CN220001144U

CN220001144U - Table top workbench

Info

Publication number: CN220001144U
Application number: CN202321656767.0U
Authority: CN
Inventors: 项乐宏; 邵同旺; 张赞
Original assignee: Loctek Ergonomic Technology Co Ltd
Current assignee: Loctek Ergonomic Technology Co Ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-11-14
Anticipated expiration: 2033-06-28

Abstract

The utility model discloses a desktop workbench, which comprises an upper platform, a lower platform and at least one group of lifting arms, wherein the upper platform is provided with a plurality of lifting arms; each group of lifting arms comprises two supporting rods with the middle parts hinged in an X shape: the first support rod and the second support rod are connected with each other in a rotatable manner, and the second end of the second connecting rod is connected with the second support rod in a rotatable manner; the lower platform, the first connecting rod, the second connecting rod and the second supporting rod form a parallelogram structure together; the first end of the elastic element is rotatably connected with the lower platform, and the second end of the elastic element is rotatably connected with the first connecting rod. The tabletop workbench enables the elastic element to provide enough lifting force or assisting force to enable the upper platform to ascend or unfold from the lowest position, and the structure is more compact when the upper platform is at the lowest position.

Description

Table top workbench

Technical Field

The utility model relates to the technical field of computer bearing equipment, in particular to a desktop workbench.

Background

With the continuous development of society, flat panel displays, tablet computers and the like are becoming more and more popular in ordinary families, and a bracket matched with the flat panel displays, the tablet computers and the like is generated. The related art desktop workbench for carrying a tablet personal computer, which is also called a lifting workbench, a desktop computer bracket or the like, is generally placed on a desktop or a table top, and can be lifted and adjusted in height when in use, so as to meet the requirements of a healthy office mode that a user stands for office or stands for alternate office.

The desktop lifting workbench of the related art generally comprises a lower platform, an upper platform and an X-shaped lifting arm arranged between the lower platform and the upper platform, wherein the lifting arm comprises two struts with middle parts hinged to form an X shape: the upper end of the first supporting rod is rotatably connected with the upper platform, and the lower end of the first supporting rod is in sliding fit on the lower platform; the lower end of the second supporting rod is rotatably connected with the lower platform, and the upper end of the second supporting rod is in sliding fit with the upper platform; the lifting workbench further comprises an elastic element, wherein the elastic element is generally a gas spring, one end of the gas spring is connected with the upper platform, the other end of the gas spring is connected with the lifting arm, and the gas spring is used for providing lifting force for lifting the upper platform and counteracting or partially counteracting the bearing of the upper platform. The lifting workbench of the related art controls the action of the gas spring through the brake cable and the spanner connected to the upper platform, so that the height of the upper platform can be adjusted.

The inventor finds that the lifting workbench of the related art has the following defects in the actual use process: one end of an elastic element of the lifting workbench in the related art is connected with the upper platform, and the other end of the elastic element is directly connected with the lifting arm; in the unfolded state of the upper platform, the elastic element provides the lifting force of the upper platform; however, when the upper platform is at the lowest position, the elastic element is in an approximately horizontal state, and the upward lifting force provided by the elastic element is very weak, so that a user is required to apply acting force to manually lift the upper platform upwards by a certain height, or other power assisting elements are added to provide power assistance when the upper platform is lifted from the lowest position, and the operation is very inconvenient; particularly for an ultrathin lifting workbench, after the upper platform is folded, the height of the upper platform is very low, and the elastic element is in an approximately horizontal state, so that when the upper platform ascends from the lowest position, the elastic element can hardly drive the lifting arm to rotate, and the upper platform can not automatically ascend or the ascending speed is too slow, so that the user experience is poor.

Disclosure of Invention

The utility model aims to overcome the defects of the related art and provide the desktop workbench which enables the elastic element to provide enough lifting force or assistance to enable the upper platform to ascend or unfold from the lowest position and has a more compact structure when the upper platform is at the lowest position.

The technical scheme of the utility model is that a desktop workbench with the following structure is provided: it comprises

The lifting arm comprises an upper platform, a lower platform and at least one group of lifting arms, wherein the lifting arms are connected with the upper platform and the lower platform and are used for adjusting the height of the upper platform relative to the lower platform; each group of lifting arms comprises two supporting rods with the middle parts hinged in an X shape: the upper end of the first supporting rod is rotatably connected with the upper platform, and the lower end of the first supporting rod is in sliding fit on the lower platform; the lower end of the second supporting rod is rotatably connected with the lower platform, and the upper end of the second supporting rod is in sliding fit with the upper platform;

the connecting rod mechanism is arranged between the lifting arm and the lower platform and comprises a first connecting rod and a second connecting rod, the first connecting rod is arranged in parallel with the second supporting rod, the first end of the first connecting rod is rotatably connected with the lower platform, the second end of the first connecting rod is rotatably connected with the first end of the second connecting rod, and the second end of the second connecting rod is rotatably connected with the second supporting rod; the lower platform, the first connecting rod, the second connecting rod and the second supporting rod jointly form a parallelogram structure;

the first end of the elastic element is rotatably connected with the lower platform, and the second end of the elastic element is rotatably connected with the first connecting rod; and when the upper platform is at the lowest position, the axis of the elastic element or the extension line of the axis is not parallel or not coincident with the connecting line of the rotating connecting points at the two ends of the first connecting rod.

In some embodiments, the rotational connection point of the second strut to the lower platform is set to a first rotational connection point, the rotational connection point of the first link to the lower platform is set to a second rotational connection point, the rotational connection point of the first link to the second link is set to a third rotational connection point, and the rotational connection point of the second link to the second strut is set to a fourth rotational connection point; horizontal projections of the first rotating connecting point, the second rotating connecting point, the third rotating connecting point and the fourth rotating connecting point on a vertical plane are sequentially arranged in a surrounding mode to form a parallelogram.

In some embodiments, the distance from the rotational connection point of the elastic element to the first link to the third rotational connection point is less than the distance from the rotational connection point of the elastic element to the first link to the second rotational connection point.

In some embodiments, the resilient element has a lower height than the second rotational connection point and the second rotational connection point has a lower height than the first rotational connection point.

In some embodiments, the perpendicular projection of the resilient element is located between and does not overlap the perpendicular projection of the second strut and the perpendicular projection of the first link.

In some embodiments, the height of the rotational connection point of the second link and the second strut to the lower platform is greater than the height of the rotational connection point of the second strut and the first strut to the lower platform.

In some embodiments, a support seat is connected to one side of the lower platform, which is close to the second supporting rod, and the support seat is sequentially provided with a first connecting hole and a second connecting hole from top to bottom, a first end of the first connecting rod is hinged to the first connecting hole, and a first end of the elastic element is hinged to the second connecting hole.

In some embodiments, the lifting arms are two groups, the two groups of lifting arms are respectively arranged at two sides of the bottom of the upper platform, and the two connecting rod mechanisms are respectively arranged corresponding to the two groups of lifting arms.

In some embodiments, the table top lift table further comprises a locking mechanism for locking the upper platform at different heights of its travel.

In summary, compared with the related art, the desktop workbench has the following advantages:

the desktop workbench is characterized in that a connecting rod mechanism is arranged between a lifting arm and a lower platform, and a first connecting rod of the connecting rod mechanism rotates to synchronously rotate and unfold or fold through a second supporting rod of a second connecting rod linkage lifting arm, so that an upper platform ascends or descends; the first connecting rod and the second connecting rod of the connecting rod mechanism and the second supporting rod of the lower platform and the lifting arm form a rotatable parallelogram structure together; in the synchronous pivoted in-process of first connecting rod rotation linkage second branch, first connecting rod and second branch remain parallel state throughout, and the two mutually noninterfere, because of the force of elastic component is on the first connecting rod and not directly act on the second branch, consequently the rotation folding or the expansion of second branch do not receive the restriction of elastic component mounted position to can fold the upper platform to the position that is close to the lower platform, thereby make elevating platform under folding state or the upper platform be in the structure compacter between the lower platform when minimum, can reduce the packing volume, practice thrift the packaging cost.

In addition, when the upper platform is at the lowest position, the axis or the extension line of the axis of the elastic element is not parallel or not coincident with the connecting lines of the rotating connecting points at the two ends of the first connecting rod, namely, when the upper platform is at the lowest position, an included angle is formed between the axis or the extension line of the axis of the elastic element and the connecting lines of the rotating connecting points at the two ends of the first connecting rod in an inclined mode, so that when the upper platform ascends from the lowest position, the force of the elastic element is mostly converted into the moment of the rotation of the first connecting rod, and the first connecting rod provides enough lifting force for the lifting arm through the second connecting rod to enable the lifting arm to rotate and expand. The tabletop workbench enables the elastic element to provide enough lifting force or assistance to enable the upper platform to ascend or unfold upwards from the lowest position.

Drawings

Fig. 1 is a schematic view of a table top according to some embodiments of the utility model.

FIG. 2 is another angular schematic view of a table top table according to some embodiments of the utility model.

Fig. 3 is a schematic side view of a table top according to some embodiments of the utility model.

Fig. 4 is a schematic view of a connection structure of a link mechanism of a table top work table according to some embodiments of the utility model.

Fig. 5 is a schematic view of another angular configuration of a linkage mechanism of a table top according to some embodiments of the utility model.

Fig. 6 is a schematic side view of a linkage mechanism of a table top according to some embodiments of the utility model.

Fig. 7 is a schematic view of a partial structure of an upper platform of a tabletop workbench according to some embodiments of the utility model.

Fig. 8 is a partial schematic view of a locking mechanism of a table top work station according to some embodiments of the utility model.

Reference numerals illustrate:

1. the upper platform, 100, the frame, 101, the arc-shaped groove, 2, the lower platform, 3, the lifting arm, 300, the first supporting rod, 301, the second supporting rod, 302, the locking plate, 303, the locking groove, 4, the link mechanism, 400, the first connecting rod, 401, the second connecting rod, 402, the supporting seat, 403, the first rotating connecting point, 404, the second rotating connecting point, 405, the third rotating connecting point, 406, the fourth rotating connecting point, 5, the elastic element, 6, the spanner, 600, the rotating rod, 7, the rotating plate, 700, the locking pin, 701, the driving post, 8, the driving frame, 800, the driving arm, 801, the inclined long hole, 802 and the hook.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the embodiments of the present utility model, and are not intended to limit the protection scope of the embodiments of the present utility model. Those skilled in the art can adapt it as desired to suit a particular application.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The utility model will be described in further detail with reference to the drawings and the specific examples.

Referring to fig. 1 to 8, the embodiment of the utility model discloses a table top workbench, which is also called a table top lifting workbench, a table top lifting table and the like, and structurally comprises an upper platform 1, a lower platform 2 and at least one group of X-shaped lifting arms 3 which are connected with the upper platform 1 and the lower platform 2 and are used for adjusting the height of the upper platform 1 relative to the lower platform 2; wherein, the upper platform 1 is also called a table board, the bottom of the table board is connected with a frame 100, and the lower platform 2 is also called a base; each group of lifting arms 3 comprises two struts with the middle parts hinged to form an X shape: the upper end of the first supporting rod 300 is rotatably connected with a bracket at the bottom of the upper platform 1, and the lower end of the first supporting rod 300 is in sliding fit on the lower platform 2; the lower end of the second supporting rod 301 is rotatably connected with the lower platform 2, and the upper end of the second supporting rod 301 is in sliding fit on a bracket at the bottom of the upper platform 1; the lifting arm 3 enables the upper platform 1 to be always in a horizontal state when the upper platform 1 is lifted or lowered relative to the lower platform 2.

In this embodiment, as shown in fig. 2, the lifting arms 3 are two groups, and are distributed along the length direction of the upper platform 1 and located at two sides of the bottom of the upper platform 1; two sides of the bottom frame 100 of the upper platform 1 are connected with two upper sliding rails which are arranged in parallel, and the lower platform 2 is connected with two lower sliding rails which are arranged in parallel; the two upper sliding rails are connected with upper hinging seats, and the two lower sliding rails are connected with lower hinging seats; the upper ends of the second supporting rods 301 of the two groups of lifting arms 3 are respectively hinged with the two upper hinging seats; the lower ends of the first supporting rods 300 of the two groups of lifting arms 3 are respectively hinged with two lower hinging seats; in the embodiment, the upper slide rail and the lower slide rail are two-section slide rails or three-section slide rails; the first and second struts 300 and 301 of the two sets of lifting arms 3 perform a scissor-like telescopic motion when the upper platform 1 is raised or lowered relative to the lower platform 2.

The novel desktop workbench of the embodiment further comprises a keyboard support, and the keyboard support is connected to one side, close to a user, of the upper platform 1 through a mounting seat.

Referring to fig. 1, 3-6, the desktop workbench of the embodiment further includes an elastic element 5 connected to the lower platform 2 and a link mechanism 4 disposed between the lifting arm 3 and the lower platform 2, and the link mechanism 4 includes a first link 400 and a second link 401, where the first link 400 is disposed parallel to the second strut 301, and a first end of the first link 400 is rotatably connected to the lower platform 2, a second end of the first link 400 is rotatably connected to a first end of the second link 401, and a second end of the second link 401 is rotatably connected to the second strut 301; the lower platform 2, the first connecting rod 400, the second connecting rod 401 and the second supporting rod 301 together form a parallelogram structure; the first end of the elastic element 5 is rotatably connected with the lower platform 2, and the second end is rotatably connected with the first connecting rod 400; and when the upper platform 1 is at the lowest position, the axis or the extension line of the axis of the elastic element 5 is not parallel or not coincident with the connecting line of the rotation connection points at the two ends of the first connecting rod 400. The elastic element 5 of the present embodiment is a gas spring capable of outputting a constant elastic force, and the elastic element 5 outputs a linear pushing force, and the direction of the pushing force coincides with the axial direction of the elastic element 5. In this embodiment, the rotational connection between the components, for example, the two ends of the first link 400 are respectively connected with the lower platform 2 and the second link 401 in a rotational manner, or the second link 401 is connected with the second strut 301 in a rotational manner, or the two ends of the elastic element 5 are respectively connected or hinged by a rotation shaft or a hinge pin.

In other embodiments, the elastic element 5 may also be an electric push rod or a linear motor.

In the present embodiment, the link mechanisms 4 are provided in two, and are provided corresponding to the two sets of the lifting arms 3, respectively. And the number of the elastic elements 5 is two, and the elastic elements are respectively arranged corresponding to the two link mechanisms 4. This makes the lifting of the upper platform 1 smoother, and when the upper platform 1 is lifted upwards at the lowest position, the two elastic elements 5 can provide enough lifting force to enable the upper platform 1 to automatically lift.

In this embodiment, as shown in fig. 3 to 7, the desktop workbench is provided with a link mechanism 4 between the lifting arm 3 and the lower platform 2, and the rotation of a first link 400 of the link mechanism 4 can be linked with the synchronous rotation of a second supporting rod 301 of the lifting arm 3 through a second link 401 to expand or fold, so that the upper platform 1 is lifted or lowered; the first connecting rod 400 and the second connecting rod 401 of the connecting rod mechanism 4 and the second supporting rod 301 of the lower platform 2 and the lifting arm 3 form a rotatable parallelogram structure together; in the process of rotating the first connecting rod 400 to rotationally link the second supporting rod 301 to synchronously rotate, the first connecting rod 400 and the second supporting rod 301 are always kept in a parallel state and are not interfered with each other, and the force of the elastic element 5 acts on the first connecting rod 400 instead of directly acting on the second supporting rod 301, so that the rotation folding or unfolding of the second supporting rod 301 is not limited by the installation position of the elastic element 5, the upper platform 1 can be folded to a position closer to the lower platform 2, the structure between the lifting workbench and the lower platform 2 is more compact in the folding state or when the upper platform 1 is at the lowest position, the packaging volume can be reduced, and the packaging cost can be saved.

Further, in this embodiment, when the upper platform 1 is at the lowest position, the axis or the extension line of the axis of the elastic element 5 is not parallel or not coincident with the connection line of the rotation connection points at the two ends of the first link 400, that is, when the upper platform 1 is at the lowest position, an included angle is formed between the axis or the extension line of the axis of the elastic element 5 and the connection line of the rotation connection points at the two ends of the first link 400, so that when the upper platform 1 rises from the lowest position, the force of the elastic element 5 is mostly converted into a moment of rotation of the first link 400, so that the first link 400 provides a sufficient lifting force to the lifting arm 3 through the second link 401 to enable the lifting arm 3 to be unfolded in a rotation. The tabletop workbench enables the elastic element 5 to provide enough lifting force or assistance to enable the upper platform 1 to rise or unfold upwards from the lowest position.

In the present embodiment, as shown in fig. 3 and 6, the rotational connection point of the second strut 301 to the lower platform 2 is set as a first rotational connection point 403, the rotational connection point of the first link 400 to the lower platform 2 is set as a second rotational connection point 404, the rotational connection point of the first link 400 to the second link 401 is set as a third rotational connection point 405, and the rotational connection point of the second link 401 to the second strut 301 is set as a fourth rotational connection point 406; horizontal projections of the first rotation connection point 403, the second rotation connection point 404, the third rotation connection point 405 and the fourth rotation connection point 406 on a vertical plane are sequentially enclosed to form a parallelogram. As shown in fig. 6, the XOY plane is set as a vertical plane, the horizontal projection of the first rotational connection point 403 on the vertical plane is marked as a point a, the horizontal projection of the second rotational connection point 404 on the vertical plane is marked as B point, the horizontal projection of the third rotational connection point 405 on the vertical plane is marked as C point, the horizontal projection of the fourth rotational connection point 406 on the vertical plane is marked as D point, the a point, the B point, the C point and the D point are sequentially connected to form a parallelogram, and the a point, the B point, the C point and the D point are four vertexes of the parallelogram. The first connecting rod 400, the second connecting rod 401, the lower platform 2 and the second supporting rod 301 together form a rotatable parallelogram structure, and the elastic element 5 can be linked with the second supporting rod 301 of the lifting arm 3 to synchronously rotate when the first connecting rod 400 is driven to rotate.

In some embodiments, as shown in fig. 3, the distance from the rotational connection point of the elastic element 5 to the first link 400 to the third rotational connection point 405 is smaller than the distance from the rotational connection point of the elastic element 5 to the first link 400 to the second rotational connection point 404. By the arrangement, when the upper platform 1 is at the lowest position, an inclined included angle is formed between the axis of the elastic element 5 and the axis of the first connecting rod 400, so that when the upper platform 1 ascends from the lowest position, the force of the elastic element 5 is mostly converted into the moment for rotating the first connecting rod 400; furthermore, when the upper platform 1 is at the lowest position, the elastic element 5 can also be rotated to a horizontal state or an approximately horizontal state to reduce the folding volume of the workbench.

In some embodiments, the height of the rotational connection point of the elastic element 5 with the lower platform 2 is lower than the height of the second rotational connection point 404, and the height of the second rotational connection point 404 is lower than the height of the first rotational connection point 403. Specifically, a support base 402 is connected to one side of the lower platform 2 near the second supporting rod 301, a first connecting hole and a second connecting hole are sequentially formed in the support base 402 from top to bottom, a first end of the first connecting rod 400 is hinged to the first connecting hole, and a first end of the elastic element 5 is hinged to the second connecting hole. As shown in fig. 3, the first end of the elastic element 5 is located closer to the lower platform 2, when the upper platform 1 is at the lowest position, the first link 400, the lower platform 2 and the elastic element 5 form a triangle structure, and when the upper platform 1 rises upwards from the lowest position, the force of the elastic element 5 is mostly converted into a moment for rotating the first link 400, so that the upper platform 1 can automatically rise upwards from the lowest position.

In some embodiments, as shown in fig. 5, the perpendicular projection of the elastic element 5 is located between the perpendicular projection of the second strut 301 and the perpendicular projection of the first link 400 and does not overlap. In this way, the elastic element 5 is located between the second supporting rod 301 and the first connecting rod 400, when the upper platform 1 is lifted or folded, the elastic element 5 does not interfere the rotation of the second supporting rod 301 and the first connecting rod 400, and when the workbench is in a folded state, the distance between the upper platform 1 and the lower platform 2 is further reduced, so that the folded upper platform is more compact. The height from the rotation connection point of the second connecting rod 401 and the second supporting rod 301 to the lower platform 2 is higher than the height from the rotation connection point of the second supporting rod 301 and the first supporting rod 300 to the lower platform 2.

In some embodiments, as shown in fig. 3, the height of the rotational connection point of the second link 401 and the second strut 301 to the lower platform 2 is higher than the height of the rotational connection point of the second strut 301 and the first strut 300 to the lower platform 2. In this way, the rotational connection point of the second link 401 and the second strut 301 is disposed above the rotational connection point of the second strut 301 and the first strut 300, so that the rotation of the second link 401 avoids interference with the rotation of the second strut 301 and the first strut 300.

Referring again to fig. 7 and 8, the novel lifting platform of this embodiment further comprises a locking mechanism for locking the upper platform 1 at different levels of its travel. The locking mechanism may have various structures, such as an elastic locking bar provided on the lower platform 2 or the upper platform 1, and the elastic locking bar is controlled to be inserted into or separated from the lower end of the first supporting bar 300 or the upper end of the second supporting bar 301 by using a handle and a brake cable so as to lock or unlock the lower end of the first supporting bar 300 or the upper end of the second supporting bar 301; in this embodiment, the locking mechanism is connected to the upper platform 1, and the locking mechanism includes a wrench 6 and a locking assembly connected to the upper platform 1, where the wrench 6 is in transmission connection with the locking assembly and is used to drive the locking assembly to unlock the upper platform 1, so that the height of the upper platform 1 is adjustable. Further, the locking assembly comprises a rotating plate 7 rotatably connected to the upper platform 1, and a lock pin 700 capable of synchronously rotating with the rotating plate 7 is connected to the rotating plate 7; the upper end of the second supporting rod 301 is connected with a locking plate 302 which can synchronously slide along with the upper end of the second supporting rod 301, and the locking plate 302 is provided with a plurality of locking grooves 303 along the length direction; the lock pin 700 is clamped with any lock groove 303, and an elastic piece is connected to the rotating shaft of the rotating plate 7, so that the lock pin 700 always has a movement trend of being clamped with the lock groove 303; the wrench 6 is in transmission connection with the rotating plate 7, and is used for driving the rotating plate 7 to rotate so that the lock pin 700 is separated from the locking groove 303. Pulling the wrench 6, wherein the wrench 6 drives the rotating plate 7 of the locking assembly to rotate, so that the lock pin 700 on the rotating plate 7 is separated from the lock groove 303 of the lock plate 302 at the upper end of the second supporting rod 301, at the moment, the upper end of the second supporting rod 301 can slide, and the height of the upper platform 1 can be adjusted; the wrench 6 is released, the rotating plate 7 is reset under the elasticity of an elastic member such as a torsion spring, so that the lock pin 700 is clamped into the lock groove 303 of the lock plate 302 at the upper end of the second supporting rod 301, and the upper end of the second supporting rod 301 is locked, so that the upper platform 1 is fixed relative to the lower platform 2. Therefore, the locking mechanism has simple structure and convenient operation.

In this embodiment, the number of locking mechanisms is two, and the locking mechanisms are respectively arranged at two sides of the bottom of the upper platform 1 and are respectively arranged corresponding to the upper ends of the two second supporting rods 301 of the two groups of lifting arms 3; the lifting workbench is rotatably connected with a rotating rod 600 at the bottom of the upper platform 1, a spanner 6 is connected with the rotating rod 600, and the spanner 6 can drive the rotating rod 600 to rotate; the rotating rod 600 is connected with two driving frames 8 which synchronously rotate along with the rotating rod 600, and each driving frame 8 is in transmission connection with a corresponding rotating plate 7 and is used for driving the rotating plate 7 to rotate. In the embodiment, an arc-shaped groove 101 taking the rotation axis of the rotation plate 7 as the center is arranged on the frame 100 at the bottom of the upper platform 1, a driving column 701 is in clearance fit in the arc-shaped groove 101, and the driving column 701 is fixedly connected with the rotation plate 7; the driving frame 8 is provided with a driving arm 800, the driving arm 800 is provided with an inclined long hole 801, a driving column 701 is in clearance fit in the inclined long hole 801, and when the spanner 6 rotates to drive the rotating rod 600 and the driving frame 8 to synchronously rotate, the inner wall of the inclined long hole 801 drives the driving column 701 to slide in the arc-shaped groove 101, so that the rotating plate 7 is driven to rotate, and the lock pin 700 is separated from the lock groove 303; it will be appreciated that the rotating portion of the rotating plate 7 is located in the middle of the rotating plate 7, and the driving post 701 and the lock pin 700 are separately disposed at two sides of the rotating portion of the rotating plate 7, and pressing the driving post 701 can tilt the lock pin 700. In addition, the rotating lever 600 may be provided to simultaneously unlock or simultaneously lock the two locking mechanisms.

In some embodiments, referring to fig. 8, a hook 802 extending downwards is connected to the driving frame 8, and a hanging post which is hooked with the hook 802 in a matching manner is arranged on the lifting arm 3 or the lower platform 2, and when the upper platform 1 is at the lowest position, the hook 802 is hooked with the hanging post. The arrangement of the hooks 802 on the driving frame 8 can keep the upper platform 1 locked with the lower platform 2 when being at the lowest position, so as to avoid the upper platform 1 from being opened accidentally. In addition, the hook 802 is arranged on the driving frame 8, so that unlocking of the hook 802 and unlocking of the locking mechanism are synchronous, and the operation of a user is more convenient.

In the description of the embodiments of the present utility model, it should be noted that, in the description of the present utility model, terms such as "inner", "outer", and the like, refer to directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or components must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.

In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "in this embodiment," "specific examples," or "some examples," etc., mean that a particular feature, mechanism, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, mechanisms, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. A desktop workstation, characterized in that: it comprises

2. A tabletop workbench according to claim 1, wherein: the rotating connection point of the second supporting rod and the lower platform is set to be a first rotating connection point, the rotating connection point of the first connecting rod and the lower platform is set to be a second rotating connection point, the rotating connection point of the first connecting rod and the second connecting rod is set to be a third rotating connection point, and the rotating connection point of the second connecting rod and the second supporting rod is set to be a fourth rotating connection point; horizontal projections of the first rotating connecting point, the second rotating connecting point, the third rotating connecting point and the fourth rotating connecting point on a vertical plane are sequentially arranged in a surrounding mode to form a parallelogram.

3. A tabletop workbench according to claim 2, wherein: the distance from the rotating connecting point of the elastic element and the first connecting rod to the third rotating connecting point is smaller than the distance from the rotating connecting point of the elastic element and the first connecting rod to the second rotating connecting point.

4. A tabletop workbench according to claim 2, wherein: the height of the rotating connecting point of the elastic element and the lower platform is lower than that of the second rotating connecting point, and the height of the second rotating connecting point is lower than that of the first rotating connecting point.

5. A tabletop workbench according to claim 2, wherein: the perpendicular projection of the elastic element is positioned between the perpendicular projection of the second supporting rod and the perpendicular projection of the first connecting rod and is not overlapped.

6. A tabletop workbench according to claim 1, wherein: the height from the rotation connection point of the second connecting rod and the second supporting rod to the lower platform is higher than the height from the rotation connection point of the second supporting rod and the first supporting rod to the lower platform.

7. A tabletop workbench according to claim 1, wherein: one side of the lower platform, which is close to the second supporting rod, is connected with a supporting seat, a first connecting hole and a second connecting hole are sequentially formed in the supporting seat from top to bottom, the first end of the first connecting rod is hinged to the first connecting hole, and the first end of the elastic element is hinged to the second connecting hole.

8. A tabletop workbench according to claim 1, wherein: the lifting arms are two groups, the two groups of lifting arms are respectively arranged on two sides of the bottom of the upper platform, and the two connecting rod mechanisms are respectively arranged corresponding to the two groups of lifting arms.

9. A tabletop workbench according to claim 1, wherein: the table top lift table also includes a locking mechanism for locking the upper platform at different heights of its travel.