CN201769557U - Teaching compass - Google Patents
Teaching compass Download PDFInfo
- Publication number
- CN201769557U CN201769557U CN2010202426966U CN201020242696U CN201769557U CN 201769557 U CN201769557 U CN 201769557U CN 2010202426966 U CN2010202426966 U CN 2010202426966U CN 201020242696 U CN201020242696 U CN 201020242696U CN 201769557 U CN201769557 U CN 201769557U
- Authority
- CN
- China
- Prior art keywords
- compass
- chalk
- compasses
- leg
- circle center
- 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 relates to a teaching aid, in particular to a teaching compass comprising a sucking disc arranged at the tail end of a compass circle center leg and a propelled chalk fixing apparatus arranged at a compass brush leg. The propelled chalk fixing apparatus consists of a propelling end and a brush storage slot that are in threaded connection. The compass circle center leg can be quickly fixed on a blackboard through the sucking disc at the tail end of the compass circle center leg. Meanwhile, chalk is fixed at the compass brush leg, thus being convenient for fixing and replacement.
Description
Technical field
The utility model relates to teaching aid, relates in particular to a kind of educational compasses.
Background technology
In daily teaching, be the problem that a lot of teachers fully feel headache at the teaching schematic diagram of blackboard upper drawing circle shape.Traditional teaching is often finished with the large-scale educational compasses of tradition, and shortcoming is that the center of circle is difficult for fixing, and chalk is difficult for fixing.
The utility model content
The utility model is at the existing in prior technology shortcoming, and a kind of technical scheme of educational compasses is provided, and use the fixedly center of circle that this scheme can be firm fast, and need not fixedly chalk in drafting, and it is convenient and swift to change chalk.
The utility model is realized by following technical measures:
A kind of educational compasses, compasses Gauge for the centre of a circle pin end is provided with sucker, and compasses paintbrush rule pin is provided with pusher chalk fixator, and pusher chalk fixator is by advancing end and pen storage tank to form.Advance end and pen storage tank by being threaded.
The beneficial effect of this programme can be learnt according to the narration to such scheme, can fast the Gauge for the centre of a circle pin be fixed on the blackboard by the sucker of advising Gauge for the centre of a circle pin end.Chalk is fixed on paintbrush rule pin simultaneously, is convenient to fix and change conveniently.
Description of drawings
Fig. 1 is a structure schematic diagram of the present utility model.
Wherein 1 is sucker, and 2 is pusher chalk fixator, and 3 for advancing end, and 4 is pen storage tank.
The specific embodiment
For clearly demonstrating the technical characterstic of this programme,, and, this programme is set forth in conjunction with its accompanying drawing below by a specific embodiment.
A kind of educational compasses, compasses Gauge for the centre of a circle pin end is provided with sucker 1, and compasses paintbrush rule pin is provided with pusher chalk fixator 2, and pusher chalk fixator is by advancing end 3 and pen storage tank 4 to form.Advance end 3 and pen storage tank 4 by being threaded.
During use, chalk is placed in the pen storage tank 4 of paintbrush rule pin, by the propelling end 3 of rotating propulsion type chalk fixator 2, chalk is adjusted to suitable length, simultaneously the sucker on the Gauge for the centre of a circle pin 1 is fixed on the blackboard, adjusts suitable distance, on blackboard, draw circular pattern fast.
Claims (3)
1. educational compasses, it is characterized in that: described compasses Gauge for the centre of a circle pin end is provided with sucker, and compasses paintbrush rule pin is provided with pusher chalk fixator.
2. a kind of educational compasses according to claim 1 is characterized in that: described pusher chalk fixator is by advancing end and pen storage tank to form.
3. a kind of educational compasses according to claim 2 is characterized in that: described propelling end and pen storage tank are by being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202426966U CN201769557U (en) | 2010-06-30 | 2010-06-30 | Teaching compass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202426966U CN201769557U (en) | 2010-06-30 | 2010-06-30 | Teaching compass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201769557U true CN201769557U (en) | 2011-03-23 |
Family
ID=43749395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202426966U Expired - Fee Related CN201769557U (en) | 2010-06-30 | 2010-06-30 | Teaching compass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201769557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815145A (en) * | 2012-08-15 | 2012-12-12 | 健雄职业技术学院 | Multifunctional compass |
-
2010
- 2010-06-30 CN CN2010202426966U patent/CN201769557U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815145A (en) * | 2012-08-15 | 2012-12-12 | 健雄职业技术学院 | Multifunctional compass |
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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: 20110323 Termination date: 20110630 |