Slide rail device with buffering function

Abstract

A sliding rail device with a buffering function comprises a first sliding rail, a second sliding rail and a buffering unit. The first slide rail comprises a first end and a second end opposite to the first end. The second sliding rail is movably arranged on the first sliding rail and comprises a first buffering push block and a second buffering push block. The buffer unit comprises a first buffer assembly arranged at the first end. The second sliding rail can move between a folding position and an extending position, in the folding position, the second sliding rail is overlapped with the first sliding rail and does not protrude out of the first sliding rail, the second sliding rail can move towards the first end relative to the first sliding rail so as to extend out of the first sliding rail to reach the extending position, and in the process of moving from the folding position to the extending position, the second sliding rail can move towards the second end relative to the first sliding rail. In the process of moving from the extending position to the folding position, the first buffering push block abuts against and compresses the first buffering assembly so that the second sliding rail can be buffered, and in the process of moving from the extending position to the folding position, the second buffering push block abuts against and compresses the second buffering assembly so that the second sliding rail can be buffered.

Description

Technical Field

[0001] This utility model relates to a slide rail device, and more particularly to a slide rail device with a buffer function. Background Technology

[0002] The existing slide rail device consists of an outer rail, a middle rail, and an inner rail. Whether during extension or retraction, a buffering or deceleration mechanism is needed to make the middle rail and inner rail less prone to damage. Therefore, there is still room for improvement. Utility Model Content

[0003] The purpose of this invention is to provide a slide rail device with a buffer function that can solve at least one of the above-mentioned problems.

[0004] This utility model relates to a slide rail device with a buffer function, comprising a first slide rail, including a first end and a second end opposite to the first end; a second slide rail, movably disposed on the first slide rail, and including a first buffer push block and a second buffer push block; and a buffer unit, including a first buffer component disposed at the first end and a second buffer component disposed at the second end; the second slide rail can move between a retracted position and an extended position. In the retracted position, the second slide rail overlaps with the first slide rail without protruding from the first slide rail. The second slide rail can move relative to the first slide rail toward the first end to extend from the first slide rail to reach the extended position. During the movement from the retracted position to the extended position, the first buffer push block abuts against and compresses the first buffer component to buffer the second slide rail. During the movement from the extended position to the retracted position, the second buffer push block abuts against and compresses the second buffer component to buffer the second slide rail.

[0005] In some embodiments, the first slide rail forms a first buffer groove, and the first buffer assembly includes a first connecting piece disposed in the first buffer groove, a first mounting base disposed in the first connecting piece, a first cylinder disposed in the first mounting base and located in the first buffer groove, a first piston rod movably disposed in the first cylinder, and a first push block connected to the first piston rod, the first push block being able to abut against the first buffer push block.

[0006] In some embodiments, the first slide rail also forms a second buffer groove. The second buffer assembly includes a second connecting piece disposed in the second buffer groove, a second mounting base disposed in the second connecting piece, a second cylinder disposed in the second mounting base and located in the second buffer groove, a second piston rod movably disposed in the second cylinder, and a second push block connected to the second piston rod. The second push block can abut against the second buffer push block.

[0007] This utility model has at least the following effects: by means of the first buffer component being disposed at the first end, during the process of moving from the retracted position to the extended position, the first buffer push block abuts against and compresses the first buffer component to buffer the second slide rail, thereby preventing the first slide rail and the second slide rail from being impacted and extending the service life of the first slide rail and the second slide rail. Attached Figure Description

[0008] Other features and effects of this utility model will be clearly presented in the embodiments with reference to the accompanying drawings, wherein:

[0009] Figure 1 This is a perspective view of a first embodiment of the slide rail device of this utility model;

[0010] Figure 2 This is an exploded perspective view of the first embodiment;

[0011] Figure 3 This is an incomplete exploded perspective view of an outer rail and a buffer unit of the first embodiment;

[0012] Figure 4 This is an incomplete exploded perspective view of a middle track unit in the first embodiment;

[0013] Figure 5 This is an incomplete perspective view of an inner rail of the first embodiment;

[0014] Figure 6 This is an incomplete front view of the first embodiment, illustrating that the inner rail is in an inwardly retracted position relative to the middle rail, and the middle rail unit is in a middlely retracted position relative to the outer rail;

[0015] Figure 7 This is an incomplete front view of the first embodiment, illustrating the inner rail in an inwardly extended position relative to the middle rail;

[0016] Figure 8 This is an incomplete front view of the first embodiment, illustrating that the middle rail unit is in a protruding position relative to the outer rail;

[0017] Figure 9 This is a perspective view of a first embodiment of the slide rail device of the present invention, illustrating that the middle rail unit is in the middle extension position relative to the outer rail, and the inner rail is in the inner extension position relative to the middle rail.

[0018] Figure 10 This is an incomplete front view of the first embodiment, illustrating the middle rail unit in the extended position relative to the outer rail, and the inner rail in the retracted position relative to the middle rail.

[0019] Figure 11This is a perspective view of a second embodiment of the slide rail device of this utility model;

[0020] Figure 12 This is an exploded perspective view of the second embodiment;

[0021] Figure 13 This is an incomplete exploded perspective view of an outer rail and a buffer unit of the second embodiment;

[0022] Figure 14 This is an incomplete exploded perspective view of a middle track unit in the second embodiment;

[0023] Figure 15 This is an incomplete exploded perspective view of the middle track unit of the second embodiment from another viewpoint;

[0024] Figure 16 This is an incomplete perspective view of an inner rail of the second embodiment;

[0025] Figure 17 This is an incomplete front view of the second embodiment, illustrating that the inner rail is in an inwardly retracted position relative to the middle rail, and the middle rail unit is in a middlely retracted position relative to the outer rail;

[0026] Figure 18 This is an incomplete front view of the second embodiment, illustrating the inner rail in an inwardly extended position relative to the middle rail;

[0027] Figure 19 This is an incomplete front view of the second embodiment, illustrating that the middle rail unit is in a protruding position relative to the outer rail;

[0028] Figure 20 This is a perspective view of a second embodiment of the slide rail device of the present invention, illustrating that the middle rail unit is in the middle extension position relative to the outer rail, and the inner rail is in the inner extension position relative to the middle rail.

[0029] Figure 21 This is an incomplete front view of the second embodiment, illustrating the middle rail unit in the extended position relative to the outer rail, and the inner rail in the retracted position relative to the middle rail. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] See Figure 1 and Figure 2 The first embodiment of the slide rail device 10 with buffer function of this utility model is suitable for installation in a server rack (not shown) and can be installed in a server chassis (not shown). The slide rail device 10 includes an outer rail 1, a middle rail unit 2, an inner rail 3 and a buffer unit 4.

[0035] See Figure 2 and Figure 3 The outer rail 1 includes a first end 11, a second end 12 opposite to the first end 11, a movable surface 13 facing the middle rail unit 2, a middle protruding stop 14 disposed on the movable surface 13, a middle push-back stop 15 disposed on the movable surface 13, a first buffer groove 16 and a second buffer groove 17.

[0036] See Figure 2 and Figure 4The middle rail unit 2 includes a middle rail 21 movably disposed on the outer rail 1, a first switching member 22 pivotally disposed on the middle rail 21, a second switching member 23 pivotally disposed on the middle rail 21, a first elastic member 24, a second elastic member 25, and an inner stop member 26 disposed on the middle rail 21 near the first end 11. The middle rail 21 has a first movable groove 211, a second movable groove 212, a first mounting groove 213, a second mounting groove 214, a first buffer push block 215 extending toward the outer rail 1, and a second buffer push block 216 extending toward the outer rail 1. The first switching member 22 has a first flat plate portion 221 pivotally disposed on the middle rail 21, a first stop portion 222 extending from the lower side of the first flat plate portion 221 and passing through the first movable groove 211, and a first push portion 223 extending from the upper side of the first flat plate portion 221 away from the middle rail 21. The second switching member 23 has a second flat plate portion 231 pivotally mounted on the central rail 21, a second stop portion 232 extending from the lower side of the second flat plate portion 231 and passing through the second movable groove 212, and a second push portion 233 extending from the upper side of the second flat plate portion 231 away from the central rail 21. A first elastic member 24 is disposed in the first mounting groove 213 and abuts against the first flat plate portion 221. A second elastic member 25 is disposed in the second mounting groove 214 and abuts against the second flat plate portion 231.

[0037] See Figure 2 and Figure 5 The inner rail 3 is movably disposed on the middle rail 21. The inner rail 3 forms a middle outer unlocking push block 31, a middle outer push-back unlocking push block 32, and an inner middle stop block 33 that can be locked against the middle inner stop member 26.

[0038] See Figure 2 and Figure 3The buffer unit 4 includes a first buffer assembly 41 disposed at the first end 11 and a second buffer assembly 42 disposed at the second end 12. The first buffer assembly 41 includes a first connecting piece 411 disposed at the first buffer groove 16, a first mounting base 412 disposed at the first connecting piece 411, a first cylinder 413 disposed at the first mounting base 412 and located in the first buffer groove 16, a first piston rod 414 movably disposed at the first cylinder 413, and a first push block 415 connected to the first piston rod 414. The first push block 415 can abut against the first buffer push block 215. The second buffer assembly 42 includes a second connecting piece 421 disposed in the second buffer groove 17, a second mounting base 422 disposed in the second connecting piece 421, a second cylinder 423 disposed in the second mounting base 422 and located in the second buffer groove 17, a second piston rod 424 movably disposed in the second cylinder 423, and a second push block 425 connected to the second piston rod 424. The second push block 425 can abut against the second buffer push block 216.

[0039] See Figures 6 to 9 The inner rail 3 can move relative to the middle rail 21 in an inwardly retracted position and an inwardly extended position. In the inwardly retracted position, the inner rail 3 overlaps with the middle rail 21 without protruding from it, and the inner rail 3 can move towards the first end 11 to reach the inwardly extended position. In the inwardly extended position, the middle outer unlocking push block 31 pushes the first push part 223 to cause the first switching member 22 to pivot counterclockwise upward to release the blocking relationship between the middle extension stop block 14 and the first stop part 222, so that the middle rail 21 can move relative to the outer rail 1. The middle rail 21 can move relative to the outer rail 1 in a middle retracted position and a middle extension position. In the retracted position, the middle rail 21 overlaps with the outer rail 1 without protruding from the outer rail 1. The middle rail 21 can move towards the first end 11 to reach the extended position. In the extended position, the middle rail 21 protrudes relative to the outer rail 1. Because the middle outer push unlocking block 32 has moved away from the second switching member 23, the elastic restoring force of the second elastic member 25 will drive the second switching member 23 to pivot counterclockwise. The second stop 232 will then pivot upward, causing the second switching member 23 to be stopped by the middle push block 15, preventing the middle rail 21 from returning from the extended position to the retracted position. During the movement to the extended position, the first buffer push block 215 abuts against the first push block 415 and compresses the first buffer assembly 41, causing the first piston rod 414 to move towards the first cylinder 413. The middle rail 21 is thus buffered during the extension process. This completes the process of extending the middle rail 21 and the inner rail 3. See next... Figure 6 and Figure 10After the inner rail 3 moves from the inner extended position to the inner retracted position, the middle outer push unlocking push block 32 pushes the second push part 233 to make the second switching member 23 pivot downward to release the blocking relationship between the middle push block 15 and the second switching member 23. Only then can the middle rail 21 push back relative to the outer rail 1 and move from the middle extended position to the middle retracted position. At this time, because the first elastic member 24 is compressed when the first switching member 22 is pushed counterclockwise by the middle outer unlocking push block 31, the elastic recovery force generated will push the first switching member 22 to pivot clockwise, so that the first stop part 222 pivots downward and locks the middle extended block 14, which can prevent the middle rail 21 from extending relative to the outer rail 1. During the retraction process, the second buffer push block 216 abuts against the second push block 425 and compresses the second buffer assembly 42, causing the second piston rod 424 to move towards the second cylinder 423. The middle rail 21 is thus cushioned during the retraction process. This completes the process of retracting the middle rail 21 and the inner rail 3.

[0040] It should be noted that in this embodiment, the buffer unit 4 is disposed on the outer rail 1, meaning that the outer rail 1 is the first slide rail and the middle rail 21 is the second slide rail, but this is not a limitation. In other embodiments, it can also be disposed on the middle rail 21, meaning that the middle rail 21 is the first slide rail and the inner rail 3 is the second slide rail.

[0041] See Figures 11 to 13 A second embodiment of the slide rail device 10' with buffer function of this utility model is also suitable for installation in a server rack (not shown) and can be installed in a server chassis (not shown). The slide rail device 10' includes an outer rail 1, a middle rail unit 2', an inner rail 3, and a buffer unit 4. The second embodiment of the slide rail device 10' is similar to the first embodiment, except that the appearance of the middle rail unit 2' is different.

[0042] See Figure 12 , Figure 14 and Figure 15The middle rail unit 2' includes a middle rail 21' movably disposed on the outer rail 1, a first switching member 22 pivotally disposed on the middle rail 21', a second switching member 23 pivotally disposed on the middle rail 21', a first elastic member 24, a second elastic member 25, and an inner stop member 26 disposed on the middle rail 21' near the first end 11. The middle rail 21' includes an outer portion 2a movably disposed on the outer rail 1 and an inner portion 2b fixed to the outer portion 2a, and has a first movable groove 211, a second movable groove 212, a first mounting groove 213, a second mounting groove 214, a first buffer push block 215 extending toward the outer rail 1, and a second buffer push block 216 extending toward the outer rail 1, wherein the first buffer push block 215 and the second buffer push block 216 are formed in the outer portion 2a. This design can improve the structural strength of the middle rail 21'. The first switching member 22 has a first flat plate portion 221 pivotally mounted on the central rail 21', a first stop portion 222 extending from the lower side of the first flat plate portion 221 and passing through the first movable groove 211, and a first push portion 223 extending from the upper side of the first flat plate portion 221 away from the central rail 21'. The second switching member 23 has a second flat plate portion 231 pivotally mounted on the central rail 21', a second stop portion 232 extending from the lower side of the second flat plate portion 231 and passing through the second movable groove 212, and a second push portion 233 extending from the upper side of the second flat plate portion 231 away from the central rail 21'. A first elastic member 24 is disposed in the first mounting groove 213 and abuts against the first flat plate portion 221. A second elastic member 25 is disposed in the second mounting groove 214 and abuts against the second flat plate portion 231.

[0043] See Figure 12 and Figure 16 The inner rail 3 is movably disposed in the inner part 2b of the middle rail 21'. The inner rail 3 forms an outer unlocking push block 31, an outer push-back unlocking push block 32, and an inner stop block 33 that can be locked against the inner stop member 26.

[0044] See Figures 17 to 20The inner rail 3 can move relative to the middle rail 21' in an inwardly retracted position and an inwardly extended position. In the inwardly retracted position, the inner rail 3 overlaps with the middle rail 21' without protruding from it, and the inner rail 3 can move towards the first end 11 to reach the inwardly extended position. In the inwardly extended position, the middle outer unlocking push block 31 pushes the first push part 223 to cause the first switching member 22 to pivot upward to release the blocking relationship between the middle extension stop block 14 and the first stop part 222, so that the middle rail 21' can move relative to the outer rail 1. The middle rail 21' can move relative to the outer rail 1 in a middle retracted position and a middle extension position. In the retracted position, the middle rail 21' overlaps with the outer rail 1 without protruding from it. The middle rail 21' can move towards the first end 11 to reach the extended position. In the extended position, the middle rail 21' protrudes relative to the outer rail 1, and the second switching member 23 is blocked by the middle push block 15, preventing the middle rail 21' from returning from the extended position to the retracted position. During the movement to the extended position, the first buffer push block 215 abuts against the first push block 415 and compresses the first buffer assembly 41, causing the first piston rod 414 to move towards the first cylinder 413, thus buffering the middle rail 21' during its extension. This completes the process of extending the middle rail 21' and the inner rail 3. (See next...) Figure 17 and Figure 21 After the inner rail 3 moves from the inner extended position to the inner retracted position, the middle outer push unlocking push block 32 pushes the second push part 233 to make the second switching member 23 pivot downward to release the blocking relationship between the middle push block 15 and the second switching member 23. Only then can the middle rail 21' push back relative to the outer rail 1 and move from the middle extended position to the middle retracted position. At this time, because the first elastic member 24 is compressed when the first switching member 22 is pushed counterclockwise by the middle outer unlocking push block 31, the elastic recovery force generated will push the first switching member 22 to pivot clockwise, so that the first stop part 222 pivots downward and locks the middle extended block 14, which can prevent the middle rail 21' from extending relative to the outer rail 1. During the retraction process, the second buffer push block 216 abuts against the second push block 425 and compresses the second buffer assembly 42, causing the second piston rod 424 to move toward the second cylinder 423. The middle rail 21' is thus buffered during the retraction process. This completes the process of retracting the middle rail 21' and the inner rail 3.

[0045] In summary, the slide rail devices 10 and 10' with buffering function of this utility model, by means of the first buffer component 41 and the second buffer component 42 respectively disposed at the first end 11 and the second end 12, during the process of moving from the retracted position to the extended position, the first buffer push block 215 abuts against and compresses the first buffer component 41 to buffer the middle rails 21 and 21', and during the process of moving from the extended position back to the retracted position, the second buffer push block 216 abuts against and compresses the second buffer component 42 to buffer the second slide rail, can prevent the outer rail 1 and the middle rails 21 and 21' from being impacted, and can extend the service life of the outer rail 1 and the middle rails 21 and 21', so it can indeed achieve the purpose of this utility model.

[0046] The above description is merely an embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the claims and description of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A slide rail device with a buffer function, characterized in that: The slide rail device with buffer function includes: The first slide rail includes a first end and a second end opposite to the first end; The second slide rail is movably disposed on the first slide rail and includes a first buffer push block and a second buffer push block; and The buffer unit includes a first buffer component disposed at the first end and a second buffer component disposed at the second end; The second slide rail can move between a retracted position and an extended position. In the retracted position, the second slide rail overlaps with the first slide rail without protruding from the first slide rail. The second slide rail can move relative to the first slide rail toward the first end to extend from the first slide rail and reach the extended position. During the movement from the retracted position to the extended position, the first buffer push block abuts against and compresses the first buffer assembly to buffer the second slide rail. During the movement from the extended position to the retracted position, the second buffer push block abuts against and compresses the second buffer assembly to buffer the second slide rail.

2. The slide rail device with buffer function according to claim 1, characterized in that: The first slide rail forms a first buffer groove. The first buffer assembly includes a first connecting piece disposed in the first buffer groove, a first mounting base disposed in the first connecting piece, a first cylinder disposed in the first mounting base and located in the first buffer groove, a first piston rod movably disposed in the first cylinder, and a first push block connected to the first piston rod. The first push block can abut against the first buffer push block.

3. The slide rail device with buffer function according to claim 2, characterized in that: The first slide rail also forms a second buffer groove. The second buffer assembly includes a second connecting piece disposed in the second buffer groove, a second mounting base disposed in the second connecting piece, a second cylinder disposed in the second mounting base and located in the second buffer groove, a second piston rod movably disposed in the second cylinder, and a second push block connected to the second piston rod. The second push block can abut against the second buffer push block.

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