CN203974326U - A kind of novel bow compass - Google Patents

A kind of novel bow compass Download PDF

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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
slide
bow compass
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
Application number
CN201420467916.3U
Other languages
Chinese (zh)
Inventor
丁百慧
Original Assignee
丁百慧
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 丁百慧 filed Critical 丁百慧
Priority to CN201420467916.3U priority Critical patent/CN203974326U/en
Application granted granted Critical
Publication of CN203974326U publication Critical patent/CN203974326U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

A kind of novel bow compass
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.
CN201420467916.3U 2014-08-19 2014-08-19 A kind of novel bow compass Expired - Fee Related CN203974326U (en)

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 (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141203

Termination date: 20150819