A veneered door structure and a method for constructing the same
Patent Information
- Application Number
- CN202411790449.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2044-12-06
AI Technical Summary
[0002]在高层建筑、大型商场、厂房、酒店等人员密集的场所,往往需要在建筑物内部装饰面设置暗门,在暗门内部安装配电箱或者消防器材等设施,但现有的暗门通常自身的重量很大,开启闭合都不方便,还需要在暗门与墙面之间预留较大的缝隙,影响工程的整体性和美观性
推块会在两侧推动复位机构的带动下向门板一侧移动,从而带动外壁的第一压板对气囊进行挤压,气囊受到挤压后会将内壁气体充入气缸,从而推动气缸输出轴一侧的梯形插块向前移动,直到梯形插块整体插入卡槽内壁,此时门板整体即可在梯形插块和卡槽的限位下被固定在安装框内部,此时安装框和门板整体与装饰面墙体外壁没有高度差,同时表面没有缝隙,提高了装饰面墙体外壁整体的光洁度。
Smart Images

Figure CN119754675B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of decorative concealed doors, and more particularly to a decorative concealed door structure and its construction method. Background Technology
[0002] In densely populated places such as high-rise buildings, large shopping malls, factories, and hotels, it is often necessary to install hidden doors on the interior decorative surfaces of the building. Electrical distribution boxes or fire-fighting equipment are installed inside the hidden doors. However, existing hidden doors are usually very heavy, making them inconvenient to open and close. Furthermore, a large gap needs to be left between the hidden door and the wall, which affects the overall integrity and aesthetics of the project.
[0003] To address the aforementioned issues, a search revealed Chinese patent application number CN202310962122.8, which discloses a double-sided concealed door system and its installation method. The system includes an inner frame, an outer frame, and an inner frame. The outer frame surrounds the inner frame circumferentially to form a closed frame, and the inner frame is connected within the closed frame. However, this technical solution requires bolts to fix the concealed door to the decorative surface, resulting in the concealed door protruding a certain distance from the decorative surface. Furthermore, the concealed door structure cannot be flush with the decorative surface, potentially affecting the overall decorative effect and aesthetics. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a decorative concealed door structure and its construction method.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A concealed door structure includes an installation frame inserted into the inner wall of a decorative wall. A set of connecting frames is fixed to one outer wall of the installation frame. A slider is slidably connected to the inner wall of the connecting frame. A door panel is fixed to one outer wall of the slider. The door panel is inserted into the inner wall of the installation frame. A rectangular through hole is opened on one outer wall of the door panel. A connecting rod is rotatably connected to the inner wall of the rectangular through hole via a damping shaft. A rotating plate is fixed to the outer wall of the connecting rod. A set of airbags is fixed to the outer wall of the door panel. A first pressure plate is fixed to the outer wall of the airbags. A push block is fixed to the outer wall of the first pressure plate. A set of cylinders is fixed to one outer wall of the slider. A trapezoidal insert is fixed to the output shaft of the cylinders. Slots are opened on both outer walls of the connecting frame.
[0006] Preferably, a clamping plate is fixed to one side of the outer wall of the slider, and a second air valve is provided on the outer wall of the clamping plate. The second air valve is connected to the input end of the cylinder through a pipeline.
[0007] Furthermore: the outer wall of the first pressure plate is provided with a first air valve, the first air valve is connected to the air bag through a pipeline, the first air valve and the second air valve are connected through an air supply pipeline, and the outer walls on both sides of the push block are provided with a push reset mechanism.
[0008] A further preferred embodiment: the outer wall of one side of the decorative wall has an installation groove and a reserved groove, and a set of fixing plates is fixed to the outer wall of one side of the installation frame. The outer wall of the fixing plates has fixing holes, and the fixing plates are fixed to the inner wall of the installation groove by bolts.
[0009] As a preferred embodiment of the present invention: the push reset mechanism includes a support groove, a spring, and a second pressure plate. The support groove is disposed on one outer wall of the door panel, the spring is fixed on the inner wall of the support groove, and the second pressure plate is fixed on both outer walls of the push block. One outer wall of the spring is fixed on the outer wall of the second pressure plate.
[0010] As a further preferred embodiment of the present invention: a set of guide frames is fixed on one side of the outer wall of the door panel, and a set of connecting blocks is fixed on one side of the outer wall of the push block. The connecting blocks and the outer walls of the push block are rotatably connected to a first roller and a second roller, and the first roller and the second roller are rotatably connected to the inner wall of the guide frame.
[0011] As a further embodiment of the present invention: a second sealing ring is fixed to one side of the outer wall of the second pressure plate, and a first sealing ring is fixed to one side of the outer wall of the support groove.
[0012] Based on the aforementioned scheme: the outer wall of the pusher is provided with a wear-resistant plate, the outer wall of the second pressure plate is fixed with a guide block, and the guide block is slidably connected to the inner wall of the guide frame.
[0013] Based on the aforementioned scheme, the preferred embodiment is as follows: a rubber block and a friction pad are fixed on the outer wall of the rotating plate, and arc-shaped grooves are opened on the inner walls of the upper and lower sides of the rectangular through hole.
[0014] A construction method for a concealed door structure with decorative finish includes the following steps: S1: The staff first inserts the entire mounting frame into the mounting slot, and then fixes the fixing plate to the inner wall of the mounting slot with bolts; S2: Insert the entire door panel into the inner wall of the mounting frame, and let a set of sliders on one side of the door panel insert into the corresponding connecting frames; S3: Rotate the entire rotating plate to fit against the inner wall of the rectangular through hole, thus sealing the rectangular through hole and completing the installation of the concealed door structure.
[0015] The beneficial effects of this invention are as follows: Driven by the reset mechanisms on both sides, the pusher moves towards the door panel, thereby causing the first pressure plate on the outer wall to squeeze the airbag. After being squeezed, the airbag fills the cylinder with gas from the inner wall, which in turn pushes the trapezoidal insert on one side of the cylinder output shaft forward until the trapezoidal insert is fully inserted into the inner wall of the slot. At this point, the entire door panel is fixed inside the mounting frame under the limit of the trapezoidal insert and the slot. At this point, there is no height difference between the mounting frame and the entire door panel and the outer wall of the decorative wall, and there are no gaps on the surface, which improves the overall smoothness of the outer wall of the decorative wall.
[0016] When the operator needs to open the door panel, they first push the rotating plate to rotate 90 degrees. This rotation pushes the push block on one side away from the door panel, causing the first pressure plate to inflate the airbag. The inflated airbag absorbs the gas inside the cylinder, causing the cylinder's output shaft to retract and the trapezoidal insert to leave the inner wall of the slot. The operator can then pull the rotating plate to remove the door panel from the mounting frame, allowing the corresponding fixtures installed in the mounting slot to be used. Users can simply rotate the rotating plate back and forth to open and close the door panel, improving the ease of use of the concealed door structure.
[0017] When the second pressure plate is pushed against one side of the support groove by the spring, the second sealing ring on the outer wall of the second pressure plate will abut against the first sealing ring on the outer wall of the support groove, thereby sealing the contact surface between the second pressure plate and the support groove. This allows the support groove to adsorb the second pressure plate through internal negative pressure, improving the overall stability of the push block.
[0018] The arc-shaped groove can guide the rotating plate that rotates inside the rectangular through hole. At the same time, the rubber block can increase the friction between the rotating plate and the arc-shaped groove when the rotating plate is blocked inside the rectangular through hole. Meanwhile, the workers can easily pull the door panel out of the installation frame by using the friction pad on the outer wall of the rotating plate.
[0019] When the push block moves back and forth under the drive of the spring and the rotating plate, it will drive the first and second rollers on the outer wall to roll back and forth on the inner wall of the guide frame, thereby guiding the push block when it moves back and forth and improving the stability of the push block when it moves back and forth. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the main structure of a concealed door structure with decorative finish proposed in this invention; Figure 2 This is a schematic diagram of the mounting frame structure for a concealed door structure with decorative finish proposed in this invention; Figure 3 This is a schematic diagram of the opening structure of the rotating plate of a concealed door structure with decorative finish proposed in this invention. Figure 4 This is a schematic diagram of a door panel structure for a concealed door with decorative finish proposed in this invention; Figure 5 This is a schematic diagram of a push block structure for a concealed door structure with a decorative finish, as proposed in this invention. Figure 6 This is a schematic diagram of the support groove structure of a decorative concealed door structure proposed in this invention; Figure 7 This is a schematic diagram of the second pressure plate structure of a decorative concealed door structure proposed in this invention.
[0021] In the diagram: 1. Mounting frame, 2. Decorative wall panel, 3. Door panel, 4. Rotating plate, 5. Connecting frame, 6. Reserved groove, 7. Mounting groove, 8. Fixing plate, 9. Rubber block, 10. Friction pad, 11. Connecting rod, 12. First air valve, 13. First pressure plate, 14. Push block, 15. Second pressure plate, 16. Guide frame, 17. Slider, 18. Second air valve, 19. Cylinder, 20. Trapezoidal insert, 21. Slot, 22. Airbag, 23. Spring, 24. Support groove, 25. First sealing ring, 26. Connecting block, 27. Rectangular through hole, 28. First roller, 29. Second sealing ring, 30. Wear-resistant sheet, 31. Clamping plate, 32. Second roller, 33. Guide block, 34. Arc groove, 35. Fixing hole. Detailed Implementation
[0022] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.
[0023] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Example
[0024] A concealed door structure with decorative finish and its construction method, such as Figure 1-7 As shown, the installation includes a mounting frame 1 inserted into the inner wall of the decorative wall 2. A set of connecting frames 5 is fixed to one outer wall of the mounting frame 1. A slider 17 is slidably connected to the inner wall of the connecting frame 5. A door panel 3 is fixed to one outer wall of the slider 17. The door panel 3 is inserted into the inner wall of the mounting frame 1. A rectangular through hole 27 is opened on one outer wall of the door panel 3. A connecting rod 11 is rotatably connected to the inner wall of the rectangular through hole 27 via a damping shaft. A rotating plate 4 is fixed to the outer wall of the connecting rod 11. A set of airbags 22 is fixed to the outer wall of the door panel 3. A first pressure plate 13 is fixed to the outer wall of the airbags 22. A push block 14 is fixed to the outer wall of the first pressure plate 13. A set of cylinders 19 is fixed to one side of the outer wall of the slider 17. A trapezoidal insert 20 is fixed to the output shaft of the cylinder 19. The outer walls of both sides of the connecting frame 5 are respectively provided with slots 21. A clamping plate 31 is fixed to one side of the outer wall of the slider 17. A second air valve 18 is provided on the outer wall of the clamping plate 31. The second air valve 18 is connected to the input end of the cylinder 19 through a pipeline. A first air valve 12 is provided on the outer wall of the first pressure plate 13. The first air valve 12 is connected to the airbag 22 through a pipeline. The first air valve 12 and the second air valve 18 are connected through an air supply pipeline. Pushing and resetting mechanisms are provided on both sides of the outer wall of the push block 14. The decorative wall 2 has an installation groove 7 and a reserved groove 6 on one side of its outer wall. A set of fixing plates 8 are fixed on one side of the outer wall of the mounting frame 1. Fixing holes 35 are opened on the outer wall of the fixing plates 8. The fixing plates 8 are fixed to the inner wall of the installation groove 7 by bolts. First, the worker inserts the entire mounting frame 1 into the mounting groove 7, and then fixes the fixing plate 8 to the inner wall of the mounting groove 7 with bolts. Next, the entire door panel 3 is inserted into the inner wall of the mounting frame 1, allowing a set of sliders 17 on one side of the door panel 3 to insert into their corresponding connecting frames 5. Then, the worker rotates the entire rotating plate 4, causing it to fit against the inner wall of the rectangular through hole 27, thus sealing the rectangular through hole 27. At this point, the outer wall of one side of the rotating plate 4 no longer presses against the push block 14. The push block 14, driven by the push and reset mechanisms on both sides, then moves towards the door panel 3... The side movement causes the first pressure plate 13 on the outer wall to squeeze the airbag 22. After the airbag 22 is squeezed, it will fill the cylinder 19 with gas from the inner wall, thereby pushing the trapezoidal insert 20 on one side of the output shaft of the cylinder 19 forward until the trapezoidal insert 20 is inserted into the inner wall of the slot 21. At this time, the door panel 3 can be fixed inside the mounting frame 1 under the limit of the trapezoidal insert 20 and the slot 21. At this time, there is no height difference between the mounting frame 1 and the door panel 3 and the outer wall of the decorative wall 2, and there are no gaps on the surface, which improves the overall smoothness of the outer wall of the decorative wall 2. When the staff needs to open the door panel 3, they first push the rotating plate 4 to rotate 90 degrees. This rotation pushes the push block 14 on one side away from the door panel 3, causing the first pressure plate 13 to pull the airbag 22 to inflate. After the airbag 22 inflates, it absorbs the gas inside the cylinder 19, thereby causing the output shaft of the cylinder 19 to retract and the trapezoidal insert 20 to leave the inner wall of the slot 21. Then, the staff can pull the rotating plate 4 to pull the door panel 3 out of the mounting frame 1. The corresponding facilities installed in the mounting slot 7 can then be used. Users only need to rotate the rotating plate 4 back and forth to open and close the door panel 3, improving the ease of use of the concealed door structure.
[0025] like Figure 4-7 As shown, the push reset mechanism includes a support groove 24, a spring 23, and a second pressure plate 15. The support groove 24 is disposed on one outer wall of the door panel 3, the spring 23 is fixed on the inner wall of the support groove 24, and the second pressure plate 15 is fixed on both outer walls of the push block 14. One outer wall of the spring 23 is fixed on the outer wall of the second pressure plate 15. When the rotating plate 4 rotates to a position flush with the rectangular through hole 27, the support on the push block 14 will be released. At this time, the second pressure plate 15 will move towards the door panel 3 under the elastic force of the spring 23, thereby driving the push block 14 to move towards one side of the door panel 3 after the rotating plate 4 seals the rectangular through hole 27.
[0026] like Figure 4-7As shown, a set of guide frames 16 is fixed to one side of the outer wall of the door panel 3, and a set of connecting blocks 26 is fixed to one side of the outer wall of the push block 14. The connecting blocks 26 and the outer wall of the push block 14 are rotatably connected to a first roller 28 and a second roller 32. The first roller 28 and the second roller 32 are rotatably connected to the inner wall of the guide frame 16. When the push block 14 moves back and forth under the drive of the spring 23 and the rotating plate 4, it will drive the first roller 28 and the second roller 32 on the outer wall to roll back and forth on the inner wall of the guide frame 16, thereby guiding the push block 14 when it moves back and forth and improving the stability of the push block 14 when it moves back and forth.
[0027] like Figure 5-6 As shown, a second sealing ring 29 is fixed to one side of the outer wall of the second pressure plate 15, and a first sealing ring 25 is fixed to one side of the outer wall of the support groove 24. When the second pressure plate 15 is pushed against the support groove 24 by the spring 23, the second sealing ring 29 on the outer wall of the second pressure plate 15 will abut against the first sealing ring 25 on the outer wall of the support groove 24, thereby sealing the contact surface between the second pressure plate 15 and the support groove 24, allowing the support groove 24 to adsorb the second pressure plate 15 through internal negative pressure, thereby improving the overall stability of the push block 14.
[0028] like Figure 7 As shown, the outer wall of the pusher block 14 is provided with a wear-resistant sheet 30, and the outer wall of the second pressure plate 15 is fixed with a guide block 33, which is slidably connected to the inner wall of the guide frame 16.
[0029] like Figure 3 As shown, a rubber block 9 and a friction pad 10 are fixed on the outer wall of the rotating plate 4. Arc grooves 34 are respectively opened on the inner walls of the upper and lower sides of the rectangular through hole 27. The arc grooves 34 can guide the rotating plate 4 rotating on the inner wall of the rectangular through hole 27. At the same time, the rubber block 9 can increase the friction between the rotating plate 4 and the arc groove 34 when it is blocked on the inner wall of the rectangular through hole 27. Meanwhile, the workers can easily pull the door panel 3 out of the installation frame 1 by using the friction pad 10 on the outer wall of the rotating plate 4.
[0030] In this embodiment, the operator first inserts the entire mounting frame 1 into the mounting groove 7, and then fixes the fixing plate 8 to the inner wall of the mounting groove 7 with bolts. Next, the entire door panel 3 is inserted into the inner wall of the mounting frame 1, allowing a set of sliders 17 on one side of the door panel 3 to be inserted into the corresponding connecting frame 5. Then, the operator rotates the entire rotating plate 4, causing it to fit against the inner wall of the rectangular through hole 27, thus sealing the rectangular through hole 27. At this point, the outer wall of one side of the rotating plate 4 no longer presses against the push block 14, and the push block 14 will push from both sides. Driven by the dynamic reset mechanism, the airbag 22 moves to the side of the door panel 3, thereby causing the first pressure plate 13 on the outer wall to squeeze the airbag 22. After being squeezed, the airbag 22 will fill the cylinder 19 with gas from the inner wall, thereby pushing the trapezoidal insert 20 on the output shaft side of the cylinder 19 forward until the trapezoidal insert 20 is fully inserted into the inner wall of the slot 21. At this time, the entire door panel 3 can be fixed inside the mounting frame 1 under the limit of the trapezoidal insert 20 and the slot 21. At this time, there is no height difference between the mounting frame 1 and the entire door panel 3 and the outer wall of the decorative wall 2, and there are no gaps on the surface.
[0031] When the staff needs to open the door panel 3, they first push the rotating plate 4 to rotate 90 degrees. This rotation pushes the push block 14 on one side away from the door panel 3, causing the first pressure plate 13 to pull the airbag 22 to inflate. After the airbag 22 inflates, it absorbs the gas inside the cylinder 19, thereby causing the output shaft of the cylinder 19 to retract and the trapezoidal insert 20 to leave the inner wall of the slot 21. Then, the staff can pull the rotating plate 4 to pull the door panel 3 out of the mounting frame 1. The corresponding facilities installed in the mounting slot 7 can then be used, allowing the user to simply rotate the rotating plate 4 back and forth to close and open the door panel 3. Example
[0032] A method for constructing a concealed door structure with decorative finish, such as Figure 1-7 As shown, it includes the following steps: S1: The staff first inserts the entire mounting frame 1 into the mounting slot 7, and then fixes the fixing plate 8 to the inner wall of the mounting slot 7 with bolts; S2: Insert the entire door panel 3 into the inner wall of the mounting frame 1, and let a set of sliders 17 on one side of the door panel 3 be inserted into the corresponding connecting frame 5 respectively; S3: Rotate the rotating plate 4 as a whole so that the rotating plate 4 fits against the inner wall of the rectangular through hole 27 to block and seal the rectangular through hole 27, thus completing the installation of the hidden door structure.
[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A concealed door structure with a decorative finish, comprising a mounting frame (1) inserted into the inner wall of a decorative wall (2), characterized in that, A set of connecting frames (5) is fixed to one side of the outer wall of the mounting frame (1). A slider (17) is slidably connected to the inner wall of the connecting frame (5). A door panel (3) is fixed to one side of the outer wall of the slider (17). The door panel (3) is inserted into the inner wall of the mounting frame (1). A rectangular through hole (27) is opened on one side of the outer wall of the door panel (3). A connecting rod (11) is rotatably connected to the inner wall of the rectangular through hole (27) through a damping shaft. A rotating plate (4) is fixed to the outer wall of the connecting rod (11). A set of airbags (22) is fixed to the outer wall of the door panel (3). A first pressure plate (13) is fixed on the outer wall, and a push block (14) is fixed on the outer wall of the first pressure plate (13). A set of cylinders (19) is fixed on one side of the outer wall of the slider (17). A trapezoidal insert (20) is fixed on the output shaft of the cylinder (19). Slots (21) are opened on both sides of the outer wall of the connecting frame (5). When the airbag (22) is squeezed, it will fill the cylinder (19) with gas from the inner wall, pushing the trapezoidal insert (20) on one side of the output shaft of the cylinder (19) to move forward until the trapezoidal insert (20) is inserted into the inner wall of the slot (21). When it is necessary to open the door panel (3), first push the rotating plate (4) to rotate 90 degrees. The rotating plate (4) pushes the push block (14) on one side away from the door panel (3). The first pressure plate (13) pulls the airbag (22) to expand. After the airbag (22) expands, it will absorb the gas inside the cylinder (19) and drive the output shaft of the cylinder (19) to retract, so that the trapezoidal insert (20) leaves the inner wall of the slot (21). Then, the rotating plate (4) can be pulled to pull the door panel (3) out from the inside of the mounting frame (1). The outer wall of the slider (17) is fixed with a clamp (31). The outer wall of the clamp (31) is provided with a second air valve (18). The second air valve (18) is connected to the input end of the cylinder (19) through a pipeline. The outer wall of the first pressure plate (13) is provided with a first air valve (12), the first air valve (12) is connected to the air bag (22) through a pipeline, the first air valve (12) and the second air valve (18) are connected through an air supply pipeline, and the outer walls on both sides of the push block (14) are provided with a push reset mechanism; The decorative wall (2) has an installation groove (7) and a reserved groove (6) on one side of its outer wall. A set of fixing plates (8) is fixed on one side of the outer wall of the mounting frame (1). Fixing holes (35) are opened on the outer wall of the fixing plates (8). The fixing plates (8) are fixed to the inner wall of the installation groove (7) by bolts.
2. The concealed door structure with decorative finish according to claim 1, characterized in that, The push reset mechanism includes a support groove (24), a spring (23), and a second pressure plate (15). The support groove (24) is located on one side of the outer wall of the door panel (3). The spring (23) is fixed on the inner wall of the support groove (24). The second pressure plate (15) is fixed on both sides of the outer wall of the push block (14). One side of the outer wall of the spring (23) is fixed on the outer wall of the second pressure plate (15).
3. The concealed door structure with decorative finish according to claim 2, characterized in that, A set of guide frames (16) is fixed on one side of the outer wall of the door panel (3), and a set of connecting blocks (26) is fixed on one side of the outer wall of the push block (14). The connecting blocks (26) and the outer walls of the push block (14) are rotatably connected to a first roller (28) and a second roller (32). The first roller (28) and the second roller (32) are rotatably connected to the inner wall of the guide frame (16).
4. The concealed door structure with decorative finish according to claim 2, characterized in that, A second sealing ring (29) is fixed on one side of the outer wall of the second pressure plate (15), and a first sealing ring (25) is fixed on one side of the outer wall of the support groove (24).
5. The concealed door structure with decorative finish according to claim 3, characterized in that, The outer wall of the pusher (14) is provided with a wear-resistant sheet (30), and the outer wall of the second pressure plate (15) is fixed with a guide block (33), which is slidably connected to the inner wall of the guide frame (16).
6. The concealed door structure with decorative finish according to claim 1, characterized in that, The outer wall of the rotating plate (4) is fixed with a rubber block (9) and a friction pad (10), and the inner walls of the upper and lower sides of the rectangular through hole (27) are respectively provided with arc grooves (34).
7. A construction method for a concealed door structure with decorative finish according to any one of claims 1-6, characterized in that, Includes the following steps: S1: The staff first inserts the entire mounting frame (1) into the mounting slot (7), and then fixes the fixing plate (8) to the inner wall of the mounting slot (7) with bolts; S2: Insert the entire door panel (3) into the inner wall of the mounting frame (1), and let a set of sliders (17) on one side of the door panel (3) be inserted into the corresponding connecting frame (5); S3: Rotate the rotating plate (4) as a whole so that the rotating plate (4) fits against the inner wall of the rectangular through hole (27) to block and seal the rectangular through hole (27), thus completing the installation of the hidden door structure.
Citation Information
Patent Citations
Double-veneer blank door system and installation method thereof
CN117127885A
Novel door handle
CN112324247A
Stone material hidden door
CN206928848U