CN206030858U - Double -end chalk sleeve - Google Patents
Double -end chalk sleeve Download PDFInfo
- Publication number
- CN206030858U CN206030858U CN201620576228.XU CN201620576228U CN206030858U CN 206030858 U CN206030858 U CN 206030858U CN 201620576228 U CN201620576228 U CN 201620576228U CN 206030858 U CN206030858 U CN 206030858U
- Authority
- CN
- China
- Prior art keywords
- chalk
- double
- elastic device
- chalk sleeve
- cylindrical shell
- 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
- 238000005192 partition Methods 0.000 claims description 10
- 239000003086 colorant Substances 0.000 description 2
- 210000004247 hand Anatomy 0.000 description 2
- 241000029132 Paronychia Species 0.000 description 1
- 206010034016 Paronychia Diseases 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The utility model discloses a double -end chalk sleeve belongs to the daily teaching field, including cylindrical shell, be provided with interior baffle in that cylindrical shell is inside, interior baffle both sides are fixed resilient means respectively, is connected with push -pull institution respectively in the resilient means outside, push -pull institution include with the removal of chalk is accomplished in the limiting space cooperation of seting up in connecting portion, the clamping part that is used for the centre gripping chalk and the spacing portion that resilient means connects, spacing portion and cylindrical shell, and the cylindrical shell end is the elastic expansion mouth. The utility model discloses a simple structure, convenient to use effectively avoids hand direct contact chalk to cause the pollution, has also effectively avoided the chalk extravagant.
Description
Technical field
This utility model is related to daily teaching field, and in particular to a kind of double-ended chalk sleeve.
Background technology
When teacher carries out classroom instruction, chalk is the most frequently used instrument, and traditional chalk is mounted according to different colors
In different chalk holders.Teacher needs in different chalk holders to look for the chalk of different colours to write writing on the blackboard every time, and handss can be touched
Chalk, is all often chalk dust after writing on the blackboard is write on hand, very dirty, easy to obtain paronychia.
Authorization Notice No. discloses a kind of automatic chalk clamp fastener for the utility model of CN201140605, has an overcoat
Cylinder, is provided with double end swivelling chute in outer sleeve lining, is provided with inner sleeve in outer sleeve, be provided with elastic telescopic in inner sleeve upper end
Mouthful, two elongate holes are arranged with inner sleeve.Sliding seat is provided with inner sleeve, two are arranged with sliding seat
Dop.Dop is passed and is inserted in twin-feed spiral groove by elongate holes respectively.Its simple structure, environmentally-friendly sanitary.
Jing often writes the teacher of writing on the blackboard and will appreciate that, a chalk will soon be finished, and ordinary with changing propelling chalk clamping
Chalk in device, loses time.And the device is not suitable for chalk of the length less than clamper length, causes the wave of chalk
Take.
The content of the invention
In order to solve the above problems, the purpose of this utility model is：There is provided a kind of simple structure, it is easy to operate, can be with
Suitable for the double-ended chalk sleeve of different length chalk.Concrete technical scheme is as follows：
A kind of double-ended chalk sleeve, including barrel shrond, it is characterised in that：In described barrel shrond is internally provided with
Dividing plate, described internal partition both sides fix elastic device respectively, on the outside of described elastic device are connected to push-pull mechanism,
Described push-pull mechanism includes the connecting portion being connected with the elastic device, the clamping part for clamping chalk and limiting section, institute
The limiting section stated and the spacing interference fit opened up on barrel shrond complete the movement of chalk；Described barrel shrond end is bullet
Property telescopic mouth.
During use, two chalks are inserted into push-pull mechanism simultaneously from both direction, chalk can be clamped by elastic telescopic mouth,
Under the tension force of elastic device, two chalks are all in clamp position.After a wherein chalk use, due to elastic device
Elastic force, two chalks can be balanced by the movement of internal partition.
Preferably, described spacing space forms passage in the direction of parallel described clamping part, described passage is big
In the size of the limiting section.
Limiting section can be moved in spacing space, so arranged, and can be avoided because position is completely solid when writing
Determine and chalk caused by chalk increasing clamping dynamics is fractureed.
Preferably, being provided with the limited post for limiting the elastic device on described internal partition.
Limited post can limit the flexible trend of elastic device.
Preferably, the length of described limited post is more than 1/2nd of the elastic device length.
Preferably, the elastic device be in extended state when be between described two spacing spaces it is most long away from
From.
Elastic device and internal partition position is avoided to slide and cause double-ended chalk sleeve cisco unity malfunction.
A kind of double-ended chalk sleeve of the present utility model, simple structure are easy to use, are prevented effectively from handss directly contact chalk
Pollute, also effectively prevent chalk waste.
Description of the drawings
Accompanying drawing 1 is structural representation of the present utility model.
This utility model is further described below in conjunction with accompanying drawing.
Specific embodiment
Embodiment：As shown in figure 1, a kind of double-ended chalk sleeve, including the barrel shrond 1 that end is elastic telescopic mouth, on
Limited location space 5 is opened up on face.Internal partition 2 is internally provided with barrel shrond 1, the limit for limiting spring 3 is provided with
Position post 6, the length of limited post 6 is more than 1/2nd of 3 length of the elastic device.2 both sides of internal partition fix spring 3 respectively,
Push-pull mechanism 4 is connected on the outside of spring 3.Internal partition 2 can be moved left and right under the elastic force of spring 3.
Push-pull mechanism 4 includes the connecting portion 41 being connected with spring 3, the clamping part 42 for clamping chalk and limiting section 43,
Limiting section 43 can be moved in spacing space 5.Spacing space 5 forms passage in the direction of parallel clamping part 42, and passage is more than
The size of limiting section 43.
Claims (5)
1. a kind of double-ended chalk sleeve, including barrel shrond（1）, it is characterised in that：In described barrel shrond（1）It is internal to arrange
There is internal partition（2）, described internal partition（2）Both sides fix elastic device respectively（3）, in described elastic device（3）Outside point
Push-pull mechanism is not connected with（4）, described push-pull mechanism（4）Including with the elastic device（3）The connecting portion of connection（41）, use
In the clamping part of clamping chalk（42）And limiting section（43）, described limiting section（43）With barrel shrond（1）On open up it is spacing
Space（5）Cooperation completes the movement of chalk；Described barrel shrond（1）End is elastic telescopic mouth.
2. a kind of double-ended chalk sleeve according to claim 1, it is characterised in that：Described spacing space（5）Parallel
Described clamping part（42）Direction form passage, described passage is more than the limiting section（43）Size.
3. a kind of double-ended chalk sleeve according to claim 1 and 2, it is characterised in that：Described internal partition（2）Upper setting
Have for limiting the elastic device（3）Limited post（6）.
4. a kind of double-ended chalk sleeve according to claim 3, it is characterised in that：Described limited post（6）Length it is big
In the elastic device（3）/ 2nd of length.
5. a kind of double-ended chalk sleeve according to claim 1, it is characterised in that：In the elastic device（3）In drawing
It is described two spacing spaces when stretching state（5）Between longest distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620576228.XU CN206030858U (en) | 2016-06-14 | 2016-06-14 | Double -end chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620576228.XU CN206030858U (en) | 2016-06-14 | 2016-06-14 | Double -end chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206030858U true CN206030858U (en) | 2017-03-22 |
Family
ID=58313169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620576228.XU Expired - Fee Related CN206030858U (en) | 2016-06-14 | 2016-06-14 | Double -end chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206030858U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649043A (en) * | 2018-12-26 | 2019-04-19 | 河南护理职业学院 | Double end dustless chalk sleeve |
-
2016
- 2016-06-14 CN CN201620576228.XU patent/CN206030858U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649043A (en) * | 2018-12-26 | 2019-04-19 | 河南护理职业学院 | Double end dustless chalk sleeve |
| CN109649043B (en) * | 2018-12-26 | 2020-08-07 | 河南护理职业学院 | Double-end dustless chalk sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20190614 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |