Lifting worktable

Abstract

The utility model discloses a lifting work table which comprises a work platform, a base and a lifting assembly, the lifting assembly comprises two sets of lifting arms, each set of lifting arms comprises two supporting arms, the middles of the two supporting arms are hinged to form an X shape, the upper ends of the two supporting arms are arranged on the work platform in a sliding fit mode, and the lower ends of the two supporting arms are arranged on the base in a sliding fit mode; at least one synchronous assembly is arranged between the two groups of lifting arms; the synchronous assembly consists of a first pull rod, a second pull rod, a parallelogram rotating structure and a track; the first pull rod is connected with the first ends of the two first supporting arms of the two sets of lifting arms, and the second pull rod is connected with the first ends of the two second supporting arms of the two sets of lifting arms. According to the lifting worktable, the lifting assembly is good in structural stability, high in supporting capacity, good in stability during height adjustment, not prone to shaking and good in user experience feeling.

Description

Technical Field

[0001] The present application relates to the technical field of computer carrying equipment, and specifically to a lifting work table. 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 work table for carrying tablet computers in the related technology, also known as lifting workbench, or desktop computer bracket, etc., is generally placed on the 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 office or alternating between standing and sitting.

[0003] The lifting work table of the related technology, such as the lifting workbench disclosed in the patent application with announcement number CN117481456A previously applied by the applicant of this case, has a structure including a work 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 work 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 work 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 enables the other two relative rotation connection points to move synchronously through the sliding cooperation of the two relative rotation connection points of the parallelogram rotation structure with the track, thereby synchronizing the movement between the two first sliding members and between the two second sliding members.

[0004] During actual use, the inventor discovered that the lifting worktable of the above-mentioned related technology has the following defects: the lifting worktable of the related technology has poor structural stability of the lifting component, resulting in poor supporting capacity, especially when the working platform is at the highest position, it is easy to shake; furthermore, the minimum distance between the upper ends of the two arms of the lifting arm or the lower ends of the two arms is set relatively large, so that the span of the synchronization component is large, and the coordination stability between the synchronization component and the ends of the two arms is relatively poor, resulting in shaking and frustration of the working platform 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 a lifting work table with good structural stability, strong supporting capacity, good stability during height adjustment, not easy to shake and good user experience.

[0006] The technical solution of the present application is to provide a lifting work table having 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 two sets 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] At least one synchronization component, the synchronization component includes a first pull rod, a second pull rod, a parallelogram rotation structure and a track connected to the working platform or the base, and the length direction of the track is perpendicular to the sliding direction of the end of the support arm; the parallelogram rotation structure has two relative first rotation connection points and two relative second rotation connection points; the two first rotation connection points are respectively connected to the first pull rod and the second pull rod, and the two second rotation connection points are respectively slidably connected to the track; the first pull rod is respectively connected to the first ends of the two first support arms of the two groups of lifting arms, and the second pull rod is respectively connected to the first ends of the two second support arms of the two groups of lifting arms; or the first pull rod is respectively connected to the second ends of the two first support arms of the two groups of lifting arms, and the second pull rod is respectively connected to the second ends of the two second support arms of the two groups of lifting arms.

[0011] In some embodiments, the parallelogram rotation structure includes four connecting rods that are sequentially connected end to end and rotate to form a parallelogram.

[0012] In some embodiments, there are two synchronization components, and the two synchronization components are respectively connected to the working platform and the base.

[0013] In some embodiments, a first slide groove is provided on the working platform, and the first end of the first arm and the first end of the second arm of each group of lifting arms are respectively connected to a first slider that slides in the first slide groove; a second slide groove is provided on the base, and the second end of the first arm and the second end of the second arm of each group of lifting arms are respectively connected to a second slider that slides in the second slide groove.

[0014] In some embodiments, the first sliding block and the second sliding block are both provided with guide ribs protruding outward and extending along the sliding direction, and the guide ribs are respectively fitted with the inner peripheral wall of the sliding groove.

[0015] In some embodiments, the lifting work table also includes a power element, which is connected between the work platform and the base and is located on a side close to one of the sets of lifting arms, and is used to provide lifting force for the work platform to rise. The power element is one of a gas spring, a hydraulic cylinder and a linear actuator.

[0016] In some embodiments, a fixed rod is connected between the first arm or the second arm of the two groups of lifting arms, the first end of the power element is rotatably connected to the fixed rod, and the second end of the power element is rotatably connected to the second pull rod or the first pull rod.

[0017] In some embodiments, the lifting work table also includes a locking mechanism, which is connected to the work platform or the base and is used to lock the work platform at any height of its travel; or the locking mechanism is connected to the lifting assembly and is used to lock the work platform at any height of its travel.

[0018] In some embodiments, the locking mechanism includes an elastic pin connected to the first arm of the lifting arm and a locking plate connected to the second arm of the lifting arm, and the locking plate is provided with a plurality of locking holes distributed circumferentially around the hinge axis in the middle of the lifting arm, and a wrench is rotatably connected to the working platform or the base, and the wrench is connected to the elastic pin through a cable, and is used to control the elastic pin to be inserted into or out of the locking hole; or

[0019] The locking mechanism includes a locking pin connected to the working platform or the base, the end of the arm of the lifting arm is connected to a sliding rod that is slidably matched on the working platform or the base, and the sliding rod is provided with a plurality of insert holes distributed at intervals along the longitudinal direction, and the working platform or the base is rotatably connected to a driving handle, and the driving handle is connected to the locking pin through a cable for controlling the locking pin to be inserted into or out of the insert hole; or

[0020] The locking mechanism includes a driving rod rotatably connected to the working platform or the base, the driving rod is provided with a plurality of latching teeth spaced apart in the longitudinal direction, a sliding seat is connected to the second rotating connection point of the parallelogram rotating structure, and a latching pin which is matched and engaged with the latching teeth is connected to the sliding seat; when the driving rod is rotated to a first state, the latching teeth are engaged with the latching pin, and when the driving rod is rotated to a second state, the latching teeth are disengaged from the latching pin.

[0021] In some embodiments, a keyboard tray is detachably connected to a side of the work platform close to the user.

[0022] In summary, compared with the related art, the lifting work table of the present application has the following advantages: the lifting work table is provided with at least one synchronization component between the two groups of lifting arms of the lifting component, and the synchronization component includes a first pull rod, a second pull rod, a parallelogram rotation structure and a track connected to the working platform or the base; the two first rotation connection points of the parallelogram rotation structure are respectively connected to the first pull rod and the second pull rod, so that the first pull rod and the second pull rod can keep moving towards or away from each other at the same time under the synchronization action of the synchronization component; furthermore, the first pull rod and the second pull rod of the synchronization component can keep the first end of the first branch arm and the first end of the second branch arm of each group of lifting arms moving towards or away from each other at the same time, or keep the second end of the first branch arm and the second end of the second branch arm of each group of lifting arms moving towards or away from each other at the same time; the setting of the synchronization component not only keeps the lifting between the two groups of lifting arms synchronized at all times, but also the first pull rod and the second pull rod of the synchronization component are connected to the two groups of lifting arms, so that the structural stability between the two groups of lifting arms is better and the supporting capacity is strong; even when the working platform is at the highest position, it is not easy to shake. In addition, with the joint support of the two groups of lifting arms, not only can the supporting capacity of the working platform meet the requirements, but also the minimum distance between the first end of the first arm and the first end of the second arm of each group of lifting arms, or between the second end of the first arm and the second end of the second arm, can be set smaller, thereby making the span of the synchronization component small and the coordination stability between the synchronization component and the arm end good, which can effectively avoid shaking or stuttering of the working platform when adjusting the height, and provide a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a lifting work table according to some embodiments of the present application.

[0024] Figure 2 This is a schematic diagram from another angle of a lift work table according to some embodiments of the present application.

[0025] Figure 3 It is a schematic cross-sectional structure diagram of a liftable work table according to some embodiments of the present application.

[0026] Figure 4 It is a schematic diagram of the installation structure of a lifting arm of a lifting work table according to some embodiments of the present application.

[0027] Figure 5 This is a schematic diagram of a folded state of a lifting work table according to some embodiments of the present application.

[0028] Figure 6 It is a front schematic diagram of a synchronization component of a lifting work table according to some embodiments of the present application.

[0029] Figure 7It is a schematic diagram of the three-dimensional structure of a synchronization component of a lifting work table according to some embodiments of the present application.

[0030] Figure 8 It is a schematic diagram of Example 1 of the locking mechanism according to some embodiments of the present application.

[0031] Fig. 9 It is a partial schematic diagram of Example 1 of the locking mechanism according to some embodiments of the present application.

[0032] Fig.10 It is a structural schematic diagram of a second embodiment of the locking mechanism according to some embodiments of the present application.

[0033] Fig.11 It is a schematic diagram of the assembly structure of the second embodiment of the locking mechanism according to some embodiments of the present application.

[0034] Fig.12 It is a schematic diagram of Example 3 of the locking mechanism according to some embodiments of the present application.

[0035] Fig.13 It is a schematic diagram of a lifting work table according to other embodiments of the present application.

[0036] Description of reference numerals:

[0037] 1. working platform, 100, first slide, 2. base, 200, second slide, 3. lifting assembly, 300, lifting arm, 301, first support arm, 302, second support arm, 303, fixing rod, 304, first slider, 305, second slider, 306, guide rib, 307, locking plate, 308, lock hole, 309, elastic pin, 4. keyboard tray, 5. power element, 6. synchronization assembly, 600, first rotating connection point, 601, second rotating connection point, 602, track, 603, connecting rod, 604, hinge seat, 605, elongated hole, 606, sliding seat, 607, first pull rod, 608, second pull rod, 7, sliding rod, 700, jack, 701, support, 702, locking pin, 8, driving rod, 800, handle, 801, latch tooth, 802, latch pin, 9, linear actuator. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] See also Figure 1 to Figure 7 As shown, an embodiment of the present application discloses a liftable work table, which is also called a desktop workbench, a desktop lift 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 base, a lower platform, a chassis, etc., and the base 2 is placed on a desktop or table top in the prior art.

[0043] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the lifting assembly 3 includes two groups 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 by 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.

[0044] For example, two hollow metal square tubes are connected to the bottom of the working platform 1, and an intermediate connecting tube is connected between the two metal square tubes. The two hollow metal square tubes are respectively arranged corresponding to the two groups of lifting arms 300, and the inner holes of the metal square tubes form a first slide groove 100. 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 connected to a first slider 304 that slides in the first slide groove 100; similarly, the base 2 has two parallel square metal tubes, and an intermediate connecting tube is connected between the two square metal tubes. The inner holes of the square metal tubes form a second slide groove 200, and 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 connected to a second slider 305 that slides in the second slide groove 200.

[0045] 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.

[0046] It is not difficult to understand that when the height of the working platform 1 is adjusted relative to the base 2, the first arm 301 and the second arm 302 of the lifting arm perform scissor difference motion or shear motion around the rotation axis in the middle thereof, and the two first sliders 304 connected to 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 in the first slide groove 100 at the same time, and at the same time, the two second sliders 305 connected to 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 in the second slide groove 200 at the same time; therefore, within the entire height adjustment range of the lifting work table, 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.

[0047] For example, Figure 1 and Figure 3 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 assembly 3 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 5 As shown, the working platform 1 is in a folded state relative to the base 2 , while the supporting center of gravity of the lifting assembly 3 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 .

[0048] In some embodiments, in order to make the first slider 304 and the second slider 305 at the end of the arm slide more smoothly in the slide groove, the first slider 304 and the second slider 305 are provided with a guide rib 306 protruding outward and extending along the sliding direction. Figure 3 As shown, the guide ribs 306 are respectively fitted with the inner peripheral wall of the slide groove, which can ensure that the first slider 304 and the second slider 305 will not shake laterally along the slide groove when sliding in the slide groove.

[0049] 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.

[0050] 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 the lifting and lowering is not smooth or stuck; in the embodiment of the present application, in order to avoid these defects, the lifting work table also includes at least one synchronization component 6, see Figure 4 , Figure 6 and Figure 7 As shown, the synchronization component 6 includes a first pull rod 607, a second pull rod 308, a parallelogram rotation structure and a track 602 connected to the work platform 1 or the base 2, and the length direction of the track 602 is perpendicular to the sliding direction of the end of the support arm; the parallelogram rotation structure has two relative first rotation connection points 600 and two relative second rotation connection points 601; the two first rotation connection points 600 are rotationally connected to the first pull rod 607 and the second pull rod 608 respectively, and the two second rotation connection points 601 are slidingly connected to the track 602 respectively; because the two second rotation connection points 601 are limited to sliding along the length direction of the track 602, when the two second rotation connection points 601 move toward or away from each other, the two first rotation connection points 600 are linked to move away from or toward each other, so that the first pull rod 607 and the second pull rod 608 move away from or toward each other at the same time, that is, the synchronization component keeps the first pull rod 607 and the second pull rod 608 moving toward or away from each other synchronously.

[0051] In this embodiment, the parallelogram rotation structure includes four connecting rods 603 that are connected end to end and rotate to form a parallelogram. The four connecting rods 603 are equal in length and are connected by four rotating shafts. The rotating shafts at two vertices respectively form two first rotating connection points 600 and two second rotating connection points 601. That is, the first rotating connection point 600 and the second rotating connection point 601 both refer to the rotating vertices of the parallelogram rotation structure, which can be the rotating vertices or hinge points formed by rotating shafts, hinge pins, rotating joints, etc.

[0052] Further, in this embodiment, the first pull rod 607 is respectively connected to the first ends of the two first support arms 301 of the two groups of lifting arms, and the second pull rod 608 is respectively connected to the first ends of the two second support arms 302 of the two groups of lifting arms; or the first pull rod 607 is respectively connected to the second ends of the two first support arms 301 of the two groups of lifting arms, and the second pull rod 608 is respectively connected to the second ends of the two second support arms 302 of the two groups of lifting arms.

[0053] For example, Figure 2 and Figure 4 As shown, when the track 602 of the synchronization component 6 is connected to the bottom of the working platform 1, the synchronization component 6 is set on the working platform 1, and the first end and the second end of the first pull rod 607 are respectively connected to the first ends of the two first support arms 301 of the two groups of lifting arms 300, and the first end and the second end of the second pull rod 608 are respectively connected to the first ends of the two second support arms 302 of the two groups of lifting arms 300; when the track 602 of the synchronization component 6 is connected to the base 2, the synchronization component 6 is set on the base 2, and the first end and the second end of the first pull rod 607 are respectively connected to the second ends of the two first support arms 301 of the two groups of lifting arms 300, and the first end and the second end of the second pull rod 608 are respectively connected to the second ends of the two second support arms 302 of the two groups of lifting arms 300.

[0054] In this embodiment, the first pull rod 607 and the second pull rod 608 of the synchronization component 6 can enable the first end of the first branch arm 301 and the first end of the second branch arm 302 of each group of lifting arms 300 to keep moving toward or away from each other at the same time, or enable the second end of the first branch arm 301 and the second end of the second branch arm 302 of each group of lifting arms 300 to keep moving toward or away from each other at the same time; the setting of the synchronization component 6 not only enables the lifting between the two groups of lifting arms 300 to always remain synchronized, but also the first pull rod 607 and the second pull rod 608 of the synchronization component 6 are connected to the two groups of lifting arms 300, so that the structural stability between the two groups of lifting arms 300 is better and the supporting capacity is stronger; even when the working platform 1 is at the highest position, it is not easy to shake. In addition, with the joint support of the two groups of lifting arms 300, not only can the supporting capacity of the working platform 1 meet the requirements, but also the minimum distance 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, or the second end of the first arm 301 and the second end of the second arm 302 can be set smaller, thereby reducing the span of the synchronization component 6 and improving the coordination stability between the synchronization component 6 and the arm end, effectively preventing the working platform 1 from shaking or stalling when adjusting its height, and providing a good user experience.

[0055] In the above embodiment, the span of the synchronization component 6 refers to the distance between the two first rotation connection points 600 when the first pull rod 607 and the second pull rod 608 move toward each other to the minimum distance; and the distance between the two first rotation connection points 600 when the first pull rod 607 and the second pull rod 608 move away from each other to the maximum distance; in other words, when the synchronization component 6 is at the minimum span, it is smaller than the minimum span of the synchronization component 6 of the related technology, and when the synchronization component 6 is at the maximum span, it is smaller than the maximum span of the synchronization component 6 of the related technology.

[0056] Further in this embodiment, in order to synchronize the movements between the first arm 301 and the second arm 302 of the two sets of lifting arms 300, as shown in FIG. Figure 4 As shown, there are two synchronization components 6, and the two synchronization components 6 are respectively connected to the working platform 1 and the base 2. That is, the synchronization component located on the working platform 1, the first end and the second end of the first tie rod 607 of the synchronization component 6 are respectively connected to the first ends of the two first arms 301 of the two sets of lifting arms 300, and the first end and the second end of the second tie rod 608 are respectively connected to the first ends of the two second arms 302 of the two sets of lifting arms 300. The synchronization component located on the base 2, the first end and the second end of the first tie rod 607 of the synchronization component 6 are respectively connected to the second ends of the two first arms 301 of the two sets of lifting arms 300, and the first end and the second end of the second tie rod 608 are respectively connected to the second ends of the two second arms 302 of the two sets of lifting arms 300.

[0057] 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 the two sets of lifting arms 300 drive the first pull rod 607 and the second pull rod 608 to move toward each other, and the second end of the first arm 301 and the second end of the second arm 302 of the two sets of lifting arms 300 simultaneously drive the first pull rod 607 and the second pull rod 608 to move toward each other; 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 the two sets of lifting arms 300 drive the first pull rod 607 and the second pull rod 608 to move away from each other, and the second end of the first arm 301 and the second end of the second arm 302 of the two sets of lifting arms 300 simultaneously drive the first pull rod 607 and the second pull rod 608 to move away from each other. The setting of the two synchronous components 6 ensures that the working platform 1 will not tilt during the rising or falling process, always maintains a horizontal state, and has good lifting stability.

[0058] For example, Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, the synchronization component 6 is installed on the working platform 1, specifically: a first track extending along the length direction of the middle connecting tube is formed on the middle connecting tube at the bottom of the working platform 1, and the two second rotating connection points 601 of the parallelogram rotating structure are slidably fitted in the first track, and the centers of the first pull rod 607 and the second pull rod 608 are respectively installed with hinge seats 604, and the two first rotating connection points 600 of the parallelogram rotating structure are respectively hinged to the two hinge seats 604; the synchronization component 6 is installed on the base 2, specifically: a second track extending along the length direction of the middle connecting tube is formed on the middle connecting tube of the base 2, and the two second rotating connection points 601 of the parallelogram rotating structure are slidably fitted in the second track, and the centers of the first pull rod 607 and the second pull rod 608 are respectively installed with hinge seats 604, and the two first rotating connection points 600 of the parallelogram rotating structure are respectively hinged to the two hinge seats 604. The middle connecting tube on the working platform 1 and the middle connecting tube on the base 2 are both hollow square tubes, and the first track and the second track are both inner holes of the tubes. In order to make the two second rotating connection points 601 slide more smoothly, a sliding seat 606 is connected to the two second rotating connection points 601, and the sliding seat 606 slides in the inner hole of the middle connecting tube, and the outer wall of the sliding seat 606 slides and fits with the inner wall of the inner hole of the middle connecting tube.

[0059] In some embodiments, the lifting work table further includes a power element 5, which is connected between the work platform 1 and the base 2 and is located on a side close to one of the lifting arms 300, and is used to provide a lifting force for the work platform 1 to rise and to provide a load-bearing or partial load-bearing for the work platform 1. The power element 5 can be a gas spring, a hydraulic cylinder, or a linear actuator 9. The power element 5 is located on a side close to one of the lifting arms 300, so that the torque of the power element 5 is shortened, the locking effect is better, more stable, and does not shake.

[0060] In the embodiments of the present application, Figure 2 and Figure 4 As shown, the power element 5 is a gas spring, which is a self-locking gas spring or a controllable gas spring. The gas spring has a control valve, and a rotating member or a driving member that can drive the gas spring to control the valve to open is connected to the working platform 1 or the base 2. The first end of the power element 5 is rotatably connected to the first arm 301 of the lifting arm 300, and the second end is rotatably connected to the second arm 302 of the lifting arm 300. The 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.

[0061] For example, a fixing rod 303 is connected between the second arms 302 of the two lifting arms 300, the first end of the gas spring is rotatably connected to the fixing rod 303, and the second end of the gas spring is rotatably connected to the second pull rod 608; in other embodiments, a fixing rod 303 may be connected between the first arms 301 of the two lifting arms 300. Two gas springs may be provided, and are respectively provided near the two lifting arms 300.

[0062] In other embodiments, the power element 5 is a gas spring, the first end of the power element 5 is rotatably connected to the work 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 work platform 1 and the second end is rotatably connected to the base 2. There are various connection methods for the power element 5, which can be set according to specific needs.

[0063] In some embodiments, the power element 5 is a linear actuator 9, such as Fig.13 As shown, the first end of the linear actuator 9 is hinged to the second pull rod 608, and the second end is hinged to the fixed rod 303 between the two sets of lifting arms 300. The structure of the linear actuator 9 generally includes a drive motor and an actuator body drivingly connected to the drive motor, and the actuator body has an actuator end that can axially reciprocate relative to the actuator body; the linear actuator 9 can output linear thrust and tension; the linear actuator 9 can also be replaced by a linear motor or an electric push rod.

[0064] It is not difficult to understand that when the power element 5 is a linear actuator 9, the lifting work table is an electric lifting work table, and the linear actuator 9 itself can provide the load-bearing or supporting force of the work platform 1, and there is no need to set up an additional locking mechanism at this time; similarly, for a lifting work table with a lower load-bearing requirement, its power element 5 can use a controllable gas spring or a self-locking gas spring, and the work platform 1 can be kept at a certain height under the self-locking force of the gas spring, and there is no need to set up an additional locking mechanism at this time. For a lifting work table with a higher load-bearing requirement and a gas spring as the power element 5, it is generally equipped with a locking mechanism, which is connected to the work platform 1 or the base 2, and is used to lock the work platform 1 at any height of its travel; or in some embodiments, the locking mechanism can also be connected between the two arms of the lifting arm 300, and is used to lock the work platform 1 at any height of its travel.

[0065] In this embodiment, the structure of the locking mechanism can adopt the following locking method.

[0066] As the first embodiment of the locking mechanism, see Figure 8 and Fig. 9 As shown, the locking mechanism includes an elastic pin 311 connected to the second arm 302 of the lifting arm 300 and a locking plate 307 connected to the first arm 301 of the lifting arm 300, or the locking mechanism includes an elastic pin connected to the first arm 301 of the lifting arm 300 and a locking plate connected to the second arm 302 of the lifting arm 300; and the locking plate 307 is provided with a plurality of locking holes 308 circumferentially distributed around the central hinge axis of the lifting arm 300; the elastic pin 309 generally includes a pin body that can be axially moved to insert into or disengage from the locking hole 308, a spring and a support frame for fixing the pin body, and the spring connects the pin body and the support frame; the locking mechanism also includes The wrench connected to the working platform 1 or the base 2 is rotated, and the wrench is connected to the elastic pin 309 through a cable, which is used to control the pin body of the elastic pin 309 to be inserted into or out of the lock hole 308. In a natural state, the pin body of the elastic pin 309 is inserted into the lock hole 308 under the action of the spring, so that the relative rotation of the first arm 301 and the second arm 302 of the lifting arm 300 is locked, and the height of the working platform 1 remains unchanged; when it is necessary to adjust the height of the working platform 1, the wrench is pulled, and the wrench drives the pin body of the elastic pin 309 to be out of the lock hole 308 through the cable, and the two arms of the lifting arm 300 are unlocked, and the height of the working platform 1 can be adjusted at this time.

[0067] As the second embodiment of the locking mechanism, see Fig.10 and Fig.11As shown, the locking mechanism includes a locking pin 702 connected to the working platform 1 or the base 2, a sliding rod 7 connected to the upper end or the lower end of the support arm is slidably connected to the working platform 1 or the base 2, and the sliding rod 7 is provided with a plurality of spaced-apart sockets 700 along the length direction, and a driving handle is rotatably connected to the working platform 1 or the base 2, and the driving handle is connected to the locking pin 702 through a cable, which is used to control the locking pin 702 to be inserted into or out of the socket 700. Specifically in this embodiment, in order to make the sliding rod 7 slide in the horizontal direction in the slide groove, a support 701 is connected to the tail end of the sliding rod 7, and under the support of the support 701, the sliding rod 7 can slide in the horizontal direction along with the end of the support arm. A bracket is connected to the working platform 1 or the base 2, and a spring is connected between the locking pin 702 and the bracket, and under the action of the spring, the locking pin 702 always has a movement tendency to be plugged into the socket 700; in the locked state, the locking pin 702 is inserted into the socket 700 under the action of the spring, so that the sliding of the sliding rod 7 is locked, and the height of the working platform 1 remains unchanged; when the height of the working platform 1 needs to be adjusted, the driving handle is turned, and the driving handle drives the locking pin 702 to disengage from the socket 700 through the cable, and the sliding rod 7 is unlocked, and the height of the working platform 1 can be adjusted at this time.

[0068] As in the third embodiment of the locking mechanism, see Fig.12 As shown, the locking mechanism includes a driving rod 8 rotatably connected to the working platform 1, and the driving rod 8 is provided with a plurality of spaced apart latching teeth 801 along the longitudinal direction, and a sliding seat 606 is connected to the second rotating connection point 601 of the parallelogram rotating structure, and an elongated hole 605 connected to the slide rail is provided on the side wall of the middle connecting tube at the bottom of the working platform 1, and a latching pin 802 extending out of the elongated hole 605 and engaging with the latching tooth 801 is connected to the sliding seat 606; when the driving rod 8 is rotated to the first state, the latching tooth 801 is engaged with the latching pin 802, and when the driving rod 8 is rotated to the second state, the latching tooth 801 is disengaged from the latching pin 802. Specifically, the two second rotation connection points 601 of the parallelogram rotation structure are connected to a sliding seat 606, and each sliding seat 606 is connected to a latch pin 802. The driving rod 8 is provided with two sections of latch teeth 801 respectively matched with the two latch pins 802. The first end of the driving rod 8 is connected to a handle 800. By rotating the driving rod 8 by the handle 800, the latch teeth 801 can be latched with the latch pin 802, and the height of the working platform 1 is locked; by rotating the driving rod 8 by the handle 800, the latch teeth 801 can be disengaged from the latch pin 802, and the height of the working platform 1 can be adjusted.

[0069] In some embodiments, Figure 1 and Figure 5As shown, in order to facilitate the placement of the keyboard, a keyboard tray 4 is detachably connected to the side of the work platform 1 close to the user, and a support pad is connected to the bottom of the keyboard tray 4. When the work platform 1 is at the lowest position, the bottom plane of the support pad is at the same horizontal height as the bottom plane of the base 2. In this way, when the work platform 1 is at the lowest position, the support pad at the bottom of the keyboard tray 4 contacts the ground or the table top, which makes the standing stability of the lifting work table better.

[0070] 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.

[0071] 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.

[0072] 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. A lifting work table, characterized in that: include Work platform; A base that sits on an existing table or countertop; and 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 two sets 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; At least one synchronization component, the synchronization component includes a first pull rod, a second pull rod, a parallelogram rotation structure and a track connected to the working platform or the base, and the length direction of the track is perpendicular to the sliding direction of the end of the support arm; the parallelogram rotation structure has two relative first rotation connection points and two relative second rotation connection points; the two first rotation connection points are respectively connected to the first pull rod and the second pull rod, and the two second rotation connection points are respectively slidably connected to the track; the first pull rod is respectively connected to the first ends of the two first support arms of the two groups of lifting arms, and the second pull rod is respectively connected to the first ends of the two second support arms of the two groups of lifting arms; or the first pull rod is respectively connected to the second ends of the two first support arms of the two groups of lifting arms, and the second pull rod is respectively connected to the second ends of the two second support arms of the two groups of lifting arms.

2. The lifting work table according to claim 1, characterized in that: The parallelogram rotation structure comprises four connecting rods which are connected end to end in rotation in sequence and form a parallelogram.

3. The lifting work table according to claim 2, characterized in that: There are two synchronization components, and the two synchronization components are respectively connected to the working platform and the base.

4. The lifting work table according to claim 1, characterized in that: A first slide groove is provided on the working platform, and the first end of the first arm and the first end of the second arm of each group of lifting arms are respectively connected to a first slider slidably fitted in the first slide groove; a second slide groove is provided on the base, and the second end of the first arm and the second end of the second arm of each group of lifting arms are respectively connected to a second slider slidably fitted in the second slide groove.

5. The lifting work table according to claim 4, characterized in that: The first sliding block and the second sliding block are both provided with guide convex ribs protruding outward and extending along the sliding direction, and the guide convex ribs are respectively fitted with the inner peripheral wall of the sliding groove.

6. The lifting work table according to claim 1, characterized in that: The lifting work table also includes a power element, which is connected between the work platform and the base and is located on a side close to one of the sets of lifting arms, and is used to provide lifting force for the work platform to rise. The power element is one of a gas spring, a hydraulic cylinder and a linear actuator.

7. The lifting work table according to claim 6, characterized in that: A fixing rod is connected between the first supporting arms or the second supporting arms of the two groups of lifting arms, the first end of the power element is rotatably connected to the fixing rod, and the second end of the power element is rotatably connected to the second pull rod or the first pull rod.

8. The lifting work table according to claim 1, characterized in that: The lifting work table also includes a locking mechanism, which is connected to the work platform or the base and is used to lock the work platform at any height of its travel; or the locking mechanism is connected to the lifting component and is used to lock the work platform at any height of its travel.

9. The lifting work table according to claim 8, characterized in that: The locking mechanism comprises an elastic pin connected to the first arm of the lifting arm and a locking plate connected to the second arm of the lifting arm, and the locking plate is provided with a plurality of locking holes distributed circumferentially around the hinge axis in the middle of the lifting arm, and a wrench is rotatably connected to the working platform or the base, and the wrench is connected to the elastic pin through a cable for controlling the elastic pin to be inserted into or out of the locking hole; or The locking mechanism includes a locking pin connected to the working platform or the base, the end of the arm of the lifting arm is connected to a sliding rod that is slidably matched on the working platform or the base, and the sliding rod is provided with a plurality of insert holes distributed at intervals along the longitudinal direction, and the working platform or the base is rotatably connected to a driving handle, and the driving handle is connected to the locking pin through a cable for controlling the locking pin to be inserted into or out of the insert hole; or The locking mechanism includes a driving rod rotatably connected to the working platform or the base, the driving rod is provided with a plurality of latching teeth spaced apart in the longitudinal direction, a sliding seat is connected to the second rotating connection point of the parallelogram rotating structure, and a latching pin which is matched and engaged with the latching teeth is connected to the sliding seat; when the driving rod is rotated to a first state, the latching teeth are engaged with the latching pin, and when the driving rod is rotated to a second state, the latching teeth are disengaged from the latching pin.

10. The lifting work table according to claim 1, characterized in that: A keyboard tray is detachably connected to a side of the work platform close to the user.

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