Air-tight door with buffer structure

Abstract

The utility model discloses an air-tight door with a buffer structure, which comprises a door frame and a door body, two groups of symmetrically distributed connecting rods are arranged between the door body and the door frame, two ends of each connecting rod are respectively provided with a first sliding block and a second sliding block, two groups of symmetrically distributed bidirectional screws are arranged in the door frame, and the first sliding block and the second sliding block are arranged in the door frame. The first sliding block is slidably connected with the two-way screw in a sleeved mode, a first check block and a second check block are arranged on the two sides of the first sliding block respectively, and the two-way screw is sleeved with a first spring and a second spring. The arranged connecting rod is matched with the first sliding block, the second sliding block, the first spring and the second spring to achieve buffering protection in the opening and closing process of the cover sealing door, and sliding of the first sliding block is limited by the two-way screw and a sliding groove formed in the door frame all the time; even if the door body is subjected to huge external force and under the action of the first sliding block, the second sliding block and the connecting rod, buffering protection on the door body can still be guaranteed, and impact and damage caused by violent opening and closing of the door body are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sealed doors, in particular to an airtight door with a buffer structure. Background Technique

[0002] An airtight door refers to a door that can isolate a room from the outside world and maintain an airtight state, and has basic functions such as fire prevention, smoke prevention and waterproofing. According to different fire prevention performances, airtight doors can be divided into several grades, such as 30-minute fire doors, 60-minute fire doors and 90-minute fire doors, etc. At the same time, airtight doors are also divided into single-leaf and double-leaf types. Single-leaf doors are suitable for rooms with smaller areas, while double-leaf doors are suitable for rooms with larger areas.

[0003] Referring to the Chinese patent with the application number: "CN 220889954 U", specifically "an airtight door with a buffer structure", this patent solves the problems of "when the airtight door is quickly opened, the side of the airtight door will directly collide with the door bracket, and depressions will appear on the surfaces of both, which cannot buffer the force of opening the airtight door, and at the same time, the airtight door cannot handle noise".

[0004] In this utility model, through a fixed shaft, a fixed cylinder, a tension spring, a sealing gasket, a buffer column, a reinforcing rib, a waterproof layer and a return spring, the force of the airtight door frame continuing to impact to one side is reduced, and the sound-absorbing cotton arranged plays a noise reduction effect; this buffer structure can achieve a certain degree of buffer protection for the sealed door when the sealed door rotates freely, but the buffer protection effect for the sealed door is poor when the sealed door is subjected to a huge external force, and the elastic limits of the tension spring and the return spring arranged in this sealing structure cannot be adjusted, and the limits and ranges of buffer protection for the sealed door cannot be adjusted either. In the case of a situation where the door needs to be quickly closed, the buffer structure may generate resistance to the closing or opening of the sealed door, thereby triggering a safety accident. Content of the Utility Model

[0005] The purpose of the utility model is to provide an airtight door with a buffer structure to solve the problems put forward in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: A sealed door with a buffer structure, including a door frame and a door body. The door body is rotatably connected to the door frame through a rotating rod. There are two groups of symmetrically distributed connecting rods between the door body and the door frame. The two ends of the connecting rod are respectively provided with a first slider and a second slider. The connecting rod is rotatably connected to the first slider and the second slider through a rotating shaft respectively. The first slider is slidably connected to the door frame, and the second slider is slidably connected to the door body. There are two groups of symmetrically distributed bidirectional screws in the door frame. The first slider is slidably sleeved on the bidirectional screw. The two sides of the first slider are respectively provided with a first stop block and a second stop block. A first spring and a second spring are sleeved on the bidirectional screw. There are two groups of symmetrically distributed lead screws in the door body. A gear is sleeved on the rotating rod, and a rack is arranged in the door frame.

[0007] As a further preference of this technical solution, first synchronous wheels are sleeved on the left ends of the two groups of bidirectional screws. A first synchronous belt is arranged in the door frame, and the first synchronous belt is respectively connected to the two groups of first synchronous wheels in a transmission manner.

[0008] As a further preference of this technical solution, the two ends of the bidirectional screw respectively penetrate through the door frame and are rotatably connected to the door frame. The first stop block and the second stop block are both slidably connected to the door frame. The two ends of the bidirectional screw respectively penetrate through the first stop block and the second stop block and are respectively threadedly connected to the first stop block and the second stop block.

[0009] As a further preference of this technical solution, the two ends of the first spring are respectively fixedly connected to the first stop block and the first slider, and the two ends of the second spring are respectively fixedly connected to the first slider and the second stop block.

[0010] As a further preference of this technical solution, the two ends of the two groups of lead screws respectively penetrate through the door body and are rotatably connected to the door body. The two groups of lead screws respectively penetrate through the corresponding second sliders and are threadedly connected to the second sliders. Second synchronous wheels are sleeved on the left ends of the two groups of lead screws. A second synchronous belt is arranged in the door body, and the second synchronous belt is respectively connected to the two groups of second synchronous wheels in a transmission manner.

[0011] As a further preference of this technical solution, the rack is meshed with the gear. The rack is slidably connected to the door frame. A metal block is fixedly installed on the rack. A metal tube is arranged in the door frame, and a power supply device is arranged in the door frame.

[0012] As a further preference of this technical solution, the metal tube is arranged corresponding to the metal block. A solenoid coil is sleeved on the metal tube, and the two ends of the solenoid coil are respectively connected to the positive and negative electrodes of the power supply device.

[0013] The present utility model provides a sealed door with a buffer structure, having the following beneficial effects:

[0014] (1) The utility model realizes the buffer protection during the opening and closing process of the cover sealing door through the arranged connecting rod in cooperation with the first slider, the second slider, the first spring and the second spring. And the sliding of the first slider is always restricted by the bidirectional screw rod and the chute arranged in the door frame, so that even under the action of a huge external force, the door body can still ensure the buffer protection of the door body under the action of the first slider, the second slider and the connecting rod, avoiding the impact and damage caused by the violent opening and closing of the door body. And under the action of the first stop block, the second stop block and the screw rod, the positions of the first spring, the second spring and the second slider are adjusted, and the buffer protection strength of the buffer structure is adjusted according to the actual use requirements. In the case of needing to quickly close the door, the pre-tightening force and the prior compression amount of the first spring and the second spring are reduced, and the resistance applied by the buffer structure during the opening and closing process of the door body is reduced, so that the door body can be quickly closed or opened.

[0015] (2) The utility model limits the position of the door body in the open, closed or closing state through the arranged rack and gear, so that the sealing door cannot be randomly opened or closed without the corresponding switch action, avoiding the influence on the use performance of the sealing door in the corresponding occasion caused by the random opening or closing of the sealing door during the use process; by energizing the power supply device, the solenoid coil is energized, and the energized solenoid coil and the metal tube are equivalent to a bar magnet externally. The magnetism generates a strong attraction force on the metal block to limit the position of the rack, and then the gear engaged with the rack cannot rotate, fixing the rotating rod, and further fixing the angle of the door body, so that the door body cannot be rotated without turning off the power, avoiding the malicious opening and closing of the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the utility model;

[0017] Figure 2 is the structural schematic diagram of the door frame of the utility model;

[0018] Figure 3 is of the utility model Figure 2 - enlarged structural view at position A;

[0019] Figure 4 is the structural schematic diagram of the connecting rod of the utility model;

[0020] Figure 5 is the structural schematic diagram of the door body of the utility model;

[0021] Figure 6 is of the utility model Figure 5 - enlarged structural view at position B;

[0022] In the figure: 1, door frame; 2, door body; 3, connecting rod; 4, first slider; 5, second slider; 6, bidirectional screw; 7, first stop block; 8, second stop block; 9, first spring; 10, second spring; 11, first synchronous pulley; 12, first synchronous belt; 13, lead screw; 14, second synchronous pulley; 15, second synchronous belt; 16, rotating rod; 17, gear; 18, rack; 19, metal block; 20, metal tube; 21, solenoid coil; 22, power supply device. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] The technical solution provided by the present invention is as follows: As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, in this embodiment, an airtight door with a buffer structure includes a door frame 1 and a door body 2. The door body 2 is rotatably connected to the door frame 1 through a rotating rod 16. There are two groups of symmetrically distributed connecting rods 3 between the door body 2 and the door frame 1. The two ends of the connecting rod 3 are respectively provided with a first slider 4 and a second slider 5. The connecting rod 3 is rotatably connected to the first slider 4 and the second slider 5 through a rotating shaft respectively. The first slider 4 is slidably connected to the door frame 1, and the second slider 5 is slidably connected to the door body 2. There are two groups of symmetrically distributed bidirectional screws 6 in the door frame 1. The first slider 4 is slidably sleeved on the bidirectional screw 6. The two sides of the first slider 4 are respectively provided with a first stop block 7 and a second stop block 8. A first spring 9 and a second spring 10 are sleeved on the bidirectional screw 6. There are two groups of symmetrically distributed lead screws 13 in the door body 2. A gear 17 is sleeved on the rotating rod 16. A rack 18 is provided in the door frame 1. The left ends of the two groups of bidirectional screws are respectively sleeved with a first synchronous pulley 11. A first synchronous belt 12 is provided in the door frame 1. The first synchronous belt 12 is respectively in transmission connection with the two groups of first synchronous pulleys 11. The two ends of the bidirectional screw 6 respectively penetrate through the door frame 1 and are rotatably connected to the door frame 1. The first stop block 7 and the second stop block 8 are both slidably connected to the door frame 1. The two ends of the bidirectional screw 6 respectively penetrate through the first stop block 7 and the second stop block 8 and are respectively threadedly connected to the first stop block 7 and the second stop block 8. The two ends of the first spring 9 are respectively fixedly connected to the first stop block 7 and the first slider 4. The two ends of the second spring 10 are respectively fixedly connected to the first slider 4 and the second stop block 8. The two ends of the two groups of lead screws 13 respectively penetrate through the door body 2 and are rotatably connected to the door body 2. The two groups of lead screws 13 respectively penetrate through the corresponding second sliders 5 and are threadedly connected to the second sliders 5. The left ends of the two groups of lead screws 13 are respectively sleeved with a second synchronous pulley 14. A second synchronous belt 15 is provided in the door body 2. The second synchronous belt 15 is respectively in transmission connection with the two groups of second synchronous pulleys 14.

[0025] The buffer protection during the opening and closing of the cover sealing door is achieved through the arranged connecting rod 3 in cooperation with the first slider 4, the second slider 5, the first spring 9 and the second spring 10. The sliding of the first slider 4 is always restricted by the bidirectional screw rod 6 and the chute provided in the door frame 1, so that even when the door body 2 is subjected to a huge external force, the buffer protection of the door body 2 can still be ensured under the action of the first slider 4, the second slider 5 and the connecting rod 3, avoiding the impact and damage caused by the violent opening and closing of the door body 2. And under the action of the first stop block 7, the second stop block 8 and the lead screw 13, the positions of the first spring 9, the second spring 10 and the second slider 5 are adjusted, and the buffer protection strength of the buffer structure is adjusted according to the actual use requirements.

[0026] As Figure 5 and Figure 6 As shown, the rack 18 is meshed and connected with the gear 17. The rack 18 is slidably connected with the door frame 1. A metal block 19 is fixedly installed on the rack 18. A metal tube 20 is provided in the door frame 1. A power supply device 22 is provided in the door frame 1. The metal tube 20 is arranged corresponding to the metal block 19. A solenoid coil 21 is sleeved on the metal tube 20. The two ends of the solenoid coil 21 are respectively connected to the positive and negative electrodes of the power supply device 22.

[0027] The position of the door body 2 in the open or closed state is limited through the arranged rack 18 and gear 17, so that the sealing door cannot be randomly opened or closed without the corresponding switch action, avoiding the influence on the use performance of the sealing door in the corresponding occasion caused by the random opening or closing of the sealing door during use.

[0028] The utility model provides an airtight door with a buffer structure, and the specific working principle is as follows: During the opening and closing process of the door body 2, the second slider 5 and the connecting rod 3 drive the first slider 4 to slide in the door frame 1. When the first slider 4 slides, it squeezes or stretches the first spring 9 and the second spring 10, thereby realizing the buffer protection for the rotational opening and closing of the door body 2. Moreover, the sliding of the first slider 4 is always restricted by the bidirectional screw rod 6 and the chute formed in the door frame 1, so that even under the action of a huge external force, the door body 2 can still ensure the buffer protection for the door body 2 under the action of the first slider 4, the second slider 5 and the connecting rod 3, avoiding the impact and damage caused by the violent opening and closing of the door body 2. And under the action of the first stop block 7, the second stop block 8 and the screw rod 13, the positions of the first spring 9, the second spring 10 and the second slider 5 are adjusted, and the buffer protection strength of the buffer structure is adjusted according to the actual use requirements. In the case of needing to quickly close the door, the pre-tightening force and the prior compression amount of the first spring 9 and the second spring 10 are reduced, and the resistance exerted by the buffer structure during the opening and closing process of the door body 2 is reduced, so that the door body 2 can be quickly closed or opened. By energizing the power supply device 22, the solenoid coil 21 is energized. The energized solenoid coil 21 and the metal tube 20 are equivalent to a bar magnet externally. The magnetism generates a strong attraction force on the metal block 19 to limit the position of the rack 18. Furthermore, the gear 17 engaged with the rack 18 cannot rotate, fixing the rotating rod 16, and thus fixing the angle of the door body 2, making it impossible to rotate the door body 2 without turning off the power, avoiding the malicious opening and closing of the door body 2.

[0029] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An airtight door with a buffer structure, comprising a door frame (1) and a door body (2), characterized in that: The door body (2) is rotatably connected to the door frame (1) through a rotating rod (16). There are two groups of symmetrically distributed connecting rods (3) between the door body (2) and the door frame (1). The two ends of the connecting rod (3) are respectively provided with a first slider (4) and a second slider (5). The connecting rod (3) is rotatably connected to the first slider (4) and the second slider (5) through a rotating shaft respectively. The first slider (4) is slidably connected to the door frame (1), and the second slider (5) is slidably connected to the door body (2). There are two groups of symmetrically distributed bidirectional screws (6) in the door frame (1). The first slider (4) is slidably sleeved on the bidirectional screw (6). The two sides of the first slider (4) are respectively provided with a first stop block (7) and a second stop block (8). The bidirectional screw (6) is sleeved with a first spring (9) and a second spring (10). There are two groups of symmetrically distributed lead screws (13) in the door body (2). A gear (17) is sleeved on the rotating rod (16). A rack (18) is arranged in the door frame (1).

2. The airtight door with a buffer structure according to claim 1, wherein: Both ends of the two groups of bidirectional screws are sleeved with a first synchronous pulley (11). A first synchronous belt (12) is arranged in the door frame (1). The first synchronous belt (12) is respectively in transmission connection with the two groups of first synchronous pulleys (11).

3. The airtight door with a buffer structure according to claim 1, characterized in that: The two ends of the bidirectional screw (6) respectively penetrate through the door frame (1) and are rotatably connected to the door frame (1). Both the first stop block (7) and the second stop block (8) are slidably connected to the door frame (1). The two ends of the bidirectional screw (6) respectively penetrate through the first stop block (7) and the second stop block (8) and are respectively in threaded connection with the first stop block (7) and the second stop block (8).

4. The airtight door with a buffer structure according to claim 1, wherein: Both ends of the first spring (9) are fixedly connected to the first stop block (7) and the first slider (4) respectively. Both ends of the second spring (10) are fixedly connected to the first slider (4) and the second stop block (8) respectively.

5. The airtight door with a buffer structure according to claim 1, wherein: Both ends of the two groups of lead screws (13) respectively penetrate through the door body (2) and are rotatably connected to the door body (2). The two groups of lead screws (13) respectively penetrate through the corresponding second sliders (5) and are in threaded connection with the second sliders (5). Both ends of the two groups of lead screws (13) are sleeved with a second synchronous pulley (14). A second synchronous belt (15) is arranged in the door body (2). The second synchronous belt (15) is respectively in transmission connection with the two groups of second synchronous pulleys (14).

6. The airtight door with a buffer structure according to claim 1, characterized in that: The rack (18) is in meshing connection with the gear (17). The rack (18) is slidably connected to the door frame (1). A metal block (19) is fixedly installed on the rack (18). A metal tube (20) is arranged in the door frame (1). A power supply device (22) is arranged in the door frame (1).

7. The airtight door with a buffer structure according to claim 6, characterized in that: The metal tube (20) is arranged corresponding to the metal block (19). A solenoid coil (21) is sleeved on the metal tube (20). Both ends of the solenoid coil (21) are respectively connected to the positive and negative poles of the power supply device (22).

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