CN2396982Y - Telescopic chalk holder - Google Patents
Telescopic chalk holder Download PDFInfo
- Publication number
- CN2396982Y CN2396982Y CN 99252927 CN99252927U CN2396982Y CN 2396982 Y CN2396982 Y CN 2396982Y CN 99252927 CN99252927 CN 99252927 CN 99252927 U CN99252927 U CN 99252927U CN 2396982 Y CN2396982 Y CN 2396982Y
- Authority
- CN
- China
- Prior art keywords
- chalk
- sleeve
- telescopic
- utility
- model
- 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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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model relates to a telescopic chalk sleeve which is mainly composed of an outer sleeve, a rotary sleeve, a chalk telescopic sleeve and a tail plug, wherein, the outer sleeve is provided with a spiral groove, and the tail plug is provided with a coupling clamping tongue; the rotary sleeve is provided with an open groove, and the chalk telescopic sleeve is provided with a clamping and limiting device and a circular table bulge. The telescopic chalk sleeve can improve the utilization rate of chalks and hands can be completely insulated with chalks during writing, so the sticking and pollution of chalk dust is avoided. The utility model has the advantages of simple structure, convenient writing and convenient carrying, and the utility model is a very ideal stationary and office supply.
Description
The utility model relates to a kind of Writing instrument, mainly is meant a kind of writing hygiene, convenience, the telescopic chalk sleeve that the chalk utilization rate is high, refers to a kind of chalk sleeve especially.
In people's daily chalk is write, particularly in school teacher's writing on blackboard, hold chalk when writing and cause finger to be stained with chalk dust, what this brought to the writer is to keep away unavoidable not only unhygienic but also inconvenient impression.The hand that is stained with chalk dust can pollute the teaching materials textbook on the one hand; Hand is held chalk and is write the chalk head that can stay careless length on the other hand, and because elongated chalk is too crisp, and the casual chalk that can fracture of writing like this can voluminous fecula nib, reduces the utilization rate of chalk.
The purpose of this utility model just is to provide a kind of telescopic chalk sleeve, with the characteristics of stretching flexibly by it, simple and direct clamping, stopping means, make it can not only overcome hand effectively and hold chalk and write the many deficiencies that bring people, but also have simple in structure, advantage such as write conveniently, be easy to carry.
The purpose of this utility model realizes in the following manner: telescopic chalk sleeve mainly is made up of overcoat (metal tube or plastic tube), rotary sleeve, chalk telescopic and tail plug.It is characterized in that the chalk telescopic is provided with that chalk clamps, stopping means, be placed in the rotary sleeve that is provided with the symmetrical openings groove by putting the symmetry two garden platform convex card liftings that are provided with, and with the rotary sleeve cutting ferrule in being provided with symmetrical spiral fluted overcoat.The tail plug sleeve is gone into overcoat one end, and the symmetrical block tongue that is provided with beyond the Great Wall by tail snaps in the symmetrical square hole on the rotary sleeve, makes tail plug and rotary sleeve connection for whole.The positive and negative rotation of rotary sleeve can be stretched chalk freely in cover.
Adopt telescopic chalk sleeve of the present utility model, owing to adopted unique clamping, stopping means has guaranteed that chalk does not fracture and chalk head the shortest as far as possible, thereby has improved its utilization rate.System and device makes the isolation fully of hand and chalk, has avoided being sticky with of chalk dust.It is simple in structure, writes conveniently, and portable advantage is a kind of very desirable stationery in fact.
Description of drawings:
Fig. 1 is a kind of enforcement structural representation of the present utility model;
Fig. 2 is a rotary sleeve of the present utility model, tail plug structure schematic diagram.
Wherein: 1-chalk, 2-clamp, 3-location link stopper, 4-chalk telescopic, 5-garden platform convex rises, 6-helicla flute, 7-overcoat, 8-connect square hole, 9-tail plug, 10-rotary sleeve, 11-open slot, 12-connection block tongue.
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in the figure, chalk of the present utility model (1) directly snaps in the clamp (2), and is blocked in position block (3); The garden platform convex that chalk telescopic (4) is provided with plays (5) cutting ferrule in open slot (11) and screw-in helicla flute (6); Overcoat (7) is provided with symmetrical helicla flute (6), and its endoporus packs into rotary sleeve (10) and tail plug (9); Rotary sleeve (10) is provided with symmetry and connects square hole (8) and symmetrical openings groove (11), and its outer garden packs into overcoat (7), and endoporus is inserted in chalk telescopic (4) and tail plug (9); Tail plug (9) is provided with symmetry and connects block tongue (12), snaps in to connect square hole (8), and rotary sleeve (10) and tail plug (9) are connected as a whole.When positive and negative rotation rotary sleeve, the garden platform convex plays makes chalk sleeve flexible freely under open slot and spiral fluted effect.
Claims (1)
- Telescopic chalk sleeve mainly is made up of chalk telescopic (4), overcoat (7), tail plug (9) and rotary sleeve (10), it is characterized in that being provided with clamp (2) on chalk telescopic (4), and position block (3) and garden platform convex play (5); Overcoat (7) is provided with symmetrical helicla flute (6); Tail plug (9) is provided with and connects block tongue (12); Rotary sleeve (10) is provided with symmetry and connects square hole (8) and symmetrical openings groove (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99252927 CN2396982Y (en) | 1999-11-08 | 1999-11-08 | Telescopic chalk holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99252927 CN2396982Y (en) | 1999-11-08 | 1999-11-08 | Telescopic chalk holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2396982Y true CN2396982Y (en) | 2000-09-20 |
Family
ID=34036972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99252927 Expired - Fee Related CN2396982Y (en) | 1999-11-08 | 1999-11-08 | Telescopic chalk holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2396982Y (en) |
-
1999
- 1999-11-08 CN CN 99252927 patent/CN2396982Y/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 |