Drawer guide rail tail hook with height adjustment function

Abstract

A drawer guide rail tail hook with height adjusting function, which comprises a base fixed at the tail of the guide rail, a guide groove vertically extending in the base, an adjusting seat vertically slidingly installed in the guide groove, and a height adjusting device arranged between the base and the adjusting seat and driving the adjusting seat to vertically slide in the guide groove to adjust the height of the drawer tail. The tail hook has the height adjusting function, and when the height needs to be adjusted during the installation of the drawer or the later maintenance, the user does not need to disassemble the drawer or loosen any structural screw, and only needs to rotate the adjusting wheel arranged on the base by fingers or a simple tool to realize the height adjustment, which is intuitive and convenient to operate, and even a non-professional person can easily complete the accurate adjustment.

Description

Technical Field

[0001] This utility model relates to the field of hardware accessories technology, specifically a drawer slide tail hook with height adjustment function. Background Technology

[0002] As the core component for enabling the opening and closing of drawers in modern furniture, drawer slides are widely used in various furniture products such as cabinets, wardrobes, and desks due to their simple structure, convenient installation, and ability to ensure smooth and stable sliding and precise positioning of drawers.

[0003] To further improve installation efficiency, a mainstream quick-installation solution in existing technology involves installing a hook at the end of the drawer slide and a corresponding snap-fit ​​groove (or locking mechanism) at the end of the drawer body. During installation, the worker simply aligns the drawer's snap-fit ​​groove with the hook on the drawer slide to quickly connect and secure the drawer to the slide. This design simplifies the installation process and, under ideal conditions, ensures the drawer can be pushed and pulled normally.

[0004] However, through long-term design and application practice, the inventors discovered that the existing technology relying on rigid "hook-groove" connection has the following two major defects that urgently need to be improved:

[0005] First, the installation requires extremely high precision and has a very low tolerance for error. The success of this connection method depends entirely on the precise alignment of the hooks on the guide rail and the latches on the drawer in both vertical and horizontal directions. In actual production, even a slight deviation in any of these areas—whether it's a minor tolerance in the machining and positioning of the hooks on the guide rail, an accumulated error in the manufacturing dimensions of the latches on the drawer body, or a failure of the installer to perfectly align the two during on-site operation—can lead to serious consequences. At best, this misalignment will cause the drawer to jam, wobble, or become unbalanced during sliding, affecting the user experience; at worst, the latches will completely fail to align with the hooks, making it impossible to install the drawer at all, resulting in rework and inefficiency.

[0006] Secondly, the drawer's reliability is poor over long-term use, posing safety hazards. During daily full-load pushing and pulling, the drawer's own weight and the impact force from opening and closing continuously act on the engagement points of the hooks and latches. Over time, this continuous stress causes wear, fatigue, and even plastic deformation of the hooks or latches, gradually increasing the gap between them and weakening the connection. The direct consequence is that the drawer becomes loose, sags, and makes abnormal noises when opening and closing. More seriously, in extreme cases, the failure of the connection may cause the drawer to suddenly detach from the slides and fall off during use, affecting not only the drawer's normal opening and closing function and lifespan but also posing a direct threat to user safety. Therefore, further improvements are necessary. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a drawer rail tail hook with height adjustment function that is more compact in structure, convenient and quick to adjust, and can significantly improve the connection reliability and safety of the guide rail for long-term use.

[0008] The purpose of this utility model is achieved through the following method: a drawer guide rail tail hook with height adjustment function, which includes a base fixed to the tail of the guide rail, a guide groove extending vertically inside the base, an adjustment seat being vertically slidably installed in the guide groove, and a height adjustment device being provided between the base and the adjustment seat. The height adjustment device drives the adjustment seat to slide vertically in the guide groove to adjust the height of the drawer tail.

[0009] Furthermore, the base is configured as a vertical groove structure with an opening at the front end.

[0010] Furthermore, the base is fixed to the guide rail by welding.

[0011] Furthermore: the base includes a base plate and side plates vertically disposed on both sides of the base plate, and an end plate is disposed perpendicularly to the front end of the side plate. The base plate, side plates and end plates are integrally bent from metal sheets.

[0012] Furthermore: the adjustable seat includes a height adjustment plate, a lower pressure plate extending forward from the upper end of the height adjustment plate, and a bottom support plate extending forward from the lower end of the height adjustment plate. A limiting area is formed between the bottom support plate and the lower pressure plate, and the limiting area is clamped and fixed at the rear of the drawer.

[0013] Furthermore, guide plates extend outward from both sides of the height adjustment plate, and correspondingly, guide grooves for auxiliary guidance are provided on both sides of the base, with the guide plates extending into the guide grooves for sliding.

[0014] Furthermore: the height adjustment device includes an adjustment wheel rotatably mounted on the top of the base, the end face of which is provided with an adjustment groove extending along a curve; it also includes a guide post disposed on the adjustment seat, the guide post being vertically disposed above the center of rotation of the adjustment wheel and extending into the adjustment groove.

[0015] Furthermore, the adjustment groove extends along an Archimedean spiral.

[0016] Furthermore: the guide post is positioned in a recessed positioning groove on the groove wall near the center of the adjusting wheel.

[0017] Furthermore, the height adjustment device also includes a support plate disposed on the adjustment seat, and the guide column is disposed on the rear end face of the support plate; the support plate also extends vertically and is provided with a clearance groove, and the mounting rivets pass through the clearance groove and the mounting hole disposed on the center of the adjustment wheel and are fixedly connected to the base.

[0018] The beneficial effects of this utility model are: 1. Simple structure, low production cost, and improved market competitiveness.

[0019] The tail hook has a height adjustment function. When the height needs to be adjusted during drawer installation or later maintenance, the user does not need to disassemble the drawer or loosen any structural screws. The user only needs to turn the adjustment wheel set on the base with their fingers or simple tools to adjust the height. The operation is intuitive and convenient. Even non-professionals can easily make precise adjustments by one person.

[0020] 3. The novel structure effectively reduces the stringent requirements for initial installation accuracy. Minor vertical height deviations can be easily compensated for by the subsequent height adjustment device. This ensures that the drawer maintains the correct posture during long-term use, effectively avoiding problems such as jamming, shaking, or imbalance caused by installation errors.

[0021] 4. The adjusting base securely clamps the drawer's rear end through a limiting zone formed by the lower pressure plate and the bottom support plate, resulting in a larger force-bearing area and a more stable connection. This effectively prevents the "height drop" problem caused by vibrations from frequent drawer opening and closing. This design ensures a long-term tight and secure connection, avoids the risk of drawer loosening, and significantly improves the product's safety and durability.

[0022] 5. The base can be integrally bent from a metal sheet, resulting in a strong and robust structure. This ensures the stability of the entire adjustment mechanism. The various components of this invention work together in a rational and compact design, achieving not only powerful adjustment capabilities but also guaranteeing the product's durability. Attached Figure Description

[0023] Figure 1 This is a diagram showing the final assembly and usage effect of this utility model.

[0024] Figure 2 In this utility model Figure 1 Enlarged view of the structure of part A.

[0025] Figure 3 This is a schematic diagram of the adjusting seat in the highest position in this utility model.

[0026] Figure 4 , 5 This is an exploded view of the structure of this utility model.

[0027] Figure 6This is an assembly effect diagram of the support plate and adjusting wheel in this utility model.

[0028] Figure 7 This is a schematic diagram of the adjusting wheel structure in this utility model.

[0029] Explanation of reference numerals in the attached drawings: 1. Guide rail; 2. Base; 21. Base plate; 22. Side plate; 23. End plate; 24. Guide groove; 3. Guide groove; 4. Adjusting seat; 41. Height adjustment plate; 42. Pressure plate; 43. Base support plate; 44. Guide plate; 45. Limiting zone; 46. Guide column; 47. Clearance groove; 48. Rivet; 49. Support plate; 5. Adjusting wheel; 51. Adjusting groove; 52. Positioning groove; 53. Mounting hole. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings. A drawer slide tail hook with height adjustment function includes a base 2 fixed to the tail of the guide rail 1, a guide groove 3 extending vertically inside the base 2, and an adjusting seat 4 vertically slidably installed in the guide groove 3. A height adjustment device is provided between the base 2 and the adjusting seat 4, and the height adjustment device drives the adjusting seat 4 to slide vertically in the guide groove 3 to adjust the height of the drawer tail.

[0031] In this embodiment: a base 2 is installed at the end of a conventional drawer slide. This base 2 has a guide groove 3 that serves as the primary guide. An adjustable seat 4, which can move vertically, is installed within this guide groove 3 and can only slide along the direction of the groove, i.e., vertically. The adjustable seat 4 is ultimately connected to the rear of the drawer. A height adjustment device is installed between the base 2 and the adjustable seat 4. By operating this height adjustment device, a driving force can be applied to precisely drive the adjustable seat 4 to slide up or down within the guide groove 3, thereby raising or lowering the height of the entire rear of the drawer.

[0032] Compared with traditional technologies, this invention fundamentally changes the approach of one-time rigid connection in existing technologies. By introducing an actively driven height adjustment device, it transforms the drawer height from a fixed parameter that requires disassembly and reassembly into a variable parameter that can be adjusted conveniently at any time, laying the foundation for this invention to solve the problems of existing technologies.

[0033] In one embodiment, the base 2 is provided as a vertical groove structure with an opening at the front end.

[0034] In this embodiment, the base is designed as a C-shaped or U-shaped groove structure with an open front end. This structure forms the internal space required to accommodate the adjustment seat 4 and the guide walls on both sides. At the same time, this structure is simple, easy to manufacture, and can achieve the basic functions of the base at a very low cost, making it very suitable for industrial production.

[0035] In one embodiment, the base 2 is welded to the guide rail 1 to form a single unit. The welding process provides extremely high connection strength and permanent fixation, capable of withstanding enormous loads and long-term impacts, ensuring absolute reliability of the connection between the tail hook body and the guide rail, and avoiding loosening problems that may occur with screws or other connection methods.

[0036] In one embodiment, the base 2 includes a base plate 21 and side plates 22 perpendicularly disposed on both sides of the base plate 21. An end plate 23 is perpendicularly disposed at the front end of each side plate 22. The base plate 21, side plates 22, and end plates 23 are integrally bent from a metal sheet. This integrally formed structure includes the base plate 21, side plates 22, and end plates 23. This process requires no welding and is completed in one step. It has advantages such as low manufacturing cost and high production efficiency. Furthermore, due to the integral bending, its structural integrity is good, stress distribution is uniform, and it also possesses high strength and durability.

[0037] In one embodiment: the adjusting seat 4 includes a height adjustment plate 41, a lower pressure plate 42 extending forward from the upper end of the height adjustment plate 41, and a bottom support plate 43 extending forward from the lower end of the height adjustment plate 41. A limiting area 45 is formed between the bottom support plate 43 and the lower pressure plate 42, and the limiting area 45 is clamped and fixed at the tail of the drawer.

[0038] Compared to the simple dot-like "hooks" of existing technology, this "surface" clamping structure increases the contact area with the drawer, making the connection more stable and the force more even, effectively preventing the drawer from shaking and sagging.

[0039] In one embodiment: the height adjustment plate 41 has guide plates 44 extending outward on both sides, and correspondingly, the base 2 has guide grooves 24 for auxiliary guidance on both sides, and the guide plates 44 extend into the guide grooves 24 and slide.

[0040] In this embodiment, guide plates 44 are added to both sides of the height adjustment plate 41 of the adjustment seat 4, and guide grooves 24 are correspondingly opened on both sides of the base 2. The guide plates 44 slide within the guide grooves 24. This auxiliary system works in conjunction with the main steering system to ensure that the adjustment seat 4 is absolutely vertical when moving up and down, without any deflection or wobbling.

[0041] In this embodiment, the dual-guide structure greatly improves the smoothness and stability of the adjustment process, ensures the accuracy of the adjustment, avoids the jamming or gap problems that may occur with the single-guide structure, and significantly improves the motion quality and reliability of the entire device.

[0042] In one embodiment: the height adjustment device includes an adjustment wheel 5 rotatably mounted on the top of the base 2, the end face of the adjustment wheel 5 being provided with an adjustment groove 51 extending along a curve; it also includes a guide post 46 disposed on the adjustment seat 4, the guide post 46 being vertically disposed above the rotation center of the adjustment wheel 5 and extending into the adjustment groove 51.

[0043] In this embodiment, the mechanism includes a rotatable adjusting wheel 5 and a fixed guide post 46. An adjusting groove 51, a curved groove with a continuously changing radius, is machined on the end face of the adjusting wheel 5. The guide post 46 is vertically inserted into this groove. When the user rotates the adjusting wheel 5, the curved path of the adjusting groove 51 forces the guide post 46 to change its radial position, i.e., to be pushed further away or pulled closer. This radial displacement is constrained by the guide groove 3, ultimately transforming into a pure, smooth vertical lifting and lowering motion of the adjusting seat 4.

[0044] The device cleverly transforms the simple, effortless "rotational motion" applied by the user into precise, controllable "linear motion," achieving a fine-tuning effect with minimal effort, making the adjustment process both precise and effortless.

[0045] In one embodiment, the adjustment groove 51 is provided to extend along an Archimedean spiral.

[0046] The mathematical property of the Archimedean spiral is that its polar diameter increases linearly with the polar angle. Applied here, this means that the angle at which the user rotates the adjusting wheel 5 is proportional to the height to which the adjusting seat 4 rises or falls.

[0047] This makes height adjustment linear and predictable. For example, rotating 90 degrees raises the height by 1 millimeter, and rotating another 90 degrees raises it by another 1 millimeter. This linear feedback relationship makes the user's operation more certain and facilitates precise adjustment to the target height.

[0048] In one embodiment, the adjusting groove 51 has a recessed positioning groove 52 on a groove wall near the center of the adjusting wheel 5, and the guide post 46 is engaged in the positioning groove 52.

[0049] In this embodiment, a "positioning lock" function is added to the adjustment system. Recessed positioning grooves 52 are machined into the inner wall of the adjustment slot 51. When the guide post 46 moves to the position of these positioning grooves, it will "lock" into them due to elasticity or gravity. This provides clear tactile feedback with a "click" sound, allowing the user to perceive that a preset level has been reached. More importantly, it reliably locks the current height, effectively counteracting the effects of the drawer's own weight and daily pushing and pulling vibrations, preventing accidental slippage in the height position, and greatly enhancing the long-term stability after adjustment.

[0050] In one embodiment: the height adjustment device further includes a support plate 49 disposed on the adjustment seat 4, and the guide post 46 is disposed on the rear end face of the support plate 49; the support plate 49 is also provided with a vertically extending clearance groove 47, and the mounting rivet 48 passes through the clearance groove 47 and the mounting hole 53 disposed on the center of the adjustment wheel 5 and is fixedly connected to the base 2.

[0051] In this embodiment, a dedicated "support plate 49" is added to the adjusting base 4 to securely mount the guide post 46. Simultaneously, to resolve spatial interference issues, a vertical "clearance groove 47" is cleverly designed on the support plate 49. This clearance groove provides a passage for the central "installation rivet 48" that secures the adjusting wheel 5. Thus, the installation rivet 48 can pass through this clearance groove 47 to mount the adjusting wheel 5 onto the base 2, while the support plate 49, carrying the guide post 46, can still slide freely above and below the rivet without interference.

[0052] In summary, this case presents a novel and powerful drawer slide hook with height adjustment. Its overall working principle is as follows:

[0053] First, the base 2, which integrates this utility model, is fixed to the end of the drawer guide rail 1 by welding or screwing. Then, the rear side panel of the drawer is securely clamped within the limiting area 45 of the adjusting seat 4.

[0054] When the drawer height needs to be adjusted, the user does not need to use any complicated tools; they only need to use their fingers or a simple tool such as a flathead screwdriver to turn the exposed adjusting wheel 5. The rotation of the adjusting wheel 5 will drive the cooperating guide post 46 to produce radial displacement through the Archimedean spiral adjusting groove 51 on its end face.

[0055] Since the guide post 46 is fixed on the adjusting seat 4, and the adjusting seat 4 itself is precisely constrained by the guide groove 3 and the auxiliary guide groove 24 to only be able to perform purely vertical movements, the radial displacement of the guide post 46 is efficiently converted into the smooth and linear vertical lifting and lowering of the entire adjusting seat 4 together with the drawer fixed on it.

[0056] When adjusted to the desired height, the guide post 46 can engage with the positioning groove 52 on the inner wall of the adjustment groove 51, achieving reliable self-locking and preventing the height from changing due to vibration or gravity. The entire device achieves a compact structure, simple assembly, and robust durability through ingenious design such as an integrally bent base and a support plate with clearance grooves.

[0057] In summary, this utility model perfectly replaces the rigid connection of the prior art by using a sophisticated "rotation-linear" motion conversion and locking mechanism. It transforms a cumbersome, inefficient, and unreliable installation and adjustment process into a simple, fast, precise, and extremely reliable user experience, and therefore can be widely promoted and used.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A drawer slide tail hook with height adjustment function, characterized in that: It includes a base (2) fixed to the tail of the guide rail (1), a guide groove (3) extending vertically inside the base (2), and an adjusting seat (4) vertically sliding inside the guide groove (3). A height adjusting device is provided between the base (2) and the adjusting seat (4). The height adjusting device drives the adjusting seat (4) to slide vertically inside the guide groove (3) to adjust the height of the drawer tail.

2. The drawer slide tail hook with height adjustment function according to claim 1, characterized in that: The base (2) is provided with a vertical groove structure with an opening at the front end.

3. The drawer slide tail hook with height adjustment function according to claim 1, characterized in that: The base (2) is welded and fixed to the guide rail (1) as a whole.

4. The drawer slide tail hook with height adjustment function according to claim 1, characterized in that: The base (2) includes a base plate (21) and side plates (22) vertically arranged on both sides of the base plate (21). The front end of the side plate (22) is provided with an end plate (23) perpendicular to it. The base plate (21), side plates (22) and end plates (23) are integrally bent from metal plates.

5. The drawer slide tail hook with height adjustment function according to claim 1, characterized in that: The adjustable seat (4) includes a height adjustment plate (41), a lower pressure plate (42) extending forward from the upper end of the height adjustment plate (41), and a bottom support plate (43) extending forward from the lower end of the height adjustment plate (41). A limiting area (45) is formed between the bottom support plate (43) and the lower pressure plate (42), and the limiting area (45) is clamped and fixed at the tail of the drawer.

6. A drawer slide tail hook with height adjustment function according to claim 5, characterized in that: The height adjustment plate (41) has guide plates (44) extending outward on both sides. Correspondingly, the base (2) has guide grooves (24) on both sides for auxiliary guidance. The guide plates (44) extend into the guide grooves (24) and slide.

7. The drawer slide tail hook with height adjustment function according to claim 1, characterized in that: The height adjustment device includes an adjustment wheel (5) rotatably mounted on the top of the base (2), and the end face of the adjustment wheel (5) is provided with an adjustment groove (51) extending along the curve; it also includes a guide post (46) provided on the adjustment seat (4), the guide post (46) being vertically positioned above the rotation center of the adjustment wheel (5) and extending into the adjustment groove (51).

8. A drawer slide tail hook with height adjustment function according to claim 7, characterized in that: The adjustment groove (51) is provided along the Archimedean spiral.

9. A drawer slide tail hook with height adjustment function according to any one of claims 7 or 8, characterized in that: The adjustment groove (51) has a recessed positioning groove (52) on the groove wall near the center of the adjustment wheel (5), and the guide post (46) is locked in the positioning groove (52).

10. A drawer slide tail hook with height adjustment function according to claim 9, characterized in that: The height adjustment device also includes a support plate (49) set on the adjustment seat (4), and the guide column (46) is set on the rear end face of the support plate (49); the support plate (49) also extends vertically and is provided with a clearance groove (47), and the mounting rivet (48) passes through the clearance groove (47) and the mounting hole (53) set on the center of the adjustment wheel (5) and is fixedly connected to the base (2).

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