A drawer slide closing damping device

Abstract

A drawer slide rail closing damping device includes a base connected to a fixed rail on the slide rail, a reset guide rail and a self-locking guide rail connected to the base, a guide slider slidably mounted on the reset guide rail, and a reset spring between the guide slider and the base. The reset spring pulls the guide slider to slide in the closing direction of the guide rail. A buffer is also provided between the guide slider and the base to slow down the speed of the guide slider moving in the closing direction. The beneficial effect of this utility model is that the reset spring and the buffer between the guide slider and the base work together. The reset spring always pulls the guide slider to slide in the closing direction, ensuring that the drawer can smoothly complete the self-closing process.

Description

Technical Field

[0001] This utility model relates to the field of hardware accessories technology, specifically a drawer slide closing damping device. Background Technology

[0002] Drawers, widely used components in furniture and storage units, are favored for their convenience. However, in daily use, the slamming sound and vibration produced when drawers close are a common problem, not only affecting the user experience and potentially causing noise pollution, but also accelerating the wear and tear on drawers, slides, and even the items inside over time.

[0003] In the existing technology, some attempts have been made to solve the above problems. The simplest drawer slides do not have any damping or self-closing function. When the drawer closes, it will directly hit the cabinet, producing a harsh noise and potentially damaging the drawer or the items inside.

[0004] To address this issue, drawer slides with soft-close mechanisms have emerged on the market. These soft-close mechanisms typically employ pneumatic dampers, hydraulic dampers, or a combination of springs and damping elements to provide cushioning during the final stage of the drawer's closing motion, reducing impact. Furthermore, some slides also feature a self-closing function, using springs or other elastic elements to automatically pull the drawer back as it is about to close, ensuring a fully closed drawer.

[0005] However, these existing technologies still have some shortcomings: 1. Some existing soft-closing damping mechanisms, especially those using simple pneumatic dampers, may not have a linear or strong enough damping effect. For heavier drawers or those that close quickly, there may still be insufficient buffering, resulting in a slight impact sound or vibration at the moment of closing, failing to achieve completely silent closing. Some dampers themselves have complex structures, large sizes, and low integration, limiting their application on different types of drawer slides.

[0006] 2. Some drawer slides that only have a self-closing function can ensure that the drawer is eventually pulled back to the closed state. However, if there is a lack of effective damping, the spring tension may cause the drawer to accelerate in the last part of the closing stroke, and eventually hit the cabinet at a relatively high speed, generating noise and impact, and failing to achieve a truly soft and silent closing.

[0007] 3. Existing drawer slides that integrate self-closing and damping functions have complex overall mechanisms, numerous parts, and are difficult to assemble, thus increasing production and maintenance costs. Furthermore, these highly customized integrated solutions may lack versatility, making it difficult to adapt to various models and specifications of drawer slides, or requiring significant modifications to existing slides for installation. This causes considerable inconvenience for users when upgrading or replacing drawer slides, thus necessitating further improvements. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a drawer slide closing damping device that is more compact in structure, more reliable in function, integrates efficient damping and smooth self-locking functions, and can effectively solve the problems of noise and impact when the drawer is closed.

[0009] The purpose of this utility model is achieved in the following way: a drawer slide rail closing damping device, which includes a base connected to a fixed rail on the slide rail, a reset guide rail and a self-locking guide rail connected thereto on the base, a guide slider slidably installed on the reset slide rail, and a reset tension spring between the guide slider and the base, the reset tension spring pulling the guide slider to slide in the closing direction of the guide rail.

[0010] A buffer is also provided between the guide slider and the base to slow down the speed at which the guide slider moves in the closing direction.

[0011] The guide slider is also hinged with a self-locking slider, which is guided to slide along the path of the reset guide rail and the self-locking guide rail. The self-locking slider is provided with a hook groove, which can be hooked or separated from the hook pin provided on the movable rail of the slide rail.

[0012] Furthermore: the reset guide rail extends horizontally, the self-locking guide rail is perpendicular to the reset guide rail, and the reset guide rail and the self-locking guide rail are connected by an arc transition rail.

[0013] Furthermore, the base has a recessed receiving area, and the self-locking guide rail is located on the side wall of the receiving area.

[0014] Furthermore, the base is also provided with a guide groove, and a driving block is provided at the bottom of the guide slider, which extends downward and slides into the guide groove.

[0015] Furthermore, the base is also provided with a tension spring groove, which is connected to the guide groove. The drive block extends into the tension spring groove, and one end of the reset tension spring is hooked in the fixed groove at the end of the tension spring groove, while the other end is fixed in the movable groove on the drive block.

[0016] Furthermore: the guide slider is provided with a hinge shaft, and correspondingly, the self-locking slider is provided with a hinge hole, and the self-locking slider is fitted onto the hinge shaft and connected to it through the hinge hole.

[0017] Furthermore, the base is provided with a buffer groove, the buffer is installed in the buffer groove, and the groove wall of the buffer groove is provided with an anti-disengagement buckle, which clamps the buffer.

[0018] Furthermore, the buffer is a compression-damped hydraulic damping cylinder.

[0019] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness. 2. In this application, a reset spring and a buffer are used in conjunction between the guide slider and the base. The reset spring always pulls the guide slider to slide in the closing direction, ensuring that the drawer can smoothly complete the self-closing process. The buffer precisely slows down the movement speed of the guide slider in the closing direction. In particular, combined with a compression-damped hydraulic damping cylinder, it can provide stable and linear damping force, effectively absorbing the impact energy during closing, fundamentally eliminating the impact noise and vibration when the drawer closes, realizing the soft and silent closing of the drawer, and greatly improving the user experience.

[0020] 3. This utility model ingeniously introduces a self-locking slider hinged to the guide slider. The self-locking slider is guided to slide along the path of the reset guide rail and the self-locking guide rail. Its hook groove engages with the hook pin on the movable rail, achieving reliable self-locking after the drawer is closed, effectively preventing the drawer from accidentally sliding out. Simultaneously, because the self-locking slider and the guide slider are hinged, when the drawer needs to be opened, the hook pin separates from the hook groove under certain conditions, allowing the self-locking slider to smoothly release its locked state. This design ensures the robustness of the self-locking mechanism while also considering the convenience and smoothness of unlocking, avoiding the jamming or difficulty in unlocking problems that may occur in existing technologies.

[0021] 4. The unique layout of the reset guide rail and self-locking guide rail enables precise control of complex motion trajectories within a limited space. This design allows the entire damping and self-locking mechanism to be efficiently integrated into the slide rail system, resulting in coordinated mechanism movements, high space utilization, reduced mechanical wear, and extended product lifespan. Attached Figure Description

[0022] Figure 1 , 2 This is a diagram showing the effect of assembling and using this utility model and guide rail.

[0023] Figure 3 , 4 This is a schematic diagram of the structure of this utility model.

[0024] Figure 5 This is a diagram showing the effect of the self-locking slider being inserted into the self-locking guide rail in this utility model.

[0025] Figure 6 This is a structural assembly drawing of the present utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Base; 11. Receiving area; 12. Guide groove; 13. Tension spring groove; 14. Fixing groove; 15. Buffer groove; 16. Anti-disengagement; 17. Fixed rail; 18. Movable rail; 2. Reset guide rail; 3. Self-locking guide rail; 4. Guide slider; 41. Drive block; 42. Movable groove; 43. Hinge shaft; 5. Reset tension spring; 6. Buffer; 7. Self-locking slider; 71. Hook groove; 72. Hinge hole; 8. Hanging pin; 9. Arc transition rail. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings. A drawer slide rail closing damping device includes a base 1 connected to a fixed rail 17 on the slide rail, a reset guide rail 2 and a self-locking guide rail 3 connected thereto on the base 1, a guide slider 4 slidably mounted on the reset guide rail 2, and a reset tension spring 5 provided between the guide slider 4 and the base 1. The reset tension spring 5 pulls the guide slider 4 to slide in the direction of closing the guide rail.

[0028] A buffer 6 is also provided between the guide slider 4 and the base 1. The buffer 6 slows down the speed at which the guide slider 4 moves in the closing direction.

[0029] The guide slider 4 is also hinged to a self-locking slider 7. The self-locking slider 7 is guided to slide along the path of the reset guide rail 2 and the self-locking guide rail 3. The self-locking slider 7 is provided with a hook groove 71, which can be hooked or separated from the hook pin 8 provided on the movable rail 18 on the slide rail.

[0030] In this embodiment: the base 1 serves as the foundation of the entire device and is fixed to the fixed rail of the drawer slide. The reset guide rail 2 and the self-locking guide rail 3 are mounted on the base 1, providing a trajectory for the subsequent movement of the slider. The guide slider 4 can slide linearly along the reset guide rail 2. A reset spring 5 is connected at one end to the guide slider 4 and at the other end to the base 1; its elastic force continuously pulls the guide slider 4 towards the drawer closing direction, providing a continuous driving force for the drawer's self-closing. When the guide slider 4 moves towards the closing direction under the pull of the reset spring 5, the buffer 6 located between the guide slider 4 and the base 1 is compressed, generating resistance and slowing down the movement speed of the guide slider 4, thus achieving a damping effect on the drawer closing process. The self-locking slider 7 is hinged to the guide slider 4; it does not slide completely independently but is guided to slide along the path jointly defined by the reset guide rail 2 and the self-locking guide rail 3 on the base 1. When the drawer is closed, the latch groove 71 on the self-locking slider 7 engages with the hook pin 8 on the drawer slide rail, thus achieving self-locking of the drawer; when the drawer needs to be opened, the latch groove 71 separates from the hook pin 8, releasing the self-locking.

[0031] In this embodiment: the reset spring 5 provides self-closing power, while the buffer 6 ensures smooth deceleration during the closing process, effectively eliminating impact noise and shock when the drawer closes, and greatly improving the user experience.

[0032] The hinge relationship between the locking slider and the guide slider 4, and the description of its "guided sliding" along the two guide rail paths, ingeniously solve the problem of positioning and operation of the self-locking element in complex motion trajectories, laying the foundation for achieving accurate and reliable self-locking and unlocking functions.

[0033] In one embodiment: the reset guide rail 2 extends horizontally, the self-locking guide rail 3 is perpendicular to the reset guide rail 2, and the reset guide rail 2 and the self-locking guide rail 3 are connected by an arc transition rail 9.

[0034] In this embodiment: the reset guide rail 2 extends horizontally and is mainly responsible for guiding the slider 4 to perform linear movement. The self-locking guide rail 3 is set perpendicular to the reset guide rail 2, which creates a movement path different from the main sliding direction, and is often used to achieve vertical locking or unlocking actions. The two are smoothly connected by an arc transition rail 9. This specific geometric relationship allows the self-locking slider 7, which is hinged to the guide slider 4, to smoothly transition from the horizontal reset guide rail 2 to the vertical self-locking guide rail 3 during movement, and vice versa. The arc transition rail 9 ensures the continuity and smoothness of this transition.

[0035] In one embodiment: the base 1 has a recessed receiving area 11, and the self-locking guide rail 3 is located on the side wall of the receiving area 11.

[0036] In this embodiment, a recessed receiving area 11 is provided on the base 1, which provides space for some components inside the device. The self-locking guide rail 3 does not protrude from the surface of the base, but is cleverly located on the side wall of this recessed receiving area 11. This allows the moving part of the self-locking slider 7 to be partially accommodated within the internal structure of the base when it slides along the self-locking guide rail 3.

[0037] The self-locking guide rail 3 is set on the side wall of the recessed receiving area 11, which effectively utilizes the internal space of the base, making the thickness and volume of the entire device more compact, improving space utilization, and making it easy to integrate into drawer slides of various sizes.

[0038] In one embodiment: the base 1 is further provided with a guide groove 12, and the bottom of the guide slider 4 is provided with a driving block 41 extending downward, the driving block 41 extending into the guide groove 12 and sliding.

[0039] In this embodiment, in addition to the guidance provided by the reset guide rail 2, a guide groove 12 is additionally provided on the base 1. A drive block 41 extends downward from the bottom of the guide slider 4, which is precisely inserted into the guide groove 12 and can slide within it. This dual guiding mechanism works together to ensure that the guide slider 4 moves more accurately in the horizontal direction, and is less prone to shaking or deviation.

[0040] In one embodiment: the base 1 is also provided with a tension spring groove 13, which passes through the guide groove 12. The drive block 41 extends into the tension spring groove 13. One end of the reset tension spring 5 is hooked in the fixed groove 14 at the end of the tension spring groove 13, and the other end is fixed in the movable groove 42 on the drive block 41.

[0041] In this embodiment: a spring groove 13 specifically designed to accommodate the reset spring 5 is provided on the base 1, and this groove communicates with the guide groove 12. The drive block 41 on the guide slider 4 extends into the spring groove 13. One end of the reset spring 5 is fixed in the fixing groove 14 at the end of the spring groove 13 by a hook, ensuring that the spring's reference point is fixed; the other end is fixed in the movable groove 42 on the drive block 41. When the guide slider 4 moves, the drive block 41 slides in the spring groove 13, pulling or releasing the reset spring 5, so that the spring can stably and reliably apply the expected tension to the guide slider 4.

[0042] The precise fit of the tension spring groove 13, the fixed groove 14 and the movable groove 42 ensures that the reset tension spring 5 is always in the correct stress state throughout the entire working stroke, making it less likely to fall off or twist, thus ensuring the continuity and stability of the self-closing function.

[0043] In one embodiment: the guide slider 4 is provided with a hinge shaft 43, and correspondingly, the self-locking slider 7 is provided with a hinge hole 72. The self-locking slider 7 is fitted onto the hinge shaft 43 and connected to it through the hinge hole 72.

[0044] In this embodiment, the self-locking slider 7 is fitted onto the hinge shaft 43 through its hinge hole 72, thereby achieving a rotational connection between the self-locking slider 7 and the guide slider 4. This connection method allows the self-locking slider 7 to swing or rotate relative to the guide slider 4 as it is guided to slide along the path of the reset guide rail 2 and the self-locking guide rail 3, adapting to changes in the guide rail path. This enables the self-locking slider 7 to flexibly adjust its posture while following the guide rail path, thus ensuring precise triggering and release of the self-locking function.

[0045] In one embodiment: the base 1 is further provided with a buffer groove 15, the buffer 6 is installed in the buffer groove 15, and the buffer groove 15 is provided with an anti-disengagement buckle 16 on the groove wall, the anti-disengagement buckle 16 is clamped on the buffer 6.

[0046] In this embodiment, to prevent the buffer 6 from being dislodged from its installation position due to impact or vibration during repeated opening and closing of the drawer, an anti-disengagement buckle 16 is specially provided on the wall of the buffer groove 15. The anti-disengagement buckle 16 firmly fixes the buffer 6 by clamping. The buffer groove 15 provides a precise installation position for the buffer 6, while the anti-disengagement buckle 16 further ensures that the buffer 6 will not loosen or fall off during operation.

[0047] In one embodiment, the buffer 6 is a compression-damped hydraulic cylinder. This type of damping cylinder typically contains hydraulic fluid and a piston structure. When subjected to external force, the piston's movement forces the hydraulic fluid to flow through a small orifice, thereby generating resistance. Because the liquid is incompressible or slightly compressible, this resistance can be designed to be very smooth and linear, providing a stable damping effect. Its operation mainly occurs when the piston is compressed and moves inward, generating damping in the direction of drawer closure.

[0048] In summary, the core working principle of the drawer slide rail closing damping device of this utility model lies in achieving smooth self-closing, efficient damping, and reliable self-locking of the drawer through a cleverly designed mechanical linkage and damping mechanism.

[0049] When the drawer is open: the guide slider 4 is pulled by the reset spring 5, always tending to slide in the closing direction of the guide rail. The self-locking slider 7 is hinged to the guide slider 4 via the hinge shaft 43 and the hinge hole 72, and is guided along the path of the reset guide rail 2 and the self-locking guide rail 3. At this time, the hook slot 71 is separated from the hook pin 8 on the movable rail.

[0050] As the drawer slides towards the closed position: As the drawer gradually approaches the closed position, the pin 8 on the moving rail strikes the self-locking slider, causing the self-locking slider to deviate from the self-locking guide rail and enter the reset guide rail. This allows the latch groove 71 on the self-locking slider to engage with the pin 8. Under the continuous tension of the reset spring 5, the guide slider 4 moves forward along the reset guide rail 2, driving the entire device and guide rail towards the closing direction, providing self-closing power. Simultaneously, the drive block 41 slides within the guide groove 12, ensuring the stable operation of the guide slider 4.

[0051] When the guide slider 4 reaches the preset damping stroke, it begins to press against the buffer 6. The buffer 6 generates reverse resistance, slowing down the movement speed of the guide slider 4 and the self-locking slider, thereby achieving smooth damping during the drawer closing process, avoiding rapid impact of the drawer, eliminating noise, and ensuring a soft and silent closing. The buffer 6 is firmly installed in the buffer groove 15 of the base 1 and clamped by the anti-disengagement buckle 16, ensuring a stable and reliable damping effect.

[0052] During the opening process of the drawer rail, the pin drags the guide slider 4 and the self-locking slider outward along the reset guide rail. When it reaches the end of the reset guide rail, the self-locking slider is deflected by the arc transition rail and hooks onto the self-locking slide rail, keeping the tension spring in a stretched and stored state to provide power for resetting and closing. After the self-locking slider deflects into the self-locking track, the hook groove 71 on the self-locking slider separates from the pin 8, allowing the drawer rail to continue to open fully outward.

[0053] Through the above-mentioned collaborative work, the present invention effectively solves the problems of noise when the drawer closes, poor damping effect, and unreliable self-locking in the prior art, and provides a drawer slide closing damping solution that is compact in structure, complete in function, and stable and reliable in operation, and therefore can be widely used.

[0054] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0055] 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 rail closing damping device, characterized in that: It includes a base (1) connected to a fixed rail on the slide rail, a reset guide rail (2) and a self-locking guide rail (3) connected thereto on the base (1), a guide slider (4) is slidably installed on the reset guide rail (2), a reset tension spring (5) is provided between the guide slider (4) and the base (1), and the reset tension spring (5) pulls the guide slider (4) to slide in the direction of closing the guide rail. A buffer (6) is also provided between the guide slider (4) and the base (1). The buffer (6) slows down the speed at which the guide slider (4) moves in the closing direction. The guide slider (4) is also hinged to a self-locking slider (7). The self-locking slider (7) is guided to slide along the path of the reset guide rail (2) and the self-locking guide rail (3). The self-locking slider (7) is provided with a hook groove (71). The hook groove (71) hooks or separates from the hook pin (8) provided on the movable rail of the slide rail.

2. The drawer slide rail closing damping device according to claim 1, characterized in that: The reset guide rail (2) extends horizontally, and the self-locking guide rail (3) is perpendicular to the reset guide rail (2). The reset guide rail (2) and the self-locking guide rail (3) are connected by an arc transition rail (9).

3. The drawer slide rail closing damping device according to claim 1, characterized in that: The base (1) has a recessed accommodating area (11), and the self-locking guide rail (3) is located on the side wall of the accommodating area (11).

4. The drawer slide rail closing damping device according to claim 1, characterized in that: The base (1) is also provided with a guide groove (12), and a driving block (41) is provided at the bottom of the guide slider (4) extending downward. The driving block (41) extends into the guide groove (12) and slides.

5. A drawer slide rail closing damping device according to claim 4, characterized in that: The base (1) is also provided with a tension spring groove (13), which is connected to the guide groove (12). The drive block (41) extends into the tension spring groove (13). One end of the reset tension spring (5) is hooked in the fixed groove (14) at the end of the tension spring groove (13), and the other end is fixed in the movable groove (42) on the drive block (41).

6. The drawer slide rail closing damping device according to claim 1, characterized in that: The guide slider (4) is provided with a hinge shaft (43), and correspondingly, the self-locking slider (7) is provided with a hinge hole (72). The self-locking slider (7) is fitted onto the hinge shaft (43) through the hinge hole (72) and connected to it.

7. The drawer slide rail closing damping device according to claim 1, characterized in that: The base (1) is also provided with a buffer groove (15), and the buffer (6) is installed in the buffer groove (15). The buffer groove (15) is provided with an anti-disengagement buckle (16) on the groove wall, and the anti-disengagement buckle (16) is clamped on the buffer (6).

8. A drawer slide rail closing damping device according to claim 1 or 7, characterized in that: The buffer (6) is a compression damping type hydraulic damping cylinder.

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