CN202528687U - Teaching aid compass - Google Patents
Teaching aid compass Download PDFInfo
- Publication number
- CN202528687U CN202528687U CN2012201434019U CN201220143401U CN202528687U CN 202528687 U CN202528687 U CN 202528687U CN 2012201434019 U CN2012201434019 U CN 2012201434019U CN 201220143401 U CN201220143401 U CN 201220143401U CN 202528687 U CN202528687 U CN 202528687U
- Authority
- CN
- China
- Prior art keywords
- compass
- teaching aid
- groove
- telescopic pipe
- telescopic tube
- 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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Abstract
The utility model provides a teaching aid compass and belongs to teaching aids. The teaching aid compass mainly resolves the problems that a traditional teaching aid compass is single in function and not convenient to carry. The teaching aid compass structurally comprises a telescopic pipe. One end of the telescopic pipe is provided with a chalk clamp, the other end of the telescopic pipe is provided with a groove, and a fixation pin is hinged to the outer side of the groove through a rotating shaft. The straight edge on one side of the telescopic pipe is provided with scales. The teaching aid compass integrates functions of the compass, a ruler and a pointer. When the compass is not used for drawing of a circle, the fixation pin is placed in the groove in rotated mode to prevent people from being accidentally pricked by a pinpoint.
Description
Technical field
The utility model relates to a kind of educational aid, specifically a kind of teaching aid compasses.
Background technology
Teaching aid compasses commonly used now, volume is bigger, takes up the comparison heaviness, and when the bowlder that needs the picture full-length, need look for ruler measurement earlier, draws circle again, and is very inconvenient.And existing teaching aid compasses can only be used for picture circle, function singleness.
The utility model content
The purpose of the utility model is to provide a kind of teaching aid compasses, and these teaching aid compasses can be used to the picture circle, can also use as ruler and teacher's pointer.
The technical scheme that its technical problem of the utility model solution is taked is: a kind of teaching aid compasses; Its structure comprises telescopic tube; One end of described telescopic tube is provided with chalk folder, and the other end is provided with a groove, in the outside of groove through the hinged locking pin of rotating shaft.
One side straight flange of described telescopic tube is provided with graduation mark.
Be provided with chalk in the described chalk folder.
The beneficial effect of the utility model is: these teaching aid compasses are integrated compasses, ruler and three kinds of functions of teacher's pointer, and do not draw bowlder the locking pin rotation is put in the groove, avoid people to be stabbed by accidental needle.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 1 telescopic tube, 2 chalks folder, 3 chalks, 4 locking pins, 5 rotating shafts, 6 grooves, 7 graduation marks.
The specific embodiment
As shown in Figure 1.A kind of teaching aid compasses; Its structure comprises telescopic tube 1, and an end of described telescopic tube 1 is provided with chalk folder 2, and the other end is provided with a groove 6; Through rotating shaft 5 hinged locking pins 4, locking pin 4 can be folded in the groove 6 through the rotation of rotating shaft 5 in the outside of groove 6.
One side straight flange of described telescopic tube 1 is provided with graduation mark 7, can be used as ruler and draws the short lines use.
Be provided with chalk 3 in the described chalk folder 2, draw bowlder and can chalk 3 be inserted chalk folder 2 interior uses.
Telescopic tube 1 is elongated, and these teaching aid compasses can use as teacher's pointer; When needs were measured length, the graduation mark on the telescopic tube 1 capable of using was measured; When needs use compasses; Rotational fixation pin 4 is to vertical with telescopic tube 1, adjusts the distance of compasses locking pin 4 and chalk 3, the standard-sized circle of drawing through telescopic tube 1 length; Do not draw bowlder locking pin 4 rotations are put in the groove 6, avoid people to be stabbed by accidental needle.
Claims (3)
1. teaching aid compasses comprise telescopic tube, it is characterized in that, an end of described telescopic tube is provided with chalk folder, and the other end is provided with a groove, in the outside of groove through the hinged locking pin of rotating shaft.
2. a kind of teaching aid compasses according to claim 1 is characterized in that, a side straight flange of described telescopic tube is provided with graduation mark.
3. a kind of teaching aid compasses according to claim 2 is characterized in that, are provided with chalk in the described chalk folder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201434019U CN202528687U (en) | 2012-04-07 | 2012-04-07 | Teaching aid compass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201434019U CN202528687U (en) | 2012-04-07 | 2012-04-07 | Teaching aid compass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202528687U true CN202528687U (en) | 2012-11-14 |
Family
ID=47129890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201434019U Expired - Fee Related CN202528687U (en) | 2012-04-07 | 2012-04-07 | Teaching aid compass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202528687U (en) |
-
2012
- 2012-04-07 CN CN2012201434019U patent/CN202528687U/en not_active Expired - Fee Related
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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: 20121114 Termination date: 20130407 |