Adjustable civil air defense door hinge buffer device

Abstract

The utility model relates to the technical field of buffering devices, in particular to an adjustable civil air defense door hinge buffering device which comprises a door frame body, the left end of the front face of the door frame body is fixedly connected with three fixed hinged supports, and guide sliding grooves are formed in the two sides of the middle ends of the inner walls of the fixed hinged supports. An upper pressing cavity and a lower pressing cavity are formed in the upper end and the lower end of an inner cavity of the fixed hinged support correspondingly. According to the adjustable civil air defense door body, the hydraulic buffering principle is combined, the hydraulic flow in the upper pressing cavity and the lower pressing cavity is limited in the matching period of the fixed hinged support, the connecting hinged support and the inserting rod, then the opening speed and the closing speed of the adjustable civil air defense door body can be basically in a constant state, adverse factors caused by instant impact force are avoided, and the service life of the adjustable civil air defense door body is prolonged. And additional buffering equipment does not need to be added, so that the buffering cost is reduced, and the overall attractiveness is very good.

Description

Technical Field

[0001] This utility model relates to the field of buffer device technology, specifically an adjustable air defense door hinge buffer device. Background Technology

[0002] Adjustable air defense doors are protective doors with adjustable functions, mainly used in civil defense projects to allow for flexible adjustments in different situations. Specifically, adjustable air defense doors can adjust their width through mechanical devices to adapt to different transportation needs.

[0003] Currently, adjustable air defense doors require a buffer device after installation with the door frame. If there is no buffer during opening and closing, the connection between the hinge and the door frame and door leaf will vibrate violently due to the instantaneous impact force, which can easily lead to door leaf misalignment, deformation, or failure to close properly. However, traditional buffering methods often involve installing a spring buffer device between the door frame and the door leaf or installing a hydraulic buffer on the door hinge or the edge of the air defense door. The added structure affects the overall aesthetics of the air defense door and increases its buffering cost. Therefore, we propose an adjustable air defense door hinge buffer device. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable hinge buffer device for air defense doors, which has the advantages of good hinge buffering aesthetics, no need to add additional buffering equipment, and reduced buffering costs. It solves the problem that traditional buffering methods often install spring buffering devices between the door frame and the door leaf or install hydraulic buffers on the door hinge or the edge of the air defense door. The added structure affects the overall aesthetics of the air defense door and increases its buffering costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable air defense door hinge buffer device, comprising:

[0006] The door frame has three fixed hinge seats fixedly connected to the left end of the front side. The fixed hinge seats have guide grooves on both sides of the middle of the inner wall. The upper and lower ends of the inner cavity of the fixed hinge seats are respectively provided with an upper pressure cavity and a lower pressure cavity.

[0007] An adjustable air defense door that fits into a door frame, wherein the left end of the adjustable air defense door is fixedly connected to a connecting hinge seat corresponding to a fixed hinge seat;

[0008] The plug rod is located at the bottom of the connecting hinge seat, and guide rail grooves are provided at both ends of the outer surface of the plug rod;

[0009] A movable ring that moves within the inner cavity of a fixed hinge seat has guide sliders that slide in guide grooves at both ends of its outer surface. Guide protrusions that slide in guide rail grooves are fixedly connected to both ends of the inner wall of the movable ring. An upper sealing ring plug and a lower sealing ring plug are fixedly connected to the top and bottom of the movable ring, respectively. Multiple through microholes with equal angles are opened on the inner surfaces of the upper sealing ring plug, the lower sealing ring plug, and the movable ring.

[0010] Preferably, the top of the fixed hinge seat is provided with a plurality of balls distributed at equal angles, and the top of the balls is in contact with the bottom of the connecting hinge seat.

[0011] Preferably, the adjustable air defense door is equipped with a directional indicator and a handle on both the left and right ends of its front side.

[0012] Preferably, the adjustable air-raid shelter door has a sealing gasket bonded to the rear side to fit the door frame.

[0013] Preferably, a mating guide groove is provided between one end of the guide rail groove and the bottom of the plug rod, and the mating guide groove is adapted to the guide protrusion.

[0014] Preferably, one end of the guide protrusion has a hemispherical structure.

[0015] Preferably, the plug rod is adapted to the inner wall of the movable ring.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention combines the principle of hydraulic buffering, which limits the hydraulic flow in the upper and lower pressure chambers during the cooperation of the fixed hinge seat, connecting hinge seat and plug rod. This allows the opening and closing speed of the adjustable air defense door to remain basically constant, avoiding the adverse effects of instantaneous impact force. It also eliminates the need for additional buffering equipment, reduces buffering costs, and improves the overall aesthetics. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the unfolded structure of the fixed hinge base and the plug rod of this utility model;

[0021] Figure 4 This is a cross-sectional view of the fit between the fixed hinge seat and the plug rod of this utility model.

[0022] In the diagram: 1. Door frame; 101. Fixed hinge seat; 102. Ball bearing; 103. Guide groove; 104. Upper pressure chamber; 105. Lower pressure chamber; 2. Adjustable air-raid shelter door; 201. Connecting hinge seat; 202. Indicator; 203. Handle; 204. Sealing gasket; 3. Insert rod; 301. Guide rail groove; 302. Interlocking guide groove; 4. Moving ring; 401. Guide slider; 402. Upper sealing ring plug; 403. Through microhole; 404. Lower sealing ring plug; 405. Guide protrusion. Detailed Implementation

[0023] 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.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The components of this application, including the door frame 1, fixed hinge seat 101, ball bearing 102, guide groove 103, upper pressure chamber 104, lower pressure chamber 105, adjustable air-raid shelter door 2, connecting hinge seat 201, indicator 202, handle 203, sealing gasket 204, plug rod 3, guide rail groove 301, interlocking guide groove 302, moving ring 4, guide slider 401, upper sealing ring plug 402, through microhole 403, lower sealing ring plug 404, and guide protrusion 405, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0027] Example 1

[0028] Please see Figures 1-4 As shown, this utility model provides a technical solution: an adjustable air defense door hinge buffer device, comprising:

[0029] The door frame 1 has three fixed hinge seats 101 fixedly connected to the left end of the front side of the door frame 1. The fixed hinge seats 101 have guide grooves 103 on both sides of the middle of the inner wall. The upper and lower ends of the inner cavity of the fixed hinge seats 101 are respectively provided with an upper pressure cavity 104 and a lower pressure cavity 105.

[0030] An adjustable air defense door 2 that cooperates with the door frame 1 has a connecting hinge 201 that is fixedly connected to the left end of the adjustable air defense door 2, which corresponds to the fixed hinge 101.

[0031] The plug rod 3 is located at the bottom of the connecting hinge 201, and guide rail grooves 301 are provided at both ends of the outer surface of the plug rod 3.

[0032] The movable ring 4 moves within the cavity of the fixed hinge seat 101. Both ends of the outer surface of the movable ring 4 are provided with guide sliders 401 that slide within the guide groove 103. Both ends of the inner wall of the movable ring 4 are fixedly connected with guide protrusions 405 that slide within the guide rail groove 301. The top and bottom of the movable ring 4 are respectively fixedly connected with an upper sealing ring plug 402 and a lower sealing ring plug 404. The inner surfaces between the upper sealing ring plug 402, the lower sealing ring plug 404, and the movable ring 4 are provided with multiple through microholes 403 distributed at equal angles.

[0033] One end of the guide protrusion 405 is a hemispherical structure, and the plug rod 3 is adapted to the inner wall of the moving ring 4.

[0034] This technical solution: By setting up the fixed hinge seat 101, the connecting hinge seat 201, and the plug rod 3, a hinged connection is formed between the door frame 1 and the adjustable air-raid shelter door 2, ensuring the normal opening and closing of the adjustable air-raid shelter door 2. Through the setting of the guide protrusion 405 and the guide rail groove 301, when the adjustable air-raid shelter door 2 is opened outwards, the adjustable air-raid shelter door 2 will drive the connecting hinge seat 201 and the plug rod 3 to rotate. When the plug rod 3 rotates, the position of the guide rail groove 301 will change synchronously, thereby forcing the guide protrusion 405 to slide within the guide rail groove 301. Simultaneously, with the cooperation of the guide slider 401 and the guide slide groove 103, the moving ring 4 can drive the upper sealing ring plug 402 and the lower sealing ring plug 404 to move downwards synchronously. Since the upper sealing ring plug 402 and the lower sealing ring plug 404 are respectively adapted to the upper pressure chamber 104 and the lower pressure chamber 105, thus... When the upper sealing ring plug 402 and the lower sealing ring plug 404 move downward with the moving ring 4, they force the liquid in the lower pressure chamber 105 to enter the upper pressure chamber 104 through the through-hole micro-hole 403. The flow rate of the through-hole micro-hole 403 is limited. Similarly, when the adjustable air defense door 2 closes inward, it forces the guide protrusion 405 to slide in the guide rail groove 301. With the cooperation of the guide slider 401 and the guide groove 103, the moving ring 4 drives the upper sealing ring plug 402 and the lower sealing ring plug 404 to move upward synchronously, forcing the liquid in the upper pressure chamber 104 to enter the lower pressure chamber 105 through the through-hole micro-hole 403. The flow rate of the through-hole micro-hole 403 is limited, thus ensuring that the opening and closing speed of the adjustable air defense door 2 is basically constant. This avoids the adverse effects of instantaneous impact force, eliminates the need for additional buffering devices, and improves the overall aesthetics.

[0035] Example 2

[0036] Based on Embodiment 1, this utility model is as follows: Figures 1-4 As shown, a plurality of balls 102 are provided at the top of the fixed hinge 101 at equal angles, and the top of the balls 102 contacts the bottom of the connecting hinge 201.

[0037] This technical solution: By setting the ball bearing 102, after the plug rod 3 is inserted into the fixed hinge seat 101, the ball bearing 102 can contact the bottom of the connecting hinge seat 201, ensuring the smooth opening and closing of the adjustable air defense door 2 and avoiding the noise problem caused by friction.

[0038] Example 3

[0039] Based on Embodiment 1, this utility model is as follows: Figures 1-4 As shown, the adjustable air defense door 2 has a directional indicator 202 and a handle 203 on both the left and right ends of its front.

[0040] This technical solution, through the setting of the indicator 202 and the handle 203, makes it easier for people to operate according to the instructions and reduces the difficulty of operation.

[0041] Example 4

[0042] Based on Embodiment 1, this utility model is as follows: Figures 1-4 As shown, the adjustable air defense door 2 has a sealing gasket 204 that is bonded to the rear side and fits against the door frame 1.

[0043] This technical solution: By setting the sealing gasket 204, the sealing performance of the door frame 1 and the adjustable air defense door 2 when closed can be improved, and the hard contact between the door frame 1 and the adjustable air defense door 2 when closed can be avoided.

[0044] Example 5

[0045] Based on Embodiment 1, this utility model is as follows: Figures 1-4 As shown, a mating guide groove 302 is provided between one end of the guide rail groove 301 and the bottom of the plug rod 3, and the mating guide groove 302 is adapted to the guide protrusion 405.

[0046] This technical solution: By setting the insertion guide groove 302, the insertion rod 3 can be easily removed from the fixed hinge seat 101 after the adjustable air defense door 2 is opened. The guide protrusion 405 can exit the contact with the insertion rod 3 along the insertion guide groove 302, which facilitates the disassembly and assembly of the adjustable air defense door 2.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An adjustable air-raid shelter door hinge buffer device, characterized in that, include: The door frame (1) has three fixed hinge seats (101) fixedly connected to the left end of the front side of the door frame (1). The fixed hinge seats (101) have guide grooves (103) on both sides of the middle of the inner wall. The upper and lower ends of the inner cavity of the fixed hinge seats (101) are respectively provided with an upper pressure cavity (104) and a lower pressure cavity (105). An adjustable air defense door (2) that cooperates with the door frame (1) has a connecting hinge (201) that is fixedly connected to the left end of the adjustable air defense door (2) and corresponds to the fixed hinge (101); The plug rod (3) is located at the bottom of the connecting hinge (201), and guide rail grooves (301) are provided at both ends of the outer surface of the plug rod (3); A movable ring (4) is active in the inner cavity of the fixed hinge seat (101). Both ends of the outer surface of the movable ring (4) are provided with guide sliders (401) that slide in the guide groove (103). Both ends of the inner wall of the movable ring (4) are fixedly connected with guide protrusions (405) that slide in the guide rail groove (301). The top and bottom of the movable ring (4) are respectively fixedly connected with an upper sealing ring plug (402) and a lower sealing ring plug (404). The inner surfaces of the upper sealing ring plug (402), the lower sealing ring plug (404) and the movable ring (4) are provided with a plurality of through microholes (403) distributed at equal angles.

2. The adjustable air-raid shelter door hinge buffer device according to claim 1, characterized in that: The top of the fixed hinge seat (101) is provided with a plurality of balls (102) distributed at equal angles, and the top of the balls (102) is in contact with the bottom of the connecting hinge seat (201).

3. The adjustable air-raid shelter door hinge buffer device according to claim 1, characterized in that: The adjustable air defense door (2) is equipped with a directional indicator (202) and a handle (203) on both the left and right sides of the front.

4. The adjustable air-raid shelter door hinge buffer device according to claim 1, characterized in that: The adjustable air defense door (2) has a sealing gasket (204) that fits against the door frame (1) on its rear side.

5. The adjustable air-raid shelter door hinge buffer device according to claim 1, characterized in that: A mating guide groove (302) is provided between one end of the guide rail groove (301) and the bottom of the plug rod (3), and the mating guide groove (302) is adapted to the guide protrusion (405).

6. The adjustable air-raid shelter door hinge buffer device according to claim 1, characterized in that: One end of the guide bump (405) is a hemispherical structure.

7. The adjustable air-raid shelter door hinge buffer device according to claim 1, characterized in that: The plug rod (3) is adapted to the inner wall of the moving ring (4).

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