CN201415550Y - Chalk barrel - Google Patents
Chalk barrel Download PDFInfo
- Publication number
- CN201415550Y CN201415550Y CN2009200846039U CN200920084603U CN201415550Y CN 201415550 Y CN201415550 Y CN 201415550Y CN 2009200846039 U CN2009200846039 U CN 2009200846039U CN 200920084603 U CN200920084603 U CN 200920084603U CN 201415550 Y CN201415550 Y CN 201415550Y
- Authority
- CN
- China
- Prior art keywords
- chalk
- screw
- barrel
- utility
- model
- 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 relates to a realia, in particular to a chalk barrel for solving the technical problem that when the user usees the chalk to write, the hands can be easily dirtied and the user can break the chalk with a little strength. The chalk barrel of the utility model consists of a barrel casing and a screw, wherein the screw is connected with the barrel casing through a screw hole arranged on the surface of the barrel casing; and the diameter of the barrel casing is slightly more than that of the chalk. The chalk barrel of the utility model can prevent the chalk dust from dirtying thefingers so that the chalk cannot be easily broken, and is simple and practicable.
Description
Technical field
The utility model relates to realia, a kind of specifically chalk tube.
Technical background
Chalk is convenient, economical because of it in teaching, and is subjected to being extensive use of of teachers and students.But people are when using chalk, normally directly arrest chalk with finger and write, and finger is made dirty easily like this, and chalk can break when a little firmly writing, and causes waste.
Summary of the invention
The purpose of this utility model provides a kind of chalk tube, solves the hand of making dirty easily when people write with chalk, and the technical problem of the chalk that a little firmly will fracture.
In order to address the above problem, technical solution adopted in the utility model is:
It is made up of jacket casing and screw, and wherein screw is connected with jacket casing by being located at the screw on the jacket casing face, and described jacket casing slightly larger in diameter is in the chalk diameter.
Above-mentioned screw is preferably selected flat screw for use.
Advantage of the present utility model is: can prevent the chalk dust finger of making dirty, make chalk be not easy fracture, and simple.
Description of drawings
Accompanying drawing is the structural representation of a kind of chalk tube of the utility model:
Among the figure: the flat screw of 1-, 2-jacket casing, 3-chalk.
The specific embodiment
Below in conjunction with accompanying drawing a kind of chalk tube of the utility model is described in further detail:
As shown in the figure, the utility model is made up of a jacket casing 2 and a flat screw 1.Be provided with a screw nearby for 2 mouthfuls at sleeve, flat screw 1 inserts in the screw, rotates flat screw and can make its inside and outside moving.
The utility model should outwards be twisted screw earlier in use, and chalk is inserted in the jacket casing, and chalk inserts the length of jacket casing and regulates according to individual's custom, at last screw is inwardly twisted, to fix chalk.
To note not staying oversize chalk outside when using the utility model, like this chalk frangibility when writing; What screw can not be twisted too tightly can not be too loose, otherwise can squeeze off chalk or make the chalk landing.
Claims (2)
1. chalk tube, it is made up of jacket casing and screw, it is characterized in that: screw is connected with jacket casing by being located at the screw on the sleeve section, and described jacket casing slightly larger in diameter is in the chalk diameter.
2. a kind of chalk tube as claimed in claim 1 is characterized in that: described screw is flat screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200846039U CN201415550Y (en) | 2009-03-30 | 2009-03-30 | Chalk barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200846039U CN201415550Y (en) | 2009-03-30 | 2009-03-30 | Chalk barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201415550Y true CN201415550Y (en) | 2010-03-03 |
Family
ID=41791961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200846039U Expired - Fee Related CN201415550Y (en) | 2009-03-30 | 2009-03-30 | Chalk barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201415550Y (en) |
-
2009
- 2009-03-30 CN CN2009200846039U patent/CN201415550Y/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: 20100303 Termination date: 20110330 |