Lifting stand column and electric lifting table

Abstract

The invention belongs to the technical field of lifting tables, and particularly relates to a lifting stand column and an electric lifting table. The device comprises a nested pipe assembly, a driving mechanism installed in the pipe assembly, a partition plate arranged in the pipe assembly and an operation panel installed at the top of the pipe assembly. The baffle is located at the upper end of the pipe assembly. A mounting cavity is defined by the partition plate, the pipe assembly and the operation panel; a control module and a power supply module are mounted in the mounting cavity; the control module, the power module and the lifting motor are all electrically connected with the operation panel. An output shaft of the lifting motor is in transmission connection with the driving mechanism. The control module, the power module and the lifting motor are all integrated in the whole stand column, compared with the prior art, all electrical components are completely hidden in the stand column, visual interference of the space below the table is eliminated fundamentally, and the whole table can be kept clean, tidy and attractive at any height.

Description

Technical Field

[0001] This invention belongs to the field of height-adjustable desk technology, specifically relating to a height-adjustable column and an electric height-adjustable desk. Background Technology

[0002] Most electric height-adjustable desks on the market currently adopt a split-type structure. From a system composition perspective, it mainly includes four parts: the height-adjustable column, the desktop, the control unit, and the operating unit. Among them, the height-adjustable column usually only integrates the motor and transmission components, while the control unit is a separate box, which is fixed under the desktop with screws and uses multiple wire harnesses to achieve electrical connection with the operating unit and the motors in each column. It also needs to be connected to a separate power cord to obtain AC power.

[0003] The drawbacks of this traditional architecture are quite obvious in application. On the one hand, the control box, power cord, and wiring harnesses connecting each column are all exposed under the desktop, which can easily cause visual clutter, especially in office or home environments, and fails to meet users' requirements for the aesthetics and simplicity of the entire desktop. On the other hand, the scattered components and complex wiring also increase the difficulty of production assembly and on-site installation. Whether it is the manufacturer assembling on the production line or the user installing it themselves, it is necessary to flip the desktop, sort out multiple cables, and connect them one by one, which not only affects efficiency but also easily leads to reliability issues such as wiring errors or loose interfaces. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies, such as external control units, messy wiring harnesses, and inconvenient installation, and to provide a lifting column and electric lifting table with high integration, simple appearance, and convenient installation.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] As a first aspect, the present invention provides a lifting column, comprising: a nested tube assembly, a drive mechanism installed within the tube assembly, a baffle plate disposed inside the tube assembly, and an operation panel installed on the top of the tube assembly; the baffle plate is located at the upper end of the tube assembly; the baffle plate, the tube assembly, and the operation panel enclose a mounting cavity.

[0007] The mounting cavity houses a control module and a power module; a lifting motor is mounted on the lower end face of the partition plate; the operation panel, the lifting motor, and the power module are all electrically connected to the control module; the output shaft of the lifting motor is connected to the drive mechanism.

[0008] Furthermore, the tube assembly includes at least an inner tube and an outer tube nested within each other; the drive mechanism is used to drive the inner tube and the outer tube to extend and retract linearly relative to each other.

[0009] The baffle is disposed inside the outer tube, and the operation panel is mounted on the top of the outer tube.

[0010] Furthermore, the drive mechanism includes:

[0011] Speed ​​reduction device;

[0012] A lead screw drive device is coaxially arranged with the output shaft of the reduction device, and is used to drive the inner tube to extend and retract linearly relative to the outer tube.

[0013] Furthermore, the reduction device adopts one of the following: a two-stage planetary reduction device, a two-stage interlaced shaft reduction device, and a two-stage parallel shaft reduction device.

[0014] Furthermore, a mounting base is provided at the lower part of the operation panel;

[0015] The mounting base and the outer tube are engaged by a snap-fit ​​assembly.

[0016] Furthermore, the engagement component includes:

[0017] At least two guide plates are fixedly mounted on the lower end surface of the operation panel, respectively located at the front and rear ends of the operation panel;

[0018] At least two latches are fixedly installed on the lower end surface of the operation panel, respectively located on the left and right sides of the operation panel;

[0019] The guide plate, buckle, and operation panel are all made of plastic.

[0020] Furthermore, the mounting base is provided with a first connection port for connecting the drive motor and a second connection port for connecting the power module.

[0021] Furthermore, the operation panel or control module is equipped with a Bluetooth module or a 2.4G module.

[0022] Furthermore, the operation panel is also provided with a charging and discharging interface; the charging and discharging interface is electrically connected to the power module through the control module and is used to charge the power module or supply power to the outside.

[0023] Furthermore, the power module uses a battery pack, which is a polymer lithium battery pack.

[0024] Furthermore, the voltage of the battery pack is 12V to 36V.

[0025] Furthermore, the operation panel is equipped with an overheat protection device and an overcurrent protection device.

[0026] As a second aspect, the present invention also provides an electric height-adjustable desk, characterized in that it includes a tabletop, a table frame, at least one of the above-described height-adjustable columns mounted on the table frame, and a support foot plate mounted on the lower end face of the height-adjustable column;

[0027] The tabletop is provided with a clearance groove for the extension of the control panel.

[0028] Specifically, two lifting columns are provided, located at both ends of the table frame.

[0029] Specifically, the tube assembly is fixedly connected to the table frame via a fixing plate.

[0030] The beneficial effects of the lifting column and electric lifting table of the present invention are:

[0031] This invention integrates the control module, power module, and lifting motor within the entire column by adding a partition plate inside the pipe assembly and placing an operation panel on top of the assembly. The partition plate, operation panel, and outer pipe together form an independent mounting cavity. The control module and power module are installed within this cavity, and the lifting motor is mounted on the lower surface of the partition plate. Compared to existing technologies where the control box is externally mounted under the desktop with messy exposed wiring, this invention completely conceals all electrical components within the column, eliminating visual interference from the space under the desk and ensuring a neat and aesthetically pleasing appearance at any height.

[0032] Meanwhile, the control module, motor, and power module of this invention's lifting table are pre-connected internally and encapsulated on the top of the tube assembly at the factory, making the entire lifting column an ​​independent module integrating mechanical and electrical components. During installation, simply fix the lifting column to the table frame and expose the control panel through the pre-drilled recess in the tabletop, completely eliminating the cumbersome steps of flipping the tabletop, fixing the control box, and individually connecting multiple cables as in traditional solutions. This reduces assembly time at the manufacturing end and significantly simplifies installation for end users, effectively resolving reliability issues caused by complex wiring or loose interfaces.

[0033] Furthermore, by setting a Bluetooth module or a 2.4G module on the operation panel or control module, the present invention can realize real-time communication between multiple lifting columns. After the Bluetooth modules or 2.4G modules on multiple lifting columns are paired, the synchronous lifting of multiple lifting columns can be realized. Attached Figure Description

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1 This is a perspective view of the lifting column in an embodiment of the present invention.

[0036] Figure 2 This is a schematic diagram of the internal structure of the lifting column in an embodiment of the present invention.

[0037] Figure 3 This is a bottom view of the lifting column in an embodiment of the present invention.

[0038] Figure 4 yes Figure 3 Sectional view at point AA.

[0039] Figure 5 This is a first-view perspective perspective view of the operation panel and control module in an embodiment of the present invention.

[0040] Figure 6 This is a second-view perspective perspective view of the operation panel and control module in an embodiment of the present invention.

[0041] Figure 7 This is an installation diagram of the baffle and the lifting motor in an embodiment of the present invention.

[0042] Figure 8 This is a first-view perspective perspective view of the height-adjustable table in an embodiment of the present invention.

[0043] Figure 9 This is a second-view perspective perspective view of the height-adjustable table in an embodiment of the present invention.

[0044] Figure 10 This is a partial structural diagram of the height-adjustable table in an embodiment of the present invention.

[0045] In the diagram: 1. Lifting column; 11. Pipe assembly; 111. Inner pipe; 112. Outer pipe; 13. Drive mechanism; 131. Reduction device; 132. Screw drive device; 14. Baffle plate; 15. Operation panel; 151. Mounting base; 1511. First connection port; 1512. Second connection port; 152. Charging / discharging interface; 153. Snap-fit ​​assembly; 1531. Guide plate; 1532. Buckle; 16. Mounting cavity; 18. Lifting motor; 19. Power module; 2. Tabletop; 3. Table frame; 4. Clearance groove; 5. Support foot plate. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0047] like Figures 1-7A specific embodiment of the lifting column 1 of the present invention shown includes: a nested pipe assembly 11, a drive mechanism 13 installed within the pipe assembly 11, a baffle plate 14 disposed inside the pipe assembly 11, and an operation panel 15 installed on the top of the pipe assembly 11; the baffle plate 14 is located at the upper end of the pipe assembly 11; the baffle plate 14, the pipe assembly 11, and the operation panel 15 enclose a mounting cavity 16. A control module and a power module 19 are installed in the mounting cavity 16; a lifting motor 18 is installed on the lower end face of the baffle plate 14; the control module, the lifting motor 18, and the power module 19 are all electrically connected to the operation panel 15; the output shaft of the lifting motor 18 is drively connected to the drive mechanism 13.

[0048] In a preferred embodiment, the pipe assembly 11 in this embodiment includes at least an inner pipe 111 and an outer pipe 112 nested together. The drive mechanism 13 is used to drive the inner pipe 111 and the outer pipe 112 to extend and retract linearly relative to each other. The baffle plate 14 is disposed inside the outer pipe 112, and the operation panel 15 is installed on the top of the outer pipe 112.

[0049] like Figures 2 to 4 As shown, during assembly, the control module and power module 19 are pre-installed in the enclosed mounting cavity 16 formed by the partition plate 14, the upper end of the outer tube 112, and the operation panel 15. The lifting motor 18 is fixedly installed on the lower end face of the partition plate 14 and electrically connected inside the outer tube 112. When installing on the lifting table, it is only necessary to fix the column to the table frame 3 and expose the operation panel 15 from the clearance groove 3 reserved in the tabletop 2. There is no need to flip the tabletop to install an independent control box as in traditional technology, nor is it necessary to plug in multiple motor wires and control wires one by one. The entire installation process is simplified to the positioning and fastening of a single module. During use, the user issues a lifting command through the operation panel 15. After receiving the signal, the control module drives the lifting motor 18 to operate. The output shaft of the lifting motor 18 drives the inner tube 111 to linearly extend and retract relative to the outer tube 112 through the drive mechanism 13, thereby realizing the smooth lifting and lowering of the tabletop. Since all electrical components are built into the outer conduit, there are no longer any external control boxes or messy wiring harnesses under the table, resulting in a clean and tidy appearance. This also reduces the number of external interfaces, avoiding reliability issues such as poor contact caused by cable pulling or loose interfaces. In addition, the power module 19 is integrated into the column, saving the space occupied by a separate power adapter and further improving the compactness and ease of installation of the entire table.

[0050] It should be understood that the pipe assembly 11 in this embodiment can be a two-section or three-section lifting column. A two-section lifting column only includes an inner pipe 111 and an outer pipe 112, while a three-section lifting column includes an inner pipe, a middle pipe, and an outer pipe. Furthermore, the lifting column includes upright lifting columns and inverted lifting columns. An upright lifting column refers to an inner pipe 111 on top and an outer pipe 112 on the bottom; an inverted lifting column refers to an outer pipe 112 on top and an inner pipe 111 on the bottom. This is already an industry consensus. To avoid unnecessary detail, this application uses an inverted two-section lifting column as an example to introduce the technical solution. Other types of lifting columns are also within the scope of protection of this application and will not be elaborated further.

[0051] like Figure 4 As shown, the drive mechanism 13 in this embodiment includes a reduction gear 131 and a lead screw drive 132. The reduction gear 131 is coaxially arranged with the output shaft of the lifting motor 18; the lead screw drive 132 is coaxially arranged with the output shaft of the reduction gear 131 and is used to drive the inner tube 111 to linearly extend and retract relative to the outer tube 112. The high-speed rotation of the motor is converted into a large torque output by the reduction gear 131, and then the inner tube 111 is linearly extended and retracted relative to the outer tube 112 by the lead screw drive 132, thereby realizing the smooth lifting and lowering of the column.

[0052] Regarding the specific selection of the reduction gear 131, it can be one of a two-stage planetary reduction gear 131, a two-stage interlaced shaft reduction gear 131, or a two-stage parallel shaft reduction gear 131. When using a two-stage interlaced shaft reduction gear 131 or a two-stage parallel shaft reduction gear 131, the motor shaft of the lifting motor 18 is parallel to the axis of the lead screw drive 132, rather than coaxially arranged. This layout effectively shortens the overall axial dimension of the column, reducing the length occupied by the drive mechanism 13 inside the inner tube 111, thereby increasing the overlap length between the inner and outer tubes 112. The increased overlap length directly improves the bending stiffness and overall stability of the column in its extended state, making it particularly suitable for large stroke or heavy load scenarios. While ensuring smooth lifting, it further enhances the structural reliability of the entire table. Furthermore, it should be understood that the lead screw drive 132 in this embodiment uses existing technology, which will not be described in detail here.

[0053] See Figure 5 and Figure 6 As shown, a mounting base 151 is fixedly installed at the lower end of the operation panel 15. The mounting base 151 and the outer tube 112 are engaged by a locking assembly 153. The locking assembly 153 includes at least two guide plates 1531 and at least two latches 1532. In this embodiment, the control module is installed inside the mounting base 151, or it can be installed on the lower end surface of the mounting base 151; no specific limitation is made here.

[0054] Here, we only take the two guide plates 1531 and the two clips 1532 as examples. The two guide plates 1531 are fixedly installed on the lower end surface of the operation panel 15, located at the front and rear ends of the operation panel 15 respectively; the two clips 1532 are fixedly installed on the lower end surface of the operation panel 15, located on the left and right sides of the operation panel 15 respectively. Specifically, the guide plates 1531, clips 1532, and operation panel 15 are all made of plastic material.

[0055] When installing the operation panel 15, two guide plates 1531 are respectively set at the front and rear ends of the lower end face of the operation panel 15. During installation, they are used to engage with the inner wall of the outer tube 112, serving as pre-positioning and guiding elements. Two latches 1532 are respectively set on the left and right sides of the lower end face of the operation panel 15, achieving quick locking with the inner wall of the outer tube 112 through elastic deformation. The guide plates 1531 and latches 1532 are orthogonally distributed in space, effectively constraining the operation panel 15 in both the front-back and left-right directions, ensuring stability and alignment accuracy after installation. In this embodiment, the guide plates 1531, latches 1532, and operation panel 15 are all made of plastic. On the one hand, the elasticity of plastic allows the latches 1532 to be repeatedly disassembled and reassembled, enabling tool-free fixing during installation and significantly improving assembly efficiency. On the other hand, the low coefficient of friction of plastic makes it less prone to scratching or jamming during the insertion of the guide plates 1531.

[0056] like Figure 5 and Figure 6 As shown, the mounting base 151 in this embodiment has a first connection port 1511 for connecting the drive motor 18 and a second connection port 1512 for connecting the power module 19. Figure 6 As shown, the operation panel 15 in this embodiment is equipped with a power switch, an up button, and a down button. It also includes a charging / discharging interface 152, which is electrically connected to the power module 19 via the control module, and is used to charge the power module 19 or supply power to external devices.

[0057] During use, the user starts the system via the power switch on the control panel 15. After pressing the up or down button, the control module receives the corresponding signal and drives the lifting motor 18 to adjust the desktop height. Simultaneously, the charging / discharging interface 152 on the control panel 15 is electrically connected to the control module and power module 19. When an external charger is connected, current flows through the control module's management circuit to charge the power module 19. When the user needs to power external devices such as mobile phones or laptops, the charging / discharging interface 152 can output power in reverse, eliminating the need for additional sockets. This makes the control of the height-adjustable desk more intuitive and convenient, concentrating all functions within easy reach on the desktop and avoiding the cluttered cables caused by separate hand controllers and charging ports in traditional solutions. Furthermore, the integration of the charging / discharging interface 152 transforms the height-adjustable desk into a portable power supply platform, allowing direct charging of mobile devices in office or home settings, further enhancing the user experience.

[0058] In this embodiment, the power module 19 adopts a battery pack form, specifically a polymer lithium battery pack. Due to the high energy density and customizable shape of polymer lithium batteries, they can be designed in a unique shape according to the cross-sectional dimensions of the outer tube 112, allowing the battery pack to be compactly installed within the limited space inside the outer tube 112 without occupying additional space under the desktop or in the external mounting area. The battery pack's voltage range is set to 12V–36V, ensuring the power output requirements of the lifting motor 18 during operation. In actual use, the polymer lithium battery pack is directly integrated into the mounting cavity 16 at the top of the outer tube 112. The battery pack automatically charges when connected to an external power source via the control module's charge / discharge management circuit, and serves as an independent power source for the entire table when no external power is available. This eliminates the dependence on a mains power outlet, allowing the height-adjustable desk to be adjusted from any position.

[0059] It should be further noted that the operation panel 15 or control module in this embodiment is equipped with a Bluetooth module or a 2.4G module. By setting a Bluetooth module or a 2.4G module on the operation panel or control module, real-time communication between multiple lifting columns can be achieved. After the Bluetooth modules or 2.4G modules on multiple lifting columns are paired, the synchronous lifting of multiple lifting columns can be realized.

[0060] In a preferred embodiment, the operation panel 15 in this embodiment is provided with an overheat protection device and an overcurrent protection device. The overheat protection device and the overcurrent protection device protect the battery pack during charging and discharging, and prevent the battery pack from overheating and catching fire due to over-discharging.

[0061] like Figures 8 to 10As shown, based on the aforementioned lifting column 1, this embodiment provides an electric height-adjustable desk, including a tabletop 2, a table frame 3, at least one of the aforementioned lifting columns 1 mounted on the table frame 3, and a support foot plate 5 mounted on the lower end face of the lifting column. The tabletop 2 is provided with a clearance groove 3 for the extension of the operation panel 15.

[0062] In a preferred embodiment, two lifting columns 1 are provided, located at both ends of the table frame 3. It should be understood that the electric height-adjustable table can have a single lifting column 1, two lifting columns 1, three lifting columns 1, or more lifting columns 1; this example only uses two lifting columns 1. In this embodiment, the two lifting columns 1 are arranged symmetrically to ensure more balanced force during lifting. The two lifting columns 1 extend and retract synchronously under the drive of the control module and the Bluetooth module or 2.4G module, effectively avoiding the uneven load or swaying that may occur with a single lifting column 1, ensuring the stability of the tabletop 2 during lifting. The user only needs to fix the two lifting columns 1 to the table frame 3 and embed the two operation panels 15 into the corresponding clearance slots 3 on the tabletop 2 to complete the installation. The entire process requires no additional wiring, truly achieving plug-and-play functionality.

[0063] In this embodiment, the pipe assembly is fixedly connected to the table frame via a fixing plate. The fixing plate is provided with several threaded holes. In actual installation, the fixing plate is welded to the pipe assembly 11, and the fixing plate is fastened to the table frame 2 by screws passing through the threaded holes. This installation method is simple and reliable.

[0064] It should be understood that the specific embodiments described above are for illustrative purposes only and are not intended to limit the scope of the invention. Obvious variations or modifications derived from the spirit of the invention are still within the protection scope of the invention.

Claims

1. A lifting column, characterized in that, include: Nested pipe assembly (11), drive mechanism (13) installed in the pipe assembly (11), baffle plate (14) disposed inside the pipe assembly (11), and operation panel (15) installed on the top of the pipe assembly (11); the baffle plate (14) is located at the upper end of the pipe assembly (11); the baffle plate (14), pipe assembly (11), and operation panel (15) enclose a mounting cavity (16); The mounting cavity (16) is equipped with a control module and a power module (19); a lifting motor (18) is installed on the lower end face of the partition plate (14); the operation panel (15), the lifting motor (18) and the power module (19) are all electrically connected to the control module; the output shaft of the lifting motor (18) is connected to the drive mechanism (13) for transmission.

2. A lifting column according to claim 1, characterized in that, The tube assembly (11) includes at least an inner tube (111) and an outer tube (112) nested together; the drive mechanism (13) is used to drive the inner tube (111) and the outer tube (112) to extend and retract linearly relative to each other; The baffle (14) is disposed inside the outer tube (112), and the operation panel (15) is installed on the top of the outer tube (112).

3. A lifting column according to claim 2, characterized in that, The drive mechanism (13) includes: Speed ​​reduction device (131); The lead screw drive device (132) is coaxially arranged with the output shaft of the reduction device (131) and is used to drive the inner tube (111) to extend and retract linearly relative to the outer tube (112).

4. A lifting column according to claim 3, characterized in that, The reduction device (131) is one of a two-stage planetary reduction device (131), a two-stage interlaced shaft reduction device (131), or a two-stage parallel shaft reduction device (131).

5. A lifting column according to claim 2, characterized in that: The lower part of the operation panel (15) is provided with a mounting base (151); The mounting base (151) and the outer tube (112) are engaged by a snap-fit ​​assembly (153).

6. A lifting column according to claim 5, characterized in that, The engagement assembly (153) includes: At least two guide plates (1531) are fixedly disposed on the lower end surface of the operation panel (15), respectively located at the front and rear ends of the operation panel (15); At least two clips (1532) are fixedly disposed on the lower end surface of the operation panel (15), respectively located on the left and right sides of the operation panel (15); The guide plate (1531), buckle (1532) and operation panel (15) are all made of plastic.

7. A lifting column according to claim 5, characterized in that, The operation panel (15) or control module is equipped with a Bluetooth module or a 2.4G module.

8. A lifting column according to claim 1, characterized in that: The operation panel (15) is also provided with a charging and discharging interface (152); the charging and discharging interface (152) is electrically connected to the power module (19) through the control module, and is used to charge the power module (19) or supply power to the outside.

9. A lifting column according to claim 1, characterized in that: The power module (19) uses a battery pack, which is a polymer lithium battery pack.

10. A lifting column according to claim 9, characterized in that: The voltage of the battery pack is 12V to 36V.

11. An electric height-adjustable desk, characterized in that, Includes a tabletop (2), a table frame (3), at least one lifting column (1) as described in any one of claims 1-10 mounted on the table frame (3), and a support foot plate mounted on the lower end face of the lifting column; The tabletop (2) is provided with a clearance groove (3) extending from the operation panel (15).

Images