CN205468070U - Chalk sleeve - Google Patents
Chalk sleeve Download PDFInfo
- Publication number
- CN205468070U CN205468070U CN201620154516.6U CN201620154516U CN205468070U CN 205468070 U CN205468070 U CN 205468070U CN 201620154516 U CN201620154516 U CN 201620154516U CN 205468070 U CN205468070 U CN 205468070U
- Authority
- CN
- China
- Prior art keywords
- chalk
- shell
- propeller
- spring
- fixer
- 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 belongs to teaching aids relates to a chalk sleeve, including shell, chalk propeller, spring, fixer and locating lever, the shell is cylindrical hollow tube, the shell top is sealed, the below is equipped with the chalk access & exit, the top is equipped with the chalk propeller in the shell, install inner spring and outer spring in the chalk propeller, chalk propeller lower extreme contacts with the chalk that inserts in the shell, chalk propeller one side is equipped with the fixer, the fixer passes through the spring to be fixed on the chalk propeller outside, aperture card on the chalk propeller is passed through on the outer spring to fixer one end, install and draw forth the shell outside at the button of the fixer other end, chalk propeller opposite side is equipped with the locating lever, the locating lever passes through the spring and fixes downside in the shell, the iron sheet of locating lever upper end passes through aperture card on the chalk propeller on the outer spring, the shell outside is drawn forth to the locating lever lower extreme. The utility model has the characteristics of simple structure, with low costs, environmental protection, reduce chalk dust etc.
Description
Technical field
This utility model belongs to tutor auxiliary platform equipment, relates to a kind of novel chalk casing.
Background technology
Along with China's economic development, educational undertaking and teaching equipment gradually modernize.In big city, the traditional blackboard of school is replaced by electronic projection apparatus, substantially increases quality of instruction.But, still using traditional blackboard in China border district and country school, write with chalk word.Using chalk when writing, continue to write relatively difficult the most in short-term when chalk is remaining, therefore major part chalk can not be fully utilized and be thrown away.The most not only waste ample resources but also pollute environment.
Summary of the invention
The purpose of this utility model is to solve the problems referred to above, it is provided that a kind of novel chalk casing, simple in construction, low cost, can make full use of chalk protection environment and reduces the novel chalk casing of chalk dust.
The purpose of this utility model is achieved in that a kind of novel chalk casing, including shell, chalk propeller, spring, holder and location bar；Shell is cylinder type hollow pipe, close above shell, lower section is provided with chalk gateway, chalk propeller it is arranged in shell, inner spring and outer spring are installed in chalk propeller, chalk propeller lower end contacts with the chalk being inserted in shell, chalk propeller side is provided with holder, holder is fixed on outside chalk propeller by spring, holder one end is stuck on outer spring by the aperture on chalk propeller, the button being arranged on the holder other end is drawn out to enclosure, chalk propeller opposite side is provided with location bar, location bar is fixed on shell inner underside by spring, the iron plate of bar upper end, location is stuck on outer spring by the aperture on chalk propeller, enclosure is drawn in bar lower end, location；Outer side is provided with ferromagnetic sheet.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is this utility model internal structure schematic diagram.
Detailed description of the invention
As shown in drawings, a kind of novel chalk casing, including shell, chalk propeller, spring, holder and location bar.
Shell 1 is cylinder type hollow pipe, closes above shell 1, and lower section is provided with chalk gateway 11, is arranged over chalk propeller 2 in shell 1.
Inner spring 3 is installed in chalk propeller 2,4 and outer spring 5,6, chalk propeller 2 lower end be inserted into shell 1 in chalk 12 contact.
Chalk propeller 2 side is provided with holder 13, holder 13 is fixed on outside chalk propeller 2 by spring 15, holder 13 one end is stuck on outer spring 6 by the aperture on chalk propeller 2, and the button 14 being arranged on holder 13 other end is drawn out to outside shell 1.
Chalk propeller 2 opposite side is provided with location bar 8, and location bar 8 is fixed on shell 1 inner underside by spring 9, and the iron plate 7 of bar 8 upper end, location is stuck on outer spring 5 by the aperture on chalk propeller 2, and bar lower end 10, location is drawn outside shell 1.
Ferromagnetic sheet 16 it is provided with outside shell 1.
During use, chalk chalk gateway 11 below shell 1 is inserted in shell 1.At this moment inner spring 3,4 and outer spring 5,6 all compressed, localizer 13 blocks main outer spring 6 and prevents chalk propeller 2 from being released by chalk 12.When chalk 12 is gradually consumed, when chalk 12 top contacts with blackboard, bar lower end 10, location contacts with blackboard, up promote location bar 8, at this moment the iron plate 7 of bar 8 upper end, location unclamps outer spring 6, pinning the button 14 on localizer 13, propeller 2 is by chalk 12 toward extrapolation, and chalk 12 is from a gateway 11 out simultaneously.Release button 14, outer spring 5,6 are positioned device 13 blocks with location bar 8.New chalk is reinstalled after making to be finished a chalk.With the ferromagnetic sheet 16 on outside shell 1, chalk sleeve can be attached on irony blackboard or blackboard edge, be convenient to use.
Claims (2)
1. a novel chalk casing, including shell, chalk propeller, spring, holder and location bar；nullIt is characterized in that: shell (1) is cylinder type hollow pipe，Shell (1) top is closed，Lower section is provided with chalk gateway (11)，Chalk propeller (2) it is arranged in shell (1)，Chalk propeller is provided with inner spring (3 in (2)，4) and outer spring (5，6)，Chalk propeller (2) lower end contacts with being inserted into shell (1) interior chalk (12)，Chalk propeller (2) side is provided with holder (13)，Holder (13) is fixed on chalk propeller (2) outside by spring (15)，Holder (13) one end is stuck on outer spring (6) by the aperture on chalk propeller (2)，The button (14) being arranged on holder (13) other end is drawn out to shell (1) outside，Chalk propeller (2) opposite side is provided with location bar (8)，Location bar (8) is fixed on shell (1) inner underside by spring (9)，The iron plate (7) of bar (8) upper end, location is stuck on outer spring (5) by the aperture on chalk propeller (2)，Shell (1) outside is drawn in bar lower end, location (10).
A kind of novel chalk casing the most according to claim 1, it is characterised in that: shell (1) outside is provided with ferromagnetic sheet (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620154516.6U CN205468070U (en) | 2016-03-01 | 2016-03-01 | Chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620154516.6U CN205468070U (en) | 2016-03-01 | 2016-03-01 | Chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205468070U true CN205468070U (en) | 2016-08-17 |
Family
ID=56657962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620154516.6U Expired - Fee Related CN205468070U (en) | 2016-03-01 | 2016-03-01 | Chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205468070U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437667A (en) * | 2018-03-30 | 2018-08-24 | 芜湖众维教研仪器研发有限责任公司 | A kind of multifunctional blackboard eraser dust-extraction unit |
-
2016
- 2016-03-01 CN CN201620154516.6U patent/CN205468070U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437667A (en) * | 2018-03-30 | 2018-08-24 | 芜湖众维教研仪器研发有限责任公司 | A kind of multifunctional blackboard eraser dust-extraction unit |
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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: 20160817 Termination date: 20170301 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |