CN113103806A - Device is drawn with portable curve to mathematical education - Google Patents
Device is drawn with portable curve to mathematical education Download PDFInfo
- Publication number
- CN113103806A CN113103806A CN202110480722.1A CN202110480722A CN113103806A CN 113103806 A CN113103806 A CN 113103806A CN 202110480722 A CN202110480722 A CN 202110480722A CN 113103806 A CN113103806 A CN 113103806A
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- CN
- China
- Prior art keywords
- negative pressure
- axle
- rod
- mathematical education
- piston
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/04—Braking mechanisms; Locking devices against movement
- B62B5/049—Braking mechanisms; Locking devices against movement locking against movement by contacting the floor or a wall
Abstract
The invention discloses a movable curve drawing device for mathematical teaching, which structurally comprises a movable wheel, a stand column, an installation shaft, a frame, a white board, an X shaft, a Y shaft, a locking nut, a scale, a switch, a fixed foot and a reinforcing rod, wherein the white board is connected in the frame, two sides of the frame are respectively installed on the stand column through the installation shaft, the movable wheel is installed at the bottom of the stand column, the reinforcing rod is connected at the bottom of the stand column, the locking nut is installed at the outer side of the stand column, the scale is arranged on the white board, the X shaft and the Y shaft are mutually vertical, the X shaft and the Y shaft are respectively connected with the frame in a sliding manner, the switch is arranged on the reinforcing rod, and: can fix the device through negative sucker, avoid rocking, the pen touch force when making the drawing need not to consider and taboo too much, improves the speed and the stability of drawing.
Description
Technical Field
The invention relates to the field of teaching aids, in particular to a movable curve drawing device for mathematical teaching.
Background
Mathematics is a subject of researching concepts such as quantity, structure, change, space and information, belongs to form science from a certain angle, and in the mathematical teaching process, a teacher often needs to draw various curves on a blackboard, so that students can obtain visual learning impression, meanwhile, the memory of the students is deepened, and the teaching effect is improved.
The curve drawing device for teaching at present generally adopts the blank to draw, but blank weight is lighter, and the overweight can promote the blank slope of putting down the pen when drawing, and the strength when leading to drawing is held between fingers the difficulty.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provides a mobile curve drawing device for mathematical education.
The invention is realized by adopting the following technical scheme: the utility model provides a device is drawn with portable curve to mathematical education, its structure is including removing wheel, stand, installation axle, frame, blank, X axle, Y axle, lock nut, scale, switch, fixed foot, anchor strut, the frame in-connection has the blank, the frame both sides are installed on the stand through installation axle respectively, the removal wheel is installed to the stand bottom, the stand bottom is connected with the anchor strut, lock nut installs in the stand outside, be equipped with the scale on the blank, X axle and Y axle mutually perpendicular, X axle, Y axle respectively with frame sliding connection, be equipped with the switch on the anchor strut, the both ends of anchor strut are connected with fixed foot respectively.
As optimization, the fixed foot comprises a first electromagnet, a sliding block, a rod sleeve, a connecting rod, a main spring, a spring plate and a sucker, the first electromagnet is connected to the top in the rod sleeve, the sliding block is arranged below the first electromagnet and is in sliding connection with the rod sleeve, the bottom of the sliding block is connected with the sucker through the connecting rod, the spring plate is connected to the bottom in the rod sleeve, and the main spring is connected between the spring plate and the sliding block.
As optimization, the sucking disc comprises a second electromagnet, a negative pressure cylinder, a main piston and an adsorption head, wherein the second electromagnet is arranged at the top in the negative pressure cylinder, the main piston is arranged in the negative pressure cylinder, and the bottom of the negative pressure cylinder is connected with the adsorption head.
Preferably, the sucker further comprises a touch structure, the touch structure comprises a touch rod, a lower piston, a small spring, a pore plate, a negative pressure cavity, an upper piston, a push rod and a conductive block, the negative pressure cavity is arranged in the inner wall of the negative pressure cylinder, the upper end and the lower end of the negative pressure cavity are respectively provided with the upper piston and the lower piston, the top of the lower piston is connected with the pore plate in the middle of the negative pressure cavity through the small spring, the bottom of the lower piston is connected with the touch rod, and the top of the upper piston is connected with the conductive block through the push rod.
Preferably, the second electromagnet is provided with a movable contact piece and a static contact piece, and the movable contact piece and the static contact piece are respectively arranged on the side surface of the conducting block.
As optimizing, the slider includes the block, from driving wheel, bevel gear pair, input shaft, fan, action wheel, gear, belt, block upper portion is equipped with the recess, install gear, bevel gear pair in the recess, the gear is connected with the action wheel, the action wheel is connected with from the driving wheel through the belt, be connected with the input shaft top through bevel gear pair from the driving wheel, the input shaft bottom with inlay the fan in block lower part and be connected, the block is equipped with air inlet duct and exhaust duct, the exhaust duct is linked together with the connecting rod, the block side is equipped with the bar groove.
Preferably, the inner side of the rod sleeve is provided with a rack, the rack is meshed with the gear, and the rack is arranged in the strip-shaped groove.
Preferably, the connecting rod is of a hollow structure, a plurality of uniformly distributed air outlet channels are arranged in the bottom of the negative pressure cylinder and the adsorption head, and the tops of the air outlet channels are communicated with the connecting rod.
Preferably, the intersection angle between the two shafts of the bevel gear pair is equal to 90 degrees.
Preferably, the first electromagnet is electrically connected with the switch.
Preferably, the slider is a magnet.
As optimization, the bottom of the main piston is made of silica gel, and the top of the main piston is made of metal.
Advantageous effects
When the invention is used, the switch is turned on to lead the fixed foot to be adsorbed and fixed on the ground, thus leading the white board to improve the fixity, when the invention is used for drawing, the point is firstly drawn by the matching of the scale, the X axis and the Y axis, and then the point is connected, thereby completing the drawing, after the switch is turned on, the first electromagnet is electrified to generate the repulsive force with the slide block, thereby pushing the slide block downwards until the sucker is contacted with the ground, when the sucker is contacted with the ground, the ground can push the touch rod upwards, the ejector rod can be driven by the negative pressure to drive the conductive block to move upwards to be contacted with the movable contact and the static contact at the same time, at the moment, the second electromagnet is electrified to generate the suction force to adsorb the main piston upwards, thereby leading the inside of the adsorption head to form the negative pressure, thereby being firmly adsorbed on the ground, in the process that the slide block moves downwards, the gear is continuously pushed to rotate by, the air blown out by the fan is blown out through the air outlet channel, the connecting rod and the air outlet channel in sequence, so that dust on the ground can be cleaned before the adsorption head does not reach the ground, and better adsorption of the adsorption head is facilitated.
Compared with the prior art, the invention has the beneficial effects that: can fix the device through negative sucker, avoid rocking, the pen touch force when making the drawing need not to consider and taboo too much, improves the speed and the stability of drawing.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural view of a mobile curve drawing device for mathematical education according to the present invention.
Fig. 2 is a first structural diagram of the fixing leg according to the present invention.
FIG. 3 is a schematic view of the structure of the chuck of the present invention.
Fig. 4 is an enlarged schematic view of a portion a in fig. 3.
Fig. 5 is a second structural diagram of the fixing leg according to the present invention.
Fig. 6 is an enlarged schematic view of a portion B in fig. 5.
In the figure: the device comprises a moving wheel 1, an upright post 2, a mounting shaft 3, a frame 4, a white board 5, an X shaft 6, a Y shaft 7, a locking nut 8, a scale 9, a switch 10, a fixing foot 11, a reinforcing rod 12, a first electromagnet a, a sliding block b, a rod sleeve c, a connecting rod d, a main spring e, a spring plate f, a sucker g, a second electromagnet g1, a negative pressure cylinder g2, a main piston g3, an adsorption head g4, a contact rod g50, a lower piston g51, a small spring g52, an orifice plate g53, a negative pressure cavity g54, an upper piston g55, a push rod g56, a conductive block g57, a movable contact g10, a static contact g11, a block b1, a driven wheel b2, a bevel gear pair b2, an input shaft b2, a fan b2, a driving wheel b2, a gear b2, a belt b2, a groove b2, an air inlet channel b2, an air outlet channel b2, a strip 2 c and.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-3, the present invention provides a technical solution of a mobile curve drawing device for mathematical education, comprising: its structure includes removal wheel 1, stand 2, installation axle 3, frame 4, blank 5, X axle 6, Y axle 7, lock nut 8, scale 9, switch 10, fixed foot 11, anchor strut 12, frame 4 in-connection has blank 5, frame 4 both sides are installed on stand 2 through installation axle 3 respectively, removal wheel 1 is installed to stand 2 bottom, stand 2 bottom is connected with anchor strut 12, lock nut 8 is installed in the stand 2 outside, be equipped with scale 9 on the blank 5, X axle 6 and Y axle 7 mutually perpendicular, X axle 6, Y axle 7 respectively with frame 4 sliding connection, be equipped with switch 10 on anchor strut 12, the both ends of anchor strut 12 are connected with fixed foot 11 respectively, fixed foot 11 includes first electro-magnet a, slider b, rod cover c, connecting rod d, main spring e, spring board f, spring board, The suction cup g comprises a second electromagnet g1, a negative pressure cylinder g2, a main piston g3 and an adsorption head g4, the inner top of the negative pressure cylinder g2 is provided with a second electromagnet g1, the main piston g3 is arranged in the negative pressure cylinder g2, the bottom of the negative pressure cylinder g2 is connected with an adsorption head g4, the suction cup g further comprises a touch structure g5, the touch structure g5 comprises a touch rod g50, a lower piston g51, a small spring g52, a g53, a negative pressure cavity g54, an upper piston g55, a push rod g56 and a conductive block g57, and the negative pressure cavity g54 is arranged in the inner wall of the negative pressure cylinder g2, the upper end and the lower end of the negative pressure cavity g54 are respectively provided with an upper piston g55 and a lower piston g51, the top of the lower piston g51 is connected with an orifice plate g53 in the middle of the negative pressure cavity g54 through a small spring g52, the bottom of the lower piston g51 is connected with a feeler lever g50, the top of the upper piston g55 is connected with a conductive block g57 through a mandril g56, the second electromagnet g1 is provided with a movable contact g10 and a static contact g11, the movable contact g10 and the static contact g11 are respectively arranged on the side face of the conductive block g57, the first electromagnet a is electrically connected with the switch 10, the sliding block b is a magnet and can generate repulsion with the first electromagnet a, the bottom of the main piston g3 is made of silica gel, the top of the main piston is made of metal, and the second electromagnet g1 can attract the main.
The working principle is as follows: when the electronic whiteboard is used, the switch 10 is turned on, the fixing feet 11 are fixedly adsorbed on the ground, the whiteboard 5 is enabled to improve the fixity, when in drawing, dots are drawn firstly through the matching of the scale 9, the X shaft 6 and the Y shaft 7 and then are connected, drawing is completed, after the switch 10 is turned on, the first electromagnet a is electrified to generate repulsive force with the sliding block b, the sliding block b is pushed downwards until the sucking disc g is contacted with the ground, when the sucking disc g is contacted with the ground, the ground can push the contact rod g50 upwards, the push rod g56 can be driven by negative pressure to drive the conductive block g57 to move upwards to be contacted with the movable contact g10 and the static contact g11 simultaneously, at the moment, the second electromagnet g1 is electrified to generate suction force to adsorb the main piston g3 upwards, so that negative pressure is formed inside the adsorbing head g4, and the main piston g.
Example 2
Referring to fig. 1-6, the present invention provides a technical solution of a mobile curve drawing device for mathematical education, comprising: its structure includes removal wheel 1, stand 2, installation axle 3, frame 4, blank 5, X axle 6, Y axle 7, lock nut 8, scale 9, switch 10, fixed foot 11, anchor strut 12, frame 4 in-connection has blank 5, frame 4 both sides are installed on stand 2 through installation axle 3 respectively, removal wheel 1 is installed to stand 2 bottom, stand 2 bottom is connected with anchor strut 12, lock nut 8 is installed in the stand 2 outside, be equipped with scale 9 on the blank 5, X axle 6 and Y axle 7 mutually perpendicular, X axle 6, Y axle 7 respectively with frame 4 sliding connection, be equipped with switch 10 on anchor strut 12, the both ends of anchor strut 12 are connected with fixed foot 11 respectively, fixed foot 11 includes first electro-magnet a, slider b, rod cover c, connecting rod d, main spring e, spring board f, spring board, The suction cup g comprises a second electromagnet g1, a negative pressure cylinder g2, a main piston g3 and an adsorption head g4, the inner top of the negative pressure cylinder g2 is provided with a second electromagnet g1, the main piston g3 is arranged in the negative pressure cylinder g2, the bottom of the negative pressure cylinder g2 is connected with an adsorption head g4, the suction cup g further comprises a touch structure g5, the touch structure g5 comprises a touch rod g50, a lower piston g51, a small spring g52, a g53, a negative pressure cavity g54, an upper piston g55, a push rod g56 and a conductive block g57, and the negative pressure cavity g54 is arranged in the inner wall of the negative pressure cylinder g2, the upper end and the lower end of the negative pressure cavity g54 are respectively provided with an upper piston g55 and a lower piston g51, the top of the lower piston g51 is connected with a pore plate g53 in the middle of the negative pressure cavity g54 through a small spring g52, the bottom of the lower piston g51 is connected with a contact rod g50, the top of the upper piston g55 is connected with a conductive block g55 through a push rod g55, the second electromagnet g55 is provided with a movable contact piece g55 and a static contact piece g55, the movable contact piece g55 and the static contact piece g55 are respectively arranged on the side surface of the conductive block g55, the first electromagnet a is electrically connected with a switch 10, the sliding block b is a magnet and can generate repulsion with the first electromagnet a, the bottom of the main piston g55 is made of silica gel, the top of the main piston g55 is made of metal material and is conveniently attracted by the second electromagnet g55, the sliding block b 55 comprises a block b 55, a driven wheel b 55, a bevel gear pair b 55, an input shaft 55 b 55, a belt groove is arranged on the upper portion 55 b, a gear b7 and a bevel gear pair b3 are arranged in the groove b10, the gear b7 is connected with a driving wheel b6, the driving wheel b6 is connected with a driven wheel b2 through a belt b8, the driven wheel b2 is connected with the top of an input shaft b4 through a bevel gear pair b3, the bottom of the input shaft b4 is connected with a fan b5 embedded at the lower part of a block b1, the block b1 is provided with an air inlet channel b11 and an air outlet channel b12, the air outlet channel b12 is communicated with a connecting rod d, the side surface of the block b1 is provided with a strip-shaped groove b13, the inner side of the rod sleeve c is provided with a rack c0, the rack c0 is meshed with a gear b7, the rack c0 is arranged in a strip-shaped groove b13, the connecting rod d is of a hollow structure, a plurality of air outlet channels g6 which are uniformly distributed are arranged in the bottom of the negative pressure cylinder g2 and the adsorption head g4, the top of the air outlet channel g6 is communicated with a connecting rod d, and the intersection angle between two shafts of the bevel gear pair b3 is equal to 90 degrees.
The working principle is as follows: in the process that the sliding block b moves downwards, the gear b7 is continuously pushed to rotate by the rack c0, the input shaft b4 can be driven to rotate through the transmission of the belt b8 and the matching of the bevel gear pair b3, so that power is provided for the fan b5, air blown out by the fan b5 sequentially passes through the air outlet channel b12, the connecting rod d and the air outlet channel g6, dust on the ground can be cleaned before the adsorption head g4 does not reach the ground, and the adsorption head g4 can be better adsorbed conveniently.
Compared with the prior art, the invention has the technical progress that: can fix the device through negative sucker, avoid rocking, the pen touch force when making the drawing need not to consider and taboo too much, improves the speed and the stability of drawing.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a device is drawn with portable curve to mathematical education, its structure is including removing wheel (1), stand (2), installation axle (3), frame (4), blank (5), X axle (6), Y axle (7), lock nut (8), scale (9), switch (10), fixed foot (11), anchor strut (12), frame (4) in-connection has blank (5), frame (4) both sides are installed on stand (2) through installation axle (3) respectively, wheel (1) is installed to stand (2) bottom, stand (2) bottom is connected with anchor strut (12), lock nut (8) are installed in stand (2) outside, its characterized in that: be equipped with scale (9) on whiteboard (5), X axle (6) and Y axle (7) mutually perpendicular, X axle (6), Y axle (7) respectively with frame (4) sliding connection, be equipped with switch (10) on anchor strut (12), the both ends of anchor strut (12) are connected with fixed foot (11) respectively.
2. The portable curve plotting apparatus for mathematical education as set forth in claim 1, wherein: fixed foot (11) include first electro-magnet (a), slider (b), rod cover (c), connecting rod (d), main spring (e), spring board (f), sucking disc (g), the top is connected with first electro-magnet (a) in rod cover (c), slider (b) are established in first electro-magnet (a) below and with rod cover (c) sliding connection, slider (b) bottom is connected with sucking disc (g) through connecting rod (d), the bottom is connected with spring board (f) in rod cover (c), be connected with main spring (e) between spring board (f) and slider (b).
3. The portable curve plotting apparatus for mathematical education as set forth in claim 2, wherein: sucking disc (g) include second electro-magnet (g 1), negative pressure section of thick bamboo (g 2), main piston (g 3), adsorb head (g 4), the top is equipped with second electro-magnet (g 1) in negative pressure section of thick bamboo (g 2), main piston (g 3) are established in negative pressure section of thick bamboo (g 2), negative pressure section of thick bamboo (g 2) bottom is connected with adsorption head (g 4).
4. The portable curve plotting apparatus for mathematical education as set forth in claim 2, wherein: the sucker (g) further comprises a touch structure (g 5), the touch structure (g 5) comprises a touch rod (g 50), a lower piston (g 51), a small spring (g 52), an orifice plate (g 53), a negative pressure cavity (g 54), an upper piston (g 55), a push rod (g 56) and a conductive block (g 57), the negative pressure cavity (g 54) is arranged in the inner wall of the negative pressure cylinder (g 2), the upper end and the lower end of the negative pressure cavity (g 54) are respectively provided with the upper piston (g 55) and the lower piston (g 51), the top of the lower piston (g 51) is connected with the orifice plate (g 53) in the middle of the negative pressure cavity (g 54) through the small spring (g 52), the bottom of the lower piston (g 51) is connected with the touch rod (g 50), and the top of the upper piston (g 55) is connected with the conductive block (g 57) through the push rod (g 56).
5. The portable curve plotting apparatus for mathematical education as set forth in claim 3, wherein: the second electromagnet (g 1) is provided with a movable contact piece (g 10) and a static contact piece (g 11), and the movable contact piece (g 10) and the static contact piece (g 11) are respectively arranged on the side surface of the conductive block (g 57).
6. The portable curve plotting apparatus for mathematical education as set forth in claim 2, wherein: the sliding block (b) comprises a block body (b 1), a driven wheel (b 2), a bevel gear pair (b 3), an input shaft (b 4), a fan (b 5), a driving wheel (b 6), a gear (b 7) and a belt (b 8), the upper part of the block body (b 1) is provided with a groove (b 10), a gear (b 7) and a bevel gear pair (b 3) are arranged in the groove (b 10), the gear (b 7) is connected with a driving wheel (b 6), the driving wheel (b 6) is connected with a driven wheel (b 2) through a belt (b 8), the driven wheel (b 2) is connected with the top of the input shaft (b 4) through a bevel gear pair (b 3), the bottom of the input shaft (b 4) is connected with a fan (b 5) embedded in the lower part of a block body (b 1), the block body (b 1) is provided with an air inlet duct (b 11) and an air outlet duct (b 12), the air outlet channel (b 12) is communicated with the connecting rod (d), and the side surface of the block body (b 1) is provided with a strip-shaped groove (b 13).
7. The portable curve plotting apparatus for mathematical education as set forth in claim 2, wherein: the inner side of the rod sleeve (c) is provided with a rack (c 0), the rack (c 0) is meshed with the gear (b 7), and the rack (c 0) is arranged in the strip-shaped groove (b 13).
8. The portable curve plotting apparatus for mathematical education as set forth in claim 2, wherein: connecting rod (d) are hollow structure, be equipped with a plurality of evenly distributed's gas off-road (g 6) in negative pressure section of thick bamboo (g 2) bottom and adsorption head (g 4), gas off-road (g 6) top and connecting rod (d) intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110480722.1A CN113103806A (en) | 2021-04-30 | 2021-04-30 | Device is drawn with portable curve to mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110480722.1A CN113103806A (en) | 2021-04-30 | 2021-04-30 | Device is drawn with portable curve to mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113103806A true CN113103806A (en) | 2021-07-13 |
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ID=76720920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110480722.1A Pending CN113103806A (en) | 2021-04-30 | 2021-04-30 | Device is drawn with portable curve to mathematical education |
Country Status (1)
| Country | Link |
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| CN (1) | CN113103806A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205255834U (en) * | 2015-12-28 | 2016-05-25 | 郑州澍青医学高等专科学校 | English teaching 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 |
| CN108621653A (en) * | 2018-05-10 | 2018-10-09 | 何川 | A kind of mathematical education multifunctional assisting device |
| CN108682230A (en) * | 2018-06-13 | 2018-10-19 | 陈日韩 | A kind of teaching aids of physics demonstrating |
| CN209336345U (en) * | 2018-12-25 | 2019-09-03 | 朱广军 | A kind of new type blackboard drawing tool convenient for mathematical education |
| CN211016087U (en) * | 2019-06-18 | 2020-07-14 | 周口职业技术学院 | High-position English teaching display board |
| CN211207659U (en) * | 2020-03-02 | 2020-08-07 | 潍坊工程职业学院 | Dedicated mathematics teaching aid of mathematics thinking training |
| CN211454929U (en) * | 2018-08-01 | 2020-09-08 | 甘肃广播电视大学 | Business administration is with teaching display device |
| CN213024959U (en) * | 2020-10-28 | 2021-04-20 | 山东云平信息科技有限公司 | Interactive show board is used in teaching |
-
2021
- 2021-04-30 CN CN202110480722.1A patent/CN113103806A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205255834U (en) * | 2015-12-28 | 2016-05-25 | 郑州澍青医学高等专科学校 | English teaching 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 |
| CN108621653A (en) * | 2018-05-10 | 2018-10-09 | 何川 | A kind of mathematical education multifunctional assisting device |
| CN108682230A (en) * | 2018-06-13 | 2018-10-19 | 陈日韩 | A kind of teaching aids of physics demonstrating |
| CN211454929U (en) * | 2018-08-01 | 2020-09-08 | 甘肃广播电视大学 | Business administration is with teaching display device |
| CN209336345U (en) * | 2018-12-25 | 2019-09-03 | 朱广军 | A kind of new type blackboard drawing tool convenient for mathematical education |
| CN211016087U (en) * | 2019-06-18 | 2020-07-14 | 周口职业技术学院 | High-position English teaching display board |
| CN211207659U (en) * | 2020-03-02 | 2020-08-07 | 潍坊工程职业学院 | Dedicated mathematics teaching aid of mathematics thinking training |
| CN213024959U (en) * | 2020-10-28 | 2021-04-20 | 山东云平信息科技有限公司 | Interactive show board is used in teaching |
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