CN203964798U - A kind of novel angle gauge - Google Patents
A kind of novel angle gauge Download PDFInfo
- Publication number
- CN203964798U CN203964798U CN201420324842.8U CN201420324842U CN203964798U CN 203964798 U CN203964798 U CN 203964798U CN 201420324842 U CN201420324842 U CN 201420324842U CN 203964798 U CN203964798 U CN 203964798U
- Authority
- CN
- China
- Prior art keywords
- angle
- semicircle
- circle
- protractor
- slide block
- 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)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model is applicable to measuring technique and stationery teaching field, has carried and a kind of novel protractor.Described novel angle gauge is half ring-like hollow sheeting piece, hollow space is a standard semicircle, on the inward flange of semi-ring, portray angle mark, middle part or outward flange at semi-ring arrange sliding tray or slide rail by semicircle, wherein install the slide block that can be free to slide additional, open a pore at the circle centre position of semicircle, one end is the semicircle center of circle, open in body surface one end, connects circle center hole and slide block with tough and tensile straight line, promotes slide block and can drive line to rotate and can measure the angle for the treatment of angle measurement around circle center hole.Protractor of the present utility model has the following advantages: the sideline that need not extend again angle in the time that measurement is arbitrarily angled arrives scale position, makes measurement easier, also can draw minor face angle, if on the mathematics teaching aid of application, teaching of use is more directly perceived; Line directly makes reading more accurately, conveniently by the application of index dial and circle center hole; Hollow plate had both been saved material, had also reduced common protractor and had spent inconvenience use to abandon the waste causing because grinding, and can combine with set square stationery easily.
Description
Technical field
The utility model relates to teaching aid and study stationery, relates in particular to a kind of protractor.
Background technology
Protractor be a kind of mathematical education and study in conventional instrument, be mainly used to measure the number of degrees at various angles, or draw certain number of degrees angle come.Standing crop hornwork is generally semicircular transparent plastic sheet or hollow semi-circular plate, angle mark is portrayed at edge at semicircle, on larger protractor, conventionally only select the angle mark of 10 ° of integral multiples to go out the straight line being connected with the center of circle, while measuring random angle, the edge that the one side that must extend angle exceedes semicircle is portrayed angle mark and just can be measured, if less protractor is because plate face is limit and even only selected the angle mark of 30 ° of integral multiples to go out the straight line being connected with the center of circle, not directly perceived in teaching on the one hand, inconvenient, in use reduce on the other hand the accuracy and efficiency of measuring.Also there is at present part novel angle gauge, as pointer type and diagonal form, but owing to having added many accessories, reduced the convenience using.
Summary of the invention
Deficiency while use in order to solve standing crop hornwork, accurately easy protractor more directly perceived when the purpose of this utility model is to provide a kind of use.
The utility model protractor, comprising: half ring-like hollow body (transparent plastic material), sliding tray or slide rail, slide block, circle center hole and connecting line (plastics or metal material).
The purpose of this utility model realizes by following architectural feature, it is characterized in that: body is half ring-like hollow sheeting piece, hollow space is a standard semicircle, on the inward flange of semi-ring, portray angle mark, middle part or outward flange at semi-ring arrange sliding tray or slide rail by semicircle, wherein install the slide block that can be free to slide additional, open a pore at the circle centre position of semicircle, one end is the semicircle center of circle, open in body surface one end, connect circle center hole and slide block with tough and tensile straight line, promote slide block and can drive line to rotate around circle center hole.
Adopt above architectural feature, protractor of the present utility model has the following advantages: the straight line being directly connected with the center of circle makes the sideline that need not extend again angle in the time that measurement is arbitrarily angled arrive scale position, make to measure easier, also can draw the shorter angle in sideline, if on the mathematics teaching aid of application, teaching of use is more directly perceived; Line directly makes reading more accurately, conveniently by the application of index dial and circle center hole; Hollow plate had both been saved face sheet material, had also reduced normal transparent protractor and had spent inconvenience use to abandon the waste causing because grinding, and can combine with set square stationery easily.
Brief description of the drawings
Fig. 1 is the structural representation of the protractor of the utility model embodiment.
Fig. 2 is the schematic cross-section of the protractor circle center hole of the utility model embodiment.
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings, structure of the present utility model and principle of work are comprehensively described.
As shown in Fig. 1, the utility model protractor comprises: protractor 0, measure base 1, circle center hole 2, sliding tray or slide rail 3, slide block 4, line 5.
When measurement, the measurement base 1 of protractor 0 is adjacent to the one side for the treatment of angle measurement, and translation makes circle center hole 2 overlap with the summit at angle, promoting slide block 4 slides along sliding tray or slide rail 3, drive line 5 to rotate around the center of circle, it is overlapped with the another side for the treatment of angle measurement, read line 5 indication angles and be the angle for the treatment of angle measurement.
While drawing angle, draw a line segment along the measurement base 1 of protractor 0, one end of line segment is overlapped with circle center hole 2, promoting slide block 4 slides along sliding tray or slide rail 3, drive line 5 to rotate around the center of circle, make its scale that points to drawn angle, feel free to do a mark under line, amount of movement hornwork connects the center of circle end of this mark and line segment with base.
Finally; be noted that; the utility model can be realized in many different forms; above content is only in order to illustrate a kind of technical scheme of the present utility model; but not restriction to the utility model protection domain; the simple modification that those skilled in the art carries out technical scheme of the present invention or be equal to replacement, does not all depart from essence and the scope of technical solutions of the utility model.
Claims (1)
1. a protractor, it is characterized in that: body is half ring-like hollow sheeting piece, hollow space is a standard semicircle, on the inward flange of semi-ring, portrays angle mark, by semicircle, sliding tray or slide rail is set at middle part or the outward flange of semi-ring, wherein install the slide block that can be free to slide additional, open a pore at the circle centre position of semicircle, one end is the semicircle center of circle, and open in body surface one end, connect circle center hole and slide block with tough and tensile straight line, promote slide block and can drive line to rotate around circle center hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420324842.8U CN203964798U (en) | 2014-06-18 | 2014-06-18 | A kind of novel angle gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420324842.8U CN203964798U (en) | 2014-06-18 | 2014-06-18 | A kind of novel angle gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203964798U true CN203964798U (en) | 2014-11-26 |
Family
ID=51925367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420324842.8U Expired - Fee Related CN203964798U (en) | 2014-06-18 | 2014-06-18 | A kind of novel angle gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203964798U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052502A (en) * | 2016-08-18 | 2016-10-26 | 沈向安 | Novel protractor used for teaching |
| CN106476497A (en) * | 2016-11-10 | 2017-03-08 | 陈征瀚 | A kind of Multifunctional angle scale |
| CN107031243A (en) * | 2017-04-21 | 2017-08-11 | 王有旺 | A kind of multi-function set square for teaching |
-
2014
- 2014-06-18 CN CN201420324842.8U patent/CN203964798U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052502A (en) * | 2016-08-18 | 2016-10-26 | 沈向安 | Novel protractor used for teaching |
| CN106476497A (en) * | 2016-11-10 | 2017-03-08 | 陈征瀚 | A kind of Multifunctional angle scale |
| CN107031243A (en) * | 2017-04-21 | 2017-08-11 | 王有旺 | A kind of multi-function set square for teaching |
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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: 20141126 Termination date: 20160618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |