Slide rail assembly

Abstract

The present invention relates to a slide rail assembly, which comprises a first rail, a second rail, a third rail and a limiting member. The third rail is movably mounted between the first rail and the second rail. The second rail and the third rail are capable of moving relative to the first rail from a predetermined position along a first direction. The limiting member has a first portion and a second portion. When the second rail and the third rail are at the predetermined position relative to the first rail, the first portion of the limiting member is arranged at the end of the first rail, the second rail and the third rail, and the second portion of the limiting member is used to prevent the first rail, the second rail and the third rail from moving away from each other along a second direction. The first direction and the second direction are substantially perpendicular to each other.

Description

[0001] This application is a divisional application of Chinese application No. 202010766547.8, filed on August 3, 2020, entitled "Slide Rail Assembly". Technical Field

[0002] This invention relates to a slide rail, and more particularly to a reliable slide rail assembly. Background Technology

[0003] Figure 1 This illustrates a known slide rail assembly 10. The slide rail assembly 10 includes multiple slide rails. A second rail 14 is movably mounted within a channel 16 of a first rail 12, and a sliding aid 18 has multiple balls to assist the longitudinal displacement of the second rail 14 relative to the first rail 12. Furthermore, the slide rail assembly 10 must meet certain standard safety specifications and quality control requirements to satisfy basic market demands. For example, the slide rail assembly 10 typically undergoes a vibration test to verify the durability of the slide rails and their ability to support a specific weight (e.g., a server or drawer). When the slide rail assembly 10 undergoes this vibration test... Figure 1 (Illustratively, a force F is applied to the slide rail assembly 10.) If the slide rails separate or bend after the slide rail assembly 10 receives the force F, it indicates that there are doubts about the safety and quality of the slide rail assembly 10. Figure 1 This indicates that after the slide rail assembly 10 receives the force F, part of the second rail 14 is laterally (or sideways) detached or bent relative to the first rail 12. This will cause the second rail 14 to fail to be properly installed in the channel 16 of the first rail 12, and will prevent the second rail 14 from moving smoothly relative to the first rail 12.

[0004] Therefore, how to develop a reliable slide rail assembly has become a topic worth exploring. Summary of the Invention

[0005] The purpose of this invention is to provide a reliable slide rail assembly that achieves tight stability when the slide rail assembly is in the retracted position.

[0006] According to one aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a third rail, and a limiting member. The first rail includes a first wall, a second wall, and a longitudinal wall connected between the first wall and the second wall of the first rail; the second rail includes a first wall, a second wall, and a longitudinal wall connected between the first wall and the second wall of the second rail; the third rail is movably installed between the first rail and the second rail, and the second rail and the third rail are displaceable relative to the first rail from a retracted position along a first direction; the limiting member has a first portion and a second portion; wherein, when the second rail and the third rail are in the retracted position relative to the first rail, the first portion of the limiting member is disposed at the front end of adjacent first rails, second rails, and third rails, and the second portion of the limiting member is used to prevent the first rail, second rail, and third rail from disengaging from each other in a second direction, the first direction and the second direction being substantially perpendicular to each other.

[0007] Preferably, the first rail is provided with a bracket, which is fixedly connected to the first rail. The bracket has a limiting feature, which includes an upper part, a lower part and a middle part. The upper part, the lower part and the middle part together define a limiting space for the second part of the limiting member to extend into and form a limiting relationship with the upper part, the lower part and the middle part of the limiting feature.

[0008] Preferably, the bracket has an upper support portion, a lower support portion and an intermediate support portion connected between the upper support portion and the lower support portion, wherein the upper support portion is located on a first wall adjacent to the first rail, the lower support portion is located on a second wall adjacent to the first rail, and the intermediate support portion is located on a longitudinal wall adjacent to the first rail.

[0009] Preferably, the limiting feature is a notch type.

[0010] Preferably, the middle portion of the limiting feature is located at the front end adjacent to the first rail, while the upper and lower portions of the limiting feature are located at the front end beyond the first rail.

[0011] Preferably, the limiting member is fixedly disposed on the second rail.

[0012] Preferably, the limiting element is integrated with the second rail.

[0013] Preferably, the second part of the limiting member extends substantially perpendicularly from the first part.

[0014] Preferably, when the second rail and the third rail are displaced from the retracted position to an extended position relative to the first rail, the limiting member moves away from the front ends of the first rail and the third rail.

[0015] Preferably, the slide rail assembly further includes at least one sliding aid device, and the first rail, the second rail and the third rail are supported relative to each other by the at least one sliding aid device.

[0016] According to another aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a third rail, and a limiting member. The third rail is movably mounted between the first rail and the second rail, and the first rail, the second rail, and the third rail are longitudinally displaceable relative to each other; the limiting member is disposed on the second rail; wherein, when the second rail and the third rail are in a predetermined position relative to the first rail, the limiting member can engage the first rail to prevent the first rail, the second rail, and the third rail from disengaging laterally relative to each other.

[0017] Preferably, the first rail includes a first wall, a second wall, and a longitudinal wall connected between the first wall and the second wall of the first rail, and the first wall, the second wall, and the longitudinal wall of the first rail together define a passage; the third rail is movably installed in the passage of the first rail, and the third rail includes a first wall, a second wall, and a longitudinal wall connected between the first wall and the second wall of the third rail, and the first wall, the second wall, and the longitudinal wall of the third rail together define a passage; the second rail is movably installed in the passage of the third rail.

[0018] Preferably, the predetermined position is a closed position.

[0019] Preferably, the second rail has a first end and a second end that are away from the first end of the second rail, and the limiting member is located at the first end adjacent to the second rail.

[0020] Preferably, the limiting member includes a first part and a second part; the first rail is provided with a bracket, the bracket has a limiting feature, the limiting feature includes an upper part, a lower part and a middle part, the upper part, the lower part and the middle part together define a limiting space; when the second rail and the third rail are in the predetermined position relative to the first rail, the second part of the limiting member extends into the limiting space and forms a limiting relationship with the upper part, the lower part and the middle part of the limiting feature.

[0021] Preferably, the bracket has an upper support portion, a lower support portion and an intermediate support portion connected between the upper support portion and the lower support portion, wherein the upper support portion is located on a first wall adjacent to the first rail, the lower support portion is located on a second wall adjacent to the first rail, and the intermediate support portion is located on a longitudinal wall adjacent to the first rail.

[0022] Preferably, the second part of the limiting member extends substantially perpendicularly from the first part.

[0023] Preferably, the slide rail assembly further includes a first support seat disposed on a first wall adjacent to the third rail, and a second support seat disposed on a second wall adjacent to the third rail; the first support seat has a first groove, and the second support seat has a second groove; the second rail includes a first wall, a second wall, and a longitudinal wall connected between the first wall and the second wall of the second rail; the first wall of the second rail has a first support leg extending into the first groove, and the second wall of the second rail has a second support leg extending into the second groove to prevent the second rail from moving laterally.

[0024] According to another aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a third rail, and a limiting member. The first rail includes a first wall, a second wall, and a longitudinal wall connected between the first wall and the second wall of the first rail; the second rail includes a first wall, a second wall, and a longitudinal wall connected between the first wall and the second wall of the second rail; the third rail is movably installed between the first rail and the second rail, and the third rail includes a first wall, a second wall, and a longitudinal wall connected between the first wall and the second wall of the third rail; the limiting member is disposed on the second rail; wherein two of the slide rails of the first rail, the second rail, and the third rail are supported relative to each other by at least one sliding aid device; wherein when the second rail and the third rail are in a predetermined position relative to the first rail, one end of the at least one sliding aid device has a predetermined distance from a first end of the first rail, and a portion of the limiting member is adjacent to one side of the longitudinal wall of the first rail. Attached Figure Description

[0025] To further illustrate and demonstrate the above-mentioned objectives, structural features, and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0026] Figure 1 This diagram shows a slide rail assembly based on known technology.

[0027] Figure 2 This diagram shows a slide rail assembly according to a first embodiment of the present invention, comprising a first rail, a second rail, and a third rail.

[0028] Figure 3 This diagram shows an exploded view of the slide rail assembly according to the first embodiment of the present invention.

[0029] Figure 4 This shows a partial schematic diagram of the second rail of the slide rail assembly according to the first embodiment of the present invention.

[0030] Figure 5 This shows a cross-sectional schematic diagram of the second rail of the slide rail assembly according to the first embodiment of the present invention.

[0031] Figure 6This diagram shows the slide rail assembly of the first embodiment of the present invention in a retracted state.

[0032] Figure 7 A schematic diagram showing the slide rail assembly of the first embodiment of the present invention in an extended state.

[0033] Figure 8 A partial perspective view showing the slide rail assembly of the first embodiment of the present invention in the retracted state.

[0034] Figure 9 A partial perspective view showing the slide rail assembly of the first embodiment of the present invention in the retracted state.

[0035] Figure 10 This diagram shows a slide rail assembly according to a second embodiment of the present invention, comprising a first rail, a second rail, and a third rail.

[0036] Figure 11 This shows an exploded view of the slide rail assembly according to a second embodiment of the present invention.

[0037] Figure 12 This shows a partial schematic diagram of the second rail of the slide rail assembly according to a second embodiment of the present invention.

[0038] Figure 13 This shows a cross-sectional schematic diagram of the second rail of the slide rail assembly according to a second embodiment of the present invention.

[0039] Figure 14 This diagram shows the slide rail assembly of the second embodiment of the present invention in a retracted state.

[0040] Figure 15 A partial schematic diagram showing the second rail of the slide rail assembly according to the second embodiment of the present invention is shown in which the second rail is in a predetermined position relative to the third rail.

[0041] Figure 16 This diagram shows a cross-sectional view of the slide rail assembly of the second embodiment of the present invention, in which the second rail is positioned relative to the third rail at the predetermined position.

[0042] Figure 17 This shows a partial schematic diagram of the second track according to a third embodiment of the present invention. Detailed Implementation

[0043] like Figure 2 and Figure 3As shown, a slide rail assembly 100 according to a first embodiment of the present invention includes a first rail 102, a second rail 104, a third rail 106, and a limiting member 108. The third rail 106 is movably installed between the first rail 102 and the second rail 104. The first rail 102, the second rail 104, and the third rail 106 can be longitudinally displaced relative to each other. The first rail 102, the third rail 106, and the second rail 104 are, for example, an outer rail, a middle rail, and an inner rail, respectively, but the implementation is not limited. It is worth mentioning that in this embodiment, the X-axis direction is the longitudinal direction (or the length direction or displacement direction of the slide rail), the Y-axis direction is the transverse direction (or the lateral direction of the slide rail), and the Z-axis direction is the vertical direction (or the height direction of the slide rail).

[0044] The first track 102 includes a first wall 110a, a second wall 110b, and a longitudinal wall 112 connected between the first wall 110a and the second wall 110b. The first wall 110a, the second wall 110b, and the longitudinal wall 112 of the first track 102 together define a channel. The first track 102 is provided with a bracket 114, which is connected to (e.g., fixed to) the first track 102 and can be considered as part of the first track 102. In other words, the bracket 114 and the first track 102 can be considered as an integral part. The first track 102 has a first end 102a and a second end 102b located away from the first end 102a. The first end 102a and the second end 102b are, for example, a front end and a rear end, but are not limited in implementation. The bracket 114 has an upper support portion 116a, a lower support portion 116b and an intermediate support portion 118 connected between the upper support portion 116a and the lower support portion 116b. The upper support portion 116a is located on the first wall 110a adjacent to the first rail 102, the lower support portion 116b is located on the second wall 110b adjacent to the first rail 102, and the intermediate support portion 118 is located on the longitudinal wall 112 adjacent to the first rail 102.

[0045] Preferably, the bracket 114 has a limiting feature 120, which includes an upper portion 120a, a lower portion 120b, and a middle portion 120c. The upper portion 120a, the lower portion 120b, and the middle portion 120c together define a limiting space S.

[0046] Preferably, the limiting feature 120 is a notch type.

[0047] Preferably, the middle portion 120c of the limiting feature 120 is located at the first end portion 102a (e.g., the front end portion) adjacent to the first rail 102, while the upper portion 120a and the lower portion 120b of the limiting feature 120 are located beyond the first end portion 102a (e.g., the front end portion) of the first rail 102.

[0048] The third rail 106 is movably installed within the channel of the first rail 102. The third rail 106 includes a first wall 122a, a second wall 122b, and a longitudinal wall 124 connected between the first wall 122a and the second wall 122b of the third rail 106. The first wall 122a, the second wall 122b, and the longitudinal wall 124 of the third rail 106 together define a channel. The third rail 106 has a first end 106a and a second end 106b located away from the first end 106a. The first end 106a and the second end 106b are, for example, a front end and a rear end, but are not limited in implementation.

[0049] The second rail 104 is movably installed within the channel of the third rail 106. The second rail 104 includes a first wall 126a, a second wall 126b, and a longitudinal wall 128 connected between the first wall 126a and the second wall 126b of the second rail 104. The second rail 104 has a first end 104a and a second end 104b away from the first end 104a. The first end 104a and the second end 104b are, for example, a front end and a rear end, but are not limited in implementation.

[0050] Preferably, the slide rail assembly 100 further includes at least one sliding aid, and the first rail 102, the second rail 104, and the third rail 106 are supported relative to each other by the at least one sliding aid. For example, the slide rail assembly 20 includes at least one sliding aid to improve the smoothness of the relative displacement of the first rail 102 and the third rail 106. Here, the at least one sliding aid is exemplified by a first bead 134a and a second bead 134b located in the channel of the first rail 102, and each of the first bead 134a and the second bead 134b having a plurality of rolling elements 136 for supporting the first wall 122a and the second wall 122b of the third rail 106, but the implementation is not limited to this. On the other hand, the slide rail assembly 20 also includes at least one other sliding aid to facilitate the smoothness of relative displacement between the second rail 104 and the third rail 106. Here, the at least one other sliding aid is exemplified by a first sliding aid 138 and a second sliding aid 140 movably mounted within the channel of the third rail 106. The first sliding aid 138 and the second sliding aid 140 can respectively support different sections of the second rail 104, and both the first sliding aid 138 and the second sliding aid 140 include a plurality of first ball bearings 142a and a plurality of second ball bearings 142b (this part can also be referred to in conjunction with...). Figure 6The first ball bearings 142a of the first sliding device 138 and the second sliding device 140 are supported between the first wall 122a of the third rail 106 and the first wall 126a of the second rail 104, and the second ball bearings 142b of the first sliding device 138 and the second sliding device 140 are supported between the second wall 122b of the third rail 106 and the second wall 126b of the second rail 104.

[0051] like Figure 3 , Figure 4 and Figure 5 As shown, the limiting member 108 is disposed on the second rail 104, and the limiting member 108 has a first portion 130 and a second portion 132. Preferably, the limiting member 108 is fixedly disposed on the second rail 104, and the second portion 132 of the limiting member 108 extends substantially vertically from the first portion 130. Preferably, the limiting member 108 is located at the first end 104a adjacent to the second rail 104, but the implementation is not limited to this.

[0052] like Figure 6 and Figure 7 As shown, the second rail 104 and the third rail 106 can be positioned relative to the first rail 102 at a predetermined position P (e.g., a folded position, such as...). Figure 6 (As shown). The first rail 102 and the third rail 106 are supported relative to each other by at least one slip-aiding device (e.g., the first bead 134a and the second bead 134b); conversely, the third rail 106 and the second rail 104 are supported relative to each other by at least another slip-aiding device (e.g., the first slip-aiding device 138 and the second slip-aiding device 140). When the second rail 104 and the third rail 106 are at the predetermined position P relative to the first rail 102, a first predetermined distance K1 exists between a first end (e.g., the front end) of the at least other slip-aiding device (e.g., the first slip-aiding device 138) and the first end 106a of the third rail 106, and a second predetermined distance K2 exists between a first end (e.g., the front end) of the at least one slip-aiding device (e.g., the first bead 134a and the second bead 134b) and the first end 102a of the first rail 102. Figure 6 (As shown).

[0053] Furthermore, when the second rail 104 and the third rail 106 are respectively displaced relative to the first rail 102 from the predetermined position P along a first direction D1 (e.g., longitudinal direction) to a first extended position E1 and a second extended position E2 (e.g., ... Figure 7As shown, the limiting member 108 is away from the front ends 102a and 106a of the first rail 102 and the third rail 106, and the at least one other sliding device (e.g., the first sliding device 138) and the at least one sliding device (e.g., the first bead 134a and the second bead 134b) are also displaced in the first direction D1 and move closer to the first end 106a of the third rail 106 and the first end 102a of the first rail 102, respectively.

[0054] Preferably, the slide rail assembly 100 further includes at least one support base, such as a first support base 144a disposed on the first wall 122a of the adjacent third rail 106, and a second support base 144b disposed on the second wall 122b of the adjacent third rail 106. Here, the first support base 144a and the second support base 144b are located near the first end 106a of the third rail 106 and at the channel opening of the channel of the third rail 106, for example. The slide rail assembly also includes two first stops 145 (e.g., two front stops) respectively disposed on the first wall 110a and the second wall 110b of the adjacent first rail 102. Here, the two first stops 145 are located near the first end 102a of the first rail 102 and at the channel opening of the channel of the first rail 102, for example. When the second rail 104 and the third rail 106 are displaced relative to the first rail 102 in the first direction D1 to the first extension position E1 and the second extension position E2 respectively (e.g. Figure 7 As shown), at least one other slip aid (e.g., the first slip aid 138) is blocked by the first support 144a and the second support 144b of the third rail 106, and at least one slip aid (e.g., the first bead 134a and the second bead 134b) is blocked by the two first stops 145 of the first rail 102.

[0055] like Figure 6 , Figure 8 and Figure 9 As shown, when the second rail 104 and the third rail 106 are at the predetermined position P relative to the first rail 102, the first part 130 of the limiting member 108 is disposed at the first end (e.g., the front end) 102a, 104a, and 106a of the adjacent first rail 102, the second rail 104, and the third rail 106, while the second part 132 of the limiting member 108 is used to prevent the first rail 102, the second rail 104, and the third rail 106 from separating from each other in a second direction D2 (e.g., laterally or sideways), and the first direction D1 and the second direction D2 are substantially perpendicular to each other.

[0056] Preferably, when the second rail 104 and the third rail 106 are at the predetermined position P relative to the first rail 102, the limiting space S of the limiting feature 120 of the bracket 114 is used to allow the second part 132 of the limiting member 108 to extend into it, so that the second part 132 of the limiting member 108 forms a limiting relationship with the upper part 120a, the lower part 120b and the middle part 120c of the limiting feature 120 (e.g., Figure 8 and Figure 9 (As shown).

[0057] Preferably, when the second rail 104 and the third rail 106 are at the predetermined position P relative to the first rail 102, the first end (e.g., the front end) of the at least one other slip-aiding device (e.g., the first slip-aiding device 138) and the first end 106a of the third rail 106 have the first predetermined distance K1 (e.g., ...). Figure 6 As shown), and the first end (e.g., the front end) of the at least one sliding device (e.g., the first bead 134a and the second bead 134b) and the first end 102a of the first rail 102 have the second predetermined distance K2 (e.g., as shown). Figure 6 (As shown). That is, if the second rail 104 fails to be supported by the at least one other sliding device (e.g., the first sliding device 138 and the second sliding device 140) within the first predetermined distance K1, and the third rail 106 fails to be supported by the at least one sliding device (e.g., the first bead 134a and the second bead 134b) within the second predetermined distance K2, then if a force (or external force) is applied to the slide rail assembly 100, the rail segments of the first rail 102, the second rail 104, and the third rail 106 within these predetermined distances K1 and K2 may therefore fail to be effectively supported and may be affected by the force (or external force), causing the rail segments of the first rail 102, the second rail 104, and the third rail 106 to separate from each other. Therefore, in this embodiment, a portion (e.g., the second portion 132) of the limiting member 108 can be adjacent to one side L of the longitudinal wall 112 of the first rail 102 (or the side L of the middle support portion 118 of the bracket 114 of the first rail 102). For example, this portion (e.g., the second portion 132) of the limiting member 108 can engage with the side L of the longitudinal wall 112 of the first rail 102 (or engage with the side L of the middle support portion 118 of the bracket 114 of the first rail 102, such as...). Figure 8 and Figure 9 As shown), this is to prevent the first rail 102, the second rail 104, and the third rail 106 from moving or disengaging relative to each other in the second direction D2 (e.g., laterally or sideways). That is, once the force is applied to the slide rail assembly 100 in the second direction D2 (as shown in Figure 8), it prevents the slide rail assembly 100 from moving or disengaging relative to each other. Figure 9As shown), the portion of the limiting member 108 (e.g., the second part 132) is adjacent to the side L of the longitudinal wall 112 of the first rail 102 (or the side L of the middle support portion 118 of the bracket 114 of the first rail 102), so that the portion of the limiting member 108 (e.g., the second part 132) and the side L of the longitudinal wall 112 of the first rail 102 (or the side L of the middle support portion 118 of the bracket 114 of the first rail 102) can come into contact with each other to create a blocking effect, so as to prevent the first rail 102, the second rail 104 and the third rail 106 from moving or disengaging relative to each other in the second direction D2 (e.g., laterally or sideways). The first portion 130 and the second portion 132 of the limiting member 108 together define a space that can accommodate at least a portion of the first end 102a of the first rail 102 (or the middle portion 120c of the bracket 114) and at least a portion of the first end 106a of the third rail 106 (e.g., Figure 8 and Figure 9 (As shown).

[0058] Preferably, the first support 144a has a first groove 146, and the second support 144b has a second groove 148 (e.g., ...). Figure 8 (As shown). On the other hand, the first wall 126a of the second rail 104 has a first support leg 150 extending into the first groove 146, and the second wall 126b of the second rail 104 has a second support leg 152 extending into the second groove 148. When the second rail 104 and the third rail 106 are at the predetermined position P relative to the first rail 102, the second rail 104 extends into the first groove 146 via the first support leg 150, and the second rail 104 extends into the second groove 148 via the second support leg 152, to prevent the second rail 104 and the third rail 106 from moving or disengaging relative to each other in the second direction D2 (e.g., as shown). Figure 8 (As shown).

[0059] As mentioned above, once the force acts on the slide rail assembly 100 in the second direction D2 (e.g.) Figure 8 and Figure 9As shown), even if the first wall 126a and the second wall 126b of the second rail 104 within a portion of the track segment within the first predetermined distance K1 range can be supported by the first support 144a and the second support 144b respectively, if the applied force is large enough, the first support leg 150 of the first wall 126a and the second support leg 152 of the second wall 126b of the second rail 104 may still extend in the second direction D2 from the first groove 146 of the first support 144a and the second groove 148 of the second support 144b respectively. The separation causes the first wall 126a and the second wall 126b of a portion of the second rail 104 within the first predetermined distance K1 range to fail to be properly positioned within the passage of the third rail 106. Therefore, embodiments of the present invention provide that the portion of the limiting member 108 (e.g., the second portion 132) adjacent to the side L of the longitudinal wall 112 of the first rail 102 (or the side L of the middle support portion 118 of the bracket 114 of the first rail 102) can be used to prevent the second rail 104 and the third rail 106 from moving relative to each other in the second direction D2 (e.g., ...). Figure 8 As shown), the limiting member 108 can be used to ensure that the first support leg 150 of the first wall 126a of the second rail 104 and the second support leg 152 of the second wall 126b will not detach from the first groove 146 of the first support seat 144a and the second groove 148 of the second support seat 144b, respectively. This ensures that the second rail 104 can be stably installed in the channel of the third rail 106 without being affected by the force (or external force), so that the slide rail assembly 100 has reliability and safety in use.

[0060] like Figure 10 and Figure 11 The slide rail assembly 200 illustrating a second embodiment of the present invention includes a first rail 202, a second rail 204, a third rail 206, and a limiting member 208. The third rail 206 is movably mounted between the first rail 202 and the second rail 204.

[0061] like Figure 11 , Figure 12 and Figure 13 As shown, the limiting member 208 is disposed on the second rail 204, and the limiting member 208 has a first portion 230 and a second portion 232. Preferably, the limiting member 208 is fixedly disposed on the second rail 204, and the second portion 232 of the limiting member 208 extends substantially vertically from the first portion 230. Preferably, the limiting member 208 is located at the first end 204a adjacent to the second rail 204, but the implementation is not limited to this.

[0062] like Figure 14As shown, the second rail 204 and the third rail 206 can be positioned relative to the first rail 202 at a predetermined position P (e.g., a folded position). The first rail 202 and the third rail 206 are supported relative to each other by at least one slip-aiding device (e.g., the first bead 234a and the second bead 234b); conversely, the third rail 206 and the second rail 204 are supported relative to each other by at least another slip-aiding device (e.g., the first slip-aiding device 238 and the second slip-aiding device 240). When the second rail 204 and the third rail 206 are positioned relative to the first rail 202 at the predetermined position P, a first predetermined distance K1 exists between the first end (e.g., the front end) of the at least other slip-aiding device (e.g., the first slip-aiding device 238) and the first end 206a of the third rail 206.

[0063] like Figure 14 , Figure 15 and Figure 16 As shown, when the second rail 204 is at the predetermined position P relative to the third rail 206, the first part 230 of the limiting member 208 is disposed at the first end (front end) 204a, 206a of the adjacent second rail 204 and third rail 206, while the second part 232 of the limiting member 208 is used to prevent the second rail 204 and the third rail 206 from moving towards each other in the second direction D2 (e.g., laterally or sideways, such as...). Figure 15 and Figure 16 (As shown) detachment. The first direction D1 and the second direction D2 are essentially perpendicular.

[0064] Preferably, when the second rail 204 is at the predetermined position P relative to the third rail 206, the first end (e.g., the front end) of the at least one other slip-aiding device (e.g., the first slip-aiding device 238) and the first end 206a of the third rail 206 have the first predetermined distance K1 (e.g., ...). Figure 6(As shown). That is, if the second rail 204 is not supported by the at least one other sliding device (e.g., the first sliding device 238 and the second sliding device 240) within the first predetermined distance K1, then if the slide rail assembly 200 is subjected to a force (or external force), the rail segments of the second rail 204 and the third rail 206 within the first predetermined distance K1 may not be effectively supported and may be affected by the force (or external force), causing the rail segments of the second rail 204 and the third rail 206 to separate from each other. Therefore, in this embodiment, a portion (e.g., the second portion 232) of the limiting member 208 can be adjacent to one side L' of the longitudinal wall 224 of the third rail 206. For example, this portion (e.g., the second portion 232) of the limiting member 208 can engage with the side L' of the longitudinal wall 224 of the third rail 206 to prevent the second rail 204 and the third rail 206 from moving or disengaging relative to each other in the second direction D2 (e.g., laterally or sideways). That is, once the force is applied to the slide rail assembly 200 in the second direction D2 (e.g., as shown in 15 and...), Figure 16 As shown, the portion of the limiting member 208 (e.g., the second part 232) is adjacent to the side L' of the longitudinal wall 224 of the third rail 206, allowing the portion of the limiting member 208 (e.g., the second part 232) and the side L' of the longitudinal wall 224 of the third rail 206 to come into contact with each other and create a blocking effect to prevent the second rail 204 and the third rail 206 from moving or disengaging relative to each other in the second direction D2 (e.g., laterally or sideways). The first part 230 and the second part 232 of the limiting member 208 together define a space that can accommodate at least a portion of the first end 206a of the third rail 206.

[0065] Preferably, the first support 244a has a first groove 246, and the second support 244b has a second groove 248. On the other hand, the first wall 226a of the second rail 204 has a first support leg 250 extending into the first groove 246, and the second wall 226b of the second rail 204 has a second support leg 252 extending into the second groove 248. When the second rail 204 is at the predetermined position P relative to the third rail 206, the second rail 204 extends into the first groove 246 via the first support leg 250, and into the second groove 248 via the second support leg 252, to prevent the second rail 204 and the third rail 206 from moving or separating relative to each other in the second direction D2 (e.g., ...). Figure 15 and Figure 16 (As shown).

[0066] As mentioned above, once the force acts on the slide rail assembly 200 in the second direction D2 (e.g.) Figure 14 , Figure 15 and Figure 16As shown, even if the first wall 226a and the second wall 226b of a portion of the second rail 204 within the first predetermined distance K1 range can be supported by the first support 244a and the second support 244b respectively, if the applied force is large enough, the first support leg 250 of the first wall 226a and the second support leg 252 of the second wall 226b of the second rail 204 may still disengage from the first groove 246 of the first support 244a and the second groove 248 of the second support 244b respectively in the second direction D2, causing the first wall 226a and the second wall 226b of the second rail 204 within the first predetermined distance K1 range to fail to be properly located in the channel of the third rail 206. Therefore, embodiments of the present invention provide that the portion (e.g., the second portion 232) of the limiting member 208 is adjacent to the side L' of the longitudinal wall 224 of the third rail 206, which can be used to prevent the second rail 204 and the third rail 206 from moving relative to each other in the second direction D2 (e.g. Figure 15 and Figure 16 As shown), the limiting member 208 can be used to ensure that the first support foot 250 of the first wall 226a of the second rail 204 and the second support foot 252 of the second wall 226b will not detach from the first groove 246 of the first support seat 244a and the second groove 248 of the second support seat 244b, respectively. This ensures that the second rail 204 can be stably installed in the channel of the third rail 206 without being affected by the force (or external force), so that the slide rail assembly 200 has reliability and safety in use.

[0067] Figure 17 This illustrates an embodiment of the second track 300 according to a third embodiment of the present invention. Specifically, unlike the first embodiment where the limiting member 108 is an additional component attached to the second track 104, the second track 300 in this embodiment directly integrates the limiting member 302, that is, the second track 300 is directly formed with the limiting member 302.

[0068] Although the present invention has been described with reference to specific embodiments, those skilled in the art should recognize that the above embodiments are merely illustrative of the invention, and various equivalent changes and modifications can be made without departing from the spirit of the invention. Therefore, any changes or modifications to the above embodiments within the scope of the essential spirit of the invention will fall within the scope of the claims of this application.

Claims

1. A slide rail assembly, comprising a first rail, a second rail, and a third rail, wherein, The first rail includes a first wall, a second wall, and a longitudinal wall connected between the first wall and the second wall of the first rail; the second rail includes a first wall, a second wall, and a longitudinal wall connected between the first wall and the second wall of the second rail; the third rail is movably installed between the first rail and the second rail, and the second rail and the third rail are movable relative to the first rail from a retracted position along a first direction, characterized in that: The slide rail assembly also includes a limiting member having a first portion and a second portion that extends substantially perpendicularly from the first portion. The first rail is provided with a bracket, which is fixedly connected to the first rail. The bracket has an upper support part, a lower support part, an intermediate support part connected between the upper support part and the lower support part, and a limiting feature arranged in the intermediate support part. The upper support part is located on the first wall adjacent to the first rail, the lower support part is located on the second wall adjacent to the first rail, and the intermediate support part is located on the longitudinal wall adjacent to the first rail. When the second and third rails are in the retracted position relative to the first rail, the first part of the limiting member is located at the front end of the adjacent first, second, and third rails, while the second part of the limiting member can engage one of the longitudinal wall of the first rail and the middle support of the bracket to prevent the first, second, and third rails from separating from each other in a second direction, which is substantially perpendicular to the second direction.

2. The slide rail assembly according to claim 1, characterized in that, The limiting feature includes an upper part, a lower part, and a middle part. The upper part, the lower part, and the middle part together define a limiting space for the second part of the limiting member to extend into and form a limiting relationship with the upper part, the lower part, and the middle part of the limiting feature.

3. The slide rail assembly according to claim 1, characterized in that, The limiting feature is a notch shape.

4. The slide rail assembly according to claim 2, characterized in that, The middle part of the limiting feature is located at the front end adjacent to the first rail, while the upper and lower parts of the limiting feature are located at the front end beyond the first rail.

5. The slide rail assembly according to claim 1, characterized in that, The limiting member is fixedly mounted on the second track.

6. The slide rail assembly according to claim 5, characterized in that, The limiting member is integrated with the second rail.

7. The slide rail assembly according to claim 5, characterized in that, When the second and third rails are displaced from the retracted position to an extended position relative to the first rail, the limiting member moves away from the front ends of the first and third rails.

8. The slide rail assembly according to claim 1, characterized in that, The slide rail assembly further includes at least one sliding aid device, and the first rail, the second rail, and the third rail are supported relative to each other by the at least one sliding aid device.

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