Slide rail assembly

Abstract

A slide rail assembly includes a first rail, a second rail, a third rail, a blocking member, an auxiliary member and a damping device. The first, second and third rails are displaceable with respect to one another. The third rail is located between the first rail and the second rail. The auxiliary member is arranged at the second rail. The damping device is arranged at the third rail. When the second rail is displaced from an extending position toward a retracting direction, the damping device cannot be activated by the auxiliary member until the blocking member is moved.

Description

Technical Field

[0001] The present invention relates to a slide rail mechanism, in particular to a slide rail assembly with multiple sections of slide rails. Prior Art

[0002] For example, U.S. Patent Publication No. 6,860,575 B2 discloses a safety device for a slide rail comprising an outer rail, a middle rail, an inner rail, and a stopper pivotally mounted on the middle rail. The outer rail is provided with a tab; the middle rail is provided with a protrusion and a slot; an elastic plate is disposed between the stopper and the protrusion of the middle rail; the stopper is provided with a safety protrusion spaced a distance from the end of the middle rail and corresponding to and abutting against the end of the inner rail; and the stopper is also provided with an unlocking protrusion that extends into the slot of the middle rail and abuts against the tab of the outer rail to pivot the stopper. According to this arrangement, when the inner rail is opened and closed, the upper flange of the inner rail abuts against the safety protrusion, causing the inner rail and the middle rail to move in a synchronous retracting direction. This creates a safety distance between the front end of the inner rail and the front end of the middle rail, providing a space to prevent pinching of the user's fingers. This safety distance prevents accidental pinching of the user's fingers. When the inner rail and the middle rail are further retracted for a certain distance, the limit piece will pivot at a certain angle due to the unlocking protrusion being pushed by the protrusion of the outer rail. Accordingly, the safety protrusion will pivot accordingly and smoothly release its abutting relationship with the flange on the inner rail, so that the inner rail can be completely retracted into the middle rail.

[0003] However, as market demands vary, how to develop a different slide product has become a topic worth exploring. Summary of the Invention

[0004] The invention relates to a slide rail assembly with a buffering function when multiple slide rails are folded.

[0005] According to one aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a third rail, a fourth rail, a release member, an auxiliary member, a stop member, and a damping device. The first rail, the second rail, the third rail, and the fourth rail can be longitudinally displaced relative to each other, wherein the third rail is located between the first rail and the second rail, and the fourth rail is located between the third rail and the second rail, wherein the first rail, the second rail, the third rail, and the fourth rail all have a first end and a second end that are positioned opposite to each other; the release member is arranged to the first rail; the auxiliary member is arranged to the second rail; the stop member is movably mounted to the fourth rail; the damping device is arranged to the third rail; wherein, when the slide rail assembly is in an extended state, the first end of the fourth rail exceeds the first end of the third rail, the second rail is in an extended position, and the first end of the second rail exceeds the first end of the fourth rail; wherein, when the second rail is During the process of the extended position moving in a retracting direction to the final stroke, the second rail contacts the stopper in a first state, causing the second rail and the fourth rail to move synchronously in the retracting direction. At this time, a predetermined distance is maintained between the first end of the second rail and the first end of the fourth rail. When the second rail and the fourth rail continue to move synchronously in the retracting direction until the stopper contacts the release member, the stopper is driven to move from the first state to a second state, so as to release the synchronous displacement relationship between the second rail and the fourth rail in the retracting direction, shorten the predetermined distance, and allow the auxiliary member of the second rail to push against the damping device, so that the damping device provides a buffering effect until the second rail reaches a retracted position.

[0006] According to another aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a third rail, an auxiliary member, and a damping device. The first rail, the second rail, and the third rail are longitudinally displaceable relative to each other, wherein the third rail is located between the first rail and the second rail, wherein the first rail, the second rail, and the third rail each have a first end and a second end positioned opposite each other; the auxiliary member is arranged on the second rail; and the damping device is arranged on the third rail. When the second rail moves from an extended position to a retracted direction, the third rail retracts relative to the first rail in the retracted direction, and the auxiliary member of the second rail pushes against the damping device, causing the damping device to provide a cushioning effect.

[0007] In general, the multiple sections of the slide rail assembly provide a buffering function when retracted. Preferably, when the second rail moves in the retracting direction to the retracted position, the damping device is driven by the stopper, allowing the second rail to activate and provide a buffering effect. Simple diagram description

[0008]

[0009] Figure 1 shows a perspective schematic view of a slide rail assembly according to one embodiment of the present invention includes a plurality of sections of the slide rail;

[0010] Figure 2 shows a perspective schematic diagram of another perspective of the slide rail assembly of one embodiment of the present invention comprises a plurality of sections of the slide rail;

[0011] Figure 3 shows a cross-sectional schematic diagram of the slide rail assembly according to one embodiment of the present invention;

[0012] Figure 4 shows an exploded schematic diagram of a slide rail and a damping device of the slide rail assembly according to one embodiment of the present invention;

[0013] Figure 5 shows a schematic diagram of the combination of the slide rail assembly and the damping device according to one embodiment of the present invention;

[0014] Figure 6 shows a schematic diagram of the slide rail assembly in an extended state according to one embodiment of the present invention;

[0015] Figure 7 shows a schematic diagram of the slide rail assembly of one embodiment of the present invention is displaced toward a retracting direction;

[0016] Figure 8 shows a schematic diagram of the slide rail assembly of one embodiment of the present invention continues to move toward the retracting direction;

[0017] FIG9 is a schematic diagram showing the slide rail of the slide rail assembly according to one embodiment of the present invention being further displaced toward the retracting direction; and

[0018] FIG. 10 is a schematic diagram showing the slide rail assembly in a folded state according to an embodiment of the present invention. Implementation Method

[0019] As shown in Figures 1 and 2, a slide rail assembly 20 according to one embodiment of the present invention includes a first rail 22, a second rail 24, a third rail 26, and preferably, a fourth rail 28 and a fifth rail 30. The first rail 22, the second rail 24, the third rail 26, the fourth rail 28, and the fifth rail 30 are longitudinally displaceable relative to each other. Here, the X-axis is the longitudinal direction (or the length of the slide rail), the Y-axis is the transverse direction (or the side direction of the slide rail), and the Z-axis is the vertical direction (or the height direction of the slide rail).

[0020] The third rail 26 is located between the first rail 22 and the second rail 24, the fourth rail 28 is located between the third rail 26 and the second rail 24, and the fifth rail 30 is located between the first rail 22 and the third rail 26. Furthermore, the first rail 22, the second rail 24, the third rail 26, the fourth rail 28, and the fifth rail 30 all have a first end and a second end that are positioned opposite each other, such as a front end and a rear end, but this is not a limitation. Specifically, the first rail 22 has a first end 22a and a second end 22b; the second rail 24 has a first end 24a and a second end 24b; the third rail 26 has a first end 26a and a second end 26b; the fourth rail 28 has a first end 28a and a second end 28b; and the fifth rail 30 has a first end 30a and a second end 30b.

[0021] The slide rail assembly 20 further includes a release member 32 , an auxiliary member 34 , a stopper 36 , and a damping device 38 .

[0022] The release member 32 is arranged (eg, fixed) to the first rail 22. Preferably, the release member 32 is located adjacent to the second end 22b of the first rail 22.

[0023] The auxiliary member 34 is arranged (eg, fixed) to the second rail 24. Preferably, the auxiliary member 34 is located adjacent to the first end 24a of the second rail 24.

[0024] The stopper 36 is movably mounted to the fourth rail 28. Preferably, the stopper 36 is located adjacent to the second end 28b of the fourth rail 28. Furthermore, the stopper 36 is pivotally connected to the fourth rail 28 via a shaft 40, and the slide rail assembly 20 further includes an elastic member 42 for providing elastic force to the stopper 36. The elastic member 42 is, for example, a torsion spring; alternatively, in alternative embodiments, the elastic member 42 may be an elastic object such as a spring or a leaf spring, and the present invention is not limited thereto.

[0025] The damping device 38 is arranged to the third rail 26. The damping device 38 is arranged to have an extension section 43 that can extend out of the first end 26a of the third rail 26 (as shown in FIG. 2).

[0026] Preferably, the third rail 26 is composed of a first rail portion 44 and a second rail portion 46 connected to each other, wherein the first rail portion 44 and the second rail portion 46 are fixed to each other through at least one connecting feature 48, such as riveting or clamping, but the implementation is not limited (as shown in Figure 2).

[0027] As shown in FIG. 3 , the fifth rail 30 is movably mounted between the first rail 22 and the first rail portion 44 of the third rail 26 , and the fourth rail 28 is movably mounted between the second rail portion 46 of the third rail 26 and the second rail 24 .

[0028] Preferably, the first rail portion 44 and the second rail portion 46 of the third rail 26 are disposed in opposite directions relative to each other. The first rail portion 44 includes a first wall 50a, a second wall 50b, and a longitudinal wall 52 connected between the first and second walls 50a, 50b of the first rail portion 44. The first, second, and longitudinal walls 52 of the first rail portion 44 collectively define a predetermined space N. The second rail portion 46 includes a first wall 54a, a second wall 54b, and a longitudinal wall 56 connected between the first and second walls 54a, 54b of the second rail portion 46. The first, second, and longitudinal walls 56 of the second rail portion 46 collectively define a channel K. The longitudinal wall 52 of the first rail portion 44 and the longitudinal wall 56 of the second rail portion 46 are fixedly connected to each other via the aforementioned connection feature 48 (see FIG. 2 for details). In addition, the opening of the predetermined space N of the first rail portion 44 and the opening of the channel K of the second rail portion 46 face opposite directions. For example, the opening of the predetermined space N of the first rail portion 44 faces a first lateral direction T1, while the opening of the channel K of the second rail portion 46 faces a second lateral direction T2 opposite the first lateral direction T1.

[0029] Preferably, the first rail 22 and the second rail portion 46 of the third rail 26 have substantially the same structural configuration; the fifth rail 30 and the fourth rail 28 have substantially the same structural configuration; and the first rail portion 44 of the third rail 26 and the second rail 24 have substantially the same structural configuration.

[0030] Preferably, the first rail 22 defines a channel K' for accommodating the fifth rail 30, and the fifth rail 30 defines a first support channel for accommodating the first rail portion 44 of the third rail 26. The first rail 22, the fifth rail 30, and the first rail portion 44 of the third rail 26 can be considered an outer rail, a middle rail, and an inner rail, respectively, to form a first slide rail assembly. Meanwhile, the channel K of the second rail portion 46 of the third rail 26 accommodates the fourth rail 28, and the fourth rail 28 defines a second support channel for accommodating the second rail 24. The second rail portion 46 of the third rail 26, the fourth rail 28, and the second rail 24 can be considered an outer rail, a middle rail, and an inner rail, respectively, to form a second slide rail assembly. Thus, the slide rail assembly 20 can be considered two slide rail assemblies having three rail sections, connected together.

[0031] Preferably, a plurality of first sliding aid devices 58 (e.g., ball bars) are installed between the first rail 22 and the fifth rail 30, including a plurality of first balls B1 supported between the first rail 22 and the fifth rail 30, and a second sliding aid device 60 (e.g., ball retainer) is installed between the fifth rail 30 and the first rail portion 44 of the third rail 26, including a plurality of second balls B2 supported between the fifth rail 30 and the first rail portion 44 of the third rail 26. This facilitates smooth relative displacement between the first rail 22, the fifth rail 30, and the first rail portion 44 of the third rail 26. Furthermore, a plurality of third sliding-assisting devices 62 (e.g., bead bars) are installed between the second rail portion 46 of the third rail 26 and the fourth rail 28. These devices include a plurality of third balls B3 supported between the second rail portion 46 of the third rail 26 and the fourth rail 28. Furthermore, a fourth sliding-assisting device 64 (e.g., a ball retainer) is installed between the fourth rail 28 and the second rail 24. These devices include a plurality of fourth balls B4 supported between the fourth rail 28 and the second rail 24. This facilitates smooth relative displacement between the second rail portion 46 of the third rail 26, the fourth rail 28, and the second rail 24.

[0032] As shown in Figures 4 and 5 , the damping device 38 is mounted to one of the first rail portion 44 and the second rail portion 46 of the third rail 26. A longitudinal wall 52 of the first rail portion 44 and a portion of a longitudinal wall 56 of the second rail portion 46 collectively define an auxiliary space M connecting two opposing sides of the third rail 26. The auxiliary space M is used to accommodate the damping device 38. The auxiliary space M is formed between a first predetermined wall portion 61 and a second predetermined wall portion 63 of the longitudinal wall 52 and the longitudinal wall 56.

[0033] The damping device 38 includes a cylinder 66 and a rod 68 that are retractable relative to each other. The cylinder 66 has a buffering medium within its housing. The buffering medium may include a fluid (e.g., oil or liquid). Preferably, the cylinder 66 further includes an auxiliary elastic member within its housing to provide elastic force to the rod 68 (e.g., a piston rod) and the cylinder 66. Since this section is within the technical scope that can be understood by those skilled in the art, for the sake of brevity, it will not be further described here.

[0034] Preferably, the damping device 38 has a first predetermined end 72 and a second predetermined end 74 positioned opposite each other. The extension section 43 and an auxiliary section 70 are respectively mounted at locations of the cylinder 66 and the rod 68 that are spaced apart from each other. The extension section 43 is, for example, an extension having a predetermined longitudinal length and includes a mounting portion 71 for mounting (e.g., fastening or snapping) to the exterior of the cylinder 66 housing adjacent to the first predetermined end 72, such that the extension section 43 and the cylinder 66 can be considered integral. The auxiliary section 70 is, for example, a block or a column, but is not limited thereto. The auxiliary section 70 is larger than the rod 68 and is mounted (e.g., fastened) to the rod 68 adjacent to the second predetermined end 74, such that the auxiliary section 70 and the rod 68 can be considered integral. Thus, the extension section 43 and the auxiliary section 70 extend the overall longitudinal length of the damping device 38.

[0035] Preferably, when the damping device 38 is in a buffering standby state, a predetermined wall surface 75 of the mounting portion 71 can abut against the first predetermined wall portion 61, and the extension section 43 extends longitudinally from the side of the mounting portion 71 by a predetermined length, wherein the extension section 43 extends beyond the first end 26a of the third rail 26 by an extension distance J. Meanwhile, the auxiliary section 70 can abut against the second predetermined wall portion 63.

[0036] Preferably, the extension section 43 and the predetermined wall surface 75 are bent perpendicularly relative to each other, so that the extension section 43 and the first predetermined wall portion 61 are offset laterally (laterally) without interfering with each other.

[0037] Preferably, one of the longitudinal wall 52 and the longitudinal wall 56 has a first mounting feature 76 (e.g., a pair of first mounting features 76) located within the auxiliary space M, and the auxiliary section 70 has a second mounting feature 78 (e.g., a pair of second mounting features 78) for connecting to the first mounting feature 76. For example, one of the first mounting feature 76 and the second mounting feature 78 is a longitudinal protrusion, and the other of the first mounting feature 76 and the second mounting feature 78 is a longitudinal groove for mating with the longitudinal protrusion. Thus, a mutual holding and supporting effect is achieved, which helps to stabilize the cylinder 66 and the rod 68 during relative expansion and contraction, but the embodiment is not limited thereto.

[0038] As shown in FIG6 (FIGS. 6 to 10 omit the first sliding aid device 58, the second sliding aid device 60, the third sliding aid device 62, and the fourth sliding aid device 64), the fourth rail 28 is provided with at least one auxiliary feature 80 (e.g., a protrusion); the cylinder body 66 abuts against the first predetermined wall portion 61 through the mounting portion 71 (this portion can be seen in conjunction with FIG5); and the extension section 43 extends beyond the first end 26a of the third rail 26 by a distance (this portion can be seen in conjunction with FIG5).

[0039] When the second rail 24, the fourth rail 28, the third rail 26, and the fifth rail 30 of the slide rail assembly 20 are displaced relative to the first rail 22 in the opening direction D1, causing the slide rail assembly 20 to enter the final stage of its extended state, the auxiliary feature 80 on the fourth rail 28 pushes against the auxiliary section 70 of the damping device 38, causing the rod 68 to contract relative to the cylinder 66 to provide a cushioning effect until the slide rail assembly 20 reaches the extended state (e.g., the fully extended state). At this point, the auxiliary section 70 is away from the second predetermined wall portion 63 and does not abut against the second predetermined wall portion 63.

[0040] Furthermore, when the slide rail assembly 20 is in the extended state, the first end 28a of the fourth rail 28 extends beyond the first end 26a of the third rail 26. The second rail 24 is in an extended position E, and the first end 24a of the second rail 24 extends beyond the first end 28a of the fourth rail 28. Preferably, the first end 30a of the fifth rail 30 extends beyond the first end 22a of the first rail 22, and the first end 26a of the third rail 26 extends beyond the first end 30a of the fifth rail 30.

[0041] Preferably, the stopper 36 is in a first state S1 in response to the elastic force of the elastic member 42. Here, the elastic member 42 has two elastic portions connected to a first support feature 82 of the fourth rail 28 and a second support feature 84 of the stopper 36.

[0042] Preferably, the fourth rail 28 can support the blocking member 36 in the first state S1.

[0043] Preferably, when the slide rail assembly 20 is in the extended state, the stopper 36 and the release member 32 have a predetermined longitudinal distance therebetween.

[0044] Preferably, the release member 32 includes a guide portion 86. The guide portion 86 is, for example, an inclined surface or an arc surface, but the implementation is not limited thereto (please refer to FIG. 1 for details).

[0045] Preferably, the release member 32 further includes a first gap G1 and a second gap G2, and the guide portion 86 is located between the first gap G1 and the second gap G2 (this portion can be seen in FIG. 1 ).

[0046] As shown in FIG. 7 , when the second rail 24 moves from the extended position E in the retracting direction D2 to a predetermined stroke, such as the final stroke, a portion of the second rail 24 (e.g., the second end 24 b) contacts the stopper 36 in the first state S1, causing the second rail 24 and the fourth rail 28 to move synchronously in the retracting direction D2, and the second rail 24 cannot be retracted relative to the fourth rail 28. At this time, a predetermined distance Q is maintained between the first end 24 a of the second rail 24 and the first end 28 a of the fourth rail 28.

[0047] Preferably, when the second rail 24 and the fourth rail 28 are synchronously displaced in the retracting direction D2, the auxiliary feature 80 on the fourth rail 28 no longer pushes against the auxiliary section 70 of the damping device 38, allowing the rod 68 to extend relative to the cylinder 66 through the above-mentioned buffering medium and / or auxiliary elastic member inside the cylinder 66. At this time, the damping device 38 is in the buffering ready state, and the auxiliary section 70 abuts against the second predetermined wall portion 63.

[0048] As shown in Figures 8 to 10, when the second rail 24 and the fourth rail 28 continue to move synchronously in the folding direction D2 until the stopper 36 contacts the guide portion 86 of the release member 32, the stopper 36 is driven by the guide portion 86 of the release member 32 to move (for example, pivot) from the first state S1 (as shown in Figure 8) in a predetermined direction r to a second state S2 (as shown in Figure 9), thereby releasing the synchronous displacement relationship between the second rail 24 and the fourth rail 28 in the folding direction D2, so that the second rail 24 can be folded relative to the fourth rail 28 to shorten the predetermined distance Q. At this time, the first rail 24 and the fourth rail 28 are folded in the folding direction D2. The third rail 26, the fourth rail 28, and the fifth rail 30 are retracted relative to the first rail 22 in the retracted direction D2 (e.g., the third rail 26, the fourth rail 28, and the fifth rail 30 are already in the retracted position relative to the first rail 22), allowing the auxiliary member 34 on the second rail 24 to push against the extension 43 of the damping device 38 in the retracted direction D2 (as shown in FIG. 9 ), causing the cylinder 66 to contract relative to the rod 68, allowing the damping device 38 to provide a cushioning effect until the second rail 24 reaches a retracted position R, bringing the slide rail assembly 20 into a fully retracted state (as shown in FIG. 10 ). FIG. 10 omits the stopper 36 in the second state S2.

[0049] Preferably, the second rail 24 includes a first wall 88a, a second wall 88b, and a longitudinal wall 90 connected between the first wall 88a and the second wall 88b of the second rail 24. When the second rail 24 is in the retracted position R, the first wall 88a and the second wall 88b of the second rail 24 respectively penetrate the first gap G1 and the second gap G2 of the release member 32.

[0050] It is worth mentioning that, as described above, when the second rail 24, the fourth rail 28, the third rail 26, and the fifth rail 30 are displaced relative to the first rail 22 from the retracted position toward the open direction D1, causing the slide rail assembly 20 to enter the final stroke of the extended state, the auxiliary feature 80 on the fourth rail 28 pushes against the auxiliary section 70 of the damping device 38, causing the rod 68 to contract relative to the cylinder 66 to provide a cushioning effect until the slide rail assembly 20 is in the extended state.

[0051] It can be seen that the slide rail assembly 20 provided in the embodiment of the present invention includes the following features:

[0052] 1. The slide rail assembly 20 includes three or more slide rails. When the second rail 24, the fourth rail 28, the third rail 26, and the fifth rail 30 move from an extended position relative to the first rail 22 in the retracted direction D2 to a predetermined stroke (e.g., a final stroke), at least three functions can be achieved by the second rail 24 contacting the stopper 36 in the first state S1. For example, the stopper 36 in the first state S1 can provide the second rail 24 and the fourth rail 28 with synchronous displacement in the folding direction D2 (i.e., moving together); or, the stopper 36 in the first state S1 can provide a blocking effect, so that the second rail 24 cannot be completely folded relative to the fourth rail 28 (e.g., the second rail 24 cannot be completely retracted or retracted into the fourth rail 28). At this time, the first end 24a of the second rail 24 and the first end 28a of the fourth rail 28 maintain the predetermined distance Q as a safety distance, which prevents the user's fingers from being pinched between the first end 24a of the second rail 24 and the first end 28a of the fourth rail 28; or, the stopper 36 in the first state S1 can provide a blocking effect, so that the second rail 24 cannot be completely folded relative to the fourth rail 28 (e.g., the second rail 24 cannot be completely retracted or retracted into the fourth rail 28). The stopper 36 can provide a blocking effect, preventing the second rail 24 from retracting relative to the fourth rail 28, so that the second rail 24 cannot activate the damping device 38. Once the stopper 36 is driven by the guide portion 86 of the release member 32 and moves from the first state S1 to the second state S2, the synchronous displacement relationship between the second rail 24 and the fourth rail 28 in the retracting direction D2 is released, allowing the second rail 24 to retract relative to the fourth rail 28 to shorten the predetermined distance Q. At this time, the third rail 26 is retracted relative to the first rail 22, allowing the auxiliary member 34 on the second rail 24 to push against the damping device 38, so that the damping device 38 provides a cushioning effect until the second rail 24 reaches the retracted position R.

[0053] 2. The stopper 36 in the first state S1 provides a blocking effect, preventing the second rail 24 from retracting relative to the fourth rail 28, and thus preventing the second rail 24 from activating the damping device 38. The stopper 36 is not moved from the first state S1 to the second state S2 by the guide portion 86 of the release member 32. This allows the auxiliary member 34 on the second rail 24 to push against the damping device 38, causing the damping device 38 to provide a cushioning effect until the second rail 24 reaches the retracted position R. This ensures that the damping device 38 provides a cushioning effect only when the second rail 24, the fourth rail 28, the third rail 26, and the fifth rail 30 are retracted relative to the first rail 22 in the retracting direction D2. In other words, the damping device 38 will not be prematurely activated before the second rail 24, the fourth rail 28, the third rail 26, and the fifth rail 30 are completely retracted relative to the first rail 22.

[0054] 3. The third rail 26 is composed of a first rail portion 44 and a second rail portion 46 that are connected (fixed to each other). The fifth rail 30 is movably mounted between the first rail 22 and the first rail portion 44 of the third rail 26, and the fourth rail 28 is movably mounted between the second rail portion 46 of the third rail 26 and the second rail 24.

[0055] 4. When the second rail 24, the fourth rail 28, the third rail 26, and the fifth rail 30 are displaced relative to the first rail 22 from the folded position toward the opening direction D1, or from the extended position toward the folded direction D2, the damping device 38 can be activated to provide a buffering effect.

[0056] Although the present invention has been disclosed in the aforementioned preferred embodiments, they are not intended to limit the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of the attached patent application.

[0057] 20: Slide rail assembly

[0058] 22: First Track

[0059] 22a, 24a, 26a, 28a, 30a: first end

[0060] 22b, 24b, 26b, 28b, 30b: Second end

[0061] 24: Second Track

[0062] 26: The Third Rail

[0063] 28: Track 4

[0064] 30: Fifth Track

[0065] 32: Release piece

[0066] 34: Auxiliary parts

[0067] 36: Stopper

[0068] 38: Damping device

[0069] 40: Axis

[0070] 42: Elastic parts

[0071] 43: Extension

[0072] 44: First track

[0073] 46: Second track

[0074] 48: Connection features

[0075] 50a, 54a, 88a: First wall

[0076] 50b, 54b, 88b: Second wall

[0077] 52,56,90: vertical wall

[0078] 58: First sliding aid device

[0079] 60: Second sliding aid

[0080] 61: First predetermined wall portion

[0081] 62: The third sliding aid device

[0082] 63: Second predetermined wall portion

[0083] 64: Fourth sliding aid

[0084] 66: Cylinder

[0085] 68: Rod

[0086] 70: Auxiliary segment

[0087] 71: Installation Department

[0088] 72: First predetermined end

[0089] 74: Second predetermined terminal

[0090] 75: Reserved wall

[0091] 76: First installation feature

[0092] 78: Second installation feature

[0093] 80: Auxiliary features

[0094] 82: First support feature

[0095] 84: Second support feature

[0096] 86:Guide

[0097] B1: First ball

[0098] B2: Second ball

[0099] B3: The third ball

[0100] B4: The fourth ball

[0101] D1: Opening direction

[0102] D2: Folding direction

[0103] E: Extended position

[0104] G1: First gap

[0105] G2: Second gap

[0106] J: Extension distance

[0107] K,K': channel

[0108] M: Auxiliary space

[0109] N: Reserved space

[0110] Q: Predetermined distance

[0111] r: Predetermined direction

[0112] R: folded position

[0113] S1: First state

[0114] S2: Second state

[0115] T1: First lateral

[0116] T2: Second lateral

Claims

1. A slide rail assembly, comprising: a first rail, a second rail, a third rail and a fourth rail which are longitudinally displaceable relative to each other, wherein: The third rail is located between the first rail and the second rail, and the fourth rail is located between the third rail and the second rail, wherein the first rail, the second rail, the third rail and the fourth rail all have a first end and a second end that are located opposite to each other; a release member is arranged on the first rail; an auxiliary member is arranged on the second rail; a stopper is movably mounted on the fourth rail; and a damping device is arranged on the third rail; wherein when the slide rail assembly is in an extended state, the first end of the fourth rail exceeds the first end of the third rail, and the second rail is in an extended position and the first end of the second rail exceeds the first end of the fourth rail; wherein, when the second rail moves from the extended position to a retracted direction to a final stroke, the second rail contacts the stopper in a first state, so that the second rail and the fourth rail move synchronously in the retracted direction, and at this time, a predetermined distance is maintained between the first end of the second rail and the first end of the fourth rail; When the second rail and the fourth rail continue to move synchronously in the folding direction until the stopper contacts the release member, the stopper is driven to move from the first state to a second state, so as to release the synchronous displacement relationship between the second rail and the fourth rail in the folding direction, shorten the predetermined distance, and allow the auxiliary member of the second rail to push against the damping device, so that the damping device provides a buffering effect until the second rail reaches a folded position.

2. The slide rail assembly as described in claim 1 further includes a fifth rail located between the first rail and the third rail, the fifth rail having a first end and a second end positioned opposite to each other; when the slide rail assembly is in the extended state, the first end of the fifth rail exceeds the first end of the first rail, and the first end of the third rail exceeds the first end of the fifth rail.

3. The slide rail assembly as described in claim 2, wherein: The third rail has a first rail portion and a second rail portion; the fifth rail is movably installed between the first rail and the first rail portion of the third rail, and the fourth rail is movably installed between the second rail portion of the third rail and the second rail.

4. The slide rail assembly as claimed in claim 3, wherein: The first rail portion and the second rail portion of the third rail are arranged opposite to each other, and both the first rail portion and the second rail portion include a first wall, a second wall and a longitudinal wall connected between the first wall and the second wall; the longitudinal wall of the first rail portion is connected to the longitudinal wall of the second rail portion.

5. The slide rail assembly as claimed in claim 1, wherein: The release member is located adjacent to the second end of the first rail.

6. The slide rail assembly as claimed in claim 1, wherein: The auxiliary member is located adjacent to the first end of the second rail.

7. The slide rail assembly as claimed in claim 1, wherein: The stopper is pivotally connected to the fourth rail, and the slide rail assembly further comprises an elastic member for providing elastic force to the stopper.

8. The slide rail assembly as claimed in claim 1, wherein: The stopper is located adjacent to the second end of the fourth rail.

9. The slide rail assembly as claimed in claim 3, wherein: The damping device is arranged to have an extension section extending out of the first end of the third rail, and the extension section is used for the auxiliary part of the second rail to push against the damping device, so that the damping device provides a buffering effect until the second rail reaches the folded position.

10. The slide rail assembly as described in claim 1, wherein; during the process of the second rail, the fourth rail and the third rail moving in an opening direction relative to the first rail to the final stroke, the fourth rail pushes against the damping device through at least one auxiliary feature, so that the damping device provides a buffering effect until the slide rail assembly is in the extended state.

11. A slide rail assembly, comprising: a first rail, a second rail, and a third rail that are longitudinally displaceable relative to each other, wherein: The third rail is located between the first rail and the second rail; an auxiliary part is arranged on the second rail; and a damping device is arranged on the third rail; wherein, when the second rail moves from an extended position to a folded direction, the third rail folds in the folded direction relative to the first rail, and the auxiliary part of the second rail pushes against the damping device, so that the damping device provides a buffering effect.

12. The slide rail assembly as described in claim 11 further includes a fourth rail and a fifth rail; the third rail has a first rail portion and a second rail portion connected to each other; the fifth rail is movably mounted between the first rail and the first rail portion of the third rail, and the fourth rail is movably mounted between the second rail portion of the third rail and the second rail.

13. The slide rail assembly as claimed in claim 12, wherein: The first rail portion and the second rail portion of the third rail both include a first wall, a second wall and a longitudinal wall connected between the first wall and the second wall; the longitudinal wall of the first rail portion and the longitudinal wall of the second rail portion are fixedly connected to each other.

14. The slide rail assembly as claimed in claim 12, further comprising a stopper movably mounted to the fourth rail, and the first rail, the second rail, the third rail, the fourth rail and the fifth rail all have a first end and a second end that are positioned opposite to each other; wherein, When the slide rail assembly is in an extended state, the first end of the fourth rail exceeds the first end of the third rail, the second rail is in the extended position, and the first end of the second rail exceeds the first end of the fourth rail; wherein, when the second rail moves from the extended position toward the folding direction, the second rail contacts the stopper in a first state, so that the second rail and the fourth rail move synchronously toward the folding direction, and a predetermined distance is maintained between the first end of the second rail and the first end of the fourth rail.

15. The slide rail assembly as described in claim 14 further includes a release member arranged on the first rail; when the second rail and the fourth rail continue to move synchronously in the folding direction until the stopper contacts the release member, the stopper is driven to move from the first state to a second state, so as to release the synchronous displacement relationship between the second rail and the fourth rail in the folding direction, so as to allow the auxiliary member of the second rail to push against the damping device, so that the damping device provides a buffering effect until the second rail reaches a folded position.

16. The slide rail assembly as claimed in claim 15, wherein: The release member is located adjacent to the second end of the first rail.

17. The slide rail assembly as claimed in claim 12, wherein: The auxiliary member is located adjacent to the first end of the second rail.

18. The slide rail assembly as claimed in claim 14, wherein: The stopper is pivotally connected to the fourth rail, and the slide rail assembly further comprises an elastic member for providing elastic force to the stopper.

19. The slide rail assembly as claimed in claim 15, wherein: The damping device is arranged to have an extension section extending out of the first end of the third rail, and the extension section is used for the auxiliary part of the second rail to push against the damping device, so that the damping device provides a buffering effect until the second rail reaches the folded position.

20. The slide rail assembly as claimed in claim 12, wherein: The first rail portion and the second rail portion of the third rail are arranged in opposite directions relative to each other.

Images