CN205033799U - Practical compass teaching aid - Google Patents
Practical compass teaching aid Download PDFInfo
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- CN205033799U CN205033799U CN201520808671.0U CN201520808671U CN205033799U CN 205033799 U CN205033799 U CN 205033799U CN 201520808671 U CN201520808671 U CN 201520808671U CN 205033799 U CN205033799 U CN 205033799U
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- ruler
- teaching aid
- tightrope
- nonelastic
- utility
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Abstract
The utility model discloses a practical compass teaching aid includes handle, ruler and nonelastic tightrope, the handle bottom is connected with the sucking disc, ruler and nonelastic tightrope level are fixed on hand, set up the removal pen clip on the nonelastic tightrope. The utility model discloses simple structure, convenient to use has reduced teacher's work load, has practiced thrift the teaching time, has fine practicality.
Description
Technical field
The utility model relates to a kind of educational aid, specifically a kind of Practical compass teaching aid.
Background technology
At present, in teaching process, usually need at blackboard upper drawing circle, most of teacher adopts big compasses to draw, but the big compasses on current classroom is in " people " font, be made up of two pin, a pin is provided with iron point, and another pin fixes chalk, and such compasses can use on wooden blackboard, but when classroom blackboard or Glass blackboard upper drawing circle, iron point cannot be fixed, and namely cannot fix the center of circle, and uncontrollable radius of a circle.In addition, this " people " font compasses rotate mapping time, due to blackboard be erect plane, fulcrum from blackboard too away from, therefore fixed bar always easily movement, very inconvenient.
Utility model content
For existing compass teaching aid Problems existing, the utility model provides a kind of Practical compass teaching aid, and these compasses, with ruler, can determine required radius of a circle easily and fast, and leg are more easily fixed.
The technical solution of the utility model is: a kind of Practical compass teaching aid comprises handle, ruler and nonelastic tightrope, sucker is connected with bottom described handle, described ruler and nonelastic tightrope are horizontally fixed on described handle, and described nonelastic tightrope arranges mobile pen clip.
As preferably, described handle is socketed with silica gel sheath.
As preferably, described ruler is Collapsible ruler, and it is marked with scale.
As preferably, described mobile pen clip upper end arranges buckle and described nonelastic tightrope is fixed, and lower end is provided with elastic opening.
The beneficial effects of the utility model are: structure is simple, classroom is drawn bowlder and only sucker suction can need be fixed the center of circle on blackboard, not easily skid; Compasses arm is set to nonelastic tightrope, carrying portable, can regulate mobile pen clip during use according to ruler scale, accurately convenient; Ruler is set to scalable ruler, is not only convenient to storage and carries, and can not affect circular drafting, has good practicality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
1-handle in figure, 2-sucker, 3-ruler, 4-is nonelastic tightrope, 5-moves pen clip.
Detailed description of the invention
Below in conjunction with Figure of description, the utility model is further described.
As shown in Figure 1, this Practical compass teaching aid, comprises handle 1, ruler 3 and nonelastic tightrope 4, is connected with sucker 2 bottom described handle 1, and described ruler 3 and nonelastic tightrope 4 are horizontally fixed on described handle 1, and described nonelastic tightrope 4 arranges mobile pen clip 5.
In the present embodiment, as preferably, described handle 1 is socketed with silica gel sheath, and silica gel sheath is soft, conveniently grips, and with human body Long Term Contact, nontoxic, harmless.
In the present embodiment, as preferably, described ruler 3 is the graduated shrinkage-rule of mark, and it is not only convenient to storage and carries, and can not affect circular drafting, and can determine drawn radius of a circle rapidly and accurately, have good practicality.
In the present embodiment, as preferably, described mobile pen clip 5 upper end arranges buckle and described nonelastic tightrope 4 is fixed, and lower end is provided with elastic opening, facilitates dress to get chalk.
When using the utility model, mobile pen clip 5 loads chalk, and mobile pen clip 5 is adjusted to required radius length according to the scale on ruler 3 on nonelastic tightrope 4, one holds handle 1, is fixed on blackboard by sucker 2, one holds mobile pen clip 5, by stretching for nonelastic tightrope around sucker 2 rotary picture circle, easy to use, reduce the workload of teacher, save instructional blocks of time, there is good practicality.
Above; be only preferred embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should define with claim is as the criterion.
Claims (4)
1. Practical compass teaching aid comprises handle, ruler and a nonelastic tightrope, it is characterized in that: be connected with sucker bottom described handle, and described ruler and nonelastic tightrope are horizontally fixed on described handle, and described nonelastic tightrope arranges mobile pen clip.
2. a kind of Practical compass teaching aid according to claim 1, is characterized in that: described handle is socketed with silica gel sheath.
3. a kind of Practical compass teaching aid according to claim 1, is characterized in that: described ruler is Collapsible ruler, and it is marked with scale.
4. a kind of Practical compass teaching aid according to claim 1, is characterized in that: described mobile pen clip upper end arranges buckle and described nonelastic tightrope is fixed, and lower end is provided with elastic opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520808671.0U CN205033799U (en) | 2015-10-16 | 2015-10-16 | Practical compass teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520808671.0U CN205033799U (en) | 2015-10-16 | 2015-10-16 | Practical compass teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205033799U true CN205033799U (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520808671.0U Active CN205033799U (en) | 2015-10-16 | 2015-10-16 | Practical compass teaching aid |
Country Status (1)
| Country | Link |
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| CN (1) | CN205033799U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107718953A (en) * | 2017-10-26 | 2018-02-23 | 绍兴柯桥雷霄机械科技有限公司 | A kind of compasses for teaching of fix stably |
-
2015
- 2015-10-16 CN CN201520808671.0U patent/CN205033799U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107718953A (en) * | 2017-10-26 | 2018-02-23 | 绍兴柯桥雷霄机械科技有限公司 | A kind of compasses for teaching of fix stably |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |