CN201736590U - Automatic chalk - Google Patents
Automatic chalk Download PDFInfo
- Publication number
- CN201736590U CN201736590U CN2010202687237U CN201020268723U CN201736590U CN 201736590 U CN201736590 U CN 201736590U CN 2010202687237 U CN2010202687237 U CN 2010202687237U CN 201020268723 U CN201020268723 U CN 201020268723U CN 201736590 U CN201736590 U CN 201736590U
- Authority
- CN
- China
- Prior art keywords
- chalk
- shell
- hole
- blackboard eraser
- automatic
- 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 an automatic chalk which belongs to teaching aids and mainly solves the problems that the exiting chalks can easily dirty hands when in use and finding of a blackboard eraser for erasing words is inconvenient when words are written incorrectly. The automatic chalk comprises a chalk body and is characterized in that the outer side of the chalk body is covered with a shell; the side wall of the shell is provided with a long-strip through hole which is provided with a slider; one end of the slider is protruded from the outer side of the through hole, and the other end of the slider passes through the through hole, is provided with a chalk fixing device and is connected with the chalk body; and the side wall of the shell is provided with the blackboard eraser with an outward blackboard. When in use, the chalk body is exposed from the shell in an appropriate length; hands are used for holding the shell to write so as to prevent fingers from being polluted by chalk ashes; words which are incorrectly written can be erased by the blackboard eraser on the shell at any time; therefore, the automatic chalk is convenient to use and improves efficiency.
Description
Technical field
The utility model relates to a kind of teaching aid, specifically a kind of automatic chalk.
Background technology
Chalk particularly uses very general in primary school, middle school and senior middle school in school, use the chalk head often occurs and throws out without care, cause great waste, the full classroom of dust flies, people arrest the hand skin that chalk writes for the people with hand also can cause certain damage, also can occur because inadvertent is write wrongly written character, and the situation that blackboard eraser can not find.
The utility model content
The purpose of this utility model is to provide a kind of automatic chalk, and this chalk can not cause damage to hand skin when using, and can wipe conveniently after wrongly writing, and has improved efficient.
The technical scheme in the invention for solving the technical problem is: automatic chalk, comprise the chalk body, it is characterized in that, the described chalk body outside is covered with a shell, described side wall of outer shell is provided with a strip through hole, described through hole is provided with a slide block, and described slide block one distal process goes out in the through hole outside, and the other end passes through hole and is provided with a chalk fixing device; On the sidewall of described shell, be provided with the outside blackboard eraser of a working face.
The beneficial effects of the utility model are: be provided with shell and blackboard eraser, during use, the chalk body exposed the shell appropriate length, hold shell and write, avoid the chalk ash pollution finger, write wrongly written character and can use the blackboard eraser on the shell to wipe conveniently, easy to use, improved efficient.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1 chalk body; 2 shells; 3 slide blocks; 4 blackboard erasers.
The specific embodiment
As shown in Figure 1.Automatically chalk comprises chalk body 1, and described chalk body 1 outside is covered with a shell 2, described shell 2 sidewalls are provided with a strip through hole, described through hole is provided with a slide block 3, and described slide block 3 one distal process go out in the through hole outside, and the other end passes through hole and is provided with a chalk fixing device; On the sidewall of described shell 2, be provided with the outside blackboard eraser of a working face 4.
During use, chalk body 1 is exposed shell 2 appropriate length, hold shell 2 and write, avoid the chalk ash pollution finger, write wrongly written character and can use the blackboard eraser 4 on the shell 2 to wipe conveniently, easy to use, improved efficient.
Claims (1)
1. automatic chalk, comprise the chalk body, it is characterized in that, the described chalk body outside is covered with a shell, described side wall of outer shell is provided with a strip through hole, described through hole is provided with a slide block, and described slide block one distal process goes out in the through hole outside, and the other end passes through hole and is provided with a chalk fixing device; On the sidewall of described shell, be provided with the outside blackboard eraser of a working face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202687237U CN201736590U (en) | 2010-07-23 | 2010-07-23 | Automatic chalk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202687237U CN201736590U (en) | 2010-07-23 | 2010-07-23 | Automatic chalk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201736590U true CN201736590U (en) | 2011-02-09 |
Family
ID=43551873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202687237U Expired - Fee Related CN201736590U (en) | 2010-07-23 | 2010-07-23 | Automatic chalk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201736590U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494330A (en) * | 2014-12-31 | 2015-04-08 | 苏州市职业大学 | Friction adjusting type ball-point cap |
| CN107020867A (en) * | 2016-02-02 | 2017-08-08 | 上海市格致中学 | A kind of intelligent distant control blackboard |
-
2010
- 2010-07-23 CN CN2010202687237U patent/CN201736590U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494330A (en) * | 2014-12-31 | 2015-04-08 | 苏州市职业大学 | Friction adjusting type ball-point cap |
| CN107020867A (en) * | 2016-02-02 | 2017-08-08 | 上海市格致中学 | A kind of intelligent distant control blackboard |
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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: 20110209 Termination date: 20110723 |