Safe and heat-insulating fireproof door

Abstract

The utility model provides a safe heat-insulating fireproof door, which relates to the technical field of fireproof doors and comprises a steel structure door frame, a clamping groove is arranged in the middle of one end of the steel structure door frame, hollow plates are fixedly mounted at four corners of the clamping groove, movable grooves are arranged above and below the middles of the four hollow plates, and the movable grooves are fixedly connected with the clamping groove. A movable groove is formed in the middle of the hollow plate and communicates with the middle of the hollow plate, a hollow clamping plate is slidably clamped to the middle of the hollow plate, toothed plates are evenly and fixedly installed on the two sides of the middle of the hollow clamping plate, a sliding groove is formed in one side of the middle of the hollow plate and communicates with the interior of the hollow plate, and a fixing plate is fixedly installed in the middle of the sliding groove. And springs are fixedly mounted at the two ends of the fixing plate. According to the utility model, the decorative material can be fixed on the surface of the fireproof door without using glue so as to change the fireproof door, and the decorative material can be ensured not to fall off.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and in particular to a safe and heat-insulating fire door. Background Technology

[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity, and heat insulation for a certain period of time. They are fire-resistant partitions with a certain degree of fire resistance, installed in fire compartments, evacuation stairwells, vertical shafts, and other similar locations. In addition to the functions of ordinary doors, fire doors also have the function of preventing the spread of fire and smoke. They can stop the spread of fire for a certain period of time and ensure the evacuation of personnel, making them an essential guarantee for production safety.

[0003] Fire doors are increasingly widely used, and many households choose to install them to improve home security. However, existing fire doors with safety and insulation have several shortcomings in practical use. For example, the interior side of a fire door is often modified with adhesive to enhance aesthetics. However, over time, changes in humidity and temperature can cause the adhesive to weaken due to thermal expansion and contraction, moisture absorption, etc., leading to detachment and affecting the appearance. Furthermore, when replacing adhesive, the adhesive method may leave residue. This residue is often mottled, sticky, and difficult to clean, and some adhesive remains sticky, easily attracting dust and making the fire door surface dirty and messy. Therefore, designing a method that can fix decorative materials to the surface of a fire door without using glue, while ensuring the materials don't detach, has become a key issue in fire door technology. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a safe and heat-insulating fire door.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a safe and heat-insulating fireproof door, comprising: a steel structure door frame, a slot is provided in the middle of one end of the steel structure door frame, hollow plates are fixedly installed at the four corners of the slot, movable grooves are provided above and below the middle of the four hollow plates, the movable grooves are connected to the middle of the hollow plates, a hollow retaining plate is slidably engaged in the middle of the hollow plate, toothed plates are evenly fixedly installed on both sides of the middle of the hollow retaining plate, and a sliding groove is provided on one side of the middle of the hollow plate, the sliding groove and the toothed plate are connected to the toothed plate. The hollow plates are internally connected. A fixed plate is fixedly installed in the middle of the slide. Springs are fixedly installed at both ends of the fixed plate. A slider is fixedly installed at one end of each of the two sets of springs. A concave block is fixedly installed at one end of each slider. The concave block meshes with the gear teeth of the toothed plate. A T-shaped sliding plate is fixedly installed on one side of each of the two sliders. A lever is fixedly installed below one side of the middle of the hollow plate. A limit slide groove is opened on one side of the lower end of each of the four hollow plates installed on the steel structure door frame. The lever is slidably engaged in the middle of the limit slide groove.

[0006] In a preferred embodiment, a decorative plate is snapped into the middle of the slot, and one end of each of the four hollow plates abuts against the four corners of the decorative plate.

[0007] In a preferred embodiment, the T-shaped slide plate and the slider are respectively slidably engaged in the middle of the hollow plate and the groove.

[0008] In one preferred embodiment, a peephole is provided through the upper part of the middle of the steel structure door frame.

[0009] In a preferred embodiment, a hollow groove is provided in the middle of the steel structure door frame, and the middle of the hollow groove is filled with a fireproof and heat-insulating board.

[0010] In a preferred embodiment, door handles are fixedly installed on one side of the middle of both ends of the steel structure door frame.

[0011] In one preferred embodiment, multiple hinges are evenly fixedly installed on the other side of the steel structure door frame.

[0012] In a preferred embodiment, the decorative panel and the fireproof and heat-insulating board filled inside the steel structure door frame are both provided with holes in the middle that are the same as the peepholes.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. When using this utility model to fix the decorative panel, first attach it to the slot and press down the four sets of T-shaped sliding plates. This causes the slider to compress the spring, disengaging the concave locking block from the toothed plate. Then, move the lever to allow the hollow locking plate to slide within the hollow plate to a suitable position to limit the decorative panel. Finally, release the T-shaped sliding plate. The spring causes the concave locking block to reset, engaging the toothed plate to limit the hollow locking plate. The four hollow locking plates abut against the four corners of the decorative panel, ensuring its stability and preventing wobbling. This snap-fit ​​method avoids the drawbacks of traditional pasting methods, is aesthetically pleasing, easy to maintain and replace, and is less likely to damage the door frame and decorative panel.

[0015] 2. In use, the fireproof and heat-insulating board filled in the hollow groove is made of rock wool and mineral wool. It has stable chemical properties, does not burn in a fire, and can block the spread of flames. At the same time, its internal pore structure is small, interconnected or closed, and has a low thermal conductivity, which can significantly reduce the heat conduction speed. This allows the other side of the fire door to remain at a low temperature for a long time under high temperature, preventing heat radiation and avoiding the ignition of surrounding items due to high temperature, thus effectively improving safety performance. Attached Figure Description

[0016] Figure 1 This is a first external structural diagram of a fire door with safety and heat insulation provided by this utility model.

[0017] Figure 2 This is a second exterior structural diagram of a fire door with safety and heat insulation provided by this utility model.

[0018] Figure 3 This is a third external structural diagram of a fire door with safety and heat insulation provided by this utility model.

[0019] Figure 4 This utility model provides a safe and heat-insulating fire door. Figure 1 A magnified structural diagram of region A in the middle.

[0020] Figure 5 A cross-sectional view of the steel frame of a fireproof door with safety and heat insulation provided by this utility model.

[0021] Figure 6 Exploded cross-sectional view of the hollow panel structure of a fireproof door with safety and heat insulation provided by this utility model.

[0022] Legend:

[0023] 1. Steel structure door frame; 11. Hollow groove; 12. Fireproof and heat-insulating board; 13. Peephole reserved hole; 14. Door handle; 15. Hinge; 16. Card slot; 17. Decorative panel; 2. Hollow board; 21. Movable groove; 22. Hollow card plate; 23. Toothed plate; 24. Toggle rod; 25. Slide groove; 26. Fixing plate; 27. Spring; 28. Slider; 29. ​​Concave card block; 30. T-shaped sliding plate; 31. Limiting slide groove. Detailed Implementation

[0024] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0025] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0026] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected through a transitional structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that 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.

[0029] Example 1: As Figure 1-6As shown, this utility model provides a technical solution: a safe and heat-insulating fireproof door, comprising: a steel structure door frame 1, a slot 16 is provided in the middle of one end of the steel structure door frame 1, hollow plates 2 are fixedly installed at the four corners of the slot 16, movable grooves 21 are provided above and below the middle of the four hollow plates 2, the movable grooves 21 are connected to the middle of the hollow plates 2, a hollow locking plate 22 is slidably engaged in the middle of the hollow plate 2, toothed plates 23 are evenly fixedly installed on both sides of the middle of the hollow locking plate 22, a sliding groove 25 is provided on one side of the middle of the hollow plate 2, the sliding groove 25 is connected to the interior of the hollow plate 2, a fixing plate 26 is fixedly installed in the middle of the sliding groove 25, and springs 2 are fixedly installed at both ends of the fixing plate 26. 7. A slider 28 is fixedly installed at one end of each of the two sets of springs 27. A concave block 29 is fixedly installed at one end of the slider 28. The concave block 29 meshes with the gear teeth of the toothed plate 23. A T-shaped slide plate 30 is fixedly installed on one side of each of the two sliders 28. A lever 24 is fixedly installed below one side of the middle of the hollow plate 22. A limit groove 31 is opened on one side of the lower end of each of the four hollow plates 2 installed on the steel structure door frame 1. The lever 24 is slidably engaged in the middle of the limit groove 31. A decorative plate 17 is engaged in the middle of the groove 16. The four corners of the decorative plate 17 are abutted at one end of each of the four hollow plates 22. The T-shaped slide plate 30 and the slider 28 are slidably engaged in the middle of the hollow plate 2 and the groove 25, respectively.

[0030] In this embodiment, before fixing the decorative panel 17, the four hollow card plates 22 are located in the middle of the movable groove 21. Simply attach the decorative panel 17 of the appropriate size to the inner wall of the groove 16. Then, press the corresponding four sets of T-shaped sliding plates 30 inwards simultaneously. As the T-shaped sliding plates 30 move, they will cause the slider 28 to compress the spring 27. During this process, the concave card block 29 connected to the slider 28 will also move in the direction of spring 27 contraction. At this time, the concave card block 29 will disengage from the gear teeth of the toothed plate 23 inside the hollow card plate 22. By moving the lever 24, the hollow card plate 22 can slide within the hollow plate 2 until the four sets of hollow card plates 22 are moved to the appropriate position, thereby limiting the decorative panel 17. Then, release the pressure on the T-shaped sliding plates 30. Under the action of spring 27, concave locking block 29 will reset and engage with the gear teeth of toothed plate 23 through the groove of concave locking block 29, thereby limiting the position of hollow locking plate 22. The four hollow locking plates 22 respectively abut against the four corners of decorative panel 17, positioning and fixing decorative panel 17 from multiple directions, ensuring the stability of decorative panel 17 in the slot 16, and preventing it from shaking or shifting during daily use. The decorative panel 17 is fixed by snap-fit, avoiding the problems of glue residue, bubbling, and falling off that may occur with traditional pasting methods, which affect the appearance. This makes the overall appearance of the fire door cleaner and more beautiful. When maintaining or replacing decorative panel 17, this structure is easy to operate and does not easily damage the door frame and decorative panel 17.

[0031] Example 2: Figure 1-5 As shown, a peephole 13 is provided through the upper middle part of the steel structure door frame 1. A hollow groove 11 is provided in the middle of the steel structure door frame 1. The middle of the hollow groove 11 is filled with a fireproof and heat-insulating board 12. Door handles 14 are fixedly installed on one side of the middle of both ends of the steel structure door frame 1. Multiple hinges 15 are evenly fixedly installed on the other side of the steel structure door frame 1. The middle of the decorative panel 17 and the fireproof and heat-insulating board 12 filled inside the steel structure door frame 1 are provided with holes that are the same as the peephole 13.

[0032] In this embodiment, the peephole 13 allows residents to observe the outside without opening the door, effectively improving home security. The fireproof and heat-insulating board 12 filled in the hollow groove 11 is made of rock wool and mineral wool. Rock wool and mineral wool are mainly composed of natural rocks or minerals, and are chemically stable. In the event of a fire, they will not burn and can effectively block the spread of flames. At the same time, the two materials have a large number of tiny, interconnected or closed pore structures inside, with low thermal conductivity, which hinders heat transfer and significantly reduces the heat conduction rate. In high-temperature environments, this can keep the other side of the fire door at a lower temperature for a long time, preventing heat radiation to the surrounding area and avoiding damage to surrounding objects. Due to the high temperature ignition, the fire door effectively improves safety. The door handle 14 is installed on one side of the middle of both ends of the steel structure door frame 1, making it convenient for users to grip and apply force, and easily realize the opening and closing actions. Multiple hinges 15 are evenly installed on the other side of the steel structure door frame 1, providing stable support and flexible rotation connection for the door. The decorative panel 17 and the fireproof and heat-insulating panel 12 have holes in the middle that are the same as the peephole reserved hole 13, ensuring the consistency and integrity of the peephole installation position when viewed from both the inside and outside of the door. The overall aesthetics of the door will not be affected by the mismatch of hole positions, so that the fire door can not only be functional, but also blend with the interior decoration style and enhance the overall aesthetics of the home.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0034] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A safe and heat-insulating fire door, comprising a steel structure door frame (1), characterized in that: A slot (16) is provided in the middle of one end of the steel structure door frame (1). Hollow plates (2) are fixedly installed at the four corners of the slot (16). Movable grooves (21) are provided above and below the middle of the four hollow plates (2). The movable grooves (21) are connected to the middle of the hollow plates (2). A hollow plate (22) is slidably engaged in the middle of the hollow plate (2). Toothed plates (23) are evenly fixedly installed on both sides of the middle of the hollow plate (22). A sliding groove (25) is provided on one side of the middle of the hollow plate (2). The sliding groove (25) is connected to the interior of the hollow plate (2). A fixing plate (26) is fixedly installed in the middle of the sliding groove (25). The fixed plate (26) is fixedly installed with springs (27) at both ends. Each of the two sets of springs (27) is fixedly installed with a slider (28) at one end. Each of the sliders (28) is fixedly installed with a concave block (29) at one end. The concave block (29) meshes with the gear teeth of the toothed plate (23). Each of the two sliders (28) is fixedly installed with a T-shaped slide plate (30) on one side. A lever (24) is fixedly installed below one side of the middle part of the hollow plate (22). The steel structure door frame (1) is equipped with four hollow plates (2). Each of the four hollow plates (2) has a limit groove (31) on one side. The lever (24) slides and engages with the middle part of the limit groove (31).

2. The fireproof door with safety and heat insulation according to claim 1, characterized in that: A decorative plate (17) is attached to the middle of the slot (16), and one end of each of the four hollow plates (22) abuts against the four corners of the decorative plate (17).

3. A fireproof door with safety and heat insulation according to claim 2, characterized in that: The T-shaped slide plate (30) and the slider (28) are respectively slidably engaged in the middle of the hollow plate (2) and the groove (25).

4. A fireproof door with safety and heat insulation according to claim 1, characterized in that: A cat's eye pre-reserved hole (13) is provided through the upper part of the middle of the steel structure door frame (1).

5. A fireproof door with safety and heat insulation according to claim 4, characterized in that: The steel structure door frame (1) has a hollow groove (11) in the middle, and the hollow groove (11) is filled with a fireproof and heat-insulating board (12).

6. A fire door with safety and heat insulation according to claim 5, characterized in that: Door handles (14) are fixedly installed on one side of the middle of both ends of the steel structure door frame (1).

7. A fireproof door with safety and heat insulation according to claim 1, characterized in that: Multiple hinges (15) are evenly fixedly installed on the other side of the steel structure door frame (1).

8. A fireproof door with safety and heat insulation according to claim 2, characterized in that: The decorative panel (17) and the fireproof and heat-insulating board (12) filled inside the steel structure door frame (1) both have holes in the middle that are the same as the peephole (13).

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