CN111649195A - Display screen splicing, supporting and adjusting device for screen - Google Patents

Display screen splicing, supporting and adjusting device for screen Download PDF

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Publication number
CN111649195A
CN111649195A CN202010488343.2A CN202010488343A CN111649195A CN 111649195 A CN111649195 A CN 111649195A CN 202010488343 A CN202010488343 A CN 202010488343A CN 111649195 A CN111649195 A CN 111649195A
Authority
CN
China
Prior art keywords
plate
vertical
adjusting mechanism
display screen
horizontal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010488343.2A
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Chinese (zh)
Inventor
张旭鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenyang Yichengzhixun Technology Development Co ltd
Original Assignee
Shenyang Yichengzhixun Technology Development Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenyang Yichengzhixun Technology Development Co ltd filed Critical Shenyang Yichengzhixun Technology Development Co ltd
Priority to CN202010488343.2A priority Critical patent/CN111649195A/en
Publication of CN111649195A publication Critical patent/CN111649195A/en
Priority to CN202110289156.6A priority patent/CN112856146A/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043—Allowing translations
    • F16M11/045—Allowing translations adapted to left-right translation movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043—Allowing translations
    • F16M11/046—Allowing translations adapted to upward-downward translation movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043—Allowing translations
    • F16M11/048—Allowing translations adapted to forward-backward translation movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention relates to a display screen splicing, supporting and adjusting device for a screen, which comprises a fixed plate, a transition plate, a display screen mounting plate, a transverse adjusting mechanism, a vertical adjusting mechanism and a front and back adjusting mechanism, wherein the transition plate is mounted at the front part of the fixed plate; a transverse adjusting mechanism is arranged between the fixed plate and the transition plate, and the transition plate slides along the horizontal direction of the fixed plate under the driving of the transverse adjusting mechanism; the front part of the transition plate is provided with a sliding plate, a vertical adjusting mechanism is arranged between the transition plate and the sliding plate, and the sliding plate slides along the vertical direction of the fixed plate under the driving of the vertical adjusting mechanism. The invention has the advantages that: the splicing and mounting requirements of the market display screen can be met. The adjustment process of the display screen is completely sent by the upper computer, the stepping motor executes driving, the operation process is simple, the control is easy and accurate, and the field wiring is simple.

Description

Display screen splicing, supporting and adjusting device for screen
Technical Field
The invention relates to a display screen splicing, supporting and adjusting device for a screen.
Background
Splicing screen support equipment in the current market only has a front-back telescopic function. After the support stretches out, the screen is hung on the support, and then the position of the display screen in the left-right direction and the up-down direction is manually adjusted. And adjusting the transverse gap and the vertical gap between the display screens. The size of the gap is adjusted completely by experience.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a display screen splicing, supporting and adjusting device for a screen, and the technical scheme of the invention is as follows:
the display screen splicing, supporting and adjusting device for the screen comprises a fixed plate, a transition plate, a display screen mounting plate, a transverse adjusting mechanism, a vertical adjusting mechanism and a front and back adjusting mechanism, wherein the transition plate is mounted at the front part of the fixed plate; a transverse adjusting mechanism is arranged between the fixed plate and the transition plate, and the transition plate slides along the horizontal direction of the fixed plate under the driving of the transverse adjusting mechanism; a sliding plate is arranged at the front part of the transition plate, a vertical adjusting mechanism is arranged between the transition plate and the sliding plate, and the sliding plate slides along the vertical direction of the fixed plate under the driving of the vertical adjusting mechanism; the front part of the sliding plate is provided with a display screen mounting plate, a front and back adjusting mechanism is arranged between the display screen mounting plate and the sliding plate, and the transverse adjusting mechanism, the vertical adjusting mechanism and the front and back adjusting mechanism are controlled by an upper computer.
The front and back adjustment mechanism include fore-and-aft direction step motor, pair level speed reducer, pivot, first drive unit and second drive unit, fore-and-aft direction step motor and pair level speed reducer install the one side at the sliding plate, the pivot support through installing the supporting seat on the sliding plate, this fore-and-aft direction step motor passes through pair level speed reducer drive the pivot, this pivot is arranged along the length direction of sliding plate the pivot on install first drive unit and second drive unit, this first drive unit and second drive unit are parallel to each other and form the interval, the pivot install the one side at first drive unit and second drive unit, the display screen mounting panel install the opposite side at first drive unit and second drive unit.
The first driving unit and the second driving unit are identical in structure and respectively comprise a pin shaft, a first support arm and a second support arm, the first support arm and the second support arm are rotationally connected together through the pin shaft and then arranged in an X shape, one end of the first support arm is fixedly arranged on the rotating shaft, the other end of the first support arm is hinged with the display screen mounting plate, one end of the second support arm is provided with a support arm sliding block, the support arm sliding block is in sliding fit with a support arm guide rail arranged on the sliding plate, and the support arm guide rail is arranged along the vertical direction; the other end of the second support arm is hinged to the display screen mounting plate; and a limit switch is arranged on the transition plate close to one side of the display screen mounting plate.
Horizontal adjustment mechanism include horizontal direction step motor, horizontal ball supporting seat and horizontal shaft coupling, horizontal direction step motor set up along the horizontal direction, install on the fixed plate on install horizontal ball supporting seat, horizontal ball one end pass through the horizontal shaft coupling with horizontal direction step motor transmission connect, the other end pivoted install on horizontal ball supporting seat horizontal ball install horizontal slider, this horizontal slider with the cab apron link together, should cross the cab apron and install the horizontal guide rail sliding fit on the fixed plate.
The vertical adjusting mechanism comprises a vertical direction stepping motor, a vertical ball screw, a vertical sliding block and a vertical ball screw supporting seat, the vertical direction stepping motor is installed on the upper portion of the transition plate, the vertical ball screw supporting seat is installed on the lower half portion of the transition plate, one end of the vertical ball screw is in transmission connection with the vertical direction stepping motor through a coupler, the other end of the vertical ball screw is installed on the vertical ball screw supporting seat in a rotating mode, the vertical ball screw is provided with the vertical sliding block, the vertical sliding block is connected with the sliding plate, and the sliding plate is in sliding fit with a vertical guide rail installed on the transition plate.
The device also comprises a tension spring, wherein one end of the tension spring is arranged on the sliding plate, the other end of the tension spring is connected to the transition plate, and the tension spring is arranged along the vertical direction.
The invention has the advantages that: the splicing and mounting requirements of the market display screen are met. The adjustment process of the display screen is completely sent by an upper computer, each stepping motor executes driving, and the display screen can move in the front-back direction, the up-down direction and the left-right direction, so that the operation process is simple, easy to control and accurate, and the field wiring is simple. The moving speed and the position precision are easy to adjust and control. The splicing gap is greatly reduced, and the whole appearance of the large screen is more perfect.
Drawings
Fig. 1 is a schematic view of the main structure of the present invention.
Fig. 2 is a rear view of fig. 1.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a side view of fig. 1.
Detailed Description
The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
Referring to fig. 1 to 4, the invention relates to a splicing, supporting and adjusting device for a display screen for a screen, which comprises a fixed plate 1, a transition plate 18, a display screen mounting plate 3, a transverse adjusting mechanism, a vertical adjusting mechanism and a front and back adjusting mechanism, wherein the transition plate 18 is mounted at the front part of the fixed plate 1; a transverse adjusting mechanism is arranged between the fixed plate 1 and the transition plate 18, and the transition plate 18 slides along the horizontal direction of the fixed plate 1 under the driving of the transverse adjusting mechanism; a sliding plate 2 is arranged at the front part of the transition plate 18, a vertical adjusting mechanism is arranged between the transition plate 18 and the sliding plate 2, and the sliding plate 2 slides along the vertical direction of the fixed plate 1 under the driving of the vertical adjusting mechanism; the front part of the sliding plate 2 is provided with a display screen mounting plate 3, a front and back adjusting mechanism is arranged between the display screen mounting plate 3 and the sliding plate 2, and the transverse adjusting mechanism, the vertical adjusting mechanism and the front and back adjusting mechanism are controlled by an upper computer.
As shown in fig. 1, the front-back adjusting mechanism includes a front-back direction stepping motor 4, a dual-stage speed reducer 5, a rotating shaft 6, a first driving unit and a second driving unit, the front and back stepping motor 4 and the double-stage speed reducer 5 are arranged on one side of the sliding plate, the rotating shaft 6 is supported by a supporting seat arranged on the sliding plate 2, the front-back direction stepping motor 4 drives the rotating shaft 6 through a double-level speed reducer 5, the rotating shaft 6 is arranged along the length direction of the sliding plate 2, a first driving unit and a second driving unit are arranged on the rotating shaft 6, the first driving unit and the second driving unit are parallel to each other and form a space, the rotating shaft 6 is installed at one side of the first driving unit and the second driving unit, the display screen mounting plate 3 is arranged on the other side of the first driving unit and the second driving unit.
As shown in fig. 1 and 4, the first driving unit and the second driving unit have the same structure, and each of the first driving unit and the second driving unit includes a pin, a first support arm 8 and a second support arm 19, the first support arm 8 and the second support arm 19 are rotatably connected together through the pin and then arranged in an X shape, one end of the first support arm 8 is fixedly installed on the rotating shaft 6, the other end of the first support arm is hinged with the display screen installation plate 3, one end of the second support arm 19 is provided with a support arm sliding block 9, the support arm sliding block 9 is in sliding fit with a support arm guide rail 11 installed on the sliding plate 2, and the support arm guide rail 11 is arranged along the vertical direction; the other end of the second support arm 19 is hinged on the display screen mounting plate 2; a limit switch 10 is arranged on the transition plate close to one side of the display screen mounting plate 2.
As shown in fig. 2, the horizontal adjusting mechanism includes a horizontal stepping motor 12, a horizontal ball screw 13, a horizontal ball screw support seat and a horizontal coupling, the horizontal stepping motor 12 is installed on the fixing plate 1 along the horizontal direction, the horizontal ball screw support seat is installed on the fixing plate 1, one end of the horizontal ball screw 13 is in transmission connection with the horizontal stepping motor through the horizontal coupling, the other end of the horizontal ball screw is installed on the horizontal ball screw support seat in a rotating manner, a horizontal slider is installed on the horizontal ball screw 13, the horizontal slider is connected with the transition plate 18, the transition plate 18 performs reciprocating movement along with the movement of the horizontal slider, and the transition plate 18 is in sliding fit with the horizontal guide rail 7 installed on the fixing plate 1.
As shown in fig. 2, the vertical adjusting mechanism includes a vertical stepping motor 15, a vertical ball screw 16, a vertical slider and a vertical ball screw support, the vertical stepping motor 15 is installed on the upper portion of the transition plate, the vertical ball screw support is installed on the lower half portion of the transition plate 18, one end of the vertical ball screw 16 is in transmission connection with the vertical stepping motor 16 through a coupling, the other end of the vertical ball screw is installed on the vertical ball screw support in a rotating manner, the vertical slider is installed on the vertical ball screw, the vertical slider is connected with the sliding plate 2, the sliding plate 2 is driven to reciprocate through the movement of the vertical slider, and the sliding plate 2 is in sliding fit with a vertical guide rail 17 installed on the transition plate 18.
The display screen further comprises a tension spring 14, one end of the tension spring 14 is installed on the sliding plate 2, the other end of the tension spring is connected to the transition plate 18, and the tension spring 14 is arranged in the vertical direction and used for offsetting the self weight of the display screen and reducing the driving power of the stepping motor in the vertical direction.
The working principle of the invention is as follows:
when the adjustment in the front-back direction is needed:
the user upper computer sends an extending (retracting) instruction through the RS485, the stepping motor in the front-back direction rotates to drive the rotating shaft to rotate, the first supporting arm and the second supporting arm are driven to move relatively at the moment, resultant force pushes the display screen mounting plate, and the display screen is driven to extend or retract.
When the adjustment in the horizontal direction needs to be carried out:
the upper computer of the user sends a left-moving (right-moving) instruction through the RS485 to drive the horizontal ball screw to rotate in the positive direction or the negative direction, and drives the horizontal sliding block to move left or right.
When the adjustment in the vertical direction needs to be carried out:
the upper computer of the user sends an up-moving (down-moving) instruction through the RS485, the vertical stepping motor drives the vertical ball screw to rotate in the positive direction or the negative direction, the vertical sliding block is driven to move up or down, and the vertical sliding block is connected with the sliding plate, so that the sliding plate can move on the transition plate, and the purpose of moving the display screen in the up and down directions is achieved.
The rotation angle of each stepping motor can be accurately controlled by sending an instruction through the upper computer, and the stepping motors are flexibly connected with the ball screws, so that the displacement of the display screen is accurately controlled.

Claims (6)

1. The display screen splicing, supporting and adjusting device for the screen is characterized by comprising a fixed plate, a transition plate, a display screen mounting plate, a transverse adjusting mechanism, a vertical adjusting mechanism and a front and back adjusting mechanism, wherein the transition plate is mounted at the front part of the fixed plate; a transverse adjusting mechanism is arranged between the fixed plate and the transition plate, and the transition plate slides along the horizontal direction of the fixed plate under the driving of the transverse adjusting mechanism; a sliding plate is arranged at the front part of the transition plate, a vertical adjusting mechanism is arranged between the transition plate and the sliding plate, and the sliding plate slides along the vertical direction of the fixed plate under the driving of the vertical adjusting mechanism; the front part of the sliding plate is provided with a display screen mounting plate, a front and back adjusting mechanism is arranged between the display screen mounting plate and the sliding plate, and the transverse adjusting mechanism, the vertical adjusting mechanism and the front and back adjusting mechanism are controlled by an upper computer.
2. The display screen splicing support adjusting device for a screen according to claim 1, the front-back adjusting mechanism comprises a front-back direction stepping motor, a duplex-level speed reducer, a rotating shaft, a first driving unit and a second driving unit, the front and back stepping motor and the duplex speed reducer are arranged on one side of the sliding plate, the rotating shaft is supported by a supporting seat arranged on the sliding plate, the front and back direction stepping motor drives the rotating shaft through a duplex speed reducer, the rotating shaft is arranged along the length direction of the sliding plate, a first driving unit and a second driving unit are arranged on the rotating shaft, the first driving unit and the second driving unit are parallel to each other and form a space, the rotating shaft is arranged at one side of the first driving unit and the second driving unit, the display screen mounting plate is arranged on the other side of the first driving unit and the second driving unit.
3. The display screen splicing, supporting and adjusting device for the screen according to claim 2, wherein the first driving unit and the second driving unit have the same structure and each comprise a pin shaft, a first support arm and a second support arm, the first support arm and the second support arm are rotatably connected together through the pin shaft and then arranged in an X shape, one end of the first support arm is fixedly arranged on the rotating shaft, the other end of the first support arm is hinged with the display screen mounting plate, one end of the second support arm is provided with a support arm sliding block, the support arm sliding block is in sliding fit with a support arm guide rail arranged on the sliding plate, and the support arm guide rail is arranged in the vertical direction; the other end of the second support arm is hinged to the display screen mounting plate; and a limit switch is arranged on the transition plate close to one side of the display screen mounting plate.
4. The splicing, supporting and adjusting device for the display screen of the screen of claim 2 or 3, wherein the transverse adjusting mechanism comprises a horizontal stepping motor, a horizontal ball screw supporting seat and a horizontal coupling, the horizontal stepping motor is arranged along the horizontal direction and is installed on a fixed plate, the horizontal ball screw supporting seat is installed on the fixed plate, one end of the horizontal ball screw is in transmission connection with the horizontal stepping motor through the horizontal coupling, the other end of the horizontal ball screw is rotatably installed on the horizontal ball screw supporting seat, a horizontal sliding block is installed on the horizontal ball screw, the horizontal sliding block is connected with the transition plate, and the transition plate is in sliding fit with a horizontal guide rail installed on the fixed plate.
5. The splicing, supporting and adjusting device for the display screen of the screen of claim 2 or 3, wherein the vertical adjusting mechanism comprises a vertical stepping motor, a vertical ball screw, a vertical slider and a vertical ball screw support, the vertical stepping motor is mounted on the upper portion of the transition plate, the vertical ball screw support is mounted on the lower half portion of the transition plate, one end of the vertical ball screw is in transmission connection with the vertical stepping motor through a coupler, the other end of the vertical ball screw is rotatably mounted on the vertical ball screw support, the vertical slider is mounted on the vertical ball screw, the vertical slider is connected with the sliding plate, and the sliding plate is in sliding fit with a vertical guide rail mounted on the transition plate.
6. The splicing, supporting and adjusting device for the display screen of claim 5, further comprising a tension spring, wherein one end of the tension spring is installed on the sliding plate, and the other end of the tension spring is connected to the transition plate, and the tension spring is arranged in a vertical direction.
CN202010488343.2A 2020-06-02 2020-06-02 Display screen splicing, supporting and adjusting device for screen Withdrawn CN111649195A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010488343.2A CN111649195A (en) 2020-06-02 2020-06-02 Display screen splicing, supporting and adjusting device for screen
CN202110289156.6A CN112856146A (en) 2020-06-02 2021-03-18 Display screen splicing, supporting and adjusting device for screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010488343.2A CN111649195A (en) 2020-06-02 2020-06-02 Display screen splicing, supporting and adjusting device for screen

Publications (1)

Publication Number Publication Date
CN111649195A true CN111649195A (en) 2020-09-11

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ID=72346999

Family Applications (2)

Application Number Title Priority Date Filing Date
CN202010488343.2A Withdrawn CN111649195A (en) 2020-06-02 2020-06-02 Display screen splicing, supporting and adjusting device for screen
CN202110289156.6A Pending CN112856146A (en) 2020-06-02 2021-03-18 Display screen splicing, supporting and adjusting device for screen

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN202110289156.6A Pending CN112856146A (en) 2020-06-02 2021-03-18 Display screen splicing, supporting and adjusting device for screen

Country Status (1)

Country Link
CN (2) CN111649195A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112133191A (en) * 2020-09-23 2020-12-25 爱奇视智慧技术(深圳)有限公司 Spliced screen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102853232B (en) * 2012-08-16 2015-03-11 深圳市创维群欣安防科技有限公司 Liquid crystal panel spliced front maintenance device
CN106704779B (en) * 2017-03-29 2018-12-11 宁波渠成进出口有限公司 A kind of lift display screen hanger
CN208605894U (en) * 2018-06-26 2019-03-15 裴旭波 Display screen wall hanging frame
CN209876444U (en) * 2019-03-30 2019-12-31 深圳市依格欣计算机技术有限公司 Front maintenance splicing display screen installation device convenient to adjust
CN214789960U (en) * 2020-06-02 2021-11-19 沈阳易诚智讯科技发展有限公司 Display screen splicing, supporting and adjusting device for screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112133191A (en) * 2020-09-23 2020-12-25 爱奇视智慧技术(深圳)有限公司 Spliced screen

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Application publication date: 20200911

WW01 Invention patent application withdrawn after publication