Impact-resistant steel fireproof door
By introducing buffer and fireproof structures into fire doors, including buffer seats, spring shock absorbers, and high-pressure water tanks, the problem of deformation and damage of traditional fire doors under external impact is solved, achieving higher impact resistance and fire resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU FUYANG JIANDUN DOOR & WINDOW TECH CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional steel fire doors lack an effective buffering mechanism when faced with external impacts, leading to door deformation and damage, which affects their service life and safety.
The design incorporates a buffer and fireproof structure, including a buffer seat, spring shock absorbers, protective rubber rings, and a high-pressure water tank. The buffer seat guides the air within the buffer chamber, while the spring shock absorbers reduce the impact force. The protective rubber rings provide secondary buffering, and the water in the high-pressure water tank absorbs heat to slow the fire's spread.
It improves the door's impact resistance, enhances its fire resistance and safety, prevents external smoke from entering, and extends its service life.
Smart Images

Figure CN224260211U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a fire door, specifically an impact-resistant steel fire door. Background Technology
[0002] Traditional steel fire doors often lack effective cushioning mechanisms when facing external impacts, such as violent collisions or accidental impacts. Their structure is typically quite rigid, so when subjected to impact, the force is directly transmitted to the door structure, easily leading to deformation, damage, and even affecting the door's normal use and safety. For example, in public places such as shopping malls and schools, where there is high pedestrian traffic, accidental collisions may impact fire doors, which traditional fire doors cannot withstand, thus shortening their lifespan. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an impact-resistant steel fire door to solve the problems existing in the background art.
[0004] This utility model of an impact-resistant steel fire door is achieved through the following technical solution, including a door body and an impact-resistant door panel;
[0005] The front of the door body is provided with a buffer cavity, and the impact-resistant door panel is set in the buffer cavity through a buffer structure. When the impact-resistant door panel is impacted, it is buffered by the buffer structure; the impact-resistant door panel is provided with a fireproof structure inside.
[0006] As a preferred technical solution, the buffer structure includes a buffer seat and a spring shock absorber;
[0007] The buffer seat is provided with mounting positions on all four sides, and the spring shock absorber is installed in the mounting position; the other end of the spring shock absorber is placed in the shock absorption groove of the buffer cavity. When the impact-resistant door panel is impacted, the buffer seat is guided in the buffer cavity and the impact force is reduced by the spring shock absorber.
[0008] As a preferred technical solution, there is a gap between the door body and the impact-resistant door panel. A protective rubber ring is bonded to the gap, and the protective rubber ring is in contact with both the door body and the impact-resistant door panel. When the impact-resistant door panel is impacted, the protective rubber ring is squeezed and deformed, thereby playing a secondary buffering role.
[0009] As a preferred technical solution, the fireproof structure includes a heat insulation board and a high-pressure water tank;
[0010] The impact-resistant door panel has a hollow interior forming a fireproof cavity, and a high-pressure water tank is installed inside the fireproof cavity.
[0011] The high-pressure water tank is made of metal with good impact resistance. The high-pressure water tank is in a closed state and is filled with water. When a fire occurs, heat is transferred to the high-pressure water tank, and the water inside absorbs the heat. Because the high-pressure water tank is in a sealed state, the internal moisture is not easily evaporated, thus further slowing down the spread of the fire. The high-pressure water tank is shielded by a heat insulation board, forming a double-layer fireproof effect through the heat insulation board and the high-pressure water tank.
[0012] As a preferred technical solution, the fireproof structure includes a guide groove on the side of the buffer cavity, and a guide block corresponding to the guide groove is provided on the buffer seat of the impact-resistant door panel.
[0013] The buffer seat is positioned within the buffer cavity by means of a guide groove and a guide block, thereby fixing the impact-resistant door panel.
[0014] As a preferred technical solution, a sealing ring is provided on the outer side of the protective rubber ring to prevent external smoke from entering when the door body is closed.
[0015] The beneficial effects of this utility model are:
[0016] This utility model's impact-resistant door panel incorporates a buffer structure within the buffer cavity of the door body. The buffer structure includes a buffer seat and a spring shock absorber. When the impact-resistant door panel is subjected to impact, the buffer seat guides the door within the buffer cavity, while the spring shock absorber reduces the impact force. Simultaneously, a protective rubber ring is installed at the gap between the door body and the impact-resistant door panel. When subjected to impact, the protective rubber ring is squeezed and deformed, providing a secondary buffering effect and effectively enhancing the door's impact resistance.
[0017] This utility model features an impact-resistant door panel with a hollow interior forming a fireproof cavity. A high-pressure water tank is installed and shielded by a heat insulation board, forming a double-layer fireproof structure that provides excellent heat insulation and enhances fire resistance.
[0018] The protective rubber ring of this invention extends to the outer side to form a sealing rubber ring, which can prevent external smoke from entering when the door body is closed, thus improving safety. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0021] Figure 2 and Figure 3 This is a schematic diagram of the exploded structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the impact-resistant door panel structure of this utility model.
[0023] Explanation of reference numerals in the attached figures
[0024] 1. Door body; 2. Impact-resistant door panel; 3. Buffer cavity; 4. Buffer seat; 5. Spring shock absorber; 6. Mounting position; 7. Vibration damping groove; 8. Protective rubber ring; 9. Fireproof cavity; 10. Heat insulation board; 11. High-pressure water tank; 12. Sealing rubber ring. Detailed Implementation
[0025] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.
[0026] like Figures 1-4 As shown, the present invention provides an impact-resistant steel fire door, comprising a door body 1 and an impact-resistant door panel 2.
[0027] The front of the door body 1 is provided with a buffer cavity 3, and the impact-resistant door panel 2 is set in the buffer cavity 3 through a buffer structure. When the impact-resistant door panel 2 is impacted, it is buffered by the buffer structure. The impact-resistant door panel 2 is provided with a fireproof structure inside.
[0028] The buffer structure includes a buffer seat 4 and a spring shock absorber 5.
[0029] The buffer seat 4 is provided with mounting positions 6 on all four sides, and the spring shock absorber 5 is installed in the mounting position 6; the other end of the spring shock absorber 5 is placed in the shock absorption groove 7 of the buffer cavity 3. When the impact-resistant door panel 2 is impacted, the buffer seat 4 is guided in the buffer cavity 3 and the impact force is reduced by the spring shock absorber 5.
[0030] There is a gap between the door body 1 and the impact-resistant door panel 2. A protective rubber ring 8 is bonded to the gap and is in contact with both the door body 1 and the impact-resistant door panel 2. When the impact-resistant door panel 2 is impacted, the protective rubber ring 8 is squeezed and deformed, thus playing a secondary buffering role.
[0031] In order to achieve the effect of heat insulation, in this embodiment, the fireproof structure includes a heat insulation board 10 and a high-pressure water tank 11;
[0032] The impact-resistant door panel 2 has a hollow interior forming a fireproof cavity 9, and a high-pressure water tank 11 is installed inside the fireproof cavity 9 and shielded by a heat insulation board 10. The heat insulation board 10 and the high-pressure water tank 11 form a double-layer fireproof effect.
[0033] The high-pressure water tank is made of metal material with good impact resistance. The high-pressure water tank is in a closed state and is filled with water. When a fire occurs, heat is transferred to the high-pressure water tank and absorbed by the water inside. Because the high-pressure water tank is in a sealed state, the internal water is not easily evaporated, thus further slowing down the spread of the fire.
[0034] Among them, the fireproof structure includes a guide groove on the side of the buffer cavity 3, and a guide block corresponding to the guide groove is provided on the buffer seat 4 of the impact-resistant door panel 2.
[0035] The buffer seat 4 is positioned within the buffer cavity 3 by means of a guide groove and a guide block, thereby fixing the impact-resistant door panel 2.
[0036] In order to prevent smoke from entering, in this embodiment, a sealing ring 12 is provided on the outer side of the protective rubber ring 8 to prevent external smoke from entering when the door body 1 is in the closed state.
[0037] Both the door body and the impact-resistant door panel are made of steel, and both the door body and the impact-resistant door panel are equipped with a heat-insulating coating.
[0038] This utility model's impact-resistant door panel incorporates a buffer structure within the buffer cavity of the door body. The buffer structure includes a buffer seat and a spring shock absorber. When the impact-resistant door panel is subjected to impact, the buffer seat guides the door within the buffer cavity, while the spring shock absorber reduces the impact force. Simultaneously, a protective rubber ring is installed at the gap between the door body and the impact-resistant door panel. When subjected to impact, the protective rubber ring is squeezed and deformed, providing a secondary buffering effect and effectively enhancing the door's impact resistance.
[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.
Claims
1. An impact-resistant steel fire door, characterized in that, Includes the door body (1) and the impact-resistant door panel (2); The front of the door body (1) is provided with a buffer cavity (3), and the impact-resistant door panel (2) is set in the buffer cavity (3) through a buffer structure. When the impact-resistant door panel (2) is impacted, it is buffered by the buffer structure. The impact-resistant door panel (2) is provided with a fireproof structure inside.
2. The impact-resistant steel fire door of claim 1, wherein: The buffer structure includes a buffer seat (4) and a spring shock absorber (5); The buffer seat (4) is provided with mounting positions (6) on all four sides, and the spring shock absorber (5) is installed in the mounting position (6); the other end of the spring shock absorber (5) is placed in the shock absorption groove (7) of the buffer cavity (3). When the impact-resistant door panel (2) is impacted, the buffer seat (4) is guided in the buffer cavity (3) and the impact force is reduced by the spring shock absorber (5).
3. The impact-resistant steel fire door of claim 1, wherein: There is a gap between the door body (1) and the impact-resistant door panel (2). A protective rubber ring (8) is bonded to the gap and is in contact with the door body (1) and the impact-resistant door panel (2) respectively. When the impact-resistant door panel (2) is impacted, the protective rubber ring (8) is squeezed and deformed, thus playing a secondary buffering role.
4. The impact-resistant steel fire door of claim 1, wherein: The fireproof structure includes a heat insulation board (10) and a high-pressure water tank (11); The impact-resistant door panel (2) has a hollow interior forming a fireproof cavity (9), and a high-pressure water tank (11) is installed inside the fireproof cavity (9). The high-pressure water tank (11) is made of metal material with good impact resistance. The high-pressure water tank (11) is in a closed state and is filled with water. When a fire occurs, heat is transferred to the high-pressure water tank, and the water in the high-pressure water tank absorbs the heat. The high-pressure water tank (11) is shielded by a heat insulation plate (10), and the heat insulation plate (10) and the high-pressure water tank (11) form a double-layer fireproof effect.
5. The impact-resistant steel fire door of claim 1, wherein: The fireproof structure includes a guide groove on the side of the buffer cavity (3) and a guide block corresponding to the guide groove on the buffer seat (4) of the impact-resistant door panel (2). The buffer seat (4) is positioned in the buffer cavity (3) by means of a guide groove and a guide block, thereby fixing the impact-resistant door panel (2).
6. The impact-resistant steel fire door of claim 1, wherein: A sealing ring (12) is provided on the outer side of the protective rubber ring (8) to prevent external smoke from entering when the door body (1) is closed.