CN201421334Y - Compass - Google Patents
Compass Download PDFInfo
- Publication number
- CN201421334Y CN201421334Y CN2009201544534U CN200920154453U CN201421334Y CN 201421334 Y CN201421334 Y CN 201421334Y CN 2009201544534 U CN2009201544534 U CN 2009201544534U CN 200920154453 U CN200920154453 U CN 200920154453U CN 201421334 Y CN201421334 Y CN 201421334Y
- Authority
- CN
- China
- Prior art keywords
- scale
- compass
- index dial
- pedestal
- compass assembly
- 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 relates to indoor and outdoor orienting tools, in particular to a compass, which comprises a base, a dial scale and a compass assembly. The dial scale which is circular and embeddedat the center of the base is provided with a word region and a scale region carved with scale values of 360 degrees, the scale region is located on the inner side of the word region, the compass assembly is embedded at the center of the dial scale, and a radial distance between scale values on the dial scale and two tips of a magnetic pointer of the compass assembly is equal to or less than 1mm. Because the scale region of scale values of 360 degrees is located on the inner side of the word region, and the radial distance between the scale values on the dial scale and the two tips of a magnetic pointer of the compass assembly is equal to or less than 1mm, the two tips of the compass assembly point the scales directly, and precision is increased to 0.5 degree when reading orientation values, thereby greatly reducing reading error of degrees.
Description
Technical field
The utility model relates to indoor outer orienting tool, particularly relates to a kind of box compass.
Background technology
Box compass is a kind of indoor outer orienting tool, can determine the position of observation point and the accurate number of degrees of locality by it.The style of box compass is a lot, but structure is consistent substantially.China utility model patent CN201072341Y discloses a kind of compass, as shown in Figure 1, comprise pedestal 1, rotating disk 2 and compass 3, described pedestal 1 and described rotating disk 2 are concentric structure, described compass 3 is positioned at the center of pedestal, the inner ring of described rotating disk 2 is printed with Chinese zodiac literal, and centre circle is printed with the literal in the orientation of opening the door, and the outer ring is printed with the digital calibration value of 360 degree.Above-mentioned compass, because the numerals of 360 degree are positioned at the outermost of literal, the digital calibration value distance on the two ends of compass 3 and the rotating disk 2 is far away, so causes when reading location reference precision not high.
The utility model content
Technical problem to be solved in the utility model is that solution box compass precision is not high, and convenient reading is problem efficiently.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted provides a kind of box compass, comprise pedestal, index dial and compass assembly, described index dial is circular and is inlaid in the central authorities of pedestal, this index dial is provided with literal field and is carved with the scale area of 360 degree scale numerical value, and scale area is positioned at the inboard of literal field, described compass assembly is inlaid in the central authorities of index dial, and two tips of needle and the radial distance≤1mm between the scale numerical value on the described index dial in the compass assembly.360 degree scales come with the function distinguishing of dark red dichromatism with reading.
In the such scheme, be provided with ball collar between described pedestal and the compass assembly lower surface.
The upper surface of described pedestal is provided with orthogonal cross direction position line.
Described pedestal is flat four-prism shape.
The utility model, because the degree of 360 on index dial scale numerical value district is positioned at the inboard of literal field, and the radial distance≤1mm between the scale numerical value in the compass assembly on two of needle tips and the index dial, two tips of needle directly face toward scale in the compass assembly like this, when reading location reference, accurate rate is brought up to 0.5 degree, significantly reduced the error that reads the number of degrees.
Description of drawings
Fig. 1 is the prior art structural representation;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is a sectional view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is made detailed explanation.
As Fig. 2, shown in Figure 3, the utility model comprises pedestal 11, compass assembly 12 and index dial 13, described pedestal 11 is flat four-prism shape, described index dial 13 is circular, which is provided with the inboard that literal field 13-1 and scale area 13-2 and scale area 13-2 are positioned at literal field 13-1, be carved with 360 on the scale area 13-2 and spend the outside that scales and numeric indicia and numeric indicia are positioned at scale, index dial 13 is inlaid in the central authorities of pedestal 11, pedestal 11 is provided with ball collar 14 and this ball collar 14 is arranged in the index dial 13 interior rings, the external diameter of described compass assembly 12 equates with the internal diameter of index dial, this compass assembly 12 places on the ball collar 14, ball collar 14 has solved the dirigibility that compass rotates, and reduces the gap of pedestal and compass and the error that operation produced simultaneously.Pedestal 11, compass assembly 12 are concordant with the upper surface of index dial 13, needle in the compass assembly 12 is selected the stronger big needle of coercive force for use, diameter is 10 centimetres, and scale is directly pointed at the two ends of needle, and and described index dial 13 on scale between radial distance≤1mm.The upper surface of pedestal 11 is provided with orthogonal cross direction position line 15, when using box compass to carry out the outdoor building thing when deciding direction, aim at buildings with cross direction position line 15, rotation scale 13 is also aimed at cross position line 15, utilizes the north and south of compass to point to the read direction data.
The utility model is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, all fall within the protection domain of the present utility model.
Claims (4)
1, box compass, comprise pedestal, index dial and compass assembly, described index dial is circular and is inlaid in the central authorities of pedestal, this index dial is provided with literal field and is carved with the scale area of 360 degree scales and numeric indicia, described compass assembly is inlaid in the central authorities of index dial, it is characterized in that: the numeric indicia that the scale area on the described index dial is positioned at the inboard and described scale area of literal field is positioned at the outside of scale, two tips of needle and the radial distance≤1mm between the scale on the described index dial in the described compass assembly.
2, box compass as claimed in claim 1 is characterized in that being provided with ball collar between described pedestal and the compass assembly lower surface.
3, box compass as claimed in claim 1 or 2 is characterized in that the upper surface of described pedestal is provided with orthogonal cross direction position line.
4, box compass as claimed in claim 3 is characterized in that described pedestal is flat four-prism shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201544534U CN201421334Y (en) | 2009-05-14 | 2009-05-14 | Compass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201544534U CN201421334Y (en) | 2009-05-14 | 2009-05-14 | Compass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201421334Y true CN201421334Y (en) | 2010-03-10 |
Family
ID=41807994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201544534U Expired - Fee Related CN201421334Y (en) | 2009-05-14 | 2009-05-14 | Compass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201421334Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197906A (en) * | 2014-09-15 | 2014-12-10 | 瑞安市顺风航仪有限公司 | Axle needle of magnetic compass and application of ball pen point in manufacture of axle needle of magnetic compass |
| CN106370165A (en) * | 2016-08-31 | 2017-02-01 | 曹素华 | Automatic positioning direct indicating compass |
-
2009
- 2009-05-14 CN CN2009201544534U patent/CN201421334Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197906A (en) * | 2014-09-15 | 2014-12-10 | 瑞安市顺风航仪有限公司 | Axle needle of magnetic compass and application of ball pen point in manufacture of axle needle of magnetic compass |
| CN106370165A (en) * | 2016-08-31 | 2017-02-01 | 曹素华 | Automatic positioning direct indicating compass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100310 Termination date: 20150514 |
|
| EXPY | Termination of patent right or utility model |