CN2878086Y - Compasses - Google Patents

Compasses Download PDF

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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
Application number
CN 200620081546
Other languages
Chinese (zh)
Inventor
张德波
王振勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 200620081546 priority Critical patent/CN2878086Y/en
Application granted granted Critical
Publication of CN2878086Y publication Critical patent/CN2878086Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

A kind of compasses
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:
Embodiment 1, and a kind of compasses comprise handle 1, fixed arm 2, lever arm 9, and its structure is: the sucker 4 of band universal joint 3 is equipped with in the end of compasses fixed arm, and the end of compasses lever arm is equipped with chalk sleeve 7 chalks 8 and is contained in the sleeve.
Embodiment 2, and a kind of compasses comprise handle 1, fixed arm 2, lever arm 9, its structure is: the sucker 4 of band universal joint 3 is equipped with in the end of compasses fixed arm, chalk sleeve 7 is equipped with in the end of compasses lever arm, and knob 5 and spiral 6 are housed on the sleeve, and chalk 8 is contained in the sleeve.

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.
CN 200620081546 2006-03-09 2006-03-09 Compasses Expired - Fee Related CN2878086Y (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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