CN202319422U - Teaching chalk protection sleeve - Google Patents
Teaching chalk protection sleeve Download PDFInfo
- Publication number
- CN202319422U CN202319422U CN2011204832225U CN201120483222U CN202319422U CN 202319422 U CN202319422 U CN 202319422U CN 2011204832225 U CN2011204832225 U CN 2011204832225U CN 201120483222 U CN201120483222 U CN 201120483222U CN 202319422 U CN202319422 U CN 202319422U
- Authority
- CN
- China
- Prior art keywords
- chalk
- protective sleeve
- teaching
- protection sleeve
- sleeve
- 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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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The utility model discloses a teaching chalk protection sleeve which comprises a protection sleeve body of which one end is provided with an opening. The teaching chalk protection sleeve is characterized in that a chalk sleeve for containing a chalk is arranged in a cavity of the protection sleeve body; the chalk sleeve is in threaded connection with the protection sleeve body; and the other end of the protection sleeve body is provided with a hole through which one end of the chalk sleeve can extend out of the protection sleeve body. The teaching chalk protection sleeve has a simple structure and a reasonable design. The length of the chalk can be regulated as required. The teaching chalk protection sleeve is convenient for a teacher to hold and write and takes a certain protection effect. The waste is reduced and the teaching efficiency can be improved.
Description
Technical field
The utility model relates to the teaching aid technical field, relates in particular to a kind of teaching and uses the chalk protective sleeve.
Background technology
At present, chalk is one of teaching aid indispensable in the teaching process, is for general on the blackboard and writes, thereby the student is explained knowledge; The teacher need write a large amount of literal at school the time on blackboard, and generally hand-held chalk is write, and finger contacts long so direct contact with palm is direct with chalk is surperficial like this; Make skin directly accept the erosion of chalk dust, health impacted, and if firmly excessive; Chalk is fractureed, and the back chalk that fractures is short and small, and the teacher is not easy to hold; Influence the teacher and write, not only cause the waste of chalk, and bring burden to the teacher.
Summary of the invention
It is a kind of simple in structure, reasonable in design that the purpose of the utility model is to provide, and can regulate the length of chalk as required, makes things convenient for the teacher to hand and write, and play the certain protection effect, can improve the teaching of efficiency of teaching and use the chalk protective sleeve.
In order to reach above purpose; The technical scheme that the utility model adopted is: the chalk protective sleeve is used in teaching; Comprise that an end has the protective sleeve body of opening; It is characterized in that: be provided with the chalk sleeve that is used for the splendid attire chalk in the cavity of said protective sleeve body, said chalk sleeve is threaded with said protective sleeve body, and the other end of said protective sleeve body is provided with and is used to make an end of said chalk sleeve to stretch out this external hole of protective sleeve.
The utility model is also implemented through following measure: said chalk sleeve comprises the body that is used for the splendid attire chalk and is used to rotate the dwang that said body rotates in said protective sleeve body that said dwang stretches out in described hole.
The body of said chalk sleeve is provided with the holding screw that is used for fixing chalk.
The beneficial effect of the utility model is: simple in structure, reasonable in design, the length that can regulate chalk as required makes things convenient for the teacher to hand and writes, and plays the certain protection effect, has reduced waste, and can improve efficiency of teaching.
Description of drawings
Accompanying drawing is the structural representation of the utility model.
The specific embodiment
Shown in accompanying drawing; The chalk protective sleeve is used in teaching; Comprise that an end has the protective sleeve body 1 of opening; Be provided with the chalk sleeve that is used for the splendid attire chalk in the cavity of said protective sleeve body 1, said chalk sleeve is threaded with said protective sleeve body 1, and the other end of said protective sleeve body 1 is provided with and is used to make an end of said chalk sleeve to stretch out the hole 2 outside the protective sleeve body 1.
Said chalk sleeve comprises the body 3 that is used for the splendid attire chalk and is used to rotate the dwang 4 that said body 3 rotates in said protective sleeve body 1 that said dwang 4 stretches out in described hole 2.Be convenient to regulate the length that chalk stretches out through dwang 4.
The body 3 of said chalk sleeve is provided with the holding screw 5 that is used for fixing chalk.Chalk is packed in the body 3, and it is fixed through holding screw 5, easy to use.
During use, earlier chalk is packed in the body 3, and it is fixed through holding screw 5; Through rotation dwang 4 body 3 is rotated in protective sleeve body 1 then; Because chalk sleeve and protective sleeve body 1 for being threaded, in rotation process, make body 3 move upward with respect to protective sleeve body 1 like this; And the openend that makes body 3 stretches out protective sleeve body 1; Thereby make chalk expose protective sleeve body 1, stretch out suitable length and get final product, thereby make things convenient for the hand-held protective sleeve body 1 of teacher to write.And the duplicate protection through protective sleeve body 1 and body 3 prevents that chalk from use fractureing, and has reduced waste, and has effectively protected hand not to be etched, and has guaranteed teacher's health.
The utility model is simple in structure, and is reasonable in design, can regulate the length of chalk as required, makes things convenient for the teacher to hand and writes, and play the certain protection effect, reduced waste, and can improve efficiency of teaching.
Claims (3)
1. the chalk protective sleeve is used in teaching; Comprise that an end has the protective sleeve body (1) of opening; It is characterized in that: be provided with the chalk sleeve that is used for the splendid attire chalk in the cavity of said protective sleeve body (1); Said chalk sleeve is threaded with said protective sleeve body (1), and the other end of said protective sleeve body (1) is provided with and is used to make an end of said chalk sleeve to stretch out the outer hole (2) of protective sleeve body (1).
2. the chalk protective sleeve is used in teaching according to claim 1; It is characterized in that: said chalk sleeve; Comprise the body (3) that is used for the splendid attire chalk and be used to and rotate the dwang (4) that said body (3) rotates in said protective sleeve body (1), said dwang (4) stretches out in described hole (2).
3. the chalk protective sleeve is used in teaching according to claim 2, it is characterized in that: the body of said chalk sleeve (3) is provided with the holding screw (5) that is used for fixing chalk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204832225U CN202319422U (en) | 2011-11-29 | 2011-11-29 | Teaching chalk protection sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204832225U CN202319422U (en) | 2011-11-29 | 2011-11-29 | Teaching chalk protection sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202319422U true CN202319422U (en) | 2012-07-11 |
Family
ID=46431414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204832225U Expired - Fee Related CN202319422U (en) | 2011-11-29 | 2011-11-29 | Teaching chalk protection sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202319422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861429A (en) * | 2018-08-28 | 2020-03-06 | 成都友谊教学设备有限公司 | Chalk sleeve for teaching |
-
2011
- 2011-11-29 CN CN2011204832225U patent/CN202319422U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861429A (en) * | 2018-08-28 | 2020-03-06 | 成都友谊教学设备有限公司 | Chalk sleeve for teaching |
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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: 20120711 Termination date: 20121129 |