CN205344257U - Folding type spline for educational statistics - Google Patents
Folding type spline for educational statistics Download PDFInfo
- Publication number
- CN205344257U CN205344257U CN201620088150.7U CN201620088150U CN205344257U CN 205344257 U CN205344257 U CN 205344257U CN 201620088150 U CN201620088150 U CN 201620088150U CN 205344257 U CN205344257 U CN 205344257U
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- CN
- China
- Prior art keywords
- chi body
- fixing bar
- dead lever
- utility
- slide block
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a folding type spline for educational statistics, including the first chi body, the second chi body and dead lever, the one end of the first chi body and the second chi body is passed through the hinge and is rotated the connection, the other end of the first chi body is connected with first slider through first pivot, the other end of the second chi body is connected with the second slider through the second pivot, one side of dead lever is equipped with the scale, and is equipped with the slide rail on the dead lever, first slider and second slider are all installed on the slide rail of dead lever, be equipped with the locating hole on the dead lever, and locating hole through fixed pole, the opposite side of dead lever is equipped with locking device. The utility model discloses can effectively reduce the error that the statistical analysis in -process produced, simple structure can fold, conveniently carries, is fit for promoting.
Description
Technical field
This utility model relates to spline technical field, particularly relates to a kind of educational statistics folding spline.
Background technology
Educational statistics is an applied science of principle and the technique study educational problem using mathematical statistics, its main task is to study how to collect, arrange, analyze the numerical data obtained by the approach such as educational survey and educational experimentation, and on this basis, the science of carrying out deduction, thus disclosing the objective law lying in pedagogical phenomenon.In the statistics of educational statistics verifies, due to the variation of average, often to draw identical normal distribution two different positions and compare, owing to normal distribution is parabola shaped curve chart, draw two identical width figure so very difficult free-hand, and cause the error in analysis process.For this it is proposed that a kind of educational statistics folding spline, in order to solve the problems referred to above.
Summary of the invention
The purpose of this utility model is to solve the shortcoming existed in prior art, and a kind of educational statistics folding spline proposed.
To achieve these goals, this utility model adopts the technical scheme that
A kind of educational statistics folding spline, including the first chi body, second chi body and fixing bar, one end of described first chi body and the second chi body is by hinging through connection, the other end of described first chi body is connected to the first slide block by the first rotating shaft, the other end of described second chi body is connected to the second slide block by the second rotating shaft, the side of described fixing bar is provided with rule, and fixing bar is provided with slide rail, described first slide block and the second slide block are installed on the slide rail of fixing bar, described fixing bar is provided with hole, location, and location hole run through fixing bar, the opposite side of described fixing bar is provided with locking device.
Preferably, described first chi body and the second chi body are equipped with anti-wear joint strip.
Preferably, hole, described location is set in qually spaced on fixing bar, and the quantity in hole, location is 8-10.
Preferably, described locking device is lock-screw.
In this utility model, first chi body and the connection by hinge of the second chi body, coordinate the average of the mobile scalable normal distribution curve of the first slide block and the second slide block, thus drawing identical normal distribution accurately in different positions, reduce the error produced in statistical analysis process, locking device on fixing bar can fixed ruler body after chi body regulates position, ensure the accuracy drawn, the anti-wear joint strip that chi body is provided with is possible to prevent chi body to wear and tear, increasing the service life, rule facilitates reading.This utility model simple in construction, it is possible to folding convenient carries, is suitable for promoting.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of educational statistics folding spline that the utility model proposes；
Fig. 2 is the top view of a kind of educational statistics folding spline that the utility model proposes.
In figure: 1 hinge, 2 first chi bodies, 3 first rotating shafts, 4 first slide blocks, 5 second chi bodies, 6 second rotating shafts, 7 second slide blocks, 8 rules, 9 fixing bars, 10 locking devices, 11 holes, location.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.
With reference to Fig. 1-2, a kind of educational statistics folding spline, including the first chi body 2, second chi body 5 and fixing bar 9, one end of first chi body 2 and the second chi body 5 is rotationally connected by hinge 1, can the position of adjustable ruler body, identical normal distribution is drawn accurately at diverse location, reduce the error in statistical analysis process, the other end of the first chi body 2 is connected to the first slide block 4 by the first rotating shaft 3, the other end of the second chi body 5 is connected to the second slide block 7 by the second rotating shaft 6, two slide blocks slide on slide rail, the angle that adjustable ruler body opens, obtain different normal distribution curves, the side of fixing bar 9 is provided with rule 8, and fixing bar 9 is provided with slide rail, first slide block 4 and the second slide block 7 are installed on the slide rail of fixing bar 9, fixing bar 9 is provided with hole 11, location, and location hole 11 run through fixing bar 9, the opposite side of fixing bar 9 is provided with locking device 10, locking device ensures to occur without error when drawing.
In this utility model, the first chi body 2 and the second chi body 5 are equipped with anti-wear joint strip, the service life of extending ruler body.Hole 11, location is set in qually spaced on fixing bar 9, and the quantity in hole 11, location is 8-10.Locking device 10 is lock-screw, it is possible to the position of fixed ruler body, it is ensured that the accuracy of picture.
In this utility model, first chi body 2 and the second chi body 5 are rotationally connected by hinge 1, the use coordinating the first slide block 4 and the second slide block 7 can regulate the position of two chi bodies, obtain different normal distribution curves, locking device 10 locks the first slide block 4 and the second slide block 7 respectively by positioning hole 11, ensureing the accuracy drawn, the rule 8 on fixing bar 9 facilitates reading.
The above; it is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; conceive according to the technical solution of the utility model and utility model thereof and be equal to replacement or change, all should be encompassed within protection domain of the present utility model.
Claims (4)
1. an educational statistics folding spline, including the first chi body (2), second chi body (5) and fixing bar (9), it is characterized in that, one end of described first chi body (2) and the second chi body (5) is rotationally connected by hinge (1), the other end of described first chi body (2) is connected to the first slide block (4) by the first rotating shaft (3), the other end of described second chi body (5) is connected to the second slide block (7) by the second rotating shaft (6), the side of described fixing bar (9) is provided with rule (8), and fixing bar (9) is provided with slide rail, described first slide block (4) and the second slide block (7) are installed on the slide rail of fixing bar (9), described fixing bar (9) is provided with hole, location (11), and location hole (11) run through fixing bar (9), the opposite side of described fixing bar (9) is provided with locking device (10).
2. a kind of educational statistics folding spline according to claim 1, it is characterised in that be equipped with anti-wear joint strip on described first chi body (2) and the second chi body (5).
3. a kind of educational statistics folding spline according to claim 1, it is characterised in that hole, described location (11) is set in qually spaced on fixing bar (9), and the quantity of hole, location (11) is 8-10.
4. a kind of educational statistics folding spline according to claim 1, it is characterised in that described locking device (10) is lock-screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620088150.7U CN205344257U (en) | 2016-01-29 | 2016-01-29 | Folding type spline for educational statistics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620088150.7U CN205344257U (en) | 2016-01-29 | 2016-01-29 | Folding type spline for educational statistics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205344257U true CN205344257U (en) | 2016-06-29 |
Family
ID=56184469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620088150.7U Expired - Fee Related CN205344257U (en) | 2016-01-29 | 2016-01-29 | Folding type spline for educational statistics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205344257U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334309A (en) * | 2018-09-29 | 2019-02-15 | 杨钦喆 | A kind of fixed type multifunctional mapping ruler |
| CN109501495A (en) * | 2018-09-29 | 2019-03-22 | 杨钦喆 | A kind of multifunctional drawing ruler |
-
2016
- 2016-01-29 CN CN201620088150.7U patent/CN205344257U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334309A (en) * | 2018-09-29 | 2019-02-15 | 杨钦喆 | A kind of fixed type multifunctional mapping ruler |
| CN109501495A (en) * | 2018-09-29 | 2019-03-22 | 杨钦喆 | A kind of multifunctional drawing ruler |
| CN109334309B (en) * | 2018-09-29 | 2020-12-22 | 杨钦喆 | Fixed multifunctional drawing ruler |
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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: 20160629 Termination date: 20170129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |