CN114734749A - Portable economic management learns drawing board - Google Patents

Portable economic management learns drawing board Download PDF

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Publication number
CN114734749A
CN114734749A CN202210484412.1A CN202210484412A CN114734749A CN 114734749 A CN114734749 A CN 114734749A CN 202210484412 A CN202210484412 A CN 202210484412A CN 114734749 A CN114734749 A CN 114734749A
Authority
CN
China
Prior art keywords
sliding
cloth
economic management
plate body
drawing board
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.)
Granted
Application number
CN202210484412.1A
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Chinese (zh)
Other versions
CN114734749B (en
Inventor
苏玉
韩妮娜
徐兆兵
代美丽
徐晓鲁
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Rizhao Polytechnic
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Rizhao Polytechnic
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Priority to CN202210484412.1A priority Critical patent/CN114734749B/en
Publication of CN114734749A publication Critical patent/CN114734749A/en
Application granted granted Critical
Publication of CN114734749B publication Critical patent/CN114734749B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L5/00Drawing boards
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00Circular curve-drawing or like instruments
    • B43L9/02Compasses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00Circular curve-drawing or like instruments
    • B43L9/16Features common to compasses, dividers, and callipers
    • B43L9/24Means for mounting points or writing appliances on legs

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  • Drawing Aids And Blackboards (AREA)

Abstract

The invention discloses a movable drawing board for economic management, which comprises a movable wheel, a telescopic supporting leg, a bottom plate and a drawing mechanism, wherein the movable wheel is fixedly arranged at the bottom of the telescopic supporting leg, the lower end of shielding cloth is pulled to enable a winding disc to unreel the shielding cloth, a sliding shaft at the lower end of the shielding cloth slides downwards and stably in a sliding groove, and is clamped into a supporting plate through a clamping rod on the sliding shaft, so that the shielding cloth shields the outer side surface of a white board mechanism, the drawing definition on the white board mechanism is prevented from being influenced by dust, in the process of drawing a circle, the inner side of a lifting slide block slides annularly through a connecting rod and a rotating block, so that a color pen is ensured to draw an accurate circle, a pulley at the inner side of a guide groove plays a role in data positioning, and data positioning is carried out through a scale bar on a guide rail, so that a complete disc type statistical graph and a column graph in the economic management are accurately drawn, and the intuitiveness of data analysis in the teaching process is improved.

Description

Portable economic management learns drawing board
Technical Field
The invention relates to the field of economic management, in particular to a mobile economic management drawing board.
Background
The economics includes the macro-economics and the micro-economics, and the macro-economics focuses more on the theoretical explanation, more attention is paid to the application of a management method in the application of microcosmic economy, a drawing board is often used for drawing and analyzing data in the teaching process of the economic management, however, in the process of drawing data on the drawing board, the color pen generates a certain friction with the surface of the drawing board, so that the drawing board is easy to perform electrostatic adsorption on dust in the surrounding environment, and the color of the drawing board is white, the dust is adsorbed on the surface of the drawing board, the drawing data on the drawing board causes certain definition of watching, need draw data statistics contrastive analysis's picture on the drawing board simultaneously, and the colored pen is difficult to carry out accurate drawing with circular statistical chart and histogram on the drawing board, has reduced the drawing board and has carried out data analysis's intuitionistic to economic management science.
Disclosure of Invention
The technical scheme adopted by the invention for realizing the technical purpose is as follows: this portable drawing board for economic management science, its structure is including removing wheel, flexible landing leg, bottom plate, drawing mechanism, it is in flexible landing leg bottom to remove wheel fixed mounting to flexible landing leg top welds in the bottom plate bottom, and the bottom plate up end is fixed with the drawing mechanism bottom, drawing mechanism is including sheltering from mechanism, slide mechanism, blank mechanism, shelter from the mechanism and be located blank mechanism outside surface to the blank mechanism outside is equipped with slide mechanism, shelter from the mechanism outside and be connected with the slide mechanism inboard.
As a further improvement of the invention, the shielding mechanism comprises shielding cloth, a winding disc and a spring piece, the upper end of the shielding cloth is wound outside the winding disc, the lower end of the shielding cloth is connected with the inner side of the sliding mechanism, the spring piece is arranged inside the winding disc, the shielding cloth is positioned on the outer side surface of the white board mechanism, the lower end of the shielding cloth is abutted against the upper end surface of the bottom plate, and the spring piece is of a spiral structure and arranged at the axis inside the winding disc and can provide reset elasticity for automatic winding of the winding disc.
The sliding mechanism comprises a supporting plate, a sliding groove, two sliding shafts and two clamping rods, wherein the supporting plate is welded on the outer side of the white board mechanism, the sliding groove is embedded in the supporting plate, the sliding shafts are slidably mounted in the sliding groove and fixedly mounted at the other end of the shielding cloth, the sliding shafts are hinged to one end of each clamping rod, the other end of each clamping rod is mounted in the supporting plate in a clamping mode, the supporting plate is welded on the upper end face of the bottom plate, the two supporting plates, the two sliding grooves, the two sliding shafts and the two clamping rods are symmetrically mounted on the outer side of the white board mechanism in a left-right mode, and the two sliding shafts are arranged on two sides of the lower end of the shielding cloth respectively.
As a further improvement of the invention, the white board mechanism comprises a board body, a circle drawing mechanism and a columnar mechanism, wherein the bottom of the board body is fixed with the upper end surface of the bottom board, the circle drawing mechanism is arranged on the left side of the front end surface of the board body, the columnar mechanism is arranged on the right side of the front end surface of the board body, the outer side of the board body is fixed with the supporting board, and the shielding cloth is positioned on the outer side surface of the board body.
As a further improvement of the invention, the circle drawing mechanism comprises a lifting slider, a rotating block, a connecting rod and a pen cap mechanism, wherein the lifting slider is slidably arranged on the left side of the front end face of the plate body, the rotating block is arranged in the lifting slider in a clearance fit manner, the rotating block is fixedly arranged at the upper end of the connecting rod, the pen cap mechanism is arranged at the lower end of the connecting rod, an annular sliding groove is also formed in the lifting slider, and the rotating block is slidably arranged in the annular sliding groove in the lifting slider.
As a further improvement of the invention, the pen cap mechanism comprises a lantern ring, a top spring and a contact sheet, the upper end of the outer side of the lantern ring is fixed with the lower end of the connecting rod, the top spring is arranged on the inner side of the lantern ring, the top spring is fixed with the outer side of the contact sheet, the contact sheet is positioned on the inner side of the lantern ring, and the top spring and the contact sheet are respectively provided with four parts and are arranged on the inner side of the lantern ring in four directions.
As a further improvement of the invention, the columnar mechanism comprises a guide rail, a pushing block, a guide groove, pulleys and scale bars, wherein the guide rail is arranged on the right side of the front end face of the plate body, the pushing block is slidably arranged on the outer side of the guide rail, the lower end of the guide groove is fixed with the upper end of the pushing block, the pulleys are arranged in the guide groove in a clearance fit manner, the scale bars are arranged at the upper end of the guide rail, the guide groove is vertically arranged on the upper end face of the pushing block, eighteen pulleys are arranged in the guide groove, every two pulleys are distributed in a group in a left-right mode, and the distances between the pulleys in each group are equal.
The invention has the beneficial effects that:
1. the pulling shelters from the cloth lower extreme for the rolling dish unreels sheltering from the cloth, and at this moment shelters from the sliding shaft of cloth lower extreme and carries out steady down sliding in the sliding tray inside, and inside the fagging was gone into through the epaxial block pole card of sliding at last, the lower extreme that will shelter from the cloth exerted traction force, ensures to shelter from the cloth and shelters from white board mechanism outside surface, avoids the dust to adsorb on white board mechanism outside surface, prevents that the dust from influencing the drawing definition on the white board mechanism.
2. The in-process of drawing a circle carries out the annular through the connection of connecting rod and turning block in the lifting slide inboard and slides, thereby ensure that the crayon draws accurate circular, go into the inside back of guide way through the crayon card simultaneously, up remove along the guide way inside, thereby draw the vertical straight line of histogram, the inboard pulley of guide way plays the effect of data location simultaneously, after that carry out lateral sliding on the guide rail through advancing the piece, draw horizontal straight line, carry out data location through the scale strip on the guide rail, thereby accurate draw complete disc type statistical chart and histogram among the economic management science, improve the intuition that carries out data analysis among the teaching process.
Drawings
Fig. 1 is a schematic structural diagram of a mobile economic management drawing board according to the present invention.
FIG. 2 is a schematic side view of a drawing mechanism according to the present invention.
FIG. 3 is a schematic view of a shielding mechanism and a partially enlarged structure according to the present invention.
Fig. 4 is a partial structural schematic diagram of a sliding mechanism according to the present invention.
Fig. 5 is a schematic structural diagram of a whiteboard mechanism according to the present invention.
FIG. 6 is a schematic diagram of an internal structure of a circle drawing mechanism according to the present invention.
Fig. 7 is a schematic view of an internal structure of a pen cap mechanism according to the present invention.
FIG. 8 is a schematic structural diagram of a pillar-shaped mechanism according to the present invention.
In the figure: the device comprises a moving wheel-Y, a telescopic supporting leg-S, a bottom plate-D, a drawing mechanism-H, a shielding mechanism-H5, a sliding mechanism-H8, a white board mechanism-H2, shielding cloth-H52, a winding disc-H55, a spring piece-H59, a supporting plate-H85, a sliding groove-H88, a sliding shaft-H83, a clamping rod-H86, a board body-H28, a circle drawing mechanism-H24, a columnar mechanism-H26, a lifting slider-4 x, a rotating block-4 r, a connecting rod-4Y, a pen cap mechanism-4 b, a lantern ring-b 5, a top spring-b 8, a collision sheet-b 1, a guide rail-69, a pushing block-65, a guide groove-67, a pulley-61 and a scale bar-69.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example 1:
as shown in figures 1 to 4:
the invention relates to a movable drawing board for economic management, which structurally comprises a movable wheel Y, a telescopic supporting leg S, a bottom plate D and a drawing mechanism H, wherein the movable wheel Y is fixedly arranged at the bottom of the telescopic supporting leg S, the top of the telescopic supporting leg S is welded at the bottom of the bottom plate D, the upper end surface of the bottom plate D is fixed with the bottom of the drawing mechanism H, the drawing mechanism H comprises a shielding mechanism H5, a sliding mechanism H8 and a white board mechanism H2, the shielding mechanism H5 is positioned on the outer side surface of the white board mechanism H2, the sliding mechanism H8 is arranged on the outer side of the white board mechanism H2, and the outer side of the shielding mechanism H5 is connected with the inner side of the sliding mechanism H8.
Wherein, it includes shielding cloth h52, rolling dish h55, spring leaf h59 to shelter from mechanism h5, shielding cloth h52 upper end winding and rolling dish h55 outside to shielding cloth h52 lower extreme is connected with sliding mechanism h8 is inboard, rolling dish h55 inside is equipped with spring leaf h59, shielding cloth h52 is located whiteboard mechanism h2 outside surface, shielding cloth h52 lower extreme and bottom plate D up end are inconsistent, spring leaf h59 is helical structure to establish in the inside axle center department of rolling dish h55, can provide the elasticity that resets of automatic rolling for rolling dish h55, thereby make rolling dish h55 carry out automatic unreeling with shielding cloth h52, make shielding cloth h52 can shelter from at whiteboard mechanism h2 outside surface, reduce the dust and adsorb at whiteboard mechanism h2 surface.
Wherein the sliding mechanism h8 comprises a bracing plate h85, a sliding groove h88, a sliding shaft h83 and a clamping rod h86, the bracing plate h85 is welded on the outer side of the white board mechanism h2, and a sliding groove h88 is embedded at the inner side of the bracing plate h85, the sliding shaft h83 is slidably arranged in the sliding groove h88, and the sliding shaft h83 is fixedly arranged at the other end of the shielding cloth h52, the sliding shaft h83 is hinged with one end of the clamping rod h86, the other end of the clamping rod h86 is clamped and installed in the bracing plate h85, the bracing plate h85 is welded on the upper end surface of the bottom plate D, two supporting plates h85, two sliding grooves h88, two sliding shafts h83 and two clamping rods h86 are arranged, and are arranged at the outer side of the white board mechanism h2 in a left-right symmetry manner, two sliding shafts h83 are respectively arranged at the two sides of the lower end of the shielding cloth h52, so that the shade cloth h52 can smoothly move up and down along the inner side of the stay plate h85, thereby making the white board mechanism h2 appear and shade.
The specific use mode and function of the embodiment are as follows:
in the invention, in the process of economic management teaching, drawing needs to be carried out on a white board mechanism h2 so as to show data, one end of a clamping rod h86 is pulled to be separated from the inside of a supporting plate h85 in the drawing process, and the traction force at the lower end of a shielding cloth h52 disappears, so that a spring leaf h59 exerts resetting elasticity on the axis inside a winding disc h55, the winding disc h55 winds the shielding cloth h52, and sliding shafts h83 on two sides of the lower end of the shielding cloth h52 slide upwards stably in a sliding groove h88, so that the shielding cloth h52 is stably pulled up on the outer side surface of the white board mechanism h2, the white board mechanism h2 is displayed, and drawing teaching can be carried out on the white board mechanism h 2; otherwise the pulling hides cloth h52 lower extreme, make rolling dish h55 unreel sheltering from cloth h52, slide shaft h83 that at this moment shelters from cloth h52 lower extreme carries out steady downward slip in sliding tray h88 is inside, go into fagging h85 inside through the block pole h86 card on the slide shaft h83 at last, the lower extreme that will hide cloth h52 is exerted traction force, it shelters from to guarantee to hide cloth h52 white board mechanism h2 outside surface, avoid the dust to adsorb at white board mechanism h2 outside surface, prevent that the drawing definition on the dust influence white board mechanism h 2.
Example 2:
as shown in figures 5 to 8:
wherein, whiteboard mechanism h2 includes plate body h28, circle of drawing mechanism h24, column mechanism h26, plate body h28 bottom is fixed mutually with bottom plate D up end, circle of drawing mechanism h24 establishes terminal surface left side before plate body h28 to column mechanism h26 establishes terminal surface right side before plate body h28, the plate body h28 outside is fixed mutually with fagging h85, it is located plate body h28 outside surface to hide cloth h 52.
Wherein, circle drawing mechanism h24 includes lift slider 4x, turning block 4r, connecting rod 4y, pen socket mechanism 4b, lift slider 4x slidable mounting is on the left of the preceding terminal surface of plate body h28 to turning block 4r adopts clearance fit to install inside lift slider 4x, turning block 4r fixed mounting is in connecting rod 4y upper end, connecting rod 4y lower extreme is equipped with pen socket mechanism 4b, lift slider 4x inside still is equipped with annular sliding tray to turning block 4r slidable mounting is inside at the inside annular sliding tray of lift slider 4x, thereby ensures that turning block 4r drives connecting rod 4y and carries out the circumferential rotation, thereby draws out the statistics drawing excircle of disc type on plate body h28 surface.
The pen cap mechanism 4b comprises a lantern ring b5, a top spring b8 and a collision sheet b1, the upper end of the outer side of the lantern ring b5 is fixed with the lower end of the connecting rod 4y, the top spring b8 is arranged on the inner side of the lantern ring b5, the top spring b8 is fixed with the outer side of the collision sheet b1, the collision sheet b1 is located on the inner side of the lantern ring b5, the top spring b8 and the collision sheet b1 are four in number and are arranged on the inner side of the lantern ring b5 in four directions, the outer side of the crayon is tightly collided through the collision sheet b1, so that the crayon is firmly clamped inside the lantern ring b5, and the lantern ring b5 is ensured to drive the crayon to perform smooth circle drawing.
Wherein the columnar mechanism h26 comprises a guide rail 69, a pushing block 65, a guide groove 67, a pulley 61 and a scale bar 69, the guide rail 69 is arranged on the right side of the front end face of the plate body h28, the pushing block 65 is arranged outside the guide rail 69 in a sliding way, the lower end of the guide groove 67 is fixed with the upper end of the pushing block 65, the pulley 61 is arranged in a guide groove 67 in a clearance fit manner, the scale bar 69 is arranged at the upper end of the guide rail 69, the guide groove 67 is vertically and vertically arranged on the upper end surface of the pushing block 65, and eighteen pulleys 61 are arranged in the guide groove 67, every two pulleys 61 are distributed in a group in the left and right direction, and the distance between the pulleys 61 of each group is equal, the data of the vertical straight line is positioned through the pulleys 61, meanwhile, the horizontal data are positioned through the scale bars 69 on the guide rails 69, a complete histogram is drawn, and the intuitiveness of data analysis in teaching is improved.
The specific use mode and function of the embodiment are as follows:
in the invention, in the drawing process, a disc-shaped statistical chart and a histogram are generally used for teaching and analyzing data, when the disc-shaped statistical chart is drawn, a colored pen is clamped in the lantern ring b5, the abutting contact piece b1 is applied with elasticity through the abutting spring b8, so that the abutting contact piece b1 tightly abuts against the outer side surface of the colored pen, the colored pen is firmly installed in the lantern ring b5, the lifting slide block 4x slides upwards on the front end surface of the plate body h28, then the colored pen is used for drawing a circle, in the circle drawing process, the colored pen is ensured to draw a precise circle through the connection of the connecting rod 4y and the annular sliding of the rotating block 4r on the inner side of the lifting slide block 4x, so that the data proportion intuitiveness of the disc-shaped statistical chart is improved, and meanwhile, after the colored pen is clamped in the guide groove 67, the colored pen moves upwards along the inner part of the guide groove 67, so that a vertical straight line of the histogram is drawn, meanwhile, the pulley 61 on the inner side of the guide groove 67 plays a data positioning role, when the color pen is in contact with the pulley 61, a fixed point is pointed out, then the color pen slides transversely on the guide rail 69 through the pushing block 65, a transverse straight line is drawn, and data positioning is carried out through the scale bars 69 on the guide rail 69, so that a complete disc type statistical graph and a histogram in economic management are accurately drawn, and the intuitiveness of data analysis in the teaching process is improved.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.

Claims (7)

1. The utility model provides a portable drawing board in economic management science, its structure is including removing wheel (Y), flexible landing leg (S), bottom plate (D), drawing mechanism (H), remove wheel (Y) fixed mounting in flexible landing leg (S) bottom to flexible landing leg (S) top welds in bottom plate (D) bottom, and bottom plate (D) up end is fixed its characterized in that with drawing mechanism (H) bottom:
drawing mechanism (H) is including sheltering from mechanism (H5), sliding mechanism (H8), blank mechanism (H2), shelter from mechanism (H5) and be located blank mechanism (H2) outside surface to blank mechanism (H2) outside is equipped with sliding mechanism (H8), shelter from the mechanism (H5) outside and sliding mechanism (H8) inboard is connected.
2. The mobile economic management drawing board of claim 1, wherein: shelter from mechanism (h 5) including sheltering from cloth (h 52), rolling dish (h 55), spring leaf (h 59), shelter from cloth (h 52) upper end winding and rolling dish (h 55) outside to shelter from cloth (h 52) lower extreme and slide mechanism (h 8) inboard and be connected, rolling dish (h 55) inside is equipped with spring leaf (h 59), shelter from cloth (h 52) and be located whiteboard mechanism (h 2) outside surface, shelter from cloth (h 52) lower extreme and bottom plate (D) up end inconsistent.
3. The mobile drawing board for economic management of claim 2, wherein: slide mechanism (h 8) include fagging (h 85), sliding tray (h 88), sliding shaft (h 83), block pole (h 86), fagging (h 85) weld in whiteboard mechanism (h 2) outside to sliding tray (h 85) inboard has inlayed sliding tray (h 88), sliding shaft (h 83) slidable mounting is inside sliding tray (h 88) to sliding shaft (h 83) fixed mounting hides cloth (h 52) other end, sliding shaft (h 83) are articulated mutually with block pole (h 86) one end, and block pole (h 86) other end block is installed inside fagging (h 85), fagging (h 85) weld in bottom plate (D) up end.
4. A mobile economic management drawing board according to claim 3, wherein: whiteboard mechanism (h 2) is including plate body (h 28), circle of drawing mechanism (h 24), column mechanism (h 26), plate body (h 28) bottom is fixed mutually with bottom plate (D) up end, circle of drawing mechanism (h 24) establishes terminal surface left side before plate body (h 28) to column mechanism (h 26) establishes terminal surface right side before plate body (h 28), the plate body (h 28) outside is fixed mutually with fagging (h 85), it is located plate body (h 28) outside surface to hide cloth (h 52).
5. The mobile drawing board for economic management of claim 4, wherein: circle drawing mechanism (h 24) includes elevator slide (4 x), turning block (4 r), connecting rod (4 y), pen socket mechanism (4 b), elevator slide (4 x) slidable mounting is in the terminal surface left side before plate body (h 28) to turning block (4 r) adopt clearance fit to install inside elevator slide (4 x), turning block (4 r) fixed mounting is in connecting rod (4 y) upper end, connecting rod (4 y) lower extreme is equipped with pen socket mechanism (4 b).
6. The mobile economic management drawing board of claim 5, wherein: the pen cap mechanism (4 b) comprises a lantern ring (b 5), a top spring (b 8) and a collision sheet (b 1), the upper end of the outer side of the lantern ring (b 5) is fixed with the lower end of the connecting rod (4 y), the top spring (b 8) is arranged on the inner side of the lantern ring (b 5), the top spring (b 8) is fixed with the outer side of the collision sheet (b 1), and the collision sheet (b 1) is located on the inner side of the lantern ring (b 5).
7. The mobile drawing board for economic management of claim 4, wherein: columnar mechanism (h 26) is including guide rail (69), lapse piece (65), guide way (67), pulley (61), scale bar (69), establish on plate body (h 28) preceding terminal surface right side guide rail (69) to lapse piece (65) slidable mounting in the guide rail (69) outside, guide way (67) lower extreme is fixed mutually with lapse piece (65) upper end, pulley (61) adopt clearance fit to install inside guide way (67), scale bar (69) are established in guide rail (69) upper end.
CN202210484412.1A 2022-05-06 2022-05-06 Portable economic management drawing board Active CN114734749B (en)

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Application Number Priority Date Filing Date Title
CN202210484412.1A CN114734749B (en) 2022-05-06 2022-05-06 Portable economic management drawing board

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Application Number Priority Date Filing Date Title
CN202210484412.1A CN114734749B (en) 2022-05-06 2022-05-06 Portable economic management drawing board

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CN114734749B CN114734749B (en) 2023-06-06

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220661A (en) * 1963-04-25 1965-11-30 Hegedus Gabor Protective cover for drawing-boards and the like
FR2539601A1 (en) * 1983-01-20 1984-07-27 Wild Leitz France Device for protecting a drawing table
EP0399963A1 (en) * 1989-05-24 1990-11-28 I.T.O. di TRASPADINI Gianluigi Roller blind for drawing table
CN205468110U (en) * 2016-03-11 2016-08-17 萍乡学院 Portable economic management learns drawing board
CN206141172U (en) * 2016-07-22 2017-05-03 温州芳植生物科技有限公司 Special drawing board of finance economy
CN214267194U (en) * 2021-02-03 2021-09-24 刘艳 Drawing device for building structure design

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220661A (en) * 1963-04-25 1965-11-30 Hegedus Gabor Protective cover for drawing-boards and the like
FR2539601A1 (en) * 1983-01-20 1984-07-27 Wild Leitz France Device for protecting a drawing table
EP0399963A1 (en) * 1989-05-24 1990-11-28 I.T.O. di TRASPADINI Gianluigi Roller blind for drawing table
CN205468110U (en) * 2016-03-11 2016-08-17 萍乡学院 Portable economic management learns drawing board
CN206141172U (en) * 2016-07-22 2017-05-03 温州芳植生物科技有限公司 Special drawing board of finance economy
CN214267194U (en) * 2021-02-03 2021-09-24 刘艳 Drawing device for building structure design

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