Corner installation structure

Abstract

A corner mounting structure comprises a mounting portion in the form of a profile and a decorative main portion in the form of a profile, a first concave-convex protrusion being arranged on the inner side surface of the mounting portion, the mounting portion being used to be mounted on a vertical wall facade, the decorative main portion being detachably connected to the mounting portion, and the decorative main portion being used to support a suspended top layer from below; characterized in that the decorative main portion comprises a horizontal wall body, and an upwardly protruding wall is arranged at the front end of the horizontal wall body, and when the decorative main portion is connected to the mounting portion, the decorative main portion can swing relative to the mounting portion, and the decorative main portion supports the suspended top layer from below the suspended top layer by means of the upwardly protruding wall or by means of the upwardly protruding wall and the horizontal wall body acting together.

Description

Technical Field

[0001] The invention relates to the technical field related to decorative profiles, and in particular to a corner mounting structure, which is suitable for connecting a ceiling with a wall corner. Background Art

[0002] As people's living conditions gradually improve, people's requirements for house decoration are also gradually increasing. In addition to setting a ceiling layer on the roof to increase the shape and pattern decoration of the roof, lighting equipment can also be set to adjust the atmosphere effect in the house. However, when installing a ceiling, there is always a problem of connection and transition between the ceiling and the vertical wall facade. In particular, the connection between the ceiling and the vertical wall facade often forms a large installation gap due to cutting problems or splicing reasons, and the edges of the ceiling are uneven, which greatly affects the overall installation effect of the ceiling. For this reason, people connect by setting a corner connecting strip structure at the corner. For example, the Chinese utility model patent with announcement number CN2437789Y discloses a decorative aluminum alloy profile for internal corners, which is composed of a decorative surface, a supporting surface and a bottom surface. The bottom surface is extended on one side of the supporting surface and then buckled inward to form a slot. The decorative surface is an arc surface or a plane, and a decorative line is opened on the decorative surface. The internal corner decorative aluminum alloy profile has a simple structure and can be directly buckled on the decorative surface during installation, which is convenient to install. The internal corner decorative aluminum alloy profile is connected to the wall facade through the supporting surface, and is connected to the ceiling using the slot. The bottom surface can be used to support the edge of the ceiling. Such a profile can not only support the ceiling, but also solve the problem of exposed cross-section of the ceiling.

[0003] Since the above-mentioned internal corner decorative aluminum alloy profile is an integrally formed structure, although its rigid structure is good, the angle between the supporting surface and the bottom surface of the profile is generally arranged vertically. In the actual installation environment, it is difficult to make the wall facade and the ceiling completely perpendicular. This can easily cause a gap to form between the supporting surface and the wall after installation, or between the bottom surface and the lower surface of the ceiling. Summary of the invention

[0004] When the conventional technology (CN2437789Y) of internal angle decorative aluminum alloy profile is used to connect the ceiling and the vertical wall facade, in addition to the above-mentioned problem of easily forming an installation gap between the supporting surface and the wall surface or between the bottom surface and the lower surface of the ceiling, the one-piece connecting component will also cause the problem of increased manufacturing cost during production and post-processing. For example, in order to improve the appearance of the product, it is necessary to perform surface processing on the exposed part (such as the decorative surface), but the one-piece structure will increase the processing area and increase the manufacturing cost; and in order to enable the connecting component to be conveniently connected to the wall, it is necessary to process the installation hole on the hanging part, which may cause wear on the exposed surface during the processing.

[0005] In view of the above technical problems, the present invention proposes a corner mounting structure, comprising a mounting portion in the shape of a profile and a decorative main body portion in the shape of a profile, wherein a first concave-convex protrusion is arranged on the inner side surface of the mounting portion, and the mounting portion is used to be mounted on a vertical wall facade, and the decorative main body portion can be detachably connected to the mounting portion, and the decorative main body portion is used to support the suspended top layer from below; it is characterized in that the decorative main body portion comprises a horizontal wall body, and an upwardly protruding wall is arranged at the front end of the horizontal wall body, and when the decorative main body portion is connected to the mounting portion, the decorative main body portion can swing relative to the mounting portion, and the decorative main body portion supports the suspended top layer from below the suspended top layer by means of the upwardly protruding wall or by means of the upwardly protruding wall and the horizontal wall body.

[0006] Among them, the mounting part includes a vertically arranged mounting wall, which can be connected to the vertical wall facade by screws or adhesive stickers; it can also be connected to the suspended top layer by being combined with the decorative main body part. A horizontal bent wall is also provided at the top of the mounting part. When the decorative main body part is connected to the mounting part, a coupling groove is formed between the horizontal bent wall of the mounting part and the horizontal wall of the decorative main body part, into which the suspended top layer board can be inserted.

[0007] Among them, a first concave-convex protrusion is arranged on the inner side surface of the mounting part, wherein the inner side surface refers to the surface of the mounting part facing the vertical wall facade, and the first concave-convex protrusion can increase the bonding ability to improve the bonding reliability and stability between the inner side surface of the mounting part and the vertical wall facade.

[0008] Among them, the decorative main body and the mounting part can be connected by the cooperation of a hook and a hook groove. In one embodiment, a hook groove is provided on the decorative main body, and a hook is provided on the mounting part. The hook groove and the hook can be hooked with each other so that the decorative main body can be installed on the mounting part; as an equivalent embodiment, the positions of the hook and the hook groove can be interchangeable; of course, this does not exclude other equivalent embodiments, such as the connection achieved by the cooperation of an axis and a hole.

[0009] The upwardly protruding wall is a thin-walled structure that is arranged on the horizontal wall and protrudes upward to support the suspended top layer. Its thickness is substantially the same as that of the horizontal wall, and its height is generally set between 1 mm and 8 mm. The upper protruding wall is used to form a closer line contact connection with the lower surface of the suspended top layer when the decorative main body is combined with the suspended top layer. Furthermore, the root thickness of the upwardly protruding wall is less than that of the rest of the wall so that it is easy to break. The upwardly protruding wall plays a role of adjustment, which is conducive to the corner installation structure to adapt to different installation environments.

[0010] The decorative main body is connected to the mounting part in a detachable manner, and they are relatively swingable. On the one hand, this allows the decorative main body to be easily installed on the mounting part, and on the other hand, it allows a certain installation gap between the decorative main body and the mounting part after the decorative main body is connected to the mounting part, so that the decorative main body can swing to a certain extent. Due to this swinging characteristic, combined with the shape of the decorative main body, the decorative main body and the suspended top layer have different supporting methods. For example, the suspended top layer can be supported only by the upward protruding wall, or the upward protruding wall and the horizontal wall can jointly support the suspended top layer from below the suspended top layer.

[0011] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present invention are:

[0012] First, through the structure that the decorative main body and the mounting part can be separated and relatively swung, and the upwardly protruding wall arranged at the front end of the horizontal wall body, when the decorative main body is combined with the suspended top layer, the upwardly protruding wall at the front end can be combined with the lower surface of the suspended top layer to form a line contact with a tighter connection effect. Compared with the prior art (CN2437789Y) that supports the suspended top layer by the bottom surface, the technical solution of the present invention can reduce the installation gap between the decorative main body and the suspended top layer;

[0013] Second, the decorative main body can swing relative to the mounting part. This connection structure is conducive to reducing the difficulty of connecting and installing the two, and on the other hand, it allows the decorative main body to have a certain degree of swing adaptability, so that the decorative main body can be supported by the upward protruding wall to support the suspended top layer, and can also be slightly swung downward by the decorative main body to approach the vertical wall facade, while reducing the gap between the decorative main body and the suspended top layer and the gap between the decorative main body and the vertical wall facade, further improving the aesthetics of the connection between the suspended top layer and the wall;

[0014] Third, the upwardly protruding wall can serve as a supporting structure for supporting the suspended top layer alone or in conjunction with the horizontal wall, which is conducive to ensuring that the suspended top layer is effectively supported and improving the connection stability between the suspended top layer and the wall;

[0015] Fourthly, the decorative main body and the mounting part are detachably connected, which facilitates the independent processing of the two parts. On the one hand, this reduces the surface treatment area of ​​the component and effectively reduces the processing cost. On the other hand, when the mounting part is stamped, there is no need to provide special protection for the decorative main body, which effectively reduces the difficulty and loss of parts processing and achieves the purpose of reducing processing and installation costs.

[0016] The decorative main body is a component that supports the suspended top layer. In order to enhance the structural strength of the decorative main body, a further technical solution may be that the decorative main body also includes a vertical wall body, the horizontal wall body is located on the upper side of the decorative main body, and the vertical wall body is located on the inner side of the decorative main body. When the decorative main body is connected to the mounting portion, the bottom end of the vertical wall body rests on the vertical wall facade. The vertical wall body abuts against the vertical wall facade, which is not only beneficial for the decorative main body to support the suspended top layer, but also beneficial for reducing the exposed gap between the decorative main body and the vertical wall facade. In order to increase the connection strength between the vertical wall body and the vertical wall facade, a further technical solution may be that a second concave-convex protrusion is arranged on the inner side surface of the vertical wall body. The functional purpose of the second concave-convex protrusion is the same as that of the first concave-convex protrusion.

[0017] A further technical solution may be that the rear end of the horizontal wall of the decorative main body is directly connected to the top of the vertical wall, and the front end of the horizontal wall of the decorative main body is connected to the bottom end of the vertical wall through a hypotenuse, so that a triangular support structure is formed between the horizontal wall, the vertical wall and the hypotenuse of the decorative main body; this triangular structure is conducive to increasing the structural strength of the decorative main body, and also improves the connection stability with the suspended ceiling layer. The hypotenuse is the main exposed edge of the decorative main body, and by adjusting the shape of the hypotenuse, the suspended ceiling system can produce different styles of shapes, such as a horizontal platform portion is provided at the bottom end of the hypotenuse, or a vertical vertical platform portion is provided at the top end of the hypotenuse.

[0018] The decorative main body is provided with an upwardly protruding wall and can swing at a certain angle. In order to allow the decorative main body to support the suspended top layer and fit the vertical wall facade, a further technical solution may be that the angle between the upper side surface of the horizontal wall of the decorative main body and the inner side surface of the vertical wall is between 80° and 110°, and the commonly used angles are 80˚, 85˚, 93˚, 95˚, 98˚, 100˚, 105˚ and 110˚. After the decorative main body is installed on the installation part, it swings downward at a certain angle. On the one hand, the angle between the two sides is generally not less than 80˚, so that the upwardly protruding wall can support the suspended top layer from below and the lower end of the vertical wall can be pressed against the vertical wall facade; on the other hand, the angle between the two sides is generally set to be no more than 110˚, so that the upwardly protruding wall does not support the suspended top layer too high to cause the suspended top layer to be uneven. For the above considerations, the angle between the two sides is set to be between 80° and 110°. From the perspective of product manufacturing, this arrangement also greatly reduces the manufacturing accuracy of the decorative main body, which is beneficial to increasing the mold life and reducing the production cost.

[0019] Since the present invention has the above characteristics and advantages, it can be applied to a corner installation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the axial direction structure of the corner mounting structure;

[0021] Figure 2 is a schematic diagram of the cross-sectional structure of the mounting portion in the front view direction;

[0022] Figure 3 is a schematic diagram of the cross-sectional structure of the decorative main body in the front view direction;

[0023] Figure 4 is a schematic diagram of a cross-sectional structure of the corner mounting structure in a front view direction, showing a first implementation mode;

[0024] Figure 5 is a schematic diagram of a cross-sectional structure of the corner mounting structure in a front view direction, showing a second implementation mode;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the corner mounting structure in the front view direction, showing the third implementation method. DETAILED DESCRIPTION

[0026] The use of a corner installation structure when installing a ceiling can well solve the problem of the connection and transition between the suspended ceiling layer 1 and the vertical wall facade 2. In order to further improve the connection effect between the corner installation structure and the suspended ceiling layer 1 and the vertical wall facade 2, the corner installation structure using the technical solution of the present invention is further described below in conjunction with the accompanying drawings. Except for the embodiments that are clearly stated to be equivalent or optional, the various implementation details disclosed below can be selectively applied or combined in one embodiment even if there is no direct correlation or synergy in terms of function.

[0027] like Figure 1 and Figure 4As shown, the corner mounting structure is arranged at the corner between the suspended top layer 1 and the vertical wall facade 2. The corner mounting structure includes a mounting portion 3 in the shape of a profile and a decorative main body portion 4 in the shape of a profile. The mounting portion 3 is used to be mounted on the vertical wall facade 2. The decorative main body portion 4 can be detachably connected to the mounting portion 3. The decorative main body portion 4 is used to support the suspended top layer 1 from below. In this way, the corner mounting structure not only becomes a corner connecting member connecting the suspended top layer 1 and the vertical wall facade 2, but also plays a role in supporting the suspended top layer 1 at the edge. At the same time, the detachable connection structure not only makes it more convenient to machine the mounting portion 3, but also helps to protect the appearance surface of the decorative main body portion 4 and reduce the surface treatment cost. Since the mounting portion 3 is mainly used for connection and not for appearance, it can be arranged at intervals during installation and use. Compared with traditional corner connectors, it can greatly reduce the use of materials and thus reduce the cost of use.

[0028] Among them Figure 1 and Figure 2 As shown, the mounting portion 3 includes a vertically arranged mounting wall 31, and the mounting wall 31 is provided with a mounting hole, through which a screw can pass to fix the mounting portion 3 to the vertical wall facade 2; the inner side surface of the mounting portion 3 is also provided with a first concave-convex protrusion 34, wherein the inner side surface of the mounting portion 3 refers to the surface facing the vertical wall facade 2; the provision of the first concave-convex protrusion 34 can increase the friction between the mounting portion 3 and the wall surface. The mounting portion 3 can also be connected to the vertical wall facade 2 by an adhesive, and the first concave-convex protrusion 34 can increase the bonding ability to improve the bonding reliability and stability between the inner side surface of the mounting portion 3 and the vertical wall facade 2. In addition to being connected to the vertical wall facade 2, the mounting portion 3 is also connected to the decorative main body 4 to provide support for the suspended top layer 1. In order to better connect with the layer board of the suspended top layer, the mounting part 3 also includes a horizontal bending wall 32 arranged at the top end of the mounting wall 31. When the decorative main body 4 is connected to the mounting part 3, a coupling groove 30 is formed between the horizontal bending wall 32 of the mounting part 3 and the horizontal wall body 41 of the decorative main body 4, into which the layer board of the suspended top layer 1 can be inserted. The horizontal bending wall 32 can also limit the upward movement of the suspended top layer 1.

[0029] like Figure 1 and Figure 3As shown, the decorative main body 4 includes a horizontal wall body 41 and a vertical wall body 42. The horizontal wall body 41 is located on the upper side of the decorative main body 4, and the vertical wall body 42 is located on the inner side of the decorative main body 4. When the decorative main body 4 is connected to the mounting portion 3, the inner side surface of the vertical wall body 42 abuts against the vertical wall facade 2, and the horizontal wall body 41 is combined with the horizontal bending wall 32 to form the coupling groove. The vertical wall body 42 abuts against the vertical wall facade 2, which is not only beneficial for the decorative main body 4 to support the suspended top layer 1, but also beneficial for reducing the exposed gap between the decorative main body 4 and the vertical wall facade 2. In order to increase the connection stability between the vertical wall body 42 and the vertical wall facade 2, a second concave-convex protrusion 47 having the same function as the first concave-convex protrusion 34 is also arranged on the inner side surface of the vertical wall body 42.

[0030] In order to enhance the structural strength of the decorative main body 4, the rear end of the horizontal wall 41 of the decorative main body 4 is directly connected to the top end of the vertical wall 42, and the front end of the horizontal wall 41 of the decorative main body 4 is connected to the bottom end of the vertical wall 42 via a hypotenuse 43. A triangular supporting structure is formed among the horizontal wall 41, the vertical wall 42 and the hypotenuse 43 of the decorative main body 4. This triangular structure is beneficial to increasing the structural strength of the decorative main body 4, and also provides stable support for the suspended layer 1.

[0031] The horizontal wall 41 is used to support the suspended top layer 1. Since the upper surface of the horizontal wall 41 is connected to the lower surface of the suspended top layer 1 by surface contact, a gap is likely to appear between the contact surfaces, which greatly affects the appearance of the corner. Figure 1~Figure 3 As shown, an upwardly protruding wall 5 is provided at the front end of the horizontal wall body 41. The upwardly protruding wall 5 is provided at the front end of the upper part of the decorative main body 4, and its outer surface can be used as an appearance surface. It can be connected only to the horizontal wall body 41, or it can be arranged at the intersection of the horizontal wall body 41 and the bevel 43. The upwardly protruding wall 5 is higher than the upper surface of the horizontal wall body, and the protruding height of the upwardly protruding wall 5 is generally set to be between 1mm and 8mm. The purpose of setting the upwardly protruding wall 5 is to allow the upwardly protruding wall 5 to first contact the suspended top layer 1 to form a line contact with a tighter connection effect, which is conducive to reducing the gap between the decorative main body 4 and the suspended top layer 1.

[0032] Further, such as Figure 1~Figure 3As shown, the decorative main body 4 is connected to the mounting part 3 by the hook 33 and the hook groove 44. The decorative main body 4 is provided with the hook groove 44, which is arranged at the intersection of the horizontal wall 41 and the vertical wall 42. The mounting part 3 is provided with the hook 33, which is arranged at the lower end of the mounting wall 31. The hook groove 44 and the hook 33 can be hooked with each other. When the decorative main body 4 is installed on the mounting part 3, the decorative main body 4 and the mounting part 3 are connected by the hook 33 and the hook groove 44 to achieve relative swinging hook connection. In another equivalent embodiment, the positions of the hook 33 and the hook groove 44 can be interchanged, which can also realize the movable connection of the decorative main body 4 to the mounting part 3. On the one hand, such a connection structure is conducive to reducing the difficulty of connection and installation between the two, and on the other hand, it allows the decorative main body 4 to have a certain degree of adaptability. This swinging connection method can not only support the top suspended top layer 1 through the upward protruding wall 5, but also can swing the decorative main body 4 slightly downward to get close to the vertical wall facade 2, while reducing the gap between the decorative main body 4 and the suspended top layer 1 and the gap between the decorative main body 4 and the vertical wall facade 2, further improving the aesthetics of the connection between the suspended top layer 1 and the wall.

[0033] Furthermore, since the bevel 43 is the main exposed edge of the decorative main body 4, the ceiling system can have different styles and structural strengths by adjusting the shape of the bevel 43. For example, a horizontal platform portion 45 is provided at the bottom end of the bevel 43, or a vertical upright platform portion 46 is provided at the top end of the bevel 43.

[0034] The connection method of the corner mounting structure is further described below with reference to three commonly used embodiments.

[0035] The first implementation method, such as Figure 4As shown, the mounting portion 3 is fixedly connected to the vertical wall facade 2 by screws, and the hook 33 is arranged at the lower end of the mounting wall 31. The T-shaped hook 33 includes a horizontal hook arm 331 and a vertical hook arm 332, and the vertical hook arm 332 is arranged parallel to the mounting wall 31. The decorative main body 4 is connected to the mounting portion 3 through the hook groove 44, and the hook groove 44 is arranged at the upper end of the vertical wall 42, matching with the hook 33. The hook groove 44 is a T-shaped groove, and the hook groove 44 includes a horizontal hook groove 441 and a vertical hook groove 442, and the vertical hook groove 442 is arranged parallel to the mounting wall 31. The size of the vertical hook groove 442 is slightly larger than the vertical hook arm 332. When the decorative main body 4 is connected to the mounting portion 3, the decorative main body 4 can swing relative to the mounting portion 3, and its swing angle is generally limited by the installation gap between the hook groove 44 and the hook 33. The advantage of such a configuration is that when the angle between the ceiling layer 1 and the vertical wall facade 2 is approximately a right angle, the decorative main body 4 can be relatively swung downward to fit the vertical wall facade 2, thereby reducing the gap between the decorative main body 4 and the vertical wall facade 2; Figure 4 As shown, since the upward protruding wall 5 is arranged on the front end portion of the horizontal wall body 41, although the decorative main body 4 swings downward by a certain angle, the suspended top layer 1 can still be supported by the upper protruding wall 5 alone from the bottom of the suspended top layer 1.

[0036] The second implementation method, such as Figure 5 As shown, on the basis of the first embodiment, the vertical hook arm 332 on the hook 33 is inclined, that is, the upper part is inclined outward and the lower part is swung inward, and the vertical hook arm 332 forms a certain angle with the installation wall 31, and this angle is generally set between 2˚ and 10˚; and the vertical hook groove 442 on the decorative main body 4 is arranged vertically. When the decorative main body 4 is connected to the installation part 3, the decorative main body 4 can not only swing relative to the installation part 3, but also has an initial inward swing angle. The advantage of this arrangement is that when the suspended top layer 1 is aligned with the vertical When the angle between the vertical wall facades 2 is greater than a right angle, the lower end of the vertical wall body 42 of the decorative main body 4 can first be abutted against the vertical wall facade 2 and then swing outward relative to the mounting portion 3. When the swing angle of the decorative main body 4 is large and the protruding height of the upward protruding wall 5 is small, the upward protruding wall 5 and the horizontal wall body 41 jointly support the suspended top layer 1 from below the suspended top layer 1; this further reduces the connection gap between the decorative main body 4 and the vertical wall facade 2, and also ensures that the suspended top layer 1 can be supported.

[0037] The third implementation method, such as Figure 6As shown, as an equivalent connection method between the decorative main body 4 and the mounting part 3, the hook groove 44 is arranged at the lower end of the mounting wall 31 and is arranged perpendicular to the mounting wall 31, and the hook 33 is arranged at the inner end of the horizontal wall body 41 and is arranged parallel to the horizontal wall body 41. When the decorative main body 4 is connected to the mounting part 3, the decorative main body 4 can swing relative to the mounting part 3. In order to further ensure the connection effect, the angle between the upper side surface of the horizontal wall body 41 of the decorative main body 4 and the inner side surface of the vertical wall body 42 is between 80° and 110°. Figure 6 The state shown is that the angle between the two side surfaces is 100°. The protruding height of the upwardly protruding wall 5 arranged at the front end of the horizontal wall body 41 is 2 mm. When the decorative main body 4 is connected to the mounting portion 3, the lower end of the vertical wall body 42 is against the vertical wall facade 2, and the upwardly protruding wall 5 supports the suspended top layer 1 from below. Such a connection enables the decorative main body 4 to be well combined with the suspended top layer 1 and the vertical wall facade 2, greatly reducing the connection gap between the two joints. Furthermore, the root thickness of the upwardly protruding wall 5 is less than the thickness of the rest of the part, so that it is easy to break off. In this way, when it is found that the edge of the suspended top layer 1 is lifted too high, the upwardly protruding wall 5 can be broken off to ensure the overall flatness of the suspended top layer 1.

[0038] Of course, the above three embodiments are only commonly used embodiments, and each solution is not necessarily implemented independently, and some details in each solution can also be used in combination. For example, the vertical hook arm 332 of the mounting portion 3 is inclined, which can be combined with the situation that the angle between the upper side of the horizontal wall 41 of the decorative main body 4 and the inner side of the vertical wall 42 is 80°. This new embodiment evolved through combination is also within the protection scope of the present invention.

Claims

1. A corner mounting structure, comprising a mounting portion in the shape of a profile and a decorative main body in the shape of a profile, wherein a first concave-convex protrusion is arranged on the inner side surface of the mounting portion, wherein the mounting portion is used to be mounted on a vertical wall, wherein the decorative main body can be detachably connected to the mounting portion, and wherein the decorative main body is used to support the top layer from below; characterized in that: The decorative main body comprises a horizontal wall body, an upwardly protruding wall is arranged at the front end of the horizontal wall body, when the decorative main body body is connected to the mounting part, the decorative main body body can swing relative to the mounting part, and the decorative main body body supports the suspended top layer from below the suspended top layer through the upwardly protruding wall or the upwardly protruding wall and the horizontal wall body; It also includes a hook and a hook groove that can be hooked with each other, the hook and the hook groove are respectively arranged on the decorative main body and the mounting part, when the decorative main body is mounted on the mounting part, the decorative main body and the mounting part are connected by the hook and the hook groove to achieve a relative swinging hook connection; The thickness of the root of the upwardly protruding wall is smaller than that of the remaining parts so as to facilitate breaking.

2. The corner mounting structure according to claim 1, characterized in that: The decorative main body also includes a vertical wall body, the horizontal wall body is located on the upper side of the decorative main body, and the vertical wall body is located on the inner side of the decorative main body. When the decorative main body is connected to the mounting part, the bottom end of the vertical wall body rests on the vertical wall surface.

3. The corner mounting structure according to claim 2, characterized in that: The angle between the upper side surface of the horizontal wall of the decorative main body and the inner side surface of the vertical wall is between 80° and 110°.

4. The corner installation structure according to claim 2, characterized in that: The rear end of the horizontal wall of the decorative main body is directly connected to the top of the vertical wall, while the front end of the horizontal wall of the decorative main body is connected to the bottom end of the vertical wall through a hypotenuse, forming a triangular support structure among the horizontal wall, the vertical wall and the hypotenuse of the decorative main body.

5. The corner mounting structure according to claim 4, characterized in that: A horizontal platform portion is provided at the bottom end of the oblique edge.

6. The corner installation structure according to claim 4, characterized in that: The top end of the oblique edge is provided with a vertical upright platform portion.

7. The corner mounting structure according to claim 2, characterized in that: Second concave and convex protrusions are arranged on the inner side surface of the vertical wall.

8. The corner installation structure according to claim 1, characterized in that: A horizontal bending wall is also provided at the top end of the mounting portion. When the decorative main body is connected to the mounting portion, a coupling groove into which the ceiling panel can be inserted is formed between the horizontal bending wall of the mounting portion and the horizontal wall of the decorative main body.

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