CN108851656B

CN108851656B - Sliding rail assembly

Info

Publication number: CN108851656B
Application number: CN201710338136.7A
Authority: CN
Inventors: 陈庚金; 杨顺和; 游凯文; 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: 2017-05-15
Filing date: 2017-05-15
Publication date: 2020-04-24
Anticipated expiration: 2037-05-15
Also published as: CN108851656A

Abstract

The invention relates to a slide rail assembly, comprising a first rail, a second rail and a third rail, wherein the second rail can move relative to the first rail, the third rail can move relative to the second rail, the slide rail assembly also comprises a first blocking characteristic and a second blocking characteristic which are respectively positioned on the first rail and the second rail; when the second rail moves to a first opening position relative to the first rail in a first direction, the second blocking feature is blocked by the first blocking feature so as to prevent the second rail from moving to the first direction from the first opening position; wherein, one of the first blocking feature and the second blocking feature can be operated to release the blocking relationship between the second blocking feature and the first blocking feature, so that the second rail can be displaced from the first opening position to the first direction to be detached from the first rail.

Description

Sliding rail assembly

Technical Field

The present invention relates to a slide rail assembly, and more particularly, to a slide rail assembly with two slide rails capable of being disassembled or assembled with respect to another slide rail.

Background

Generally, the sliding rail assembly generally includes a first rail, a second rail and a third rail. Wherein, the second rail is movably arranged between the first rail and the third rail. In the prior art, the third rail is used to support an object, and therefore, based on this consideration, only the third rail can be detached from the other two sliding rails (i.e., the second rail and the first rail) to facilitate the maintenance operation of the third rail or the object by the field personnel. However, according to this prior art, the specific needs of the market have not been met.

Disclosure of Invention

The present invention is directed to a slide rail assembly, in which two slide rails of the slide rail assembly can be detached or installed relative to another slide rail, so as to facilitate a user to perform a maintenance operation on the slide rails and/or an object.

According to an aspect of the present invention, a sliding rail assembly includes a first rail, a second rail and a third rail. The second rail can move relative to the first rail; the third rail can move relative to the second rail; wherein the second rail is movably mounted between the first rail and the third rail; wherein a first blocking feature and a second blocking feature are respectively located on the first rail and the second rail; when the second rail moves to a first opening position relative to the first rail in a first direction, the second blocking feature is blocked by the first blocking feature so as to prevent the second rail from moving to the first direction from the first opening position; wherein, one of the first blocking feature and the second blocking feature can be operated to release the blocking relationship between the second blocking feature and the first blocking feature, so that the second rail can be displaced from the first opening position to the first direction to be detached from the first rail.

Preferably, the slide assembly further comprises an operating member for operating the second blocking feature.

Preferably, the second rail includes a through opening facing the first rail, and the second blocking feature is located corresponding to the through opening.

Preferably, the first and second guide rails further comprise a third blocking feature and a fourth blocking feature respectively located on the second rail and the third rail, and when the third rail moves to a second open position relative to the second rail in the first direction, the third blocking feature is blocked by the fourth blocking feature to prevent the third rail from moving to the first direction from the second open position.

Preferably, one of the third blocking feature and the fourth blocking feature is operable to release the blocking relationship between the third blocking feature and the fourth blocking feature, so that the third rail can be moved from the second open position to the first direction to be detached from the second rail.

Preferably, the fourth blocking feature is operatively connected to the third rail.

Preferably, the slide assembly further comprises a fifth blocking feature operatively connected to the third rail, the fourth blocking feature and the fifth blocking feature being located on opposite sides of the third blocking feature when the third rail is in the second open position relative to the second rail.

Preferably, the slide rail assembly further comprises a clamping member mounted on the second rail, and when the third rail moves from a retracted position to a first predetermined position relative to the second rail in the first direction, the clamping member is configured to clamp the third rail, so that the second rail and the third rail can synchronously move in the first direction relative to the first rail.

Preferably, the first rail includes a release feature, and when the second rail and the third rail move synchronously to a second predetermined position in the first direction relative to the first rail, the release feature is used to release the locking member from the third rail, so that the third rail can move in the first direction relative to the second rail.

Preferably, the locking member is pivotally connected to the second rail, the slide rail assembly further includes an elastic member for providing an elastic force to the locking member, the third rail includes a first wall, a second wall and a side wall connected between the first wall and the second wall, and when the third rail is at the retracted position relative to the second rail, the locking member is pressed against the first wall by the elastic force of the elastic member and can be maintained in a first state.

Preferably, the third rail includes an opening and a rail wall adjacent to the opening, the locking member includes a locking portion, when the third rail is at the first predetermined position relative to the second rail, the locking member can pivot from the first state to a second state relative to the second rail in response to the elastic force of the elastic member, so that the locking portion enters the opening, and the locking portion is located corresponding to the rail wall.

Preferably, the second rail includes a through opening facing the first rail, the locking member includes an extending portion passing through the through opening, the release feature includes a first guiding portion, and when the second rail and the third rail move synchronously in the first direction to the second predetermined position, the locking member is guided by the first guiding portion through the extending portion, so that the locking member can be released from the third rail.

Preferably, the release feature further comprises a blocking portion, and when the second rail moves to a third predetermined position from the first open position to a second direction opposite to the first direction relative to the first rail, the extending portion of the engaging member can be blocked by the blocking portion to prevent the second rail from moving to the second direction relative to the first rail.

Preferably, the releasing feature further comprises a second guiding portion, and when the second rail moves from the first opening position to the second direction to the third predetermined position relative to the first rail, the engaging member is guided by the second guiding portion through the extending portion.

Preferably, when the third rail moves in the second direction relative to the second rail, the third rail drives the engaging member, so that the extending portion of the engaging member is no longer blocked by the blocking portion.

Preferably, the release feature further comprises a linear portion, and the blocking portion and the linear portion are located between the first guide portion and the second guide portion.

According to another aspect of the present invention, a sliding rail assembly for a first object and a second object comprises a first rail, a second rail and a third rail. The first rail is mounted to the first object; the third rail is used for bearing the second object; wherein the second rail is movably mounted between the first rail and the third rail; the second rail can be detached in a first direction relative to 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 present invention, which can be used for two objects.

Fig. 2 is an exploded view of a slide rail assembly according to an embodiment of the invention, including a first rail and a second rail, and the first rail is mountable to a first object.

Fig. 3 is a schematic view illustrating a slide rail assembly according to an embodiment of the invention being used for two objects.

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

Fig. 5 shows an exploded view of a slide rail assembly according to an embodiment of the invention including a third rail for mounting a second object.

Fig. 6 is a partial schematic view of a third rail of the slide rail assembly according to an embodiment of the invention, which can provide a mounting function for the second object.

Fig. 7 is a schematic view illustrating a slide rail assembly in a retracted state according to an embodiment of the present invention.

Fig. 8 is a schematic view illustrating that the second rail and the third rail of the slide rail assembly can synchronously move in a first direction relative to the first rail according to an embodiment of the invention.

Fig. 9 is a schematic view illustrating that the second rail and the third rail of the slide rail assembly synchronously move continuously in the first direction relative to the first rail according to the embodiment of the invention.

Fig. 10 is a schematic view illustrating that the synchronous displacement relationship between the second rail and the third rail of the slide rail assembly is released and the second rail and the third rail can be respectively displaced in the first direction relative to the first rail according to the embodiment of the invention.

Fig. 11 is a schematic view illustrating that the second rail of the slide rail assembly is located at a first open position relative to the first rail, and a second blocking feature is blocked by a first blocking feature according to an embodiment of the invention.

Fig. 12 is a perspective view illustrating that the second blocking feature of the slide rail assembly is blocked by the first blocking feature according to an embodiment of the invention.

Fig. 13 is a schematic view illustrating that the second rail of the slide rail assembly is in the first open position relative to the first rail, and the second blocking feature is not blocked by the first blocking feature according to the embodiment of the invention.

Fig. 14 is a perspective view illustrating that the second blocking feature of the slide rail assembly is not blocked by the first blocking feature according to an embodiment of the invention.

Fig. 15 is a schematic view illustrating the second rail and the third rail of the slide rail assembly of the embodiment of the invention detached from the first rail.

Fig. 16 is a schematic view illustrating that the third rail of the slide rail assembly is at a second open position relative to the second rail, and a fourth blocking feature is blocked by a third blocking feature according to an embodiment of the invention.

Fig. 17 is a schematic view illustrating that the third rail of the slide rail assembly is in the second open position relative to the second rail, and the fourth blocking feature is not blocked by the third blocking feature according to the embodiment of the invention.

Fig. 18 is a schematic view illustrating the third rail of the slide rail assembly detached from the second rail according to an embodiment of the present invention.

Fig. 19 is a schematic view illustrating the second rail and the third rail of the slide rail assembly being folded in a second direction relative to the first rail according to the embodiment of the invention.

Fig. 20 is a schematic view illustrating that the second rail and the third rail of the slide rail assembly of the embodiment of the invention are continuously folded toward the second direction relative to the first rail.

Fig. 21 is a schematic view illustrating that the second rail of the slide rail assembly according to the embodiment of the invention is further folded toward the second direction relative to the first rail.

Fig. 22 is a schematic view illustrating that the second rail of the slide rail assembly is blocked when the second rail is displaced to a position in the second direction relative to the first rail according to an embodiment of the invention.

Fig. 23 is a schematic view illustrating that the second rail of the slide rail assembly is blocked when moving to the position in the second direction relative to the first rail, and the blocking can be released through the third rail according to the embodiment of the invention.

Fig. 24 is a schematic view illustrating that the second rail and the third rail of the slide rail assembly can be folded relative to the first rail in the second direction according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1, a slide rail assembly 20 according to an embodiment of the present invention includes a first rail 22, a second rail 24, and a third rail 26. Wherein the second rail 24 is movably mounted between the first rail 22 and the third rail 26. In one application configuration, the first rail 22 is mountable to a first object 28; the third rail 26 is used for carrying a second object 30. Wherein the first object 28 may be a first chassis (or a first housing); on the other hand, the second object 30 may be a second cabinet (or a second housing). Alternatively, the first object 28 may be a cabinet, and the second object 30 may be a drawer, which is not limited in implementation. According to this arrangement, the second object 30 can be pulled out from the first object 28 to the outside of the first object 28 by the displacement of the third rail 26 relative to the first rail 22 and/or the second rail 24; alternatively, the second object 30 may be pushed into the first object 28 from outside the first object 28.

As shown in fig. 2 and 3, the first rail 22 can be fixed to the first object 28 by riveting, screwing, or clipping. Herein, the first rail 22 is fixed to the first object 28 through a plurality of connecting members 31 as an example. 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 32 b. The first wall 32a, the second wall 32b and the sidewall 34 of the first rail 22 together define a first channel 36. In addition, the first rail 22 has a front portion 37a and a rear portion 37 b. Further, the slide assembly 20 further includes a first blocking feature 38 and a release feature 40. Here, the first blocking feature 38 is located adjacent the front portion 37a of the first rail 22, and the release feature 40 is located adjacent the rear portion 37b of the first rail 22, for example. Specifically, the first blocking feature 38 can be an additional component fixed to the sidewall 34 of the first rail 22, or integrally formed to the sidewall 34 of the first rail 22, so that the first blocking feature 38 can be considered as a part of the first rail 22. Here, taking the first blocking feature 38 as a protrusion as an example; alternatively, the release feature 40 can be an additional component fixed to the sidewall 34 of the first rail 22, or integrally formed to the sidewall 34 of the first rail 22, so that the release feature 40 can be regarded as a part of the first rail 22, and the release feature 40 and the first blocking feature 38 have a distance from each other. Preferably, the release feature 40 includes a first guide portion 42, a linear portion 44, a stop portion 46, and a second guide portion 48. Preferably, the first guiding portion 42 and the second guiding portion 48 can be an inclined surface or an arc surface; on the other hand, the linear portion 44 and the blocking portion 46 are located between the first guide portion 42 and the second guide portion 48. Wherein, a height difference exists between the blocking portion 46 and the linear portion 44.

The second rail 24 is mounted to the first channel 36 of the first rail 22. Specifically, 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 50 b. The first wall 50a, the second wall 50b and the side wall 52 of the second rail 24 together define a second channel 54. In addition, the second rail 24 has a front portion 55a and a rear portion 55 b. Preferably, the second rail 24 includes a through opening 56 and a through opening 58 facing the first rail 22. Preferably, the slide assembly 20 further includes a second stop feature 60 and an operating member 62 (see also FIG. 4). Wherein the second blocking feature 60 can be an additional component disposed on the second rail 24, and the second blocking feature 60 can be operated to move. The second blocking feature 60 is positioned to correspond to the through opening 56. Specifically, the second blocking feature 60 includes a body portion 64, at least one extension leg 66, and an abutment portion 68. For example, the abutting portion 68 is located between the main body 64 and the at least one extending leg 66, and the at least one extending leg 66 is bent relative to the abutting portion 68. In another aspect, the operating member 62 is operatively connected to the second rail 24. Preferably, the operating member 62 is operable to operate the second blocking feature 60. For example, the operating member 62 is a spring, and the operating member 62 has a connecting portion 70 fixed to the side wall 52 of the second rail 24 and a resilient portion 72 connected to the connecting portion 70 of the operating member 62. The resilient portion 72 has a mounting opening 74 for receiving the extension leg 66 of the second blocking feature 60, and the resilient portion 72 of the operating member 62 can support the extension leg 66 of the second blocking feature 60. The slide assembly 20 further includes a detent 76 mounted to the second rail 24 and positioned adjacent the rear portion 55b of the second rail 24. For example, the latching member 76 is pivotally connected to the sidewall 52 of the second rail 24 via a shaft member 78, and an elastic member 79 is used to provide an elastic force to the latching member 76. The latching member 76 includes an extending portion 83 and a latching portion 81 adjacent to the extending portion 83, and the extending portion 83 passes through the through opening 58 of the second rail 24. Preferably, the slide rail assembly 20 further comprises at least one third blocking feature 85, for example, the at least one third blocking feature 85 can be a protrusion located on the sidewall 52 of the second rail 24 and adjacent to the front portion 55a of the second rail 24. Wherein the second blocking feature 60 is located between the at least one third blocking feature 85 and the detent element 76.

As shown in fig. 3 and 5, the third rail 26 is mounted to the second channel 54 of the second rail 24. Specifically, the third rail 26 includes a first wall 84a, a second wall 84b, and a side wall 86 connected between the first wall 84a and the second wall 84 b. In addition, the third rail 26 has a front portion 87a and a rear portion 87 b. The third rail 26 can provide for mounting of the second object 30. For example, the sidewall 86 of the third rail 26 includes a plurality of mounting holes 88 for mounting a plurality of mounting members 90 of the second object 30. Preferably, each of the mounting holes 88 is spaced apart from each other, and each of the mounting holes 88 includes a first hole portion 88a and a second hole portion 88b communicating with the first hole portion 88 a. The first hole portion 88a has a larger diameter than the second hole portion 88 b. On the other hand, each mounting member 90 of the second object 30 is mounted to each mounting hole 88. For example, each of the mounting members 90 can pass from the first aperture portion 88a to the second aperture portion 88 b. One of the mounting members 90 is preferably retained in the second bore portion 88b by a retaining member 92 (see also fig. 6). Specifically, the retainer 92 is operatively connected to the third rail 26. For example, the retaining member 92 is an elastic sheet, and the retaining member 92 has a connecting portion 94 fixed to the side wall 86 of the third rail 26, a resilient portion 96 connected to the connecting portion 94 of the retaining member 92, and an accommodating hole 98 located between the connecting portion 94 and the resilient portion 96 of the retaining member 92. The position of the elastic portion 96 corresponds to the first hole portion 88a, and the position of the receiving hole 98 corresponds to the second hole portion 88 b. Further, as shown in fig. 5, the slide assembly 20 further includes a fourth blocking feature 100 and a fifth blocking feature 102 located on the third rail 26. Preferably, the fourth and fifth stop features 100, 102 are operatively connected to the third rail 26. Here, the fourth blocking feature 100 and the fifth blocking feature 102 are both exemplified by a spring, and the fourth blocking feature 100 and the fifth blocking feature 102 are located adjacent to the rear portion 87b of the third rail 26. Specifically, the fourth blocking feature 100 has a connecting portion 104 fixed to the sidewall 86 of the third rail 26, and an elastic portion 106 connected to the connecting portion 104 of the fourth blocking feature 100, and the elastic portion 106 of the fourth blocking feature 100 has a first blocking section 107; on the other hand, the fifth blocking feature 102 has a connecting portion 108 fixed to the sidewall 86 of the third rail 26, and an elastic portion 110 connected to the connecting portion 108 of the fifth blocking feature 102, and the elastic portion 110 of the fifth blocking feature 102 has a second blocking section 111. Wherein the elastic portion 110 of the fifth blocking feature 102 and the elastic portion 106 of the fourth blocking feature 100 are mutually supported. Preferably, the third rail 26 further includes a receiving opening 113 corresponding to the elastic portion 110 of the fifth blocking feature 102 and the elastic portion 106 of the fourth blocking feature 100; preferably, the third rail 26 further comprises an opening 112 and at least one rail wall 114 around the opening 112, and the opening 112 is located adjacent to the second wall 84b of the third rail 26.

As shown in fig. 7, the extension 83 of the latch 76 passes through the through opening 58 of the second rail 24, and the elastic member 79 is located between the latch 76 and a supporting wall 116 of the second rail 24, so that the latch 76 can be maintained in a first state S1 relative to the second rail 24. Further, when the slide rail assembly 20 is in a retracted state, the second rail 24 is in a retracted position relative to the first rail 22. On the other hand, the third rail 26 is also in a retracted position R relative to the second rail 24. The detent 76 can be held in the first state S1 by abutting against one of the first wall 84a and the second wall 84b of the third rail 26, for example, abutting against the second wall 84b through the elastic member 79, and the elastic member 79 is in a state of accumulating an elastic force.

As shown in fig. 8, when the third rail 26 moves from the retracted position R to a first direction D1 (e.g., an opening direction) to a first predetermined position P1 relative to the second rail 24, the locking member 76 is configured to lock the third rail 26, so that the second rail 24 and the third rail 26 can move synchronously to the first direction D1 relative to the first rail 22. Specifically, when the third rail 26 is located at the first predetermined position P1 relative to the second rail 24, the detent 76 pivots from the first state S1 to a second state S2 in response to the elastic force released by the elastic member 79, such that the detent 81 of the detent 76 enters the opening 112 of the third rail 26, and the position of the detent 81 corresponds to the at least one rail wall 114.

As shown in fig. 9 and 10, when the detent member 76 is detent-engaged with the third rail 26, the second rail 24 can be synchronously moved by the third rail 26, that is, the second rail 24 and the third rail 26 can be synchronously moved toward the first direction D1 relative to the first rail 22 until synchronously moved to a second predetermined position P2, the release feature 40 of the first rail 22 is used to release the detent member 76 from the third rail 26. Specifically, during the process of synchronously displacing the second rail 24 and the third rail 26, the detent element 76 can be displaced along the first guide portion 42, the linear portion 44, the blocking portion 46 and the second guide portion 48 of the release feature 40 through the extension portion 83. For example, when the second rail 24 is displaced to the second predetermined position P2 relative to the first rail 22, the detent 76 is guided by the first guiding portion 42 through the extending portion 83 and is no longer in the second state S2 (e.g., the detent 76 returns to the first state S1), so that the detent portion 81 of the detent 76 is released from the opening 112 of the third rail 26.

As shown in fig. 11, when the engaging portion 81 of the engaging member 76 is disengaged from the opening 112 of the third rail 26, the second rail 24 is no longer displaced synchronously with the third rail 26, and only the third rail 26 is displaced in the first direction D1 relative to the second rail 24.

As best seen in fig. 12, the operating member 62 and the second blocking feature 60 are in a first operating state X1. Wherein the extension leg 66 of the second blocking feature 60 is located on the resilient portion 72 of the operating member 62. When the second rail 24 is displaced relative to the first rail 22 in the first direction D1 to a first open position E1, the abutting portion 68 of the second blocking feature 60 is blocked by the first blocking feature 38 of the first rail 22 to prevent the second rail 24 from being displaced relative to the first rail 22 in the first direction D1 from the first open position E1.

As shown in fig. 13 and 14, when the abutting portion 68 of the second blocking feature 60 of the second rail 24 is blocked by the first blocking feature 38 of the first rail 22, the second blocking feature 60 can be operated, for example, a user can apply a force F to the operating member 62, so that the elastic portion 72 of the operating member 62 drives the second blocking feature 60 to move from the first operation state X1 to a second operation state X2 through the at least one extending leg 66, so as to release the blocking relationship between the abutting portion 68 of the second blocking feature 60 and the first blocking feature 38. It should be noted that although the second blocking feature 60 is activated in this embodiment, it is possible that the first blocking feature 38 may be activated in alternative embodiments, both for the purpose of releasing the second blocking feature 60 from the blocking relationship with the first blocking feature 38.

As shown in fig. 15, when the second blocking feature 60 is released from the blocking relationship with the first blocking feature 38, the second rail 24 and the third rail 26 can be displaced relative to the first rail 22 from the first open position E1 in the first direction D1 and removed from the first channel 36 of the first rail 22.

As shown in fig. 16 and 17, the third rail 26 can be displaced relative to the second rail 24 in the first direction D1 until the fourth blocking feature 100 is blocked by the at least one third blocking feature 85 when the third rail is displaced to a second open position E2, so as to prevent the third rail 26 from being displaced from the second open position E2 in the first direction D1. Specifically, when the third rail 26 is displaced to the second open position E2 relative to the second rail 24, the first segment 107 of the elastic portion 106 of the fourth blocking feature 100 is blocked by the at least one third blocking feature 85. Preferably, when the third rail 26 is in the second open position E2 relative to the second rail 24, the first segment 107 of the fourth blocking feature 100 and the second segment 111 of the fifth blocking feature 102 are respectively located at two sides of the at least one third blocking feature 85. Wherein the fourth blocking feature 100 is operable to release the blocking relationship between the third blocking feature 85 and the fourth blocking feature 100. For example. A user can apply a force F to the elastic portion 106 of the fourth blocking feature 100 and/or the elastic portion 110 of the fifth blocking feature 102 to release the blocking relationship between the first segment 107 of the elastic portion 106 of the fourth blocking feature 100 and the at least one third blocking feature 85. It should be noted that although the fourth blocking feature 100 is activated for example in this embodiment, in alternative embodiments, the at least one third blocking feature 85 may be activated for the purpose of releasing the blocking relationship between the fourth blocking feature 100 and the at least one third blocking feature 85.

As shown in fig. 18, when the third blocking feature 85 and the fourth blocking feature 100 are released from the blocking relationship, the third rail 26 can be displaced relative to the second rail 24 from the second open position E2 in the first direction D1 and detached from the second channel 54 of the second rail 24.

As shown in fig. 19 and 20, when the second rail 24 and the third rail 26 are re-installed to the first rail 22 and the second rail 24 and the third rail 26 are displaced from the first open position E1 to a second direction D2 (e.g., a retracting direction) relative to the first rail 22, the detent 76 can be guided by the second guiding portion 48 of the release feature 40 through the extending portion 83 and can be displaced along the release feature 40.

As shown in fig. 21 and 22, when the second rail 24 is continuously displaced in the second direction D2 relative to the first rail 22, the latching element 76 is continuously displaced along the releasing feature 40 through the extending portion 83 until the third predetermined position P3 is reached, the extending portion 83 of the latching element 76 can be blocked by the blocking portion 46 of the releasing feature 40, so as to prevent the second rail 24 from being displaced in the second direction D2 relative to the first rail 22.

As shown in fig. 23 and 24, when the extending portion 83 of the detent member 76 is blocked by the blocking portion 46 of the release feature 40 and the third rail 26 is displaced in the second direction D2 relative to the second rail 24, the rear portion 87b of the third rail 26 can contact the detent portion 81 to drive the detent member 76 to swing at an angle, such that the extending portion 83 of the detent member 76 is no longer blocked by the blocking portion 46 of the release feature 40. In other words, the second rail 24 can be displaced in the second direction D2 relative to the first rail 22. Therefore, the second rail 24 and the third rail 26 can be folded in the second direction D2 relative to the first rail 22.

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

a. the second rail 24 and the third rail 26 can be detached from or attached to the first rail 22, which facilitates maintenance of the slide and/or the object by the user.

b. The third rail 26 can be removed from or attached to the second rail 24, which facilitates maintenance of the slide and/or object by the user.

c. The second rail 24 and the third rail 26 can be displaced in the first direction D1 synchronously with respect to the first rail 22 by a predetermined displacement stroke. According to this configuration, for example, when the third rail 26 carries an object, the second rail 24 and the third rail 26 can share the weight of the object together to increase the supporting strength.

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, a second rail and a third rail, wherein the second rail can move relative to the first rail, and the third rail can move relative to the second rail, which is characterized in that:

the first blocking feature and the second blocking feature are respectively positioned on the first rail and the second rail;

when the second rail moves to a first opening position relative to the first rail in a first direction, the second blocking feature is blocked by the first blocking feature so as to prevent the second rail from moving to the first direction from the first opening position;

wherein, one of the first blocking feature and the second blocking feature can be operated to release the blocking relationship between the second blocking feature and the first blocking feature, so that the second rail can be displaced from the first opening position to the first direction to be detached from the first rail;

the third rail is positioned on the first rail and the second rail, and is moved to a first opening position relative to the first rail;

the first rail is operatively connected to the second rail and the second rail is operatively connected to the third rail, and the first blocking feature and the second blocking feature are located on opposite sides of the first blocking feature when the first rail is in the first open position relative to the second rail.

2. The slide rail assembly of claim 1 further comprising an operating member for operating the second blocking feature.

3. The slide rail assembly of claim 2 wherein the second rail includes a through opening facing the first rail and the second blocking feature is positioned in correspondence with the through opening.

4. The slide rail assembly of claim 1 wherein one of the third blocking feature and the fourth blocking feature is operable to release the blocking relationship between the third blocking feature and the fourth blocking feature to allow the third rail to be displaced from the second open position in the first direction for removal from the second rail.

5. The slide rail assembly of claim 4 wherein the fourth blocking feature is operably connected to the third rail.

6. The slide rail assembly of claim 1 further comprising a locking member mounted on the second rail, wherein when the third rail moves from a retracted position to a first predetermined position relative to the second rail, the locking member is configured to lock the third rail, such that the second rail and the third rail can move synchronously in the first direction relative to the first rail.

7. The slide rail assembly of claim 6 wherein the first rail includes a release feature configured to release the catch from the third rail when the second rail and the third rail are simultaneously displaced relative to the first rail in the first direction to a second predetermined position, such that the third rail can be displaced relative to the second rail in the first direction.

8. The slide rail assembly of claim 7 wherein the latch is pivotally connected to the second rail, the slide rail assembly further comprising a resilient member for providing a resilient force to the latch, the third rail comprising a first wall, a second wall and a side wall connected between the first wall and the second wall, the latch being capable of maintaining a first state by the resilient member abutting against the first wall when the third rail is in the retracted position relative to the second rail.

9. The slide rail assembly of claim 8 wherein the third rail includes an opening and a rail wall adjacent to the opening, the latch member includes a latch portion, and when the third rail is at the first predetermined position relative to the second rail, the latch member can pivot from the first position relative to the second rail to a second position relative to the second rail in response to the elastic force of the elastic member, such that the latch portion enters the opening and the latch portion is located opposite to the rail wall.

10. The slide rail assembly of claim 7 wherein the second rail includes a through opening facing the first rail, the detent member includes an extension portion passing through the through opening, and the release feature includes a first guide portion, such that when the second rail and the third rail are synchronously moved in the first direction to the second predetermined position, the detent member is guided by the first guide portion through the extension portion, such that the detent member can be released from the third rail.

11. The slide rail assembly of claim 10 wherein the release feature further comprises a stop portion, wherein when the second rail is moved relative to the first rail from the first open position to a second position opposite the first position, the extension portion of the detent member is blocked by the stop portion to prevent the second rail from moving relative to the first rail in the second direction.

12. The slide rail assembly of claim 11 wherein the release feature further comprises a second guide portion, wherein the detent member is guided by the second guide portion through the extension portion when the second rail moves relative to the first rail from the first open position to the second position in the second direction to the third predetermined position.

13. The slide rail assembly of claim 11 wherein, when the third rail moves in the second direction relative to the second rail, the third rail drives the engaging member such that the extending portion of the engaging member is not blocked by the blocking portion.

14. The slide rail assembly of claim 12 wherein the release feature further comprises a linear portion, the stop portion and the linear portion being located between the first guide portion and the second guide portion.