CN203077954U - Chalk cover capable of rotating - Google Patents
Chalk cover capable of rotating Download PDFInfo
- Publication number
- CN203077954U CN203077954U CN 201220757053 CN201220757053U CN203077954U CN 203077954 U CN203077954 U CN 203077954U CN 201220757053 CN201220757053 CN 201220757053 CN 201220757053 U CN201220757053 U CN 201220757053U CN 203077954 U CN203077954 U CN 203077954U
- Authority
- CN
- China
- Prior art keywords
- chalk
- sleeve
- inner sleeve
- periphery
- screw sheel
- 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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Abstract
The utility model discloses a chalk cover capable of rotating, and belongs to chalk covers. A chalk support is mounted in an inner sleeve. A spiral sleeve is mounted on the periphery of the inner sleeve in a sleeved mode. A spiral groove is formed in the inner wall of the spiral sleeve and matched with the chalk support to enable the chalk support to move up and down in the inner sleeve. An outer sleeve is mounted on the periphery of the spiral sleeve in a sleeved mode. A sponge strip is arranged on the periphery of the outer sleeve. Stepped edges are formed at the bottom of the inner sleeve and matched with the bottom end of the spiral sleeve. The chalk cover capable of rotating has the advantages that a piece of chalk can be placed in the chalk cover, the length of the chalk is adjusted through rotation, a hand of a teacher does not need to touch the chalk and cannot be contaminated by lime, and therefore the skin of the hand of the teacher is protected.
Description
Technical field
The utility model belongs to a kind of chalk sleeve, particularly a kind of rotatable chalk sleeve.
Background technology
At present, teacher will use chalk to write a large amount of writings on the blackboard at school the time, because chalk is to be made by lime, adversary's corrosivity is very strong, one class gets off, teacher has sticked the chalk foam on hand, and more piece is levied, and teacher's hand can be corroded by the chalk foam, time one is long, teacher's hand can be very dry, and What is more, can be burnt skin.
The utility model content
The purpose of this utility model is to overcome above-mentioned defective, and a kind of rotatable chalk sleeve is provided, and it can be placed on chalk in the chalk sleeve, regulates chalk length by rotation, and teacher's hand need not be run into chalk, can the lime dirt, and protection teacher hand skin.
The purpose of this utility model is achieved through the following technical solutions: a kind of rotatable chalk sleeve, it is characterized in that: it comprises inner sleeve, chalk holder, screw sheel, urceolus, the chalk holder is installed in the inner sleeve, screw sheel is sleeved on the periphery of inner sleeve, the inwall of screw sheel is provided with the chalk holder and works in coordination so that the helicla flute that the chalk holder moves up and down in inner sleeve, urceolus is sleeved on the periphery of screw sheel, the outer sleeve periphery is provided with sponge strip, and the bottom of inner sleeve forms the ladder edge that cooperates with the screw sheel bottom.
Advantage of the present utility model and beneficial effect are: chalk can be placed in the chalk sleeve, regulate chalk length by rotation, teacher's hand need not be run into chalk, can the lime dirt, and protection teacher hand skin.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an exploded view of the present utility model.
Wherein: 1-inner sleeve, the holder of 2-chalk, 3-screw sheel, 4-urceolus, 5-helicla flute, 6-ladder edge, 7-sponge strip.
The specific embodiment
Embodiment: as shown in the figure, a kind of rotatable chalk sleeve, it comprises inner sleeve 1, chalk holder 2, screw sheel 3, urceolus 4, chalk holder 2 is installed in the inner sleeve 1, screw sheel 3 is sleeved on the periphery of inner sleeve 1, the inwall of screw sheel 3 is provided with chalk holder 2 and works in coordination so that the helicla flute 5 that chalk holder 2 moves up and down in inner sleeve 1, urceolus 4 is sleeved on the periphery of screw sheel 3, the outer sleeve periphery is provided with sponge strip 7, and the bottom of inner sleeve 1 forms the ladder edge 6 that cooperates with screw sheel 3 bottoms.
Claims (1)
1. rotatable chalk sleeve, it is characterized in that: it comprises inner sleeve, chalk holder, screw sheel, urceolus, the chalk holder is installed in the inner sleeve, screw sheel is sleeved on the periphery of inner sleeve, the inwall of screw sheel is provided with the chalk holder and works in coordination so that the helicla flute that the chalk holder moves up and down in inner sleeve, urceolus is sleeved on the periphery of screw sheel, and the outer sleeve periphery is provided with sponge strip, and the bottom of inner sleeve forms the ladder edge that cooperates with the screw sheel bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220757053 CN203077954U (en) | 2012-12-31 | 2012-12-31 | Chalk cover capable of rotating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220757053 CN203077954U (en) | 2012-12-31 | 2012-12-31 | Chalk cover capable of rotating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203077954U true CN203077954U (en) | 2013-07-24 |
Family
ID=48823822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220757053 Expired - Fee Related CN203077954U (en) | 2012-12-31 | 2012-12-31 | Chalk cover capable of rotating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203077954U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098033A (en) * | 2016-08-04 | 2016-11-09 | 肖力群 | A kind of panpipes |
-
2012
- 2012-12-31 CN CN 201220757053 patent/CN203077954U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098033A (en) * | 2016-08-04 | 2016-11-09 | 肖力群 | A kind of panpipes |
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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: 20130724 Termination date: 20131231 |