Slide rail for server cabinet

Abstract

The utility model discloses a slide rail for server cabinet, including main slide rail subassembly, support, fixed plate, telescopic plate, elastic part, the support includes front support, rear support fixed plate fixed installation front support, telescopic plate fixed installation rear support, the second board surface fixed plate has the baffle, and one end of elastic part is close to the baffle, and the other end of elastic part is close to the front end of telescopic plate, in the process of installing slide rail, first need accurate alignment and lean on rear stand of slide rail's rear support part, push dynamic telescopic plate and contract inwards, and compress elastic part, and the front support synchronous alignment and lean on the front stand, through such operation, whole slide rail is installed between the front stand and rear stand in the predetermined position stably, and this elastic close mechanism ensures that slide rail can keep firm in the preliminary installation stage, effectively prevents the displacement or the falling situation of slide rail in the subsequent operation process, realizes the preliminary fixation of slide rail.

Description

Technical Field

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

[0002] Server racks are rack-mount enclosures specifically designed for the centralized installation, management, and protection of various server devices. As an indispensable infrastructure in server rooms, server racks not only provide a secure and stable operating environment for servers but also effectively utilize space resources and achieve standardized equipment management. Among the many components of a server rack, racks are one of the most frequently used key components. These racks are typically installed inside the server rack via slide rails. This installation method allows technicians to easily and smoothly remove the rack, along with the server equipment it carries, from the rack for maintenance or replacement, and then smoothly push it back into the rack.

[0003] The slide rails are installed inside the server rack between the front and rear vertical columns. During actual installation, technicians face a challenging problem: they must use one hand to continuously support the slide rail to maintain its precise positioning while simultaneously using the other hand to tighten screws. This method not only demands significant physical strength from the technicians but is also prone to hand fatigue leading to positioning errors, causing numerous inconveniences throughout the assembly process and ultimately affecting the overall assembly efficiency and quality of the server rack. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a slide rail for a server rack, including a main slide rail assembly, a bracket, a fixed plate, a telescopic plate, and an elastic element; the bracket includes a front bracket and a rear bracket, which are used to connect to the uprights of the server rack; the front bracket is fixedly installed at the front end of the fixed plate, and the fixed plate includes a first plate surface and a second plate surface. The main slide rail assembly is fixedly installed on the first plate surface, and a baffle is fixedly installed on the second plate surface; the telescopic plate is slidably mounted on the second plate surface, allowing the telescopic plate to move back and forth relative to the fixed plate, and the telescopic plate and the fixed plate are parallel to each other; the rear bracket is fixedly installed at the rear end of the telescopic plate; one end of the elastic element abuts against the baffle, and the other end of the elastic element abuts against the front end of the telescopic plate.

[0005] According to some embodiments of this utility model, in order to improve the smoothness of the telescopic plate moving back and forth relative to the fixed plate, U-shaped folds are provided at the upper and lower ends of the fixed plate, and two first U-shaped grooves are bent towards the second plate surface; U-shaped folds are provided at the upper and lower ends of the telescopic plate, and the U-shaped folds are installed inside the U-shaped folds, so that the U-shaped folds slide within the U-shaped folds; at the same time, since the U-shaped folds and the U-shaped folds both have arc surfaces and are in contact with each other, the movement of the telescopic plate relative to the fixed plate is smoother.

[0006] According to some embodiments of the present invention, the main slide rail assembly includes a housing, a middle rail, and a middle rail, wherein the housing is fixed to the first plate surface, the middle rail is slidably mounted on the housing, and the middle rail is slidably mounted inside the middle rail; in use, the middle rail is connected to the bracket, and when the bracket is pulled out, the middle rail is pulled out from the middle rail, and the middle rail is pulled out from the housing.

[0007] Because the equipment is placed on the bracket, it will increase the weight, which will make the middle rail very dry and not smooth when it is pulled out. Therefore, a first ball bearing assembly and a second ball bearing assembly are installed to increase the smoothness of the pull-out.

[0008] According to some embodiments of the present invention, the first ball bearing is assembled between the outer shell and the middle rail; specifically, the upper and lower ends of the outer shell are respectively provided with an upper arc-shaped flange and a lower arc-shaped flange; the upper and lower ends of the middle rail are respectively provided with an upper arc-shaped recess and a lower arc-shaped recess; the first ball bearing assembly is installed between the upper arc-shaped flange and the upper arc-shaped recess, and between the lower arc-shaped flange and the lower arc-shaped recess.

[0009] According to some embodiments of this utility model, the second ball bearing assembly is installed between the middle rails; the upper and lower ends of the middle rails are respectively provided with an upper arc-shaped recess II and a lower arc-shaped recess II; the upper and lower ends of the middle rails are respectively provided with an upper arc-shaped recess III and a lower arc-shaped recess III; the second ball bearing assembly is installed between the upper arc-shaped recess II and the upper arc-shaped recess III, and between the lower arc-shaped recess II and the lower arc-shaped recess III, and the second ball bearing assembly is mounted on the ball bearing frame.

[0010] According to some embodiments of the present invention, a first locking component is installed between the middle rails to limit the length of the middle rail that is pulled out from the middle rail.

[0011] According to some embodiments of the present invention, the first locking assembly includes a locking block and a trigger. The locking block is disposed on the middle rail and is located at the front of the middle rail. The rear of the trigger is rotatably mounted on the middle rail. The top of the trigger is provided with a groove, which contains the locking block. A first window is opened on the middle rail, and the front end of the trigger is exposed by the first window. A limiting plate is provided in the first window, and the limiting plate is located behind the front end of the trigger.

[0012] According to some embodiments of this utility model, when the middle rail is pulled out, the trigger moves with the middle rail. When the length of the middle rail pulled out reaches the maximum length, the groove moves to the position of the locking block, so that the locking block enters the groove, thereby restricting the middle rail from being pulled out. When it is necessary to reset, the front end of the trigger is pushed down through the first window, so that the trigger flips down and the locking block is disengaged from the groove, thereby restoring the movement of the middle rail and allowing it to retract back into the middle rail.

[0013] According to some embodiments of this utility model, a fixed notch is provided at the rear end of the trigger, and the front end of the trigger elastic element is inserted into the fixed notch. The rear end of the trigger elastic element is fixed on the middle rail. When the locking block enters the fixed notch along the upper edge of the trigger, the elastic force of the trigger elastic element keeps the trigger in an upward tilted state and keeps the locking block in the fixed notch.

[0014] According to some embodiments of this utility model, a second locking component is installed between the middle rail and the outer shell to limit the length of the middle rail pulled out from the outer shell.

[0015] According to some embodiments of this utility model, a second window is opened on the middle rail; the second locking assembly includes a swing buckle plate and a locking plate, the front end of the swing buckle plate rotates on the middle rail, and a buckle is provided above the rear end of the swing buckle plate, the buckle passing through the second window; the locking plate is fixed to the outer shell, and a locking slot is provided on the locking plate.

[0016] According to some embodiments of this utility model, a lever is provided below the rear end of the swing buckle plate, and a protrusion is provided on the rail core. When the middle rail retracts to its original position, the protrusion pushes the lever, causing the lever to swing upward, thereby disengaging the buckle from the lock opening and unlocking it. The middle rail can then retract back into the outer shell to reset.

[0017] This utility model has at least the following beneficial effects: 1. During the installation of the slide rail, firstly, the rear bracket of the slide rail needs to be accurately aligned and pressed against the rear column. At this time, the operator needs to apply appropriate pushing force. This action will cause the telescopic plate to retract inward, compressing the elastic element installed inside. Simultaneously, the front bracket of the slide rail also needs to be aligned and pressed against the front column. Through this operation, the entire slide rail is securely installed in the predetermined position between the front and rear columns.

[0018] During this process, the compressed elastic elements generate a continuous elastic restoring force. This elastic force acts on the front and rear supports respectively, continuously pushing them against the corresponding front and rear columns to form a stable clamping state. This elastic clamping mechanism ensures that the slide rail remains stable during the initial installation stage, effectively preventing displacement or falling during subsequent operations, thus achieving initial fixation of the slide rail.

[0019] After initial fixing, technicians need to use fastening screws for final securing; simultaneously, the rear bracket needs to be fixed to the rear column using the same method. This dual-fixing method not only ensures the reliability of the slide rail installation but also greatly simplifies the installation process. Since the entire installation process does not require single-handed operation, it fully utilizes the combined efforts of both hands, significantly improving the assembly efficiency of the slide rail while reducing operational difficulty and the probability of errors.

[0020] 2. When the slide rail is extended forward, the middle rail is pulled forward from the outer shell. The middle rail will not slide out from within the middle rail. After the middle rail is pulled out from the outer shell to its maximum length, the second locking component locks and fixes the position of the middle rail, and only then can the middle rail be pulled out. This realizes the sequential extraction of the middle rails.

[0021] 3. When closing the slide rail, pull the front end of the trigger downward to unlock the first locking component, allowing the middle rail to slide backward and reset within the middle rail. At the same time, the second locking component locks and fixes the position of the middle rail. At this time, the middle rail will not slide backward and reset within the housing. After the middle rail has fully slid into the housing, the middle rail unlocks the second locking component, allowing the middle rail to slide backward and reset within the housing. This achieves the sequence of middle rails resetting sequentially, thus minimizing the sliding distance of the middle rail bearing the load alone, thereby ensuring the excellent load-bearing capacity of the slide rail.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the slide rail in an embodiment of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the slide rail in an embodiment of the present utility model. Figure 2 ; Figure 3 This is a schematic diagram of the slide rail explosion according to an embodiment of the present utility model; Figure 4 This is a side view of the slide rail according to an embodiment of the present utility model; Figure 5 for Figure 4 Schematic diagram of the AA section; Figure 6 for Figure 4 Schematic diagram of the BB cross section; Figure 7 This is a schematic diagram of the main slide rail assembly in its unfolded state according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the combined state of the middle rail and rail core in an embodiment of this utility model; Figure 9 for Figure 8 Enlarged diagram of D Figure 4 ; Figure 10 This is a schematic diagram of the combined state of the rail core, trigger, and trigger elastic element according to an embodiment of the present utility model; Figure 11 This is a schematic diagram of the trigger and locking block in the locked state according to an embodiment of the present utility model; Figure 12 for Figure 7 Enlarged diagram of C in the middle; Figure 13 This is an exploded view of the middle rail and outer shell of an embodiment of this utility model; Figure 14 This is a schematic diagram of the combined state of the middle rail and the outer shell in an embodiment of this utility model; Figure 15 for Figure 14 Enlarged diagram of E in the middle; Figure 16 This is a schematic diagram of the installation state of an embodiment of the present invention. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, "more than" means two or more, and "greater than," "less than," "exceeding," etc., are understood to exclude the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0026] Reference Figures 1 to 3 16. A slide rail for a server rack, including a main slide rail assembly, a bracket, a fixing plate 300, a telescopic plate 400, and an elastic element 500; the bracket includes a front bracket 100 and a rear bracket 200, which are used to connect to the uprights of the server rack.

[0027] The front bracket 100 is fixedly installed at the front end of the fixed plate 300. The fixed plate 300 includes a first plate surface 301 and a second plate surface 302. The main slide rail assembly is fixedly installed on the first plate surface 301, and a baffle 310 is fixed on the second plate surface 302.

[0028] The telescopic plate 400 is slidably mounted on the second plate surface 302, so that the telescopic plate 400 moves back and forth relative to the fixed plate 300, and the telescopic plate 400 and the fixed plate 300 are parallel to each other. The rear bracket 200 is fixedly installed at the rear end of the telescopic plate 400.

[0029] One end of the elastic element 500 is pressed against the baffle 310, and the other end of the elastic element 500 is pressed against the front end of the telescopic plate 400.

[0030] The main slide rail assembly is fixed to both sides of the bracket with screws. Next, the slide rail is connected to the server rack's uprights. During installation, the rear bracket 200 of the slide rail must first be accurately aligned and pressed against the rear upright. At this point, the operator applies appropriate force, which causes the telescopic plate 400 to retract inward, compressing the internal elastic element 500. Simultaneously, the front bracket 100 of the slide rail must also be aligned and pressed against the front upright. Through this process, the entire slide rail is securely installed in the predetermined position between the front and rear uprights.

[0031] During this process, the compressed elastic element 500 generates a continuous elastic restoring force. This elastic force acts on the front support 100 and the rear support 200 respectively, continuously pushing them against the corresponding front and rear columns to form a stable clamping state. This elastic clamping mechanism ensures that the slide rail remains stable during the initial installation stage, effectively preventing displacement or falling of the slide rail during subsequent operations, thus achieving initial fixation of the slide rail.

[0032] After initial fixing, technicians need to use fastening screws for final securing. Specifically, the fastening screws are passed through the mounting holes of the front bracket 100 and firmly fixed to the front column; simultaneously, the rear bracket 200 is fixed to the rear column using the same method. This dual-fixing method not only ensures the reliability of the slide rail installation but also greatly simplifies the installation process. Since the entire installation process does not require single-handed operation, it fully utilizes both hands, significantly improving the assembly efficiency of the slide rail while reducing operational difficulty and the probability of errors.

[0033] Reference Figure 5 As shown, to improve the smoothness of the telescopic plate 400 moving back and forth relative to the fixed plate 300, a first U-shaped flange 320 is provided at both the upper and lower ends of the fixed plate 300, and the two first U-shaped grooves are bent towards the second plate surface 302; a second U-shaped flange 410 is provided at both the upper and lower ends of the telescopic plate 400, and the second U-shaped flange 410 is installed inside the first U-shaped flange 320, so that the second U-shaped flange 410 slides within the first U-shaped flange 320; at the same time, since the second U-shaped flange 410 and the first U-shaped flange 320 both have arc surfaces and are in contact with each other, the movement of the telescopic plate 400 relative to the fixed plate 300 is smoother.

[0034] Reference Figure 2 , 3As shown, the main slide rail assembly includes a housing 600, a middle rail 700, and a rail core 800. The housing 600 is fixed to the first plate 301, while the middle rail 700 is slidably mounted on the housing 600, and the rail core 800 is slidably mounted inside the middle rail 700. In use, the rail core 800 is connected to the bracket. When the bracket is pulled out, the rail core 800 is pulled out from the middle rail 700, and the middle rail 700 is pulled out from the housing 600.

[0035] Reference Figure 6 As shown, the equipment placed on the bracket will increase the weight, which will make it difficult and not smooth when the middle rail 700 and rail core 800 are pulled out. Therefore, the first ball bearing assembly 900 and the second ball bearing assembly 1000 are installed to increase the smoothness of the pull-out.

[0036] Reference Figure 6 As shown, the first ball bearing assembly 900 is installed between the outer casing 600 and the middle rail 700.

[0037] Specifically, the upper and lower ends of the outer shell 600 are respectively provided with an upper arc-shaped flange 610 and a lower arc-shaped flange 620; the upper and lower ends of the middle rail 700 are respectively provided with an upper arc-shaped recess 710 and a lower arc-shaped recess 720.

[0038] The first ball bearing assembly 900 is installed between the upper arc-shaped flange 610 and the upper arc-shaped recess 710, and between the lower arc-shaped flange 620 and the lower arc-shaped recess 720.

[0039] Reference Figure 6 As shown, the second ball bearing assembly 1000 is installed between the middle rail 700 and the rail core 800.

[0040] The upper and lower ends of the middle rail 700 are respectively provided with upper arc-shaped recess 2 730 and lower arc-shaped recess 2 740; the upper and lower ends of the rail core 800 are respectively provided with upper arc-shaped recess 3 810 and lower arc-shaped recess 3 820.

[0041] A second ball bearing assembly 1000 is installed between the upper arc-shaped recess 2 730 and the upper arc-shaped recess 3 810, and between the lower arc-shaped recess 2 740 and the lower arc-shaped recess 3 820. The second ball bearing assembly 1000 is mounted on the ball bearing frame 1100.

[0042] If the rail core 800 is pulled out of the middle rail 700 by too much length, the front of the rail core 800 will bear most of the weight of the equipment and bracket, causing the rail core 800 to deform, seriously affecting the service life of the slide rail, and even causing the connection between the bracket and the shaft core to detach, resulting in the risk of the equipment falling. Therefore, it is necessary to limit the length of the rail core 800 pulled out of the middle rail 700 so that the length of the rail core 800 pulled out does not exceed half of its own length.

[0043] Therefore, referring to Figure 7 , 8As shown, a first locking component 2000 is installed between the middle rail 700 and the rail core 800, which limits the length of the rail core 800 pulled out from the middle rail 700.

[0044] Reference Figures 9 to 11 As shown, specifically, the first locking assembly 2000 includes a locking block 2100 and a trigger 2200. The locking block 2100 is disposed on the middle rail 700 and is located at the front of the middle rail 700. The rear of the trigger 2200 is rotatably mounted on the rail core 800. The top of the trigger 2200 is provided with a groove 2300, which accommodates the locking block 2100. The rail core 800 has a first window 830, which exposes the front end of the trigger 2200. A limiting plate 840 is provided inside the first window 830 and is located behind the front end of the trigger 2200.

[0045] When the rail core 800 is pulled out from the middle rail 700, the trigger 2200 moves with the rail core 800. When the rail core 800 is pulled out to its maximum length, the groove 2300 moves to the position of the locking block 2100, so that the locking block 2100 enters the groove 2300, thereby restricting the rail core 800 from being pulled out. When it is necessary to reset, the front end of the trigger 2200 is pushed down through the first window 830, so that the trigger 2200 flips down and the locking block 2100 disengages from the groove 2300, thereby restoring the movement of the rail core 800 and allowing it to retract into the middle rail 700.

[0046] A fixing notch 2500 is provided at the rear end of the trigger 2200. The front end of the trigger elastic element 2400 is inserted into the fixing notch 2500, and the rear end of the trigger elastic element 2400 is fixed to the rail core 800. When the locking block 2100 enters the fixing notch 2500 along the upper edge of the trigger 2200, the elastic force of the trigger elastic element 2400 keeps the trigger 2200 in an upward tilted state, and keeps the locking block 2100 in the fixing notch 2500.

[0047] In addition, when the front end of the trigger 2200 is pulled down, the rear end of the trigger 2200 tilts upward, thereby lifting the front end of the trigger elastic member 2400 upward; when the front end of the trigger 2200 is released from being pulled down, the elastic force of the trigger elastic member 2400 presses down on the rear end of the trigger 2200, causing the trigger 2200 to return to its original position.

[0048] Reference Figure 7 , 12 As shown, a second locking component 3000 is installed between the middle rail 700 and the outer casing 600 to limit the length of the middle rail 700 from being pulled out of the outer casing 600.

[0049] When the slide rail is extended forward, the middle rail 700 is pulled forward from the outer casing 600, while the rail core 800 does not slide out from the middle rail 700. After the middle rail 700 is pulled out from the outer casing 600 to its maximum length, the second locking component 3000 locks and fixes the position of the middle rail 700, and the rail core 800 can then be pulled out, thus realizing the sequential extraction of the middle rail 700 and the rail core 800.

[0050] Conversely, when closing the slide rail, pulling the front end of the trigger 2200 downwards unlocks the rail core 800 first, allowing it to slide back and reset within the middle rail 700. At this time, the middle rail 700 will not slide back and reset within the outer casing 600. Once the rail core 800 has fully slid into the middle rail 700, the middle rail 700 unlocks the second locking component 3000, allowing it to slide back and reset within the outer casing 600. This achieves the sequential resetting order of the rail core 800 and the middle rail 700, minimizing the sliding distance of the rail core 800 under its own load, thus ensuring the excellent load-bearing capacity of the slide rail.

[0051] Reference Figures 13 to 15 As shown, specifically, a second window 760 is opened on the middle rail 700; the second locking assembly 3000 includes a swing buckle plate 3100 and a locking plate 3200. The front end of the swing buckle plate 3100 rotates on the middle rail 700, and a latch 3110 is provided above the rear end of the swing buckle plate 3100. The latch 3110 passes through the second window 760; the locking plate 3200 is fixed on the outer shell 600, and a locking slot 3400 is provided on the locking plate 3200.

[0052] As the swing plate 3100 moves with the middle rail 700, when the swing plate 3100 moves to the position of the locking plate 3200, the middle rail 700 reaches its maximum extension length. At this time, the latch 3110 is engaged in the locking slot 3400 to achieve locking and fixation.

[0053] Reference Figure 10 , 15 As shown, a lever 3120 is provided below the rear end of the swing plate 3100, and a protrusion 850 is provided on the rail core 800. When the middle rail 700 retracts to return to its original position, the protrusion 850 pushes the lever 3120, causing the lever 3120 to swing upward, thereby causing the latch 3110 to disengage from the lock opening 3400 and unlocking the lock. The middle rail 700 can then retract into the outer shell 600 to reset.

[0054] Let me explain the work steps in detail: Step 1: Secure the main slide rail assembly to both sides of the bracket using screws. Specifically, connect the rail core 800 to the bracket.

[0055] Step two: Accurately align and abut the rear bracket 200 of the slide rail against the rear column. At this time, the operator applies appropriate pushing force. This action will cause the telescopic plate 400 to retract inward, while compressing the elastic element 500 installed inside. At the same time, the front bracket 100 of the slide rail also needs to be aligned and abutted against the front column. This ensures that the entire slide rail is securely installed at the predetermined position between the front and rear columns.

[0056] Step 3: Use fastening screws to fix the front bracket 100 and the rear bracket 200 to the front column and the rear column respectively.

[0057] Step 4: Pull out the bracket and place the device on the bracket; after placement, the first locking component 2000 and the second locking component 3000 unlock in sequence, causing the bracket to be pushed back.

[0058] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one embodiment or example.

[0059] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A slide rail for a server rack, including a main slide rail assembly, characterized in that, Also includes: The bracket includes a front bracket (100) and a rear bracket (200), the front bracket (100) and the rear bracket (200) being used to connect to the uprights of the server rack; A fixing plate (300) is provided, with a front bracket (100) fixedly installed at the front end of the fixing plate (300). The fixing plate (300) includes a first plate surface (301) and a second plate surface (302). The main slide rail assembly is fixedly installed on the first plate surface (301), and a baffle plate (310) is fixed on the second plate surface (302). Telescopic plate (400), the telescopic plate (400) is slidably mounted on the second plate surface (302), so that the telescopic plate (400) moves back and forth relative to the fixed plate (300), and the telescopic plate (400) and the fixed plate (300) are parallel to each other, and the rear bracket (200) is fixedly installed at the rear end of the telescopic plate (400). An elastic element (500) is provided, one end of which is pressed against the baffle (310), and the other end of which is pressed against the front end of the telescopic plate (400).

2. The server rack slide rail according to claim 1, characterized in that, The upper and lower ends of the fixing plate (300) are provided with first U-shaped folds (320), and the two first U-shaped folds (320) are bent toward the second plate surface (302); The telescopic plate (400) is provided with a second U-shaped fold (410) at both the upper and lower ends, and the second U-shaped fold (410) slides within the first U-shaped fold (320).

3. The server rack slide rail according to claim 1, characterized in that, The main slide rail assembly includes a housing (600), a middle rail (700), and a rail core (800). The housing (600) is fixed on the first plate surface (301), the middle rail (700) is slidably mounted on the housing (600), and the rail core (800) is slidably mounted inside the middle rail (700).

4. The server rack slide rail according to claim 3, characterized in that, It also includes a first ball bearing assembly (900) and a second ball bearing assembly (1000), wherein the first ball bearing assembly (900) is installed between the outer shell (600) and the middle rail (700), and the second ball bearing assembly (1000) is installed between the middle rail (700) and the rail core (800).

5. The server rack slide rail according to claim 4, characterized in that, The upper and lower ends of the outer shell (600) are respectively provided with an upper arc-shaped flange (610) and a lower arc-shaped flange (620). The upper and lower ends of the middle rail (700) are respectively provided with an upper arc-shaped recess (710) and a lower arc-shaped recess (720). The first ball bearing assembly (900) is installed between the upper arc-shaped flange (610) and the upper arc-shaped recess (710), and between the lower arc-shaped flange (620) and the lower arc-shaped recess (720).

6. The server rack slide rail according to claim 4, characterized in that, The upper and lower ends of the middle rail (700) are respectively provided with an upper arc-shaped recess (730) and a lower arc-shaped recess (730). The upper and lower ends of the rail core (800) are respectively provided with an upper arc-shaped recess three (810) and a lower arc-shaped recess three (820). The second ball set (1000) is installed between the upper arc-shaped recess two (730) and the upper arc-shaped recess three (810), and between the lower arc-shaped recess two (740) and the lower arc-shaped recess three (820). The second ball set (1000) is mounted on the ball frame (1100).

7. The server rack slide rail according to claim 3, characterized in that, A first locking assembly (2000) is installed between the middle rail (700) and the rail core (800). The first locking assembly (2000) includes a locking block (2100) and a trigger (2200). The locking block (2100) is disposed on the middle rail (700) and is located at the front of the middle rail (700). The rear of the trigger (2200) is rotatably mounted on the rail core (800). The top of the trigger (2200) is provided with a groove (2300), which contains the locking block (2100). The rail core (800) has a first window (830), and the front end of the trigger (2200) is exposed by the first window (830). A limiting plate (840) is provided in the first window (830), and the limiting plate (840) is located behind the front end of the trigger (2200).

8. The server rack slide rail according to claim 7, characterized in that, The locking assembly also includes a trigger elastic element (2400), the rear end of the trigger (2200) is provided with a fixing notch (2500), the front end of the trigger elastic element (2400) is inserted into the fixing notch (2500), and the rear end of the trigger elastic element (2400) is fixed on the rail core (800).

9. The server rack slide rail according to claim 3, characterized in that, A second locking assembly (3000) is installed between the middle rail (700) and the outer shell (600), and a second window (760) is opened on the middle rail (700); the second locking assembly (3000) includes a swing buckle plate (3100) and a locking plate (3200), the front end of the swing buckle plate (3100) rotates on the middle rail (700), and a latch (3110) is provided above the rear end of the swing buckle plate (3100), and the latch (3110) passes through the second window (760); The locking plate (3200) is fixed to the outer shell (600), and the locking plate (3200) is provided with a locking slot (3400), which is used to engage the latch (3110).

10. The server rack slide rail according to claim 9, characterized in that, A lever (3120) is provided below the rear end of the swing plate (3100), and a protrusion (850) is provided on the rail core (800). The protrusion (850) is used to push the lever (3120).

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