CN217027728U - Prefabricated wallboard and prefabricated assembly type building - Google Patents
Prefabricated wallboard and prefabricated assembly type building Download PDFInfo
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- CN217027728U CN217027728U CN202123454709.3U CN202123454709U CN217027728U CN 217027728 U CN217027728 U CN 217027728U CN 202123454709 U CN202123454709 U CN 202123454709U CN 217027728 U CN217027728 U CN 217027728U
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Abstract
The utility model relates to a prefabricated wallboard and a prefabricated assembly type building, wherein the prefabricated wallboard comprises: a first honeycomb panel; the second cellular board is arranged on one side of the first cellular board at intervals, and an installation space is defined between the first cellular board and the second cellular board; and two ends of the first connecting piece are respectively connected with the first honeycomb plate and the second honeycomb plate. Above-mentioned prefabricated wallboard, first honeycomb panel and second honeycomb panel interval set up and limit formation installation space, and mountable water and electricity pipeline unit can install in the installation space, can install and save space, makes the holistic structure of prefabricated wallboard pleasing to the eye, and first honeycomb panel and second honeycomb panel pass through first connecting piece and connect, can protect the wholeness of honeycomb panel, have also avoided adopting the adhesive to close up, have simplified the installation, have improved the reliability of prefabricated wallboard.
Description
Technical Field
The utility model relates to the technical field of prefabricated buildings and cellular boards, in particular to a prefabricated wallboard and a prefabricated building.
Background
The fabricated building is a building which is fabricated by transferring a large amount of field operation work in the traditional construction mode to a factory, processing and manufacturing building components and accessories (such as wall boards, stairs, balconies and the like) in the factory, transporting the components and accessories to a building construction site, and assembling and installing the components and the accessories on the site in a reliable connection mode.
The honeycomb plate is a plate made of two thin panels firmly adhered to two sides of a layer of thick honeycomb core material, and is also called a honeycomb sandwich structure. The honeycomb plate has high strength and rigidity, less material consumption, light weight, inner core density almost equal to that of foamed plastic, good shock-proof, heat-insulating, sound-proof, waterproof and flame-retardant performances, is a pure green pollution-free plate, can be recycled and regenerated, and is widely used for assembly type buildings.
At present, a single honeycomb plate is generally adopted in an assembly type building to serve as a partition wall or an outer wall cladding of the building, the periphery of the honeycomb plate is glued and closed, and the integrity of the honeycomb plate is damaged.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need to provide a prefabricated wall panel and a prefabricated building, which can protect the integrity of a honeycomb panel by using a plurality of honeycomb panels, aiming at the problem that the integrity of the honeycomb panel is damaged by using a single honeycomb panel.
According to one aspect of the present application, there is provided a prefabricated wall panel comprising:
a first cellular board;
the second honeycomb plate is arranged on one side of the first honeycomb plate at intervals, and an installation space is defined between the first honeycomb plate and the second honeycomb plate; and
and two ends of the first connecting piece are respectively connected with the first cellular board and the second cellular board.
In one embodiment, the first honeycomb panel comprises a first upper face sheet, a first lower face sheet, and a first honeycomb core material located between the first upper face sheet and the first lower face sheet; and/or
The second honeycomb panel includes a second top panel, a second bottom panel, and a second honeycomb core, the second honeycomb core being located between the second top panel and the second bottom panel.
In one embodiment, the first connecting member includes a first upper connecting portion, a first lower connecting portion, and a first middle connecting portion connected between the first upper connecting portion and the first lower connecting portion, the first upper connecting portion is interposed between the first upper panel and the first honeycomb core and is fixedly connected to the first honeycomb panel, and the first lower connecting portion is interposed between the second lower panel and the second honeycomb core and is fixedly connected to the second honeycomb panel.
In one embodiment, the prefabricated wall panel further comprises a first fastening member inserted into the first honeycomb core through the first upper panel and the first upper connection portion in sequence, and a second fastening member inserted into the second honeycomb core through the second lower panel and the first lower connection portion in sequence.
In one embodiment, the prefabricated wall panel further comprises a second connecting member installed in the installation space, and two ends of the second connecting member are respectively connected with the first lower panel and the second upper panel.
According to another aspect of the present application, there is provided a prefabricated assembly building including the prefabricated wall panel described above.
In one embodiment, the prefabricated assembly type building further comprises a prefabricated wall body and a third connecting piece, and one end of the prefabricated wall plate is fixedly connected to the prefabricated wall body through the third connecting piece.
In one embodiment, the first honeycomb panel includes a first upper panel, a first lower panel and a first honeycomb core, the second honeycomb panel includes a second upper panel, a second lower panel and a second honeycomb core, the third connecting member includes a third upper connecting portion, a third lower connecting portion and a third intermediate connecting portion connected between the third upper connecting portion and the third lower connecting portion, the third upper connecting portion is inserted between the first upper panel and the first honeycomb core and is fixedly connected to the first honeycomb panel, the third lower connecting portion is inserted between the second lower panel and the second honeycomb core and is fixedly connected to the second honeycomb panel, and the third intermediate connecting portion is fixedly connected to the prefabricated wall.
In one embodiment, the prefabricated construction further comprises a third fastening member inserted into the first honeycomb core material through the first upper panel and the third upper connection part in this order, and a fourth fastening member inserted into the second honeycomb core material through the second lower panel and the third lower connection part in this order.
In one embodiment, the prefabricated building further comprises soundproof cotton, and the soundproof cotton is arranged between the prefabricated wall body and the third connecting member.
Above-mentioned prefabricated wallboard, first honeycomb panel and second honeycomb panel interval set up and limit formation installation space, and mountable water and electricity pipeline unit can install and save space in the installation space, makes the holistic structure of prefabricated wallboard pleasing to the eye, and first honeycomb panel and second honeycomb panel pass through first connecting piece and connect, can protect the wholeness of honeycomb panel, have also avoided adopting the adhesive to close up, have simplified the installation, have improved the reliability of prefabricated wallboard.
Drawings
FIG. 1 is a schematic structural view of a prefabricated wall panel of the present invention;
fig. 2 is a schematic structural view of the prefabricated building according to the present invention.
The reference numbers illustrate:
10. prefabricating an assembly type building; 100. prefabricating a wallboard; 110. a first cellular board; 111. a first upper panel; 112. a first lower panel; 113. a first honeycomb core material; 120. a second cellular board; 121. a second upper panel; 122. a second lower panel; 123. a second honeycomb core material; 130. a first connecting member; 131. a first upper connecting portion; 132. a first lower connecting portion; 133. a first intermediate connection portion; 140. a first fastener; 150. a second fastener; 160. a second connecting member; 170. an installation space; 210. prefabricating a wall body; 220. A third connecting member; 221. a third upper connecting portion 222 and a third lower connecting portion; 223. a third intermediate connection portion; 230. a third fastener; 240. a fourth fastener; 250. sound insulation cotton; 260. and a fifth fastener.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1, fig. 1 shows a structural schematic view of a prefabricated wall panel according to an embodiment of the present invention, and fig. 2 shows a structural schematic view of a prefabricated building according to an embodiment of the present invention.
The present application provides a prefabricated assembly type building 10, which includes a prefabricated wall panel 100 and a hydroelectric line unit (not shown in the drawings), wherein the prefabricated wall panel 100 includes a first cellular board 110, a second cellular board 120, and a first connector 130, and the hydroelectric line unit is installed in an installation space 170 defined between the first cellular board 110 and the second cellular board 120.
Specifically, the first honeycomb panel 110 has a rectangular parallelepiped plate-like structure as a whole, and the first honeycomb panel 110 includes a first upper surface plate 111, a first lower surface plate 112, and a first honeycomb core 113. The first upper panel 111 and the first lower panel 112 are equal in size and are arranged in parallel at intervals, the first honeycomb core 113 is located in a gap formed by the first upper panel 111 and the first lower panel 112, and the first upper panel 111 and the first lower panel 112 are fixed to opposite sides of the first honeycomb core 113 by an adhesive, and the first honeycomb core 113 includes a plurality of honeycomb holes (not shown).
The second cellular board 120 is a rectangular parallelepiped plate-shaped structure, and the second cellular board 120 is disposed at one side of the first cellular board 110 at intervals. The second honeycomb panel 120 includes a second upper panel 121, a second lower panel 122, and a second middle panel 123, the second upper panel 121 and the second lower panel 122 are the same in size and are arranged in parallel at intervals, the second honeycomb core 123 is located in a gap formed by the second upper panel 121 and the second lower panel 122, and the second upper panel 121 and the second lower panel 122 are fixed to opposite sides of the second honeycomb core 123 by an adhesive, and the second honeycomb core 123 includes a plurality of honeycomb holes (not shown).
In some embodiments, the cell openings of the first and second honeycomb cores 113 and 123 are hexagonal, it is understood that the cell openings may be rectangular, square, bell-shaped, sinusoidal, diamond-shaped, double bell-shaped, tubular, etc., and that different cell opening shapes may have different characteristics and may be configured as desired to meet different requirements.
Further, the first honeycomb panel 110 and the second honeycomb panel 120 are parallel to each other, and the first lower panel 112 of the first honeycomb panel 110 and the second upper panel 121 of the second honeycomb panel 120 are parallel to and spaced apart from each other. Thus, the installation space 170 is defined between the first lower panel 112 and the second upper panel 121, and the hydroelectric line unit can be installed in the installation space 170, which is beautiful and saves installation space.
The first connecting member 130 is integrally formed in an i-shaped structure, and two ends of the first connecting member 130 are connected to the first cellular board 110 and the second cellular board 120, respectively. The first connecting member 130 includes a first upper connecting portion 131, a first lower connecting portion 132, and a first middle connecting portion 133 connected between the first upper connecting portion 131 and the first lower connecting portion 132, the first upper connecting portion 131 is a rectangular plate-shaped structure as a whole, the first upper connecting portion 131 is inserted between the first upper panel 111 and the first honeycomb core 113 and is fixed to the first honeycomb panel 110, that is, one end of the first upper connecting portion 131 away from the first middle connecting portion 133 abuts against one side of the first upper panel 111, the first lower connecting portion 132 is a rectangular plate-shaped structure as a whole, the first lower connecting portion 132 is inserted between the second lower panel 122 and the second honeycomb core 123 and is fixed between the second honeycomb core 123, that is, one end of the first lower connecting portion 132 away from the first middle connecting portion 133 abuts against one side of the second lower panel 122, the first middle connecting portion 133 is a rectangular plate-shaped structure as a whole, the first intermediate connection portion 133 is sequentially inserted through the first honeycomb core 113, the mounting space 170, and the second honeycomb core 123. In this way, the first honeycomb panel 110 and the second honeycomb panel 120 can be connected to each other by the first connecting member 130, thereby simplifying the installation process and improving the reliability of the prefabricated wall panel 100.
In a preferred embodiment, the first connecting member 130 is an i-shaped keel structure, and the sizes of the keels of different types are different, so that the size of the installation space 170 can be adjusted by selecting different keels to change the size of the gap between the first cellular board 110 and the second cellular board 120. It is understood that the shape and type of the first connecting member 130 are not limited thereto, and may be set as needed to meet various requirements.
In some embodiments, the prefabricated wall panel 100 includes a plurality of first connectors 130, and the plurality of first connectors 130 are spaced apart along the length of the installation space 170. In this way, the plurality of first connectors 130 can firmly connect the first cellular board 110 and the second cellular board 120, further improving the reliability of the prefabricated wall panel 100.
In some embodiments, prefabricated wall panel 100 further includes first fastener 140 and second fastener 150. The first fastener 140 sequentially passes through the first upper face plate 111 of the first honeycomb panel 110 and the first upper connection part 131 of the first connector 130 and is inserted into the first honeycomb core 113 of the first honeycomb panel 110, and the second fastener 150 sequentially passes through the second lower face plate 122 of the second honeycomb panel 120 and the first lower connection part 132 of the first connector 130 and is inserted into the second honeycomb core 123 of the second honeycomb panel 120.
In this way, the first fastener 140 may fixedly connect the first cellular board 110 and the first upper connection portion 131 of the first connection member 130, the second fastener 150 may fixedly connect the second cellular board 120 and the first lower connection portion 132 of the first connection member 130, and the first upper connection portion 131 and the first lower connection portion 132 of the first connection member 130 are connected by the first intermediate connection portion 133, so that the first connection member 130 can fixedly connect the first cellular board 110 and the second cellular board 120 at the same time, and the installation of the prefabricated wall panel 100 is simplified.
In a preferred embodiment, the first fastener 140 and the second fastener 150 are screws. It is understood that the first fastener 140 and the second fastener 150 may be other types of fasteners, and may be any type of fastener that can achieve the fastening function.
In some embodiments, prefabricated wall panel 100 further includes a second connector 160. The second connecting member 160 has a C-shaped structure as a whole, the second connecting member 160 is installed in the installation space 170, and opposite ends of the second connecting member 160 are connected to the first lower panel 112 of the first honeycomb panel 110 and the second upper panel 121 of the second honeycomb panel 120, respectively. The second connecting member includes a second upper connecting portion, a second lower connecting portion and a second middle connecting portion, the second middle connecting portion is connected between the second upper connecting portion and the second lower connecting portion, the second upper connecting portion is integrally formed in a rectangular plate-shaped structure, the second upper connecting portion abuts against the first lower panel 112 of the first cellular board 110 and is fixedly connected through a fastener (not shown in the figure), and the second lower connecting portion abuts against the second upper panel 121 of the second cellular board 120 and is fixedly connected through a fastener (not shown in the figure). Therefore, the connection firmness of the first honeycomb panel 110 and the second honeycomb panel 120 can be enhanced, and the reliability of the prefabricated wall panel 100 can be improved.
In a preferred embodiment, the second connecting member 160 is a C-shaped keel structure, and different sizes of keels can be selected to fit the size of the first connecting member 130. It is understood that the shape and type of the second connecting member 160 are not limited thereto, and may be set as needed to meet various requirements.
The present application also provides a prefabricated assembly type building 10, including foretell prefabricated wallboard 100, prefabricated assembly type building 10 still includes water and electricity pipeline unit, and water pipeline unit installs in installation space 170.
In some embodiments, the prefabricated building 10 further includes a prefabricated wall 210 and a third connector 220. One end of the prefabricated wall panel 100 is fixedly connected to the prefabricated wall 210 through a third connecting member 220. This allows for quick installation of prefabricated wall panel 100 by providing third connector 220.
Further, the third connection member 220 is integrally formed in a C-shaped structure and is installed at one end of the prefabricated wall panel 100, and opposite ends of the third connection member 220 are connected to the first honeycomb panel 110 and the second honeycomb panel 120, respectively. The third connecting member 220 includes a third upper connecting portion 221, a third lower connecting portion 222, and a third middle connecting portion 223 connected between the third upper connecting portion 221 and the third lower connecting portion 222, the third upper connecting portion 221 is integrally formed as a rectangular plate-shaped structure, the third upper connecting portion 221 is inserted between the first upper panel 111 and the first honeycomb core material 113 and is fixedly connected to the first honeycomb panel 110, i.e., one end of the third upper connecting portion 221 away from the third middle connecting portion 223 abuts against one side of the first upper panel 111, the third lower connecting portion 222 is integrally formed as a rectangular plate-shaped structure, the third lower connecting portion 222 is inserted between the second lower panel 122 and the second honeycomb core material 123 and is fixedly connected to the second honeycomb panel 120, i.e., one end of the third lower connecting portion 222 away from the third middle connecting portion 223 abuts against one side of the second lower panel 122, the third middle connecting portion 223 is integrally formed as a rectangular plate-shaped structure, the third middle connecting portion 223 is fixedly connected to the prefabricated wall 210, that is, one side of the third intermediate connecting portion 223 abuts against the prefabricated wall 210, and the other side thereof abuts against the prefabricated wall panel 100.
In this way, the third upper connection portion 221 and the third lower connection portion 222 of the third connection member 220 connect the first cellular board 110 and the second cellular board 120, and the third middle connection portion 223 connects the prefabricated wall panel 100 and the prefabricated wall 210, so that the installation is convenient.
In a preferred embodiment, the third connecting member 220 is integrally formed as a "C" shaped keel. It is understood that the shape and type of the third connecting member 220 are not limited thereto, and may be configured as needed to meet different requirements.
In some embodiments, prefabricated building 10 further includes third fastener 230, fourth fastener 240, and fifth fastener 260. The third fastening member 230 is inserted into the first honeycomb core 113 of the first honeycomb panel 110 through the first upper panel 111 of the first honeycomb panel 110 and the third upper connection portion 221 of the third connection member 220 in sequence, the fourth fastening member 240 is inserted into the second honeycomb core 123 of the second honeycomb panel 120 through the second lower panel 122 of the second honeycomb panel 120 and the third lower connection portion 222 of the third connection member 220 in sequence, and the fifth fastening member 260 is inserted into the prefabricated wall 210 through the third middle connection portion 223 of the third connection member 220 in sequence.
In this way, the third fastener 230 may fixedly connect the third upper connection portion 221 of the first honeycomb panel 110 and the third connection member 220, the fourth fastener 240 may fixedly connect the third lower connection portion 222 of the second honeycomb panel 120 and the third connection member 220, the fifth fastener 260 may fixedly connect the prefabricated wall panel 100 to the prefabricated wall 210, and the third upper connection portion 221 and the third lower connection portion 222 of the third connection member 220 are connected by the third intermediate connection portion 223, and the third intermediate connection portion 223 of the third connection member 220 may fix the prefabricated wall panel 100 to one side of the prefabricated wall 210, so that the third connection member 220 may fixedly connect the first honeycomb panel 110, the second honeycomb panel 120 and the prefabricated wall 210 at the same time, and the installation step of the prefabricated wall panel 100 is simplified.
In a preferred embodiment, the third fastener 230, the fourth fastener 240, and the fifth fastener 260 are screws. It is understood that the third fastener 230, the fourth fastener 240 and the fifth fastener 260 may be other types of fasteners, and the fastening function may be achieved.
In some embodiments, the prefabricated building 10 further includes soundproof cotton 250, and the soundproof cotton 250 is disposed between the prefabricated wall 210 and the third connecting member 220. The fifth fastening member 260 sequentially passes through the third intermediate connection portion 223 of the third connection member 220, the soundproof cotton 250, and the prefabricated wall 210. In this way, the fifth fastening member 260 allows the prefabricated wall panel 100, the soundproof cotton 250 and the prefabricated wall 210 to be sequentially connected, and the soundproof cotton 250 enhances the soundproof effect of the prefabricated construction 10.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A prefabricated wall panel, comprising:
a first honeycomb panel;
the second cellular board is arranged on one side of the first cellular board at intervals, and an installation space is defined between the first cellular board and the second cellular board; and
and two ends of the first connecting piece are respectively connected with the first cellular board and the second cellular board.
2. A prefabricated wall panel according to claim 1, wherein the first honeycomb panel comprises a first upper face sheet, a first lower face sheet, and a first honeycomb core, the first honeycomb core being located between the first upper face sheet and the first lower face sheet; and/or
The second honeycomb panel includes a second top face sheet, a second bottom face sheet, and a second honeycomb core, the second honeycomb core being positioned between the second top face sheet and the second bottom face sheet.
3. The prefabricated wall panel of claim 2, wherein the first connecting member comprises a first upper connecting portion interposed between the first upper panel and the first honeycomb core and fixedly coupled to the first honeycomb panel, a first lower connecting portion interposed between the second lower panel and the second honeycomb core and fixedly coupled to the second honeycomb panel, and a first intermediate connecting portion connected between the first upper connecting portion and the first lower connecting portion.
4. A prefabricated wall panel according to claim 3, further comprising a first fastener inserted into the first honeycomb core through the first upper face plate and the first upper connection portion in sequence, and a second fastener inserted into the second honeycomb core through the second lower face plate and the first lower connection portion in sequence.
5. The prefabricated wall panel of claim 2, further comprising a second connector installed in the installation space, wherein both ends of the second connector are connected to the first lower panel and the second upper panel, respectively.
6. A prefabricated building including a prefabricated wall panel according to any one of claims 1 to 5, further comprising a hydroelectric pipeline unit installed in said installation space.
7. The prefabricated building of claim 6, further comprising a prefabricated wall body and a third connecting member, wherein one end of the prefabricated wall panel is fixedly connected to the prefabricated wall body through the third connecting member.
8. The prefabricated building of claim 7, wherein the first honeycomb panel comprises a first upper panel, a first lower panel and a first honeycomb core, the second honeycomb panel comprises a second upper panel, a second lower panel and a second honeycomb core, the third connecting member comprises a third upper connecting portion, a third lower connecting portion and a third middle connecting portion connected between the third upper connecting portion and the third lower connecting portion, the third upper connecting portion is inserted between the first upper panel and the first honeycomb core and fixedly connected to the first honeycomb panel, the third lower connecting portion is inserted between the second lower panel and the second honeycomb core and fixedly connected to the second honeycomb panel, and the third middle connecting portion is fixedly connected to the prefabricated wall.
9. The prefabricated building of claim 8, further comprising a third fastener inserted into the first honeycomb core through the first upper panel and the third upper connection portion in sequence, and a fourth fastener inserted into the second honeycomb core through the second lower panel and the third lower connection portion in sequence.
10. The prefabricated building of claim 7, further comprising soundproof cotton disposed between the prefabricated wall and the third connecting member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123454709.3U CN217027728U (en) | 2021-12-31 | 2021-12-31 | Prefabricated wallboard and prefabricated assembly type building |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123454709.3U CN217027728U (en) | 2021-12-31 | 2021-12-31 | Prefabricated wallboard and prefabricated assembly type building |
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| CN217027728U true CN217027728U (en) | 2022-07-22 |
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