CN111839038A

CN111839038A - Sliding rail assembly

Info

Publication number: CN111839038A
Application number: CN201910332411.3A
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: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-10-30
Anticipated expiration: 2039-04-24
Also published as: CN111839038B

Abstract

The invention relates to a sliding rail assembly, which comprises a first rail, a second rail, a first supporting rail, a second supporting rail, a third rail and a third supporting rail. The second rail can move relative to the first rail; the first support rail is fixedly connected with a first part of the second rail; the second support rail is movably connected with a second part of the second rail; the third rail is fixedly connected with the second support rail; the third support rail can move relative to the third rail.

Description

Sliding rail assembly

Technical Field

The invention relates to a slide rail, in particular to a slide rail assembly which is suitable for mounting a plurality of bearing objects and can realize opening of a plurality of sections.

Background

Such as the one disclosed in U.S. patent publication No. US 9,572,277B 2. The slide rail assembly includes a first rail, a second rail, a third rail, and an extension rail. Wherein, the second rail can move and displace longitudinally relative to the first rail; the third rail is movably connected with the first rail section of the second rail; an extension rail is fixedly mounted to the second rail section of the second rail. Wherein the third rail can mount a first chassis and the extension rail can mount a second chassis.

However, with the different market demands, how to develop a different slide rail product becomes an issue that cannot be ignored.

Disclosure of Invention

The invention aims to provide a slide rail assembly which can realize multi-section opening and has an innovative structure.

According to an aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a first support rail, a second support rail, a third rail, and a third support rail. The second rail is movably connected with the first rail and is provided with a first part and a second part; the first support rail is fixedly connected to the first portion of the second rail; the second support rail is movably connected with the second part of the second rail; the third rail is fixedly connected with the second support rail; the third support rail is movably connected with the third rail.

Preferably, the first rail is provided with a limiting feature located between the front end and the rear end of the first rail, the second support rail is provided with a corresponding feature, and when the second rail moves from a first retracted position to a first extended position in an opening direction relative to the first rail, the second support rail abuts against the limiting feature through the corresponding feature, so that the second support rail stays at the first extended position relative to the first rail.

Preferably, when the second rail moves from the first extending position to the opening direction to a second extending position, a predetermined distance is provided between the rear end of the first support rail and the front end of the second support rail.

Preferably, the slide rail assembly further comprises a locking member disposed on the second rail, and when the second rail is located at the second extending position relative to the first rail, the second rail is locked to the first rail through the locking member, so as to prevent the second rail from moving from the second extending position to a retracting direction.

Preferably, the slide rail assembly further comprises an operating member disposed on the second rail, wherein the operating member is used for driving the locking member to release the locking member from the first rail.

Preferably, when the second support rail stays at the first extended position and the third support rail is at a second retracted position relative to the third rail, the front end of the third support rail exceeds the front end of the second support rail by a first extended distance.

Preferably, when the second support rail stays at the first extending position and the third support rail moves from the second retracted position to the opening direction to a third extending position relative to the third rail, the front end of the third support rail exceeds the front end of the second support rail by a second extending distance, and the second extending distance is greater than the first extending distance.

Preferably, the third rail includes a blocking portion, and a working member is movably disposed on the third support rail, and when the third support rail is located at the third extending position relative to the third rail, the working member is in a first state and abuts against the blocking portion to prevent the third support rail from moving from the third extending position to the opening direction.

Preferably, when the workpiece is operated from the first state to a second state, the workpiece no longer abuts against the stop portion.

Preferably, the second support rail and the third rail are connected by at least one connecting member, wherein the connecting member includes a first portion, a second portion and a middle portion connected between the first portion and the second portion, the first portion and the second portion are substantially perpendicularly connected to the middle portion and respectively extend toward different directions, the first portion is fixedly connected to the second support rail, and the second portion is fixedly connected to the third rail.

Preferably, the slide rail assembly is adapted to a first carrying object, a second carrying object and a third carrying object, the first carrying object is disposed on the first supporting rail, the second carrying object is disposed on the second supporting rail, and the third carrying object is disposed on the third supporting rail, wherein when the second rail is in the second extending position and the third supporting rail is in the second retracting position, the first supporting rail completely exceeds the front end of the first rail, and a first space is defined between the first carrying object and the third carrying object.

Preferably, when the second rail is in the second extended position and the third support rail is in the third extended position, the third support rail completely exceeds the front end of the first rail, and a second space is defined between the third carrying object and the second carrying object.

According to another aspect of the present invention, a sliding rail assembly includes a first rail, a second rail, a first supporting rail, a second supporting rail, a third rail, a connecting member and a third supporting rail. The second rail is longitudinally displaceable relative to the first rail; the first support rail is fixedly connected with a front rail section of the second rail; the second support rail is movably connected with a rear rail section of the second rail; the connecting piece is used for connecting the second supporting rail and the third rail; the third support rail is longitudinally displaceable relative to the third 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 in a folded state according to an embodiment of the present invention.

Fig. 2 is an enlarged view of the region a of fig. 1.

Fig. 3 is an enlarged view of the region B of fig. 1.

Fig. 4 is a schematic perspective view illustrating a slide rail assembly according to an embodiment of the invention in an extended state.

Fig. 5 is a perspective view illustrating that the first rail, the second rail, the first support rail and the second support rail of the slide rail assembly according to the embodiment of the invention can form a first slide rail device, and the first slide rail device is in a folded state.

Fig. 6 is an exploded view of the first slide rail device of the slide rail assembly according to the embodiment of the invention.

Fig. 7 is an exploded view of a second rail, a second support rail and related sliding rail components of the sliding rail assembly according to the embodiment of the invention.

Fig. 8 is a perspective view illustrating that the third rail and the third support rail of the slide rail assembly according to the embodiment of the invention can form a second slide rail device, and the second slide rail device is in a retracted state.

Fig. 9 is an exploded view of the second slide rail device of the slide rail assembly according to the embodiment of the invention.

Fig. 10 is a schematic view illustrating a slide rail assembly in a retracted state according to an embodiment of the present invention.

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

Fig. 12 is a schematic view illustrating a first slide rail device of the slide rail assembly in a first extended state and a second slide rail device of the slide rail assembly in a retracted state according to an embodiment of the invention.

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

Fig. 14 is a schematic view illustrating that the second rail of the first slide rail device of the slide rail assembly according to the embodiment of the invention is operated from the first extended state to the opening direction, and the second slide rail device is in the retracted state.

Fig. 15 is a schematic view illustrating the second rail of the first slide rail device of the slide rail assembly of the embodiment of the invention being operated from the first extended state to the opening direction.

Fig. 16 is a schematic view illustrating a first slide rail device of the slide rail assembly in a second extended state and a second slide rail device of the slide rail assembly in a retracted state according to an embodiment of the invention.

Fig. 17 is a schematic view illustrating the first slide rail device of the slide rail assembly of the embodiment of the invention in a second extended state by the first rail being engaged by the engaging member.

Fig. 18 is a perspective view illustrating the first slide rail device of the slide rail assembly in the second extended state according to the embodiment of the invention.

Fig. 19 is a schematic view of the slide rail assembly according to the embodiment of the invention in an extended state.

Fig. 20 is a schematic view illustrating the slide rail assembly in an extended state and the third support rail being capable of being separated from the third rail in the opening direction according to the embodiment of the present invention.

Fig. 21 is a schematic view illustrating the first slide rail device of the slide rail assembly of the embodiment of the invention being released from the first rail by the locking member and no longer being in the second extended state.

Fig. 22 is a schematic view illustrating that a slide rail of the slide rail assembly according to the embodiment of the invention can carry a plurality of carriers.

Fig. 23 is a schematic view illustrating a first state in which the slide rail assembly of the embodiment of the invention is applied to an object and a slide rail of the slide rail assembly can carry a plurality of carrying objects.

Fig. 24 is a schematic view illustrating a second state in which the slide rail assembly of the embodiment of the invention is applied to an object and a slide rail of the slide rail assembly can carry a plurality of carrying objects.

Detailed Description

As shown in fig. 1, fig. 2 and fig. 3, the slide rail assembly 20 of the embodiment of the invention includes a first rail 22, a second rail 24, a first supporting rail 26, a second supporting rail 28, a third rail 30 and a third supporting rail 32.

The second rail 24 is longitudinally displaceable relative to the first rail 22; the first support rail 26 is fixedly connected to a first portion of the second rail 24; the second support rail 28 is movably connected to a second portion of the second rail 24; the third rail 30 is fixedly connected to the second support rail 28, preferably, the third rail 30 is fixedly connected to the second support rail 28 by at least one connecting member 25, such that the third rail 30 and the second support rail 28 are on-line at different longitudinal axes; the third support rail 32 is longitudinally displaceable relative to the third rail 30.

Further, the slide rail assembly 20 can be in a retracted state. The second rail 24 is located at a first folding position R1 corresponding to the first rail 22, and the third supporting rail 32 is located at a second folding position R2 corresponding to the third rail 30.

As shown in fig. 4, the slide rail assembly 20 is in an extended state. The second support rail 28 can be located at a first extending position E1 relative to the first rail 22. The second rail 24 is in a second extended position E2 relative to the first rail 22 (or the second support rail 28), and the third support rail 32 is in a third extended position E3 relative to the third rail 30.

As shown in fig. 5 and 6, the first rail 22 has a front end 22a and a rear end 22 b. The first rail 22 includes a first wall 27a, a second wall 27b, and a longitudinal wall 29 connected between the first wall 27a and the second wall 27b of the first rail 22. Wherein the first wall 27a, the second wall 27b and the longitudinal wall 29 together define a first channel.

Preferably, the first rail 22 further comprises a rear stop structure 31 and a front stop structure 33. The rear blocking structure 31 is located adjacent to the rear end 22b of the first rail 22, and the rear blocking structure 31 is the longitudinal wall 29 with at least one protrusion located in the first channel, but is not limited thereto. On the other hand, the front blocking structure 33 is located adjacent to the front end 22a of the first rail 22, and the front blocking structure 33 is taken as at least one protrusion located on the first wall 27a and/or the second wall 27b of the first channel, for example, but not limited in implementation.

Preferably, the first rail 22 is provided with a limiting feature 34 between the front end 22a and the rear end 22b of the first rail 22, where the limiting feature 34 is a protrusion between the front end 22a and the rear blocking structure 31.

Preferably, the first rail 22 is provided with a guiding structure 36 adjacent to the front end 22a of the first rail 22, here, taking the longitudinal wall 29 of the guiding structure 36 in the first channel as an example, and the guiding structure 36 includes a guiding surface 36a and an extending section 36b adjacent to the guiding surface 36 a. The guiding surface 36a is an inclined surface or an arc surface, and the extending section 36b extends to the front end 22a of the first rail 22.

The second rail 24 is movably connected to the first rail 22. Further, the second rail 24 is mounted in the first channel of the first rail 22. The second rail 24 has a front end 24a and a rear end 24 b. The second rail 24 includes a first wall 42a, a second wall 42b, and a longitudinal wall 44 connected between the first wall 42a and the second wall 42b of the second rail 24. The first wall 42a, the second wall 42b and the longitudinal wall 44 together define a second channel. The second rail 24 has the first portion and the second portion, such as a front rail section and a rear rail section.

Preferably, the first wall 42a and the second wall 42b of the second rail 24 have at least one contact portion 46. When the second rail 24 is located at the second extended position E2 relative to the first rail 22, the contact portion 46 of the second rail 24 is pressed against the front stop structure 33 of the first rail 22 by the ball sliding aid 47 disposed between the first rail 22 and the second rail 24, so as to prevent the second rail 24 from being displaced from the second extended position E2 in an opening direction.

As shown in FIG. 7, the slide assembly preferably further includes a latch 48 and an operating member 50. The locking member 48 is disposed on the second rail 24; the operating member 50 is operatively connected to the latch 48.

As shown in fig. 6, the first support rail 26 is fixedly connected to the front rail segment of the second rail 24. For example, the first support rail 26 can be connected to the second rail 24 by screwing, riveting, welding or clipping, and the like, wherein the first support rail 26 is connected to the longitudinal wall 44 of the second rail 24 by a screw 51 and is located in the second channel.

The second support rail 28 is movably connected to the rear rail section of the second rail 24 and is located within the second channel. Preferably, the slide assembly 20 further includes another ball-slide assist device 52 slidably contacting between the second rail 24 and the second support rail 28.

Preferably, the second support rail 28 is provided with a corresponding feature 54, and the corresponding feature 54 is configured to cooperate with the limiting feature 34 of the first rail 22. The corresponding feature 54 can be molded directly into the second support rail 28; alternatively, in this embodiment, the corresponding feature 54 is an additional member attached to the second support rail 28.

As shown in fig. 7, the second support rail 28 is mounted on the rear rail section of the second rail 24 and is located in the second channel of the second rail 24 (it should be noted that the first support rail 26 is not shown in fig. 7). Wherein the corresponding feature 54 is an additional member connected to the second support rail 28 adjacent the rear end of the second support rail 28 by a fastener 56. The corresponding feature 54 includes a supporting portion 54a and a pair of supporting portions 54b connected to the supporting portion 54 a. The pair of supporting portions 54a is used to support the first wall 27a and the second wall 27b of the first rail 22.

The latch 48 is, for example, a spring or a flexible object. The latch 48 includes a resilient arm 48a and at least one latch portion 48b disposed on the resilient arm 48 a. The at least one latching portion 48b passes through the at least one hole 55 of the second rail 24, and the at least one latching portion 48b faces the first rail 22 in response to the elastic force of the elastic arm 48 a. On the other hand, the operating member 50 is disposed on the second rail 24, for example, the operating member 50 is movably connected to the second rail 24. Here, it is exemplified that the operating member 50 has at least one longitudinal long hole 58 (or elongated slot), and is connected to the second rail 24 through a portion of the at least one longitudinal long hole by at least one mounting member 60, so that the operating member 50 can be longitudinally displaced relative to the second rail 24. Further, the operating member 50 has a longitudinal body 50a and a driving portion 50b connected to the longitudinal body 50 a. The longitudinal body 50a has the at least one longitudinal slot 58; the driving portion 50b is tilted at an angle relative to the longitudinal body 50a to drive the elastic arm 48a of the latch 48.

As shown in fig. 8 and 9, the third rail 30 has a front end 30a and a rear end 30 b. The third rail 30 includes a first wall 66a, a second wall 66b, and a longitudinal wall 68 connected between the first wall 66a and the second wall 66b of the third rail 30. The first wall 66a, the second wall 66b and the longitudinal wall 68 together define a third channel. Preferably, the third rail 30 includes a stop 70 located adjacent the front end 30a of the third rail 30 and within the third channel. Here, the blocking portion 70 projects transversely with respect to the longitudinal wall 68 of the third rail 30.

The third support rail 32 is movably connected to the third rail 30. In particular, the third support rail 32 is mounted within the third channel of the third rail 30. Preferably, the slide assembly 20 further includes a working member 72 and a release member 74 operatively connected to the working member 72. The working member 72 is movably disposed on the third support rail 32, and here, the working member 72 is pivoted to the third support rail 32 through a shaft 76. Preferably, a base 78 is disposed on the third support rail 32, and the base 78 includes a spring portion 78a for providing a spring force to the workpiece 72 to keep the workpiece 72 in a first state. The release member 74 includes a release portion 74a, a driving section 74b and a longitudinal portion 74c connected between the release portion 74a and the driving section 74 b.

As shown in fig. 10, the slide rail assembly 20 is in the retracted state. The second rail 24 is located at the first retracted position R1 relative to the first rail 22, and the third supporting rail 32 is located at the second retracted position R2 relative to the third rail 30 (see fig. 1).

When the second rail 24 is located at the first retracted position R1 relative to the first rail 22, the rear end 24b of the second rail 24 can be abutted against the rear blocking structure 31 of the first rail 22 through the pair of supporting portions 54b of the corresponding feature 54 of the second supporting rail 28, and the abutting portion 54a of the corresponding feature 54 has a distance from the limiting feature 34 of the first rail 22. Wherein, the operating member 50 is operatively connected to the latch 48. At least one latching portion 48b of the latching member 48 passes through at least one hole 55 (see fig. 11), and the at least one latching portion 48b of the latching member 48 is spaced apart from the guiding structure 36 of the front end 22a of the first rail 22.

On the other hand, the third rail 30 is fixedly connected to the second support rail 28 by the at least one connecting member 25 such that the third rail 30 and the second support rail 28 are on different longitudinal axes. Wherein the working member 72 disposed on the third support rail 32 can respond to the elastic force provided by the elastic portion 78a of the base 78 to maintain the first state, and the working member 72 is spaced from the blocking portion 70 of the third rail 30. And, the release member 74 is operatively connected to the working member 72.

As shown in fig. 12, when the second rail 24 is displaced from the first retracted position R1 to the opening direction D1 to the first extended position E1 relative to the first rail 22, the second support rail 28 can be carried by the second rail 24 to move to the first extended position E1 (the first extended position E1 is schematically illustrated as being marked at the front end of the second support rail 28 in fig. 12), and the second support rail 28 can be abutted against the limiting feature 34 of the first rail 22 through the abutting portion 54a of the corresponding feature 54 (this portion can be referred to in fig. 13), so that the second support rail 28 can be stopped at the first extended position E1 relative to the first rail 22. On the other hand, the third rail 30 is also in the first extended position E1 with the second support rail 28.

As shown in fig. 14, the second support rail 28 stays at the first extended position E1 relative to the first rail 22. When the second rail 24 is continuously displaced from the first extending position E1 toward the opening direction D1 relative to the first rail 22 (or the second supporting rail 28), the latching portion 48b of the latching member 48 can be in sliding contact with the guiding structure 36 (guiding surface 36a) of the front end 22a of the first rail 22 (this portion can be referred to as fig. 15), so that the elastic arm 48a of the latching member 48 swings at an angle to accumulate an elastic force.

As shown in fig. 16, when the second rail 24 is further displaced relative to the first rail 22 (or the second supporting rail 28) in the opening direction D1 to the second extending position E2, a predetermined distance is formed between the rear end 26b of the first supporting rail 26 and the front end 28a of the second supporting rail 28. The latching portion 48b of the latching member 48 can be latched to the front end 22a of the first rail 22 (see fig. 17 and 18) in response to the elastic arm 48a releasing the elastic force, so as to prevent the second rail 24 from moving from the second extended position E2 to a retracted direction D2 (opposite to the opening direction D1). As shown in fig. 16, when the second support rail 28 stays at the first extended position E1 and the third support rail 32 is at the second retracted position R2 relative to the third rail 30, the front end 32a of the third support rail 32 exceeds the front end 28a of the second support rail 28 by a first extended distance Y1.

As shown in fig. 19, the second support rail 28 is in the first extended position E1 relative to the first rail 22, and the second rail 24 is in the second extended position E2 relative to the first rail 22 (or the second support rail 28). On the other hand, the third supporting rail 32 can be displaced from the second retracted position R2 to the opening direction D1 to the third extended position E3 (see fig. 4 for a part of this disclosure). The front end 32a of the third support rail 32 exceeds the front end 28a of the second support rail 28 by a second extending distance Y2, and the second extending distance Y2 is greater than the first extending distance Y1. Preferably, when the third support rail 32 is located at the third extending position E3 relative to the third rail 30, the working member 72 is located at the first state K1 and abuts against the stopper 70 of the third rail 30, so as to prevent the third support rail 32 from being displaced from the third extending position E3 to the opening direction D1.

As shown in FIG. 20, the working member 72 can be operated from the first state K1 to a second state K2 such that the working member 72 no longer abuts against the abutment 70. In other words, the third support rail 32 can be continuously displaced from the third extending position E3 to the opening direction D1 to be separated from the third rail 30. Preferably, the user applies a force F1 to the release element 74, so that the release element 74 via the driving section 74b deflects the working member 72 from the first state K1 to the second state K2 at an angle and no longer abuts against the stop 70 of the third rail 30.

As shown in fig. 21, when the second rail 24 is locked to the front end 22a of the first rail 22 by the locking portion 48b of the locking member 48 and located at the second extending position E2 relative to the first rail 22 (or the second supporting rail 28), the user can apply another force F2 to the operating member 50, so that the operating member 50 drives the elastic arm 48a of the locking member 48 to swing at an angle by the driving portion 50b, and the locking portion 48b is released from the first rail 22. Therefore, the second rail 24 can be folded from the second extending position E2 to the folding direction D2 relative to the first rail 22. Since the second supporting rail 28 is disposed in the second channel of the second rail 24, the second supporting rail 28 can be folded along with the second rail 24 relative to the first rail 22.

As shown in fig. 22, the third rail 30 is fixedly connected to the second support rail 28 by at least one connecting member 25, for example, three connecting members 25. Preferably, each connecting member 25 comprises a first portion 25a, a second portion 25b and a middle portion 25c connected between the first portion 25a and the second portion 25b, wherein the first portion 25a and the second portion 25b are substantially perpendicular to each other and extend in different directions respectively connecting two ends of the middle portion 25 c. Preferably, the first portion 25a is fixedly connected to the second support rail 28, and the second portion 25b is fixedly connected to the back side of the longitudinal wall 68 of the third rail 30 (i.e., the side opposite the third channel of the third rail 30).

Further, the slide rail assembly 20 is suitable for a first carrier 80, a second carrier 82 and a third carrier 84. These

carriers

80, 82, 84 are, for example, electronic devices, but are not limited in implementation.

Wherein, the first supporting object 80 is disposed on the first supporting rail 26; the second supporting object 82 is disposed on the second supporting rail 28; the third bearing object 84 is disposed on the third support rail 32. Specifically, the first support rail 26, the second support rail 28 and the third support rail 32 are respectively provided with a plurality of longitudinally arranged first mounting portions 86, second mounting portions 88 and third mounting portions 90 for detachably mounting the first carrying object 80, the second carrying object 82 and the third carrying object 84 respectively.

As shown in fig. 23, the

carriers

80, 82, 84 can be mounted to an object 92 (e.g., a cabinet or rack) by a pair of rail assemblies 20.

Specifically, the first rail 22 of each slide rail assembly 20 may be mounted to the object 92. When the second rail 24 is located at the second extended position E2 relative to the first rail 22 and the third supporting rail 32 is located at the second retracted position R2 relative to the third rail 30, the first supporting rail 26 completely extends beyond the front end 22a of the first rail 22 (see fig. 16), and a first space S1 is defined between the first carrying object 80 and the third carrying object 84. The first space S1 can facilitate the maintenance of the components between the first carrier 80 and the third carrier 84 or the related components of the slide rail.

As shown in fig. 24, when the second rail 24 is located at the second extended position E2 relative to the first rail 22 and the third support rail 32 is located at the third extended position E3 relative to the third rail 30, the third support rail 32 completely extends beyond the front end 22a of the first rail 22 (see fig. 19), and a second space S2 is defined between the third carrying object 84 and the second carrying object 82. The second space S2 can facilitate the maintenance of the components between the second carrier 82 and the third carrier 84 or the related components of the slide rail.

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

(1) the slide rail assemblies 20 have innovative configuration relationships between the plurality of slide rails. For example, the slide rail assembly 20 includes the first rail 22, the second rail 24, the first support rail 26, the second support rail 28, the third rail 30, and the third support rail 32. Wherein the second rail 24 is movably connected to the first rail 22; the first support rail 26 is fixedly connected to the second rail 24; the second support rail 28 is movably connected to the second rail 24; the third rail 30 is fixedly connected to the second support rail 28; the third support rail 32 is movably connected to the third rail 30.

(2) The third rail 30 is fixedly connected to the second support rail 28 by at least one connecting member 25 such that the third rail 30 is on-line with the second support rail 28 at different longitudinal axes.

(3) When the second support rail 28 is at the first extended position E1 and the third support rail 32 is at the second retracted position R2 relative to the third rail 30, the front end 32a of the third support rail 32 exceeds the front end 28a of the second support rail 28 by a first extended distance Y1; when the second support rail 28 is in the first extended position E1 and the third support rail 32 is in the third extended position E3 relative to the third rail 30, the front end 32a of the third support rail 32 exceeds the front end 28a of the second support rail 28 by a second extended distance Y2, and the second extended distance Y2 is greater than the first extended distance Y1.

(4) When the second rail 24 is at the second extended position E2 and the third supporting rail 32 is at the second retracted position R2, the first supporting rail 26 completely exceeds the front end 22a of the first rail 22, and a first space S1 is defined between the first carrying object 80 and the third carrying object 84, so as to facilitate the maintenance operation of the carrying object or the related components of the slide rail; when the second rail 24 is in the second extended position E2 and the third support rail 32 is in the third extended position E3, the third support rail 32 completely exceeds the front end 22a of the first rail 22, and a second space S2 is defined between the third carrying object 84 and the second carrying object 82, so as to facilitate the maintenance operation of the carrying object or the related components of the slide rail.

(5) The second support rail 28 and the third rail 30 are connected by a connecting member 25, wherein the connecting member 25 comprises a first portion 25a, a second portion 25b and a middle portion 25c connected between the first portion 25a and the second portion 25b, the first portion 25a and the second portion 25b are substantially perpendicularly connected to the middle portion 25c and extend in different directions, respectively, the first portion 25a is fixedly connected to the second support rail 28, and the second portion 25b is fixedly connected to the third rail 30. According to this configuration, the third rail 30 is on a different longitudinal axis than the second support rail 28, and facilitates the third rail 30 providing the third support rail 32 to carry the third carrying object 84.

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, a first supporting rail, a second supporting rail, a third rail and a third supporting rail, and is characterized in that:

The second rail is movably connected with the first rail and is provided with a first part and a second part;

the first support rail is fixedly connected to the first portion of the second rail;

the second support rail is movably connected with the second part of the second rail;

the third rail is fixedly connected with the second support rail; and

the third support rail is movably connected with the third rail.

2. The slide rail assembly of claim 1 wherein the first rail has a limiting feature located between the front and rear ends of the first rail, and the second support rail has a corresponding feature such that when the second rail moves from a first retracted position to an open position to a first extended position relative to the first rail, the second support rail abuts the limiting feature via the corresponding feature such that the second support rail remains in the first extended position relative to the first rail.

3. The slide rail assembly of claim 2 wherein the rear end of the first support rail is spaced a predetermined distance from the front end of the second support rail when the second rail is moved from the first extended position to the second extended position in the opening direction.

4. The slide rail assembly of claim 3 further comprising a locking member disposed on the second rail, wherein when the second rail is at the second extended position relative to the first rail, the second rail is locked to the first rail by the locking member to prevent the second rail from moving from the second extended position to a retracted position.

5. The slide rail assembly of claim 4 further comprising an operating member disposed on the second rail, the operating member being configured to actuate the detent member to disengage from the first rail.

6. The slide rail assembly of claim 3 wherein when the second support rail is in the first extended position and the third support rail is in a second retracted position relative to the third rail, the front end of the third support rail extends beyond the front end of the second support rail by a first extension distance.

7. The slide rail assembly of claim 6 wherein when the second support rail stays at the first extended position and the third support rail moves relative to the third rail from the second retracted position to a third extended position in the opening direction, the front end of the third support rail exceeds the front end of the second support rail by a second extended distance, and the second extended distance is greater than the first extended distance.

8. The slide assembly of claim 7 wherein the third rail includes a stop portion and a working member is movably disposed on the third support rail, and when the third support rail is in the third extended position relative to the third rail, the working member is in a first state and abuts against the stop portion to prevent the third support rail from being displaced from the third extended position toward the opening direction.

9. The slide rail assembly of claim 8 wherein the working member no longer abuts the stop portion when the working member is operated from the first state to a second state.

10. The slide rail assembly of claim 1 wherein the third rail is fixedly coupled to the second support rail by at least one coupling member.

11. The slide rail assembly of claim 7, being adapted to a first carrier, a second carrier, and a third carrier, wherein the first carrier is disposed on the first support rail, the second carrier is disposed on the second support rail, and the third carrier is disposed on the third support rail, wherein when the second rail is in the second extended position and the third support rail is in the second retracted position, the first support rail completely extends beyond the front end of the first rail, and a first space is defined between the first carrier and the third carrier.

12. The slide rail assembly of claim 11 wherein when the second rail is in the second extended position and the third support rail is in the third extended position, the third support rail extends completely beyond the front end of the first rail and the third carrier and the second carrier define a second space therebetween.

13. A slide rail assembly comprises a first rail, a second rail capable of longitudinally moving relative to the first rail and a third rail, characterized in that:

the slide rail assembly further comprises:

a first support rail fixedly connected to a front rail section of the second rail;

a second support rail is movably connected with a rear rail section of the second rail;

the connecting piece is used for connecting the second supporting rail and the third rail; and

a third support rail is longitudinally displaceable relative to the third rail.

14. The slide rail assembly of claim 13 wherein the first rail has a limiting feature located between the front and rear ends of the first rail, and the second support rail has a corresponding feature such that when the second rail moves from a first retracted position to an open position to a first extended position relative to the first rail, the second support rail abuts the limiting feature via the corresponding feature such that the second support rail remains in the first extended position relative to the first rail.

15. The slide rail assembly of claim 14 wherein the rear end of the first support rail is spaced a predetermined distance from the front end of the second support rail when the second rail is moved from the first extended position to the second extended position in the opening direction.

16. The slide rail assembly of claim 15 further comprising a locking member disposed on the second rail, wherein when the second rail is at the second extended position relative to the first rail, the second rail is locked to the first rail by the locking member to prevent the second rail from moving from the second extended position to a retracted position.

17. The slide rail assembly of claim 15 wherein when the second support rail is in the first extended position and the third support rail is in a second retracted position relative to the third rail, the front end of the third support rail extends beyond the front end of the second support rail by a first extension distance.

18. The slide rail assembly of claim 17 wherein when the second support rail stays at the first extended position and the third support rail moves relative to the third rail from the second retracted position to a third extended position in the opening direction, the front end of the third support rail exceeds the front end of the second support rail by a second extended distance, and the second extended distance is greater than the first extended distance.

19. The slide rail assembly of claim 18, being adapted to a first carrier, a second carrier, and a third carrier, wherein the first carrier is disposed on the first support rail, the second carrier is disposed on the second support rail, and the third carrier is disposed on the third support rail, wherein when the second rail is in the second extended position and the third support rail is in the second retracted position, the first support rail completely extends beyond the front end of the first rail, and a first space is defined between the first carrier and the third carrier; when the second rail is in the second extending position and the third supporting rail is in the third extending position, the third supporting rail completely exceeds the front end of the first rail, and a second space is defined between the third bearing object and the second bearing object.

20. The slide rail assembly of claim 13 wherein the connecting member comprises a first portion, a second portion and a middle portion connected between the first portion and the second portion, the first portion and the second portion being substantially perpendicular to the middle portion and extending in different directions, the first portion being fixedly connected to the second support rail and the second portion being fixedly connected to the third rail.