CN2920681Y - Rotary chalk can - Google Patents
Rotary chalk can Download PDFInfo
- Publication number
- CN2920681Y CN2920681Y CN 200620089685 CN200620089685U CN2920681Y CN 2920681 Y CN2920681 Y CN 2920681Y CN 200620089685 CN200620089685 CN 200620089685 CN 200620089685 U CN200620089685 U CN 200620089685U CN 2920681 Y CN2920681 Y CN 2920681Y
- Authority
- CN
- China
- Prior art keywords
- chalk
- crust
- tube
- utility
- prevented
- 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
Links
- 238000000034 method Methods 0.000 abstract description 2
- 238000011109 contamination Methods 0.000 abstract 1
- 210000003811 finger Anatomy 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000005224 forefinger Anatomy 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Toys (AREA)
Abstract
The utility is a rotary chalk can, which belongs to culture and education articles for use, comprises a chalk-inserting chalk can characterized as a crust with inside screw at lower half is also comprised. A rotary handle is arranged on the bottom of the crust. A screw lever with male screw is arranged inside the rotary handle. The upper end of the rotary handle connects with the bottom of the chalk can. Comparing with in-existence techniques, the spiral lifting principle is adopted in the utility model, a chalkput into the chalk can, which can be lift up-and-down, to be fixed. Along with the spiral movements between the chalk can and the fixed crust, the chalk can lift up and down without being broken easily thereafter. At the same time crust part is held to use, the chalk is not contacted directly, thus contamination of the chalk to hands is prevented, dryness and fissures of finger skin are prevented.
Description
Technical field
The utility model relates to a kind of appurtenance when using chalk, particularly relates to a kind of dustproof anti-breaking rotary type chalk tube, is to the improvement of existing chalk structure, belongs to the school supply and stationery category, and suitable teacher uses when classroom instruction.
Background technology
At present, teacher in teaching process for prevent chalk dust dirty hand, paper commonly used wraps chalk and carries out writing on the blackboard, firmly changes slightly sometimes, chalk is just easily disconnected, have to throw away being left one section, has caused waste to school.And directly touch chalk with finger for a long time, also can cause finger skin coarse, even chap, so that the teacher who has respectively puts on a joint plastic sheath on thumb and forefinger, because of the airtight people of making feels very ill.
The utility model content
The purpose of this utility model is to overcome the prior art above shortcomings, improve by research, provide a kind of rotary type chalk tube, this rotary type chalk tube adopts the spiral lifting principle, is put in the liftable chalk tube chalk fixing, along with the screw between chalk tube and fixed housing, chalk can rise to fall and be difficult for fractureing again, and hand-held housing place when using simultaneously no longer directly contacts chalk, also just prevented chalk dust adversary's pollution, prevented finger skin drying, chap.
This rotary type chalk tube that the utility model provides, include the chalk tube of a slotting chalk, be characterized in tapped shell of Lower Half in addition, the bottom of this shell is provided with rotating handle, be provided with in this rotating handle and be with externally threaded spiral thick stick, the upper end of this rotating handle is connected with the chalk tube bottom.
Compared with prior art, the beneficial effects of the utility model are: adopt the spiral lifting principle, be put in the liftable chalk tube chalk fixing, along with the screw between chalk tube and fixed housing, chalk can rise to fall and be difficult for fractureing again, and hand-held housing place when using simultaneously no longer directly contacts chalk, also just prevented chalk dust adversary's pollution, prevented finger skin drying, chap.
Description of drawings
Accompanying drawing is the structural representation of an embodiment providing of the utility model.
The specific embodiment
As shown in the figure, this rotary type chalk tube includes the chalk tube 1 of a slotting chalk, also has the tapped shell 2 of Lower Half, the bottom of this shell 2 is provided with rotating handle 3, is provided with in this rotating handle 3 to be with externally threaded spiral thick stick 4, and the upper end of this rotating handle 4 has with chalk tube 1 bottom and is connected.
During use, rotatable rotating handle 3, spiral thick stick 4 jack-up chalk tubes 1 rise along shell 2 inwalls, the user can according to circumstances regulate the length of chalk, need with how long, allow with regard to rotating handle 3 be inserted in chalk in the chalk tube 1 and how long expose shell 2, because hand-held housing 2 places when using, avoided directly contact chalk of finger, also just prevented chalk dust adversary's pollution and finger skin drying, chap.
Claims (1)
1. rotary type chalk tube, include the chalk tube of a slotting chalk, it is characterized in that tapped shell of Lower Half in addition, the bottom of this shell is provided with rotating handle, be provided with in this rotating handle and be with externally threaded spiral thick stick, the upper end of this rotating handle is connected with the chalk tube bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089685 CN2920681Y (en) | 2006-03-09 | 2006-03-09 | Rotary chalk can |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089685 CN2920681Y (en) | 2006-03-09 | 2006-03-09 | Rotary chalk can |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2920681Y true CN2920681Y (en) | 2007-07-11 |
Family
ID=38253159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620089685 Expired - Fee Related CN2920681Y (en) | 2006-03-09 | 2006-03-09 | Rotary chalk can |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2920681Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808346A (en) * | 2019-02-25 | 2019-05-28 | 马晨晓 | A kind of pen holder for assisting enlightenment children to learn |
-
2006
- 2006-03-09 CN CN 200620089685 patent/CN2920681Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808346A (en) * | 2019-02-25 | 2019-05-28 | 马晨晓 | A kind of pen holder for assisting enlightenment children to learn |
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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 |