CN201745330U - Central-angle radius compasses - Google Patents
Central-angle radius compasses Download PDFInfo
- Publication number
- CN201745330U CN201745330U CN2010201125478U CN201020112547U CN201745330U CN 201745330 U CN201745330 U CN 201745330U CN 2010201125478 U CN2010201125478 U CN 2010201125478U CN 201020112547 U CN201020112547 U CN 201020112547U CN 201745330 U CN201745330 U CN 201745330U
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- CN
- China
- Prior art keywords
- pin
- scale
- principal arm
- auxiliary
- draw
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- 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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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The utility model relates to central-angle radius compasses, which belongs to the technical fields of writing or drawing appliances of a printing subsection of a working and transporting part, writing or drawing articles of a main class of office articles and circular-curve drawing instruments or similar instrument groups of a subclass of writing or drawing auxiliary articles according to the division of international patent classification (IPC). The central-angle radius compasses of the utility model mainly overcomes the deficiency that traditional compasses can not make a circle with a specified radius or a circular arc with a specified central angle. The technical scheme has the key points that a dial and a rotating handle are combined to determine the central angle, and a vernier and a fixing device are used for determining the radius of the circle. The utility model can be widely applied to the aspects of drawing, engineering drawings, mechanical design and the like.
Description
Technical field
The central angle radius compasses belongs to operation Department of Transportation by International Patent Classification (IPC) (IPC) division, and printing branch is write or drawing appliance; The big class of office appliance is write or drawing article; Write or draw assistant product group, circular curve plotter or analogous instrument technical group field.
Background technology
At present, known compasses are a kind ofly to draw round drawing instrument, but existing compasses can't independently be determined drawn radius of a circle, can not independently do for the corresponding arc of a certain central angle.Use to compasses has caused great restriction.
Summary of the invention
For solving the above-mentioned deficiency of existing compasses, the central angle radius compasses that the utility model provides can independently be made within the specific limits the circle of radius or the circular arc of central angle arbitrarily arbitrarily.
Central angle radius compasses of the present utility model is made of principal arm, rotating handle, dial, auxiliary, crosspointer master ga(u)ge pin, secondary rule pin, scale, rotatable scale draw-in groove.
Technical scheme is done on the drawing for crosspointer master ga(u)ge pin principal arm being vertically fixed on, scale is fixed with fixture and rotatable scale draw-in groove, again scale is fixed with the fixture that reaches secondary rule pin and auxiliary junction on the secondary rule pin, rotate rotating handle again, compare the circular arc of a certain central angle that draws by cue mark on the rotating handle and dial, if rotate one week of rotating handle, the circle that then can draw and conform to reading on the scale.
The beneficial effect of central angle radius compasses of the present utility model is: circle of specifying radius and the circular arc of specifying central angle can draw.
Below in conjunction with accompanying drawing the utility model is further specified.
Description of drawings
Accompanying drawing 1 is the utility model structural representation.
Accompanying drawing 2 is the connection diagram of the utility model rotating handle and dial.
Among Fig. 1, principal arm (1), rotating handle (2), dial (3), auxiliary (4), crosspointer master ga(u)ge pin (5), secondary rule pin (6), scale (7), rotatable scale draw-in groove (8).
Among Fig. 2, rotating handle (2), dial (3).
The specific embodiment
In Fig. 1, fixedly connected with crosspointer master ga(u)ge pin (5) in principal arm (1) lower end, rotatable scale draw-in groove (8) is arranged in the middle and lower part, and the upper end is run through rotating handle (2) and is fixedly connected with dial (3) on the top.Rotating handle (2) one sides and auxiliary (4) are hinged, and opposite side hollow is run through by principal arm (1), and top is the hollow knob of fixedlying connected with it.Auxiliary (4) is made of two-section, and thick one section is enclosed within one section thin outside, thereby reaches telescopic purpose.The lower end is hinged with secondary rule pin (6).Crosspointer master ga(u)ge pin (5) is made of main pin and secondary pin, main pin and principal arm conllinear, and secondary pin and equal in length parallel with main pin is fixed in the principal arm side.Secondary rule pin (6) have a rotary fixing device with auxiliary (4) hinged place, and secondary rule pin (6) middle part has a cylindrical protrusions, bottom to be connected with lead for retractable pencil fixture and the lead for retractable pencil that has spring.Scale (7) is marked with scale, and have the slideway that an end has the rotation breach, breach can make scale (7) rotation parallel with principal arm (1), and scale (7) other end is gone up the draw-in groove that cylindrical protrusions and secondary rule pin (6) and auxiliary (4) hinged place fixture are complementary for advising pin (6) with pair.Rotatable scale draw-in groove (8) encircles on principal arm, and draw-in groove and scale fixture are arranged above.
In Fig. 2, knob edge, rotating handle (2) top is useful on the cue mark of check and correction reading, and the knob internal diameter is slightly larger than dial (3).
Claims (1)
1. the central angle radius compasses comprises principal arm (1), rotating handle (2), dial (3), auxiliary (4), crosspointer master ga(u)ge pin (5), secondary rule pin (6), scale (7), rotatable scale draw-in groove (8); It is characterized in that: fixedly connected with crosspointer master ga(u)ge pin (5) in principal arm (1) lower end, rotatable scale draw-in groove (8) is arranged in the middle and lower part, and the upper end is run through rotating handle (2) and is fixedly connected with dial (3) on the top; Rotating handle (2) one sides and auxiliary (4) are hinged, and opposite side hollow is run through by principal arm (1), and top is the hollow knob of fixedlying connected with it, and the knob edge is useful on the cue mark of check and correction reading, and the knob internal diameter is slightly larger than dial (3); Auxiliary (4) is made of two-section, and thick one section is enclosed within one section thin outside, thereby reaches telescopic purpose; The lower end is hinged with secondary rule pin (6); Crosspointer master ga(u)ge pin (5) is made of main pin and secondary pin, main pin and principal arm conllinear, and secondary pin and equal in length parallel with main pin is fixed in principal arm (1) side; Secondary rule pin (6) have a rotary fixing device with auxiliary (4) hinged place, and secondary rule pin (6) middle part has a cylindrical protrusions, bottom to be connected with lead for retractable pencil fixture and the lead for retractable pencil that has spring; Scale (7) is marked with scale, and has the slideway that an end has the rotation breach, and scale (7) other end has with the secondary pin (6) of advising goes up the draw-in groove that cylindrical protrusions and secondary rule pin (6) and auxiliary (4) hinged place fixture are complementary; Rotatable scale draw-in groove (8) encircles on principal arm, and draw-in groove and scale fixture are arranged above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201125478U CN201745330U (en) | 2010-02-11 | 2010-02-11 | Central-angle radius compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201125478U CN201745330U (en) | 2010-02-11 | 2010-02-11 | Central-angle radius compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201745330U true CN201745330U (en) | 2011-02-16 |
Family
ID=43580002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201125478U Expired - Fee Related CN201745330U (en) | 2010-02-11 | 2010-02-11 | Central-angle radius compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201745330U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297933A (en) * | 2018-12-10 | 2019-02-01 | 大连海洋大学 | A kind of aciculiform vegetation blade reflective spectral measure instrument and measurement method |
-
2010
- 2010-02-11 CN CN2010201125478U patent/CN201745330U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297933A (en) * | 2018-12-10 | 2019-02-01 | 大连海洋大学 | A kind of aciculiform vegetation blade reflective spectral measure instrument and measurement method |
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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: 20110216 Termination date: 20120211 |