CN201240178Y - Ellipsograph - Google Patents
Ellipsograph Download PDFInfo
- Publication number
- CN201240178Y CN201240178Y CNU2008200677515U CN200820067751U CN201240178Y CN 201240178 Y CN201240178 Y CN 201240178Y CN U2008200677515 U CNU2008200677515 U CN U2008200677515U CN 200820067751 U CN200820067751 U CN 200820067751U CN 201240178 Y CN201240178 Y CN 201240178Y
- Authority
- CN
- China
- Prior art keywords
- support
- knob
- pencil
- handle
- fixed
- 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 discloses a pair of oval compasses, which comprises a support and a handle; the support is connected with the handle through a rotary shaft; a fixed support is arranged on the rotary shaft; a pencil is arranged at the bottom end of the fixed support; a fixed pulley is arranged between the pencil and the fixed support; a wire duct is formed on the fixed pulley; a conical needle is arranged at the bottom end of the support; a needle hole is formed on the conical needle; a knob is arranged at the middle end of the support; a string is arranged on the knob; and the string is connected with the needle hole. The pair of oval compasses is characterized by simple and convenient steps for drawing an oval.
Description
Technical field
The utility model relates to a kind of compasses, especially a kind of ellipsograph.
Background technology
The compasses that use can only be drawn circle at present, need by auxiliary ruler when drawing ellipse, and need a lot of steps just can be drawn as, and are very inconvenient.
Summary of the invention
The purpose of this utility model will provide the oval step of a kind of picture ellipsograph simply and easily exactly.
The purpose of this utility model is achieved in that a kind of ellipsograph, comprise: support and handle, support is connected with handle by rotating shaft, and rotating shaft is provided with fixed rack, the fixed rack bottom is provided with pencil, be provided with fixed pulley between pencil and the fixed rack, fixed pulley is provided with wire casing, and the support bottom is provided with awl, awl is provided with pin hole, the support middle-end is provided with knob, and knob is provided with cord, and cord is connected with pin hole.
The utility model has been realized drawing oval one step forming owing to adopt said structure, and step is purpose simply and easily
Description of drawings
Be described further below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Structure of the present utility model comprises: a kind of ellipsograph, comprise: support 1 and handle 2, support 1 is connected with handle 2 by rotating shaft 3, and rotating shaft 3 is provided with fixed rack 4, fixed rack 4 bottoms are provided with pencil 5, be provided with fixed pulley 6 between pencil 5 and the fixed rack 4, fixed pulley 6 is provided with wire casing 7, and support 1 bottom is provided with awl 8, awl 8 is provided with pin hole, support 1 middle-end is provided with knob 9, and knob 9 is provided with cord 10, and cord 10 is connected with pin hole.
Adjusting knob 9 is the length of drawn oval size with the length adjustment of cord 10 when making ellipse, fixes awl 8 cord 10 is embedded in the wire casings 7, utilizes fixed pulley 6, changes one of them support 1, and required ellipse just can draw.
Claims (1)
1, a kind of ellipsograph, comprise: support (1) and handle (2), it is characterized in that: support (1) is connected with handle (2) by rotating shaft (3), rotating shaft (3) is provided with fixed rack (4), fixed rack (4) bottom is provided with pencil (5), be provided with fixed pulley (6) between pencil (5) and the fixed rack (4), fixed pulley (6) is provided with wire casing (7), support (1) bottom is provided with awl (8), awl (8) is provided with pin hole, support (1) middle-end is provided with knob (9), and knob (9) is provided with cord (10), and cord (10) is connected with pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200677515U CN201240178Y (en) | 2008-06-13 | 2008-06-13 | Ellipsograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200677515U CN201240178Y (en) | 2008-06-13 | 2008-06-13 | Ellipsograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201240178Y true CN201240178Y (en) | 2009-05-20 |
Family
ID=40713467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200677515U Expired - Fee Related CN201240178Y (en) | 2008-06-13 | 2008-06-13 | Ellipsograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201240178Y (en) |
-
2008
- 2008-06-13 CN CNU2008200677515U patent/CN201240178Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 |