Double-open fireproof door small in occupied space

Abstract

The utility model discloses a double-open fireproof door with small occupied space, which comprises a door frame, a plurality of groups of fixed rotating shafts are fixedly and symmetrically mounted on one side of the door frame, two groups of door leaves are jointly mounted at one ends of the plurality of groups of fixed rotating shafts, and a synchronizer comprises a fixed box fixedly mounted at the top of the door frame. By means of the arrangement of the synchronizer, when one set of door leaves is opened or closed, the two sets of first rotating rods, the two sets of driving wheels, the two sets of driven wheels and the second rotating rods are connected, the two sets of door leaves can be opened or closed, and therefore the two sets of door leaves can be opened or closed conveniently. The door leaves rotate to drive the upper portions of the fixed rotating shafts to rotate, drive one set of first rotating rods to rotate, indirectly drive the other set of first rotating rods to rotate and drive the other set of door leaves to rotate at the same time, the effect that when one set of door leaves is opened or closed, the other door leaf is synchronously driven to be opened or closed is achieved, and the door leaf opening and closing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of double-leaf fire doors, specifically to a double-leaf fire door that occupies little space. Background Technology

[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity, and thermal insulation for a certain period of time. They are fire-resistant partitions with a certain degree of fire resistance, installed in fire compartments, evacuation stairwells, vertical shafts, and other similar locations. In addition to the functions of ordinary doors, fire doors have the special function of preventing the spread of fire and smoke, and can stop or delay the spread of fire for a certain period of time to ensure the safe evacuation of personnel.

[0003] Existing double-leaf fire doors all use independent fixing and opening methods. Each time they need to be opened, the first set of door leaves must be opened first using the handle, then the second set of door leaves must be released from the fixing, and finally the second set of door leaves must be opened. When closing, the same method must be used to fix them. This makes the operation of opening and closing double-leaf fire doors too complicated and reduces the efficiency of fire door use.

[0004] According to the utility model disclosed in CN222376347U, a concealed fire door is proposed, including a door frame, a fire door body rotatably connected to the inner wall of the door frame, a sealing device provided on the inner wall of the door frame, a handle and fireproof glass provided on the outer wall of the fire door body, and a foot-operated opening device provided on the inner wall of the fire door body. The foot-operated opening device includes a pedal and a driven gear, and when a person steps on the pedal, it drives the driven gear to rotate. The outer wall of the driven gear is fixedly connected to one end of the handle.

[0005] The concealed fire door described above requires two fire door bodies to be opened separately. Each time the door is opened and closed, the operation of opening and closing the double fire door becomes too complicated, reducing the efficiency of the fire door. Therefore, we need to propose a double fire door that occupies less space. Utility Model Content

[0006] The purpose of this utility model is to provide a double-leaf fire door that occupies a small space. By using a synchronizer, when one set of door leaves is opened or closed, the rotation of the door leaves will drive the upper part of the fixed rotating shaft to rotate, which in turn drives one set of first rotating rods to rotate. The rotation of one set of first rotating rods drives one set of driving wheels, which in turn drives a second rotating rod to rotate. The rotation of the second rotating rod simultaneously drives another set of driven wheels to rotate, which in turn drives another set of first rotating rods to rotate, and simultaneously drives the other set of door leaves to rotate. This achieves the effect of simultaneously driving the other set of door leaves to open or close when one set of door leaves is opened or closed, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a double-leaf fire door with a small footprint, comprising a door frame, wherein several sets of fixed rotating shafts are fixedly and symmetrically installed on one side of the door frame, and two sets of door leaves are installed at one end of each set of fixed rotating shafts. A synchronizer is installed on the top of the door frame, the synchronizer comprising a fixed box fixedly installed on the top of the door frame, and a set of first rotating rods fixedly installed on the top of each of the two sets of fixed rotating shafts located on the upper layer. One end of each of the two sets of first rotating rods extends into the interior of the fixed box, and a set of driving wheels is fixedly installed at one end of each of the two sets of first rotating rods. A second rotating rod is rotatably installed on the inner side wall of the fixed box, and two sets of driven wheels are fixedly installed on the outer arc surface of the second rotating rod. The outer sides of the two sets of driving wheels are meshed with the outer sides of the two sets of driven wheels.

[0008] Preferably, the inner sidewall of the door frame is provided with a slot, and a sealing gasket is installed inside the slot. When the two sets of door leaves are closed, one side of the two sets of door leaves fits against one side of the sealing gasket.

[0009] Preferably, the door leaf includes a door panel, and a reinforcing frame is fixedly installed inside the door panel, the inner cavity of the reinforcing frame being filled with fireproof rock board.

[0010] Preferably, an automatic closer is fixedly installed on the front end of the door frame, and one end of the automatic closer is fixedly connected to the front end of a set of door leaves.

[0011] Preferably, the opposite sides of the two sets of door panels are in a complementary interlocking shape, and the opposite sides of the two sets of door panels are provided with seam sealing gaskets.

[0012] Preferably, a door lock is installed in the middle of one set of door panels. The door lock includes a through-type two-way handle. A rotating wheel is fitted on the outer arc surface of the handle inside the door panel. Two sets of moving rods are engaged with the outer side of the rotating wheel. A lock tongue is fixedly installed at one end of each set of moving rods.

[0013] Preferably, the two sets of latches extend to the upper and lower ends of the door leaf respectively, and when the door leaf is closed, one end of the two sets of latches is inserted into the interior of the door frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention utilizes a synchronizer to connect a fixed box, two sets of first rotating rods, two sets of driving wheels, two sets of driven wheels, and a second rotating rod. When one set of door panels is opened or closed, the rotation of the door panel drives the upper part of the fixed rotating shaft to rotate, which in turn drives one set of first rotating rods to rotate, indirectly driving the other set of first rotating rods to rotate. This, in turn, drives the other set of door panels to rotate, achieving the effect of simultaneously opening or closing the other set of door panels when one set of door panels is opened or closed, thus improving the efficiency of door opening and closing.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the sealing gasket installation structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the card slot installation structure of this utility model;

[0020] Figure 4 This is an exploded view of the synchronizer of this utility model;

[0021] Figure 5 This is an exploded view of the door leaf structure of this utility model;

[0022] Figure 6 This is an exploded view of the door lock structure of this utility model.

[0023] In the diagram: 1. Door frame; 2. Fixed pivot; 3. Slot; 4. Sealing gasket; 5. Automatic closer; 6. Door leaf; 61. Door panel; 62. Reinforcing frame; 63. Fireproof rock panel; 7. Door lock; 71. Handle; 72. Rotary wheel; 73. Moving rod; 74. Lock tongue; 8. Synchronizer; 81. Fixed box; 82. First rotating rod; 83. Drive wheel; 84. Second rotating rod; 85. Driven wheel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6This utility model provides a double-leaf fireproof door with a small footprint, including a door frame 1. Several sets of fixed rotating shafts 2 are fixedly and symmetrically installed on one side of the door frame 1. Two sets of door leaves 6 are installed at one end of the sets of fixed rotating shafts 2. A synchronizer 8 is installed on the top of the door frame 1. The synchronizer 8 includes a fixed box 81 fixedly installed on the top of the door frame 1. A set of first rotating rods 82 are fixedly installed on the top of the two sets of fixed rotating shafts 2 on the upper layer. One end of the two sets of first rotating rods 82 extends into the interior of the fixed box 81, and a set of driving wheels 83 are fixedly installed on one end of the two sets of first rotating rods 82. A second rotating rod 84 is rotatably installed on the inner side wall of the fixed box 81. Two sets of driven wheels 85 are fixedly installed on the outer arc surface of the second rotating rod 84. The outer sides of the two sets of driving wheels 83 are meshed with the outer sides of the two sets of driven wheels 85.

[0026] In use, via synchronizer 8, when one set of door leaves 6 is opened or closed, the rotation of door leaf 6 drives the upper part of the fixed rotating shaft 2 to rotate, simultaneously driving one set of first rotating rods 82 to rotate. The rotation of the first rotating rods 82 drives one set of driving wheels 83, which in turn drives a second rotating rod 84. The rotation of the second rotating rod 84 simultaneously drives another set of driven wheels 85, which in turn drives another set of driving wheels 83. The rotation of the other set of driving wheels 83 then drives another set of first rotating rods 82, simultaneously driving the other set of door leaves 6 to rotate. This achieves the effect of simultaneously opening or closing the other set of door leaves 6 when one set of door leaves 6 is opened or closed.

[0027] The inner side wall of the door frame 1 has a slot 3, and a sealing gasket 4 is installed inside the slot 3. When the two sets of door leaves 6 are closed, one side of the two sets of door leaves 6 is attached to one side of the sealing gasket 4. Through the connection between the door frame 1, the slot 3, the sealing gasket 4 and the door leaves 6, the door leaves 6 can achieve a sealing effect when closed.

[0028] The door leaf 6 includes a door panel 61, and a reinforcing frame 62 is fixedly installed inside the door panel 61. The inner cavity of the reinforcing frame 62 is filled with fireproof rock plate 63. The hardness and protective performance of the door panel 61 are improved by the reinforcing frame 62 and fireproof rock plate 63 installed inside the door panel 61.

[0029] An automatic closer 5 is fixedly installed on the front end of the door frame 1. One end of the automatic closer 5 is fixedly connected to the front end of a set of door leaves 6. The automatic closer 5 enables the door leaves 6 to close automatically.

[0030] The opposite sides of the two sets of door leaves 6 are in a complementary interlocking shape, and the opposite sides of the two sets of door leaves 6 are provided with sealing gaskets. Through the connection between the two sets of door leaves 6, the sealing performance of the two sets of door leaves 6 when closed is improved.

[0031] A door lock 7 is installed in the middle of one set of door leaves 6. The door lock 7 includes a through-type two-way handle 71. The handle 71 is located inside the door leaf 6 and the outer arc surface is fitted with a rotating wheel 72. The outer side of the rotating wheel 72 is engaged with two sets of moving rods 73. One end of the two sets of moving rods 73 is fixedly installed with a lock tongue 74. Through the connection relationship between the door leaf 6, handle 71, rotating wheel 72, moving rod 73 and lock tongue 74, the two-way door opening effect is achieved through the two-way handle 71. Rotating the handle 71 drives the rotating wheel 72 to rotate and simultaneously moves the two sets of moving rods 73, so that the movement of the two sets of moving rods 73 drives the movement of the lock tongue 74.

[0032] Two sets of latches 74 extend through the upper and lower ends of the door leaf 6 respectively. When the door leaf 6 is closed, one end of each set of latches 74 is inserted into the interior of the door frame 1. Through the connection between the latches 74 and the door frame 1, the door leaf 6 can be opened and closed.

[0033] In practical use: Under normal circumstances, when both sets of door leaves 6 are open, the automatic closing device 5 ensures that the door leaves 6 are fixed in place. Through the synchronizer 8, and utilizing the connection between the fixed box 81, two sets of first rotating rods 82, two sets of driving wheels 83, two sets of driven wheels 85, and the second rotating rod 84, when one set of door leaves 6 is opened or closed, the rotation of door leaf 6 will drive the upper part of the fixed rotating shaft 2 to rotate, simultaneously driving one set of first rotating rods 82 to rotate, indirectly driving the other set of first rotating rods 82 to rotate, and simultaneously driving the other set of door leaves 6 to rotate. This achieves the effect of simultaneously driving the other set of door leaves 6 to open or close when one set of door leaves 6 is opened or closed, improving the efficiency of opening and closing door leaves 6. In the event of a fire, the fire control system controls the automatic closing device 5 to close the door leaves 6.

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

Claims

1. A double-acting fire door having a small footprint, characterized by: The door frame (1) is fixedly installed with a plurality of groups of fixed rotating shafts (2) on one side, and the top of the door frame (1) is provided with a synchronizer (8). The synchronizer (8) comprises a fixed box (81) fixedly installed on the top of the door frame (1), a group of first rotating rods (82) are fixedly installed on the top of the two groups of fixed rotating shafts (2) on the upper layer, one end of the two groups of first rotating rods (82) penetrates into the inside of the fixed box (81), and one end of the two groups of first rotating rods (82) is fixedly installed with a group of driving wheels (83), the inside wall of the fixed box (81) is rotatably installed with a second rotating rod (84), the outer arc surface of the second rotating rod (84) is fixedly installed with two groups of driven wheels (85), and the outer sides of the two groups of driving wheels (83) are meshed and connected with the outer sides of the two groups of driven wheels (85).

2. The double fire door according to claim 1, wherein: The inner side wall of the door frame (1) is provided with a clamping groove (3), and the inside of the clamping groove (3) is installed with a sealing gasket (4), when the two groups of door leaves (6) are closed, one side of the two groups of door leaves (6) is attached to one side of the sealing gasket (4).

3. The double fire door according to claim 1, wherein: The door leaf (6) comprises a door panel (61), the inside of the door panel (61) is fixedly installed with a reinforcing frame (62), and the inner cavity of the reinforcing frame (62) is filled with a fireproof rock plate (63).

4. The double fire door according to claim 1, wherein: The front end of the door frame (1) is fixedly installed with an automatic closer (5), and one end of the automatic closer (5) is fixedly connected with the front end of one group of door leaves (6).

5. The double fire door according to claim 1, wherein: The opposite sides of the two groups of door leaves (6) are complementary and occlusively shaped, and the opposite sides of the two groups of door leaves (6) are provided with caulking pads.

6. The dual swing fire door of claim 1, wherein: The middle part of one group of door leaves (6) is installed with a door lock (7), the door lock (7) comprises a through-type bidirectional handle (71), the outer arc surface of the handle (71) located in the inside of the door leaf (6) is sleeved with a rotating wheel (72), the outer side of the rotating wheel (72) is meshed and connected with two groups of moving rods (73), and one end of the two groups of moving rods (73) is fixedly installed with a lock tongue (74).

7. The double fire door according to claim 6, wherein: The two groups of lock tongues (74) penetrate into the upper and lower ends of the door leaf, respectively, and one end of the two groups of lock tongues (74) is inserted into the inside of the door frame (1) when the door leaf (6) is closed.

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