CN201102421Y - Electric eraser - Google Patents
Electric eraser Download PDFInfo
- Publication number
- CN201102421Y CN201102421Y CNU2007200749167U CN200720074916U CN201102421Y CN 201102421 Y CN201102421 Y CN 201102421Y CN U2007200749167 U CNU2007200749167 U CN U2007200749167U CN 200720074916 U CN200720074916 U CN 200720074916U CN 201102421 Y CN201102421 Y CN 201102421Y
- Authority
- CN
- China
- Prior art keywords
- blackboard
- roll shaft
- eraser
- driving
- blackboard eraser
- 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 discloses an electric blackboard eraser which comprises a roller shaft (1) and a board eraser (2) installed at the roller shaft. The board eraser is clung to the surface of a blackboard (11). The upper and the lower frames of the blackboard are respectively provided with a slideway (4), the inside of which is respectively embedded with a transmission chain (5). The upper and the lower ends of the roller shaft are respectively fixed at the transmission chains by connecting rods (3). The two ends of each transmission chain are respectively provided with a gear (6). The gears of the two transmission chains at the same side are respectively connected with bidirectional motors (7). The two sides of the roller shaft are respectively equipped with a dustproof board (9), one side of which is fixed on the roller shaft, and the other side of the dustproof board is close to the surface of the blackboard. The inside of the lower end of the dustproof is fixedly provided with a chalk dust collecting box (10). The electric blackboard eraser of the utility model can erase every corner on the surface of the blackboard easily and can prevent the chalk dust from flying everywhere, which is convenient, saves labor and is clean and sanitary.
Description
Technical field
The utility model relates to teaching stationery, is specifically related to a kind of blackboard eraser.
Background technology
Blackboard is a kind of requisite educational aid, but when erasing the board, and is very inconvenient when the chalk writing of blackboard wiping eminence, the smaller student of height especially, and can only step down on stool or other article bed hedgehopping can obtain.So very dangerous, and need climb up repeatedly and climb down.In addition, when erasing the board, chalk dust can waft to such an extent that be everywhere, is unfavorable for very much health.
Therefore, need a kind of blackboard eraser, energy Automatic erasing blackboard each several part, and can prevent effectively that chalk dust from descending slowly and lightly.
Summary of the invention
The utility model aims to provide a kind of electric blackboard eraser, the energy automatic-cleaning backboard, and can prevent that chalk dust from flying upward.
Be achieved through the following technical solutions:
A kind of electric blackboard eraser comprises roll shaft 1 and the blackboard eraser 2 that is installed on the roll shaft, and blackboard eraser is close to the surface of blackboard 11;
The upper and lower frames of blackboard respectively is equipped with in 4, two chutes of a chute and is embedded with driving-chain 5 respectively, and roll shaft is fixed on the driving-chain by connecting rod 3 respectively at two ends up and down;
The two ends of each driving-chain respectively have the same side gear of 6, two driving-chains of a gear to be connected with either-rotation motor 7 respectively.
A limit switch 8 is respectively installed at the two ends of one of them driving-chain.
Respectively there is a dust excluding plate both sides of roll shaft, and a side of dust excluding plate is fixed on the roll shaft, and opposite side is pressed close to the surface of blackboard.Near a side of blackboard chalk dust is installed in the dust excluding plate bottom and collects box 10.
Electric blackboard eraser of the present utility model, each corner on blackboard wiping surface at an easy rate, and prevented that chalk dust from flying upward everywhere, not only convenient and strength-saving but also sanitation and hygiene.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the schematic diagram of roll shaft side structure
Fig. 3 is roll shaft and driving-chain annexation schematic diagram
Fig. 4 is the structural representation that dust excluding plate and chalk dust are collected box
Wherein, the 1-roll shaft, the 2-blackboard eraser, the 3-connecting rod, the 4-chute, the 5-driving-chain, the 6-gear, the 7-either-rotation motor, the 8-limit switch, the 9-dust excluding plate, the 10-chalk dust is collected box, 11-blackboard
The specific embodiment
As shown in figures 1 and 3, blackboard 11 a chute 4 respectively is installed up and down, chute is embedded with driving-chain 5 respectively, respectively there is a gear 6 at the two ends of driving-chain, wherein left side gear is connected with either-rotation motor 7 respectively.
Respectively there is a limit switch 8 the driving-chain both sides that are positioned at the bottom.
Respectively there is a dust excluding plate 9 both sides of roll shaft.One side of dust excluding plate is fixed on the roll shaft, and opposite side is pressed close to the surface of blackboard.Near a side of blackboard chalk dust is installed in the dust excluding plate bottom and collects box 10.As Fig. 2, shown in Figure 4.
Open switch during use, the either-rotation motor operation, driven gear rotates, and then driving-chain slides, and drives the roll shaft level to motion.Therefore, can blackboard wiping with the blackboard eraser of blackboard surface applying.The chalk dust that falls down is stopped by dust excluding plate, can not descend slowly and lightly to the outside, and the chalk dust that can fall into the dust excluding plate bottom is collected box 10.
Blackboard eraser, dust excluding plate and chalk dust collection box can be pulled down and clean.
When roll shaft moves to blackboard left end or right-hand member, run into limit switch, then either-rotation motor cuts out, the roll shaft stop motion.
Claims (4)
1, a kind of electric blackboard eraser is characterized in that, comprises roll shaft (1) and is installed in blackboard eraser (2) on the roll shaft, and blackboard eraser is close to the surface of blackboard (11);
The upper and lower frames of blackboard respectively has a chute (4), is embedded with driving-chain (5) in two chutes respectively, and roll shaft is fixed on the driving-chain by connecting rod (3) respectively at two ends up and down;
Respectively there is a gear (6) at the two ends of each driving-chain, and the same side gear of two driving-chains is connected with either-rotation motor (7) respectively.
2, the electric blackboard eraser said of claim 1 is characterized in that the two ends of described one of them driving-chain are equipped with limit switch (8).
3, the said electric blackboard eraser of claim 1 is characterized in that, a dust excluding plate (9) is respectively installed in described roll shaft both sides, and dust excluding plate one side is fixed on the roll shaft, and opposite side is pressed close to the surface of blackboard.
4, the said electric blackboard eraser of claim 3 is characterized in that, the inboard of described dust excluding plate lower end is fixed with chalk dust and collects box (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200749167U CN201102421Y (en) | 2007-09-21 | 2007-09-21 | Electric eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200749167U CN201102421Y (en) | 2007-09-21 | 2007-09-21 | Electric eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201102421Y true CN201102421Y (en) | 2008-08-20 |
Family
ID=39949441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200749167U Expired - Fee Related CN201102421Y (en) | 2007-09-21 | 2007-09-21 | Electric eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201102421Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228426A (en) * | 2014-08-29 | 2014-12-24 | 郑中富 | Full-automatic teaching blackboard cleaning machine |
| CN104527276A (en) * | 2014-12-15 | 2015-04-22 | 广西大学 | Blackboard eraser |
| CN109367298A (en) * | 2018-12-19 | 2019-02-22 | 福建工程学院 | A kind of automatic eraser device |
-
2007
- 2007-09-21 CN CNU2007200749167U patent/CN201102421Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228426A (en) * | 2014-08-29 | 2014-12-24 | 郑中富 | Full-automatic teaching blackboard cleaning machine |
| CN104228426B (en) * | 2014-08-29 | 2016-08-24 | 郑中富 | A kind of blackboard for education Full-automatic cleaning machine |
| CN104527276A (en) * | 2014-12-15 | 2015-04-22 | 广西大学 | Blackboard eraser |
| CN109367298A (en) * | 2018-12-19 | 2019-02-22 | 福建工程学院 | A kind of automatic eraser device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |