CN2696858Y - Compasses for teaching - Google Patents
Compasses for teaching Download PDFInfo
- Publication number
- CN2696858Y CN2696858Y CN 200420031234 CN200420031234U CN2696858Y CN 2696858 Y CN2696858 Y CN 2696858Y CN 200420031234 CN200420031234 CN 200420031234 CN 200420031234 U CN200420031234 U CN 200420031234U CN 2696858 Y CN2696858 Y CN 2696858Y
- Authority
- CN
- China
- Prior art keywords
- pen hanger
- compasses
- center
- graduated scale
- scale
- 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
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a compasses for teaching which is made up of a center leather bowl 1, an adjusting screw 2 adjusting the suction of the leather bowl, a radius telescopic arm 3 with scale, a forcing off screw 4 used to fix brush clip, a pen hanger 5 and a brush 6. The leather bowl 1 connects with the graduated scale 3 through the adjusting screw 2, the slip pen hanger 5 is on the graduated scale 3, the forcing off screw 4 is on the pen hanger 5, and the brush is nipped under the pen hanger. As a consequence of adopting the leather bowl connecting to the graduated scale by the adjusting screw, the slip pen hanger being on the graduated scale, taking advantage of the difference of atmospheric pressure fixing the center of a circle to settle the problem of the existing compasses slipping, taking advantage of the telescopic arm with scale saving the steps of drawing the center of a circle only after measuring the radius, and taking advantage of the outer shell of the pen hanger being as a telescopic window of storing chalk, the utility model can measure the requisite round conveniently, decreasing the amount of labor of users conveniently and accurately.
Description
Technical field:
The utility model relates to a kind of realia, particularly a kind of compasses for teaching.
Background technology:
The compasses that use in the teaching often because the center of circle is fixing unstable, slide on blackboard at present, and radius measurement is inaccurate simultaneously, has brought trouble to teaching, has influenced quality of instruction.
Technical scheme
The purpose of this utility model is to provide a kind of compasses for teaching, the fixedly center of circle that it can be very firm, and radius is accurate, has improved teaching efficiency greatly, has improved quality of instruction.
The purpose of this utility model is to realize like this, it is made up of leather cup (1), adjustment screw (2), rule (3), jackscrew (4), pen clip (5), paintbrush (6), leather cup (1) is connected with rule (3) by adjusting screw (2), slidably pen clip (5) is arranged on rule (3), jackscrew (4) is arranged on the pen clip (5), accompany paintbrush (6) under it.
During use, fix the center of circle with the leather cup sucker, the usefulness rule links to each other with the leather cup sucker and is rotatable, pen clip shell internal memory chalk, the needed circle of can drawing.
The utility model is owing to adopted leather cup to be connected with rule by adjusting screw, slidably pen clip is arranged on rule, utilize atm difference fixedly to solve the old compasses product disadvantage of skidding in the center of circle, the telescopic arm that utilization has a scale has been saved and has been measured the step that could draw behind the radius in the circle at ordinary times, utilize the pen clip shell to do the telescopic window of depositing chalk, measure needed circle easily,, convenient, accurately, reduce user's the amount of labour.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing the utility model is further specified.
Embodiment
As shown in the figure, it is by the adjustment screw 2 of centering leather cup 1, adjustment leather cup suction size, band scale radius telescopic arm 3, fixedly the jackscrew 4 of paintbrush folder usefulness, pen clip 5, paintbrush 6 are formed, leather cup 1 is connected with rule 3 by adjusting screw 2, slidably pen clip 5 is arranged on rule 3, jackscrew 4 is arranged on the pen clip 5, accompany paintbrush 6 under it.
Claims (2)
1, a kind of compasses for teaching, it is made up of leather cup (1), adjustment screw (2), rule (3), jackscrew (4), pen clip (5), paintbrush (6), it is characterized in that: leather cup (1) is connected with rule (3) by adjusting screw (2), slidably pen clip (5) is arranged on rule (3), jackscrew (4) is arranged on the pen clip (5), accompany paintbrush (6) under it.
2, a kind of compasses for teaching according to claim 1 is characterized in that: rule (3) is scalable armed lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031234 CN2696858Y (en) | 2004-04-16 | 2004-04-16 | Compasses for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031234 CN2696858Y (en) | 2004-04-16 | 2004-04-16 | Compasses for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2696858Y true CN2696858Y (en) | 2005-05-04 |
Family
ID=34772355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420031234 Expired - Fee Related CN2696858Y (en) | 2004-04-16 | 2004-04-16 | Compasses for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2696858Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950324A (en) * | 2014-04-30 | 2014-07-30 | 电子科技大学 | Portable four-degree-of-freedom teaching compass |
-
2004
- 2004-04-16 CN CN 200420031234 patent/CN2696858Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950324A (en) * | 2014-04-30 | 2014-07-30 | 电子科技大学 | Portable four-degree-of-freedom teaching compass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |