Fireproof safety door

By using high-temperature resistant rubber sealing gaskets and 304 stainless steel heat insulation plates in fire doors, combined with rotating rods and connecting blocks, the problems of deformation and poor sealing of fire doors at high temperatures have been solved, achieving sealing and fire resistance in high-temperature environments, and improving fire protection effect and service life.

CN224200535UActive Publication Date: 2026-05-05SHANGHAI KAISHEN FIRE FIGHTING EQUIP INSTALLATION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI KAISHEN FIRE FIGHTING EQUIP INSTALLATION CO LTD
Filing Date
2025-05-28
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Existing fire doors are prone to deformation or damage in high-temperature environments, and their poor sealing performance leads to a decrease in fire resistance, allowing smoke and flames to easily penetrate.

Method used

The sealing gaskets made of high-temperature resistant rubber and the heat insulation plates made of 304 stainless steel, combined with the rotating rod and connecting block, ensure the sealing and fire resistance of the door gaps, and use the cavity as a heat insulation barrier to prevent fire and smoke from penetrating.

Benefits of technology

Maintaining a tight seal at high temperatures prevents fire and smoke penetration, improves fire resistance and service life, and ensures rapid repositioning and stable shape.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a fireproof safety door, and belongs to the field of fireproof safety doors, the fireproof safety door comprises a frame, a first sealing gasket is fixedly mounted on the inner wall of the frame, a safety door body is rotatably mounted on the inner wall of the frame through hinges, and second sealing gaskets are fixedly mounted on the periphery of the safety door body; a positioning block is fixedly installed on the inner wall of the frame, the inner wall of the positioning block is rotationally connected with one side of a first rotating rod, the other side of the first rotating rod is rotationally connected with a second rotating rod, and the side, away from the first rotating rod, of the second rotating rod is rotationally connected with a connecting block; the first sealing gasket and the second sealing gasket are arranged to keep elasticity at high temperature, the sealing performance of a door crack is further ensured, fire and smoke are effectively prevented from permeating through the door crack, the cavity serves as a natural heat insulation barrier, and the fireproof door has excellent fire resistance in a fire disaster, slows down penetrability of the fire and improves safety.
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Description

Technical Field

[0001] This application relates to the field of fire-resistant safety door technology, and more particularly to a fire-resistant safety door. Background Technology

[0002] Currently, fire doors, as an important fire protection facility in buildings, are widely used in various public places and civil buildings. The main function of fire doors is to prevent the spread of fire within a certain period of time, providing valuable time for personnel evacuation and fire fighting.

[0003] Existing fire doors are prone to deformation or damage in high-temperature environments, resulting in a decrease in fire resistance. Furthermore, some fire doors have poor sealing performance, allowing smoke and flames to penetrate through gaps, thus affecting the fire resistance effect and causing smoke and dust to fill the escape route, compromising safety. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a fireproof safety door that overcomes the deficiencies of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: a fireproof safety door, comprising a frame, a sealing gasket 1 fixedly installed on the inner wall of the frame, a safety door body rotatably installed on the inner wall of the frame via a hinge, sealing gaskets 2 fixedly installed on all four sides of the safety door body, a positioning block fixedly installed on the inner wall of the frame, a rotating rod 1 rotatably connected to one side of the inner wall of the positioning block, a rotating rod 2 rotatably connected to the other side of the rotating rod 1, and a rotating rod 2 rotatably connected to a connecting block on the side of the rotating rod 2 away from the rotating rod 1.

[0006] In a preferred embodiment, the safety door body includes an inner steel plate and an outer steel plate, which are welded together. A heat insulation plate is fitted into the inner wall of the inner and outer steel plates, and a cavity is formed in the inner wall of the heat insulation plate.

[0007] By adopting the above technical solutions, the cavity can serve as a natural heat insulation barrier, exhibiting excellent fire resistance in fires, slowing the penetration of fire, and increasing service life.

[0008] In a preferred embodiment, both the second sealing gasket and the first sealing gasket are made of high-temperature resistant rubber, and the inner side of the first sealing gasket is tightly fitted to the outer wall of the second sealing gasket.

[0009] By adopting the above technical solutions, the door can maintain its elasticity at high temperatures, further ensuring the sealing of the door gaps and effectively preventing fire and smoke from penetrating through the gaps. Furthermore, the use of heat insulation panels ensures that the inner and outer steel plates will not easily deform after being subjected to high temperatures.

[0010] In a preferred embodiment, a bolt hole is provided through the outer side of the second sealing gasket, and the bolt hole extends through the second sealing gasket to the inner wall of the safety door body, and a screw is threaded onto the inner wall of the bolt hole.

[0011] By adopting the above technical solution, the sealing gasket can be stably installed on the outer wall of the safety door body using bolt holes and screws, thus ensuring that the bolt holes can be stably installed on the outer wall of the safety door body.

[0012] In a preferred embodiment, the connecting block is fixedly installed on the outer wall of the safety door body.

[0013] By adopting the above technical solution, the rotating rod two can be connected to the safety door body, further strengthening the stability of the connection between the frame and the safety door body, and ensuring that the safety door body can quickly reset when closed.

[0014] In a preferred embodiment, handles are rotatably mounted on the inner walls of both the inner and outer steel plates.

[0015] By adopting the above technical solution, the safety door body can be opened by the user rotating it.

[0016] In a preferred embodiment, the heat insulation board is made of 304 stainless steel.

[0017] By adopting the above technical solution, it has excellent high temperature resistance and can maintain a stable shape in high temperature environments without easily deforming or being damaged.

[0018] The beneficial effects of this application are:

[0019] 1. This fireproof safety door, by setting sealing gasket one and sealing gasket two to maintain elasticity at high temperatures, further ensures the sealing performance of the door gaps, effectively preventing fire and smoke from penetrating through the door gaps. Through the cavity as a natural heat insulation barrier, it has excellent fire resistance in fire, slows down the penetration of fire, and improves safety.

[0020] 2. This fireproof safety door, by setting a first rotating rod and a second rotating rod, can be used to pull the safety door body, thereby ensuring that the safety door body can be quickly reset when closed. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 This is a schematic diagram of the overall rear view structure of this application;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the frame in this application;

[0024] Figure 4 This is a partial structural diagram of this application;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the outer steel plate of this application;

[0026] Figure 6 This is a schematic diagram of the sealing gasket structure of this application.

[0027] The following are the labels in the diagram: 1. Frame; 2. Sealing gasket one; 3. Hinge; 4. Safety door body; 401. Inner steel plate; 402. Outer steel plate; 403. Heat insulation board; 404. Cavity; 5. Sealing gasket two; 6. Bolt hole; 7. Handle; 8. Positioning block; 9. Rotating rod one; 10. Rotating rod two; 11. Connecting block. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0029] Reference Figure 1-6 A fireproof safety door includes a frame 1, a sealing gasket 2 fixedly installed on the inner wall of the frame 1, a safety door body 4 rotatably installed on the inner wall of the frame 1 via a hinge 3, sealing gaskets 5 fixedly installed on all four sides of the safety door body 4, a positioning block 8 fixedly installed on the inner wall of the frame 1, a rotating rod 9 rotatably connected to one side of the inner wall of the positioning block 8, a rotating rod 10 rotatably connected to the other side of the rotating rod 9, and a connecting block 11 rotatably connected to the side of the rotating rod 10 away from the rotating rod 9.

[0030] See Figure 5 The safety door body 4 includes an inner steel plate 401 and an outer steel plate 402, which are welded together. The inner steel plate 401 and the outer steel plate 402 are fitted with heat insulation plates 403 on their inner walls. The inner wall of the heat insulation plate 403 has a cavity 404, which can act as a natural heat insulation barrier. It has excellent fire resistance in a fire, slows down the penetration of fire, and improves service life.

[0031] See Figure 2 and Figure 6 Both sealing gasket 25 and sealing gasket 12 are made of high-temperature resistant rubber, and the inner side of sealing gasket 12 is tightly fitted with the outer wall of sealing gasket 25, so that it can maintain elasticity at high temperature, further ensuring the sealing of the door gap, effectively preventing fire and smoke from penetrating through the door gap, and the use of heat insulation plate 403 can ensure that the inner steel plate 401 and the outer steel plate 402 will not easily deform after being subjected to high temperature.

[0032] See Figure 6 A bolt hole 6 is provided through the outer side of the sealing gasket 2 5, and the bolt hole 6 extends through the sealing gasket 2 5 to the inner wall of the safety door body 4. A screw is threaded on the inner wall of the bolt hole 6, so that the sealing gasket 2 5 can be stably installed on the outer wall of the safety door body 4 by using the bolt hole 6 and the screw.

[0033] See Figure 3 and Figure 4 The connecting block 11 is fixedly installed on the outer wall of the safety door body 4, so that the rotating rod 10 can be connected to the safety door body 4, further strengthening the stability of the connection between the frame 1 and the safety door body 4, and ensuring that the safety door body 4 can be quickly reset when closed.

[0034] See Figure 3 Both the inner steel plate 401 and the outer steel plate 402 have handles 7 rotatably installed on their inner walls, allowing the user to rotate the safety door body 4 to open it.

[0035] See Figure 5 The heat insulation board 403 is made of 304 stainless steel, which gives it excellent high temperature resistance and allows it to maintain a stable shape in high temperature environments without easily deforming or being damaged.

[0036] Working principle: When using this device, the cavity 404 can first be used as a natural heat insulation barrier, which has excellent fire resistance in fire, slows down the penetration of fire, and improves service life. In addition, the sealing gaskets 1 and 2 maintain elasticity at high temperatures, further ensuring the sealing of the door gaps and effectively preventing fire and smoke from penetrating through the door gaps. The heat insulation plate 403 can ensure that the inner steel plate 401 and the outer steel plate 402 will not easily deform after being subjected to high temperatures. At the same time, the handle 7 can be used to quickly open and close the safety door body 4. The rotating rods 1 and 2 can be used to pull the safety door body 4, thereby ensuring that the safety door body 4 can quickly return to its original position when closed.

[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A fireproof safety door, comprising a frame (1), characterized in that, A sealing gasket 1 (2) is fixedly installed on the inner wall of the frame (1). A safety door body (4) is rotatably installed on the inner wall of the frame (1) via a hinge (3). A sealing gasket 2 (5) is fixedly installed on all four sides of the safety door body (4). A positioning block (8) is fixedly installed on the inner wall of the frame (1). One side of the positioning block (8) is rotatably connected to one side of the rotating rod 1 (9). The other side of the rotating rod 1 (9) is rotatably connected to the rotating rod 2 (10). The side of the rotating rod 2 (10) away from the rotating rod 1 (9) is rotatably connected to the connecting block (11).

2. A fireproof safety door according to claim 1, characterized in that, The safety door body (4) includes an inner steel plate (401) and an outer steel plate (402), which are welded together. The inner steel plate (401) and the outer steel plate (402) are fitted with heat insulation plates (403) on their inner walls, and the inner walls of the heat insulation plates (403) are provided with cavities (404).

3. A fireproof safety door according to claim 1, characterized in that, Both the sealing gasket 2 (5) and the sealing gasket 1 (2) are made of high temperature resistant rubber, and the inner side of the sealing gasket 1 (2) is in close contact with the outer wall of the sealing gasket 2 (5).

4. A fireproof safety door according to claim 1, characterized in that, The outer side of the sealing gasket 2 (5) is provided with a bolt hole (6), and the bolt hole (6) extends through the sealing gasket 2 (5) to the inner wall of the safety door body (4). The inner wall of the bolt hole (6) is threaded with a screw.

5. A fireproof safety door according to claim 1, characterized in that, The connecting block (11) is fixedly installed on the outer wall of the safety door body (4).

6. A fireproof safety door according to claim 2, characterized in that, The inner steel plate (401) and the outer steel plate (402) are both rotatably equipped with handles (7).

7. A fireproof safety door according to claim 2, characterized in that, The heat insulation board (403) is made of 304 stainless steel.