Electric height adjustable desk

Abstract

The present invention discloses an electric lift table, which includes a table top and a table frame connected to the bottom of the table top; two lift legs, respectively provided on either side of the bottom of the table frame, each lift leg including a lift column, a drive motor, and a motor housing connected to the top of the lift column; a set of protruding connecting columns are connected to both ends of the motor housing, each connecting column having a free end provided with a limit column head having an outer diameter larger than that of the connecting column; the table frame is provided with a socket for receiving the limit column heads of the two sets of connecting columns; a sliding member is slidably engaged within the table frame, the sliding member being provided with at least one set of locking hooks; a wrench is rotatably connected to the table frame and is used to drive the sliding member to slide so that the locking hooks on the sliding member lock the at least one set of connecting columns extending into the sockets. The electric lift table allows the lift legs to be quickly assembled without the need for screw installation, is simple and convenient to operate, and has a secure connection and good stability.

Description

Technical Field

[0001] The invention relates to the technical field of office furniture, in particular to an electric lifting table. Background Art

[0002] A lift table is an office desk with adjustable height that can be adjusted according to a person's height, sitting posture, or standing posture. It generally includes electric lift tables and manual lift tables. Existing electric lift tables, especially dual-motor driven electric lift tables, have a structure that includes a table top, a base, two liftable legs, and a crossbeam connecting the two legs. The top of each leg is connected to a motor housing, and a drive motor is installed in the motor housing. The rotating shaft of the drive motor is connected to a screw lift mechanism in the leg for driving the screw lift mechanism to rotate and thereby raise or lower the leg. To ensure a stable connection between the legs and the table top and maintain the stability of the table top during the lifting process, the connection method between the legs and the crossbeam of existing electric lift tables is generally to connect the motor housing to the crossbeam via at least four fastening screws, making the installation of the legs more complicated. In particular, when customers purchase and assemble the two legs, at least eight screws are required, which takes a long time and is more complicated to assemble. Therefore, people improve the installation efficiency of table legs by reducing the number of fastening screws. For example, the prior application with publication number CN209450053U, entitled Electric Lift Table, discloses a structure comprising a table top, a base, two liftable table leg assemblies, and a crossbeam connecting the bottom of the table top. Each leg assembly comprises a liftable table leg and a driver housing connected to the top of the leg. The first end of the driver housing is engaged with the crossbeam, and the second end of the driver housing is fixedly connected to the crossbeam via fasteners. Although the above-mentioned prior art electric lift table improves the installation efficiency of the table legs, during the installation process, screws must be installed on the second end of the driver housing to fix the second end of the driver housing to the crossbeam. This operation is relatively cumbersome and cannot meet the demand for quick installation of the table legs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned prior art and provide an electric lift table that can quickly assemble the lift table legs without the need for installing screws, is simple and convenient to operate, and has a firm connection and good stability.

[0004] The technical solution of the present invention is to provide an electric lifting table with the following structure:

[0005] A table top and a table frame connected to the bottom of the table top;

[0006] Two lifting table legs are respectively arranged on both sides of the bottom of the table frame, and each lifting table leg includes a lifting column, a drive motor and a motor cover connected to the top of the lifting column;

[0007] The two ends of the motor housing are respectively connected to a group of protruding connecting columns, and the free end of each connecting column is provided with a limiting column head with an outer diameter larger than the outer diameter of the connecting column, and the table frame is provided with a socket for plugging the limiting column heads of the two groups of connecting columns;

[0008] A sliding member, slidably fitted in the table frame, wherein the sliding member is provided with at least one set of locking hooks;

[0009] The wrench is rotatably connected to the table frame and is used for driving the sliding member to slide so that the locking hook on the sliding member locks at least one group of connecting columns extending into the insertion hole.

[0010] Preferably, the table frame includes two parallel and hollow beams, and the socket is arranged at the bottom of the beams; the sliding part includes two sliders that slide in the inner holes of the beams, and the two sliders are connected by a connecting rod, each slider is provided with a notch for inserting the limiting column head of the connecting column, and a bayonet is provided on the bottom wall on one side of the notch, and the bayonet forms the locking hook.

[0011] Preferably, the wrench is provided with an arc-shaped pushing portion and a positioning slot from the inside to the outside. The arc-shaped pushing portion can squeeze the connecting rod to make the sliding part slide when the wrench rotates. When the locking hook on the sliding part locks the connecting column, the positioning slot is connected to the connecting rod to lock the position of the connecting rod.

[0012] Preferably, the socket includes a first socket and a second socket that are interconnected, the aperture size of the first socket is larger than the aperture size of the second socket, and the first socket and the second socket are distributed in sequence along the locking direction of the sliding part; the aperture size of the first socket is larger than the outer diameter size of the limiting column head, and the aperture size of the second socket is smaller than the outer diameter size of the limiting column head.

[0013] Preferably, two coaxial rotating shafts are connected to the two beams, the wrench is rotatably connected to the two rotating shafts, the two sliders are respectively provided with a guide hole extending along the sliding direction of the slider, and the two rotating shafts are clearance-fitted in the two guide holes.

[0014] Preferably, two elongated holes are symmetrically provided on the opposite inner side walls of the two cross beams, and the connecting rod is loosely fitted in the two elongated holes.

[0015] Preferably, the arc-shaped pushing portion is an arc-shaped pushing portion that is lower on the outside and higher on the inside.

[0016] Preferably, two connecting holes are respectively provided at both ends of the motor cover, and the two connecting holes are located on both sides of the motor cover; the connecting column includes a threaded rod passing through the connecting hole from bottom to top, the limiting column head is threadedly connected to the threaded rod, and the lower end of the limiting column head is provided with a limiting step, the lower end of the limiting step is against the motor cover, and the height of the limiting step is greater than or equal to the thickness of the lock hook.

[0017] Preferably, the sliding member is provided with two groups of locking hooks, which are distributed in sequence along the length direction of the sliding member, and the two groups of locking hooks are arranged corresponding to the two groups of connecting columns on the motor cover, for locking the two groups of connecting columns extending into the socket.

[0018] After adopting the above structure, the electric lifting table of the present invention has the following advantages compared with the prior art: the electric lifting table is connected to a group of connecting columns at both ends of the motor cover, and a limit column head is provided at the free end or upper end of each connecting column, that is, when the product leaves the factory, two groups of connecting columns are pre-installed at both ends of the motor cover, and the user does not need to install the connecting columns again when assembling the product after purchasing it; a socket for inserting the limit column heads of the connecting columns is provided at the bottom of the table frame, and a slidable sliding member is provided in the table frame, and the sliding member is provided with a locking hook that can lock at least one group of connecting columns inserted into the socket, that is, when the wrench drives the sliding member, the locking hook can be locked. When the parts move, the lock hook can hook the limiting column head of the connecting column, thereby completing the installation of the lifting table legs and the table frame; therefore, when assembling the lifting table legs and the table frame of the electric lifting table, it is only necessary to insert the connecting column of the motor cover of the lifting table legs into the socket at the bottom of the table frame from bottom to top, and then pull the wrench. The wrench drives the sliding part to slide, so that the lock hook of the sliding part hooks the limiting column head of the connecting column in the socket, and drives the connecting column to move slightly in the sliding direction of the sliding part, so that the lower end surface of the limiting column head fits on the end surface of the inner end of the socket. Under the locking action of the lock hook, the motor cover of the lifting table legs and the table frame are connected together. During the assembly process of the lifting table legs and the table frame, there is no need to use manual tools and installation screws. Only the wrench needs to be pulled to complete the connection and locking of the lifting table legs and the table frame. The operation is simple and convenient, and the lifting table legs can be quickly assembled. The user experience is good, and the connection between the lifting table legs and the table frame is firm and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front structural schematic diagram of the electric lift table of the present invention.

[0020] Figure 2 It is a schematic diagram of the bottom structure of the electric lifting table of the present invention.

[0021] Figure 3 It is a schematic diagram of the connection structure between the lifting table legs and the table frame of the electric lifting table of the present invention.

[0022] Figure 4It is a schematic diagram of the assembly structure of the lifting table legs and the table frame of the electric lifting table of the present invention.

[0023] Figure 5 It is a partial cross-sectional structural schematic diagram of the electric lifting table of the present invention.

[0024] Figure 6 2 is a schematic structural diagram of another embodiment of the sliding member of the electric lift table of the present invention.

[0025] As shown in the figure:

[0026] 1. Table top, 2. Table frame, 200. Crossbeam, 201. Socket, 202. First socket, 203. Second socket, 204. Long hole, 3. Lifting table legs, 300. Lifting column, 301. Motor cover, 302. Connecting hole, 303. Connecting column, 304. Limiting column head, 305. Threaded rod, 306. Limiting step, 4. Base, 5. Wrench, 500. Rotating shaft, 501. Arc-shaped pushing part, 502. Positioning slot, 6. Sliding part, 600. Sliding block, 601. Locking hook, 602. Notch, 603. Bayonet, 604. Connecting rod, 605. Guide hole, 7. Controller, 8. Hand controller. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] See also Figures 1 to 5 As shown;

[0029] The present invention provides an electric lift table, which includes a table top 1 and a table frame 2 connected to the bottom of the table top 1; two lift legs 3, respectively provided on both sides of the bottom of the table frame 2, each lift leg 3 including a lift column 300, a drive motor, and a motor housing 301 connected to the top of the lift column 300; the electric lift table also includes a base 4 connected to the bottom of the lift legs 3, and the table frame 2 is provided with a controller 7 for controlling the operation of the drive motor. The controller 7 is connected to an external power supply via a power supply connection. A hand controller 8 is provided on the side of the table top 1 close to the user. The hand controller 8 is electrically connected to the controller 7 and is used to send lifting instructions to the controller 7. The table frame 2 includes two parallel and hollow beams 200 and two support plates 205 mounted at both ends of the beams 200. The two support plates 205 and the beams 200 are respectively fixed to the bottom of the table top 1 by screws. The bottom of the motor cover 301 is connected to a base plate, and the two ends of the base plate are respectively connected to a group of protruding connecting columns 303, and the free end of each connecting column 303 is provided with a limiting column head 304 with an outer diameter larger than the outer diameter of the connecting column, that is, the two ends of the motor cover 301 are respectively provided with two connecting holes 302, and the two connecting holes 302 are located on both sides of the motor cover 301; the connecting column 303 includes a threaded rod 305 passing through the connecting hole from bottom to top, and the limiting column head 304 is threadedly connected to the threaded rod 305, and the lower end of the limiting column head 304 is provided with a limiting step 306, the lower end of the limiting step 306 is against the motor cover 301, and the height of the limiting step 306 is greater than or equal to the thickness of the locking hook 601. The table frame 2 is provided with a socket 201 for inserting the limiting studs 304 of the two sets of connecting posts 303. In this embodiment, the socket 201 is located at the bottom of the crossbeam 200. A sliding member 6 is slidably fitted within the table frame 2. The sliding member 6 includes two sliders 600 that slidably fit within the inner hole of the crossbeam 200. The two sliders 600 are connected by a connecting rod 604. Each slider 600 has a notch 602 for inserting the limiting stud 304 of the connecting post 303. A latch 603 is provided on the bottom wall of one side of the notch 602. The latch 603 forms the locking hook 601. The sliding member 6 is provided with at least one set of locking hooks 601. The wrench 5 is rotatably connected to the table frame 2 and is used to drive the sliding member 6 to slide, so that the locking hooks 601 on the sliding member 6 lock the at least one set of connecting posts 303 extending into the socket 201.The electric lifting table is connected to a group of connecting columns 303 at both ends of the motor cover 301, and a limit column head 304 is provided at the free end or upper end of each connecting column 303, that is, when the product leaves the factory, two groups of connecting columns 303 are pre-installed at both ends of the motor cover 301, and the user does not need to install the connecting columns again when assembling the product after purchasing it; a socket 201 is provided at the bottom of the table frame 2 for inserting the limit column heads 304 of the connecting columns 303, and a slidable sliding member 6 is provided in the table frame 2, and a locking hook 601 is provided on the sliding member 6 that can lock at least one group of connecting columns 303 inserted into the socket 201, that is, when the wrench 5 drives the sliding member 6 When moving, the locking hook 601 can hook the limiting column head 304 of the connecting column 303, thereby completing the installation of the lifting table leg 3 and the table frame 2; therefore, when assembling the lifting table legs and the table frame of the electric lifting table, it is only necessary to insert the connecting column of the motor housing of the lifting table leg into the socket at the bottom of the table frame from bottom to top, and then pull the wrench. The wrench drives the sliding member to slide, so that the locking hook of the sliding member hooks the limiting column head of the connecting column in the socket, and drives the connecting column to move slightly in the sliding direction of the sliding member, so that the lower end face of the limiting column head fits on the end face of the inner end of the socket. Under the locking action of the locking hook, the motor housing of the lifting table leg is connected to the table frame. During the assembly process of the lifting table legs and the table frame, no manual tools or installation screws are required. Only the wrench needs to be pulled to complete the connection and locking of the lifting table legs and the table frame. The operation is simple and convenient, and the lifting table legs can be quickly assembled. The user experience is good, and the connection between the lifting table legs and the table frame is firm and stable.

[0030] See again Figure 4 As shown, as an embodiment of the present invention, the wrench 5 is provided with an arc-shaped push portion 501 and a positioning slot 502 from the inside to the outside. The arc-shaped push portion 501 can squeeze the connecting rod 604 to slide the slider 6 when the wrench 5 rotates. When the locking hook 601 on the slider 6 locks the connecting column 303, the positioning slot 502 is engaged with the connecting rod 604, locking the position of the connecting rod 604. The two beams 200 are connected to two coaxial rotating shafts 500, and the wrench 5 is rotatably connected to the two rotating shafts 500. The two sliders 600 are respectively provided with a guide hole 605 extending along the sliding direction of the slider 600. The two rotating shafts 500 are loosely fitted in the two guide holes 605. The arc-shaped push portion 501 is an arc-shaped push portion with a lower outer side and a higher inner side. When the wrench 5 is rotated upward, the arc-shaped pushing portion 501 presses the connecting rod 604 outward, causing the connecting rod 604 and the slider 600 to slide in the inner hole of the crossbeam 200. The locking hook 601 on the slider 600 engages the connecting post 303 between the limiting post 304 and the motor housing 301, that is, the limiting step 306, so that the limiting post 304 of the connecting post 303 is retained in the insertion hole 201. In addition, the sliding fit between the rotating shaft 500 and the guide hole 605 makes the sliding of the slider more stable and smooth.

[0031] See again Figure 4 As shown, as an embodiment of the present invention, the socket 201 includes a first socket 202 and a second socket 203 that are interconnected, the aperture size of the first socket 202 is larger than the aperture size of the second socket 203, and the first socket 202 and the second socket 203 are distributed in sequence along the locking direction of the sliding member 6; the aperture size of the first socket 202 is larger than the outer diameter size of the limiting column head 304, and the aperture size of the second socket 203 is smaller than the outer diameter size of the limiting column head 304. That is, the socket 201 is a gourd hole. When the limiting column head 304 of the connecting column 303 is inserted into the socket 201, the wrench 5 drives the sliding member 6 to slide, so that the locking hook 601 of the sliding member 6 hooks the limiting column head 304 of the connecting column 303 in the socket 201, and drives the connecting column 303 to move slightly in the sliding direction of the sliding member 6, so that the connecting column 303 is placed in the second socket 203 with a smaller aperture size. When the positioning slot 502 of the wrench is clamped on the connecting rod 604, the limiting column head 304 of the connecting column 303 is locked by the locking hook 601.

[0032] See again Figure 4 As shown in FIG. 1 , as an embodiment of the present invention, two elongated holes 204 are symmetrically provided on the opposing inner sidewalls of the two crossbeams 200, and the connecting rod 604 is loosely fitted within the two elongated holes 204. The matching arrangement of the connecting rod 604 and the two elongated holes 204 allows for smoother sliding of the sliding member. To remove the lift table leg, the user simply pulls a wrench to disengage the positioning slot 502 from the connecting rod 604, then manually pushes the connecting rod 604 in the opposite direction, thereby disengaging the locking hook 601 from the connecting post, and the lift table leg can be removed.

[0033] See also Figure 6 As shown in FIG. 1 , as another embodiment of the present invention, the sliding member 6 is provided with two sets of locking hooks 601, which are sequentially distributed along the length of the sliding member 6. The two sets of locking hooks 601 are arranged corresponding to the two sets of connecting posts 303 on the motor housing 301, and are used to lock the two sets of connecting posts 303 extending into the sockets 201. The two sets of locking hooks 601 on the sliding member 6 respectively lock the two sets of connecting posts 303 on the motor housing 301, thereby making the connection between the lifting table legs and the table frame more stable and secure. The other technical solutions of this embodiment are the same as those of the above embodiment.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An electric lift table, comprising A table top and a table frame connected to the bottom of the table top, wherein the table frame includes two parallel hollow beams; Two lifting table legs are respectively arranged on both sides of the bottom of the table frame. Each lifting table leg includes a lifting column, a drive motor and a motor cover connected to the top of the lifting column; the characteristics are: The two ends of the motor housing are respectively connected to a group of protruding connecting columns, and the free end of each connecting column is provided with a limiting column head with an outer diameter larger than the outer diameter of the connecting column, and the table frame is provided with a socket for plugging the limiting column heads of the two groups of connecting columns; A sliding member is slidably fitted in the table frame, and is provided with at least one set of locking hooks. The sliding member includes two sliders that are slidably fitted in the inner hole of the crossbeam, each of the sliders is provided with a notch for inserting the limiting column head of the connecting column, and a bayonet is provided on the bottom wall on one side of the notch, the bayonet forming the locking hook, and the two sliders are connected by a connecting rod; The wrench is rotatably connected to the table frame and is used to drive the sliding part to slide so that the locking hook on the sliding part locks at least one group of connecting columns extending into the socket; the wrench is provided with an arc-shaped pushing part and a positioning groove from the inside to the outside, and the arc-shaped pushing part can squeeze the connecting rod to make the sliding part slide when the wrench is rotated. When the locking hook on the sliding part locks the connecting column, the positioning groove is clamped on the connecting rod to lock the position of the connecting rod.

2. The electric lift table according to claim 1, characterized in that: The socket is arranged at the bottom of the beam.

3. The electric lift table according to claim 1, characterized in that: The socket includes a first socket and a second socket that are interconnected, the aperture size of the first socket is larger than the aperture size of the second socket, and the first socket and the second socket are distributed in sequence along the locking direction of the sliding part; the aperture size of the first socket is larger than the outer diameter size of the limiting column head, and the aperture size of the second socket is smaller than the outer diameter size of the limiting column head.

4. The electric lift table according to claim 1, characterized in that: Two coaxial rotating shafts are connected to the two beams, and the wrench is rotatably connected to the two rotating shafts. The two sliders are respectively provided with a guide hole extending along the sliding direction of the slider, and the two rotating shafts are loosely fitted in the two guide holes.

5. The electric lift table according to claim 4, characterized in that: Two elongated holes are symmetrically provided on the opposite inner side walls of the two cross beams, and the connecting rod is loosely fitted in the two elongated holes.

6. The electric lift table according to claim 1, characterized in that: The arc-shaped pushing portion is lower on the outside and higher on the inside.

7. The electric lift table according to claim 1, characterized in that: Two connecting holes are respectively provided at both ends of the motor cover, and the two connecting holes are located on both sides of the motor cover; the connecting column includes a threaded rod passing through the connecting hole from bottom to top, the limiting column head is threadedly connected to the threaded rod, and the lower end of the limiting column head is provided with a limiting step, the lower end of the limiting step is against the motor cover, and the height of the limiting step is greater than or equal to the thickness of the lock hook.

8. The electric lift table according to claim 1, characterized in that: The sliding member is provided with two sets of locking hooks, which are distributed in sequence along the length direction of the sliding member and are arranged corresponding to the two sets of connecting columns on the motor cover for locking the two sets of connecting columns extending into the sockets.

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