CN107718954A - It is a kind of to facilitate picture ellipse ruler - Google Patents
It is a kind of to facilitate picture ellipse ruler Download PDFInfo
- Publication number
- CN107718954A CN107718954A CN201710778427.8A CN201710778427A CN107718954A CN 107718954 A CN107718954 A CN 107718954A CN 201710778427 A CN201710778427 A CN 201710778427A CN 107718954 A CN107718954 A CN 107718954A
- Authority
- CN
- China
- Prior art keywords
- groove
- bar
- hinge bar
- mobile jib
- hinged
- 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.)
- Withdrawn
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Classifications
-
- 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
- B43L11/00—Non-circular-curve-drawing instruments
- B43L11/02—Non-circular-curve-drawing instruments for drawing conic sections
- B43L11/04—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses
- B43L11/055—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses with guides
Abstract
Facilitate picture ellipse ruler the invention discloses a kind of,Including scale,Holding tank is provided with scale,Elliptical drawing tool is provided with holding tank,Elliptical drawing tool includes mobile jib,First hinge bar,Second hinge bar,Mobile jib is hinged on inside holding tank,Mounting groove is set on mobile jib,The position of plate body is provided with rail groove in mounting groove,First hinge bar is hinged on mounting groove backwards to the position of rail groove,The second hinge bar is hinged with first hinge bar,The moving mass slided in rail groove is provided with rail groove,Moving mass is hinged with the second hinge bar backwards to one end of the first hinge bar,The through slot of insertion mobile jib is provided with rail groove,Gangbar is provided with outside through slot,Connecting rod is provided with gangbar,Connecting rod is fixedly connected through through slot and moving mass with the second hinge bar,Gangbar is provided with the insertion tube for being inserted in for chalk and being drawn on body backwards to one end of mobile jib.The ruler of Pass through above-mentioned technical proposal is drawn oval more convenient.
Description
Technical field
It is more particularly to a kind of to facilitate picture ellipse ruler the present invention relates to a kind of realia.
Background technology
Blackboard is not to refer in particular to the plate face of black, said in traditional sense it be one can be hard with the plane of repeated writing, plate face
Firmly, it is used for imparting knowledge to students.Made of plank or ground glass etc., it can be write with the specific writing material such as chalk above.
Mostly black, blackish green, white or ecru.
It is often required to draw elliptical shape on blackboard in teaching, during use, and elliptical shape is for thinking manual picture
For, and the instrument of existing picture ellipse is complex, is not suitable for drawing on blackboard.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide.
To achieve the above object, the invention provides following technical scheme：A kind of scale for facilitating picture oval.One kind is convenient
Oval ruler, including scale are drawn, holding tank is provided with the scale, elliptical drawing tool, institute are provided with the holding tank
Stating elliptical drawing tool includes mobile jib, the first hinge bar, the second hinge bar, and the mobile jib is hinged on inside holding tank, the master
Mounting groove is set on bar, and the mounting groove is interior to be provided with rail groove towards the position of plate body, and first hinge bar is hinged on peace
Tankage is hinged with the second hinge bar on the position of rail groove, first hinge bar, is provided with the rail groove in-orbit
The moving mass slided in road groove, the moving mass are hinged with the second hinge bar backwards to one end of the first hinge bar, the rail groove
On be provided with the through slot of insertion mobile jib, be provided with gangbar outside the through slot, connecting rod, institute be provided with the gangbar
State connecting rod to be fixedly connected with the second hinge bar through through slot and moving mass, the gangbar is provided with backwards to one end of mobile jib
The insertion tube drawn on body is inserted in for chalk.
As a further improvement on the present invention, some mounting holes are provided with the holding tank, are provided with the mobile jib
For the mounting post being hinged on mounting hole, set fluted on the mobile jib, be provided with the groove by pressing spring, it is described
Mounting post is arranged on groove, and the pressing both ends of the spring is fixedly connected respectively at mounting post with bottom portion of groove, and the spring is kept
Mounting post is stretched out outside groove.
As a further improvement on the present invention, the first sliding groove is provided with the scale, is set on first sliding groove
The first sliding shoe is equipped with, described first sliding shoe one end is stretched out from the first sliding groove, and first sliding shoe stretches out first
Sliding groove one end, which is provided with, is inserted in the first chalk jack that straight line is drawn on plate body for chalk.
As a further improvement on the present invention, the link slot of insertion scale is provided between some mounting holes, it is described
The diameter that well width is less than mounting post is connected, pressing lever is connected with the mounting post, the pressing shank diameter is less than or equal to connect
Access slot width, after the mounting post is completely into groove, mobile jib position is adjusted through link slot by pressing lever.
As a further improvement on the present invention, the part that first sliding shoe is located in the first sliding groove is provided with depression
Groove, spring is provided with the recessed groove, pellet is provided with the spring, the spring keeps pellet to stretch out outside recessed groove,
The embedded caulking groove of ammunition feed is provided with the first sliding groove inwall.
As a further improvement on the present invention, the side in the mounting groove backwards to track strip is provided with the first hinge hole,
The first articulated column coordinated with the first hinge hole is provided with first hinge bar, first hinge bar is be hinged backwards to first
One end of post is provided with the second hinge hole, and the second articulated column being hinged with the second hinge hole is provided with second articulated column,
Second hinge bar is provided with the fixing hole of rectangular cross-section on the second articulated column, and section is provided with the connecting rod
Rectangle fix bar, the fix bar is inserted into fixing hole, and section is provided with the moving mass as circular perforation, institute
Connecting rod section is stated as circle.
In use, when needing picture ellipse, by rotating the first hinge bar, in the first hinge bar in rotation process
In, the second hinge bar can be driven to move, the second hinge bar is hinged on moving mass, by rail during the motion of moving mass
Road groove limitation, the motion for so allowing for the second hinge bar forms an oval motion path, afterwards due to through slot
Setting so that gangbar can be connected with the second hinge bar, can thus exclude interference of the mobile jib for the second hinge bar,
The chalk that is inserted in gangbar insertion tube is enabled to contact, draw complete with plate body completely when drawing oval
It is oval.
It is this to draw oval mode, simple in construction, easy processing and manipulation.Draw simultaneously convenient also more convenient.
Brief description of the drawings
Fig. 1 is the overall structure figure of the present invention；
Fig. 2 is the detonation configuration figure of the present invention；
Fig. 3 is the backsight explosive view of the present invention；
Fig. 4 is the elliptical drawing tool structural representation of the present invention；
Fig. 5 is the first sliding shoe fit structure schematic diagram inside the scale of the present invention；
Fig. 6 is the mobile jib internal structure schematic diagram of the present invention；
Fig. 7 is the mobile jib mounting post structural representation of the present invention.
1st, plate body；2nd, mounting rail；3rd, screw rod；4th, the first rotating mechanism；5th, slipping block；6th, screwed hole；8th, chute；9th, mark
Chi；10th, bar shaped tooth；11st, rotating cylinder；12nd, annular tooth；13rd, the second rotating mechanism；14th, holding tank；15th, mobile jib；16th, the first hinge
Extension bar；17th, the second hinge bar；18th, mounting groove；19th, rail groove；20th, moving mass；21st, through slot；22nd, gangbar；23rd, connect
Bar；24th, insertion tube；25th, mounting hole；26th, mounting post；27th, groove；28th, by pressing spring；29th, the first sliding groove；30th, first slide
Block；31st, the first chalk jack；32nd, link slot；33rd, pressing lever；34th, recessed groove；35th, spring；36th, pellet；37th, caulking groove；38、
Limited block；39th, stopper slot；40th, the first hinge hole；41st, the first articulated column；42nd, the second hinge hole；43rd, the second articulated column；44、
Fixing hole；45th, perforate；46th, fix bar.
Embodiment
The present invention is described in further detail below in conjunction with the embodiment given by accompanying drawing.
Referring to figs. 1 to shown in 7, a kind of of the present embodiment facilitates picture ellipse ruler, including plate body 1, and the bottom of plate body 1 is set
Mounting rail 2 is equipped with, is provided with screw rod 3 in the mounting rail 2, described one end of screw rod 3 is connected with the first rotating mechanism 4, and described
One rotating mechanism 4, the interior sliding of the mounting rail 2 are connected with slipping block 5, screwed hole 6, the spiral shell are provided with the slipping block 5
Bar 3 is threaded on screwed hole 6, rotates the screw rod 3, and the slipping block 5 moves in mounting rail 2, and the slipping block 5 is stretched
The part for going out mounting rail 2 is provided with chute 8, is slid in the chute 8 and is connected with scale 9, the scale 9 is stretched from chute both ends
Go out, and plate body 1 is stretched in one end, bar shaped tooth 10 is provided with the scale 9, the bottom of plate body 1 is provided with rotating cylinder 11, described
Annular tooth 12 is provided with rotating cylinder 11, the annular tooth 12 engages with positioned at the bar shaped tooth 10 backwards to the one end of plate body 1, the rotation
The second rotating mechanism 13 is provided with rotating cylinder 11, holding tank 14 is provided with the scale 9, is provided with the holding tank 14 ellipse
Circle drawing tool, the elliptical drawing tool include mobile jib 15, the first hinge bar 16, the second hinge bar 17, and the mobile jib 15 is cut with scissors
It is connected on inside holding tank 14, mounting groove 18 is set on the mobile jib 15, is provided with the mounting groove 18 towards the position of plate body 1
Rail groove 19, first hinge bar 16 are hinged on mounting groove 18 on the position of rail groove 19, first hinge bar 16
The second hinge bar 17 is hinged with, the moving mass 20 slided in rail groove 19, the moving mass are provided with the rail groove 19
20 are hinged with the second hinge bar 17 backwards to one end of the first hinge bar 16, and passing through for insertion mobile jib 15 is provided with the rail groove 19
Groove 21, the through slot 21 are provided with gangbar 22 outside, connecting rod 23, the connecting rod 23 are provided with the gangbar 22
It is fixedly connected through through slot 21 and moving mass 20 with the second hinge bar 17, the gangbar 22 is set backwards to one end of mobile jib 15
Have and be inserted in the insertion tube 24 drawn on body for chalk.
In use, the first rotating mechanism 4 can be driven first so that the first rotating mechanism 4 is rotated so as to drive
Slipping block 5 within mounting rail 2 is subjected to displacement, and is moved past in place in the position of horizontal level this makes it possible to control scale 9
Cheng Zhong, because annular tooth 12 engages with bar shaped tooth 10, such bar shaped tooth 10 will enter line slip in the between cog of annular tooth 12,
Normal use adjustment is not interfered with.
Simultaneously can be by driving the second rotating mechanism 13 so that rotating cylinder 11 also rotates, so that annular tooth
12 drive bar shaped teeth 10, can thus control position of the scale 9 on vertical.
The first transmission mechanism and the second transmission mechanism can also be driven simultaneously, while adjusts horizontally and vertically position, so
Can enables scale 9 to be displaced on any position.
When needing picture ellipse, it is only necessary to put down mobile jib 15 from holding tank 14 so that mobile jib 15 enters plate body 1
On, afterwards by rotating the first hinge bar 16, in the first hinge bar 16 in rotation process, the second hinge bar 17 can be driven to occur
Motion, the second hinge bar 17 is hinged on moving mass 20, is limited by rail groove 19 during the motion of moving mass 20, so
The motion for allowing for the second hinge bar 17 forms an oval motion path, afterwards due to the setting of through slot 21 so that
Gangbar 22 can be connected with the second hinge bar 17, can thus be excluded interference of the mobile jib 15 for the second hinge bar 17, be made
Chalk in the insertion tube 24 of gangbar 22, which must be inserted in, can contact, draw complete with plate body 1 completely when drawing oval
Ellipse.
It is this to draw oval mode, simple in construction, easy processing and manipulation.Draw simultaneously convenient also more convenient.
As a kind of improved embodiment, some mounting holes 25, the mobile jib are provided with the holding tank 14
The mounting post 26 for being hinged on mounting hole 25 is provided with 15, fluted 27 are set on the mobile jib 15, the groove 27
Inside it is provided with by pressing spring 28, the mounting post 26 is arranged on groove 27, and the both ends of pressing spring 28 of pressing are respectively at mounting post 26
It is fixedly connected with the bottom of groove 27, the spring 35 keeps mounting post 26 to stretch out outside groove 27.
, can be directly by pressing mounting post 26 during adjusting so that mounting post 26 is trapped in groove 27,
Can thus cause mobile jib 15 to depart from limitation, adjust to suitable position, unclamp mounting post 26 afterwards, thus can by
In the presence of pressing spring 28 so that mounting post 26 is embedded into suitable mounting hole 25 again.
As a kind of improved embodiment, the first sliding groove 29 is provided with the scale 9, described first slides
The first sliding shoe 30 is provided with groove 29, described one end of first sliding shoe 30 is stretched out from the first sliding groove, and described first slides
Motion block 30 stretches out first sliding groove one end and is provided with the first chalk jack 31 for being inserted in for chalk and straight line being drawn on plate body 1.
By the setting of the first sliding shoe 30, directly chalk can be inserted into the first chalk jack 31, directly allow
One sliding shoe 30 enters line slip in the first sliding groove, it is possible to directly draws more neat straight line.So that using more square
Just.
As a kind of improved embodiment, the connection of insertion scale 9 is provided between some mounting holes 25
Groove 32, the width of link slot 32 are less than the diameter of mounting post 26, pressing lever 33, the pressing are connected with the mounting post 26
The diameter of bar 33 is less than or equal to the width of link slot 32, after the mounting post 26 is completely into groove 27, is passed through and connected by pressing lever 33
Access slot 32 adjusts the position of mobile jib 15.
Pass through above-mentioned technical proposal, can be in course of adjustment more to facilitate.
As a kind of improved embodiment, the part that first sliding shoe 30 is located in the first sliding groove 29 is set
Recessed groove 34 is equipped with, spring 35 is provided with the recessed groove 34, pellet 36 is provided with the spring 35, the spring 35 is protected
Hold pellet 36 to stretch out outside recessed groove 34, the caulking groove 37 of the insertion of ammunition feed 36 is provided with the inwall of the first sliding groove 29.
Pass through the cooperation of pellet 36 and caulking groove 37 so that have in use in the first sliding shoe 30 and the second sliding shoe
One position-limiting action, can be limited during impracticable, will not arbitrarily slide.
As a kind of improved embodiment, limited block 38 is provided with the slipping block 5, on the mounting rail 2
It is provided with the stopper slot 39 being embedded in for limited block 38.
By the cooperation of limited block 38 and stopper slot 39, slipping block 5 is enabled to be not easily disconnected from, make in installation process
Obtain more stable in slipping.
As a kind of improved embodiment, the limited block 38 is trapezoidal, and the short side of the stopper slot 39 with
Slipping block 5 overlaps, and the stopper slot 39 is identical with the shape of limited block 38.
By the way that limited block 38 and stopper slot 39 are set in echelon, it can further strengthen position-limiting action.
As a kind of improved embodiment, first rotating mechanism 4, the second rotating mechanism 13 are rotating
Motor.
Clockwise and anticlockwise motor is more conventional motor, and the function of rotating can be directly realized by switch.
As a kind of improved embodiment, the side in the mounting groove 18 backwards to track strip is provided with the first hinge
Hole 40 is connect, the first articulated column 41 coordinated with the first hinge hole 40 is provided with first hinge bar 16, described first is be hinged
Bar 16 is provided with the second hinge hole 42 backwards to one end of the first articulated column 41, is provided with second articulated column 43 and the second hinge
The second be hinged articulated column 43 of hole 42 is connect, second hinge bar 17 is provided with rectangular cross-section on the second articulated column 43
Fixing hole 44, the fix bar 46 of the rectangle in section is provided with the connecting rod 23, and the fix bar 46 is inserted into fixing hole 44
In, section is provided with the moving mass 20 as circular perforation 45, the section of connecting rod 23 is circle.
Pass through above-mentioned technical proposal, fix bar 46 is set in connecting rod 23, and fix bar 46 is passed through from perforation 45, is inserted into
Formed a fixed connection in fixing hole 44 with the second hinge bar 17, the section of connecting rod 23 cooperates for circular and perforation 45, so
It is be hinged structure to be formed the second hinge bar 17 and moving mass 20.Above-mentioned fit structure, it is relatively simple easily operated.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of facilitate picture ellipse ruler, it is characterised in that：Including scale (9), holding tank is provided with the scale (9)
(14) elliptical drawing tool, is provided with the holding tank (14), the elliptical drawing tool is hinged including mobile jib (15), first
Bar (16), the second hinge bar (17), the mobile jib (15) are hinged on holding tank (14) inside, installation are set on the mobile jib (15)
Groove (18), the mounting groove (18) is interior to be provided with rail groove (19), the first hinge bar (16) hinge towards the position of plate body (1)
It is connected on mounting groove (18) and is hinged with the second hinge bar (17) on the position of rail groove (19), first hinge bar (16),
The moving mass (20) slided in rail groove (19) is provided with the rail groove (19), the moving mass (20) is be hinged with second
Bar (17) is hinged backwards to one end of the first hinge bar (16), and the through slot of insertion mobile jib (15) is provided with the rail groove (19)
(21) gangbar (22), is provided with outside the through slot (21), connecting rod (23), the company are provided with the gangbar (22)
Extension bar (23) is fixedly connected through through slot (21) and moving mass (20) with the second hinge bar (17), and the gangbar (22) is backwards
One end of mobile jib (15) is provided with the insertion tube (24) for being inserted in for chalk and being drawn on body.
A kind of facilitate picture ellipse ruler 2. according to claim 1, it is characterised in that：It is provided with the holding tank (14)
Some mounting holes (25), the mounting post (26) for being hinged on mounting hole (25), the master are provided with the mobile jib (15)
Set on bar (15) fluted (27), be provided with the groove (27) and be arranged on by pressing spring (28), the mounting post (26)
Groove (27), described to be fixedly connected by pressing spring (28) both ends respectively at mounting post (26) with groove (27) bottom, the spring
(35) mounting post (26) is kept to stretch out groove (27) outside.
A kind of facilitate picture ellipse ruler 3. according to claim 2, it is characterised in that：Is provided with the scale (9)
One sliding groove (29), the first sliding shoe (30), described first sliding shoe (30) one end are provided with first sliding groove (29)
Stretched out from the first sliding groove, and first sliding shoe (30) stretching, first sliding groove one end is provided with and is inserted in plate for chalk
The first chalk jack (31) of straight line is drawn on body (1).
A kind of facilitate picture ellipse ruler 4. according to claim 3, it is characterised in that：Between some mounting holes (25)
The link slot (32) of insertion scale (9) is provided with, link slot (32) width is less than the diameter of mounting post (26), the installation
Pressing lever (33) is connected with post (26), pressing lever (33) diameter is less than or equal to link slot (32) width, the mounting post
(26) after completely into groove (27), mobile jib (15) position is adjusted through link slot (32) by pressing lever (33).
A kind of facilitate picture ellipse ruler 5. according to claim 4, it is characterised in that：First sliding shoe (30) is located at
Part in first sliding groove (29) is provided with recessed groove (34), and spring (35), the bullet are provided with the recessed groove (34)
Pellet (36) is provided with spring (35), the spring (35) keeps pellet (36) to stretch out recessed groove (34) outside, and described first slides
The embedded caulking groove (37) of ammunition feed (36) is provided with groove (29) inwall.
A kind of facilitate picture ellipse ruler 6. according to claim 5, it is characterised in that：Backwards to rail in the mounting groove (18)
The side of road bar is provided with the first hinge hole (40), is provided with first hinge bar (16) and coordinates with the first hinge hole (40)
The first articulated column (41), first hinge bar (16) is provided with the second hinge hole backwards to one end of the first articulated column (41)
(42), be provided with second articulated column (43) with the second hinge hole (42) be hinged the second articulated column (43), described second
Hinge bar (17) is provided with the fixing hole (44) of rectangular cross-section on the second articulated column (43), is set on the connecting rod (23)
The fix bar (46) of the rectangle in section is equipped with, the fix bar (46) is inserted into fixing hole (44), on the moving mass (20)
Section is provided with as circular perforation (45), connecting rod (23) section is circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710778427.8A CN107718954A (en) | 2017-08-31 | 2017-08-31 | It is a kind of to facilitate picture ellipse ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710778427.8A CN107718954A (en) | 2017-08-31 | 2017-08-31 | It is a kind of to facilitate picture ellipse ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107718954A true CN107718954A (en) | 2018-02-23 |
Family
ID=61204863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710778427.8A Withdrawn CN107718954A (en) | 2017-08-31 | 2017-08-31 | It is a kind of to facilitate picture ellipse ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107718954A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202985A (en) * | 2019-05-17 | 2019-09-06 | 浙江工贸职业技术学院 | A kind of mathematical education aided drawing device |
| CN112297684A (en) * | 2020-11-28 | 2021-02-02 | 河南工业职业技术学院 | Electric control drawing instrument for mathematics |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5031080Y2 (en) * | 1972-04-15 | 1975-09-10 | ||
| CH568163A5 (en) * | 1974-03-04 | 1975-10-31 | Trachsler Willy | Ellipse drawing instrument - has cycloidally moving gears and transmission member working in guide with pencil adjustment in three planes |
| JPS54161422A (en) * | 1978-06-08 | 1979-12-21 | Yoshio Nemoto | Elliptic drafter |
| US4356633A (en) * | 1981-07-27 | 1982-11-02 | Marian Poll | Ellipsograph |
| JPH01137288U (en) * | 1988-03-07 | 1989-09-20 | ||
| CN2586591Y (en) * | 2002-10-22 | 2003-11-19 | 刘浩 | Ellipsograph with curved lever and chute |
| CN202357719U (en) * | 2011-11-10 | 2012-08-01 | 山东凯文科技职业学院 | Elliptical compass |
| CN203190929U (en) * | 2013-03-16 | 2013-09-11 | 山东省特种设备检验研究院烟台分院 | Device for measuring deviation of surface shape of elliptical head |
| CN203920155U (en) * | 2014-05-04 | 2014-11-05 | 杭州师范大学 | Blackboard Combined plotting instrument |
| CN204687653U (en) * | 2015-06-02 | 2015-10-07 | 帅晓华 | Novel ellipse figure renderer |
| CN105946402A (en) * | 2016-07-21 | 2016-09-21 | 万象设计江苏有限责任公司 | Multifunctional blackboard |
-
2017
- 2017-08-31 CN CN201710778427.8A patent/CN107718954A/en not_active Withdrawn
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5031080Y2 (en) * | 1972-04-15 | 1975-09-10 | ||
| CH568163A5 (en) * | 1974-03-04 | 1975-10-31 | Trachsler Willy | Ellipse drawing instrument - has cycloidally moving gears and transmission member working in guide with pencil adjustment in three planes |
| JPS54161422A (en) * | 1978-06-08 | 1979-12-21 | Yoshio Nemoto | Elliptic drafter |
| US4356633A (en) * | 1981-07-27 | 1982-11-02 | Marian Poll | Ellipsograph |
| JPH01137288U (en) * | 1988-03-07 | 1989-09-20 | ||
| CN2586591Y (en) * | 2002-10-22 | 2003-11-19 | 刘浩 | Ellipsograph with curved lever and chute |
| CN202357719U (en) * | 2011-11-10 | 2012-08-01 | 山东凯文科技职业学院 | Elliptical compass |
| CN203190929U (en) * | 2013-03-16 | 2013-09-11 | 山东省特种设备检验研究院烟台分院 | Device for measuring deviation of surface shape of elliptical head |
| CN203920155U (en) * | 2014-05-04 | 2014-11-05 | 杭州师范大学 | Blackboard Combined plotting instrument |
| CN204687653U (en) * | 2015-06-02 | 2015-10-07 | 帅晓华 | Novel ellipse figure renderer |
| CN105946402A (en) * | 2016-07-21 | 2016-09-21 | 万象设计江苏有限责任公司 | Multifunctional blackboard |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202985A (en) * | 2019-05-17 | 2019-09-06 | 浙江工贸职业技术学院 | A kind of mathematical education aided drawing device |
| CN112297684A (en) * | 2020-11-28 | 2021-02-02 | 河南工业职业技术学院 | Electric control drawing instrument for mathematics |
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Application publication date: 20180223 |