Split type intelligent fireproof door
By designing a split-type intelligent fire door and utilizing a fire-resistant motor-driven gear meshing structure, the escape route can be opened automatically or manually during a fire. This solves the problem of traditional fire doors being unable to open due to frame deformation or lock malfunction, ensuring the safe evacuation of personnel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional fire doors cannot be opened normally during a fire due to deformation of the door frame or malfunction of the lock, which hinders the evacuation of people. They also lack intelligent design and cannot meet the needs of safe evacuation.
A split-type intelligent fire door was designed, which includes a fire door body, an escape passage, fireproof hinges, a rotating shaft, a large gear, a toothed plate, a locking groove, and other structures. The escape passage is automatically opened by the gear meshing driven by a fireproof motor. It is also equipped with a temperature sensor and an audible and visual alarm to ensure the opening of the personnel escape passage.
In the event of a fire, escape routes can be opened automatically or manually, providing additional escape paths to avoid casualties caused by obstructed evacuation and ensure the safe evacuation of personnel.
Smart Images

Figure CN224120158U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire door technology, specifically a split-type intelligent fire door. Background Technology
[0002] Fire doors are doors that can meet the requirements of fire resistance stability and heat insulation within a certain period of time. They are fire-resistant partitions with a certain degree of fire resistance, installed in fire-resistant compartments, evacuation stairwells, vertical shafts, and other similar locations.
[0003] Traditional fire doors are mostly one-piece structures. In the event of a fire, if the door frame deforms or the lock malfunctions, making it impossible to open normally, people inside the room will have difficulty escaping quickly, and their lives will be seriously threatened. In addition, existing fire doors have relatively simple functions and lack intelligent designs to cope with fire scenarios, making it difficult to meet people's higher requirements for fire protection and safe evacuation.
[0004] Therefore, it is necessary to study a split-type intelligent fire door. Utility Model Content
[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a split-type intelligent fire door that, in the event of a fire, provides an additional escape route for personnel if the door cannot be opened normally due to force majeure factors such as door frame deformation or lock malfunction, effectively avoiding casualties caused by obstructed evacuation.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a split-type intelligent fire door, comprising a fire door body, a fire door frame on the surface of the fire door body, an escape passage below the surface of the fire door body, fire-resistant hinges fixedly connected to the bottom of both ends of the escape passage, a lower door body fixedly connected to the inner wall of the fire-resistant hinges, and the lower door body cooperating with the escape passage, a storage groove provided inside the lower door body, a rotating shaft rotatably connected inside the storage groove, a large gear fixedly connected to the surface of the rotating shaft, toothed plates slidably connected to the top and bottom of the storage groove, and the toothed plates meshing with the large gear, a locking groove provided on the inner wall of the escape passage, sliding openings provided on both sides of the storage groove, a locking pin fixedly connected to the other end of the toothed plate, and the locking pin slidably connected to the sliding opening and engaging with the locking groove.
[0007] As a preferred embodiment of this utility model, the inner wall of the storage slot is provided with an installation slot, and a fireproof motor is fixedly connected inside the installation slot. A small gear is fixedly connected to the output end of the fireproof motor, and the small gear meshes with a large gear.
[0008] As a preferred embodiment of this invention, the inner wall of the escape passage is fixedly connected with a fireproof sealing strip, and the fireproof sealing strip is used in conjunction with the lower door.
[0009] As a preferred embodiment of this utility model, a fixing block is fixedly connected to the inner wall of the storage groove, and the fixing block is slidably connected to the toothed plate. A limiting groove is opened at the end of the toothed plate away from the locking post. A limiting post is fixedly connected inside the storage groove, and the limiting post is slidably connected to the limiting groove.
[0010] As a preferred embodiment of this utility model, an audible and visual alarm is symmetrically and fixedly connected to the surface of the lower door, a temperature sensor is fixedly connected to the wall of the storage slot, and the probe of the temperature sensor is in contact with the lower door. A fireproof battery and a controller are fixedly connected to the inside of the storage slot.
[0011] As a preferred embodiment of this utility model, fireproof torsion blocks are fixedly connected to both the front and back of the lower door body, and the fireproof torsion blocks are fixedly connected to the rotating shaft.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. This utility model, through the cooperation of fireproof door body, fireproof door frame, escape passage, fireproof hinge, lower door body storage groove, large gear, toothed plate, locking groove, sliding mouth and locking post, can provide an additional escape passage for personnel when the door cannot be opened normally due to force majeure factors such as door frame deformation or lock failure during a fire, effectively avoiding casualties caused by obstructed evacuation.
[0014] 2. This utility model, through the setting of fireproof motor and small gear, can drive the small gear to rotate, which in turn can drive the large gear to rotate, thereby enabling the tooth plate to slide and drive the locking pin to leave the locking groove, thus opening the escape passage. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a partial three-dimensional cross-sectional view of the fire door body and fire door frame used in conjunction with this utility model;
[0017] Figure 3 This is a three-dimensional schematic diagram of the fireproof door body and escape route of this utility model used together;
[0018] Figure 4 This is a partial cross-sectional perspective view of the lower door body of this utility model.
[0019] In the diagram: 1. Fire door body; 2. Fire door frame; 3. Escape route; 4. Fireproof hinge; 5. Lower door body; 6. Storage slot; 7. Large gear; 8. Tooth plate; 9. Locking groove; 10. Slide; 11. Locking post; 12. Fireproof motor; 13. Small gear; 14. Sealing fireproof strip; 15. Fixing block; 16. Limiting groove; 17. Limiting post; 18. Audible and visual alarm; 19. Temperature sensor. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] like Figures 1 to 4 As shown, this utility model provides a split-type intelligent fire door, including a fire door body 1, a fire door frame 2 on the surface of the fire door body 1, an escape passage 3 at the bottom of the surface of the fire door body 1, fire-resistant hinges 4 fixedly connected to the bottom of both ends of the escape passage 3, a lower door body 5 fixedly connected to the inner wall of the fire-resistant hinges 4, and the lower door body 5 cooperates with the escape passage 3. A storage groove 6 is provided inside the lower door body 5, a rotating shaft is rotatably connected inside the storage groove 6, a large gear 7 is fixedly connected to the surface of the rotating shaft, toothed plates 8 are slidably connected to the top and bottom of the storage groove 6, and the toothed plates 8 mesh with the large gear 7. A locking groove 9 is provided on the inner wall of the escape passage 3, sliding openings 10 are provided on both sides of the storage groove 6, and a locking pin 11 is fixedly connected to the other end of the toothed plate 8, and the locking pin 11 is slidably connected to the sliding opening 10 and engages with the locking groove 9.
[0022] refer to Figure 4 The inner wall of the storage slot 6 is provided with an installation slot, and a fireproof motor 12 is fixedly connected inside the installation slot. A small gear 13 is fixedly connected to the output end of the fireproof motor 12, and the small gear 13 meshes with the large gear 7.
[0023] As a technical optimization of this utility model, the fireproof motor 12 and the small gear 13 are configured to drive the small gear 13 to rotate, which in turn drives the large gear 7 to rotate, thereby enabling the tooth plate 8 to slide and drive the locking pin 11 to leave the locking groove 9, thereby opening the escape passage 3.
[0024] refer to Figure 3 The inner wall of the escape passage 3 is fixedly connected with a fireproof sealing strip 14, and the fireproof sealing strip 14 is used in conjunction with the lower door 5.
[0025] As a technical optimization of this utility model, the installation of the fireproof sealing strip 14 ensures that the overall fireproof performance of the fireproof door 1 is not affected, thus preventing the spread of fire.
[0026] refer to Figure 4 A fixing block 15 is fixedly connected to the inner wall of the storage slot 6, and the fixing block 15 is slidably connected to the toothed plate 8. A limiting groove 16 is opened at the end of the toothed plate 8 away from the locking post 11. A limiting post 17 is fixedly connected inside the storage slot 6, and the limiting post 17 is slidably connected to the limiting groove 16.
[0027] As a technical optimization of this utility model, by setting the fixing block 15, the limiting groove 16 and the limiting post 17, the movement trajectory of the toothed plate 8 can be restricted, so that it can only move linearly, avoiding the linear movement of the locking post 11 which would make it difficult to slide in the sliding mouth 10 and thus prevent the lower door 5 from opening.
[0028] refer to Figure 1 and Figure 4 A sound and light alarm 18 is symmetrically fixedly connected to the surface of the lower door body 5. A temperature sensor 19 is fixedly connected to the wall of the storage slot 6, and the probe of the temperature sensor 19 is in contact with the lower door body 5. A fireproof battery and a controller are fixedly connected inside the storage slot 6.
[0029] As a technical optimization of this utility model, the sound and light alarm 18 can guide people to escape from the lower door 5. The temperature sensor 19, fireproof battery and controller can detect the temperature of the lower door 5. When the surface temperature of the lower door 5 exceeds the set safety threshold, the controller starts the fireproof motor 12 to drive the small gear 13 to rotate, which in turn causes the large gear 7 to rotate, which pulls the toothed plate 8 to move horizontally, thereby automatically opening the lower door 5 for people to use. At this time, the fireproof battery can provide power to various electrical appliances without the need to connect to an external power supply.
[0030] refer to Figure 1 Fireproof torsion blocks are fixedly connected to both the front and back of the lower door body 5, and the fireproof torsion blocks are fixedly connected to the rotating shaft.
[0031] As a technical optimization of this utility model, by setting the fireproof torsion block, if the fireproof motor 12 malfunctions and cannot be used, people can rotate the fireproof torsion block to drive the rotating shaft and the large gear 7 to rotate, thereby manually opening the lower door 5.
[0032] The working principle and usage process of this utility model are as follows: When using this split-type intelligent fire door, firstly, the fire door frame 2 is fixed at the doorway of the building to ensure a firm installation. Then, the fire door body 1 is installed inside the fire door frame 2 using a high-temperature hinge for normal use. If, during a fire, the fire door body 1 cannot be opened normally due to force majeure factors such as deformation of the fire door frame 2 or lock malfunction, the temperature sensor 19 can detect the surface temperature of the lower door body 5. When the surface temperature of the lower door body 5 exceeds the set safety threshold, the controller automatically starts the fireproof motor 12, which drives the pinion 13 to rotate, thereby causing the large gear... When wheel 7 rotates, the large gear 7 meshes with the toothed plate 8, which in turn drives the toothed plate 8 to move horizontally, thereby pulling the locking pin 11 out of the locking groove 9 of the fire door body 1, making it easier to open the lower door body 5 for people to use. At this time, the audible and visual alarm 18 can guide people to escape through the escape passage 3 at the lower door body 5. At this time, the fireproof battery can provide power to various electrical appliances without the need to connect to an external power supply. This enables the door to be opened normally due to force majeure factors such as deformation of the fire door frame 2 or lock failure, providing an additional escape passage 3 for people and effectively avoiding casualties caused by obstructed evacuation.
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A split-type intelligent fire door, comprising a fire door body (1), characterized in that: The surface of the fireproof door body (1) is provided with a fireproof door frame (2). An escape passage (3) is provided below the surface of the fireproof door body (1). Fireproof hinges (4) are fixedly connected to the bottom of both ends of the escape passage (3). A lower door body (5) is fixedly connected to the inner wall of the fireproof hinges (4). The lower door body (5) is used in conjunction with the escape passage (3). A storage groove (6) is provided inside the lower door body (5). A rotating shaft is rotatably connected inside the storage groove (6). A large gear (7) is fixedly connected to the surface of the rotating shaft. A toothed plate (8) is slidably connected to the top and bottom of the storage groove (6), and the toothed plate (8) meshes with the large gear (7). A locking groove (9) is provided on the inner wall of the escape channel (3). Sliding openings (10) are provided on both sides of the storage groove (6). A locking pin (11) is fixedly connected to the other end of the toothed plate (8), and the locking pin (11) is slidably connected to the sliding opening (10) and engages with the locking groove (9).
2. A split-type intelligent fire door according to claim 1, characterized in that: The inner wall of the storage slot (6) is provided with an installation slot, and a fireproof motor (12) is fixedly connected inside the installation slot. A small gear (13) is fixedly connected to the output end of the fireproof motor (12), and the small gear (13) meshes with the large gear (7).
3. A split-type intelligent fire door according to claim 1, characterized in that: The inner wall of the escape passage (3) is fixedly connected with a fireproof sealing strip (14), and the fireproof sealing strip (14) is used in conjunction with the lower door (5).
4. A split-type intelligent fire door according to claim 1, characterized in that: The inner wall of the storage groove (6) is fixedly connected to a fixing block (15), and the fixing block (15) is slidably connected to the toothed plate (8). A limiting groove (16) is opened at one end of the toothed plate (8) away from the locking post (11). A limiting post (17) is fixedly connected inside the storage groove (6), and the limiting post (17) is slidably connected to the limiting groove (16).
5. A split-type intelligent fire door according to claim 1, characterized in that: A sound and light alarm (18) is symmetrically fixedly connected to the surface of the lower door (5), a temperature sensor (19) is fixedly connected to the wall of the storage slot (6), and the probe of the temperature sensor (19) is in contact with the lower door (5). A fireproof battery and a controller are fixedly connected inside the storage slot (6).
6. A split-type intelligent fire door according to claim 5, characterized in that: Fireproof twisting blocks are fixedly connected to both the front and back of the lower door body (5), and the fireproof twisting blocks are fixedly connected to the rotating shaft.