CN207942849U - A kind of mathematic(al) construction tool - Google Patents
A kind of mathematic(al) construction tool Download PDFInfo
- Publication number
- CN207942849U CN207942849U CN201721230822.4U CN201721230822U CN207942849U CN 207942849 U CN207942849 U CN 207942849U CN 201721230822 U CN201721230822 U CN 201721230822U CN 207942849 U CN207942849 U CN 207942849U
- Authority
- CN
- China
- Prior art keywords
- fixed
- ruler
- sliding
- protractor
- mathematic
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model is related to a kind of mathematic(al) construction tools, including circular ring shape protractor, protractor circle centre position is provided with fixed column, protractor is fixed on by fixed ruler rotation in fixed column, fixed ruler both ends are connected with the inner wall of protractor, fixed ruler both ends are both provided with sliding slot along its length, sliding block is provided in sliding slot, it is connected with connecting rope between two sliding blocks, sliding is provided with the first chalk sleeve in connecting rope, rotation is provided with movable ruler in fixed column below fixed ruler, it is provided with carriage on movable ruler, the second chalk sleeve is equipped on carriage, fixed column bottom is provided with sucker；The utility model is simple in structure, easy to use, meets the drafting of Common graphical in mathematical education, improves drawing efficiency and drawing accuracy.
Description
Technical field
The utility model is related to teaching aid technical field, specifically a kind of mathematic(al) construction tool.
Background technology
During mathematical education, need many assistant teaching aids to complete to map, for example, ruler, compasses, ellipsograph,
Set square and protractor, teacher at school when need mapping when, to carry many drawing tools, so very bother,
It needs that a variety of drawing tools are used alternatingly when picture, wastes time in this way and waste muscle power, in addition there are also a little combination rulers
Body is still because a variety of ruler bodies combine so that ruler body is inconvenient to carry, it is therefore desirable to a kind of that a variety of drawing tools are combined and square
The mathematics teaching aid of Portable belt.
Utility model content
Against the above deficiency, easy to use the purpose of the utility model is to provide a kind of simple in structure, meet mathematics
The drafting of Common graphical in teaching improves drawing efficiency and the mathematic(al) construction tool of drawing accuracy.
To achieve the above object, the utility model provides following technical scheme：A kind of mathematic(al) construction tool, including circular ring shape
Protractor, protractor circle centre position are provided with fixed column, and protractor is fixed on by fixed ruler rotation in fixed column, fixed ruler
Both ends are connected with the inner wall of protractor, and fixed ruler both ends are both provided with sliding slot along its length, are provided in sliding slot
Sliding block is connected with connecting rope between two sliding blocks, in connecting rope sliding be provided with the first chalk sleeve, the fixed column below fixed ruler
Upper rotation is provided with movable ruler, and carriage is provided on movable ruler, the second chalk sleeve is equipped on carriage, fixed
Column bottom is provided with sucker.
The scheme advanced optimized, fixed column top are provided with positioning plate, the first locking are equipped on positioning plate
Bolt.
The scheme further optimized, the carriage include sliding panel, and sliding panel one end bottom, which is provided with, to be arranged
Sliding seat on movable ruler is equipped with the second clamping screw for fixing sliding panel on the sliding panel above sliding seat.
The scheme further optimized, the second chalk sleeve activity are threaded through on sliding panel, at the top of the second chalk sleeve
It is provided with pressing plate, the spring being set on the second chalk sleeve is connected between pressing plate and sliding panel, is set on the second chalk sleeve
The limiting plate being equipped with below sliding panel.
The scheme further optimized is provided with the observation for observing movable ruler high scale on the sliding panel
Window.
The utility model has an advantageous effect in that compared with prior art：The utility model is simple in structure, easy to use,
The drafting for meeting Common graphical in mathematical education improves drawing efficiency and drawing accuracy.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial enlarged view in the portions A in Fig. 1；
Fig. 3 is the side schematic view of the utility model；
Fig. 4 is the structural schematic diagram of carriage.
Figure label is：1- protractors, 2- fixed columns, 3- fix ruler, 31- sliding slots, 4- sliding blocks, 5- connecting ropes, 6- the
One chalk sleeve, 7- activities ruler, the second chalk sleeves of 8-, 9- suckers, 10- positioning plates, the first clamping screws of 11-, 12- sliding panels,
121- observation windows, 13- sliding seats, the second clamping screws of 14-, 15- pressing plate, 16- springs, 17- limiting plates.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
In the description of the present invention, it should be understood that term " longitudinal direction ", " transverse direction ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" be based on
Orientation or positional relationship shown in the drawings is merely for convenience of description the utility model, does not indicate or imply the indicated dress
It sets or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to the utility model
Limitation.
With reference to attached drawing 1-4 it is found that a kind of mathematic(al) construction tool, including circular ring shape protractor 1,1 circle centre position of protractor are arranged
Have a fixed column 2, protractor 1 is fixed on by the fixed rotation of ruler 3 in fixed column 2,3 both ends of fixed ruler with protractor 1
Inner wall is connected, and 3 both ends of fixed ruler are both provided with sliding slot 31 along its length, and sliding block 4, two sliding blocks are provided in sliding slot 31
It is connected with connecting rope 5 between 4, is slided in connecting rope 5 and is provided with the first chalk sleeve 6, turns in the fixed column 2 of 3 lower section of fixed ruler
It is dynamic to be provided with movable ruler 7, it is provided with carriage on movable ruler 7, the second chalk sleeve 8 is equipped on carriage, it is fixed
3 bottom of column is provided with sucker 9.
Further, 2 top of fixed column is provided with positioning plate 10, and the first clamping screw is equipped on positioning plate 10
11。
Further, the carriage includes sliding panel 12, and 12 one end bottom of sliding panel is provided with the activity of being set in
Sliding seat 13 on ruler 7 is equipped with the second locking screw for fixing sliding panel 12 on the sliding panel 12 of the top of sliding seat 13
Bolt 14.
Further, 8 activity of the second chalk sleeve is threaded through on sliding panel 12, is provided at the top of the second 8 sets of chalk
Pressing plate 15 is connected with the spring 16 being set on the second chalk sleeve 8, the second chalk sleeve 8 between pressing plate 15 and sliding panel 12
On be provided with the limiting plate 17 positioned at the lower section of sliding panel 12；In use, by pressing pressing plate 15,8 sets of the second chalk is made to move down,
Chalk in second chalk sleeve 8 with paint with blackboard contact, when being not suitable for, the second chalk sleeve 8 is under the effect of spring 16
It moves up, the chalk lower end in the second chalk sleeve 8 is detached from blackboard surface, prevents chalk from arbitrarily being scribbled on blackboard surface.
Further, the observation window 121 for observing 7 high scale of movable ruler is provided on the sliding panel 12.
When the utility model is used, chalk is inserted into the first and second chalk sleeve, it is movable straight by the way that carriage to be moved to
Target scale on ruler, rotary moveable ruler are drawn to complete different size of circle, and two intersections for drawing certain angle are straight
When line, movable ruler is first directed to some upper angle of protractor, mobile sliding device draws straight line, then will be movable straight
Ruler is directed at the angle index calculated, and mobile sliding device completes the drafting of Article 2 straight line, when drawing oval, mobile two cunnings
The distance between block, then mobile first chalk sleeve draw different size of ellipse.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (5)
1. a kind of mathematic(al) construction tool, it is characterised in that：Including circular ring shape protractor, protractor circle centre position is provided with fixed column,
Protractor is fixed on by fixed ruler rotation in fixed column, and fixed ruler both ends are connected with the inner wall of protractor, fixed straight
Ruler both ends are both provided with sliding slot along its length, and sliding block is provided in sliding slot, and connecting rope is connected between two sliding blocks, connection
Sliding is provided with the first chalk sleeve on rope, is rotated in the fixed column below fixed ruler and is provided with movable ruler, on movable ruler
It is provided with carriage, the second chalk sleeve is equipped on carriage, fixed column bottom is provided with sucker.
2. a kind of mathematic(al) construction tool according to claim 1, it is characterised in that：It is fixed to be provided at the top of the fixed column
Position plate, is equipped with the first clamping screw on positioning plate.
3. a kind of mathematic(al) construction tool according to claim 1, it is characterised in that：The carriage includes sliding
Plate, sliding panel one end bottom are provided with the sliding seat being set on movable ruler, are worn on the sliding panel above sliding seat useful
In the second clamping screw of fixed sliding panel.
4. a kind of mathematic(al) construction tool according to claim 3, it is characterised in that：The second chalk sleeve activity is worn
On sliding panel, it is provided with pressing plate at the top of the second chalk sleeve, is connected between pressing plate and sliding panel and is set in the second chalk
Spring on set, the limiting plate being provided on the second chalk sleeve below sliding panel.
5. a kind of mathematic(al) construction tool according to claim 3, it is characterised in that：It is provided with and is used on the sliding panel
The observation window of observation activity ruler high scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721230822.4U CN207942849U (en) | 2017-09-16 | 2017-09-16 | A kind of mathematic(al) construction tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721230822.4U CN207942849U (en) | 2017-09-16 | 2017-09-16 | A kind of mathematic(al) construction tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207942849U true CN207942849U (en) | 2018-10-09 |
Family
ID=63703296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721230822.4U Expired - Fee Related CN207942849U (en) | 2017-09-16 | 2017-09-16 | A kind of mathematic(al) construction tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207942849U (en) |
-
2017
- 2017-09-16 CN CN201721230822.4U patent/CN207942849U/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: 20181009 Termination date: 20190916 |