Drawing basket guide rail and linkage drawing basket

Abstract

The invention relates to the technical field of cabinets, in particular to a pull basket guide rail and a linkage pull basket, and the pull basket guide rail comprises a fixed rail, a movable rail and a buffer. A containing space is formed in the fixed rail, and the buffer is located in the middle of the rear side of the containing space and composed of a shell, a transmission sliding block and an elastic energy storage piece. The shell is provided with a sliding groove with a side opening, the transmission sliding block is arranged in the sliding groove, and one end of the transmission sliding block is provided with an acting part with a guide inclined face and corresponds to the push rod in position. When the movable rail is closed to the tail section, the push rod makes contact with the guide slope to drive the transmission sliding block to compress the elastic energy storage piece, and damping force is generated to achieve buffering. In addition, the pull basket guide rail is applied to the linkage pull basket. According to the pull basket guide rail, linear closing force is converted into stable compression on the elastic energy storage part through the pure mechanical buffer module and the slope structure, uniform deceleration motion is achieved, and abnormal sound and pause are avoided. Only three core components are arranged, the structure is simple, durability is high, and machining and assembling are easy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cabinet accessories, in particular to a pull-out basket guide rail and a pull-out basket connected therewith. BACKGROUND

[0002] In the field of cabinets, especially high cabinets or corner cabinets, a device known as door panel linkage pull-out basket (or "big monster") is widely used to improve the convenience of space access. The core feature of this device is that the front pull-out basket does not slide independently, but is directly installed on the inner side of the cabinet door or moves synchronously with the cabinet door. When the user opens the cabinet door, the door body drives the front pull-out basket to rotate or move horizontally, and at the same time, through a set of connecting mechanism, the rear pull-out basket located in the deep part of the cabinet is driven to move forward, thereby realizing the function of taking and placing all items without reaching into the cabinet.

[0003] Although this door panel linkage pull-out basket greatly optimizes the user experience, the rear pull-out basket part will generate a huge impact force and noise when it quickly resets with the door closing. To alleviate this problem, the existing technology generally tries to add a buffer device on the two-section guide rail. The most common solution is to use a gas cylinder damper. This solution usually installs a gas cylinder damper at the end of the fixed rail, and sets a push pin on the movable rail. When the movable rail closes to the end, the push pin hits and pushes the flip block on the damper, triggering the internal piston movement, and the resistance generated by the damping oil or gas realizes the buffer.

[0004] However, this gas cylinder damping buffer solution has defects: first, its buffer trigger relies on the rigid impact between the push pin and the flip block, which inevitably produces a crisp "click" noise, affecting the silent experience pursued by high-end cabinets; second, the gas cylinder damper itself has a complex structure, consisting of cylinder, piston rod, sealing element and damping medium, etc. multiple precision parts, not only the manufacturing cost is high, but also there is a long-term reliability risk of function failure due to leakage of damping medium; finally, the damper and its triggering mechanism need to occupy a specific installation space on the guide rail, which has poor installation adaptability and universality for the compact structure and strict space layout requirements of the linkage pull-out basket.

[0005] Therefore, there is an urgent need in the art for a buffer solution that can fundamentally simplify the structure, eliminate impact noise, reduce cost and improve reliability to adapt to the special working environment and high quality requirements of the door panel linkage pull-out basket guide rail. SUMMARY

[0006] The first invention purpose of the present application is to solve the problems of complex damping structure, loud noise and high cost of the existing pull-out basket guide rail, and to provide a buffer for the linkage pull-out basket guide rail with simple structure, low noise and low cost.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A pull-out basket guide rail includes a fixed rail, a movable rail, and a buffer. The fixed rail has a receiving space with an opening at the front end, and the movable rail is slidably installed in this receiving space. The movable rail has a downwardly protruding push rod at its rear. The buffer is located in the middle of the rear side of the receiving space and includes a housing, a transmission slider, and an elastic energy storage component. The housing has a groove with an opening at the side. The transmission slider is slidably received in the groove, and one end of it has an action part protruding outward from the groove. This action part includes a guide slope, and the position of the push rod corresponds to the position of the guide slope. The elastic energy storage component is located in the groove. When the movable rail is closed to its final position, the push rod contacts the guide slope and drives the transmission slider to compress the elastic energy storage component, thereby achieving buffering through the damping force generated therein. When the movable rail is opened, the elastic energy storage component drives the transmission slider to reset.

[0008] This invention provides a buffering solution distinct from traditional cylinder damping principles by constructing a purely mechanical buffer module consisting of a housing, a transmission slider, and an elastic energy storage component working in synergy. The core of this solution lies in utilizing the guide ramp on the transmission slider to contact the moving parts, effectively converting the linear closing force into the internal force driving the transmission slider to slide. This force conversion process avoids rigid impacts and effectively eliminates (or "suppresses") abnormal movement noise from a structural perspective. During this process, the linear closing force is efficiently and continuously converted into smooth compression of the elastic energy storage component through the ramp structure. The resulting buffering force increases approximately linearly with the compression stroke, thus helping to achieve uniform deceleration control at the end of the moving track's closing phase, resulting in smoother, more seamless movement. Compared to existing technologies, the buffer of this invention mainly consists of three core components. Its fully mechanical configuration essentially avoids the risk of oil leakage and eliminates the need for precision fitting parts, thus exhibiting high environmental tolerance and service life. Simultaneously, the structure is extremely simplified; all components are suitable for injection molding and can be quickly assembled via snap-fit ​​methods, significantly reducing material, processing, and assembly costs while ensuring functional reliability.

[0009] Furthermore, a limiting structure is provided between the transmission slider and the housing, the limiting structure being configured to limit the sliding stroke of the transmission slider and help prevent it from dislodging from the groove.

[0010] Furthermore, the limiting structure includes a guide groove on the housing and a limiting protrusion on the transmission slider, the limiting protrusion slidingly engaging with the guide groove; the buffer also includes a limiting clamp fixed to the open end of the housing, used to abut against the limiting protrusion when the transmission slider returns to its maximum stroke. This solution integrates the housing, transmission slider, and elastic energy storage component into an independent buffer module through the engagement of the guide groove and the limiting protrusion, and the fastening of the limiting clamp; wherein, the abutment between the limiting clamp and the limiting protrusion limits the maximum return stroke of the transmission slider, effectively preventing it from dislodging from the groove due to spring action. This modular design allows the buffer to be installed or removed from the designated position on the fixed rail as a single component after the guide rail assembly is completed, greatly simplifying the installation and maintenance process in narrow cabinets, while also reducing the risk of buffer components scattering or being damaged during transportation, facilitating efficient operation with immediate installation and use, and immediate replacement.

[0011] Furthermore, the bottom of the chute is provided with a first positioning part, and the end of the transmission slider facing the elastic energy storage member is provided with a second positioning part. The first positioning part is a protrusion, and the second positioning part is a groove. The elastic energy storage member is sleeved between the first positioning part and the second positioning part. This solution sets the first positioning part at the bottom of the chute as a protrusion and sets a matching groove at the corresponding end of the transmission slider as the second positioning part, so that both ends of the elastic energy storage member are respectively sleeved or snapped into the protrusion and the groove. This convex-concave mating structure achieves effective limiting and compact layout of the elastic energy storage member in space, which helps to significantly improve its axial stability during compression and rebound, reduce lateral bending or displacement, thereby making the transmission of buffer force more linear and consistent, the overall structure more stable, and the space utilization more efficient.

[0012] Furthermore, the housing is a flat, hollow rectangle, and the main body of the transmission slider has a rectangular cross-section, with its side surface slidingly engaging with the corresponding inner wall of the slide groove. In this design, the housing is square and flat, ensuring stable positioning and preventing deflection during installation on the guide rail. It also facilitates tight stacking during storage and transportation, effectively saving space. The sliding engagement between the rectangular main body and the slide groove sidewall creates a stable surface contact guide, effectively resisting the rotational torque generated when the push rod acts on the inclined surface. This helps prevent the transmission slider from jamming or tilting during movement, ensuring a smooth and stable buffering process.

[0013] Furthermore, the guide slope area of ​​the actuating part is a hollow structure with an open front end. This design, which makes the guide slope area a hollow structure with an open front end, helps to significantly reduce the contact area with the push rod, thereby effectively reducing sliding friction noise and friction, and improving the quietness effect. On the other hand, it also provides space for the plastic part to deform under stress and gives it a certain chip-absorbing capacity, thereby improving the smoothness and anti-interference ability of the structure.

[0014] Furthermore, the overall outline of the transmission slider is a right-angled trapezoid, and the actuating part has a right-angled triangular structure. Compared with the complex shape design of existing buffers, the transmission slider of this solution adopts a right-angled trapezoidal outline, which forms a stable support between the inclined surface and the mounting part. This not only results in a clear force transmission path and high structural strength, but its regular geometry is also more suitable for injection molding, ensuring smooth demolding and improving production efficiency. Thus, while ensuring the stable and reliable buffering function, it helps to achieve a lower overall cost.

[0015] Furthermore, both the housing and the transmission slider are integrally molded using an injection molding process. This design features simple component structures, requires no secondary processing, and is particularly suitable for large-scale, low-cost production. Simultaneously, the use of engineering plastic materials achieves lightweighting while also ensuring excellent quiet operation and wear resistance when in contact with the push rod.

[0016] Furthermore, the limiting clamp has elastic buckles on opposite sides at its rear, and the housing has buckle holes. The elastic buckles engage with the buckle holes on the housing. The length of the elastic energy storage component in its free state is greater than the distance from the second positioning part of the transmission slider to the edge of the buckle hole near the opening of the slide groove when it is fully compressed in the slide groove. After assembly, the pre-pressure of the elastic energy storage component drives the transmission slider to tend to move towards the opening of the slide groove. Then, through the abutment of the limiting protrusion and the limiting clamp, the elastic buckle is continuously pressed against the edge of the buckle hole near the opening. Utilizing the pre-pressure of the elastic energy storage component, the transmission chain ultimately presses the elastic buckle continuously against the leading edge of the buckle hole, forming a self-locking mechanism. This mechanism effectively eliminates assembly gaps between components, reduces the possibility of abnormal noise caused by vibration, and significantly improves the vibration resistance and loosening ability of the clamp connection, which is beneficial to ensuring the long-term reliability of the product.

[0017] Furthermore, the inner side of the actuating part is provided with reinforcing vertical ribs. Providing reinforcing vertical ribs on the inner side of the actuating part can effectively enhance the rigidity and impact resistance of the inclined area without increasing wall thickness or material usage. This helps prevent deformation or breakage of this critical stress-bearing component under long-term, repeated impacts, thereby extending the service life of the buffer.

[0018] Furthermore, the main body of the transmission slider is a hollow structure with two vertical ribs on its inner side, and the second positioning part is a square groove formed by the vertical ribs.

[0019] Another objective of this invention is to provide a linked pull-out basket, comprising a pull-out basket and a guide rail disposed on the pull-out basket, wherein the guide rail is the pull-out basket guide rail of the above-described solution. Compared with the prior art, the linked pull-out basket of this invention, due to the application of the above-described solution, possesses all the advantages of the aforementioned solution. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the pull-out basket guide rail. Figure 1 ; Figure 2 This is a cross-sectional view of the buffer; Figure 3 This is a schematic diagram of the buffer structure. Figure 1 ; Figure 4 This is a schematic diagram of the buffer structure. Figure 2 ; Figure 5 This is a schematic diagram of the pull-out basket guide rail. Figure 2 ; Figure 6 This is a schematic diagram of the linked pull-out basket structure.

[0021] Label Explanation: Fixed rail 1, accommodating space 10, movable rail 2, push rod 21, buffer 3, housing 4, slide groove 40, first positioning part 41, transmission slider 5, actuating part 51, guide inclined surface 52, second positioning part 53, reinforcing vertical rib 54, mounting part 55, elastic energy storage component 6, limiting structure 7, guide groove 71, limiting protrusion 72, limiting clamp 73, elastic buckle 74, buckle hole 75, linkage pull basket 8, guide rail 9. Detailed Implementation

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings: In the description of this invention, it should be understood that the orientation or positional relationship indicated by terms such as "front", "rear", "inner", and "outer" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0023] This invention discloses a pull-out basket guide rail 9, including a fixed rail 1, a movable rail 2, and a buffer 3. The fixed rail 1 has a receiving space 10 with a front opening, and the movable rail 2 is slidably installed in the receiving space 10. The rear of the movable rail 2 has a downwardly protruding push rod 21. The buffer 3 is located in the middle of the rear side of the receiving space 10 and includes a housing 4, a transmission slider 5, and an elastic energy storage element 6, and has a sliding groove 40 with a side opening. The transmission slider 5 is slidably received in the sliding groove 40, one of which... The end is provided with an action part 51 protruding outward from the groove. The action part 51 includes a guide slope 52, and the position of the push rod 21 corresponds to the position of the guide slope 52. The elastic energy storage member 6 is disposed in the slide groove 40. When the movable rail 2 is closed to the end, the push rod 21 contacts the guide slope 52 and drives the transmission slider 5 to compress the elastic energy storage member 6, thereby achieving buffering through the damping force generated therein. When the movable rail 2 is opened, the elastic energy storage member 6 drives the transmission slider 5 to reset.

[0024] A limiting structure 7 is provided between the aforementioned transmission slider 5 and the housing 4. The limiting structure 7 is configured to limit the sliding stroke of the transmission slider 5 and help prevent it from dislodging from the slide groove 40.

[0025] The aforementioned limiting structure 7 includes a guide groove 71 disposed on the housing 4 and a limiting protrusion 72 disposed on the transmission slider 5. The limiting protrusion 72 is slidably engaged with the guide groove 71. The buffer 3 also includes a limiting clamp 73, which is fixed to the open end of the housing 4 and is used to abut against the limiting protrusion 72 when the transmission slider 5 returns to its maximum stroke. This solution integrates the housing 4, the transmission slider 5, and the elastic energy storage component 6 into an independent buffer functional module through the engagement of the guide groove 71 and the limiting protrusion 72 and the fastening and fixing of the limiting clamp 73. The limiting clamp 73 abuts against the limiting protrusion 72, limiting the maximum return stroke of the transmission slider 5, which helps to effectively prevent it from dislodging from the slide groove 40 due to spring action. This modular design allows the buffer 3 to be installed or removed from the designated position on the fixed rail 1 as a whole component after the guide rail assembly is completed. This not only simplifies the installation and maintenance process in narrow cabinets, but also helps to avoid the risk of the buffer components being scattered or damaged during transportation, and facilitates efficient operation that allows for immediate installation and use and immediate replacement.

[0026] The bottom of the aforementioned groove 40 is provided with a first positioning part 41, and the end of the transmission slider 5 facing the elastic energy storage member 6 is provided with a second positioning part 53. The first positioning part 41 is a protrusion, and the second positioning part 53 is a groove. The elastic energy storage member 6 is sleeved between the first positioning part 41 and the second positioning part 53. This solution sets the first positioning part 41 at the bottom of the groove 40 as a protrusion, and sets a matching groove at the corresponding end of the transmission slider 5 as the second positioning part 53, so that both ends of the elastic energy storage member 6 are respectively sleeved or snapped into the protrusion and the groove. This convex-concave mating structure achieves effective positioning and compact layout of the elastic energy storage member 6 in space, which helps to improve its axial stability during compression and rebound, reduce lateral bending or displacement, thereby making the transmission of buffer force more linear and consistent, the overall structure more stable, and the space utilization more efficient.

[0027] The aforementioned housing 4 is a flat, hollow rectangle. The main body of the transmission slider 5 has a rectangular cross-section, and its side surface slides against the corresponding inner wall of the slide groove 40. In this design, the housing 4 is designed with a square and flat shape, which makes it stable in positioning and less prone to deflection when installed on the guide rail. It also facilitates tight stacking during storage and transportation, effectively saving space. The sliding fit between the rectangular main body and the side wall of the slide groove 40 forms a stable surface contact guide, which can effectively resist the rotational torque generated when the push rod 21 acts on the inclined surface. This helps to prevent the transmission slider 5 from jamming or tilting during movement, and helps to ensure the smoothness and stability of the buffering process.

[0028] The guide slope 52 area of ​​the aforementioned functional part 51 is a hollow structure with an open front end. This design makes the guide slope 52 area a hollow structure with an open front end, which on the one hand helps to reduce the contact area with the push rod 21, thereby reducing sliding friction noise and friction, and improving the quietness effect; on the other hand, it also provides space for the plastic part to deform under stress and gives it a certain chip-holding capacity, thereby improving the smoothness and anti-interference of the structure.

[0029] The overall outline of the aforementioned transmission slider 5 is a right-angled trapezoid, and the actuating part 51 has a right-angled triangular structure. Compared with the complex design of the existing buffer 3, the transmission slider 5 of this solution adopts a right-angled trapezoidal outline, which forms a stable support between the inclined surface and the mounting part 55. This not only results in a clear force transmission path and high structural strength, but its regular geometric shape is also more suitable for injection molding, ensuring smooth demolding and improving production efficiency. Thus, while ensuring the stable and reliable buffering function, it also helps to achieve a lower overall cost.

[0030] Both the housing 4 and the transmission slider 5 are integrally molded using injection molding. This design features simple component structures that require no secondary processing, making it particularly suitable for large-scale, low-cost production. Furthermore, the use of engineering plastic materials not only achieves lightweighting but also helps ensure excellent noise reduction and wear resistance when in contact with the push rod 21.

[0031] The aforementioned limiting clamp 73 has elastic buckles 74 on opposite sides of its rear end, and the housing 4 has buckle holes 75. The elastic buckles 74 engage with the buckle holes 75 on the housing 4. The length of the elastic energy storage member 6 in its free state is greater than the distance from the second positioning part 53 of the transmission slider 5 to the edge of the buckle hole 75 near the opening of the slide groove 40 when it is fully compressed in the slide groove 40. After assembly, the pre-pressure of the elastic energy storage member 6 drives the transmission slider 5 to tend to move towards the opening of the slide groove 40. Then, through the abutment of the limiting protrusion 72 and the limiting clamp 73, the elastic buckles 74 are continuously pressed against the edge of the buckle hole 75 near the opening. Utilizing the pre-pressure of the elastic energy storage member 6, the transmission chain ultimately keeps the elastic buckles 74 continuously pressed against the leading edge of the buckle hole 75, forming a self-locking mechanism. This mechanism can effectively eliminate assembly gaps between parts, reduce the possibility of abnormal noise caused by vibration, and significantly improve the vibration resistance of clamp connections, which helps ensure the long-term reliability of products.

[0032] The inner side of the aforementioned working part 51 is provided with a reinforcing vertical rib 54. The reinforcing vertical rib 54 on the inner side of the working part 51 can effectively enhance the rigidity and impact resistance of the inclined area without increasing the wall thickness and material usage. This helps to prevent the key stress-bearing part from deforming or breaking under long-term and repeated impacts, thereby extending the service life of the buffer 3.

[0033] The main body of the aforementioned transmission slider 5 is a hollow structure with two vertical ribs on its inner side. The second positioning part 53 is a square groove, which is formed by the vertical ribs.

[0034] The outer wall of the aforementioned housing 4 is provided with an outwardly protruding mounting portion 55, and the mounting portion 55 is provided with mounting holes. The mounting holes of the housing 4 are connected to the bottom of the cabinet by self-tapping screws.

[0035] This invention provides a buffering solution that differs from traditional cylinder damping principles by constructing a purely mechanical buffer module consisting of a housing 4, a transmission slider 5, and an elastic energy storage component 6 working in synergy. The core of this solution lies in utilizing the guide ramp 52 on the transmission slider 5 to contact the moving parts, effectively converting the linear closing force into the internal force driving the transmission slider 5 to slide. This force conversion process avoids rigid impacts and effectively suppresses abnormal noises from a structural perspective. During this process, the linear closing force is efficiently and continuously converted into smooth compression of the elastic energy storage component 6 through the ramp structure. The resulting buffering force increases approximately linearly with the compression stroke, thus helping to achieve uniform deceleration control at the end of the closing phase of the moving rail 2, resulting in smoother movement. Compared with existing technologies, the buffer 3 of this invention mainly consists of three core components. Its fully mechanical configuration largely avoids the risk of oil leakage and reduces reliance on precision-fitted parts, thus exhibiting higher environmental tolerance and service life. Simultaneously, the structure is extremely simplified; each component is suitable for injection molding and can be quickly assembled via snap-fit ​​methods, significantly reducing material, processing, and assembly costs while ensuring functional reliability.

[0036] The present invention also discloses a linked pull-out basket 8, including a pull-out basket and a guide rail disposed on the pull-out basket, wherein the guide rail is the pull-out basket guide rail of the above-mentioned scheme.

[0037] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this invention should also fall within the protection scope of the claims of this invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this invention.

Claims

1. A pull-out basket guide rail, comprising a fixed rail, a movable rail, and a buffer, characterized in that: The fixed rail has a receiving space with an opening at the front end, and the movable rail is slidably installed in the receiving space; the rear of the movable rail has a downwardly protruding push rod. The buffer is disposed in the rear center of the accommodating space and includes: The housing has a sliding groove with a side opening; the transmission slider is slidably accommodated in the sliding groove, one end of which has an action part protruding outward from the groove, the action part including a guide slope, and the position of the push rod corresponds to the position of the guide slope; An elastic energy storage element is disposed in the groove, and its compression direction is consistent with the sliding direction of the transmission slider. When the movable rail is closed to the end, the push rod contacts the guide inclined surface and drives the transmission slider to slide along the groove. The sliding direction is perpendicular to the moving direction of the push rod, thereby compressing the elastic energy storage element to generate a buffer damping force. When the movable rail is opened, the elastic energy storage element drives the transmission slider to reset.

2. The pull-out basket guide rail according to claim 1, characterized in that, A limiting structure is provided between the transmission slider and the housing. The limiting structure is configured to limit the sliding stroke of the transmission slider and prevent it from dislodging from the groove.

3. The pull-out basket guide rail according to claim 2, characterized in that, The limiting structure includes a guide groove disposed on the housing, a limiting protrusion disposed on the transmission slider, and a limiting clamp fixed to the opening end of the housing; the limiting protrusion slides in cooperation with the guide groove, and when the transmission slider is reset to its maximum stroke, the limiting protrusion abuts against the limiting clamp.

4. The pull-out basket guide rail according to claim 3, characterized in that, The bottom of the slide groove is provided with a first positioning part, and the end of the transmission slider facing the elastic energy storage member is provided with a second positioning part. The first positioning part is a convex part, the second positioning part is a groove, and the elastic energy storage member is sleeved between the first positioning part and the second positioning part.

5. The pull-out basket guide rail according to claim 4, characterized in that, The housing is a flat, hollow rectangle, and the main body of the transmission slider has a rectangular cross-section, with its side surface slidingly engaging with the corresponding inner wall of the slide groove.

6. The pull-out basket guide rail according to claim 4, characterized in that, The overall outline of the transmission slider is a right-angled trapezoid, and the actuating part has a right-angled triangular structure.

7. The pull-out basket guide rail according to claim 1, characterized in that, The guide slope area of ​​the functional part is a hollow structure with an opening at the front end.

8. The pull-out basket guide rail according to claim 3, characterized in that, Both the housing and the transmission slider are integrally formed by injection molding.

9. The pull-out basket guide rail according to claim 8, characterized in that, The limiting clamp has elastic buckles on both sides of its rear end, and the housing has buckle holes. The elastic buckles on the housing engage with the buckle holes on the housing. The length of the elastic energy storage element in its free state is greater than the distance from the second positioning part of the transmission slider to the edge of the buckle hole near the opening of the slide groove when it is fully compressed in the slide groove.

10. A linked pull-out basket, characterized in that, It includes a pull-out basket and a guide rail disposed on the pull-out basket, the guide rail being a pull-out basket guide rail according to any one of claims 1-9.

Images