Drawer slide rail
By introducing the design of damping buffers and levers into the drawer slides, the impact problem when closing the drawer is solved, the drawer is closed smoothly and stably, and the user experience is improved.
Patent Information
- Application Number
- CN202422519811.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-17
AI Technical Summary
Common drawer slides on the market are not equipped with damping buffers, which causes impact on the table cabinet when the drawer is closed, and easily causes the drawer to not close tightly or slide open automatically.
A damping buffer and a lever are set in the drawer slide rail. The damping buffer provides a cushioning effect when the drawer is closed, and the lever provides a damping force when the drawer is opened, ensuring the smooth closing of the drawer and preventing it from sliding open automatically.
It effectively prevents the drawer from impacting the table and cabinet when closing, prevents the drawer from closing loosely or sliding open automatically, and improves the stability and comfort of drawer use.
Smart Images
Figure CN223365197U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a structural improvement of a drawer slide rail. Background Art
[0002] Some common drawer slides on the market are not equipped with damping buffers. When applied to drawers, they will not only cause impact on the table and cabinet when closing the drawer, but also easily cause the drawer to close loosely or slide open automatically. Utility Model Content
[0003] The utility model aims to improve the above-mentioned deficiencies of the existing drawer slide rails.
[0004] For this purpose, the utility model adopts the following technical solutions:
[0005] A drawer slide comprises an upper rail, a middle rail and a lower rail. A wheel axle is horizontally provided on the side of the middle rail, and a gear is provided on the wheel axle. An upper rack frame that meshes with the gear from above is slidably connected to the top of the middle rail, and the upper rail is provided on the upper rack frame. A lower rack frame that meshes with the gear from below is slidably provided on the bottom of the middle rail, and the lower rail is provided on the lower rack frame. The drawer slide also comprises a damping buffer and a shift rod, the shift rod is uprightly provided on the top of the lower rail, and the damping buffer is provided on the bottom of the upper rail. The damping buffer comprises a spring frame, a rail frame, a connecting rod, a spring, a swing block and a cover plate, wherein:
[0006] The spring frame is fixedly installed at the front end of the upper rail;
[0007] The rail frame is mounted on the bottom of the upper rail behind the spring frame. The front portion of the rail frame is provided with a rail section. The cross section of the rail section is L-shaped and includes a top plate horizontally fixed to the bottom of the upper rail and a side plate vertically provided on one side of the bottom surface of the top plate. A linear groove is provided on the bottom surface of the top plate in a front-to-rear direction. The bottom edge of the side plate is bent inward and then upward in an L-shape to form a front-to-rear linear groove together with the linear groove. The bottom surface of the top plate is also provided with an L-shaped groove. The L-shaped groove includes a main section parallel to the linear groove and a secondary section bent toward the rear of the linear groove.
[0008] The connecting rod is movably arranged on the top plate and is slidably connected to the main section of the linear groove and the L-shaped groove. The rear end of the connecting rod is vertically provided with a connecting shaft.
[0009] The spring is arranged on the spring frame in a front-to-back direction, with the front end connected to the spring frame and the rear end connected to the connecting rod;
[0010] The swing block is movably arranged on the rail frame behind the connecting rod, and the side portion of the swing block close to the side plate is provided with a sliding surface running forward and backward, a first inclined surface inclined inward and rearward, and a second inclined surface inclined inward and rearward from front to back, and the rear end of the second inclined surface protrudes beyond the front end of the first inclined surface; the side portion of the swing block away from the side plate is provided with an outwardly convex damping and buffering surface, the top of the damping and buffering surface is opposite to the rear end of the second inclined surface, and the distance between the two is greater than the width of the linear groove, so that the damping and buffering surface can always protrude beyond the linear groove and partially block the sliding track of the shift rod; the rear portion of the swing block is also provided with a limiting column slidably connected to the L-shaped groove; the swing block is slidably connected to the linear groove through its sliding surface, and is movably sleeved to the connecting shaft through the shaft hole provided on the front side portion of the side plate;
[0011] The cover plate is fixedly mounted on the bottom of the upper rail to support the connecting rod and the pendulum block. The side of the cover plate is provided with a long hole in the front-to-back direction for fully exposing the damping buffer surface and the locking groove.
[0012] As a preferred solution, the spring frame, rail frame, connecting rod and pendulum block are all plastic parts.
[0013] As a preferred solution, the shift lever and the cover plate are both metal parts.
[0014] As a preferred solution, the spring is arranged in a spring groove provided at the bottom of the spring frame.
[0015] As a preferred solution, the connecting rod is slidably connected to the linear groove through a sliding foot provided on the rear side thereof.
[0016] As a preferred solution, the connecting rod is slidably connected to the main section of the L-shaped groove through a rib provided on the top of the connecting rod.
[0017] As a preferred solution, the shifting rod is arranged in the middle of the length direction of the lower rail.
[0018] As a preferred solution, the front end of the cover plate is inserted and fixed in a slot provided at the rear end of the spring frame.
[0019] As a preferred solution, a connecting portion is provided at the rear end of the slide, the connecting portion is fixedly connected to the bottom of the upper rail, and the rear portion of the cover plate is sleeved and fixed to the connecting portion.
[0020] As a preferred solution, the middle rails on both sides of the upper rack rack are provided with first limit blocks for limiting the sliding range of the upper rack rack, and the middle rails on both sides of the lower rack rack are provided with second limit blocks for limiting the sliding range of the lower rack rack.
[0021] The utility model provides a damping buffer on the upper rail and a corresponding shifting rod on the lower rail. The two cooperate with each other to provide buffering when the upper rail and the middle rail are folded and damping when they are unfolded, which not only prevents the closing of the drawer from causing an impact on the table cabinet, but also prevents the drawer from being loosely closed. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model
[0023] Figure 2 This is an exploded view of the overall structure of the embodiment of the utility model
[0024] Figure 3 This is one of the schematic diagrams of the damping buffer installation structure of the embodiment of the utility model
[0025] Figure 4 This is the second schematic diagram of the damping buffer installation structure of the embodiment of the utility model
[0026] Figure 5 This is a schematic diagram of the damping buffer structure of the embodiment of the utility model
[0027] Figure 6 Exploded view of the damping buffer according to the embodiment of the utility model
[0028] Figure 7 This is a schematic diagram of the pendulum structure of an embodiment of the utility model
[0029] Figure 8 Schematic diagram of the rail structure of the embodiment of the utility model
[0030] Figure 9 Schematic diagram of the connecting rod structure of the embodiment of the utility model DETAILED DESCRIPTION
[0031] The present invention will be described below with reference to the accompanying drawings and specific embodiments.
[0032] It should be pointed out that the directional terms such as front and rear in the present invention are set according to the sliding direction of the upper rail, the unfolding direction is the front, and the folding direction is the rear.
[0033] like Figure 1-9 The drawer slide shown includes an upper rail 1, a middle rail 2 and a lower rail 3. A wheel axle 4 is horizontally provided on the side of the middle rail 2, and a gear 5 is provided on the wheel axle 4. The top of the middle rail 2 is slidably connected to an upper rack rack 6 that engages with the gear 5 from above. The upper rail 1 is provided on the upper rack rack 6, and the bottom of the middle rail 2 is slidably provided with a lower rack rack 7 that engages with the gear 5 from below. The lower rail 3 is provided on the lower rack rack 7, and a mounting bracket 15 is provided on the lower rail 3; the middle rails 2 on both sides of the upper rack rack 6 are provided with first limit blocks 2.1 for limiting the sliding range of the upper rack rack 6, and the middle rails 2 on both sides of the lower rack rack 7 are provided with second limit blocks 2.2 for limiting the sliding range of the lower rack rack 7.
[0034] The lower rail 3 further comprises a damping buffer and a shifting rod 8 , wherein the shifting rod 8 is uprightly arranged on the top of the lower rail 3 and is arranged in the middle of the length direction of the lower rail 3 .
[0035] The damping buffer is arranged at the bottom of the upper rail 1, and the damping buffer includes a spring frame 9, a rail frame 10, a connecting rod 11, a spring 12, a pendulum block 13 and a cover plate 14, wherein:
[0036] The spring frame 9, the rail frame 10, the connecting rod 11 and the pendulum block 13 are all plastic parts, and the shifting rod 8 and the cover plate 14 are all metal parts.
[0037] The spring frame 9 is inserted and fixed in the front opening of the upper rail 1, so as to be fixed to the front end of the upper rail 1 while closing the front opening of the upper rail 9.
[0038] The rail frame 10 is located at the bottom of the upper rail 1 behind the spring frame 9. The front portion of the rail frame 10 is provided with a rail section 10.1. The rail section 10.1 has an L-shaped cross-section and includes a top plate 10.11 fixed horizontally to the bottom of the upper rail 1 and a side plate 10.12 perpendicularly attached to one side of the bottom surface of the top plate 10.11. The bottom surface of the top plate 10.11 is provided with a linear groove running forward and backward. The bottom edge of the side plate 10.12 is bent inward and then upward in an L-shape to form a linear groove 10.13 running forward and backward together with the linear groove. The bottom surface of the top plate 10.11 is also provided with an L-shaped groove 10.111. The L-shaped groove 10.111 includes a main section parallel to the linear groove 10.13 and a secondary section bent toward the rear of the linear groove 10.13. The rear end of the rail frame 10 is provided with a connecting portion 10.2, which is inserted and fixed into a buckle provided at the bottom of the upper rail 1.
[0039] A connecting rod 11 is movably mounted on the top plate 10.11. A connecting shaft 11.1 is vertically mounted at the rear end of the connecting rod 11. The connecting rod 11 is slidably connected to the linear groove 10.13 via a sliding foot 11.2 provided on the rear side thereof, and is slidably connected to the main section of the L-shaped groove 10.111 via a rib 11.3 provided on the top thereof.
[0040] The spring 12 is arranged in a spring groove provided at the bottom of the spring frame 9 in a forward and backward direction, and is connected to the spring frame 9 at the front end and the connecting rod 11 at the rear end, so as to pull the connecting rod 11 and the slider 13 backward.
[0041] The swing block 13 is movably arranged on the rail frame 10 behind the connecting rod 11. The side of the swing block 13 close to the side plate 10.12 is provided with a sliding surface 13.1 running forward and backward, a first inclined surface 13.2 tilted inward and rearward, and a second inclined surface 13.3 tilted inward and rearward in sequence from back to front. The front end of the second inclined surface 13.3 protrudes beyond the rear end of the first inclined surface 13.2; the side of the swing block 13 away from the side plate 11.12 is provided with a convex damping buffer surface 13.4. The top of the damping buffer surface 13.4 is opposite to the front end of the second inclined surface 13.3, and the distance between the two is 1 / 4. The distance between the pendulum block 13 and the connecting rod 10 is greater than the width of the linear groove 10.13, so that the damping buffer surface 13.4 can always protrude outside the linear groove 10.13 and partially block the sliding track of the shift lever 8; the rear part of the pendulum block 13 is also provided with a limit column 13.7 slidingly connected to the L-shaped groove 10.111; the pendulum block 13 is slidably connected to the linear groove 10.13 through its sliding surface 13.1, and is movably connected to the connecting shaft 11.1 through the axial hole 13.6 provided on the front side of the side plate 10.12, so that the pendulum block 13 can move with the connecting rod 11 and swing in and out in the horizontal direction.
[0042] A cover plate 14 is provided at the bottom of the upper rail 1 to support the connecting rod 11 and the pendulum block 13. The front end of the cover plate 14 is inserted and fixed in a slot provided at the rear end of the spring frame 9, and the rear end is sleeved and fixed to the periphery of the connecting portion 10.2. The side of the cover plate 14 is provided with a long hole 14.1 extending forward and backward for exposing the damping buffer surface 13.4 and the locking groove 13.5.
[0043] The default initial state is that both the upper rail 1 and the middle rail 2 are in the folded state. At this time, the lever 8 is located in the locking groove 13.5. When the lower rail 3 is fixed and the upper rail 1 is driven to expand forward, the lever 8 will form an obstruction force on the upper rail 1. This function can be used to prevent the drawer from closing loosely or sliding open automatically. The upper rail 1 is continuously driven forward to expand, and the pendulum block 13 and the connecting rod 11 move forward accordingly until the limit column 13.7 slides into the sub-section of the L-shaped groove 10.13, the lever 8 disengages from the locking groove 13.5 and slides along the damping buffer surface 13.4. After that, the lever 8 is freed from the restraint of the damping buffer, and the upper rail 1 and the middle rail 2 can freely expand forward after obtaining a forward momentum.
[0044] When folding, the lower rail 3 is fixed to drive the upper rail 1 to move backward, and the middle rail 2 moves backward accordingly until the lever 8 and the damping buffer surface 13.4 are reached, and the upper rail 1 is continuously driven to move backward. The lever 8 slides from back to front over the damping buffer surface 13.4 and slides into the locking groove 13.5. The lever 8 drives the limit column 13.7 on the slider 13.5 to unlock from the sub-section of the L-shaped groove 10.111, and then the tension of the spring 12 pulls the connecting rod 11 and the pendulum block 13 backward to reset.
Claims
1. A drawer slide rail, comprising an upper rail (1), a middle rail (2) and a lower rail (3), wherein a wheel shaft (4) is horizontally provided on the side of the middle rail (2), a gear (5) is provided on the wheel shaft (4), an upper rack frame (6) that meshes with the gear (5) from above is slidably connected to the top of the middle rail (2), the upper rail (1) is arranged on the upper rack frame (6), the bottom of the middle rail (2) is slidably provided with a lower rack frame (7) that meshes with the gear (5) from below, and the lower rail (3) is arranged on the lower rack frame (7); further comprising a damping buffer and a shifting rod (8), the shifting rod (8) being uprightly provided on the top of the lower rail (3), and the damping buffer being provided at the bottom of the upper rail (1); characterized in that: The damping buffer comprises a spring frame (9), a rail frame (10), a connecting rod (11), a spring (12), a pendulum block (13) and a cover plate (14), wherein: The spring frame (9) is fixedly mounted on the front end of the upper rail (1); The rail frame (10) is arranged at the bottom of the upper rail (1) behind the spring frame (9), and a rail section (10.1) is provided at the front of the rail frame (10). The cross section of the rail section (10.1) is L-shaped, including a top plate (10.11) fixed horizontally to the bottom of the upper rail (1) and a side plate (10.12) vertically arranged on one side of the bottom surface of the top plate (10.11). A linear groove is provided on the bottom surface of the top plate (10.11) in a front-to-back direction. The bottom edge of the side plate (10.12 is bent inwardly and then upwardly in an L-shape to form a front-to-back linear groove (10.13) together with the linear groove. The bottom surface of the top plate (10.11) is also provided with an L-shaped groove (10.111). The L-shaped groove (10.111) includes a main section parallel to the linear groove (10.13) and a secondary section bent to the rear of the linear groove (10.13). The connecting rod (11) is movably arranged on the top plate (10.11) and is simultaneously slidably connected to the main section of the linear groove (10.13) and the L-shaped groove (10.111). The rear end of the connecting rod (11) is vertically provided with a connecting shaft (11.1); The spring (12) is arranged on the spring frame (9) in a front-to-back direction, and the front end is connected to the spring frame (9) and the rear end is connected to the connecting rod (11); The swing block (13) is movably arranged on the rail frame (10) behind the connecting rod (11). The side of the swing block (13) close to the side plate (10.12) is provided with a sliding surface (13.1) running forward and backward, a first inclined surface (13.2) inclined inward and backward, and a second inclined surface (13.3) inclined inward and backward from the front to the back. The rear end of the second inclined surface (13.3) protrudes beyond the front end of the first inclined surface (13.2); the side of the swing block (13) away from the side plate (11.12) is provided with an outwardly convex damping buffer surface (13.4). The top of the damping buffer surface (13.4) is aligned with the second inclined surface (13.3). The rear portions of the inclined surfaces (13.3) are opposite to each other and the distance between them is greater than the width of the linear groove (10.13), so that the damping buffer surface (13.4) can always protrude outside the linear groove (10.13) and partially block the sliding track of the shifting rod (8); the rear portion of the swing block (13) is also provided with a limiting column (13.7) that is slidably connected to the L-shaped groove (10.111); the swing block (13) is slidably connected to the linear groove (10.13) through its sliding surface (13.1) and is movably connected to the connecting shaft (11.1) through an axis hole (13.6) provided on the front side of the side plate (10.12); The cover plate (14) is fixedly mounted on the bottom of the upper rail (1) to support the connecting rod (11) and the pendulum block (13). The side of the cover plate (14) is provided with a long hole (14.1) extending forward and backward for fully exposing the damping buffer surface (13.4) and the locking groove (13.5).
2. The drawer slide according to claim 1, characterized in that: The spring frame (9), the rail frame (10), the connecting rod (11) and the pendulum block (13) are all plastic parts.
3. The drawer slide according to claim 1, wherein: The shifting rod (8) and the cover plate (14) are both metal parts.
4. The drawer slide according to claim 1, wherein: The spring (12) is arranged in a spring groove arranged at the bottom of the spring frame (9).
5. The drawer slide according to claim 1, wherein: The connecting rod (11) is slidably connected to the linear groove (10.13) through a sliding foot (11.2) provided on the rear side of the connecting rod (11).
6. The drawer slide according to claim 1, wherein: The connecting rod (11) is slidably connected to the main section of the L-shaped groove (10.111) through a convex rib (11.3) provided on the top of the connecting rod (11).
7. The drawer slide according to claim 1, wherein: The shifting rod (8) is arranged at the middle part of the length direction of the lower rail (3).
8. The drawer slide according to claim 1, wherein: The front end of the cover plate (14) is plugged and fixed in a slot provided at the rear end of the spring frame (9).
9. The drawer slide according to claim 8, characterized in that: The rear end of the rail frame (10) is provided with a connecting portion (10.2), which is fixedly connected to the bottom of the upper rail (1), and the rear part of the cover plate (14) is sleeved and fixed to the connecting portion (10.2).
10. The drawer slide according to claim 8, wherein: First limit blocks (2.1) for limiting the sliding range of the upper rack frame (6) are provided on the middle rails (2) on both sides of the upper rack frame (6), and second limit blocks (2.2) for limiting the sliding range of the lower rack frame (7) are provided on the middle rails (2) on both sides of the lower rack frame (7).