CN201279997Y - Mobile chalk - Google Patents
Mobile chalk Download PDFInfo
- Publication number
- CN201279997Y CN201279997Y CNU2008201534538U CN200820153453U CN201279997Y CN 201279997 Y CN201279997 Y CN 201279997Y CN U2008201534538 U CNU2008201534538 U CN U2008201534538U CN 200820153453 U CN200820153453 U CN 200820153453U CN 201279997 Y CN201279997 Y CN 201279997Y
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- CN
- China
- Prior art keywords
- chalk
- sleeve
- cover
- spring
- fore
- 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 relates to teaching aids, in particular to a chalk, and discloses a movable chalk comprising a chalk sleeve, in which the chalk is located; a chalk propelling and fixing mechanism, which is arranged on the chalk sleeve, comprises an inner sleeve, a push button sleeve, a push button, a first spring and a second spring; a partitioning plate dividing the chalk sleeve into an upper chamber and a lower chamber is arranged at the upper part of the chalk sleeve; the inner sleeve is placed in the lower chamber; a skirt-shaped jaw opening used for gripping the chalk is formed at the lower part of the inner sleeve; a propping post protruding upwards is arranged at the upper sealed end of the inner sleeve; a through hole for the propping post to penetrate is formed on the partitioning plate; the second spring is sleeved on the outer side of the propping post; the push button sleeve is fixedly connected to the top end of the chalk sleeve; and the push button fixedly connected with the propping post is arranged in the push button sleeve. The utility model has the advantages of simple structure and convenient use; the chalk sleeve can prevent a user from directly gripping the chalk with fingers; furthermore, the diameter of the chalk can be reduced under the condition that the chalk can be conveniently gripped, thereby saving materials.
Description
Technical field
The utility model relates to realia, particularly a kind of chalk.
Background technology
Chalk of the prior art, staff directly are held on the chalk, cause the calcium carbonate corrosion finger in the chalk easily, cause the finger section illness.And in order to grip conveniently, chalk is relatively thicker usually, probably has about 1 centimeter.
The utility model content
The purpose of this utility model is to provide a kind of Propelling chalk, can avoid pointing direct gripping chalk, but also can reduce the diameter of chalk.
The purpose of this utility model is achieved in that
A kind of Propelling chalk comprises that a chalk sleeve of built-in chalk, described chalk sleeve are provided with chalk and advance fixed mechanism.
Described chalk advances fixed mechanism to comprise: interior cover, button cover, button, first spring and second spring, the middle and upper part of described chalk sleeve is provided with chalk sleeve is divided into the dividing plate of chamber up and down, cover is placed on lower chambers in described, the bottom of cover is provided with the skirt shape pawl mouth that is used for the grasping chalk in described, and the upper closed end of interior cover is provided with the fore-set of epirelief; Described dividing plate is provided with the through hole that passes through for described fore-set, and the outside of fore-set is equipped with second spring, and the button cover is fixed in the top of chalk sleeve, is provided with the button of fixedlying connected with fore-set in the button cover.
Described fore-set upper end is provided with recess, and the lower end of described button is provided with flechette-type fork wedge, and described flechette-type fork wedge is plugged in the recess of described fore-set.
Be placed with first spring that withstands chalk in the cover in described.
The utility model is simple in structure, and is easy to use, can avoid pointing direct gripping chalk, but also can reduce the diameter of chalk, economical with materials under convenient situation about gripping.
Description of drawings
Fig. 1 is the structure cross-sectional schematic of the utility model Propelling chalk;
Among the figure: 1-chalk sleeve, 11-port, cover in the 12-dividing plate, 2-, 21-skirt shape pawl mouth, 22-fore-set, 3-button cover, 4-button, 41-flechette-type fork wedge, 5-first spring, 6-second spring, 7-chalk.
The specific embodiment
Below will be described in further detail the utility model Propelling chalk.
See also Fig. 1, this Propelling chalk comprises that a chalk sleeve 1 of built-in chalk, described chalk sleeve 1 are provided with chalk and advance fixed mechanism.
Described chalk advances fixed mechanism to comprise: interior cover 2, button cover 3, button 4, first spring 5 and second spring 6, the middle and upper part of described chalk sleeve 1 is provided with and is divided into the dividing plate 12 of chamber up and down, cover 2 is placed on lower chambers in described, the bottom of cover 2 is provided with the skirt shape pawl mouth 21 that is used for grasping chalk 7 in described, and the upper closed end of interior cover 2 is provided with the fore-set 22 of epirelief; Described dividing plate 12 is provided with the through hole that passes through for described fore-set 22, the outside of fore-set 22 is equipped with second spring 6, button cover 3 is fixed in the top of chalk sleeve 1, be provided with in the button cover 3 fixedly connected with fore-set 22 be used to drive fore-set 22 relative keys cover 3 buttons that move up and down 4.
Described fore-set 22 upper ends are provided with recess, and the lower end of described button 4 is provided with flechette-type fork wedge 41, and described flechette-type fork wedge 41 is plugged in the recess of described fore-set 22.Press button 4 and can drive fore-set 22 and move down, the skirt shape pawl mouth 21 of cover 2 stretches out chalk sleeve 1 diastole in making, chalk 7 is moved freely.When loosening button 4, second spring 6 bounces back into original position with fore-set 22, and the skirt shape pawl mouth 21 of interior cover 2 is stretched back in the chalk sleeve 1.
Be placed with first spring 5 that is used to eject chalk 7 in the cover 2 in described, can eject chalk 7 at any time.
The utility model is to use like this:
Press the button 4 before the use, the skirt shape pawl mouth 21 of interior cover 2 stretches out chalk sleeve 1 and diastole, overlaps in 2 in then chalk 7 being inserted.Then, loosen button 4, interior cover 2 resets because of second spring 6, and its skirt shape pawl mouth 21 is restrained because of the hoop card of chalk sleeve 1 port one 1.Because, there is one first spring 5 to eject chalk 7 at any time in the interior cover 2, as long as press button 4 during use, can block chalk 7 and it is fixedly positioning be used to write at any section.
The utility model is simple in structure, and is easy to use, can avoid pointing direct gripping chalk, but also can reduce the diameter of chalk, economical with materials under convenient situation about gripping.
Claims (4)
1, a kind of Propelling chalk is characterized in that: comprise a chalk sleeve of built-in chalk, described chalk sleeve is provided with chalk and advances fixed mechanism.
2, Propelling chalk as claimed in claim 1, it is characterized in that: described chalk advances fixed mechanism to comprise: interior cover, button cover, button, first spring and second spring, the middle and upper part of described chalk sleeve is provided with chalk sleeve is divided into the dividing plate of chamber up and down, cover is placed on lower chambers in described, the bottom of cover is provided with the skirt shape pawl mouth that is used for the grasping chalk in described, and the upper closed end of interior cover is provided with the fore-set of epirelief; Described dividing plate is provided with the through hole that passes through for described fore-set, and the outside of fore-set is equipped with second spring, and the button cover is fixed in the top of chalk sleeve, is provided with the button of fixedlying connected with fore-set in the button cover.
3, Propelling chalk as claimed in claim 2 is characterized in that: described fore-set upper end is provided with recess, and the lower end of described button is provided with flechette-type fork wedge, and described flechette-type fork wedge is plugged in the recess of described fore-set.
4, as claim 2 or 3 described Propelling chalks, it is characterized in that: be placed with first spring that withstands chalk in the cover in described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201534538U CN201279997Y (en) | 2008-09-24 | 2008-09-24 | Mobile chalk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201534538U CN201279997Y (en) | 2008-09-24 | 2008-09-24 | Mobile chalk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201279997Y true CN201279997Y (en) | 2009-07-29 |
Family
ID=40926883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201534538U Expired - Fee Related CN201279997Y (en) | 2008-09-24 | 2008-09-24 | Mobile chalk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201279997Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950319A (en) * | 2014-04-08 | 2014-07-30 | 华南理工大学 | Chalk holder |
| CN107053900A (en) * | 2017-04-06 | 2017-08-18 | 西北工业大学 | A kind of Multifunctional marker pen |
| CN112438888A (en) * | 2020-11-24 | 2021-03-05 | 重庆市中医院 | Push type moxa stick feeder |
-
2008
- 2008-09-24 CN CNU2008201534538U patent/CN201279997Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950319A (en) * | 2014-04-08 | 2014-07-30 | 华南理工大学 | Chalk holder |
| CN107053900A (en) * | 2017-04-06 | 2017-08-18 | 西北工业大学 | A kind of Multifunctional marker pen |
| CN112438888A (en) * | 2020-11-24 | 2021-03-05 | 重庆市中医院 | Push type moxa stick feeder |
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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: 20090729 |