Fireproof door convenient to disassemble and replace
By improving the design of the sliding rails, splicing rings, and magnesium oxide fireproof boards of fire doors, the problems of insufficient strength and complex disassembly and assembly of fire doors have been solved, enabling quick disassembly and replacement, and improving fire resistance and safety.
Patent Information
- Application Number
- CN202520302444.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-25
AI Technical Summary
Existing fire doors generally have low strength, complex structure, cumbersome disassembly and assembly process, are time-consuming and labor-intensive, lack quick locking structure, and have only one flame-retardant effect, failing to provide effective multi-layer fire protection.
The door body adopts a sliding rail and sliding groove design, and the door panel and fireproof board are fixed by bolts. The limit plate pops out automatically to facilitate the replacement of the flame-retardant board. The top door frame is divided into a first and second top frame that can be spliced and fixed by splicing rings and bolts. Fiberglass magnesium fireproof board is used as the flame-retardant material, and it is quickly assembled with plugs and slots.
It enables the rapid disassembly and replacement of fire doors, improves fire resistance and flexibility, and ensures safe evacuation and fire protection during a fire.
Smart Images

Figure CN223881056U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fireproof door technical field, concretely is a kind of fireproof door of convenient dismounting replacement. BACKGROUND
[0002] Fire door refers to the door that can meet the requirements of fire resistance stability, integrity and heat insulation for a certain time, it is the fireproof partition with certain fire resistance, which is arranged between fire compartment, evacuation stairway and vertical shaft, the fireproof door has the function of preventing the spread of fire and smoke diffusion in addition to the function of ordinary door, can prevent the spread of fire for a certain time, ensure personnel evacuation, the existing fireproof door is the protection equipment for personal safety when fire occurs, and the fireproof door needs to be maintained frequently.
[0003] The patent application with publication number CN220395544U discloses a fireproof door convenient to disassemble, which comprises a fireproof door frame, the fireproof door frame is divided into two parts from the middle, a first rotating shaft is rotatably connected to the center of the top of the fireproof door frame, the two parts of the fireproof door frame are rotatably connected through the first rotating shaft, a second rotating shaft is rotatably connected to the inner side of the fireproof door frame, the fireproof door frame is rotatably connected with a fireproof door plate through the second rotating shaft, and a third rotating shaft is rotatably connected to the middle of the fireproof door plate.
[0004] However, the fireproof door disclosed above has the following problems: the strength is general, the structure is complex, the disassembly and assembly process is cumbersome, time-consuming and laborious, there is a lack of a quick locking structure, the fire retardant effect is single, and multiple fireproofing cannot be achieved on the fire source when fire occurs. UTILITY MODEL CONTENTS
[0005] The utility model aims at: in order to solve the strength of the existing fireproof door, the structure is complex, the disassembly and assembly process is cumbersome, time-consuming and laborious, there is a lack of a quick locking structure, and the fire retardant effect is single, and multiple fireproofing cannot be achieved on the fire source when fire occurs, provide a kind of fireproof door of convenient dismounting replacement.
[0006] In order to achieve the above object, the technical scheme of the utility model is: a fireproof door convenient to disassemble and replace, including both side door frames and a top door frame, the top door frame is composed of a first top frame and a second top frame which are spliced with each other, a door body is movably installed between the door frames, the door body comprises a door plate and a fireproof plate, the fireproof plate is detachably and slidably arranged on the outer wall of the door plate, an installation cavity is formed in the door plate, a fireproof plate one and a fireproof plate two are installed in the installation cavity, a limiting plate for sealing the fireproof plate one and the fireproof plate two is installed on the outer side of the installation cavity, symmetrical grooves are further formed in the two sides of the installation cavity, a return spring is connected in the groove, the outer side of the return spring is connected with a top plate abutting against the inner wall of the limiting plate.
[0007] As a further scheme of the utility model: the bottom of the fireproof plate is fixedly provided with symmetrical sliding rails, and the outer wall of the door plate is provided with a sliding groove matched with the sliding rails.
[0008] As a further scheme of the utility model: the top of the limiting plate is provided with symmetrical screw holes one, screw holes two matched with the screw holes one are formed in the door plate and the fireproof plate, and a first bolt for fixing the limiting plate is threadedly installed on the fireproof plate.
[0009] As a further scheme of the utility model: the fireproof plate one and the fireproof plate two are both made of glass-magnesium fireproof plate.
[0010] As a further scheme of the utility model: the top of the side door frame is provided with a first splicing cavity, the outer wall of the first top frame and the second top frame is provided with a second splicing cavity matched with the first splicing cavity, a splicing ring is installed in the first splicing cavity and the second splicing cavity, and a second bolt is screw-installed on the splicing ring.
[0011] As a further scheme of the utility model: symmetrical handles are installed on the outer walls of the door plate and the fireproof plate.
[0012] As a further scheme of the utility model: the inner side of the second top frame is provided with a plurality of plug blocks, and the inner wall of the first top frame is provided with plug grooves matched with the plug blocks.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The utility model discloses a door body quick dismounting through the mutual cooperation of slide rail and slide groove, and the door plate, fireproof plate and limiting plate are fixed through bolt in use. When needing to replace fireproof board no. 1 and fireproof board no. 2, the first bolt is disassembled through external tool, and the limiting plate automatically pops out outward under the action of both sides reset spring at this time. When needing to remove the door frame, first, splice ring is removed, then first top frame and second top frame are removed, and finally both sides side door frame are removed, and the design improves the fireproof performance and freedom of the fireproof door of this convenient dismounting replacement. BRIEF DESCRIPTION OF DRAWINGS
[0015] The utility model will be explained further below in combination with the drawings and examples:
[0016] Figure 1 It is the three-dimensional structure diagram of the utility model;
[0017] Figure 2 It is the sectional view of top door frame in the utility model;
[0018] Figure 3 It is the three-dimensional structure diagram of door plate in the utility model;
[0019] Figure 4 It is the internal three-dimensional structure diagram of door plate in the utility model;
[0020] Figure 5 It is the partial sectional view of door plate in the utility model;
[0021] Figure 6 It is the three-dimensional structure diagram of limiting plate in the utility model.
[0022] BRIEF DESCRIPTION OF DRAWINGS:
[0023] 1, door plate;2, fireproof plate;3, slide rail;4, slide groove;5, installation cavity;6, fireproof board no. 1;7, fireproof board no. 2;8, limiting plate;9, slot;10, reset spring;11, top plate;12, screw hole no. 1;13, screw hole no. 2;14, first bolt;15, handle;16, side door frame;17, first splice cavity;18, top door frame;19, first top frame;20, second top frame;21, second splice cavity;22, splice ring;23, second bolt;24, insert block;25, insert groove. DETAILED DESCRIPTION
[0024] The utility model will be explained further below in combination with the drawings and examples: Figures 1 to 6 The technical scheme of the utility model is described clearly and completely, and obviously, the described example is only a part of the utility model, not all. Based on the example in the utility model, all other examples obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.
[0025] The utility model discloses a convenient dismounting and replacing fireproof door improves at this and provides, like Figures 1 to 6 As shown, including both sides' side door frame 16 and top's top door frame 18, and top door frame 18 is formed by mutually spliced first top frame 19 and second top frame 20;Door body is movably installed between side door frame 16, and door body includes door panel 1 and fireproof plate 2, and fireproof plate 2 is detachably slidably arranged on the outer wall of door panel 1;The inside of door panel 1 is provided with installation cavity 5, and fireproof plate one 6 and fireproof plate two 7 are installed in installation cavity 5, and the outside of installation cavity 5 is provided with limiting plate 8 for sealing fireproof plate one 6 and fireproof plate two 7;The both sides of installation cavity 5 are also provided with symmetrical slot 9, and reset spring 10 is connected in slot 9, and the outside of reset spring 10 is connected with the inner wall abutment of limiting plate 8 top plate 11.
[0026] The utility model discloses a convenient dismounting and replacing fireproof door improves at this and provides, like
[0027] Refer to the accompanying drawings Figure 3 - the accompanying drawings Figure 4 The bottom of fireproof plate 2 is fixedly provided with symmetrical slide rail 3, and the outer wall of door panel 1 is provided with slide groove 4 matched with it.
[0028] In the embodiment: in order to facilitate the quick dismounting of fireproof plate 2, so the slide rail 3 and slide groove 4 structure of mutual cooperation are designed.
[0029] Refer to the accompanying drawings Figure 3 - the accompanying drawings Figure 6 The top of limiting plate 8 is provided with symmetrical screw hole one 12, and door panel 1 and fireproof plate 2 are provided with screw hole two 13 matched with screw hole one 12, and first bolt 14 for fixing limiting plate 8 is screw mounted on fireproof plate 2.
[0030] In the embodiment: in order to fix limiting plate 8, to further facilitate the replacement of fireproof plate one 6 and fireproof plate two 7, so the first bolt 14 for fixing limiting plate 8 and closing installation cavity 5 is designed.
[0031] Refer to the accompanying drawings Figure 4 Fireproof plate one 6 and fireproof plate two 7 are made of glass magnesium fireproof plate.
[0032] In the embodiment, the inner layer of the glass magnesium fireproof plate is mineral glass magnesium fireproof material, which can resist 1500 degree high temperature, can ensure people to evacuate safely in fire and protect people from the attack of spreading fire.
[0033] Referring to the drawings Figure 1 -Referring to the drawings Figure 2 The top of the side door frame 16 is provided with a first splicing cavity 17, the outer wall of the first top frame 19 and the second top frame 20 is provided with a second splicing cavity 21 matched with the first splicing cavity 17, and a splicing ring 22 is installed in the first splicing cavity 17 and the second splicing cavity 21, and a second bolt 23 is screw-installed on the splicing ring 22.
[0034] In the embodiment, when the side door frame 16 and the top door frame 18 are spliced, the splicing ring 22 structure is designed to further fix them.
[0035] Referring to the drawings Figure 1 and the drawings Figure 3 The outer wall of the door plate 1 and the fireproof plate 2 is provided with symmetrical handles 15.
[0036] In the embodiment, the handle 15 structure is designed to facilitate the opening and closing of the door body.
[0037] Referring to the drawings Figure 1 -Referring to the drawings Figure 2 The inner side of the second top frame 20 is provided with a plurality of plug blocks 24, and the inner wall of the first top frame 19 is provided with a plug groove 25 matched with the plug blocks 24.
[0038] In the embodiment, the top door frame 18 is designed as two independent parts to be quickly assembled through the plug blocks 24 and the plug groove 25.
[0039] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and inventive features disclosed herein.
Claims
1. A fire door which is easily removed and replaced, characterised in that: The utility model provides a fireproof door, including two side door frames (16) and top door frame (18) of two sides, top door frame (18) is by first top frame (19) and second top frame (20) of mutual splicing, movable mounting has door body between side door frame (16), and door body includes door panel (1) and fireproof board (2), fireproof board (2) can be detachably slidably arranged on the outer wall of door panel (1), the inside of door panel (1) is opened and is installed cavity (5), installs fire -retardant board one (6) and fire -retardant board two (7) in cavity (5), the outside of cavity (5) is installed and is sealed to fire -retardant board one (6) and fire -retardant board two (7) limiting board (8), the both sides of cavity (5) are also opened and are symmetrical slot (9), reset spring (10) is connected in slot (9), the outside of reset spring (10) is connected with the inner wall abutment of limiting board (8) top plate (11).
2. A fire door according to claim 1, wherein: The bottom of the fireproof board (2) is fixedly provided with symmetrical slide rails (3), and the outer wall of the door panel (1) is provided with a sliding groove (4) matched therewith.
3. The fire door of claim 1, wherein: The top of the limiting plate (8) is provided with symmetrical screw holes (12), and the door panel (1) and the fireproof board (2) are provided with screw holes (13) matched with the screw holes (12), and the fireproof board (2) is threadedly provided with a first bolt (14) for fixing the limiting plate (8).
4. The fire door of claim 1, wherein: The fire -retardant board one (6) and fire -retardant board two (7) are made of glass magnesium fireproof board.
5. The fire door of claim 1, wherein: The top of the side door frame (16) is provided with a first splicing cavity (17), the outer wall of the first top frame (19) and the second top frame (20) is provided with a second splicing cavity (21) matched with the first splicing cavity (17), and the first splicing cavity (17) and the second splicing cavity (21) are provided with a splicing ring (22), and the splicing ring (22) is screw-mounted with a second bolt (23).
6. The fire door of claim 1, wherein: The outer wall of the door panel (1) and the fireproof board (2) is provided with symmetrical handles (15).
7. The fire door of claim 1, wherein: The inner side of the second top frame (20) is provided with a plurality of plug blocks (24), and the inner wall of the first top frame (19) is provided with a plug groove (25) matched therewith.
Citation Information
Patent Citations
Fireproof door convenient to disassemble and assemble
CN220395544U