A plastic steel window structure for changing a sliding window into a casement window without disassembly

Abstract

The utility model discloses a kind of plastic steel window structure for making push-pull window into casement window without disassembly, including push-pull window inner opening sash, push-pull conversion frame, push-pull window middle stile and original push-pull window frame. The original push-pull window frame is rectangular closed frame body, section is equipped with slide rail cavity and outer side adhering step;The conversion frame is overall closed multi-cavity profile, is equipped with steel lining inside, outer edge is equipped with the step of adhering with original push-pull window frame, and is connected by fastener;The inner opening sash is rectangular frame profile, is equipped with steel lining inside, both sides are equipped with sealing strip groove, outer side is equipped with glass groove;The middle stile is symmetrical structure, is equipped with steel lining in central cavity, both sides are equipped with glass groove and sealing strip groove, upper end and lower end are connected with the conversion frame;The conversion frame, inner opening sash and middle stile are equipped with drainage cavity and flow guide groove, and the lower edge of the outer side wall of the lower horizontal member of the conversion frame is equipped with drainage hole.

Description

Technical Field

[0001] This utility model relates to the field of building door and window structures, and more specifically to a PVC window structure that can convert a sliding window into a casement window without disassembly. Background Technology

[0002] In the field of building doors and windows, PVC windows are widely used due to their good thermal insulation, heat preservation, and moderate cost. Among them, sliding windows are a common type of window. They have a simple structure, with the window sash sliding on a track to open and close, offering advantages such as convenient operation and small space occupation. However, sliding windows have some shortcomings that cannot be ignored in actual use.

[0003] Firstly, in terms of airtightness and watertightness, sliding windows rely on the guide rail cavity, and there is usually a large gap between the window sash and the window frame. Even with the installation of weatherstripping, it is easy to wear down due to long-term friction, resulting in a weakened sealing effect. Rainwater can easily seep into the room through the gaps under wind pressure, and at the same time, cold outdoor air and hot indoor air exchange through the gaps, resulting in increased energy consumption.

[0004] Secondly, in terms of structural strength and stability, sliding windows mainly rely on upper and lower sliding tracks for stress distribution. The window sashes lack multi-point locking and steel reinforcement support, resulting in relatively poor wind pressure resistance and overall rigidity. Especially in high-rise buildings or strong wind environments, they are prone to shaking, deformation, and even affecting safety.

[0005] Secondly, from a drainage design perspective, although traditional sliding windows have drainage holes in the lower horizontal frame, their drainage channels are simple, making them prone to overflowing or poor drainage during heavy rain or concentrated external water flow. Some sliding windows also lack anti-backflow ribs outside the drainage holes, posing a risk of rainwater backflow.

[0006] In addition, regarding service life and maintenance, sliding window tracks are prone to dust accumulation and blockage after long-term use, and the roller components are easily worn, causing uneven sliding or even derailment, requiring frequent maintenance. Furthermore, the sliding sash and frame rely on a single track for support, which can easily loosen over time, affecting the overall performance of the window.

[0007] Current renovation methods mostly involve removing the original sliding window frame and then reinstalling a casement window frame. This method has the following drawbacks:

[0008] 1. Highly destructive during construction: Removing the original frame can easily damage the surrounding walls and decorative surfaces, such as tiles, putty layers, or external wall insulation layers, causing difficulties in secondary repairs.

[0009] 2. Long construction period: The original window frame needs to be removed first, and then the new frame needs to be remeasured, made and installed. The whole process is complicated and the cycle is long.

[0010] 3. High cost: In addition to the material costs of new frames and window sashes, additional costs such as wall repair and decoration repair are required.

[0011] 4. Potential for water seepage: If the joint between the new frame and the wall is not properly treated, it can easily form a seepage channel, reducing the overall waterproof performance.

[0012] Therefore, there is an urgent need in the market for a renovation solution that does not require disassembly, which can make full use of the original sliding window frame, reduce damage to the wall, and introduce the structural advantages of casement windows to improve the airtightness, watertightness and overall strength of the window. Utility Model Content

[0013] This utility model provides a PVC window structure that can convert a sliding window into a casement window without disassembly. This structure can transform a sliding window into a casement window by adding a conversion frame and an inward-opening sash without removing the original sliding window frame. The overall installation is convenient and the structure is stable.

[0014] To achieve the above objectives, this utility model provides the following technical solution:

[0015] A PVC window structure that converts a sliding window into a casement window without disassembly includes an inward-opening sliding window sash, a sliding-to-casement conversion frame, a sliding window mullion, and the original sliding window frame;

[0016] The original sliding window frame is a rectangular closed frame structure with a sliding rail cavity and an outer fitting step in the cross section;

[0017] The conversion frame is an integral closed frame profile with a multi-cavity rectangular structure in cross-section. The main cavity is lined with steel, and the outer edge is provided with a step that fits into the original sliding window frame slide rail cavity.

[0018] The conversion frame is connected to the original sliding window frame by fasteners;

[0019] The sliding window has an inner opening sash with a rectangular frame structure, a cross section with multiple cavities, an internal steel lining, sealing strip mounting grooves on both sides, and a glass mounting groove on the outer side.

[0020] The sliding window has a symmetrical cross-section, a steel lining in the central cavity, glass mounting grooves and sealing strip mounting grooves on both sides, and is connected to the conversion frame at the top and bottom.

[0021] The conversion frame, the inner opening fan, and the middle mullion are provided with drainage chambers and guide grooves, and the lower edge of the outer side wall of the lower horizontal member of the conversion frame is provided with drainage holes.

[0022] Preferably, the four corners of the conversion frame are fixed into an integral closed frame by welding or corner brackets.

[0023] Preferably, the cross-section of the original sliding window frame includes multiple sliding rail cavities and an outer edge step that fits against the wall.

[0024] Preferably, multiple sealing strips and an equal pressure chamber are provided between the inner opening fan and the conversion frame.

[0025] Preferably, a pressing strip is provided at the joint between the mullion and the inward-opening fan.

[0026] Preferably, the connection between the conversion frame and the original sliding window frame is achieved by using fasteners and expansion joints for multi-point fixation.

[0027] Compared with existing technologies, this utility model, by inserting a sliding-to-case conversion frame inside the original sliding window frame, allows the original frame to be retained and form a close connection with the new frame, avoiding the demolition of the wall and finish and reducing construction damage; by setting steel linings inside the conversion frame, the inward-opening sash of the sliding window, and the mullion of the sliding window, and designing the profile cross-section as a multi-cavity structure, the rigidity and stability of the overall frame are significantly enhanced; by arranging multiple sealing strips between the inward-opening sash and the conversion frame to form an equal pressure cavity, and by adding a pressing strip at the overlap between the mullion and the inward-opening sash, a more robust and stable overall structure is achieved. Multiple sealing interfaces enhance the airtightness and watertightness of the window. By opening drainage holes on the lower edge of the outer wall of the horizontal component under the conversion frame and adding anti-backflow ribs outside the holes, combined with the gentle slope guide groove at the corner of the profile, a continuous and effective drainage path is formed, ensuring smooth drainage. At the same time, this utility model adopts a factory-prefabricated integral conversion frame, which is directly inserted on site and fixed at multiple points with screws and expansion parts, simplifying the construction process and shortening the transformation cycle. Thus, a structural optimization solution for transforming sliding windows into casement windows is achieved without removing the original sliding window frame. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0030] Figure 2 This is a schematic cross-sectional view of the top node of this utility model;

[0031] In the attached image:

[0032] 1- Inward-opening sliding window; 2- Sliding to casement conversion frame; 3- Sliding window stile; 4- Original sliding window frame. Detailed Implementation

[0033] 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.

[0034] Example

[0035] See Figure 1 and Figure 2 This utility model includes an inward-opening sliding window 1, a sliding-to-hinged conversion frame 2, a sliding window stile 3, and the original sliding window frame 4.

[0036] The original sliding window frame 4 is a rectangular closed frame structure, the cross-section of which includes two or three sliding rail cavities, and the outer edge is provided with fitting steps for fixing in the wall opening. The original sliding window frame 4 is made of conventional PVC profile, and reinforcing steel lining can be arranged inside the profile.

[0037] The conversion frame 2 is an integral closed frame profile with a multi-cavity rectangular structure. A rectangular steel liner is inserted into the main load-bearing cavity, with preferred dimensions of 13×30×2mm. The conversion frame 2 is made of type B PVC profile, with a visible wall thickness of 2.5–2.8mm and a non-visible wall thickness of 2.2–2.5mm. The outer edge of the conversion frame has a step, the size of which matches the sliding rail cavity of the original sliding window frame 4 to achieve an insert connection. The four corners of the conversion frame 2 are assembled into an integral closed frame by welding or corner brackets, and connected to the original sliding window frame 4 with self-tapping screws. Expansion bolts are used for anchoring at key locations.

[0038] The sliding window's inward-opening sash 1 has a rectangular frame structure with multiple longitudinal cavities in its cross-section, and an L-shaped steel liner inside. The preferred dimensions are 19×32×2mm. Three sealing strip mounting grooves are provided on both sides of the sash profile, and a glass pressure strip mounting groove is provided on the outer side. Insulating glass can be installed in the glass mounting groove. The profile on the hinge mounting side is thickened and has screw holes for hinge fixing.

[0039] The sliding window mullion 3 has a symmetrical "I"-shaped cross-section, with a rectangular steel lining in the central cavity, preferably measuring 17×30×2mm. The mullion has connecting grooves and screw holes at both ends, allowing it to be fixed to the upper and lower ends of the conversion frame 2 using screws or angle brackets. Both sides of the mullion profile have glass mounting grooves and sealing strip mounting grooves.

[0040] The profiles of the conversion frame 2, the inner sash 1 of the sliding window, and the middle stile 3 of the sliding window are all equipped with independent drainage chambers and guide channels. An external drainage hole is opened on the lower edge of the outer wall of the lower horizontal member of the conversion frame 2, and a backflow prevention rib is set on the outside of the drainage hole. The guide channel forms a gentle slope at the corner of the profile to guide the water flow.

[0041] During installation, the original sliding window frame 4 is first cleaned and positioned; then the prefabricated conversion frame 2 is inserted into the original sliding window frame 4 and fixed at multiple points with screws and expansion bolts; next, the sliding window mullion 3 is installed and fixed to the conversion frame 2; finally, the sliding window inner sash 1, glass, sealing strip and hardware are installed.

[0042] The PVC profiles used in this embodiment all adopt a multi-cavity design, with the steel lining thickness in the main cavity preferably being 2mm. The glass mounting groove is suitable for 5mm to 24mm insulated glass. The sealing structure adopts a three-seal strip and an equal pressure cavity design, and the installation dimensions are compatible with common PVC door and window series standards.

[0043] Without altering the overall structural layout, those skilled in the art can adjust the steel lining cross-section specifications, drainage hole positions, or the number of fasteners according to different window opening sizes, climate environments, and usage requirements, all of which fall within the protection scope of this utility model.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A PVC window structure that converts a sliding window into a casement window without disassembly, comprising an inward-opening sliding window sash (1), a sliding-to-casement conversion frame (2), a sliding window mullion (3), and the original sliding window frame (4), characterized in that: The original sliding window frame (4) is a rectangular closed frame structure with a sliding rail cavity and an outer fitting step in the cross section; The conversion frame (2) is an integral closed frame profile with a multi-cavity rectangular structure in cross section. The main cavity is equipped with a steel lining, and the outer edge is equipped with a step that fits into the slide rail cavity of the original sliding window frame (4). The conversion frame (2) is connected to the original sliding window frame (4) by fasteners; The sliding window inner sash (1) is a rectangular frame profile structure with multiple cavities in the cross section, a steel lining inside, sealing strip mounting grooves on both sides, and a glass mounting groove on the outside; The mullion (3) of the sliding window has a symmetrical cross-section, a steel lining in the central cavity, glass mounting grooves and sealing strip mounting grooves on both sides, and is connected to the conversion frame (2) at the top and bottom. The conversion frame (2), the inner opening fan (1) and the middle mullion (3) are provided with drainage chambers and guide grooves, and the lower edge of the outer side wall of the lower horizontal member of the conversion frame (2) is provided with drainage holes.

2. A uPVC window construction for converting a sliding window into a casement window without disassembly, according to claim 1, wherein The four corners of the conversion frame (2) are fixed into an integral closed frame by welding or corner brackets.

3. A uPVC window construction for converting a sliding window into a casement window without disassembly, as claimed in claim 1, wherein, The cross-section of the original sliding window frame (4) includes multiple sliding track cavities and an outer edge step that fits against the wall.

4. A uPVC window construction for converting a sliding window into a casement window without disassembly, as claimed in claim 1, wherein Multiple sealing strips and an equal pressure chamber are provided between the inner opening fan (1) and the conversion frame (2).

5. A uPVC window construction for converting a sliding window into a casement window without disassembly, as claimed in claim 1 wherein, A pressing strip is provided at the joint between the middle mullion (3) and the inner opening fan (1).

6. A uPVC window construction for converting a sliding window into a casement window without disassembly, according to claim 1, wherein The connection between the conversion frame (2) and the original sliding window frame (4) is fixed at multiple points using fasteners and expansion joints.

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