CN203063417U - Compasses for magnetic blackboard - Google Patents
Compasses for magnetic blackboard Download PDFInfo
- Publication number
- CN203063417U CN203063417U CN 201220627381 CN201220627381U CN203063417U CN 203063417 U CN203063417 U CN 203063417U CN 201220627381 CN201220627381 CN 201220627381 CN 201220627381 U CN201220627381 U CN 201220627381U CN 203063417 U CN203063417 U CN 203063417U
- Authority
- CN
- China
- Prior art keywords
- compasses
- supporting leg
- blackboard
- right supporting
- magnet
- 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 relates to compasses for a magnetic blackboard. The compasses comprise a handle, a left supporting leg and a right supporting leg, wherein the left supporting leg and the right supporting leg are hinged together through a screw. The compasses are characterized in that the tail end of the right supporting leg is connected with a magnet through a ball-shaped hinge which can rotate by 360 degrees. The compasses for the magnetic blackboard are simple in structure, convenient to use, capable of effectively solving the problems that a sharp needle of existing compasses for a blackboard is prone to sliding, damaging the blackboard and puncturing a user, and practical. Circles drawn by the utilization of the compasses are continuous and clear.
Description
Technical field
The utility model relates to a kind of educational aid, especially a kind of magnet board compasses.
Background technology
Along with the improvement of teaching facilities, nowadays the give a lesson blackboard of usefulness of many schools has all changed metal irony blackboard into by what cement whitewashed, but employed compasses remain the compasses of original the sort of wooden band prong during teachers' instruction.This compasses in use, not only prong skids easily, and very easily damages blackboard, its prong also damages the user easily.
The utility model content
The utility model provides a kind of magnet board compasses in order to solve present blackboard with the problem that the compasses prong easily skidded, damaged blackboard and can stab the user, and is simple in structure, easy to use, can effectively address these problems.
The technical scheme that the utility model provides is: a kind of magnet board compasses comprise handrail and by left branch leg and right supporting leg that screw hinge links together, it is characterized in that: the end of right supporting leg is connected with magnet by the spherical linkages that can carry out 360 degree rotations.
The beneficial effects of the utility model are: simple in structure, easy to use, efficiently solve the problem that current blackboard easily skidded, damaged blackboard and can stab the user with the compasses prong, and very practical.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, handrail, 2, left branch leg, 3, the chalk tube, 4, screw hinge, 5, right supporting leg, 6, spherical linkage, 7, magnet.
The specific embodiment
As shown in Figure 1, magnet board compasses of the present utility model, comprise handrail 1 and the left branch leg 2 and the right supporting leg 5 that are linked together by screw hinge 4, wherein the end of right supporting leg 5 is connected with magnet 7 by the spherical linkage 6 that can carry out 360 degree rotations, and the end of left branch leg 2 is connected with the chalk tube 3 that is used for fixing chalk.
During use, unclamp screw hinge earlier, regulate radius after, tighten the screws hinge, the fixedly subtended angle between left branch leg and the right supporting leg.Then magnet is adsorbed on the irony blackboard, gets final product with hand steered handrail rotation.Right supporting leg can be done 360 degree rotations by spherical linkage, and that draws and is circular continuous, clear.
Claims (1)
1. magnet board compasses comprise handrail and by left branch leg and right supporting leg that screw hinge links together, it is characterized in that: the end of right supporting leg is connected with magnet by the spherical linkages that can carry out 360 degree rotations.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220627381 CN203063417U (en) | 2012-11-26 | 2012-11-26 | Compasses for magnetic blackboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220627381 CN203063417U (en) | 2012-11-26 | 2012-11-26 | Compasses for magnetic blackboard |
Publications (1)
Publication Number | Publication Date |
---|---|
CN203063417U true CN203063417U (en) | 2013-07-17 |
Family
ID=48762237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 201220627381 Expired - Fee Related CN203063417U (en) | 2012-11-26 | 2012-11-26 | Compasses for magnetic blackboard |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN203063417U (en) |
-
2012
- 2012-11-26 CN CN 201220627381 patent/CN203063417U/en not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20131126 |