Exterior corner structure and wall panel system

Abstract

The application provides a wallboard system and a external corner structure. The external corner structure comprises a fixed part, a connecting part, a first elastic member and a second elastic member. The fixed part comprises a first surface, a second surface and a concave arc surface. The first surface and the second surface form an included angle. The two ends of the concave arc surface are connected with the first surface and the second surface respectively. One end of the connecting part is connected with the first surface and the second surface. The connecting part and the first surface form a first insertion area. The connecting part and the second surface form a second insertion area. The extension line of the connecting part coincides with the angle bisector of the included angle. The first elastic member is located on the first surface and extends from the first surface to the first insertion area. The second elastic member is located on the second surface and extends from the second surface to the second insertion area. The external corner structure can realize accurate connection of the wallboard, reduce construction difficulty, shorten construction time and be suitable for efficient assembly type decoration process.

Description

Technical Field

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

[0002] In the installation of prefabricated wall panels at the external corners of walls, the main methods currently are to butt together the perpendicular panels; or to cut the sides of two panels at a 45° angle and then fit them together tightly, followed by sealing the joint with grout or adhesive; or to attach PVC, aluminum alloy, or stainless steel corner strips to the surface of the two panels for decorative finishing at the junction.

[0003] The existing method of assembling the boards together has the following problems: 1. Vertically butt-jointing the boards exposes the sides, creating color differences and affecting aesthetics; 2. Cutting the boards at a 45° angle requires high skill from workers, easily damaging the boards or causing chipping at the edges, severely affecting aesthetics, and increasing material waste if mistakes are made; 3. In practice, strictly adhering to the 45° chamfer creates a thin and sharp right angle, posing a risk of cuts and being unable to withstand impacts. If the chamfer is slightly thickened, a shallow fish-mouth shape will form after splicing, affecting aesthetics.

[0004] Therefore, in order to improve the efficiency and quality of prefabricated decoration in the treatment of external corners, it is necessary to further explore simpler, more reliable and easier-to-operate connection technologies and processes to adapt to the current rapid and precise development needs of prefabricated decoration. Utility Model Content

[0005] In view of the above problems, this application provides an external corner structure. Using the external corner structure provided by this application, precise connection of wall panels can be achieved, reducing construction difficulty, shortening construction time, and is suitable for efficient prefabricated decoration processes.

[0006] According to the first aspect of this application, a corner structure is provided, comprising:

[0007] The fixing part includes a first surface, a second surface and a concave arc-shaped surface, wherein the first surface and the second surface form an angle, and the two ends of the concave arc-shaped surface are respectively connected to the first surface and the second surface;

[0008] A connecting part, one end of which is connected to the first surface and the second surface, and a first insertion area is formed between the connecting part and the first surface, and a second insertion area is formed between the connecting part and the second surface, and the extension line of the connecting part coincides with the angle bisector of the included angle;

[0009] A first elastic element is located on the first surface and extends from the first surface toward the first insertion area;

[0010] The second elastic element is located on the second surface and extends from the second surface toward the second insertion area.

[0011] According to an embodiment of this application, the fixing part further includes:

[0012] A first connecting surface is used to connect one end of the first surface and the concave arc-shaped surface; the first connecting surface includes a plane and a curved surface; and / or...

[0013] A second connecting surface is used to connect the second surface and the other end of the concave arc-shaped surface. The second connecting surface includes a plane and a curved surface.

[0014] According to an embodiment of this application, the distance between the first elastic member and the connecting portion is less than the distance between the first elastic member and the first connecting surface; and / or, the distance between the second elastic member and the connecting portion is less than the distance between the second elastic member and the second connecting surface.

[0015] According to embodiments of this application, a support portion is also included, the support portion comprising:

[0016] The first support plate is parallel to the first surface;

[0017] The second support plate is parallel to the second surface;

[0018] One end face of the first support plate is connected to one end face of the second support plate and is connected to the other end of the connecting part; the area between the first support plate and the second support plate is the mounting area, and the opening direction of the mounting area is opposite to the orientation of the concave arc surface.

[0019] According to an embodiment of this application, the side of each of the first elastic member and the second elastic member away from the mounting area is a convex arc-shaped surface.

[0020] According to an embodiment of this application, both the first support plate and the second support plate are provided with countersunk nail grooves, and the openings of the countersunk nail grooves are away from the mounting area.

[0021] According to an embodiment of this application, a positioning groove is provided in the countersunk pin groove, and the positioning groove is located on the axis of symmetry of the countersunk pin groove.

[0022] According to an embodiment of this application, both the first support plate and the second support plate are provided with support grooves. The opening of the support groove is opposite to the opening of the countersunk groove, and the support groove is located at the end of the countersunk groove away from the connecting part.

[0023] According to an embodiment of this application, the angle formed by the first surface and the second surface is a right angle.

[0024] According to a second aspect of this application, a wall panel system is provided, including a first wall panel, a second wall panel, and an external corner structure as described in any one of the above descriptions;

[0025] The first wall panel and the second wall panel each have a recessed groove at their ends. The first elastic element and the second elastic element are respectively inserted into the groove so that the first wall panel and the second wall panel are connected by the external corner structure.

[0026] The above one or more embodiments have the following beneficial effects:

[0027] 1. The external corner structure provided in this application includes a first elastic element and a second elastic element. One end of the wall panel to be installed has a slot. When installing the wall panel, the first elastic element and the second elastic element are embedded in the slot, which can complete the precise connection of the wall panel, reduce the construction difficulty and shorten the construction time.

[0028] 2. The fixing part has a concave arc surface. When installing the wall panel, the concave arc surface is located at the external corner. On the one hand, it can reduce the degree of impact when the user accidentally hits the external corner, protecting the user's safety; on the other hand, the concave arc surface adds a curved element to the building space, enhancing the aesthetics and artistry of the space, and meeting people's personalized and diversified needs for interior decoration.

[0029] 3. When installing wall panels using the external corner structure provided in this application, the end face of the wall panel is in contact with the first and second surfaces of the fixing part, which can avoid exposing the end face of the wall panel and improve the aesthetics.

[0030] 4. The external corner structure and the wall panels to be installed provided in this application can be industrially produced in the factory. Only simple installation is required on the decoration site, which is suitable for efficient prefabricated decoration process. Attached Figure Description

[0031] 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:

[0032] Figure 1 The schematic diagram illustrates the structure of the external corner structure according to an embodiment of this application;

[0033] Figure 2 The diagram illustrates the installation of the external corner structure according to an embodiment of this application.

[0034] It should be noted that, for clarity, the dimensions of the overall / partial structure or the overall / partial region in the drawings used to describe the embodiments of this application may be enlarged or reduced, that is, these drawings are not drawn to actual scale.

[0035] Component designation explanation

[0036] 11 First elastic element 12 Second elastic element 21 First surface 22 Second surface 23 Concave arc surface 24 First connecting surface 25 Second connecting surface 31 First support plate 32 Second support plate 30 Countersunk groove 40 positioning groove 50 support groove 60 shock-absorbing pads 70 Connection part 100 Installation area 110 First insertion area 120 Second insertion area 200 Leveling keel 300 Wall 410 First wall panel 420 Second wall panel 401 Card slot 500 Fasteners Detailed Implementation

[0037] The embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of this application. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of this application for ease of explanation. However, it will be apparent that one or more embodiments may be implemented without these specific details. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of this application.

[0038] 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.

[0039] 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.

[0040] 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.).

[0041] In this technology, two wall panels intended for installation at the external corner of the wall need to be cut to a specific angle to achieve the desired installation. On one hand, this requires a high level of skill from the construction workers, making the installation difficult and time-consuming. On the other hand, this installation method is not suitable for efficient prefabricated construction processes and does not align with the future development trend of the decoration industry.

[0042] An embodiment of this application provides a positive angle structure, including: a fixing part, including a first surface, a second surface and a concave arc surface, the first surface and the second surface forming an angle, and the two ends of the concave arc surface being connected to the first surface and the second surface respectively; a connecting part, one end of the connecting part being connected to the first surface and the second surface, and a first insertion area being formed between the connecting part and the first surface, and a second insertion area being formed between the connecting part and the second surface, the extension line of the connecting part coinciding with the angle bisector of the included angle; a first elastic member, located on the first surface and extending from the first surface to the first insertion area; and a second elastic member, located on the second surface and extending from the second surface to the second insertion area.

[0043] According to an embodiment of this application, the external corner structure includes a first elastic element and a second elastic element. One end of the wall panel to be installed has a groove. During wall panel installation, the first elastic element and the second elastic element are embedded in the groove, thereby completing the wall panel installation. Using the external corner structure provided by this application, precise connection of wall panels can be achieved without cutting the wall panel into a 45° angle along the external corner line, reducing construction difficulty and shortening construction time. Furthermore, both the external corner structure and the wall panel to be installed provided by this application can be industrially produced in a factory, requiring only simple installation on-site. This is suitable for efficient prefabricated decoration processes and aligns with future development trends in the decoration industry.

[0044] Figure 1 A schematic diagram of the external corner structure according to an embodiment of this application is shown.

[0045] like Figure 1 As shown, the fixing part includes a first surface 21, a second surface 22 and a concave arc surface 23. The first surface 21 and the second surface 22 form an angle, and the two ends of the concave arc surface 23 are connected to the first surface 21 and the second surface 22 respectively.

[0046] According to an embodiment of this application, both the first surface 21 and the second surface 22 are planar. During wall panel installation, the first surface 21 and the second surface 22 respectively contact the end faces of two adjacent wall panels, thereby avoiding exposure of the end faces of the wall panels and improving aesthetics. Furthermore, waterproof strips (not shown in the figures) can be provided on the first surface 21 and the second surface 22. When the wall panel is used in environments with high waterproofing requirements, the waterproof strips can increase the sealing between the corner structure and the wall panel, achieving a certain waterproofing effect without affecting its thickness or aesthetics.

[0047] According to an embodiment of this application, during wall panel installation, the concave arc surface 23 is located at the external corner. When the wall panel is subjected to external impact or bears its own load, the concave arc surface 23 can disperse and transmit stress, preventing stress concentration at the external corner. This reduces the risk of cracking or breakage at the external corner, improves the overall structural stability and mechanical properties of the wall panel, and extends its service life. Furthermore, the concave arc surface 23 breaks away from the traditional right-angled lines of external corners, adding curved elements to the architectural space, enhancing its aesthetics and artistry, and meeting people's personalized and diverse needs for interior decoration.

[0048] According to the embodiments of this application, the concave arc surface 23 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.

[0049] According to an embodiment of this application, one end of the concave arc-shaped surface 23 is connected to the first surface 21 via a first connecting surface 24, which includes a plane and a curved surface. Specifically, the first surface 21 is connected to the concave arc-shaped surface 23 sequentially via a plane and a curved surface, so that after the wall panel is installed, the surface of the wall panel is flush with the plane in the first connecting surface 24, improving the aesthetics of the wall. In addition, the connection between the curved surface in the first connecting surface 24 and the concave arc-shaped surface 23 can reduce the degree of impact when the user accidentally bumps into the corner, protecting the user's safety.

[0050] According to an embodiment of this application, the other end of the concave arc-shaped surface 23 is connected to the second surface 22 via a second connecting surface 25. The second connecting surface 25 has the same shape as the first connecting surface 24, also including a plane and a curved surface. Specifically, the second surface 22 is connected to the concave arc-shaped surface 23 sequentially via a plane and a curved surface, so that after the wall panel is installed, the surface of the wall panel is flush with the plane in the second connecting surface 25, improving the aesthetics of the wall. In addition, the connection between the curved surface in the second connecting surface 25 and the concave arc-shaped surface 23 can reduce the degree of impact when the user accidentally bumps into the corner, protecting the user's safety.

[0051] According to embodiments of this application, a decorative layer (not shown in the figures) is provided on the concave arc-shaped surface 23, the first connecting surface 24, and the second connecting surface 25. On one hand, the decorative layer can decorate the external corner, enhancing the aesthetics of the external corner structure, and is simple in structure and easy to install; on the other hand, the decorative layer can improve the weather resistance of the external corner structure, prevent deformation of the external corner, and thus increase the service life of the external corner. 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.

[0052] According to an embodiment of this application, the external angle formed by the two wall panels is a right angle, therefore, as Figure 1As shown, the angle formed by the first surface 21 and the second surface 22 is a right angle, that is, the first surface 21 and the second surface 22 are perpendicular. It should be noted that, in this embodiment, "perpendicular" means that the angle between them is 90°. , This is the error angle, which can be 0°, 5°, 10°, etc. The specific value can be set according to the actual situation.

[0053] According to the embodiments of this application, the fixing part can be made of metal material. Metal material has good ductility, is easy to grind and manufacture, and has good rigidity, which can avoid deformation of the external corner structure.

[0054] like Figure 1 As shown, the external corner structure provided in this embodiment also includes a support portion, which includes a first support plate 31 and a second support plate 32. The first support plate 31 is parallel to the first surface 21, and the second support plate 32 is parallel to the second surface 22. One end face of the first support plate 31 is connected to one end face of the second support plate 32. In an optional embodiment, the first surface 21 is perpendicular to the second surface 22; therefore, the first support plate 31 is perpendicular to the second support plate 32.

[0055] According to an embodiment of this application, the area between the first support plate 31 and the second support plate 32 is the mounting area 100, and the opening direction of the mounting area 100 is opposite to the orientation of the concave arc-shaped surface. When installing the wall panel, the first support plate 31 and the second support plate 32 are respectively attached to two adjacent surfaces of the wall, that is, the mounting area 100 is used to accommodate the wall.

[0056] According to an embodiment of this application, both the first support plate 31 and the second support plate 32 are provided with countersunk nail grooves 30, the openings of which are opposite to the mounting area 100. The countersunk nail grooves 30 are used to install fasteners to fix the external corner structure to the wall.

[0057] According to an embodiment of this application, the countersunk pin groove 30 has a positioning groove 40 located on the axis of symmetry of the countersunk pin groove 30, which is used to position the fastener during installation.

[0058] According to an embodiment of this application, both the first support plate 31 and the second support plate 32 are provided with support grooves 50. The openings of the support grooves 50 are opposite to the openings of the countersunk pin grooves 30, and the support grooves 50 are located at the end of the countersunk pin grooves 30 away from the connecting portion 70. The support grooves 50 can strengthen the firmness of the first support plate 31 and the second support plate 32, while ensuring the stability of the overall external corner structure after installation.

[0059] like Figure 1As shown, the external corner structure provided in this embodiment includes a connecting portion 70. One end of the connecting portion 70 is connected to the first surface 21 and the second surface 22, and the other end is connected to the first support plate 31 and the second support plate 32. According to the embodiment of this application, a first insertion area 110 is formed between the connecting portion 70 and the first surface 21, and a second insertion area 120 is formed between the connecting portion 70 and the second surface 22. The extension line of the connecting portion 70 coincides with the angle bisector of the angle between the first surface 21 and the second surface 22. The two sides of the connecting portion 70 are respectively used to install two adjacent wall panels.

[0060] like Figure 1 As shown, the first elastic member 11 is located on the first surface 21 and extends from the first surface 21 to the first insertion area 110; the second elastic member 12 is located on the second surface 22 and extends from the second surface 22 to the second insertion area 120. When installing the wall panel, the first elastic member 11 and the second elastic member 12 are inserted into the wall panel to connect with it.

[0061] According to embodiments of this application, the first surface 21 is arranged parallel to the second elastic member 12, and the second surface 22 is arranged parallel to the first elastic member 11. In an optional embodiment, the external angle formed by the two wall panels is a right angle; therefore, as... Figure 1 As shown, the first elastic element 11 is perpendicular to the first surface 21, and the second elastic element 12 is perpendicular to the second surface 22.

[0062] According to an embodiment of this application, the distance between the first elastic member 11 and the connecting portion 70 is less than the distance between the first elastic member 11 and the first connecting surface 24; the distance between the second elastic member 12 and the connecting portion 70 is less than the distance between the second elastic member 12 and the second connecting surface 25. That is, the first elastic member 11 and the second elastic member 12 are positioned at locations with a larger thickness in the fixing portion, effectively buffering external impact forces, preventing damage to the fixing portion due to localized stress concentration, and also providing a certain degree of vibration damping, enhancing the stability and reliability of the overall structure, and extending the service life of the equipment.

[0063] According to the embodiments of this application, the first elastic element 11 and the second elastic element 12 are both made of elastic materials, such as rubber, polyurethane elastomer, silicone rubber, etc. Since the first elastic element 11 and the second elastic element 12 are made of elastic materials, when the wall panel is installed or disassembled, the first elastic element 11 and the second elastic element 12 deform under force, which facilitates the installation and disassembly of the wall panel. Therefore, it is not necessary to cut the wall panel into a shape with a 45° angle along the external corner line, which reduces the construction difficulty, improves the construction accuracy, and is suitable for efficient prefabricated decoration process.

[0064] like Figure 1As shown, the sides of the first elastic element 11 and the second elastic element 12 away from the installation area 100 are both convex arc-shaped surfaces, while the sides close to the installation area 100 are both flat surfaces. This design facilitates wall panel installation and enhances the stability of the wall panel after installation. Taking the first elastic element 11 as an example, when installing the wall panel, the wall panel can be installed from the outside inwards towards the installation area 100. The first elastic element 11 deforms under the force of the wall panel, and the convex arc-shaped surface reduces the resistance generated by the first elastic element 11 on the wall panel, thus facilitating wall panel installation. After the wall panel is installed, since the side of the first elastic element 11 close to the installation area 100 is flat, the flat surface generates greater resistance to the wall panel, thereby preventing the wall panel from falling off.

[0065] According to the embodiments of this application, shock-absorbing pads 60 are provided on the side of the first elastic member 11 and the second elastic member 12 near the installation area 100, which are used to fill the gap between the wall panel and the first elastic member 11 and the second elastic member 12, prevent the corner structure from shaking with the wall panel, and ensure the stability of the overall corner structure after installation.

[0066] Based on the aforementioned external corner structure, this application also provides a wall panel system. The following will be combined with... Figure 2 The wall panel system is described in detail.

[0067] Figure 2 A schematic diagram of the structure of a wall panel system according to an embodiment of this application is shown.

[0068] like Figure 2 As shown, the wall panel system provided in this embodiment includes a first wall panel 410, a second wall panel 420, and a corner structure. The corner structure includes a fixing part, a first elastic member, and a second elastic member. For details, please refer to... Figure 1 As described above, it will not be repeated here.

[0069] According to an embodiment of this application, the ends of the first wall panel 410 and the second wall panel 420 each have a recessed groove 401, which are used to accommodate the first elastic member 11 and the second elastic member 12 in the external corner structure, respectively.

[0070] According to an embodiment of this application, the first elastic element 11 and the second elastic element 12 in the corner structure are respectively inserted into the slot 401, so that the first wall panel 410 and the second wall panel 420 are connected through the corner structure. The specific installation method is as follows:

[0071] First, the leveling keel 200 is installed on the wall 300 to form a leveling structure on the wall 300, so as to install the first wall panel 410, the second wall panel 420 and the external corner structure.

[0072] Next, the corner structure is installed at the external corner of the wall 300. Specifically, the corner structure is placed at the external corner of the wall 300, so that the first support plate 31 and the second support plate 32 are in contact with two adjacent surfaces of the wall 300, respectively; the fastener 500 is aligned with the positioning groove 40 and passes through the positioning groove 40 and the leveling joist 200 from the outside in, thereby fixing the corner structure to the wall 300. As an example, the fastener 500 can be a screw, pneumatic nail, or other component that can provide a fixing function.

[0073] Next, a first wall panel 410 and a second wall panel 420 are provided, and adhesive, such as structural adhesive, expanding foam, or PVC adhesive, is applied to the mounting surface of the wall panels to facilitate subsequent bonding with the leveling keel 200. According to an embodiment of this application, the end face of the wall panel between the slot 401 and the mounting surface is set as an inclined surface, and this inclined surface forms an angle greater than 90° with the mounting surface. When installing the first wall panel 410 and the second wall panel 420, this inclined surface cooperates with the convex arc-shaped surface of the first elastic member 11 or the second elastic member 12, which can reduce the resistance generated by the first elastic member 11 or the second elastic member 12 on the first wall panel 410 and the second wall panel 420.

[0074] Finally, the mounting surface of the wall panel is oriented towards the wall 300, so that the mounting surface of the wall panel is bonded to the wall 300. The first elastic element 11 and the second elastic element 12 are respectively inserted into the slots 401 of the first wall panel 410 and the second wall panel 420 to complete the installation.

[0075] The external corner structure provided in this embodiment is suitable for interior decoration. All components are industrially produced in the factory, and only simple installation is required on the decoration site. No skilled technicians are needed on site, and not much construction time is required, which realizes rapid construction and avoids the dirty situation of traditional decoration work sites.

[0076] 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 structure, characterized in that, include: The fixing part includes a first surface, a second surface and a concave arc-shaped surface, wherein the first surface and the second surface form an angle, and the two ends of the concave arc-shaped surface are respectively connected to the first surface and the second surface; A connecting part, one end of which is connected to the first surface and the second surface, and a first insertion area is formed between the connecting part and the first surface, and a second insertion area is formed between the connecting part and the second surface, and the extension line of the connecting part coincides with the angle bisector of the included angle; A first elastic element is located on the first surface and extends from the first surface toward the first insertion area; The second elastic element is located on the second surface and extends from the second surface toward the second insertion area.

2. The external corner structure according to claim 1, characterized in that, The fixing part also includes: A first connecting surface is used to connect one end of the first surface and the concave arc-shaped surface; the first connecting surface includes a plane and a curved surface; and / or... A second connecting surface is used to connect the second surface and the other end of the concave arc-shaped surface. The second connecting surface includes a plane and a curved surface.

3. The external corner structure according to claim 2, characterized in that, The distance between the first elastic element and the connecting portion is less than the distance between the first elastic element and the first connecting surface; and / or, the distance between the second elastic element and the connecting portion is less than the distance between the second elastic element and the second connecting surface.

4. The external corner structure according to claim 1, characterized in that, It also includes a support portion, which comprises: The first support plate is parallel to the first surface; The second support plate is parallel to the second surface; One end face of the first support plate is connected to one end face of the second support plate and is connected to the other end of the connecting part; the area between the first support plate and the second support plate is the mounting area, and the opening direction of the mounting area is opposite to the orientation of the concave arc surface.

5. The external corner structure according to claim 4, characterized in that, The side of each of the first elastic member and the second elastic member that is away from the mounting area is a convex arc-shaped surface.

6. The external corner structure according to claim 4, characterized in that, Both the first support plate and the second support plate are provided with countersunk nail grooves, and the openings of the countersunk nail grooves are away from the installation area.

7. The external corner structure according to claim 6, characterized in that, The countersunk screw groove is provided with a positioning groove, which is located on the axis of symmetry of the countersunk screw groove.

8. The external corner structure according to claim 6, characterized in that, Both the first support plate and the second support plate are provided with support grooves. The opening of the support groove is opposite to the opening of the countersunk pin groove, and the support groove is located at the end of the countersunk pin groove away from the connecting part.

9. The external corner structure according to claim 1, characterized in that, The angle formed by the first surface and the second surface is a right angle.

10. A wall panel system, characterized in that, It includes a first wall panel, a second wall panel, and a corner structure as described in any one of claims 1 to 9; The first wall panel and the second wall panel each have a recessed groove at their ends. The first elastic element and the second elastic element are respectively inserted into the groove so that the first wall panel and the second wall panel are connected by the external corner structure.

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