An electric height-adjustable desk

Abstract

This utility model relates to the field of height-adjustable desk technology, specifically an electric height-adjustable desk. It includes a tabletop, with legs on both sides of the lower end of the tabletop. Each leg includes, from top to bottom, a top sleeve, one or more intermediate sleeves, and a bottom sleeve. A top lead screw is located on one side of the top sleeve, an intermediate lead screw on one side of the intermediate sleeve, and an aluminum tube on one side of the bottom sleeve. The upper end of the top lead screw is connected to a drive assembly, and the lower end of the top lead screw is connected to the intermediate lead screw via a guide head. The lower end of the intermediate lead screw is screwed into a first nut inside the aluminum tube. Compared with existing technologies, the number of intermediate sleeves and the height of each sleeve can be determined according to the height of the electric height-adjustable desk, thereby meeting the usage needs of people of all ages.

Description

Technical Field

[0001] This utility model relates to the field of height-adjustable desks, specifically an electric height-adjustable desk. Background Technology

[0002] Electric height-adjustable desks can flexibly adjust their height to meet the needs of users who alternate between sitting and standing for work and study, and can be adapted to people of different heights. However, currently, most electric height-adjustable desks have legs that are connected in two sections, which limits the minimum height of the desk and cannot meet the needs of users of all ages. Summary of the Invention

[0003] This utility model provides an electric height-adjustable table to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, an electric height-adjustable table is designed, including a tabletop. Table legs are provided on both sides of the lower end of the tabletop. Each table leg includes a top sleeve, one or more intermediate sleeves, and a bottom sleeve, which are sequentially fitted from top to bottom. A top lead screw is provided on one side of the top sleeve, an intermediate lead screw is provided on one side of the intermediate sleeve, and an aluminum tube is provided on one side of the bottom sleeve. The upper end of the top lead screw is connected to a drive assembly, and the lower end of the top lead screw is connected to the intermediate lead screw through a guide head. The lower end of the intermediate lead screw is screwed into a first nut inside the aluminum tube.

[0005] When there is one intermediate sleeve, a limiting plate is provided at the lower end of the intermediate lead screw, and the limiting plate is stuck in the inner wall of the bottom sleeve. When there are two or more intermediate sleeves, the adjacent intermediate lead screws are connected by a guide head, and the lower end of the lowest intermediate lead screw is provided with a limiting plate, which is stuck in the inner wall of the bottom sleeve.

[0006] Fastening components are provided at the connection between the top lead screw and the middle lead screw, and at the connection between adjacent middle lead screws. The fastening components include a nut bracket, a second nut piece, a bearing, and a bearing cover. A bearing cover is fitted onto the upper end of the middle lead screw, and a bearing is provided on the bearing cover. A nut bracket is provided above the bearing, and a second nut piece is provided at the center of the nut bracket.

[0007] The drive assembly includes a motor box and a drive motor. The motor box is located at the upper end of the top sleeve and is connected to the motor box. The drive motor is fixed inside the motor box by a bearing seat. The upper end of the motor box is provided with a motor cover.

[0008] A reinforcing angle iron is provided between the drive assembly and the top sleeve, and an upper socket is provided on the reinforcing angle iron.

[0009] One of the table legs has a spring wire inside the top sleeve on the other side, and a conduit outside the spring wire. One end of the spring wire is fixed to the motor box, and the other end passes through the middle sleeve and the bottom sleeve, and is located inside the bottom sleeve.

[0010] Friction plates are provided at the joint positions of the intermediate sleeve and the bottom sleeve.

[0011] One of the table legs has a socket assembly at the bottom. The socket assembly includes a socket box and a spring wire plug. One end of the socket box has a spring wire plug, and the other end of the socket box has a connecting socket.

[0012] The table leg has several square holes on one side of its lower end, and the socket box has several locking feet that mate with the square holes at its lower end.

[0013] The tabletop has a crossbeam assembly at its lower end, which includes a connecting rod and a bracket. The brackets are distributed on both sides of the lower end of the tabletop and are connected by a connecting rod.

[0014] Compared with the prior art, this utility model can determine the number of intermediate sleeves and the height of each sleeve according to the height of the electric lifting table, thereby meeting the usage needs of people of all ages. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0016] Figure 2 This is a structural schematic diagram from another perspective of Embodiment 1 of this utility model.

[0017] Figure 3 This is a schematic diagram of the table leg structure in Embodiment 1 of this utility model.

[0018] Figure 4 This is a structural schematic diagram of the table leg from another perspective in Embodiment 1 of this utility model.

[0019] Figure 5 This is a schematic diagram of the bottom sleeve in Embodiment 1 of this utility model.

[0020] Figure 6 This is a structural schematic diagram of the bottom sleeve from another perspective in Embodiment 1 of this utility model.

[0021] Figure 7 This is an exploded view of the bottom sleeve in Embodiment 1 of this utility model.

[0022] Figure 8 This is an exploded view of the aluminum tube in Embodiment 1 of this utility model.

[0023] Figure 9 This is a schematic diagram of the structure of the intermediate sleeve in Embodiment 1 of this utility model.

[0024] Figure 10 This is a schematic diagram of the structure of the middle sleeve and the top lead screw located at the top in Embodiment 1 of this utility model.

[0025] Figure 11This is an exploded view of the middle sleeve and the top lead screw located at the top in Embodiment 1 of this utility model.

[0026] Figure 12 This is an exploded view of the lower middle sleeve in Embodiment 1 of this utility model.

[0027] Figure 13 This is a schematic diagram of the top sleeve in Embodiment 1 of this utility model.

[0028] Figure 14 This is an exploded view of the top sleeve in Embodiment 1 of this utility model.

[0029] Figure 15 This is a schematic diagram of the internal structure of the table legs in Embodiment 1 of this utility model.

[0030] Figure 16 This is an exploded view of the interior of the table leg in Embodiment 1 of this utility model.

[0031] Figure 17 This is an exploded view of the socket assembly in Embodiment 1 of this utility model.

[0032] Figure 18 This is an exploded view of the socket assembly in Embodiment 1 of this utility model from another perspective.

[0033] Figure 19 This is a schematic diagram of the tabletop in Embodiment 1 of this utility model.

[0034] Figure 20 This is a schematic diagram of the structure of the back of the tabletop in Embodiment 1 of this utility model.

[0035] Figure 21 This is a structural schematic diagram of the crossbeam assembly in Embodiment 1 of this utility model.

[0036] Figure 22 This is a schematic diagram of the internal structure of the table legs in Embodiment 2 of this utility model.

[0037] Figure 23 This is an exploded view of the interior of the table leg in Embodiment 2 of this utility model. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings. Example 1

[0039] like Figures 1 to 21As shown, table legs 2 are provided on the left and right sides of the lower end of the tabletop 1. Each table leg 2 includes a top sleeve 2-1, one or more intermediate sleeves 2-2, and a bottom sleeve 2-3, which are sequentially fitted from top to bottom. A top lead screw 2-1-1 is provided on one side of the top sleeve 2-1, an intermediate lead screw 2-2-1 is provided on one side of the intermediate sleeve 2-2, and an aluminum tube 2-3-1 is provided on one side of the bottom sleeve 2-3. The upper end of the top lead screw 2-1-1 is connected to a drive assembly 2-5, and the lower end of the top lead screw 2-1-1 is connected to the intermediate lead screw 2-2-1 through a guide head 2-4. The lower end of the intermediate lead screw 2-2-1 is screwed into a first nut 2-3-2 inside the aluminum tube 2-3-1. In this embodiment, there are two intermediate sleeves 2-2.

[0040] When there are two or more intermediate sleeves 2-2, adjacent intermediate lead screws 2-2-1 are connected by guide heads 2-4. The lower end of the lowest intermediate lead screw 2-2-1 is provided with a limiting plate 2-12, which is locked into the inner wall of the bottom sleeve 2-3. Figures 10 to 11 As shown, the lower end of the upper intermediate lead screw 2-2-1 is connected to the lower intermediate lead screw 2-2-1 via a guide head 2-4. Figure 12 As shown, a limiting plate 2-12 is provided at the lower end of the middle lead screw 2-2-1 located below.

[0041] The lower end of the aluminum tube 2-3-1 is provided with an end cap 2-3-3, and the lower end of the bottom sleeve 2-3 is connected to the table leg 3 via a mounting plate 2-3-4. The end cap 2-3-3 is fixed on the mounting plate 2-3-4, thereby connecting the aluminum tube 2-3-1 and the bottom sleeve 2-3. The other side of the bottom sleeve 2-3 is provided with a cavity for the spring wire 2-8 to pass through.

[0042] Fastening components 4 are provided at the connection between the top lead screw 2-1-1 and the middle lead screw 2-2-1, and at the connection between adjacent middle lead screws 2-2-1. The fastening components include a nut bracket 4-1, a second nut 4-2, a bearing 4-3, and a bearing cover 4-4. The bearing cover 4-4 is fitted on the upper end of the middle lead screw 2-2-1. The bearing 4-3 is provided on the bearing cover 4-4. The nut bracket 4-1 is provided above the bearing 4-3. The second nut 4-2 is provided at the center of the nut bracket 4-1.

[0043] The drive assembly 2-5 includes a motor housing 2-5-1 and a drive motor 2-5-2. The drive motor 2-5-2 is located on the upper end of the top sleeve 2-1 and connected to the motor housing 2-5-1. The drive motor 2-5-2 is fixed inside the motor housing 2-5-1 by a bearing seat 2-5-3. A motor cover 2-5-4 is provided on the upper end of the motor housing 2-5-1. A hexagonal hole 2-5-5 is provided on one side of the drive motor 2-5-2. A hexagonal connector 2-5-6 is provided inside the hexagonal hole 2-5-5. The hexagonal connector 2-5-6 is connected to the top lead screw 2-1-1.

[0044] A reinforcing angle iron 2-6 is provided between the drive assembly 2-5 and the top sleeve 2-1. The reinforcing angle iron 2-6 is provided with an upper socket 2-7 for easy connection to an external power source.

[0045] In this embodiment, a spring wire 2-8 is provided on the other side of the top sleeve 2-1 located on the left table leg 2, and a wire tube 2-13 is provided on the outside of the spring wire 2-8. One end of the spring wire 2-8 is fixed to the motor box 2-5-1, and the other end of the spring wire 2-8 passes through the middle sleeve 2-2 and the bottom sleeve 2-3, and is located inside the bottom sleeve 2-3.

[0046] Friction plates 2-9 are provided at the joint positions of the intermediate sleeve 2-2 and the bottom sleeve 2-3. There are friction plates 2-9 between each sleeve section to ensure a reasonable gap between the pipes and to prevent the table from shaking.

[0047] In this embodiment, a socket assembly 2-10 is provided on the lower end of the left table leg 2. The socket assembly 2-10 includes a socket box 2-10-1 and a spring wire plug 2-10-2. One end of the socket box 2-10-1 has the spring wire plug 2-10-2, and one side of the spring wire plug 2-10-2 has a connecting socket 2-10-3. The other end of the socket box 2-10-1 has another socket 2-10-4. The spring wire plug 2-10-2 is inserted into the connecting socket 2-10-3, and the connecting socket 2-10-3 is connected to the other socket 2-10-4. The other socket 2-10-4 is a socket with a short circuit breaker. In this embodiment, the external power cord plug is inserted into the other socket 2-10-4 of the socket assembly 2-10, and connected to the upper socket 2-7 and the controller 1-2 via the spring wire 2-8. The controller 1-2 is fixed to one side of the tabletop 1.

[0048] The lower end of table leg 2 is connected to table foot 3. Several square holes 2-11 are provided on one side of the lower end of table leg 2 or on table foot 3. Several locking feet 2-10-5 that mate with the square holes 2-11 are provided at the lower end of socket box 2-10-1. Socket box 2-10-1 is fixed by a locking structure.

[0049] The tabletop 1 has a crossbeam assembly 5 at its lower end. The crossbeam assembly 5 includes a connecting rod 5-1 and a bracket 5-2. The brackets 5-2 are distributed on both sides of the lower end of the tabletop 1, and the brackets 5-2 on both sides are connected by the connecting rod 5-1. The brackets 5-2 are telescopic brackets. In actual use, the telescopic brackets are easy to adjust in length and are suitable for tabletops of different lengths.

[0050] One end of the tabletop 1 is equipped with a hand controller 1-1 that works with the drive assembly 2-5. When the hand controller 1-1 on the tabletop 1 is activated, the drive motor 2-5-2 will rotate, which will drive the top lead screw 2-1-1 and the middle lead screw 2-2-1 to rotate, thereby raising and lowering the electric table.

[0051] In this embodiment, the upper end of the top lead screw 2-1-1 is fitted into the bearing seat 2-5-3, the hexagonal connector 2-5-6 extends into the hexagonal hole 2-5-5 of the motor, the guide head 2-4 at the lower end of the top lead screw 2-1-1 extends into the inner spline hole of the upper middle lead screw 2-2-1, the guide head 2-4 at the lower end of the upper middle lead screw 2-2-1 extends into the inner spline hole of the lower middle lead screw 2-2-1, and the lower middle lead screw 2-2-1 is screwed into the first nut 2-3-2 on the aluminum tube 2-3-1. The limiting device of the lower middle lead screw 2-2-1 is locked in the inner wall of the aluminum tube 2-3-1 to ensure the stability of the lead screw during rotation.

[0052] In this embodiment, the diameter of the lead screws increases sequentially from top to bottom, forming a multi-stage lead screw system. This ensures that the lead screw at the top can enter the inner spline hole of the lead screw below, reducing the height. Furthermore, through the action of the guide head, the top lead screw 2-1-1 can drive the other lead screws to rotate, thereby completing the lifting and lowering function. Example 2

[0053] This embodiment only describes the differences from Embodiment 1; the similarities will not be repeated.

[0054] The difference between this embodiment and Embodiment 1 is that, as Figures 22 to 23 As shown, in this embodiment, there is one intermediate sleeve 2-2, and a limiting plate 2-12 is provided at the lower end of the intermediate lead screw 2-2-1. The limiting plate 2-12 is stuck in the inner wall of the bottom sleeve 2-3.

Claims

1. An electric height-adjustable desk, comprising a tabletop, characterized in that: The tabletop (1) is provided with table legs (2) on both sides of the lower end. The table legs (2) include a top sleeve (2-1), one or more intermediate sleeves (2-2), and a bottom sleeve (2-3) arranged from top to bottom. A top screw rod (2-1-1) is provided on one side inside the top sleeve (2-1), an intermediate screw rod (2-2-1) is provided on one side inside the intermediate sleeve (2-2), and an aluminum tube (2-3-1) is provided on one side inside the bottom sleeve (2-3). The upper end of the top screw rod (2-1-1) is connected to the drive assembly (2-5), and the lower end of the top screw rod (2-1-1) is connected to the intermediate screw rod (2-2-1) through the guide head (2-4). The lower end of the intermediate screw rod (2-2-1) is screwed into the first nut (2-3-2) inside the aluminum tube (2-3-1).

2. The electric height-adjustable desk according to claim 1, characterized in that: When there is one intermediate sleeve (2-2), the lower end of the intermediate lead screw (2-2-1) is provided with a limiting plate (2-12), which is locked in the inner wall of the bottom sleeve (2-3). When there are two or more intermediate sleeves (2-2), the adjacent intermediate lead screws (2-2-1) are connected by a guide head (2-4). The lower end of the lowest intermediate lead screw (2-2-1) is provided with a limiting plate (2-12), which is locked in the inner wall of the bottom sleeve (2-3).

3. The electric height-adjustable desk according to claim 1, characterized in that: Fastening components (4) are provided at the connection between the top lead screw (2-1-1) and the middle lead screw (2-2-1) and at the connection between adjacent middle lead screws (2-2-1). The fastening components include a nut bracket (4-1), a second nut (4-2), a bearing (4-3), and a bearing cap (4-4). The bearing cap (4-4) is fitted on the upper end of the middle lead screw (2-2-1), and the bearing (4-3) is provided on the bearing cap (4-4). The nut bracket (4-1) is provided above the bearing (4-3), and the second nut (4-2) is provided at the center of the nut bracket (4-1).

4. The electric height-adjustable desk according to claim 1, characterized in that: The drive assembly (2-5) includes a motor box (2-5-1) and a drive motor (2-5-2). The motor box (2-5-1) is located at the upper end of the top sleeve (2-1) and connected to the motor box (2-5-1). The drive motor (2-5-2) is fixed inside the motor box (2-5-1) by a bearing seat (2-5-3). The upper end of the motor box (2-5-1) is provided with a motor cover (2-5-4).

5. An electric height-adjustable desk according to claim 3, characterized in that: A reinforcing angle iron (2-6) is provided between the drive assembly (2-5) and the top sleeve (2-1), and an upper socket (2-7) is provided on the reinforcing angle iron (2-6).

6. The electric height-adjustable desk according to claim 1, characterized in that: One side of the table leg (2) has a spring wire (2-8) inside the top sleeve (2-1) on the other side. The outside of the spring wire (2-8) is a wire tube (2-13). One end of the spring wire (2-8) is fixed on the motor box (2-5-1), and the other end of the spring wire (2-8) passes through the middle sleeve (2-2) and the bottom sleeve (2-3) and is located inside the bottom sleeve (2-3).

7. An electric height-adjustable desk according to claim 1, characterized in that: Friction plates (2-9) are provided at the joint positions of the intermediate sleeve (2-2) and the bottom sleeve (2-3).

8. The electric height-adjustable desk according to claim 1, characterized in that: One of the table legs (2) has a socket assembly (2-10) at the lower end. The socket assembly (2-10) includes a socket box (2-10-1) and a spring wire plug (2-10-2). The spring wire plug (2-10-2) is located at one end of the socket box (2-10-1). A connecting socket (2-10-3) is located on one side of the spring wire plug (2-10-2). Another socket (2-10-4) is located at the other end of the socket box (2-10-1).

9. An electric height-adjustable desk according to claim 8, characterized in that: The table leg (2) has several square holes (2-11) on one side of its lower end, and the socket box (2-10-1) has several locking feet (2-10-5) at its lower end that cooperate with the square holes (2-11).

10. An electric height-adjustable desk according to claim 1, characterized in that: The tabletop (1) is provided with a crossbeam assembly (5) at the lower end. The crossbeam assembly (5) includes a connecting rod (5-1) and a bracket (5-2). The brackets (5-2) are distributed on both sides of the lower end of the tabletop (1), and the brackets (5-2) on both sides are connected by the connecting rod (5-1).

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