Slide rail assembly

Abstract

The present invention relates to a slide rail assembly, comprising a first rail, a second rail, a third rail, a first support device and at least one support member. The first rail has a first end and a second end opposite to each other; the second rail can be longitudinally displaced relative to the first rail; the third rail can be longitudinally displaced relative to the second rail; the first support device exceeds the first end of the first rail by a predetermined longitudinal distance; and at least one support member is disposed on one of the second rail and the first support device.

Description

Technical Field

[0001] The present invention relates to a slide rail, in particular to a slide rail assembly that can improve the support when the slide rail is displaced relatively. Background Art

[0002] As disclosed in U.S. Patent Publication No. US 8,147,011 B2, a slide rail assembly includes a first rail member, a second rail member, and a third rail member. The second rail member is movably installed between the first rail member and the second rail member. Among them, the second rail member includes a first rail section and a second rail section connected back to back. The second rail section is provided with a plurality of first rollers and second rollers; when the third rail member is pulled out relative to the second rail member, the first rollers and the second rollers help and are used to support the third rail member. Or, when the third rail member is pulled out relative to the second rail member to a predetermined stroke, the support wheels of the front support connected to the first rail member can also be used to support the third rail member. This case mainly reveals that when the third rail member is pulled out and separated from the second rail member and then reassembled again, the pair of support wheels of the front bracket are used to provide the third rail member with easy guidance and reassembly with the second rail member, and assist the third rail member to slide.

[0003] As disclosed in U.S. Patent Publication No. US 10,159,343 B2, a slide rail assembly includes a first rail, a second rail, a third rail, a first bracket, and a second bracket. The third rail is movably installed between the first rail and the second rail. The first bracket and the second bracket can both move relative to the first rail. Among them, the slide rail assembly further includes at least one rolling member, and the first bracket and the first rail can move relative to each other through the at least one rolling member. This case mainly reveals that the first bracket and the first rail can displace relative to each other through the first rolling member or the second rolling member, which helps the first bracket and the first rail to move relative to each other, so as to increase the extension distance of the slide rail assembly relative to the frame.

[0004] As disclosed in Japanese Patent Publication No. JP 5514379 B2, a slide rail assembly includes a movable rail, a fixed rail, and a pressure contact member. The movable rail and the fixed rail can move relative to each other, and the movable rail and the fixed rail can contact and displace relative to each other through the pressure contact member. The pressure contact member is a roller. This case mainly reveals that when the movable rail is displaced relative to the fixed rail to a position close to the closed position, through the pressure contact member of the roller, it helps the movable rail to self-close relative to the fixed rail.

[0005] Although the above three patent cases have disclosed the related technical features of the application of rollers (rolling members) to slide rails, however, with different market demands, how to develop a different slide rail product has become an important issue. Summary of the Invention

[0006] An object of the present invention is to provide a slide rail assembly that can improve the support when the slide rails are displaced relative to each other.

[0007] Another object of the present invention is to provide a slide rail assembly that can reduce the resistance when the slide rails are displaced relative to each other.

[0008] According to one aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a third rail, a first support device, and at least one support member. The first rail has a first end and a second end opposite to each other; the second rail can be longitudinally displaced relative to the first rail; the third rail can be longitudinally displaced relative to the second rail; the first support device extends beyond the first end of the first rail by a predetermined longitudinal distance; at least one support member is disposed on one of the second rail and the first support device.

[0009] According to another aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a third rail, a first support device, and at least one support member. The second rail can be longitudinally displaced relative to the first rail; the third rail can be longitudinally displaced relative to the second rail; the first support device extends beyond the first end of the first rail by a predetermined longitudinal distance; at least one support member is disposed on the second rail; wherein, the first rail, the second rail, and the third rail all have a first end and a second end opposite to each other; wherein, when the second rail longitudinally displaces from a retracted position to an extended position in an opening direction relative to the first rail, the at least one support member contacts and supports along the first support device; wherein, one of the at least one support member and the first support device includes an arc-shaped profile, and the other of the at least one support member and the first support device includes a linear segment for mutual contact and support with the arc-shaped profile; wherein, when the second rail is in the extended position relative to the first rail, the first end of the second rail extends beyond the first end of the first rail; wherein, when the second rail is in the extended position relative to the first rail, the third rail can be displaced relative to the second rail to an open position; wherein, when the third rail is in the open position relative to the second rail, the first end of the third rail extends beyond the first end of the second rail.

[0010] According to another aspect of the present invention, a slide rail assembly is applicable to mounting a load to a frame. The frame includes a first column and a second column. The load includes a first predetermined portion and a second predetermined portion. The first predetermined portion has a first width, and the second predetermined portion has a second width smaller than the first width. The slide rail assembly includes a first rail, a second rail, a third rail, a first support device, a second support device, and at least one support member. The first rail has a first end and a second end opposite to each other; the second rail can be longitudinally displaced relative to the first rail; the third rail can be longitudinally displaced relative to the second rail, and the third rail is used for mounting to the second predetermined portion of the load; the first support device extends beyond the first end of the first rail by a predetermined longitudinal distance, and the first support device is used for providing the first rail to be mounted to the first column; the second support device can move relative to the first support device, and the second support device is used for providing the first rail to be mounted to the second column; at least one support member is disposed on one of the second rail and the first support device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] To further illustrate and confirm the above objects, structural features, and effects of the present invention, the present invention will be described in detail below with reference to the drawings, wherein:

[0012] Figure 1 Exploded schematic view showing the slide rail assembly of the first embodiment of the present invention.

[0013] Figure 2 Schematic view showing the slide rail assembly of the first embodiment of the present invention in a retracted state.

[0014] Figure 3 Schematic view showing the slide rail assembly of the first embodiment of the present invention in an extended state.

[0015] Figure 4 Exploded schematic view showing that a load of the first embodiment of the present invention can be mounted to a frame through the slide rail assembly.

[0016] Figure 5 Schematic view showing that the load of the first embodiment of the present invention can be mounted to the frame through a pair of slide rail assemblies.

[0017] Figure 6 Partial schematic view showing that the load of the first embodiment of the present invention can be located within the frame through the slide rail assembly in the retracted state.

[0018] Figure 7 Partial schematic view showing that the load of the first embodiment of the present invention can be located outside the frame through the slide rail assembly in the extended state.

[0019] Figure 8Schematic diagram showing that the carrier of the first embodiment of the present invention can be installed on the frame through the pair of slide rail assemblies.

[0020] Figure 9 Schematic diagram showing that the slide rail assembly of the second embodiment of the present invention is installed on the frame and in the retracted state.

[0021] Figure 10 Schematic diagram showing that the slide rail assembly of the second embodiment of the present invention is installed on the frame and in the extended state.

[0022] Figure 11 Schematic diagram showing that the slide rail assembly of the third embodiment of the present invention is installed on the frame and in the retracted state.

[0023] Figure 12 Schematic diagram showing that the slide rail assembly of the third embodiment of the present invention is installed on the frame and in the extended state.

[0024] Figure 13 Schematic diagram showing that the carrier of the third embodiment of the present invention can be installed on the frame through the slide rail assembly.

[0025] Figure 14 Schematic diagram showing that the slide rail assembly of the fourth embodiment of the present invention is installed on the frame and in the retracted state.

[0026] Figure 15 Schematic diagram showing that the slide rail assembly of the fourth embodiment of the present invention is installed on the frame and in the extended state.

[0027] Figure 16 Partial schematic diagram of the first perspective showing that the slide rail assembly of the fourth embodiment of the present invention is installed on the frame and in the extended state.

[0028] Figure 17 Partial schematic diagram of the second perspective showing that the slide rail assembly of the fourth embodiment of the present invention is installed on the frame and in the extended state. Detailed Description of the Invention

[0029] As Figure 1 And Figure 2As shown, a slide rail assembly 20 of the first embodiment of the present invention includes a first rail 22, a second rail 24, a third rail 26, a first support device 28, and at least one support member 30. Among them, the second rail 24 is movably installed between the first rail 22 and the third rail 26. Preferably, the slide rail assembly 20 further includes a second support device 32. The first rail 22 (such as an outer rail), the second rail 24 (such as a middle rail), and the third rail 26 (such as an inner rail) can be longitudinally displaced relative to each other. It is worth mentioning that in this embodiment, the X-axis direction is the longitudinal direction (or the length direction or the displacement direction of the slide rail), the Y-axis direction is the transverse direction (or the lateral direction of the slide rail), and the Z-axis direction is the vertical direction (or the height direction of the slide rail).

[0030] The first rail 22 has a first end 22a and a second end 22b opposite to each other, for example, a front end and a rear end, but in practice, it is not limited. The first rail 22 includes a first wall 34a, a second wall 34b, and a longitudinal wall 36 connected between the first wall 34a and the second wall 34b of the first rail 22. The first wall 34a, the second wall 34b, and the longitudinal wall 36 of the first rail 22 together define a first channel 38.

[0031] The second rail 24 is movably installed into the first channel 38 of the first rail 22. The second rail 24 has a first end 24a and a second end 24b opposite to each other, for example, a front end and a rear end, but in practice, it is not limited. The second rail 24 includes a first wall 40a, a second wall 40b, and a longitudinal wall 42 connected between the first wall 40a and the second wall 40b of the second rail 24. The first wall 40a, the second wall 40b, and the longitudinal wall 42 of the second rail 24 together define a second channel 44.

[0032] The third rail 26 is movably installed into the second channel 44 of the second rail 24. The third rail 26 has a first end 26a and a second end 26b opposite to each other, for example, a front end and a rear end, but in practice, it is not limited. The third rail 26 includes a first wall 46a, a second wall 46b, and a longitudinal wall 48 connected between the first wall 46a and the second wall 46b of the third rail 26.

[0033] Preferably, the slide rail assembly 20 further includes at least one first sliding assistance device 50 movably installed between the first rail 22 and the second rail 24. The at least one first sliding assistance device 50, for example, includes a plurality of first balls 52 that can be used to improve the smoothness when the second rail 24 and the first rail 22 are displaced relative to each other.

[0034] Preferably, the slide rail assembly 20 further includes a second sliding assisting device 54 movably installed between the second rail 24 and the third rail 26. The second sliding assisting device 54 includes, for example, a plurality of second balls 56 that can be used to improve the smoothness when the third rail 26 and the second rail 24 displace relative to each other.

[0035] The first supporting device 28 extends beyond a first end portion 22a of the first rail 22 by a predetermined longitudinal distance X.

[0036] Preferably, the first supporting device 28 includes a reinforcing member 58 and a first bracket 60. The reinforcing member 58 is located on a back side of the first rail 22, and the direction of the reinforcing member 58 is substantially longitudinal. Here, a part of the reinforcing member 58 is connected to the back side of the first rail 22 (the back side is, for example, a side opposite to the first channel 38), and taking the example that other parts of the reinforcing member 58 extend beyond the first end portion 22a of the first rail 22 by the predetermined longitudinal distance X, since a part of the reinforcing member 58 is connected (such as fixedly connected, but not limited) to the first rail 22, therefore, it helps to improve the local structural strength of the first rail 22; on the other hand, the reinforcing member 58 has a first end portion 58a and a second end portion 58b that are opposite to each other, such as a front end portion and a rear end portion, but are not limited in implementation. The first bracket 60 is connected (such as fixedly connected, but not limited) to the reinforcing member 58, and the first bracket 60 is located adjacent to the first end portion 58a of the reinforcing member 58. The first supporting device 28 further includes at least one first mounting member 62 disposed on the first bracket 60.

[0037] Preferably, the reinforcing member 58 includes a first portion 64a, a second portion 64b, and a longitudinal portion 66 connected between the first portion 64a and the second portion 64b. The first portion 64a, the second portion 64b, and the longitudinal portion 66 of the reinforcing member 58 together define a reinforcing channel 68 (this part can be referred to in conjunction with Figure 5 ), and the reinforcing channel 68 is located between the first end portion 58a and the second end portion 58b.

[0038] Preferably, the second supporting device 32 can move relative to the first supporting device 28. Further, the second supporting device 32 includes a second bracket 71, an extension bracket 70 (this part can be referred to in conjunction with Figure 5 ), and at least one second mounting member 72. Among them, the extension bracket 70 is movably installed in the reinforcing channel 68 of the reinforcing member 58, and the second supporting device 32 can be adjusted in position relative to the first supporting device 28 through the extension bracket 70. On the other hand, the at least one second mounting member 72 is disposed on the second bracket 71.

[0039] Preferably, the first support device 28 further includes a support portion 74. For example, the support portion 74 is disposed on the first bracket 60, and the support portion 74 extends laterally (or sidewardly) relative to the reinforcement member 58.

[0040] The at least one support member 30 is disposed on the second rail 24.

[0041] Preferably, the slide rail assembly 20 further includes an auxiliary member 76 connected to the second rail 24, and the at least one support member 30 is rotatably mounted on the auxiliary member 76. For example, the at least one support member 30 is mounted to the auxiliary member 76 through a shaft 78.

[0042] Preferably, the auxiliary member 76 is connected (e.g., fixedly connected) to the second rail 24, and the auxiliary member 76 is located adjacent to the first end portion 24a of the second rail 24.

[0043] Preferably, when the second rail 24 is retracted relative to the first rail 22 (as Figure 2 shown), the first end portion 24a of the second rail 24 extends beyond the first end portion 22a of the first rail 22, which helps the auxiliary member 76 to be connected to the second rail 24.

[0044] Preferably, the position of the at least one support member 30 corresponds to one of the first part 64a and the second part 64b of the reinforcement member 58. The at least one support member 30 and at least one of the first part 64a and the second part 64b of the reinforcement member 58 include an arc-shaped profile. Herein, taking the at least one support member 30 as a rolling member or a smooth member including the arc-shaped profile as an example, in practice, it can be a spherical or cylindrical object such as a roller or a ball, but is not limited thereto; and the position of the at least one support member 30 corresponds to one of the first part 64a and the second part 64b of the reinforcement member 58. Herein, taking the first part 64a of the reinforcement member 58 as an example. The first part 64a of the reinforcement member 58 includes a linear segment substantially arranged longitudinally, and the linear segment is used to contact and support the arc-shaped profile.

[0045] Preferably, the at least one support member 30 is made of plastic material.

[0046] Preferably, the auxiliary member 76 has a space 80 (such as an opening or a notch), and the at least one support member 30 corresponds to the first part 64a of the reinforcement member 58 through the space 80.

[0047] As Figure 2 and Figure 3 shown, the slide rail assembly 20 can be in a retracted state (as Figure 2 shown, both the second rail 24 and the third rail 26 are retracted relative to the first rail 22). Further, the second rail 24 can be retracted relative to the first rail 22 from a retracted position R (as Figure 2as shown, longitudinally displace in an opening direction D1 to an extended position E (such as Figure 3 as shown), and the third rail 26 can longitudinally displace in the opening direction D1 relative to the second rail 24 in the extended position E to an open position K, so that the slide rail assembly 20 is in an extended state. Wherein, when the second rail 24 is in the extended position E relative to the first rail 22, the first end 24a of the second rail 24 extends beyond the first end 22a of the first rail 22; when the third rail 26 is in the open position K relative to the second rail 24, the first end 26a of the third rail 26 extends beyond the first end 24a of the second rail 24 (such as Figure 3 as shown).

[0048] Preferably, when the slide rail assembly 20 is in the retracted state, the first end 26a of the third rail 26 is located between the at least one first mounting member 62 and the at least one second mounting member 72.

[0049] Preferably, when the slide rail assembly 20 is in the extended state (such as Figure 3 as shown), the first end 26a of the third rail 26 extends beyond the at least one first mounting member 62 by a predetermined distance.

[0050] It should be noted that since the first support device 28 extends beyond the first end 22a of the first rail 22 by the predetermined longitudinal distance X, when the second rail 24 longitudinally displaces from the retracted position R to the extended position E in the opening direction D1 relative to the first rail 22, the at least one support member 30 can contact and support along the first portion 64a of the reinforcing member 58 and have a mutual support relationship; or, when the second rail 24 longitudinally displaces from the extended position E to a retracting direction D2 to the retracted position R relative to the first rail 22, the at least one support member 30 can contact and support along the first portion 64a of the reinforcing member 58. Wherein, since the at least one support member 30 and the first portion 64a of the reinforcing member 58 are in a support manner of mutual contact between an arc profile and a linear segment, it helps to reduce the frictional resistance.

[0051] For example, by the at least one support member 30 being able to roll along the first portion 64a of the reinforcing member 58, the frictional force when the second rail 24 displaces relative to the first rail 22 can be improved or reduced, which helps to ensure the smoothness when the second rail 24 displaces between the retracted position R and the extended position E relative to the first rail 22, and enables the second rail 24 (or the third rail 26) to obtain an additional support effect relative to the first rail 22. For the user, this can effectively reduce the pulling force or pushing force applied to the slide rail, that is, the user can easily or labor-savingly complete the opening or closing action of the slide rail assembly 20.

[0052] such as Figure 4 and Figure 5As shown, a carrier 82 can be installed on a frame through a pair of slide rail assemblies 20. The carrier 82 (such as an electronic device or a device housing) includes a first predetermined portion 82a and a second predetermined portion 82b. The first predetermined portion 82a has a first width W1, and the second predetermined portion 82b has a second width W2 that is less than the first width W1. The frame includes a pair of first columns 84a and a pair of second columns 84b. The first rail 22 of each slide rail assembly 20 can be installed on the first column 84a through the first support device 28, and the first rail 22 can be installed on the second column 84b through the second support device 32.

[0053] Preferably, the first rail 22 of each slide rail assembly 20 can be installed on the first column 84a and the second column 84b through the at least one first mounting member 62 and the at least one second mounting member 72.

[0054] It is worth mentioning that due to the special shape of the carrier 82 (such as a shape that is wider at the front and narrower at the back), the third rail 26 of each slide rail assembly 20 can only be partially installed on the side 86 of the second predetermined portion 82b of the carrier 82. When each slide rail assembly 20 is in the retracted state, the first ends 22a, 24a, and 26a of the first rail 22, the second rail 24, and the third rail 26 substantially correspond to the middle position of the carrier 82. It should be noted that since the second rail 24 of this embodiment can be supported in contact with the reinforcing member 58 (the first portion 64a thereof) through the at least one support member 30. In particular, when the slide rail assembly 20 is in the retracted position, the position of the at least one support member 30 is generally located at the middle position on both sides of the carrier 82. Therefore, it helps to improve the support ability of the third rail 26 and the second rail 24 for the carrier 82 with a special shape to a certain extent.

[0055] As Figure 6 and Figure 7 shown, the user can apply a pulling force in the opening direction D1 to the carrier 82, so that the slide rail assembly 20 can be actuated from the retracted state (as Figure 6 shown) to the extended state (as Figure 7 shown), so that the carrier 82 can be displaced from inside the frame to outside the frame. Alternatively, the user can apply a pushing force in the retracting direction D2 to the carrier 82, so that the slide rail assembly 20 can be actuated from the extended state (as Figure 7 shown) to the retracted state (as Figure 6 shown), so that the carrier 82 can be displaced from outside the frame to inside the frame.

[0056] It should be noted that when the slide rail assembly 20 is in the extended state, the first end 26a of the third rail 26 extends beyond the at least one first mounting member 62 and the first column 84a by the predetermined distance (asFigure 7 As shown, if the weight of the other parts of the carrier 82 (including the first predetermined part 82a) not supported by the third rail 26 is heavy enough, it may affect the supporting force between the third rail 26 and the second rail 24. However, since the second rail 24 of this embodiment can be supported in contact along the reinforcing member 58 (the first part 64a thereof) by the at least one support member 30, it helps to improve the supporting ability of the third rail 26 and the second rail 24 to maintain a certain degree of support for the carrier 82 with a special shape.

[0057] In addition, by adopting the way that the at least one support member 30 and the reinforcing member 58 (the first part 64a thereof) are in contact support with an arc profile and a linear segment, the friction when the second rail 24 displaces relative to the first rail 22 can be improved or reduced, and a labor-saving effect can be produced. For example, when the user applies the pulling force to the carrier 82 to pull the second rail 24 (and the third rail 26) from the retracted position R relative to the first rail 22 in the opening direction D1, the pulling force of the second rail 24 relative to the first rail 22 can be reduced; or, when the user applies the pushing force to the carrier 82 to push the second rail 24 (and the third rail 26) from the extended position E (opening position K) relative to the first rail 22 in the retracting direction D2, the pushing force of the second rail 24 relative to the first rail 22 can be reduced. For the user, even if the third rail 26 can only be partially installed on the second predetermined part 82b (side 86) of the carrier 82, the user can still easily or labor-savingly complete the opening or closing action of the slide rail assembly 20.

[0058] As Figure 8 shown, the two opposite sides 86 of the second predetermined part 82b of the carrier 82 are installed on the third rail 26 of each slide rail assembly 20. Wherein, when the slide rail assembly 20 is in the retracted state and / or the extended state, the bottom surface 88 of the carrier 82 can also be supported by the support part 74. Accordingly, when the carrier 82 is displaced from inside the frame to outside the frame, or from outside the frame to inside the frame, it can be effectively supported to ensure the smoothness of the relative displacement between the slide rails of the slide rail assembly 20. It also helps the user to easily or labor-savingly complete the opening or closing action of the slide rail assembly 20.

[0059] As Figure 9 and Figure 10Illustrate the slide rail assembly 200 of the second embodiment of the present invention. The substantial difference between the slide rail assembly 200 of this second embodiment and the slide rail assembly 20 of the first embodiment lies in that: the first bracket 202 of the slide rail assembly 200 includes an extension portion 204, the at least one support member 206 is disposed on the auxiliary member 208, and the at least one support member 206 corresponds to the extension portion 204 of the first bracket 202. The extension portion 204 of the first bracket 202 includes a linear segment substantially arranged longitudinally, and the linear segment is used to contact and support the arc-shaped contour of the at least one support member 206.

[0060] Furthermore, when the second rail 210 is longitudinally displaced relative to the first rail 212 from the retracted position R to the extended position E in the opening direction D1, the at least one support member 206 contacts and supports along the extension portion 204 of the first bracket 202; or, when the second rail 210 is displaced relative to the first rail 212 from the extended position E to the retracted position R in the retracting direction D2, the at least one support member 206 contacts and supports along the extension portion 204 of the first bracket 202. According to this configuration, the same technical effects as those of the first embodiment can be achieved substantially. For example, by the way that the at least one support member 206 and the extension portion 204 of the first bracket 202 adopt the contact support mode of the arc-shaped contour and the linear segment, the friction when the second rail 210 is displaced relative to the first rail 212 can be improved or reduced, which can produce a labor-saving effect for the user. Further, when the user applies the pulling force to the above-mentioned load (not shown) carried by the third rail 214, so that the second rail 210 (and the third rail 214) is pulled out from the retracted position R relative to the first rail 212 in the opening direction D1, the pulling force of the second rail 210 relative to the first rail 212 can be reduced; or, when the user applies the pushing force to the load, so that the second rail 210 (and the third rail 214) is pushed into the retracted position R from the extended position E (opening position K) relative to the first rail 212 in the retracting direction D2, the pushing force of the second rail 210 relative to the first rail 212 can be reduced. This can enable the user to easily or labor-savingly complete the opening or closing action of the slide rail assembly 200.

[0061] Such as Figure 11 、 Figure 12 and Figure 13 Illustrate the slide rail assembly 300 of the third embodiment of the present invention. The substantial difference between the slide rail assembly 300 of this third embodiment and the slide rail assemblies 20 of the first and second embodiments lies in that: the at least one support member 302 is disposed on the first bracket 306 of the first support device 304; when the slide rail assembly 300 is in an extended state (such as Figure 12 or Figure 13As shown, the at least one support member 302 is located at the bottom of one of the second rail 308 and the third rail 310, and the at least one support member 302 is used to support the bottom surface 312 of the carrier 82 (as Figure 13 shown). Since the at least one support member 302 and the bottom surface 312 of the carrier 82 are in contact and supported by an arc-shaped profile and a linear segment, it helps to reduce the frictional resistance, and the at least one support member 302 can be used to support the carrier 82. For the user, even if the third rail 310 can only be partially installed on the side 86 of the second predetermined portion 82b of the carrier 82, the user can still easily or labor-savingly complete the opening or closing operation of the slide rail assembly 20.

[0062] As Figure 14 , Figure 15 , Figure 16 and Figure 17 FIG. shows a slide rail assembly 400 according to a fourth embodiment of the present invention. The difference between the slide rail assembly 400 of the fourth embodiment and the slide rail assembly 20 of the first embodiment is substantially that: at least another support member 404 is further provided on the auxiliary member 403 on the second rail 402, and the at least another support member 404 is used to cooperate with the third rail 406. Preferably, a working member 408 is further provided on the auxiliary member 402.

[0063] Furthermore, when the second rail 402 is displaced from the closed position R (as Figure 14 shown) to the extended position E in the opening direction D1 relative to the first rail 401 (as Figure 15 shown), it can be supported by the support member 410 contacting the first part 415a of the reinforcing member 414 of the first support device 412. And when the third rail 406 is displaced from the extended position E of the second rail 402 to the open position K in the opening direction D1, the second wall 417b of the third rail 406 (as Figure 15 or Figure 16 shown) can be supported by the another support member 404. Vice versa, when the second rail 402 is displaced from the extended position E (as Figure 15 shown) to the closed position R in the closing direction D2 relative to the first rail 401, it can be supported by the support member 410 contacting the first part 415a of the reinforcing member 414 of the first support device 412. And when the third rail 406 is displaced from the open position K (as Figure 15 shown) of the second rail 402 in the extended position E to the closing direction D2, the second wall 417b of the third rail 406 can be supported by the another support member 404. Preferably, the another support member 404 and the support member 410 are substantially both a rolling member or a smooth member. In practice, it can be a spherical or cylindrical object such as a roller or a ball, but not limited thereto.

[0064] According to this configuration, the friction when the second rail 402 displaces relative to the first rail 401 can be improved or reduced by the support member 410; on the other hand, the friction when the third rail 406 displaces relative to the second rail 402 can be improved or reduced by another support member 404.

[0065] Preferably, the auxiliary member 403 has a connecting portion, and the connecting portion has a first connecting section 407a and a second connecting section 407b. The support member 410 is mounted adjacent to the first connecting section 407a through the shaft 405, and the working member 408 is mounted adjacent to the second connecting section 407b (as Figure 16 shown in Figure 17 ).

[0066] Preferably, the working member 408 is an elastic member, and the working member 408 has a fastening portion 416 and a guiding portion 418 connecting the fastening portion 416 (as Figure 17 shown in Figure 16 ). The guiding portion 418 includes an inclined surface or a curved surface, and there is a locking space 420 between the fastening portion 416 and the second connecting section 407b of the auxiliary member 403. When the second rail 402 is in the extended position E relative to the first rail 401, the fastening portion 416 of the working member 408 can fasten one side portion 424 of the first bracket 422 through the locking space 420 to limit the lateral movement of the second rail 402 in the extended position E, for example, to prevent the second rail 402 from swaying left and right due to an external force (as Figure 17 shown in

[0067] Preferably, the support member 410 and the other support member 404 are respectively adjacent to the first wall 426a and the second wall 426b of the second rail 402, and are close to the first end portion 402a of the second rail 402 (as Figure 14 shown in

[0068] Although the present invention has been described with reference to the current specific embodiments, those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention, and various equivalent changes and modifications can be made without departing from the spirit of the present invention. Therefore, as long as the changes and variations of the above embodiments are within the scope of the spirit of the present invention, they will fall within the scope of the claims of this application.

Claims

1. A slide rail assembly, comprising a first rail, a second rail, a third rail, a first support device and at least one support member, Characterized in that: The first rail has a first end portion and a second end portion that are opposite to each other; The second rail can be longitudinally displaced relative to the first rail; The third rail can be longitudinally displaced relative to the second rail; The first support device extends beyond the first end portion of the first rail by a predetermined longitudinal distance; and The at least one support member is provided on one of the second rail and the first support device; The first support device includes a reinforcement member and a first bracket. The reinforcement member is located on a back side of the first rail, and the reinforcement member extends beyond the first end portion of the first rail by the predetermined longitudinal distance; the first bracket is connected to the reinforcement member; The reinforcement member includes a first portion, a second portion and a longitudinal portion connected between the first portion and the second portion; the at least one support member is provided on the second rail; when the second rail longitudinally displaces from a closed position to an extended position in an opening direction relative to the first rail, the at least one support member contacts and supports along one of the first portion and the second portion of the reinforcement member; when the second rail displaces from the extended position to the closed position in a closing direction relative to the first rail, the at least one support member contacts and supports along one of the first portion and the second portion of the reinforcement member; It further includes an auxiliary member connected to the second rail. The at least one support member is rotatably mounted on the auxiliary member. The second rail has a first end portion and a second end portion that are opposite to each other, and the auxiliary member is connected to adjacent to the first end portion of the second rail.

2. The slide rail assembly according to claim 1, Characterized in that, At least one of the at least one support member and one of the first portion and the second portion of the reinforcement member includes an arc-shaped profile.

3. The slide rail assembly according to claim 1, Characterized in that, It further includes at least another support member provided on the second rail. When the third rail displaces to an open position in the opening direction relative to the second rail in the extended position, the at least another support member can provide contact support for the third rail; when the third rail displaces from the open position to the closing direction relative to the second rail in the extended position, the at least another support member can provide contact support for the third rail.

4. The slide rail assembly according to claim 1, Characterized in that, The at least one support member is provided on the first bracket of the first support device; when the slide rail assembly is in an extended state, the at least one support member is located at a bottom of one of the second rail and the third rail, and the at least one support member is rotatably mounted on the first bracket.

5. The slide rail assembly according to claim 1, Characterized in that, It further includes a second support device that can move relative to the first support device. The first support device and the second support device respectively include at least one first mounting member and at least one second mounting member. The at least one first mounting member and the at least one second mounting member are used to mount the first rail to a first column and a second column of a frame.

6. The slide rail assembly according to claim 1, Characterized in that, The auxiliary member is further provided with a working member which has a latching portion and a guiding portion connecting the latching portion. The guiding portion includes an inclined surface or a curved surface. There is a latching space between the latching portion and the auxiliary member. When the second rail is in an extended position relative to the first rail, the latching portion of the working member can latch one side portion of the first bracket through the latching space.

7. A slide rail assembly, comprising a first rail, a second rail, a third rail, a first support device and at least one support member, Characterized in that: The first rail has a first end portion and a second end portion which are opposite to each other; The second rail can be longitudinally displaced relative to the first rail; The third rail can be longitudinally displaced relative to the second rail; The first support device extends beyond the first end portion of the first rail by a predetermined longitudinal distance; and The at least one support member is arranged on one of the second rail and the first support device; The first support device includes a reinforcing member and a first bracket. The reinforcing member is located on a back side of the first rail, and the reinforcing member extends beyond the first end portion of the first rail by the predetermined longitudinal distance; the first bracket is connected to the reinforcing member; The first bracket includes an extension portion, and the trend of the extension portion is substantially longitudinal; the at least one support member is arranged on the second rail; when the second rail longitudinally displaces from a retracted position to an extended position in an opening direction relative to the first rail, the at least one support member contacts and supports along the extension portion of the first bracket; when the second rail displaces from the extended position to the retracted position in a retracting direction relative to the first rail, the at least one support member contacts and supports along the extension portion of the first bracket; It further includes an auxiliary member connected to the second rail. The at least one support member is rotatably mounted on the auxiliary member. The second rail has a first end portion and a second end portion which are opposite to each other, and the auxiliary member is connected to adjacent to the first end portion of the second rail.

8. The slide rail assembly according to claim 7, Characterized in that, At least one of the at least one support member and the extension portion of the first bracket includes an arc-shaped contour.

9. The slide rail assembly according to claim 7, Characterized in that, It further includes at least another support member arranged on the second rail. When the third rail displaces from the extended position of the second rail to an opening position in the opening direction, the at least another support member can provide contact support for the third rail; when the third rail displaces from the opening position to the retracting direction relative to the second rail in the extended position, the at least another support member can provide contact support for the third rail.

10. The slide rail assembly according to claim 7, Characterized in that, The at least one support member is arranged on the first bracket of the first support device; when the slide rail assembly is in an extended state, the at least one support member is located at a bottom of one of the second rail and the third rail, and the at least one support member is rotatably mounted on the first bracket.

11. The slide rail assembly according to claim 7, Characterized in that, It further includes a second supporting device movable relative to the first supporting device. The first supporting device and the second supporting device respectively include at least one first mounting member and at least one second mounting member. The at least one first mounting member and the at least one second mounting member are used to mount the first rail to a first column and a second column of a frame.

12. The slide rail assembly according to claim 7, wherein, a working member is further arranged on the auxiliary member. The working member has a buckling portion and a guiding portion connected to the buckling portion. The guiding portion includes an inclined surface or a curved surface. There is a locking space between the buckling portion and the auxiliary member. When the second rail is in an extended position relative to the first rail, the buckling portion of the working member can buckle one side portion of the first bracket through the locking space.

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