Flame-retardant fireproof door

Abstract

The flame-retardant fireproof door comprises a door frame and a door plate, the door plate is connected into the door frame through a rotating shaft, rebounding devices are arranged on the two sides of the door frame in a protruding mode, each rebounding device comprises a rebounding plate and a plurality of springs, the rebounding plates are connected into the door frame through the springs, and the rebounding plates are connected into the door frame through the springs. When the spring is in a static state, the door plate is in a normally-closed mode. The door plate is connected into the door frame through the rotating shaft, the door plate can be pushed to be opened and can be pulled to be opened, meanwhile, the door plate can automatically restore to the normally-closed state after being opened in cooperation with the rebound plate, the spring, the track and the sliding block, and the flame-retardant effect can still be kept in the rapid crowd evacuation process.

Description

Technical Field

[0001] The utility model relates to the technical field of fire doors, in particular to a flame-retardant fire door. Background Art

[0002] Currently, building safety standards are becoming increasingly strict. As a key component of building safety, the design and performance of flame-retardant fire doors directly affect the evacuation efficiency and personnel safety of buildings in case of emergencies such as fires. Traditional fire doors use flame-retardant materials to resist the spread of fire, but there are still some problems in actual applications. The opening directions of fire doors are not unified, that is, some fire doors need to be pushed to open, while some need to be pulled to open, resulting in possible delays in escape time due to improper operation during emergency evacuation. Summary of the Utility Model

[0003] The utility model provides a flame-retardant fire door for the deficiencies in the prior art.

[0004] To solve the above technical problems, the utility model is solved by the following technical solutions: A flame-retardant fire door includes a door frame and a door panel. The door panel is connected in the door frame through a rotating shaft. Rebound devices are prominently arranged on both sides of the door frame. The rebound devices include rebound plates and a plurality of springs. The rebound plates are connected in the door frame through springs. When the springs are in a static state, the door panel is in a normally closed mode.

[0005] In the above solution, preferably, the rebound device includes tracks, the tracks are arranged in the door frame correspondingly, and sliders that are matched to slide on the tracks are arranged on the rebound plates.

[0006] In the above solution, preferably, the springs are arranged between the sliders and the tracks.

[0007] In the above solution, preferably, the rebound plates are inclined and abutted against the door panel.

[0008] In the above solution, preferably, the rotating shaft divides the door panel into a first part and a second part, and the rebound plate is abutted against the second part.

[0009] In the above solution, preferably, an annular area for adapting to the rotation of the first part is arranged in the door frame.

[0010] In the above solution, preferably, a lock is arranged on the door panel. The lock includes a handle and a lock tongue, and the lock tongue can be placed in a lock groove in the door frame.

[0011] In the above solution, preferably, two groups of handles are respectively arranged through both sides of the door panel.

[0012] The beneficial effects of the present utility model are as follows: The door panel is connected to the door frame through a rotating shaft, enabling the door panel to be pushed open and pulled open. At the same time, in cooperation with the resilient plate, spring, track, and slider, the door panel can automatically return to the normally closed state after being opened, and can still maintain the flame retardant effect during the process of quickly evacuating people. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the door closing of the present utility model.

[0014] Figure 2 It is a schematic structural diagram of the door opening of the present utility model.

[0015] Figure 3 It is a front view of the present utility model.

[0016] Figure 4 is Figure 3 A - A sectional view of

[0017] Figure 5 is Figure 4 an enlarged view at B of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further describes the present utility model in detail in conjunction with the drawings and specific embodiments: Refer to Figures 1-5 , a specific structure of a flame - retardant fire door includes a door frame 1 and a door panel 2. The door panel 2 is rotatably connected in the door frame 2, and rotating the door panel 2 can achieve opening or closing.

[0019] Generally, the material of a normally - closed fire door is mostly a flame - retardant material to achieve the flame - retardant effect when the fire door is closed, for flame retardancy after closing for evacuating people. However, for existing fire doors, due to installation problems, some fire doors need to be pushed open, while some need to be pulled open. During use, people may open the wrong direction when evacuating, wasting escape time.

[0020] Specifically, the door frame 1 is made of high - strength and high - temperature - resistant steel, with precise dimensions designed to ensure firm connection with the wall. The door panel 2 is composed of two layers of outer and inner steel plates sandwiching a flame - retardant material. The surfaces of the outer and inner steel plates are treated with anti - corrosion, and the flame - retardant material is filled in the middle. At the same time, the door panel 2 is installed in the door frame 1 through a rotating shaft 3, and the rotating shaft 3 is made of stainless steel material, ensuring stability during long - term rotation use.

[0021] Moreover, a rebound device is arranged between the door panel 2 and the door frame 1, and the rebound device is arranged to slightly protrude from the door frame 1. The rebound device includes a rebound plate 4, a spring 5, a slider 7 and a track 6. Specifically, the track 6 is fixedly arranged in the door frame 1, and the rebound plate 4 is slidably arranged in the track 6. Furthermore, a plurality of springs 5 ​​are arranged at the bottom of the rebound plate 4 and the track 6, and preferably, the rebound device is symmetrically arranged on both sides of the door panel 2. When the spring 5 is in a stationary state, the door panel 2 and the door frame 1 remain in a closed state.

[0022] Furthermore, the rotating shaft 3 divides the door panel 2 into a first part 11 and a second part 12, wherein the shorter side of the door panel 2 is the first part 11, and the longer side is the second part 12, wherein the first part 11 and the second part 12 both rotate around the rotating shaft 3, and the first part 11 is arranged in the annular area 8 in the door frame 1, and the rebound plate 4 is against the second part 12, so that the automatic rebound of the door panel 2 can be achieved.

[0023] The rebound plate 4 is tilted and set against the door panel 2. When the door panel 2 is rotated to open, the door panel 2 moves toward one group of rebound plates 4, and the rebound plates 4 overcome the springs 5 ​​and move inside the track 6. The other group of rebound plates 4 is set not to move. After the door panel 2 is released, the overcome springs 5 ​​remain closed under the action of pressure. During installation, the track 6 is first fixed to a predetermined position of the door frame 1, and then the slider 7 is installed into the track 6, and then the rebound plate 4 is connected to the slider 7 and fixed to the door frame 1 through the spring 5, ensuring that the rebound plate 4 applies a certain closing pressure to the door panel 2 without external force.

[0024] The fire door also includes a lock. The door panel 2 is provided with a lock. The lock includes a handle 9 and a lock tongue. The lock tongue is designed to be retractable. When the door is closed, the lock tongue automatically falls into the lock groove 10 in the door frame 1 to ensure the normal use of the door panel 2. At the same time, in conjunction with the design of the double-sided handle 9, the door can be operated from both inside and outside. The handle 9 and the lock tongue are mechanically linked to achieve the locking and unlocking functions of the door. In daily use, the user only needs to use the handle 9 normally. In an emergency, the evacuated crowd can directly push or pull the door panel 2 to open it, and it will automatically close with the help of the rebound device to achieve flame retardancy.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flame retardant fire door, comprising a door frame and a door panel, characterized in that: The door panel is connected to the door frame via a rotating shaft. Rebound devices are protrudingly provided on both sides of the door frame. The rebound device includes a rebound plate and a plurality of springs. The rebound plate is connected to the door frame via a spring. When the spring is in a stationary state, the door panel is in a normally closed mode.

2. A flame retardant fire door according to claim 1, characterized in that: The rebound device comprises a track, which is arranged in the door frame, and the rebound plate is provided with a sliding block which matches and slides on the track.

3. A flame retardant fire door according to claim 2, characterized in that: The spring is arranged between the slider and the track.

4. The flame retardant fire door according to claim 1, characterized in that: The rebound plate is tilted and abutted against the door plate.

5. The flame retardant fire door according to claim 1, characterized in that: The rotating shaft divides the door panel into a first part and a second part, and the rebound plate is disposed on the second part.

6. The flame retardant fire door according to claim 1, characterized in that: The door frame is provided with an annular area for adapting to the rotation of the first part.

7. The flame retardant fire door according to claim 1, characterized in that: The door panel is provided with a lock, which comprises a handle and a lock tongue, and the lock tongue can be placed in a lock groove in the door frame.

8. The flame retardant fire door according to claim 1, characterized in that: Two sets of handles are respectively arranged through both sides of the door panel.

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