Height-adjustable stand

Abstract

This utility model relates to a height-adjustable bracket, including a mounting base, a base, and multiple telescopic rods. Each telescopic rod includes a drive motor and a multi-stage support rod connected in sequence. The uppermost support rod is rotatably connected to the mounting base, and the lowermost support rod is rotatably connected to the base. The drive motor is mounted on one of the support rods and is used to drive the relative extension or retraction of the support rods. This application provides a height-adjustable bracket that allows adjustment of the mounting base's height by extending the telescopic rods relative to the base. The multi-stage telescopic rod structure, combined with the motor, enables adjustment over a greater distance.

Description

Technical Field

[0001] This utility model relates to the field of bracket technology, and in particular to a height-adjustable bracket. Background Technology

[0002] Height-adjustable brackets typically consist of a base, a height-adjustable column, and support pins. The base consists of a column and multiple support legs. The height-adjustable column is inserted into a cavity within the column. Multiple pairs of adjustment holes are spaced apart on the column, allowing users to adjust the bracket height as needed. The support pins are inserted into pin holes and corresponding adjustment holes to ensure the stability and safety of the bracket. Typical height-adjustable brackets often have multiple slender support rods. Adjusting the bracket height usually requires extending these rods outwards, changing the support point between the bracket and the ground, which can easily affect stability. Therefore, there is an urgent need for a height-adjustable bracket that is easy to adjust and allows for a wider adjustment range. Utility Model Content

[0003] Therefore, it is necessary to provide a height-adjustable bracket that can adjust the height of the mounting base by extending the telescopic rod relative to the base. The multi-stage telescopic rod structure, combined with a motor, can achieve a greater distance adjustment.

[0004] This application provides a height-adjustable bracket, including a mounting base, a base, and multiple telescopic rods. Each telescopic rod includes a drive motor and a series of telescopically connected support rods. The uppermost support rod is rotatably connected to the mounting base, and the lowermost support rod is rotatably connected to the base. The drive motor is mounted on one of the support rods and is used to drive the support rods to extend or retract relative to each other.

[0005] In the height-adjustable bracket provided in this application, the mounting base can be used to support objects. The mounting base can be configured as a disc shape, and the telescopic rod can provide support to the mounting base so that the height of the mounting base can be adjusted according to actual needs. Specifically, the telescopic rod includes a drive motor and a multi-stage support rod that is telescopically connected in sequence. The uppermost support rod of the telescopic rod is rotatably connected to the mounting base to adjust the angle between the uppermost part of the telescopic rod and the mounting base. The lowermost support rod of the telescopic rod is rotatably connected to the base to adjust the angle between the lowermost part of the telescopic rod and the base. The drive motor is located on one of the support rods and is used to drive the relative extension or retraction of the support rods. The multi-stage telescopic rod structure, combined with the drive motor, can achieve a greater distance adjustment.

[0006] In one embodiment, a plurality of the telescopic rods are included, the telescopic rods being arranged circumferentially along the mounting base.

[0007] In one embodiment, the side wall of the mounting base is provided with multiple bosses, and every two telescopic rods are rotatably connected to one of the bosses via the support rod.

[0008] In one embodiment, the upper distance between two telescopic rods connected to the same boss is less than the lower distance.

[0009] In one embodiment, the number of telescopic rods is six.

[0010] In one embodiment, the number of bosses is three, and each boss is distributed at a 120° angle in the circumferential direction of the mounting base; the base has a hexagonal structure, and the lowermost support rod of the telescopic rod is connected to the vertex region of the hexagonal structure.

[0011] In one embodiment, the telescopic rod includes four levels of support rods, and the support rods of the same telescopic rod are connected in a telescopically extendable manner in the length direction.

[0012] In one embodiment, the drive motor is fixed to the side wall of the lowest support rod of the telescopic rod.

[0013] In one embodiment, the bottom of the lowest support rod in the telescopic rod includes a support plate, and is rotatably connected to the base through the support plate, and the drive motor is located on the support plate.

[0014] In one embodiment, the radial width of the support rods in the telescopic rod gradually increases from top to bottom, and the upper support rod is sleeved by the adjacent lower support rod. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0016] Figure 1 A schematic diagram of the structure of a height-adjustable bracket provided in an embodiment of this application;

[0017] Figure 2 A schematic diagram of the structure of a height-adjustable bracket provided in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the structure of a height-adjustable bracket provided in an embodiment of this application.

[0019] Reference numerals: Height-adjustable bracket 10; Mounting base 20; Boss 21; Base 30; Telescopic rod 40; Drive motor 41; Support rod 42; Support plate 421. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are 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 utility model.

[0022] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Since the concept of parallel mechanisms was first proposed decades ago, they have developed rapidly and are now applied in an increasing number of fields. From initial flight simulators to modern machine tools, multi-axis measuring machines, microelectromechanical systems (MEMS), force sensors, entertainment and leisure, food packaging, medical and health care, and vibration reduction and isolation, parallel mechanisms are ubiquitous. The development of parallel mechanisms has evolved from six-degree-of-freedom mechanisms to more specialized low-degree-of-freedom mechanisms. In recent years, many scholars have focused their research on low-degree-of-freedom parallel mechanisms, resulting in a proliferation of novel configurations, and some low-degree-of-freedom mechanisms have already been applied. Compared to traditional series structures, parallel mechanisms possess unique advantages such as high structural stiffness, high motion speed, and non-accumulating errors. However, they also have inherent drawbacks such as strong motion coupling, small workspace, and a tendency to generate singularities. Therefore, by combining the advantages and disadvantages of series and parallel mechanisms, and organically integrating them to fully leverage their strengths, hybrid mechanisms will exhibit better performance.

[0025] Height-adjustable brackets typically consist of a base, a height-adjustable column, and support pins. The base consists of a column and multiple support legs. The height-adjustable column is inserted into a cavity within the column, and multiple pairs of adjustment holes are spaced apart on the column, allowing users to adjust the bracket height as needed. Support pins are inserted into pin holes and corresponding adjustment holes to ensure the stability and safety of the bracket. General height-adjustable brackets often have multiple slender support rods, requiring the rods to be extended outwards when adjusting the bracket height. This changes the support point between the bracket and the ground, potentially affecting stability. Therefore, there is an urgent need for a height-adjustable bracket with a stable, simple, and highly flexible overall structure. Utilizing the concept of parallel mechanisms and addressing the problems that need to be solved in practical applications using existing technologies, this application provides a height-adjustable bracket that allows adjustment of the mounting height by extending the telescopic rod relative to the base. The multi-stage telescopic rod structure, combined with a motor, enables adjustments over a greater distance.

[0026] refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the first state structure of the height-adjustable support 10 provided in an embodiment of this application. Figure 2 This is a side view of the first state structure of the height-adjustable support 10 provided in an embodiment of this application. Figure 3This is a schematic diagram of the second state structure of a height-adjustable bracket 10 provided in an embodiment of this application. To solve the above problems, this application provides a height-adjustable bracket 10, including a mounting base 20, a base 30, and multiple telescopic rods 40. Each telescopic rod 40 includes a drive motor 41 and multiple support rods 42 that are connected in a series of telescopic links. The uppermost support rod 42 of the telescopic rods 40 is rotatably connected to the mounting base 20, and the lowermost support rod 42 of the telescopic rods 40 is rotatably connected to the base 30. The drive motor 41 is mounted on one of the support rods 42 and is used to drive the support rods 42 to extend or retract relative to each other.

[0027] See Figure 1 , Figure 2 and Figure 3 In this height-adjustable bracket 10, the mounting base 20 can be used to support objects. The mounting base 20 can be set in a disc shape. The telescopic rod 40 can provide support to the mounting base 20 so that the height of the mounting base 20 can be adjusted according to actual needs. Specifically, the telescopic rod 40 includes a drive motor 41 and a multi-stage support rod 42 that is telescopically connected in sequence. The uppermost support rod 42 of the telescopic rod 40 is rotatably connected to the mounting base 20 to adjust the angle between the uppermost part of the telescopic rod 40 and the mounting base 20. The lowermost support rod 42 of the telescopic rod 40 is rotatably connected to the base 30 to adjust the angle between the lowermost part of the telescopic rod 40 and the base 30. The drive motor 41 is located on one of the support rods 42. The drive motor 41 is used to drive the support rods 42 to extend or retract relative to each other. The multi-stage telescopic rod 40 structure, in conjunction with the drive motor 41, can achieve a greater distance. The torque generated by the rotation of the motor is transmitted and rotated through gear transmission or by directly driving the shaft. In some embodiments, the drive motor 41 may include several parts such as a motor, a reducer, an output shaft, and a transmission chain. The motor is the core component of the drive device. After its internal rotor is connected to AC or DC power, it generates a certain torque to drive the external output shaft. Then, the reducer converts the high-speed, low-torque output of the motor into low-speed, high-torque output to drive the output shaft to rotate, providing sufficient thrust or torque to change the position of the support rod 42. Specifically, the output shaft can be connected to the support rod 42 via gears or a conveyor belt.

[0028] In some embodiments, the drive motor 41 is fixed to the side wall of the lowest support rod 42 of the telescopic rod 40. Since the drive motor 41 has a moving weight, placing it at the lowest point of the telescopic rod 40 lowers the center of gravity of the height-adjustable bracket 10, thereby improving its stability. The drive motor 41 can be a cylinder, which works by expanding the gas after combustion in a sealed cylinder, converting the thermal energy of gasoline into mechanical energy to drive the piston. Specifically, fuel is injected into the cylinder, and the compression and combustion forces drive the piston, which in turn converts the piston's force into the crankshaft's rotational kinetic energy. In some embodiments, the drive component can be a lead screw guide, a mechanical transmission device consisting of a lead screw, a nut, and a guide rail. A lead screw is a threaded shaft that converts the rotational motion of the input shaft into linear motion on the guide rail, thereby achieving motion control of the mechanical equipment. It should be noted that the drive component is not limited to pneumatic, hydraulic, or electric drives; the mechanism includes, but is not limited to, lead screw guides, synchronous belt drives, or linear motors.

[0029] See Figure 1 , Figure 2 and Figure 3In some embodiments, the telescopic rod 40 is provided with multi-stage support rods 42. The number and length of the support rods 42 provided on each telescopic rod 40 can be set according to actual needs. The upper support rod 42 is sleeved by the adjacent lower support rod 42. The radial width of the support rods 42 in the telescopic rod 40 gradually increases from top to bottom, so that the upper support rod 42 can be sleeved by the lower support rod 42. At the same time, the support rod 42 with a larger radial width will be heavier than the support rod 42 with a smaller radial width. The lower the support rod 42, the greater the weight, which can lower the overall center of gravity of the telescopic rod 40 and thus increase the stability of the height-adjustable bracket 10. For example, when a telescopic rod 40 is provided with two stages of support rods 42, the telescopic rod 40 includes a first rod body and a second rod body, wherein the first rod body is telescopically connected to the second rod body. This structural design of the first rod body being telescopically connected to the second rod body can adjust the overall length of the telescopic rod 40 of the height-adjustable bracket 10. When the user is not using the height-adjustable bracket 10, the telescopic rod 40 can be adjusted to a shorter length by retracting the first rod into the second rod. When the user is using the height-adjustable bracket 10, the telescopic rod 40 needs to be set to a longer length. This can be achieved by extending the first rod outside the second rod, so that the sum of the exposed lengths of the first and second rods is the adjustable length of the telescopic rod 40. In some embodiments, the second rod has a telescopic opening on the side facing the mounting base 20. The first rod is fitted into the second rod through the telescopic opening, allowing it to extend or retract. In some embodiments, a connector can be provided at the telescopic opening. The connector can be a small circular sheet of metal or made of plastic. The connector connects the first and second rods, ensuring that the first rod does not loosen or slip during telescopic movement, and also serves to fix the first rod to a specific length as required by the user. One end of the first rod is rotatably connected to the mounting base 20, and one end of the second rod is rotatably connected to the base 30. The telescopic rod 40 can rotate relative to the mounting base 20 and the base 30 respectively to adjust the height of the mounting base 20. The overall structure is stable and simple, and the height-adjustable bracket 10 is highly flexible.

[0030] See Figure 1 , Figure 2 and Figure 3In some embodiments, the height-adjustable bracket 10 includes multiple telescopic rods 40 arranged circumferentially around the mounting base 20. This ensures that during adjustment, the multiple telescopic rods 40 can adjust the height of the mounting base 20 from different positions, thereby achieving a relatively stable state for the mounting base 20 during adjustment. The side wall of the mounting base 20 is provided with multiple bosses 21. Every two telescopic rods 40 are rotatably connected to one boss 21 via a support rod 42. The bosses 21 connect the side wall of the mounting base 20 and the support rod 42, making installation and disassembly more flexible. For example, the mounting base 20 may be disc-shaped with three bosses 21 distributed at a 120° angle circumferentially around the mounting base 20. Two telescopic rods 40 are rotatably connected to each evenly distributed boss 21, resulting in a total of six telescopic rods 40. The upper distance between two telescopic rods 40 connected to the same boss 21 is smaller than the lower distance, ensuring that the two telescopic rods 40 connected to the same boss 21 do not interfere with each other, and the directions of the supporting forces they provide to the mounting base 20 are different, thus achieving support for the mounting base 20 in multiple directions. Under the action of the six telescopic rods 40, the mounting base 20 can be subjected to uniform force, thereby ensuring that the mounting base 20 remains in a relatively stable state during adjustment, improving its stability. The base 30 can be hexagonal in structure, with the lowest support rod 42 of the telescopic rods 40 connected to the vertex region of the hexagonal structure. The hexagon has equal side lengths and angles, giving the hexagonal base 30 the same strength and stability in all directions. Each corner of the hexagon is supported by three adjacent sides, a structure that ensures balanced pressure, thereby guaranteeing the robustness of the base 30.

[0031] In another embodiment, the mounting base 20 is disc-shaped with four protrusions 21. Each protrusion 21 is distributed at a 90° angle around the circumference of the mounting base 20. Two telescopic rods 40 are rotatably connected to each evenly distributed protrusion 21, resulting in eight telescopic rods 40. The eight telescopic rods 40 ensure even force distribution on the mounting base 20, thereby maintaining a relatively stable state during adjustment and improving its stability. The base 30 can be octagonal, with the lowest support rod 42 of the telescopic rods 40 connected to the vertex region of the octagonal structure.

[0032] In some embodiments, the telescopic rod 40 includes four-stage support rods. Each stage of the support rod 42 of the same telescopic rod 40 is sequentially telescopically connected in the length direction. For example, the four-stage support rod includes a first rod body, a second rod body, a third rod body, and a fourth rod body connected in sequence. One end of the first rod body is rotatably connected to the mounting base 20. The first rod body is telescopically connected to the second rod body, the second rod body is telescopically connected to the third rod body, the third rod body is telescopically connected to the fourth rod body, and one end of the fourth rod body is rotatably connected to the base 30. In this way, the telescopic connection relationship of the four-stage support rods can increase the flexibility of the telescopic rod 40 adjustment bracket, so that the telescopic rod 40 of the height-adjustable bracket 10 has a larger adjustment range, realizing multi-stage adjustment of the height-adjustable bracket 10. When the first and second rod bodies of the telescopic rod 40 are fully extended, the stroke of the telescopic rod 40 increases exponentially. At the same time, the structure is simple, without complex mechanisms, and the motion calculation of the support rod 42 assembly is relatively mature. Compared with the range extender mechanisms in the prior art, the height-adjustable bracket 10 provided in this application utilizes a multi-stage telescopic body, making the overall structure of the bracket relatively simple and the motion calculation relatively simple, which is conducive to improving ease of use and enhancing the user experience.

[0033] In some embodiments, a first damping element connects the telescopic rod 40 and the mounting base 20. This first damping element enables a damped rotational connection between the telescopic rod 40 and the mounting base 20. This damped rotational connection reduces the impact and vibration generated during shaft movement through a damper, thereby ensuring the normal operation of the telescopic rod 40 and extending its service life. The core of the damped rotational connection is the damping element, which converts vibration energy into heat energy, effectively reducing shaft vibration. The first damping element connects the telescopic rod 40 and the mounting base 20 and also includes a damping shaft. This damping shaft is used to withstand both bending and torque during rotation. Friction is generated through the compression between shims, and the magnitude of the friction depends on the number of shims and the tightness of the nuts. A second damping element connects the telescopic rod 40 and the base 30, enabling a damped rotational connection between them. Both the first and second damping elements reduce vibration and energy consumption. Their main function is to provide resistance to movement and dissipate kinetic energy, thereby reducing vibration and impact. In some embodiments, the first and second damping elements can be made of rubber, a commonly used damping material with good shock absorption performance. Different types of rubber, such as natural rubber, nitrile rubber, and polyurethane rubber, will have different damping effects depending on their hardness, density, and composition. In some embodiments, the first and second damping elements can be made of plastic. Certain plastics, such as polyacrylate, polyurethane, and polyvinyl butyral, can have their damping performance significantly improved by adjusting the formulation and processing technology. In some embodiments, the first and second damping elements can be made of fiber materials, such as carbon fiber, glass fiber, and asbestos fiber, which not only enhances the strength and stiffness of the material but also maintains a good damping effect. In some embodiments, the base 30 can be made of iron. The iron base 30 is usually made of cold-rolled steel plate, stainless steel, cast iron, etc., and has the advantages of being hard and durable. The base 30 can also be made of aluminum. Compared with the iron base 30, the aluminum base 30 is lighter and has better rust resistance. The stability of the base 30 helps to improve the stability of the height-adjustable bracket 10 during use.

[0034] See Figure 1 , Figure 2 and Figure 3 The bottom of the lowest support rod 42 in the telescopic rod 40 includes a support plate 421, and is rotatably connected to the base 30 through the support plate 421. The drive motor 41 is located on the support plate 421. The end of the telescopic rod 40 near the base 30 is fixedly connected to the support plate 421. When the support plate 421 rotates relative to the base 30, the telescopic rod 40 and the drive motor 41 also rotate relative to the base 30 at the same time.

[0035] See Figures 1-3When using the height-adjustable bracket 10 provided in this application, items can be installed in the mounting base 20 according to actual needs. The mounting base 20 is disc-shaped with three protrusions 21. Each protrusion 21 is distributed at a 120° angle around the circumference of the mounting base 20. Two telescopic rods 40 are rotatably connected to each evenly distributed protrusion 21, resulting in six telescopic rods 40. Under the action of the six telescopic rods 40, the mounting base 20 can be subjected to uniform force, thereby ensuring that the mounting base 20 remains in a relatively stable state during adjustment and improving its stability. The base 30 can be hexagonal in structure. The lowest support rod 42 of the telescopic rods 40 is connected to the vertex area of ​​the hexagonal structure. The hexagon has equal side lengths and angles, which makes the hexagonal base 30 have the same strength and stability in all directions. The drive motor 41 is fixed to the side wall of the lowest support rod 42 of the telescopic rod 40 and is used to drive the support rods 42 to extend or retract relative to each other. By extending the telescopic rod 40 relative to the base 30 to adjust the height of the mounting base 20, the multi-stage telescopic rod 40 structure, in conjunction with the motor, can achieve a greater distance adjustment.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A highly adjustable support, characterized in that, The device includes a mounting base, a base, and multiple telescopic rods. Each telescopic rod includes a drive motor and multiple support rods that are connected in series. The uppermost support rod is rotatably connected to the mounting base, and the lowermost support rod is rotatably connected to the base. The drive motor is located on one of the support rods and is used to drive the support rods to extend or retract relative to each other.

2. The highly adjustable stand of claim 1, wherein, It includes multiple telescopic rods, which are arranged circumferentially along the mounting base.

3. The highly adjustable stand of claim 2, wherein, The side wall of the mounting base is provided with multiple protrusions, and every two telescopic rods are rotatably connected to one of the protrusions through the support rod.

4. The highly adjustable stand of claim 3, wherein, The upper distance between the two telescopic rods connected to the same boss is smaller than the lower distance.

5. The highly adjustable stand of claim 3, wherein, The number of telescopic rods is six.

6. The highly adjustable stand of claim 5, wherein, The number of protrusions is three, and each protrusion is distributed at a 120° angle to the circumference of the mounting base; the base has a hexagonal structure, and the lowermost support rod of the telescopic rod is connected to the vertex region of the hexagonal structure.

7. The height-adjustable bracket according to claim 1, characterized in that, The telescopic rod includes four levels of support rods, and the support rods of the same telescopic rod are connected in a telescopic manner in the length direction.

8. The height-adjustable bracket according to claim 1, characterized in that, The drive motor is fixed to the side wall of the lowest support rod of the telescopic rod.

9. The height-adjustable bracket according to claim 1, characterized in that, The bottom of the lowest support rod in the telescopic rod includes a support plate, and is rotatably connected to the base through the support plate. The drive motor is located on the support plate.

10. The height-adjustable bracket according to claim 1, characterized in that, The radial width of the support rods in the telescopic rod gradually increases from top to bottom, and the upper support rod is sleeved by the adjacent lower support rod.

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