Lifting table and chair component with dual drive and high load-bearing synchronous adjustment

Abstract

The present invention discloses a lifting table and chair component with dual-drive and high-load synchronous adjustment, including a connection groove provided at the lower end of the tabletop. A second support frame is provided below the tabletop, and a first support frame is provided below each of the two second support frames; a hydraulic cylinder provided inside the lifting cavity; a drive groove provided on the outer wall of the second support frame, with a toothed row provided inside the drive groove, a second groove provided on the inner wall of the lifting cavity, a mounting bracket provided inside the second groove, a gear provided on the mounting bracket, and a reversing wrench provided on one side of the first support frame. The support structure of this lifting table and chair component combines electric drive and manual drive methods. When the electric drive fails, the manual drive method can be used to ensure the normal lifting function of the table and chair component, enabling the lifting table and chair component to perform dual-drive lifting and improving the use effect of the lifting table and chair component.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting tables, and specifically to a lifting table and chair component with dual-drive, high load-bearing, and synchronous adjustment. Background Art

[0002] Tables and chairs are commonly used furniture for home and teaching. Traditional tables and chairs have a fixed height. A lifting table and chair component refers to a table and chair that can be adjusted in height, which plays the role of adjusting the height of the table and chair component to meet the usage requirements of the table and chair component. The height adjustment is achieved by fixing bolts in fixed holes at different heights.

[0003] Chinese Patent Publication No. CN215685661U, with an authorization announcement date of February 01, 2022, discloses a dual-drive synchronous lifting electric heating table, which relates to the technical field of household appliances. It includes a table body, outer columns, a bottom plate, a base, and a middle-layer footrest. Outer columns are provided at the bottoms of the four corners of the table body. The bottom plate is located inside the bottoms of the outer columns. Bases are provided at the bottoms of the outer columns. A middle-layer footrest is provided below the bottom of the table body. A first synchronous lifting component and a second synchronous lifting component are provided in the cavity formed by the outer columns, the bottom plate, and the base. It enables the table body to adjust the height through the first synchronous lifting component, and at the same time enables the middle-layer footrest to adjust the height through the second synchronous lifting component, so as to be able to adjust the size of the footrest space, be suitable for people with different leg lengths, and avoid adding guide rails and columns during installation. The connection seat is used for sliding and guiding connection with the table legs, reducing the occupied space and improving the space utilization rate.

[0004] The existing lifting table and chair components are provided with at least two support structures. The lifting mechanism of the support structure adopts a lifting method with a single electric drive structure. When the electric drive fails during use, the lifting function cannot be completed. The lifting amounts of the support structures are different, which does not meet the synchronous adjustment function and cannot meet the usage requirements. Summary of the Invention

[0005] The purpose of the present invention is to provide a lifting table and chair component with dual-drive, high load-bearing, and synchronous adjustment, so as to solve the problems mentioned in the above background art that the existing lifting table and chair components are provided with at least two support structures, the lifting mechanism of the support structure adopts a lifting method with a single electric drive structure, when the electric drive fails during use, the lifting function cannot be completed, the lifting amounts of the support structures are different, which does not meet the synchronous adjustment function and cannot meet the usage requirements.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A lifting table and chair component with dual-drive, high load-bearing, and synchronous adjustment, including a table top,

[0007] Connecting grooves are provided at the lower end of the tabletop. There are two connecting grooves, and the two connecting grooves are arranged at both ends of the tabletop. A second support frame is provided below the tabletop. There are two second support frames, and the second support frames are connected to the tabletop by screws. A first support frame is provided below each of the two second support frames. A lifting cavity is arranged inside the first support frame, and one end of the second support frame extends into the lifting cavity. The second support frame is movably connected to the first support frame;

[0008] A hydraulic cylinder is arranged inside the lifting cavity, and the hydraulic cylinder is fixedly connected to the first support frame. A support plate is arranged at the upper end of the hydraulic cylinder, and the support plate is fixedly connected to the hydraulic cylinder. The support plate is in contact with the lower end of the second support frame;

[0009] A drive groove is arranged on the outer wall of the second support frame. A tooth row is arranged inside the drive groove. There are two tooth rows, and the tooth rows are fixedly connected to the second support frame. A second groove is arranged on the inner wall of the lifting cavity. An installation frame is arranged inside the second groove. A gear is arranged on the installation frame. There are two gears, and the gears are rotatably connected to the installation frame. The two gears are meshed with each other, and the gears are meshed with the tooth rows. A reversing wrench is arranged on one side of the first support frame, and the reversing wrench is rotatably connected to the first support frame. The reversing wrench is integrally connected to one end of the gear.

[0010] Preferably, displacement sensors are arranged on the inner sides of the two second support frames, and the displacement sensors are fixedly connected to the second support frames. An electric control component is arranged below the tabletop, and the electric control component is connected to the tabletop by screws.

[0011] Preferably, a first adjusting bolt is arranged on the inner side of the first support frame, and the first adjusting bolt is threadedly connected to the first support frame. One end of the first adjusting bolt is rotatably connected to the installation frame.

[0012] Preferably, a second locking bolt is arranged at one end of the reversing wrench, and the second locking bolt is threadedly connected to the reversing wrench.

[0013] Preferably, reinforcing bars are arranged at the lower end of the tabletop. There are two reinforcing bars, and the reinforcing bars are fixedly connected to the tabletop. The two reinforcing bars are arranged in a cross shape.

[0014] Preferably, a level gauge is arranged at the front end of the tabletop, and the level gauge is fixedly connected to the tabletop.

[0015] Preferably, first grooves are provided on the inner wall of the lifting cavity. There are two first grooves, and the two first grooves are arranged on both sides of the second support frame. Limit plates are arranged inside both of the two first grooves, and the limit plates are movably connected to the first support frame. First locking bolts are arranged on both sides of the first support frame, and the first locking bolts are threadedly connected to the first support frame. One end of the first locking bolt is rotatably connected to the limit plate.

[0016] Preferably, rolling grooves are provided on the inner wall of the lifting cavity. There are two rolling grooves. Ball bearings are arranged on both sides of the lower end of the second support frame, and the ball bearings are rotatably connected to the second support frame. One end of the ball bearing extends into the rolling groove, and the ball bearing is slidably connected to the first support frame.

[0017] Preferably, a rubber ring is provided at the upper end of the lifting cavity, and the rubber ring is integrally connected to the first support frame. The rubber ring is arranged outside the second support frame, and the rubber ring is slidably connected to the second support frame.

[0018] Preferably, an anti-slip seat is provided below the first support frame, and the anti-slip seat is integrally connected to the first support frame.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. Through the settings of the displacement sensor, hydraulic cylinder, first locking bolt and limit plate in the device of the invention, the hydraulic cylinder drives the second support frame to lift in the lifting cavity. The displacement sensor measures and compares the lifting displacement of the two second support frames, and adjusts the hydraulic cylinder appropriately according to the displacement to achieve synchronous lifting adjustment. Rotating the first locking bolt drives the limit plate to be in close contact with the second support frame, and the limit plate plays a role in limiting the second support frame, improving the stability of the support structure and enabling it to bear a greater load capacity;

[0021] 2. Through the settings of the first adjusting bolt, tooth row, gear and reversing wrench in the device of the invention, rotating the first adjusting bolt moves the mounting rack, inserts the gear into the driving groove to connect with the tooth row, drives one gear to rotate by means of the reversing wrench, and then drives the other gear to rotate in the opposite direction. The rotating reversing wrench drives the second support frame to lift, realizing manual lifting adjustment;

[0022] 3. Through the setting of the second locking bolt in the device of the invention, rotating the second locking bolt makes one end of it in close contact with the first support frame, which can play a role in limiting the reversing wrench, prevent the gear from being forced to rotate, and improve the stability of the lifting table and chair;

[0023] 4. Through the setting of the reinforcing strip in the device of the invention, the reinforcing strip increases the structural strength of the table top and improves the load-bearing capacity of the table top. Description of the Drawings

[0024] Figure 1 Schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Bottom view of the tabletop of the present invention;

[0026] Figure 3 Connection relationship diagram of the second support frame and the first support frame of the present invention;

[0027] Figure 4 For the present invention Figure 3 Local enlarged view of area A;

[0028] Figure 5 Connection relationship diagram of the limit plate and the second support frame of the present invention;

[0029] Figure 6 Connection cross-sectional view of the gear and the second support frame of the present invention;

[0030] Figure 7 Connection relationship diagram of the gear and the second support frame of the present invention;

[0031] Figure 8 Connection relationship diagram of the reversing wrench and the gear of the present invention.

[0032] In the figure: 1, tabletop; 2, first support frame; 3, second support frame; 4, anti-slip seat; 5, displacement sensor; 6, first locking bolt; 7, first adjusting bolt; 8, reversing wrench; 9, second locking bolt; 10, electronic control component; 11, connection groove; 12, reinforcing strip; 13, lifting cavity; 14, hydraulic cylinder; 15, rubber ring; 16, support plate; 17, ball; 18, rolling groove; 19, first groove; 20, limit plate; 21, driving groove; 22, tooth row; 23, mounting bracket; 24, gear; 25, second groove; 26, level gauge. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0034] Please refer to Figure 1-8 , an embodiment provided by the present invention: a lifting table and chair component with dual-drive and high-load synchronous adjustment, including a tabletop 1,

[0035] The connecting groove 11 is provided at the lower end of the tabletop 1. There are two connecting grooves 11, and the two connecting grooves 11 are provided at both ends of the tabletop 1. A second support frame 3 is provided below the tabletop 1. There are two second support frames 3, and the second support frame 3 is connected to the tabletop 1 by screws. A first support frame 2 is provided below both of the two second support frames 3. A lifting cavity 13 is provided inside the first support frame 2, and one end of the second support frame 3 extends into the interior of the lifting cavity 13. The second support frame 3 is movably connected to the first support frame 2;

[0036] The hydraulic cylinder 14 is provided inside the lifting cavity 13, and the hydraulic cylinder 14 is fixedly connected to the first support frame 2. A support plate 16 is provided at the upper end of the hydraulic cylinder 14, and the support plate 16 is fixedly connected to the hydraulic cylinder 14. The support plate 16 is in contact with the lower end of the second support frame 3;

[0037] The driving groove 21 is provided on the outer wall of the second support frame 3. A tooth row 22 is provided inside the driving groove 21. There are two tooth rows 22, and the tooth row 22 is fixedly connected to the second support frame 3. A second groove 25 is provided on the inner wall of the lifting cavity 13. An installation frame 23 is provided inside the second groove 25. A gear 24 is provided on the installation frame 23. There are two gears 24, and the gear 24 is rotatably connected to the installation frame 23. The two gears 24 are meshed, and the gear 24 is meshed with the tooth row 22. A reversing wrench 8 is provided on one side of the first support frame 2, and the reversing wrench 8 is rotatably connected to the first support frame 2. The reversing wrench 8 is integrally connected to one end of the gear 24.

[0038] During use: Insert the upper end of the second support frame 3 into the connecting groove 11 to connect with the tabletop 1, drive the hydraulic cylinder 14 to drive the second support frame 3 to lift and lower, and realize the lifting function of the table and chair components as the second support frame 3 lifts and lowers; Insert the gear 24 into the driving groove 21 to connect with the tooth row 22, drive one gear 24 to rotate by means of the reversing wrench 8, the rotating gear 24 drives the other gear 24 to rotate in the opposite direction, and drive the second support frame 3 to lift and lower as the gear 24 rotates, and the lifting function of the table and chair components can also be realized, so that the lifting table and chair components have a dual-drive function.

[0039] Please refer to Figure 1 and Figure 2 , displacement sensors 5 are provided on the inner sides of both of the two second support frames 3, and the displacement sensors 5 are fixedly connected to the second support frames 3. An electric control component 10 is provided below the tabletop 1, and the electric control component 10 is connected to the tabletop 1 by screws. The lifting displacement of the two second support frames 3 can be measured and compared by the displacement sensors 5, and the hydraulic cylinder 14 is correspondingly changed according to the displacement amount to realize synchronous lifting adjustment.

[0040] Please refer to Figure 1 and Figure 6, a first adjusting bolt 7 is provided inside the first support frame 2, and the first adjusting bolt 7 is threadedly connected to the first support frame 2. One end of the first adjusting bolt 7 is rotatably connected to the mounting frame 23. By rotating the first adjusting bolt 7 to drive the mounting frame 23 to move, the connection state between the gear 24 and the tooth row 22 can be changed, facilitating the lifting adjustment by means of manual drive.

[0041] Please refer to Figure 1 and Figure 8 , a second locking bolt 9 is provided at one end of the reversing wrench 8, and the second locking bolt 9 is threadedly connected to the reversing wrench 8. By rotating the second locking bolt 9 so that one end thereof is in close contact with the first support frame 2, the reversing wrench 8 can be limited, preventing the gear 24 from rotating under force.

[0042] Please refer to Figure 2 , reinforcing bars 12 are provided at the lower end of the tabletop 1. There are two reinforcing bars 12, and the reinforcing bars 12 are fixedly connected to the tabletop 1. The two reinforcing bars 12 are cross - arranged. By means of the reinforcing bars 12, the structural strength of the tabletop 1 is increased, and the bearing capacity is greatly increased.

[0043] Please refer to Figure 1 , a level 26 is provided at the front end of the tabletop 1, and the level 26 is fixedly connected to the tabletop 1. By means of the level 26, the levelness of the table and chair can be measured, assisting the synchronous lifting adjustment of the table and chair.

[0044] Please refer to Figure 1 and Figure 5 , first grooves 19 are provided on the inner wall of the lifting cavity 13. There are two first grooves 19, and the two first grooves 19 are arranged on both sides of the second support frame 3. Limit plates 20 are provided inside both of the two first grooves 19, and the limit plates 20 are movably connected to the first support frame 2. First locking bolts 6 are provided on both sides of the first support frame 2, and the first locking bolts 6 are threadedly connected to the first support frame 2. One end of the first locking bolt 6 is rotatably connected to the limit plate 20. By rotating to drive the limit plate 20 to move and making the limit plate 20 in close contact with the second support frame 3, the second support frame 3 can be clamped and limited, ensuring the stability of the support structure and enabling it to bear a greater bearing capacity.

[0045] Please refer to Figure 3 and Figure 4 , rolling grooves 18 are provided on the inner wall of the lifting cavity 13. There are two rolling grooves 18. Ball bearings 17 are provided on both sides at the lower end of the second support frame 3, and the ball bearings 17 are rotatably connected to the second support frame 3. One end of the ball bearing 17 extends into the rolling groove 18, and the ball bearing 17 is slidably connected to the first support frame 2. By the ball bearing 17 rolling along the rolling groove 18 as the second support frame 3 rises and falls, it can not only guide and limit the rising and falling second support frame 3, but also reduce the lifting resistance and improve the lifting stability of the second support frame 3.

[0046] Please refer to Figure 3 and Figure 4 As shown in Figure 3 and Figure 4 , a rubber ring 15 is provided at the upper end of the lifting cavity 13. The rubber ring 15 is integrally connected to the first support frame 2. The rubber ring 15 is disposed outside the second support frame 3 and is slidably connected to the second support frame 3. The gap between the second support frame 3 and the first support frame 2 is filled by the rubber ring 15, which can prevent dust from entering the lifting cavity 13.

[0047] Please refer to Figure 1 and Figure 3 As shown in Figure 1 and Figure 3 , an anti-slip seat 4 is provided below the first support frame 2. The anti-slip seat 4 is integrally connected to the first support frame 2, which increases the fixing stability of the table and chair.

[0048] Working principle: Rotate the first locking bolt 6 to separate the limiting plate 20 from the second support frame 3. Drive the hydraulic cylinder 14 to drive the second support frame 3 to lift and lower. With the lifting and lowering of the second support frame 3, the lifting and lowering function of the table and chair components is realized. The displacement sensor 5 measures and compares the lifting displacement of the two second support frames 3, and correspondingly changes the hydraulic cylinder 14 according to the displacement amount to achieve synchronous lifting adjustment; Rotate the first adjusting bolt 7 to drive the mounting frame 23 to move. The mounting frame 23 is inserted into the driving groove 21. The gear 24 is meshed with the tooth row 22. Loosen the second locking bolt 9 and rotate the reversing wrench 8. With the help of the reversing wrench 8, drive one gear 24 to rotate. The rotating gear 24 drives the other gear 24 to rotate in the opposite direction. With the rotation of the gear 24, the second support frame 3 is driven to lift and lower, and the lifting and lowering function of the table and chair components can also be realized, so that the lifting table and chair components have a dual-drive function. Rotate the first locking bolt 6 to make the limiting plate 20 in close contact with the second support frame 3, improve the stability of the support structure, and can bear a greater load.

[0049] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0050] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting table and chair component with dual-drive and high-load synchronous adjustment, including a tabletop (1), characterized in that: Connecting grooves (11) are provided at the lower end of the tabletop (1). There are two connecting grooves (11), and the two connecting grooves (11) are arranged at both ends of the tabletop (1). A second support frame (3) is provided below the tabletop (1). There are two second support frames (3), and the second support frames (3) are connected to the tabletop (1) by screws. A first support frame (2) is provided below each of the two second support frames (3). A lifting cavity (13) is arranged inside the first support frame (2), and one end of the second support frame (3) extends into the lifting cavity (13). The second support frame (3) is movably connected to the first support frame (2); A hydraulic cylinder (14) is arranged inside the lifting cavity (13), and the hydraulic cylinder (14) is fixedly connected to the first support frame (2). A support plate (16) is arranged at the upper end of the hydraulic cylinder (14), and the support plate (16) is fixedly connected to the hydraulic cylinder (14). The support plate (16) is in contact with the lower end of the second support frame (3); A drive groove (21) is arranged on the outer wall of the second support frame (3). A toothed row (22) is arranged inside the drive groove (21). There are two toothed rows (22), and the toothed rows (22) are fixedly connected to the second support frame (3). A second groove (25) is arranged on the inner wall of the lifting cavity (13). A mounting frame (23) is arranged inside the second groove (25). Two gears (24) are arranged on the mounting frame (23), and the gears (24) are rotatably connected to the mounting frame (23). The two gears (24) are meshed with each other, and the gears (24) are meshed with the toothed rows (22). A reversing wrench (8) is arranged on one side of the first support frame (2), and the reversing wrench (8) is rotatably connected to the first support frame (2). The reversing wrench (8) is integrally connected to one end of the gear (24); Displacement sensors (5) are arranged on the inner sides of the two second support frames (3), and the displacement sensors (5) are fixedly connected to the second support frames (3). An electric control component (10) is arranged below the tabletop (1), and the electric control component (10) is connected to the tabletop (1) by screws; A first adjusting bolt (7) is arranged on the inner side of the first support frame (2), and the first adjusting bolt (7) is threadedly connected to the first support frame (2). One end of the first adjusting bolt (7) is rotatably connected to the mounting frame (23); A second locking bolt (9) is arranged at one end of the reversing wrench (8), and the second locking bolt (9) is threadedly connected to the reversing wrench (8); Reinforcing bars (12) are arranged at the lower end of the tabletop (1). There are two reinforcing bars (12), and the reinforcing bars (12) are fixedly connected to the tabletop (1). The two reinforcing bars (12) are arranged crosswise.

2. The lifting table and chair component with dual-drive and high-load synchronous adjustment according to claim 1, characterized in that: A level gauge (26) is arranged at the front end of the tabletop (1), and the level gauge (26) is fixedly connected to the tabletop (1).

3. The lifting table and chair component with dual-drive and high-load synchronous adjustment according to claim 1, characterized in that: On the inner wall of the lifting cavity (13), there are two first grooves (19) provided. The two first grooves (19) are arranged on both sides of the second support frame (3). Inside both of the two first grooves (19), there are limit plates (20) provided, and the limit plates (20) are movably connected to the first support frame (2). On both sides of the first support frame (2), there are first locking bolts (6) provided, and the first locking bolts (6) are threadedly connected to the first support frame (2). One end of the first locking bolt (6) is rotatably connected to the limit plate (20).

4. The lifting table and chair component with dual-drive and high-load synchronous adjustment according to claim 1, characterized in that: On the inner wall of the lifting cavity (13), there are two rolling grooves (18) provided. On both sides of the lower end of the second support frame (3), there are balls (17) provided, and the balls (17) are rotatably connected to the second support frame (3). One end of the ball (17) extends into the rolling groove (18), and the ball (17) is slidably connected to the first support frame (2).

5. The lifting table and chair component with dual-drive and high-load synchronous adjustment according to claim 1, characterized in that: At the upper end of the lifting cavity (13), there is a rubber ring (15) provided, and the rubber ring (15) is integrally connected to the first support frame (2). The rubber ring (15) is arranged outside the second support frame (3), and the rubber ring (15) is slidably connected to the second support frame (3).

6. The lifting table and chair component with dual-drive and high-load synchronous adjustment according to claim 1, characterized in that: Below the first support frame (2), there is an anti-slip seat (4) provided, and the anti-slip seat (4) is integrally arranged with the first support frame (2).

Images