Self-locking damping buffer structure of multi-segment slide rail

Abstract

This utility model relates to the field of slide rail technology, specifically to a self-locking damping buffer structure for a multi-segment slide rail. It includes a fixed rail, an intermediate rail slidably connected within the fixed rail, and a movable rail slidably connected within the intermediate rail. Slider blocks are fixedly installed at the rear ends of both the intermediate and movable rails. Two symmetrical first springs are fixedly installed on the inner wall of the rear end of the intermediate rail, with an inner magnetic block fixedly installed between the front ends of the two first springs. A damping buffer assembly is fixedly installed on the inner wall of the front end of the fixed rail. The damping buffer assembly includes two damping sleeves fixedly installed on the upper and lower sides of the inner wall of the front end of the fixed rail, respectively. An inner piston rod is slidably connected within each damping sleeve, and a second spring is fixedly installed between the rear end of the inner piston rod and the inner wall of the damping sleeve. This utility model has buffering and self-locking functions, avoiding rigid collisions between components caused by rapid sliding, and thus extending service life.

Description

Technical Field

[0001] This utility model relates to the field of slide rail technology, and more specifically, to a self-locking damping buffer structure for multi-segment slide rails. Background Technology

[0002] Multi-segment slide rails, as a key component for achieving relative sliding functionality, have found widespread and significant applications in numerous fields, including furniture manufacturing, industrial equipment, medical devices, and automotive parts, thanks to their ability to extend and retract long distances and their ease of operation. In furniture, they provide smooth opening and closing for drawers and wardrobe sliding doors; in industrial equipment, they are commonly used to support and move various sliding components; and in medical devices, they ensure the precise sliding and positioning of instrument trays. As industries continuously raise their product performance requirements, the smoothness of sliding, the cushioning effect, and the reliability of self-locking mechanisms have become important indicators for evaluating the quality of multi-segment slide rails.

[0003] Although multi-section slide rails are widely used, existing technologies still have many shortcomings in practical applications, making it difficult to meet increasingly demanding usage requirements. For example, in terms of cushioning performance, the cushioning structure design of existing multi-section slide rails is often relatively simple, mostly relying on simple springs for cushioning, failing to create a multi-level, effective cushioning effect. When the moving rail and intermediate rail slide rapidly and approach a closed state, due to insufficient cushioning force and a lack of reasonable cushioning stroke design, large rigid collisions easily occur between components. This not only leads to accelerated wear and deformation of the slide rail components due to frequent impacts, shortening the slide rail's service life, but also generates significant noise, seriously affecting the user experience. Therefore, we propose a self-locking damping cushioning structure for multi-section slide rails. Utility Model Content

[0004] The purpose of this invention is to provide a self-locking damping buffer structure for multi-segment slide rails to solve the defects mentioned in the background art.

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

[0006] A self-locking damping buffer structure for a multi-segment slide rail includes a fixed rail, an intermediate rail slidably connected within the fixed rail, a movable rail slidably connected within the intermediate rail, sliders fixedly installed at the rear ends of both the intermediate rail and the movable rail, two symmetrical first springs fixedly installed on the inner wall of the rear end of the intermediate rail, and an inner magnetic block fixedly installed between the front ends of the two first springs; a damping buffer assembly is fixedly installed on the inner wall of the front end of the fixed rail, the damping buffer assembly including two damping sleeves respectively fixedly installed on the upper and lower sides of the inner wall of the front end of the fixed rail, an inner piston rod slidably connected within each of the two damping sleeves, and a second spring fixedly installed between the rear end of the inner piston rod and the inner wall of the damping sleeve.

[0007] Preferably, each slider is rotatably connected to multiple rollers on its upper and lower sides, and the multiple rollers respectively abut against the inner walls of the corresponding fixed rail and the intermediate rail;

[0008] This setting reduces friction, making the slider move more smoothly.

[0009] Preferably, the front end of the intermediate rail slides out from the front end of the fixed rail, and the front end of the movable rail slides out from the front end of the intermediate rail;

[0010] This setting is used for normal assembly operations.

[0011] Preferably, the outer wall of the inner magnetic block is slidably connected to the inner wall of the intermediate rail, and the slider is used for buffer protection when it moves to abut against the inner magnetic block.

[0012] Preferably, the damping sleeve is filled with damping fluid, and the rear end cylinders of the upper and lower damping sleeves are connected by a conductive pipe.

[0013] This feature allows the damping fluid in the upper and lower damping sleeves to circulate, resulting in greater stability during stress buffering.

[0014] Preferably, the size of the inner piston rod is adapted to the size of the damping sleeve, and a linkage rod is fixedly installed between the front ends of the two inner piston rods;

[0015] This setting allows the two inner piston rods to move more stably and smoothly at the same time.

[0016] Preferably, a groove is provided on the top wall of the rear end of the fixed rail, a self-locking post is slidably connected in the groove, a third spring is fixedly installed between the top of the self-locking post and the inner top wall of the groove, and the bottom of the self-locking post can be inserted into the gap between two adjacent rollers.

[0017] Preferably, when the third spring is in its normal state, the upper half of the self-locking post is located in the groove, and the bottom end of the self-locking post is hemispherical.

[0018] The above two settings serve to limit the slider after it is stored, achieving a self-locking effect and preventing it from sliding easily.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model uses an inner magnetic block that works in conjunction with a first spring. When the slider at the rear end of the movable rail moves to abut against the inner magnetic block, the first spring provides initial buffering, while the inner magnetic block is attracted and fixed, achieving self-locking. This buffers the sliding between the movable rail and the intermediate rail, avoiding rigid collisions between components caused by rapid sliding, thus reducing wear, extending the service life of the slide rail, and reducing noise.

[0021] 2. This utility model, through the setting of a damping buffer component, uses damping fluid filled in the damping sleeve in conjunction with the inner piston rod and the second spring. When the middle rail drives the slider to slide towards the rear end of the fixed rail and contact the inner piston rod, the damping fluid can flow between the upper and lower damping sleeves through the guide tube. Combined with the elastic action of the second spring, a stable damping buffer is formed, which realizes effective damping control of the sliding between the middle rail and the fixed rail, adapts to the buffering requirements under different loads and sliding speeds, and achieves the effect of improving the smoothness of sliding.

[0022] 3. This utility model, through the setting of a self-locking post, a third spring and a sliding groove, when the slider is retracted into the position, the self-locking post is inserted into the gap between two adjacent rollers under the action of the third spring, thereby realizing the automatic locking of the slider and preventing the slide rail from accidentally sliding due to external vibration or accidental contact. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the damping buffer assembly of this utility model;

[0025] Figure 3 This utility model Figure 1 Enlarged view of point A in the middle;

[0026] Figure 4 This utility model Figure 1 Enlarged view of point B in the middle;

[0027] The meanings of the labels in the diagram are as follows:

[0028] 1. Fixed rail; 10. Intermediate rail; 11. Movable rail; 12. Slider; 121. Roller; 13. Inner magnetic block; 14. First spring;

[0029] 2. Damping buffer assembly; 20. Damping sleeve; 21. Second spring; 22. Conductor tube; 23. Inner piston rod; 24. Linkage rod;

[0030] 3. Slide groove; 30. Third spring; 31. Self-locking pin. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-4 This utility model provides a technical solution: a self-locking damping buffer structure for a multi-segment slide rail, including a fixed rail 1, an intermediate rail 10 slidably connected inside the fixed rail 1, a movable rail 11 slidably connected inside the intermediate rail 10, sliders 12 fixedly installed at the rear ends of both the intermediate rail 10 and the movable rail 11, two symmetrical first springs 14 fixedly installed on the inner wall of the rear end of the intermediate rail 10, and an inner magnetic block 13 fixedly installed between the front ends of the two first springs 14; a damping buffer assembly 2 is fixedly installed on the inner wall of the front end of the fixed rail 1. The damping buffer assembly 2 includes two damping sleeves 20 respectively fixedly installed on the upper and lower sides of the inner wall of the front end of the fixed rail 1, an inner piston rod 23 slidably connected inside each of the two damping sleeves 20, and a second spring 21 fixedly installed between the rear end of the inner piston rod 23 and the inner wall of the damping sleeve 20. In use, the first spring 14 and the second spring 21 respectively buffer and protect the retraction of the movable rail 11 and the intermediate rail 10. The damping fluid in the damping sleeve 20 can improve the buffering effect. The inner magnetic block 13 is magnetically connected to the corresponding slider 12, which can realize self-locking operation and prevent the slider 12 from accidentally sliding out.

[0033] like Figure 1 As shown, each slider 12 has multiple rollers 121 rotatably connected to its upper and lower sides. The multiple rollers 121 abut against the inner walls of the corresponding fixed rail 1 and intermediate rail 10, which greatly reduces the friction when the two sliders 12 slide in the fixed rail 1 and intermediate rail 10, making the movement of the sliders 12 smoother and improving the overall sliding performance of the slide rail.

[0034] like Figure 1As shown, multiple ends of the intermediate rail 10 slide out from multiple ends of the fixed rail 1, and multiple ends of the movable rail 11 slide out from multiple ends of the intermediate rail 10, enabling the multi-section slide rail to be assembled normally and ensuring that the movable rail 11 and the intermediate rail 10 can achieve telescopic sliding according to the design requirements, providing a basic guarantee for the normal use of the slide rail.

[0035] Specifically, the outer wall of the inner magnetic block 13 is slidably connected to the inner wall of the intermediate rail 10, and the slider 12 is used for buffering protection when it moves to abut against the inner magnetic block 13. When the movable rail 11 drives the slider 12 to slide into the intermediate rail 10, the first spring 14 on the rear side of the inner magnetic block 13 can effectively block and buffer the slider 12, realizing buffering protection for the retraction and sliding of the movable rail 11; the magnetic connection between the inner magnetic block 13 and the slider 12 can realize self-locking operation.

[0036] Furthermore, the damping sleeve 20 is filled with damping fluid, and the rear ends of the upper and lower damping sleeves 20 are connected by a connecting pipe 22. When the inner piston rod 23 slides within the damping sleeve 20, the damping fluid can flow between the upper and lower damping sleeves 20 through the connecting pipe 22, making the damping buffer assembly 2 more stable during the force buffering process and ensuring the consistency of the buffering effect between the intermediate rail 10 and the fixed rail 1.

[0037] In addition, the size of the inner piston rod 23 is adapted to the size of the damping sleeve 20. A linkage rod 24 is fixedly installed between the front ends of the two inner piston rods 23. The slider 12 at the rear end of the intermediate rail 10 can contact and connect with the linkage rod 24, so that the two inner piston rods 23 can slide synchronously in the damping sleeve 20 under the drive of the linkage rod 24. This ensures the coordination and stability of the movement of the two inner piston rods 23 of the damping buffer assembly 2, and improves the damping buffer effect.

[0038] It is worth noting that a groove 3 is provided on the top wall of the rear end of the fixed rail 1. A self-locking post 31 is slidably connected in the groove 3. A third spring 30 is fixedly installed between the top of the self-locking post 31 and the inner top wall of the groove 3. The bottom of the self-locking post 31 can be inserted into the gap between two adjacent rollers 121. When the slider 12 is retracted into place, the bottom of the self-locking post 31 is inserted into the gap between the two adjacent rollers 121 under the action of the third spring 30, effectively limiting the slider 12 and achieving a self-locking effect, preventing the slider 12 from sliding easily.

[0039] It is worth noting that when the third spring 30 is in the normal state, the upper part of the self-locking post 31 is located in the slide groove 3. The bottom end of the self-locking post 31 is hemispherical, which allows the self-locking post 31 to slide flexibly in the slide groove 3. The hemispherical bottom end design makes the roller 121 on the slider 12 push the self-locking post 31 more smoothly, which not only ensures the reliable realization of the self-locking function, but also does not affect the normal sliding operation of the slider 12.

[0040] When the self-locking damping buffer structure of the multi-segment slide rail of this utility model is used, the movable rail 11 is pulled outward, and the slider 12 at the rear end of the movable rail 11 moves accordingly. The multiple rollers 121 on the upper and lower sides of the slider 12 roll on the inner wall of the middle rail 10, reducing friction and making the sliding smoother. At this time, the magnetic connection between the inner magnetic block 13 and the slider 12 on the movable rail 11 is overcome, the slider 12 disengages from the inner magnetic block 13, and continues to be pulled, so that the middle rail 10 slides in the fixed rail 1, and the multiple rollers 121 on the slider 12 at its rear end roll along the inner wall of the fixed rail 1. The self-locking post 31 is pushed up by the rollers 121 and compresses the third spring 30, disengaging from the gap between the rollers 121.

[0041] When closed, the movable rail 11 is pushed inward, and the slider 12 moves to the front end of the intermediate rail 10. After contacting the inner magnetic block 13, the first spring 14 is compressed. At the same time, the inner magnetic block 13 and the slider 12 are magnetically connected to achieve initial self-locking. The intermediate rail 10 moves with the movable rail 11, and its slider 12 contacts the linkage rod 24, pushing the inner piston rod 23 to slide in the damping sleeve 20. The second spring 21 is compressed, and the damping fluid flows through the conductor tube 22 to enhance the buffer. When the slider 12 is retracted into place, the self-locking pin 31 is inserted into the gap of the roller 121 under the action of the third spring 30, completing the final self-locking.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A self-locking damping buffer structure for a multi-segment slide rail, characterized in that: The system includes a fixed rail (1), a middle rail (10) slidably connected inside the fixed rail (1), a movable rail (11) slidably connected inside the middle rail (10), a slider (12) fixedly installed at the rear end of both the middle rail (10) and the movable rail (11), two symmetrical first springs (14) fixedly installed on the inner wall of the rear end of the middle rail (10), and an inner magnetic block (13) fixedly installed between the front ends of the two first springs (14); a damping buffer assembly (2) is fixedly installed on the inner wall of the front end of the fixed rail (1), the damping buffer assembly (2) includes two damping sleeves (20) fixedly installed on the upper and lower sides of the inner wall of the front end of the fixed rail (1), an inner piston rod (23) slidably connected inside each of the two damping sleeves (20), and a second spring (21) fixedly installed between the rear end of the inner piston rod (23) and the inner wall of the damping sleeve (20).

2. The self-locking damping buffer structure of a multi-stage slide rail according to claim 1, wherein: Each slider (12) has multiple rollers (121) rotatably connected to its upper and lower sides, and the multiple rollers (121) abut against the inner walls of the corresponding fixed rail (1) and intermediate rail (10).

3. The self-locking damping buffer structure of a multi-stage slide rail according to claim 1, wherein: The front end of the intermediate rail (10) slides out from the front end of the fixed rail (1), and the front end of the movable rail (11) slides out from the front end of the intermediate rail (10).

4. The self-locking damping buffer structure of a multi-stage slide rail according to claim 1, wherein: The outer wall of the inner magnetic block (13) is slidably connected to the inner wall of the intermediate rail (10), and the slider (12) is used for buffer protection when it moves to abut against the inner magnetic block (13).

5. The self-locking damping buffer structure of a multi-stage slide rail according to claim 1, wherein: The damping sleeve (20) is filled with damping fluid, and the rear end cylinders of the upper and lower damping sleeves (20) are connected by a conduit (22).

6. The self-locking damping buffer structure of a multi-stage slide rail according to claim 1, wherein: The dimensions of the inner piston rod (23) are adapted to the dimensions of the damping sleeve (20), and a linkage rod (24) is fixedly installed between the front ends of the two inner piston rods (23).

7. The self-locking damping buffer structure of multi-stage slide rail according to claim 2, characterized in that: A groove (3) is provided on the top wall of the rear end of the fixed rail (1). A self-locking post (31) is slidably connected in the groove (3). A third spring (30) is fixedly installed between the top of the self-locking post (31) and the inner top wall of the groove (3). The bottom of the self-locking post (31) can be inserted into the gap between two adjacent rollers (121).

8. The self-locking damping buffer structure of the multi-stage slide rail according to claim 7, characterized in that: When the third spring (30) is in a normal state, the upper part of the self-locking post (31) is located in the groove (3), and the bottom end of the self-locking post (31) is hemispherical.

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