CN116153203A - Display module installs locking structure fast - Google Patents

Display module installs locking structure fast Download PDF

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Publication number
CN116153203A
CN116153203A CN202211707559.9A CN202211707559A CN116153203A CN 116153203 A CN116153203 A CN 116153203A CN 202211707559 A CN202211707559 A CN 202211707559A CN 116153203 A CN116153203 A CN 116153203A
Authority
CN
China
Prior art keywords
display module
module body
sleeve
rod
mounting
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.)
Pending
Application number
CN202211707559.9A
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Chinese (zh)
Inventor
张磊
郝莉
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.)
Beijing Grid Weilai Technology Co ltd
Original Assignee
Beijing Grid Weilai Technology 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 Beijing Grid Weilai Technology Co ltd filed Critical Beijing Grid Weilai Technology Co ltd
Priority to CN202211707559.9A priority Critical patent/CN116153203A/en
Publication of CN116153203A publication Critical patent/CN116153203A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating 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
    • G09F9/302Indicating 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 characterised by the form or geometrical disposition of the individual elements
    • G09F9/3026Video wall, i.e. stackable semiconductor matrix display modules
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating 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
    • G09F9/33Indicating 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 being semiconductor devices, e.g. diodes
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/0026Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
    • H05K5/0065Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units wherein modules are associated together, e.g. electromechanical assemblies, modular structures
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/0208Interlock mechanisms; Means for avoiding unauthorised use or function, e.g. tamperproof
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)

Abstract

The invention belongs to the technical field of display modules, and particularly relates to a rapid mounting and locking structure of a display module. The invention controls the first display module body to drive the mounting sleeve and the second display module body to be close to each other, then the right end of the mounting sleeve can extrude the inclined planes of the mounting blocks, so that the two mounting blocks stably slide and are far away from each other through the connecting rod and the fixing sleeve which are connected in a sliding way, the sliding friction force of the mounting blocks is conveniently reduced through the arrangement of the rollers, the sliding is smoother, the second positioning rod can be inserted into the mounting sleeve, and then the mounting blocks are reset again under the action of the springs and are clamped into the positioning grooves at the periphery of the right end of the mounting sleeve, so that the first display module body and the second display module body can be positioned and mounted preliminarily.

Description

Display module installs locking structure fast
Technical Field
The invention belongs to the technical field of display modules, and particularly relates to a rapid installation locking structure of a display module.
Background
The display module is a foundation in the LED display screen, is a single component for realizing the assembly of a modularized mechanism, and is commonly called to splice a component with a higher level on a box body after each display unit is manufactured in the production process of the LED display screen, and then the whole LED display screen is spliced.
In the assembly process of the display screen module, the traditional mode mostly uses screw fixation, the operating time is longer, the quick installation locking and the disassembly are inconvenient, and therefore the quick installation locking structure of the display module is needed, and the current common locking structure on the market is inconvenient to realize quick and simple installation, the installation locking time is long, the installation efficiency is not high, and the double fixing effect is not achieved. Therefore, improvement on the existing display module rapid installation locking structure is urgently needed, and the display module rapid installation locking structure is provided.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the rapid installation locking structure of the display module, which has the advantages of reasonable design, simple structure and high installation and disassembly speed, and is used for solving the problems of inconvenience in realizing rapid and simple installation, long installation locking time, low installation efficiency, no double fixing effect and the like existing in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a display module installs locking structure fast, it includes first display module body, the right side upper end of first display module body is provided with first locating lever, and strengthening mechanism is installed to the front end of first display module body, and strengthening mechanism's right-hand member is provided with the second display module body, and the left end internally mounted of second display module body has quick fixed establishment, and quick fixed establishment's outside is connected with the installation cover.
As a preferred implementation mode, the connection mode of the first display module body and the first positioning rod is welding, the first positioning rod is arranged symmetrically around the central axis of the first display module body, and the top end of the second display module body is internally provided with a positioning hole matched with the first positioning rod.
As a preferred embodiment, the reinforcing mechanism comprises a limiting block, a threaded rod and a fixed block, wherein the threaded rod is arranged inside the right end of the limiting block, and the fixed block is arranged at the front end of the threaded rod.
As a preferred implementation mode, the connection mode of the limiting block and the first display module body is hinged, the connection mode of the limiting block and the fixed block is clamping connection, the threaded rod is fixedly connected with the fixed block, and the threaded rod is in threaded connection with the second display module body.
As a preferred embodiment, the quick fixing mechanism comprises a second positioning rod, a mounting block, rollers, a connecting rod, a fixing sleeve and a spring, wherein the mounting block is arranged at the front end and the rear end of the second positioning rod, the rollers are arranged at the right end of the mounting block, the connecting rod is arranged at one end, far away from the second positioning rod, of the mounting block, the fixing sleeve is connected to the outer side of the connecting rod, and the spring is connected between the mounting block and the fixing sleeve.
As a preferred implementation mode, the connection mode of second locating lever and second display module body is the welding, two the left end of installation piece is the inclined plane each other that is close to one side, and the installation piece links to each other with the connecting rod is fixed.
As a preferred implementation mode, the connecting rod is connected with the fixed sleeve in a sliding way, the fixed sleeve is welded with the second display module body in a connecting way, the mounting sleeve is connected with the second positioning rod in a sliding way, the diameter of the right end of the mounting sleeve is gradually decreased in a direction approaching to the second display module body, and the circumferential side of the right end of the mounting sleeve is provided with the annular positioning groove.
Compared with the prior art, the invention has the beneficial effects that:
in the scheme of the invention:
the first display module body is controlled to drive the mounting sleeve and the second display module body to be close to each other, then the right end of the mounting sleeve can extrude the inclined planes of the mounting blocks, so that the two mounting blocks stably slide and are far away from each other through the connecting rod and the fixing sleeve which are connected in a sliding manner, the sliding friction force of the mounting blocks is conveniently reduced through the arrangement of the rollers, the sliding is smoother, the second positioning rod can be inserted into the mounting sleeve, and then the mounting blocks are reset again under the action of the springs and clamped into the positioning grooves at the periphery of the right end of the mounting sleeve, so that the first display module body and the second display module body can be positioned and mounted preliminarily;
the manual threaded rod that rotates drives fixed block synchronous revolution through the threaded rod, and when the fixed block rotated and the same vertical direction of the draw-in groove of restriction piece inside, rotate restriction piece and fixed block, then drive the fixed block through the threaded rod and rotate 90 degrees once more, make the protrusion form structure of fixed block week side stagger with the inside recess of restriction piece, can consolidate the installation of first display module body and second display module body, make the connection of first display module body and second display module body more stable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and the following description will be made with reference to the drawings:
FIG. 1 is a schematic diagram of the overall front view of the present invention;
FIG. 2 is a schematic top view of the overall cross-section of the present invention;
FIG. 3 is a schematic view showing a rear cross-sectional structure of a first display module body and a mounting sleeve according to the present invention;
FIG. 4 is a schematic diagram of the front view of the reinforcement mechanism of the present invention;
FIG. 5 is a schematic cross-sectional left-view structure of the quick-fixing mechanism of the present invention;
FIG. 6 is a schematic view of the overall structure of the mounting sleeve of the present invention.
In the figure:
1. a first display module body; 2. a first positioning rod; 3. a reinforcement mechanism; 301. a limiting block; 302. a threaded rod; 303. a fixed block; 4. a second display module body; 5. a quick fixing mechanism; 501. a second positioning rod; 502. a mounting block; 503. a roller; 504. a connecting rod; 505. a fixed sleeve; 506. a spring; 6. and (5) installing a sleeve.
Detailed Description
The embodiments described below are only some of the embodiments of the present invention and do not represent all embodiments consistent with the present invention. Exemplary embodiments will now be described with reference to the accompanying drawings in which:
as shown in fig. 1 to 6, the display module rapid installation locking structure of the present invention comprises a first display module body 1, wherein a first positioning rod 2 is arranged at the upper right end of the first display module body 1, the first positioning rod 2 is arranged to facilitate the position fixing of the first display module body 1, the first display module body is prevented from rotating, a reinforcing mechanism 3 is arranged at the front end of the first display module body 1, the reinforcing mechanism 3 is arranged to facilitate the dual fixing of the installation of the first display module body 1 and the second display module body 4, a second display module body 4 is arranged at the right end of the reinforcing mechanism 3, the first display module body 1 and the second display module body 4 are conveniently connected by arranging the second display module body 4, a rapid fixing mechanism 5 is arranged at the inner left end of the second display module body 4, the first display module body 1 and the second display module body 4 are conveniently and rapidly installed by arranging the rapid fixing mechanism 5, an installation sleeve 6 is connected to the outer side of the rapid fixing mechanism 5, and the first display module body 1 and the second display module body 4 are conveniently and rapidly installed by arranging the installation sleeve 6.
As a preferred embodiment, on the basis of the above structure, further, the connection mode of the first display module body 1 and the first positioning rod 2 is welding, the first positioning rod 2 is symmetrically arranged around the central axis of the first display module body 1, the top end of the second display module body 4 is internally provided with a positioning hole matched with the first positioning rod 2, and the first positioning rod 2 is arranged to facilitate stable butt joint of the first display module body 1 and the second display module body 4.
As a preferred embodiment, on the basis of the above structure, the reinforcement mechanism 3 further includes a limiting block 301, a threaded rod 302 and a fixing block 303, the threaded rod 302 is disposed inside the right end of the limiting block 301, the fixing block 303 is mounted at the front end of the threaded rod 302, and the secondary fixing of the first display module body 1 and the second display module body 4 is facilitated by providing the reinforcement mechanism 3.
In a preferred embodiment, in addition to the above structure, the connection mode between the limiting block 301 and the first display module body 1 is a hinge, the connection mode between the limiting block 301 and the fixing block 303 is a snap connection, the threaded rod 302 is fixedly connected to the fixing block 303, the threaded rod 302 is in threaded connection with the second display module body 4, and the position of the limiting block 301 is conveniently fixed by the snap connection between the limiting block 301 and the fixing block 303.
As a preferred embodiment, on the basis of the above structure, further, the quick fixing mechanism 5 includes a second positioning rod 501, a mounting block 502, a roller 503, a connecting rod 504, a fixing sleeve 505 and a spring 506, the front and rear ends of the second positioning rod 501 are both provided with the mounting block 502, the roller 503 is mounted at the right end of the mounting block 502, one end of the mounting block 502 far away from the second positioning rod 501 is provided with the connecting rod 504, the outer side of the connecting rod 504 is connected with the fixing sleeve 505, the spring 506 is connected between the mounting block 502 and the fixing sleeve 505, and the quick mounting of the first display module body 1 and the second display module body 4 is facilitated by setting the quick fixing mechanism 5.
As a preferred embodiment, on the basis of the above structure, further, the connection mode of the second positioning rod 501 and the second display module body 4 is welding, the sides of the left ends of the two mounting blocks 502, which are close to each other, are all inclined planes, the mounting blocks 502 are fixedly connected with the connecting rod 504, and the positions of the first display module body 1 are conveniently fixed by being clamped with the mounting sleeve 6 through the arrangement of the rods of the mounting blocks 502.
As a preferred embodiment, on the basis of the above structure, the connecting rod 504 is further slidably connected with the fixing sleeve 505, the fixing sleeve 505 is welded to the second display module body 4 in a connection manner, the mounting sleeve 6 is slidably connected with the second positioning rod 501, the diameter of the right end of the mounting sleeve 6 is gradually decreased in a direction approaching to the second display module body 4, the circumferential side of the right end of the mounting sleeve 6 is provided with an annular positioning groove, and the roller 503 is used to facilitate the sliding smoothness of the mounting block 502 to be improved and reduce the friction force.
The working principle of the invention is as follows:
when the display module is used, the first positioning rod 2 on the right side of the first display module body 1 is aligned with the matched positioning hole in the top end of the second display module body 4, then the first display module body 1 is continuously made to be close to the second display module body 4 to enable the first display module body 1 and the second display module body to be closely attached, when the right end of the mounting sleeve 6 presses the inclined plane of the mounting block 502, the mounting block 502 can be pressed and stably slides through the connecting rod 504 and the fixing sleeve 505 which are connected in a sliding manner, the mounting blocks 502 at the front end and the rear end are separated from each other, friction force between the mounting block 502 and the second display module body 4 can be reduced through the arrangement of the roller 503, the moving smoothness of the mounting block 502 can be improved, the second positioning rod 501 can be inserted into the mounting sleeve 6, and then the mounting block 502 is reset under the action of the spring 506 and is clamped into the positioning groove at the periphery of the right end of the mounting sleeve 6, so that preliminary positioning and mounting between the first display module body 1 and the second display module body 4 can be conveniently carried out;
after the first display module body 1 and the second display module body 4 are initially installed, the threaded rod 302 is manually rotated, when the threaded rod 302 drives the fixed block 303 to rotate to the same vertical direction as the clamping groove in the limiting block 301, the limiting block 301 can be rotated to pass through the fixed block 303 and be positioned outside the threaded rod 302, and then the threaded rod 302 drives the fixed block 303 to rotate 90 degrees, so that the convex structure on the periphery of the fixed block 303 is staggered with the groove in the limiting block 301, the installation of the first display module body 1 and the second display module body 4 can be reinforced, and the connection of the first display module body 1 and the second display module body 4 is more stable;
in conclusion, the display module locking structure has double positioning effects, higher installation stability, high installation speed and more convenient use.
The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; all equivalent changes, modifications, substitutions and variations on the prior art by logic analysis, reasoning or limited experiments by those skilled in the art, based on the present inventive concept, shall be made within the scope of protection as defined by the claims.

Claims (7)

1. The utility model provides a display module installs locking structure fast, includes first display module body (1), its characterized in that: the right side upper end of first display module body (1) is provided with first locating lever (2), and strengthening mechanism (3) are installed to the front end of first display module body (1), and the right-hand member of strengthening mechanism (3) is provided with second display module body (4), and the left end internally mounted of second display module body (4) has quick fixed establishment (5), and the outside of quick fixed establishment (5) is connected with installation cover (6).
2. The quick install lock mechanism for a display module of claim 1, wherein: the connecting mode of the first display module body (1) and the first positioning rod (2) is welding, the first positioning rod (2) is arranged symmetrically around the central axis of the first display module body (1), and positioning holes matched with the first positioning rod (2) are formed in the top end of the second display module body (4).
3. The quick install lock mechanism for a display module of claim 1, wherein: the reinforcing mechanism (3) comprises a limiting block (301), a threaded rod (302) and a fixed block (303), wherein the threaded rod (302) is arranged in the right end of the limiting block (301), and the fixed block (303) is arranged at the front end of the threaded rod (302).
4. A quick install lock structure for a display module as claimed in claim 3, wherein: the limiting block (301) is hinged to the first display module body (1), the limiting block (301) is connected with the fixed block (303) in a clamping mode, the threaded rod (302) is fixedly connected with the fixed block (303), and the threaded rod (302) is in threaded connection with the second display module body (4).
5. The quick install lock mechanism for a display module of claim 1, wherein: quick fixed establishment (5) are including second locating lever (501), installation piece (502), gyro wheel (503), connecting rod (504), fixed cover (505) and spring (506), both ends all are provided with installation piece (502) around second locating lever (501), gyro wheel (503) are installed to the right-hand member of installation piece (502), one end that second locating lever (501) was kept away from to installation piece (502) is provided with connecting rod (504), the outside of connecting rod (504) is connected with fixed cover (505), be connected with spring (506) between installation piece (502) and fixed cover (505).
6. The quick install lock mechanism for a display module of claim 5, wherein: the second positioning rod (501) is welded with the second display module body (4), one sides of the left ends of the two mounting blocks (502) close to each other are inclined planes, and the mounting blocks (502) are fixedly connected with the connecting rod (504).
7. The quick install lock mechanism for a display module of claim 5, wherein: the connecting rod (504) is connected with the fixed sleeve (505) in a sliding mode, the fixed sleeve (505) is welded with the second display module body (4), the installation sleeve (6) is connected with the second positioning rod (501) in a sliding mode, the diameter of the right end of the installation sleeve (6) is gradually decreased in a direction close to the second display module body (4), and the circumferential side of the right end of the installation sleeve (6) is provided with an annular positioning groove.
CN202211707559.9A 2022-12-28 2022-12-28 Display module installs locking structure fast Pending CN116153203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211707559.9A CN116153203A (en) 2022-12-28 2022-12-28 Display module installs locking structure fast

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211707559.9A CN116153203A (en) 2022-12-28 2022-12-28 Display module installs locking structure fast

Publications (1)

Publication Number Publication Date
CN116153203A true CN116153203A (en) 2023-05-23

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201965859U (en) * 2010-11-30 2011-09-07 深圳市联建光电股份有限公司 Light emitting diode (LED) grating screen display module
CN207489380U (en) * 2017-11-07 2018-06-12 深圳洛可可工业设计有限公司 A kind of mirror screen connection structure and use its LED component
WO2018214504A1 (en) * 2017-05-24 2018-11-29 深圳市雷迪奥视觉技术有限公司 Fast locking piece and display screen assembly
CN110648598A (en) * 2018-06-27 2020-01-03 深圳市华夏光彩股份有限公司 Splicing display screen
CN211052802U (en) * 2019-10-23 2020-07-21 山东轩烨机器人科技有限公司 Arc welding robot for carrier roller bracket welding robot workstation
CN214253730U (en) * 2021-03-03 2021-09-21 东莞市格优电子科技有限公司 Micro-space splicing type LED display screen convenient to clamp
CN215674426U (en) * 2021-08-27 2022-01-28 石家庄七彩联创光电科技有限公司 Seamless splicing and assembling frame for LED electronic screen
CN216562296U (en) * 2021-12-08 2022-05-17 北京网格蔚来科技有限公司 Display screen module easy to disassemble and assemble
CN216923434U (en) * 2021-12-18 2022-07-08 潍坊祥润管业有限公司 Convenient fixed building fire control pipe fitting
CN218016216U (en) * 2022-07-04 2022-12-13 老河口市鑫台优五金电子有限公司 Gear hobbing machine for flat gear

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201965859U (en) * 2010-11-30 2011-09-07 深圳市联建光电股份有限公司 Light emitting diode (LED) grating screen display module
WO2018214504A1 (en) * 2017-05-24 2018-11-29 深圳市雷迪奥视觉技术有限公司 Fast locking piece and display screen assembly
CN207489380U (en) * 2017-11-07 2018-06-12 深圳洛可可工业设计有限公司 A kind of mirror screen connection structure and use its LED component
CN110648598A (en) * 2018-06-27 2020-01-03 深圳市华夏光彩股份有限公司 Splicing display screen
CN211052802U (en) * 2019-10-23 2020-07-21 山东轩烨机器人科技有限公司 Arc welding robot for carrier roller bracket welding robot workstation
CN214253730U (en) * 2021-03-03 2021-09-21 东莞市格优电子科技有限公司 Micro-space splicing type LED display screen convenient to clamp
CN215674426U (en) * 2021-08-27 2022-01-28 石家庄七彩联创光电科技有限公司 Seamless splicing and assembling frame for LED electronic screen
CN216562296U (en) * 2021-12-08 2022-05-17 北京网格蔚来科技有限公司 Display screen module easy to disassemble and assemble
CN216923434U (en) * 2021-12-18 2022-07-08 潍坊祥润管业有限公司 Convenient fixed building fire control pipe fitting
CN218016216U (en) * 2022-07-04 2022-12-13 老河口市鑫台优五金电子有限公司 Gear hobbing machine for flat gear

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Application publication date: 20230523

RJ01 Rejection of invention patent application after publication