CN204567050U - A kind of blackboard eraser - Google Patents
A kind of blackboard eraser Download PDFInfo
- Publication number
- CN204567050U CN204567050U CN201520262444.2U CN201520262444U CN204567050U CN 204567050 U CN204567050 U CN 204567050U CN 201520262444 U CN201520262444 U CN 201520262444U CN 204567050 U CN204567050 U CN 204567050U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- inner ring
- blackboard eraser
- outer shroud
- driven
- 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
Links
- 239000000428 dust Substances 0.000 abstract description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 1
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a kind of blackboard eraser, comprises control section and is arranged at the erasing part of its periphery, and described control section comprises inner ring and circumference and is distributed in some active permanent magnets inside it, and inner ring front is provided with handle; Described erasing part comprises outer shroud and circumference and is distributed in driven permanent magnet between inner ring and outer shroud, and the driven permanent magnet back side is fixed with felt; The synonyms pole end of described active permanent magnet and driven permanent magnet is close to each other.The utility model structure is simple, designs ingenious, can be conveniently clean by blackboard eraser, time saving and energy saving, avoids chalk dust to be stained with to hand, safety and sanitation simultaneously.
Description
Technical field
The utility model relates to a kind of teaching appliance, is specifically related to a kind of blackboard eraser.
Background technology
At present, blackboard eraser is used by vast teaching person, but existing blackboard eraser technology content is lower, is all made up of plank and felt.Need to hold blackboard eraser in the process erased the board and firmly wipe vestige on blackboard, efficiency is lower, in addition, is easy to chalk dust to be stained with to hand.
Summary of the invention
For the problems referred to above, the utility model provides a kind of to be avoided touching with one's hand, safety and sanitation and time saving and energy saving blackboard eraser.
For solving the problem, the technical scheme that the utility model is taked is: a kind of blackboard eraser, comprise control section and be arranged at the erasing part of its periphery, described control section comprises inner ring and circumference and is distributed in some active permanent magnets inside it, and inner ring front is provided with handle; Described erasing part comprises outer shroud and circumference and is distributed in driven permanent magnet between inner ring and outer shroud, and the driven permanent magnet back side is fixed with felt; The synonyms pole end of described active permanent magnet and driven permanent magnet is close to each other.Completed the rotation of the inner ring being provided with initiatively permanent magnet by joystick, attract each other according to synonyms pole, drive the outer shroud being provided with driven permanent magnet to do rotating in same direction, utilize the felt being fixed on the driven permanent magnet back side that blackboard eraser is clean.
For the ease of controlling the active force initiatively between permanent magnet and driven permanent magnet, described active permanent magnet and the pole orientation of driven permanent magnet are arranged along the radial direction of inner ring and outer shroud respectively.
In order to make initiatively permanent magnet and driven permanent magnet one_to_one corresponding, described active permanent magnet is equal with driven permanent magnet quantity.
Press close to blackboard for the ease of controlling outer shroud, described inner ring and outer shroud link together.
In order to make the active force initiatively between permanent magnet and driven permanent magnet the strongest, described active permanent magnet is corresponding with driven permanent magnet distributing position.
The utility model structure is simple, designs ingenious, can be conveniently clean by blackboard eraser, time saving and energy saving, avoids chalk dust to be stained with to hand, safety and sanitation simultaneously.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model;
Fig. 2 is rearview of the present utility model;
Wherein, 1, outer shroud, 2, inner ring, 3, initiatively permanent magnet, 4, driven permanent magnet, 5, handle, 6, felt.
Detailed description of the invention
A kind of blackboard eraser, comprise control section and be arranged at the erasing part of its periphery, described control section comprises inner ring 2 and circumference and is distributed in inside it four initiatively permanent magnets 3, and initiatively the pole orientation of permanent magnet 3 is arranged along inner ring 2 radial direction, and inner ring 2 front is provided with handle 5; Described erasing part comprises outer shroud 1 and circumference and is distributed in four driven permanent magnets 4 between inner ring 2 and outer shroud 1, and the pole orientation of driven permanent magnet 4 is arranged along outer shroud 1 radial direction, and driven permanent magnet 4 back side is fixed with felt 6; Described inner ring 2 links together with outer shroud 1, and described active permanent magnet 3 is corresponding with driven permanent magnet 4 distributing position, and the synonyms pole end of two permanent magnets is close to each other, and as shown in Figure 1, initiatively the N of permanent magnet 3 is extremely just to the S pole of driven permanent magnet 4.
Claims (5)
1. a blackboard eraser, is characterized in that: comprise control section and be arranged at the erasing part of its periphery, and described control section comprises inner ring and circumference and is distributed in some active permanent magnets inside it, and inner ring front is provided with handle; Described erasing part comprises outer shroud and circumference and is distributed in driven permanent magnet between inner ring and outer shroud, and the driven permanent magnet back side is fixed with felt; The synonyms pole end of described active permanent magnet and driven permanent magnet is close to each other.
2. blackboard eraser according to claim 1, is characterized in that: described active permanent magnet and the pole orientation of driven permanent magnet are arranged along the radial direction of inner ring and outer shroud respectively.
3. blackboard eraser according to claim 1, is characterized in that: described active permanent magnet is equal with driven permanent magnet quantity.
4. blackboard eraser according to claim 1, is characterized in that: described inner ring and outer shroud link together.
5. blackboard eraser according to claim 3, is characterized in that: described active permanent magnet is corresponding with driven permanent magnet distributing position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262444.2U CN204567050U (en) | 2015-04-28 | 2015-04-28 | A kind of blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262444.2U CN204567050U (en) | 2015-04-28 | 2015-04-28 | A kind of blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204567050U true CN204567050U (en) | 2015-08-19 |
Family
ID=53859732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520262444.2U Expired - Fee Related CN204567050U (en) | 2015-04-28 | 2015-04-28 | A kind of blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204567050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112971512A (en) * | 2019-12-13 | 2021-06-18 | Seb公司 | Electric cooking appliance for cooking food comprising a stirring blade |
-
2015
- 2015-04-28 CN CN201520262444.2U patent/CN204567050U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112971512A (en) * | 2019-12-13 | 2021-06-18 | Seb公司 | Electric cooking appliance for cooking food comprising a stirring blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20160428 |