CN214315991U - Sliding rail for server case - Google Patents

Abstract

The utility model provides a slide rail for a server chassis, which comprises a shell, a middle rail sliding in the shell and a rail core sliding in the middle rail, wherein a plurality of first balls are arranged between the shell and the middle rail, and the first balls are arranged on a first slide rail bracket; a plurality of second balls are arranged between the middle rail and the rail core, and the second balls are arranged on a second slide rail bracket; the middle rail is provided with a first locking structure, the middle rail is provided with a first stop dog, and the rail core is provided with an unlocking structure. All be provided with the slide rail bracket of installation ball in shell and the well rail, under the effect of frictional force, slide rail bracket can be along with well rail and the motion of rail core to play the effect of leading smooth, compare with prior art, can reduce 50% ball use amount at least. In order to prevent the second sliding rail bracket from being brought out of the middle rail when the rail core completely slides out of the middle rail, the locking structure locks the second sliding rail bracket on the middle rail when the rail core completely slides out of the middle rail.

Description

Sliding rail for server case

Technical Field

The utility model belongs to the technical field of the slide rail manufacturing technology and specifically relates to a slide rail for server machine case.

Background

The existing three-section ball sliding rail generally comprises a shell, a middle rail and a rail core, wherein the middle rail is arranged in the shell and can slide, the middle rail can be pulled out from the shell, the rail core is arranged on the middle rail and can slide, the rail core can be pulled out from the middle rail, and the server case, a drawer and other structures are arranged on the rail core. In practical applications, in order to ensure the supporting stability, the maximum distance for sliding the middle rail out of the casing is half of its own length, for example, if the casing, the middle rail and the rail core are the same in length and are all 1.2 meters, the maximum distance for sliding the middle rail out of the casing is 0.6 meters, otherwise, the middle rail is very easily bent by a heavy object. Similarly, the maximum distance that the rail core slides out of the middle rail is half its length. In contrast, since the chassis and the like need to be detached from the slide rails, the rail core needs to be completely slid out (also called to be unfolded) from the middle rail, so that the chassis and the rail core can be removed simultaneously. Therefore, the slip distance of the rail core is large. In order to increase the moving flexibility of the middle rail and the rail core, in the prior art, balls are respectively arranged between the shell and the middle rail and between the middle rail and the rail core. However, since the ball structure is as big as rice grains, it is necessary to set up nearly hundreds of balls in a distance of more than one meter, and if the balls with a larger volume are set up, the structural weight of the slide rail is increased, which causes the change of the slide rail shape, for example, the increase of the width of the slide rail, and the use requirement cannot be satisfied. Therefore, the ball is arranged along the whole length of the slide rail structure, so that the machining and forming difficulty of the slide rail and the manufacturing cost of the slide rail are increased.

Therefore, a new technical solution is provided to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a slide rail for server machine case.

The technical proposal designed by the utility model is as follows

A slide rail for a server chassis comprises a shell, a middle rail and a rail core, wherein the middle rail slides in the shell, the rail core slides in the middle rail, a plurality of first balls are arranged between the shell and the middle rail, the first balls are arranged on a first slide rail bracket, the first slide rail bracket is arranged on the shell and can slide, and the middle rail is arranged on the first slide rail bracket and can slide; a plurality of second balls are arranged between the middle rail and the rail core, the second balls are arranged on a second slide rail bracket, the second slide rail bracket is arranged on the middle rail and can slide, and the rail core is arranged on the second slide rail bracket and can slide;

a first locking structure is arranged at a first preset position of the middle rail, a first stop block is arranged at a second preset position of the middle rail, and an unlocking structure is arranged at the first preset position of the rail core; the second slide rail bracket slides in the middle rail along with the rail core, and when the rail core slides out of the middle rail according to a first preset distance, the second slide rail bracket is locked by the first locking structure; when the rail core slides into the middle rail according to a second preset distance, the unlocking structure is detachably connected with the first locking structure and used for unlocking the second slide rail bracket from the first locking structure.

The slide rail for the server chassis is characterized in that the rail core and the second slide rail bracket are both arranged on the front surface of the middle rail, a first through hole is formed in a first preset position of the middle rail, and a second through hole is formed in a first preset position of the second slide rail bracket;

the first locking structure comprises a spring piece, one end of the spring piece is fixedly connected to the back of the middle rail, the other end of the spring piece is provided with a first limiting convex part, and the first limiting convex part is arranged in the first through hole in a protruding mode;

the unlocking structure is arranged on the back of the rail core and comprises a first bump; when the rail core slides out of the middle rail according to a first preset distance, the second through hole is coaxial with the first through hole, the first limiting convex part is clamped in the second through hole, and the second slide rail bracket is locked by the first limiting convex part; when the rail core slides into the middle rail according to a second preset distance, the first limiting convex part is pushed out of the second through hole by the first bump and used for unlocking the second slide rail support.

The sliding rail for the server case is characterized in that a first limiting mechanism for preventing the rail core from sliding out of the front end of the middle rail is arranged at the front end of the middle rail and a second preset position of the rail core.

The first limiting mechanism comprises a second convex block and a shifting fork, the second convex block is fixedly connected to the front surface of the middle rail, the shifting fork is connected to the back surface of the rail core through a rivet structure, the shifting fork can rotate, a torsion spring is arranged on the rail core, one end of the torsion spring is fixedly connected with one end of the shifting fork, the other end of the torsion spring is fixedly connected with the rail core, and a notch is formed in the bottom of the shifting fork; when the rail core slides out of the middle rail, the second lug gradually jacks up the other end of the shifting fork along the bottom of the shifting fork, and when the second lug is clamped in the notch, the rail core cannot slide on the middle rail; and the shifting fork is shifted upwards to separate the second lug from the notch, and the rail core can slide into the middle rail.

The sliding rail for the server case is characterized in that a blocking piece is arranged on the front face of the rail core in a protruding mode and used for preventing the other end of the shifting fork from tilting.

The sliding rail for the server case is characterized in that the surface of the rail core is provided with a plurality of connecting holes and a mounting seat used for connecting with the outer wall of the server case.

The sliding rail for the server chassis is characterized in that a first locking structure is arranged at a preset position of the shell, a second locking structure is arranged at a third preset position of the middle rail, a second locking structure is arranged at a third preset position of the rail core, when the middle rail slides out of the shell according to a third preset distance, the second locking structure is locked at the first locking structure, and the rail core can slide on the middle rail; when the rail core slides into the middle rail according to a fourth preset distance, the second locking structure pushes the second locking structure, the second locking structure is unlocked from the first locking structure, and the middle rail slides into the shell.

The utility model discloses beneficial effect: the utility model discloses in, all be provided with the slide rail bracket of installation ball in shell and the well rail, under the effect of frictional force, slide rail bracket can be along with well rail and rail core motion to play the effect of leading smoothly, compare with prior art, can reduce 50% ball use amount at least. The second slide rail bracket can be taken out of the middle rail when the rail core completely slides out of the middle rail, so that the installation and the use are inconvenient, the locking structure is arranged on the middle rail in order to prevent the second slide rail bracket from being taken out of the middle rail, and the second slide rail bracket is locked on the middle rail when the rail core completely slides out of the middle rail.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the present invention.

Fig. 3 is a schematic perspective view of the present invention.

Fig. 4 is a schematic perspective view of the present invention.

Fig. 5 is a schematic perspective view of the present invention.

Fig. 6 is a schematic perspective view of the present invention.

Fig. 7 is a schematic perspective view of the present invention.

Fig. 8 is a schematic perspective view of the present invention.

Fig. 9 is a schematic perspective view of the present invention.

Fig. 10 is a schematic perspective view of the present invention.

Fig. 11 is a schematic perspective view of the present invention.

Fig. 12 is a schematic perspective view of the present invention.

Fig. 13 is a schematic perspective view of the present invention.

Fig. 14 is a schematic perspective view of the present invention.

Fig. 15 is a schematic perspective view of the present invention.

Fig. 16 is a schematic perspective view of the present invention.

Reference numbers in the figures: 1. a housing; 11. a first slide rail bracket; 12. a first ball bearing; 2. a middle rail; 21. a second slide rail bracket; 211. a second through hole; 22. a second ball bearing; 23. a first stopper; 24. a first through hole; 25. a spring plate; 251. a first limit protrusion; 26. a second bump; 261. positioning holes; 262. a metal sheet; 27. a third slide rail bracket; 271. a back plate; 272. a rear bracket; 273. a front bracket; 28. a third through hole; 281. a first circular hole area; 282. a second circular hole area; 3. a rail core; 31. a shifting fork; 311. a rivet structure; 312. a notch; 32. a first torsion spring; 33. a first bump; 34. a baffle plate; 35. bolt holes; 351. a first connection region; 352. a second connection region; 36. a spring plate; 4. a first step position; 41. a first convex tooth portion; 42. a first limiting part; 5. a second step position; 51. a second convex tooth portion; 52. a second limiting part; 6. swinging and buckling; 61. a rotating structure; 62. a clamping head; 7. a second torsion spring; A. a server chassis.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically or electrically connected or may communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In order to solve the above technical problems, as shown in fig. 1, the present invention provides a slide rail for a server chassis, including a housing 1, a middle rail 2 sliding in the housing 1, and a rail core 3 sliding in the middle rail 2, wherein a plurality of first balls 12 are disposed between the housing 1 and the middle rail 2, the first balls 12 are mounted on a first slide rail bracket 11, the first slide rail bracket 11 is disposed on the housing 1 and can slide, and the middle rail 2 is mounted on the first slide rail bracket 11 and can slide; a plurality of second balls 22 are arranged between the middle rail 2 and the rail core 3, the second balls 22 are mounted on a second slide rail bracket 21, the second slide rail bracket 21 is arranged on the middle rail 2 and can slide, and the rail core 3 is mounted on the second slide rail bracket 21 and can slide; a first locking structure is arranged at a first preset position of the middle rail 2, a first stop block 23 is arranged at a second preset position of the middle rail 2, and an unlocking structure is arranged at the first preset position of the rail core 3; the second slide rail bracket 21 slides in the middle rail 2 along with the rail core 3, and when the rail core 3 slides out of the middle rail 2 according to a first preset distance, the second slide rail bracket 21 is locked by the first locking structure; when the rail core 3 slides into the middle rail 2 according to a second preset distance, the unlocking structure is detachably connected with the first locking structure, so as to unlock the second slide rail bracket 21 from the first locking structure.

The utility model discloses beneficial effect: the utility model discloses in, all be provided with the slide rail bracket of installation ball in shell 1 and the well rail 2, under the effect of frictional force, slide rail bracket can be along with well rail 2 and the motion of rail core 3 to play and lead smooth effect. In practical application, the length of the middle rail 2/rail core 3 is compared with the length of the slide rail bracket, and the ratio is 2:1, so that compared with the prior art, the slide rail bracket has the same sliding guide performance, and at least 50% of the usage amount of the balls on the slide rail can be reduced. The second slide rail support 21 can be taken out of the middle rail 2 when the rail core 3 completely slides out of the middle rail 2, so that secondary installation and use are inconvenient, the second slide rail support 21 is prevented from being taken out of the middle rail 2, and the second slide rail support 21 is locked on the middle rail 2 when the rail core 3 completely slides out of the middle rail 2. When the second slide rail bracket 21 slides into the middle rail 2, the first stopper 23 is used for limiting the sliding distance of the second slide rail bracket 21.

In order to lock/unlock the second slide rail bracket 21, in the present embodiment, as shown in fig. 1 and fig. 3, the rail core 3 and the second slide rail bracket 21 are both disposed on the front surface of the middle rail 2, a first through hole 24 is disposed on a first preset position of the middle rail 2, and a second through hole 211 is disposed on a first preset position of the second slide rail bracket 21; the first locking structure comprises a spring piece 25, one end of the spring piece 25 is fixedly connected to the back of the middle rail 2, the other end of the spring piece 25 is provided with a first limiting convex part 251, and the first limiting convex part 251 is arranged in the first through hole 24 in a protruding manner; the unlocking structure is arranged on the back of the rail core 3 and comprises a first lug 33; when the rail core 3 slides out of the middle rail 2 according to a first preset distance, the second through hole 211 is coaxial with the first through hole 24, the first limiting convex part 251 is clamped in the second through hole 211, and the second rail bracket 21 is locked by the first limiting convex part 251 and cannot slide. Specifically, in an initial state, the first limit convex part 251 is protrudingly disposed in the first through hole 24 of the middle rail 2 (the first through hole 24 is close to the front end of the middle rail 2), in a process that the rail core 3 slides out of the middle rail 2, the second rail bracket 21 slides along with the rail core 3 under the action of friction force, when the second through hole 211 of the second rail bracket 21 (the second through hole 211 is close to the front end of the second rail bracket 21) is close to the first limit convex part 251, the back of the second rail bracket 21 pushes the first limit convex part 251, and when the second through hole 211 of the second rail bracket 21 is coaxial with the first through hole 24 of the middle rail 2, due to an elastic force, the first limit convex part 251 rebounds into the second through hole 211, so as to limit the second rail bracket 21 on the middle rail 2. When the rail core 3 slides into the middle rail 2 according to the second preset distance, the first protrusion 33 pushes the first limiting protrusion 251 out of the second through hole 211, so as to unlock the second slide rail bracket 21 and enable the second slide rail bracket to slide on the middle rail 2. Specifically, when the rail core 3 slides into the middle rail 2, the first protrusion 33 pushes the first limit protrusion 251 in the sliding process of the rail core 3, the first limit protrusion 251 is pushed out of the second through hole 211 under the action of elastic force, and the rail core 3 of the second slide rail bracket 21 continues to slide on the middle rail 2 under the action of friction force.

In practical use, in order to make the distance value of the sliding movement of the rail core 3 from the middle rail 2 not exceed half of the length of the rail core, in this embodiment, a first limiting mechanism for preventing the rail core 3 from sliding out of the front end of the middle rail 2 is arranged at the front end of the middle rail 2 and a second preset position of the rail core 3. Further, as shown in fig. 1 and 4, the first limiting mechanism includes a second protrusion 26 and a shifting fork 31, the second protrusion 26 is fixedly connected to the front surface of the middle rail 2, the shifting fork 31 is connected to the back surface of the rail core 3 through a rivet structure 311, the shifting fork 31 is rotatable, a first torsion spring 32 is disposed on the rail core 3, one end of the first torsion spring 32 is fixedly connected to one end of the shifting fork, the other end of the first torsion spring 32 is fixedly connected to the rail core 3, and a notch 312 is disposed at the bottom of the shifting fork 31; when the rail core 3 slides out of the middle rail 2, the second protrusion 26 gradually jacks up the other end of the shifting fork 31 along the bottom of the shifting fork, and when the second protrusion 26 is clamped in the notch 312, the rail core 3 cannot slide on the middle rail 2. Specifically, when the rail core 3 slides out of the middle rail 2, the bottom of the fork 31 and the second protrusion 26 rub against each other, the second protrusion 26 gradually pushes up the other end of the fork 31 along the bottom of the fork, and when the second protrusion 26 is engaged in the notch 312, the rail core 3 cannot slide on the middle rail 2. By pulling the fork 31 upward, the second protrusion 26 is separated from the notch 312, and the rail core 3 can slide into the middle rail 2. Specifically, the other end of the fork 31 is moved upwards by a human finger, and when the second protrusion 26 is separated from the notch 312, the rail core 3 is pushed, so that the rail core 3 slides into the middle rail 2. In practical application, in order to facilitate the processing, the middle rail 2 and the second protrusion 26 are respectively processed into two parts, specifically, a positioning hole 261 is formed at a preset position of the middle rail 2, a metal sheet 262 is disposed at the bottom of the second protrusion 26, the metal sheet 262 is fixedly connected to the back surface of the middle rail 2, and the second protrusion 26 protrudes from the front surface of the middle rail 2 after passing through the positioning hole 261.

In a further embodiment, a stop piece 34 is protruded from the front surface of the rail core 3, and the stop piece 34 is used for preventing the other end of the shifting fork from tilting.

In a further embodiment, a row of bolt holes 35 is formed on the surface of the rail core 3, and the rail core 3 is connected to the side wall of the server chassis a (hereinafter referred to as chassis) by bolts (not shown in the drawings, or screws). In order to rapidly separate the cabinet from the rail core 3 without detaching bolts (or screws) in a state where the rail core 3 is connected to the server cabinet a (as shown in fig. 5), in a further embodiment, the bolt holes 35 include a first connection region 351 and a second connection region 352, the first connection region 351 communicates with the second connection region 352, and an opening area of the first connection region 351 is larger than an opening area of the second connection region 352. The structure arrangement can be realized by fixedly connecting bolts (or screws, hereinafter, the bolts are taken as an example) on the outer wall of the case, and reserving a bolt body, when the rail core 3 is installed, the bolt head with the cross patterns can be placed into the bolt hole 35 from the first connecting area 351, so that the bolt head protrudes out of the front surface of the rail core 3, and then the rail core 3 is translated forwards (or the case is translated backwards), so that the bolt body of the bolt is clamped in the second connecting area 352. In order to increase the structural connection stability, the bolt head needs to be further fixed in the second connection region 352, in a further embodiment, the front surface of the rail core 3 is provided with an elastic sheet 36, one end of the elastic sheet 36 is fixedly connected to the rail core 3, the other end of the elastic sheet 36 is correspondingly arranged at the first connection region 351 of any bolt hole 35, the bolt head bends the elastic sheet 36 after passing through the bolt hole 35 from the first connection region 351, and when the bolt body is clamped in the second connection region 352, the elastic sheet 36 rebounds and clamps the case bolt head to prevent the case bolt head from moving horizontally.

In practical application, the housing 1 needs to be connected to two vertical columns with different horizontal distances for use, and in order to meet the above-mentioned use requirement, in a further embodiment, as shown in fig. 1 and fig. 2, a back plate 271 is fixedly connected to the back surface of the housing 1, a third slide rail bracket 27 is connected to the back plate 271, the third slide rail bracket 27 can slide on the back plate 271, one end of the third slide rail bracket 27 is fixedly connected to the rear bracket 272, and one end of the housing 1 is fixedly connected to the front bracket 273. In practical applications, the connection manner of the third sliding rail bracket 27 and the back plate 271 can refer to the connection manner of the housing 1 and the middle rail 2 (or the connection manner of the middle rail 2 and the rail core 3), and details are not repeated herein. In this type of structure, the front and rear brackets 272 are respectively used to be fixedly connected to two vertical posts (not shown), and the predetermined portion of the third slide rail bracket 27 can slide out of the back plate 271 to change the horizontal distance between the rear bracket 272 and the front bracket 273.

In practical application, the housing 1 is fixed on a vertical column for installing the server chassis a, when the sliding rail is unfolded, the order of unfolding and sliding the middle rail 2 and the rail core 3 is uncertain, there is a possibility that the middle rail 2 is unfolded fully (i.e. has slid to a gear and cannot slide forward any more) and then the rail core 3 is unfolded slidably, there is a possibility that the middle rail 2 is unfolded fully and then the middle rail 2 is unfolded slidably, there is a possibility that the rail core 3 is also unfolded when the middle rail 2 is unfolded partially, or there is a possibility that the middle rail 2 is also unfolded slidably when the rail core 3 is unfolded partially slidably, i.e. the order of unfolding the middle rail 2 and the rail core 3 is random and uncertain. And the width of the shell 1 is greater than the middle rail 2, the width of the middle rail 2 is greater than the rail core 3, that is, the rail core 3 is the structure with the weakest bearing capacity in the sliding rail structure, therefore, when the rail core 3 is connected with the server chassis a (under the condition of bearing the rail core 3), if the rail core 3 is fully or partially unfolded, the middle rail 2 starts to be unfolded again, the sliding distance of the rail core 3 is large when bearing alone, and the bearing time of the rail core 3 is long, so that the deformation degree is large, and the service life of the sliding rail is seriously influenced. Therefore, in this embodiment, a first locking structure is disposed at a predetermined position of the housing 1, a second locking structure is disposed at a third predetermined position of the middle rail 2, and a second locking structure is disposed at a third predetermined position of the rail core 3, when the middle rail 2 slides out of the housing 1 according to a third predetermined distance, the second locking structure is locked at the first locking structure, and the rail core 3 can slide on the middle rail 2; when the rail core 3 slides into the middle rail 2 according to a fourth preset distance, the second locking structure pushes the second locking structure to unlock the second locking structure from the first locking structure, so that the middle rail 2 slides into the shell 1. The structure is arranged, when the sliding rail is in a closed state (the rail core 3 is completely slid into the middle rail 2, and the middle rail 2 is completely slid into the shell 1), the second locking structure on the middle rail 2 is locked with the second locking structure, namely, the middle rail 2 and the rail core 3 are locked, so that when the sliding rail is unfolded forwards, the middle rail 2 is unfolded forwards in the shell 1 in a sliding manner, the rail core 3 cannot be unfolded in the middle rail 2 in a sliding manner, after the middle rail 2 slides out of the shell 1 to the maximum unfolding length, the second locking structure is unlocked by being separated from the second locking structure, the rail core 3 can be unfolded, and the sequential unfolding of the middle rail 2 first out and the rail core 3 last out is realized; when the sliding rail structure is in the unfolding state (the middle rail 2 slides out of the shell 1 to the maximum unfolding length, and the rail core 3 slides out of the middle rail 2 to be unfolded), the second locking structure is locked with the first locking structure, namely, the middle rail 2 is locked with the shell 1, therefore, when the sliding rail is closed backwards, the rail core 3 slides backwards in the middle rail 2, the middle rail 2 cannot slide in the shell 1, after the rail core 3 completely slides into the middle rail 2, the second locking structure is unlocked by being separated from the first locking structure, and the middle rail 2 can slide backwards in the shell 1, namely, sequencing closure of first entering of the rail core 3 and later entering of the middle rail 2 is realized. In conclusion, after the rail core 3 bears the load, if the rail core 3 can be unfolded after the middle rail 2 is completely unfolded, and the middle rail 2 can be closed after the rail core 3 is completely closed, the sliding distance of the independent load bearing of the rail core 3 can be minimized, and therefore the excellent load bearing capacity of the sliding rail can be guaranteed.

In this embodiment, as shown in fig. 6 to 8, a first step 4 is protrudingly disposed on the front surface of the housing 1, two ends of the first step 4 extend along the length direction of the housing 1, the bottom of the first locking structure is fixedly connected to the first step 4, a second step 5 is protrudingly disposed on the back surface of the rail core 3, two ends of the second step 5 extend along the length direction of the rail core 3, the bottom of the second locking structure is fixedly connected to the second step 5, and the first locking structure and the second locking structure are both sheet-shaped structures; the first locking structure comprises a first convex tooth part 41 and a first limit part 42, the first convex tooth part 41 is arranged at one end of the first step 4, and the first limit part 42 is arranged at the other end of the first step 4; the second locking structure comprises a second convex tooth part 51 and a second limiting part 52, the second convex tooth part 51 is arranged at one end of the second step 5, and the second limiting part 52 is arranged at the other end of the second step 5; the surface of the middle rail 2 is provided with a third through hole 28; the second locking structure comprises a pendulum buckle 6 and a second torsion spring 7, the pendulum buckle 6 and the second torsion spring 7 are both arranged on the front surface of the middle rail 2, the pendulum buckle 6 is connected to the middle rail 2 through a rotating structure 61, one end of the second torsion spring 7 is connected with one end of the pendulum buckle 6, and the other end of the second torsion spring 7 is fixedly connected to the middle rail 2; the other end of the swing buckle 6 is provided with a clamping joint 62, one end of the clamping joint 62 is detachably connected with the second buckle structure, and the other end of the clamping joint 62 horizontally penetrates through the third through hole 28 and then is detachably connected with the first buckle structure; the clip head 62 is circular in vertical cross-section at both ends. In this embodiment, the rotating structure 61 may be a rivet structure. The structure is arranged, and the working principle of the sliding rail structure that the middle rail 2 enters in first out and then enters in first out is as follows: when the slide rail is in a closed state, under the action of the second torsion spring 7, the swing buckle 6 swings downward to drive one end of the clamping head 62 (of course, the other end of the clamping head 62 swings simultaneously, and the other end of the clamping head 62 can move in the installation gap between the middle rail 2 and the housing 1) to swing to the front end of the second tooth part 51 (between the second tooth part 51 and the second limiting part 52) to be clamped with the second tooth part 51, at this time, one end of the clamping head 62 is located between the second tooth part 51 and the second limiting part 52 (as shown in fig. 10 and 11), one end of the clamping head 62, the second tooth part 51 and the second limiting part 52 are on the same plane, at this time, the second locking structure is locked with the second locking structure, the rail core 3 is locked with the middle rail 2, and the second locking structure is separated from the first locking structure, the housing 1 is unlocked with the middle rail 2, if the rail core 3 is retracted into the rail 2 again by force, one end of the clamping head 62 is pressed against the second limiting part 52 (as shown in fig. 9), so that the rail core 3 is prevented from further moving; the slide rail structure is unfolded forwards, in the process that the middle rail 2 slides out of the housing 1, the other end of the clamping joint 62 touches the first convex tooth part 41, the first convex tooth part 41 gradually pushes up the other end of the clamping joint 62 in the process of pulling the middle rail 2 forwards, the second convex tooth part 51 continuously pushes one end of the clamping joint 62 forwards, so that the other end of the swing buckle 6 swings upwards, one end of the clamping joint 62 is separated from the first convex tooth part 41 and the second convex tooth part 51 (as shown in fig. 12 to 14), the middle rail 2 is continuously pulled forwards with force, the second locking structure on the rail core 3 is driven to be separated from the clamping joint 62 for unlocking, the rail core 3 can continuously slide forwards and unfold and stretch out of the middle rail 2, the swing buckle 6 continuously swings downwards under the action of the second torsion spring 7, the clamping joint 62 swings downwards into the first locking structure, and the other end of the clamping joint 62 swings to the front end of the first convex tooth part 41, and the first limiting portion 42 is used for limiting the card connector 62 to move forward continuously, so that the sliding distance of the middle rail 2 on the housing 1 can be limited, at this time, one end of the card connector 62 is located between the first tooth portion 41 and the first limiting portion 42 (as shown in fig. 15), at this time, the second locking structure is locked with the first locking structure, the middle rail 2 is locked with the housing 1, the second locking structure is disengaged from the second locking structure, the middle rail 2 is unlocked with the rail core 3, and if the middle rail 2 is pulled forward by a force, the other end of the card connector 62 is pressed by the first limiting portion 42 (as shown in fig. 16), so that the middle rail 2 is prevented from further moving. When the slide rail needs to be closed backwards, in the process that the rail core 3 slides into the middle rail 2, when the second convex tooth part 51 touches one end of the clamping connector 62, the rail core 3 continues to slide backwards in the middle rail 2, the second convex tooth part 51 gradually pushes up the clamping connector 62, the other end of the swing buckle 6 swings upwards, the other end of the clamping connector 62 is separated from the first convex tooth part 41 upwards, the first locking structure is separated from unlocking, the rail core 3 continues to be pushed backwards by force, under the action of the second torsion spring 7, one end of the clamping connector 62 swings downwards again to the front end of the second convex tooth part 51 (between the second convex tooth part 51 and the second limiting part 52), the second locking structure is locked with the second locking structure, the middle rail 2 is locked with the rail core 3, the middle rail 2 is unlocked with the housing 1, and therefore the rail core 3 and the middle rail 2 can slide into the housing 1 simultaneously.

In a further embodiment, the clip 62 is "I" shaped in cross-section. In practical applications, to prevent the other end of the swing buckle 6 from tilting, in a further embodiment, the third through hole 28 includes a first circular hole region 281 and a second circular hole region 282, the first circular hole region 281 and the second circular hole region 282 are connected, the diameter of the first circular hole region 281 is smaller than the diameter of the two ends of the clip head 62, and the diameter of the second circular hole region 282 is larger than the diameter of the two ends of the clip head 62. This kind of structure sets up, when installation joint head 62, can be earlier with in putting into third through hole 28 from second round hole area 282 in joint head 62, translation joint head 62 again, can get into first round hole area 281 with the thinner part of joint head 62 interlude, joint head 62 one end is spacing in well rail 2 openly, and the joint head 62 other end is spacing at well rail 2 backs, but joint head 62 luffing motion only.

Because the slide rail structure generally is the aluminum alloy material, for convenient processing, make first hasp structure and 1 an organic whole of shell, second hasp structure and 3 integrated into one piece of rail core, then this first hasp structure and this second hasp structure all use the aluminum alloy material to make. Further, the pendulum button 6 is made of a metal material, preferably iron.

In the above embodiment, the front surface of the housing 1, the front surface of the middle rail 2 and the front surface of the rail core 3 face the server casing a.

It should be added that as shown in fig. 8 to 16, an observation hole (not shown) is formed in the surface of the housing 1, the first step 4 is disposed at the edge of the observation hole, and the first tooth portion 41 and the first limiting portion 42 horizontally extend into the observation hole; similarly, the surface of the rail core 1 is also provided with an observation hole, the second step position 5 is arranged at the edge of the observation hole, and the first tooth part 41 and the first limit part 42 horizontally extend into the observation hole. This kind of structural setting is convenient for observe the pendulum and detain 6 operating condition.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims (7)

1. A slide rail for a server chassis comprises a shell, a middle rail sliding in the shell and a rail core sliding in the middle rail, and is characterized in that a plurality of first ball bearings are arranged between the shell and the middle rail, the first ball bearings are arranged on a first slide rail bracket, the first slide rail bracket is arranged on the shell and can slide, and the middle rail is arranged on the first slide rail bracket and can slide; a plurality of second balls are arranged between the middle rail and the rail core, the second balls are arranged on a second slide rail bracket, the second slide rail bracket is arranged on the middle rail and can slide, and the rail core is arranged on the second slide rail bracket and can slide;

a first locking structure is arranged at a first preset position of the middle rail, a first stop block is arranged at a second preset position of the middle rail, and an unlocking structure is arranged at the first preset position of the rail core; the second slide rail bracket slides in the middle rail along with the rail core, and when the rail core slides out of the middle rail according to a first preset distance, the second slide rail bracket is locked by the first locking structure; when the rail core slides into the middle rail according to a second preset distance, the unlocking structure is detachably connected with the first locking structure and used for unlocking the second slide rail bracket from the first locking structure.

2. The slide rail for a server chassis according to claim 1, wherein the rail core and the second slide rail bracket are both disposed on a front surface of the middle rail, a first through hole is disposed on a first predetermined position of the middle rail, and a second through hole is disposed on a first predetermined position of the second slide rail bracket;

the first locking structure comprises a spring piece, one end of the spring piece is fixedly connected to the back of the middle rail, the other end of the spring piece is provided with a first limiting convex part, and the first limiting convex part is arranged in the first through hole in a protruding mode;

the unlocking structure is arranged on the back of the rail core and comprises a first bump; when the rail core slides out of the middle rail according to a first preset distance, the second through hole is coaxial with the first through hole, the first limiting convex part is clamped in the second through hole, and the second slide rail bracket is locked by the first limiting convex part; when the rail core slides into the middle rail according to a second preset distance, the first limiting convex part is pushed out of the second through hole by the first bump and used for unlocking the second slide rail support.

3. The sliding rail for a server casing according to claim 1, wherein a first position-limiting mechanism is disposed at a second predetermined position of the front end of the middle rail and the rail core for preventing the rail core from sliding out of the front end of the middle rail.

4. The slide rail for the server chassis according to claim 3, wherein the first limiting mechanism comprises a second protrusion and a shifting fork, the second protrusion is fixedly connected to the front surface of the middle rail, the shifting fork is connected to the back surface of the rail core through a rivet structure, the shifting fork is rotatable, a torsion spring is arranged on the rail core, one end of the torsion spring is fixedly connected with one end of the shifting fork, the other end of the torsion spring is fixedly connected with the rail core, and a notch is arranged at the bottom of the shifting fork; when the rail core slides out of the middle rail, the second lug gradually jacks up the other end of the shifting fork along the bottom of the shifting fork, and when the second lug is clamped in the notch, the rail core cannot slide on the middle rail; and the shifting fork is shifted upwards to separate the second lug from the notch, and the rail core can slide into the middle rail.

5. The slide rail for a server chassis according to claim 4, wherein a blocking piece is protrudingly disposed on a front surface of the rail core, and the blocking piece is used for preventing the other end of the shift fork from tilting.

6. The sliding track for server casing according to claim 1, wherein the surface of the track core is provided with a plurality of connecting holes and a mounting seat for connecting with the outer wall of the server casing.

7. The slide rail for the server chassis according to claim 1, wherein a first locking structure is disposed at a predetermined position of the housing, a second locking structure is disposed at a third predetermined position of the middle rail, a second locking structure is disposed at a third predetermined position of the rail core, and when the middle rail slides out of the housing according to a third predetermined distance, the second locking structure is locked at the first locking structure, and the rail core can slide on the middle rail; when the rail core slides into the middle rail according to a fourth preset distance, the second locking structure pushes the second locking structure, the second locking structure is unlocked from the first locking structure, and the middle rail slides into the shell.

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