CN202098161U - Popping type chalk cover - Google Patents
Popping type chalk cover Download PDFInfo
- Publication number
- CN202098161U CN202098161U CN2011201939593U CN201120193959U CN202098161U CN 202098161 U CN202098161 U CN 202098161U CN 2011201939593 U CN2011201939593 U CN 2011201939593U CN 201120193959 U CN201120193959 U CN 201120193959U CN 202098161 U CN202098161 U CN 202098161U
- Authority
- CN
- China
- Prior art keywords
- chalk
- spring
- cover
- popping
- popping type
- 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 relates to a popping type chalk cover which comprises a cover body (4) the top part of which is provided with an opening; the inner bottom part of the cover body (4) is connected with a spring (5); the top end of the spring (5) is fixedly connected with a top block (6); a limiting hole (2) the inside and the outside of which are communicated is arranged on the side wall of the cover body (4); the popping type chalk cover also comprises a limiting rod (3) inserted into the limiting hole (2); and the inner end of the limiting rod (3) is contacted with the spring (5). As the chalk is arranged in the chalk cover and the inserting position of the limiting rod in the spring is adjusted to adjust the stretching length of the chalk from the chalk cover, the chalk is prevented from breaking simultaneously when fingers are protected. The popping type chalk cover has a simple structure and is convenient to use.
Description
Technical field
The utility model relates to a kind of chalk sleeve.
Background technology
The mode that the schools in the most areas of present China adopt chalks on blackboard, to write is taught; Because the raw material of chalk is a lime, long-term contact can burn one's fingers, and unhygienic; And because chalk is too crisp; Chalk fractures easily when writing and placing at ordinary times, much is difficult for the chalk head write and produce, and reduces the utilization rate of chalk.
The utility model content
The utility model technical problem to be solved is, a kind of Pop-up chalk sleeve is provided, and chalk does not directly contact with finger during writing on the blackboard, and chalk can freely be stretched within it, makes not frangible of chalk.
It is following that the utility model solves the problems of the technologies described above the technical scheme that is adopted:
A kind of Pop-up chalk sleeve, comprise that the top has the body of opening, is characterized in that: the inner bottom part of said body is connected with spring; The top of spring is fixedly connected with jacking block; The spacing hole that is interlinked to the outside in offering on the sidewall of said body; Also comprise the gag lever post that is plugged in the described spacing hole, the inner of gag lever post contacts with described spring.
The good effect of the utility model is:
This device is through being arranged on chalk in the chalk sleeve, and through regulating the insertion position of gag lever post in spring, regulates chalk from the chalk sleeve extension elongation, thereby in the protection finger, prevents fractureing of chalk, and is simple in structure, easy to use.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Further specify the utility model below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1; The utility model comprises that the top has the body 4 of opening, and the inner bottom part of said body 4 is connected with spring 5, and the top of spring 5 is fixedly connected with jacking block 6; The spacing hole 2 that is interlinked to the outside in offering on the sidewall of said body 4; Also comprise gag lever post 3, the inner of said gag lever post 3 is stretched into from spacing hole 2, and limits the collapsing length of said spring 5.
During use, chalk 1 is inserted from the opening of body 4, jacking block 6 and chalk 1 are joined, the collapsing length that passes through gag lever post 3 regulating springs 5 according to the length of chalk 1 gets final product.
Claims (1)
1. Pop-up chalk sleeve, comprise that the top has the body of opening (4), is characterized in that: the inner bottom part of said body (4) is connected with spring (5); The top of spring (5) is fixedly connected with jacking block (6); The spacing hole (2) that is interlinked to the outside in offering on the sidewall of said body (4); Also comprise the gag lever post (3) that is plugged in the described spacing hole (2), the inner of gag lever post (3) contacts with described spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201939593U CN202098161U (en) | 2011-05-28 | 2011-05-28 | Popping type chalk cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201939593U CN202098161U (en) | 2011-05-28 | 2011-05-28 | Popping type chalk cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202098161U true CN202098161U (en) | 2012-01-04 |
Family
ID=45384191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201939593U Expired - Fee Related CN202098161U (en) | 2011-05-28 | 2011-05-28 | Popping type chalk cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202098161U (en) |
-
2011
- 2011-05-28 CN CN2011201939593U patent/CN202098161U/en not_active Expired - Fee Related
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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: 20120104 Termination date: 20120528 |