Back plate or side plate, connecting structure of back plate or side plate and integral bathroom

Abstract

The utility model discloses a connecting structure between a back plate and a side plate, which comprises a first extension plate, a second extension plate and a hook part which are arranged at the edge of the side plate, and a first accommodating part and a second accommodating part which are arranged at the edge of the back plate, the first extension plate extends outwards from the panel edge of the side plate in the panel extension direction of the back plate, the second extension plate is arranged on the first extension plate and extends towards the first containing part, and the first containing part is used for containing the second extension plate. The second extension plate is inserted into the first containing part, the hook part is arranged on the second extension plate and extends towards the second containing part, the second containing part is used for containing the hook part, and the plane where the hook part is located is perpendicular to the plane where the second extension plate is located. The containing direction of the first containing part is perpendicular to the containing direction of the second containing part.

Description

Technical Field

[0001] The utility model relates to the technical field of home decoration building materials and integrated bathrooms, and in particular to a connection structure between a back panel and a side panel, and a back panel or a side panel and an integrated bathroom comprising the connection structure. Background Art

[0002] The back and side panels are both part of the wall panels of a bathroom unit. During assembly, they need to be connected to form a stable frame. Traditional bathroom units require fasteners to connect the back and side panels, which, while structurally stable, is cumbersome.

[0003] There are also designs for the edge structures of the back panel and the side panels, relying on their own structures to achieve the connection between the two. For example, the U.S. patent application with publication number US20220313027A1, named Shower Assembly with Integrated Water Collection and Dispersion, discloses an integrated bathroom. By designing the edge structures of the back panel and the side panels, a guide cavity is formed at the connection between the back panel and the side panels, which is used to guide the bottom of the liquid to flow into the waterproof tray, while achieving the connection between the back panel and the side panels. However, the connection structure between the back panel and the side panels disclosed in this patent, although it can achieve the connection between the back panel and the side panels, still has the disadvantages of poor fit and poor stability; relying solely on the structure in this patent, it is impossible to achieve a good stable connection between the back panel and the side panels.

[0004] The disclosure of the above background technology content is only used to assist in understanding the inventive concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed before the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of this application. Summary of the Invention

[0005] In view of this, in order to solve the above problems, the purpose of the present invention is to provide an improved connection structure between the back panel and the side panels, so that the connection between the back panel and the side panels is more stable.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A connection structure between a back panel and a side panel, comprising a first extension panel, a second extension panel and a hook portion, and a first accommodating portion and a second accommodating portion arranged at the edge of the side panel, wherein the first extension panel extends outward from the panel edge of the side panel along the panel extension direction of the back panel, the second extension panel is arranged on the first extension panel and extends toward the first accommodating portion, the first accommodating portion is used to accommodate the second extension panel, the second extension panel is inserted into the first accommodating portion, the hook portion is arranged on the second extension panel and extends toward the second accommodating portion, the second accommodating portion is used to accommodate the hook portion, the planes where the hook portion and the second extension panel are located are perpendicular to each other, and the accommodating directions of the first accommodating portion and the second accommodating portion are perpendicular.

[0008] According to some preferred implementation aspects of the present invention, the first accommodating portion has a first accommodating groove for accommodating the second extension plate; the second accommodating portion has a second accommodating groove for accommodating the hook portion, and the opening directions of the first accommodating groove and the second accommodating groove are perpendicular to each other.

[0009] According to some preferred embodiments of the present invention, the second receiving portion includes a blocking portion extending toward the second extension plate, and a groove is formed between the hook portion and the first extension plate, and the blocking portion is received in the groove. That is, when the back panel and side panels are assembled, the hook portion is inserted into the second receiving groove, and the blocking portion is correspondingly inserted into the groove.

[0010] According to some preferred implementation aspects of the present invention, an end portion of the first extension plate is flush with an end portion of the hook away from the second extension plate.

[0011] According to some preferred embodiments of the present invention, the thickness of the hook portion gradually decreases from the side close to the second extension plate to the side away from the second extension plate. Preferably, when viewed horizontally, the side of the hook portion close to the blocking portion is an inclined surface, and the inclined surface is inclined from top to bottom toward the blocking portion.

[0012] More preferably, when viewed horizontally, another inclined surface is provided on the first extension plate at a position corresponding to the hook portion, the inclined surface being inclined from top to bottom toward the blocking portion. When viewed horizontally, a groove is formed between the two inclined surfaces, such that the thickness of the groove gradually increases from top to bottom.

[0013] According to some preferred implementation aspects of the present invention, the thickness of the groove gradually increases from a side close to the second extension plate to a side away from the second extension plate.

[0014] Preferably, viewed from a vertical direction, a side of the hook portion close to the blocking portion is an inclined surface, and the inclined surface is inclined toward the blocking portion along a direction from the second extension plate to the blocking portion.

[0015] More preferably, viewed from the vertical direction, another inclined surface is provided on the first extension plate at a position corresponding to the hook portion, and the inclined surface is also inclined toward the blocking portion along the direction from the second extension plate to the blocking portion.

[0016] When viewed vertically, a groove is formed between the two inclined surfaces, with the thickness of the groove gradually decreasing from the side closest to the blocking portion to the side closest to the second extension plate. This allows the back panel and side panels to be securely connected by the gradually tightening groove, clamping the blocking portion.

[0017] According to some preferred implementation aspects of the present invention, a connecting plate is provided between the top of the hook portion and the first extension plate, and the thickness of the groove gradually increases from a side close to the connecting plate to a side away from the connecting plate.

[0018] According to some preferred embodiments of the present invention, the thickness of the blocking portion gradually increases from the side closest to the connecting plate to the side further away from the connecting plate. Viewed horizontally, the two side surfaces of the blocking portion, along the thickness direction, are inclined, sloping upward from bottom to top toward the connecting plate. These surfaces cooperate with the hook portion and the corresponding inclined surface on the first extension plate to facilitate insertion and installation.

[0019] In the vertical direction, the thickness of the groove gradually decreases from bottom to top, and the thickness of the matching blocking part gradually decreases from bottom to top, which not only facilitates the insertion and installation of the groove and the blocking part, but also enables the blocking part to be clamped by the gradually tightening groove after the back panel and the side panel are installed in place, so that the connection between the back panel and the side panel is firm.

[0020] According to some preferred embodiments of the present invention, a first guide surface is provided on the bottom end of the hook portion, near the blocking portion; a second guide surface is provided on the top end of the blocking portion, near the hook portion. Preferably, a third guide surface is provided on the bottom end of the inclined surface of the first extension plate, corresponding to the hook portion, when viewed horizontally. The guide surface is a curved surface or an inclined surface.

[0021] According to some preferred embodiments of the present invention, the first accommodating portion includes, in sequence, a third extension plate, a fourth extension plate, and a fifth extension plate. The third extension plate is formed by extending the front panel of the back panel away from the side panels. The third, fourth, and fifth extension plates form a first accommodating groove for accommodating the second extension plate. The fourth extension plate extends along the front panel of the back panel, and the fifth extension plate extends toward the first extension plate. The third and fifth extension plates are respectively located at opposite ends of the fourth extension plate.

[0022] According to some preferred implementation aspects of the present invention, the distance between the third extension plate and the fifth extension plate gradually increases from a side close to the fourth extension plate to a side away from the fourth extension plate.

[0023] Preferably, viewed from the vertical direction, the inner side surfaces of the third extension plate and the fifth extension plate close to the second extension plate are inclined surfaces, which are inclined toward the second extension plate from close to the fourth extension plate to away from the fourth extension plate, so that the first accommodating groove is gradually tightened along the insertion direction of the second extension plate, clamping the second extension plate, so that the connection between the back plate and the side plate is firm.

[0024] More preferably, the third extension plate and the fifth extension plate are arranged at an angle to achieve the above effect, that is, the third extension plate, the fourth extension plate and the fifth extension plate form a "π" or "π" structure to cooperate with the second extension plate.

[0025] The end portion of the second extension plate away from the first extension plate has a fourth guide surface for easy insertion into the first receiving groove.

[0026] According to some preferred embodiments of the present invention, the second receiving portion includes a sixth extension plate and a seventh extension plate, the blocking portion is disposed on the seventh extension plate and extends toward the second extension plate, and a second receiving slot for receiving the hook portion is formed between the blocking portion and the sixth extension plate. Openings corresponding to the hook portion and the blocking portion are provided on the sixth extension plate to facilitate installation, observation, preparation, and disassembly.

[0027] According to some preferred implementation aspects of the present invention, a plurality of hooks are provided on the upper portion of the second extension plate in the up-down direction, and a plurality of corresponding blocking portions are provided on the upper portion of the seventh extension plate in the up-down direction.

[0028] In some embodiments of the present invention, the first extension plate is disposed perpendicularly to the side panel and the second extension plate, respectively. The side panel and the second extension plate are disposed parallel to each other. The hook portion is disposed perpendicularly to the second extension plate and horizontally to the first extension plate. The fourth extension plate, the sixth extension plate, the blocking portion, and the back panel are disposed parallel to each other. The seventh extension plate is disposed perpendicularly to the sixth extension plate. The first, second, third, fourth, fifth, sixth, and seventh extension plates all extend vertically, aligned with the vertical extension direction of the side or back panel, and have (substantially) the same height. The hook portion and the connecting plate are disposed vertically spaced apart on the second extension plate, and the blocking portion is disposed vertically spaced apart on the seventh extension plate.

[0029] According to some preferred embodiments of the present invention, the second extension plate is disposed on the first extension plate, and the first extension plate is divided into a first step portion for mating with the back panel and a mating portion for mating with the hook portion to form a groove. The first step portion has an inclined surface on the side closest to the back panel, which slopes toward the back panel from closer to the second extension plate to away from the second extension plate, thereby forming a space for storing glue and achieving water blocking.

[0030] Preferably, the back panel and / or the side panel have a transverse reinforcing plate extending in the horizontal direction and a vertical reinforcing plate extending in the vertical direction, and the vertical reinforcing plate is perpendicular to the panel of the back panel or the side panel.

[0031] In a preferred embodiment, when viewed in the vertical direction, the side of the hook portion close to the sixth extension plate is inclined, and the inclined surface is inclined from close to the second extension plate to away from the second extension plate toward the sixth extension plate, and through the inclined setting of the inner side surfaces of the third extension plate and the fifth extension plate, the inclined surface setting of the first step portion, the second insertion portion being smaller than the depth and minimum width of the first accommodating groove, etc., glue storage and glue overflow are achieved, and connection and sealing are achieved.

[0032] The utility model also provides a back panel or side panel and an integrated bathroom comprising the connection structure described above.

[0033] Compared with the prior art, the benefit of the present invention lies in that: the connection structure between the back panel and the side panel of the present invention is achieved by setting a hook portion and a second extension plate that are perpendicular to each other and a first accommodating portion and a second accommodating portion that are perpendicular to each other. The second extension plate is accommodated and inserted into the first accommodating portion, and the hook portion is accommodated in the second accommodating portion, so that after the back panel and the side panel are combined, they cannot move in the horizontal front and rear directions and left and right directions, thereby achieving a stable connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 and Figure 2 They are schematic diagrams of the three-dimensional structure of the integrated bathroom in different viewing angles in a preferred embodiment of the present invention;

[0036] Figure 3 for Figure 2 Enlarged view of the middle part I;

[0037] Figure 4 This is a schematic diagram of the main structure of the integrated bathroom in a preferred embodiment of the present invention;

[0038] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of AA;

[0039] Figure 6 for Figure 5 Enlarged view of part A in the middle;

[0040] Figure 7 for Figure 5 Enlarged view of middle part B;

[0041] Figure 8 for Figure 5 Enlarged view of the middle C section;

[0042] Figure 9 for Figure 4 Schematic diagram of the cross-sectional structure of the middle BB;

[0043] Figure 10 for Figure 9 Enlarged view of the middle D part;

[0044] Figure 11 for Figure 4 Schematic diagram of the cross-sectional structure of CC;

[0045] Figure 12 for Figure 11 Enlarged view of the middle E part;

[0046] Figure 13 This is a schematic diagram of the three-dimensional structure of a waterproof tray in a preferred embodiment of the present invention;

[0047] Figure 14 This is a schematic diagram of the three-dimensional structure of the upper wall panel in a preferred embodiment of the present invention;

[0048] Figure 15 for Figure 14 Enlarged view of the middle F part;

[0049] Figure 16 Schematic diagram of the three-dimensional structure of the lower wall panel in a preferred embodiment of the present invention;

[0050] Figure 17 for Figure 16 Enlarged view of the middle G section;

[0051] Figure 18 This is a schematic diagram of the three-dimensional structure of the side panel in a preferred embodiment of the present invention;

[0052] Figure 19 for Figure 18 Enlarged view of the middle H section;

[0053] Figure 20 This is a schematic diagram of the three-dimensional structure of another side panel in a preferred embodiment of the present invention;

[0054] In the accompanying drawings: integrated bathroom 1, waterproof tray 2, drain outlet 21, back panel 3, back panel 31, upper wall panel 32, lower wall panel 33, inner cavity 34, side panel 4, side panel 41, first connecting structure 5, first extension plate 51, second extension plate 52, third extension plate 53, fourth extension plate 54, fifth extension plate 55, sixth extension plate 56, seventh extension plate 57, hook 58, connecting plate 59, blocking portion 510, first receiving groove 511, second receiving groove 512 , groove-513, first guide surface-514, second guide surface-515, third guide surface-516, fourth guide surface-517, opening-518, second connecting structure-6, bottom plate-61, top plate-62, positioning block-63, positioning groove-64, limiting plate-65, third connecting structure-7, second bottom plate-71, second top plate-72, insertion block-73, insertion groove-74, second limiting plate-75, transverse reinforcing plate-81, vertical reinforcing plate-82, pull groove-9, mounting plate-10, mounting hole-11. DETAILED DESCRIPTION

[0055] In order to help those skilled in the art better understand the technical solutions of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0056] like Figure 1-20As shown, the integrated bathroom unit 1 in this embodiment includes a waterproof pan 2, a back panel 3, and two side panels 4. The two side panels 4 are connected to either side of the back panel 3, with a first connecting structure 5 between the back panel 3 and the side panels 4. The back panel 3 comprises multiple wall panels located on the same vertical plane, with a second connecting structure 6 provided between two adjacent wall panels. In this embodiment, the back panel 3 is composed of an upper wall panel 32 and a lower wall panel 33. The upper wall panel 32 has an inner cavity 34 for storing items. The two side panels 4 and the back panel 3 are located above the three edges of the waterproof pan 2. The back panel 3 is located above one long side of the waterproof pan 2, and the two side panels 4 are located above the two short sides of the waterproof pan 2. A third connecting structure 7 is provided between the back panel 3 or the side panels 4 and the waterproof pan 2. The back panel 3 and the side panels 4 are provided with horizontally extending transverse reinforcing plates 81 and / or vertically extending vertical reinforcing plates 82. The vertical reinforcing plates 82 are perpendicular to the panels of the back panel 3 or the side panels 4. In this embodiment, a concave drain outlet 21 is provided on the side of the waterproof tray 2 where there is no back plate 3 or side plate 4. The bottom surface of the groove of the drain outlet 21 gradually decreases from the side away from the waterproof tray 2 to the side close to the waterproof tray 2, so as to introduce water into the waterproof tray 2 to prevent it from spreading outward.

[0057] The following three connection structures are introduced:

[0058] (1) First connecting structure 5

[0059] like Figure 12 As shown, the first connecting structure 5 is disposed between the back panel 3 and the side panel 4, connecting the two panels. The first connecting structure 5 includes a first extension plate 51 disposed on the edge of the side panel 4, a second extension plate 52 and a hook 58, a connecting plate 59, and a first and second accommodating portions disposed on the edge of the back panel 3. The first extension plate 51 extends outward from the edge of the panel 41 of the side panel 4 along the direction in which the panel 31 of the back panel 3 extends. The second extension plate 52 is disposed on the first extension plate 51 and extends toward the first accommodating portion. The first accommodating portion is configured to accommodate the second extension plate 52, which is inserted into the first accommodating portion. The hook 58 is disposed on the second extension plate 52 and extends toward the second accommodating portion. The second accommodating portion is configured to accommodate the hook 58. The planes of the hook 58 and the second extension plate 52 are perpendicular to each other, and the accommodating directions (spaces) of the first and second accommodating portions are perpendicular. The connecting plate 59 is disposed between the top of the hook 58 and the first extension plate 51.

[0060] The first receiving portion has a first receiving groove 511 for receiving the second extension plate 52; the second receiving portion has a second receiving groove 512 for receiving the hook portion 58. The opening directions of the first receiving groove 511 and the second receiving groove 512 are perpendicular to each other. The second receiving portion has a blocking portion 510 extending toward the second extension plate 52. A groove 513 is formed between the hook portion 58 and the first extension plate 51. The blocking portion 510 is received in the groove 513. That is, when the back panel 3 and the side panel 4 are assembled, the hook portion 58 is inserted into the second receiving groove 512, and correspondingly, the blocking portion 510 is inserted into the groove 513. Figure 10 、 12 In this embodiment, the first receiving groove 511 is continuously arranged along the vertical direction, and its length is the same as the overall height of the back panel 3. Correspondingly, the second extension plate 52 on the side panel 4 is also continuously arranged. That is, the first extension plate 51 and the second extension plate 52 are continuously arranged at the edge of the side panel 4, forming a concave step. The edge of the back panel 31 and the third extension plate 53 form a convex step that matches the concave step. The two are combined to achieve positioning and connection.

[0061] The end of the first extension plate 51 is flush with the end of the hook portion 58 away from the second extension plate 52. The second extension plate 52 is arranged on the first extension plate 51, and the first extension plate 51 is divided into a first step portion for cooperating with the back panel 31 and a matching portion for cooperating with the hook portion 58 to form a groove 513. The side of the first step portion close to the back panel 3 is a slope, and the slope is inclined toward the back panel 3 from the side close to the second extension plate 52 to the direction away from the second extension plate 52, which is used to form a certain glue storage space to achieve water blocking. The slope of the first step portion is set so that the distance between it and the back panel 31 gradually decreases from the side away from the second extension plate 52 to the direction close to the second extension plate 52, which can prevent water from penetrating inward along the gap between the back panel 3 and the side panel 4 when glue is missing to a certain extent.

[0062] The thickness of the hook portion 58 gradually decreases from the side close to the second extension plate 52 to the side away from the second extension plate 52. Figure 12As shown, from a vertical perspective (top view), the side of the hook portion 58 near the blocking portion 510 is an inclined surface, which is inclined toward the blocking portion 510 along the direction from the second extension plate 52 to the blocking portion 510. Simultaneously, another inclined surface is provided on the first extension plate 51 at a position corresponding to the hook portion 58, which is also inclined toward the blocking portion 510 along the direction from the second extension plate 52 to the blocking portion 510. A groove 513 is formed between the two inclined surfaces, with the thickness of the groove 513 gradually increasing from the side near the second extension plate 52 to the side away from the second extension plate 52, that is, gradually decreasing from the side near the blocking portion 510 to the side near the second extension plate 52. This allows the back panel 3 and side panels 4 to be installed in place, and the gradually tightening groove 513 clamps the blocking portion 510, thereby ensuring a stable connection between the back panel 3 and the side panels 4.

[0063] like Figure 10 As shown, from a horizontal perspective (side view), the side of the hook portion 58 proximal to the blocking portion 510 is an inclined surface that slopes downward toward the blocking portion 510. Another inclined surface is provided on the first extension plate 51 at a position corresponding to the hook portion 58, also sloping downward toward the blocking portion 510. A groove 513 is formed between the two inclined surfaces, such that the thickness of the groove 513 gradually increases from top to bottom, that is, the thickness of the groove 513 gradually increases from the side proximal to the connecting plate 59 to the side distal to the connecting plate 59. The thickness of the blocking portion 510 gradually increases from the side proximal to the connecting plate 59 to the side distal to the connecting plate 59, facilitating insertion. Preferably, the angle between the surface of the blocking portion 510 and the vertical direction is greater than the angle between the inner sidewall of the groove 513 and the vertical direction. This ensures that, once inserted, the blocking portion 510 is clamped in the groove 513, while the hook portion 58 is clamped in the second receiving slot 512.

[0064] That is, the surfaces of the hook portion 58 and the groove 513 in this embodiment have an inclined setting in two dimensions: viewed in the horizontal direction, the two side surfaces in the thickness direction of the blocking portion 510 are inclined surfaces, and the inclination direction is inclined from bottom to top toward the connecting plate 59, cooperating with the hook portion 58 and the inclined surface on the corresponding first extension plate 51, that is, the thickness of the groove 513 and the thickness of the blocking portion 510 gradually decrease from bottom to top, and the inclination degree of the inclined surface is set, which not only facilitates the insertion and installation of the groove 513 and the blocking portion 510, but also enables the blocking portion 510 to be clamped by the gradually tightened groove 513 after the back panel 3 and the side panel 4 are installed in place, so that the connection between the back panel 3 and the side panel 4 is stable; viewed in the vertical direction, the thickness of the groove 513 gradually decreases from the side away from the second extension plate 52 to the side close to the second extension plate 52, so that the blocking portion 510 is clamped in the groove 513 after being inserted into place.

[0065] A first guide surface 514 is provided at the bottom end of the hook portion 58, near the blocking portion 510. A second guide surface 515 is provided at the top end of the blocking portion 510, near the hook portion 58. A third guide surface 516 is provided at the bottom end of the inclined surface of the first extension plate 51, corresponding to the hook portion 58. A fourth guide surface 517 is provided at the end of the second extension plate 52, away from the first extension plate 51, to facilitate insertion into the first receiving groove 511. The guide surfaces are arcuate or inclined.

[0066] The first accommodating portion includes, in sequence, a third extension plate 53, a fourth extension plate 54, and a fifth extension plate 55. The third extension plate 53 and the fifth extension plate 55 are located at either end of the fourth extension plate 54. The third extension plate 53 is formed by extending the front panel 31 of the back panel 3 away from the side panel 4. The third, fourth, and fifth extension plates 53, 54, 55 form a first accommodating groove 511 for accommodating the second extension plate 52. The fourth extension plate 54 extends from the end of the third extension plate 53 along the front panel 31 of the back panel 3. The fifth extension plate 55 extends from the end of the fourth extension plate 54 toward the first extension plate 51. The distance between the third extension plate 53 and the fifth extension plate 55 gradually increases from the side closest to the fourth extension plate 54 to the side further away from the fourth extension plate 54.

[0067] like Figure 12 As shown, vertically, the inner side surfaces of the third and fifth extension plates 53 and 55 near the second extension plate 52 are inclined, sloping from proximal to distal to the fourth extension plate 54 toward the first extension plate 51. This allows the first receiving groove 511 to gradually tighten along the insertion direction of the second extension plate 52, clamping the second extension plate 52 and ensuring a secure connection between the back plate 3 and the side plate 4. Preferably, the third and fifth extension plates 53 and 55 are arranged as a whole at an angle to achieve this effect. That is, the third, fourth, and fifth extension plates 53, 54, and 55 form a "π" or "π" structure to mate with the second extension plate 52.

[0068] The second receiving portion includes a sixth extension plate 56 and a seventh extension plate 57. A blocking portion 510 is disposed on the seventh extension plate 57 and extends toward the second extension plate 52. A second receiving slot 512 for receiving the hook portion 58 is formed between the blocking portion 510 and the sixth extension plate 56. Openings 518 are provided on the sixth extension plate 56 corresponding to the hook portion 58 and the blocking portion 510 to facilitate installation, observation, preparation, and disassembly.

[0069] The second extension plate 52 is provided with a plurality of hooks 58 along the vertical direction, and the seventh extension plate 57 is provided with a plurality of corresponding blocking portions 510 along the vertical direction. Figure 9As shown, a first connecting structure 5 (hook 58, connecting plate 59 and blocking portion 510) is provided at the positions where the upper, middle and lower parts of the upper wall panel 32 and the lower wall panel 33 are connected to the side panel 4, and the first accommodating groove 511, the first extension plate 51 and the second extension plate 52 are continuously arranged.

[0070] In this embodiment, the first extension plate 51 is perpendicular to the panel 41 of the side panel 4 and the second extension plate 52, respectively. The panel 41 of the side panel 4 and the second extension plate 52 are parallel to each other. The hook portion 58 is perpendicular to the second extension plate 52 and horizontal to the first extension plate 51. The fourth extension plate 54, the sixth extension plate 56, the blocking portion 510, and the panel 31 of the back panel 3 are parallel to each other. The seventh extension plate 57 is perpendicular to the sixth extension plate 56. The first extension plate 51, the second extension plate 52, the third extension plate 53, the fourth extension plate 54, the fifth extension plate 55, the sixth extension plate 56, and the seventh extension plate 57 all extend vertically, aligned with the vertical extension direction of the side panel 4 or the back panel, and have (substantially) the same height. The hook portion 58 and the connecting plate 59 are vertically spaced apart on the second extension plate 52. The blocking portion 510 and the opening 518 are vertically spaced apart on the seventh extension plate 57.

[0071] From a vertical perspective, the side of the hook 58 close to the sixth extension plate 56 is inclined, and the inclined surface is inclined from close to the second extension plate 52 to away from the second extension plate 52 toward the opening 518, and through the inclined setting of the inner side surfaces of the third extension plate 53 and the fifth extension plate 55, the inclined surface of the first step portion, the second extension plate being smaller than the depth and minimum width of the first accommodating groove 511, etc., the glue is stored and overflowed, and the connection and sealing are achieved, while at the same time, water is prevented from penetrating inward along the gap to a certain extent.

[0072] The first connecting structure 5 of the present invention is configured by providing a hook portion 58 and a second extension plate 52 that are perpendicular to each other and a first accommodating portion and a second accommodating portion that are perpendicular to each other. The second extension plate 52 is accommodated and inserted into the first accommodating portion, and the hook portion 58 is accommodated in the second accommodating portion, so that after the back panel 3 and the side panel 4 are combined, they cannot move in the horizontal front-to-back direction and left-to-right direction, thereby achieving a stable connection.

[0073] (2) Second connecting structure 6

[0074] The back panel 3 in this embodiment includes an upper wall panel 32 and a lower wall panel 33. The second connecting structure 6 is located between the upper wall panel 32 and the lower wall panel 33, and includes a bottom panel 61 located at the bottom of the upper wall panel 32 and a top panel 62 located at the top of the lower wall panel 33. The bottom panel 61 and the top panel 62 are formed by extending the panels of the upper wall panel 32 and the lower wall panel 33 outward respectively. The bottom panel 61 has a positioning block 63 extending toward the top panel 62, and the top panel 62 has a positioning groove 64 for accommodating the positioning block 63. The positioning block 63 is inserted into the positioning groove 64. Figure 6 shown.

[0075] The top panel 62 has a limiting plate 65 at one end, away from the lower wall panel 33, extending toward the upper wall panel 32. The bottom panel 61 is located between the upper wall panel 32 and the limiting plate 65. The height of the limiting plate 65 is greater than the thickness of the bottom panel 61. A vertical reinforcing plate 82, perpendicular to the wall panel, is provided between the bottom surface of the top panel 62 and the lower wall panel 33.

[0076] The thickness of the bottom plate 61 decreases from the side away from the limiting plate 65 to the side closer to the limiting plate 65, reaching its thickest position corresponding to the positioning groove 64. The end of the bottom plate 61 away from the limiting plate 65 has a groove 9 extending vertically and horizontally. The groove 9 accommodates a certain volume of water and disperses and guides it, preventing it from accumulating in the gap between the upper wall panel 32 and the lower wall panel 33 and seeping inward.

[0077] The height of positioning block 63 is less than the depth of positioning groove 64, and the width of positioning block 63 is less than the width of positioning groove 64. The thickness of positioning block 63 gradually decreases from top to bottom, facilitating insertion and fit. A certain space is formed between positioning block 63 and the inner wall of positioning groove 64 to allow for sealing by retaining the glue.

[0078] Positioning blocks 63 are disposed continuously or at intervals on bottom plate 61; correspondingly, positioning grooves 64 are disposed continuously or at intervals on top plate 62. In this embodiment, positioning blocks 63 and positioning grooves 64 are preferably disposed continuously, and their length is consistent with the overall width of back panel 31, that is, positioning groove 64 is a single long groove.

[0079] The bottom plate 61 includes a first support portion and a second support portion, with the positioning block 63 located between the first support portion and the second support portion. The first support portion is close to the upper wall panel 32 or the lower wall panel 33, and the second support portion is close to the limiting plate 65. Preferably, the length of the first support portion is shorter than the length of the second support portion, that is, the positioning block 63 is arranged closer to the panel of the back panel 3.

[0080] The first support portion has an inclined surface on its side near the lower wall panel 33. This surface slopes from near the positioning block 63 to away from the positioning block 63, toward the lower wall panel 33. This creates a space for rubber to be stored, thereby blocking water and preventing water from seeping inward. The bottom surface of the second support portion is higher than the bottom surface of the first support portion, thereby ensuring rubber storage.

[0081] The second connecting structure 6 of the present invention comprises a bottom plate 61 disposed at the bottom of the upper wall panel 32 and a top plate 62 disposed at the top of the lower wall panel 33. The top plate 62 supports the upper wall panel 32 and the bottom plate 61. Positioning blocks 63 are provided on the bottom plate 61, and positioning grooves 64 are provided on the top plate 62 to achieve a fixed connection between the upper wall panel 32 and the lower wall panel 33. This structure, in conjunction with the first connecting structure 5, provides a secure connection between the back panel 3 and the side panels 4.

[0082] (3) Third connecting structure 7

[0083] The third connection structure 7 is arranged between the back plate 3 or the side plate 4 and the waterproof tray 2, and is similar to the second connection structure 6, including a second bottom plate 71 arranged at the bottom of the panel of the back plate 3 or the side plate 4 and a second top plate 72 arranged at the top of the edge of the waterproof tray 2. The second bottom plate 71 is supported on the second top plate 72. The second bottom plate 71 has an insertion block 73 extending toward the second top plate 72, and the second top plate 72 has an insertion groove 74 corresponding to the insertion block 73. The second top plate 72 has a second limiting plate 75 extending toward the back plate 3 or the side plate 4 on the side away from the waterproof tray 2. The insertion block 73 and the insertion groove 74 are arranged close to the second limiting plate 75. In this embodiment, the insertion block 73 and the insertion groove 74 are arranged at intervals.

[0084] The vertical plane on which the insertion block 73 and insertion slot 74 of the third connecting structure 7 are located is located on two different planes than the vertical plane on which the positioning block 63 and positioning slot 64 of the second connecting structure 6 are located. Specifically, in this embodiment, the insertion block 73 and insertion slot 74 are disposed at the end of the second bottom plate 71 away from the back panel 31, while the positioning block 63 and positioning slot 64 of the second connecting structure 6 are disposed closer to the back panel 31. By arranging the insertion block 73 and insertion slot 74 of the third connecting structure 7 on different vertical planes than the positioning block 63 and positioning slot 64 of the second connecting structure 6, the support and connection effects are further enhanced, ensuring the verticality of the panels and the stability of the connection.

[0085] like Figure 7 As shown, in this embodiment, viewed horizontally, similar to the second connecting structure 6, the insertion block 73 is smaller than the insertion slot 74. The inner sidewall of the insertion slot 74 is inclined to facilitate the storage of glue. Furthermore, the side of the second bottom plate 71 near the second top plate 72 is inclined, sloping toward the waterproof tray 2 from the second limiting plate 75 to the waterproof tray 2, similarly trapping the glue and preventing water from seeping into the gap.

[0086] In this embodiment, in the first connecting structure 5, the second connecting structure 6, and the third connecting structure 7, the two plates are arranged non-parallel on the side close to the shower space (above the waterproof tray). For example, in the first connecting structure 5, the first step portion of the first extension plate 51 is an inclined surface on the side close to the back plate 3; in the second connecting structure 6, the first support portion of the bottom plate 61 is an inclined surface on the side close to the lower wall plate 33; in the third connecting structure 7, the second bottom plate 71 is an inclined surface on the side close to the second top plate 72; this causes the gap to gradually decrease from the side close to the waterproof tray to the side away from the waterproof tray, with the gap being the largest on the side close to the waterproof tray, which can prevent water from penetrating inward along the gap to a certain extent when no glue is applied or glue is missing.

[0087] In this embodiment, mounting plates 10 extend outward from the top of the back panel 3, the top of the side panels 4, and the edge of the side panels 4 facing away from the back panel 3. Mounting holes 11 are defined in mounting plates 10 for securing to a keel or wall. Mounting holes 11 in this embodiment are tapered and non-through, meaning their depth is less than the thickness of mounting plates 10, enabling better securement.

[0088] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A connection structure between a back panel and a side panel, characterized in that: It includes a first extension plate, a second extension plate and a hook portion arranged on the edge of the side panel, and a first accommodating portion and a second accommodating portion arranged on the edge of the back panel, the first extension plate extends outward from the panel edge of the side panel along the panel extension direction of the back panel, the second extension plate is arranged on the first extension plate and extends toward the first accommodating portion, the first accommodating portion is used to accommodate the second extension plate, the hook portion is arranged on the second extension plate and extends toward the second accommodating portion, the second accommodating portion is used to accommodate the hook portion, the planes where the hook portion and the second extension plate are located are perpendicular to each other, and the accommodating directions of the first accommodating portion and the second accommodating portion are perpendicular.

2. The connection structure according to claim 1, wherein: The first accommodating portion has a first accommodating groove for accommodating the second extension plate; the second accommodating portion has a second accommodating groove for accommodating the hook portion, and the opening directions of the first accommodating groove and the second accommodating groove are perpendicular to each other.

3. The connection structure according to claim 1, wherein: The second receiving portion has a blocking portion extending toward the second extension plate. A groove is formed between the hook portion and the first extension plate, and the blocking portion is received in the groove.

4. The connection structure according to claim 1, wherein: The thickness of the hook portion gradually decreases from a side close to the second extension plate to a side away from the second extension plate.

5. The connection structure according to claim 3, characterized in that: The thickness of the groove gradually increases from a side close to the second extension plate to a side away from the second extension plate.

6. The connection structure according to claim 3, characterized in that: A connecting plate is provided between the top of the hook portion and the first extension plate, and the thickness of the groove gradually increases from a side close to the connecting plate to a side away from the connecting plate.

7. The connection structure according to claim 6, characterized in that: The thickness of the blocking portion gradually increases from a side close to the connecting plate to a side away from the connecting plate.

8. The connection structure according to claim 3, characterized in that: A first guide surface is provided on a side of the bottom end of the hook portion close to the blocking portion; and a second guide surface is provided on a side of the top end of the blocking portion close to the hook portion.

9. The connection structure according to claim 2, characterized in that: The first accommodating portion includes a third extension plate, a fourth extension plate and a fifth extension plate in sequence, the third extension plate is formed by extending the panel of the back plate in a direction away from the side plate, and the third extension plate, the fourth extension plate and the fifth extension plate form a first accommodating groove for accommodating the second extension plate.

10. The connection structure according to claim 9, characterized in that: The distance between the third extension plate and the fifth extension plate gradually increases from a side close to the fourth extension plate to a side away from the fourth extension plate.

11. The connection structure according to claim 3, characterized in that: The second accommodating portion includes a sixth extension plate and a seventh extension plate. The blocking portion is disposed on the seventh extension plate and extends toward the second extension plate. A second accommodating groove for accommodating the hook portion is formed between the blocking portion and the sixth extension plate.

12. The connection structure according to claim 11, characterized in that: A plurality of hooks are provided on the upper surface of the second extension plate in the up-down direction, and a plurality of corresponding blocking portions are provided on the upper surface of the seventh extension plate in the up-down direction.

13. A backplane, characterized in that: The invention comprises a connection structure between a back panel and side panels as described in any one of claims 1 to 12.

14. A side panel, characterized in that: The invention comprises a connection structure between a back panel and side panels as described in any one of claims 1 to 12.

15. A bathroom unit, characterized by: It includes the back panel according to claim 13 or the side panel according to claim 14, or the connection structure between the back panel and the side panel according to any one of claims 1 to 12.

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