CN220324105U - Display device - Google Patents

Abstract

The application provides a display device, which comprises a shell, a display screen, a lifting device, an electric driving device and a hand driving device, wherein the display screen, the lifting device, the electric driving device and the hand driving device are arranged in the shell; the shell is provided with an opening, and the display screen is arranged in the shell through the opening; the lifting device comprises a transmission part and a lifting part which are in transmission connection with each other, the lifting part is connected with the display screen, and the transmission part is used for driving the lifting part to move along the height direction of the shell so as to enable the display screen to extend or retract from the opening; the output end of the electric driving device is connected with the transmission part and is used for driving the transmission part to rotate so as to drive the lifting part to move along the height direction of the shell; along the direction perpendicular to the display screen display surface, the input end of the hand driving device stretches out of the machine shell, and the output end of the hand driving device is connected with the transmission part in a linkage manner and is used for driving the transmission part to rotate to drive the lifting part to move along the height direction of the machine shell when the electric driving device does not work. The problem that the normal work of the liquid crystal screen is influenced by the fact that the existing hidden liquid crystal screen is easy to be abnormal or fault through electrical control is solved.

Description

Display device

Technical Field

The present disclosure relates to the field of display devices, and in particular, to a display device.

Background

In our daily life, the liquid crystal display is widely applied to display terminals in the fields of multimedia paperless conference systems, command and dispatch systems, financial analysis systems, training centers, information transmission and the like. Because the liquid crystal screen is not required in the application process, the hidden liquid crystal screen is more and more popular, and the current hidden liquid crystal screen is controlled electrically, so that abnormal or fault electrical control is easily caused by frequent lifting of the liquid crystal screen, and the normal operation of the liquid crystal screen is affected.

Disclosure of Invention

The embodiment of the application provides a display device, which solves the problem that the conventional hidden liquid crystal screen is easy to be abnormal or fault through electric control, thereby influencing the normal operation of the liquid crystal screen.

The utility model is realized in that the display device comprises a shell, a display screen, a lifting device, an electric driving device and a hand driving device, wherein the display screen, the lifting device, the electric driving device and the hand driving device are arranged in the shell, and the shell is provided with an opening; the display screen is arranged in the shell from the opening; the lifting device comprises a transmission part and a lifting part which are in transmission connection with each other, the lifting part is connected with the display screen, and the transmission part is used for driving the lifting part to move along the height direction of the shell so as to enable the display screen to extend out of the shell from the opening or retract the shell; the output end of the electric driving device is connected with the transmission part and is used for driving the transmission part to rotate so as to drive the lifting part to move along the height direction of the shell; along the direction perpendicular to the display surface of the display screen, the input end of the hand driving device extends out of the casing, and the output end of the hand driving device is connected with the transmission part in a linkage manner and is used for driving the transmission part to rotate under the condition that the electric driving device is in an unoperated state so as to drive the lifting part to move along the height direction of the casing.

In one embodiment, the transmission part comprises a screw rod extending along the height direction of the casing; the lifting part comprises a lifting sliding block and a supporting piece connected to the lifting sliding block, the lifting sliding block is in threaded connection with the screw rod, and the display screen is arranged on the supporting piece.

In one embodiment, the electric driving device comprises a motor and a coupling, wherein a driving shaft of the motor and the screw rod are coaxially arranged, and the coupling is respectively connected with the driving shaft of the motor and one end of the screw rod far away from the opening.

In one embodiment, the screw rod comprises an extension section extending towards the motor, the outer surface of the extension section is a smooth surface, and the shaft coupling is respectively connected with a driving shaft of the motor and one end of the extension section far away from the opening;

the hand driving device comprises a first bevel gear, a second bevel gear, a manual rotating shaft and a hand wheel, wherein the first bevel gear penetrates through the extension section, the second bevel gear is meshed with the first bevel gear, one end of the manual rotating shaft is connected with the second bevel gear, the other end of the manual rotating shaft is connected with the hand wheel through a sleeve, and the hand wheel is located outside the casing.

In one embodiment, the display device further includes a sliding mechanism, the sliding mechanism is disposed in the casing, the sliding mechanism includes two guide rail slider groups, and the two guide rail slider groups are respectively disposed at two sides of the screw rod;

the guide rail sliding block set comprises a sliding rail and a sliding block arranged on the sliding rail in a sliding mode, the sliding direction of the sliding block is the same as the axial direction of the screw rod, and the bearing piece is connected with the sliding block.

In one embodiment, the two guide rail slide block sets are symmetrically arranged with the screw rod as a central axis.

In one embodiment, the transmission part further comprises a first bearing seat and a second bearing seat, the screw rod is connected between the first bearing seat and the second bearing seat, and the first bearing seat is close to the opening;

one end of the sliding rail, which is close to the opening, protrudes out of the first bearing seat or is flush with one side, close to the opening, of the first bearing seat;

one end of the sliding rail far away from the opening protrudes out of the second bearing seat or is flush with one side of the second bearing seat far away from the opening.

In one embodiment, the front projection of the screw on the display screen is positioned in the middle of the display screen.

In one embodiment, a first sensor is arranged on the surface of one side, far away from the opening, of the first bearing seat, and the first sensor is used for sensing the lifting sliding block when the display screen is completely extended out of the casing;

and a second sensor is arranged on the surface of one side of the second bearing close to the opening, and the second sensor is used for sensing the lifting sliding block when the display screen is completely arranged in the shell.

In one embodiment, the opening is provided with a cover plate, the cover plate is rotationally connected with the casing, and the cover plate can circumferentially rotate along the connecting end of the cover plate and the casing.

The beneficial effect of the display device that this application provided lies in: compared with the prior art, the lifting device is arranged in the shell, and the display screen can be placed in the shell or extend out of the shell for use, so that the display screen is protected, and meanwhile, the space utilization rate is improved; through the cooperation setting of the electric driving device and the hand driving device, the display screen is selectively used according to the user requirement, for example, the electric driving device or the hand driving device is selected to lift and adjust the display screen in the power-on state, and the hand driving device is used to lift and adjust the display screen in the power-off state, so that the normal use of the display screen is not influenced under any condition; the input end of the hand driving device extends out of the casing along the direction vertical to the display surface of the display screen, so that the whole width of the display device can not be increased, and the operation is more convenient.

Drawings

Fig. 1 is a schematic view of a display screen of a display device according to an embodiment of the present application;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a front view of a display screen of a display device according to an embodiment of the present application in a retracted state;

fig. 4 is a schematic view of a display screen of a display device according to an embodiment of the present application;

fig. 5 is a front view of a display screen of the display device according to the embodiment of the present application in an extended state.

Reference numerals: 1. a housing; 10. an opening; 2. a display screen;

3. a lifting device; 31. a first bearing seat; 32. a second bearing seat; 33. a screw rod; 330. an extension section; 34. a lifting slide block; 35. a support;

4. an electric drive device; 41. a motor; 42. a coupling;

5. a hand driving device; 51. a first bevel gear; 52. a second bevel gear; 53. a manual spindle; 54. a hand wheel; 55. a sleeve;

60. a guide rail slide block group; 61. a slide rail; 62. a slide block;

7. and a cover plate.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

It should be further noted that, in the embodiments of the present application, the same reference numerals denote the same components or the same parts, and for the same parts in the embodiments of the present application, reference numerals may be given to only one of the parts or the parts in the drawings by way of example, and it should be understood that, for other same parts or parts, the reference numerals are equally applicable.

The embodiment of the application provides a display device, which solves the problem that the conventional hidden liquid crystal screen is easy to be abnormal or fault through electric control, thereby influencing the normal operation of the liquid crystal screen.

Referring to fig. 1 and 4, the display device provided in the embodiment of the present application includes a casing 1, and a display screen 2, a lifting device 3, an electric driving device 4, and a hand driving device 5 disposed in the casing 1.

Wherein, the shell 1 is provided with an opening 10, and the display screen 2 is arranged in the shell 1 through the opening 10; the lifting device 3 comprises a transmission part and a lifting part which are in transmission connection with each other, the lifting part is connected with the display screen 2, and the transmission part is used for driving the lifting part to move along the height direction X of the casing 1 so as to enable the display screen 2 to extend out of the casing 1 from the opening 10 or retract into the casing 1; the output end of the electric driving device 4 is connected with the transmission part and is used for driving the transmission part to rotate so as to drive the lifting part to move along the height direction X of the shell 1; along the direction perpendicular to the display surface of the display screen 2, the input end of the hand driving device 5 extends out of the casing 1, and the output end of the hand driving device 5 is connected with the transmission part in a linkage manner and is used for driving the transmission part to rotate so as to drive the lifting part to move along the height direction X of the casing 1 under the condition that the electric driving device 4 is in an unoperated state.

In this embodiment of the present application, when the casing 1 is installed, the opening 10 is facing upwards, the height direction X of the casing 1 is the direction from the opening 10 of the casing 1 to the inside of the casing 1, that is, the vertical direction, and the display screen 2 is lifted in the height direction X of the casing 1, that is, the vertical direction, so that the use habit of the user is more met, and the use is more convenient for the user. The display screen 2 can extend out of the machine shell 1 from the opening 10 or retract into the machine shell 1 from the opening 10 through the lifting device 3, so that the display screen 2 can extend out of the machine shell 1 through the lifting device 3 when the display screen 2 is needed, the display screen 2 can be received into the machine shell 1 when not in use, excessive desktop space can not be occupied, and the machine shell 1 can also protect the display screen 2.

In addition, the lifting part of the lifting device 3 drives the display screen 2 to lift and can be driven by electricity or by hands, and can be used alternatively according to the needs of a user, specifically, under the condition of normal power supply, the electric driving device 4 or the hand driving device 5 can be adopted to drive the transmission part to rotate so as to drive the lifting part to move along the height direction X of the shell 1, thereby driving the display screen 2 to lift, and when power failure or the electric driving device 4 fails, the hand driving device 5 can be used to drive the transmission part to rotate so as to drive the lifting part to move along the height direction X of the shell 1, thereby driving the display screen 2 to lift and lower, so that the display screen 2 can be lifted and lowered under any condition, and the application needs of the user on the display screen 2 are met.

It should be noted that, the input end of the hand driving device 5 in the embodiment of the application extends out of the housing 1 along the direction perpendicular to the display surface of the display screen 2, which is equivalent to that the input end of the hand driving device 5 extends out of the housing 1 on the side surface of the housing 1 facing the user, and compared with that the input end of the hand driving device 5 extends out of the housing 1 from the side surface of the housing 1, the setting of the application does not increase the overall width of the display device, and the operation is more convenient.

Specifically, since the display screen 2 passes through the opening 10 of the casing 1 when extending out of the casing 1 or retracting into the casing 1, the opening 10 needs to be careful when setting to enable the display screen 2 to pass through, so that the situation that the edges of the opening 10 of the display screen 2 and the casing 1 are scratched when the display screen 2 extends out of the casing 1 or retracts into the casing 1 is avoided. The housing 1 needs to ensure that the space inside the housing 1 can fully accommodate the display screen 2 when set up, so that the display screen 2 can be fully retracted inside the housing 1.

When the display screen 2 is completely placed in the casing 1, the upper end surface of the display screen 2 may be flush with the opening 10, so that the upper end surface of the display screen 2 serves as a closing cover plate of the opening 10.

Referring to fig. 3, the upper end surface of the display screen 2 may be lower than the opening 10, a cover plate 7 may be disposed at the opening 10, the cover plate 7 is rotatably connected with the casing 1, and the cover plate 7 may rotate along the connection end of the cover plate 7 and the casing 1, so that when the display screen 2 rises, the cover plate 7 may be opened first, so that the display screen 2 extends out of the casing 1, and after the display screen 2 is located in the casing 1, the cover plate 7 is closed to close the opening 10. In which, fig. 3 is a schematic view of the display screen 2 in the casing 1, and fig. 5 is a schematic view of the display screen 2 extending out of the casing 1.

In some embodiments, referring to fig. 2, the transmission part includes a screw 33 extending in the height direction X of the casing 1; the lifting part comprises a lifting slide block 34 and a supporting piece 35 connected to the lifting slide block 34, the lifting slide block 34 is in threaded connection with the screw rod 33, and the display screen 2 is arranged on the supporting piece 35.

Specifically, when the screw 33 rotates, the lifting slider 34 screwed on the screw 33 moves in the axial direction of the screw 33, that is, in the height direction X of the casing 1, and the supporting member 35 also moves in the height direction X of the casing 1, and since the display screen 2 disposed on the supporting member 35 lifts and lowers together with the supporting member 35, the display screen 2 moves in the height direction X of the casing 1, thereby lifting and lowering. The rotary motion is converted into the linear motion through the screw rod 33 to realize the lifting of the display screen 2, so that the structure is simple, the occupied space is small when the display screen is installed in the casing 1, and the volume of the casing 1 is not increased additionally.

In some embodiments, referring to fig. 1 and 4, the transmission part further includes a first bearing housing 31 and a second bearing housing 32, and a screw 33 is connected between the first bearing housing 31 and the second bearing housing 32, the first bearing housing 31 being adjacent to the opening 10. The first bearing seat 31 and the second bearing seat 32 are arranged on the inner wall of the casing 1, the screw rod 33 is connected between the first bearing seat 31 and the second bearing seat 32, the normal rotation function of the screw rod 33 can be met, the distance between the first bearing seat 31 and the second bearing seat 32 is the moving travel range of the lifting slide block 34, the lifting slide block 34 can be blocked by the first bearing seat 31 when lifted towards the direction of the opening 10, the lifting slide block 34 can be blocked by the second bearing seat 32 when lifted downwards away from the opening 10, and therefore the limiting effect on the lifting slide block 34 can be achieved, and the lifting device 3 is prevented from being damaged due to the fact that the lifting slide block 34 continues to move when lifted to the highest position.

It should be noted that, the supporting member 35 may be a tray, specifically may be a tray with a strip-shaped groove, where the length of the strip-shaped groove is greater than or equal to that of the display screen 2, and the side edge of the display screen 2 is placed in the strip-shaped groove during installation, so that the display screen 2 can be firmly and stably installed on the supporting member 35, which is favorable for preventing the display screen 2 from shaking during lifting, and smoothly extends out of the casing 1 from the opening 10 or retracts into the casing 1 from the opening 10.

In the embodiment of the application, the lifting slide block 34 is lifted to drive the display screen 2 to lift, so the lifting slide block 34 needs to bear the weight of the display screen 2, and for the display screen 2 to be more stable in the lifting process, the weight borne by the lifting slide block 34 can be distributed uniformly.

In some embodiments, referring to fig. 3, the orthographic projection of the lead screw 33 on the display screen 2 is located in the middle of the display screen 2.

Specifically, the connection modes among the display screen 2, the supporting member 35 and the lifting sliding block 34 may be: the display screen 2 is arranged at the middle position of the bar-shaped groove of the supporting piece 35, and then the middle position of the supporting piece 35 is connected with the lifting sliding block 34, so that the lifting sliding block 34 can uniformly bear the weight of the display screen 2 and the supporting piece 35, and the display screen 2 does not shake in the lifting process and is more stable.

The connection modes among the display screen 2, the supporting member 35 and the lifting sliding block 34 can be as follows: the supporting piece 35 is connected with the lifting slide block 34, but the position of the supporting piece 35 connected with the lifting slide block 34 is not limited, the display screen 2 is installed on the supporting piece 35, and the requirement that the orthographic projection of the screw rod 33 on the display screen 2 is positioned in the middle of the display screen 2 needs to be met at the moment, so that the weight of the display screen 2 can be ensured to be uniformly applied to the lifting slide block 34, and the stable lifting of the display screen 2 is facilitated.

In some embodiments, referring to fig. 2, the electric drive device 4 comprises a motor 41, the drive shaft of which is arranged coaxially with the screw 33, and a coupling 42, the coupling 42 connecting the drive shaft of the motor 41 and the end of the screw 33 remote from the opening 10, respectively.

It should be noted that, the electric driving device 4 is disposed on a side of the screw 33 away from the opening 10, and connects the driving shaft of the motor 41 and one end of the screw 33 away from the opening 10 through the coupling 42, so that the driving shaft of the motor 41 rotates to drive the screw 33 to rotate, so that the lifting slider 34 moves in the height direction X of the casing 1 to drive the display screen 2 to lift in the height direction X of the casing 1. The electric driving device 4 has a simple overall structure, and the screw rod 33 is directly driven to rotate in the height direction X of the casing 1, so that the driving force for driving the screw rod 33 to rotate is not weakened, and the electric driving device 4 is installed in the casing 1 without increasing the overall width of the casing 1 and affecting the space between a plurality of display devices during installation.

The motor 41 is a stepping motor or a servo motor, and the accurate control of the motor 41 can be realized through the stepping motor or the servo motor, so that the operation and use precision of the electric driving device 4 is improved.

In some embodiments, referring to fig. 2, the screw 33 includes an extension 330 extending toward the motor 41, the outer surface of the extension 330 is smooth, and the coupling 42 is respectively connected to the driving shaft of the motor 41 and an end of the extension 330 away from the opening 10; the hand driving device 5 comprises a first bevel gear 51, a second bevel gear 52, a manual rotating shaft 53 and a hand wheel 54, wherein the first bevel gear 51 penetrates through the extension section 330, the second bevel gear 52 is meshed with the first bevel gear 51, one end of the manual rotating shaft 53 is connected with the second bevel gear 52, the other end of the manual rotating shaft 53 is connected with the hand wheel 54 through a sleeve 55, and the hand wheel 54 is located outside the casing 1.

Specifically, the principle process of driving the screw rod 33 to rotate by the hand driving device 5 to drive the display screen 2 to lift is as follows: when the power is cut off or the motor 41 fails to run, the power supply of the motor 41 is disconnected, the hand wheel 54 is connected with the manual rotating shaft 53 through the sleeve 55, at the moment, the manual rotating of the hand wheel 54 can enable the manual rotating shaft 53 to rotate, so that the second bevel gear 52 is driven to rotate, the first bevel gear 51 is meshed with the second bevel gear 52, the first bevel gear 51 also rotates, and the first bevel gear 51 penetrates through the extending section 330 of the screw rod 33, so that the screw rod 33 rotates along with the first bevel gear 51 and drives the lifting sliding block 34 to move in the height direction X of the machine shell 1, and lifting of the display screen 2 is achieved. When the electric driving device 4 does not work, the screw rod 33 can be driven to rotate through the hand driving device 5 so as to realize the lifting of the display screen 2, so that the display device can be normally used under any condition, the lifting of the display screen 2 can not be influenced, and the practicability of the display device is improved.

It should be noted that, the sleeve 55 of the present application may be set as an inner hexagonal bayonet, and the hand wheel 54 is provided with a hexagonal rotating shaft matched with the inner hexagonal bayonet, so that the hand wheel 54 is removed for further placement after the manual operation is completed by matching the hexagonal rotating shaft on the hand wheel 54 with the inner hexagonal bayonet, so as to realize manual rotation of the hand rotating shaft 53, and further realize manual rotation of the screw 33 by matching the first bevel gear 51 and the second bevel gear 52 which are meshed with each other.

In some embodiments, referring to fig. 3, the display device further includes a sliding mechanism disposed in the casing 1, the sliding mechanism including two guide rail slider groups 60, the two guide rail slider groups 60 being disposed on two sides of the screw 33, respectively; the guide rail slide block set 60 includes a slide rail 61 and a slide block 62 slidably disposed on the slide rail 61, the sliding direction of the slide block 62 is the same as the axial direction of the screw 33, and the support member 35 is connected with the slide block 62. When the lifting slide block 34 moves in the height direction X of the casing 1, the slide block 62 also synchronously moves on the slide rail 61 along the height direction X of the casing 1, so that the weight of the supporting piece 35 connected to the lifting slide block 34 and the slide block 62 and the weight of the display screen 2 are borne by the lifting slide block 34 and the two slide blocks 62, the consistency of lifting forces on the left side and the right side of the display screen 2 is ensured, the display screen 2 is lifted horizontally, and the situation that the display screen 2 is lifted in an inclined state and touches the casing 1 is avoided.

Specifically, the sliding block 62 and the lifting sliding block 34 may be welded with the supporting member 35, and of course, the sliding block 62 and the lifting sliding block 34 may also be connected with the supporting member 35 by bolts, and threaded holes opposite to each other may be formed in the supporting member 35, the sliding block 62 and the lifting sliding block 34, so that the supporting member 35 may be directly screwed into the threaded holes to connect with the sliding block 62 and the lifting sliding block 34.

It should be noted that, the sliding mechanism adopts the guide rail and slide block set 60 to simplify the structure of the sliding mechanism, so that the installation is convenient, and the sliding of the slide block 62 in the guide rail can ensure that the moving direction of the slide block 62 is not deflected, so that the structure is more stable, and the bearing member 35 connected to the slide block 62 can stably move along the height direction X of the casing 1, so that the lifting of the display screen 2 is more stable and shaking is avoided.

In some embodiments, referring to fig. 3, two guide rail slider groups 60 are symmetrically disposed about the lead screw 33. In this way, the lifting slide block 34 and the two slide blocks 62 can uniformly bear the weight of the supporting piece 35 and the display screen 2, and the lifting force on the left side and the right side of the display screen 2 is consistent, so that the lifting of the display screen 2 is more stable.

It should be noted that, to keep the two sliders 62 moving synchronously with the lifting slider 34, it is necessary to satisfy that the slidable travel of the sliders 62 is greater than or equal to the movable travel of the lifting slider 34, so as to ensure that the sliders 62 can move synchronously with the movement of the lifting slider 34, and the phenomenon that the normal movement of the lifting slider 34 is hindered due to the small movable travel of the sliders 62 does not occur.

The slide 62 and the lifting slide 34 can be moved synchronously depending on the setting positions of the slide rail 61 and the screw 33. In some embodiments, the positions of the slide rail 61 and the screw 33 may be set as follows: one end of the sliding rail 61 close to the opening 10 protrudes from the first bearing seat 31, and one end of the sliding rail 61 far away from the opening 10 protrudes from the second bearing seat 32.

The slide rail 61 and the screw 33 may be arranged in the following manner: one end of the sliding rail 61 close to the opening 10 is flush with one side of the first bearing seat 31 close to the opening 10, and one end of the sliding rail 61 away from the opening 10 protrudes from the second bearing seat 32.

The position setting manner of the slide rail 61 and the screw 33 may be: one end of the sliding rail 61 close to the opening 10 protrudes out of the first bearing seat 31, and one end of the sliding rail 61 far away from the opening 10 is flush with one side of the second bearing seat 32 far away from the opening 10.

The position setting manner of the slide rail 61 and the screw 33 may be: one end of the sliding rail 61 close to the opening 10 is flush with one side of the first bearing seat 31 close to the opening 10; the end of the sliding rail 61 remote from the opening 10 is flush with the side of the second bearing 32 remote from the opening 10.

Since the screw rod 33 is disposed between the first bearing seat 31 and the second bearing seat 32, the movable stroke of the lifting slider 34 is the distance between the first bearing seat 31 and the second bearing seat 32, and by the arrangement of the sliding rail 61, the slidable stroke of the slider 62 is larger than or equal to the movable stroke of the lifting slider 34, so that when the lifting slider 34 moves to any position between the first bearing seat 31 and the second bearing seat 32, the two sliders 62 can both keep synchronous movement, and the lifting of the display screen 2 is more stable.

In some embodiments, the screw 33 is positioned to ensure that the display 2 is fully extended out of the housing 1 when the lifting slider 34 is raised to the highest point and that the display 2 is fully retracted into the housing 1 when the lifting slider 34 is lowered to the lowest point. Of course, in order not to increase the volume of the casing 1, the length of the screw 33 is not required to be excessively long as the above requirements can be satisfied.

In some embodiments, a first sensor is disposed on a surface of the first bearing seat 31 away from the opening 10, and the first sensor is used for sensing the lifting slider 34 when the display screen 2 is completely extended out of the casing 1; a second sensor is provided on a surface of the second bearing housing 32 adjacent to the opening 10, and the second sensor is used for sensing the lifting slider 34 when the display screen 2 is completely placed in the casing 1.

By the arrangement of the first sensor, when the lifting slide block 34 is in contact with the first bearing seat 31, that is, the lifting slide block 34 moves to the highest point, the display screen 2 completely extends out of the machine shell 1, and an induction signal is transmitted to the electric driving device 4 so as to stop the motor 41 of the electric driving device 4, so that the lifting slide block 34 stops moving, and the display screen 2 is stationary for a user; by the arrangement of the second sensor, when the lifting slide 34 contacts with the second bearing 32, that is, the lifting slide 34 moves to the lowest point, the display screen 2 is completely retracted into the casing 1, and the sensing signal is transmitted to the electric driving device 4, so that the motor 41 of the electric driving device 4 stops rotating, and the lifting slide 34 stops moving, and the display screen 2 is retracted into the casing 1 and is stationary, so that the desktop space is not occupied.

Since the lifting slider 34 is contacted with the first bearing seat 31 when rising to the highest point and blocked by the first bearing seat 31, and likewise, the lifting slider 34 is contacted with the second bearing seat 32 when falling to the lowest point and blocked by the second bearing seat 32, when the screw rod 33 is driven to rotate by the hand driving device 5 to drive the lifting slider 34 to move, if the user senses that the lifting slider 34 is blocked when operating the hand wheel 54, the display screen 2 is completely extended out of the casing 1 or completely retracted into the casing 1, at this time, the hand wheel 54 can be stopped, so that the lifting slider 34 stops moving.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A display device, comprising:

a housing (1) having an opening (10);

a display screen (2) arranged in the casing (1) from the opening (10);

the lifting device (3) is arranged in the shell (1), the lifting device (3) comprises a transmission part and a lifting part which are in transmission connection with each other, the lifting part is connected with the display screen (2), and the transmission part is used for driving the lifting part to move along the height direction (X) of the shell (1) so as to enable the display screen (2) to extend out of the shell (1) from the opening (10) or retract the shell (1);

the electric driving device (4) is arranged in the shell (1), and the output end of the electric driving device (4) is connected with the transmission part and is used for driving the transmission part to rotate so as to drive the lifting part to move along the height direction (X) of the shell (1);

the hand driving device (5) is arranged in the shell (1), along the direction perpendicular to the display surface of the display screen (2), the input end of the hand driving device (5) extends out of the shell (1), and the output end of the hand driving device (5) is connected with the transmission part in a linkage manner, and is used for driving the transmission part to rotate under the condition that the electric driving device (4) is in an unoperated state so as to drive the lifting part to move along the height direction (X) of the shell (1).

2. The display device of claim 1, wherein the display device comprises a display device,

the transmission part comprises a screw rod (33) extending along the height direction (X) of the shell (1);

the lifting part comprises a lifting slide block (34) and a supporting piece (35) connected to the lifting slide block (34), the lifting slide block (34) is in threaded connection with the screw rod (33), and the display screen (2) is arranged on the supporting piece (35).

3. The display device of claim 2, wherein the display device comprises a display device,

the electric driving device (4) comprises a motor (41) and a coupler (42), wherein a driving shaft of the motor (41) and the screw rod (33) are coaxially arranged, and the coupler (42) is respectively connected with the driving shaft of the motor (41) and one end of the screw rod (33) away from the opening (10).

4. A display device according to claim 3, wherein,

the screw rod (33) comprises an extension section (330) extending towards the motor (41), the outer surface of the extension section (330) is a smooth surface, and the coupler (42) is respectively connected with a driving shaft of the motor (41) and one end of the extension section (330) far away from the opening (10);

the hand driving device (5) comprises a first bevel gear (51), a second bevel gear (52), a manual rotating shaft (53) and a hand wheel (54), wherein the first bevel gear (51) is arranged on the extending section (330) in a penetrating mode, the second bevel gear (52) is meshed with the first bevel gear (51), one end of the manual rotating shaft (53) is connected with the second bevel gear (52), the other end of the manual rotating shaft is connected with the hand wheel (54) through a sleeve (55), and the hand wheel (54) is located outside the shell (1).

5. The display device according to any one of claims 2 to 4, further comprising:

the sliding mechanism is arranged in the shell (1) and comprises two guide rail slide block groups (60), and the two guide rail slide block groups (60) are respectively arranged at two sides of the screw rod (33);

the guide rail sliding block set (60) comprises a sliding rail (61) and a sliding block (62) arranged on the sliding rail (61) in a sliding mode, the sliding direction of the sliding block (62) is the same as the axial direction of the screw rod (33), and the supporting piece (35) is connected with the sliding block (62).

6. The display device of claim 5, wherein the display device comprises a display device,

the two guide rail slide block groups (60) are symmetrically arranged by taking the screw rod (33) as a central axis.

7. The display device of claim 6, wherein the display device comprises a display device,

the transmission part further comprises a first bearing seat (31) and a second bearing seat (32), the screw rod (33) is connected between the first bearing seat (31) and the second bearing seat (32), and the first bearing seat (31) is close to the opening (10);

one end of the sliding rail (61) close to the opening (10) protrudes out of the first bearing seat (31) or is flush with one side of the first bearing seat (31) close to the opening (10);

one end of the sliding rail (61) far away from the opening (10) protrudes out of the second bearing seat (32) or is flush with one side of the second bearing seat (32) far away from the opening (10).

8. The display device of claim 7, wherein the display device comprises a display device,

the orthographic projection of the screw rod (33) on the display screen (2) is positioned in the middle of the display screen (2).

9. The display device according to claim 7 or 8, wherein,

a first inductor is arranged on the surface of one side, far away from the opening (10), of the first bearing seat (31), and the first inductor is used for inducing the lifting sliding block (34) when the display screen (2) is completely extended out of the shell (1);

a second sensor is arranged on one side surface of the second bearing (32) close to the opening (10), and the second sensor is used for sensing the lifting sliding block (34) when the display screen (2) is completely arranged in the casing (1).

10. The display device according to any one of claims 1-4, 6-8, wherein,

the opening (10) is provided with a cover plate (7), the cover plate (7) is rotationally connected with the casing (1), and the cover plate (7) can circumferentially rotate along the connecting end of the cover plate (7) and the casing (1).