Hidden fireproof door

Abstract

The utility model provides a hidden type fireproof door which comprises a door frame, the inner wall of the door frame is connected with a fireproof door body in a rotating mode, a sealing device is arranged on the inner wall of the door frame, a handle and fireproof glass are arranged on the outer wall of the fireproof door body, and a treading type door opening device is arranged on the inner wall of the fireproof door body. The treading type door opening device comprises a pedal and a driven gear, the driven gear is driven to rotate when a person treads the pedal, the outer wall of the driven gear is fixedly connected with one end of a handle, by treading the arranged pedal, a connecting rod is driven to move, a toothed plate is driven to move downwards, the driven gear is driven to rotate in the moving process of the toothed plate, and therefore the door is opened. And meanwhile, the handle fixedly connected with the driven gear is driven to rotate, so that the handle does not need to be manually opened by a person, and the situation that the person is scalded when the person holds the handle to open the fireproof door body in a fire disaster can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a hidden fireproof door. 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.

[0003] The existing hidden fire doors can refer to the Chinese utility model patent with authorization announcement number CN220890011U, which discloses a hidden fire door, "which is composed of a hidden door frame, a fire door, a door closer, a sealing mechanism, a protective mechanism and a pull ring mechanism. In this scheme, the sealing groove is provided for connecting the flame retardant sealing strip. The flame retardant sealing ring and the flame retardant sealing strip can improve the sealing performance of the fire door, prevent smoke from drilling out through the gap of the fire door, and isolate the smoke. The door closer is provided so that the fire door will automatically close after being opened. Pull the U-shaped pull rod, and the U-shaped pull rod is moved by the rotating rod, so that one end of the U-shaped pull rod moves from the T-shaped mounting groove to the outside of the fire door. The U-shaped pull rod is provided to facilitate pulling the fire door to rotate. When the door handle on the surface of the fire door is very hot, the fire door can be pulled by the U-shaped pull rod, which can solve the problem in the prior art that the fire door can be in an open state during a fire, causing smoke to enter the escape passage."

[0004] When the above-mentioned equipment is in use, when the door handle on the surface of the fire door is very hot, the fire door can be pulled through the U-shaped pull rod. However, when a fire occurs and the heat is transmitted to the fire door, the U-shaped pull rod will still be affected, causing the U-shaped pull rod to become hot, making it inconvenient for personnel to open the fire door. When the above-mentioned device is in use, there is a gap between the door edge and the door frame, causing smoke and dust to pass through the gap, reducing the fire and smoke prevention effect of the device. Utility Model Content

[0005] In order to solve the above problems, the present invention proposes a hidden fire door to more accurately solve the problems raised in the above background technology.

[0006] The utility model is realized by the following technical solutions:

[0007] The utility model provides a hidden fireproof door, comprising a door frame, the inner wall of the door frame is rotatably connected with a fireproof door body, the inner wall of the door frame is provided with a sealing device, the outer wall of the fireproof door body is provided with a handle and fireproof glass, and the inner wall of the fireproof door body is provided with a stepping door opening device;

[0008] The pedal-type door opening device includes a pedal and a driven gear, and when a person steps on the pedal, the driven gear is driven to rotate, and the outer wall of the driven gear is fixedly connected to one end of the handle. When the driven gear rotates, the handle is driven to rotate to achieve the purpose of opening the door;

[0009] The sealing device comprises a connecting block and a sealing plate, and when the fire door body is closed, the connecting block is squeezed to move and the sealing plate is driven to extend out from the inner wall of the door frame and enter the inner wall of the fire door body.

[0010] Furthermore, one end of the outer wall of the fire door body close to the top of the door frame is fixedly connected to a door closer by means of bolts, and one end of the door closer away from the fire door body is rotatably connected to the outer wall of the door frame.

[0011] Furthermore, the pedal-type door opening device also includes a connecting rod, the bottom of which is fixedly connected to the top of the pedal, a tooth plate is welded and fixed to the end of the connecting rod away from the pedal, and the outer wall of the tooth plate is slidingly connected to the inner wall of the fire door body, the inner wall of the tooth plate tooth block is meshed with a driven gear, and the outer wall of the driven gear is rotatably connected to the inner wall of the fire door body.

[0012] Furthermore, a spring is slidably sleeved on the outer wall of the connecting rod, one end of the spring is welded and fixed to the bottom of the tooth plate, and the other end is welded and fixed to the inner wall of the fire door body.

[0013] Furthermore, the sealing device also includes a damper, one end of which is welded and fixed to the bottom of the connecting block, the inner wall of the connecting block is rotatably connected to a connecting plate, the middle part of the connecting plate is rotatably connected to an axle rod, and both ends of the axle rod are fixedly connected to the inner wall of the door frame, and one end of the connecting plate away from the connecting block is rotatably connected to a sealing plate.

[0014] Furthermore, the outer wall of the sealing plate is slidably connected to the inner wall of the door frame, and a sealing groove is provided at a position corresponding to the inner wall of the fire door body and the sealing plate.

[0015] Furthermore, a contact sensor is provided at the bottom of the pedal-type door opening device, and the contact sensor is connected to an automatic door-pushing device via a cable. The automatic door-pushing device includes a mounting frame, and a motor is provided on the inner wall of the mounting frame. A screw rod is welded and fixed to the output shaft end of the motor, and a moving block is threadedly connected to the outer edge of the screw rod.

[0016] Furthermore, the outer wall of the moving block is slidably connected to the inner wall of the mounting frame, the inner wall of the moving block is rotatably connected to a support rod, and one end of the support rod away from the moving block is rotatably connected to a push plate.

[0017] The beneficial effects of the utility model: the utility model proposes a hidden fire door, which drives the connecting rod to move and drives the tooth plate to move downward by stepping on the pedal provided, and in the process of the tooth plate moving, drives the driven gear to rotate, and at the same time drives the handle fixedly connected to the driven gear to rotate, so that the handle can be opened without manual operation, and can prevent people from being scalded when holding the handle to open the fire door body in case of fire.

[0018] The utility model proposes a concealed fire door, which closes the fire door body and squeezes the connecting block during the closing process of the fire door body, so that the connecting block is forced to move the squeezing damper and drive the connecting plate to rotate around the shaft rod as the axis. During the rotation of the connecting plate, the sealing plate is driven to extend from the inner wall of the door frame and enter into a sealing groove provided on the side of the fire door body facing the inner wall of the door frame, thereby preventing smoke from entering from the gap at the connection between the fire door body and the door frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural diagram of the utility model;

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

[0021] Figure 3 This is a schematic diagram of the automatic sliding door of the utility model;

[0022] Figure 4 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0023] Figure 5 It is a schematic diagram of the door opening device of the utility model.

[0024] The reference numerals are as follows:

[0025] 1. Door frame; 2. Fire door body; 3. Handle; 4. Fireproof glass; 5. Door closer; 6. Pedal-type door opening device; 601. Pedal; 602. Connecting rod; 603. Tooth plate; 604. Spring; 605. Driven gear; 7. Contact sensor; 8. Automatic door push device; 801. Mounting frame; 802. Motor; 803. Screw rod; 804. Moving block; 805. Support rod; 806. Push plate; 9. Sealing device; 901. Damper; 902. Connecting block; 903. Connecting plate; 904. Shaft rod; 905. Sealing plate. DETAILED DESCRIPTION

[0026] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0027] Please refer to Figure 1 - Figure 5 The utility model proposes a hidden fire door, including a door frame 1, the inner wall of the door frame 1 is rotatably connected with a fire door body 2, the inner wall of the door frame 1 is provided with a sealing device 9, the outer wall of the fire door body 2 is provided with a handle 3 and a fireproof glass 4, the inner wall of the fire door body 2 is provided with a stepping door opening device 6, the stepping door opening device 6 includes a pedal 601 and a driven gear 605, and when a person steps on the pedal 601, the driven gear 605 is driven to rotate, the outer wall of the driven gear 605 is fixedly connected to one end of the handle 3, and when the driven gear 605 rotates, the handle 3 is driven to rotate to achieve the purpose of opening the door, the sealing device 9 includes a connecting block 902 and a sealing plate 905, and when the fire door body 2 is closed, the connecting block 902 is squeezed to move and at the same time, the sealing plate 905 is driven to extend from the inner wall of the door frame 1 and enter the inner wall of the fire door body 2.

[0028] The end of the outer wall of the fire door body 2 close to the top of the door frame 1 is fixedly connected to the door closer 5 by bolts, and the end of the door closer 5 away from the fire door body 2 is rotatably connected to the outer wall of the door frame 1, and the fire door body 2 is closed by using the provided door closer 5.

[0029] The pedal-type door opening device 6 also includes a connecting rod 602, the bottom of which is fixedly connected to the top of the pedal 601, a tooth plate 603 is welded and fixed to one end of the connecting rod 602 away from the pedal 601, and the outer wall of the tooth plate 603 is slidably connected to the inner wall of the fire door body 2, the inner wall of the tooth block of the tooth plate 603 is meshed with a driven gear 605, and the outer wall of the driven gear 605 is rotatably connected to the inner wall of the fire door body 2, and the outer wall of the connecting rod 602 is slidably sleeved with a spring 604, one end of the spring 604 is connected to the tooth plate The bottom of 603 is welded and fixed, and the other end is welded and fixed to the inner wall of the fire door body 2. Stepping on the pedal 601 drives the connecting rod 602 to move, and drives the tooth plate 603 to move downward. During the movement of the tooth plate 603, it drives the driven gear 605 to rotate, and at the same time drives the handle 3 fixedly connected to the driven gear 605 to rotate, so that the handle 3 can be opened manually without manual operation, which can prevent people from being scalded when holding the handle 3 to open the fire door body 2 in the event of a fire.

[0030] The sealing device 9 also includes a damper 901, one end of which is welded and fixed to the bottom of the connecting block 902, the inner wall of the connecting block 902 is rotatably connected to a connecting plate 903, the middle part of the connecting plate 903 is rotatably connected to a shaft 904, and both ends of the shaft 904 are fixedly connected to the inner wall of the door frame 1, the end of the connecting plate 903 away from the connecting block 902 is rotatably connected to a sealing plate 905, and the outer wall of the sealing plate 905 is slidably connected to the inner wall of the door frame 1, and the inner wall of the fire door body 2 and the corresponding position of the sealing plate 905 A sealing groove is provided, and by closing the fire door body 2, the connecting block 902 is squeezed during the closing process of the fire door body 2, so that the connecting block 902 is forced to move and squeeze the damper 901, and drive the connecting plate 903 to rotate around the shaft 904 as the axis. During the rotation of the connecting plate 903, the sealing plate 905 is driven to extend out from the inner wall of the door frame 1 and enter the sealing groove provided on the side of the fire door body 2 facing the inner wall of the door frame 1, which can prevent smoke from entering from the gap at the connection between the fire door body 2 and the door frame 1.

[0031] A contact sensor 7 is provided at the bottom of the pedal-type door opening device 6, and the contact sensor 7 is connected to an automatic door-pushing device 8 through a cable. The automatic door-pushing device 8 includes a mounting frame 801, and a motor 802 is provided on the inner wall of the mounting frame 801. A screw rod 803 is welded and fixed to the output shaft end of the motor 802. A moving block 804 is threadedly connected to the outer edge of the screw rod 803, and the outer wall of the moving block 804 is slidably connected to the inner wall of the mounting frame 801. The inner wall of the moving block 804 is rotatably connected to a support rod 805, and the support rod 805 is rotatably connected to the inner wall of the mounting frame 801. One end of the support rod 805 away from the moving block 804 is rotatably connected to the push plate 806. When the pedal 601 is stepped on, the pedal 601 squeezes the contact sensor 7, and the contact sensor 7 triggers the control motor 802 to work, driving the screw rod 803 to rotate, and at the same time drives the moving block 804 connected to the outer thread of the screw rod 803 to move, so that the support rod 805 rotatably connected to the inner wall of the moving block 804 moves, pushing the push plate 806 to approach the fire door body 2, so that the fire door body 2 can be automatically opened.

[0032] Working principle: when in use, by stepping on the pedal 601, the connecting rod 602 is driven to move, and the tooth plate 603 is driven to move downward. During the movement of the tooth plate 603, the driven gear 605 is driven to rotate, and at the same time, the handle 3 fixedly connected to the driven gear 605 is driven to rotate, so that the handle 3 can be opened without manual operation, which can prevent the situation where people are scalded when they hold the handle 3 to open the fire door body 2 in the event of a fire. By closing the fire door body 2, the connecting block 902 is squeezed during the closing process of the fire door body 2, so that the connecting block 902 is forced to move and squeeze the damper 901, and the connecting plate 903 is driven to rotate with the shaft 904 as the axis. During the rotation of the connecting plate 903, the sealing plate 905 is driven to extend from the inner wall of the door frame 1 and enter the sealing groove opened on the side of the fire door body 2 facing the inner wall of the door frame 1, which can prevent smoke from entering from the gap at the connection between the fire door body 2 and the door frame 1.

[0033] Of course, the present utility model may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present utility model.

Claims

1. A hidden fire door, characterized in that: It includes a door frame, the inner wall of which is rotatably connected to a fire door body, the inner wall of the door frame is provided with a sealing device, the outer wall of the fire door body is provided with a handle and a fireproof glass, and the inner wall of the fire door body is provided with a pedal-type door opening device; the pedal-type door opening device includes a pedal and a driven gear, and when a person steps on the pedal, the driven gear is driven to rotate, the outer wall of the driven gear is fixedly connected to one end of the handle, and when the driven gear rotates, the handle is driven to rotate to achieve the purpose of opening the door; the sealing device includes a connecting block and a sealing plate, and when the fire door body is closed, the connecting block is squeezed to move and the sealing plate is driven to extend from the inner wall of the door frame and enter the inner wall of the fire door body.

2. The hidden fire door according to claim 1, characterized in that: One end of the outer wall of the fire door body close to the top of the door frame is fixedly connected with a door closer by means of bolts, and one end of the door closer away from the fire door body is rotatably connected to the outer wall of the door frame.

3. The hidden fire door according to claim 1, characterized in that: The pedal-type door opening device also includes a connecting rod, the bottom of which is fixedly connected to the top of the pedal, a tooth plate is welded and fixed to the end of the connecting rod away from the pedal, and the outer wall of the tooth plate is slidingly connected to the inner wall of the fire door body, the inner wall of the tooth plate tooth block is meshed with a driven gear, and the outer wall of the driven gear is rotatably connected to the inner wall of the fire door body.

4. The hidden fire door according to claim 3, characterized in that: The outer wall of the connecting rod is slidably sleeved with a spring, one end of the spring is welded and fixed to the bottom of the tooth plate, and the other end is welded and fixed to the inner wall of the fire door body.

5. The concealed fire door according to claim 1, characterized in that: The sealing device also includes a damper, one end of which is welded and fixed to the bottom of the connecting block, the inner wall of the connecting block is rotatably connected to a connecting plate, the middle part of the connecting plate is rotatably connected to a shaft rod, and both ends of the shaft rod are fixedly connected to the inner wall of the door frame, and the end of the connecting plate away from the connecting block is rotatably connected to a sealing plate.

6. The hidden fire door according to claim 5, characterized in that: The outer wall of the sealing plate is slidably connected to the inner wall of the door frame, and a sealing groove is provided at a position corresponding to the sealing plate on the inner wall of the fireproof door body.

7. The concealed fire door according to claim 1, characterized in that: A contact sensor is arranged at the bottom of the pedal-type door opening device, and the contact sensor is connected to an automatic door-pushing device via a cable. The automatic door-pushing device includes a mounting frame, and a motor is arranged on the inner wall of the mounting frame. A screw rod is welded and fixed to the output shaft end of the motor, and a moving block is threadedly connected to the outer edge of the screw rod.

8. The concealed fire door according to claim 7, characterized in that: The outer wall of the moving block is slidably connected to the inner wall of the mounting frame, the inner wall of the moving block is rotatably connected to a support rod, and one end of the support rod away from the moving block is rotatably connected to a push plate.

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