CN205951558U - A teaching aid for drawing circle - Google Patents
A teaching aid for drawing circle Download PDFInfo
- Publication number
- CN205951558U CN205951558U CN201620463355.9U CN201620463355U CN205951558U CN 205951558 U CN205951558 U CN 205951558U CN 201620463355 U CN201620463355 U CN 201620463355U CN 205951558 U CN205951558 U CN 205951558U
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- CN
- China
- Prior art keywords
- sleeve
- teaching aid
- wall
- circle
- chalk
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Abstract
The utility model relates to the technical field of teaching aids, a teaching aid for drawing circle, the toughened glass storage apparatus comprises a pedestal, install the stand on the base, be equipped with the guide rail on the stand, the outside of stand is equipped with the sleeve, be equipped with the spout on the telescopic inner wall, establish first spiral guide slot and second spiral guide slot on the telescopic outer wall, telescopic outside is equipped with round ring frame, circle ring frame's inner wall is equipped with first guide post and second guide post, be equipped with along radial scale on circle ring frame's the outer wall, be equipped with chalk clip on the outer end of scale. The utility model has the advantages of reasonable and compact structure, convenient to use, it converts telescopic linear motion into round ring frame's circular motion, can accomplish the operation of drawing circle so only need the teacher to press the sleeve downwards, can once only accomplish the drawing circle, has guaranteed the quality of drawing the circle, has improved and has drawn circle efficiency, has safe, laborsaving, simple and convenient, efficient characteristics.
Description
Technical field
This utility model is related to teaching aid technical field, is a kind of for drawing round teaching aid.
Background technology
In education activities, teacher is frequently necessary to compasses in blackboard upper drawing circle, and common compasses are during using
There are the following problems：Due to blackboard perpendicular to horizontal plane, therefore teacher when using compasses, need hands to fix with a needle
Supporting leg, another holds supporting leg with pen and carries out picture circle, during drawing circle, because supporting leg with a needle easily slides, because
The circle that this draws is usually irregular；In addition, circle cannot disposably be drawn by this method, paint half circular arc or more than half
During circular arc, need to stop, allow the supporting leg of compasses bypass arm, continue picture circle, therefore, supporting leg with a needle needs again to find circle
The heart, easily causes deviation, the quality of impact picture circle and efficiency.
Content of the invention
This utility model provide a kind of overcome the deficiency of above-mentioned prior art for drawing round teaching aid, it can be effective
Solve the supporting leg with a needle that existing educational compasses exist in use easily to slide, draw the irregular problem of circle, and not
Picture circle can disposably be completed, need again to find the problem in the center of circle, impact picture circle quality and efficiency.
The technical solution of the utility model is realized by following measures：A kind of for drawing round teaching aid, the bottom of including
Seat, base is installed with column, the outer wall of column is provided with guide rail, and the outside of column is provided with sleeve, on the inwall of sleeve
It is provided with the chute matching with guide rail, sleeve is arranged on the guide rail of column by chute, the outer wall of sleeve is provided with mutually flat
First helical guide groove of row and the second helical guide groove, the outside of sleeve is provided with annulus frame, and the inwall of annulus frame is provided with and the first spiral shell
Rotation the first lead of matching of guide groove and the second lead matching with the second helical guide groove, annulus frame passes through the respectively
One lead, the second lead are arranged in the first helical guide groove and the second helical guide groove, and the outer wall of annulus frame is provided with along footpath
To rule, the outer end of rule is provided with chalk clamp.
Further optimization and/or improvements to above-mentioned utility model technical scheme are presented herein below：
The outer wall of above-mentioned annulus frame is provided with support arm, and support arm is located at the opposite of rule, and the outer end of support arm is provided with
Support wheel.
Above-mentioned rule is scalable rule；Or/and, base is provided with leather cup.
Above-mentioned also include spring for drawing round teaching aid, spring housing on the outer wall of column, the fixed installation of the lower end of spring
On base, the upper end of spring is connected with the bottom of sleeve；Or/and, the upper end of sleeve is provided with and pushes handle.
The upper inside wall of above-mentioned sleeve is provided with first step, and the upper end of guide rail is seated on first step；Or/and, chalk
Chalk is installed in folder.
This utility model reasonable and compact in structure, easy to use, the linear motion of sleeve is converted to the circle of annulus frame by it
Zhou Yundong, so only needing teacher to press down on sleeve can complete picture circle operation, can disposably complete picture circle it is ensured that drawing circle
Quality, improve picture justify efficiency, there is safe, laborsaving, easy, efficient feature.
Brief description
Accompanying drawing 1 is the main structure diagram of this utility model most preferred embodiment.
Accompanying drawing 2 is the cross section structure diagram in accompanying drawing 1 at A-A.
Accompanying drawing 3 is the cross section structure diagram in accompanying drawing 1 at B-B.
Accompanying drawing 4 is the overlooking the structure diagram of accompanying drawing 1 central post.
Accompanying drawing 5 is the overlooking the structure diagram of accompanying drawing 1 middle sleeve.
Accompanying drawing 6 is the overlooking the structure diagram of annulus frame in accompanying drawing 1.
Coding in accompanying drawing is respectively：1 is base, and 2 is column, and 3 is guide rail, and 4 is sleeve, and 5 is chute, and 6 is the first spiral shell
Rotation guide groove, 7 is annulus sleeve, and 8 is the first lead, and 9 is the second lead, and 10 is rule, and 11 is chalk clamp, and 12 is to support
Arm, 13 is support wheel, and 14 is leather cup, and 15 is spring, and 16 is first step, and 17 is chalk, and 18 is handle, and 19 is blackboard.
Specific embodiment
This utility model is not limited by following embodiments, can according to the technical solution of the utility model and practical situation Lai
Determine specific embodiment.
In this utility model, for the ease of description, the description of the relative position relation of each part is all according to description
The Butut mode of accompanying drawing 1 being described, such as：The position relationship of forward and backward, upper and lower, left and right etc. is according to Figure of description
Butut direction determining.
With reference to embodiment and accompanying drawing, this utility model is further described：
As shown in accompanying drawing 1,2,3,4,5,6, the teaching aid that this is used for picture circle includes base 1, and base 1 is installed with column
2, the outer wall of column 2 is provided with guide rail 3, and the outside of column 2 is provided with sleeve 4, and the inwall of sleeve 4 is provided with and is matched with guide rail 3
Chute 5, sleeve 4 is arranged on the guide rail 3 of column 2 by chute 5, and the outer wall of sleeve 4 is provided with the first spiral shell being parallel to each other
Rotation guide groove 6 and the second helical guide groove, the outside of sleeve 4 is provided with annulus frame 7, and the inwall of annulus frame 7 is provided with and the first helical guide groove 6
The first lead 8 matching and the second lead 9 matching with the second helical guide groove, annulus frame 7 passes through first respectively
Lead 8, the second lead 9 are arranged in the first helical guide groove 6 and the second helical guide groove, and the outer wall of annulus frame 7 is provided with edge
The rule 10 of radial direction, the outer end of rule 10 is provided with chalk clamp 11.When using, piece of chalk is installed on chalk clamp 11
17, base 1 is pressed on blackboard, column 2, perpendicular to blackboard, is made the lower end of chalk 17 be contacted with blackboard, presses down on sleeve 4,
Because annulus frame 7 and rule 10 are contacted with blackboard, so annulus frame 7 cannot move further downward, on sleeve 4
In the presence of one helical guide groove 6 and the second helical guide groove, annulus frame 7 and rule 10 can rotate on blackboard, and rule 10 carries
Dynamic chalk 17 carries out picture and justifies operation, due to employing the cooperation of the first helical guide groove 6 and the first lead 8, and the second spiral
Guide groove and the cooperation of the second lead 9, the linear motion of sleeve 4 are converted to the circular motion of annulus frame 7, so only needing teacher
Press down on sleeve 4 and can complete picture circle operation, can disposably completing picture circle it is ensured that drawing the quality of circle, improve picture circle
Efficiency.The bottom of base 1 is provided with annular mounting groove, and the bottom of annulus frame 7 is arranged in annular mounting groove, plays the work of clamping
With annulus frame 7 can be rotatably mounted on base 1；The upper end of sleeve 4 is installed with handle 18.
Can make further optimization and/or improvements for drawing round teaching aid to above-mentioned according to actual needs：
As shown in accompanying drawing 1,2,6, the outer wall of above-mentioned annulus frame 7 is provided with support arm 12, and support arm 12 is located at rule 10
Opposite, the outer end of support arm 12 is provided with support wheel 13.Support arm 12 and support wheel 13 can provide for annulus frame 7 and support, and makes
Obtain being more uniformly stressed of annulus frame 7 both sides, so, when bowlder drawn by the chalk 17 of rule 10 end, support wheel 13 is in blackboard
Roll on 19 so that support wheel 13, support arm 12, annulus frame 7, rule 10, chalk 17 form an entirety, and support wheel 13
Define at 2 points with chalk 17 to support so that chalk 17 draws bowlder more steadily it is ensured that drawing circle quality.
As shown in accompanying drawing 1,2,6, above-mentioned rule 10 is scalable rule.As such, it is possible to by adjusting rule 10
The length stretched out, the radius of adjustment picture circle, flexible operation, it is suitable for the needs of the circle of picture various sizes.
As shown in accompanying drawing 1,4, above-mentioned base 1 is provided with leather cup 14.As such, it is possible to base 1 be adsorbed by leather cup 14
It is not necessary to a hand steered firmly base 1, mitigate operation intensity, the position in the center of circle is fixed it is ensured that drawing the quality of circle on blackboard 19.
As shown in accompanying drawing 1,2,3,6, above-mentioned also include spring 15 for drawing round teaching aid, spring 15 is enclosed within the outer of column 2
On wall, the lower end of spring 15 is fixedly mounted on base 1, and the upper end of spring 15 is connected with the bottom of sleeve 4.So, when picture circle
After end, spring 15 recovers length under its own resilient effect, thus sleeve 4 is pushed up to top resetting, does for drawing circle next time
Good preparation.
The upper end of above-mentioned sleeve 4 is provided with and pushes handle.As such, it is possible to convenient pressing sleeve 4, improve picture and justify efficiency.
As shown in accompanying drawing 1,2,3,6, the upper inside wall of above-mentioned sleeve 4 is provided with first step 16, and the upper end of guide rail 3 is seated in
On first step 16.So, the chute 5 on sleeve 4 does not reach bottom, the upper end closed of chute 5, prevents sleeve 4 from leaving column
2.
As shown in Figure 1, in chalk clamp 11, chalk 17 is installed.So, chalk clamp 11 is installed chalk 17, you can
Carry out picture and justify operation.
Above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger adaptability and optimal enforcement
Effect, can increase and decrease non-essential technical characteristic according to actual needs, to meet the demand of different situations.
The use process of this utility model most preferred embodiment：
Base 1 is adsorbed on blackboard 19 by leather cup 14, column 2 is perpendicular to blackboard 19；One is installed in chalk clamp 11
Prop up chalk 17, so that the lower end of chalk 17 is contacted with blackboard 19；Press down on sleeve 4, first helical guide groove 6 and on sleeve 4
In the presence of two helical guide grooves, annulus frame 7 and rule 10 can rotate on blackboard 19, and rule 10 drives chalk 17 to carry out picture
Circle operation, due to employing the cooperation of the first helical guide groove 6 and the first lead 8, and the second helical guide groove and the second guiding
The cooperation of post 9, the linear motion of sleeve 4 is converted to the circular motion of annulus frame 7, so only needing teacher to press down on sleeve 4
Picture being completed and justify operation, can disposably completing picture circle it is ensured that drawing the quality of circle, improve picture and justify efficiency.
Claims (9)
1. a kind of for draw round teaching aid it is characterised in that include base, base is installed with column, on the outer wall of column
It is provided with guide rail, the outside of column is provided with sleeve, and the inwall of sleeve is provided with the chute matching with guide rail, and sleeve is pacified by chute
It is contained on the guide rail of column, the outer wall of sleeve is provided with the first helical guide groove being parallel to each other and the second helical guide groove, sleeve
Outside is provided with annulus frame, the inwall of annulus frame be provided with the first lead matching with the first helical guide groove and with the second spiral
The second lead that guide groove matches, annulus frame is arranged on the first helical guide groove by the first lead, the second lead respectively
In the second helical guide groove, the outer wall of annulus frame is provided with rule radially, and the outer end of rule is provided with chalk clamp.
2. according to claim 1 for drawing round teaching aid it is characterised in that the outer wall of annulus frame is provided with support arm,
Brace is located at the opposite of rule, and the outer end of support arm is provided with support wheel.
3. according to claim 1 and 2 for draw round teaching aid it is characterised in that rule be scalable rule；Or/
With leather cup is provided with base.
4. according to claim 1 and 2 for draw round teaching aid it is characterised in that for picture circle teaching aid also include bullet
Spring, on the outer wall of column, the lower end of spring is fixedly mounted on base spring housing, and the upper end of spring is connected with the bottom of sleeve
Connect；Or/and, the upper end of sleeve is provided with and pushes handle.
5. according to claim 3 for draw round teaching aid it is characterised in that for picture circle teaching aid also include spring, bullet
Spring is enclosed within the outer wall of column, and the lower end of spring is fixedly mounted on base, and the upper end of spring is connected with the bottom of sleeve；Or/
With the upper end of sleeve is provided with and pushes handle.
6. according to claim 1 and 2 for drawing round teaching aid it is characterised in that the upper inside wall of sleeve is provided with First
Rank, the upper end of guide rail is seated on first step；Or/and, chalk is installed in chalk clamp.
7. according to claim 3 for drawing round teaching aid it is characterised in that the upper inside wall of sleeve is provided with first step,
The upper end of guide rail is seated on first step；Or/and, chalk is installed in chalk clamp.
8. according to claim 4 for drawing round teaching aid it is characterised in that the upper inside wall of sleeve is provided with first step,
The upper end of guide rail is seated on first step；Or/and, chalk is installed in chalk clamp.
9. according to claim 5 for drawing round teaching aid it is characterised in that the upper inside wall of sleeve is provided with first step,
The upper end of guide rail is seated on first step；Or/and, chalk is installed in chalk clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620463355.9U CN205951558U (en) | 2016-05-20 | 2016-05-20 | A teaching aid for drawing circle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620463355.9U CN205951558U (en) | 2016-05-20 | 2016-05-20 | A teaching aid for drawing circle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205951558U true CN205951558U (en) | 2017-02-15 |
Family
ID=57967444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620463355.9U Expired - Fee Related CN205951558U (en) | 2016-05-20 | 2016-05-20 | A teaching aid for drawing circle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205951558U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301032A (en) * | 2020-03-27 | 2020-06-19 | 西安石油大学 | Compasses device |
| CN113492611A (en) * | 2021-08-11 | 2021-10-12 | 浙江工业职业技术学院 | Novel compasses for teaching |
-
2016
- 2016-05-20 CN CN201620463355.9U patent/CN205951558U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301032A (en) * | 2020-03-27 | 2020-06-19 | 西安石油大学 | Compasses device |
| CN113492611A (en) * | 2021-08-11 | 2021-10-12 | 浙江工业职业技术学院 | Novel compasses for teaching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20170215 Termination date: 20170520 |