Fireproof door
By introducing buffer components and the thermal insulation properties of perlite boards into fire doors, the problem of fire door deformation due to collisions when closed is solved, thereby improving stability and fire resistance and extending service life.
Patent Information
- Application Number
- CN202520360946.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-04
AI Technical Summary
Existing fire doors deform due to impact when closed, creating gaps that affect their fire resistance and prevent them from being used for extended periods.
The buffer assembly includes a cylinder, piston, spring, and rotating rod. The sliding and rotating of the slider and connecting rod achieve a buffering effect, reducing the impact force when closing. Combined with the heat insulation properties of the perlite board, it enhances the stability and fire resistance of the door.
It effectively reduces the impact force when fire doors close, extends their service life, improves their stability and heat insulation performance, enhances their fire resistance, and reduces the impact of fire on the indoor environment.
Smart Images
Figure CN223806039U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fireproof door technical field especially relates to a fireproof door. BACKGROUND
[0002] In the development process of human society, with more and more buildings and tend to be complex, the harm caused by fire is increasingly highlighted. Especially in densely populated residential places, commercial buildings and various public facilities, once a fire occurs, the fire is easy to spread quickly, which poses a great threat to people's life and property safety. In order to block the fire to some extent and gain time for rescue and personnel evacuation, the demand for a door with fireproof function arises at the historic moment.
[0003] The fireproof door is usually composed of door frame, door leaf, fireproof glass, door closer, sequencer, fireproof lock, fireproof hinge and latch, cover joint plate and sealing element, etc. The door frame and the door leaf are the main part of the fireproof door. The door frame is usually made of steel or other fireproof materials, and the door leaf is made of steel plate, wood board or other fireproof materials, and filled with fireproof insulation materials inside.
[0004] Now some fireproof doors collide between the fireproof door and the door frame when closing, which causes deformation of the fireproof door and the door frame over time, resulting in a gap between the fireproof door and the door frame, poor fireproof performance of the fireproof door, and thus unable to meet the use requirements, so that it cannot be used for a long time. Therefore, a fireproof door is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] In order to make up for the above shortcomings, the utility model provides a fireproof door, which aims to improve the problem that the fireproof door in the prior art cannot reduce the buffering force when closing.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] A fireproof door, comprising a door frame, the inner side top of the door frame is fixedly connected with a supporting plate, the inner wall of the door frame is rotatably connected with a steel plate, the top of the supporting plate is fixedly connected with a baffle on both sides, the baffle is fixedly connected with a fixed block one on both ends of one side, the fixed block one is fixedly connected with a buffer assembly on the side away from the baffle, the top inner wall of the door frame is fixedly connected with a connecting column, the connecting column is slidably connected with two sliding blocks on the outside, the sliding blocks are fixedly connected with a fixed block three on the side away from the baffle, the fixed block three is rotatably connected with a rotating rod in the inside, the other end of the rotating rod is rotatably connected with a fixed block four, and the sliding blocks are fixedly connected with a spring two on the side close to each other.
[0008] As a further description of the above technical scheme:
[0009] The buffer assembly includes a cylinder, an end cover is fixedly connected to one side of the cylinder away from the fixed block one, a connecting rod is fixedly connected to one side of the end cover close to the fixed block one, a piston is fixedly connected to one side of the connecting rod close to the end cover, a fixed block two is fixedly connected to one side of the cylinder close to the fixed block one, a spring one is fixedly connected to one side of the end cover close to the cylinder, and one end of the cylinder away from the end cover is fixedly connected to one side of the fixed block one;
[0010] As a further description of the above technical solution:
[0011] The steel plate is fixedly connected with a sealing layer away from the baffle, the sealing layer is fixedly connected with a heat insulation layer away from the baffle, the heat insulation layer is fixedly connected with a reinforcing layer away from the sealing layer, and the reinforcing layer is fixedly connected with an inner core layer away from the heat insulation layer.
[0012] As a further description of the above technical solution:
[0013] One side of the steel plate is provided with a handle, and the inner side of the door frame is fixedly connected with two hinges away from one side of the handle.
[0014] As a further description of the above technical solution:
[0015] Both sides of the baffle are fixedly connected to the inner side top of the door frame, and the bottom of the supporting plate is in contact with the top of the steel plate.
[0016] As a further description of the above technical solution:
[0017] The connecting rod is slidingly connected in the interior of the fixed block two, and the exterior of the piston is in contact with the cylinder.
[0018] As a further description of the above technical solution:
[0019] The interior of the spring two is slidingly connected to the exterior of the connecting column, and one end of the spring one away from the end cover is fixedly connected to one side of the fixed block one.
[0020] As a further description of the above technical solution:
[0021] The inner core layer is fixedly connected to the steel plate away from the reinforcing layer, and the other end of the fixed block four is fixedly connected to the baffle.
[0022] The utility model has the advantages of the following beneficial effects:
[0023] 1. In the utility model, through closing the steel sheet, so that the steel sheet will push the baffle to move, and then the baffle movement will push the fixed block four and the end cap to move, and then the fixed block four movement will drive the rotating rod to rotate, and then the rotating rod rotation will drive the fixed block three to move, and then the fixed block three movement will drive the sliding block to slide on the connecting column and extrude spring two, and simultaneously the end cap movement will drive the connecting rod and the piston to slide in the cylinder, so that the piston will extrude the gas inside the cylinder close to the fixed block one end, and then the buffering effect is achieved, and then the stability of the device is improved.
[0024] 2. In the utility model, the heat insulation layer is perlite plate, and the good fireproofing and heat insulation performance and the light weight reduce the influence of heat on the temperature of the space on the other side of the door to the maximum extent, and then the temperature rising speed of the other side of the door is delayed, and the indoor environment temperature is maintained relatively safe and comfortable, and the overall performance of the fireproof door is improved. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 It is a three-dimensional schematic view of the fireproof door proposed in the utility model;
[0026] Figure 2 It is a structural schematic view of the baffle of the fireproof door proposed in the utility model;
[0027] Figure 3 It is Figure 2 It is an enlarged view of A in the utility model;
[0028] Figure 4 It is Figure 2 It is an enlarged view of B in the utility model.
[0029] LEGEND:
[0030] 1, door frame; 2, steel sheet; 3, support plate; 4, baffle; 5, fixed block one; 6, cylinder; 7, end cap; 8, connecting rod; 9, piston; 10, fixed block two; 11, spring one; 12, connecting column; 13, sliding block; 14, fixed block three; 15, rotating rod; 16, fixed block four; 17, spring two; 18, sealing layer; 19, heat insulation layer; 20, reinforcing layer; 21, inner core layer; 22, hinge; 23, handle. DETAILED DESCRIPTION
[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0032] Referring to Figures 1 to 3 The utility model provides an embodiment: a fireproof door, the inner side top of door frame 1 is fixedly connected with support plate 3, support plate 3 can play the effect of firm support to the relevant components of top, ensure the position stability of the component with it contact, the inner wall of door frame 1 is rotatably connected with steel sheet 2, steel sheet 2 as the main part of door body, bear the function of closing and opening, the bottom of support plate 3 and the top of steel sheet 2 contact, such contact mode makes support plate 3 can play certain support and location effect to steel sheet 2 in the process of steel sheet 2 rotation, the both sides of the top of support plate 3 are fixedly connected with baffle 4, baffle 4 can play the role of protection and positioning to the relevant buffer component of its one side, the both sides of baffle 4 are fixedly connected in the inner side top of door frame 1, pass through such fixed connection, make the position of baffle 4 on door frame 1 very stable.
[0033] The both ends of one side of baffle 4 are fixedly connected with fixed block no. 5, and the fixed block no. 5 plays the role of connection and force transmission, which can effectively transmit the force received by the baffle 4 to the buffer assembly connected thereto, the side away from the baffle 4 of the two fixed blocks no. 5 is fixedly connected with a buffer assembly, the buffer assembly can effectively reduce the impact force generated by the collision between components when the fireproof door is closed, protect the door body and related components, and prolong the service life thereof, the buffer assembly comprises a gas cylinder 6, the gas cylinder 6 can realize the buffering function through the compression of gas and the like, the side away from the fixed block no. 5 of the gas cylinder 6 is fixedly connected with an end cover 7, the end cover 7 can seal one end of the gas cylinder 6, and when the end cover 7 is pushed by external force, the end cover 7 can drive the components connected thereto to move, the side close to the fixed block no. 5 of the end cover 7 is fixedly connected with a connecting rod 8, the connecting rod 8 serves as a component for connecting the end cover 7 and a piston 9, and can accurately transmit the force from the end cover 7.
[0034] The side close to the end cover 7 of the connecting rod 8 is fixedly connected with the piston 9, the piston 9 slides in the gas cylinder 6 under the driving of the connecting rod 8, the gas pressure in different regions of the gas cylinder 6 is changed to buffer external force, the stability of the fireproof door when closing is ensured, and damage caused by excessive impact force is avoided, the outside of the piston 9 is in contact with the gas cylinder 6, the close contact ensures that the gas in the gas cylinder 6 can be effectively compressed or released when the piston 9 slides in the gas cylinder 6, the side close to the fixed block no. 5 in the gas cylinder 6 is fixedly connected with a fixed block no. 10, the fixed block no. 10 can play the role of guiding and limiting the connecting rod 8, and the connecting rod 8 is slidingly connected in the inside of the fixed block no. 10, and the sliding connection mode makes the connecting rod 8 move stably in the fixed block no. 10 when being stressed.
[0035] The end cover 7 is fixedly connected with a spring 11 near one side of the cylinder 6. The spring 11 can assist the cylinder 6 to further play a buffering role. When an impact force is generated when the door is closed, the spring 11 can absorb part of the energy through its elastic deformation, and cooperates with the buffering role of the cylinder 6 to better reduce the impact. The end of the spring 11 away from the end cover 7 is fixedly connected to one side of the fixed block 5. Through such fixed connection, when the spring 11 is stretched or compressed under stress, the fixed block 5 can be used as a support point. The end of the cylinder 6 away from the end cover 7 is fixedly connected to one side of the fixed block 5. The top inner wall of the door frame 1 is fixedly connected with a connecting column 12. The connecting column 12 provides track support for sliding of the sliding block 13 and the like. The connecting column 12 is slidingly connected with two sliding blocks 13. The sliding blocks 13 slide on the connecting column 12 and can change positions according to stress conditions. The sides of the two sliding blocks 13 away from the baffle 4 are fixedly connected with fixed blocks 14. The fixed blocks 14 can transmit the force received by the sliding blocks 13 to the rotating rod 15, so that the rotating rod 15 rotates according to the corresponding mechanical principle, thereby driving other components to move and achieve a buffering effect.
[0036] The rotating rod 15 is rotatably connected to the inside of the fixed block 14. The rotating rod 15 can flexibly rotate under the cooperation of the fixed block 14 and the fixed block 16, transmit the force from the fixed block 14 to the fixed block 16, and further drive the baffle 4 and other related components to move. The other end of the rotating rod 15 is rotatably connected with the fixed block 16. Through the rotary connection with the rotating rod 15, the fixed block 16 can move correspondingly when the rotating rod 15 rotates. The other end of the fixed block 16 is fixedly connected to the baffle 4. In this way, the fixed block 16 can accurately act the force transmitted by the rotating rod 15 on the baffle 4. The sides close to each other of the two sliding blocks 13 are fixedly connected with springs 17. The springs 17 will elastically deform due to the extrusion of the sliding blocks 13 when the sliding blocks 13 slide. The inside of the spring 17 is slidingly connected to the outside of the connecting column 12. Such connection mode ensures the relative stability of the position of the spring 17.
[0037] Referring to Figure 1 , Figure 2 and Figure 4The side of the steel plate 2 away from the baffle 4 is fixedly connected with a sealing layer 18, the sealing layer 18 is an intumescent fire seal, which can effectively fill the gap and prevent the spread of fire and smoke when a fire occurs, and it closely adheres to the door frame 1 and other parts in daily use, thereby playing a sealing role, and once a high-temperature fire occurs, it will expand to better block possible gaps and prevent the spread of fire and smoke through the door gap, thereby ensuring fire safety; the side of the sealing layer 18 away from the baffle 4 is fixedly connected with a heat insulation layer 19, the heat insulation layer 19 is a perlite plate, which has good fireproof and heat insulation performance and is relatively light, thereby effectively reducing heat transfer and reducing the temperature rise on the other side of the door in a fire, and the heat insulation layer 19 is located behind the sealing layer 18 to further block heat and prevent rapid heat conduction to the other side of the door, thereby providing better heat insulation protection for the space behind the door and reducing the impact of the fire on the indoor environment.
[0038] The side of the heat insulation layer 19 away from the sealing layer 18 is fixedly connected with a reinforcing layer 20, the reinforcing layer 20 is cold-rolled steel or other steel materials, which can provide mechanical strength and certain fire resistance, thereby enhancing the structural strength of the entire door body, making the door better maintain its integrity in a fire and resist the damage of high temperature and other adverse factors to the door structure; the side of an inner core layer 21 away from the reinforcing layer 20 is fixedly connected to the steel plate 2, the inner core layer 21 is a vermiculite core material with good thermal insulation, and its layered structure can effectively block heat propagation and improve the fire resistance limit of the fireproof door, and the inner core layer 21 is located at the core position of the door body to fully utilize its heat insulation properties and maximize heat transfer blocking.
[0039] Working principle: when the fireproof door needs to be closed, the steel plate 2 is closed, and since the steel plate 2 has inertia, the steel plate 2 is closed, thereby the steel plate 2 will squeeze the baffle 4 to move, and the movement of the baffle 4 will drive the fixed block four 16 to move, and the movement of the fixed block four 16 will drive the rotating rod 15 to rotate, thereby the rotating rod 15 rotating will drive the fixed block three 14 to move, and the movement of the fixed block three 14 will drive the sliding block 13 to slide on the connecting column 12, and the sliding of the sliding block 13 will squeeze the spring two 17, and the movement of the baffle 4 will also drive the end cover 7 to move, and the movement of the end cover 7 will drive the connecting rod 8 to move, and the connecting rod 8 will drive the piston 9 to slide inside the air cylinder 6, and thus the piston 9 will squeeze the gas inside the air cylinder 6 close to the side of the fixed block one 5 to achieve the effect of buffering, thereby reducing the impact of the fireproof door.
[0040] The structure of the fireproof door, the sealing layer 18 is an expanded fireproof sealing strip, which can effectively fill the gap and prevent the spread of fire and smoke when a fire occurs, the heat insulation layer 19 is a perlite plate, which has good fireproof and heat insulation performance and is light in weight, can effectively reduce heat transfer, and can reduce the temperature rise speed of the other side of the door in a fire, the reinforcing layer 20 is cold-rolled steel or other steel materials, which can provide mechanical strength and certain fire resistance, and the inner core layer 21 is a vermiculite core material, which has good heat insulation, the layered structure of which can effectively prevent heat propagation and can improve the fire resistance limit of the fireproof door, thereby improving the overall fireproof performance of the fireproof plate.
[0041] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.
Claims
1. A fire door comprising a door frame (1), characterized in that: The inner side top of the door frame (1) is fixedly connected with a support plate (3), the inner wall of the door frame (1) is rotatably connected with a steel plate (2), the top of the support plate (3) is fixedly connected with a baffle (4) on both sides, the side of the baffle (4) is fixedly connected with a fixed block one (5) at both ends, the side away from the baffle (4) of the two fixed block ones (5) is fixedly connected with a buffer assembly, the top inner wall of the door frame (1) is fixedly connected with a connecting column (12), the outer portion of the connecting column (12) is slidably connected with two sliding blocks (13), the side away from the baffle (4) of the two sliding blocks (13) is fixedly connected with a fixed block three (14), the inner portion of the fixed block three (14) is rotatably connected with a rotating rod (15), the other end of the rotating rod (15) is rotatably connected with a fixed block four (16), the side close to the two sliding blocks (13) is fixedly connected with a spring two (17).
2. A fire door according to claim 1, wherein: The buffer assembly comprises a cylinder (6), the side away from the fixed block one (5) of the cylinder (6) is fixedly connected with an end cover (7), the side close to the fixed block one (5) of the end cover (7) is fixedly connected with a connecting rod (8), the side close to the end cover (7) of the connecting rod (8) is fixedly connected with a piston (9), the inner portion of the cylinder (6) close to the fixed block one (5) is fixedly connected with a fixed block two (10), the side close to the cylinder (6) of the end cover (7) is fixedly connected with a spring one (11), the end away from the end cover (7) of the cylinder (6) is fixedly connected on the side of the fixed block one (5).
3. A fire door according to claim 1, wherein: The side away from the baffle (4) of the steel plate (2) is fixedly connected with a sealing layer (18), the side away from the baffle (4) of the sealing layer (18) is fixedly connected with a heat insulation layer (19), the side away from the sealing layer (18) of the heat insulation layer (19) is fixedly connected with a reinforcing layer (20), the side away from the heat insulation layer (19) of the reinforcing layer (20) is fixedly connected with an inner core layer (21).
4. A fire door according to claim 1, wherein: The side of the steel plate (2) is mounted with a handle (23), the inner side of the door frame (1) away from the side of the handle (23) is fixedly connected with two hinges (22).
5. A fire door according to claim 1, wherein: The two sides of the baffle (4) are fixedly connected on the inner side top of the door frame (1), the bottom of the support plate (3) is in contact with the top of the steel plate (2).
6. A fire door according to claim 2, wherein: The connecting rod (8) is slidably connected in the inner portion of the fixed block two (10), the outer portion of the piston (9) is in contact with the cylinder (6).
7. A fire door according to claim 2, wherein: The inner portion of the spring two (17) is slidably connected with the outer portion of the connecting column (12), the end away from the end cover (7) of the spring one (11) is fixedly connected on the side of the fixed block one (5).
8. A fire door according to claim 3, wherein: The side away from the reinforcing layer (20) of the inner core layer (21) is fixedly connected on the steel plate (2), the other end of the fixed block four (16) is fixedly connected on the baffle (4).