CN202399710U - Chalk sleeve - Google Patents
Chalk sleeve Download PDFInfo
- Publication number
- CN202399710U CN202399710U CN2011205242865U CN201120524286U CN202399710U CN 202399710 U CN202399710 U CN 202399710U CN 2011205242865 U CN2011205242865 U CN 2011205242865U CN 201120524286 U CN201120524286 U CN 201120524286U CN 202399710 U CN202399710 U CN 202399710U
- Authority
- CN
- China
- Prior art keywords
- chalk
- sleeve
- cylindrical sleeve
- elastic guide
- elastic
- 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
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000004323 axial length Effects 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 2
- 229920001195 polyisoprene Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 229920001971 elastomer Polymers 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The utility model discloses a chalk sleeve. The chalk sleeve comprises a cylindrical sleeve, wherein the cylindrical sleeve has a hollow structure; and elastic guide rails are axially arranged in an inner cavity of the cylindrical sleeve at equal intervals. The elastic guide rails are made of elastic rubber or an elastic plastic material. By the chalk sleeve, a chalk can be inserted into the cylindrical sleeve for use, so that the problem that the chalk contaminates a hand in the using process is solved; and the elastic guide rails are distributed in the chalk sleeve at equal intervals, and fulfill the aims of clamping the chalk and guiding the chalk to move in the cylindrical sleeve. When the chalk moves to an appropriate position, the elastic guide rails clamp the chalk, and the contraction force of the cylindrical sleeve further clamps the chalk at the same time, so that a teacher can conveniently use the chalk, and the chalk cannot be broken easily; the position of the chalk in the cavity in the chalk sleeve can be adjusted, so that the problem that the chalk can be constantly shortened when used is solved; and the relatively short chalk can also be utilized through the chalk sleeve, so that a chalk resource is saved.
Description
Technical field
The utility model relates to the stationery technical field, and particularly a kind of teaching is convenient to grasping, protective device with chalk, relates in particular to a kind of chalk sleeve.
Background technology
Chalk is raw material with lime or gypsum, is the writing implement that in school, often uses, and teacher will use saying class hour.Though chalk has been brought into play very big effect in teaching process, there are following three kinds of defectives in use in it:
One, the word that writes with chalk for a long time, finger is gone up can stay chalk powder, at the end of the day will residual a lot of dust on the finger, be difficult to cleaning; The contained material of chalk has spread effect to the skin of human body, and Long contact time can cause pachylosis, dry and cracked, even can produce sequelae such as allergy, dermatitis, affects the healthy of teacher.
Two, in writing process,,, cause the waste of material so fractureed easily because the toughness of chalk material is less.
Three, the teacher is not easy to live with finger grip when using relatively shorter chalk, and it is relatively poor to write comfort level, and the quality of writing is also bad.
The utility model content
The purpose of the utility model be to overcome existing chalk write, weak point when using, provide a kind of avoid chalk dust make dirty the teacher hand, reduce the chalk sleeve of chalk waste, can solve the problems of the technologies described above effectively.
The purpose of the utility model realizes through following technical proposals:
A kind of chalk sleeve comprises cylindrical sleeve, and said cylindrical sleeve is a hollow structure, and axial five equilibrium is provided with elastic guide in its inner chamber.
In order to realize the utility model better, said elastic guide is by elastic caoutchouc or elastic plastic material manufacturing.
Further, the transverse gage of said elastic guide is less than or equal to the transverse gage of cylindrical sleeve.
In order to make chalk sleeve reach the effect of clamping chalk better, the quantity of said elastic guide is more than three, and evenly distribution is fixed on the madial wall of cylindrical sleeve.
As preferably, the axial length of said elastic guide is shorter than or equals the axial length of cylindrical sleeve.
As preferably, the outside of said elastic guide is smooth curved surface shape.
As the utility model preferred embodiment: the quantity of said elastic guide is five, and the axial length of elastic guide equals the axial length of cylindrical sleeve.
The utility model is compared than prior art, has the following advantages and beneficial effect:
(1) the utility model can insert chalk in the cylindrical sleeve and use, and avoids the problem of making hand in the chalk use dirty; Divide equally in the chalk sleeve and be distributed with elastic guide, the purpose that elastic guide plays the clamping chalk and guides chalk to move at cylindrical sleeve.When chalk moved to suitable position, elastic guide blocked chalk, and the convergent force of cylindrical sleeve further grasps chalk simultaneously, makes the teacher use chalk very convenient, and chalk also is difficult for being fractureed; Position in the cavity of chalk in chalk sleeve can be regulated, and satisfies the problem that can constantly shorten when chalk uses, even short a little chalk also can use by this chalk sleeve, thereby practice thrift the chalk resource.
(2) the utlity model has advantages such as simple in structure, convenient and practical, safe and reliable, efficient quick, can avoid chalk dust to adhere on hand, solved chalk and write and always be stained with the trouble of chalk dust in vain on the defensive position.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the axial cutaway view of the utility model.
Wherein, the pairing name of the Reference numeral in the accompanying drawing is called:
The 1-cylindrical sleeve, 2-elastic guide, 3-curved surface shape.
The specific embodiment
Below in conjunction with embodiment the utility model is done to specify further:
Embodiment
Like Fig. 1～shown in Figure 2, a kind of chalk sleeve comprises cylindrical sleeve 1, and cylindrical sleeve 1 is a hollow structure, in its inner chamber axially five equilibrium be provided with elastic guide 2.The elastic guide 2 of present embodiment can be by the elastic rubber material manufacturing, can certainly be by the elastic plastic material manufacturing.The cylindrical sleeve 1 of present embodiment is also formed by the elastomeric material manufacturing, and cylindrical sleeve 1 is preferably made with elastic plastic material.
The quantity of elastic guide 2 is more than three, and evenly distribution is fixed on the madial wall of cylindrical sleeve 1.The transverse gage of elastic guide 2 is less than or equal to the transverse gage of cylindrical sleeve 1.The axial length of elastic guide 2 is shorter than or equals the axial length of cylindrical sleeve 1.
In order to realize present embodiment better, the quantity of above-mentioned elastic guide 2 is five, and the axial length of elastic guide 2 equals the axial length of cylindrical sleeve 1, and the transverse gage of elastic guide 2 be about cylindrical sleeve 1 transverse gage 1/2nd.
The outside of above-mentioned elastic guide 2 is smooth curved surface shape 3, and this curved surface shape 3 is preferably circular shape, and constitutes concentric circles with the circular arc of cylindrical sleeve 1.
During use, the teacher can be loaded on chalk in the cylindrical sleeve 1 of chalk sleeve, and by the chalk sleeve clamping.When writing, the teacher hands chalk sleeve, and staff needn't directly touch chalk just can realize the purpose of writing, and chalk dust can not pollute our hand, teaching materials and textbook, safety and sanitation like this.This chalk sleeve is simple in structure, not only is fit to whole chalk, goes back the use of tailored powder nib, and uses health, has practiced thrift resource.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (7)
1. a chalk sleeve comprises cylindrical sleeve (1), it is characterized in that: said cylindrical sleeve (1) is a hollow structure, and axial five equilibrium is provided with elastic guide (2) in its inner chamber.
2. according to the described chalk sleeve of claim 1, it is characterized in that: said elastic guide (2) is by elastic caoutchouc or elastic plastic material manufacturing.
3. according to claim 1 or 2 described chalk sleeves, it is characterized in that: the transverse gage of said elastic guide (2) is less than or equal to the transverse gage of cylindrical sleeve (1).
4. according to the described chalk sleeve of claim 3, it is characterized in that: the quantity of said elastic guide (2) is more than three, and evenly distribution is fixed on the madial wall of cylindrical sleeve (1).
5. according to claim 1 or 4 described chalk sleeves, it is characterized in that: the axial length of said elastic guide (2) is shorter than or equals the axial length of cylindrical sleeve (1).
6. according to the described chalk sleeve of claim 4, it is characterized in that: the outside of said elastic guide (2) is smooth curved surface shape (3).
7. according to the described chalk sleeve of claim 5, it is characterized in that: the quantity of said elastic guide (2) is five, and the axial length of elastic guide (2) equals the axial length of cylindrical sleeve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205242865U CN202399710U (en) | 2011-12-15 | 2011-12-15 | Chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205242865U CN202399710U (en) | 2011-12-15 | 2011-12-15 | Chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202399710U true CN202399710U (en) | 2012-08-29 |
Family
ID=46697383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205242865U Expired - Fee Related CN202399710U (en) | 2011-12-15 | 2011-12-15 | Chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202399710U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106042723A (en) * | 2016-06-26 | 2016-10-26 | 钱煜琴 | Improved chalk cover |
| CN111038149A (en) * | 2019-12-25 | 2020-04-21 | 傅社敏 | Improved generation is blackboard for political education |
| JP2024000940A (en) * | 2022-06-21 | 2024-01-09 | 敏実 福留 | chalk holder |
-
2011
- 2011-12-15 CN CN2011205242865U patent/CN202399710U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106042723A (en) * | 2016-06-26 | 2016-10-26 | 钱煜琴 | Improved chalk cover |
| CN106042723B (en) * | 2016-06-26 | 2018-06-26 | 钱煜琴 | A kind of modified chalk casing |
| CN111038149A (en) * | 2019-12-25 | 2020-04-21 | 傅社敏 | Improved generation is blackboard for political education |
| JP2024000940A (en) * | 2022-06-21 | 2024-01-09 | 敏実 福留 | chalk holder |
| JP7776707B2 (en) | 2022-06-21 | 2025-11-27 | 敏実 福留 | chalk holder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202399710U (en) | Chalk sleeve | |
| CN201863554U (en) | Chalk clamping fixing device used for teaching | |
| CN204547449U (en) | One regulates chalk sleeve automatically | |
| CN201471923U (en) | Chalk clamping holder for teaching | |
| CN204432073U (en) | A kind of chalk holder | |
| CN205238929U (en) | Pupil uses holds a ware | |
| CN202062871U (en) | Chalk writing spacer sleeve for teaching | |
| CN201907294U (en) | Clamp holder for writing with chalk | |
| CN201979873U (en) | Chalk pipe sleeve | |
| CN201371653Y (en) | Chalk sleeve | |
| CN202021972U (en) | Bamboo chalk sleeve | |
| CN204160945U (en) | A kind of novel pencil | |
| CN204622905U (en) | A kind of Portable chalk pen cap | |
| CN202573422U (en) | Chalk sleeve | |
| CN204382889U (en) | A kind of different people of can agreeing with uses a posture to hold the pen of handle | |
| CN201863545U (en) | Three-edged fountain pen | |
| CN202641096U (en) | Detachable finger protective cover for pencils | |
| CN204659264U (en) | Be with magnetic chalk block set | |
| CN203110620U (en) | Modified chalk sleeve for teaching | |
| CN202986476U (en) | Oil leakage preventing signature pen for students | |
| CN203418892U (en) | Chalk cover | |
| CN203110619U (en) | Modified chalk sleeve | |
| CN201816316U (en) | Chalk sleeve | |
| CN203317952U (en) | Multipurpose teaching pen | |
| CN202319414U (en) | Hand-gripping device for chalk |
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: 20120829 Termination date: 20121215 |