Formwork-free heat insulation door and window frame
By designing formwork-free insulated doors and windows, the problem of thermal insulation and sealing defects in door and window installation is solved, achieving efficient and low-cost construction results, and improving the thermal insulation performance and construction quality of doors and windows.
Patent Information
- Application Number
- CN202520172102.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-25
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-25
AI Technical Summary
Existing door and window installations require pre-set formwork, which leads to defects in insulation and sealing, increases construction costs and quality risks, and results in long construction cycles, making it difficult to improve production efficiency.
The design of insulated doors and windows without formwork is adopted. It consists of an outer door and window frame and an inner door and window frame connected by thermal insulation strips. The protective panel is cast integrally with the wall. Combined with the sealing part and support frame, the construction process is simplified and the connection gaps and heat conduction are reduced.
It improves the thermal insulation performance of doors and windows, reduces heat loss, simplifies the construction process, reduces project costs and quality risks, and improves construction efficiency.
Smart Images
Figure CN223867870U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door and window construction, specifically a formwork-free insulated door and window frame. Background Technology
[0002] Doors and windows, as vital connections between the interior and exterior of a building, serve the basic functions of ventilation and lighting. Beyond this, their sealing and insulation properties are a key indicator of living comfort, directly impacting residents' daily experience and significantly affecting energy efficiency and environmental friendliness. Because window and door frames are often made of metal, heat can be conducted through the metal frames even when the spaces on either side are not in direct contact. This leads to significant fluctuations in indoor temperature due to outdoor temperature variations, greatly increasing energy consumption for cooling or heating.
[0003] Furthermore, when installing doors and windows on concrete walls or precast building wall panels, the process typically involves setting up side formwork for the door and window openings during the concrete wall pouring process. After the concrete wall is completed, the side formwork is removed to create the openings for the doors and windows. The door and window frames are then fixed inside the openings, and the gaps between the openings and the frames are filled with cement mortar. The openings are then plastered and finished with cement mortar, and decorative moldings such as door and window frames are installed. Finally, painting completes the entire process. However, the protective panels and door and window frames need to be installed in stages, requiring a longer construction period. Numerous uncertainties exist during construction, and the quality is directly affected by the workers' skills, making it difficult to improve efficiency and significantly increasing project costs. Any substandard execution of any construction step can lead to subsequent problems such as rainwater leakage and insufficient sealing and insulation at the doors and windows. Utility Model Content
[0004] This utility model provides a formwork-free insulated door and window frame to solve the problem mentioned in the background that door and window installation requires pre-set formwork, which easily leads to defects in thermal insulation and sealing, resulting in high construction costs and poor quality.
[0005] A formwork-free insulated door and window frame includes a door / window frame, a protective panel, and a sealing part.
[0006] The door and window frame consists of an outer door and window frame with a hollow interior and an inner door and window frame connected by a thermal insulation strip.
[0007] The protective panel includes an outer protective panel and an inner protective panel. The outer protective panel is installed at the base of the outer door and window frame and extends horizontally towards the outer wall surface; the inner protective panel is installed at the base of the inner door and window frame and extends horizontally towards the inner wall surface.
[0008] The sealing part is located at the junction of the protective plate and the wall.
[0009] The door and window frames, protective panels, and their sealing parts are integrally cast and fixed to the wall.
[0010] As a further improvement of this utility model, at least one end of the outer protective plate and the inner protective plate extending to both sides is provided with a vertically folded edge. The door and window frames, the protective plates, and the folded edges together form a semi-enclosed structure for connection with the wall casting.
[0011] As a further improvement of this utility model, corresponding inlay grooves are made on the side walls opposite to the outer and inner door and window frames, and the two ends of the thermal insulation strip are respectively inlaid in the inlay grooves on both sides.
[0012] As a further improvement of this utility model, it also includes a support frame, several support frames are arranged below the door and window frame and are connected and fixed to the protective plate and the folded edge.
[0013] As a further improvement of this utility model, the sealing structure is a sealing groove formed by the recess of the folded edge on the side attached to the wall, and a sealing strip is embedded in the sealing groove. The sealing strip is in contact with and sealed to the cast wall side template; or an elastic sealing strip is attached to the outer wall of the folded edge, and the elastic sealing strip is in contact with and sealed to the wall side template; or both the outer wall of the folded edge and the cast wall side template have flat surfaces, and the two flat surfaces are directly in contact for sealing; in addition, when there is no folded edge structure on both sides of the protective plate, a rubber strip is provided at the end where the protective plate meets the wall, and the rubber strip is in contact with and sealed to the wall side template.
[0014] As a further improvement of this utility model, an eave is provided at the recessed opening of the sealing groove, and the eave abuts and fixes against the sealing strip inside the sealing groove.
[0015] As a further improvement of this utility model, at least one of the outer ends of the folded edge is provided with a locking edge portion that is embedded in the wall.
[0016] As a further improvement of this utility model, the locking edge structure is provided with a flange embedded in the wall at the outer end of the folded edge; or a thickened protruding structure embedded in the wall is provided at the outer end of the folded edge.
[0017] As a further improvement of this utility model, the edge of the flange has an inclined protrusion on the sealing groove side, forming an acute-angle hook-shaped structure.
[0018] As a further improvement of this utility model, the outer and inner door and window frames are provided with a connecting part that extends into the wall on the side where they are connected to the wall. The connecting part is a hook-shaped reinforcing rib, and a reinforcing rib is provided on the side where the outer and inner door and window frames are connected to the wall.
[0019] Compared with the prior art, the advantages of this utility model are as follows:
[0020] 1. The door and window frame consists of two parts that are not directly connected. The interior has an insulated cavity and the two parts are indirectly connected by a low thermal conductivity insulation strip. This gives the door and window frame good low thermal conductivity characteristics, which can significantly reduce the heat transfer between the indoor space and the outdoor environment through the door and window frame and ensure the stability of the indoor temperature.
[0021] Second, the protective panel is integrally formed with the door and window frame, and the inner and outer frame sleeves are fixed by the support frame, which saves the time and process required for step installation. In addition, there is no connection gap between the door and window frame and the protective panel, which further reduces the waterproofing process.
[0022] Third, the doors and windows, along with their support frames, are cast and installed as a single unit with the wall, simplifying the construction process. Sealing grooves and flanges are also provided on the folded edges to ensure a stable connection with the wall.
[0023] Fourth, the recessed opening of the sealing groove on the folded edge is made into an eave, forming a drip edge for drainage. When the rainwater flowing along the wall reaches the eave, it will form a rain curtain waterfall, increasing the speed and smoothness of drainage. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0025] Figure 2 This is a schematic diagram of the connection structure of this utility model;
[0026] Figure 3 This is a schematic diagram of the installation of the thermal insulation strip of this utility model;
[0027] Figure 4 This is an enlarged schematic diagram of the eaves structure on the sealing groove of this utility model;
[0028] Figure 5 This is a schematic diagram showing the positional structure of the embedded groove group, flange, and reinforcing rib of this utility model.
[0029] Figure 6 This is a schematic diagram of the door and window frames and protective panels of this utility model after being cast and installed in the wall.
[0030] Figure 7 This is a schematic diagram of the sealing part of the protective plate of this utility model when there are no folded edges;
[0031] Figure 8 This utility model Figure 7 Enlarged schematic diagram of the rubber strip installed on the structure at point a (selected in the middle box);
[0032] 1. Door and window frames; 2. Protective panels; 3. Thermal insulation strips; 4. Support frames; 11. External door and window frames; 12. Internal door and window frames; 13. Reinforcing ribs; 14. Embedded grooves; 21. External protective panels; 22. Internal protective panels; 23. Folded edges; 24. Sealing grooves; 25. Rubber strips; 231. Flanged edges; 241. Eaves. Detailed Implementation
[0033] In the description of this application, it should be noted that the terms "above", "middle", "inner side", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific drawings provided. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0034] Please see the appendix Figure 1 - Appendix Figure 5 Specific Implementation Example 1:
[0036] A formwork-free insulated door and window frame, characterized in that it includes a door and window frame 1, a protective plate 2, a thermal insulation strip 3, and a support frame 4.
[0037] The door and window frame 1 is divided into an outer door and window frame 11 and an inner door and window frame 12, both of which are made of hollow aluminum alloy profiles. The window frame is embedded within the frame of the door and window frame 1. The outer door and window frame 11 and the inner door and window frame 12 are arranged adjacent to each other at intervals, such as... Figure 5 As shown, each of the two has two opposing sets of embedding grooves 14 on its adjacent sidewalls. The cross-sectional width of the embedding grooves 14 gradually narrows from the end near the sidewall to the end near the opening, forming a conical shape.
[0038] Two thermal insulation strips 3 made of low thermal conductivity material are set at the adjacent intervals of the outer door and window frame 11 and the inner door and window frame 12. The two ends of the thermal insulation strip 3 are thicker than the middle part, and the two ends are respectively embedded in the corresponding embedding grooves 14 on both sides. After the two thermal insulation strips 3 are embedded, the outer door and window frame 11 and the inner door and window frame 12 are indirectly connected into one unit.
[0039] At the bottom of the outer door / window frame 11, a horizontal plane extends outward from the side facing away from the inner door / window frame 12, forming an outer protective panel 21 structure. The outer end of the outer protective panel 21 has a vertical flange 23, which extends downward and forms a flange 231 at its bottom end. The end of the flange 231 has an inclined protrusion on the upper side of the outer door / window frame 11, forming an acute-angle hook-like edge. Figure 3 and Figure 5As shown, the flange 23 is recessed towards the outer door / window frame 11 at the middle position, and has a rectangular cross-section sealing groove 24. Similarly, an inner protective plate 22 is also made on the inner door / window frame 12, and the outer end of the inner protective plate 22 has a flange 23 with the same structure. The inner protective plate 22 and the outer protective plate 21 together form the protective plate 2.
[0040] Several support frames 4 are evenly spaced within a semi-enclosed structure formed by the door and window frames 1, the protective plate 2, and the folded edges 23. The top of the support frame 4 is fixedly connected to the bottom of the outer door and window frame 11 and the inner door and window frame 12 by screws or welding. The left and right sides of the support frame 4 are fixedly connected to the inner sides of the two folded edges 23, respectively, providing fixed support for the door and window frames 1 and the protective plate 2 as a whole.
[0041] like Figure 5 As shown, the bottom of the outer door and window frame 11 and the inner door and window frame 12 protrudes downwards, and each has two reinforcing ribs 13 with hook-shaped tips. The lower sides of the door and window frame 1 and the protective plate 2 are integrally cast and connected to the wall. The support frame 4 is integrally cast into the wall. The reinforcing ribs 13, the sealing groove 24 and the flange 231 are all embedded in the wall and firmly connected to the wall. The flanges 23 on both sides of the protective plate 2 are fitted and covered to the wall surface.
[0042] During the pouring and installation, a sealing strip is embedded in the sealing groove 24. The sealing strip fits and seals against the wall side formwork to prevent concrete from leaking to the side of the door and window frame 11.
[0043] Specific Implementation Example 2: Based on Specific Implementation Example 1, such as Figure 4 As shown, the upper and lower ends of the recessed opening of the sealing groove 24 are vertically extended with eaves 241. The eaves 241 are vertically aligned and flush with the plane of the folded edge 23, and are fixed in contact with the sealing strip embedded in the sealing groove 24. When rainwater flows along the wall surface to the eaves, it forms a rain curtain waterfall, increasing the speed and smoothness of drainage. The sealing groove 24 located on the outer wall surface has a drainage hole at the lower eaves 241 leading to the bottom of the sealing groove 24 to drain the water accumulated in the sealing groove 24.
[0044] Specific Implementation Example 3: Based on Specific Implementation Example 1, such as Figure 5 As shown, the edge of the flange 231 has an inclined protrusion on the sealing groove 24 side, forming an acute-angle hook-shaped structure to achieve a more secure connection with the wall.
[0045] Specific Implementation Example 4: Based on Specific Implementation Example 1, as follows Figures 7-8 As shown, when there is no folded edge 23 structure on both sides of the protective plate 2, a rubber strip 25 is provided at the end where the protective plate 23 is connected to the wall. The rubber strip 25 is directly attached to the wall side formwork and sealed during the wall pouring to prevent concrete from leaking to the side of the door and window frame 11.
[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of the invention. All variations, modifications and substitutions within the spirit and principle of the present invention are within the protection scope of the present utility model.
Claims
1. A formwork-free insulated door and window frame, characterized in that: Includes door and window frames (1), protective panels (2), and sealing parts; The door and window frame (1) is composed of an outer door and window frame (11) with a hollow interior and an inner door and window frame (12) connected by a thermal insulation strip (3); The protective panel (2) includes an outer protective panel (21) and an inner protective panel (22); the outer protective panel (21) is located at the base of the outer door and window frame (11) and extends horizontally to the outer wall surface; the inner protective panel (22) is located at the base of the inner door and window frame (12) and extends horizontally to the inner wall surface. The sealing part is located at the junction of the protective plate (2) and the wall; The door and window frames (1), the protective plate (2) and its sealing parts are integrally cast and fixed to the wall.
2. The formwork-free insulated door and window frame according to claim 1, characterized in that: The outer protective plate (21) and the inner protective plate (22) extend to both sides respectively, and at least one end is provided with a vertically folded edge (23); the door and window frame (1), the protective plate (2) and the folded edge (23) together form a semi-enclosed structure for connection with the wall.
3. The formwork-free insulated door and window frame according to claim 1, characterized in that: The outer door and window frame (11) and the inner door and window frame (12) have corresponding mounting grooves (14) on their opposite side walls, and the two ends of the thermal insulation strip (3) are respectively mounted in the mounting grooves (14) on both sides.
4. A formwork-free insulated door and window frame according to claim 2, characterized in that: It also includes support frames (4), several support frames (4) are set below the door and window frame (1) and are connected and fixed to the protective plate (2) and the folded edge (23).
5. A formwork-free insulated door and window frame according to claim 2, characterized in that: The sealing structure is a sealing groove (24) formed by the recess of the folded edge (23) on the side attached to the wall. A sealing strip is installed in the sealing groove (24) and the sealing strip is in contact with the cast wall side template for sealing. Alternatively, an elastic sealing strip is attached to the outer wall of the folded edge (23) and the elastic sealing strip is in contact with the wall side template for sealing. Alternatively, the outer wall of the folded edge (23) and the wall side template cast in the wall are both made with flat surfaces and the flat surfaces of the two are directly in contact for sealing. In addition, when there is no folded edge (23) structure on both sides of the protective plate (2), a rubber strip (25) is provided at the end where the protective plate (2) is joined to the wall surface and wraps the end. The rubber strip (25) is in contact with the wall side template for sealing.
6. A formwork-free insulated door and window frame according to claim 5, characterized in that: An eave (241) extends from the recess of the sealing groove (24), and the eave (241) abuts and is fixed to the sealing strip inside the sealing groove (24).
7. A formwork-free insulated door and window frame according to claim 1, characterized in that: At least one folded edge (23) has a locking edge embedded in the wall at its outer end.
8. A formwork-free insulated door and window frame according to claim 7, characterized in that: The locking edge structure is provided with a flange (231) embedded in the wall at the outer end of the folded edge (23); or a thickened protruding structure embedded in the wall is provided at the outer end of the folded edge (23).
9. A formwork-free insulated door and window frame according to claim 8, characterized in that: The edge of the flange (231) has an inclined protrusion on the side of the sealing groove (24), forming an acute-angle hook-shaped structure.
10. A formwork-free insulated door and window frame according to claim 1, characterized in that: The outer door and window frame (11) and the inner door and window frame (12) are connected to the wall by a connecting part that extends into the wall; the connecting part is a hook-shaped reinforcing rib (13), and the outer door and window frame (11) and the inner door and window frame (12) are both connected to the wall by a reinforcing rib (13).