CN202498875U - Chalk sleeve - Google Patents
Chalk sleeve Download PDFInfo
- Publication number
- CN202498875U CN202498875U CN2012200443311U CN201220044331U CN202498875U CN 202498875 U CN202498875 U CN 202498875U CN 2012200443311 U CN2012200443311 U CN 2012200443311U CN 201220044331 U CN201220044331 U CN 201220044331U CN 202498875 U CN202498875 U CN 202498875U
- Authority
- CN
- China
- Prior art keywords
- chalk
- sleeve
- pipe
- rubber sleeve
- outer pipe
- 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
A chalk sleeve is characterized in that: a pipe body of the chalk sleeve is divided into an inner pipe and an outer pipe, wherein, the inner pipe is arranged inside the outer pipe, a rubber sleeve is also arranged inside the outer pipe and over the inner pipe, positions of the outer pipe and the rubber sleeve are fixed; a support plate is built in the inner pipe, the support plate is supported by a spring; a lower part of the outer pipe is locally provided with a vertical guide rail groove, a plurality of transverse spacing grooves are distributed in the guide rail groove; a sidewall of the inner pipe is integrally connected with a dialing block, the other end of the dialing block penetrates the outer pipe and is arranged in the spacing groove. The chalk sleeve of the utility model has the beneficial effects that: through the above structure, the chalk sleeve simply realizes that an exposed portion of a chalk is adjustable; in addition, the rubber sleeve has certain elasticity, and an upper rim of the rubber sleeve is higher than an upper rim of the outer pipe, thus the rubber sleeve can prevent the chalk from being broken during writing; at the same time, the spring can provide certain buffering, thereby preventing the chalk from being broken in the sleeve due to overexertion.
Description
Technical field
The utility model relates to a kind of stationery, particularly a kind of chalk sleeve of imparting knowledge to students and using.
Background technology
Present regular school, especially middle and primary schools, what teacher used during teaching still is chalk; When the blackboard writing on the blackboard; The teacher is directly hand-held chalk, because the composition of chalk mainly is lime stone (calcium carbonate) and gypsum (calcium sulfate), the skin that holds for a long time finger causes corrosion; To the teacher, especially young woman teacher's injury is bigger.In addition, after chalk used a period of time, short chalk head inconvenience was held, and has also caused waste.
The utility model content
The purpose of the utility model provides a kind of chalk sleeve that prevents that chalk from corroding finger skin.
For realizing above-mentioned purpose, the technical scheme of the utility model is following:
A kind of chalk sleeve, its profile is a tubulose, it is characterized in that: pipe and outer tube in body is divided into; In pipe be in the outer tube, rubber sleeve also is positioned at outer tube and above pipe, outer tube and rubber sleeve fixed-site; Interior pipe bottom lock is built-in with gripper shoe, and gripper shoe is by spring-loaded; Gripper shoe is slided in interior pipe and rubber sleeve, and chalk places in the rubber sleeve, and the chalk bottom is supported by gripper shoe; Part, outer tube bottom has vertical guide-track groove, is evenly distributed with a plurality of horizontal stopper slots in the guide-track groove from top to bottom, is connected with shifting block on the sidewall of interior pipe, and the shifting block other end passes outer tube and places in the stopper slot.
When chalk is longer, with shifting block to lower slider and place in the lower stopper slot, when chalk more in short-term, shifting block is upwards slided and places in the higher stopper slot.Better simplyly realized that the exposed parts of chalk is adjustable.Rubber is with certain elasticity and upper limb is higher than outer tube upper limb, can prevent that like this chalk from fractureing when writing, and simultaneously, the existence of spring can provide certain buffering, prevents that chalk is because of the excessive fracture in cover of exerting oneself.
Below in conjunction with accompanying drawing and embodiment the utility model is done explanation further.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure 1, stopper slot 2, guide-track groove 3, spring 4, shifting block 5, interior pipe 6, outer tube 7, rubber sleeve 8, chalk
The specific embodiment
As shown in Figure 1, a kind of chalk sleeve, its profile is a tubulose, pipe 5 and outer tube 6 in body is divided into; In pipe 5 be in the outer tube 6, rubber sleeve 7 also is positioned at outer tube and above pipe, outer tube 6 and rubber sleeve 7 fixed-site; Interior pipe bottom lock is built-in with gripper shoe, and gripper shoe is by spring 3 supportings; Gripper shoe is slided in interior pipe 5 and rubber sleeve 7, and chalk 8 places in the rubber sleeve 7, and the chalk bottom is supported by gripper shoe; Part, outer tube 6 bottom has vertical guide-track groove 2, is evenly distributed with a plurality of horizontal stopper slots 1 in the guide-track groove 2 from top to bottom, is connected with shifting block 4 on the sidewall of interior pipe 5, and shifting block 4 other ends pass outer tube 6 and place in the stopper slot.
Claims (1)
1. chalk sleeve, its profile is a tubulose, it is characterized in that: body is divided into interior pipe (5) and outer tube (6); In pipe (5) be in the outer tube (6), rubber sleeve (7) also is positioned at outer tube and above pipe, outer tube (6) and rubber sleeve (7) fixed-site; Interior pipe bottom lock is built-in with gripper shoe, and gripper shoe is supported by spring (3); Gripper shoe is slided in interior pipe (5) and rubber sleeve (7), and chalk (8) places in the rubber sleeve (7), and the chalk bottom is supported by gripper shoe; Outer tube (6) part, bottom has vertical guide-track groove (2), is evenly distributed with a plurality of horizontal stopper slots (1) in the guide-track groove (2) from top to bottom, is connected with shifting block (4) on the sidewall of interior pipe (5), and shifting block (4) other end passes outer tube (6) and places in the stopper slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200443311U CN202498875U (en) | 2012-02-07 | 2012-02-07 | Chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200443311U CN202498875U (en) | 2012-02-07 | 2012-02-07 | Chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202498875U true CN202498875U (en) | 2012-10-24 |
Family
ID=47035500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200443311U Expired - Fee Related CN202498875U (en) | 2012-02-07 | 2012-02-07 | Chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202498875U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107009784A (en) * | 2015-11-27 | 2017-08-04 | 盐城麦知汇科技有限公司 | A kind of application method of chalk sleeve |
| CN108001076A (en) * | 2017-11-22 | 2018-05-08 | 浙江海洋大学 | A kind of chalk sleeve with laser pen |
-
2012
- 2012-02-07 CN CN2012200443311U patent/CN202498875U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107009784A (en) * | 2015-11-27 | 2017-08-04 | 盐城麦知汇科技有限公司 | A kind of application method of chalk sleeve |
| CN108001076A (en) * | 2017-11-22 | 2018-05-08 | 浙江海洋大学 | A kind of chalk sleeve with laser pen |
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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: 20121024 Termination date: 20130207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |