Fireproof door

Abstract

The utility model aims to provide a fireproof door which comprises a door frame and a sealing assembly, an upper cross rod and a lower cross rod are arranged on the door frame, the sealing assembly comprises an induction piece, a clamping and locking piece, a top block and a sealing plate, the induction piece is arranged on the upper cross rod, the top block is arranged on the lower cross rod in a sliding mode, and the clamping and locking piece is arranged on the upper cross rod and the lower cross rod in a penetrating mode. One end of the clamping and locking piece is clamped with the sensing piece, the other end of the clamping and locking piece abuts against the ejector block, the ejector block is clamped with the sealing plate, the sealing plate slides on the door frame, and when the sensing piece is separated from the clamping and locking piece, the clamping and locking piece is made to be far away from the ejector block, so that the sealing plate slides out of the door frame to abut against the ground. In this way, the sensing part is installed at the upper end of the door frame to sense the air temperature when a fire occurs, so that the clamping and locking part drives the top block to be away from the sealing plate, and then the sealing plate can automatically slide out of the door frame to improve the leakproofness of the fireproof door.

Description

Technical Field

[0001] The utility model relates to the technical field of fire safety equipment, in particular to a fire door. Background Art

[0002] Fire doors play a crucial role in the event of a fire. With the continuous increase in the height and complexity of modern buildings, the performance and function requirements for fire doors are also increasing day by day, and the structure of traditional fire doors is too simple. For example, the existing fire door panel substrates are particle boards, moisture-proof boards or density boards, the surfaces are decorated with fire-proof boards, and then sealed with sealing strips to achieve fire-proof sealing.

[0003] However, the existing fire doors have the following deficiencies: there are inevitably gaps between the door panel and the ground, which easily leads to the penetration of smoke and toxic gases, affecting the safety of personnel. At the same time, due to the sealing problem, the heat insulation effect of the fire door will also be reduced. In view of this, the fire door of this application is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a fire door that automatically closes the door gap to improve airtightness.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A fire door, comprising:

[0007] A door frame, on which an upper cross bar and a lower cross bar are provided; and

[0008] A closing assembly, the closing assembly includes a sensing member, a locking member, a top block and a sealing plate, the sensing member is arranged on the upper cross bar, the top block is slidably arranged on the lower cross bar, the locking member passes through the upper cross bar and the lower cross bar, one end of the locking member is clamped with the sensing member, the other end of the locking member abuts against the top block, the top block is clamped with the sealing plate, and the sealing plate slides on the door frame;

[0009] When the sensing member is separated from the locking member, the locking member is far away from the top block, so that the sealing plate slides out of the door frame to abut against the ground.

[0010] Optionally, the sensing member includes a temperature-sensitive bead and a lock block, the lock block is slidably arranged on the upper cross bar, one end of the lock block abuts against the temperature-sensitive bead, and the other end of the lock block is clamped with the locking member.

[0011] Optionally, an upper sliding groove is formed on the upper cross bar, and the lock block slides in the upper sliding groove.

[0012] Optionally, the sensing member further includes a sensing spring located in the upper chute, and the sensing spring abuts against the locking block and one side wall in the upper chute respectively.

[0013] Optionally, the locking member includes a pull rod passing through the upper cross bar and the lower cross bar, and one end of the pull rod is clamped with the locking block.

[0014] Optionally, a clamping groove is formed at one end of the pull rod close to the locking block, and the clamping groove is clamped with the locking block.

[0015] Optionally, the locking member further includes a push block disposed at one end of the pull rod away from the locking block, and the push block is used to push the top block.

[0016] Optionally, a groove is formed at one end of the top block away from the push block, and the groove is clamped with the sealing plate.

[0017] Optionally, the sealing plate includes a stop block and a convex rod. The stop block is slidably disposed in the door frame, the convex rod is disposed on the stop block, and the convex rod is clamped with the top block.

[0018] Optionally, an arc-shaped groove is formed on the convex rod, and the arc-shaped groove is clamped with the groove.

[0019] Compared with the prior art, the present utility model has at least the following advantages:

[0020] The fire door of the present utility model installs a sensing member at the upper end of the door frame to sense the air temperature during a fire, thereby driving the top block away from the sealing plate through the locking member, and further enabling the sealing plate to automatically slide out of the door frame to improve the airtightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of a fire door according to an embodiment of the present utility model;

[0023] Figure 2 It is a partial schematic diagram of a part of the structure of a fire door according to an embodiment of the present utility model;

[0024] Figure 3 It is a partial schematic diagram of a part of the structure of a fire door according to an embodiment of the present utility model with the sealing plate extended;

[0025] Figure 4 Structural schematic diagram of the sensing element according to an embodiment of the present utility model;

[0026] Figure 5 is Figure 4 structural schematic diagram of A in;

[0027] Figure 6 Structural schematic diagram of the sealing plate according to an embodiment of the present utility model;

[0028] Figure 7 is Figure 6 structural schematic diagram of B in.

[0029] Explanation of reference numerals:

[0030] 1, fire door; 10, door frame; 20, closing assembly; 11, upper cross bar; 12, lower cross bar; 21, sensing element; 22, locking element; 23, top block; 24, sealing plate; 211, temperature sensing bead; 212, lock block; 213, sensing spring; 111, upper sliding groove; 1111, through hole; 112, sensing groove; 221, pull rod; 2211, clamping groove; 2121, semi-circular groove; 222, push block; 223, expanding spring; 121, lower sliding groove; 25, locking spring; 2221, beveled part; 231, groove; 241, stop block; 242, convex rod; 243, sealing spring; 2421, arc groove; 30, panel; 40, fireproof material. Detailed implementation manners

[0031] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings.

[0032] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0033] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0034] In the embodiments of the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0035] As Figures 1 to 7 shown, in one embodiment, a fire door 1 includes a door frame 10 and a closing assembly 20. The door frame 10 is provided with an upper cross bar 11 and a lower cross bar 12. The closing assembly 20 includes a sensing member 21, a locking member 22, a top block 23 and a sealing plate 24. The sensing member 21 is disposed on the upper cross bar 11, the top block 23 is slidably disposed on the lower cross bar 12, the locking member 22 is passed through the upper cross bar 11 and the lower cross bar 12. One end of the locking member 22 is clamped with the sensing member 21, the other end of the locking member 22 abuts against the top block 23, the top block 23 is clamped with the sealing plate 24, and the sealing plate 24 slides on the door frame 10. When the sensing member 21 disengages from the locking member 22, the locking member 22 moves away from the top block 23, so that the sealing plate 24 slides out of the door frame 10 to abut against the ground.

[0036] It should be noted that the upper crossbar 11 and the lower crossbar 12 are both horizontally arranged inside the doorframe 10. The upper crossbar 11 is located at the upper end of the doorframe 10, and the lower crossbar 12 is located at the lower end of the doorframe 10. They are in a parallel state. Further, the sensing member 21 is arranged on the upper crossbar 11. The sensing member 21 includes a temperature sensing bead 211, a lock block 212 and a sensing spring 213. The temperature sensing bead 211 is an element for sensing temperature. For example, the temperature sensing bead 211 is a temperature sensing glass ball on a fire hose nozzle. When the temperature sensing bead 211 senses that the surrounding environment temperature reaches a certain value (usually called the nominal operating temperature, and there are generally multiple levels of nominal operating temperature, commonly 57°, 68°, 79°, 93°, 141°, etc.), the liquid inside the temperature sensing bead 211 expands due to heat, causing the temperature sensing bead 211 to break. Further, an upper chute 111 is formed on the upper crossbar 11. The chute is a convex U-shaped structure, and a through hole 1111 is formed at one end of the upper chute 111 facing the locking member 22. The lock block 212 is slidably arranged on the upper crossbar 11. The lock block 212 is an L-shaped structure. One end of the lock block 212 closely adheres to the upper crossbar 11 and slides in the upper chute 111, and passes through the through hole 1111 to be engaged with the locking member 22. The vertically upward end of the lock block 212 then rests outside the upper chute 111. Further, an induction groove 112 is also formed on the upper crossbar 11. The notch direction of the induction groove 112 is perpendicular to the notch direction of the upper chute 111, and the induction groove 112 penetrates through both sides. The induction groove 112 is located on the side of the upper chute 111 away from the through hole 1111, and the induction groove 112 is close to the upper chute 111. The end of the lock block 212 away from the through hole 1111 rests outside the upper chute 111 and is located inside the induction groove 112. The temperature sensing bead 211 is located inside the induction groove 112 so that the vertically upward end of the lock block 212 abuts against the temperature sensing bead 211.

[0037] As Figures 2 to 5 shown, in one embodiment, the sensing member 21 further includes a sensing spring 213. The sensing spring 213 is located inside the upper chute 111, and the sensing spring 213 abuts against one side wall inside the upper chute 111 and the end of the lock block 212 away from the locking member 22 respectively.

[0038] It should be noted that since the upper sliding groove 111 is provided on the upper cross bar 11 and the locking block 212 is slidably provided on the upper cross bar 11, the induction spring 213 pushes the locking block 212 away from the inner side wall in the upper sliding groove 111. Further, the induction groove 112 is located on the side of the upper sliding groove 111 away from the perforation 1111, and the induction groove 112 is adjacent to the upper sliding groove 111, while the end of the locking block 212 away from the perforation 1111 is docked outside the upper sliding groove 111 and located in the induction groove 112. Thus, when the temperature sensing bead 211 is located between the end of the locking block 212 away from the perforation 1111 and the inner side wall away from the upper sliding groove 111 in the induction groove 112, the induction spring 213 will push the locking block 212 to continuously abut against the temperature sensing bead 211, and further make the locking block 212 and the inner side wall of the induction groove 112 jointly clamp the temperature sensing bead 211 to prevent the temperature sensing bead 211 from falling, and at the same time, make the induction spring 213 unable to push the locking block 212 away from the locking part 22, so that the locking block 212 remains engaged with the locking part 22.

[0039] As Figures 2 to 5 shown, in one embodiment, one end of the locking block 212 abuts against the temperature sensing bead 211, and the other end of the locking block 212 is engaged with the locking part 22.

[0040] It should be noted that the locking part 22 includes a pull rod 221, the pull rod 221 passes through the upper cross bar 11 and the lower cross bar 12, and one end of the pull rod 221 is engaged with the locking block 212. A clamping groove 2211 is formed at the end of the pull rod 221 close to the locking block 212, and a semi-circular groove 2121 is formed at the end of the locking block 212 close to the pull rod 221. When the semi-circular groove 2121 is engaged with the clamping groove 2211, the pull rod 221 cannot slide relative to the upper cross bar 11 and the lower cross bar 12, so that the pull rod 221 is fixed on the upper cross bar 11 and the lower cross bar 12.

[0041] When the temperature sensing bead 211 senses that the ambient temperature reaches a certain value, the liquid inside it expands due to heat and breaks, so that the side surface of the locking block 212 away from the pull rod 221 loses the pushing force, which will enable the induction spring 213 to push the locking block 212 close to the opposite inner side wall in the induction groove 112, and further enable the induction spring 213 to drive the locking block 212 away from the pull rod 221. Since the semi-circular groove 2121 on the locking block 212 is engaged with the clamping groove 2211 of the pull rod 221, the pull rod 221 cannot slide relative to the upper cross bar 11 and the lower cross bar 12. Thus, when the induction spring 213 drives the locking block 212 away from the pull rod 221, the locking block 212 drives the semi-circular groove 2121 away from the clamping groove 2211, and further enables the pull rod 221 to slide relative to the upper cross bar 11 and the lower cross bar 12.

[0042] As Figures 2 to 3 、 Figures 6 to 7As shown, in one embodiment, the latch member 22 further includes a push block 222 and a spreading spring 223. The push block 222 is disposed at an end of the pull rod 221 away from the lock block 212. The push block 222 is used to push against the top block 23, and the spreading spring 223 is used to push the push block 222 away from the lower cross bar 12.

[0043] It should be noted that the push block 222 has a U-shaped structure. Both ends of the push block 222 are slidably disposed on the lower cross bar 12, while the middle end of the push block 222 is located on a side of the lower cross bar 12 away from the upper cross bar 11. The end of the pull rod 221 away from the sensing member 21 passes through the lower cross bar 12 and is connected to the middle end of the push block 222, enabling the pull rod 221 to drive the push block 222 to perform lifting and sliding, and further enabling the push block 222 to drive both ends to slide relative to the lower cross bar 12. The spreading spring 223 is sleeved on the pull rod 221 and is located between the push block 222 and the lower cross bar 12, so that the spreading spring 223 pushes the push block 222 to slide away from the lower cross bar 12, and further enables the spreading spring 223 to drive the push block 222 away from the top block 23. When the pull rod 221 is pulled, the pull rod 221 drives the push block 222 to compress the spreading spring 223, so that the push block 222 pushes the top block 23 closer to the sealing plate 24.

[0044] As Figures 2 to 3 、 Figures 6 to 7 As shown, in one embodiment, a lower sliding groove 121 is formed in the lower cross bar 12. The top block 23 is slidably disposed in the lower sliding groove 121. The top block 23 has an L-shaped structure. The vertically upward end of the top block 23 abuts against the end of the push block 222, and the other end of the top block 23 is clamped with the sealing plate 24.

[0045] It should be noted that there are two lower sliding grooves 121, and the two lower sliding grooves 121 are located on both sides of the pushing block 222. There are also two top blocks 23. The two top blocks 23 are respectively located in the two lower sliding grooves 121, and the two top blocks 23 are both abutted against the two ends of the pushing block 222. The closing assembly 20 further includes two locking springs 25. The two locking springs 25 are respectively located in the two lower sliding grooves 121, and the locking springs 25 respectively push against an inner side wall of the lower sliding groove 121 away from the pushing block 222 and the top block 23. Since the lower sliding groove 121 is provided on the lower cross bar 12, the locking spring 25 can only drive the top block 23 to approach or move away from the pushing block 222, and the other end of the top block 23 is clamped with the sealing plate 24, so that the locking spring 25 drives the top block 23 to move away from or close to the sealing plate 24. Further, chamfered portions 2221 are respectively provided at both ends of the pushing block 222 close to the top block 23, and the inclined surfaces of the chamfered portions 2221 are abutted against the right-angle surfaces of the top block 23. When the pushing block 222 slides upward, the right-angle surfaces of the two top blocks 23 both slide along the chamfered portions 2221 at both ends of the pushing block 222 at the same time, so that the two top blocks 23 slowly approach the sealing plate 24, and further the end of the top block 23 away from the chamfered portion 2221 is clamped with the sealing plate 24. Further, a groove 231 is provided at one end of the top block 23 close to the sealing plate 24, so that the locking spring 25 drives the groove 231 on the top block 23 to approach or move away from the sealing plate 24.

[0046] As Figures 2 to 3 , Figures 6 to 7 shown, in an embodiment, the sealing plate 24 includes a stop block 241, two convex rods 242 and two sealing springs 243. The stop block is slidably arranged in the door frame 10. The two convex rods 242 are both arranged on the stop block, and the two convex rods 242 are respectively clamped with the top blocks 23 on both sides of the pushing block. The two sealing springs 243 are respectively sleeved on the two convex rods 242, and the two sealing springs 243 are both located between the stop block 241 and the lower cross bar 12.

[0047] It should be noted that side grooves are provided on both sides of the stopper 241. Both side grooves slide within the door frame 10. The stopper 241 is located on the side of the lower crossbar 12 away from the upper crossbar 11 and near the edge of the door frame 10, so that the stopper 241 can slide out of the door frame 10. Since the sealing spring 243 is located between the stopper 241 and the lower crossbar 12, the stopper 241 can slide out of the door frame 10 relative to the lower crossbar 12, and further the stopper 241 seals the gap between the door panel and the ground. Further, since there are two protruding rods 242, both protruding rods 242 are provided on the side surface of the stopper 241 facing the lower crossbar 12, and both protruding rods 242 slide on the lower crossbar 12. When the stopper 241 approaches the lower crossbar 12, the stopper 241 will drive the two protruding rods 242 to slide out from the side of the lower crossbar 12 away from the stopper 241, so that when the stopper 241 can slide relative to the door frame 10, it can also slide relative to the lower crossbar 12.

[0048] It should be noted that arc-shaped grooves 2421 are provided on the sides of the two protruding rods 242 facing the top block 23. When the stopper 241 approaches the lower crossbar 12, the stopper 241 drives the two protruding rods 242 to slide out from the side of the lower crossbar 12 away from the stopper 241. When the push block 222 drives the top block 23 to approach the protruding rod 242, the arc-shaped groove 2421 on the protruding rod 242 is engaged with the groove 231 on the top block 23, so that the sealing plate 24 cannot slide downward away from the lower crossbar 12, and further the stopper 241 cannot slide out of the door frame 10.

[0049] As Figure 1 shown, in one embodiment, the fire door 1 further includes a panel 30. The panel is used to close the door frame 10. The sensing member 21 is located at the upper end of the door frame 10, and a through hole is provided on the panel 30 corresponding to the temperature sensing bead 211. The sealing plate 24 is located at the lower end of the door frame 10.

[0050] It should be noted that when a fire occurs, since the hot air generated by the fire has a high temperature and a low density, it will rise naturally. The hot air will gather in the upper part of the space during the rising process, including the area above the door. As the hot air continues to rise and accumulate, the upper part of the door will receive more heat transfer from the hot air, so the temperature will rise faster and higher. The smoke generated by the fire will also rise with the hot air. The smoke carries a large amount of heat, and when the smoke flows above the door, it will transfer the heat to the upper part of the door. Thus, when the hot air enters the sensing groove 112 through the through hole, the temperature sensing bead 211 can more quickly sense the temperature during a fire, and then can quickly seal the gaps between the door panel and the ground respectively to isolate the spread of the fire and the penetration of the smoke. Thereby improving the sealing performance of the fire door 1.

[0051] As Figure 1As shown, in one embodiment, the fire door 1 further includes a fireproof material 40, which is filled in the door frame, and the closing assembly 20 is located within the filled fireproof material 40, so that the closing assembly 20 can prevent the sealing plate 24 from failing to pop out of the door frame 10 due to the high temperature generated during a fire, thereby improving the sealing performance of the fire door 1.

[0052] The above-described embodiments merely represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A fire door, characterized in that, Comprising: A door frame, on which an upper crossbar and a lower crossbar are provided; and A closing assembly, which includes a sensing member, a locking member, a top block and a sealing plate. The sensing member is arranged on the upper crossbar, the top block is slidably arranged on the lower crossbar, the locking member penetrates through the upper crossbar and the lower crossbar, one end of the locking member is clamped with the sensing member, the other end of the locking member abuts against the top block, the top block is clamped with the sealing plate, and the sealing plate slides on the door frame; When the sensing member is separated from the locking member, the locking member is made to move away from the top block, so that the sealing plate slides out from the door frame to abut against the ground.

2. The fire door according to claim 1, wherein The sensing member includes a temperature sensing bead and a locking block. The locking block is slidably arranged on the upper crossbar, one end of the locking block abuts against the temperature sensing bead, and the other end of the locking block is clamped with the locking member.

3. The fire door according to claim 2, characterized in that, An upper sliding groove is formed on the upper crossbar, and the locking block slides in the upper sliding groove.

4. The fire door according to claim 3, characterized in that, The sensing member further includes a sensing spring, which is located in the upper sliding groove, and the sensing spring abuts against the locking block and one side wall in the upper sliding groove respectively.

5. The fire door according to claim 4, characterized in that, The locking member includes a pull rod, the pull rod penetrates through the upper crossbar and the lower crossbar, and one end of the pull rod is clamped with the locking block.

6. The fire door according to claim 5, characterized in that, A clamping groove is formed at one end of the pull rod close to the locking block, and the clamping groove is clamped with the locking block.

7. The fire door according to claim 6, wherein The locking member further includes a push block, which is arranged at the end of the pull rod far from the locking block, and the push block is used to push the top block.

8. The fire door according to claim 7, characterized in that, A groove is formed at one end of the top block far from the push block, and the groove is clamped with the sealing plate.

9. The fire door according to claim 8, characterized in that, The sealing plate includes a stop block and a convex rod. The stop block is slidably arranged in the door frame, the convex rod is arranged on the stop block, and the convex rod is clamped with the top block.

10. The fire door according to claim 9, characterized in that, An arc-shaped groove is formed on the convex rod, and the arc-shaped groove is clamped with the groove.

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