CN202115161U - Chalk sleeve - Google Patents
Chalk sleeve Download PDFInfo
- Publication number
- CN202115161U CN202115161U CN2011201885517U CN201120188551U CN202115161U CN 202115161 U CN202115161 U CN 202115161U CN 2011201885517 U CN2011201885517 U CN 2011201885517U CN 201120188551 U CN201120188551 U CN 201120188551U CN 202115161 U CN202115161 U CN 202115161U
- Authority
- CN
- China
- Prior art keywords
- chalk
- length
- outer tube
- knob
- interior 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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- Pens And Brushes (AREA)
Abstract
The utility model relates to a chalk sleeve which comprises a sleeve body (1), wherein the sleeve body (1) is tubular and composed of an outer tube (11) and an inner tube (12), the length of the outer tube (11) is larger than the length of the inner tube (12), a longitudinal sliding groove is arranged on the inner wall of the outer tube (11), a convex edge matched with the sliding groove is arranged on the outer wall of the inner tube (12), a screw (4) is arranged in the inner tube (12), the length of the inner tube (12) is larger than the length of the screw (4), a chalk socket (5) is arranged at the top end of the inner tube (12), a knob (6) coaxial with the screw (5) is arranged at the tail end of the screw (5), and the outer diameter of the knob (6) is the same as the outer diameter of the outer tube (11). The chalk sleeve is provided with the outer tube, the inner tube, the screw and the knob, so that when a user writes with a chalk, with the protection of the outer sleeve, the fingers cannot be polluted by the chalk, and the chalk is not easy to break; and the length of the chalk can be conveniently adjusted by the knob when the chalk sleeve is used.
Description
Technical field
The utility model relates to a kind of and the matching used chalk sleeve of chalk.
Background technology
The teacher directly pinches chalk with hand and writes in the process of using chalk writing, therefore not only can cause chalk to pollute finger, but also causes the chalk fracture easily and the waste resource.
Summary of the invention
The technical problem that the utility model will solve is: overcome and when using chalk, directly pinch chalk with hand and pollute finger and the easily broken deficiency of chalk, a kind of chalk sleeve that protects the finger protection chalk is provided.
For realizing above-mentioned technical problem, the technical scheme that the utility model adopts is:
A kind of chalk sleeve comprises body, the body tubulose; Be made up of outer tube and interior pipe, the length of outer tube is provided with a chute longitudinally greater than the length of interior pipe at outer tube wall; On the outer wall of interior pipe, be provided with the lug, nib that is complementary with chute, be provided with a screw rod in the interior pipe, the length of interior pipe is greater than the length of screw rod; The top of interior pipe is the chalk socket, and the end of screw rod is a knob coaxial with it, and the external diameter of knob is identical with the external diameter of outer tube.
After adopting technique scheme, the beneficial effect of the utility model is:
Because this chalk sleeve is provided with outer tube, interior pipe, screw rod and knob; In the process of using chalk to write, because the protection of outer tube is arranged, so chalk not only can not pollute finger; And also easy fracture not of chalk, the length that can regulate chalk in use through knob easily.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further explain:
Accompanying drawing 1 is the structural representation of an embodiment of this chalk sleeve.
Accompanying drawing 2 is the outer tube of an embodiment of this chalk sleeve, interior pipe cross section sketch map.
The specific embodiment
Like Fig. 1, shown in Figure 2: a kind of chalk sleeve comprises body 1, body 1 tubulose; Be made up of outer tube 11 and interior pipe 12, the length of outer tube 11 is provided with a chute 2 longitudinally greater than the length of interior pipe 12 at outer tube 11 inwalls; On the outer wall of interior pipe 12, be provided with the lug, nib 3 that is complementary with chute 2; Be provided with a screw rod 4 in the interior pipe 12, the length of interior pipe 12 is greater than the length of screw rod 4, and the top of interior pipe 12 is a chalk socket 5; The end of screw rod 4 is a knob coaxial with it 6, and the external diameter of knob 6 is identical with the external diameter of outer tube 11.
When using this chalk sleeve; Be inserted in chalk in the chalk socket 5; Adjusting knob 6 makes chalk expose the suitable length of outer tube 11; Pinch outer tube with finger then and just can write, when chalk shortens owing to use, thereby make the interior pipe 12 outside promotion chalks that advance continuous outwards mobile through adjusting knob 6.
Claims (1)
1. a chalk sleeve comprises body (1), it is characterized in that: body (1) tubulose; Be made up of outer tube (11) and interior pipe (12), the length of outer tube (11) is provided with a chute (2) longitudinally greater than the length of interior pipe (12) at outer tube (11) inwall; On the outer wall of interior pipe (12), be provided with the lug, nib (3) that is complementary with chute (2); Be provided with a screw rod (4) in the interior pipe (12), the length of interior pipe (12) is greater than the length of screw rod (4), and the top of interior pipe (12) is chalk socket (5); The end of screw rod (4) is a knob coaxial with it (6), and the external diameter of knob (6) is identical with the external diameter of outer tube (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201885517U CN202115161U (en) | 2011-05-25 | 2011-05-25 | Chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201885517U CN202115161U (en) | 2011-05-25 | 2011-05-25 | Chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202115161U true CN202115161U (en) | 2012-01-18 |
Family
ID=45456253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201885517U Expired - Fee Related CN202115161U (en) | 2011-05-25 | 2011-05-25 | Chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202115161U (en) |
-
2011
- 2011-05-25 CN CN2011201885517U patent/CN202115161U/en not_active Expired - Fee Related
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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: 20120118 Termination date: 20120525 |