Closed fireproof door with bidirectional locking function

Abstract

The utility model discloses a closed fireproof door with a bidirectional locking function, which belongs to the technical field of fireproof doors and comprises a door frame and a door body, the door frame is hinged with the door body through a damping hinge, a mounting plate is mounted on the surface of the door frame, two sides of one end of the door frame are fixedly connected with limiting plates, and the limiting plates are fixedly connected with the door frame. Wherein one set of limiting plates is located at the top end of the door frame, the other set of limiting plates is located at the bottom end of the door frame, notches are formed in the positions, corresponding to the surface of the door body, of the surfaces of the two sets of limiting plates, a closed structure is arranged on the outer surface of the door body, a transmission cavity and a moving cavity are formed in the door body, and the transmission cavity communicates with the moving cavity. And a rotating mechanism is installed in the transmission cavity, a screw rod is arranged at one end of the rotating mechanism, and locking structures are arranged at the two ends of the screw rod correspondingly, so that convenience is provided for opening of the fireproof door, and the situation that dense smoke disturbs escapers is avoided.

Description

Technical Field

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

[0002] Fire doors refer to doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. They are fireproof partitions with certain fire resistance, located between fire compartments, evacuation stairwells, vertical shafts, etc. They are specially used to isolate fire sources in housing buildings and play a huge role in firefighting work. Once a fire occurs, people can get a chance to escape through fire doors.

[0003] Existing fire doors can generally only be locked in one direction. One side of the fire door can be opened by pulling it open, and the other side can be opened by pushing it open. When there is an obstacle blocking one side of the fire door, it will cause inconvenience to open the fire door. At the same time, the thick smoke generated by the fire can easily escape from the gap, causing interference to the escapees.

[0004] According to the publication number: CN220059351U, a fire door is provided, including a door frame, a slot is provided on the front of the door frame, a rotating block is provided on the inner wall of the slot, a connecting slot is provided on the inner wall of the slot, a through slot is provided on the top of the rotating block, a plug rod is connected to the inner wall of the through slot, and a rotating cylinder is inserted on the outer edge of the plug rod. The fire door, through the coordinated use of the door frame and the slot, makes it easy to insert the plug rod by using the rotating block and the connecting slot, and then makes it easy to fix the rotating block, makes it easy to install the fire door body by using the rotating cylinder and the nut, and also makes it easy to disassemble when the door needs to be replaced, thereby improving the feasibility of the device, and through the coordinated use of the fireproof panel and the fireproof filler, the surface of the fireproof door body is insulated by using the foamed cement layer, thereby improving the heat insulation effect of the device, and thus facilitating the use of the device.

[0005] According to the fire door introduced above, it can only be locked in one direction. The fire door can be opened by pulling it open on one side and by pushing it open on the other side. When there is an obstacle blocking one side of the fire door, it will cause inconvenience to open the fire door. At the same time, the thick smoke generated by the fire can easily escape from the gap and interfere with the escapees. Therefore, we need to propose a closed fire door with a two-way locking function. Utility Model Content

[0006] The purpose of the utility model is to provide a closed fire door with a two-way locking function. Through the setting of a rotating mechanism, the rotating mechanism is rotated to drive the screw to rotate, and the screw drives the locking structure to move. Through the cooperation of the locking structure and two sets of limit plates, the opening method of the fire door can be changed, so that the fire door can be opened in two directions. Through the setting of the closed structure, the sealing between the door body and the door frame is increased, thereby providing convenience for the opening of the fire door and avoiding interference of thick smoke to escapees, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a closed fire door with a two-way locking function, comprising a door frame and a door body, the door frame and the door body being hingedly connected by a damping hinge, a mounting plate being installed on the surface of the door frame, and both sides of one end of the door frame are fixedly connected to limit plates, one group of the limit plates is located at the top end of the door frame, and the other group of the limit plates is located at the bottom end of the door frame, and slots are provided on the surfaces of the two groups of limit plates at positions corresponding to the surface of the door body, and a closed structure for increasing the airtightness of the fire door is provided on the outer surface of the door body, a transmission cavity and a moving cavity are provided inside the door body, the transmission cavity is connected to the moving cavity, a rotating mechanism is installed inside the transmission cavity, a screw is provided at one end of the rotating mechanism, and both ends of the screw are rotatably connected to the inner cavity of the moving cavity through a rotating shaft, and locking structures for locking are provided at both ends of the screw.

[0008] Preferably, the enclosed structure consists of a sealing strip and a metal frame, the sealing strip is located inside the metal frame, high temperature resistant glass fiber is filled between the sealing strip and the metal frame, and the inner wall of the metal frame is fixedly connected to the surface of the door body.

[0009] Preferably, the rotating mechanism includes a first bevel gear, which is located inside the transmission cavity, one end of the first bevel gear is fixedly connected to a connecting rod, the surface of the connecting rod is rotatably connected to the inner cavity of the transmission cavity through a rotating shaft, the other end of the connecting rod passes through the transmission cavity and is fixedly connected to a turntable, the outer surface of the first bevel gear is meshingly connected to the second bevel gear, and a transmission assembly is provided at the bottom end of the second bevel gear, and the inner cavity of the transmission assembly is plugged and fixed to the outer surface of the screw.

[0010] Preferably, the transmission assembly includes a first pulley whose top end is fixedly connected to the bottom end of the second bevel gear, the bottom end of the first pulley is fixedly connected to a support rod, the other end of the support rod is rotatably connected to the inner cavity of the transmission cavity through a rotating shaft, the first pulley is connected to the second pulley through a belt drive, a through hole is opened at the center of the second pulley, and the inner cavity of the through hole of the second pulley is plugged and fixed to the outer surface of the screw.

[0011] Preferably, the locking structure includes a movable seat, a threaded hole is provided on the surface of the movable seat, the inner cavity of the threaded hole is threadedly connected to the outer surface of the screw, the surface of the movable seat is slidably connected to the inner cavity of the movable cavity, one end of the movable seat is fixedly connected to a fixed rod, a through hole is provided on the surface of the fixed rod at a position corresponding to the inner side wall of the movable cavity, and the surface of the fixed rod is inserted and slidably connected to the inner cavity of the through hole of the movable cavity.

[0012] Preferably, four groups of fixing rods are provided, and the positions of the four groups of fixing rods are distributed in a rectangular shape on the surface of the moving seat.

[0013] Preferably, both ends of the movable seat are fixedly connected with sliders, a sliding groove is provided at a position of the slider surface corresponding to the inner wall of the movable cavity, and the slider surface is slidably connected with the inner cavity of the sliding groove.

[0014] Preferably, a through hole is opened on the surface of the door body, and a high-temperature resistant glass plate is arranged in the inner cavity of the through hole of the door body, and the high-temperature resistant glass plate is transparent.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model provides a closed fire door with a two-way locking function. Through the setting of a rotating mechanism, the rotating mechanism is rotated to drive the screw to rotate, and the screw drives the locking structure to move. Through the cooperation of the locking structure and two sets of limit plates, the opening method of the fire door can be changed, so that the fire door can be opened in two directions. Through the setting of the closed structure, the sealing between the door body and the door frame is increased, thereby providing convenience for the opening of the fire door and preventing thick smoke from interfering with escapees. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a structural schematic diagram of the utility model when the door body is opened;

[0019] Figure 3 It is a structural schematic diagram of a partial cross section of the door body of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the rotating mechanism of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the decomposition structure of the enclosed structure of the utility model.

[0022] In the figure: 1. door frame; 2. door body; 3. limit plate; 4. closed structure; 41. sealing strip; 42. metal frame; 5. transmission chamber; 6. moving chamber; 7. rotating mechanism; 71. first bevel gear; 72. connecting rod; 73. turntable; 74. second bevel gear; 75. transmission assembly; 751. first pulley; 752. support rod; 753. second pulley; 8. screw; 9. locking structure; 91. moving seat; 92. fixing rod; 10. slider; 11. high temperature resistant glass plate. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5 The utility model provides a technical solution: a closed fire door with a two-way locking function, comprising a door frame 1 and a door body 2, the door frame 1 and the door body 2 are hinged by a damping hinge, a mounting plate is installed on the surface of the door frame 1, and both sides of one end of the door frame 1 are fixedly connected to limit plates 3, one group of limit plates 3 is located at the top of the door frame 1, and the other group of limit plates 3 is located at the bottom of the door frame 1, and slots are provided at positions corresponding to the surfaces of the two groups of limit plates 3 and the surfaces of the door body 2, and a closed structure 4 for increasing the airtightness of the fire door is provided on the outer surface of the door body 2, a transmission cavity 5 and a moving cavity 6 are provided inside the door body 2, the transmission cavity 5 is connected with the moving cavity 6, a rotating mechanism 7 is installed inside the transmission cavity 5, a screw 8 is provided at one end of the rotating mechanism 7, and both ends of the screw 8 are rotatably connected with the inner cavity of the moving cavity 6 through a rotating shaft, and both ends of the screw 8 are provided with locking structures 9 for locking;

[0025] When an obstacle appears on one side of the door, the rotating mechanism 7 drives the screw rod 8 to rotate, so that the screw rod 8 drives the locking structures 9 at both ends to move. Through the cooperation of the locking structure 9 and the two sets of limit plates 3, the opening method of the fire door can be changed from pushing to pulling, so that the fire door can be opened smoothly. Through the setting of the sealing structure 4, the airtightness of the fire door after closing is increased to prevent thick smoke from escaping from the gap, thereby providing convenience for the opening of the fire door and preventing thick smoke from interfering with the escapees.

[0026] The sealing structure 4 is composed of a sealing strip 41 and a metal frame 42. The sealing strip 41 is located inside the metal frame 42. High-temperature resistant glass fiber is filled between the sealing strip 41 and the metal frame 42. The inner wall of the metal frame 42 is fixedly connected to the surface of the door body 2. The setting of the metal frame 42 increases the fire resistance of the sealing structure 4 and protects the sealing strip 41. The setting of the high-temperature resistant glass fiber blocks heat and reduces the interference of high temperature on the sealing strip 41. The sealing strip 41 increases the sealing of the door body 2 and the door frame 1 after closing. Through the cooperation of the sealing structure 4, the sealing effect of the fire door after closing is improved, and the problem of thick smoke escaping from the gap is solved.

[0027] The rotating mechanism 7 includes a first bevel gear 71, which is located inside the transmission chamber 5. One end of the first bevel gear 71 is fixedly connected to a connecting rod 72. The surface of the connecting rod 72 is rotatably connected to the inner cavity of the transmission chamber 5 through a rotating shaft. The other end of the connecting rod 72 passes through the transmission chamber 5 and is fixedly connected to a turntable 73. The outer surface of the first bevel gear 71 is meshingly connected to the second bevel gear 74. The bottom end of the second bevel gear 74 is provided with a transmission assembly 75. The inner cavity of the transmission assembly 75 is plugged and fixed with the outer surface of the screw 8. The rotating turntable 73 drives the first bevel gear 71 to rotate through the connecting rod 72. The first bevel gear 71 drives the second bevel gear 74 to rotate through the meshing connection, so that the second bevel gear 74 drives the screw 8 to rotate through the transmission assembly 75. Through the cooperation of the first bevel gear 71, the second bevel gear 74, the transmission assembly 75 and the turntable 73, convenience is provided for changing the opening direction of the fire door, and the time problem of adjusting the opening direction is solved.

[0028] The transmission assembly 75 includes a first pulley 751 whose top end is fixedly connected to the bottom end of the second bevel gear 74, and a support rod 752 is fixedly connected to the bottom end of the first pulley 751, and the other end of the support rod 752 is rotatably connected to the inner cavity of the transmission cavity 5 through a rotating shaft, and the first pulley 751 is connected to the second pulley 753 through a belt transmission, and a through hole is opened at the center of the second pulley 753, and the inner cavity of the through hole of the second pulley 753 is plugged and fixed to the outer surface of the screw 8, and the second bevel gear 74 drives the first pulley 751 to rotate, and the first pulley 751 drives the second pulley 753 to rotate through the belt, so that the second pulley 753 drives the screw 8 to rotate, and through the cooperation of the transmission assembly 75, the adjustment of the screw 8 is facilitated, and the problem of inconvenient rotation of the screw 8 is solved.

[0029] The locking structure 9 includes a movable seat 91, a threaded hole is provided on the surface of the movable seat 91, the inner cavity of the threaded hole is threadedly connected to the outer surface of the screw 8, the surface of the movable seat 91 is slidably connected to the inner cavity of the movable cavity 6, one end of the movable seat 91 is fixedly connected to a fixing rod 92, and a through hole is provided on the surface of the fixing rod 92 at a position corresponding to the inner side wall of the movable cavity 6, the surface of the fixing rod 92 is inserted and slid in the inner cavity of the through hole of the movable cavity 6, and the screw 8 drives the movable seats 91 at both ends to move through the threaded connection with the threaded hole, so that the movable seat 91 at the bottom drives the fixing rod 92 to move into the inner cavity of the movable cavity 6, and the movable seat 91 at the top drives the fixing rod 92 to penetrate the through hole of the movable cavity 6, so that the fixing rod 92 cooperates with the limit plate 3 to lock, and the opening mode of the fire door is changed from pushing to pulling. The opening mode is changed from pulling to pulling. Through the cooperation of the locking structure 9 and the screw 8, the two-way locking of the fire door is realized, so that the fire door can be opened in both directions, solving the problem that obstacles affect the opening of the fire door.

[0030] Four groups of fixing rods 92 are provided, and the positions of the four groups of fixing rods 92 are distributed in a rectangular shape on the surface of the movable seat 91. Through the provision of the fixing rods 92, the limiting effect of the fixing rods 92 on the limiting plate 3 is improved. Through the cooperation of the four groups of fixing rods 92, the stabilizing effect of the fixing rods 92 on the locking of the limiting plate 3 is achieved, and the problem of the locking function failing when one group of the fixing rods 92 is missing is solved.

[0031] Both ends of the moving seat 91 are fixedly connected with sliders 10, and a sliding groove is opened at a position on the surface of the slider 10 corresponding to the inner wall of the moving cavity 6. The surface of the slider 10 is slidably connected to the inner cavity of the sliding groove. Through the cooperation of the slider 10 and the sliding groove, the screw 8 is prevented from driving the moving seat 91 to rotate, so that the moving seat 91 can only move up and down on the surface of the screw 8, thereby improving the stability of the moving seat 91 when it moves and solving the problem of shaking of the moving seat 91 when it moves.

[0032] A through hole is provided on the surface of the door body 2, and a high-temperature resistant glass plate 11 is provided in the inner cavity of the through hole of the door body 2. The high-temperature resistant glass plate 11 is transparent. Through the setting of the high-temperature resistant glass plate 11, the escapee can observe the fire situation through the high-temperature resistant glass plate 11. At the same time, the escapee on the other side can observe the situation on the opposite side of the fire door through the high-temperature resistant glass plate 11, which buys time for the escapee's escape route.

[0033] When in use, when the other side of the fire door is blocked by an obstacle, the rotating turntable 73 drives the first bevel gear 71 to rotate through the connecting rod 72, and the first bevel gear 71 drives the second bevel gear 74 to rotate through the meshing connection, and the second bevel gear 74 drives the first pulley 751 at the bottom to rotate, and the first pulley 751 drives the second pulley 753 to rotate through the belt, so that the second pulley 753 drives the screw rod 8 to rotate, and the screw rod 8 drives the moving seats 91 at both ends to move through the threaded connection with the threaded hole, so that the moving seat 91 at the bottom drives the fixing rod 92 to move into the inner cavity of the moving cavity 6, and the moving seat 91 at the top drives the fixing rod 92 to penetrate the through hole of the moving cavity 6, so that the fixing rod 92 cooperates with the limit plate 3 to lock, and the opening mode of the fire door is changed from pushing to pulling. When the door body 2 is closed, the sealing strip 41, the metal frame 42 and the glass fiber are cooperated to increase the airtightness between the door body 2 and the door frame 1 after closing, thereby providing convenience for the opening of the fire door and preventing the thick smoke from interfering with the escapee.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A closed fire door with a two-way locking function, characterized in that: include: A door frame (1) and a door body (2), wherein the door frame (1) and the door body (2) are hingedly connected via a damping hinge; Limiting plates (3) are fixedly connected to both sides of one end of the door frame (1), wherein one group of the limiting plates (3) is located at the top end of the door frame (1), and the other group of the limiting plates (3) is located at the bottom end of the door frame (1), and slots are provided at positions corresponding to the surface of the door body (2) on the surfaces of the two groups of limiting plates (3), and a sealing structure (4) for increasing the airtightness of the fire door is provided on the outer surface of the door body (2); A transmission chamber (5) and a movable chamber (6) are provided inside the door body (2); the transmission chamber (5) is connected to the movable chamber (6); a rotating mechanism (7) is installed inside the transmission chamber (5); a screw (8) is provided at one end of the rotating mechanism (7); both ends of the screw (8) are rotatably connected to the inner chamber of the movable chamber (6) via a rotating shaft; and both ends of the screw (8) are provided with locking structures (9) for locking.

2. The closed fire door with a two-way locking function according to claim 1, characterized in that: The sealed structure (4) is composed of a sealing strip (41) and a metal frame (42); the sealing strip (41) is located inside the metal frame (42); high-temperature resistant glass fiber is filled between the sealing strip (41) and the metal frame (42); and the inner wall of the metal frame (42) is fixedly connected to the surface of the door body (2).

3. The closed fire door with a two-way locking function according to claim 1, characterized in that: The rotating mechanism (7) comprises a first bevel gear (71), the first bevel gear (71) is located inside the transmission cavity (5), one end of the first bevel gear (71) is fixedly connected to a connecting rod (72), the surface of the connecting rod (72) is rotatably connected to the inner cavity of the transmission cavity (5) via a rotating shaft, the other end of the connecting rod (72) passes through the transmission cavity (5) and is fixedly connected to a rotating disk (73), the outer surface of the first bevel gear (71) is meshingly connected to a second bevel gear (74), the bottom end of the second bevel gear (74) is provided with a transmission assembly (75), and the inner cavity of the transmission assembly (75) is plugged and fixed to the outer surface of the screw rod (8).

4. The closed fire door with a two-way locking function according to claim 3, characterized in that: The transmission assembly (75) includes a first pulley (751) whose top end is fixedly connected to the bottom end of the second bevel gear (74); the bottom end of the first pulley (751) is fixedly connected to a support rod (752); the other end of the support rod (752) is rotatably connected to the inner cavity of the transmission cavity (5) via a rotating shaft; the first pulley (751) is connected to the second pulley (753) via a belt transmission; a through hole is provided at the center of the second pulley (753); the inner cavity of the through hole of the second pulley (753) is plugged and fixed to the outer surface of the screw rod (8).

5. The closed fire door with a two-way locking function according to claim 1, characterized in that: The locking structure (9) comprises a movable seat (91), a threaded hole is provided on the surface of the movable seat (91), the inner cavity of the threaded hole is threadedly connected to the outer surface of the screw rod (8), the surface of the movable seat (91) is slidably connected to the inner cavity of the movable cavity (6), one end of the movable seat (91) is fixedly connected to a fixed rod (92), a through hole is provided on the surface of the fixed rod (92) at a position corresponding to the inner side wall of the movable cavity (6), and the surface of the fixed rod (92) is inserted and slidably connected to the inner cavity of the through hole of the movable cavity (6).

6. The closed fire door with a two-way locking function according to claim 5, characterized in that: Four groups of fixing rods (92) are provided, and the positions of the four groups of fixing rods (92) are distributed in a rectangular shape on the surface of the moving seat (91).

7. The closed fire door with a two-way locking function according to claim 5, characterized in that: Both ends of the movable seat (91) are fixedly connected with a slider (10), a slide groove is provided at a position on the surface of the slider (10) corresponding to the inner wall of the movable cavity (6), and the surface of the slider (10) is slidably connected with the inner cavity of the slide groove.

8. The closed fire door with a two-way locking function according to claim 1, characterized in that: A through hole is provided on the surface of the door body (2), and a high-temperature resistant glass plate (11) is provided in the inner cavity of the through hole of the door body (2), and the high-temperature resistant glass plate (11) is transparent.

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