Telescopic adjusting guide rail

Abstract

The utility model provides a telescopic adjusting guide rail which comprises an outer rail, a middle rail and an inner rail, and a first retainer and a second retainer are respectively arranged among the three layers of rails, so that the stability during sliding is ensured, and shaking is reduced. A middle rail elastic limiting device arranged at one end of the outer rail and an inner rail elastic limiting device on the middle rail act together, excessive stretching is prevented, buffering is provided, and impact force and abrasion are reduced. The first retainer and the second retainer are each composed of a retainer, a retaining ring and a ball, and low-friction smooth movement is achieved. The first restraining device and the second restraining device at the two ends of the retainer further enhance the stability and safety of the system, and derailment caused by misoperation or external impact is avoided. And the stability, the safety and the durability of the guide rail are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of guide rail technology, and in particular to a telescopic adjustable guide rail. Background Technology

[0002] In various devices and scenarios involving linear motion, guide rails serve as key components, playing a crucial role in guiding and supporting moving parts. From common furniture drawers and curtain tracks to automated equipment in industrial production and sliding platforms for precision instruments, the performance of guide rails directly impacts the user experience and work efficiency of the equipment.

[0003] While extendable curtain tracks offer length adjustment, their stability during the extension and retraction process is poor. For example, some simple curtain tracks rely solely on simple locking devices to maintain structural stability after the length is adjusted, significantly weakening the support strength. This can easily lead to wobbling, misalignment, or even derailment during daily use, severely impacting their lifespan and safety. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a telescopic adjustable guide rail to solve the problem of poor guide rail stability in the prior art.

[0005] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0006] A telescopic adjustable guide rail includes an outer rail, a middle rail slidably disposed in the outer rail, and an inner rail slidably disposed in the middle rail. A first retainer is provided between the outer rail and the middle rail, and a second retainer is provided between the middle rail and the inner rail. One end of the outer rail is provided with a middle rail elastic limiting device, and the end of the middle rail near the middle rail limiting device is provided with an inner rail elastic limiting device. The two ends of the first retainer are provided with first constraint devices, and the two ends of the second retainer are provided with second constraint devices.

[0007] To achieve the above technical solution, the inner rail can slide within the middle rail, and the middle rail can slide within the outer rail, realizing the overall telescopic function of the guide rail. A first retainer is positioned between the outer rail and the middle rail, and a second retainer is positioned between the middle rail and the inner rail. These retainers maintain the relative stability of the guide rails, preventing wobbling or displacement during sliding. The first constraint devices at both ends of the first retainer and the second constraint devices at both ends of the second retainer limit excessive sliding of the guide rails. The elastic limiting device at one end of the outer rail provides elastic resistance to the middle rail, and the elastic limiting device at the end of the middle rail near the middle rail limiting device also provides elastic restraint to the inner rail. By incorporating retainers and constraint devices, the stability of the guide rail under various telescopic states is greatly improved, reducing shaking and noise during operation.

[0008] In one embodiment of the present invention, the middle part of the central rail is provided with a protrusion, and the two sides of the protrusion are symmetrically formed with double-layer rolled edges, and the two sides of the double-layer rolled edges are formed with grooves for placing the first retainer or the second retainer.

[0009] To achieve the above technical solution, a protrusion is provided in the middle of the middle rail to increase the structural strength of the middle rail. Double-layer rolled edges are symmetrically formed on both sides of the protrusion. This design increases the rigidity and bending resistance of the middle rail edge and reduces the risk of deformation or damage that may occur during expansion and contraction. Grooves are formed on both sides of the double-layer rolled edges for placing the first retainer or the second retainer. This not only ensures that the retainer can be firmly fixed in its position, but also improves the assembly accuracy between the components of the entire guide rail system.

[0010] In one embodiment of the present invention, the middle rail elastic limiting device includes an abutment edge disposed at one end of the outer rail and curved upward, an abutment groove fixed on the abutment edge, an abutment block sliding in the abutment groove, and a spring with one end fixed on the abutment groove and the other end fixed on the abutment block.

[0011] The above technical solution achieves precise limitation of the sliding range of the center rail through the coordinated work of the abutment edge, abutment groove, abutment block, and spring. The spring acts as a buffer during the limiting process. When the guide rail is in a state of frequent extension and retraction, if the center rail slides rapidly to the elastic limiting device without a buffer, a large impact force will be generated, easily damaging the connection parts of the guide rail and other related components. The spring in this elastic limiting device absorbs some of the kinetic energy of the center rail during sliding, reducing the impact force when the center rail reaches the limiting position, decreasing the wear on various components of the guide rail, and extending the service life of the guide rail.

[0012] In one embodiment of the present invention, the first constraint device includes a first inner constraint block disposed on the outer rail and away from the end of the middle rail elastic limiting device, and a first outer constraint block disposed on the middle rail and close to the end of the middle rail elastic limiting device.

[0013] By implementing the above technical solution, the presence of the first constraint device greatly reduces the risk of the middle rail slipping out of the outer rail due to misoperation or external impact, and can significantly improve the stability of the entire guide rail system during operation.

[0014] In one embodiment of the present invention, the second constraint device includes a second inner constraint block disposed on the middle rail and away from one end of the inner rail elastic limiting device, and a second outer constraint block disposed on the inner rail and close to one end of the inner rail elastic limiting device.

[0015] To achieve the above technical solution, the presence of the second restraint device greatly reduces the risk of the inner rail slipping out of the middle rail due to misoperation or external impact. The design of the second restraint device makes the structure of the entire system smoother and more stable.

[0016] In one embodiment of the present invention, the inner rail elastic limiting device includes an elastic limiting block and a locking bolt for locking the elastic limiting block onto the middle rail.

[0017] By implementing the above technical solution, the elastic limit block can provide effective resistance when the inner rail reaches the set position, preventing the inner rail from derailing or being damaged due to excessive stretching.

[0018] In one embodiment of the present invention, both the first retainer and the second retainer include a retainer, a plurality of retaining rings uniformly embedded in the retainer, and balls embedded in the retaining rings.

[0019] To achieve the above technical solution, the cage is the basic structure of the first and second retainers. It provides a physical framework for the entire retainer, ensuring that all components can be securely installed in the correct position. The retaining ring not only secures the balls but also helps distribute the load, allowing each ball to bear the pressure from the rails evenly. The balls embedded in the retaining ring provide rolling contact between the rails, thereby reducing friction and making the relative movement between the outer, middle, and inner rails smoother and more fluid.

[0020] As described above, the telescopic adjustable guide rail of this utility model has the following beneficial effects: By setting a first retainer between the outer rail and the middle rail, and a second retainer between the middle rail and the inner rail, the relative position stability between the guide rails is effectively maintained. The first constraint devices at both ends of the first retainer and the second constraint devices at both ends of the second retainer greatly reduce the swaying and offset of the guide rail during sliding. The design of the elastic limiting device for the middle rail and the elastic limiting device for the inner rail can prevent excessive sliding of the rail and accurately provide elastic resistance at preset positions, protecting the guide rail assembly from damage and improving the service life of the guide rail. Attached Figure Description

[0021] Figure 1 The image shown is a perspective view of this utility model.

[0022] Figure 2 The image shown is a side view of this utility model.

[0023] Figure 3 The diagram shown is a structural schematic of the outer rail.

[0024] Figure 4 The diagram shown is a structural schematic of the elastic limit device for the middle rail.

[0025] Figure 5 The diagram shown is a structural schematic of the middle track.

[0026] Figure 6 The diagram shown is a structural schematic of the inner rail.

[0027] Figure 7 The diagram shows the structure of either the first or second retainer.

[0028] Component designation explanation

[0029] 1. Outer rail; 2. Middle rail; 3. Inner rail; 4. First retainer; 5. Second retainer; 6. Protrusion; 7. Double-layer rolled edge; 8. Groove; 9. Abutting edge; 10. Abutting groove; 11. Abutting block; 12. Spring; 13. First inner constraint block; 14. First outer constraint block; 15. Second inner constraint block; 16. Second outer constraint block; 17. Elastic limit block; 18. Locking bolt; 19. Cage; 20. Retaining ring; 21. Ball bearing. Detailed Implementation

[0030] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0031] Please see Figures 1 to 7 This utility model provides a telescopic adjustable guide rail, including an outer rail 1, a middle rail 2 slidably disposed in the outer rail 1, and an inner rail 3 slidably disposed in the middle rail 2. A first retainer 4 is provided between the outer rail 1 and the middle rail 2, and a second retainer 5 is provided between the middle rail 2 and the inner rail 3. One end of the outer rail 1 is provided with an elastic limiting device for the middle rail 2, and one end of the middle rail 2 near the limiting device for the middle rail 2 is provided with an elastic limiting device for the inner rail 3. The two ends of the first retainer 4 are provided with first constraint devices, and the two ends of the second retainer 5 are provided with second constraint devices.

[0032] The inner rail 3 can slide within the middle rail 2, and the middle rail 2 can slide within the outer rail 1, realizing the overall telescopic function of the guide rail. A first retainer 4 is located between the outer rail 1 and the middle rail 2, and a second retainer 5 is located between the middle rail 2 and the inner rail 3. These retainers maintain the relative stability of the guide rails, preventing wobbling or displacement during sliding. The first constraint devices at both ends of the first retainer 4 and the second constraint devices at both ends of the second retainer 5 limit excessive sliding of the guide rails. The elastic limiting device on the middle rail 2 at one end of the outer rail 1 provides elastic resistance to the middle rail 2. The elastic limiting device on the inner rail 3 near the limiting device of the middle rail 2 also provides elastic limiting for the inner rail 3. By setting retainers and constraint devices, the stability of the guide rail under various telescopic states is greatly improved, and shaking and noise during operation are reduced.

[0033] The middle rail 2 has a protrusion 6 in the center, and double-layer rolled edges 7 are symmetrically formed on both sides of the protrusion 6. Grooves 8 are formed on both sides of the double-layer rolled edges 7 for placing the first retainer 4 or the second retainer 5. The protrusion 6 in the center of the middle rail 2 increases the structural strength of the middle rail 2. The double-layer rolled edges 7 symmetrically formed on both sides of the protrusion 6 increase the rigidity and bending resistance of the edge of the middle rail 2, reducing the risk of deformation or damage that may occur during expansion and contraction. The grooves 8 formed on both sides of the double-layer rolled edges 7 for placing the first retainer 4 or the second retainer 5 not only ensure that the retainer can be firmly fixed in its position, but also improve the assembly accuracy between the components of the entire guide rail system.

[0034] The elastic limiting device of the middle rail 2 includes an abutment edge 9 that is disposed at one end of the outer rail 1 and is curved upward, an abutment groove 10 fixed on the abutment edge 9, an abutment block 11 that slides in the abutment groove 10, and a spring 12 that is fixed at one end on the abutment groove 10 and at the other end on the abutment block 11.

[0035] Through the coordinated operation of the abutment edge 9, abutment groove 10, abutment block 11, and spring 12, the sliding range of the middle rail 2 can be precisely limited. Spring 12 acts as a buffer during the limiting process. When the guide rail is in a state of frequent extension and retraction, if the middle rail 2 slides rapidly to the elastic limiting device, without a buffer, a large impact force will be generated, easily damaging the connecting parts of the guide rail and other related components. The spring 12 in this elastic limiting device absorbs some of the kinetic energy of the middle rail 2 during sliding, reducing the impact force when the middle rail 2 reaches the limiting position, reducing the wear on various components of the guide rail, and extending the service life of the guide rail.

[0036] The first constraint device includes a first inner constraint block 13 disposed on the outer rail 1 and at the end away from the elastic limiting device of the middle rail 2, and a first outer constraint block 14 disposed on the middle rail 2 and at the end close to the elastic limiting device of the middle rail 2. The presence of the first constraint device greatly reduces the risk of the middle rail 2 slipping out of the outer rail 1 due to misoperation or external impact, and can significantly improve the stability of the entire guide rail system during operation.

[0037] The second constraint device includes a second inner constraint block 15 disposed on the middle rail 2 and at the end away from the elastic limiting device of the inner rail 3, and a second outer constraint block 16 disposed on the inner rail 3 and at the end close to the elastic limiting device of the inner rail 3. The presence of the second constraint device greatly reduces the risk of the inner rail 3 slipping out of the middle rail 2 due to misoperation or external impact. The design of the second constraint device makes the structure of the entire system smoother and more stable.

[0038] The inner rail 3 elastic limiting device includes an elastic limiting block 17 and a locking bolt 18 for locking the elastic limiting block 17 onto the middle rail 2. The elastic limiting block 17 can provide effective resistance when the inner rail 3 reaches the set position, preventing the inner rail 3 from derailing or being damaged due to excessive stretching.

[0039] Both the first retainer 4 and the second retainer 5 include a retainer 19, a plurality of retaining rings 20 evenly embedded in the retainer 19, and balls 21 embedded in the retaining rings 20. The retainer 19 is the basic structure of the first retainer 4 and the second retainer 5, providing a physical framework for the entire retainer and ensuring that all components can be securely installed in the correct position. The retaining rings 20 not only fix the balls 21 but also help distribute the load, so that each ball 21 can bear the pressure from the rails evenly. The balls 21 embedded in the retaining rings 20 provide rolling contact between the rails, thereby reducing friction and making the relative movement between the outer rail 1, the middle rail 2, and the inner rail 3 smoother and more fluid.

[0040] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A telescopic adjustable guide rail, comprising an outer rail (1), a middle rail (2) slidably disposed in the outer rail (1), and an inner rail (3) slidably disposed in the middle rail (2), characterized in that: A first retainer (4) is provided between the outer rail (1) and the middle rail (2), and a second retainer (5) is provided between the middle rail (2) and the inner rail (3); One end of the outer rail (1) is provided with a middle rail (2) elastic limiting device, and the end of the middle rail (2) near the middle rail (2) limiting device is provided with an inner rail (3) elastic limiting device; The first retainer (4) has a first constraint device at both ends, and the second retainer (5) has a second constraint device at both ends.

2. The retractable adjustable guide rail according to claim 1, characterized in that: The middle rail (2) has a protrusion (6) in the middle, and double-layer rolled edges (7) are symmetrically formed on both sides of the protrusion (6). The double-layer rolled edges (7) form grooves (8) on both sides for placing the first retainer (4) or the second retainer (5).

3. The retractable adjustable guide rail according to claim 1, characterized in that: The elastic limiting device of the middle rail (2) includes an abutment edge (9) set at one end of the outer rail (1) and curved upward, an abutment groove (10) fixed on the abutment edge (9), an abutment block (11) sliding in the abutment groove (10), and a spring (12) with one end fixed on the abutment groove (10) and the other end fixed on the abutment block (11).

4. The retractable adjustable guide rail according to claim 1, characterized in that: The first constraint device includes a first inner constraint block (13) disposed on the outer rail (1) and away from the elastic limiting device of the middle rail (2), and a first outer constraint block (14) disposed on the middle rail (2) and close to the elastic limiting device of the middle rail (2).

5. A retractable adjustable guide rail according to claim 1, characterized in that: The second constraint device includes a second inner constraint block (15) disposed on the middle rail (2) and away from the elastic limiting device of the inner rail (3), and a second outer constraint block (16) disposed on the inner rail (3) and close to the elastic limiting device of the inner rail (3).

6. The retractable adjustable guide rail according to claim 1, characterized in that: The inner rail (3) elastic limiting device includes an elastic limiting block (17) and a locking bolt (18) for locking the elastic limiting block (17) on the middle rail (2).

7. A retractable adjustable guide rail according to claim 1, characterized in that: Both the first retainer (4) and the second retainer (5) include a retainer (19), a plurality of retaining rings (20) uniformly embedded in the retainer (19), and balls (21) embedded in the retaining rings (20).

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