Slide rail device with special actuation sequence

Abstract

A slide rail device with a special actuation sequence comprises an outer rail, a middle rail unit and an inner rail. The outer rail comprises a first end, a second end opposite to the first end, a movable face and a middle extending check block arranged on the movable face. The middle rail unit comprises a middle rail movably arranged on the outer rail and a first switching piece pivoted to the middle rail, and the first switching piece can be stopped by the middle extending stop block. The inner rail is movably arranged on the middle rail. The inner rail comprises a middle outer unlocking push block. The inner rail can move relative to the middle rail at an inner folding position and an inner extending position, and the inner rail can move towards the first end to reach the inner extending position. And when the middle and outer unlocking push block is at the inner extension position, the middle and outer unlocking push block pushes the first switching piece to pivot upwards so as to release the blocking relation between the middle extension stop block and the first switching piece.

Description

Technical Field

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

[0002] The existing slide rail device includes an outer rail, a middle rail, and an inner rail. During extension, the inner rail and the middle rail extend synchronously relative to the outer rail, and then the inner rail extends relative to the middle rail to reach a fully extended state. However, this pulling action ends with the inner rail being pulled out relative to the middle rail, so the middle rail has to bear the impact force of the inner rail being pulled out, making the middle rail and the inner rail more prone to damage, and there is still room for improvement. Utility Model Content

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

[0004] The sliding rail device with a special operating sequence of this utility model includes: an outer rail, including a first end, a second end opposite to the first end, a movable surface, and a middle extension block disposed on the movable surface; a middle rail unit, including a middle rail movably disposed on the outer rail and a first switching member pivotally disposed on the middle rail, the first switching member being able to be stopped by the middle extension block; and an inner rail, movably disposed on the middle rail, the inner rail forming a middle-outer unlocking push block, the inner rail being able to move relative to the middle rail in an inwardly retracted position and an inwardly extended position. In the inwardly retracted position, the inner rail overlaps with the middle rail without protruding from the middle rail, and the inner rail is able to move toward the first end to reach the inwardly extended position. In the inwardly extended position, the middle-outer unlocking push block pushes the first switching member to pivot upward to release the blocking relationship between the middle extension block and the first switching member.

[0005] In some embodiments, the central rail has a first movable groove, and the first switching member has a first flat plate portion pivotally mounted on the central rail, a first stop portion extending from the lower side of the first flat plate portion and passing through the first movable groove, and a first push portion extending from the upper side of the first flat plate portion away from the central rail. In the inward extension position, the middle and outer unlocking push block pushes the first push portion to cause the first switching member to pivot upward to release the blocking relationship between the middle extension block and the first stop portion.

[0006] In some embodiments, the center rail also has a first mounting groove, and the center rail unit further includes a first elastic member disposed in the first mounting groove and abutting against the first flat plate portion.

[0007] In some embodiments, the outer rail also has a center push block disposed on the movable surface, the inner rail also includes a center-outer push unlocking block disposed on the inner rail, and the center rail unit also includes a second switching member pivotally disposed on the center rail. The center rail can move relative to the outer rail in a center-closed position and a center-extended position. In the center-closed position, the center rail overlaps with the outer rail without protruding from the outer rail. The center rail can move toward the first end to reach the center-extended position. In the center-extended position, the center rail protrudes relative to the outer rail. The second switching member is blocked by the center push block to prevent the center rail from returning from the center-extended position to the center-closed position.

[0008] In some implementations, the inner rail also forms a middle and outer push-unlocking push block. When in the retracted position, the middle and outer push-unlocking push block pushes the second switching member to pivot downward to release the blocking relationship between the middle push block and the second switching member.

[0009] In some embodiments, the central rail also has a second movable groove, and the second switching member has a second flat plate portion pivotally mounted on the central rail, a second stop portion extending from the lower side of the second flat plate portion and passing through the second movable groove, and a second push portion extending from the upper side of the second flat plate portion away from the central rail. In the retracted position, the middle and outer push unlocking block pushes the second push portion to cause the second switching member to pivot downward to release the blocking relationship between the middle push block and the second switching member.

[0010] In some embodiments, the center rail also has a second mounting groove, and the center rail unit further includes a second elastic member disposed in the second mounting groove and abutting against the second flat plate portion.

[0011] In some embodiments, the middle rail unit also has an inner stop member disposed near the first end of the middle rail, and the inner rail also has an inner stop block capable of engaging with the inner stop member.

[0012] This utility model has at least the following effects: the first switching member can be stopped by the middle extension block, and the inner rail can move relative to the middle rail in an inwardly closed position and an inwardly extended position. In the inwardly closed position, the inner rail overlaps with the middle rail without protruding from the middle rail. The inner rail can move towards the first end to reach the inwardly extended position. In the inwardly extended position, the middle outer unlocking push block pushes the first switching member to pivot upward to release the blocking relationship between the middle extension block and the first switching member. That is, after the inner rail extends relative to the middle rail, the middle rail can move relative to the outer rail and extend. This makes the extension action of the entire slide rail device end when the middle rail extends relative to the outer rail. The impact force of the action is mainly borne by the outer rail, which can extend the service life of the middle rail and the inner rail. Attached Figure Description

[0013] Other features and effects of this utility model will be clearly presented in the embodiments with reference to the accompanying drawings, wherein:

[0014] Figure 1 This is a perspective view of a first embodiment of the slide rail device of this utility model;

[0015] Figure 2 This is an exploded perspective view of the first embodiment;

[0016] Figure 3 This is an incomplete exploded perspective view of an outer rail and a buffer unit of the first embodiment;

[0017] Figure 4 This is an incomplete exploded perspective view of a middle track unit in the first embodiment;

[0018] Figure 5 This is an incomplete perspective view of an inner rail of the first embodiment;

[0019] 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;

[0020] 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;

[0021] 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;

[0022] 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.

[0023] 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.

[0024] Figure 11 This is a perspective view of a second embodiment of the slide rail device of this utility model;

[0025] Figure 12 This is an exploded perspective view of the second embodiment;

[0026] Figure 13 This is an incomplete exploded perspective view of an outer rail and a buffer unit of the second embodiment;

[0027] Figure 14 This is an incomplete exploded perspective view of a middle track unit in the second embodiment;

[0028] Figure 15 This is an incomplete exploded perspective view of the middle track unit of the second embodiment from another viewpoint;

[0029] Figure 16 This is an incomplete perspective view of an inner rail of the second embodiment;

[0030] 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;

[0031] 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;

[0032] 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;

[0033] 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.

[0034] 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

[0035] 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 description of the textual part of the specification 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] See Figure 1 and Figure 2 The first embodiment of the slide rail device 10 with a special operating sequence 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] See Figures 11 to 13 The second embodiment of the slide rail device 10' with a special operating sequence 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] In summary, the slide rail devices 10 and 10' with a special operating sequence of this utility model can be stopped by the middle extension block 14 by the first switching member 22, and the inner rail 3 can move relative to the middle rails 21 and 21' in an inwardly retracted position and an inwardly extended position. In the inwardly retracted position, the inner rail 3 overlaps with the middle rails 21 and 21' without protruding from the middle rails 21 and 21'. 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 switching member 22. The upward pivoting releases the blocking relationship between the middle extension block 14 and the first switching member 22. This means that after the inner rail 3 extends relative to the middle rails 21 and 21', the middle rails 21 and 21' can move and extend relative to the outer rail 1. This ensures that the extension of the overall slide rail device 10 and 10' ends when the middle rails 21 and 21' extend relative to the outer rail 1. The impact force of the movement is mainly borne by the outer rail 1, which can extend the service life of the middle rails 21 and 21' and the inner rail 3. Therefore, it can indeed achieve the purpose of this utility model.

[0051] 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 special actuating sequence, characterized by: The special operation sequence slide rail device comprises: an outer rail including a first end, a second end opposite to the first end, an active surface, and a middle extension stopper arranged on the active surface; a middle rail unit including a middle rail movably arranged on the outer rail, and a first switching member pivotally arranged on the middle rail, the first switching member being able to be stopped by the middle extension stopper; and an inner rail movably arranged on the middle rail, the inner rail forming a middle-outer unlocking push block, the inner rail being able to move relative to the middle rail between an inner retracted position and an inner extended position, in the inner retracted position, the inner rail is combined with the middle rail without protruding out of the middle rail, the inner rail is able to move towards the first end to reach the inner extended position, in the inner extended position, the middle-outer unlocking push block pushes the first switching member to pivot upwards to release the stoppage relationship between the middle extension stopper and the first switching member.

2. The slide rail device with the special actuating sequence according to claim 1, characterized in that: The middle rail has a first active slot, the first switching member has a first flat plate portion pivotally arranged on the middle rail, a first stop portion bent and extended from the lower side of the first flat plate portion and passing through the first active slot, and a first push-against portion bent and extended from the upper side of the first flat plate portion away from the middle rail, in the inner extended position, the middle-outer unlocking push block pushes the first push-against portion to make the first switching member pivot upwards to release the stoppage relationship between the middle extension stopper and the first stop portion.

3. The slide rail device with the special actuating sequence according to claim 2, characterized in that: The middle rail further has a first mounting slot, and the middle rail unit further includes a first elastic member arranged in the first mounting slot and abutting against the first flat plate portion.

4. The slide device of claim 1, wherein: The outer rail further has a middle push-back stopper arranged on the active surface, the inner rail further includes a middle-outer push-back unlocking push block, the middle rail unit further includes a second switching member pivotally arranged on the middle rail, the middle rail being able to move relative to the outer rail between a middle retracted position and a middle extended position, in the middle retracted position, the middle rail is combined with the outer rail without protruding out of the outer rail, the middle rail is able to move towards the first end to reach the middle extended position, in the middle extended position, the middle rail protrudes relative to the outer rail, the second switching member is stopped by the middle push-back stopper to prevent the middle rail from returning from the middle extended position to the middle retracted position.

5. The slide rail device with the special actuating sequence according to claim 4, characterized in that: The inner rail further forms a middle-outer push-back unlocking push block, in the inner retracted position, the middle-outer push-back unlocking push block pushes the second switching member to pivot downwards to release the stoppage relationship between the middle push-back stopper and the second switching member.

6. The slide rail device with the special actuating sequence according to claim 5, characterized in that: The middle rail further has a second active slot, the second switching member has a second flat plate portion pivotally arranged on the middle rail, a second stop portion bent and extended from the lower side of the second flat plate portion and passing through the second active slot, and a second push-against portion bent and extended from the upper side of the second flat plate portion away from the middle rail, in the inner retracted position, the middle-outer push-back unlocking push block pushes the second push-against portion to make the second switching member pivot downwards to release the stoppage relationship between the middle push-back stopper and the second switching member.

7. The slide rail device with the special actuating sequence according to claim 6, characterized in that: The middle rail further has a second mounting slot, and the middle rail unit further includes a second elastic member arranged in the second mounting slot and abutting against the second flat plate portion.

8. The slide arrangement of claim 1, wherein: The middle rail unit further has a middle-outer stopper arranged on the middle rail adjacent to the first end, and the inner rail further has an inner middle stopper capable of being clamped against the middle-outer stopper.

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