CN207207535U - A kind of chalk sleeve - Google Patents
A kind of chalk sleeve Download PDFInfo
- Publication number
- CN207207535U CN207207535U CN201720184274.XU CN201720184274U CN207207535U CN 207207535 U CN207207535 U CN 207207535U CN 201720184274 U CN201720184274 U CN 201720184274U CN 207207535 U CN207207535 U CN 207207535U
- Authority
- CN
- China
- Prior art keywords
- chalk
- top flat
- connector
- roller
- rotating shaft
- 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
Abstract
A kind of chalk sleeve, it is characterized in that：Including body, connector, described connector is threadedly attached in body one end；Described body is in a tubular form, there is longitudinal yi word pattern opening the side of body, body inwall both sides have some longitudinal directions raised in the spine shape of scale formula arrangement, projection has good pliability, set is provided with top flat in vivo, top flat can slide downwards along the projection of body inwall under external force, and top flat side is provided with press handle, and press handle passes body by yi word pattern opening；Body one end of described close connector is provided with fixed seat, and rotating shaft is provided with fixed seat, and one end of rotating shaft is socketed with roller.The utility model apparatus structure is simple, easy to use.Enable to short chalk to be extended, conveniently grasp and be continuing with, chalk can be adjusted according to service condition and expose the length of body, while beautiful straight line and camber line can also be drawn by the effect of roller, it is convenient and practical without again by other educational aids.
Description
Technical field
The utility model belongs to educational aid field, and in particular to a kind of chalk sleeve.
Background technology
Chalk is instrument widely used in teaching process, is generally used for being written on blackboard.Chalk is steady with being difficult to after short
Fixed is held in the hand, writing get up it is very inconvenient, although chalk is economical and practical educational aid, but substantial amounts of chalk end quilt
The huge waste for being undoubtedly resource is abandoned, and teacher is during teaching, it is often basic with drawing with coloured chalk straight line, curve etc.
Shape, the straight line or curve of picture conveniently are simultaneously lack of standardization, often also need to be drawn by special educational aid, very not
Just.
The content of the invention
The utility model is directed to the above-mentioned problems of the prior art and deficiency, there is provided one kind is simple in construction, is easily controlled
Chalk sleeve.
The utility model is achieved through the following technical solutions：A kind of chalk sleeve, it is characterized in that：Including body, connection
Head, described connector are threadedly attached in body one end；In a tubular form, there is a longitudinal word side of body to described body
Type opening, body inwall both sides have some longitudinal directions raised in the spine shape of scale formula arrangement, and projection has good pliability, covers internal
Top flat is provided with, top flat can slide downwards along the projection of body inwall under external force, and top flat side is provided with press handle,
Press handle passes body by yi word pattern opening；The snap ring made of elastomeric material is fixed with described connector；Body one
End is provided with fixed seat, rotating shaft is provided with fixed seat, one end of rotating shaft is socketed with roller.
Angled installation between body and roller described in the utility model.
The beneficial effects of the utility model are：Apparatus structure is simple, easy to use.Short chalk is enabled to be extended,
Conveniently grasp and be continuing with, the length that chalk exposes body can be adjusted according to service condition, while can also be by roller
Effect draw beautiful straight line and camber line, it is convenient and practical without again by other educational aids.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is body internal structure schematic diagram in the utility model.
Fig. 3 is the utility model body schematic cross-section.
1- bodies, 2- connectors, 3- rollers, 4- projections, 5- top flats, 6- fixed seats, 7- press handles, 8- rotating shafts, the words of 9- mono-
Type opening.
Embodiment
The technical solution of the utility model is described in further detail below by embodiment, and with reference to accompanying drawing.
A kind of chalk sleeve, including body 1, connector 2, described connector 2 are threadedly attached in the one end of body 1；Institute
In a tubular form, there is longitudinal yi word pattern opening 9 side of body 1 to the body 1 stated, and it is in scale formula that, which there are some longitudinal directions the inwall both sides of body 1,
The spine shape projection 4 of arrangement, projection 4 have good pliability；Top flat 5 is provided with body 1, top flat 5 can be used in outer masterpiece
The lower projection 4 along body inwall slides downwards, and the side of top flat 5 is provided with press handle 7, and press handle 7 is passed by yi word pattern opening 9
Body 1；The one end of body 1 is provided with fixed seat 6, and rotating shaft 8 is provided with fixed seat 6, and one end of rotating shaft 8 is socketed with roller 3.
The snap ring made of elastomeric material is fixed with connector 2 described in the utility model.
Angled installation between body 1 and roller 3 described in the utility model.
When chalk is too short, chalk is penetrated from the one end of connector 2, passed after the annulus in connector 2 from the other end,
Connector 2 with chalk is threadably secured with body 1, the other end of chalk is against at top flat 5, with continuous book
Write, chalk gradually shortens, and presses press handle 7, because the spine shape projection 4 of the inwall of body 1 has good pliability, press handle 7
Projection 4 of the top flat 5 along the inwall of body 1 is driven to slide downwards, in that context it may be convenient to change the position of top flat 5, make the powder for exposing body 1
Pen has enough length to be write, because top flat 5 inversely can not move upwards along spine shape projection 4, chalk in writing process
Will not be because in writing pressure retraction body 1, the snap ring in connector 2 be made of elastomeric material, has one between chalk
Fixed frictional force, it ensure that chalk will not slide out in body 1 when writing pause.After piece of chalk head is finished, by even
Joint 2 is pulled down, and top flat 5 is taken out from one end where connector 2, and again loads top flat 5 in body 1 from the other end, then
Load another chalk end, the position of adjustment top flat 5 and chalk end so that one end of chalk end, which is against at top flat 5, to continue
Use.Drawing straight line or during curve, without by other instruments, tilting body 1, make chalk end with roller 3 at the same with it is black
It plate plane contact, can directly be drawn according to 2 points of direction, in the presence of roller 3, the straight line of drafting can be ensured
The straight and radian of curve, simply facilitate.
Claims (3)
1. a kind of chalk sleeve, it is characterized in that：Including body（1）, connector（2）, described connector（2）It is threadedly attached in
Body one end；Described body（1）In a tubular form, body（1）Side have longitudinal yi word pattern opening（9）, body（1）Inwall two
Side has some longitudinal directions raised in the spine shape of scale formula arrangement（4）, it is raised（4）With good pliability；Body（1）Inside it is provided with top
Piece（5）, top flat（5）Can be under external force along the projection of body inwall（4）Sliding downwards, top flat（5）Side be provided with by
Pressure handle（7）, press handle（7）Pass through yi word pattern opening（9）Pass body（1）；Described body（1）One end is provided with fixed seat
（6）, fixed seat（6）On rotating shaft is installed（8）, rotating shaft（8）One end be socketed with roller（3）.
2. chalk sleeve according to claim 1, it is characterized in that：Described connector（2）Inside it is fixed with by elastomeric material system
Into snap ring.
3. chalk sleeve according to claim 1, it is characterized in that：Described body（1）With roller（3）Between angled peace
Dress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720184274.XU CN207207535U (en) | 2017-02-28 | 2017-02-28 | A kind of chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720184274.XU CN207207535U (en) | 2017-02-28 | 2017-02-28 | A kind of chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207207535U true CN207207535U (en) | 2018-04-10 |
Family
ID=61810305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720184274.XU Expired - Fee Related CN207207535U (en) | 2017-02-28 | 2017-02-28 | A kind of chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207207535U (en) |
-
2017
- 2017-02-28 CN CN201720184274.XU patent/CN207207535U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203844486U (en) | Multifunctional marking tool for English teaching | |
| CN206327053U (en) | A kind of compasses for teaching | |
| CN205220168U (en) | Novel mathematics education device | |
| CN207207535U (en) | A kind of chalk sleeve | |
| CN202088747U (en) | Teaching aid used for ellipse drawing and provided with long and short shafts capable of being adjusted conveniently | |
| CN204506251U (en) | A kind of mathematics diagraph | |
| CN206544408U (en) | A kind of pupil's blackboard for being easy to wipe | |
| CN107097569A (en) | One kind teaching picture circle and oval apparatus | |
| CN205381064U (en) | Drawing instrument for mathematical education | |
| CN201506159U (en) | Parallel line drawing tool | |
| CN201257850Y (en) | Multi-purpose teaching aid | |
| CN202439391U (en) | Pen convenient for drawing straight line | |
| CN203172274U (en) | Modified compasses | |
| CN203358136U (en) | Magnetic ellipsograph | |
| CN206983580U (en) | Multifunctional mathematics teaching chi | |
| CN206306684U (en) | A kind of mathematic(al) construction device | |
| CN205185668U (en) | Can draw centering needle subassembly of small circle | |
| CN203093462U (en) | Pen with straight ruler | |
| CN204222481U (en) | Auxiliary teaching aid for mathematical education | |
| CN202685684U (en) | Teaching aid compasses | |
| CN206242760U (en) | A kind of foreign language teaching chalker | |
| CN202487013U (en) | Multifunctional pointer | |
| CN203528145U (en) | Mathematical movable ruler device for teaching | |
| CN205661216U (en) | Multifunctional drawing appearance that volume drawing combines | |
| CN207123968U (en) | A kind of novel English teaching teaching aid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180410 Termination date: 20190228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |