Hinge structure of civil air defense door

Abstract

The utility model relates to the technical field of building protection equipment, and discloses a civil air defense door hinge structure which comprises a wall body, an embedded part is arranged in the wall body, the outer wall of the embedded part is fixedly connected with a first fixing block, the top face of the first fixing block is fixedly connected with a main shaft, the outer wall of the main shaft is rotationally connected with a fixing ring, and the outer wall of the main shaft is fixedly connected with a second fixing block. The outer wall of the fixing ring is fixedly connected with a man protection door, the upper end of the main shaft is fixedly connected with a connecting rod, the other end of the connecting rod is rotationally connected with a supporting arm, the other end of the supporting arm is rotationally connected with a movable joint, and the outer wall of the movable joint is fixedly connected with the outer wall of the wall body. According to the civil air defense door, when the civil air defense door is closed, the stability of the civil air defense door is guaranteed through the supporting arms and the movable joints, common materials and a simple structure are adopted, the production and maintenance cost is reduced, dust and impurities are effectively prevented from entering the civil air defense door through the dustproof cover, the service life of the hinge is prolonged, and the maintenance frequency is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building protection equipment, in particular to a hinge structure for a civil air defense door. Background Art

[0002] With the acceleration of urbanization, the construction of civil air defense projects has received increasing attention. As one of the important protective facilities, the performance of civil air defense doors directly affects the safety of personnel. Existing civil air defense door hinges mostly use traditional metal hinge structures. Although they have good load-bearing capacity and stability, they are prone to wear and rust after long-term use, resulting in poor door opening and closing or even failure. In addition, traditional hinges are difficult to open quickly in an emergency, which is not conducive to personnel evacuation.

[0003] After searching, China Patent Publication No.: CN215108212U discloses a civil defense door hinge structure, which belongs to the field of civil defense door technology. The civil defense door hinge structure includes a first shell, the front end of the first shell is fixedly connected to two first fixing plates, the adjacent ends of the two first fixing plates are fixedly connected to a first circular fixing block, the left end of the first shell is movably hinged to the second shell through a hinge, and the right end of the second shell is fixedly connected to two second circular fixing blocks, the adjacent ends of the two second circular fixing blocks are fixedly connected to the second circular fixing blocks, the circumferential surfaces of the two first circular fixing blocks are respectively rotatably connected to the second fixing rod and the movable rod, the upper ends of the second fixed rod and the movable rod are respectively movably hinged to the third fixing rod through a hinge shaft, and a handle is provided at the left end of the fixed column, and the steel ball is movably clamped in the handle, which ultimately facilitates human protection and simple operation. However, the above structure does not take into account the complexity of the hinge structure, high cost, inconvenience in maintenance and inability to maintain good performance in long-term use. Utility Model Content

[0004] In order to make up for the above deficiencies, the present invention provides a civil air defense door hinge structure, aiming to improve the problems in the prior art of complex hinge structure, high cost, inconvenient maintenance and failure to maintain good performance in long-term use.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a hinge structure for a civil defense door, comprising a wall, an embedded part provided inside the wall, the outer wall of the embedded part fixedly connected to a fixed block 1, the top surface of the fixed block 1 fixedly connected to a main shaft, the outer wall of the main shaft rotatably connected to a fixed ring, the outer wall of the fixed ring is fixedly connected to the civil defense door, the upper end of the main shaft is fixedly connected to a connecting rod, the other end of the connecting rod is rotatably connected to a support arm, the other end of the support arm is rotatably connected to a movable joint, the outer wall of the movable joint is fixedly connected to the outer wall of the wall, the outer wall of the main shaft is fixedly connected to a limiting device, and the limiting device is used to limit the maximum opening angle of the civil defense door to prevent excessive rotation.

[0006] Through the above technical solution: the wall provides a stable installation environment for the civil air defense door, the embedded parts are made of high-strength metal material, embedded in the wall, and form a solid connection with the wall. On the outer wall of the embedded parts, there is a fixed block 1 fixedly connected, and the top surface of the fixed block 1 is firmly connected and fixedly connected to the main shaft. The main shaft is the core component of the hinge structure and bears the main force and rotation functions. The outer wall of the main shaft is rotatably connected to a fixed ring, and a bearing structure is used between the fixed ring and the main shaft to make the rotation flexible and stable. The fixed ring is fixed on the civil air defense door, and the upper end of the main shaft is fixedly connected to a connecting rod. The other end of the connecting rod is rotatably connected to the support arm, allowing the support arm to rotate freely within a certain range to adapt to the opening and closing of the civil air defense door. The other end of the support arm is rotatably connected to the movable joint. The movable joint is a key component connecting the support arm and the wall. The outer wall is firmly connected to the outer wall of the wall to ensure that the movable joint will not loosen.

[0007] As a further description of the above technical solution:

[0008] The limiting device includes a limiting plate, the outer wall of the limiting plate is fixedly connected to the outer wall of the main shaft, the outer wall of the limiting plate is fixedly connected to a fixing column, the inner wall of the fixing column is provided with a cavity, the inner wall of the cavity is fixedly connected to a spring, the other end of the spring is fixedly connected to a limiting block, and the other end of the limiting block is fixedly connected to a buffer block.

[0009] Through the above technical solution: the material of the limit plate is selected from high-strength, wear-resistant and tough spring steel, which can withstand long-term external force without being easily deformed or damaged. The outer wall of the limit plate is fixedly connected to the outer wall of the main shaft, so that the limit plate can form a stable whole with the main shaft, and move synchronously with the rotation of the main shaft. The outer wall of the limit plate is fixedly connected to a fixed column, and a cavity is opened on the inner wall of the fixed column. The shape of the cavity is regular and the inner wall is smooth to reduce the friction of the internal components during movement. The inner wall of the cavity is fixedly connected to a spring, which plays a key role in buffering and limiting The other end of the spring is firmly connected to a limit block, the shape and size of the limit block match the cavity, and the limit block can move flexibly in the cavity under the action of the spring. The moving range and stroke are limited by the cavity and the spring. The other end of the limit block is fixedly connected with a buffer block. When the civil air defense door rotates to a position close to the maximum opening angle, the buffer block first contacts the blocking component, and under the coordinated action of the spring, the rotation speed of the civil air defense door is gradually slowed down, thereby realizing the limitation of the maximum opening angle of the civil air defense door, while avoiding damage to components caused by hard collision.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the wall is fixedly connected with a second fixing block, and a dust cover is fixedly connected between two adjacent second fixing blocks.

[0012] Through the above technical solution: multiple fixed blocks 2 are fixedly connected to the outer wall of the wall, and a dust cover is fixedly connected between every two adjacent fixed blocks 2. The dust cover ensures that the complete hinge structure is covered. The dust cover must be installed flat without wrinkles or damage. It can effectively block dust and debris from entering, protect the internal hinge structure components, and extend its service life.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the wall is fixedly connected with a locking block, and the outer wall of the civil air defense door is slidably connected with a lock column.

[0015] Through the above technical solution: a locking block is fixedly connected to the outer wall of the wall, the locking block cooperates with the locking column, and the locking column is connected to the outer wall of the civil defense door through sliding. When the civil defense door is closed, the locking column can accurately cooperate with the locking block on the wall to achieve a reliable locking function and enhance the safety of the civil defense door in the closed state.

[0016] As a further description of the above technical solution:

[0017] The embedded part is fixedly connected to the fixing block by bolts, and a warning sign is fixedly connected to the outer wall of the civil air defense door.

[0018] Through the above technical solution: the embedded parts and the fixed block are fixedly connected by bolts. The bolts have excellent shear and tensile properties, which can ensure that the connection between the embedded parts and the fixed block is firm and will not loosen due to long-term use and external forces. The outer wall of the civil defense door is also fixed with a warning sign. The warning sign serves as an effective warning to passers-by and avoids safety accidents caused by improper operation.

[0019] As a further description of the above technical solution:

[0020] One end of the connecting rod is fixedly connected to a fixing piece, and the fixing piece is fixedly connected to the main shaft through a screw.

[0021] Through the above technical solution: the connecting rod is an important component connecting the main shaft and the support arm, and one end of the connecting rod is fixedly connected to a fixing part. The shape and size of the fixing part are adapted to the main shaft. The fixing part is fixedly connected to the main shaft through screws. The screws are precisely matched with the screw holes on the fixing part and the main shaft, so that a firm and reliable connection is formed between the fixing part and the main shaft, ensuring that there will be no loosening or displacement during long-term use.

[0022] As a further description of the above technical solution:

[0023] An anti-loosening washer is provided on one side adjacent to the bolt and the fixing block, and the outer wall of the anti-loosening washer is wavy.

[0024] Through the above technical solution: an anti-loosening gasket is provided on the adjacent side of the bolt and the fixing block, and the outer wall of the anti-loosening gasket is wavy, which increases the friction between the anti-loosening gasket and the bolt and the fixing block. After the bolt is tightened, the anti-loosening gasket can use its own elastic deformation to fit tightly to the surface of the bolt and the fixing block, effectively preventing the bolt from loosening and enhancing the stability and reliability of the connection between the embedded part and the fixing block.

[0025] As a further description of the above technical solution:

[0026] The outer wall of the connecting rod is fixedly connected with a U-shaped block, and the inner wall of the U-shaped block is rotatably connected with the support arm.

[0027] Through the above technical solution: the outer wall of the connecting rod is fixedly connected with a U-shaped block, the U-shaped block is firmly combined with the connecting rod, and the inner wall of the U-shaped block is rotatably connected to the support arm, so that the support arm can rotate around the axis of the U-shaped block and maintain a stable motion state during the rotation process, providing smooth mechanical transmission for the opening and closing actions of the entire civil defense door.

[0028] The utility model has the following beneficial effects:

[0029] 1. In the utility model, when the civil air defense door is closed, the support arm is in a vertical state, and the movable joint fits tightly on the door frame to ensure the stability of the civil air defense door. When the civil air defense door needs to be opened, external force is applied to rotate the civil air defense door around the main axis, and the support arm extends and rotates around the movable joint. The use of common materials and simple structure reduces production and maintenance costs. The dust cover effectively reduces the entry of dust and impurities, extends the service life of the hinge, and reduces maintenance frequency.

[0030] 2. In the present invention, when the civil air defense door reaches the set angle, the buffer block touches the wall to prevent the civil air defense door from continuing to rotate. The buffer block pushes the spring to compress the spring, generating elastic force to reduce the impact force when the civil air defense door is closed. The limit device effectively prevents the door body from excessive rotation, thereby improving safety. The spring reduces the impact force when closing the door, thereby protecting the civil air defense door and the hinge structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a front perspective view of a hinge structure for a civil air defense door proposed in the present invention;

[0032] Figure 2 This is a partial structural diagram of a fixed block 1 of a hinge structure of a civil air defense door proposed in the present invention;

[0033] Figure 3 This is a partial structural diagram of a support arm of a hinge structure for a civil air defense door proposed in the present invention;

[0034] Figure 4This is a partial structural diagram of a limit plate of a hinge structure of a civil air defense door proposed in the present invention;

[0035] Figure 5 This is a schematic diagram of the partial structure of a civil air defense door hinge structure spring proposed in the present invention.

[0036] Legend:

[0037] 1. Wall; 2. Limiting device; 201. Limiting plate; 202. Fixed column; 203. Buffer block; 204. Spring; 205. Limiting block; 206. Cavity; 3. Embedded parts; 4. Fixed block 1; 5. Main shaft; 6. Connecting rod; 7. Support arm; 8. Fixed ring; 9. Civil air defense door; 10. Movable joint; 11. Screw; 12. Fixing part; 13. U-shaped block; 14. Warning sign; 15. Dust cover; 16. Locking block; 17. Locking column; 18. Fixed block 2; 19. Bolt; 20. Anti-loosening gasket. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Please see the attached Figure 1 - Attachment Figure 3 The utility model provides an embodiment: a hinge structure for a civil air defense door, comprising a wall 1, an embedded part 3 is provided inside the wall 1, the outer wall of the embedded part 3 is fixedly connected to a fixed block 4, the top surface of the fixed block 4 is fixedly connected to a main shaft 5, the outer wall of the main shaft 5 is rotatably connected to a fixing ring 8, the outer wall of the fixing ring 8 is fixedly connected to a civil air defense door 9, the upper end of the main shaft 5 is fixedly connected to a connecting rod 6, the other end of the connecting rod 6 is rotatably connected to a supporting arm 7, the other end of the supporting arm 7 is rotatably connected to a movable joint 10, the outer wall of the movable joint 10 is fixedly connected to the outer wall of the wall 1, the outer wall of the main shaft 5 is fixedly connected to a limiting device 2, the limiting device 2 is used to limit the maximum opening angle of the civil air defense door 9 to prevent excessive rotation;

[0040] Specifically, the wall 1 provides a stable installation environment. The embedded part 3 is made of high-strength metal material and is embedded in the wall 1 to form a stable connection with the wall 1. On the outer wall of the embedded part 3, a fixed block 4 is fixedly connected. The top surface of the fixed block 4 is firmly connected and fixedly connected to the main shaft 5. The main shaft 5 is the core component of the hinge structure and bears the main force and rotation functions. The outer wall of the main shaft 5 is rotatably connected to a fixed ring 8. A bearing structure is used between the fixed ring 8 and the main shaft 5, so that the rotation is flexible and stable. The fixed ring 8 is fixed on the civil defense door 9. The upper end of the main shaft 5 is fixedly connected to a connecting rod 6. The other end of the connecting rod 6 is rotatably connected to the support arm 7, allowing the support arm 7 to rotate freely within a certain range to adapt to the opening and closing of the civil defense door 9. The other end of the support arm 7 is rotatably connected to the movable joint 10. The movable joint 10 is a key component connecting the support arm 7 and the wall 1. The outer wall is firmly connected to the outer wall of the wall 1 to ensure that the movable joint 10 will not loosen.

[0041] Please see the attached Figure 3 - Attachment Figure 5 The limiting device 2 includes a limiting plate 201, the outer wall of the limiting plate 201 is fixedly connected to the outer wall of the main shaft 5, the outer wall of the limiting plate 201 is fixedly connected to a fixing column 202, the inner wall of the fixing column 202 is provided with a cavity 206, the inner wall of the cavity 206 is fixedly connected to a spring 204, the other end of the spring 204 is fixedly connected to a limiting block 205, and the other end of the limiting block 205 is fixedly connected to a buffer block 203;

[0042] Specifically, the material of the limit plate 201 is a high-strength, wear-resistant and tough steel material, which can withstand long-term external forces without being easily deformed or damaged. The outer wall of the limit plate 201 is fixedly connected to the outer wall of the main shaft 5, so that the limit plate 201 can form a stable whole with the main shaft 5 and move synchronously with the rotation of the main shaft 5. The outer wall of the limit plate 201 is fixedly connected to the fixed column 202, and the inner wall of the fixed column 202 is provided with a cavity 206. The shape of the cavity 206 is regular, and the inner wall is smooth to reduce the friction of the internal components when moving. The inner wall of the cavity 206 is fixedly connected to the spring 204, which plays a key role in buffering and limiting. The other end of the spring 204 is firmly connected to the limit block 205. The shape and size of the limit block 205 match the cavity 206. The limit block 205 can move flexibly in the cavity 206 under the action of the spring 204. The moving range and stroke are limited by the cavity 206 and the spring 204. The other end of the limit block 205 is fixedly connected to the buffer block 203. When the civil defense door 9 rotates to a point close to the maximum opening angle, the buffer block 203 first contacts the blocking component, and under the coordinated action of the spring 204, the rotation speed of the civil defense door 9 is gradually slowed down, thereby achieving the limitation of the maximum opening angle of the civil defense door 9, while avoiding damage to components caused by hard collisions.

[0043] Please see the attached Figure 1 - Attachment Figure 3 The outer wall of the wall 1 is fixedly connected with a fixed block 2 18, and a dust cover 15 is fixedly connected between the two adjacent fixed blocks 2 18. The outer wall of the wall 1 is fixedly connected with a locking block 16. The outer wall of the civil air defense door 9 is slidably connected with a lock column 17. The embedded part 3 is fixedly connected to the fixed block 1 4 by a bolt 19. The outer wall of the civil air defense door 9 is fixedly connected with a warning sign 14;

[0044] Specifically, the outer wall of the wall 1 is fixedly connected with a plurality of fixing blocks 2 18, and a dust cover 15 is fixedly connected between every two adjacent fixing blocks 2 18. The dust cover 15 ensures that the complete hinge structure is covered. The installation of the dust cover 15 must be flat, without wrinkles and damage, and can effectively prevent dust and debris from entering, protect the internal hinge structure components, and extend their service life. The outer wall of the wall 1 is also fixedly connected with a locking block 16, which cooperates with a lock column 17. The lock column 17 is connected to the outer wall of the civil defense door 9 by sliding. When the civil defense door 9 is closed, the lock column 17 can It accurately cooperates with the locking block 16 on the wall 1 to achieve a reliable locking function and enhance the safety of the civil air defense door 9 in the closed state. The embedded part 3 and the fixed block 4 are fixedly connected by bolts 19. The bolts 19 have excellent shear and tensile properties, which can ensure that the connection between the embedded part 3 and the fixed block 4 is firm and will not loosen due to long-term use and external forces. The outer wall of the civil air defense door 9 is also fixedly connected to a warning sign 14. The warning sign 14 serves as an effective warning to passers-by to avoid safety accidents caused by improper operation.

[0045] Please see the attached Figure 2 - Attachment Figure 4 , one end of the connecting rod 6 is fixedly connected to a fixing piece 12, and the fixing piece 12 is fixedly connected to the main shaft 5 by a screw 11. A locking washer 20 is provided on the side adjacent to the bolt 19 and the fixing block 4. The outer wall of the locking washer 20 is wavy. The outer wall of the connecting rod 6 is fixedly connected to a U-shaped block 13, and the inner wall of the U-shaped block 13 is rotatably connected to the support arm 7;

[0046] Specifically, the outer wall of the connecting rod 6 is fixedly connected to the U-shaped block 13, the U-shaped block 13 is firmly combined with the connecting rod 6, and the inner wall of the U-shaped block 13 is rotatably connected to the support arm 7, so that the support arm 7 can rotate around the axis of the U-shaped block 13 and maintain a stable motion state during the rotation process, providing smooth mechanical transmission for the opening and closing actions of the door.

[0047] Working principle: When the civil air defense door 9 is closed, the support arm 7 is in a vertical state, and the movable joint 10 fits tightly against the door frame, ensuring the stability of the civil air defense door 9. When the civil air defense door 9 needs to be opened, an external force is applied to rotate the civil air defense door 9 around the main axis 5, and the support arm 7 extends and rotates around the movable joint 10. The use of common materials and a simple structure reduces production and maintenance costs. The dust cover 15 effectively reduces the ingress of dust and impurities, extending the service life of the hinge and reducing maintenance frequency.

[0048] When the civil defense door 9 reaches the set angle, the buffer block 203 touches the wall 1, preventing the civil defense door 9 from continuing to rotate. The buffer block 203 pushes the spring 204, compressing the spring 204 to generate elastic force, thereby reducing the impact force when the civil defense door 9 is closed. The limit device 2 effectively prevents the door body from excessive rotation, thereby improving safety. The addition of the spring 204 further reduces the impact force when closing the door, thereby protecting the civil defense door 9 and the hinge structure.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A civil air defense door hinge structure, comprising a wall (1), characterized in that: An embedded part (3) is provided inside the wall (1), the outer wall of the embedded part (3) is fixedly connected to a fixed block (4), the top surface of the fixed block (4) is fixedly connected to a main shaft (5), the outer wall of the main shaft (5) is rotatably connected to a fixed ring (8), the outer wall of the fixed ring (8) is fixedly connected to a human defense door (9), the upper end of the main shaft (5) is fixedly connected to a connecting rod (6), the other end of the connecting rod (6) is rotatably connected to a support arm (7), the other end of the support arm (7) is rotatably connected to a movable joint (10), the outer wall of the movable joint (10) is fixedly connected to the outer wall of the wall (1), the outer wall of the main shaft (5) is fixedly connected to a limiting device (2), and the limiting device (2) is used to limit the maximum opening angle of the human defense door (9) to prevent excessive rotation.

2. The hinge structure for a civil air defense door according to claim 1, characterized in that: The limiting device (2) comprises a limiting plate (201), the outer wall of the limiting plate (201) is fixedly connected to the outer wall of the main shaft (5), the outer wall of the limiting plate (201) is fixedly connected to a fixing column (202), the inner wall of the fixing column (202) is provided with a cavity (206), the inner wall of the cavity (206) is fixedly connected to a spring (204), the other end of the spring (204) is fixedly connected to a limiting block (205), and the other end of the limiting block (205) is fixedly connected to a buffer block (203).

3. The hinge structure for a civil air defense door according to claim 1, characterized in that: A second fixing block (18) is fixedly connected to the outer wall of the wall (1), and a dust cover (15) is fixedly connected between two adjacent second fixing blocks (18).

4. The hinge structure for a civil air defense door according to claim 1, characterized in that: The outer wall of the wall (1) is fixedly connected to a locking block (16), and the outer wall of the civil air defense door (9) is slidably connected to a locking column (17).

5. The hinge structure for a civil air defense door according to claim 1, characterized in that: The embedded part (3) is fixedly connected to the fixing block (4) via bolts (19), and a warning sign (14) is fixedly connected to the outer wall of the civil air defense door (9).

6. The hinge structure for a civil air defense door according to claim 1, characterized in that: One end of the connecting rod (6) is fixedly connected to a fixing member (12), and the fixing member (12) is fixedly connected to the main shaft (5) via a screw (11).

7. The hinge structure for a civil air defense door according to claim 5, characterized in that: An anti-loosening washer (20) is provided on one side of the bolt (19) adjacent to the fixing block (4), and the outer wall of the anti-loosening washer (20) is wavy.

8. The hinge structure for a civil air defense door according to claim 1, characterized in that: The outer wall of the connecting rod (6) is fixedly connected to a U-shaped block (13), and the inner wall of the U-shaped block (13) is rotatably connected to the support arm (7).

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