Furniture with drawer interlocking function

Abstract

The application discloses furniture with drawer interlocking function, which comprises a cabinet body, at least two drawers arranged in the cabinet body and a guide rail assembly, the guide rail assembly comprises an inner rail assembly, a middle rail assembly and an outer rail assembly, the outer rail assembly is fixed on the cabinet body, the inner rail assembly is connected with the drawer and the middle rail assembly respectively, the middle rail assembly is connected with the outer rail assembly in a sliding mode, and the furniture further comprises an interlocking assembly arranged between the guide rail assembly, the interlocking assembly is located at the front end of the drawer and comprises locking pieces and connecting rods, the locking pieces are arranged at two ends of the connecting rods respectively, the locking piece at one end of the connecting rod is embedded in the locking piece at the other end of the other connecting rod and is connected in a linkage mode, and an adjusting assembly is arranged between the locking pieces and the connecting rods, the up-down positions between the locking pieces and the connecting rods are adjusted through the adjusting assembly, or the locking pieces and the connecting rods are connected in a cooperation mode.

Description

Technical Field

[0001] This invention relates to the field of furniture technology, and in particular to a piece of furniture with a drawer interlocking function. Background Technology

[0002] Chinese patent document CN116138571A disclosed an office storage cabinet on May 23, 2023, including a cabinet body and multiple drawers, and further including: side panels, a bottom plate, and a guide sliding assembly; the drawers are slidably connected to the cabinet body via the guide sliding assembly; the end of the drawer away from the cabinet body is set as an opening, a rotating shaft is fixed in the opening of the drawer, the side panel is rotatably connected to the rotating shaft, and a handle is fixed on the side panel; multiple drawers of this office storage cabinet can be opened simultaneously, and when several drawers are opened at the same time, the load-bearing capacity of the drawers will be large, which can easily cause the cabinet to tip over, posing a great safety hazard.

[0003] Therefore, further improvements are necessary. Summary of the Invention

[0004] The purpose of this invention is to provide a furniture with drawer interlocking function that is simple and reasonable in structure, highly safe, of high quality in use, and highly practical, so as to overcome the shortcomings of the prior art.

[0005] A piece of furniture with a drawer interlocking function designed for this purpose includes a cabinet body, at least two drawers arranged vertically within the cabinet body, and a guide rail assembly. The guide rail assembly includes an inner rail assembly, a middle rail assembly, and an outer rail assembly. The outer rail assembly is fixed to the cabinet body. The inner rail assembly is connected to the drawers and the middle rail assembly respectively. The middle rail assembly is slidably connected to the outer rail assembly. The furniture is characterized by further including an interlocking assembly disposed between the guide rail assemblies. The interlocking assembly is located at the front end of the drawer and includes a locking element and a connecting rod. The locking element is disposed at both ends of the connecting rod, and the locking element at one end of the connecting rod is connected to the other end of the connecting rod. The locking components at the other end are interlocked and linked; an adjustment component is provided between the locking component and the connecting rod, which adjusts the vertical position between the locking component and the connecting rod, or the locking component and the connecting rod are connected in a cooperative manner; when one drawer is pulled out, the inner rail component acts on the locking component at one end of the connecting rod, so that the interlocking component moves longitudinally, thereby locking the locking component at the other end of the connecting rod with its corresponding inner rail component, and the locking component at one end of the connecting rod presses against the middle rail component. When the interlocking component moves longitudinally, it drives other interlocking components to move longitudinally, so that the locking components of other interlocking components lock their corresponding inner rail components.

[0006] The inner rail assembly includes an inner rail and a push plate. The push plate is connected to the front end of the inner rail. A first inclined surface is provided on the locking element, and a second inclined surface is provided on the push plate. When one of the drawers is pulled out, the inner rail acts on the locking element at one end of the connecting rod through the cooperation of the first and second inclined surfaces, so that the interlocking assembly moves longitudinally, thereby locking the corresponding inner rail at the other end of the connecting rod through the cooperation of the first and second inclined surfaces. A third inclined surface is provided on the push plate that cooperates with the first inclined surface.

[0007] The center rail assembly includes a center rail and a connector. The connector is connected to the front end of the center rail. The connector is provided with a first fastening part, and the push plate is provided with a second fastening part. The connector and the push plate are fastened to each other through the cooperation of the first fastening part and the second fastening part. Flanges are provided on both sides of the center rail. A first positioning surface is provided on the locking part. After the interlocking assembly moves longitudinally, the first positioning surface of the locking part at one end of the connecting rod abuts against the flange of the center rail.

[0008] The outer rail assembly includes an outer rail and a fixed base. The fixed base is connected to the front end of the outer rail. The fixed base is provided with a sliding groove, the outer rail is provided with a positioning hole, and the locking member is provided with a sliding part. The sliding part slides on the sliding groove after passing through the positioning hole, and the sliding part is positioned in the positioning hole in all directions.

[0009] The locking component is provided with positioning ribs and locking protrusions, the fixing base is provided with buckles, and the positioning hole is provided with positioning edges. The positioning ribs and buckles cooperate with each other, and the locking protrusions and positioning edges cooperate with each other.

[0010] The outer rail is provided with a positioning protrusion, a positioning flange, and a positioning fold. The fixing seat is provided with a positioning notch, a first positioning edge, and a second positioning edge. The fixing seat is installed on the outer rail by the cooperation of the positioning protrusion with the positioning notch, the cooperation of the positioning flange with the first positioning edge, and the cooperation of the positioning fold with the second positioning edge. The outer rail is provided with a first fixing hole, and the fixing seat is provided with a second fixing hole. The first fixing hole and the second fixing hole are provided with a first screw to fix the outer rail and the fixing seat to the cabinet.

[0011] The locking component is provided with a pushing part. The locking component at one end of the connecting rod and the locking component at the other end of the other connecting rod are interlocked and linked through the pushing part. The pushing part is provided with a pushing surface and a pushing mating surface. When the locking component moves longitudinally, it pushes other locking components to move longitudinally through the cooperation of the pushing surface and the pushing mating surface.

[0012] The adjustment assembly includes an adjustment component and an adjustment mating component. The adjustment component is mounted on the locking component, and the adjustment mating component is provided with a first fixing part. The two ends of the connecting rod are respectively clamped onto the corresponding first fixing parts. An adjustment part is provided between the adjustment component and the adjustment mating component. The adjustment component and the adjustment mating component adjust the vertical position between the locking component and the connecting rod through the adjustment part.

[0013] The locking component is provided with a second fixing part, and the two ends of the connecting rod are respectively locked onto the corresponding second fixing part.

[0014] The drawer includes a side panel and a front panel. The push panel has a second positioning surface, and the front panel has a third positioning surface. The inner rail assembly is positioned on the drawer by the cooperation of the second and third positioning surfaces. The inner rail has a third fixing part, and fasteners are provided on the third fixing part to fix the inner rail to the side panel.

[0015] The present invention has the following beneficial effects:

[0016] 1. By installing interlocking components between the guide rail assemblies, when all drawers in the cabinet are closed, the interlocking components can move up and down, allowing any drawer in the cabinet to be opened. When one drawer is open, the interlocking components cannot move up or down; the locking mechanism of the interlocking components locks the push plate of the inner rail assembly, preventing the push plate from sliding back and forth. At the same time, the inner rail linked to the push plate cannot be pulled out. This ensures that other drawers cannot be opened, achieving the interlocking function between the guide rail assemblies. This improves the structural stability of the furniture, and the fact that drawers cannot be opened simultaneously prevents the cabinet from tipping over, increasing safety and ensuring the quality of product use.

[0017] 2. The interlocking component is installed at the front of the drawer, which facilitates the processing of the guide rail components and the installation of the interlocking component. Since the interlocking component is located at the front opening of the cabinet, it can be easily installed and removed through the front opening of the cabinet.

[0018] 3. The vertical position between the locking component and the connecting rod can be adjusted by adjusting the component, which can compensate for the cutting error of the connecting rod, that is, make up for the length tolerance of the connecting rod. This allows for adjustment of the tightness of the interlock component and the guide rail component, making the contact between the locking component and the inner and middle rails more precise, improving the interlocking effect, and making the locking effect more secure. If the interlock component and the guide rail component are too loose, it will cause the inner rail component to wobble back and forth, resulting in an unsatisfactory interlocking effect.

[0019] 4. The interlocking function can be achieved through interlocking components, inner rail components, and middle rail components. It has fewer parts, does not require a transmission structure, has low manufacturing cost, and has a simpler and more reliable structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the furniture in the first embodiment of the present invention.

[0021] Figure 2 This is a cross-sectional view of the furniture in the drawer closed state according to the first embodiment of the present invention.

[0022] Figure 3 This is a cross-sectional view of the furniture when one of the drawers is opened in the first embodiment of the present invention.

[0023] Figure 4 This is a partial exploded view of the guide rail assembly in the first embodiment of the present invention.

[0024] Figure 5 This is a partial exploded view of the inner rail assembly in the first embodiment of the present invention.

[0025] Figure 6 This is a partial exploded view of the middle track component in the first embodiment of the present invention.

[0026] Figure 7 This is a partial exploded view of the outer rail assembly in the first embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram of the overall structure of the interlocking component in the first embodiment of the present invention.

[0028] Figure 9 This is a partial structural exploded view of the interlocking component in the first embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram of the overall structure of the interlocking component in the second embodiment of the present invention.

[0030] Figure 11 This is an exploded structural diagram of the interlocking component in the second embodiment of the present invention.

[0031] Figure 12 This is a partial exploded view of the interlocking assembly and guide rail assembly in the first embodiment of the present invention.

[0032] Figure 13 This is a partial structural diagram of the inner rail assembly in the first embodiment of the present invention.

[0033] Figure 14 This is a partial structural diagram of the interlocking component in the first embodiment of the present invention.

[0034] Figure 15 This is a partial front view of the interlock assembly and guide rail assembly when the inner rail assembly is not pulled out in the first embodiment of the present invention.

[0035] Figure 16 This is a partial front view of the interlocking assembly and guide rail assembly when the inner rail assembly is pulled out in the first embodiment of the present invention.

[0036] Figure 17 This is a partial bottom view of the interlock assembly and guide rail assembly in the first embodiment of the present invention when the inner rail assembly is not pulled out.

[0037] Figure 18 This is a schematic diagram of the interlocking structure of the components in the first embodiment of the present invention.

[0038] Figure 19This is a partial structural diagram of the interlocking assembly and the guide rail assembly when the inner rail assembly is pulled out in the first embodiment of the present invention.

[0039] Figure 20 This is a partial structural diagram of the interlocking assembly and the guide rail assembly in another position when the inner rail assembly is pulled out in the first embodiment of the present invention.

[0040] Figure 21 This is a partial structural cross-sectional view of the guide rail assembly in the first embodiment of the present invention.

[0041] Figure 22 for Figure 21 A magnified structural diagram of point A in the middle.

[0042] Figure 23 This is a partial structural diagram of the middle rail component in the first embodiment of the present invention.

[0043] Figure 24 This is a partial structural diagram of the inner rail assembly in another position in the first embodiment of the present invention.

[0044] Figure 25 This is a cross-sectional view of the assembly structure of the interlocking component and the guide rail component in the first embodiment of the present invention.

[0045] Figure 26 for Figure 25 A magnified structural diagram at point B in the middle.

[0046] Figure 27 This is a schematic diagram of the overall structure of the locking component in the first embodiment of the present invention.

[0047] Figure 28 This is a schematic diagram of the overall structure of the locking member from another position in the first embodiment of the present invention.

[0048] Figure 29 This is a schematic diagram of the overall structure of the fixing base in the first embodiment of the present invention.

[0049] Figure 30 This is a partial structural diagram of the third position of the inner rail component in the first embodiment of the present invention.

[0050] Figure 31 This is a partial structural diagram of the drawer in the first embodiment of the present invention.

[0051] Figure 32 This is a partial front view of the drawer structure in the first embodiment of the present invention. Detailed Implementation

[0052] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0053] See Figures 1-9 , Figures 12-32 This furniture with drawer interlocking function includes a cabinet body 1, at least two drawers 2 arranged vertically within the cabinet body 1, and a guide rail assembly a. In this embodiment, three drawers 2 are provided. The guide rail assembly a includes an inner rail assembly 3, a middle rail assembly 4, and an outer rail assembly 5. The outer rail assembly 5 is fixed to the cabinet body 1. The inner rail assembly 3 is connected to the drawers 2 and the middle rail assembly 4 respectively. The middle rail assembly 4 is slidably connected to the outer rail assembly 5. The furniture also includes an interlocking assembly b disposed between the guide rail assemblies a. The interlocking assembly b is located at the front end of the drawers 2 (guide rail assembly a) and includes a locking element 6 and a connecting rod 7. The locking element 6 is disposed at both ends of the connecting rod 7. The locking element 6 is a pin. The locking element 6 at one end of the connecting rod 7 and the locking element 6 at the other end of the other connecting rod 7 are interlocked and linked. An adjustment assembly c is provided between the locking element 6 and the connecting rod 7. The locking element 6 and the connecting rod 7 are adjusted by adjusting the locking element 6 and the connecting rod 7. The vertical position of the levers 7; when one drawer 2 is pulled out, the drawer 2 drives the corresponding inner rail assembly 3 and the middle rail assembly 4 to be pulled out. The inner rail assembly 3 acts on the locking piece 6 at one end of the lever 7, so that the interlocking assembly b moves longitudinally (up or down), thereby locking the corresponding inner rail assembly 3 at the other end of the lever 7, so that the corresponding inner rail assembly 3 cannot move, thus locking the corresponding drawer 2. After the inner rail assembly 3 and the middle rail assembly 4 are pulled out a certain distance, the locking piece 6 at one end of the lever 7 presses against the middle rail assembly 4. At this time, the interlocking assembly b cannot move. When the interlocking assembly b moves longitudinally, it drives the other interlocking assemblies b to move longitudinally at the same time, so that the locking pieces 6 of the other interlocking assemblies b lock the corresponding inner rail assembly 3, so that the other inner rail assembly 3 cannot move, thus locking the other drawers 2. At this time, all interlocking assemblies b cannot move. This furniture with drawer interlocking function, through the overall cooperation of guide rail assembly a, drawer 2, cabinet 1 and interlocking assembly b, allows only one drawer 2 to be pulled out at a time when multiple drawers 2 of cabinet 1 are closed, thanks to the interlocking action of interlocking assembly b. This achieves the interlocking function between guide rail assemblies a, improves structural stability, increases safety in use, and ensures the quality of product use.

[0054] The inner rail assembly 3 includes an inner rail 8 and a push plate 9. The push plate 9 is connected to the front end of the inner rail 8, and the push plate 9 and the inner rail 8 are riveted together by rivets 19. The locking element 6 is provided with a first inclined surface 6.1, and the push plate 9 is provided with a second inclined surface 9.1. When all drawers 2 in the cabinet 1 are closed, all interlocking components b can move up and down. When one of the drawers 2 is pulled out, the inner rail 8, through the cooperation of the first inclined surface 6.1 and the second inclined surface 9.1, acts on the locking element 6 at one end of the connecting rod 7 to push the interlocking component b to move longitudinally, thereby... The locking element 6 at the other end of the connecting rod 7 locks the corresponding inner rail 8 through the cooperation of the first inclined surface 6.1 and the second inclined surface 9.1. That is, the first inclined surface 6.1 presses against the second inclined surface 9.1, so that the corresponding inner rail 8 cannot move back and forth. When the inner rail 8 cannot move back and forth, the drawer 2 associated with it cannot be opened. At the same time, all interlocking components b in the cabinet 1 cannot move up and down, so that other drawers 2 in the cabinet 1 cannot be opened. Only one drawer 2 can be opened at a time in a cabinet 1, thus achieving the interlocking effect.

[0055] The push plate 9 is provided with a third inclined surface 9.4 that cooperates with the first inclined surface 6.1. If the drawer 2 pulls out the inner rail assembly 3 but the middle rail assembly 4 is not pulled out, and then the inner rail assembly 3 is pushed back in, the inner rail assembly 3 will push the locking piece 6 open through the cooperation of the third inclined surface 9.4 and the first inclined surface 6.1, to prevent the inner rail assembly 3 from being stuck by the locking piece 6 when it is pushed back in, thus preventing the drawer 2 from closing.

[0056] The center rail assembly 4 includes a center rail 10 and a connector 11. The connector 11 is connected to the front end of the center rail 10 and is snapped into the center rail 10 by a snap-fit. The connector 11 is a rubber plug. The connector 11 is provided with a first snap-fit ​​part 11.1, and the push plate 9 is provided with a second snap-fit ​​part 9.2. The connector 11 and the push plate 9 are snapped together by the cooperation of the first snap-fit ​​part 11.1 and the second snap-fit ​​part 9.2. The first snap-fit ​​part 11.1 is a snap-fit, and the second snap-fit ​​part 9.2 is a retaining rib. When the inner rail assembly 3 is pulled out or pushed in, it will drive the middle rail assembly 4 to be pulled out or pushed in simultaneously, so that the drawer 2 can achieve the interlock function when it is pulled out slightly; the middle rail 10 is provided with flanges 10.1 on both sides, and the locking member 6 is provided with a first positioning surface 6.2. After the interlock assembly b moves longitudinally, the first positioning surface 6.2 of the locking member 6 at one end of the connecting rod 7 abuts against the flanges 10.1 of the middle rail 10. At this time, the interlock assembly b cannot move up and down, and the other drawers 2 associated with it cannot be opened.

[0057] The outer rail assembly 5 includes an outer rail 12 and a fixing seat 13. The fixing seat 13 is connected to the front end of the outer rail 12 and is snapped into the outer rail 12. The fixing seat 13 is provided with a sliding groove 13.1, and the outer rail 12 is provided with a positioning hole 12.1. The positioning hole 12.1 is a square hole. The locking member 6 is provided with a sliding part 6.3. The sliding part 6.3 passes through the positioning hole 12.1 and slides up and down on the sliding groove 13.1. This structure allows the locking member 6 to act on the inner rail 8 and the middle rail 10. The sliding part 6.3 is positioned in the positioning hole 12.1 in all directions, and the positioning hole 12.1 serves as a guide for vertical movement.

[0058] The locking component 6 is provided with a positioning rib 6.4 and a latching protrusion 6.5, the fixing base 13 is provided with a latching position 13.2, and the positioning hole 12.1 is provided with a positioning edge 12.2. The positioning rib 6.4 and the latching position 13.2 cooperate with each other so that when the guide rail assembly a is installed on the cabinet 1, the interlocking assembly b will not fall off due to gravity when it is in a vertical state. The latching protrusion 6.5 and the positioning edge 12.2 cooperate with each other so that the interlocking assembly b will not automatically droop due to gravity, and at the same time, the interlocking assembly b must be pushed by an external force to slide vertically up and down. The above structure also makes it convenient for users to install the interlocking assembly b.

[0059] The outer rail 12 is provided with a positioning protrusion 12.3, a positioning flange 12.4, and a positioning folded edge 12.5. The fixing seat 13 is provided with a positioning notch 13.3, a first positioning edge 13.4, and a second positioning edge 13.5. The fixing seat 13 is positioned and installed on the outer rail 12 through the cooperation of the positioning protrusion 12.3 and the positioning notch 13.3, the cooperation of the positioning flange 12.4 and the first positioning edge 13.4, and the cooperation of the positioning folded edge 12.5 and the second positioning edge 13.5. The outer rail 12 is provided with a first fixing hole 12.6, and the fixing seat 13 is provided with a second fixing hole 13.6. A first screw 22 is provided on the first fixing hole 12.6 and the second fixing hole 13.6 to fix the outer rail 12 and the fixing seat 13 to the cabinet 1. The first screw 22 can prevent the fixing seat 13 from deforming. When the upper and lower locking parts 6 are subjected to force, the fixing seat 13 is easily deformed. The deformation of the fixing seat 13 will cause the push parts 6.6 of the upper and lower locking parts 6 to fail to stack and link.

[0060] The locking member 6 is provided with a pushing part 6.6. The locking member 6 at one end of the connecting rod 7 and the locking member 6 at the other end of the other connecting rod 7 are interlocked and linked through the pushing part 6.6. The pushing part 6.6 is provided with a pushing surface 6.7 and a pushing mating surface 6.8. When the locking member 6 moves longitudinally, it pushes other locking members 6 to move longitudinally through the cooperation of the pushing surface 6.7 and the pushing mating surface 6.8. When any locking member 6 moves, it will push other locking members 6 to move, so as to realize the interlocking between the guide rail assemblies a.

[0061] Adjustment component c includes an adjusting member 14 and an adjusting mating member 15. The adjusting member 14 is installed on the adjusting groove 6.10 of the locking member 6. The adjusting mating member 15 is provided with a first fixing part 15.1. The two ends of the connecting rod 7 are respectively snapped onto the corresponding first fixing part 15.1 by buckles. The first fixing part 15.1 is a slot. During installation, first install the adjusting member 14 onto the locking member 6, then connect the adjusting member 14 and the adjusting mating member 15, then insert the locking member 6 into the guide rail assembly a already installed on the cabinet 1, and finally snap the connecting rod 7 into the adjusting mating member 15 respectively. An adjustment part d is provided between the component 14 and the adjusting mating part 15. The adjustment part 14 and the adjusting mating part 15 adjust the vertical position between the locking part 6 and the connecting rod 7 through the adjustment part d. Specifically, the adjustment part 14 is an adjusting nut, and the adjustment part d is a threaded part 14.1 provided on the adjustment part 14 and an adjusting screw 15.2 provided on the adjusting mating part 15. The threaded part 14.1 and the adjusting screw 15.2 cooperate with each other. Its working principle is to rotate the adjustment part 14 to push the adjusting mating part 15 to move up and down, so as to realize the vertical fine adjustment function between the locking part 6 and the connecting rod 7.

[0062] Drawer 2 includes a side panel 16 and a front panel 17. The push plate 9 is provided with a second positioning surface 9.3, and the front panel 17 is provided with a third positioning surface 17.1. The inner rail assembly 3 is positioned on the drawer 2 by the cooperation of the second positioning surface 9.3 and the third positioning surface 17.1. The inner rail 8 is provided with a third fixing part 8.1, and a fastener 18 is provided on the third fixing part 8.1 to fix the inner rail 8 to the side panel 16. The third fixing part 8.1 is a fixing hole, and the fastener 18 is a screw. The second positioning surface 9.3 and the third positioning surface 17.1 make it convenient for users to install the inner rail assembly 3 on the drawer 2 without the need for users to draw lines for positioning. It is convenient for users to position the inner rail assembly 3 front and back. First, use the second positioning surface 9.3 of the push plate 9 to align with the third positioning surface 17.1 of the front panel 17, and then use screws to fix the inner rail assembly 3 to the side panel 16 of the drawer 2. When the drawer 2 is opened or closed, the inner rail assembly 3 moves synchronously to open or close.

[0063] It also includes an inner rail bead frame assembly 20 and a middle rail bead frame assembly 21. The inner rail bead frame assembly 20 is installed on the middle rail assembly 4, the inner rail assembly 3 is installed on the inner rail bead frame assembly 20, and the middle rail bead frame assembly 21 is located on both sides of the middle rail assembly 4 and between the middle rail assembly 4 and the outer rail assembly 5. Example

[0064] See Figures 10-11 This furniture with drawer interlocking function differs from the first embodiment in that:

[0065] The locking element 6 and the connecting rod 7 are connected in cooperation. Specifically, the locking element 6 is provided with a second fixing part 6.9. The two ends of the connecting rod 7 are respectively fastened to the corresponding second fixing part 6.9 by buckles. The second fixing part 6.9 is a slot. The interlocking component b of this structure does not have a fine-tuning function. During installation, the locking element 6 is first inserted into the guide rail component a that has been installed on the cabinet 1, and finally the connecting rod 7 is snapped into the locking element 6.

[0066] The other parts not described are the same as in the first embodiment, and will not be analyzed or explained here.

[0067] The above describes the preferred embodiments of the present invention, illustrating and describing the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A piece of furniture with drawer interlocking function, comprising a cabinet (1), at least two drawers (2) arranged vertically within the cabinet (1), and a guide rail assembly (a), wherein the guide rail assembly (a) comprises an inner rail assembly (3), a middle rail assembly (4), and an outer rail assembly (5), the outer rail assembly (5) being fixed to the cabinet (1), the inner rail assembly (3) being connected to the drawers (2) and the middle rail assembly (4) respectively, and the middle rail assembly (4) being slidably connected to the outer rail assembly (5), characterized in that: It also includes an interlocking assembly (b) disposed between the guide rail assemblies (a). The interlocking assembly (b) is located at the front end of the drawer (2) and includes a locking element (6) and a connecting rod (7). The locking elements (6) are respectively disposed at both ends of the connecting rod (7). The locking element (6) at one end of the connecting rod (7) and the locking element (6) at the other end of the other connecting rod (7) are interlocked and linked. An adjusting assembly (c) is disposed between the locking element (6) and the connecting rod (7). The vertical position between the locking element (6) and the connecting rod (7) is adjusted by the adjusting assembly (c). Alternatively, the locking element (6) Connected with the connecting rod (7); when one of the drawers (2) is pulled out, the inner rail assembly (3) acts on the locking piece (6) at one end of the connecting rod (7) to make the interlocking assembly (b) move longitudinally, thereby making the locking piece (6) at the other end of the connecting rod (7) lock the corresponding inner rail assembly (3), the locking piece (6) at one end of the connecting rod (7) presses against the middle rail assembly (4), when the interlocking assembly (b) moves longitudinally, it drives other interlocking assemblies (b) to move longitudinally, so that the locking pieces (6) of other interlocking assemblies (b) lock the corresponding inner rail assembly (3); The outer rail assembly (5) includes an outer rail (12) and a fixed seat (13). The fixed seat (13) is connected to the front end of the outer rail (12). The fixed seat (13) is provided with a sliding groove (13.1). The outer rail (12) is provided with a positioning hole (12.1). The locking member (6) is provided with a sliding part (6.3). The sliding part (6.3) slides on the sliding groove (13.1) after passing through the positioning hole (12.1). The sliding part (6.3) is positioned in the positioning hole (12.1) in all directions. The locking part (6) is provided with a positioning rib (6.4) and a snap protrusion (6.5), the fixing seat (13) is provided with a buckle (13.2), and the positioning hole (12.1) is provided with a positioning edge (12.2). The positioning rib (6.4) and the buckle (13.2) cooperate with each other, and the snap protrusion (6.5) and the positioning edge (12.2) cooperate with each other. The outer rail (12) is provided with a positioning protrusion (12.3), a positioning flange (12.4) and a positioning fold (12.5). The fixed seat (13) is provided with a positioning notch (13.3), a first positioning edge (13.4) and a second positioning edge (13.5). The fixed seat (13) is installed on the outer rail (12) by the cooperation of the positioning protrusion (12.3) and the positioning notch (13.3), the cooperation of the positioning flange (12.4) and the first positioning edge (13.4), and the cooperation of the positioning fold (12.5) and the second positioning edge (13.5). The outer rail (12) is provided with a first fixing hole (12.6), and the fixed seat (13) is provided with a second fixing hole (13.6). The first fixing hole (12.6) and the second fixing hole (13.6) are provided with a first screw (22) so that the outer rail (12) and the fixed seat (13) are fixed on the cabinet (1).

2. The furniture with drawer interlocking function according to claim 1, characterized in that: The inner rail assembly (3) includes an inner rail (8) and a push plate (9). The push plate (9) is connected to the front end of the inner rail (8). The locking member (6) is provided with a first inclined surface (6.1), and the push plate (9) is provided with a second inclined surface (9.1). When one of the drawers (2) is pulled out, the inner rail (8) acts on the locking member (6) at one end of the connecting rod (7) through the cooperation of the first inclined surface (6.1) and the second inclined surface (9.1), so that the interlocking assembly (b) moves longitudinally, and then the locking member (6) at the other end of the connecting rod (7) locks the corresponding inner rail (8) through the cooperation of the first inclined surface (6.1) and the second inclined surface (9.1). The push plate (9) is provided with a third inclined surface (9.4) that cooperates with the first inclined surface (6.1).

3. The furniture with drawer interlocking function according to claim 2, characterized in that: The middle rail assembly (4) includes a middle rail (10) and a connector (11). The connector (11) is connected to the front end of the middle rail (10). The connector (11) is provided with a first fastening part (11.1), and the push plate (9) is provided with a second fastening part (9.2). The connector (11) and the push plate (9) are fastened to each other by the cooperation of the first fastening part (11.1) and the second fastening part (9.2). The middle rail (10) is provided with flanges (10.1) on both sides. The locking member (6) is provided with a first positioning surface (6.2). After the interlock assembly (b) moves longitudinally, the first positioning surface (6.2) of the locking member (6) at one end of the connecting rod (7) abuts against the flange (10.1) of the middle rail (10).

4. The furniture with drawer interlocking function according to claim 1, characterized in that: The locking member (6) is provided with a pushing part (6.6). The locking member (6) at one end of the connecting rod (7) and the locking member (6) at the other end of the other connecting rod (7) are engaged and linked together through the pushing part (6.6). The pushing part (6.6) is provided with a pushing surface (6.7) and a pushing mating surface (6.8). When the locking member (6) moves longitudinally, it pushes other locking members (6) to move longitudinally through the cooperation of the pushing surface (6.7) and the pushing mating surface (6.8).

5. The furniture with drawer interlocking function according to claim 1, characterized in that: The adjustment assembly (c) includes an adjustment member (14) and an adjustment fitting member (15). The adjustment member (14) is mounted on the locking member (6). The adjustment fitting member (15) is provided with a first fixing part (15.1). The two ends of the connecting rod (7) are respectively clamped on the corresponding first fixing parts (15.1). An adjustment part (d) is provided between the adjustment member (14) and the adjustment fitting member (15). The adjustment member (14) and the adjustment fitting member (15) adjust the vertical position between the locking member (6) and the connecting rod (7) through the adjustment part (d).

6. The furniture with drawer interlocking function according to claim 1, characterized in that: The locking member (6) is provided with a second fixing part (6.9), and the two ends of the connecting rod (7) are respectively locked onto the corresponding second fixing part (6.9).

7. The furniture with drawer interlocking function according to claim 2, characterized in that: The drawer (2) includes a side panel (16) and a front panel (17). The push plate (9) is provided with a second positioning surface (9.3), and the front panel (17) is provided with a third positioning surface (17.1). The inner rail assembly (3) is positioned on the drawer (2) by the cooperation of the second positioning surface (9.3) and the third positioning surface (17.1). The inner rail (8) is provided with a third fixing part (8.1), and the third fixing part (8.1) is provided with a fastener (18) so that the inner rail (8) is fixed on the side panel (16).

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