CN108068497A - A kind of teaching chalk sleeve - Google Patents
A kind of teaching chalk sleeve Download PDFInfo
- Publication number
- CN108068497A CN108068497A CN201611040181.6A CN201611040181A CN108068497A CN 108068497 A CN108068497 A CN 108068497A CN 201611040181 A CN201611040181 A CN 201611040181A CN 108068497 A CN108068497 A CN 108068497A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- chalk
- end cap
- fixing bolt
- teaching
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
- B43K23/016—Holders for crayons or chalks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K29/00—Combinations of writing implements with other articles
Abstract
The present invention relates to teaching aid technical fields; more particularly to a kind of teaching chalk sleeve; including cylinder; the cylinder is hollow structure; one end of the cylinder is equipped with end cap; the end cap is flexibly connected with cylinder; the other end of the cylinder is equipped with to fix the fixing bolt of chalk; the cylinder is equipped with the threaded hole being adapted with fixing bolt; the fixing bolt pushes against the chalk being located in cylinder through threaded hole; protective case is arranged with outside the cylinder, heating unit is equipped in the protective case.The present apparatus is simple in structure, reduces use cost, easy to spread, has good practicability.Contacting directly for finger when in use and chalk is avoided, cleaning and health when keeping using, and avoid the problem of chalk is easily pulled apart when in use.By setting heating unit that can be heated when temperature is relatively low to the cylinder of the device, so as to be not easy to freeze hand, make the letter written with chalk that writing comes out more beautiful, greatly improve user experience.
Description
Technical field
The present invention relates to teaching aid technical fields, and in particular to a kind of teaching chalk sleeve.
Background technology
Chalk is the regular supplies that school teacher writes on blackboard, and now, the chalk that the country uses mainly has common chalk
With two kinds of dust-free chalk, main component is calcium carbonate and calcium sulfate or containing a small amount of calcium oxide.Teacher often need to be on blackboard
Writing is drawn and is explained.In writing, finger is contacted directly with chalk, often expires the powder that hand is white after class for one, right
Hand pollutes, unfavorable to the health of people.
And teacher when giving lessons, it is necessary to through common chalk-writing blackboard, flipbook or carry out other operations, when with
After the completion of chalk-writing, substantial amounts of dust will be stained with by the hand of chalk, and is capable of the environment of cleaning in time on classroom,
It so carries out will being stained with when other operations again and causes inconvenience on other articles such as book, teaching aid or clothes.
The content of the invention
It is an object of the invention to provide a kind of teaching chalk sleeves simple in structure, easy to use.
In order to achieve the above object, the technical solution adopted by the present invention is：A kind of teaching chalk sleeve, including cylinder,
The cylinder is hollow structure, and one end of the cylinder is equipped with end cap, and the end cap is flexibly connected with cylinder, the cylinder it is another
One end is equipped with to fix the fixing bolt of chalk, and the cylinder is equipped with the threaded hole being adapted with fixing bolt, described solid
Determine bolt and the chalk being located in cylinder is pushed against through threaded hole, be arranged with protective case outside the cylinder, be equipped in the protective case
Heating unit.
A kind of teaching chalk sleeve as described above, further illustrates to be that the end cap is connected with cylinder screw.
A kind of teaching chalk sleeve as described above further illustrates to be that the end cap is clamped with cylinder, the end cap
Lug is equipped with, the cylinder is equipped with the groove being adapted with lug.
A kind of teaching chalk sleeve as described above further illustrates to be that the heating unit includes the electric heating of series connection
Silk, switch and power supply.
A kind of teaching chalk sleeve as described above is illustrated further as the power supply is dry cell.
The beneficial effects of the invention are as follows：The present apparatus is simple in structure, reduces use cost, easy to spread, has good
Practicability.Contacting directly for finger when in use and chalk is avoided, cleaning and health when keeping using, and avoid powder
The problem of pen is easily pulled apart when in use is also easily carried when outgoing, is not easy to make surrounding articles dirty.By setting heating unit energy
It is enough that the cylinder of the device is heated when temperature is relatively low, so as to be not easy to freeze hand, make the letter written with chalk that writing comes out more beautiful
It sees, greatly improves user experience.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is schematic diagram of heating device.
In figure：1st, cylinder；2nd, end cap；3rd, fixing bolt；4th, protective case；5th, heating wire；6th, switch；7th, power supply；8th, chalk.
Specific embodiment
The specific embodiment of the invention is further elaborated below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of teaching chalk sleeve provided by the invention, including cylinder 1, the cylinder 1 is hollow knot
Structure, one end of the cylinder 1 are equipped with end cap 2, and the end cap 2 is flexibly connected with cylinder 1, so as to so that end cap 2 and cylinder 1 into
Row is split.It may be employed and be threadedly coupled between the end cap 2 and cylinder 1, card can also be used between the end cap 2 and cylinder 1
It connects, by setting lug on the end cap 2, the groove being adapted with lug is set on the cylinder 1, so that lug card
It connects in a groove.
The other end of the cylinder 1 is equipped with to fix the fixing bolt 3 of chalk 8, and the cylinder 1 is equipped with and fixed spiral shell
The threaded hole that bolt 3 is adapted, the fixing bolt 3 pushes against the chalk 8 being located in cylinder 1 through threaded hole, so as to ensure chalk 8
It is stable and firm when being write, it ensure that the fluency of writing.Finger when in use is avoided simultaneously and the direct of chalk connects
It touches, cleaning and health when keeping using, and avoids the problem of chalk is easily pulled apart when in use, also easily taken when outgoing
Band is not easy to make surrounding articles dirty.
Protective case 4 is arranged with outside the cylinder 1, heating unit is equipped in the protective case 4.By setting heating unit energy
It is enough that the cylinder of the device is heated when temperature is relatively low, so as to be not easy to freeze hand, make the letter written with chalk that writing comes out more beautiful
It sees, greatly improves user experience.
The heating unit includes the heating wire 5, switch 6 and power supply 7 of series connection.Specific connection diagram is as shown in Fig. 2, work as
When being heated, by lower switch 6, at this moment heating wire 5 generates heat, so as to be heated to protective case 4.The power supply
7 be preferably using dry cell, can also use button cell.The present apparatus is simple in structure, reduces use cost, easy to spread,
With good practicability.
The present invention is not limited to examples detailed above, in claims of the present invention limited range, art technology
The various deformations or amendments that personnel can make without creative work are protected by this patent.
Claims (5)
1. a kind of teaching chalk sleeve, including cylinder, it is characterised in that：The cylinder be hollow structure, the one of the cylinder
End is equipped with end cap, and the end cap is flexibly connected with cylinder, and the other end of the cylinder is equipped with to fix the fixing bolt of chalk,
The cylinder is equipped with the threaded hole being adapted with fixing bolt, and the fixing bolt is pushed against through threaded hole to be located in cylinder
Chalk, the cylinder are arranged with protective case, heating unit are equipped in the protective case outside.
2. a kind of teaching chalk sleeve according to claim 1, it is characterised in that：The end cap connects with cylinder screw
It connects.
3. a kind of teaching chalk sleeve according to claim 1, it is characterised in that：The end cap is clamped with cylinder, institute
End cap is stated equipped with lug, the cylinder is equipped with the groove being adapted with lug.
4. a kind of teaching chalk sleeve according to claim 1, it is characterised in that：The heating unit includes series connection
Heating wire, switch and power supply.
5. a kind of teaching chalk sleeve according to claim 4, it is characterised in that：The power supply is dry cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040181.6A CN108068497A (en) | 2016-11-10 | 2016-11-10 | A kind of teaching chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040181.6A CN108068497A (en) | 2016-11-10 | 2016-11-10 | A kind of teaching chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108068497A true CN108068497A (en) | 2018-05-25 |
Family
ID=62161484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611040181.6A Pending CN108068497A (en) | 2016-11-10 | 2016-11-10 | A kind of teaching chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108068497A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660700A (en) * | 2019-03-08 | 2020-09-15 | 天津大学 | Pen cap type hand warming pen set |
-
2016
- 2016-11-10 CN CN201611040181.6A patent/CN108068497A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660700A (en) * | 2019-03-08 | 2020-09-15 | 天津大学 | Pen cap type hand warming pen set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180525 |