A seamless welded casement window

Abstract

The utility model relates to building door and window technical field, and disclose a kind of seamless welding casement window, including frame material, glass, middle column, vice frame, fan material etc., middle column is spliced with frame material and is fixed by seamless welding, the width of both is uniform and the welding position is polished flush, glass is divided into two parts for frame body and fan body, respectively by detachable frame pressing line, fan pressing line fixed, connecting part is coated with glass glue and the gap is pasted with rubber strip, vice frame is the integrated structure of sash and screen fan, set fan material and screen fan and are sealed by sealing rubber strip, fan material is provided with standardization hardware fittings notch, screen fan inside is equipped with grid anti-theft grid and screen, frame material outside is surrounded by anti-theft frame, glass glue is applied to multiple gaps, realize overall sealing waterproof, the casement window improves hardware adaptability and assembly aesthetic degree, enhances sealing, anti-theft performance, prolongs service life, applicable to residential, commercial building etc. Scene.

Description

Technical Field

[0001] This utility model relates to the field of building door and window technology, specifically a seamless welded casement window. Background Technology

[0002] Casement windows are a widely used type of window in the field of building doors and windows. Their core feature is that the window sash can be opened and closed horizontally by connecting to the window frame through hinges. With advantages such as large opening area, good ventilation, and strong sealing, they are widely used in residential and commercial buildings. Seamless welded casement windows are an upgraded product based on traditional casement windows. They use seamless welding technology to treat key connection parts such as window frame and window sash. The welding process can eliminate corner gaps and reduce the risk of rainwater infiltration and air leakage.

[0003] Traditional casement windows still suffer from numerous technical defects in practical applications, significantly impacting user experience and installation compatibility. The installation slots for hardware fittings in traditional casement windows lack standardized specifications; different manufacturers often use custom slots for different window types, resulting in incompatible hardware. This not only increases manufacturers' inventory costs (requiring stocking various hardware for different slots) but also creates inconvenience for later maintenance. Users needing to replace hardware must precisely match the original slot specifications, limiting selection and increasing maintenance costs. Furthermore, some traditional products have imperfect glass fixing methods and sealing structures, making the connection between the glass and the window frame / sash prone to water leakage and air leaks due to poor sealing. This is especially problematic in rainy or temperature-sensitive areas, directly affecting indoor comfort and even causing window frame damage from moisture, shortening the lifespan of doors and windows. Therefore, we propose a seamless welded casement window. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a seamless welded casement window, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a seamless welded casement window, comprising:

[0006] The window assembly comprises a frame, glass, a central column, a sub-frame, and a sash. The central column is spliced ​​with the frame. The frame is divided into a frame body and a sash body by the central column. The glass includes a first glass for the frame body and a second glass for the sash body. Both the first and second glass are 5mm+12A+5mm insulated tempered glass. A sash body is provided on the inner side of the sash body portion of the frame. The sash body has a hardware fitting groove, which is a standardized groove with a width of 18mm and a depth of 22mm. The frame body is fixed to the first glass by a frame pressure line, and the sash body is fixed to the second glass by a sash pressure line. The connection between the first glass and the frame pressure line and the connection between the second glass and the sash pressure line are both fixed with glass glue, with a thickness of 2-3mm. The sub-frame is a frame with an integrated structure of the window sash and the screen sash, and the sub-frame wall thickness is 1.4mm.

[0007] The rubber strips are installed at the joint gaps between the frame material and the first glass and between the sash material and the second glass. The rubber strips are made of EPDM rubber with a Shore hardness of 70±5A and a cross-sectional size of 6mm×10mm, to achieve a seal between the frame material and the first glass and between the sash material and the second glass.

[0008] Preferably, the straight joints of the frame and the central column are fixedly connected by seamless welding with a weld penetration depth of ≥3mm. The width of both the frame and the central column is set to 90mm. The window sash and the screen sash are both seamlessly welded with a weld point spacing of ≤500mm. All gaps around the casement window are coated with glass glue to achieve sealing and waterproofing. The glass glue is a neutral silicone weather-resistant adhesive.

[0009] Preferably, an anti-theft frame is installed around the outer edge of the frame material. The anti-theft frame is made of 30mm wide cold-rolled steel plate with a thickness of 1.2mm. The anti-theft frame and the frame material are fixedly connected by M5 self-tapping screws to form an anti-theft protection structure with a screw spacing of 300mm.

[0010] Preferably, the sub-frame is fitted onto the outer side of the fan material and the mesh fan, and the sub-frame is in contact with the outer wall of the fan material and the mesh fan with a gap of ≤0.5mm. An anti-theft grid is fixedly installed on the inner side of the mesh fan. The anti-theft grid is made of φ8mm round steel with a grid size of 150mm×150mm. The anti-theft grid is distributed in a grid pattern along the outline of the mesh fan. The inner side of the mesh fan is covered with a mesh. The mesh is 18-mesh high-transparency polyester mesh with a yarn diameter of 0.18mm. The edge of the mesh is in contact with the inner wall of the mesh fan. A mesh adhesive strip is installed at the edge where the mesh and the mesh fan are in contact. The mesh adhesive strip is a 5mm×8mm EPDM rubber strip to achieve a seal between the mesh and the mesh fan.

[0011] Preferably, the fan material has at least two hardware accessory slots, located at the top and side of the fan material respectively, and the size of the slots is compatible with the installation size of commonly used standard hardware accessories in the market, and is compatible with GB / T24498-2020 standard hardware. A window sash handle made of aluminum alloy is installed on the outer wall of the fan material, with a length of 120mm and a grip distance of 60mm. The window sash handle is rotatably connected to the fan material, and the rotation torque is 1.5~2.0N・m, realizing the opening and closing operation of the fan material.

[0012] Preferably, a fan handle is installed on the outer side wall of the screen fan. The fan handle is made of ABS material, is 100mm long, and has a frosted surface. The fan handle is rotatably connected to the screen fan, with a rotation angle of 0 to 90°, so as to realize the opening and closing operation of the screen fan.

[0013] Preferably, the frame pressure line is detachably connected to the frame material via a snap-fit ​​structure. The snap-fit ​​structure has a disassembly force ≤30N. The frame pressure line presses against the edge of the first glass with a pressing contact width ≥15mm, thereby fixing the first glass inside the frame material. The fan pressure line is detachably connected to the fan material in the same way as the frame pressure line. The fan pressure line presses against the edge of the second glass with a pressing contact width ≥12mm, thereby fixing the second glass inside the fan material.

[0014] Preferably, the surface of the seamless welded part at the joint between the frame material and the central column is polished, with a surface roughness Ra≤1.6μm, so that the welded part is flush with the outer surface of the frame material and the central column, and the flatness error is ≤0.3mm / m.

[0015] Preferably, a sealing strip is provided between the inner wall of the sub-frame and the outer wall of the window sash and the screen sash. The sealing strip has a cross-section of 8mm×12mm EPDM rubber strip, a compression amount of 30%, and the sealing strip is tightly fitted to the sub-frame, window sash, and screen sash with a fitting gap of ≤0.2mm.

[0016] Preferably, glass glue is applied to the welding gaps between the frame and the central column, the joints between the sub-frame and the sash and the screen sash, the connection between the frame pressure line and the first glass, the connection between the sash pressure line and the second glass, and the gaps around the outer perimeter of the casement window. The glass glue is a neutral silicone glass glue with a curing time of 24 hours at 25°C, achieving overall sealing and waterproofing of the casement window, with a water tightness level ≥ Level 5 in GB / T7106~2019.

[0017] Compared with the prior art, this utility model provides a seamless welded casement window, which has the following beneficial effects:

[0018] 1. This seamless welded casement window features standardized grooves on the sash, 18mm wide and 22mm deep, adapted to the installation dimensions of commonly used hardware fittings. At least two grooves are provided, one on the top and one on the side of the sash, allowing direct procurement of universal hardware fittings conforming to GB / T24498-2020 standards, significantly reducing inventory pressure and procurement costs. The frame and center column width are uniformly widened to 90mm, offering better compatibility with most mainstream window sizes compared to the traditional 85mm specification, maintaining architectural facade dimensional harmony during assembly. The subframe is designed as an integrated structure of the window sash and screen sash, with a wall thickness of 1.4mm. The subframe fits tightly onto the outer side of the sash and screen sash, with a fitting gap ≤0.5mm. An 8mm×12mm EPDM sealing strip with 30% compression is added between the inner wall and the outer wall of the window sash and screen sash. At the direct connection between the frame and the central column, the weld penetration depth is ≥3mm. For the window sash and screen sash, the weld spacing is ≤500mm. Seamless welding is used. After grinding, the surface roughness Ra of the welded area is ≤1.6μm, flush with the outer surface, with a flatness error ≤0.3mm / m, eliminating the splicing gaps of traditional split structures. EPDM rubber strips with a Shore hardness of 70±5A and a cross-section of 6mm×10mm are installed at the joints between the glass and the frame / sash. Additionally, a 2-3mm thick layer of silicone sealant is applied to the welded joints between the frame and the central column, the joints between the sub-frame and the sash / screen sash, and the connection between the molding and the glass. Neutral silicone sealant is also applied to the outer gaps around the casement window. The curing time is 24h / 25℃, ensuring the overall water tightness reaches level 5 in GB / T7106~2019, blocking rainwater and air intrusion at the source of the gaps. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the present invention from A to A.

[0021] Figure 3 This is a cross-sectional view of the present invention, B-B.

[0022] Figure 4 This is a cross-sectional view of the present invention from C to C.

[0023] In the diagram: 1. Frame material; 2. Glass; 2A. First glass; 2B. Second glass; 3. Sealing strip; 4. Central column; 5. Sub-frame; 6. Sash material; 7. Sash molding; 8. Frame molding; 9. Security frame; 10. Screen sash; 11. Security grille; 12. Screen; 13. Screen sealing strip; 14. Window sash handle; 15. Screen sash handle; 16. Glass sealant. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 A seamless welded casement window, comprising:

[0026] The frame consists of a frame 1, glass 2, central column 4, sub-frame 5, and sash 6. The central column 4 is spliced ​​with the frame 1. The frame 1 is divided into a frame body and a sash body by the central column 4. The glass 2 includes a first glass 2A for the frame body and a second glass 2B for the sash body. The sash body 6 is provided on the inner side of the sash body of the frame 1. The sash body 6 is provided with a hardware fitting slot, and the hardware fitting slot is a standardized slot. The frame 1 is fixed to the first glass 2A by the frame pressure line 8. The sash body 6 is fixed to the second glass 2B by the sash pressure line 7. The connection between the first glass 2A and the frame pressure line 8 and the connection between the second glass 2B and the sash pressure line 7 are both fixed with glass glue 16. The sub-frame 5 is a frame with an integrated structure of window sash and screen sash 10.

[0027] The adhesive strip 3 is installed at the bonding gap between the frame material 1 and the first glass 2A and the sash material 6 and the second glass 2B to achieve sealing between the frame material 1 and the first glass 2A and the sash material 6 and the second glass 2B.

[0028] Furthermore, the straight joints of the frame 1 and the central column 4 are fixedly connected by seamless welding. The width of both the frame 1 and the central column 4 is set to 90mm. The window sash and the screen sash 10 are both seamlessly welded. Glass glue 16 is applied to the gaps around the casement window to achieve sealing and waterproofing. After grinding, the seamless weld at the straight joint of the frame 1 and the central column 4 eliminates the unevenness of traditional splicing, avoids cleaning dead corners caused by uneven surfaces, and facilitates daily maintenance. The seamless welding of the window sash and the screen sash 10 makes the connection between the two tighter and reduces the problem of dust accumulation caused by gaps.

[0029] Furthermore, an anti-theft frame 9 is installed around the outer edge of the frame material 1. The anti-theft frame 9 is fixedly connected to the frame material 1 to form an anti-theft protection structure. After the anti-theft frame 9 is fixedly connected to the frame material 1, a surrounding protective structure is formed, which can protect the edge of the window frame and prevent the outer edge of the frame material 1 from being damaged by collision during transportation or installation. At the same time, the presence of the anti-theft frame 9 also enhances the stability of the connection between the window frame and the wall, reduces the displacement problem of the window frame due to long-term stress, and ensures the stability of the overall structure of the casement window.

[0030] Furthermore, the sub-frame 5 is fitted onto the outer side of the fan material 6 and the mesh fan 10, and the sub-frame 5 is attached to the outer wall of the fan material 6 and the mesh fan 10. An anti-theft grid 11 is fixedly installed on the inner side of the mesh fan 10, and the anti-theft grid 11 is distributed in a grid pattern along the outline of the mesh fan 10. A mesh 12 covers the inner side of the mesh fan 10, and the edge of the mesh 12 is attached to the inner wall of the mesh fan 10. A mesh adhesive strip 13 is installed at the edge where the mesh 12 and the mesh fan 10 are attached, achieving the desired fit between the mesh 12 and the mesh fan 10. The sealing between the screen fan 10 and the screen fan 10 is achieved by ensuring that the dimensions of the sub-frame 5 precisely match the outer walls of the screen fan 6 and the screen fan 10, thus limiting the lateral displacement of the screen fan 6 and the screen fan 10 and preventing misalignment during opening and closing. In addition to preventing mosquitoes and insects, the screen 12 can also block small debris falling from the outside from entering the room. The screen adhesive strip 13 is tightly attached to the screen 12 and the screen fan 10 to prevent the edges of the screen 12 from curling or loosening due to long-term use, thereby extending the service life of the screen 12.

[0031] Furthermore, the sash panel 6 has at least one hardware accessory slot, and the size of the slot is compatible with the installation size of standard hardware accessories commonly used in the market. A sash handle 14 is installed on the outer wall of the sash panel 6. The sash handle 14 is rotatably connected to the sash panel 6 to realize the opening and closing operation of the sash panel 6. The sash panel 6 has at least one hardware accessory slot, and different functional hardware accessories, such as limiters and locks, can be installed according to actual needs to improve the functionality of the casement window. The rotatable connection between the sash handle 14 and the sash panel 6 is provided with a positioning structure, which can keep the sash stable when it is opened to a specific angle, prevent the sash from shaking randomly due to wind, and improve the safety of use.

[0032] Furthermore, a screen handle 15 is installed on the outer wall of the screen sash 10. The screen handle 15 is rotatably connected to the screen sash 10 to realize the opening and closing operation of the screen sash 10. The installation position of the screen handle 15 avoids the screen 12, so as to avoid friction damage to the screen 12 when operating the handle. At the same time, the height of the screen handle 15 is adapted to the usage habits of most users. Whether it is an adult or a child, they can easily reach and operate it, which improves the convenience of using casement windows, and is especially suitable for family use.

[0033] Furthermore, the frame pressure line 8 is detachably connected to the frame material 1. The frame pressure line 8 presses against the edge of the first glass 2A to fix the first glass 2A inside the frame material 1. The sash pressure line 7 is detachably connected to the sash material 6. The sash pressure line 7 presses against the edge of the second glass 2B to fix the second glass 2B inside the sash material 6. The detachable design of the frame pressure line 8 and the sash pressure line 7 means that when the glass is broken, it is not necessary to disassemble the entire window frame. Only the pressure line needs to be removed to replace the glass, which reduces the difficulty and cost of maintenance. The part where the pressure line contacts the glass is rounded to avoid scratches on the glass during installation due to the sharp edge of the pressure line. At the same time, it can also reduce friction loss between the glass and the pressure line.

[0034] Furthermore, the seamless welded surfaces at the joints of frame material 1 and center column 4 are polished to ensure that the welded surfaces are flush with the outer surfaces of frame material 1 and center column 4. The polishing process at the welded surfaces of frame material 1 and center column 4 makes the welded surfaces smooth, avoiding the problem of traditional unpolished welds easily snagging clothing or causing scratches. In addition, the smooth welded surfaces provide a good foundation for subsequent spraying of decorative layers, ensuring uniform adhesion of the decorative layers and improving the overall aesthetics and corrosion resistance of the window frame.

[0035] Furthermore, a sealing strip is provided between the inner wall of the sub-frame 5 and the outer wall of the window sash and screen sash 10. The sealing strip is tightly fitted to the sub-frame 5, window sash, and screen sash 10. The sealing strip on the inner wall of the sub-frame 5 has good weather resistance and can maintain its elasticity in alternating high and low temperature environments, preventing the strip from hardening and cracking due to temperature changes. At the same time, the tight fit between the sealing strip and the sub-frame 5, window sash, and screen sash 10 can also reduce friction noise between components during opening and closing, improving the quietness of the casement window.

[0036] Furthermore, glass glue 16 is applied to the welding gaps between the frame material 1 and the central column 4, the joints between the sub-frame 5 and the sash material 6 and the screen sash 10, the connection between the frame pressure line 8 and the first glass 2A, the connection between the sash pressure line 7 and the second glass 2B, and the outer gaps around the casement window. This achieves overall sealing and waterproofing of the casement window. The glass glue 16 at the connection between the frame pressure line 8 and the first glass 2A, and the sash pressure line 7 and the second glass 2B, enhances the connection between the pressure line and the glass, preventing the glass from shifting due to loosening of the pressure line after long-term use. The glass glue 16 in the outer gaps around the casement window also plays a certain decorative role, covering up gap defects and making the connection between the casement window and the wall more beautiful, thus improving the overall decoration effect.

[0037] Structural Description:

[0038] Frame material 1: This is the basic frame structure of the casement window. It is divided into the frame body and the sash body by the central column 4. A 30mm wide cold-rolled steel anti-theft frame 9 with a thickness of 1.2mm is installed around the outer edge. The straight part is seamlessly welded to the central column 4 with a weld depth of ≥3mm and polished to Ra≤1.6μm. The first glass 2A is also fixed by the frame pressure line 8 with a contact width of ≥15mm, providing structural support for the entire window.

[0039] Glass 2: Includes a first glass 2A for the frame and a second glass 2B for the fan body. Both the first glass 2A and the second glass 2B are 5mm+12A+5mm insulated tempered glass. They are fixed by pressing the frame pressure line 8 and the fan pressure line 7 respectively, with a contact width of ≥12mm. The connecting parts are coated with 2-3mm thick neutral silicone glass glue 16, and the bonding gap is provided with a 6mm×10mm EPDM rubber strip 3 to achieve light transmission and sealing.

[0040] Rubber strip 3: It is set in the bonding gap between frame 1 and first glass 2A, and sash 6 and second glass 2B. It is a EPDM rubber strip with a Shore hardness of 70±5A and a cross section of 6mm×10mm. It is tightly attached to each component to prevent air and rainwater from seeping in and improve the sealing and waterproof performance of the casement window.

[0041] Central column 4: It is spliced ​​with frame material 1 and seamlessly welded at the straight joint, with a weld depth ≥3mm and a width of 95mm. It divides frame material 1 into frame body and sash body. The welded joint is ground to Ra≤1.6μm and the flatness error ≤0.3mm / m, which enhances the stability of the entire window structure and also improves the aesthetics of splicing with other window types.

[0042] Sub-frame 5: This is an integrated frame structure for the window sash and screen sash 10, with a wall thickness of 1.4mm. It is fitted onto the outside of the sash material 6 and the screen sash 10, with a fitting gap of ≤0.5mm. The inner wall is equipped with a EPDM sealing strip with a cross section of 8mm×12mm and a compression amount of 30%. Neutral silicone glass glue 16 is applied to the fitting gap to improve the sealing and waterproof performance, with a water tightness of ≥5 and the overall aesthetics of the window.

[0043] Sash 6: Located on the inner side of the sash body of frame 1, it has two standardized hardware accessory slots with a width of 18mm and a depth of 22mm. The second glass 2B is fixed by the sash pressure line 7. The outer wall is equipped with a 120mm long aluminum alloy sash handle 14 with a rotation torque of 1.5~2.0N・m, so as to realize the universal installation of sash opening and closing and hardware accessories.

[0044] Fan pressure line 7: It can be detachably connected to the fan material 6 through a snap-on structure. The detachment force is ≤30N. It is pressed on the edge of the second glass 2B with a contact width ≥12mm to fix the glass. The connection part is coated with 2-3mm thick glass glue 16. The pressing surface is rounded to avoid scratching the glass and to facilitate the replacement of the glass later.

[0045] Frame pressure line 8: It can be detachably connected to the frame material 1 through a snap-on structure. The detachment force is ≤30N. It is pressed on the edge of the first glass 2A with a contact width ≥15mm to fix the glass. The connection part is coated with 2-3mm thick glass glue 16. The structure is simple and easy to disassemble, reducing the difficulty and cost of glass maintenance.

[0046] Anti-theft frame 9: Made of 30mm wide cold-rolled steel plate with a thickness of 1.2mm, it is installed around the outer edge of frame material 1 and fixed to frame material 1 with M5 self-tapping screws at 300mm intervals to form an anti-theft protection structure, protect the edge of frame material 1 from collision, and also enhance the stability of the connection between the window frame and the wall.

[0047] Screen sash 10: It forms an integral structure with the window sash through the sub-frame 5, and adopts seamless welding with a welding point spacing of ≤500mm. The outer wall is equipped with a 100mm long ABS screen sash handle 15 with a frosted surface. The inner side is equipped with a φ8mm round steel anti-theft grille 11 with a mesh size of 150mm×150mm and an 18-mesh polyester screen 12, which realizes the functions of mosquito prevention and anti-theft.

[0048] Anti-theft grille 11: Made of φ8mm round steel, it is fixed to the inside of the screen sash 10 with a mesh size of 150mm×150mm. It enhances the impact resistance of the screen sash 10 and forms a double anti-theft system with the anti-theft frame 9, improving the security of the window.

[0049] Mesh 12: It is an 18-mesh high-permeability polyester mesh with a yarn diameter of 0.18mm. It covers the inside of the mesh fan 10, and the edge is attached to the inner wall of the mesh fan 10. The edge is fitted with a 5mm×8mm EPDM mesh strip 13 to block mosquitoes and small debris from entering the room and ensure a clean indoor environment.

[0050] Mesh strip 13: It is a 5mm×8mm EPDM rubber strip, which is installed on the edge of the mesh 12 and the mesh fan 10 to fit tightly together, prevent the mesh 12 from curling and loosening, and also enhance the sealing performance of the mesh fan 10 to prevent dust from seeping in.

[0051] Window sash handle 14: Made of aluminum alloy, 120mm in length, 60mm in grip distance, installed on the outer wall of sash material 6, rotatably connected to sash material 6, with a rotation torque of 1.5~2.0N・m, with a positioning structure, which can drive sash material 6 to open and close and fix the opening angle of the window sash, preventing the window sash from shaking due to wind.

[0052] The handle 15 of the screen fan is made of ABS material, 100mm in length, with a frosted surface. It is installed on the outer wall of the screen fan 10 and is rotatably connected to the screen fan 10. The angle is 0 to 90 degrees. The installation position avoids the screen 12, making it easy to operate the screen fan 10 to open and close. The height is also suitable for the usage habits of most users.

[0053] Glass glue 16: Neutral silicone weather-resistant glue, curing time 24h / 25℃, application thickness 2~3mm, covering multiple areas such as the welding gap between frame material 1 and central column 4, and the bonding gap of sub-frame 5, filling gaps, bonding gap ≤0.2mm, blocking rainwater and air intrusion, while covering gap defects and improving the overall appearance of the window;

[0054] Working principle: The frame material 1 and the central column 4 are first fixedly connected by seamless welding, with a weld penetration depth ≥3mm. The welded parts are ground to a surface roughness Ra≤1.6μm and a flatness error ≤0.3mm / m. This not only provides a stable structural foundation for the entire window type, avoiding the problem of loosening in traditional splicing structures, but also eliminates the potential leakage hazards caused by splicing gaps. At the same time, the uniform 90mm width of both, compared with the traditional 85mm specification, can maintain size coordination with other mainstream window types when assembled on the same building facade, ensuring the integrity and aesthetics of the building's appearance. The sub-frame 5, as an integrated structural frame of the window sash and screen sash 10, has a wall thickness of 1.4mm and is tightly fitted to the outside of the sash material 6 and screen sash 10, with a fitting gap ≤0.5mm. The inner wall of the window sash and the outer wall of the screen sash 10 are sealed with 8mm×12mm EPDM sealing strips, compressed by 30%, to initially block outside air and rainwater from entering the interior of the window. Meanwhile, 2-3mm thick neutral silicone sealant 16 is applied to the welding gaps between the frame 1 and the central column 4, the joints between the sub-frame 5 and the sash 6 and the screen sash 10, and the outer gaps around the casement window. After curing for 24 hours at 25℃, this further fills the gaps between the components, ≤0.2mm, forming a multi-layered sealing and waterproof barrier. This ensures the overall water tightness of the window reaches level 5 in GB / T7106-2019, completely solving the problem of air leakage and water seepage caused by imperfect sealing structures in traditional casement windows. When the user needs to open or close the window sash... When operating the sash, rotating the 120mm long aluminum alloy window sash handle 14 mounted on the outer wall of the sash panel 6 produces a rotation torque of 1.5~2.0N・m. Through the rotational connection between the window sash handle 14 and the sash panel 6, the sash panel 6 can be smoothly opened and closed horizontally along the hinge. The two standardized hardware accessory slots on the sash panel 6, with a width of 18mm and a depth of 22mm, ensure stable installation and flexible operation of hardware accessories such as the window sash handle 14, which conform to the GB / T24498-2020 standard. This avoids problems such as accessory jamming, incompatibility, or difficulty in replacement caused by non-standardized hardware slots in traditional casement windows. To operate the screen sash 10, rotate the 100mm long ABS screen sash handle 15 on the outer wall of the screen sash 10; the surface has a frosted finish. The screen fan handle 15 is connected to the screen fan 10 by rotation, with an angle of 0-90°, allowing the screen fan 10 to be easily opened and closed. The 18-mesh high-permeability polyester mesh 12 covering the inner side of the screen fan 10, with a yarn diameter of 0.18mm, effectively blocks mosquitoes from entering the room. The 5mm×8mm EPDM mesh adhesive strip 13 installed at the edge of the mesh 12 where it meets the inner wall of the screen fan 10 seals the connection gap between the mesh 12 and the screen fan 10, preventing dust from entering through the gap. At the same time, the φ8mm round steel anti-theft grille 11, with a mesh size of 150mm×150mm, is fixedly installed on the inner side of the screen fan 10, which enhances the impact resistance of the screen fan 10. It is combined with the 30mm wide cold-rolled steel anti-theft frame 9, with a thickness of 1mm, installed around the outer edge of the frame material 1.2mm thick, secured with M5 self-tapping screws spaced 300mm apart, forming a double anti-theft protection system, significantly improving the security level of the window and avoiding the problem of insufficient anti-theft performance of traditional casement windows; the frame material 1 is connected to the frame pressure line 8 by a snap-on detachable connection, with a disassembly force ≤30N pressing against the edge of the first glass 2A, and a contact width ≥15mm, to achieve a stable fixation of the first glass 2A on the inside of the frame material 1; the sash material 6 is connected to the sash pressure line 7 by a snap-on detachable connection, with a disassembly force ≤30N pressing against the edge of the second glass 2B, and a contact width ≥12mm, to complete the fixation of the second glass 2B on the inside of the sash material 6. This detachable pressure line fixing method ensures that the glass is firmly installed. The design ensures sufficient contact width, preventing glass loosening issues common with traditional glass fixing methods and facilitating future replacement and maintenance in case of glass damage. Furthermore, a 2-3mm thick layer of neutral silicone sealant 16 is applied to the connection points between the first glass panel 2A and the frame pressure line 8, and between the second glass panel 2B and the sash pressure line 7. Additionally, EPDM rubber strips 3 (6mm x 10mm cross-section, Shore A hardness 70±5A) are installed at the gaps between the frame material 1 and the first glass panel 2A, and between the sash material 6 and the second glass panel 2B. These further seal the gaps between the glass and the frame material 1 and the sash material 6, reducing indoor and outdoor air convection, improving the window's thermal insulation effect, and preventing rainwater from seeping in through the glass joints.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seamless welded casement window, characterized in that, include: The frame (1), glass (2), central column (4), sub-frame (5), and sash (6) are provided. The central column (4) is spliced ​​with the frame (1). The frame (1) is divided into a frame body and a sash body by the central column (4). The glass (2) includes a first glass (2A) for the frame body and a second glass (2B) for the sash body. The sash body of the frame (1) is provided with a sash (6) on the inner side. The sash (6) is provided with a hardware fitting slot, and the hardware fitting slot is a standardized slot. The frame (1) is fixed to the first glass (2A) by a frame pressure line (8). The sash (6) is fixed to the second glass (2B) by a sash pressure line (7). The connection between the first glass (2A) and the frame pressure line (8) and the connection between the second glass (2B) and the sash pressure line (7) are both fixed with glass glue (16). The sub-frame (5) is a frame body with an integrated structure of window sash and screen sash (10). The adhesive strip (3) is installed at the bonding gap between the frame material (1) and the first glass (2A) and the fan material (6) and the second glass (2B) to achieve sealing between the frame material (1) and the first glass (2A) and the fan material (6) and the second glass (2B).

2. A seamless welded casement window according to claim 1, characterized in that, The frame material (1) and the central column (4) are fixedly connected by seamless welding at the joint. The width of the frame material (1) and the central column (4) is set to 90mm. The window sash and the screen sash (10) are both seamlessly welded. Glass glue (16) is applied to the gaps around the casement window to achieve sealing and waterproofing.

3. A seamless welded casement window according to claim 1, characterized in that, An anti-theft frame (9) is installed around the outer edge of the frame material (1), and the anti-theft frame (9) is fixedly connected to the frame material (1) to form an anti-theft protection structure.

4. A seamless welded casement window according to claim 1, characterized in that, The sub-frame (5) is fitted on the outside of the fan material (6) and the mesh fan (10), and the sub-frame (5) is in contact with the outer wall of the fan material (6) and the mesh fan (10). The anti-theft grid (11) is fixedly installed on the inner side of the mesh fan (10). The anti-theft grid (11) is distributed in a grid pattern along the outline of the mesh fan (10). The inner side of the mesh fan (10) is covered with a mesh (12). The edge of the mesh (12) is in contact with the inner wall of the mesh fan (10). A mesh adhesive strip (13) is installed at the edge where the mesh (12) and the mesh fan (10) are in contact, so as to achieve a seal between the mesh (12) and the mesh fan (10).

5. A seamless welded casement window according to claim 4, characterized in that, The number of hardware accessory slots provided on the fan material (6) is at least one, and the size of the slot is compatible with the installation size of the standard hardware accessories in the market. A window sash handle (14) is installed on the outer wall of the fan material (6). The window sash handle (14) is rotatably connected to the fan material (6) to realize the opening and closing operation of the fan material (6).

6. A seamless welded casement window according to claim 4, characterized in that, A handle (15) is installed on the outer wall of the mesh fan (10). The handle (15) is rotatably connected to the mesh fan (10) to realize the opening and closing operation of the mesh fan (10).

7. A seamless welded casement window according to claim 1, characterized in that, The frame pressing line (8) is detachably connected to the frame material (1). The frame pressing line (8) presses against the edge of the first glass (2A) to fix the first glass (2A) inside the frame material (1). The fan pressing line (7) is detachably connected to the fan material (6). The fan pressing line (7) presses against the edge of the second glass (2B) to fix the second glass (2B) inside the fan material (6).

8. A seamless welded casement window according to claim 1, characterized in that, The seamless welded surfaces at the joints of the frame material (1) and the central column (4) are polished to ensure that the welded surfaces are flush with the outer surfaces of the frame material (1) and the central column (4).

9. A seamless welded casement window according to claim 1, characterized in that, A sealing strip is provided between the inner wall of the sub-frame (5) and the outer wall of the window sash and the screen sash (10), and the sealing strip is tightly fitted to the sub-frame (5), the window sash, and the screen sash (10).

10. A seamless welded casement window according to claim 9, characterized in that, The welding seams between the frame material (1) and the central column (4), the joints between the sub-frame (5) and the sash material (6) and the mesh sash (10), the connection between the frame pressure line (8) and the first glass (2A), the connection between the sash pressure line (7) and the second glass (2B), and the seams around the outer perimeter of the casement window are all coated with glass glue (16) to achieve overall sealing and waterproofing of the casement window.

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