Mullion structure and casement window
By designing the insertion slots and flanges of the mullion structure, the problem of different mullion profiles required for different fan material thicknesses was solved, thereby improving the versatility of the profiles and the connection strength, and reducing inventory costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN SANSHUIFENGLV ALUMINIUMINDUSTRY CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-15
AI Technical Summary
In the existing technology, the renovation of fixed doors and windows requires mullion profiles of different specifications, resulting in high inventory pressure. Moreover, the existing pseudo mullion profiles have strong limitations and cannot meet the needs of different sash material thicknesses.
A mullion structure is designed by setting insertion slots and insertion edges on the first and second profiles and adjusting their relative positions using fixing units to adapt to different fan material thicknesses. Only two types of profiles are needed to meet different specification requirements, reducing inventory costs.
It effectively improved the utilization rate of profiles, reduced inventory costs and stocking pressure, simplified the modification process, and improved the versatility and connection strength of profiles.
Smart Images

Figure CN224244688U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of door and window structures, specifically to a mullion structure and a casement window. Background Technology
[0002] Fixed doors and windows sometimes need to be modified according to the user's wishes. For example, fixed doors and windows on a fully enclosed balcony may need to be changed to casement windows later due to ventilation issues. Because the window sash area is large, it usually needs to be modified into a double-opening casement window or a single-sided casement window. When the original structure is made into a double-opening casement window without a mullion, the double-opening false mullion is a one-piece form, and different sizes of door sashes need to be matched with special mullions.
[0003] like Figure 1 As shown, the original structure had fixed dimensions when producing the profiles. Due to the wide variety of window sash widths on the market and the limitations of existing false mullion profiles, different sash thicknesses require different width mullion profiles. The renovation manufacturer needs to prepare a wide variety of false mullion profiles, and the inventory pressure is high. Utility Model Content
[0004] Therefore, to address the problem of needing to use mullion profiles of different widths due to varying sash thicknesses, and the resulting high inventory pressure on modification manufacturers due to the need to prepare a wide variety of dummy mullion profiles, this utility model provides a mullion structure and casement window, the specific technical solution of which is as follows:
[0005] A mullion structure, comprising:
[0006] The first profile has an installation groove and a plug groove;
[0007] The second profile is provided with a plug-in edge that is adapted to the plug-in groove, and a first side edge and a second side edge extending along both sides of the end face of the plug-in edge. The first side edge and the second side edge are respectively provided with a first sealing groove and a second sealing groove.
[0008] The above-mentioned mullion structure, after the first profile is fixedly installed, adjusts the depth of the insertion edge into the insertion slot and uses the fixing unit to fix the relative position of the two, thereby adapting to different fan material thicknesses and effectively improving the utilization rate; the modification manufacturer only needs to prepare two profiles, the first profile and the second profile, which greatly reduces inventory costs and reduces inventory pressure.
[0009] Furthermore, the insertion slot is a rectangular slot, and the insertion edge is a rectangular body adapted to the rectangular slot.
[0010] Furthermore, there is a connection gap between the insertion edge and the insertion slot, and the connection gap is less than 0.6 mm.
[0011] On the other hand, a casement window includes a first window body, a second window body, and a mullion structure; the first window body is provided with a first groove edge adapted to the first sealing groove; the second window body is provided with a second groove edge adapted to the second sealing groove.
[0012] Furthermore, the first window includes a third profile, a fourth profile, and a connecting strip unit that connects the third profile and the fourth profile.
[0013] Furthermore, the third profile is provided with a third side edge that is adapted to the mounting groove.
[0014] Furthermore, the connecting strip unit includes a first connecting strip and a second connecting strip; the mounting groove is provided with a sealing strip, and the second connecting strip is provided with a sealing extension edge extending to the sealing strip.
[0015] Furthermore, the mullion structure also includes a fixing unit; the fixing unit includes a fixing screw and a fixing nut; the first profile is provided with a connecting elongated hole, and the second profile is provided with a connecting mounting hole adapted to the connecting elongated hole; the connecting end of the fixing screw passes through the mounting hole and the connecting elongated hole in sequence until it is connected to the fixing nut.
[0016] Furthermore, the fixing nut is a T-nut, and the fixing screw is an umbrella screw; the T-nut has an internal threaded cylinder that passes through the mounting hole and connects to the elongated hole, and a T-shaped head that presses against the profile surface of the first profile; the umbrella screw has a threaded post that matches the internal threaded cylinder, and an umbrella-shaped head that matches the profile surface of the second profile.
[0017] Furthermore, the second profile is provided with at least two spaced-apart connection mounting holes. Attached Figure Description
[0018] The present invention can be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale; rather, the focus is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.
[0019] Figure 1 This is a structural cross-sectional view of the existing mullion structure;
[0020] Figure 2 This is a cross-sectional view of the mullion structure according to an embodiment of the present invention. Figure 1 ;
[0021] Figure 3 This is a cross-sectional view of the mullion structure according to an embodiment of the present invention. Figure 2 ;
[0022] Figure 4This is a cross-sectional view of the casement window according to an embodiment of the present invention. Figure 1 ;
[0023] Figure 5 This is a cross-sectional view of the casement window according to an embodiment of the present invention. Figure 2 ;
[0024] Figure 6 This is a schematic diagram of the mullion structure according to an embodiment of the present invention.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. First profile; 2. Second profile; 3. First window; 4. Second window; 5. Mullion structure; 6. Fixed unit;
[0027] 11. Mounting slot; 12. Plug-in slot;
[0028] 21. Insertion flange; 22. First side flange; 23. Second side flange; 24. First sealing groove; 25. Second sealing groove;
[0029] 101. Connecting elongated hole; 201. Mounting hole;
[0030] 31. First groove edge; 32. Third profile; 33. Fourth profile; 34. Connecting strip unit; 36. Third side edge;
[0031] 41. The edge of the second groove;
[0032] 61. Fixing screw; 62. Fixing nut. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit its scope of protection.
[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0036] In this utility model, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.
[0037] On the one hand, such as Figure 2 and Figure 3 As shown, a mullion structure in one embodiment of the present invention includes:
[0038] The first profile 1 is provided with a mounting groove 11 and a plug groove 12, wherein the mounting groove 11 is used for fixing or installing a top adhesive strip;
[0039] The second profile 2 is provided with an insertion edge 21 adapted to the insertion groove 12, and a first side edge 22 and a second side edge 23 extending along both sides of the end face of the insertion edge 21. The first side edge 22 and the second side edge 23 are respectively provided with a first sealing groove 24 and a second sealing groove 25. Specifically, both the first sealing groove 24 and the second sealing groove 25 are provided with sealing strips (not shown in the figure).
[0040] The above-mentioned mullion structure, after the first profile 1 is fixedly installed, adjusts the depth of the insertion edge 21 into the insertion slot 12, and uses the fixing unit to fix the relative position of the two, thereby adapting to different fan material thicknesses and effectively improving the utilization rate; the modification manufacturer only needs to prepare two types of profiles, the first profile 1 and the second profile 2, which greatly reduces inventory costs and reduces inventory pressure.
[0041] In one embodiment, the insertion slot 12 is a rectangular slot, and the insertion edge 21 is a rectangular body adapted to the rectangular slot. Thus, the rectangular body has high structural rigidity, and the fit strength between the rectangular body and the rectangular slot meets the usage requirements; simultaneously, the cavity within the rectangular body facilitates the insertion of connecting structures at both ends of the mullion structure for fixed connection with fixed doors and windows.
[0042] In one embodiment, a mating gap exists between the mating edge 21 and the mating slot 12, and the mating gap is less than 0.6 mm. Thus, by limiting the size of the mating gap between the mating edge 21 and the mating slot 12, the connection strength is ensured.
[0043] On the other hand, such as Figure 4 and Figure 5As shown, a casement window in one embodiment of the present invention includes a first window body 3, a second window body 4, and a mullion structure 5; the first window body 3 is provided with a first groove edge 31 adapted to the first sealing groove 24; the second window body 4 is provided with a second groove edge 41 adapted to the second sealing groove 25. Specifically, the first window body 3 and / or the second window body 4 are casement window structures.
[0044] In one embodiment, the first window 3 includes a third profile 32, a fourth profile 33, and a connecting strip unit 34 connecting the third profile 32 and the fourth profile 33. Thus, the overall thickness of the first window 3 can be adjusted by varying the length of the connecting strip unit 34.
[0045] In one embodiment, the third profile 32 is provided with a third side edge 36 that is adapted to the mounting groove 11. Thus, by installing a top-mounted adhesive strip on the third side edge 36, the structural seal between the two is improved, enhancing waterproofing and noise reduction capabilities.
[0046] In one embodiment, the connecting strip unit 34 includes a first connecting strip and a second connecting strip; the mounting groove 11 is provided with a sealing strip, and the second connecting strip has a sealing extension edge extending to the sealing strip. Thus, a sealed connection structure is formed by the sealing extension edge on the second connecting strip contacting the sealing strip, improving the structural sealing between the two and enhancing waterproofing and noise reduction functions.
[0047] In one embodiment, the mullion structure 5 further includes a fixing unit 6; the fixing unit 6 includes a fixing screw 61 and a fixing nut 62; the first profile 1 is provided with a connecting elongated hole 101, and the second profile 2 is provided with a connecting mounting hole 201 adapted to the connecting elongated hole 101; the connecting end of the fixing screw 61 passes through the mounting hole 201 and the connecting elongated hole 101 in sequence until it is connected to the fixing nut 62. Thus, by moving the fixing screw 61 relative to the connecting elongated hole 101, the depth of the insertion edge 21 into the insertion slot 12 is adjusted, thereby adjusting the overall thickness of the mullion structure 5.
[0048] In one embodiment, the fixing nut 62 is a T-nut, and the fixing screw 61 is an umbrella screw. The T-nut has an internally threaded cylinder that passes through the mounting hole 201 and the connecting elongated hole 101, and a T-shaped head that presses against the profile surface of the first profile 1. The umbrella screw has a threaded post that matches the internally threaded cylinder and an umbrella-shaped head that matches the profile surface of the second profile 2. When using automatic screws for fixing, the length of the threaded connection between the automatic screw and the profile is too small, resulting in low connection strength and poor structural stability. Thus, after the T-shaped head passes through the connecting elongated hole 101 and the T-nut is rotated, the two sides of the T-shaped head press against the profile surface of the first profile 1. By screwing the threaded post into the internally threaded cylinder and the umbrella-shaped head pressing against the profile surface of the second profile 2, the first profile 1 and the second profile 2 are tightly connected.
[0049] In one embodiment, the second profile 2 is provided with at least two spaced-apart connection mounting holes 201. Thus, for different window thicknesses, the installation position of the sealing strip is different. By screwing the fixing screw 61 into the connection mounting holes 201 at different positions, the problem of air leakage and water leakage caused by interference is avoided. At the same time, the excess connection mounting holes 201 and the exposed connection elongated holes 101 are covered with sealant or tape.
[0050] In one embodiment, both the first window 3 and the second window 4 are plan windows.
[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0052] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A mullion structure, characterized in that, include: The first profile (1) is provided with a mounting groove (11) and a plug groove (12); The second profile (2) is provided with a plug-in edge (21) adapted to the plug-in groove (12), and a first side edge (22) and a second side edge (23) extending along both sides of the end face of the plug-in edge (21). The first side edge (22) and the second side edge (23) are respectively provided with a first sealing groove (24) and a second sealing groove (25).
2. The mullion structure according to claim 1, characterized in that, The insertion slot (12) is a rectangular slot, and the insertion edge (21) is a rectangular body that fits the rectangular slot.
3. The mullion structure according to claim 2, characterized in that, There is a connection gap between the insertion edge (21) and the insertion slot (12), and the connection gap is less than 0.6 mm.
4. A casement window, characterized in that, It includes a first window (3), a second window (4), and a mullion structure (5) as described in any one of claims 1 to 3; The first window (3) is provided with a first groove edge (31) that is adapted to the first sealing groove (24); The second window (4) is provided with a second groove edge (41) that is adapted to the second sealing groove (25).
5. A casement window according to claim 4, characterized in that, The first window (3) includes a third profile (32), a fourth profile (33), and a connecting strip unit (34) connecting the third profile (32) and the fourth profile (33).
6. A casement window according to claim 5, characterized in that, The third profile (32) is provided with a third side edge (36) that is adapted to the mounting groove (11).
7. A casement window according to claim 5, characterized in that, The connecting strip unit (34) includes a first connecting strip and a second connecting strip; The mounting groove (11) is provided with a sealing strip, and the second connecting strip is provided with a sealing extension edge extending to the sealing strip.
8. A casement window according to claim 4, characterized in that, The mullion structure (5) also includes a fixing unit (6); The fixing unit (6) includes a fixing screw (61) and a fixing nut (62); The first profile (1) is provided with a connecting elongated hole (101), and the second profile (2) is provided with a connecting mounting hole (201) that is adapted to the connecting elongated hole (101). The connecting end of the fixing screw (61) passes through the mounting hole (201) and the connecting elongated hole (101) in sequence until it is connected to the fixing nut (62).
9. A casement window according to claim 8, characterized in that, The fixing nut (62) is a T-nut, and the fixing screw (61) is an umbrella screw; The T-nut is provided with an internally threaded cylinder that passes through the mounting hole (201) and the connecting elongated hole (101), and a T-shaped head that presses against the profile surface of the first profile (1); The umbrella screw is provided with a threaded post adapted to the internal threaded cylinder and an umbrella head adapted to the profile surface of the second profile (2).
10. A casement window according to claim 8, characterized in that, The second profile (2) is provided with at least two spaced-apart connection mounting holes (201).