CN202130164U - Chalk sleeve - Google Patents
Chalk sleeve Download PDFInfo
- Publication number
- CN202130164U CN202130164U CN201120131682U CN201120131682U CN202130164U CN 202130164 U CN202130164 U CN 202130164U CN 201120131682 U CN201120131682 U CN 201120131682U CN 201120131682 U CN201120131682 U CN 201120131682U CN 202130164 U CN202130164 U CN 202130164U
- Authority
- CN
- China
- Prior art keywords
- chalk
- pipe
- cap sleeve
- sleeve
- established
- 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
Links
- 230000000295 complement effect Effects 0.000 claims description 4
- 241001633942 Dais Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Pens And Brushes (AREA)
Abstract
A chalk sleeve relates to a teaching appliance. The chalk sleeve is a circular tube having a diameter matched with that of a chalk; female threads are provided on an inner side of a lower section of the circular tube; a cock provided with male threads is screwed into the circular tube from a bottom part of the tube; a slot is provided on a front end of the circular tube; the male threads are provided on an outer side of a front section of the circular pipe; a conical cap sleeve is connected on the front end of the circular pipe; the female threads are provided in the cap sleeve; and a chalk outlet is disposed on a top end of the cap sleeve. By employment of the chalk sleeve, the chalk is not easy to be broken so as to prolong service life of the chalk; and lots of chalk dusts will not be left on hands of a teacher.
Description
Technical field:
The utility model relates to a kind of realia.
Background technology:
Teacher is saying class hour, unavoidably can be stained with many chalk dusts on hand, on one's body, and chalk is easy to fracture, so can stay many chalk heads on the dais.
Summary of the invention:
The purpose of the utility model is that a kind of Chalk cover will be provided.Chalk cover is a pipe that is complementary with the chalk diameter, and negative thread is established in pipe hypomere inboard, screws in the cock of a tool pin thread from the pipe bottom, and the front end of pipe is provided with one section crack, and the leading portion outside of pipe is provided with pin thread; The front end of pipe can screw on the cap sleeve of a taper, establishes negative thread in the cap sleeve, and chalk outlet is established on the cap sleeve top.During use, screw off cap sleeve, in pipe, insert a chalk; The cock of turn bottom can make chalk flexible, behind the chalk that screws out suitable length; Screw on cap sleeve; The taper of cap sleeve can be tightened up the crack of pipe front end, and clamps the chalk termination, the chalk termination that suitable length can be exposed in the top of while cap sleeve.After the chalk termination uses up, can unclamp cap sleeve, the cock of rotation bottom makes chalk stretch out suitable length again, and the cap sleeve of screwing can continue to use.Can make not frangible of chalk like this, prolong the service life of chalk, and teacher can not be stained with a lot of chalk dusts more on hand yet.
Chalk cover is to be made up of penholder, the cap for brush, penholder bottom plug; Chalk cover is a pipe that is complementary with the chalk diameter; Negative thread is established in pipe hypomere inboard; Screw in the cock of a tool pin thread that can be meshed with negative thread from the pipe bottom, the front end of pipe is provided with one section crack, and the leading portion outside of pipe is provided with pin thread; The front end of pipe can screw on the cap sleeve of a taper, establishes negative thread in the cap sleeve, and chalk outlet is established on the cap sleeve top.
Adopting the beneficial effect of Chalk cover is to make not frangible of chalk, has prolonged the service life of chalk, and teacher can not be stained with a lot of chalk dusts more on hand yet.
Description of drawings:
Fig. 1 is the structural representation of Chalk cover.
The specific embodiment:
With reference to Fig. 1; Chalk cover is a pipe 1 that is complementary with the chalk diameter, and negative thread 3 is established in pipe 1 hypomere inboard, screws in the cock 4 of a tool pin thread 5 that can be meshed with negative thread 3 from pipe 1 bottom; The front end of pipe 1 is provided with one section crack 6, and the leading portion outside of pipe 1 is provided with pin thread 2; The front end of pipe 1 can screw on the cap sleeve 8 of a taper, establishes negative thread 7 in the cap sleeve 8, and chalk outlet 9 is established on cap sleeve 8 tops.
Claims (1)
1. Chalk cover is to be made up of penholder, the cap for brush, penholder bottom plug; It is characterized in that Chalk cover is a pipe that is complementary with the chalk diameter (1); Negative thread (3) is established in pipe (1) hypomere inboard; From the cock (4) that a tool pin thread (5) is established in pipe (1) bottom, the front end of pipe (1) is provided with one section crack (6), and pin thread (2) is established in the leading portion outside of pipe (1); The front end of pipe (1) can connect the cap sleeve (8) of a taper, establishes negative thread (7) in the cap sleeve (8), and chalk outlet (9) is established on cap sleeve (8) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120131682U CN202130164U (en) | 2011-04-23 | 2011-04-23 | Chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120131682U CN202130164U (en) | 2011-04-23 | 2011-04-23 | Chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202130164U true CN202130164U (en) | 2012-02-01 |
Family
ID=45518946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120131682U Expired - Fee Related CN202130164U (en) | 2011-04-23 | 2011-04-23 | Chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202130164U (en) |
-
2011
- 2011-04-23 CN CN201120131682U patent/CN202130164U/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: 20120201 Termination date: 20120423 |