CN110893055B

CN110893055B - Sliding rail assembly

Info

Publication number: CN110893055B
Application number: CN201811062558.7A
Authority: CN
Inventors: 陈庚金; 杨顺和; 黄建立; 王俊强
Original assignee: King Slide Works Co Ltd; King Slide Technology Co Ltd
Current assignee: King Slide Works Co Ltd; King Slide Technology Co Ltd
Priority date: 2018-09-12
Filing date: 2018-09-12
Publication date: 2021-07-13
Anticipated expiration: 2038-09-12
Also published as: CN110893055A

Abstract

The invention relates to a slide rail assembly, which comprises a first rail, a second rail, a sliding assisting device, a clamping piece and a supporting structure. The second rail can move relative to the first rail; the sliding assisting device is used for assisting the displacement of the second rail and the first rail relative to each other; the clamping piece and the supporting structure are arranged on the first rail; the second rail can move from a folding position to a first direction relative to the first rail and is detached from the first rail; when the second rail moves to the first direction and is detached, the sliding-assistant device moves to be adjacent to the clamping piece; when the second rail moves towards a second direction from the passage opening of the first rail to the folding position, the supporting structure is used for supporting the second rail; the support structure includes a portion extending a distance beyond the engaging member in the first direction.

Description

Sliding rail assembly

Technical Field

The present invention relates to a slide rail, and more particularly, to a slide rail assembly with reliable quality.

Background

For example, U.S. patent No. 6,254,210B1 discloses a slide rail assembly having a ball retainer and a guide block, which includes an outer rail, a middle rail and an inner rail. Wherein, a ball retainer is arranged between the inner rail and the middle rail, and the ball retainer is provided with a concave part which can be clamped in the guide block by a protrusion.

For example, U.S. patent No. 6,851,773B2 discloses a slide rail assembly including a first rail, a second rail, and a sliding aid disposed between the first rail and the second rail. When the second rail is detached from the first rail by moving towards the opening direction, the retainer arranged on the first rail can be used for clamping the clamping hook of the sliding aid piece through the clamping hook, so that the sliding aid piece can be temporarily kept at a position, and the sliding aid piece has the effect of supporting a specific part of the second rail when the second rail is installed in the first rail channel again from the outside of the channel of the first rail.

Alternatively, as shown in fig. 1 and 2, which are appended to the present application, a sliding track assembly 100 of the prior art shown in fig. 1 and 2 includes a first track 102, a second track 104 longitudinally displaceable relative to the first track 102, and a ball device 106 disposed between the first track 102 and the second track 104 for facilitating smooth displacement of the second track 104 relative to the first track 102. Wherein, a length K1 of a spring arm 109 of a latch 108 is used as a diameter to define an area a, which includes the latch 108 and a stopper 110 disposed at the front end 102a of the adjacent first rail 102; and, two lead-in bars 112 are substantially located on the two corresponding sides of the area a. Further, the elastic arm 109 of the detent member 108 can be used to engage with a hook 107 of the ball device 106, so that the ball device 106 is temporarily kept in a position. On the other hand, a blocking portion 111 of the blocking seat 110 can block a rotation blocking member (not shown) on the second rail 104 when the second rail 104 is located at an opening position relative to the first rail 102, so as to prevent the second rail 104 from being displaced from the opening position toward an opening direction, and once the rotation blocking member is operated and is no longer blocked by the blocking seat 110, the second rail 104 can continue to be displaced toward the opening direction and be detached from the channel of the first rail 102.

When the second rail 104 is detached from the first rail 102, if the user wants to install the second rail 104 into the channel of the first rail 102 from the outside of the first rail 102 in a retracting direction D again, the two guiding bars 112 can be used to support the upper wall and the lower wall of the end portion of the second rail 104 in advance, so as to help other portions of the second rail 104 gradually enter the channel of the first rail 102 in the retracting direction D and be supported by the ball device 106. Since the detent 108 and the stop 110 are disposed in the same area a of the first rail 102, which also means that when the ball device 106 is caught by the elastic arm 109 of the detent 108, the ball device 106 is close to the area a, so that if the longitudinal length of the guide-in strip 112 is too short, the distance between the end part of the second rail 104 supported by the guide-in strip 112 is not enough, and the roll is liable to be unstable, in this case, the end 104a of the second rail 104 may hit the ball 106a or the front end part of the ball device 106 due to slight angular deviation, so that the ball device 106 is deformed or damaged; alternatively, if the longitudinal length of the lead-in strip 112 is too short, it may cause the end portion of the second rail 104 to be supported by the ball device 106, and the end portion of the second rail 104 may easily shake due to the tolerance problem between the ball 106a and the sliding rail, which may affect the smoothness of the installation of the second rail 104 to the first rail 102. Therefore, how to develop a different sliding track product is obviously a non-negligible issue.

Disclosure of Invention

The present invention provides a slide rail assembly that facilitates improved stability of mounting one slide rail to another slide rail.

According to an aspect of the present invention, a sliding rail assembly includes a first rail, a second rail, a sliding assisting device, a locking member, a blocking structure and at least one supporting structure. The first rail comprises an upper wall, a lower wall and a longitudinal wall connected between the upper wall and the lower wall, wherein the upper wall, the lower wall and the longitudinal wall define a channel; the second rail is movably arranged in the channel of the first rail; the sliding assisting device is used for assisting the displacement of the second rail and the first rail relative to each other; the clamping piece is arranged in a first area of the longitudinal wall of the first rail; the blocking structure is arranged in a second area of the longitudinal wall of the first rail; the at least one supporting structure is arranged on the first rail; wherein, a preset longitudinal distance is arranged between the first area and the second area; the first region is farther from the passage opening of the passage than the second region, and the second region is closer to the passage opening of the passage than the first region.

Preferably, the length of the detent member is used as a diameter to define the first area.

Preferably, the slide assembly further comprises a first operating member operatively connected to the second rail, the second rail being blocked by the blocking structure by the first operating member in a state to prevent displacement of the second rail from the open position to the first direction when the second rail is displaced relative to the first rail from a retracted position to a first direction; when the first working piece is operated and is not in the state any more, the second rail can move to the outside of the channel of the first rail from the opening position to the first direction; when the second rail moves relative to the first rail from the folding position to the first direction and out of the channel of the first rail, the sliding assisting device can be clamped on the clamping piece in response to the displacement of the second rail; when the second rail is displaced from the passage of the first rail to the retracted position in a second direction from the passage opening of the first rail, the at least one support structure is used for supporting the second rail.

Preferably, the sliding assisting device moves to a clamping arm clamped on the clamping piece in response to the displacement of the second rail, the at least one support structure comprises a support section for supporting the second rail, the support section is provided with a first end and a second end, the first end is close to the clamping piece, and the second end is close to the blocking structure.

Preferably, the at least one supporting structure includes a guiding portion, and the guiding portion is an inclined surface or an arc surface for guiding the second rail to enter the channel of the first rail from the channel opening of the first rail.

Preferably, the sliding aid comprises a holder movably installed in the channel of the first rail, the holder having an upper support wall, a lower support wall and a side wall connected between the upper support wall and the lower support wall, the upper support wall and the lower support wall being respectively configured with a plurality of rolling members for being supported between the first rail and the second rail.

Preferably, the first working member is pivoted to the second rail, and the slide rail assembly further includes an elastic seat having a first elastic portion for providing an elastic force to the first working member.

Preferably, the slide rail assembly further comprises a second working member pivotally connected to the second rail, and the elastic base has a second elastic portion for providing an elastic force to the second working member, and when the second rail is located at the open position relative to the first rail, the second rail passes through the first working member and the second working member and is located on both sides of the blocking structure respectively.

Preferably, the slide rail assembly includes two support structures respectively disposed on the upper wall and the lower wall of the adjacent first rail for respectively supporting two opposite portions of the second rail.

Preferably, each support structure has a mounting structure for mounting to a corresponding feature of the first rail.

Preferably, the slide rail assembly further comprises a fixing seat attached to the longitudinal wall of the first rail, the fixing seat being capable of pressing each of the supporting structures, the blocking structure being located on the fixing seat, and the blocking structure protruding laterally relative to the longitudinal wall of the first rail.

Preferably, the slide rail assembly further comprises a base disposed on the longitudinal wall of the first rail, the base having a supporting portion for supporting the engaging arm of the engaging member.

According to another aspect of the present invention, a sliding rail assembly includes a first rail, a second rail, a sliding assisting device, a locking member and at least one supporting structure. The first rail includes a channel; the second rail is movably arranged in the channel of the first rail; the sliding assisting device is used for assisting the displacement of the second rail and the first rail relative to each other; the clamping piece is arranged on the first rail; the at least one supporting structure is arranged on the first rail; the second rail can move to the outside of the channel of the first rail from a folding position to a first direction relative to the first rail; when the second rail moves relative to the first rail from the folding position to the first direction to the outside of the channel of the first rail, the sliding assisting device responds to the displacement of the second rail and moves to a clamping part adjacent to a clamping arm of the clamping piece; when the second rail is displaced from the passage of the first rail to the retracted position in a second direction from the passage opening of the first rail, a support section of the at least one support structure is used for supporting the second rail; the support section of the at least one support structure is provided with a first end and a second end, and the second end exceeds the clamping piece by a distance towards the first direction.

Preferably, the engaging portion of the engaging arm of the engaging member extends beyond the first end of the supporting section of the at least one supporting structure in the second direction, and the sliding assisting device engages with the engaging portion of the engaging arm of the engaging member in response to the displacement of the second rail.

Preferably, the length of the support section of the at least one support structure is at least twice greater than the length of the latch arm of the latch member.

Drawings

For further explanation of the above objects, structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a second rail of a sliding track assembly of the prior art, shown with a channel in a direction ready for mounting to a first rail.

Fig. 2 is a schematic view showing a process of mounting the second rail of the slide rail assembly of the prior art to the channel of the first rail in the direction.

Fig. 3 is a schematic view illustrating the slide rail assembly of the embodiment of the invention mounted to a rack.

Fig. 4 is an exploded view of the slide rail assembly according to the embodiment of the invention.

Fig. 5 is a schematic view of a slide rail assembly according to an embodiment of the invention.

Fig. 6 is a schematic view illustrating a slide rail assembly in a retracted state according to an embodiment of the present invention.

Fig. 7 is a schematic view illustrating a second rail of the slide rail assembly according to the embodiment of the invention being displaced toward an open position in a first direction relative to a first rail.

Fig. 8 is a schematic view illustrating that the second rail of the slide rail assembly of the embodiment of the invention is continuously displaced toward the first direction relative to the first rail.

Fig. 9 is a schematic view of the second rail of the slide rail assembly in the open position relative to the first rail according to the embodiment of the invention.

Fig. 10 is a schematic view illustrating the second rail of the slide rail assembly of the embodiment of the invention being continuously displaced from the open position to the first direction relative to the first rail.

Fig. 11 is a schematic view of the second rail of the slide rail assembly of the embodiment of the invention detached from the first rail.

Fig. 12 is a schematic view of a second rail of the slide rail assembly of the embodiment of the invention, in a second direction, ready to be mounted to a channel of the first rail.

Fig. 13 is a schematic view illustrating a process of mounting the second rail of the slide rail assembly to the channel of the first rail in the second direction according to the embodiment of the invention.

Detailed Description

As shown in fig. 3, a slide rail assembly 20 according to an embodiment of the present invention includes a first rail 22 and a second rail 24 movably mounted on the first rail 22. In this embodiment, the first rail 22 is connected to a bracket 21, and the bracket 21 is arranged with at least one mounting portion, such as a first mounting portion 26a, a second mounting portion 26b, and a third mounting portion 26c, disposed through a post hole of a first post 28a, a second post 28b, and a third post 28c of a rack (rack).

As shown in fig. 4 and 5, the first rail 22 includes a channel 23. Preferably, the first rail 22 includes an upper wall 22a, a lower wall 22b and a longitudinal wall 22c connected between the upper wall 22a and the lower wall 22b, the upper wall 22a, the lower wall 22b and the longitudinal wall 22c defining the channel 23. On the other hand, the second rail 24 is movably mounted in the channel 23 of the first rail 22. The second rail 24 comprises an upper wall 24a, a lower wall 24b and a longitudinal wall 24c connected between the upper wall 24a and the lower wall 24b, and the upper wall 24a, the lower wall 24b and the longitudinal wall 24c of the second rail 24 are respectively located corresponding to the upper wall 22a, the lower wall 22b and the longitudinal wall 22c of the first rail 22.

Further, the slide rail assembly 20 includes a sliding aid 30, a latch 32, and at least one support structure 34. Preferably, it further comprises a stop structure 36, a first working member 38, a spring seat 40, a second working member 42 and a base 44.

The sliding aid 30 is used to facilitate displacement of the second rail 24 and the first rail 22 relative to each other. Preferably, the sliding assistance device 30 is movably mounted in the channel 23 of the first rail 22 and includes a holder having an upper support wall 46a, a lower support wall 46b, and a side wall 46c connected between the upper support wall 46a and the lower support wall 46 b. The upper support wall 46a and the lower support wall 46b are respectively provided with a plurality of rolling members 48 (e.g., balls or rollers) for rolling-supporting between the first rail 22 and the second rail 24. In this regard, the rolling elements of the upper support wall 46a of the sliding assistance device 30 are not shown due to the angle of view.

The latch 32 and the blocking structure 36 are disposed on the first rail 22. Specifically, the latch 32 and the blocking structure 36 are respectively disposed at two different positions of the longitudinal wall 22c of the first rail 22. The engaging member 32 is connected to the first rail 22, and the engaging member 32 is fixed to the longitudinal wall 22c of the first rail 22. The latching member 32 includes a latching arm 32a and a latching portion 32b disposed on the latching arm 32 a. Preferably, the latch arm 32a is an elastic arm, and the latch portion 32b is located near an end of the latch arm 32 a. Alternatively, the blocking structure 36 may be integral with the longitudinal wall 22c of the first rail 22 and project laterally relative to the longitudinal wall 22c of the first rail 22. Preferably, the track assembly 20 further includes a fixing base 35 attached (e.g., fixed) to the longitudinal wall 22c of the first track 22. The blocking structure 36 is located on the fixing seat 35.

The at least one support structure 34 has a predetermined longitudinal length and is disposed on the first rail 22. Here, the at least one supporting structure 34 is exemplified by two. The two support structures 34 are respectively disposed on the upper wall 22a and the lower wall 22b adjacent to the first rail 22 for respectively supporting two opposite portions of the second rail 24, such as the upper wall 24a and the lower wall 24b of the second rail 24. Preferably, each support structure 34 has a plurality of mounting structures 50 for mounting to corresponding features 52 of the longitudinal wall 22c of the first rail 22. For example, each mounting structure 50 and each corresponding feature 52 may be a male or female (hole) structure, but is not limited in implementation. Accordingly, each support structure 34 is mounted to the first rail 22. Preferably, the anchor 35 can press against one of the mounting structures 50 of each support structure 34. On the other hand, the base 44 is disposed on the longitudinal wall 22c of the first rail 22, and the base 44 can press against another of the mounting structures 50 of each support structure 34. Accordingly, the stability and reliability of each support structure 34 mounted to the first rail 22 can be increased.

The first operating member 38, the second operating member 42 and the resilient mount 40 are disposed on the second rail 24, preferably on a longitudinal wall 24c of the second rail 24 (the first operating member 38, the second operating member 42 and the resilient mount 40 are not shown in fig. 5, and this portion can be referred to fig. 4). Wherein the first and second working

members

38, 42 are operatively connected to the second rail 24. Preferably, the first operating member 38 and the second operating member 42 are pivotally connected to the second rail 24 at two locations, respectively. On the other hand, the elastic base 40 has a first elastic portion 40a and a second elastic portion 40b for providing elastic force to the first working member 38 and the second working member 42, respectively, so as to keep the first working member 38 and the second working member 42 in a same state. Preferably, the slide assembly 20 further includes a first operating member 54 and a second operating member 56 for allowing a user to operate the first and second working

members

38 and 42, respectively, to be no longer in that state. Since this part is within the technical scope that can be understood by a person skilled in the art, it is not described herein for the sake of brevity.

As shown in fig. 6, the second rail 24 of the slide assembly 20 is at a retracted position R relative to the first rail 22. The first operating member 38 and the second operating member 42 can be maintained in the same state by the elastic force exerted by the first elastic portion 40a and the second elastic portion 40b of the elastic seat 40 (for example, the first state S1). Wherein the first working member 38 (or the second working member 42) has a predetermined distance from the blocking structure 36. It should be noted that, for simplicity of the drawings, the sliding aid 30 and the locking element 32 are omitted from fig. 6, 7, 8, 9 and 10, so as to clearly show how the first working element 38 and the second working element 42 interact with the blocking structure 36.

As shown in fig. 7, 8 and 9, during the displacement of the second rail 24 relative to the first rail 22 from the retracted position R to a first direction D1, the second operating member 42 contacts a first side of the blocking structure 36 of the first rail 22 (as shown in fig. 7). When the second operating member 42 is further displaced in the first direction D1 relative to the first rail 22, the second operating member 42 interacts with the blocking structure 36 to cause the second operating member 42 to deflect from the state (e.g., the first state S1) to another state (e.g., the second state S2, as shown in fig. 8) at an angle to pass over the first side of the blocking structure 36, at which time the second resilient portion 40b is in a resilient force accumulation state until the second rail 24 is further displaced in the first direction D1 relative to the first rail 22 to an open position E (e.g., a fully open position (as shown in fig. 9), the second operating member 42 returns to the state (e.g., the first state S1) in response to the release of the resilient force of the second resilient portion 40b, at which time the second operating member 42 is located on a second side of the blocking structure 36 (as shown in fig. 9); on the other hand, the first working member 38 in the state (e.g., the first state S1) is located on the first side of the blocking structure 36. In short, when the second rail 24 is at the open position E relative to the first rail 22 (as shown in fig. 9), the second rail 24 is blocked by the blocking structure 36 by the first operating member 38 and the second operating member 42 being at the states (the first state S1) and located at the first side and the second side of the blocking structure 36, respectively, so as to prevent the second rail 24 from being displaced from the open position E to the first direction D1 or the second direction D2.

As shown in fig. 9 and 10, when the second rail 24 is located at the opening position E relative to the first rail 22, if the user wants to displace the second rail 24 from the opening position E to the first direction D1 or the second direction D2, the user can operate the first operating member 38 or the second operating member 42 to be no longer in the state (the first state S1). For example, a user can apply a force to the first operating element 54 in the first direction D1, such that a driving portion 54a of the first operating element 54 can swing the first operating member 38 from the first state (the first state S1) to another state (e.g., the second state S2, as shown in fig. 10), such that the second rail 24 can be displaced from the open position E to the first direction D1 and out of the channel 23 of the first rail 22. Specifically, the second rail 24 is detachable from the first rail 22 through a passage port 23a (shown in fig. 11) of the passage 23 of the first rail 22. It should be noted that the first working member 38, the second working member 42 and the spring seat 40 are omitted from fig. 11. In addition, when the second rail 24 is displaced from the retracted position R to the first direction D1 to the outside of the channel 23 of the first rail 22 relative to the first rail 22, the sliding assistance device 30 moves to the engaging portion 32b adjacent to the engaging arm 32a of the engaging member 32 in response to the displacement of the second rail 24 to the first direction D1, in this embodiment, the sliding assistance device 30 can move and engage with the engaging portion 32b of the engaging arm 32a of the engaging member 32, and each support structure 34 can block the upper support wall 46a and the lower support wall 46b of the sliding assistance device 30 respectively to prevent the sliding assistance device 30 from moving to the first direction D1.

It should be noted that when the second rail 24 is displaced in the first direction D1, the sliding assistance device 30 can be differentially moved (differentially) in the first direction D1 in response to the displacement of the second rail 24; alternatively, the sliding aid 30 can be forcibly driven by a portion of the second rail 24, and both of these ways can allow the sliding aid 30 to move to the engaging portion 32b adjacent to the engaging arm 32a of the engaging member 32 in response to the displacement of the second rail 24.

As shown in fig. 12, the sliding aid 30 is engaged with the engaging portion 32b of the engaging arm 32a of the engaging member 32. Preferably, the base 44 has a supporting portion 44a for supporting the latch arm 32a of the latch member 32. Further, the latch 32 is disposed in a first area a1 of the longitudinal wall 22c of the first rail 22. For example, the first region a1 is defined by, but not limited to, the length K2 of the latch arm 32a of the latch 32 as a diameter. Wherein the first area a1 does not include the blocking structure 36. The blocking structure 36 is disposed in a second area a2 of the longitudinal wall 22c of the first rail 22. Wherein the first region A1 and the second region A2 have a predetermined longitudinal distance X therebetween; wherein the first region a1 is far from the opening 23a of the passage 23 than the second region a2, and the second region a2 is near the opening 23a of the passage 23 than the first region a 1.

As shown in fig. 12 and 13, when the second rail 24 is displaced from the passage 23 of the first rail 22 to the second direction D2 from the passage opening 23a of the first rail 22 to the retracted position, the two supporting structures 34 are used to support two portions (e.g., the upper wall 24a and the lower wall 24b) of the second rail 24 respectively. Preferably, each support structure 34 includes a support section 58 for supporting the second rail 24, and the support section 58 has a first end 58a and a second end 58b opposite to the first end 58 a. Wherein, compared with the second end 58b, the first end 58a is close to the latch 32; and the second end 58b is closer to the blocking structure 36 than the first end 58 a. The second end 58b extends beyond the detent 32 in the first direction D1 (opposite to the second direction D2) by a distance Y. Preferably, the latching portion 32b of the latching arm 32a of the latching member 32 extends beyond the first end 58a of the support section 58 of each support structure 34 in the second direction D2. It should be noted that the length L of the support section 58 of each support structure 34 is at least twice greater than the length of the latch arm 32a of the latch 32.

Preferably, each supporting structure 34 includes a guiding portion 60, and the guiding portion 60 is a slope or a curved surface for guiding an upper wall 24a and a lower wall 24b of a rear end portion of the second rail 24 to enter the channel 23 of the first rail 22 from the channel opening 23a (or outside the channel 23) of the first rail 22, respectively, so as to facilitate the second rail 24 to enter the channel 23 and move toward the second direction D2 toward the retracted position R.

It should be noted that, when the second rail 24 enters the channel 23 of the first rail 22 from the channel opening 23a (or the outside of the channel 23) of the first rail 22 and moves toward the retracted position R in the second direction D2, since the second end 58b of the support section 58 of the support structure 34 exceeds the latch 32 by the distance Y in the first direction D1 (opposite to the second direction D2), therefore, the distance Y can be used to support the second rail 24 to improve the stability of the second rail 24 entering the channel 23 of the first rail 22, and at this time, since the second rail 24 has entered the channel 23 of the first rail 22 far enough, the second rail 24 can be stably displaced in the channel 23 of the first rail 22 in the second direction D2 and the problem of shaking and hitting the sliding aid 30 (such as hitting the front end or the rolling member 48 of the sliding aid 30) can be avoided. This protects the sliding aid 30.

From the above description, it can be seen that the enhanced efficacy and advantages of the present invention are:

a. has stable support without causing the possibility of the sliding assistant device 30 being damaged by the second rail 24.

b. The blocking structure 36 is disposed near the passage opening 23 of the first rail 22, so that the second rail 24 can still maintain the length of the opening stroke.

Although the present invention has been described with reference to the present specific embodiments, it will be recognized by those skilled in the art that the above embodiments are illustrative only, and various equivalent changes and modifications may be made without departing from the spirit of the present invention, and therefore, it is intended to cover in the appended claims all such changes and modifications as fall within the true spirit of the invention.

Claims

1. A slide rail assembly comprising a first rail, a second rail and a sliding aid, wherein the first rail comprises an upper wall, a lower wall and a longitudinal wall connected between the upper wall and the lower wall, the upper wall, the lower wall and the longitudinal wall defining a channel, the second rail being movably mounted in the channel of the first rail, the sliding aid being adapted to facilitate displacement of the second rail and the first rail relative to each other, the sliding aid comprising:

a clamping part is arranged in a first area of the longitudinal wall of the first rail;

a blocking structure is arranged in a second area of the longitudinal wall of the first rail; and

at least one supporting structure is arranged on the first rail;

wherein, a preset longitudinal distance is arranged between the first area and the second area; the first region is farther from the passage opening of the passage than the second region, and the second region is closer to the passage opening of the passage than the first region;

wherein the slide assembly further comprises a first operating member operatively connected to the second rail, the second rail being blocked by the blocking structure by the first operating member in a state to prevent displacement of the second rail from the open position to the first direction when the second rail is displaced from a retracted position to a first direction to an open position relative to the first rail; when the first working piece is operated and is not in the state any more, the second rail can move to the outside of the channel of the first rail from the opening position to the first direction; when the second rail moves relative to the first rail from the folding position to the first direction and out of the channel of the first rail, the sliding assisting device can be clamped on the clamping piece in response to the displacement of the second rail; when the second rail is displaced from the passage of the first rail to the retracted position from the passage opening of the first rail in a second direction, the at least one support structure is used for supporting the second rail;

wherein, the first workpiece is pivoted to the second rail, and the slide rail assembly further comprises an elastic seat which is provided with a first elastic part for providing elastic force to the first workpiece;

when the second rail is at the opening position relative to the first rail, the second rail is respectively positioned at two sides of the blocking structure through the first workpiece and the second workpiece, so that the second rail is prevented from being displaced from the opening position to the first direction or the second direction.

2. The slide rail assembly of claim 1 wherein the length of the latch member defines the first area as a diameter.

3. The slide rail assembly of claim 1 wherein the slide assist device moves to a detent arm that is engaged with the detent in response to displacement of the second rail, the at least one support structure comprising a support section for supporting the second rail, the support section having a first end and a second end, the first end being proximate to the detent and the second end being proximate to the blocking structure.

4. The slide rail assembly of claim 1 wherein the at least one support structure comprises a guide portion, and the guide portion is a slant or a curved surface for guiding the second rail from the opening of the first rail into the channel of the first rail.

5. The slide assembly of claim 1 wherein the sliding assistance device comprises a retainer movably mounted in the channel of the first rail, the retainer having an upper support wall, a lower support wall and a side wall connected between the upper support wall and the lower support wall, the upper support wall and the lower support wall being configured with a plurality of rollers for supporting between the first rail and the second rail.

6. The slide rail assembly of claim 1, comprising two support structures respectively disposed on the upper wall and the lower wall adjacent to the first rail for respectively supporting two opposite portions of the second rail.

7. The slide rail assembly of claim 6 wherein each support structure has a mounting structure for mounting to a corresponding feature of the first rail.

8. The slide rail assembly of claim 7 further comprising a retaining bracket attached to the longitudinal wall of the first rail, the retaining bracket adapted to hold each of the support structures, the blocking structure being located on the retaining bracket and protruding laterally relative to the longitudinal wall of the first rail.

9. The slide rail assembly of claim 3 further comprising a base disposed on the longitudinal wall of the first rail, the base having a support portion for supporting the latch arm of the latch member.

10. A slide assembly comprising a first rail, a second rail, and a slide-assist device, wherein the first rail comprises a channel, the second rail is movably mounted in the channel of the first rail, the slide-assist device is configured to facilitate displacement of the second rail and the first rail relative to each other, the slide-assist device comprising:

a clamping part is arranged on the first rail; and

at least one supporting structure is arranged on the first rail;

the second rail can move to the outside of the channel of the first rail from a folding position to a first direction relative to the first rail;

when the second rail moves relative to the first rail from the folding position to the first direction to the outside of the channel of the first rail, the sliding assisting device responds to the displacement of the second rail and moves to a clamping part adjacent to a clamping arm of the clamping piece;

when the second rail is displaced from the passage of the first rail to the retracted position in a second direction from the passage opening of the first rail, a support section of the at least one support structure is used for supporting the second rail;

the support section of the at least one support structure is provided with a first end and a second end, and the second end exceeds the clamping piece by a distance towards the first direction;

wherein the slide assembly further comprises a first operating member operatively connected to the second rail, and a blocking structure disposed on the first rail, wherein when the second rail is moved relative to the first rail from the retracted position to the first direction to an open position, the second rail is blocked by the blocking structure through the first operating member in a state to prevent the second rail from being moved from the open position to the first direction; when the first workpiece is operated and is not in the state any more, the second rail can move from the opening position to the first direction and move out of the channel of the first rail;

when the second rail is in the open position relative to the first rail, the second rail is respectively in the state through the first workpiece and the second workpiece and is positioned at two sides of the blocking structure so as to prevent the second rail from displacing from the open position to the first direction or the second direction.

11. The slide rail assembly of claim 10 wherein the engaging portion of the engaging arm of the engaging member extends beyond the first end of the support section of the at least one support structure in the second direction, and the slide assist device engages the engaging portion of the engaging arm of the engaging member in response to the displacement of the second rail.

12. The slide rail assembly of claim 10 wherein the support section of the at least one support structure has a length at least twice greater than a length of the latch arm of the latch member.

13. The slide rail assembly of claim 10 wherein the at least one support structure includes a guide portion for guiding the second rail from the opening of the first rail into the channel of the first rail.

14. The slide assembly of claim 10 wherein the sliding assistance device is movably mounted in the channel of the first rail and comprises an upper support wall and a lower support wall, each of the upper support wall and the lower support wall being configured with a plurality of rolling elements for being supported between the first rail and the second rail.

15. The slide rail assembly of claim 10 further comprising two support structures disposed on the upper wall and the lower wall of the adjacent first rail for supporting two portions of the second rail.