CN106793664B

CN106793664B - Sequentially movable slide rail for server cabinet

Info

Publication number: CN106793664B
Application number: CN201611148247.3A
Authority: CN
Inventors: 张胜利; 强志成; 黄浩良
Original assignee: Wuxi Haidaer Precision Slides Co ltd
Current assignee: Wuxi Haidaer Precision Slides Co ltd
Priority date: 2016-12-13
Filing date: 2016-12-13
Publication date: 2022-06-14
Anticipated expiration: 2036-12-13
Also published as: CN106793664A

Abstract

The invention provides a sequentially movable sliding rail for a server cabinet, which can solve the problems of complex structure and high production and processing difficulty of the conventional sequentially movable sliding rail. The rear end of the middle slide rail is provided with a rotating shaft hole, the rotating shaft hole is symmetrically provided with a first vertical sliding groove and a second vertical sliding groove, the top ends of the first vertical sliding groove and the second vertical sliding groove are flush along the two sides of the middle slide rail in the length direction, the length of the second vertical sliding groove is larger than the length of the first vertical sliding groove, an elastic part is rotatably installed in the rotating shaft hole, a positioning part is installed in the first vertical sliding groove and the second vertical sliding groove respectively, the two positioning parts are abutted to the two ends of the elastic part respectively, an inner slide rail and an outer slide rail are provided with an inner rail limiting structure and an outer rail limiting structure respectively on one side face of the middle slide rail, the inner rail limiting structure and the outer rail limiting structure can be matched with the two positioning parts simultaneously to realize locking or unlocking between the middle slide rail and the inner slide rail and the outer slide rail respectively.

Description

Sequentially movable slide rail for server cabinet

Technical Field

The invention relates to the field of sliding rails, in particular to a sliding rail device for a server, and specifically relates to a sliding rail capable of moving sequentially for a server cabinet.

Background

The invention discloses a three-section sliding rail capable of moving sequentially for a server, which comprises an outer sliding rail, a middle sliding rail and an inner sliding rail, wherein the middle sliding rail is slidably sleeved on the outer sliding rail, the inner sliding rail is slidably sleeved on the middle sliding rail, a sliding groove is formed in the middle sliding rail and is perpendicular to the longitudinal direction of the middle sliding rail, a positioning part is arranged in the sliding groove, an outer rail locking lug is arranged on the outer sliding rail, an outer rail locking stop point is formed on the inner side of the outer rail locking lug, an outer rail unlocking lug is further arranged on the outer sliding rail, the outer rail unlocking lug forms an outer rail arc-shaped unlocking surface, and the outer rail locking lug is positioned above the unlocking lug and is oppositely arranged to form an upper rail; the inner slide rail is provided with an inner rail locking lug, the inner side of the inner rail locking lug forms an inner rail locking stop point, the inner slide rail is also provided with an inner rail unlocking lug, the inner rail unlocking lug forms an inner rail arc-shaped unlocking surface, and the inner rail locking lug is positioned below the inner rail unlocking lug and is oppositely arranged with the middle to form a lower rail; the locking of the middle slide rail and the inner slide rail is realized through the matching of the first blocking part of the positioning piece and the locking stop point of the inner slide rail, the locking of the middle slide rail and the outer slide rail is realized through the matching of the second blocking part of the positioning piece and the locking stop point of the outer slide rail, the unlocking of the middle slide rail and the inner slide rail is realized through the matching of the second blocking part of the positioning piece and the unlocking lug of the outer slide rail, the unlocking of the middle slide rail and the outer slide rail is realized through the matching of the first blocking part of the positioning piece and the unlocking lug of the inner slide rail, when three sections of slide rails capable of moving sequentially for the server are folded, the inner slide rail firstly shrinks to the middle slide rail and then shrinks to the outer slide rail together, the middle slide rail and the inner slide rail firstly draw out of the outer slide rail and then the inner slide rail is drawn out of the middle slide rail. Although the three-section sliding rail can move sequentially, the problems of complex structure, high processing difficulty and high production cost still exist.

Disclosure of Invention

Aiming at the problems, the invention provides a sequentially movable sliding rail for a server cabinet, which can solve the problems of complex structure and high production and processing difficulty of the conventional sequentially movable sliding rail.

Its technical scheme does, but the slide rail that is used for the sequence motion of server cabinet, it includes outer slide rail and interior slide rail, outer slide rail is adorned admittedly in the server cabinet, interior slide rail is adorned admittedly in server drawer side, through middle slide rail sliding connection, its characterized in that between outer slide rail and the interior slide rail: the rear end of middle slide rail is equipped with a pivot hole, the pivot hole is equipped with the first vertical spout and the vertical spout of second that the top flushed along middle slide rail length direction's bilateral symmetry, the length of the vertical spout of second is greater than first vertical spout length, rotationally install an elastic component in the pivot hole, install a setting element in first vertical spout, the vertical spout of second respectively, two the setting element respectively with the both ends butt of elastic component, interior slide rail, outer slide rail orientation be equipped with interior rail limit structure, outer rail limit structure on the side of middle slide rail respectively, thereby interior rail limit structure, outer rail limit structure homoenergetic and two thereby the setting element forms the cooperation simultaneously and realizes in the middle slide rail respectively with interior slide rail, the locking or the unblock between the outer slide rail.

Furthermore, the elastic part comprises a rotating shaft, two elastic arms which are symmetrical to each other are arranged at the inner side end of the rotating shaft, symmetrical convex blocks are respectively arranged on the outer side surfaces of the two elastic arms, and the rotating shaft is rotatably arranged in the rotating shaft hole.

Further, the setting element includes the center pin, be equipped with the first spacing portion of concentric and the spacing portion of second on the center pin, form the draw-in groove between first spacing portion, the spacing portion of second, two the setting element respectively through respective draw-in groove with first vertical spout, the vertical spout sliding fit of second connect thereby the spacing portion of second salient in the lateral surface of middle slide rail, the lug of two elastic arm lateral surfaces of elastic component block respectively in the draw-in groove corresponding the setting element the both ends of elastic arm are respectively two the first spacing portion top periphery butt of setting element, first spacing portion orientation the side of interior slide rail be equipped with the concentric flange of center pin.

Furthermore, the first limiting part and the second limiting part are both annular.

Furthermore, the tip of two elastic arms of elastic component all is equipped with the spacing portion of arc, the spacing portion of arc of two elastic arms respectively with two the top periphery cooperation butt of the first spacing portion of setting element.

Furthermore, the elastic part is of an integrated structure made of plastic materials.

Further, the inner rail limiting structure is an inner convex bag which is arranged at the rear end part of the inner slide rail and faces the middle slide rail and protrudes out of one side of the middle slide rail, the inner convex bag is provided with a horizontal top surface and an inclined surface, the inclined surface is downward inclined towards the rear end, the inclined surface can be respectively contacted with the bottom surfaces of the flanges of the two positioning pieces, the horizontal top surface can be contacted with the bottom surfaces of the flanges of the positioning pieces arranged in the second vertical slide groove, when the inner slide rail is locked with the middle slide rail, the positioning piece in the first vertical slide groove is positioned at the bottommost end of the first vertical slide groove, the inner convex bag is integrally positioned at the rear end of the first vertical slide groove, so that the positioning piece in the first vertical slide groove and the inner convex bag form horizontal interference, and meanwhile, the flange of the positioning piece in the second vertical slide groove is abutted to the inclined surface of the inner convex bag.

Further, outer rail limit structure include from the back set gradually forward set up in outer slide rail front end and to middle slide rail one side bellied back convex closure and preceding convex closure, and preceding convex closure is by the high straggly arrangement of low to being of back convex closure, preceding convex closure, back convex closure are oblique waist from the preceding oblique downward right trapezoid structure of back, the oblique waist of preceding convex closure can with the spacing portion butt of second of setting element in the first vertical spout, the top surface of back convex closure is less than the tank bottom surface of first vertical spout and oblique waist, the topside of back convex closure can with the spacing portion butt of second of setting element in the second vertical spout, interval L1 between the rear end face of preceding convex closure and the preceding terminal surface of back convex closure is less than horizontal interval L2 of first vertical spout central line to second vertical spout central line, two when outer slide rail and middle slide rail locking the setting element is located respectively first vertical spout, The bottom of the second vertical chute, and the second spacing portion of the positioning piece in the first vertical chute is abutted against the oblique waist of the front convex closure, and the rear convex closure is integrally positioned at the rear end of the second vertical chute, so that the second spacing portion of the positioning piece in the second vertical chute is interfered with the rear convex closure in a horizontal position.

The invention has the beneficial effects that: the structure is simple, the inner rail limiting structure and the outer rail limiting structure are respectively in butt fit with two positioning pieces arranged in a first vertical sliding groove and a second vertical sliding groove on a middle sliding rail to realize locking or unlocking between the inner sliding rail and the middle sliding rail and between the outer sliding rail and the middle sliding rail, so that the sequential opening requirement that the middle sliding rail and the inner sliding rail are firstly drawn out of the outer sliding rail and then drawn out of the inner sliding rail from the middle sliding rail when the sliding rails are outwards pulled open is met, and the sequential closing requirement that the inner sliding rail is firstly contracted to the middle sliding rail and then contracted to the outer sliding rail when the sliding rails are inwards recovered is met; in addition, the inner rail limiting structure and the outer rail limiting structure are only convex hulls which are respectively arranged on the inner side surfaces of the inner slide rail and the outer slide rail facing the middle slide rail, so that the structure is simple, the processing is convenient, and the production cost can be effectively reduced.

Drawings

FIG. 1 is an exploded view of a sequentially movable track for a server rack according to the present invention;

FIG. 2 is an enlarged view of the elastic member of the present invention;

FIG. 3 is an enlarged schematic view of the positioning member of the present invention;

FIG. 4 is a schematic structural view of the inner slide rail and the middle slide rail of the present invention in a locked state;

fig. 5 is a schematic structural view of the outer slide rail and the middle slide rail in a locked state according to the present invention.

Reference numerals are as follows: 10-an outer slide rail; 20-a middle slide rail; 21-rotating shaft hole; 22-a first vertical chute; 23-a second vertical chute; 30-an inner slide rail; 40-an elastic member; 41-a rotating shaft; 42 a-a resilient arm; 42 b-a resilient arm; 43 a-bumps; 43 b-bumps; 44 a-an arc-shaped limiting part; 44 b-an arcuate stop portion; 50 a-a positioning element; 50 b-a positioning element; 51 a-central axis; 51 b-central axis; 52 a-first stop; 52 b-first stop; 53 a-a second stop; 53 b-a second stop; 54 a-card slot; 54 b-card slot; 55 a-a flange; 55 b-a flange; 60-inner rail limit structure; 61-a horizontal top surface; 62-inclined plane; 70-outer rail limit structure; 71-rear convex hull; 711-oblique waist; 712-top edge; 72-front convex hull; 721-oblique waist.

Detailed Description

For convenience of understanding, the front end of the slide rail is only directed to one side end of the opening direction of the slide rail, and the rear end of the slide rail is directed to one side end of the retracting direction of the slide rail; the inner side and the outer side of the outer slide rail and the inner side and the outer side of the inner slide rail are based on the middle slide rail, one side facing the middle slide rail is the inner side, and the other side departing from the middle slide rail is the outer side; the reference to "the inside of the intermediate slide rail" is the side facing the inside slide rail and "the outside of the intermediate slide rail" is the side facing the outside slide rail.

Referring to fig. 1, the sequentially movable slide rail for a server cabinet includes an outer slide rail 10 and an inner slide rail 30, the outer slide rail 10 is fixedly installed on the server cabinet, the inner slide rail 30 is fixedly installed on a side edge of a server drawer, and the outer slide rail 10 is slidably connected with the inner slide rail 30 through a middle slide rail 20; a rotating shaft hole 21 is arranged at the rear end part of the middle slide rail 20, a first vertical slide groove 22 and a second vertical slide groove 23 with flush top ends are symmetrically arranged at two sides of the rotating shaft hole 21 along the length direction of the middle slide rail, the length of the second vertical slide groove 23 is greater than that of the first vertical slide groove 22, an elastic part 40 is rotatably arranged in the rotating shaft hole 21, positioning

parts

50a and 50b are respectively arranged in the first vertical slide groove 22 and the second vertical slide groove 23, the two

positioning parts

50a and 50b are respectively abutted against two ends of the elastic part 40, an inner rail limiting structure 60 and an outer rail limiting structure 70 are respectively arranged on one side surface of the inner slide rail 30 and the outer slide rail 20 facing the middle slide rail, the inner rail limiting structure 60 and the outer rail limiting structure 70 can be matched with the two

positioning pieces

50a and 50b simultaneously, so that the middle slide rail 20 can be locked or unlocked with the inner slide rail 30 and the outer slide rail 10 respectively.

Referring to fig. 2, the elastic member 40 includes a rotating shaft 41, two

elastic arms

42a and 42b are symmetrically disposed at an inner end of the rotating shaft 41, two

protrusions

43a and 43b are symmetrically disposed on outer sides of the two

elastic arms

42a and 42b, respectively, and the rotating shaft 41 is rotatably mounted in the rotating shaft hole 21.

The

positioning members

50a and 50b have the same structure, and taking the positioning member 50a as an example, as shown in fig. 3, the positioning member 50a includes a central shaft 51a, a first position-limiting portion 52a and a second position-limiting portion 53a are concentrically arranged on the central shaft 51a, and a clamping groove 54a is formed between the first position-limiting portion 52a and the second position-limiting portion 53 a; the positioning element 50a is connected with the first vertical sliding chute 22 in a sliding fit manner through the clamping groove 54a, so that the second limiting portion 53a protrudes out of the outer side surface of the intermediate sliding rail 20, the projection 43a on the outer side surface of the elastic arm 42a of the elastic element 40 is clamped in the clamping groove 54a of the positioning element 50a, the free end of the elastic arm 42a abuts against the periphery of the top of the first limiting portion 52a of the positioning element 50a, and a flange 55a concentric with the central shaft 51ab is arranged on one side surface of the first limiting portion 52a facing the inner sliding rail 30; the first limiting portion 52a and the second limiting portion 53b are both annular, the end portions of the two

elastic arms

42a and 42b of the elastic element 40 are respectively provided with an arc-shaped limiting

portion

44a and 44b, and the arc-shaped limiting portion 44a of the elastic arm 42a is in fit abutment with the top periphery of the first limiting portion 52a of the positioning element 42a, so that reliable abutment between the elastic element 40 and the two

positioning elements

42a and 42b can be improved.

The positioning member 50b is fitted in the second vertical sliding groove 23 in the same structure and in the same manner as the positioning member 50a and abuts against the elastic arm 42b of the elastic member 40.

The elastic member 40 is an integral structure made of plastic, and has light weight and high strength.

The inner rail limiting structure 60 is an inner convex hull which is arranged at the rear end part of the inner slide rail 30 and protrudes towards one side of the middle slide rail 20, the inner convex hull is provided with a horizontal top surface 61 which is smoothly connected with an arc and an inclined surface 62 which is inclined downwards towards the rear end, the inclined surface 62 can be respectively contacted with the bottom surfaces of the flanges 55 of the two

positioning pieces

50a and 50b, the horizontal top surface 61 can be contacted with the bottom surface of the flange 55 of the positioning piece 50b arranged in the second vertical slide groove 23, when the inner rail 30 is locked with the intermediate rail 20, the positioning element 50a in the first vertical sliding groove 22 is located at the lowermost end of the first vertical sliding groove 22 and the inner convex bag as the inner rail limiting structure 60 is located at the rear end of the first vertical sliding groove 22 as a whole so that the positioning element 50a in the first vertical sliding groove 22 and the inner convex bag form horizontal interference, while the flange of the positioning element 50b in the second vertical sliding groove 23 abuts against the inclined surface 62 of the inner convex hull, see fig. 4.

The outer rail limiting structure 70 comprises a rear convex hull 71 and a front convex hull 72 which are sequentially arranged at the front end of the outer slide rail 10 from back to front and are convex towards one side of the middle slide rail 30, the front convex hull 72 and the rear convex hull 71 are arranged in a staggered manner from high to low, the front convex hull 72 and the rear convex hull 71 are both of right-angle trapezoidal structures with inclined waists inclining from front to back and inclining downwards, the inclined waist 721 of the front convex hull 72 can be abutted against the second limiting part 53a of the positioning piece 50a in the first vertical slide groove 22, the top edge 712 of the rear convex hull 71 is lower than the groove bottom surface of the first vertical slide groove 22, and the inclined waist 711 and the top edge 712 of the rear convex hull 71 can be abutted against the second limiting part 53b of the positioning piece 50b in the second vertical slide groove 23; the distance L1 between the rear end surface of the front convex hull 72 and the front end surface of the rear convex hull 71 is smaller than the horizontal distance L2 from the central line of the first vertical sliding chute 22 to the central line of the second vertical sliding chute 23; when the outer slide rail 10 and the middle slide rail 20 are locked, the two

positioning members

50a and 50b are respectively located at the bottom ends of the first vertical slide groove 22 and the second vertical slide groove 23, the second limiting portion 53 of the positioning member 50a abuts against the inclined waist 721 of the front convex hull, and the rear convex hull 71 is integrally located at the rear end of the second vertical slide groove 23, so that interference in a horizontal position is formed between the second limiting portion 53 of the positioning member 50b in the second vertical slide groove and the rear convex hull 71.

The following describes the operation of the slide rail of the present invention specifically:

when the inner slide rail 30, the middle slide rail 20 and the outer slide rail 10 of the slide rail are completely closed, the inner slide rail 30 and the middle slide rail 20 are in a locked state, at this time, the elastic arm 42a of the elastic element 40 abuts against the bottommost end of the first vertical slide groove 22 through abutting connection with the first limiting part 52 of the positioning element 50a in the first vertical slide groove 22, and the elastic arm 42b abuts against the first limiting part 52b of the positioning element 50b in the second vertical slide groove 23 to enable the flange 55b of the positioning element 50b to abut against the inclined surface 62 of the inner convex hull, and meanwhile, the inner convex hull serving as the inner rail limiting structure 60 is integrally located at the rear end of the first vertical slide groove 22;

when the slide rail needs to be pulled out, the inner slide rail 30 is pulled forward, at this time, because the whole inner convex bag serving as the inner rail limiting structure 60 is located at the rear end of the first vertical slide groove 22, the inner slide rail 30 is blocked by the interference of the positioning piece 50a in the first vertical slide groove 22 on the horizontal position and cannot move relative to the middle slide rail 20, that is, at this time, the middle slide rail 20 and the inner slide rail 30 are still in a locked state, so that the middle slide rail 20 can be synchronously pulled out from the outer slide rail 10 along with the forward movement of the inner slide rail 30;

when the inner slide rail 30 and the intermediate slide rail 20 move forward synchronously until the intermediate slide rail 20 approaches the outer rail limiting structure 70, the intermediate slide rail 20 moves forward continuously along with the inner slide rail 30, the second limiting portion 53a of the positioning element 50a passes over the rear convex hull 71 and abuts against the inclined waist 721 of the front convex hull 72, at this time, the inner slide rail 30 and the intermediate slide rail 20 are still in the locked state, the rear convex hull 72 is just located right below the positioning element 50b, the inner slide rail 30 is further pulled forward, the second limiting portion 53a of the positioning element 50a is pushed by the inclined waist 721 of the front convex hull 72 to gradually move upward along the first vertical slide rail groove 22 so that the flange 55a moves upward until the blocking interference of the inner convex hull 60 in the horizontal position is removed, and the inner slide rail 30 can be pulled out from the intermediate slide rail 20 alone and continue to be pulled out forward alone until the inner slide rail 30 is completely pulled out; the positioning element 50a pushes the elastic element 40 to rotate clockwise in the process of moving upwards in the first vertical sliding groove 22, the elastic arm 42b of the elastic element 40 pushes the positioning element 50b to move downwards along the second vertical sliding groove 23, when the positioning element 50b moves downwards to the bottommost end of the second vertical sliding groove 23, the rear convex hull 71 just completely passes through the second vertical sliding groove 23 and is located at the rear end of the second vertical sliding groove 23, namely, a horizontal blocking interference is formed between the rear convex hull 71 and the second limiting portion 53b of the positioning element 50b, and the second limiting portion 53b of the positioning element 50b is blocked by the rear convex hull 71, so that the middle sliding rail 20 cannot move backwards along the outer sliding rail 10; at this time, the second limiting portion 53a of the positioning element 50a is just limited by the inclined waist 721 of the front convex packet 72, so that the intermediate slide rail 20 can not move forward any more, thereby achieving the locking between the intermediate slide rail 20 and the outer slide rail 10.

When the slide rails are in a fully opened state, the middle slide rail 20 and the outer slide rail 10 are in a locked state incapable of moving relatively, when the slide rails need to be folded backwards, the inner slide rail 30 is pushed backwards, the inclined surface 62 of the inner convex packet 60 firstly abuts against and contacts with the flange 55a of the positioning element 50a, the inclined surface 62 of the inner convex packet 60 passes over the positioning element 50a and then abuts against and contacts with the flange 55b of the positioning element 50b, and the inclined surface 62 moves backwards along the second vertical sliding groove 23 along with the continuation of the inner slide rail 30, so that the second limiting portion 53b of the positioning element 50b gradually breaks away from the blocking interference of the rear convex packet 71 on the outer slide rail, so as to realize the unlocking of the middle slide rail 20 and the outer slide rail 10 in the closing direction, and the positioning element 50b pushes the elastic element 40 to rotate through the first limiting portion 52b while moving upwards in the second vertical sliding groove 23, so that the elastic arm 42a makes the positioning element 50a abut against the inclined surface 62 of the inner convex packet 60 downwards anticlockwise, the inner slide rail 30 is further pushed backwards, the inner convex hull 60 continues to move backwards until the inclined surface 62 completely abuts against the flange 55b of the positioning element 50b and the whole inner convex hull 60 moves to the rear end of the first vertical slide groove 22, the positioning element 50a falls to the bottommost part of the first vertical slide groove 22 under the action of the elastic element 40, at this time, the inner slide rail 30 is completely recovered in the middle slide rail 20 and is locked with the middle slide rail 20 again, and the inner slide rail 30 and the middle slide rail 20 are folded in the outer slide rail 10 together by continuing to be pushed backwards.

Claims

1. A but slide rail of sequence motion for server cabinet, it includes outer slide rail and interior slide rail, outer slide rail is adorned admittedly on the server cabinet, interior slide rail is adorned admittedly in server drawer side, through middle slide rail sliding connection, its characterized in that between outer slide rail and the interior slide rail: a rotating shaft hole is formed in the end part at the rear end of the middle sliding rail, a first vertical sliding groove and a second vertical sliding groove with the flush top ends are symmetrically formed in the rotating shaft hole along two sides of the length direction of the middle sliding rail, the length of the second vertical sliding groove is larger than that of the first vertical sliding groove, an elastic piece is rotatably installed in the rotating shaft hole, positioning pieces are respectively installed in the first vertical sliding groove and the second vertical sliding groove, the two positioning pieces are respectively abutted to two ends of the elastic piece, an inner rail limiting structure and an outer rail limiting structure are respectively arranged on one side surface of the inner sliding rail and one side surface of the outer sliding rail facing the middle sliding rail, and the inner rail limiting structure and the outer rail limiting structure can be simultaneously matched with the two positioning pieces so as to realize locking or unlocking between the middle sliding rail and the inner sliding rail and the outer sliding rail respectively;

the inner rail limiting structure is an inner convex bag which is arranged at the rear end part of the inner slide rail and protrudes towards one side of the middle slide rail, the inner convex bag is provided with a horizontal top surface and an inclined surface, the horizontal top surface is smoothly connected with an arc, the inclined surface is downward inclined towards the rear end, the inclined surface can be respectively contacted with the bottom surfaces of flanges of two positioning pieces, the horizontal top surface can be contacted with the bottom surfaces of the flanges of the positioning pieces arranged in the second vertical slide rail, when the inner slide rail is locked with the middle slide rail, the positioning piece in the first vertical slide rail is positioned at the bottommost end of the first vertical slide rail, and the inner convex bag is integrally positioned at the rear end of the first vertical slide rail, so that the positioning piece in the first vertical slide rail and the inner convex bag form horizontal interference, and simultaneously, the flange of the positioning piece in the second vertical slide rail is abutted to the inclined surface of the inner convex bag;

outer rail limit structure include from the back set gradually forward in outer slide rail front end and to middle slide rail one side bellied back convex closure and preceding convex closure, and preceding convex closure is by high to low straggly arranging with the back convex closure, preceding convex closure, back convex closure are oblique waist from the preceding oblique downward right trapezoid structure of back, the oblique waist of preceding convex closure can with the spacing portion butt of second of setting element in the first vertical spout, the top surface of back convex closure is less than the tank bottom surface of first vertical spout and oblique waist, the topside of back convex closure can with the spacing portion butt of second of setting element in the vertical spout of second, interval L1 between the rear end face of preceding convex closure and the preceding terminal surface of back convex closure is less than horizontal interval L2 of first vertical spout central line to second vertical spout, two when outer slide rail and middle slide rail locking the setting element is located respectively first vertical spout, The bottom of the second vertical chute, and the second spacing portion of the positioning piece in the first vertical chute is abutted against the oblique waist of the front convex closure, and the rear convex closure is integrally positioned at the rear end of the second vertical chute, so that the second spacing portion of the positioning piece in the second vertical chute is interfered with the rear convex closure in a horizontal position.

2. The sequentially movable slide for a server rack of claim 1, wherein: the elastic piece comprises a rotating shaft, two elastic arms which are symmetrical to each other are arranged at the inner side end of the rotating shaft, symmetrical convex blocks are arranged on the outer side faces of the two elastic arms respectively, and the rotating shaft is rotatably arranged in the rotating shaft hole.

3. The sequentially movable slide for a server rack of claim 2, wherein: the setting element includes the center pin, be equipped with the first spacing portion of concentric and the spacing portion of second on the center pin, form the draw-in groove between first spacing portion, the spacing portion of second, two the setting element respectively through respective draw-in groove with first vertical spout, the vertical spout sliding fit of second connect thereby the spacing portion of second salient in the lateral surface of middle slide rail, the lug of two elastic arm lateral surfaces of elastic component blocks respectively in the draw-in groove corresponding the setting element in the both ends of elastic arm are respectively two the first spacing portion top periphery butt of setting element, first spacing portion orientation a side of interior slide rail be equipped with the concentric flange of center pin.

4. The sequentially movable slide for a server rack of claim 3, wherein: the first limiting part and the second limiting part are both annular.

5. The sequentially movable slide for a server cabinet of claim 4, wherein: the tip of two elastic arms of elastic component all is equipped with the spacing portion of arc, the spacing portion of arc of two elastic arms respectively with two the top periphery cooperation butt of the first spacing portion of setting element.

6. A sequentially movable slide rail for a server cabinet according to any one of claims 1 to 5, wherein: the elastic piece is of an integrated structure made of plastic materials.