An invisible door and a prefabricated wall

Abstract

The present invention provides a concealed door and a prefabricated wall. The concealed door includes a door frame, a door leaf, a first pivot connection member and a second pivot connection member. The door frame includes a top frame member and a bottom frame member. The top frame member includes a first top mounting plate which is located above the door opening and fixedly mounted on the inner surface of the decorative wall panel. The bottom frame member includes a first bottom mounting plate which is located below the door opening and fixedly mounted on the inner surface of the decorative wall panel. The first pivot connection member is connected between the first top mounting plate and the top surface of the door leaf, and the second pivot connection member is connected between the first bottom mounting plate and the bottom surface of the door leaf. When the door leaf is closed, the door leaf is located within the door opening, and the outer surface of the door leaf is flush with the outer surface of the wall. The first pivot connection member is hidden between the top surface of the door leaf and the upper surface of the door opening, and the second pivot connection member is hidden between the bottom surface of the door leaf and the lower surface of the door opening. The concealed door provided by the present invention can achieve simpler and more convenient installation and has a better hiding effect.

Description

Technical Field

[0001] The present application relates to the technical field of building decoration, and particularly relates to a concealed door and a prefabricated wall. Background Art

[0002] In recent years, the decoration of public areas has received increasing attention. The traditional pipe shaft doors and fire doors in public areas are very unsightly, affecting the visual effect of the decoration of public areas, and it is difficult to form an integral whole with the decorative wall, that is, it is difficult to achieve the effect of a concealed door.

[0003] In the prior art, a concealed door is installed on a wall to open or close a door opening on the wall. It cannot play the role of hiding the traditional pipe shaft doors and fire doors in public areas.

[0004] Therefore, the present application provides a concealed door that can form an integral whole with the decorative wall, hide the traditional pipe shaft doors and fire doors in public areas, and play a role in decorative beauty. Summary of the Invention

[0005] The purpose of the present application is to provide a concealed door and a prefabricated wall to solve or alleviate the problems existing in the above prior art.

[0006] To achieve the above purpose, the present application provides the following technical solutions:

[0007] In a first aspect, the present application provides a concealed door for installation at a door opening of a decorative wall panel, the decorative wall panel being installed on a wall. The concealed door includes a door frame, a door leaf, a first pivot connection member, and a second pivot connection member;

[0008] The door frame includes a top frame member and a bottom frame member. The top frame member includes a first top mounting plate located above the door opening and fixedly installed on the inner surface of the decorative wall panel. The bottom frame member includes a first bottom mounting plate located below the door opening and fixedly installed on the inner surface of the decorative wall panel;

[0009] The first pivot connection member includes a first inner connection member and a first outer connection member. The inner end of the first inner connection member is fixedly connected to the first top mounting plate. The outer end of the first inner connection member is pivotally connected to the inner end of the first outer connection member. The outer end of the first outer connection member is fixedly connected to the top surface of the door leaf. The lower surface of the first inner connection member is flush with or higher than the upper surface of the door opening. The first inner connection member is located above the second outer connection member;

[0010] The second pivot connecting member includes a second inner connecting member and a second outer connecting member. The inner end of the second inner connecting member is fixedly connected to the first bottom mounting plate. The outer end of the second inner connecting member is pivotally connected to the inner end of the second outer connecting member. The outer end of the second outer connecting member is fixedly connected to the bottom surface of the door leaf. The upper surface of the second inner connecting member is flush with or lower than the lower surface of the door opening. The second inner connecting member is located below the second outer connecting member.

[0011] When the door leaf is closed, the door leaf is located within the door opening, and the outer surface of the door leaf is flush with the outer surface of the wall. The first pivot connecting member is hidden between the top surface of the door leaf and the upper surface of the door opening. The second pivot connecting member is hidden between the bottom surface of the door leaf and the lower surface of the door opening.

[0012] In some alternative embodiments of the present application, the top frame further includes a top vertical plate and a top horizontal plate connected in an L shape. The top vertical plate is in contact with the inner surface of the decorative wall panel. The top horizontal plate is in contact with the upper surface of the door opening. The first top mounting plate is parallel to the top horizontal plate and is connected to the inner surface of the top vertical plate. The bottom frame includes a bottom vertical plate and a bottom horizontal plate connected in an L shape. The bottom vertical plate is in contact with the inner surface of the decorative wall panel. The bottom horizontal plate is in contact with the lower surface of the door opening. The first bottom mounting plate is parallel to the bottom horizontal plate and is connected to the inner surface of the bottom vertical plate. When the door leaf is closed, the first pivot connecting member is hidden between the top surface of the door leaf and the lower surface of the top horizontal plate. The second pivot connecting member is hidden between the bottom surface of the door leaf and the upper surface of the bottom horizontal plate.

[0013] In some alternative embodiments of the present application, the outer end face of the top horizontal plate is flush with the outer surface of the decorative wall panel, and the outer end face of the bottom horizontal plate is flush with the outer surface of the decorative wall panel.

[0014] In some alternative embodiments of the present application, the top border further includes a top prefabricated part and a second top mounting plate. The second top mounting plate is connected to the inner surface of the top vertical plate. The second top mounting plate is parallel to the first top mounting plate and is located below the first top mounting plate. The width of the second top mounting plate is smaller than the width of the first top mounting plate. The top prefabricated part includes a top insertion block and a top stop block connected in an L shape. The top insertion block is inserted into the gap between the first top mounting plate and the second top mounting plate. The top stop block abuts against the first top mounting plate. The first inner connecting piece is fixed to the lower surface of the top insertion block. The bottom border further includes a bottom prefabricated part and a second bottom mounting plate. The second bottom mounting plate is connected to the inner surface of the bottom vertical plate. The second bottom mounting plate is parallel to the first bottom mounting plate and is located above the first bottom mounting plate. The width of the second bottom mounting plate is smaller than the width of the first bottom mounting plate. The bottom prefabricated part includes a bottom insertion block and a bottom stop block connected in an L shape. The bottom insertion block is inserted into the gap between the first bottom mounting plate and the second bottom mounting plate. The bottom stop block abuts against the first bottom mounting plate. The second inner connecting piece is fixed to the upper surface of the bottom insertion block.

[0015] In some alternative embodiments of the present application, a plurality of first through holes are provided at the inner end of the first inner connecting piece. The first fastener passes through the first through holes and is connected to the first top mounting plate. A plurality of second through holes are provided at the inner end of the second inner connecting piece. The second fastener passes through the second through holes and is connected to the first bottom mounting plate.

[0016] In some alternative embodiments of the present application, a top sunk groove is provided on the lower surface of the first top mounting plate. A first connection hole corresponding to the first through hole is provided on the bottom wall of the top sunk groove. The first fastener passes through the first through hole and the first connection hole. A bottom sunk groove is provided on the lower surface of the first bottom mounting plate. A second connection hole corresponding to the second through hole is provided on the bottom wall of the bottom sunk groove. The second fastener passes through the second through hole and the second connection hole.

[0017] In some alternative embodiments of the present application, the door frame further includes two side borders. The two side borders, the top border and the bottom border are connected end to end to form the rectangular door frame. The two side borders are supported between the bottom border and the top border. The top border further includes a top insertion plate. The top insertion plate is parallel to the top vertical plate and is connected to the upper surface of the top horizontal plate. The top insertion plate is inserted into an upper slot formed on the upper surface of the door opening. The bottom border includes a bottom insertion plate. The bottom insertion plate is parallel to the bottom vertical plate and is connected to the lower surface of the bottom horizontal plate. The bottom insertion plate is inserted into a lower slot formed on the lower surface of the door opening.

[0018] In some alternative embodiments of the present application, the side frame includes a first side mounting plate, a second side mounting plate, a side insertion plate, and a side vertical plate and a side horizontal plate connected in an L shape. The side vertical plate is attached to the inner surface of the decorative wall panel, the side horizontal plate is attached to the side surface of the door opening, the side insertion plate is parallel to the side vertical plate and connected to the inner surface of the side horizontal plate, and the side insertion plate is inserted into a side slot formed on the side surface of the door opening. The first side mounting plate is parallel to the side horizontal plate and connected to the inner surface of the side vertical plate. The second side mounting plate is connected to the inner surface of the side vertical plate, the second side mounting plate is spaced and parallel to the first side mounting plate, and the width of the second side mounting plate is smaller than the width of the first side mounting plate. Wherein, both ends of the side vertical plate are respectively connected to the top vertical plate and the bottom vertical plate, both ends of the side horizontal plate are respectively connected to the top horizontal plate and the bottom horizontal plate, both ends of the first side mounting plate are respectively connected to the top first mounting plate and the bottom first mounting plate, and both ends of the second side mounting plate are respectively connected to the top second mounting plate and the bottom second mounting plate.

[0019] In some alternative embodiments of the present application, the door frame further includes a top square tube, a bottom square tube, and two side square tubes. The top square tube is located above the top first mounting plate and connected to the top first mounting plate, and the side surface of the top square tube is attached to the top vertical plate. The bottom square tube is located below the bottom first mounting plate and connected to the bottom first mounting plate, and the side surface of the bottom square tube is attached to the bottom vertical plate. The side square tubes are located outside the first side mounting plate and are respectively attached to the first side mounting plate and the side vertical plate. Both ends of the side square tubes respectively abut against the side surface of the top square tube and the side surface of the bottom square tube.

[0020] In some alternative embodiments of the present application, the first inner connector and the top first mounting plate are fixed below the top square tube by the same fastener. The second inner connector and the bottom first mounting plate are fixed above the bottom square tube by the same fastener.

[0021] In some alternative embodiments of the present application, the door frame further includes a top decorative strip, a bottom decorative strip, and two side decorative strips. A top groove is provided on the top decorative strip. The second top mounting plate is inserted into the top groove, and the top decorative strip is inserted into the gap between the first top mounting plate and the second top mounting plate. The lower surface of the top decorative strip is flush with the lower surface of the top cross plate. A bottom groove is provided on the bottom decorative strip. The second bottom mounting plate is inserted into the bottom groove, and the bottom decorative strip is inserted into the gap between the first bottom mounting plate and the second bottom mounting plate. The upper surface of the bottom decorative strip is flush with the upper surface of the bottom cross plate. A side groove is provided on the side decorative strip. The second side mounting plate is inserted into the side groove, and the side decorative strip is inserted into the gap between the first side mounting plate and the second side mounting plate. The inner surface of the side decorative strip is flush with the inner surface of the side cross plate. Wherein, the upper end surface of the side decorative strip abuts against the first top mounting plate, and the lower end surface abuts against the first bottom mounting plate.

[0022] In some alternative embodiments of the present application, the top decorative strip is docked with the first inner connecting member, and the lower surface of the top decorative strip is flush with the lower surface of the first inner connecting member. The bottom decorative strip is docked with the second inner connecting member, and the upper surface of the bottom decorative strip is flush with the upper surface of the second inner connecting member.

[0023] In some alternative embodiments of the present application, the first inner connecting member includes a first inner long plate and a first inner short plate connected in an L shape. The first outer connecting member includes a first outer long plate and a first outer short plate connected in an L shape. The first inner long plate is parallel to and fixedly connected to the first top mounting plate. The outer end of the first inner short plate is pivotally connected to the inner end of the first outer short plate. The first outer long plate is parallel to the top surface of the door leaf and fixedly connected to the top surface of the door leaf. When the door leaf is closed, the first inner long plate and the first outer long plate coincide, the first inner short plate and the first outer short plate coincide, and the first outer connecting member is located below the first inner connecting member.

[0024] In some alternative embodiments of the present application, the first outer connecting member is located within the area restricted by the top surface of the door leaf.

[0025] In some alternative embodiments of the present application, a third through hole is formed at the outer end of the first inner short plate. The third through hole is a stepped hole. A fourth through hole is formed at the inner end of the first outer short plate. The fourth through hole is a stepped hole. The door frame further includes a rotating shaft and two stop members respectively connected to both ends of the rotating shaft. The rotating shaft passes through the third through hole and the fourth through hole. One of the stop members is received in the large diameter portion of the third through hole, and the other stop member is received in the large diameter portion of the fourth through hole.

[0026] In some alternative embodiments of the present application, the structures of the first pivot connection member and the second pivot connection member are the same.

[0027] In some alternative embodiments of the present application, the door leaf is hollow. The door leaf includes a front plate, four side plates, and four reinforcing rib plates. The four side plates are sequentially connected end to end to form a rectangular frame, and the four side plates are respectively vertically connected to four side edges of the front plate. The four reinforcing rib plates are sequentially connected end to end to form a rectangular frame, and the four reinforcing rib plates are respectively vertically connected to the four side plates correspondingly.

[0028] In a second aspect, based on the above-mentioned invisible door, the present application further provides a prefabricated wall, including a wall body, a decorative wall panel, a keel, and the above-mentioned invisible door. The decorative wall panel is fixed on the keel, and the keel is fixed on the wall body; there is a gap between the decorative wall panel and the wall body to accommodate the door pocket.

[0029] Advantageous effects:

[0030] In the invisible door provided by the embodiments of the present application, first, the installation positions of the first pivot connection member and the second pivot connection member in the width direction of the door leaf can be adjusted according to needs, so as to adjust the position of the rotation axis in the width direction of the door leaf, and thus the opening angle of the door leaf can be adjusted according to needs. For example, in the width direction of the door leaf, when the rotation axis is located in the middle and near the end of the door leaf, the door leaf can be opened by about 160°. At the same time, the part rotated to the inner side of the decorative wall panel will not occupy too much space in the door opening and does not affect people passing through the door opening. Second, the door leaf rotates by being rotationally connected to the top border and the bottom border of the door pocket, and the first top mounting plate and the second top mounting plate are located on the inner surface of the decorative wall panel, rather than being fixed in the door opening as in the traditional door pocket. Therefore, the installation of the door pocket in the present application is simpler and more convenient, and the hiding effect is better; finally, by installing the invisible door on the decorative wall panel to form an integral whole with the decorative wall panel, and corresponding the invisible door with the fire door or the pipe well door on the wall body, the fire door or the pipe well door can be hidden when not in use. When in need of use, only the invisible door needs to be opened, and the fire door or the pipe well door can be exposed, which not only improves the aesthetics but also is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The schematic diagrams in the specification forming a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. Among them:

[0032] Figure 1 is a three-dimensional schematic diagram of a closed state of an invisible door provided by an embodiment of the present application installed on a decorative wall panel;

[0033] Figure 2A three-dimensional schematic diagram of an assembled wall provided by an embodiment of the present application, which shows a three-dimensional schematic diagram of the invisible door in the open state;

[0034] Figure 3 A partial three-dimensional view of the vicinity of the first pivot connection when an invisible door provided by an embodiment of the present application is installed on a decorative wall panel;

[0035] Figure 4 A partial three-dimensional view of another perspective of the vicinity of the first pivot connection when an invisible door provided by an embodiment of the present application is installed on a decorative wall panel;

[0036] Figure 5 A partial three-dimensional view of the vicinity of the second pivot connection when an invisible door provided by an embodiment of the present application is installed on a decorative wall panel;

[0037] Figure 6 A cross-sectional schematic diagram of the top frame of an invisible door provided by an embodiment of the present application;

[0038] Figure 7 A cross-sectional schematic diagram of the top prefabricated part when an invisible door provided by an embodiment of the present application is installed on a decorative wall panel;

[0039] Figure 8 A cross-sectional schematic diagram of the top decorative strip when an invisible door provided by an embodiment of the present application is installed on a decorative wall panel;

[0040] Figure 9 A cross-sectional schematic diagram of the bottom frame of an invisible door provided by an embodiment of the present application;

[0041] Figure 10 A cross-sectional schematic diagram of the bottom prefabricated part when an invisible door provided by an embodiment of the present application is installed on a decorative wall panel;

[0042] Figure 11 A cross-sectional schematic diagram of the bottom decorative strip when an invisible door provided by an embodiment of the present application is installed on a decorative wall panel;

[0043] Figure 12 A cross-sectional schematic diagram of the side frame of an invisible door provided by an embodiment of the present application;

[0044] Figure 13 A cross-sectional schematic diagram of the side decorative strip when an invisible door provided by an embodiment of the present application is installed on a decorative wall panel.

[0045] Explanation of reference numerals:

[0046] 01 - Wall, 011 - Pipe shaft door, 02 - Decorative wall panel, 021 - Door opening, 03 - Keel;

[0047] 10 - Door leaf, 101 - Front plate, 102 - Side plate, 103 - Reinforcing rib plate;

[0048] 21 - Top first mounting plate, 211 - Top sinking groove, 22 - Top second mounting plate, 23 - Top vertical plate, 24 - Top horizontal plate, 25 - Top inserting plate, 26 - Top prefabricated part;

[0049] 31 - Bottom first mounting plate, 311 - Bottom sinking groove, 32 - Bottom second mounting plate, 33 - Bottom vertical plate, 34 - Bottom horizontal plate, 35 - Bottom inserting plate, 36 - Bottom prefabricated part;

[0050] 41 - Side first mounting plate, 42 - Side second mounting plate, 43 - Side vertical plate, 44 - Side horizontal plate, 45 - Side inserting plate; 51 - Top square tube, 52 - Bottom square tube, 53 - Side square tube;

[0051] 61 - Top decorative strip, 62 - Bottom decorative strip, 63 - Side decorative strip;

[0052] 71 - First pivot connection member, 711 - First inner connection member, 712 - First outer connection member, 72 - Second pivot connection member;

[0053] 81 - First fastener, 82 - Second fastener, 83 - Third fastener. Detailed implementation manner

[0054] The present application will be described in detail below with reference to the drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present application rather than a limitation of the present application. In fact, those skilled in the art will appreciate that modifications and variations can be made to the present application without departing from the scope or spirit thereof. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Accordingly, it is intended that the present application cover such modifications and variations as fall within the scope of the appended claims and their equivalents.

[0055] In the description of the present application, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application rather than requiring the present application to be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present application. The terms "connected", "connected to", "disposed" used in the present application should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate member; for those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0056] In a first aspect, the invisible door provided by the present application is used to be installed at the door opening 021 of the decorative wall panel 02, and the decorative wall panel 02 is installed on the wall body 01. Refer to Figures 1 to 11 , the invisible door includes a door frame, a door leaf 10, a first pivot connection member 71 and a second pivot connection member 72. The door frame includes a top frame and a bottom frame. The top frame includes a top first mounting plate 21, and the top first mounting plate 21 is located above the door opening 021 and fixedly installed on the inner surface of the decorative wall panel 02. The bottom frame includes a bottom first mounting plate 31, and the bottom first mounting plate 31 is located below the door opening 021 and fixedly installed on the inner surface of the decorative wall panel 02. The first pivot connection member 71 includes a first inner connection member 711 and a first outer connection member 712. The inner end of the first inner connection member 711 is fixedly connected to the top first mounting plate 21, the outer end of the first inner connection member 711 is pivotally connected to the inner end of the first outer connection member 712, and the outer end of the first outer connection member 712 is fixedly connected to the top surface of the door leaf 10. The lower surface of the first inner connection member 711 is flush with or higher than the upper surface of the door opening 021, and the first inner connection member 711 is located above the second outer connection member. The second pivot connection member 72 includes a second inner connection member and a second outer connection member. The inner end of the second inner connection member is fixedly connected to the bottom first mounting plate 31, the outer end of the second inner connection member is pivotally connected to the inner end of the second outer connection member, and the outer end of the second outer connection member is fixedly connected to the bottom surface of the door leaf 10. The upper surface of the second inner connection member is flush with or lower than the lower surface of the door opening 021, and the second inner connection member is located below the second outer connection member. When the door leaf 10 is closed, the door leaf 10 is located in the door opening 021, and the outer surface of the door leaf 10 is flush with the outer surface of the wall body. The first pivot connection member 71 is hidden between the top surface of the door leaf 10 and the upper surface of the door opening 021, and the second pivot connection member 72 is hidden between the bottom surface of the door leaf 10 and the lower surface of the door opening 021.

[0057] In the case of adopting the above technical solution, it is well-known that the first pivot axis of the pivotal connection between the first inner connection member 711 and the first outer connection member 712, and the second pivot axis of the pivotal connection between the second inner connection member and the second outer connection member must be collinear, that is, located on the same rotation axis, and the door leaf 10 can rotate around this rotation axis to realize opening and closing.

[0058] Among them, the first inner connecting member 711 is located above the second outer connecting member and is rotatably connected to the second outer connecting member. The first inner connecting member 711 is always fixed on the top first mounting plate 21 and does not extend to the outside of the decorative wall panel 02. When the door leaf 10 is opened, the outer end of the first outer connecting member 712 rotates with the door leaf 10 to the outside of the decorative wall panel 02. When the door leaf 10 is closed, the outer end of the first outer connecting member 712 rotates with the door leaf 10 into the door opening 021. The first outer connecting member 712 is located below the first inner connecting member 711 and is hidden between the top surface of the door leaf 10 and the upper surface of the door opening 021. Here, the first pivot axis can pass through the top surface of the door leaf 10. In this case, the gap between the top surface of the door leaf 10 and the upper surface of the door opening 021 needs to be able to accommodate the thickness of the first inner connecting member 711 and the first outer connecting member 712 stacked together. Or, the first pivot axis can also be located inside the door leaf 10. In this case, the gap between the top surface of the door leaf 10 and the upper surface of the door opening 021 only needs to be able to accommodate the thickness of the first outer connecting member 712.

[0059] Similarly, the second inner connecting member is located above the second outer connecting member and is rotatably connected to the second outer connecting member. The second inner connecting member is always fixed on the top second mounting plate 22 and does not extend to the outside of the decorative wall panel 02. When the door leaf 10 is opened, the outer end of the second outer connecting member rotates with the door leaf 10 to the outside of the decorative wall panel 02. When the door leaf 10 is closed, the outer end of the second outer connecting member rotates with the door leaf 10 into the door opening 021. The second outer connecting member is located below the second inner connecting member and is hidden between the bottom surface of the door leaf 10 and the lower surface of the door opening 021. Here, the second pivot axis can pass through the top surface of the door leaf 10. In this case, the gap between the bottom surface of the door leaf 10 and the lower surface of the door opening 021 needs to be able to accommodate the thickness of the second inner connecting member and the second outer connecting member stacked together. Or, the second pivot axis can also be located inside the door leaf 10. In this case, the gap between the bottom surface of the door leaf 10 and the lower surface of the door opening 021 only needs to be able to accommodate the thickness of the second outer connecting member.

[0060] As can be seen from the above, first, the installation positions of the first pivot connecting member 71 and the second pivot connecting member 72 in the width direction of the door leaf 10 can be adjusted as needed, so as to adjust the position of the rotation axis in the width direction of the door leaf 10, and thus the opening angle of the door leaf 10 can be adjusted as needed. For example, as Figure 2 and 3, in the width direction of the door leaf 10, the rotation axis is located in the middle of the door leaf 10 and close to the end position. The door leaf 10 can be opened about 160°. At the same time, the part rotated to the inner side of the decorative wall panel 02 will not occupy too much space of the door opening 021 in the width direction, and does not affect people passing through the door opening 021. Secondly, the door leaf 10 is rotated by being rotationally connected to the top and bottom frames of the door pocket, and the top first mounting plate 21 and the top second mounting plate 22 are located on the inner surface of the decorative wall panel 02, rather than being fixed in the door opening 021 like a traditional door pocket. Therefore, in this application, the installation of the door pocket is simpler and more convenient, and the hiding effect is better; finally, by installing a hidden door on the decorative wall panel 02, the hidden door and the decorative wall panel 02 form an integral body. By corresponding the hidden door with the fire door or the pipe shaft door 011 on the wall, the fire door or the pipe shaft door 011 can be hidden when not in use. When in need of use, only need to open the hidden door, and the fire door or the pipe shaft door 011 can be exposed, which not only improves the aesthetics but also is convenient to use.

[0061] In addition, in this application, the "inner and outer" directions are defined based on the relative positions of the decorative wall panel 02 and the wall body 01, and the wall body 01 is located inside the decorative wall panel 02. The "up and down" directions and the "top and bottom" directions are the same, and are both defined based on the relative positions of the first pivot connection member 71 and the second pivot connection member 72. The first pivot connection member 71 is located above or at the top of the second pivot connection member 72. The width direction of the door leaf 10 is perpendicular to the above-mentioned rotation axis. The width direction of the door opening 021 is perpendicular to the above-mentioned rotation axis.

[0062] In a possible implementation manner, the top frame further includes a top vertical plate 23 and a top horizontal plate 24 connected in an L shape. The top vertical plate 23 is attached to the inner surface of the decorative wall panel 02, the top horizontal plate 24 is attached to the upper surface of the door opening 021, and the top first mounting plate 21 is parallel to the top horizontal plate 24 and connected to the inner surface of the top vertical plate 23; the bottom frame includes a bottom vertical plate 33 and a bottom horizontal plate 34 connected in an L shape. The bottom vertical plate 33 is attached to the inner surface of the decorative wall panel 02, the bottom horizontal plate 34 is attached to the lower surface of the door opening 021, and the bottom first mounting plate 31 is parallel to the bottom horizontal plate 34 and connected to the inner surface of the bottom vertical plate 33; when the door leaf 10 is closed, the first pivot connection member 71 is hidden between the top surface of the door leaf 10 and the lower surface of the top horizontal plate 24, and the second pivot connection member 72 is hidden between the bottom surface of the door leaf 10 and the upper surface of the bottom horizontal plate 34.

[0063] In the case of adopting the above technical solution, making the top vertical plate 23 fit with the inner surface of the decorative wall panel 02 and connecting the first top mounting plate 21 to the top vertical plate 23 can facilitate the fixing of the top border. For example, the top vertical plate 23 can be fixedly connected to the decorative wall panel 02, thereby realizing the fixing of the top border; making the top horizontal plate 24 fit with the upper surface of the door opening 021 can achieve the covering of the upper surface of the door opening 021, playing a role in protecting the decorative wall panel 02 from insects and moisture; and connecting the top horizontal plate 24 and the top vertical plate 23 in an L shape as a whole not only facilitates the installation of the top border but also the positioning of the top border, that is: during installation, making the top vertical plate 23 fit with the inner surface of the decorative wall panel 02 and the top horizontal plate 24 fit with the upper surface of the door opening 021 realizes the positioning of the top border relative to the decorative wall panel 02.

[0064] Similarly, making the bottom vertical plate 33 fit with the inner surface of the decorative wall panel 02 and connecting the first bottom mounting plate 31 to the bottom vertical plate 33 can facilitate the fixing of the bottom border. For example, the bottom vertical plate 33 can be fixedly connected to the decorative wall panel 02, thereby realizing the fixing of the bottom border; making the bottom horizontal plate 34 fit with the upper surface of the door opening 021 can achieve the covering of the upper surface of the door opening 021, playing a role in protecting the decorative wall panel 02 from insects and moisture; and connecting the bottom horizontal plate 34 and the bottom vertical plate 33 in an L shape as a whole not only facilitates the installation of the bottom border but also the positioning of the bottom border, that is: during installation, making the bottom vertical plate 33 fit with the inner surface of the decorative wall panel 02 and the bottom horizontal plate 34 fit with the lower surface of the door opening 021 realizes the positioning of the bottom border relative to the decorative wall panel 02.

[0065] In a possible embodiment, the outer end face of the top horizontal plate 24 is flush with the outer surface of the decorative wall panel 02, and the outer end face of the bottom horizontal plate 34 is flush with the outer surface of the decorative wall panel 02. In this way, the integrity of the door leaf 10 and the decorative wall panel 02 can be improved.

[0066] In a possible embodiment, referring to Figure 3 and Figure 7 as shown, the top border further includes a top prefabricated part 26 and a second top mounting plate 22. The second top mounting plate 22 is connected to the inner surface of the top vertical plate 23. The second top mounting plate 22 is parallel to the first top mounting plate 21 and is located below the first top mounting plate 21. The width of the second top mounting plate 22 is smaller than the width of the first top mounting plate 21; the top prefabricated part 26 includes a top insertion block and a top stop block connected in an L shape. The top insertion block is inserted into the gap between the first top mounting plate 21 and the second top mounting plate 22, the top stop block abuts against the first top mounting plate 21, and the first inner connecting piece 711 is fixed on the lower surface of the top insertion block;

[0067] Referring to Figure 5 and Figure 10As shown, the bottom border further includes a bottom prefabricated part 36 and a second bottom mounting plate 32. The second bottom mounting plate 32 is connected to the inner surface of the bottom vertical plate 33. The second bottom mounting plate 32 is parallel to the first bottom mounting plate 31 and is located above the first bottom mounting plate 31. The width of the second bottom mounting plate 32 is smaller than that of the first bottom mounting plate 31. The bottom prefabricated part 36 includes a bottom insertion block and a bottom stop block connected in an L shape. The bottom insertion block is inserted into the gap between the first bottom mounting plate 31 and the second bottom mounting plate 32. The bottom stop block abuts against the first bottom mounting plate 31. The second inner connecting piece is fixed on the upper surface of the bottom insertion block.

[0068] In the case of adopting the above technical solution, the cooperation between the first top mounting plate 21 and the second top mounting plate 22 can realize the limitation of the top prefabricated part 26, which is convenient for fixing the first inner connecting piece 711 on the lower surface of the top insertion block. After the top prefabricated part 26 and the first top mounting plate 21 are stacked together, they have a relatively large thickness, which is beneficial to stably installing the first inner connecting piece 711 on the first top mounting plate 21 through fasteners such as bolts. Moreover, the position of the first inner connecting piece 711 in the up-and-down direction can also be adjusted by adjusting the thickness of the top prefabricated part 26, so as to cooperate with the first outer connecting piece 712, enabling the first outer connecting piece 712 to be hidden in the gap between the door leaf 10 and the door opening 021.

[0069] Similarly, the cooperation between the first bottom mounting plate 31 and the second bottom mounting plate 32 can realize the limitation of the bottom prefabricated part 36, which is convenient for fixing the first inner connecting piece 711 on the lower surface of the bottom insertion block. After the bottom prefabricated part 36 and the first bottom mounting plate 31 are stacked together, they have a relatively large thickness, which is beneficial to stably installing the first inner connecting piece 711 on the first bottom mounting plate 31 through fasteners such as bolts. Moreover, the position of the first inner connecting piece 711 in the up-and-down direction can also be adjusted by adjusting the thickness of the bottom prefabricated part 36, so as to cooperate with the first outer connecting piece 712, enabling the first outer connecting piece 712 to be hidden in the gap between the door leaf 10 and the door opening 021.

[0070] In addition, referring to Figures 3 to 7 , since there is also a second top mounting plate 22 below the top prefabricated part 26, and the first inner connecting piece 711 is to be connected below the top prefabricated part 26 and is to be located below the top horizontal plate 24 in order to pivotally connect with the first outer connecting piece 712. Therefore, a top protrusion can be formed on the lower surface of the top insertion block of the top prefabricated part 26 to ensure that after the first inner connecting piece 711 is connected to the lower surface of the top prefabricated part 26, it can be located below the top horizontal plate 24. Of course, a gasket can also be used, and the gasket is clamped between the top prefabricated part 26 and the first inner connecting piece 711 to ensure that the first inner connecting piece 711 is located below the top horizontal plate 24. Similarly, referring to Figure 10 , the same method can also be adopted at the bottom prefabricated part 26 to make the second inner connecting piece 721 located above the bottom horizontal plate 34.

[0071] In a possible embodiment, with reference to Figure 4 and Figure 5 as shown, a plurality of first through holes are provided at the inner end of the first inner connecting member 711, and the first fastener 81 passes through the first through holes to be connected to the top first mounting plate 21; a plurality of second through holes are provided at the inner end of the second inner connecting member, and the second fastener 82 passes through the second through holes to be connected to the bottom first mounting plate 31. Among them, the first fastener 81 can be a flat head screw. When on the top prefabricated member 26 as described above, the first fastener 81 also needs to pass through the top prefabricated member 26 to be connected to the top first mounting plate 21; the second fastener 82 can be a flat head screw. When on the bottom prefabricated member 36 as described above, the second fastener 82 also needs to pass through the bottom prefabricated member 36 to be connected to the bottom first mounting plate 31.

[0072] In an example, with reference to Figure 6 and Figure 9 as shown, a top sink 211 is provided on the lower surface of the top first mounting plate 21, and a first connection hole corresponding to the first through hole is provided on the bottom wall of the top sink 211, and the first fastener 81 passes through the first through hole and the first connection hole; a bottom sink 311 is provided on the lower surface of the bottom first mounting plate 31, and a second connection hole corresponding to the second through hole is provided on the bottom wall of the bottom sink 311, and the second fastener 82 passes through the second through hole and the second connection hole. In the case of adopting this technical solution, the first connection hole is located in the top sink 211, and the top sink 211 can play a role in guiding the first fastener 81 to pass through the first connection hole, improving convenience; similarly, the second connection hole is located in the bottom sink 311, and the bottom sink 311 can play a role in guiding the second fastener 82 to pass through the second connection hole. Among them, the top sink 211 and the bottom sink 311 can both be V-shaped grooves, which can play a good guiding role on the premise of ensuring the structural strength of the top first mounting plate 21 and the bottom first mounting plate 31.

[0073] In a possible embodiment, with reference to Figure 5 , Figures 8 to 13 , the door frame further includes two side frames. The two side frames, the top frame and the bottom frame are connected end to end to form a rectangular door frame, and the two side frames are supported between the bottom frame and the top frame; the top frame further includes a top insertion plate 25. The top insertion plate 25 is parallel to the top vertical plate 23 and is connected to the upper surface of the top horizontal plate 24, and the top insertion plate 25 is inserted into an upper slot formed on the upper surface of the door opening 021; the bottom frame includes a bottom insertion plate 35. The bottom insertion plate 35 is parallel to the bottom vertical plate 33 and is connected to the lower surface of the bottom horizontal plate 34, and the bottom insertion plate 35 is inserted into a lower slot formed on the lower surface of the door opening 021.

[0074] In the case of adopting the above technical solution, based on the side frame being supported between the bottom frame and the top frame, the top inserting plate 25 can be used to position the top frame on the decorative wall panel 02, and the bottom inserting plate 35 can be used to position the bottom frame on the decorative wall panel 02. Thus, the door pocket can be clamped on the decorative wall panel 02 without using fasteners or connectors, realizing the installation and positioning of the door pocket. While simplifying the structure, the installation is more convenient.

[0075] In a possible implementation manner, referring to Figure 12 and Figure 13 As shown, the side frame includes a side one mounting plate 41, a side two mounting plate 42, a side inserting plate 45, and a side vertical plate 43 and a side horizontal plate 44 connected in an L shape. The side vertical plate 43 is attached to the inner surface of the decorative wall panel 02, the side horizontal plate 44 is attached to the side surface of the door opening 021, the side inserting plate 45 is parallel to the side vertical plate 43 and connected to the inner surface of the side horizontal plate 44, and the side inserting plate 45 is inserted into a side slot formed on the side surface of the door opening 021. The side one mounting plate 41 is parallel to the side horizontal plate 44 and connected to the inner surface of the side vertical plate 43; the side two mounting plate 42 is connected to the inner surface of the side vertical plate 43, the side two mounting plate 42 is spaced and parallel to the side one mounting plate 41, and the width of the side two mounting plate 42 is smaller than the width of the side one mounting plate 41; wherein, both ends of the side vertical plate 43 are respectively connected to the top vertical plate 23 and the bottom vertical plate 33, both ends of the side horizontal plate 44 are respectively connected to the top horizontal plate 24 and the bottom horizontal plate 34, both ends of the side one mounting plate 41 are respectively connected to the top one mounting plate 21 and the bottom one mounting plate 31, and both ends of the side two mounting plate 42 are respectively connected to the top two mounting plate 22 and the bottom two mounting plate 32.

[0076] In the case of adopting the above technical solution, on the one hand, connecting the side horizontal plate 44 and the side vertical plate 43 in an L shape as a whole can facilitate the positioning of the side frame, that is: during installation, making the side vertical plate 43 attached to the inner surface of the decorative wall panel 02 and the side horizontal plate 44 attached to the upper surface of the door opening 021 realizes the positioning of the side frame relative to the decorative wall panel 02. At the same time, making the side horizontal plate 44 attached to the side surface of the door opening 021 to cover the side surface of the door opening 021 can play a role in protecting the decorative wall panel 02 from insects and moisture. At the same time, the connected side horizontal plate 44, top horizontal plate 24, and bottom horizontal plate 34 cover the inner surface of the door opening 021, improving the aesthetics; on the other hand, the side inserting plate 45 can be used to position the side frame on the decorative wall panel 02, reducing the risk of warping of the side frame that plays a load-bearing role; on the third hand, making both ends of the side one mounting plate 41 respectively connected to the top one mounting plate 21 and the bottom one mounting plate 31, and making both ends of the side two mounting plate 42 respectively connected to the top two mounting plate 22 and the bottom two mounting plate 32 can improve the supporting ability of the side frame.

[0077] In a possible embodiment, referring to Figure 8 、 Figure 11 andFigure 13 The door pocket further includes a top square pipe 51, a bottom square pipe 52 and two side square pipes 53. The top square pipe 51 is located above the top first mounting plate 21 and is connected to the top first mounting plate 21. The side surface of the top square pipe 51 is in contact with the top vertical plate 23. The bottom square pipe 52 is located below the bottom first mounting plate 31 and is connected to the bottom first mounting plate 31. The side surface of the bottom square pipe 52 is in contact with the bottom vertical plate 33. The side square pipes 53 are located outside the side first mounting plates 41 and are respectively in contact with the side first mounting plates 41 and the side vertical plates 43. The two ends of the side square pipes 53 respectively abut against the side surfaces of the top square pipe 51 and the bottom square pipe 52.

[0078] In the case of adopting the above technical solution, the two ends of the side square pipes 53 respectively abut against the side surfaces of the top square pipe 51 and the bottom square pipe 52, so that a rectangular frame composed of four square pipes can be formed, and the structural strength is high. The top first mounting plate 21 is connected below the top square pipe 51, and the bottom first mounting plate 31 is connected above the bottom square pipe 52, so that the load-bearing capacity of the top first mounting plate 21 and the bottom first mounting plate 31 can be improved, and further the structural strength, structural stability and service life of the door pocket can be improved, enabling the door pocket to withstand the repeated opening and closing of the door leaf 10.

[0079] Wherein, the bottom square pipe 52 and the top square pipe 51 have the same length, and the end face of the bottom square pipe 52 is flush with the outer surface of the side square pipe 53. Thereby, the aesthetics can be improved.

[0080] In an example, the first inner connector 711 and the top first mounting plate 21 are fixed below the top square pipe 51 through the same fastener; the second inner connector and the bottom first mounting plate 31 are fixed above the bottom square pipe 52 through the same fastener. In the case of adopting this technical solution, the number of fasteners used can be reduced, making the production and installation of the invisible door more convenient.

[0081] For example, internal threaded holes can be formed on the side wall of the top square pipe 51, first connection holes are formed on the top first mounting plate 21, a first through hole is provided at the inner end of the first inner connector 711, and the first fastener 81 can be a flat head screw. The flat head screw sequentially passes through the first through hole, the top prefabricated part 26, and the first connection hole from bottom to top and then is connected to the internal threaded hole of the top square pipe 51, thereby fixing the first inner connector 711, the top prefabricated part 26 and the top first mounting plate 21 on the top square pipe 51. Similarly, internal threaded holes can be formed on the side wall of the bottom square pipe 52, second connection holes are formed on the bottom first mounting plate 31, a second through hole is provided at the inner end of the second inner connector, and the second fastener 82 can be a bolt. The bolt sequentially passes through the second through hole, the bottom prefabricated part 36, and the second connection hole and then is connected to the internal threaded hole of the bottom square pipe 52, thereby fixing the second inner connector, the bottom prefabricated part 36 and the bottom first mounting plate 31 on the bottom square pipe 52.

[0082] In a possible implementation, with reference to Figure 8 , Figure 11 and Figure 13 , the door frame also includes a top decorative strip 61, a bottom decorative strip 62 and two side decorative strips 63. A top groove is provided on the top decorative strip 61. The second top mounting plate 22 is inserted into the top groove, and the top decorative strip 61 is inserted into the gap between the first top mounting plate 21 and the second top mounting plate 22. The lower surface of the top decorative strip 61 is flush with the lower surface of the top cross plate 24;

[0083] A bottom groove is provided on the bottom decorative strip 62. The second bottom mounting plate 32 is inserted into the bottom groove, and the bottom decorative strip 62 is inserted into the gap between the first bottom mounting plate 31 and the second bottom mounting plate 32. The upper surface of the bottom decorative strip 62 is flush with the upper surface of the bottom cross plate 34;

[0084] A side groove is provided on the side decorative strip 63. The second side mounting plate 42 is inserted into the side groove, and the side decorative strip 63 is inserted into the gap between the first side mounting plate 41 and the second side mounting plate 42. The inner surface of the side decorative strip 63 is flush with the inner surface of the side cross plate 44;

[0085] Wherein, the upper end surface of the side decorative strip 63 abuts against the first top mounting plate 21, and the lower end surface abuts against the first bottom mounting plate 31.

[0086] In the case of adopting the above technical solution, the top decorative strip 61 is used to fill the gap between the first top mounting plate 21 and the second top mounting plate 22, and at the same time, the lower surface of the top decorative strip 61 is flush with the lower surface of the top cross plate 24, so that the inner side of the top frame has a relatively flat surface, improving the aesthetics; similarly, the bottom decorative strip 62 is used to make the inner side of the bottom frame have a relatively flat surface, improving the aesthetics; the side decorative strip 63 is used to make the inner side of the side frame have a relatively flat surface, improving the aesthetics.

[0087] In addition, both ends of the top decorative strip 61 can abut against the inner surfaces of the two side decorative strips 63; both ends of the bottom decorative strip 62 can abut against the inner surfaces of the two side decorative strips 63.

[0088] In an example, a top chamfer is further provided on the top decorative strip 61, and the top chamfer is located between the top groove of the top decorative strip 61 and the first top mounting plate 21, so as to facilitate inserting the top decorative strip 61 into the gap between the first top mounting plate 21 and the second top mounting plate 22. Similarly, a bottom chamfer is further provided on the bottom decorative strip 62, and the bottom chamfer is located between the bottom groove of the bottom decorative strip 62 and the first bottom mounting plate 31, so as to facilitate inserting the bottom decorative strip 62 into the gap between the first bottom mounting plate 31 and the second bottom mounting plate 32. Similarly, a side chamfer is further provided on the side decorative strip 63, and the side chamfer is located between the side groove and the first side mounting plate 41, so as to facilitate inserting the side decorative strip 63 into the gap between the first side mounting plate 41 and the second side mounting plate 42.

[0089] In a possible embodiment, the top decorative strip 61 is butted against the first inner connecting member 711, and the lower surfaces of the top decorative strip 61 and the first inner connecting member 711 are flush; the bottom decorative strip 62 is butted against the second inner connecting member, and the upper surfaces of the bottom decorative strip 62 and the second inner connecting member are flush. In this way, the aesthetics of the door pocket can be further improved.

[0090] In a possible implementation, referring to Figure 4 As shown, the first inner connecting member 711 includes a first inner long plate and a first inner short plate connected in an L shape, the first outer connecting member 712 includes a first outer long plate and a first outer short plate connected in an L shape, the first inner long plate is parallel and fixedly connected to the top first mounting plate 21, the outer end of the first inner short plate is pivotally connected to the inner end of the first outer short plate, the first outer long plate is parallel to the top surface of the door leaf 10 and fixedly connected to the top surface of the door leaf 10; when the door leaf 10 is closed, the first inner long plate and the first outer long plate coincide, the first inner short plate and the first outer short plate coincide, and the first outer connecting member 712 is located below the first inner connecting member 711.

[0091] In the case of adopting the above technical solution, the L-shaped first inner connecting member 711 and the L-shaped first outer connecting member 712 are rotatably connected together, with a simple structure, and can be hidden between the top surface of the door leaf 10 and the upper surface of the door opening 021. Moreover, the installation positions of the first pivot connecting member 71 and the second pivot connecting member 72 in the width direction of the door leaf 10 can be adjusted as needed, so that the door leaf 10 can have a preset opening angle. In addition, both the first inner connecting member 711 and the first outer connecting member 712 are set to be L-shaped, which can better meet the requirement that the top first mounting plate 21 is located inside the decorative wall panel 02.

[0092] In an example, the first outer connecting member 712 is located within the area restricted by the top surface of the door leaf 10. That is, the first outer connecting member 712 does not extend out of the door leaf 10, ensuring that the first pivot connecting member 71 can be hidden between the top surface of the door leaf 10 and the upper surface of the door opening 021.

[0093] In an example, a third through hole is formed at the outer end of the first inner short plate, the third through hole is a stepped hole, a fourth through hole is formed at the inner end of the first outer short plate, the fourth through hole is a stepped hole; the door pocket further includes a rotating shaft and two stop members respectively connected to both ends of the rotating shaft, the rotating shaft passes through the third through hole and the fourth through hole, one stop member is received in the large-diameter portion of the third through hole, and the other stop member is received in the large-diameter portion of the fourth through hole. In the case of adopting this technical solution, the stop member can be received in the large-diameter portion, which is beneficial to reducing the thickness at the rotational connection of the first inner short plate and the first outer short plate, and further beneficial to reducing the gap between the upper surface of the door opening 021 and the top surface of the door leaf 10, and improving the hiding effect of the door leaf 10.

[0094] In one example, multiple first through-holes may all be located on the first inner long plate and be linearly spaced along the extending direction of the first inner long plate; multiple second through-holes may all be located on the first outer long plate and be linearly spaced along the extending direction of the first outer long plate.

[0095] In addition, the structures and sizes of the first pivot connecting member 71 and the second pivot connecting member 72 may be exactly the same. While simplifying the structure, it is convenient to install the invisible door. The specific structure and installation of the first pivot connecting member 71 have been introduced in detail above, and the structure and installation of the second pivot connecting member 72 will not be elaborated here.

[0096] In one possible implementation, referring to Figure 4 , the door leaf 10 is hollow. The door leaf 10 includes a front plate 101, four side plates 102 and four reinforcing rib plates 103. The four side plates 102 are sequentially connected end to end to form a rectangular frame, and the four side plates 102 are respectively vertically connected to the four side edges of the front plate 101. The four reinforcing rib plates 103 are sequentially connected end to end to form a rectangular frame, and the four reinforcing rib plates 103 are respectively vertically connected to the four side plates 102 correspondingly. In the case of adopting the above technical solution, the door leaf 10 is hollow, with a relatively small weight, which is beneficial to reducing the load-bearing burden on the door pocket and the decorative wall panel 02 and improving the service life of the invisible door. And the four side plates 102 and the four reinforcing rib plates 103 can ensure the structural strength of the door leaf 10. Moreover, it is also convenient to fix the first outer connecting member 712 on the top side plate 102 through the third fastener 83 to realize fixing the first outer connecting member 712 on the upper surface of the door leaf 10. Similarly, it is also convenient to fix the second outer connecting member on the bottom side plate 102 through the fourth fastener to realize fixing the second outer connecting member on the lower surface of the door leaf 10. Among them, both the third fastener 83 and the fourth fastener can be flat head screws.

[0097] Among them, the front plate 101 and the four side plates 102 can be obtained by sheet metal bending, and the four reinforcing rib plates 103 can be respectively connected to the four side plates 102 by welding.

[0098] In addition, the invisible door provided by the present application can use a push-button door lock so that it can be hidden inside the invisible door when the invisible door is closed. The push-button door lock can be installed between the side surface of the door opening and the inner surface of the invisible door to open the invisible door by pressing the invisible door or lock the invisible door in the door opening. There are various push-button door locks in the prior art, which can be selected according to needs, and the present application does not make a limitation.

[0099] In one example, fasteners such as flat head screws can pass through the first outer connecting member 712 and be connected to the side plate 102 of the door leaf 10, so as to fix the first outer connecting member 712 on the top surface of the door leaf 10. Of course, the second outer connecting member can also be fixed on the bottom surface of the door leaf 10 in the same way.

[0100] In a second aspect, referring to Figure 2 as shown, based on the above-mentioned invisible door, the present application further provides a prefabricated wall, which includes a wall 01, a decorative wall panel 02, a keel 03 and the above-mentioned invisible door. The decorative wall panel 02 is fixed on the keel 03, and the keel 03 is fixed on the wall of the wall 01; there is a gap between the decorative wall panel 02 and the wall to accommodate the door pocket. In the case of adopting this technical solution, when a fire door or a pipe shaft door 011 is installed on the wall, a door opening 021 can be opened at a place corresponding to the fire door or the pipe shaft door 011 on the decorative wall panel 02, and the invisible door is installed in the door opening 021. In this way, the fire door and the pipe shaft door 011 can be hidden, and the decorative effect is good and more beautiful.

[0101] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An invisible door for installation at the door opening of a decorative wall panel, and the decorative wall panel is installed on a wall. Characterized in that, it includes a door frame, a door leaf, a first pivot connection member and a second pivot connection member. The door frame includes a top frame and a bottom frame. The top frame includes a first top mounting plate which is located above the door opening and fixedly installed on the inner surface of the decorative wall panel. The bottom frame includes a first bottom mounting plate which is located below the door opening and fixedly installed on the inner surface of the decorative wall panel. The first pivot connection member includes a first inner connection member and a first outer connection member. The inner end of the first inner connection member is fixedly connected to the first top mounting plate. The outer end of the first inner connection member is pivotally connected to the inner end of the first outer connection member. The outer end of the first outer connection member is fixedly connected to the top surface of the door leaf. The lower surface of the first inner connection member is flush with or higher than the upper surface of the door opening. The first inner connection member is located above the second outer connection member. The second pivot connection member includes a second inner connection member and a second outer connection member. The inner end of the second inner connection member is fixedly connected to the first bottom mounting plate. The outer end of the second inner connection member is pivotally connected to the inner end of the second outer connection member. The outer end of the second outer connection member is fixedly connected to the bottom surface of the door leaf. The upper surface of the second inner connection member is flush with or lower than the lower surface of the door opening. The second inner connection member is located below the second outer connection member. When the door leaf is closed, the door leaf is located in the door opening, and the outer surface of the door leaf is flush with the outer surface of the wall. The first pivot connection member is hidden between the top surface of the door leaf and the upper surface of the door opening, and the second pivot connection member is hidden between the bottom surface of the door leaf and the lower surface of the door opening. Wherein, the top frame further includes a top vertical plate and a top horizontal plate which are connected in an L shape. The top vertical plate is attached to the inner surface of the decorative wall panel, and the top horizontal plate is attached to the upper surface of the door opening. The first top mounting plate is parallel to the top horizontal plate and connected to the inner surface of the top vertical plate. The bottom frame includes a bottom vertical plate and a bottom horizontal plate which are connected in an L shape. The bottom vertical plate is attached to the inner surface of the decorative wall panel, and the bottom horizontal plate is attached to the lower surface of the door opening. The first bottom mounting plate is parallel to the bottom horizontal plate and connected to the inner surface of the bottom vertical plate. When the door leaf is closed, the first pivot connection member is hidden between the top surface of the door leaf and the lower surface of the top horizontal plate, and the second pivot connection member is hidden between the bottom surface of the door leaf and the upper surface of the bottom horizontal plate.

2. The invisible door according to claim 1, Characterized in that, the outer end face of the top horizontal plate is flush with the outer surface of the decorative wall panel, and the outer end face of the bottom horizontal plate is flush with the outer surface of the decorative wall panel.

3. The invisible door according to claim 1, Characterized in that, The top frame further includes a top prefabricated part and a second top mounting plate. The second top mounting plate is connected to the inner surface of the top vertical plate. The second top mounting plate is parallel to the first top mounting plate and located below the first top mounting plate. The width of the second top mounting plate is smaller than that of the first top mounting plate. The top prefabricated part includes a top insertion block and a top stop block connected in an L shape. The top insertion block is inserted into the gap between the first top mounting plate and the second top mounting plate. The top stop block abuts against the first top mounting plate. The first inner connecting piece is fixed on the lower surface of the top insertion block. The bottom frame further includes a bottom prefabricated part and a second bottom mounting plate. The second bottom mounting plate is connected to the inner surface of the bottom vertical plate. The second bottom mounting plate is parallel to the first bottom mounting plate and located above the first bottom mounting plate. The width of the second bottom mounting plate is smaller than that of the first bottom mounting plate. The bottom prefabricated part includes a bottom insertion block and a bottom stop block connected in an L shape. The bottom insertion block is inserted into the gap between the first bottom mounting plate and the second bottom mounting plate. The bottom stop block abuts against the first bottom mounting plate. The second inner connecting piece is fixed on the upper surface of the bottom insertion block.

4. The invisible door according to claim 1, characterized in that a plurality of first through holes are provided at the inner end of the first inner connecting piece, and first fasteners pass through the first through holes to be connected to the first top mounting plate; a plurality of second through holes are provided at the inner end of the second inner connecting piece, and second fasteners pass through the second through holes to be connected to the first bottom mounting plate.

5. The invisible door according to claim 4, characterized in that a top sinking groove is provided on the lower surface of the first top mounting plate, and first connecting holes corresponding to the first through holes are provided on the bottom wall of the top sinking groove. The first fasteners pass through the first through holes and the first connecting holes; a bottom sinking groove is provided on the lower surface of the first bottom mounting plate, and second connecting holes corresponding to the second through holes are provided on the bottom wall of the bottom sinking groove. The second fasteners pass through the second through holes and the second connecting holes.

6. The invisible door according to claim 3, characterized in that the door pocket further includes two side frames. The two side frames, the top frame and the bottom frame are connected end to end to form the rectangular door pocket. The two side frames are supported between the bottom frame and the top frame; the top frame further includes a top insertion plate. The top insertion plate is parallel to the top vertical plate and is connected to the upper surface of the top horizontal plate. The top insertion plate is inserted into an upper slot formed on the upper surface of the door opening; the bottom frame includes a bottom insertion plate. The bottom insertion plate is parallel to the bottom vertical plate and is connected to the lower surface of the bottom horizontal plate. The bottom insertion plate is inserted into a lower slot formed on the lower surface of the door opening.

7. The invisible door according to claim 6, characterized in that The side frame includes a first side mounting plate, a second side mounting plate, a side insertion plate, and a side vertical plate and a side horizontal plate connected in an L shape. The side vertical plate is attached to the inner surface of the decorative wall panel, the side horizontal plate is attached to the side surface of the door opening, the side insertion plate is parallel to the side vertical plate and connected to the inner surface of the side horizontal plate, and the side insertion plate is inserted into a side slot formed on the side surface of the door opening. The first side mounting plate is parallel to the side horizontal plate and connected to the inner surface of the side vertical plate; the second side mounting plate is connected to the inner surface of the side vertical plate, the second side mounting plate is spaced and parallel to the first side mounting plate, and the width of the second side mounting plate is smaller than the width of the first side mounting plate; Wherein, both ends of the side vertical plate are respectively connected to the top vertical plate and the bottom vertical plate, both ends of the side horizontal plate are respectively connected to the top horizontal plate and the bottom horizontal plate, both ends of the first side mounting plate are respectively connected to the top first mounting plate and the bottom first mounting plate, both ends of the second side mounting plate are respectively connected to the top second mounting plate and the bottom second mounting plate.

8. The invisible door according to claim 7, characterized in that, the door frame further includes a top square tube, a bottom square tube and two side square tubes, the top square tube is located above the top first mounting plate and connected to the top first mounting plate, and the side surface of the top square tube is attached to the top vertical plate; the bottom square tube is located below the bottom first mounting plate and connected to the bottom first mounting plate, and the side surface of the bottom square tube is attached to the bottom vertical plate; the side square tubes are located outside the first side mounting plate and are respectively attached to the first side mounting plate and the side vertical plate; both ends of the side square tube respectively abut against the side surface of the top square tube and the side surface of the bottom square tube.

9. The invisible door according to claim 8, characterized in that, the first inner connector and the top first mounting plate are fixed below the top square tube by the same fastener; the second inner connector and the bottom first mounting plate are fixed above the bottom square tube by the same fastener.

10. The invisible door according to claim 7, characterized in that, the door frame further includes a top decorative strip, a bottom decorative strip and two side decorative strips, a top groove is provided on the top decorative strip, the top second mounting plate is inserted into the top groove, and the top decorative strip is inserted into the gap between the top first mounting plate and the top second mounting plate, and the lower surface of the top decorative strip is flush with the lower surface of the top horizontal plate; a bottom groove is provided on the bottom decorative strip, the bottom second mounting plate is inserted into the bottom groove, and the bottom decorative strip is inserted into the gap between the bottom first mounting plate and the bottom second mounting plate, and the upper surface of the bottom decorative strip is flush with the upper surface of the bottom horizontal plate; a side groove is provided on the side decorative strip, the second side mounting plate is inserted into the side groove, and the side decorative strip is inserted into the gap between the first side mounting plate and the second side mounting plate, and the inner surface of the side decorative strip is flush with the inner surface of the side horizontal plate; wherein, the upper end surface of the side decorative strip abuts against the top first mounting plate, and the lower end surface abuts against the bottom first mounting plate.

11. The invisible door according to claim 10, characterized in that, The top decorative strip is butted against the first inner connecting member, and the lower surfaces of the top decorative strip and the first inner connecting member are flush. The bottom decorative strip is butted against the second inner connecting member, and the upper surfaces of the bottom decorative strip and the second inner connecting member are flush.

12. The invisible door according to any one of claims 1-11, characterized in that the first inner connecting member includes a first inner long plate and a first inner short plate connected in an L shape, and the first outer connecting member includes a first outer long plate and a first outer short plate connected in an L shape, the first inner long plate is parallel and fixedly connected to the top first mounting plate, the outer end of the first inner short plate is pivotally connected to the inner end of the first outer short plate, and the first outer long plate is parallel to the top surface of the door leaf and fixedly connected to the top surface of the door leaf; when the door leaf is closed, the first inner long plate and the first outer long plate coincide, the first inner short plate and the first outer short plate coincide, and the first outer connecting member is located below the first inner connecting member.

13. The invisible door according to claim 12, characterized in that the first outer connecting member is located within the area restricted by the top surface of the door leaf.

14. The invisible door according to claim 12, characterized in that a third through hole is formed at the outer end of the first inner short plate, the third through hole is a stepped hole, a fourth through hole is formed at the inner end of the first outer short plate, and the fourth through hole is a stepped hole; the door pocket further includes a rotating shaft and two stoppers respectively connected to both ends of the rotating shaft, the rotating shaft passes through the third through hole and the fourth through hole, and one of the stoppers is received in the large-diameter portion of the third through hole, and the other stopper is received in the large-diameter portion of the fourth through hole.

15. The invisible door according to claim 12, characterized in that the structures of the first pivot connecting member and the second pivot connecting member are the same.

16. The invisible door according to any one of claims 1-11, characterized in that the door leaf is hollow, the door leaf includes a front plate, four side plates and four reinforcing rib plates, the four side plates are sequentially connected end to end to form a rectangular frame, and the four side plates are respectively vertically connected to the four side edges of the front plate, the four reinforcing rib plates are sequentially connected end to end to form a rectangular frame, and the four reinforcing rib plates are respectively vertically connected to the four side plates.

17. An assembled wall, characterized in that it includes a wall, a decorative wall panel, a keel and the invisible door according to any one of claims 1-16 above, the decorative wall panel is fixed on the keel, and the keel is fixed on the wall; there is a gap between the decorative wall panel and the wall to accommodate the door pocket.

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