CN112963700B - A liftable display unit - Google Patents

Abstract

The invention relates to a liftable display unit, which comprises a display, a base, a telescopic bracket and a foldable keyboard bracket, wherein the bottom end of the telescopic bracket is connected with the base, and the top end of the telescopic bracket is connected with the display; the foldable keyboard bracket comprises two or more folding parts, wherein a 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 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.

Description

A liftable display unit

technical field

The invention relates to computer equipment, in particular to a liftable display unit.

Background technique

In the computer field, a display is generally 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 height thereof are fixed and cannot be adjusted. When this connection method is adopted, although the installation is simple and fast, the use place and range of the display are limited because the angle of the display is fixed. In other applications, the desktop display is movably connected to the stand. After the display and the stand are installed, the user can rotate the display and adjust its height according to the needs of use, thereby broadening the application scenarios of the display. However, the height adjustment range of this type of display is limited, and the height adjustment range is usually set according to different heights on the premise of the user's sitting posture. As people's cognition of computer office damage to the body is deepened step by step, more and more people tend to be able to stand up occasionally for office work. Therefore, it is particularly important to design a monitor that allows people to switch between sitting and standing positions at will. important.

Contents of the invention

Aiming at the technical problems in the prior art, the present invention proposes a liftable display unit, which can provide a wide range of height adjustments to suit people's use in sitting and standing positions.

In order to solve the above technical problems, the present invention provides a liftable display unit, which includes a display, a base, a telescopic bracket and a foldable keyboard bracket, the bottom of the telescopic bracket is connected to the base, and the top is connected to the The display is connected; the foldable keyboard tray has two or more folding parts, and the adjacent folding parts are connected by a pivot, and the first folding part is connected to the display; wherein, the The first folding part is connected to the bottom frame of the display through a pivot; the display unit also includes one or more supporting plates, and the supporting plates include a fixed end and a multi-section bendable structure adjacent to the fixed end; on the keyboard tray After the frame is unfolded, the supporting board is placed under the keyboard bracket to increase the supporting strength; one end of the supporting board is rotatably connected to the bottom frame of the display that fixes the first folding part; or the corresponding supporting board is placed on the back of the display part and the pallet supporting part; the pallet is inserted into the pallet mounting part when not in use, and the pallet supporting part is pulled out when in use, and the fixed end of the pallet is inserted into the pallet supporting part in the slot of the

Wherein, the back of the display includes a coupling block, which is connected to the top of the telescopic bracket; the first folding part of the foldable keyboard tray is connected to the coupling block through an intermediate connecting piece; the display The bottom frame of the frame is provided with a positioning hole/block, and the first folding part includes a positioning block/hole corresponding to the positioning hole/block; two or more than two vertical slides are arranged inside the coupling block The intermediate connecting piece includes: a connecting plate configured to be connected to the first folding portion through a pivot; and at least two sliding beams configured to have one end connected to the connecting plate and the other end connected to the connecting block Compatible with slideways.

Preferably, two or more of the folding parts are retractable structures; the outermost edge of the keyboard tray is provided with a bar higher than the folding parts.

Preferably, the retractable structure at least includes:

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

The second metal plate is provided with two or more slideways with spacers; and

Two or more slide bars, one end of the slide bar is rotatably fixed on the first metal plate, and the other end is a free end, which is located in a slideway in the second metal plate.

Preferably, the telescopic support includes a multi-stage nested telescopic sleeve, which includes an electric drive part and a lifting mechanism, the power output part of the electric drive part is connected to the lifting control end of the lifting mechanism, and the lifting mechanism The lifting end is fixedly connected with the bottom of the innermost sleeve.

Preferably, the display unit further includes an upper rotating connection part and a lower rotating connecting part, the upper rotating connecting part is connected between the display and the top of the innermost sleeve; the lower rotating connecting part is connected between the bottom and the outermost between the sleeves.

The display unit provided by the present 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 lifting of the display Lifting, convenient for users to use.

Description of drawings

Below, preferred embodiment of the present invention will be described in further detail in conjunction with accompanying drawing, wherein:

FIG. 1 is a schematic diagram of a front perspective structure of a display unit according to an embodiment of the present invention;

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

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

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

FIG. 5 is a schematic structural view of the bottom frame of the display in the display unit according to an embodiment of the present invention;

Fig. 6 is a side structural schematic diagram of a display and a keyboard bracket according to an embodiment of the present invention;

FIG. 7 is a schematic view of the back of the three-dimensional structure of the display unit according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a pallet on the back of a display according to an embodiment of the present invention;

Fig. 9 is a schematic structural view of taking out the supporting board from the back of the display according to an embodiment of the present invention when the flat board moves down;

Fig. 10 is a structural schematic view of the supporting plate supporting the keyboard tray according to an embodiment of the present invention;

Fig. 11 is a schematic structural view of a pallet on the back of a display according to another embodiment of the present invention;

Fig. 12 is a schematic structural diagram of taking out the supporting board from the back of the display according to another embodiment of the present invention when the flat board moves down;

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

Fig. 14 is a schematic diagram of the display height adjustable bracket when adjusting the upper end rotating part according to another embodiment of the present invention;

Fig. 15 is a structural schematic diagram of a multi-stage telescopic sleeve contracted according to an embodiment of the present invention;

Fig. 16 is a schematic structural view of the extension part of the multi-stage telescopic sleeve that can be lifted and lowered electrically according to an embodiment of the present invention;

Fig. 17 is a schematic structural diagram of a lifting mechanism according to an embodiment of the present invention;

Fig. 18 is a schematic diagram of the connection between the keyboard tray and the coupling block according to an embodiment of the present invention;

Fig. 19 is a partial side view of the display unit when the keyboard tray is opened according to an 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 diagram of the front structure of a display unit according to another embodiment of the present invention.

Detailed ways

In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the following detailed description, reference is made to the accompanying drawings which are included in the specification and which illustrate specific embodiments of the application and which are included in this application. In the drawings, like reference numerals describe substantially similar components in different views. Various specific embodiments of the present application are described in sufficient detail below, so that those of ordinary skill in the art can implement the technical solutions of the present application. It should be understood that other embodiments may also be utilized or structural, logical or electrical changes may be made to the embodiments of the present application.

FIG. 1 is a front perspective structural view of a display unit according to an embodiment of the present invention, and FIG. 2 is a rear perspective structural view of a display unit according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 2 , in this embodiment, the display unit includes: a display 1 , a height-adjustable bracket 2 , and a foldable keyboard bracket 3 . Wherein, 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 a display screen of various types and sizes at present. A power interface/wire and a data interface/wire are arranged on the back of the outer frame. In this embodiment, the bottom frame of the display 1 is connected to the foldable keyboard tray 3, and the keyboard tray 3 includes a plurality of folding parts. Referring to FIG. 3, the first folding part 31 is connected to the bottom frame of the display 1 The second folding part 32 is connected to the first folding part 31 through a pivot, and the third folding part 33 is also connected to the second folding part 32 through a pivot. Wherein, the first and second folding parts are strip-shaped metal plates, and the third folding part 33 is composed of a plurality of strip-shaped metal plates 331 and diagonal sliding bars 332 to form a stretchable structure.

The second metal plate 331 is provided with a slideway, and one end of the two slide bars 332 is respectively fixed on two ends of the first metal plate 331 , and the other end can slide back and forth in the slideway of the second metal plate 331 . Both ends of the slideway are limit positions, and by setting the position of the limit positions, the maximum distance between two adjacent metal plates 331 can be controlled. There may be two or more metal plates 331 , as shown in the figure, there are three metal plates 331 . Wherein, there is also a bar 333 on the outermost metal plate 331, which is used to cover the keyboard and prevent the keyboard from falling after the keyboard is placed on the bracket, as shown in FIG. 4 .

When the keyboard tray is put away, the multiple metal plates of the third folding part 33 are folded together, and then each folding part is folded backward to the back of the display. In order to enable the folded bracket to be stably placed 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 means of magnetic attraction.

In order to increase the supporting strength of the keyboard tray, in some embodiments, an additional reinforcing plate is included, placed under it after the multiple folded parts 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 . On the bottom frame 11, two supporting plates 4a are fixed, one end of the supporting plates 4a is a fixed end, which is rotatably connected to the bottom frame 11 of the display, and the other end is a free end. The supporting plate 4 a is made of rigid material, and the width of the supporting plate 4 a is smaller than the thickness of the bottom frame 11 . In some other embodiments, a groove for setting the supporting plate 4 a is provided in the bottom frame 11 . When the pallet 4a is not in use, it is stored in the groove. In order to improve the supporting strength of the keyboard bracket 3, the supporting part of the supporting plate 4a can be a plurality of metal flat plates that can be folded side by side. When not in use, a plurality of parallel metal flat plates can be folded and stored in the groove. When in use, it is taken out from the groove and unfolded. In some other embodiments, the supporting plate 4a may be a telescopic structure to increase the supporting position. In order to make the supporting plate 4a and the back of the keyboard bracket 3 fit better when in use, a soft structure is arranged near the fixed end of the supporting plate 4a. As shown in Figure 6, the supporting plate 4a includes a rigid fixed end 40a, soft A rigid structure 41a, such as a chain structure, and a rigid support portion 42a. By adjusting the soft structure 41a, the support plate 4a and the keyboard bracket 3 can be better bonded together, and the stability and strength of the support can be improved.

7-10 are related structural schematic diagrams of another pallet structure. In this embodiment, the supporting board 4b is fixed on both ends of the back of the display 1 . The back side of display 1 is provided with chute, and its two grooves are inclined to the middle along 5, and the width of the bottom of the groove is greater than the width of the notch, forming a supporting plate placement part. The flat plate 6 is inserted in the pallet placement part as a pallet support part. The lower inner surface of the flat plate 6 is provided with a certain depth of the card groove 61, and the outer surface of the flat plate 6 is provided with an operating portion 62, such as a plurality of strip-shaped protrusions, to increase friction. The supporting plate 4b is inserted in the chute as the supporting plate placement part, and is blocked and fixed by the flat plate 6 . When using the keyboard tray 3, unfold each folded part to form a complete keyboard tray, pull out the supporting plate 4b from the supporting plate placement part, press the operating part 62 and apply force downwards, and slide the flat plate 6 downwards to expose the card slot 61, as shown in Figure 9. Insert one end of the supporting plate 4b into the slot 61, as shown in FIG. 10 . The structure of the support plate 4b is similar to that of the embodiment in FIG. 6 , including a soft structure 41b and a rigid support portion 42b for adapting to different angles between the keyboard tray 3 and the display 1 .

In some other embodiments, as shown in Fig. 11-Fig. 12 . The two grooves extend along the length 5, and the width of the chute is slightly larger than the width of the supporting plate 4b, and the flat plate 6 is built into the bottom of the chute. When in use, the pallet 4b is pulled out from above the chute, and the flat plate 6 is slid out toward the bottom of the chute to expose the slot 61 .

In the present invention, the height-adjustable bracket 2 includes a base 21, a rotating connection part 22 at the lower end, a multi-stage telescopic bracket 23, a rotating connecting part 24 at the upper end, and a coupling block 25, wherein the base 21 provides a stable support for the display unit. At the center of gravity, the rotating connection part 22 at the lower end is connected between the base 21 and the multi-stage telescopic support 23 , and the rotating connection part 24 at the upper end is connected between the multi-stage telescopic support 23 and the coupling block 25 . The connecting block 25 is connected with the back of the display 1 . Of course, the coupling block 25 may also be integrally formed with the rear case on the back of the display 1 . In this embodiment, the display angle of the display 1 can be adjusted conveniently and flexibly through the rotating connection parts 22 and 24 at the upper and lower ends. One adjustment method is: pull the multi-stage telescopic bracket 23 of the bracket 2, which rotates with the lower end rotating connection part 22, so as to realize the adjustment of the pitch angle and orientation of the display, and also adjust the orientation of the display 1 within a small range. Height and distance of the display from the user. As shown in Figure 13, in order to obtain the position after pulling the display unit in Figure 2 backward, it can be seen that not only the height of the display 1 is reduced, but also the distance between the display and the user is increased, and the display unit is changed. orientation. Another adjustment method is: pull the display 1 to tilt 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 rotating connection part 24 at the upper end to rotate, so when other parts of the display bracket 2 are fixed In this case, the display angle can be adjusted only by moving the display 1, which is convenient for users.

The display bracket 2 of the present invention realizes height adjustment through a 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 to the rotating connection part at the upper end. The bottom of the inner sleeve has an outwardly extending stopper 233 (see FIG. 16 ), whose width is larger than the opening of the outer sleeve. Raise the display height by pulling out the sleeve step by step. In one embodiment, lifting is achieved manually, corresponding to the manual lifting mode, a snap-fit structure (not shown) with a reset function is provided inside the opening of each external sleeve (not shown in the figure), and when it is necessary to lift When pulling up the upper end rotating connection part 24 or the display 1, the innermost first sleeve 231 is moved upwards. When the stopper 233 moves to the buckle structure of the second sleeve 232, the stopper 233 and Snap snap fit holds together. When it needs to be retracted, press the reset button 234, the stopper 233 will break away from the buckle, grab the upper end rotating connection part 24 or the display 1 and press down, then the first sleeve 231 will return to the original state.

In some other embodiments, the lifting can also be achieved by electric means, and the corresponding structure includes an electric drive part and a lifting mechanism. As shown in FIG. 16, the bottom of the first sleeve 231 is fixed on the lifting mechanism 235, and the lifting mechanism 235 The bottom can be fixed inside the base 21, and the electric driving part can be arranged inside the base 21, or fixed on the bottom of the lifting mechanism 235, and its position can be flexibly set. The control end of the lifting mechanism 235 is connected with the power output part of the electric drive part. When there is power output, drive the lifting mechanism 235 to move upwards, thereby driving the first sleeve 231 to move upwards until the stopper 233 is snapped together with the snap of the second sleeve 232. If the lifting mechanism 235 is still When moving upward, the second sleeve 232 will continue to be moved upward until the user's height requirement is met. The raised height of the display can be greatly increased through the provided multi-stage sleeve.

Fig. 17 is a structural schematic diagram of a lifting mechanism according to an embodiment of the present invention. In this embodiment, the lifting mechanism adopts a scissor-type lifting mechanism, which includes a support platform 2351 and multi-layer legs 2352, and the number of floors is set according to the range that can be raised. The electric drive part includes a motor assembly 2353, which includes a reducer, a transmission mechanism, etc., the motor assembly 2353 is connected to a lead screw 2354, and a fixed block is arranged on the lead screw 2354. One end of the connecting rod 2355 is connected to the leg 2352, and the other end is connected to the On the fixed block of 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 left or right. The outrigger 2352 is affected to realize the rise and fall of the support platform 2351 . Among them, in order to realize the control of the motor, a motor control circuit can also be included, which can be arranged on a circuit board and fixed at a suitable position inside the bracket, such as on the motor assembly, to control the forward rotation and reverse rotation of the motor. The turn button can be installed on the base and other convenient positions for users to operate. For example, forward rotation of a motor represents an increase, and reverse rotation represents a decrease. For precise positioning of the highest and lowest points, position sensors can also be included to stop the motor after the display has risen to the highest position.

In another embodiment of the present invention, the foldable keyboard bracket 3 is connected to the display bracket 2 through an intermediate piece. Referring to FIG. 18 , FIG. 18 is a schematic diagram of the connection between the keyboard tray and the 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 middle piece includes a connecting plate 71 and at least two sliding beams 72 . In this embodiment, the connecting plate 71 is connected to the first folding part 31a of the foldable keyboard bracket 3a through a pivot; The slideway 251 cooperates, and the corresponding positions at both ends of the slideway 251 are provided with a limit structure (not shown in the figure), and when the keyboard tray is stretched out for use and retracted, the slide beam 72 that is matched with the slideway is locked, thereby Secure the keyboard tray. When the connecting plate 71 is pulled down or the keyboard bracket 3a connected with the connecting plate 71 is pulled, the sliding beam 72 is first unlocked by using a structure such as a reset block, and the sliding beam 72 slides downward in the slideway 251, and the keyboard bracket After the frame 3a reaches the predetermined position, the limit structure in the slideway 251 locks the sliding beam 72; when it is necessary to put away the keyboard tray 3a, first unlock the sliding beam 72, and then push the connecting plate 71 upwards or push the connecting plate 71 is connected to the keyboard bracket 3a, the sliding beam 72 slides upward in the slideway 251, so that the keyboard bracket 3a can be received behind the display 1.

The keyboard tray 3a includes multiple folded parts. Referring to FIG. 18 , the first folded part 31a is connected to the connecting member 71 through a pivot, and the second folded part 32a is connected to the first folded part 31a through a pivot. In this embodiment, there are two folding parts, and each folding part is a stretchable structure. Each folded portion includes a strip-shaped first metal plate 311 and a second metal plate 312 . A slideway 314 is provided on the second metal plate 312, and one end of the diagonal slide bar 313 is rotationally fixed at both ends of the first metal plate 311, and the other end can slide back and forth in the slideway 314 of the second metal plate 312 . Both ends of the slideway are limit positions, and the maximum distance between two adjacent metal plates can be controlled by setting the position of the limit positions. A folding part may include two or more metal plates, and adjacent metal plates are connected and stretched by sliding bars. A positioning block/hole 315 is provided on the first metal plate 311 of the first folding part, and a positioning hole/block is provided at a corresponding position on the bottom border of the display, for positioning the keyboard tray after the keyboard tray is opened, Improves the stability of the keyboard tray. There is also a bar 33a on the outermost metal plate of the second folding portion 32a, which is used to cover the keyboard after the keyboard is placed on the bracket and prevent the keyboard from falling. As shown in FIG. 19 , it is a schematic diagram of a partial side structure of the display unit when the keyboard tray is opened according to an embodiment of the present invention. When the keyboard bracket 3a is pulled downward to reach the current predetermined position, the limit structure in the slideway 251 locks the sliding beam 72, and the keyboard bracket 3a no longer moves downward. Turn the folding part to the front of the display 1, and adjust the distance between the two metal plates of each folding part according to the required width. Lift up the keyboard bracket 3a, make the positioning block on the first metal plate 311 fit into the positioning hole at the corresponding position on the bottom frame of the display, and fix the keyboard bracket 3a. After the keyboard bracket 3a is adjusted, the keyboard 8 is placed on it, which is convenient for the user to use the keyboard 8 when the display is lifted off the desktop.

Fig. 20 is a schematic structural diagram of a keyboard bracket according to another embodiment of the present invention. In this embodiment, the plurality of folding parts are metal plates, and two adjacent metal plates are connected by pivots. In order to make the two Two adjacent metal plates are fixed in the state of opening 180 degrees when maintaining, and a hinge 34 that can be fixed at 180 degrees can be adopted. Referring to Figure 21, the hinge between the first metal plate and the second metal plate is installed on the back of the bracket, the hinge between the second metal plate and the third metal plate is installed on the front of the bracket, and so on. When all the metal plates are opened, the keyboard bracket 3a can be kept in the horizontal state shown in FIG. 21 .

In the application, the display unit can be placed on an ordinary desk, and the data cable and power cable of the display can be drawn out through the connection block on the back or the display base, and connected to the mains and the host computer respectively. When the user sits on a chair to work, the height of the display, the distance between the display screen and the user, and the orientation can be adjusted within a small range by pulling the display bracket, and the pitch angle and orientation of the display can be adjusted by pulling the display. When the user wants to stand temporarily for work due to sedentary, the height of the monitor can be adjusted to the height suitable for the standing work. If the display bracket is a manual lifting method, the display can be raised by pulling the display upward; if it is an electric lifting method, by pressing the up button, the motor in the display bracket will work, driving the lifting mechanism to rise to a height suitable for the user to stand and work . Once the desired height is reached, flip the folding keyboard tray over from the back of the monitor and place the keyboard on the keyboard tray. At this point the user can work while standing. The display unit provided by the present 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 lifting of the display Lifting, convenient for users to use.

The accompanying drawings provided by this utility model are only structural schematic diagrams, and are not drawn according to the processing size and proportion. Therefore, the size of the components and the relationship with other components should not be limited by the display in the accompanying drawings, because the description in the manual and the The technical solution of the present invention is understood by those skilled in the art with common technical knowledge. Moreover, the above-mentioned embodiments are only for the purpose of illustrating the present invention, rather than limiting the present invention. Those of ordinary skill in the relevant technical fields can also make various changes and modifications without departing from the scope of the present invention, for example , although in the embodiment, the display bracket is fixed with the joint plate behind the display, but the joint plate can also be located at the bottom and side of the display. Although the folding keyboard tray in the embodiment is fixed on the lower frame of the display, it can also be located on the side frame and placed in front of the display through a transfer structure. Therefore, all equivalent technical solutions mentioned above and not described shall also belong to the scope of the disclosure of the present invention.

Claims (5)

1. A liftable display unit, comprising:

a display;

a base;

a telescopic bracket, which is configured to have a bottom end connected with the base and a top end connected with the display; 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;

the first folding part is connected with a bottom frame of the display through a pivot; the display unit further comprises one or more supporting plates, wherein each supporting plate comprises a fixed end and a multi-section 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; one end of the supporting plate is rotatably connected to the bottom frame of the display for fixing the first folding part; 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 pulled out when in use, and the fixed end of the supporting plate is inserted into the slot in the supporting plate supporting part; or

Wherein the back of the display comprises a connecting block which is 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; two or more than two vertical slideways are arranged inside the connecting block; the intermediate connection member includes: a connecting plate configured to be connected to the first folding portion by a pivot; and at least two sliding beams, one end of each sliding beam is connected to the connecting plate, and the other end of each sliding beam is matched with the slideway in the connecting block.

2. The display unit of claim 1, wherein the two 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.

3. A display unit according to claim 2, wherein the stretchable structure comprises at least:

a first metal plate connected to the metal plate of the adjacent folder 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.

4. 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.

5. The display unit of claim 4, 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.

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