CN202986518U - Special blackboard capable of erasing characters automatically for school - Google Patents
Special blackboard capable of erasing characters automatically for school Download PDFInfo
- Publication number
- CN202986518U CN202986518U CN 201220733468 CN201220733468U CN202986518U CN 202986518 U CN202986518 U CN 202986518U CN 201220733468 CN201220733468 CN 201220733468 CN 201220733468 U CN201220733468 U CN 201220733468U CN 202986518 U CN202986518 U CN 202986518U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- winding shaft
- dust collecting
- erasing
- flexible blackboard
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a special blackboard capable of erasing characters automatically for a school. The special blackboard comprises a motor (1), a transmission (2), an upper reel (3), a lower reel (4), an erasing shaft (5), a flexible blackboard (6), a dust collecting groove (7), a chalk support (8), a dust scraping plate (9) and a fixing liner (10). The motor (1) drives the transmission (2), the upper reel (3), the lower reel (4) and the erasing shaft (5) sequentially. The flexible blackboard (6) wide in width forms a closed loop to be wound on the upper reel (3) and the lower reel (4) and moves vertically along with rotation. Powder erased off by the erasing shaft (5) falls into the bottom of the dust collecting groove (7) through the dust scraping plate (9). Writing area of the special blackboard is twice as large as that of a common fixed blackboard, and the special blackboard has an automatic character-erasing function and is convenient and fast and free of flying powder.
Description
Technical field
The utility model relates to a kind of school instruction device, especially a kind of school Special Automatic wiping word blackboard.
Background technology
Existing blackboard for attending class is generally used board making, and blackboard is fixed, and must wipe with blackboard eraser after writing letter written with chalk, not only wastes time and energy, and dust from flying, seriously polluted simultaneously, is harmful to academics and students' physical and mental health.
Summary of the invention
The purpose of this utility model is to provide a kind of a kind of school Special Automatic wiping word blackboard simple in structure, easy to use, with low cost.it comprises motor, speed changer, upper winding shaft, lower winding shaft, wipe the word axle, flexible blackboard, dust collecting trough, the chalk frame, scrape hawk and fixing liner plate, motor connects speed changer, speed changer connects upper winding shaft, lower winding shaft and wiping word axle, the wide cut flexible blackboard forms a closed loop and is looped around on upper winding shaft and lower winding shaft, wiping word axle upper limb and the flexible blackboard lower edge of outsourcing hairbrush are tangent, wipe word axle below be provided with two ends fixing scrape hawk, the top of scraping hawk is tangent with wiping word axle lower edge, be provided with the U-shaped dust collecting trough of a both ends of the surface sealing below flexible blackboard, above dust collecting trough, two length of sides of opening and lower winding shaft both sides are tangent, outwards be provided with the chalk frame on a dust collecting trough positive side channel mouth limit, be provided with a fixing liner plate in the inboard of the front of flexible blackboard one side, fixedly liner plate is close to the reverse side of flexible blackboard.Write area of the present utility model has increased by one times than common fixedly blackboard, and has the function of automatic character-erazing, and is convenient and swift, without dust from flying.
Description of drawings
Accompanying drawing is structural representation of the present utility model.
The specific embodiment
As shown in the figure, the Special Automatic wiping word of a kind of school blackboard comprises motor 1, speed changer 2, upper winding shaft 3, lower winding shaft 4, wipes word axle 5, flexible blackboard 6, dust collecting trough 7, chalk frame 8, scrapes hawk 9 and fixing liner plate 10.motor 1 connects speed changer 2, speed changer 2 connects upper winding shaft 3, lower winding shaft 4 and wiping word axle 5, wide cut flexible blackboard 6 forms a closed loop and is looped around on upper winding shaft 3 and lower winding shaft 4, wiping word axle 5 upper limbs and flexible blackboard 6 lower edges of outsourcing hairbrush are tangent, wipe word axle 5 belows be provided with two ends fixing scrape hawk 9, the top of scraping hawk 9 is tangent with wiping word axle 5 lower edges, be provided with the U-shaped dust collecting trough 7 of a both ends of the surface sealing below flexible blackboard 6, above dust collecting trough 7, two length of sides and lower winding shaft 4 both sides of opening are tangent, outwards be provided with chalk frame 8 on dust collecting trough 7 a positive side channel mouth limit, be provided with a fixing liner plate 10 in the inboard of the front of flexible blackboard 6 one side, fixedly liner plate 10 is close to the reverse side of flexible blackboard 6.Motor 1 is drive motor speed changer 2, upper winding shaft 3, lower winding shaft 4 and wiping word axle 5 successively, wide cut flexible blackboard 6 forms a closed loop and is looped around on upper winding shaft 3 and lower winding shaft 4, move up and down with rotation, the powder of wiping under 5 wipings of word axle falls into the bottom land of dust collecting trough 7 through scraping hawk 9.Write area of the present utility model has increased by one times than common fixedly blackboard, and has the function of automatic character-erazing, and is convenient and swift, without dust from flying.
Claims (1)
1. school's Special Automatic wiping word blackboard, comprise motor (1), speed changer (2), chalk frame (8), it is characterized in that: also comprise upper winding shaft (3), lower winding shaft (4), wipe word axle (5), flexible blackboard (6), dust collecting trough (7), scrape hawk (9) and fixing liner plate (10), motor (1) connects speed changer (2), speed changer (2) connects upper winding shaft (3), lower winding shaft (4) and wiping word axle (5), wide cut flexible blackboard (6) forms a closed loop and is looped around on upper winding shaft (3) and lower winding shaft (4), wiping word axle (5) upper limb and flexible blackboard (6) lower edge of outsourcing hairbrush are tangent, wipe word axle (5) below be provided with two ends fixing scrape hawk (9), the top of scraping hawk (9) is tangent with wiping word axle (5) lower edge, be provided with the U-shaped dust collecting trough (7) of a both ends of the surface sealing in the below of flexible blackboard (6), above dust collecting trough (7), two length of sides and lower winding shaft (4) both sides of opening are tangent, outwards be provided with chalk frame (8) on dust collecting trough (a 7) positive side channel mouth limit, be provided with a fixing liner plate (10) in the inboard of the front of flexible blackboard (6) one side, fixedly liner plate (10) is close to the reverse side of flexible blackboard (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220733468 CN202986518U (en) | 2012-12-19 | 2012-12-19 | Special blackboard capable of erasing characters automatically for school |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220733468 CN202986518U (en) | 2012-12-19 | 2012-12-19 | Special blackboard capable of erasing characters automatically for school |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202986518U true CN202986518U (en) | 2013-06-12 |
Family
ID=48557730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220733468 Expired - Fee Related CN202986518U (en) | 2012-12-19 | 2012-12-19 | Special blackboard capable of erasing characters automatically for school |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202986518U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669868A (en) * | 2015-02-06 | 2015-06-03 | 刘志彬 | Novel dust-free blackboard |
-
2012
- 2012-12-19 CN CN 201220733468 patent/CN202986518U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669868A (en) * | 2015-02-06 | 2015-06-03 | 刘志彬 | Novel dust-free 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: 20130612 Termination date: 20131219 |