CN201960917U - One-way sending-out type chalk cover - Google Patents
One-way sending-out type chalk cover Download PDFInfo
- Publication number
- CN201960917U CN201960917U CN2011200663389U CN201120066338U CN201960917U CN 201960917 U CN201960917 U CN 201960917U CN 2011200663389 U CN2011200663389 U CN 2011200663389U CN 201120066338 U CN201120066338 U CN 201120066338U CN 201960917 U CN201960917 U CN 201960917U
- Authority
- CN
- China
- Prior art keywords
- chalk
- chalk sleeve
- sleeve
- unidirectional
- way
- 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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Abstract
The utility model relates to a portable chalk cover, in particular to a one-way sending-out type chalk cover mainly consisting of a chalk sleeve, a one-way pushing block and a pushing lug. The chalk sleeve is provided with a longitudinal through groove, and the one-way pushing block is pushed into one end of the chalk sleeve, and provided with the pushing lug which is inserted into the longitudinal through groove of the chalk sleeve. The one-way sending-out chalk cover has the beneficial effects of avoiding the condition that hands are contacted with the chalk directly, saving chalk, being convenient to carry along, being simple and light, and guaranteeing that the chalk can be pushed out from the chalk sleeve continuously in the single direction.
Description
One, technical field:
The utility model relates to a kind of portable chalk sleeve, particularly a kind of unidirectional advancement-type chalk sleeve.
Two, background technology:
As a teacher, on the classroom, teach, usually will grasp chalk and write on blackboard, it all is chalk dust that a class gets off to expire hand, also wants water to wash one's hands after class, weather is warm all right, to winter to wash one's hands with cold water especially, seriously stimulate teacher's both hands, with the personal letter write, chalk has been lacked and will have been held incessantly, causes the chalk waste.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of unidirectional advancement-type chalk sleeve is provided, and is light, portable, saves chalk.
Its technical scheme is: mainly be made up of chalk sleeve, unidirectional injection block, ear pushing, chalk sleeve is provided with vertical through slot, and unidirectional injection block pushes chalk sleeve one end, and unidirectional injection block is provided with ear pushing, and vertical through slot of chalk sleeve is inserted in described ear pushing.
Above-mentioned chalk sleeve inner surface is provided with the zigzag cannelure.
The end that pushes of above-mentioned unidirectional injection block is made as the conical surface.
The beneficial effects of the utility model are: avoid hand directly to contact chalk, saved chalk, be convenient to carry, simple light guarantees constantly unidirectional release in the chalk sleeve of chalk.
Four, description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is right views of the present utility model.
Five, the specific embodiment:
1-2 in conjunction with the accompanying drawings, the utility model will be further described:
The utility model mainly is made up of chalk sleeve 2, unidirectional injection block 3, ear pushing 4, chalk sleeve 2 is provided with vertical through slot 5, unidirectional injection block 3 pushes chalk sleeve 2 one ends, unidirectional injection block 3 is provided with ear pushing 4, vertical through slot 5 of chalk sleeve 2 is inserted in described ear pushing 4, described chalk sleeve 2 inner surfaces design zigzag cannelure, and the end that pushes of described unidirectional injection block 3 is designed to the conical surface, described chalk sleeve has certain elasticity, so that clamp chalk 1.
During use, chalk 1 is pushed in the chalk sleeve, the pushing block of packing into, chalk is released suitable length, can begin to write, chalk exposes too in short-term, just can release by ear pushing, the zigzag cannelure of chalk sleeve 2 inner surfaces design can guarantee that chalk can not retreat, and can only unidirectionally move easy to use being easy to carry.
Claims (3)
1. unidirectional advancement-type chalk sleeve, it is characterized in that: mainly form by chalk sleeve (2), unidirectional injection block (3), ear pushing (4), chalk sleeve (2) is provided with vertical through slot (5), unidirectional injection block (3) pushes an end of chalk sleeve (2), unidirectional injection block (3) is provided with ear pushing (4), and described ear pushing (4) is inserted in vertical through slot (5) of chalk sleeve (2).
2. unidirectional advancement-type chalk sleeve according to claim 1 is characterized in that: described chalk sleeve (2) inner surface is provided with the zigzag cannelure.
3. unidirectional advancement-type chalk sleeve according to claim 1 is characterized in that: the end that pushes of described unidirectional injection block (3) is made as the conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200663389U CN201960917U (en) | 2011-03-06 | 2011-03-06 | One-way sending-out type chalk cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200663389U CN201960917U (en) | 2011-03-06 | 2011-03-06 | One-way sending-out type chalk cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201960917U true CN201960917U (en) | 2011-09-07 |
Family
ID=44523448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200663389U Expired - Fee Related CN201960917U (en) | 2011-03-06 | 2011-03-06 | One-way sending-out type chalk cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201960917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192625A (en) * | 2013-04-13 | 2013-07-10 | 温州市新亚文具有限公司 | Automatic refill projection device for pen |
-
2011
- 2011-03-06 CN CN2011200663389U patent/CN201960917U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192625A (en) * | 2013-04-13 | 2013-07-10 | 温州市新亚文具有限公司 | Automatic refill projection device for pen |
| CN103192625B (en) * | 2013-04-13 | 2015-11-11 | 温州市新亚文具有限公司 | The automatic propelling device of pen |
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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: 20110907 Termination date: 20120306 |