Bidirectional pull-out slide rail with closed damping

Abstract

The utility model discloses a bidirectional pull-out sliding rail with closed damping, and belongs to the technical field of sliding rails. The two-way pull-out sliding rail comprises a fixed rail, a movable rail and a damping device arranged between the fixed rail and the movable rail, the damping device comprises a base, a sliding connecting rod, a firing pin clamping head, a damper, a sliding block and an elastic traction piece, and in the pull-out process of the movable rail, a firing pin is used for driving the corresponding firing pin clamping head and the sliding block to move together. The striker chucks deflect and stay towards one side and are separated from the corresponding strikers when moving to the two ends of the base through guide sliding grooves in the base, and stretching energy storage of the elastic traction piece is achieved; in the closing process of the movable rail, the firing pin is used for pushing the firing pin clamping head on the other side to achieve reset unlocking of the deflected firing pin clamping head, the movable rail is driven to be closed slowly, and the closing stability of the two-way sliding rail is guaranteed; moreover, the damping device is simple and ingenious in structure, the bidirectional closing damping effect of the sliding rail can be achieved at the same time, and the damping closing requirement of the bidirectional sliding rail is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a slide rail, more particularly to a bidirectional pull-out slide rail with closing damping. BACKGROUND

[0002] A slide rail is a device used to guide and support the movement of an object, providing stable guidance and support to the object to keep it steady during movement and reduce friction and vibration. Slide rails are most commonly used in drawers, which are connected between the drawer and the cabinet body. Due to the structure of the slide rail, the drawer can only be opened in one direction, and cannot be opened in both directions. Users need to walk around to the opening side of the drawer to open it. In some special cases, there is a need for bidirectional opening of the drawer on both sides of the cabinet to improve the convenience of using the drawer, so there is a need to develop a bidirectional pull-out slide rail that can adapt to different scenarios.

[0003] Bidirectional opening of the drawer has the requirement of closing positioning in terms of function to ensure that the drawer can be stably kept in the closed state after closing. Currently, most existing bidirectional opening drawers use ordinary bidirectional slide rails, and additional closing positioning structures are provided between the drawer and the cabinet body. Since the closing positioning structure is independent of the slide rail itself, the relative installation position requires high precision during installation. A new slide rail bidirectional pull-out device with publication number CN217447108U has the working principle of changing the design of the card point positioning from the traditional punching concave point at both ends of the outer rail and the punching convex point at both ends of the core rail to block the steel ball, thereby achieving closing positioning of the pull-out slide rail. The outer rail is changed to punch two directionally opposite baffles at both ends, the core rail is also changed to punch two directionally opposite baffles at both ends, and the bead holder is equipped with two bead holder rubber plugs with buffering effect, thereby forming a closed loop of pull-out blocking positioning after the outer rail is bent at the pull-out end, the core rail is bent at the tail end, and the bead holder, solving the problems of difficulty in controlling the height of the punched blocking point and high precision requirement. However, the slide rail bidirectional pull-out device only involves positioning after the slide rail is pulled out, and lacks positioning when the core rail and the outer rail are closed, so it cannot limit the activity state of the closed drawer, which may cause the drawer to be accidentally opened.

[0004] In addition, since the bidirectional slide rail can be pulled out from two directions, it is easy to pass through the middle position and open from the other side when the drawer is closed. The existing slide rail damping device cannot be applied to bidirectional slide rails, so there is an urgent need to design a bidirectional pull-out slide rail with closing damping. SUMMARY

[0005] 1. Technical problem to be solved by the utility model

[0006] The utility model discloses a bidirectional pull-out slide rail with closing damping function, which is characterized by the following technical scheme.

[0007] 2. Technical scheme

[0008] To achieve the above object, the utility model provides a technical scheme as follows:

[0009] The utility model discloses a bidirectional pull-out slide rail with closing damping function, which is characterized by the following technical scheme.

[0010] Further, the base is fixedly installed on the fixed rail, the striker is arranged on the movable rail, and two strikers are arranged on the movable rail at intervals, when the movable rail is at the middle position of the fixed rail, the two strikers are just clamped with the corresponding striker heads respectively.

[0011] Further, one end of the striker head is provided with a hook part for cooperating with the striker, and the other end of the striker head is provided with a hook.

[0012] Further, the guide sliding groove comprises a straight sliding groove and a spiral bending groove located at both ends of the straight sliding groove, the straight sliding groove is arranged along the extension direction of the slide rail, and the striker head is provided with a rotary guide block capable of sliding in the guide sliding groove.

[0013] Further, the sliding connecting rod is provided with a guide column capable of sliding in the straight sliding groove.

[0014] Further, the sliding connecting rod is provided with a rotating shaft at each end, and the striker head is provided with a shaft hole in rotation connection with the rotating shaft of the corresponding end.

[0015] Further, the elastic pulling member is a tension spring.

[0016] Further, the base is provided with a damper mounting cavity at the outer side, the damper is mounted in the damper mounting cavity, the telescopic rod end of the damper is connected with the damper connecting hole on the slider of the corresponding side, and the cylinder end of the damper is in abutment with the slider of the other side.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the technical scheme has the following beneficial effects:

[0019] (1) The bidirectional pull-out slide rail with closing damping comprises a fixed rail, a movable rail capable of bidirectional sliding relative to the fixed rail, and a damping device arranged between the fixed rail and the movable rail, wherein the damping device comprises a base, a sliding connecting rod, a striker head, a damper, a slider and an elastic pulling member, the striker can drive the corresponding striker head and the slider to move together during the pulling-out process of the movable rail, the striker head is allowed to be deflected to one side and separated from the corresponding striker when moving to the two ends of the base by the guide sliding groove on the base, so that the elastic pulling member is stretched to store energy, and the striker head is allowed to be deflected to one side and separated from the corresponding striker when moving to the two ends of the base by the guide sliding groove on the base, so that the elastic pulling member is stretched to store energy; during the closing process of the movable rail, the striker can drive the striker head on the other side to reset and unlock the deflected striker head, and drive the movable rail to slowly close; the novel damping device is arranged between the fixed rail and the movable rail, so that the bidirectional pull-out slide rail has the damping closing function, the closing stability of the bidirectional slide rail is ensured, the damping device has a simple and ingenious structure, the bidirectional closing damping effect of the slide rail can be realized at the same time, and the damping closing needs of the bidirectional slide rail are met.

[0020] (2) The base of the bidirectional pull-out slide rail with closing damping is fixedly installed on the fixed rail, the striker is arranged on the movable rail, and the two strikers are arranged on the movable rail at intervals, when the movable rail is at the middle position of the fixed rail, the two strikers are just clamped with the corresponding striker heads, so that the combination tightness of the movable rail and the damping device can be ensured, stable closing positioning effect can be realized after the movable rail is closed, and the stability of the bidirectional slide rail in the closed state is ensured.

[0021] (3) The utility model discloses a two -way pull out slide rail with closed damping, one end of the striker head is equipped with the hook part for cooperating with the striker, the other end of the striker head is equipped with the hook, the slider is equipped with the pull hook for the hook connection cooperation with the hook on the corresponding striker head, the hook part can cooperate with the striker stably, the striker head pulled by the striker can move together by the hook connection of the hook and the pull hook, and the stable hook connection cooperation can be formed after the striker head is deflected, the striker head that follows can be separated from the slider of the corresponding end, thereby realizes the change of the distance between two sliders, and then drives the elastic pulling piece to stretch the energy storage, and the structure is simple and compact, and the cooperation is stable and reliable;

[0022] (4) The utility model discloses a two -way pull out slide rail with closed damping, the guide slide groove includes straight slide groove and the convolution bend groove at the both ends of straight slide groove, and the straight slide groove is set along the extension direction of slide rail, and the striker head is equipped with the rotary guide block that can slide in the guide slide groove;The guide column that can slide in the straight slide groove is equipped on the sliding link;The sliding link and the striker head are guided by the guide slide groove, and the structure is simple, and the sliding is smooth;

[0023] (5) The utility model discloses a two -way pull out slide rail with closed damping, the outside of base is equipped with damper installation cavity, and the damper is installed in the damper installation cavity, and the telescopic rod end of damper is connected with the damper connecting hole on the slider of the corresponding side, and the cylinder end of damper is abutted with the slider of the other side, and the installation of damper is convenient, and the manufacture of damping device is more convenient. DRAWINGS

[0024] Figure 1 It is the three -dimensional structure schematic drawing of a two -way pull out slide rail with closed damping of the utility model;

[0025] Figure 2 It is the plane structure schematic drawing of a two -way pull out slide rail with closed damping of the utility model;

[0026] Figure 3 It is the angle split structure schematic drawing of a two -way pull out slide rail with closed damping of the utility model;

[0027] Figure 4 It is the angle split structure schematic drawing of a two -way pull out slide rail with closed damping of the utility model;

[0028] Figure 5 It is the angle combination state structure schematic drawing of the damping device in the utility model;

[0029] Figure 6 It is the angle combination state structure schematic drawing of the damping device in the utility model;

[0030] Figure 7 It is a schematic view of a disassembled structure of the damping device in the utility model at another angle.

[0031] Figure 8 It is a schematic view of a disassembled structure of the damping device in the utility model at another angle.

[0032] Figure 9 It is a schematic view of the damping device in the utility model in a slide rail closed state.

[0033] Figure 10 It is a schematic view of the damping device in the utility model in a slide rail left side pulled out state.

[0034] Figure 11 It is a schematic view of the damping device in the utility model in a slide rail right side closed state.

[0035] Figure 12 It is a schematic view of the damping device in the utility model in a slide rail right side pulled out state.

[0036] Figure 13 It is a schematic view of the damping device in the utility model in a slide rail left side closed state.

[0037] Explanation of the reference numerals in the schematic view:

[0038] 1, fixed rail; 2, movable rail; 2-1, striker; 3, damping device; 3-1, base; 3-1-1, straight sliding groove; 3-1-2, rotary curved groove; 3-1-3, damper mounting cavity; 3-2, sliding connecting rod; 3-2-1, rotating shaft; 3-2-2, guide column; 3-3, striker clamp head; 3-3-1, hook part; 3-3-2, hook; 3-3-3, rotary guide block; 3-3-4, shaft hole; 3-4, damper; 3-5, sliding block; 3-5-1, pull hook; 3-5-2, damper connecting hole; 3-6, elastic pulling piece; 4, ball assembly. DETAILED DESCRIPTION

[0039] In order to further understand the content of the utility model, the utility model is described in detail in combination with the drawings and examples.

[0040] [EXAMPLE]

[0041] In combination with Figures 1 to 8As shown, the two-way pull-out slide rail with closing damping of the embodiment comprises a fixed rail 1 and a movable rail 2 capable of two-way sliding relative to the fixed rail 1, the fixed rail 1 is a relatively fixed part, and the movable rail 2 is a part capable of being pulled out and slid, a ball assembly 4 can be arranged between the fixed rail 1 and the movable rail 2 to ensure stable and smooth sliding of the two. The two-way pull-out slide rail with closing damping further comprises a damping device 3 arranged between the fixed rail 1 and the movable rail 2, so that the movable rail 2 can be automatically slowly pulled back when being closed, thereby forming a damping closing effect. Different from the damping device of the existing one-way slide rail, the damping device 3 in the embodiment comprises a base 3-1, a sliding connecting rod 3-2, a striker head 3-3, a damper 3-4, a sliding block 3-5 and an elastic pulling member 3-6, the sliding connecting rod 3-2 is arranged on the base 3-1 and slides along the extension direction of the slide rail, both ends of the sliding connecting rod 3-2 are rotatably provided with a striker head 3-3 capable of cooperating with a striker 2-1, both ends of the base 3-1 are respectively provided with a sliding block 3-5, the two sliding blocks 3-5 are connected by the elastic pulling member 3-6, so that the two sliding blocks 3-5 keep an elastic tendency of approaching each other, the damper 3-4 is arranged on the base 3-1, and both ends of the damper 3-4 act on the sliding blocks 3-5 at the corresponding ends, the pulling force of the elastic pulling member 3-6 is greater than the elastic force of the damper 3-4, and the damper 3-4 is used to make the sliding blocks 3-5 slowly move under the action of the pulling force of the elastic pulling member 3-6; the striker head 3-3 is hooked and cooperated with the sliding block 3-5 at the same end, that is, when the striker head 3-3 moves to the outside end of the base 3-1, it can drive the sliding block 3-5 to move together, and vice versa; the base 3-1 is provided with a guide sliding groove which cooperates with the striker head 3-3 and can make the striker head 3-3 deviate to one side and stay when moving to both ends of the base 3-1, and is separated from the corresponding striker 2-1. When the striker head 3-3 moves to the end of the guide sliding groove, it can deviate to one side under the guidance of the guide sliding groove, thereby being separated from the striker 2-1, so that the slide rail or the drawer can be normally pulled out, and at the same time, the striker head 3-3 can be positioned at the end of the guide sliding groove, keeps the elastic pulling member 3-6 and the damper 3-4 in the elongated state, and stores elastic energy for the elastic pulling member 3-6; when the slide rail or the drawer is closed, the striker head 3-3 at the other side is in a protruding state, at this time, the striker 2-1 matched therewith is in contact and pushes the striker head 3-3, the deviated striker head 3-3 is reset and unlocked under the action of the sliding connecting rod 3-2, re-hooks the striker 2-1 at the corresponding end, and slowly moves under the joint action of the elastic pulling member 3-6 and the damper 3-4, thereby realizing the damping closing of the slide rail. By adopting the above two-way pull-out slide rail, the novel damping device is arranged between the fixed rail and the movable rail, so that the two-way pull-out slide rail has the damping closing function, and the closing stability of the two-way slide rail is ensured; and the damping device has a simple and ingenious structure, can realize the two-way closing damping effect of the slide rail at the same time, and meets the damping closing needs of the two-way slide rail.

[0042] As Figures 1 to 4 shown, in this embodiment, the base 3-1 is fixedly installed on the fixed rail 1, the striker 2-1 is arranged on the movable rail 2, and two strikers 2-1 are arranged on the movable rail 2 at intervals. When the movable rail 2 is at the middle position of the fixed rail 1, the two strikers 2-1 are just clamped with the corresponding striker clamping heads 3-3 (as shown in Figure 5 ). In this way, the combination of the movable rail 2 and the damping device 3 can be ensured to be close, stable closing positioning effect can be achieved after the movable rail 2 is closed, and the stability of the bidirectional sliding rail in the closed state can be ensured. Specifically, the base 3-1 can be installed on the fixed rail 1 through the fixing screws at both ends, and the strikers 2-1 are spot-welded to the outer wall of the movable rail 2. The striker clamping heads 3-3 on both sides are connected through sliding connecting rods 3-2. When the movable rail 2 is in the closed state, the distance between the two striker clamping heads 3-3 is constant, the two strikers 2-1 are located inside the two striker clamping heads 3-3, and the strikers 2-1 on both sides are just in contact with the corresponding striker clamping heads 3-3. In this way, there is no gap between the movable rail 2 and the damping device 3, so that the movable rail 2 can be stably stopped at the closed position.

[0043] Further, one end of the striker clamping head 3-3 is provided with a clamping hook part 3-3-1 for cooperating with the striker 2-1. The clamping hook part 3-3-1 is in a protruding structure, the inner side of which can hook the striker 2-1, and the outer side is a guide slope. When the movable rail 2 is pulled open to one side, the striker 2-1 in front of the pulling direction is separated from the deflected striker clamping head 3-3. At this time, the two striker clamping heads 3-3 no longer move, and the two strikers 2-1 can continue to move outward. When the movable rail 2 is closed from the open state to the middle, the striker 2-1 in front of the closing direction first passes through the deflected striker clamping head 3-3 and then collides with the striker clamping head 3-3 in a protruding state to generate a pulling force, so that the deflected striker clamping head 3-3 is unlocked and hooks the corresponding striker 2-1 to slowly rebound together. In this process, the guide slope on the outer side of the clamping hook part 3-3-1 can play a guiding role, preventing the striker 2-1 from being blocked by the deflected striker clamping head 3-3 and affecting the smooth passing of the striker 2-1 over the striker clamping head 3-3, and improving the cooperation stability of the striker 2-1 and the striker clamping head 3-3. The other end of the striker clamping head 3-3 is provided with a bent hook 3-3-2, and the sliding block 3-5 is provided with a pulling hook 3-5-1 for hooking and cooperating with the bent hook 3-3-2 on the corresponding striker clamping head 3-3. The striker clamping head 3-3 pulled by the striker 2-1 can move together by hooking the bent hook 3-3-2 and the pulling hook 3-5-1, and can form a stable hooking cooperation after the striker clamping head 3-3 is deflected, avoiding accidental unlocking and rebounding of the striker clamping head 3-3. The striker clamping head 3-3 can be separated from the corresponding sliding block 3-5, so as to change the distance between the two sliding blocks 3-5, and then drive the elastic pulling member 3-6 to stretch and store energy, which is simple, compact, stable and reliable.

[0044] As Figures 6 to 8 shown in the embodiment, the guiding slot comprises a straight slot 3-1-1 and a rotary curved slot 3-1-2 at both ends of the straight slot 3-1-1, the straight slot 3-1-1 is arranged along the extension direction of the slide rail, and the striker head 3-3 is provided with a rotary guide block 3-3-3 capable of sliding in the guiding slot. When the striker head 3-3 moves from the straight slot 3-1-1 to the rotary curved slot 3-1-2, the rotary guide block 3-3-3 transitions from the straight slot 3-1-1 to the rotary curved slot 3-1-2, thereby driving the striker head 3-3 to swing to one side, and the corresponding slider 3-5 has a certain pulling effect on the swung striker head 3-3 by means of the pull hook 3-5-1, and the end of the sliding link 3-2 limits the hook 3-3-2 of the striker head 3-3, thereby enabling the striker head 3-3 to be stably maintained at the rotary curved slot 3-1-2. During the closing process of the slide rail, the striker 2-1 on the front side of the closing direction first passes through the swung striker head 3-3 and then collides with the protruding striker head 3-3 to generate a pulling force, which is transmitted to the swung striker head 3-3 through the sliding link 3-2, thereby pulling the striker head 3-3 on this side from the rotary curved slot 3-1-2 to the straight slot 3-1-1, and realizing the reset and unlocking of the swung striker head 3-3. In addition, the sliding link 3-2 can also be guided by the straight slot 3-1-1, specifically, the sliding link 3-2 is provided with a guide column 3-2-2 capable of sliding in the straight slot 3-1-1, and the guide column 3-2-2 can be arranged at least in two positions, for example, one guide column 3-2-2 is arranged at each end of the sliding link 3-2, so that the sliding link 3-2 can slide in the straight slot 3-1-1. In the embodiment, the sliding link 3-2 and the striker head 3-3 are guided by the guiding slot, which is simple in structure and smooth in sliding.

[0045] Referring Figure 7 and Figure 8As shown, in the embodiment, the two ends of the sliding link 3-2 are respectively provided with rotating shafts 3-2-1, the striker clamping head 3-3 is provided with an axle hole 3-3-4 rotatably connected with the rotating shaft 3-2-1 of the corresponding end, the axle hole 3-3-4 of the striker clamping head 3-3 is sleeved on the rotating shaft 3-2-1, the rotating connection between the striker clamping head 3-3 and the sliding link 3-2 is realized, and the assembly of the damping device 3 is facilitated. The elastic pulling member 3-6 is preferably a tension spring, the two ends of the tension spring are respectively connected with the sliding block 3-5 on the corresponding side through clamping connection, and the tension spring is used for generating the automatic closing tension. In order to facilitate the installation of the damper 3-4, the damper installation cavity 3-1-3 is arranged on the outer side of the base 3-1, the damper 3-4 is installed in the damper installation cavity 3-1-3, the telescopic rod end of the damper 3-4 is connected with the damper connecting hole 3-5-2 on the sliding block 3-5 on the corresponding side, and the cylinder end of the damper 3-4 abuts against the sliding block 3-5 on the other side. When the damper 3-4 is installed, the damper 3-4 can be compressed and installed in the damper installation cavity 3-1-3, the damper 3-4 is automatically popped out after being released, the telescopic rod end of the damper 3-4 is inserted into the damper connecting hole 3-5-2 of the sliding block 3-5 on one side, and the cylinder end abuts against the sliding block 3-5 on the other side.

[0046] In order to further understand the technical scheme of the utility model, now combining the specific embodiments of the utility model will be described in detail. Figures 9 to 13 Further, the working principle of the utility model will be described.

[0047] Figure 9 As shown, the schematic diagram shows that the damping device is in the slide rail closed state, in this state, the two striker clamping heads 3-3 are all in the protruding state, the two strikers 2-1 on the movable rail 2 are respectively matched with the striker clamping heads 3-3 on the corresponding side, the movable rail 2 can be pulled to the left side or the right side, the striker clamping head 3-3 on the corresponding side is driven to move together through the striker 2-1, so that the elastic pulling member 3-6 is stretched to store energy, and the damper 3-4 is elongated to generate the closing damping. In this state, the movable rail 2 can be kept in the closed state under the action of the elastic pulling member 3-6.

[0048] As shown, Figure 10 When the movable rail 2 is pulled out to the left side, the two strikers 2-1 move to the left side together, the striker 2-1 on the front side of the pulling-out direction drives the corresponding striker clamping head 3-3 to move together, and the striker clamping head 3-3 on the other side is followed by the sliding link 3-2; when the striker clamping head 3-3 on the front side of the pulling-out direction moves to the rotary bend groove 3-1-2, it is deflected to one side under the guidance of the rotary bend groove 3-1-2 until it is separated from the striker 2-1, at this time, the stretching and energy storage of the elastic pulling member 3-6 can be completed, and the movable rail 2 can continue to be pulled out to the left side.

[0049] As shown, Figure 11As shown in the drawing, when the movable rail 2 is closed from the left side to the right side, the two impact pins 2-1 pass the left side swing impact pin catch 3-3 respectively, the impact pin 2-1 in the front of the closing direction contacts the impact pin catch 3-3 in the protruding state and generates a pulling force on the impact pin catch 3-3, at this time, the swing impact pin catch 3-3 is pulled by the sliding connecting rod 3-2 to move from the inside of the swing curved groove 3-1-2 to the direction of the straight sliding groove 3-1-1, thereby promoting the swing impact pin catch 3-3 to restore the protruding state and hook the corresponding impact pin 2-1; at this time, under the joint action of the elastic pulling member 3-6 and the damper 3-4, the movable rail 2 can be driven to continue to slowly and automatically close to the right side.

[0050] Similarly, as shown in the drawing, Figure 12 When the movable rail 2 is pulled out to the right side, the two impact pins 2-1 move to the right side together, the impact pin 2-1 in the front of the pulling-out direction (i.e. the impact pin 2-1 on the right side) drives the corresponding impact pin catch 3-3 to move together, and the impact pin catch 3-3 on the other side is followed by the sliding connecting rod 3-2; when the impact pin catch 3-3 in the front of the pulling-out direction moves to the swing curved groove 3-1-2, it swings to one side under the guidance of the swing curved groove 3-1-2 until it is separated from the impact pin 2-1, at this time, the stretching energy storage of the elastic pulling member 3-6 can be completed, and the movable rail 2 can continue to be pulled out to the right side.

[0051] As shown in the drawing, Figure 13 When the movable rail 2 is closed from the right side to the left side, the two impact pins 2-1 pass the right side swing impact pin catch 3-3 respectively, the impact pin 2-1 in the front of the closing direction (i.e. the impact pin 2-1 on the left side) contacts the impact pin catch 3-3 in the protruding state and generates a pulling force on the impact pin catch 3-3, at this time, the swing impact pin catch 3-3 is pulled by the sliding connecting rod 3-2 to move from the inside of the swing curved groove 3-1-2 to the direction of the straight sliding groove 3-1-1, thereby promoting the swing impact pin catch 3-3 to restore the protruding state and hook the corresponding impact pin 2-1; at this time, under the joint action of the elastic pulling member 3-6 and the damper 3-4, the movable rail 2 can be driven to continue to slowly and automatically close to the left side.

[0052] The utility model discloses a two -way pull out slide rail with closing damping, through setting up novel damper between fixed rail and movable rail, make two -way pull out slide rail have damping closing function, guarantee the closing stability of two -way slide rail, and, this damper simple and ingenious structure can realize the two -way closing damping effect of slide rail simultaneously, has met the damping closing need of two -way slide rail.

[0053] The utility model is described above and its embodiments are described schematically, which is not restrictive, and the drawings only show one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the utility model, without departing from the purpose of the utility model, similar structural modes and embodiments are designed without creativity, which should belong to the protection scope of the utility model.

Claims

1. A bidirectional pull-out slide rail with closing damping, comprising a fixed rail (1) and a movable rail (2) capable of bidirectional sliding relative to the fixed rail (1), characterized in that: a damping device (3) is arranged between the fixed rail (1) and the movable rail (2), the damping device (3) comprising a base (3-1), a sliding link (3-2), a striker catch (3-3), a damper (3-4), a sliding block (3-5) and an elastic tension member (3-6), the sliding link (3-2) being arranged on the base (3-1) and capable of sliding in the extension direction of the slide rail, both ends of the sliding link (3-2) being rotatably provided with a striker catch (3-3) capable of cooperating with a striker (2-1), both ends of the base (3-1) being provided with a sliding block (3-5), the two sliding blocks (3-5) being connected by the elastic tension member (3-6), the damper (3-4) being arranged on the base (3-1) and capable of acting on the sliding blocks (3-5) at both ends, the tension of the elastic tension member (3-6) being greater than the elastic force of the damper (3-4), the striker catch (3-3) being hooked and cooperated with the sliding block (3-5) at the same end, the base (3-1) being provided with a guide slot cooperated with the striker catch (3-3) and capable of making the striker catch (3-3) swing to one side and stay when moving to both ends of the base (3-1) and separated from the corresponding striker (2-1). The base (3-1) is fixedly installed on the fixed rail (1), the striker (2-1) is arranged on the movable rail (2), and the striker (2-1) is arranged at two positions on the movable rail (2), when the movable rail (2) is in the middle position of the fixed rail (1), the two strikers (2-1) are respectively hooked with the corresponding striker catch (3-3).

2. The bi-directional pull-out slide rail with closure damping according to claim 1, wherein: One end of the striker catch (3-3) is provided with a hook part (3-3-1) for cooperating with the striker (2-1), the other end of the striker catch (3-3) is provided with a hook (3-3-2), the sliding block (3-5) is provided with a pull hook (3-5-1) for hooking and cooperating with the hook (3-3-2) on the corresponding striker catch (3-3).

3. The bidirectional pull-out slide rail with closure damping according to claim 1 or 2, characterized in that: The guide slot comprises a straight slot (3-1-1) and a spiral bent slot (3-1-2) at both ends of the straight slot (3-1-1), the straight slot (3-1-1) extends along the extension direction of the slide rail, the striker catch (3-3) is provided with a rotary guide block (3-3-3) capable of sliding in the guide slot.

4. The bi-directional pull-out slide rail with closure damping according to claim 3, wherein: The sliding link (3-2) is provided with a guide column (3-2-2) capable of sliding in the straight slot (3-1-1).

5. The bi-directional pull-out tray slide with closure damping according to claim 4, characterized in that: Both ends of the sliding link (3-2) are respectively provided with a rotating shaft (3-2-1), the striker catch (3-3) is provided with a shaft hole (3-3-4) rotatably connected with the rotating shaft (3-2-1) at the corresponding end.

6. The bi-directional pull-out tray slide with closure damping according to claim 4, wherein: The elastic tension member (3-6) is a tension spring.

7. The bi-directional pull-out drawer slide with closure damping of claim 1, wherein: ​ 8. The bi-directional pull-out tray slide with closure damping according to claim 7, characterized in that: The outer side of the base (3-1) is provided with a damper mounting cavity (3-1-3), the damper (3-4) is mounted in the damper mounting cavity (3-1-3), the telescopic rod end of the damper (3-4) is connected with the damper connecting hole (3-5-2) on the slider (3-5) of the corresponding side, and the cylinder end of the damper (3-4) abuts against the slider (3-5) on the other side.

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