CN201506160U - Ruler-shaped educational compasses - Google Patents
Ruler-shaped educational compasses Download PDFInfo
- Publication number
- CN201506160U CN201506160U CN2009202258116U CN200920225811U CN201506160U CN 201506160 U CN201506160 U CN 201506160U CN 2009202258116 U CN2009202258116 U CN 2009202258116U CN 200920225811 U CN200920225811 U CN 200920225811U CN 201506160 U CN201506160 U CN 201506160U
- Authority
- CN
- China
- Prior art keywords
- ruler
- fixed bar
- locator
- educational compasses
- fixed link
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses ruler-shaped educational compasses, comprising a ruler (1), a fixed link (2) and a localizer (3), graduations are arranged at the superior side of the ruler (1). The ruler-shaped educational compasses are characterized in that the fixed link (2) is fixed at the left end of the ruler (1) and is parallel to the ruler surface and vertical to the graduation side of the ruler (1), the shaft line of the fixed link (2) is superposed with the zero graduation line on the ruler (1), a rotating sucker (5) is arranged on the bottom of the fixed link (2), a runner (4) is arranged at the middle part of the ruler (1), the localizer (3) is arranged in the runner (4), the localizer (3) and the fixed link (2) are positioned at one side of the ruler (1), an upper jacket (8) is fixed on the localizer (3), and the shaft line of the jacket (8) and the shaft line of the fixed link (2) are parallel. The ruler-shaped educational compasses has simple structure, can conveniently measure the semidiameter, reduce the production difficulty, stably draw a picture and improve the teaching efficiency.
Description
Technical field
The utility model relates to a kind of improvement of educational compasses, specifically a kind of ruler shape educational compasses.
Background technology
At present, the compasses of mathematical education drawing usefulness, mostly be to constitute by set bolt and by two arms that set bolt is fixed together, article one, end is fixed with fixing feet, another end is fixed with writing implement, this conventional compasses need measure desired radius length by other rule drawing the certain bowlder of radius, draw then.Someone has proposed a kind of middle part at conventional compasses two arms and has fixed scale, select radius by the scale on the scale, but still there is deficiency in this compasses, its weak point is: the scale on its scale is by coming out of converting, inconsistent with the scale on the normal ruler, increase the production difficulty, and be easy to occur error when using, influenced drawing effect.In addition, the fixing feet of existing compasses mostly is iron nail, and is all very hard because of blackboard and compasses fixing feet when mapping on blackboard with this compasses, is not easy to fix, and draws a circle sometimes and need repeat to finish several times and just can finish, and loses time, and reduced efficiency of teaching.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, measure radius convenient, reduce the production difficulty, can stablize drawings, the ruler shape educational compasses of raising efficiency of teaching.
In order to reach above purpose, the technical scheme that the utility model adopted is: this ruler shape educational compasses, by ruler, fixed bar and locator constitute, the ruler upside is provided with scale, it is characterized in that: the left end at ruler is fixed with fixed bar, fixed bar is parallel with the chi face and orthogonal with ruler scale limit, the axis of fixed bar overlaps with zero graduation line on the ruler, the bottom of fixed bar is provided with the rotation sucker, middle part at ruler is provided with chute, is provided with locator in chute, and locator and fixed bar are positioned at the same side of ruler, fixing chuck on the locator, the axis of chuck is parallel with the axis of fixed bar.
The utility model is also implemented by following measure: the top of described chuck is provided with bolt; Described fixed bar bottom is provided with shrinkage pool, and the boss that rotates the upper end of sucker inserts in the shrinkage pool; The upper end of described locator is provided with tuning drive gear.
The beneficial effects of the utility model are: compare with the compasses of fixing scale at the middle part of two arms, use the degree of accuracy height of the radius length of the utility model drafting, reduced production difficulty and production cost; Compare with conventional compasses, the utility model not only can be drawn the certain circle of radius apace, also solved the fixing difficult difficult problem in the conventional compasses center of circle, under the prerequisite of not damaging blackboard, can be quickly and easily the fixing center of circle, and sucker can take off, and do not influence the use of ruler, save the drawing time, improved efficiency of teaching.
Description of drawings
Fig. 1 looks schematic diagram for structure master of the present utility model.
Fig. 2 analyses and observe enlarged diagram for the utility model along Figure 1A-A.
Fig. 3 analyses and observe enlarged diagram for the utility model along Figure 1B-B.
The specific embodiment
Make the utility model with reference to accompanying drawing 1,2,3.This ruler shape educational compasses, by ruler 1, fixed bar 2, locator 3 constitutes, ruler 1 upside is provided with scale, it is characterized in that: the left end at ruler 1 is fixed with fixed bar 2, fixed bar 2 is parallel with the chi face and orthogonal with ruler 1 scale limit, can prevent to paint the wearing and tearing of bowlder to ruler 1 scale, the axis of fixed bar 2 overlaps with zero graduation line on the ruler 1, is convenient to measure the radius of a circle length of painting, and the bottom of fixed bar 2 is provided with rotates sucker 5, can be under the prerequisite of not damaging blackboard, the fixing center of circle easily, QuickDraw is provided with chute 4 at the middle part of ruler 1, in chute 4, be provided with locator 3, be beneficial to locator 3 and endwisely slip along chute 4, locator 3 and fixed bar 2 are positioned at the same side of ruler 1, are fixing chuck 8 on the locator 3, be used for clamping chalk 10, the axis of chuck 8 is parallel with the axis of fixed bar 2.
The top of described chuck 8 is provided with bolt 6, is used for fixing locator 3, is convenient to draw; Described fixed bar 2 bottoms are provided with shrinkage pool, and the boss 9 that rotates the upper end of sucker 5 inserts in the shrinkage pool, and it can be rotated in shrinkage pool reposefully, when not using the compasses function, can take off rotating sucker 5 like this, draw straight line and use; The upper end of described locator 3 is provided with tuning drive gear 7, is convenient to measure the length of radius.
Claims (4)
1. ruler shape educational compasses, by ruler (1), fixed bar (2) and locator (3) constitute, ruler (1) upside is provided with scale, it is characterized in that: the left end at ruler (1) is fixed with fixed bar (2), fixed bar (2) is parallel with the chi face and orthogonal with ruler (1) scale limit, the axis of fixed bar (2) overlaps with zero graduation line on the ruler (1), the bottom of fixed bar (2) is provided with rotates sucker (5), be provided with chute (4) at the middle part of ruler (1), in chute (4), be provided with locator (3), locator (3) and fixed bar (2) are positioned at the same side of ruler (1), go up the fixing chuck (8) of going up at locator (3), the axis of chuck (8) is parallel with the axis of fixed bar (2).
2. ruler shape educational compasses according to claim 1 is characterized in that: the top of described chuck (8) is provided with bolt (6).
3. ruler shape educational compasses according to claim 1 is characterized in that: described fixed bar (2) bottom is provided with shrinkage pool, and the boss (9) that rotates the upper end of sucker (5) inserts in the shrinkage pool.
4. ruler shape educational compasses according to claim 1 is characterized in that: the upper end of described locator (3) is provided with tuning drive gear (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202258116U CN201506160U (en) | 2009-08-31 | 2009-08-31 | Ruler-shaped educational compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202258116U CN201506160U (en) | 2009-08-31 | 2009-08-31 | Ruler-shaped educational compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201506160U true CN201506160U (en) | 2010-06-16 |
Family
ID=42467292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202258116U Expired - Fee Related CN201506160U (en) | 2009-08-31 | 2009-08-31 | Ruler-shaped educational compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201506160U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253676A (en) * | 2018-10-08 | 2019-01-22 | 彩虹（合肥）液晶玻璃有限公司 | measuring device |
-
2009
- 2009-08-31 CN CN2009202258116U patent/CN201506160U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253676A (en) * | 2018-10-08 | 2019-01-22 | 彩虹（合肥）液晶玻璃有限公司 | measuring device |
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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: 20100616 Termination date: 20100831 |