Impact-resistant civil defense door
By using symmetrically distributed door shells and buffer components, and utilizing springs and sliders to absorb impact energy, combined with the flexible connection of telescopic rods, the problems of impact resistance and connectivity of air defense doors are solved, achieving stable opening and closing and safe connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIXING RENFANG EQUIP PLANT
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-24
AI Technical Summary
Existing air defense doors are unable to effectively resist and buffer impact forces, and their poor connectivity may lead to displacement and abnormal opening and closing.
The door shell and buffer components are symmetrically distributed, including components such as fixed plates, support rods, sliders, springs and connecting rods. The impact energy is absorbed by the deformation and sliding of the springs, and the flexible connection of the telescopic rod and the limiting plate restricts the direction of movement of the door shell.
It effectively buffers the impact force and ensures a stable connection between the door shell and the door, preventing displacement and ensuring the normal opening and closing and safety of the air-raid shelter door.
Smart Images
Figure CN224549968U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of civil defense door technology, specifically to an impact-resistant civil defense door. Background Technology
[0002] Safety has always been a major concern in construction and social development. Civil defense doors, also known as air defense doors, are a special type of door used at the entrances and exits of civil air defense projects. They are crucial protective equipment at these entrances, capable of withstanding shock waves and toxic agents to ensure the safety of personnel and materials within the project. They possess waterproof, explosion-proof, and air pollution-resistant properties and are mainly used in underground shopping malls, hospitals, warehouses, underground parking lots, subways, and other similar locations.
[0003] However, existing technologies still have many defects in some similar structures when used in practice. For example, if the air defense door cannot withstand and buffer the impact force, it will cause a series of serious consequences and lose its protective barrier function. At the same time, the poor connection of the air defense door will threaten the safety of the people inside, and the door may be displaced due to loose connection, or even the air defense door may not be able to open and close normally.
[0004] To address the aforementioned problems, the inventor proposed an impact-resistant air-raid shelter door. Utility Model Content
[0005] In order to solve the problems of being unable to withstand and buffer impacts and the poor connectivity of air defense doors, the purpose of this utility model is to provide an impact-resistant air defense door.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an impact-resistant air-raid shelter door, comprising symmetrically distributed door shells, a connecting assembly between the door shells, and a buffer assembly symmetrically and fixedly connected between the door shells. The buffer assembly includes symmetrically distributed fixed plates, one side of each fixed plate being fixedly connected to one of the door shells. A support rod is fixedly connected between the fixed plates, and two sliders are movably sleeved on the outer surface of the support rod. A first spring is sleeved on the outer surface of the support rod, and a connecting frame is fixedly connected to the outer surface of each slider and one inner wall of the door shell. A connecting rod is rotatably connected between the connecting frames, and a second spring is fixedly connected to the outer surface of the connecting rod. The end of the second spring is fixedly connected to the inner wall of one side of the other door shell.
[0007] As a preferred technical solution of this application, the connecting component includes a telescopic sleeve, a telescopic rod is movably sleeved inside the telescopic sleeve, and a connecting plate is fixedly connected to the ends of both the telescopic sleeve and the telescopic rod. A sliding plate is fixedly connected to one side of one of the door shells, and a sliding groove for use with the sliding plate is opened on one side of the other door shell.
[0008] Through the above technical solution, the telescopic rod slides in the through groove inside the telescopic sleeve. The third spring between the limiting plate fixedly connected to the end of the telescopic rod and the inner wall of the through groove deforms, and works with the connecting plate at the end of the telescopic sleeve and the telescopic rod to achieve a flexible connection when the door shell moves relative to each other. The sliding plate on one side of one door shell slides in the sliding groove on the other side of the door shell, which restricts the direction of movement of the door shell to avoid deviation, and can effectively ensure the connectivity of the blast door.
[0009] As a preferred technical solution of this application, a handle is fixedly connected to one side of one of the door shells.
[0010] Using the above technical solution, the handle can be used to open the air-raid shelter door.
[0011] As a preferred technical solution of this application, the two ends of the first spring are fixedly connected to the fixed plate and the slider, respectively.
[0012] With the above technical solution, the slider slides along the support rod, and the first spring sleeved on the outer surface of the support rod deforms.
[0013] As a preferred technical solution of this application, a limiting plate is fixedly connected to the end of the telescopic rod.
[0014] The above technical solution restricts the direction of movement of the door shell to prevent it from deviating.
[0015] As a preferred technical solution of this application, the telescopic sleeve is provided with a through groove for use with the telescopic rod, and a third spring is fixedly connected between the limiting plate and one inner wall of the through groove.
[0016] Through the above technical solution, the third spring between the limiting plate fixedly connected to the end of the telescopic rod and the inner wall of the through groove deforms.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] When a fire-resistant door is impacted, the buffer components between the door shells function first. The impact force causes the door shells to move relative to each other. The second spring, which is fixedly connected to the outer surface of the connecting rod, is stretched and compressed, absorbing part of the impact energy. The slider, which is fixedly connected to the door shell, slides along the support rod, and the first spring, which is sleeved on the outer surface of the support rod, deforms, thus realizing the impact resistance function of the fire-resistant door. This achieves the purpose of effectively resisting and buffering the impact force.
[0019] This utility model allows the telescopic rod to slide in the through groove inside the telescopic sleeve. The third spring between the limiting plate fixedly connected to the end of the telescopic rod and the inner wall of the through groove deforms, and works in conjunction with the connecting plate at the end of the telescopic sleeve and the telescopic rod to achieve a flexible connection when the door shells move relative to each other. The sliding plate on one side of one door shell slides in the sliding groove on the other side of the door shell, limiting the direction of movement of the door shells to avoid deviation, thereby achieving the purpose of effectively ensuring the connectivity of the blast door. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.
[0021] Figure 1 This is a schematic diagram of the structure of this utility model.
[0022] Figure 2 This is an exploded view of the structure of this utility model.
[0023] Figure 3 This is a schematic diagram of the buffer component of this utility model.
[0024] Figure 4 This is a schematic diagram of the connection component of this utility model.
[0025] Figure 5 This is a schematic diagram of the connection component of this utility model.
[0026] In the diagram: 1. Door shell; 2. Handle; 3. Connecting assembly; 4. Buffer assembly; 31. Telescopic sleeve; 32. Telescopic rod; 33. Connecting plate; 34. Limiting plate; 35. Through groove; 36. Third spring; 37. Slide plate; 38. Slide groove; 41. Fixing plate; 42. Support rod; 43. Slider; 44. First spring; 45. Connecting frame; 46. Connecting rod; 47. Second spring. Detailed Implementation
[0027] 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.
[0028] Example: Figure 1-5As shown, this utility model provides an impact-resistant air defense door, including symmetrically distributed door shells 1, one side of which is fixedly connected to a handle 2, a connecting component 3 is provided between the door shells 1, and a buffer component 4 is symmetrically fixedly connected between the door shells 1.
[0029] The buffer assembly 4 includes symmetrically distributed fixed plates 41. One side of the fixed plate 41 is fixedly connected to one of the door shells 1. A support rod 42 is fixedly connected between the fixed plates 41. Two sliders 43 are movably sleeved on the outer surface of the support rod 42. A first spring 44 is sleeved on the outer surface of the support rod 42. The two ends of the first spring 44 are fixedly connected to the fixed plate 41 and the slider 43 respectively. A connecting frame 45 is fixedly connected to the outer surface of the slider 43 and one side of the inner wall of the door shell 1. The buffer assembly 4 between the door shells 1 first functions. The impact force causes the door shells 1 to move relative to each other, which drives the connecting frame 45 fixedly connected to the inner wall of the door shell 1 to move. A connecting rod 46 is rotatably connected between the connecting frames 45. A second spring 47 is fixedly connected to the outer surface of the connecting rod 46. The end of the second spring 47 is fixedly connected to one side of the inner wall of the other door shell 1.
[0030] The second spring 47 is stretched and compressed to absorb part of the impact energy. The slider 43, which is fixedly connected to the door shell 1, slides along the support rod 42. The first spring 44, which is sleeved on the outer surface of the support rod 42, deforms, thereby realizing the impact resistance function of the blast door.
[0031] The connecting component 3 includes a telescopic sleeve 31, in which a telescopic rod 32 is movably sleeved. Both the ends of the telescopic sleeve 31 and the telescopic rod 32 are fixedly connected to a connecting plate 33. The end of the telescopic rod 32 is fixedly connected to a limiting plate 34. The telescopic sleeve 31 has a through groove 35 that works with the telescopic rod 32. A third spring 36 is fixedly connected between the limiting plate 34 and one inner wall of the through groove 35. The third spring 36 between the limiting plate 34 and the inner wall of the through groove 35 deforms, working in conjunction with the connecting plate 33 at the ends of the telescopic sleeve 31 and the telescopic rod 32 to achieve a flexible connection when the door shells 1 move relative to each other. One side of one door shell 1 is fixedly connected to a sliding plate 37, and the other side of the door shell 1 has a sliding groove 38 that works with the sliding plate 37.
[0032] The slide plate 37 on one side of one door shell 1 slides within the slide groove 38 on the other side of the door shell 1, restricting the movement direction of the door shell 1 to prevent it from deviating.
[0033] The working principle of the impact-resistant air defense door in this application embodiment is as follows: When the impact-resistant air defense door is impacted, the buffer component 4 between the door shells 1 first plays its role. The impact force causes the door shells 1 to move relative to each other, which drives the connecting frame 45 fixedly connected to the inner wall of the door shell 1 to move. The connecting rod 46 rotatably connected between the connecting frames 45 rotates accordingly. The second spring 47 fixedly connected to the outer surface of the connecting rod 46 is stretched and compressed, absorbing part of the impact energy. The slider 43 fixedly connected to the door shell 1 slides along the support rod 42. The first spring 44 sleeved on the outer surface of the support rod 42 deforms, realizing the impact resistance function of the air defense door, thereby achieving the purpose of effectively resisting and buffering the impact force.
[0034] The telescopic rod 32 slides in the through groove 35 inside the telescopic sleeve 31. The third spring 36 between the limiting plate 34 fixedly connected to the end of the telescopic rod 32 and the inner wall of the through groove 35 deforms, and cooperates with the connecting plate 33 at the end of the telescopic sleeve 31 and the telescopic rod 32 to achieve a flexible connection when the door shell 1 moves relative to each other. The sliding plate 37 on one side of the door shell 1 slides in the sliding groove 38 on the other side of the door shell 1, which restricts the movement direction of the door shell 1 to avoid deviation, thereby achieving the purpose of effectively ensuring the connectivity of the blast door.
[0035] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. An impact-resistant air-raid shelter door, comprising a symmetrically distributed door shell (1), characterized in that: A connecting component (3) is provided between the door shells (1), and a buffer component (4) is symmetrically fixedly connected between the door shells (1). The buffer assembly (4) includes symmetrically distributed fixing plates (41). One side of the fixing plate (41) is fixedly connected to one of the door shells (1). A support rod (42) is fixedly connected between the fixing plates (41). Two sliders (43) are movably sleeved on the outer surface of the support rod (42). A first spring (44) is sleeved on the outer surface of the support rod (42). A connecting frame (45) is fixedly connected to the outer surface of the slider (43) and one side inner wall of the door shell (1). A connecting rod (46) is rotatably connected between the connecting frames (45). A second spring (47) is fixedly connected to the outer surface of the connecting rod (46). The end of the second spring (47) is fixedly connected to one side inner wall of the other door shell (1).
2. The impact-resistant air-raid shelter door as described in claim 1, characterized in that: The connecting component (3) includes a telescopic sleeve (31), a telescopic rod (32) is movably sleeved inside the telescopic sleeve (31), and a connecting plate (33) is fixedly connected to the ends of both the telescopic sleeve (31) and the telescopic rod (32). A sliding plate (37) is fixedly connected to one side of one of the door shells (1), and a sliding groove (38) for use with the sliding plate (37) is opened on one side of the other door shell (1).
3. The impact-resistant air-raid shelter door as described in claim 1, characterized in that: One of the door shells (1) has a handle (2) fixedly connected to one side.
4. The impact-resistant air-raid shelter door as described in claim 1, characterized in that: The two ends of the first spring (44) are fixedly connected to the fixed plate (41) and the slider (43) respectively.
5. The impact-resistant air-raid shelter door as described in claim 2, characterized in that: The end of the telescopic rod (32) is fixedly connected to a limiting plate (34).
6. The impact-resistant air-raid shelter door as described in claim 5, characterized in that: The telescopic sleeve (31) has a through groove (35) for use with the telescopic rod (32), and a third spring (36) is fixedly connected between the limiting plate (34) and the inner wall of one side of the through groove (35).