CN217106735U - Environment-friendly fireproof door - Google Patents
Environment-friendly fireproof door Download PDFInfo
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- CN217106735U CN217106735U CN202220387342.3U CN202220387342U CN217106735U CN 217106735 U CN217106735 U CN 217106735U CN 202220387342 U CN202220387342 U CN 202220387342U CN 217106735 U CN217106735 U CN 217106735U
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Abstract
The embodiment of the utility model provides an environmental protection prevents fire door, through prevent fire door leaf include first door leaf and with the second door leaf that first door leaf set up side by side, the junction of first door leaf with the second door leaf is equipped with the limiting plate that is used for limiting the first door leaf position, the junction of second door leaf with the first door leaf is equipped with the recess that is used for holding the limiting plate; the groove and the limiting plate are both arranged on the fire receiving surface; the fire receiving surface and the back fire surface of the fireproof door leaf are respectively provided with a moulding line; the molding line surrounds the milling type groove and the routing groove, and the molding line protrudes out of the fireproof door leaf; the thickness of the middle part of the moulding line is lower than that of the two sides; the moulding line is made of flame-retardant wood, and flame-retardant paint is brushed outside the moulding line. Through the design of the limiting plate and the groove, the first door leaf and the second door leaf are closed more tightly; the design of borduring for prevent that fire door has the practicality, life is longer.
Description
Technical Field
The utility model relates to a prevent fire door technical field, especially relate to an environmental protection prevents fire door.
Background
A fire door is a door that can meet the requirements of fire stability, integrity and thermal insulation within a certain period of time. The fireproof door is arranged at a fireproof partition with certain fire resistance, such as a fireproof interval, an evacuation staircase, a vertical shaft, a power distribution machine room and the like. The fireproof door not only has the function of a common door, but also has the functions of preventing the fire from spreading and the smoke from diffusing, the fire is prevented from spreading within a certain time, and the rescue and evacuation time of people is prolonged.
The environment-friendly fireproof door is a door with certain fire resistance, which is formed by manufacturing a door frame, a door leaf framework and a door leaf panel by using steel materials, filling materials in a door leaf, filling fireproof heat insulation materials which are nontoxic and harmless to a human body, and matching fireproof hardware fittings.
In the existing market, a fireproof door does not have attractive value, the doors are not closed tightly, and toxic gases such as dense smoke and the like spread into the doors through gaps, so that the personnel in a safe area are injured, and hidden dangers are increased.
SUMMERY OF THE UTILITY MODEL
In view of the above, embodiments of the present invention are provided to provide an environmentally friendly fire door that overcomes or at least partially solves the above problems.
In order to solve the problems, the embodiment of the utility model discloses an environment-friendly fireproof door, which comprises a fireproof door frame and a fireproof door leaf;
the inner side of the fireproof door frame is connected with the fireproof door leaf through a fireproof hinge, milling grooves are respectively formed in the upper portion and the lower portion of the fireproof door leaf, and a milling groove is formed in the middle of the fireproof door leaf; the fireproof door leaf comprises a fire receiving surface and a back fire surface, and the fire receiving surface is opposite to the back fire surface;
the fireproof door leaf comprises a first door leaf and a second door leaf arranged side by side with the first door leaf, a limiting plate used for limiting the position of the first door leaf is arranged at the joint of the first door leaf and the second door leaf, and a groove used for containing the limiting plate is arranged at the joint of the second door leaf and the first door leaf; the groove and the limiting plate are both arranged on the fire receiving surface;
the fire receiving surface and the back fire surface of the fireproof door leaf are respectively provided with a moulding line; the molding line surrounds the milling type groove and the routing groove, and the molding line protrudes out of the fireproof door leaf; the thickness of the middle part of the moulding line is lower than that of the two sides; the moulding line is made of flame-retardant wood, and flame-retardant paint is brushed outside the moulding line;
and a sealing groove for accommodating a fireproof expansion sealing element is arranged on the side wall of the connection between the first door leaf and the second door leaf.
Preferably, a first edge covering is arranged at the joint of the first door leaf and the second door leaf, and a second edge covering is arranged at the joint of the second door leaf and the first door leaf.
Preferably, the fire expansion seal is detachably connected to the first door leaf.
Preferably, the fireproof door leaf and the moulding line are connected through fireproof glue.
Preferably, the fireproof door leaf comprises a first medium density fiberboard, a first fireproof board, a fireproof door core board, a second fireproof board and a second medium density fiberboard which are arranged in sequence; the first medium density fiberboard is arranged on the fire receiving surface, and the second medium density fiberboard is arranged on the back fire surface;
the fireproof door core plate is provided with at least one honeycomb hole, and fireproof materials are filled in the honeycomb hole.
Preferably, the limiting plate is formed by extending the first medium density fiberboard and the first fireproof plate.
Preferably, the fire door frame is made of metal.
Preferably, a framework is arranged inside the fireproof door leaf; the skeleton is made of flame-retardant wood.
Preferably, the fireproof hinge comprises a first hinge, a second hinge and a third hinge which are arranged from top to bottom in sequence.
The method specifically comprises the following advantages:
in the embodiment of the application, through the matching of a fireproof door frame and a fireproof door leaf, the inner side of the fireproof door frame is connected with the fireproof door leaf through a fireproof hinge, milling grooves are respectively arranged at the upper part and the lower part of the fireproof door leaf, and a milling groove is arranged in the middle of the fireproof door leaf; the fireproof door leaf comprises a fire receiving surface and a back fire surface, and the fire receiving surface is opposite to the back fire surface; the fireproof door leaf comprises a first door leaf and a second door leaf arranged side by side with the first door leaf, a limiting plate used for limiting the position of the first door leaf is arranged at the joint of the first door leaf and the second door leaf, and a groove used for containing the limiting plate is arranged at the joint of the second door leaf and the first door leaf; the groove and the limiting plate are both arranged on the fire receiving surface; the fire receiving surface and the back fire surface of the fireproof door leaf are respectively provided with a moulding line; the molding line surrounds the milling type groove and the routing groove, and the molding line protrudes out of the fireproof door leaf; the thickness of the middle part of the moulding line is lower than that of the two sides; the moulding line is made of flame-retardant wood, and flame-retardant paint is brushed outside the moulding line; and a sealing groove for accommodating a fireproof expansion sealing element is arranged on the side wall of the connection between the first door leaf and the second door leaf. Through the design of the limiting plate and the groove, the first door leaf and the second door leaf are closed more tightly; the design of borduring for prevent that fire door has the practicality, life is longer.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the present application will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Figure 1 is a schematic view of an environmentally friendly fire rated door provided in an embodiment of the present application;
figure 2 is a cross-sectional view of an environmentally friendly fire rated door as provided in one embodiment of the present application;
figure 3 is a partial enlarged view of an environmental protection fire door that an embodiment of this application provides.
1. A fireproof door leaf; 2. a fireproof door frame; 3. a framework; 4. a modeling line; 5. routing; 6. a fireproof lock; 7. milling a groove; 8. a fire-proof hinge; 9. metal wrapping; 10. a medium density fiberboard; 11. a fire-proof plate; 12. a fire door core panel; 13. a fire resistant intumescent seal; 14. first edge covering; 15. second wrapping; 16. and (3) a steel plate.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 3, showing the utility model discloses an environmental protection prevents fire door embodiment's structural schematic diagram, specifically can include following structure: the inner side of the fireproof door frame 2 is connected with the fireproof door leaf 1 through a fireproof hinge 8, the upper part and the lower part of the fireproof door leaf 1 are respectively provided with a milling groove 7, and the middle part of the fireproof door leaf 1 is provided with a milling groove; the fireproof door leaf 1 comprises a fire receiving surface and a back fire surface, and the fire receiving surface is opposite to the back fire surface;
the fireproof door leaf 1 comprises a first door leaf and a second door leaf arranged side by side with the first door leaf, a limiting plate used for limiting the position of the first door leaf is arranged at the joint of the first door leaf and the second door leaf, and a groove used for containing the limiting plate is arranged at the joint of the second door leaf and the first door leaf; the groove and the limiting plate are both arranged on the fire receiving surface; the fire receiving surface and the back fire surface of the fireproof door leaf 1 are respectively provided with a moulding line 4; the molding line 4 surrounds the milling type groove 7 and the routing groove, and the molding line 4 protrudes out of the fireproof door leaf 1; the thickness of the middle part of the moulding line 4 is lower than that of the two sides; the moulding line 4 is made of flame-retardant wood, and flame-retardant paint is brushed outside the moulding line 4; and a sealing groove for accommodating a fireproof expansion sealing piece 13 is arranged on the side wall of the connection between the first door leaf and the second door leaf.
In the embodiment of the application, through the matching of the fireproof door frame 2 and the fireproof door leaf 1, the inner side of the fireproof door frame 2 is connected with the fireproof door leaf 1 through a fireproof hinge 8, milling grooves 7 are respectively arranged at the upper part and the lower part of the fireproof door leaf 1, and a milling groove is arranged in the middle of the fireproof door leaf 1; the fireproof door leaf 1 comprises a fire receiving surface and a back fire surface, and the fire receiving surface is opposite to the back fire surface; the fireproof door leaf 1 comprises a first door leaf and a second door leaf arranged side by side with the first door leaf, a limiting plate used for limiting the position of the first door leaf is arranged at the joint of the first door leaf and the second door leaf, and a groove used for containing the limiting plate is arranged at the joint of the second door leaf and the first door leaf; the groove and the limiting plate are both arranged on the fire receiving surface; the fire receiving surface and the back fire surface of the fireproof door leaf 1 are respectively provided with a moulding line 4; the molding line 4 surrounds the milling type groove 7 and the routing groove, and the molding line 4 protrudes out of the fireproof door leaf 1; the thickness of the middle part of the moulding line 4 is lower than that of the two sides; the moulding line 4 is made of flame-retardant wood, and flame-retardant paint is brushed outside the moulding line 4; and a sealing groove for accommodating a fireproof expansion sealing piece 13 is arranged on the side wall of the connection between the first door leaf and the second door leaf. Through the design of the limiting plate and the groove, the first door leaf and the second door leaf are closed more tightly; the design of borduring for prevent that fire door has the practicality, life is longer.
Next, an environmental protection fire door in the present exemplary embodiment will be further described.
Referring to fig. 1, the structural schematic diagram that an environmental protection prevents fire door that this application embodiment provided is shown, specific following structure, fire prevention door frame 2 is connected through fire prevention hinge 8 fire prevention door leaf 1, specifically, fire prevention door frame 2 passes through hinge swing joint fire prevention door leaf 1, hinge also are called the hinge for connect the object, make the object do relative pivoted mechanical device, one side of fire prevention door frame 2 with hinge connection is passed through to one side of fire prevention door leaf 1, makes fire prevention door leaf 1 follow 2 one side of fire prevention door frame is rotated.
In the embodiment of the present application, the fireproof hinge 8 includes a first hinge, a second hinge and a third hinge that are sequentially arranged; the first hinge and the second hinge are separated by 300mm, and the second hinge and the third hinge are separated by 1590 mm.
In the embodiment of the application, the peripheral side wall of the fireproof door frame 2 is provided with a groove for accommodating the fireproof expansion sealing element 13; the inside first magnet that is equipped with of fire prevention inflation sealing member 13, the recess bottom be equipped with first magnetic stripe matched with second magnet.
In a specific embodiment, the first magnetic strip and the second magnetic strip are attracted so that the groove can be more tightly connected with the fire-resistant intumescent seal 13.
In the embodiment of the application, the fireproof door leaf 1 comprises a first door leaf and a second door leaf arranged side by side with the first door leaf, a limiting plate for limiting the position of the first door leaf is arranged at the joint of the first door leaf and the second door leaf, and a groove for accommodating the limiting plate is arranged at the joint of the second door leaf and the first door leaf; the groove and the limiting plate are both arranged on the fire receiving surface.
As an example, the limit plate is formed by extending the first medium density fiberboard and the first fireproof plate 11; the limiting plate is provided with a sealing groove in the direction close to the back fire surface, and the sealing groove is arranged on the framework 3 and is specifically shown in fig. 3.
As an example, the side wall of the connection between the first door leaf and the second door leaf is provided with a sealing groove for accommodating a fireproof expansion seal 13, the inner side wall of the fireproof door frame 2 is provided with the fireproof expansion seal 13, and specifically, the fireproof expansion seal 13 surrounds the inner side of the fireproof door frame 2 for one circle. The sealing groove is an annular groove with an opening at the top end, and particularly, the sealing groove is an inward-concave annular groove. When a fire disaster happens, the fireproof expansion sealing piece 13 is heated and expanded, and gas generated by the fire disaster is separated at the gap between the fireproof door frame 2 and the fireproof door leaf 1, so that toxic gas is prevented from entering a room.
In this application embodiment, 2 inboards of fire prevention door frame are connected through fire prevention hinge 8 fire prevention door leaf 1, 1 upper portion of fire prevention door leaf and lower part are equipped with respectively and mill type groove 7, 1 middle part of fire prevention door leaf is equipped with gong groove.
As an example, the fireproof door leaf 1 is provided with a milling type groove 7, a milling type groove and a milling type groove 7 from top to bottom in sequence, the milling type groove 7 and the milling type groove are both rectangular, and the milling type groove 7 and the milling type groove are aligned on the fireproof door leaf 1. The both sides of fire door leaf 1 are the symmetrical design, all are equipped with and mill type groove 7 and gong groove.
It should be noted that the milling-type groove 7 is a process manufactured by a milling machine, and the milling machine mainly refers to a machine tool for processing various surfaces of a workpiece by using a milling cutter. The milling machine is a machine tool for milling a workpiece by using a milling cutter. The milling machine can mill planes, grooves, gear teeth, threads and spline shafts, can also process complex molded surfaces, has higher efficiency than a planer, and is widely applied to mechanical manufacturing and repairing departments.
Note that the routing is a process of manufacturing a gong by a crane, a gong, or the like, and is generally used for a door panel.
In the embodiment of the application, the two sides of the fireproof door leaf 1 are respectively provided with a moulding line 4; the molding line 4 surrounds the milling type groove 7 and the routing groove, and the molding line 4 protrudes out of the fireproof door leaf 1; the thickness of the middle part of the moulding line 4 is lower than that of the two sides; the moulding line 4 is made of flame-retardant wood, and flame-retardant paint is brushed outside the moulding line 4. The fireproof door leaf 1 is connected with the moulding line 4 through fireproof glue.
As an example, the molding line 4 makes the shape of the fire door more beautiful, the molding line 4 is a molding line 4 with two protruding sides and a concave middle, the thickness of the molding line 4 near the milling groove 7 and the routing groove is smaller than the thickness of the molding line 4 far from the milling groove 7 and the routing groove, and a protrusion is further arranged on the molding line 4 far from the milling groove 7 and the routing groove.
In a specific embodiment, the molding line 4 is a flexible line made of a compliant plate, and the bottom of the molding line 43 is coated with a fireproof glue.
In the embodiment of the present application, a first edge 14 is disposed at a connection position of the first door leaf and the second door leaf. Specifically, the first hem 14 is a 1mm stainless steel plate 16. And a second wrapping 15 is arranged at the joint of the second door leaf and the first door leaf, and the second wrapping 15 is a stainless steel plate 16 with the thickness of 1 mm. And metal binding edges 9 are arranged at the joints of the first door leaf and the second door leaf and the fireproof door frame 2.
As an example, the fireproof door frame 2 is also provided with a fireproof expansion sealing member 13 on the inner side, and the fireproof expansion sealing member 13 may be made of silica gel.
In the embodiment of the application, the fireproof door frame 2 is made of metal, and the fireproof door frame 2 is made of 1.2mm cold-rolled hot-galvanized steel plate.
As an example, the fire door leaf 1 includes a medium density fiberboard 10, a fire prevention board 11, and a fire door core board 12; the medium density fiberboard 10 comprises a first medium density fiberboard and a second medium density fiberboard; the flame retardant panel 11 includes a first flame retardant panel 11 and a second flame retardant panel 11. The thickness of the fireproof plate 11 is 5 mm.
As an example, the fire door leaf 1 includes a first medium density fiberboard, a first fire-proof board 11, a fire door core board 12, a second fire-proof board 11 and a second medium density fiberboard arranged in sequence; the first medium density fiberboard is arranged on the fire receiving surface, and the second medium density fiberboard is arranged on the back fire surface; the fireproof door core plate 12 is provided with at least one honeycomb hole, and fireproof materials are filled in the honeycomb hole.
In a specific embodiment, the first middle fiber board is composed of two layers of middle fiber board boards, the two layers of middle fiber board boards are stacked on the fire-receiving surface of the fireproof door leaf 1, the second middle fiber board is arranged on the back of the fireproof door leaf 1, and the first middle fiber board and the second middle fiber board have the same structure and are not repeated.
As an example, the fire door core 12 is provided with at least one honeycomb-shaped circular hole filled with a fire-resistant material. The fireproof material is composed of magnesium oxide, magnesium chloride, magnesium sulfate, perlite, a foaming agent and the like.
As an example, the fire receiving surface of the fire door leaf 1 is opposite to the back fire surface of the fire door leaf 1, wherein the outer surface of the fire door leaf 1 is uniformly coated with a flame retardant paint layer.
As an example, a steel plate 16, specifically a cold-rolled hot-dipped steel plate, is further disposed between the first fire-proof plate 11 and the fire-proof door core plate 12, and a cold-rolled hot-dipped steel plate is further disposed between the second fire-proof plate 11 and the fire-proof door core plate 12; wherein, cold rolling and hot dipping are manufacturing processes.
In the embodiment of the application, the routing groove and the milling groove 7 are both arranged on the first medium density fiberboard and the second medium density fiberboard; wherein, mill type groove 7 run through first well fine board and second well fine board.
It should be noted that the medium density fiberboard 10 is one of medium density fiberboards, and the medium density fiberboards in china use agricultural three-residue or sub-small firewood as main raw materials, and the main components thereof are wood fiber, resin glue, and the like. The environment-friendly furniture building material substitute which is formed by hot grinding, drying, gluing, paving, hot pressing, post-treatment and sanding and replaces raw wood has the main advantages of low price compared with raw wood, easy processing, uniform material, good physical property and water and moisture resistance after the addition of paraffin and other articles.
In one embodiment, the medium density fiberboard 10 has a size of 1220mm 2440mm 3 mm.
In the embodiment of the present application, the first flame retardant panel 11 and the second flame retardant panel 11 are each 5mm thick.
In a specific embodiment, a fireproof lock 6 is disposed at a side of the middle of the fireproof door leaf 1 away from the fireproof hinge 8.
As an example, the fire door leaf 1 is provided with a locking device, the locking device comprises a fire bolt arranged above the back fire surface of the fire door leaf 1 and a fire lock 6 arranged in the middle of the fire surface of the fire door leaf 1, and specifically, the middle of the back fire surface of the fire door leaf 1 is provided with a handle.
In a specific embodiment, a framework 3 is arranged inside the fireproof door leaf 1; the skeleton 3 is made of flame-retardant wood. The frame 3 is respectively arranged at two sides of the fireproof door leaf 1.
In a specific embodiment, the outer surface of the fire door leaf 1 is uniformly coated with a fire retardant paint layer.
In a specific embodiment, the width of the fireproof door is 2096mm, the height of the fireproof door is 2400mm, the width of the fireproof door leaf 1 is 2010mm, and the height of the fireproof door leaf is 2331 mm; the distance between the first door leaf and the second door leaf is 3 mm; when a fire disaster happens, when the fireproof door leaf 1 is heated and deformed, the fireproof expansion sealing piece 13 deforms and keeps blocking gas, and toxic gas such as dense smoke is prevented from entering a room through a gap and causing harm to people in a safe area.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art should understand that the present invention is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art will also appreciate that the embodiments described in the specification are presently preferred and that no particular act is required in order to implement the invention.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The environmental protection fireproof door provided by the utility model is introduced in detail, and the principle and the implementation mode of the utility model are explained by applying a specific example, and the explanation of the above example is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (9)
1. An environment-friendly fireproof door is characterized by comprising a fireproof door frame and a fireproof door leaf;
the inner side of the fireproof door frame is connected with the fireproof door leaf through a fireproof hinge, milling grooves are respectively formed in the upper portion and the lower portion of the fireproof door leaf, and a milling groove is formed in the middle of the fireproof door leaf; the fireproof door leaf comprises a fire receiving surface and a back fire surface, and the fire receiving surface is opposite to the back fire surface;
the fireproof door leaf comprises a first door leaf and a second door leaf arranged side by side with the first door leaf, a limiting plate used for limiting the position of the first door leaf is arranged at the joint of the first door leaf and the second door leaf, and a groove used for containing the limiting plate is arranged at the joint of the second door leaf and the first door leaf; the groove and the limiting plate are both arranged on the fire receiving surface;
the fire receiving surface and the back fire surface of the fireproof door leaf are respectively provided with a moulding line; the molding line surrounds the milling type groove and the routing groove, and the molding line protrudes out of the fireproof door leaf; the thickness of the middle part of the moulding line is lower than that of the two sides; the moulding line is made of flame-retardant wood, and flame-retardant paint is brushed outside the moulding line;
and a sealing groove for accommodating a fireproof expansion sealing element is arranged on the side wall of the connection between the first door leaf and the second door leaf.
2. The environmentally friendly fire door of claim 1, wherein a first edge is provided at a junction of the first door leaf and the second door leaf, and a second edge is provided at a junction of the second door leaf and the first door leaf.
3. The environmentally friendly fire door of claim 1, wherein the fire rated intumescent seal is removably attached to the first door leaf.
4. The environmentally friendly fire door of claim 1, wherein the fire door leaf and the molding line are connected by a fire glue.
5. The environmentally friendly fire door of claim 1, wherein the fire door leaf comprises a first medium density fiberboard, a first fire-proof board, a fire door core board, a second fire-proof board and a second medium density fiberboard arranged in sequence; the first medium density fiberboard is arranged on the fire receiving surface, and the second medium density fiberboard is arranged on the back fire surface;
the fireproof door core plate is provided with at least one honeycomb hole, and fireproof materials are filled in the honeycomb hole.
6. The environmentally friendly fire door of claim 5, wherein the retainer plate is formed by an extension of the first medium density fiberboard and the first fire shield.
7. The environmentally friendly fire door of claim 1, wherein the fire door frame is made of metal.
8. The environmentally friendly fire door of claim 1, wherein a frame is provided inside the fire door leaf; the skeleton is made of flame-retardant wood.
9. The environmentally friendly fire door of claim 1, wherein the fire hinges comprise a first hinge, a second hinge, and a third hinge in a top-to-bottom sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220387342.3U CN217106735U (en) | 2022-02-23 | 2022-02-23 | Environment-friendly fireproof door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220387342.3U CN217106735U (en) | 2022-02-23 | 2022-02-23 | Environment-friendly fireproof door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217106735U true CN217106735U (en) | 2022-08-02 |
Family
ID=82599631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220387342.3U Active CN217106735U (en) | 2022-02-23 | 2022-02-23 | Environment-friendly fireproof door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217106735U (en) |
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2022
- 2022-02-23 CN CN202220387342.3U patent/CN217106735U/en active Active
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