A lifting work platform

Abstract

This invention discloses a lifting worktable, including a work platform, a base, a locking mechanism, and a lifting assembly. The lifting assembly includes at least one set of lifting arms, each set of lifting arms including at least two support arms hinged in the middle in an X-shape: a first support arm and a second support arm. The lifting assembly also includes a first rotating bracket and a second rotating bracket. The first rotating bracket includes two first rotating arms and two first traction arms that simultaneously fold towards the center or simultaneously unfold to both sides, with the two first traction arms respectively connected to the two first rotating arms. The second rotating bracket includes two second rotating arms and two second traction arms that simultaneously fold towards the center or simultaneously unfold to both sides, with the two second traction arms respectively connected to the two second rotating arms. When the lifting worktable is raised or lowered, the center of gravity of the supporting lifting arm remains relatively unchanged with respect to the center of gravity of the load on the work platform, avoiding tipping over, providing good support stability, and having a large lifting stroke, allowing it to be used on the ground.

Description

Technical Field

[0001] This application relates to the field of computer-supported equipment technology, specifically a lifting worktable. Background Technology

[0002] The related technology refers to a height-adjustable worktable for supporting tablet computers, also known as a desktop worktable, height-adjustable work desk, or desktop computer stand. It is generally placed on a desktop or tabletop. When in use, the height can be adjusted to meet the needs of users who work standing up or alternating between standing and sitting for a healthy work style.

[0003] Related lifting worktables, such as the lifting worktable in patent application CN105901942A, generally include a base, a work platform, and an X-shaped lifting arm disposed between the base and the work platform. The lifting arm includes two X-shaped support rods hinged in the middle: a first support rod and a second support rod. The upper end of the first support rod is rotatably connected to the work platform, and the lower end of the first support rod is slidably fitted on the base. The lower end of the second support rod is rotatably connected to the base, and the upper end of the second support rod is slidably fitted on the work platform. The lifting worktable also includes a power element, which is generally a gas spring. One end of the gas spring is connected to the work platform, and the other end of the gas spring is connected to the lifting arm. The gas spring is used to provide the lifting force for the work platform to rise and to offset or partially offset the load of the work platform.

[0004] During actual use, the inventors discovered the following defects in the aforementioned lifting work platform: The first and second supports of the X-shaped lifting arm are hinged at the middle by a hinge pin. When the work platform rises or falls relative to the base, the lower end of the first support and the upper end of the second support simultaneously slide to one side of the lifting work platform. This causes the center of gravity of the lifting arm to deviate from the center of gravity of the work platform's load, easily leading to tipping over and posing a safety hazard. Furthermore, the lifting stroke of this technology is small, making it unsuitable for ground-based use. Summary of the Invention

[0005] The technical problem to be solved by this application is to overcome the defects of the above-mentioned related technologies and provide a lifting work platform in which the center of gravity of the lifting arm and the center of gravity of the load of the work platform remain relatively unchanged during lifting, thus avoiding tipping over, providing good support stability, and having a large lifting stroke, and can be used on the ground.

[0006] The technical solution of this application is to provide a lifting worktable having the following structure: it includes...

[0007] Work platform;

[0008] Base; and

[0009] A lifting assembly for adjusting the height of the work platform relative to the base, the lifting assembly including at least one set of lifting arms, each set of lifting arms including at least two support arms hinged in the middle in an X-shape: a first support arm and a second support arm; the lifting assembly also includes

[0010] A first rotating support includes two first rotating arms, the upper ends of which are rotatably connected to a work platform, and the lower ends of which are rotatably connected to the upper ends of a first support arm and a second support arm, respectively. The first rotating support also includes two first traction arms disposed between the two first rotating arms and simultaneously folded towards the center or simultaneously unfolded to both sides. The two first traction arms are respectively connected to the two first rotating arms to ensure that the two first rotating arms always rotate synchronously.

[0011] The second rotating support includes two second rotating arms, the upper ends of which are rotatably connected to the lower ends of the first and second supports, respectively, and the lower ends of which are rotatably connected to the base. The second rotating support also includes two second traction arms disposed between the two second rotating arms and simultaneously folded towards the center or simultaneously unfolded to both sides. The two second traction arms are respectively connected to the two second rotating arms to ensure that the two second rotating arms always rotate synchronously. The lifting worktable also includes...

[0012] A locking mechanism, attached to the work platform and / or base, is used to lock the work platform at any height of its travel.

[0013] In some embodiments, a first elastic element is connected between the two first rotating arms and the upper ends of the two support arms, and the first elastic element causes the first rotating arm to always have a tendency to rotate and unfold relative to the support arm; or / and a second elastic element is connected between the two second rotating arms and the lower ends of the two support arms, and the second elastic element causes the second rotating arm to always have a tendency to rotate and unfold relative to the support arm.

[0014] In some embodiments, the first rotating bracket includes a first rotating member rotatably connected to the working platform, with both ends of the first rotating member rotatably connected to two first traction arms respectively; when the working platform rises and the upper ends of the two supporting arms move toward each other, the two supporting arms, in conjunction with the two first traction arms, fold toward the center and cause the first rotating member to rotate around its rotation center in a first direction; when the working platform descends and the upper ends of the two supporting arms move away from each other, the two supporting arms, in conjunction with the two first traction arms, unfold to both sides and cause the first rotating member to rotate around its rotation center in a second direction; the first direction and the second direction are opposite.

[0015] In some embodiments, the second rotating bracket includes a second rotating member rotatably connected to the base, with both ends of the second rotating member rotatably connected to two second traction arms respectively; when the work platform rises and the lower ends of the two support arms move toward each other, the two support arms, in conjunction with the two second traction arms, fold toward the center and cause the second rotating member to rotate around its rotation center in a first direction; when the work platform descends and the lower ends of the two support arms move away from each other, the two support arms, in conjunction with the two second traction arms, unfold to both sides and cause the second rotating member to rotate around its rotation center in a second direction; the first direction and the second direction are opposite.

[0016] In some embodiments, a rotating plate is rotatably connected to the bottom of the working platform, and the first rotating member is connected to the rotating plate and can rotate synchronously with the rotating plate; the rotating plate is provided with at least one arc-shaped part, and the arc-shaped part is provided with multiple positioning notches distributed in the circumferential direction; a sliding member is slidably fitted on the working platform, and a positioning pin is connected to the sliding member that can be engaged or disengaged from the positioning notch.

[0017] In some embodiments, there are two arc-shaped portions, and the opening directions of the positioning notches on the two arc-shaped portions are located on the same side of the rotating plate; the sliding member is connected to two positioning pins that respectively engage with the positioning notches on the two arc-shaped portions; an elastic body is connected between the sliding member and the working platform, and the elastic body makes the positioning pins of the sliding member always have a tendency to engage with the positioning notches.

[0018] In some embodiments, the two first traction arms are universally connected to the first rotating member, and the two second traction arms are universally connected to the second rotating member.

[0019] In some embodiments, the vertical projections of the two first rotating arms of the first rotating bracket and the rotating connection points of the working platform and the two second rotating arms of the second rotating bracket and the rotating connection points of the base coincide.

[0020] In some embodiments, a first drive arm connected to the two first traction arms is respectively connected to the upper shaft of the two first rotating arms, and the first drive arm and the first rotating arm form a triangular support structure; and a second drive arm connected to the two second traction arms is respectively connected to the lower shaft of the two second rotating arms, and the second drive arm and the second rotating arm form a triangular support structure.

[0021] In some embodiments, a keyboard tray for placing a computer keyboard is connected to the side of the work platform closest to the user.

[0022] In summary, the lifting worktable proposed in this application has the following advantages compared with related technologies:

[0023] First, the two arms of the lifting arm of the lifting platform are hinged in the middle in an X shape. When the work platform rises or falls, the first and second arms move in a scissor-like motion around their rotation center, thereby linking the two first rotating arms of the first rotating bracket and the two second rotating arms of the second rotating bracket to rotate and unfold or fold. The lifting assembly of the lifting platform is equipped with rotating brackets at both the upper and lower ends of the lifting arm. The setting of the two rotating brackets allows the lifting assembly to place the work platform at a higher height when it is unfolded. In other words, the lifting platform of the lifting platform has a large lifting stroke and can be used on the ground.

[0024] Furthermore, during the lifting and lowering of the work platform, the rotation connection points between the first rotating bracket and the work platform, as well as the rotation connection points between the second rotating bracket and the base, remain unchanged. This ensures that the center of gravity of the lifting arm and the center of gravity of the work platform load remain relatively constant throughout the entire height adjustment range of the lifting work platform, or that the center of gravity of the lifting arm and the center of gravity of the work platform load are always on the same vertical line, or that the center of gravity of the lifting arm and the center of gravity of the work platform load coincide and do not shift relative to each other. This results in good support stability of the lifting work platform, avoids tipping over, and ensures high safety.

[0025] In addition, the two first traction arms ensure that the two first rotating arms rotate synchronously at all times, and the two second traction arms ensure that the two second rotating arms rotate synchronously at all times. Therefore, during the lifting and lowering of the work platform, the rotation angles of the two first rotating arms and the two second rotating arms are always the same, which ensures that the work platform remains horizontal and does not tilt during the lifting and lowering process. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of a lifting worktable according to some embodiments of this application.

[0027] Figure 2 This is a side view of a lifting worktable according to some embodiments of this application.

[0028] Figure 3 This is a schematic diagram of another angle of a lifting worktable according to some embodiments of this application.

[0029] Figure 4 This is a schematic diagram of the bottom structure of a lifting worktable according to some embodiments of this application.

[0030] Figure 5 This is a cross-sectional structural diagram of a lifting work platform according to some embodiments of this application.

[0031] Figure 6This is a schematic diagram of the base structure of a lifting worktable according to some embodiments of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Working platform; 100. Crossbar; 101. Guide hole; 2. Base; 3. Lifting assembly; 300. Lifting arm; 301. First support arm; 302. Second support arm; 4. First rotating bracket; 400. First rotating arm; 401. First traction arm; 402. First rotating component; 403. First drive arm; 404. Rotating plate; 405. Arc-shaped part; 406. Positioning notch; 407. Sliding component; 408. Positioning pin; 5. Second rotating bracket; 500. Second rotating arm; 501. Second traction arm; 502. Second rotating component; 503. Second drive arm; 6. First elastic component; 600. Second elastic component. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] 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.

[0037] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0038] See Figures 1-6As shown in the figure, this application discloses a lifting worktable, also known as a desktop worktable or desktop lifting table. Its structure includes a work platform 1, a base 2, and a lifting assembly 3 that connects the work platform 1 and the base 2 for adjusting the height of the work platform 1 relative to the base 2. The work platform 1 is also known as an upper platform, tabletop, or storage panel, and the base 2 is also known as a lower platform or base frame. The base 2 is placed on a desktop, tabletop, or ground surface in the prior art.

[0039] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the lifting assembly 3 includes at least one set of lifting arms 300, and each set of lifting arms 300 includes at least two support arms that are hinged in the middle in an X shape: a first support arm 301 and a second support arm 302; when the height of the work platform 1 is adjusted relative to the base 2, the two support arms make a scissor-like movement, so that the upper ends of the two support arms move towards each other or move away from each other at the same time, and the lower ends of the two support arms move towards each other or move away from each other at the same time; that is, during the lifting process of the lifting work platform, the upper and lower ends of the two support arms simultaneously retract towards the center or simultaneously extend to both sides.

[0040] For example, in this embodiment, the lifting arm 300 is a set, that is, the lifting arm 300 includes a first arm 301 and a second arm 302 that are crossed in an X shape, and the first arm 301 and the second arm 302 are hinged at the middle position by a rotating shaft or a hinge pin, etc. In other embodiments, the number of the first arm 301 and the second arm 302 of the lifting arm 300 can also be two, three, etc. Similarly, in other embodiments, the lifting arm 300 can also be multiple sets, which are set according to the needs or the size of the working platform 1.

[0041] Further in this embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the lifting assembly 3 also includes a first rotating bracket 4 and a second rotating bracket 5. The first rotating bracket 4 is disposed between the work platform 1 and the lifting arm 300, and the second rotating bracket 5 is disposed between the lifting arm 300 and the base 2. The addition of the first rotating bracket 4 and the second rotating bracket 5 to the lifting assembly 3 allows the work platform 1 to be raised to a higher height compared to the structure with only the lifting arm 300, which increases the stroke of the work platform 1 and allows the lifting work platform to be used on the ground.

[0042] Specifically, in this embodiment, the first rotating bracket 4 includes two first rotating arms 400. The upper shafts of the two first rotating arms 400 are rotatably connected to the working platform 1, and the lower ends of the two first rotating arms 400 are rotatably connected to the upper ends of the first support arm 301 and the second support arm 302, respectively. The first rotating bracket 4 also includes two first traction arms 401 disposed between the two first rotating arms 400 and simultaneously folded towards the center or simultaneously unfolded to both sides. The two first traction arms 401 are respectively connected to the two first rotating arms 400 to keep the two first rotating arms 400 always in a fixed position. Synchronous rotation; further, the second rotating bracket 5 includes two second rotating arms 500, the upper ends of which are rotatably connected to the lower ends of the first arm 301 and the second arm 302, respectively, and the lower ends of which are rotatably connected to the base 2, respectively; the second rotating bracket 5 also includes two second traction arms 501 disposed between the two second rotating arms 500 and simultaneously folded towards the center or simultaneously unfolded to both sides, the two second traction arms 501 being connected to the two second rotating arms 500 respectively, for keeping the two second rotating arms 500 rotating synchronously at all times. In this embodiment, the arrangement of the two first traction arms 401 ensures that the two first rotating arms 400 rotate synchronously at all times, and the arrangement of the two second traction arms 501 ensures that the two second rotating arms 500 rotate synchronously at all times; therefore, during the lifting and lowering process of the work platform 1, the rotation angles of the two first rotating arms 400 and the two second rotating arms 500 are always the same, thus ensuring that the work platform 1 remains horizontal and does not tilt during the lifting and lowering process.

[0043] In the above embodiment, during the lifting and lowering process of the work platform 1, the rotation connection point between the first rotating bracket 4 and the work platform 1 and the rotation connection point between the second rotating bracket 5 and the base 2 remain unchanged. This ensures that the center of gravity of the lifting arm 300 and the center of gravity of the load of the work platform 1 remain relatively constant throughout the entire height adjustment range of the lifting work platform, or the center of gravity of the lifting arm 300 and the center of gravity of the load of the work platform 1 are always kept on the same vertical line, or the center of gravity of the lifting arm 300 and the center of gravity of the load of the work platform 1 coincide and do not shift relative to each other. This results in good support stability of the lifting work platform, avoids tipping over, and ensures high safety.

[0044] In this embodiment, the two first traction arms 401 can be simultaneously folded towards the center or simultaneously unfolded to both sides, so that the two first rotating arms 400 of the first rotating bracket 4 can maintain the synchronicity of their rotation angles; similarly, the two second traction arms 501 can be simultaneously folded towards the center or simultaneously unfolded to both sides, so that the two second rotating arms 500 of the second rotating bracket 5 can maintain the synchronicity of their rotation angles. Specifically in this embodiment, as... Figure 3 , Figure 4 and Figure 6As shown, the first rotating support 4 also includes a first rotating component 402 rotatably connected to the working platform 1. Both ends of the first rotating component 402 are rotatably connected to two first traction arms 401. When the working platform 1 rises and the upper ends of the two supports move towards each other, the two supports, in conjunction with the two first traction arms 401, fold towards the center, causing the first rotating component 402 to rotate around its rotation center in a first direction. When the working platform 1 descends and the upper ends of the two supports move away from each other, the two supports, in conjunction with the two first traction arms 401, unfold to both sides, causing the first rotating component 402 to rotate around its rotation center in a second direction. The first and second directions are opposite; that is, the first direction is clockwise, and the second direction is counterclockwise, and vice versa. In this embodiment, if any one of the first traction arms 401 folds towards the center or unfolds outwards, the other first traction arm 401 can be folded towards the center or unfolded outwards in conjunction with the first rotating component 402, thus keeping the rotation angles of the two first rotating arms 400 synchronized.

[0045] Furthermore, such as Figure 3 and Figure 6 As shown, the second rotating support 5 also includes a second rotating member 502 rotatably connected to the base 2. Both ends of the second rotating member 502 are rotatably connected to two second traction arms 501. When the working platform 1 rises, causing the lower ends of the two supports to move towards each other, the two supports, in conjunction with the two second traction arms 501, fold towards the center, causing the second rotating member 502 to rotate around its rotation center in a first direction. When the working platform 1 descends, causing the lower ends of the two supports to move away from each other, the two supports, in conjunction with the two second traction arms 501, unfold to both sides, causing the second rotating member 502 to rotate around its rotation center in a second direction. The first and second directions are opposite. Folding one second traction arm 501 towards the center or unfolding it outwards can be coordinated with the other second traction arm 501 to fold towards the center or unfold it outwards via the second rotating member 502, thus ensuring that the rotation angles of the two second rotating arms 500 remain synchronized.

[0046] In other embodiments, the two first traction arms 401 can be folded toward the center or unfolded to both sides at the same time, and the two second traction arms 501 can be folded toward the center or unfolded to both sides at the same time. Other synchronous structures can also be adopted, such as installing a guide seat at the bottom of the working platform 1, with the two first traction arms 401 parallel to each other and both slidingly engaged with the guide seat, and the guide seat having a certain frictional force with the two first traction arms 401. When the upper ends of the two support arms move toward each other, the two first traction arms 401 move toward or fold toward the guide seat. When the upper ends of the two support arms move away from each other, the two first traction arms 401 unfold toward both sides of the guide seat along the sliding direction. The constant friction between the guide seat and the two first traction arms 401 is used to ensure the synchronous movement of the two first traction arms. Alternatively, the synchronous structure can also be a parallelogram rotating structure composed of connecting rods, with two opposite rotation points connected to the two first traction arms 401 respectively. The other two rotation points are limited to sliding in a direction perpendicular to the movement direction of the two first traction arms 401. The two opposite rotation points of the parallelogram rotating structure can simultaneously fold inward or unfold outward.

[0047] It is easy to understand that in the embodiments of this application, two first rotating arms 400 are symmetrically arranged on the work platform 1, and two second rotating arms 500 are symmetrically arranged on the base 2. Furthermore, the two first rotating arms 400 and two second rotating arms 500 are symmetrically arranged about the horizontal plane where their hinge points with respect to the lifting arm 300 are located. In this embodiment, the vertical projections of the rotation connection points between the two first rotating arms 400 of the first rotating bracket 4 and the work platform 1, and the rotation connection points between the two second rotating arms 500 of the second rotating bracket 5 and the base 2, coincide. This arrangement ensures that the rotation angles of the two first rotating arms 400 and the two second rotating arms 500 remain synchronized during the lifting and lowering process of the work platform 1, resulting in smoother lifting and lowering.

[0048] In the embodiments of this application, it is understood that during the rotation and unfolding of the two first rotating arms 400 or the two second rotating arms 500, the movement of the outer ends of the first traction arm 401 and the second traction arm 501 is a curvilinear motion rather than a linear motion. In order to avoid rotational interference with the first traction arm 401 and the second traction arm 501, the two first traction arms 401 are universally connected to the first rotating member 402, and the two second traction arms 501 are universally connected to the second rotating member 502.

[0049] In this embodiment, the lifting platform further includes a locking mechanism connected to the work platform 1, used to lock the work platform 1 at any height within its travel range. Specifically, in this embodiment, the locking mechanism is connected to the work platform 1, such as... Figure 4 and Figure 5As shown, a rotating plate 404 is rotatably connected to the bottom of the working platform 1. A first rotating component 402 is connected to the rotating plate 404 and can rotate synchronously with the rotating plate 404. The rotating plate 404 is provided with at least one arc-shaped part 405, and the arc-shaped part 405 is provided with multiple positioning notches 406 distributed circumferentially. A sliding component 407 is slidably fitted on the crossbar 100 of the working platform 1. A guide hole 101 is provided on the crossbar 100. A positioning pin 408 that can be engaged or disengaged from the positioning notch 406 is connected to the sliding component 407. A portion of the positioning pin 408 is loosely fitted in the guide hole 101. When the sliding member 407 causes the positioning pin 408 to engage in the positioning notch 406, the rotating plate 404 is restricted from rotating, and the rotation of the two first rotating arms 400 is restricted, thereby restricting the rotation of the lifting arm 300 and the rotation of the two second rotating arms 500, thus limiting the working platform 1 to a certain height; similarly, when the sliding member 407 causes the positioning pin 408 to disengage from the positioning notch 406, the lifting assembly 3 can rotate to adjust the height of the working platform 1.

[0050] Furthermore, in this embodiment, there are two arc-shaped portions 405, and the opening directions of the positioning notches 406 on the two arc-shaped portions 405 are located on the same side of the rotating plate 404; two positioning pins 408 are connected to the sliding member 407, which respectively engage with the positioning notches 406 on the two arc-shaped portions 405; an elastic body is connected between the sliding member 407 and the working platform 1, and the elastic body makes the positioning pins 408 of the sliding member 407 always have a tendency to engage with the positioning notches 406. The two positioning pins 408 on the sliding member 407 are respectively engaged with the positioning notches 406 on the rotating plate 404. This can improve the stability of the locking of the rotating plate 404 and further improve the load-bearing capacity of the work platform 1. An elastic body, which is a spring, connects the sliding member 407 and the work platform 1. When the sliding member 407 is released, the sliding member 407 slides back to its original position under the action of the elastic body, and the two positioning pins 408 on the sliding member 407 quickly engage with the positioning notches 406, thereby realizing the rapid locking of the work platform 1.

[0051] In other embodiments, the locking mechanism may be installed on the base 2, or the locking mechanism may be installed on both the base 2 and the working platform 1.

[0052] See Figure 1 and Figure 3As shown, each of the two first rotating arms 400 is connected to the upper end of the two support arms by a first elastic element 6, which ensures that the first rotating arm 400 always has a tendency to rotate and extend relative to the support arm; or / and each of the two second rotating arms 500 is connected to the lower end of the two support arms by a second elastic element 600, which ensures that the second rotating arm 500 always has a tendency to rotate and extend relative to the support arm. In this embodiment, both the first elastic element 6 and the second elastic element 600 are torsion springs, that is, the torsion spring is connected to the pivot of the first rotating arm 400 and the upper end of the support arm, and the two legs of the torsion spring abut against the first rotating arm 400 and the support arm respectively; or / and the torsion spring is connected to the pivot of the second rotating arm 500 and the lower end of the support arm, and the two legs of the torsion spring abut against the second rotating arm 500 and the support arm respectively. When the work platform 1 rises, both the first elastic element 6 and the second elastic element 600 can provide assistance for the work platform 1 to rise, enabling the work platform 1 to rise or extend quickly.

[0053] In other embodiments, the torsion spring can also be connected to the shaft between the first rotating arm 400 and the working platform 1, so that the two legs of the torsion spring abut against the first rotating arm 400 and the working platform 1 respectively, which can also provide rotational assistance when the first rotating arm 400 is extended; or / and the torsion spring can be connected to the shaft between the second rotating arm 500 and the base 2, so that the two legs of the torsion spring abut against the second rotating arm 500 and the base 2 respectively.

[0054] In other embodiments, the lifting platform may also include a gas spring, one end of which is connected to the first rotating arm 400 and the other end to the work platform 1; or one end of which is connected to the second rotating arm 500 and the other end to the base 2; or one end of which is connected to the work platform 1 or the base 2 and the other end to one of the supports of the lifting arm 300. The gas spring can provide assistance for the lifting assembly 3 to lift and also offset or partially offset the load on the work platform 1.

[0055] In some embodiments, see Figure 2 and Figure 3 As shown, the upper shafts of the two first rotating arms 400 are respectively connected to the first driving arms 403, which are connected to the two first traction arms 401. The first driving arms 403 and the first rotating arms 400 form a triangular support structure. Similarly, the lower shafts of the two second rotating arms 500 are respectively connected to the second driving arms 503, which are connected to the two second traction arms 501. The second driving arms 503 and the second rotating arms 500 form a triangular support structure. The arrangement of the first driving arms 403 and the second driving arms 503, which together form a triangular support structure with the first rotating arms 400, provides better support stability when the working platform 1 is in the deployed state.

[0056] In some embodiments, to facilitate keyboard placement, a keyboard tray is connected to the side of the work platform 11 closest to the user, and a support pad is connected to the bottom of the keyboard tray. When the work platform 1 is in its lowest position, the bottom plane of the support pad is at the same level as the bottom plane of the base 2. In this way, when the work platform 1 is in its lowest position, the support pad at the bottom of the keyboard tray is in contact with the ground or tabletop, thus improving the stability of the desktop lifting worktable.

[0057] 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.

[0058] 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.

[0059] 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. A lifting worktable, characterized in that: It includes Work platform; Base; as well as A lifting assembly for adjusting the height of the work platform relative to the base, the lifting assembly including at least one set of lifting arms, each set of lifting arms including at least two support arms hinged in the middle in an X-shape: a first support arm and a second support arm; the lifting assembly also includes A first rotating support includes two first rotating arms, the upper ends of which are rotatably connected to a work platform, and the lower ends of which are rotatably connected to the upper ends of a first support arm and a second support arm, respectively. The first rotating support also includes two first traction arms disposed between the two first rotating arms and simultaneously folding towards the center or simultaneously unfolding to both sides. The two first traction arms are respectively connected to the two first rotating arms to ensure that the two first rotating arms always rotate synchronously. The first rotating support includes a first rotating component rotatably connected to the work platform, with both ends of the first rotating component rotatably connected to the two first traction arms. When the work platform rises and the upper ends of the two support arms move towards each other, the two support arms, in conjunction with the two first traction arms, fold towards the center, causing the first rotating component to rotate around its rotation center in a first direction. When the work platform descends and the upper ends of the two support arms move away from each other, the two support arms, in conjunction with the two first traction arms, unfold to both sides, causing the first rotating component to rotate around its rotation center in a second direction. The first direction and the second direction are opposite. The second rotating support includes two second rotating arms, the upper ends of which are rotatably connected to the lower ends of the first and second supports, respectively, and the lower ends of which are rotatably connected to the base. The second rotating support also includes two second traction arms disposed between the two second rotating arms and simultaneously folding towards the center or simultaneously unfolding to both sides. The two second traction arms are respectively connected to the two second rotating arms to ensure that the two second rotating arms always rotate synchronously. The second rotating support includes a second rotating component rotatably connected to the base, with both ends of the second rotating component rotatably connected to the two second traction arms. When the work platform rises and the lower ends of the two supports move towards each other, the two supports, in conjunction with the two second traction arms, fold towards the center, causing the second rotating component to rotate around its rotation center in a first direction. When the work platform descends and the lower ends of the two supports move away from each other, the two supports, in conjunction with the two second traction arms, unfold to both sides, causing the second rotating component to rotate around its rotation center in a second direction. The first and second directions are opposite. The lifting work platform also includes... A locking mechanism, attached to the work platform and / or base, for locking the work platform at any height of its travel; The bottom of the working platform is rotatably connected to a rotating plate. The first rotating component is connected to the rotating plate and can rotate synchronously with the rotating plate. The rotating plate is provided with at least one arc-shaped portion, and the arc-shaped portion has multiple positioning notches distributed circumferentially. A sliding component is slidably fitted on the working platform, and the sliding component is connected with a positioning pin that can engage or disengage from the positioning notches. There are two arc-shaped portions, and the opening directions of the positioning notches on the two arc-shaped portions are located on the same side of the rotating plate. The sliding component is connected with two positioning pins that respectively engage with the positioning notches on the two arc-shaped portions. An elastic body is connected between the sliding component and the working platform, and the elastic body ensures that the positioning pins of the sliding component always have a tendency to engage with the positioning notches.

2. The lifting worktable according to claim 1, characterized in that: Each of the two first rotating arms is connected to the upper end of the two support arms by a first elastic element, which causes the first rotating arm to always have a tendency to rotate and unfold relative to the support arm; or / and each of the two second rotating arms is connected to the lower end of the two support arms by a second elastic element, which causes the second rotating arm to always have a tendency to rotate and unfold relative to the support arm.

3. The lifting worktable according to claim 1, characterized in that: The two first traction arms are respectively universally connected to the first rotating component, and the two second traction arms are respectively universally connected to the second rotating component.

4. The lifting worktable according to claim 1, characterized in that: The vertical projections of the two first rotating arms of the first rotating bracket and the rotating connection points of the working platform and the two second rotating arms of the second rotating bracket and the rotating connection points of the base coincide.

5. The lifting worktable according to claim 1, characterized in that: The upper shafts of the two first rotating arms are respectively connected to the first driving arms that are connected to the two first traction arms, and the first driving arms and the first rotating arms form a triangular support structure; and the lower shafts of the two second rotating arms are respectively connected to the second driving arms that are connected to the two second traction arms, and the second driving arms and the second rotating arms form a triangular support structure.

6. The lifting worktable according to claim 1, characterized in that: The work platform has a keyboard tray connected to the side closest to the user for placing the computer keyboard.

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