CN112963700A

CN112963700A - Liftable display unit

Info

Publication number: CN112963700A
Application number: CN202110280406.XA
Authority: CN
Inventors: 杨劲松; 钟智; 吴涛; 龚登位; 温世伶; 张鹤鸣; 郭豪; 郑智燊; 金威; 马庆志
Original assignee: Huaneng Lancang River Hydropower Co Ltd
Current assignee: Huaneng Lancang River Hydropower Co Ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-06-15
Anticipated expiration: 2041-03-16
Also published as: CN112963700B

Abstract

The invention relates to a liftable display unit, which comprises a display, a base, a telescopic bracket and a foldable keyboard bracket, the bottom end of the telescopic bracket is connected with the base, and the top end is connected with the display; the foldable The keyboard bracket of the invention includes two or more folding parts, wherein the first folding part is connected with the display, and the first folding part is connected with a second folding part through a pivot. The display unit provided by the invention can flexibly adjust the angle and orientation of the display, has a large height adjustment range, can adapt to the standing and sitting postures of users of different heights, is easy to operate, and the keyboard bracket can be synchronized with the rise and fall of the display. Lift, convenient for users to use.

Description

Liftable display unit

Technical Field

The present invention relates to computer equipment, and particularly to a liftable display unit.

Background

In the field of computers, displays are widely used as an information output device. In some existing applications, the desktop monitor is fixedly connected to the bracket, that is, after the monitor and the bracket are installed, the angle and the height of the monitor are fixed and cannot be adjusted. When the connection mode is adopted, although the installation is simple and quick, the angle of the display is fixed, so that the use place and the range of the display are limited. In other applications, the desktop display is movably connected with the bracket, and after the display and the bracket are installed, a user can rotate the display and adjust the height of the display according to the use requirement, so that the application scene of the display is widened. However, the height adjustment range of such a display is limited, and the height adjustment range is usually set according to different heights on the premise of sitting posture of a user. With the gradual increase of the cognitive impairment of computer office to the body, more and more people tend to be able to work while standing occasionally, so it is important to design a display which facilitates the people to freely switch between sitting and standing postures.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a liftable display unit which can provide a large-range height adjustment to adapt to the use of people in sitting postures and standing postures.

In order to solve the technical problem, the invention provides a liftable display unit, which comprises a display, a base, a telescopic support and a foldable keyboard bracket, wherein the bottom end of the telescopic support is connected with the base, and the top end of the telescopic support is connected with the display; the foldable keyboard bracket comprises two or more than two folding parts, adjacent folding parts are connected through a pivot, and a first folding part is connected with the display.

Preferably, the first folding part is connected with a bottom frame of the display through a pivot.

Preferably, the display unit further comprises one or more support plates, the support plate comprising a fixed end and a multi-section bendable structure adjacent to the fixed end; the plurality of folds are disposed thereunder after being unfolded to increase the supporting strength.

Preferably, one end of the supporting plate is rotatably connected to a display frame on which the first folding part is fixed; or the back of the display is provided with a corresponding supporting plate placing part and a corresponding supporting plate supporting part; the supporting plate is inserted into the supporting plate placing part when not in use, the supporting plate supporting part is drawn out when in use, and the fixed end of the supporting plate is inserted into the slot in the supporting plate supporting part.

Preferably, the back of the display comprises a coupling block connected with the top end of the telescopic bracket; the first folding part of the foldable keyboard bracket is connected with the connecting block through an intermediate connecting piece; the bottom frame of the display is provided with a positioning hole/block, and the first folding part comprises a positioning block/hole corresponding to the positioning hole/block.

Preferably, two or more than two vertical slideways are arranged inside the connecting block;

the intermediate connector comprises a connecting plate and at least two sliding beams, wherein the connecting plate is connected with the first folding part through a pivot; one end of the sliding beam is connected to the connecting plate, and the other end of the sliding beam is matched with the slide way in the connecting block.

Preferably, one or more of the folds are of a collapsible construction; and the outermost edge of the keyboard bracket is provided with a blocking strip higher than the folding part.

Preferably, the stretchable structure comprises at least:

a first metal plate connected to the metal plate of the adjacent folded part by a pivot;

the second metal plate is provided with two or more slideways with limiting positions; and

and one end of each sliding strip is rotatably fixed on the first metal plate, and the other end of each sliding strip is a free end and is positioned in one sliding way in the second metal plate.

Preferably, the telescopic support comprises a plurality of stages of telescopic sleeves which are nested, the telescopic support comprises an electric driving part and a lifting mechanism, the power output part of the electric driving part is connected with the lifting control end of the lifting mechanism, and the lifting end of the lifting mechanism is fixedly connected with the bottom of the innermost sleeve.

Preferably, the display unit further comprises an upper end rotary connecting part and a lower end rotary connecting part, and the upper end rotary connecting part is connected between the display and the top of the innermost sleeve; the lower end rotary connecting part is connected between the bottom and the outermost sleeve.

The display unit provided by the invention can flexibly adjust the angle and the orientation of the display, has a larger height adjustment range, can adapt to standing postures and sitting postures of users with different heights, is simple and convenient to operate, and the keyboard bracket can synchronously lift along with the lifting of the display, thereby being convenient for the users to use.

Drawings

Preferred embodiments of the present invention will now be described in further detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic front perspective view of a display unit according to one embodiment of the present invention;

FIG. 2 is a schematic diagram of a rear perspective structure of a display unit according to one embodiment of the invention;

FIG. 3 is a schematic perspective view of a display unit according to one embodiment of the present invention after a keyboard tray is opened;

FIG. 4 is a schematic perspective view of a keyboard placed on a keyboard tray according to one embodiment of the present invention;

FIG. 5 is a schematic diagram of a bottom bezel of a display in a display unit according to an embodiment of the present invention;

FIG. 6 is a side view of a display and keyboard tray according to one embodiment of the present invention;

FIG. 7 is a perspective structural back schematic view of a display unit according to one embodiment of the invention;

FIG. 8 is a schematic diagram of a structure of a tray on the back of a display according to one embodiment of the invention;

FIG. 9 is a schematic view of the structure of the flat panel moving down after the pallet is removed from the back of the monitor according to one embodiment of the present invention;

FIG. 10 is a schematic diagram of a structure when a tray supports a keyboard tray according to one embodiment of the present invention;

FIG. 11 is a schematic view of a structure of a tray on the back of a display according to another embodiment of the invention;

FIG. 12 is a schematic view of the structure of the flat panel moving down after the tray is removed from the back of the monitor according to another embodiment of the present invention;

fig. 13 is a schematic view of a display height adjustable bracket according to an embodiment of the present invention when adjusting a lower end rotating part;

FIG. 14 is a schematic view of a height adjustable bracket for a display according to another embodiment of the present invention during adjustment of an upper end rotating portion;

FIG. 15 is a schematic view of a multi-stage telescoping sleeve as it collapses according to one embodiment of the present invention;

FIG. 16 is a schematic view of the structure of the extension portion of the multi-stage telescopic sleeve capable of being electrically lifted and lowered according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of a lift mechanism according to one embodiment of the present invention;

FIG. 18 is a schematic view of the connection of a keyboard tray and a coupling block according to one embodiment of the present invention;

FIG. 19 is a partial side view schematic diagram of a display unit with a keyboard tray open according to one embodiment of the present invention;

FIG. 20 is a schematic structural diagram of a keyboard tray according to another embodiment of the present invention; and

fig. 21 is a schematic front structure view of a display unit according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following detailed description, reference is made to the accompanying drawings that form a part hereof and in which is shown by way of illustration specific embodiments of the application. In the drawings, like numerals describe substantially similar components throughout the different views. Various specific embodiments of the present application are described in sufficient detail below to enable those skilled in the art to practice the teachings of the present application. It is to be understood that other embodiments may be utilized and structural, logical or electrical changes may be made to the embodiments of the present application.

Fig. 1 is a front perspective view of a display unit according to an embodiment of the present invention, and fig. 2 is a rear perspective view of the display unit according to an embodiment of the present invention. Referring to fig. 1 and 2, in the present embodiment, the display unit includes: display 1, height-adjustable bracket 2, collapsible keyboard bracket 3. The display 1 may include an outer frame and a display screen, the display screen is embedded in the outer frame, and the display screen may be any of various types and sizes of display screens at present. The back of the outer frame is provided with a power interface/wire, a data interface/wire and the like. In this embodiment, the bottom frame of the display 1 is connected to the foldable keyboard tray 3, the keyboard tray 3 comprises a plurality of folding portions, see fig. 3, a first folding portion 31 is pivotally connected to the bottom frame of the display 1, a second folding portion 32 is pivotally connected to the first folding portion 31, and a third folding portion 33 is also pivotally connected to the second folding portion 32. The first and second folding portions are a strip-shaped metal plate, and the third folding portion 33 is a telescopic structure formed by a plurality of strip-shaped metal plates 331 and diagonal sliding strips 332.

The second metal plate 331 is provided with a slide way, one end of each of the two slide bars 332 is fixed at the two ends of the first metal plate 331, and the other end can slide back and forth in the slide way of the second metal plate 331. The two ends of the slide way are limiting positions, and the maximum distance between two adjacent metal plates 331 can be controlled by setting the positions of the limiting positions. The number of the metal plates 331 may be two or more, and as shown in the drawing, three metal plates 331. The outermost metal plate 331 is further provided with a barrier 333 for shielding the keyboard after the keyboard is placed on the bracket, so as to prevent the keyboard from falling off, as shown in fig. 4.

When the keyboard tray is retracted, the plurality of metal plates of the third folding portion 33 are folded, and then each folding portion is folded back to the back of the display. In order to stably place the bracket behind the folding part on the back of the display 1, a plurality of magnetic blocks are arranged at corresponding positions on the back of the display 1, and the folding bracket is attracted to the back of the display 1 by a magnetic attraction method.

To increase the support strength of the keyboard tray, additional reinforcing braces are included in some embodiments, underlying the plurality of folds after they are unfolded.

As shown in fig. 5, a pivot 12 is disposed on the bottom frame 11 of the display 1, and the first folding portion 31 is connected to the display 1 through the pivot 12. Two supporting plates 4a are fixed on the bottom frame 11, one end of each supporting plate 4a is a fixed end and is rotatably connected to the bottom frame 11 of the display, and the other end of each supporting plate 4a is a free end. The support plate 4a is made of a rigid material, and the width of the support plate 4a is smaller than the thickness of the bottom rim 11. In other embodiments, a recess is provided in the bottom rim 11 for positioning the tray 4 a. When the pallet 4a is not in use, it is accommodated in the recess. In order to enhance the supporting strength of the keyboard tray 3, the supporting portion of the supporting plate 4a may be a plurality of metal plates that can be folded in parallel, and the plurality of metal plates can be folded in a recess when not in use, and can be taken out of the recess when in use. In other embodiments, the support plate 4a may be a telescopic structure to increase the support location. In order to make the supporting plate 4a fit with the back surface of the keyboard tray 3 well when in use, a flexible structure is provided near the fixed end of the supporting plate 4a, and as shown in fig. 6, the supporting plate 4a includes a rigid fixed end 40a, a flexible structure 41a, such as a chain structure, and a rigid supporting portion 42 a. By adjusting the flexible structure 41a, the supporting plate 4a and the keyboard bracket 3 can be well attached together, and the stability and strength of the support are improved.

Fig. 7-10 are related structural schematic diagrams of another pallet structure. In the present embodiment, the support plates 4b are fixed to both ends of the back surface of the display 1. The back of the display 1 is provided with a sliding groove, and two grooves of the sliding groove incline towards the middle along the 5 direction, so that the width of the groove bottom is larger than that of the groove opening, and a supporting plate placing part is formed. The flat plate 6 is inserted as a pallet support portion in the pallet placing portion. The lower inner surface of the plate 6 is provided with a groove 61 with a certain depth, and the outer surface of the plate 6 is provided with an operating part 62, such as a plurality of strip-shaped protrusions, for increasing friction force. The pallet 4b is inserted into a chute as a pallet placement portion and is stopped and fixed by a flat plate 6. When the keyboard tray 3 is used, the folded parts are unfolded to form a complete keyboard tray, the tray 4b is pulled out from the tray placing part, the operating part 62 is pressed and downward force is applied, the flat plate 6 slides downwards to expose the clamping groove 61, and the keyboard tray is shown in fig. 9. One end of the support plate 4b is inserted into the notch 61 as shown in fig. 10. The structure of the supporting plate 4b is similar to the embodiment shown in fig. 6, and includes a flexible structure 41b and a rigid supporting portion 42b for accommodating different angles between the keyboard tray 3 and the monitor 1.

In other embodiments, as shown in fig. 11-12. The two grooves 5 are elongated in length and the width of the grooves is slightly larger than that of the supporting plate 4b, and the flat plate 6 is arranged at the bottom of the grooves. When the clamping device is used, the supporting plate 4b is pulled out from the upper part of the sliding groove, and the flat plate 6 slides out towards the bottom of the sliding groove to expose the clamping groove 61.

In the present invention, the height-adjustable bracket 2 includes a base 21, a lower rotary joint 22, a multi-stage telescopic bracket 23, an upper rotary joint 24, and a coupling block 25, wherein the base 21 provides a stable center of gravity for the display unit, the lower rotary joint 22 is connected between the base 21 and the multi-stage telescopic bracket 23, and the upper rotary joint 24 is connected between the multi-stage telescopic bracket 23 and the coupling block 25. The coupling piece 25 is connected to the back of the display 1. Of course, the connecting block 25 may be integrated with the rear housing of the back of the monitor 1. In the present embodiment, the display angle of the display 1 can be adjusted conveniently and flexibly by the

rotary connection portions

22 and 24 at the upper and lower ends. One way of adjustment is: the multi-stage telescopic bracket 23 of the bracket 2 is pulled to drive the lower end rotary connecting part 22 to rotate, so that the pitching angle and the orientation of the display can be adjusted, and the height of the display 1 and the distance between the display and a user can be adjusted within a small range. As shown in fig. 13, to obtain a position after pulling the display unit of fig. 2 backwards, it can be seen that not only the height of the display 1 is reduced, but also the distance of the display from the user is increased and the orientation of the display is changed. The other adjustment mode is as follows: the display 1 is pulled to incline the display 1 to any angle. As shown in fig. 14, after the display 1 shown in fig. 2 is lifted upwards, the connecting block 25 of the display 1 drives the rotary connecting portion 24 at the upper end to rotate, so that the display angle can be adjusted by only pulling the display 1 under the condition that other parts of the display bracket 2 are fixed, and the use is convenient for a user.

The display bracket 2 of the present invention realizes height adjustment through the multi-stage telescopic bracket 23. As shown in fig. 15, the multi-stage telescopic bracket 23 is a multi-stage nested telescopic sleeve, and the top of the innermost sleeve is connected with the rotary connection part at the upper end. The bottom of the inner sleeve has an outwardly extending stop 233 (see fig. 16) that is wider than the opening of the outer sleeve. The height of the display is increased by gradually pulling out the sleeve. In one embodiment, the lifting is achieved manually, and corresponding to the manual lifting, a snap structure (not shown in the figure) with a reset function is arranged inside the vicinity of the opening of each external sleeve, when the external sleeve needs to be lifted, the upper end rotary connecting part 24 or the display 1 is pulled upwards, the innermost first sleeve 231 is driven to move upwards, and when the stop 233 of the external sleeve moves to the snap structure of the second sleeve 232, the stop 233 and the snap structure are fastened and fixed together. When the retraction is required, the reset button 234 is pressed, the stopper 233 is disengaged from the catch, the upper end rotary connection 24 is grasped, or the display 1 is pressed downward, so that the first sleeve 231 is returned to the original state.

In other embodiments, the lifting may also be achieved electrically, and the corresponding structure includes an electric driving part and a lifting mechanism, as shown in fig. 16, the bottom of the first sleeve 231 is fixed on the lifting mechanism 235, the bottom of the lifting mechanism 235 may be fixed inside the base 21, the electric driving part may be disposed inside the base 21, or fixed at the bottom of the lifting mechanism 235, and the position thereof may be flexibly set. The control end of the lifting mechanism 235 is connected to the power output of the electric drive. When power is output, the lifting mechanism 235 is driven to move upwards, so that the first sleeve 231 is driven to move upwards until the stop 233 of the first sleeve 231 is fastened and fixed with the buckle of the second sleeve 232, and if the lifting mechanism 235 still moves upwards, the second sleeve 232 continues to be driven to move upwards until the height requirement of a user is met. Through the multistage sleeve that sets up, can improve the height that the display risees greatly.

Fig. 17 is a schematic structural view of a lifting mechanism according to an embodiment of the present invention. In this embodiment, the lifting mechanism is a scissor lift mechanism that includes a support platform 2351 and a plurality of layers of legs 2352, with the number of layers set according to the range of elevatable. The electric drive portion includes motor assembly 2353, which includes a speed reducer, a transmission mechanism, etc., the motor assembly 2353 is connected with a lead screw 2354, a fixing block is arranged on the lead screw 2354, one end of a connecting rod 2355 is connected on the support leg 2352, and the other end is connected on the fixing block of the lead screw 2354. When the motor works, it drives the lead screw 2354 to rotate, and along with the rotation of the lead screw 2354, the fixed block on the lead screw 2354 is driven to move leftwards or rightwards, and meanwhile, the fixed block on the lead screw 2354 drives the connecting rod 2355, and the connecting rod 2355 drives the support leg 2352, so that the support platform 2351 is lifted and lowered. In order to control the motor, the electric motor control device may further include a motor control circuit, which may be disposed on a circuit board and fixed at a suitable position inside the bracket, for example, on the motor assembly, and the button for controlling the forward rotation and the reverse rotation of the motor may be mounted at a position convenient for a user, such as the base. For example, forward rotation of the motor represents rising, and reverse rotation represents falling. In order to achieve accurate positioning of the highest and lowest points, a position sensor may also be included, and the motor stops after the display is raised at the highest position.

In another embodiment of the invention, the foldable keyboard tray 3 is connected to the display tray 2 by means of an intermediate piece. Referring to fig. 18, fig. 18 is a schematic view of the connection of a keyboard tray and a coupling block according to an embodiment of the present invention. In this embodiment, two or more vertical slideways 251 are arranged inside the coupling block 25. The intermediate member comprises a web 71 and at least two skid beams 72. In this embodiment, the connecting plate 71 is pivotally connected to the first folding portion 31a of the foldable keyboard tray 3 a; one end of the sliding beam 72 is connected to the connecting plate 71, the other end of the sliding beam is matched with the slide way 251 in the connecting block 25, and the corresponding positions at the two ends of the slide way 251 are provided with limiting structures (not shown in the figure), so that the sliding beam 72 matched with the slide way is locked when the keyboard bracket is extended for use and retracted, and the keyboard bracket is fixed. When the connecting plate 71 is pulled downwards or the keyboard tray 3a connected with the connecting plate 71 is pulled, the sliding beam 72 is unlocked firstly by adopting a structure such as a reset block, the sliding beam 72 slides downwards in the slideway 251, and after the keyboard tray 3a reaches a preset position, the limiting structure in the slideway 251 locks the sliding beam 72; when the keyboard tray 3a needs to be retracted, the sliding beam 72 is unlocked, and then the connecting plate 71 is pushed upwards or the keyboard tray 3a connected with the connecting plate 71 is pushed upwards, so that the sliding beam 72 slides upwards in the slide 251, and the keyboard tray 3a can be retracted to the back of the display 1.

The keyboard tray 3a comprises a plurality of folded portions, see fig. 18, a first folded portion 31a pivotally connected to a link 71 and a second folded portion 32a pivotally connected to the first folded portion 31 a. In this embodiment, two folding portions are included, and each folding portion is a stretchable structure. Each folded portion includes a strip-shaped first metal plate 311 and a second metal plate 312. The second metal plate 312 is provided with a slide way 314, one end of a diagonal slide bar 313 is rotatably fixed at both ends of the first metal plate 311, and the other end can slide back and forth in the slide way 314 of the second metal plate 312. The both ends of slide are the restriction position, through setting up the position of restriction position, can control the maximum distance between two adjacent metal sheets. One folding portion may include two or more metal plates, and adjacent metal plates are connected and stretched by a slide bar. A positioning block/hole 315 is disposed on the first metal plate 311 of the first folding portion, and a positioning hole/block is disposed at a corresponding position on the bottom frame of the display, so as to position the keyboard tray after the keyboard tray is opened, thereby improving the stability of the keyboard tray. A stop strip 33a is further arranged on the metal plate at the outermost edge of the second folding part 32a, and is used for shielding the keyboard after the keyboard is placed on the bracket and preventing the keyboard from falling off. Fig. 19 is a partial side view of the display unit when the keyboard tray according to the embodiment of the present invention is opened. When the keyboard tray 3a is pulled down to the current predetermined position, the limiting structure in the slide 251 locks the slide beam 72, and the keyboard tray 3a does not move downward any more. The folds are turned to the front of the display 1 and the distance between the two metal plates of each fold is adjusted according to the desired width. The keyboard tray 3a is lifted upwards, so that the positioning block on the first metal plate 311 is embedded into the positioning hole at the corresponding position on the frame at the bottom of the display, and the keyboard tray 3a is fixed. After the keyboard tray 3a is adjusted, the keyboard 8 is placed on the keyboard tray, and a user can conveniently use the keyboard 8 when the display is lifted off the desktop.

Fig. 20 is a schematic structural view of a keyboard tray according to another embodiment of the present invention, in this embodiment, the plurality of folding portions are metal plates, and a pivotal connection is used between two adjacent metal plates, and a 180-degree fixable hinge 34 may be used to fix two adjacent metal plates in a state of being opened 180 degrees when they are kept open. Referring to fig. 21, the hinge between the first metal plate and the second metal plate is mounted on the back of the bracket, the hinge between the second metal plate and the third metal plate is mounted on the front of the bracket, and so on, so that the keyboard bracket 3a can be maintained in the horizontal state shown in fig. 21 when all the metal plates are opened.

In application, the display unit can be placed on a common office desktop, and a data line and a power line of the display can be led out through a connecting block or a display base on the back surface and are respectively connected to a mains supply and a host. When a user sits on the chair for working, the height of the display and the distance and the direction between the display screen and the user can be adjusted within a small range by pulling the display bracket, and the pitching angle and the direction of the display can be adjusted by pulling the display. When the user wants to work while standing temporarily due to sedentary sitting, the height of the display can be adjusted to a height suitable for the user to work while standing. If the display bracket is in a hand-type lifting mode, the display is lifted by pulling the display upwards, and if the display bracket is in an electric lifting mode, a motor in the display bracket works by pressing a lifting button, and a lifting mechanism is driven to lift to a height suitable for a user to stand for work. After reaching the appropriate height, the folded keyboard tray is flipped over from the back of the display and the keyboard is placed on the keyboard tray. The user can then work while standing. The display unit provided by the invention can flexibly adjust the angle and the orientation of the display, has a larger height adjustment range, can adapt to standing postures and sitting postures of users with different heights, is simple and convenient to operate, and the keyboard bracket can synchronously lift along with the lifting of the display, thereby being convenient for the users to use.

The drawings provided by the present invention are only schematic structural diagrams, and are not drawn according to processing dimensions and proportions, so the sizes of the components and the relationships with other components should not be limited by the displays in the drawings, and the technical scheme of the present invention is understood by the description of the specification and the common technical knowledge in the field. Also, the above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the scope of the present invention, for example, although the display bracket is fixed with the connection plate at the back of the display in the embodiments, the connection plate can be located at the lower part and side of the display. Although the foldable keyboard tray is fixed on the lower frame of the display in the embodiment, the foldable keyboard tray can also be arranged on the side frame and is placed in front of the display through an adapter structure. Accordingly, all equivalents of the foregoing and those not described are intended to fall within the scope of the present disclosure.

Claims

1. A liftable display unit, comprising:

a display;

a base;

the telescopic bracket is configured to be connected with the base at the bottom end and connected with the display at the top end; and

the foldable keyboard bracket comprises two or more folding parts, adjacent folding parts are connected through a pivot, and the first folding part is connected with the display.

2. The display unit of claim 1, wherein the first fold is connected to a bottom bezel of the display by a pivot.

3. The display unit of claim 2, further comprising one or more support plates comprising a fixed end and a multi-linked bendable structure adjacent to the fixed end; after the keyboard bracket is unfolded, the supporting plate is arranged below the keyboard bracket to increase the supporting strength.

4. The display unit of claim 3, wherein one end of the tray is pivotally connected to the bottom bezel of the display to which the first folder is fixed; or

The back of the display is provided with a corresponding supporting plate placing part and a corresponding supporting plate supporting part; the supporting plate is inserted into the supporting plate placing part when not in use, the supporting plate supporting part is drawn out when in use, and the fixed end of the supporting plate is inserted into the slot in the supporting plate supporting part.

5. A display unit according to claim 1, wherein the back of the display comprises a coupling block connected with the top end of the telescopic bracket; the first folding part of the foldable keyboard bracket is connected with the connecting block through an intermediate connecting piece; the bottom frame of the display is provided with a positioning hole/block, and the first folding part comprises a positioning block/hole corresponding to the positioning hole/block.

6. The display unit of claim 5, wherein two or more vertical slideways are arranged inside the coupling block;

the intermediate connection member includes:

a connecting plate configured to be connected to the first folding portion by a pivot; and

and the at least two sliding beams are configured to have one ends connected to the connecting plate and the other ends matched with the slide ways in the connecting block.

7. The display unit of claim 1, wherein the one or more folds are of a telescoping construction; and the outermost edge of the keyboard bracket is provided with a blocking strip higher than the folding part.

8. The display unit of claim 7, wherein the stretchable structure comprises at least:

9. The display unit according to claim 1, wherein the telescopic bracket comprises a plurality of stages of telescopic sleeves which are nested, an electric driving part and a lifting mechanism are arranged in the telescopic sleeve, a power output part of the electric driving part is connected with a lifting control end of the lifting mechanism, and a lifting end of the lifting mechanism is fixedly connected with the bottom of the innermost sleeve.

10. The display unit of claim 9, further comprising:

an upper end swivel connection configured to connect between the display and a top of an innermost sleeve; and

the lower end rotary connecting part is configured and connected between the base and the outermost sleeve.