CN213572554U - Aluminum alloy curtain wall frame connection structure - Google Patents
Aluminum alloy curtain wall frame connection structure Download PDFInfo
- Publication number
- CN213572554U CN213572554U CN202022470698.7U CN202022470698U CN213572554U CN 213572554 U CN213572554 U CN 213572554U CN 202022470698 U CN202022470698 U CN 202022470698U CN 213572554 U CN213572554 U CN 213572554U
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- steel pipe
- galvanized steel
- buckle
- recess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 86
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 37
- 239000008397 galvanized steel Substances 0.000 claims abstract description 37
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000005553 drilling Methods 0.000 claims abstract description 19
- 230000008719 thickening Effects 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 26
- 239000004411 aluminium Substances 0.000 abstract description 9
- 239000011521 glass Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 230000035515 penetration Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- Load-Bearing And Curtain Walls (AREA)
Abstract
The utility model discloses an aluminum alloy curtain wall frame connecting structure, which comprises an aluminum alloy section bar in a frame, wherein a galvanized steel pipe penetrates through the middle part of the aluminum alloy section bar, a limiting hole b is arranged on the galvanized steel pipe, the inner diameter of the limiting hole b is matched with the outer diameter of a self-drilling screw, a cross beam is connected on the outer wall of the galvanized steel pipe through the self-drilling screw, an aluminum veneer gasket is arranged on the contact surface of the cross beam and the aluminum alloy section bar, the surface of the aluminum alloy section bar is connected with a buckle through a countersunk screw thread, a limiting hole a is arranged on the aluminum alloy section bar, the countersunk screw is matched with the limiting hole a, a window frame is clamped on the left side of the buckle, the frame structure is simple and convenient to install and disassemble, the aluminum alloy section bar is used for supporting a curtain wall frame, the galvanized steel pipe is used for supporting the cross beam to ensure that the installation is more stable, the aluminium veneer gasket is used for preventing the wearing and tearing of crossbeam and aluminium alloy ex-trusions's contact surface, and the design of buckle brings bigger convenience for the installation, makes the easy dismouting of window frame in order to prevent that it is cracked to go up glass.
Description
Technical Field
The utility model relates to a curtain frame field, more specifically say, relate to an aluminum alloy curtain wall frame connection structure.
Background
The curtain wall is an outer wall enclosure of a building, does not bear load, is hung like a curtain, is also called as a curtain wall, is a light wall with decorative effect commonly used by modern large and high-rise buildings, generally consists of panels such as glass, metal plates, stone plates, ceramic plates and the like, and supporting structures such as aluminum beam aluminum alloy sections, steel structures, glass ribs and the like at the back, can have certain displacement capacity relative to a main body structure or has certain deformation capacity per se, and does not bear the building peripheral protective structure or decorative structure acted by the main body structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an aluminum alloy curtain wall frame attach structure aims at the more problem of handing-over department's fragmentary article among the effectual solution prior art.
In order to solve the above problem, the utility model adopts the following technical scheme:
an aluminum alloy curtain wall frame connecting structure comprises an aluminum alloy section in a frame, wherein a galvanized steel pipe penetrates through the middle of the aluminum alloy section, a limiting hole b is formed in the galvanized steel pipe, the inner diameter of the limiting hole b is matched with the outer diameter of a self-drilling screw, a cross beam is connected to the outer wall of the galvanized steel pipe through the self-drilling screw in a threaded manner, an aluminum single plate gasket is arranged on the contact surface of the cross beam and the aluminum alloy section, a buckle is connected to the surface of the aluminum alloy section through a countersunk screw in a threaded manner, a limiting hole a is formed in the aluminum alloy section, the countersunk screw is matched with the limiting hole a, a window frame is clamped on the left side of the buckle, the frame is simple in structure and convenient to install and disassemble, the aluminum alloy section is used for supporting a curtain wall frame, the galvanized steel pipe is used for supporting the cross beam to enable the frame to be more, the aluminium veneer gasket is used for preventing the wearing and tearing of crossbeam and aluminium alloy ex-trusions's contact surface, and the design of buckle brings bigger convenience for the installation, makes the easy dismouting of window frame in order to prevent that it is cracked to go up glass.
As a preferred scheme of the utility model, aluminium alloy ex-trusions's front is opened flutedly an, L shape groove an has all been opened to flutedly a's the left and right sides, aluminium alloy ex-trusions's the middle part left and right sides all has opened the rectangle opening, aluminium alloy ex-trusions is hollow thickening aluminum alloy, L shape groove an, flutedly an and rectangle opening integrated into one piece, rectangle open-ended internal diameter matches each other with the cross-section external diameter of galvanized steel pipe.
As an optimal scheme of the utility model, the galvanized steel pipe is solid aluminum alloy, it has the rectangle recess to open below the crossbeam, recess b is opened in the front of crossbeam, L shape groove b has all been opened on the front upper and lower two sides of crossbeam, the crossbeam is hollow thickening aluminum alloy, rectangle recess, recess b and L shape groove b integrated into one piece.
As an optimal scheme of the utility model, countersunk head screw and brill tail screw are the stainless steel, be provided with the internal thread in spacing hole an and the spacing hole b, the window frame is by hollow tube an, recess c and hollow tube b integrated into one piece, open at the outer wall middle part of window frame has recess c, both sides are provided with hollow tube an and hollow tube b around the recess c, the window frame is thickening aluminum alloy.
As a preferred scheme of the utility model, open at the buckle middle part has the fixed orifices, the right side of buckle is connected with rectangle portion a, the left side of buckle is provided with aluminium veneer portion, aluminium veneer portion left side is connected with rectangle portion b, rectangle portion b left side is connected with rectangle portion c, fixed orifices, rectangle portion a, aluminium veneer portion, rectangle portion b and rectangle portion c integrated into one piece, the buckle is the aluminum alloy.
Compared with the prior art, the utility model has the advantages of:
(1) this frame construction is simple, easy to assemble dismantles, the design of buckle brings bigger convenience for the installation, make the easy dismouting of window frame in order to prevent that it is cracked to last glass, the aluminum alloy ex-trusions that set up are used for supporting curtain wall frame, the galvanized steel pipe that sets up is used for supporting beam and makes its easy to assemble more firm, the spacing hole b of setting is used for restricting the mounted position of crossbeam, also be for conveniently boring the passing of tail screw simultaneously, the aluminium veneer gasket of setting is used for preventing the wearing and tearing of crossbeam and aluminum alloy ex-trusions's contact surface, the buckle of setting is used for making things convenient for the installation of window frame, the spacing hole an of setting is used for making things convenient for passing of countersunk screw, also be the mounted position.
(2) The recess an that sets up can make the rainwater conveniently flow, and the L shape groove a that sets up is used for making things convenient for the installation of window frame, and the hollow thickening aluminum alloy section bar durability that sets up is high corrosion resistance can the reinforce, and the rectangle opening of setting is for the convenient installation galvanized steel pipe. The solid aluminum alloy galvanized steel pipe that sets up can make the curtain frame durable more, and the rectangle recess that sets up is used for the convenient mounting on the galvanized steel pipe, and the recess b that sets up is used for flowing out rain, and water also is the easy mounting drill tail screw simultaneously, and the L shape groove b that sets up is used for making things convenient for the installation of window frame.
(3) The stainless steel countersunk screw and the brill tail screw of setting are used for preventing to meet water and rust, the screw thread that sets up in spacing hole an and spacing hole b is used for making things convenient for countersunk screw and the installation of brill tail screw, the hollow tube a that sets up is used for installing glass, make things convenient for rectangle portion b and rectangle portion c card to go into when the recess c that sets up is used for installing the buckle, the hollow tube b that sets up is used for the card to advance in the buckle, the fixed orifices that sets up are used for the convenient installation on aluminum alloy ex-trusions, the rectangle portion a that sets up is used for the card in aluminum alloy ex-trusions's recess a, the aluminium veneer portion of setting is used for the card in L shape groove a, the aluminium veneer gasket that sets up has.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic view of an aluminum alloy profile structure of the present invention;
FIG. 4 is a schematic view of the structure of the galvanized steel pipe of the present invention;
FIG. 5 is a schematic view of the cross beam structure of the present invention;
FIG. 6 is a schematic view of the window frame structure of the present invention;
fig. 7 is a schematic view of the buckle structure of the present invention.
The reference numbers in the figures illustrate:
1. an aluminum alloy profile; 101. an L-shaped groove a; 102. a groove a; 103. a rectangular opening; 2. a galvanized steel pipe; 3. a cross beam; 301. a rectangular groove; 302. an L-shaped groove b; 303. a groove b; 4. a window frame; 401. a hollow pipe a; 402. a groove c; 403. a hollow pipe b; 5. buckling; 501. a fixing hole; 502. a rectangular portion a; 503. an aluminum single plate portion; 504. a rectangular portion b; 505. a rectangular portion c; 6. a limiting hole a; 7. countersunk screws; 8. drilling a self screw; 9. a limiting hole b; 10. an aluminum veneer gasket.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1-7, an aluminum alloy curtain wall frame connection structure includes an aluminum alloy section 1 in a frame, a galvanized steel pipe 2 penetrates through the middle of the aluminum alloy section 1, a limiting hole b9 is formed in the galvanized steel pipe 2, the inner diameter of the limiting hole b9 is matched with the outer diameter of a self-drilling screw 8, a cross beam 3 is connected to the outer wall of the galvanized steel pipe 2 through the self-drilling screw 8 in a threaded manner, an aluminum veneer gasket 10 is arranged on the contact surface of the cross beam 3 and the aluminum alloy section 1, a buckle 5 is connected to the surface of the aluminum alloy section 1 through a countersunk screw 7 in a threaded manner, a limiting hole a6 is formed in the aluminum alloy section 1, the countersunk screw 7 is matched with the limiting hole a6, and a window frame 4 is clamped on the left side of the buckle 5.
In this embodiment, the aluminum alloy section bar 1 that sets up is used for supporting the curtain wall frame, the galvanized steel pipe 2 that sets up is used for supporting crossbeam 3 and makes its easy to assemble more firm, the spacing hole b9 that sets up is used for restricting the mounted position of crossbeam 3, also be for making things convenient for the passing of self-drilling screw 8 simultaneously, the aluminium veneer gasket 10 that sets up is used for preventing the wearing and tearing of crossbeam 3 and aluminum alloy section bar 1's contact surface, the buckle 5 that sets up is used for making things convenient for the installation of window frame 4, the spacing hole a6 that sets up is used for making things convenient for the passing of countersunk screw 7, also be for restricting the mounted position of buckle 5 simultaneously.
Specifically, referring to fig. 3 and 4, a groove a102 is formed in the front surface of the aluminum alloy profile 1, L-shaped grooves a101 are formed in both the left and right sides of the groove a102, rectangular openings 103 are formed in both the left and right sides of the middle of the aluminum alloy profile 1, the aluminum alloy profile 1 is made of hollow thickened aluminum alloy, the L-shaped grooves a101, the groove a102 and the rectangular openings 103 are integrally formed, and the inner diameter of the rectangular openings 103 is matched with the outer diameter of the cross section of the galvanized steel pipe 2.
In this embodiment, the recess a102 that sets up can make the rainwater conveniently flow out, and the L-shaped groove a101 that sets up is used for making things convenient for the installation of window frame 4, and the high corrosion resistance of the high durability of hollow thickening aluminum alloy section bar 1 durability that sets up is strong, and the rectangle opening 103 that sets up is for the installation galvanized steel pipe 2 of convenience.
Specifically, referring to fig. 4 and 5, the galvanized steel pipe 2 is made of solid aluminum alloy, a rectangular groove 301 is formed below the cross beam 3, a groove b303 is formed on the front surface of the cross beam 3, L-shaped grooves b302 are formed on the upper surface and the lower surface of the front surface of the cross beam 3, the cross beam 3 is made of hollow thickened aluminum alloy, and the rectangular groove 301, the groove b303 and the L-shaped groove b302 are integrally formed.
In this embodiment, the solid aluminum alloy galvanized steel pipe 2 that sets up can make the curtain frame durable more, and the rectangle recess 301 that sets up is used for the convenient mounting on galvanized steel pipe 2, and the recess b303 that sets up is used for flowing out rain, and water also is the easy mounting drill tail screw 8 simultaneously, and the L shape groove b302 that sets up is used for making things convenient for the installation of window frame 4.
Specifically, referring to fig. 1 and 6, the countersunk head screw 7 and the self drilling screw 8 are both made of stainless steel, internal threads are arranged in the limiting hole a6 and the limiting hole b9, the window frame 4 is integrally formed by a hollow tube a401, a groove c402 and a hollow tube b403, a groove c402 is formed in the middle of the outer wall of the window frame 4, the hollow tube a401 and the hollow tube b403 are arranged on the front side and the rear side of the groove c402, and the window frame 4 is made of thickened aluminum alloy.
In this embodiment, the stainless steel countersunk head screw 7 and the self drilling screw 8 are used for preventing rusting when encountering water, the threads arranged in the limiting hole a6 and the limiting hole b9 are used for facilitating the installation of the countersunk head screw 7 and the self drilling screw 8, the hollow tube a401 is used for installing glass, the groove c402 is used for conveniently clamping the rectangular part b504 and the rectangular part c505 when the buckle 5 is installed, and the hollow tube b403 is used for clamping the buckle 5.
Specifically, referring to fig. 1 and 7, a fixing hole 501 is formed in the middle of the buckle 5, a rectangular portion a502 is connected to the right side of the buckle 5, an aluminum single plate portion 503 is disposed on the left side of the buckle 5, a rectangular portion b504 is connected to the left side of the aluminum single plate portion 503, a rectangular portion c505 is connected to the left side of the rectangular portion b504, the fixing hole 501, the rectangular portion a502, the aluminum single plate portion 503, the rectangular portion b504, and the rectangular portion c505 are integrally formed, and the buckle 5 is made of an aluminum alloy.
In this embodiment, the fixing hole 501 is provided for easy installation on the aluminum alloy profile 1, the rectangular portion a502 is provided for being clamped in the groove a102 of the aluminum alloy profile 1, the aluminum single plate portion 503 is provided for being clamped in the L-shaped groove a101, and the aluminum single plate gasket 10 is provided with oxidation resistance and corrosion resistance.
The working principle is as follows:
the aluminum alloy curtain wall frame connecting structure comprises a galvanized steel pipe 2 penetrating through a rectangular opening 103 formed on an aluminum alloy section 1, an aluminum veneer gasket 10 arranged on the outer wall of the galvanized steel pipe 2 close to the aluminum alloy section 1, a groove b303 of a cross beam 3 arranged on the outer wall of the galvanized steel pipe 2 and fixed by a self-drilling screw 8, a buckle 5 fixed in a limit hole a6 formed on the aluminum alloy section 1 by a countersunk screw 7, a window frame 4 directly clamped in the buckle 5, the aluminum alloy section 1 for supporting a curtain wall frame, the galvanized steel pipe 2 for supporting the cross beam 3 to make the installation more stable, a limit hole b9 for limiting the installation position of the cross beam 3 and facilitating the penetration of the self-drilling screw 8, the aluminum veneer gasket 10 for preventing the abrasion of the contact surface of the cross beam 3 and the aluminum alloy section 1, the buckle 5 for facilitating the installation of the window frame 4, a limit hole a6 for facilitating the penetration of the self-drilling screw 7, meanwhile, in order to limit the installation position of the buckle 5, the groove a102 can facilitate rainwater to flow out, the L-shaped groove a101 is used for facilitating the installation of the window frame 4, the hollow thickened aluminum alloy section bar 1 is high in durability and strong in corrosion resistance, the rectangular opening 103 is used for facilitating the installation of the galvanized steel pipe 2, the solid aluminum alloy galvanized steel pipe 2 can enable the curtain wall frame to be firmer and more durable, the rectangular groove 301 is used for facilitating the installation on the galvanized steel pipe 2, the groove b303 is used for flowing out rainwater and facilitating the installation of the self-drilling screw 8, the L-shaped groove b302 is used for facilitating the installation of the window frame 4, the stainless steel countersunk screw 7 and the self-drilling screw 8 are used for preventing rusting when encountering water, the threads arranged in the limiting hole a6 and the limiting hole b9 are used for facilitating the installation of the countersunk screw 7 and the self-drilling screw 8, the hollow tube a401 is used for installing glass, and the groove c402 is used for facilitating the clamping, hollow tube b403 is used for clamping in buckle 5, fixing hole 501 is used for conveniently installing on aluminum alloy section bar 1, rectangular portion a502 is used for clamping in groove a102 of aluminum alloy section bar 1, and aluminum single plate portion 503 is used for clamping in L-shaped groove a 101.
The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the improvement concept of the present invention within the technical scope disclosed in the present invention.
Claims (5)
1. The utility model provides an aluminum alloy curtain wall frame connection structure, includes aluminum alloy ex-trusions (1) in the frame, its characterized in that: the aluminum alloy section bar is characterized in that a galvanized steel pipe (2) penetrates through the middle of the aluminum alloy section bar (1), a limiting hole b (9) is formed in the galvanized steel pipe (2), a cross beam (3) is connected to the outer wall of the galvanized steel pipe (2) through a self-drilling screw (8) in a threaded mode, the inner diameter of the limiting hole b (9) is matched with the outer diameter of the self-drilling screw (8), an aluminum veneer gasket (10) is arranged on the contact surface of the cross beam (3) and the aluminum alloy section bar (1), a buckle (5) is connected to the surface of the aluminum alloy section bar (1) through a countersunk screw (7) in a threaded mode, a limiting hole a (6) is formed in the aluminum alloy section bar (1), the countersunk screw (7) is matched with the limiting hole a (6) in a matched mode, and a window frame (4) is.
2. The aluminum alloy curtain wall frame connecting structure of claim 1, wherein: the front of aluminum alloy ex-trusions (1) is opened flutedly a (102), L shape groove a (101) have all been opened to the left and right sides of recess a (102), rectangle opening (103) have all been opened to the middle part left and right sides of aluminum alloy ex-trusions (1), aluminum alloy ex-trusions (1) are hollow thickening aluminum alloy, L shape groove a (101), recess a (102) and rectangle opening (103) integrated into one piece, the internal diameter of rectangle opening (103) and the cross-section external diameter of galvanized steel pipe (2) match each other.
3. The aluminum alloy curtain wall frame connecting structure of claim 1, wherein: galvanized steel pipe (2) are solid aluminum alloy, open below crossbeam (3) has rectangle recess (301), open in the front of crossbeam (3) has recess b (303), L shape groove b (302) have all been opened on the front upper and lower two sides of crossbeam (3), crossbeam (3) are hollow thickening aluminum alloy, rectangle recess (301), recess b (303) and L shape groove b (302) integrated into one piece.
4. The aluminum alloy curtain wall frame connecting structure of claim 1, wherein: countersunk screw (7) and brill tail screw (8) are the stainless steel, be provided with the internal thread in spacing hole a (6) and spacing hole b (9), window frame (4) are by hollow tube a (401), recess c (402) and hollow tube b (403) integrated into one piece, open at the outer wall middle part of window frame (4) has recess c (402), both sides are provided with hollow tube a (401) and hollow tube b (403) around recess c (402), window frame (4) are thickening aluminum alloy.
5. The aluminum alloy curtain wall frame connecting structure of claim 1, wherein: the middle of the buckle (5) is provided with a fixing hole (501), the right side of the buckle (5) is connected with a rectangular part a (502), the left side of the buckle (5) is provided with an aluminum single plate part (503), the left side of the aluminum single plate part (503) is connected with a rectangular part b (504), the left side of the rectangular part b (504) is connected with a rectangular part c (505), the fixing hole (501), the rectangular part a (502), the aluminum single plate part (503), the rectangular part b (504) and the rectangular part c (505) are integrally formed, and the buckle (5) is made of aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022470698.7U CN213572554U (en) | 2020-10-30 | 2020-10-30 | Aluminum alloy curtain wall frame connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022470698.7U CN213572554U (en) | 2020-10-30 | 2020-10-30 | Aluminum alloy curtain wall frame connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213572554U true CN213572554U (en) | 2021-06-29 |
Family
ID=76531540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022470698.7U Expired - Fee Related CN213572554U (en) | 2020-10-30 | 2020-10-30 | Aluminum alloy curtain wall frame connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213572554U (en) |
-
2020
- 2020-10-30 CN CN202022470698.7U patent/CN213572554U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Granted publication date: 20210629 |