Extensible electric lifting table

Abstract

The utility model discloses an extensible electric lifting table, which relates to the technical field of lifting tables, and comprises a table body, the table body comprises lifting legs and a table plate, the bottom of each lifting leg is movably connected with a base, an inner cavity of the table plate is provided with an extension mechanism, the extension mechanism comprises a rotating wheel, an extension slot and an extension plate for expanding the area of the table plate, and the rotating wheels are connected with the base. The electric lifting table comprises an expansion plate and a toothed plate used for moving the position of the expansion plate, a supporting mechanism is installed at the bottom of the expansion plate, and the supporting mechanism comprises a supporting base, an adjusting plate, a supporting plate used for supporting the position of the expansion plate and a guide plate used for conducting position adjustment along with the supporting plate. The rotating wheel is held to rotate, the rotating wheel rotates to drive the connecting rod to rotate, the connecting rod rotates to drive the gear to rotate, the gear rotates to drive the toothed plate to move, and the toothed plate moves to drive the expansion plate to move, so that the tabletop area of the table board is expanded and increased.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting desks, in particular to an expandable electric lifting desk. Background Technique

[0002] As a modern office furniture, the lifting desk is designed to help users achieve an alternating sitting and standing working mode by adjusting the height of the desktop, so as to prevent health problems caused by long-term sitting. Some existing lifting desks use electricity as the power source and control mechanical devices through motors to adjust the height of the desktop.

[0003] However, during the use of the existing electric lifting desk, the desktop area of the lifting desk is fixed. In actual use, according to actual needs, the desktop area may not be sufficient. At this time, documents or objects can only be placed in other positions and cannot be lifted synchronously with the lifting desk, which is quite inconvenient to use.

[0004] Combining the above problems, we will find that it is very difficult to avoid the above-mentioned problems simultaneously when using the existing electric lifting desks on the market. And even if these problems can be solved, external tools need to be used for cooperation, thus unable to achieve the desired effect. Therefore, we propose an expandable electric lifting desk. Content of the Utility Model

[0005] The purpose of the utility model is to provide an expandable electric lifting desk to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an expandable electric lifting desk, including a desk body, the desk body includes lifting legs and a table board, and the bottom of the lifting legs is movably connected with a base;

[0007] An expansion mechanism is installed in the inner cavity of the table board. The expansion mechanism includes a runner, an expansion slot, an expansion board for expanding the area of the table board, and a toothed plate for moving the position of the expansion board;

[0008] A support mechanism is installed at the bottom of the expansion board. The support mechanism includes a support seat, an adjustment board, a support plate for supporting the position of the expansion board, and a guide board for adjusting the position following the support plate.

[0009] Preferably, the front side of the runner is movably connected to the back side of the tabletop. The expansion slot is opened in the inner cavity of the tabletop. A connecting rod is fixedly connected to the front side of the runner. The surface of the connecting rod is movably connected to the inner cavity of the expansion slot. Gears are fixedly connected to both the front side and the back side of the surface of the connecting rod. The top and the bottom of the surface of the gear are meshed with the surface of the toothed plate. One side of the surface of the toothed plate is fixedly connected to the inner cavity of the expansion plate, and the other side of the surface of the toothed plate is movably connected to the inner cavity of the expansion plate. The surface of the expansion plate is movably connected to the inner cavity of the expansion slot. Protection pads are fixedly connected to both the front side and the back side of the surface of the expansion plate.

[0010] Preferably, second limiting slots are opened in both the front side and the back side of the inner cavity of the expansion slot. Second limiting blocks are movably connected to the inner cavities of the second limiting slots. One side of the second limiting block is fixedly connected to the surface of the expansion plate.

[0011] Preferably, the top of the support base is fixedly connected to the bottom of the expansion plate. One side of the adjusting plate is fixedly connected to the surface of the lifting leg. An activity slot is opened in the inner cavity of the adjusting plate. A first connecting shaft is fixedly connected to the inner cavity of the support base. The surface of the first connecting shaft is movably connected to the inner cavity of the support plate. A second connecting shaft is movably connected to the bottom of the inner cavity of the support plate. An activity seat is fixedly connected to the surface of the second connecting shaft. The surface of the activity seat is movably connected to the inner cavity of the activity slot.

[0012] Preferably, guiding slots are opened in both the front side and the back side of the inner cavity of the activity slot. Guiding plates are movably connected to the inner cavities of the guiding slots. One side of the guiding plate is fixedly connected to the surface of the activity seat.

[0013] Preferably, fixed shafts are fixedly connected to both the front side and the back side of the surface of the adjusting plate. Positioning plates are movably connected to the surfaces of the fixed shafts. A positioning slot is opened in the inner cavity of the positioning plate. The surface of the second connecting shaft is clamped in the inner cavity of the positioning slot. A baffle is movably connected to the bottom of the positioning plate. One side of the baffle is fixedly connected to the surface of the adjusting plate.

[0014] Preferably, an exercise mechanism is installed inside the lifting leg. The exercise mechanism includes a guiding slot which is opened on one side of the inner cavity of the lifting leg. An exercise rod is movably connected to the inner cavity of the guiding slot. A fixed sleeve is fixedly connected to the surface of the exercise rod. Pedals are fixedly connected to both sides of the surface of the fixed sleeve. Anti-slip bumps are fixedly connected to the tops of the pedals.

[0015] Preferably, connecting sleeves are fixedly connected to both sides of the surface of the exercise rod. Springs are fixedly connected to the tops of the connecting sleeves. A fixed block is fixedly connected to the top of the spring. One side of the fixed block is fixedly connected to the surface of the lifting leg.

[0016] Preferably, connecting seats are fixedly connected to the front side and the dorsal side of the top of the lifting legs. A reinforcing plate is fixedly connected to the inner side of the connecting seat. A fixing plate is installed on the outer side of the connecting seat. The connecting seat and the fixing plate are threadedly connected by bolts. The table board and the fixing plate are threadedly connected by bolts. A lifting box is fixedly connected to the inner side of the connecting seat. A motor is connected to the inner cavity of the lifting box. A worm is fixedly connected to the output end of the motor. A worm gear is meshed and connected to the surface of the worm. A lead screw body is fixedly connected to the inner cavity of the worm gear. A lead screw nut is threadedly connected to the surface of the lead screw body. A fixing leg is movably connected to the bottom of the lead screw nut. The bottom of the fixing leg is fixedly connected to the top of the base. The surface of the fixing leg is movably connected to the inner cavity of the lifting leg. The surface of the lead screw nut is fixedly connected to the inner cavity of the lifting leg.

[0017] Preferably, a moving groove is formed on one side of the inner cavity of the connecting seat. A connecting plate is movably connected to the inner cavity of the moving groove. One side of the connecting plate is fixedly connected to the surface of the connecting seat. First limiting grooves are formed on the front side and the dorsal side of the inner cavity of the moving groove. First limiting blocks are movably connected to the inner cavities of the first limiting grooves. One side of each first limiting block is fixedly connected to the surface of the connecting plate.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] 1. By arranging an expansion mechanism in the utility model, by holding the rotating wheel and rotating it, the rotation of the rotating wheel drives the connecting rod to rotate, the rotation of the connecting rod drives the gear to rotate, the rotation of the gear drives the toothed plate to move, and the movement of the toothed plate drives the expansion plate to move, so as to expand and increase the desktop area of the table board;

[0020] 2. By arranging a support mechanism in the utility model, the movement of the expansion plate drives the support seat to move, the movement of the support seat drives the support plate to move. During the movement of the support plate, it rotates inside the movable seat and simultaneously drives the movable seat to move inside the movable groove. When the support seat moves to a proper position, the second connecting shaft can be clamped inside the positioning groove, so as to fix the position of the movable seat and stably support the expansion plate;

[0021] 3. By arranging an exercise mechanism in the utility model, by placing the feet on the top of the pedal and stepping on it, the movement of the pedal drives the fixed sleeve to move, the movement of the fixed sleeve drives the exercise rod to move inside the guiding groove, and during the movement of the exercise rod, it drives the connecting sleeve to move. The movement of the connecting sleeve drives the spring to be squeezed and deformed, so as to provide support for the exercise rod, increase the force required to push the exercise rod to move, and can drive the exercise rod to quickly reset when not under force, thus achieving an exercise effect on the legs. Description of the Drawings

[0022] Figure 1 This is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 This is a connection schematic diagram of the exercise rod structure of the present utility model;

[0024] Figure 3 This is a bottom view of the tabletop structure of the present utility model;

[0025] Figure 4 This is a connection schematic diagram of the support plate structure of the present utility model;

[0026] Figure 5 This is a connection schematic diagram of the tabletop structure of the present utility model;

[0027] Figure 6 This is a cross-sectional view of the tabletop structure of the present utility model;

[0028] Figure 7 This is a connection schematic diagram of the connecting rod structure of the present utility model;

[0029] Figure 8 This is a connection schematic diagram of the lifting leg structure of the present utility model;

[0030] Figure 9 This is a connection schematic diagram of the connecting plate structure of the present utility model;

[0031] Figure 10 This is a cross-sectional view of the lifting leg structure of the present utility model;

[0032] Figure 11 This is a cross-sectional view of the lifting box structure of the present utility model.

[0033] In the figure: 1. Table body; 101. Lifting leg; 102. Table board; 103. Base; 104. Connecting plate; 105. Reinforcing plate; 106. Connecting seat; 107. Lifting box; 108. Fixed plate; 109. Bolt; 110. First limiting groove; 111. Moving groove; 112. First limiting block; 113. Screw rod body; 114. Fixed leg; 115. Screw nut; 116. Motor; 117. Worm gear; 118. Worm; 2. Expansion mechanism; 201. Runner; 202. Expansion plate; 203. Protection pad; 204. Second limiting block; 205. Expansion slot; 206. Second limiting groove; 207. Connecting rod; 208. Gear; 209. Rack; 3. Support mechanism; 301. Support plate; 302. Support seat; 303. Adjusting plate; 304. First connecting shaft; 305. Second connecting shaft; 306. Movable seat; 307. Guide plate; 308. Movable groove; 309. Baffle; 310. Fixed shaft; 311. Guide groove; 312. Positioning groove; 313. Positioning plate; 4. Exercise mechanism; 401. Fixed sleeve; 402. Anti-slip convex block; 403. Pedal; 404. Guide groove; 405. Exercise rod; 406. Fixed block; 407. Spring; 408. Connecting sleeve. Detailed implementation mode

[0034] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] Please refer to Figures 1 - 11 , the present invention provides a technical solution: An expandable electric lifting table, including a table body 1, the table body 1 includes a lifting leg 101 and a table board 102, and the bottom of the lifting leg 101 is movably connected to a base 103;

[0037] An expansion mechanism 2 is installed in the inner cavity of the table board 102. The expansion mechanism 2 includes a runner 201, an expansion slot 205 and an expansion plate 202 for expanding the area of the table board 102, and a rack 209 for moving the position of the expansion plate 202.

[0038] As a further limitation of the present utility model, the front side of the runner 201 is movably connected to the back side of the table board 102. The expansion slot 205 is opened in the inner cavity of the table board 102. A connecting rod 207 is fixedly connected to the front side of the runner 201. The surface of the connecting rod 207 is movably connected to the inner cavity of the expansion slot 205. Gears 208 are fixedly connected to both the front side and the back side of the surface of the connecting rod 207. The top and the bottom of the surface of the gear 208 are meshed with the surface of the toothed plate 209. One side of the surface of the toothed plate 209 is fixedly connected to the inner cavity of the expansion plate 202. The other side of the surface of the toothed plate 209 is movably connected to the inner cavity of the expansion plate 202. The surface of the expansion plate 202 is movably connected to the inner cavity of the expansion slot 205. Protection pads 203 are fixedly connected to both the front side and the back side of the surface of the expansion plate 202. Through the setting of the gear 208, the toothed plate 209 can be driven to move, so that the expansion plate 202 is driven to move through the movement of the toothed plate 209, and the position of the expansion plate 202 is adjusted to expand or contract the expansion plate 202.

[0039] As a further limitation of the present utility model, second limiting slots 206 are opened on both the front side and the back side of the inner cavity of the expansion slot 205. A second limiting block 204 is movably connected to the inner cavity of the second limiting slot 206. One side of the second limiting block 204 is fixedly connected to the surface of the expansion plate 202. Through the setting of the second limiting slot 206, the second limiting block 204 can move inside the expansion slot 205, so as to play a limiting role on the expansion plate 202 during the movement of the second limiting block 204, and prevent the expansion plate 202 from detaching from the inside of the expansion slot 205.

[0040] As a further limitation of the present utility model, connection seats 106 are fixedly connected to both the front side and the back side of the top of the lifting leg 101. A reinforcing plate 105 is fixedly connected to the inner side of the connection seat 106. A fixing plate 108 is installed on the outer side of the connection seat 106. The connection seat 106 and the fixing plate 108 are threadedly connected by bolts 109. The table board 102 and the fixing plate 108 are threadedly connected by bolts 109. A lifting box 107 is fixedly connected to the inner side of the connection seat 106. A motor 116 is connected to the inner cavity of the lifting box 107. A worm 118 is fixedly connected to the output end of the motor 116. A worm gear 117 is meshed with the surface of the worm 118. A screw rod body 113 is fixedly connected to the inner cavity of the worm gear 117. A screw nut 115 is threadedly connected to the surface of the screw rod body 113. The bottom of the screw nut 115 is movably connected to a fixed leg 114. The bottom of the fixed leg 114 is fixedly connected to the top of the base 103. The surface of the fixed leg 114 is movably connected to the inner cavity of the lifting leg 101. The surface of the screw nut 115 is fixedly connected to the inner cavity of the lifting leg 101. Through the setting of the worm gear 117, the screw rod body 113 can be driven to rotate during the rotation process, so that the screw nut 115 can be driven to move through the rotation of the screw rod body 113. The lifting leg 101 is driven to move through the movement of the screw nut 115 to lift the position of the lifting leg 101.

[0041] As a further limitation of the present utility model, a moving groove 111 is formed on one side of the inner cavity of the connection seat 106. A connecting plate 104 is movably connected to the inner cavity of the moving groove 111. One side of the connecting plate 104 is fixedly connected to the surface of the connection seat 106. First limiting grooves 110 are formed on both the front side and the back side of the inner cavity of the moving groove 111. First limiting blocks 112 are movably connected to the inner cavities of the first limiting grooves 110. One side of each first limiting block 112 is fixedly connected to the surface of the connecting plate 104. Through the setting of the moving groove 111, the connecting plate 104 can move inside the connection seat 106, so that the supporting area of the connection seat 106 can be expanded to adapt to spaces of different sizes. Through the setting of the first limiting blocks 112, the movement of the connecting plate 104 is limited to prevent the connecting plate 104 from disengaging from the inside of the moving groove 111 during the movement.

[0042] The specific implementation of this embodiment is as follows: First, hold the rotating wheel 201 and rotate it. The rotation of the rotating wheel 201 drives the connecting rod 207 to rotate. The rotation of the connecting rod 207 drives the gear 208 to rotate. The rotation of the gear 208 drives the toothed plate 209 to move. The movement of the toothed plate 209 drives the expansion plate 202 to move inside the expansion slot 205, so as to expand and increase the desktop area of the tabletop 102. And during the movement of the expansion plate 202, it will drive the second limit block 204 to move inside the second limit slot 206 to limit the movement of the expansion plate 202 and prevent the expansion plate 202 from detaching from the inside of the expansion slot 205. After the expansion plate 202 is expanded, the motor 116 drives the worm 118 to rotate. The rotation of the worm 118 drives the worm wheel 117 to rotate. The rotation of the worm wheel 117 drives the screw rod body 113 to rotate. The rotation of the screw rod body 113 drives the screw nut 115 to move. The movement of the screw nut 115 drives the lifting leg 101 to move on the surface of the fixed leg 114, so as to lift the tabletop of the tabletop 102. Before the tabletop 102 is installed, hold the connecting plate 104 and move it inside the moving slot 111. The movement of the connecting plate 104 can drive one side of the connecting seat 106 to move, so that the area of the connecting seat 106 can be adjusted according to the indoor area. At the same time, during the movement of the connecting plate 104, it will drive the first limit block 112 to move inside the first limit slot 110, so as to limit the movement of the connecting plate 104 and prevent the connecting plate 104 from detaching from the inside of the moving slot 111.

[0043] Embodiment 2

[0044] Please refer to Figures 1 - 4 , the present invention provides a technical solution: an expandable electric lifting table. The present invention makes corresponding improvements to the technical problems mentioned in the background technology. A support mechanism 3 is installed at the bottom of the expansion plate 202. The support mechanism 3 includes a support seat 302, an adjustment plate 303, a support plate 301 for supporting the position of the expansion plate 202, and a guide plate 307 for following the position adjustment of the support plate 301.

[0045] As a further limitation of the present utility model, the top of the support base 302 is fixedly connected to the bottom of the extension plate 202. One side of the adjustment plate 303 is fixedly connected to the surface of the lifting leg 101. An activity groove 308 is provided in the inner cavity of the adjustment plate 303. A first connecting shaft 304 is fixedly connected to the inner cavity of the support base 302. The surface of the first connecting shaft 304 is movably connected to the inner cavity of the support plate 301. The bottom of the inner cavity of the support plate 301 is movably connected to a second connecting shaft 305. The surface of the second connecting shaft 305 is fixedly connected to an activity seat 306. The surface of the activity seat 306 is movably connected to the inner cavity of the activity groove 308. Through the setting of the first connecting shaft 304, the top of the support plate 301 is supported. Through the setting of the second connecting shaft 305, the bottom of the support plate 301 is supported, so that the support plate 301 can rotate inside the support base 302 and the activity seat 306. Through the setting of the support plate 301, it plays a supporting role in the bottom of the extension plate 202, enabling it to be stably used after expansion. Through the setting of the activity groove 308, the activity seat 306 can move inside the adjustment plate 303, so that it can be adjusted following the position of the support plate 301, enabling the support plate 301 to move stably.

[0046] As a further limitation of the present utility model, guide grooves 311 are provided on the front side and the back side of the inner cavity of the activity groove 308. A guide plate 307 is movably connected to the inner cavity of the guide groove 311. One side of the guide plate 307 is fixedly connected to the surface of the activity seat 306. Through the setting of the guide groove 311, the guide plate 307 can move inside the activity groove 308, thereby guiding the movement of the activity seat 306 and making the movement of the activity seat 306 more stable.

[0047] As a further limitation of the present utility model, fixed shafts 310 are fixedly connected to the front side and the back side of the surface of the adjustment plate 303. A positioning plate 313 is movably connected to the surface of the fixed shaft 310. A positioning groove 312 is provided in the inner cavity of the positioning plate 313. The inner cavity of the positioning groove 312 is clamped with the surface of the second connecting shaft 305. The bottom of the positioning plate 313 is movably connected to a baffle 309. One side of the baffle 309 is fixedly connected to the surface of the adjustment plate 303. Through the setting of the fixed shaft 310, the position of the positioning plate 313 is supported, enabling it to rotate on the surface of the positioning plate 313, so that the position of the positioning plate 313 can be adjusted. Through the setting of the positioning groove 312, when the second connecting shaft 305 reaches the appropriate position, the position of the second connecting shaft 305 can be fixed, thereby fixing the position of the support plate 301 and enabling it to stably support the extension plate 202. Through the setting of the baffle 309, the position of the positioning plate 313 is positioned, thereby supporting the reinforcing plate 105 inside the positioning groove 312 and preventing its position from shifting.

[0048] The specific implementation of this embodiment is as follows: Firstly, during the movement of the extension board 202, the support base 302 will be driven to move. The movement of the support base 302 drives the support plate 301 to move. During the movement of the support plate 301, it will rotate inside the support base 302 and the movable seat 306 under the support of the first connecting shaft 304 and the second connecting shaft 305. At the same time, the movable seat 306 is driven to move inside the movable groove 308. And during the movement of the movable seat 306, the guide plate 307 will be driven to move inside the guide groove 311, thus guiding the movement of the movable seat 306 and making the movement of the movable seat 306 more stable. And during the upward movement of the second connecting shaft 305, it will push the positioning plate 313 to rotate on the surface of the fixed shaft 310, thereby preventing the positioning plate 313 from blocking the upward movement of the second connecting shaft 305. When the support base 302 moves to a suitable position, the second connecting shaft 305 can be moved downward and clamped inside the positioning groove 312. The position of the positioning plate 313 is supported and fixed by the baffle 309 to prevent the second connecting shaft 305 from shifting in position, so that the position of the movable seat 306 can be fixed and the extension board 202 can be stably supported.

[0049] Embodiment Three

[0050] Please refer to Figures 1 - 2 , the present utility model provides a technical solution: an expandable electric lifting table. The present utility model makes corresponding improvements to the technical problems mentioned in the background art. An exercise mechanism 4 is installed inside the inner side of the lifting leg 101. The exercise mechanism 4 includes a guiding groove 404, and the guiding groove 404 is opened on one side of the inner cavity of the lifting leg 101. An exercise rod 405 is movably connected inside the guiding groove 404. A fixing sleeve 401 is fixedly connected to the surface of the exercise rod 405. On both sides of the surface of the fixing sleeve 401, pedals 403 are fixedly connected. Anti-slip bumps 402 are fixedly connected to the top of the pedals 403. Through the setting of the guiding groove 404, it plays a guiding role in the movement of the exercise rod 405, enabling it to move stably inside the inner side of the lifting leg 101. Through the setting of the pedals 403, the contact area between the feet and the exercise rod 405 is increased, thus facilitating the movement of the exercise rod 405.

[0051] As a further limitation of the present utility model, on both sides of the surface of the exercise rod 405, connecting sleeves 408 are fixedly connected. Springs 407 are fixedly connected to the tops of the connecting sleeves 408. Fixing blocks 406 are fixedly connected to the tops of the springs 407. One side of the fixing block 406 is fixedly connected to the surface of the lifting leg 101. Through the setting of the fixing block 406, it plays a fixing role in the position of the spring 407. Thus, through the setting of the spring 407, it plays a supporting role in the movement of the exercise rod 405, improving the acting force required during the movement of the exercise rod 405, and can drive it to quickly reset when the exercise rod 405 is not stressed.

[0052] The specific implementation of this embodiment is as follows: First, place the foot on the top of the pedal 403 and step on it. The movement of the pedal 403 drives the movement of the fixed sleeve 401. The movement of the fixed sleeve 401 drives the exercise rod 405 to move inside the guiding groove 404. And during the movement of the exercise rod 405, it will drive the connecting sleeve 408 to move. The movement of the connecting sleeve 408 drives the spring 407 to be squeezed and deformed, so as to provide support for the exercise rod 405, increase the force required to push the exercise rod 405 to move, and can drive the exercise rod 405 to quickly reset when not under force, thus achieving an exercise effect on the legs.

[0053] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood 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. An expandable electric lifting table, comprising a table body (1), characterized in that: The table body (1) comprises a lifting leg (101) and a table top (102), and the bottom of the lifting leg (101) is movably connected to a base (103); An expansion mechanism (2) is installed in the inner cavity of the table top (102), and the expansion mechanism (2) comprises a rotating wheel (201), an expansion slot (205), an expansion plate (202) for expanding the area of ​​the table top (102), and a tooth plate (209) for moving the position of the expansion plate (202); A support mechanism (3) is installed at the bottom of the expansion plate (202), and the support mechanism (3) comprises a support seat (302), an adjustment plate (303), a support plate (301) for supporting the position of the expansion plate (202), and a guide plate (307) for following the support plate (301) to adjust the position.

2. The expandable electric lifting table according to claim 1, characterized in that: The front side of the rotating wheel (201) is movably connected to the back side of the table top (102); the expansion slot (205) is opened in the inner cavity of the table top (102); the front side of the rotating wheel (201) is fixedly connected to a connecting rod (207); the surface of the connecting rod (207) is movably connected to the inner cavity of the expansion slot (205); the front side and the back side of the surface of the connecting rod (207) are both fixedly connected to a gear (208); the top and the bottom of the surface of the gear (208) are both meshed and connected to the surface of a tooth plate (209); one side of the surface of the tooth plate (209) is fixedly connected to the inner cavity of the expansion plate (202); the other side of the surface of the tooth plate (209) is movably connected to the inner cavity of the expansion plate (202); the surface of the expansion plate (202) is movably connected to the inner cavity of the expansion slot (205); and the front side and the back side of the surface of the expansion plate (202) are both fixedly connected to a protective pad (203).

3. The expandable electric lifting table according to claim 2, characterized in that: A second limiting groove (206) is provided on the front side and the back side of the inner cavity of the expansion slot (205); the inner cavity of the second limiting groove (206) is movably connected to a second limiting block (204); and one side of the second limiting block (204) is fixedly connected to the surface of the expansion board (202).

4. The expandable electric lifting table according to claim 1, characterized in that: The top of the support seat (302) is fixedly connected to the bottom of the expansion plate (202), one side of the adjustment plate (303) is fixedly connected to the surface of the lifting leg (101), the inner cavity of the adjustment plate (303) is provided with a movable groove (308), the inner cavity of the support seat (302) is fixedly connected to a first connecting shaft (304), the surface of the first connecting shaft (304) is movably connected to the inner cavity of the support plate (301), the bottom of the inner cavity of the support plate (301) is movably connected to a second connecting shaft (305), the surface of the second connecting shaft (305) is fixedly connected to a movable seat (306), and the surface of the movable seat (306) is movably connected to the inner cavity of the movable groove (308).

5. The expandable electric lifting table according to claim 4, characterized in that: The front and back sides of the inner cavity of the movable groove (308) are both provided with guide grooves (311), the inner cavity of the guide groove (311) is movably connected to a guide plate (307), and one side of the guide plate (307) is fixedly connected to the surface of the movable seat (306).

6. The expandable electric lifting table according to claim 1, characterized in that: The front side and the back side of the surface of the adjustment plate (303) are both fixedly connected to a fixed shaft (310), the surface of the fixed shaft (310) is movably connected to a positioning plate (313), the inner cavity of the positioning plate (313) is provided with a positioning groove (312), the inner cavity of the positioning groove (312) is snap-fitted with the surface of the second connecting shaft (305), the bottom of the positioning plate (313) is movably connected to a baffle (309), and one side of the baffle (309) is fixedly connected to the surface of the adjustment plate (303).

7. The expandable electric lifting table according to claim 1, characterized in that: An exercise mechanism (4) is installed on the inner side of the lifting leg (101), and the exercise mechanism (4) comprises a guide groove (404), the guide groove (404) is opened on one side of the inner cavity of the lifting leg (101), the inner cavity of the guide groove (404) is movably connected to an exercise rod (405), the surface of the exercise rod (405) is fixedly connected to a fixing sleeve (401), both sides of the surface of the fixing sleeve (401) are fixedly connected to pedals (403), and the top of the pedal (403) is fixedly connected to an anti-slip bump (402).

8. The expandable electric lifting table according to claim 7, characterized in that: Both sides of the surface of the exercise bar (405) are fixedly connected to connecting sleeves (408), the top of the connecting sleeve (408) is fixedly connected to a spring (407), the top of the spring (407) is fixedly connected to a fixing block (406), and one side of the fixing block (406) is fixedly connected to the surface of the lifting leg (101).

9. The expandable electric lifting table according to claim 1, characterized in that: The front side and the back side of the top of the lifting leg (101) are fixedly connected to a connecting seat (106), the inner side of the connecting seat (106) is fixedly connected to a reinforcing plate (105), the outer side of the connecting seat (106) is installed with a fixing plate (108), the connecting seat (106) and the fixing plate (108) are threadedly connected via bolts (109), the table top (102) and the fixing plate (108) are threadedly connected via bolts (109), the inner side of the connecting seat (106) is fixedly connected to a lifting box (107), the inner cavity of the lifting box (107) is connected to a motor (116), and the motor (116) ) is fixedly connected to an output end thereof with a worm (118), the surface of the worm (118) is meshingly connected to a worm wheel (117), the inner cavity of the worm wheel (117) is fixedly connected to a screw body (113), the surface of the screw body (113) is threadedly connected to a screw nut (115), the bottom of the screw nut (115) is movably connected to a fixed leg (114), the bottom of the fixed leg (114) is fixedly connected to the top of the base (103), the surface of the fixed leg (114) is movably connected to the inner cavity of the lifting leg (101), and the surface of the screw nut (115) is fixedly connected to the inner cavity of the lifting leg (101).

10. The expandable electric lifting table according to claim 9, characterized in that: A movable groove (111) is provided on one side of the inner cavity of the connecting seat (106); the inner cavity of the movable groove (111) is movably connected to a connecting plate (104); one side of the connecting plate (104) is fixedly connected to the surface of the connecting seat (106); a first limiting groove (110) is provided on the front and back sides of the inner cavity of the movable groove (111); the inner cavity of the first limiting groove (110) is movably connected to a first limiting block (112); one side of the first limiting block (112) is fixedly connected to the surface of the connecting plate (104).

Images