A hyperbolic hidden door and method of installation

Abstract

This invention provides a hyperboloid concealed door and its installation method, belonging to the field of concealed door technology. The hyperboloid concealed sliding door includes a wall and a concealed door. Its features include: the concealed door is fixedly installed on the right wall via a damping hinge; an expansion fixing assembly is installed inside the left wall, which is fixedly connected to an air pump via a branch pipe and a main air pipe; a laser sensor for sensing the concealed door's reset is installed at the bottom of the left wall; a distance sensor for detecting the concealed door's deformation is installed on the wall; a touch-sensitive switch for sensing personnel touching and controlling the opening and closing of the concealed door is installed on the left wall; and a main control box is installed inside the wall, containing a control chip. This invention solves the problem of easy deformation after prolonged use, which obstructs the opening and closing of the concealed door.

Description

Technical Field

[0001] This invention belongs to the field of concealed door technology, specifically, it relates to a hyperboloid concealed door and its installation method. Background Technology

[0002] Hidden doors, also known as prefabricated doors, refer to doors where there are no gaps between the door and the door frame, thus creating an integrated effect between the door and the wall, achieving the goals of aesthetics, practicality, and hygiene.

[0003] Chinese invention patent (application number CN201910225745.0) with publication number CN109882028A discloses a hidden door frame, a hidden door system, and an installation method for the hidden door system. The system includes a hidden sub-frame consisting of a hidden sub-frame and a main door frame, and a door leaf. The profile of the hidden sub-frame includes opposing first and second mounting edges and a third mounting edge connecting the ends of the two mounting edges on the same side. The first, second, and third mounting edges define an internal space. The other end of the first mounting edge extends outward into a limited space. The main door frame is defined by a retaining edge, a first to third mounting edge, and a limiting retaining edge; the limiting retaining edge and the first mounting edge define the decorative finishing surface; the main door frame profile extends into a recessed cavity that conceals the limiting retaining edge; the above technical solution involves installing the main door frame and door leaf after the main decoration project is completed. During long-term use, the hidden door may be pushed open and in a semi-closed state. Over time, the hidden door will tilt due to its own weight, resulting in it not fitting properly with the door frame or even being unable to open or close. In this case, the hidden door needs to be replaced.

[0004] Furthermore, with the development and popularization of 3D printing technology, many large exhibition halls have facilitated the construction of curved walls. These walls require movable doors, and hidden doors, as a representative that can ensure both aesthetics and ease of opening and closing, should be the first choice. It is evident that existing hidden doors are prone to deformation after long-term use, which can obstruct the opening and closing of the hidden doors. Summary of the Invention

[0005] In view of this, the present invention provides a hyperboloid concealed door and an installation method that can solve the problem of easy deformation after long-term use, which leads to obstruction of the opening and closing of the concealed door.

[0006] This invention is implemented as follows:

[0007] This invention provides a hyperboloid concealed door, comprising a wall and a concealed door. The concealed door is fixedly installed in the right wall via a damping hinge. An expansion fixing assembly is disposed inside the left wall, and this assembly is fixedly connected to an air pump via a branch pipe and a main air pipe. A laser sensor for sensing the concealed door's reset is disposed at the bottom of the left wall. A distance measuring sensor for detecting the concealed door's deformation is disposed on the wall. A touch-sensitive switch for controlling the opening and closing of the concealed door is disposed on the left side of the wall. A main control box is disposed inside the wall, containing a control chip. The control chip includes a controller and a memory. The memory stores three program instructions... When the controller executes the program instructions, it is used to: control the air pump to inflate the airbag when the laser sensor detects that the hidden door has reset; control the solenoid valve and the exhaust fan to deflate the airbag when the touch sensor detects that someone is touching the hidden door and needs to open it; and control the air pump to inflate the corresponding airbag when the distance sensor detects that the hidden door has a different horizontal height and the hidden door has a tendency to deform, so as to ensure that the hidden door always remains in a horizontal state, provide support for the hidden door, and prevent the hidden door from deforming after long-term use. A reflective sheet is provided on the hidden door at the position corresponding to the laser sensor.

[0008] Based on the above technical solution, the hyperboloid concealed door of the present invention can be further improved as follows:

[0009] The damping hinges are arranged in two sets, one in the upper middle part and the other in the lower middle part of the right wall. Each damping hinge includes a butterfly end and an outer frame end. The butterfly end is fixedly connected to the hidden door by screws, and the outer frame end is fixedly connected to the wall by screws.

[0010] Furthermore, the expansion fixing assembly includes a mounting frame, an expansion airbag is provided inside the mounting frame, an air inlet channel and an air outlet channel are provided on the expansion airbag, a solenoid valve is provided on one side of the mounting frame, one end of the solenoid valve is fixedly connected to the air outlet channel on the expansion airbag, and an exhaust fan is provided on the other end of the solenoid valve.

[0011] Furthermore, this includes the following steps:

[0012] S10: Create a cavity along the left wall, and use a laser rangefinder to measure the internal dimensions of the cavity to obtain measurement data;

[0013] S20: Based on the measurement data, digital modeling is performed, and partitions and mounting slots that conform to the internal dimensions of the cavity are manufactured using a 3D printer;

[0014] S30: Fix the partition and mounting groove inside the wall cavity, and then fix the expansion fixing component at the corresponding position of the mounting groove;

[0015] S40: Connect the installed expansion fixing assembly to the air pump, build an exhaust system according to the location of the air outlet channel of the expansion fixing assembly, install the laser sensor, distance sensor, main control box and touch sensor switch on the wall, and use a level and laser distance meter to measure and mark the installation position of the damping hinge.

[0016] S50: Install the damping hinges and concealed door according to the marked installation positions;

[0017] S60: Test the opening and closing of the installed hidden door.

[0018] Furthermore, the specific steps for creating a cavity along the left wall and using a laser rangefinder to measure the internal dimensions of the cavity to obtain measurement data are as follows:

[0019] First, determine and mark the length and width of the wall cavity according to the dimensions of the installation frame. Then, use a cutting machine to cut the outside of the wall according to the markings. After the cavity is opened, use a laser rangefinder to measure the depth inside the cavity and the width at both ends to obtain the measurement data.

[0020] Furthermore, the specific steps for digitally modeling based on measurement data and then using a 3D printer to fabricate partitions and mounting slots that conform to the internal dimensions of the cavity are as follows:

[0021] Based on the measurement data, digital modeling software was used to model the partition and mounting groove. The wall thickness was set between 5 and 8 mm. The model file in CTB format was exported and printed using a 3D printer. After printing, the partition and mounting groove that conform to the internal dimensions of the cavity were obtained.

[0022] Furthermore, the specific steps for fixing the partition and mounting groove inside the wall cavity, and then fixing the expansion fixing component at the corresponding mounting groove position, are as follows:

[0023] Drill holes in the partition and mounting slot using drilling equipment, and fix the partition and mounting slot into the cavity with screws. Then fix the expansion fixing component in the corresponding mounting slot.

[0024] Furthermore, the specific steps for connecting the installed expansion fixing assembly to the air pump, constructing an exhaust system based on the location of the air outlet channel of the expansion fixing assembly, installing a laser sensor, a distance sensor, a main control box, and a touch-sensitive switch on the wall, and measuring and marking the installation position of the damping hinge using a level and a laser distance meter are as follows:

[0025] Connect the air intake channel of the inflatable airbag in the expansion and fixing assembly to the bronchus pipe. Then, connect all the bronchus pipes connected to the expansion and fixing assembly to multiple main air pipes and fix them to the air pump. This allows the air pump to ventilate each inflatable airbag through a separate air intake channel. Fix the air pump to the partition at the bottom of the cavity inside the wall to complete the construction of the air intake system. Then, install solenoid valves according to the positions of the air outlet channels on the inflatable airbags, and fix the other end of the solenoid valves to the exhaust fan to complete the construction of the exhaust system. Fix a laser sensor to the bottom of the slot in the cavity inside the left wall and fix three sets of distance sensors to the lower end of the top wall. Install the main control box in the mounting slot on the left wall and fix a touch sensor switch on the left wall. Use a level and a laser rangefinder to measure, determine, and mark the installation positions of the damping hinges on the wall.

[0026] Furthermore, the specific steps for fixing and installing the damping hinges and the concealed door according to the marked installation positions are as follows:

[0027] According to the marked installation location, drive expansion bolts into the wall, fix the outer frame end of the damping hinge to the expansion bolts on the wall with bolts, and then fix the butterfly end of the damping hinge to the hidden door to complete the installation of the hidden door.

[0028] Furthermore, when the distance sensor detects that the hidden door is deformed, and the height difference between the values ​​detected by the leftmost and rightmost distance sensors is greater than or equal to 8mm, the control chip inside the main control box controls the air pump to inflate the two expansion airbags in the upper part of the left wall. When the height difference detected between the distance sensors is less than or equal to 1mm, the air pump stops inflating.

[0029] Compared with existing technologies, the beneficial effects of the hyperboloid concealed door and its installation method provided by this invention are as follows: By setting an expansion fixing component, the concealed door is secured when closed, providing support and preventing deformation due to prolonged use. A damping hinge enables the concealed door to automatically close, preventing it from remaining in a semi-closed state for extended periods. A laser sensor, a distance sensor, a main control box, and a touch-sensitive switch are included. The control chip in the main control box contains a controller and a memory. Three program instructions are stored in the memory, and the controller executes these instructions to: inflate the expansion airbag when the laser sensor detects the concealed door has reset; deflate the expansion airbag when the touch-sensitive switch detects a person touching the concealed door and needs to open it; and inflate the corresponding expansion airbag when the distance sensor detects a difference in the horizontal height of the concealed door and a tendency for deformation. These measures ensure the concealed door remains horizontal, providing support and preventing deformation over time. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the wall structure for a hyperboloid concealed door;

[0032] Figure 2 This is a schematic diagram of a hyperboloid concealed door.

[0033] Figure 3 A schematic diagram of the internal wall structure of a hyperboloid concealed door;

[0034] Figure 4 for Figure 3 Enlarged view of Part A;

[0035] Figure 5 A schematic diagram of the expansion fixing component structure of a hyperboloid hidden door;

[0036] Figure 6 This is a flowchart illustrating the installation process of a hyperboloid concealed door.

[0037] The attached diagram lists the components represented by each number as follows:

[0038] 10. Wall; 11. Hidden door; 12. Damping hinge; 13. Expansion fixing assembly; 14. Bronchus pipe; 15. Air pump; 16. Laser sensor; 17. Distance sensor; 18. Mounting frame; 19. Inflatable airbag; 20. Solenoid valve; 21. Exhaust fan; 22. Main air pipe; 23. Main control box; 24. Touch sensor switch. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] like Figure 1-5The image shows an embodiment of a hyperboloid concealed door provided by the present invention. In this embodiment, it includes a wall 10 and a concealed door 11. The concealed door 11 is fixedly installed on the right wall 10 via a damping hinge 12. An expansion fixing assembly 13 is installed inside the left wall 10. The expansion fixing assembly 13 is fixedly connected to an air pump 15 via a branch pipe 14 and a main air pipe 22. A laser sensor 16 for sensing the resetting of the concealed door 11 is installed at the bottom of the left wall 10. A distance measuring sensor 17 for detecting the deformation of the concealed door 11 is installed on the wall 10. A touch-sensitive switch 24 for controlling the opening and closing of the concealed door 11 is installed on the left side of the wall 10. A main control box 23 is installed inside the wall 10, containing a control chip. The control chip includes a controller and a memory. The memory contains three program instructions. When the controller executes these instructions, it controls the air pump 15 to inflate the airbag 19 when the laser sensor 16 detects that the hidden door 11 has reset; it controls the solenoid valve 20 and the exhaust fan 21 to deflate the airbag 19 when the touch sensor switch 24 detects that someone is touching the hidden door 11 and needs to open it; and it controls the air pump 15 to inflate the corresponding airbag 19 when the distance sensor 17 detects that the hidden door 11 has a different horizontal height and that the hidden door 11 has a tendency to deform, thus ensuring that the hidden door 11 always remains horizontal and providing support for the hidden door 11 to prevent deformation after long-term use. A reflective sheet is provided on the hidden door 11 at the position corresponding to the laser sensor 16.

[0045] It should be noted that the damping hinge 12 uses a general-purpose spring-hydraulic hinge. Spring-hydraulic hinges typically consist of two parts: a base and a connecting plate. The base is the foundation for installing the spring-hydraulic hinge, and the connecting plate is the base for installing the door or window. The space between the base and the top plate contains a spring and a cylinder. When the door or window is mechanically opened, the spring drives the piston in the cylinder, which absorbs energy. Through a buffer controller, the opening and closing process of the door or window is controlled at an appropriate speed, achieving a slow or automatic closing effect.

[0046] It should be noted that the control chip used is model GD32F103RBT6, which can store more programs and data, and can process more data at once, thereby speeding up the controller's response speed and efficiency.

[0047] It should be noted that the laser sensor 16 can be a diffuse reflection type laser photoelectric sensor of model PZ-D41, which integrates the transmitter and receiver. The laser is emitted from the transmitter and projected onto the reflector on the hidden door 11. The reflector reflects the light beam back to the receiver. When the receiver detects the light reflected by the reflector, the laser sensor 16 generates a detection switch signal, which controls the inflation of the airbag 19 by connecting to the main control box 23.

[0048] In the above technical solution, there are two sets of damping hinges 12, which are respectively installed in the upper middle part and the lower middle part of the right wall 10. The damping hinge 12 includes a butterfly end and an outer frame end. The butterfly end is fixedly connected to the hidden door 11 by screws, and the outer frame end is fixedly connected to the wall 10 by screws.

[0049] Furthermore, in the above technical solution, the expansion fixing component 13 includes a mounting frame 18, an expansion airbag 19 is provided inside the mounting frame 18, an air inlet channel and an air outlet channel are provided on the expansion airbag 19, a solenoid valve 20 is provided on one side of the mounting frame 18, one end of the solenoid valve 20 is fixedly connected to the air outlet channel on the expansion airbag 19, and an exhaust fan 21 is provided on the other end of the solenoid valve 20.

[0050] like Figure 6 The above technical solution includes the following steps:

[0051] S10: A cavity is opened along the left wall 10, and the internal dimensions of the cavity are measured using a laser rangefinder to obtain measurement data;

[0052] S20: Based on the measurement data, digital modeling is performed, and partitions and mounting slots that conform to the internal dimensions of the cavity are manufactured using a 3D printer;

[0053] S30: Fix the partition and mounting groove inside the cavity of the wall 10, and then fix the expansion fixing component 13 in the corresponding position of the mounting groove;

[0054] S40: Connect the installed expansion fixing assembly 13 to the air pump 15, construct an exhaust system according to the position of the air outlet channel of the expansion fixing assembly 13, install the laser sensor 16, the distance sensor 17, the main control box 23 and the touch sensor switch 24 on the wall 10, and use a level and a laser distance meter to measure and mark the installation position of the damping hinge 12.

[0055] S50: Install the damping hinge 12 and the concealed door 11 according to the marked installation positions;

[0056] S60: Test the opening and closing of the installed hidden door 11.

[0057] It's important to note that 3D printing, also known as rapid prototyping, is an advanced technology for manufacturing parts and components. It's a manufacturing process that creates three-dimensional objects by rapidly stacking materials layer by layer. Based on computer-aided design models, 3D printing uses machining control technology to directly construct physical objects from digital models. Its basic principle is to use numerical control technology to build a 3D model layer by layer by moving physical materials. Available materials include plastics, metals, ceramics, fibers, and biomaterials.

[0058] 3D printing technology has the following advantages:

[0059] High production efficiency: Compared with traditional manufacturing processes, 3D printing technology can significantly shorten the production cycle and enable just-in-time production and customized production.

[0060] Low production cost: Compared with traditional manufacturing processes, 3D printing technology has a significant advantage in production cost because it can reduce labor costs, material waste, etc.

[0061] High production precision: 3D printing can produce very complex products with high precision and high quality manufacturing capabilities.

[0062] High production flexibility: 3D printing technology enables flexible production, including mass production and individual production, achieving customized production.

[0063] Wide range of production applications: 3D printing technology can produce objects of various shapes, sizes and materials, and is applicable to various fields such as aerospace, medical, art, and automotive.

[0064] Furthermore, in the above technical solution, a cavity is opened along the left wall 10, and a laser rangefinder is used to measure the internal dimensions of the cavity to obtain the measurement data. The specific steps are as follows:

[0065] First, determine and mark the length and width of the cavity in the wall 10 according to the dimensions of the mounting frame 18. Then, use a cutting machine to cut the outside of the wall 10 according to the markings. After the cavity is opened, use a laser rangefinder to measure the depth inside the cavity and the width at both ends to obtain the measurement data.

[0066] Furthermore, in the above technical solution, the specific steps for creating a digital model based on measurement data and then using a 3D printer to manufacture partitions and mounting slots that conform to the internal dimensions of the cavity are as follows:

[0067] Based on the measurement data, digital modeling software was used to model the partition and mounting groove. The wall thickness was set between 5 and 8 mm. The model file in CTB format was exported and printed using a 3D printer. After printing, the partition and mounting groove that conform to the internal dimensions of the cavity were obtained.

[0068] Furthermore, in the above technical solution, the specific steps for fixing the partition and mounting groove inside the cavity of the wall 10, and then fixing the expansion fixing component 13 at the corresponding mounting groove position, are as follows:

[0069] Drill holes in the partition and mounting slot using a drilling device, and fix the partition and mounting slot into the cavity with screws. Then fix the expansion fixing assembly 13 in the corresponding mounting slot.

[0070] Furthermore, in the above technical solution, the installed expansion fixing component 13 is connected to the air pump 15, an exhaust system is constructed according to the position of the air outlet channel of the expansion fixing component 13, and a laser sensor 16, a distance sensor 17, a main control box 23, and a touch sensor switch 24 are installed on the wall 10. The specific steps for measuring and marking the installation position of the damping hinge 12 using a level and a laser rangefinder are as follows:

[0071] Connect the air intake channel of the inflatable airbag 19 in the expansion fixing assembly 13 to the branch pipe 14, and then connect all the branch pipes 14 connected to the expansion fixing assembly 13 to multiple main air pipes 22 and fix them to the air pump 15, so that the air pump 15 can achieve the effect of ventilating each inflatable airbag 19 through an individual air intake channel. Fix the air pump 15 to the partition at the bottom of the cavity inside the wall 10 to complete the construction of the air intake system; then install the solenoid valve 20 according to the position of the air outlet channel on the inflatable airbag 19, and fix the other end of the solenoid valve 20 to the exhaust fan 21 to complete the construction of the exhaust system; fix the laser sensor 16 at the bottom of the mounting slot in the cavity of the left wall 10, and fix three sets of distance measuring sensors 17 at the lower end of the top wall 10; install the main control box 23 in the mounting slot of the left wall 10, and fix the touch sensor switch 24 on the left wall 10; use a level and a laser rangefinder to measure, determine and mark the installation position of the damping hinge 12 on the wall.

[0072] It should be noted that there are five sets of expansion fixing components 13 in the installation slot, and the main air pipe 22 is a silicone hose.

[0073] It should be noted that the ranging sensor 17 can be a laser ranging sensor of model LDS100B.

[0074] It should be noted that the touch sensor switch 24 can be a general-purpose embedded touch sensor switch.

[0075] Furthermore, in the above technical solution, the specific steps for fixing and installing the damping hinge 12 and the concealed door 11 according to the marked installation positions are as follows:

[0076] According to the marked installation position, drive expansion bolts into the wall, fix the outer frame end of the damping hinge 12 to the expansion bolts on the wall with bolts, and then fix the butterfly end of the damping hinge 12 to the hidden door 11 to complete the installation of the hidden door 11.

[0077] Furthermore, in the above technical solution, when the distance sensor 17 detects that the hidden door 11 is deformed, and the height difference between the values ​​detected by the leftmost distance sensor 17 and the rightmost distance sensor 17 is greater than or equal to 8mm, the control chip inside the main control box 23 controls the air pump 15 to inflate the two expansion airbags 19 in the upper part of the left wall 10. When the height difference detected between the distance sensors 17 is less than or equal to 1mm, the air pump 15 stops inflating.

[0078] It should be noted that the specific steps for testing the opening and closing of the installed hidden door 11 are as follows: Close the hidden door 11, ensure that the airbag can inflate and pop out normally. When a person touches the touch sensor switch 24, the inflated airbag 19 can deflate and retract through the solenoid valve 20 and the exhaust fan 21, ensuring that the hidden door 11 can be opened without jamming and can automatically reset through the damping hinge 12. Use a level measuring instrument to measure the top of the hidden door 11 to ensure that the hidden door 11 is in a horizontal state.

[0079] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A biplane invisible door comprising a wall (10) and an invisible door (11), characterized in that, The right wall body (10) is fixedly installed with the invisible door (11) through the damping hinge (12), the left wall body (10) is internally provided with the expansion fixing assembly (13), the expansion fixing assembly (13) is fixedly connected with the air pump (15) through the branch air pipe (14) and the main air pipe (22), the bottom of the left wall body (10) is provided with the laser sensor (16) for sensing the reset of the invisible door (11), the wall body (10) is provided with the distance measuring sensor (17) for detecting the deformation of the invisible door (11), the left side of the wall body (10) is provided with the touch sensing switch (24) for controlling the opening and closing of the invisible door (11), the wall body (10) is internally provided with the main control box (23), the main control box (23) is internally provided with the control chip, the control chip is provided with the controller and the memory, the memory has three program instructions, when the controller executes the program instructions, are respectively used for realizing when the laser sensor (16) detects that the invisible door (11) resets, controlling the air pump (15) to inflate the expansion air bag (19); when the touch sensing switch (24) senses that a person touches and needs to open the invisible door (11), the electromagnetic valve (20) and the exhaust fan (21) deflate the expansion air bag (19); and when the distance measuring sensor (17) detects that the invisible door (11) has different heights in the horizontal direction, the invisible door (11) has a deformation tendency, the air pump (15) inflates the corresponding expansion air bag (19), ensures that the invisible door (11) always maintains a horizontal state, provides support for the invisible door (11), prevents the invisible door (11) from deforming for a long time, the invisible door (11) is provided with a reflecting sheet at a position corresponding to the laser sensor (16); the number of the damping hinge (12) is two groups, which are respectively arranged in the upper half and the lower half of the right wall body (10), the damping hinge (12) includes a butterfly-shaped end and an outer frame end, the butterfly-shaped end is fixedly connected with the invisible door (11) through a screw, and the outer frame end is fixedly connected with the wall body (10) through a screw; the expansion fixing assembly (13) includes a mounting frame (18), the mounting frame (18) is internally provided with the expansion air bag (19), the expansion air bag (19) is provided with an air inlet channel and an air outlet channel, one side of the mounting frame (18) is provided with the electromagnetic valve (20), one end of the electromagnetic valve (20) is fixedly connected with the air outlet channel of the expansion air bag (19), and the other end of the electromagnetic valve (20) is provided with the exhaust fan (21).When the distance sensor (17) detects that the invisible door (11) is deformed, the leftmost distance sensor (17) and the rightmost distance sensor (17) detect the value height difference greater than or equal to 8mm, through the control chip inside the main control box (23) control air pump (15) to the left wall (10) in the upper two inflatable air bag (19) inflation, when the distance sensor (17) between the detection height difference is less than or equal to 1mm, air pump (15) stop inflation.

2. A method of installing a double-curved hidden door according to claim 1, characterized in that, The method comprises the following steps: S10: a cavity is opened along the left wall (10), a laser range finder is used to measure the internal size of the cavity, and measurement data is obtained; S20: digital modeling is performed according to the measurement data, and a partition plate and a mounting groove conforming to the internal size of the cavity are made by a 3D printer; S30: the partition plate and the mounting groove are fixedly installed inside the cavity of the wall (10), and an expansion fixing assembly (13) is fixedly installed in correspondence with the position of the mounting groove; S40: the installed expansion fixing assembly (13) is connected to an air pump (15), an exhaust system is constructed according to the position of the air outlet channel of the expansion fixing assembly (13), a laser sensor (16), a distance measuring sensor (17), a main control box (23) and a touch-sensitive switch (24) are installed on the wall (10), and the installation position of a damping hinge (12) is measured and marked by using a level and a laser range finder; S50: the damping hinge (12) and the invisible door (11) are fixedly installed according to the marked installation position; S60: the installed invisible door (11) is tested for opening and closing.

3. A method of installing a double-curved hidden door according to claim 2, characterized in that, The specific steps of opening the cavity along the left wall (10) and measuring the internal size of the cavity by using a laser range finder to obtain measurement data are as follows: first, the length and width of the cavity of the wall (10) are determined according to the size of the mounting frame (18) and are marked, the outside of the wall (10) is cut by using a cutting machine according to the marks, the depth and the width of the two ends inside the cavity are measured by using a laser range finder after the cavity is opened, and measurement data is obtained.

4. A method of installing a double-curved hidden door according to claim 3, characterized in that, The specific steps of digital modeling according to the measurement data and making the partition plate and the mounting groove conforming to the internal size of the cavity by using a 3D printer are as follows: the modeling of the partition plate and the mounting groove is performed by using a digital modeling software according to the measurement data, the wall thickness is set to be between 5-8mm, a model file in a ctb format is exported and is printed by a 3D printer, and the partition plate and the mounting groove conforming to the internal size of the cavity are obtained after the printing is completed.

5. A method of installing a double-curved hidden door according to claim 4, characterized in that, The specific steps of fixing and installing the partition plate and the mounting groove inside the cavity of the wall (10) and then fixing and installing the expansion fixing assembly (13) in correspondence with the position of the mounting groove are as follows: holes are drilled on the partition plate and the mounting groove by using a drilling device, the partition plate and the mounting groove are fixedly installed inside the cavity by using screws, and then the expansion fixing assembly (13) is fixedly installed in correspondence with the mounting groove.

6. A method of installing a double-curved hidden door according to claim 5, wherein, The installed expansion fixing assembly (13) is connected to the air pump (15), an exhaust system is constructed according to the position of the air outlet channel of the expansion fixing assembly (13), a laser sensor (16), a distance measuring sensor (17), a master control box (23) and a touch-sensitive switch (24) are installed on the wall (10), and the specific steps of measuring and marking the installation position of the damping hinge (12) using a level and a laser range finder are as follows: the air inlet channel of the expansion air bag (19) in the expansion fixing assembly (13) is connected to the branch air pipe (14), then all the branch air pipes (14) connected to the expansion fixing assembly (13) are connected to the main air pipe (22) and fixedly connected to the air pump (15), so that the air pump (15) can realize the ventilation effect of each expansion air bag (19) through a separate air inlet channel, the air pump (15) is fixedly installed on the partition plate at the bottom of the cavity in the wall (10), and the construction of the air inlet system is completed; then the electromagnetic valve (20) is installed according to the position of the air outlet channel on the expansion air bag (19), and the other end of the electromagnetic valve (20) is fixedly connected to the exhaust fan (21); the construction of the exhaust system is completed; the laser sensor (16) is fixedly installed at the bottom of the installation groove in the left wall (10), and three sets of distance measuring sensors (17) are fixedly installed at the lower end of the top wall (10); the master control box (23) is installed in the installation groove of the left wall (10), and the touch-sensitive switch (24) is fixedly installed on the left wall (10); the installation position of the damping hinge (12) on the wall is measured and marked using a level and a laser range finder.

7. A method of installing a double-curved hidden door according to claim 6, characterized in that, The specific steps of fixing and installing the damping hinge (12) and the invisible door (11) according to the marked installation position are as follows: expansion bushings are punched in the wall according to the marked installation position, the outer frame end of the damping hinge (12) is fixedly connected to the expansion bushings on the wall through bolts, and the butterfly-shaped end of the damping hinge (12) is fixedly connected to the invisible door (11), and the installation of the invisible door (11) is completed.

Images