CN2159319Y - Dust absorbing blackboard eraser - Google Patents
Dust absorbing blackboard eraser Download PDFInfo
- Publication number
- CN2159319Y CN2159319Y CN 93228063 CN93228063U CN2159319Y CN 2159319 Y CN2159319 Y CN 2159319Y CN 93228063 CN93228063 CN 93228063 CN 93228063 U CN93228063 U CN 93228063U CN 2159319 Y CN2159319 Y CN 2159319Y
- Authority
- CN
- China
- Prior art keywords
- wiping board
- dust
- motor
- blackboard eraser
- fan
- 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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- Brushes (AREA)
Abstract
The utility model relates to a dust absorbing blackboard eraser. The utility model has the technical proposal that the edge of the eraser is provided with a circle of air outlets, and the center of the eraser is provided with an air inlet. The back of the eraser is provided with a front cavity, and in the center of the front cavity, the back of the air inlet is provided with centrifugal net blade slices. The blades of the fan are in the direction of air suction, and a plurality of dust absorbing pieces are arranged evenly on the separating plate of the outer ring of the fan. Every dust absorbing piece is arranged backward in curve towards the rotation direction of the centrifugal fan, the back of the separating plate of the casing is fixed with a back cavity. The cavity is provided with a motor, the motor is fixed to the separating plate, and the motor drives the blades to rotate. The utility model has the advantages of absorbing all the erased dust, preventing the dust nuisance, sanitation and ensuring the teachers' bodies healthy.
Description
The utility model belongs to a kind of blackboard eraser.
At present the blackboard eraser that uses in the classroom by wiping board and be bonded on the wiping board the wiping head---felt product is formed, can wipe the chalk person's handwriting with it, but the while also stir chalk dust in a hubbub, have a strong impact on
The teacher's is healthy.
The purpose of this utility model provides a kind of chalkboard eraser that sops up dust.
The purpose of this utility model is achieved in that in the front of wiping board rub body, the air port is irised out at the edge of wiping board, there is air inlet at the center of wiping board, the back of wiping board is an ante-chamber, at the center of ante-chamber, there is the centrifugal fan blade back of air inlet, and fan blade is the air draught direction, the outer ring of fan is uniform several attached dirt sheets on dividing plate, and each attached dirt sheet is crooked backward the distribution to the centrifugal fan direction of rotation.The back that is fixed on the dividing plate of housing is a back cavity, in this chamber motor is arranged, and motor is fixed on the dividing plate, the rotation of motor-driven blade.Operation principle is: open motor, and fan blade rotation, when rub body was wiped down chalk dust, dust was sucked by fan, enters ante-chamber from air inlet, is thrown on the attached dirt sheet, and wind is gone out from air outlet, constitutes circulation.
The utility model is compared with blackboard eraser is arranged, and it can all suck the dust under wiping, and prevents dust from flying, and both health has guaranteed that again the teacher's is healthy.
Further specify the utility model below in conjunction with accompanying drawing.
Fig. 1 is front view of the present utility model (partly cuing open).
Fig. 2 is the cutaway view of Fig. 1 along the A-A line.
There is rub body front at circular wiping board 3, in the present embodiment, rub body is a hairbrush 12, also can select felt product for use, air port 2 is irised out at the edge of wiping board, there is air inlet 1 in the center of circle of wiping board, and the back of wiping board is an ante-chamber 11, has the back of center air inlet that fan blade 9 is arranged at ante-chamber, and be the air draught direction, the outer ring of fan blade, uniform eight attached dirt sheets 6 on dividing plate 7, each attached dirt sheet is crooked backward the distribution with respect to the fan direction of rotation, in the back of dividing plate is back cavity 10, direct current generator 8 is arranged in the back cavity, and motor is fixed on the dividing plate, the rotation of motor-driven blade.The 4th, clamp.With this clamp wiping board is fixed on the shell 5.Operation principle is: at first open motor, the fan blade rotation, when the hairbrush rub body wiped chalk dust, dust was sucked by fan, enters ante-chamber from air inlet, be thrown under the attached dirt sheet, wind is gone out from air outlet, constitutes circulation, when needing cleaning, take off clamp and wiping board successively, the dust that is deposited on the attached dirt sheet is cleared up away.
Claims (4)
1, a kind of dust absorption blackboard eraser, wiping board is arranged, rub body is arranged on the wiping board, it is characterized in that: the air port is irised out at the edge of wiping board, there is air inlet at the center of wiping board, the back of wiping board is an ante-chamber, at the center of ante-chamber, there is the centrifugal fan blade back of air inlet, and fan blade is the air draught direction, the outer ring of fan is uniform several attached dirt sheets on dividing plate, each attached dirt sheet is crooked backward the distribution to the centrifugal fan direction of rotation, and the back that is fixed on the dividing plate of housing is a back cavity, in this chamber motor is arranged, motor is fixed on the dividing plate, the rotation of motor-driven blade.
2, dust absorption blackboard eraser according to claim 1 is characterized in that: described rub body is a hairbrush.
3, dust absorption blackboard eraser according to claim 1 is characterized in that: described rub body is a felt.
4, dust absorption blackboard eraser according to claim 1 is characterized in that: wiping board and housing are fixing with clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93228063 CN2159319Y (en) | 1993-04-29 | 1993-04-29 | Dust absorbing blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93228063 CN2159319Y (en) | 1993-04-29 | 1993-04-29 | Dust absorbing blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2159319Y true CN2159319Y (en) | 1994-03-23 |
Family
ID=33805195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93228063 Expired - Fee Related CN2159319Y (en) | 1993-04-29 | 1993-04-29 | Dust absorbing blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2159319Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522859A (en) * | 2015-12-14 | 2016-04-27 | 商洛学院 | Rotary type electric blackboard eraser |
-
1993
- 1993-04-29 CN CN 93228063 patent/CN2159319Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522859A (en) * | 2015-12-14 | 2016-04-27 | 商洛学院 | Rotary type electric blackboard eraser |
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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 |