CN202271730U - Blackboard cyclograph for teaching - Google Patents
Blackboard cyclograph for teaching Download PDFInfo
- Publication number
- CN202271730U CN202271730U CN2011203836680U CN201120383668U CN202271730U CN 202271730 U CN202271730 U CN 202271730U CN 2011203836680 U CN2011203836680 U CN 2011203836680U CN 201120383668 U CN201120383668 U CN 201120383668U CN 202271730 U CN202271730 U CN 202271730U
- Authority
- CN
- China
- Prior art keywords
- ruler
- teaching
- blackboard
- cyclograph
- chi
- 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 a blackboard cyclograph for teaching, which belongs to the field of teaching equipment and structurally comprises a fixed ruler and an adjusting ruler. The surfaces of the fixed ruler and the adjusting ruler are provided with scales, a sliding groove is arranged at the bottom of the adjusting ruler, a rotating shaft is arranged at the front end of the fixed ruler, a sucker is fixed below the rotating shaft, and the tail end of the fixed ruler is connected with the sliding groove of the adjusting ruler in sliding mode. A ring chalk sleeve is arranged under the tail end of the adjusting ruler, a cylindrical handle is installed on the adjusting ruler above the chalk sleeve, and the handle is concentric with the chalk sleeve. Compared with the prior art, the blackboard cyclograph for teaching has the advantages of being reasonable in design, simple in structure, convenient to use and the like and effectively improving teaching quality of efficiency of teachers.
Description
Technical field
The utility model relates to the teaching equipment field, and the blackboard cyclograph is used in teaching specifically.
Background technology
At present; The teacher paints circular pattern to explain geometrical issues through regular meeting on blackboard in mathematics several teaching process, and the instrument of draw circles is varied in the prior art, and wherein great majority are two leg formula compasses; Two leg formula compasses need bipod to contact blackboard simultaneously and wherein between center of circle pin and the blackboard displacement can not be arranged painting bowlder; This has technological challenge to a certain extent concerning the illustrator, moreover on blackboard, draws circular pattern and so simple not as drawing on the table, and the specification of on blackboard, drawing circular compasses is bigger; Action is difficult to control, brings inconvenience to a certain extent to the teacher.
Summary of the invention
The technical assignment of the utility model is to above weak point, provide a kind of simple in structure, use teaching easy to carry to use the blackboard cyclograph.
The utility model solves the technical scheme that its technical problem adopted: this teaching comprises that with the blackboard cyclograph surface is provided with the fixed ruler and adjusting chi of graduation mark; The bottom of regulating chi is provided with chute; The fixed ruler front end is provided with rotating shaft; The below of rotating shaft is fixed with sucker, and the tail end of fixed ruler is slidingly connected with the chute of regulating chi; The tail end below of regulating chi is provided with the annular chalk sleeve, cylindrical handle is installed, handle and chalk sleeve concentric on the adjusting chi of chalk sleeve top.
Described adjusting chi is provided with the locking button that cooperates with fixed ruler.
The teaching of the utility model is compared with prior art with the blackboard cyclograph, has characteristics such as reasonable in design, simple in structure, that use is easy to carry, effectively raises teacher's teaching quality and efficient.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Accompanying drawing is the structural representation of teaching with the blackboard cyclograph.
Among the figure: 1, fixed ruler, 2, regulate chi, 3, rotating shaft, 4, sucker, 5, the locking button, 6, chute, 7, chalk sleeve, 8, handle.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
The blackboard cyclograph is used in the teaching of the utility model; Its structure comprises that the surface is provided with the fixed ruler 1 and adjusting chi 2 of graduation mark; The bottom of regulating chi 2 is provided with chute 6, and fixed ruler 1 front end is provided with rotating shaft 3, and the below of rotating shaft 3 is fixed with sucker 4; The tail end of fixed ruler 1 is slidingly connected with the chute 6 of regulating chi 2, regulates chi 2 and is provided with the locking button 5 that cooperates with fixed ruler 1; The tail end below of regulating chi 2 is provided with annular chalk sleeve 7, on the adjusting chi 2 of chalk sleeve 7 tops cylindrical handle 8 is installed, handle 8 and chalk sleeve 7 concentrics.
The teaching of the utility model is very simple and convenient with its processing and fabricating of blackboard cyclograph, and processing and fabricating gets final product shown in the by specification accompanying drawing.
Except that the described technical characterictic of specification, be the known technology of those skilled in the art.
Claims (2)
1. the blackboard cyclograph is used in teaching; Comprise that the surface is provided with the fixed ruler and adjusting chi of graduation mark, it is characterized in that the bottom of regulating chi is provided with chute, the fixed ruler front end is provided with rotating shaft; The below of rotating shaft is fixed with sucker, and the tail end of fixed ruler is slidingly connected with the chute of regulating chi; The tail end below of regulating chi is provided with the annular chalk sleeve, cylindrical handle is installed, handle and chalk sleeve concentric on the adjusting chi of chalk sleeve top.
2. the blackboard cyclograph is used in teaching according to claim 1, it is characterized in that described adjusting chi is provided with the locking button that cooperates with fixed ruler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203836680U CN202271730U (en) | 2011-10-11 | 2011-10-11 | Blackboard cyclograph for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203836680U CN202271730U (en) | 2011-10-11 | 2011-10-11 | Blackboard cyclograph for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202271730U true CN202271730U (en) | 2012-06-13 |
Family
ID=46192114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203836680U Expired - Fee Related CN202271730U (en) | 2011-10-11 | 2011-10-11 | Blackboard cyclograph for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202271730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228406A (en) * | 2014-08-25 | 2014-12-24 | 苏州市职业大学 | Chalk sleeve for drawing various straight lines and circles |
-
2011
- 2011-10-11 CN CN2011203836680U patent/CN202271730U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228406A (en) * | 2014-08-25 | 2014-12-24 | 苏州市职业大学 | Chalk sleeve for drawing various straight lines and circles |
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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: 20120613 Termination date: 20121011 |