CN2878086Y - Compasses - Google Patents
Compasses Download PDFInfo
- Publication number
- CN2878086Y CN2878086Y CN 200620081546 CN200620081546U CN2878086Y CN 2878086 Y CN2878086 Y CN 2878086Y CN 200620081546 CN200620081546 CN 200620081546 CN 200620081546 U CN200620081546 U CN 200620081546U CN 2878086 Y CN2878086 Y CN 2878086Y
- Authority
- CN
- China
- Prior art keywords
- compasses
- fixed arm
- chalk
- arm
- sucker
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a drawing implement, in particular to compasses. The compasses comprise a handle, a fixed arm and a moving arm, wherein a sucker with a universal joint is arranged on the end of the fixed arm and a chalk sleeve is arranged on the end of the moving arm. The compasses are capable of fixing the fixed arm on the blackboard to escape from sliding according to the sucker with the universal joint. The chalk sleeve with turning knob and spiral is capable of changing the length of the chalk to avoid the trouble of changing the chalks frequently.
Description
Affiliated technical field
The utility model belongs to drawing instrument, particularly compasses.
Background technology
Drawing instrument commonly used in the mathematical education particularly of imparting knowledge to students during compasses, common compasses for teaching fixed arm end is equipped with a tip of a root pin, during use prong is inserted on the blackboard, all right for wooden blackboard, but can't fix for the Glass blackboard prong, cause the location inaccurate, the chalk of lever arm installation needs often to change in addition.
Summary of the invention
It is convenient that the purpose of this utility model provides a kind of location, and need not often to change the technical scheme of the novel bow compass of chalk
The technical solution of the utility model is a kind of compasses, comprises handle, fixed arm, lever arm, and its structure is: the sucker of band universal joint is equipped with in the end of compasses fixed arm, and the chalk sleeve is equipped with in the end of compasses lever arm.
On the described chalk sleeve knob and spiral are housed.
The novel bow compass that the utility model provides is owing to be equipped with the sucker of band universal joint on the fixed arm, can easily fixed arm be fixed on and avoid on the blackboard sliding, the length that the chalk sleeve of band knob and spiral can the regulated at will chalk is housed on the lever arm, avoids frequently changing the trouble of chalk.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model,
Among the figure, 1. handle, 2. fixed arm, 3. universal joint, 4. sucker, 5. knob, 6. spiral, 7. chalk sleeve, 8. chalk, 9. lever arm.
The specific embodiment
The specific embodiment of the present utility model is, as shown in the figure:
Claims (2)
1. compasses comprise handle, fixed arm, lever arm, it is characterized in that: the sucker of band universal joint is equipped with in the end of compasses fixed arm, and the chalk sleeve is equipped with in the end of compasses lever arm.
2. by the determined a kind of compasses of claim 1, it is characterized in that: on the described chalk sleeve knob and spiral are housed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200620081546 CN2878086Y (en) | 2006-03-09 | 2006-03-09 | Compasses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200620081546 CN2878086Y (en) | 2006-03-09 | 2006-03-09 | Compasses |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2878086Y true CN2878086Y (en) | 2007-03-14 |
Family
ID=37860500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 200620081546 Expired - Fee Related CN2878086Y (en) | 2006-03-09 | 2006-03-09 | Compasses |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2878086Y (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102018577A (en) * | 2010-12-23 | 2011-04-20 | 褚福海 | Breast reduction operation line drawing instrument by round block technique |
CN109017057A (en) * | 2018-07-18 | 2018-12-18 | 枣庄度秘信息科技有限公司 | A kind of compass for math teaching |
-
2006
- 2006-03-09 CN CN 200620081546 patent/CN2878086Y/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102018577A (en) * | 2010-12-23 | 2011-04-20 | 褚福海 | Breast reduction operation line drawing instrument by round block technique |
CN109017057A (en) * | 2018-07-18 | 2018-12-18 | 枣庄度秘信息科技有限公司 | A kind of compass for math teaching |
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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 |