CN2806169Y - Erasable chalk sleeve - Google Patents
Erasable chalk sleeve Download PDFInfo
- Publication number
- CN2806169Y CN2806169Y CN 200520084983 CN200520084983U CN2806169Y CN 2806169 Y CN2806169 Y CN 2806169Y CN 200520084983 CN200520084983 CN 200520084983 CN 200520084983 U CN200520084983 U CN 200520084983U CN 2806169 Y CN2806169 Y CN 2806169Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- chalk
- utility
- sleeve barrel
- slots
- 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
The utility model provides an erasable chalk sleeve which relates to an erasable chalk protective cover and belongs to the technical field of culture and education supplies. The utility model is composed of an outer sleeve, a sleeve barrel and a chalk holder, wherein the sleeve barrel provided with two corresponding guide slots is arranged in the outer sleeve; the chalk holder of which the outer wall is provided with two corresponding slide blocks is arranged in the sleeve barrel; the inner wall of the outer sleeve is provided with threaded slots, and the outer wall is provided with clamp slots in which strip-shaped rubber blocks are inlaid; the upper end and the lower end of each of the guide slots on the sleeve barrel are respectively provided with the clamp slots connected with the upper end and the lower end of each of the guide slots, and the bottom of the sleeve barrel and the bottom of the chalk holder are respectively provided with dust discharge holes. When the utility model is used, the sleeve barrel is rotated to enable the slide blocks on the chalk holder to slide up and down in the guide slots of the sleeve barrel so as to drive the chalk holder to rise or descend; when the chalk holder reaches a high-point, the chalk holder can be limited by the clamp slots connected with the guide slots so as to stop the rotation of the sleeve barrel; the clamp slots arranged on the outer sleeve are used for the inlay of rubber blocks, and the utility model solves a problem that an eraser is needed at any moment by clerical error. The utility model has the advantages of convenient use, sanitation, no hand pollution, waste avoidance, high work efficiency, etc.
Description
(1) technical field
The utility model relates to a kind of erasable chalk sheath, belongs to the school supply and stationery technical field.
(2) background technology
Usually when using chalk, all be that the human hand is directly held chalk and write, because powder is smeared easily and come off, hand is polluted, very unhygienic; In addition, during writing, chalk is easy to fracture, so cause waste; Simultaneously, mistake in writing, occurs, often need to use repeatedly blackboard eraser, time-consuming, effort.
(3) summary of the invention
The utility model is for remedying the prior art deficiency, a kind of easy to use, health is provided, do not pollute hand, the erasable chalk sleeve that avoids waste and can increase work efficiency.
The utility model is finished by following technical measures.
This chalk sleeve is made up of overcoat, sleeve, pen holder, wherein, sleeve is arranged in the overcoat, and two corresponding guide grooves are arranged on the sleeve, and the pen holder is arranged in the sleeve, and pen holder outer wall has two corresponding slide blocks, and outer casing inner wall has thread groove.
Outer casing outer wall has draw-in groove, and groove is embedded with the bar shaped block rubber.
Respectively there is the draw-in groove that is attached thereto at the two ends up and down of the guide groove on the sleeve.
A sleeve and a backing portion are equipped with dust exhausting hole.
The utility model is provided with that pen holder is used for placing and fixing chalk, and the pen holder places in the sleeve, when turnbarrel, by the thread groove that puts, the slide block in the pen holder is slided up and down outward in the guide groove of sleeve, rises or falls thereby drive the pen holder; When the pen holder rises or drops to the limit, can limit by the draw-in groove that links to each other with guide groove, sleeve is no longer rotated; Draw-in groove is set on the coat, is used to inlay the rubber skin bit, solved the problem that need erase the board because of clerical error at any time.The utlity model has easy to use, health, do not pollute hand, advantage such as avoid waste and increase work efficiency.
(4) description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model middle sleeve structural representation.
Fig. 3 is a holder structure schematic diagram in the utility model.
Wherein, 1, overcoat, 2, the pen holder, 3, guide groove, 4, draw-in groove, 5, sleeve, 6, slide block, 7, thread groove, 8, dust exhausting hole, 9, overcoat draw-in groove, 10, rubber skin bit.
(5) specific embodiment
Embodiment: structure such as Fig. 1, Fig. 2 and shown in Figure 3, be made up of overcoat 1, sleeve 5, pen holder 2, sleeve 5 is arranged in the overcoat, dust exhausting hole 8 is arranged at sleeve 5 bottoms, sleeve 5 has two corresponding guide grooves 3, respectively there is the draw-in groove 4 that is attached thereto at the two ends up and down of guide groove 3, and pen holder 2 is arranged in the sleeve 5, and pen holder 2 outer walls have two corresponding slide blocks 6, dust exhausting hole 8 is arranged at pen holder 2 bottoms, outer casing inner wall has thread groove 7, and overcoat 1 outer wall has draw-in groove 9, and groove is embedded with bar shaped block rubber 10.During use, in chalk insertion pen holder 2, when chalk was the longest, rotatable sleeve 5 made pen holder 2 place the bottom of sleeve 5, and the part of chalk has been avoided fractureing in sleeve 5 at this moment; When chalk is used very in short-term, rotatable sleeve 5 makes pen holder 2 place base 5 tops, and short and small chalk is still write, and has avoided waste; Simultaneously, when when writing, mistake occurring, can wipe by the bar shaped block rubber of inlaying in the draw-in groove on the outer casing outer wall 9 10, when bar shaped block rubber 10 diminishes, replaceable rubber skin bit 10.
Claims (4)
1, a kind of erasable chalk sleeve is characterized in that, mainly is made up of overcoat, sleeve, pen holder, wherein, sleeve is arranged in the overcoat, and two corresponding guide grooves are arranged on the sleeve, and the pen holder is arranged in the sleeve, and pen holder outer wall has two corresponding slide blocks, and outer casing inner wall has thread groove.
2, erasable chalk sleeve according to claim 1 is characterized in that outer casing outer wall has draw-in groove, and groove is embedded with the bar shaped block rubber.
3, erasable chalk sleeve according to claim 1 is characterized in that, respectively there is the draw-in groove that is attached thereto at the two ends up and down of the guide groove on the sleeve.
4, erasable chalk sleeve according to claim 1 is characterized in that, a sleeve and a backing portion are equipped with dust exhausting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520084983 CN2806169Y (en) | 2005-07-06 | 2005-07-06 | Erasable chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520084983 CN2806169Y (en) | 2005-07-06 | 2005-07-06 | Erasable chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2806169Y true CN2806169Y (en) | 2006-08-16 |
Family
ID=36920472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520084983 Expired - Fee Related CN2806169Y (en) | 2005-07-06 | 2005-07-06 | Erasable chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2806169Y (en) |
-
2005
- 2005-07-06 CN CN 200520084983 patent/CN2806169Y/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 | ||
| 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 |