Sliding door assembly and furniture applying same

Abstract

A sliding door assembly and furniture applying the same are characterized in that the sliding door assembly comprises at least one tensioning mechanism, each tensioning mechanism comprises a fixing seat, a connecting block and an adjusting screw, the fixing seats are fixedly connected to a door plate or a balancing weight, each fixing seat is provided with an installation cavity, each installation cavity is provided with an upper opening, and the bottom wall of each fixing seat is provided with a bottom wall through hole; the connecting block is provided with a tooth groove capable of being matched with belt teeth of the synchronous belt, the connecting block and the synchronous belt are combined together through the tooth groove and the belt teeth and placed in the installation cavity, an adjusting gap is reserved between the connecting block and the bottom wall of the fixing base, and the adjusting screw penetrates through a through hole in the bottom wall from bottom to top and is connected to the connecting block. And the size of the adjusting gap can be adjusted by adjusting the adjusting screw, so that the synchronous belt is kept in a tensioning state. The furniture comprises a cabinet body, and the synchronizing shaft of the sliding door assembly is rotatably connected to the cabinet body.

Description

Technical Field

[0001] This invention relates to the field of furniture-related technology, and in particular to a sliding door assembly and furniture in which it is applied. Background Technology

[0002] Cabinet doors are an important component of furniture. Based on their opening method, common cabinet doors are divided into rotating hinged doors and sliding doors. Sliding doors typically slide horizontally along a set track, without occupying external space, making them suitable for small spaces or situations where the door needs to be concealed. Besides the common left-right sliding, sliding doors can also slide up and down. However, due to the weight of the door, lifting it upwards requires considerable force, while pulling it down requires less. If the track's resistance is insufficient, the door may even slide down automatically under its own weight. To ensure stable vertical movement of cabinet doors, improvements have been made. For example, Chinese utility model patent CN220494685U discloses a counterweight structure for a glass counter, including a counter body. The upper surface of the counter body has a glass door placement groove. The surface of the glass door placement groove contacts the surface of a glass door fixing frame. The upper surface of the glass door fixing frame is fixedly connected to the lower surface of a lifting ring. The surface of the lifting ring contacts the surface of a traction rope. The surface of the traction rope is rotatably connected to the surface of a first pulley. The first pulley is fixedly connected to the surface of a rotating shaft. The surface of the traction rope is rotatably connected to the surface of a second pulley. The surface of the counterweight block is slidably connected to the surface of a counterweight block groove. By connecting a counterweight block to the glass door to balance its weight, not only is the force required to lift the glass door reduced, ensuring smooth lifting and lowering, but the problem of the glass door automatically sliding down is also reduced. However, due to the large width of the cabinet door in the left-right direction, multiple index ropes are usually connected. Adjusting the connection length and tension of each traction rope to ensure synchronous translation of the left and right ends of the cabinet door is very cumbersome. Summary of the Invention

[0003] To overcome at least one of the aforementioned problems in the existing technology and further improve the stability of the cabinet door during vertical movement, this invention proposes a sliding door assembly, including a door panel, a counterweight, and a synchronous shaft. The door panel and the counterweight are respectively arranged on both sides of the synchronous shaft. The assembly also includes at least two sets of pulleys and a synchronous belt respectively connected to both ends of the synchronous shaft. The pulleys are capable of rotating synchronously with the synchronous shaft. The synchronous belt passes around the pulleys, and both ends of the synchronous belt are respectively connected to the door panel and the counterweight. The invention is characterized by further including at least one tensioning mechanism, which includes a fixed base, a connecting block, and a... The mounting base is fixedly connected to the door panel or counterweight block, and an upward-facing mounting cavity is provided on the mounting base. A bottom wall through hole is provided on the bottom wall of the mounting base. A toothed groove is provided on the connecting block, which can engage with the teeth of the timing belt. The connecting block and the timing belt are joined together by the toothed groove and are placed in the mounting cavity. An adjustment gap is left between the connecting block and the bottom wall of the mounting base. The adjustment screw passes through the bottom wall through hole from bottom to top and is connected to the connecting block. The size of the adjustment gap can be adjusted by adjusting the adjustment screw, thereby keeping the timing belt in a taut state.

[0004] The door panel is a plate-shaped component that can move up and down when lifted or pulled down, and the door panel is used to cover the opening on the cabinet mentioned below.

[0005] The counterweight is a component connected to the door panel and having a weight equivalent to that of the door panel. It is connected to the door panel by means of the pulley and timing belt or the pulley and cable mentioned below, and applies an upward force to the door panel. This upward force can counteract at least part of the weight of the door panel.

[0006] The synchronous shaft is a shaft-shaped component that can rotate relative to a fixed base (such as the cabinet of the furniture mentioned below). The synchronous shaft has two functions: first, it connects to the pulley and can rotate together with the pulley, so that as long as the pulley at one end rotates, the other pulleys can be driven to rotate through the synchronous shaft; second, the synchronous shaft can simultaneously suspend the door panel and the counterweight through the synchronous belt, which means that the synchronous shaft has good structural strength.

[0007] The pulley is a wheel-shaped component with teeth, and the synchronous belt is a belt-shaped component with teeth. The pulley teeth can mesh with the teeth of the synchronous belt to form a gear transmission.

[0008] The tensioning mechanism is a connecting adjustment mechanism connected to the end of the synchronous belt. It has at least two functions: first, to connect the synchronous belt to the door panel and / or counterweight; and second, to adjust the position of the connecting end of the synchronous belt to adjust the tension of the synchronous belt and the flatness of the door panel.

[0009] The mounting base includes a side wall and a bottom wall. The side wall forms an upward-opening mounting cavity. The width of the mounting cavity is greater than the total thickness of the fully engaged connecting block and the timing belt, but less than the sum of their individual thicknesses. This allows the engaged connecting block and timing belt to enter the mounting cavity and prevents them from easily separating within it. Of course, to ensure that the connecting block and timing belt remain engaged within the mounting cavity and can withstand the tension of the door panel or counterweight, the width of the mounting cavity is generally set slightly greater than the total thickness of the fully engaged connecting block and timing belt.

[0010] The connection block and the bottom wall of the fixed base have an adjustment gap, which means that the connection block has a certain space to move after being placed in the mounting cavity. The connection block can be adjusted up and down by the adjustment screw. Since the connection block is engaged with the timing belt, the timing belt can also be tightened or loosened.

[0011] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present invention are as follows: First, by setting the tensioning mechanism, the synchronous belt can be wound around the pulley in a tensioned state, and the teeth of the synchronous belt and the teeth on the pulley form a full mesh, ensuring the transmission stability and reliability of both; Second, by adjusting the adjusting screw of the tensioning mechanism, the left and right height of the door panel can also be adjusted, so that the door panel remains flat and aesthetically pleasing; Third, the connecting block and the synchronous belt are combined together by the tooth groove and the belt teeth and placed in the mounting cavity, and then the connecting block is connected to the fixed seat by the adjusting screw, which not only allows the synchronous belt to be conveniently and stably installed on the fixed seat, but also has a certain adjustment capability, greatly reducing the installation accuracy of the components and improving the installation efficiency.

[0012] To further improve the connection stability between the timing belt and the mounting base, it can be fixed in the following two ways.

[0013] In the first embodiment, the side wall of the fixing seat facing the door panel or counterweight is provided with a side opening. The width of the side opening is greater than that of the timing belt and is connected to the upper opening. The width of the mounting cavity is less than the total thickness of the connecting block and the timing belt combined together. When the connecting block and the timing belt are combined and placed in the mounting cavity, at least part of the connecting block or timing belt protrudes from the side opening to one side of the fixing seat. Thus, when the fixing seat is fixedly connected to the door panel or counterweight, the fixing seat presses the connecting block and the timing belt tightly onto the door panel or counterweight.

[0014] The second type includes a movable pressure block in the mounting cavity. The movable pressure block includes a pressure plate and a pressure foot on the pressure plate. The side wall of the fixed seat facing the door panel or counterweight is also provided with a side wall through hole. The pressure foot passes through the side wall through hole and extends to the outside. When the fixed seat is fixedly connected to the door panel or counterweight, the door panel or counterweight squeezes the pressure foot, thereby pressing the pressure plate of the movable pressure block tightly onto the connecting block and the timing belt.

[0015] The stability of the connection between the synchronous belt and the pulley affects the smoothness of the door panel's lifting and lowering. To ensure smooth lifting and lowering of the door panel, a further technical solution could include an anti-detachment mechanism. This mechanism includes a wheel seat and a pressure wheel rotatably mounted on the wheel seat. The pressure wheel is positioned circumferentially outside the pulley, and the distance between the pressure wheel and the pulley teeth is less than the thickness of the synchronous belt but sufficient to allow the synchronous belt meshing with the pulley to pass through. This prevents the synchronous belt meshing with the pulley from easily disengaging during back-and-forth movement. Furthermore, to further improve stability, the pressure wheel can also press against the synchronous belt, allowing the teeth of the synchronous belt to form a tight and stable connection with the teeth of the pulley.

[0016] Since some of the door panels and counterweights are quite heavy, relying solely on the timing belt as a connecting component poses a certain risk. To improve connection stability, a further technical solution could include pulleys and cables. The pulleys are connected to the timing shaft, and the cables pass around the pulleys, with both ends of the cables connected to the door panel and the counterweight, respectively. The pulleys and cables are arranged between two sets of timing belts and pulleys.

[0017] When the door panel moves up and down, it may wobble. A further technical solution could be to include a guiding mechanism. This guiding mechanism includes at least one set of guide rails and guide wheels, which are respectively arranged on the door panel and the fixed base. The guide rails are vertically arranged, and the guide wheels are rotatably mounted within them. At least one guide sidewall of the guide rail and the outer wall of the guide wheel form an interference fit. This guiding mechanism allows the door panel to move along a designated path when moving up and down, reducing the problem of the door panel wobbling back and forth and greatly improving the stability when opening and closing the door.

[0018] A further technical solution is to provide a V-shaped guide groove on the guide sidewall of at least one of the guide rails, and at least part of the outer wheel wall of the guide wheel, which is rolled in the guide rail, falls into the V-shaped guide groove. By providing the V-shaped guide groove, the swaying of the door panel in the left and right directions can be effectively limited, further improving the stability of the door panel's movement.

[0019] A further technical solution could be that, when the guide wheel is arranged on the door panel, a wheel seat is also provided on the door panel. The wheel seat is L-shaped and includes a flat plate and a vertical plate. The flat plate is connected to the back of the door panel, and the vertical plate is arranged vertically on the door panel and spaced apart from the guide rail. The guide wheel is rotatably connected to the vertical plate.

[0020] Because of the above advantages, the sliding door assembly can also be applied to furniture, which includes a cabinet and the sliding door assembly, wherein the synchronous shaft of the sliding door assembly is rotatably connected to the cabinet.

[0021] Because of the above-mentioned features and advantages, this invention can be applied to sliding door assemblies and furniture in which they are used. Attached Figure Description

[0022] Figure 1 This is a frontal view structural diagram of the furniture using the technical solution of this invention; Figure 2 This is a schematic diagram of the exploded structure of the furniture; Figure 3 yes Figure 2 A magnified schematic diagram of the structure at point M in the middle; Figure 4 This is a schematic diagram of the axial structure of the sliding door assembly; Figure 5 This is an exploded structural diagram of the sliding door assembly; Figure 6 This is a rear-view structural diagram of the sliding door assembly; Figure 7 yes Figure 1Schematic diagram of the cross-sectional structure along the AA direction; Figure 8 yes Figure 7 A magnified schematic diagram of the structure at point K in the middle; Figure 9 This is an exploded structural diagram of the tensioning mechanism; Figure 10 This is a cross-sectional schematic diagram of the tensioning mechanism, showing another connection structure. Detailed Implementation

[0023] The sliding door assembly using the technical solution of the present invention and the furniture using the sliding door assembly will be further described below with reference to the accompanying drawings.

[0024] Except where explicitly stated that they are equivalent or alternative implementation schemes, the various implementation details disclosed below may be selectively applied or combined in one embodiment even if they are not directly related or synergistic in terms of function.

[0025] like Figures 1-3 As shown, the overall structure of the furniture includes a cabinet 1, which includes a left upright panel 11, a right upright panel 12, an upper shelf 13, a lower shelf 14, and a back panel 15. The back panel 15 is connected to the rear ends of the left upright panel 11, the right upright panel 12, the upper shelf 13, and the lower shelf 14. The left upright panel 11, the right upright panel 12, the upper shelf 13, the lower shelf 14, and the back panel 15 together form a cabinet cavity 10 with a front opening. In order to cover the front opening, a sliding door assembly 2 is also included on the front side of the cabinet 1.

[0026] The sliding door assembly 2 will be described in detail below, such as Figures 3-8As shown, the sliding door assembly 2 includes a door panel 21, a counterweight 22, and a synchronous shaft 23. The lower ends of the left upright plate 11 and the right upright plate 12 extend downwards beyond the lower layer plate 14. Connection holes are provided on the inner walls of the left upright plate 11 and the right upright plate 12. The synchronous shaft 23 is rotatably connected to the connection holes of the left upright plate 11 and the right upright plate 12. The door panel 21 and the counterweight 22 are respectively arranged on the front and rear sides of the synchronous shaft 23. To support the door panel 21 and the counterweight 22 and allow them to move up and down, at least two sets of pulleys 3 and synchronous belts 4 are respectively connected to both ends of the synchronous shaft 23. The pulleys 3 can rotate synchronously with the synchronous shaft 23, and the synchronous belt 4 passes around the pulleys 3, with both ends of the synchronous belt 4 connected to the door panel 21 and the counterweight 22 respectively. The pulley 3 has teeth 31 on its circumference, and the synchronous belt 4 has teeth 41. The teeth 31 on the pulley 3 can mesh with the teeth 41 of the synchronous belt 4 to form a synchronous belt drive. In this embodiment, the lower end of the door panel 21 also extends downward beyond the lower plate 14. One end of the synchronous belt 4 is connected to the lower end of the door panel 21. When the left or right end of the door panel 21 is lifted or pressed down, the door panel 21 first drives the pulley 3 at that end to rotate through the synchronous belt 4. The pulley 3 then drives the synchronous shaft 23 to rotate. Since the synchronous shaft 23 and all the pulleys 3 connected to it rotate synchronously, the pulley 3 at the other end will move with the corresponding synchronous belt 4. That is, the other end of the door panel 21 will also move synchronously under the action of the synchronous belt 4. This transmission process is fast, making the rise of the door panel 21 present an overall stable state.

[0027] Because there is an error in the length and tooth position of the synchronous belt during shearing, at least one tensioning mechanism 5 is included to facilitate adjustment of the connection length and tension of the synchronous belt 4. The tensioning mechanism 5 includes a fixed base 51, a connecting block 52, and an adjusting screw 53. The fixed base 51 is fixedly connected to the door panel 21 or the counterweight block 22. In this embodiment, the fixed base 51 is fixedly connected to the lower end of the door panel 21. The fixed base 51 includes a fixed base side wall 511 and a fixed base bottom wall 512. The fixed base side wall 511 forms a mounting cavity 50 around the fixed base. The mounting cavity 50 has an upper... The fixed base 51 has an opening, and the bottom wall of the fixed base 51 has a bottom wall through hole 510. The connecting block 52 has a toothed groove 521 that can cooperate with the teeth 41 of the timing belt 4. The connecting block 52 and the timing belt 4 are connected together through the toothed groove 521 and the teeth 41 and placed in the mounting cavity 50. The bottom wall of the fixed base 51 has an adjustment gap L. The adjusting screw 53 passes through the bottom wall through hole 510 from bottom to top and is connected to the connecting block 52. The size of the adjustment gap L can be adjusted by adjusting the adjusting screw 53, thereby keeping the timing belt 4 in a taut state. The advantage of setting up the tensioning mechanism 5 is that it allows the synchronous belt 4 to be wound around the pulley 3 in a tensioned state. The teeth 41 of the synchronous belt 4 and the teeth 31 on the pulley 3 fully mesh, ensuring the transmission stability and reliability of both. By adjusting the adjusting screw 53 of the tensioning mechanism 5, the left and right height of the door panel 21 can also be adjusted, keeping the door panel 21 flat and aesthetically pleasing. In addition, the connecting block 52 and the synchronous belt 4 are connected together by the tooth groove 521 and the teeth 41 and placed in the mounting cavity 50. Then, the connecting block 52 is connected to the fixing seat 51 by the adjusting screw 53. This not only allows the synchronous belt 4 to be installed on the fixing seat 51 conveniently and securely, but also has a certain degree of adjustability, greatly reducing the installation accuracy of the tensioning mechanism 5 and improving the installation efficiency.

[0028] After the connecting block 52 and the timing belt 4 are placed into the mounting cavity 50, although they can be joined together by the toothed groove 521 and the belt teeth 41, a certain gap needs to be left during installation. When connecting the door panel 21 and the counterweight block 22, which have a relatively large weight, the timing belt 4 may loosen due to its own deformation. In order to improve the connection stability between the timing belt 4 and the fixing seat 51, it can be further fixed in the following two ways.

[0029] The first type, such as Figure 8As shown, the fixing base 51 has a side opening on the side wall facing the door panel 21 or the counterweight 22. The width of the side opening is greater than that of the timing belt 4 and it communicates with the upper opening. The width of the mounting cavity 50 is less than the total thickness of the connecting block 52 and the timing belt 4 combined together. When the connecting block 52 and the timing belt 4 are combined and placed in the mounting cavity 50, at least part of the connecting block 52 or the timing belt 4 protrudes from the side opening to one side of the fixing base 51. Thus, when the fixing base 51 is fixedly connected to the door panel 21 or the counterweight 22, the fixing base 51 presses the connecting block 52 and the timing belt 4 onto the door panel 21 or the counterweight 22. In actual installation, the fixing seat 51 is usually connected to the door panel 21 or counterweight 22 using fastening screws. However, the fastening screws are not fully tightened, leaving a certain gap between the fixing seat 51 and the door panel 21 or counterweight 22. This allows the connecting block 52 and the timing belt 4 to be easily placed into the mounting cavity 50. After adjusting the adjusting screw 53, the fastening screws are tightened, allowing the fixing seat 51 to press the connecting block 52 and the timing belt 4 onto the door panel 21 or counterweight 22.

[0030] The second type, such as Figure 10 As shown, a movable pressure block 9 is also provided in the mounting cavity 50. The movable pressure block 9 includes a pressure plate 91 and a pressure foot 92 provided on the pressure plate 91. The side wall of the fixed seat 51 facing the door panel 21 or the counterweight 22 is also provided with a side wall through hole. The pressure foot 92 passes through the side wall through hole and extends to the outside. When the fixed seat 51 is fixedly connected to the door panel 21 or the counterweight 22, the door panel 21 or the counterweight 22 squeezes the pressure foot 92, thereby pressing the pressure plate 91 of the movable pressure block 9 onto the connecting block 52 and the timing belt 4.

[0031] The connection stability between the synchronous belt 4 and the pulley 3 affects the smoothness of the lifting and lowering of the door panel 21. To ensure the smooth lifting and lowering of the door panel 21, a further technical solution could include an anti-detachment mechanism 6. This anti-detachment mechanism includes a wheel seat 61 and a pressure wheel 62 rotatably mounted on the wheel seat 61. The pressure wheel 62 is arranged on the circumferential outer side of the pulley 3, and the distance between the pressure wheel 62 and the teeth 31 of the pulley 3 is less than the total thickness of the synchronous belt 4, but sufficient to allow the synchronous belt 4 meshing with the pulley 3 to pass through. Thus, the synchronous belt 4 meshing with the pulley 3 is less likely to detach from the pulley 3 during back-and-forth movement. Alternatively, the pressure wheel 62 can also press against the synchronous belt 4, allowing the teeth 41 of the synchronous belt 4 to form a tight and stable connection with the teeth 31 of the pulley 3. To further improve stability, a compression spring (not shown in the figure) can be installed between the wheel seat 61 and the pressure wheel 62 to press the pressure wheel 62 onto the timing belt 4.

[0032] Since some of the door panels 21 and counterweights 22 are quite heavy, relying solely on the synchronous belt 4 as a connecting component carries a certain risk of breakage. To improve connection stability, a further technical solution could include a pulley 71 and a cable 72. The pulley 71 is connected to the synchronous shaft 23, and the cable 72 passes around the pulley 71, with both ends of the cable 72 connected to the door panel 21 and the counterweight 22, respectively. The pulley 71 and cable 72 are arranged between the two sets of synchronous belts 4 and pulleys 3.

[0033] When the door panel 21 moves up and down, it may wobble. A further technical solution is to include a guiding mechanism 8. The guiding mechanism 8 includes at least one set of guide rails 81 and guide wheels 82. The guide rails 81 and guide wheels 82 are respectively arranged on the door panel 21 and the fixed base (i.e., the cabinet 1). The guide rails 81 are arranged vertically, and several guide wheels 82 are rotatably disposed in the guide rails 81. At least one guide sidewall of the guide rail 81 forms an interference fit with the outer wheel wall of the guide wheel 82. Through the guiding mechanism, the door panel 21 can move along a specified route when moving up and down, reducing the problem of the door panel 21 wobbling back and forth and greatly improving the stability when opening and closing the door.

[0034] Furthermore, a V-shaped guide groove is provided on the guide side wall of at least one of the guide rails 81, and at least part of the outer wheel wall of the guide wheel 82, which is rolled in the guide rail 81, falls in the V-shaped guide groove. By providing the V-shaped guide groove, the swaying of the door panel 21 in the left and right directions can be effectively limited, further improving the stability of the door panel 21's movement.

[0035] To facilitate the fixed connection of the guide wheel 82, when the guide wheel 82 is arranged on the door panel 21, a guide wheel seat 83 is also provided on the door panel 21. The guide wheel seat 83 is L-shaped and includes a flat plate 831 and a vertical plate 832. The flat plate 831 is connected to the back of the door panel 21, and the vertical plate 832 is arranged vertically on the door panel 21 and spaced apart from the guide rail 81. The guide wheel 82 is rotatably connected to the vertical plate 832.

Claims

1. A sliding door assembly, comprising a door panel, a counterweight, and a synchronous shaft, wherein the door panel and the counterweight are respectively arranged on both sides of the synchronous shaft, and further comprising at least two sets of pulleys and a synchronous belt respectively connected to both ends of the synchronous shaft, wherein the pulleys are capable of rotating synchronously with the synchronous shaft, and the synchronous belt passes around the pulleys and its two ends are respectively connected to the door panel and the counterweight; characterized in that, It also includes at least one tensioning mechanism, which includes a fixed base, a connecting block, and an adjusting screw. The fixed base is fixedly connected to the door panel or counterweight block. The fixed base has an installation cavity with an upper opening. The bottom wall of the fixed base has a bottom wall through hole. The connecting block has a toothed groove that can engage with the teeth of the timing belt. The connecting block and the timing belt are joined together by the toothed groove and placed in the installation cavity. An adjustment gap is left between the connecting block and the bottom wall of the fixed base. The adjusting screw passes through the bottom wall through hole from bottom to top and is connected to the connecting block. By adjusting the adjusting screw, the size of the adjustment gap can be adjusted, thereby keeping the timing belt in a taut state.

2. The sliding door assembly according to claim 1, characterized in that, The fixing seat has a side opening on the side wall facing the door panel or counterweight. The width of the side opening is greater than that of the timing belt and it communicates with the upper opening. The width of the mounting cavity is less than the total thickness of the connecting block and the timing belt when they are combined and placed in the mounting cavity. At least part of the connecting block or timing belt protrudes from the side opening to one side of the fixing seat. Thus, when the fixing seat is fixedly connected to the door panel or counterweight, the fixing seat presses the connecting block and the timing belt onto the door panel or counterweight.

3. The sliding door assembly according to claim 1, characterized in that, A movable pressure block is also provided in the mounting cavity. The movable pressure block includes a pressure plate and a pressure foot disposed on the pressure plate. A side wall through hole is also provided on the side wall of the fixed seat facing the door panel or counterweight. The pressure foot passes through the side wall through hole and extends to the outside. When the fixed seat is fixedly connected to the door panel or counterweight, the door panel or counterweight squeezes the pressure foot, thereby pressing the pressure plate of the movable pressure block tightly onto the connecting block and the timing belt.

4. The sliding door assembly according to any one of claims 1 to 3, characterized in that, It also includes an anti-derailment mechanism, which includes a wheel seat and a pressure wheel rotatably mounted on the wheel seat. The pressure wheel is arranged on the circumferential outer side of the pulley, and the distance between the pressure wheel and the teeth of the pulley is less than the thickness of the synchronous belt but allows the synchronous belt meshing with the pulley to pass through.

5. The sliding door assembly according to any one of claims 1 to 3, characterized in that, It also includes pulleys and cables. The pulleys are connected to the synchronous shaft, and the cables pass around the pulleys. The two ends of the cables are respectively connected to the door panel and the counterweight. The pulleys and cables are arranged between the two sets of synchronous belts and pulleys.

6. The sliding door assembly according to any one of claims 1 to 3, characterized in that, It also includes a guiding mechanism, which includes at least one set of guide rails and guide wheels. The guide rails and guide wheels are respectively arranged on the door panel and the fixed base. The guide rails are arranged vertically, and the guide wheels are rotatably disposed in the guide rails. At least one side guide wall of the guide rails forms an interference fit with the outer wheel wall of the guide wheels.

7. The sliding door assembly according to claim 6, characterized in that, A V-shaped guide groove is provided on the guide side wall of at least one of the guide rails, and at least part of the outer wheel wall of the guide wheel, which is rolled in the guide rail, falls in the V-shaped guide groove.

8. The sliding door assembly according to claim 6, characterized in that, When the guide wheel is arranged on the door panel, a guide wheel seat is also provided on the door panel. The guide wheel seat is L-shaped and includes a flat plate and a vertical plate. The flat plate is connected to the back of the door panel, and the vertical plate is arranged vertically on the door panel and spaced apart from the guide rail. The guide wheel is rotatably connected to the vertical plate.

9. A piece of furniture, comprising a cabinet body, characterized in that, It also includes the sliding door assembly according to any one of claims 1 to 8, wherein the synchronous shaft of the sliding door assembly is rotatably connected to the cabinet.

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