CN201721209U - Teaching compasses - Google Patents
Teaching compasses Download PDFInfo
- Publication number
- CN201721209U CN201721209U CN2010202506180U CN201020250618U CN201721209U CN 201721209 U CN201721209 U CN 201721209U CN 2010202506180 U CN2010202506180 U CN 2010202506180U CN 201020250618 U CN201020250618 U CN 201020250618U CN 201721209 U CN201721209 U CN 201721209U
- Authority
- CN
- China
- Prior art keywords
- support lever
- slide rod
- support bar
- positioning column
- chalk
- 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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Abstract
The utility model relates to a drawing tool, specifically a teaching compass, including a support lever, a slide rod and a positioning column, which is characterized in that a sliding chute is arranged on the support lever, a slide rod is provided in the sliding chute, a chalk seat is arranged at the bottom of the slide rod, one end of the support lever is provided with trepan boring, the support lever is fixed on the positioning column through the trepan boring, a magnet is arranged on the bottom of the positioning column, scale lines are arranged on the support lever for realizing map making of different radius, in the use process, the compass is fixed on the blackboard through a magnet at the bottom of one terminal positioning column of the support lever, chalks are loaded at the bottom of the slide rod located in the sliding chute of the support lever, and the graduation on the support lever is used, to modulate the position of the slide rod, the support lever rotates around the positioning column through the trepan boring, at this point, a circular trace is drawn by the chalk on the chalk seat on the bottom of the slide rod. The utility model, compared with the existing technology, can realize drawing operations by one support lever, save the space occupied by the instrument, and has reasonable structure, easy operation, and other significant advantages.
Description
Technical field
The utility model relates to a kind of drawing tools, is a kind of educational compasses specifically.
Background technology
As everyone knows, compasses are a kind of apparatus commonly used in the teaching, and existing compasses generally are provided with two support bars, and one of them is used for the location, and another is provided with groove, can place chalk or pencil etc. in groove during use, draws.But existing compasses complicated operation, and positioning supports bar locating effect is poor, causes complicated operation in the picture process.
Summary of the invention
The utility model proposes a kind of educational compasses simple in structure, easy to use at the deficiencies in the prior art,
A kind of educational compasses comprises support bar, slide block and reference column, it is characterized in that support bar is provided with chute, be provided with slide block in the chute, slider bottom is provided with the chalk seat, and an end of support bar is provided with trepanning, support bar is fixed on the reference column through trepanning, and the reference column bottom is provided with magnet.
The utility model can be provided with graduation mark on support bar, be used to realize the drawing of the circular arc of different radii.
The utility model in use, magnet by support bar one end reference column bottom is fixed on compasses on the blackboard, and load onto chalk at the slider bottom of the chute that is positioned at support bar, use the scale on the support bar then, the position of adjusting slider, and support bar is rotated around reference column through trepanning, chalk on this moment slider bottom chalk seat circular trace of can drawing, the utility model compared with prior art, can realize the operation of drawing by a support bar, save the apparatus occupation space, had significant advantages such as rational in infrastructure, easy to use.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
Accompanying drawing 2 is structural representations of support bar in the utility model.
Description of drawings: support bar 1, slide block 2, reference column 3, chalk seat 4, magnet 5, chute 6, graduation mark 7
The specific embodiment:
A kind of educational compasses, comprise support bar 1, slide block 2 and reference column 3, it is characterized in that support bar 1 is provided with chute 6, be provided with slide block 2 in the chute 6, slide block 2 bottoms are provided with chalk seat 4, one end of support bar 1 is provided with trepanning, and support bar 1 is fixed on the reference column 3 through trepanning, and reference column 3 bottoms are provided with magnet 5.
The utility model can be provided with graduation mark 7 on support bar 1, be used to realize the drawing of the circular arc of different radii.
The utility model in use, magnet 5 by support bar 1 one end reference columns 3 bottoms is fixed on compasses on the blackboard, and load onto chalk at the chalk seat 4 of chute 6 inner slides 2 bottoms that are positioned at support bar 1, use the graduation mark 7 on the support bar 1 then, the position of adjusting slider 2, when drawing, support bar 1 is rotated around reference column 3 through trepanning, chalks in this moment slide block 2 bottom chalk seats 4 circular trace of can drawing is finished using, and the chalks in the chalk seat 4 are pulled down, the utility model compared with prior art, can realize the operation of drawing by a support bar, save the apparatus occupation space, have rational in infrastructure, the significant advantage of grade easy to use.
Claims (2)
1. an educational compasses comprises support bar, slide block and reference column, it is characterized in that support bar is provided with chute, be provided with slide block in the chute, slider bottom is provided with the chalk seat, and an end of support bar is provided with trepanning, support bar is fixed on the reference column through trepanning, and the reference column bottom is provided with magnet.
2. a kind of educational compasses according to claim 1 is characterized in that being provided with graduation mark on support bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202506180U CN201721209U (en) | 2010-07-08 | 2010-07-08 | Teaching compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202506180U CN201721209U (en) | 2010-07-08 | 2010-07-08 | Teaching compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201721209U true CN201721209U (en) | 2011-01-26 |
Family
ID=43489503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202506180U Expired - Fee Related CN201721209U (en) | 2010-07-08 | 2010-07-08 | Teaching compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201721209U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105774332A (en) * | 2016-05-13 | 2016-07-20 | 安庆师范学院 | Novel multifunctional teaching compasses |
-
2010
- 2010-07-08 CN CN2010202506180U patent/CN201721209U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105774332A (en) * | 2016-05-13 | 2016-07-20 | 安庆师范学院 | Novel multifunctional teaching compasses |
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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: 20110126 Termination date: 20110708 |