CN208515250U - Simple ellipse drawing instrument - Google Patents
Simple ellipse drawing instrument Download PDFInfo
- Publication number
- CN208515250U CN208515250U CN201820604043.4U CN201820604043U CN208515250U CN 208515250 U CN208515250 U CN 208515250U CN 201820604043 U CN201820604043 U CN 201820604043U CN 208515250 U CN208515250 U CN 208515250U
- Authority
- CN
- China
- Prior art keywords
- pilot pin
- tape
- telescopic rod
- drawing instrument
- fixed link
- 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
Abstract
The utility model discloses a kind of Simple ellipse drawing instrument, including two compasses supporting legs, compasses supporting leg include fixed link and telescopic rod；Telescopic rod slides in fixed link；Pilot pin fixed block is set on one of compasses supporting leg, the first pilot pin is set on pilot pin fixed block, oval tape is set in the first pilot pin.The utility model uses the compasses supporting leg of stretching structure, while the first pilot pin and the second pilot pin is arranged in compasses supporting leg, and oval tape is arranged in the first pilot pin and the second pilot pin, facilitates the carrying of elliptical drafting and Simple ellipse drawing instrument.
Description
Technical field
The utility model belongs to teaching aid technical field, and in particular to a kind of Simple ellipse drawing instrument.
Background technique
Ellipsograph is a kind of elliptical instrument of picture, and traditional ellipsograph is made of a straight-bar and a bracket.In straight-bar
, there is a pen tip in one end, and there are two adjusting slider on bar (penholder and sliding block are all vertically downward, vertical with straight-bar).In bracket
On, there are two guide grooves to meet at right angle, adjusting slider is individually placed to wherein, to rotate straight-bar, its both ends will be drawn
Ellipse comes.New-type ellipsograph is made of compasses main body, steel needle, cord, and structure is simple, but is needed in teaching use process
The distance of cord is measured repeatedly, it is inconvenient.
Utility model content
To solve the above problems, the utility model provides a kind of Simple ellipse drawing instrument with oval tape.
In order to achieve the above purposes, the technical solution adopted by the utility model is: Simple ellipse drawing instrument, including two compasses branch
Leg, compasses supporting leg include fixed link and telescopic rod；Telescopic rod slides in fixed link；It is fixed to be arranged on one of compasses supporting leg
The first pilot pin is arranged on pilot pin fixed block, oval tape is arranged in the first pilot pin for position needle fixed block.Oval tape is convenient
The measurement of distance；Fixed link and Telescopic rod structure Convenient compasses supporting leg carry, and are convenient for the elliptical drafting of large scale.
Fixed device is arranged in the tail end of telescopic rod；Fixation hole is arranged far from one end of telescopic rod in fixed link；Fixed link setting
Graduation mark；Graduation mark is arranged in telescopic rod.Fixed device is for fixing chalk or fixed pin；Scale is arranged in fixed link and telescopic rod
Line is convenient for measuring the distance of elliptical major and minor axis.
The second pilot pin is arranged by stud connection, the bottom of hinged shaft in fixation hole, and tape is tightened in setting in the second pilot pin
Hole.Tighten tape hole for fixed oval tape.
Oval tape, which passes through, tightens tape hole, and penholder is arranged on oval tape and graduation mark, penholder are located at the first pilot pin
And second between pilot pin, penholder is along oval tape sliding.Oval tape and penholder are used cooperatively, and facilitate the drafting of elliptic arc.
Compared with prior art, the utility model has the following beneficial effects:
The utility model uses the compasses supporting leg of stretching structure, while the first pilot pin and second is arranged in compasses supporting leg and determines
Oval tape is arranged in the first pilot pin and the second pilot pin for position needle, facilitates the carrying of elliptical drafting and Simple ellipse drawing instrument.
Detailed description of the invention
Fig. 1, Simple ellipse drawing instrument structural schematic diagram；
Fig. 2, Simple ellipse drawing instrument draw oval schematic diagram.
Wherein, 1, compasses supporting leg, 2, pilot pin fixed block, the 3, first pilot pin, 4, hinged shaft, 11, fixed link, 12, flexible
Bar, 13, fixed device, 14, fixation hole.
Specific embodiment
The utility model is described further combined with specific embodiments below.
Embodiment 1
Simple ellipse drawing instrument as shown in Figure 1, including two compasses supporting legs 1, compasses supporting leg 1 include fixed link 11 and telescopic rod
12；Telescopic rod 12 slides in fixed link 11；Pilot pin fixed block 2 is set on one of compasses supporting leg 1, and pilot pin is fixed
First pilot pin 3 is set on block 2, oval tape is set in the first pilot pin 3.Oval tape facilitates the measurement of distance；Fixed link
11 and 12 structure Convenient compasses supporting leg 1 of telescopic rod carry, be convenient for the elliptical drafting of large scale.
Fixed device 13 is arranged in the tail end of telescopic rod 12；Fixation hole 14 is arranged far from one end of telescopic rod 12 in fixed link 11；
Graduation mark is arranged in fixed link 11；Graduation mark is arranged in telescopic rod 12.Fixed device 13 is for fixing chalk or fixed pin；Fixed link 11
Graduation mark is set with telescopic rod 12, is convenient for measuring the distance of elliptical major and minor axis.
Fixation hole 14 is connected by hinged shaft 4, and the second pilot pin is arranged in the bottom of hinged shaft 4, is arranged in the second pilot pin and is tightened
Tape hole.Tighten tape hole for fixed oval tape.
Oval tape, which passes through, tightens tape hole, and penholder is arranged on oval tape and graduation mark, penholder are located at the first pilot pin 3
And second between pilot pin, penholder is along oval tape sliding.Oval tape and penholder are used cooperatively, and facilitate the drafting of elliptic arc.
In use, doing the perpendicular bisector of major axis A C and short axle BD first, two lines going cross each other are in O point, using B point as the center of circle, AO
Length be that radius does circle, it is round to intersect at E point and F point with major axis A C；First pilot pin 3 of Simple ellipse drawing instrument and the second pilot pin
It is separately fixed at E point and F point, oval tape sets length as the length of major axis A C, when oval tape is in tight state, penholder
Camber line is drawn, elliptical drafting is completed.
The present embodiment uses the compasses supporting leg using stretching structure, while the first pilot pin and second is arranged in compasses supporting leg
Oval tape is set in pilot pin, the first pilot pin and the second pilot pin, facilitates the carrying of elliptical drafting and Simple ellipse drawing instrument.
Claims (4)
1. Simple ellipse drawing instrument, including two compasses supporting legs (1), it is characterised in that: the compasses supporting leg (1) includes fixed link
(11) and telescopic rod (12)；Telescopic rod (12) sliding in fixed link (11)；Positioning is set on one of compasses supporting leg (1)
Needle fixed block (2) is arranged the first pilot pin (3) on pilot pin fixed block (2), and oval tape is arranged in the first pilot pin (3).
2. Simple ellipse drawing instrument according to claim 1, it is characterised in that: the tail end of the telescopic rod (12), which is arranged, to be fixed
Device (13)；Fixation hole (14) are arranged far from the one end of telescopic rod (12) in fixed link (11)；Graduation mark is arranged in fixed link (11)；It stretches
Graduation mark is arranged in contracting bar (12).
3. Simple ellipse drawing instrument according to claim 2, it is characterised in that: the fixation hole (14) is connected by hinged shaft (4)
It connects, the second pilot pin is arranged in the bottom of hinged shaft (4), and tape hole is tightened in setting in the second pilot pin.
4. Simple ellipse drawing instrument according to claim 1 or 3, it is characterised in that: the oval tape, which passes through, tightens tape
Penholder and graduation mark are arranged on oval tape for hole, and penholder is between the first pilot pin (3) and the second pilot pin, and penholder is along ellipse
Circle tape sliding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820604043.4U CN208515250U (en) | 2018-04-25 | 2018-04-25 | Simple ellipse drawing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820604043.4U CN208515250U (en) | 2018-04-25 | 2018-04-25 | Simple ellipse drawing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208515250U true CN208515250U (en) | 2019-02-19 |
Family
ID=65341470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820604043.4U Expired - Fee Related CN208515250U (en) | 2018-04-25 | 2018-04-25 | Simple ellipse drawing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208515250U (en) |
-
2018
- 2018-04-25 CN CN201820604043.4U patent/CN208515250U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 Termination date: 20210425 |