CN219692787U

CN219692787U - Display screen bracket

Info

Publication number: CN219692787U
Application number: CN202321776012.4U
Authority: CN
Inventors: 白新凤; 徐梅先
Original assignee: Hebei Children's Hospital Hebei Fifth People's Hospital And Hebei Institute Of Pediatrics
Current assignee: Hebei Children's Hospital Hebei Fifth People's Hospital And Hebei Institute Of Pediatrics
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2023-09-15
Anticipated expiration: 2033-07-07

Abstract

The utility model provides a display screen bracket, which belongs to the technical field of display screens and comprises a lifting table and a mounting seat; the upper end of the lifting table is provided with a supporting seat; the mounting seat comprises a mounting plate, a lower clamping piece and an upper clamping piece, wherein the bottom of the mounting plate is rotationally connected to one side of the supporting seat, the lower clamping piece is positioned at the lower part of the mounting plate, and the upper clamping piece is arranged on the mounting plate in a sliding manner along the longitudinal direction of the mounting plate; the upper clamping piece and the lower clamping piece are arranged at intervals and are respectively clamped at the upper end and the lower end of the display screen. The display screen bracket provided by the utility model has the advantages that the upper clamping piece is arranged on the mounting plate in a sliding way, the distance between the upper clamping piece and the lower clamping piece is adjustable, the display screen bracket is used for accommodating display screens which are placed in and are suitable for display screens with different sizes, and the problem that the existing bracket cannot be suitable for display screens with different sizes is solved.

Description

Display screen bracket

Technical Field

The utility model belongs to the technical field of display screens, and particularly relates to a display screen bracket.

Background

The electronic display screen is a display screen which utilizes different materials to manufacture LED pixel points with different colors so as to display various information such as characters, graphics, images, animation, quotations, videos, video signals and the like, the application popularity of the electronic display screen in a medical field is very high, the electronic display screen in a hospital is generally used for playing official information of the hospital and inquiry information, and also has the function of playing some videos related to medical knowledge in a waiting area, in recent years, along with the development of LED technology, the wider the application range of the electronic display screen in the hospital, the more fixed design is adopted for the traditional display screen in the hospital, the position after installation cannot be adjusted, the height of the display screen cannot be adjusted according to the situation of the field, the inconvenience is caused, and because the display screen is mostly installed at a high place, the stability in the lifting process is very important, the phenomenon that the display screen deviates or falls in the lifting process is avoided, meanwhile, the existing bracket cannot be adjusted according to the size of the display screen, and the application range is reduced.

Disclosure of Invention

The utility model aims to provide a display screen bracket, which aims to solve the problem that the existing bracket cannot be adjusted according to the size of a display screen.

In order to achieve the above purpose, the utility model adopts the following technical scheme: there is provided a display screen stand comprising:

the upper end of the lifting table is provided with a supporting seat;

the mounting seat comprises a mounting plate, a lower clamping piece and an upper clamping piece, wherein the bottom of the mounting plate is rotationally connected to one side of the supporting seat, the lower clamping piece is positioned at the lower part of the mounting plate, and the upper clamping piece is arranged on the mounting plate in a sliding manner along the longitudinal direction of the mounting plate; the upper clamping piece and the lower clamping piece are arranged at intervals and are respectively clamped at the upper end and the lower end of the display screen.

As another embodiment of the present utility model, two mounting ear plates are provided at one end of the support base for connecting with the mounting plate, the two mounting ear plates are symmetrically provided at two sides of the support base, and the upper end surface of the mounting ear plate is higher than the upper end surface of the support base; the mounting plates are hinged to the two mounting ear plates by means of a hinge shaft.

As another embodiment of the present utility model, an angle adjusting assembly is further disposed between the two mounting ear plates, and the angle adjusting assembly includes a driving shaft, a driving gear and a driven gear, where the driving shaft is located below the hinge shaft; the driving gear is sleeved on the outer side of the driving shaft and rotates synchronously with the driving shaft; the driven gear is sleeved on the outer side of the hinge shaft and rotates synchronously with the hinge shaft; the driven gear is meshed with the driving gear.

In another embodiment of the present utility model, a yielding groove is formed in the middle of the lower end of the mounting plate, and the driven gear is located in the yielding groove.

As another embodiment of the utility model, the lower clamping piece and the upper clamping piece both comprise a limit box and an extension clamping plate; the limit box is connected with the mounting plate, and a containing cavity is formed in the limit box; the extension clamping plate comprises an extension rod, a baffle, a limiting plate and a return spring which are vertically arranged, and the extension rod penetrates through the limiting box; the middle part of the extension rod is connected with the limiting plate, and the limiting plate is positioned in the accommodating cavity; the reset spring is connected between the limiting plate and the front side plate of the limiting box; the baffle is arranged at the front end of the extension rod.

As another embodiment of the utility model, the back side wall of the baffle plate and the front side wall of the limit box are both provided with backing plates.

As another embodiment of the utility model, a chute is arranged in the middle of the mounting plate, and the upper clamping piece is arranged in the chute in a sliding way; the upper end of the upper clamping piece is connected with a positioning assembly; the positioning assembly comprises a positioning box, two positioning arms and two adjusting arms; the positioning box is fixed on the upper end face of the upper clamping piece; the two positioning arms penetrate through the left side plate and the right side plate of the positioning box respectively and are used for propping against the side wall of the chute; the two adjusting arms penetrate through the front side plate and the rear side plate of the positioning box respectively, the end parts of the adjusting arms are hinged with two extension arms, and the free ends of the two extension arms are hinged with the end parts of the two positioning arms respectively; the ends of the two adjusting arms are respectively provided with a magnetic attraction piece, and the two magnetic attraction pieces are mutually attracted.

As another embodiment of the utility model, the lifting platform further comprises a base and a telescopic bracket; the upper end of the telescopic bracket is connected to the supporting seat by virtue of two hinge points which are arranged at intervals; the lower end of the telescopic bracket is arranged on the base by virtue of two sliding blocks; the sliding blocks are close to or far away from each other along the length direction of the base so as to drive the telescopic bracket to stretch out and draw back.

As another embodiment of the utility model, the base is also provided with a power rod and a threaded rod; the threaded rod comprises two symmetrically arranged threaded parts, and the threaded directions of the two threaded parts are opposite; the two sliding blocks are respectively connected with the two threaded parts; the middle part of the threaded rod is provided with a linkage gear; the power rod is sleeved with a power gear, and the power gear is meshed with the linkage gear and used for driving the linkage gear to rotate.

In another embodiment of the utility model, a driving box is arranged at one side of the base, the end part of the power rod penetrates through the base and stretches into the driving box, and a rotating assembly is connected to one end of the power rod positioned in the driving box; the rotating assembly comprises a rotating gear and a longitudinal toothed plate; the rotating gear is sleeved at the end part of the power rod and rotates synchronously with the power rod; the longitudinal toothed plate is connected with the side wall of the driving box in a sliding manner and meshed with the rotating gear, and one side of the longitudinal toothed plate, which is far away from the rotating gear, is connected with a pedal plate by virtue of a connecting rod.

The display screen bracket provided by the utility model has the beneficial effects that: compared with the prior art, the display screen bracket provided by the utility model has the advantages that the upper clamping piece is arranged on the mounting plate in a sliding way, the distance between the upper clamping piece and the lower clamping piece is adjustable, the display screen bracket is used for accommodating display screens with different sizes, and the problem that the existing bracket cannot be suitable for display screens with different sizes is solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a display screen bracket according to an embodiment of the present utility model;

FIG. 2 is a front view of a mounting base provided in an embodiment of the present utility model;

FIG. 3 is a schematic structural diagram of a positioning assembly according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a base according to an embodiment of the present utility model;

fig. 5 is an enlarged view of a driving box according to an embodiment of the present utility model.

In the figure: 1. a base; 2. a telescopic bracket; 3. a support base; 4. installing an ear plate; 5. a drive shaft; 6. a drive gear; 7. a hinge shaft; 8. a driven gear; 9. a limit box; 10. an extension rod; 11. a limiting plate; 12. a return spring; 13. a baffle; 14. a sidewall support; 15. a chute; 16. a positioning box; 17. a hand crank; 18. a bottom support; 19. a slide bar; 20. top limit; 21. a positioning arm; 22. an adjusting arm; 23. an extension arm; 24. a magnetic attraction piece; 25. a threaded rod; 26. a sliding block; 27. a power lever; 28. a power gear; 29. a linkage gear; 30. a drive box; 31. resetting the connecting plate; 32. a reset torsion spring; 33. rotating the gear; 34. a longitudinal toothed plate; 35. a foot pedal.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. 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.

Referring to fig. 1 to 5, a display screen bracket provided by the present utility model will now be described. The display screen bracket comprises a lifting table and a mounting seat; the upper end of the lifting platform is provided with a supporting seat 3; the mounting seat comprises a mounting plate, a lower clamping piece and an upper clamping piece, wherein the bottom of the mounting plate is rotationally connected to one side of the supporting seat 3, the lower clamping piece is positioned at the lower part of the mounting plate, and the upper clamping piece is arranged on the mounting plate in a sliding manner along the longitudinal direction of the mounting plate; the upper clamping piece and the lower clamping piece are arranged at intervals and are respectively clamped at the upper end and the lower end of the display screen.

Compared with the prior art, the display screen bracket provided by the utility model has the advantages that the upper end of the lifting table is provided with the supporting seat 3, and the supporting seat 3 is rotationally connected with the mounting seat; the mount pad includes mounting panel and upper and lower fastener, and wherein the mounting panel rotates as the installation backplate of display screen to be connected in one side of supporting seat 3, and the mounting panel rotates around the pin joint, can realize adjusting the contained angle size between mounting panel and the supporting seat 3. The mounting plate is provided with a lower clamping piece and an upper clamping piece, the lower clamping piece is fixed on the mounting plate and extends out of the front side wall of the mounting plate, and the lower clamping piece is used for supporting the lower end of the display screen; the upper clamping piece slides along the longitudinal direction of the mounting plate, and the distance between the upper clamping piece and the lower clamping piece is adjusted by sliding up and down so as to accommodate the display screen to be placed in, and the display screens with different sizes are adapted.

The display screen bracket provided by the utility model has the advantages that the upper clamping piece is arranged on the mounting plate in a sliding way, the distance between the upper clamping piece and the lower clamping piece is adjustable, the display screen bracket is used for accommodating display screens which are placed in and are suitable for display screens with different sizes, and the problem that the existing bracket cannot be suitable for display screens with different sizes is solved.

In some possible embodiments, referring to fig. 1 and 2, two mounting ear plates 4 are disposed at one end of the support base 3 for connecting with the mounting plate, the two mounting ear plates 4 are symmetrically disposed at two sides of the support base 3, and an upper end surface of the mounting ear plate 4 is higher than an upper end surface of the support base 3; the mounting plates are hinged to the two mounting lugs 4 by means of a hinge shaft 7.

The installation otic placode 4 is located the one side of supporting seat 3, and installation otic placode 4 has two, and two installation otic placodes 4 are located the left and right sides of supporting seat 3 respectively, and two installation otic placodes 4 extend the outside of the body of supporting seat 3. The lower end face of the installation lug plate 4 is flush with the lower end face of the supporting seat 3, and the upper end face of the installation lug plate 4 is higher than the upper end face of the supporting seat 3. The mounting plate is positioned between the two mounting ear plates 4, the lower end of the mounting plate is penetrated by a hinge shaft 7, and the hinge shaft 7 is fixedly connected with the mounting plate and synchronously rotates; the two ends of the hinge shaft 7 are rotatably connected to the two mounting lugs 4, respectively.

Specifically, an angle adjusting assembly is further arranged between the two mounting ear plates 4, the angle adjusting assembly comprises a driving shaft 5, a driving gear 6 and a driven gear 8, and the driving shaft 5 is positioned below the hinge shaft 7; the driving gear 6 is sleeved on the outer side of the driving shaft 5 and rotates synchronously with the driving shaft 5; the driven gear 8 is sleeved on the outer side of the hinge shaft 7 and rotates synchronously with the hinge shaft 7; the driven gear 8 is meshed with the drive gear 6.

The driving shaft 5 penetrates through the two mounting lug plates 4, the driving shaft 5 is positioned below the hinge shaft 7 and the mounting plate, the driving shaft 5 is sleeved with a driving gear 6, and the driving gear 6 is meshed with a driven gear 8 on the hinge shaft 7; when the driving shaft 5 rotates, the driving gear 6 drives the driven gear 8 and the hinge shaft 7 to rotate.

The driving shaft 5 is rotatably connected with the mounting lug plate 4, and the end part of the driving shaft 5 extending out of the mounting lug plate 4 is connected with a hand crank 17 or an electric motor.

Taking a crank 17 as an example, the crank 17 is manually rotated, and the crank 17 drives the driving shaft 5 to rotate in the forward direction or the reverse direction so as to drive the hinge shaft 7 to rotate; when the hinge shaft 7 rotates, the mounting plate and the hinge shaft 7 synchronously rotate and realize the adjustment of an included angle.

Optionally, a yielding groove is formed in the middle of the lower end of the mounting plate, and the driven gear 8 is located in the yielding groove. The hinge shaft 7 penetrates through the abdication groove and is connected with the mounting plate, and the driven gear 8 is positioned in the abdication groove and sleeved on the hinge shaft 7.

The driven gear 8 is fixedly connected with the hinge shaft 7 and rotates synchronously.

In some possible embodiments, referring to fig. 1, the lower clip member and the upper clip member each include a limit box 9 and an extension clip plate; the limit box 9 is connected with the mounting plate, and a containing cavity is formed in the limit box 9; the extension clamping plate comprises an extension rod 10, a baffle 13, a limiting plate 11 and a return spring 12 which are vertically arranged, wherein the extension rod 10 penetrates through the limiting box 9; the middle part of the extension rod 10 is connected with a limiting plate 11, and the limiting plate 11 is positioned in the accommodating cavity; a reset spring 12 is connected between the limiting plate 11 and the front side plate of the limiting box 9; the baffle 13 is provided at the front end of the extension rod 10.

The lower clamping piece and the upper clamping piece are identical in structure. The limit box 9 is connected to the mounting plate, and the limit box 9 of the lower clamping piece is fixed to the lower portion of the mounting plate, and the upper clamping piece is slidably arranged on the mounting plate and located above the lower clamping piece. The limit box 9 is a hollow box body, and the extension clamping piece is connected with the limit box 9 and comprises an extension rod 10, a baffle 13, a limit plate 11 and a reset spring 12; the extension rod 10 runs through the limit box 9, and the extension rod 10 is perpendicular to the front end face of the mounting plate. The middle part of extension rod 10 is connected with limiting plate 11, and limiting plate 11 supports reset spring 12 on the preceding lateral wall of holding the chamber. Under the action of external force, the reset spring 12 drives the extension rod 10 to move backwards, and the baffle 13 at the end part of the extension rod 10 abuts the display screen on the mounting plate.

The upper clamping piece and the lower clamping piece are consistent in structure and are oppositely arranged. The baffle 13 of the lower clamping piece faces upwards, and the baffle 13 of the upper clamping piece faces downwards.

The back side wall of the baffle 13 and the front side wall of the limit box 9 are respectively provided with a base plate, and the base plates have elasticity. The rear side wall of the baffle 13 is used for contacting the display screen, and the front side wall of the limit box 9 is used for contacting the display screen; a backing plate is therefore provided on both the rear side wall of the baffle 13 and the front side wall of the limit box 9.

The backing plate can be a silica gel plate. The end face of the backing plate is provided with saw-tooth-shaped bulges.

In some possible embodiments, referring to fig. 2 and 3, a chute 15 is formed in the middle of the mounting plate, and the upper clamping member is slidably disposed in the chute 15; the upper end of the upper clamping piece is connected with a positioning component; the positioning assembly comprises a positioning box 16, two positioning arms 21 and two adjusting arms 22; the positioning box 16 is fixed on the upper end surface of the upper clamping piece; the two positioning arms 21 respectively penetrate through the left side plate and the right side plate of the positioning box 16 and are used for propping against the side wall of the chute 15; the two adjusting arms 22 penetrate through the front side plate and the rear side plate of the positioning box 16 respectively, the end parts of the adjusting arms 22 are hinged with two extension arms 23, and the free ends of the two extension arms 23 are hinged with the end parts of the two positioning arms 21 respectively; the ends of the two adjusting arms 22 are provided with magnetic attraction pieces 24, and the two magnetic attraction pieces 24 are attracted to each other.

Optionally, the mounting plate includes a bottom support 18 and two side arm supports and a top stop 20. The two side arm supports are arranged at the upper end of the bottom support 18 at intervals, an accommodating space is arranged between the two side arm supports 14, and the sliding grooves 15 are formed on the opposite sides of the two side arm supports 14. A top limit 20 is mounted on the upper ends of the two side wall supports 14 for enhancing the stability of the mounting plate.

The length direction of the chute 15 arranged in the middle of the mounting plate is longitudinal; the upper clamping piece is connected with the sliding groove 15 in a sliding way. The two sides of the limit box 9 of the upper clamping piece are provided with slide bars 19, the end parts of the slide bars 19 extend into the slide grooves 15 and are attached to the bottoms of the slide grooves 15, and the end parts of the slide bars 19 and the slide grooves 15 can slide relatively.

A positioning box 16 is arranged at the upper end of the limit box 9 of the upper clamping piece. The left and right sides of the positioning box 16 are respectively provided with a positioning arm 21, and the positioning arms 21 are used for abutting against the two sliding grooves 15 on the mounting plate. The positioning arm 21 abuts against the sliding groove 15 on the mounting plate to prevent the upper clamping piece from sliding downwards.

The positioning box 16 is also provided with adjusting arms 22 on the front and rear sides, the first ends of the adjusting arms 22 extend out of the positioning box 16, and the second ends of the adjusting arms 22 are positioned inside the positioning box 16. The second end of the adjusting arm 22 is hinged with two extension arms 23, and the two extension arms 23 are hinged at the end of the positioning arm 21 extending into the positioning box 16.

A magnetic attraction member 24 is also provided at a second end of the adjustment arm 22. The magnetic attraction pieces 24 at the end parts of the two adjusting arms 22 are attracted to each other and are used for driving the two extension rods 10 on the same adjusting arm 22 to be in a straightened state, so that the upper clamping piece is prevented from loosening due to the backward retraction of the positioning arm 21.

Alternatively, the magnetic attraction member 24 is a magnet.

A manual portion is connected to the first end of the adjustment arm 22, and is used for manually pulling the adjustment arm 22 to move horizontally.

In some possible embodiments, referring to fig. 1 and 4, the lifting platform further comprises a base 1 and a telescopic bracket 2; the upper end of the telescopic bracket 2 is connected to the supporting seat 3 by two hinge points which are arranged at intervals; the lower end of the telescopic bracket 2 is arranged on the base 1 by means of two sliding blocks 26; the sliding blocks 26 are moved closer to or farther from each other along the length direction of the base 1 to drive the telescopic bracket 2 to be telescopic.

The base 1 is used for being placed on the ground; a telescopic bracket 2 is arranged between the base 1 and the supporting seat 3; the telescopic support 2 comprises a plurality of articulated rods. The upper end of the telescopic bracket 2 is connected to the supporting seat 3 by two hinge points which are arranged at intervals; the lower end of the telescopic bracket 2 also has two bearing points, and the two bearing points are respectively fixed on two sliding blocks 26. The two sliding blocks 26 are arranged at intervals along the length direction of the base 1, and the two sliding blocks 26 relatively or reversely move along the length direction of the base 1 so as to drive the telescopic bracket 2 to extend or shorten.

When the two sliding blocks 26 move oppositely, the telescopic support 2 stretches to drive the supporting seat 3 to move upwards so as to realize the ascending of the display screen. When the two sliding blocks 26 move reversely, the telescopic support 2 retracts to drive the supporting seat 3 to move downwards so as to lower the display screen.

Specifically, the base 1 is also provided with a power rod 27 and a threaded rod 25; the threaded rod 25 comprises two symmetrically arranged threaded portions, and the threaded directions of the two threaded portions are opposite; the two sliding blocks 26 are respectively connected to the two screw thread parts; the middle part of the threaded rod 25 is provided with a linkage gear 29; the power rod 27 is sleeved with a power gear 28, and the power gear 28 is meshed with the linkage gear 29 to drive the linkage gear 29 to rotate.

The base 1 comprises two threaded rods 25 and two telescopic brackets 2, and the threaded rods 25 and the telescopic brackets 2 are in one-to-one correspondence. The two threaded rods 25 are spaced apart and symmetrically disposed along the power rod 27. Two thread parts are symmetrically arranged on the same threaded rod 25, and the thread directions of the two thread parts are opposite. Two sliding blocks 26 at the lower end of the same telescopic bracket 2 are respectively positioned on two threaded parts of the same threaded rod 25. When the threaded rod 25 rotates, the two sliding blocks 26 move simultaneously in opposite directions or in opposite directions.

A power rod 27 is located in the middle of the base 1, the power rod 27 being located between the two threaded rods 25. The middle part of the power rod 27 is provided with a power gear 28, and the power gear 28 rotates synchronously with the power rod 27. The middle part of the threaded rod 25 is provided with a smooth part, the linkage gear 29 is sleeved on the smooth part, and the linkage gear 29 and the threaded rod 25 synchronously rotate. The power gear 28 is engaged with the link gear 29 for driving the link gear 29 and the threaded rod 25 to rotate.

Further, as shown in fig. 5, a driving box 30 is arranged at one side of the base 1, the end part of the power rod 27 penetrates through the base 1 and stretches into the driving box 30, and a rotating assembly is connected to one end of the power rod 27 located in the driving box 30; the rotating assembly comprises a rotating gear 33, a longitudinal toothed plate 34 and a reset torsion spring 32; the rotating gear 33 is sleeved at the end part of the power rod 27 and rotates synchronously with the power rod 27; the longitudinal toothed plate 34 is connected with the side wall of the driving box 30 in a sliding way and meshed with the rotating gear 33, and one side of the longitudinal toothed plate 34 away from the rotating gear 33 is connected with a pedal 35 by a connecting rod; the return torsion spring 32 connects the power lever 27 and the drive case 30.

A driving box 30 is arranged in the middle of one side of the base 1, and a power rod 27 penetrates through the base 1 and extends into the driving box 30. The end of the power rod 27 is connected with a reset connecting plate 31, the reset connecting plate 31 rotates synchronously with the power rod 27, and a reset torsion spring 32 is connected to the reset connecting plate 31.

A rotating gear 33 is connected to the end of the power rod 27, and the rotating gear 33 rotates under the action of a longitudinal toothed plate 34, and during the rotation, the power rod 27 rotates synchronously therewith.

Alternatively, the longitudinal toothed plate 34 is kept stationary under the action of the resistance force by the longitudinal toothed plate 34 and the driving box 30 without the action of external force, and the driving of the power rod 27 is achieved by lifting and lowering the pedal 35.

When the foot pedal 35 is at a certain position, a bayonet lock connected with the base 1 can be added on one side of the foot pedal 35, and the bayonet lock horizontally slides on the foot pedal 35. The bayonet lock looks adaptation with the draw-in groove of seting up on the lateral wall of base 1.

Optionally, the outer diameter of the turning gear 33 is smaller than the outer diameter of the power gear 28.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. Display screen support, its characterized in that includes:

the upper end of the lifting table is provided with a supporting seat (3);

the mounting seat comprises a mounting plate, a lower clamping piece and an upper clamping piece, wherein the bottom of the mounting plate is rotationally connected to one side of the supporting seat (3), the lower clamping piece is positioned at the lower part of the mounting plate, and the upper clamping piece is arranged on the mounting plate in a sliding manner along the longitudinal direction of the mounting plate; the upper clamping piece and the lower clamping piece are arranged at intervals and are respectively clamped at the upper end and the lower end of the display screen.

2. The display screen bracket according to claim 1, wherein one end of the supporting seat (3) for connecting the mounting plate is provided with two mounting ear plates (4), the two mounting ear plates (4) are symmetrically arranged at two sides of the supporting seat (3), and the upper end surface of the mounting ear plates (4) is higher than the upper end surface of the supporting seat (3); the mounting plates are hinged to the two mounting lugs (4) by means of a hinge shaft (7).

3. A display screen bracket as claimed in claim 2, characterized in that an angle adjustment assembly is further provided between the two mounting lugs (4), the angle adjustment assembly comprising a drive shaft (5), a drive gear (6) and a driven gear (8), the drive shaft (5) being located below the hinge shaft (7); the driving gear (6) is sleeved on the outer side of the driving shaft (5) and synchronously rotates with the driving shaft (5); the driven gear (8) is sleeved on the outer side of the hinge shaft (7) and rotates synchronously with the hinge shaft (7); the driven gear (8) is meshed with the driving gear (6).

4. A display screen bracket as claimed in claim 3, wherein a relief groove is provided in the middle of the lower end of the mounting plate, and the driven gear (8) is located in the relief groove.

5. The display screen bracket of claim 1, wherein the lower clamping piece and the upper clamping piece comprise a limit box (9) and an extension clamping plate; the limiting box (9) is connected with the mounting plate, and a containing cavity is formed in the limiting box (9); the extension clamping plate comprises an extension rod (10), a baffle (13), a limiting plate (11) and a return spring (12) which are vertically arranged, and the extension rod (10) penetrates through the limiting box (9); the middle part of the extension rod (10) is connected with the limiting plate (11), and the limiting plate (11) is positioned in the accommodating cavity; the reset spring (12) is connected between the limiting plate (11) and the front side plate of the limiting box (9); the baffle (13) is arranged at the front end of the extension rod (10).

6. A display screen bracket as claimed in claim 5, characterised in that the rear side wall of the baffle (13) and the front side wall of the limit box (9) are provided with backing plates.

7. The display screen bracket according to claim 5, wherein a chute (15) is formed in the middle of the mounting plate, and the upper clamping piece is slidably arranged in the chute (15); the upper end of the upper clamping piece is connected with a positioning assembly; the positioning assembly comprises a positioning box (16), two positioning arms (21) and two adjusting arms (22); the positioning box (16) is fixed on the upper end face of the upper clamping piece; the two positioning arms (21) penetrate through the left side plate and the right side plate of the positioning box (16) respectively and are used for propping against the side wall of the chute (15); the two adjusting arms (22) penetrate through the front side plate and the rear side plate of the positioning box (16) respectively, the end parts of the adjusting arms (22) are hinged with two extension arms (23), and the free ends of the two extension arms (23) are hinged with the end parts of the two positioning arms (21) respectively; the ends of the two adjusting arms (22) are respectively provided with a magnetic attraction piece (24), and the two magnetic attraction pieces (24) are mutually attracted.

8. A display screen stand according to claim 1, characterized in that the lifting platform further comprises a base (1) and a telescopic stand (2); the upper end of the telescopic bracket (2) is connected to the supporting seat (3) by virtue of two hinge points which are arranged at intervals; the lower end of the telescopic bracket (2) is arranged on the base (1) by means of two sliding blocks (26); the sliding blocks (26) are close to or far away from each other along the length direction of the base (1) so as to drive the telescopic bracket (2) to stretch.

9. The display screen bracket according to claim 8, wherein the base (1) is further provided with a power rod (27) and a threaded rod (25); the threaded rod (25) comprises two symmetrically arranged threaded parts, and the threaded directions of the two threaded parts are opposite; the two sliding blocks (26) are respectively connected with the two threaded parts; the middle part of the threaded rod (25) is provided with a linkage gear (29); the power rod (27) is sleeved with a power gear (28), and the power gear (28) is meshed with the linkage gear (29) and used for driving the linkage gear (29) to rotate.

10. A display screen bracket according to claim 9, wherein a driving box (30) is arranged on one side of the base (1), the end part of the power rod (27) penetrates through the base (1) and stretches into the driving box (30), and a rotating assembly is connected to one end of the power rod (27) positioned in the driving box (30); the rotating assembly comprises a rotating gear (33) and a longitudinal toothed plate (34); the rotating gear (33) is sleeved at the end part of the power rod (27) and rotates synchronously with the power rod (27); the longitudinal toothed plate (34) is slidably connected with the side wall of the driving box (30) and meshed with the rotating gear (33), and one side, far away from the rotating gear (33), of the longitudinal toothed plate (34) is connected with a pedal plate (35) through a connecting rod.