CN202062871U - Chalk writing spacer sleeve for teaching - Google Patents
Chalk writing spacer sleeve for teaching Download PDFInfo
- Publication number
- CN202062871U CN202062871U CN201120203329XU CN201120203329U CN202062871U CN 202062871 U CN202062871 U CN 202062871U CN 201120203329X U CN201120203329X U CN 201120203329XU CN 201120203329 U CN201120203329 U CN 201120203329U CN 202062871 U CN202062871 U CN 202062871U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- slide block
- chalk
- wall
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The utility model discloses a chalk writing spacer sleeve for teaching, relating to the technical field of an auxiliary set for teaching. The chalk writing spacer sleeve for teaching consists of a sleeve, an elastic rubber ring, a slide block, a supporting spring, a limit pin and a limit nut and is characterized in that the inner wall of the opening end of the sleeve, which is provided with screw threads on the outer wall, is connected and fixed with the elastic rubber ring of which the inner diameter is smaller than the diameter of a chalk; the slide block with the inner diameter corresponding to the inner diameter of the sleeve is sheathed inside the sleeve in a slide way; the supporting spring is connected between the lower end of the slide block and the inner wall at the bottom of the sleeve; two limit pins fixed and connected with the upper face of the side wall of the slide block respectively penetrate through mutually symmetrical axial through holes on the wall of the sleeve to expose outside the sleeve; and the outer wall of the sleeve on the limit pins is in threaded connection with the limit nut. The chalk writing spacer sleeve for teaching is simply structured and convenient to use, can prevent hands from being in direct contact with the chalk, maintains cleanliness of hands and reduces contamination.
Description
Technical field
The utility model relates to teaching appurtenance technical field, and specifically a kind of teaching is write separation sleeve with chalk.
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 and write separation sleeve with chalk.
The purpose of this utility model is achieved in that this teaching writes separation sleeve by sleeve with chalk, the elastic caoutchouc circle, slide block, support spring, spacer pin, stop nut is formed, the sleeve opening end inwall that outer wall is provided with screw thread is being connected and fixed the elastic caoutchouc circle of internal diameter less than the chalk diameter, sleeve inner slip suit the slide block that adapts with sleeve diameter, the upper end of slide block face is provided with the circular groove that adapts with corresponding internal diameter of elastic caoutchouc circle and chalk diameter, be connected with support spring between the inwall at the bottom of slide block lower end and the sleeve tube, be exposed at the sleeve outside after two spacer pins that slider side wall is connected and fixed above pass axially extending bore symmetrical above the sleeve wall respectively, stop nut is being threaded on the sleeve outer wall of spacer pin top.
During use, just hand-holdable sleeve is write after chalk being passed the elastic caoutchouc circle and inserting groove above the slide block, and chalk stretches out the length of sleeve can be regulated by stop nut.
Advantage of the present utility model: simple in structure, easy to use, can avoid hand directly to contact with chalk, keep the sanitation and hygiene of hand, reduce and pollute.
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 write separation sleeve by sleeve 1 with chalk, elastic caoutchouc circle 2, slide block 3, support spring 4, spacer pin 5, stop nut 6 is formed, the sleeve 1 opening end inwall that outer wall is provided with screw thread is being connected and fixed the elastic caoutchouc circle 2 of internal diameter less than the chalk diameter, sleeve 1 slides within suit the slide block 3 that adapts with sleeve 1 internal diameter, slide block 3 upper surfaces are provided with the circular groove that adapts with elastic caoutchouc circle 2 corresponding internal diameters and chalk diameter, be connected with support spring 4 between the inwall at the bottom of 1 in slide block 3 lower ends and the sleeve, two spacer pins 5 that slide block 3 sidewalls are connected and fixed above are exposed at sleeve 1 outside after passing axially extending bore 7 symmetrical above sleeve 1 barrel respectively, and stop nut 6 is being threaded on sleeve 1 outer wall of spacer pin 5 tops.
Claims (1)
1. a teaching is write separation sleeve with chalk, by sleeve (1), elastic caoutchouc circle (2), slide block (3), support spring (4), spacer pin (5), stop nut (6) is formed, it is characterized in that outer wall is provided with the sleeve of screw thread (1) opening end inwall and is being connected and fixed the elastic caoutchouc circle (2) of internal diameter less than the chalk diameter, sleeve (1) slides within suit the slide block (3) that adapts with sleeve (1) internal diameter, slide block (3) upper surface is provided with the circular groove that adapts with corresponding internal diameter of elastic caoutchouc circle (2) and chalk diameter, be connected with support spring (4) between slide block (3) lower end and sleeve (1) the tube end inwall, two spacer pins (5) that slide block (3) sidewall is connected and fixed above pass sleeve (1) respectively and are exposed at sleeve (1) outside behind the symmetrical axially extending bore (7) above the barrel, and stop nut (6) is being threaded on sleeve (1) outer wall of spacer pin (5) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120203329XU CN202062871U (en) | 2011-06-03 | 2011-06-03 | Chalk writing spacer sleeve for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120203329XU CN202062871U (en) | 2011-06-03 | 2011-06-03 | Chalk writing spacer sleeve for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202062871U true CN202062871U (en) | 2011-12-07 |
Family
ID=45056746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120203329XU Expired - Fee Related CN202062871U (en) | 2011-06-03 | 2011-06-03 | Chalk writing spacer sleeve for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202062871U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170061843A (en) * | 2015-11-27 | 2017-06-07 | 류성민 | Eraser Case |
| CN108032648A (en) * | 2017-12-25 | 2018-05-15 | 朱小菊 | Parallel lines renderer |
-
2011
- 2011-06-03 CN CN201120203329XU patent/CN202062871U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170061843A (en) * | 2015-11-27 | 2017-06-07 | 류성민 | Eraser Case |
| KR101958197B1 (en) | 2015-11-27 | 2019-07-02 | 류성민 | Eraser Case |
| CN108032648A (en) * | 2017-12-25 | 2018-05-15 | 朱小菊 | Parallel lines renderer |
| CN108032648B (en) * | 2017-12-25 | 2020-05-05 | 台州市黄岩日隆模具厂(普通合伙) | Parallel straight line drawing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202062871U (en) | Chalk writing spacer sleeve for teaching | |
| CN201863554U (en) | Chalk clamping fixing device used for teaching | |
| CN201366869Y (en) | Chalk sleeve without sticking hands | |
| CN202169800U (en) | Chalk writing isolation sleeve | |
| CN201745300U (en) | Teaching chalk clamping and fixing device | |
| CN201471923U (en) | Chalk clamping holder for teaching | |
| CN201721179U (en) | Teaching chalk retainer | |
| CN202106729U (en) | Clamping and fixing sleeve for chalk writing | |
| CN202641103U (en) | Chalk writing isolation sleeve for teaching | |
| CN201907294U (en) | Clamp holder for writing with chalk | |
| CN204622905U (en) | A kind of Portable chalk pen cap | |
| CN202046052U (en) | Lifting type chalk sleeve | |
| CN201646085U (en) | Chalk clamping holder used for teaching | |
| CN202399710U (en) | Chalk sleeve | |
| CN201456686U (en) | Chalk clamping and fixing device for teaching | |
| CN202753629U (en) | Multipurpose pen cap | |
| CN202378495U (en) | Chalk writing aid for teaching | |
| CN201721208U (en) | Sucking-disc-type cyclograph | |
| CN202806037U (en) | Convenient chalk cover | |
| CN2820559Y (en) | Chalk sleeve | |
| CN2831299Y (en) | Teacher's pointer | |
| CN204160945U (en) | A kind of novel pencil | |
| CN202293828U (en) | Residual chalk reusing sleeve | |
| CN205326570U (en) | Teaching dedicated chalk clip | |
| CN203046576U (en) | 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: 20111207 Termination date: 20120603 |