A slide rail structure

Abstract

The utility model discloses a slide rail structure belongs to slide rail technical field, including outer rail, inner rail and the middle rail between outer rail and inner rail, this middle rail has the retraction point position and the extension point position relative to this outer rail, still include: tripping structure, set up on this middle rail, and this tripping structure has the first guide surface, elastic structure, install on this outer rail, and the execution end of this elastic structure is elastically active between the first position and the second position relative to outer rail, when the middle rail is in the retraction point position, the execution end of elastic structure elastically resist on this middle rail is first position, when the middle rail is in the extension point position, the execution end of elastic structure is placed in the lock groove on this middle rail is second position, when this middle rail moves from the extension point position to the retraction point position, the first guide surface contacts and promotes the execution end of this elastic structure to separate from the lock groove, and the slide rail structure of this application installs elastic structure on outer rail, has greater design space, and it is convenient to carry out more flexible design and improvement.

Description

Technical Field

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

[0002] In modern data center environments, efficient server installation and maintenance are crucial. To facilitate server installation, maintenance, and repair, sliding rails are widely used for mounting servers in server racks. These rails allow servers to slide flexibly within the rack, extending and retracting, thus facilitating various operations by technicians.

[0003] Currently, most common sliding rail structures on the market typically incorporate the middle rail's rear positioning structure (i.e., the structure that locks the middle rail to the outer rail after it's pulled out) on the middle rail itself. This design has several drawbacks. Firstly, the middle rail itself has limited space, resulting in a small design footprint. This significantly restricts structural design and increases the difficulty of the design process. To achieve the required functionality within a confined space, complex structures and sophisticated manufacturing processes are often necessary, leading to a substantial increase in production costs.

[0004] On the other hand, due to the limited space, the rationality of the structural design is difficult to guarantee, making structural failure more likely. For example, during long-term use, friction, collisions, and stress concentration between components may lead to structural loosening and damage, thus affecting the normal use of the slide rail. Moreover, when the structure fails, its compact design and limited space make disassembly difficult, and may even cause jamming or direct damage, greatly inconveniencing maintenance and replacement work and increasing maintenance and time costs.

[0005] Furthermore, existing slide rail structures typically require manual locking and unlocking during use, increasing the workload of operators and reducing work efficiency.

[0006] In summary, existing slide rail structures have significant shortcomings in terms of design space, structural reliability, manufacturing cost, maintenance convenience, and ease of operation, necessitating the development of a new slide rail structure. Utility Model Content

[0007] This utility model provides a slide rail structure to solve the problems in the prior art.

[0008] This utility model embodiment adopts the following technical solution: a slide rail structure, including an outer rail, an inner rail, and a middle rail located between the outer rail and the inner rail, wherein the middle rail is slidably connected to the outer rail, the inner rail is slidably connected to the middle rail, and the middle rail has a retracted point and an extended point relative to the outer rail; the slide rail structure further includes: a release structure disposed on the middle rail, and the release structure having a first guide surface; an elastic structure installed on the outer rail, and the actuating end of the elastic structure elastically moves between a first position and a second position relative to the outer rail; when the middle rail is at the retracted point, the actuating end of the elastic structure elastically abuts against the middle rail, i.e., the first position; when the middle rail is at the extended point, the actuating end of the elastic structure is placed in a locking groove on the middle rail, i.e., the second position; when the middle rail moves from the extended point to the retracted point, the first guide surface contacts and pushes the actuating end of the elastic structure to disengage from the locking groove, so that the actuating end of the elastic structure switches from the second position to the first position.

[0009] Preferably, the elastic structure includes: a mounting bracket mounted on the outer rail; a locking block at least partially slidably connected to the mounting bracket, the locking block being the actuating end of the elastic structure; and an elastic element disposed between the mounting bracket and the locking block. When the middle rail is in the retracted position, the elastic element elastically pushes the locking block against the middle rail; when the middle rail is in the extended position, the elastic element elastically pushes the locking block into the locking groove on the middle rail.

[0010] Preferably, the outer rail also has a mounting groove, and the locking block is at least partially located in the mounting groove; the mounting bracket has a plurality of sliding grooves, and the locking block is provided with a sliding part that is slidably connected to the plurality of sliding grooves; when the locking block is elastically placed in the locking groove, the plurality of sliding parts all abut against the outer side of the outer rail.

[0011] Preferably, the mounting bracket has a first column block, and the locking block has a second column block corresponding to the first column block; the elastic element is configured as a compression spring, and the two ends of the compression spring are respectively sleeved on the first column block and the second column block.

[0012] Preferably, the elastic structure is configured as a spring sheet, the outer rail has a mounting groove, one end of the spring sheet is fixedly mounted on the outer side of the outer rail, the other end of the spring sheet is a free end, and the inner side of the free end has a limiting member, which is the actuating end of the elastic structure; when the middle rail is in the retracted position, the limiting member at least partially penetrates the mounting groove and abuts against the middle rail under the action of the spring sheet; when the middle rail is in the extended position, the limiting member is placed in the locking groove on the middle rail under the action of the spring sheet.

[0013] Preferably, the release structure includes: a movable sliding cover, which is slidably connected to a groove on the middle rail along the length of the middle rail, and the first guide surface is located on the movable sliding cover; a second spring, installed inside the groove, to push the movable sliding cover against one end of the groove. The movable sliding cover includes: an upper cover plate, located in the gap between the middle rail and the outer rail, and the first guide surface is disposed on the upper cover plate; a lower cover plate, located in the gap between the middle rail and the inner rail and fixedly connected to the upper cover plate, and the lower cover plate also has a second guide surface; when the middle rail moves from the extension point to the retraction point, the second guide surface first contacts and pushes the actuating end of the elastic structure to at least partially disengage from the locking groove; subsequently, the first guide surface contacts and pushes the actuating end of the elastic structure to completely disengage from the locking groove, so that the actuating end of the elastic structure switches from the second position to the first position.

[0014] Preferably, the first guide surface and / or the second guide surface are configured as an arc-shaped ramp; the actuating end of the elastic structure has a first ramp, and the part of the movable sliding cover that contacts the locking block is the first ramp.

[0015] Preferably, a push block protruding from the surface of the inner rail is also fixedly provided on the inner rail; when the inner rail slides relative to the middle rail, the push block pushes the movable sliding cover to drive the middle rail to move from the extension point to the retraction point.

[0016] Preferably, the release structure also has a third guide surface; when the middle rail moves from the retraction point to the extension point, the third guide surface first contacts and pushes the actuating end of the elastic structure to disengage from the middle rail and abut against the release structure until the lock block reaches the lock groove position and is placed in the lock groove.

[0017] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0018] Firstly, existing slide rail structures, with their positioning / locking structures mounted on the middle rail, have limited design space. In contrast, the slide rail structure of this application places the release structure on the middle rail and the elastic structure on the outer rail. The elastic structure, as the main driving component for locking the middle and outer rails, has greater design space on the outer rail, allowing for more flexible design and improvement. Therefore, the limited design space in traditional structures leads to a high probability of structural failure. This slide rail structure, through optimized design, increases the design space, reduces structural failures caused by insufficient design space, and improves the overall stability and reliability of the structure.

[0019] Secondly, designing in confined spaces increases manufacturing costs. The sliding rail structure of this application increases design space, reduces the difficulty and complexity of the manufacturing process, and thus lowers manufacturing costs. Furthermore, traditional structures are difficult to disassemble after failure, and may even cause jamming or direct damage. This elastic structure design on the outer rail allows for relatively easy disassembly and maintenance of the elastic structure even in the event of structural failure of the middle rail, facilitating the disassembly of both the middle and outer rails and reducing maintenance costs and time. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a side view of the elastic structure of this utility model in the first embodiment;

[0023] Figure 3 This is a top view of the first embodiment of the elastic structure of this utility model;

[0024] Figure 4 This utility model Figure 3 Sectional view of section AA in the image;

[0025] Figure 5 This utility model Figure 3 The three-dimensional sectional view of section BB in the middle;

[0026] Figure 6 An exploded view of the first embodiment of the outer rail and elastic structure of this utility model;

[0027] Figure 7 This is a schematic diagram of the structure of this utility model after the outer rail has been removed;

[0028] Figure 8 This is an exploded view of the middle rail and the tripping structure of this utility model;

[0029] Figure 9 This is a three-dimensional sectional view of the elastic structure of the present invention as a second embodiment;

[0030] Figure 10 This is an exploded view of the outer rail and spring clips of this utility model;

[0031] Figure 11 This is a three-dimensional structural diagram of the inner rail and movable sliding cover of this utility model.

[0032] Figure Labels

[0033] 1-Outer rail; 11-Mounting groove; 2-Inner rail; 21-Push block; 3-Middle rail; 31-Locking groove; 32-Sliding groove; 4-Disengagement structure; 41-Movable sliding cover; 411-Upper cover plate; 412-First guide surface; 413-Lower cover plate; 414-Second guide surface; 42-Second spring; 43-Third guide surface; 5-Elastic structure; 51-Mounting bracket; 511-Sliding groove; 512-First pillar block; 52-Locking block; 521-Sliding part; 522-Second pillar block; 53-Elastic element; 54-Spring piece; 55-Limiting element; 56-First inclined surface. Detailed Implementation

[0034] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0035] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0036] Inside the server room, servers are mounted on racks in the chassis via sliding rails. Currently, the positioning structure behind the middle rail 3 in most sliding rail structures on the market is designed on the middle rail 3, which limits the available design space and increases the probability of structural failure. Designing in a confined space increases manufacturing costs. Disassembly is difficult after structural failure, potentially causing jamming or direct damage.

[0037] Reference Figures 1 to 11 As shown, this utility model embodiment provides a slide rail structure, including an outer rail 1, an inner rail 2, and a middle rail 3 located between the outer rail 1 and the inner rail 2. The middle rail 3 is slidably connected to the outer rail 1, and the inner rail 2 is slidably connected to the middle rail 3. The middle rail 3 has a retraction point and an extension point relative to the outer rail 1. The slide rail structure also includes a release structure 4 and an elastic structure 5. The release structure 4 is disposed on the middle rail 3 and has a first guide surface 412. The elastic structure 5 is installed on the outer rail 1, and the actuating end of the elastic structure 5 elastically moves between a first position and a second position relative to the outer rail 1.

[0038] When the middle rail 3 is at the retracted position, the actuating end of the elastic structure 5 elastically abuts against the middle rail 3, i.e., the first position; when the middle rail 3 is at the extended position, the actuating end of the elastic structure 5 is placed in the locking groove 31 on the middle rail 3, i.e., the second position; when the middle rail 3 moves from the extended position to the retracted position, the first guide surface 412 contacts and pushes the actuating end of the elastic structure 5 to disengage from the locking groove 31, so that the actuating end of the elastic structure 5 switches from the second position to the first position.

[0039] In this embodiment, when the middle rail 3 needs to be extended, it is pushed to move relative to the outer rail 1. As the middle rail 3 extends, the actuator of the elastic structure 5 slides along the surface of the middle rail 3. When the middle rail 3 reaches the extension point, the actuator of the elastic structure 5 is positioned precisely at the locking groove 31 on the middle rail 3, and under the elastic action, it is embedded in or extends out of the locking groove 31, in the second position. At this time, the middle rail 3 is locked by the cooperation of the actuator of the elastic structure 5 and the locking groove 31, maintaining the extended state, which facilitates the subsequent relative sliding between the inner rail 2 and the middle rail 3.

[0040] When the middle rail 3 needs to move from the extension point to the retraction point, the first guide surface 412 on the tripping structure 4 will contact and push the actuating end of the elastic structure 5. Under the action of the first guide surface 412, the actuating end of the elastic structure 5 disengages from the locking groove 31 and switches from the second position to the first position, so that the middle rail 3 can smoothly retract to the retraction point.

[0041] In summary, existing slide rail structures with rear positioning / locking structures on the middle rail 3 have limited design space. However, the slide rail structure of this application places the release structure 4 on the middle rail 3 and the elastic structure 5 on the outer rail 1. The elastic structure 5, as the main driving component for locking the middle rail 3 and the outer rail 1 (equivalent to the rear positioning structure in the prior art), has greater design space on the outer rail 1, facilitating more flexible design and improvement. Therefore, the limited design space of traditional structures leads to a high probability of structural failure. This slide rail structure of the present application, through optimized design, increases the design space, reduces structural failure problems caused by insufficient design space, and improves the overall stability and reliability of the structure.

[0042] Furthermore, designing in confined spaces increases manufacturing costs. The slide rail structure of this application increases design space, reduces the difficulty and complexity of the manufacturing process, and thus lowers manufacturing costs. Moreover, traditional structures are difficult to disassemble after failure, and may even cause jamming or direct damage. The elastic structure 5 is designed on the outer rail 1, making it relatively easy to disassemble and maintain the elastic structure 5 even in the event of structural failure of the middle rail 3. This facilitates the disassembly of the middle rail 3 and the outer rail 1, reducing maintenance costs and time.

[0043] In some practical applications, the elastic structure 5 can be implemented using at least the following two methods:

[0044] First implementation of elastic structure 5: Refer to Figures 2 to 8As shown, the elastic structure 5 includes a mounting bracket 51, a locking block 52, and an elastic element 53. The mounting bracket 51 is mounted on the outer rail 1; the locking block 52 is at least partially slidably connected to the mounting bracket 51, and the locking block 52 is the actuating end of the elastic structure 5; the elastic element 53 is disposed between the mounting bracket 51 and the locking block 52; when the middle rail 3 is in the retracted position, the elastic element 53 elastically pushes the locking block 52 against the middle rail 3; when the middle rail 3 is in the extended position, the elastic element 53 elastically pushes the locking block 52 into the locking groove 31 on the middle rail 3.

[0045] Specifically, the locking block 52 is at least partially located within the mounting groove 11; the mounting bracket 51 has a plurality of sliding grooves 511, and the locking block 52 is provided with a sliding part 521 that is slidably connected to the plurality of sliding grooves 511; when the locking block 52 is elastically placed within the locking groove 31, the plurality of sliding parts 521 all abut against the outer side of the outer rail 1.

[0046] The installation of the elastic element 53 is achieved as follows: the mounting bracket 51 has a first pillar block 512, and the locking block 52 has a second pillar block 522 corresponding to the first pillar block 512; the elastic element 53 is configured as a compression spring, with its two ends respectively sleeved on the first pillar block 512 and the second pillar block 522. By using the method of having both ends of the compression spring sleeved on the first pillar block 512 of the mounting bracket 51 and the second pillar block 522 of the locking block 52, the installation of the compression spring is ensured to be secure, preventing it from easily falling off or shifting, thus guaranteeing the stable transmission of elastic force, thereby enabling the locking block 52 to accurately perform its pressing and locking functions.

[0047] In this embodiment, the elastic structure 5 consists of a mounting bracket 51, a locking block 52, and an elastic element 53 (compression spring). When the middle rail 3 is in the retracted position, the compression spring is under a certain compression state, which elastically pushes the locking block 52, causing the locking block 52 to abut against the middle rail 3. At this time, the locking block 52 can slide within the sliding groove 511 of the mounting bracket 51 through its sliding part 521. When the middle rail 3 is pushed out, the locking block 52 slides along the surface of the middle rail 3, and the compression spring remains compressed. When the middle rail 3 reaches the extended position, the locking block 52 is aligned with the locking groove 31 on the middle rail 3, and the elastic force of the compression spring pushes the locking block 52 into the locking groove 31, achieving locking after the middle rail 3 is extended. At this time, the sliding part 521 abuts against the outer side of the outer rail 1 to achieve limiting and maintain the stability of the structure.

[0048] When the middle rail 3 moves from the extension point to the retraction point, the first guide surface 412 of the release structure 4 pushes the locking block 52, causing the locking block 52 to overcome the elastic force of the compression spring and disengage from the locking groove 31. The locking block 52 slides in the sliding groove 511 and returns to the initial position against the middle rail 3, thereby realizing the smooth retraction of the middle rail 3.

[0049] Second implementation of elastic structure 5: Refer to Figure 1 , Figures 8 to 10 As shown, the elastic structure 5 is configured as a spring piece 54, the outer rail 1 has a mounting groove 11, one end of the spring piece 54 is fixedly mounted on the outer side of the outer rail 1, the other end of the spring piece 54 is a free end, and the inner side of the free end has a limiting member 55, which is the actuating end of the elastic structure 5.

[0050] When the middle rail 3 is in the retracted position, the limiting member 55 is at least partially inserted into the mounting groove 11 and abuts against the middle rail 3 under the action of the spring piece 54; when the middle rail 3 is in the extended position, the limiting member 55 is placed in the locking groove 31 on the middle rail 3 under the action of the spring piece 54.

[0051] The working principle of the elastic structure 5 in the second embodiment: This elastic structure 5 uses a spring sheet 54 as the main elastic component. When the middle rail 3 is in the retracted position, the spring sheet 54, due to its own elastic properties, will exert a force on the limiting member 55 at its free end. The limiting member 55 at least partially penetrates the mounting groove 11 on the outer rail 1 and is tightly pressed against the middle rail 3 under the action of the spring sheet 54. At this time, the contact between the limiting member 55 and the middle rail 3 forms a certain constraint, so that the middle rail 3 remains relatively stable in the retracted state and will not easily slide. During the pulling process, a certain pulling force is also required, which has a damping feel.

[0052] When the middle rail 3 is pushed outward from the retraction point, the middle rail 3 will move relative to the limiting member 55. The limiting member 55 slides relative to the surface of the middle rail 3. As the middle rail 3 gradually reaches the extension point, the limiting member 55 is aligned with the locking groove 31 on the middle rail 3. At this time, the elastic force of the spring piece 54 pushes the limiting member 55 into the locking groove 31, realizing the locking of the middle rail 3 after extension and ensuring the stability of the middle rail 3 in the extended state.

[0053] When the middle rail 3 needs to retract from the extended position, the first guide surface 412 of the tripping structure 4 will contact the limiting member 55. The first guide surface 412 pushes the limiting member 55, causing the limiting member 55 to overcome the elastic force of the spring piece 54 and disengage from the locking groove 31. After the limiting member 55 leaves the locking groove 31, the middle rail 3 can smoothly move towards the retraction point and return to the initial retracted state.

[0054] Compared to the first embodiment, which includes multiple components such as a mounting bracket 51, a locking block 52, and an elastic element 53, the second embodiment of the elastic structure 5, consisting of only a spring 54 and a limiting element 55, is simpler. This simple structure occupies less space, which is a significant advantage for space-constrained slide rail applications, such as small chassis or equipment with high space requirements. Furthermore, the cost of the spring 54 is relatively low, effectively reducing the overall production cost of the slide rail structure. One end of the spring 54 only needs to be fixedly installed on the outside of the outer rail 1, making installation relatively simple.

[0055] Furthermore, the spring 54 has good elasticity and flexibility, and can quickly respond to the extension and retraction of the middle rail 3. Under the action of the spring 54, the limiting member 55 can quickly engage or disengage with the locking groove 31 on the middle rail 3, making the locking and unlocking process of the middle rail 3 smoother.

[0056] In some practical applications, based on any of the above implementation methods: Refer to Figures 2 to 8 As shown, the release structure 4 includes a movable sliding cover 41 and a second spring 42; the movable sliding cover 41 is slidably connected to the slide groove 32 on the middle rail 3 along the length direction of the middle rail 3, and the first guide surface 412 is located on the movable sliding cover 41; the second spring 42 is installed inside the slide groove 32 to push the movable sliding cover 41 against one end of the slide groove 32.

[0057] The movable sliding cover 41 includes an upper cover plate 411 and a lower cover plate 413. The upper cover plate 411 is located in the gap between the middle rail 3 and the outer rail 1, and the first guide surface 412 is disposed on the upper cover plate 411. The lower cover plate 413 is located in the gap between the middle rail 3 and the inner rail 2 and is fixedly connected to the upper cover plate 411. A second guide surface 414 is also formed on the lower cover plate 413. When the middle rail 3 moves from the extension point to the retraction point, the second guide surface 414 first contacts and pushes the execution end of the elastic structure 5 to at least partially disengage from the locking groove 31. Subsequently, the first guide surface 412 contacts and pushes the execution end of the elastic structure 5 to completely disengage from the locking groove 31, so that the execution end of the elastic structure 5 switches from the second position to the first position.

[0058] In normal operation, the second spring 42 is installed inside the groove 32 of the middle rail 3, which pushes the movable sliding cover 41 against one end of the groove 32. At this time, the movable sliding cover 41 is in a relatively stable initial position. When the middle rail 3 moves from the extended point to the retracted point, the movable sliding cover 41 moves together with the middle rail 3. The second guide surface 414 on the lower cover plate 413 first contacts the actuating end of the elastic structure 5. Due to the movement of the middle rail 3, the second guide surface 414 applies a thrust to the actuating end of the elastic structure 5, causing the actuating end to at least partially disengage from the locking groove 31. During this process, the elastic structure 5 undergoes a certain degree of elastic deformation. As the middle rail 3 continues to retract, the first guide surface 412 on the upper cover plate 411 then contacts the actuating end of the elastic structure 5. The first guide surface 412 further pushes the actuating end, causing it to completely disengage from the locking groove 31. At this time, the execution end of the elastic structure 5 switches from the second position (placed in the locking groove 31) to the first position (elastically abutting against the middle rail 3), and the middle rail 3 can smoothly retract to the retraction point.

[0059] By setting a second guide surface 414 to first disengage the actuating end of the elastic structure 5 from the locking groove 31, and then using the first guide surface 412 to completely disengage it from the locking groove 31, this step-by-step disengagement method makes the disengagement process smoother. It avoids structural damage or jamming caused by excessive force at the moment of disengagement, improving the reliability and stability of the disengagement operation. The upper cover plate 411 of the movable sliding cover 41 is located in the gap between the middle rail 3 and the outer rail 1, and the lower cover plate 413 is located in the gap between the middle rail 3 and the inner rail 2, making full use of the internal space of the slide rail structure. The second spring 42 ensures that the movable sliding cover 41 can automatically reset regardless of whether it moves during the extension and retraction of the middle rail 3.

[0060] In some practical applications, the first guide surface 412 and / or the second guide surface 414 are configured as arc-shaped ramps; the actuating end of the elastic structure 5 has a first inclined surface 56, and the part of the movable sliding cover 41 that contacts the locking block 52 is the first inclined surface 56.

[0061] In this embodiment, combining the working process of the slide rail structure and the release structure 4 described above, when the middle rail 3 moves from the extension point to the retraction point, the second guide surface 414 and the first guide surface 412 (arc-shaped ramp) of the lower cover plate 413 sequentially contact the first inclined surface 56 of the actuating end of the elastic structure 5. The design of the arc-shaped ramp makes the entire movement process relatively smooth, avoiding sudden impacts. Compared with right angles or sharp structures, this arc and ramp design can reduce wear on the contact parts and extend the service life of the components. In addition, the cooperation between the arc-shaped ramp and the first inclined surface 56 also makes the release and locking operations smoother and reduces jamming.

[0062] In some practical applications, a pusher 21 protruding from the surface of the inner rail 2 is also fixedly provided on the inner rail 2 (e.g., Figure 11 When the inner rail 2 slides relative to the middle rail 3, the push block 21 pushes the movable sliding cover 41, causing the middle rail 3 to move from the extended point to the retracted point. When the server needs to be pushed back into the rack, the operator pushes the server, causing the inner rail 2 to slide inward relative to the middle rail 3 first. The push block 21 on the inner rail 2 moves with the inner rail 2. When the push block 21 contacts the movable sliding cover 41, it causes the middle rail 3 and the release structure 4 (composed of the movable sliding cover 41 and the second spring 42) to move together. The second guide surface 414 on the lower cover plate 413 first contacts the execution end of the elastic structure 5, pushing the execution end of the elastic structure 5 at least partially disengage from the locking groove 31. Then, the first guide surface 412 on the upper cover plate 411 continues to push the execution end of the elastic structure 5 completely disengage from the locking groove 31, thereby unlocking the middle rail 3. The push block 21 continues to push, and the middle rail 3 moves towards the retracted point.

[0063] If, during the above process, the actuating end of the elastic structure 5 becomes stuck due to pressure friction with the side wall of the locking groove 31 on the middle rail 3, and the push block 21 continues to push, the movable sliding cover 41, being slidably connected along the sliding groove 32 on the middle rail 3, will compress the second spring 42 within the sliding groove 32 and slide. This sliding allows the first guide surface 412 and the second guide surface 414 of the movable sliding cover 41 to continuously apply force to the actuating end of the elastic structure 5, disengaging the actuating end of the elastic structure 5 from the locking groove 31. During this process, the movement of the movable sliding cover 41 provides a certain buffer to avoid a feeling of sticking and affecting the user's experience.

[0064] In some practical applications, the tripping structure 4 also has a third guide surface 43 (e.g., Figure 7 As shown, it is generally set as a chamfered, sloping surface. When the middle rail 3 moves from the retracted point to the extended point, the third guide surface 43 first contacts and pushes the locking block away from the middle rail 3 and against the release structure 4 until the locking block reaches the locking groove 31 and is placed inside the locking groove 31. During the process of the middle rail 3 moving from the retracted point to the extended point, if the locking block does not first leave the middle rail 3 and directly enters the locking groove 31, the locking block will generate greater friction with the surface of the middle rail 3 and the edge of the locking groove 31, accelerating the damage of the components.

[0065] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A slide rail structure, characterized in that, The slide rail includes an outer rail (1), an inner rail (2), and a middle rail (3) located between the outer rail (1) and the inner rail (2). The middle rail (3) is slidably connected to the outer rail (1), and the inner rail (2) is slidably connected to the middle rail (3). The middle rail (3) has a retraction point and an extension point relative to the outer rail (1). The slide rail structure also includes: The tripping structure (4) is disposed on the middle rail (3), and the tripping structure (4) has a first guide surface (412). An elastic structure (5) is installed on the outer rail (1), and the actuating end of the elastic structure (5) moves elastically between a first position and a second position relative to the outer rail (1). When the middle rail (3) is at the retracted position, the actuating end of the elastic structure (5) elastically abuts against the middle rail (3), i.e., the first position; when the middle rail (3) is at the extended position, the actuating end of the elastic structure (5) is placed in the locking groove (31) on the middle rail (3), i.e., the second position; when the middle rail (3) moves from the extended position to the retracted position, the first guide surface (412) contacts and pushes the actuating end of the elastic structure (5) to disengage from the locking groove (31), so that the actuating end of the elastic structure (5) switches from the second position to the first position.

2. The slide rail structure according to claim 1, wherein The elastic structure (5) includes: Mounting bracket (51) is installed on outer rail (1); The locking block (52) is at least partially slidably connected to the mounting bracket (51); An elastic element (53) is disposed between the mounting bracket (51) and the locking block (52); When the middle rail (3) is in the retracted position, the elastic element (53) elastically pushes the locking block (52) against the middle rail (3); when the middle rail (3) is in the extended position, the elastic element (53) elastically pushes the locking block (52) into the locking groove (31) on the middle rail (3).

3. The slide rail structure according to claim 2, wherein The outer rail (1) also has a mounting groove (11), and the locking block (52) is at least partially located in the mounting groove (11); the mounting bracket (51) has a plurality of sliding grooves (511), and the locking block (52) is provided with a sliding part (521) that is slidably connected to the plurality of sliding grooves (511); when the locking block (52) is elastically placed in the locking groove (31), the plurality of sliding parts (521) all abut against the outer side of the outer rail (1).

4. The slide rail structure according to claim 2, wherein The mounting bracket (51) has a first pillar block (512), and the locking block (52) has a second pillar block (522) corresponding to the first pillar block (512); the elastic element (53) is configured as a compression spring, and the two ends of the compression spring are respectively sleeved on the first pillar block (512) and the second pillar block (522).

5. The slide rail structure according to claim 1, wherein The elastic structure (5) is configured as a spring piece (54), the outer rail (1) has a mounting groove (11), one end of the spring piece (54) is fixedly installed on the outside of the outer rail (1), the other end of the spring piece (54) is a free end, and the inner side of the free end has a limiting member (55), the limiting member (55) is the execution end of the elastic structure (5); When the middle rail (3) is in the retracted position, the limiting member (55) is at least partially inserted into the mounting groove (11) and abuts against the middle rail (3) under the action of the spring piece (54); when the middle rail (3) is in the extended position, the limiting member (55) is placed in the locking groove (31) on the middle rail (3) under the action of the spring piece (54).

6. The slide rail structure according to claim 2 or 5, wherein The tripping structure (4) includes: A movable sliding cover (41) is slidably connected to a groove (32) on the middle rail (3) along the length of the middle rail (3); The second spring (42) is installed inside the slide groove (32) to push the movable cover (41) against one end of the slide groove (32); The movable sliding cover (41) includes: The upper cover plate (411) is located in the gap between the middle rail (3) and the outer rail (1), and the first guide surface (412) is disposed on the upper cover plate (411); The lower cover plate (413) is located in the gap between the middle rail (3) and the inner rail (2) and is fixedly connected to the upper cover plate (411). A second guide surface (414) is also formed on the lower cover plate (413). When the middle rail (3) moves from the extension point to the retraction point, the second guide surface (414) first contacts and pushes the execution end of the elastic structure (5) to at least partially disengage from the locking groove (31); then, the first guide surface (412) contacts and pushes the execution end of the elastic structure (5) to completely disengage from the locking groove (31), so that the execution end of the elastic structure (5) switches from the second position to the first position.

7. The slide rail structure according to claim 6, wherein The first guide surface (412) and / or the second guide surface (414) are configured as arc-shaped ramps; the actuating end of the elastic structure (5) has a first ramp (56), and the part where the movable sliding cover (41) contacts the locking block (52) is the first ramp (56).

8. The slide rail structure according to claim 6, wherein The inner rail (2) is also fixedly provided with a push block (21) protruding from the surface of the inner rail (2); when the inner rail (2) slides relative to the middle rail (3), the push block (21) pushes the movable sliding cover (41) to drive the middle rail (3) to move from the extension point to the retraction point.

9. The slide rail structure according to claim 2, wherein The release structure (4) also has a third guide surface (43); when the middle rail (3) moves from the retraction point to the extension point, the third guide surface (43) first contacts and pushes the execution end of the elastic structure (5) to disengage from the middle rail (3) and abut against the release structure (4) until the lock block reaches the lock groove (31) position and is placed in the lock groove (31).

Images