CN203974326U - A kind of novel bow compass - Google Patents
A kind of novel bow compass Download PDFInfo
- Publication number
- CN203974326U CN203974326U CN201420467916.3U CN201420467916U CN203974326U CN 203974326 U CN203974326 U CN 203974326U CN 201420467916 U CN201420467916 U CN 201420467916U CN 203974326 U CN203974326 U CN 203974326U
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- dead axle
- disk
- bow compass
- novel bow
- 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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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a kind of novel bow compass, belong to schooling apparatus field, comprise a kind of novel bow compass, comprise dead axle and rotating shaft, it is characterized in that: described rotating shaft and described dead axle are hinged, be provided with positioner at described dead axle two ends, on described dead axle, be provided with disk, on described disk, be respectively equipped with limited block and angle index line, described limited block can slide arbitrarily on described disk, in described rotating shaft, be respectively equipped with slide block and length graduation mark, on described slide block, be provided with paintbrush hole, in described rotating shaft, be provided with multiple slide blocks, the not only complete concentric circles drawing more than two and two once of the utility model, but also can draw accurately radius and the angle of required circular arc, and can also be used to measure the size of other figure.
Description
Technical field
The utility model relates to a kind of schooling apparatus, especially a kind of novel bow compass.
Background technology
Compasses are in mathematics and drawing, it is the instrument for draw circles or string, be usually used in construction with ruler and compasses, compasses are no matter be used in school or industrial at present, all have the following disadvantages: 1, traditional compasses all can only play the effect of picture circle or words camber line, need to go to measure with ruler for radius of a circle, it be measured need to use protractor for the angle of camber line, and very trouble operates; If 2 need to draw concentric circles time, need to draw respectively twice, and drawn concentric circles accuracy is not high, has wasted a large amount of time and efforts, serious reduction operating efficiency; 3, traditional compasses cannot draw and have the fan-shaped of accurate dimension.
Summary of the invention
Technical assignment of the present utility model is for above the deficiencies in the prior art, and a kind of novel bow compass is provided.
The utility model solves the technical scheme that its technical problem adopts: a kind of novel bow compass, comprise dead axle and rotating shaft, wherein said rotating shaft and described dead axle are hinged, be provided with positioner at described dead axle two ends, on described dead axle, be provided with disk, be respectively equipped with limited block and angle index line on described disk, described limited block can slide arbitrarily on described disk, in described rotating shaft, be respectively equipped with slide block and length graduation mark, on described slide block, be provided with paintbrush hole.
In described rotating shaft, be provided with multiple slide blocks.
Described rotating shaft is positioned at described dead axle top.
The utility model has the advantages that: 1, in the time drawing, can directly determine the radius size of circular arc and the angle of circular arc, not need to go with ruler and protractor again the size of definite size; 2, can draw two and plural concentric circles, and precision is high simultaneously; 3, do not need to change other apparatus and just can complete fan-shaped drawing, and can also be used to measure the size of other figure.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Detailed description of the invention
Below in conjunction with Figure of description, the utility model is described below.
As shown in Figure 1, a kind of novel bow compass, comprise dead axle 2 and rotating shaft 6, wherein said rotating shaft 6 is hinged with described dead axle 2, be provided with positioner 1 at described dead axle 2 two ends, on described dead axle 2, be provided with disk 3, on described disk 3, be respectively equipped with limited block 5 and angle index line 4, described limited block 5 can slide arbitrarily on described disk 3, in described rotating shaft 6, be respectively equipped with slide block 8 and length graduation mark 7, on described slide block 8, be provided with paintbrush hole 9, in described rotating shaft 6, multiple slide blocks 8 can be set, described rotating shaft 6 is positioned at described dead axle 2 tops.
Its operation principle is: first the positioner on dead axle 21 is fixed in the plane in use, then sliding slider 8 in rotating shaft 6, according to the radius size that is arranged on length graduation mark 7 in rotating shaft 6 and determines drawn circular arc, after determining arc radius size, slide block 8 is locked, then adjust the position of disk 3 upper limit position blocks 5, determine the angle of drawn circular arc by the angle index line 4 on disk 3, after angle determines, limited block 5 is locked, then thereby rotating shaft 6 is with the paintbrush rotation on movable slider 8, by the time while forwarding the position at limited block 8 places to, just cannot be rotated further, now draw the radius size of circular arc and radian all to determine, slip by slide block 8 in rotating shaft 6 can also draw straight line.
If need two concentric circles of picture, so just in rotating shaft 6, place two slide blocks 8, then after determining radius of a circle by appeal method, rotating shaft 6 just can complete two concentrically ringed drawing simultaneously, together with in the time not using, rotating shaft 6 being rotated to dead axle 2.
The utility model can be prepared different paintbrushes according to different demands, if be used in factory or workshop, can adopt sucker is positioner, and paintbrush can adopt the material that hardness ratio is larger, if in operation on glass, paintbrush can also be replaced with glass cutter so; If for teacher's teaching, can will place chalk in paintbrush hole so; If student's practicality is placed pencil just passable so in paintbrush hole.
Claims (3)
1. a novel bow compass, comprise dead axle and rotating shaft, described rotating shaft and described dead axle are hinged, it is characterized in that: be provided with positioner at described dead axle two ends, on described dead axle, be provided with disk, be respectively equipped with limited block and angle index line on described disk, described limited block can slide arbitrarily on described disk, in described rotating shaft, be respectively equipped with slide block and length graduation mark, on described slide block, be provided with paintbrush hole.
2. novel bow compass according to claim 1, is characterized in that: in described rotating shaft, be provided with multiple slide blocks.
3. novel bow compass according to claim 1, is characterized in that: described rotating shaft is positioned at described dead axle top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420467916.3U CN203974326U (en) | 2014-08-19 | 2014-08-19 | A kind of novel bow compass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420467916.3U CN203974326U (en) | 2014-08-19 | 2014-08-19 | A kind of novel bow compass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203974326U true CN203974326U (en) | 2014-12-03 |
Family
ID=51971808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420467916.3U Expired - Fee Related CN203974326U (en) | 2014-08-19 | 2014-08-19 | A kind of novel bow compass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203974326U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105150725A (en) * | 2015-09-22 | 2015-12-16 | 赵泓钦 | Multifunctional teaching aid for math class |
| CN107525446A (en) * | 2017-09-29 | 2017-12-29 | 黄彦凯 | A kind of angle measurer |
| CN107878080A (en) * | 2017-12-14 | 2018-04-06 | 王旭 | A kind of automation picture circular arc device easy to operation |
-
2014
- 2014-08-19 CN CN201420467916.3U patent/CN203974326U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105150725A (en) * | 2015-09-22 | 2015-12-16 | 赵泓钦 | Multifunctional teaching aid for math class |
| CN107525446A (en) * | 2017-09-29 | 2017-12-29 | 黄彦凯 | A kind of angle measurer |
| CN107878080A (en) * | 2017-12-14 | 2018-04-06 | 王旭 | A kind of automation picture circular arc device easy to operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20150819 |
|
| EXPY | Termination of patent right or utility model |