Self-locking fireproof door

Abstract

The utility model belongs to the technical field of fireproof doors, and particularly relates to a self-locking fireproof door which comprises a door frame and a door body arranged in front of the door frame, a self-locking mechanism is arranged on one side of the door frame, and a smoke prevention mechanism is arranged on the back face of the door body. The self-locking mechanism comprises a baffle, a first groove, a thin plate, a first rotating shaft, a self-locking clamping plate, a clamping head, a first unlocking handle, a first spring mounting base, a second spring mounting base, a first spring, a second rotating shaft, a roller, a control rope, a second unlocking handle and a fixing block. According to the self-locking type fireproof door, through the self-locking device, when the door body is closed under the action of a door closer, one side of a clamping head can clamp one side of the door body to complete self-locking, unlocking structures are arranged on the two sides of the door body after self-locking to assist personnel in unlocking the door body after self-locking, one side of a smoke barrier can be inserted into the inner wall of a second groove through a smoke prevention mechanism, and therefore the smoke barrier can be prevented from being blocked. The two sides of the smoke baffle make close contact with the inner wall of the door frame and the baffle fixedly connected to the inner wall of the door frame, smoke generated during combustion is isolated, and personnel safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a self-locking fireproof door. Background Art

[0002] A fire door is a door that meets the requirements of fire resistance, stability, integrity and thermal insulation within a certain period of time. It is a fire-resistant partition with a certain fire resistance installed between fire compartments, evacuation stairwells, vertical shafts, etc. In addition to the functions of ordinary doors, fire doors can also prevent the spread of fire and smoke. They can prevent the spread of fire within a certain period of time and ensure the evacuation of personnel.

[0003] The existing self-locking fire doors have a high fire protection function, which can only prevent fire and are relatively simple. Moreover, as the fire continues to spread, the fire doors will still be damaged. They cannot reduce the spread of the fire and cannot reduce the temperature of people passing through the fire doors.

[0004] In the patent document with publication number CN207420380U, an automatic locking fire door is disclosed. Through the automatic locking mechanism, the fire door can be automatically locked before a fire occurs, thereby preventing escaping personnel from being affected by flames or smoke in the evacuation passage, protecting people's lives and safety. The fire-proof expansion member can enhance the sealing performance of the fire door and achieve a fire-proof effect.

[0005] However, the automatic locking fire door opens the self-locking device through a heat-sensitive device before a fire occurs. Therefore, the fire door cannot be opened after a fire occurs, which may cause danger to people who cannot pass through the fire door after a fire. Therefore, it is necessary to propose a self-locking fire door with a self-locking structure that can open on both sides of the fire door. Utility Model Content

[0006] The utility model aims to provide a self-locking fire door to solve the problem of self-locking of the fire door proposed in the above background technology.

[0007] To achieve the above objectives, the utility model provides the following technical solutions: a self-locking fireproof door, comprising a door frame and a door body arranged in front of the door frame, a self-locking mechanism is arranged on one side of the door frame, and a smoke-proof mechanism is arranged on the back of the door body.

[0008] The self-locking mechanism comprises a baffle, a groove 1, a thin plate, a rotating shaft 1, a self-locking card plate, a clamping head, an unlocking handle 1, a spring mounting seat 1, a spring mounting seat 2, a spring 1, a rotating shaft 2, a roller, a control rope, an unlocking handle 2 and a fixed block, wherein the baffle is fixedly connected to one side of the door frame, the groove 1 is arranged on the left side of the door frame, the thin plate is fixedly connected to the back side of the groove 1, the rotating shaft 1 is rotatably connected to the inner wall of the groove 1, the self-locking card plate is fixedly connected to the surface of the rotating shaft 1, the clamping head is fixedly connected to one side of the self-locking card plate, the unlocking handle 1 is fixedly connected to one side of the clamping head, the spring mounting seat 1 is fixedly connected to one side of the self-locking card plate, the spring mounting seat 2 is fixedly connected to the left side of the inner wall of the groove 1, the spring 1 is movably connected between the spring mounting seat 1 and the spring mounting seat 2, the rotating shaft 2 is rotatably connected to the inner wall of the groove 1, the roller is fixedly connected to the outer surface of the rotating shaft 2, the control rope is arranged inside the groove 1, the unlocking handle 2 is fixedly connected to one side of the control rope, and the fixed block is fixedly connected to one side of the self-locking card plate.

[0009] The smoke-proof mechanism includes a second groove, a smoke shield, a telescopic rod and a second spring. The second groove is opened on the back of the door body, the smoke shield is arranged on the back of the door body, the telescopic rod is fixedly connected to one side of the smoke shield, and the second spring is movably connected to the outside of the telescopic rod.

[0010] Preferably, a fireproof lock is fixedly connected to the front of the door body, a hinge is provided on one side of the door frame, three hinges are provided on one side of the hinged door frame, and a door closer is provided on one side of the door body.

[0011] Preferably, a groove is provided on the surface of the roller, and the groove cooperates with the control rope. The second rotating shaft is provided at the corner of the inner wall of the first groove. When the unlocking handle second is pulled, the control rope will be driven to slide on the surface of the roller. At this time, the rotation of the roller converts the sliding friction into rolling friction, which is convenient for personnel to operate.

[0012] Preferably, a fire-retardant sealing strip is provided in front of the baffle. When the temperature reaches the set temperature, the fire-retardant sealing strip will expand to prevent the fire from spreading further, isolate the smoke generated during combustion, and ensure the safety of personnel.

[0013] Preferably, two sides of the telescopic rod are respectively fixedly connected to the back of the door body and one side of the smoke baffle, and three pairs of the telescopic rod and the spring are arranged between the door body and the smoke baffle.

[0014] Preferably, the second inner wall of the groove cooperates with one end of the smoke baffle plate, and the one end of the smoke baffle plate is slidably connected to the second inner wall of the groove.

[0015] Preferably, the door frame is provided with a through hole on one side close to the groove, and the outer surface of the control rope passes through the through hole.

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

[0017] 1. The self-locking fire door can be closed by the door closer through the self-locking device. One side of the clamping head will clamp one side of the door body to complete the self-locking. After self-locking, unlocking structures are provided on both sides of the door body. The auxiliary personnel can unlock the door body after self-locking to ensure the safety of personnel.

[0018] 2. The self-locking fire door can insert one side of the smoke baffle into the inner wall of the groove through the smoke-proof mechanism. At this time, the two sides of the smoke baffle are in close contact with the inner wall of the door frame and the baffle fixedly connected to the inner wall of the door frame. A fire-retardant sealing strip is provided in front of the baffle to prevent the fire from spreading further, isolate the smoke generated during combustion, and ensure the safety of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the door frame structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the self-locking mechanism structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the back structure of the door body of the utility model;

[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0024] In the figure: 1. door frame; 2. door body; 3. fireproof lock; 4. hinge; 5. door closer; 101. baffle; 102. groove one; 103. thin plate; 104. rotating shaft one; 105. self-locking card plate; 106. card head; 107. unlocking handle one; 108. spring mounting seat one; 109. spring mounting seat two; 110. spring one; 111. rotating shaft two; 112. roller; 113. control rope; 114. unlocking handle two; 115. fixing block; 201. groove two; 202. smoke baffle; 203. telescopic rod; 204. spring two. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 5, the utility model provides a technical solution:

[0027] Embodiment 1:

[0028] A self-locking fireproof door comprises a door frame 1 and a door body 2 arranged in front of the door frame 1. A self-locking mechanism is arranged on one side of the door frame 1.

[0029] The self-locking mechanism includes a baffle 101, a groove 102, a thin plate 103, a rotating shaft 104, a self-locking card plate 105, a card head 106, an unlocking handle 107, a spring mounting seat 108, a spring mounting seat 2 109, a spring 110, a rotating shaft 2 111, a roller 112, a control rope 113, an unlocking handle 2 114 and a fixing block 115. The baffle 101 is fixedly connected to one side of the door frame 1, the groove 102 is opened on the left side of the door frame 1, and the thin plate 103 is fixedly connected to the groove 10 2, the rotating shaft 104 is rotatably connected to the inner wall of the groove 102, the self-locking card plate 105 is fixedly connected to the surface of the rotating shaft 104, the clamping head 106 is fixedly connected to one side of the self-locking card plate 105, the unlocking handle 107 is fixedly connected to one side of the clamping head 106, the spring mounting seat 108 is fixedly connected to one side of the self-locking card plate 105, the spring mounting seat 2 109 is fixedly connected to the left side of the inner wall of the groove 102, and the spring 110 is movably connected to the spring mounting seat 108 and the spring mounting seat 2 10 9, the second rotating shaft 111 is rotatably connected to the inner wall of the groove 102, the roller 112 is fixedly connected to the outer surface of the second rotating shaft 111, the surface of the roller 112 is provided with a groove, the groove cooperates with the control rope 113, the second rotating shaft 111 is provided at the corner of the inner wall of the groove 102, when the unlocking handle 114 is pulled, the control rope 113 will be driven to slide on the surface of the roller 112, at this time, the roller 112 rotates to convert the sliding friction into rolling friction, which is convenient for personnel to operate, and the control rope 113 is provided in the groove 102. 02, a through hole is opened on the side of the door frame 1 near the groove 102, and the outer surface of the control rope 113 passes through the through hole, the unlocking handle 114 is fixedly connected to one side of the control rope 113, and the fixing block 115 is fixedly connected to one side of the self-locking card plate 105. When someone is at the back of the door frame 1, the control rope 113 can be pulled to lift the card head 106 by pulling the unlocking handle 114, and the self-locking of the card head 106 to the door body 2 can also be opened. The self-locking mechanism can be opened on both sides to better ensure the safety of personnel.

[0030] Embodiment 2:

[0031] On the basis of the first embodiment, a smoke-proof mechanism is arranged on the back of the door body 2, and the smoke-proof mechanism includes a second groove 201, a smoke baffle 202, a telescopic rod 203 and a second spring 204. The second groove 201 is opened on the back of the door body 2, and the inner wall of the second groove 201 cooperates with one end of the smoke baffle 202, and one end of the smoke baffle 202 is slidably connected to the inner wall of the second groove 201. The smoke baffle 202 is arranged on the back of the door body 2, and the telescopic rod 203 is fixedly connected to one side of the smoke baffle 202. The two sides of the telescopic rod 203 are respectively fixedly connected to the back of the door body 2 and one side of the smoke baffle 202. Three pairs of retractable rods 203 and springs 204 are arranged between the door body 2 and the smoke baffle 202. The springs 204 are movably connected to the outside of the telescopic rod 203. One side of the smoke baffle 202 is inserted into the inner wall of the groove 201. At this time, the two sides of the smoke baffle 202 are in close contact with the inner wall of the door frame 1 and the baffle 101 fixedly connected to the inner wall of the door frame 1. A fire-retardant sealing strip is arranged in front of the baffle 101. When the temperature reaches the set temperature, the fire-retardant sealing strip will expand to prevent the fire from spreading further, isolate the smoke generated during combustion, and ensure the safety of personnel.

[0032] Embodiment three:

[0033] On the basis of Example 2, a fireproof lock 3 is fixedly connected to the front of the door body 2, a hinge 4 is arranged on one side of the door frame 1, three hinges 4 are arranged on one side of the door frame 1, and a door closer 5 is arranged on one side of the door body 2. When the door is opened, the door body drives the connecting rod to move, and the transmission gear rotates, driving the rack plunger to move to the right. In the process of the plunger moving to the right, the spring is compressed, and the hydraulic oil in the right chamber is also pressurized. The one-way valve ball on the left side of the plunger opens under the action of oil pressure, and the hydraulic oil in the right chamber flows to the left chamber through the one-way valve. When the door opening process is completed, since the spring is compressed during the opening process, the accumulated elastic potential energy is released, pushing the plunger to the left, driving the transmission gear and the door closer connecting rod to rotate, so that the door is closed, and after closing, the self-locking structure is cooperated to complete the self-locking after closing.

[0034] Working principle:

[0035] Firstly, by means of the set self-locking mechanism, when the door body 2 is closed under the action of the door closer 5, the edge of the door body 2 will squeeze one side of the clamping head 106, push the self-locking clamping plate 105 to compress the spring 110 until one side of the door body 2 is clamped by the clamping head 106; when the spring 110 is compressed, the self-locking clamping plate 105 will rebound to its initial position under the action of its restoring force; at this time, one side of the clamping head 106 will clamp one side of the door body 2, making it impossible to open it directly through the fireproof lock 3, thus completing the self-locking operation.

[0036] Furthermore, when the door body 2 is closed, one side of the smoke baffle 202 can be inserted into the inner wall of the groove 201 through the smoke prevention mechanism arranged on the back of the door body 2. At this time, the two sides of the smoke baffle 202 are respectively in close contact with the inner wall of the door frame 1 and the baffle 101 fixedly connected to the inner wall of the door frame 1. A fire-retardant sealing strip is arranged in front of the baffle 101. When the temperature reaches the set temperature, the fire-retardant sealing strip will expand to prevent the fire from spreading further, isolate the smoke generated during combustion, and ensure the safety of personnel.

[0037] Furthermore, when the door body 2 is closed, due to the self-locking mechanism, the door body 2 cannot be opened by directly opening the fire lock 3 under normal circumstances. At this time, an unlocking handle 107 and an unlocking handle 2 114 are provided on the self-locking mechanism. When someone is in front of the door frame 1, the self-locking of the door body 2 by the clamp 106 can be opened by turning the unlocking handle 107, and then the fire lock 3 can be opened to open the door body 2. When someone is behind the door frame 1, the control rope 113 can be pulled to lift the clamp 106 by pulling the unlocking handle 2 114, and the self-locking of the door body 2 by the clamp 106 can also be opened. The self-locking mechanism can be opened on both sides to better ensure the safety of personnel.

[0038] Furthermore, a rotating shaft 111 and a roller 112 are provided on one side of the control rope 113 to assist in pulling the control rope 113 to reduce friction and complete unlocking.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A self-locking fireproof door, comprising a door frame (1) and a door body (2) arranged in front of the door frame (1), characterized in that: A self-locking mechanism is provided on one side of the door frame (1), and a smoke-proof mechanism is provided on the back of the door body (2); The self-locking mechanism comprises a baffle (101), a groove (102), a thin plate (103), a rotating shaft (104), a self-locking card plate (105), a clamping head (106), an unlocking handle (107), a spring mounting seat (108), a spring mounting seat (109), a spring (110), a rotating shaft (111), a roller (112), a control rope (113), an unlocking handle (114) and a fixing block (115); the baffle (101) is fixedly connected to one side of the door frame (1); the groove (102) is provided on the left side of the door frame (1); the thin plate (103) is fixedly connected to the back side of the groove (102); the rotating shaft (104) is rotatably connected to the inner wall of the groove (102); the self-locking card plate (105) is fixedly connected to the surface of the rotating shaft (104); the clamping head (110) is fixedly connected to the inner wall of the groove (102); the self-locking card plate (105) is fixedly connected to the surface of the rotating shaft (104); the clamping head (111) is fixedly connected to the inner wall of the groove (104); the self-locking card plate (105) is fixedly connected to the surface of the rotating shaft (104); the clamping head (111) is fixedly connected to the inner wall of the groove (104); the self-locking card plate (105) is fixedly connected to the surface of the rotating shaft (104); the self-locking card plate (105) is fixedly connected to the inner wall of the rotating shaft ... 06) is fixedly connected to one side of the self-locking card plate (105), the unlocking handle 1 (107) is fixedly connected to one side of the card head (106), the spring mounting seat 1 (108) is fixedly connected to one side of the self-locking card plate (105), the spring mounting seat 2 (109) is fixedly connected to the left side of the inner wall of the groove 1 (102), the spring 1 (110) is movably connected between the spring mounting seat 1 (108) and the spring mounting seat 2 (109), the rotating shaft 2 (111) is rotatably connected to the inner wall of the groove 1 (102), the roller (112) is fixedly connected to the outer surface of the rotating shaft 2 (111), the control rope (113) is arranged inside the groove 1 (102), the unlocking handle 2 (114) is fixedly connected to one side of the control rope (113), and the fixed block (115) is fixedly connected to one side of the self-locking card plate (105); The smoke prevention mechanism comprises a second groove (201), a smoke shield (202), a telescopic rod (203) and a second spring (204); the second groove (201) is opened on the back of the door body (2); the smoke shield (202) is arranged on the back of the door body (2); the telescopic rod (203) is fixedly connected to one side of the smoke shield (202); and the second spring (204) is movably connected to the outside of the telescopic rod (203).

2. A self-locking fire door according to claim 1, characterized in that: A fireproof lock (3) is fixedly connected to the front of the door body (2), a hinge (4) is arranged on one side of the door frame (1), and a door closer (5) is arranged on one side of the door body (2).

3. A self-locking fire door according to claim 1, characterized in that: The surface of the roller (112) is provided with a groove, the groove cooperates with the control rope (113), and the second rotating shaft (111) is arranged at the inner wall corner of the first groove (102).

4. A self-locking fire door according to claim 1, characterized in that: A fire-retardant sealing strip is arranged in front of the baffle (101).

5. A self-locking fire door according to claim 1, characterized in that: The two sides of the telescopic rod (203) are respectively fixedly connected to the back of the door body (2) and one side of the smoke baffle (202), and three pairs of the telescopic rod (203) and the second spring (204) are arranged between the door body (2) and the smoke baffle (202).

6. A self-locking fire door according to claim 1, characterized in that: The inner wall of the second groove (201) cooperates with one end of the smoke baffle (202), and one end of the smoke baffle (202) is slidably connected to the inner wall of the second groove (201).

7. A self-locking fire door according to claim 1, characterized in that: The door frame (1) is provided with a through hole on one side close to the groove one (102), and the outer surface of the control rope (113) passes through the through hole.

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