CN108577198A - A kind of function plotting equipment of Art Design - Google Patents

A kind of function plotting equipment of Art Design Download PDF

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Publication number
CN108577198A
CN108577198A CN201810429558.XA CN201810429558A CN108577198A CN 108577198 A CN108577198 A CN 108577198A CN 201810429558 A CN201810429558 A CN 201810429558A CN 108577198 A CN108577198 A CN 108577198A
Authority
CN
China
Prior art keywords
fixedly connected
groove
support plate
block
art design
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
CN201810429558.XA
Other languages
Chinese (zh)
Inventor
刘祎
谷海燕
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.)
Shandong University
Original Assignee
Shandong University
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 Shandong University filed Critical Shandong University
Priority to CN201810429558.XA priority Critical patent/CN108577198A/en
Publication of CN108577198A publication Critical patent/CN108577198A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • A47B27/00Drawing desks or tables; Carriers for drawing-boards
    • A47B27/02Adjustable drawing tables without balancing means
    • 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
    • A47B27/00Drawing desks or tables; Carriers for drawing-boards
    • A47B27/14Adjustable underframes
    • 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
    • A47B27/00Drawing desks or tables; Carriers for drawing-boards
    • A47B27/18Locking means, e.g. for locking inclination of board
    • 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
    • A47B9/00Tables with tops of variable height

Landscapes

  • Tables And Desks Characterized By Structural Shape (AREA)

Abstract

The invention discloses a kind of function plotting equipments of Art Design, including bottom plate, the upper surface of the bottom plate is fixedly connected there are four electric pushrod, the top of the electric pushrod is fixedly connected with the lower surface of support plate, the upper surface of the support plate is connected with the first rotating device, and the outer surface of first rotating device is fixedly connected with the left side for drawing table.The function plotting equipment of the Art Design, by the way that first rotating shaft is arranged, first bearing, draw table, card slot, fixture block, pressing plate, rubber block, axis pin, connecting rod, block, spring, parcel tray, 4th groove and the second groove, so that picture table and paper are in heeling condition, when people need using painting utensil, painting utensil can be taken out by extraction drawer to paint, use can be taken out out of the 4th groove when needing using ruler, the drawing device not only can be by some Tool integrations, the angle of picture table can also be adjusted, so that more convenient when people's drawing.

Description

A kind of function plotting equipment of Art Design
Technical field
The present invention relates to plotting equipment technical field, the function plotting equipment of specially a kind of Art Design.
Background technology
It is commonly used to the tablet of pad drawing paper when sketch and drawing, is typically located on easel, also has to put and be drawn on knee, on easel Fixed drawing board, some clips, also useful adhesive tape, mostly wooden depending on drawing board size is required with user, feel is slim and graceful, Smooth art supply store is on sale, also can also make by oneself.
Existing drawing board device is only to provide the platform of a drawing, can not accomplish the convenience for giving painter's bigger, paint Picture person needs to use various painting utensils when painting, existing drawing board can not by these Tool integrations, and traditional drawing board without Method adjusts angle, can only lean against drawing board on object and paint, many inconvenience are brought to painter.
Invention content
(1) the technical issues of solving
In view of the deficiencies of the prior art, it the present invention provides a kind of function plotting equipment of Art Design, solves existing Some drawing board devices are only to provide the platform of a drawing, can not accomplish the convenience for giving artist's bigger, be needed when painter paints Various painting utensils are used, existing drawing board can not be by these Tool integrations, and traditional drawing board can not adjust angle Problem.
(2) technical solution
To achieve the above object, the present invention provides the following technical solutions:A kind of function plotting equipment of Art Design, packet Include bottom plate, the upper surface of the bottom plate is fixedly connected there are four electric pushrod, under the top and support plate of the electric pushrod Surface is fixedly connected, and the upper surface of the support plate is connected with the first rotating device, the outer surface of first rotating device with The left side for drawing table is fixedly connected, and the right side for drawing table is fixedly connected there are two block.
The upper surface of the block is fixedly connected by spring with the lower surface of pressing plate, and the lower surface of the pressing plate, which is fixed, to be connected It is connected to rubber block, the lower surface of the rubber block is overlapped with the upper surface for drawing table, and the lower surface of the pressing plate is fixedly connected with Determine block, the back side of the fixed block is flexibly connected by axis pin with one end of connecting rod, the other end and block of the connecting rod Upper surface be fixedly connected.
The lower surface for drawing table offers several card slots, and the card slot is located at the top of third groove, the third Groove is opened in the upper surface of support plate, and the right side of the third groove inner wall is connected with the second rotating device, the third The outer surface of rotating device is fixedly connected with the right side of fixture block.
Preferably, the left side of the support plate offers the first groove, and drawer is provided in first groove, described The left side of drawer is fixedly connected with handle, and the front of the support plate opens up that there are two the second grooves, and two the second grooves It is located at the left side of the 4th groove, the 4th groove is opened in the front of support plate, the lower surface clamping of the support plate There is 3rd bearing, third shaft, the following table of the bottom end and parcel tray inner wall of the third shaft are socketed in the 3rd bearing Face is fixedly connected.
Preferably, first rotating device includes first bearing, and the quantity of the first bearing is two, and two the One bearing inner sleeve is connected to the same first rotating shaft, and the outer surface of the first rotating shaft is fixedly connected with the left side for drawing table.
Preferably, second rotating device includes second bearing, and the quantity of the second bearing is two, and two the Two bearing inner sleeves are connected to same second shaft, and the outer surface of second shaft is fixedly connected with the right side of fixture block.
Preferably, the front of the support plate is fixedly connected with the back side of power supply, the back of the body in the front and switch of the power supply Face is fixedly connected.
Preferably, the output end of the power supply is electrically connected by conducting wire with the input terminal of switch, the output end of the switch It is electrically connected with the input terminal of electric pushrod by conducting wire.
(3) advantageous effect
The present invention provides a kind of function plotting equipments of Art Design, have following advantageous effect:
1, the function plotting equipment of the Art Design, by the way that first rotating shaft is arranged, first bearing, draws table, card slot, card Block, pressing plate, rubber block, axis pin, connecting rod, block, spring, parcel tray, the 4th groove and the second groove, when people need to use When the drawing device, people are manually pressed by pressing plate first, then paper is placed on picture table, unclamp pressing plate so that tension force of spring Band dynamic pressure plate rotates so that pressing plate drives rubber block rotation so that rubber block is contacted with paper, compresses paper, and people overturn picture Table, after adjusting the angle of picture table, people lift fixture block, and fixture block is caught in card slot so that draw table and paper is in and tilts State can take out painting utensil by extraction drawer and paint, need to use ruler when people need using painting utensil When use can be taken out out of the 4th groove, which not only can also adjust picture table by some Tool integrations Angle so that people are more convenient when painting.
2, the function plotting equipment of the Art Design, by the way that third shaft, 3rd bearing, support plate and storing is arranged Box needs painting utensil to be used that can be taken out out of parcel tray when people paint again, after draw tool use temporarily It can be stored in parcel tray, improve the drawing speed of painter so that people access more convenient when painting utensil.
3, the function plotting equipment of the Art Design, by the way that electric pushrod and support plate is arranged, when needing to increase picture table Height when, people can control electric pushrod work so that electric pushrod elongation drive support plate move up so that support Strip animation table and paper move up so that the height of the more convenient adjusting picture table of painter, and structure of the invention is compact, Reasonable design, it is highly practical.
Description of the drawings
Fig. 1 is the cross-sectional view that the present invention faces;
Fig. 2 is the structural schematic diagram that the present invention overlooks;
Fig. 3 is the structural schematic diagram amplified at A of the present invention.
In figure:1 bottom plate, 2 electric pushrods, 3 parcel trays, 4 handles, 5 drawers, 6 first rotating devices, 61 first bearings, 62 First rotating shaft, 7 draw tables, 8 first grooves, 9 second grooves, 10 card slots, 11 third grooves, 12 fixture blocks, 13 second rotating devices, 131 second bearings, 132 second shafts, 14 pressing plates, 15 rubber blocks, 16 blocks, 17 power supplys, 18 switches, 19 the 4th grooves, 20 Three bearings, 21 third shafts, 22 support plates, 23 connecting rods, 24 axis pins, 25 fixed blocks, 26 springs.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
As shown in Figs. 1-3, the present invention provides a kind of technical solution:A kind of function plotting equipment of Art Design, including Bottom plate 1, the upper surface of bottom plate 1 are fixedly connected with that there are four electric pushrod 2, the lower surfaces on the top and support plate 22 of electric pushrod 2 It is fixedly connected, by the way that electric pushrod 2 is arranged, when needing to increase the height of picture table 7, people can control the work of electric pushrod 2, So that the elongation of electric pushrod 2 drives support plate 22 to move up so that support plate 22 is moved up with animation table 7 and paper, is made The more convenient height for adjusting picture table 7 of painter is obtained, the front of support plate 22 is fixedly connected with the back side of power supply 17, power supply 17 Front be fixedly connected with the back side of switch 18, pass through be arranged power supply 17 so that power supply 17 can give electric pushrod 2 power supply, make Obtaining electric pushrod 2 can work normally, and the output end of power supply 17 is electrically connected by conducting wire with the input terminal of switch 18, switch 18 Output end is electrically connected by conducting wire with the input terminal of electric pushrod 2, by the way that switch 18 is arranged so that the more convenient control of people Electric pushrod 2 works, and the left side of support plate 22 offers the first groove 8, drawer 5 is provided in the first groove 8, drawer 5 Left side is fixedly connected with handle 4, and the front of support plate 22 is opened up there are two the second groove 9, by the way that handle 4 and drawer 5 is arranged, When people need using painting utensil, painting utensil can be taken out by extraction drawer 5 and painted, and two the second grooves 9 are located at the left side of the 4th groove 19, and the 4th groove 19 is opened in the front of support plate 22, the lower surface clamping of support plate 22 There is 3rd bearing 20, by the way that the 4th groove 19 is arranged, can be taken out out of the 4th groove 19 when painter needs using ruler makes With being socketed with third shaft 21 in 3rd bearing 20, the bottom end of third shaft 21 is fixed with the lower surface of 3 inner wall of parcel tray to be connected It connects, the upper surface of support plate 22 is connected with the first rotating device 6, and the first rotating device 6 includes first bearing 61, first bearing 61 Quantity be two, and the same first rotating shaft 62, the outer surface of first rotating shaft 62 and picture are socketed in two first bearings 61 The left side of table 7 is fixedly connected, by the way that first rotating shaft 62 is arranged, more convenient, the first rotating device when painter's rotary picture table 7 6 outer surface is fixedly connected with the left side for drawing table 7, and the right side for drawing table 7 is fixedly connected there are two block 16.
The upper surface of block 16 is fixedly connected by spring 26 with the lower surface of pressing plate 14, by the way that spring 26 is arranged so that The tension band dynamic pressure plate 14 of spring 26 rotates so that pressing plate 14 drives rubber block 15 to rotate so that and rubber block 15 is contacted with paper, Paper is compressed, the lower surface of pressing plate 14 is fixedly connected with rubber block 15, and the lower surface of rubber block 15 is taken with the upper surface for drawing table 7 It connects, by the way that rubber block 15 is arranged so that paper will not be damaged when rubber block 15 compresses paper, and the lower surface of pressing plate 14 is fixedly connected There are fixed block 25, the back side of fixed block 25 to be flexibly connected with one end of connecting rod 23 by axis pin 24, the other end of connecting rod 23 It is fixedly connected with the upper surface of block 16.
The lower surface for drawing table 7 offers several card slots 10, and by the way that fixture block 12 and card slot 10 is arranged, people overturn picture table 7, After adjusting the angle of picture table 7, people lift fixture block 12, and fixture block 12 is caught in card slot 10 so that draw table 7 and paper is in Heeling condition so that painter is more convenient when adjusting the angle, and card slot 10 is located at the top of third groove 11, and third groove 11 is opened It is located at the upper surface of support plate 22, the right side of 11 inner wall of third groove is connected with the second rotating device 13, by the way that storing is arranged Box 3 needs painting utensil to be used that can be taken out out of parcel tray 3, after draw tool use temporarily when people paint again When can be stored in parcel tray 3, improve the drawing speed of painter so that it is more convenient when painting utensil that people access, Second rotating device 13 includes second bearing 131, and the quantity of second bearing 131 is two, and socket in two second bearings 131 There are same second shaft 132, the outer surface of the second shaft 132 to be fixedly connected with the right side of fixture block 12, third rotating device Outer surface be fixedly connected with the right side of fixture block 12.
In use, when people need using the drawing device, people are manually pressed by pressing plate 14 first, then paper is placed on It draws on table 7, unclamps pressing plate 14 so that the tension band dynamic pressure plate 14 of spring 26 rotates so that pressing plate 14 drives rubber block 15 to rotate, So that rubber block 15 is contacted with paper, paper is compressed, people overturn picture table 7, and after adjusting the angle of picture table 7, people lift Fixture block 12 is caught in card slot 10 by fixture block 12 so that draws table 7 and paper is in heeling condition, when people need to use using drawing When tool, painting utensil can be taken out by extraction drawer 5 and painted, need to take out out of the 4th groove 19 using when ruler It uses, which not only can also adjust the angle of picture table 7 by some Tool integrations, when people paint again, need Painting utensil to be used can take out out of parcel tray 3, and parcel tray 3 can be temporarily stored in after draw tool use It is interior, improve the drawing speed of painter so that it is more convenient when painting utensil that people access, when the height for needing raising picture table 7 When spending, people can control the work of electric pushrod 2 so that the elongation of electric pushrod 2 drives support plate 22 to move up so that support Plate 22 is moved up with animation table 7 and paper so that the more convenient height for adjusting picture table 7 of painter.
Can to sum up obtain, 1, the function plotting equipment of the Art Design, by be arranged first rotating shaft 62, first bearing 61, Draw table 7, card slot 10, fixture block 12, pressing plate 14, rubber block 15, axis pin 24, connecting rod 23, block 16, spring 26, parcel tray 3, the Four grooves 19 and the second groove 9, when people need using the drawing device, people first are manually pressed by pressing plate 14, then by paper It opens and is placed on picture table 7, unclamp pressing plate 14 so that the tension band dynamic pressure plate 14 of spring 26 rotates so that pressing plate 14 drives rubber block 15 rotations so that rubber block 15 is contacted with paper, compresses paper, and people overturn picture table 7, after adjusting the angle of picture table 7, people Lift fixture block 12, fixture block 12 is caught in card slot 10 so that draw table 7 and paper and be in heeling condition, when people need to use When painting utensil, painting utensil can be taken out by extraction drawer 5 and painted, it can be from the 4th groove 19 when needing using ruler Interior taking-up uses, which not only can also adjust the angle of picture table 7 so that Ren Menhui by some Tool integrations It is more convenient when picture.
2, the function plotting equipment of the Art Design, by the way that third shaft 21,3rd bearing 20,22 and of support plate is arranged Parcel tray 3 needs painting utensil to be used that can be taken out out of parcel tray 3, draw tool use finishes when people paint again It can temporarily be stored in parcel tray 3 afterwards, improve the drawing speed of painter so that when people's access painting utensil more just Profit.
3, the function plotting equipment of the Art Design, by the way that electric pushrod 2 and support plate 22 is arranged, when needing to increase picture When the height of table 7, people can control the work of electric pushrod 2 so that and the elongation of electric pushrod 2 drives support plate 22 to move up, So that support plate 22 is moved up with animation table 7 and paper so that the more convenient height for adjusting picture table 7 of painter, and this Inventive structure is compact, reasonable design, highly practical.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace And modification, the scope of the present invention is defined by the appended.

Claims (6)

1. a kind of function plotting equipment of Art Design, including bottom plate (1), it is characterised in that:The upper surface of the bottom plate (1) It being fixedly connected there are four electric pushrod (2), the top of the electric pushrod (2) is fixedly connected with the lower surface of support plate (22), The upper surface of the support plate (22) is connected with the first rotating device (6), outer surface and the picture table of first rotating device (6) (7) left side is fixedly connected, and the right side for drawing table (7) is fixedly connected there are two block (16);
The upper surface of the block (16) is fixedly connected by spring (26) with the lower surface of pressing plate (14), the pressing plate (14) Lower surface is fixedly connected with rubber block (15), and the lower surface of the rubber block (15) is overlapped with the upper surface for drawing table (7), the pressure The lower surface of plate (14) is fixedly connected with fixed block (25), and the back side of the fixed block (25) passes through axis pin (24) and connecting rod (23) one end flexible connection, the other end of the connecting rod (23) are fixedly connected with the upper surface of block (16);
The lower surface for drawing table (7) offers several card slots (10), and the card slot (10) is located at the upper of third groove (11) Side, the third groove (11) are opened in the upper surface of support plate (22), the right side clamping of third groove (11) inner wall There are the second rotating device (13), the outer surface of the third rotating device to be fixedly connected with the right side of fixture block (12).
2. a kind of function plotting equipment of Art Design according to claim 1, it is characterised in that:The support plate (22) left side offers the first groove (8), and drawer (5), a left side for the drawer (5) are provided in first groove (8) Side is fixedly connected with handle (4), and the front of the support plate (22) is opened up there are two the second groove (9), and two second recessed Slot (9) is located at the left side of the 4th groove (19), and the 4th groove (19) is opened in the front of support plate (22), the branch The lower surface of fagging (22) is connected with 3rd bearing (20), and third shaft (21) is socketed in the 3rd bearing (20), described The bottom end of third shaft (21) is fixedly connected with the lower surface of parcel tray (3) inner wall.
3. a kind of function plotting equipment of Art Design according to claim 1, it is characterised in that:First rotation Device (6) includes first bearing (61), and the quantity of the first bearing (61) is two, and socket in two first bearings (61) There are the same first rotating shaft (62), the outer surface of the first rotating shaft (62) to be fixedly connected with the left side for drawing table (7).
4. a kind of function plotting equipment of Art Design according to claim 1, it is characterised in that:Second rotation Device (13) includes second bearing (131), and the quantity of the second bearing (131) is two, and in two second bearings (131) It is socketed with same second shaft (132), the outer surface of second shaft (132) is fixed with the right side of fixture block (12) to be connected It connects.
5. a kind of function plotting equipment of Art Design according to claim 1, it is characterised in that:The support plate (22) front is fixedly connected with the back side of power supply (17), and the front of the power supply (17) is fixed with the back side of switch (18) to be connected It connects.
6. a kind of function plotting equipment of Art Design according to claim 5, it is characterised in that:The power supply (17) Output end by conducting wire with switch (18) input terminal be electrically connected, it is described switch (18) output end pushed away with electronic by conducting wire The input terminal of bar (2) is electrically connected.
CN201810429558.XA 2018-05-08 2018-05-08 A kind of function plotting equipment of Art Design Pending CN108577198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810429558.XA CN108577198A (en) 2018-05-08 2018-05-08 A kind of function plotting equipment of Art Design

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810429558.XA CN108577198A (en) 2018-05-08 2018-05-08 A kind of function plotting equipment of Art Design

Publications (1)

Publication Number Publication Date
CN108577198A true CN108577198A (en) 2018-09-28

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ID=63635743

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810429558.XA Pending CN108577198A (en) 2018-05-08 2018-05-08 A kind of function plotting equipment of Art Design

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Country Link
CN (1) CN108577198A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109619826A (en) * 2018-11-30 2019-04-16 冯萍 A kind of integrated form authoring platform based on Art Design
CN110154627A (en) * 2019-05-28 2019-08-23 张莹 Multifunctional painting articles storage device
CN110200408A (en) * 2019-05-15 2019-09-06 蒋小娟 A kind of novel portable artistic design profession drawing tables
CN115413884A (en) * 2022-09-05 2022-12-02 于士洋 Finance economy situational analysis figure drawing device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5845889A (en) * 1997-07-09 1998-12-08 Hiromori Inc. Paper clip
CN201308304Y (en) * 2008-12-12 2009-09-16 周家辉 Student chair with rotary storage box
CN202233906U (en) * 2011-10-23 2012-05-30 刘兰 Supporting bracket for Chinese teaching
CN205913119U (en) * 2016-06-12 2017-02-01 边颖 Drawing instrument
CN206242793U (en) * 2016-11-30 2017-06-13 榆林学院 A kind of portable folding fine arts drawing board
CN206324442U (en) * 2016-08-01 2017-07-14 安徽商贸职业技术学院 The animation desk that a kind of height can be adjusted
CN107738454A (en) * 2017-11-09 2018-02-27 江门市康百事电器有限公司 A kind of bonding tool of bread producing machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5845889A (en) * 1997-07-09 1998-12-08 Hiromori Inc. Paper clip
CN201308304Y (en) * 2008-12-12 2009-09-16 周家辉 Student chair with rotary storage box
CN202233906U (en) * 2011-10-23 2012-05-30 刘兰 Supporting bracket for Chinese teaching
CN205913119U (en) * 2016-06-12 2017-02-01 边颖 Drawing instrument
CN206324442U (en) * 2016-08-01 2017-07-14 安徽商贸职业技术学院 The animation desk that a kind of height can be adjusted
CN206242793U (en) * 2016-11-30 2017-06-13 榆林学院 A kind of portable folding fine arts drawing board
CN107738454A (en) * 2017-11-09 2018-02-27 江门市康百事电器有限公司 A kind of bonding tool of bread producing machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109619826A (en) * 2018-11-30 2019-04-16 冯萍 A kind of integrated form authoring platform based on Art Design
CN110200408A (en) * 2019-05-15 2019-09-06 蒋小娟 A kind of novel portable artistic design profession drawing tables
CN110154627A (en) * 2019-05-28 2019-08-23 张莹 Multifunctional painting articles storage device
CN115413884A (en) * 2022-09-05 2022-12-02 于士洋 Finance economy situational analysis figure drawing device
CN115413884B (en) * 2022-09-05 2023-08-18 于士洋 Financial economic situation analysis graph drawing device

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Application publication date: 20180928