CN220521699U - Semi-upright composite heat-insulating energy-saving glass curtain wall structure - Google Patents
Semi-upright composite heat-insulating energy-saving glass curtain wall structure Download PDFInfo
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- CN220521699U CN220521699U CN202321947931.3U CN202321947931U CN220521699U CN 220521699 U CN220521699 U CN 220521699U CN 202321947931 U CN202321947931 U CN 202321947931U CN 220521699 U CN220521699 U CN 220521699U
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- 239000011521 glass Substances 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 238000004321 preservation Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 10
- 239000002390 adhesive tape Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005034 decoration Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000006056 electrooxidation reaction Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- Load-Bearing And Curtain Walls (AREA)
Abstract
The utility model relates to the technical field of building decoration, and discloses a semi-upright composite heat-insulating energy-saving glass curtain wall structure, which comprises connecting rods and semi-uprights arranged on cross beams, wherein a curtain wall panel is arranged on the semi-uprights through a fixing assembly, a cavity is formed between two adjacent semi-uprights, the inside and the outside of the cavity are respectively blocked by a support plate and a steel plate, and a heat-insulating layer is arranged between the support plate and the steel plate; one end of the connecting rod is arranged in the cavity, and the other end extends to the outer side of the curtain wall panel; the semi-upright post and the heat preservation layer can save materials, improve economic benefit and increase heat preservation and insulation performance; the curtain wall panel can be quickly fixed on the half upright post through the fixing component, and the sufficient installation and operation space is provided; the device has the advantages of attractive overall structure, easy maintenance, safety, reliability, simplicity, convenience and rapidness, and has the function of reducing the manufacturing cost of products.
Description
Technical Field
The utility model relates to the technical field of building decoration, in particular to a semi-upright composite heat-insulating energy-saving glass curtain wall structure.
Background
Along with the improvement of the living standard of people, pursuit of living quality is also higher and higher; nowadays, glass curtain walls are widely used, and the higher the curtain wall is, the more beautiful the facade of the curtain wall is; the external decoration is more and more remarkable; in particular to a wide curtain wall, in order to express the effect of a straight vertical face, a plurality of vertical lines are made on the vertical face, and the lines are the upright post positions of the curtain wall. As the separation of curtain facades, the outer separation columns of curtain walls are the most common, and the outer columns of wide curtain walls are wider and wider. The common practice of the outer partition column of the curtain wall is to make a connecting rod between two upright columns at the inner side of the curtain wall, and the connecting rod extends to the outer side of the outer surface of the curtain wall and is connected with a decorative strip.
However, under the general condition, the curtain wall adopts aluminum alloy full stand columns, so that the material waste is relatively large, and the economical efficiency is poor; meanwhile, as the cavity between the adjacent upright posts is larger, the whole curtain wall has poor heat preservation and insulation performance, which is not beneficial to energy conservation; in addition, the connection between the metal pieces is easy to generate corrosion phenomenon, and the structural strength is seriously affected. In addition, certain structures are unreasonable in arrangement, no operation space exists during installation, actual operation cannot be connected at all, stress distribution is unreasonable, and reworking and material waste of design and processing are caused; and a cold bridge is easy to form, which is more serious in consequences of delay of construction period and influence on engineering quality.
Disclosure of Invention
The utility model aims to solve the problem of providing a half-upright composite heat-insulating energy-saving glass curtain wall structure, which uses half uprights to replace full uprights as uprights of the curtain wall, and fills heat-insulating materials in cavities formed between two adjacent half uprights, so that materials can be saved, economic benefit can be improved, and heat-insulating performance can be improved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the semi-upright composite heat-insulating energy-saving glass curtain wall structure comprises connecting rods and semi-uprights arranged on cross beams, wherein a curtain wall panel is arranged on the semi-uprights through a fixing assembly, a cavity is formed between two adjacent semi-uprights, the inside and the outside of the cavity are respectively blocked by a support plate and a steel plate, and a heat-insulating layer is arranged between the support plate and the steel plate;
one end of the connecting rod is arranged in the cavity, the other end of the connecting rod extends to the outer side of the curtain wall panel, a decorative strip with one end open is arranged on the connecting rod at the outer side of the curtain wall panel, and the open end of the decorative strip is connected with the fixing assembly.
In a preferred embodiment of the utility model, the fixing component comprises a ribbed plate, one end of the ribbed plate is fixedly connected with the half upright post through a bolt, and the other end of the ribbed plate is propped against the outer side of the curtain wall panel; one side with gusset with ornamental strip fixed connection, just the inboard of curtain panel can support and lean on the half stand.
In a preferred embodiment of the utility model, an adhesive tape is arranged between the ribbed plate and the curtain wall panel, and a heat insulation strip is arranged between the ribbed plate and the semi-upright post.
In a preferred embodiment of the utility model, a filling sealing element is arranged in the gap between the half upright post and the steel plate as well as between the steel plate and the curtain wall panel, and a filling sealing element is also arranged between the rib plate and the decorative strip.
In a preferred embodiment of the utility model, the cross beam is connected with the half upright by a sleeve core, the sleeve core is arranged in the cross beam, and the sleeve core is fixedly connected with the half upright by a pin.
In a preferred embodiment of the present utility model, two ends of the connecting rod are respectively and fixedly connected with a first square tube and a second square tube, two ends of the first square tube are respectively and fixedly connected with two adjacent half-upright posts, and one side of the second square tube opposite to the connecting rod is connected with the decorative strip.
In a preferred embodiment of the utility model, the two sides of the connecting rod are fixedly connected with first angle steel, the second angle steel is arranged below the first angle steel, and the second angle steel is fixedly connected with the decorative strip through angle codes.
In a preferred embodiment of the present utility model, elastic gaskets are arranged between the half upright post, the cross beam and the first square tube; the semi-upright is connected with the support plate through a pressing plate, one end of the pressing plate is fixed on the semi-upright, and the other end of the pressing plate is buckled on the inner side of the support plate.
In a preferred embodiment of the utility model, a first clamping groove is formed in one end, close to the curtain wall panel, of the half upright post, one end of the bolt is embedded into the first clamping groove, and the other end of the bolt penetrates through the heat insulation strip and the rib plate and is connected with a nut in a screwing mode.
In a preferred embodiment of the present utility model, a second clamping groove is further provided at one end of the half upright post near the curtain wall panel, one end of the adhesive tape is embedded into the second clamping groove, and the other end is abutted against the inner side of the curtain wall panel.
The utility model solves the defects existing in the background technology, and has the beneficial effects that:
(1) According to the utility model, the semi-upright post and the heat insulation layer can save materials, improve economic benefit and increase heat insulation performance; the curtain wall panel can be quickly fixed on the half upright post through the fixing component, and the sufficient installation and operation space is provided; the device has the advantages of attractive overall structure, easy maintenance, safety, reliability, simplicity, convenience and rapidness, and has the function of reducing the manufacturing cost of products.
(2) In the utility model, the semi-upright posts, the cross beam and the first side pipe can be separated by the elastic gaskets, so that the electrochemical corrosion is prevented from being carried out, and the integral structural strength is prevented from being influenced.
(3) In the utility model, the components of the curtain wall structure are firmly and reliably connected, the installation process is simple, the installation is quick, the wind pressure resistance is excellent, the cold bridge effect is avoided, the waterproof performance is excellent, the decoration effect is good, and the elevation effect is rich.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic top view of a preferred embodiment of the present utility model;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged partial schematic view at C in FIG. 1;
FIG. 4 is a schematic view of the structure of a half column according to the preferred embodiment of the present utility model;
FIG. 5 is a schematic structural view of a full column;
wherein, 1, half column; 11. a first clamping groove; 12. a second clamping groove; 2. a cross beam; 21. a sleeve core; 31. a support plate; 32. a pressing plate; 33. a steel plate; 4. curtain wall panels; 51. a first square tube; 52. a connecting rod; 53. a second square tube; 55. a decorative strip; 6. a fixing assembly; 61. a rib plate is arranged; 62. a bolt; 63. a heat insulating strip; 71. an adhesive tape; 72. an elastic pad; 73. filling the sealing member; 74. a heat preservation layer; 81. a first angle steel; 82. a second angle steel; 83. and (5) corner codes.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.
As shown in fig. 1 and fig. 4-5, a semi-upright composite heat-insulating energy-saving glass curtain wall structure comprises a connecting rod 52 and a semi-upright 1 arranged on a cross beam 2, wherein the semi-upright 1 replaces a full upright to serve as an upright of the curtain wall, so that materials can be saved, the manufacturing cost of products can be reduced, and the economic benefit can be improved; a cavity is formed between two adjacent half upright posts 1, a curtain wall panel 4 is fixedly arranged on the half upright posts 1, a first clamping groove 11 and a second clamping groove 12 are formed in one end, close to the curtain wall panel 4, of each half upright post 1, and the second clamping groove 12 is closer to the other end of the half upright post 1.
The two ends of the connecting rod 52 are fixedly connected with a first square pipe 51 and a second square pipe 53 respectively, the first square pipe 51 is positioned in the cavity, and the two ends of the first square pipe are fixedly connected with two adjacent half upright posts 1 respectively; and the second square tube 53 is located outside the curtain wall panel 4, i.e., outdoors, along with the extension of the connection rod 52; a decorative strip 55 with one end open is arranged on the connecting rod 52 positioned on the outer side of the curtain wall panel 4, and the open end of the decorative strip 55 is connected with the fixing component 6; the connecting rod 52 and the decorative strip 55 arranged on the connecting rod form an outer partition column of the curtain wall structure so as to show the upright effect of the whole curtain wall structure; the decorative strip 55 is made of an aluminum veneer, specifically an aluminum veneer with the thickness of 2.5 mm.
The two sides of the connecting rod 52 are fixedly connected with the first angle steel 81, the second angle steel 82 is arranged below the first angle steel 81, and the second angle steel 82 is fixedly connected with the decorative strip 55 through the angle code 83; similarly, the second square tube 53 is fixedly connected with the decorative strip 55 through the corner bracket 83; namely, the corner connector 83 is fixedly connected with the second square tube 53 and the second angle steel 82 through self-tapping screws at first, and then is fixed with the decorative strip 55 through aluminum blind rivets, so that the fixing strength of the end part and the periphery side of the decorative strip 55 is improved.
Further, the cross beam 2 is connected with the half upright 1 through a sleeve core 21, the sleeve core 21 is arranged in the cross beam 2, and the sleeve core 21 is fixedly connected with the half upright 1 through a stainless steel pin.
The above-mentioned half upright 1, the cross beam 2, the sleeve core 21, the corner brace 83 and other parts are all made of aluminum alloy materials preferentially, and the cross section of the half upright 1 made of aluminum alloy materials is simple and easy to extrude and form; the corner connector 83 is a hardware for connecting 90-degree right-angle intersecting members, and the model and form of the corner connector 83 and the type of materials are determined according to the stress of the connected members, so that the corner connector is often used in decoration engineering and furniture assembly. The angle steel is commonly called angle iron, and is a strip steel with two sides perpendicular to each other to form an angle. The connecting rod 52, the first square tube 51 and the second square tube 53 are all preferentially steel square tubes, the connecting rod 52 positioned outdoors is supported by struts which are both steel square tubes so as to improve the supporting strength of the connecting rod, and steel members formed by angle steel and the steel square tubes are fixedly connected by adopting long welding seams; in addition, the curtain wall panel 4 adopts laminated hollow homogeneous toughened glass to meet the requirement of the laminated hollow homogeneous toughened glass as curtain wall glass.
As shown in fig. 1 and 3, the inside and outside of the cavity are blocked by a support plate 31 and a steel plate 33 respectively; the half upright 1 is connected with the support plate 31 through a pressing plate 32, one end of the pressing plate 32 is fixed on the half upright 1, and the other end is buckled and pressed on the inner side of the support plate 31; the steel plate 33 is fixed on the semi-upright 1 through screws and angle irons, the support plate 31 and the pressing plate 32 are made of aluminum alloy materials preferentially, and the steel plate 33 is galvanized on the surface to improve the outdoor environment corrosion resistance; in summary, the stability between the two half-uprights 1 can be enhanced by the blocking of the support plate 31 and the steel plate 33.
The heat-insulating layer 74 is arranged between the support plate 31 and the steel plate 33, and the heat-insulating layer 74 is arranged in the cavity to reduce the degree of indoor and outdoor heat exchange, so that good support is improved for the indoor environment; specifically, the heat-insulating layer 74 is preferably made of heat-insulating rock wool.
As shown in fig. 1-2, the curtain wall panel 4 is mounted on the half-pillar 1 by the fixing assembly 6, and can be quickly disassembled and assembled by using the fixing assembly 6, and the structure provides enough space for the disassembly and assembly work.
The fixing assembly 6 comprises a ribbed plate 61, one end of the ribbed plate 61 is fixedly connected with the half upright 1 through a bolt 62, and the other end of the ribbed plate abuts against the outer side of the curtain wall panel 4; one side with rib plates 61 is fixedly connected with the decorative strips 55, and the inner side of the curtain wall panel 4 can be propped against the half upright 1; a heat insulation strip 63 is arranged between the ribbed plate 61 and the half upright 1.
Specifically, one end of the bolt 62 is embedded into the first clamping groove 11, and the other end penetrates through the heat insulation strip 63 and the ribbed plate 61 and is connected with the nut in a screwing way; along with the screwing of the nuts on the bolts 62, the other end of the rib plate 61 is pushed to press the curtain wall panel 4 on the half upright 1; in order to reduce the extrusion damage to the curtain wall panel 4 and increase the friction force, corresponding adhesive tapes 71 can be arranged on two sides of the curtain wall panel 4, the adhesive tapes 71 are made of ethylene propylene diene monomer rubber, and one end of the adhesive tape 71 close to the inner side of the curtain wall panel 4 can be embedded into the second clamping groove 12.
In order to enhance the tightness of the curtain wall structure and improve the waterproof effect, a filling sealing member 73 may be disposed in the gap between the half upright 1 and the steel plate 33 and the curtain wall panel 4, and similarly, the same filling sealing member 73 is disposed between the ribbed plate 61 and the decorative strip 55, and the filling sealing member 73 is specifically a combination of a foam rod and a sealant.
In order to prevent the electrochemical corrosion of the curtain wall structure from proceeding and avoid affecting the overall structural strength thereof, an elastic spacer 72 may be provided between the half-uprights 1 and the cross-beams 2 and the first side pipes 51.
The specific working principle of the technical scheme disclosed above is as follows:
the curtain wall structure adopts aluminum alloy semi-upright columns 1, the inside and the outside of a cavity formed between two adjacent semi-upright columns 1 are respectively isolated by adopting an aluminum alloy plate and a galvanized steel plate 33, heat-insulating rock wool is filled in the middle, the outside of the curtain wall adopts a framework formed by a steel square pipe and galvanized angle steel, long welding seams are adopted between steel members for connection, and elastic gaskets 72 are adopted between a cross arm beam of the steel framework and the aluminum alloy semi-upright columns 1 for preventing electrochemical corrosion; the curtain wall beam 2 and the half upright column 1 are connected by inserting stainless steel pins into the sleeve cores 21. The exposed part of the outer side of the curtain wall glass adopts a mode of connecting aluminum veneers by making aluminum alloy corner brackets 83 on a steel frame, so that the whole structure is concise and compact, the installation is convenient, and the structure is safe.
In conclusion, the vertical rods of the curtain wall save materials, can reduce cold bridges of the curtain wall, have good heat preservation and insulation performance, and are not easy to cause electrochemical corrosion due to connection of materials, so that the structural strength is ensured; the components are reasonably selected, the structural arrangement is proper, and sufficient installation and operation space is provided; the whole structure is attractive, easy to overhaul, safe and reliable; the aluminum alloy semi-upright column 1 has a simple section shape and is easy to extrude and form; the curtain wall is firm and reliable in connection, excellent in wind pressure resistance, excellent in waterproof performance and good in decoration effect; the structure has simple installation process and quick installation, and can improve the production and processing efficiency, reduce the installation cost and reduce the environmental pollution; in a word, this curtain wall construction atress is reasonable, safe, economical, pleasing to the eye, energy-conserving, maintenance cost is low, can use widely in a large number.
The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. The utility model provides a half stand composite heat preservation energy-conserving glass curtain wall structure which characterized in that: the curtain wall panel (4) is installed on the half upright posts (1) through fixing components (6), a cavity is formed between two adjacent half upright posts (1), the inside and the outside of the cavity are blocked through a support plate (31) and a steel plate (33), and an insulation layer (74) is arranged between the support plate (31) and the steel plate (33);
one end of the connecting rod (52) is arranged in the cavity, the other end of the connecting rod extends to the outer side of the curtain wall panel (4), a decorative strip (55) with one end open is arranged on the connecting rod (52) at the outer side of the curtain wall panel (4), and the open end of the decorative strip (55) is connected with the fixing assembly (6).
2. The semi-upright composite insulating energy-saving glass curtain wall structure according to claim 1, wherein: the fixing assembly (6) comprises a ribbed plate (61), one end of the ribbed plate (61) is fixedly connected with the half upright post (1) through a bolt (62), and the other end of the ribbed plate is propped against the outer side of the curtain wall panel (4); one side with gusset (61) with ornamental strip (55) fixed connection, just the inboard of curtain panel (4) can support and lean on half stand (1).
3. The semi-upright composite insulating energy-saving glass curtain wall structure according to claim 2, wherein: an adhesive tape (71) is arranged between the ribbed plate (61) and the curtain wall panel (4), and a heat insulation strip (63) is arranged between the ribbed plate and the semi-upright (1).
4. The semi-upright composite insulating energy-saving glass curtain wall structure according to claim 2, wherein: a filling sealing piece (73) is arranged in a gap between the half upright post (1) and the steel plate (33) and between the half upright post and the curtain wall panel (4), and the filling sealing piece (73) is also arranged between the rib plate (61) and the decorative strip (55).
5. The semi-upright composite insulating energy-saving glass curtain wall structure according to claim 1, wherein: the cross beam (2) is connected with the half upright (1) through a sleeve core (21), the sleeve core (21) is arranged in the cross beam (2), and the sleeve core (21) is fixedly connected with the half upright (1) through a pin.
6. The semi-upright composite insulating energy-saving glass curtain wall structure according to claim 1, wherein: the two ends of the connecting rod (52) are fixedly connected with a first square tube (51) and a second square tube (53) respectively, the two ends of the first square tube (51) are fixedly connected with two adjacent half upright posts (1) respectively, and the second square tube (53) is opposite to one side of the connecting rod (52) and is connected with the decorative strip (55).
7. The semi-upright composite insulating energy-saving glass curtain wall structure according to claim 6, wherein: the two sides of the connecting rod (52) are fixedly connected with first angle steel (81), a second angle steel (82) is arranged below the first angle steel (81), and the second angle steel (82) is fixedly connected with the decorative strip (55) through an angle code (83).
8. The semi-upright composite insulating energy-saving glass curtain wall structure according to claim 6, wherein: elastic gaskets (72) are arranged between the half upright post (1) and the cross beam (2) and between the half upright post and the first square pipe (51); the semi-upright (1) is connected with the support plate (31) through a pressing plate (32), one end of the pressing plate (32) is fixed on the semi-upright (1), and the other end of the pressing plate is buckled and pressed on the inner side of the support plate (31).
9. A semi-upright composite insulating energy saving glass curtain wall structure according to claim 3, wherein: one end of the half upright post (1) close to the curtain wall panel (4) is provided with a first clamping groove (11), one end of the bolt (62) is embedded into the first clamping groove (11), and the other end of the bolt penetrates through the heat insulation strip (63) and the rib plate (61) and then is connected with a nut in a screwed mode.
10. The semi-upright composite insulating energy-saving glass curtain wall structure according to claim 9, wherein: the one end that half stand (1) is close to curtain panel (4) still is provided with second draw-in groove (12), the one end embedding of adhesive tape (71) in second draw-in groove (12), the other end supports and leans on the inboard of curtain panel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321947931.3U CN220521699U (en) | 2023-07-24 | 2023-07-24 | Semi-upright composite heat-insulating energy-saving glass curtain wall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321947931.3U CN220521699U (en) | 2023-07-24 | 2023-07-24 | Semi-upright composite heat-insulating energy-saving glass curtain wall structure |
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| Publication Number | Publication Date |
|---|---|
| CN220521699U true CN220521699U (en) | 2024-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321947931.3U Active CN220521699U (en) | 2023-07-24 | 2023-07-24 | Semi-upright composite heat-insulating energy-saving glass curtain wall structure |
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| Country | Link |
|---|---|
| CN (1) | CN220521699U (en) |
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2023
- 2023-07-24 CN CN202321947931.3U patent/CN220521699U/en active Active
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