CN205395553U - Multi -purpose setting -out chi of mathematical education - Google Patents
Multi -purpose setting -out chi of mathematical education Download PDFInfo
- Publication number
- CN205395553U CN205395553U CN201620145574.2U CN201620145574U CN205395553U CN 205395553 U CN205395553 U CN 205395553U CN 201620145574 U CN201620145574 U CN 201620145574U CN 205395553 U CN205395553 U CN 205395553U
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- CN
- China
- Prior art keywords
- chi
- secondary chi
- main scale
- positioning
- length
- 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.)
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- 241000606706 Chione <angiosperm> Species 0.000 claims abstract description 3
- 230000000875 corresponding Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002372 labelling Methods 0.000 description 1
Abstract
The utility model discloses a multi -purpose setting -out chi of mathematical education, including the vice chi of main scale, the first pair of chi and second, the vice chi one end of main scale, the first pair of chi and second is connected through main pivot, and main scale, the first pair of chi and the vice chi of second overlap mutually, and the first pair of chi is located between main scale and a second pair upper part of cunkou pulse, still be equipped with the connecting rod in the main pivot, the connecting rod other end is connected with the protractor through driven chain wheel, the connecting rod is fixed connection with the connected mode of main pivot, it is protruding that the lower part of main scale is provided with the location along the chi face, and this device has improved the practicality of installing through set up main scale, first pair of chi, the vice chi of second and protractor in main pivot, the folding line of the different angles of not only can drawing up to the different radial circles that can draw up can also be measured the angle between the current lines simultaneously, quick accurate satisfy the teaching demand on the mathematics classroom, have reduced mr's the work degree of difficulty, have improved the quality of instruction.
Description
Technical field
This utility model relates to teaching aid field, specifically a kind of multiplex line drawing ruler of mathematical education.
Background technology
Mathematics is a science of research respective real-world spaces form and quantitative relation. it is divided into elementary mathematics and higher mathematics. and its application in scientific development and the modern life produce is widely, it is study and the research requisite basic tool of modern science and technology, high school mathematics is in the transition stage formed a connecting link, and the study for Other subjects has the effect do not replaced.
In the teaching of high school mathematics, need the angle drawing various geometric figure and various angle, in order to realize the drafting of these lines, need to prepare various instruments, carry cumbersome, and if forget one therein, the difficulty of drafting will be increased, for classroom instruction now, it is necessary to a kind of instrument that can quickly carry out various graphic plotting is improved the quality of teaching and efficiency.
Utility model content
The purpose of this utility model is in that to provide a kind of multiplex line drawing ruler of mathematical education, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
A kind of multiplex line drawing ruler of mathematical education, including main scale, the first secondary chi and the second secondary chi, described main scale, the first secondary chi and second secondary chi one end are connected by main shaft, main scale, the first secondary chi and the second secondary chi overlap each other, first secondary chi is positioned in the middle of main scale and the second secondary chi, being additionally provided with connecting rod on described main shaft, the described connecting rod other end is connected to protractor by auxiliary spindle, and described connecting rod is connected for fixing with the connected mode of main shaft；The bottom of described main scale is provided with positioning convex along chi face, the left side of positioning convex and the left end of main scale are provided with positioning seat, it is arranged below positioning needle at positioning seat, positioning convex is provided with the sliding seat being slidably connected with it, described sliding seat is provided with sliding knob, the sliding seat of sliding knob side is provided with positioning sleeve and is secured to connect, positioning sleeve is installed with the chalk sleeve being slidably connected with it, corresponding positioning sleeve is provided with chalk navigation button, orthogonal setting between chalk sleeve and positioning convex, the upper end of chalk sleeve is provided with locating piece, described main scale is provided with scale along its length；Described first secondary chi front end is tip-angled shape, is provided with centrage at the first secondary chi length direction center, and centrage one end is connected with the fixed point of the first secondary ruler end part wedge angle, is provided with level indicator on the second secondary chi.
As further program of the utility model: the length of described main scale is the length of secondary chi more than first.
As this utility model further scheme: the length of the described first secondary chi is the length of secondary chi more than second.
Compared with prior art, the beneficial effects of the utility model are: this device by arranging main scale, the first secondary chi, the second secondary chi and protractor on main shaft, improve the practicality of device, the folding line of different angles can not only be drawn, and the circle of different radii can be drawn, the angle between existing lines can also be measured simultaneously, meet the teaching demand in mathematics classroom fast and accurately, reduce the work difficulty of teacher, improve quality of instruction.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1-main shaft in figure, 2-main scale, 21-positioning seat, 211-positioning needle, 22-positioning convex, 23-positioning sleeve, 231-chalk sleeve, 232-chalk navigation button, 24-sliding seat, 241-sliding knob, 25-scale, 26-locating piece, the secondary chi of 3-first, 31-centrage, the secondary chi of 4-second, 41-level indicator, 5-protractor, 51-auxiliary spindle, 52-connecting rod.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1, in this utility model embodiment, a kind of multiplex line drawing ruler of mathematical education, including the secondary chi of main scale 2, first 3 and the second secondary chi 4, the described secondary chi of main scale 2, first 3 and second secondary chi 4 one end are connected by main shaft 1, the secondary chi of main scale 2, first 3 and the second secondary chi 4 overlap each other, first secondary chi 3 is positioned in the middle of main scale 2 and the second secondary chi 4, described main shaft 1 is additionally provided with connecting rod 52, described connecting rod 52 other end is connected to protractor 5 by auxiliary spindle 51, and described connecting rod 52 is connected for fixing with the connected mode of main shaft 1；
nullThe bottom of described main scale 2 is provided with positioning convex 22 along chi face，Left end in the left side of positioning convex 22 and main scale 2 is provided with positioning seat 21，It is arranged below positioning needle 211 at positioning seat 21，Positioning convex 21 is provided with the sliding seat 24 being slidably connected with it，Described sliding seat 24 is provided with sliding knob 241，The sliding seat 24 of sliding knob 241 side is provided with positioning sleeve 23 and is secured to connect，Positioning sleeve 23 is installed with the chalk sleeve 231 being slidably connected with it，Corresponding positioning sleeve 23 is provided with chalk navigation button 232，Orthogonal setting between chalk sleeve 231 and positioning convex 22，The upper end of chalk sleeve 231 is provided with locating piece 26，Described main scale 2 is provided with scale 25 along its length，During use，Chalk is placed in chalk sleeve 231，Can according to circumstances regulate the chalk sleeve 231 position in positioning sleeve 23，Positioning needle 211 on positioning seat 21 is fixed on blackboard，By rotational slide knob 241，Regulate the sliding seat 24 position on positioning convex 22，And from locating piece 26, read required radius，Picture circle can be carried out around positioning needle 211，Easy to use；
Described first secondary chi 3 front end is tip-angled shape, it is provided with centrage 31 at the first secondary chi 3 length direction center, centrage 31 one end is connected with the fixed point of the first secondary chi 3 end wedge angle, second secondary chi 4 is provided with level indicator 41, level indicator 41 carries out setting-out timer main body whether level for observation, the length of described main scale 2 is the length of secondary chi 3 more than first, the length of the first secondary chi 3 is the length of secondary chi 4 more than second, when carrying out setting-out, by rotating the first secondary chi 3 and the second secondary chi 4, in order to draw the folding line of different angles.
Operation principle of the present utility model is: this device by arranging the secondary chi of main scale 2, first 3, second secondary chi 4 and protractor 5 on main shaft 1, improve the practicality of device, the folding line of different angles can not only be drawn, and the circle of different radii can be drawn, angle between existing lines can also be measured simultaneously, meet the teaching demand in mathematics classroom fast and accurately, reduce the work difficulty of teacher, improve quality of instruction.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and when without departing substantially from spirit of the present utility model or basic feature, it is possible to realize this utility model in other specific forms.Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in this utility model.Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, and the technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. the multiplex line drawing ruler of mathematical education, including main scale, the first secondary chi and the second secondary chi, it is characterized in that, described main scale, the first secondary chi and second secondary chi one end are connected by main shaft, main scale, the first secondary chi and the second secondary chi overlap each other, and the first secondary chi is positioned in the middle of main scale and the second secondary chi, and described main shaft is additionally provided with connecting rod, the described connecting rod other end is connected to protractor by auxiliary spindle, and described connecting rod is connected for fixing with the connected mode of main shaft；The bottom of described main scale is provided with positioning convex along chi face, the left side of positioning convex and the left end of main scale are provided with positioning seat, it is arranged below positioning needle at positioning seat, positioning convex is provided with the sliding seat being slidably connected with it, described sliding seat is provided with sliding knob, the sliding seat of sliding knob side is provided with positioning sleeve and is secured to connect, positioning sleeve is installed with the chalk sleeve being slidably connected with it, corresponding positioning sleeve is provided with chalk navigation button, orthogonal setting between chalk sleeve and positioning convex, the upper end of chalk sleeve is provided with locating piece, described main scale is provided with scale along its length；Described first secondary chi front end is tip-angled shape, is provided with centrage at the first secondary chi length direction center, and centrage one end is connected with the fixed point of the first secondary ruler end part wedge angle, is provided with level indicator on the second secondary chi.
2. a kind of multiplex line drawing ruler of mathematical education according to claim 1, it is characterised in that the length of described main scale is the length of secondary chi more than first.
3. a kind of multiplex line drawing ruler of mathematical education according to claim 1, it is characterised in that the length of the described first secondary chi is the length of secondary chi more than second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620145574.2U CN205395553U (en) | 2016-02-27 | 2016-02-27 | Multi -purpose setting -out chi of mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620145574.2U CN205395553U (en) | 2016-02-27 | 2016-02-27 | Multi -purpose setting -out chi of mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205395553U true CN205395553U (en) | 2016-07-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620145574.2U Expired - Fee Related CN205395553U (en) | 2016-02-27 | 2016-02-27 | Multi -purpose setting -out chi of mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205395553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160918A (en) * | 2016-08-07 | 2017-09-15 | 刘凤娇 | The special drawing combination tool of mathematics teacher's writing on the blackboard |
-
2016
- 2016-02-27 CN CN201620145574.2U patent/CN205395553U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160918A (en) * | 2016-08-07 | 2017-09-15 | 刘凤娇 | The special drawing combination tool of mathematics teacher's writing on the blackboard |
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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 |
Granted publication date: 20160727 Termination date: 20180227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |