Temperature control locking structure applied to fireproof door

Abstract

The utility model discloses a temperature control locking structure applied to a fireproof door, which relates to the technical field of fireproof doors and comprises a door frame, a first door plate, a second door plate, a first traction block and a limiting column. The linkage mechanism comprises a first door plate, a second door plate, a first traction block, a first driving block, a threaded rod, a second driving block, a second traction block and a door handle, the first driving block, the threaded rod and the second driving block serve as core components, synchronous closing and opening can be achieved under cooperation of the first traction block and the second traction block, and the automatic door closing function is achieved; when a fire breaks out, manual operation is not needed, the fireproof door can be closed in time, and time is bought for personnel evacuation and fire rescue.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, specifically a temperature-controlled locking structure applied to fire doors. Background Technology

[0002] Fire doors are doors with special functions that play a crucial role in building fire safety. They are doors that, along with their frame, can meet requirements for fire resistance stability, integrity, and thermal insulation for a certain period of time. However, existing fire doors have some shortcomings, such as:

[0003] The steel fire door described in application number CN202420953038.X lacks an automatic locking structure. While the normally open fire door is open for easy access, it cannot effectively prevent the spread of fire in the event of a fire due to its lack of automatic closing function. Utility Model Content

[0004] The purpose of this utility model is to provide a temperature-controlled locking structure for fire doors, in order to solve the problem mentioned in the background art that existing market equipment is not equipped with an automatic locking structure, and normally open fire doors are in the open state under normal circumstances, which facilitates personnel entry and exit. However, once a fire occurs, they do not have an automatic closing function and cannot play a timely role in preventing the spread of fire.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a temperature-controlled locking structure for fire doors, comprising a door frame, a first door panel, a second door panel, a first traction block, and a limiting post;

[0006] The door frame is equipped with a linkage mechanism, which includes a first door panel, a second door panel, a first traction block, a first drive block, a threaded rod, a second drive block, a second traction block, and a door handle. The first drive block, the threaded rod, and the second drive block are core components, and can achieve synchronous opening and closing with the cooperation of the first traction block and the second traction block.

[0007] A temperature control mechanism is provided on the side of the first traction block. The temperature control mechanism includes a guide rail, a fixed rod, a spring, a hot melt plate, and a limiting post. The hot melt plate, as a core component, will quickly melt and break after the temperature reaches the melting point, thereby releasing the limiting function and releasing the spring, thus achieving the traction and door closing function.

[0008] As a preferred technical solution of this utility model, the door frame has an I-shaped structure, and a first door panel and a second door panel are hinged inside the door frame. The contact surfaces of the first door panel and the second door panel are interlocked with each other. Door handles are fixedly connected to the surfaces of the first door panel and the second door panel, and the positions of the door handles are relatively distributed.

[0009] Using the above technical solution, a fireproof sealing strip is provided on the inner surface of the door frame. When the first door panel and the second door panel are closed, the fireproof sealing strip is tightly attached to the edge of the door panel, further improving the fireproof and heat insulation performance of the fire door. At the same time, fireproof and heat insulation materials are filled inside the first door panel and the second door panel to enhance the overall fireproof effect of the fire door.

[0010] As a preferred technical solution of this utility model, a second traction block is fixedly connected to the surface of the first door panel, a first traction block is fixedly connected to the surface of the second door panel, and the first traction block and the second traction block are distributed in parallel, and the second traction block has an L-shaped structure.

[0011] By adopting the above technical solution, the device can ensure that the parallel force of the drive makes the door open synchronously by setting the second traction block to an L-shaped structure, thus preventing wind pressure from being generated.

[0012] As a preferred technical solution of this utility model, in the linkage mechanism, the first driving block is mounted on top of the first traction block, and the second driving block is mounted on top of the second traction block, and the first traction block and the second traction block are threadedly connected by a threaded rod.

[0013] Using the above technical solution, the first traction block and the second traction block of the device are connected by a threaded rod, which has a simple structure and good maintenance convenience.

[0014] As a preferred technical solution of this utility model, the fixing rod in the temperature control mechanism is fixedly connected to the side of the door frame, and the fixing rods are rotatably connected to the limiting post;

[0015] By adopting the above technical solution, the device can improve the integration of the equipment by fixing the fixing rod to the side of the door frame, ensuring consistent traction force and preventing deformation caused by force deviation of the door frame.

[0016] As a preferred technical solution of this utility model, the limiting post is slidably connected to the right side of the guide rail, the guide rail has a T-shaped structure, and the first traction block is slidably connected to the left side of the guide rail. The right side of the guide rail is fixedly connected to a spring, and there are two springs symmetrically distributed. Hot melt plates are fitted on both the upper and lower ends of the limiting post and the guide rail.

[0017] Using the above technical solution, the device achieves synchronous opening and closing of the first and second door panels through a linkage mechanism, which is convenient for daily use. In the event of a fire, the thermoplastic plate in the temperature control mechanism melts and the spring releases its elasticity, pulling the first and second traction blocks, thereby causing the first and second door panels to close quickly and preventing the spread of fire and smoke.

[0018] As a preferred embodiment of this invention, the hot melt plate is cast from a high-strength tin-bismuth alloy.

[0019] Using the above technical solution, the equipment uses a high-strength tin-bismuth alloy with a melting point of 138°C, which is lower than that of other metal alloys. This results in a lower heating temperature required during processing and forming, reducing energy consumption and minimizing wear and tear on the equipment caused by high-temperature processing.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. Equipped with automatic door closing function, it can close the fire door in a timely manner without manual operation in the event of a fire, thus buying time for personnel evacuation and fire rescue.

[0022] 2. The structure is reasonably designed, and the linkage mechanism and temperature control mechanism work together to ensure high stability and strong reliability;

[0023] 3. By installing fireproof sealing strips and filling with fireproof and heat-insulating materials, the fireproof and heat-insulating performance of fire doors is improved, effectively reducing fire losses. Attached Figure Description

[0024] Figure 1 This is a side view of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the door frame and the first door panel structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the second traction block and the door handle of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the second door panel and the first traction block of this utility model;

[0028] Figure 5 This is a schematic diagram of the spring and hot melt plate structure of this utility model;

[0029] Figure 6 This is a schematic diagram of the guide rail and hot melt plate structure of this utility model.

[0030] In the diagram: 1. Door frame; 2. First door panel; 3. Second door panel; 4. First traction block; 5. Guide rail; 6. First drive block; 7. Threaded rod; 8. Second drive block; 9. Second traction block; 10. Door handle; 11. Fixing rod; 12. Spring; 13. Hot melt plate; 14. Limiting post. Detailed Implementation

[0031] 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.

[0032] Please see Figure 1 - Figure 6 The present invention provides a temperature-controlled locking structure for fire doors, comprising a door frame 1, a first door panel 2, a second door panel 3, a first traction block 4, a guide rail 5, a first drive block 6, a threaded rod 7, a second drive block 8, a second traction block 9, a door handle 10, a fixing rod 11, a spring 12, a hot melt plate 13, and a limiting post 14.

[0033] A linkage mechanism is installed inside the door frame 1. This mechanism includes a first door panel 2, a second door panel 3, a first traction block 4, a first drive block 6, a threaded rod 7, a second drive block 8, a second traction block 9, and a door handle 10. Among them, the first drive block 6, the threaded rod 7, and the second drive block 8 are the core components of the linkage mechanism. With the cooperation of the first traction block 4 and the second traction block 9, they can realize the synchronous closing and opening of the first door panel 2 and the second door panel 3.

[0034] The door frame 1 has an I-shaped structure. This structural design helps to improve the overall stability and strength of the fire door. Inside the door frame 1, the first door panel 2 and the second door panel 3 are connected by hinges, which allows the door panels to rotate flexibly. Moreover, the contact surfaces of the first door panel 2 and the second door panel 3 interlock with each other to ensure the sealing when closed.

[0035] Door handles 10 are fixedly connected to the surfaces of the first door panel 2 and the second door panel 3, and the positions of the two door handles 10 are opposite to each other. This design makes it easier for people to operate the fire door from both sides, making it more convenient to open or close.

[0036] To enhance the fire resistance and heat insulation performance of the fire door, a fireproof sealing strip is installed on the inner surface of the door frame 1. When the first door panel 2 and the second door panel 3 are closed, the fireproof sealing strip will fit tightly against the edge of the door panel, effectively preventing the spread of smoke and flames. At the same time, fireproof and heat insulation materials are also filled inside the first door panel 2 and the second door panel 3, further enhancing the overall fire resistance of the fire door and providing more reliable protection for personnel safety.

[0037] A temperature control mechanism is provided on the side of the first traction block 4. This mechanism consists of a guide rail 5, a fixed rod 11, a spring 12, a hot melt plate 13, and a limiting post 14. The hot melt plate 13 is the core component of the temperature control mechanism. It is made of high-strength tin-bismuth alloy. The melting point of this alloy is usually 138°C, which is lower than that of other metal alloys. When a fire occurs, when the ambient temperature reaches the melting point of the hot melt plate 13, it will melt quickly, thereby releasing the limiting function of the limiting post 14, allowing the spring 12 to be released and unfolded. With the fixed rod 11 as the force point, the guide rail 5 moves quickly to the right, and the first traction block 4 is driven by the guide rail 5 to be forceful. Through the threaded rod 7, it drives the first door panel 2 and the second door panel 3 to close in opposite directions, thereby playing the role of pulling and closing the door.

[0038] The second traction block 9 is fixedly connected to the surface of the first door panel 2, and the first traction block 4 is fixedly connected to the surface of the second door panel 3. The first traction block 4 and the second traction block 9 are distributed in parallel, and the second traction block 9 has an L-shaped structure. The L-shaped structure design ensures parallel force during driving, so that the two doors can rotate from opposite directions and open synchronously, effectively preventing wind pressure and ensuring smooth opening and closing of the fire door during normal use.

[0039] In the linkage mechanism, the first drive block 6 is mounted on top of the first traction block 4, and the second drive block 8 is mounted on top of the second traction block 9. The first drive block 6 and the second drive block 8 are respectively threaded to the left and right ends of the threaded rod 7. This threaded connection structure is simple, which is not only easy to install and disassemble, but also more convenient to maintain, thus reducing maintenance costs.

[0040] In the temperature control mechanism, the fixing rod 11 is fixedly connected to the side of the door frame 1. This connection method improves the integration of the equipment. At the same time, the fixing rod 11 is rotatably connected to the limiting column 14, which ensures the consistency of force during the traction process, effectively prevents the door frame 1 from deforming due to force deviation, and extends the service life of the fire door.

[0041] The limiting post 14 is slidably connected to the right side of the guide rail 5. The guide rail 5 has a T-shaped structure. The first traction block 4 is slidably connected to the left side of the guide rail 5, and the spring 12 is fixedly connected to the right side. There are two springs 12, which are symmetrically distributed. Hot melt plates 13 are installed at both the upper and lower ends of the limiting post 14 and the guide rail 5. This structural design allows the spring 12 to stably pull the first traction block 4 and the second traction block 9 through the guide rail 5 after the hot melt plate 13 melts in the event of a fire, thereby driving the first door panel 2 and the second door panel 3 to close quickly and prevent the spread of fire and smoke in time.

[0042] Working principle: When using a temperature-controlled locking structure for fire doors, when the fire door needs to be opened, hold the door handle 10 and pull the first door panel 2. The first traction block 4 and the second traction block 9 are then driven, and the first drive block 6 and the second drive block 8 move along the threaded rod 7. Under the action of the first traction block 4, the first door panel 2 and the second door panel 3 are opened synchronously. When the fire door needs to be closed, push the door handle 10 and repeat the above actions in reverse.

[0043] When a fire occurs, the ambient temperature rises. When the temperature reaches the melting point of the hot melt plate 13, the hot melt plate 13 melts quickly. At this time, the spring 12 releases its elastic force and pulls the guide rail 5. Since the left side of the guide rail 5 is slidably connected to the first traction block 4, with the fixed rod 11 as the force point, the spring 12 unfolds and the guide rail 5 slides to the right under the force. The first traction block 4 moves under the drive of the guide rail 5, and at the same time, it drives the second traction block 9 to move through the threaded rod 7, thereby making the first door panel 2 and the second door panel 3 close synchronously and quickly, so as to achieve the purpose of fire prevention and smoke isolation.

[0044] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0045] 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 temperature control locking structure applied to a fireproof door, comprising a door frame (1); a linkage mechanism is arranged in the door frame (1), the linkage mechanism comprises a first door plate (2), a second door plate (3), a first traction block (4), a first driving block (6), a threaded rod (7), a second driving block (8), a second traction block (9) and a door handle (10), and the first driving block (6), the threaded rod (7) and the second driving block (8) are core components, and synchronous closing and opening is realized under the cooperation of the first traction block (4) and the second traction block (9); characterized in that: The first traction block (4) is provided with a temperature control mechanism on its side. The temperature control mechanism includes a guide rail (5), a fixing rod (11), a spring (12), a hot melt plate (13), and a limiting post (14). The hot melt plate (13), as a core component, will melt quickly after the temperature reaches the melting point, thereby releasing the limiting function and releasing the spring (12), thus playing the role of traction and closing the door.

2. The temperature-controlled interlocking structure for fire doors according to claim 1, characterized in that, The door frame (1) has an I-shaped structure, and the first door panel (2) and the second door panel (3) are hinged inside the door frame (1). The contact surfaces of the first door panel (2) and the second door panel (3) are interlocked. Door handles (10) are fixedly connected to the surfaces of the first door panel (2) and the second door panel (3), and the positions of the door handles (10) are relatively distributed.

3. The temperature-controlled interlocking structure for fire doors according to claim 1, characterized in that, The first door panel (2) is fixedly connected to the second traction block (9), and the second door panel (3) is fixedly connected to the first traction block (4). The first traction block (4) and the second traction block (9) are distributed in parallel, and the second traction block (9) has an L-shaped structure.

4. The temperature-controlled interlocking structure for fire doors according to claim 1, characterized in that, In the linkage mechanism, the first drive block (6) is mounted on top of the first traction block (4), and the second drive block (8) is mounted on top of the second traction block (9). The first traction block (4) and the second traction block (9) are connected by a threaded rod (7).

5. The temperature-controlled interlocking structure for fire doors according to claim 1, characterized in that, In the temperature control mechanism, the fixing rod (11) is fixedly connected to the side of the door frame (1), and the fixing rod (11) is rotatably connected to the limiting post (14).

6. The temperature-controlled interlocking structure for fire doors according to claim 1, characterized in that, The limiting post (14) is slidably connected to the right side of the guide rail (5). The guide rail (5) has a T-shaped structure, and the first traction block (4) is slidably connected to the left side of the guide rail (5). The right side of the guide rail (5) is fixedly connected to a spring (12). There are two springs (12) symmetrically distributed. The limiting post (14) and the guide rail (5) are fitted with hot melt plates (13) at both ends.

7. A temperature-controlled interlocking structure for fire doors according to claim 6, characterized in that, The hot melt plate (13) is made of a high-strength tin-bismuth alloy.

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