CN2565635Y - Angle and circular arc drawing instrument - Google Patents
Angle and circular arc drawing instrument Download PDFInfo
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- CN2565635Y CN2565635Y CN 02262155 CN02262155U CN2565635Y CN 2565635 Y CN2565635 Y CN 2565635Y CN 02262155 CN02262155 CN 02262155 CN 02262155 U CN02262155 U CN 02262155U CN 2565635 Y CN2565635 Y CN 2565635Y
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- circle
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Abstract
The utility model relates to a drawing instrument for an angle and a circular arc. A hollow circular or semicircular plate provided angle marking lines and scale values is additionally provided with a rotating straight ruler which can rotate around the center of circle of the circular or semicircular plate. The rotating straight ruler is provided with length marking lines and length values. When an angle is surveyed, the operation is very convenient. When a circular arc or a circle is surveyed, the utility model can replace a protractor and compasses.
Description
Affiliated technical field
The utility model relates to measurement, the drafting instrument of a kind of angle and circular arc.
Background technology
At present, measure and draw angle and circular arc, respectively or be used and finish generally all with protractor or compasses.If draw the angle of some angle values, then at first draw the angle on one side, then with the center of circle of protractor to overlapping with this limit end points, measure angle value with protractor again, and draw a bit with pencil, connect the end points on the one side at this point and angle at last.If draw the circular arc of a certain angle value, then except that above-mentioned steps, still to increase by a step, promptly measure radius value with compasses after, be the center of circle one section circular arc that draws with the cusp at angle.As seen, to be used for picture angle and circular arc very inconvenient for existing instrument of surveying and mapping.
Summary of the invention
In order to overcome existing angle, the awkward shortcoming of circular arc instrument of surveying and mapping, it is a kind of in the process of mapping angle and circular arc that the utility model provides, and both can replace protractor and compasses, again the surveying instrument of simple operation.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: at the circle of a hollow or semicircular plate and on the basis of uniform radial angle groove in the center of circle and angle value, be characterized in that it also has a rotation ruler, the above-mentioned center of circle is passed on one side of this rotation ruler, this limit begins to make tip-angled shape from the center of circle, and the rotation ruler can be around this center of circle rotation, and the longitudinal edge that rotates ruler simultaneously is shaped on length groove and scale value.
Like this, when measuring the angle at an angle, only need the one side at angle is overlapped with the on line of the center of circle and 0 ° of scale, rotate the rotation ruler, the one side by the center of circle is overlapped with the another side of desiring measured angular, can read the angle value at this angle easily.In like manner,, rotate the rotation ruler again, use then by the draw another side at angle of the limit in the center of circle to get final product to the angle value of being scheduled to if the angle can be drawn on one side with the limit of passing through the center of circle of rotation ruler earlier in the angle that will draw a certain angle value.If draw the circular arc of certain angle, then only need to increase a step, the Convenienct pencil point is against rotating and can finish by the length scale on the limit in the center of circle.For the surveying instrument on being contained in circular slab, draw full circle and also can realize like a cork.
Therefore, the beneficial effects of the utility model are, and are convenient during the mapping angle, quick; During mapping circular arc (or circle), two kinds of instruments of alternative protractor and compasses.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is that the master of the utility model embodiment 1 and 2 looks schematic diagram.
Fig. 2 is an A-O-O-A stagewise cutaway view schematic diagram among Fig. 1.
Fig. 3 is a B-B profile among Fig. 1 and Fig. 4.
Fig. 4 is that the master of the utility model embodiment 3 looks schematic diagram.
Fig. 5 is an A-O-A revolved section schematic diagram among Fig. 4.
Fig. 6 is the partial front elevation view of the utility model embodiment 4.
Fig. 7 is a C-C generalized section among Fig. 6.
The specific embodiment
Embodiment 1: among Fig. 1～Fig. 3, circular slab (1) is by bottom (11), middle level (12) and top layer (13) totally three layers of formation.Wherein be shaped on a circular positioning spigot on the bottom (11).The diameter in middle level (12) and thickness rotate to be suitable sliding in above-mentioned positioning spigot.Also have a wedge angle (111) on the interior circle of bottom (11) and middle level (12).The cusp of wedge angle (111) overlaps with the center of circle of circular slab (1), one side the 0 ° of scale value that just in time is positioned at circular slab (1) of wedge angle.On this limit, also be shaped on length groove and length value.
The bottom surface of the wedge angle of rotation ruler (2) and middle level (12) fixed connection of circular slab, and the cusp of wedge angle overlaps with the center of circle of middle level (12).Simultaneously, be shaped on a groove (24) in the wedge angle bottom surface of rotation ruler (2) and the corresponding position of middle level (12).Can freely rotate after the width of groove (24) and the degree of depth are inserted with top layer (13) and be advisable.
Top layer (13) is arranged in groove (24).Bottom (11), middle level (12) and the superimposed successively fixed connection of top layer (13).
Above-mentioned structure makes rotation ruler (2) can rotate along the positioning spigot of bottom (11) with the middle level (12) of circular slab (1), and promptly rotating ruler (2) can rotate with respect to top layer (13).
Embodiment 2: referring to Fig. 4, Fig. 5 and Fig. 3. and semicircular plate shown in the figure (1 ') is by bottom (11 '), middle level (12 ') and top layer (13 ') totally three layers of formation.Wherein bottom (11 ') and top layer (13 ') must be in height greater than suitable values of semicircle, and bottom (11 ') face relative with top layer (13 ') is shaped on the semicircle positioning spigot of the identical size and the degree of depth along the radius outer rim; Inner lane at the semicircle positioning spigot of bottom (11 ') also is shaped on a semicircle locating slot (112 '); Middle level (12 ') is one section fan-shaped annulus, be shaped on the positioning boss (121 ') of a circular arc along its outer rim, the cylindrical of boss and interior radius of a circle value can be free to slide in semicircle locating slot (112 ') with the boss that forms and be advisable, and the height of boss is advisable in conjunction with the spatial depth that the back forms to be slightly less than bottom (11 ') and top layer (13 ') positioning spigot.
The bottom surface and middle level (12 ') fixed connection of the wedge angle of rotation ruler (2), and the cusp of wedge angle overlaps with the center of circle of middle level (12 '); Simultaneously, make a groove (24 '), can rotate freely after the width of groove (24 ') and the degree of depth are inserted with top layer (13 ') and be advisable in the wedge angle bottom surface of rotation ruler (2) and the corresponding position of middle level (12 ').
Top layer (13 ') is arranged in groove (24 '); Bottom (11 '), middle level (12 ') and the superimposed successively fixed connection of top layer (13 ').
In the top layer (13 '), be shaped on a horizontal groove (113 ') from the center of circle to the lower edge radius, when the length of groove (113 ') and the degree of depth placed this groove with the wedge angle that rotates ruler (2), that rotates ruler (2) passed semicircular plate (1 ') one side the 180 ° of scale values of angle that are in the center of circle are advisable.
Embodiment 3. is referring to Fig. 1～Fig. 4. and this embodiment is an improved technical scheme on the basis of embodiment 1 or 2.Improved place is: the rotation ruler is by lower floor (21) and upper strata (22) formation, wherein lower floor (21) longitudinally center line be shaped on an obstructed sipes, upper strata (22) longitudinally center line are shaped on a logical narrow groove.When lower floor (21) and upper strata (22) superimposed affixed after, the long trough space of Xing Chenging can allow the slide plate (23) of packing in advance be along the longitudinal movement between the two.Symmetrical centre at slide plate (23) also is shaped on a small through hole.Like this, tip of a pencil can insert this small through hole, is used for the location, and it is more convenient to draw circular arc or bowlder.
Embodiment 4. is referring to Fig. 6 and Fig. 7. and this embodiment is the further improvement to embodiment 3.Improvements are: for dwindling the length of rotation ruler (2), it is divided into forward and backward two sections, back segment is can be with respect to leading portion flexible or remove.Concrete scheme is: the length of leading portion (25) is advisable with the radius that is no more than circle or semicircular plate from the cusp of wedge angle.
Back segment (29) is by lower floor (21 ') and upper strata (22 ') two superimposed formations.Lower floor (21 ') longitudinally center line is shaped on an obstructed sipes, and upper strata (22 ') longitudinally center line are shaped on a logical narrow groove, when lower floor (21 ') and upper strata (22 ') superimposed affixed after, form a long trough space between the two, be called chute.
Fixed connection a stator (23 ') on leading portion (25), and a fixing spacing (using rivet as shown in Figure 7) is arranged between the end face of stator (23 ') and leading portion (25).Can be free to slide behind the chute insertion stator (23 ') of distance values with above-mentioned back segment (29) and be advisable.
Symmetrical centre at stator (23 ') is shaped on a screw, and a jackscrew (27) is housed in the screw, between jackscrew (27) lower end and leading portion (25) end face a rectangle minipad (26) is housed also.
So owing to stator (23 ') is fixed on the leading portion (25), and back segment (29) can be made stretching motion with respect to stator (23 '), so the length of rotation ruler can be regulated.When transferring to a certain position, tighten jackscrew (27), can make forward and backward two fragment position not loosening.For making things convenient for the placement of instrument in writing case, also back segment can be pulled down.
Claims (5)
1. an angle, circular arc surveying instrument, the circle or the semicircular plate that comprise a hollow reach radial angle groove and the angle value uniform around the center of circle, it is characterized in that: it also has a rotation ruler, the above-mentioned center of circle is passed on one side of this rotation ruler, this limit begins to make tip-angled shape from the center of circle, and the rotation ruler can be around this center of circle rotation, and the longitudinal edge that rotates ruler simultaneously is shaped on length groove and length value.
2. surveying instrument according to claim 1 is characterized in that:
A. said circular slab (1) is by bottom (11), middle level (12) and top layer (13) totally three layers of formation, wherein is shaped on a circular positioning spigot on the bottom (11); The external diameter size and the thickness in middle level (12) rotate to be suitable sliding in above-mentioned positioning spigot; Also have a wedge angle (111) on the interior circle of bottom (11) and middle level (12), the cusp of wedge angle (111) overlaps with the center of circle of circular slab (1), one side the 0 ° of scale place that is sitting at circular slab of wedge angle, this limit also is shaped on length groove and scale value,
Middle level (12) fixed connection of the bottom surface of the wedge angle of b. said rotation ruler (2) and circular slab, and the cusp of wedge angle overlaps with the center of circle of middle level (12); Simultaneously, make a groove (24), can rotate freely after the width of groove (24) and the degree of depth are inserted with top layer (13) and be advisable in the wedge angle bottom surface of rotation ruler (2) and the corresponding position of middle level (12),
C. top layer (13) is arranged in groove (24); Bottom (11), middle level (12) and the superimposed successively fixed connection of top layer (13).
3. surveying instrument according to claim 1 is characterized in that:
A. said semicircular plate (1 ') is by bottom (11 '), middle level (12 ') and top layer (13 ') totally three layers of formation, wherein bottom (11 ') and top layer (13 ') must be in height greater than suitable values of semicircle, and bottom (11 ') face relative with top layer (13 ') is shaped on the semicircle positioning spigot of the identical size and the degree of depth along the radius outer rim; Inner lane at the semicircle positioning spigot of bottom (11 ') also is shaped on a semicircle locating slot (112 '); Middle level (12 ') is one section fan-shaped annulus, be shaped on the positioning boss (121 ') of one section circular arc along its cylindrical, its cylindrical and interior radius of circle value can be free to slide in semicircle locating slot (112 ') with the boss that forms and be advisable, the height of positioning boss (121 ') is advisable in conjunction with the spatial depth that the back forms to be slightly less than bottom (11 ') and top layer (13 ') positioning spigot
The bottom surface of the wedge angle of b. said rotation ruler (2) and middle level (12 ') fixed connection, and the cusp of wedge angle overlaps with the center of circle of middle level (12 '); Make a groove (24 ') in the wedge angle bottom surface of rotation ruler (2) and the corresponding position of middle level (12 ') simultaneously, can rotate freely after the width of groove (24 ') and the degree of depth are inserted with top layer (13 ') and be advisable,
C. top layer (13 ') is arranged in groove (24 '); Bottom (11 '), middle level (12 ') and the superimposed successively fixed connection of top layer (13 '),
D. in the top layer (13 '), be shaped on a horizontal groove (113 ') from the center of circle to the lower edge radius, when the length of groove (113 ') and the degree of depth placed this groove with the wedge angle that rotates ruler (2), that rotates ruler (2) passed semicircular plate (1 ') one side the 180 ° of scale values of angle that are in the center of circle are advisable.
4. according to claim 2 or 3 described surveying instruments, it is characterized in that: said rotation ruler (2) is to be made of lower floor (21) and upper strata (22), wherein lower floor (21) longitudinally center line be shaped on an obstructed sipes, upper strata (22) longitudinally center line is shaped on a logical narrow groove, when lower floor (21) and upper strata (22) superimposed affixed after, the long trough space of Xing Chenging can allow the slide plate (23) of packing in advance be along the longitudinal movement between the two, also is shaped on a small through hole in the symmetrical centre of slide plate (23).
5. according to claim 2 or 3 described surveying instruments, it is characterized in that:
A. said rotation ruler (2) is by leading portion (25) and (29) two sections formations of back segment, and wherein the length of leading portion (25) is advisable with the radius that is no more than circle or semicircular plate from the cusp of wedge angle,
B. its posterior segment (29) are by lower floor (21 ') and upper strata (22 ') two superimposed formations; Lower floor (21 ') longitudinally center line is shaped on an obstructed sipes, and upper strata (22 ') longitudinally center line are shaped on a logical narrow groove, when lower floor (21 ') and upper strata (22 ') superimposed affixed after, form a long trough space between the two and be called chute,
C. fixed connection a stator (23 ') on leading portion (25), between the end face of stator (23 ') and leading portion (25) a fixing spacing is arranged, and behind the chute insertion stator (23 ') of distance values with above-mentioned back segment (29), can be free to slide and be advisable,
D. the symmetrical centre at stator (23 ') is shaped on a screw, and a jackscrew (27) is housed in the screw, between jackscrew (27) lower end and leading portion (25) end face a rectangle minipad (26) is housed also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262155 CN2565635Y (en) | 2002-08-28 | 2002-08-28 | Angle and circular arc drawing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262155 CN2565635Y (en) | 2002-08-28 | 2002-08-28 | Angle and circular arc drawing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2565635Y true CN2565635Y (en) | 2003-08-13 |
Family
ID=33728784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02262155 Expired - Fee Related CN2565635Y (en) | 2002-08-28 | 2002-08-28 | Angle and circular arc drawing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2565635Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560313A (en) * | 2013-11-14 | 2014-02-05 | 哈尔滨工业大学 | Radial rib locating device of radial-rib inflatable and unfolding antenna |
| CN104369589A (en) * | 2014-10-30 | 2015-02-25 | 无锡艾科瑞思产品设计与研究有限公司 | Cyclograph |
-
2002
- 2002-08-28 CN CN 02262155 patent/CN2565635Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560313A (en) * | 2013-11-14 | 2014-02-05 | 哈尔滨工业大学 | Radial rib locating device of radial-rib inflatable and unfolding antenna |
| CN103560313B (en) * | 2013-11-14 | 2015-05-06 | 哈尔滨工业大学 | Radial rib locating device of radial-rib inflatable and unfolding antenna |
| CN104369589A (en) * | 2014-10-30 | 2015-02-25 | 无锡艾科瑞思产品设计与研究有限公司 | Cyclograph |
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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 |