Double-unfolding-lock structure with linkage device

Abstract

The utility model discloses a double-unfolding lock structure with a linkage device, which ensures that an operator needs to manually unlock a locking structure when pushing into an inner rail, prevents the operator from violently assembling and prolongs the service life of the rail. The first rail is an inner rail and is used for being fixedly connected with a drawer; the second rail is a middle rail or an outer rail; a first locking assembly, a transmission assembly and a second locking assembly are sequentially installed in the middle of the outer surface, away from the drawer, of the first rail, the surface, facing the first rail, of the second rail is concaved inwards to form a guide rail groove, and the first rail is embedded in the guide rail groove. And an interval space is formed between the outer surface of the first rail and the inner surface of the second rail and is used for placing a first locking assembly, a transmission assembly and a second locking assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of slide rail structures, in particular to a double-expanding lock structure with a linkage device. Background Art

[0002] When a vertical cabinet is assembled, the equipment is installed in the drawer. To facilitate the drawer's complete extension out of the cabinet's interior, a two- or three-section rail is installed between the drawer and the cabinet for assembly. During actual use, when a worker disengages the inner rail from the middle or outer rail fixed to the drawer, a locking mechanism is required to prevent accidental detachment of the inner rail from the middle or outer rail, potentially causing the drawer and cabinet to detach. Existing locking mechanisms all use a single-type locking structure. During actual assembly, operators typically use a strong force to directly push the inner rail into the middle or outer rail. This force can cause significant damage to the rails. In practice, neither increased lubrication nor material replacement can reliably prevent damage to the rails from the strong impact. Therefore, it is necessary to provide a locking mechanism when the operator pushes the inner rail into the middle or outer rail, requiring the operator to unlock the lock before reliably pushing the inner rail into the middle rail. However, how to configure this locking mechanism is an urgent issue for slide rail designers. Summary of the Invention

[0003] In response to the above problems, the present invention provides a double-expanding lock structure with a linkage device, which requires the operator to manually unlock the locking structure when pushing the inner rail, thereby preventing the operator from violent assembly and increasing the service life of the rail.

[0004] A double-expanding lock structure with a linkage device, characterized in that it includes:

[0005] The first rail is an inner rail used for fixing to the drawer;

[0006] The second rail, which is the middle rail or outer rail;

[0007] A first locking assembly, a transmission assembly, and a second locking assembly are sequentially mounted on a middle portion of the first rail away from an outer surface of the drawer; a surface of the second rail facing the first rail is concave to form a guide rail groove, and the first rail is embedded in the guide rail groove; a spacing space is provided between the outer surface of the first rail and the inner surface of the second rail, and the spacing space is used to accommodate the first locking assembly, the transmission assembly, and the second locking assembly;

[0008] The first locking assembly and the second locking assembly each include a connecting rod and a compression spring. The length of each connecting rod is contoured and concave below the center position to form a locking groove. A locking protrusion is provided at the front end of the second rail corresponding to the spacing space. Under the pressure of the compression spring, when the first locking assembly or the second locking assembly passes through the locking protrusion, the locking protrusion is embedded in the groove to complete the locking action.

[0009] The transmission assembly includes a transmission connecting rod, the rear end lower part of the connecting rod of the first locking assembly presses the front end upper part of the transmission connecting rod, and the front end lower part of the connecting rod of the second locking assembly presses the rear end upper part of the transmission connecting rod. The front end of the connecting rod of the first locking assembly is lifted, driving the locking grooves of the two sets of connecting rods to rise synchronously, thereby completing the unlocking with the locking protrusion block.

[0010] It is further characterized by:

[0011] The first locking assembly includes a first connecting rod and a first compression spring. The first connecting rod is connected to the first rail via a first pivot shaft near the rear end thereof. A first waist-shaped adjustment groove is provided in the middle portion of the length direction of the first connecting rod. A first convex limit block is fixedly provided on the first rail and inserted into the first waist-shaped adjustment groove. The first compression spring is fixedly mounted on the outer surface of the first rail, and the exposed compression rod end thereof presses against a corresponding position on the upper surface of the first connecting rod. A first locking groove is provided on the first connecting rod directly below the first waist-shaped adjustment groove.

[0012] The first locking groove is located in the front middle of the first rail in the longitudinal direction;

[0013] The second locking assembly includes a second connecting rod and a second compression spring. The rear end of the second connecting rod is connected to the first rail via a second pivot shaft. A second waist-shaped adjustment groove is provided at the middle portion of the length direction of the second connecting rod. A second convex limit block is fixed to the first rail and inserted into the second waist-shaped adjustment groove. The second compression spring is fixed to the outer surface of the first rail, and its exposed compression rod end presses the corresponding position of the upper surface of the second connecting rod. The second connecting rod is provided with a second locking groove at a position directly below the second waist-shaped adjustment groove.

[0014] The transmission assembly includes a transmission connecting rod, the transmission connecting rod being connected to the outer surface of the first rail via a second pivot shaft, the front end of the transmission connecting rod being higher than the rear end of the transmission connecting rod, and ensuring that the positions of the connecting rods of the two sets of locking assemblies are the same in the locked state;

[0015] The height of the transmission connecting rod is higher than that of the locking protrusion to ensure that no interference occurs;

[0016] The lower portion of the rear end protrusion of the first connecting rod presses the upper front end of the transmission connecting rod, and the lower front end of the second connecting rod presses the upper rear end of the transmission connecting rod. When the first rail is in the advancing state, the second locking groove and the first locking groove sequentially lock the locking protrusion.

[0017] A mounting block is fixedly provided on the inner surface of the front end of the second rail, and the locking protrusion block is provided at a height position of the mounting block corresponding to the first locking groove and the second locking groove.

[0018] After adopting the above technical solution, when the first rail needs to be separated from the second rail, the operator manually lifts the front end of the connecting rod of the first locking assembly, and then pulls the drawer so that the two sets of locking grooves of the first slide rail pass over the locking protrusions until the first rail is separated from the second rail; when the first rail needs to be inserted into the second rail, the operator inserts the first rail into the second rail, and the locking grooves and locking protrusions of the second locking assembly complete the locking, so that the operator needs to manually lift the front end of the corresponding connecting rod of the second locking assembly or the operator needs to manually lift the front end of the first locking assembly The front end of the corresponding connecting rod can be unlocked. During this process, the operator cannot use great force to assemble the track because both hands are placed under the track to unlock. The operator will take into account the safety of his hands and will reasonably push the first track into the second track until both sets of locking grooves pass through the locking protrusions. At this time, most of the length of the first track has penetrated into the second track, and the operator only needs to push lightly to complete the track installation; it requires the operator to manually unlock the locking structure when pushing in the inner rail, which prevents the operator from violent assembly and increases the service life of the track. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-section rail structure used for cabinet and drawer assembly of the utility model;

[0020] Figure 2 This is an enlarged three-dimensional assembly diagram of the second rail, the first locking assembly, the transmission assembly, and the second locking assembly of the present invention;

[0021] Figure 3 This is an assembly perspective view of the first rail, the first locking assembly, the transmission assembly, and the second locking assembly of the present invention;

[0022] The names corresponding to the serial numbers in the figure are as follows:

[0023] Drawer 100, cabinet 110;

[0024] First rail 10, second rail 20, mounting block 21, locking protrusion block 201, guide rail groove 22, first locking assembly 30, first connecting rod 31, rear end protrusion rod 311, first compression spring 32, first pivot axis 33, first waist-shaped adjustment groove 34, first external protrusion limit block 35, first locking groove 36, transmission assembly 40, transmission connecting rod 41, second pivot axis 42, second locking assembly 50, second connecting rod 51, second compression spring 52, second pivot axis 53, second waist-shaped adjustment groove 54, second external protrusion limit block 55, second locking groove 56, spacing space 60. DETAILED DESCRIPTION

[0025] Double deployment lock structure with linkage, see Figure 1-Figure 3 , which includes:

[0026] The first rail 10 is an inner rail for being fixedly connected to the drawer 100;

[0027] The second rail 20, which is the middle rail or the outer rail;

[0028] A first locking assembly 30, a transmission assembly 40, and a second locking assembly 50 are sequentially mounted on a central portion of the outer surface of the first rail 10 away from the drawer 100. A guide rail groove 22 is formed inwardly on the surface of the second rail 20 facing the first rail 10 and is provided with a steel ball structure. The first rail 10 is embedded in the guide rail groove 22. A spacing space 60 is provided between the outer surface of the first rail 10 and the inner surface of the second rail 20. The spacing space 60 is used to accommodate the first locking assembly 30, the transmission assembly 40, and the second locking assembly 50.

[0029] The first locking assembly 30 and the second locking assembly 50 both include a connecting rod and a compression spring. The length of each connecting rod is contoured and concave below the center position to form a locking groove. A locking protrusion is provided at the front end of the second rail 20 corresponding to the spacing space. Under the pressure of the compression spring, when the first locking assembly 30 and the second locking assembly 50 pass through the locking protrusion, the locking protrusion is embedded in the groove to complete the locking action.

[0030] The transmission assembly 40 includes a transmission connecting rod 41. The lower rear end portion of the connecting rod of the first locking assembly 30 is pressed against the upper front end portion of the transmission connecting rod 41. The lower front end portion of the connecting rod of the second locking assembly 50 is pressed against the upper rear end portion of the transmission connecting rod 41. The front end of the connecting rod of the first locking assembly 30 is lifted, driving the locking grooves of the two sets of connecting rods to rise synchronously, thereby completing the unlocking with the locking protrusion block 201.

[0031] In a specific embodiment, the track is a three-section track;

[0032] The first locking assembly 30 includes a first connecting rod 31 and a first compression spring 32. The first connecting rod 31 is connected to the first rail 10 near the rear end via a first pivot shaft 33. A first waist-shaped adjustment groove 34 is provided in the middle of the length direction of the first connecting rod 31, and a first protruding limit block 35 fixed to the first rail 10 is inserted into the first waist-shaped adjustment groove 34. The first compression spring 32 is fixed to the outer surface of the first rail 10, and its exposed pressing rod end penetrates into the embedding groove on the middle upper surface of the first connecting rod 31 to complete the pressing of the first connecting rod 31. A first locking groove 36 is provided on the first connecting rod 31 directly below the first waist-shaped adjustment groove 34.

[0033] The first locking groove 36 is located in the longitudinal direction of the first rail 10 in the middle of the longitudinal direction, ensuring that most of the length of the first rail 10 has been inserted into the second rail 20 after unlocking during insertion.

[0034] The second locking assembly 50 includes a second connecting rod 51 and a second compression spring 52. The rear end of the second connecting rod 51 is connected to the first rail 10 via a second pivot shaft 53. A second waist-shaped adjustment groove 54 is provided in the middle of the length direction of the second connecting rod 51. A second protruding stopper 55 fixed to the first rail is inserted into the second waist-shaped adjustment groove 54. The second compression spring 52 is fixed to the outer surface of the first rail 10, and its exposed compression rod end penetrates into the embedding groove on the middle upper surface of the second connecting rod 51 to complete the compression of the second connecting rod 51. A second locking groove 56 is provided on the second connecting rod 51 directly below the second waist-shaped adjustment groove 54.

[0035] The transmission assembly 40 includes a transmission connecting rod 41, which is connected to the outer surface of the first rail 10 via a second pivot shaft 42. The front end of the transmission connecting rod 41 is higher than the rear end of the transmission connecting rod. In the locked state, the position and shape of the connecting rods of the two sets of locking assemblies are ensured to be the same.

[0036] The height of the transmission connecting rod 41 is higher than the height of the locking protrusion 201 to ensure that no interference occurs;

[0037] The lower part of the rear end protrusion rod 311 of the first connecting rod 31 presses the upper front end of the transmission connecting rod 41, and the lower front end of the second connecting rod 51 presses the upper rear end of the transmission connecting rod 41. When the first rail 10 is in the advanced state, the second locking groove 56 and the first locking groove 36 lock the locking protrusion block 201 in sequence.

[0038] In specific implementation, a mounting block 21 is fixedly provided on the inner surface of the front end of the second rail 20 , and a locking protrusion 201 is provided at a height position of the mounting block 21 corresponding to the first locking groove 36 and the second locking groove 56 .

[0039] In specific implementation, the first connecting rod is provided with arc guides on both sides corresponding to the first locking groove 36, and the second connecting rod is provided with arc guides on both sides corresponding to the second locking groove 56, to ensure that the locking protrusion block 201 enters the locking groove smoothly along the arc guide.

[0040] The working principle is as follows: when the first rail needs to be separated from the second rail, the operator manually lifts the front end of the connecting rod of the first locking component, and then pulls the drawer so that the two sets of locking grooves of the first slide rail pass over the locking protrusions until the first rail is separated from the second rail; when the first rail needs to be inserted into the second rail, the operator inserts the first rail into the second rail, and the locking grooves and locking protrusions of the second locking component complete the locking, so that the operator needs to manually lift the front end of the corresponding connecting rod of the second locking component or the operator needs to manually lift the front end of the corresponding connecting rod of the first locking component to complete the unlocking. During this process, the operator cannot use great force to assemble the rails because both hands are placed under the rails to unlock. The operator will take into account the safety of his hands and will reasonably push the first rail into the second rail until both sets of locking grooves pass through the locking protrusions. At this time, most of the length of the first rail has penetrated into the second rail, and the operator only needs to push lightly to complete the rail installation; it requires the operator to manually unlock the locking structure when pushing the inner rail in, which prevents the operator from violent assembly and improves the service life of the rails.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0042] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Double-expanding lock structure with linkage device, characterized in that: It includes: The first rail is an inner rail used for fixing to the drawer; The second rail, which is the middle rail or outer rail; A first locking assembly, a transmission assembly, and a second locking assembly are sequentially mounted on a middle portion of the first rail away from an outer surface of the drawer; a surface of the second rail facing the first rail is concave to form a guide rail groove, and the first rail is embedded in the guide rail groove; a spacing space is provided between the outer surface of the first rail and the inner surface of the second rail, and the spacing space is used to accommodate the first locking assembly, the transmission assembly, and the second locking assembly; The first locking assembly and the second locking assembly each include a connecting rod and a compression spring. The length of each connecting rod is contoured and concave below the center position to form a locking groove. A locking protrusion is provided at the front end of the second rail corresponding to the spacing space. Under the pressure of the compression spring, when the first locking assembly or the second locking assembly passes through the locking protrusion, the locking protrusion is embedded in the groove to complete the locking action. The transmission assembly includes a transmission connecting rod, the rear end lower part of the connecting rod of the first locking assembly presses the front end upper part of the transmission connecting rod, and the front end lower part of the connecting rod of the second locking assembly presses the rear end upper part of the transmission connecting rod. The front end of the connecting rod of the first locking assembly is lifted, driving the locking grooves of the two sets of connecting rods to rise synchronously, thereby completing the unlocking with the locking protrusion block.

2. The double-expandable lock structure with a linkage device according to claim 1, characterized in that: The first locking assembly includes a first connecting rod and a first compression spring. The first connecting rod is connected to the first rail through a first pivot shaft near the rear end. A first waist-shaped adjustment groove is provided in the middle of the length direction of the first connecting rod. The first rail is fixed with a first convex limit block inserted into the first waist-shaped adjustment groove. The first compression spring is fixed to the outer surface of the first rail, and its exposed compression rod end presses the corresponding position of the upper surface of the first connecting rod. The first connecting rod is provided with a first locking groove at a position directly below the first waist-shaped adjustment groove.

3. The double-expandable lock structure with a linkage device according to claim 2, characterized in that: The lengthwise position of the first locking groove is located in the front middle portion of the lengthwise direction of the first rail.

4. The double-expandable lock structure with a linkage device according to claim 2, characterized in that: The second locking assembly includes a second connecting rod and a second compression spring. The rear end of the second connecting rod is connected to the first rail through a second pivot shaft. A second waist-shaped adjustment groove is provided in the middle of the length direction of the second connecting rod. The first rail is fixed with a second convex limit block inserted into the second waist-shaped adjustment groove. The second compression spring is fixed to the outer surface of the first rail, and its exposed pressing rod end presses the corresponding position of the upper surface of the second connecting rod. The second connecting rod is provided with a second locking groove at a position directly below the second waist-shaped adjustment groove.

5. The double-expandable lock structure with a linkage device according to claim 4, characterized in that: The transmission assembly includes a transmission connecting rod, which is connected to the outer surface of the first rail through a second pivot shaft. The front end of the transmission connecting rod is higher than the rear end of the transmission connecting rod, ensuring that the position states of the connecting rods of the two sets of locking assemblies are the same shape in the locked state.

6. The double-expandable lock structure with a linkage device according to claim 5, characterized in that: The height of the transmission connecting rod is higher than the height of the locking protrusion block.

7. The double-expandable lock structure with a linkage device according to claim 5, characterized in that: The lower part of the rear end protrusion rod of the first connecting rod presses the upper front end part of the transmission connecting rod, and the lower front end part of the second connecting rod presses the upper rear end part of the transmission connecting rod. When the first rail is pushed, the second locking groove and the first locking groove lock the locking protrusion block in sequence.

8. The double-expandable lock structure with a linkage device according to claim 1, characterized in that: A mounting block is fixedly provided on the inner surface of the front end of the second rail, and the locking protrusion block is provided at a height position of the mounting block corresponding to the first locking groove and the second locking groove.

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