CN204249651U - A kind of mathematical education white board compasses - Google Patents
A kind of mathematical education white board compasses Download PDFInfo
- Publication number
- CN204249651U CN204249651U CN201420656749.7U CN201420656749U CN204249651U CN 204249651 U CN204249651 U CN 204249651U CN 201420656749 U CN201420656749 U CN 201420656749U CN 204249651 U CN204249651 U CN 204249651U
- Authority
- CN
- China
- Prior art keywords
- bar
- long
- armed
- galianconism
- white 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.)
- Expired - Fee Related
Links
Abstract
The utility model provides a kind of mathematical education white board compasses, comprise a long-armed bar of linear, a linear galianconism bar and the loop bar for installing white board marker, the afterbody of long-armed bar and galianconism bar is hinged, angle between long-armed bar and galianconism bar is 0 ~ 180 °, galianconism lever arm bar and loop bar are fixed, and long-armed boom end arranges positioning component, and positioning component is flexibly connected with long-armed boom end by connecting ball.White board compasses in the utility model arranges positioning component by long-armed boom end and realizes drawing circle on blank, its structure is simple, easy grasp, positioning component main body is sucker, sucker center is fixedly installed magnet, on blank, carrying out Primary Location by magnet, consolidate with rubber suction cups more afterwards, ensureing that compasses are not run easily when drawing circular pattern.
Description
Technical field:
The utility model relates to a kind of tutor auxiliary platform apparatus, particularly relates to a kind of mathematical education white board compasses.
Background technology:
Compasses, in mathematics and drawing, are used to the instrument drawing circle or string, are usually used in construction with ruler and compasses.The invention of compasses can trace back to the Chinese Xia dynasty the earliest, " Records of the Historian. Xia Benji " ", when carrying four, to open nine divisions of China in remote antiquity, Tong Jiudao, pool, pond nine, spends nine mountains for left criterion, right rule to carry Dayu's water control.", in the inscriptions on bones or tortoise shells of B.C. the 15th century, existing rule, square two word, be called " rule ", i.e. the compasses of today at that time, " all gifts. examine work note. artisan " record: " artisan founds the state, and Yi, with outstanding, is put to hang in level land, depending on scape.For rule, the scape knowing sunrise and the scape entered day.Join the scape of all Japan and China daytime, the pole star examined night, with positive morning and evening.”。Have " Eastern Han Dynasty's Fuxi Chinese mythology goddess brick engraving picture " in the military beam ancestral temple in Jiaxiang, Shandong, wherein Chinese mythology goddess holds rule, and Fuxi holds square, and rule are here palaiotype trammels, and shape is similar to the font in the inscriptions on bones or tortoise shells " last of the ten Heavenly stems ".Paint round drawing instrument.Have two pin, upper end thereof, lower end can arbitrarily separate or close up, to adjust the size of painted arc radius.The end of a pin is needle point, and the end of another pin can load the pin painting pencil line or the line of ink marker.Extension rod loaded onto by some compasses, can draw larger circle.There are trammel, springer bow and heart bow compasses etc. of living.
Traditional drawing for compasses can be utilized for blackboard, during use, chalk is installed, chalk draws circle on blackboard, and therefore, this existing compasses for teaching is substantially all under being applicable to black board teaching situation, but along with the progress of science and technology, the growth in the living standard of people, the problem that during blackboard writing, dust is large causes increasing people to use blank, and the compasses for teaching that people are usual in the past can not meet the requirement that blank uses.
Utility model content:
In order to solve the problem, the utility model provides a kind of blank that is applicable to and uses, and structure is simple, stable when drawing circular, holds wield mathematical education white board compasses.
A kind of mathematical education white board compasses, comprise a long-armed bar of linear, a linear galianconism bar and the loop bar for installing white board marker, the afterbody of long-armed bar and galianconism bar is hinged, angle between long-armed bar and galianconism bar is 0 ~ 180 °, galianconism lever arm bar and loop bar are fixed, and long-armed boom end arranges positioning component, and positioning component is flexibly connected with long-armed boom end by connecting ball.
As preferably, positioning component comprises connection club, connect ball, connect ball seat, magnet and sucker, connect club and be connected ball and be fixedly connected with, connect ball be connected ball seat suitable and can activity and do not come off, connect ball seat and be fixedly connected on middle position outside described sucker, magnet is arranged on and connects bottom ball seat, is placed in sucker centre position.
As preferably, the afterbody place of being hinged of long-armed bar and galianconism bar is provided with positioning knob, and described positioning knob is arranged on the connecting axle of long-armed bar and galianconism bar.
As preferably, on long-armed bar and galianconism bar, corresponding side surface is provided with rule.
The beneficial effects of the utility model are:
(1) white board compasses in the utility model arranges positioning component by long-armed boom end and realizes drawing circle on blank, and its structure is simple, easily grasps.
(2) in utility model, positioning component main body is rubber suction cups, rubber suction cups center is fixedly installed magnet, on blank, carrying out Primary Location by magnet, consolidate with sucker more afterwards, ensureing that compasses are not run easily when drawing circular pattern.
(3) the afterbody place of being hinged of long-armed bar and galianconism bar is provided with positioning knob, and the structure further stablizing compasses entirety reaches the more regular effect of the circular pattern that draws.
(4) on long-armed bar and galianconism bar, corresponding side surface is provided with rule, and when long-armed bar and galianconism bar are opened to 180 °, compasses can also serve as ruler and use.
Accompanying drawing illustrates:
Fig. 1 is the utility model structural representation;
Fig. 2 is positioning component detail view.
Detailed description of the invention:
For making goal of the invention of the present utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1, mathematical education white board compasses, comprise a long-armed bar 1 of linear, a linear galianconism bar 2 and the loop bar 3 for installing white board marker, long-armed bar 1 is hinged with the afterbody of galianconism bar 2, and the angle between long-armed bar 1 and galianconism bar 2 is 0 ~ 180 °, and galianconism bar 2 armed lever and loop bar 3 are fixed, long-armed bar 1 end arranges positioning component 4, and positioning component 4 is flexibly connected with long-armed bar 1 end by connecting ball 5.Arrange positioning component by long-armed bar 1 end and realize drawing circle on blank, its structure is simple, easily grasps.Long-armed bar 1 is provided with positioning knob 6 with the afterbody place of being hinged of galianconism bar 2, and described positioning knob 6 is arranged on long-armed bar 1 with on the connecting axle of galianconism bar 2.The structure further stablizing compasses entirety reaches the more regular effect of the circular pattern that draws.
In addition, long-armed bar 1 is provided with rule 7 with corresponding side surface on galianconism bar 2, and when long-armed bar 1 is opened to 180 ° with galianconism bar 2, compasses can also serve as ruler and use, and extend the function of this white board compasses.
As shown in Figure 2, positioning component 4 comprises and connects club 8, connect ball 5, connect ball seat 9, magnet 10 and sucker 11, connect club 8 and be connected ball 5 and be fixedly connected with, connect ball 5 be connected ball seat 9 suitable and can activity and do not come off, connect ball seat 9 and be fixedly connected on middle position outside sucker 11, magnet 10 is arranged on and connects bottom ball seat 9, is placed in sucker 11 centre position, carries out Primary Location by magnet 10 on blank, consolidating with sucker more afterwards, ensureing that compasses are not run easily when drawing circular pattern.
Above-described embodiment is preferred embodiment of the present utility model; it is not the restriction to technical solutions of the utility model; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (4)
1. a mathematical education white board compasses, comprise a long-armed bar of linear, a linear galianconism bar and the loop bar for installing white board marker, the afterbody of long-armed bar and galianconism bar is hinged, angle between long-armed bar and galianconism bar is 0 ~ 180 °, galianconism lever arm bar and loop bar are fixed, and it is characterized in that: described long-armed boom end arranges positioning component, and positioning component is flexibly connected with long-armed boom end by connecting ball.
2. a kind of mathematical education white board compasses according to claim 1, is characterized in that: described positioning component comprises connection club, connects ball, connects ball seat, magnet and sucker;
Described connection club is fixedly connected with the described ball that is connected, and connects ball and to be connected ball seat suitable and can be movable and do not come off, and connection ball seat is fixedly connected on middle position outside described sucker, and magnet is arranged on bottom connection ball seat, is placed in sucker centre position.
3. a kind of mathematical education white board compasses according to claim 1, is characterized in that: the afterbody place of being hinged of described long-armed bar and galianconism bar is provided with positioning knob, and described positioning knob is arranged on the connecting axle of long-armed bar and galianconism bar.
4. a kind of mathematical education white board compasses according to claim 1, is characterized in that: on described long-armed bar and galianconism bar, corresponding side surface is provided with rule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420656749.7U CN204249651U (en) | 2014-10-31 | 2014-10-31 | A kind of mathematical education white board compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420656749.7U CN204249651U (en) | 2014-10-31 | 2014-10-31 | A kind of mathematical education white board compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204249651U true CN204249651U (en) | 2015-04-08 |
Family
ID=52953992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420656749.7U Expired - Fee Related CN204249651U (en) | 2014-10-31 | 2014-10-31 | A kind of mathematical education white board compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204249651U (en) |
-
2014
- 2014-10-31 CN CN201420656749.7U patent/CN204249651U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204249651U (en) | A kind of mathematical education white board compasses | |
| CN204007608U (en) | A kind of for controlling the level angle measurement mechanism of ship surface moulding bed angle of assembling | |
| CN202986529U (en) | Portable compass | |
| CN203087927U (en) | Tool box for mathematics | |
| CN204398673U (en) | A kind of Graduated compasses | |
| CN206914007U (en) | A kind of mathematical education drawing rule | |
| CN206678644U (en) | A kind of multifunctional teaching compasses | |
| CN204894896U (en) | Take multi -functional teaching compasses of protractor | |
| CN202650348U (en) | Single pendulum frequency and pendulum length experimental instrument | |
| CN206231102U (en) | A kind of Multi-function stationery rule | |
| CN205553702U (en) | Scriber used for english language teaching | |
| CN205033799U (en) | Practical compass teaching aid | |
| CN205588827U (en) | Law teaching book end | |
| CN205523251U (en) | Sucking disc formula compasses for advanced math teaching | |
| CN201736654U (en) | Compasses for drawing on blackboard | |
| CN205338267U (en) | Teaching blackboard convenient to remove and place | |
| CN202413155U (en) | Integrated compass | |
| CN202293913U (en) | Math teaching aid | |
| CN201218993Y (en) | Teaching stick | |
| CN209103579U (en) | A kind of childish ignorance letter training plate for formative education | |
| CN207984406U (en) | A kind of combined compasses | |
| CN206841013U (en) | Drawing ruler | |
| CN204055074U (en) | A kind of compasses drawing ellipse | |
| CN204160964U (en) | A kind of compasses drawing ellipse | |
| CN204977961U (en) | Teaching ruler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20161031 |