CN201824688U - Chalk sleeve - Google Patents
Chalk sleeve Download PDFInfo
- Publication number
- CN201824688U CN201824688U CN201020550941XU CN201020550941U CN201824688U CN 201824688 U CN201824688 U CN 201824688U CN 201020550941X U CN201020550941X U CN 201020550941XU CN 201020550941 U CN201020550941 U CN 201020550941U CN 201824688 U CN201824688 U CN 201824688U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- chalk
- locking device
- locking
- cylindrical 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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- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The utility model discloses a chalk sleeve, which comprises a cylinder. A sleeve is arranged in the cylinder; a sleeve spring is arranged between the sleeve and the cylinder; a locking device is arranged on a shell wall of the sleeve; the cylinder is provided with locking holes capable of containing the locking device; a chalk is contained in the sleeve; an adjusting screw is arranged on the cylinder; the locking device includes a fixing sleeve fixed onto the sleeve; a locking sleeve is inserted into the fixing sleeve; and the locking sleeve is connected with the sleeve by the aid of the locking device spring. When in operation, the chalk is placed into the sleeve, the locking sleeve is pressed down, the sleeve is adjusted to a proper position, and then the chalk is fixed by the adjusting screw. When the chalk is used up, another chalk can replace the chalk by means of adjusting the adjusting screw. The chalk sleeve is simple in structure and convenient in use, reduces waste of chalks, and is safer.
Description
Technical field
The utility model relates to a kind of teaching appliance, particularly a kind of chalk sleeve.
Background technology
In education activities, need to use chalk, chalk when writing, often since hold a pen improper or the excessive chalk that causes of exerting oneself cracked, thereby cause waste, even damage finger sometimes.
The utility model content
The technical problems to be solved in the utility model is the deficiency at technique scheme, and a kind of chalk sleeve is provided, and this chalk sleeve can reduce the waste of chalk, prevents the damage finger.
For addressing the above problem the technical solution of the utility model be:
A kind of chalk sleeve comprises cylindrical shell, it is characterized in that: be provided with sleeve in the described cylindrical shell, be provided with sleeve spring between described sleeve and the cylindrical shell, the shell wall of described sleeve is provided with locking device, and described cylindrical shell is provided with several lock holes that can hold locking device, in the described sleeve chalk is housed.
Below be to further improvement in the technical proposal:
Described cylindrical shell is provided with adjustment screw.
Described locking device comprises the fixed cover that is fixed on the sleeve, is plugged with locking bushing on the described fixed cover, and described locking bushing is connected with sleeve by the locking device spring.
During work, chalk is put in the sleeve, pressed locking bushing then, sleeve is adjusted to correct position, then with the fixing chalk of adjustment screw, when chalk is used up, only need to regulate adjustment screw, change chalk then and get final product, the utility model is simple in structure, easy to use, reduced the waste of chalk, safer.
Below in conjunction with drawings and Examples technique scheme is described further.
Description of drawings
Accompanying drawing 1 is the structural representation of a kind of chalk sleeve among the utility model embodiment;
Accompanying drawing 2 is the structural representation of locking device among the embodiment.
Among the figure:
The 1-cylindrical shell; The 2-sleeve; The 3-locking device; The 4-chalk; The 5-lock hole; The 6-adjustment screw; The 7-sleeve spring; 8-locking device spring; The 9-fixed cover; The 10-locking bushing.
The specific embodiment
Embodiment, as shown in Figure 1, a kind of chalk sleeve comprises cylindrical shell 1, be provided with sleeve 2 in the described cylindrical shell 1, be provided with sleeve spring 7 between described sleeve 2 and the cylindrical shell 1, the shell wall of described sleeve 2 is provided with locking device 3, and described cylindrical shell 1 is provided with several lock holes that can hold locking device 35, in the described sleeve 2 chalk 4 is housed, described cylindrical shell 1 is provided with adjustment screw 6, and described adjustment screw 6 is used for fixing chalk 4, is provided with two pairs of locking devices 3 on the shell wall of described sleeve 2 relatively.
As shown in Figure 2, described locking device 3 comprises the fixed cover 9 that is fixed on the sleeve 2, is plugged with locking bushing 10 on the described fixed cover 9, and described locking bushing 10 is connected with sleeve 2 by locking device spring 8.
During work, chalk 4 is put in the sleeve 2, pressed locking bushing 10 then, sleeve 2 is adjusted to correct position, use fixedly chalk 4 of adjustment screw 6 then, when chalk is used up, only need to regulate adjustment screw 6, change chalk then and get final product, the utility model is simple in structure, easy to use, reduced the waste of chalk, safer.
Claims (3)
1. chalk sleeve, comprise cylindrical shell (1), it is characterized in that: be provided with sleeve (2) in the described cylindrical shell (1), be provided with sleeve spring (7) between described sleeve (2) and the cylindrical shell (1), the shell wall of described sleeve (2) is provided with locking device (3), described cylindrical shell (1) is provided with several lock holes that can hold locking device (3) (5), and chalk (4) is housed in the described sleeve (2).
2. a kind of chalk sleeve as claimed in claim 1 is characterized in that: described cylindrical shell (1) is provided with adjustment screw (6).
3. a kind of chalk sleeve as claimed in claim 1, it is characterized in that: described locking device (3) comprises the fixed cover (9) that is fixed on the sleeve (2), be plugged with locking bushing (10) on the described fixed cover (9), described locking bushing (10) is connected with sleeve (2) by locking device spring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020550941XU CN201824688U (en) | 2010-10-08 | 2010-10-08 | Chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020550941XU CN201824688U (en) | 2010-10-08 | 2010-10-08 | Chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201824688U true CN201824688U (en) | 2011-05-11 |
Family
ID=43963242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020550941XU Expired - Fee Related CN201824688U (en) | 2010-10-08 | 2010-10-08 | Chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201824688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303032A (en) * | 2013-06-25 | 2013-09-18 | 无锡商业职业技术学院 | Chalk sleeve |
-
2010
- 2010-10-08 CN CN201020550941XU patent/CN201824688U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303032A (en) * | 2013-06-25 | 2013-09-18 | 无锡商业职业技术学院 | Chalk sleeve |
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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: 20110511 Termination date: 20111008 |