Inside corner fitting and wall panel system

Abstract

The application relates to the technical field of building decoration, and provides a re-entrant corner assembly part and a wallboard system. The re-entrant corner assembly part comprises a main body part, a first connecting surface, a second connecting surface and an inner concave arc surface; the first end of the inner concave arc surface is connected with the first end of the first connecting surface, the second end of the inner concave arc surface is connected with the first end of the second connecting surface, the first connecting surface extends to the side of the inner concave arc surface which is convex, and the second connecting surface extends to the side of the inner concave arc surface which is convex; the connecting part comprises a first connecting part and a second connecting part; the first connecting part is arranged at the first connecting surface, and the second connecting part is arranged at the second connecting surface; the first connecting part is arranged between the two end parts of the first connecting surface, and / or the second connecting part is arranged between the two end parts of the second connecting surface. The application can improve the wall surface aesthetics of the joint between the re-entrant corner assembly part and the fabricated wallboard.

Description

Technical Field

[0001] This application relates to the field of construction, and more specifically, to a corner fitting and wall panel system. Background Technology

[0002] In prefabricated wall systems, wall components are prefabricated in a factory and assembled on-site. Compared to traditional wall construction and decoration methods, the installation process is more efficient and environmentally friendly. Currently, during assembly, the internal corner finishing of prefabricated wall systems typically uses corner fittings to work with the prefabricated wall panels. For example, Chinese invention patent CN114517566A discloses a corner fitting and a corner decorative structure incorporating it. The corner fitting uses first and second slots to restrict the positions of the first and second prefabricated wall panels, ensuring stable installation. However, after installation, the first and second edge trims protrude from the first and second wall panels, creating a step at the overlap and affecting the aesthetics of the wall. Utility Model Content

[0003] In view of the above problems, this application provides a corner fitting and wall panel system that can improve the aesthetics of the wall surface at the joint between the corner fitting and the prefabricated wall panel.

[0004] According to the first aspect of this application, a corner fitting is provided, comprising:

[0005] The main body includes a first connecting surface, a second connecting surface, and a concave arc-shaped surface; the first end of the concave arc-shaped surface is connected to the first end of the first connecting surface, the second end of the concave arc-shaped surface is connected to the first end of the second connecting surface, the first connecting surface extends toward the side of the concave arc-shaped surface that protrudes, and the second connecting surface extends toward the side of the concave arc-shaped surface that protrudes.

[0006] The connecting portion includes a first connecting portion and a second connecting portion; the first connecting portion is disposed at a first connecting surface, and the second connecting portion is disposed at a second connecting surface; the first connecting portion is disposed between the two ends of the first connecting surface, and / or the second connecting portion is disposed between the two ends of the second connecting surface.

[0007] According to an embodiment of this application, the first connecting portion is a protrusion protruding from the first connecting surface, and / or the second connecting portion is a protrusion protruding from the second connecting surface.

[0008] According to an embodiment of this application, the first connecting portion is a groove recessed toward the inner side of the first connecting surface, and / or the second connecting portion is a groove recessed toward the inner side of the second connecting surface.

[0009] According to an embodiment of this application, the first connecting portion extends a predetermined length along the first end of the concave arc surface, and the first surface of the first connecting portion forms a complete arc surface with the concave surface of the concave arc surface; or, the second connecting portion extends a predetermined length along the second end of the concave arc surface, and the first surface of the second connecting portion forms a complete arc surface with the concave surface of the concave arc surface.

[0010] According to embodiments of this application, it further includes a first fixing part, which is connected to the second end of the first connecting surface. The first fixing part and the side of the first connecting surface where the first connecting part is provided form a first connecting area for cooperating with the prefabricated wall panel. And / or, it further includes a second fixing part, which is connected to the second end of the second connecting surface. The second fixing part and the side of the second connecting surface where the second connecting part is provided form a second connecting area for cooperating with the prefabricated wall panel.

[0011] According to an embodiment of this application, the first fixing part includes a first mounting part having a first countersunk groove with the opening of the first countersunk groove facing the first connection area, and / or, the second fixing part includes a second mounting part having a second countersunk groove with the opening of the second countersunk groove facing the second connection area.

[0012] According to an embodiment of this application, it further includes a first support portion and a second support portion. The first support portion is connected to the second end of the first connecting surface, and the second support portion is connected to the second end of the second connecting surface. The first support portion and the second support portion are connected, and a cavity is formed between the first support portion, the second support portion and the main body portion.

[0013] According to an embodiment of this application, the concave surface of the concave arcuate surface has a decorative layer.

[0014] A second aspect of this application provides a wall panel system, including a first prefabricated wall panel, a second prefabricated wall panel, and the aforementioned corner fitting. The first prefabricated wall panel has a first splicing portion at its first end that mates with a first connecting portion of the corner fitting, and the second prefabricated wall panel has a second splicing portion at its second end that mates with a second connecting portion of the corner fitting. The corner fitting is fixed to the wall. The first prefabricated wall panel is connected to the first connecting portion via the first splicing portion, and the second prefabricated wall panel is connected to the second connecting portion via the second splicing portion.

[0015] According to an embodiment of this application, when the first connecting part is a slot, it further includes a first I-beam, the first splicing part is a first groove, the I-beam connects the slot and the first groove, and / or, when the second connecting part is a slot, it further includes a second I-beam, the second splicing part is a second groove, the I-beam connects the slot and the second groove.

[0016] The above one or more embodiments have the following beneficial effects: In the embodiments of this application, the connecting part of the inside corner fitting and the prefabricated wall panel is set between the two ends of the first connecting surface and / or the second connecting surface, so that the mating structure between the prefabricated wall panel and the inside corner fitting is in a position that is not visible after installation, which can realize a smooth transition between the prefabricated wall panel and the inside corner fitting, avoid the formation of a step between the prefabricated wall panel and the inside corner fitting, and greatly improve the aesthetics of the wall surface. Attached Figure Description

[0017] The above-mentioned contents, other objects, features and advantages of this application will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0018] Figure 1 This schematic diagram illustrates a first structure of the corner fitting according to an embodiment of the present application;

[0019] Figure 2 This schematically illustrates a wall panel system after installation of a first structure of the corner fitting according to an embodiment of this application;

[0020] Figure 3 This schematic diagram illustrates a second structure of the corner fitting according to an embodiment of the present application;

[0021] Figure 4 This schematically illustrates a wall panel system installed according to a second structure of the corner fitting according to an embodiment of this application;

[0022] Figure 5 A schematic diagram illustrating a third structure of the corner fitting according to an embodiment of this application is shown.

[0023] Figure 6 The diagram illustrates a wall panel system after installation of a third structure of the corner fitting according to an embodiment of this application.

[0024] In the diagram: 1. Corner fitting; 2. First prefabricated wall panel; 3. Second prefabricated wall panel; 4. I-beam; 101. First connecting surface; 102. Second connecting surface; 103. Concave arc surface; 1031. Finishing layer; 201. First protrusion; 202. Second protrusion; 203. Slot; 204. Stop block; 205. Mounting slot; 301. First fixing part; 3011. First countersunk nail slot; 3012. First support part; 302. First connecting area; 303. Second fixing part; 3031. Second countersunk nail slot; 3032. Second support part; 304. Second connecting area; 401. First support part; 402. Second support part; 403. Third support part; 404. Fourth support part; 405. Fifth support part. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. In the following detailed description, many specific details are set forth to provide a comprehensive understanding of the embodiments of this application for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. In the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concepts of this application.

[0026] Furthermore, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The terms "comprising," "including," etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0027] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0028] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0029] It should be noted that in the description of the embodiments of this utility model, the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] In related technologies, the usual method for fitting corner fittings to prefabricated wall panels involves creating a slot in the corner fitting to accommodate the prefabricated wall panel, which is then inserted into the slot. However, this method cannot achieve a flush, tight fit between the curved surface of the corner and the prefabricated wall panel. For example, a step may exist at the overlap between the corner fitting and the prefabricated wall panel, thus affecting the aesthetics of the wall surface.

[0032] Based on this, embodiments of this application provide a corner fitting, comprising: a main body, including a first connecting surface, a second connecting surface, and a concave arc-shaped surface; a first end of the concave arc-shaped surface is connected to a first end of the first connecting surface, a second end of the concave arc-shaped surface is connected to a first end of the second connecting surface, the first connecting surface extends toward the side protruding from the concave arc-shaped surface, and the second connecting surface extends toward the side protruding from the concave arc-shaped surface; a connecting portion, including a first connecting portion and a second connecting portion; the first connecting portion is disposed at the first connecting surface, and the second connecting portion is disposed at the second connecting surface; the first connecting portion is disposed between the two ends of the first connecting surface, and / or, the second connecting portion is disposed between the two ends of the second connecting surface.

[0033] In the embodiments of this application, the connecting part between the corner fitting and the prefabricated wall panel is located between the two ends of the first connecting surface and / or the second connecting surface, so that the mating structure between the prefabricated wall panel and the corner fitting is in a position that is not visible after installation. As long as the height of the first connecting surface and the second connecting surface of the main body is consistent with the thickness of the prefabricated wall panel, it can be ensured that the outer surface of the prefabricated wall panel is flush with the concave surface of the concave arc surface after installation, realizing a smooth transition between the prefabricated wall panel and the corner fitting, avoiding the formation of a step between the prefabricated wall panel and the corner fitting, and greatly improving the aesthetics of the wall surface; in addition, it can also prevent dust accumulation at the step during long-term use.

[0034] In the embodiments of this application, in order to ensure visual effect and at the same time consider the safety requirements in special scenarios such as age-friendly, the concave surface of the concave arc surface is designed as a smooth curved surface, which can be a circular arc, an elliptical arc, a parabola, a multi-segment continuous arc, a free curve, etc. Its specific shape can be designed according to actual needs, and there are no restrictions here.

[0035] In the embodiments of this application, the height of the first connecting surface, i.e., the length from the first end to the second end of the first connecting surface, is equal to the thickness of the prefabricated wall panel, so that after the prefabricated wall panel is installed, its outer surface is flush with the concave surface of the concave arc-shaped surface, ensuring a tight fit. Similarly, the height of the second connecting surface, i.e., the length from the first end to the second end of the second connecting surface, is also equal to the thickness of the prefabricated wall panel, so that after the prefabricated wall panel is installed, its outer surface is flush with the concave surface of the concave arc-shaped surface, ensuring a tight fit.

[0036] Figure 1 A schematic diagram illustrating a first structure of a corner fitting according to an embodiment of this application is shown, such as... Figure 1 As shown, the first connecting surface 101 and the second connecting surface 102 are located at both ends of the concave arc surface 103 and form a set angle with the concave arc surface 103. In the embodiments of this application, the concave arc surface 103 is a quarter-circle arc to facilitate processing and ensure a smooth transition between the concave arc surface and the prefabricated wall panel after installation, ensuring visual aesthetics. In some other embodiments, the arc angle corresponding to the concave arc surface can also be other angles. The first end of the first connecting surface 101 is connected to the first end of the concave arc surface 103 and is perpendicular to the tangent at the first end of the concave arc surface 103 to ensure that it is perpendicular to the wall or leveling joists during installation; the first end of the second connecting surface 102 is connected to the second end of the concave arc surface 103 and is perpendicular to the tangent at the second end of the concave arc surface to ensure that it is perpendicular to the wall or leveling joists during installation. It should be noted that "perpendicular" in the embodiments of this application refers to the included angle between the two. , This is the error angle, and its specific value can be set according to the actual situation.

[0037] In embodiments of this application, at least one of the first connecting portion and the second connecting portion is designed to be in an invisible position between the two ends of the connecting surface after the prefabricated wall panel is installed, in order to improve aesthetics. The structures of the first connecting portion and the second connecting portion may be the same or different. Figure 1 In this design, both the first and second connecting parts are located between the two ends of the connecting surface, and they have the same structure, both being protrusions protruding from the connecting surface. Specifically, the first connecting part is a first protrusion 201 protruding from the first connecting surface 101, and the second connecting part is a second protrusion 202 protruding from the second connecting surface 102. The protrusions can be rectangular, conical, or other shapes. Corresponding grooves matching the shape and size of the protrusions can be made on the prefabricated wall panel. During installation, the protrusions are embedded in the grooves to achieve a tight fit between the prefabricated wall panel and the corner fittings.

[0038] In the embodiments of this application, the first connecting part and / or the second connecting part may also be designed as an inwardly recessed slot. In this case, the first connecting part is a slot recessed toward the inside of the first connecting surface 101, and / or the second connecting part is a slot recessed toward the inside of the second connecting surface 102. Figure 3 A schematic diagram illustrating a second structure of the corner fitting according to an embodiment of this application is shown, such as... Figure 3 As shown, taking the second connecting part as an example, it is different from... Figure 1 The protrusion protruding from the second connecting surface Figure 3The second connecting part is an inwardly recessed slot 203. During installation, the slot can be inserted into a prefabricated wall panel with protrusions on the edge, or it can be installed and assembled with a prefabricated wall panel with the same groove by means of an additional I-beam.

[0039] In the embodiments of this application, when both the first connecting part and the second connecting part are located between the two ends of the connecting surface, after the prefabricated wall panel is installed, both sides of the corner fitting can be flush and tightly fitted with the prefabricated wall panel, ensuring aesthetics after installation. The structures of the first connecting part and the second connecting part can be the same or different; for example, they can both be as follows: Figure 1 The bumps shown can also all be like... Figure 3 The slot shown in the second connecting part can also be either a protrusion or a slot, which can be flexibly selected according to the actual installation scenario.

[0040] In the embodiments of this application, one of the first connecting part and the second connecting part can also be designed as a stop 204 located at the first end of the corresponding connecting surface. In this case, an installation groove 205 for accommodating the prefabricated wall panel is formed between the connecting part and the corresponding connecting surface. One of the two connecting surfaces of the corner fitting can achieve a tight fit with the prefabricated wall panel, improving aesthetics, while the other allows the prefabricated wall panel to be inserted into the installation groove for easy and quick installation. The purpose of this design is that prefabricated wall panels are usually standard panels with fixed dimensions. In actual installation, the last panel needs to be cut or customized to meet the site size requirements. By designing the connecting surface as a mating method for inserting the prefabricated wall panel into the installation groove, the cut prefabricated wall panel can be directly inserted into the installation groove for installation without the need for additional non-standard panels, thus improving construction efficiency.

[0041] When the first or second connecting part is designed to be located at the first end of the corresponding connecting surface, in order to overcome the problem of steps at the overlapping surface affecting aesthetics, in the embodiments of this application, when the first connecting part is blocked, the first connecting part extends along the first end of the concave arc surface by a predetermined length, and the first surface of the first connecting part forms a complete arc surface with the concave surface of the concave arc surface; or, the second connecting part extends along the second end of the concave arc surface by a predetermined length, and the first surface of the second connecting part forms a complete arc surface with the concave surface of the concave arc surface. The outer surface of the connecting part and the concave surface of the concave arc surface are designed as a complete quarter-circle arc structure, and the thickness of the connecting part gradually decreases from near the concave arc surface to away from the concave arc surface. On the one hand, a smooth transition can be formed between the concave arc surface and the connecting part, ensuring aesthetics; on the other hand, by making the connecting part part as part of the arc structure, the thickness of the connecting part gradually decreases from near the concave arc surface to away from the concave arc surface, so as to minimize the thickness of the end of the connecting part, thereby minimizing the step height and improving aesthetics.

[0042] The explanation will take the first connecting part as an example. See [link / reference]. Figure 3 The first connecting part is a stop 204, which is disposed at the first end of the first connecting surface 101, that is, the end connected to the concave arc surface 103. The first connecting part extends upward along the first end of the concave arc surface for a certain length. At this time, the first surface (outer surface, i.e., Figure 3 The right side of the middle stop block 204 and the concave surface of the concave arc-shaped surface together form a complete quarter circle arc. Because the second surface of the first connecting part (the inner surface, i.e., Figure 3 The left side of the middle block 204 is the mating surface with the prefabricated wall panel, so the corresponding edge of this surface is a straight edge, and the width of the first connecting part gradually decreases from the bottom to the end. In the embodiment of this application, the end of the block 204 is designed with an arc transition, so that the transition between the first surface of the block 204 and the prefabricated wall panel is natural, avoiding the formation of steps or other structures that affect the aesthetics.

[0043] The corner fittings are also fixedly connected to the wall or leveling joists via fixing parts. To ensure reliable fixing of the corner fittings, at least one fixing part is required for the connection. In the embodiments of this application, a first fixing part 301 is also included, which is connected to the second end of the first connecting surface 101. The first fixing part 301 and the side of the first connecting surface 101 where the first connecting part is provided form a first connecting area 302 for cooperating with the prefabricated wall panel. And / or, a second fixing part 303 is also included, which is connected to the second end of the second connecting surface 102. The second fixing part 303 and the side of the second connecting surface 102 where the second connecting part is provided form a second connecting area 304 for cooperating with the prefabricated wall panel.

[0044] The first fixing part 301 and / or the second fixing part 303 are parallel to the wall or leveling joist. The structures of the first fixing part 301 and the second fixing part 303 can be identical. In the embodiments of this application, the first fixing part 301 includes a first mounting part having a first countersunk groove 3011, the opening of the first countersunk groove 3011 facing the first connecting area 302, and / or, the second fixing part 303 includes a second mounting part having a second countersunk groove 3031, the opening of the second countersunk groove 3031 facing the second connecting area 304. The end of the first fixing part 301 may also be provided with a first support part 3012 facing away from the first connecting area 302, the height of the first support part 3012 matching the depth of the first countersunk groove 3011 to support the first fixing part 301. The end of the second fixing part may also be provided with a second support part 3032 facing away from the second connecting area, the height of the second support part 3032 matching the depth of the second countersunk groove 3031 to support the second fixing part. In some other embodiments, the first fixing part and / or the second fixing part may not have countersunk slots, but instead have screw holes directly opened, and the screw holes and the corresponding threaded holes on the leveling keel are fixed by screws.

[0045] In the embodiments of this application, the curvature of the concave arc surface of the corner fitting is determined according to actual installation requirements. The radius corresponding to the arc structure of its concave surface can be 20mm, 30mm, 50mm, etc. As the radius increases, the size of the corner fitting also increases. To ensure structural strength, a support portion can also be provided to support the overall structure of the corner fitting. Figure 1 As shown in the diagram, the radius of the arc is 20mm. In this case, no supporting structure is needed; the main body itself, in conjunction with the fixing parts, can provide stable support. Figure 3 As shown, the radius of the arc in the figure is 30mm. To ensure structural strength, a first support portion 401 and a second support portion 402, perpendicular to each other, are provided between the first connecting surface and the second connecting surface. According to an embodiment of this application, the first support portion 401 is connected to the second end of the first connecting surface 101, and the second support portion 402 is connected to the second end of the second connecting surface 102. The first support portion 401 and the second support portion 402 are connected, and a cavity is formed between the first support portion 401, the second support portion 402, and the main body.

[0046] In some embodiments, a reinforcing structure may be further added between the first support portion, the second support portion, and the concave arc-shaped surface. Figure 5 A schematic diagram illustrating a third structure of the corner fitting according to an embodiment of this application is shown. See also: Figure 5In this figure, the radius of the arc is 50mm. The support structure further includes a third support portion 403. One end of the third support portion 403 is connected to the junction of the first support portion 401 and the second support portion 402, and the other end is connected to the concave arc surface 103. The inclined third support portion 403 effectively reinforces the concave arc surface 103. In other embodiments, it further includes a fourth support portion 404 and a fifth support portion 405. One end of the fourth support portion 404 is connected to the first support portion 401, and the other end is connected to the fifth support portion 405. One end of the fifth support portion 405 is connected to the fourth support portion 404, and the other end is connected to the second support portion 402. The third support portion 403 is connected at the junction of the fourth support portion 404 and the fifth support portion 405. The first support portion 401 and the fourth support portion 404, the fourth support portion 404 and the fifth support portion 405, and the fifth support portion 405 and the second support portion 402 are all perpendicular to each other. Adding a fourth and fifth support section facilitates processing and creates a gap between the fourth and fifth support sections and the wall, which can be used to meet wiring needs, improving space utilization. Furthermore, hiding the wires at the bottom of the corner fittings ensures aesthetics and facilitates disassembly and assembly.

[0047] In the embodiments of this application, the concave surface of the concave arc-shaped surface has a decorative layer 1031. The decorative layer 1031 can be of various colors, or it can be a film of the same color as the prefabricated wall panel, which ensures aesthetics and also prevents scratches on the concave arc-shaped surface, improving structural clarity. As an example, the decorative layer can be a decorative film, such as polyvinyl chloride (PVC) coated cloth or PVDF (polyvinylidene fluoride) film, or it can be a decorative paper.

[0048] In the embodiments of this application, the overall structure of the internal corner fitting is made of metal, such as aluminum alloy, which can ensure structural strength and facilitate production and processing.

[0049] In the embodiments of this application, a wall panel system is further provided based on the corner fittings provided above. Figure 2 This schematically illustrates a wall panel system after installation of a first structure of the corner fitting according to an embodiment of this application; Figure 4 This schematically illustrates a wall panel system installed according to a second structure of the corner fitting according to an embodiment of this application; Figure 6 This schematically illustrates a wall panel system installed according to a third structure of the corner fitting according to an embodiment of this application; see also Figure 2 , Figure 4 , Figure 6The wall panel system includes a first prefabricated wall panel 2, a second prefabricated wall panel 3, and the aforementioned corner fitting 1. The first prefabricated wall panel 2 has a first splicing part at its first end that mates with the first connecting part of the corner fitting 1. The second prefabricated wall panel 3 has a second splicing part at its second end that mates with the second connecting part of the corner fitting 1. The corner fitting 1 is fixed to the wall. The first prefabricated wall panel 2 is connected to the first connecting part through the first splicing part, and the second prefabricated wall panel 3 is connected to the second connecting part through the second splicing part.

[0050] When the first connecting part is a protrusion protruding from the first connecting surface, the first splicing part can be an inwardly recessed groove, the shape and size of which match the protrusion. During installation, the protrusion is simply inserted into the groove. When the second connecting part is a protrusion protruding from the second connecting surface, the second splicing part can be an inwardly recessed groove, the shape and size of which match the protrusion. During installation, the protrusion is simply inserted into the groove.

[0051] When the first connecting part is a recessed groove facing the inner side of the first connecting surface, the first splicing part can be a protrusion extending from the side of the prefabricated wall panel. The shape and size of the protrusion match the groove, and during installation, the protrusion is simply inserted into the groove. When the second connecting part is a recessed groove facing the inner side of the second connecting surface, the second splicing part can be a protrusion extending from the side of the prefabricated wall panel. The shape and size of the protrusion match the groove, and during installation, the protrusion is simply inserted into the groove.

[0052] Furthermore, when the first connecting part and / or the second connecting part are slots, the I-beam 4 can also be used to connect the internal corner fitting to the prefabricated wall panel. In this case, the prefabricated wall panel has a groove corresponding to the position of the I-beam. In the embodiments of this application, when the first connecting part is a slot, it also includes a first I-beam, the first splicing part is a first groove, and the I-beam connects the slot and the first groove; and / or, when the second connecting part is a slot, it also includes a second I-beam, the second splicing part is a second groove, and the I-beam connects the slot and the second groove.

[0053] When the first connecting part (i.e., the first connecting portion) extends a predetermined length along the first end of the concave arc surface, and the first surface of the first connecting portion forms a complete arc surface with the concave surface of the concave arc surface, the first splicing part can be of any shape, for example, it can be a cut flat surface. During installation, the first splicing part of the prefabricated wall panel can be directly inserted into the first connecting area. When the second connecting part is a stop block, i.e., the second connecting portion extends a predetermined length along the second end of the concave arc surface, and the first surface of the second connecting portion forms a complete arc surface with the concave surface of the concave arc surface, the second splicing part can be of any shape, for example, it can be a cut flat surface. During installation, the second splicing part of the prefabricated wall panel can be directly inserted into the second connecting area.

[0054] Those skilled in the art will understand that the features described in the various embodiments of this application can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in this application. In particular, the features described in the various embodiments of this application can be combined and / or combined in various ways without departing from the spirit and teachings of this application. All such combinations and / or combinations fall within the scope of this application.

[0055] The embodiments of this application have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of this application. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this application is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this application, and all such substitutions and modifications should fall within the scope of this application.

Claims

1. A corner fitting, characterized in that, include: The main body includes a first connecting surface, a second connecting surface, and a concave arc-shaped surface; The first end of the concave arc-shaped surface is connected to the first end of the first connecting surface, and the second end of the concave arc-shaped surface is connected to the first end of the second connecting surface. The first connecting surface extends toward the convex side of the concave arc-shaped surface, and the second connecting surface extends toward the convex side of the concave arc-shaped surface. The connecting portion includes a first connecting portion and a second connecting portion; the first connecting portion is disposed at the first connecting surface, and the second connecting portion is disposed at the second connecting surface; the first connecting portion is disposed between the two ends of the first connecting surface, and / or the second connecting portion is disposed between the two ends of the second connecting surface.

2. The corner fitting according to claim 1, characterized in that, The first connecting portion is a protrusion protruding from the first connecting surface, and / or the second connecting portion is a protrusion protruding from the second connecting surface.

3. The corner fitting according to claim 1, characterized in that, The first connecting part is a groove recessed towards the inside of the first connecting surface, and / or the second connecting part is a groove recessed towards the inside of the second connecting surface.

4. The corner fitting according to claim 1, characterized in that, The first connecting portion extends along the first end of the concave arc surface by a predetermined length, and the first surface of the first connecting portion forms a complete arc surface with the concave surface of the concave arc surface; or, the second connecting portion extends along the second end of the concave arc surface by a predetermined length, and the first surface of the second connecting portion forms a complete arc surface with the concave surface of the concave arc surface.

5. The corner fitting according to claim 1, characterized in that, It also includes a first fixing part, which is connected to the second end of the first connecting surface. The first fixing part and the side of the first connecting surface where the first connecting part is provided form a first connecting area for cooperating with the prefabricated wall panel. And / or, it also includes a second fixing part, which is connected to the second end of the second connecting surface. The second fixing part and the side of the second connecting surface where the second connecting part is provided form a second connecting area for cooperating with the prefabricated wall panel.

6. The corner fitting according to claim 5, characterized in that, The first fixing part includes a first mounting part having a first countersunk groove with the opening of the first countersunk groove facing the first connection area, and / or the second fixing part includes a second mounting part having a second countersunk groove with the opening of the second countersunk groove facing the second connection area.

7. The corner fitting according to claim 1, characterized in that, It also includes a first support portion and a second support portion. The first support portion is connected to the second end of the first connecting surface, and the second support portion is connected to the second end of the second connecting surface. The first support portion and the second support portion are connected, and a cavity is formed between the first support portion, the second support portion and the main body portion.

8. The corner fitting according to any one of claims 1 to 7, characterized in that, The concave surface of the concave arc-shaped surface has a decorative layer.

9. A wall panel system, characterized in that, The device includes a first prefabricated wall panel, a second prefabricated wall panel, and a corner fitting as described in any one of claims 1 to 8. The first prefabricated wall panel has a first splicing portion at its first end that mates with a first connecting portion of the corner fitting, and the second prefabricated wall panel has a second splicing portion at its second end that mates with a second connecting portion of the corner fitting. The corner fitting is fixed to the wall. The first prefabricated wall panel is connected to the first connecting portion via the first splicing portion, and the second prefabricated wall panel is connected to the second connecting portion via the second splicing portion.

10. The wall panel system according to claim 9, characterized in that, When the first connecting part is a slot, it also includes a first I-beam, the first splicing part is a first groove, and the I-beam connects the slot and the first groove. And / or, when the second connecting part is a slot, it also includes a second I-beam, the second splicing part is a second groove, and the I-beam connects the slot and the second groove.

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