CN200998956Y - Rotary chalk cap - Google Patents
Rotary chalk cap Download PDFInfo
- Publication number
- CN200998956Y CN200998956Y CNU2006201266906U CN200620126690U CN200998956Y CN 200998956 Y CN200998956 Y CN 200998956Y CN U2006201266906 U CNU2006201266906 U CN U2006201266906U CN 200620126690 U CN200620126690 U CN 200620126690U CN 200998956 Y CN200998956 Y CN 200998956Y
- Authority
- CN
- China
- Prior art keywords
- chalk
- sheath shell
- sheath body
- internal
- shell
- 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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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
A rotary chalk sheath comprises an internal sheath shell and an external sheath shell rotationally connected with each other. A moveable piston is arranged in the internal sheath shell. A bayonet to fix a chalk is arranged on the piston. A wall of the internal sheath shell is symmetrically with two vertical elevating chutes. Two slide blocks to match the elevating chute are positioned on the moveable piston. An internal wall of the external sheath shell is symmetrically arranged with two spiral chutes. An external end of the slide block on the moveable piston is positioned through the internal sheath shell. A flexible casing is arranged at an upper opening of the spiral chute on the internal wall of the external sheath shell to match the external sheath shell. An upper part of the flexible casing is arranged with a circle of cushioning sponge. A chalk is mounted into the internal sheath shell to fix the chalk through the bayonet on the moveable piston. As the internal sheath shell rotates towards the external sheath shell, the chalk is screwed out or in and then held by hand to write. The sheath has a simple structure and is practical. Hands of teachers will not directly contact the chalk to protect environment and health. Chalk length has no impact on writing any longer, thus avoiding waste.
Description
Technical field
The utility model relates to a kind of realia, particularly a kind of rotation chalk sleeve.
Background technology
Our teacher is very arduous, all will come into contacts with chalk every day, though invented micronic dust chalk and dust-sucking eraser now, teacher still will take chalk to write with hand, a class gets off, unavoidable still can on hand, on the book, on the clothes, and stay the trace of chalk dust to the glasses.And because firmly uneven, chalk also fractures easily, writes and difficulty with little chalk head, has to lose, and causes waste.
Summary of the invention
The technical problems to be solved in the utility model is at the deficiencies in the prior art, has proposed a kind of convenient rotation chalk sleeve with chalk writing.
The technical problems to be solved in the utility model is achieved through the following technical solutions, a kind of rotation chalk sleeve, be characterized in: it is provided with interior sheath body and the outer shell that rotation cooperates, be provided with a motion stops in the interior sheath body, motion stops is provided with the fixedly bayonet socket of chalk, symmetry has two vertical lifting chutes on the shell wall of interior sheath body, motion stops is provided with the slide block that cooperates with the lifting chute, symmetry is provided with two helical orbits, sheath body and cooperate with the spiral slide of outer shell inwall in the outer end of the slide block on the described motion stops is passed on the inwall of outer shell.
The technical problems to be solved in the utility model can also come further to realize by the following technical programs, is set with a soft cover at the upper edge hole of outer shell, and the top of soft cover is provided with a circle sponge cushion pad.
The technical problems to be solved in the utility model can also come further to realize by the following technical programs, the upper edge hole of sheath body in the lifting chute on the shell wall of interior sheath body extends to.Be for conveniently putting outer shell like this.
The utility model compared with prior art, in chalk packed in the sheath body, by the bayonet socket on the motion stops chalk is fixed, when interior sheath body is relative with outer shell when rotating, slide block on the motion stops slides along the helical orbit of outer shell, under the vertical lifting groove effect of interior sheath body, rise or descend, chalk is screwed out or precession, grasp housing and write.After piece of chalk uses up, take out the chalk head, insert a new chalk more again, just can continue to have used.It is simple and practical, and teacher's hand no longer directly contacts environmentally-friendly sanitary with chalk; The length of chalk also no longer influences writes, and has solved the problem of waste.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the outer shell structure chart.
The specific embodiment
A kind of rotation chalk sleeve, it is provided with interior sheath body 3 and the outer shell 5 that rotation cooperates, be provided with a motion stops 6 in the interior sheath body 3, motion stops 6 is provided with the fixedly bayonet socket of chalk, symmetry has two vertical lifting chutes 4 on the shell wall of interior sheath body 3, motion stops 6 is provided with the slide block 7 that cooperates with lifting chute 4, and symmetry is provided with two helical orbits 8, sheath body 3 and cooperate with the spiral slide 8 of outer shell 5 inwalls in the outer end of the slide block 7 on the described motion stops 6 is passed on the inwall of outer shell 5.
Upper edge hole at outer shell 5 is set with a soft cover 1, and the top of soft cover 1 is provided with a circle sponge cushion pad 2.Its effect is that chalk fractures when preventing to write for chalk that cushions back-out and the distance between the shell.
Claims (3)
1. one kind is rotated chalk sleeve, it is characterized in that: it is provided with interior sheath body (3) and the outer shell (5) that rotation cooperates, be provided with a motion stops (6) in the interior sheath body (3), motion stops (6) is provided with the fixedly bayonet socket of chalk, symmetry has two vertical lifting chutes (4) on the shell wall of interior sheath body (3), motion stops (6) is provided with the slide block (7) that cooperates with lifting chute (4), on the inwall of outer shell (5) symmetry be provided with two helical orbits (8), the outer end of the slide block (7) on the described motion stops (6) is passed interior sheath body (3) and is cooperated with the spiral slide (8) of outer shell (5) inwall.
2. rotation chalk sleeve according to claim 1 is characterized in that: the upper edge hole at outer shell (5) is set with a soft cover (1), and the top of soft cover (1) is provided with a circle sponge cushion pad (2).
3. rotation chalk sleeve according to claim 1 is characterized in that: the lifting chute (4) on the shell wall of interior sheath body (3) extends to the upper edge hole of interior sheath body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201266906U CN200998956Y (en) | 2006-10-30 | 2006-10-30 | Rotary chalk cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201266906U CN200998956Y (en) | 2006-10-30 | 2006-10-30 | Rotary chalk cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200998956Y true CN200998956Y (en) | 2008-01-02 |
Family
ID=39013363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201266906U Expired - Fee Related CN200998956Y (en) | 2006-10-30 | 2006-10-30 | Rotary chalk cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200998956Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890141A (en) * | 2017-11-28 | 2018-04-10 | 绿烟实业（深圳）有限公司 | Heating with extractor is not burnt smoking set |
| CN108001076A (en) * | 2017-11-22 | 2018-05-08 | 浙江海洋大学 | A kind of chalk sleeve with laser pen |
| CN110341348A (en) * | 2019-08-15 | 2019-10-18 | 浙江海洋大学 | A kind of chalk clamping device |
-
2006
- 2006-10-30 CN CNU2006201266906U patent/CN200998956Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108001076A (en) * | 2017-11-22 | 2018-05-08 | 浙江海洋大学 | A kind of chalk sleeve with laser pen |
| CN107890141A (en) * | 2017-11-28 | 2018-04-10 | 绿烟实业（深圳）有限公司 | Heating with extractor is not burnt smoking set |
| CN107890141B (en) * | 2017-11-28 | 2024-02-06 | 绿烟实业（深圳）有限公司 | Heating non-burning smoking set with extractor |
| CN110341348A (en) * | 2019-08-15 | 2019-10-18 | 浙江海洋大学 | A kind of chalk clamping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |