LIFTING WORKSTATION

Abstract

A lifting workstation includes a working platform, a base and a lifting assembly. The lifting assembly includes at least one set of lifting arms, each set of lifting arms includes a first arm and a second arm which are pivotally connected at middle to be in an X-shape. Each set of lifting arms includes synchronization module(s) disposed on at least one side of each set of lifting arms, which includes a hollow housing, a synchronization mechanism arranged in the housing and a slideway arranged on the housing. The slideway is in sliding cooperation with the two ends of one same side of the first arm and the second arm, and the synchronization mechanism can make the two ends of one same side of the first arm and the second arm move toward each other or move away from each other synchronously along a length direction of the slideway.

Claims

1. A lifting workstation, comprising: a working platform; a base that sits on an existing desk or an existing working surface; and a lifting assembly configured to adjust a height of the working platform relative to the base, wherein the lifting assembly connects the working platform and the base, the lifting assembly comprises at least one set of lifting arms, each set of lifting arms comprises a first arm and a second arm, the first arm and the second arm are pivotally connected at middle to be in an X-shape, a first end of the first arm and a first end of the second arm are respectively slidably connected to the working platform, and a second end of the first arm and a second end of the second arm are respectively slidably connected to the base; wherein, each set of lifting arms comprises at least one synchronization module, and the at least one synchronization module is arranged between two ends of one same side of the first arm and the second arm of each set of the lifting arms, the two ends of one same side of the first arm and the second arm of each set of the lifting arms comprise the first end of the first arm and the first end of the second arm, as well as the second end of the first arm and the second end of the second arm; the synchronization module comprises a hollow housing, a synchronization mechanism arranged in the housing and a slideway arranged on the housing, the slideway is configured to be in sliding cooperation with the two ends of one same side of the first arm and the second arm, and the synchronization mechanism is configured to make the two ends of one same side of the first arm and the second arm move toward each other or move away from each other synchronously along a length direction of the slideway.

2. The lifting workstation according to claim 1, wherein the synchronization mechanism comprises a first sliding member, a second sliding member and a synchronization gear, the first sliding member and the second sliding member move toward or move away from each other along their length directions, and the first sliding member is provided with a first rack teeth portion along its length direction, and the second sliding member is provided with a second rack teeth portion along its length direction; the synchronization gear is located between the first sliding member and the second sliding member and is rotatably connected to the housing, and the synchronization gear is respectively engaged with the first rack teeth portion and the second rack teeth portion; the first sliding member and the second sliding member are configured to be respectively connected to the two ends of one same side of the first arm and the second arm of each set of the lifting arms.

3. The lifting workstation according to claim 2, wherein a direction of a shaft of the synchronization gear is parallel to a horizontal plane where the working platform is located.

4. The lifting workstation according to claim 3, wherein the lifting assembly comprises two sets of lifting arms, and the lifting workstation further comprises at least one synchronization rod, the synchronization rod is arranged between the two sets of lifting arms, and two ends of the synchronization rod are respectively connected to two synchronization gears of two synchronization mechanisms of the two sets of lifting arms.

5. The lifting workstation according to claim 4, wherein an insertion hole for the synchronization rod to be inserted is disposed at a center of each synchronization gear; both ends of the synchronization rod are respectively inserted into the insertion holes of the two synchronization gears of the two sets of lifting arms and are circumferentially limited with the insertion holes.

6. The lifting workstation according to claim 1, wherein the synchronization modules are arranged both between the first end of the first arm and the first end of the second arm of each set of lifting arms as well as between the second end of the first arm and the second end of the second arm of each set of lifting arms.

7. The lifting workstation according to claim 1, wherein the lifting assembly comprises two sets of lifting arms, and the lifting workstation further comprises a power element, which is connected between the working platform and the base to provide lifting force for the working platform to rise.

8. The lifting workstation according to claim 7, wherein a first end of the power element is rotatably connected to the working platform or the base, and a second end of the power element is rotatably connected to the lifting assembly; or the first end of the power element is rotatably connected to the working platform, and the second end is rotatably connected to the base; or the first end of the power element is rotatably connected to the first arm of one set of lifting arms and the second end of the power element is rotatably connected to the second arm of the same set of lifting arms; wherein the power element is one of a gas spring, a hydraulic cylinder and a linear actuator.

9. The lifting workstation according to claim 8, wherein a first connecting rod is connected between the first arms of the two sets of lifting arms, and a second connecting rod is connected between the second arms of the two sets of lifting arms, the first end of the power element is rotatably connected to the first connecting rod, and the second end of the power element is rotatably connected to the second connecting rod.

10. The lifting workstation according to claim 2, further comprising at least one locking mechanism configured to lock the working platform at various heights.

11. The lifting workstation according to claim 10, wherein the locking mechanism comprises a first pin connected to one arm of one set of lifting arms and a locking plate connected to the other arm of the same set of lifting arms, and the locking plate is provided with a plurality of first pin holes distributed circumferentially around a pivot at middle of the set of lifting arms, and a wrench is rotatably connected to the working platform or the base, and the wrench is connected to the first pin through a cable and is configured to control the first pin to be inserted into or disengaged from the first pin holes.

12. The lifting workstation according to claim 10, wherein the locking mechanism comprises a second pin connected to the working platform or the base, the first sliding member or the second sliding member is provided with a plurality of second pin holes distributed along its length direction at intervals, a driving handle is rotatably connected to the working platform or the base, the driving handle is connected to the second pin through a cable and is configured to control the second pin to insert into or disengaged from the second pin holes.

13. The lifting workstation according to claim 10, wherein the locking mechanism comprises a locking toothed disk coaxially connected to the synchronization gear, and the locking toothed disk is provided with a plurality of limiting notches along its circumferential direction; a bracket is connected to the working platform or the base, a limiting pin which can be inserted into or disengaged from the limiting notches is connected to the bracket, an elastic member is connected to the bracket, the elastic member is connected to the limiting pin and is configured to make the limiting pin constantly have a movement tendency to engage with the limiting notches; an unlocking handle is connected to the working platform or the base, the unlocking handle is connected to the limiting pin and is configured to control the limiting pin to disengage from the limiting notches.

14. The lifting workstation according to claim 2, wherein the first sliding member is provided with a first limiting portion which is limited by the synchronization gear, and the first limiting portion is located at an inner end of the first rack teeth portion; the second sliding member is provided with a second limiting portion which is limited by the synchronization gear, and the second limiting portion is located at an inner end of the second rack teeth portion.

15. The lifting workstation according to claim 1, wherein a detachable keyboard tray is connected to a side of the working platform close to users.

16. The lifting workstation according to claim 1, wherein the synchronization mechanism comprises a first screw rod, a second screw rod and a support, an axis of the first screw rod and an axis of the second screw rod are arranged in parallel and configured to move toward or away from each other along their axial directions; a first rotating block threadedly connected to the first screw rod and a second rotating block threadedly connected to the second screw rod are rotatably connected to the support, the first rotating block and the second rotating block are rotatably matched to rotate at a same angle, and the first screw rod and the second screw rod are configured to be respectively connected to the two ends of one same side of the first arm and the second arm of a same set of lifting arms.

17. The lifting workstation according to claim 1, wherein the synchronization mechanism comprises a first sliding block, a second sliding block and a fixed base, the first sliding block and the second sliding block are configured to move toward or move away from each other along a length direction of a guiding slideway arranged in the housing; the fixed base is connected to the base, and a lead screw is connected to the fixed base, and the lead screw has threads of opposite directions on two sides of extending from the fixed base, the first sliding block and the second sliding block are respectively threadedly connected to two sides, which extend from the fixed base, of the lead screw, and the first sliding block and the second sliding block are configured to be respectively connected to the two ends of one same side of the first arm and the second arm of one set of lifting arms.

18. The lifting workstation according to claim 5, further comprising a power element configured to provide lifting force for the working platform to rise, and a power output end of the power element being connected to the synchronization rod in a transmission manner.

19. The lifting workstation according to claim 18, wherein a lower travel trigger is connected between the working platform and the base, and the lower travel trigger is electrically connected to the power element; when the working platform is lowered to a lowest height position or close to the lowest height position, the lower travel trigger is triggered by abutting against the working platform or the base to control the power element to stop working.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0033] A brief description of drawings, which are incorporated in the description of embodiments, will be provided below to illustrate technical solutions of the present application clearly. Obviously, the drawings described below are merely some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without making inventive efforts.

[0034] FIG. 1 is a schematic structural diagram of a lifting workstation according to one embodiment of the present application.

[0035] FIG. 2 is a schematic diagram of the lifting workstation viewed from another angle according to one embodiment of the present application.

[0036] FIG. 3 is a schematic structural diagram of a bottom of the lifting workstation according to one embodiment of the present application.

[0037] FIG. 4 is a schematic structural diagram of a side cross-section of the lifting workstation according to one embodiment of the present application.

[0038] FIG. 5 is a schematic structural diagram of a cross-section of the lifting workstation according to one embodiment of the present application.

[0039] FIG. 6 is a schematic structural diagram of portion A in FIG. 5.

[0040] FIG. 7 is a schematic diagram of folding the lifting workstation according to one embodiment of the present application.

[0041] FIG. 8 is a schematic diagram of a folded state of the lifting workstation according to one embodiment of the present application.

[0042] FIG. 9 is a schematic diagram of a lifting assembly of the lifting workstation according to one embodiment of the present application.

[0043] FIG. 10 is a schematic diagram of an assembly of two sliding members in a working platform of the lifting workstation according to one embodiment of the present application.

[0044] FIG. 11 is a schematic structural diagram of one implementation of a locking mechanism of the lifting workstation according to one embodiment of the present application.

[0045] FIG. 12 is a schematic diagram from a back view of the locking mechanism in FIG. 11.

[0046] FIG. 13 is a schematic structural diagram of one implementation of the locking mechanism of the lifting workstation in one embodiment of the present application.

[0047] FIG. 14 is a schematic structural diagram of the assembly of the locking mechanism in FIG. 13.

[0048] FIG. 15 is a schematic structural diagram of one implementation of the locking mechanism of the lifting workstation in one embodiment of the present application.

[0049] FIG. 16 is a schematic structural diagram of the assembly of the locking mechanism in FIG. 15.

[0050] FIG. 17 is a schematic structural diagram of the lifting workstation according to one embodiment of the present application.

[0051] FIG. 18 is a schematic structural diagram of a synchronization mechanism of the lifting workstation according to one embodiment of the present application.

[0052] FIG. 19 is a schematic structural diagram of the synchronization mechanism of the lifting workstation in FIG. 17.

[0053] FIG. 20 is a schematic diagram of the synchronization mechanism of the lifting workstation according to one embodiment of the present application.

[0054] FIG. 21 is a schematic structural diagram of the bottom of the lifting workstation according to one embodiment of the present application.

[0055] FIG. 22 is a schematic structural diagram of the assembly of the lifting workstation according to one embodiment of the present application.

DETAILED DESCRIPTION

[0056] First, those skilled in the art should understand that the implementations are only used to explain 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.

[0057] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms connected, connection and the like should be understood in the broadest scope. 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 those in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0058] 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 a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply mean that the first feature is higher in level than the second feature. A first feature being 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.

[0059] The present application is further described in detail below with reference to the drawings and embodiments.

[0060] As shown in FIGS. 1-10, the present application discloses a lifting workstation, which is also called a desktop workstation, a desktop lifting table, etc. The lifting workstation includes a working platform 1, a base 2 and a lifting assembly 3 connecting the working platform 1 and the base 2 for adjusting a height of the working platform 1 relative to the base 2. The working platform 1 is also called a desk top, an upper platform, a board for placing items, etc., the base 2 is also called a lower platform, a base bracket, etc., and the base 2 is placed on a desktop or table top in the prior art.

[0061] As shown in FIGS. 1, 2 and 3, the lifting assembly 3 includes at least one set of lifting arms 300, and each set of lifting arms 300 includes a first arm 301 and a second arm 302, the first arm 301 and the second arm 302 are pivotally connected at middle to be in an X-shape. That is, the first arm 301 and the second arm 302 are crossed at the middle to form an X shape, and the crossing part is rotatably connected by a pivot. A first end of the first arm 301 and a first end of the second arm 302 are respectively slidably connected to the working platform 1, and a second end of the first arm 301 and a second end of the second arm 302 are respectively slidably connected to the base 2.

[0062] It can be understood that the first arm 301 or the second arm 302 may be a rod or plate with a certain length, and have two ends, namely the first end and the second end opposite to the first end. The first end may be named as an upper end, located at the end of the arm closer to the working platform, and the second end may be named as a lower end, located at the end of the arm closer to the base.

[0063] When the height of the working platform 1 is being adjusted relative to the base 2, the two arms of the set of lifting arms perform a scissor 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, making 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 working platform, the support center of gravity of the lifting assembly 3 can be 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 assembly 3 will not be obliquely relatively to the load center of gravity of the working platform 1, so that the lifting workstation has good support stability, strong load-bearing capacity, and can avoid rollover with high safety.

[0064] As shown in FIGS. 1 and 4, the working platform 1 is in the highest position relative to the base 2, and the support center of gravity of the two sets of lifting arms 300 and the center of gravity of the load of the working platform 1 remain on the vertical line of the center of the working platform 1. As shown in FIG. 6, the working platform 1 is in an intermediate position of its travel relative to the base 2, and the support center of gravity of the two sets of lifting arms 300 and the center of gravity of the load of the working platform 1 still remain on the vertical line of the center of the working platform 1. As shown in FIG. 7, the working platform 1 is in a folded state relative to the base 2, and the support center of gravity of the two sets of lifting arms 300 and the center of gravity of the load of the working platform 1 still remain on the vertical line of the center of the working platform 1.

[0065] In some embodiments, the lifting assembly 3 may include two sets of lifting arms 300, and the two sets of lifting arms 300 are respectively arranged on both sides of a bottom of the working platform 1 and are symmetrically arranged. In addition, the lifting assembly 3 may include three or four or more sets of lifting arms 300, which are arranged along the length direction of the working platform 1.

[0066] When the two arms of one set of lifting arms perform scissor motion, the horizontal displacement and rotation angle of the upper ends of the two arms or/and the lower ends of the two arms may not be synchronized or there may be a motion lag. It is easy to cause the deficiencies where the working platform 1 inclines or the lifting and lowering are not smooth or stuck. In order to overcome these deficiencies, each set of lifting arms includes at least one at least one synchronization module, and the at least one synchronization module is arranged between two ends of one same side of the first arm and the second arm of each set of the lifting arms, the two ends of one same side of the first arm and the second arm of each set of the lifting arms include the first end of the first arm and the first end of the second arm, as well as the second end of the first arm and the second end of the second arm.

[0067] In a possible implementation, as shown in FIG. 1, FIG. 3 and FIG. 4, one synchronization module is arranged between the first end of the first arm 301 and the first end of the second arm 302 of each set of lifting arms 300, and/or one synchronization module is arranged 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 arranged between the first end of the first arm 301 and the first end of the second arm 302 of each set of lifting arms 300 or between the second end of the first arm 301 and the second end of the second arm 302 of each set of lifting arms 300. When there are two synchronization modules, one synchronization module may be arranged between the first end of the first arm 301 and the first end of the second arm 302 of each set 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 set of lifting arms 300. In addition, the arrangements of the synchronization modules in different sets of lifting arm in the present application may be the same or different. For different arrangements of synchronization modules in different sets of lifting arms, for example, a first set of lifting arms may include two synchronization mechanisms, and a second set of lifting arms may include one synchronization mechanism; or the first set of lifting arms may include one synchronization mechanism, which is arranged between the first end of the first arm and the first end of the second arm of the first set of lifting arms, and the second set of lifting arms may include one synchronization mechanism, which is arranged between the second end of the first arm and the second end of the second arm of the second set of lifting arms.

[0068] The synchronization module includes a hollow housing, a synchronization mechanism arranged in the housing and a slideway arranged on the housing, the slideway is configured to be in sliding cooperation with the two ends of one same side of the first arm and the second arm, and the synchronization mechanism is configured to make the two ends of one same side of the first arm and the second arm move toward each other or move away from each other synchronously along a length direction of the slideway.

[0069] In a possible implementation, the synchronization module includes a hollow housing, a synchronization mechanism 6 arranged in the housing, and a slideway arranged on the housing. The slideway may be a guiding long hole opened on a side wall of the housing and extending along a length direction of the housing. The guiding long hole is in communication with an inside of the housing. 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 slidably connected to the housing through the slideway. The synchronization mechanism 6 is configured 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 a length direction of the slideway; and/or 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 slidably connected to the housing through the slideway, and the synchronization mechanism 6 is configured 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 slideway.

[0070] 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 may be respectively connected to sliding pins or sliding shafts that slide in the slideway on the housing. The second end of the first arm 301 and the second end of the second arm 302 of each set of lifting arms 300 may be respectively connected to sliding pins or sliding shafts that slide in the slideway on the housing.

[0071] It is not difficult to understand that, with the synchronization module serving as an independent assembly, when one synchronization module is arranged between the first end of the first arm 301 and the first end of the second arm 302 of one set of lifting arm 300, the housing of this synchronization module may be fixedly connected to the working platform 1 or the housing of this synchronization module may be a part of the working platform 1. When one synchronization module is arranged between the second end of the first arm 301 and the second end of the second arm 302 of one set of lifting arms 300, the housing of this synchronization module may be fixedly connected to the base 2 and the housing of this synchronization module may be a part of the base 2.

[0072] For example, as shown in FIGS. 1, 2, 3 and 9, one synchronization module may be arranged between the first end of the first arm 301 and the first end of the second arm 302 of each set 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 two square metal tubes form two first housings 100 of the two synchronization modules. The two first housings 100 are connected to the working platform 1 and the two synchronization mechanisms 6 of the two synchronization modules are arranged in the first housings. Each first housing is provided with a first slideway 101 which is in communication with the inside of the first housing and extends along a length direction of the first housing. Thus, one synchronization module between the first end of the first arm 301 and the first end of the second arm 302 of one set of lifting arms 300 includes the first housing 100, the first slideway 101 arranged on the first housing 100 and the synchronization mechanism 6 arranged in the first housing 100. Similarly, one synchronization module may be arranged between the second end of the first arm 301 and the second end of the second arm 302 of each set 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 two square metal tubes form two second housings 200 of the two synchronization modules. The two second housings 200 are connected to the base 2 and the two synchronization mechanisms 6 of the two synchronization modules are arranged in the second housings. Each second housing is provided with a second slideway 201 that is communication with the inside of the second housing and extends along a length direction of the second housing. Thus, one synchronization module between the second end of the first arm 301 and the second end of the second arm 302 of one set of lifting arms includes the second housing 200, the second slideway 201 arranged on the second housing 200 and the synchronization mechanism 6 arranged in the second housing 200.

[0073] The synchronization module being arranged between the first end of the first arm 301 and the first end of the second arm 302 of each set of lifting arms 300, and/or the synchronization module being arranged between the second end of the first arm 301 and the second end of the second arm 302 of each set of lifting arms, and the synchronization module including the hollow housing, the synchronization mechanism 6 arranged in the housing, and a slideway arranged on the housing, make the synchronization mechanism of the lifting workstation be in the housing of the synchronization module, so that the synchronization mechanism is hidden in the housing and not exposed, so that when the height of the working platform 1 is being adjusted. Therefore, the synchronization mechanism 6 will not pinch users' hands, and the safety can be improved. Moreover, the synchronization mechanism 6 is located in the housing of the synchronization module, so that it can avoid being damaged by human accidental contact or accidental collision. Furthermore, the synchronization mechanism 6 serves as an integrated module in the synchronization module for sliding the end of the arms of the set of lifting arms 300 synchronously, so that the structure between the synchronization mechanism 6 and the end of the lifting arm is more compact, and the overall span of the synchronization mechanism 6 can be smaller, so that the lifting stability of the lifting workstation can be higher.

[0074] In order to synchronize the movement between the first end of the first arm 301 and the first end of the second arm 302 of each set of lifting arms 300 and to synchronize the movement between the second end of the first arm 301 and the second end of the second arm 302 of each set of lifting arms 300, as shown in FIG. 4, the synchronization module is arranged between the first end of the first arm 301 and the first end of the second arm 302 of each set 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 set of lifting arms 300.

[0075] In some embodiments, a possible implementation of the synchronization mechanism is shown in FIGS. 4, 9 and 10. The synchronization mechanism 6 includes a first sliding member 600, a second sliding member 601 and a synchronization gear 602, the first sliding member 600 and the second sliding member 601 can move toward or move away from each other along their length directions. The first sliding member 600 is provided with a first rack teeth portion 603 along its length direction, and the second sliding member 601 is provided with a second rack teeth portion 604 along its length direction. The synchronization gear 602 is located between the first sliding member 600 and the second sliding member 601 and is rotatably connected to the housing. The synchronization gear 602 is respectively engaged with the first rack teeth portion 603 and the second rack teeth portion 604. The first sliding member 600 and the second sliding member 601 are respectively connected to the first end of the first arm 301 and the first end of the second arm 302 of each set 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 arm 301 and the second end of the second arm 302 of each set of lifting arms 300. Therefore, when the working platform 1 rises relative to the base 2, the first end of the first arm 301 and the first end of the second arm 302 of each set of lifting arms 300 move toward each other at the same time, and the second end of the first arm 301 and the second end of the second arm 302 of each set of lifting arms 300 move toward each other at the same time. Conversely, when the working platform 1 descends relative to the base 2, the first end of the first arm 301 and the first end of the second arm 302 of each set of lifting arms 300 move away from each other at the same time, and the second end of the first arm 301 and the second end of the second arm 302 of each set of lifting arms 300 move away from each other at the same time. Since the first rack teeth portion 603 of the first sliding member 600 and the second rack teeth portion 604 of the second sliding member 601 are in transmission meshing with the synchronization 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 raised and lowered smoothly.

[0076] In some embodiments, a direction of a shaft of the synchronization gear 602 is parallel to a horizontal plane where the working platform 1 is located. That is, the synchronization gear 602 of the synchronous module is arranged vertically, so that the first rack teeth portion 603 of the first sliding member 600 and the second rack teeth portion 604 of the second sliding member 601 can be distributed on lower and upper sides of the synchronization gear 602 in the vertical direction, and the back of the first rack teeth portion 603 and the back of the second rack teeth portion 604 may be respectively slidably fitted with guiding slideways arranged on the top wall and the bottom wall inside the housing. That is, when the two sliding members are fitted in the guiding slideways of the housing, the guiding slideways of the housing can guide and limit 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 synchronization gear 602, so that the ends of the two arms are more stable when moving toward or away from each other.

[0077] In some embodiments, a possible implementation of the synchronization mechanism is shown in FIGS. 18 and 19. The synchronization mechanism includes a first screw rod 1200, a second screw rod 1201 and a support 12, an axis of the first screw rod 1200 and an axis of the second screw rod 1201 are arranged in parallel and configured to move toward or away from each other along their axial directions. A first rotating block 1202 threadedly connected to the first screw rod 1200 and a second rotating block 1203 threadedly connected to the second screw rod 1201 are rotatably connected to the support 12. The first rotating block 1202 and the second rotating block 1203 are rotatably matched to rotate at a same angle (for example, through gear teeth meshing). The first screw rod 1200 and the second screw rod 1201 are configured to be respectively connected to the first end of the first arm 301 and the first end of the second arm 302 of each set of lifting arms 300, and/or the first screw rod 1200 and the second screw rod 1201 are respectively connected to the second end of the first arm 301 and the second end of the second arm 302 of each set of lifting arms 300. In some embodiments, the first rotating block 1202 and the second rotating block 1203 may be transmission nuts which are rotatably matched to rotate at a same angle through gear teeth meshing, and the screw rods of the synchronization mechanism are in screw cooperations with the transmission nuts. When the end of the arm drives the screw rod to move, the corresponding transmission nut can rotate in the circumferential direction and drive the other transmission nut to rotate in an opposite direction synchronously, therefore the other end of the same side can move synchronously. Thereby the two arms of each set of lifting arms 300 can be kept in synchronous movement.

[0078] In some embodiments, a possible implementation of the synchronization mechanism is shown in FIG. 20. The synchronization mechanism includes a first sliding block 1301, a second sliding block 1302 and a fixed base 1300, the first sliding block 1301 and the second sliding block 1302 are configured to move toward or move away from each other along a length direction of a guiding slideway arranged in the housing. A horizontally arranged lead screw 13 is connected to the fixed base 1300, and the lead screw 13 has threads of opposite directions on two side of extending from the fixed base 1300. The first sliding block 1301 and the second sliding block 1302 are respectively threadedly connected to two sides, which extend from the fixed base 1300, of the lead screw 13. That is, the first sliding block 1301 and the second sliding block 1302 both have threaded holes 1303 which match the threads of the lead screw. The first sliding block 1301 and the second sliding block 1302 are respectively connected to the first end of the first arm 301 and the first end of the second arm 302 of each set of lifting arms 300, and/or the first sliding block 1301 and the second sliding block 1302 are respectively connected to the second end of the first arm 301 and the second end of the second arm 302 of each set of lifting arms 300. The synchronization mechanism cooperates with the threads of the two sliding members through the lead screw 13, so that the two ends of the same side of the two arms of each set lifting arms 300 keep moving synchronously. The present application does not limit the specific implementation of the synchronization mechanism in the lifting workstation, and the specific implementations of synchronization mechanisms can be the same or different.

[0079] In order to synchronize the movements between the two sets of lifting arms 300 of the lifting assembly 3, as shown in FIG. 3, the lifting workstation further includes at least one synchronization rod 8, which is arranged between the two sets of lifting arms 300. The upper ends of the two sets of lifting arms 300 are both provided with synchronization modules, and the two ends of the synchronization rod 8 are respectively connected to the two synchronization gears 602 of the two synchronization modules. Thus, the rotation of the synchronization gears 602 of the two synchronization modules can be kept synchronous. In addition, the synchronization rod 8 can make up for the defects of asynchronism caused by the precision error or assembly error between the two sets of lifting arms 300, thereby further ensuring that the working platform 1 will not tilt during the rising or falling process, and always maintain a horizontal state with good support stability.

[0080] In a possible implementation, as shown in FIGS. 3, 5 and 6, one synchronization rod 8 is connected between two synchronization gears 602 of the two sets of lifting arms 300 below the working platform 1. Specifically, an insertion hole for the synchronization rod 8 to be inserted is disposed at a center of each synchronization gear 602 and both ends of the synchronization rod 8 are respectively inserted into the two insertion holes of the two synchronization gears 602 of the two sets of lifting arms 300 and are circumferentially limited with the insertion holes. Each insertion hole may be a polygonal hole, and the synchronization rod 8 may be a polygonal rod. It is simple and convenient to install, and when one synchronization gear 602 rotates, the other synchronization gear 602 can be driven to rotate synchronously.

[0081] In some embodiments, the synchronization rod 8 may be installed between the two synchronization gears 602 of the two synchronization modules located on or near the base 2, so that the rotation of the two synchronization gears 602 on or near the base 2 can be kept synchronous. In some embodiments, two synchronization rods 8 may be respectively connected between the two synchronization gears 602 on the working platform 1 and between the two synchronization gears 602 on the base 2. The present application puts no limitation on the number or location of the synchronization rods.

[0082] In order to prevent the two sliding members from over-moving when moving toward each other and damaging the teeth of the synchronization gear 602, as shown in FIG. 10, a first limiting portion 605 is provided on the first sliding member 600, and the first limiting portion 605 is configured to be limited by the synchronization gear 602 by abutting against the synchronization gear 602 at an extreme position of the travel of the first sliding member 600. The first limiting portion 605 is located at the inner end of the first rack teeth portion 603. A second limiting portion 606 is provided on the second sliding member 601, and the second limiting portion 606 is configured to be limited by the synchronization gear 602 by abutting against the synchronization gear 602 at an extreme position of a travel of the second sliding member 601. The second limiting portion 606 is located at the inner end of the second rack teeth portion 604. In this way, when the two sliding members move toward each other until the first limiting portion 605 is against the synchronization gear 602 or the second limiting portion 606 is against the synchronization gear 602, the two sliding members stop moving and the working platform 1 stays at the highest position. Moreover, the lifting arm 300 can provide good support in this position and prevent the working platform 1 from shaking. Similarly, the guiding long hole or the guiding slideway can also limit the sliding travels of the sliding members.

[0083] In some embodiments, the lifting assembly 3 includes two sets of lifting arms 300, and the lifting workstation further includes a power element 5, which is connected between the working platform 1 and the base 2 to provide a lifting force for the working platform 1 to rise. In addition, the power element 5 can enhance the load-bearing capacity of the working platform 1. Specifically, the power element 5 may be located at the midpoint of the two sets of lifting arms 300, or closer to one of the sets of lifting arms 300. The power element 5 may be a gas spring, a hydraulic cylinder, or a linear actuator 11. The power element 5 is located at the position closer to one of the two sets of lifting arms 300, so that the torque of the power element 5 is shortened, which improves a locking effect (if any) of the power element 5. Therefore, the lifting workstation can be more stable, and does not shake. In some embodiments, the working platform may be lifted by human power of the users.

[0084] In some embodiments, as shown in FIGS. 2-7, the power element 5 may be a gas spring, which is a self-locking gas spring and has a control valve. A rotating member or a driving member that can drive the gas spring to control the valve to open may be connected to the working platform 1 or the base 2. A first end of this power element 5 is rotatably connected to the first arm 301 of one set of lifting arms 300, and a second end is rotatably connected to the second arm 302 of the same set of lifting arms 300. This power element 5 can drive the first arm 301 of the lifting arm 300 to rotate relative to the second arm 302, thereby driving the working platform 1 to rise.

[0085] In some embodiments, as shown in FIGS. 2 and 9, the power element 5 may be a gas spring, and a first connecting rod 303 is connected between the two first arms 301 of the two sets of lifting arms 300, and a second connecting rod 304 is connected between the two second arms 302 of the two sets of lifting arms 300. The first end of the power element 5 is rotatably connected to the first connecting rod 303, and the second end of the power element 5 is rotatably connected to the second connecting rod 304. Further, a first swing arm 305 extending approximately perpendicularly to the first connecting rod 303 is connected to the first connecting rod 303, and a second swing arm 306 extending approximately perpendicularly to the second connecting rod 304 is connected to the second connecting rod 304, and both ends of the gas spring are respectively rotatably connected to the first swing arm 305 and the second swing arm 306.

[0086] In some embodiments, the power element 5 may be a gas spring, the first end of the power element 5 is rotatably connected to the working platform 1 or the base 2, and the second end is rotatably connected to the first arm 301 or the second arm 302 of the lifting assembly 3; or the first end of the power element 5 is rotatably connected to the working platform 1 and the second end is rotatably connected to the base 2. There are various connection implementations for the power element 5, which can be set according to specific needs.

[0087] In some embodiments, the power element 5 may be a linear actuator 11, as shown in FIG. 17. The first end of the power element 5 is pivotally connected to the first swing arm 305 on the first connecting rod 303, and the second end of the power element 5 is pivotally connected to the second swing arm 306 on the second connecting rod 304. The linear actuator 11 generally includes a drive motor and an actuator body transmission-connected to the drive motor, the actuator body has an actuator end that can axially reciprocate relative to the actuator body, the actuator end is pivotally connected to the first swing arm 305, and a tail end of the actuator body is pivotally connected to the second swing arm 306. The linear actuator 11 can output linear pulling force and pushing force. The linear actuator 11 may be a linear motor or an electric push rod.

[0088] In some embodiments, as shown in FIGS. 21 and 22, a power output end of the power element may be connected to the synchronization rod in a transmission manner. A lower travel trigger is connected between the working platform and the base, and the lower travel trigger is electrically connected to the power element. When the working platform is lowered to the lowest height or close to the lowest height position, the lower travel trigger is triggered by abutting against the working platform or the base to control the power element to stop working. Specifically, the power element 5 includes a drive motor 500, a motor controller 501 and a user controller. The drive motor 500 may be 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 user controller. The user controller may be installed on the working platform 1, and may be provided with an ascending button, a descending button, an on/off button, etc. Configured to send control instructions 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.

[0089] In order to synchronize the movements of the two lifting arms 300 of the lifting assembly 3, as shown in FIGS. 21 and 22, the power output end of the power element 5 is connected to the synchronization rod 8. The synchronization rod 8 can simultaneously transmit the power of the power element 5 to the two synchronization gears 602 of the two sets of lifting arms 300, so that the rotation of the two synchronization gears 602 of the two synchronization modules remains synchronized. The synchronization rod 8 can additionally make up for the defects of asynchronism caused by the precision errors or assembly errors between the two 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.

[0090] When the power element 5 is a linear actuator 11, the lifting workstation is an electric lifting workstation, and the linear actuator 11 itself can provide the load-bearing or supporting force of the working platform 1, and there is no need to set up an additional locking mechanism. Further, for the lifting workstation with lower load-bearing requirements, its power element 5 can use a controllable gas spring or a self-locking gas spring, and the self-locking force of the gas spring can keep the working platform 1 at a certain height. For the lifting workstation with higher load-bearing requirements and using a gas spring as the power element 5, the lifting workstation may include at least one locking mechanism configured to lock the working platform at various heights. The locking mechanism can be connected to the working platform 1 and/or the base 2; or in some embodiments, the locking mechanism may be connected between the two arms of one set of lifting arms 300.

[0091] A possible implementation of the locking mechanism is shown in FIGS. 11 and 12. The locking mechanism may include a first pin 309 connected to the second arm 302 of the lifting arms 300 and a locking plate 307 connected to the first arm 301 of the lifting arms 300. In some embodiments, the locking mechanism may include a first pin 309 connected to the first arm 301 of one set of lifting arms 300 and a locking plate 307 connected to the second arm 302 of the same set of lifting arms 300. The locking plate 307 is provided with a plurality of first pin holes 308 circumferentially distributed around a pivot at middle of the set of lifting arms 300. The first pin 309 may include a pin body that can be axially moved to insert into or disengage from the first pin holes 308, a spring and a support frame for fixing the pin body. The spring connects the pin body and the support frame. The locking mechanism further includes a wrench 310 rotatably connected to the working platform 1 or the base 2. The wrench 310 may be connected to the first pin 309 through a cable and is configured to control the first pin 309 to be inserted into or disengaged from the first pin holes 308. Generally, the first pin 309 is inserted into and kept stably in one of the first pin holes 308 with the effect of the spring, so that the relative rotation between the first arm 301 and the second arm 302 of the set of lifting arms 300 is locked, and the height of the working platform 1 remains unchanged. When the users want to adjust the height of the working platform 1, the wrench 310 can be pulled, and the wrench 310 drives the pin body of the first pin 309 to be out of the first pin hole 308 through the cable, and the two arms of the set of lifting arms 300 are unlocked, thus making the height of the working platform 1 adjustable.

[0092] A possible implementation of the locking mechanism is shown in FIGS. 13 and 14. The locking mechanism may include a second pin 9 connected to the working platform 1 or the base 2. The first sliding member 6 or the second sliding member 7 is provided with a plurality of second insertion holes 901 distributed along its length direction at intervals. A driving handle 900 is rotatably connected to the working platform 1 or the base 2. The driving handle 900 is connected to the second pin 9 through a cable and is configured to control the second pin 9 to be inserted into or disengaged from the insertion holes 901. The second pin 9 may include a pin body, a spring and a support frame. The support frame is connected to the working platform 1 or the base 2. The pin body can slide axially and always has a tendency to be inserted into and kept in one of the insertion holes 901 with the effect of the spring. In the locked state, the second pin 9 is inserted into and kept in one of the insertion holes 901 with the effect of the spring, so that the sliding of the sliding members can be locked and the height of the working platform 1 remains unchanged. When the users want to adjust the height of the working platform 1, the driving handle 900 is rotated, and the driving handle 900 drives the pin body of the second pin 9 to be out of the second insertion holes 901 through the cable, and the locked sliding member can be unlocked, thus making the height of the working platform 1 adjustable.

[0093] A possible implementation of the locking mechanism is shown in FIGS. 15 and 16. The locking mechanism may include a locking toothed disk 10 coaxially connected to the synchronization gear 602, and the locking toothed disk 10 is provided with a plurality of limiting notches 1000 along its circumferential direction. A bracket 1001 is connected to the working platform 1 or the base 2. A limiting pin 1003 which can be inserted into or disengaged from the limiting notches 1000 is connected to the bracket 1001. An elastic member 1004 is connected to the bracket 1001, and the elastic member 1004 is connected to the limiting pin 1003 and is configured to make the limiting pin 1003 constantly have a movement tendency to engage with the limiting notches 1000. An unlocking handle 1007 is connected to the working platform 1 or the base 2, and the unlocking handle 1007 is connected to the limiting pin 1003 and is configured to control the limiting pin 1003 to disengage from the limiting notches 1000. Specifically, the limiting pin 1003 is horizontally slidably inserted in a sliding hole 1002 disposed on the bracket 1001, and the elastic member 1004 may be a coil spring. A first end of the elastic member 1004 is connected to a hook 1005 disposed on the bracket 1001, a second end of the elastic member 1004 is connected to the limiting pin 1003. The unlocking handle 1007 is connected to the limiting pin 1003 through a rod 1006 or a cable, which can drive the limiting pin 1003 to disengage from the limiting notches 1000 of the locking toothed disc 10. When the working platform 1 is unlocked in height, the locking toothed disk 10 is allowed to rotate, and the synchronization gear 602, which is connected to the locking toothed disk 10, will be allowed to rotate driven by the rack teeth portions of the sliding members accordingly. When the limiting pin 1003 is engaged with one of the limiting notches 1000 of the locking toothed disk 10, the locking toothed disk 10 is not allowed to rotate, and the synchronization gear 602 will not be allowed to rotate either, thus making the sliding of the sliding member stopped and the height of the working platform 1 locked. When the users want to adjust the height of the working platform 1, the unlocking handle 1007 drives the limiting pin 1003 to disengage from the limiting notch 1000 of the locking toothed disk 10, thus making the locking toothed disk 10 unlocked and the height of the working platform 1 adjustable. The unlocking handle 1007 can be slidably connected or rotatably connected to the working platform 1 or the base 2.

[0094] In some embodiments, as shown in FIGS. 1 and 8, in order to facilitate the placement of the keyboard, a keyboard tray 4 is connected to a side of the working platform 1 close to the users and the keyboard tray 4 is detachably connected to the bottom of the working platform 1 through a mounting frame 7. A supporting pad is connected to a bottom of the keyboard tray 4, and when the working platform 1 is at the lowest position, the bottom plane of the supporting pad is at the same horizontal height as the bottom plane of the base 2. In this way, when the working platform 1 is at the lowest position, the supporting pad at the bottom of the keyboard tray 4 is in contact with the ground or the existing table top or desk top or an existing working surface, which makes the standing stability of the lifting workstation better.

[0095] 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 should not be understood as a limitation on the present application.

[0096] The terms one embodiment, some embodiments, specifically, example or implementation etc. mean that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example or implementation are included in at least one embodiment or example or implementation 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 any one or more embodiments or examples in a suitable manner. 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.

[0097] The above are only specific implementations 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.