CN201471924U - Hand-protection chalk cover - Google Patents
Hand-protection chalk cover Download PDFInfo
- Publication number
- CN201471924U CN201471924U CN2009202345487U CN200920234548U CN201471924U CN 201471924 U CN201471924 U CN 201471924U CN 2009202345487 U CN2009202345487 U CN 2009202345487U CN 200920234548 U CN200920234548 U CN 200920234548U CN 201471924 U CN201471924 U CN 201471924U
- Authority
- CN
- China
- Prior art keywords
- chalk
- cylinder
- cylindrical body
- degree
- adjusting nut
- 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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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model relates to a hand-protection chalk cover, which is characterized in that the main body of the chalk cover adopts a cylindrical body (4) with the diameter slightly larger than that of a chalk, a regulating groove (1) for regulating the height of the chalk is formed on one side of the cylindrical body (4), an elastic regulating nut (2) is arranged on the outer side of the cylindrical body (4) and extends into the cylindrical body (4) from the regulating groove (1); and a chalk tray (3) is arranged in the cylindrical body (4) and connected with the part of the elastic regulating nut (2) extending into the cylindrical body (4). The chalk cover can ensure that the hands of a user are not in direct contact with the chalk, thereby achieving the purpose of hand protection.
Description
(1) technical field
The utility model relates to a kind of chalk sleeve.Belong to the office appliance technical field.
(2) background technology
Chalk is the long-time educational aid that uses of teacher, and common chalk directly contacts with user's hand, can make finger become coarse after the long-term use of teacher, and the adversary causes damage.
(3) summary of the invention
In order to overcome the problems referred to above, the utility model provides a kind of chalk cover of not hindering, and this chalk sleeve can make the user avoid directly contacting chalk.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of chalk cover of not hindering, described chalk sleeve main body is a cylinder, this cylinder diameter is than chalk slightly larger in diameter, cylinder one side has the regulating tank of regulating the chalk height, there is the degree of tightness adjusting nut in the cylinder outside, this degree of tightness adjusting nut is stretched in the cylinder by described regulating tank, and this degree of tightness adjusting nut can slide up and down along regulating tank.Cylinder is built-in with a chalk pallet, and this chalk pallet is connected with the part that the degree of tightness adjusting nut stretches into cylinder.
During use, unscrew the degree of tightness adjusting nut, insert piece of chalk, tighten the degree of tightness adjusting nut after the chalk that is adjusted to appropriate length exposes chalk sleeve, just can be used for chalk and write to described chalk sleeve.Chalk consumption is unscrewed the degree of tightness adjusting nut afterwards for one section, readjusts the chalk length of exposing, and tightens the degree of tightness adjusting nut again and just can continue to use.
The beneficial effects of the utility model are that this chalk sleeve can be taken in piece of chalk and be used to write, because hand does not directly touch chalk, reaches the purpose of protection hand.
(4) description of drawings
Fig. 1 is a structure chart of the present utility model.
Fig. 2 is the right side view of Fig. 1.
Among the figure: regulating tank 1, degree of tightness adjusting nut 2, chalk pallet 3, cylinder 4.
(5) specific embodiment
As Fig. 1～2, the utility model is not hindered the chalk cover, described chalk sleeve main body is a cylinder 4, these cylinder 4 diameters are than chalk slightly larger in diameter, cylinder 4 one sides have the regulating tank 1 of regulating the chalk height, there is degree of tightness adjusting nut 2 in cylinder 4 outsides, and this degree of tightness adjusting nut 2 is stretched in the cylinder 4 by described regulating tank 1, and this degree of tightness adjusting nut 2 can slide up and down along regulating tank 1.Cylinder 4 built-in chalk pallets 3, this chalk pallet 3 is connected with the part that described degree of tightness adjusting nut 2 stretches into cylinder 4.
Claims (1)
1. do not hinder the chalk cover for one kind, it is characterized in that: the main body of described chalk sleeve is a cylinder (4), this cylinder (4) diameter is than chalk slightly larger in diameter, cylinder (4) one sides have the regulating tank (1) of regulating the chalk height, there is degree of tightness adjusting nut (2) in cylinder (4) outside, this degree of tightness adjusting nut (2) is stretched in the cylinder (4) by described regulating tank (1), cylinder (4) is built-in with a chalk pallet (3), and this chalk pallet (3) is connected with the part that described degree of tightness adjusting nut (2) stretches into cylinder (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202345487U CN201471924U (en) | 2009-07-31 | 2009-07-31 | Hand-protection chalk cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202345487U CN201471924U (en) | 2009-07-31 | 2009-07-31 | Hand-protection chalk cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201471924U true CN201471924U (en) | 2010-05-19 |
Family
ID=42408169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202345487U Expired - Fee Related CN201471924U (en) | 2009-07-31 | 2009-07-31 | Hand-protection chalk cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201471924U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105459677A (en) * | 2015-11-19 | 2016-04-06 | 华蓥市阳和镇小学 | Heating type hand guard chalk sleeve |
-
2009
- 2009-07-31 CN CN2009202345487U patent/CN201471924U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105459677A (en) * | 2015-11-19 | 2016-04-06 | 华蓥市阳和镇小学 | Heating type hand guard chalk sleeve |
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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: 20100519 Termination date: 20100731 |