Impact-resistant composite protective door for civil air defense engineering
By setting a slot on one side of the inner frame of the air-raid shelter door to secure the sealing strip, and using a knob in the opening and closing slot to operate the fixing buckle, the problem of easy displacement of the slope plate is solved, and convenient disassembly and assembly and improved sealing are achieved.
Patent Information
- Application Number
- CN202520076601.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-14
AI Technical Summary
The existing single-leaf air-raid shelter doors are prone to displacement under frequent use, which leads to inconvenience and reduced sealing performance, requiring frequent inspection and repositioning.
Design an impact-resistant composite civil defense protection door, which uses a groove on one side of the inner frame to secure the sealing strip, and uses a knob in the opening and closing groove to make the buckle pass through the fixed groove and enter the threshold to achieve the limiting and fixing of the slope plate.
It improves the door's sealing performance, prevents slope plate displacement, and is easy to install and disassemble, meeting daily use needs.
Smart Images

Figure CN223794115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of civil defense door technology, specifically to an impact-resistant composite civil defense engineering protective door. Background Technology
[0002] Civil defense doors are the entrances and exits of civil defense projects. Civil defense doors are clearly classified into ordinary single and double-leaf protective airtight doors and airtight doors. They are made of composite materials and their main functions include protection, fire prevention, theft prevention, sound insulation, and impact resistance. The threshold of a civil defense door is usually higher than the ground, and the height difference between the threshold and the ground should not be less than 150mm. This design is mainly to ensure the airtightness and stability of the door and prevent toxic gases, water, etc. from penetrating into the door, thereby protecting the safety of the personnel inside.
[0003] To facilitate use, existing single-leaf air-raid shelter doors typically have external ramps placed on both sides of the threshold. However, this direct external placement method is prone to displacement under frequent use, requiring staff to check and reposition the ramps, which is cumbersome. Therefore, an impact-resistant composite air-raid shelter door is proposed to facilitate the limiting and fixing of the ramps, and it is also easy to assemble and disassemble. Utility Model Content
[0004] To address the problems in the existing technology, this utility model provides an impact-resistant composite civil defense engineering protective door that facilitates the limiting and fixing of the slope plate and is easy to assemble and disassemble.
[0005] The technical solution adopted by this utility model to solve its technical problem is an impact-resistant composite civil defense engineering protective door, including a civil defense door body and an opening and closing groove. The civil defense door body includes a door frame, a door body, a threshold, and an inner frame. A slope plate is provided on one side of the door frame at a position parallel to the threshold.
[0006] A fixing slot is provided on one side surface of the door frame at the center of the slope plate, and a knob is provided on the inner wall of the slope plate through a reserved hole.
[0007] By adopting the above technical solution, the groove on one side of the inner frame is used to secure the sealing strip, which further enhances the sealing effect when the door is closed, and is easy to install and remove.
[0008] The ramp facilitates daily use by personnel, and the knob in the opening and closing slot allows personnel to rotate it so that the buckle passes through the fixing slot and enters the threshold to be fixed against the inner wall, thus avoiding displacement problems that are easy to occur under frequent use.
[0009] Specifically, the door body is located on one side of the door frame, the threshold is located on one side of the inner wall of the door frame, and the inner frame is located on the inner wall of the door frame corresponding to the threshold.
[0010] By adopting the above technical solution, the door body and door frame are used to close the door.
[0011] Specifically, a slot is provided on one side surface of the inner frame corresponding to the door position, and a sealing strip is filled in the slot. The sealing strip is made of rubber.
[0012] By adopting the above technical solution, the sealing strip is made of rubber material and comes into contact with its inner wall surface when the door is closed, so as to further improve the sealing effect when closed.
[0013] Specifically, the top surface of the slope plate has an opening and closing groove corresponding to the fixed slot position.
[0014] By adopting the above technical solution, the opening and closing slot is used to facilitate the storage of the knob.
[0015] Specifically, one end of the knob is connected to a buckle via a rotational damping mechanism at the position of the fixed slot.
[0016] By adopting the above technical solution, the buckle is used to penetrate the fixing slot and enter the inside of the threshold to be fixed against the inner wall.
[0017] The beneficial effects of this utility model are:
[0018] (1) The impact-resistant composite civil defense engineering protective door of this utility model has a groove on one side of the inner frame to facilitate the fixing of the sealing strip, which further increases the sealing effect when the door is closed, and is easy to disassemble and assemble.
[0019] (2) The impact-resistant composite civil defense engineering protective door described in this utility model has a slope plate to facilitate daily use when people pass through, and a knob in the opening and closing groove to facilitate the operation of the person to rotate so that the buckle passes through the fixing groove and enters the threshold to abut against the inner wall for fixation, thereby avoiding the problem of displacement that is very easy to occur under frequent use. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Figure 1 This is a schematic diagram of the overall design of this utility model;
[0022] Figure 2 This is a schematic diagram of the card slot of this utility model;
[0023] Figure 3 This is a schematic diagram of the buckle of this utility model;
[0024] In the diagram: 1. Air raid shelter door body; 2. Door frame; 3. Door body; 4. Threshold; 5. Inner frame; 6. Card slot; 7. Sealing strip; 8. Fixing slot; 9. Sloping plate; 10. Opening and closing slot; 11. Knob; 12. Buckle. Detailed Implementation
[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0026] To improve ease of use, such as Figure 1-3 As shown, the impact-resistant composite civil defense engineering protective door of this utility model includes a civil defense door body 1 and an opening and closing groove 10. The civil defense door body 1 includes a door frame 2, a door body 3, a threshold 4 and an inner frame 5. A slope plate 9 is provided on one side of the door frame 2 at a position parallel to the threshold 4.
[0027] A fixing slot 8 is provided on one side surface of the door frame 2 at the center position of the slope plate 9, and a knob 11 is provided on the inner wall of the opening and closing groove 10 through a reserved hole.
[0028] When in use, the sealing strip 7 is secured by the slot 6 on one side of the inner frame 5, which further enhances the sealing effect when the door 3 is closed, and is easy to install and remove.
[0029] The ramp 9 facilitates daily use by personnel, and the knob 11 in the opening and closing groove 10 allows personnel to rotate it so that the buckle 12 passes through the fixing groove 8 and enters the threshold 4 to abut against the inner wall for fixation, thereby avoiding displacement problems that are easy to occur under frequent use.
[0030] To improve ease of use, for example, such as Figure 1 , Figure 2 , Figure 3 As shown, the present invention also includes the door body 3 disposed on one side of the door frame 2, the threshold 4 disposed on one side of the inner wall of the door frame 2, and the inner frame 5 disposed on the inner wall of the door frame 2 corresponding to the threshold 4.
[0031] When in use, the door body 3 is used in conjunction with the door frame 2 to close the door.
[0032] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes a slot 6 on one side surface of the inner frame 5 corresponding to the position of the door body 3, and a sealing strip 7 filled in the slot 6, the sealing strip 7 being made of rubber material.
[0033] When in use, the sealing strip 7 is made of rubber and comes into contact with its inner wall surface when the door 3 is closed, so as to further improve the sealing effect when closed.
[0034] For example, such as Figure 1 , Figure 3As shown, the present invention also includes an opening and closing groove 10 provided on the top surface of the slope plate 9 corresponding to the position of the fixing slot 8.
[0035] When in use, the knob 11 can be stored in the opening and closing slot 10.
[0036] For example, such as Figure 1 , Figure 3 As shown, this utility model also includes a buckle 12 connected to one end of the knob 11 at the position corresponding to the fixed slot 8 via rotational damping.
[0037] When in use, the buckle 12 passes through the fixing slot 8 and enters the inside of the threshold 4 to be fixed against the inner wall.
[0038] In use, the sealing strip 7 is secured by the groove 6 on one side of the inner frame 5, which further enhances the sealing effect when the door 3 is closed, and is easy to install and remove.
[0039] The ramp 9 facilitates daily use by personnel, and the knob 11 in the opening and closing groove 10 allows personnel to rotate it so that the buckle 12 passes through the fixing groove 8 and enters the threshold 4 to abut against the inner wall for fixation, thereby avoiding displacement problems that are easy to occur under frequent use.
[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An impact-resistant composite civil defense protection door, characterized in that, Including civil air defense door body (1) and open and close groove (10), the civil air defense door body (1) includes door frame (2), door body (3), door sill (4) and inner frame (5), one side of the door frame (2) is provided with slope plate (9) in parallel position with door sill (4); The surface of the door frame (2) is provided with a fixed slot (8) at the center position corresponding to the slope plate (9), and the slope plate (9) is provided with a knob (11) through a reserved hole corresponding to the inner wall of the open and close groove (10).
2. The impact-resistant composite civil defense door of claim 1, wherein, The door body (3) is arranged on one side of the door frame (2), the door sill (4) is arranged on one side of the inner wall of the door frame (2), and the inner frame (5) is arranged on the inner wall of the door frame (2) corresponding to one side of the door sill (4).
3. The impact-resistant composite civil defense door of claim 1, wherein, The surface of the inner frame (5) is provided with a slot (6) at the position corresponding to the door body (3), the slot (6) is filled with a sealing strip (7), and the sealing strip (7) is made of rubber material.
4. The impact-resistant composite civil defense door of claim 1, wherein, The top surface of the slope plate (9) is provided with an open and close groove (10) at the position corresponding to the fixed slot (8).
5. The impact-resistant composite civil defense door of claim 1, wherein, One end of the knob (11) is connected with a buckle (12) through a rotary damping corresponding to the fixed slot (8).