CN201124654Y - Chalk adjusting device - Google Patents
Chalk adjusting device Download PDFInfo
- Publication number
- CN201124654Y CN201124654Y CNU2007201988199U CN200720198819U CN201124654Y CN 201124654 Y CN201124654 Y CN 201124654Y CN U2007201988199 U CNU2007201988199 U CN U2007201988199U CN 200720198819 U CN200720198819 U CN 200720198819U CN 201124654 Y CN201124654 Y CN 201124654Y
- Authority
- CN
- China
- Prior art keywords
- chalk
- channel tube
- piece
- lumen
- regulating nut
- 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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Abstract
The utility model discloses a chalk regulating device, which is characterized in that the device comprises a channel tube with the same interior diameter as that of a regular piece of chalk. A regulating nut which comprises a push rod is arranged on one end of the channel tube, and is in thread connection with the channel tube by the corresponding screw thread on the channel tube. When the device is in use, a teacher only needs to hold the device, and first rotates the regulating nut out of the channel tube for a certain distance so as to place the whole piece of chalk into the channel tube with only a small section of chalk head exposed outside. Then, when the piece of chalk is used for writing, the length of the piece of chalk is constantly reducing, but the chalk body can continuously extends out of the channel tube through rotating the regulating nut, thus ensuring continuous use till the whole piece of chalk pushed out by the push rod of the regulating nut is used up. The device can prevent the teacher from tainting the hands with chalk powder and save the chalk.
Description
Technical field:
The utility model relates to a kind of chalk servicing unit, particularly a kind of adjusting chalk device.
Background technology:
Chalk is one of indispensable teaching stationery in the daily teaching life.But when using at ordinary times, teachers make the full hand to be dust usually after using up, and so both have been unfavorable for sanitation and hygiene influencing the healthy of teacher, make a lot of unspent chalk heads be wasted in vain again.So we have designed the device that a kind of teacher of convenience uses chalk.
The utility model content:
The purpose of this utility model provides a kind of adjusting chalk device.This device can make things convenient for teacher to use chalk when teaching.
According to above-mentioned purpose, its technical scheme is as follows:
Regulate the chalk device, it is characterized in that, comprise the lumen of the both ends open that an intracavity diameter is consistent with common chalk, an end of lumen is provided with an adjusting nut that comprises push rod, and this adjusting nut is threaded with lumen by the corresponding screw thread on the lumen.
This device is at first pulled out a segment distance with adjusting nut from the inner rotation of lumen as long as teacher holds this device in use, makes and whole chalk can be put into lumen, only exposes a bit of chalk head.When writing, chalk constantly shortens then, but can a chalk body constantly be stretched out in cavity by the rotation adjusting nut, makes it possible to continue to use.Push rod up to adjusting nut promotes whole chalk used until exhausted.This device can not only be avoided the full hand dust of teacher, can also save the chalk head.
Description of drawings:
Fig. 1 is a cross-sectional view of the present utility model.
The specific embodiment:
Further specify the utility model below in conjunction with accompanying drawing.
Referring to Fig. 1, adjusting chalk device described in the utility model, its structure comprises the lumen 1 of the both ends open that an intracavity diameter is consistent with common chalk, and an end of lumen is provided with an adjusting nut 2 that comprises push rod 3, and this adjusting nut is threaded with lumen by the corresponding screw thread on the lumen.
This device is at first pulled out a segment distance with adjusting nut from the inner rotation of lumen as long as teacher holds this device in use, makes and whole chalk can be put into lumen, only exposes a bit of chalk head.When writing, chalk constantly shortens then, but can a chalk body constantly be stretched out in cavity by the rotation adjusting nut, makes it possible to continue to use.Push rod up to adjusting nut promotes whole chalk used until exhausted.This device can not only be avoided the full hand dust of teacher, can also save the chalk head.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1, regulate the chalk device, it is characterized in that, comprise the lumen of the both ends open that an intracavity diameter is consistent with common chalk, an end of lumen is provided with an adjusting nut that comprises push rod, and this adjusting nut is threaded with lumen by the corresponding screw thread on the lumen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201988199U CN201124654Y (en) | 2007-12-03 | 2007-12-03 | Chalk adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201988199U CN201124654Y (en) | 2007-12-03 | 2007-12-03 | Chalk adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201124654Y true CN201124654Y (en) | 2008-10-01 |
Family
ID=39998069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201988199U Expired - Fee Related CN201124654Y (en) | 2007-12-03 | 2007-12-03 | Chalk adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201124654Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260580A (en) * | 2014-10-11 | 2015-01-07 | 江苏农林职业技术学院 | Anti-fracture environment-friendly pen shell |
-
2007
- 2007-12-03 CN CNU2007201988199U patent/CN201124654Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260580A (en) * | 2014-10-11 | 2015-01-07 | 江苏农林职业技术学院 | Anti-fracture environment-friendly pen shell |
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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 |