CN203449813U - Mobile device for compasses - Google Patents
Mobile device for compasses Download PDFInfo
- Publication number
- CN203449813U CN203449813U CN201320339866.6U CN201320339866U CN203449813U CN 203449813 U CN203449813 U CN 203449813U CN 201320339866 U CN201320339866 U CN 201320339866U CN 203449813 U CN203449813 U CN 203449813U
- Authority
- CN
- China
- Prior art keywords
- compasses
- slideway
- chalk
- main body
- shifter
- 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 - Lifetime
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model belongs to the technical field of teaching appliances, especially relates to a mobile device for compasses. The mobile device for compasses is characterized by comprising a main body, a chute formed on the side of the main body and passing through the main body, an observation hole is formed on the main body above the chute and communicated with the chute, a chalk fixation through hole corresponded to the observation hole and formed on the main body, connection plates arranged on the two sides of the main body and in parallel with the chute, and rotary nuts arranged on the connection plates and communicated with the chute and the chalk fixation through hole. The diameter of one circle to be drawn can be well and very conveniently positioned, so that the circle is more conveniently drawn, and moreover the structure of the mobile device is simple, light and convenient.
Description
Technical field
The utility model belongs to teaching aid technical field, relates in particular to a kind of shifter of compasses.
Background technology
Teacher, when blackboard upper drawing circle, adopts three kinds of compasses at present: on a supporting leg of the first compasses, iron nail is housed and is fixed on blackboard; On a supporting leg of the second compasses, rubber being housed is fixed on blackboard; On a supporting leg of the third compasses, sucker being housed is fixed on blackboard.Present blackboard is all magnet board, and its feature is made of iron sheet material, surperficial smoother, and very hard again, magnetic a little less than.Teacher when the blackboard upper drawing circle, has many weak points with above-mentioned compasses: the first compasses, and draw bowlder iron nail and be not easy on blackboard fixingly, be easy to landing from blackboard, and nail is easy to blackboard to cause damage.It is unstable too that the second compasses are made bowlder, easily landing.The third compasses sucker is difficult to hold blackboard sometimes, and easily from blackboard landing, and sucker is softer, and in the process of drawing, radius of circle has some variation, and drawn circle is standard not too.Therefore, I have designed a kind of magnetic compasses, have avoided above-mentioned weak point.
Summary of the invention
The purpose of this utility model is to solve above-described technical problem, and a kind of shifter of compasses is provided, and its technical scheme is as follows:
A kind of shifter of compasses, it is characterized in that, the shifter of described compasses comprises body, the sidepiece of described body offers the slideway that runs through body, the place, top that is positioned at slideway on described body offers peep hole, and described peep hole communicates with slideway, offers the fixing perforation of the chalk corresponding with peep hole on described body, the both sides of described body are provided with the connecting plate paralleling with slideway, and described connecting plate is provided with the rotating nut communicating with slideway and the fixing perforation of chalk.
The shifter of the compasses that the utility model provides when in use, can be arranged with rule in the slideway of body, can be so that whole shifter can slide on rule.Peep hole is that the one side that has a graduation mark with rule communicates, and like this, can observe the graduation mark on whole rule by peep hole, thereby determines required picture radius of a circle size.And can plug chalk in the fixing perforation of chalk, thereby can be so that chalk can be fixed on shifter, along with rule can draw circle.The both sides of described body are provided with the connecting plate paralleling with slideway, and described connecting plate is provided with the rotating nut communicating with slideway and the fixing perforation of chalk.By rotating nut, whole shifter can be fixed on rule, also chalk can be fixed in the fixing perforation of chalk.And the effect of connecting plate is the effectiveness with stiffener, can be so that rotating nut rotation be fixing tighter.
The problem that the utility model mainly solves is: at compasses, draw bowlder, because meeting need to be drawn the circle of different radii, common compasses are to readjust, and use cumbersome.By shifter, can in the enterprising line slip of rule, regulate very easily, easy to use.
The utility model can be fine, very easily required picture diameter of a circle is positioned, and makes picture fenestra more convenient, and simple in structure, lightly convenient.
Accompanying drawing explanation
Fig. 1 schematic diagram of the present utility model.
The specific embodiment
Below in conjunction with Fig. 1, illustrate embodiment:
A kind of shifter of compasses, it is characterized in that, the shifter of described compasses comprises body 1, the sidepiece of described body 1 offers the slideway 2 that runs through body 1, the place, top that is positioned at slideway 2 on described body 1 offers peep hole 3, described peep hole 3 communicates with slideway 2, on described body 1, offer the fixing perforation 4 of the chalk corresponding with peep hole 3, the both sides of described body 1 are provided with the connecting plate 5 paralleling with slideway 2, and described connecting plate 5 is provided with and slideway 2 and the fixing perforation of chalk 4 rotating nuts that communicate 6.
The shifter of the compasses that the utility model provides when in use, can be arranged with rule in the slideway of body, can be so that whole shifter can slide on rule.Peep hole is that the one side that has a graduation mark with rule communicates, and like this, can observe the graduation mark on whole rule by peep hole, thereby determines required picture radius of a circle size.And can plug chalk in the fixing perforation of chalk, thereby can be so that chalk can be fixed on shifter, along with rule can draw circle.The both sides of described body are provided with the connecting plate paralleling with slideway, and described connecting plate is provided with the rotating nut communicating with slideway and the fixing perforation of chalk.By rotating nut, whole shifter can be fixed on rule, also chalk can be fixed in the fixing perforation of chalk.And the effect of connecting plate is the effectiveness with stiffener, can be so that rotating nut rotation be fixing tighter.
Claims (2)
1. the shifter of compasses, it is characterized in that, the shifter of described compasses comprises body, the sidepiece of described body offers the slideway that runs through body, the place, top that is positioned at slideway on described body offers peep hole, described peep hole communicates with slideway, on described body, offer the fixing perforation of the chalk corresponding with peep hole, the both sides of described body are provided with the connecting plate paralleling with slideway, and described connecting plate is provided with the rotating nut communicating with slideway and the fixing perforation of chalk.
2. the shifter of compasses as claimed in claim 1, is characterized in that, described glassy layer is safety glass layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320339866.6U CN203449813U (en) | 2013-06-14 | 2013-06-14 | Mobile device for compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320339866.6U CN203449813U (en) | 2013-06-14 | 2013-06-14 | Mobile device for compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203449813U true CN203449813U (en) | 2014-02-26 |
Family
ID=50129715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320339866.6U Expired - Lifetime CN203449813U (en) | 2013-06-14 | 2013-06-14 | Mobile device for compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203449813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317916A (en) * | 2013-06-14 | 2013-09-25 | 雷洪炳 | Mover of compasses |
-
2013
- 2013-06-14 CN CN201320339866.6U patent/CN203449813U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317916A (en) * | 2013-06-14 | 2013-09-25 | 雷洪炳 | Mover of compasses |
| CN103317916B (en) * | 2013-06-14 | 2016-01-27 | 雷洪炳 | A kind of shifter of compasses |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140226 Effective date of abandoning: 20160127 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |