Three-section linkage hidden rail

Abstract

The utility model relates to the technical field of drawer sliding rails, in particular to a three-section linkage hidden rail which is characterized by comprising a fixed rail, a middle rail, a movable rail, a fixed rail rack assembly, a damping device and a U-shaped bead frame, the fixed rail rack assembly is arranged on the fixed rail in a sliding mode, the fixed rail is fixedly connected with the damping device, and the middle rail is fixedly connected with the U-shaped bead frame. The damping device is connected with the movable rail, the U-shaped bead frame is arranged on the middle rail in a sliding mode, the movable rail is arranged on the U-shaped bead frame in a sliding mode, and compared with the prior art, the sliding door has the advantages of being hidden in design, capable of saving space, smooth, silent and synchronous in pushing and pulling.

Description

Technical Field

[0001] The utility model relates to the technical field of drawer slide rails, and more particularly to a three-section linked hidden rail. Background Art

[0002] Concealed slides are widely used in furniture drawers and other applications due to their aesthetics and space-saving advantages. Three-section concealed slides are a common type. They typically consist of an outer rail, a middle rail, and an inner rail, which slide relative to each other using ball bearings or rollers, allowing drawers to be smoothly extended and inserted. This design allows for greater clearance when the drawer is opened, making it easier to access items. When closed, the drawer can be completely concealed within the furniture, preserving its appearance.

[0003] However, the three-stage concealed slides currently on the market also have some drawbacks. First, they lack smoothness and may become stuck during use. Second, they are prone to noise, with components colliding during closing and making loud noises. Stability also needs to be improved, with the multi-stage structure prone to loud operating noise and poor stability. They also have limited load-bearing capacity, with deformation under heavy loads potentially affecting their service life. Furthermore, they have high installation requirements, with improper installation affecting performance and high costs, limiting their wider application. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a three-section linked hidden rail.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A three-section linkage hidden rail, characterized by comprising a fixed rail, a middle rail, a movable rail, a fixed rail rack assembly, a damping device, and a U-shaped bead rack;

[0007] The fixed rail is fixedly connected to the damping device, and the damping device is fixedly connected to the movable rail;

[0008] The fixed rail rack assembly is slidably connected to the fixed rail, and the fixed rail is provided with a fixed rail gear assembly;

[0009] The fixed rail rack assembly is provided with a first roller, a second roller, a third roller and a fourth roller, wherein the first roller contacts the inner surface of the middle rail and the outer surface of the fixed rail;

[0010] The second roller is in contact with the inner surface of the middle rail and the inner surface of the fixed rail;

[0011] The third roller is in contact with the inner surface of the middle rail and the inner surface of the fixed rail;

[0012] The fourth roller is in contact with the inner surface of the middle rail and the inner surface of the fixed rail;

[0013] The U-shaped bead rack is slidably connected to the middle rail, and the movable rail is slidably connected to the U-shaped bead rack;

[0014] The fixed rail gear assembly consists of a fixed rail angle code, rivets and a fixed rail bottom gear.

[0015] In one embodiment, a buckle is provided on the fixed rail, and a slot for cooperating with the buckle is provided on the damping device, so as to realize a buckle connection between the fixed rail and the damping device;

[0016] The movable rail is provided with an eccentric nail, and the damping device is provided with a limiting hole used in conjunction with the eccentric nail, so as to connect the movable rail with the damping device.

[0017] In one embodiment, the fixed rail is provided with a limit block, and the limit block is used to limit the sliding stroke of the fixed rail rack assembly on the fixed rail.

[0018] In one embodiment, the fixed rail rack assembly is provided with a first rack and a second rack, and the first rack is engaged with the bottom gear of the fixed rail to enable the fixed rail rack assembly to achieve a high-pair connection with the fixed rail.

[0019] In one embodiment, a gear bearing bracket assembly is provided on the middle rail, and the gear bearing bracket assembly includes a gear and a gear bearing bracket;

[0020] The gear is engaged with the second rack, and is used for realizing a high-pair connection between the gear support bracket assembly and the fixed rail rack assembly.

[0021] In one embodiment, the U-shaped bead rack is provided with a ball and a fifth roller, and the ball contacts the outer surface of the middle rail and the inner surface of the movable rail;

[0022] The fifth roller contacts the outer surface of the middle rail and the inner surface of the movable rail.

[0023] In one embodiment, a movable rail rack is provided on the movable rail, and the gear is engaged with the movable rail rack to realize a high-pair connection between the movable rail rack and the gear bearing bracket assembly.

[0024] In one embodiment, the gear is engaged with the movable rail rack and the second rack simultaneously, so as to synchronize the sliding strokes of the movable rail and the fixed rail rack assembly on the gear support bracket assembly.

[0025] In one embodiment, during the sliding stroke of the fixed rail rack assembly, the gear is engaged with the second rack, and the fixed rail bottom gear is engaged with the first rack, so that the gear and the fixed rail bottom gear can achieve synchronous rotation.

[0026] In one embodiment, a head rubber is provided on the movable rail, a plug and an anti-sinking bearing are provided on the head rubber, and the head rubber is also provided with a plug guide groove and two hole positions.

[0027] The above three-section linkage hidden rail has the following beneficial effects:

[0028] First, it has the advantages of hidden design, space saving, smooth and silent operation, and synchronous push and pull;

[0029] Secondly, the movable rail, the middle rail and the fixed rail can slide synchronously, which effectively reduces the noise when the drawer is pulled out, making the sliding of the slide rail quieter. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is an axonometric drawing of a three-section linkage hidden rail in this embodiment;

[0031] Figure 2 This is a front view of a three-section linkage hidden rail in this embodiment;

[0032] Figure 3 is a schematic structural diagram of the fixed rail gear assembly in this embodiment;

[0033] Figure 4 is a front view of the fixed rail rack assembly in this embodiment;

[0034] Figure 5 is a front view of the fixed rail in this embodiment;

[0035] Figure 6 Schematic diagram of the structure of the damping device in this embodiment;

[0036] Figure 7 is a bottom view of the movable rail in this embodiment;

[0037] Figure 8 Schematic diagram of the structure of the head glue in this embodiment;

[0038] Figure 9 is a schematic structural diagram of the fixed rail gear assembly in this embodiment;

[0039] Figure 10 Schematic diagram of the structure of the gear bearing bracket assembly in this embodiment;

[0040] Figure 11 It is a structural diagram of the U-shaped bead rack in this embodiment.

[0041] In the figure: 1. Fixed rail; 11. Fixed rail gear assembly; 111. Fixed rail angle code; 112. Rivet; 113. Fixed rail bottom gear; 12. Buckle; 13. Limit block; 2. Middle rail; 21. Gear bearing bracket assembly; 211. Gear; 212. Gear bearing bracket; 3. Movable rail; 31. Eccentric nail; 32. Movable rail rack; 33. Head glue; 331. Pin; 332. Anti-sinking shaft; 333. Pin guide groove; 334. Two-hole position clamping; 4. Fixed rail rack assembly; 41. First roller; 42. Second roller; 43. Third roller; 44. Fourth roller; 45. First rack; 46. Second rack; 5. Damping device; 51. Slot; 52. Limit hole; 6. U-shaped bead rack; 61. Ball; 62. Fifth roller. DETAILED DESCRIPTION

[0042] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, unless otherwise specifically defined.

[0045] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0047] A three-section linkage hidden track, such as Figure 2 As shown, it includes a fixed rail 1, a middle rail 2, a movable rail 3, a fixed rail rack assembly 4, a damping device 5, and a U-shaped bead rack 6;

[0048] like Figure 2 As shown, the fixed rail 1 is fixedly connected to the damping device 5, and the damping device 5 is fixedly connected to the movable rail 3;

[0049] like Figure 2 As shown, the fixed rail rack assembly 4 is slidably connected to the fixed rail 1, and the fixed rail 1 is provided with a fixed rail gear assembly 11;

[0050] like Figure 4 As shown, the fixed rail rack assembly 4 is provided with a first roller 41, a second roller 42, a third roller 43 and a fourth roller 44;

[0051] like Figure 2 Figure 4 As shown: the first roller 41 is in contact with the inner surface of the middle rail 2 and the outer surface of the fixed rail 1;

[0052] like Figure 2 Figure 4 As shown, the second roller 42 is in contact with the inner surface of the middle rail 2 and the inner surface of the fixed rail 1;

[0053] like Figure 2 Figure 4 As shown, the third roller 43 is in contact with the inner surface of the middle rail 2 and the inner surface of the fixed rail 1;

[0054] like Figure 2 Figure 4 As shown, the fourth roller 44 is in contact with the inner surface of the middle rail 2 and the inner surface of the fixed rail 1;

[0055] like Figure 2 As shown, the U-shaped bead rack 6 is slidably connected to the middle rail 2, and the movable rail 3 is slidably connected to the U-shaped bead rack 6;

[0056] like Figure 2 Figure 3As shown, the fixed rail gear assembly 11 is composed of a fixed rail angle code 111 , a rivet 112 and a fixed rail bottom gear 113 .

[0057] Through the above design, in one embodiment, the benefit is that the U-shaped bead rack 6 is placed between the middle rail 2 and the movable rail 3, so that when the middle rail 2 and the movable rail 3 slide relative to each other on the U-shaped bead rack 6, the friction during sliding is reduced, excessive noise is avoided during the sliding process, and the service life of the middle rail 2 and the movable rail 3 is improved.

[0058] Specifically, if Figure 5 Figure 6 Figure 7 As shown, a buckle 12 is provided on the fixed rail 1, and a slot 51 for cooperating with the buckle 12 is provided on the damping device 5 for realizing a buckle connection between the fixed rail 1 and the damping device 5;

[0059] An eccentric nail 31 is provided on the movable rail 3 , and a limiting hole 52 used in conjunction with the eccentric nail 31 is provided on the damping device 5 for connecting the movable rail 3 and the damping device 5 .

[0060] With the above design, in one embodiment, the benefit is that the damping device 5 can keep the movable rail 3 sliding smoothly during the sliding process, making it less likely to experience sudden rapid movements or violent collisions, thereby facilitating the storage and deployment of the entire hidden rail.

[0061] Specifically, if Figure 5 As shown, the fixed rail 1 is provided with a limit block 13 , which is used to limit the sliding stroke of the fixed rail rack assembly 4 on the fixed rail 1 .

[0062] According to the above design, in one embodiment, the advantage is that the limit block 13 can limit the sliding stroke of the fixed rail rack assembly 4 on the fixed rail 1, thereby limiting the sliding range of the fixed rail rack assembly 4 within the fixed rail 1.

[0063] Specifically, if Figure 8 As shown, the fixed rail rack assembly 4 is provided with a first rack 45 and a second rack 46 , and the first rack 45 is engaged with the bottom gear 113 of the fixed rail to realize a high-pair connection between the fixed rail rack assembly 4 and the fixed rail 1 .

[0064] Through the above design, in one embodiment, the benefit is that the first rack 45 is engaged with the bottom gear 113 of the fixed rail, so that the fixed rail rack assembly 4 can achieve a high-pair connection with the fixed rail 1, and then during the meshing movement, it can accurately transmit power, change the direction and speed of movement, and have a certain load-bearing capacity and can withstand a large load.

[0065] Specifically, if Figure 9 Figure 10As shown, a gear bearing bracket assembly 21 is provided on the middle rail 2, and the gear bearing bracket assembly 21 includes a gear 211 and a gear bearing bracket 212;

[0066] The gear 211 is engaged with the second rack 46 to realize a high-pair connection between the gear support bracket assembly 21 and the fixed rail rack assembly 4 .

[0067] Through the above design, in one embodiment, the benefit is that the gear 211 is engaged with the second rack 46, so that the gear support bracket assembly 21 and the fixed rail rack assembly 4 are connected with each other in a high-pair manner, and thus during the meshing movement, power can be accurately transmitted, the direction and speed of movement can be changed, and it has a certain load-bearing capacity and can withstand a large load.

[0068] Specifically, if Figure 11 As shown, a ball 61 and a fifth roller 62 are provided on the U-shaped bead rack 6, and the ball 61 contacts the outer surface of the middle rail 2 and the inner surface of the movable rail 3;

[0069] The fifth roller 62 contacts the outer surface of the middle rail 2 and the inner surface of the movable rail 3 .

[0070] Through the above design, in one embodiment, the benefit is that the ball 61 contacts the outer surface of the middle rail 2 and the inner surface of the movable rail 3, and the fifth roller 62 contacts the outer surface of the middle rail 2 and the inner surface of the movable rail 3, which can reduce the contact area of ​​the middle rail 2 and the movable rail 3 relative to the U-shaped bead rack 6, thereby reducing the friction, making the sliding process of the middle rail 2 and the movable rail 3 relative to the U-shaped bead rack 6 smoother and less likely to make noise.

[0071] Specifically, if Figure 7 Figure 10 As shown, a movable rail rack 32 is provided on the movable rail 3, and the gear 211 is engaged with the movable rail rack 32 to realize a high-pair connection between the movable rail rack 32 and the gear support bracket assembly 21.

[0072] Through the above design, in one embodiment, the benefit is that the gear 211 is engaged with the movable rail rack 32, so that the gear support bracket assembly 21 and the movable rail 3 rack are connected with each other in a high-pair manner, and then during the meshing movement, power can be accurately transmitted, the direction and speed of movement can be changed, and it has a certain load-bearing capacity and can withstand a large load.

[0073] Specifically, if Figure 7 Figure 9 Figure 10 As shown, the gear 211 is engaged with the movable rail rack 32 and the second rack 46 at the same time, so as to synchronize the sliding strokes of the movable rail 3 and the fixed rail rack assembly 4 on the gear support bracket assembly 21 .

[0074] According to the above design, in one embodiment, the gear 211 is engaged with the movable rail rack 32 and the second rack 46 at the same time, so that the sliding stroke of the movable rail 3 and the fixed rail rack assembly 4 on the gear support bracket assembly 21 are synchronized, thereby allowing the movable rail 3 and the fixed rail 1 to be synchronized in the sliding stroke relative to the middle rail 2.

[0075] Specifically, if Figure 3 Figure 10 As shown, during the sliding stroke of the fixed rail rack assembly 4, the gear 211 is engaged with the second rack 46, and the fixed rail bottom gear 113 is engaged with the first rack 45, so that the gear 211 and the fixed rail bottom gear 113 can achieve synchronous rotation.

[0076] According to the above design, in one embodiment, the gear 211 is engaged with the second rack 46, and the fixed rail bottom gear 113 is engaged with the first rack 45, so that the gear 211 and the fixed rail bottom gear 113 can achieve rotation synchronization, and further enable the middle rail 2 and the fixed rail 1 to achieve sliding synchronization relative to the fixed rail rack assembly 4.

[0077] Specifically, if Figure 7 Figure 8 As shown, the movable rail 3 is provided with a head rubber 33 , on which a plug pin 331 and an anti-sinking bearing 332 are provided. The head rubber 33 is also provided with a plug pin guide groove 333 and two hole positions 334 .

[0078] Through the above design, in one embodiment, the advantage is that the pin 331 can be quickly inserted into the drawer buckle through the pin guide groove 333 of the head glue 33, and at the same time the anti-sinking bearing 332 effectively shares the load-bearing around the drawer rear baffle, and the two hole positions 334 opened on the head glue 33 can make the head glue 33 more convenient to install on the movable rail 3 and keep it firm.

[0079] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A three-section linkage hidden rail, characterized in that: Including fixed rail, middle rail, movable rail, fixed rail rack assembly, damping device, U-shaped bead rack: The fixed rail is fixedly connected to the damping device, and the damping device is fixedly connected to the movable rail; The fixed rail rack assembly is slidably connected to the fixed rail, and the fixed rail is provided with a fixed rail gear assembly; The fixed rail rack assembly is provided with a first roller, a second roller, a third roller and a fourth roller, wherein the first roller contacts the inner surface of the middle rail and the outer surface of the fixed rail; The second roller is in contact with the inner surface of the middle rail and the inner surface of the fixed rail; The third roller is in contact with the inner surface of the middle rail and the inner surface of the fixed rail; The fourth roller is in contact with the inner surface of the middle rail and the inner surface of the fixed rail; The U-shaped bead rack is slidably connected to the middle rail, and the movable rail is slidably connected to the U-shaped bead rack; The fixed rail gear assembly consists of a fixed rail angle code, rivets and a fixed rail bottom gear.

2. The three-section linkage hidden rail according to claim 1, characterized in that: The fixing rail is provided with a buckle, and the damping device is provided with a slot for cooperating with the buckle, so as to realize a buckle connection between the fixing rail and the damping device; The movable rail is provided with an eccentric nail, and the damping device is provided with a limiting hole used in conjunction with the eccentric nail, so as to connect the movable rail with the damping device.

3. The three-section linkage hidden rail according to claim 1, characterized in that: The fixed rail is provided with a limit block, and the limit block is used to limit the sliding stroke of the fixed rail rack assembly on the fixed rail.

4. The three-section linkage hidden rail according to claim 1, characterized in that: The fixed rail rack assembly is provided with a first rack and a second rack. The first rack is engaged with the bottom gear of the fixed rail to realize a high-pair connection between the fixed rail rack assembly and the fixed rail.

5. The three-section linkage hidden rail according to claim 4, characterized in that: The middle rail is provided with a gear support bracket assembly, and the gear support bracket assembly includes a gear and a gear support bracket; The gear is engaged with the second rack, and is used for realizing a high-pair connection between the gear support bracket assembly and the fixed rail rack assembly.

6. The three-section linkage hidden rail according to claim 1, characterized in that: The U-shaped bead rack is provided with a ball and a fifth roller, and the ball contacts the outer surface of the middle rail and the inner surface of the movable rail; The fifth roller contacts the outer surface of the middle rail and the inner surface of the movable rail.

7. The three-section linkage hidden rail according to claim 5, characterized in that: The movable rail is provided with a movable rail rack, and the gear is engaged with the movable rail rack to realize a high-pair connection between the movable rail rack and the gear bearing bracket assembly.

8. The three-section linkage hidden rail according to claim 7, characterized in that: The gear is simultaneously engaged with the movable rail rack and the second rack, and is used for synchronizing the sliding strokes of the movable rail and the fixed rail rack assembly on the gear support bracket assembly.

9. The three-section linkage hidden rail according to claim 8, characterized in that: During the sliding stroke of the fixed rail rack assembly, the gear is engaged with the second rack, and the fixed rail bottom gear is engaged with the first rack, so that the gear and the fixed rail bottom gear can achieve synchronous rotation.

10. The three-section linkage hidden rail according to claim 1, characterized in that: The movable rail is provided with a head rubber, the head rubber is provided with a plug pin and an anti-sinking bearing, and the head rubber is further provided with a plug pin guide groove and two hole positions.

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