CN111348080A - Multifunctional lifting cart - Google Patents

Multifunctional lifting cart Download PDF

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Publication number
CN111348080A
CN111348080A CN202010317032.XA CN202010317032A CN111348080A CN 111348080 A CN111348080 A CN 111348080A CN 202010317032 A CN202010317032 A CN 202010317032A CN 111348080 A CN111348080 A CN 111348080A
Authority
CN
China
Prior art keywords
inner tube
screw
accordance
cart
lifting cart
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
CN202010317032.XA
Other languages
Chinese (zh)
Inventor
刘勇华
李聪
周日东
周泽南
杨爱英
金小鑫
刘军
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.)
Ningbo Fumei Opto Electronics Technology Co ltd
Original Assignee
Ningbo Fumei Opto Electronics 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 Ningbo Fumei Opto Electronics Technology Co ltd filed Critical Ningbo Fumei Opto Electronics Technology Co ltd
Priority to CN202010317032.XA priority Critical patent/CN111348080A/en
Publication of CN111348080A publication Critical patent/CN111348080A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/02Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B97/00Furniture or accessories for furniture, not provided for in other groups of this subclass
    • A47B97/04Easels or stands for blackboards or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/04Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20Undercarriages with or without wheels
    • F16M11/24Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/26Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/42Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2202/00Indexing codes relating to type or characteristics of transported articles
    • B62B2202/56Computers; Screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2203/00Grasping, holding, supporting the objects
    • B62B2203/10Grasping, holding, supporting the objects comprising lifting means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2203/00Grasping, holding, supporting the objects
    • B62B2203/60Positioning, means on a cart for loads

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention relates to a multifunctional lifting cart which comprises a cart base, wherein two lifting assemblies are symmetrically arranged on two sides of the upper end of the cart base, each lifting assembly comprises an inner tube assembly, an outer tube and a driving piece, the inner tube assemblies are arranged in the outer tubes, the driving pieces are used for controlling the inner tube assemblies to lift up and down along the inner walls of the outer tubes, and a support is arranged between the two inner tube assemblies. The invention combines the screen and the lifting cart, and improves the practicability and diversity of the whole equipment.

Description

Multifunctional lifting cart
Technical Field
The invention relates to the technical field of office facilities, in particular to a multifunctional lifting cart.
Background
Office facilities such as a tablet and a television are often used in places such as offices and conference rooms, but these facilities are generally specified in use specifications and cannot be lifted up and down. For this reason, it is necessary to design a versatile lifting device.
The screen is used in office and other places, and is used for wind shielding furniture in buildings, and generally arranged in a remarkable position in a room to play roles of separation, beautification, wind shielding, coordination and the like. At present, no equipment combining a universal lifting device with a screen exists.
Disclosure of Invention
The invention aims to solve the technical problem of providing a multifunctional lifting trolley, which realizes the up-and-down lifting of a writing board or a television.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a multi-functional lift shallow, includes the shallow base, shallow base upper end bilateral symmetry be provided with two lifting unit, this lifting unit includes inner tube subassembly, outer tube and driving piece, the inner tube subassembly install in the outer tube, the driving piece be used for controlling inner tube subassembly along outer tube inner wall oscilaltion, install the support between two inner tube subassemblies.
As a supplement to the technical scheme of the invention, universal rollers are arranged at four corners of the lower end of the cart base.
As a supplement to the technical solution of the present invention, a television or a tablet is suspended on the support.
As a supplement to the technical scheme of the invention, each outer tube is provided with a first fixing clamp, the two first fixing clamps are symmetrically arranged, and a fixing screen is arranged between the two first fixing clamps.
As a supplement to the technical scheme of the invention, the first fixing clamp comprises an L-shaped connecting frame, a gear bar and a U-shaped clamping piece, one end of the L-shaped connecting frame is fixed with the side wall of the outer tube, the other end of the L-shaped connecting frame is fixedly connected with the gear bar through a screw, the gear bar is uniformly provided with a plurality of straight through holes along the length direction, and one of the straight through holes is selected to be connected with the U-shaped clamping piece through a screw.
As a supplement to the technical scheme of the invention, the L-shaped connecting frame is provided with a strip-shaped through hole.
As a supplement to the technical scheme of the invention, the inner tube assembly comprises an inner tube, a support rod and a sleeve, the inner tube is lifted up and down along the inner wall of the outer tube, the support rod is mounted at the upper end of the inner tube, the sleeve is mounted in the inner tube, the driving piece comprises a motor, a screw rod and a screw nut in screw transmission, the screw rod is mounted in the sleeve, the screw nut is fixed at the bottom of the sleeve, and the motor is mounted in the base of the cart and connected with the screw rod.
As a supplement to the technical scheme of the invention, the upper end of each inner tube is connected with a second fixing clamp, the two second fixing clamps are symmetrically arranged, and a movable screen is arranged between the two second fixing clamps.
As a supplement to the technical scheme of the invention, the second fixing clamp comprises a L-shaped plate, a gear strip and a U-shaped clamping piece, one end of the L-shaped plate is fixed with the upper end of the inner tube, the other end of the L-shaped plate is fixedly connected with the gear strip through a screw, a plurality of straight through holes are uniformly arranged on the gear strip along the length direction, and one of the straight through holes is selected to be connected with the U-shaped clamping piece through a screw.
As a supplement to the technical solution of the present invention, the support is two beams arranged in parallel.
Has the advantages that: the invention relates to a multifunctional lifting cart, which has the following advantages:
1. the back of the writing board can be hung on the beam through the writing board hook, the television can also be hung on the beam through the television hanging arm, and the driving piece controls the inner tube to lift up and down along the inner wall of the outer tube, so that the writing board or the television can lift up and down;
2. the fixed screen is fixedly connected to the outer pipe and keeps relatively immobile, the movable screen is fixedly connected to the inner pipe, the movable screen rises along with the extension of the inner pipe, the screen is combined with the lifting cart, and the practicability and diversity of the whole equipment are improved.
Drawings
FIG. 1 is a schematic diagram of a suspended television according to the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the lift assembly of the present invention with the drive member removed;
FIG. 4 is a schematic view of the internal structure of the lift assembly of the present invention;
FIG. 5 is a schematic view of the lift assembly of the present invention;
FIG. 6 is a schematic view of a first mounting clip according to the present invention;
FIG. 7 is a schematic structural view of an L-shaped connecting frame according to the present invention;
fig. 8 is a schematic structural view of a second fixing clip according to the present invention.
The figure is as follows: 1. the television comprises a cart base, 2, a fixed screen, 3, a television, 4, a movable screen, 5, a first fixing clamp, 6, a second fixing clamp, 7, universal rollers, 8, an outer pipe, 9, an inner pipe assembly, 10, a support, 11, a writing board hook, 12, a television hanging arm, 13, an inner pipe, 14, a fixed plate, 15, a supporting rod, 16, a motor, 17, a screw rod, 18, a sleeve, 19, a screw rod nut, 20, an L-shaped connecting frame, 21, a gear bar, 22, a U-shaped clamping piece, 23, a straight through hole, 24, a gasket, 25, a 'L' -shaped plate, 26 and a long-strip-shaped through hole.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The embodiment of the invention relates to a multifunctional lifting cart, which comprises a cart base 1, wherein two lifting assemblies are symmetrically arranged on two sides of the upper end of the cart base 1, each lifting assembly comprises an inner tube assembly 9, an outer tube 8 and a driving piece, the inner tube assemblies 9 are arranged in the outer tubes 8, the driving pieces are used for controlling the inner tube assemblies 9 to lift up and down along the inner walls of the outer tubes 8, and a support 10 is arranged between the two inner tube assemblies 9.
Four corners of the lower end of the cart base 1 are provided with universal idler wheels 7, and the universal idler wheels 7 facilitate the transfer of the whole cart.
The support 10 is two beams arranged in parallel, and the television 3 or a tablet is suspended on the support 10. As best seen in fig. 2, the tv hanging arm 12 and the tablet hook 11 are suspended from the beam. The back of the writing board is hung on the beam through a writing board hook 11, the television 3 is hung on the beam through a television hanging arm 12, and the television hanging arm 12 can adjust the mounting position of the television 3 up and down.
Each outer pipe 8 is provided with a first fixing clamp 5, the two first fixing clamps 5 are symmetrically arranged, and a fixing screen 2 is arranged between the two first fixing clamps 5. The upper end of each inner pipe 13 is connected with a second fixing clamp 6, the two second fixing clamps 6 are symmetrically arranged, and a movable screen 4 is arranged between the two second fixing clamps 6.
The fixed screen 2 is fixedly connected to the outer pipe 8 and kept relatively still, while the movable screen 4 is fixedly connected to the inner pipe 13, and the movable screen 4 rises along with the extension of the inner pipe 13. The screen and the lifting cart are combined, so that the practicability and the diversity of the whole equipment are improved.
First fixation clamp 5 include L type link 20, gear strip 21 and U type clamping piece 22, L type link 20 one end fixed with 8 lateral walls of outer tube, this L type link 20 other end passes through screw and gear strip 21 fixed connection. The U-shaped clamping piece 22 is matched with a screw or other fasteners to clamp one side of the fixed screen 2, a plurality of straight through holes 23 are uniformly arranged on the gear bar 21 along the length direction, and according to the different lengths of the fixed screen 2, the proper straight through holes 23 are selected and connected with the U-shaped clamping piece 22 through screws.
The L-shaped connecting frame 20 is provided with a strip-shaped through hole 26, and the strip-shaped through hole 26 is fixed with the side wall of the outer tube 8 by matching with a screw. The elongated through holes 26 are provided to adjust the position of the stationary screen 2 in the front-rear direction. A gasket 24 is arranged between the L-shaped connecting frame 20 and the side wall of the outer pipe 8.
The inner tube assembly 9 comprises an inner tube 13, a support rod 15 and a sleeve 18, the inner tube 13 ascends and descends along the inner wall of the outer tube 8, the support rod 15 is installed at the upper end of the inner tube 13, the sleeve 18 is installed in the inner tube 13, the driving piece comprises a motor 16, a screw rod 17 and a screw nut 19 in screw transmission, the screw rod 17 is installed in the sleeve 18, the screw nut 19 is fixed at the bottom of the sleeve 18, and the motor 16 is installed in the cart base 1 and connected with the screw rod 17. The structure of the driving member is not necessarily the same as that of the above structure, and the driving member only needs to control the inner tube 13 to move up and down along the inner wall of the outer tube 8.
Second fixation clamp 6 include "L" template 25, gear strip 21 and U type clamping piece 22, "L" template 25 one end fixed with inner tube 13 upper end, this "L" template 25 other end passes through screw and gear strip 21 fixed connection, gear strip 21 evenly arranged a plurality of word through-hole 23 along length direction, select one of them word through-hole 23 to be connected with U type clamping piece 22 through the screw. The U-shaped clamping piece 22 is matched with a screw or other fasteners to clamp one side of the movable screen 4, a plurality of straight through holes 23 are uniformly arranged on the gear strips 21 along the length direction, and according to the different lengths of the movable screen 4, proper straight through holes 23 are selected and connected with the U-shaped clamping piece 22 through screws.
The "l" type plate 25 and the lower portion of the support rod 15 are pressed and fixed by the fixing plate 14, and the position of the fixing plate 14 can be seen in fig. 3. The fixing plate 14 is fixed with the upper end of the inner tube 13 by screws.

Claims (10)

1. The utility model provides a multi-functional lift shallow, includes shallow base (1), its characterized in that: shallow base (1) upper end bilateral symmetry be provided with two lifting unit, this lifting unit includes inner tube subassembly (9), outer tube (8) and driving piece, inner tube subassembly (9) install in outer tube (8), the driving piece be used for controlling inner tube subassembly (9) along outer tube (8) inner wall oscilaltion, install support (10) between two inner tube subassemblies (9).
2. A multi-functional lifting cart in accordance with claim 1, wherein: four corners of the lower end of the cart base (1) are provided with universal idler wheels (7).
3. A multi-functional lifting cart in accordance with claim 1, wherein: the television (3) or the writing board is hung on the support (10).
4. A multi-functional lifting cart in accordance with claim 1, wherein: a first fixing clamp (5) is arranged on each outer pipe (8), the two first fixing clamps (5) are symmetrically arranged, and a fixing screen (2) is arranged between the two first fixing clamps (5).
5. A multi-functional lifting cart in accordance with claim 1, wherein: first fixation clamp (5) include L type link (20), gear strip (21) and U type clamping piece (22), L type link (20) one end fixed with outer tube (8) lateral wall, this L type link (20) other end passes through screw and gear strip (21) fixed connection, gear strip (21) evenly arranged a plurality of word through-hole (23) along length direction, select one of them word through-hole (23) to be connected with U type clamping piece (22) through the screw.
6. A multi-functional lifting cart in accordance with claim 1, wherein: the L-shaped connecting frame (20) is provided with a strip-shaped through hole (26).
7. A multi-functional lifting cart in accordance with claim 1, wherein: inner tube subassembly (9) include inner tube (13), bracing piece (15) and sleeve (18), inner tube (13) along outer tube (8) inner wall oscilaltion, bracing piece (15) are installed to this inner tube (13) upper end, inner tube (13) in install sleeve (18), the driving piece include motor (16), screw drive's lead screw (17) and screw-nut (19), lead screw (17) install in sleeve (18), screw-nut (19) fix in sleeve (18) bottom, motor (16) install in shallow base (1) and link to each other with lead screw (17).
8. A multi-functional lifting cart in accordance with claim 7, wherein: the upper end of each inner pipe (13) is connected with a second fixing clamp (6), the two second fixing clamps (6) are symmetrically arranged, and a movable screen (4) is arranged between the two second fixing clamps (6).
9. A multi-functional lifting cart in accordance with claim 8, wherein: second fixation clamp (6) including "L" template (25), gear strip (21) and U type clamping piece (22), "L" template (25) one end and inner tube (13) upper end fixed, this "L" template (25) other end passes through screw and gear strip (21) fixed connection, gear strip (21) evenly arranged a plurality of word through-hole (23) along length direction, select one of them word through-hole (23) to be connected with U type clamping piece (22) through the screw.
10. A multi-functional lifting cart in accordance with claim 1, wherein: the support (10) is two cross beams which are arranged in parallel.
CN202010317032.XA 2020-04-21 2020-04-21 Multifunctional lifting cart Pending CN111348080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010317032.XA CN111348080A (en) 2020-04-21 2020-04-21 Multifunctional lifting cart

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010317032.XA CN111348080A (en) 2020-04-21 2020-04-21 Multifunctional lifting cart

Publications (1)

Publication Number Publication Date
CN111348080A true CN111348080A (en) 2020-06-30

Family

ID=71195028

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010317032.XA Pending CN111348080A (en) 2020-04-21 2020-04-21 Multifunctional lifting cart

Country Status (1)

Country Link
CN (1) CN111348080A (en)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2604930Y (en) * 2003-01-28 2004-03-03 周钊文 Height-adjustable screen
CN202069211U (en) * 2011-05-31 2011-12-14 常州立图电子科技有限公司 Integrated bracket of white board and projector
CN203651650U (en) * 2013-12-12 2014-06-18 福建蓝海专用汽车制造有限公司 Automobile with lifting television separation screen
CN204263777U (en) * 2014-11-28 2015-04-15 厦门汉博科机电自动化设备有限公司 A kind of variable-size automatic blackboard
CN204506237U (en) * 2015-04-10 2015-07-29 临沂大学 A kind of Multifunctional teaching aid for foreign language teaching
CN206246973U (en) * 2016-11-03 2017-06-13 张家港市万事达电教科技有限公司 One kind lifting electronic LCD TV go-cart of flip type
CN107928211A (en) * 2017-12-13 2018-04-20 重庆蜀腾科技有限公司 It is a kind of to clamp stable electronic whiteboard bracket
CN207316398U (en) * 2017-07-31 2018-05-04 浙江铭盛科技有限公司 A kind of electronic whiteboard bracket
CN208114293U (en) * 2018-02-05 2018-11-20 广州和力视听设备有限公司 The multi-functional screen table with liquid crystal display
CN208348884U (en) * 2018-05-14 2019-01-08 南通市久正人体工学股份有限公司 A kind of electrically driven truck lifting device
CN209171723U (en) * 2018-08-31 2019-07-30 江苏亿建能源电器有限公司 A kind of day common aluminium frame magnetic white board
CN209528497U (en) * 2018-10-15 2019-10-25 浙江经济职业技术学院 A kind of fixed bracket of movable white plate
CN209674623U (en) * 2019-01-31 2019-11-22 吉首大学 A kind of bending type showing stand imparted knowledge to students with full of beard political affairs
CN209862746U (en) * 2019-03-01 2019-12-31 东莞市洪武电子有限公司 Combined office table with liftable screen
CN212500491U (en) * 2020-04-21 2021-02-09 宁波富美光电科技有限公司 Multifunctional lifting cart

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2604930Y (en) * 2003-01-28 2004-03-03 周钊文 Height-adjustable screen
CN202069211U (en) * 2011-05-31 2011-12-14 常州立图电子科技有限公司 Integrated bracket of white board and projector
CN203651650U (en) * 2013-12-12 2014-06-18 福建蓝海专用汽车制造有限公司 Automobile with lifting television separation screen
CN204263777U (en) * 2014-11-28 2015-04-15 厦门汉博科机电自动化设备有限公司 A kind of variable-size automatic blackboard
CN204506237U (en) * 2015-04-10 2015-07-29 临沂大学 A kind of Multifunctional teaching aid for foreign language teaching
CN206246973U (en) * 2016-11-03 2017-06-13 张家港市万事达电教科技有限公司 One kind lifting electronic LCD TV go-cart of flip type
CN207316398U (en) * 2017-07-31 2018-05-04 浙江铭盛科技有限公司 A kind of electronic whiteboard bracket
CN107928211A (en) * 2017-12-13 2018-04-20 重庆蜀腾科技有限公司 It is a kind of to clamp stable electronic whiteboard bracket
CN208114293U (en) * 2018-02-05 2018-11-20 广州和力视听设备有限公司 The multi-functional screen table with liquid crystal display
CN208348884U (en) * 2018-05-14 2019-01-08 南通市久正人体工学股份有限公司 A kind of electrically driven truck lifting device
CN209171723U (en) * 2018-08-31 2019-07-30 江苏亿建能源电器有限公司 A kind of day common aluminium frame magnetic white board
CN209528497U (en) * 2018-10-15 2019-10-25 浙江经济职业技术学院 A kind of fixed bracket of movable white plate
CN209674623U (en) * 2019-01-31 2019-11-22 吉首大学 A kind of bending type showing stand imparted knowledge to students with full of beard political affairs
CN209862746U (en) * 2019-03-01 2019-12-31 东莞市洪武电子有限公司 Combined office table with liftable screen
CN212500491U (en) * 2020-04-21 2021-02-09 宁波富美光电科技有限公司 Multifunctional lifting cart

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Application publication date: 20200630

RJ01 Rejection of invention patent application after publication