CN201646142U - Teaching compasses - Google Patents
Teaching compasses Download PDFInfo
- Publication number
- CN201646142U CN201646142U CN2010201701769U CN201020170176U CN201646142U CN 201646142 U CN201646142 U CN 201646142U CN 2010201701769 U CN2010201701769 U CN 2010201701769U CN 201020170176 U CN201020170176 U CN 201020170176U CN 201646142 U CN201646142 U CN 201646142U
- Authority
- CN
- China
- Prior art keywords
- support bar
- slide block
- chalk
- chute
- utility
- 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, in particular to a pair of teaching compasses, which comprises a support bar, a slide block and a positioning pillar. The utility model is characterized in that the support bar is provided with a chute, the slide block is arranged in the chute, the bottom of the slide block is provided with a chalk seat, one end of the support bar is provided with a trepan bore, the support bar is fixed on the positioning pillar via the trepan bore, the bottom of the positioning pillar is provided with a magnet, and the support bar is provided with scale marks used for drawing arcs with different radii. In the use process, the compasses are fixed on a blackboard by the magnet at the bottom of the positioning pillar at one end of the support bar, a chalk is arranged at the bottom of the slide block in the chute positioned on the support bar, then the position of the slide block is adjusted by the scale marks on the support bar, the support bar rotates around the positioning pillar via the trepan bore, and at this time, the chalk on the chalk seat at the bottom of the slide block can draw a circular trace. Compared with the prior art, the utility model can draw a picture with one support bar, saves space occupied by an instrument and has the advantages of reasonable structure, convenient use and the like.
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 |
|---|---|---|---|
| CN2010201701769U CN201646142U (en) | 2010-04-26 | 2010-04-26 | Teaching compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201701769U CN201646142U (en) | 2010-04-26 | 2010-04-26 | Teaching compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201646142U true CN201646142U (en) | 2010-11-24 |
Family
ID=43111362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201701769U Expired - Fee Related CN201646142U (en) | 2010-04-26 | 2010-04-26 | Teaching compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201646142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407717A (en) * | 2011-12-05 | 2012-04-11 | 陈道伟 | Compasses with magnetic legs |
-
2010
- 2010-04-26 CN CN2010201701769U patent/CN201646142U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407717A (en) * | 2011-12-05 | 2012-04-11 | 陈道伟 | Compasses with magnetic legs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WANG JUNPENG Free format text: FORMER OWNER: ADIL Effective date: 20110727 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 264200 WEIHAI, SHANDONG PROVINCE TO: 100061 DONGCHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110727 Address after: 100061 Beijing city Dongcheng District guangqumenwai south street leading international 3-2-302 Patentee after: Wang Junpeng Address before: 264200 No. 75 middle culture Road, Shandong, Weihai Patentee before: A Dili |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20110426 |