Sliding door assembly and furniture applying same

Abstract

A sliding door assembly and furniture applying the same comprise 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] The present invention relates to the technical field related to furniture, and in particular to a sliding door assembly and furniture using the same. Background Art

[0002] Cabinet doors are an important part of furniture. According to the opening method, common cabinet doors are divided into rotating flat doors and sliding doors. Among them, sliding doors generally move along the set guide rails as a whole, do not occupy the space outside the cabinet, and are suitable for small spaces or situations where the cabinet doors need to be hidden. In addition to the common left-right translation, sliding doors can also move up and down. However, due to the weight of the cabinet door, it takes a lot of force to lift the cabinet door up, while pulling the cabinet door down requires less force. If the resistance of the guide rail is insufficient, the cabinet door may automatically slide down under the action of its own weight. In order to allow the cabinet door to move up and down stably, people have made improvements to the cabinet door. For example, the Chinese utility model patent with publication number CN220494685U discloses a counter glass counterweight structure, including a counter body, a glass door placement groove is provided on the upper surface of the counter body, the surface of the glass door placement groove contacts the surface of the glass door fixing frame, the upper surface of the glass door fixing frame is fixedly connected to the lower surface of the ring, the surface of the ring contacts the surface of the traction rope, the surface of the traction rope is rotationally connected to the surface of the pulley one, the pulley one is fixedly connected to the surface of the rotating shaft, the surface of the traction rope is rotationally connected to the surface of the pulley two, and the surface of the counterweight block is slidably connected to the surface of the counterweight block slide groove. By connecting the counterweight block to the glass door to balance the weight of the glass door, it can not only reduce the effort of people when lifting the glass door, keep the glass door lifting and lowering smoothly, but also reduce the problem of the glass door automatically sliding down. However, due to the large width of the cabinet door in the left and right directions, multiple index ropes are usually connected. In order to allow the left and right ends of the cabinet door to move synchronously, the connection length and tension adjustment of each traction rope are very troublesome. Summary of the invention

[0003] In order to overcome at least one of the above-mentioned problems existing in the prior art and further improve the stability of the cabinet door when it moves up and down, the present invention proposes a sliding door assembly, including a door panel, a counterweight block and a synchronous shaft, wherein the door panel and the counterweight block are respectively arranged on both sides of the synchronous shaft, and also includes at least two groups of pulleys and synchronous belts respectively connected to the two ends of the synchronous shaft, wherein the pulley can rotate synchronously with the synchronous shaft, the synchronous belt passes around the pulley and the two ends of the synchronous belt are respectively connected to the door panel and the counterweight block; it is characterized in that it also includes at least one tensioning mechanism, wherein the tensioning mechanism includes a fixed seat, a connecting block and a and an adjusting screw, the fixing seat is fixedly connected to the door panel or the counterweight block, an installation cavity opening upward is arranged on the fixing seat, a bottom wall through hole is arranged on the bottom wall of the fixing seat, a tooth groove which can cooperate with the belt teeth of the synchronous belt is arranged on the connecting block, the connecting block and the synchronous belt are combined with the tooth groove and the belt teeth and placed in the installing cavity, an adjustment gap is left between the connecting block and the bottom wall of the fixing seat, the adjusting 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 adjusting screw, so that the synchronous belt can be kept in a tensioned state.

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

[0005] Among them, the counterweight block is a component connected to the door panel and has a weight equivalent to that of the door panel. It is connected to the door panel by means of the pulley and synchronous belt or the pulley and cable mentioned below, and applies an upward force to the door panel, which can offset at least part of the gravity of the door panel.

[0006] Among them, the synchronous shaft is an axial component that can rotate relative to a fixed base (such as the cabinet body of the furniture below). The synchronous shaft has two functions. One is to connect the pulley and be able to 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; the second is that the synchronous shaft can simultaneously lift the door panel and the counterweight block through the synchronous belt, which means that the synchronous shaft has good structural strength.

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

[0008] Among them, the tensioning mechanism is a connecting and adjusting mechanism connected to the end of the synchronous belt, which has at least two functions: one is to connect the synchronous belt to the door panel and / or counterweight block; the other is to be able 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] Wherein, the fixing seat includes a fixing seat side wall and a fixing seat bottom wall, and the fixing seat side walls are arranged around to form an installation cavity with an opening facing upward, and the width of the installation cavity is set to be greater than the total thickness of the fully meshed connecting block and the synchronous belt, but less than the sum of the thicknesses of the connecting block and the synchronous belt, so that the meshed connecting block and the synchronous belt can enter the installation cavity and are not easily separated in the installation cavity. Of course, in order to ensure that the connecting block and the synchronous belt entering the installation cavity remain meshed and can withstand the pulling force of the door panel or the counterweight block, the width of the installation cavity is generally set to be slightly greater than the total thickness of the fully meshed connecting block and the synchronous belt.

[0010] Among them, an adjustment gap is left between the connecting block and the bottom wall of the fixing seat, which means that the connecting block has a certain space for movement after being placed in the installation cavity. The connecting block can be adjusted to move up and down by the adjusting screw. Since the connecting block remains engaged with the synchronous belt, the synchronous belt will also be tightened or loosened.

[0011] According to the above technical scheme, compared with the prior art, the beneficial technical effects of the present invention are: first, by setting the tensioning mechanism, the synchronous belt can be wound around the pulley in a tensioned state, and the belt teeth of the synchronous belt and the gear teeth on the pulley form a full meshing, thereby ensuring the transmission stability and reliability of the two; second, by adjusting the adjusting screw of the tensioning mechanism, the left and right heights of the door panel can also be adjusted to keep the door panel flat and beautiful as a whole; third, the connecting block and the synchronous belt are combined together through the tooth grooves and the belt teeth and placed in the installation cavity, and then the connecting block is connected to the fixed seat through 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 ability, which greatly reduces the installation accuracy of the components and improves the installation efficiency.

[0012] In order to improve the connection stability between the synchronous belt and the fixing seat, the synchronous belt and the fixing seat can be further fixed in the following two ways.

[0013] The first one is that a side opening is also provided on the side wall of the fixing seat facing the door panel or the counterweight block, the width of the side opening is larger than the synchronous belt and is communicated with the upper opening, the width of the installation cavity is smaller than the total thickness of the connecting block and the synchronous belt combined together, when the connecting block and the synchronous belt are combined together and placed in the installation cavity, at least part of the connecting block or the synchronous belt protrudes from the side opening to one side of the fixing seat, so that when the fixing seat is fixedly connected to the door panel or the counterweight block, the fixing seat presses the connecting block and the synchronous belt onto the door panel or the counterweight block.

[0014] The second type is that a movable pressure block is also arranged in the installation cavity, and the movable pressure block includes a pressure plate and a pressure foot arranged on the pressure plate. A side wall through hole is also arranged on the side wall of the fixed seat facing the door panel or the counterweight block. 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 the counterweight block, the door panel or the counterweight block squeezes the pressure foot so that the pressure plate of the movable pressure block is pressed tightly on the connecting block and the synchronous belt.

[0015] The connection stability between the synchronous belt and the pulley affects the smoothness of the lifting and lowering of the door panel. In order to ensure that the door panel can be lifted and lowered smoothly, a further technical solution may also include an anti-slip mechanism, wherein the anti-slip mechanism includes a wheel seat and a clamping wheel rotatably arranged on the wheel seat, wherein the clamping wheel is arranged on the circumferential outer side of the pulley, and the spacing between the clamping wheel and the wheel teeth of the pulley is smaller than the thickness of the synchronous belt but can allow the synchronous belt meshed with the pulley to pass. In this way, the synchronous belt meshed with the pulley is not easy to slip off the pulley when moving back and forth. Of course, in order to further improve stability, the clamping wheel can also press against the synchronous belt so that the belt teeth of the synchronous belt can form a tight and stable connection with the teeth of the pulley.

[0016] Since some of the door panels and counterweights are heavy, there is a certain risk in using only the synchronous belt as a connecting component. In order to improve the connection stability, a further technical solution may also include a pulley and a cable, the pulley is connected to the synchronous shaft, the cable passes around the pulley, and the two ends of the cable are respectively connected to the door panel and the counterweight. The pulley and the cable are arranged between the two sets of synchronous belts and pulleys.

[0017] The door panel may shake when it moves up and down. A further technical solution may be to further include a guiding mechanism, wherein the guiding mechanism includes at least one set of guide rails and guide wheels, wherein the guide rails and guide wheels are arranged on the door panel and the fixed base respectively, wherein the guide rails are arranged vertically, and the guide wheels are rotatably arranged in the guide rails, and at least one side of the guide side wall of the guide rail forms an interference fit with the outer wheel wall of the guide wheel. Through the guiding mechanism, the door panel can move along a specified route when it moves up and down, thereby reducing the problem of the door panel shaking back and forth, and greatly improving the stability when opening and closing the door.

[0018] A further technical solution may be 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 rollingly arranged in the guide rail falls into the V-shaped guide groove. By providing the V-shaped guide groove, the shaking of the door panel in the left and right directions can be well limited, and the stability of the movement of the door panel can be further improved.

[0019] A further technical solution may 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 side of the door panel, the vertical plate is uprightly arranged on the door panel and spaced apart from the guide rail, and the guide wheel is rotatably connected to the vertical plate.

[0020] Since the sliding door assembly has the above advantages, it can also be applied to furniture. The furniture includes a cabinet body and the sliding door assembly. The synchronizing shaft of the sliding door assembly is rotatably connected to the cabinet body.

[0021] Since the present invention has the above characteristics and advantages, it can be applied to sliding door assemblies and furniture using the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of furniture in the front view direction to which the technical solution of the present invention is applied;

[0023] Figure 2 It is a schematic diagram of the exploded structure of the furniture;

[0024] Figure 3 yes Figure 2 The schematic diagram of the local enlarged structure at M in the middle;

[0025] Figure 4 is a schematic diagram of the structure of the sliding door assembly in the axial direction;

[0026] Figure 5 is a schematic diagram of the exploded structure of the sliding door assembly;

[0027] Figure 6is a schematic diagram of the structure of the sliding door assembly in a rearward direction;

[0028] Figure 7 yes Figure 1 Schematic diagram of the cross-section structure in the AA direction;

[0029] Figure 8 yes Figure 7 A schematic diagram of the partially enlarged structure at K in the middle;

[0030] Fig. 9 is a schematic diagram of the exploded structure of the tensioning mechanism;

[0031] Fig.10 is a schematic cross-sectional structure diagram of the tensioning mechanism, showing another connection structure. DETAILED DESCRIPTION

[0032] 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 in conjunction with the accompanying drawings.

[0033] Except for those explicitly stated to be equivalent or alternative implementation schemes, the various implementation details disclosed below can be selectively applied or combined in one embodiment even if they are not directly related or synergistic in terms of functions.

[0034] like Figure 1~Figure 3 As shown, the overall structure of the furniture includes a cabinet body 1, and the cabinet body 1 includes a left vertical board 11, a right vertical board 12, an upper board 13, a lower board 14 and a back board 15. The back board 15 is connected to the rear ends of the left vertical board 11, the right vertical board 12, the upper board 13 and the lower board 14. The left vertical board 11, the right vertical board 12, the upper board 13, the lower board 14 and the back board 15 together form a cabinet cavity 10 with a front end opening. In order to cover the front end opening, a sliding door assembly 2 is also included on the front side of the cabinet body 1.

[0035] The sliding door assembly 2 is described in detail below. Figure 3~Figure 8As shown, the sliding door assembly 2 includes a door panel 21, a counterweight 22 and a synchronous shaft 23, wherein the lower ends of the left vertical plate 11 and the right vertical plate 12 extend downward beyond the lower plate 14, and connecting holes are provided on the inner side walls of the left vertical plate 11 and the right vertical plate 12, and the synchronous shaft 23 is rotatably connected to the connecting holes of the left vertical plate 11 and the right vertical plate 12, and the door panel 21 and the counterweight 22 are respectively arranged at the front and rear sides of the synchronous shaft 23. In order to support the door panel 21 and the counterweight 22 and allow the door panel 21 and the counterweight 22 to move up and down, at least two groups of pulleys 3 and synchronous belts 4 are respectively connected to the two ends of the synchronous shaft 23, and the pulleys 3 can rotate synchronously with the synchronous shaft 23, and the synchronous belt 4 passes around the pulleys 3 and the two ends of the synchronous belt 4 are respectively connected to the door panel 21 and the counterweight 22. The circumference of the pulley 3 is provided with gear teeth 31, and the synchronous belt 4 has belt teeth 41. The gear teeth 31 on the pulley 3 can mesh with the belt teeth 41 of the synchronous belt 4 to form a synchronous belt transmission. In this embodiment, the lower end of the door panel 21 also extends downward beyond the lower plate 14, and one end of the synchronous belt 4 is connected to the lower end of the door panel 21. In this way, 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 this end to rotate through the synchronous belt 4, and the pulley 3 then drives the synchronous shaft 23 to rotate. Since the synchronous shaft 23 and all the pulleys 3 connected thereto 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 very fast, so that the rise of the door panel 21 presents an overall stable state.

[0036] Because there are errors in the length and tooth position of the synchronous belt when it is cut, in order to facilitate the adjustment of the connection length and tension of the synchronous belt 4, at least one tensioning mechanism 5 is also included, and the tensioning mechanism 5 includes a fixed seat 51, a connecting block 52 and an adjusting screw 53. The fixed seat 51 is fixedly connected to the door panel 21 or the counterweight block 22. In this embodiment, the fixed seat 51 is fixedly connected to the lower end of the door panel 21. The fixed seat 51 includes a fixed seat side wall 511 and a fixed seat bottom wall 512. The fixed seat side wall 511 is arranged around to form an installation cavity 50, and the installation cavity 50 has an upper The fixing seat 51 has an opening, a bottom wall through hole 510 is provided on the bottom wall, and the connecting block 52 is provided with a tooth groove 521 which can cooperate with the belt teeth 41 of the synchronous belt 4. The connecting block 52 and the synchronous belt 4 are combined with the belt teeth 41 through the tooth groove 521 and placed in the installation cavity 50. An adjustment gap L is left between the connecting block 52 and the bottom wall of the fixing seat 51. 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, so that the synchronous belt 4 can be kept in a tensioned state. The advantage of setting the tensioning mechanism 5 is that the synchronous belt 4 can be wound around the pulley 3 in a tensioned state, and the belt teeth 41 of the synchronous belt 4 and the gear teeth 31 on the pulley 3 form a full mesh, ensuring the transmission stability and reliability of the two; by adjusting the adjusting screw 53 of the tensioning mechanism 5, the left and right heights of the door panel 21 can also be adjusted to keep the door panel 21 flat and beautiful as a whole. In addition, the connecting block 52 and the synchronous belt 4 are combined with the belt teeth 41 through the tooth groove 521 and placed in the installation cavity 50, and then the connecting block 52 is connected to the fixing seat 51 through the adjusting screw 53, which not only allows the synchronous belt 4 to be conveniently and stably installed on the fixing seat 51, but also has a certain adjustment ability, greatly reducing the installation accuracy of the tensioning mechanism 5 and improving the installation efficiency.

[0037] After the connection block 52 and the synchronous belt 4 are placed in the installation cavity 50, although they can be combined with the belt teeth 41 through the tooth grooves 521, a certain gap needs to be left during installation. When connecting the heavy door panel 21 and the counterweight block 22, the synchronous belt 4 may be loosened due to its own deformation. In order to improve the connection stability between the synchronous belt 4 and the fixing seat 51, it can be further fixed in the following two ways.

[0038] The first one, such as Figure 8As shown, a side opening is also provided on the side wall of the fixing seat 51 facing the door panel 21 or the counterweight block 22, the width of the side opening is greater than the synchronous belt 4 and is communicated with the upper opening, the width of the installation cavity 50 is less than the total thickness of the connecting block 52 and the synchronous belt 4 combined together, when the connecting block 52 and the synchronous belt 4 are combined together and placed in the installation cavity 50, at least part of the connecting block 52 or the synchronous belt 4 protrudes from the side opening to one side of the fixing seat 51, so that when the fixing seat 51 is fixedly connected to the door panel 21 or the counterweight block 22, the fixing seat 51 presses the connecting block 52 and the synchronous belt 4 onto the door panel 21 or the counterweight block 22. In actual installation, the fixing seat 51 is generally connected to the door panel 21 or the counterweight 22 by means of fastening screws, but the fastening screws are not completely tightened so that a certain gap is left between the fixing seat 51 and the door panel 21 or the counterweight 22, so that the connecting block 52 and the synchronous belt 4 can be easily placed in the installation cavity 50. After adjusting the adjusting screws 53, the fastening screws are tightened so that the fixing seat 51 presses the connecting block 52 and the synchronous belt 4 onto the door panel 21 or the counterweight 22.

[0039] The second type, such as Fig.10 As shown, a movable pressure block 9 is also arranged in the installation cavity 50, and the movable pressure block 9 includes a pressure plate 91 and a pressure foot 92 arranged on the pressure plate 91. A side wall through hole is also arranged on the side wall of the fixed seat 51 facing the door panel 21 or the counterweight block 22. 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 block 22, the door panel 21 or the counterweight block 22 squeezes the pressure foot 92 so that the pressure plate 91 of the movable pressure block 9 is pressed tightly against the connecting block 52 and the synchronous belt 4.

[0040] 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. In order to ensure that the door panel 21 can be lifted and lowered smoothly, a further technical solution may also include an anti-slip mechanism 6, which includes a wheel seat 61 and a clamping wheel 62 rotatably arranged on the wheel seat 61. The clamping wheel 62 is arranged on the circumferential outer side of the pulley 3, and the spacing between the clamping wheel 62 and the gear teeth 31 of the pulley 3 is smaller than the total thickness of the synchronous belt 4 but can allow the synchronous belt 4 meshed with the pulley 3 to pass. In this way, the synchronous belt 4 meshed with the pulley 3 is not easy to slip off the pulley 3 when moving back and forth. Of course, the clamping wheel 62 can also press on the synchronous belt 4 so that the belt teeth 41 of the synchronous belt 4 can form a tight and stable connection with the gear teeth 31 of the pulley 3. In order to further improve the stability, a compression spring (not shown in the figure) may be provided between the wheel seat 61 and the pressure wheel 62 , and the pressure wheel 62 may be pressed onto the synchronous belt 4 by the compression spring.

[0041] Since some of the door panels 21 and the counterweight 22 are heavy, there is a certain risk of breakage when only the synchronous belt 4 is used as a connecting component. In order to improve the connection stability, a further technical solution may also include a pulley 71 and a cable 72, wherein the pulley 71 is connected to the synchronous shaft 23, the cable 72 passes around the pulley 71, and the two ends of the cable 72 are respectively connected to the door panel 21 and the counterweight 22. The pulley 71 and the cable 72 are arranged between the two sets of the synchronous belt 4 and the pulley 3.

[0042] The door panel 21 may shake when it moves up and down. A further technical solution may be to further include a guide mechanism 8, which includes at least one set of guide rails 81 and guide wheels 82. The guide rails 81 and guide wheels 82 are arranged on the door panel 21 and the fixed base (i.e., the cabinet 1), respectively, wherein the guide rails 81 are arranged vertically, and a plurality of guide wheels 82 are rotatably arranged in the guide rails 81, and at least one side guide side wall of the guide rails 81 forms an interference fit with the outer wheel wall of the guide wheel 82. Through the guide mechanism, the door panel 21 can move along a specified route when it moves up and down, reducing the problem of the door panel 21 shaking back and forth, and greatly improving the stability when opening and closing the door.

[0043] 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 rollingly arranged in the guide rail 81 falls into the V-shaped guide groove. By providing the V-shaped guide groove, the shaking of the door panel 21 in the left and right directions can be well limited, and the stability of the movement of the door panel 21 is further improved.

[0044] In order 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 side of the door panel 21, and the vertical plate 832 is uprightly arranged 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 groups of pulleys and synchronous belts respectively connected to both ends of the synchronous shaft, wherein the pulley can rotate synchronously with the synchronous shaft, the synchronous belt passes over the pulley and the two ends of the synchronous belt are respectively connected to the door panel and the counterweight; characterized in that: The invention also comprises at least one tensioning mechanism, which comprises a fixing seat, a connecting block and an adjusting screw, wherein the fixing seat is fixedly connected to the door panel or the counterweight block, and an installation cavity is arranged on the fixing seat, and the installation cavity has an upper opening, and a bottom wall through hole is arranged on the bottom wall of the fixing seat, and a tooth groove which can cooperate with the belt teeth of the synchronous belt is arranged on the connecting block, and the connecting block and the synchronous belt are combined with the tooth groove and the belt teeth and placed in the installation cavity, and an adjustment gap is left between the connecting block and the bottom wall of the fixing seat, and the adjusting screw passes through the bottom wall through hole from bottom to top and is connected to the connecting block, and the size of the adjustment gap can be adjusted by adjusting the adjusting screw, so that the synchronous belt can be kept in a tensioned state.

2. The sliding door assembly according to claim 1, characterized in that: A side opening is also provided on the side wall of the fixing seat facing the door panel or the counterweight block, the width of the side opening is greater than the synchronous belt and is communicated with the upper opening, the width of the installation cavity is less than the total thickness of the connecting block and the synchronous belt combined together, when the connecting block and the synchronous belt are combined together and placed in the installation cavity, at least part of the connecting block or the synchronous belt protrudes from the side opening to one side of the fixing seat, so that when the fixing seat is fixedly connected to the door panel or the counterweight block, the fixing seat presses the connecting block and the synchronous belt onto the door panel or the counterweight block.

3. The sliding door assembly according to claim 1, characterized in that: A movable pressure block is also arranged in the installation cavity, and the movable pressure block includes a pressure plate and a pressure foot arranged on the pressure plate. A side wall through hole is also arranged on the side wall of the fixed seat facing the door panel or the counterweight block, and 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 the counterweight block, the door panel or the counterweight block squeezes the pressure foot so that the pressure plate of the movable pressure block is pressed tightly against the connecting block and the synchronous belt.

4. The sliding door assembly according to any one of claims 1 to 3, characterized in that: It also includes an anti-slip mechanism, which includes a wheel seat and a clamping wheel rotatably disposed on the wheel seat, the clamping wheel is arranged on the circumferential outer side of the pulley, and the spacing between the clamping wheel and the wheel teeth of the pulley is smaller than the thickness of the synchronous belt but can allow the synchronous belt meshing with the pulley to pass.

5. The sliding door assembly according to any one of claims 1 to 3, characterized in that: It also includes a pulley and a cable, wherein the pulley is connected to the synchronous shaft, the cable passes around the pulley, and the two ends of the cable are respectively connected to the door panel and the counterweight block, and the pulley and the cable are arranged between the two groups 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, wherein the guide rails and guide wheels are respectively arranged on the door panel and the fixed base, wherein the guide rails are arranged vertically, and the guide wheels are rotatably set in the guide rails, and at least one side guiding side wall of the guide rail forms an interference fit with the outer wheel wall of the guide wheel.

7. The sliding door assembly according to claim 6, characterized in that: A V-shaped guide groove is arranged on the guide side wall of at least one of the guide rails, and at least a part of the outer wheel wall of the guide wheel rollingly arranged in the guide rail falls into 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 side of the door panel, the vertical plate is vertically arranged on the door panel and spaced apart from the guide rail, and the guide wheel is rotatably connected to the vertical plate.

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

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