CN204142164U - Combined amount angle apparatus - Google Patents
Combined amount angle apparatus Download PDFInfo
- Publication number
- CN204142164U CN204142164U CN201420664199.3U CN201420664199U CN204142164U CN 204142164 U CN204142164 U CN 204142164U CN 201420664199 U CN201420664199 U CN 201420664199U CN 204142164 U CN204142164 U CN 204142164U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- piecemeal
- protractor
- central point
- gage beam
- 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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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
A kind of combined amount angle apparatus, comprise: protractor, protractor comprises the first piecemeal and the second piecemeal, first piecemeal and the second piecemeal are rotationally connected, protractor comprises reference line, central point and angle index, and reference line is arranged at the straight line portion of protractor, and angle index is positioned at the circular arc portion of protractor, central point is positioned at the mid point of reference line, and is arranged on the first piecemeal or the second piecemeal.Gage beam, gage beam comprises first connecting rod and second connecting rod, first connecting rod head end is rotationally connected with central point, tail end is movably set on second connecting rod, second connecting rod is provided with away from the end of first connecting rod the through hole holding chalk, first connecting rod and second connecting rod are arranged with one heart, and the tie point of first connecting rod and central point and through hole are all positioned on the center line of gage beam, and the center line of gage beam is provided with angulation line.Combinations thereof angle measurer structure is simple, and angulation is convenient, achieves angulation simultaneously and draws round function, being easy to carry.
Description
Technical field
The utility model relates to teaching apparatus for mathematics, particularly relates to combined amount angle apparatus.
Background technology
Traditional protractor is provided with reference line, central point and angle index.Time in use, reference line and measured angle limit need be overlapped, the central point of protractor overlaps with the summit of measured angle, reads the angle index reading of another limit corresponding amount hornwork of measured angle.When the length of side for reading angular of measured angle is shorter, through the angle index region of protractor, cannot only have and extended on this limit, just can measure the angle of measured angle relatively accurately, measuring process is loaded down with trivial details time-consuming.And traditional protractor can not be used for picture circle, therefore teaching process often needs carrying amount hornwork and compasses simultaneously, carries very inconvenience.
Utility model content
Based on this, be necessary for the loaded down with trivial details time-consuming problem can not drawing round of traditional protractor problem measuring process, provide a kind of angulation convenient and may be used for the round combined amount angle apparatus of picture.
A kind of combined amount angle apparatus, comprising:
Protractor, protractor comprises the first piecemeal and the second piecemeal, first piecemeal and the second piecemeal are rotationally connected, first piecemeal and the second piecemeal launch horizontal positioned and form semi-circular structure, protractor comprises reference line, central point and angle index, and reference line is arranged at the straight line portion of protractor, and angle index is positioned at the circular arc portion of protractor, central point is positioned at the mid point of reference line, and is arranged on the first piecemeal or the second piecemeal.
Gage beam, gage beam comprises first connecting rod and second connecting rod, first connecting rod head end is rotationally connected with central point, tail end is movably set on second connecting rod, second connecting rod is provided with away from the end of first connecting rod the through hole holding chalk, first connecting rod and second connecting rod are arranged with one heart, and the tie point of first connecting rod and central point and through hole are all positioned on the center line of gage beam, and the center line of gage beam is provided with angulation line.
Further, the quantity of through hole is multiple.
Further, the bottom surface of aperture from the surface of second connecting rod to second connecting rod of through hole reduces gradually.
Further, the rotation axis of the first piecemeal and the second piecemeal is perpendicular to reference line.
Further, reference line is provided with length scale.
Combinations thereof angle measurer, when taking measurement of an angle, if the both sides of measured angle are all longer, can directly use protractor survey measurements.When measured angle wherein on one side short, by the reference line of protractor with measured angle while overlap, the central point of protractor overlaps with the summit of measured angle, overlapped with measured angle another side by the angulation line of gage beam, namely read volume linea angulata obtains the angle of measured angle through the reading that angle index is corresponding simultaneously.Without the need to extending the comparatively minor face of measured angle, simple to operate, accuracy of reading.At picture bowlder, fixed by protractor, be loaded in through hole by chalk and contact with blackboard, gage beam is centrally put and is rotated a circle, and can draw a regular circle, adjusts the relative position of first connecting rod and second connecting rod, can draw the circle of different size.Combinations thereof angle measurer structure is simple, and angulation is convenient, achieves angulation simultaneously and draws round function, and when carrying, can be accommodated in first connecting rod by second connecting rod, the first piecemeal of protractor or the upset of the second piecemeal are accommodated in another piecemeal back side, save space, be easy to carry.
Accompanying drawing explanation
Fig. 1 is the structural representation of the combined amount angle apparatus of an embodiment;
Fig. 2 is the structural representation of the second connecting rod of an embodiment.
Description of reference numerals: 100, protractor; 101, the first piecemeal; 102, the second piecemeal; 110, reference line; 120, central point; 130, angle index; 200, gage beam; 210, first connecting rod; 220, second connecting rod; 230, through hole; 240, angulation line.
Embodiment
A kind of combined amount angle apparatus, as shown in Figure 1, comprise: protractor 100, protractor 100 comprises the first piecemeal 101 and the second piecemeal 102, first piecemeal 101 and the second piecemeal 102 are rotationally connected, first piecemeal 101 and the second piecemeal 102 launch horizontal positioned and form semi-circular structure, protractor 100 comprises reference line 110, central point 120 and angle index 130, reference line 110 is arranged at the straight line portion of protractor 100, angle index 130 is positioned at the circular arc portion of protractor 100, central point 120 is positioned at the mid point of reference line 110, and be arranged on the first piecemeal 101 or the second piecemeal 102.Gage beam 200, gage beam 200 comprises first connecting rod 210 and second connecting rod 220, first connecting rod 210 head end is rotationally connected with central point 120, tail end is movably set on second connecting rod 220, second connecting rod 220 is provided with away from the end of first connecting rod 210 through hole 230 holding chalk, first connecting rod 210 and second connecting rod 220 are arranged with one heart, and tie point and the through hole 230 of first connecting rod 210 and central point 120 are all positioned on the center line of gage beam 200, and the center line of gage beam 200 is provided with angulation line 240.
Combined amount angle apparatus is preferably and adopts transparent plastic to obtain, so that by the reference line 110 of protractor 100 with measured angle while overlap, the central point 120 of protractor 100 overlaps with the summit of measured angle, is overlapped by the angulation line 240 of gage beam 200 with measured angle another side simultaneously.Because gage beam 200 itself has certain width, if directly take measurement of an angle with it, can cause read untrue, set amount linea angulata 240 can overlap with the length of side of measured angle preferably, reduces error.Be appreciated that slotted line can for being engraved on the straight line on gage beam 200, the narrower groove also can offered for centrally line, all can realize the function overlapped with the length of side of measured angle.First piecemeal 101 is connected by articulated manner with the second piecemeal 102.Central point 120 is arranged on the first piecemeal 101 or the second piecemeal 102, instead of the junction of the first piecemeal 101 and the second piecemeal 102 can ensure that central point 120 position is fixed, and improves the accuracy measured.
First connecting rod 210 is flexibly connected with second connecting rod 220, the length of adjustment second connecting rod 220 in first connecting rod 210, the i.e. distance of adjustable through hole 230 distance center point 120, i.e. adjustable radius of a circle.And when carrying, second connecting rod 220 can be accommodated in first connecting rod 210, save space, the first piecemeal 101 of protractor 100 or the upset of the second piecemeal 102 are accommodated in another piecemeal back side, save space, are easy to carry.
Combinations thereof angle measurer, when taking measurement of an angle, if the both sides of measured angle are all longer, directly can use protractor 100 survey measurements.When measured angle wherein on one side short, by the reference line 110 of protractor 100 with measured angle while overlap, the central point 120 of protractor 100 overlaps with the summit of measured angle, overlapped with measured angle another side by the angulation line 240 of gage beam 200, namely read volume linea angulata 240 obtains the angle of measured angle through the reading of angle index 130 correspondence simultaneously.Without the need to extending the comparatively minor face of measured angle, simple to operate, accuracy of reading.At picture bowlder, protractor 100 is fixed, chalk is loaded in through hole 230 and contacts with blackboard, gage beam 200 centrally 120 rotates a circle, can draw a regular circle, the relative position of adjustment first connecting rod 210 and second connecting rod 220, can draw the circle of different size.Combinations thereof angle measurer structure is simple, and angulation is convenient, achieves angulation simultaneously and draws round function, being easy to carry.
Further, the quantity of through hole 230 is multiple.The distance of through hole 230 distance center point 120 is radius of a circle, arranges multiple through hole 230, and the circle of different radii not etc., also can not drawn in the position of through hole 230 distance center point 120.
Further, as shown in Figure 2, the bottom surface of aperture from the surface of second connecting rod 220 to second connecting rod 220 of through hole 230 reduces gradually.Second connecting rod 220 is bottom surface apart from the face of the close together of blackboard, and opposing face is surface.Chalk is generally frustum cone structure, and the aperture of through hole 230 reduces, and can form good cooperation with chalk.
Further, as shown in Figure 1, the rotation axis of the first piecemeal 101 and the second piecemeal 102 is perpendicular to reference line 110.Compare rotation axis to be obliquely installed, this design can ensure the first piecemeal 101 and the second piecemeal 102 folding after combined amount angle apparatus more regular, be convenient for carrying.
Further, reference line 110 is provided with length scale.Length scale can make protractor 100 for measuring the length of certain length straight line.
Claims (5)
1. a combined amount angle apparatus, is characterized in that, comprising:
Protractor, described protractor comprises the first piecemeal and the second piecemeal, described first piecemeal and described second piecemeal are rotationally connected, described first piecemeal and described second piecemeal launch horizontal positioned and form semi-circular structure, described protractor comprises reference line, central point and angle index, described reference line is arranged at the straight line portion of described protractor, described angle index is positioned at the circular arc portion of described protractor, described central point is positioned at the mid point of described reference line, and is arranged on described first piecemeal or described second piecemeal;
Gage beam, described gage beam comprises first connecting rod and second connecting rod, described first connecting rod head end is rotationally connected with described central point, tail end is movably set on described second connecting rod, described second connecting rod is provided with away from the end of described first connecting rod the through hole holding chalk, described first connecting rod and described second connecting rod are arranged with one heart, and the tie point of described first connecting rod and described central point and described through hole are all positioned on the center line of described gage beam, and the center line of described gage beam is provided with angulation line.
2. combined amount angle apparatus according to claim 1, is characterized in that, the quantity of described through hole is multiple.
3. combined amount angle apparatus according to claim 1, is characterized in that, the bottom surface from the surface of described second connecting rod to described second connecting rod, the aperture of described through hole reduces gradually.
4. combined amount angle apparatus according to claim 1, is characterized in that, the rotation axis of described first piecemeal and described second piecemeal is perpendicular to described reference line.
5. the combined amount angle apparatus according to any one of claim 1 ~ 4, is characterized in that, described reference line is provided with length scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664199.3U CN204142164U (en) | 2014-11-10 | 2014-11-10 | Combined amount angle apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664199.3U CN204142164U (en) | 2014-11-10 | 2014-11-10 | Combined amount angle apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204142164U true CN204142164U (en) | 2015-02-04 |
Family
ID=52418845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420664199.3U Expired - Fee Related CN204142164U (en) | 2014-11-10 | 2014-11-10 | Combined amount angle apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204142164U (en) |
-
2014
- 2014-11-10 CN CN201420664199.3U patent/CN204142164U/en not_active Expired - Fee Related
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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: 20150204 Termination date: 20151110 |
|
| EXPY | Termination of patent right or utility model |