2A. Intermediate transom covers 4B are attached to the lower part of the lower surface 4a and surface 4b of the metal intermediate transom body 4A. Bottom frame covers 5B are attached to the upper surface 5a and surface 5b of the metal bottom frame body 5A. Since the exposure of the metal vertical frame body 2A, intermediate transom body 4A, and bottom frame body 5A to the indoors is suppressed, thermal insulation can be improved.

[0072] (Fourth embodiment) The curtain wall according to the fourth embodiment will be described mainly with reference to Figure 10. As shown in Figure 10, the vertical frame cover 2E has a pair of mounting plate portions 27, 27 and a vertical frame cover material 28.

[0073] A pair of mounting plate portions 27 are arranged along the surfaces 2b and 2c of the vertical frame body 2A, respectively. The mounting plate portions 27 are attached to the surfaces 2b and 2c by screws 271. The mounting plate portions 27 are provided with engaging wall portions 272 and protruding wall portions 273 that project outward in the width direction.

[0074] The vertical frame cover material 28 is composed of a single member that is continuously arranged from both sides 2b and 2c in the width direction of the vertical frame body 2A to the indoor side surface 2a. The vertical frame cover material 28 has a pair of cover plate portions 281 and an indoor side connecting plate portion 283.

[0075] The cover plate portion 281 is positioned on the outside in the width direction of the mounting plate portion 27. The cover plate portion 281 is provided with an engaging wall portion 282 that extends inward in the width direction. The engaging wall portion 282 engages with the engaging wall portion 272 of the mounting plate portion 27. Between the mounting plate portion 27 and the cover plate portion 281, a hollow portion S22 is formed, divided into multiple sections by a protruding wall portion 273. The hollow portion S22 is formed over substantially the entire length in the longitudinal direction of the vertical frame cover 2E.

[0076] In the curtain wall 100, vertical frame covers 2E are attached to the indoor-facing surfaces 2a, 2b, and 2c of the metal vertical frame body 2A. Intermediate transom covers 4B are attached to the lower parts of the lower surfaces 4a and 4b of the metal intermediate transom body 4A. Bottom frame covers 5B are attached to the upper surfaces 5a and 5b of the metal bottom frame body 5A. Since the exposure of the metal vertical frame body 2A, intermediate transom body 4A, and bottom frame body 5A to the indoors is suppressed, thermal insulation can be improved.

[0077] The vertical frame cover material 28 is composed of a single component that is continuously arranged from both sides 2b and 2c in the width direction of the vertical frame body 2A to the indoor side surface 2a. Since the portion that fits with the mounting plate portion 27 is not exposed, the interior design can be improved.

[0078] (Fifth embodiment) The curtain wall according to the fifth embodiment will be described mainly with reference to Figure 11. As shown in Figure 11, the inner plate portions 241 of the first vertical frame cover material 24G and the second vertical frame cover material 25G are in contact with the surfaces 2b and 2c of the vertical frame body 2A. No space is formed between the inner plate portions 241 of the first vertical frame cover material 24G and the second vertical frame cover material 25G and the surfaces 2b and 2c of the vertical frame body 2A.

[0079] An engagement groove 216 is formed on the surface of the bent wall portion 211 of the vertical frame body 2A that faces the outdoors, and is recessed inwards. A locking portion 661 of the shielding material 66G is locked into the engagement groove 216. An extension wall portion 663 is provided on the indoor side of the locking portion 661. The end of the extension wall portion 663 reaches the outer surface in the width direction of the inner plate portion 241. An extension portion 662 is provided on the extension wall portion 663 that extends inwards. The tip of the extension portion 662 is in contact with the surface 6b of the glass panel 6B.

[0080] In the curtain wall 100, a resin frame cover 1B is attached to the side of the metal frame body 1A that faces indoors. Glazing material 64, arranged in the glass grooves 215, 415, and 515, supports the glass panel 6B. The tip of the shielding material 66G is in contact with the surface 6b of the glass panel 6B. By providing the shielding material 66G separately from the glazing material 64, the thermal insulation can be improved.

[0081] Preferred embodiments of this disclosure have been described above with reference to the attached drawings, but it goes without saying that this disclosure is not limited to these examples. The shapes and combinations of the components shown in the above examples are just examples and can be modified in various ways based on design requirements, etc., without departing from the spirit of this disclosure.

[0082] The resin frame cover does not need to be attached to all of the indoor-facing surfaces of the metal frame body; it is sufficient if it is attached to at least a portion of the indoor-facing surfaces of the frame body.

[0083] A hollow section S21 is formed inside the vertical frame cover 2B, but this is not limited to that. A hollow section S21 does not necessarily have to be formed inside the vertical frame cover 2B.

[0084] Spaces S11 and S12 are formed between the vertical frame cover 2B and the surfaces 2a, 2b, and 2c of the vertical frame body 2A, but this is not limited to that. Spaces do not necessarily have to be formed between the vertical frame cover 2B and the surfaces 2a, 2b, and 2c of the vertical frame body 2A.

[0085] While the intermediate transom cover 4B and the lower frame cover 5B do not have hollow sections, they are not limited to this configuration. Hollow sections may be formed inside the intermediate transom cover 4B and the lower frame cover 5B, similar to the vertical frame cover 2B.

[0086] It is preferable, but not limited to, that the frame cover 1B is provided with a shielding material 66. The shielding material 66 may not be provided, or the outdoor end of the frame cover 1B may be in direct contact with the surface 6b of the glass panel 6B.

[0087] An air layer S31 is formed between the extended portion 662 of the shielding material 66 and the glazing material 64 along the surface 6b of the glass panel 6B, but this is not limited to the shielding material 66. The shielding material 66 may be provided in such a way that no air layer is formed between it and the glazing material 64.

[0088] The upper surface 423u of the bent wall portion 423 of the intermediate transom body 4A and the portion of the surface 4b of the intermediate transom body 4A above the bent wall portion 423 can be sprayed with the insulating material D1, but is not limited to this. The intermediate transom body 4A does not need to have a portion to which the insulating material D1 can be sprayed.

[0089] A resin cover made of resin is provided on the indoor side of the four-sided frame formed by a pair of vertical frames 2, an intermediate transom 4, and a lower frame 5, but this is not limited to the above. A resin cover made of resin may be provided on the indoor side of the four-sided frame formed by a pair of vertical frames 2, an upper frame 3, and an intermediate transom 4. [Explanation of symbols]

[0090] 1 Frame, 1A Frame body, 1B Frame cover, 2 Vertical frame, 2A Vertical frame body, 2B, 2C Vertical frame cover, 4 Intermediate transom, 4A Intermediate transom body, 6B Glass panel, 24 First vertical frame cover material, 25 Second vertical frame cover material, 28 Vertical frame cover material, 64 Glazing material, 66 Shielding material, 100 Curtain wall, 101 Curtain wall unit, 215, 415, 515 Glass groove, 423u Top surface (sprayed surface), D1 Insulation material, S11, S12, S14, S15 Space, S21 Hollow, S31 Air layer

Claims

1. A metal frame body formed in a frame shape, The frame body comprises a resin frame cover attached to the side of the frame body facing the indoor side, The frame cover attached to the vertical frame body of the frame body has a pair of vertical frame cover materials arranged on both sides in the width direction of the vertical frame body, A curtain wall unit in which one end of the pair of vertical frame cover members overlaps the indoor side of the other end of the vertical frame cover member.

2. The curtain wall unit according to claim 1, wherein a hollow portion is formed in the frame cover.

3. The curtain wall unit according to claim 1 or 2, wherein a space is formed between the frame cover and the surface of the frame body facing the indoor side.

4. A glass panel positioned inside the frame body, The frame cover comprises a shielding material provided at the end facing the glass panel side, The curtain wall unit according to claim 1 or 2, wherein the leading edge of the shielding material is in contact with the glass panel.

5. The frame body has a glass groove formed therein where the end of the glass panel is positioned. A glazing material is provided between the indoor side of the glass panel and the glass groove. The curtain wall unit according to claim 4, wherein an air layer is formed between the shielding material and the glazing material.

Images