Transom reinforcement structure and panoramic sliding window

Abstract

The utility model discloses a mullion reinforcing structure and panorama sliding sash belongs to door and window technical field. Mullion reinforcing structure includes track section bar, window frame section bar, mullion section bar and reinforcing component. Window frame section bar includes integrative first fixed part and second fixed part, and mullion section bar is located between first fixed part and track section bar, and mullion section bar, first fixed part and track section bar are used to install glass, and reinforcing component includes reinforcing square tube, track footing and window frame footing, and track footing and window frame footing are detachably arranged on track section bar and second fixed part respectively, and reinforcing square tube is arranged between track footing and window frame footing to support track section bar and second fixed part. The utility model discloses a mullion reinforcing structure improves its strength, reliability and maintainability through the optimization of mullion design and connecting mode.

Description

Technical Field

[0001] This utility model relates to the field of door and window technology, and in particular to a mullion-reinforced structure and a panoramic sliding window. Background Technology

[0002] With the booming development of the aluminum alloy door and window industry, panoramic sliding windows have been widely used in various buildings such as residential, office, and commercial spaces due to their expansive view, smooth opening and closing experience, and excellent spatial adaptability. The mullion, as the core supporting component in the sliding window structural system, directly affects the overall stability, wind pressure resistance, and service life of the window.

[0003] However, traditional mullion designs present numerous problems when dealing with large windows and complex environments with high wind pressure. For example, ordinary aluminum alloy mullions rely solely on the wall thickness and cavity structure of the profile itself for support. When used in large sliding windows or areas with high wind pressure, they are prone to bending and deformation, leading to window sash jamming, seal failure, and even glass breakage. Some manufacturers use built-in aluminum reinforcing ribs, but their bending stiffness is still insufficient to meet the wind pressure resistance requirements of large windows and doors. Furthermore, many mullion reinforcement designs on the market present maintenance challenges. These structures are completely enclosed within the profile; once internal components rust or become damaged, destructive disassembly is required for repairs, significantly increasing maintenance and time costs and causing unnecessary economic losses and inconvenience for users. Utility Model Content

[0004] The purpose of this utility model is to provide a mullion reinforcement structure and a panoramic sliding window, which improves the strength, reliability and maintainability of the mullion by optimizing its design and connection method.

[0005] In a first aspect, this utility model provides a mullion reinforcement structure, comprising:

[0006] Track profiles;

[0007] Window frame profile, including an integrally formed first fixing part and second fixing part;

[0008] A mullion profile is disposed between the first fixing part and the track profile, and the space between the mullion profile, the first fixing part and the track profile is used for installing glass;

[0009] The reinforcing component includes a reinforcing square tube, a track base, and a window frame base. The track base and the window frame base are detachably mounted on the track profile and the second fixing part, respectively. The reinforcing square tube is located between the track base and the window frame base to support the track profile and the second fixing part.

[0010] The mullion reinforcement structure provided by this utility model, through the tight fit between the track base and window frame base and the reinforcing square tube, forms a continuously stressed frame structure that effectively supports the second fixing part of the track profile and window frame profile. This structure can reasonably distribute the external force, effectively reducing the risk of deformation caused by external forces, thereby enhancing the overall strength and deformation resistance of the mullion structure. In addition, the track base and window frame base are detachably set on the track profile and the second fixing part, respectively. This detachable connection also provides convenience for later adjustment and maintenance. Users can quickly disassemble and assemble the mullion reinforcement structure according to actual needs without destructive removal, greatly reducing maintenance costs and time costs.

[0011] Furthermore, the reinforcing square tube is provided with mounting holes penetrating both opposite ends, the track foot includes an integrally formed first mounting plate and a first mounting block, the window frame foot includes an integrally formed second mounting plate and a second mounting block, the first mounting plate is provided with a first fixing hole for inserting fixing screws into the track profile, the second mounting plate is provided with a second fixing hole for inserting fixing screws into the second fixing part, and the first mounting block and the second mounting block can be respectively inserted into the opposite ends of the mounting holes.

[0012] By employing the above technical solution, through mounting holes extending to opposite ends of the reinforcing square tube, and by allowing the first mounting block of the track foot and the second mounting block of the window frame foot to be inserted into the opposite ends of these mounting holes, a tight fit is achieved between the reinforcing square tube and the track foot and window frame foot. This effectively transmits and disperses stress, preventing connection failures caused by localized stress concentration. Furthermore, the first fixing hole on the first mounting plate and the second fixing hole on the second mounting plate are used for inserting fixing screws, which are then fixedly connected to the track profile and window frame profile, respectively, ensuring the reliability of the entire mullion reinforcement structure during long-term use.

[0013] Furthermore, the first mounting block is provided with a first connecting through hole, the second mounting block is provided with a second connecting through hole, and the reinforcing square tube is provided with a third connecting through hole and a fourth connecting through hole. The first connecting through hole can be aligned with the third connecting through hole for a fixing screw to pass through and fix it, and the second connecting through hole can be aligned with the fourth connecting through hole for a fixing screw to pass through and fix it.

[0014] By adopting the above technical solution, the design of the connecting through holes creates a tighter integrated structure between the track base, the reinforcing square tube, and the window frame base. This integrity not only improves the bending stiffness of the mullion but also enhances its stability under high wind pressure, effectively preventing mullion deformation or damage caused by wind pressure.

[0015] Furthermore, the reinforcing component also includes a window frame pad, which is located on the side of the window frame profile facing away from the window frame base. The window frame pad has a first connecting hole and a second connecting hole. The first connecting hole is used for a fixing screw to pass through and fix to the window frame profile. The second connecting hole can be aligned with the second fixing hole so that the fixing screw can pass through the second fixing hole and the second connecting hole in sequence to be inserted into the wall for fixing.

[0016] Using the above technical solution, the window frame pad is fixed to the window frame profile through the first connecting hole and aligned with the second fixing hole of the window frame base through the second connecting hole, allowing the fixing screws to pass through these holes and be inserted into the wall for fixation. This design significantly enhances the connection stability between the window frame base, the window frame profile, and the wall, ensuring the sturdiness of the window frame during long-term use.

[0017] Furthermore, the reinforced square tube is provided with a third fixing hole, which is used for fixing screws to pass through and fix to the mullion profile.

[0018] By adopting the above technical solution, the reinforcing square tube is firmly fixed to the mullion profile with fixing screws, which further disperses the stress and enables the mullion profile to maintain better stability when subjected to large external forces (such as wind pressure, frequent sliding, etc.), reducing problems such as sealing failure and glass breakage caused by deformation, thereby extending the overall service life of the sliding window.

[0019] Furthermore, the number of the third fixing holes is at least two, and the at least two third fixing holes are spaced apart along the height direction on the reinforcing square tube.

[0020] By employing the above technical solution and setting multiple fixing holes at intervals along the height direction, stress can be more evenly distributed to multiple connection points, avoiding structural deformation or damage caused by localized stress concentration. This stress dispersion design significantly improves the bending stiffness of the mullion profile and the overall structural deformation resistance, extending the service life of the sliding window.

[0021] Furthermore, the mullion profile has a first side plate and a second side plate spaced apart on the side facing the second fixing part, and the reinforcing square tube is disposed between the first side plate and the second side plate.

[0022] By adopting the above technical solution, the first and second side plates not only serve as shielding elements but also provide additional physical protection for the reinforced square tube. Containing the reinforced square tube internally effectively prevents it from being corroded by the external environment (such as rain, dust, and ultraviolet rays), extending its service life and thus further improving the reliability and durability of the entire mullion reinforcement structure.

[0023] Furthermore, it also includes a mullion cover plate, wherein a first locking block is provided on the side of the first side plate facing the second side plate, a second locking block is provided on the side of the second side plate facing the first side plate, and a third locking block and a fourth locking block are respectively provided on opposite sides of the mullion cover plate, wherein the first locking block can engage with the third locking block, and the second locking block can engage with the fourth locking block.

[0024] By adopting the above technical solution, the mullion cover plate is set between the first side plate and the second side plate, so that the reinforcing square tube can be completely covered. This not only further improves the aesthetics of the mullion structure, but also provides comprehensive protection for the reinforcing square tube, preventing external factors such as dust and moisture from corroding the internal structure (e.g., fixing screws).

[0025] Furthermore, it also includes an upper cover plate and a lower cover plate. The upper cover plate is fixed to the track profile by fixing screws to cover the track feet; the lower cover plate is fixed to the window frame profile by fixing screws to cover the window frame feet.

[0026] Using the above technical solution, the upper and lower cover plates are used to cover the track base and window frame base, respectively, completely concealing the connection between the track profile and the window frame profile, thus avoiding the visual abruptness that might result from exposed base components. Furthermore, the upper and lower cover plates effectively prevent rainwater, dust, and other external factors from corroding the track base and window frame base. This protective function extends the service life of the base components and reduces corrosion or damage caused by prolonged exposure.

[0027] Secondly, this utility model provides a panoramic sliding window, comprising:

[0028] Any of the above mullion reinforcement structures;

[0029] The sliding window is movable and located on the side of the track profile facing away from the window frame profile.

[0030] As can be seen from the above, the mullion reinforcement structure provided by this utility model, through the tight cooperation between the track base and window frame base and the reinforcing square tube, forms a continuously stressed frame structure that effectively supports the second fixing part of the track profile and window frame profile. This structure can reasonably distribute the external force, effectively reduce the risk of deformation caused by external forces, thereby enhancing the overall strength and deformation resistance of the mullion structure. In addition, the track base and window frame base are detachably set on the track profile and the second fixing part, respectively. This detachable connection also provides convenience for later adjustment and maintenance. Users can quickly disassemble and assemble the mullion reinforcement structure according to actual needs without destructive removal, greatly reducing maintenance costs and time costs.

[0031] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing embodiments of this application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a mullion reinforcement structure proposed in this utility model.

[0033] Figure 2 This is an exploded structural diagram of a mullion reinforcement structure proposed in this utility model.

[0034] Figure 3 A schematic diagram of a mullion reinforcement structure for installing a mullion cover plate, as proposed for utility model.

[0035] Figure 4 This is a schematic cross-sectional view of the vertical direction of a mullion reinforcement structure proposed in this utility model.

[0036] Figure 5 This is a schematic cross-sectional view of the horizontal direction of a mullion reinforcement structure proposed in this utility model.

[0037] Figure 6 This is a schematic diagram of the structure of the mullion reinforcement structure for installing the upper and lower cover plates.

[0038] In the attached diagram: 100, track profile; 200, window frame profile; 210, first fixing part; 220, second fixing part; 300, mullion profile; 310, first side plate; 311, first locking block; 320, second side plate; 321, second locking block; 400, reinforcing component; 410, reinforcing square tube; 411, mounting hole; 412, third connecting through hole; 413, fourth connecting through hole; 414, third fixing hole; 420, track base; 421. 422. First mounting plate; 423. First fixing hole; 424. First connecting through hole; 430. Window frame base; 431. Second mounting plate; 432. Second mounting block; 433. Second fixing hole; 434. Second connecting through hole; 440. Window frame pad; 441. First connecting hole; 442. Second connecting hole; 500. Mullion cover plate; 510. Third locking block; 520. Fourth locking block; 600. Upper cover plate; 700. Lower cover plate. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0041] The mullion reinforcement structure disclosed in this utility model is mainly used in panoramic sliding windows. By optimizing the design and connection method of the mullion, its strength, reliability and maintainability are improved.

[0042] Reference Appendix Figure 1 Appendix Figure 2 In one embodiment, the mullion reinforcement structure includes a track profile 100, a window frame profile 200, a mullion profile 300, and a reinforcement component 400. The window frame profile 200 includes an integrally formed first fixing part 210 and a second fixing part 220; the mullion profile 300 is disposed between the first fixing part 210 and the track profile 100, and the space between the mullion profile 300, the first fixing part 210, and the track profile 100 is used for installing glass; the reinforcement component 400 includes a reinforcing square tube 410, a track base 420, and a window frame base 430, the track base 420 and the window frame base 430 being detachably disposed on the track profile 100 and the second fixing part 220, respectively, and the reinforcing square tube 410 being disposed between the track base 420 and the window frame base 430 to support the track profile 100 and the second fixing part 220.

[0043] As can be seen from the above, the mullion reinforcement structure provided by this utility model, through the close cooperation between the track base 420 and the window frame base 430 and the reinforcing square tube 410, forms a continuously stressed frame structure that effectively supports the second fixing part 220 of the track profile 100 and the window frame profile 200. This structure can reasonably distribute the external force, effectively reduce the risk of deformation caused by external forces, thereby enhancing the overall strength and deformation resistance of the mullion structure. In addition, the track base 420 and the window frame base 430 are detachably set on the track profile 100 and the second fixing part 220, respectively. This detachable connection also provides convenience for later adjustment and maintenance. Users can quickly disassemble and assemble the mullion reinforcement structure according to actual needs without destructive dismantling, greatly reducing maintenance costs and time costs.

[0044] Reference Appendix Figure 2 In one embodiment, the reinforced square tube 410 is provided with mounting holes 411 penetrating both ends. The track foot 420 includes an integrally formed first mounting plate 421 and a first mounting block 422. The window frame foot 430 includes an integrally formed second mounting plate 431 and a second mounting block 432. The first mounting plate 421 is provided with a first fixing hole 423 for inserting fixing screws into the track profile 100. The second mounting plate 431 is provided with a second fixing hole 433 for inserting fixing screws into the second fixing part 220. The first mounting block 422 and the second mounting block 432 can be inserted into the opposite ends of the mounting holes 411 respectively.

[0045] It is worth noting that there can be multiple first fixing holes 423 and multiple second fixing holes 433. Multiple first fixing holes 423 are located on opposite sides of the first mounting block 422, and multiple second fixing holes 433 are located on opposite sides of the second mounting block 432. For example, there can be eight first fixing holes 423, with four on one side of the first mounting block 422 and the remaining four on the other side. The second fixing holes 433 are similarly located and will not be described further here. Fixing holes that match the first fixing holes 423 and the second fixing holes 433 can be provided on the second fixing part 220 and the track profile 100 to facilitate the insertion of fixing screws.

[0046] By adopting the above technical solution, mounting holes 411 penetrating both ends of the reinforcing square tube 410 are provided, allowing the first mounting block 422 of the track foot 420 and the second mounting block 432 of the window frame foot 430 to be inserted into the opposite ends of the mounting holes 411 respectively. This achieves a tight fit between the reinforcing square tube 410 and the track foot 420 and window frame foot 430, effectively transmitting and dispersing stress and avoiding connection failure due to local stress concentration. Furthermore, the first fixing hole 423 on the first mounting plate 421 and the second fixing hole 433 on the second mounting plate 431 are used for inserting fixing screws, which are then fixedly connected to the track profile 100 and the window frame profile 200 respectively, ensuring the reliability of the entire mullion reinforcement structure during long-term use.

[0047] In one embodiment, the first mounting block 422 is provided with a first connecting through hole 424, the second mounting block 432 is provided with a second connecting through hole 434, and the reinforcing square tube 410 is provided with a third connecting through hole 412 and a fourth connecting through hole 413. The first connecting through hole 424 can be aligned with the third connecting through hole 412 for fixing screws to pass through and fix, and the second connecting through hole 434 can be aligned with the fourth connecting through hole 413 for fixing screws to pass through and fix.

[0048] It is worth noting that there can be multiple first connecting through holes 424 and second connecting through holes 434. For example, there can be 4 first connecting through holes 424 and 8 second connecting through holes 434. Then the number of third connecting through holes 412 is equal to the number of first connecting through holes 424, which is 4, and the number of fourth connecting through holes 413 is equal to the number of second connecting through holes 434, which is 8.

[0049] By adopting the above technical solution, the design of the connecting through hole creates a tighter integrated structure between the track base 420, the reinforcing square tube 410, and the window frame base 430. This integration not only improves the bending stiffness of the mullion but also enhances its stability under high wind pressure, effectively preventing deformation or damage to the mullion caused by wind pressure.

[0050] Reference Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 In one embodiment, the reinforcing component 400 further includes a window frame pad 440, which is disposed on the side of the window frame profile 200 facing away from the window frame base 430. The window frame pad 440 is provided with a first connecting hole 441 and a second connecting hole 442. The first connecting hole 441 is used for a fixing screw to pass through and fix to the window frame profile 200. The second connecting hole 442 can be aligned with the second fixing hole 433 so that the fixing screw passes through the second fixing hole 433 and the second connecting hole 442 in sequence to be inserted into the wall for fixing.

[0051] Using the above technical solution, the window frame pad 440 is fixed to the window frame profile 200 through the first connecting hole 441, and aligned with the second fixing hole 433 of the window frame base 430 through the second connecting hole 442, so that the fixing screws can pass through these holes in sequence and be inserted into the wall for fixing. This design significantly enhances the connection stability between the window frame base 430, the window frame profile 200 and the wall, ensuring the sturdiness of the window frame during long-term use.

[0052] Reference Appendix Figure 3 In one embodiment, the reinforcing square tube 410 is provided with a third fixing hole 414, which is used for fixing screws to pass through and fix to the mullion profile 300.

[0053] By adopting the above technical solution, the reinforcing square tube 410 is firmly fixed to the mullion profile 300 by fixing screws, which further disperses the stress and enables the mullion profile 300 to maintain better stability when subjected to large external forces (such as wind pressure, frequent sliding, etc.), reducing problems such as sealing failure and glass breakage caused by deformation, thereby extending the overall service life of the sliding window.

[0054] In one embodiment, the number of third fixing holes 414 is at least two, and at least two third fixing holes 414 are spaced apart along the height direction on the reinforcing square tube 410.

[0055] By employing the above technical solution and setting multiple fixing holes at intervals along the height direction, stress can be more evenly distributed to multiple connection points, avoiding structural deformation or damage caused by localized stress concentration. This stress dispersion design significantly improves the bending stiffness of the mullion profile 300 and the overall structural deformation resistance, extending the service life of the sliding window.

[0056] Reference Appendix Figure 5 In one embodiment, the mullion profile 300 has a spaced first side plate 310 and a second side plate 320 on the side facing the second fixing part 220, and the reinforcing square tube 410 is disposed between the first side plate 310 and the second side plate 320.

[0057] By adopting the above technical solution, the first side plate 310 and the second side plate 320 not only serve as shields but also provide additional physical protection for the reinforcing square tube 410. Containing the reinforcing square tube 410 internally effectively prevents it from being corroded by the external environment (such as rainwater, dust, ultraviolet rays, etc.), extending the service life of the reinforcing square tube 410, thereby further improving the reliability and durability of the entire mullion reinforcement structure.

[0058] In one embodiment, a mullion cover plate 500 is also included. A first locking block 311 is provided on the side of the first side plate 310 facing the second side plate 320, and a second locking block 321 is provided on the side of the second side plate 320 facing the first side plate 310. A third locking block 510 and a fourth locking block 520 are respectively provided on opposite sides of the mullion cover plate 500. The first locking block 311 can engage with the third locking block 510, and the second locking block 321 can engage with the fourth locking block 520.

[0059] By adopting the above technical solution, the mullion cover plate 500 is set to engage between the first side plate 310 and the second side plate 320, so that the reinforcing square tube 410 can be completely covered. This not only further enhances the aesthetics of the mullion structure, but also provides comprehensive protection for the reinforcing square tube 410, preventing external factors such as dust and moisture from corroding the internal structure (e.g., fixing screws).

[0060] Reference Appendix Figure 6 In one embodiment, the system also includes an upper cover plate 600 and a lower cover plate 700. The upper cover plate 600 is mounted on the track profile 100 by fixing screws to cover the track foot 420. The lower cover plate 700 is mounted on the window frame profile 200 by fixing screws to cover the window frame foot 430.

[0061] Using the above technical solution, the upper cover plate 600 and the lower cover plate 700 are used to cover the track base 420 and the window frame base 430, respectively, so that the connection between the track profile 100 and the window frame profile 200 is completely hidden, avoiding the visual abruptness that may be caused by exposed base components. In addition, the upper cover plate 600 and the lower cover plate 700 can also effectively prevent external factors such as rainwater and dust from corroding the track base 420 and the window frame base 430. This protective function can extend the service life of the base components and reduce corrosion or damage caused by long-term exposure.

[0062] This utility model also provides a panoramic sliding window, including:

[0063] Any of the above mullion reinforcement structures;

[0064] The sliding window is movable and located on the side of the track profile 100 facing away from the window frame profile 200.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A mullion reinforcement structure, characterized in that, include: Track profile (100); The window frame profile (200) includes an integrally formed first fixing part (210) and a second fixing part (220); A mullion profile (300) is disposed between the first fixing part (210) and the track profile (100), and the mullion profile (300), the first fixing part (210) and the track profile (100) are used to install glass; The reinforcing component (400) includes a reinforcing square tube (410), a track base (420), and a window frame base (430). The track base (420) and the window frame base (430) are detachably mounted on the track profile (100) and the second fixing part (220), respectively. The reinforcing square tube (410) is located between the track base (420) and the window frame base (430) to support the track profile (100) and the second fixing part (220).

2. The mullion reinforcement structure according to claim 1, characterized in that, The reinforced square tube (410) is provided with mounting holes (411) penetrating both ends. The track foot (420) includes an integrally formed first mounting plate (421) and a first mounting block (422). The window frame foot (430) includes an integrally formed second mounting plate (431) and a second mounting block (432). The first mounting plate (421) is provided with a first fixing hole (423) for inserting fixing screws into the track profile (100). The second mounting plate (431) is provided with a second fixing hole (433) for inserting fixing screws into the second fixing part (220). The first mounting block (422) and the second mounting block (432) can be inserted into the opposite ends of the mounting hole (411) respectively.

3. The mullion reinforcement structure according to claim 2, characterized in that, The first mounting block (422) is provided with a first connecting through hole (424), the second mounting block (432) is provided with a second connecting through hole (434), and the reinforcing square tube (410) is provided with a third connecting through hole (412) and a fourth connecting through hole (413). The first connecting through hole (424) can be aligned with the third connecting through hole (412) for a fixing screw to pass through and fix it, and the second connecting through hole (434) can be aligned with the fourth connecting through hole (413) for a fixing screw to pass through and fix it.

4. The mullion reinforcement structure according to claim 2, characterized in that, The reinforcing component (400) also includes a window frame pad (440), which is located on the side of the second fixing part (220) facing away from the window frame foot (430). The window frame pad (440) is provided with a first connecting hole (441) and a second connecting hole (442). The first connecting hole (441) is used for fixing screws to pass through and fix to the window frame profile (200). The second connecting hole (442) can be aligned with the second fixing hole (433) so that the fixing screws can pass through the second fixing hole (433) and the second connecting hole (442) in sequence to be inserted into the wall for fixing.

5. The mullion reinforcement structure according to claim 1, characterized in that, The reinforced square tube (410) is provided with a third fixing hole (414), which is used for fixing screws to pass through and fix to the mullion profile (300).

6. The mullion reinforcement structure according to claim 5, characterized in that, The number of the third fixing holes (414) is at least two, and at least two of the third fixing holes (414) are spaced apart along the height direction on the reinforcing square tube (410).

7. The mullion reinforcement structure according to claim 1, characterized in that, The mullion profile (300) has a first side plate (310) and a second side plate (320) spaced apart on the side facing the second fixing part (220), and the reinforcing square tube (410) is disposed between the first side plate (310) and the second side plate (320).

8. A mullion reinforcement structure according to claim 7, characterized in that, It also includes a mullion cover plate (500), a first locking block (311) is provided on the side of the first side plate (310) facing the second side plate (320), a second locking block (321) is provided on the side of the second side plate (320) facing the first side plate (310), a third locking block (510) and a fourth locking block (520) are provided on opposite sides of the mullion cover plate (500), the first locking block (311) can engage with the third locking block (510), and the second locking block (321) can engage with the fourth locking block (520).

9. A mullion reinforcement structure according to claim 1, characterized in that, It also includes an upper cover plate (600) and a lower cover plate (700). The upper cover plate (600) is fixed to the track profile (100) by fixing screws to cover the track foot (420). The lower cover plate (700) is fixed to the window frame profile (200) by fixing screws to cover the window frame foot (430).

10. A panoramic sliding window, characterized in that, include: The mullion reinforcement structure according to any one of claims 1-9; The sliding window is movably located on the side of the track profile (100) facing away from the window frame profile (200).

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