Synchronous slide rail with split butt-jointed connecting rod

Abstract

The present invention relates to the technical field of slide rails, and discloses a synchronous slide rail with a split butt-jointed connecting rod, comprising a pair of rail assemblies and a connecting rod assembly connected between the pair of slide rail assemblies, the slide rail assembly comprising a fixed guide rail and a sliding guide rail, the connecting rod assembly comprising a split butt-jointed connecting rod and gears arranged at both ends of the split butt-jointed connecting rod, a flange for connecting to the sliding guide rail is arranged on the side of the gear facing the sliding guide rail, a flange connecting portion for rotationally matching with the flange is arranged on the sliding guide rail, the flange is rotationally connected to the flange connecting portion, and a rack meshing with the gear is arranged on the fixed guide rail; the split butt-jointed connecting rod comprises a pair of sub-connecting rods, and the pair of sub-connecting rods are detachably butt-jointed through a connector. The present invention improves the sliding synchronization of the slide rail, and at the same time solves the transportation inconvenience caused by the excessive length of the connecting rod and the problem of bending under force during transportation.

Description

Technical Field

[0001] The invention relates to the technical field of slide rails, and in particular to a synchronous slide rail with a split butt-jointed connecting rod. Background Art

[0002] A slide rail is a connector used to achieve linear movement of an appliance. It is commonly used on various drawers (such as refrigerator drawers, etc.) to achieve a sliding connection between the drawer and the cabinet. Depending on the application scenario, the slide rail can be designed into different structures such as two-section slide rails and three-section slide rails. The traditional three-section slide rail includes an inner rail, a middle rail and an outer rail. The inner rail is installed on the left and right sides of the drawer, and the outer rails are fixed on the side walls of the cabinet. The middle rail is slidably connected between the outer rail and the inner rail as a bearing rail to extend the range of motion of the drawer, and enable the inner rail and the middle rail to slide back and forth relative to the outer rail along the axis direction of the outer rail.

[0003] Usually, slide rails are manufactured by professional slide rail manufacturing factories and assembled into several components (usually slide rail components and connecting rod components). These components are then sold to slide rail application units (such as refrigerator manufacturers) for final assembly and installation in corresponding products.

[0004] Conventional slide rails in the prior art have the following problems: first, the synchronization of the slide rails on both sides of the conventional slide rails is poor when in use, and the slide rails are easily stuck during the sliding process; second, in the existing slide rails, the connecting rod in the connecting rod assembly is an integrated independent connecting rod, and the length of the connecting rod is relatively long. On the one hand, the excessively long connecting rod will cause inconvenience in transportation and easily cause bending due to force during transportation; on the other hand, the length of the independent connecting rod is fixed. When the drawer size error is large, the larger drawer size error cannot be compensated, thereby affecting the quality of the slide rail product. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a synchronous slide rail with a split butt-jointed connecting rod, aiming to improve the sliding synchronization of the slide rail and solve the transportation inconvenience and bending problem caused by the excessive length of the connecting rod during transportation. The specific technical solution is as follows:

[0006] A synchronous slide rail with a split butt-jointed connecting rod comprises a pair of parallel and spaced-apart slide rail assemblies and a connecting rod assembly connected between the pair of slide rail assemblies, the slide rail assembly comprises a fixed guide rail and a sliding guide rail that can slide along the fixed guide rail, the connecting rod assembly comprises a split butt-jointed connecting rod and gears arranged at both ends of the split butt-jointed connecting rod, a flange for connecting to the sliding guide rail is arranged on a side of the gear facing the sliding guide rail, a flange connecting portion for rotatably cooperating with the flange is arranged on the sliding guide rail, the flange is rotatably connected to the flange connecting portion, and a rack meshing with the gear is arranged on the fixed guide rail; the split butt-jointed connecting rod comprises a pair of sub-connecting rods, and the pair of sub-connecting rods are detachably connected via a connector.

[0007] In the above technical solution, the slide rail adopts a gear rack transmission structure to realize the synchronous sliding of the two sliding guide rails; at the same time, the split butt-jointed connecting rod in the connecting rod assembly is formed by a pair of sub-connecting rods connected by a connector, and is detachable. The split butt-jointed connecting rod can be disassembled and disassembled during transportation, thereby solving the transportation inconvenience caused by the excessive length of the connecting rod and the problem of bending under force during transportation.

[0008] As a preferred embodiment of the connector, the connector is a shaft section, both ends of which are respectively provided with coaxial square holes, and the end of the sub-connecting rod is provided with a square body, which is inserted and connected to the square hole.

[0009] The connection structure between the square hole of the connector and the upper body of the sub-connecting rod has good rigidity and can transmit a large torque, which is beneficial to ensure the synchronous sliding of the sliding guide rails on both sides.

[0010] As a further improvement of the present invention, the flange connecting portion includes a U-shaped slot and an elastic limiting hook arranged on one side of the U-shaped opening end of the U-shaped slot, and the flange is inserted into the U-shaped slot from one side of the U-shaped opening end of the U-shaped slot and is limited between the U-shaped slot and the elastic limiting hook.

[0011] By providing a U-shaped slot connected to the flange of the gear on the flange connection part of the sliding guide rail, the connecting rod assembly and the sliding rail assembly can be quickly plugged in; the provision of the elastic limiting hook allows the flange to be completely limited in the U-shaped slot, thereby achieving a relatively reliable relative rotation connection between the flange and the U-shaped slot. In addition, due to its elasticity, the elastic limiting hook can elastically deform to free the flange when the flange is assembled into the U-shaped slot, so that the flange can smoothly enter the U-shaped slot. After the flange enters the U-shaped slot, the elastic reset effect of the elastic limiting hook causes the head hook of the elastic limiting hook to return to its original position, thereby achieving reliable limiting of the flange. The above structure improves the convenience and efficiency of the slide rail assembly and realizes the quick assembly of the slide rail.

[0012] As a further improvement of the present invention, a flange connection block is installed on the sliding guide rail, and the flange connection part is arranged on the flange connection block.

[0013] The above-mentioned arrangement of the flange connection part on the flange connection block of the split structure can simplify the structure of the sliding guide rail and facilitate the manufacture of the sliding guide rail and the flange connection block.

[0014] As a preferred solution of the present invention, the flange connecting block includes a base plate, on which a U-shaped boss and the elastic limiting hook are provided, and on the U-shaped boss, a U-shaped groove is excavated along the U-shaped inner wall of the U-shaped boss.

[0015] Preferably, the elastic limiting hook is an elastic limiting hook of a cantilever structure, and the head of the elastic limiting hook is provided with an inclined surface which elastically moves away from the flange during assembly to facilitate the insertion of the flange into the U-shaped slot.

[0016] By arranging an elastic limiting hook of a cantilever structure on the bottom plate and arranging an inclined surface at the head of the elastic limiting hook for facilitating flange insertion and assembly, the convenience of flange plugging is further improved.

[0017] Preferably, the fixed guide rail comprises a bracket and an outer rail fixed on the bracket.

[0018] Preferably, the sliding guide rail comprises a middle rail slidably connected to the outer rail, an inner rail slidably connected to the middle rail, and the flange connection block is fixed on the inner rail.

[0019] Preferably, ball assemblies are respectively installed on the outer rail and the middle rail, and the ball assemblies include ball retainers, on which balls are arranged, and the middle rail is connected to the outer rail in a relative sliding manner through the ball assemblies, and the inner rail is connected to the middle rail in a relative sliding manner through the ball assemblies.

[0020] Preferably, the ball retainer is fixed to the outer rail and the middle rail respectively by gluing.

[0021] The arrangement of the ball bearing assembly in the above-mentioned slide rail reduces the sliding friction between the inner rail and the middle rail, and between the middle rail and the outer rail, thereby making it easier to draw the drawer. In addition, the adhesive fixing method of the ball bearing cage simplifies the connection structure between the ball bearing cage and the outer rail and the middle rail.

[0022] Furthermore, the fixed guide rail is also provided with a self-locking device for closing the slide rail, so as to realize reliable closing of the drawer.

[0023] The beneficial effects of the present invention are:

[0024] First, the present invention provides a synchronous slide rail with a split butt-jointed connecting rod. The slide rail adopts a gear rack transmission structure to realize the synchronous sliding of two sliding guide rails. At the same time, the split butt-jointed connecting rod in the connecting rod assembly is formed by a pair of sub-connecting rods butt-jointed through a connector, and the butt-jointed connecting rod is detachable. The split butt-jointed connecting rod can be disassembled and disassembled during transportation, thereby solving the transportation inconvenience caused by the excessive length of the connecting rod and the problem of bending under force during transportation.

[0025] Secondly, in the synchronous slide rail with a split docking connecting rod of the present invention, the connection structure between the square hole of the connector and the upper body of the sub-connecting rod has good rigidity and can transmit a large torque, which is beneficial to ensure the synchronous sliding of the sliding guide rails on both sides.

[0026] Third, a synchronous slide rail of the present invention has a split docking connecting rod. By providing a U-shaped groove connected to the flange of the gear on the flange connection part of the sliding guide rail, the connecting rod assembly and the slide rail assembly can be quickly plugged in. The setting of the elastic limiting hook allows the flange to be completely limited in the U-shaped groove, thereby achieving a more reliable relative rotation connection between the flange and the U-shaped groove.

[0027] Fourth, in the synchronous slide rail with a split docking connecting rod of the present invention, the elastic limit hook has elasticity, so that when the flange is assembled into the U-shaped slot, it can make way for the flange through elastic deformation, so that the flange can smoothly enter the U-shaped slot. After the flange enters the U-shaped slot, the elastic reset effect of the elastic limit hook makes the head hook of the elastic limit hook return to its original position, thereby realizing reliable limit of the flange. The above structure improves the convenience and efficiency of the slide rail assembly, and realizes the quick assembly of the slide rail.

[0028] Fifth, in the synchronous slide rail with a split docking connecting rod of the present invention, the flange connection part is arranged on the flange connection block of the split structure, which can simplify the structure of the slide rail and facilitate the manufacture of the slide rail and the flange connection block.

[0029] Sixth, the synchronous slide rail with a split docking connecting rod of the present invention further improves the convenience of flange plug-in by arranging an elastic limiting hook of a cantilever structure on the bottom plate and arranging an inclined surface at the head of the elastic limiting hook to facilitate flange insertion and assembly.

[0030] Seventh, the present invention provides a synchronous slide rail with a split docking connecting rod. The arrangement of the ball assembly in the slide rail reduces the sliding friction between the inner rail and the middle rail, and between the middle rail and the outer rail, thereby making it easier to pull out and draw the drawer. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a synchronous slide rail with a split butt-jointed connecting rod of the present invention;

[0032] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the slide rail assembly;

[0033] Figure 3 yes Figure 2 A schematic diagram of a three-dimensional structure in which the flange of the gear is inserted into the U-shaped slot;

[0034] Figure 4 It is a three-dimensional structural schematic diagram of the flange connection block;

[0035] Figure 5 It is a schematic diagram of the three-dimensional structure of the gear.

[0036] In the figure: 1. slide rail assembly, 2. connecting rod assembly, 3. fixed guide rail, 4. sliding guide rail, 5. split docking connecting rod, 6. gear, 7. flange, 8. flange connection, 9. U-shaped slot, 10. elastic limit hook, 11. rack, 12. flange connection block, 13. bottom plate, 14. U-shaped boss, 15. inclined plane, 16. bracket, 17. outer rail, 18. middle rail, 19. inner rail, 20. ball assembly, 21. ball retainer, 22. ball, 23. self-locking device, 24. sub-connecting rod, 25. connector. DETAILED DESCRIPTION

[0037] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0038] like Figures 1 to 5 The figure shows an embodiment of a synchronous slide rail with a split docking connecting rod of the present invention, comprising a pair of parallel and spaced slide rail assemblies 1 and a connecting rod assembly 2 connected between the pair of slide rail assemblies 1, the slide rail assembly 1 comprising a fixed guide rail 3 and a sliding guide rail 4 that can slide along the fixed guide rail 3, the connecting rod assembly 2 comprising a split docking connecting rod 5 and gears 6 arranged at both ends of the split docking connecting rod 5, a flange 7 for connecting to the sliding guide rail 4 is arranged on the side of the gear 6 facing the sliding guide rail 4, a flange connecting portion 8 for rotatably cooperating with the flange 7 is arranged on the sliding guide rail 4, the flange 7 is rotatably connected to the flange connecting portion 8, and a rack 11 meshing with the gear 6 is arranged on the fixed guide rail 3; the split docking connecting rod 5 comprises a pair of sub-connecting rods 24, and the pair of sub-connecting rods 24 are detachably docked through a connector 25.

[0039] In the above technical solution, the slide rail adopts a gear rack transmission structure to realize the synchronous sliding of the two sliding guide rails 4; at the same time, the split docking connecting rod 5 in the connecting rod assembly 2 is formed by a pair of sub-connecting rods 24 docked through a connector 25, and is detachable. The split docking connecting rod 24 can be disassembled and disassembled during transportation, thereby solving the transportation inconvenience caused by the excessive length of the connecting rod and the problem of bending under force during transportation.

[0040] As a preferred solution of the connector 25, the connector 25 is a shaft section, and coaxial square holes are respectively provided at both ends of the shaft section. A square body is provided at the end of the sub-connecting rod 24, and the square body is inserted and connected to the square hole.

[0041] The connection structure between the square hole of the connector 25 and the upper body of the sub-connecting rod 24 has good rigidity and can transmit a large torque, which is beneficial to ensure the synchronous sliding of the sliding guide rails 4 on both sides.

[0042] As a further improvement of this embodiment, the flange connecting portion 8 includes a U-shaped slot 9 and an elastic limiting hook 10 arranged on one side of the U-shaped opening end of the U-shaped slot 9, and the flange 7 is inserted into the U-shaped slot 9 from one side of the U-shaped opening end of the U-shaped slot 9 and is limited between the U-shaped slot 9 and the elastic limiting hook 10.

[0043] By setting a U-shaped slot 9 connected to the flange 7 of the gear 6 on the sliding guide rail 4, the connecting rod assembly 2 and the slide rail assembly 1 can be quickly plugged in; the setting of the elastic limiting hook 10 allows the flange 7 to be completely limited in the U-shaped slot 9, thereby realizing a relatively reliable relative rotation connection between the flange 7 and the U-shaped slot 9. In addition, due to its elasticity, the elastic limiting hook 10 can elastically deform to let the flange 7 go when the flange 7 is assembled into the U-shaped slot 9, so that the flange 7 can smoothly enter the U-shaped slot 9. After the flange 7 enters the U-shaped slot 9, the elastic reset effect of the elastic limiting hook 10 makes the head hook of the elastic limiting hook 10 return to its original position, thereby realizing reliable limiting of the flange 7. The above structure improves the convenience and efficiency of the slide rail assembly and realizes the quick assembly of the slide rail.

[0044] As a further improvement of this embodiment, a flange connection block 12 is installed on the sliding guide rail 4 , and the flange connection part 8 is arranged on the flange connection block 12 .

[0045] The above-mentioned arrangement of the flange connection portion 8 on the flange connection block 12 of the split structure can simplify the structure of the sliding guide rail 4 and facilitate the manufacture of the sliding guide rail 4 and the flange connection block 12 .

[0046] As a preferred solution of this embodiment, the flange connecting block 12 includes a base plate 13, on which a U-shaped boss 14 and the elastic limiting hook 10 are provided, and on the U-shaped boss 14, the U-shaped groove 9 is excavated along the U-shaped inner wall of the U-shaped boss 14.

[0047] Preferably, the elastic limiting hook 10 is an elastic limiting hook of a cantilever structure, and the head of the elastic limiting hook 10 is provided with an inclined surface 15 which elastically moves away from the flange 7 during assembly to facilitate the insertion of the flange 7 into the U-shaped slot 9 .

[0048] By arranging the elastic limiting hook 10 of the cantilever structure on the bottom plate 13 and arranging the inclined surface 15 at the head of the elastic limiting hook 10 for facilitating the insertion and assembly of the flange 7, the convenience of the flange 7 is further improved.

[0049] Preferably, the fixed guide rail 3 includes a bracket 16 and an outer rail 17 fixed on the bracket 16 .

[0050] Preferably, the sliding guide rail 4 includes a middle rail 18 slidably connected to the outer rail 17 , and an inner rail 19 slidably connected to the middle rail 18 , and the flange connection block 12 is fixed on the inner rail 19 .

[0051] Preferably, a ball assembly 20 is installed on the outer rail 17 and the middle rail 18 respectively, and the ball assembly 20 includes a ball retainer 21, and the ball retainer 21 is provided with balls 22. The middle rail 18 is connected to the outer rail 17 in a relative sliding manner through the ball assembly 20, and the inner rail 19 is connected to the middle rail 18 in a relative sliding manner through the ball assembly 20.

[0052] Preferably, the ball retainer 21 is fixed to the outer rail 17 and the middle rail 18 respectively by gluing.

[0053] The arrangement of the ball assembly 20 in the above-mentioned slide rail reduces the sliding friction between the inner rail 19 and the middle rail 18, and between the middle rail 18 and the outer rail 17, thereby making it easier to draw the drawer. In addition, the adhesive fixing method of the ball retainer 21 simplifies the connection structure between the ball retainer 21 and the outer rail 17 and the middle rail 18.

[0054] Furthermore, the fixed guide rail 3 is also provided with a self-locking device 23 for closing the slide rail, so as to realize reliable closing of the drawer.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A synchronous slide rail with a split butt-jointed connecting rod, characterized in that: The invention comprises a pair of parallel and spaced slide rail assemblies and a connecting rod assembly connected between the pair of slide rail assemblies, wherein the slide rail assembly comprises a fixed guide rail and a sliding guide rail that can slide along the fixed guide rail, the connecting rod assembly comprises a split butt-jointed connecting rod and gears arranged at both ends of the split butt-jointed connecting rod, a flange for connecting with the sliding guide rail is arranged on a side of the gear facing the sliding guide rail, a flange connecting part for rotatably cooperating with the flange is arranged on the sliding guide rail, the flange is rotatably connected to the flange connecting part, and a gear meshing with the gear is arranged on the fixed guide rail. The split docking connecting rod comprises a pair of sub-connecting rods, and the pair of sub-connecting rods are detachably docked through a connector; the connector is a section of an axle rod, and coaxial square holes are respectively provided at both ends of the section of the axle rod, and a square body is provided at the end of the sub-connecting rod, and the square body is inserted and connected to the square hole; the flange connecting part comprises a U-shaped slot and an elastic limiting hook arranged on one side of the U-shaped opening end of the U-shaped slot, and the flange is inserted into the U-shaped slot from one side of the U-shaped opening end of the U-shaped slot and is limited between the U-shaped slot and the elastic limiting hook.

2. A synchronous slide rail with a split butt-jointed connecting rod according to claim 1, characterized in that: A flange connection block is installed on the sliding guide rail, and the flange connection part is arranged on the flange connection block.

3. A synchronous slide rail with a split butt-jointed connecting rod according to claim 2, characterized in that: The flange connection block comprises a bottom plate, on which a U-shaped boss and the elastic limiting hook are arranged, and on the U-shaped boss, a U-shaped groove is excavated along the U-shaped inner wall of the U-shaped boss.

4. The synchronous slide rail with split connecting rod according to claim 1, characterized in that: The elastic limiting hook is an elastic limiting hook of a cantilever structure, and the head of the elastic limiting hook is provided with an inclined surface which elastically moves away from the flange during assembly to facilitate the flange to be inserted into the U-shaped slot.

5. The synchronous slide rail with split butt-jointed connecting rod according to claim 2, characterized in that: The fixed guide rail comprises a bracket and an outer rail fixed on the bracket.

6. A synchronous slide rail with a split butt-jointed connecting rod according to claim 5, characterized in that: The sliding guide rail comprises a middle rail slidably connected to the outer rail, and an inner rail slidably connected to the middle rail, and the flange connection block is fixed on the inner rail.

7. A synchronous slide rail with a split butt-jointed connecting rod according to claim 6, characterized in that: The outer rail and the middle rail are respectively installed with ball assemblies, the ball assemblies include ball retainers, the ball retainers are provided with balls, the middle rail is connected to the outer rail in relative sliding connection through the ball assemblies, and the inner rail is connected to the middle rail in relative sliding connection through the ball assemblies.

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