CN204451631U - A kind of chalk sleeve that can prevent chalk from fractureing - Google Patents
A kind of chalk sleeve that can prevent chalk from fractureing Download PDFInfo
- Publication number
- CN204451631U CN204451631U CN201420797272.4U CN201420797272U CN204451631U CN 204451631 U CN204451631 U CN 204451631U CN 201420797272 U CN201420797272 U CN 201420797272U CN 204451631 U CN204451631 U CN 204451631U
- Authority
- CN
- China
- Prior art keywords
- chalk
- sleeve
- fractureing
- chalk sleeve
- prevent
- 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
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The utility model relates to a kind of chalk sleeve that can prevent chalk from fractureing, comprise cylindrical chalk sleeve body, described chalk sleeve body upper end is provided with opening, chalk can be inserted by opening and shift out, the diameter of chalk is more bigger than the diameter of described opening, both form extruding fit structure, described chalk sleeve also comprises a mechanism that chalk is moved up and down in chalk sleeve, described mechanism comprises: the base be connected with chalk sleeve lower end, be provided with internal thread in described base, described base connect a bottom with externally threaded support bar.While a kind of chalk sleeve that can prevent chalk from fractureing that the utility model relates to can effectively prevent chalk from use fractureing, chalk can be exhausted, avoid causing waste.
Description
Technical field
The utility model belongs to chalk sleeve field, especially a kind of chalk sleeve that can prevent chalk from fractureing.
Background technology
Chalk is the conventional apparatus of teaching, but easily to fracture because chalk is long, and uses chalk to write both hands of easily making dirty.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides a kind of chalk sleeve that can prevent chalk from fractureing that a kind of structure is simple, reasonable in design, easy to use.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of chalk sleeve that can prevent chalk from fractureing, comprise cylindrical chalk sleeve body, described chalk sleeve body upper end is provided with opening, chalk can be inserted by opening and shift out, the diameter of chalk is more bigger than the diameter of described opening, both form extruding fit structure, it is characterized in that: described chalk sleeve also comprises a mechanism that chalk is moved up and down in chalk sleeve, described mechanism comprises: the base be connected with chalk sleeve lower end, be provided with internal thread in described base, described base connect a bottom with externally threaded support bar.
Described screw rod installs advantage of the present utility model and beneficial effect is:
1, a kind of chalk sleeve that can prevent chalk from fractureing that the utility model relates to can effectively prevent chalk from fractureing.
2, a kind of chalk sleeve that can prevent chalk from fractureing that utility model relates to can exhaust chalk, avoids causing waste.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial sectional view of Fig. 1
Detailed description of the invention
Below by specific embodiment, the utility model is described in further detail, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of chalk sleeve that can prevent chalk from fractureing that the utility model relates to, comprise cylindrical chalk sleeve body 1, described chalk sleeve body upper end is provided with opening 4, chalk can be inserted by opening and shift out, the diameter of chalk is more bigger than the diameter of described opening, both form extruding fit structure, innovative point of the present utility model is: described chalk sleeve also comprises a mechanism that chalk is moved up and down in chalk sleeve, described mechanism comprises: the base 2 be connected with chalk sleeve lower end, internal thread is provided with in described base, described base connects a bottom with externally threaded support bar 3, rotating base to the left and right, support bar can move up and down in chalk body, thus promote moving downward of chalk.
Claims (1)
1. the chalk sleeve that can prevent chalk from fractureing, comprise cylindrical chalk sleeve body, described chalk sleeve body upper end is provided with opening, chalk can be inserted by opening and shift out, the diameter of chalk is more bigger than the diameter of described opening, both form extruding fit structure, it is characterized in that: described chalk sleeve also comprises a mechanism that chalk is moved up and down in chalk sleeve, described mechanism comprises: the base be connected with chalk sleeve lower end, be provided with internal thread in described base, described base connect a bottom with externally threaded support bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797272.4U CN204451631U (en) | 2014-12-05 | 2014-12-05 | A kind of chalk sleeve that can prevent chalk from fractureing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797272.4U CN204451631U (en) | 2014-12-05 | 2014-12-05 | A kind of chalk sleeve that can prevent chalk from fractureing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204451631U true CN204451631U (en) | 2015-07-08 |
Family
ID=53658568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420797272.4U Expired - Fee Related CN204451631U (en) | 2014-12-05 | 2014-12-05 | A kind of chalk sleeve that can prevent chalk from fractureing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204451631U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973432A (en) * | 2018-06-29 | 2018-12-11 | 王小兰 | A kind of chalk sleeve |
-
2014
- 2014-12-05 CN CN201420797272.4U patent/CN204451631U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973432A (en) * | 2018-06-29 | 2018-12-11 | 王小兰 | A kind of chalk sleeve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204451631U (en) | A kind of chalk sleeve that can prevent chalk from fractureing | |
| CN202016306U (en) | Pen capable of preventing pen cap from losing | |
| CN204278834U (en) | A kind of chalk sleeve that can prevent chalk from fractureing | |
| CN202463302U (en) | Writing brush with paper weight | |
| CN203093568U (en) | Pen holder with adjustable height | |
| CN204451632U (en) | A kind of chalk sleeve that can prevent chalk from fractureing | |
| CN204263752U (en) | A kind of lettering pen of replaceable pen point | |
| CN204451625U (en) | A kind of chalk sleeve that can prevent chalk from fractureing | |
| CN202515566U (en) | Simple and easy paper towel frame | |
| CN203093430U (en) | Improved novel chalk sleeve | |
| CN204278835U (en) | A kind of chalk sleeve that can prevent chalk from fractureing | |
| CN203198473U (en) | Fountain pen ink ground writing brush | |
| CN203172312U (en) | Pencil vase | |
| CN202029593U (en) | Autopen type eraser | |
| CN203110618U (en) | Chalk sleeve used for teaching | |
| CN202959855U (en) | Cup with base | |
| CN202528656U (en) | Improved chalk writer | |
| CN204398613U (en) | A kind of compasses pencil | |
| CN202806037U (en) | Convenient chalk cover | |
| CN203305706U (en) | Chalk sleeve capable of going up and down | |
| CN203189470U (en) | Head bolt of specially-manufactured thread mechanism of tube making machine | |
| CN203184511U (en) | Semicircle connection block of toothpaste tube manufacturing machine | |
| CN204488280U (en) | A kind of pencil | |
| CN204368577U (en) | A kind of push type bath foam bottle base device for storing liquid | |
| CN202777819U (en) | Table stand for toy table |
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: 20150708 Termination date: 20151205 |
|
| EXPY | Termination of patent right or utility model |