Steel fire door with honeycomb aluminum filling layer
By optimizing the door panel structure, convenient assembly of the honeycomb aluminum filling layer and the door panel was achieved, reducing production costs and protecting the performance of the honeycomb aluminum panel, thus solving the problem of difficult assembly in existing technologies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU ZHONGCHENG BOYUAN DOOR IND CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-16
AI Technical Summary
The current steel fire door manufacturing process involves a complicated assembly process for the door panel and the honeycomb aluminum filling layer, resulting in high assembly difficulty and production costs.
The door panel structure is optimized by using recessed sections and guide bevels to make it easier to assemble the honeycomb aluminum filling layer with the door panel, and a rubber coating layer is used to protect the honeycomb aluminum panel and prevent deformation.
This reduces the assembly difficulty and production cost of the door panel components and the honeycomb aluminum filling layer, while protecting the performance of the honeycomb aluminum panel.
Smart Images

Figure CN224363849U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire door technology, and in particular to a steel fire door with a honeycomb aluminum filling layer. Background Technology
[0002] The main function of fire doors is to prevent the spread of fire and smoke, giving people more time to escape during a fire. They are usually installed in fire compartments, evacuation stairwells, vertical shafts, bedrooms, or bathrooms in buildings to serve as fire-resistant partitions.
[0003] In existing technologies, steel fire doors typically have a honeycomb aluminum filling layer inside, which is lightweight and high-strength, increasing the door panel's compressive strength and significantly reducing the overall weight.
[0004] However, in the existing steel fire door production process, the combination of the door panel and the honeycomb aluminum filling layer often requires a relatively complicated operation due to the structural limitations of the door panel and the honeycomb aluminum filling layer, making assembly difficult and resulting in high production costs for steel fire doors.
[0005] Therefore, it is necessary to invent a steel fire door with a honeycomb aluminum filling layer to solve the above problems. Utility Model Content
[0006] The purpose of this utility model is to provide a steel fire door with a honeycomb aluminum filling layer. By optimizing the structure of the door leaf assembly, the door leaf assembly can be more easily assembled with the honeycomb aluminum filling layer, reducing the assembly difficulty and production cost of the door leaf assembly and the honeycomb aluminum filling layer. At the same time, the honeycomb aluminum plate can be protected during the assembly process to prevent deformation of the honeycomb aluminum plate from affecting its performance. This solves the problem mentioned in the background art that in the production process of existing steel fire doors, the combination of the door panel and the honeycomb aluminum filling layer often requires a relatively cumbersome operation and has a high assembly difficulty due to the structural limitations of the door panel and the honeycomb aluminum filling layer, resulting in high production costs for steel fire doors.
[0007] According to one aspect of this disclosure, the following technical solution is provided: a steel fire door with a honeycomb aluminum filling layer, comprising:
[0008] A door frame assembly for mounting a door leaf assembly;
[0009] A door leaf assembly, comprising an inner shell and an outer shell, wherein the outer side of the inner shell has a recessed portion near the outer shell, and the inner side of the outer shell has a guide slope near the inner shell; a cover plate is fixedly mounted on the left side of the front of the inner shell, and a sound insulation strip that fits against the door frame body is adhesively mounted on the back of the cover plate; and
[0010] A honeycomb aluminum filler layer is used to fill the interior of the door panel assembly.
[0011] According to at least one embodiment of the present disclosure, a steel fire door with a honeycomb aluminum filling layer is provided, wherein the door frame assembly includes a door frame body, the door frame body is filled with cement mortar filler, and an anti-collision strip is bonded and fixedly provided on the inner side of the door frame body, the anti-collision strip being attached to the outer shell.
[0012] According to at least one embodiment of the present disclosure, a steel fire door with a honeycomb aluminum filling layer is provided with a stainless steel hinge fixedly installed on the right side of the front of the door frame body, and the stainless steel hinge is fixedly connected to the inner shell.
[0013] According to at least one embodiment of the present disclosure, a steel fire door with a honeycomb aluminum filling layer includes a honeycomb aluminum plate, and a protective shell is sleeved on all four sides of the outer side of the honeycomb aluminum plate. The protective shell is fixedly sleeved on the outer side of the honeycomb aluminum plate by friction.
[0014] According to at least one embodiment of the present disclosure, a steel fire door with a honeycomb aluminum filling layer is provided with a rubber covering layer bonded and fixed to the outside of the protective shell.
[0015] The technical effects and advantages of this utility model are as follows:
[0016] This invention features a door panel assembly and a rubber covering layer. During assembly, the honeycomb aluminum filling layer is first placed inside the inner shell, with the outer wall of the rubber covering layer adhering to the inner wall. Then, the outer shell is fitted onto the outside of the recessed portion using a guide ramp. Finally, a pressure device is used to press down on the outer shell, causing the recessed portion to enter the inner shell and be fixed through friction. During the pressing process, the rubber covering layer separates the honeycomb aluminum panel from the outer shell, preventing friction and deformation. Compared to existing technologies, this invention optimizes the door panel assembly structure, making it easier to assemble with the honeycomb aluminum filling layer, reducing assembly difficulty and production costs. It also protects the honeycomb aluminum panel during assembly, preventing deformation and ensuring performance. Attached Figure Description
[0017] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.
[0018] Figure 1 This is a schematic diagram of the overall structure of a steel fire door with a honeycomb aluminum filling layer according to one embodiment of the present disclosure.
[0019] Figure 2 This is a partial structural diagram of the door frame assembly and door leaf assembly of a steel fire door with a honeycomb aluminum filling layer according to one embodiment of the present disclosure.
[0020] Figure 3 This is a partial schematic diagram of the door leaf assembly of a steel fire door with a honeycomb aluminum filling layer according to one embodiment of the present disclosure.
[0021] The specific labels in the attached figures are as follows:
[0022] 1. Door frame assembly; 11. Door frame body; 12. Cement mortar filler; 13. Anti-collision strip; 14. Stainless steel hinges;
[0023] 2. Door leaf assembly; 21. Inner shell; 22. Outer shell; 23. Recessed part; 24. Guide slope; 25. Cover plate; 26. Sound insulation strip;
[0024] 3. Honeycomb aluminum filling layer; 31. Honeycomb aluminum panel; 32. Protective shell; 33. Rubber coating layer. Detailed Implementation
[0025] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” other components or features would subsequently be positioned “above” said other components or features. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.
[0026] Figure 1 This is a schematic diagram of the overall structure of a steel fire door with a honeycomb aluminum filling layer according to one embodiment of the present disclosure.
[0027] Figure 2 This is a partial structural diagram of the door frame assembly 1 and door leaf assembly 2 of a steel fire door with a honeycomb aluminum filling layer according to one embodiment of the present disclosure.
[0028] Figure 3This is a partial structural diagram of the door leaf assembly 2 and the honeycomb aluminum filling layer 3 of a steel fire door with a honeycomb aluminum filling layer according to one embodiment of the present disclosure.
[0029] like Figures 1-3 As shown, the steel fire door with a honeycomb aluminum filling layer disclosed herein may include components such as a door frame assembly 1, a door leaf assembly 2, and a honeycomb aluminum filling layer 3.
[0030] It should also be noted that the door frame assembly 1 and the door leaf assembly 2 are both equipped with a lock and handle assembly. The lock and handle assembly is a prior art, so its specific structure will not be described in detail here.
[0031] like Figure 2 As shown in this disclosure, the door frame assembly 1 includes a door frame body 11, the inside of which is filled with cement mortar filler 12, and an anti-collision strip 13 is bonded and fixedly installed on the inner side of the door frame body 11. The anti-collision strip 13 is attached to the outer shell 22, and a stainless steel hinge 14 is fixedly installed on the right side of the front of the door frame body 11. The stainless steel hinge 14 is fixedly connected to the inner shell 21.
[0032] Therefore, when the door assembly 2 is closed, the anti-collision strip 13 supports the door assembly 2, preventing the door assembly 2 from directly impacting the door frame body 11 and generating excessive noise.
[0033] like Figures 1-3 As shown, in a preferred embodiment, the door panel assembly 2 includes an inner housing 21 and an outer housing 22. The outer side of the inner housing 21 is provided with a recessed portion 23 near the outer housing 22, and the inner side of the outer housing 22 is provided with a guide slope 24 near the inner housing 21. A cover plate 25 is fixedly provided on the left side of the front of the inner housing 21, and a sound insulation strip 26 that fits against the door frame body 11 is glued to the back of the cover plate 25.
[0034] Therefore, when assembling the door panel assembly 2 in actual production, the honeycomb aluminum filling layer 3 is first placed inside the inner shell 21. At this time, the outer wall of the rubber covering layer 33 is attached to the inner wall of the inner shell 21. Then, the outer shell 22 is fitted onto the outer side of the concave portion 23 by the guiding action of the guide slope 24. Finally, the outer shell 22 is pressed down by the pressurizing equipment, so that the concave portion 23 enters the inner side of the outer shell 22 and is fixed by friction. Compared with the existing technology, by optimizing the structure of the door panel assembly 2, the door panel assembly 2 can be more easily assembled with the honeycomb aluminum filling layer 3, reducing the assembly difficulty and production cost of the door panel assembly 2 and the honeycomb aluminum filling layer 3.
[0035] In addition, the sound insulation strip 26 allows the door panel 2 to fit tightly against the front of the door frame body 11 after the door panel 2 is closed. Together with the anti-collision strip 13, it can reduce the transmission of sound and play a role in sealing and sound insulation.
[0036] like Figure 3 As shown in this disclosure, the honeycomb aluminum filling layer 3 includes a honeycomb aluminum plate 31. A protective shell 32 is sleeved on all four sides of the outer side of the honeycomb aluminum plate 31. The protective shell 32 is fixedly sleeved on the outer side of the honeycomb aluminum plate 31 by friction. A rubber covering layer 33 is adhesively fixed on the outer side of the protective shell 32.
[0037] Therefore, during the pressing of the outer shell 22, the rubber covering layer 33 separates the honeycomb aluminum plate 31 from the outer shell 22, preventing the outer shell 22 and the honeycomb aluminum plate 31 from scratching each other and causing deformation of the honeycomb aluminum plate 31. This protects the honeycomb aluminum plate 31 during the assembly process and prevents deformation of the honeycomb aluminum plate 31 from affecting its performance.
[0038] It should also be noted that any content not described in detail in this specification is prior art known to those skilled in the art.
[0039] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.
Claims
1. A steel fire door with a honeycomb aluminum filling layer, characterized in that, include: A door frame assembly for mounting a door leaf assembly; A door leaf assembly, comprising an inner shell and an outer shell, wherein the outer side of the inner shell has a recessed portion near the outer shell, and the inner side of the outer shell has a guide slope near the inner shell; a cover plate is fixedly mounted on the left side of the front of the inner shell, and a sound insulation strip that fits against the door frame body is adhesively mounted on the back of the cover plate; and A honeycomb aluminum filler layer is used to fill the interior of the door panel assembly.
2. The steel fire door with a honeycomb aluminum filling layer according to claim 1, characterized in that: The door frame assembly includes a door frame body, the interior of which is filled with cement mortar filler, and an anti-collision strip is bonded and fixed to the inner side of the door frame body, the anti-collision strip being attached to the outer shell.
3. The steel fire door with a honeycomb aluminum filling layer according to claim 2, characterized in that: A stainless steel hinge is fixedly installed on the right side of the front of the door frame body, and the stainless steel hinge is fixedly connected to the inner shell.
4. The steel fire door with a honeycomb aluminum filling layer according to claim 3, characterized in that: The honeycomb aluminum filling layer includes a honeycomb aluminum plate, and a protective shell is sleeved on all four sides of the outer side of the honeycomb aluminum plate. The protective shell is fixed to the outer side of the honeycomb aluminum plate by friction.
5. The steel fire door with a honeycomb aluminum filling layer according to claim 4, characterized in that: A rubber coating layer is bonded and fixed to the outside of the protective shell.