Fireproof invisible door mounting structure
By using an aluminum alloy profile fixing frame and multiple sealing components, the design solves the problems of insufficient fire resistance and sealing ability of hidden doors, achieving effective isolation and structural stability in the event of a fire, and improving the service life and safety of hidden doors.
Patent Information
- Application Number
- CN202511687041.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-18
- Publication Date
- 2026-02-27
AI Technical Summary
Existing hidden doors have significant shortcomings in terms of fire resistance, sealing ability, material durability, and application range. In particular, they cannot effectively block flames and smoke in the event of a fire, and wooden materials are prone to moisture and deformation, affecting their functionality and lifespan.
The frame is fixed with aluminum alloy profiles and aluminum honeycomb decorative panels, combined with fireproof rock wool interlayer. The door frame is connected to the wall through multiple sealing components. Modular connection methods such as corner brackets and screws are used to ensure a firm connection and multiple seals between the door leaf and the wall.
It effectively blocks the penetration of flames and smoke in the event of a fire, enhances the heat insulation and fire resistance of the door, ensures structural stability and durability, reduces maintenance costs, and facilitates quick installation and maintenance.
Smart Images

Figure CN121576003A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of concealed door installation technology, specifically relating to a fireproof concealed door installation structure. Background Technology
[0002] Hidden doors, as a modern interior design element, are favored for their ability to blend seamlessly with the wall, maintaining the overall visual integrity and simplicity of the space. Traditional hidden doors are mostly made of wood baseboard and ordinary wood veneer, achieving a seamless connection with the surrounding decorative surfaces through a frameless and handle-less design, demonstrating certain advantages in terms of aesthetics and space utilization.
[0003] However, existing concealed door technology still has significant shortcomings in safety, durability, and practical application, especially in terms of fire resistance. Traditional concealed doors often use wood, which has poor fire resistance. Wooden concealed doors are easily combustible in high-temperature environments and can accelerate the spread of fire. These types of concealed doors cannot effectively block flames and high temperatures in the event of a fire, posing a serious threat to personnel evacuation and property protection. Wooden concealed doors are also susceptible to changes in environmental humidity during use, causing expansion or contraction and deformation, leading to difficulties in closing or opening the door. In humid environments, wood is even more prone to moisture absorption and deformation, affecting its functionality and lifespan.
[0004] Meanwhile, the sealing structure of traditional hidden doors has obvious defects. In order to maintain the concealment and opening flexibility of the door, there is usually a large gap between the door leaf and the door frame, which makes it impossible to effectively prevent the spread of smoke and toxic gases in the event of a fire.
[0005] Existing concealed door technology has significant shortcomings in fire resistance, sealing ability, material durability, and application range, which severely restricts its widespread use in modern buildings. Therefore, there is an urgent need for a new type of fire-resistant concealed door solution that can meet higher safety standards and functional requirements while maintaining aesthetics. Summary of the Invention
[0006] To address the aforementioned problems, the present invention aims to provide a fireproof concealed door installation structure.
[0007] The specific technical solution is as follows: A fireproof concealed door installation structure includes a fireproof door leaf, a fireproof door frame, and a wall. The fireproof door frame is installed outside the wall. The fireproof door frame and the wall are connected by a first connecting component and a second connecting component. The fireproof door leaf is located inside the fireproof door frame and includes an aluminum alloy profile fixing frame. The inner and outer sides of the aluminum alloy profile fixing frame are provided with aluminum honeycomb decorative panels. The left, right, and top sides of the aluminum alloy profile fixing frame are provided with first sealing frames, and the bottom side of the aluminum alloy profile fixing frame is provided with a second sealing frame. One end of the second connecting component is connected to the wall, and the other end is connected to the fireproof door frame and extends outside the fireproof door frame. It is connected to the first sealing frames on the left, right, and top sides of the aluminum alloy profile fixing frame by sealing strips. A door hinge is also provided between the first sealing frame on one side of the left and right sides of the aluminum alloy profile fixing frame and the second connecting component to realize the movable connection between the fireproof door leaf and the fireproof door frame.
[0008] Furthermore, the aluminum alloy profile fixing frame includes a first aluminum alloy profile frame, a second aluminum alloy profile frame, a third aluminum alloy profile frame, and a fourth aluminum alloy profile frame. The first aluminum alloy profile frame serves as a vertical support rod on one side of the aluminum alloy profile fixing frame, the second aluminum alloy profile frame serves as a vertical support rod on the other side of the aluminum alloy profile fixing frame, the third aluminum alloy profile frame serves as a horizontal connecting rod at the upper and lower ends of the aluminum alloy profile fixing frame, and the fourth aluminum alloy profile frame serves as a horizontal connecting rod connecting the first aluminum alloy profile frame and the second aluminum alloy profile frame. The vertical support rod and the horizontal connecting rod are connected by angle brackets and screws.
[0009] Furthermore, the first connecting assembly includes a first aluminum alloy plug-in, a second aluminum alloy plug-in, and a first galvanized square tube. The first aluminum alloy plug-in includes a first connecting plate and an L-shaped insert. The second aluminum alloy plug-in includes a connecting member, a fourth connecting plate, and a first slot. The first connecting plate is connected to the profile frame inside the fire door frame. One end of the L-shaped insert is inserted into the connecting seam between the fire door frames, and the other end is inserted into the first slot, thereby achieving a sealed connection between the first and second aluminum alloy plug-in. The connecting member is an L-shaped connecting plate, including a second connecting plate and a third connecting plate. The second connecting plate is connected to the profile frame inside the fire door frame, and the third connecting plate is inserted into the connecting seam between the fire door frames. The fourth connecting plate is connected to the first galvanized square tube by screws, and a rubber gasket is provided at the connection point. The first galvanized square tube is connected to the wall by angle brackets and expansion bolts.
[0010] Furthermore, the second connecting assembly includes a second galvanized square tube, a fifth aluminum alloy profile frame, a sixth aluminum alloy profile frame, and a seventh aluminum alloy profile frame. The second galvanized square tube is connected to the wall via angle brackets and expansion bolts. The fifth aluminum alloy profile frame extends to form a fifth connecting plate, which is connected to the second galvanized square tube via screws. The sixth and seventh aluminum alloy profile frames extend to form a fireproof door frame and are spliced together to form a second slot. The fifth, sixth, and seventh aluminum alloy profile frames are fixedly connected via screws. A fireproof sealing strip and fireproof sealant are sequentially provided inside the second slot. The side of the seventh aluminum alloy profile frame facing the fireproof door leaf has a raised structure, and a sealing strip is provided at the raised structure.
[0011] Furthermore, the first sealing frame includes an eighth aluminum alloy profile frame and a ninth aluminum alloy profile frame. The eighth aluminum alloy profile frame and the ninth aluminum alloy profile frame are spliced together to form a third slot. The eighth aluminum alloy profile frame, the ninth aluminum alloy profile frame and the aluminum alloy profile fixing frame are connected by screws. Fireproof sealing strips and fireproof sealant are sequentially provided in the third slot. The cross-section of the ninth aluminum alloy profile frame is L-shaped, and it contacts the sealing strip set at the protruding structure.
[0012] Furthermore, the second frame includes a tenth aluminum alloy profile frame and an eleventh aluminum alloy profile frame. The tenth aluminum alloy profile frame and the eleventh aluminum alloy profile frame are spliced together to form a fourth slot. The tenth aluminum alloy profile frame, the eleventh aluminum alloy profile frame and the aluminum alloy profile fixing frame are connected by screws. Fireproof sealing strips and fireproof sealant are sequentially provided in the fourth slot. The lower surfaces of the tenth aluminum alloy profile frame and the eleventh aluminum alloy profile frame are flush.
[0013] Furthermore, fireproof rock wool is installed in the interlayer between the aluminum honeycomb decorative panels on the inner and outer sides of the aluminum alloy profile fixing frame.
[0014] Furthermore, the fire door frame is made of aluminum honeycomb decorative panel.
[0015] Furthermore, a door handle is provided on the inside of the fireproof door leaf.
[0016] Furthermore, the outer side of the seventh aluminum alloy profile frame is flush with the outer side of the fire door frame, the outer side of the ninth aluminum alloy profile frame, and the outer side of the fire door leaf.
[0017] The beneficial effects of this invention are as follows: 1) This invention uses an aluminum alloy profile fixed frame combined with inner and outer aluminum honeycomb decorative panels to make the fire door leaf meet fire resistance requirements while achieving visual unity with the surrounding walls, achieving an "invisible" effect. The fireproof rock wool interlayer further enhances the heat insulation and fire resistance performance of the door. 2) The door frame and door leaf of the present invention form a multi-seal interface through multiple sealing components. This design can effectively prevent the penetration of flames and toxic fumes when a fire occurs. 3) The present invention uses a first connecting component and a second connecting component to firmly connect the door frame to the wall, which not only ensures the rigidity and stability of the overall structure and prevents the door leaf from loosening and tipping over due to long-term use or external impact, but also its modular connection method (such as using corner brackets, screws, etc.) facilitates quick on-site installation and precise debugging. 4) The main material of this invention is aluminum alloy profile, which has the characteristics of corrosion resistance and aging resistance, ensuring that the door can maintain stable performance under long-term use and extending its service life. In addition, the clear component division and detachable connection design provide convenience for later inspection and maintenance work and reduce maintenance costs. Attached Figure Description
[0018] Figure 1 This is an elevation view of the fireproof concealed door of the present invention; Figure 2 A structural diagram of a frame for fixing aluminum alloy profiles; Figure 3 This is a schematic cross-sectional view along the 1-1 direction; Figure 4 This is a schematic cross-sectional view along the 2-2 direction; Figure 5 This is a magnified view of the details at point A; Figure 6 This is a magnified view of the details at point B; Figure 7 This is a magnified view of the details at point C; Figure 8 This is a magnified view of the details at point D; Figure 9 This is a magnified view of the details at point E; Figure 10 This is a magnified view of the details at point F.
[0019] In the diagram: 1. Fireproof door leaf; 11. Aluminum alloy profile fixing frame; 111. First aluminum alloy profile frame; 112. Second aluminum alloy profile frame; 113. Third aluminum alloy profile frame; 114. Fourth aluminum alloy profile frame; 2. Fireproof door frame; 3. Wall; 4. First connecting component; 41. First aluminum alloy plug-in; 411. First connecting plate; 412. L-shaped plug; 42. Second aluminum alloy plug-in; 421. Connecting component; 4211. Second connecting plate; 4212. Third connecting plate; 422. Fourth connecting plate; 423. First slot; 43. 5. First galvanized square tube; 6. Second connecting assembly; 7. Second galvanized square tube; 8. Fifth aluminum alloy profile frame; 9. Fifth connecting plate; 10. Sixth aluminum alloy profile frame; 11. Seventh aluminum alloy profile frame; 12. Raised structure; 13. Second slot; 14. First sealing frame; 15. Eighth aluminum alloy profile frame; 16. Ninth aluminum alloy profile frame; 17. Third slot; 18. Second sealing frame; 19. Tenth aluminum alloy profile frame; 10. Eleventh aluminum alloy profile frame; 11. Fourth slot; 12. Door hinge; 13. Fireproof rock wool; 14. Door handle. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.
[0021] like Figure 1 As shown, a fireproof concealed door installation structure includes a fireproof door leaf 1 and a fireproof door frame 2, with the fireproof door leaf 1 located inside the fireproof door frame 2 to form a concealed door.
[0022] like Figure 2-4 As shown, a fireproof door frame 2 is installed on the outside of the wall 3. The fireproof door frame 2 is made of aluminum honeycomb decorative panels. The fireproof door leaf 1 includes an aluminum alloy profile fixing frame 11. The inner and outer sides of the aluminum alloy profile fixing frame 11 are provided with aluminum honeycomb decorative panels. Fireproof rock wool 9 is installed in the interlayer between the aluminum honeycomb decorative panels. Figure 2 As shown, the aluminum alloy profile fixing frame 11 includes a first aluminum alloy profile frame 111, a second aluminum alloy profile frame 112, a third aluminum alloy profile frame 113, and a fourth aluminum alloy profile frame 114. The first aluminum alloy profile frame 111 serves as a vertical support rod on one side of the aluminum alloy profile fixing frame 11, the second aluminum alloy profile frame 112 serves as a vertical support rod on the other side of the aluminum alloy profile fixing frame 11, the third aluminum alloy profile frame 113 serves as a horizontal connecting rod at the upper and lower ends of the aluminum alloy profile fixing frame 11, and the fourth aluminum alloy profile frame 114 serves as a horizontal connecting rod connecting the first aluminum alloy profile frame 111 and the second aluminum alloy profile frame 112. The vertical support rod and the horizontal connecting rod are connected by angle brackets and screws.
[0023] like Figure 5 , Figure 6 and Figure 8 As shown, the aluminum alloy profile fixing frame 11 has a first sealing frame 6 on the left, right and top sides. The inner and outer sides of the first sealing frame 6 are flush with the inner and outer sides of the fire door leaf 1. The first sealing frame 6 includes an eighth aluminum alloy profile frame 61 and a ninth aluminum alloy profile frame 62. The eighth aluminum alloy profile frame 61 and the ninth aluminum alloy profile frame 62 are spliced to form a third slot 63. Fireproof sealing strip and fireproof sealant are sequentially provided in the third slot 63. The cross-section of the ninth aluminum alloy profile frame 62 is L-shaped. The first aluminum alloy profile frame 111 is fixedly connected to the eighth aluminum alloy profile frame 61 and the ninth aluminum alloy profile frame 62 on the left side by screws. The second aluminum alloy profile frame 112 is fixedly connected to the eighth aluminum alloy profile frame 61 and the ninth aluminum alloy profile frame 62 on the right side by screws. The third aluminum alloy profile frame 113 at the top is fixedly connected to the eighth aluminum alloy profile frame 61 and the ninth aluminum alloy profile frame 62 on the top side by screws.
[0024] like Figure 9 As shown, the lower side of the aluminum alloy profile fixing frame 11 is provided with a second sealing frame 7. The second sealing frame 7 includes a tenth aluminum alloy profile frame 71 and an eleventh aluminum alloy profile frame 72. The tenth aluminum alloy profile frame 71 and the eleventh aluminum alloy profile frame 72 are spliced together to form a fourth slot 73. The tenth aluminum alloy profile frame 71, the eleventh aluminum alloy profile frame 72 and the bottom third aluminum alloy profile frame 113 are connected by screws. Fireproof sealing strips and fireproof sealant are sequentially provided in the fourth slot 73. The lower surfaces of the tenth aluminum alloy profile frame 71 and the eleventh aluminum alloy profile frame 72 are flush.
[0025] The fire door frame 2 and the wall 3 are connected by a first connecting component 4 and a second connecting component 5, such as... Figure 7 and Figure 10As shown, the fire door frame 2 on both the side and top is equipped with a first connecting assembly 4. The first connecting assembly 4 includes a first aluminum alloy plug-in 41, a second aluminum alloy plug-in 42, and a first galvanized square tube 43. The first aluminum alloy plug-in 41 includes a first connecting plate 411 and an L-shaped insert 412. The second aluminum alloy plug-in 42 includes a connecting member 421, a fourth connecting plate 422, and a first slot 423. The first connecting plate 411 is connected to the profile frame inside the fire door frame 2. One end of the L-shaped insert 412 is inserted into the connecting seam between the fire door frames 2, and the other end is inserted into the first slot 423, thereby realizing the connection between the first aluminum alloy plug-in 41 and the profile frame 423. The sealing connection of the second aluminum alloy connector 42 is used to achieve a sealed splice between the fire door frames 2. The connecting component 421 is an L-shaped connecting plate, including a second connecting plate 4211 and a third connecting plate 4212. The second connecting plate 4211 is connected to the profile frame inside the fire door frame 2. The third connecting plate 4212 is inserted into the connecting seam between the fire door frames 2. The fourth connecting plate 422 is connected to the first galvanized square tube 43 by screws. A rubber pad is provided at the connection. The first galvanized square tube 43 is connected to the wall 3 by angle brackets and expansion bolts. One side panel of the angle bracket is welded to the first galvanized square tube 43, and the other side is connected to the wall 3 by expansion bolts.
[0026] like Figure 4 , Figure 5 and Figure 8 As shown, the fire door frame 2 on both the side and top is equipped with a second connecting assembly 5. The second connecting assembly 5 includes a second galvanized square tube 51, a fifth aluminum alloy profile frame 52, a sixth aluminum alloy profile frame 53, and a seventh aluminum alloy profile frame 54. The second galvanized square tube 51 is connected to the wall 3 via angle brackets and expansion bolts. The fifth aluminum alloy profile frame 52 extends into a fifth connecting plate 521, which is connected to the second galvanized square tube 51 via screws. The sixth aluminum alloy profile frame 53 and the seventh aluminum alloy profile frame 54 extend out of the fire door frame 2, and... The second slot 55 is constructed by splicing together the fifth aluminum alloy profile frame 52, the sixth aluminum alloy profile frame 53, and the seventh aluminum alloy profile frame 54, which are fixedly connected by screws. Fireproof sealing strips and fireproof sealant are sequentially installed inside the second slot 55. A raised structure 541 is provided on the side of the seventh aluminum alloy profile frame 54 facing the fire door leaf 1, and a sealing strip is installed at the raised structure 541. The ninth aluminum alloy profile frame 62 of the first sealing frame 6 on the left, right, and top sides respectively contacts the sealing strips at the raised structures 541 on the side and top. A door handle 10 is provided on the inside of the fire door leaf 1. A door hinge 8 is also provided between the inside of the first sealing frame 6 on the right side and the adjacent second connecting assembly 5 to achieve a movable connection between the fire door leaf 1 and the fire door frame 2. The outer sides of the seventh aluminum alloy profile frames 54 on the left and right sides are flush with the outer sides of the fire door frame 2, the ninth aluminum alloy profile frame 62, and the fire door leaf 1. All aluminum alloy profile frames are solid profiles.
Claims
1. A fireproof concealed door installation structure, characterized in that, The fire door includes a fireproof door leaf (1), a fireproof door frame (2), and a wall (3). The fireproof door frame (2) is installed outside the wall (3). The fireproof door frame (2) and the wall (3) are connected by a first connecting component (4) and a second connecting component (5). The fireproof door leaf (1) is located inside the fireproof door frame (2). The fireproof door includes an aluminum alloy profile fixing frame (11). The inner and outer sides of the aluminum alloy profile fixing frame (11) are provided with aluminum honeycomb decorative panels. The left, right, and top sides of the aluminum alloy profile fixing frame (11) are provided with a first sealing frame (6). The frame (11) is provided with a second sealing frame (7) on the lower side. One end of the second connecting component (5) is connected to the wall (3), and the other end is connected to the fire door frame (2) and extends to the outside of the fire door frame (2). It is connected to the first sealing frame (6) on the left and right sides and the upper side of the aluminum alloy profile fixing frame (11) by a sealing strip. A door hinge (8) is also provided between the first sealing frame (6) on one side of the left and right sides of the aluminum alloy profile fixing frame (11) and the second connecting component (5) to realize the movable connection between the fire door leaf (1) and the fire door frame (2).
2. The fireproof concealed door installation structure as described in claim 1, characterized in that, The aluminum alloy profile fixing frame (11) includes a first aluminum alloy profile frame (111), a second aluminum alloy profile frame (112), a third aluminum alloy profile frame (113), and a fourth aluminum alloy profile frame (114). The first aluminum alloy profile frame (111) serves as a vertical support rod on one side of the aluminum alloy profile fixing frame (11), the second aluminum alloy profile frame (112) serves as a vertical support rod on the other side of the aluminum alloy profile fixing frame (11), the third aluminum alloy profile frame (113) serves as a horizontal connecting rod at the upper and lower ends of the aluminum alloy profile fixing frame (11), and the fourth aluminum alloy profile frame (114) serves as a horizontal connecting rod connecting the first aluminum alloy profile frame (111) and the second aluminum alloy profile frame (112). The vertical support rod and the horizontal connecting rod are connected by angle brackets and screws.
3. The fireproof concealed door installation structure as described in claim 2, characterized in that, The first connecting assembly (4) includes a first aluminum alloy connector (41), a second aluminum alloy connector (42), and a first galvanized square tube (43). The first aluminum alloy connector (41) includes a first connecting plate (411) and an L-shaped plug (412). The second aluminum alloy connector (42) includes a connecting member (421), a fourth connecting plate (422), and a first slot (423). The first connecting plate (411) is connected to the profile frame inside the fire door frame (2). One end of the L-shaped plug (412) is inserted into the connecting seam between the fire door frames (2), and the other end is inserted into the first slot (423). This achieves a sealed connection between the first aluminum alloy connector (41) and the second aluminum alloy connector (42). The connecting component (421) is an L-shaped connecting plate, including a second connecting plate (4211) and a third connecting plate (4212). The second connecting plate (4211) is connected to the profile frame inside the fire door frame (2). The third connecting plate (4212) is inserted into the connecting seam between the fire door frames (2). The fourth connecting plate (422) is connected to the first galvanized square tube (43) by screws. A rubber pad is provided at the connection. The first galvanized square tube (43) is connected to the wall (3) by angle brackets and expansion bolts.
4. The fireproof concealed door installation structure as described in claim 3, characterized in that, The second connecting component (5) includes a second galvanized square tube (51), a fifth aluminum alloy profile frame (52), a sixth aluminum alloy profile frame (53), and a seventh aluminum alloy profile frame (54). The second galvanized square tube (51) is connected to the wall (3) by angle brackets and expansion bolts. The fifth aluminum alloy profile frame (52) extends to a fifth connecting plate (521) and is connected to the second galvanized square tube (51) by screws. The sixth aluminum alloy profile frame (53) and the seventh aluminum alloy profile frame (54) extend to the fireproof door frame (2) and are spliced to form a second slot (55). The fifth aluminum alloy profile frame (52), the sixth aluminum alloy profile frame (53), and the seventh aluminum alloy profile frame (54) are fixedly connected by screws. The second slot (55) is provided with a fireproof sealing strip and a fireproof sealant in sequence. The seventh aluminum alloy profile frame (54) has a protruding structure (541) on the side facing the fireproof door leaf (1), and a sealing strip is provided at the protruding structure (541).
5. The fireproof concealed door installation structure as described in claim 4, characterized in that, The first sealing frame (6) includes the eighth aluminum alloy profile frame (61) and the ninth aluminum alloy profile frame (62). The eighth aluminum alloy profile frame (61) and the ninth aluminum alloy profile frame (62) are spliced together to form the third slot (63). The eighth aluminum alloy profile frame (61), the ninth aluminum alloy profile frame (62) and the aluminum alloy profile fixing frame (11) are connected by screws. The third slot (63) is provided with fireproof sealing strip and fireproof sealant in sequence. The cross-section of the ninth aluminum alloy profile frame (62) is L-shaped, and it contacts the sealing strip set at the protruding structure (541).
6. The fireproof concealed door installation structure as described in claim 5, characterized in that, The second frame (7) includes the tenth aluminum alloy profile frame (71) and the eleventh aluminum alloy profile frame (72). The tenth aluminum alloy profile frame (71) and the eleventh aluminum alloy profile frame (72) are spliced together to form the fourth slot (73). The tenth aluminum alloy profile frame (71), the eleventh aluminum alloy profile frame (72) and the aluminum alloy profile fixing frame (11) are connected by screws. The fourth slot (73) is provided with fireproof sealing strips and fireproof sealant in sequence. The lower surfaces of the tenth aluminum alloy profile frame (71) and the eleventh aluminum alloy profile frame (72) are flush.
7. The fireproof concealed door installation structure as described in claim 6, characterized in that, Fireproof rock wool (9) is provided in the interlayer between the aluminum honeycomb decorative panels on the inner and outer sides of the aluminum alloy profile fixing frame (11).
8. The fireproof concealed door installation structure as described in claim 7, characterized in that, The fireproof door frame (2) is made of aluminum honeycomb decorative panel.
9. The fireproof concealed door installation structure as described in claim 8, characterized in that, The fireproof door leaf (1) is equipped with a door handle (10) on the inside.
10. The fireproof concealed door installation structure as described in claim 9, characterized in that, The outer side of the seventh aluminum alloy profile frame (54) is flush with the outer side of the fire door frame (2), the outer side of the ninth aluminum alloy profile frame (62), and the outer side of the fire door leaf (1).