Lining steel connection reinforcing structure of mullion of plastic-steel door and window

Abstract

The utility model discloses a lining steel connection reinforcing structure of a mullion of a plastic-steel door and window, lining steel is arranged in the mullion, and a connecting hole is formed in the middle of a connecting plate; connecting plates are arranged at the two ends of the lining steel, turnups are arranged at the two ends of each connecting plate, the lining steel is of a hollow structure, the turnups extend into the lining steel, and limiting structures are arranged on the connecting plates, and the lining steel connection reinforcing structure of the mullion of the plastic-steel door and window is simple in structure, convenient to install and high in connection strength.

Description

Technical Field

[0001] The utility model belongs to the field of the connection of the middle stile of doors and windows. Specifically, the utility model relates to a steel lining connection strengthening structure for the middle stile of plastic-steel doors and windows. Background Art

[0002] At present, steel linings are mostly arranged inside the window frames and middle stiles to enhance their structural strength. However, the two are mostly connected by welding, with low connection strength, which easily causes defects such as deformation of the middle stile and cracking at the corners, and further leads to easy shaking of the middle stile in the later stage. During maintenance, restricted by the existing structure of the doors and windows, the maintenance operation is complex. Generally, the overall structure of the doors and windows needs to be replaced, resulting in high maintenance costs.

[0003] The utility model patent with the publication number of CN213063302U disclosed a window frame with a middle stile of high stability on April 27, 2021. It includes a window frame, on which a middle stile is fixedly arranged. The middle stile is perpendicular to the two opposite sides of the window frame and is fixedly connected to the two opposite sides of the window frame. A steel lining is arranged inside the middle stile, and the steel lining abuts against the inner wall of the middle stile. The two ends of the steel lining are flush with the middle stile. The steel lining is provided with slots, and a positioning block is arranged in the inner cavity of the steel lining. The positioning block is fixedly connected to the steel lining. A positioning hole is opened on the side of the positioning block close to the window frame, and a fixing hole is opened at the corresponding position of the window frame for the positioning hole. A positioning bolt is threadedly connected in the fixing hole, and the positioning bolt passes through the positioning hole. The structure of the window frame with a middle stile of high stability is complex and the connection is not convenient enough. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a steel lining connection strengthening structure for the middle stile of plastic-steel doors and windows, which has a simple structure, is convenient to install, and has high connection strength, aiming at the deficiencies of the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] For the steel lining connection strengthening structure of the middle stile of plastic-steel doors and windows, the steel lining is arranged inside the middle stile, and connecting plates are arranged at both ends of the steel lining. A connecting hole is arranged in the middle of the connecting plates; flanges are arranged at both ends of the connecting plates. The steel lining is of a hollow structure, and the flanges extend into the steel lining. A limiting structure is arranged on the connecting plates.

[0007] The limiting structure includes limiting platforms, which are arranged on both sides of the connecting plates and abut against the ends of the steel lining.

[0008] The flanges abut against the inner side of the steel lining.

[0009] Bosses are arranged on the inner side of the connecting plates, and the connecting holes penetrate through the bosses.

[0010] The limiting platforms and the connecting plates are in the same plane, and the flanges are shorter than the inner diameter width of the steel lining.

[0011] The connecting plate and the flanging are connected to form a U-shaped structure.

[0012] The end of the limiting platform and the outer side of the lining steel are in the same plane.

[0013] The technical effect of the present utility model is as follows: By adopting the lining steel connection strengthening structure of the middle stile of the plastic-steel door and window of the present utility model, through setting a connecting plate at the end of the middle stile and carrying out a reasonable structural design on it, the connection strength between the middle stile and the window frame is effectively improved, the deformation of the middle stile and the cracking at the corner can be effectively avoided, the shaking caused by insufficient connection strength of the middle stile is eliminated, and the reliable connection strength is ensured; The number of connecting pieces used for the connecting plate is small, which greatly simplifies the connection operation steps, can be used on the existing door and window structures to enhance the structural strength, and avoids the high maintenance cost caused by overall replacement. The whole connecting plate occupies a small space and is arranged inside the middle stile, having little influence on the structure of the existing doors and windows. Description of the Drawings

[0014] This specification includes the following drawings, and the shown contents are respectively:

[0015] Figure 1 It is a schematic diagram of the installed structure of the lining steel connection strengthening structure of the middle stile of the plastic-steel door and window of the present utility model;

[0016] Figure 2 It is a schematic diagram of the connection structure between the lining steel and the connecting plate of the present utility model;

[0017] Figure 3-1 and Figure 3-2 It is a schematic diagram of the structure of the connecting plate of the present utility model.

[0018] The marks in the figure are: 1, middle stile; 2, lining steel; 3, connecting plate; 4, flanging; 5, connecting hole; 6, limiting platform; 7, boss. Detailed Embodiment

[0019] Next, with reference to the drawings, through the description of the embodiments, the specific embodiments of the present utility model will be further described in detail. The purpose is to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and contribute to its implementation.

[0020] Such as Figures 1 to 3-2As shown in the figure, in the lining steel connection and reinforcement structure of the middle stile of the plastic-steel door and window, the lining steel 2 is arranged inside the middle stile 1. Connecting plates 3 are provided at both ends of the lining steel 2, and a connecting hole 5 is provided in the middle of the connecting plate 3; flanges 4 are provided at both ends of the connecting plate 3. The lining steel 2 is a hollow structure, and the flanges 4 extend into the lining steel 2. A limiting structure is provided on the connecting plate 3. The lining steel 2 can enhance the structural strength of the middle stile 1. The flanges 4 extending into the lining steel 2 form a restriction between the connecting plate 3 and the lining steel 2. The connecting hole 5 on the connecting plate 3 is used to connect with the window frame. Therefore, the connection between the lining steel 2 of the middle stile 1 and the window frame can be realized through the connecting plate 3.

[0021] As Figures 2 to 3-2 shown, the limiting structure includes a limiting platform 6. The limiting platform 6 is arranged on both sides of the connecting plate 3, and the limiting platform 6 abuts against the end of the lining steel 2. To ensure the firm and stable installation position of the connecting plate 3, the widths on both sides of the connecting plate 3 are extended to form the limiting platform 6. The size of the limiting platform 6 is larger than the opening size of the lining steel 2. Therefore, the situation where the connecting plate 3 falls into the lining steel 2 and cannot be taken out will not occur, ensuring the stability of the connecting plate 3 and further ensuring the connection quality of the overall door and window; when installing the connecting plate 3, when the limiting platform 6 abuts against the lining steel 2, it can be judged that the connecting plate 3 is installed in place, which simplifies the judgment steps of the operator.

[0022] As Figure 2 shown, the flanges 4 abut against the inner side of the lining steel 2. In the above structure, both flanges 4 are in contact with the lining steel 2, which can avoid the shaking of the window frame and the middle stile 1 after installation, and can further improve the connection stability of the middle stile 1. In actual use, holes can be opened on the flanges 4 and bolted to achieve the effect of rigid connection between the lining steel 2 in the window frame and the lining steel 2 in the middle stile 1.

[0023] As Figure 3-2 shown, a boss 7 is provided on the inner side of the connecting plate 3, and the connecting hole 5 penetrates through the boss 7. The boss 7 is located on the inner side of the connecting plate 3 and will not interfere with the connection between the connecting plate 3 and the window frame. The boss 7 extends the hole depth and increases the connection surface of the connecting piece. If a threaded hole is used, the setting of the boss 7 expands the threaded length, making the bolt connection strength between the connecting plate 3 and the window frame more reliable.

[0024] As Figure 3-1 and Figure 3-2 shown, the limiting platform 6 and the connecting plate 3 are in the same plane, and the flanges 4 are shorter than the inner diameter width of the lining steel 2. The connecting plate 3 and the flanges 4 are of an integral structure. During processing, the two ends of the plate of the connecting plate 3 can be directly bent at right angles to form the flanges 4, which can reduce the processing cost. Since fillets are provided at the corner turning points of the lining steel 2, the length of the limiting platform 6 is designed to be shorter than the inner diameter of the lining steel 2. Therefore, the obstruction of the fillets can be avoided, and the overall installation of the connecting plate 3 is more convenient, making the limiting platform 6 completely contact with the end of the lining steel 2.

[0025] As Figure 3-2As shown, the connecting plate 3 is connected to the flanging 4 to form a U-shaped structure. The U-shaped structure is a symmetric structure, which can ensure the reliable installation of the whole connecting plate 3 and is also convenient for processing and production. The two flangings 4 make the stress surfaces of the connecting plate 3 in the horizontal direction equal in size, which can greatly reduce the shaking of the mullion 1 and make the overall structure more firm.

[0026] As Figure 1 shown, the end of the limiting platform 6 and the outer side of the lining steel 2 are in the same plane. The above structure is used to avoid the interference of the setting of the limiting platform 6 on the plastic profile of the mullion 1.

[0027] The lining steel connection strengthening structure of the PVC door and window mullion effectively improves the connection strength between the mullion 1 and the window frame through setting the connecting plate 3 at the end of the mullion 1 and carrying out reasonable structural design. It can effectively avoid the deformation of the mullion 1 and the cracking at the corner, eliminate the shaking of the mullion 1 caused by insufficient connection strength, and ensure the reliable connection strength; the number of connecting pieces used for the connecting plate 3 is small, which greatly simplifies the connection operation steps. It can be used on the existing door and window structure to enhance the structural strength and avoid the high maintenance cost caused by overall replacement. The whole connecting plate 3 occupies a small space and is arranged inside the mullion 1, having little influence on the structure of the existing doors and windows.

[0028] The above has made an exemplary description of the present invention in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. A steel lining connection reinforcement structure for the stile of a plastic steel door and window, characterized in that: The lining steel (2) is arranged in the middle wall (1), and connecting plates (3) are arranged at both ends of the lining steel (2), and a connecting hole (5) is arranged in the middle of the connecting plate (3); flanges (4) are arranged at both ends of the connecting plate (3), the lining steel (2) is a hollow structure, the flanges (4) extend into the lining steel (2), and a limiting structure is arranged on the connecting plate (3).

2. The lining steel connection reinforcement structure of the plastic-steel door and window stile according to claim 1, characterized in that: The limiting structure comprises a limiting platform (6), the limiting platform (6) being arranged on both sides of the connecting plate (3), and the limiting platform (6) being in abutment with the end of the lining steel (2).

3. The lining steel connection reinforcement structure of the plastic-steel door and window stile according to claim 2, characterized in that: The flange (4) abuts against the inner side of the lining steel (2).

4. The steel lining connection reinforcement structure of the plastic steel door and window stile according to claim 3, characterized in that: A boss (7) is provided on the inner side of the connecting plate (3), and the connecting hole (5) passes through the boss (7).

5. The lining steel connection reinforcement structure of the plastic-steel door and window stile according to any one of claims 2 to 4, characterized in that: The limiting platform (6) and the connecting plate (3) are located in the same plane, and the flange (4) is shorter than the inner diameter width of the lining steel (2).

6. The steel lining connection reinforcement structure of the plastic steel door and window stile according to claim 5, characterized in that: The connecting plate (3) and the flange (4) are connected to form a U-shaped structure.

7. The steel lining connection reinforcement structure of the plastic-steel door and window stile according to claim 2, characterized in that: The end of the limiting platform (6) and the outer side of the lining steel (2) are located in the same plane.

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