CN117918655A - Sliding rail assembly - Google Patents

Abstract

The invention relates to a sliding rail assembly, which comprises a first rail, a second rail, a sliding assisting device and a retaining piece. The second rail is movably arranged in a channel of the first rail, and the second rail can be displaced relative to the first rail; the sliding assisting device is movably arranged between the first rail and the second rail and comprises a clamping feature; the retainer is arranged on the first rail and comprises an elastic part; the resilient portion of the retainer includes a predetermined feature and the first rail includes a limiting feature. The limiting feature is used for preventing the elastic part from deforming due to stress; when the second rail is displaced towards an opening direction relative to the first rail and is detached from the channel of the first rail, the sliding assisting device is positioned at a preset position, and the sliding assisting device can be clamped to the preset feature of the retaining piece through the clamping feature.

Description

Slide rail assembly

Technical Field

The invention relates to a slide rail assembly which is reliable in use.

Background technique

For example, U.S. Patent Publication No. US 6,851,773B2 discloses a slide-assisting member positioning structure of a drawer slide rail, which includes a first rail, a second rail, a slide-assisting member, and a positioning member. The slide-assisting member is movably installed between the first rail and the second rail, and a slot is set at the front end of the slide-assisting member; the positioning member is set at the passage opening of the first rail. When the second rail moves in an opening direction relative to the first rail and is removed from the passage of the first rail, the positioning member can be locked to the slot of the slide-assisting member through an elastic hook rod (the hook portion) to prevent the slide-assisting member from sliding arbitrarily relative to the first rail, which helps the support or stability of the second rail when it is reinserted into the passage of the first rail.

Although the above patent case has disclosed the relevant technical features of the slide-assisting member positioning structure, however, as market demands vary, how to develop a different slide rail product that helps improve reliability has become an issue that cannot be ignored.

Summary of the invention

The object of the present invention is to provide a reliable slide rail assembly.

According to one aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a slide-assisting device, and a retaining member. The first rail includes a channel; the second rail is movably mounted in the channel of the first rail, and the second rail can be longitudinally displaced relative to the first rail; the slide-assisting device is movably mounted between the first rail and the second rail, and the slide-assisting device includes a latching feature; the retaining member is arranged on the first rail, and the retaining member includes an elastic portion; wherein the elastic portion of the retaining member includes a predetermined feature, the first rail includes a limiting feature, and the limiting feature is used to prevent the elastic portion from moving in a lateral direction; wherein, when the second rail is displaced in an opening direction relative to the first rail and is removed from the channel of the first rail, the slide-assisting device is in a predetermined position, and the slide-assisting device can be latched to the predetermined feature of the elastic portion of the retaining member through the latching feature.

Preferably, one of the predetermined feature and the limiting feature is a space, and the other of the predetermined feature and the limiting feature is a convex portion; the convex portion is used to extend into the space.

Preferably, the space is a hole, and the hole is defined by a plurality of hole walls.

Preferably, the first rail includes a first wall, a second wall and a longitudinal wall, the longitudinal wall is 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 jointly define the channel; the retaining member also includes a main body connected to the longitudinal wall of the first rail, the elastic part has a first end section and a second end section, the first end section of the elastic part is connected to the main body, and the predetermined feature is arranged at the second end section of the elastic part.

Preferably, the second end section of the elastic portion includes a first guiding feature and a second guiding feature; and the predetermined feature is arranged between the first guiding feature and the second guiding feature.

Preferably, the main body of the retaining member has a supporting section for supporting the elastic portion.

Preferably, the size of the predetermined feature is substantially larger than the size of the latch feature.

Preferably, the second rail includes a release feature; when the second rail is reinserted into the channel of the first rail from outside the channel of the first rail in a folding direction, the second rail can drive the elastic portion of the retaining member through the release feature, so that the locking feature of the sliding aid device is released from the predetermined feature of the elastic portion of the retaining member, so as to allow the sliding aid device to move from the predetermined position to the folding direction.

Preferably, the sliding aid device further includes a first portion, a second portion and a longitudinal portion, the longitudinal portion is connected between the first portion and the second portion, the first portion, the second portion and the longitudinal portion respectively correspond to the first wall, the second wall and the longitudinal wall of the first rail; the first portion and the second portion of the sliding aid device are both configured with a plurality of balls for respectively supporting the first wall and the second wall of the first rail.

Preferably, the latching feature of the sliding aid device is a latching hook.

According to another aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a slide-assisting device, and a retaining member. The first rail includes a first wall, a second wall, and a longitudinal wall, the longitudinal wall being connected between the first wall and the second wall of the first rail, the first wall, the second wall, and the longitudinal wall of the first rail jointly defining a channel; the second rail is movably mounted in the channel of the first rail, and the second rail can be longitudinally displaced relative to the first rail; the slide-assisting device is movably mounted between the first rail and the second rail, and the slide-assisting device includes a latch feature; the retaining member is arranged on the longitudinal wall of the first rail, and the retaining member includes an elastic portion; wherein the elastic portion of the retaining member includes a space, the longitudinal wall of the first rail includes a convex portion, and the convex portion is used to extend into the space; wherein, when the second rail is displaced in an opening direction relative to the first rail and is removed from the channel of the first rail, the slide-assisting device extends into the space of the elastic portion of the retaining member through the latch feature to prevent the slide-assisting device from arbitrarily displacing relative to the first rail.

Preferably, the space is a hole, and the hole is defined by a plurality of hole walls.

Preferably, the retaining member further comprises a main body connected to the longitudinal wall of the first rail, the elastic portion has a first end section and a second end section, the first end section of the elastic portion is connected to the main body, and the space is arranged at the second end section of the elastic portion.

Preferably, the second end section of the elastic portion includes a first guiding feature and a second guiding feature; and the space is arranged between the first guiding feature and the second guiding feature.

Preferably, the main body of the retaining member has a supporting section for supporting the elastic portion.

Preferably, the size of the space is substantially larger than the size of the latch feature.

Preferably, the second rail includes a release feature; when the second rail is reinserted into the channel of the first rail from outside the channel of the first rail in a folding direction, the second rail can drive the elastic portion of the retaining member through the release feature, so that the locking feature of the sliding aid device is released from the space of the elastic portion of the retaining member, so as to allow the sliding aid device to move from a predetermined position to the folding direction.

Preferably, the sliding aid device further includes a first portion, a second portion and a longitudinal portion, the longitudinal portion is connected between the first portion and the second portion, the first portion, the second portion and the longitudinal portion respectively correspond to the first wall, the second wall and the longitudinal wall of the first rail; the first portion and the second portion of the sliding aid device are both configured with a plurality of balls for respectively supporting the first wall and the second wall of the first rail.

Preferably, the latching feature of the sliding aid device is a latching hook.

Preferably, the elastic portion of the retaining member is provided with an extension section adjacent to the space, and when the sliding aid device extends into the space of the elastic portion of the retaining member through the latch feature, the latch feature corresponds to the extension section.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG. 1 is a schematic three-dimensional assembly diagram of a slide rail assembly according to an embodiment of the present invention.

FIG. 2 is an exploded schematic diagram showing a slide rail assembly according to an embodiment of the present invention.

FIG. 2A is a schematic diagram showing a retaining member of the slide rail assembly according to an embodiment of the present invention.

FIG. 3 is a schematic diagram showing a first rail of the slide rail assembly according to an embodiment of the present invention.

FIG. 4 is a schematic diagram showing a second rail of the slide rail assembly according to an embodiment of the present invention being displaced in an opening direction relative to the first rail.

FIG. 5 is a schematic diagram showing the second rail of the slide rail assembly according to the embodiment of the present invention moving further toward the opening direction relative to the first rail.

FIG. 6 is a schematic diagram showing the second rail of the slide rail assembly according to the embodiment of the present invention being further displaced toward the opening direction relative to the first rail.

FIG. 7 is a schematic diagram showing that the first rail of the slide rail assembly according to the embodiment of the present invention is in an extended position relative to a third rail, and the second rail is removed toward the opening direction relative to the first rail.

FIG. 8 is a schematic diagram showing the second rail of the slide rail assembly according to the embodiment of the present invention being reinserted into the channel of the first rail in a folding direction.

FIG. 9 is a schematic diagram showing the second rail of the slide rail assembly according to the embodiment of the present invention being displaced toward the folding direction relative to the first rail.

FIG. 10 is a schematic diagram showing the second rail of the slide rail assembly according to the embodiment of the present invention continuing to move toward the folding direction relative to the first rail.

FIG. 11 is a schematic diagram showing the second rail of the slide rail assembly according to the embodiment of the present invention being further displaced toward the folding direction relative to the first rail.

Detailed ways

As shown in FIG. 1 and FIG. 2 , a slide rail assembly 20 according to an embodiment of the present invention includes a first rail 22, a second rail 24, a slide aid 26 and a retaining member 28. Preferably, a third rail 30 is further included. The first rail 22 is movably mounted between the third rail 30 and the second rail 24, and the first rail 22 can be used to extend the displacement stroke of the second rail 24 relative to the third rail 30. In this embodiment, the third rail 30 (e.g., an outer rail), the first rail 22 (e.g., a middle rail) and the second rail 24 (e.g., an inner rail) can be longitudinally displaced relative to each other. As shown in FIG. 1 , the X-axis is the longitudinal direction (or the length direction of the slide rail), the Y-axis is the transverse direction (or the lateral direction of the slide rail), and the Z-axis is the vertical direction (or the height direction of the slide rail).

The first rail 22 includes a channel 32. Preferably, the first rail 22 includes a first wall 34a, a second wall 34b and a longitudinal wall 36, the longitudinal wall 36 is connected between the first wall 34a and the second wall 34b of the first rail 22, and the first wall 34a, the second wall 34b and the longitudinal wall 36 of the first rail 22 jointly define the channel 32. The first rail 22 has a front end 22a and a rear end 22b.

The second rail 24 is movably mounted in the channel 32 of the first rail 22, and the second rail 24 can be longitudinally displaced relative to the first rail 22. The second rail 24 includes a first wall 38a, a second wall 38b, and a longitudinal wall 40, and the longitudinal wall 40 is connected between the first wall 38a and the second wall 38b of the second rail 24. The second rail 24 includes a release feature 37, such as a protrusion, and the release feature 37 includes a first guide structure 39a and a second guide structure 39b; the first guide structure 39a and the second guide structure 39b are an inclined surface or a curved surface, but the implementation is not limited thereto.

The sliding aid device 26 is movably installed between the first rail 22 and the second rail 24 , and the sliding aid device 26 includes a latch feature 42 , such as a latch hook. Preferably, the slide-aiding device 26 further includes a first portion 44a, a second portion 44b and a longitudinal portion 46, the longitudinal portion 46 is connected between the first portion 44a and the second portion 44b, and the first portion 44a, the second portion 44b and the longitudinal portion 46 correspond to the first wall 34a, the second wall 34b and the longitudinal wall 36 of the first rail 22, respectively; the first portion 44a and the second portion 44b of the slide-aiding device 26 are both arranged with a plurality of balls 48 (due to the viewing angle, only the balls 48 on the second portion 44b are shown in FIGS. 1 and 2 ), the balls 48 of the first portion 44a and the balls 48 of the second portion 44b are used to respectively support the first wall 34a and the second wall 34b of the first rail 22, and to respectively support the first wall 38a and the second wall 38b of the second rail 24, thereby facilitating the smoothness of the relative displacement of the second rail 24 and the first rail 22.

The retaining member 28 is arranged on the longitudinal wall 36 of the first rail 22, and the retaining member 28 is adjacent to the front end 22a of the first rail 22. The retaining member 38 includes an elastic portion 50 (this portion can be combined with FIG. 2, FIG. 2A, FIG. 3 and FIG. 4), and the elastic portion 50 is, for example, an elastic arm, but the implementation is not limited. The elastic portion 50 of the retaining member 28 includes a predetermined feature 52; the longitudinal wall 36 of the first rail 22 includes a limiting feature 54.

Preferably, one of the predetermined feature 52 and the limiting feature 54 is a space, and the other of the predetermined feature 52 and the limiting feature 54 is a convex portion; the convex portion is used to extend into the space (as shown in Figures 3 and 4). Here, the predetermined feature 52 is a space, and the limiting feature 54 is a convex portion extending into the space as an example, but the implementation is not limited. Preferably, the space is a hole, and the hole is defined by a plurality of hole walls. For example, the elastic portion 50 includes a first hole wall 56a, a second hole wall 56b, a third hole wall 56c and a fourth hole wall 56d, and these hole walls 56a, 56b, 56c, 56d together define a contour having a predetermined shape.

Preferably, the retaining member 28 further includes a main body portion 58 connected (e.g., fixedly connected) to the longitudinal wall 36 of the first rail 22, the elastic portion 50 having a first end segment 60 and a second end segment 62, the first end segment 60 of the elastic portion 50 being connected to the main body portion 58, the second end segment 62 extending from the first end segment 60 and being elastically movable relative to the first end segment 60, wherein the predetermined feature 52 is arranged at the second end segment 62 of the elastic portion 50.

Preferably, the second end section 62 of the elastic portion 50 includes a first guide feature 64 and a second guide feature 66; the predetermined feature 52 is arranged between the first guide feature 64 and the second guide feature 66. The first guide feature 64 and the second guide feature 66 are an inclined surface or an arc surface.

Preferably, the main body 58 of the retaining member 28 has a support section 68, and the support section 68 is used to support the elastic part 50. Here, the support section 68 is bent relative to the main body 58, and the support section 68 is supported on the bottom of the elastic part 50. The elastic part 50 can be supported by the support section 68, which helps to stabilize the elastic part 50 when it moves. The main body 58, the elastic part 50 and the support section 68 can be integrated into one body, so that the retaining member 28 becomes a single component (as shown in FIG. 2A).

As shown in FIG4 , the latch feature 42 of the slide assisting device 26 has a guide section 70, and the guide section 70 is an inclined surface or an arc surface. On the other hand, the elastic portion 50 of the retaining member 28 is in a first state S1. In addition, the elastic portion 50 of the retaining member 28 is arranged with an extension section 72 adjacent to the predetermined feature 52, for example, the extension section 72 extends from the first hole wall 56a toward the second wall 34b of the first rail 22.

When the second rail 24 moves from a folded position to an opening direction D1 to a predetermined stroke relative to the first rail 22, the release feature 37 contacts the first guide feature 64 through the first guide structure 39a, so that the release feature 37 can easily pass over the elastic portion 50, and the sliding aid 26 also moves in the opening direction D1 in response to the displacement of the second rail 24. During this process, the latch feature 42 (the guide section 70) of the sliding aid 26 will contact the first guide feature 64 of the elastic portion 50 of the retaining member 28. Since this part is a technical scope that can be understood by ordinary knowledgeable people familiar with the field, it will not be further elaborated here.

It is worth mentioning that if the displacement speed of the second rail 24 toward the opening direction D1 is too fast, resulting in the instantaneous force of the release feature 37 (the first guide structure 39a) or the latch feature 42 (the guide section 70) of the slide-assisting device 26 contacting the second end section 62 (the first guide feature 64) of the elastic portion 50 being too large, the limiting feature 54 can prevent the second end section 62 of the elastic portion 50 from deforming or warping in a specific direction or angle, wherein the area of the first hole wall 56a corresponding to the limiting feature 54 can be increased through the extension section 72, which helps to prevent the second end section 62 (the first guide feature 64) of the elastic portion 50 from deforming due to force; or, the limiting feature 54 can block the fourth hole wall 56d, thereby preventing the second end section 62 of the elastic portion 50 from moving or deforming in a horizontal direction T due to unexpected force. The horizontal direction T is, for example, the Y-axis direction, or the lateral direction of the first rail 22, as shown in FIG. 4 .

As shown in FIG. 5 , when the second rail 24 continues to move toward the opening direction D1 relative to the first rail 22, a force is generated through the mutual contact between the latch feature 42 (the guide section 70) of the sliding aid 26 and the first guide feature 64 of the elastic portion 50 of the retaining member 28, so that the elastic portion 50 of the retaining member 28 moves from the first state S1 to a second state S2. At this time, the elastic portion 50 accumulates an elastic force.

As shown in FIGS. 6 and 7 , when the second rail 24 is further displaced in the opening direction D1 relative to the first rail 22 and is removed from the channel 32 of the first rail 22 (as shown in FIG. 7 ), the sliding aid 26 moves to a predetermined position K adjacent to the front end 22 a of the first rail 22 , and the sliding aid 26 can be latched to the predetermined feature 52 of the elastic portion 50 of the retaining member 28 through the latch feature 42 (as shown in FIG. 6 ).

Specifically, when the sliding device 26 is in the predetermined position K, the latch feature 42 of the sliding device 26 corresponds to the predetermined feature 52 of the elastic part 50, and the elastic part 50 releases the elastic force, so that the elastic part 50 recovers from the second state S2 to the first state S1 (for example, a locked state), and the sliding device 26 extends into the predetermined feature 52 of the elastic part 50 of the retaining member 28 through the latch feature 42. The latch feature 42 corresponds to the first hole wall 56a, so as to prevent the sliding device 26 from arbitrarily displacing relative to the first rail 22. For example, the latch feature 42 can be blocked by the first hole wall 56a (and the extension section 72), so as to prevent the sliding device 26 from displacing relative to the first rail 22 from the predetermined position K to a folding direction D2 (as shown in FIG. 6 ). When the sliding aid 26 is in the predetermined position K and the latching feature 42 is latched to the predetermined feature 52 of the elastic portion 50 of the retaining member 28 , the latching feature 42 and the limiting feature 54 are laterally (or laterally) offset from each other and do not interfere with each other.

As shown in Fig. 8, the slide-assisting device 26 is in the predetermined position K, and the elastic portion 50 of the retaining member 28 is in the first state S1 (e.g., locked state), which can be used to lock the latching feature 42 of the slide-assisting device 26. When the second rail 24 is reinserted into the channel 32 of the first rail 22 from outside the channel 32 of the first rail 22 in the folding direction D2, the first wall 38a and the second wall 38b of the second rail 24 can be pre-supported by the balls 48 of the first portion 44a and the balls 48 of the second portion 44b of the slide-assisting device 26, respectively, which helps to ensure stability or smoothness when the second rail 24 is inserted into the channel 32 of the first rail 22 in the folding direction D2.

As shown in FIGS. 9 , 10 and 11 , when the second rail 24 continues to be inserted into the channel 32 of the first rail 22 in the folding direction D2, the second rail 24 can drive the elastic portion 50 of the retaining member 28 through the release feature 37, so that the latching feature 42 of the sliding aid device 26 is released from the predetermined feature 52 of the elastic portion 50 of the retaining member 28, so as to allow the sliding aid device 26 to move from the predetermined position K to the folding direction D2.

Specifically, when the second rail 24 continues to be inserted into the channel 32 of the first rail 22 in the folding direction D2, the release feature 37 (the second guide structure 39b) of the second rail 24 will contact the elastic portion 50 (the second guide feature 66) of the retaining member 28 to generate another force, causing the elastic portion 50 of the retaining member 28 to move from the first state S1 (e.g., the locked state, as shown in FIG. 9 ) to the second state S2 (e.g., the unlocked state, as shown in FIG. 10 ), so that the latching feature 42 of the sliding aid 26 is released from the predetermined feature 52 of the elastic portion 50 of the retaining member 28. At this time, the elastic portion 50 accumulates an elastic force. When the second rail 24 is further displaced in the folding direction D2 relative to the first rail 22, the sliding aid 26 can move from the predetermined position K to the folding direction D2 in response to the displacement of the second rail 24, and the elastic portion 50 releases the elastic force to restore from the second state S2 (as shown in FIG. 10 ) to the first state S1 (as shown in FIG. 11 ).

It is worth mentioning that, as shown in Fig. 9, the size of the predetermined feature 52 is substantially larger than the size of the latch feature 42. Specifically, the longitudinal dimension of the predetermined feature 52 (e.g., hole) is substantially larger (or slightly larger) than the longitudinal dimension of the latch feature 42 (e.g., hook), so that the predetermined feature 52 has a predetermined looseness when accommodating the latch feature 42. According to this configuration, when the second rail 24 is inserted into the channel 32 of the first rail 22 in the folding direction D2, and the second rail 24 drives the elastic portion 50 of the retaining member 28 to move from the first state S1 to the second state S2 through the release feature 37 (the second guide structure 39b), due to the predetermined looseness, the latching feature 42 of the sliding aid 26 can be easily disengaged from the predetermined feature 52 of the elastic portion 50 of the retaining member 28, thereby avoiding the problem that the latching feature 42 and the predetermined feature 52 are too tightly engaged with each other and difficult to disengage from each other, or the latching feature 42 and the second end section 62 of the elastic portion 50 may be deformed or damaged when they are disengaged from each other due to excessive engagement.

According to the above description, it can be seen that the slide rail assembly 20 of the embodiment of the present invention includes the following features:

a. The limiting feature 54 on the first rail 22 can prevent the elastic portion 50 from being deformed due to force, which helps to improve the reliability of the slide rail assembly 20 in use.

b. The size of the predetermined feature 52 is substantially larger than the size of the latch feature 42 .

c. The main body 58, the elastic portion 50 and the support section 68 can be integrated into one body, so that the retaining member 28 becomes a single component.

Although the present invention has been described with reference to the current specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and various equivalent changes and modifications may be made without departing from the spirit of the present invention. Therefore, any changes and modifications to the above embodiments within the spirit of the present invention will fall within the scope of the claims of this application.

Claims (20)

1. A sliding rail assembly comprises a first rail, a second rail, a sliding assisting device and a retaining piece, wherein the first rail comprises a channel, the second rail is movably arranged in the channel of the first rail, and the second rail can longitudinally displace relative to the first rail; the method is characterized in that:

the sliding assisting device is movably arranged between the first rail and the second rail and comprises a clamping feature; and

Said holder being arranged on the first rail, the holder comprising an elastic portion;

Wherein the elastic portion of the retainer comprises a predetermined feature, the first rail comprises a limiting feature, and the limiting feature is used for preventing the elastic portion from moving in a transverse direction;

when the second rail is displaced towards an opening direction relative to the first rail and is detached from the channel of the first rail, the sliding assisting device is positioned at a preset position, and the sliding assisting device can be clamped to the preset feature of the elastic part of the retainer through the clamping feature.

2. The slide assembly of claim 1 wherein one of the predetermined feature and the limiting feature is a space and the other of the predetermined feature and the limiting feature is a protrusion; the convex part is used for extending into the space.

3. The slide assembly of claim 2 wherein the space is a bore and the bore is defined by a plurality of bore walls.

4. The slide rail assembly of claim 1 wherein the first rail comprises a first wall, a second wall, and a longitudinal wall, the longitudinal wall being connected between the first wall and the second wall of the first rail, the first wall, the second wall, and the longitudinal wall of the first rail together defining the channel; the holder further comprises a body portion connected to the longitudinal wall of the first rail, the resilient portion having a first end section and a second end section, the first end section of the resilient portion being connected to the body portion, and the predetermined feature being arranged at the second end section of the resilient portion.

5. The slide assembly of claim 4, wherein the second end section of the resilient portion includes a first guide feature and a second guide feature; the predetermined feature is arranged between the first guide feature and the second guide feature.

6. The slide assembly of claim 4 wherein the body portion of the retainer has a support section for supporting the resilient portion.

7. The slide assembly of claim 1 wherein the predetermined feature has a size substantially greater than the size of the detent feature.

8. The slide assembly of claim 1 wherein the second rail includes a release feature; when the second rail is reinserted into the channel of the first rail from the outside of the channel of the first rail to a folding direction, the second rail can drive the elastic part of the retainer through the release feature, so that the clamping feature of the sliding assisting device is released from the preset feature of the elastic part of the retainer to allow the sliding assisting device to move from the preset position to the folding direction.

9. The slide rail assembly of claim 4 wherein the slide assist device further comprises a first portion, a second portion, and a longitudinal portion, the longitudinal portion being connected between the first portion and the second portion, the first portion, the second portion, and the longitudinal portion respectively corresponding to the first wall, the second wall, and the longitudinal wall of the first rail; the first and second parts of the sliding aid are provided with a plurality of balls for supporting the first and second walls of the first rail respectively.

10. The slide assembly of claim 1 wherein the detent feature of the slide assist device is a detent.

11. The first rail comprises a first wall, a second wall and a longitudinal wall, the longitudinal wall is connected between the first wall and the second wall of the first rail, the first wall, the second wall and the longitudinal wall of the first rail jointly define a channel, the second rail is movably arranged in the channel of the first rail, and the second rail can longitudinally displace relative to the first rail; the method is characterized in that:

the sliding assisting device is movably arranged between the first rail and the second rail and comprises a clamping feature; and

Said retaining member being arranged on a longitudinal wall of the first rail, the retaining member comprising an elastic portion;

the elastic part of the retainer comprises a space, the longitudinal wall of the first rail comprises a convex part, and the convex part is used for extending into the space;

when the second rail is displaced towards an opening direction relative to the first rail and is detached from the channel of the first rail, the sliding assisting device stretches into the space of the elastic part of the retainer through the clamping feature so as to prevent the sliding assisting device from being displaced randomly relative to the first rail.

12. The slide assembly of claim 11 wherein the space is a bore and the bore is defined by a plurality of bore walls.

13. The slide rail assembly of claim 11 wherein the retainer further comprises a body portion coupled to the longitudinal wall of the first rail, the resilient portion having a first end section and a second end section, the first end section of the resilient portion being coupled to the body portion and the space being disposed at the second end section of the resilient portion.

14. The slide assembly of claim 13, wherein the second end section of the resilient portion includes a first guide feature and a second guide feature; the space is arranged between the first guide feature and the second guide feature.

15. The slide assembly of claim 13 wherein the body portion of the retainer has a support section for supporting the resilient portion.

16. The slide assembly of claim 11 wherein the space has a dimension substantially greater than the dimension of the detent feature.

17. The slide assembly of claim 12 wherein the second rail includes a release feature; when the second rail is reinserted into the channel of the first rail from the outside of the channel of the first rail to a folding direction, the second rail can drive the elastic part of the retainer through the release feature, so that the clamping feature of the sliding assisting device is released from the space of the elastic part of the retainer to allow the sliding assisting device to move from a preset position to the folding direction.

18. The slide rail assembly of claim 13 wherein the slide assist device further comprises a first portion, a second portion, and a longitudinal portion, the longitudinal portion being connected between the first portion and the second portion, the first portion, the second portion, and the longitudinal portion corresponding to the first wall, the second wall, and the longitudinal wall of the first rail, respectively; the first and second parts of the sliding aid are provided with a plurality of balls for supporting the first and second walls of the first rail respectively.

19. The slide assembly of claim 11 wherein the detent feature of the slide assist device is a detent.

20. The slide assembly of claim 11, wherein the resilient portion of the retaining member is arranged with an extension adjacent the space, and the detent feature corresponds to the extension when the sliding assist device is extended into the space of the resilient portion of the retaining member through the detent feature.