CN106142934A - A kind of teaching aid drawing angular bisector - Google Patents
A kind of teaching aid drawing angular bisector Download PDFInfo
- Publication number
- CN106142934A CN106142934A CN201610577134.9A CN201610577134A CN106142934A CN 106142934 A CN106142934 A CN 106142934A CN 201610577134 A CN201610577134 A CN 201610577134A CN 106142934 A CN106142934 A CN 106142934A
- Authority
- CN
- China
- Prior art keywords
- plate
- base
- bisector
- teaching aid
- perpendicular plate
- 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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/001—Mathematical drawing instruments
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- Electrically Operated Instructional Devices (AREA)
Abstract
The present invention relates to a kind of teaching aid drawing angular bisector, belong to teaching aid technical field, including the first base, the second base peace distributor plate, described first base, the second peace distributor plate end, base are fixed by movable axis；Being vertically installed with the first perpendicular plate on described first base, described second base is vertically installed with the second perpendicular plate, there is intersection point in described bisector plate, the first perpendicular plate and the second perpendicular plate three, offers the bar shaped setting-out hole run through in the middle part of described bisector plate.This technical scheme utilizes congruent triangles principle, the equivalent of triangle enclosed according to the first base, the first perpendicular plate peace distributor plate in the second base, the triangle that encloses of the second perpendicular plate peace distributor plate, now the position of bisector plate is the angular bisector position at known angle, the drafting of angular bisector can be carried out finally by bar shaped setting-out hole, there is useful technique effect and significant practical value.
Description
Technical field
The present invention relates to a kind of teaching aid drawing angular bisector, belong to teaching aid technical field.
Background technology
The boost line of angular bisector, during several teaching, often to be done, i.e. with one directly in known angle by middle school mathematics
The known angle of bundle of lines is divided into two equal angles of angle from centre, draws angular bisector and generally just can make with construction with ruler and compasses, or
By means of protractor and ruler, this method needs to use two kinds of drawing tools, and teacher uses one hand to be difficult in presentation process
Two instruments are fixed simultaneously, uses inconvenience.
Summary of the invention
The perpendicular bisector existed to make up prior art draws the problem of inconvenience, the invention provides a kind of picture angular bisector
Teaching aid, concrete technical scheme is as follows:
A kind of teaching aid drawing angular bisector, including the first base, the second base peace distributor plate, described first base, second end
Peace distributor plate end, limit is fixed by movable axis；The first perpendicular plate, described second end it is vertically installed with on described first base
Being vertically installed with the second perpendicular plate on limit, there is intersection point in described bisector plate, the first perpendicular plate and the second perpendicular plate three, described
The bar shaped setting-out hole run through is offered in the middle part of bisector plate.
As the improvement of technique scheme, described first base offers the first chute, described first perpendicular plate end
Portion is provided with can be along the first slide block of the first slide；The second chute is offered on described second base, described second vertical
Plate end is provided with can be along the second slide block of the second slide.
As the improvement of technique scheme, described bisector plate uses ferrous material to make, on described bar shaped setting-out hole
Away from being provided with the 3rd slide block on one end of movable axis, described 3rd slide block is connected with bundling belt and Magnet in turn.
As the improvement of technique scheme, described first base and the second base still side on bisector plate is equal
It is provided with scale.
The teaching aid of technique scheme in use, first by the first base and the second base respectively with snap to known angle
Article two, on limit, then the distance of the first perpendicular plate to movable axis is adjusted to equal with the distance of the second perpendicular plate to movable axis,
Recycling congruent triangles principle, the equivalent of triangle enclosed according to the first base, the first perpendicular plate peace distributor plate is in the
The triangle that two bases, the second perpendicular plate peace distributor plate enclose, now the position of bisector plate be known angle angle put down
Separated time position, can carry out the drafting of angular bisector finally by bar shaped setting-out hole, it is possible to when demonstration, one hand is fixed behaviour
Making, more existing instrument draws speed faster, has saved time in classroom, has useful technique effect and the most practical valency
Value.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of teaching aid drawing angular bisector of the present invention.
Detailed description of the invention
As it is shown in figure 1, the invention provides a kind of teaching aid drawing angular bisector, including the 10, second base 20, the first base
Peace distributor plate 50, peace distributor plate 50 end, the 10, second base 20, described first base is fixed by movable axis 12；Described
It is vertically installed with the first perpendicular plate 30 on one base 10, described second base 20 is vertically installed with the second perpendicular plate 40, described
There is intersection point in bisector plate the 50, first perpendicular plate 30 and the second perpendicular plate 40 three, offers and pass through in the middle part of described bisector plate 50
The bar shaped setting-out hole 51 worn.
The teaching aid of technique scheme in use, first by the first base 10 and the second base 20 respectively with snap to known
On two limits at angle, then by the distance of the first perpendicular plate 30 to movable axis 12 and the second perpendicular plate 40 to movable axis 12 away from
Equal from being adjusted to, recycle congruent triangles principle, enclose according to first base the 10, first perpendicular plate 30 peace distributor plate 50
The triangle that the equivalent of triangle become encloses in second base the 20, second perpendicular plate 40 peace distributor plate 50, now bisector
The position of plate 50 is the angular bisector position at known angle, can carry out painting of angular bisector finally by bar shaped setting-out hole 51
System.
Further, described first base 10 offering the first chute 11, described first perpendicular plate 30 end is provided with
The first slide block 31 that can slide along the first chute 11；The second chute 21 is offered on described second base 20, described second vertical
Plate 40 end is provided with the second slide block 41 that can slide along the second chute 21, and this preferred version provides a kind of freely slidable
First perpendicular plate 30 and the second slide block 41, thus expand the support to part wide-angle obtuse angle.
Further, described bisector plate 50 uses ferrous material to make, away from activity on described bar shaped setting-out hole 51
Being provided with the 3rd slide block 52 on one end of axle 12, described 3rd slide block 52 is connected with bundling belt 53 and Magnet 54 in turn, this is excellent
Select that conceptual design is a kind of can carry out, to the first perpendicular plate 30 intersected and the second perpendicular plate 40, the slide construction that binding is fixing, make
3rd slide block 52, behind the position determining bisector plate 50, is slided into crossover location by the used time, then bundling belt 53 bundle is pressed in
On first perpendicular plate 30 and the second perpendicular plate 40, bisector plate 50 is carried out solid by Magnet 54 with the adsorptivity of bisector plate 50
Fixed, and can temporarily whole teaching aid be carried out of short duration fixing, facilitate the drafting of bisector.
Further, described first base 10 and the still side on bisector plate 50, the second base 20 are provided with
Scale 60, this preferred version can accurately control the first perpendicular plate 30 and the second perpendicular plate 40 distance to movable axis 12, raising
The degree of accuracy of this teaching aid.
This set teaching aid structure is simple, is convenient for carrying, simple operation, and demonstrating effect is preferable, imparts knowledge to students with this teaching aid, it is possible to drilling
When showing, one hand is fixed operation, and more existing instrument draws speed faster, has saved time in classroom, and beneficial effect is notable.
Above embodiments of the invention are described in detail, but described content have been only presently preferred embodiments of the present invention,
Being not to be regarded as the practical range for limiting the present invention, all equalizations made according to the scope of the invention change and improvement etc., all should
Within still belonging to covering scope of the present invention.
Claims (4)
1. the teaching aid drawing angular bisector, it is characterised in that include the first base (10), the second base (20) peace distributor plate
(50), described first base (10), the second base (20) peace distributor plate (50) end are fixed by movable axis (12)；Described
It is vertically installed with the first perpendicular plate (30) on one base (10), described second base (20) is vertically installed with the second perpendicular plate
(40), there is intersection point, described bisector plate in described bisector plate (50), the first perpendicular plate (30) and the second perpendicular plate (40) three
(50) middle part offers the bar shaped setting-out hole (51) run through.
A kind of teaching aid drawing angular bisector the most as claimed in claim 1, it is characterised in that offer on described first base (10)
The first chute (11), described first perpendicular plate (30) end is had to be provided with the first slide block that can slide along the first chute (11)
(31)；Offering the second chute (21) on described second base (20), described second perpendicular plate (40) end is provided with can be along
The second slide block (41) that two chutes (21) slide.
A kind of teaching aid drawing angular bisector the most as claimed in claim 2, it is characterised in that described bisector plate (50) uses ferrum
Material is made, and described bar shaped setting-out hole (51) is provided with the 3rd slide block (52) on one end away from movable axis (12), described
Bundling belt (53) and Magnet (54) it is connected with in turn on 3rd slide block (52).
A kind of teaching aid drawing angular bisector the most as claimed in claim 3, it is characterised in that described first base (10) and second
The still side on bisector plate (50), base (20) is provided with scale (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577134.9A CN106142934A (en) | 2016-07-21 | 2016-07-21 | A kind of teaching aid drawing angular bisector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577134.9A CN106142934A (en) | 2016-07-21 | 2016-07-21 | A kind of teaching aid drawing angular bisector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106142934A true CN106142934A (en) | 2016-11-23 |
Family
ID=58060576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610577134.9A Pending CN106142934A (en) | 2016-07-21 | 2016-07-21 | A kind of teaching aid drawing angular bisector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106142934A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935106A (en) * | 2017-05-08 | 2017-07-07 | 郑州航空工业管理学院 | A kind of mathematics teaching aid |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030121164A1 (en) * | 2001-12-31 | 2003-07-03 | Kraus Andrew Patrick | Method and apparatus for locating the center of a circle |
| CN201151302Y (en) * | 2008-02-03 | 2008-11-19 | 王艳 | Angular bisector plotting device |
| CN201592606U (en) * | 2010-02-09 | 2010-09-29 | 裴中军 | Angle bisector drawer |
| CN102407719A (en) * | 2010-12-08 | 2012-04-11 | 昆山市瑞捷精密模具有限公司 | Angle bisection device |
| CN202782373U (en) * | 2012-09-24 | 2013-03-13 | 无锡商业职业技术学院 | Portable angular bisector drawing instrument |
| CN203631016U (en) * | 2013-12-11 | 2014-06-04 | 伍军 | Multifunctional demonstration device for geometric construction |
| CN203844481U (en) * | 2014-04-15 | 2014-09-24 | 胡广新 | Line segment and angle bisection instrument |
-
2016
- 2016-07-21 CN CN201610577134.9A patent/CN106142934A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030121164A1 (en) * | 2001-12-31 | 2003-07-03 | Kraus Andrew Patrick | Method and apparatus for locating the center of a circle |
| CN201151302Y (en) * | 2008-02-03 | 2008-11-19 | 王艳 | Angular bisector plotting device |
| CN201592606U (en) * | 2010-02-09 | 2010-09-29 | 裴中军 | Angle bisector drawer |
| CN102407719A (en) * | 2010-12-08 | 2012-04-11 | 昆山市瑞捷精密模具有限公司 | Angle bisection device |
| CN202782373U (en) * | 2012-09-24 | 2013-03-13 | 无锡商业职业技术学院 | Portable angular bisector drawing instrument |
| CN203631016U (en) * | 2013-12-11 | 2014-06-04 | 伍军 | Multifunctional demonstration device for geometric construction |
| CN203844481U (en) * | 2014-04-15 | 2014-09-24 | 胡广新 | Line segment and angle bisection instrument |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935106A (en) * | 2017-05-08 | 2017-07-07 | 郑州航空工业管理学院 | A kind of mathematics teaching aid |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161123 |