A casement window sash profile assembly without a joint

By combining the main frame profile, pressure line profile, and decorative cover profile of the window sash, and using the connection of nylon thermal insulation strips and sealing strips, the splicing problem of traditional outward-opening window sash profile components is solved, achieving a seamless welded appearance and good sealing performance, improving thermal insulation performance and aesthetics, and ensuring safety.

CN224396314UActive Publication Date: 2026-06-23HUNAN JINHUI ENERGY CONSERVATION DOOR & WINDOWS &CURTAIN WALL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUNAN JINHUI ENERGY CONSERVATION DOOR & WINDOWS &CURTAIN WALL
Filing Date
2025-07-30
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Traditional outward-opening window sash profiles have seams, resulting in poor sealing performance, which affects the building's energy efficiency and indoor environmental comfort. At the same time, the existing seamless welding design has poor thermal insulation performance and poses safety hazards.

Method used

The design combines the main frame profile, the pressure line profile, and the decorative cover profile of the window sash. By connecting the nylon thermal insulation strip, the sealing strip, and the movable corner bracket, a seamless appearance is achieved, and stability and safety are maintained during long-term use.

Benefits of technology

The outward-opening casement window sash components have achieved seamless welding, which enhances thermal insulation and sealing performance, improves aesthetics and safety, and meets the high standards required for modern buildings.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a kind of outer casement window sash sectional material assemblies without joint, it includes sash main frame section bar, line pressing section bar and decorative cover section bar;The sash inside main section bar is fixedly connected between sash outside main section bar through two nylon heat insulation strips, and nylon buckle is fixed in sash inside main section bar middle position by self-tapping screw;The assembly groove is reserved between the nylon heat insulation strip of corresponding sash glass installation side and sash inside main section bar in two nylon heat insulation strips;The decorative cover section bar has carding and has shielding side stop, and the shielding side stop is used to shield line pressing section bar side after being assembled in assembly groove in the side of sash glass installation side.The utility model combines sash main frame section bar, line pressing section bar and decorative cover section bar, to realize the smoothness of sash inner surface without joint, and simultaneously enhance the structural stability and sealing performance of sash.
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Description

Technical Field

[0001] This utility model relates to the technical field of aluminum alloy window sash profiles, specifically to a seamless outward-opening casement window sash profile assembly. Background Technology

[0002] With increasingly stringent energy efficiency and environmental standards in the building sector, the sealing requirements for exterior doors and windows are becoming more stringent. Traditional assembled window sash components, due to the presence of seams, often result in poor sealing performance, which in turn affects the building's energy efficiency and the comfort of the indoor environment.

[0003] To address this issue, some seamless welded window sash profile components have been introduced to the market. These components effectively reduce air and water penetration, significantly improve thermal and sound insulation performance, and thus reduce building energy consumption to meet the high standards of energy efficiency and environmental protection required by modern buildings.

[0004] In existing technologies, the structural design of alloy outward-opening window sashes typically takes the following two forms:

[0005] The first type is the traditional outward-opening casement window sash design, such as... Figure 1 As shown. This design uses laser welding to form the window sash frame at the four corners, followed by polishing and spraying before installing the trim and glass. However, a drawback of this structure is that gaps in the trim joints are still visible on the interior side (i.e.,...). Figure 1 Position A in the design makes it difficult to achieve a completely flat and seamless appearance, and also makes it impossible to present a two-tone appearance on the inside and outside of the window sash, thus affecting the overall aesthetics.

[0006] The second design option is to divide the window sash into two independent frames, inner and outer, such as... Figure 2 As shown, the two frames are connected to each other by nylon clips. This design allows for different surface treatments of the inner and outer frames, achieving a seamless appearance. However, the structure has relatively poor thermal insulation, and because it relies solely on nylon clips for fixation, it may loosen over time, undoubtedly increasing potential safety hazards.

[0007] In conclusion, it is necessary to provide a seamless outward-opening casement window sash profile assembly that can achieve a seamless appearance while also having good sealing and thermal insulation performance, in order to meet the high standards of aesthetics, energy efficiency and safety required by modern architecture. Utility Model Content

[0008] The technical problem solved by this utility model is to provide a seamless outward-opening casement window sash profile assembly, which can be used to solve the problems and defects in the above-mentioned technical background.

[0009] The technical problem solved by this utility model is achieved by the following technical solution:

[0010] A seamless outward-opening casement window sash profile assembly includes a main frame profile, a molding profile, and a decorative cover profile;

[0011] The main frame profile of the window sash includes an independently formed inner main profile and an outer main profile. The inner main profile and the outer main profile are fixedly connected by two nylon thermal insulation strips. The inner main profile is a plate structure with a self-tapping screw mounting position reserved in the middle. Nylon clips are fixed at intervals at the self-tapping screw mounting position of the inner main profile.

[0012] The nylon thermal insulation strip on the glass mounting side of the window sash and the main profile on the inner side of the window sash have a reserved mounting groove on the glass mounting side for assembling the pressure line profile.

[0013] The decorative cover profile has a snap-fit ​​portion on the inner side that matches the nylon buckle, and a shielding side block on the corresponding window sash glass mounting side. The shielding side block is used to shield the side of the pressure line profile on the side of the window sash glass mounting side after the pressure line profile is assembled into the mounting slot.

[0014] As a further limitation, the outer main profile of the window sash and the pressure line profile have glass mounting slots reserved on their opposite sides for mounting the window sash glass, and the outer main profile of the window sash and the pressure line profile have sealing strip mounting slots reserved on their opposite sides for mounting the sealing strips.

[0015] As a further limitation, the outer main profile of the window sash is provided with a closed cavity, which is a space for the assembly of movable corner brackets, providing necessary positioning and support for the splicing and assembly of movable corner brackets; after the movable corner brackets are assembled and temporarily fastened at the closed cavities at the four corners of the outer main profile of the window sash, the splicing seams are formed by laser welding to form a complete outdoor viewing side profile frame.

[0016] The movable corner bracket is preferably a glue-injected bolt fastening type movable corner bracket.

[0017] As a further limitation, the decorative cover profile has a pre-formed closed cavity, which is a space for assembling movable corner brackets to provide necessary positioning and support for the splicing and assembly of movable corner brackets; after the movable corner brackets are assembled and temporarily fastened at the closed cavity positions at the four corners of the decorative cover profile, the joints are then welded by laser to form a complete interior viewing side profile frame.

[0018] As a further limitation, the outer main profile of the window sash is provided with a hardware groove and a window frame edge strip on the corresponding window frame side, and a sealing strip assembly groove is formed on the outer edge of the window frame edge strip.

[0019] As a further limitation, the nylon thermal insulation strip corresponding to the window sash glass mounting side of the two nylon thermal insulation strips has a T-shaped cross section, and the side support of the T-shaped cross section extends towards the window sash glass mounting side; the pressure line profile has a U-shaped cross section; the inner main profile of the window sash and the protruding side of the T-shaped cross section are formed on opposite surfaces with pressure line profile assembly grooves that match the opening side of the U-shaped cross section of the pressure line profile, so that the pressure line profile can be stably fixed between the inner main profile of the window sash and the nylon thermal insulation strip after assembly;

[0020] The nylon thermal break strip is connected and fixed to the main profile on the inner side of the window sash via a hook and fastener structure on the opposite side of the mounting groove of the pressure line profile. This enhances the assembly stability of the pressure line profile and ensures the overall sealing performance of the window sash.

[0021] As a further limitation, the outer main profile of the window sash and the decorative cover profile have independent finishing layers formed on their outer surfaces; the finishing layer is a paint layer, a wood grain layer or a film layer, to meet the personalized decoration needs of different users, while improving the overall aesthetics of the window sash.

[0022] Beneficial Effects: This utility model provides a seamless outward-opening casement window sash profile assembly that achieves the seamless welding requirements of outward-opening window sashes. The cooperation between the main frame profile and the decorative cover profile of the window sash achieves a separation of functionality and aesthetics. It not only ensures a seamless appearance on both the inner and outer sides of the window sash but also significantly enhances the heat insulation, sealing, and safety performance of the window sash through the effective application of nylon thermal insulation strips and sealing strips. Furthermore, it allows for different surface treatments on the outer and inner sides of the molded window sash, thereby meeting users' personalized needs for two-tone or different decorative effects on the inner and outer sides of the window sash. Attached Figure Description

[0023] Figure 1 This is a structural diagram of a seamless welded window sash structure in the prior art.

[0024] Figure 2 This is a structural schematic diagram of the second seamless welded window sash structure in the prior art.

[0025] Figure 3 This is a schematic diagram of a preferred embodiment of the present invention.

[0026] The components include: 1. External sealing strip; 2. Main profile of the outer side of the window sash; 3. Enclosed cavity; 4. Hardware groove; 5. Window frame edge strip; 6. Window frame edge sealing strip; 7. First nylon thermal insulation strip; 8. Sealing strip of decorative cover profile; 9. Main profile of the inner side of the window sash; 10. Self-tapping screw; 11. Nylon clip; 12. Second nylon thermal insulation strip; 13. Decorative cover profile; 14. Pressure line profile; 15. Internal sealing strip of the glass; 16. Window sash glass. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0028] See Figure 3 A preferred embodiment of a seamless outward-opening casement window sash profile assembly is provided. In this embodiment, the outward-opening casement window sash profile assembly includes a main frame profile, a ferrule profile 14, and a decorative cover profile 13. The main frame profile, ferrule profile 14, and decorative cover profile 13 are preferably made of high-quality aluminum alloy to ensure the strength, stability, and corrosion resistance of the entire window sash profile assembly.

[0029] The main frame profile of the window sash consists of an independently formed inner main profile 9 and an outer main profile 2. Figure 3 In the assembled state shown, the right side of the inner main profile 9 of the window sash corresponds to the indoor side, while the left side of the outer main profile 2 of the window sash corresponds to the outdoor side. Matching nylon thermal insulation strip slots are formed on the opposing surfaces of the inner main profile 9 and the outer main profile 2 of the window sash. There are two sets of these slots, used for assembling the first nylon thermal insulation strip 7 and the second nylon thermal insulation strip 12, respectively. Both the first nylon thermal insulation strip 7 and the second nylon thermal insulation strip 12 are made of high-strength, low-thermal-conductivity nylon material. They are assembled between the inner main profile 9 and the outer main profile 2 of the window sash using a strip-rolling process. This allows the inner main profile 9 and the outer main profile 2 to form a structural whole, and also creates an effective thermal insulation barrier to reduce the heat conduction performance of the window sash and improve the building's energy efficiency.

[0030] In this embodiment, the outer main profile 2 of the window sash has not undergone structural modifications, and its structure is the same as that of the main profile 2 of the window sash. Figure 1 , Figure 2 The existing window sashes shown in the prior art have the same outer main profile, all of which include a window sash glass edge strip, a closed cavity 3, a hardware groove 4, and a window frame edge strip 5. The closed cavity 3 is located in the middle of the profile, providing the necessary space for the assembly of the movable corner bracket. In order to ensure the structural strength after assembly, the movable corner bracket used in the closed cavity 3 should preferably be a glue-injected bolt fastening type movable corner bracket.

[0031] After the outer main profile 2 of the window sash is assembled into a rectangular frame at the corner of the closed cavity 3 by using corner brackets, the seams are then welded by laser welding and the welded surface is ground smooth to form the outer frame of the main profile of the window sash in the form of a frame.

[0032] Ensure a secure connection at the corners of the window sash. The hardware groove 4 is a standard C-shaped groove located on the side wall of the window frame within the enclosed cavity 3, compatible with European standard hardware accessories from various manufacturers. The window sash glass edge strip and the window frame edge strip 5 are respectively formed on both sides of the enclosed cavity 3. The window sash glass edge strip cooperates with the pressure line profile 14 to complete the fixed assembly of the window sash glass; the window frame edge strip 5, in conjunction with the window frame edge sealing strip 6, provides a seal when the window sash is closed, preventing the penetration of air and water.

[0033] The inner main profile 9 of the window sash is a sheet structure with a self-tapping screw mounting position carefully reserved in the middle, which facilitates the subsequent secure installation of nylon clips 11 by self-tapping screws 10. These nylon clips 11 play a connecting and fixing role on the inner main profile 9 of the window sash, and are used for the detachable assembly of the decorative cover profile 13.

[0034] Specifically, the nylon buckle 11 is designed as a rotatable rectangular block structure with slots on both sides at the middle of its long side. The inner side of the decorative cover profile 13 is equipped with a snap-fit ​​part that matches the slot. Through the precise snap-fit ​​of the snap-fit ​​part and the slot, the decorative cover profile 13 can be positioned as follows: Figure 3 As shown, it is securely mounted on the main profile 9 on the inner side of the window sash, while facilitating subsequent disassembly and maintenance. Furthermore, the design of the nylon clips 11 fully considers ease of assembly; a simple rotation is all that is needed to lock and unlock the clips, significantly improving assembly efficiency. The nylon clips 11 are fixed at intervals to the self-tapping screw mounting positions on the main profile 9 on the inner side of the window sash using self-tapping screws 10. This design not only ensures a firm connection but also provides convenient fixing points for subsequent assembly steps. Additionally, the nylon clips 11 can be quickly disassembled, replaced, and repositioned when needed.

[0035] On the glass mounting side of the window sash, the first nylon thermal insulation strip 7 has a T-shaped cross-section. The side support of this T-shaped cross-section extends towards the glass mounting side, and a T-shaped hook is formed at the top of the side support. The upper part of the main profile 9 on the inner side of the window sash is designed as a raised structure with a folded edge. This raised structure with a folded edge is positioned opposite the T-shaped hook of the side support of the first nylon thermal insulation strip 7, forming a complete C-shaped groove. The pressure line profile 14 has a U-shaped cross-section, and the outer edges of the two sides corresponding to the opening of the U-shaped cross-section of the pressure line profile 14 are also designed with hook structures that match the C-shaped groove. This tight fit between the hook structure and the C-shaped groove not only effectively prevents the pressure line profile 14 from loosening after assembly but also ensures the overall sealing performance of the window sash, preventing air and water penetration.

[0036] In this embodiment, a glass mounting groove for assembling the window sash glass 16 is pre-reserved between the window sash glass edge strip of the outer main profile 2 and the pressure line profile 6. On the opposite surfaces of the glass mounting groove, both the outer main profile 2 and the pressure line profile 14 have formed sealing strip mounting grooves for assembling sealing strips. The outer sealing strip 1 and the inner sealing strip 15 are respectively mounted in the sealing strip mounting positions on the outer main profile 2 of the window sash between the inner side of the window sash glass edge strip and the pressure line profile 14, and are sealed using the outer sealing strip 1 and the inner sealing strip 5. This provides an additional sealing barrier after the window sash glass 16 is installed, further enhancing the sealing performance of the window sash, effectively preventing the penetration of air, moisture, and noise, and providing users with a more comfortable and quiet indoor environment.

[0037] In this embodiment, during the interior assembly of the window sash profile, the inner main profile 9 and the outer main profile 2 of the window sash are first fixedly connected using the first nylon thermal insulation strip 7 and the second nylon thermal insulation strip 12. After assembly, the pressure molding profile 14 is pressed and fixed on the side of the inner main profile 9 corresponding to the window sash glass 16. Then, using self-tapping screws 10, the nylon clip 11 is installed on the back side of the inner main profile 9, avoiding the middle position of the first nylon thermal insulation strip 7 and the second nylon thermal insulation strip 12. The outer assembly of the decorative cover profile 13 is then completed using the nylon clip 11. Finally, the clip channel between the inner main profile 9 and the decorative cover profile 13 is sealed using the decorative cover profile sealing strip 8 (e.g., ...). Figure 3 (as shown in the diagram), that is, the overall assembly is completed, resulting in the following: Figure 3 The assembly structure shown.

[0038] The assembly process of the outward-opening window sash profile components eliminates the need for complex welding, greatly simplifying the production process and reducing costs. Furthermore, the use of snap-fit ​​fasteners between components ensures the window sash maintains excellent stability and safety during long-term use, effectively preventing safety hazards caused by loose parts.

[0039] In this embodiment, the main profile 2 on the outer side of the window sash, the main profile 9 on the inner side of the window sash, the second nylon thermal insulation strip 12, and the first nylon thermal insulation strip 7 are combined to form a main frame of the window sash after welding and powder coating. This frame is used to install hardware and glass and has complete functionality, serving as the main load-bearing component. The decorative cover profile 13, as the interior decorative structure, can cover the structural seam between the pressure line profile 14 and the outer surface of the main profile 9 on the inner side of the window sash by covering them, thus achieving a seamless appearance between the inner and outer sides of the window sash and improving the overall aesthetics of the window sash. Furthermore, the decorative cover profile 13 is surface-treated independently of the main frame profile of the window sash, which can meet the user's personalized needs for two-tone or different decorative effects on the inner and outer sides of the window sash.

[0040] In addition, the decorative cover profile 13 has a side shield reserved on the side of the corresponding pressure line profile 14. After the pressure line profile 14 is assembled, the side shield can effectively cover the side of the pressure line profile 14, further enhancing the overall aesthetics of the window sash and the exquisite details.

[0041] The decorative cover profile 13 also has a closed cavity, which is similar to the closed cavity 3 in the outer main profile 2 of the window sash, providing the necessary conditions for the precise positioning and stable support of the movable corner brackets. At the four corners of the window sash, the decorative cover profile 13 is assembled and temporarily secured by movable corner brackets, and then the seams are joined by laser welding technology, the welded surface is ground, and powder coating is applied to complete the interior surface treatment, forming the inner frame of the main window sash profile opposite to the outer frame structure of the main window sash profile.

[0042] Because the inner frame of the main window sash profile is independently molded, the decorative cover profile 13 can be surface-treated separately and can be formed with an independent finishing layer. The corresponding finishing layer can be a paint layer, a wood grain layer, or a film layer, allowing users to choose according to their personal preferences and interior decoration style to achieve harmony between the window sash and the interior environment. This design not only enriches the decorative effect of the window sash but also enhances the overall aesthetics and living comfort of the home. Furthermore, the separate design of the decorative cover profile and the main window sash frame profile ensures that their surface treatments do not affect each other, thus meeting users' personalized needs for two-tone or different decorative effects on the inside and outside of the window sash, further enhancing the product's market competitiveness.

[0043] The combination of the decorative cover profile 13 with the inner main profile 9 and the pressure line profile 14 of the window sash not only achieves a stable structural connection, but also achieves a perfect separation of functionality and decoration, so that the window sash can meet the functional requirements while also satisfying the user's pursuit of aesthetics.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical content of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A seamless outward-opening casement window sash profile assembly, characterized in that, This includes the main frame profile of the window sash, the molding profile, and the decorative cover profile; The main frame profile of the window sash includes an independently formed inner main profile and an outer main profile. The inner main profile and the outer main profile are fixedly connected by two nylon thermal insulation strips. The inner main profile is a plate structure with a self-tapping screw mounting position reserved in the middle. Nylon clips are fixed at intervals at the self-tapping screw mounting position of the inner main profile. The nylon thermal insulation strip on the glass mounting side of the window sash and the main profile on the inner side of the window sash have a reserved mounting groove on the glass mounting side for assembling the pressure line profile. The decorative cover profile has a snap-fit ​​portion on the inner side that matches the nylon buckle, and a shielding side block on the corresponding window sash glass mounting side. The shielding side block is used to shield the side of the pressure line profile on the side of the window sash glass mounting side after the pressure line profile is assembled into the mounting slot.

2. The seamless outward-opening casement window sash profile assembly according to claim 1, characterized in that, The outer main profile of the window sash and the pressure line profile have glass mounting slots reserved on their opposite sides for mounting the window sash glass, and the outer main profile of the window sash and the pressure line profile have sealing strip mounting slots reserved on their opposite sides for mounting the sealing strips.

3. The seamless outward-opening casement window sash profile assembly according to claim 1, characterized in that, The outer main profile of the window sash has a closed cavity, which is a space for the assembly of movable corner brackets. After the movable corner brackets are assembled and temporarily fastened at the four corners of the closed cavity of the outer main profile of the window sash, the joints are welded by laser to form a complete outdoor viewing side profile frame.

4. The seamless outward-opening casement window sash profile assembly according to claim 3, characterized in that, The movable angle bracket is a glue-injected bolt-fastened type movable angle bracket.

5. The seamless outward-opening casement window sash profile assembly according to claim 1, characterized in that, The decorative cover profile has a pre-formed closed cavity, which is a space for the assembly of movable corner brackets. After the corner brackets are assembled and temporarily fastened at the four corners of the closed cavity, the decorative cover profile is then joined by laser welding to form a complete interior viewing side profile frame.

6. The seamless outward-opening casement window sash profile assembly according to claim 1, characterized in that, The outer main profile of the window sash is provided with a hardware groove and a window frame edge strip on the corresponding window frame side, and a sealing strip assembly groove is formed on the outer edge of the window frame edge strip.

7. The seamless outward-opening casement window sash profile assembly according to claim 1, characterized in that, The nylon thermal insulation strip on the side of the window sash glass installation has a T-shaped cross section, and the side support of the T-shaped cross section extends toward the side of the window sash glass installation; the pressure line profile has a U-shaped cross section; the inner main profile of the window sash and the protruding side of the T-shaped cross section are formed on opposite surfaces with a pressure line profile assembly groove that matches the opening side of the U-shaped cross section of the pressure line profile.

8. The seamless outward-opening casement window sash profile assembly according to claim 6, characterized in that, The nylon thermal break strip is connected and fixed to the main profile on the inner side of the window sash via a hook and fastener structure on the opposite side of the mounting groove of the pressure line profile. This enhances the assembly stability of the pressure line profile and ensures the overall sealing performance of the window sash.

9. The seamless outward-opening casement window sash profile assembly according to claim 1, characterized in that, The outer main profile of the window sash and the decorative cover profile have independent finishing layers formed on their outer surfaces; the finishing layer is a paint layer, a wood grain layer or a film layer.