Slide rail assembly

Abstract

To provide a slide rail assembly having high operation reliability.SOLUTION: Provided is a slide rail assembly 20 including a first rail 22, a second rail 24, an auxiliary slide device 26, an auxiliary member 27, and a holding member 28. The second rail 24 is movably attached to a channel 32 of the first rail 22. The auxiliary slide device 26 is movably attached to a part between the first rail 22 and the second rail 24. The auxiliary member 27 is connected to the auxiliary slide device 26 and includes an engagement part 42. The holding member 28 is arranged in the first rail 22 and includes an elastic part 50 having a predetermined portion 52. The auxiliary member 27 and the auxiliary slide device 26 are formed of a first material and a second material, respectively. When the second rail 24 is displaced along an opening direction D1 with respect to the first rail 22 and is detached from the first rail 22, the auxiliary slide device 26 is located at a predetermined position K by engagement between the engagement part 42 and the predetermined portion 52.SELECTED DRAWING: Figure 2A

Description

[Technical Field]

[0001] The present invention relates to a slide rail assembly according to the preamble of claim 1 . [Background technology]

[0002] Patent Document 1 discloses an auxiliary slide positioning mechanism for a drawer slide. The auxiliary slide positioning mechanism includes a first rail, a second rail, an auxiliary slide member, and a positioning member. The auxiliary slide member is movably mounted between the first rail and the second rail. An engagement slot structure is disposed at the front end of the auxiliary slide member. An engagement hook is disposed adjacent to the underside of the engagement slot. The positioning member is disposed adjacent to the entrance of the channel of the first rail. When the second rail is displaced along the opening direction and removed from the channel of the first rail, the positioning member engages with the engagement hook of the auxiliary slide member via an elastic hook rod to restrict displacement of the auxiliary slide member relative to the first rail, thereby promoting support and / or stability during insertion of the second rail from outside the channel of the first rail into the channel of the first rail. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Patent No. 6,851,773 [Patent Document 2] U.S. Patent No. 7,648,214 [Patent Document 3] U.S. Patent No. 9,279,451

[0004] In Patent Document 1, the engagement hook and the auxiliary slide member are integrally formed with each other and made of the same material. However, to meet various requirements, it is an important issue to provide a slide rail assembly with higher operational reliability. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a slide rail assembly with higher operational reliability.

[0006] This is achieved by a slide rail assembly according to claim 1. The dependent claims relate to corresponding further developments and improvements.

[0007] As will become more clearly apparent from the detailed description below, the slide rail assembly of the present invention includes a first rail, a second rail, an auxiliary slide device, an auxiliary member, and a retaining member. The first rail includes a channel. The second rail is movably mounted in the channel of the first rail and is longitudinally displaceable relative to the first rail. The auxiliary slide device is movably mounted between the first rail and the second rail. The auxiliary member is connected to the auxiliary slide device. The auxiliary member includes an engaging portion. The retaining member is disposed on the first rail. The retaining member includes an elastic portion, the elastic portion including a predetermined portion. The auxiliary member is made of a first material, and the auxiliary slide device is made of a second material. When the second rail is displaced along the opening direction relative to the first rail to remove it from the channel of the first rail, the auxiliary slide device is positioned in a predetermined position due to engagement between the engaging portion of the auxiliary member and the predetermined portion of the elastic portion of the retaining member.

[0008] In summary, the present invention is more reliable in its operation of holding the auxiliary slide device in place relative to the first rail.

[0009] These and other objects of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings. [Brief explanation of the drawings]

[0010] The invention will now be further described, by way of example only, with reference to the accompanying drawings in which: [Figure 1] FIG. 1 is a schematic diagram of a slide rail assembly according to an embodiment of the present invention. [Figure 2A] FIG. 2A is an exploded view of a slide rail assembly according to an embodiment of the present invention. [Figure 2B] FIG. 2B is a diagram of a retaining member according to an embodiment of the present invention. [Figure 3A] FIG. 3A is a partial enlarged view of a slide rail assembly with an auxiliary member removed from the auxiliary slide device, according to an embodiment of the present invention. [Figure 3B] FIG. 3B is a partial enlarged view of the slide rail assembly with the auxiliary member connected to the auxiliary slide device in accordance with an embodiment of the present invention. [Figure 4] FIG. 4 is a partial view of a slide rail assembly according to an embodiment of the present invention. [Figure 5] FIG. 5 is a partial view of a slide rail assembly with the second rail displaced relative to the first rail along an opening direction, in accordance with an embodiment of the present invention. [Figure 6] FIG. 6 is a diagram of a slide rail assembly according to an embodiment of the present invention with the second rail displaced relative to the first rail along the opening direction from the position shown in FIG. [Figure 7] FIG. 7 is a diagram of a slide rail assembly according to an embodiment of the present invention with the second rail displaced relative to the first rail along the open direction from the position shown in FIG. [Figure 8] FIG. 8 is a diagram of a slide rail assembly with the second rail detached from the first rail and the first rail in an extended position relative to the third rail, according to an embodiment of the invention. [Figure 9] FIG. 9 is a diagram of a slide rail assembly with a second rail inserted into a channel of the first rail from outside the channel of the first rail, according to an embodiment of the invention. [Figure 10] FIG. 10 is a diagram of a slide rail assembly according to an embodiment of the present invention with the second rail displaced relative to the first rail along a retracted direction from the position shown in FIG. [Figure 11]FIG. 11 is a view of the slide rail assembly with the second rail displaced relative to the first rail along a retracted direction from the position shown in FIG. [Figure 12] 12 is a view of a slide rail assembly when the second rail is displaced relative to the first rail along the retraction direction from the position shown in FIG. 11, in accordance with an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings, which form a part hereof, and which show, by way of illustration, specific embodiments in which the invention may be practiced. In this regard, directional terms such as "up," "down," "left," "right," "front," "rear," and the like are used with reference to the orientation of the illustrated figures. Components of the present invention can be positioned in many different orientations. As such, the directional terminology is used for purposes of illustration and not of limitation. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as limiting. Also, unless specified, the term "connected" is intended to mean either an indirect or direct mechanical connection. Thus, when a first device is connected to a second device, the connection may be via a direct mechanical connection or via an indirect mechanical connection via other devices and connections.

[0012] As shown in FIGS. 1 and 2A , the slide rail assembly 20 includes a first rail 22, a second rail 24, an auxiliary slide device 26, an auxiliary member 27, and a retaining member 28. Preferably, the slide rail assembly 20 further includes a third rail 30. The first rail 22 is movably mounted between the third rail 30 and the second rail 24. That is, the first rail 22, the second rail 24, and the third rail 30 may be an intermediate rail, an inner rail, and an outer rail, respectively. In this embodiment, as an example, the longitudinal direction is defined by the length direction of the slide rail, e.g., the first rail 22, the second rail 24, or the third rail 30, and is parallel to the X-axis. The lateral direction is defined by the lateral or width direction of the slide rail, e.g., the first rail 22, the second rail 24, or the third rail 30, and is parallel to the Y-axis. The vertical direction is defined by the height direction of the slide rails, for example, the first rail 22, the second rail 24, and the third rail 30, and is parallel to the Z axis.

[0013] The first rail 22 includes a channel 32. The first rail 22 preferably 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 cooperate to define the channel 32 of the first rail 22. The first rail 22 has a front end 22a and a rear end 22b.

[0014] The second rail 24 is movably mounted in the channel 32 of the first rail 22 and is displaceable longitudinally, i.e., along the longitudinal direction, relative to the first rail 22. The second rail 24 includes a first wall 38a, a second wall 38b, and a longitudinal wall 40 connected between the first wall 38a and the second wall 38b of the second rail 24. The second rail 24 further includes a release portion 37. The release portion 37 includes a first guide structure 39a and a second guide structure 39b. In this embodiment, as an example, the release portion 37 may be a protrusion, and the first guide structure 39a and the second guide structure 39b may be inclined surfaces or arc surfaces. However, the present invention is not limited thereto.

[0015] The auxiliary slide device 26 is movably mounted between the first rail 22 and the second rail 24. The auxiliary slide device 26 preferably further includes a first portion 44a, a second portion 44b, and a longitudinal portion 46 connected between the first portion 44a and the second portion 44b of the auxiliary slide device 26. The first portion 44a, the second portion 44b, and the longitudinal portion 46 of the auxiliary slide device 26 are located at positions corresponding to the first wall 34a, the second wall 34b, and the longitudinal wall 36 of the first rail 22, respectively. A plurality of rolling balls 48 are disposed on the first portion 44a and the second portion 44b of the auxiliary slide device 26 and are configured to support the first wall 34a and the second wall 34b of the first rail 22 and the first wall 38a and the second wall 38b of the second rail 24 to promote smooth displacement of the second rail 24 relative to the first rail 22.

[0016] 2A to 4, the auxiliary member 27 is configured to be connected, for example, fixedly connected, to the auxiliary sliding device 26. The auxiliary member 27 includes an engaging portion 42. In this embodiment, as an example, the engaging portion 42 may be an engaging hook. Furthermore, the auxiliary member 27 is made of a first material, and the auxiliary sliding device 26 is made of a second material different from the first material.

[0017] The auxiliary member 27 may be a heat-treated member, and the first and second materials may be carbon steel and galvanized steel, respectively. For example, the first material may be SK5 steel, and the second material may be SECC electrogalvanized steel. However, the present invention is not limited thereto.

[0018] Preferably, the hardness of the first material is greater than the hardness of the second material.

[0019] The auxiliary sliding device 26 preferably has a first end 26a and a second end 26b opposite the first end 26a. In this embodiment, as an example, the first end 26a and the second end 26b may be a front end and a rear end. As shown in FIG. 2A , the auxiliary member 27 is connected to the auxiliary sliding device 26 and is located adjacent to the first end 26a of the auxiliary sliding device 26.

[0020] 3A and 3B, the auxiliary slide device 26 preferably further includes a recess 74. The auxiliary member 27 further includes a connecting portion 76 and an extending portion 78. The connecting portion 76 is configured to be connected to the recess 74. The extending portion 78 extends from the connecting portion 76 substantially along the longitudinal direction, and the engaging portion 42 is disposed on the extending portion 78.

[0021] The auxiliary sliding device 26 preferably includes a first surface 80 and a second surface 82. In this embodiment, for example, the recess 74 includes the second surface 82. As shown in FIGS. 3A and 3B , the lateral distance between the first surface 80 and the longitudinal wall 36 of the first rail 22 is greater than the lateral distance between the second surface 82 and the longitudinal wall 36 of the first rail 22 by a lateral difference M. The connecting portion 76 of the auxiliary member 27 is configured to be connected to the second surface 82 to reduce or eliminate the lateral difference between the surface 84 of the auxiliary member 27 and the first surface 80 of the auxiliary sliding device 26 when the auxiliary member 27 is connected to the auxiliary sliding device 26.

[0022] As shown in Figures 2A, 2B, 4, and 5, the retaining member 28 is disposed on the longitudinal wall 36 of the first rail 22. The retaining member 28 is located adjacent to the front end 22a of the first rail 22. The retaining member 28 includes an elastic portion 50. In this embodiment, as an example, the elastic portion 50 may be an elastic arm. However, the present invention is not limited to this embodiment. The elastic portion 50 includes a predetermined portion 52. The longitudinal wall 36 of the first rail 22 includes a suppressing portion 54.

[0023] Preferably, one of the predetermined portion 52 and the suppressing portion 54 is a receiving structure, and the other of the predetermined portion 52 and the suppressing portion 54 is a protrusion configured to extend into the receiving structure. As shown in FIGS. 4 and 5 , in this embodiment, the predetermined portion 52 may be a receiving structure, and the suppressing portion 54 may be a protrusion configured to extend into the receiving structure. However, the present invention is not limited to this embodiment. The receiving structure may be a hole structure defined by multiple walls. For example, the elastic portion 50 may include a first hole wall 56a, a second hole wall 56b, a third hole wall 56c, and a fourth hole wall 56d that cooperate to form a receiving structure having a predetermined contour shape.

[0024] The retaining member 28 preferably further includes a body portion 58 that is connected, e.g., fixedly connected, to the longitudinal wall 36 of the first rail 22. The resilient portion 50 further includes a first end section 60 and a second end section 62. The first end section 60 of the resilient portion 50 is connected to the body portion 58 of the retaining member 28. The second end section 62 of the resilient portion 50 extends from the first end section 60 of the resilient portion 50 and is resiliently movable relative to the first end section 60 of the resilient portion 50. The predetermined portion 52 is disposed in the second end section 62 of the resilient portion 50.

[0025] The second end section 62 of the elastic portion 50 preferably includes a first guide portion 64 and a second guide portion 66. The predetermined portion 52 is disposed between the first guide portion 64 and the second guide portion 66. In this embodiment, as an example, the first guide portion 64 and the second guide portion 66 may be inclined surfaces or arcuate surfaces.

[0026] The main body portion 58 of the retaining member 28 preferably includes a support section 68 configured to support the elastic portion 50. In this embodiment, as an example, the support section 68 is bent relative to the main body portion 58 and configured to support the bottom of the elastic portion 50. The support section 68 is configured to support the elastic portion 50 to increase the stability of the elastic portion 50 during movement. In addition, as shown in FIG. 2B , the elastic portion 50 and the support section 68 can be formed integrally with the main body portion 58 so that the retaining member 28 has a unitary structure.

[0027] 5, the engagement portion 42 of the auxiliary member 27 includes a guide section 70. The guide section 70 may be an inclined surface or an arcuate surface. Furthermore, when the auxiliary member 27 is located in the position shown in FIG. 5, the elastic portion 50 of the holding member 28 is in the first state S1.

[0028] When the second rail 24 is displaced a predetermined distance from the retracted position relative to the first rail 22 along the opening direction D1, the release portion 37 can overcome the elastic portion 50 due to the abutment between the first guide structure 39a of the release portion 37 and the first guide portion 64 of the elastic portion 50, and the auxiliary slide device 26 can be displaced along the opening direction D1 in accordance with the opening displacement of the second rail 24, driving the guide section 70 of the engagement portion 42 of the auxiliary member 27 to abut against the first guide portion 64 of the elastic portion 50 of the holding member 28.

[0029] Furthermore, if the first guide portion 64 of the elastic portion 50 is subjected to excessive force by the first guide structure 39a of the release portion 37 or the guide section 70 of the engagement portion 42 of the auxiliary member 27 due to a sudden opening displacement of the second rail 24, the suppressing portion 54 can prevent the second end section 62 of the elastic portion 50 from deforming, moving, or bending in a specific direction. For example, as shown in FIG. 5 , the suppressing portion 54 can abut against the fourth hole wall 56d to prevent the second end section 62 of the elastic portion 50 from deforming, moving, or bending in the lateral direction T, where the lateral direction T is a lateral direction along the Y-axis of the first rail 22.

[0030] When the second rail 24 is displaced from the position shown in FIG. 5 to the position shown in FIG. 6 along the opening direction D1 relative to the first rail 22, the guide section 70 of the engagement portion 42 of the auxiliary member 27 abuts against the first guide portion 64 of the elastic portion 50 of the holding member 28, driving the elastic portion 50 of the holding member 28 and moving it from the first state S1 shown in FIG. 5 to the second state S2 shown in FIG. 6 so that the elastic portion 50 elastically deforms and accumulates elastic force.

[0031] As shown in Figures 7 and 8, when the second rail 24 is displaced relative to the first rail 22 and removed from the channel 32 of the first rail 22, the auxiliary slide device 26 can move to a predetermined position K adjacent to the front end 22a of the first rail 22, and the engagement portion 42 of the auxiliary member 27 can engage with a predetermined portion 52 of the elastic portion 50 of the retaining member 28.

[0032] Specifically, as shown in FIG. 7, when the auxiliary slide device 26 is located at a predetermined position K, the engagement portion 42 of the auxiliary member 27 aligns with a predetermined portion 52 of the elastic portion 50 so that the elastic force of the elastic portion 50 is released and the elastic portion 50 moves from the second state S2 to the first state S1, for example, a locked state, and the engagement portion 42 of the auxiliary member 27 extends into the predetermined portion 52 of the elastic portion 50 of the retaining member 28 and abuts against the first hole wall 56a to prevent the auxiliary slide device 26 from displacing from the predetermined position K along the retraction direction D2 opposite to the opening direction D1 relative to the first rail 22, and / or abuts against the second hole wall 56b to prevent the auxiliary slide device 26 from displacing from the predetermined position K along the opening direction D1 relative to the first rail 22. In addition, when the auxiliary slide device 26 is positioned at a predetermined position K and the engagement portion 42 engages with a predetermined portion 52 of the elastic portion 50 of the retaining member 28, the engagement portion 42 is configured to be offset left and right or laterally relative to the suppression portion 54 to prevent interference between the engagement portion 42 and the suppression portion 54.

[0033] 9 , when the auxiliary slide device 26 is located at the predetermined position K, the elastic portion 50 of the holding member 28 is in the first state S1, causing the predetermined portion 52 to engage with the engaging portion 42 of the auxiliary member 27. Therefore, when the second rail 24 is inserted into the channel 32 of the first rail 22 by displacing it from outside the channel 32 of the first rail 22 along the retraction direction D2, the first wall 38 a and the second wall 38 b of the second rail 24 can be effectively supported by the rotating balls 48 of the first portion 44 a and the second portion 44 b of the auxiliary slide device 26 at the predetermined position K to facilitate stable and smooth insertion of the second rail 24 into the channel 32 of the first rail 22 along the retraction direction D2.

[0034] As shown in Figures 10, 11 and 12, when the second rail 24 is further displaced along the retraction direction D2 from the position shown in Figure 9 relative to the first rail 22, the release portion 37 of the second rail 24 drives the elastic portion 50 of the holding member 28 to release the engagement between the engagement portion 42 of the auxiliary member 27 and the predetermined portion 52 of the elastic portion 50 of the holding member 28, so that the auxiliary slide device 26 can be displaced along the retraction direction D2 from the predetermined position K.

[0035] 11 relative to first rail 22, second guide structure 39b of release portion 37 of second rail 24 abuts against second guide portion 66 of elastic portion 50 of holding member 28 to release engagement between engagement portion 42 of auxiliary member 27 and predetermined portion 52 of elastic portion 50 of holding member 28, thereby moving elastic portion 50 from first state S1, e.g., the locked state, to second state S2, e.g., the unlocked state. At this time, elastic portion 50 elastically deforms and accumulates elastic force. Thereafter, when the second rail 24 is displaced along the retraction direction D2 from the position shown in FIG. 11 to the position shown in FIG. 12 relative to the first rail 22, the auxiliary slide device 26 displaces along the retraction direction D2 from the predetermined position K in response to the retraction movement of the second rail 24, and releases the elastic force of the elastic part 50 to move the elastic part 50 from the second state S2 to the first state S1.

[0036] 10 , the size of the predetermined portion 52 is larger than the size of the engaging portion 42. Specifically, the longitudinal dimension of the predetermined portion 52, for example, the hole structure, is larger than the longitudinal dimension of the engaging portion 42, for example, the engaging hook, in order to loosely fit the predetermined portion 52 and the engaging portion 42 and facilitate disengagement between the engaging portion 42 and the predetermined portion 52. That is, by adopting such a configuration, it is possible to prevent not only failure in disengagement between the engaging portion 42 and the predetermined portion 52 due to a tight fit between the predetermined portion 52 and the engaging portion 42, but also deformation or damage to the engaging portion 42 and / or the second end section 62 of the elastic portion 50.

[0037] Furthermore, if an unintended external force is applied to the auxiliary sliding device 26 held at the predetermined position K due to the engagement between the engaging portion 42 and the predetermined portion 52, the engaging portion 42 may be pushed or pulled by the predetermined portion 52. In this case, the material properties of the auxiliary member 27 can increase the structural strength or hardness to prevent or reduce damage to the auxiliary sliding device 26, thereby increasing the reliability of the operation of holding the auxiliary sliding device 26 at the predetermined position K.

[0038] From the above, the slide rail assembly 20 according to the embodiment of the present invention has the following features.

[0039] 1) Unlike the prior art, the auxiliary member 27 having the engaging portion 42 is an independent member connected to the auxiliary slide device 26 and is made of a first material, while the auxiliary slide device 26 is made of a second material, thereby improving the reliability of the operation of holding the auxiliary slide device 26 at the predetermined position K.

[0040] 2) The auxiliary sliding device 26 includes a recess 74 having a second surface 82 to which the connecting portion 76 of the auxiliary member 27 is connected in order to reduce or eliminate the lateral difference between the surface 84 of the auxiliary member 27 and the first surface 80 of the auxiliary sliding device 26 when the auxiliary member 27 is connected to the auxiliary sliding device 26.

[0041] 3) The first rail 22 includes a restraining portion 54 configured to prevent inadvertent deformation, movement, or bending of the resilient portion 50 to enhance operational reliability.

[0042] 4) The size of the predetermined portion 52 is larger than the size of the engaging portion 42 so that the predetermined portion 52 and the engaging portion 42 can be easily disengaged from each other.

[0043] 5) The body portion 58 is integrally formed with the resilient portion 50 and the support section 68 such that the retention member 28 is of unitary construction.

[0044] Those skilled in the art will readily appreciate that numerous modifications and variations can be made to the apparatus and method while retaining the teachings of the present invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.

Claims

1. a first rail including a channel; a second rail movably mounted in the channel of the first rail and longitudinally displaceable relative to the first rail; an auxiliary slide device movably attached between the first rail and the second rail; an auxiliary member connected to the auxiliary slide device, the auxiliary member including an engagement portion; a holding member disposed on the first rail, the holding member including an elastic portion, the elastic portion including a predetermined portion; 1. A slide rail assembly comprising: the auxiliary member is made of a first material, and the auxiliary sliding device is made of a second material; When the second rail is displaced along an opening direction relative to the first rail and removed from the channel of the first rail, the auxiliary slide device is positioned in a predetermined position by engagement between the engagement portion of the auxiliary member and a predetermined portion of the elastic portion of the retaining member.

2. The slide rail assembly of claim 1 , wherein the auxiliary member is an independent member connected to the auxiliary slide device.

3. 2. The slide rail assembly of claim 1, wherein the auxiliary slide device includes a recess, and the auxiliary member further includes a connection portion and an extension portion, the connection portion configured to be connected to the recess, the extension portion extending from the connection portion, and the engagement portion disposed on the extension portion.

4. the first rail further includes a restraining portion configured to restrain the resilient portion from moving laterally; 2. The slide rail assembly of claim 1, wherein one of the predetermined portion and the suppressing portion is a receiving structure, and the other of the predetermined portion and the suppressing portion is a protrusion configured to extend into the receiving structure, and the receiving structure is a hole structure defined by a plurality of walls.

5. 2. The slide rail assembly of claim 1, wherein the first rail further includes a first wall, a second wall, and a longitudinal wall connected between the first wall and the second wall of the first rail, the first wall, the second wall, and the longitudinal wall of the first rail cooperatively defining a channel of the first rail; the retaining member further includes a body portion connected to the longitudinal walls of the first rail; the resilient portion further includes a first end section and a second end section, the first end section of the resilient portion connected to the body portion of the retaining member, the predetermined portion being disposed on the second end section of the resilient portion, the second end section of the resilient portion including a first guide section and a second guide section, the predetermined portion being disposed between the first guide section and the second guide section; the body portion of the retaining member includes a support section configured to support the resilient portion, and the body section is formed integrally with the resilient portion and the support section such that the retaining member has a unitary structure.

6. 2. The slide rail assembly of claim 1, wherein the second rail includes a release portion, and when the second rail is inserted from outside the channel of the first rail into the channel of the first rail along a retraction direction, the release portion of the second rail drives the elastic portion of the retaining member to release the engagement between the engagement portion of the auxiliary member and a predetermined portion of the elastic portion of the retaining member, so as to allow the auxiliary slide device to be displaced along the retraction direction from the predetermined position.

7. The slide rail assembly according to claim 1 , wherein the size of the predetermined portion is larger than the size of the engagement portion.

8. 2. The slide rail assembly of claim 1, wherein the auxiliary slide device includes a first surface and a second surface, and a lateral distance between the first surface and a longitudinal wall of the first rail is greater than a lateral distance between the second surface and the longitudinal wall of the first rail.

9. The slide rail assembly of claim 1 , wherein the first material has a hardness greater than the hardness of the second material.

10. 2. The slide rail assembly of claim 1, wherein the first material is carbon steel and the second material is zinc-plated steel.

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