Electric lifting workbench

Abstract

The utility model discloses an electric lifting workbench which comprises a working platform, a base, a lifting assembly and an electric driving assembly, the lifting assembly comprises at least two sets of lifting arms, each set of lifting arms comprises a first supporting arm and a second supporting arm, the middles of the first supporting arm and the second supporting arm are hinged to form an X shape, and at least one end of each set of lifting arms is provided with a synchronous module. The synchronization module comprises a hollow base, a synchronization mechanism arranged in the base and sliding rails arranged on the base, and the end of the first supporting arm and the end of the second supporting arm are slidably connected with the base through the sliding rails. And the synchronizing mechanism can be used for enabling the first end of the first support arm and the first end of the second support arm to synchronously move towards each other or synchronously move away from each other along the length direction of the slide rail. The electric driving assembly is in transmission connection with the synchronizing mechanism, and the height of the working platform can be adjusted by driving the synchronizing mechanism to act. According to the electric lifting workbench, the synchronizing mechanism is arranged in the base, and the electric lifting workbench is high in safety performance, not prone to damage and high in lifting stability.

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, or desktop computer brackets, etc., 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] A lifting workbench of related technology, such as the lifting workbench disclosed in the patent application with publication number CN117502808A previously applied by the applicant of this case, has a structure including a working platform, a base, and at least one group of lifting arms, each group of lifting arms including at least two support arms hinged in the middle to form an X-shape; the upper ends of the two support arms are respectively provided with first sliding members slidably connected to the working platform, and the lower ends of the two support arms are respectively provided with second sliding members slidably connected to the base; a first synchronization component located at the bottom of the working platform and protruding downward is connected between the two first sliding members, and a second synchronization component located on the base is connected between the two second sliding members; the synchronization component is transmitted by two racks meshing with the rotating gear at the same time, so that the movement between the two first sliding members and between the two second sliding members is kept synchronized.

[0004] During actual use, the inventor discovered that the lifting work platform of the above-mentioned related technology has the following defects: the lifting work platform of the related technology has synchronization mechanisms installed on the bottom of the working platform and the base are exposed outward. When adjusting the height of the working platform to link the movement of the synchronization mechanism, there is not only a safety hazard of pinching hands, but also it is easy to be damaged by accidental contact or accidental collision; furthermore, the synchronization mechanism has a large span and poor coordination stability, which causes the working platform to shake when the height is adjusted, and the user experience is poor. 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 with high safety performance, not easy to damage and high lifting stability.

[0006] The technical solution of the present application is to provide an electric lifting workbench with the following structure:

[0007] Work platform;

[0008] A base that sits on an existing table or countertop; and

[0009] A lifting assembly connected to the working platform and the base for adjusting the height of the working platform relative to the base, the lifting assembly comprising at least one set of lifting arms, each set of lifting arms comprising two arms hinged in the middle in an X shape: a first arm and a second arm, and the first end of the first arm and the first end of the second arm are respectively slidably connected to the working platform, and the second end of the first arm and the second end of the second arm are respectively slidably connected to the base;

[0010] A synchronization module is provided between the first end of the first support arm and the first end of the second support arm of each group of the lifting arms, and / or a synchronization module is provided between the second end of the first support arm and the second end of the second support arm; the synchronization module comprises a hollow base, a synchronization mechanism arranged in the base and a slide rail arranged on the base; and the first end of the first support arm and the first end of the second support arm of each group of the lifting arms are respectively slidably connected to the base through the slide rail, and the synchronization mechanism is used to make the first end of the first support arm and the first end of the second support arm synchronously move toward each other or move away from each other along the length direction of the slide rail; and / or the second end of the first support arm and the second end of the second support arm of each group of the lifting arms are respectively slidably connected to the base through the slide rail, and the synchronization mechanism is used to make the second end of the first support arm and the second end of the second support arm synchronously move toward each other or move away from each other along the length direction of the slide rail;

[0011] An electric drive component is connected to the working platform or the base, and the electric drive component is in driving connection with the synchronization mechanism, so that the synchronization mechanism drives the first end of the first branch arm and the first end of the second branch arm of the lifting arm to move toward each other or away from each other synchronously, or drives the second end of the first branch arm and the second end of the second branch arm of the lifting arm to move toward each other or away from each other synchronously.

[0012] In some embodiments, the synchronization mechanism includes a first sliding member, a second sliding member and a synchronization gear, the first sliding member and the second sliding member move toward or away from each other along the length direction, and the first sliding member is provided with a first tooth portion along the length direction, and the second sliding member is provided with a second tooth portion along the length direction; the synchronization gear is located between the first sliding member and the second sliding member and is rotatably connected to the base, the synchronization gear is respectively engaged with the first tooth portion and the second tooth portion, the first sliding member and the second sliding member are respectively connected to the first end of the first branch arm and the first end of the second branch arm of each group of the lifting arms, and / or the first sliding member and the second sliding member are respectively connected to the second end of the first branch arm and the second end of the second branch arm of each group of the lifting arms; the electric drive assembly is transmission-connected to the synchronization gear for driving the synchronization gear to rotate.

[0013] In some embodiments, the axial direction of the synchronous gear shaft is parallel to the horizontal plane where the working platform is located.

[0014] In some embodiments, the lifting assembly includes two groups of lifting arms, a synchronization rod is arranged between the two groups of lifting arms, and the two ends of the synchronization rod are respectively connected to the synchronization gears of the synchronization mechanism of the two groups of lifting arms, and the power output end of the electric drive assembly is connected to the synchronization rod.

[0015] In some embodiments, a plug-in hole for the synchronization rod to be inserted is provided at the center of the synchronization gear; both ends of the synchronization rod are respectively inserted into the plug-in holes of the synchronization gears of the two groups of lifting arms and are circumferentially limited with the plug-in holes.

[0016] In some embodiments, the synchronization module is arranged between the first end of the first arm and the first end of the second arm of each group of the lifting arms, and between the second end of the first arm and the second end of the second arm of each group of the lifting arms; the two ends of the synchronization rod are respectively connected to the synchronization gear transmission of the synchronization modules at the upper ends of the two groups of lifting arms, and the electric drive assembly is connected to the working platform.

[0017] In some embodiments, a lower travel switch is connected between the working platform and the base, and the lower travel switch is electrically connected to the electric drive component; when the working platform descends to the minimum height or close to the minimum height position, the lower travel switch is triggered to contact the working platform or the base to control the electric drive component to stop working.

[0018] In some embodiments, the first sliding member is provided with a first limiting portion that is offset against the synchronous gear, and the first limiting portion is located at the inner end of the first tooth portion; the second sliding member is provided with a second limiting portion that is offset against the synchronous gear, and the second limiting portion is located at the inner end of the second tooth portion.

[0019] In some embodiments, a detachable keyboard tray is connected to a side of the work platform close to the user.

[0020] In summary, compared with the related art, the electric lifting work platform of the present application has the following advantages: the electric lifting work platform is provided with a synchronization module between the first end of the first arm and the first end of the second arm of each group of lifting arms, and / or a synchronization module is provided between the second end of the first arm and the second end of the second arm of each group of lifting arms, and the synchronization module includes a hollow base, a synchronization mechanism arranged in the base and a slide rail arranged on the base. The height adjustment of the working platform is achieved by driving the synchronization mechanism through the electric drive component; therefore, the operation of the electric lifting workbench is simple and convenient, and the height adjustment of the working platform can be completed by simply starting the electric drive component; in addition, the synchronization mechanism is arranged in the base of the synchronization module, so that the synchronization mechanism is hidden in the base and not exposed, so that when the height of the working platform is adjusted, the synchronization mechanism can effectively avoid pinching the hands, and the safety is high; moreover, the synchronization mechanism is located in the base of the synchronization module, so that it can avoid damage caused by accidental human contact or accidental collision; furthermore, the synchronization mechanism is integrated in the synchronization module for the sliding end of the support arm of the lifting arm, so that the structure between the synchronization mechanism and the end of the lifting arm is more compact, and the span of the synchronization mechanism is small, so that the lifting stability of the lifting workbench is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of an electric lifting work platform according to some embodiments of the present application.

[0022] Figure 2 This is a schematic diagram from another angle of an electric lifting work platform according to some embodiments of the present application.

[0023] 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.

[0024] Figure 4 It is a schematic diagram of a side sectional structure of an electric lifting work platform according to some embodiments of the present application.

[0025] Figure 5 It is a schematic diagram of the assembly structure of an electric lifting workbench according to some embodiments of the present application.

[0026] Figure 6 This is a schematic diagram of a folded state of an electric lifting workbench according to some embodiments of the present application.

[0027] Figure 7 It is a structural schematic diagram of a synchronization module of an electric lifting work platform according to some embodiments of the present application.

[0028] Description of reference numerals:

[0029] 1. Working platform, 100. First base, 101. First slide rail, 2. Base, 200. Second base, 201. Second slide rail, 3. Lifting assembly, 300. Lifting arm, 301. First support arm, 302. Second support arm, 303. First pull rod, 304. Second pull rod, 4. Keyboard tray, 5. Electric drive assembly, 500. Drive motor, 501. Controller, 6. Synchronizing mechanism, 600. First sliding member, 601. Second sliding member, 602. Synchronizing gear, 603. First tooth portion, 604. Second tooth portion, 605. First limit portion, 606. Second limit portion, 7. Synchronizing rod, 8. Lower stroke switch. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

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

[0034] See also Figure 1 to Figure 7 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 and a lifting component 3 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 lower platform, a bottom frame, etc., and the base 2 is placed on a desktop or table top in the prior art.

[0035] In this embodiment, if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the lifting assembly 3 includes at least one group of lifting arms 300, and each group of lifting arms 300 includes two arms hinged in the middle to form an X shape: a first arm 301 and a second arm 302, that is, the first arm 301 and the second arm 302 are crossed in the middle to form an X shape, and the crossing part is rotatably connected through a rotating shaft, and the first end of the first arm 301 and the first end of the second arm 302 are respectively slidably connected to the working platform 1, and the second end of the first arm 301 and the second end of the second arm 302 are respectively slidably connected to the base 2.

[0036] It can be understood that the first support arm 301 or the second support arm 302 is a rod or plate with a certain length, having two ends, namely a first end and a second end relative to the first end; specifically in this embodiment, the first end, namely the upper end, is located at the end of the support arm close to the working platform, and the second end, namely the lower end, is located at the end of the support arm close to the base.

[0037] It is not difficult to understand that when the height of the working platform 1 is adjusted relative to the base 2, the two arms of the lifting arm perform a scissor difference motion or a shear motion, so that the first end of the first arm 301 and the first end of the second arm 302 move toward each other or away from each other at the same time, and at the same time, the second end of the first arm 301 and the second end of the second arm 302 move toward each other or away from each other; therefore, within the entire height adjustment range of the lifting work platform, the support center of gravity of the lifting component 3 and the center of gravity of the load of the working platform 1 remain relatively unchanged, or the support center of gravity of the lifting component 3 is always maintained on the same vertical line as the load center of gravity of the working platform 1, or the support center of gravity of the lifting component 3 coincides with the load center of gravity of the working platform 1 and will not shift relatively, so that the lifting work platform has good support stability, strong load-bearing capacity, and avoids rollover, with high safety.

[0038] For example, Figure 1 and Figure 4 As shown, at this time, the working platform 1 is at the highest position relative to the base 2, and the supporting center of gravity of the lifting arm 300 and the center of gravity of the load of the working platform 1 are maintained on the vertical center line of the working platform 1; Figure 6 As shown, the working platform 1 is in the middle position of its travel relative to the base 2 , and the supporting center of gravity of the two sets of lifting arms 300 and the center of gravity of the load of the working platform 1 are still maintained on the vertical center line of the working platform 1 .

[0039] Furthermore, in the present embodiment, the lifting arms 300 of the lifting assembly 3 are divided into two groups, and the two groups of lifting arms 300 are respectively arranged on both sides of the bottom of the working platform 1, and are symmetrically arranged; in other embodiments, the lifting arms 300 of the lifting assembly 3 can also be arranged in three groups, four groups, etc., and are arranged in sequence along the length direction of the working platform 1.

[0040] It is understandable 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 movement 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, Figure 1 , Figure 3 and Figure 4 As shown, a synchronization module is provided between the first end of the first arm 301 of each group of lifting arms 300 and the first end of the second arm 302, and / or a synchronization module is provided between the second end of the first arm 301 and the second end of the second arm 302; that is, when there is one synchronization module, it can be provided between the first end of the first arm 301 of each group of lifting arms 300 and the first end of the second arm 302 or between the second end of the first arm 301 and the second end of the second arm 302 of each group of lifting arms 300; when there are two synchronization modules, a synchronization module is provided between the first end of the first arm 301 of each group of lifting arms 300 and the first end of the second arm 302 of each group of lifting arms 300 and between the second end of the first arm 301 and the second end of the second arm 302 of each group of lifting arms 300; further, the synchronization module includes a hollow base, a synchronization mechanism 6 provided in the base and a slide rail provided on the base, wherein the slide rail is a guide long hole opened on the side wall of the base and extending along the length direction of the base, and the guide long hole is connected to the inside of the base.

[0041] Further in the present embodiment, the first end of the first arm 301 and the first end of the second arm 302 of each group of lifting arms 300 are respectively slidably connected to the base through a slide rail, and the synchronization mechanism 6 is used to make the first end of the first arm 301 and the first end of the second arm 302 move toward each other or move away from each other synchronously along the length direction of the slide rail; and / or the second end of the first arm 301 and the second end of the second arm 302 of each group of lifting arms 300 are respectively slidably connected to the base through a slide rail, and the synchronization mechanism 6 is used to make the second end of the first arm 301 and the second end of the second arm 302 move toward each other or move away from each other synchronously along the length direction of the slide rail.

[0042] Specifically, the first end of the first arm 301 and the first end of the second arm 302 of each set of lifting arms 300 are respectively connected to a sliding pin or a sliding shaft that slides in the slide rail on the base; the second end of the first arm 301 and the second end of the second arm 302 of each set of lifting arms 300 are respectively connected to a sliding pin or a sliding shaft that slides in the slide rail on the base.

[0043] It is not difficult to understand that the synchronization module is an independent component. When the synchronization module is arranged between the first end of the first arm 301 of the lifting arm 300 and the first end of the second arm 302, the base of the synchronization module is fixedly connected to the working platform 1 or the base of the synchronization module is a component constituting the working platform 1; when the synchronization module is arranged between the second end of the first arm 301 of the lifting arm 300 and the second end of the second arm 302, the base of the synchronization module is fixedly connected to the base 2 and the base of the synchronization module is a component constituting the base 2.

[0044] For example, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a synchronization module is arranged between the first end of the first arm 301 and the first end of the second arm 302 of each group of lifting arms 300. Specifically, two parallel square metal tubes are connected to the bottom of the working platform 1, and an intermediate connecting tube is connected between the two square metal tubes. The square metal tubes form a first base 100 of the synchronization module. The first base 100 is connected to the working platform 1. The synchronization mechanism 6 of the synchronization module is arranged in the square metal tube. The square metal tube is provided with a first slide rail 101 which is connected to the inside of the square metal tube and extends along the length direction of the square metal tube. The first base 100, the first slide rail 101 on the first base 100 and the synchronization mechanism 6 in the first base 100 together constitute the synchronization between the first end of the first arm 301 and the first end of the second arm 302 of the lifting arm 300. Module; similarly, a synchronization module is arranged between the second end of the first arm 301 and the second end of the second arm 302 of each group of lifting arms 300. Specifically, the base 2 has two parallel square metal tubes, and an intermediate connecting tube is connected between the two square metal tubes. The square metal tubes form a second base 200 of the synchronization module. The second base 200 is connected to the base 2. The synchronization mechanism 6 of the synchronization module is arranged in the square metal tube. The square metal tube is provided with a second slide rail 201 which is connected to the inside of the square metal tube and extends along the length direction of the square metal tube. The second base 200, the second slide rail 201 on the second base 200 and the synchronization mechanism 6 in the second base 200 together constitute a synchronization module between the second end of the first arm 301 and the second end of the second arm 302 of the lifting arm 300.

[0045] Further in this embodiment, in order to synchronize the movement between the first end of the first arm 301 of each lifting arm 300 and the first end of the second arm 302 and to synchronize the movement between the second end of the first arm 301 of each lifting arm 300 and the second end of the second arm 302, as shown in FIG. Figure 4 As shown, a synchronization module is provided between the first end of the first arm 301 and the first end of the second arm 302 of each lifting arm group 300 and between the second end of the first arm 301 and the second end of the second arm 302 of each lifting arm group 300.

[0046] In this embodiment, if Figure 3 and Figure 5 As shown, the electric lifting workbench also includes an electric drive assembly 5, which is connected to the working platform 1 or the base 2. The electric drive assembly 5 is connected to the synchronization mechanism 6 in a transmission manner, and is used to make the synchronization mechanism 6 drive the first end of the first arm 301 of the lifting arm 300 and the first end of the second arm 302 to move synchronously toward each other or move synchronously away from each other, or drive the second end of the first arm 301 of the lifting arm 300 and the second end of the second arm 302 to move synchronously toward each other or move synchronously away from each other. Specifically, the electric drive assembly 5 includes a drive motor 500, a motor controller 501 and a hand controller. The drive motor 500 is a DC motor. The drive motor 500 is electrically connected to the motor controller 501, and the motor controller 501 is electrically connected to the hand controller. The hand controller is installed on the working platform 1, and is provided with an ascending button, a descending button, a switch, etc., which are used to send a control instruction to the motor controller 501 to control the action of the drive motor 500. The drive motor 500 is connected to the synchronization mechanism 6 in a transmission manner, and drives the synchronization mechanism 6 to act after receiving the control instruction, so that the height of the working platform 1 can be adjusted.

[0047] In the implementation of the present application, a synchronization module is arranged between the first end of the first arm 301 of each group of lifting arms 300 and the first end of the second arm 302, and / or a synchronization module is arranged between the second end of the first arm 301 of each group of lifting arms 300 and the second end of the second arm 302, and the synchronization module includes a hollow base, a synchronization mechanism 6 arranged in the base, and a slide rail arranged on the base. The height adjustment of the working platform 1 is achieved by driving the synchronization mechanism 6 through the electric drive component 5; therefore, the operation of the electric lifting workbench is simple and convenient, and the height adjustment of the working platform can be completed by only starting the electric drive component 5; and the synchronization mechanism 6 is arranged in the base of the synchronization module, so that the synchronization mechanism 6 is hidden in the base and not exposed, so that when the height of the working platform 1 is adjusted, the synchronization mechanism 6 can effectively avoid pinching the hands, and the safety is high; moreover, the synchronization mechanism 6 is located in the base of the synchronization module, so that it can avoid damage caused by human accidental contact or accidental collision; furthermore, the synchronization mechanism 6 used to ensure the synchronous sliding of the two arm ends is integrated in the synchronization module for the sliding of the lifting arm 300 end, so that the structure between the synchronization mechanism 6 and the lifting arm 300 end is more compact, and the span of the synchronization mechanism 6 is small, so that the lifting stability of the electric lifting workbench is high.

[0048] Further in this embodiment, the synchronization mechanism 6 includes a first sliding member 600, a second sliding member 601 and a synchronization gear 602. Figure 5 and Figure 7As shown, the first sliding member 600 and the second sliding member 601 move toward or away from each other along the length direction, and the first sliding member 600 is provided with a first tooth portion 603 along the length direction, and the second sliding member 601 is provided with a second tooth portion 604 along the length direction; the synchronous gear 602 is located between the first sliding member 600 and the second sliding member 601 and is rotatably connected to the base, the synchronous gear 602 is respectively meshed with the first tooth portion 603 and the second tooth portion 604, the first sliding member 600 and the second sliding member 601 are respectively connected to the first end of the first support arm 301 and the first end of the second support arm 302 of each group of lifting arms 300, and / or the first sliding member 600 and the second sliding member 601 are respectively connected to the second end of the first support arm 301 and the second end of the second support arm 302 of each group of lifting arms 300; the electric drive component 5 is transmission connected to the synchronous gear 602, for driving the synchronous gear 602 to rotate. Therefore, when the electric drive assembly 5 drives the synchronous gear 602 to rotate so that the working platform 1 rises relative to the base 2, the first sliding member 600 and the second sliding member 601 move toward each other synchronously, the first end of the first arm 301 of the linkage lifting arm 300 and the first end of the second arm 302 move toward each other at the same time, and the second end of the first arm 301 of the linkage lifting arm 300 and the second end of the second arm 302 move toward each other at the same time; conversely, when the electric drive assembly 5 drives the synchronous gear 602 to rotate so that the working platform 1 descends relative to the base 2, the first sliding member 600 and The second sliding member 601 moves synchronously in opposite directions, the first end of the first arm 301 of the lifting arm 300 and the first end of the second arm 302 move in opposite directions at the same time, and the second end of the first arm 301 and the second end of the second arm 302 of the linkage lifting arm 300 move in opposite directions at the same time; because the first tooth portion 603 of the first sliding member 600 and the second tooth portion 604 of the second sliding member 601 are in transmission engagement with the synchronous gear 602, when the end of any arm moves, the end of the other arm is also linked to move synchronously, with good synchronization performance, so that the working platform 1 can be lifted and lowered smoothly.

[0049] In some embodiments, the axial direction of the rotating shaft of the synchronous gear 602 is set to be parallel to the horizontal plane where the working platform 1 is located. That is, the synchronous gear 602 of the synchronous module is arranged horizontally, so that the first tooth portion 603 of the first sliding member 600 and the second tooth portion 604 of the second sliding member 601 are distributed on the upper and lower sides of the synchronous gear 602 in the vertical direction, and the back of the first tooth portion 603 and the back of the second tooth portion 604 are respectively slidably fitted with the top wall and the bottom wall of the slide rail in the base. That is, when the two sliding members are fitted in the slide rail of the base, the slide rail of the base can guide the sliding of the two sliding members, and can prevent the two sliding members from moving horizontally during the sliding process and deviating from or disengaging from the synchronous gear 602, so that the upper and lower ends of the two arms are more stable when sliding.

[0050] Furthermore, in order to synchronize the movements of the two lifting arms 300 of the lifting assembly 3, as shown in FIG. Figure 3 and Figure 5 As shown, the electric lifting workbench also includes a synchronization rod 7, which is arranged between the two groups of lifting arms 300, and the two ends of the synchronization rod 7 are respectively connected to the synchronization gears 602 of the two groups of synchronization modules at the upper ends of the two groups of lifting arms 300. The electric drive assembly 5 is installed on the working platform 1 and its power output end is transmission-connected with the synchronization rod 7. The setting of the synchronization rod 7 can make the power of the electric drive assembly 5 simultaneously transmitted to the synchronization gears 602 of the two groups of lifting arms 300, so that the rotation of the synchronization gears 602 of the two groups of synchronization modules is kept synchronous. The setting of the synchronization rod 7 can also make up for the defects of asynchronism caused by the precision error or assembly error between the two groups of lifting arms 300, thereby further ensuring that the working platform 1 will not tilt during the rising or falling process, and always maintains a horizontal state with good support stability.

[0051] For example, Figure 3 and Figure 5 As shown, the synchronization rod 7 is connected between the two synchronization gears 602 of the two groups of lifting arms 300 below the working platform 1. Specifically, a plug-in hole for the synchronization rod 7 to be plugged in is provided at the center of each synchronization gear 602; the two ends of the synchronization rod 7 are respectively plugged into the plug-in holes of the synchronization gears 602 of the two groups of lifting arms 300 and are circumferentially limited with the plug-in holes. The plug-in hole is a polygonal hole, and the synchronization rod 7 is a polygonal rod adapted thereto. The installation is simple and convenient, and when the synchronization rod 7 rotates, the two synchronization gears 602 can be linked to rotate synchronously, so that the synchronization mechanisms 6 of the two groups of lifting arms 300 can be operated simultaneously.

[0052] Furthermore, in order to ensure synchronization between the two groups of lifting arms 300 , a first pull rod 303 is connected between the two first arms 301 of the two groups of lifting arms 300 , and a first pull rod 304 is connected between the two second arms 302 of the two groups of lifting arms 300 .

[0053] Furthermore, in this embodiment, in order to prevent the two sliding members from excessively moving toward each other and thus damaging the teeth of the synchronous gear 602 or causing internal damage to the electric drive assembly 5, as shown in FIG. Figure 4 , Figure 5 and Figure 7As shown, the first sliding member 600 is provided with a first limiting portion 605 which is against the synchronous gear 602 and is located at the inner end of the first tooth portion 603; the second sliding member 601 is provided with a second limiting portion 606 which is against the synchronous gear 602 and is located at the inner end of the second tooth portion 604. In this way, when the synchronous gear 602 drives the two sliding members to move toward each other until the first limiting portion 605 is against the synchronous gear 602 or the second limiting portion 606 is against the synchronous gear 602, the two sliding members stop moving; at this time, the working platform 1 stays at the highest position. Moreover, the lifting arm 300 can also provide good support force in this position and prevent the working platform 1 from shaking. Similarly, the elongated sliding hole on the inner side wall of the base of the synchronization module also limits the sliding stroke of the sliding member.

[0054] In this embodiment, in order to prevent the working platform 1 from colliding with the base 2 when it descends to the lowest position, a lower travel switch 8 is connected between the working platform 1 and the base 2, and the lower travel switch 8 is electrically connected to the electric drive assembly 5; when the working platform 1 descends to the lowest height or close to the lowest height, the lower travel switch 8 abuts against the working platform 1 or the base 2. Figure 3 As shown, the lower travel switch 8 is connected to the synchronization module at the bottom of the working platform 1. When the working platform 1 descends to the lowest height or close to the lowest height, the lower travel switch 8 abuts against the base 2, thereby triggering the lower travel switch 8 to stop the electric drive assembly 5 from working, thereby avoiding collision between the working platform 1 and the base 2.

[0055] In some embodiments, Figure 1 and Figure 4 As shown, in order to facilitate the placement of the keyboard, a keyboard tray 4 is connected to the side of the work platform 11 close to the user, and the keyboard tray 4 is detachably connected to the bottom of the work platform 1 through a mounting frame; a support pad is connected to the bottom of the keyboard tray 4, and 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 contacts the ground or the table top, which makes the electric lifting workbench more stable when standing.

[0056] 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.

[0057] 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.

[0058] 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: include Work platform; A base that sits on an existing tabletop or countertop; as well as A lifting assembly connected to the working platform and the base for adjusting the height of the working platform relative to the base, the lifting assembly comprising at least one set of lifting arms, each set of lifting arms comprising two arms hinged in the middle in an X shape: a first arm and a second arm, and the first end of the first arm and the first end of the second arm are respectively slidably connected to the working platform, and the second end of the first arm and the second end of the second arm are respectively slidably connected to the base; A synchronization module is provided between the first end of the first support arm and the first end of the second support arm of each group of the lifting arms, and / or a synchronization module is provided between the second end of the first support arm and the second end of the second support arm; the synchronization module comprises a hollow base, a synchronization mechanism arranged in the base and a slide rail arranged on the base; and the first end of the first support arm and the first end of the second support arm of each group of the lifting arms are respectively slidably connected to the base through the slide rail, and the synchronization mechanism is used to make the first end of the first support arm and the first end of the second support arm synchronously move toward each other or move away from each other along the length direction of the slide rail; and / or the second end of the first support arm and the second end of the second support arm of each group of the lifting arms are respectively slidably connected to the base through the slide rail, and the synchronization mechanism is used to make the second end of the first support arm and the second end of the second support arm synchronously move toward each other or move away from each other along the length direction of the slide rail; An electric drive component is connected to the working platform or the base, and the electric drive component is in driving connection with the synchronization mechanism, so that the synchronization mechanism drives the first end of the first branch arm and the first end of the second branch arm of the lifting arm to move toward each other or away from each other synchronously, or drives the second end of the first branch arm and the second end of the second branch arm of the lifting arm to move toward each other or away from each other synchronously.

2. The electric lifting workbench according to claim 1, characterized in that: The synchronization mechanism includes a first sliding member, a second sliding member and a synchronization gear. The first sliding member and the second sliding member move toward or away from each other along the length direction, and the first sliding member is provided with a first tooth portion along the length direction, and the second sliding member is provided with a second tooth portion along the length direction; the synchronization gear is located between the first sliding member and the second sliding member and is rotatably connected to the base, the synchronization gear is respectively engaged with the first tooth portion and the second tooth portion, the first sliding member and the second sliding member are respectively connected to the first end of the first support arm and the first end of the second support arm of each group of the lifting arms, and / or the first sliding member and the second sliding member are respectively connected to the second end of the first support arm and the second end of the second support arm of each group of the lifting arms; the electric drive component is transmission-connected to the synchronization gear for driving the synchronization gear to rotate.

3. The electric lifting workbench according to claim 2, characterized in that: The axial direction of the synchronous gear rotating shaft is parallel to the horizontal plane where the working platform is located.

4. The electric lifting workbench according to claim 3, characterized in that: The lifting assembly includes two groups of lifting arms, a synchronization rod is arranged between the two groups of lifting arms, and the two ends of the synchronization rod are respectively connected to the synchronization gears of the synchronization mechanism of the two groups of lifting arms, and the power output end of the electric drive assembly is connected to the synchronization rod.

5. The electric lifting workbench according to claim 4, characterized in that: The center of the synchronous gear is provided with an inserting hole for inserting the synchronous rod; the two ends of the synchronous rod are respectively inserted into the inserting holes of the synchronous gears of the two groups of lifting arms and are circumferentially limited with the inserting holes.

6. The electric lifting workbench according to claim 4, characterized in that: The synchronization module is arranged between the first end of the first branch arm and the first end of the second branch arm of each group of lifting arms, and between the second end of the first branch arm and the second end of the second branch arm of each group of lifting arms; the two ends of the synchronization rod are respectively connected to the synchronization gear transmission of the synchronization modules at the upper ends of the two groups of lifting arms, and the electric drive assembly is connected to the working platform.

7. The electric lifting workbench according to claim 6, characterized in that: A lower travel switch is connected between the working platform and the base, and the lower travel switch is electrically connected to the electric drive assembly; when the working platform descends to the lowest height or close to the lowest height position, the lower travel switch abuts against the working platform or the base and is triggered to control the electric drive assembly to stop working.

8. The electric lifting workbench according to claim 2, characterized in that: The first sliding member is provided with a first limiting portion which is against and limited by the synchronous gear, and the first limiting portion is located at the inner end of the first tooth portion; the second sliding member is provided with a second limiting portion which is against and limited by the synchronous gear, and the second limiting portion is located at the inner end of the second tooth portion.

9. The electric lifting workbench according to claim 1, characterized in that: A detachable keyboard tray is connected to a side of the work platform close to the user.

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