CN115012767A - Old window reconstruction construction process - Google Patents
Old window reconstruction construction process Download PDFInfo
- Publication number
- CN115012767A CN115012767A CN202210808611.3A CN202210808611A CN115012767A CN 115012767 A CN115012767 A CN 115012767A CN 202210808611 A CN202210808611 A CN 202210808611A CN 115012767 A CN115012767 A CN 115012767A
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- window
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- new window
- old
- auxiliary frame
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- 238000010276 construction Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000008569 process Effects 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 13
- 238000003801 milling Methods 0.000 claims description 7
- 238000005187 foaming Methods 0.000 claims description 4
- 238000002407 reforming Methods 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000007634 remodeling Methods 0.000 claims 3
- 239000000463 material Substances 0.000 abstract description 4
- 238000004321 preservation Methods 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005034 decoration Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000009966 trimming Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/04—Frames for doors, windows, or the like to be fixed in openings
- E06B1/36—Frames uniquely adapted for windows
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/56—Fastening frames to the border of openings or to similar contiguous frames
- E06B1/58—Fastening frames to the border of openings or to similar contiguous frames by filling up the joints, e.g. by cementing
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/56—Fastening frames to the border of openings or to similar contiguous frames
- E06B1/60—Fastening frames to the border of openings or to similar contiguous frames by mechanical means, e.g. anchoring means
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Door And Window Frames Mounted To Openings (AREA)
Abstract
The invention relates to a construction process for reconstructing an old window, and relates to the technical field of reconstruction of doors and windows of buildings. A quick replacement for old district building exterior window is through do suitable trimming back cover with attaching the frame and installing new window again to the frame of old window under the prerequisite that the protection wall body is not destroyed to realize the transformation and the replacement of old window. The new window auxiliary frame is directly fixedly connected with the outer frame of the old window without removing the old window and door, and the outer frame of the old window and door is not removed and modified, so that the novel window auxiliary frame has the characteristics of material saving, labor saving and environmental protection; the construction can be completed without destroying the original wall structure, the original wall and the interior and exterior decoration are not destroyed, the noise caused during the construction is less, and people are not disturbed; construction and installation are convenient, and the construction period is short. And the use safety and the sealing performance of the new window installed by the construction process are ensured, the safety and the reliability are ensured, and the air tightness, the water tightness and the heat preservation performance are further ensured.
Description
Technical Field
The invention relates to a construction process for reconstructing an old window, and relates to the technical field of reconstruction of doors and windows of buildings.
Background
With the change of times and the continuous progress of science and technology, the living standard of people is greatly improved, and the requirements on life are higher and higher. After the urban construction in China goes through 30 years, the energy-saving design standards and requirements of buildings in the early stage cannot completely meet the progress steps of times, the energy-saving reconstruction of existing doors and windows of the same genus, which is easier to realize for the energy-saving reconstruction of the original buildings, becomes a current imperative task along with the continuous increase of social energy consumption.
The old window is reformed according to a conventional construction method, namely, a window outer frame is disassembled after cutting and chiseling a wall body attached to the original old window, and a new window is installed again after repairing the wall body.
Disclosure of Invention
The invention aims to provide a reconstruction construction process for an old window, which is used for quickly replacing an external window of a building in an old community.
In order to achieve the purpose, the invention provides the following technical scheme: a construction process for reforming an old window comprises the following steps of:
s1, construction preparation: selecting a new window product and a matched new window auxiliary frame according to the window type and the size of the old window;
s2, old style restitution: cutting an outer frame of an old window, wherein the distance between the outer frame and the inner cavity wall of the new window auxiliary frame is set to be 6-8 mm;
s3, cleaning the periphery hygienically: cleaning the surface of the outer frame and cleaning the periphery of the window hole;
s4, installing a new window auxiliary frame: the new window auxiliary frame comprises a transverse frame and a vertical frame, the vertical frame is installed, the vertical frame is sleeved on the outer frame, the transverse frame is installed after the vertical frames on two sides are installed, the new window auxiliary frame and the outer frame are fixed through first screws, foaming, filling and filling are injected after hole milling is conducted, a process hole cover is used for sealing the hole, a decorative cover plate is installed, and wall corner sealant is applied;
s5, implanting an expansion rubber tube: the expansion rubber pipe is implanted into the wall body;
s6, installing a new window product: the new window product is arranged close to the new window auxiliary frame;
s7, injecting glue on the whole window interface: and after the new window product is installed and fixed, sanitary cleaning is carried out, and the periphery of the new window is sealed.
Further, when the new window auxiliary frame is installed in step S4, a rubber pad needs to be added, the new window auxiliary frame is sleeved after the rubber pad is placed, and the new window auxiliary frame is tightly pressed so that the bottom of the new window auxiliary frame abuts against the old window.
Furthermore, a first screw groove is formed in the new window auxiliary frame, and the first screw penetrates through the first screw groove to fix the new window auxiliary frame and the outer frame.
Furthermore, the upper end and the lower end of the mullion are provided with milled openings, and the milled openings are matched and clamped with the outer frame.
Further, the gap between the milling notch and the outer frame is set to be 0.3 mm.
Further, in the step S6, the new window attachment frame and the new window product are fixed by a second screw, the second screw penetrates through the new window product and the new window attachment frame in sequence, and the second screw is screwed into the expansion rubber tube completely.
Furthermore, a second screw groove is formed in the new window product, and the second screw groove and the expansion rubber tube are located on the same axis.
Further, the gap between the vertical frame and the horizontal frame after the installation in the step S4 is 1-3 mm.
Furthermore, a heat insulation broken bridge is further arranged in the middle of the new window auxiliary frame.
Further, the thickness of the new window auxiliary frame section bar is 1.8 mm.
The invention has the beneficial effects that: the application provides a construction process is through doing suitable back cover of maintaining to the frame of old window under the prerequisite that protection wall body does not receive destruction in order to attach the new window of frame reinstallation to the old window transformation construction process for the quick replacement of old district building exterior window, the construction process that this application provided is to realize the transformation and the replacement of old window. The new window auxiliary frame is directly fixedly connected with the outer frame of the old window without removing the old window and door, and the outer frame of the old window and door is not removed and modified, so that the novel window auxiliary frame has the characteristics of material saving, labor saving and environmental protection; the construction can be completed without destroying the original wall structure, the original wall and the interior and exterior decoration are not destroyed, the noise caused during the construction is less, and people are not disturbed; construction and installation are convenient, and the construction period is short. And the new window attached frame and the new window product are matched products, and the new window attached frame and the new window product are tightly combined. And the use safety and the sealing performance of the new window installed by the construction process are ensured, the safety and the reliability are ensured, and the air tightness, the water tightness and the heat preservation performance are further ensured.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to make the technical solutions of the present invention practical in accordance with the contents of the specification, the following detailed description is given of preferred embodiments of the present invention with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a construction joint according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 simplicity of description, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.
The embodiment provides an old window transformation construction process for quickly replacing an outer window of an old community building. Comprises the following steps which are carried out in sequence:
(1) and construction preparation: selecting a new window product 4 and a matched new window auxiliary frame 3 according to the window type and the size of the old window;
(2) and old money restitution: cutting the outer frame 2 of the old window, wherein the distance between the outer frame 2 and the inner cavity wall of the new window auxiliary frame 3 is set to be 6-8 mm;
(3) and cleaning the periphery sanitation: cleaning the surface of the outer frame 2 and cleaning the periphery of the window hole;
(4) installing a new window auxiliary frame 3: the new window auxiliary frame 3 comprises a transverse frame and vertical frames, the vertical frames are installed, the vertical frames are sleeved on the outer frame 2, the transverse frames are installed after the vertical frames on two sides are installed, the new window auxiliary frame 3 and the outer frame 2 are fixed through first screws 7, foaming 5 is injected after hole milling is conducted to fill, a process hole cover is used for sealing holes, a decorative cover plate is installed, and wall corner sealant is applied;
(5) implanting an expansion rubber tube 5: the expansion rubber pipe 5 is implanted into the wall body 1;
(6) and installing a new window product 4: the new window product 4 is arranged close to the new window auxiliary frame 3;
(7) and injecting glue on the whole window interface: and after the new window product 4 is installed and fixed, sanitary cleaning is carried out, and the periphery of the new window is sealed.
In detail, in the field investigation in the step (1), a verified new window product 4 and a matched new window auxiliary frame 3 are selected according to the actual situation of the field. Observing the type of the old window and measuring the size, selecting a new window attached frame 3 and the type with proper size, wherein the new window attached frame 3 and the new window product 4 are special matched sectional bar structures, and the new window product 4 and the new window attached frame 3 are tightly combined. It should be noted that, in this embodiment, the type of the old window is not limited, and the old window may be a sliding window or a casement window, and may be selected according to actual situations. Referring to fig. 1, this embodiment is a schematic diagram of reconstruction construction of an old window of a sliding window, where the left side of a new window product 4 is indoor and the right side of the new window product 4 is outdoor.
In the step (2), in order to ensure the opening area of the window as much as possible, the outer frame 2 of the old window is partially cut if necessary according to the window type of the old window, and it should be noted that the uniformity of the size of the four-sided window frame needs to be considered during cutting, and the gap of 6-8mm needs to be kept between the height of the old frame and the inner cavity wall of the new window auxiliary frame 3, so that the new window product 4 is convenient to install more easily. And (3) cleaning the periphery sanitation, namely cutting the outer frame 2 of the old window, and then leaving a plurality of powder formed during cutting, so that dirt and dust on the surface of the old window and the periphery sanitation of the window opening are cleaned for the convenience of the next working procedure.
And (4) installing the new window auxiliary frame 3, wherein the new window auxiliary frame 3 comprises a transverse frame and a vertical frame, the upper end and the lower end of the vertical frame are provided with milled openings, and the milled openings are matched and clamped with the outer frame 2. In this embodiment, the process of sleeving the mullion with the horizontal mullion is adopted, the milling opening on the upper part and the lower part of the mullion is used for sleeving the outer frame 2 of the old window, and the gap between the milling opening and the outer frame 2 is set at 0.3 mm. The vertical frame is installed firstly, then the transverse frame is installed, and the gap between the vertical frame and the transverse frame after installation is 1-3 mm. It should be noted that the rubber pad is also needed to be added in the process of re-installing the auxiliary frame. After the rubber mat is placed, the new window auxiliary frame 3 is sleeved in, and the new window auxiliary frame 3 is tightly pressed to enable the bottom of the rubber mat to be tightly contacted with the wall. The new window attaches and is provided with first screw groove on the frame 3, and first screw 7 passes first screw groove fixed new window and attaches frame 3 and frame 2. The first screw grooves on the inner side and the outer side of the new window auxiliary frame 3 are screwed by stainless steel screws, so that the new window auxiliary frame and the old window outer frame 2 are reliably connected into a whole. And (3) injecting foaming 5 after drilling and milling the hole, filling and filling the empty middle space, sealing the hole by using a process hole cover, installing a decorative cover plate and drilling wall corner sealant. The use safety and the leakproofness of the new window auxiliary frame 3 and the old window outer frame 2 are ensured, the safety and the reliability are ensured, and the air tightness, the water tightness and the heat preservation are further ensured. The middle of the new window auxiliary frame 3 is also provided with a heat insulation broken bridge (not numbered), and the thickness of the section bar of the new window auxiliary frame 3 used in the embodiment is 1.8 mm. And 2.0mm can be set, and the thickened sectional material can improve the stability of the new window auxiliary frame 3.
And (5) implanting the expansion rubber tube 5 into the wall body 1, wherein the implantation of the expansion rubber tube 5 cannot interfere with the connecting screw of the new window auxiliary frame 3 and needs to be staggered. In the step (6), the new window product 4 is arranged close to the flange (positioning edge) of the new window auxiliary frame 3, and the optimal flange is close to the positioning edge, so that the air tightness can be improved. In this embodiment, the new window attachment frame 3 and the new window product 4 are fixed by second screws, the second screws sequentially penetrate through the new window product 4 and the new window attachment frame 3, and the second screws are completely screwed into the expansion rubber pipe 5. And a second screw groove is formed in the new window product 4, and the second screw groove and the expansion rubber tube 5 are positioned on the same axis. In another embodiment, the tooling holes for the set screws may be drilled after being positioned in the field. It should be noted that the stainless steel screw should be of sufficient length to be fully screwed into the expansion hose 5 for improved stability.
In conclusion, the construction process for reconstructing the old window is used for quickly replacing the outer window of the old residential district building, and the construction process provided by the application is used for reconstructing and replacing the old window by installing the auxiliary frame through the outer frame of the old window after properly trimming the outer frame of the old window on the premise that the wall body is not damaged. The new window auxiliary frame is directly fixedly connected with the outer frame of the old window without removing the old window and door, and the outer frame of the old window and door is not removed and modified, so that the novel window auxiliary frame has the characteristics of material saving, labor saving and environmental protection; the construction can be completed without destroying the original wall structure, the original wall and the interior and exterior decoration are not destroyed, the noise caused during the construction is less, and people are not disturbed; construction and installation are convenient, and the construction period is short. And the new window auxiliary frame and the new window product are matched products, and the new window auxiliary frame and the new window product are tightly combined. And the use safety and the sealing performance of the new window installed by the construction process are ensured, the safety and the reliability are ensured, and the air tightness, the water tightness and the heat preservation performance are further ensured.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent is subject to the appended claims.
Claims (10)
1. The old window reconstruction construction process is characterized by comprising the following steps of:
s1, construction preparation: selecting a new window product and a matched new window auxiliary frame according to the window type and the size of the old window;
s2, old style restitution: cutting an outer frame of an old window, wherein the distance between the outer frame and the inner cavity wall of the new window auxiliary frame is set to be 6-8 mm;
s3, cleaning the periphery hygienically: cleaning the surface of the outer frame and cleaning the periphery of the window hole;
s4, installing a new window auxiliary frame: the new window auxiliary frame comprises a transverse frame and a vertical frame, the vertical frame is installed, the vertical frame is sleeved on the outer frame, the transverse frame is installed after the vertical frames on two sides are installed, the new window auxiliary frame and the outer frame are fixed through first screws, foaming, filling and filling are injected after hole milling is conducted, a process hole cover is used for sealing the hole, a decorative cover plate is installed, and wall corner sealant is applied;
s5, implanting an expansion rubber tube: the expansion rubber pipe is implanted into the wall body;
s6, installing a new window product: the new window product is arranged close to the new window auxiliary frame;
s7, injecting glue on the whole window interface: and after the new window product is installed and fixed, sanitary cleaning is carried out, and the periphery of the new window is sealed.
2. The old window reforming construction process of claim 1, wherein a rubber mat is further added when the new window auxiliary frame is installed in the step S4, the new window auxiliary frame is sleeved after the rubber mat is placed, and the new window auxiliary frame is tightly pressed so that the bottom of the rubber mat is abutted to the old window.
3. The old window reforming construction process according to claim 1, wherein a first screw groove is formed in the new window auxiliary frame, and the first screw penetrates through the first screw groove to fix the new window auxiliary frame and the outer frame.
4. The old window reconstruction construction process according to claim 1, wherein the upper and lower ends of the mullion are provided with milled openings, and the milled openings are matched and clamped with the outer frame.
5. The old window remodeling construction process of claim 4, wherein a gap between the mill opening and the outer frame is set to 0.3 mm.
6. The old window reforming construction process according to claim 1, wherein in the step S6, the new window attachment frame and the new window product are fixed by a second screw, the second screw penetrates through the new window product and the new window attachment frame in sequence, and the second screw is completely screwed into the expansion rubber pipe.
7. The old window remodeling process of claim 6, wherein a second screw slot is provided in the new window product, the second screw slot being co-axial with the location of the expansion hose.
8. The old window remodeling process of claim 1, wherein the gap between the mullion and transom after installation in step S4 is 1-3 mm.
9. The old window reconstruction process as claimed in claim 1, wherein a thermal insulation bridge cut-off is further provided in the middle of the new window auxiliary frame.
10. The old window reconstruction process of claim 1, wherein the thickness of the new window attached frame profile is 1.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210808611.3A CN115012767A (en) | 2022-07-11 | 2022-07-11 | Old window reconstruction construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210808611.3A CN115012767A (en) | 2022-07-11 | 2022-07-11 | Old window reconstruction construction process |
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| Publication Number | Publication Date |
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| CN115012767A true CN115012767A (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210808611.3A Pending CN115012767A (en) | 2022-07-11 | 2022-07-11 | Old window reconstruction construction process |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206438927U (en) * | 2016-12-16 | 2017-08-25 | 熊佳明 | The window frame structure transformed available for old window |
| CN107100489A (en) * | 2017-06-23 | 2017-08-29 | 重庆亿金铝业有限公司 | A kind of window installation method |
| CN209398168U (en) * | 2018-08-30 | 2019-09-17 | 湖南美美幕墙装饰有限公司 | A kind of sash adapting to existing building aluminium alloy containing heat-insulating bridge-cut-off auxiliary frame |
| CN209539031U (en) * | 2018-09-27 | 2019-10-25 | 福建天闽绿色建筑产业有限公司 | A kind of door and window auxiliary frame structure for the old door and window facilitating transformation or displacement |
| CN111364877A (en) * | 2020-04-29 | 2020-07-03 | 河南科饶恩门窗有限公司 | Passive flat type pre-installation structure outside window for building and installation method |
| CN112482931A (en) * | 2020-12-17 | 2021-03-12 | 河南省第二建设集团有限公司 | Novel window frame and mounting method |
| CN215804046U (en) * | 2020-12-17 | 2022-02-11 | 河南省第二建设集团有限公司 | Novel window frame mounting structure |
-
2022
- 2022-07-11 CN CN202210808611.3A patent/CN115012767A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206438927U (en) * | 2016-12-16 | 2017-08-25 | 熊佳明 | The window frame structure transformed available for old window |
| CN107100489A (en) * | 2017-06-23 | 2017-08-29 | 重庆亿金铝业有限公司 | A kind of window installation method |
| CN209398168U (en) * | 2018-08-30 | 2019-09-17 | 湖南美美幕墙装饰有限公司 | A kind of sash adapting to existing building aluminium alloy containing heat-insulating bridge-cut-off auxiliary frame |
| CN209539031U (en) * | 2018-09-27 | 2019-10-25 | 福建天闽绿色建筑产业有限公司 | A kind of door and window auxiliary frame structure for the old door and window facilitating transformation or displacement |
| CN111364877A (en) * | 2020-04-29 | 2020-07-03 | 河南科饶恩门窗有限公司 | Passive flat type pre-installation structure outside window for building and installation method |
| CN112482931A (en) * | 2020-12-17 | 2021-03-12 | 河南省第二建设集团有限公司 | Novel window frame and mounting method |
| CN215804046U (en) * | 2020-12-17 | 2022-02-11 | 河南省第二建设集团有限公司 | Novel window frame mounting structure |
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Application publication date: 20220906 |