CN204382890U - Double-ended chalk saver - Google Patents
Double-ended chalk saver Download PDFInfo
- Publication number
- CN204382890U CN204382890U CN201420762781.3U CN201420762781U CN204382890U CN 204382890 U CN204382890 U CN 204382890U CN 201420762781 U CN201420762781 U CN 201420762781U CN 204382890 U CN204382890 U CN 204382890U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- chalk
- propulsive element
- double
- fin
- 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 discloses a kind of double-ended chalk saver, belong to clamper or the field of connectors of writing implement.The utility model comprises two sleeves, and the upper and lower surface of described each sleeve is respectively equipped with an elongated strip slot; The inside of described each sleeve is provided with propulsive element, and the link of propulsive element is connected with chalk, and the promote-side of propulsive element is passed strip slot and stretches out outside sleeve; Be fixed with fin at the outer surface of the link of described propulsive element, the inwall of each sleeve is also fixed with corresponding fin; Described two sleeve side tail ends are fixed together by connector, and opposite side tail end is attached together mutually by the magnet be arranged on rear end surface.The utility model simplicity of design, easy to use, be with a wide range of applications.
Description
Technical field
The utility model belongs to clamper or the field of connectors of writing implement, is specifically related to a kind of double-ended chalk saver.
Background technology
Chalk is the instrument widely used in daily life, is generally used for book and writes on the blackboard.The chalk in ancient times is made with natural chalk usually, but now multiplex other material replace.The composition of chalk is a kind of white depositions of calcium sulfate, and be not easy to be decomposed, particle is larger than dust.The chalk of domestic use mainly contains common chalk and dust-free chalk two kinds, and its main component is calcium carbonate (lime stone) and calcium sulfate (gypsum), or containing a small amount of calcium oxide.
Chalk has fixing length when production, in time using up soon, hand-held by inconvenience very, and when hand-held whole chalk easily undue with strength or drop to the ground, it is done folding, and become the chalk end that a lot of block is little, this wastes chalk again greatly.Teacher is owing to being affectedly bashful chalk for a long time, and hand can become very coarse, may also damage skin on hand simultaneously.
Summary of the invention
The utility model is exactly a kind of double-ended chalk that the problem in order to solve chalk waste problem and chalk injury skin proposes.
The utility model realizes according to following technical scheme.
A kind of double-ended chalk saver, comprises two sleeves, and the upper and lower surface of described each sleeve is respectively equipped with an elongated strip slot; The inside of described each sleeve is provided with propulsive element, and the link of propulsive element is connected with chalk, and the promote-side of propulsive element is passed strip slot and stretches out outside sleeve; Be fixed with fin at the outer surface of the link of described propulsive element, the inwall of each sleeve is also fixed with corresponding fin; Described two sleeve side tail ends are fixed together by connector, and opposite side tail end is attached together mutually by the magnet be arranged on rear end surface.
The utility model obtains following beneficial effect.
This use of such design is novel effectively can decrease chalk waste, reduce the risk of chalk injury skin, adopt double-ended chalk to be in order to often chalk can be put in sleeve on the course of once imparting knowledge to students simultaneously, save the time, add the instruction time, the thinking of teacher is not interrupted, teaches and accomplish without any letup.The utility model simplicity of design of such design, easy to use, be with a wide range of applications.
Accompanying drawing explanation
Fig. 1 is profile of the present utility model;
Fig. 2 is left view of the present utility model.
Wherein: 1. sleeve; 2. propulsive element;
3. chalk; 4. connector;
5. magnet; 6. promote-side;
7. link; 8. fin.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further elaborated.
As shown in Figure 1, a kind of double-ended chalk saver, comprises two sleeves 1, and the upper and lower surface of described each sleeve 1 is respectively equipped with an elongated strip slot; The inside of described each sleeve 1 is provided with propulsive element 2, and the link 7 of propulsive element 2 is connected with chalk 3, and the promote-side 6 of propulsive element 2 is passed strip slot and stretches out outside sleeve; Be fixed with fin 8 at the outer surface of the link 7 of described propulsive element 2, the inwall of each sleeve 1 is also fixed with corresponding fin 8; Described two sleeve 1 side tail ends are fixed together by connector 4, and opposite side tail end is attached together mutually by the magnet 5 be arranged on rear end surface.
Fin 8 on the fin 8 of the outer surface of described link 7 and the inwall of sleeve 1 is all arranged on the direction perpendicular to propulsive element 2 promote-side 6.
Described sleeve 1 is made for plastics or metal material.
At school, the link 7 of chalk 3 with the propulsive element 2 using the utility model both sides is connected, when chalk 3 protrude sleeve 1 few time, promote the promote-side of propulsive element 2, one section, chalk is released outside sleeve 1, after a chalk is finished, the chalk 3 of 1 li, another sleeve of the present utility model can be used.When two sleeves 1 aligned inconvenient time, can by the magnet between two sleeves 1 separately.
Claims (3)
1. a double-ended chalk saver, comprises two sleeves (1), it is characterized in that: the upper and lower surface of described each sleeve (1) is respectively equipped with an elongated strip slot; The inside of described each sleeve (1) is provided with propulsive element (2), and the link (7) of propulsive element (2) is connected with chalk (3), and the promote-side (6) of propulsive element (2) is through strip slot and stretch out outside sleeve; Be fixed with fin (8) at the outer surface of the link (7) of described propulsive element (2), the inwall of each sleeve (1) is also fixed with corresponding fin (8); Described two sleeve (1) side tail ends are fixed together by connector (4), and opposite side tail end is attached together mutually by the magnet (5) be arranged on rear end surface.
2. double-ended chalk saver according to claim 1, is characterized in that: the fin (8) on the fin (8) of the outer surface of described link (7) and the inwall of sleeve (1) is all arranged on the direction perpendicular to propulsive element (2) promote-side (6).
3. double-ended chalk saver according to claim 1, is characterized in that: described sleeve (1) is made for plastics or metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420762781.3U CN204382890U (en) | 2014-12-08 | 2014-12-08 | Double-ended chalk saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420762781.3U CN204382890U (en) | 2014-12-08 | 2014-12-08 | Double-ended chalk saver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204382890U true CN204382890U (en) | 2015-06-10 |
Family
ID=53355639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420762781.3U Expired - Fee Related CN204382890U (en) | 2014-12-08 | 2014-12-08 | Double-ended chalk saver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204382890U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108638697A (en) * | 2018-06-27 | 2018-10-12 | 俞妍冰 | A kind of chalk sleeve |
-
2014
- 2014-12-08 CN CN201420762781.3U patent/CN204382890U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108638697A (en) * | 2018-06-27 | 2018-10-12 | 俞妍冰 | A kind of chalk sleeve |
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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 |
Granted publication date: 20150610 Termination date: 20151208 |
|
| EXPY | Termination of patent right or utility model |