Concealed fireproof door

Abstract

The utility model relates to the technical field of fireproof doors, in particular to a concealed type fireproof door. Comprising a door leaf, a door frame, a rotating shaft and a movable stop block used for blocking a door slot, and when the door leaf is closed, the periphery of the door leaf abuts against the first spigot, the second spigot and the movable stop block; when the door leaf is opened, the door leaf pushes the movable stop block to rotate synchronously. The first seam allowance and the second seam allowance which are opposite in direction are arranged on the opposite faces of the left side and the right side of the door frame, and fire-retardant barriers are formed on the left side and the right side of the door leaf. The movable stop blocks are rotationally mounted on the upper side and the lower side of the door frame correspondingly, and on the basis that it is guaranteed that the door leaf can be normally opened and closed, fire-retardant barriers are formed on the upper side and the lower side of the door leaf; the first seam allowance, the second seam allowance and the movable stop block are used for comprehensively arranging fire-retardant barriers on the periphery of the door leaf, and the complete fire-retardant barrier is formed.

Description

Technical Field

[0001] The utility model relates to the technical field of fire doors, and more specifically, to a concealed fire door. Background Art

[0002] A fire door refers to a door that can meet the requirements of fire resistance stability, integrity and heat insulation within a certain period of time. It is a fire partition with a certain fire resistance set in fire compartments, evacuation stairwells, vertical shafts, etc. The existing patent application documents disclose a concealed fire door, including a door leaf and a door frame, the door frame structure is in an L shape; both sides of the door leaf are in a rabbet shape in opposite directions; a circular arc engagement is provided between the side of the door leaf where the rotating shaft is located and the door frame. However, this kind of fire door only sets fire prevention structures on the left and right sides of the door leaf, and there is no fire prevention barrier on the upper and lower sides of the door leaf, resulting in poor fire prevention effect. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a concealed fire door, which sets fire prevention barriers around the door leaf to improve the fire prevention effect.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] A concealed fire door includes a door leaf, a door frame, a rotating shaft and a movable stopper for blocking the door gap. The door leaf is rotatably connected to the door frame through the rotating shaft; the opposite surfaces on the left and right sides of the door frame are provided with a first rabbet and a second rabbet; the movable stoppers are rotatably installed on the upper and lower sides of the door frame. When the door leaf is closed, the periphery of the door leaf abuts against the first rabbet, the second rabbet and the movable stopper; when the door leaf is opened, the door leaf pushes the movable stopper to rotate synchronously.

[0006] According to the above technical means, for a concealed fire door provided by the utility model, during installation, the door frame is installed at the position where the fire door needs to be installed, and the door leaf is rotatably installed in the door frame through the rotating shaft. When closing the door, the first rabbet and the second rabbet on the opposite surfaces on the left and right sides of the door frame respectively abut against the left and right side surfaces of the door leaf, forming a fire prevention barrier for the left and right sides of the door leaf; the movable stopper abuts against the upper and lower sides of the door leaf, forming a fire prevention barrier for the upper and lower sides of the door leaf; through the settings of the first rabbet, the second rabbet and the movable stopper, fire prevention barriers are formed around the door leaf, improving the fire prevention effect. When opening the door, the door leaf rotates in the door frame through the rotating shaft, and at the same time the door leaf abuts against the movable stopper, causing the movable stopper to rotate, realizing the normal opening of the door leaf.

[0007] Further, it further includes an elastic member, and two ends of the elastic member are respectively connected to the door frame and the movable stopper. When opening the door, the movable stopper rotates under the abutment of the door leaf, enabling the elastic member to accumulate elastic potential energy; when closing the door, the movable stopper is reset under the elastic force of the elastic member, and a fireproof barrier is formed again on the upper and lower sides of the door leaf.

[0008] Further, it further includes a fixed stopper, and the fixed stoppers are fixedly installed on the upper and lower sides of the door frame, and the fixed stoppers are arranged side by side with the movable stoppers. By providing the fixed stoppers, only the movable stoppers rotate when opening the door, and the fixed stoppers still remain fixed on the upper and lower sides of the door frame, reducing the movable parts of the upper and lower seals and further improving the sealing effect.

[0009] Further, the door frame includes a first horizontal frame, a second horizontal frame, a first vertical frame and a second vertical frame; two ends of the first horizontal frame are respectively connected to one ends of the first vertical frame and the second vertical frame, and two ends of the second horizontal frame are respectively connected to the other ends of the first vertical frame and the second vertical frame; the door leaf is rotatably connected to the first horizontal frame and / or the second horizontal frame through a rotating shaft, the door leaf is vertically arranged and can be rotated to open, the first vertical frame is close to the rotating shaft, and the second vertical frame is far from the rotating shaft; two ends of the elastic member are respectively connected to the movable stopper and the first horizontal frame or the movable stopper and the second horizontal frame, that is, the elastic member is located on the rotating shaft of the movable stopper; the first stop is arranged on the first vertical frame, and the second stop is arranged on the second vertical frame, and a fireproof barrier can be formed on both the first vertical frame and the second vertical frame, that is, a fireproof barrier is formed on both the left and right sides of the door leaf; the movable stoppers are rotatably installed on both the first horizontal frame and the second horizontal frame, and the fixed stoppers are fixedly installed on both the first horizontal frame and the second horizontal frame, and the movable stoppers and the fixed stoppers jointly form a fireproof barrier on the first horizontal frame and the second horizontal frame, that is, a fireproof barrier is formed on both the upper and lower sides of the door leaf.

[0010] Further, the movable stopper is hermetically connected to the fixed stopper to prevent fire from passing through between the movable stopper and the fixed stopper. The total horizontal length of the movable stopper and the fixed stopper is at least the distance between the first vertical frame and the second vertical frame, forming a comprehensive fireproof barrier on the upper and lower sides of the door leaf and further improving the fireproof effect.

[0011] Further, both ends of the fixed stopper are located between the rotating shaft and the second vertical frame, enabling the door leaf to be fully opened. When the fixed stopper is located at the rotating shaft, it is the limit position where the door leaf can be fully opened. At this time, when opening the door, the fireproof barriers retained on the upper and lower sides of the door leaf are in the maximum situation, and at the same time, by connecting the other end to the second vertical frame, the required length of the fixed stopper is reduced to a certain extent.

[0012] Further, a door lock is provided on the door leaf, and a lock groove matching the door lock is provided on the door frame. The door lock and the lock groove are provided to assist in increasing the fireproof barrier. When a fire breaks out, the door leaf is kept in a closed state through the door lock, further improving the fire resistance effect.

[0013] Further, a fireproof expansion seal is provided on the door leaf or the door frame, and the fireproof expansion seal is installed on the contact surface between the door leaf and the door frame. When a fire occurs, the fireproof expansion seal expands, and the expanded fireproof expansion seal blocks the gap between the door leaf and the door frame, further forming a fireproof barrier.

[0014] Further, one side of the door leaf abuts against the second rabbet, and a blocking block is provided on the other side of the door leaf, and the blocking block abuts against the first rabbet. One side of the door leaf is abutted against the second rabbet to form a fire resistance seal. By providing the blocking block to abut against the first rabbet, on the basis of facilitating door opening, fire resistance seals are formed on both sides of the door leaf.

[0015] Further, the door leaf includes a fireproof door core board and a decorative panel, and the decorative panel is arranged on the outer side of the fireproof door core board. The fireproof door core board is provided to play a role in fireproofing and heat insulation, and the decorative panel is provided to decorate the door leaf, enabling the door leaf to blend into the overall decoration near the door leaf and realizing the concealed installation of the fireproof door.

[0016] Further, steel meshes are provided on both the decorative panel and the door frame. By providing the steel meshes, it is convenient to form mutually penetrating spaces on both the door leaf and the door frame, enabling the adhesive to adhere more fully to the door leaf and the door frame, and thus being able to bond and paste materials more firmly, meeting the requirements of indoor decoration visual effects.

[0017] Compared with the prior art, the beneficial effects are as follows:

[0018] 1. For a concealed fireproof door provided by the present utility model, by providing a first rabbet and a second rabbet in opposite directions on the opposite surfaces of the left and right sides of the door frame, fire resistance barriers are formed on the left and right sides of the door leaf; by rotatably installing the movable stoppers on both the upper and lower sides of the door frame, on the basis of ensuring normal opening and closing of the door leaf, fire resistance barriers are formed on the upper and lower sides of the door leaf; the first rabbet, the second rabbet and the movable stoppers comprehensively set fire resistance barriers around the door leaf, forming a complete fire resistance barrier.

[0019] 2. For a concealed fireproof door provided by the present utility model, by providing an elastic member, when the door leaf is closed, the movable stopper is reset under the elastic force of the elastic member, and a fire resistance barrier is formed again on the upper and lower sides of the door leaf.

[0020] 3. The concealed fire door provided by the present utility model can make the adhesive adhere more fully to the door leaf and the door frame by arranging a steel mesh, so that the hanging and pasting materials can be adhered more firmly, meeting the visual requirements of indoor decoration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the concealed fire door of the present utility model;

[0022] Figure 2 is Figure 1 the A-A cross-sectional view in

[0023] Figure 3 is Figure 1 the B-B cross-sectional view in

[0024] Figure 4 is Figure 1 the C-C cross-sectional view in

[0025] Among them, the illustration marks are explained as follows: 1. Door leaf; 101. Fire door core board; 102. Decorative panel; 2. Door frame; 201. First horizontal frame; 202. Second horizontal frame; 203. First vertical frame; 231. First rabbet; 204. Second vertical frame; 241. Second rabbet; 3. Rotating shaft; 4. Movable stop block; 5. Elastic member; 6. Fixed stop block; 7. Door lock; 8. Fire expansion seal; 9. Plugging block; 10. Steel mesh. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The present invention will be described in one of the embodiments in conjunction with the specific embodiments. Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, rather than physical diagrams, and should not be construed as a limitation to the present invention; for better illustrating the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for exemplary illustration and cannot be construed as a limitation to the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. In addition, if the embodiments of the present invention involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution where A and B are satisfied simultaneously.

[0028] Embodiment 1

[0029] As Figures 1 to 4 shown, this embodiment provides a recessed fire door, which includes a door leaf 1, a door frame 2, a rotating shaft 3, and a movable stopper 4 for blocking the door gap. The door leaf 1 is rotatably connected to the door frame 2 through the rotating shaft 3; on the opposite surfaces of the left and right sides of the door frame 2, there are a first stop 231 and a second stop 241; movable stoppers 4 are rotatably installed on the upper and lower sides of the door frame 2. The rotation mode of the movable stopper 4 and the door frame 2 can adopt a rotation connection mode such as hinge or movable riveting that can achieve coaxial rotation. When the door leaf 1 is closed, the periphery of the door leaf 1 abuts against the first stop 231, the second stop 241, and the movable stopper 4; when the door leaf 1 is opened, the door leaf 1 pushes the movable stopper 4 to rotate synchronously.

[0030] According to the above technical means, a recessed fire door provided by the utility model is installed by installing the door frame 2 at the position where the fire door needs to be installed, and the door leaf 1 is rotatably installed in the door frame 2 through a rotating shaft 3. A door closer for automatically closing the door leaf 1 is installed on the door leaf 1 and the door frame 2, and the door closer is a conventional structure. When closing the door, the first stop 231 and the second stop 241 on the opposite surfaces of the left and right sides of the door frame 2 are respectively abutted against the left and right sides of the door leaf 1 to form a fire barrier for the left and right sides of the door leaf 1; the movable stop 4 is abutted against the upper and lower sides of the door leaf 1, and the length of the movable stop 4 is the length of the entire horizontal frame, forming a fire barrier for the upper and lower sides of the door leaf 1; through the settings of the first stop 231, the second stop 241 and the movable stop 4, fire barriers are formed around the door leaf 1, improving the fire resistance effect. When opening the door, the door leaf 1 rotates in the door frame 2 through the rotating shaft 3, and at the same time the door leaf 1 abuts against the movable stop 4, causing the movable stop 4 to rotate, realizing the normal opening of the door leaf 1. The rotating shaft of the movable stop 4 can be vertical, horizontal or inclined, as long as it can ensure that the door leaf 1 can be opened.

[0031] Embodiment 2

[0032] A recessed fire door proposed in this embodiment, on the basis of Embodiment 1, in this embodiment, as Figure 2 shown, it further includes an elastic member 5, and both ends of the elastic member 5 are respectively connected to the door frame 2 and the movable stop 4. When opening the door, the movable stop 4 rotates under the abutment of the door leaf 1, causing the elastic member 5 to accumulate elastic potential energy; when closing the door, the movable stop 4 is reset under the elastic force of the elastic member 5, and a fire barrier is formed again for the upper and lower sides of the door leaf 1. Figure 2 In the elastic member 5, a spring with bearings is used, and both ends of the spring with bearings are respectively connected to the door frame 2 and the movable stop 4, and the spring with bearings is located at the rotational connection of the door frame 2 and the movable stop 4.

[0033] It further includes a fixed stop 6, and fixed stops 6 are fixedly installed on the upper and lower sides of the door frame 2. The fixed stops 6 are arranged side by side with the movable stop 4, that is, the fixed stops 6 are parallel to the movable stop 4. By setting the fixed stops 6, only the movable stop 4 rotates when opening the door, and the fixed stops 6 still remain fixed on the upper and lower sides of the door frame 2, reducing the movable part of the upper and lower seals, and further improving the sealing effect. The fixed stop 6 can be directly set as a part of the door frame 2, so that it is more convenient for processing and installation.

[0034] In addition to being rotatably arranged on the door frame 2, the movable stop 4 can also be rotatably arranged on the fixed stop 6. When the movable stop 4 is rotatably arranged on the fixed stop 6, the normal opening and closing of the door leaf 1 still needs to be ensured. The connection between the movable stop 4 and the fixed stop 6 can adopt a rotational connection method such as hinge or movable riveting that can achieve coaxial rotation.

[0035] As Figures 1 to 3 shown, the door frame 2 includes a first horizontal frame 201, a second horizontal frame 202, a first vertical frame 203 and a second vertical frame 204; both ends of the first horizontal frame 201 are respectively connected to one end of the first vertical frame 203 and the second vertical frame 204, and both ends of the second horizontal frame 202 are respectively connected to the other end of the first vertical frame 203 and the second vertical frame 204. Here, the fixed connection can adopt welding, and the welding connection method makes the connection between the first horizontal frame 201, the second horizontal frame 202, the first vertical frame 203 and the second vertical frame 204 more stable, ensuring the use stability of the door frame 2; the door leaf 1 is rotatably connected to the first horizontal frame 201 and / or the second horizontal frame 202 through a rotating shaft 3. The door leaf 1 is vertically arranged and can be rotated and opened. The first vertical frame 203 is close to the rotating shaft 3, and the second vertical frame 204 is far from the rotating shaft 3; both ends of the elastic member 5 are respectively connected to the movable stop 4 and the first horizontal frame 201 or the movable stop 4 and the second horizontal frame 202, that is, the elastic member 5 is located on the rotating shaft of the movable stop 4; a first rabbet 231 is arranged on the first vertical frame 203, and a second rabbet 241 is arranged on the second vertical frame 204, which can form a fire resistance barrier on both the first vertical frame 203 and the second vertical frame 204, that is, form a fire resistance barrier on both the left and right sides of the door leaf 1; movable stops 4 are rotatably installed on both the first horizontal frame 201 and the second horizontal frame 202, and fixed stops 6 are fixedly installed on both the first horizontal frame 201 and the second horizontal frame 202. The movable stops 4 and the fixed stops 6 jointly form a fire resistance barrier on the first horizontal frame 201 and the second horizontal frame 202, that is, form a fire resistance barrier on both the upper and lower sides of the door leaf 1.

[0036] As Figure 2 shown, the movable stop 4 is hermetically connected to the fixed stop 6 to prevent fire from passing through between the movable stop 4 and the fixed stop 6. The total horizontal length of the movable stop 4 and the fixed stop 6 is at least the distance between the first vertical frame 203 and the second vertical frame 204, forming a comprehensive fire resistance barrier on both the upper and lower sides of the door leaf 1 and further improving the fire resistance effect.

[0037] Both ends of the fixed stop 6 are located between the rotating shaft 3 and the second vertical frame 204, enabling the door leaf 1 to open fully. When the fixed stop 6 is located at the rotating shaft, that is, when the left end of the fixed stop 6 is aligned with the rotating shaft 3, it is the limit position where the door leaf 1 can open fully. At this time, when opening the door, the fireproof barriers retained on the upper and lower sides of the door leaf 1 are in the maximum situation. That is, when the movable stop 4 rotates, the fixed stop 6 provides the maximum sealing for the upper and lower sides of the door leaf 1. At the same time, the other end is connected to the second vertical frame 204, that is, the right end of the fixed stop 6 is connected to the second vertical frame 204, which reduces the required length of the fixed stop 6 to a certain extent.

[0038] Embodiment 3

[0039] A concealed fire door proposed in this embodiment is based on Embodiment 1. In this embodiment, as Figure 1 shown, a door lock 7 is provided on the door leaf 1, and a lock groove matching the door lock 7 is provided on the door frame 2. By setting the door lock 7 and the lock groove, it helps to increase the fireproof barrier. When a fire occurs, the door leaf 1 is kept in a closed state by the door lock 7, further enhancing the fire resistance effect.

[0040] As Figure 4 shown, a fireproof expansion seal 8 is provided on the door leaf 1 or the door frame 2, and the fireproof expansion seal 8 is installed on the contact surface between the door leaf 1 and the door frame 2. When a fire occurs, the fireproof expansion seal 8 expands, and the expanded fireproof expansion seal 8 seals the gap between the door leaf 1 and the door frame 2, further forming a fireproof barrier and enhancing the fire resistance effect.

[0041] As Figure 2 and Figure 4 shown, one side of the door leaf 1 abuts against the second rabbet 241, and a sealing block 9 is provided on the other side of the door leaf 1, and the sealing block 9 abuts against the first rabbet 231. One side of the door leaf 1 is abutted against the second rabbet 241 to form a fireproof seal. By setting the sealing block 9 to abut against the first rabbet 231, on the basis of facilitating door opening, fireproof seals are formed on both sides of the door leaf 1.

[0042] Embodiment 4

[0043] A concealed fire door proposed in this embodiment is based on Embodiment 1. In this embodiment, as Figure 3 shown, the door leaf 1 includes a fireproof door core board 101 and a decorative panel 102, and the decorative panel 102 is arranged on the outside of the fireproof door core board 101. By setting the fireproof door core board 101, it plays a role in fireproof and heat insulation. By setting the decorative panel 102, it plays a decorative role for the door leaf 1, enabling the door leaf 1 to blend into the overall decoration near the door leaf 1 and realizing the concealed installation of the fire door.

[0044] As Figure 1As shown, steel meshes 10 are provided on both the decorative panel 102 and the door frame 2. The steel meshes 10 are interwoven circular irons in a mesh shape, and there are regular non-interwoven gaps on the steel meshes 10. By setting the steel meshes 10, it is convenient to form interconnected spaces on both the door leaf 1 and the door frame 2. When using a fluid adhesive or cement mortar to fill the surface of the door leaf, the fluid will coagulate with each other through the interconnected spaces. As long as the fluid adhesive is filled sufficiently, decorative materials can be pasted on the surfaces of the door frame and the door leaf, enabling the adhesive to adhere more fully to the door leaf 1 and the door frame 2, thereby being able to bond and hang the materials more firmly. Through the adhesive in the interconnected spaces, the frame and the decorative materials can be fastened together to form an integral whole, meeting the requirements of the indoor decoration appearance.

[0045] After pasting the hanging materials, the thickness of the door leaf 1 will increase. By using the rotating shaft 3 instead of the traditional hinge, it is convenient for the door leaf 1 to still be able to open and close normally after the thickness increases, and at the same time, it can ensure the overall surface flatness of the door frame 2 and the door leaf 1, enabling the fire door to be recessed.

[0046] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations 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 a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A concealed fire door, comprising a door leaf (1), a door frame (2) and a rotating shaft (3), wherein the door leaf (1) is rotatably connected to the door frame (2) through the rotating shaft (3); opposite surfaces on the left and right sides of the door frame (2) are provided with a first rabbet (231) and a second rabbet (241); characterized in that, It further includes a movable stopper (4) for blocking the door gap. The movable stopper (4) is rotatably installed on the upper and lower sides of the doorframe (2). When the door leaf (1) is closed, the periphery of the door leaf (1) abuts against the first rabbet (231), the second rabbet (241), and the movable stopper (4). When the door leaf (1) is opened, the door leaf (1) pushes the movable stopper (4) to rotate synchronously.

2. The recessed fire door according to claim 1, wherein It further includes a fixed stopper (6). The fixed stopper (6) is fixedly installed on the upper and lower sides of the doorframe (2), and the fixed stopper (6) is arranged side by side with the movable stopper (4).

3. The recessed fire door according to claim 2, wherein, The doorframe (2) includes a first horizontal frame (201), a second horizontal frame (202), a first vertical frame (203), and a second vertical frame (204). The two ends of the first horizontal frame (201) are respectively connected to one end of the first vertical frame (203) and the second vertical frame (204). The two ends of the second horizontal frame (202) are respectively connected to the other ends of the first vertical frame (203) and the second vertical frame (204). The door leaf (1) is rotatably connected to the first horizontal frame (201) and / or the second horizontal frame (202) through a rotating shaft (3). The first vertical frame (203) is close to the rotating shaft (3), and the second vertical frame (204) is far from the rotating shaft (3). The first rabbet (231) is arranged on the first vertical frame (203), and the second rabbet (241) is arranged on the second vertical frame (204). The movable stopper (4) is rotatably installed on both the first horizontal frame (201) and the second horizontal frame (202), and the fixed stopper (6) is fixedly installed on both the first horizontal frame (201) and the second horizontal frame (202).

4. The recessed fire door according to claim 3, wherein, The movable stopper (4) is hermetically connected to the fixed stopper (6), and the total lateral length of the movable stopper (4) and the fixed stopper (6) is at least the distance between the first vertical frame (203) and the second vertical frame (204).

5. The recessed fire door according to claim 4, wherein Both ends of the fixed stopper (6) are located between the rotating shaft (3) and the second vertical frame (204).

6. The recessed fire door according to any one of claims 1 to 5, characterized in that, It further includes an elastic member (5). The two ends of the elastic member (5) are respectively connected to the doorframe (2) and the movable stopper (4).

7. The recessed fire door according to any one of claims 1 to 5, characterized in that, A door lock (7) is provided on the door leaf (1), and a lock groove matching the door lock (7) is provided on the doorframe (2). A fireproof expansion seal (8) is provided on the door leaf (1) or the doorframe (2), and the fireproof expansion seal (8) is installed on the contact surface between the door leaf (1) and the doorframe (2).

8. The recessed fire door according to any one of claims 1 to 5, characterized in that, One side of the door leaf (1) abuts against the inside of the second rabbet (241), and a blocking block (9) is provided on the other side of the door leaf (1). The blocking block (9) abuts against the inside of the first rabbet (231).

9. The recessed fire door according to any one of claims 1 to 5, characterized in that, The door leaf (1) includes a fireproof door core board (101) and a decorative panel (102), and the decorative panel (102) is arranged on the outer side of the fireproof door core board (101).

10. The recessed fire door according to claim 9, wherein, Steel meshes (10) are provided on both the decorative panel (102) and the doorframe (2).

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