Electric lifting workbench

Abstract

The utility model discloses an electric lifting workbench which comprises a working platform, a base, a linear actuator and a lifting assembly, the lifting assembly comprises at least one set of lifting arms, each set of lifting arms comprises at least two supporting arms, the middle portions of the supporting arms are hinged to form an X shape, and the upper ends of the two supporting arms are respectively connected with a first sliding piece which is in sliding connection with the working platform. The lower ends of the two supporting arms are connected with second sliding pieces in sliding connection with the base correspondingly. A first synchronization assembly is connected between the two first sliding pieces, and a second synchronization assembly is connected between the two second sliding pieces. The driving motor drives the actuating end of the linear actuator to move so as to drive the lifting arm to move in a shearing mode. When the electric lifting workbench ascends and descends, the supporting gravity center of the lifting arm and the gravity center of the load of the working platform are relatively kept unchanged, rollover is avoided, and the supporting stability is good.

Description

Technical Field

[0001] The present application relates to the technical field of computer carrying equipment, and specifically to an electric lifting workbench. Background Art

[0002] With the continuous development of society, flat panel displays, tablet computers, etc. are becoming more and more popular in ordinary households, and the corresponding brackets have emerged. The lifting workbench for carrying tablet computers in the related technology, also known as lifting work tables, desktop workbenches, or desktop computer brackets, is generally placed on a desktop or tabletop, and can be raised and lowered to adjust the height when in use to meet the needs of users for healthy working methods such as standing or alternating between standing and sitting.

[0003] The lifting workbench of the related technology generally includes a base, a work platform and an X-shaped lifting arm arranged between the base and the work platform. The lifting arm includes two support rods with an X-shaped hinge 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 workbench 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 lifting force for the work platform to rise and to offset or partially offset the load-bearing capacity of the work platform. The lifting workbench of the related technology controls the action of the gas spring through a brake line and a wrench connected to the work platform so that the height of the work platform can be adjusted.

[0004] During actual use, the inventor discovered that the lifting work platform of the above-mentioned related technology has the following defects: the middle parts of the first support rod and the second support rod of the X-shaped lifting arm of the lifting work platform of the related technology are hinged by a hinge pin, the upper end of the first support rod and the lower end of the second support rod are respectively hinged to the base and the work platform on one side of the lifting work platform, and the lower end of the first support rod and the upper end of the second support rod are respectively slidably connected to the base and the work platform on the other side of the lifting work platform; when the work platform rises or falls relative to the base, the lower end of the first support rod and the upper end of the second support rod both slide to one side of the lifting work platform at the same time, which causes the supporting center of gravity of the lifting arm to deviate from the center of gravity of the load of the working platform, which can easily cause rollover and pose a safety hazard. Utility Model Content

[0005] The technical problem to be solved by the present application is to overcome the defects of the above-mentioned related technologies and provide an electric lifting workbench in which the supporting center of gravity of the lifting arm and the center of gravity of the work platform load remain relatively unchanged during lifting, thereby avoiding tipping and having good supporting stability.

[0006] The technical solution of the present application is to provide an electric lifting workbench having the following structure: it comprises a working platform;

[0007] A base that sits on an existing table or countertop; and

[0008] A lifting assembly is connected between the working platform and the base for adjusting the height of the working platform relative to the base, the lifting assembly includes at least one set of lifting arms, each set of lifting arms includes at least two arms hinged in the middle to form an X shape: a first arm and a second arm, the upper ends of the two arms are respectively connected to a first sliding member slidably connected to the working platform, and the lower ends of the two arms are respectively connected to a second sliding member slidably connected to the base; the electric lifting workbench also includes,

[0009] Two sets of synchronization components: a first synchronization component and a second synchronization component, wherein the first synchronization component is respectively connected to the two first sliding members, and the second synchronization component is respectively connected to the two second sliding members, and is used to keep the two first sliding members and the two second sliding members moving synchronously when the height of the working platform is adjusted relative to the base;

[0010] A linear actuator is arranged between the working platform and the base, and comprises a driving motor and an actuator body drivingly connected to the driving motor, wherein the actuator body has an actuator end which can axially reciprocate relative to the actuator body, and the actuator end is used to drive the lifting arm to move in a shearing manner.

[0011] In some embodiments, the first synchronization component includes a first gear disposed between the two first sliding members and rotatably connected to the working platform, and two first racks slidably fitted on the working platform and respectively connected to the two first sliding members, the two first racks being respectively located on both sides of the first gear and both meshingly transmitting with the first gear;

[0012] The second synchronization component includes a second gear arranged between the two second sliding members and rotatably connected to the base, and two second racks slidingly fitted on the base and respectively connected to the two second sliding members, the two second racks are respectively located on both sides of the second gear and are both meshed with the second gear for transmission.

[0013] In some embodiments, the actuator body includes a screw connected to a work platform or a base and capable of rotating, wherein the axial direction of the screw is consistent with the sliding direction of the sliding member, a slider is threadedly connected to the screw, the slider forms the actuating end, and the slider is connected to the sliding member.

[0014] In some embodiments, a connecting arm is rotatably connected to the sliding block, and the connecting arm is rotatably connected to the sliding member.

[0015] In some embodiments, an upper base is connected to the working platform, and the first gear is rotatably connected to the upper base; the upper base is provided with two first guide holes, which are respectively located on both sides of the first gear and for the two first racks to pass through respectively; the base is connected to a lower base, and the second gear is rotatably connected to the lower base; the lower base is provided with two second guide holes, which are respectively located on both sides of the second gear and for the two second racks to pass through respectively.

[0016] In some embodiments, the upper base is connected to the center of the bottom of the work platform, and the lower base is connected to the center of the base.

[0017] In some embodiments, the outer ends of the two first racks are respectively formed with a first connecting seat, and the two first connecting seats can be rotatably connected and axially limited on the two first sliding members; the outer ends of the two second racks are respectively formed with a second connecting seat, and the two second connecting seats can be rotatably connected and axially limited on the two second sliding members.

[0018] In some embodiments, the working platform is connected with two groups of first slide rail assemblies distributed at intervals along the length direction, and the two groups of first slide rail assemblies are respectively slidably connected with first slide rods, and the two first slide rods are arranged in parallel to form two first sliding parts; the base is connected with two groups of second slide rail assemblies distributed at intervals along the length direction, and the two groups of second slide rail assemblies are respectively slidably connected with second slide rods, and the two second slide rods are arranged in parallel to form two second sliding parts.

[0019] In some embodiments, a horizontal projection of the drive motor along the vertical direction is located outside the base.

[0020] In some embodiments, a keyboard tray is connected to the side of the work platform close to the user, and a support pad is connected to the bottom of the keyboard tray. When the work platform is in the lowest position, the bottom plane of the support pad is at the same level as the bottom plane of the base.

[0021] In summary, compared with the related art, the electric lifting work platform of the present application has the following advantages: the middle parts of the two support arms of the lifting arm of the electric lifting work platform are hinged in an X shape, and the upper ends of the two support arms are respectively connected to the first sliding members slidably connected to the work platform, and the lower ends of the two support arms are respectively connected to the second sliding members slidably connected to the base, so that the two support arms of the electric lifting work platform perform scissor-difference motion during the lifting process, so that the upper ends of the two support arms move toward or away from each other, and at the same time, the lower ends of the two support arms move toward or away from each other; that is, during the lifting process of the electric lifting work platform, the upper ends and lower ends of the two support arms of the lifting arm are simultaneously retracted toward the center or simultaneously expanded to both sides, so that within the entire height adjustment range of the lifting work platform, the support center of gravity of the lifting arm and the center of gravity of the load of the work platform remain relatively unchanged, or the support center of gravity of the lifting arm is always maintained on the same vertical line with the load center of gravity of the work platform, or the support center of gravity of the lifting arm coincides with the load center of gravity of the work platform and will not shift relatively, so that the support stability of the lifting work platform is good, and rollover is avoided, and the safety is high.

[0022] Furthermore, with the arrangement of the two sets of synchronization components, when the working platform is raised or lowered relative to the base, the traction or restriction of the two sets of synchronization components can enable the two first sliding members and the two second sliding members to always maintain synchronous movement. That is, the two sets of synchronization components enable the upper and lower ends of the first arm and the second arm to move toward or away from each other at the same time with the same displacement and rotation angle. This not only ensures the smoothness of the lifting and lowering of the working platform, but also ensures that the working platform will not tilt during the rising or falling process, always maintains a horizontal state, and has good support stability.

[0023] In addition, the electric lifting work platform uses a drive motor to drive the actuator end of the actuator body to move, thereby driving the lifting arm to move in a shearing manner to achieve height adjustment of the working platform, and the lifting arm can stay at any position of its stroke to achieve stepless adjustment of the height of the working platform, which is simple and convenient to operate; the setting of the drive motor can be adapted to the hand controller, remote control or mobile phone control program, providing a basis for remote control of the electric lifting work platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of an electric lifting work platform according to some embodiments of the present application.

[0025] Figure 2 This is a schematic diagram from another angle of an electric lifting work platform according to some embodiments of the present application.

[0026] Figure 3 This is a schematic diagram of the bottom structure of an electric lifting work platform according to some embodiments of the present application.

[0027] Figure 4This is a schematic diagram of the bottom assembly structure of an electric lifting workbench according to some embodiments of the present application.

[0028] Figure 5 It is a side schematic diagram of an electric lifting work platform according to some embodiments of the present application.

[0029] Figure 6 is a schematic diagram of a linear actuator of an electric lifting workbench according to some embodiments of the present application.

[0030] Figure 7 This is a schematic diagram of a folded state of an electric lifting workbench according to some embodiments of the present application.

[0031] Figure 8 This is a bottom schematic diagram of an electric lifting workbench in a folded state according to some embodiments of the present application.

[0032] Description of reference numerals:

[0033] 1. working platform, 100. first slide rail assembly, 2. base, 200. second slide rail assembly, 3. lifting arm, 300. first support arm, 301. second support arm, 302. rotating shaft, 303. first sliding member, 304. second sliding member, 4. keyboard tray, 5. linear actuator, 500. driving motor, 501. supporting frame, 502. lead screw, 503. slider, 504. connecting arm, 6. first synchronization assembly, 600. upper base, 601. first gear, 602. first rack, 603. first connecting seat, 604. first guide hole, 7. second synchronization assembly, 700. lower base, 701. second gear, 702. second rack, 703. second connecting seat, 704. second guide hole. DETAILED DESCRIPTION

[0034] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0035] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0036] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

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

[0038] See also Figures 1 to 8 As shown, an embodiment of the present application discloses an electric lifting workbench, which is also called a desktop workbench, a desktop lifting table, etc. Its structure includes a work platform 1, a base 2, a linear actuator 5 and a lifting component connecting 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 called a table top, an upper platform, a storage panel, etc., the base 2 is also called a base, a lower platform, a chassis, etc., and the base 2 is placed on a desktop or table top in the prior art.

[0039] In this embodiment, the lifting assembly includes at least one group of lifting arms 3, and each group of lifting arms 3 includes at least two arms hinged in the middle to form an X shape: a first arm 300 and a second arm 301, that is, the first arm 300 and the second arm 301 intersect in an X shape, and the intersection is rotatably connected by a rotating shaft 302, the upper ends of the two arms are respectively connected to a first sliding member 303 slidably connected to the working platform 1, and the lower ends of the two arms are respectively connected to a second sliding member 304 slidably connected to the base 2; specifically, the working platform 1 is connected with two groups of first slide rail assemblies 100 distributed at intervals along the length direction, and the two groups of first slide rail assemblies 100 are respectively slidably connected to the first slide rods, and the two first slide rods are arranged in parallel to form two first slide members 303; the base 2 is connected with two groups of second slide rail assemblies 200 distributed at intervals along the length direction, and the two groups of second slide rail assemblies 200 are respectively slidably connected to the second slide rods, and the two second slide rods are arranged in parallel to form two second slide members 304. In this embodiment, the two sets of first slide rail assemblies 100 and the two sets of second slide rail assemblies 200 are respectively opposite to each other in vertical direction and parallel to each other.

[0040] In other embodiments, in order to ensure the smooth sliding of the first sliding member 303 and the second sliding member 304, soft friction blocks are connected to the first sliding member 303 and the second sliding member 304, or friction pads are set on the first slide rail assembly 100 and the second slide rail assembly 200, so that the first sliding member 303 and the second sliding member 304 can slide more smoothly. The two first slide rail assemblies 100 can also be whole slide rails, but when the two first slide bars slide toward each other to the shortest distance, there is a certain gap between the two, and the gap is sufficient to provide support for the working platform 1. Similarly, the two second slide rail assemblies 200 can also be whole slide rails, but when the two second slide bars slide toward each other to the shortest distance, there is a certain gap between the two, and the gap is sufficient to provide support for the working platform 1.

[0041] In this embodiment, when the height of the working platform 1 is adjusted relative to the base 2, the two arms move in a scissor-difference motion or in a shearing manner, so that the upper ends of the two arms move toward each other or away from each other at the same time, and the lower ends of the two arms move toward each other or away from each other at the same time; that is, during the lifting process of the electric lifting workbench, the upper ends and lower ends of the two arms are simultaneously retracted toward the center or simultaneously extended to both sides. At the same time, the two first sliding members 303 connected to the upper ends of the two arms and the two second sliding members 304 connected to the lower ends of the two arms are simultaneously retracted toward the center or simultaneously extended to both sides.

[0042] Within the entire height adjustment range of the electric lifting work platform, the support center of gravity of the lifting arm 3 and the center of gravity of the load on the working platform 1 remain relatively unchanged, or the support center of gravity of the lifting arm 3 and the load center of gravity of the working platform 1 are always maintained on the same vertical line, or the support center of gravity of the lifting arm 3 coincides with the load center of gravity of the working platform 1 and will not shift relatively, thereby ensuring that the electric lifting work platform has good support stability, avoids rollover, and has high safety.

[0043] Further in this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the first arm 300 is a rectangular frame, the second arm 301 is a single rod, and the second arm 301 is cross-rotatably connected to the middle position of the first arm 300. Compared with the lifting arm 3 structure in which both arms are rectangular frames, the structure of the lifting arm 3 can be simpler and more compact.

[0044] In this embodiment, the lifting arms 3 of the lifting assembly are arranged in a group. In other embodiments, the lifting arms 3 of the lifting assembly may also be arranged in two groups, three groups, etc., and arranged along the width direction of the working platform 1.

[0045] It is not difficult to understand that when the two arms perform scissor difference motion, if the horizontal displacement and rotation angle of the upper ends of the two arms or / and the lower ends of the two arms are not synchronized or there is a motion lag, it is easy to cause the working platform 1 to tilt or rise and fall unsmoothly or jam. In the embodiment of the present application, in order to avoid these defects, a first synchronization component 6 is connected between the two first sliding members 303, and a second synchronization component 7 is connected between the two second sliding members 304; Figure 4 and Figure 5 As shown, the first synchronization component 6 is respectively connected to the two first sliding members 303, and the second synchronization component 7 is respectively connected to the two second sliding members 304, so as to keep the two first sliding members 303 and the two second sliding members 304 in synchronous motion when the height of the working platform 1 is adjusted relative to the base 2. When the working platform 1 is raised or lowered relative to the base 2, the traction or restriction of the two sets of synchronization components can keep the two first sliding members 303 and the two second sliding members 304 in synchronous motion, that is, the two sets of synchronization components make the displacement and rotation angle of the upper and lower ends of the first support arm 300 and the second support arm 301 moving toward or away from each other at the same time the same, so that not only the stability of the lifting and lowering of the working platform 1 can be ensured, but also the working platform 1 will not tilt during the rising or falling process, and always maintain a horizontal state, and the support stability is good.

[0046] As shown in the above embodiment, the synchronization component is used to keep the two first sliding members 303 and the two second sliding members 304 in synchronous motion at all times, so the synchronization component can have a variety of structural forms. For example, in some embodiments, the synchronization component can be a rotating arm installed on the working platform 1 or the base 2 and can rotate horizontally around the center, and the two ends of the rotating arm are rotatably connected to the two traction arms respectively. The two traction arms are rotatably connected to the two first sliding members 303 or the two second sliding members 304 respectively, and the two traction arms are symmetrically arranged about the rotation center of the rotating arm. The rotation of the rotating arm can make the two traction arms link the two first sliding members 303 or the two second sliding members 304 to fold toward the center or unfold to both sides at the same time, that is, the two traction arms of the synchronization component interact with each other so that the two can achieve the effect of synchronous motion together, so that the lifting of the working platform 1 is more stable and always maintains a horizontal state during the entire lifting stroke.

[0047] For example, in some other embodiments, the synchronization component can be a guide seat installed at the bottom of the working platform 1, the two traction arms are parallel to each other and both slide with the guide seat, the outer ends of the two traction arms are respectively connected to the two first sliding members 303, and there is a certain friction between the guide seat and the two traction arms. When the two first sliding members 303 move toward each other, the two traction arms move closer or fold toward the guide seat, and when the two sliding members move away from each other, the two traction arms unfold toward both sides of the guide seat along the sliding direction, and the constant friction between the guide seat and the two traction arms is used to ensure the synchronous movement of the two sliding members.

[0048] For example, in some other embodiments, the synchronization component can also be a parallelogram rotation structure composed of connecting rods, where two relative rotation points are connected to two sliding members through traction arms respectively, and the other two rotation points are limited to sliding in a direction perpendicular to the sliding direction of the two sliding members. The two relative rotation points of the parallelogram rotation structure can be folded inward or unfolded outward at the same time, thereby linking or limiting the synchronous movement of the two sliding members.

[0049] In this embodiment, if Figure 4 and Figure 5 As shown, the first synchronization component 6 includes a first gear 601 arranged between the two first sliding members 303 and rotatably connected to the working platform 1, and two first racks 602 slidably fitted on the working platform 1 and respectively connected to the two first sliding members 303, the two first racks 602 are respectively located on both sides of the first gear 601 and are both meshed with the first gear 601 for transmission; similarly, the second synchronization component 7 includes a second gear 701 arranged between the two second sliding members 304 and rotatably connected to the base 2, and two second racks 702 slidably fitted on the base 2 and respectively connected to the two second sliding members 304, the two second racks 702 are respectively located on both sides of the second gear 701 and are both meshed with the second gear 701 for transmission. In this way, when the working platform 1 rises relative to the base 2, the first arm 300 and the second arm 301 drive the two first racks 602 to move toward each other and get closer to the center, and at the same time, the two second racks 702 are linked to move toward each other and get closer to the center; conversely, when the working platform 1 descends relative to the base 2, the first arm 300 and the second arm 301 drive the two first racks 602 to move away from each other, and at the same time, the two second racks 702 are linked to move away from each other and spread out; because the first synchronous component 6 and the second synchronous component 7 both use the meshing of racks and gears to keep the movements of the two first racks 602 and the two second racks 702 synchronized, the structure is simple, the installation is convenient, and the synchronization is good, which not only ensures the stability of the lifting and lowering of the working platform 1, but also ensures that the working platform 1 will not tilt during the rising or falling process and always maintains a horizontal state.

[0050] Further in this embodiment, in order to ensure the smoothness of the translational motion of the first rack 602 and the second rack 702 and to always keep them in mesh with the gears, as shown in FIG. Figure 4As shown, an upper base 600 is connected to the working platform 1, and the upper base 600 is connected to the bottom center of the working platform 1, and the first gear 601 is rotatably connected in the upper base 600; the upper base 600 is provided with two first guide holes 604 which are respectively located on both sides of the first gear 601 and for two first racks 602 to pass through respectively; a lower base 700 is connected to the base 2, and the lower base 700 is connected to the center of the base 2, and the second gear 701 is rotatably connected in the lower base 700; the lower base 700 is provided with two second guide holes 704 which are respectively located on both sides of the second gear 701 and for two second racks 702 to pass through respectively.

[0051] As is known to all, when the first arm 300 and the second arm 301 of the lifting arm 3 perform scissor-difference motion, the first sliding member 303 and the second sliding member 304 connected to the first arm 300 and the second arm 301 perform translational motion and simultaneously rotate around their own axes in the circumferential direction at an angle; therefore, in this embodiment, Figure 2 , Figure 3 , Figure 4 As shown, the outer ends of the two first racks 602 are respectively formed with first connection seats 603, and the two first connection seats 603 are respectively rotatably connected and axially limited on the two first sliding members 303; the outer ends of the two second racks 702 are respectively formed with second connection seats 703, and the two second connection seats 703 are respectively rotatably connected and axially limited on the two second sliding members 304. Specifically, the two first sliding members 303 are respectively provided with first annular limiting grooves corresponding to the two first connection seats 603 and concave; each first connection seat 603 is connected with a first elastic limiting block, and the first elastic limiting block is embedded in the first annular limiting groove; the two second sliding members 304 are respectively provided with second annular limiting grooves corresponding to the two second connection seats 703 and concave; each second connection seat 703 is connected with a second elastic limiting block, and the second elastic limiting block is embedded in the second annular limiting groove. The elastic limiting block is embedded in the annular limiting groove to realize the axial limiting between the connecting seat and the sliding member, thereby making the synchronization of the first synchronous component 6 and the second synchronous component 7 more stable.

[0052] In the embodiment of the present application, the linear actuator 5 for driving the work platform 1 to rise and fall relative to the base 2 is arranged between the work platform 1 and the base 2. The linear actuator 5 includes a driving motor 500 and an actuator body connected to the driving motor 500. The actuator body has an actuating end that can axially reciprocate relative to the actuator body, and the actuating end is used to drive the lifting arm 3 to move in a shearing manner. Specifically, the actuator body includes a lead screw 502 connected to the work platform 1 or the base 2 and capable of self-rotation. The axial direction of the lead screw 502 is consistent with the sliding direction of the sliding member. A slider 503 is threadedly connected to the lead screw 502. The slider 503 forms the actuating end, and the slider 503 is connected to the sliding member. The driving motor 500 drives the lead screw 502 to rotate, so that the slider 503 moves along the axial direction of the lead screw 502, thereby driving the sliding member to slide, and realizing driving the lifting arm 3 to move in a shearing manner.

[0053] In the above embodiment, the linear actuator 5 is arranged between the working platform 1 and the base 2, that is, the linear actuator 5 can be connected to the working platform 1, can also be connected to the base 2, or can be connected to any position between the working platform 1 and the base 2. Specifically in this embodiment, Figure 4 and Figure 6 As shown, the linear actuator 5 is connected to the working platform 1, and the linear actuator 5 also includes a support frame 501 connected to the working platform 1, and a lead screw 502 which is rotatably connected to the support frame 501 and is transmission-connected to the driving motor 500, and the actuating end of the linear actuator 5 is connected to the first sliding member 303, and the actuating end of the linear actuator 5 drives the first sliding member 303 to move, thereby driving the lifting arm 3 to rise and fall.

[0054] Furthermore, a connecting arm 504 is provided between the slider 503 and the first slider 303, and a first end of the connecting arm 504 is rotatably connected to the slider 503, and a second end of the connecting arm 504 is rotatably connected to the first slider 303. When the driving motor 500 drives the lead screw 502 to rotate, the slider 503 can move along the axial direction of the lead screw 502, and the first slider 303 can be driven to move through the connecting arm 504. The setting of the connecting arm 504 can expand the stroke range of the slider 503, so that the stroke of the first slider 303 can be set larger, so that the working platform 1 can rise to a higher height when rising, and the working platform 1 can descend to a lower height when descending.

[0055] In other embodiments, the actuating end of the linear actuator 5 may also be an end of a driving shaft that is axially movable relative to the actuator body.

[0056] In other embodiments, the linear actuator 5 may also be installed on the base 2 . In this case, the slider 503 is connected to the second sliding member 304 on the base 2 via the connecting arm 504 .

[0057] In other embodiments, the actuating end of the linear actuator 5 may also be connected to the working platform 1 , and the actuator body of the linear actuator 5 may be connected to the base 2 , etc.

[0058] In some embodiments, Figure 7 and Figure 8 As shown, the horizontal projection of the drive motor 500 along the vertical direction is located outside the base 2. When the working platform 1 is lowered to the lowest height, interference between the drive motor 500 and the base 2 can be avoided, so that the working platform 1 can be lowered to a lower height.

[0059] In some embodiments, in order to facilitate the placement of the keyboard, a keyboard tray 4 is connected to the side of the work platform 1 close to the user, and a support pad is connected to the bottom of the keyboard tray 4. When the work platform 1 is at the lowest position, the bottom plane of the support pad is at the same horizontal height as the bottom plane of the base 2. In this way, when the work platform 1 is at the lowest position, the support pad at the bottom of the keyboard tray 4 is in contact with the ground or table top, which makes the electric lifting workbench stand more stable.

[0060] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships 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, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0061] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0062] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An electric lifting workbench, characterized in that: It includes Work platform; A base that sits on an existing tabletop or countertop; as well as A lifting assembly is connected between the working platform and the base for adjusting the height of the working platform relative to the base, the lifting assembly includes at least one set of lifting arms, each set of lifting arms includes at least two arms hinged in the middle to form an X shape: a first arm and a second arm, the upper ends of the two arms are respectively connected to a first sliding member slidably connected to the working platform, and the lower ends of the two arms are respectively connected to a second sliding member slidably connected to the base; the electric lifting workbench also includes, Two sets of synchronization components: a first synchronization component and a second synchronization component, wherein the first synchronization component is respectively connected to the two first sliding members, and the second synchronization component is respectively connected to the two second sliding members, and is used to keep the two first sliding members and the two second sliding members moving synchronously when the height of the working platform is adjusted relative to the base; A linear actuator is arranged between the working platform and the base, and comprises a driving motor and an actuator body drivingly connected to the driving motor, wherein the actuator body has an actuator end which can axially reciprocate relative to the actuator body, and the actuator end is used to drive the lifting arm to move in a shearing manner.

2. The electric lifting workbench according to claim 1, characterized in that: The first synchronization component includes a first gear disposed between the two first sliding members and rotatably connected to the working platform, and two first racks slidably fitted on the working platform and respectively connected to the two first sliding members, the two first racks being respectively located on both sides of the first gear and both meshingly transmitting with the first gear; The second synchronization component includes a second gear arranged between the two second sliding members and rotatably connected to the base, and two second racks slidingly fitted on the base and respectively connected to the two second sliding members, the two second racks are respectively located on both sides of the second gear and are both meshed with the second gear for transmission.

3. The electric lifting workbench according to claim 1, characterized in that: The actuator body includes a lead screw connected to a working platform or a base and capable of rotating. The axial direction of the lead screw is consistent with the sliding direction of the sliding member. A slider is threadedly connected to the lead screw, the slider forms the actuating end, and the slider is connected to the sliding member.

4. The electric lifting workbench according to claim 3, characterized in that: The sliding block is rotatably connected with a connecting arm, and the connecting arm is rotatably connected to the sliding member.

5. The electric lifting workbench according to claim 2, characterized in that: The working platform is connected to an upper base, and the first gear is rotatably connected in the upper base; the upper base is provided with two first guide holes, which are respectively located on both sides of the first gear and through which the two first racks pass respectively; the base is connected to a lower base, and the second gear is rotatably connected in the lower base; the lower base is provided with two second guide holes, which are respectively located on both sides of the second gear and through which the two second racks pass respectively.

6. The electric lifting workbench according to claim 5, characterized in that: The upper base is connected to the bottom center of the working platform, and the lower base is connected to the center of the base.

7. The electric lifting workbench according to claim 2, characterized in that: The outer ends of the two first racks are respectively formed with a first connecting seat, and the two first connecting seats can be rotatably connected and axially limited on the two first sliding members; the outer ends of the two second racks are respectively formed with a second connecting seat, and the two second connecting seats can be rotatably connected and axially limited on the two second sliding members.

8. The electric lifting workbench according to claim 1, characterized in that: The working platform is connected with two groups of first slide rail assemblies distributed at intervals along the length direction, and the two groups of the first slide rail assemblies are respectively slidably connected with first slide rods, and the two first slide rods are arranged in parallel to form two first sliding parts; the base is connected with two groups of second slide rail assemblies distributed at intervals along the length direction, and the two groups of the second slide rail assemblies are respectively slidably connected with second slide rods, and the two second slide rods are arranged in parallel to form two second sliding parts.

9. The electric lifting workbench according to claim 1, characterized in that: The horizontal projection of the driving motor along the vertical direction is located outside the base.

10. The electric lifting workbench according to claim 1, characterized in that: A keyboard tray is connected to the side of the work platform close to the user, and a support pad is connected to the bottom of the keyboard tray. When the work platform is in the lowest position, the bottom plane of the support pad is at the same level as the bottom plane of the base.

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