CN204236092U - A kind of Teaching of Economics pie chart plotter - Google Patents
A kind of Teaching of Economics pie chart plotter Download PDFInfo
- Publication number
- CN204236092U CN204236092U CN201420723207.7U CN201420723207U CN204236092U CN 204236092 U CN204236092 U CN 204236092U CN 201420723207 U CN201420723207 U CN 201420723207U CN 204236092 U CN204236092 U CN 204236092U
- Authority
- CN
- China
- Prior art keywords
- expansion link
- support bar
- hollow disk
- pie chart
- backstay
- 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 relates to a kind of Teaching of Economics pie chart plotter, comprise hollow disk and backstay, bracing frame, expansion link, hollow disk is provided with 36 uniform grooves, described backstay one end is slidably connected a locator, locator is provided with projection, locating slot is embedded with inside hollow disk upper surface, groove is distributed in locating slot medial surface, hollow disk upper surface arranges bracing frame, bracing frame is N type junction structure and comprises the first support bar, cross bar and the second support bar, second support bar is arranged perpendicular to hollow circle disk center, described second support bar internal thread is connected with expansion link, described expansion link lower end is threaded and runs through the second support bar, upper end is placed in the second support bar top, described expansion link axis corresponds to hollow circle disk center, described backstay can be rotatably connected in expansion link lower end around expansion link rotationally away from one end of hollow disk.The utility model is convenient to the complete pie chart of Fast Drawing.
Description
Technical field
The utility model relates to pie chart plotting unit technical field, specifically relates to a kind of Teaching of Economics pie chart plotter.
Background technology
When Economics Courses is imparted knowledge to students, the corresponding relation between teacher needs to explain to ratio with drawing with coloured chalk pie chart on blackboard.The method of traditional painted cake figure, completely with sensation picture, cause figure inaccurate outside, also have teachers association to draw circle with general plectane of drawing, but due to the special media of blackboard, often traditional picture plectane is difficult to fixing, easily skids, not only troublesome poeration, and be not easy alignment, affect teaching efficiency.
Now in the art, Chinese utility model patent CN 203697779 U provides " Teaching of Economics pie chart renderer ", by the rotation adjusting angle of backstay, backstay is fixed by locator obtaining the protruding groove that blocks, can accurate Drawing pie chart, be equipped with a locating dowel under each support bar, ensure that the stability of the drawing of pie chart renderer; But find in specific implementation process, its hollow disk inconvenience is for drawing the unitary circular profile of complete pie chart.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Teaching of Economics pie chart plotter being convenient to the complete pie chart of Fast Drawing.
For solving the problems of the technologies described above, the utility model provides following technical scheme: a kind of Teaching of Economics pie chart plotter, comprise hollow disk and backstay, described hollow disk medial surface is provided with 36 uniform grooves, described backstay is closely slidably connected from one end of hollow disk a locator, described locator is provided with the projection with fit depressions, also comprise bracing frame, expansion link, locating slot is embedded with inside described hollow disk upper surface, the uniform locating slot medial surface of described groove, described hollow disk upper surface arranges bracing frame, support frame as described above is N type junction structure and comprises the first support bar, cross bar and the second support bar, described first support bar lower end is vertically fixedly installed on hollow disk upper surface, described cross bar one end is vertically fixedly connected on the first post upper, the other end is vertically fixedly connected on the second support bar, described second support bar is arranged perpendicular to hollow circle disk center, described second support bar internal thread is connected with expansion link, described expansion link lower end is threaded and runs through the second support bar, upper end is placed in the second support bar top, described expansion link axis corresponds to hollow circle disk center, described backstay can be rotatably connected in expansion link lower end around expansion link rotationally away from one end of hollow disk.
On such scheme basis preferably, described expansion link upper end is provided with hand holding handle.
On such scheme basis preferably, described first support bar, cross bar and the second support bar are one-body molded.
On such scheme basis preferably, described expansion link bottom is provided with rubber blanket.
On such scheme basis preferably, described backstay is rotatably connected in expansion link lower end by rotating ring, and described expansion link lower end is provided with the swivelling chute matched with rotating ring.
The beneficial effect that the utility model compared with prior art has is: wherein, hollow disk arranges bracing frame, the expansion link of adjustable and retractable length is set in the second support bar of bracing frame, expansion link lower end is rotatably connected backstay, backstay can be located the circle centre position of hollow disk by adjustable telescopic rod, rotate to facilitate backstay and position angle, relative to prior art, without the need to arranging jockey between the hollow disk circle centre position place of putting and its medial surface, and the uniform locating slot medial surface of groove, so, also hollow disk is just facilitated to utilize its medial surface to carry out drawing complete circle, and then draw complete pie chart, easy to operate and efficient.
Accompanying drawing explanation
Fig. 1 is the utility model top view;
Fig. 2 is the utility model bracing frame and hollow disk matching relationship schematic diagram.
Number in the figure is: the hollow disk of 1-, 11-locating slot, 111-groove, 2-backstay, 21-locator, 211-is protruding, 22-rotating ring, 3-bracing frame, 31-first support bar, 32-cross bar, 33-second support bar, 4-expansion link, 41-swivelling chute, 42-hand holding handle, 5-rubber blanket.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In description of the present utility model, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, it is only the utility model for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
See figures.1.and.2 known, a kind of Teaching of Economics pie chart plotter, comprise hollow disk 1 and backstay 2, described hollow disk 1 medial surface is provided with 36 uniform grooves 111, described backstay 2 is closely slidably connected from one end of hollow disk 1 locator 21, described locator 21 is provided with the projection 211 matched with groove 111, also comprise bracing frame 3, expansion link 4, locating slot 11 is embedded with inside described hollow disk 1 upper surface, described groove 111 uniform locating slot 11 medial surface, described hollow disk 1 upper surface arranges bracing frame 3, support frame as described above 3 is N type junction structure and comprises the first support bar 31, cross bar 32 and the second support bar 33, described first support bar 31 lower end is vertically fixedly installed on hollow disk 1 upper surface, described cross bar 32 one end is vertically fixedly connected on the first support bar 31 upper end, the other end is vertically fixedly connected on the second support bar 33, described second support bar 33 is arranged perpendicular to hollow disk 1 center of circle, described second support bar 33 internal thread is connected with expansion link 4, described expansion link 4 lower end is threaded and runs through the second support bar 33, upper end is placed in the second support bar 33 top, described expansion link 4 axis corresponds to hollow disk 1 center of circle, described backstay 2 can be rotatably connected in expansion link 4 lower end around expansion link 4 rotationally away from one end of hollow disk 1.
With further reference to Fig. 1, described expansion link 4 upper end is provided with hand holding handle 42, improves expansion link 4 operation convenience.
With further reference to Fig. 1, described first support bar 31, cross bar 32 and the second support bar 33 are one-body molded, improve connective stability and bracing frame 3 resistance to overturning.
With further reference to Fig. 1, described expansion link 4 bottom is provided with rubber blanket 5.Described backstay 2 is rotatably connected in expansion link 4 lower end by rotating ring 22, and described expansion link 4 lower end is provided with the swivelling chute 41 matched with rotating ring 22.
Wherein, hollow disk 1 arranges bracing frame 3, the expansion link 4 of adjustable and retractable length is set in the second support bar 33 of bracing frame 3, expansion link 4 lower end is rotatably connected backstay 2, backstay 2 can be located the circle centre position of hollow disk 1 by adjustable telescopic rod 4, rotate to facilitate backstay 2 and position angle, relative to prior art, without the need to arranging jockey between center of circle disposal place of hollow disk 1 and its medial surface, and groove 111 uniform locating slot 11 medial surface, so, also hollow disk 1 is just facilitated to utilize its medial surface to carry out drawing complete circle, and then draw complete pie chart, easy to operate and efficient.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a Teaching of Economics pie chart plotter, comprise hollow disk and backstay, described hollow disk is provided with 36 uniform grooves, described backstay is closely slidably connected from one end of hollow disk a locator, described locator is provided with the projection with fit depressions, it is characterized in that: also comprise bracing frame, expansion link, locating slot is embedded with inside described hollow disk upper surface, described groove is distributed in locating slot medial surface, described hollow disk upper surface arranges bracing frame, support frame as described above is N type junction structure and comprises the first support bar, cross bar and the second support bar, described first support bar lower end is vertically fixedly installed on hollow disk upper surface, described cross bar one end is vertically fixedly connected on the first post upper, the other end is vertically fixedly connected on the second support bar, described second support bar is arranged perpendicular to hollow circle disk center, described second support bar internal thread is connected with expansion link, described expansion link lower end is threaded and runs through the second support bar, upper end is placed in the second support bar top, described expansion link axis corresponds to hollow circle disk center, described backstay can be rotatably connected in expansion link lower end around expansion link rotationally away from one end of hollow disk.
2. a kind of Teaching of Economics pie chart plotter according to claim 1, is characterized in that: described expansion link upper end is provided with hand holding handle.
3. a kind of Teaching of Economics pie chart plotter according to claim 2, is characterized in that: described first support bar, cross bar and the second support bar are one-body molded.
4. a kind of Teaching of Economics pie chart plotter according to claim 3, is characterized in that: described expansion link bottom is provided with rubber blanket.
5. a kind of Teaching of Economics pie chart plotter according to claim 4, it is characterized in that: described backstay is rotatably connected in expansion link lower end by rotating ring, described expansion link lower end is provided with the swivelling chute matched with rotating ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420723207.7U CN204236092U (en) | 2014-11-27 | 2014-11-27 | A kind of Teaching of Economics pie chart plotter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420723207.7U CN204236092U (en) | 2014-11-27 | 2014-11-27 | A kind of Teaching of Economics pie chart plotter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204236092U true CN204236092U (en) | 2015-04-01 |
Family
ID=52765639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420723207.7U Expired - Fee Related CN204236092U (en) | 2014-11-27 | 2014-11-27 | A kind of Teaching of Economics pie chart plotter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204236092U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103615A (en) * | 2019-05-20 | 2019-08-09 | 徐秋仓 | A kind of digital drafting instrument |
-
2014
- 2014-11-27 CN CN201420723207.7U patent/CN204236092U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103615A (en) * | 2019-05-20 | 2019-08-09 | 徐秋仓 | A kind of digital drafting instrument |
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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 |
Granted publication date: 20150401 Termination date: 20151127 |