Double-layer composite wood fireproof door structure

Abstract

The utility model discloses a double-layer composite wooden fireproof door structure, which belongs to the technical field of fireproof doors and comprises a fireproof door body and a door frame. The door further comprises a blocking assembly, the blocking assembly comprises a movable baffle, the movable baffle is slidably installed in a movable groove formed in the bottom plate, two sets of movable rods are fixedly installed in the movable groove, the surfaces of the movable rods are slidably sleeved with baffle springs, and the bottom plate is fixedly connected with the door frame. The device further comprises an unlocking assembly. According to the fireproof door, by arranging the blocking assembly, the structure is simple, convenience and practicability are achieved, a gap between the fireproof door body and the floor can be blocked when the fireproof door body is closed, the dense smoke blocking effect is greatly improved, precious time is gained for trapped people to escape, and by arranging the unlocking assembly, the fireproof door body can be opened and closed along with opening and closing of the fireproof door body; and the movable baffle is driven and pushed to stretch out and draw back, so that the influence on daily passing is avoided while the blocking effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, specifically a double-layer composite wooden fire door structure. Background Technology

[0002] Fire doors are special doors used primarily in buildings to separate fire zones and prevent the spread of fire. Double-layer composite wood fire doors are a type of door that excels in fire resistance. They use wood as the main frame material, possessing the texture and aesthetics of natural wood. Their special double-layer composite structure enhances fire resistance. The double-layer structure typically consists of two layers of different materials. The outer layer is usually made of high-quality fire-treated wood, possessing strength and decorative appeal, and capable of resisting a certain degree of flame and heat attack. The inner layer is filled with highly efficient fire-resistant and heat-insulating materials, such as rock wool and glass wool. These materials have excellent heat insulation properties, effectively preventing heat transfer and slowing the spread of fire, allowing the door to maintain its integrity and insulation for a specified time, meeting the corresponding fire resistance requirements. Installing fire doors in fire compartments, evacuation routes, stairwells, and other locations in buildings can effectively delay the spread of fire, buying valuable time for evacuation and fire rescue, and is a crucial facility for ensuring building fire safety.

[0003] A search revealed that Chinese Patent Publication No. CN212958337U discloses a wooden fire door, including a door frame and a door leaf. The surface of the door leaf is covered with a fire-retardant coating. The door leaf has a through-hole observation opening. A first fire-resistant glass is embedded in the opening of the observation opening on one side of the door leaf, and a first baffle for closing the corresponding observation opening is rotatably connected to the other side. The door leaf has an operating port for inserting a fire hose. A second baffle for closing the operating port is rotatably connected to the side of the door leaf where the first baffle is located. The door leaf is provided with two locking elements for locking the first baffle and the second baffle, respectively.

[0004] However, this device also has the following drawbacks:

[0005] In fire accidents, the large amount of dense smoke produced by combustion carries high concentrations of carbon monoxide. If people are trapped inside, they are at high risk of poisoning and suffocation. Existing fire doors, for the sake of ease of opening and closing, have a certain gap between the bottom and the ground. While this design ensures flexibility in daily use, it creates a hidden danger when a fire breaks out. High-temperature smoke can seep into the room quickly through the gap due to thermal pressure and the chimney effect, which not only accelerates the spread of the fire but also seriously threatens the life and health of trapped people, greatly reducing the fire door's barrier and protective effectiveness. This device does not solve this problem. Utility Model Content

[0006] The purpose of this utility model is to provide a double-layer composite wooden fire door structure. By setting a sealing component, the gap between the fire door body and the floor can be sealed when the fire door body is closed, which greatly improves the smoke blocking effect and buys valuable time for trapped personnel to escape, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A double-layer composite wooden fire door structure includes a fire door body and a door frame;

[0009] It also includes a sealing assembly, which includes a movable baffle that is slidably installed in a movable groove in the base plate. Two sets of movable rods are fixedly installed inside the movable groove. A baffle spring is slidably sleeved on the surface of the movable rod. The base plate is fixedly connected to the door frame.

[0010] It also includes an unlocking component, which includes a ramp block. One side of the bottom of the ramp block is set as a ramp. The bottom of the ramp block abuts against the ramp grooves opened on both sides of the movable baffle. One side of the ramp block abuts against one side of the fire door body. Two sets of telescopic rods are fixedly installed on the other side of the ramp block. A limit block is fixedly installed at one end of the telescopic rod. A compression spring is slidably sleeved on the surface of the telescopic rod.

[0011] Preferably, a limiting plate is fixedly installed on the top of the movable rod, and the movable rod and the limiting plate are slidably installed on the bottom of the movable baffle, which has a connecting groove.

[0012] Preferably, one end of the baffle spring abuts against the inner wall of the movable groove, and the other end of the baffle spring abuts against the bottom of the movable baffle.

[0013] Preferably, the bottom two sides of the door frame are provided with telescopic grooves, and the telescopic rod and the limiting block are slidably engaged with the telescopic grooves.

[0014] Preferably, the outer side of the telescopic groove is provided with a notch, the notch is opened on both sides of the bottom of the door frame, and the inclined block slides in conjunction with the notch.

[0015] Preferably, one end of the compression spring abuts against the inclined block, and the other end of the compression spring abuts against the notch.

[0016] Preferably, one side of the fire door body is rotatably connected to the door frame via multiple sets of hinges, and a door closer is provided on the top of the fire door body. One end of the door closer is fixedly connected to the fire door body, and the other end of the door closer is fixedly connected to the door frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model features a simple and convenient sealing component that seals the gap between the fire door and the floor when the fire door is closed, significantly improving the smoke barrier effect and buying valuable time for trapped personnel to escape. Furthermore, the unlocking component allows the movable baffle to extend and retract as the fire door opens and closes, thus enhancing the barrier effect while avoiding disruption to daily passage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 A schematic diagram of the fire door's main body in the open state;

[0021] Figure 3 This is a schematic diagram of the component structure for unlocking;

[0022] Figure 4 This is a schematic diagram of the sealing component structure.

[0023] In the diagram: 1. Fire door body; 2. Door frame; 3. Movable baffle; 4. Base plate; 5. Movable groove; 6. Movable rod; 7. Baffle spring; 8. Inclined block; 9. Inclined groove; 10. Telescopic rod; 11. Limiting block; 12. Compression spring; 13. Limiting plate; 14. Connecting groove; 15. Telescopic groove; 16. Notch groove; 17. Hinge; 18. Door closer. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-4 This utility model provides a technical solution:

[0026] A double-layer composite wooden fire door structure includes a fire door body 1 and a door frame 2. One side of the fire door body 1 is rotatably connected to the door frame 2 through multiple sets of hinges 17. A door closer 18 is provided on the top of the fire door body 1. One end of the door closer 18 is fixedly connected to the fire door body 1, and the other end of the door closer 18 is fixedly connected to the door frame 2.

[0027] The fire door body 1 is rotatably connected to the door frame 2 via multiple sets of hinges 17, ensuring that the fire door body 1 can be opened and closed flexibly for convenient daily use. The double-layer composite wood structure itself has good fire resistance. The wood has undergone special treatment and composite process, which can prevent the spread of fire for a certain period of time, buying valuable time for personnel evacuation and fire rescue. A door closer 18 is installed at the top of the fire door body 1. When the fire door body 1 is opened by external force, the door closer 18 can automatically close the fire door body 1 after the external force is removed, ensuring that the fire door body 1 is always closed in the event of a fire, effectively blocking the spread of smoke and flames, and giving full play to its fire-resistant separation function.

[0028] It also includes a sealing component, which includes a movable baffle 3. The movable baffle 3 is slidably installed in a movable groove 5 opened in the base plate 4. Two sets of movable rods 6 are fixedly installed inside the movable groove 5. A baffle spring 7 is slidably sleeved on the surface of the movable rod 6. The base plate 4 is fixedly connected to the door frame 2. A limit plate 13 is fixedly installed on the top of the movable rod 6. The movable rod 6 and the limit plate 13 are slidably installed in a connecting groove 14 opened at the bottom of the movable baffle 3. One end of the baffle spring 7 abuts against the inner wall of the movable groove 5, and the other end of the baffle spring 7 abuts against the bottom of the movable baffle 3.

[0029] By using the movable groove 5 in conjunction with the movable baffle 3, the movable baffle 3 can extend upward under the push of the baffle spring 7 to seal the gap between the fire door body 1 and the floor. This effectively prevents dense smoke containing toxic gases such as carbon monoxide from entering the room through the gap, greatly reducing the risk of poisoning and providing a relatively safe environment for people inside. The two sets of movable rods 6 fixed in the movable groove 5 provide stable guidance for the sliding of the movable baffle 3, preventing it from deviating or shaking during the sliding process. The limiting plate 13 at the top of the movable rod 6 can prevent the movable baffle 3 from falling out of the movable groove 5, ensuring the reliability and durability of the sealing component.

[0030] It also includes an unlocking component, which includes a ramp block 8. One side of the bottom of the ramp block 8 is set as a ramp. The bottom of the ramp block 8 abuts against the ramp grooves 9 opened on both sides of the movable baffle 3. One side of the ramp block 8 abuts against one side of the fire door body 1. Two sets of telescopic rods 10 are fixedly installed on the other side of the ramp block 8. A limiting block 11 is fixedly installed at one end of the telescopic rod 10. A compression spring 12 is slidably sleeved on the surface of the telescopic rod 10. Telescopic grooves 15 are opened on both sides of the bottom of the door frame 2. The telescopic rods 10 and the limiting block 11 slide with the telescopic grooves 15. A notch 16 is provided on the outside of the telescopic groove 15. The notch 16 is opened on both sides of the bottom of the door frame 2. The ramp block 8 slides with the notch 16. One end of the compression spring 12 abuts against the ramp block 8, and the other end of the compression spring 12 abuts against the notch 16.

[0031] By setting the inclined block 8, when the fire door body 1 is closed, the fire door body 1 squeezes the inclined block 8, causing the inclined block 8 to retract into the notch groove 16. After the movable baffle 3 loses the obstruction of the inclined block 8, it pops upward, thereby sealing the gap. When the fire door body 1 is opened, the compression spring 12 pushes the inclined block 8 out of the notch groove 16. The inclined surface at the bottom of the inclined block 8 cooperates with the inclined grooves 9 on both sides of the movable baffle 3, causing the movable baffle 3 to move downward, compress the baffle spring 7, and be stored in the movable groove 5, thereby avoiding affecting daily passage.

[0032] 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 double-layer composite wooden fire door structure, characterized in that: Includes the fire door body (1) and the door frame (2); It also includes a sealing component, which includes a movable baffle (3), the movable baffle (3) being slidably installed in a movable groove (5) opened in the bottom plate (4), two sets of movable rods (6) being fixedly installed inside the movable groove (5), and a baffle spring (7) being slidably sleeved on the surface of the movable rod (6), and the bottom plate (4) being fixedly connected to the door frame (2). It also includes an unlocking component, which includes a ramp block (8). One side of the bottom of the ramp block (8) is set as a ramp. The bottom of the ramp block (8) abuts against the ramp grooves (9) opened on both sides of the movable baffle (3). One side of the ramp block (8) abuts against one side of the fire door body (1). Two sets of telescopic rods (10) are fixedly installed on the other side of the ramp block (8). One end of the telescopic rod (10) is fixedly installed with a limiting block (11). A compression spring (12) is slidably sleeved on the surface of the telescopic rod (10).

2. The double-layer composite wooden fire door structure according to claim 1, characterized in that: A limiting plate (13) is fixedly installed on the top of the movable rod (6), and the movable rod (6) and the limiting plate (13) are slidably installed on the bottom of the movable baffle (3) with a connecting groove (14).

3. The double-layer composite wooden fire door structure according to claim 1, characterized in that: One end of the baffle spring (7) abuts against the inner wall of the movable groove (5), and the other end of the baffle spring (7) abuts against the bottom of the movable baffle (3).

4. The double-layer composite wooden fire door structure according to claim 1, characterized in that: The bottom sides of the door frame (2) are provided with telescopic grooves (15), and the telescopic rod (10) and the limiting block (11) slide in cooperation with the telescopic grooves (15).

5. The double-layer composite wooden fire door structure according to claim 4, characterized in that: The telescopic groove (15) is provided with a notch (16) on the outside. The notch (16) is opened on both sides of the bottom of the door frame (2). The inclined block (8) slides in conjunction with the notch (16).

6. The double-layer composite wooden fire door structure according to claim 1, characterized in that: One end of the compression spring (12) abuts against the inclined block (8), and the other end of the compression spring (12) abuts against the notch (16).

7. The double-layer composite wooden fire door structure according to claim 1, characterized in that: One side of the fire door body (1) is rotatably connected to the door frame (2) by multiple sets of hinges (17). A door closer (18) is provided on the top of the fire door body (1). One end of the door closer (18) is fixedly connected to the fire door body (1), and the other end of the door closer (18) is fixedly connected to the door frame (2).

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