CN202443690U - Pie diagram demonstrator - Google Patents
Pie diagram demonstrator Download PDFInfo
- Publication number
- CN202443690U CN202443690U CN2012200555637U CN201220055563U CN202443690U CN 202443690 U CN202443690 U CN 202443690U CN 2012200555637 U CN2012200555637 U CN 2012200555637U CN 201220055563 U CN201220055563 U CN 201220055563U CN 202443690 U CN202443690 U CN 202443690U
- Authority
- CN
- China
- Prior art keywords
- demonstrator
- fan
- pie diagram
- newel
- rotary
- 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
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- Instructional Devices (AREA)
Abstract
The utility model provides a pie diagram demonstrator, and belongs to the field of teaching aids. The pie diagram demonstrator structurally comprises a dial, a central column is perpendicularly arranged in the center of the dial, a plurality of rotary pointers are disposed on the central column in an overlapped manner, and scale marks are drawn or engraved around the central column to form a circle with the radius equal to the length of each rotary pointer. Compared with the prior art, the pie diagram demonstrator is reasonable in design, simple in structure and convenient to use, and a user can freely turn the rotary pointer to make a pie diagram as needed.
Description
(1) technical field
The utility model relates to a kind of teaching aid, specifically a kind of fan-shaped statistical graph demonstration device.
(2) background technology
In the field research process, the teacher generally is to draw on blackboard with chalk when the fan-shaped statistical graph of demonstration, not only lose time, and inaccurate.
(3) summary of the invention
The technical assignment of the utility model is the deficiency to prior art, provides a kind of simple in structure, easy to operate fan-shaped statistical graph demonstration device.
The utility model solves the technical scheme that its technical matters adopted:
Fan-shaped statistical graph demonstration device comprises index dial, and the centre of said index dial is vertically installed with newel, and overlapping several rotary indicators that is provided with on the newel are the center of circle with the newel, is that scale mark is drawn or be carved with to radius with the length of rotary indicator.
Said index dial is disc, rectangular parallelepiped, square or ellipsoid.
The quantity of said rotary indicator is 5-10.
The fan-shaped statistical graph demonstration device of the utility model compared with prior art, the beneficial effect that is produced is:
The utility model is reasonable in design, and is simple in structure, easy to use, and the user can freely rotate rotary indicator as required, makes fan-shaped statistical graph.
(4) description of drawings
Accompanying drawing 1 is the structural representation of the utility model;
Accompanying drawing 2 is the syndeton synoptic diagram of rotary indicator and newel among Fig. 1;
Accompanying drawing 3 is looked or right TV structure synoptic diagram for the left side of Fig. 2.
Among the figure, 1, index dial, 2, newel, 3, rotary indicator, 4, scale mark.
(5) embodiment
Explanation at length below below in conjunction with accompanying drawing the fan-shaped statistical graph demonstration device of the utility model being done.
Shown in accompanying drawing 1-3; The fan-shaped statistical graph demonstration device of the utility model, its structure comprises index dial 1, said index dial 1 is a disc; The centre of said index dial 1 is vertically installed with newel 2; Overlappingly on the newel 2 being provided with 10 rotary indicators 3, is the center of circle with newel 2, is that radius is drawn scale mark 4 is arranged with the length of rotary indicator 3.
Fan-shaped its processing and fabricating of statistical graph demonstration device of the utility model is simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.
Except that the described technical characterictic of instructions, be the known technology of those skilled in the art.
Claims (3)
1. fan-shaped statistical graph demonstration device; Comprise index dial (1); It is characterized in that the centre of said index dial (1) is vertically installed with newel (2), newel (2) is gone up overlapping several rotary indicators (3) that are provided with; With newel (2) is the center of circle, is that scale mark (4) is drawn or be carved with to radius with the length of rotary indicator (3).
2. fan-shaped statistical graph demonstration device according to claim 1 is characterized in that said index dial (1) is disc, rectangular parallelepiped, square or ellipsoid.
3. fan-shaped statistical graph demonstration device according to claim 1 is characterized in that, the quantity of said rotary indicator (3) is 5-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200555637U CN202443690U (en) | 2012-02-21 | 2012-02-21 | Pie diagram demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200555637U CN202443690U (en) | 2012-02-21 | 2012-02-21 | Pie diagram demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202443690U true CN202443690U (en) | 2012-09-19 |
Family
ID=46825128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200555637U Expired - Fee Related CN202443690U (en) | 2012-02-21 | 2012-02-21 | Pie diagram demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202443690U (en) |
-
2012
- 2012-02-21 CN CN2012200555637U patent/CN202443690U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20130221 |