CN205058945U - Break -proof chalk sleeve - Google Patents
Break -proof chalk sleeve Download PDFInfo
- Publication number
- CN205058945U CN205058945U CN201520703196.0U CN201520703196U CN205058945U CN 205058945 U CN205058945 U CN 205058945U CN 201520703196 U CN201520703196 U CN 201520703196U CN 205058945 U CN205058945 U CN 205058945U
- Authority
- CN
- China
- Prior art keywords
- chalk
- sleeve
- cavity
- sleeve pipe
- sheathed tube
- 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
Abstract
The utility model relates to a teaching articles for use, the name is break -proof chalk sleeve, including chalk cover body, chalk cover body includes sleeve pipe and piston again, and the cover intraduct has the cavity, and the cavity is the structure that coordinates the chalk, and the piston is installed in the first end of sheathed tube the inside, and the sheathed tube other end is the second end, characterized by: the inside fixed first rubber circle of sheathed tube second end still fix a second rubber circle in the middle of the sheathed tube, such chalk cover has the advantage that prevents chalk fracture, convenient to use, still has the advantage of chucking chalk, the sheathed tube centre is fixed second rubber circle still, has to prevent chalk fracture, the better advantage of effect.
Description
Technical field
The utility model relates to realia, specifically relates to chalk sleeve.
Background technology
Chalk sleeve comprises sleeve pipe and piston, and inside pipe casing has cavity, and cavity coordinates the structure of chalk, and during use, chalk is inside cavity, and piston runs forward and can promote chalk and shift out sleeve pipe; In prior art, the afterbody of piston does not stick the parts of chalk, and like this, using and releasing along with chalk, has space outside chalk and between cavity, because chalk easily fractures, has awkward shortcoming.
Summary of the invention
The purpose of this utility model is exactly for above-mentioned shortcoming, provides a kind of and prevents chalk fracture, chalk sleeve---Snap-preventing chalk sleeve easy to use.
The technical solution of the utility model is achieved in that Snap-preventing chalk sleeve, comprise chalk sleeve body, chalk sleeve body comprises again sleeve pipe and piston, inside pipe casing has cavity, cavity is the structure coordinating chalk, piston is arranged on inside the first end of sleeve pipe, and the other end of sleeve pipe is the second end, it is characterized in that: fix first rubber ring in the second end inside of described sleeve pipe.
Say further, also fix second rubber ring in the centre of described sleeve pipe.
The beneficial effects of the utility model are: such chalk sleeve have prevent chalk from rupturing, advantage easy to use, also there is the advantage of clamping chalk; Also fix second rubber ring in the centre of described sleeve pipe, there is the advantage preventing chalk fracture, better effects if.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1, sleeve pipe 2, piston 3, chalk 4, second end 5, first rubber ring 6, second rubber ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, Snap-preventing chalk sleeve, comprise chalk sleeve body, chalk sleeve body comprises again sleeve pipe 1 and piston 2, inside pipe casing has cavity, and cavity is the structure coordinating chalk 3, and piston is arranged on inside the first end of sleeve pipe, the other end of sleeve pipe is the second end 4, it is characterized in that: fix first rubber ring 5 in the second end inside of described sleeve pipe.
Say further, also fix second rubber ring 6 in the centre of described sleeve pipe.
When the utility model uses, can be placed in cavity by chalk 4, the first rubber ring 5 and the second rubber ring 6 can clamp chalk, have effect of the present utility model.
The foregoing is only specific embodiment of the utility model, but architectural feature of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the change done or modification are all encompassed in the scope of the claims of the present utility model.
Claims (2)
1. Snap-preventing chalk sleeve, comprise chalk sleeve body, chalk sleeve body comprises again sleeve pipe and piston, inside pipe casing has cavity, cavity is the structure coordinating chalk, piston is arranged on inside the first end of sleeve pipe, and the other end of sleeve pipe is the second end, it is characterized in that: fix first rubber ring in the second end inside of described sleeve pipe.
2. chalk sleeve according to claim 1, is characterized in that: also fix second rubber ring in the centre of described sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520703196.0U CN205058945U (en) | 2015-09-13 | 2015-09-13 | Break -proof chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520703196.0U CN205058945U (en) | 2015-09-13 | 2015-09-13 | Break -proof chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205058945U true CN205058945U (en) | 2016-03-02 |
Family
ID=55385542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520703196.0U Expired - Fee Related CN205058945U (en) | 2015-09-13 | 2015-09-13 | Break -proof chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205058945U (en) |
-
2015
- 2015-09-13 CN CN201520703196.0U patent/CN205058945U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20160913 |