Lifting structure and lifting tea table

Abstract

The utility model discloses a kind of lifting structure and lifting tea table, the lifting structure includes upper frame and lower frame;Scissor type lifting mechanism, scissor type lifting mechanism is pivoted between upper frame and lower frame, scissor type lifting mechanism includes at least two groups of support rod components;Further include: linear actuator, linear actuator is set between at least two groups of support rod components, and with a horizontal plane forms preset inclination angle;And stabilizer bar, stabilizer bar is transversely set and fixedly connected between at least two groups of support rod components. Through the cooperation of scissor type lifting mechanism and linear actuator, stabilizer bar, the technical improvement of tea table lifting structure is realized. Linear actuator applies concentrated driving force to two groups of support rod components by stabilizer bar, ensure the complete synchronous motion of support rod component, make upper frame always keep horizontal state in lifting whole process, realize pure vertical lifting, completely solve the problem of external space encroachment in lifting process in prior art.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a lifting structure and a lifting coffee table. Background Technology

[0002] As modern living spaces become more compact and intelligent, the market demand for multifunctional furniture is growing. Among them, electric height-adjustable coffee tables, as a type of multifunctional furniture that can flexibly adjust height and change usage scenarios, have been widely favored by consumers. They can not only be used as regular coffee tables, but also be raised to serve as dining tables, desks, or bar counters, effectively improving space utilization.

[0003] Currently, most electric lift coffee tables on the market use motor-driven linkages or hinge mechanisms to switch the tabletop from a closed position to a raised position. However, some existing lift mechanisms, when activated, cause the tabletop to slide or flip towards the user, encroaching on the user's in-field space. This "forward unfolding" method not only inconveniences the user but also poses a safety risk of bumps and falls, reducing the user experience.

[0004] Therefore, how to design an electric lifting coffee table structure that does not encroach on external space and has high safety during the lifting process is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The main purpose of this utility model is to provide a lifting structure and a lifting coffee table to solve the above-mentioned technical problems.

[0006] The objective of this utility model can be achieved by adopting the following technical solution:

[0007] A lifting structure includes: an upper frame and a lower frame; a scissor-lift mechanism pivotally connected between the upper frame and the lower frame, the scissor-lift mechanism including at least two sets of support rod assemblies; further comprising: a linear actuator disposed between the at least two sets of support rod assemblies and forming a preset tilt angle with a horizontal plane; and a stabilizer rod laterally disposed and fixedly connected between the at least two sets of support rod assemblies; wherein the output end of the linear actuator is connected to the stabilizer rod, for driving the stabilizer rod to drive the at least two sets of support rod assemblies to move synchronously, so that the upper frame vertically lifts and lowers relative to the lower frame.

[0008] Each of the support rod assemblies includes a first support rod and a second support rod that are pivotally connected.

[0009] Wherein, one end of the first support rod is pivotally connected to the lower frame, and the other end is slidably connected to the upper frame; one end of the second support rod is pivotally connected to the upper frame, and the other end is slidably connected to the lower frame.

[0010] The upper frame and the lower frame are respectively provided with horizontal guide rails, and the other ends of the first support rod and the second support rod are respectively provided with sliding components between them and the corresponding horizontal guide rails.

[0011] The stabilizer bar is fixedly connected to the first support bar of the at least two sets of support bar assemblies.

[0012] The linear actuator further includes a fixed end, which is hinged to the lower frame.

[0013] The output end is fixedly connected to the geometric center of the stabilizer rod.

[0014] It also includes a limiting member, which is disposed between the upper frame and the lower frame.

[0015] The limiting member is at least one buffer post, the bottom end of which is fixed to the lower frame and the top end of which is vertically facing the upper frame. The top end of the buffer post is used to abut against the bottom surface of the upper frame when the upper frame descends to a preset lowest position.

[0016] The upper frame, the lower frame, the first support rod, and the second support rod are all made of metal square tubing.

[0017] A height-adjustable coffee table includes a height-adjustable structure as described above, and a tabletop fixed to the upper frame of the height-adjustable structure.

[0018] It also includes a base, the lifting structure is disposed inside the base, and the table is disposed on the top of the base.

[0019] The beneficial technical effects of this utility model are as follows: This utility model achieves a technical improvement in the lifting structure of coffee tables through the coordinated operation of a scissor-type lifting mechanism, a linear actuator, and a stabilizing rod. The linear actuator applies a concentrated driving force to the two sets of support rod assemblies through the stabilizing rod, ensuring the complete synchronous movement of the support rod assemblies. This keeps the upper frame horizontal throughout the lifting process, achieving purely vertical lifting and completely solving the problem of encroaching on external space during the lifting process in existing technologies. Simultaneously, the lateral connection design of the stabilizing rod effectively prevents tilting, jamming, or swaying that may occur due to unilateral force, significantly improving the stability and smoothness of the lifting motion. Since the horizontal motion component is eliminated, the lifting process does not encroach on the user's front space, avoiding the risk of bumps and collisions, and providing users with a safer and more comfortable user experience. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A three-dimensional schematic diagram of the lifting structure provided for an embodiment of this utility model;

[0022] Figure 2 This is a side view of the lifting structure provided in an embodiment of the present utility model;

[0023] Figure 3 This is an enlarged schematic diagram showing the details of the mounting support in the lifting structure provided in this embodiment of the utility model;

[0024] Figure 4 This is an enlarged schematic diagram showing the details of the sliding component in the lifting structure provided in an embodiment of the present utility model;

[0025] Figure 5 A three-dimensional schematic diagram of a height-adjustable coffee table provided for an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] In the diagram: 100-Lifting structure, 10-Upper frame, 20-Lower frame, 30-Scissor lift mechanism, 311-First support rod, 312-Second support rod, 32-Horizontal guide rail, 33-Sliding assembly, 331-Pin shaft, 333-Limiting part, 40-Linear actuator, 41-Output end, 42-Fixed end, 431-Housing, 432-Push rod, 44-Mounting support, 50-Stabilizing rod, 60-Limiting part, 210-Tabletop, 220-Base. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] like Figures 1-4 As shown, this utility model embodiment provides a lifting structure designed to solve the problems of existing lifting structures occupying additional external space and posing safety hazards during lifting, thereby achieving stable and pure vertical lifting and improving safety and comfort. Figure 1 As shown, the lifting structure 100 includes an upper frame 10 and a lower frame 20; a scissor lift mechanism 30, which is pivotally connected between the upper frame 10 and the lower frame 20, and includes at least two sets of support rod assemblies; a linear actuator 40, which is disposed between the at least two sets of support rod assemblies and forms a preset tilt angle with a horizontal plane; and a stabilizer 50, which is laterally disposed and fixedly connected between the at least two sets of support rod assemblies; wherein, the output end 41 of the linear actuator 40 is connected to the stabilizer 50, and is used to drive the stabilizer 50 to drive the at least two sets of support rod assemblies to move synchronously, so that the upper frame 10 can vertically lift and lower relative to the lower frame 20.

[0033] In this embodiment, the lifting structure 100 includes an upper frame 10, a lower frame 20, a scissor lift mechanism 30, a linear actuator 40, and a stabilizer bar 50.

[0034] Specifically, the upper frame 10 and the lower frame 20 are the supporting foundation of the entire lifting structure 100, serving as the top platform and base for the lifting movement, respectively. In this embodiment, both the upper frame 10 and the lower frame 20 are rectangular frame structures to provide a stable support surface.

[0035] The scissor lift mechanism 30 is a component that realizes the lifting function, and it is pivotally connected between the upper frame 10 and the lower frame 20. The scissor lift mechanism 30 includes at least two sets of parallel support rod assemblies. In this embodiment, to ensure the symmetry and stability of the structure, preferably, the scissor lift mechanism 30 includes exactly two sets of support rod assemblies, which are symmetrically distributed front-back along the transverse direction of the structure (to...). Figure 1 (For example, from a certain perspective).

[0036] This embodiment also includes a linear actuator 40 and a stabilizer bar 50. The linear actuator 40, specifically an electric actuator rod, is the power source for the entire structure. It is positioned within the space between the two sets of support rod assemblies. To provide effective driving torque and optimize spatial layout, the linear actuator 40 is not installed with its axis horizontal or vertical, but rather at a predetermined angle to a horizontal plane (e.g., the plane where the lower frame 20 is located).

[0037] Additionally, this embodiment also includes a stabilizer bar 50. The stabilizer bar 50 is arranged laterally, and its two ends are fixedly connected to two sets of support rod assemblies, thereby connecting the originally independent support rod assemblies into a whole and ensuring their consistency during movement.

[0038] In the power transmission path of this embodiment, the output terminal 41 of the linear actuator 40 (which may specifically be as follows) Figure 2 The end of the push rod 432 (shown) is connected to the middle part of the stabilizer bar 50. When the linear actuator 40 is working, its output end 41 extends or retracts, directly pushing or pulling the stabilizer bar 50. Since the stabilizer bar 50 is fixedly connected to the two sets of support rod assemblies, the displacement of the stabilizer bar 50 is synchronously transmitted to the two sets of support rod assemblies, forcing them to deform simultaneously (i.e., the scissor lift opens or closes). This coordinated movement ultimately causes the upper frame 10 connected to the upper end of the scissor lift mechanism 30 to smoothly rise or fall vertically relative to the lower frame 20.

[0039] Through the above structure, the linear actuator 40 applies a concentrated and symmetrical driving force to the entire scissor lift mechanism 30 through the stabilizer bar 50, which effectively ensures the synchronous movement of the two sets of support rod assemblies, avoids tilting, jamming or swaying problems that may be caused by unilateral force, and ensures that the upper frame 10 remains horizontal throughout the lifting process, realizing pure vertical displacement without generating additional translation in any horizontal direction, thereby solving the problems of occupying extra space and safety risks mentioned in the background art.

[0040] In one embodiment, each of the support rod assemblies includes a pivotally connected first support rod 311 and second support rod 312.

[0041] In this embodiment, to achieve the scissor-like telescopic function, each support rod assembly consists of two rods, namely a first support rod 311 and a second support rod 312. A pivot point is provided at the midpoint of each of these two support rods along their length, and the first support rod 311 and the second support rod 312 are pivotally connected through this pivot point.

[0042] This pivotal connection structure allows the first support rod 311 and the second support rod 312 to rotate relative to each other around the pivot point, forming an "X"-shaped cross structure. This scissor structure, formed by the pivotal connection of the first support rod 311 and the second support rod 312, can convert linear motion into effective lifting motion when the linear actuator 40 applies driving force through the stabilizer rod 50. When the driving force increases the scissor angle, i.e., the angle between the first support rod 311 and the second support rod 312 increases, the upper frame 10 rises; when the scissor angle decreases, the upper frame 10 lowers. Throughout the process, due to the geometric characteristics of the scissor structure, the upper frame 10 remains horizontal, achieving purely vertical lifting motion.

[0043] In one embodiment, one end of the first support rod 311 is pivotally connected to the lower frame 20, and the other end is slidably connected to the upper frame 10; one end of the second support rod 312 is pivotally connected to the upper frame 10, and the other end is slidably connected to the lower frame 20.

[0044] In this embodiment, in order to form an effective lifting unit, the connection method between the end points of the rods and the corresponding frame in each set of support rod assemblies is specific and mutually coordinated.

[0045] One end of the first support rod 311 is pivotally connected to the lower frame 20 via a pivot or other means, and this connection point serves as the fixed rotation center of the first support rod 311 at the bottom. The other end (i.e., the upper end) of the first support rod 311 is slidably connected to the upper frame 10.

[0046] Correspondingly, the connection method of the second support rod 312 is mirrored that of the first support rod 311. That is, one end of the second support rod 312 is pivotally connected to the upper frame 10 via a pivot or other means, and this connection point serves as the fixed rotation center of the second support rod 312 at the top. The other end (i.e., the lower end) of the second support rod 312 is slidably connected to the lower frame 20.

[0047] Through this cross-connection method of "pivoting at one end and sliding at the other," when the linear actuator 40 drives the two sets of support rod assemblies via the stabilizer bar 50, the first support rod 311 and the second support rod 312 will rotate around their respective pivot points, while their sliding ends will move along the sliding path on the corresponding frame. Specifically, the upper end of the first support rod 311 can slide horizontally on the upper frame 10, while the lower end of the second support rod 312 can slide horizontally on the lower frame 20. This constrained sliding allows the included angle between the first and second support rods 312 to change smoothly, thereby effectively converting the driving force into a purely vertical displacement of the upper frame 10 relative to the lower frame 20, ensuring the smoothness and directional certainty of the lifting process.

[0048] In one embodiment, the upper frame 10 and the lower frame 20 are respectively provided with horizontal guide rails 32, and the other ends of the first support rod 311 and the second support rod 312 are respectively provided with sliding components 33 between them and the corresponding horizontal guide rails 32.

[0049] In this embodiment, to enable the sliding ends of the first support rod 311 and the second support rod 312 to move along a preset and precise path, horizontal guide rails 32 are respectively provided on the upper frame 10 and the lower frame 20. Specifically, a horizontal guide rail 32 for guiding the upper end of the first support rod 311 to slide is provided on one side surface of the upper frame 10, i.e., the side facing the first support rod 311; similarly, a horizontal guide rail 32 for guiding the lower end of the second support rod 312 to slide is provided on one side surface of the lower frame 20, i.e., the side facing the second support rod 312. These horizontal guide rails 32 can be specifically implemented as horizontal grooves opened on the frame, or as raised tracks fixedly installed on the frame.

[0050] Accordingly, sliding components 33 that cooperate with the aforementioned horizontal guide rail 32 are respectively provided at the sliding end (upper end) of the first support rod 311 and the sliding end (lower end) of the second support rod 312. In a preferred embodiment, the sliding component 33 may be a roller or slider (not separately labeled in the figures) mounted on the end of the support rod. For example, a roller may be mounted on the upper end of the first support rod 311 via a pin 331, and the roller may be received within the horizontal groove of the upper frame 10 and roll therein; similarly, a roller may also be mounted on the lower end of the second support rod 312, and the roller may be received within the horizontal groove of the lower frame 20.

[0051] By setting up a cooperative structure between the horizontal guide rail 32 and the sliding component 33, the surface contact sliding, which might otherwise involve significant friction and instability, is transformed into precise, low-resistance linear guided motion. This ensures that the sliding end of the support rod can only move along a strictly horizontal straight line, effectively preventing lateral swaying or jamming during the lifting process, and significantly improving the operational stability and service life of the entire lifting structure 100.

[0052] In one specific embodiment, both the upper frame 10 and the lower frame 20 are constructed from hollow square tubing. The horizontal guide rail 32 is specifically manifested as a through-type groove or channel extending horizontally on the side wall of the square tubing constituting the upper frame 10 and the lower frame 20.

[0053] Accordingly, such as Figure 4 As shown, the sliding component 33 is designed to engage with the slot and effectively prevent it from dislodging from the slot. Specifically, the sliding component 33 can be an assembly, for example, consisting of a pin 331, a roller, and a limiting part 333. The main body of the pin 331 passes through the end hole of the support rod and extends into the slot of the frame square tube. The roller is fitted onto the portion of the pin 331 located within the slot and is used to roll on the inner wall of the slot to reduce friction.

[0054] The key feature is that the sliding assembly 33 has a limiting portion 333 protruding outside the slot. For example, after the pin 331 passes through the slot, its end is fixed with a limiting portion 333 (such as a nut, a retaining ring, or a stepped shoulder of the pin 331) with a diameter larger than the width of the slot. In this way, the main body of the sliding assembly 33 (such as a roller) moves inside the slot, while its limiting portion 333 is located outside the frame square tube. Since the cross-sectional dimension (such as the diameter) of the limiting portion 333 is larger than the width of the slot, it acts like a stop, effectively preventing the sliding assembly 33 from dislodging from the slot when subjected to lateral force.

[0055] This "internal sliding and external limiting" design not only ensures that the sliding end of the support rod can move smoothly horizontally along the guide rail, but also structurally eliminates the risk of sliding connection failure and support rod detachment from the frame, greatly enhancing the safety and reliability of the entire lifting structure 100.

[0056] In one embodiment, the stabilizer bar 50 is fixedly connected to the first support bar 311 of the at least two sets of support bar assemblies.

[0057] In this embodiment, the stabilizer bar 50 is arranged laterally, and its two ends are respectively fixedly connected to the first support bar 311 in the two sets of support bar assemblies. The fixed connection here can be achieved by welding, bolting, or riveting to ensure that the stabilizer bar 50 and the first support bar 311 form a rigid whole.

[0058] The first support rod 311 (i.e., a rod that is pivotally connected to the lower frame 20 at one end and slidably connected to the upper frame 10 at the other end) in each support rod assembly is located inside the scissor lift mechanism 30, while the second support rod 312 (i.e., a rod that is pivotally connected to the upper frame 10 at one end and slidably connected to the lower frame 20 at the other end) is located on the outside.

[0059] Connecting the stabilizer bar 50 to the inner first support bar 311 is a reasonable arrangement. Structurally, since the first support bar 311 is located on the inner side, and the first support bars 311 of the two sets of support bar assemblies are relatively close in space, the stabilizer bar 50 can span and connect the two sets of support bar assemblies with a relatively short length, thus forming a compact and rigid connecting bridge. When the output end 41 of the linear actuator 40 pushes or pulls the stabilizer bar 50, the driving force can be directly and evenly distributed to the two inner first support bars 311 through the stabilizer bar 50. Since the lower end of the first support bar 311 is pivotally connected to the lower frame 20, the driving force will effectively cause the two first support bars 311 to rotate synchronously around their lower pivot point, thereby collaboratively pushing the entire scissor lift mechanism 30 to extend or retract, ensuring complete synchronization of the movement of the support bar assemblies on both sides, and avoiding the occurrence of off-center loading and jamming.

[0060] In one embodiment, the linear actuator 40 further includes a fixed end 42 hinged to the lower frame 20.

[0061] In this embodiment, in order to provide a stable support and reaction force base for the linear actuator 40, thereby enabling it to effectively output thrust or pull, the linear actuator 40, in addition to having an output end 41 connected to the stabilizer bar 50, also includes a fixed end 42. This fixed end 42 is connected to the lower frame 20.

[0062] Specifically, such as Figure 3 As shown, a mounting bracket 44 or connecting lug specifically for mounting the linear actuator 40 can be pre-set on the lower frame 20. The fixed end 42 of the linear actuator 40 (i.e. the end of the overall fixed part of the linear actuator 40) is hinged to the mounting bracket 44 on the lower frame 20 via a pin or similar pivot.

[0063] During the lifting and lowering process of the scissor lift mechanism 30, the position of the stabilizer bar 50 changes as the angles of the first support rod 311 and the second support rod 312 change. This causes the linear actuator 40 to swing at a certain angle. The hinged connection allows the linear actuator 40 to freely swing at this angle to adapt to the geometric movement of the mechanism, thereby avoiding additional stress or jamming caused by motion interference and ensuring the smoothness of the entire lifting and lowering process.

[0064] In one specific embodiment, such as Figure 2 As shown, the linear actuator 40 specifically employs a conventional electric actuator, which includes a housing 431, a push rod 432 that is telescopic relative to the housing 431, and a drive motor and lead screw transmission mechanism (not separately labeled in the figures) that drive the push rod 432 to perform linear telescopic motion. The tail end of the housing 431 serves as the fixed end 42, and is hinged to the mounting bracket 44 on the lower frame 20 via a pin; the end of the push rod 432 serves as the output end 41, and is fixedly connected to the geometric center of the stabilizer 50. In this state, the axis of the housing 431 is tilted at a preset angle relative to the horizontal plane where the lower frame 20 is located. Preferably, the preset tilt angle is 20° to 40°, more preferably about 30°. This tilted arrangement is beneficial for achieving a larger stroke of the push rod 432 within a limited installation space, while matching the direction of the thrust with the direction of movement of the scissor lift mechanism 30, thereby improving lifting efficiency and avoiding motion interference. The drive motor of the electric linear actuator is installed inside the housing 431. It drives the lead screw to rotate, which in turn causes the nut and the connected linear actuator 432 to extend or retract along the axial direction, thereby realizing the output of thrust or pull force.

[0065] In one embodiment, the output terminal 41 is fixedly connected to the geometric center of the stabilizing rod 50.

[0066] In this embodiment, in order to ensure that the driving force generated by the linear actuator 40 can be uniformly and symmetrically transmitted to the support rod assemblies on both sides, and to avoid unstable movement due to eccentric force, the output end 41 of the linear actuator 40 is fixedly connected to the geometric center of the stabilizer 50.

[0067] Specifically, the stabilizer bar 50 is a transversely positioned bar whose geometric center is its midpoint along its length. The output end 41 of the linear actuator 40 (e.g., the end of the push rod 432) is securely connected to this midpoint of the stabilizer bar 50 via a connector (such as a fork joint or a ball joint, not shown in the figures).

[0068] When the linear actuator 40 operates, its thrust or pull force acts on the center of the stabilizer bar 50. Since the two ends of the stabilizer bar 50 are rigidly connected to the front and rear support bar assemblies respectively, this central force is evenly distributed to both ends of the stabilizer bar 50 and then transmitted to the support bar assemblies on both sides. This center-driven method fundamentally ensures that the driving force applied to the two sets of support bar assemblies is equal in magnitude and consistent in direction, thereby ensuring that they can move completely synchronously. This allows the upper frame 10 to remain horizontal during lifting and lowering, greatly improving the smoothness and reliability of operation.

[0069] In one embodiment, a limiting member 60 is also included, which is disposed between the upper frame 10 and the lower frame 20.

[0070] In this embodiment, as Figure 1 As shown, the limiting member 60 is disposed between the upper frame 10 and the lower frame 20. Its main function is to provide a physical endpoint for the lifting and lowering movement of the upper frame 10, so as to limit its range of motion and prevent structural damage caused by the stroke exceeding the design range.

[0071] In one specific implementation, the limiting member 60 can be used to limit the lowest position of the descent of the upper frame 10. For example, the limiting member 60 can be one or more vertically arranged rigid rods or buffer columns. The lower end of the limiting member 60 is fixed to the crossbeam (short side) or corner of the lower frame 20, and its upper end faces the upper frame 10. When the lifting structure 100 descends, the bottom of the upper frame 10 will contact the upper end of the limiting member 60 when it reaches the preset minimum safe height.

[0072] This contact acts as a physical barrier, reliably preventing the upper frame 10 from descending further. This design avoids over-compression of the scissor lift mechanism 30, thereby preventing the tabletop 210 above it from pressing against the base 220 below it due to excessive compression.

[0073] In other embodiments, the limiting member 60 may also take other forms, such as a downwardly extending vertical rod-like structure disposed on the upper frame 10, which contacts the lower frame 20 when it descends to a preset position.

[0074] In one embodiment, the limiting member 60 is at least one buffer post, the bottom end of which is fixed to the lower frame 20 and the top end is vertically facing the upper frame 10. The top end of the buffer post is used to abut against the bottom surface of the upper frame 10 when the upper frame 10 descends to a preset lowest position.

[0075] In this embodiment, the limiting member 60 takes the form of a buffer post, which is a cylindrical or square rod-shaped structure. The bottom end of the buffer post is securely connected to a designated position on the lower frame 20 by bolts, welding, or other fixing methods, such as the four corners or the midpoint of the short side of the lower frame 20. The buffer post extends vertically, with its top end facing the bottom surface of the upper frame 10.

[0076] When the upper frame 10 descends to the preset lowest safe position, the bottom surface of the upper frame 10 will contact the top of the buffer column. To provide better cushioning, an elastic pad or rubber pad can be installed at the top of the buffer column, or the buffer column itself can be made of a material with a certain degree of elasticity. In this way, when the upper frame 10 descends to the lowest position, the buffer column not only acts as a limiter, but also absorbs some of the impact energy through its elastic deformation, reducing hard impact and protecting other components of the lifting mechanism.

[0077] In one specific implementation, four buffer pillars can be provided, located at the four corners of the lower frame 20, corresponding to the four corners of the bottom surface of the upper frame 10. This configuration ensures that the upper frame 10 is subjected to uniform force when it reaches its lowest position, avoiding localized stress concentration.

[0078] In one embodiment, the upper frame 10, the lower frame 20, the first support rod 311, and the second support rod 312 are all made of metal square tubing.

[0079] In this embodiment, in order to ensure that the lifting structure 100 has sufficient load-bearing capacity, bending resistance and torsion resistance, the upper frame 10, lower frame 20, first support rod 311 and second support rod 312, which constitute the main frame and moving parts of the lifting mechanism, are all made of metal square tube structure.

[0080] Here, "metal square tube" refers to a metal tube with a square or rectangular hollow cross-section. Metal materials such as steel (e.g., galvanized square tubes) are selected. The square (or rectangular) tube cross-sectional shape, compared to solid rods or round tubes, has a higher section modulus of bending under the same weight. This means it can more effectively resist bending deformation, thus ensuring that the upper frame 10 does not sag significantly when bearing heavy loads. It also ensures that the first support rod 311 and the second support rod 312 are not easily bent under stress, improving the stability and rigidity of the entire structure.

[0081] Furthermore, the hollow square tube structure helps reduce the overall weight, allowing the linear actuator 40 to be driven with less power, thus reducing energy consumption. At the same time, the planar characteristics of the square tube facilitate processing operations such as cutting, welding, drilling, and connecting. For example, it is convenient to open horizontal grooves on its side walls or to weld and install the support 44, simplifying the manufacturing process.

[0082] Figure 5 A three-dimensional schematic diagram of a height-adjustable coffee table provided for an embodiment of this utility model is shown below. Figure 5As shown, corresponding to the above-mentioned lifting structure, this utility model embodiment also provides a lifting coffee table, which includes the lifting structure 100 of the aforementioned embodiment and a tabletop 210. The tabletop 210 is fixed to the upper frame 10 of the lifting structure 100. Through the smooth vertical lifting function of the lifting structure 100, the tabletop 210 can be moved in the vertical direction, thereby realizing the adjustment of the overall height of the coffee table, so that it can be conveniently switched between different usage modes such as coffee table, dining table or office desk.

[0083] In this embodiment, the tabletop 210 can be fixedly connected in a variety of ways. For example, multiple threaded holes can be provided on the top of the upper frame 10, and through holes can be provided at corresponding positions on the bottom of the tabletop 210, so that the tabletop 210 can be firmly fixed to the upper frame 10 by bolts.

[0084] In another embodiment, the tabletop 210 is designed as a structure with storage function, that is, the tabletop 210 itself is a storage box.

[0085] Specifically, the storage box has a hollow box-like structure, with its lower part fixedly connected to the upper frame 10, the upper part serving as a support plate, and its sides being open-ended to provide internal space. The internal space of the storage box can be used to store everyday items such as tea sets, remote controls, and books, thus combining desktop and storage functions.

[0086] In this embodiment, when the lifting structure 100 drives the upper frame 10 to rise and fall, the tabletop 210, which serves as a storage box, will rise and fall together with the internal storage space. This maintains the height-adjustable feature of the lifting coffee table and effectively improves the space utilization and functionality of the furniture, making it especially suitable for small apartments or usage scenarios with high space utilization requirements.

[0087] In one embodiment, a base 220 is further included, the lifting structure 100 is disposed inside the base 220, and the table 210 is disposed on the top of the base 220.

[0088] In this embodiment, the base 220 is a box structure with a certain height, having sufficient internal space to accommodate the entire lifting structure 100. The lifting structure 100 is completely disposed within the internal space of the base 220, while the tabletop 210 is disposed on the top of the base 220. The top of the base 220 is designed to be open or partially open to allow the tabletop 210 to extend out from it.

[0089] In this configuration, when the lifting structure 100 is in its lowest position, the top surface of the tabletop 210 is basically flush with or slightly higher than the top surface of the base 220, forming a unified, low-profile coffee table appearance, thus avoiding direct exposure of moving parts.

[0090] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A lifting structure, comprising: Top frame and bottom frame; A scissor lift mechanism, which is pivotally connected between the upper frame and the lower frame, and includes at least two sets of support rod assemblies; Its characteristic is that it further includes: A linear actuator, wherein the linear actuator is disposed between the at least two sets of support rod assemblies and forms a predetermined tilt angle with a horizontal plane; and A stabilizer bar, which is laterally arranged and fixedly connected between the at least two sets of support bar assemblies; The output end of the linear actuator is connected to the stabilizer bar, and is used to drive the stabilizer bar to drive the at least two sets of support rod assemblies to move synchronously, so that the upper frame can be vertically raised and lowered relative to the lower frame.

2. The lifting structure according to claim 1, characterized in that, Each of the aforementioned support rod assemblies includes a first support rod and a second support rod that are pivotally connected.

3. The lifting structure according to claim 2, characterized in that, One end of the first support rod is pivotally connected to the lower frame, and the other end is slidably connected to the upper frame; one end of the second support rod is pivotally connected to the upper frame, and the other end is slidably connected to the lower frame.

4. The lifting structure according to claim 3, characterized in that, The upper frame and the lower frame are respectively provided with horizontal guide rails, and the other ends of the first support rod and the second support rod are respectively provided with sliding components between them and the corresponding horizontal guide rails.

5. The lifting structure according to claim 3, characterized in that, The stabilizer bar is fixedly connected to the first support bar of the at least two sets of support bar assemblies.

6. The lifting structure according to claim 1, characterized in that, The linear actuator also includes a fixed end that is hinged to the lower frame.

7. The lifting structure according to claim 6, characterized in that, The output end is fixedly connected to the geometric center of the stabilizer bar.

8. The lifting structure according to claim 1, characterized in that, It also includes a limiting member, which is disposed between the upper frame and the lower frame.

9. The lifting structure according to claim 8, characterized in that, The limiting component is at least one buffer post. The bottom end of the buffer post is fixed to the lower frame, and the top end is vertically facing the upper frame. The top end of the buffer post is used to abut against the bottom surface of the upper frame when the upper frame descends to a preset lowest position.

10. The lifting structure according to claim 2, characterized in that, The upper frame, the lower frame, the first support rod, and the second support rod are all made of metal square tubing.

11. A height-adjustable coffee table, characterized in that, It includes a lifting structure as described in any one of claims 1 to 10, and a tabletop fixed to the upper frame of the lifting structure.

12. The height-adjustable coffee table according to claim 11, characterized in that, It also includes a base, the lifting structure is disposed inside the base, and the table is disposed on the top of the base.

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