Fireproof door leaf
By using inorganic fireproof boards and flame-retardant multilayer boards in the fire door and window frame structures, combined with magnesium oxide boards, the problem of easy bending and deformation of fire door panels was solved, achieving the effects of lightweighting and cost control.
Patent Information
- Application Number
- CN202423041449.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-10
AI Technical Summary
Existing fireproof door panels are prone to bending and deformation, especially the parts with glass windows. Adding steel framing increases cost and weight, while adding wooden framing may reduce fire resistance.
The door and window frame structures are made of inorganic fireproof boards and flame-retardant multilayer boards, with magnesium oxide boards as the main fireproof material. By connecting inorganic fireproof boards to the front and back sides of the wooden frame and setting inorganic fireproof boards and reinforcing ribs in the window frame structure, a reinforced edge structure is formed to improve strength and rigidity.
While ensuring fire resistance, it reduces the possibility of bending and deformation of door panels and window frames, achieving lightweighting and cost control, and improving structural stability.
Smart Images
Figure CN223707492U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door structure technology, specifically to a fireproof door. Background Technology
[0002] Some fire doors use wooden frames, which are prone to bending and deformation, especially when glass windows are installed. Current technology typically increases the strength of the fire door by adding steel or wooden frames. However, adding steel frames is costly and significantly increases weight, while adding wooden frames can reduce the fire resistance of the door. Utility Model Content
[0003] The purpose of this invention is to provide a fireproof door leaf to mitigate or eliminate at least one of the aforementioned problems.
[0004] The present invention discloses a fireproof door leaf, comprising a door leaf body, a first panel covering and connected to the rear side of the door leaf body, and a second panel covering and connected to the front side of the door leaf body. The door leaf body includes a door leaf frame and a door leaf core panel embedded in the door leaf frame. The door leaf frame includes a rectangular frame formed by connecting four door leaf frames arranged along the four edges of the fireproof door leaf. Each of the four door leaf frames includes a first wooden frame and two first inorganic fireproof boards extending along the length direction of the first wooden frame. The two first inorganic fireproof boards are respectively connected to the front and rear sides of the first wooden frame.
[0005] Optionally, each of the two first inorganic fireproof boards includes a first connecting plate portion and a first extending plate portion. The first connecting plate portions of the two first inorganic fireproof boards are respectively attached to the front and rear sides of the first wooden frame, and the first extending plate portions of the two first inorganic fireproof boards extend inward from the first wooden frame.
[0006] Optionally, the first inorganic fireproof board is made of magnesium oxide board, the door leaf core board is made of magnesium oxide board, the first panel and the second panel are made of flame-retardant multilayer board, and the first wooden frame is made of flame-retardant multilayer board.
[0007] Optionally, the fireproof door leaf is provided with a fireproof window, the fireproof window including a window frame structure and fireproof glass installed in the window frame structure, the window frame structure including four window frame pieces arranged along the four edges of the fireproof glass, each of the four window frame pieces including a second wooden frame and two second inorganic fireproof plates extending along the length direction of the second wooden frame, the two second inorganic fireproof plates being respectively connected to the front and rear sides of the second wooden frame.
[0008] Optionally, each of the two second inorganic fireproof boards includes a second connecting plate portion and a second extending plate portion. The second connecting plate portions of the two second inorganic fireproof boards are respectively attached to the front and rear sides of the second wooden frame, and the second extending plate portions of the two second inorganic fireproof boards extend outward from the second wooden frame.
[0009] Optionally, a third inorganic fireproof board is attached to the inner side of the second wooden frame.
[0010] Optionally, the four window frame rails are connected between the first panel and the second panel.
[0011] Optionally, a wooden reinforcing rib extending along the length direction of the second wooden frame is connected to the outer surface of the second wooden frame side.
[0012] Optionally, the window frame structure further includes two pressure strip assemblies respectively connected to the front and rear sides of the window frame, with the fireproof glass sandwiched between the two pressure strip assemblies.
[0013] Optionally, the second wooden frame is made of flame-retardant multilayer board, and the second inorganic fireproof board is made of magnesium oxide board.
[0014] This utility model, through the reasonable design of the door frame and window frame structure, improves the structural stability of the fireproof door while ensuring that the fireproof door has good fire resistance, lightweight level and cost control level. Attached Figure Description
[0015] Figure 1 This is a structural schematic diagram of the fireproof door leaf described in some embodiments;
[0016] Figure 2 for Figure 1 AA section view;
[0017] Figure 3 for Figure 2 A magnified view of section C;
[0018] Figure 4 for Figure 1 BB section view;
[0019] Figure 5 for Figure 5 A magnified view of section E in the middle;
[0020] Figure 6 for Figure 2 A magnified view of section D.
[0021] Among them, 1-first panel, 2-second panel, 3-first wooden frame, 4-first inorganic fireproof board, 5-door leaf core board, 6-fireproof glass, 7-window frame, 8-glazing strip, 9-door lock, 10-peeping eye.
[0022] 701 - Second wooden frame, 702 - Second inorganic fireproof board, 703 - Third inorganic fireproof board, 704 - Wooden reinforcing rib, 801 - Pressure strip body, 802 - Pressure strip fireproof board, 803 - Fastening screw. Detailed Implementation
[0023] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.
[0024] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0025] like Figures 1 to 5 A fireproof door leaf is shown, comprising a door leaf body, a first panel 1 covering and connected to the rear side of the door leaf body, and a second panel 2 covering and connected to the front side of the door leaf body. The door leaf body includes a door leaf frame and a door leaf core panel 5 embedded in the door leaf frame. The door leaf frame includes a rectangular frame formed by connecting four door leaf side frames arranged along the four edges of the fireproof door leaf. Each of the four door leaf side frames includes a first wooden side frame 3 and two first inorganic fireproof boards 4 extending along the length direction of the first wooden side frame 3. The two first inorganic fireproof boards 4 are respectively connected to the front and rear sides of the first wooden side frame 3. By adopting the above technical solution, connecting the first inorganic fireproof boards 4 to the front and rear sides of the first wooden side frame 3, firstly, it can improve the strength and rigidity of the door leaf side frame and reduce the possibility of bending and deformation of the door leaf side frame. Secondly, by using the first inorganic fireproof boards 4 to strengthen the door leaf side frame, it can improve the fire resistance of the door leaf side frame. Thirdly, since the core panel 5 of the door leaf is usually made of fireproof material, the use of the first inorganic fireproof board 4 to strengthen the door leaf frame has a small impact on the overall weight and cost of the fireproof door leaf, ensuring that the fireproof door leaf has a good level of lightweighting and cost control.
[0026] In some embodiments, the two first inorganic fireproof boards 4 each include a first connecting plate portion and a first extending plate portion. The first connecting plate portions of the two first inorganic fireproof boards 4 are respectively attached to the front and rear sides of the first wooden frame 3, and the first extending plate portions of the two first inorganic fireproof boards 4 extend inwardly from the first wooden frame 3. By adopting the above technical solution and setting the first extending plate portion, a reinforced edge structure extending from the first wooden frame 3 can be formed, which helps to further improve the strength and rigidity of the door frame and also helps to improve the stability of the connection between the door frame and the door core panel 5.
[0027] In practice, the length of the first inorganic fireproof board 4 is the same as the length of the first wooden frame 3. The two first inorganic fireproof boards 4 are stacked and pasted on the front and back sides of the first wooden frame 3 respectively.
[0028] In practical implementation, the first inorganic fireproof board 4 can be made of inorganic fireproof materials to ensure its fire resistance. For example, the first inorganic fireproof board 4 can be made of magnesium oxide board.
[0029] In some embodiments, the door leaf core panel 5 is made of magnesium oxide board, the first panel 1 and the second panel 2 are made of flame-retardant multilayer board, and the first wooden frame 3 is made of flame-retardant multilayer board. By adopting the above technical solution, the fire resistance performance of the fireproof door leaf can be guaranteed.
[0030] In practice, the door leaf frames can be fixedly connected by screws, and the first panel 1, the second panel 2, the door leaf core board 5 and the door leaf frame can be fixedly connected by fireproof structural adhesive. The door leaf core board 5 fills the space between the first panel 1, the second panel 2 and the door leaf frame.
[0031] In some embodiments, such as Figure 1 , Figure 2 and Figure 6As shown, a fireproof window is installed on the fireproof door leaf. The fireproof window includes a window frame structure and fireproof glass 6 installed in the window frame structure. The window frame structure includes four window frame edges 7 arranged along the four edges of the fireproof glass 6. Each of the four window frame edges 7 includes a second wooden frame edge 701 and two second inorganic fireproof boards 702 extending along the length of the second wooden frame edge 701. The two second inorganic fireproof boards 702 are respectively connected to the front and rear sides of the second wooden frame edge 701. By adopting the above technical solution, the requirement for observation windows in some fireproof doors can be met by setting fireproof windows. By connecting the second inorganic fireproof boards 702 to the front and rear sides of the second wooden frame edge 701, firstly, the strength and rigidity of the window frame edge 7 can be improved, reducing the possibility of bending and deformation of the window frame edge 7, thereby reducing the possibility of bending and deformation of the fireproof door leaf, and also providing stable support for the fireproof glass 6. Secondly, by using the second inorganic fireproof boards 702 to strengthen the door leaf frame, the fire resistance performance of the window frame edge 7 can be improved. Thirdly, since the core panel 5 of the door leaf is usually made of fireproof material, the use of the second inorganic fireproof board 702 to strengthen the door leaf frame has a small impact on the overall weight and cost of the fireproof door leaf, ensuring that the fireproof door leaf has a good level of lightweighting and cost control.
[0032] In some embodiments, the two second inorganic fireproof boards 702 each include a second connecting plate portion and a second extending plate portion. The second connecting plate portions of the two second inorganic fireproof boards 702 are respectively attached to the front and rear sides of the second wooden frame 701, and the second extending plate portions of the two second inorganic fireproof boards 702 extend outward from the second wooden frame 701. By adopting the above technical solution and providing the second extending plate portions, a reinforced edge structure extending from the second wooden frame 701 can be formed, which helps to further improve the strength and rigidity of the window frame 7, and also helps to improve the stability of the connection between the window frame 7 and the door leaf core panel 5.
[0033] In practice, the length of the second inorganic fireproof board 702 is the same as the length of the second wooden frame 701. The two second inorganic fireproof boards 702 are stacked and pasted on the front and back sides of the second wooden frame 701 respectively.
[0034] In some embodiments, a third inorganic fireproof board 703 is connected to the inner side of the second wooden frame 701. By adopting the above technical solution, the third inorganic fireproof board 703 can further improve the strength, rigidity, and fire resistance of the window frame 7. In specific implementation, the third inorganic fireproof board 703 covers the inner side of the second wooden frame 701, and the third inorganic fireproof board 703 can be fixedly connected to the inner side of the second wooden frame 701 by means of fire-retardant structural adhesive. The fire-retardant structural adhesive can be formed by high-temperature and high-pressure polymerization of inorganic raw materials such as aluminum phosphate, magnesium silicate, sodium silicate, fire retardant, and inorganic polymer polymerizing agent. The fire-retardant structural adhesive can be a commercially available flame-retardant structural adhesive or fire-retardant structural adhesive.
[0035] In some embodiments, four window frame frames 7 are connected between the first panel 1 and the second panel 2. Using the above-described technical solution, the four window frame frames 7 can be hidden within the first panel 1 and the second panel 2.
[0036] In some embodiments, a wooden reinforcing rib 704 extending along the length direction of the second wooden frame 701 is connected to the outer side of the second wooden frame 701. By employing the above technical solution, the wooden reinforcing rib 704 can further enhance the structural strength of the window frame 7. In specific implementations, the wooden reinforcing rib 704 can be fixedly connected to the outer side of the second wooden frame 701 by adhesive bonding or screw connection.
[0037] In some embodiments, the window frame structure further includes two pressure strip assemblies respectively connected to the front and rear sides of the window frame 7, with the fireproof glass 6 sandwiched between the two pressure strip assemblies. The above technical solution ensures the stable installation of the fireproof glass 6. In a specific implementation, the pressure strip assembly consists of multiple pressure strips 8, each including a pressure strip body 801 and two fireproof pressure strip plates 802 respectively covering and connected to the front and rear sides of the pressure strip body 801. The pressure strips 8 can be fixedly connected to the window frame using fastening screws 803.
[0038] In some embodiments, the second wooden frame 701 and the wooden reinforcing ribs 704 can be made of flame-retardant multilayer boards, the second inorganic fireproof board 702, the third inorganic fireproof board 703, and the pressure strip body 801 can be made of magnesium oxide board, and the pressure strip fireproof board 802 can be made of flame-retardant multilayer boards. By adopting the above technical solutions, the fire resistance performance of the fireproof door leaf can be guaranteed.
[0039] In practical implementation, fireproof glass 6 can be made of multi-layer tempered glass, with fireproof material layers set between the multi-layer tempered glass.
[0040] In practice, a peephole 10, a door lock 9, and a handle can also be installed on the fire door.
[0041] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model. In the description of this specification, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a specific feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.
[0042] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate directions based on the appendix. Figure 1 , Figure 2 and Figure 4 The coordinate system in the diagram represents the orientation only for the convenience of describing the present invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
Claims
1. A fireproof door leaf, characterized in that, The fire door includes a door body, a first panel covering and connected to the rear side of the door body, and a second panel covering and connected to the front side of the door body. The door body includes a door frame and a door core panel embedded in the door frame. The door frame includes a rectangular frame formed by connecting four door frame edges arranged along the four edges of the fire door. Each of the four door frame edges includes a first wooden frame and two first inorganic fireproof boards extending along the length direction of the first wooden frame. The two first inorganic fireproof boards are respectively connected to the front and rear sides of the first wooden frame.
2. The fireproof door leaf according to claim 1, characterized in that, The two first inorganic fireproof boards each include a first connecting plate portion and a first extending plate portion. The first connecting plate portions of the two first inorganic fireproof boards are respectively attached to the front and rear sides of the first wooden frame, and the first extending plate portions of the two first inorganic fireproof boards extend inward from the first wooden frame.
3. The fireproof door leaf according to claim 1, characterized in that, The first inorganic fireproof board is made of magnesium oxide board, the door leaf core board is made of magnesium oxide board, the first panel and the second panel are made of flame-retardant multilayer board, and the first wooden frame is made of flame-retardant multilayer board.
4. The fireproof door leaf according to claim 1, characterized in that, The fireproof door leaf is provided with a fireproof window. The fireproof window includes a window frame structure and fireproof glass installed in the window frame structure. The window frame structure includes four window frame pieces arranged along the four edges of the fireproof glass. Each of the four window frame pieces includes a second wooden frame and two second inorganic fireproof plates extending along the length direction of the second wooden frame. The two second inorganic fireproof plates are respectively connected to the front and rear sides of the second wooden frame.
5. The fireproof door leaf according to claim 4, characterized in that, The two second inorganic fireproof boards each include a second connecting plate portion and a second extending plate portion. The second connecting plate portions of the two second inorganic fireproof boards are respectively attached to the front and rear sides of the second wooden frame, and the second extending plate portions of the two second inorganic fireproof boards extend outward from the second wooden frame.
6. The fireproof door leaf according to claim 4, characterized in that, A third inorganic fireproof board is connected to the inner side of the second wooden frame.
7. The fireproof door leaf according to claim 4, characterized in that, The four window frame rails are connected between the first panel and the second panel.
8. The fireproof door leaf according to claim 4, characterized in that, A wooden reinforcing rib extending along the length of the second wooden frame is connected to the outer side of the second wooden frame.
9. The fireproof door leaf according to claim 4, characterized in that, The window frame structure also includes two pressure strip assemblies respectively connected to the front and rear sides of the window frame, and the fireproof glass is sandwiched between the two pressure strip assemblies.
10. The fireproof door leaf according to claim 4, characterized in that, The second wooden frame is made of flame-retardant multilayer board, and the second inorganic fireproof board is made of magnesium oxide board.