CN202608355U - Ruler-compass dual-purpose cyclograph capable of fixing axis by utilizing magnet - Google Patents
Ruler-compass dual-purpose cyclograph capable of fixing axis by utilizing magnet Download PDFInfo
- Publication number
- CN202608355U CN202608355U CN 201220136878 CN201220136878U CN202608355U CN 202608355 U CN202608355 U CN 202608355U CN 201220136878 CN201220136878 CN 201220136878 CN 201220136878 U CN201220136878 U CN 201220136878U CN 202608355 U CN202608355 U CN 202608355U
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- CN
- China
- Prior art keywords
- ruler
- cyclograph
- groove
- magnet
- dual
- 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 ruler-compass dual-purpose cyclograph capable of fixing an axis by utilizing a magnet. The ruler-compass dual-purpose cyclograph mainly comprises a ruler provided with a groove at the middle, a fixing shaft provided with a magnet, and a moving block sleeved with a chalk. A round hole is punched on one end of the ruler, the fixing shaft provided with the magnet is provided, so that one end of the cyclograph can be absorbed on a steel blackboard. A groove is arranged in the middle of the ruler, and two corresponding sides of the groove are respectively made to a waved tooth form. The groove is provided with the moving block, and the moving block is provided with an elastic control bolt for controlling the moving block to slide or fasten on the groove randomly. The moving block is provided with a round hole inserted with the chalk. The ruler-compass dual-purpose cyclograph, provided by the utility model, has the advantages that: the cyclograph is absorbed on the blackboard through magnetic force, so that the cyclograph can be used for drawing a straight line and a circle, and a radius of the circle can be mastered.
Description
Technical field:
Cyclograph is used in a kind of teaching, is used on blackboard, can drawing straight line and can draws round educational aid again.
Technical background:
Compasses for teaching commonly used at present is a herringbone, and fixedly an end in the center of circle is a needle point, is prone to stab bad blackboard, and folds inconvenient operation, is difficult to hold picture radius of a circle length again.
Summary of the invention:
The utility model invention is a kind of with the fixing dual-purpose cyclograph of ruler in axle center of magnet, mainly is made up of the fixed axis of the ruler of groove, carry magnet and movable block three parts of overlapping chalk the centre.One end of ruler is got circular hole, and a fixed axis is installed.One end of fixed axis is fixed a magnet, and an end of cyclograph can be adsorbed on the steel blackboard.A groove is left in the centre of ruler, and wavy profile of tooth is processed on the corresponding both sides of groove respectively.A movable block is installed on groove, the movable bolt of band elasticity control strip is housed on the movable block, can control that movable block slides or fix on groove.Circular hole is arranged on the movable block, be used to insert chalk.One side in hole has the arc card, and card blocks chalk through the power of spring.
The beneficial effect of the utility model is: lean on magnetic force that cyclograph is adsorbed on the blackboard, can draw straight line and can draw circle again, and can grasp the picture radius of a circle.
Description of drawings:
Fig. 1 is with the fixing stereogram of the dual-purpose cyclograph of ruler in axle center of magnet
Fig. 2 is with the fixing vertical view of the dual-purpose cyclograph of ruler in axle center of magnet
Fig. 3 is with the fixing side cutaway view of the dual-purpose cyclograph of ruler in axle center of magnet
Fig. 4 is movable bolt and the graph of a relation of the groove in the ruler in the movable block
In above-mentioned each figure, 1 fixed axis, 2 rulers, 3 grooves, 4 movable blocks, 5 insert the circular hole of chalk, 6 magnet, 7 chalks, 8 movable bolts
The specific embodiment:
With the fixing dual-purpose cyclograph of ruler in axle center of magnet, mainly form by the ruler of groove, the rotating shaft of carry magnet and movable block three parts of cover chalk by the centre.One end of ruler 2 is got circular hole, and a fixed axis 1 is installed.A magnet 6 is adorned in the lower end of fixed axis, and an end of cyclograph can be adsorbed on the steel blackboard.A groove 3 is left in the centre of ruler, and wavy profile of tooth is processed on the corresponding both sides of groove respectively.A movable block 4 is installed on groove, the movable bolt 8 that band plays control strip is housed on the movable block, can control that movable block slides or fix on groove.Be useful on the circular hole 5 of inserting chalk 7 on the movable block.
Claims (2)
1. one kind with the fixing dual-purpose cyclograph of ruler in axle center of magnet; It is characterized in that: mainly form by the ruler of groove, the fixed axis of carry magnet and movable block three parts of cover chalk by the centre; One end of ruler is got circular hole; The fixed rotating shaft of a carry magnet is installed, an end of cyclograph can be adsorbed on the steel blackboard.
2. according to claim 1 with the fixing dual-purpose cyclograph of ruler in axle center of magnet; It is characterized in that: a groove is left in the centre of ruler, and wavy profile of tooth is processed on the corresponding both sides of groove respectively, and a movable block is installed on groove; The control bolt of band elasticity control strip is housed on the movable block; Can control that movable block slides or fixing on groove, circular hole is arranged on the movable block, be used for inserting chalk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220136878 CN202608355U (en) | 2012-04-02 | 2012-04-02 | Ruler-compass dual-purpose cyclograph capable of fixing axis by utilizing magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220136878 CN202608355U (en) | 2012-04-02 | 2012-04-02 | Ruler-compass dual-purpose cyclograph capable of fixing axis by utilizing magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202608355U true CN202608355U (en) | 2012-12-19 |
Family
ID=47342082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220136878 Expired - Fee Related CN202608355U (en) | 2012-04-02 | 2012-04-02 | Ruler-compass dual-purpose cyclograph capable of fixing axis by utilizing magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202608355U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370844A (en) * | 2019-08-17 | 2019-10-25 | 李爱弟 | Simple compasses ruler |
-
2012
- 2012-04-02 CN CN 201220136878 patent/CN202608355U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370844A (en) * | 2019-08-17 | 2019-10-25 | 李爱弟 | Simple compasses ruler |
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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: 20121219 Termination date: 20130402 |