CN202517975U - Chalk writing automatic sweeping device - Google Patents
Chalk writing automatic sweeping device Download PDFInfo
- Publication number
- CN202517975U CN202517975U CN2012200654806U CN201220065480U CN202517975U CN 202517975 U CN202517975 U CN 202517975U CN 2012200654806 U CN2012200654806 U CN 2012200654806U CN 201220065480 U CN201220065480 U CN 201220065480U CN 202517975 U CN202517975 U CN 202517975U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- sweeping device
- chalk
- automatic sweeping
- bar shaped
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
A chalk writing automatic sweeping device comprises sliding grooves (1) which are respectively disposed on an upper edge and a lower edge of a blackboard (2). Two strip-type erasers (3) are respectively arranged on a left side and a right side of the blackboard (2). An upper end and a lower end of each strip-type eraser (3) are respectively provided with a pulley (4). The pulleys (4) are respectively arranged in an upper sliding groove (1) and a lower sliding groove (1). The chalk writing automatic sweeping device has the advantages that a starting switch is turned on, the strip-type erasers can move back and forth and automatically erases the chalk writing on the blackboard, improves efficiency of cleaning the blackboard, can erase all the writing on the blackboard, and is simple in structure, convenient to use, time-saving and labor-saving.
Description
Technical field
The utility model relates to the realia technical field, the automatic sweeping device of a kind of specifically letter written with chalk.
Background technology
Chalk and blackboard are common teaching aids, but after writing on the blackboard is write completely, need wipe, for the not high student of height, and not a duck soup, and waste time and energy.
The utility model content
The purpose of the utility model provides the automatic sweeping device of a kind of letter written with chalk, need not manpower and can wipe writing on the blackboard automatically.
The automatic sweeping device of the utility model letter written with chalk; Comprise: the chute 1 that is arranged on blackboard 2 upper and lower edges; Blackboard 2 left sides and right side are respectively equipped with a bar shaped blackboard eraser 3, and said bar shaped blackboard eraser 3 upper/lower terminals are respectively equipped with a pulley 4, and pulley 4 is positioned at upper and lower chute 1 and horizontally slips.
Rope 5 is walked around fixed pulley 6, and two ends link to each other with said left and right bar shaped blackboard eraser 3 respectively; Fixed pulley 6 links to each other with the rotating shaft of motor 7; Said blackboard 2 the right and lefts are equipped with shutdown switch, reverser is housed in the middle of the blackboard 2 and opens switch.
Said motor 7, shutdown switch, reverser and unlatching switch are connected to a circuit with lead.
The advantage of the automatic sweeping device of the utility model letter written with chalk is: the closed switch of opening, bar shaped blackboard eraser move back and forth and brush the letter written with chalk on the blackboard automatically, improve the efficient that erases the board; And can wipe the whole writings on the blackboard; Simple in structure, easy to use, time saving and energy saving.
Description of drawings
Fig. 1 is the structural representation of the automatic sweeping device of letter written with chalk.
The specific embodiment
Below in conjunction with accompanying drawing; The utility model is further specified: according to shown in Figure 1; The automatic sweeping device of a kind of letter written with chalk comprises the chute 1 that is arranged on blackboard 2 upper and lower edges, and blackboard 2 left sides and right side are respectively equipped with a bar shaped blackboard eraser 3; Said bar shaped blackboard eraser 3 upper/lower terminals are respectively equipped with a pulley 4, and pulley 4 is positioned at upper and lower chute 1 and horizontally slips.
Rope 5 is walked around fixed pulley 6, and two ends link to each other with said left and right bar shaped blackboard eraser 3 respectively; Fixed pulley 6 links to each other with the rotating shaft of motor 7; Said blackboard 2 the right and lefts are equipped with shutdown switch, reverser is housed in the middle of the blackboard 2 and opens switch.
Said motor 7, shutdown switch, reverser and unlatching switch are connected to a circuit with lead.
The closed switch of opening, motor 7 rotates, rope 5 drives bar shaped blackboard eraser 3 inside erasing blackboards, bumps against reverser to the centre, and then bar shaped blackboard eraser 3 outwards moves, and bumps against shutdown switch to two edges, and then motor 7 stops.
Claims (3)
1. automatic sweeping device of letter written with chalk; It is characterized in that: comprise the chute (1) that is arranged on the upper and lower edge of blackboard (2); Blackboard (2) left side and right side are respectively equipped with a bar shaped blackboard eraser (3); Said bar shaped blackboard eraser (3) upper/lower terminal is respectively equipped with a pulley (4), and pulley (4) is positioned at upper and lower chute (1).
2. the automatic sweeping device of letter written with chalk as claimed in claim 1 is characterized in that: rope (5) is walked around fixed pulley (6), and two ends link to each other with said left and right bar shaped blackboard eraser (3) respectively; Said fixed pulley (6) links to each other with the rotating shaft of motor (7).
3. according to claim 1 or claim 2 the automatic sweeping device of letter written with chalk, it is characterized in that: said blackboard (2) the right and left is equipped with shutdown switch, reverser is housed in the middle of the blackboard (2) and opens switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200654806U CN202517975U (en) | 2012-02-27 | 2012-02-27 | Chalk writing automatic sweeping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200654806U CN202517975U (en) | 2012-02-27 | 2012-02-27 | Chalk writing automatic sweeping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202517975U true CN202517975U (en) | 2012-11-07 |
Family
ID=47100937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200654806U Expired - Fee Related CN202517975U (en) | 2012-02-27 | 2012-02-27 | Chalk writing automatic sweeping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202517975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020867A (en) * | 2016-02-02 | 2017-08-08 | 上海市格致中学 | A kind of intelligent distant control blackboard |
-
2012
- 2012-02-27 CN CN2012200654806U patent/CN202517975U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020867A (en) * | 2016-02-02 | 2017-08-08 | 上海市格致中学 | A kind of intelligent distant control blackboard |
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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: 20121107 Termination date: 20130227 |