CN201261332Y - Compasses for plane and sphere - Google Patents
Compasses for plane and sphere Download PDFInfo
- Publication number
- CN201261332Y CN201261332Y CNU2008200500820U CN200820050082U CN201261332Y CN 201261332 Y CN201261332 Y CN 201261332Y CN U2008200500820 U CNU2008200500820 U CN U2008200500820U CN 200820050082 U CN200820050082 U CN 200820050082U CN 201261332 Y CN201261332 Y CN 201261332Y
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- CN
- China
- Prior art keywords
- circle
- pencil
- radius
- compasses
- horizontal
- 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 provides school mathematical teaching aids and particularly relates to a pair of compasses for plane surfaces and spheres, which belongs to teaching aids manufacturing technology. The compasses comprise a center location pillar, an elastic snap spring, a horizontal plotting scale, a transparent elastic snap spring, a vertical pencil, a three-way elastic snap spring and a horizontal pencil. A circle can be drawn on a plane surface or a sphere by the compasses, and the radius of the drawn circle can be read out on the horizontal plotting scale, therefore, the compasses are convenient and can not damage sheets and blackboard. The compasses comprise the center location pillar (1), a vacuum chuck (10), the elastic snap spring (7) and other components, and are characterized in that the horizontal plotting scale (2) is vertically connected to the center location pillar (1), the vacuum chuck (10) and the elastic snap spring (7); the horizontal plotting scale (2) is vertically connected with the vertical pencil (3) via the transparent elastic snap spring (6); and the vertical pencil (3) is horizontally connected with the horizontal pencil (4) via the three-way elastic snap spring (5).
Description
Technical field
The utility model is a kind of compasses, and particularly a kind of plane and the spheroid compasses that can directly read radius belong to the teaching appliance manufacturing technology.
Technical background
Present most compasses all can not directly be read radius of a circle, and do not have the function at the spheroid upper drawing circle.Also have considerable compasses smooth inadequately when drawing circle, also be easy to destroy paper or blackboard at circle centre position.In order to overcome the deficiency of prior art, the special the utility model of developing.
The utility model content
The purpose of this utility model provides a kind of plane and spheroid compasses.It is made up of center of circle reference column, elastic circlip, horizontal scale chi, transparent elastic jump ring, vertical pencil, threeway elastic circlip and horizontal pencil etc., it can draw in the plane flexibly glibly and spheroid on circle, and can directly read drawn radius of a circle, can draw like a cork by given radius and specify the circle of size, in whole picture circle journey, can never destroy paper or blackboard at circle centre position.Its modern design, compact conformation, easy to use.The utility model is achieved in that it comprises center of circle reference column, vacuum cup, elastic circlip, radius of circle tuning drive gear and spheroid radius of circle tuning drive gear, it is characterized in that the vertical horizontal scale chi that connects on the elastic circlip of center of circle reference column, vertically connecting horizontal pencil by threeway elastic circlip level on the pencil.Its first design feature is: plane and spheroid compasses, it comprises center of circle reference column, vacuum cup, elastic circlip, radius of circle tuning drive gear and spheroid radius of circle tuning drive gear, it is characterized in that the vertical horizontal scale chi that connects on the elastic circlip of center of circle reference column, vertically connecting horizontal pencil by threeway elastic circlip level on the pencil.Its second design feature is: connect vacuum cup in center of circle reference column portion, the radius of circle tuning drive gear is housed, is connected with cross break shape spheroid radius of circle tuning drive gear in the side at transparent elastic jump ring panel middle part; Described radius of circle tuning drive gear and vertical pencil are point-blank; Described cross break shape spheroid radius of circle tuning drive gear is over against the summit of horizontal pencil.Advantage of the present utility model in sum is as follows: (one) is novel in design, compact conformation; (2) can draw in the plane flexibly glibly and spheroid on circle, and can directly read drawn radius of a circle, can draw like a cork by given radius and specify the circle of size, can not destroy paper or blackboard at circle centre position; (3) production cost is low.
Description of drawings
Further understand structure of the present utility model according to the description of drawings and the specific embodiment below.
Accompanying drawing 1 is a front view of the present utility model;
Accompanying drawing 2 is drawn the schematic diagram of flat circle for the utility model;
Accompanying drawing 3 is drawn the schematic diagram of spheroid circle for the utility model.
In the accompanying drawing: 1, center of circle reference column, 2, the horizontal scale chi, 3, vertical pencil, 4, horizontal pencil, 5, the threeway elastic circlip, 6, the transparent elastic jump ring, 7, elastic circlip, 8, the radius of circle tuning drive gear, 9, spheroid radius of circle tuning drive gear, 10, vacuum cup.
The specific embodiment
1 make each parts of the utility model and be assembled into and be plane and spheroid compasses with reference to the accompanying drawings.
From accompanying drawing 2 as can be seen: draw bowlder in the plane, vacuum cup 10 is fixed in the plane, regulate elastic circlip 7, the vertical pencil 3 that makes the picture flat circle and vacuum cup 10 be (the vertical pencil 3 that also can move up and down the picture flat circle by the transparent elastic jump ring 6 of band graduation mark makes it in the same plane with vacuum cup 10) at grade, the transparent elastic jump ring 6 of move left and right band graduation mark then, make the needed radius scale of radius of circle tuning drive gear 8 alignment, then stir horizontal scale chi 2 it is rotated a circle around center of circle reference column 1, just draw like a cork and specify the flat circle of size.
From accompanying drawing 3 as can be seen: when the spheroid upper drawing circle, vacuum cup 10 is fixed on the spheroid, regulate elastic circlip 7, the nib of the horizontal pencil 4 of picture spheroid circle is alignd (also can aliging with spheroid radius of circle tuning drive gear 9) by the nib of regulating the round horizontal pencil 4 of picture spheroid with spheroid radius of circle tuning drive gear 9, the transparent elastic jump ring 6 of move left and right band graduation mark, make the needed radius scale of spheroid radius of circle tuning drive gear 9 alignment, moving up and down the round pencil 4 of picture spheroid by the transparent elastic jump ring 6 of being with graduation mark then makes it to keep in touch with spheroid, then stir horizontal scale chi 2 it is rotated a circle around center of circle reference column 1, the spheroid circle that just draws like a cork and specify size.
Claims (2)
1, plane and spheroid compasses, comprise center of circle reference column (1), vacuum cup (10), elastic circlip (7), radius of circle tuning drive gear (8) and spheroid radius of circle tuning drive gear (9), it is characterized in that going up the vertical horizontal scale chi (2) that connects at the elastic circlip (7) of center of circle reference column (1), vertically connect vertical pencil (3) at horizontal scale chi (2) by transparent elastic jump ring (6), upward connect horizontal pencil (4) by threeway elastic circlip (5) level at vertical pencil (3).
2, plane according to claim 1 and spheroid compasses, it is characterized in that connecting vacuum cup (10), radius of circle tuning drive gear (8) is housed, is connected with cross break shape spheroid radius of circle tuning drive gear (9) in the side at transparent elastic jump ring (6) panel middle part in center of circle reference column (1) bottom; Described radius of circle tuning drive gear (8) and vertical pencil (3) are point-blank; Described cross break shape spheroid radius of circle tuning drive gear (9) is over against the summit of horizontal pencil (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200500820U CN201261332Y (en) | 2008-06-28 | 2008-06-28 | Compasses for plane and sphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200500820U CN201261332Y (en) | 2008-06-28 | 2008-06-28 | Compasses for plane and sphere |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201261332Y true CN201261332Y (en) | 2009-06-24 |
Family
ID=40807800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200500820U Expired - Fee Related CN201261332Y (en) | 2008-06-28 | 2008-06-28 | Compasses for plane and sphere |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201261332Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264597A (en) * | 2013-06-01 | 2013-08-28 | 南昌大学 | Compasses convenient to use |
| CN112556550A (en) * | 2020-10-23 | 2021-03-26 | 沪东中华造船(集团)有限公司 | Concentricity detection method in ship building process |
-
2008
- 2008-06-28 CN CNU2008200500820U patent/CN201261332Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264597A (en) * | 2013-06-01 | 2013-08-28 | 南昌大学 | Compasses convenient to use |
| CN112556550A (en) * | 2020-10-23 | 2021-03-26 | 沪东中华造船(集团)有限公司 | Concentricity detection method in ship building process |
| CN112556550B (en) * | 2020-10-23 | 2022-08-05 | 沪东中华造船(集团)有限公司 | Concentricity detection method in ship building process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090624 Termination date: 20110628 |