CN202463259U - Chalk not easy to break off - Google Patents
Chalk not easy to break off Download PDFInfo
- Publication number
- CN202463259U CN202463259U CN2012200968343U CN201220096834U CN202463259U CN 202463259 U CN202463259 U CN 202463259U CN 2012200968343 U CN2012200968343 U CN 2012200968343U CN 201220096834 U CN201220096834 U CN 201220096834U CN 202463259 U CN202463259 U CN 202463259U
- Authority
- CN
- China
- Prior art keywords
- chalk
- overcoat
- interior cover
- sleeve
- depression
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a chalk not easy to break off, belonging to the field of daily education supplies. The chalk comprises a chalk body (1), an inner sleeve (2) and an outer sleeve (3), wherein the chalk body (1) is located in the outer sleeve (3); the outer surface of the inner sleeve (2) and the inner surface of the outer sleeve (3) are provided with screw threads (4); and the inner sleeve (2) is movably connected with the outer sleeve (3) through the screw threads (4); one end of the inner sleeve (2) is provided with a depression (5); one end of the chalk body (1) is clamped in the depression (5); and the length of the inner sleeve (2) is larger than that of the outer sleeve (3). The chalk has the advantages of simple structure, convenience in operation, loss reduction as well as cleanness and sanitation.
Description
Technical field
The utility model belongs to daily teaching articles for use field, particularly a kind of chalk of not frangible.
Background technology
Chalk is the instrument that widely uses in the daily life, generally is used for book and writes on the blackboard.About two cun long of common chalk, pluckings, a thin truncated cone-shaped, very well-balanced, very firmly very crisp.In use common chalk has following problem more outstanding: in the process that 1, the user writes on blackboard, firmly will cause chalk to fracture slightly greatly, cause unnecessary waste; 2, generally speaking, when chalk is write also the surplus 2cm left and right sides,, and be regarded as discarded object and be abandoned because the user is inconvenient to be affectedly bashful, utilization rate 3, the user who has reduced chalk write with chalk word later on completely the chalk dust adversary of hand have corrosivity.
The utility model content
The purpose of the utility model is to overcome the deficiency of prior art, and a kind of chalk of not frangible is provided, and this chalk both can reduce and fractures, and chalk is utilized.
To achieve these goals, the technical scheme of the utility model is following: a kind of chalk of not frangible comprises by the chalk body; Cover and overcoat in it also comprises; The chalk body is positioned at overcoat, and the outer surface of interior cover and the inner surface of overcoat are provided with screw thread, and interior cover and overcoat flexibly connect through screw thread; One end of interior cover is provided with depression, and an end of chalk body is stuck in the depression.
As improvement, the length of said interior cover is greater than the length of said overcoat.
The utility model is introduced chalk with the mechanical mechanism of lipstick, adjusts the length that chalk exposes overcoat through the rotation of interior cover, both can reduce fractureing, and chalk is utilized, and the hand that can also completely cut off the user contacts with the direct of chalk.
The utlity model has advantage simple in structure, easy to operate, as to reduce loss, clean hygiene.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
As shown in Figure 1, a kind of chalk of not frangible comprises by chalk body 1, interior cover 2 and overcoat 3; Chalk body 1 is positioned at overcoat 3; The outer surface of interior cover 2 and the inner surface of overcoat 3 are provided with screw thread 4, and interior cover 2 flexibly connects through screw thread 4 with overcoat 3, and an end of interior cover 2 is provided with and caves in 5; One end of chalk body 1 is stuck in the depression 5, and the length of interior cover 2 is greater than the length of overcoat 3.
Claims (2)
1. chalk of frangible not; Comprise by chalk body (1), it is characterized in that: it also comprises interior cover (2) and overcoat (3), and chalk body (1) is positioned at overcoat (3); The outer surface of interior cover (2) and the inner surface of overcoat (3) are provided with screw thread (4); Interior cover (2) flexibly connects through screw thread (4) with overcoat (3), and an end of interior cover (2) is provided with depression (5), and an end of chalk body (1) is stuck in the depression (5).
2. the chalk of a kind of not frangible as claimed in claim 1 is characterized in that: the length of cover (2) is greater than the length of said overcoat (3) in said.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200968343U CN202463259U (en) | 2012-03-07 | 2012-03-07 | Chalk not easy to break off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200968343U CN202463259U (en) | 2012-03-07 | 2012-03-07 | Chalk not easy to break off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202463259U true CN202463259U (en) | 2012-10-03 |
Family
ID=46911447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200968343U Expired - Fee Related CN202463259U (en) | 2012-03-07 | 2012-03-07 | Chalk not easy to break off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202463259U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105711293A (en) * | 2016-01-22 | 2016-06-29 | 孙硕 | Fracture-proof chalk clamp |
| CN106142905A (en) * | 2016-09-13 | 2016-11-23 | 南宁市远才教育咨询有限公司 | A kind of chalk sleeve |
| CN106313948A (en) * | 2016-09-13 | 2017-01-11 | 南宁市远才教育咨询有限公司 | Chalk cover with laser lamp |
-
2012
- 2012-03-07 CN CN2012200968343U patent/CN202463259U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105711293A (en) * | 2016-01-22 | 2016-06-29 | 孙硕 | Fracture-proof chalk clamp |
| CN106142905A (en) * | 2016-09-13 | 2016-11-23 | 南宁市远才教育咨询有限公司 | A kind of chalk sleeve |
| CN106313948A (en) * | 2016-09-13 | 2017-01-11 | 南宁市远才教育咨询有限公司 | Chalk cover with laser lamp |
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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: 20121003 Termination date: 20130307 |