Corner connection structure and connection method for prefabricated kitchen wall

Abstract

The present invention provides an external corner connection structure and connection method for an assembled kitchen wall surface, which relates to the technical field of decoration design. It includes a first external corner board, a second external corner board, and an external corner connector. Reinforcing members are provided at the ends of the first external corner board and the second external corner board. The reinforcing member includes a reinforcing middle board, a short side board, and a long side board. The external corner connector includes a first external corner member and a second external corner member. The first external corner member includes a first connecting board and a second connecting board, and a buckle is provided on the first connecting board. The second external corner member includes a third connecting board and a connecting block. One end of the connecting block away from the third connecting board is connected to the long side board at the end of the first external corner board through a first connecting adhesive. The structure of the present invention is simple and convenient to install. The wall panels at the external corners are assembled and installed, and the position adjustment and installation of the external corner boards in two directions can be carried out. The installation stability is high, the overall strength of the external corner boards is not damaged, the external corner structure is more firm, and the service life is long.

Description

Technical Field

[0001] The present invention relates to the technical field of decoration design.

[0002] In particular, the present invention relates to a positive angle connection structure and a connection method for an assembled kitchen wall. Background Art

[0003] The current decoration industry is developing towards industrial modular installation. Generally speaking, wall decoration is a commonly used decoration method in interior design, which can increase the sense of hierarchy of the interior space and play a role in beautifying the decoration.

[0004] At present, traditional kitchen decoration generally uses cement mortar to fix wall tiles and floor tiles. The on-site operation has a large dust pollution, requires high craftsmanship skills of the workers, and has a long decoration period. Local adjustment and replacement cannot be performed during installation, which requires high technical skills of the installation workers, is time-consuming and labor-intensive, and has high labor intensity. Therefore, the installation of kitchen wall panels now prefers prefabricated installation to achieve the purpose of speeding up construction efficiency and saving construction consumption.

[0005] Especially for the outer corner wall of the kitchen, it is even more necessary to develop a new assembled outer corner connection structure. For example, the Chinese patent utility model CN215760141U relates to a flexible and adjustable assembled kitchen wall panel outer corner structure. The above utility model achieves the purpose of reinforcing the inner side of the outer corner structure of the wall panel at any angle within a certain range by arranging a bending opening, a hinged plate, an internal threaded cylinder unit, a threaded column unit, a movable cylinder unit and a fastening cylinder unit on the wall panel. The above utility model has the following advantages: First, the inner side reinforcement structure of the wall panel after bending is highly stable, the support distance is flexible and adjustable, the adjustment operation is convenient and fast, and it can fit the corners of various angles; second, the bending angle of the wall panel can be adjusted arbitrarily within a certain range by first plugging in the rough adjustment and then screwing in the fine adjustment, and the structural stability can be maintained for a long time after adjustment; third, the inner side support reinforcement device of the bent wall panel itself has a simple and efficient structure, and the installation and disassembly operation is flexible and convenient.

[0006] However, the above ceiling structure still has the following problems: the structure is complex, multiple grooves and hinges are set on the wall panel, which will affect the overall strength of the wall panel, it cannot effectively support large wall tiles with large mass, and the external corners have poor firmness, resulting in a short service life.

[0007] Therefore, in order to solve the above problems, it is very necessary for us to design a reasonable and efficient external corner connection structure and connection method for the prefabricated kitchen wall. Summary of the invention

[0008] The purpose of the present invention is to provide an assembled corner connection structure for a kitchen wall surface, which has a simple structure, is convenient to install, can assemble and install the wall panels at the external corner, can adjust the positions and install the external corner panels in two directions, has high installation stability, does not damage the overall strength of the external corner panels, has a more firm external corner structure and a long service life.

[0009] To achieve the above object, the present invention is realized by adopting the following technical solutions:

[0010] An assembled corner connection structure for a kitchen wall surface, comprising a first external corner panel arranged on a wall body, a second external corner panel arranged on the wall body and perpendicular to the first external corner panel, and an external corner connecting member for connecting the first external corner panel and the second external corner panel. Reinforcing members are arranged at the ends of the first external corner panel and the second external corner panel. The reinforcing member includes a reinforcing middle plate, a short side plate arranged at one end of the reinforcing middle plate close to the wall body, and a long side plate arranged at one end of the reinforcing middle plate far from the wall body. The external corner connecting member includes a first external corner member for connecting with the first external corner panel and a second external corner member for connecting with the second external corner panel. The first external corner member includes a first connecting plate for connecting with the first external corner panel and a second connecting plate perpendicular to the first connecting plate. A buckle for connecting with the short side plate at the end of the first external corner panel is arranged on one side of the first connecting plate away from the second connecting plate. The second external corner member includes a third connecting plate for connecting with the second connecting plate and a connecting block arranged at the end of the third connecting plate for connecting with the long side plate at the end of the second external corner panel. One end of the connecting block away from the third connecting plate is connected to the long side plate at the end of the first external corner panel through a first connecting glue.

[0011] As a preference of the present invention, both the first external corner panel and the second external corner panel are connected to the wall body through leveling members. The leveling member includes a keel arranged on the wall body, a movable member arranged on the keel, and a connecting bolt for connecting the keel and the movable member. The keel is arranged vertically, and the keel includes a bottom plate arranged on the wall body and a protruding plate arranged on the bottom plate. The movable member includes an intermediate plate, a first side plate extending towards the wall body at one end of the intermediate plate, and a second side plate extending towards the wall body at one end of the intermediate plate away from the first side plate. At least a part of the protruding plate is located between the first side plate and the second side plate. A first waist-shaped hole is arranged on the protruding plate, and second waist-shaped holes are arranged on both the first side plate and the second side plate. The connecting bolt is a tension bolt, and at least a part of the connecting bolt is located in the first waist-shaped hole and the second waist-shaped hole.

[0012] Preferably, in the present invention, the first connecting plate is arranged on the side of the first external corner plate close to the wall, and the third connecting plate is arranged on the side of the second external corner plate close to the wall.

[0013] Preferably, in the present invention, a first screw for connecting with the first external corner plate is arranged on the first connecting plate.

[0014] Preferably, in the present invention, the second connecting plate is connected to the side of the third connecting plate close to the wall, and a second screw for connecting with the third connecting plate is arranged on the second connecting plate.

[0015] Preferably, in the present invention, the side of the connecting block close to the wall is arranged on the same plane as the side of the third connecting plate close to the wall. The side of the connecting block away from the third connecting plate is connected to the side of the long side plate of the end of the first external corner plate close to the short side plate through a first bonding agent; the side of the connecting block away from the wall is connected to the side of the long side plate of the end of the second external corner plate close to the short side plate through a second bonding agent.

[0016] Preferably, in the present invention, caulking grooves for facilitating the setting of the first bonding agent and the second bonding agent are arranged on the side of the connecting block.

[0017] Preferably, in the present invention, a positioning block for extending between the long side plate and the short side plate at the end of the second external corner plate is arranged on the connecting block, and an external corner caulking block is arranged on the connecting block.

[0018] Preferably, in the present invention, both the first external corner member and the second external corner member are integrally formed parts.

[0019] The present invention also provides a connection method for the external corner connection structure of an assembled kitchen wall surface, including the following steps:

[0020] S1: Install the leveling member on the wall and complete leveling;

[0021] S2: Install the first external corner member on the first external corner plate, so that the short side plate at the end of the first external corner plate extends into the buckle, and install the first connecting plate on the inner side of the first external corner plate through the first screw;

[0022] S3: Install the second external corner member on the second external corner plate, so that the side wall of the connecting block is connected to the long side plate at the end of the second external corner plate through the second bonding agent;

[0023] S4: Vertically join the first external corner plate and the second external corner plate, so that the side wall of the connecting block is connected to the long side plate at the end of the first external corner plate through the first bonding agent, and connect the second connecting plate and the third connecting plate through the second screw;

[0024] S5: Finally, install the connected first external corner board and second external corner board on the leveling component of the wall.

[0025] The beneficial effects of the external corner connection structure and connection method for an assembled kitchen wall surface of the present invention are as follows: The structure is simple and the installation is convenient. The wall panels at the external corners are assembled and installed, and the position adjustment and installation of the external corner boards in two directions can be carried out. The installation stability is high, the overall strength of the external corner boards is not damaged, the external corner structure is more firm, and the service life is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a top view schematic diagram of the overall structure of an embodiment of the external corner connection structure for an assembled kitchen wall surface of the present invention;

[0027] Figure 2 It is a schematic diagram of the installation structure of the reinforcing member in an embodiment of the external corner connection structure for an assembled kitchen wall surface of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the first external corner member in an embodiment of the external corner connection structure for an assembled kitchen wall surface of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the second external corner member in an embodiment of the external corner connection structure for an assembled kitchen wall surface of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the leveling component in an embodiment of the external corner connection structure for an assembled kitchen wall surface of the present invention;

[0031] Figure 6 It is a flow chart schematic diagram of the connection method of the external corner connection structure for an assembled kitchen wall surface of the present invention;

[0032] In the figure: 1, keel, 11, bottom plate, 12, extending plate, 2, movable part, 21, first side plate, 22, second side plate, 23, middle plate, 4, first external corner member, 41, first connecting plate, 411, first screw, 42, second connecting plate, 421, second screw, 43, buckle, 5, second external corner member, 51, third connecting plate, 52, connecting block, 521, positioning block, 522, external corner caulking block, 53, first connecting glue, 54, second connecting glue, 55, caulking groove, 100, first external corner board, 200, second external corner board, 300, reinforcing member, 301, reinforcing middle plate, 302, short side plate, 303, long side plate, 400, wall, 500, connecting bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following are specific embodiments of the present invention, which further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0034] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements and steps of the modules and steps set forth in these embodiments do not limit the scope of the present invention.

[0035] Meanwhile, it should be understood that, for the sake of convenience of description, the processes in the accompanying drawings do not merely proceed separately, but multiple steps cross each other.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the products of the present invention are customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0037] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation on the present invention or its application or use.

[0038] Technologies, methods, and systems known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and systems should be regarded as part of the authorization specification.

[0039] Embodiment 1: As Figures 1 to 5As shown, it is only one embodiment of the present invention, a corner connection structure for an assembled kitchen wall surface, including a first corner plate 100 arranged on a wall body 400, a second corner plate 200 arranged on the wall body 400 and perpendicular to the first corner plate 100, and a corner connector for connecting the first corner plate 100 and the second corner plate 200. Reinforcing members 300 are arranged at the ends of both the first corner plate 100 and the second corner plate 200. The reinforcing member 300 includes a reinforcing middle plate 301, a short side plate 302 arranged at one end of the reinforcing middle plate 301 close to the wall body 400, and a long side plate 303 arranged at one end of the reinforcing middle plate 301 far from the wall body 400. The corner connector includes a first corner member 4 for connecting with the first corner plate 100 and a second corner member 5 for connecting with the second corner plate 200. The first corner member 4 includes a first connecting plate 41 for connecting with the first corner plate 100 and a second connecting plate 42 perpendicular to the first connecting plate 41. A buckle 43 for connecting with the short side plate 302 at the end of the first corner plate 100 is arranged on one side of the first connecting plate 41 far from the second connecting plate 42. The second corner member 5 includes a third connecting plate 51 for connecting with the second connecting plate 42 and a connecting block 52 arranged at the end of the third connecting plate 51 for connecting with the long side plate 303 at the end of the second corner plate 200. One end of the connecting block 52 far from the third connecting plate 51 is connected to the long side plate 303 at the end of the first corner plate 100 through a first connecting glue 53.

[0040] In the present invention, the wall body 400 at the corner is L-shaped, which is equivalent to having two wall bodies 400 (by default, the two wall bodies are perpendicular to each other). Leveling members are arranged on each wall body 400 for leveling. Then, after the first corner plate 100 and the second corner plate 200 are connected through the corner connector to form an L-shaped wall panel, the L-shaped wall panel is installed on the L-shaped wall body 400 where the leveling members have been set.

[0041] First, it is the structure of the corner plates (including the first corner plate 100 and the second corner plate 200, collectively referred to as corner plates). Reinforcing members 300 are arranged at the ends of the corner plates. The reinforcing member 300 includes a reinforcing middle plate 301, a short side plate 302 arranged at one end of the reinforcing middle plate 301 close to the wall body 400, and a long side plate 303 arranged at one end of the reinforcing middle plate 301 far from the wall body 400. The reinforcing middle plate 301 is closely attached to the end face of the corner plate. The short side plate 302 and the long side plate 303 are both perpendicular to the reinforcing middle plate 301. One side of the short side plate 302 far from the long side plate 303 is flush with one side of the corner plate close to the wall body 400, and one side of the long side plate 303 far from the short side plate 302 is flush with one side of the corner plate far from the wall body 400.

[0042] Next is the structure of the external corner connecting piece. The external corner connecting piece includes a first external corner piece 4 for connecting with the first external corner plate 100 and a second external corner piece 5 for connecting with the second external corner plate 200. The first external corner piece 4 includes a first connecting plate 41 for connecting with the first external corner plate 100 and a second connecting plate 42 arranged perpendicular to the first connecting plate 41. On the side of the first connecting plate 41 away from the second connecting plate 42, there is a buckle 43 for connecting with the short side plate 302 at the end of the first external corner plate 100. The second external corner piece 5 includes a third connecting plate 51 for connecting with the second connecting plate 42 and a connecting block 52 arranged at the end of the third connecting plate 51 for connecting with the long side plate 303 at the end of the second external corner plate 200 through a second connecting glue 54. One end of the connecting block 52 away from the third connecting plate 51 is connected with the long side plate 303 at the end of the first external corner plate 100 through a first connecting glue 53.

[0043] Here, the first connecting plate 41 is arranged on the side of the first external corner plate 100 close to the wall body 400, the third connecting plate 51 is arranged on the side of the second external corner plate 200 close to the wall body 400. On the first connecting plate 41, there is a first screw 411 for connecting with the first external corner plate 100. The second connecting plate 42 is connected with the side of the third connecting plate 51 close to the wall body 400, and on the second connecting plate 42, there is a second screw 421 for connecting with the third connecting plate 51.

[0044] Then the steps for installing the external corner are as follows: First, install the leveling piece on the wall body 400 and complete the leveling; then install the first external corner piece 4 on the first external corner plate 100, so that the short side plate 302 at the end of the first external corner plate 100 extends into the buckle 43, and install the first connecting plate 41 on the inner side of the first external corner plate 100 through the first screw 411; then install the second external corner piece 5 on the second external corner plate 200, so that the side wall of the connecting block 52 is connected with the long side plate 303 at the end of the second external corner plate 200 through the second connecting glue 54; then vertically join the first external corner plate 100 and the second external corner plate 200, so that the side wall of the connecting block 52 is connected with the long side plate 303 at the end of the first external corner plate 100 through the first connecting glue 53, and connect the second connecting plate 42 and the third connecting plate 51 through the second screw 421; finally, install the connected first external corner plate 100 and second external corner plate 200 on the leveling piece of the wall body 400.

[0045] In the external corner connection structure of an assembled kitchen wall surface of the present invention, the structure is simple and the installation is convenient. The wall panels at the external corner are assembled and installed, and the position adjustment and installation of the external corner plates in two directions can be carried out. The installation stability is high, the overall strength of the external corner plates is not damaged, the external corner structure is more firm, and the service life is long.

[0046] Example 2. Still as Figures 1 to 5 shown, which is only one of the embodiments of the present invention. On the basis of Example 1, in the external corner connection structure of an assembled kitchen wall of the present invention, both the first external corner plate 100 and the second external corner plate 200 are connected to the wall body 400 through leveling members. The leveling members include a keel 1 provided on the wall body 400, a movable member 2 provided on the keel 1, and a connecting bolt 500 for connecting the keel 1 and the movable member 2. The keel 1 is vertically arranged, and the keel 1 includes a bottom plate 11 provided on the wall body 400 and an extending plate 12 provided on the bottom plate 11. The movable member 2 includes an intermediate plate 23, a first side plate 21 extending towards the wall body 400 at the end of the intermediate plate 23, and a second side plate 22 extending towards the wall body 400 at the end of the intermediate plate 23 away from the first side plate 21. At least a part of the extending plate 12 is located between the first side plate 21 and the second side plate 22. A first waist-shaped hole is provided on the extending plate 12, and second waist-shaped holes are provided on both the first side plate 21 and the second side plate 22. The connecting bolt 500 is a tension bolt, and at least a part of the connecting bolt 500 is located in the first waist-shaped hole and the second waist-shaped hole.

[0047] That is, the movable member 2 is installed outside the extending plate 12 of the keel 1, so that the intermediate plate 23 is located at the end of the extending plate 12 away from the bottom plate 11, and the first side plate 21 and the second side plate 22 are respectively located on both sides of the extending plate 12. Then, the tension bolt passes through the second waist-shaped hole on the first side plate 21, the first waist-shaped hole on the extending plate 12, and the second waist-shaped hole on the second side plate 22 in sequence and is tightened at both ends, so that the first side plate 21 and the second side plate 22 clamp the extending plate 12. Under the action of friction, the connection between the movable member 2 and the keel 1 is completed.

[0048] It should be noted that both the first waist-shaped hole and the second waist-shaped hole are perforations arranged in a long strip shape, and the first waist-shaped hole and the second waist-shaped hole are vertically arranged. That is, the connecting bolt 500 slides in the first waist-shaped hole or the second waist-shaped hole, so as to adjust the installation position of the movable member 2 on the keel 1. Generally speaking, the first waist-shaped hole is horizontally arranged, which can realize the front-back adjustment of the movable member 2 (i.e., the distance from the wall body 400), and the second waist-shaped hole is vertically arranged, which can realize the up-down adjustment of the movable member 2 (i.e., the distance from the ground). After completing the up-down and front-back adjustment of the movable member 2, the sides of the intermediate plates 23 of all the movable members 2 away from the wall body 400 are aligned, so that the kitchen wall tiles installed on the movable member 2 can be leveled. Multiple keels 1 can be installed on the wall body 400, and multiple movable members 2 can be installed on each keel 1. It has strong versatility, convenient installation, and high construction efficiency.

[0049] Embodiment 3, still as Figures 1 to 5 shown, which is only one of the embodiments of the present invention. On the basis of any of the above embodiments, in the external corner connection structure of a prefabricated kitchen wall of the present invention, the side of the connection block 52 close to the wall body 400 is arranged on the same plane as the side of the third connection plate 51 close to the wall body 400. The side of the connection block 52 far from the third connection plate 51 is connected to the side of the long side plate 303 of the end of the first external corner plate 100 close to the short side plate 302 through the first connection adhesive 53; the side of the connection block 52 far from the wall body 400 is connected to the side of the long side plate 303 of the end of the second external corner plate 200 close to the short side plate 302 through the second connection adhesive 54.

[0050] Here, a caulking groove 55 for facilitating the setting of the first connection adhesive 53 and the second connection adhesive 54 is arranged on the side of the connection block 52.

[0051] In addition, a positioning block 521 extending between the long side plate 303 and the short side plate 302 at the end of the second external corner plate 200 is arranged on the connection block 52, and an external corner caulking block 522 is arranged on the connection block 52.

[0052] Finally, both the first external corner member 4 and the second external corner member 5 are integrally formed parts.

[0053] Embodiment 4, as Figure 6 shown, which is only one of the embodiments of the present invention. The present invention also provides a connection method for the external corner connection structure of a prefabricated kitchen wall in any of the above embodiments, including the following steps:

[0054] S1: Install the leveling member on the wall body and complete leveling;

[0055] S2: Install the first external corner member on the first external corner plate, so that the short side plate at the end of the first external corner plate extends into the buckle, and install the first connection plate on the inner side of the first external corner plate through the first screw;

[0056] S3: Install the second external corner member on the second external corner plate, so that the side wall of the connection block is connected to the long side plate at the end of the second external corner plate through the second connection adhesive;

[0057] S4: Vertically splice the first external corner plate and the second external corner plate, so that the side wall of the connection block is connected to the long side plate at the end of the first external corner plate through the first connection adhesive, and connect the second connection plate and the third connection plate through the second screw;

[0058] S5: Finally, install the connected first external corner plate and second external corner plate on the leveling member of the wall body.

[0059] The structure of the external corner connection structure and connection method of an assembled kitchen wall in the present invention is simple and the installation is convenient. The wall panels at the external corner are assembled and installed, and the position adjustment and installation of the external corner panels in two directions can be carried out. The installation stability is high, the overall strength of the external corner panels is not damaged, the external corner structure is more firm, and the service life is long.

[0060] The present invention is not limited to the above specific embodiments, and various changes and modifications can be made to the present invention. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall be included in the protection scope of the present invention.

Claims

1. An external corner connection structure for an assembled kitchen wall surface, characterized in that: It includes a first external corner board (100) arranged on a wall body (400), a second external corner board (200) arranged on the wall body (400) and perpendicular to the first external corner board (100), and an external corner connecting piece for connecting the first external corner board (100) and the second external corner board (200). Reinforcing members (300) are arranged at the ends of the first external corner board (100) and the second external corner board (200). The reinforcing member (300) includes a reinforcing middle plate (301), a short side plate (302) arranged at one end of the reinforcing middle plate (301) close to the wall body (400), and a long side plate (303) arranged at one end of the reinforcing middle plate (301) far from the wall body (400). The external corner connecting piece includes a first external corner piece (4) for connecting with the first external corner board (100) and a second external corner piece (5) for connecting with the second external corner board (200). The first external corner piece (4) includes a first connecting plate (41) for connecting with the first external corner board (100) and a second connecting plate (42) arranged perpendicular to the first connecting plate (41). A buckle (43) for connecting with the short side plate (302) at the end of the first external corner board (100) is arranged on one side of the first connecting plate (41) far from the second connecting plate (42). The second external corner piece (5) includes a third connecting plate (51) for connecting with the second connecting plate (42) and a connecting block (52) arranged at the end of the third connecting plate (51) for connecting with the long side plate (303) at the end of the second external corner board (200). One end of the connecting block (52) far from the third connecting plate (51) is connected with the long side plate (303) at the end of the first external corner board (100) through a first connecting glue (53).

2. The external corner connection structure of a prefabricated kitchen wall surface according to claim 1, characterized in that: Both the first external corner board (100) and the second external corner board (200) are connected to the wall body (400) through leveling members. The leveling members include a keel (1) provided on the wall body (400), a movable member (2) provided on the keel (1), and a connecting bolt (500) for connecting the keel (1) and the movable member (2). The keel (1) is vertically arranged, and the keel (1) includes a bottom plate (11) provided on the wall body (400) and an extending plate (12) provided on the bottom plate (11). The movable member (2) includes an intermediate plate (23), a first side plate (21) provided at the end of the intermediate plate (23) and extending towards the wall body (400), and a second side plate (22) provided at one end of the intermediate plate (23) away from the first side plate (21) and extending towards the wall body (400). At least a part of the extending plate (12) is located between the first side plate (21) and the second side plate (22). A first waist-shaped hole is provided on the extending plate (12), and second waist-shaped holes are provided on both the first side plate (21) and the second side plate (22). The connecting bolt (500) is a tension bolt, and at least a part of the connecting bolt (500) is located in the first waist-shaped hole and the second waist-shaped hole.

3. The external corner connection structure of a prefabricated kitchen wall surface according to claim 2, characterized in that: The first connecting plate (41) is provided on the side of the first external corner board (100) close to the wall body (400), and the third connecting plate (51) is provided on the side of the second external corner board (200) close to the wall body (400).

4. The external corner connection structure of a prefabricated kitchen wall surface according to claim 3, characterized in that: A first screw (411) for connecting with the first external corner board (100) is provided on the first connecting plate (41).

5. The male corner connection structure of an assembled kitchen wall surface according to claim 4, characterized in that: The second connecting plate (42) is connected to the side of the third connecting plate (51) close to the wall body (400), and a second screw (421) for connecting with the third connecting plate (51) is provided on the second connecting plate (42).

6. The male corner connection structure of a prefabricated kitchen wall surface according to claim 5, characterized in that: The side of the connecting block (52) close to the wall body (400) is arranged on the same plane as the side of the third connecting plate (51) close to the wall body (400). The side of the connecting block (52) away from the third connecting plate (51) is connected to the side of the long side plate (303) of the end of the first external corner board (100) close to the short side plate (302) through a first connecting adhesive (53); the side of the connecting block (52) away from the wall body (400) is connected to the side of the long side plate (303) of the end of the second external corner board (200) close to the short side plate (302) through a second connecting adhesive (54).

7. The external corner connection structure of a prefabricated kitchen wall surface according to claim 6, characterized in that: A caulking groove (55) for facilitating the setting of the first connecting adhesive (53) and the second connecting adhesive (54) is provided on the side of the connecting block (52).

8. The male corner connection structure of a prefabricated kitchen wall surface according to claim 6, characterized in that: A positioning block (521) for extending between the long side plate (303) and the short side plate (302) at the end of the second external corner board (200) is provided on the connecting block (52), and an external corner caulking block (522) is provided on the connecting block (52).

9. The male corner connection structure of a prefabricated kitchen wall surface according to claim 6, characterized in that: The first external corner member (4) and the second external corner member (5) are both integrally formed members.

10. A connection method for the external corner connection structure of an assembled kitchen wall surface according to any one of claims 7 to 9, characterized in that, The method includes the following steps: S1: Install the leveling member on the wall and complete leveling; S2: Install the first external corner member on the first external corner plate, such that the short side plate at the end of the first external corner plate extends into the buckle, and install the first connecting plate on the inner side of the first external corner plate through the first screw; S3: Install the second external corner member on the second external corner plate, such that the side wall of the connecting block is connected to the long side plate at the end of the second external corner plate through the second connecting adhesive; S4: Vertically splice the first external corner plate and the second external corner plate, such that the side wall of the connecting block is connected to the long side plate at the end of the first external corner plate through the first connecting adhesive, and connect the second connecting plate and the third connecting plate through the second screw; S5: Finally, install the connected first external corner plate and second external corner plate on the leveling member of the wall.

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