CN206067321U - A kind of mathematical education Geometric figure drawing special ruler - Google Patents
A kind of mathematical education Geometric figure drawing special ruler Download PDFInfo
- Publication number
- CN206067321U CN206067321U CN201620864993.1U CN201620864993U CN206067321U CN 206067321 U CN206067321 U CN 206067321U CN 201620864993 U CN201620864993 U CN 201620864993U CN 206067321 U CN206067321 U CN 206067321U
- Authority
- CN
- China
- Prior art keywords
- master body
- chi
- big disk
- angle scale
- fixed cylinder
- 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 kind of mathematical education Geometric figure drawing special ruler，Including master body，The master body is made up of the fixed cylinder between the big disk and big disk of upper and lower ends，The center of circle of big disk is with the center of circle of fixed cylinder on same vertical curve，The cavity of cylinder is offered on the big disk and fixed cylinder，Regulation chi rotating shaft is fitted with cavity，Angle scale is fixed with master body top surface，It is hollow connecting pole between angle scale and master body，On the angle scale, horizontal edge is provided with angle index line，Adjust chi rotating shaft upper end to stretch out above angle scale and regulation chi is installed，The regulation chi has roll adjustment groove，Length scale line is provided with chi top edge is adjusted，This device ensure that teacher carries out accurately drawing radius when geometric knowledge teaching is drawn on classroom、Circular pattern or arc pattern that angle is adapted to，Simple structure，It is flexible and convenient to use.
Description
Technical field
The utility model is related to teaching apparatus for mathematics field, specifically a kind of mathematical education Geometric figure drawing special ruler.
Background technology
Geometry is important course in mathematical education, is a subject for studying space structure and property, with analysis, algebraically
Etc. the status with no less important, and relation is extremely close, and each branch's development of temporary transient mathematics has geometrization to tend to, i.e.,
Go to inquire into each mathematical theory with geometrical point and the way of thinking.
When the teaching of geometry is carried out, the substantial amounts of drafting for carrying out image is needed, circular pattern and circle are carried out on blackboard
During the drafting of arc pattern, conventional drawing tools is that compasses are used and are inconvenient, for determination and the arc angle of radius
Really establish a capital and be difficult to ensure that accuracy, and as the effect of gravity usually can produce skew when drawing.
Utility model content
The purpose of this utility model is to provide a kind of mathematical education Geometric figure drawing special ruler, to solve above-mentioned background skill
The problem proposed in art.
For achieving the above object, the utility model provides following technical scheme：
A kind of mathematical education Geometric figure drawing special ruler, including master body, big disk of the master body by upper and lower ends
Fixed cylinder composition and big disk between, the center of circle of big disk and the center of circle of fixed cylinder are on same vertical curve, described big
The cavity of cylinder is offered on disk and fixed cylinder, regulation chi rotating shaft is fitted with cavity, it is solid on master body top surface
Fixed angled disk, is hollow connecting pole between angle scale and master body, and on the angle scale, horizontal edge is provided with angle index
Line, adjusts chi rotating shaft upper end and stretches out above angle scale and be provided with regulation chi, and the regulation chi has roll adjustment groove, is adjusting chi top
Face edge is provided with length scale line, and symmetrically arranged two clamping joints are slidably fitted with roll adjustment groove, and clamping joint is in arc-shaped,
Clamping joint has the adjusting knob for stretching out regulation ulnar surface, and pointer is provided with adjusting knob；It is provided between angle scale and master body
Two turning sets, the turning set are sleeved on outside connecting pole, and horizontal gag lever post, gag lever post front end peace are provided with turning set
Equipped with the montant with gag lever post bending downwards in 90 ° of angles, the montant bottom is provided with rotation magnetic stripe.
As further program of the utility model：The 3/4 of a diameter of big disk diameter of the fixed cylinder.
Compared with prior art, the beneficial effects of the utility model are：This device ensure that teacher is carried out on classroom
Geometric knowledge is imparted knowledge to students and the suitable circular pattern of radius, angle or arc pattern is accurately drawn when being drawn, simple structure,
It is flexible and convenient to use.
Description of the drawings
Fig. 1 is top view of the present utility model.
Fig. 2 is upward view of the present utility model.
Fig. 3 is the side view of master body in the utility model.
1- masters body in figure, 11- fixed cylinders, 2- angle scales, 3- regulation chis, 31- regulation chi rotating shafts, 32- roll adjustment grooves,
33- adjusting knobs, 34- clamping joints, 4- gag lever posts, 41- rotate magnetic stripe, 42- turning sets, 43- montants.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only the utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Fig. 1～3 are referred to, in the utility model embodiment, a kind of mathematical education Geometric figure drawing special ruler, including master
Body 1, the master body 1 are made up of the fixed cylinder 11 between the big disk and big disk of upper and lower ends, fixed cylinder 11 it is straight
Footpath for big disk diameter 3/4, the center of circle of big disk and the center of circle of fixed cylinder 11 on same vertical curve, the big disk and
The cavity of cylinder is offered in fixed cylinder 11, regulation chi rotating shaft 31 is fitted with cavity, it is fixed on 1 top surface of master body
Angled disk 2, is hollow connecting pole between angle scale 2 and master body 1, and on the angle scale 2, horizontal edge is provided with angle quarter
Degree line, adjusts 31 upper end of chi rotating shaft and stretches out above angle scale 2 and be provided with regulation chi 3, and the regulation chi 3 has roll adjustment groove 32,
Length scale line is provided with 3 top edge of chi is adjusted, and symmetrically arranged two clamping joints 34 is slidably fitted with roll adjustment groove 32,
In arc-shaped, clamping joint 34 has the adjusting knob 33 for stretching out 3 side of regulation chi to clamping joint 34, and pointer use is provided with adjusting knob 33
In alignment length graduation mark；Two turning sets 42,42 company of being sleeved on of the turning set are provided between angle scale 2 and master body 1
Connect outside post, horizontal gag lever post 4 is provided with turning set 2,4 front end of gag lever post is provided with downward in 90 ° of angles with gag lever post 4
The montant 43 of bending, 43 bottom of the montant are provided with rotation magnetic stripe 41；
When being mapped using this device, chalk can be fixed between two clamping joints 34, by mobile clamping joint 34
Circular radius size is drawn to determine, 4 alignment angle scale of gag lever post, 2 upper angle graduation mark is made by rotating turning set 42, is made
The angle for drawing circular arc between two gag lever posts 4 for needed for is obtained, and can rotate the rotation of magnetic stripe 41 is covered in rotation magnetic stripe 41
On master body 1, and then ensure that gag lever post 4 is fixed, it is ensured that gag lever post 4 when teaching is drawn is carried out on blackboard will not be made because of gravity
It is with skew, easy to use.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type is by claims rather than described above is limited, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as restriction
Involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art
Understandable other embodiment.
Claims (2)
1. a kind of mathematical education Geometric figure drawing special ruler, including master body, it is characterised in that the master body is by upper and lower ends
Big disk and big disk between fixed cylinder composition, the center of circle of big disk and the center of circle of fixed cylinder are in same vertical curve
On, the cavity of cylinder is offered on the big disk and fixed cylinder, regulation chi rotating shaft is fitted with cavity, in master body
Angle scale is fixed with top surface, is hollow connecting pole between angle scale and master body, horizontal edge is provided with the angle scale
Angle index line, adjusts chi rotating shaft upper end and stretches out above angle scale and be provided with regulation chi, and the regulation chi has roll adjustment groove,
Adjust chi top edge and be provided with length scale line, symmetrically arranged two clamping joints, clamping joint are slidably fitted with roll adjustment groove
In arc-shaped, clamping joint has the adjusting knob for stretching out regulation ulnar surface, and pointer is provided with adjusting knob；In angle scale and master body
Between be provided with two turning sets, the turning set is sleeved on outside connecting pole, and horizontal gag lever post is provided with turning set, spacing
Bar front end is provided with the montant with gag lever post bending downwards in 90 ° of angles, and the montant bottom is provided with rotation magnetic stripe.
2. a kind of mathematical education Geometric figure drawing special ruler according to claim 1, it is characterised in that the fixed cylinder
A diameter of big disk diameter 3/4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620864993.1U CN206067321U (en) | 2016-08-11 | 2016-08-11 | A kind of mathematical education Geometric figure drawing special ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620864993.1U CN206067321U (en) | 2016-08-11 | 2016-08-11 | A kind of mathematical education Geometric figure drawing special ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206067321U true CN206067321U (en) | 2017-04-05 |
Family
ID=58425719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620864993.1U Expired - Fee Related CN206067321U (en) | 2016-08-11 | 2016-08-11 | A kind of mathematical education Geometric figure drawing special ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206067321U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109345919A (en) * | 2018-08-31 | 2019-02-15 | 南京理工大学 | A kind of force analysis tool convenient for mechanics course |
-
2016
- 2016-08-11 CN CN201620864993.1U patent/CN206067321U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109345919A (en) * | 2018-08-31 | 2019-02-15 | 南京理工大学 | A kind of force analysis tool convenient for mechanics course |
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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 |
Granted publication date: 20170405 Termination date: 20170811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |