CN202685686U - Compass ruler for mathematics teaching - Google Patents
Compass ruler for mathematics teaching Download PDFInfo
- Publication number
- CN202685686U CN202685686U CN 201220361046 CN201220361046U CN202685686U CN 202685686 U CN202685686 U CN 202685686U CN 201220361046 CN201220361046 CN 201220361046 CN 201220361046 U CN201220361046 U CN 201220361046U CN 202685686 U CN202685686 U CN 202685686U
- Authority
- CN
- China
- Prior art keywords
- slide block
- ruler
- chute
- compass
- fixator
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a compass ruler for mathematics teaching. The compass ruler comprises a straight ruler (1), and is characterized in that a chute (2) is formed in the middle of the straight ruler (1); two slide blocks (3) are arranged in the chute (2); a scale pointer (5) is respectively arranged on the upper part of each slide block (3); a telescopic positioning needle (4) is arranged on the lower part of the left-end slide block (3); a chalk holder (6) is arranged on the lower part of the right-end slide block (3); and a fixing device (7) is arranged on a side wall at the right end of each slide block (3) and on a part which corresponds to the chute (2). By adoption of the structure, the effects that the compass ruler is convenient to use and can serve as a straight ruler and the center of a circle can be fixed on a plane are achieved.
Description
Technical field
The utility model relates to a kind of auxiliary mathematics teaching appliance, relates in particular to a kind of compass for math teaching chi.
Background technology
Mathematical education is often used compasses and ruler teaching aid at present, because the two separation and Performance Ratio are more single, needs repeatedly to change the mapping apparatus in the blackboard mapping in the mathematical education process, so not only wastes time and energy, and has wasted valuable instructional blocks of time.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, and is easy to use, the center of circle can be fixed on the compass for math teaching chi that also can double as ruler on the plane.
The technical solution of the utility model is a kind of compass for math teaching chi, it comprises ruler 1, it is characterized in that: be provided with chute 2 in the centre of described ruler 1, in described chute 2, be provided with two slide blocks 3, be respectively equipped with tuning drive gear 5 on the top of described each slide block 3, be provided with flexible pilot pin 4 in the bottom of described left end slide block 3, be provided with chalk holder 6 in the bottom of described right-hand member slide block 3, on the sidewall of described each slide block 3 right-hand member and with the corresponding section, position of described chute 2, be respectively equipped with fixator 7.
The technical solution of the utility model can also be that described fixator 7 is comprised of rotating shaft and eccentric disc, and the center of circle that described eccentric disc is passed in described rotating shaft is fixed on the sidewall of described slide block 3.
The beneficial effects of the utility model are to be provided with chute 2 by the centre at described ruler 1, in described chute 2, be provided with two slide blocks 3, be respectively equipped with tuning drive gear 5 on the top of described each slide block 3, be provided with flexible pilot pin 4 in the bottom of described left end slide block 3, be provided with chalk holder 6 in the bottom of described right-hand member slide block 3, on the sidewall of described each slide block 3 right-hand member and with the corresponding section, position of described chute 2, be respectively equipped with fixator 7, during use, ruler 1 can be used as ruler and makes straight line or oblique line, owing to be provided with chute 2 in the centre of ruler 1, slide block 3 is in chute 2 interior movements, flexible pilot pin 4 on the slide block 3 is fixed on the blackboard, determine the position of chalk holder 6 by the required radius length of tuning drive gear 5 usefulness, pass through again fixedly slide block 3 of fixator 7, just can draw circle around 4 rotations of flexible pilot pin, realize easy to usely, the center of circle can be fixed on the plane and can double as the effect that ruler uses.
Description of drawings
Fig. 1 is structure chart of the present utility model
Among Fig. 11, ruler, 2, chute, 3, slide block, 4, flexible pilot pin, 5, tuning drive gear, 6, chalk holder, 7, fixator.
The specific embodiment
According to Fig. 1, shown in 2, the utility model relates to a kind of compass for math teaching chi, it comprises ruler 1, be provided with chute 2 in the centre of described ruler 1, in described chute 2, be provided with two slide blocks 3, be respectively equipped with tuning drive gear 5 on the top of described each slide block 3, be provided with flexible pilot pin 4 in the bottom of described left end slide block 3, be provided with chalk holder 6 in the bottom of described right-hand member slide block 3, on the sidewall of described each slide block 3 right-hand member and with the corresponding section, position of described chute 2, be respectively equipped with fixator 7, described fixator 7 is comprised of rotating shaft and eccentric disc, and the center of circle that described eccentric disc is passed in described rotating shaft is fixed on the sidewall of described slide block 3; During use, ruler 1 can be used as ruler and makes straight line or oblique line, owing to be provided with chute 2 in the centre of ruler 1, slide block 3 is in chute 2 interior movements, flexible pilot pin 4 on the slide block 3 is fixed on the blackboard, determine the position of chalk holder 6 by the required radius length of tuning drive gear 5 usefulness, by the rotation of the eccentric disc on the fixator 7 and upper wall or the lower wall tight fit of chute 2 slide block 3 is fixed again, just can draw circle around flexible pilot pin 4 rotations, realized easy to usely, the center of circle can be fixed on the plane and can double as the effect that ruler uses.
Claims (2)
1. compass for math teaching chi, it comprises ruler (1), it is characterized in that: be provided with chute (2) in the centre of described ruler (1), in described chute (2), be provided with two slide blocks (3), be respectively equipped with tuning drive gear (5) on the top of described each slide block (3), be provided with flexible pilot pin (4) in the bottom of described left end slide block (3), be provided with chalk holder (6) in the bottom of described right-hand member slide block (3), on the sidewall of described each slide block (3) right-hand member and with the corresponding section, position of described chute (2), be respectively equipped with fixator (7).
2. compass for math teaching chi according to claim 1, it is characterized in that: described fixator (7) is comprised of rotating shaft and eccentric disc, and the center of circle that described eccentric disc is passed in described rotating shaft is fixed on the sidewall of described slide block (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361046 CN202685686U (en) | 2012-07-16 | 2012-07-16 | Compass ruler for mathematics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361046 CN202685686U (en) | 2012-07-16 | 2012-07-16 | Compass ruler for mathematics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202685686U true CN202685686U (en) | 2013-01-23 |
Family
ID=47541349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220361046 Expired - Fee Related CN202685686U (en) | 2012-07-16 | 2012-07-16 | Compass ruler for mathematics teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202685686U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818577A (en) * | 2016-04-22 | 2016-08-03 | 王立云 | Straight ruler with circle drawing function |
| CN112248693A (en) * | 2020-10-22 | 2021-01-22 | 潍坊科技学院 | Combined plotter for mathematical education |
-
2012
- 2012-07-16 CN CN 201220361046 patent/CN202685686U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818577A (en) * | 2016-04-22 | 2016-08-03 | 王立云 | Straight ruler with circle drawing function |
| CN112248693A (en) * | 2020-10-22 | 2021-01-22 | 潍坊科技学院 | Combined plotter for mathematical education |
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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: 20130123 Termination date: 20130716 |