CN111248668B

CN111248668B - Sliding rail assembly

Info

Publication number: CN111248668B
Application number: CN201811463321.XA
Authority: CN
Inventors: 陈庚金; 杨顺和; 翁宗宪; 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: 2018-12-03
Filing date: 2018-12-03
Publication date: 2021-11-19
Anticipated expiration: 2038-12-03
Also published as: CN111248668A

Abstract

The invention relates to a slide rail assembly, which comprises a first rail, a second rail, a mounting member, a third rail, a fourth rail and a synchronous piece. The first rail includes a trip feature; the third rail and the fourth rail are arranged on two sides of the mounting member, and the synchronous piece is arranged on the mounting member; the third rail can move relative to the first rail, and the second rail can move relative to the fourth rail; when the second rail moves from a retracted position to a direction, the second rail can synchronously move with the mounting member through the synchronizing member. When the mounting member moves to a predetermined position, the synchronous member is driven by the releasing feature of the first rail to release the synchronous displacement relationship between the mounting member and the second rail.

Description

Sliding rail assembly

Technical Field

The present invention relates to a slide rail, and more particularly to a slide rail assembly having two or more sections of slide rails.

Background

Generally, a plurality of sets of slide assemblies are arranged on the left and right sides of a rack or a cabinet with a predetermined height from top to bottom, and a movable rail of each slide assembly is generally used for carrying a load (such as an electronic device) or a drawer, so that the load or the drawer can be pulled out from the rack or the cabinet to open or pushed in from the outside of the rack or the cabinet to close.

However, due to the space requirement between the slide rail assembly and the rack (or cabinet) to which it is mounted, it is sometimes necessary to develop a product different from the existing two-or three-section slide rail assembly to meet this specific requirement.

Disclosure of Invention

The invention aims to provide a slide rail assembly which can enable a plurality of slide rails to be mutually assembled through an installation component so as to form two or more sections.

According to an aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a mounting member, a third rail, a fourth rail, and a synchronization member. The first rail includes a trip feature; the second rail is arranged with a pushing feature; the third rail and the fourth rail are respectively connected to a first side and a second side of the mounting member; the synchronizing member is arranged at the mounting member; wherein the third rail is longitudinally displaceable relative to the first rail, and the second rail is longitudinally displaceable relative to the fourth rail; when the second rail moves from a closed position to an open position, the second rail is abutted against the synchronous piece through the abutting characteristic, so that the mounting member and the second rail can synchronously move until the second rail moves to a stroke, and the synchronous piece is driven to be separated from the abutting characteristic through the tripping characteristic of the first rail so as to release the synchronous displacement relation between the mounting member and the second rail.

Preferably, the synchronizing member is pivotally connected to the mounting member by a shaft member, and the synchronizing member has a first contact portion and a second contact portion, the first contact portion is configured to mate with the abutting feature of the second rail, and the second contact portion is configured to mate with the releasing feature of the first rail.

Preferably, the mounting member has a first opening facing the first rail, and the second contact portion of the synchronization member passes through the first opening.

Preferably, the slide assembly further comprises a first elastic member for providing an elastic force to the synchronous member.

Preferably, the first rail further comprises a detent feature, and the slide rail assembly further comprises a positioning member capable of being located at an unlocking position and a detent position relative to the mounting member, and when the synchronous displacement relationship between the mounting member and the second rail is released, the mounting member can be moved from the unlocking position to the detent position by the positioning member to be engaged with the detent feature of the first rail.

Preferably, the positioning element is movably mounted on the mounting member, the mounting member has a second opening facing the first rail, and the positioning element partially passes through the second opening and can be engaged with the engaging feature of the first rail.

Preferably, the slide rail assembly further comprises a second elastic member for providing an elastic force to the positioning member.

Preferably, the second rail and the first rail are disposed in a vertical parallel relationship.

Preferably, the mounting member includes a first portion and a second portion, the fourth rail is fixedly connected to the first portion, and the third rail is fixedly connected to the second portion.

Preferably, the mounting member further comprises a third portion, and the first portion and the second portion are substantially perpendicular to the third portion and extend in different directions.

Preferably, the first and second sides of the mounting member are opposite sides.

Preferably, the first rail includes a first wall, a second wall and a side wall connected between the first wall and the second wall of the first rail, the first wall, the second wall and the side wall of the first rail define a first channel, and the third rail can move relative to the first rail through the first channel.

Preferably, the third rail includes a first wall, a second wall and a side wall connected between the first wall and the second wall of the third rail, the side wall of the third rail is connected to the second portion of the mounting member, and the first wall and the second wall of the third rail are located in the first channel.

Preferably, the slide rail assembly further comprises a first sliding aid movably mounted between the first rail and the third rail, the first sliding aid comprising a plurality of sliding aids for supporting between the first wall of the first rail and the third rail and for supporting between the second wall of the first rail and the third rail.

Preferably, the first wall of the first rail has a first section and a second section bent relative to the first section, and the second wall of the first rail has a third section and a fourth section bent relative to the third section.

Preferably, the fourth rail includes a first wall, a second wall and a side wall connected between the first wall and the second wall of the fourth rail, the side wall of the fourth rail is connected to the first portion of the mounting member, the first wall, the second wall and the side wall of the fourth rail define a second channel, and the second rail is displaceable relative to the fourth rail through the second channel.

Preferably, the second rail comprises a first wall, a second wall and a side wall connected between the first wall and the second wall of the second rail, and the first wall and the second wall of the second rail are located in the second channel.

Preferably, the slide rail assembly further comprises a second sliding aid movably installed between the fourth rail and the second rail, the second sliding aid comprising a plurality of sliding aids for being supported between the second rail and the first wall of the fourth rail and for being supported between the second rail and the second wall of the fourth rail.

Preferably, a front portion adjacent to the fourth rail includes a blocking seat, and a first blocking member and a second blocking member are movably mounted to the second rail, when the second rail moves to an opening position in the opening direction relative to the fourth rail, the first blocking member and the second blocking member are respectively located at two sides of a blocking portion of the blocking seat at a blocking position and are blocked by the blocking portion, so as to prevent the second rail from moving in the opening direction or moving in a retracting direction.

Preferably, when the first stopper is not in the blocking position, the second rail can move from the opening position to the retracting direction until the second rail moves to a predetermined retracting position, and the second rail drives the positioning element to leave the locking position, so that the positioning element is not locked to the locking feature of the first rail.

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 perspective view illustrating a slide rail assembly according to an embodiment of the invention.

Fig. 2 is a schematic cross-sectional view of a slide rail assembly according to an embodiment of the invention.

Fig. 3 is an exploded view of the slide rail assembly according to the embodiment of the invention.

Fig. 4 is an enlarged view of the region a of fig. 3.

Fig. 5 is a schematic view illustrating a slide rail assembly in a retracted state according to an embodiment of the present invention.

Fig. 6 is an enlarged view of the region a of fig. 5.

Fig. 7 is a schematic view illustrating the second rail and the mounting member of the slide rail assembly of the embodiment of the invention being displaced in the opening direction relative to the first rail.

Fig. 8 is an enlarged view of the region a of fig. 7.

Fig. 9 is a schematic view illustrating the mounting member of the slide rail assembly of the embodiment of the invention in an extended position relative to the first rail and the second rail being displaced in the opening direction relative to the mounting member.

Fig. 10 is a schematic view illustrating the mounting member of the slide rail assembly of the embodiment of the invention in an extended position relative to the first rail and the second rail continuing to move relative to the mounting member in the opening direction.

Fig. 11 is an enlarged view of the region a of fig. 10.

Fig. 12 is a schematic view illustrating the mounting member of the slide rail assembly of the embodiment of the invention in an extended position relative to the first rail, and the second rail is further displaced in the opening direction relative to the mounting member.

Fig. 13 is an enlarged view of the region a of fig. 12.

Fig. 14 is a schematic view of a mounting member of a slide rail assembly according to an embodiment of the invention in an extended position relative to a first rail and a second rail in an open position relative to the mounting member.

Fig. 15 is a schematic view illustrating the second rail of the slide rail assembly according to the embodiment of the invention moving toward the retracting direction relative to the mounting member.

Fig. 16 is a schematic view illustrating that the second rail of the slide rail assembly moves relative to the mounting member in the retracting direction according to the embodiment of the invention.

Fig. 17 is a schematic view illustrating a slide rail assembly according to an embodiment of the invention applied to a rack.

Detailed Description

As shown in fig. 1 and 2, the slide rail assembly 20 of the embodiment of the invention includes a first rail 22, a second rail 24, a third rail 26, a fourth rail 28 and a mounting member 30.

Preferably, the second rail 24 and the first rail 22 are disposed in a vertically parallel relationship such that the positions of the second rail 24 and the first rail 22 have a difference in height. Preferably, the mounting member 30 includes a first portion 30a and a second portion 30b, and the fourth rail 28 and the third rail 26 are connected to the first portion 30a and the second portion 30b of the mounting member 30, respectively. The third rail 26 is displaceable relative to the first rail 22, and the second rail 24 is displaceable relative to the fourth rail 28. Preferably, the mounting member 30 further comprises a third portion 30c, and the first portion 30a and the second portion 30b are substantially perpendicularly connected to the third portion 30c to extend in different directions, for example, the first portion 30a extends upward for a predetermined length and the second portion 30b extends downward for a predetermined length, so that the first portion 30a and the second portion 30b are disposed in an upper-lower relationship.

Preferably, the first rail 22 includes a first wall 32a, a second wall 32b and a side wall 34 connected between the first wall 32a and the second wall 32b of the first rail 22, the first wall 32a, the second wall 32b and the side wall 34 of the first rail 22 defining a first channel 36.

The third rail 26 is connected to the second portion 30b of the mounting member 30 at a first side L1 of the mounting member 30. The third rail 26 is displaceable relative to the first rail 22 via the first channel 36. The third rail 26 includes a first wall 38a, a second wall 38b and a side wall 40 connected between the first wall 38a and the second wall 38b of the third rail 26, the side wall 40 of the third rail 26 is fixedly connected to the second portion 30b of the mounting member 30, and the first wall 38a and the second wall 38b of the third rail 26 are located in the first channel 36 of the first rail 22. Preferably, the slide rail assembly 20 further includes a first sliding aid 42 movably mounted between the first rail 22 and the third rail 26. The first sliding aid 42 includes a plurality of sliding aids, such as a first sliding aid 42a and a second sliding aid 42b, and the first sliding aid 42a and the second sliding aid 42b are balls or rollers and the like. The first antislip 42a is configured to be supported between the first wall 32a of the first rail 22 and the first wall 38a of the third rail 26, and the second antislip 42b is configured to be supported between the second wall 32b of the first rail 22 and the second wall 38b of the third rail 26. Preferably, the first wall 32a of the first rail 22 has a first section S1 and a second section S2 bent with respect to the first section S1, and the second wall 32b of the first rail 22 has a third section S3 and a fourth section S4 bent with respect to the third section S3. According to this configuration, it is possible to increase the structural strength or the supporting strength of the first rail 22.

The fourth rail 28 is connected to the first portion 30a of the mounting member 30 at a second side L2 of the mounting member 30, the first side L1 being opposite the second side L2. The fourth rail 28 includes a first wall 44a, a second wall 44b and a side wall 46 connected between the first wall 44a and the second wall 44b of the fourth rail 28. The side wall 46 of the fourth rail 28 is fixedly connected to the first portion 30a of the mounting member 30, and the first wall 44a, the second wall 44b and the side wall 46 of the fourth rail 28 define a second channel 48. The second rail 24 is displaceable relative to the fourth rail 28 via the second channel 48.

The second rail 24 includes a first wall 50a, a second wall 50b, and a side wall 52 connected between the first wall 50a and the second wall 50b of the second rail 24, and the first wall 50a and the second wall 50b of the second rail 24 are located within the second channel 48 of the second rail 24. Preferably, the slide rail assembly 20 further includes a second sliding aid 54 movably mounted between the fourth rail 28 and the second rail 24. The second sliding aid 54 includes a plurality of sliding aids, such as a first sliding aid 54a and a second sliding aid 54b, and the first sliding aid 54a and the second sliding aid 54b are balls or rollers and the like. The first antislip 54a is configured to be supported between the first wall 50a of the second rail 24 and the first wall 44a of the fourth rail 28, and the second antislip 54b is configured to be supported between the second wall 50b of the second rail 24 and the second wall 44b of the fourth rail 28.

As shown in fig. 3 to 5, the third rail 26 and the fourth rail 28 are respectively fixedly connected to the second portion 30b and the first portion 30a of the mounting member 30 and located at different sides of the mounting member 30, and the mounting member 30, the third rail 26 and the fourth rail 28 can be regarded as a whole. The third rail 26 and the first rail 22 can be mounted to each other through the first channel 36, and the third rail 26 can be longitudinally displaced relative to the first rail 22. On the other hand, the second rail 24 and the fourth rail 28 can be mounted to each other through the second channel 48, and the second rail 24 can be longitudinally displaced relative to the fourth rail 28.

Further, the first rail 22 has a front portion 22a and a rear portion 22 b. The first rail 22 includes a detent release feature 56 and a detent feature 58 (see also fig. 4). Preferably, the detent feature 56 is located on the first wall 32a of the first rail 22, and the detent feature 56 is illustrated as a protrusion, but is not limited in implementation. Preferably, the detent feature 58 is located on the first wall 32a of the first rail 22 at a distance from the release feature 56, and the detent feature 58 is exemplified herein by two corresponding walls defining a space (e.g., a slot or a recess).

The second rail 24 is arranged with an abutment feature 59. The push-against feature 59 is, for example, a protrusion, but is not limited in implementation. The abutment feature 59 can be integrated into the second rail 24, or the abutment feature 59 can be an additional member fixedly connected to the second rail 24. Preferably, the second rail 24 is arranged with a working portion 57, the working portion 57 is a bump, for example, and the working portion 57 includes a pressing section 57a and a guiding section 57b extending from the pressing section 57 a. The guiding section 57b is, for example, a slope or a cambered surface.

The slide assembly 20 includes a synchronization member 60 and preferably a positioning member 62. The synchronizing member 60 and the positioning member 62 are arranged at the mounting member 30. For example, the synchronizing member 60 and the positioning member 62 are arranged on a second side of the first portion 30a of the mounting member 30. Preferably, the side wall 46 of the fourth rail 28 includes a first corresponding through hole 64 and a second corresponding through hole 66, and the positions of the first corresponding through hole 64 and the second corresponding through hole 66 correspond to the positioning element 62 and the synchronizing element 60, respectively. Preferably, the mounting member 30 has a first opening 68 and a second opening 70 facing the first rail 22, such as facing the first wall 32a of the first rail 22. And the positions of the first opening 68 and the second opening 70 correspond to the position of the synchronous component 60 and the position of the positioning component 62, respectively.

The synchronizer 60 is pivotally connected to the mounting member 30 by a shaft 72, and the synchronizer 60 has a first contact portion 60a and a second contact portion 60 b. The first contact portion 60a is configured to mate with the push-against feature 59 of the second rail 24, and the second contact portion 60b passes through the first opening 68 to mate with the release feature 56 of the first wall 32a of the first rail 22. Preferably, the slide assembly 20 further includes a first elastic member 74 for providing elastic force to the synchronous member 60.

The positioning member 62 is movably mounted to the mounting member 30. For example, one of the positioning member 62 and the mounting member 30 has a first guide feature 76 and the other of the positioning member 62 and the mounting member 30 has a second guide feature 78. The first guide feature 76 and the second guide feature 78 are mating combinations of a protrusion and a slot (or slot), wherein the protrusion extends through a portion of the slot. Preferably, the positioning member 62 can mate with the detent feature 58 of the first wall 32a of the first rail 22 through the second opening 70. Preferably, the slide assembly 20 further includes a second elastic member 80 for providing elastic force to the positioning member 62.

The second rail 24 has a front portion 24a and a rear portion 24 b. On the other hand, the fourth rail 28 has a front portion 28a and a rear portion 28 b. Preferably, the front portion 28a adjacent the fourth rail 28 includes a stop 82, and a first stop 84 and a second stop 86 are movably mounted, such as pivotally connected, to the second rail 24. Preferably, an elastic seat 88 having a first elastic portion 88a and a second elastic portion 88b provides elastic force to the first stopper 84 and the second stopper 86, respectively, so that the first stopper 84 and the second stopper 86 are kept in a predetermined state. Preferably, an operating member 90 is further included for the user to operate the first stopper 84 to be no longer in the predetermined state.

As shown in fig. 5, the slide assembly 20 is in a retracted state. Preferably, at least one blocking structure 92 is disposed adjacent to the rear portion 22b of the first rail 22, and the at least one blocking structure 92 is, for example, a bump, but is not limited in implementation. The at least one blocking structure 92 is configured to block at least one corresponding structure 94 at the rear of the mounting member 30 to prevent the mounting member 30 from being displaced rearward relative to the first rail 22. Further, the second rail 24 can abut against the first contact portion 60a of the synchronizing member 60 through the abutting feature 59 (see fig. 6 for a part). Preferably, when in a retracted position R, the abutting section 57a of the working portion 57 of the second rail 24 can provide the positioning element 62 to abut against, so that the positioning element 62 is in an unlatching position X1, and the second elastic element 80 accumulates an elastic force. In addition, when the second rail 24 is located at the retracted position R relative to the fourth rail 28, the first stopper 84 (or the second stopper 86) is spaced apart from the stopper 82. The first stopper 84 and the second stopper 86 are both in the predetermined state, such as a stopping position Y1.

As shown in fig. 5 to 8, when the second rail 24 is displaced from the retracted position R to a forward direction, such as an opening direction D1, the second rail 24 abuts against the first contact portion 60a of the synchronization member 60 through the abutting feature 59 (as shown in fig. 5 or fig. 6), so that the mounting member 30 can be displaced synchronously with the second rail 24 until the second rail is displaced to a stroke, and the releasing feature 56 of the first rail 22 contacts the second contact portion 60b of the synchronization member 60 to generate a force to drive the synchronization member 60 to deflect at an angle, so that the first contact portion 60a of the synchronization member 60 can be disengaged from the abutting feature 59 (as shown in fig. 7 or fig. 8) to release the synchronous displacement relationship between the mounting member 30 and the second rail 24. Wherein, when the synchronous member 60 swings at the angle, the first elastic member 74 accumulates an elastic force. On the other hand, the positioning member 62 is in the unlatched position X1 without yet catching the catching feature 58 of the first rail 22 (as shown in fig. 7).

As shown in fig. 9, when the mounting member 30 and the second rail 24 are released from the synchronous displacement relationship, the mounting member 30 can be engaged with the engaging feature 58 of the first rail 22 by displacing the positioning member 62 from the disengaging position X1 to an engaging position X2, so that the mounting member 30 (and the third rail 26 and the fourth rail 28) can be maintained at an extended position P1 relative to the first rail 22, and at this time, the front portion of the mounting member 30 exceeds the front portion 22a of the first rail 22. Specifically, when the second rail 24 is displaced relative to the mounting member 30 in the opening direction D1, the abutting section 57a of the working portion 57 of the second rail 24 no longer provides the positioning element 62 for abutting, so that the positioning element 62 is displaced from the release position X1 to the engagement position X2 in response to the second elastic element 80 releasing the elastic force, and can engage with the engagement feature 58 of the first rail 22.

As shown in fig. 10 and 11, the mounting member 30 (and the third and fourth rails 26, 28) is in the extended position P1. In this state, during the displacement of the second rail 24 relative to the fourth rail 28 in the opening direction D1, the first stopper 84 contacts a stopping portion 82a of the stopping seat 82 of the fourth rail 28 (as shown in fig. 11).

As shown in fig. 12 and 13, when the second rail 24 continues to displace in the opening direction D1 relative to the fourth rail 28, the first stopper 84 and the stopper 82a of the stopper 82 generate a force, so that the first stopper 84 can swing at an angle from the blocking position Y1 to an unblocking position Y2 to pass over the stopper 82a of the stopper 82, and at this time, the first elastic portion 88a of the elastic seat 88 accumulates an elastic force (as shown in fig. 13).

As shown in fig. 14, when the second rail 24 is further displaced to an opening position P2 in the opening direction D1 relative to the fourth rail 28, the first stopper 84 has passed over the stopping portion 82a of the stopping seat 82, and the first stopper 84 can recover the stopping position Y1 in response to the first elastic portion 88a of the elastic seat 88 releasing the elastic force. At this time, the first stopper 84 and the second stopper 86 are located at the blocking position Y1 and located at two sides of the blocking portion 82a of the blocking seat respectively to be blocked by the blocking portion 82a, so as to prevent the second rail 24 from moving toward the opening direction D1 or moving toward a retracting direction with respect to the fourth rail 28. At this time, the slide rail assembly 20 is in a fully extended state. Preferably, the user can move the first stopper 84 from the blocking position Y1 to the unblocking position Y2 (refer to fig. 13) by the operating member 90, so that the second rail 24 can be displaced from the opening position P2 to the retracted position with respect to the fourth rail 28.

As shown in fig. 15 and 16, when the second rail 24 is displaced to a predetermined retracted position in the retracting direction D2 relative to the fourth rail 28, the second rail 24 can drive the positioning element through the guiding section 57b of the working portion 57, so that the positioning element 62 returns to the releasing position X1 from the locking position X2 and is no longer locked to the locking feature 58 of the first rail 22. Accordingly, the second rail 24 and the mounting member 30 can be displaced in the retracting direction D2 until the slide assembly 20 returns to the retracted position. It should be noted that when the second rail 24 returns to the retracted position R, the synchronous member 60 returns to an initial state (as shown in fig. 5) in response to the first elastic member 74 releasing the elastic force.

As shown in fig. 17, the slide rail assembly 20 can be applied to a rack (rack). For example, the front portion 22a and the rear portion 22b of the first rail 22 described above may be mounted to a first mast 98a and a second mast 98b, respectively, of the rack by a bracket arrangement 96 (the bracket arrangement 84 of the rear portion 22b of the first rail 22 is not shown due to the perspective). The second rail 24 has a plurality of mounting features 100 for mounting an object (e.g., an electronic device) or a drawer.

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

a. the slide assembly 20 includes a first rail 22, a second rail 24, a third rail 26, a fourth rail 28, and mounting members 30. Wherein, the mounting member 30 and the third rail 26 are respectively connected (e.g. fixedly connected) to the mounting member 30. The mounting member 30, the third rail 26 and the fourth rail 28 can be seen as one piece. The third rail 26 is longitudinally displaceable relative to the first rail 22, and the second rail 24 is longitudinally displaceable relative to the fourth rail 28.

b. When the second rail 24 is displaced from the retracted position R to the opening direction D1, the second rail 24 and the mounting member 30 can be synchronously displaced by the synchronizer 60 until the second rail 24 is displaced to a stroke, and the synchronizer 60 is driven by the releasing feature 56 of the first rail 22 to release the synchronous displacement relationship between the mounting member 30 and the second rail 24.

c. When the mounting member 30 is released from the synchronized displacement relationship with the second rail 24, the mounting member 30 can be engaged with the engaging feature 58 of the first rail 22 via the positioning member 62, such that the mounting member 30 (and the third and fourth rails 26, 28) can be maintained at the extended position P1 relative to the first rail 22. Wherein the second rail 24 can continue to be displaced relative to the mounting member 30 to an open position P2.

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 comprises a first rail and a second rail, and is characterized in that:

the first rail includes a trip feature;

the second rail is provided with a pushing and abutting characteristic;

a mounting member;

a third rail and a fourth rail respectively connected to a first side and a second side of the mounting member; and

a synchronizing member arranged at the mounting member;

wherein the third rail is longitudinally displaceable relative to the first rail, and the second rail is longitudinally displaceable relative to the fourth rail;

when the second rail moves from a closed position to an open position, the second rail is abutted against the synchronous piece through the abutting characteristic, so that the mounting member and the second rail can synchronously move until the second rail moves to a stroke, the synchronous piece is driven to be separated from the abutting characteristic through the tripping characteristic of the first rail, and the synchronous displacement relation between the mounting member and the second rail is released;

the first rail also comprises a clamping characteristic, the slide rail assembly also comprises a positioning piece which can be positioned at an unlocking position and a clamping position relative to the mounting component, and when the synchronous displacement relation between the mounting component and the second rail is released, the mounting component can move from the unlocking position to the clamping position through the positioning piece to be clamped with the clamping characteristic of the first rail;

the positioning piece is movably arranged on the mounting component, the mounting component is provided with a second opening facing the first rail, and the positioning piece partially penetrates through the second opening and can be clamped with the clamping characteristic of the first rail.

2. The slide rail assembly of claim 1 wherein the synchronization member is pivotally connected to the mounting member by a shaft, the synchronization member having a first contact portion and a second contact portion, the first contact portion configured to mate with the push feature of the second rail, the second contact portion configured to mate with the release feature of the first rail.

3. The slide rail assembly of claim 2 wherein the mounting member has a first opening facing the first rail and the second contact portion of the synchronization member passes through the first opening.

4. The slide rail assembly of claim 2 further comprising a first resilient member for providing a resilient force to the synchronizing member.

5. The slide rail assembly of claim 1 wherein the second rail is disposed in a vertically parallel relationship with the first rail.

6. The slide rail assembly of claim 1 wherein the mounting member includes a first portion and a second portion, the fourth rail being fixedly coupled to the first portion and the third rail being fixedly coupled to the second portion.

7. The slide rail assembly of claim 6 wherein the mounting member further comprises a third portion, and the first portion and the second portion are substantially perpendicular to the third portion and extend in different directions.

8. The slide rail assembly of claim 7 wherein the first and second sides of the mounting member are opposite sides.

9. The slide rail assembly of claim 7 wherein the first rail includes a first wall, a second wall and a side wall connected between the first wall and the second wall of the first rail, the first wall, the second wall and the side wall of the first rail defining a first channel, and the third rail being displaceable relative to the first rail through the first channel.

10. The slide rail assembly of claim 9 wherein the third rail includes a first wall, a second wall, and a side wall connected between the first wall and the second wall of the third rail, the side wall of the third rail connected to the second portion of the mounting member, and the first wall and the second wall of the third rail positioned within the first channel.

11. The slide assembly of claim 10 further comprising a first sliding aid movably mounted between the first rail and the third rail, the first sliding aid comprising a plurality of sliding aids supported between the first wall of the first rail and the third rail and between the second wall of the first rail and the third rail.

12. The slide rail assembly of claim 9 wherein the first wall of the first rail has a first section and a second section bent with respect to the first section, and the second wall of the first rail has a third section and a fourth section bent with respect to the third section.

13. The slide assembly of claim 11 wherein the fourth rail includes a first wall, a second wall, and a side wall connected between the first wall and the second wall of the fourth rail, the side wall of the fourth rail connected to the first portion of the mounting member, the first wall, the second wall, and the side wall of the fourth rail defining a second channel, and the second rail being displaceable relative to the fourth rail through the second channel.

14. The slide rail assembly of claim 13 wherein the second rail comprises a first wall, a second wall, and a side wall connected between the first wall and the second wall of the second rail, and the first wall and the second wall of the second rail are located within the second channel.

15. The slide assembly of claim 14 further comprising a second sliding aid movably mounted between the fourth rail and the second rail, the second sliding aid comprising a plurality of sliding aids supported between the second rail and the first wall of the fourth rail and between the second rail and the second wall of the fourth rail.

16. A slide rail assembly comprises a first rail and a second rail, and is characterized in that:

the first rail includes a trip feature;

the second rail is provided with a pushing and abutting characteristic;

a mounting member;

a synchronizing member arranged at the mounting member;

the slide rail assembly further comprises a second elastic piece for providing elastic force to the positioning piece.

17. A slide rail assembly comprises a first rail and a second rail, and is characterized in that:

the first rail includes a trip feature;

the second rail is provided with a pushing and abutting characteristic;

a mounting member;

a synchronizing member arranged at the mounting member;

when the second rail moves to an opening position relative to the fourth rail in the opening direction, the first blocking piece and the second blocking piece are respectively positioned at two sides of a blocking part of the blocking seat at a blocking position and are blocked by the blocking part so as to prevent the second rail from moving in the opening direction or moving in a folding direction.

18. The slide rail assembly of claim 17 wherein when the first stop member is not in the blocking position, the second rail can move from the open position to the retracted position until the second rail moves to a predetermined retracted position, the second rail will drive the positioning member away from the detent position, such that the positioning member is no longer detent to the detent feature of the first rail.