CN202965694U - Semicircle ruler with chalk slideway - Google Patents
Semicircle ruler with chalk slideway Download PDFInfo
- Publication number
- CN202965694U CN202965694U CN 201220565950 CN201220565950U CN202965694U CN 202965694 U CN202965694 U CN 202965694U CN 201220565950 CN201220565950 CN 201220565950 CN 201220565950 U CN201220565950 U CN 201220565950U CN 202965694 U CN202965694 U CN 202965694U
- Authority
- CN
- China
- Prior art keywords
- semi
- chalk
- connecting rod
- ruler
- semicircle
- 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 the technical field of teaching tools, in particular to a semicircle ruler with a chalk slideway. The semicircle ruler comprises a semicircle ruler part, wherein the semicircle ruler part is in a hollow structure; scales are uniformly arranged on the upside of the semicircle ruler part; a circle center of the semicircle ruler part is movably articulated with a connecting rod by an articulated shaft; an annular slide groove is formed in the semicircle ruler part; a slide block is arranged at the other end of the connecting rod, and can move in the slide groove; a fixing device is arranged on the slide block; the connecting rod is movably connected with a chalk cover; the chalk cover can move along the connecting rod; the fixing device is a nut which exerts a limiting function; and the nut is completely positioned outside the semicircle ruler part. With the adoption of the semicircle ruler, a drawn figure is attractive. The semicircle ruler is high in precision, simple to operate and convenient to use, and saves time and labor.
Description
Technical field:
The utility model relates to the teaching aid technical field, relates in particular a kind of semi-circle ruler with the chalk slideway.
Background technology:
Semi-circle ruler is a kind of teaching aid that often uses in teaching, the upper semi-circle ruler that uses of teaching at present is all first to draw a horizontal line in use, center of circle of definition in the middle of horizontal line, drawing a round dot in needed angle position serves as a mark, and then the center of circle and round dot are coupled together obtain needed angle line, round dot mark on the angle line that draws like this can not be got rid of, affect the attractive in appearance of figure, and also there is very large error in the angle line that draws due to several factors such as visions, draws simultaneously time-consuming effort again.
The utility model content:
The purpose of this utility model is for the deficiencies in the prior art part, and a kind of semi-circle ruler with the chalk slideway is provided, and the figure that draws is attractive in appearance, and precision is high, and is time saving and energy saving.The utility model is simple to operate, and is easy to use.
Technology solution of the present utility model is as follows:
Semi-circle ruler with the chalk slideway comprises semi-circle ruler, and semi-circle ruler is hollow structure, and evenly is provided with above it scale, and the circle centre position of described semi-circle ruler is movably hinged a connecting rod by hinge; Be provided with an annular groove in described semi-circle ruler, the other end of connecting rod is provided with a slide block, and slide block can move in chute, and slide block is provided with a fixture; Be flexibly connected a chalk sleeve on described connecting rod, chalk sleeve can move along connecting rod.
In technique scheme, described fixture has been the nut of position-limiting action.
In technique scheme, described nut is positioned at the outside of semi-circle ruler fully.
The beneficial effects of the utility model are:
Semi-circle ruler of the present utility model is loaded onto chalk in chalk sleeve, pivot link is fixed connecting rod by stop nut to needed angle place, mobile chalk sleeve, and required angle line namely can draw.The figure that the utility model draws is attractive in appearance, and precision is high, and is time saving and energy saving.It is simple to operate, and is easy to use.
Description of drawings:
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
The following stated is only preferred embodiment of the present utility model, is not that scope of the present utility model is limited.
Embodiment sees accompanying drawing 1, with the semi-circle ruler of chalk slideway, comprises semi-circle ruler 1, and semi-circle ruler is hollow structure, and evenly is provided with above it scale, and the circle centre position of described semi-circle ruler is movably hinged a connecting rod 3 by hinge 2; Be provided with an annular groove 4 in described semi-circle ruler, the other end of connecting rod is provided with a slide block 5, and slide block can move in chute, and slide block is provided with a fixture 6; Be flexibly connected a chalk sleeve 7 on described connecting rod, chalk sleeve can move along connecting rod.
Described fixture has been the nut of position-limiting action.
Described nut is positioned at the outside of semi-circle ruler fully.
Claims (3)
1. with the semi-circle ruler of chalk slideway, comprise semi-circle ruler, semi-circle ruler is hollow structure, and evenly is provided with above it scale, it is characterized in that: the circle centre position of described semi-circle ruler is movably hinged a connecting rod by hinge; Be provided with an annular groove in described semi-circle ruler, the other end of connecting rod is provided with a slide block, and slide block can move in chute, and slide block is provided with a fixture; Be flexibly connected a chalk sleeve on described connecting rod, chalk sleeve can move along connecting rod.
2. the semi-circle ruler with the chalk slideway according to claim 1, it is characterized in that: described fixture has been the nut of position-limiting action.
3. the semi-circle ruler with the chalk slideway according to claim 2, it is characterized in that: described nut is positioned at the outside of semi-circle ruler fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565950 CN202965694U (en) | 2012-10-30 | 2012-10-30 | Semicircle ruler with chalk slideway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565950 CN202965694U (en) | 2012-10-30 | 2012-10-30 | Semicircle ruler with chalk slideway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202965694U true CN202965694U (en) | 2013-06-05 |
Family
ID=48506814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220565950 Expired - Fee Related CN202965694U (en) | 2012-10-30 | 2012-10-30 | Semicircle ruler with chalk slideway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202965694U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104972804A (en) * | 2015-05-16 | 2015-10-14 | 常州大学 | Electric calligraphy paper pulling device |
-
2012
- 2012-10-30 CN CN 201220565950 patent/CN202965694U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104972804A (en) * | 2015-05-16 | 2015-10-14 | 常州大学 | Electric calligraphy paper pulling device |
| CN104972804B (en) * | 2015-05-16 | 2016-08-24 | 常州大学 | A kind of electronic actuator of calligraphy paper using |
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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: 20130605 Termination date: 20131030 |