CN201745300U - Teaching chalk clamping and fixing device - Google Patents
Teaching chalk clamping and fixing device Download PDFInfo
- Publication number
- CN201745300U CN201745300U CN2010202403269U CN201020240326U CN201745300U CN 201745300 U CN201745300 U CN 201745300U CN 2010202403269 U CN2010202403269 U CN 2010202403269U CN 201020240326 U CN201020240326 U CN 201020240326U CN 201745300 U CN201745300 U CN 201745300U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- chalk
- teaching
- fixing device
- slide block
- 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
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Abstract
The utility model provides a teaching chalk clamping and fixing device and relates to the technical field of teaching aids, which comprises a sleeve (1), a barrel cover (2), a push rod (3) and a slide block (4). The teaching chalk clamping and fixing device is characterized in that the front end of the sleeve (1) with the inner diameter matched with the outer diameter of a chalk is provided with an arc-shaped clamping piece (5), the outer wall of the back end is in threaded connection with the barrel cover (2) provided with the push rod (3) in the center of the inner wall at the bottom of the cover, and the front end of the push rod (3) is rotationally connected with a slide block in the sleeve (1), wherein the slide block is matched with the inner diameter of the sleeve (1). The teaching chalk clamping and fixing device has simple structure and convenient carrying; and after the barrel cover is rotated, the chalk can be gradually pushed out by the slide block, and then users can write by holding the sleeve, thereby the teaching chalk clamping and fixing device can prevent hands from directly coming into contact with the chalk to keep the hands clean and sanitary and reduce the pollution.
Description
Technical field
The utility model relates to the teaching aid technical field, specifically a kind of teaching chalk clamp-on holder.
Background technology
Chalk is the staple that school teacher writes on blackboard, points directly to contact with chalk when writing, and often expires the powder that hand is a white after class for one, and the adversary pollutes, healthy unfavorable to the people.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of user's hand directly not contact with chalk, can avoid pointing the teaching of being polluted chalk clamp-on holder.
The purpose of this utility model is achieved in that this teaching is made up of sleeve, cover, push rod, slide block with chalk clamp-on holder, the barrel forward end that internal diameter and chalk external diameter adapt is provided with arc clip, the rear end outer wall thread is connecting and is covering the cover that inwall center, the end is provided with push rod, and the slide block that adapts with sleeve diameter in push rod front end and the sleeve is rotationally connected.
During use, chalk in barrel forward end is inserted sleeve and withstand on above the slide block, can be write after utilizing the arc clip of barrel forward end that chalk is gripped.
Advantage of the present utility model: simple in structure, use, easy to carry is rotated the cover rear slider and chalk can be released gradually, and hand-held sleeve just can be write, and can avoid hand directly to contact with chalk, keeps the sanitation and hygiene of hand, reduces and pollutes.
Description of drawings
Accompanying drawing is a structure cutaway view of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail: this teaching is made up of sleeve 1, cover 2, push rod 3, slide block 4 with the chalk clamp-on holder, sleeve 1 front end that internal diameter and chalk external diameter adapt is provided with arc clip 5, the rear end outer wall thread is connecting and is covering the cover 2 that inwall center, the end is provided with push rod 3, and the slide block 4 that adapts with sleeve 1 internal diameter in push rod 3 front ends and the sleeve 1 is rotationally connected.
Claims (1)
1. teaching chalk clamp-on holder, form by sleeve (1), cover (2), push rod (3), slide block (4), it is characterized in that sleeve (1) front end that internal diameter and chalk external diameter adapt is provided with arc clip (5), the rear end outer wall thread is connecting the cover (2) that inwall center at the bottom of the lid is provided with push rod (3), and the slide block (4) that adapts with sleeve (1) internal diameter in push rod (3) front end and the sleeve (1) is rotationally connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202403269U CN201745300U (en) | 2010-06-29 | 2010-06-29 | Teaching chalk clamping and fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202403269U CN201745300U (en) | 2010-06-29 | 2010-06-29 | Teaching chalk clamping and fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201745300U true CN201745300U (en) | 2011-02-16 |
Family
ID=43579972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202403269U Expired - Fee Related CN201745300U (en) | 2010-06-29 | 2010-06-29 | Teaching chalk clamping and fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201745300U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722945A (en) * | 2013-12-25 | 2014-04-16 | 宁波江北瑞臣工艺品设计有限公司 | Pen prevented from being opened by child |
| CN103722942A (en) * | 2013-12-25 | 2014-04-16 | 宁波江北瑞臣工艺品设计有限公司 | Pen prevented from being opened by child |
| CN103754011A (en) * | 2013-12-25 | 2014-04-30 | 宁波江北瑞臣工艺品设计有限公司 | Pen capable of preventing itself from being opened by children |
-
2010
- 2010-06-29 CN CN2010202403269U patent/CN201745300U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722945A (en) * | 2013-12-25 | 2014-04-16 | 宁波江北瑞臣工艺品设计有限公司 | Pen prevented from being opened by child |
| CN103722942A (en) * | 2013-12-25 | 2014-04-16 | 宁波江北瑞臣工艺品设计有限公司 | Pen prevented from being opened by child |
| CN103754011A (en) * | 2013-12-25 | 2014-04-30 | 宁波江北瑞臣工艺品设计有限公司 | Pen capable of preventing itself from being opened by children |
| CN103754011B (en) * | 2013-12-25 | 2016-07-06 | 宁波江北瑞臣工艺品设计有限公司 | The pen that a kind of child cannot open |
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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: 20110216 Termination date: 20120629 |