CN104228405A - Chalk sleeve - Google Patents
Chalk sleeve Download PDFInfo
- Publication number
- CN104228405A CN104228405A CN201310238061.7A CN201310238061A CN104228405A CN 104228405 A CN104228405 A CN 104228405A CN 201310238061 A CN201310238061 A CN 201310238061A CN 104228405 A CN104228405 A CN 104228405A
- Authority
- CN
- China
- Prior art keywords
- chalk
- sleeve
- telescopic
- telescopic body
- pullover
- 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
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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a chalk sleeve. The chalk sleeve is characterized by comprising a sleeve head clamping a chalk and a telescopic sleeve body for containing the chalk, the telescopic sleeve body is formed by connecting multiple hollow casing pipes in a sleeved mode layer by layer, an inner check ring and an outer check ring are arranged at the ends of each casing pipe, and the sleeve head is arranged in the casing pipe at the bottom of the telescopic sleeve body. According to the chalk sleeve, the chalk is clamped through the sleeve head, and the length of the telescopic sleeve body can be adjusted at will, so that the chalk sleeve is suitable for different chalks, the chalks can be used to the maximum extent, and resources are saved. The chalk sleeve is simple in structure, novel in design, convenient to use and capable of meeting the requirements of people.
Description
Technical field
The present invention relates to a kind of educational aid, a kind of chalk sleeve of special design.
Background technology
Chalk is the instrument widely used in daily life, is for general on blackboard and writes.Teacher uses the maximum crowd of chalk, and class their full hand that gets off is all chalk dust.Chalk dust is easy to burn the skin of hand, affects the healthy of teacher; In addition, the flintiness of chalk is poor, and chalk is in the past easy to fracture, and affects teacher on the one hand and attends class, and the chalk fractureed on the other hand is very short, can not re-use, cause waste.
Summary of the invention
The present invention, in order to make up the deficiencies in the prior art, provides simple, the futuramic chalk sleeve of a kind of structure.
The present invention is achieved through the following technical solutions:
A kind of chalk sleeve, it is characterized in that: the pullover telescopic body with depositing chalk comprising clamping chalk, described telescopic body is socketed to form layer by layer by the sleeve pipe of some hollow, and described cannula tip is provided with inner shield ring and outer back-up ring, is provided with pullover in the sleeve pipe of the bottom of described telescopic body.
The invention has the beneficial effects as follows: chalk sleeve of the present invention, clamp chalk by pullover, telescopic body can regulate length arbitrarily, to adapt to different chalks, can utilize chalk to greatest extent, economize on resources; Structure of the present invention is simple, novel in design, easy to use, can meet the needs of people.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing 1 is main TV structure schematic diagram of the present invention;
In figure, 1 is pullover, 2 telescopic bodies, 3 sleeve pipes, 4 inner shield rings, 5 outer back-up rings.
Detailed description of the invention
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment is a kind of chalk sleeve, it is characterized in that: comprise pullover 1 of clamping chalk and deposit the telescopic body 2 of chalk, described telescopic body 2 is socketed to form layer by layer by the sleeve pipe 3 of some hollow, described sleeve pipe 3 end is provided with inner shield ring 4 and outer back-up ring 5, is provided with pullover 1 in the sleeve pipe 3 of the bottom of described telescopic body 2.Chalk sleeve of the present invention, by pullover 1 clamping chalk, telescopic body 2 can regulate length arbitrarily, to adapt to different chalks, can utilize chalk to greatest extent, economize on resources; Structure of the present invention is simple, novel in design, easy to use, can meet the needs of people.
Claims (1)
1. a chalk sleeve, it is characterized in that: comprise pullover (1) of clamping chalk and deposit the telescopic body (2) of chalk, described telescopic body (2) is socketed to form layer by layer by the sleeve pipe (3) of some hollow, described sleeve pipe (3) end is provided with inner shield ring (4) and outer back-up ring (5), is provided with pullover (1) in the sleeve pipe (3) of the bottom of described telescopic body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310238061.7A CN104228405A (en) | 2013-06-17 | 2013-06-17 | Chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310238061.7A CN104228405A (en) | 2013-06-17 | 2013-06-17 | Chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104228405A true CN104228405A (en) | 2014-12-24 |
Family
ID=52217668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310238061.7A Pending CN104228405A (en) | 2013-06-17 | 2013-06-17 | Chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104228405A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946397A (en) * | 2015-10-02 | 2016-09-21 | 刘乐凝 | Chalk protection sleeve |
-
2013
- 2013-06-17 CN CN201310238061.7A patent/CN104228405A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946397A (en) * | 2015-10-02 | 2016-09-21 | 刘乐凝 | Chalk protection sleeve |
| CN106079971A (en) * | 2015-10-02 | 2016-11-09 | 刘乐凝 | A kind of chalk of band sheath |
| CN105946397B (en) * | 2015-10-02 | 2017-07-11 | 刘乐凝 | A kind of chalk sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |