Electric lifting table

Abstract

The utility model discloses an electric lifting table which comprises a cross beam assembly, a supporting plate, a sliding piece, lifting table legs and a driving structure, two sets of inserting holes are formed in the bottom of the cross beam assembly in the length direction, the supporting plate is provided with a clamping hook inserted into the cross beam assembly, the sliding piece is connected into the cross beam assembly in a sliding mode, and a locking hook is arranged on the sliding piece; the two ends of a motor mounting plate of each lifting table leg are each connected with a set of outwards-protruding connecting columns, and the end of each connecting column is provided with a limiting column head. The two sets of connecting columns are inserted into the cross beam assembly through the two sets of inserting holes respectively, one set of connecting columns are connected with the clamping hooks in a clamped mode, and the other set of connecting columns correspond to the locking hooks in position. The driving structure is used for driving the sliding piece to slide, so that the lock hook is buckled with the corresponding connecting column and drives the motor mounting plate to move to the locking position, and the motor mounting plate and the supporting plate are locked and fixed to the cross beam assembly. The electric lifting table does not need tools, is simple and convenient to assemble, and can meet the requirement of a user for quick assembly.

Description

Technical Field

[0001] This application relates to the field of electric office furniture technology, specifically to an electric height-adjustable desk. Background Technology

[0002] A height-adjustable desk is an office desk that can be adjusted to suit different heights, sitting postures, and standing postures. It generally includes electric and manual height-adjustable desks. Taking an electric height-adjustable desk as an example, especially a dual-motor driven one, its structure includes a tabletop, base, crossbeam, and two height-adjustable legs. The tabletop is connected to the top of the crossbeam, and support plates connected to the tabletop are located at both ends of the crossbeam. Motor housings are connected to the top of the legs, and drive motors connected to the lead screw lifting mechanism inside the legs are installed within the motor housings. This type of electric height-adjustable desk uses a fixed connection between the motor housing and the crossbeam to install the legs. Specifically, multiple mounting holes are provided on both sides of the base plate of the motor housing, and multiple corresponding connection holes are provided on the crossbeam. Locking bolts are passed sequentially through the connection holes on the crossbeam and the mounting holes on the base plate of the motor housing to fix the motor housing to the crossbeam. However, installing the legs of this type of electric height-adjustable desk requires tightening multiple locking bolts with tools, making installation time-consuming and laborious, and failing to meet users' needs for quick assembly.

[0003] To achieve rapid assembly of the table legs, as described in the applicant's earlier Chinese patent application (publication number CN112021776A, entitled "Electric Adjustable Table"), a set of protruding connecting posts are connected to both sides of the motor housing's base plate. Each connecting post has a limiting post head at its free end, and the table frame has insertion holes for the limiting post heads of the two sets of connecting posts to be inserted. A sliding component is slidably fitted inside the table frame, and the sliding component has a locking hook. A drive structure linked to the sliding component is connected to the table frame. This drive structure drives the sliding component to slide, causing the locking hook on the sliding component to lock the connecting post extending into the insertion hole, thus securing the motor housing to the table frame. The drive structure includes a cam wrench rotatably connected to the table frame. When the cam wrench rotates, its cam portion pushes the sliding component to slide. When the cam wrench rotates to the locking position, the locking hook on the sliding component locks the connecting post on the motor housing.

[0004] The aforementioned electric height-adjustable desks have some shortcomings in actual assembly: after the sliding parts are slid and the locking hooks on the sliding parts lock the connecting columns on the motor housing to complete the installation of the desk legs, tools and screws are still needed to fasten the support plates to the desk frame or crossbeams, which results in slow assembly speed and laborious work, and still cannot meet the user's need for rapid assembly. Utility Model Content

[0005] The technical problem to be solved by this application is to overcome the defects of the above-mentioned related technologies and provide an electric height-adjustable table that does not require tools, is simple and convenient to assemble, and can meet the user's need for rapid assembly.

[0006] The technical solution of this application is to provide an electric height-adjustable desk with the following structure: including...

[0007] The crossbeam assembly has two sets of insertion holes at its bottom along the length direction that are connected to its interior.

[0008] The support plate has a plug portion that is inserted into the beam assembly from the end of the beam assembly, and the plug portion is provided with a hook;

[0009] A sliding member is slidably connected within the crossbeam assembly, and the sliding member is provided with a locking hook;

[0010] The adjustable table legs have a motor mounting plate connected to the top. Each end of the motor mounting plate is connected to a set of protruding connecting columns, and each connecting column has a limiting column head at its end. The two sets of connecting columns are inserted into the crossbeam assembly through two sets of insertion holes. One set of connecting columns is engaged with the hook, and the other set of connecting columns corresponds to the position of the locking hook.

[0011] The drive structure is connected to the crossbeam assembly and is driven to slide the sliding member, so that the locking hook engages with the corresponding connecting column and drives the motor mounting plate to move away from the support plate to the locking position, thereby locking the motor mounting plate and the support plate to the crossbeam assembly.

[0012] In some embodiments, the drive structure includes a traction member and a wrench rotatably connected to the crossbeam assembly. One end of the traction member is rotatably connected to the sliding member, and the other end is rotatably connected to the wrench. The wrench rotates between a locked position and a released position. When the wrench is rotated to the locked position, the traction member drives the sliding member to slide so that the motor mounting plate moves to the locked position.

[0013] In some embodiments, the beam assembly has a first guide hole along its length, a connecting rod connected to the sliding member is slidably connected in the first guide hole, and the traction member is rotatably connected to the connecting rod.

[0014] In some embodiments, the slider is provided with a second guide hole along its length, the crossbeam assembly is connected to a rotating shaft passing through the second guide hole, and the wrench is connected to the rotating shaft.

[0015] In some embodiments, the insertion hole includes a first hole and a second hole that are interconnected. The diameter of the first hole is larger than that of the second hole, and the first hole and the second hole are distributed sequentially in a direction away from the support plate. The diameter of the first hole is larger than the outer diameter of the limiting post head, and the diameter of the second hole is greater than or equal to the outer diameter of the connecting post and smaller than the outer diameter of the limiting post head. When the motor mounting plate moves to the locking position, the connecting post is located in the second hole.

[0016] In some embodiments, the beam assembly includes two spaced-apart and hollow beams, and two sets of the insertion holes are disposed at the bottom of the two beams; the slider includes two sliding rods that are respectively slidably engaged in the two beams, and the sliding rods are provided with notches with downward openings for the insertion of the limiting pin head of the connecting column, the notches forming the locking hook.

[0017] In some embodiments, the support plate is connected to two plug-in portions, and the two plug-in portions are respectively disposed opposite to the two crossbeams. The free end of each plug-in portion is provided with a hook, and the opening of the hook faces the support plate.

[0018] In some embodiments, each of the connecting posts is threaded onto the motor mounting plate.

[0019] In some embodiments, when the wrench is turned to the locking position, the bottom of the beam assembly is not exposed.

[0020] In summary, compared with related technologies, the electric height-adjustable desk proposed in this application has the following advantages: During the assembly of the table legs and support plate, the insertion part of the support plate is first inserted into the crossbeam assembly. Then, two sets of connecting posts on the motor mounting plate of the table legs are inserted into the crossbeam assembly from bottom to top through the insertion holes at the bottom of the crossbeam assembly. At this time, one set of connecting posts engages with the hooks on the insertion part of the support plate, and the other set of connecting posts corresponds to the locking hooks on the sliding parts. When the drive structure drives the sliding parts to slide, the locking hooks on the sliding parts engage with the corresponding connecting posts, causing the motor mounting plate to move away from the support plate to the locking position. Simultaneously, the motor mounting plate and the support plate are locked and fixed to the crossbeam assembly. That is, the electric height-adjustable desk completes the installation of the end support plate of the crossbeam assembly while installing the table legs, making the overall installation of the electric height-adjustable desk more convenient and faster. Furthermore, by using a drive structure to drive the sliding component to slide, the locking hook on the sliding component engages with a set of connecting posts on the motor mounting plate, causing the motor mounting plate to move and lock. At the same time, another set of connecting posts on the motor mounting plate engages with the hooks on the insertion part of the support plate, thus locking the support plate and the motor mounting plate simultaneously. Therefore, when installing the lifting table legs and support plate, no manual or power tools are required, making the assembly of the lifting table legs and support plate simpler, more convenient, faster, and more efficient, meeting the user's need for rapid assembly. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of an electric height-adjustable table according to some embodiments of this application.

[0022] Figure 2 This is a schematic diagram of the bottom structure of an electric height-adjustable table according to some embodiments of this application.

[0023] Figure 3 This is a cross-sectional structural schematic diagram of an electric height-adjustable table according to some embodiments of this application.

[0024] Figure 4 yes Figure 3 A magnified structural diagram of part A in the diagram.

[0025] Figure 5 This is a schematic diagram of the installation structure of the lifting legs of an electric height-adjustable table according to some embodiments of this application.

[0026] Figure 6 This is a schematic diagram of the installation of the lifting legs of an electric height-adjustable table from another angle according to some embodiments of this application.

[0027] Figure 7 This is a schematic diagram of the drive structure of an electric height-adjustable table according to some embodiments of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Crossbeam assembly, 100. Crossbeam, 101. First guide hole, 102. Insertion hole, 103. First hole, 104. Second hole, 2. Lifting table leg, 200. Motor mounting plate, 201. Connecting column, 202. Limiting column head, 3. Support plate, 300. Insertion part, 301. Hook, 4. Drive structure, 400. Wrench, 401. Traction component, 402. Rotating shaft, 5. Sliding component, 500. Sliding rod, 501. Locking hook, 502. Second guide hole, 503. Connecting rod. Detailed Implementation

[0030] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0031] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0032] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] See Figures 1 to 7As shown in the figure; this application discloses an electric height-adjustable desk, the structure of which includes a tabletop, a crossbeam assembly 1 and height-adjustable table legs 2. Specifically, in this embodiment, there are two height-adjustable table legs 2, which are respectively connected to both ends of the crossbeam assembly 1. The lower end of the height-adjustable table legs 2 is connected to a base. Each height-adjustable table leg 2 includes a table leg body and a motor mounting plate 200 connected to the top of the table leg body. A drive motor is connected inside the motor mounting plate 200. The table leg body is composed of multiple nested tubes. A linear drive mechanism is connected inside the table leg body. The input end of the linear drive mechanism is connected to the output end of the drive motor. The electric height-adjustable desk also includes two support plates 3 respectively connected to both ends of the crossbeam assembly 1. The support plates 3 are connected to the bottom of the tabletop and are used to support the tabletop, making the tabletop connection more stable.

[0035] The linear drive mechanism in this embodiment is a product component of existing mature technology, also known as a lead screw and nut pair; the extension and retraction of the linear drive mechanism can drive the table leg body tube to expand or contract, so under the drive of the drive motor, the table leg body can be extended and retracted through the linear drive mechanism; in this embodiment, the electric lifting table is actually a dual-motor driven electric lifting table.

[0036] It is easy to understand that, in order to facilitate users to assemble the electric height-adjustable desk themselves after purchase, the tabletop, crossbeam assembly 1, support plate 3, height-adjustable table legs 2, and base of the electric height-adjustable desk are all independent components. That is, the tabletop, crossbeam assembly 1, support plate 3, height-adjustable table legs 2, and base of the electric height-adjustable desk are formed as independent installation modules when the product leaves the factory, and each module does not require user assembly.

[0037] In this embodiment, the crossbeam assembly 1 includes two parallel and spaced-apart crossbeams 100, forming a fixed installation space between them. At least partially, the drive motor on the motor mounting plate 200 at the top of the table leg body is housed within this installation space. The motor mounting plate 200 abuts against the bottom of the crossbeam assembly 1 to provide support. To facilitate the connection between the lifting table leg 2, the support plate 3, and the crossbeam assembly 1, and to ensure that no fasteners such as screws, bolts, or screws are used during the entire installation process, and that no manual or power tools are required; see [link to previous section]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the bottom of the crossbeam assembly 1 has two sets of insertion holes 102 connected to its interior along the length direction; and the support plate 3 has an insertion part 300 that can be inserted into the crossbeam assembly 1 from the end of the crossbeam assembly 1. The insertion part 300 is provided with a hook 301. When the insertion part 300 of the support plate 3 is inserted into the crossbeam assembly 1 horizontally through the end of the crossbeam assembly 1, the hook 301 on the insertion part 300 corresponds to a set of insertion holes 102 near the bottom of the crossbeam assembly 1 near the support plate 3; a sliding member 5 is slidably connected inside the crossbeam assembly 1 along the length direction of the crossbeam assembly 1. The sliding member 5 is provided with a locking hook 501; further, in this embodiment, the two ends of the motor mounting plate 200 at the top of the lifting table leg 2 are respectively connected to a set of outwardly protruding connecting posts 201 arranged in the vertical direction. The end of each connecting post 201 is provided with a limiting post head 202. The outer diameter of the limiting post head 202 is larger than that of the connecting post head 201. The outer diameter of column 201; two sets of connecting columns 201 are respectively inserted into the crossbeam assembly 1 through two sets of insertion holes 102. One set of connecting columns 201 is engaged with hook 301, and the other set of connecting columns 201 is positioned with locking hook 501. That is, when installing the lifting table leg 2 and the support plate 3, first insert the insertion part 300 of the support plate 3 into the crossbeam assembly 1 from the end of the crossbeam assembly 1. The hook 301 on the insertion part 300 corresponds to a set of insertion holes 102 at the bottom of the crossbeam assembly 1 and close to the support plate 3. Then, insert the two sets of connecting columns 201 on the motor mounting plate 200 of the lifting table leg 2 into the crossbeam assembly 1 from bottom to top through two sets of insertion holes 102 at the bottom of the crossbeam assembly 1. At this time, one set of connecting columns 201 is engaged with the hook 301 on the insertion part 300 of the support plate 3, and the other set of connecting columns 201 is positioned with locking hook 501 on the sliding part 5. In this embodiment, a drive structure 4 is connected to the crossbeam assembly 1. The drive structure 4 is connected to the sliding member 5 for transmission and is used to drive the sliding member 5 to slide, so that the locking hook 501 on the sliding member 5 engages with the corresponding connecting post 201 and drives the motor mounting plate 200 to move away from the support plate 3 to the locking position, so as to lock and fix the motor mounting plate 200 and the support plate 3 on the crossbeam assembly 1.

[0038] For example, see Figure 5 , Figure 6 and Figure 7As shown, two sets of insertion holes 102 are provided along the length direction at the bottom of the two hollow crossbeams 100 of the crossbeam assembly 1. The two insertion holes 102 of the first set are located near the support plate 3 of the crossbeam assembly 1, and the two insertion holes 102 of the second set are located away from the support plate 3 of the crossbeam assembly 1. Two vertically arranged and upwardly protruding connecting posts 201 are respectively connected to both ends of the motor mounting plate 200. Each connecting post 201 has a limiting post head 202 at its upper end. Two horizontally arranged and parallel insertion parts 300 are provided on one side of the support plate 3. The free end of each insertion part 300 has A hook 301 with an opening facing the support plate 3 is provided. During installation, the two insertion parts 300 of the support plate 3 are first inserted into the two crossbeams 100 of the crossbeam assembly 1 through the ends of the crossbeam assembly 1. At this time, the hook 301 on the insertion part 300 of the support plate 3 is located at the first set of insertion holes. Then, the four connecting posts 201 at both ends of the motor mounting plate 200 pass through the four insertion holes 102 at the bottom of the crossbeam assembly 1 from bottom to top. The set of connecting posts 201 near the support plate 3 engages with the hook 301 of the insertion part 300, and the other set of connecting posts 201 corresponds to the two locking hooks 501 on the sliding member 5.

[0039] Understandably, the sliding member 5 slides under the drive of the drive structure 4 and engages the locking hook 501 with the connecting post 201 corresponding to the locking hook 501. As the sliding member 5 continues to slide, it drives the motor mounting plate 200 to move away from the support plate 3 through the connecting post 201. At the same time, another set of connecting posts 201 on the motor mounting plate 200 cooperates with the hook 301 on the insertion part 300 of the support plate 3 to tighten the support plate 3 until the motor mounting plate 200 moves to the locking position. At this time, under the cooperation of the locking hook 501 and the hook 301, the two sets of connecting posts 201 on the motor mounting plate 200 are locked, thereby realizing the installation of the lifting table leg 2 and the support plate 3. Specifically in this embodiment, when the connecting post 201 on the motor mounting plate 200 moves to abut against the inner wall of the insertion hole 102 under the action of the locking hook 501, or when the connecting post 201 on the motor mounting plate 200 drives the insertion part 300 on the support plate 3 to move to abut against the end of the support plate 3 and the crossbeam 100, the motor mounting plate 200 is in the locked position.

[0040] In this embodiment, the electric lifting table completes the installation of the end support plate 3 of the crossbeam assembly 1 simultaneously with the installation of the lifting table legs 2, making the overall installation of the electric lifting table more convenient and faster. Furthermore, by using the drive structure 4 to drive the sliding member 5 to slide, when the locking hook 501 on the sliding member 5 engages with a set of connecting posts 201 on the motor mounting plate 200 and drives the motor mounting plate 200 to move and lock, another set of connecting posts 201 on the motor mounting plate 200 engages with the hook 301 on the insertion part 300 of the support plate 3 and locks it in place. This simultaneously locks the support plate 3 and the motor mounting plate 200. Therefore, when installing the lifting table legs 2 and the support plate 3, no manual or electric tools are required, making the assembly of the lifting table legs 2 and the support plate 3 simpler, more convenient, and faster, with high installation efficiency, meeting the user's need for rapid assembly.

[0041] It is understandable that the locking force of the connecting post 201 on the motor mounting plate 200 is largely determined by the sliding displacement of the sliding member 5. That is, the greater the displacement of the sliding member 5 when the locking hook 501 engages with the connecting post 201 and drives the motor mounting plate 200 to move away from the support plate 3, the greater the locking force of the connecting post 201 and the support plate 3, and vice versa. Therefore, in this embodiment, in order to increase the sliding stroke of the sliding member 5 when the locking hook 501 engages with the connecting post 201 and drives the motor mounting plate 200 to slide, the drive structure 4 includes a traction member 401 and a wrench 400 rotatably connected to the crossbeam assembly 1. One end of the traction member 401 is rotatably connected to the sliding member 5, and the other end is rotatably connected to the wrench 400. The wrench 400 rotates between the locking position and the releasing position. When the wrench 400 rotates to the locking position, the traction member 401 drives the sliding member 5 to slide so that the motor mounting plate 200 moves to the locking position. See details. Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, a rotating shaft 402 is connected to the crossbeam assembly 1, and a wrench 400 is connected to the rotating shaft 402. The wrench 400 can rotate around the circumference of the rotating shaft 402. A connecting hole is provided at a position of the wrench 400 off the rotating shaft 402. This connecting hole is rotatably connected to one end of the traction member 401, and the other end of the traction member 401 is rotatably connected to the sliding member 5. When the wrench 400 rotates past its limit position, the wrench 400 is in a self-locking state. At this time, the wrench 400 is in a locked position. When the wrench 400 rotates in the opposite direction past its limit position, the wrench 400 rotates from the self-locking state to the released state. During the rotation of the wrench 400, the sliding member 5 can be driven to slide within the crossbeam assembly 1 through the traction member 401. Specifically, when the wrench 400 rotates past its limit position, the sliding member 5 can be driven to slide within the crossbeam assembly 1. When the lever 400 rotates away from the support plate 3, it drives the sliding member 5 to slide away from the support plate 3. After the locking hook 501 of the sliding member 5 engages with the corresponding connecting post 201 on the motor mounting plate 200, the connecting post 201 drives the motor mounting plate 200 to slide synchronously with the sliding member 5. This causes the connecting post 201 on the motor mounting plate 200, which engages with the hook 301, to lock together until the lever 400 rotates to the locking position. The lever 400 self-locks, and the locking hook 501 of the sliding member 5 locks one set of connecting posts 201. The other set of connecting posts 201 engages with the hook 301 to lock the support plate 3 onto the crossbeam assembly 1. Thus, the lifting table leg 2 and the support plate 3 are locked simultaneously. The drive structure 4, composed of the lever 400 and the traction member 401, allows the sliding member 5 to have a large stroke or displacement when locking the connecting post 201, resulting in a large locking force between the lifting table leg and the support plate and better connection stability.

[0042] Further in this embodiment, see Figure 7 As shown, the sliding member 5 includes two sliding rods 500 that are slidably fitted within the two crossbeams 100. Each sliding rod 500 has a square notch with an opening facing downwards, allowing the limiting head 202 of the connecting post 201 to be inserted. The notch forms a locking hook 501. The crossbeam assembly 1 has a first guide hole 101 along its length. A connecting rod 503 is slidably connected within the first guide hole 101, and both ends of the connecting rod 503 are connected to the sliding rods 500 within the two crossbeams 100. The traction member 401 consists of two arc-shaped plates, each rotatably connected to the connecting rod. When the wrench 400 rotates, the two sliding rods 500 of the sliding member 5 move through the traction member 401 and the connecting rod. The guiding fit between the connecting rod and the first guide hole 101 makes the sliding of the sliding member 5 smoother.

[0043] The slider 5 consists of two elongated sliding rods 500. In order to further improve the smoothness of sliding of the slider 5, in this embodiment, each of the two sliding rods 500 of the slider 5 is provided with a second guide hole 502 along the length direction. The rotating shaft 402 of the wrench 400 passes through the two second guide holes 502. The guiding cooperation between the second guide holes 502 and the rotating shaft 402 further improves the smoothness of sliding of the two sliding rods 500, prevents the sliding rods 500 from deviating during the sliding process, or avoids the sliding rods 500 from tilting with one end higher than the other.

[0044] Further in this embodiment, see Figure 6 As shown, the insertion hole 102 includes a first hole 103 and a second hole 104 that are interconnected. The diameter of the first hole 103 is larger than that of the second hole 104, and the first hole 103 and the second hole 104 are distributed sequentially in a direction away from the support plate 3. The diameter of the first hole 103 is larger than the outer diameter of the limiting post head 202, and the diameter of the second hole 104 is greater than or equal to the outer diameter of the connecting post 201 and smaller than the outer diameter of the limiting post head 202. When the motor mounting plate 200 moves to the locking position, the connecting post 201 is located in the second hole 104. In this embodiment, the insertion hole 102 at the bottom of the crossbeam assembly 1 is a gourd hole. The diameter of the first hole 103 is larger than that of the second hole 104. The first hole 103 allows the connecting column 201 with the limiting column head 202 to be easily inserted into the crossbeam 100. Under the drive of the wrench 400, the sliding member 5 drives the connecting column 201 to move the motor mounting plate 200, so that the connecting column 201 moves from the first hole 103 to the second hole 104. When the motor mounting plate 200 is in the locked position, the connecting column 201 is limited in the first hole 103 in both the horizontal and vertical directions, thereby making the connection between the lifting table leg 2 and the support plate 3 and the crossbeam assembly 1 more firm and stable.

[0045] In some embodiments, the connecting post 201 is threaded onto the motor mounting plate 200. The connecting post 201 is pre-fixed onto the motor mounting plate 200 at the factory. Fixing the connecting post 201 onto the motor mounting plate 200 is simple and convenient; it only requires tightening. Furthermore, the height of the limiting post head 202 can be adjusted by rotating the connecting post 201, thereby making the engagement between the hook 301 or locking hook 501 and the connecting post 201 more stable.

[0046] In some embodiments, when the wrench 400 is rotated to the locked position, the bottom of the wrench 400 is not exposed to the crossbeam assembly 1. That is, when the wrench 400 is rotated past its limit position and is in a self-locking state, the bottom of the wrench 400 is not exposed to the bottom of the crossbeam assembly 1, so that the wrench 400 is in a hidden state, avoiding accidental operation that could cause the wrench 400 to be rotated open, thus ensuring good safety.

[0047] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0048] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electric height-adjustable desk, characterized in that: include The crossbeam assembly has two sets of insertion holes at its bottom along the length direction that are connected to its interior. The support plate has a plug portion that is inserted into the beam assembly from the end of the beam assembly, and the plug portion is provided with a hook; A sliding member is slidably connected within the crossbeam assembly, and the sliding member is provided with a locking hook; The adjustable table legs have a motor mounting plate connected to the top. Each end of the motor mounting plate is connected to a set of protruding connecting columns, and each connecting column has a limiting column head at its end. The two sets of connecting columns are inserted into the crossbeam assembly through two sets of insertion holes. One set of connecting columns is engaged with the hook, and the other set of connecting columns corresponds to the position of the locking hook. The drive structure is connected to the crossbeam assembly and is driven to slide the sliding member, so that the locking hook engages with the corresponding connecting column and drives the motor mounting plate to move away from the support plate to the locking position, thereby locking the motor mounting plate and the support plate to the crossbeam assembly.

2. The electric height-adjustable desk according to claim 1, characterized in that: The drive structure includes a traction member and a wrench rotatably connected to the crossbeam assembly. One end of the traction member is rotatably connected to the sliding member, and the other end is rotatably connected to the wrench. The wrench rotates between a locked position and a released position. When the wrench is rotated to the locked position, the traction member drives the sliding member to slide so that the motor mounting plate moves to the locked position.

3. The electric height-adjustable desk according to claim 2, characterized in that: The crossbeam assembly has a first guide hole along its length, and a connecting rod connected to the sliding member is slidably connected in the first guide hole. The traction member is rotatably connected to the connecting rod.

4. The electric height-adjustable desk according to claim 3, characterized in that: The slider is provided with a second guide hole along its length, and a rotating shaft passing through the second guide hole is connected to the crossbeam assembly. The wrench is connected to the rotating shaft.

5. The electric height-adjustable desk according to claim 2, characterized in that: The insertion hole includes a first hole and a second hole that are interconnected. The diameter of the first hole is larger than that of the second hole, and the first hole and the second hole are distributed sequentially in a direction away from the support plate. The diameter of the first hole is larger than the outer diameter of the limiting post head, and the diameter of the second hole is greater than or equal to the outer diameter of the connecting post and smaller than the outer diameter of the limiting post head. When the motor mounting plate moves to the locking position, the connecting post is located in the second hole.

6. The electric height-adjustable desk according to claim 1, characterized in that: The crossbeam assembly includes two spaced-apart and hollow crossbeams, and two sets of the insertion holes are provided at the bottom of the two crossbeams; the sliding member includes two sliding rods that are respectively slidably engaged in the two crossbeams, and the sliding rods are provided with notches with downward openings for the insertion of the limiting pin head of the connecting column, the notches forming the locking hook.

7. The electric height-adjustable desk according to claim 6, characterized in that: The support plate is connected to two plug-in parts, and the two plug-in parts are respectively arranged to correspond to the two crossbeams. The free end of each plug-in part is provided with a hook, and the opening of the hook faces the support plate.

8. The electric height-adjustable desk according to claim 1, characterized in that: Each of the connecting posts is threaded onto the motor mounting plate.

9. The electric height-adjustable desk according to claim 2, characterized in that: When the wrench is turned to the locked position, the wrench does not protrude from the bottom of the crossbeam assembly.

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