CN203920138U - Can demonstrate the compasses of picture radius of circle - Google Patents
Can demonstrate the compasses of picture radius of circle Download PDFInfo
- Publication number
- CN203920138U CN203920138U CN201420333496.XU CN201420333496U CN203920138U CN 203920138 U CN203920138 U CN 203920138U CN 201420333496 U CN201420333496 U CN 201420333496U CN 203920138 U CN203920138 U CN 203920138U
- Authority
- CN
- China
- Prior art keywords
- compasses
- tape measure
- paintbrush
- circle
- positioning support
- 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
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Abstract
The utility model relates to a kind of compasses that demonstrate picture radius of circle, and these compasses comprise tape measure and the tape measure wheel being arranged on locating part, and are arranged on the moving runner on positioning support leg, on paintbrush supporting leg, are provided with connector.In these compasses is to control it in positioning support leg and paintbrush supporting leg length between the two by tape measure wheel, so these compasses add tape measure can not increase the volume of these compasses; Because tape measure is soft and the light parts of quality, in the process that drawn radius of circle is set with it, to the spacing producing between positioning support leg and paintbrush supporting leg, can not have any impact simultaneously.
Description
Technical field
the utility model relates to a kind of compasses that demonstrate picture radius of circle, especially relate to a kind of by positioning support leg and paintbrush supporting leg, and compasses that form with the locating part of fixed axis.
Background technology
compasses of the prior art adopt said structure conventionally, and locating part wherein adopts hinged joint in addition.Compasses are the indispensable instruments of drawing, and in painting process, first with positioning support leg, are fixed on home position, then paintbrush supporting leg are opened, then rotate paintbrush supporting leg and can draw circle.Owing to utilizing, compasses drawing diameter of a circle ratio is impossible identical, cause before drawing, must first utilize lattice chi by the spacing measuring between positioning support leg and paintbrush supporting leg, and then draw round, and need the process of picture radius of circle more loaded down with trivial details with the measurement of lattice chi, so the compasses of said structure need further to improve.
for this reason, the name of No. 102463800A bulletin of Chinese patent is called " a kind of compasses " proposition a solution.These compasses are provided with an adjustable radius and in central region, are provided with the rule of chute between two gauge bars, wherein, on a gauge bar, be provided with for connecting the hinge of this rule one end, on another gauge bar, be provided with the adjusting bolt that can insert in rule chute.This kind of compasses in use, by the spacing on rule between adjustable two gauge bars of degree of tightness of adjusting bolt.Although this kind of compasses can be according to the needed radius of drawing circle, what adopt due to rule is panel-like member, and panel-like member has certain rigidity, so rule combines with compasses can increase volume, and the cost of manufacture of rule is also relatively high; Simultaneously because the quality of rule is relatively large, if draw the bowlder of minor radius with these compasses, rule laterally extends adjusting bolt place gauge bar one side, and the length of extending is longer, the moment that causes end that rule extends to have under the effect of attraction to take hinge to rotate as the strong point, thus easily make two distances between gauge bar dwindle, and then affect picture and justify needed radius, so also there is some problems in the length that these compasses adopt rule to set radius of circle.
Summary of the invention
the purpose of this utility model is to provide a kind of mode of utilizing tape to calculate drawn radius of circle and solves the large compasses with changing the demonstrated picture radius of circle of the problems such as circular diameter of volume.
the compasses of the demonstrated picture radius of circle that the utility model proposes comprise positioning support leg and paintbrush supporting leg, and locating part, on locating part, be provided with for limiting the fixed axis of positioning support leg and paintbrush supporting leg, these compasses also comprise tape measure and are arranged on the tape measure wheel on locating part, and be arranged on the moving runner on positioning support leg, on paintbrush supporting leg, be provided with connector.
described locating part consists of plate.Described connector consists of hook-like part, and this hook-like part parallels with moving runner.
the compasses of the demonstrated picture radius of circle that the utility model proposes adopt tape measure that drawn radius of a circle is set, and tape measure is to control it in positioning support leg and paintbrush supporting leg length between the two by tape measure wheel, so these compasses add tape measure can not increase the volume of these compasses; Because tape measure is soft and the light parts of quality, in the process that drawn radius of circle is set with it, to the spacing producing between positioning support leg and paintbrush supporting leg, can not have any impact simultaneously.
accompanying drawing explanation:
fig. 1 is the surface structure schematic diagram of an embodiment of compasses of the demonstrated picture radius of circle that proposes of the utility model.
the specific embodiment:
referring to Fig. 1, this figure provides the overall appearance structure of an embodiment of compasses of the demonstrated picture radius of circle that the utility model proposes.These compasses comprise positioning support leg 5 and paintbrush supporting leg 6, and the locating part 1 being formed by plate, two fixed axis 7 and 8 that extend ejecting plate face are installed on this locating part 1, positioning support leg 5 upper ends are wherein provided with the groove that allows fixed axis 7 to insert, and paintbrush supporting leg 6 upper ends are also provided with the groove that allows fixed axis 8 to insert; Tape measure wheel 2 is also installed on locating part 1, a moving runner 4 is installed on positioning support leg 5, on this moving runner 4, is provided with radial groove (not providing in figure), on paintbrush supporting leg 6, be provided with connector 9, connector 9 can consist of hook-like part, and this hook-like part parallels with moving runner 4.
the surface of tape measure 3 is provided with scale (not providing in figure), and one end of this tape measure 3 is fixed on tape measure wheel 2, and the other end is connected with connector 9, and tape measure 3 is connected with connector 9 by moving runner 4.Tape measure wheel 2 wherein can be crispaturaed tape measure 3 within it, and in the process of positioning support leg 5 and 6 expansion of paintbrush supporting leg, tape measure 3 can extend thereupon.
Claims (3)
1. can demonstrate the compasses of picture radius of circle, these compasses comprise positioning support leg and paintbrush supporting leg, and locating part, on locating part, be provided with for limiting the fixed axis of positioning support leg and paintbrush supporting leg, it is characterized in that: these compasses also comprise tape measure and are arranged on the tape measure wheel on locating part, and be arranged on the moving runner on positioning support leg, on paintbrush supporting leg, be provided with connector.
2. compasses according to claim 1, is characterized in that: described locating part consists of plate.
3. compasses according to claim 1, it is characterized in that: described connector consists of hook-like part, and this hook-like part parallel with moving runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420333496.XU CN203920138U (en) | 2014-06-23 | 2014-06-23 | Can demonstrate the compasses of picture radius of circle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420333496.XU CN203920138U (en) | 2014-06-23 | 2014-06-23 | Can demonstrate the compasses of picture radius of circle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203920138U true CN203920138U (en) | 2014-11-05 |
Family
ID=51816006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420333496.XU Expired - Fee Related CN203920138U (en) | 2014-06-23 | 2014-06-23 | Can demonstrate the compasses of picture radius of circle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203920138U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106114013A (en) * | 2016-08-31 | 2016-11-16 | 甄泓忠 | The Geometric figure drawing compasses that a kind of students in mathematics teaching is special |
-
2014
- 2014-06-23 CN CN201420333496.XU patent/CN203920138U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106114013A (en) * | 2016-08-31 | 2016-11-16 | 甄泓忠 | The Geometric figure drawing compasses that a kind of students in mathematics teaching is special |
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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: 20141105 Termination date: 20150623 |
|
| EXPY | Termination of patent right or utility model |