Building fireproof door
By installing a positioning assembly consisting of a limit plate and a limit rod in the fire door, the problems of air and smoke leakage are solved, the sealing performance and convenience are improved, and fire safety is ensured.
Patent Information
- Application Number
- CN202520574584.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-03-31
AI Technical Summary
Existing fire doors in buildings are prone to air and smoke leakage after prolonged use, which reduces their sealing performance, affects the spread of fire and smoke, and delays fire rescue time.
A positioning assembly, including a limiting plate, connecting rope, and limiting rod, is installed between the door leaf and the door frame of the fire door. The limiting plate provides secondary sealing of the door gap, and the sealing performance is improved by using fixing blocks and magnets. Meanwhile, the limiting rod is a hydraulic rod to facilitate the automatic rebound of the door leaf.
It improves the sealing performance of fire doors, reduces air and smoke leakage, ensures timely fire rescue, enhances convenience, and prevents the spread of fire and smoke.
Smart Images
Figure CN223964394U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire door technology, specifically a building fire door. Background Technology
[0002] A fire door is a type of door with a certain fire resistance. It is mainly composed of a door frame, door leaf, fire-resistant hinges, fire-resistant locks, and other components. The function of a fire door is to prevent the spread of fire and smoke for a certain period of time, thus buying time for personnel evacuation and fire rescue and ensuring the safety of the building.
[0003] Fire doors can be classified by material into steel fire doors, wooden fire doors, and steel-wood composite fire doors. They can also be classified by fire resistance into different grades such as Class A, Class B, and Class C. Building fire doors are doors installed in buildings that serve as fire-resistant partitions. They have fire resistance, ensure safe evacuation, and are coordinated with the overall building design. Building fire doors are normally closed in daily life.
[0004] Existing fire doors in buildings may leak air and smoke after prolonged use, reducing their sealing performance, increasing the spread of fire and smoke within the building, affecting evacuation and fire rescue time, and consequently reducing the building's safety. Utility Model Content
[0005] Therefore, the purpose of this utility model is to provide a fireproof door for buildings to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a fireproof door for buildings, comprising a door frame body and a door leaf, wherein the door frame body and the door leaf are movably connected, and a positioning component for sealing the door leaf is provided on the top of the door leaf, the positioning component comprising a first roller, a limiting plate and a connecting rope, wherein the outer wall of the first roller is provided with a connecting rope, one end of the connecting rope is connected to the door leaf and the other end of the connecting rope is connected to the limiting plate, a limiting rod is installed on the outer wall of the door leaf, and the other end of the limiting rod is connected to the door frame body, and a fixing block is installed on one end of the door frame body, and the fixing block is in contact with the door leaf.
[0007] By adopting the above technical solution, the positioning component is used to install a limiting plate at one end of the door to provide a secondary seal for the door gap. The setting of the fixing block also effectively improves the sealing between the door leaf and the door frame body, reducing the phenomenon of air and smoke leakage, improving the sealing performance of the fire door, greatly reducing the spread of fire and smoke in the building, and providing time for fire rescue. The setting of the limiting rod also facilitates the opening and closing of the door leaf, so that the door leaf is in contact with the door frame body for a long time. After people pass through the fire door, the door leaf can automatically rebound, improving the convenience of the fire door.
[0008] The present invention is further configured such that the fixing block is a magnet, and the door leaf is made of metal, and the fixing block and the door leaf are attracted to each other.
[0009] By adopting the above technical solution, the setting of the fixing block also effectively improves the sealing between the door leaf and the door frame body, reducing the phenomenon of air leakage and smoke leakage.
[0010] The present invention is further provided with a limit rod at the end of the door leaf away from the connecting rope, and the limit rod is movably connected to both the door leaf and the door frame body.
[0011] By adopting the above technical solution, the limit rod is a hydraulic rod, which allows the fire door to automatically spring back after the user passes through, thus improving the convenience of the fire door.
[0012] The present invention is further configured such that the end of the limiting plate away from the door leaf is arc-shaped, and the bottom of the limiting plate is in contact with the ground.
[0013] By adopting the above technical solution, the tension of the connecting rope is transmitted through the arrangement of the first roller and the second roller.
[0014] The present invention is further configured such that a second roller is provided at one end of the first roller, and a connecting rope is also provided on the outer wall of the second roller, and the second roller is movably connected to the door frame body.
[0015] By adopting the above technical solution, the installation of the connecting rope on the outer wall of the limiting plate effectively improves the stability of the connecting rope pulling the limiting plate.
[0016] The present invention is further configured such that both ends of the connecting rope are provided with protrusions, and both ends of the door frame body are provided with sliding grooves, and the sliding grooves engage with the protrusions.
[0017] By adopting the above technical solution, the stability of the slide rail during movement is improved by setting the slide rail, and the position of the slide rail is also effectively controlled.
[0018] In summary, the present invention has the following main advantages:
[0019] This utility model, through the setting of positioning components, installs a limiting plate at one end of the door to provide secondary sealing of the door gap, and the setting of fixing blocks also effectively improves the sealing between the door leaf and the door frame body, reducing the phenomenon of air and smoke leakage, improving the sealing performance of the fire door, greatly reducing the spread of fire and smoke in the building, and providing time for fire rescue. The setting of limiting rod also facilitates the opening and closing of the door leaf, so that the door leaf is in contact with the door frame body for a long time. After people pass through the fire door, the door leaf can automatically rebound, improving the convenience of the fire door. Attached Figure Description
[0020] Figure 1 This is a front perspective view of the present utility model;
[0021] Figure 2 This is a side perspective view of the present invention;
[0022] Figure 3 This is a schematic diagram of the positioning component structure of this utility model;
[0023] Figure 4 This is a top view of the present invention.
[0024] In the diagram: 1. Door frame body; 2. Door leaf; 3. Limiting rod; 4. Positioning component; 40. First roller; 41. Second roller; 42. Connecting rope; 43. Limiting plate; 44. Slide groove; 45. Fixing block. Detailed Implementation
[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0026] The embodiments of this utility model will be described below based on its overall structure.
[0027] A type of fire door for buildings, such as Figure 1 - Figure 4 As shown, the device includes a door frame body 1 and a door leaf 2. The door frame body 1 and the door leaf 2 are movably connected. A positioning component 4 for sealing the door leaf 2 is provided on the top of the door leaf 2. The positioning component 4 includes a first roller 40, a limiting plate 43, and a connecting rope 42. The connecting rope 42 is provided on the outer wall of the first roller 40. One end of the connecting rope 42 is connected to the door leaf 2, and the other end of the connecting rope 42 is connected to the limiting plate 43. A limiting rod 3 is installed on the outer wall of the door leaf 2, and the other end of the limiting rod 3 is connected to the door frame body 1. A fixing block 45 is installed on one end of the door frame body 1, and the fixing block 45 is connected to the door leaf. The door leaf 2 and the door frame body 1 are fitted together. The positioning component 4 is installed at one end of the door, and the limiting plate 43 provides a secondary seal for the door gap. The fixing block 45 also effectively improves the sealing between the door leaf 2 and the door frame body 1, reducing the occurrence of air and smoke leakage, improving the sealing performance of the fire door, greatly reducing the spread of fire and smoke in the building, and providing time for fire rescue. The limiting rod 3 also facilitates the opening and closing of the door leaf 2, so that the door leaf 2 is in contact with the door frame body 1 for a long time. After people pass through the fire door, the door leaf 2 can automatically rebound, improving the convenience of the fire door.
[0028] Please see Figure 1 - Figure 3 The fixing block 45 is a magnet, and the door leaf 2 is made of metal. The fixing block 45 and the door leaf 2 are attracted to each other. The setting of the fixing block 45 also effectively improves the sealing between the door leaf 2 and the door frame body 1, reducing the phenomenon of air leakage and smoke leakage.
[0029] Please see Figure 1 - Figure 4 A limit rod 3 is provided at the end of the door leaf 2 away from the connecting rope 42, and the limit rod 3 is movably connected to the door leaf 2 and the door frame body 1. The limit rod 3 is a hydraulic rod, so the door leaf 2 can automatically spring back after the user passes through the fire door, which improves the convenience of the fire door.
[0030] Please see Figure 1 - Figure 3 The end of the limiting plate 43 away from the door leaf 2 is arc-shaped, and the bottom of the limiting plate 43 is in contact with the ground. The limiting plate 43 installed at one end of the door provides a secondary seal for the door gap, which improves the sealing performance of the fire door.
[0031] Please see Figure 3 A second roller 41 is provided at one end of the first roller 40, and a connecting rope 42 is also provided on the outer wall of the second roller 41. The second roller 41 is movably connected to the door frame body 1, and the tension of the connecting rope 42 is transmitted through the arrangement of the first roller 40 and the second roller 41.
[0032] Please see Figure 3 Both the first roller 40 and the second roller 41 are engaged with the connecting rope 42, and one end of the connecting rope 42 is located at the center point of the limiting plate 43. The position of the connecting rope 42 on the outer wall of the limiting plate 43 effectively improves the stability of the connecting rope 42 pulling the limiting plate 43.
[0033] Please see Figure 1 , Figure 2 The connecting rope 42 has protrusions at both ends, and the door frame body 1 has sliding grooves 44 at both ends. The sliding grooves 44 engage with the protrusions. The sliding grooves 44 improve the stability of the sliding grooves 44 during movement and effectively control the position of the sliding grooves 44.
[0034] The working principle of this utility model is as follows:
[0035] Fire doors installed inside buildings are first connected to the building wall via the door frame 1. When passage through the fire door is required, the door leaf 2 is pulled by the handle, disengaging it from the fixing block 45 on the outer wall of the door frame 1. Pulling the door leaf 2 moves the connecting rope 42, causing the first roller 40 and the second roller 41 to work simultaneously, moving the limiting plate 43 upwards. When the door leaf 2 is fully opened, the limiting plate 43 moves to the top of the door frame 1, facilitating passage. Then, when the user leaves the fire door, the limiting rod 3 pulls the door leaf 2 closer to one end of the door frame 1, causing the connecting rope 42 to move the limiting plate 43 downwards. When the door leaf 2 is in contact with the fixing block 45, the limiting plate 43 is located at the lower end of the door leaf 2, sealing the bottom of the door leaf 2 and improving the fire door's airtightness.
[0036] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A fireproof door for buildings, comprising a door frame body (1) and a door leaf (2), characterized in that: The door frame body (1) is movably connected to the door leaf (2), and the top of the door leaf (2) is provided with a positioning component (4) for sealing the door leaf (2). The positioning component (4) includes a first roller (40), a limiting plate (43) and a connecting rope (42). The outer wall of the first roller (40) is provided with a connecting rope (42), and one end of the connecting rope (42) is connected to the door leaf (2), and the other end of the connecting rope (42) is connected to the limiting plate (43). The outer wall of the door leaf (2) is equipped with a limiting rod (3), and the other end of the limiting rod (3) is connected to the door frame body (1). One end of the door frame body (1) is equipped with a fixing block (45), and the fixing block (45) is in contact with the door leaf (2).
2. A fireproof door for buildings according to claim 1, characterized in that: The fixing block (45) is a magnet, and the door leaf (2) is made of metal. The fixing block (45) and the door leaf (2) are attracted to each other.
3. A fire door for buildings according to claim 1, characterized in that: The door leaf (2) is provided with a limit rod (3) at the end away from the connecting rope (42), and the limit rod (3) is movably connected to the door leaf (2) and the door frame body (1).
4. A fire door for buildings according to claim 1, characterized in that: The end of the limiting plate (43) away from the door leaf (2) is arc-shaped, and the bottom of the limiting plate (43) is in contact with the ground.
5. A fireproof door for buildings according to claim 1, characterized in that: A second roller (41) is provided at one end of the first roller (40), and a connecting rope (42) is also provided on the outer wall of the second roller (41), and the second roller (41) is movably connected to the door frame body (1).
6. A fire door for buildings according to claim 1, characterized in that: The first roller (40) and the second roller (41) are engaged with the connecting rope (42), and one end of the connecting rope (42) is located at the center point of the limiting plate (43).
7. A fire door for buildings according to claim 1, characterized in that: The connecting rope (42) has protrusions at both ends, and the door frame body (1) has grooves (44) at both ends, and the grooves (44) engage with the protrusions.