Plastic-steel door and window mullion connecting structure

Abstract

The utility model discloses a plastic-steel door and window mullion connecting structure which comprises a window frame, a mullion is arranged on the window frame, a connecting block is connected between the window frame and the mullion, the connecting block comprises a bottom plate and a connecting plate, the bottom plate and the window frame are connected with a first screw, and the connecting plate and the mullion are connected with a second screw. Lining steel is arranged in the window frame and the mullion, the first screw is connected with the lining steel in the window frame, the second screw is connected with the lining steel in the mullion, and the mullion connecting structure of the plastic-steel door and window is simple in structure, small in occupied space and reliable in connecting strength.

Description

Technical Field

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

[0002] At present, the middle mullion parts of plastic doors and windows basically adopt welding and fixing of middle mullion profiles and frame profiles. The welding connection can only act on the outside of the profiles. The steel liners of the middle mullion profiles and the frame profiles are still disconnected, and there is no effective rigid connection between the two. As the middle mullion of plastic doors and windows bears a large load and the stress is relatively concentrated, the welding connection strength is insufficient, which is likely to cause phenomena such as middle mullion deformation and corner cracking, affecting the use of the doors and windows.

[0003] The utility model patent with the publication number of CN209780640U discloses a middle mullion strengthening connection block for aluminum-clad wood doors and windows on December 13, 2019. The middle mullion strengthening connection block for aluminum-clad wood doors and windows includes an L-shaped body and a barbed hook integrated with the L-shaped body; the horizontal wall of the L-shaped body matches the clamping groove in the non-closed cavity of the middle mullion aluminum profile for installing glass, its vertical wall is closely attached to the glass installation surface of the middle mullion wood profile, and the end of its vertical wall far from the horizontal wall does not exceed the glass installation surface; the barbed hook is located on the vertical wall at the end of the L-shaped body far from the horizontal wall, and it matches the barbed hook installation groove opened on the middle mullion wood profile at the glass installation surface. The middle mullion strengthening connection block for aluminum-clad wood doors and windows cannot achieve rigid connection between the window frame and the middle mullion. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a connection structure of middle mullions of plastic-steel doors and windows with simple structure, small occupied space and reliable connection strength in view of 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] The connection structure of the middle mullion of the plastic-steel door and window includes a window frame, the middle mullion is arranged on the window frame, a connection block is connected between the window frame and the middle mullion, the connection block includes a bottom plate and a connecting plate, the bottom plate is connected to the window frame with a first screw, and the connecting plate is connected to the middle mullion with a second screw; steel liners are arranged inside both the window frame and the middle mullion, the first screw connects the steel liner inside the window frame, and the second screw connects the steel liner inside the middle mullion. The connecting plate is arranged at both ends of the connection block, the bottom plate is horizontally arranged, the connection block is perpendicular to the bottom plate, the connecting plate and the bottom plate form an L-shaped structure, the connecting plate contacts the outside of the middle mullion, and the bottom end of the middle mullion is located between the connecting plates.

[0007] The connecting plate is provided with a first connecting hole and a second connecting hole, and both the first connecting hole and the second connecting hole are matched with a first screw; both ends of the bottom plate are provided with third connecting holes, and the second screw is matched with the third connecting holes, and the third connecting holes are arranged in pairs.

[0008] The first connecting hole is higher than the second connecting hole, and the connecting line of the first connecting hole and the second connecting hole is obliquely arranged.

[0009] The middle part of the bottom plate is provided with a convex platform, and the convex platform is provided with a threaded hole. The convex platform is located inside the middle stile. The bottom plate and the window frame are also connected with a third screw, and the third screw passes through from the bottom of the window frame and is matched with the threaded hole.

[0010] A sealing cushion block is arranged between the bottom plate and the window frame, and the sealing cushion block is adapted to the size of the bottom plate.

[0011] Reinforcing ribs are evenly distributed on the side of the convex platform.

[0012] The technical effect of the present utility model is as follows: By adopting the connecting structure of the middle stile of the plastic-steel door and window of the present utility model, a connecting block is added at the bottom of the middle stile, replacing the welding connection method, realizing the rigid connection between the window frame and the middle stile, ensuring that the connection strength is reliable enough, avoiding the deformation of the middle stile and the cracking of the corner; the connecting block has a simple structure, is convenient for processing and manufacturing, occupies a small volume, and the hole positions on the connecting plate are reasonably designed, avoiding the interference of screw connection. Description of the Drawings

[0013] This specification includes the following drawings, and the shown contents are respectively:

[0014] Figure 1 is an exploded schematic view of the connecting structure of the middle stile of the plastic-steel door and window of the present utility model;

[0015] Figure 2 is an installation schematic view of the connecting structure of the middle stile of the plastic-steel door and window of the present utility model;

[0016] Figure 3 is a structural schematic view of the connecting block of the present utility model.

[0017] The marks in the figure are: 1, window frame; 2, middle stile; 3, connecting block; 4, bottom plate; 5, connecting plate; 6, convex platform; 7, steel liner; 8, first screw; 9, second screw; 10, third screw; 11, first connecting hole; 12, second connecting hole; 13, third connecting hole; 14, sealing cushion block; 15, reinforcing rib; 16, threaded hole. Detailed Description of the Invention

[0018] The following will, with reference to the accompanying drawings, further elaborate on the specific implementation manners of the present utility model through the description of embodiments, aiming to help those skilled in the art have a more complete, accurate, and in-depth understanding of the inventive concept and technical solutions of the present invention and facilitate its implementation.

[0019] As Figures 1 to 3 shown, the connection structure of the middle mullion of the plastic-steel door and window includes a window frame 1, a middle mullion 2 is arranged on the window frame 1, a connection block 3 is connected between the window frame 1 and the middle mullion 2. The connection block 3 includes a bottom plate 4 and a connection plate 5. The bottom plate 4 is connected to the window frame 1 by a first screw 8, and the connection plate 5 is connected to the middle mullion 2 by a second screw 9. Lining steels 7 are arranged inside both the window frame 1 and the middle mullion 2. The first screw 8 connects the lining steel 7 inside the window frame 1, and the second screw 9 connects the lining steel 7 inside the middle mullion 2.

[0020] The lining steel 7 can be used to improve the structural strength of the window frame 1 and the middle mullion 2. The connection plate 5 is connected to the lining steel 7 of the middle mullion 2 through the first screw 8, and the bottom plate 4 is connected to the lining steel 7 of the window frame 1 through the second screw 9. The connection block 3 realizes its connection with the lining steels 7 of the window frame 1 and the middle mullion 2 through the above connections, achieving the integral connection of the lining steels 7 of the window frame 1 and the middle mullion 2, that is, achieving an effective rigid connection effect between the window frame 1 and the middle mullion 2, and greatly improving the connection strength.

[0021] As Figure 2 and Figure 3 shown, the connection plates 5 are arranged at both ends of the connection block 3, the bottom plate 4 is horizontally arranged, the connection block 3 is vertically arranged with respect to the bottom plate 4, the connection plate 5 and the bottom plate 4 form an L-shaped structure. The connection plate 5 is in contact with the outer side of the middle mullion 2, and the bottom end of the middle mullion 2 is located between the connection plates 5. In the above structure, the first screw 8 is horizontally arranged, the second screw 9 is vertically arranged. At the same time, both sides of the middle mullion 2 are limited by the connection plates 5 and are fixed through screw connection, forming a multi-directional limit fixation for the middle mullion 2. And the connection plate 5 and the bottom plate 4 form an L-shaped structure to adapt to the vertical installation of the middle mullion 2 on the window frame 1, further improving the stability of the connection of the middle mullion 2.

[0022] As Figure 2 shown, the connection plate 5 is provided with a first connection hole 11 and a second connection hole 12, and both the first connection hole 11 and the second connection hole 12 cooperate with the first screw 8. The two ends of the bottom plate 4 are provided with third connection holes 13, and the second screw 9 cooperates with the third connection holes 13. The third connection holes 13 are arranged in pairs. In the above structure, both the first screw 8 and the second screw 9 are arranged in pairs, which can improve the connection strength and the uniformity of the connection effect.

[0023] As Figure 1 and Figure 2As shown, the first connection hole 11 is higher than the second connection hole 12, and the connection line between the first connection hole 11 and the second connection hole 12 is obliquely arranged. The connection block 3 is a centrosymmetric structure, and both the first connection hole 11 and the first connection hole 11 are centrosymmetrically arranged about the threaded hole 16. Two first screws 8 are connected to each connecting plate 5. The above structure can ensure that the four first screws 8 connected do not interfere with each other, and at the same time make full use of the space of the connecting plate 5, which is beneficial to reducing the volume of the connection block 3, achieving the effect of improving the connection strength without increasing the area. The volume of the connection block 3 is reduced, and its exposed area is small, which will not cause too much obstruction to the window frame 1 and the middle mullion 2, and can meet the aesthetic requirements of the doors and windows.

[0024] As Figure 2 shown, a boss 6 is provided in the middle of the bottom plate 4, a threaded hole 16 is provided on the boss 6, the boss 6 is located inside the middle mullion 2, and a third screw 10 is also connected between the bottom plate 4 and the window frame 1. The third screw 10 passes through the bottom of the window frame 1 and cooperates with the threaded hole 16. The setting of the boss 6 further improves the connection reliability between the bottom plate 4 and the window frame 1. During installation, the connection block 3 can also be initially positioned on the window frame 1, facilitating the connection of other screws.

[0025] As Figure 1 shown, a sealing cushion block 14 is provided between the bottom plate 4 and the window frame 1, and the sealing cushion block 14 is dimensionally adapted to the bottom plate 4. The sealing cushion block 14 can form a reliable sealing and waterproof effect on the gap between the bottom plate 4 and the window frame 1.

[0026] As Figure 2 shown, reinforcing ribs 15 are evenly distributed on the side of the boss 6. The reinforcing ribs 15 improve the structural strength of the boss 6, ensure that its thread is not easily deformed, and the connection is reliable.

[0027] The connection requirements of the middle mullion 2 using the connection block 3 are as follows:

[0028] 1. According to the window size of the design cutting list, determine the installation position of the middle mullion 2 of the doors and windows, and make installation marks at the matching positions of the frame and the connection block 3. The size of the connection block 3 should match the profile outer dimension, and the surface should have anti-corrosion treatment. Check the assembly gap between the special connection block 3 and the end of the middle mullion 2. It is appropriate that the two walls of the connection block 3 are clamped with the two walls of the glass groove of the middle mullion 2 without fitting gap.

[0029] 2. Self-tapping and self-drilling screws are used for all screws. Fix the connection block 3 on the lining steel 7 of the middle mullion 2. After fixing, the connection block 3 should be firm without shaking. According to the positioning marks of the window frame 1, find the installation position of the middle mullion 2, accurately align it, and the allowable deviation shall not be greater than 0.5 mm. Fix the connection block 3 on the window frame 1.

[0030] 3. When the connecting block 3 is fixed, it should be reliably connected to the reinforcing steel. When the frame and the middle mullion 2 are externally screwed, the number of connecting screws shall not be less than 4 to ensure the strength of the connecting block 3. The bottom of the window frame 1 needs to be fastened to the connecting block 3 with M8 screws. To ensure the sealing performance of the doors and windows, a sealing cushion block 14 is provided at the bottom of the connecting block 3. After the screwing process of the middle mullion 2 is completed, glue needs to be filled at the screwed joint to ensure the sealing effect after screwing.

[0031] By adding a connecting block 3 at the bottom of the middle mullion 2, the welding connection method is replaced, realizing the rigid connection between the window frame 1 and the middle mullion 2, ensuring that the connection strength is reliable enough, and avoiding the deformation of the middle mullion 2 and the cracking of the corners; the structure of the connecting block 3 is simple, which is convenient for processing and manufacturing. It occupies a small volume, and the hole positions on the connecting plate 5 are reasonably designed, avoiding the interference of screw connections.

[0032] 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 plastic-steel door and window stile connection structure, comprising a window frame (1), wherein the stile (2) is arranged on the window frame (1), and characterized in that: A connecting block (3) is connected between the window frame (1) and the middle stile (2), and the connecting block (3) comprises a bottom plate (4) and a connecting plate (5), the bottom plate (4) and the window frame (1) are connected by a first screw (8), and the connecting plate (5) and the middle stile (2) are connected by a second screw (9); lining steel (7) is provided inside the window frame (1) and the middle stile (2), the first screw (8) is connected to the lining steel (7) inside the window frame (1), and the second screw (9) is connected to the lining steel (7) inside the middle stile (2).

2. The plastic-steel door and window stile connection structure according to claim 1, characterized in that: The connecting plates (5) are arranged at both ends of the connecting block (3), the bottom plate (4) is arranged horizontally, the connecting block (3) is arranged perpendicular to the bottom plate (4), the connecting plates (5) and the bottom plate (4) form an L-shaped structure, the connecting plates (5) are in contact with the outer side of the middle stile (2), and the bottom end of the middle stile (2) is located between the connecting plates (5).

3. The plastic-steel door and window stile connection structure according to claim 2, characterized in that: The connecting plate (5) is provided with a first connecting hole (11) and a second connecting hole (12), and the first connecting hole (11) and the second connecting hole (12) are both matched with the first screw (8); the two ends of the bottom plate (4) are provided with a third connecting hole (13), and the second screw (9) is matched with the third connecting hole (13), and the third connecting holes (13) are arranged in pairs.

4. The plastic-steel door and window stile connection structure according to claim 3, characterized in that: The first connection hole (11) is higher than the second connection hole (12), and a line connecting the first connection hole (11) and the second connection hole (12) is arranged obliquely.

5. The plastic-steel door and window stile connection structure according to any one of claims 1 to 4, characterized in that: A boss (6) is provided in the middle of the bottom plate (4), a threaded hole (16) is provided on the boss (6), the boss (6) is located inside the middle stile (2), and the bottom plate (4) and the window frame (1) are further connected by a third screw (10), the third screw (10) passes through the bottom of the window frame (1) and cooperates with the threaded hole (16).

6. The plastic-steel door and window stile connection structure according to claim 5, characterized in that: A sealing gasket (14) is provided between the bottom plate (4) and the window frame (1), and the size of the sealing gasket (14) is adapted to that of the bottom plate (4).

7. The plastic-steel door and window stile connection structure according to claim 5, characterized in that: The side of the boss (6) is evenly distributed with reinforcing ribs (15).

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