CN209775964U - Circle drawing teaching aid - Google Patents
Circle drawing teaching aid Download PDFInfo
- Publication number
- CN209775964U CN209775964U CN201920395560.XU CN201920395560U CN209775964U CN 209775964 U CN209775964 U CN 209775964U CN 201920395560 U CN201920395560 U CN 201920395560U CN 209775964 U CN209775964 U CN 209775964U
- Authority
- CN
- China
- Prior art keywords
- teaching aid
- circle
- groove
- fixing device
- cyclograph
- 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
Links
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 2
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a circle drawing teaching aid belongs to mathematics teaching aid field. The novel pen holder comprises a body, the body left side is provided with a transverse through groove, the right side is provided with a whiteboard pen fixing device and a chalk fixing device, a circle center supporting rod is arranged in the transverse through groove, a hollow pipeline is sleeved outside the circle center supporting rod, the two ends of the hollow pipeline are provided with a first fastening device and a second fastening device which can be disassembled, the hollow pipeline can slide along the transverse through groove, and the diameters of the first fastening device and the second fastening device are larger than the width of the transverse through groove. The utility model discloses convenient and practical, the user both can use the chalk to draw the circle on the blackboard, also can use the whiteboard pen to draw the circle on the whiteboard, need not change the tool of drawing the circle.
Description
Technical Field
The utility model relates to a teaching aid field especially relates to a circle drawing teaching aid.
Background
In traditional teaching process, most content is on the blackboard with chalk blackboard writing, in order to improve the convenience and the flexibility of teaching, also can adopt whiteboard pen blackboard writing on the blank with teaching content usually, in mathematical education class, often can use the drawing circle teaching aid, and common drawing circle in the market all is the teaching aid that uses to blank or blackboard alone, the user is for dealing with the different use scene, need prepare two kinds of teaching aids, it is inconvenient to carry.
Disclosure of Invention
The utility model discloses to the not enough of existence among the prior art, provide a convenient and practical, need not change the teaching aid, both can use the chalk, also can use the drawing circle teaching aid of blank pen.
For realizing the purpose of the utility model, the utility model discloses a realize through following technical scheme: the utility model provides a drawing teaching aid, includes the body, the body left side is provided with transversely link up the groove, and the right side is provided with whiteboard pen fixing device and chalk fixing device, transversely link up the inslot and be provided with centre of a circle branch, and this centre of a circle branch overcoat is equipped with the cavity pipeline, the both ends of cavity pipeline are equipped with the first fastener of detachable and second fastener, the cavity pipeline can be followed transversely and link up the groove and slide, first fastener and second fastener diameter all are greater than the groove width that transversely links up the groove.
Furthermore, the hollow pipeline is provided with threads on the outer surface, the first fastening device and the second fastening device are nuts, and the first fastening device and the second fastening device are in threaded connection with the hollow pipeline.
Furthermore, the whiteboard pen fixing device and the chalk fixing device are respectively connected with a locking device, after the chalk or the whiteboard pen is installed, the locking device is fastened, and the chalk and the whiteboard pen are more stable in the drawing process and are not easy to shake.
Furthermore, the inner rings of the white board pen fixing device and the chalk fixing device are respectively provided with an elastic layer, the elastic layers are used for adapting to chalks or white board pens in different sizes, the inserting of the chalks and the white board pens is facilitated, the fastening effect is achieved, and after the chalks and the white board pens are inserted, the elastic layers rebound to fasten the chalks or the white board pens.
Furthermore, the elastic layer is an elastic rubber material layer.
Furthermore, one end of the circle center supporting rod is fixedly connected with an adsorption device, so that the circle center supporting rod can be adsorbed and fixed on the blackboard and the whiteboard, and the circle center supporting rod is not easy to slide in the drawing process, so that the circle drawing is more accurate.
Further, the adsorption device is a sucker.
Further, there is the fixed connection handle on the right side of body, and handheld handle rotates the body, and the user draws the circle more convenient and fast.
Advantageous effects
The utility model has the advantages that the chalk fixing device and the white board pen fixing device are arranged on the teaching aid, so that a user can insert the chalk into the chalk fixing device or insert the white board pen into the white board pen fixing device according to actual requirements; the body can rotate around the circle center supporting rod around a shaft through the circle center supporting rod, the hollow pipeline sleeved outside the circle center supporting rod and the detachable fastening devices at the two ends of the hollow pipeline; the sucking disc arranged at one end of the circle center supporting rod can enable the circle center supporting rod to be adsorbed on the blackboard or the whiteboard, so that the circle center is not easy to slide; the chalk fixing device and the whiteboard pen fixing device are internally provided with elastic materials and locking devices connected with the elastic materials, so that the chalk or the whiteboard pen is more stable, and the chalk or the whiteboard pen is not easy to shake in a circle drawing process, and the circle is drawn more smoothly and truly; the right side of body has the fixed connection handle, holds the handle, rotates the body, and the user draws the circle more convenient and fast.
Therefore, the utility model provides a drawing circle teaching aid, more convenient and practical, the user both can use the chalk to draw the circle on the blackboard, also can use the whiteboard pen to draw the circle on the whiteboard, need not change the tool of drawing the circle.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a rear view of the present invention;
FIG. 3 is a schematic view of the structure of the center support rod of the present invention;
In the figure: the chalk holder comprises a body 1, a circle center support rod 2, a first fastening device 21, a hollow pipeline 22, threads 23, a second fastening device 24, an adsorption device 25, a transverse through groove 3, a whiteboard pen fixing device 4, a first elastic layer 41, a handle 5, a locking device 6, a chalk fixing device 7 and a second elastic layer 71.
Detailed Description
In order to make the technical scheme and the technical effect of the utility model can be disclosed more fully, the utility model is further elucidated below with the specific implementation mode and the attached drawing.
The utility model provides a drawing teaching aid, includes body 1, 1 left side of body is provided with transversely link up groove 3, and the right side is provided with whiteboard pen fixing device 4 and chalk fixing device 7, transversely link up 3 inslots and be provided with centre of a circle branch 2, and 2 overcoat of this centre of a circle branch is equipped with well cavity pipeline 22, the both ends of well cavity pipeline 22 are equipped with the first fastener 21 of detachable and second fastener 24, well cavity pipeline 22 can be followed transversely and link up 3 slides in groove, first fastener 21 and second fastener 24 diameter all are greater than the groove width that transversely links up groove 3.
The hollow pipeline 22 is externally provided with threads 23, the first fastening device 21 and the second fastening device 24 are nuts, and the first fastening device and the second fastening device are connected with the hollow pipeline through the threads.
The whiteboard pen fixing device 4 and the chalk fixing device 7 are respectively connected with a locking device 6.
The inner rings of the white board pen fixing device 4 and the chalk fixing device 7 are respectively provided with a first elastic layer 41 and a second elastic layer 71.
The first elastic layer 41 and the second elastic layer 71 are both elastic rubber material layers.
One end of the circle center supporting rod 2 is fixedly connected with an adsorption device 25 for adsorbing and fixing the circle center supporting rod on the blackboard and the whiteboard.
The adsorption device 25 is a suction cup.
The right side of the body 1 is provided with a handle 5.
the utility model specifically operates as follows: according to actual conditions, chalk or a whiteboard pen is inserted into the corresponding fixing device 4 or 7, the locking device 6 is fastened, then the fastening devices 21 and 24 are loosened, the circle center supporting rod 2 is moved to a proper position along the transverse through groove 3, the end of the circle center supporting rod 2 is pressed forcibly, the sucker is adsorbed on the whiteboard or the blackboard, the fastening devices 21 and 24 are locked, then the handle 5 is held by hand, and the body rotates around the circle center supporting rod 2 around the axis, so that a circle can be obtained.
Claims (8)
1. The utility model provides a drawing a circle teaching aid which characterized in that: including body (1), body (1) left side is provided with transversely link up groove (3), and the right side is provided with whiteboard pen fixing device (4) and chalk fixing device (7), transversely link up and be provided with centre of a circle branch (2) in groove (3), and this centre of a circle branch (2) overcoat is equipped with cavity pipeline (22), the both ends of cavity pipeline (22) are equipped with the first fastener of detachable (21) and second fastener (24), cavity pipeline (22) can be followed transversely and link up groove (3) and slide, first fastener (21) and second fastener (24) diameter all are greater than the groove width that transversely links up groove (3).
2. A cyclograph teaching aid as claimed in claim 1 wherein: the outer surface of the hollow pipeline (22) is provided with threads (23), the first fastening device (21) and the second fastening device (24) are nuts, and the first fastening device and the second fastening device are in threaded connection with the hollow pipeline.
3. A cyclograph teaching aid as claimed in claim 1 wherein: the whiteboard pen fixing device (4) and the chalk fixing device (7) are respectively connected with a locking device (6).
4. a cyclograph teaching aid as claimed in claim 1 wherein: the inner rings of the white board pen fixing device (4) and the chalk fixing device (7) are respectively provided with a first elastic layer (41) and a second elastic layer (71).
5. A cyclograph teaching aid as claimed in claim 4, wherein: the first elastic layer (41) and the second elastic layer (71) are both elastic rubber material layers.
6. A cyclograph teaching aid as claimed in claim 1 wherein: one end of the circle center supporting rod (2) is fixedly connected with an adsorption device (25) for adsorbing and fixing the circle center supporting rod on the blackboard and the whiteboard.
7. A cyclograph teaching aid as claimed in claim 6, wherein: the adsorption device (25) is a sucker device.
8. A cyclograph teaching aid as claimed in claim 1 wherein: the right side of the body (1) is provided with a fixed connecting handle (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920395560.XU CN209775964U (en) | 2019-03-27 | 2019-03-27 | Circle drawing teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920395560.XU CN209775964U (en) | 2019-03-27 | 2019-03-27 | Circle drawing teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209775964U true CN209775964U (en) | 2019-12-13 |
Family
ID=68799731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920395560.XU Expired - Fee Related CN209775964U (en) | 2019-03-27 | 2019-03-27 | Circle drawing teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209775964U (en) |
-
2019
- 2019-03-27 CN CN201920395560.XU patent/CN209775964U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 Termination date: 20210327 |