CN202046052U - Lifting type chalk sleeve - Google Patents
Lifting type chalk sleeve Download PDFInfo
- Publication number
- CN202046052U CN202046052U CN2011201134471U CN201120113447U CN202046052U CN 202046052 U CN202046052 U CN 202046052U CN 2011201134471 U CN2011201134471 U CN 2011201134471U CN 201120113447 U CN201120113447 U CN 201120113447U CN 202046052 U CN202046052 U CN 202046052U
- Authority
- CN
- China
- Prior art keywords
- chalk
- sleeve
- lifting type
- chalk sleeve
- annular groove
- 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 discloses a teaching aid and particularly discloses a lifting type chalk sleeve. The lifting type chalk sleeve is characterized by comprising an outer sleeve; a ring-shaped groove is arranged inside the wall of the outer sleeve; an inner sleeve is arranged inside the ring-shaped groove; and the inner sleeve is in threaded connection with an internal thread of the ring-shaped groove by an external thread. The lifting type chalk sleeve is simple in structure and attractive in appearance; a chalk is put in the chalk sleeve for use to achieve the purpose of cleanness and sanitation; and the length of the chalk can be regulated, thereby saving the chalk.
Description
(1) technical field
The utility model relates to a kind of teaching aid, particularly a kind of lift chalk sleeve.
(2) background technology
At present the teacher uses chalk at school the time, and chalk falls or chalk is used a half owing to often lacked very much and lost through normal off, thereby causes waste, generally all is directly to catch to touch chalk now simultaneously, not too health.
(3) summary of the invention
The utility model provides a kind of lift chalk sleeve of saving chalk, clean hygiene in order to remedy the defective of prior art.
The utility model is achieved by the following technical solution:
A kind of lift chalk sleeve is characterized in that: comprise overcoat, be provided with an annular groove in the wall of overcoat, be provided with interior cover in the annular groove, interior cover is connected by screw thread with the internal thread of annular groove by external screw thread.
The beneficial effects of the utility model are: this lift chalk sleeve, and simple in structure, good looking appearance is put into chalk sleeve with chalk and is used, and clean hygiene, and the length that can regulate chalk are saved chalk.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing 1 is the structural representation of the utility model lift chalk sleeve.
Among the figure, 1 interior cover, 2 overcoats, 3 annular grooves, 4 external screw threads, 5 internal threads.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This lift chalk sleeve is characterized in that: comprise overcoat 2, be provided with an annular groove 3 in the wall of overcoat 2, cover 1 in being provided with in the annular groove 3, interior cover 1 internal thread 5 by external screw thread 4 and annular groove 3 is connected by screw thread.
This lift chalk sleeve, during use, chalk is put into cover 1, by rotary sleeve 2 interior cover 1 is moved up and down in the annular groove 3 of overcoat 2, thereby the chalk in making in the cover 1 moves up and down, reach the purpose of regulating chalk length, prolonged the service life of chalk, the use amount of having saved chalk.
Claims (1)
1. lift chalk sleeve, it is characterized in that: comprise overcoat (2), be provided with an annular groove (3) in the wall of overcoat (2), be provided with interior cover (1) in the annular groove (3), interior cover (1) is connected by screw thread with the internal thread (5) of annular groove (3) by external screw thread (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201134471U CN202046052U (en) | 2011-04-18 | 2011-04-18 | Lifting type chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201134471U CN202046052U (en) | 2011-04-18 | 2011-04-18 | Lifting type chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202046052U true CN202046052U (en) | 2011-11-23 |
Family
ID=44986374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201134471U Expired - Fee Related CN202046052U (en) | 2011-04-18 | 2011-04-18 | Lifting type chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202046052U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332038A (en) * | 2013-07-02 | 2013-10-02 | 无锡天惠塑机有限公司 | Pencil cylinder |
| CN109808346A (en) * | 2019-02-25 | 2019-05-28 | 马晨晓 | A kind of auxiliary initiation child learns to use appliance for holding pen |
-
2011
- 2011-04-18 CN CN2011201134471U patent/CN202046052U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332038A (en) * | 2013-07-02 | 2013-10-02 | 无锡天惠塑机有限公司 | Pencil cylinder |
| CN109808346A (en) * | 2019-02-25 | 2019-05-28 | 马晨晓 | A kind of auxiliary initiation child learns to use appliance for holding pen |
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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: 20111123 Termination date: 20120418 |