A steel fireproof door

Abstract

This utility model discloses a steel fire door, including a door panel and a door frame. One side of the door panel is movably connected to the door frame via a hinge. The key feature is that an elastic contact electrode is provided on the hinged side of the door panel, and an electrode guide groove is provided on one side of the door frame. A door frame contact point is provided within the electrode guide groove, and a fireproof sealing cover is slidably installed at the opening of the electrode guide groove. A limit slot is provided on one inner wall of the electrode guide groove. An observation window is installed on the door panel, and a smart door lock is installed below the observation window. The smart door lock has a built-in temperature alarm module, and its power supply terminal is electrically connected to the elastic contact electrode. This utility model's overall technical solution, through the integration of mechanical structural innovation and intelligent monitoring technology, enhances the basic protective performance of the fire door while constructing a dual safety guarantee mechanism combining active fire early warning and passive structural protection.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and more specifically, to a steel fire door. Background Technology

[0002] As a key facility in the field of building fire safety, the technological development of steel fire doors has always revolved around improving fire protection performance and reliability. Traditional fire door designs typically use a single-material door panel structure, achieving basic fire protection functions by increasing the thickness of the panel or filling it with ordinary thermal insulation materials. However, in actual fire scenarios, there is often a contradiction between structural strength and thermal insulation performance. At the same time, the functional integration of existing fire doors is low; most products only possess passive flame-retardant properties and lack active monitoring and emergency response capabilities, making it difficult to meet the needs of modern buildings for early fire warning and intelligent management.

[0003] In terms of structural design and functional implementation, existing technologies suffer from multiple limitations: conventional door conductive components mostly employ fixed contact structures, which are prone to poor contact due to mechanical wear after long-term use, and rely on independent battery power systems requiring frequent maintenance and replacement; fire-resistant interface protection devices are typically fixed and enclosed structures, which, while preventing the intrusion of foreign objects in daily life, cannot automatically open in high-temperature environments during fires to ensure emergency power supply; smart door lock modules generally lack environmental sensing capabilities, making it difficult to trigger alarms and link with fire protection systems in a timely manner during a fire; furthermore, observation windows and door lock components are often distributed, resulting in low utilization of door space and a failure to effectively coordinate fire monitoring functions with access control systems. These technological bottlenecks restrict the comprehensive protective effectiveness of traditional fire doors in complex fire scenarios. Summary of the Invention

[0004] The purpose of this utility model is to provide a steel fireproof door to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] In a first aspect, this utility model provides a steel fireproof door, including a door panel and a door frame. The surface of the door panel is made of fire-resistant galvanized steel sheet and filled with fireproof rock wool. One side of the door panel is movably connected to the door frame via a hinge. An elastic contact electrode is provided on the hinged side of the door panel. An electrode guide groove is provided on one side of the door frame, and a door frame contact point is provided within the electrode guide groove. A fireproof sealing cover is slidably provided at the opening of the electrode guide groove. A limit slot is provided on one inner wall of the electrode guide groove. A connecting rod 1 is rotatably connected to the outer side of the fireproof sealing cover. A connecting rod 2 is rotatably connected to one side of the connecting rod 1. When the door panel is closed, the door panel is pressed against the door frame, thereby pressing the connecting rod 2 and the connecting rod 1. This causes the connecting rod 2 and the connecting rod 1 to press the fireproof sealing cover to one side. As a result, when the door panel is closed with the door frame, the elastic contact electrode makes electrical contact with the door frame contact point. This allows the power cable and other components pre-installed in the door frame to charge the battery required by the intelligent device inside the door panel, in conjunction with the door frame contact point and the elastic contact electrode.

[0007] Secondly, this utility model provides a steel fireproof door, wherein an observation window is installed on the door panel, an intelligent door lock is installed on one side below the observation window, and a storage battery is installed inside the door panel, wherein the storage battery is connected in series between the elastic contact electrode and the intelligent door lock.

[0008] The smart door lock has a built-in temperature alarm module with an integrated audible and visual alarm system. It is also remotely connected to the fire protection system via a wireless network. The power supply of the smart door lock is electrically connected to the elastic contact electrode.

[0009] Thirdly, this utility model provides a steel fireproof door, wherein the elastic contact electrode is electrically connected to the door frame contact, the outside of the door frame contact is electrically connected to the power grid, and the power adapter is an AC-DC power module, preferably an ACV-DCV model.

[0010] Fourthly, this utility model provides a steel fireproof door, wherein a limiting block is installed on one side of the fireproof sealing cover, and a compression spring is installed on one side of the limiting block, and the fireproof sealing cover is slidably engaged with the limiting slot through the limiting block.

[0011] Fifthly, this utility model provides a steel fireproof door, wherein the connecting rod and the fireproof sealing cover are embedded, and the top of the connecting rod and the fireproof sealing cover are on the same horizontal plane.

[0012] The steel fireproof door provided by this utility model has the following beneficial effects:

[0013] This steel fire door achieves multiple safety performance enhancements through structural optimization and functional integration. The door panel adopts a composite structure of galvanized steel plate and fireproof rock wool, which significantly enhances fire resistance and heat insulation performance while maintaining structural strength, effectively delaying the spread of fire and reducing the penetration of toxic smoke. Its innovative electrode contact system ensures a stable conductive path when the door is closed through the precise docking design of elastic contact electrodes and door frame contacts, providing a continuous power supply for the smart door lock and avoiding the maintenance problems of traditional battery-powered systems. The fireproof sealing cover plate installed in the electrode guide groove forms a linkage protection mechanism with the linkage mechanism. Under normal conditions, the electrode interface is closed to prevent foreign objects from entering. In the high temperature environment of a fire, the linkage deforms or melts due to heat, triggering the cover plate to open. This ensures both the reliability of daily protection and the automatic activation of the emergency power supply function. The smart door lock integrates a temperature alarm module, which can monitor abnormal ambient temperature in real time. When a fire occurs, it can immediately activate the audible and visual alarm and link with the fire protection system, significantly shortening the emergency response time. The layout design of the observation window and the smart door lock ensures the escape window function while optimizing the utilization of door space through modular integration, so that fire monitoring and access control functions form a collaborative protection system.

[0014] This practical overall technical solution integrates mechanical structure innovation with intelligent monitoring technology to build a dual safety guarantee mechanism that combines active fire early warning with passive structural protection, while improving the basic protective performance of fire doors. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0016] Figure 1 This is a three-dimensional structural diagram of a steel fire door provided in an embodiment of this utility model.

[0017] Figure 2 This is a structural schematic diagram of the middle door panel of a steel fireproof door provided in an embodiment of this utility model.

[0018] Figure 3 This is a structural schematic diagram of the door frame of a steel fire door provided in an embodiment of this utility model.

[0019] Figure 4 This utility model provides a steel fire door. Figure 3 Enlarged view of the structure at point A.

[0020] Figure 5This is a partially enlarged view of the electrode guide groove in a steel fire door provided by an embodiment of this utility model.

[0021] In the diagram: 1. Door frame; 2. Door panel; 3. Observation window; 4. Smart door lock; 5. Hinge; 6. Elastic contact electrode; 7. Electrode guide groove; 8. Door frame contact point; 9. Fireproof sealing cover plate; 10. Limiting block; 11. Limiting slot; 12. Compression spring; 13. Link 1; 14. Link 2. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 5 This utility model provides a steel fire door.

[0024] As a type of steel fireproof door, it includes a door panel 2 and a door frame 1. The surface of the door panel 2 is made of fire-resistant galvanized steel sheet, and the interior is filled with fireproof rock wool. One side of the door panel 2 is movably connected to the door frame 1 via a hinge 5. An elastic contact electrode 6 is provided on the side of the door panel 2 with the hinge 5. An electrode guide groove 7 is provided on one side of the door frame 1. A door frame contact point 8 is provided in the electrode guide groove 7. A fireproof sealing cover 9 is slidably installed at the opening of the electrode guide groove 7. A limit slot 11 is provided on one inner wall of the electrode guide groove 7. The fireproof sealing cover 9 is rotatably connected to the outer wall. Link 13 is rotatably connected to link 2 14 on one side of link 13. Link 13 and fireproof sealing cover 9 are embedded in each other. The top of link 13 and fireproof sealing cover 9 are at the same level. Limit block 10 is installed on one side of fireproof sealing cover 9. Compression spring 12 is installed on one side of limit block 10. Fireproof sealing cover 9 is slidably engaged with limit slot 11 through limit block 10. The fireproof sealing cover 9 can prevent accidental contact with door frame contact point 8 when opening the door. Fireproof sealing cover 9 is made of fireproof material and can also provide fire protection for door frame contact point 8.

[0025] An observation window 3 is installed on the door panel 2. The observation window 3 is fitted with fireproof and heat-insulating double-layer glass. A smart door lock 4 is installed on one side below the observation window 3. A battery is installed inside the door panel 2. The battery is connected in series between the elastic contact electrode 6 and the smart door lock 4. When the door panel 2 is closed, the door panel 2 is pressed against the door frame 1, thereby pressing the connecting rod 14 and the connecting rod 13. The connecting rod 14 and the connecting rod 13 work together to press the fireproof sealing cover 9 to one side. Thus, when the door panel 2 is closed with the door frame 1, the elastic contact electrode 6 makes electrical contact with the door frame contact 8. The battery required by the smart device inside the door panel 2 is charged through the power cable and other components pre-installed in the door frame 2, in conjunction with the door frame contact 8 and the elastic contact electrode 6. The elastic contact electrode 6 is in electrical contact with the door frame contact 8. The outside of the door frame contact 8 is electrically connected to the power grid. The power adapter is an AC-DC power module, preferably AC220V-DC6V.

[0026] The smart door lock 4 has a built-in temperature alarm module with a built-in sound and light alarm system, and it is remotely connected to the fire protection system via a wireless network. The power supply end of the smart door lock 4 is electrically connected to the elastic contact electrode 6.

[0027] In summary, the present invention provides a steel fire door, the door panel 2 is made of fire-resistant galvanized steel plate, and an observation window 3 and a smart door lock 4 are installed on the door panel 2. Both the observation window 3 and the smart door lock 4 require a power connection to be used. Traditional wired power supply is prone to wire wear or even breakage under frequent opening and closing of the door, while battery-powered power supply requires regular battery replacement.

[0028] Therefore, an elastic contact electrode 6 is provided on the side of the door panel 2 that contacts the door frame 1 via the hinge 5, and the elastic contact electrode 6 is connected to a battery element provided inside the door panel 2 for charging the battery inside the door panel 2. An electrode guide groove 7 is provided at the corresponding position of the door frame 1, and a door frame contact 8 is provided in the electrode guide groove 7. A fireproof sealing cover 9 is installed at the opening outside the electrode guide groove 7, and the fireproof sealing cover 9 is slidably engaged with the limiting slot 11 by the limiting block 10.

[0029] When door panel 2 is closed, it presses against door frame 1, thereby pressing against connecting rod 14 and connecting rod 13. This causes connecting rod 14 and connecting rod 13 to press the fireproof sealing cover 9 to one side. As a result, when door panel 2 is closed with door frame 1, the elastic contact electrode 6 makes electrical contact with door frame contact 8. This allows the power cables and other components pre-installed in door frame 2 to charge the battery required by the smart device inside door panel 2, in conjunction with door frame contact 8 and elastic contact electrode 6. The fireproof sealing cover 9 also prevents accidents caused by accidental contact with door frame contact 8 when the door is opened.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A steel fireproof door, comprising a door panel (2) and a door frame (1), wherein the surface of the door panel (2) is made of galvanized steel sheet and the interior is filled with fireproof rock wool, and one side of the door panel (2) is movably connected to the door frame (1) via a hinge (5), characterized in that, The door panel (2) is provided with an elastic contact electrode (6) on one side with a hinge (5). The door frame (1) is provided with an electrode guide groove (7) on one side. The electrode guide groove (7) is provided with a door frame contact point (8). A fireproof sealing cover plate (9) is slidably provided at the opening of the electrode guide groove (7). A limit slot (11) is provided on one inner wall of the electrode guide groove (7). The fireproof sealing cover plate (9) is rotatably connected to the outer side of the fireproof sealing cover plate (9) with a connecting rod one (13). The connecting rod one (13) is rotatably connected to a connecting rod two (14) on one side. An observation window (3) is installed on the door panel (2), and a smart door lock (4) is installed on one side below the observation window (3). The smart door lock (4) has a built-in temperature alarm module. The temperature alarm module has a built-in sound and light alarm system and is remotely connected to the fire protection system via a wireless network. The power supply end of the smart door lock (4) is electrically connected to the elastic contact electrode (6).

2. A steel fireproof door according to claim 1, characterized in that, A battery is installed inside the door panel (2), and the battery is connected in series between the elastic contact electrode (6) and the smart door lock (4).

3. A steel fireproof door according to claim 1, characterized in that, The elastic contact electrode (6) is in electrical contact with the door frame contact (8), and the outside of the door frame contact (8) is electrically connected to the power grid.

4. A steel fireproof door according to claim 1, characterized in that, A limiting block (10) is installed on one side of the fireproof sealing cover (9), and a pressure spring (12) is installed on one side of the limiting block (10). The fireproof sealing cover (9) is slidably engaged with the limiting slot (11) through the limiting block (10).

5. A steel fireproof door according to claim 1, characterized in that, The connecting rod (13) and the fireproof sealing cover (9) are embedded, and the top of the connecting rod (13) and the fireproof sealing cover (9) are on the same horizontal plane.

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