A slide rail assembly with a gear and rack linkage mechanism and a drawer slide rail

Abstract

This utility model discloses a slide rail assembly and drawer slide rail with a gear and rack linkage mechanism. The slide rail assembly includes a bracket, a lower rail mounted on the bracket, a middle rail mounted on the lower rail, and an upper rail mounted on the middle rail. An upper load-bearing roller group is provided between the upper rail and the middle rail, and a lower load-bearing roller group is provided between the lower rail and the middle rail. A gear and rack transmission mechanism is provided between the upper rail and the middle rail, and between the middle rail and the lower rail, wherein the gear and rack transmission mechanism is located on the outer surfaces of the upper rail, middle rail, and lower rail. The slide rail assembly of this utility model can achieve synchronous linkage between the upper rail and the middle rail, and opening or closing is smoother and more precise.

Description

Technical Field

[0001] This utility model belongs to the field of home furnishing manufacturing, specifically relating to a slide rail assembly with a gear and rack linkage mechanism and a drawer slide rail. Background Technology

[0002] Most drawers on the market use three-section concealed slides to allow them to slide outwards or retract inwards. The main components of these slides include a bottom slide, a top slide, and a middle slide positioned between them; (e.g., application publication number CN 118948055). Patent A discloses "a three-section concealed synchronous stabilizing slide rail". The three-section concealed synchronous stabilizing slide rail includes a bracket, a lower rail mounted on the bracket, a middle rail mounted on the lower rail, and an upper rail mounted on the middle rail. A groove is provided in the middle of the middle rail; the groove extends along the length of the middle rail; a first upper mounting gap is formed between the groove and the inner top surface of the upper rail; the left and right sides of the upper end of the middle rail extend horizontally outwards, forming second upper mounting gaps with the left and right sides of the upper rail respectively; a first lower mounting gap is formed between the bottom of the middle rail and the inner bottom surface of the lower rail; a second lower mounting gap and a third lower mounting gap are formed between the left and right sides of the lower end of the middle rail and the left and right sides of the lower rail respectively; an upper load-bearing wheel assembly is provided between the upper rail and the middle rail, and a lower load-bearing wheel assembly is provided between the lower rail and the middle rail. The upper load-bearing wheel assembly includes an upper... The upper load-bearing frame includes a first upper load-bearing component located in the middle of the upper load-bearing frame, and second and third upper load-bearing components located on the left and right sides of the upper load-bearing frame. The first upper load-bearing component is located within the first upper mounting gap; the second and third upper load-bearing components are both located within the second upper mounting gap. The lower load-bearing wheel assembly includes a lower load-bearing frame, a first lower load-bearing component located in the middle of the lower load-bearing frame, and second and third lower load-bearing components located on the left and right sides of the lower load-bearing frame. The first lower load-bearing component is located within the first and third lower mounting gaps; the second and third lower load-bearing components are located within the second and third lower mounting gaps, respectively. A rack and pinion transmission mechanism is provided between the upper load-bearing frame and the middle rail, and between the lower load-bearing frame and the middle rail. The three-section concealed synchronous stabilizing slide rail has a gear and rack transmission mechanism between the upper support frame and the middle rail, and between the lower support frame and the middle rail. Through the constraint relationship of the gear and rack transmission mechanism, the movement of the upper rail and the middle rail can be mutually constrained, thereby avoiding problems such as overlapping, sliding in, collision, or misalignment of the middle rail, thus ensuring the stability and reliability of the three-section concealed synchronous stabilizing slide rail.

[0003] However, the above three-section concealed synchronous stabilizing slide rail has the following shortcomings:

[0004] In the aforementioned three-section concealed synchronous stable slide rail, a gear and rack transmission mechanism is provided between the upper support frame and the middle rail, and between the lower support frame and the middle rail. Although the gear and rack transmission mechanism can achieve synchronous linkage between the upper and middle rails, since the gears / racks in the rack transmission mechanism are located on the upper and lower support frames, this structure is equivalent to only achieving linkage between the upper and lower support frames and the middle rail. When the force on the upper rail is greater than the frictional force between the upper support wheel frame and the upper rail, or when the force on the middle rail is greater than the frictional force between the lower support wheel frame and the middle rail, the problem of slippage will occur, that is, relative sliding will occur between the upper rail and the upper support wheel frame, or between the middle rail and the lower support wheel frame, thus affecting the accuracy of the slide rail. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a slide rail assembly with a gear and rack linkage mechanism. The slide rail assembly can realize synchronous linkage between the upper rail and the middle rail, and the opening or closing is smoother and more precise.

[0006] Another objective of this utility model is to provide a drawer slide using the above-mentioned slide rail assembly with a gear and rack linkage mechanism.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is:

[0008] A slide rail assembly with a gear and rack linkage mechanism includes a bracket, a lower rail disposed on the bracket, a middle rail disposed on the lower rail, and an upper rail disposed on the middle rail, wherein an upper load-bearing wheel set is disposed between the upper rail and the middle rail, and a lower load-bearing wheel set is disposed between the lower rail and the middle rail.

[0009] A rack and pinion transmission mechanism is provided between the upper rail and the middle rail, and between the middle rail and the lower rail, wherein the rack and pinion transmission mechanism is located on the outer surface of the upper rail, the middle rail and the lower rail.

[0010] Preferably, the gear and rack transmission mechanism includes a first rack disposed on the outer side of the upper rail, a gear disposed on the outer side of the middle rail, and a second rack disposed on the outer side of the lower rail, wherein the gear is rotatably connected to the middle rail, and the upper and lower sides of the gear mesh with the first rack and the second rack, respectively.

[0011] Preferably, the gear and rack transmission mechanism includes a first gear disposed on the outer side of the upper rail, a rack disposed on the outer side of the middle rail, and a second gear disposed on the outer side of the lower rail, wherein the upper side of the rack is provided with a first gear tooth that meshes with the first gear, and the lower side is provided with a second gear tooth that meshes with the second gear.

[0012] Preferably, the gear and rack transmission mechanism includes a first gear disposed on the outer side of the upper rail, a rack disposed on the outer side of the middle rail, and a second gear disposed on the outer side of the lower rail. The rack consists of two sets, namely a first rack and a second rack, wherein the first rack and the second rack are arranged in parallel, the first rack meshes with the first gear, and the second rack meshes with the second gear.

[0013] A drawer slide rail includes a slide rail assembly with a rack and pinion linkage mechanism and a rebound damper, wherein,

[0014] The rebound damper includes a damping frame, a pusher component disposed within the damping frame, a damper, and a rebounder. The pusher component includes a first push block and a second push block. The first push block is rotatably connected to the second push block via a pin. A groove is provided on the first push block. The damping frame is connected to both the first and second push blocks via a first sliding structure. The first sliding structure includes a first sliding member disposed on the first and second push blocks and a first sliding groove disposed on the damping frame, wherein the first sliding groove extends along the length of the damping frame. The damping rod of the damper is connected to the second push block. The rebounder includes an elastic component, one end of which is mounted on the damping frame, and the other end is mounted on the second push block.

[0015] Preferably, the rebound damper further includes a rebound stroke adjustment mechanism, which includes a locking structure and a stroke selection mechanism. The locking structure includes multiple sets of first locking grooves disposed on the damping frame and a first locking block disposed on the first pushing block. The multiple sets of first locking grooves are arranged in parallel, and their upper ends are all connected to the first sliding groove. The stroke selection mechanism includes a bridge slider and a stroke selection drive mechanism for driving the bridge slider to move along the length direction of the damping frame. When the first pushing block moves above the bridge slider, the bridge slider is used to support the bottom of the first pushing block. When the first pushing block passes the bridge slider, the first pushing block swings downward and enters the corresponding first locking groove.

[0016] Preferably, the first locking groove is arc-shaped, and the arc of the first locking groove is the same as the arc of the first pushing block swinging downward.

[0017] Preferably, the second sliding structure includes a second slide groove disposed on the damping frame, the second slide groove extending through the damping frame along the width direction of the damper; the bridge slider is installed in the second slide groove, and one end of it passes through the second slide groove and extends to the outside of the damping frame to connect with the stroke selection drive mechanism.

[0018] Preferably, the stroke selection drive mechanism includes an unlocking switch plate; the unlocking switch plate is mounted on the side of the damping frame via a third sliding structure, and the unlocking switch plate is provided with a drive groove that cooperates with the bridge slider.

[0019] Preferably, a torsion spring is provided on the pin, and the elastic force of the torsion spring causes the first push block to swing downward.

[0020] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0021] 1. In the slide rail assembly with gear and rack linkage mechanism of this utility model, the upper rail and the middle rail are connected by a gear and rack transmission mechanism, and the middle rail and the lower rail are also connected by a gear and rack transmission mechanism. Therefore, when the upper rail moves, it will inevitably drive the middle rail to move, and the moving stroke of the upper rail and the moving stroke of the middle rail are the same. At the same time, it can also avoid relative slippage between the upper rail and the upper load-bearing wheel group, and between the lower rail and the lower load-bearing wheel group, thereby achieving precise control of the sliding stroke of the sliding assembly.

[0022] 2. In the slide rail assembly with gear and rack linkage mechanism of this utility model, the gear and rack transmission mechanism is located on the outside of the upper rail, middle rail and lower rail. This allows for maintenance of the gear and rack transmission mechanism without disassembling the slide rail assembly of this utility model, making operation more convenient.

[0023] 3. The rebound damper in this utility model selects the position of the bridge slider through the stroke selection drive mechanism. When the first push block moves to pass the bridge slider, since the bridge slider loses its support for the bottom of the first push block, the first locking block in the first push block will enter the corresponding first locking groove under the weight of the first push block itself or an external force (such as a torsion spring set on the pin), thereby realizing the selection of the damping stroke.

[0024] 4. The rebound damper in this utility model can be selected according to the actual application scenario, which makes it more applicable and has a good market prospect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the drawer slide of this utility model.

[0026] Figure 2This is a 3D view of the rebound damper.

[0027] Figure 3 This is an exploded view of the rebound damper.

[0028] Figure 4 A 3D view of the unlock switch board.

[0029] Figure 5 and Figure 6 These are two perspective views of the damping frame.

[0030] Figure 7 and Figure 8 Two three-dimensional views of the actuator from different perspectives.

[0031] Figure 9 This is a 3D view of the bridge slider.

[0032] Figure 10 and Figure 11 These are two 3D views of the bridge slider located at the far right.

[0033] Figure 12 and Figure 13 These are two 3D views of the bridge slider located at the far left.

[0034] Figure 14 This is a schematic diagram showing the position of the first locking block in the first pushing block before it enters the locking groove A.

[0035] Figure 15 This is a schematic diagram showing the position of the first locking block in the first pushing block after it enters the locking groove A.

[0036] Figure 16 This is a schematic diagram showing the position of the first locking block in the first pushing block before it enters the locking groove B.

[0037] Figure 17 This is a schematic diagram showing the position of the first locking block in the first pushing block after it enters the locking groove B.

[0038] Figure 18 This is a 3D view of the slide rail assembly.

[0039] Figure 19 This is an exploded view of the slide rail assembly.

[0040] Figure 20 This is a schematic diagram showing the unfolded state of the slide rail assembly.

[0041] Figure 21 This is a schematic diagram of the closed state of the slide rail assembly.

[0042] Figure 22 This is a schematic diagram of the upper rail structure.

[0043] Figure 23 This is a schematic diagram of the middle track structure.

[0044] Figure 24 This is a schematic diagram of the lower rail structure.

[0045] Figure 25 This is a side view of the slide rail assembly.

[0046] Figure 26 and Figure 27 These are three-dimensional diagrams of two different types of upper load-bearing wheel assemblies.

[0047] Figure 28 and Figure 29 These are three-dimensional diagrams of two different types of lower load-bearing wheel assemblies.

[0048] Figure 30 This is a schematic diagram of the installation of the drawer slide rail of this utility model. Detailed Implementation

[0049] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0050] Example 1

[0051] See Figures 1-30 The drawer slide of this utility model includes a slide assembly and a rebound damper.

[0052] The rebound damper includes a damping frame 2 and a pusher, a damper 3 and a rebounder disposed within the damping frame 2.

[0053] See Figures 1-30 The pushing component includes a first pushing block 4 and a second pushing block 5. The first pushing block 4 is rotatably connected to the second pushing block 5 via a pin 501, and a torsion spring can be provided at the rotatable connection. The spring force of the torsion spring causes the first pushing block 4 to swing downward. When no torsion spring is provided, the first pushing block 4 can swing downward by its own weight. The first pushing block 4 is provided with a groove 401, and the height of the side of the groove 401 away from the second pushing block 5 is lower than the height of the side closer to the second pushing block 5. The damping frame 2 is connected to the first pushing block 4 and the second pushing block 5 respectively via a first sliding structure. The first sliding structure includes a first sliding member (e.g., a sliding column) provided on the first pushing block 4 and the second pushing block 5 and a first sliding groove 201 provided on the damping frame 2. The first sliding groove 201 extends along the length direction of the damping frame 2.

[0054] See Figures 1-30 The damping rod of the damper 3 is connected to the second push block 5.

[0055] See Figures 1-30 The rebounder includes an elastic component, one end of which is mounted on the damping frame 2 and the other end is mounted on the second push block 5; in this embodiment, the elastic component is a tension spring 7.

[0056] See Figures 1-30 The rebound damper 3 of this utility model also includes a damping stroke adjustment mechanism, which includes a locking structure and a stroke selection mechanism.

[0057] The locking structure includes multiple sets of first locking grooves disposed on the damping frame 2 and a first locking block 402 disposed on the first pushing block 4; the multiple sets of first locking grooves are arranged in parallel, and their upper ends are all connected to the first sliding groove 201; each set of first locking grooves is arc-shaped, and the arc of the first locking groove is the same as the arc of the first pushing block 4 swinging downward, so that the first pushing block 4 can swing downward and enter the corresponding first locking groove;

[0058] The stroke selection mechanism includes a bridge slider 6 and a stroke selection drive mechanism for driving the bridge slider 6 to move along the length direction of the damping frame 2. The bridge slider 6 is mounted on the damping frame 2 via a second sliding structure. The second sliding structure includes a second groove 204 disposed on the damping frame 2, which extends through the damping frame 2 along the width direction of the damper 3. The bridge slider 6 is installed in the second groove 204, and one end of it passes through the second groove 204 and extends to the outside of the damping frame 2, and is connected to the stroke selection drive mechanism.

[0059] When the first pushing block 4 moves above the bridge slider 6, the bridge slider 6 is used to support the bottom of the first pushing block 4; when the first pushing block 4 passes the bridge slider 6, the first pushing block 4 swings downward and enters the corresponding first locking groove.

[0060] In this embodiment, the first locking groove consists of two sets, namely locking groove A202 and locking groove B203.

[0061] See Figures 1-30 The stroke selection drive mechanism includes an unlocking switch plate 1, which is mounted on the side of the damping frame 2 via a third sliding structure. The unlocking switch plate 1 cooperates with the drive groove 101 of the bridge slider 6. In this embodiment, the third sliding structure can be implemented with reference to the first sliding structure and the second sliding structure.

[0062] With the above settings, when it is necessary to adjust the position of the bridge slider 6 in the second slide groove 204, the unlocking switch plate 1 can be pushed forward or backward, thereby driving the bridge slider 6 located in the drive groove 101 to move in the second slide groove 204, thereby adjusting the position of the bridge slider 6 in the second slide groove 204. In this embodiment, when the bridge slider 6 moves to the rightmost end of the second slide groove 204, the first locking block 402 on the first push block 4 will cooperate with the locking groove A202; and when the bridge slider 6 moves to the leftmost end of the second slide groove 204, the first locking block 402 on the first push block 4 will cooperate with the locking groove B203, thereby selecting different damping strokes.

[0063] See Figures 1-30 A second locking groove 205 is provided in the second slide groove 204 near the first locking groove (i.e., the leftmost end of the second slide groove 204). A second locking block 601 is provided on the side opposite to the second locking groove 205. When the bridge slider 6 moves to the leftmost end, the second locking block 601 in the bridge slider 6 will cooperate with the second locking groove 205 on the second slide groove 204, thereby restricting the bridge slider 6 to that position. In addition, the second locking groove 205 can also be provided at the rightmost end of the second slide groove 204. Correspondingly, the second locking block 601 can also be provided on the other side of the bridge slider 6. This can restrict the bridge slider 6 to the leftmost or rightmost end of the second slide groove 204, thereby preventing the bridge slider 6 from sliding during contact with the first pushing block 4.

[0064] See Figures 1-30 The damping frame 2 has a limiting block 206 on the side of the second slide groove 204 opposite to the second locking groove 205 for restricting the movement of the second pushing block 5. By setting the limiting block 206, the maximum movement stroke of the second pushing block 5 is limited, that is, at the maximum movement stroke, the first locking block 402 on the first pushing member is exactly located at the opening of the locking groove B203.

[0065] See Figures 1-30 A cover plate 8 is provided on the other side of the damping frame 2. By assembling the cover plate 8 with the damping frame 2, a complete shell structure is formed, so that each component of the damper 3 in this utility model is hidden in the sealed cavity formed by the cover plate 8 and the damping frame 2, thereby protecting each component.

[0066] See Figures 1-30The slide rail assembly includes a bracket 8, a lower rail 11 disposed on the bracket 8, a middle rail 10 disposed on the lower rail 11, and an upper rail 9 disposed on the middle rail 10. An upper load-bearing roller group 15 is disposed between the upper rail 9 and the middle rail 10, and a lower load-bearing roller group 16 is disposed between the lower rail 11 and the middle rail 10.

[0067] A gear and rack transmission mechanism is provided between the upper rail 9 and the middle rail 10, and between the middle rail 10 and the lower rail 11, wherein the gear and rack transmission mechanism is located on the outer side of the upper rail 9, the middle rail 10 and the lower rail 11.

[0068] The gear and rack transmission mechanism includes a first rack 12 disposed on the outer side of the upper rail 9, a gear disposed on the outer side of the middle rail 10, and a second rack 14 disposed on the outer side of the lower rail 11. The gear 13 is rotatably connected to the middle rail 10, and the upper and lower sides of the gear 13 mesh with the first rack 12 and the second rack 14, respectively.

[0069] In this embodiment, the specific structures of the upper rail 9, middle rail 10, lower rail 11, upper load-bearing wheel group 15 and lower load-bearing wheel group 16 can be implemented with reference to the relevant structures in the invention patent application "A Three-Section Hidden Synchronous Stable Slide Rail" published with application publication number CN118948055A, and will not be described in detail here.

[0070] Since the upper rail 9 and the middle rail 10 are connected by a gear and rack transmission mechanism, and the middle rail 10 and the lower rail 11 are also connected by a gear and rack transmission mechanism, the movement of the upper rail 9 will inevitably drive the movement of the middle rail 10. Moreover, the travel distance of the upper rail 9 and the middle rail 10 is the same. At the same time, it can also prevent relative slippage between the upper rail 9 and the upper load-bearing wheel group 15, and between the lower rail 11 and the lower load-bearing wheel group 16, thereby achieving precise control of the sliding stroke of the sliding components.

[0071] See Figures 1-30 The working principle of the drawer slide of this utility model is as follows:

[0072] First, the damping frame 2 / cover plate 8 of the rebound damper in this utility model is installed on a fixed component (e.g., the lower rail 11 in the slide rail assembly or the cabinet 17), and the upper rail 9 in the slide rail assembly is connected to the first push block 4 through a connector; or the damping frame 2 / cover plate 8 of the rebound damper in this utility model is installed on a moving component (e.g., the upper rail 9 in the slide rail assembly), and the cabinet 17 is connected to the first push block 4 through a connector; thereby enabling relative movement between the damping frame 2 / cover plate 8 and the first push block 4, wherein the connector is a connecting block, one end of which is installed on the upper rail 9, and the other end extends into the groove 401 of the first push block 4.

[0073] The following example illustrates the working principle of the rebound damper in this utility model: "The damping frame 2 / cover plate 8 of the rebound damper in this utility model is installed on a fixed component (such as the lower rail 11 in the slide rail or the cabinet 17), and the upper rail 9 in the slide rail assembly is connected to the first push block 4 through a connector."

[0074] When the upper rail 9 moves outward, it drives the first pushing block 4 to move outward. At this time, the damping rod in the damper 3 extends outward, while the elastic component is in a stretched state. The damping stroke is selected by controlling the position of the bridge slider 6, i.e., by driving the bridge slider 6 to move through the stroke selection drive mechanism. Specifically:

[0075] When the bridge slider 6 is at the rightmost end, after the first pushing block 4 moves past the bridge slider 6, it loses the support of the bridge slider 6. Therefore, under the action of its own weight or the elastic force of the torsion spring, the first pushing block 4 will swing downward and enter the locking groove A202, so that the vertically set groove 401 becomes inclined. As the upper rail 9 continues to move outward, the connecting piece (e.g., connecting block) disengages from the groove 401 of the first pushing block 4, so that the upper rail 9 can continue to move outward.

[0076] When the bridge slider 6 is at the leftmost end, when the first pushing block 4 moves to the opening of the locking groove A202, due to the support of the bridge slider 6, the first pushing block 4 will not swing downward into the locking groove A202. Moreover, as the upper rail 9 continues to move until the first pushing block 4 passes the bridge slider 6, due to the loss of the support of the bridge slider 6, the first pushing block 4 will swing downward under its own weight or the elastic force of the torsion spring, thereby entering the locking groove B203, so that the vertically set groove 401 becomes inclined. As the upper rail 9 continues to move outward, the connecting member (e.g., connecting block) disengages from the groove 401 of the first pushing block 4, so that the upper rail 9 can continue to move outward.

[0077] When the upper rail 9 moves inward (e.g., when the drawer is closed), the connector on the upper rail 9 will re-enter the groove 401. As the upper rail 9 continues to move inward, the connector will push the first push block 4 to the right, causing the first locking block 402 in the first push block 4 to disengage from the locking groove A202 or the locking groove B203. At the moment of disengagement, the first locking block 402 in the first push block 4 enters the first slide groove 201, causing the groove 401 to change from an inclined state to a vertical state, thereby clamping the connector connected to the upper rail 9. The elastic component (e.g., tension spring 7) pulls the first push block 4 inward, thereby driving the upper rail 9 to move inward.

[0078] During the above process, the bridge slider 6 is moved by the stroke selection drive mechanism, thereby changing the support position of the bridge slider 6, so as to cause the first locking block 402 in the first push block 4 to enter the locking groove A202 or the locking groove B203, thereby selecting different damping strokes and rebound strokes.

[0079] Example 2

[0080] The difference between this embodiment and Embodiment 1 is that:

[0081] The gear and rack transmission mechanism includes a first gear disposed on the outer side of the upper rail, a rack disposed on the outer side of the middle rail, and a second gear disposed on the outer side of the lower rail. The rack has a first tooth on its upper side that meshes with the first gear, and a second tooth on its lower side that meshes with the second gear.

[0082] Example 3

[0083] The difference between this embodiment and Embodiment 1 is that:

[0084] The gear and rack transmission mechanism includes a first gear disposed on the outer side of the upper rail, a rack disposed on the outer side of the middle rail, and a second gear disposed on the outer side of the lower rail. The rack consists of two sets, namely a first rack and a second rack, wherein the first rack and the second rack are arranged in parallel, the first rack meshes with the first gear, and the second rack meshes with the second gear.

[0085] The above are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A slide rail assembly with a rack and pinion linkage mechanism, comprising a bracket, a lower rail arranged on the bracket, a middle rail arranged on the lower rail, and an upper rail arranged on the middle rail, wherein, An upper load-bearing roller assembly is provided between the upper rail and the middle rail, and a lower load-bearing roller assembly is provided between the lower rail and the middle rail; The feature is that a gear and rack transmission mechanism is provided between the upper rail and the middle rail, and between the middle rail and the lower rail, wherein the gear and rack transmission mechanism is located on the outer surface of the upper rail, the middle rail and the lower rail.

2. The gear and rack link slide assembly of claim 1, wherein, The gear and rack transmission mechanism includes a first rack disposed on the outer side of the upper rail, a gear disposed on the outer side of the middle rail, and a second rack disposed on the outer side of the lower rail. The gear is rotatably connected to the middle rail, and the upper and lower sides of the gear mesh with the first rack and the second rack, respectively.

3. The gear and rack link slide assembly of claim 1, wherein, The gear and rack transmission mechanism includes a first gear disposed on the outer side of the upper rail, a rack disposed on the outer side of the middle rail, and a second gear disposed on the outer side of the lower rail. The rack has a first tooth on its upper side that meshes with the first gear, and a second tooth on its lower side that meshes with the second gear.

4. The slide rail assembly with a gear and rack linkage mechanism according to claim 1, characterized in that, The gear and rack transmission mechanism includes a first gear disposed on the outer side of the upper rail, a rack disposed on the outer side of the middle rail, and a second gear disposed on the outer side of the lower rail. The rack consists of two sets, namely a first rack and a second rack, wherein the first rack and the second rack are arranged in parallel, the first rack meshes with the first gear, and the second rack meshes with the second gear.

5. A drawer slide, characterized in that, Includes the slide rail assembly with gear and rack linkage mechanism and rebound damper as described in any one of claims 1-4, wherein, The rebound damper includes a damping frame, a pusher component disposed within the damping frame, a damper, and a rebounder. The pusher component includes a first push block and a second push block. The first push block is rotatably connected to the second push block via a pin. A groove is provided on the first push block. The damping frame is connected to both the first and second push blocks via a first sliding structure. The first sliding structure includes a first sliding member disposed on the first and second push blocks and a first sliding groove disposed on the damping frame, wherein the first sliding groove extends along the length of the damping frame. The damping rod of the damper is connected to the second push block. The rebounder includes an elastic component, one end of which is mounted on the damping frame, and the other end is mounted on the second push block.

6. The drawer slide rail according to claim 5, characterized in that, The rebound damper further includes a rebound stroke adjustment mechanism, which includes a locking structure and a stroke selection mechanism. The locking structure includes multiple sets of first locking grooves disposed on the damping frame and a first locking block disposed on the first pushing block. The multiple sets of first locking grooves are arranged in parallel, and their upper ends are all connected to the first sliding groove. The stroke selection mechanism includes a bridge slider and a stroke selection drive mechanism for driving the bridge slider to move along the length direction of the damping frame. When the first pushing block moves above the bridge slider, the bridge slider is used to support the bottom of the first pushing block. When the first pushing block passes the bridge slider, the first pushing block swings downward and enters the corresponding first locking groove.

7. The drawer slide rail according to claim 6, characterized in that, The first locking groove is arc-shaped, and the arc of the first locking groove is the same as the arc of the first pushing block swinging downward.

8. The drawer slide rail according to claim 7, characterized in that, The bridge slider is mounted on the damping frame via a second sliding structure; the second sliding structure includes a second slide groove disposed on the damping frame, the second slide groove extending through the damping frame along the width direction of the damper; the bridge slider is mounted in the second slide groove, and one end of it passes through the second slide groove and extends to the outside of the damping frame to connect with the stroke selection drive mechanism.

9. The drawer slide rail according to claim 6, characterized in that, The stroke selection drive mechanism includes an unlocking switch plate; the unlocking switch plate is mounted on the side of the damping frame via a third sliding structure, and the unlocking switch plate is provided with a drive groove that cooperates with the bridge slider.

10. The drawer slide rail according to claim 5, characterized in that, A torsion spring is provided on the pin, and the elastic force of the torsion spring causes the first push block to swing downward.

Images