A table leg synchronous lifting mechanism and a table

Abstract

This utility model provides a synchronized lifting mechanism for table legs and a table, belonging to the field of desk technology. It solves the problem of inconvenient operation of existing synchronized lifting mechanisms for double table legs. This synchronized lifting mechanism includes two outer table legs located on the same side of the tabletop, an inner table leg slidably inserted into the upper end of the outer table legs, and a lifting lever hinged in the middle of the inner table leg. Multiple adjustment holes are vertically formed on each outer table leg. The lower end of the lifting lever has a positioning pin that can be inserted into the adjustment hole. The synchronized lifting mechanism also includes a connecting rod, which is located between the two lifting levers and connected to both levers at its two ends. The two lifting levers swing in the same direction. One lifting lever is connected to a push button that can push the lever to drive the other lifting lever to swing until both positioning pins are moved out of the adjustment holes. This synchronized lifting mechanism and table make unlocking easier and its structure simpler.

Description

Technical Field

[0001] This utility model belongs to the field of desk technology, and relates to a table leg synchronous lifting mechanism and a table. Background Technology

[0002] With the continuous reform of teaching equipment, the requirements for student desks and chairs are also gradually increasing. Existing desks must not only be stable, but also have the functions of lying down and sleeping and height adjustment. However, lying down and sleeping during lunch break will take up a lot of space. Since the space in a classroom is limited, many existing desks are designed with one side of the table leg to facilitate students' entry and exit during lunch break and to allow them to use part of the aisle space when lying down and sleeping.

[0003] However, when using a desk, books and students' arms usually exert force on the desk surface, requiring significant support. Therefore, to ensure the stability of a desk on one side, existing designs typically have two legs on one side of the desk, while the other side is suspended. For example, Chinese patent application [CN222367306U] discloses a lifting mechanism including a pair of side-by-side outer support legs. Each outer support leg has an inner support leg inserted into it, capable of moving up and down relative to the outer support leg. The outer support legs have several adjustment holes, and the lower end of each inner support leg has a positioning hole. A lifting lever is located within each inner support leg, hinged to the middle of the lever. The lower end of the lifting lever has an elastic catch that, under elastic force, can pass through the positioning hole and the corresponding adjustment hole. This lifting mechanism also includes a control slider positioned between the two inner support legs, capable of sliding up and down relative to them. The control slider is hinged to the upper ends of both lifting levers via a linkage assembly, and the sliding of the control slider causes the two lifting levers to swing synchronously. This lifting mechanism also includes an elastic element that can reset the control slider.

[0004] The aforementioned structure features a control slider positioned between two inner support legs. This control slider is connected to the lifting levers within the two inner support legs via a linkage assembly. Pushing the control slider causes the two lifting levers to swing synchronously in opposite directions via the linkage assembly, thus achieving synchronized lifting and lowering of the inner support legs. However, when the control slider is lifted, due to the numerous internal components, the movement requires not only the force to push the two lifting levers but also the pressure to compress the elastic elements, resulting in a relatively large force required for operation. Furthermore, since the control slider needs to be continuously pressed after unlocking, a large force must be applied to it continuously, leading to inconvenience in control. Additionally, when two tables are placed side by side, sufficient space must be left between them for hand passage to adjust the height, further complicating the adjustment process when the tables are placed in pairs. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a table leg synchronous lifting mechanism and a table. The technical problem to be solved by this utility model is: how to solve the problem of inconvenient operation of existing double table leg synchronous lifting mechanisms.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A table leg synchronous lifting mechanism includes two outer table legs located on the same side of the tabletop, an inner table leg slidably inserted into the upper end of the outer table legs, and a lifting lever hinged in the middle of the inner table leg. Each outer table leg has multiple adjustment holes vertically. The lower end of each lifting lever has a positioning pin that can be inserted into the adjustment hole. The synchronous lifting mechanism further includes a linkage rod, which is disposed between the two lifting levers and connected to the two lifting levers at both ends. The two lifting levers swing in the same direction. One of the lifting levers is connected to a push button that can push the lifting lever to drive the other lifting lever to swing through the linkage rod until the positioning pins are both moved out of the adjustment holes.

[0008] When adjusting the vertical position of the two inner and outer table legs on the same side of the tabletop, pressing the push button causes the lifting lever connected to the push button to swing, which in turn drives another lifting lever to swing via a linkage. Since the two lifting levers swing in the same direction, the positioning pins of both lifting levers can be moved out of the adjustment hole, simultaneously releasing the vertical lock on the two inner and outer table legs. This structure makes the unlocking method consistent with existing unlocking methods, which all require pressing the push button to unlock. After unlocking, the user needs to lift the tabletop. Therefore, after unlocking, the user can press the push button with one hand and lift the other side of the tabletop with the other hand, making it easier for the user to apply force to the tabletop and making the height adjustment of the tabletop more convenient. The two lifting levers are connected by a linkage, and the two lifting levers swing in the same direction, which means the unlocking direction is the same. This means that only the pushing force of pushing the two lifting levers is needed when pressing, without needing to overcome other forces, making unlocking more convenient and the structure simpler.

[0009] When two tables are placed side by side, the height of the tabletops can be adjusted by pressing the button. No adjustment space is needed; simply place the two tabletops side by side against each other, making adjustment more convenient.

[0010] In the aforementioned table leg synchronous lifting mechanism, one of the lifting levers has a through hole at its upper end along the length of the connecting rod, and the other lifting lever has a connection port for inserting the connecting rod. The end of the connecting rod can abut against the inner wall of the lifting lever. Both inner table legs have clearance holes for the connecting rod to pass through. One end of the connecting rod passes through the through hole and is connected to the push button, while the other end passes through the two clearance holes in sequence and is inserted into the connection port.

[0011] During installation, the other end of the linkage rod can be passed through the two clearance holes and inserted into the connection port in sequence, which realizes the initial connection and positioning of the linkage rod and another lifting lever. Then, the other end of the linkage rod is passed through the mounting through hole and connected to the push button, which realizes the quick installation of the linkage rod. When pushing, only the push button needs to be pushed, which is convenient for users to operate with one hand.

[0012] In the above-mentioned table leg synchronous lifting mechanism, a connecting block is provided on the mounting through hole, the push button is connected to one end of the connecting block, the connecting block is elongated, and a ring-shaped limiting protrusion is formed in the middle of the connecting block in the radial direction. The limiting protrusion abuts against the outer wall of the corresponding lifting lever, and the limiting protrusion is located on the side of the lifting lever near the push button.

[0013] By setting the limiting protrusion, since the lifting lever only needs to be pushed out of the adjustment hole of the outer table leg during the process of pushing the lifting lever, the lifting lever with the push button only needs to move in the direction of the other lifting lever, thus achieving the limiting. Therefore, by using the socket and abutment method, the two lifting levers can be pushed, which can facilitate operation and easy loading and unloading.

[0014] When the lifting lever is reset, the user releases the push button. The lower end of the lifting lever is equipped with an existing elastic element, such as a U-shaped spring or a spring, which can be used to reset the lifting button by its own elastic force after the push button is released.

[0015] In the aforementioned table leg synchronous lifting mechanism, the diameter of the clearance hole is larger than the outer diameter of the connecting rod.

[0016] The hole diameter design ensures that when the button is pushed, only the swing force required to overcome the lifting lever is needed, without any other friction. This makes the table leg synchronous lifting mechanism more convenient to use, requires less adjustment force, and is easier to unlock.

[0017] In the aforementioned table leg synchronous lifting mechanism, the push button is threadedly connected to the connecting block.

[0018] The use of a threaded connection makes the installation of the push button easier and facilitates future maintenance.

[0019] In the aforementioned table leg synchronous lifting mechanism, a long strip-shaped mounting block is provided on the mounting through hole. The mounting block has a mounting hole that runs through the length direction. The push button is connected to the mounting block, and one end of the linkage rod passes through the mounting hole and abuts against the push button.

[0020] The mounting block has mounting holes, allowing one end of the linkage rod to pass directly through them. This makes it easy to fit the mounting block onto the linkage rod, and the linkage rod can be limited by a push button. The push button not only pushes the linkage rod but also works with the mounting block to install one end of the linkage rod, making the overall installation more convenient.

[0021] Therefore, in the above structure, the push button and the mounting block can be connected by a thread or by a snap-fit.

[0022] In the above-mentioned table leg synchronous lifting mechanism, the push button is cylindrical and has a large diameter end and a small diameter end with an outer diameter smaller than the large diameter end. The small diameter end passes through one of the lifting levers and the corresponding inner table leg in sequence, and the large diameter end presses on the inner side wall of the lifting lever and is connected to one end of the linkage rod.

[0023] The design of the large-diameter end and the small-diameter end allows for the limiting of the lifting lever, making it more stable when pushing the lifting movement. It also allows for the limiting of the lifting lever after it resets, improving the speed of rapid reset when adjusting the lifting lever and enhancing the convenience of operation.

[0024] In the aforementioned table leg synchronous lifting mechanism, a limiting block is fixedly connected to the outer wall of one of the inner table legs, and the small-diameter end protrudes from the limiting block.

[0025] The limit block restricts the travel of the push button, preventing excessive pressing and allowing the linkage to drive another lifting lever to press against the corresponding inner table leg, thus improving the stability of the press.

[0026] In the aforementioned table leg synchronous lifting mechanism, the outer diameter of the large-diameter end is larger than the diameter of the clearance hole of the corresponding inner table leg.

[0027] This structure prevents the large-diameter end from protruding through the clearance hole during pressing, thus limiting the pressing stroke and improving pressing stability.

[0028] In the aforementioned table leg synchronous lifting mechanism, a blocking tube is connected between the two inner table legs. The two ends of the blocking tube respectively block the corresponding clearance holes, and the linkage rod is set inside the blocking tube.

[0029] The shielding tube enhances the structural strength between the two inner table legs and also shields moving parts such as the linkage rod, preventing safety issues and improving the safety and stability of the table leg synchronous lifting mechanism.

[0030] A table, characterized in that the table includes the aforementioned table leg synchronous lifting mechanism.

[0031] Compared with existing technologies, the synchronous lifting mechanism of this table leg has the following advantages: The unlocking method of this synchronous lifting mechanism is the same as the existing unlocking method, which is to press and push the button to unlock. After unlocking, the user needs to lift the table. Therefore, after unlocking, the user can press the push button with one hand and lift the other side of the table with the other hand, which makes it easier for the user to apply force to the table and make the height adjustment of the table more convenient. The two lifting levers are connected by a linkage rod, and the swing direction of the two lifting levers is the same, that is, the unlocking direction is the same. This means that when pressing, only the pushing force of pushing the two lifting levers is needed, and no other force needs to be overcome, which makes unlocking more convenient and its structural design simpler. Attached Figure Description

[0032] Figure 1 This is one of the structural schematic diagrams of this embodiment.

[0033] Figure 2 This is the second structural schematic diagram of Embodiment 1.

[0034] Figure 3 This is a top view of Embodiment 1.

[0035] Figure 4 yes Figure 3 Sectional view of AA.

[0036] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0037] Figure 6 yes Figure 4 A magnified view of a section at point B.

[0038] Figure 7 This is a schematic diagram of the structure of Embodiment 2.

[0039] Figure 8 This is a partial cross-sectional view of Embodiment 2.

[0040] Figure 9 This is a partial cross-sectional view of Embodiment 3.

[0041] In the diagram, 1 is the tabletop; 2 is the outer table leg; 21 is the adjustment hole; 3 is the inner table leg; 31 is the clearance hole; 4 is the lifting lever; 41 is the positioning pin; 42 is the mounting through hole; 43 is the connection port; 5 is the linkage rod; 6 is the push button; 61 is the large diameter end; 62 is the small diameter end; 7 is the connecting block; 71 is the limit protrusion; 8 is the limit block; 9 is the shielding tube; 10 is the mounting block; and 101 is the mounting hole. Detailed Implementation

[0042] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0043] Example 1

[0044] like Figure 1 , Figure 2 and Figure 4 As shown, the table leg synchronous lifting mechanism includes two outer table legs 2 located on the same side of the tabletop 1, an inner table leg 3 slidably inserted into the upper end of the outer table legs 2, and a lifting lever 4 hinged in the middle of the inner table legs 3. Multiple adjustment holes 21 are provided vertically on the outer table legs 2, and the lower end of the lifting lever 4 has a positioning pin 41 that can be inserted into the adjustment hole 21.

[0045] Specifically, such as Figure 1-4 As shown, the synchronous lifting mechanism also includes a linkage 5, which is disposed between two lifting levers 4 and connected to the two lifting levers 4 at both ends. The two lifting levers 4 swing in the same direction. One of the lifting levers 4 is connected to a push button 6 that can push the lifting lever 4 to drive the other lifting lever 4 to swing through the linkage 5 until the positioning pin 41 moves out of the adjustment hole 21.

[0046] When adjusting the vertical position of the two inner table legs 3 and the outer table leg 2 on the same side of the tabletop 1, pressing the push button 6 causes the lifting lever 4 connected to the push button 6 to swing along with the push button 6 and drive the other lifting lever 4 to swing via the linkage rod 5. Since the two lifting levers 4 swing in the same direction, the positioning pins 41 of both lifting levers 4 can be moved out of the adjustment hole 21, simultaneously releasing the vertical lock of the two inner table legs 3 and the outer table leg 2. The above structure makes this unlocking method consistent with the existing unlocking methods, both of which are performed by pressing the push button 6. After unlocking, the user needs to lift the tabletop 1 again. Therefore, after unlocking, the user can press the push button 6 with one hand and lift the other side of the tabletop 1 with the other hand, which makes it easier for the user to apply force to the tabletop 1 and make the height adjustment of the tabletop 1 more convenient. The two lifting levers 4 are connected by the linkage rod 5, and the two lifting levers 4 swing in the same direction, that is, the unlocking direction is the same. This means that when pressing, only the pushing force of pushing the two lifting levers 4 is needed, and no other force needs to be overcome, which makes unlocking more convenient and its structure simpler.

[0047] like Figure 4-6 As shown, one of the lifting levers 4 has a through hole 42 at its upper end along the length of the connecting rod 5, and the other lifting lever 4 has a connection port 43 for inserting the connecting rod 5. The end of the connecting rod 5 can abut against the inner wall of the lifting lever 4. Both inner table legs 3 have clearance holes 31 for the connecting rod 5 to pass through. One end of the connecting rod 5 passes through the through hole 42 and is connected to the push button 6. The other end passes through the two clearance holes 31 in sequence and is inserted into the connection port 43. A connecting block 7 is provided on the through hole 42. The push button 6 is fixedly connected to one end of the connecting block 7. The connecting block 7 is elongated. A ring-shaped limiting protrusion 71 is formed radially in the middle of the connecting block 7. The limiting protrusion 71 abuts against the outer wall of the corresponding lifting lever 4. The limiting protrusion 71 is located on the side of the lifting lever 4 closer to the push button 6. The push button 6 is threadedly connected to the connecting block 7. The diameter of the clearance hole 31 is larger than the outer diameter of the connecting rod 5.

[0048] The clearance hole 31 on the inner table leg 3 with the push button 6 passes through the inner table leg 3 along the pressing direction of the push button 6, while the clearance hole 31 of the other inner table leg 3 may be provided on the inner side, and the clearance hole 31 does not pass through the other inner table leg 3.

[0049] During processing, the clearance hole 31 on another inner table leg 3 can also penetrate through the inner table leg 3 in the pressing direction.

[0050] like Figure 4-6 As shown, a blocking tube 9 connects the two inner table legs 3. The two ends of the blocking tube 9 respectively block the corresponding clearance holes 31, and the connecting rod 5 is set inside the blocking tube 9.

[0051] Example 2

[0052] The content of this embodiment is basically the same as that of Embodiment 1, except that:

[0053] like Figure 7 and Figure 8 As shown, the push button 6 is cylindrical and has a large diameter end 61 and a small diameter end 62 with an outer diameter smaller than that of the large diameter end 61. The small diameter end 62 passes through one of the lifting levers 4 and the corresponding inner table leg 3 in sequence. The large diameter end 61 presses on the inner side wall of the lifting lever 4 and is connected to one end of the linkage rod 5. A limit block 8 is fixed on the outer side wall of the inner table leg 3. The small diameter end 62 passes through the limit block 8. The outer diameter of the large diameter end 61 is larger than the diameter of the clearance hole 31 of the corresponding inner table leg 3.

[0054] Example 3

[0055] The content of this embodiment is basically the same as that of Embodiment 1, except that:

[0056] like Figure 9 As shown, a long strip-shaped mounting block 10 is provided on the mounting through hole 42. The mounting block 10 has a mounting hole 101 that runs through the length direction. The push button 6 is connected to the mounting block 10, and one end of the linkage rod 5 passes through the mounting hole 101 and abuts against the push button 6.

[0057] Example 4

[0058] The content of this embodiment is basically the same as that of Embodiment 1, except that:

[0059] A table, wherein the table is provided with a table leg synchronous lifting mechanism as described in Embodiment 1, Embodiment 2, or Embodiment 3.

[0060] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A table leg synchronous lifting mechanism, comprising two outer table legs (2) located on the same side of a tabletop (1), an inner table leg (3) slidably inserted into the upper end of the outer table legs (2), and a lifting lever (4) hinged in the middle of the inner table leg (3), wherein each outer table leg (2) has a plurality of adjusting holes (21) vertically arranged on it, and the lower end of the lifting lever (4) has a positioning pin (41) that can be inserted into the adjusting hole (21), characterized in that, The synchronous lifting mechanism also includes a linkage rod (5), which is located between two lifting levers (4) and connected to the two lifting levers (4) at both ends. The two lifting levers (4) swing in the same direction. One of the lifting levers (4) is connected to a push button (6) that can push the lifting lever (4) to drive the other lifting lever (4) to swing through the linkage rod (5) until the positioning pin (41) moves out of the adjustment hole (21).

2. The synchronous leg lifting mechanism of claim 1, wherein, One of the lifting levers (4) has a through hole (42) at the upper end along the length of the connecting rod (5) and the other lifting lever (4) has a connection port (43) for inserting the connecting rod (5). The end of the connecting rod (5) can abut against the inner wall of the lifting lever (4). Both inner table legs (3) have clearance holes (31) for the connecting rod (5) to pass through. One end of the connecting rod (5) passes through the through hole (42) and is connected to the push button (6). The other end passes through the two clearance holes (31) and is inserted into the connection port (43).

3. The table leg synchronous lifting mechanism according to claim 2, characterized in that, A connecting block (7) is provided on the mounting through hole (42). The push button (6) is connected to one end of the connecting block (7). The connecting block (7) is long and narrow. A ring-shaped limiting protrusion (71) is formed in the middle of the connecting block (7) along the radial direction. The limiting protrusion (71) abuts against the outer wall of the corresponding lifting lever (4). The limiting protrusion (71) is located on the side of the lifting lever (4) close to the push button (6).

4. A synchronous lifting mechanism for legs of a table according to claim 2 or 3, characterized in that The diameter of the clearance hole (31) is larger than the outer diameter of the connecting rod (5).

5. The synchronous leg lifting mechanism of claim 2 or 3, wherein, The push button (6) is threadedly connected to the connecting block (7).

6. The table leg synchronous lifting mechanism according to claim 2 or 3, characterized in that, The mounting through hole (42) is provided with a long strip-shaped mounting block (10), and the mounting block (10) is provided with a mounting hole (101) that runs through the length direction. The push button (6) is connected to the mounting block (10), and one end of the linkage rod (5) passes through the mounting hole (101) and abuts against the push button (6).

7. The table leg synchronous lifting mechanism according to claim 1, characterized in that, The push button (6) is cylindrical and has a large diameter end (61) and a small diameter end (62) with an outer diameter smaller than that of the large diameter end (61). The small diameter end (62) passes through one of the lifting levers (4) and the corresponding inner table leg (3) in sequence. The large diameter end (61) presses on the inner wall of the lifting lever (4) and is connected to one end of the linkage rod (5).

8. The synchronous leg lifting mechanism of claim 7, wherein, A limiting block (8) is fixed to the outer wall of one of the inner table legs (3), and the small diameter end (62) protrudes from the limiting block (8).

9. The synchronous leg lifting mechanism of claim 2 or 3, wherein, A shielding tube (9) is connected between the two inner table legs (3). The two ends of the shielding tube (9) respectively shield the corresponding clearance holes (31), and the linkage rod (5) is set inside the shielding tube (9).

10. A table, characterized in that The table includes the table leg synchronous lifting mechanism of any one of claims 1-9.

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