CN104708942A - Chalk sleeve - Google Patents
Chalk sleeve Download PDFInfo
- Publication number
- CN104708942A CN104708942A CN201310686157.XA CN201310686157A CN104708942A CN 104708942 A CN104708942 A CN 104708942A CN 201310686157 A CN201310686157 A CN 201310686157A CN 104708942 A CN104708942 A CN 104708942A
- Authority
- CN
- China
- Prior art keywords
- chalk
- sleeve
- telescopic
- sleeve pipe
- telescopic body
- 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
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a chalk sleeve. The chalk sleeve is characterized by comprising a sleeve head used for tightly clamping chalk and a telescopic-type sleeve body used for containing the chalk. The telescopic-type sleeve body is formed by connecting of multiple hollow-out casing pipes layer by layer in a sleeving mode. The end of each casing pipe is provided with an inner stopping ring and an outer stopping ring. The sleeve head is arranged inside the casing pipe at the bottom of telescopic-type sleeve body. According to the chalk sleeve, the chalk is clamped by the sleeve head, the length of the telescopic-type sleeve body can be regulated at will to adapt to various chalk, the chalk can be maximally utilized, and resources are saved. The chalk sleeve has the advantages of being simple in structure, novel in design, convenient to use, and capable of meeting 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, described cannula tip is provided with inner shield ring and outer back-up ring, be provided with pullover in the sleeve pipe of the bottom of described telescopic body, at the bottom of the cylinder on the sleeve pipe of the final section of described telescopic body, be provided with sucker; Sleeve pipe between described inner shield ring and outer back-up ring is provided with connecting thread.
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; Chalk sleeve can be adsorbed on dais and place loss by the sucker 8 that telescopic body 2 is provided with; 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 structural representation of the present invention;
In figure, 1 is pullover, 2 telescopic bodies, 3 sleeve pipes, 4 inner shield rings, 5 outer back-up rings, at the bottom of 6, and 7 connecting threads, 8 suckers.
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, be provided with pullover 1 in the sleeve pipe 3 of the bottom of described telescopic body 2, at the bottom of the cylinder of the sleeve pipe 3 of the final section of described telescopic body 2,6 are provided with sucker 8; Sleeve pipe 3 between described inner shield ring 4 and outer back-up ring 5 is provided with connecting thread 7.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; Chalk sleeve can be adsorbed on dais and place loss by the sucker 8 that described telescopic body 2 is provided with; 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), be provided with pullover (1) in the sleeve pipe (3) of the bottom of described telescopic body (2), at the bottom of the cylinder on the sleeve pipe (3) of the final section of described telescopic body (2), (6) are provided with sucker (8); Sleeve pipe (3) between described inner shield ring (4) and outer back-up ring (5) is provided with connecting thread (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310686157.XA CN104708942A (en) | 2013-12-16 | 2013-12-16 | Chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310686157.XA CN104708942A (en) | 2013-12-16 | 2013-12-16 | Chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104708942A true CN104708942A (en) | 2015-06-17 |
Family
ID=53408887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310686157.XA Pending CN104708942A (en) | 2013-12-16 | 2013-12-16 | Chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104708942A (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
- 2013-12-16 CN CN201310686157.XA patent/CN104708942A/en active Pending
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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150617 |