An assembly structure for a glass shower wall

Abstract

This invention discloses an assembly structure for a glass shower wall, comprising three glass panels, several horizontal rails, several side rails, three rail sleeves, assembly components, several sliding components, and several calibration components. The three glass panels are respectively mounted on the horizontal rails, with two horizontal rails capable of being interlocked. The three glass panels slide longitudinally on the side rails. This invention assembles the bottom layer of glass and its frame, sliding it into the rail sleeves via the side rails. The second and first layers of glass and their frames are then installed in the same manner. After the top layer is installed, two limiting end caps are inserted into the end plugs, and then a telescopic beam is inserted into the protrusions on the limiting end caps. Finally, it is secured with screws. This allows for modular assembly of multiple layers of glass panels and their corresponding frames, while the two plugs can flexibly interlock, enabling arbitrary length splicing and positional combination of the horizontal and side rails.

Description

Technical Field

[0001] This invention relates to the field of glass wall technology, and more particularly to an assembly structure for a glass shower wall. Background Technology

[0002] Shower glass walls are a common dry and wet separation device in bathroom spaces. They are composed of tempered glass panels and a track frame. They can divide the shower area, prevent water splashing, and combine a sense of transparency with space utilization. They are widely used in bathroom scenarios such as homes and hotels.

[0003] The components used in existing shower glass walls are usually made of standardized profiles. The tracks and connectors are manufactured and processed according to uniform specifications. During assembly, they are combined and assembled using conventional mechanical connection methods. Installers complete the track connection and component fixing according to the established procedures, thereby forming a complete glass wall support system.

[0004] However, during actual installation, the glass panel makes rigid contact when sliding in the guide rail, which often results in high sliding resistance and problems such as jamming, abnormal noise, and shaking. This can easily cause the glass edges to chip or scratch, affecting the quality and overall aesthetics of the shower glass wall.

[0005] Accordingly, this application proposes an assembly structure for a glass shower wall. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an assembly structure for a glass shower wall.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An assembly structure for a glass shower wall includes three glass panels, several horizontal rails, several side rails, three rail sleeves, assembly components, several sliding components, and several calibration components.

[0009] The three glass panels are respectively placed on several horizontal rails, and two of the horizontal rails can be spliced ​​together. The three glass panels slide longitudinally on several side rails. Several embedded columns are provided on one side of each glass panel. The three rail sleeves are slidably connected to the three side rails near the embedded columns. The embedded columns are fixedly connected to the rail sleeves by screws.

[0010] The assembly components are used to assemble glass panels in any combination.

[0011] The sliding component is used to reduce friction when installing the glass plate;

[0012] The calibration component is used to check whether the horizontal rail is installed in place.

[0013] Preferably, the assembly includes two limiting end caps, a telescopic crossbeam, several plug-in blocks, several longitudinal protrusions, several transverse protrusions, and two snap-fit ​​blocks; the longitudinal protrusions are disposed on the plug-in blocks, the transverse protrusions are disposed on the plug-in blocks, the plug-in blocks are plugged into the side rails through the longitudinal protrusions, and the two plug-in blocks can be snapped into each other.

[0014] Preferably, the plug-in block is plugged into the horizontal rail through the transverse protrusion, the two limiting end caps are respectively plugged into the plug-in blocks at both ends of the top, the telescopic beam is fixedly connected to the protrusion of the limiting end cap by screws, the two buckle blocks are respectively plugged into the connection of the three rail sleeves, and the two mutually plugged plug-in blocks are plugged into the buckle block.

[0015] Preferably, the sliding assembly includes two rotating rollers, two airbags, two triangular protrusions, two L-shaped plates, several first springs, and several convex balls; the two rotating rollers are rotatably connected to the inner walls of both sides of the side rail, and the two airbags are fixedly installed in the inner walls of both sides of the side rail, the airbags are filled with lubricating oil, and the airbags are provided with slits.

[0016] Preferably, the two L-shaped plates are slidably connected to the inner walls of the two sides of the side rail, and a number of first springs are fixedly connected to the two L-shaped plates. The two triangular protrusions are fixedly connected to the two L-shaped plates, and a number of convex balls are fixedly connected to the two L-shaped plates. The arc surface of the rotating roller is at the same level as the inner wall of the side rail.

[0017] Preferably, the calibration assembly includes two stops, two L-shaped rods, several short rods, two long rods, and several second springs. The short rods are slidably connected inside the plug-in block, and one end of each of the second springs is fixedly connected to a short rod, while the other end is fixedly connected inside the plug-in block.

[0018] Preferably, the two L-shaped rods are slidably connected inside the plug-in block, one end of the L-shaped rod is slidably connected inside the transverse protrusion, the two long rods are fixedly connected to the two L-shaped rods respectively, the long rods are slidably connected inside the longitudinal protrusion, and the two stops are fixedly connected to the inner walls on both sides of the side rail respectively.

[0019] Preferably, the side rail is provided with an aluminum tube assembly, which is fixedly connected to three side rails near the telescopic crossbeam. The four cross rails located at the buckle blocks are spliced ​​in pairs, and the two interlocking plugs can be inserted into the two spliced ​​cross rails.

[0020] The present invention has the following beneficial effects:

[0021] 1. By assembling the components, three rail sleeves are spliced ​​together using two snap-fit ​​blocks. Then, the embedded column is fixed in the wall to secure the rail sleeves. Insert plug-in blocks at both ends of the horizontal rail, and then insert the side rails into the plug-in blocks at both ends. Slide the glass panel through the side rails into the bottom horizontal rail. Then, splice the two horizontal rails together, inserting two plug-in blocks at each end. After assembly, insert the horizontal rails above the glass panel, and connect the plug-in blocks into the side rails to complete the assembly of the bottom layer of glass and its frame. The bottom layer of glass and its frame is then slid into the rail sleeves via the side rails. The second and first layers of glass and their frames are then installed in the same way. After the top layer is installed, insert two limiting end caps into the plug-in blocks at both ends, and then insert the telescopic beam into the protrusions on the limiting end caps. Finally, fix it with screws. This allows for the modular assembly of multiple layers of glass panels and their corresponding frames. At the same time, the two plug-in blocks can be flexibly interlocked to achieve splicing of any length and combination of any position for the horizontal and side rails.

[0022] Second, through the sliding assembly, when the glass plate slides down the side rail, it can squeeze the inclined surface of the triangular protrusion, causing it to drive the L-shaped plate to slide inward. At the same time, the convex ball squeezes the airbag, causing the crack on the airbag to burst open, and the lubricating oil flows to the rotating roller. As the glass plate descends, the rotating roller contacts the glass plate and rotates with it, so that the lubricating oil adheres to the side of the glass plate. This reduces the sliding resistance when the glass plate continues to slide down, and avoids the glass plate directly rubbing against the inner wall of the side rail, which would cause scratches or jamming and affect the assembly.

[0023] 3. Using the calibration component, press the long rod to slide the L-shaped rod into the insertion block, causing one end of the L-shaped rod to retract from the outside of the horizontal protrusion to the inside. Splice one end of the horizontal rail onto the horizontal protrusion, and repeat the above operation on the other end of the insertion block. Then, when the horizontal rail is connected above the glass plate, if the horizontal rail is not properly spliced ​​when the longitudinal protrusions on both ends of the insertion blocks are inserted into the side rail, the L-shaped rod will extend the long rod under the action of the spring. At this time, after the L-shaped rod contacts the stop block, the second spring will slightly lift the insertion block through its elastic force, indicating that there is a gap between the inside of the horizontal rail and the horizontal protrusion. This reminds the installer that the horizontal rail and the insertion block are not fully fitted together and need to be readjusted to eliminate the gap between them, so as to avoid the overall frame becoming loose or crooked after subsequent assembly. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the assembly structure of a glass shower wall proposed in this invention;

[0025] Figure 2 for Figure 1 Enlarged diagram of point A in the diagram;

[0026] Figure 3 for Figure 1 Enlarged diagram of point B in the diagram;

[0027] Figure 4 This is a partial schematic diagram of the assembly structure of a glass shower wall proposed in this invention, near the end of the telescopic beam.

[0028] Figure 5 This is a partial exploded view of the assembly structure components of a glass shower wall proposed in this invention, including the horizontal rail, telescopic beam, and limiting end cap.

[0029] Figure 6 This is an exploded view of the assembly structure of the glass shower wall proposed in this invention, showing the interlocking block and side rail.

[0030] Figure 7 This is a cross-sectional view of the inner wall of the side rail of the assembly structure of a glass shower wall proposed in this invention.

[0031] Figure 8 This is a schematic diagram of the connection structure of the horizontal rail, plug-in block, and snap-fit ​​block of the assembly structure of the glass shower wall proposed in this invention.

[0032] Figure 9 This is a partial exploded view of the assembly structure of a glass shower wall proposed in this invention, including components such as side rails and plug-in blocks.

[0033] Figure 10 The image shows an exploded view of the snap-fit ​​block and two plug-in blocks of the assembly structure of a glass shower wall proposed in this invention.

[0034] Figure 11 This is a diagram illustrating the assembly structure of a glass shower wall proposed in this invention, showing the interlocking of two snap-fit ​​blocks.

[0035] Figure 12 This is a schematic diagram of the connection structure between the aluminum tube and a single side rail in the assembly structure of a glass shower wall proposed in this invention.

[0036] Figure 13 The exploded view shows the two snap-fit ​​blocks and two spliced ​​horizontal rails of the assembly structure of the glass shower wall proposed in this invention.

[0037] Figure 14 This is a partial cross-sectional schematic diagram of the side rail of the assembly structure of a glass shower wall proposed in this invention.

[0038] Figure 15 This is a schematic cross-sectional view of one side of the snap-fit ​​block of the assembly structure of a glass shower wall proposed in this invention.

[0039] In the diagram: 1. Glass plate; 2. Horizontal rail; 3. Telescopic beam; 4. Rail sleeve; 5. Side rail; 6. Embedded column; 7. Limiting end cap; 8. Insert block; 9. Short rod; 10. Horizontal protrusion; 11. Longitudinal protrusion; 12. Rotating roller; 13. Triangular protrusion; 14. First spring; 15. L-shaped plate; 16. Convex ball; 17. Airbag; 18. Buckle block; 19. Aluminum tube assembly; 20. L-shaped rod; 21. Stop block; 22. Second spring; 23. Long rod. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] Example 1:

[0042] Reference Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figures 8 to 13 An assembly structure for a glass shower wall includes three glass panels 1, several horizontal rails 2, several side rails 5, three rail sleeves 4, assembly components, several sliding components, and several calibration components. The glass panels 1 serve as the main body of the shower wall enclosure, used to divide the shower space. The horizontal rails 2 provide support for the glass panels 1 and enable them to be spliced ​​and extended. The side rails 5 provide longitudinal sliding guidance and clamping positioning for the glass panels 1. The rail sleeves 4 are fitted on the outside of the side rails 5 to achieve vertical positioning and connection with the wall.

[0043] Three glass panels 1 slide on several horizontal rails 2 respectively. Two horizontal rails 2 can be spliced ​​together to realize the installation of the upper and lower glass panels 1. The three glass panels 1 slide longitudinally on several side rails 5 respectively. Several embedded columns 6 are provided on one side of the glass panel 1. The embedded columns 6 are used to cooperate with the wall to achieve the overall structural positioning. Three rail sleeves 4 are slidably connected to three side rails 5 on the side near the embedded columns 6 respectively. The embedded columns 6 are fixedly connected to the rail sleeves 4 by screws.

[0044] Assembly components are used to assemble glass panels 1 in any combination;

[0045] The sliding assembly is used to reduce friction when installing glass plate 1;

[0046] The calibration component is used to check whether the horizontal rail 2 is installed in place.

[0047] The assembly includes two limiting end caps 7, a telescopic crossbeam 3, several plug-in blocks 8, several longitudinal protrusions 11, several transverse protrusions 10, and two snap-fit ​​blocks 18. The limiting end caps 7 are used to limit the end of the top plug-in blocks 8 and provide installation fixing points for the telescopic crossbeam 3. The telescopic crossbeam 3 is used to form an external support structure for installing the door body. The plug-in blocks 8 are used to realize the transition and splicing between the horizontal rail 2 and the side rail 5. The longitudinal protrusions 11 are used to form a plug-in fit with the side rail 5. The transverse protrusions 10 are used to form a plug-in fit with the horizontal rail 2. The snap-fit ​​blocks 18 are used to lock the splicing part of the rail sleeve 4 and install the plug-in blocks 8. The longitudinal protrusions 11 are provided on the plug-in blocks 8, and the transverse protrusions 10 are provided on the plug-in blocks 8. The plug-in blocks 8 are plugged into the side rail 5 through the longitudinal protrusions 11. The two plug-in blocks 8 can be snapped into each other, thereby realizing the installation of the upper and lower side rails 5.

[0048] The plug-in block 8 is plugged into the horizontal rail 2 through the transverse protrusion 10. The two limiting end caps 7 are respectively plugged into the plug-in blocks 8 at both ends of the top. The telescopic beam 3 is fixedly connected to the protruding part of the limiting end cap 7 by screws. The two buckle blocks 18 are respectively plugged into the connection of the three rail sleeves 4. The two plug-in blocks 8 that are plugged into each other are plugged into the buckle block 18.

[0049] In this embodiment, three track sleeves 4 are spliced ​​together using two snap-fit ​​blocks 18. Then, the embedded column 6 is fixed to the wall to secure the track sleeves 4. Inserting connectors 8 into both ends of the horizontal track 2, and then inserting the side tracks 5 into the connectors 8 at both ends, the glass panel 1 slides into the bottom horizontal track 2 via the side tracks 5. The two horizontal tracks 2 are then spliced ​​together, with two pre-connected connectors 8 inserted into each end. After assembly, the horizontal track 2 is inserted above the glass panel 1, and the connectors 8 are connected to the side tracks 5, completing the bottom layer of glass and its frame. The frame is assembled and slidably connected to the rail sleeve 4 via the side rail 5. The second and first layers of glass and their frames are then installed in the same manner. After the top layer is installed, the two limiting end caps 7 are inserted into the two end plug blocks 8 respectively. Then, the telescopic beam 3 is inserted into the protrusion on the limiting end cap 7 and finally fixed with screws. In this way, the multi-layer glass panel 1 and the corresponding frame can be modularly assembled layer by layer. At the same time, the two plug blocks 8 can be flexibly interlocked with each other to realize the splicing of the horizontal rail 2 and the side rail 5 at any length and the combination of any position.

[0050] The side rail 5 is equipped with an aluminum tube assembly 19, which is welded together from two short tubes and one long tube. The aluminum tube assembly 19 is used to enhance the structural strength and rigidity of the side rail 5 and prevent deformation after long-term use. The aluminum tube assembly 19 is fixedly connected to the three side rails 5 near the telescopic crossbeam 3. The four cross rails 2 located at the buckle block 18 are spliced ​​in pairs to adapt to different assembly width requirements and achieve flexible adjustment of the lateral dimensions. The two interlocking plug blocks 8 can be inserted into the two spliced ​​cross rails 2 to position and lock the spliced ​​cross rails 2, ensuring a firm connection at the splice and preventing loosening and misalignment.

[0051] It should be noted that the horizontal rails 2 at the top and bottom are single pieces, while the rest are spliced ​​in pairs; the plug blocks 8 at the top and bottom are single pieces, while the rest are spliced ​​in pairs.

[0052] Example 2:

[0053] Unlike Example 1, referring to Figure 6 and Figure 7 This embodiment also has the following further features:

[0054] The sliding assembly includes two rotating rollers 12, two airbags 17, two triangular protrusions 13, two L-shaped plates 15, several first springs 14, and several convex balls 16. The rotating rollers 12 are used to convert the sliding friction between the glass plate 1 and the side rail 5 into rolling friction to reduce resistance. The airbags 17 are used to store lubricating oil, and the slits are used to open and release lubricating oil when under pressure. The triangular protrusions 13 are used to receive the squeezing force of the glass plate 1 to drive the L-shaped plates 15 to move. The L-shaped plates 15 are used to drive the convex balls 16 to move and squeeze the airbags 17. The first springs 14 are used to provide a restoring force for the L-shaped plates 15. The convex balls 16 are used to squeeze the airbags 17 to open the slits and release oil. The two rotating rollers 12 are rotatably connected to the inner walls of both sides of the side rail 5. The two airbags 17 are fixedly installed in the inner walls of both sides of the side rail 5. The airbags 17 contain lubricating oil and have slits.

[0055] Two L-shaped plates 15 are slidably connected to the inner walls of the side rails 5 on both sides. Several first springs 14 are fixedly connected to the two L-shaped plates 15 on both sides. Two triangular protrusions 13 are fixedly connected to the two L-shaped plates 15 on both sides. Several protruding balls 16 are fixedly connected to the two L-shaped plates 15 on both sides. The arc surface of the rotating roller 12 is at the same level as the inner wall of the side rails 5. This arrangement is used to ensure that the glass plate 1 smoothly contacts the rotating roller 12 when sliding, so that the lubricating oil is evenly applied.

[0056] In this embodiment, when the glass plate 1 slides downward along the side rail 5, it can squeeze the inclined surface of the triangular protrusion 13, causing it to drive the L-shaped plate 15 to slide inward. At the same time, the convex ball 16 squeezes the airbag 17, causing the crack on the airbag 17 to burst open, and the lubricating oil flows into the rotating roller 12. As the glass plate 1 descends, the rotating roller 12 contacts the glass plate 1 and rotates accordingly, so that the lubricating oil adheres to the side of the glass plate 1. This reduces the sliding resistance when the glass plate 1 continues to slide downward, and avoids direct hard friction between the glass plate 1 and the inner wall of the side rail 5, which could cause scratches or jamming that would affect the assembly.

[0057] Example 3:

[0058] Reference Figures 13 to 15 Compared to Embodiment 1 and Embodiment 2, in this embodiment:

[0059] The calibration assembly includes two stops 21, two L-shaped rods 20, several short rods 9, two long rods 23, and several second springs 22. The stops 21 are used to cooperate with the long rods 23 to achieve mechanical triggering. The L-shaped rods 20 are used to control the insertion and positioning state of the horizontal rail 2. The short rods 9 are used to provide feedback on whether the insertion is in place. The long rods 23 are used to transmit the pushing force of the stops 21 and drive the L-shaped rods 20 to move. The second springs 22 are used to provide reset and supporting forces for the short rods 9 and L-shaped rods 20. Several short rods 9 are slidably connected inside the insertion block 8. One end of several second springs 22 is fixedly connected to the short rods 9, and the other end is fixedly connected inside the insertion block 8.

[0060] Two L-shaped rods 20 are slidably connected inside the insertion block 8. One end of the L-shaped rod 20 is slidably connected inside the transverse protrusion 10 to achieve tightness and looseness inside the transverse rail 2. Two long rods 23 are fixedly connected to the two L-shaped rods 20 respectively. The long rods 23 are slidably connected inside the longitudinal protrusion 11 to be pushed by the stop block 21 when the side rail 5 is inserted. The two stop blocks 21 are fixedly connected to the inner walls on both sides of the side rail 5 to abut against the long rods 23 to achieve linkage when the longitudinal protrusion 11 is inserted into place.

[0061] In this embodiment, pressing the long rod 23 causes the L-shaped rod 20 to slide into the insertion block 8, causing one end of the L-shaped rod 20 to retract from the outside of the transverse protrusion 10 to the inside, splicing one end of the horizontal rail 2 onto the transverse protrusion 10. The other end of the insertion block 8 repeats the above operation. Subsequently, when the horizontal rail 2 is connected above the glass plate 1, if the longitudinal protrusion 11 on both ends of the insertion block 8 is inserted into the side rail 5, and the horizontal rail 2 is not spliced ​​in place, the L-shaped rod 20 will drive the long rod 23 to extend under the action of the spring. At this time, after the L-shaped rod 20 contacts the stop block 21, the second spring 22 will slightly lift the insertion block 8 through elastic force, indicating that there is a gap between the inside of the horizontal rail 2 and the transverse protrusion 10. This reminds the installer that the horizontal rail 2 and the insertion block 8 have not been fully fitted together and need to be readjusted to eliminate the gap between them, so as to avoid the overall frame becoming loose or skewed after subsequent assembly.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An assembly structure for a glass shower wall, characterized in that, It includes three glass plates (1), several horizontal rails (2), several side rails (5), three rail sleeves (4), assembly components, several sliding components, and several calibration components; The three glass plates (1) are respectively set on several horizontal rails (2), and two horizontal rails (2) can be spliced ​​together. The three glass plates (1) slide longitudinally on several side rails (5). Several embedded columns (6) are provided on one side of the glass plate (1). The three rail sleeves (4) are respectively slidably connected to the three side rails (5) on the side close to the embedded column (6). The embedded column (6) is fixedly connected to the rail sleeve (4) by screws. The assembly components are used to assemble glass panels (1) in any combination. The sliding assembly is used to reduce friction when installing the glass plate (1); The calibration component is used to check whether the horizontal rail (2) is installed in place.

2. The assembly structure of a glass shower wall according to claim 1, characterized in that, The assembly includes two limiting end caps (7), a telescopic crossbeam (3), several plug-in blocks (8), several longitudinal protrusions (11), several transverse protrusions (10), and two snap-fit ​​blocks (18); the longitudinal protrusions (11) are provided on the plug-in blocks (8), the transverse protrusions (10) are provided on the plug-in blocks (8), the plug-in blocks (8) are plugged into the side rails (5) through the longitudinal protrusions (11), and the two plug-in blocks (8) can be snapped into each other.

3. The assembly structure of a glass shower wall according to claim 2, characterized in that, The plug-in block (8) is plugged into the horizontal rail (2) through the transverse protrusion (10). The two limiting end caps (7) are respectively plugged into the plug-in blocks (8) at both ends of the top. The telescopic beam (3) is fixedly connected to the protruding part of the limiting end cap (7) by screws. The two buckle blocks (18) are respectively plugged into the connection of the three rail sleeves (4). The two plug-in blocks (8) that are plugged into each other are plugged into the buckle block (18).

4. The assembly structure of a glass shower wall according to claim 2, characterized in that, The sliding assembly includes two rotating rollers (12), two airbags (17), two triangular protrusions (13), two L-shaped plates (15), several first springs (14), and several convex balls (16); the two rotating rollers (12) are rotatably connected to the inner walls of the two sides of the side rail (5), and the two airbags (17) are fixedly installed in the inner walls of the two sides of the side rail (5). The airbags (17) are filled with lubricating oil and have slits.

5. The assembly structure of a glass shower wall according to claim 4, characterized in that, The two L-shaped plates (15) are slidably connected to the inner walls of the two sides of the side rail (5). Several first springs (14) are fixedly connected to the two L-shaped plates (15). Several first springs (14) are fixedly connected to the inner walls of the two sides of the side rail (5). Two triangular protrusions (13) are fixedly connected to the two L-shaped plates (15). Several protruding balls (16) are fixedly connected to the two L-shaped plates (15). The arc surface of the rotating roller (12) is at the same level as the inner wall of the side rail (5).

6. The assembly structure of a glass shower wall according to claim 2, characterized in that, The calibration assembly includes two stops (21), two L-shaped rods (20), several short rods (9), two long rods (23), and several second springs (22). Several short rods (9) are slidably connected inside the plug-in block (8), and one end of several second springs (22) is fixedly connected to the short rods (9), and the other end is fixedly connected inside the plug-in block (8).

7. The assembly structure of a glass shower wall according to claim 6, characterized in that, The two L-shaped rods (20) are slidably connected inside the plug block (8). One end of the L-shaped rod (20) is slidably connected inside the transverse protrusion (10). The two long rods (23) are fixedly connected to the two L-shaped rods (20) respectively. The long rods (23) are slidably connected inside the longitudinal protrusion (11). The two stops (21) are fixedly connected to the inner walls on both sides of the side rail (5).

8. The assembly structure of a glass shower wall according to claim 2, characterized in that, The side rail (5) is provided with an aluminum tube assembly (19), which is fixedly connected to three side rails (5) near the telescopic beam (3). The four horizontal rails (2) located at the buckle block (18) are spliced ​​in pairs, and the two interlocking plugs (8) can be inserted into the two interlocking horizontal rails (2).

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