A dry-hanging system for decorative panels and its installation method

Abstract

This invention discloses a dry-hanging system for decorative panels and its installation method, comprising: a horizontal guide rail with an L-shaped cross-section, including vertical and horizontal plates; a central connector with a Z-shaped cross-section, including a middle plate, lower plate, upper plate, pressure plate, clamping plate, and fasteners; and a panel back fastener with a Z-shaped cross-section, including a connecting plate, inner plate, and outer plate. This invention has the following advantages and effects: by setting up a dry-hanging system with adjustable back gap, reliable connection, and convenient installation, it can cope with uneven walls, providing a 5mm back gap adjustment space. Simultaneously, it has high structural strength, is suitable for heavy stone and ceramic tile dry-hanging finishes, and the dry-hanging method for installing decorative panels is quick and easy.

Description

Technical Field

[0001] This invention relates to the field of decoration and renovation, and in particular to a dry-hanging system for decorative panels and its installation method. Background Technology

[0002] Decorative panels, as exterior wall decoration materials, generally include stone and ceramic tiles. Currently, the industry typically uses two methods to install decorative panels on structural walls: one is wet hanging, and the other is dry hanging.

[0003] Traditional dry-hanging methods include the following:

[0004] The first method is to use traditional screws for fixing, which is low in cost but lacks flexibility.

[0005] The second method uses a special hook and track system for fixing. Although it supports a certain degree of horizontal movement, the adjustment of the gap between the hook and the wall is limited.

[0006] The third method is to use a magnetic suspension device for fixing. Although it is convenient to operate, it is only suitable for panels made of specific materials.

[0007] The fourth method is to use a spring clamping mechanism for fixing. Although it is easy to operate, it does not perform well under heavy loads.

[0008] Therefore, it is particularly important to design a dry-hung system that is flexible, adjustable, safe, and reliable. Summary of the Invention

[0009] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a dry-hanging system for decorative panels that is flexible, adjustable, safe and reliable.

[0010] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a dry-hanging system for decorative panels, comprising:

[0011] The horizontal guide rail has an L-shaped cross-section and includes a vertical plate and a horizontal plate. The vertical plate is attached to the wall, and the horizontal plate is horizontally positioned above the vertical plate. The vertical plate has multiple bolt holes and multiple self-tapping screw holes spaced apart. The self-tapping screw holes are arranged in pairs and distributed on both sides of the bolt holes. Nuts are welded and fixed to the back of the vertical plate, and the nuts are aligned with the bolt holes.

[0012] The central connector, with a Z-shaped cross-section, includes a middle plate, a lower plate, an upper plate, a pressure plate, a clamping plate, and fasteners. The middle plate is horizontally positioned and fits against the lower end face of the horizontal plate. The lower plate is vertically positioned at one end of the middle plate and abuts against the side wall of the vertical plate. The upper plate is vertically positioned at the other end of the middle plate and fits against the side wall of the horizontal plate. The pressure plate is horizontally positioned on the back side of the upper plate and forms a slot with the middle plate for the horizontal plate to be inserted. The clamping plate is vertically positioned on the upper end face of the pressure plate and forms a clamping groove with the upper plate. The fasteners are used to fix the lower plate.

[0013] The back buckle of the panel has a Z-shaped cross-section and includes a connecting plate, an inner plate, and an outer plate. The connecting plate is horizontally positioned and presses against the upper end face of the upper plate. The inner plate is vertically positioned at one end of the connecting plate and is used to insert into the clamping groove. The outer plate is vertically positioned at the other end of the connecting plate and is used to connect to the back side of the decorative panel.

[0014] In a preferred embodiment, the present invention may be further configured such that the fastener includes a screw and a washer, the screw being used to pass through the bolt hole and being threadedly connected to the nut, and the washer being fixed to the outer wall of the screw and clamping the inner side of the lower plate.

[0015] In a preferred embodiment, the present invention can be further configured such that: a retaining strip is horizontally provided on the lower end face of the connecting plate to clamp the outer wall of the upper plate.

[0016] In a preferred embodiment, the present invention may be further configured such that the clamping plate is provided with a fine-tuning mechanism for controlling the vertical sliding of the inner plate within the clamping groove.

[0017] In a preferred embodiment, the present invention can be further configured such that: the fine-tuning mechanism includes a slider, a slide rod, and a driving member; the slider is horizontally slidably connected to the inner wall of the clamping plate; the slide rod is cylindrical and horizontally disposed on the slider; the clamping plate is horizontally provided with a strip-shaped hole for the slide rod to slide; the upper plate is inclinedly provided with an elongated sliding hole for the slide rod to slide; and the driving member is used to control the horizontal sliding of the slider.

[0018] In a preferred embodiment, the present invention may be further configured such that: the driving component includes a pair of driving seats, a screw, and a handwheel; the driving seats are disposed at both ends of the clamping plate; the screw is horizontally rotatably connected to the pair of driving seats and threadedly connected to the slider; and the handwheel is disposed at the end of the screw.

[0019] In a preferred embodiment, the present invention may be further configured such that: a groove is horizontally provided on the back side of the upper plate for the slide rod to slide horizontally.

[0020] Another objective of this invention is to provide a method for installing decorative panels that offers efficient construction results.

[0021] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a method for installing a decorative panel, comprising the following steps:

[0022] S1, Foundation wall positioning: Lay out lines on the wall according to the drawings and locate the positions of bolt holes and self-tapping screw holes. Then drill holes at the located positions. The diameter of the bolt hole is 2mm larger than the outer diameter of the nut, and the depth is 1mm larger than the thickness of the nut.

[0023] S2, Install the horizontal guide rail, place the vertical plate on the horizontal guide rail against the wall, and insert the nut on the back of the vertical plate into the pre-drilled hole so that the back of the horizontal guide rail should be in contact with the wall. Then, pass the self-tapping screw through the pre-drilled self-tapping screw hole on the vertical plate and fix it to the wall.

[0024] S3. Install the center connector. Insert the center connector into the horizontal guide rail, so that the horizontal plate on the horizontal guide rail is inserted into the slot between the middle plate and the pressure plate. At the same time, make the middle plate abut against the lower end face of the horizontal plate. Then control the screw to rotate, and under the action of the screw and the washer, the position of the center connector is initially fixed. At the same time, the gap distance between the center connector and the wall can be adjusted. The gap size is adjustable from 17-22mm, so a 22mm diameter electrical conduit can be laid.

[0025] S4. Install the back clip of the panel. Place the outer panel of the back clip against the back of the decorative panel, and then use self-tapping screws to install and fix the back clip.

[0026] S5, Hanging decorative panel: Insert the inner panel on the back buckle of the decorative panel vertically into the groove formed between the upper panel and the clamping plate to achieve the snap-fit ​​fixation of the decorative panel.

[0027] S6, horizontal fine adjustment, controls the decorative panel to slide along the length of the horizontal guide rail with the back buckle of the panel, with a maximum sliding distance of 12mm, to achieve horizontal position adjustment of the decorative panel;

[0028] S7, vertical fine adjustment, controls the handwheel to drive the screw to rotate, thereby realizing the horizontal adjustment of the slider and the slide rod. At this time, under the cooperation of the slide rod and the inclined sliding hole, the back buckle of the panel is controlled to slide along the vertical direction, with a maximum sliding distance of 8mm, realizing the vertical position adjustment of the decorative panel;

[0029] S8, back clearance distance adjustment, controls the screw rotation, causing the screw and washer to drive the central connector to slide, the central connector to drive the back buckle of the panel and the decorative panel to slide synchronously, thereby realizing the back clearance distance adjustment of the decorative panel and making all the decorative panels in the same horizontal plane position.

[0030] In summary, the present invention has the following beneficial effects:

[0031] 1. By setting up an adjustable back gap, reliable connection and easy installation dry-hanging system, it can cope with uneven walls, provide 5mm back gap adjustment space, and has high structural strength. It is suitable for heavy stone and ceramic tile dry-hanging cladding, and the dry-hanging method for installing decorative panels is quick and easy.

[0032] 2. By setting up a dry-hanging system that can slide and adjust along the horizontal and vertical directions of the wall, the position adjustment of the decorative panels can be met, and the precise installation of the decorative panels can be achieved. Attached Figure Description

[0033] Figure 1 This is a schematic diagram illustrating the installation and usage status of an embodiment;

[0034] Figure 2 This is a structural schematic diagram of the horizontal guide rail, the central connector, and the plate back buckle in the embodiment.

[0035] Figure 3 This is a schematic diagram of the fine-tuning mechanism and drive component in the embodiment;

[0036] Figure 4 This is a schematic diagram of the connection relationship in the embodiment.

[0037] Reference numerals: 1. Horizontal guide rail; 11. Vertical plate; 12. Horizontal plate; 13. Bolt hole; 14. Self-tapping screw hole; 15. Nut; 2. Central connector; 21. Middle plate; 22. Lower plate; 23. Upper plate; 24. Pressure plate; 25. Clamping plate; 26. Fastener; 261. Screw; 262. Washer; 27. Slot; 28. Clamping groove; 3. Plate back buckle; 31. Connecting plate; 32. Inner plate; 33. Outer plate; 34. Locking strip; 4. Fine adjustment mechanism; 41. Slider; 42. Slide rod; 43. Strip hole; 44. Sliding hole; 45. Slide groove; 5. Driving component; 51. Driving base; 52. Screw; 53. Handwheel. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings.

[0039] Example 1:

[0040] like Figure 1 , Figure 2 As shown, a dry-hanging system for decorative panels includes a horizontal guide rail 1, a central connector 2, and a panel back buckle 3.

[0041] like Figure 2 , Figure 3 , Figure 4As shown, the horizontal guide rail 1 has an L-shaped cross-section and includes a vertical plate 11 and a horizontal plate 12. The vertical plate 11 is attached to the wall, and the horizontal plate 12 is horizontally positioned above the vertical plate 11. The horizontal guide rail 1 can be provided with intermittently arranged easy-break holes for quick and easy breakage, eliminating the need for cutting during installation and improving construction convenience.

[0042] like Figure 2 , Figure 3 , Figure 4 As shown, the vertical plate 11 is provided with a plurality of bolt holes 13 and a plurality of self-tapping screw holes 14 at intervals. The self-tapping screw holes 14 are arranged in pairs and distributed on both sides of the bolt holes 13. Nuts 15 are welded and fixed on the back side of the vertical plate 11, and the nuts 15 are aligned with the bolt holes 13.

[0043] like Figure 2 , Figure 3 , Figure 4 As shown, the central connector 2 has a Z-shaped cross-section and includes a middle plate 21, a lower plate 22, an upper plate 23, a pressure plate 24, a clamping plate 25, and fasteners 26. The middle plate 21 is horizontally positioned and fits against the lower end face of the horizontal plate 12. The lower plate 22 is vertically positioned at one end of the middle plate 21 and abuts against the side wall of the vertical plate 11. The upper plate 23 is vertically positioned at the other end of the middle plate 21 and fits against the side wall of the horizontal plate 12.

[0044] like Figure 2 , Figure 3 , Figure 4 As shown, the pressure plate 24 is horizontally disposed on the back side of the upper plate 23, and forms a slot 27 between it and the middle plate 21 for the horizontal plate 12 to be inserted. The clamping plate 25 is vertically disposed on the upper end face of the pressure plate 24, and forms a clamping groove 28 between it and the upper plate 23.

[0045] like Figure 2 , Figure 3 , Figure 4 As shown, fastener 26 is used to fix the lower plate 22. Fastener 26 includes screw 261 and washer 262. Screw 261 is used to pass through bolt hole 13 and is threaded to nut 15. Washer 262 is fixed to the outer wall of screw 261 and clamps the inner side of lower plate 22.

[0046] like Figure 2 , Figure 3 , Figure 4 As shown, the cross-section of the plate back buckle 3 is Z-shaped and includes a connecting plate 31, an inner plate 32, and an outer plate 33. The connecting plate 31 is horizontally positioned and presses against the upper end face of the upper plate 23. A retaining strip 34 is horizontally positioned on the lower end face of the connecting plate 31 to clamp the outer wall of the upper plate 23, thereby increasing the stability of the connection position.

[0047] like Figure 2 , Figure 3 , Figure 4As shown, the inner panel 32 is vertically disposed at one end of the connecting plate 31 and is used to insert into the clamping groove 28. The outer panel 33 is vertically disposed at the other end of the connecting plate 31 and is used to connect to the back side of the decorative panel.

[0048] When installing the decorative panel, first mark the lines on the wall according to the drawings and locate the positions of the bolt holes 13 and self-tapping screw holes 14. Then drill holes at the located positions. Next, lean the vertical plate 11 on the horizontal guide rail 1 against the wall and insert the nut 15 on the back of the vertical plate 11 into the pre-drilled hole, so that the back of the horizontal guide rail 1 is flush with the wall. Then, pass the self-tapping screws through the pre-drilled self-tapping screw holes 14 on the vertical plate 11 and fix it to the wall.

[0049] Then, the central connector 2 is snapped into the horizontal guide rail 1, so that the horizontal plate 12 on the horizontal guide rail 1 is inserted into the slot 27 between the middle plate 21 and the pressure plate 24, and the middle plate 21 abuts against the lower end face of the horizontal plate 12. Then, the screw 261 is rotated, and under the action of the screw 261 and the washer 262, the position of the central connector 2 is initially fixed, and the back gap distance between the central connector 2 and the wall can also be adjusted.

[0050] Next, place the outer plate 33 on the back clip 3 against the back of the decorative panel, and then use self-tapping screws to install and fix the back clip 3. Then, vertically insert the inner plate 32 on the back clip 3 of the decorative panel into the groove 28 formed between the upper plate 23 and the clamping plate 25 to achieve the snap-fit ​​fixation of the decorative panel.

[0051] Then, control the decorative panel to move the back clip 3 along the length of the horizontal guide rail 1, thereby adjusting the horizontal position of the decorative panel. Next, control the screw 261 to rotate, causing the screw 261 and washer 262 to move the central connector 2. The central connector 2 then moves the back clip 3 and the decorative panel synchronously, thus adjusting the back gap distance of the decorative panels and ensuring all decorative panels are on the same horizontal plane, completing the installation and fixing of the decorative panels.

[0052] Therefore, by setting up a dry-hanging system with adjustable back gap, reliable connection and convenient installation, it can cope with uneven walls, provide 5mm back gap adjustment space, and has high structural strength, making it suitable for heavy stone and ceramic tile dry-hanging finishes. In addition, the dry-hanging method for installing decorative panels is quick and easy.

[0053] like Figure 2 , Figure 3 , Figure 4 As shown, the clamping plate 25 is provided with a fine-tuning mechanism 4 for controlling the vertical sliding of the inner plate 32 in the clamping groove 28. The fine-tuning mechanism 4 includes a slider 41, a slide rod 42 and a driving component 5.

[0054] like Figure 2 , Figure 3 , Figure 4 As shown, the slider 41 is horizontally slidably connected to the inner wall of the clamping plate 25, and the slide rod 42 is cylindrical and horizontally mounted on the slider 41. The clamping plate 25 has a horizontally arranged strip-shaped hole 43 for the slide rod 42 to slide, and the upper plate 23 has an inclinedly arranged elongated sliding hole 44 for the slide rod 42 to slide. The back side of the upper plate 23 has a horizontally arranged groove 45 for the slide rod 42 to slide horizontally, in order to increase the stability of the slide rod 42 during the sliding process.

[0055] like Figure 2 , Figure 3 , Figure 4 As shown, the drive unit 5 is used to control the horizontal sliding of the slider 41. The drive unit 5 includes a pair of drive seats 51, a screw 52, ​​and a handwheel 53. The drive seats 51 are located at both ends of the clamping plate 25. The screw 52 is horizontally rotatably connected to the pair of drive seats 51 and threadedly connected to the slider 41. The handwheel 53 is located at the end of the screw 52.

[0056] After the decorative panel is suspended, the control handwheel 53 drives the screw 52 to rotate, thereby adjusting the slider 41 and the slide rod 42 in the horizontal direction. At this time, under the cooperation of the slide rod 42 and the inclined sliding hole 44, the control panel back buckle 3 slides in the vertical direction, thereby adjusting the vertical position of the decorative panel.

[0057] Example 2:

[0058] A method for installing a decorative panel includes the following steps:

[0059] S1. Foundation wall positioning: Lay out lines on the wall according to the drawings and locate the positions of bolt holes 13 and self-tapping screw holes 14. Then drill holes at the located positions. The diameter of bolt hole 13 is 2mm larger than the outer diameter of nut 15, and the depth is 1mm larger than the thickness of nut 15.

[0060] S2, install the horizontal guide rail 1, place the vertical plate 11 on the horizontal guide rail 1 against the wall, and insert the nut 15 on the back of the vertical plate 11 into the pre-drilled hole so that the back of the horizontal guide rail 1 should fit against the wall. Then, pass the self-tapping screw through the pre-drilled self-tapping screw hole 14 on the vertical plate 11 and fix it to the wall.

[0061] S3, Install the center connector 2, and snap the center connector 2 into the horizontal guide rail 1 so that the horizontal plate 12 on the horizontal guide rail 1 is inserted into the slot 27 between the middle plate 21 and the pressure plate 24. At the same time, the middle plate 21 abuts against the lower end face of the horizontal plate 12. Then, control the screw 261 to rotate, and under the action of the screw 261 and the washer 262, the position of the center connector 2 is initially fixed. At the same time, the gap distance between the center connector 2 and the wall can be adjusted. The gap size is adjustable from 17-22mm, so a 22mm diameter electrical conduit can be laid.

[0062] S4, Install the back clip 3 of the panel, place the outer panel 33 on the back clip 3 against the back side of the decorative panel, and then use self-tapping screws to install and fix the back clip 3.

[0063] S5, Hanging decorative panel: Insert the inner plate 32 on the back buckle 3 of the decorative panel vertically into the groove 28 formed between the upper plate 23 and the clamping plate 25 to achieve the snap-fit ​​fixation of the decorative panel.

[0064] S6, horizontal fine adjustment, controls the decorative panel to move the back buckle 3 along the length of the horizontal guide rail 1, with a maximum sliding distance of 12mm, to achieve horizontal position adjustment of the decorative panel.

[0065] S7, vertical fine adjustment, control handwheel 53 to drive screw 52 to rotate, thereby realizing the horizontal adjustment of slider 41 and slide rod 42. At this time, under the cooperation of slide rod 42 and inclined sliding hole 44, control plate back buckle 3 to slide along the vertical direction, with a maximum sliding distance of 8mm, realizing the vertical position adjustment of decorative plate.

[0066] S8, back clearance distance adjustment, control screw 261 rotates, so that screw 261 and washer 262 drive the center connector 2 to slide, the center connector 2 drives the back buckle 3 of the plate and the decorative plate to slide synchronously, thereby realizing the back clearance distance adjustment of the decorative plate, so that all the decorative plates are in the same horizontal plane position.

[0067] The specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A dry-hanging system for decorative panels, characterized in that: include: A horizontal guide rail (1) has an L-shaped cross-section and includes a vertical plate (11) and a horizontal plate (12). The vertical plate (11) is attached to the wall, and the horizontal plate (12) is horizontally positioned above the vertical plate (11). The vertical plate (11) has multiple bolt holes (13) and multiple self-tapping screw holes (14) spaced apart. The self-tapping screw holes (14) are arranged in pairs and distributed on both sides of the bolt holes (13). Nuts (15) are welded and fixed to the back of the vertical plate (11), and the nuts (15) are aligned with the bolt holes (13). The central connector (2), with a Z-shaped cross-section, includes a middle plate (21), a lower plate (22), an upper plate (23), a pressure plate (24), a clamping plate (25), and fasteners (26). The middle plate (21) is horizontally positioned and fits against the lower end face of the horizontal plate (12). The lower plate (22) is vertically positioned at one end of the middle plate (21) and abuts against the side wall of the vertical plate (11). The upper plate (23) is vertically positioned on the middle plate (21). The other end of 21) is attached to the side wall of the horizontal plate (12). The pressure plate (24) is horizontally arranged on the back side of the upper plate (23) and forms a slot (27) between it and the middle plate (21) for the horizontal plate (12) to be inserted. The clamping plate (25) is vertically arranged on the upper end face of the pressure plate (24) and forms a clamping groove (28) between it and the upper plate (23). The fastener (26) is used to fix the lower plate (22). The back buckle (3) of the plate has a Z-shaped cross section and includes a connecting plate (31), an inner plate (32) and an outer plate (33). The connecting plate (31) is horizontally arranged and presses against the upper end face of the upper plate (23). The inner plate (32) is vertically arranged at one end of the connecting plate (31) and is used to insert into the clamping groove (28). The outer plate (33) is vertically arranged at the other end of the connecting plate (31) and is used to connect the back side of the decorative plate. The clamping plate (25) is provided with a fine-tuning mechanism (4) for controlling the vertical sliding of the inner plate (32) in the clamping groove (28); The fine-tuning mechanism (4) includes a slider (41), a slide rod (42), and a driving member (5). The slider (41) is horizontally slidably connected to the inner wall of the clamping plate (25). The slide rod (42) is cylindrical and horizontally arranged on the slider (41). The clamping plate (25) is horizontally provided with a strip-shaped hole (43) for the slide rod (42) to slide. The upper plate (23) is inclinedly provided with a long strip-shaped sliding hole (44) for the slide rod (42) to slide. The driving member (5) is used to control the horizontal sliding of the slider (41). The driving component (5) includes a pair of driving seats (51), a screw (52) and a handwheel (53). The driving seats (51) are disposed at both ends of the clamping plate (25). The screw (52) is horizontally rotatably connected to the pair of driving seats (51) and threadedly connected to the slider (41). The handwheel (53) is disposed at the end of the screw (52). The upper plate (23) is provided with a horizontal groove (45) on the back side for the slide rod (42) to slide horizontally.

2. The dry-hanging system for decorative panels according to claim 1, characterized in that: The fastener (26) includes a screw (261) and a washer (262). The screw (261) is used to pass through the bolt hole (13) and is threaded to the nut (15). The washer (262) is fixed to the outer wall of the screw (261) and clamps the inner side of the lower plate (22).

3. The dry-hanging system for decorative panels according to claim 1, characterized in that: The lower end face of the connecting plate (31) is provided with a retaining strip (34) for clamping the outer wall of the upper plate (23).

4. A method for installing a decorative panel, used for installing a dry-hanging system of the decorative panel as described in any one of claims 1-3, characterized in that: Includes the following steps: S1, Foundation wall positioning: Lay out lines on the wall according to the drawings and locate the positions of bolt holes (13) and self-tapping screw holes (14). Then drill holes at the located positions. The diameter of the bolt hole (13) is 2mm larger than the outer diameter of the nut (15), and the depth is 1mm larger than the thickness of the nut (15). S2, install the horizontal guide rail (1), place the vertical plate (11) on the horizontal guide rail (1) against the wall, and insert the nut (15) on the back of the vertical plate (11) into the pre-drilled hole so that the back of the horizontal guide rail (1) should be in contact with the wall. Then, pass the self-tapping screw through the pre-drilled self-tapping screw hole (14) on the vertical plate (11) and fix it to the wall. S3, install the center connector (2), and insert the center connector (2) into the horizontal guide rail (1), so that the horizontal plate (12) on the horizontal guide rail (1) is inserted into the slot (27) between the middle plate (21) and the pressure plate (24), and at the same time, the middle plate (21) abuts against the lower end face of the horizontal plate (12), and then control the screw (261) to rotate, and under the action of the screw (261) and the washer (262), the position of the center connector (2) is initially fixed, and the gap distance between the center connector (2) and the wall can be adjusted. The gap size is adjustable from 17-22mm, so a 22mm diameter electrical conduit can be laid. S4, install the back clip (3), place the outer plate (33) on the back clip (3) against the back side of the decorative panel, and then use self-tapping screws to install and fix the back clip (3); S5, Hanging decorative panel: Insert the inner plate (32) on the back buckle (3) of the decorative panel vertically into the groove (28) formed between the upper plate (23) and the clamping plate (25) to achieve the snap-fit ​​fixing of the decorative panel; S6, horizontal fine adjustment, control the decorative panel to drive the back buckle (3) of the panel to slide along the length direction of the horizontal guide rail (1), with a maximum sliding distance of 12mm, to realize the horizontal position adjustment of the decorative panel; S7, vertical fine adjustment, control the handwheel (53) to drive the screw (52) to rotate, thereby realizing the horizontal adjustment of the slider (41) and the slide rod (42). At this time, under the cooperation of the slide rod (42) and the inclined sliding hole (44), the back buckle (3) of the control plate slides along the vertical direction, with a maximum sliding distance of 8mm, realizing the vertical position adjustment of the decorative plate; S8, back gap distance adjustment, control screw (261) rotates, so that screw (261) and washer (262) drive the center connector (2) to slide, the center connector (2) drives the back buckle (3) of the plate and the decorative plate to slide synchronously, thereby realizing the back gap distance adjustment of the decorative plate, so that all the decorative plates are in the same horizontal position.

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