CN220157808U

CN220157808U - Electric lifting workbench

Info

Publication number: CN220157808U
Application number: CN202321664962.8U
Authority: CN
Inventors: 项乐宏; 何霄; 邵同旺
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: 2023-12-12
Anticipated expiration: 2033-06-28

Abstract

The utility model discloses an electric lifting workbench, which comprises an upper platform, a lower platform and at least one group of lifting arms, wherein each group of lifting arms comprises two supporting rods with the 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 guide rail assembly is connected to the lower platform, and the length direction of the guide rail assembly is parallel to the sliding direction of the lower end of the first supporting rod; the sliding block is in sliding fit on the guide rail assembly; the connecting rod is connected with the sliding block and the second supporting rod, and synchronously moves along with the sliding block and is used for enabling the second supporting rod to rotate and open or rotate and fold; the driving assembly is connected to the lower platform and is in transmission connection with the sliding block and used for driving the sliding block to slide in a reciprocating manner. The electric lifting workbench has good standing stability and high safety.

Description

Electric lifting workbench

Technical Field

The utility model relates to the technical field of computer bearing equipment, in particular to an electric lifting 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 lifting workbench for bearing the tablet personal computer, which is also called lifting workbench or desktop computer bracket, 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 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, and further comprises a driving unit, wherein the driving unit is generally a controllable gas spring, one end of the gas spring is connected with a mounting plate at the bottom of 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 a spanner connected to the upper platform so as to enable the height of the upper platform to be adjustable, such as the lifting workbench of the applicant of the present application with the publication number of CN 110192719A. The driving unit of the lifting workbench in the related art also adopts a driving motor, namely the driving motor drives the lifting arm to rotate so that the height of the upper platform can be adjusted; similarly, the drive motor is also connected to the upper platform, such as the electric lift table of the patent application CN 213820331U.

The inventor finds that the lifting workbench of the related art has the following defects in the actual use process: the driving units, such as gas springs or driving motors, of the lifting workbench are connected with the upper platform and the lifting arm, when the lifting workbench is in an unfolding state, the gravity center of the driving unit is lifted upwards, so that the upper part and the lower part of the lifting workbench are heavy, and particularly when the lifting workbench is lifted to the maximum height, the risks of high gravity center and unstable standing exist, and the safety is poor; therefore, people have to enlarge the effective grounding area of the lower platform to improve the standing stability of the lifting workbench, but the enlarged lower platform occupies more ground or desktop space and cannot meet the requirements of users.

Disclosure of Invention

The utility model aims to overcome the defects of the related art and provide the electric lifting workbench with good standing stability and high safety.

The technical scheme of the utility model is that an electric lifting workbench with the following structure is provided: it comprises

The lifting arm comprises two middle parts, and is hinged to be an X-shaped supporting rod: 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 guide rail assembly is connected to the lower platform, and the length direction of the guide rail assembly is parallel to the sliding direction of the lower end of the first supporting rod;

the sliding block is in sliding fit with the guide rail assembly along the length direction of the guide rail assembly;

the connecting rod is connected with the sliding block and the second supporting rod, and synchronously moves along with the sliding block and is used for enabling the second supporting rod to be rotated to be unfolded or rotated to be folded;

the driving assembly is connected to the lower platform and is in transmission connection with the sliding block and used for driving the sliding block to slide in a reciprocating manner.

In some embodiments, a swing arm is connected to the second strut, a first end of the connecting rod is rotatably connected to the slider, and a second end of the connecting rod is rotatably connected to the swing arm; the connecting rod is always obliquely arranged relative to the sliding direction of the sliding block.

In some embodiments, the swing arm is connected to an outer sidewall of the end of the second strut near the lower platform and extends laterally outward of the second strut.

In some embodiments, the guide rail assembly comprises a hollow guide rail body, wherein an inner cavity is formed in the guide rail body, an opening communicated with the inner cavity is formed on the top of the guide rail body, and the sliding block is in clearance fit in the inner cavity; the opening is connected with a cover shell which can open or close the opening.

In some embodiments, elastic buckles extending downwards are arranged on two side walls of the housing; and clamping holes matched and clamped with the elastic buckles are formed in the two inner side walls of the guide rail body.

In some embodiments, a crosspiece is connected to the lower platform in the width direction, one end of the rail body is connected to the middle of the crosspiece, and the other end of the rail body is connected to the lower platform.

In some embodiments, the driving assembly comprises a transmission rod which is arranged along the length direction of the guide rail assembly and can rotate, and a driving motor which drives the transmission rod to rotate, the transmission rod is in threaded connection with the sliding block, and the sliding block is circumferentially limited on the guide rail assembly; the driving motor is arranged on the outer side of one end of the lower platform and is connected with the lower platform.

In some embodiments, the bottom of the guide rail assembly is connected with two travel switches, the two travel switches extend into the guide rail assembly, the two travel switches are respectively positioned at two sides of the sliding block along the sliding direction of the sliding block, and the sliding block is provided with a trigger part capable of triggering the two travel switches; the two travel switches are respectively and electrically connected with a control circuit of the driving motor.

In some embodiments, the trigger portion is integrally formed at the bottom of the slider.

In some embodiments, the bottom of the drive motor is higher than the bottom of the lower platform for providing a gap between the bottom of the drive motor and the table top.

In summary, compared with the related art, the electric lifting workbench has the following advantages: the driving component of the electric lifting workbench can drive the sliding block to slide back and forth along the length direction of the guide rail component, so that the sliding block drives the connecting rod to move, and the second supporting rod is driven to rotate to open or rotate to fold, so that the height of the upper platform relative to the lower platform can be adjusted; the electric lifting workbench is characterized in that the guide rail assembly, the driving assembly and the sliding block are arranged on the lower platform, so that when the driving assembly drives the upper platform to ascend, the gravity centers of the guide rail assembly, the driving assembly and the sliding block do not move upwards along with the upper platform, and the risks of heavy upper part, light lower part, high gravity center and unstable standing of the lifting workbench are avoided, and the safety is high; therefore, the weight of the upper part and the lower part of the electric lifting workbench is balanced, and the standing stability is good; and compared with the lifting workbench in the related art, on the basis of consistent standing stability, the effective supporting area of the lower platform can be properly reduced, so that the lifting workbench occupies less desktop space.

Drawings

Fig. 1 is a schematic view of a structure of an electric lifting table according to some embodiments of the present utility model.

Fig. 2 is another angular schematic view of an electrically powered lift table according to some embodiments of the utility model.

Fig. 3 is a schematic view of a bottom structure of an electric lift table according to some embodiments of the utility model.

Fig. 4 is a schematic cross-sectional view of an electric lift table according to some embodiments of the utility model.

Fig. 5 is an enlarged schematic view of the portion a in fig. 4.

Fig. 6 is a schematic diagram of an assembled structure of an electric lifting table according to some embodiments of the present utility model.

Fig. 7 is a schematic view of a slider of an electric lifting table according to some embodiments of the present utility model.

Reference numerals illustrate:

1. the device comprises an upper platform, 100, a table plate, 101, a bracket, 102, a keyboard holder, 2, a lower platform, 200, a crosspiece, 201, a connecting frame, 3, a lifting arm, 300, a first supporting rod, 301, a second supporting rod, 302, a swinging arm, 4, a driving component, 400, a driving motor, 401, a transmission rod, 5, a guide rail body, 500, a housing, 501, an elastic buckle, 502, a clamping hole, 503, an inner cavity, 6, a sliding block, 600, a triggering part, 601, a groove, 602, a threaded hole, 7, a connecting rod, 8, a travel switch, 800, a connecting plate, 801 and a bottom shell.

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 7, an embodiment of the present utility model discloses an electric lifting table, which is also called an electric table top lifting table, a table top electric lifting table, etc., and the electric lifting table structurally comprises an upper platform 1, a lower platform 2, and at least one group of lifting arms 3 connecting the upper platform 1 and the lower platform 2 and 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 100 body, which comprises a table board 100 and a bracket 101 or a frame connected to the bottom of the table board 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 the bracket 101 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 the bracket 101 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, the electric lifting workbench further includes a keyboard support 102, and the keyboard support 102 is connected to a side of the upper platform, which is close to the user, through a mounting base.

In this embodiment, a pair of first sliding grooves with opposite openings are provided on the bracket 101 at the bottom of the upper platform 1, and the upper ends of the second supporting rods 301 are slidably fitted in the first sliding grooves; a pair of second sliding grooves with opposite openings and parallel to the first sliding grooves are arranged on two opposite inner side walls of the lower platform 2, and the lower ends of the first supporting rods 300 are in sliding fit in the second sliding grooves; wherein, the projection coincidence of first spout and second spout in vertical direction. So arranged, the sliding between the lower end of the first supporting rod 300 and the lower platform 2 and between the upper end of the second supporting rod 301 and the upper platform 1 is smoother when the upper platform 1 is adjusted in height.

In the present embodiment, the lifting arms 3 are two groups and distributed along the width direction of the upper platform 1; the lower ends of the first supporting rods 300 of the two groups of lifting arms 3 are connected with lower sliding rods, and the two ends of the lower sliding rods are respectively in sliding fit in the second sliding grooves; the upper ends of the second supporting rods 301 of the two groups of lifting arms 3 are connected with upper sliding rods, and two ends of the upper sliding rods are respectively in sliding fit in the first sliding grooves. The two ends of the lower slide bar and the upper slide bar are respectively connected with pulleys or rollers which can be in sliding fit in the first slide groove and the second slide groove, so that friction is reduced.

Referring to fig. 1 to 6 again, in this embodiment, the electric lifting platform further includes a guide rail assembly, a slider 6, a link 7, and a driving assembly 4, the guide rail assembly is connected to the lower platform 2, and the length direction of the guide rail assembly is parallel to the sliding direction of the lower end of the first support rod 300; the sliding block 6 is in sliding fit on the guide rail assembly along the length direction of the guide rail assembly; the connecting rod 7 is connected with the sliding block 6 and the second supporting rod 301, and the connecting rod 7 synchronously moves along with the sliding block 6 and is used for enabling the second supporting rod 301 to rotate to open or rotate to fold; the driving assembly 4 is connected to the lower platform 2, and the driving assembly 4 is in transmission connection with the sliding block 6 and is used for driving the sliding block 6 to slide reciprocally. The driving assembly 4 of the present embodiment is intended to drive the slider 6 to slide, so the driving assembly 4 is a linear driving assembly 4, and may be an electric push rod, a linear motor, or a combination of the driving motor 400 and a screw nut pair.

It should be understood that the electric lifting workbench of this embodiment further includes a hand controller connected to the upper platform 1, where the hand controller is electrically connected to the control circuit of the driving assembly 4 through a wire, and is configured to send a lifting signal to the control circuit of the driving assembly 4, so that the driving assembly 4 drives the upper platform 1 to lift or descend, where the hand controller and the control circuit of the driving assembly 4 are all components in the prior art, and this embodiment is not described in detail.

Referring to fig. 1 to 3 again, in this embodiment, the driving assembly 4 of the electric lifting workbench can drive the sliding block 6 to slide reciprocally along the length direction of the guide rail assembly, so that the sliding block 6 drives the connecting rod 7 to move, and drives the second supporting rod 301 to rotate to open or rotate to fold, so that the height of the upper platform 1 relative to the lower platform 2 can be adjusted; the electric lifting workbench is characterized in that the guide rail assembly, the driving assembly 4 and the sliding block 6 are arranged on the lower platform 2, so that when the driving assembly 4 drives the upper platform 1 to ascend, the gravity centers of the guide rail assembly, the driving assembly 4 and the sliding block 6 do not move upwards along with the lifting workbench, the risks of heavy upper part, light lower part, high gravity center and unstable standing of the lifting workbench are avoided, and the safety is high; therefore, the weight of the upper part and the lower part of the electric lifting workbench is balanced, and the standing stability is good; and compared with the lifting workbench in the related art, on the basis of consistent standing stability, the effective supporting area of the lower platform 2 can be properly reduced, so that the lifting workbench occupies less desktop space.

In some embodiments, as shown in fig. 5, a swing arm 302 is connected to the second supporting rod 301, a first end of the connecting rod 7 is rotatably connected to the sliding block 6, and a second end of the connecting rod 7 is rotatably connected to a free end of the swing arm 302; the connecting rod 7 is always arranged in an inclined manner relative to the sliding direction of the slide 6. The slider 6 slides and drives the connecting rod 7 to act, and the connecting rod 7 drives the second support rod 301 to rotate through the swing arm 302, namely through the arrangement of the connecting rod 7 and the swing arm 302, the linear motion of the slider 6 is converted into the rotation of the second support rod 301, the transmission structure is simple, and the sliding direction of the connecting rod 7 relative to the slider 6 is always inclined, so that when the upper platform 1 ascends from the lowest position, the force of the driving assembly 4 can be quickly converted into the lifting force of the upper platform 1, and when the upper platform 1 ascends from the lowest position, the torque output by the driving assembly 4 is overlarge, and the power requirement on the driving assembly 4 is lower.

In this embodiment, as shown in fig. 1, a swing arm 302 is connected to an outer sidewall of the end of the second strut 301 near the lower platform 2 and extends outward in the lateral direction of the second strut 301. By the arrangement, the upper end of the connecting rod 7 is closer to the lower platform 2, the gravity center of the electric lifting workbench is further lowered, and standing is more stable.

Referring again to fig. 5 and 6, in some embodiments, the guide rail assembly includes a hollow guide rail body 5, an inner cavity 503 is formed inside the guide rail body 5, an opening communicating with the inner cavity 503 is formed at the top of the guide rail body 5, and the slider 6 is clearance fit in the inner cavity 503; the opening is connected with a cover 500 which can open or close the opening. The length direction of the guide rail body 5 of the embodiment is parallel to the sliding direction of the lower end of the first supporting rod 300, so that the sliding block 6 is more stable during sliding; the cover 500 prevents sundries, fingers of a user, etc. from entering the inner cavity 503 of the guide rail body 5, so that the risk of clamping hands can be prevented, and the safety is high. In order to facilitate the installation or disassembly and maintenance of the housing 500, elastic buckles 501 extending downwards are arranged on both side walls of the housing 500; and the two inner side walls of the guide rail body 5 are provided with clamping holes 502 which are matched and clamped with the elastic buckles 501. The installation of the housing 500 can be completed only by making the elastic buckles 501 on the two side walls of the housing 500 be clamped in the clamping holes 502 of the guide rail body 5. In order to facilitate the installation of the rail assembly, a rail 200 is connected to the lower platform 2 in the width direction, one end of the rail body 5 is connected to the middle of the rail 200, and the other end of the rail body 5 is connected to the lower platform 2. Wherein an L-shaped connecting frame 201 is connected to the middle part of the crosspiece 200, and one end of the guide rail body 5 is connected to the connecting frame 201.

In some embodiments, as shown in fig. 5 and 6, the driving assembly 4 includes a transmission rod 401 that is disposed along the length direction of the guide rail assembly and is rotatable, and a driving motor 400 that drives the transmission rod 401 to rotate, where the transmission rod 401 is in threaded connection with the slider 6, and the slider 6 is circumferentially limited on the guide rail assembly; in this embodiment, the transmission rod 401 is essentially a screw rod with external threads, the slide block 6 is provided with a threaded hole 602, and the threaded hole 602 is in threaded connection with the screw rod; both ends of the transmission rod 401 are rotatably connected with the guide rail body 5 through bearings, and one end of the transmission rod 401, which is close to the driving motor 400, is in transmission connection with the output end of the driving motor 400. In this embodiment, the driving motor 400 is disposed outside one end of the lower platform 2 and is fixedly connected to the outer sidewall of the lower platform 2 through screws. In this embodiment, as shown in fig. 4, the bottom of the driving motor 400 is higher than the bottom of the lower platform 2, so that a gap is formed between the bottom of the driving motor 400 and the table top. It is easy to understand that the bottom of the lower platform 2 of the electric lifting workbench is provided with soft foot pads, the bottom of the driving motor 400 is set to be higher than the bottom of the lower platform 2, and thus the vibration of the driving motor 400 can be effectively prevented from being directly transmitted to a tabletop or a table top, and the silencing effect is good when the electric lifting workbench is used.

Referring to fig. 5 again, in some embodiments, to avoid the transition rise or transition fall of the upper platform 1 caused by the software program fault, two travel switches 8 are connected to the bottom of the guide rail assembly, the two travel switches 8 extend into the guide rail assembly, the two travel switches 8 are respectively located at two sides of the slide block 6 along the sliding direction of the slide block 6, and a trigger part 600 capable of triggering the two travel switches 8 is provided on the slide block 6; the two travel switches 8 are respectively electrically connected with the control circuit of the driving motor 400. That is, in the case of a software program failure, the driving motor 400 is not controlled by software, and when the upper platform 1 is lifted to the highest position or lowered to the lowest position, the driving motor 400 still works, so that the motor is damaged, and the two travel switches 8 can avoid the defects, so that the lifting of the electric lifting workbench is safer.

In this embodiment, the two travel switches 8 are respectively connected to the connection board 800, and two holes for the two travel switches 8 to extend into the inner cavity 503 of the guide rail body 5 are provided at the bottom of the guide rail body 5, and when in installation, only the two travel switches 8 need to be inserted in the holes aligned to the bottom of the guide rail body 5, and then the connection board 800 is connected with the bottom of the guide rail body 5 through screws, so that the installation operation is very simple and convenient.

Referring to fig. 7, in some embodiments, a trigger portion 600 for triggering in cooperation with the two travel switches 8 is integrally formed at the bottom of the slider 6. In the present embodiment, two grooves 601 are formed in the bottom of the slider 6, so that a portion between the two grooves 601 forms the trigger 600. The trigger part 600 has a simple structure, and the trigger part 600 does not need to be additionally assembled on the sliding block 6; the contact area between the bottom of the sliding block 6 and the bottom wall of the guide rail body 5 is reduced by the arrangement of the other two grooves 601, so that the sliding of the sliding block 6 is smoother.

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. An electric lifting workbench is characterized in that: it comprises

2. An electric lifting table according to claim 1, wherein: the second support rod is connected with a swing arm, the first end of the connecting rod is rotatably connected with the sliding block, and the second end of the connecting rod is rotatably connected with the swing arm; the connecting rod is always obliquely arranged relative to the sliding direction of the sliding block.

3. An electric lifting table according to claim 2, characterized in that: the swing arm is connected to the outer side wall of one end of the second support rod, which is close to the lower platform, and extends outwards along the transverse direction of the second support rod.

4. An electric lifting table according to claim 1, wherein: the guide rail assembly comprises a hollow guide rail body, an inner cavity is formed in the guide rail body, an opening communicated with the inner cavity is formed in the top of the guide rail body in an opening mode, and the sliding block is in clearance fit in the inner cavity; the opening is connected with a cover shell which can open or close the opening.

5. An electric lifting workbench according to claim 4, wherein: elastic buckles extending downwards are arranged on two side walls of the housing; and clamping holes matched and clamped with the elastic buckles are formed in the two inner side walls of the guide rail body.

6. An electric lifting workbench according to claim 4, wherein: the rail is connected with the lower platform in the width direction, one end of the guide rail body is connected with the middle part of the rail, and the other end of the guide rail body is connected with the lower platform.

7. An electric lifting table according to claim 1, wherein: the driving assembly comprises a transmission rod which is arranged along the length direction of the guide rail assembly and can rotate, and a driving motor which drives the transmission rod to rotate, the transmission rod is in threaded connection with the sliding block, and the sliding block is circumferentially limited on the guide rail assembly; the driving motor is arranged on the outer side of one end of the lower platform and is connected with the lower platform.

8. The electric lifting table according to claim 7, wherein: the bottom of the guide rail assembly is connected with two travel switches, the two travel switches extend into the guide rail assembly, the two travel switches are respectively positioned at two sides of the sliding block along the sliding direction of the sliding block, and the sliding block is provided with a trigger part capable of triggering the two travel switches; the two travel switches are respectively and electrically connected with a control circuit of the driving motor.

9. The electric lifting table according to claim 8, wherein: the trigger part is integrally formed at the bottom of the sliding block.

10. The electric lifting table according to claim 8, wherein: the bottom of the driving motor is higher than the bottom of the lower platform, and a gap is formed between the bottom of the driving motor and the table top.