CN103653780B - Same table - Google Patents

Abstract

The present invention is an elevating table, which includes an upper platform, a lower platform, two pivot joint groups and two fastening groups; The pivot groups are opposite to each other, and each pivot group is pivotally connected to the upper platform and the lower platform at the same time, and each fastening group is often fixed on each pivot group and the upper platform at the same time; the advantage is that through each pivot The upper platform can be raised or lowered relative to the lower platform, and the distance between the upper platform and the lower platform can be adjusted in time according to the needs, and the posture can be adjusted in time, so no matter what posture you take, you can be on the upper platform Work on the ground, and then solve the health hazards of maintaining a sitting or standing posture for a long time, and can also maintain work productivity, achieving the effect of taking into account both health and work productivity.

Description

Lifting table

technical field

The invention relates to an auxiliary tool for a humanized working environment, in particular to a lifting table which can adjust the height of the desktop at will.

Background technique

Due to the needs of the nature of work, many people must maintain a long-term sitting position; according to medical research, long-term sitting positions will increase all-cause mortality (all-cause mortality), especially cardiovascular disease, diabetes and obesity; for single For people who maintain a long-term sitting position every day, their risk of dying from cardiovascular disease will increase by 50%; for people who have exercise habits, maintaining a long-term sitting position will still increase their mortality rate, because Maintaining a sitting posture will slow down the circulation of lipase in the human body and reduce the body’s absorption of fat, while standing muscles will promote the action of lipase, prompting the body to process fat and cholesterol, and it has nothing to do with the length of exercise time.

In order to avoid long-term sitting posture from endangering human health, various desks that can be used while standing are designed in the prior art, and even desks attached to treadmills are arranged to allow users to work while running.

Among them, although standing and working for a long time can make people more energetic and increase calorie consumption, it will also increase the burden on the human circulatory system, make the human body more fatigued, and increase the risk of carotid arteriosclerosis and varicose veins. Standing for long periods of time at work is not the way to go about addressing the disadvantages of maintaining a prolonged sitting position.

Therefore, at present, in order to solve the shortcoming of maintaining a long-term sitting posture, most of them adopt regular standing rests, that is, change from a sitting posture to a standing posture at regular intervals, and leave the working desktop at the same time, so as to improve human health.

However, because regular standing and resting must leave the working desktop, although it can solve the problems caused by sitting for a long time, it also sacrifices the number of hours that can be worked, so that the fixed daily working hours can be processed. The reduction in workload cannot take into account health and work productivity at the same time.

Contents of the invention

In view of the fact that the above-mentioned prior art solves the disadvantages caused by maintaining a long-term sitting posture, and thus creates additional problems, the present invention provides a lifting table, which can not only solve the health hazards of maintaining a long-term sitting posture, but also If work capacity can be maintained, health and work capacity can be taken into account.

In order to achieve the aforementioned object of the invention, the technical means adopted by the present invention is to design a lifting table, which includes:

An upper platform, which includes two connecting parts, and the two connecting parts are arranged on both sides of the bottom surface of the upper platform;

The lower platform is relatively arranged below the upper platform and is selectively attached to the bottom surface of the upper platform. The lower platform includes two connecting parts, and the two connecting parts are arranged on both sides of the top surface of the lower platform. Each connecting portion is opposite to each connecting portion of the upper platform;

Two pivotal joint groups, the two pivotal joint groups are opposite to each other, and each pivotal joint group is pivotally connected with each connecting part of the upper platform and the corresponding connecting part of the lower platform at the same time;

Two fastening groups, each fastening group is arranged on the bottom surface of the upper platform, and each fastening group is frequently and simultaneously fixed on the corresponding connecting portion of each pivot group and the upper platform.

The advantage of the present invention is that the upper platform can be raised or lowered relative to the lower platform through the arrangement of each pivoting group and each clamping group, so that the distance between the upper platform and the lower platform can be adjusted in due course according to demand, and the sitting posture can be changed to Standing posture, or changing from a standing posture to a sitting posture, can adjust the posture in a timely manner, and can also work while changing the posture, which can solve the health hazards of maintaining a sitting or standing posture for a long time, and can also maintain work productivity. Achieve the effect of taking into account health and work productivity.

Further, each pivot joint group includes a main pivot joint arm and a secondary pivot joint arm, the main pivot joint arm is opposite to the secondary pivot joint arm, and the main pivot joint arm and the secondary pivot joint arm of each pivot joint group are simultaneously connected with Each connection part of the upper platform and the corresponding connection part of the lower platform are pivotally connected.

Furthermore, each fastening group includes a bolt, and the bolts of each fastening group are often threaded on the corresponding connection parts of each pivotal group and the upper platform at the same time.

Furthermore, the bolts of each fastening group are selectively threaded through the connecting parts corresponding to the main pivot arm of each pivot group and the upper platform at the same time.

Further, at least one through hole is formed through each connecting portion of the upper platform, and a fastening portion is formed on the upper end of the main pivot arm, and several perforations are formed on the fastening portion, and the fastening portion of the main pivot arm The at least one through hole of the upper platform is selectively opposed to one of the through holes of the corresponding connecting portion of the upper platform, and each fastening group includes a bolt, and the bolts of each fastening group are selectively threaded through each pivot at the same time. One of the through holes of the fastening part of the main pivot arm connected to the set is in the corresponding through hole of each connecting part of the upper platform.

Furthermore, each clamping group further includes a puller and a linkage set, and the puller, linkage set and bolt are sequentially connected in series.

Further, wherein the linkage set of each locking group includes a first linkage, a second linkage and a third linkage, and the first linkage, the second linkage and the third linkage The parts are pivotally connected to each other in sequence, the first link is connected with the puller, the third link is connected with the bolt, and each fastening group further includes an elastic recovery part and a connecting part. The connecting piece is arranged on the bottom surface of the upper platform and is pivotally connected with the second linking piece. One end of the elastic return piece is fixedly connected to the connecting piece, and the other end of the elastic recovery piece is abutted against the second linking piece near the first linking piece. .

Further speaking, the first link of the link set of each fastening group is pivotally connected with the puller, and the first link of each fastening set is movably embedded on the upper flat bottom surface.

Furthermore, each clamping group includes a shell covering the second linkage, the third linkage, the elastic return piece, the connecting piece and the bolt, and the shell of the clamping set is connected to the upper platform.

Furthermore, it includes two reversing devices, and each reversing device is arranged on the lower platform and is connected with each pivot joint group, so that the upper platform can be easily raised relative to the lower platform.

Furthermore, it includes two reversing devices, and each reversing device is arranged on the lower platform and is connected with each pivot joint group, so that the upper platform can be easily raised relative to the lower platform.

Furthermore, each reversing device includes an elastic return member, and the two ends of the elastic return member are respectively connected to the corresponding connecting parts of the secondary pivot arm of each pivot group and the lower platform.

Further, wherein the lower end of the auxiliary pivot arm of each pivot group protrudes to form a convex portion, and each reversing device includes a shrapnel and a fulcrum element, and one end of the shrapnel of each reversing device is connected to the lower platform. The other end selectively abuts against the protrusion of the auxiliary pivot arm of the corresponding pivot group, the fulcrum elements of each reversing device are arranged on the lower platform, and the fulcrum elements abut against the bottom side of the elastic piece.

Furthermore, each connecting part of the lower platform is formed with a long hole through it, and the protrusions of the auxiliary pivot arms of each pivot group are slidably inserted into the long holes of the corresponding connecting part of the lower platform, and each One end where the elastic piece of the reversing device selectively abuts against the auxiliary pivot arm of the corresponding pivot group is opposite to the elongated hole.

Further, it includes a reinforcing element, which is connected and arranged between the two pivot groups.

Further, it includes a reinforcing element, which is connected between the two pivot groups, and includes a front reinforcement, and the two ends of the front reinforcement are respectively connected to the main pivot arms of the two pivot groups.

Furthermore, the reinforcement element includes a rear reinforcement, and the two ends of the rear reinforcement are respectively connected to the auxiliary pivot arms of the two pivot groups.

Further, it includes a reinforcement element, which is connected between the two pivot groups, and includes a front reinforcement and a rear reinforcement, and the two ends of the front reinforcement are respectively connected to the main pivot joints of the two pivot groups. The two ends of the arm and the rear reinforcement are respectively connected to the auxiliary pivot arms of the two pivot groups.

Furthermore, the lower platform includes several counterweights, and each counterweight is set on the lower platform.

Furthermore, the lower platform includes two shells, each of which is disposed around the outside of each connecting portion, and each shell of the lower platform is located on the outside of the corresponding pivot joint group.

Further, wherein the lower platform includes two housings, each housing is arranged around the outside of each connecting portion, and each housing of the lower platform is located outside the corresponding pivot joint group, and each reversing device is located on the outer side of the lower platform. Between each connecting portion and the corresponding housing.

Furthermore, a tray is included therein, and the tray is detachably connected with the lower platform.

Furthermore, the tray includes a storage board and two connecting parts, the two connecting parts are respectively connected and arranged on both sides of the storage board, and the two connecting parts of the tray are respectively slidably arranged on the lower platform.

Further, it includes a tray, the tray is detachably connected to the lower platform, the tray includes a storage board and two connecting parts, the two connecting parts are respectively connected and arranged on both sides of the storage board, and the two connecting devices of the tray The components are respectively slidably arranged on the two casings of the lower platform.

Furthermore, it includes a tray, and the tray is arranged on the bottom side of the upper platform.

Furthermore, the tray includes a storage board and two connecting parts, and the two ends of each connecting part of the tray are respectively connected with the storage board and the upper platform.

Further, it includes a tray, which is arranged on the bottom side of the upper platform, and the tray includes a storage board and two connecting parts, and the two ends of each connecting part of the tray are respectively connected with the storage board and the upper platform.

Description of drawings

Fig. 1 is a top perspective view of a preferred embodiment of the present invention.

Fig. 2 is a bottom perspective view of a preferred embodiment of the present invention.

Fig. 3 is a side view of some components of a preferred embodiment of the present invention.

Fig. 4 is a front view of a preferred embodiment of the present invention.

Fig. 5 is a three-dimensional appearance view of some components of a preferred embodiment of the present invention.

FIG. 6 is an exploded perspective view of some components of a preferred embodiment of the present invention.

FIG. 7 is a three-dimensional appearance view of another part of components in a preferred embodiment of the present invention.

Fig. 8 is a front view of some components of a preferred embodiment of the present invention.

Fig. 9 is a first action diagram of a preferred embodiment of the present invention.

Fig. 10 is a second action diagram of a preferred embodiment of the present invention.

Fig. 11 is a diagram of the third operation of a preferred embodiment of the present invention.

Fig. 12 is a schematic diagram of the use of a preferred embodiment of the present invention.

Fig. 13 is a schematic diagram of the use of a preferred embodiment of the present invention.

Fig. 14 is a top perspective view of a preferred embodiment of the present invention.

Fig. 15 is a perspective view of another part of components of a preferred embodiment of the present invention.

Description of main component symbols

10 upper platform 11 connecting part

111 through holes 20 lower platforms

21 Connecting part 211 Long hole

22 Counterweight 23 Housing

30 pivot group 31 main pivot arm

311 clamping part 3111 perforation

32 pairs of pivoting arms 40 clamping groups

41 Bolt 42 Wrench

43 linkage group 431 first linkage

432 The second linkage 433 The third linkage

44 Elastic return piece 45 Connecting piece

46 shell 50 reverse device

51 Elastic recovery part 52 bracket

53 shrapnel 54 fulcrum element

60 reinforcement element 61 front reinforcement

62 rear reinforcements 70 pallets

71 Storage board 72 Connection piece

70A tray 71A storage board

72A connecting piece 80 protection element.

detailed description

The technical means adopted by the present invention to achieve the intended purpose are further described below in conjunction with the drawings and preferred embodiments of the present invention.

As shown in FIGS. 1 to 4 , the lifting table of the present invention includes an upper platform 10 , a lower platform 20 , two pivot joints 30 , two clamping units 40 , a reversing device 50 and a reinforcing element 60 .

As shown in Fig. 2 and Fig. 4 to Fig. 6, the aforementioned upper platform 10 includes two connecting parts 11, and the two connecting parts 11 are arranged on both sides of the bottom surface of the upper platform 10. Further, each connecting part 11 is formed through a There is at least one through hole 111 .

As shown in Figures 2 to 4, the aforesaid lower platform 20 is relatively arranged below the upper platform 10 and selectively abutted against the bottom surface of the upper platform 10. The lower platform 20 includes two connecting parts 21 and several counterweights. 22 and the second housing 23, the two connecting parts 21 are arranged on both sides of the top surface of the lower platform 20, and each connecting part 21 of the lower platform 20 is opposite to each connecting part 11 of the upper platform 10, and each counterweight 22 is arranged on the lower platform 20. On the platform 20 , each casing 23 is disposed outside each connecting portion 21 ; further, each connecting portion 21 is formed with a long hole 211 , and each counterweight 22 is disposed on the bottom surface of the lower platform 20 .

As shown in FIG. 3 and FIG. 5 , the aforementioned two pivot joint groups 30 are opposite to each other, and each pivot joint group 30 is pivotally connected to each connecting portion 11 of the upper platform 10 and the corresponding connecting portion 21 of the lower platform 20 at the same time, and Each pivot group 30 is located inside the corresponding housing 23 of the lower platform 20, and each pivot group 30 includes a main pivot arm 31 and a secondary pivot arm 32, the main pivot arm 31 and the secondary pivot arm 32, the main pivot arm 31 and the auxiliary pivot arm 32 of each pivot group 30 are pivotally connected to each connecting portion 11 of the upper platform 10 and the corresponding connecting portion 21 of the lower platform 20 at the same time; further, Please refer to FIG. 6 and FIG. 7 together. The upper end of the main pivot arm 31 is formed with a fastening portion 311, and several perforations 3111 are formed on the top of the fastening portion 311. The fastening portion 311 of the main pivotal arm 31 At least one through hole 3111 is selectively opposite to one of the through holes 111 of the connecting portion 11 of the upper platform 10, and a protrusion 321 is provided at the lower end of the auxiliary pivot arm 32, and the protrusion 321 of the auxiliary pivot arm 32 of each pivot group 30 321 is slidably passed through the long hole 211 of the corresponding connecting portion 21 of the lower platform 20 .

As shown in FIG. 2, FIG. 4 and FIG. 8, the above-mentioned fastening groups 40 are arranged on the bottom surface of the upper platform 10, and each fastening group 40 is often fixed on each pivot group 30 and the upper platform 10 at the same time. on the corresponding connecting portion 11, so that the relative positions of each pivot group 30, the upper platform 10 and the lower platform 20 are fixed; further, please refer to FIG. 6, each clamping group 40 includes a bolt The bolt 41 of each clamping group 40 is selectively passed through one of the through holes 3111 of the clamping part 311 of the main pivot arm 31 of each pivoting group 30 corresponding to the connecting part 11 of the upper platform 10 In the through-hole 111; further, as shown in Figure 5 and Figure 8, each fastening group 40 includes a puller 42 and a linkage set 43, the puller 42, the linkage set 43 and the bolt 41 in series;

In a preferred embodiment, as shown in FIG. 5 , FIG. 6 and FIG. 8 , the link group 43 of each fastening group 40 includes a first link 431 , a second link 432 and a third link. The moving part 433, the first connecting part 431, the second connecting part 432 and the third connecting part 433 are pivotally connected to each other in sequence, and the first connecting part 431 of each fastening group 40 is movably embedded in the upper platform 10, and the first linkage 431 is pivotally connected to the puller 42, the third linkage 433 is connected to the bolt 41, and each fastening group 40 further includes an elastic recovery piece 44, a connecting piece 45 and a housing 46, the connectors 45 of each clamping group 40 are arranged on the bottom surface of the upper platform 10 and are pivotally connected with the second linkage 432, and one end of the elastic return member 44 is fixedly connected with the connector 45, and the other One end abuts against the second linkage 432 close to the first linkage 431, and the shell 46 covers the second linkage 432, the third linkage 433, the elastic return piece 44, the connecting piece 45 and the bolt 41 , and the shell 46 of the fastening group 40 is connected with the upper platform 10 .

As shown in Fig. 3 and Fig. 7, the aforesaid reversing devices 50 are arranged on the lower platform 20 and are connected with the pivot joints 30, so that the upper platform 10 can be easily raised relative to the lower platform 20, which includes an elastic Replying member 51, a bracket 52, a shrapnel 53 and a fulcrum element 54, one end of the elastic returning member 51 is connected with the bracket 52, and the other end is sleeved on the secondary pivoting arm 32 of each pivoting group 30, each opposite The bracket 52 of the rotating device 50 is connected with the lower platform 20, and one end of the shrapnel 53 of each reversing device 50 is connected with the lower platform 20, and its other end is opposite to the long hole 211 of each connecting part 21 of the lower platform 20 and selectively Connected with the auxiliary pivot arm 32 of the corresponding pivot group 30, the fulcrum element 54 abuts against the bottom side of the elastic piece 53, and the fulcrum element 54 of each reversing device 50 is arranged on the lower platform 20; further, Each reversing device 50 is disposed on each connecting portion 21 of the lower platform 20 and located between each connecting portion 21 of the lower platform 20 and the corresponding casing 23 .

As shown in Figure 4, the aforesaid reinforcing element 60 is arranged between the two pivot groups 30, the reinforcing element 60 includes a front reinforcing member 61 and a rear reinforcing member 62, and the two ends of the front reinforcing member 61 are respectively connected to the two pivot groups. The two ends of the main pivot arm 31 of the rear reinforcement member 62 are respectively connected with the auxiliary pivot arms 32 of the two pivot groups 30 .

During actual use, the lifting table of the present invention is first placed on a desktop, and the items needed for work can be placed on the upper platform 10 as required, such as: computers, documents, desk lamps, stationery, etc., and then can be placed according to the working posture. Adjust the relative distance between the upper platform 10 and the lower platform 20;

Specifically, as shown in FIG. 3 , FIG. 8 to FIG. 10 and FIG. 12 , when descending, the pullers 42 of the two fastening groups 40 are first respectively pulled, so that the first linkage group of each fastening group 40 A linkage 431, a second linkage 432, and a third linkage 433 are sequentially linked, compress the elastic reset piece and simultaneously pull the bolt 41, so that the bolt 41 is detached from the corresponding pivot joints 30. The at least one through hole 3111 of the clamping portion 311 of the main pivot arm 31 is connected to the corresponding through hole 111 of the connecting portion 11 of the upper platform 10 , so that the main pivot arm 31 of each pivot group 30 is connected to the upper platform 10 Release the relatively fixed state, then the main pivot arm 31 and the auxiliary pivot arm 32 of each pivot group 30 can rotate relatively with the corresponding connecting portion 11 of the upper platform 10, and the main pivot arm of each pivot group 30 31 and the auxiliary pivot arm 32 can rotate relative to the corresponding connecting portion 21 of the lower platform 20, thereby reducing the distance between the upper platform 10 and the lower platform 20, and the upper platform 10 has a lowering effect relative to the lower platform 20. ;

As shown in Fig. 3 and Fig. 8 to Fig. 11, when the upper platform 10 and the lower platform 20 are adjusted to an appropriate distance or close to each other, stop pulling the pullers of each clamping group 40, so that each clamping group 40 The elastic resetting part 44 affects the second linking part 432 of the linkage group 43 through its own elastic force, and at the same time makes the first linking part 431 and the third linking part 433 move in sequence to affect the bolt part 41, thereby making the bolt The member 41 is passed through one of the through holes 3111 of the clamping part 311 of the main pivot arm 31 of each corresponding pivot group 30 and the corresponding through hole 111 of the connecting part 11 of the upper platform 10, so that the upper platform The distance between 10 and the lower platform 20 is fixed;

Further, as shown in FIG. 3 , FIG. 10 and FIG. 11 , when the auxiliary pivot arm 32 of each pivot group 30 rotates relative to the upper platform 10 and the lower platform 20, the auxiliary pivot arm 32 of each pivot group 30 The convex part 321 of the arm 32 can slide in the long hole 211 of the corresponding connection part 21 of the lower platform 20, and at the same time make the elastic reset part 51 of the corresponding reversing device 50 elongated and deformed;

Furthermore, as shown in FIG. 11 , since the fulcrum element 54 abuts against the bottom side of the elastic piece 53, when the upper platform 10 and the lower platform 20 gradually abut each other, the protrusions of the secondary pivot arms 32 of each pivot group 30 will 321 will abut against the elastic piece 53 of the corresponding reversing device 50, so that the elastic piece 53 bends;

As shown in Fig. 3, Fig. 8 and Fig. 9, when it is desired to increase the distance between the upper platform 10 and the lower platform 20, the pullers 42 of the two fastening groups 40 are respectively pulled at the same time, and the connection of each fastening group 40 is affected. moving group, compress the elastic reset member 44 and the bolt 41, and then make the bolt 41 disengage from the perforation 3111 of the clamping part 311 of the main pivot arm 31 of each pivot group 30 corresponding to the connecting part 11 of the upper platform 10 The corresponding through-holes 111 are used to release the relatively fixed state of each pivot joint group 30 and the upper platform 10, so that the distance between the upper platform 10 and the lower platform 20 can be increased, and the upper platform 10 is relatively lower than the lower platform 20. have a rising effect;

Further, as shown in FIG. 3 , FIG. 10 and FIG. 11 , when the auxiliary pivot arm 32 of each pivot group 30 rotates relative to the upper platform 10 and the lower platform 20, the auxiliary pivot arm 32 of each pivot group 30 The convex part 321 of the arm 32 can slide in the long hole 211 of the corresponding connecting part 21 of the lower platform 20, and at the same time make the elastic reset member 51 of the corresponding reversing device 50 compressed and restored;

Furthermore, when the distance between the upper platform 10 and the lower platform 20 gradually increases, the convex portion 321 of the auxiliary pivot arm 32 of each pivot group 30 will gradually not abut against the corresponding reverse device 50. on the elastic piece 53, so that the elastic piece 53 recovers without bending.

To sum up, the advantage of the present invention is that the upper platform 10 can be raised or lowered relative to the lower platform 20, so that the distance between the upper platform 10 and the lower platform 20 can be adjusted in due course according to demand, and the posture can be changed from a sitting position to a standing position, or Changing from a standing posture to a sitting posture can adjust the posture in a timely manner, and can also work while changing the posture, which can solve the health hazards of maintaining a sitting or standing posture for a long time, and can also maintain work productivity, achieving a balance between health and The effect on work productivity.

On the other hand, because a large amount of articles can be placed on the upper platform 10 in use, and the load on the upper platform 10 is increased, it is difficult to make the upper platform 10 rise relative to the lower platform 20; 53 and the fulcrum element 54, when the upper platform 10 rises relative to the lower platform 20, the elastic force of the elastic return member and the elastic force of the elastic piece 53 will act on the convex portion 321 of the auxiliary pivot arm 32 of the corresponding pivot group 30, And the convex part 321 of the auxiliary pivot arm 32 of each auxiliary pivot group 30 is moved to the upper end by the lower end of the elongated hole 211 of the corresponding connection part of the lower platform 20, that is, the auxiliary pivot arm 32 of each pivot group 30 Generate an upward lifting force and act on the upper platform 10 at the same time (because the secondary pivot arms 32 of each pivot group 30 are pivotally connected with the corresponding connecting parts of the upper platform 10), the user can use the The upper platform 10 rises relative to the lower platform 20 .

On the other hand, through the setting of the reinforcing element 60, the two pivot joint groups 30 are fixed to each other, and the structural strength between the two pivot joint groups 30 can be strengthened, thereby avoiding the shaking and instability of the upper platform 10 when lifting and lowering the lower platform 20 , that is, the upper platform 10 can be raised and lowered relatively to the lower platform 20 smoothly.

On the other hand, when the upper platform 10 is lifted, the overall center of gravity of the present invention will move between the upper platform 10 and the lower platform 20, and when the upper platform 10 is placed with various items required for work, such as: computer For screens, keyboards, etc., due to the weight of the device, the total center of gravity of the present invention and the object will move and be biased towards the upper platform 10, which may cause the present invention to tilt together with the object, causing the object to fall over or damage; by the setting of each counterweight 22, the weight of the lower platform 20 can be increased, and when an article within a certain weight range is set on the upper platform 10, the lower platform 20 can balance the total weight of the upper platform 10 and the article, so that The overall center of gravity is not deflected to any side, and then avoids the situation that the present invention tilts together with the article.

Next on the one hand, through the setting of each housing 23 of the lower platform 20 and the shell 46 of each fastening group 40, when performing the lifting operation, the user's fingers or other foreign objects will not be stuck into each fastening group 40, each connection The connection between the head and each pivot group 30 and each reversing device 50 can protect the safety of the user and each mechanism of the present invention, and can also beautify the appearance of the present invention at the same time.

In addition, the present invention further includes a tray 70;

In a preferred embodiment, as shown in Figure 1 and Figure 13, the tray 70 is detachably connected with the lower platform 20, the tray 70 includes a storage board 71 and two connecting parts 72, and the two connecting parts 72 are respectively connected It is arranged on both sides of the storage board 71, and the two connecting parts 72 of the tray 70 are respectively slidably arranged on the lower platform 20. Furthermore, the two connecting parts 72 of the tray 70 are respectively installed on each On the housing 23;

When in use, the tray 70 can be installed on the lower platform 20 as required, and items such as a keyboard can be placed, and the distance between the tray 70 and the lower platform 20 can be adjusted as required;

In a preferred embodiment, as shown in FIG. 14 , the tray 70A is arranged on the bottom side of the upper platform 10 , and the two ends of each connecting piece 72A of the tray 70A are respectively connected to the storage board 71A and the upper platform 10 ;

When in use, the tray 70A can be raised and lowered along with the upper platform 10. When the posture is adjusted, it is more convenient to use or take items placed on the tray 70, such as a keyboard; The invention is more convenient and more in line with the needs of the general working environment in use.

In addition, as shown in FIG. 15 , in a preferred embodiment, the main pivot arm 31 and the auxiliary pivot arm 32 of each pivot group 30 are covered with a protective element 80 respectively, and the protective element 80 can be EVA foam (ethylene-vinyl acetatecopolymer), so that when each pivot joint group 30 and the corresponding joint part 21 are rotated relative to each other, fingers can be prevented from reaching between each pivot joint group 30 and the corresponding joint part 21 by mistake. It is safer to accidentally pinch your fingers.

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art will Without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or be modified into equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present invention, according to the technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the claims of the present invention.

Claims (31)

1. A lift table, comprising: An upper platform, which includes two connecting parts, and the two connecting parts are relatively arranged on both sides of the bottom surface of the upper platform; It is characterized in that the lift table also includes: A lower platform, which is relatively arranged below the upper platform and selectively abuts against the bottom surface of the upper platform, the lower platform includes two connecting parts, and the two connecting parts are arranged on two connecting parts on the top surface of the lower platform. side, and each connecting portion of the lower platform is opposite to each connecting portion of the upper platform; Two pivot joint groups, the two pivot joint groups are opposite to each other, and each pivot joint group is pivotally connected to each connection part of the upper platform and the corresponding connection part of the lower platform at the same time; Two fastening groups, each fastening group is arranged on the bottom surface of the upper platform, and each fastening group is frequently and simultaneously fixed on the corresponding connecting portion of each pivot group and the upper platform. 2. The lift table as claimed in claim 1, wherein each pivot group comprises a main pivot arm and a secondary pivot arm, the main pivot arm is opposite to the secondary pivot arm, and each pivot group The main pivot arm and the auxiliary pivot arm are respectively pivotally connected to the connecting parts of the upper platform and the corresponding connecting parts of the lower platform. 3. The lift table as claimed in claim 1, wherein each fastening group includes a bolt, and the bolts of each fastening group are regularly and simultaneously threaded on the corresponding connecting parts of each pivotal group and the upper platform . 4. The lift table according to claim 2, wherein each fastening group includes a bolt, and the bolts of each fastening group are selectively threaded through the main pivot arm of each pivot group to correspond to the upper platform on each connection part. 5. The lift table according to claim 4, wherein at least one through hole is formed through each connecting portion of the upper platform, and a fastening portion is formed on the upper end of the main pivot arm, and a fastening portion is formed through the fastening portion. Several perforations, at least one perforation of the clamping part of the main pivot arm is selectively opposite to one of the through holes of the corresponding connecting part of the upper platform, and each clamping group includes a bolt, each clamping The bolts of one group are selectively passed through one of the through holes of the fastening part of the main pivot arm of each pivot group and the corresponding through holes of each connecting part of the upper platform at the same time. 6 . The lift table according to claim 5 , wherein each fastening set further comprises a puller and a linkage set, and the puller, linkage set, and bolt are sequentially connected in series. 7 . 7. The lift table according to claim 6, wherein the linkage set of each clamping set includes a first linkage, a second linkage and a third linkage, the first linkage, The second linkage and the third linkage are pivotally connected to each other in sequence, the first linkage is connected to the puller, the third linkage is connected to the bolt, and each locking The fastening group further includes an elastic return piece and a connecting piece. The connecting piece of each fastening set is arranged on the bottom surface of the upper platform and is pivotally connected with the second linking piece. One end of the elastic recovery piece is connected to the connecting piece. The piece is fixedly connected, and the other end thereof leans against the second linking piece near the first linking piece. 8. The lift table according to claim 7, wherein the first linkage of the linkage set of each clamping set is pivotally connected to the puller, and the first linkage of each clamping set is movable Embedded on the bottom surface of the upper platform. 9. The lift table as claimed in claim 8, wherein each fastening group comprises a shell, and the shell covers the second linkage, the third linkage, the elastic recovery piece, the connecting piece and the bolt, and the clamping The fixed casing is connected with the upper platform. 10. The lift table according to claim 1, comprising two reversing devices, each reversing device is arranged on the lower platform and connected with each pivot joint group, so that the upper platform can be easily raised relative to the lower platform. 11. The lift table according to any one of claims 2 to 9, wherein it comprises two reversing devices, each reversing device is arranged on the lower platform and is connected with each pivot joint group, so that the upper platform is easier The relative lower platform rises. 12. The lift table according to claim 11, wherein each reversing device comprises an elastic return member, and the two ends of the elastic return member respectively correspond to the corresponding connecting parts of the auxiliary pivot arm of each pivot group and the lower platform. connect. 13. The lift table as claimed in claim 11, wherein the lower ends of the secondary pivot arms of each pivot group protrude to form a convex portion, and each reversing device includes an elastic piece and a fulcrum element, the elastic pieces of each reversing device One end is connected to the lower platform, and the other end selectively abuts against the protrusion of the auxiliary pivot arm of the corresponding pivot group. The fulcrum elements of each reversing device are arranged on the lower platform, and the fulcrum elements abut against Lean against the bottom side of the shrapnel. 14. The lift table as claimed in claim 12, wherein the lower ends of the secondary pivot arms of each pivot group protrude to form a convex portion, and each reversing device includes an elastic piece and a fulcrum element, the elastic pieces of each reversing device One end is connected to the lower platform, and the other end selectively abuts against the protrusion of the auxiliary pivot arm of the corresponding pivot group. The fulcrum elements of each reversing device are arranged on the lower platform, and the fulcrum elements lean against the The bottom side of the shrapnel. 15. The lift table as claimed in claim 14, wherein each connecting portion of the lower platform is formed with a long hole through it, and the convex portion of the auxiliary pivot arm of each pivot group is slidably passed through the corresponding connecting portion of the lower platform In the elongated hole of the upper part, and one end where the elastic piece of each reversing device selectively abuts against the secondary pivot arm of the corresponding pivot group is opposite to the elongated hole. 16. The lift table as claimed in claim 1, comprising a reinforcing element connected between the two pivot groups. 17. The lift table as claimed in claim 2 or 3, wherein it comprises a reinforcing element, which is connected and arranged between the two pivot groups, and which comprises a front reinforcing member, and the two ends of the front reinforcing member are respectively connected to two The main pivot arm of the pivot group. 18. The lift table according to claim 2 or 3, wherein the reinforcement element comprises a rear reinforcement, and two ends of the rear reinforcement are respectively connected to the auxiliary pivot arms of the two pivot groups. 19. The lift table as claimed in claim 17, wherein the reinforcement element comprises a rear reinforcement, and two ends of the rear reinforcement are respectively connected to the secondary pivot arms of the two pivot groups. 20. The lift table according to claim 15, wherein it comprises a reinforcing element, the reinforcing element is connected between the two pivot groups, and it includes a front reinforcing piece and a rear reinforcing piece, the front reinforcing piece The two ends are respectively connected to the main pivot arms of the two pivot groups, and the two ends of the rear reinforcement are respectively connected to the auxiliary pivot arms of the two pivot groups. 21. The lift table as claimed in claim 1, 2, 3, 10 or 16, wherein the lower platform comprises several counterweights, and each counterweight is disposed on the lower platform. 22. The adjustable desk as claimed in claim 20, wherein the lower platform includes a plurality of counterweights, and each counterweight is disposed on the lower platform. 23. The lift table as claimed in claim 1, 2, 3 or 16, wherein the lower platform comprises two shells, each shell is arranged around the outer side of each connecting portion, and each shell of the lower platform is located on the corresponding The outside of the pivot group. 24. The lift table according to claim 10, wherein the lower platform comprises two shells, each shell is arranged around the outer side of each connecting portion, and each shell of the lower platform is located on the outer side of the corresponding pivot joint group, Each reversing device is located between each connecting portion of the lower platform and the corresponding housing. 25. The lift table as claimed in claim 22, wherein the lower platform comprises two shells, each shell is arranged around the outer side of each connecting portion, and each shell of the lower platform is located on the outer side of the corresponding pivot joint group, Each reversing device is located between each connecting portion of the lower platform and the corresponding housing. 26. An adjustable desk as claimed in claim 1, 2, 3, 10, 16 or 24, comprising a tray detachably connected to the lower platform. 27. The lift table as claimed in claim 26, wherein the tray includes a storage board and two connecting parts, the two connecting parts are respectively connected and arranged on both sides of the storage board, and the two connecting parts of the tray are respectively It is slidably arranged on the lower platform. 28. The lift table according to claim 25, comprising a tray, the tray is detachably connected to the lower platform, the tray includes a storage board and two connecting parts, and the two connecting parts are respectively connected to the storage board The two sides of the tray, and the two connecting parts of the tray are respectively slidably arranged on the two shells of the lower platform. 29. An adjustable desk as claimed in claim 1, 2, 3, 10, 16 or 24, comprising a tray disposed on the underside of the upper platform. 30. The lift table as claimed in claim 29, wherein the tray comprises a storage board and two connecting parts, and two ends of each connecting part of the tray are respectively connected to the storage board and the upper platform. 31. The lift table according to claim 25, comprising a tray, the tray is arranged on the bottom side of the upper platform, the tray includes a storage board and two connecting parts, each connecting part of the tray The two ends are respectively connected with the storage board and the upper platform.