Automatic lifting workbench for display screen

Abstract

The utility model relates to an automatic lifting workbench for a display screen, which can realize automatic lifting of the workbench, can lift the display screen when in use, and can retract the display screen into the workbench when not in use, so that the display screen is prevented from being easily damaged due to long-term exposure, and the cleanliness of the workbench surface is ensured. According to the technical scheme, the device comprises a workbench, and a lifting mechanism is arranged in the lower portion of the workbench; the lifting mechanism drives the display screen support to ascend and descend, and the display screen support is used for fixing a display screen. The display screen lifting opening is formed in the upper surface of the working table and is a channel for the display screen bracket to lift between the interior of the working table and the upper part of the working table; and the turnover plate covers the display screen lifting opening, and one side edge of the turnover plate is rotationally connected to the workbench. An embedded keyboard box and a mouse box are arranged on the working table; after the box cover can be opened by 90 degrees, the box cover is vertically placed through the rotating shaft fixed to the box body and the U-shaped groove in the box cover, and space is not occupied.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle-mounted mobile workstation technical field especially is a kind of display screen automatic lifting workstation. BACKGROUND

[0002] The workstation of vehicle-mounted mobile shelter is an important platform for operation and information processing. The workstation with display screen is widely used in various fields as a device with display, control and man-machine interactive operation function. The display screen of ordinary console cannot be adjusted and can only be placed on the table top, resulting in a messy table top. Moreover, the display screen is exposed for a long time when not in use, which may cause damage to the display itself. It is difficult to combine the functions of the workstation and the display control console. Therefore, a display screen automatic lifting workstation is designed, which can realize two different functions of the workstation. It not only meets the functionality and improves the user experience, but also has strong versatility and simple and beautiful structure. SUMMARY

[0003] To solve the above technical problems, the utility model relates to a kind of display screen automatic lifting workstation, can realize the automatic lifting of workstation, when using, the display screen is lifted, when not in use, display screen is collected to the inside of workstation, not only avoid the display screen long-term exposure to the outside and be easily damaged, and ensure the neatness of table top.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: a kind of display screen automatic lifting workstation, including workstation, still include:

[0005] Lifting mechanism, the lifting mechanism is placed in the inside below workbench;

[0006] Display screen support, the lifting mechanism drives the lifting of display screen support, and the display screen support is used to fix display screen;

[0007] Display screen lifting opening, its opening is on the upper surface of workbench, and the passage for display screen support to lift between the inside of workbench and the above workbench;

[0008] Folding plate, the folding plate covers on display screen lifting opening, and one side of folding plate is rotatably connected on workbench.

[0009] Further, the lifting mechanism includes,

[0010] Lifting motor assembly, which is installed in the lower end inside the workbench;

[0011] Transmission mechanism A and transmission mechanism B, the transmission mechanism A and transmission mechanism B are connected on the two sides of lifting motor assembly respectively;

[0012] Lifting screw rod A and lifting screw rod B are rotatably connected to the left and right sides of the workbench respectively, and both of them are arranged vertically; the lifting motor assembly drives the lifting screw rod A to rotate through the transmission mechanism A, and drives the lifting screw rod B to rotate through the transmission mechanism B;

[0013] Lifting support plate A is threadedly connected to the lifting screw rod A, and lifting support plate B is threadedly connected to the lifting screw rod B;

[0014] The display screen support is fixedly connected between the lifting support plate A and the lifting support plate B.

[0015] Further, one side of the lifting screw rod A and the lifting screw rod B is provided with a light lever fixed in the workbench and arranged vertically, and the lifting support plate A and the lifting support plate B are respectively slidably connected to the corresponding light lever.

[0016] Further, the transmission mechanism A and the transmission mechanism B both include a telescopic universal joint;

[0017] The transmission mechanism A further includes a transmission box A, which is connected with the corresponding telescopic universal joint and the lifting screw rod A respectively;

[0018] The transmission mechanism B further includes a transmission box B, which is connected with the corresponding telescopic universal joint and the lifting screw rod B respectively.

[0019] Further, the folding plate is rotatably connected to the rear side of the display screen lifting opening through a folding shaft, and the folding plate can open and close the display screen lifting opening during the lifting process of the display screen.

[0020] Further, the structure that the folding plate can open and close the display screen lifting opening includes the following parts:

[0021] Pull plate, which is fixed on one of the lifting support plates;

[0022] Folding gear, which is sleeved on the end of the folding shaft on the side of the pull plate;

[0023] L-shaped support plate, which is fixed inside the workbench and placed on one side of the folding gear;

[0024] Folding rack, which is engaged with the folding gear and is vertically slidably connected to the vertical plate part of the L-shaped support plate;

[0025] Slide rod, which is fixed at the bottom end of the folding rack and is vertically slidably connected to the horizontal plate part of the L-shaped support plate and extends downward;

[0026] A spring is connected between the folding rack and the horizontal plate of the L-shaped support plate, and the spring is sleeved on the sliding rod.

[0027] A pull rope is connected between the pull plate and the sliding rod.

[0028] Further, the lifting motor assembly is composed of a driving motor and a speed reducer;

[0029] The output shaft of the speed reducer extends out of the speed reducer along the axial direction of the output shaft, and the two ends of the output shaft of the speed reducer are connected with transmission mechanism A and transmission mechanism B, respectively.

[0030] The input shaft of the speed reducer extends out of the speed reducer along the axial direction of the input shaft, one end of the input shaft of the speed reducer is connected with the driving motor, and the other end of the input shaft of the speed reducer is connected with a crank handle, and the hand-holding part of the crank handle is manually held and shaken to drive the output shaft of the speed reducer to rotate.

[0031] Further, the keyboard box and the mouse box are opened on the table top of the workbench, and the keyboard box and the mouse box are arranged in front of the display screen lifting opening.

[0032] The upper end openings of the keyboard box and the mouse box are respectively connected with box covers in a rotating manner.

[0033] Further, the rear side of the keyboard box and the mouse box is rotatably connected with the box cover, the rear side of the keyboard box and the mouse box is provided with a U-shaped groove with an upper opening, and the rear side of the box cover extends into the range of the U-shaped groove.

[0034] Further, the front side of the lower part of the workbench is provided with an access door.

[0035] The workbench has the advantages that:

[0036] 1. The display screen in the workbench can automatically lift, and two different functions of the workbench and the display control operation table can be realized; the lifting mechanism is fixed below the workbench, the transmission shaft is driven to rotate the lead screw through the forward and reverse rotation of the motor, so that the lifting of the display screen support and the opening and closing of the cover plate are realized. The overall structure is simple and beautiful, and the functionality is improved while the user experience is improved.

[0037] 2. The keyboard box and the mouse box are embedded on the workbench top; the box cover can be opened by 90 degrees, and the box cover is vertically placed in the U-shaped groove of the box cover through the fixed rotating shaft of the box body, so that the space is not occupied; when the display screen is used, the display screen can be operated and used by pressing the power key on the table top to lift and expand; when not in use, the keyboard and mouse boxes can be stored by pressing the corresponding power key, and the workbench top is flat after the keyboard and mouse boxes are covered, so that the workbench top can be used; the functions of the workbench and the display control operation table are realized.

[0038] 3.The maintenance door is arranged below the workbench, the maintenance door can be taken off by pressing the door lock to maintain the lifting mechanism, a manual rocker is arranged as an emergency backup scheme, the display screen is manually unfolded and folded by manually rotating the motor, function failure caused by power failure is avoided, and the fault tolerance of the equipment is enhanced.

[0039] 4.The motor driving screw transmission system is adopted, synchronous control of display screen lifting and cover plate opening and closing is realized through mechanical structure optimization, the structure is compact and stable in operation, mode switching is completed through one-key operation, and operation convenience and user experience are significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0041] Figure 1 It is a front view of the present application Figure 1 (folding plate closed);

[0042] Figure 2 It is a front view of the present application Figure 2 (folding plate opened);

[0043] Figure 3 It is a rear view of the internal lifting mechanism of the workbench of the present application

[0044] Figure 4 It is a front view of the present application

[0045] Figure 5 It is a rear view of the internal lifting mechanism of the workbench of the present application

[0046] Figure 6 It is Figure 5 an enlarged view of M part

[0047] Figure 7 It is a front view of the internal lifting mechanism of the workbench of the present application Figure 1 ;

[0048] Figure 8 It is Figure 7 an enlarged view of N part

[0049] Figure 9 It is a front view of the internal lifting mechanism of the workbench of the present application Figure 2 ;

[0050] Figure 10The structure schematic view between the box cover and the U-shaped groove.

[0051] Explanation of reference signs: workbench 10;

[0052] Lifting mechanism 20, lifting motor assembly 21, driving motor 211, speed reducer 212, crank 213, transmission mechanism A 22, transmission box A 221, transmission mechanism B 23, transmission box B 231, lifting lead screw A 24, lifting lead screw B 25, lifting support plate A 26, lifting support plate B 27, light lever 28, telescopic universal coupling 29;

[0053] Display screen support 30;

[0054] Display screen lifting opening 40;

[0055] Folding plate 50, folding pivot 51, pull plate 52, folding gear 53, L-shaped support plate 54, folding rack 55, slide rod 56, spring 57, pull rope 58;

[0056] Keyboard box 60;

[0057] Mouse box 70;

[0058] Box cover 80;

[0059] U-shaped groove 90;

[0060] Access door 100. Specific embodiments

[0061] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Figures 1-10 It is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0062] As shown in Figure 1 and 2 The utility model provides a display screen automatic lifting workbench, including workbench 10,

[0063] Lifting mechanism 20, the lifting mechanism 20 is placed in the lower inside of workbench;

[0064] Display screen support 30, the lifting mechanism 20 drives the lifting of display screen support 30, and the display screen support 30 is used to fix display screen;

[0065] Display screen lifting opening 40, which is opened on the upper surface of the workbench, provides a passage for the display screen support 30 to lift between the inside of the workbench and the upper part of the workbench;

[0066] A folding plate 50 is arranged on the display screen lifting opening 40, and one side of the folding plate 50 is rotationally connected to the workbench.

[0067] After the folding plate 50 covers the display screen lifting opening 40, the surface of the folding plate 50 is flush with the workbench top, and the workbench can be used as a flat workbench at this time. When the display screen is installed on the display screen support 30 and the display screen is lifted up, the workbench can be used as a display control operating table. The workbench of the utility model realizes two different functions, meets the functionality, improves the user experience, has strong universality, the appearance structure is simple and beautiful, and the product competitiveness is improved.

[0068] As a preferred embodiment of the lifting mechanism 20 of the utility model, as shown in Figures 3-6 The lifting mechanism 20 comprises:

[0069] A lifting motor assembly 21 is installed at the lower end inside the workbench. The lower part of the workbench has a cavity, and the lifting assembly is installed in the cavity. The lifting motor assembly is composed of a driving motor 211 and a speed reducer 212. The output shaft of the speed reducer 212 extends out of the speed reducer 212 along the axial direction of the output shaft. The output shaft of the speed reducer 212 is connected to transmission mechanism A22 and transmission mechanism B23 at both ends thereof. The input shaft of the speed reducer 212 extends out of the speed reducer 212 along the axial direction of the input shaft. One end of the input shaft of the speed reducer 212 is connected to the driving motor 211 (if the output shaft of the driving motor is collinear with the input shaft of the speed reducer, the two are directly connected through a shaft coupling, and if the two are perpendicular, the two are connected through a pair of bevel gears). The other end of the input shaft of the speed reducer 212 is connected to a crank 213. The hand holding part of the crank 213 extends out of the workbench. The hand holding part of the crank 213 is manually held and shaken to drive the output shaft of the speed reducer 212 to rotate. As an embodiment of the speed reducer 212, a first bevel gear is sleeved on the output shaft of the speed reducer 212. A second bevel gear meshing with the first bevel gear is sleeved on the input shaft of the speed reducer 212. The number of teeth of the second bevel gear is less than that of the first bevel gear. In use, the driving motor 211 drives the input shaft to rotate. The second bevel gear of the input shaft drives the first bevel gear, and the first bevel gear drives the output shaft to rotate. The utility model is provided with the hand crank 213. The display screen is manually unfolded and folded by manually rotating the motor. When the maintenance door 100 is provided, the crank 213 is in the maintenance door. When the hand crank is needed, the maintenance door 100 is opened.

[0070] Transmission mechanism A22 and transmission mechanism B23 are connected to the two sides of the lifting motor assembly 21 respectively.

[0071] Lifting screw A24 and lifting screw B25, which are respectively rotatably connected to the left and right sides of the workbench and are arranged vertically; the lifting motor assembly 21 drives the lifting screw A24 to rotate through the transmission mechanism A22, and drives the lifting screw B25 to rotate through the transmission mechanism B23;

[0072] Lifting support plate A26 and lifting support plate B27, which are respectively threadedly connected to the lifting screw A24 and the lifting screw B25;

[0073] The display screen support 30 is fixedly connected between the lifting support plate A26 and the lifting support plate B27;

[0074] The transmission mechanism A22 and the transmission mechanism B23 are designed to transmit power to the lifting screw A24 and the lifting screw B25, so that the two lifting screws simultaneously drive the lifting support plates corresponding thereto to synchronously ascend or descend, thereby driving the display screen support 30 to ascend or descend.

[0075] As a preferred, in order to improve the stability of the display screen lifting, one side of the lifting screw A24 and the lifting screw B25 is provided with a light lever 28 fixed in the workbench and arranged vertically, and the lifting support plate A26 and the lifting support plate B27 are respectively slidably connected to the light lever corresponding thereto.

[0076] As a preferred, the transmission mechanism A22 and the transmission mechanism B23 both include a telescopic universal coupling 29;

[0077] The transmission mechanism A22 further includes a transmission box A221, which is respectively connected to the telescopic universal coupling 29 and the lifting screw A24 corresponding thereto;

[0078] The transmission mechanism B23 further includes a transmission box B231, which is respectively connected to the telescopic universal coupling 29 and the lifting screw B25 corresponding thereto.

[0079] The power transmission using the telescopic universal coupling 29 can reduce the installation precision of the devices connected at both ends of the coupling, and ensures the adjustability of the positions of the devices at both ends. The telescopic universal couplings 29 at the left and right ends of the reduction gearbox 212 transmit power to the transmission boxes, and the transmission boxes transmit power to the lifting lead screws. When the rotation directions of the threads of the two lifting lead screws are the same, the rotation directions of the two lifting lead screws need to be consistent to maintain the lifting of the display screen support 30. At this time, an embodiment of the transmission box is that: the transmission box has a third bevel gear and a fourth bevel gear inside, the gear shaft of the third bevel gear is connected to the telescopic universal coupling 29, and the gear shaft of the fourth bevel gear is arranged vertically and connected to the lifting lead screw. At this time, the third bevel gears in the transmission box A 221 and the transmission box B 231 are all engaged on the same side of the corresponding fourth bevel gears in the transverse direction (that is, both third bevel gears are on the left side or the right side of the corresponding fourth bevel gears). The rotation directions of the lifting lead screw A 24 and the lifting lead screw B 25 are consistent, so as to synchronously lift or lower the lifting support plate A 26 and the lifting support plate B 27 respectively. When the rotation directions of the threads of the two lifting lead screws are opposite, the third gears in the transmission box A 221 and the transmission box B 231 are respectively engaged on the opposite sides of the corresponding fourth gears in the transverse direction (that is, one third bevel gear is on the left side of the corresponding fourth bevel gear, and the other third bevel gear is on the right side of the corresponding fourth bevel gear), so that the rotation directions of the lifting lead screw A 24 and the lifting lead screw B 25 are opposite, so as to synchronously lift or lower the lifting support plate A 26 and the lifting support plate B 27 respectively.

[0080] The lifting mechanism 20 reduces the rotating speed of the motor through the reduction gearbox 212, reduces the installation precision through the telescopic universal coupling 29, and further ensures the stability of power transmission. The transmission box is used for converting the rotation of the horizontal shaft into the rotation of the vertical shaft of the lifting lead screw. The lifting lead screw drives the lifting of the display screen support 30, has the effect of real-time positioning the display screen support 30 at the lifting height, and the lifting is safe and stable.

[0081] As an embodiment of the folding plate 50 part of the utility model, as shown in Figures 6-9 The folding plate 50 is rotatably connected to the rear side of the display screen lifting opening 40 through the folding rotating shaft 51, and the folding plate 50 can open and close the display screen lifting opening 40 in the display screen lifting process. The structure of the power transmission of the lifting motor assembly 21 to the folding plate 50 comprises the following parts:

[0082] The pull plate 52 is fixed on one of the lifting support plates, and the pull plate 52 rises and falls with the lifting support plate;

[0083] The folding gear 53 is sleeved on the end of the folding rotating shaft 51 on the side of the pull plate 52;

[0084] An L-shaped support plate 54 is fixed inside the workbench and placed on one side of the folding gear 53;

[0085] A folding rack 55 is engaged with the folding gear 53 and is vertically slidingly connected to the vertical plate portion of the L-shaped support plate 54;

[0086] A slide rod 56 is fixed to the bottom end of the folding rack 55 and is vertically slidingly connected to the horizontal plate portion of the L-shaped support plate 54 and extends downward;

[0087] A spring 57 is connected between the rack and the horizontal plate of the L-shaped support plate 54 and is sleeved on the slide rod 56;

[0088] A pull rope 58 is connected between the pull plate 52 and the slide rod 56.

[0089] In specific use, in the operating workbench state, the folding plate is closed, and at this time the spring 57 is in a compressed state under the action of the pull rope 58. When it is needed to switch from the operating workbench to the display control operating table, the button is pressed to start the driving motor 211, the driving motor 211 transmits power to the speed reducer 212, the speed reducer 212 transmits power to the telescopic universal coupling 29 at both ends, and then drives the rotation of the lifting lead screws A24 and B25 through the transmission box, and then drives the display screen support 30 between the lifting support plates A26 and B27 to move upward, in the process of upward movement of the display screen, the pull plate 52 synchronously follows the lifting of the support plate, the upward movement of the pull plate 52 causes the pull rope 58 to gradually release the spring 57, under the elastic force of the spring 57, the slide rod 56 moves upward against the folding rack 55, the folding rack 55 drives the rotation of the folding gear 53, the folding gear 53 drives the folding plate 50 to turn and open the display screen lifting opening 40 through the folding shaft 51, the display screen support continues to rise with the display screen, and is lifted from the display screen lifting opening 40 to above the workbench top, at this time the driving motor stops rotating. Thus, the switching of the display control operating table is completed. It should be noted that in the process of pressure release of the spring 57, the stroke is sufficient to open the folding plate 50, after the folding plate 50 is opened, the pull plate 52 continues to rise with the display screen, and at this time the pull rope 58 is in a relaxed state.

[0090] When it is needed to switch from the display control operating platform to the operating workbench, the driving motor 211 is started to reverse, the display screen is driven to descend from above the workbench, the pull plate 52 is followed to descend, until the display screen is completely retracted into the workbench from the display screen lifting opening 40, then the pull rope 58 starts to be straightened, after the pull rope 58 is straightened, the pull plate 52 continues to descend, so that the pull rope pulls the sliding rod 56, the sliding rod 56 pulls the folding rack 55 to drive the folding gear 53 to rotate, in the process of the folding rack 55 moving downward, the spring 57 is compressed to store energy for the next time of opening the folding plate 50. The folding gear 53 rotates to drive the folding shaft 51 to cover the folding plate 50 on the display screen lifting opening 40. At this time, the upper surface of the workbench is converted into a flat mode. Since the screw rod is used to drive the lifting of the display screen support, the screw rod has self-locking property, so that the display screen support can be stopped at any position within the stroke range.

[0091] The above structure can not only automatically lift and lower the display screen through one-key starting, but also open and close the display screen lifting opening through the power of the same driving motor 211 by turning over the folding plate 50. One-key switching between the display control operating platform and the operating workbench is realized.

[0092] As an embodiment of the utility model, as shown in Figure 1 、 2 and 10, the keyboard box 60 and the mouse box 70 are opened on the tabletop of the workbench, the keyboard box 60 and the mouse box 70 are arranged in front of the display screen lifting opening 40, and the box cover 80 is rotatably connected to the upper end opening of the keyboard box 60 and the upper end opening of the mouse box 70 respectively. The keyboard is placed on the keyboard box 60, the mouse is placed in the mouse box 70, and when not used, the box cover 80 is covered to ensure the flatness of the tabletop. When it is needed to switch to the display control operating platform, the box cover 80 is opened to expose the keyboard and the mouse.

[0093] As a preferred, the rear side of the keyboard box 60 and the mouse box 70 is rotatably connected with the box cover 80, the rear side of the keyboard box 60 and the mouse box 70 is provided with a U-shaped groove 90 with an upper opening, and the rear side of the box cover 80 extends into the range of the U-shaped groove 90. This structure makes the rear part of the box cover 80 be clamped by the U-shaped groove after the box cover 80 is turned up, and the box cover 80 is in a vertical state slightly inclined backward without occupying space.

[0094] As an embodiment of the utility model, as shown in Figure 1 and 2 , the lower front side of the workbench is provided with a maintenance door 100. The equipment in the lower cavity of the workbench can be maintained after the maintenance door 100 is opened.

[0095] In summary, the display screen of the utility model can be automatically lifted and lowered, has the functions of the workbench and the display control operating platform, and is convenient to store as a whole. The maintenance door 100 is convenient for maintenance. The handle is convenient for manual lifting of the display screen.

Claims

1. A display screen automatic lifting worktable comprising a worktable (10), characterized in that, Also include, Lifting mechanism (20), the lifting mechanism (20) is placed in the lower part of the workbench (10) inside; Display screen support (30), the lifting mechanism (20) drives the lifting of display screen support (30), the display screen support (30) is used to fix the display screen; Display screen lifting opening (40), which is opened on the upper surface of the workbench (10), and the display screen support (30) is lifted between the inside of the workbench (10) and the upper part of the workbench (10); The folding plate (50) covers the display screen lifting opening (40), and one side of the folding plate (50) is rotatably connected to the workbench (10).

2. The automatic display screen lifting table according to claim 1, characterized in that, The lifting mechanism (20) includes, Lifting motor assembly (21), which is installed in the lower end of the workbench (10) inside; Transmission mechanism A (22) and transmission mechanism B (23), the transmission mechanism A (22) and the transmission mechanism B (23) are connected on both sides of the lifting motor assembly (21) respectively; Lifting screw A (24) and lifting screw B (25), the lifting screw A (24) and the lifting screw B (25) are rotatably connected to the left and right sides of the workbench (10) inside, and both of them are arranged vertically; the lifting motor assembly (21) drives the lifting screw A (24) to rotate through the transmission mechanism A (22), and the lifting motor assembly (21) drives the lifting screw B (25) to rotate through the transmission mechanism B (23); Lifting support plate A (26) and lifting support plate B (27), the lifting support plate A (26) is threadedly connected to the lifting screw A (24), and the lifting support plate B (27) is threadedly connected to the lifting screw B (25); The display screen support (30) is fixedly connected between the lifting support plate A (26) and the lifting support plate B (27).

3. A display screen automatic lifting table according to claim 2, characterized in that, One side of the lifting screw A (24) and the lifting screw B (25) is provided with a light lever (28) fixed in the workbench (10) and arranged vertically, and the lifting support plate A (26) and the lifting support plate B (27) are respectively slidably connected to the corresponding light lever (28).

4. The display screen automatic lifting table according to claim 2, characterized in that, The transmission mechanism A (22) and the transmission mechanism B (23) both include a telescopic universal joint (29); The transmission mechanism A (22) further includes a transmission box A (221), and the transmission box A (221) is connected with the corresponding telescopic universal joint (29) and the lifting screw A (24) respectively; The transmission mechanism B (23) further includes a transmission box B (231), and the transmission box B (231) is connected with the corresponding telescopic universal joint (29) and the lifting screw B (25) respectively.

5. The display screen automatic lifting table according to claim 2, characterized in that, The folding plate (50) is rotatably connected to the rear side of the display screen lifting opening (40) through the folding pivot (51), and the folding plate (50) can open and close the display screen lifting opening (40) during the lifting of the display screen.

6. A display screen automatic lifting table according to claim 5, characterized in that, The structure that the folding plate (50) can open and close the display screen lifting opening (40) includes the following parts: Pull plate (52), the pull plate (52) is fixed on one of the lifting support plates; A folding gear (53) is sleeved on the end of the folding rotating shaft (51) on the side of the pull plate (52); An L-shaped support plate (54) is fixed inside the workbench (10) and placed on the side of the folding gear (53); A folding gear rack (55) is engaged with the folding gear (53) and vertically slidably connected to the vertical plate part of the L-shaped support plate (54); A slide rod (56) is fixed to the bottom end of the folding gear rack (55) and vertically slidably connected to the horizontal plate part of the L-shaped support plate (54) and extends downward; A spring (57) is connected between the folding gear rack (55) and the horizontal plate of the L-shaped support plate (54) and sleeved on the slide rod (56); A pull rope (58) is connected between the pull plate (52) and the slide rod (56).

7. The display screen automatic lifting table according to claim 2, characterized in that, The lifting motor assembly (21) is composed of a driving motor (211) and a speed reducer (212); The output shaft of the speed reducer (212) extends out of the speed reducer (212) along its axial direction, and the two ends of the output shaft of the speed reducer (212) are respectively connected to the transmission mechanism A (22) and the transmission mechanism B (23); The input shaft of the speed reducer (212) extends out of the speed reducer (212) along its axial direction, one end of the input shaft of the speed reducer (212) is connected to the driving motor (211), and the other end of the input shaft of the speed reducer (212) is connected to a crank (213), and the hand-held part of the crank (213) is manually held and shaken to drive the output shaft of the speed reducer (212) to rotate.

8. The display screen automatic lifting table according to claim 1, wherein, The workbench (10) is provided with a keyboard box (60) and a mouse box (70) on the surface of the workbench (10), and the keyboard box (60) and the mouse box (70) are placed in front of the display screen lifting opening (40); The upper end of the keyboard box (60) and the upper end of the mouse box (70) are respectively rotatably connected to a box cover (80).

9. A display screen automatic lifting table according to claim 8, characterized in that, The rear side of the keyboard box (60) and the rear side of the mouse box (70) are rotatably connected to the box cover (80), and the rear side of the keyboard box (60) and the rear side of the mouse box (70) are respectively provided with an upper opening U-shaped groove (90), and the rear side of the box cover (80) extends to the range of the U-shaped groove (90).

10. A worktable according to any one of claims 1 to 9, wherein, The workbench (10) is provided with a maintenance door (100) on the front side of the lower part.

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