CN105437835A - Small compasses - Google Patents
Small compasses Download PDFInfo
- Publication number
- CN105437835A CN105437835A CN201510912546.9A CN201510912546A CN105437835A CN 105437835 A CN105437835 A CN 105437835A CN 201510912546 A CN201510912546 A CN 201510912546A CN 105437835 A CN105437835 A CN 105437835A
- Authority
- CN
- China
- Prior art keywords
- compasses
- tape measure
- housing
- opening
- fixing feet
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
- B43L9/02—Compasses
- B43L9/04—Beam compasses
- B43L9/045—Tape compasses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L12/00—Means to prevent slippage
Landscapes
- Tape Measures (AREA)
Abstract
The invention relates to a pair of small compasses. The small compasses comprise a compasses head, a fixed leg and a rotating leg and further comprise a shell, wherein the compasses head is arranged at the top end of the shell, the fixed leg is fixed below the shell, a rubber pad is arranged at the bottom of the fixed leg, a tape is arranged in the shell, an opening is formed in one side of the shell, one end of the tape extends out of the opening, a limit piece is arranged at the opening part, the rotating leg is fixed to the end, extending out of the opening, of the tape, and a pencil lead is arranged at the bottom of the rotating leg. The size of the compasses is small.
Description
Technical field
The present invention relates to a kind of compasses, belong to novel office table separation.
Background technology
Compasses, in mathematics and drawing, are used to the instrument drawing circle or string, are usually used in construction with ruler and compasses.Compasses make material normally metal, be provided with two pin, upper end thereof, lower end can arbitrarily separate or close up, and to adjust the size of painted arc radius, the end of a pin is needle point, and the end of another pin can load paints pencil line or the line of ink marker.
But compasses draw circular arc radius maximum depend on the length with two pin, the length can drawing the larger then compass foot of arc radius is longer, and this size just causing compasses becomes large, is unfavorable for carrying, depositing.
Summary of the invention
The technical problem to be solved in the present invention is: propose a kind of drawn arc radius not by the undersized compasses that the length of compass foot limits for the deficiencies in the prior art.
The present invention is the technical scheme solving the problems of the technologies described above proposition: a kind of small size compasses, comprise compasses head, fixing feet and rotation pin, also comprise housing, described compasses head is arranged at housing tip, described fixing feet is fixed on below housing, rubber blanket is provided with bottom described fixing feet, tape measure is provided with in described housing, described housing side is provided with opening, described tape measure one end is stretched out from opening part, described opening part is provided with margining tablet, and described rotation pin is fixed on tape measure and stretches out on one end of opening, and described rotation foot bottom is provided with lead for retractable pencil.
Being improved to technique scheme: be provided with a vertical central shaft in described housing, the described tape measure other end is fixing on center shaft, and described tape measure winding is on described central shaft.
Being improved to technique scheme: described compasses head, central shaft and fixing feet are positioned on same axis.
Being improved to technique scheme: described tape measure is provided with scale.
When the present invention uses, first according to the radius of required circular arc, tape measure is pulled out corresponding length, with margining tablet, tape measure is stuck, fixing feet is stood on paper, pin compasses head on the other hand, arrest rotation pin on the other hand, tape measure is stretching, then draw circle.
Beneficial effect of the present invention is:
Tradition compasses draw arc radius size depend on the size that two compass foots open, the length that tape measure stretches out then is depended in the present invention, after being finished, tape measure can be retracted in housing, both solved traditional compasses draw arc radius by compass foot length restriction problem, turn reduce compasses size.
Be provided with rubber blanket bottom fixing feet, both ensure that the frictional force of fixing feet and paper, paper can not be punctured again or stab staff.
figure of description
Fig. 1 is the structural representation of the embodiment of the present invention.
Detailed description of the invention
Embodiment
As shown in Figure 1, the small size compasses of the present embodiment, comprise compasses head 1, fixing feet 2 and rotate pin 3, also comprise housing 4, compasses head 1 is arranged at housing 4 top, and fixing feet 2 is fixed on below housing 4, is provided with rubber blanket 21 bottom fixing feet 2, tape measure 5 is provided with in housing 4, housing 4 side is provided with opening 41, and tape measure 4 one end is stretched out from opening 41, and opening 41 place is provided with margining tablet 42, rotation pin 3 is fixed on tape measure 5 and stretches out on one end of opening 41, rotates bottom pin 3 and is provided with lead for retractable pencil 31.
Be provided with a vertical central shaft 43 in housing 4, tape measure 5 other end is fixed on central shaft 43, and tape measure 5 winding is on central shaft 43.Compasses head 1, central shaft 43 and fixing feet 2 are positioned on same axis.Tape measure 5 is provided with scale.
A kind of small size compasses of the present invention are not limited to the various embodiments described above, and all employings are equal to the technical scheme of replacing and being formed, and all drop on the protection domain of application claims.
Claims (4)
1. small size compasses, comprise compasses head, fixing feet and rotation pin, it is characterized in that: also comprise housing, described compasses head is arranged at housing tip, described fixing feet is fixed on below housing, be provided with rubber blanket bottom described fixing feet, be provided with tape measure in described housing, described housing side is provided with opening, described tape measure one end is stretched out from opening part, described opening part is provided with margining tablet, and described rotation pin is fixed on tape measure and stretches out on one end of opening, and described rotation foot bottom is provided with lead for retractable pencil.
2. small size compasses according to claim 1, is characterized in that: be provided with a vertical central shaft in described housing, the described tape measure other end is fixing on center shaft, and described tape measure winding is on described central shaft.
3. small size compasses according to claim 2, is characterized in that: described compasses head, central shaft and fixing feet are positioned on same axis.
4., according to the described small size compasses of one of claims 1 to 3, it is characterized in that: described tape measure is provided with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510912546.9A CN105437835A (en) | 2015-12-11 | 2015-12-11 | Small compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510912546.9A CN105437835A (en) | 2015-12-11 | 2015-12-11 | Small compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105437835A true CN105437835A (en) | 2016-03-30 |
Family
ID=55548661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510912546.9A Pending CN105437835A (en) | 2015-12-11 | 2015-12-11 | Small compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105437835A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2430254Y (en) * | 2000-07-03 | 2001-05-16 | 王雅纯 | Band tape and compass |
| CN2470131Y (en) * | 2001-03-21 | 2002-01-09 | 程峰 | Convenient compasses |
| KR20060020433A (en) * | 2004-08-31 | 2006-03-06 | 이기태 | A tapeline com-passes |
| CN201881758U (en) * | 2010-12-09 | 2011-06-29 | 祝钰翔 | Supporting rod of compasses capable of preventing stab injuries |
| CN203713327U (en) * | 2014-02-21 | 2014-07-16 | 赵汝波 | Roll type compass for primary school students |
-
2015
- 2015-12-11 CN CN201510912546.9A patent/CN105437835A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2430254Y (en) * | 2000-07-03 | 2001-05-16 | 王雅纯 | Band tape and compass |
| CN2470131Y (en) * | 2001-03-21 | 2002-01-09 | 程峰 | Convenient compasses |
| KR20060020433A (en) * | 2004-08-31 | 2006-03-06 | 이기태 | A tapeline com-passes |
| CN201881758U (en) * | 2010-12-09 | 2011-06-29 | 祝钰翔 | Supporting rod of compasses capable of preventing stab injuries |
| CN203713327U (en) * | 2014-02-21 | 2014-07-16 | 赵汝波 | Roll type compass for primary school students |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160330 |