CN201511709U - Teaching compass - Google Patents
Teaching compass Download PDFInfo
- Publication number
- CN201511709U CN201511709U CN2009200280670U CN200920028067U CN201511709U CN 201511709 U CN201511709 U CN 201511709U CN 2009200280670 U CN2009200280670 U CN 2009200280670U CN 200920028067 U CN200920028067 U CN 200920028067U CN 201511709 U CN201511709 U CN 201511709U
- Authority
- CN
- China
- Prior art keywords
- sucker
- ruler
- blackboard
- pen cap
- support cover
- 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 relates to a teaching compass which comprises a circle center fulcrum and a graphics device, and is characterized in that the circle center fulcrum is a sucker, the graphics device comprises a rotating part, a ruler connected with the rotating part through a hinge and a pen cap arranged on the ruler; the rotating part is sheathed on a circular convex block above the sucker; and a sliding block which can slide along the ruler is arranged on the ruler, and the pen cap is arranged on the sliding block. A positioning bolt is arranged on the sliding block. A pull rod is arranged on the sucker, and an eccentric button is articulated at the upper end of the pull rod; and a support cover is arranged on the circular convex block by downward extension, a spring is arranged between the support cover and the sucker, and the pull rod can slide along an inner hole of the circular convex block. When in use, the operation is convenient, and the sucker can be adopted to be absorbed on a blackboard as the circle center fulcrum, thereby avoiding damaging the blackboard, avoiding sliding, and further ensuring the graphics quality.
Description
Technical field
The utility model relates to a kind of teaching equipment, specifically, relates to a kind of educational compasses.
Background technology
Traditional educational compasses is a kind of double-legged compasses, and wherein the end of a pin is fixed with as center of circle fulcrum pilot pin, and the end of another pin is provided with chalk sleeve.During use, insert chalk in chalk sleeve, then, an end that will have pilot pin is fixed on the blackboard, rotates the end be inserted with chalk, the circle that can on blackboard, draw and want so just, and the distance between pilot pin and the chalk is exactly this circular radius.This compasses exist pin rule support height, inconvenient operation, the hard fragile blackboard of pilot pin, make the bowlder pilot pin on blackboard easily slides and influences shortcoming such as drawing quality.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defective, provides a kind of easy to use, does not damage blackboard during drawing, and the high educational compasses of drawing quality.
For achieving the above object, the technical scheme that the utility model adopted is:
A kind of educational compasses comprises center of circle fulcrum and plotting unit, it is characterized in that: described center of circle fulcrum is a sucker, the ruler that plotting unit comprises revolving part, be hinged with revolving part and be located at the pen cap on the ruler; Revolving part is socketed on the round bump of sucker top; Ruler is provided with can be along the slide block of ruler slip, and the pen cap is located on the slide block.
As improvement of the technical scheme:
Described slide block is provided with bolt.
Described sucker is provided with pull bar, and the upper end of pull bar is hinged with eccentric button; Described round bump is extended with support cover downwards, is provided with spring between support cover and the sucker, and pull bar can slide along the endoporus of round bump.
Owing to adopted technique scheme, the utility model in use, and is easy to operate, adopts sucker to be adsorbed on the blackboard as center of circle fulcrum, neither can cause damage to blackboard, also can not slide, thereby guarantee the quality of drawing.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of educational compasses among the embodiment of the present utility model;
Fig. 2 is the vertical view of Fig. 1.
Among the figure: the eccentric button of 1-, 2-pull bar, 3-round bump, 4-revolving part, 5-spring, 6-support cover, 7-sucker, 8-ruler, 9-slide block, the 10-pen cap, 11-bolt.
The specific embodiment
A kind of educational compasses as shown in Figure 1 and Figure 2, comprises center of circle fulcrum and plotting unit; Described center of circle fulcrum is a sucker 7, the ruler 8 that plotting unit comprises revolving part 4, be hinged with revolving part 4 and be located at the pen cap 10 on the ruler 8; Revolving part 4 is socketed on the round bump 3 of sucker 7 tops; Ruler 8 is provided with can be along the slide block 9 of ruler slip, and the pen cap 10 is located on the slide block 9.Described slide block 9 is provided with bolt 11.
Described sucker 7 is provided with pull bar 2, and the upper end of pull bar 2 is hinged with eccentric button 1; Described round bump 3 is extended with support cover 6 downwards, is provided with spring 5 between support cover 6 and the sucker 7, and pull bar 2 can slide along the endoporus of round bump 3.
During use, earlier sucker 7 is attached on the blackboard, again that pull bar 2 upper ends are hinged eccentric button 1 is holded up, because the peripheral supported cover 6 of sucker 7 is fixed on the blackboard, the centre that pull bar 2 drives sucker 7 moves upward, and makes sucker 7 produce bigger negative pressure, tightly is adsorbed in sucker 7 on the blackboard; Because ruler 8 is articulated on the revolving part 4, therefore the end of ruler 8 is lifted the position of adjusting slider 9 on ruler 8 easily, thereby regulate the picture radius of a circle, after radius of a circle is regulated and finished, by bolt 11 slide block 9 is fixed on the ruler 8, can fixes radius of circle; Then, with in the tool insertion pen cap 10, a hand-held tool drives a ruler 8, revolving part 4 rotates to draw and sets the circle of radius, is easy to adjusting, the convenient use again.
Claims (3)
1. an educational compasses comprises center of circle fulcrum and plotting unit, it is characterized in that: described center of circle fulcrum is sucker (7), the ruler (8) that plotting unit comprises revolving part (4), be hinged with revolving part (4) and be located at the pen cap (10) on the ruler (8); Revolving part (4) is socketed on the round bump (3) of sucker (7) top; Ruler (8) is provided with can be along the slide block (9) of ruler slip, and the pen cap (10) is located on the slide block (9).
2. educational compasses according to claim 1 is characterized in that: described slide block (9) is provided with bolt (11).
3. educational compasses according to claim 1 is characterized in that: described sucker (7) is provided with pull bar (2), and the upper end of pull bar (2) is hinged with eccentric button (1); Described round bump (3) is extended with support cover (6) downwards, is provided with spring (5) between support cover (6) and the sucker (7), and pull bar (2) can slide along the endoporus of round bump (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200280670U CN201511709U (en) | 2009-06-22 | 2009-06-22 | Teaching compass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200280670U CN201511709U (en) | 2009-06-22 | 2009-06-22 | Teaching compass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201511709U true CN201511709U (en) | 2010-06-23 |
Family
ID=42483113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200280670U Expired - Fee Related CN201511709U (en) | 2009-06-22 | 2009-06-22 | Teaching compass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201511709U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108749413A (en) * | 2018-06-15 | 2018-11-06 | 张楷文 | A kind of multifunctional mathmatical schooling apparatus |
| CN111251755A (en) * | 2018-10-26 | 2020-06-09 | 刘小亮 | Teaching compass ruler and use method thereof |
| CN112223938A (en) * | 2020-11-30 | 2021-01-15 | 西安高达智能仪器仪表有限公司 | Circle drawing tool for teaching |
| CN112918164A (en) * | 2021-04-27 | 2021-06-08 | 安徽理工大学 | Calculus curve modeling is with drawing instrument convenient to use |
-
2009
- 2009-06-22 CN CN2009200280670U patent/CN201511709U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108749413A (en) * | 2018-06-15 | 2018-11-06 | 张楷文 | A kind of multifunctional mathmatical schooling apparatus |
| CN111251755A (en) * | 2018-10-26 | 2020-06-09 | 刘小亮 | Teaching compass ruler and use method thereof |
| CN112223938A (en) * | 2020-11-30 | 2021-01-15 | 西安高达智能仪器仪表有限公司 | Circle drawing tool for teaching |
| CN112918164A (en) * | 2021-04-27 | 2021-06-08 | 安徽理工大学 | Calculus curve modeling is with drawing instrument convenient to use |
| CN112918164B (en) * | 2021-04-27 | 2022-02-22 | 安徽理工大学 | Calculus curve modeling is with drawing instrument convenient to use |
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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: 20100623 Termination date: 20110622 |