CN200984900Y - Precision compasses - Google Patents
Precision compasses Download PDFInfo
- Publication number
- CN200984900Y CN200984900Y CN 200620168105 CN200620168105U CN200984900Y CN 200984900 Y CN200984900 Y CN 200984900Y CN 200620168105 CN200620168105 CN 200620168105 CN 200620168105 U CN200620168105 U CN 200620168105U CN 200984900 Y CN200984900 Y CN 200984900Y
- Authority
- CN
- China
- Prior art keywords
- lead screw
- jack
- utility
- bar
- compasses
- 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
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000002459 sustained effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000003550 marker Substances 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000012466 permeate Substances 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a precise compasses which comprises a strut bar, a revolving bar, a link span, a pinhead and a marker post, wherein the same height of the strut bar and the revolving bar is provided with a jack which is respectively inserted into the lead screw; The surface of the marker post is provided with a jack and an transverse open mouth and the lead screw permeates through the jack into the screw socket on the suspension bar to get fixed while the other lead screw penetrates through the transverse open mouth into the screw socket on the revolving bar. When using the utility model to take measurement, the lead screw on the revolving bar is loosen and according to proportion, adjusting the space of the two lead screw to get the radial length. When determining the radius, just tightening the lead screw can draw up the graphics. The utility model has advantages of simple structure, convenient and utility, beautiful shape, reasonable craftwork and low manufacturing cost.
Description
Technical field the utility model relates to a kind of survey tool, especially a kind of accurate compasses.
Technical background is well-known, and compasses are one of important drafting instruments.People rely on the compasses just can accurately draw circles shape or arc patterns.But but there are many shortcomings in present compasses, particularly can not directly measure the radius length of circular pattern, in drawing process, must use ruler to measure radius length, again two length of supports of compasses are pulled to after the radius length, could draw circular pattern exactly.And in this process if fulcrum is moved, therefore the discovery that people can't be promptly and accurately very easily causes error; And also can waste the plenty of time through twice measurement, reduce operating efficiency.In order to address these problems, we provide a kind of new-type accurate compasses of measuring and drawing function that integrate.
The summary of the invention the purpose of this utility model provides a kind of accurate compasses, is used to solve common compasses and measures accurately poor problem.
For achieving the above object, the accurate compasses of the utility model, comprise support bar, swingle, link, assign into syringe needle and a mark post of supporting bar top, offer thread jack at support bar and swingle near the sustained height position of link, and insert lead screw respectively; Jack and a transverse opening are offered in the mark post surface, and jack is the zero graduation position, and the thread jack that lead screw sees through on the jack insertion support bar is fixed; Another root lead screw is passed transverse opening and is inserted in the thread jack on the swingle.
After adopting said structure, syringe needle and nib place, swingle top straight line all the time with the mark post keeping parallelism, mark post and compasses radius keep proportionate relationship; In measuring process, the lead screw on the loosening swingle is adjusted the spacing of two lead screw under a proportional relationship, thereby is drawn radius length; After radius was determined, the tighten the screws bar was avoided the mark post activity, and this moment, compasses were locked, can't change shape, therefore can not slide in drawing process, can effectively reduce error.
The utility model has the advantages that: simple in structure, convenient and practical, good looking appearance, technology are reasonable, cheap, can also carry out linear measure longimetry in drawing, reduce Drawing Error, increase work efficiency.
Description of drawings Fig. 1 is the overall structure schematic diagram of the accurate compasses of the utility model.
The specific embodiment as shown in Figure 1, the accurate compasses of the utility model, comprise support bar 1, swingle 2, link 3, assign into the syringe needle 4 and a mark post 5 on support bar 1 top, offer thread jack at support bar 1 and swingle 2 near the sustained height position of link 3, and insert lead screw 6 respectively; Jack and a transverse opening 7 are offered in mark post 5 surfaces, and jack is the zero graduation position, and the thread jack that lead screw 6 sees through on the jack insertion support bar 1 is fixed; Another root lead screw is passed transverse opening 7 and is inserted in the thread jack on the swingles 2.
Claims (1)
1, a kind of accurate compasses, comprise support bar (1), swingle (2), link (3), the syringe needle (4) that assigns into support bar (1) top and a mark post (5), it is characterized in that: offer thread jack at support bar (1) and swingle (2) near the sustained height position of link (3), and insert lead screw respectively (6); A jack and a transverse opening (7) are offered in mark post (5) surface, and jack is the zero graduation position, and the thread jack that lead screw (6) sees through on the jack insertion support bar (1) is fixed; Another root lead screw is passed transverse opening (7) and is inserted in the thread jack on the swingle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620168105 CN200984900Y (en) | 2006-12-14 | 2006-12-14 | Precision compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620168105 CN200984900Y (en) | 2006-12-14 | 2006-12-14 | Precision compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200984900Y true CN200984900Y (en) | 2007-12-05 |
Family
ID=38914364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620168105 Expired - Fee Related CN200984900Y (en) | 2006-12-14 | 2006-12-14 | Precision compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200984900Y (en) |
-
2006
- 2006-12-14 CN CN 200620168105 patent/CN200984900Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |