Dust-absorbing blackboard eraser
The utility model relates to a dust-absorbing blackboard eraser which is provided with fluffy blocks for wipping a blackboard on both edges of one side of a box. The middle of the box is provided with a spiral brush, and the other side of the box is provided a box cover which can be opened and close...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The utility model relates to a dust-absorbing blackboard eraser which is provided with fluffy blocks for wipping a blackboard on both edges of one side of a box. The middle of the box is provided with a spiral brush, and the other side of the box is provided a box cover which can be opened and closed. When the utility model is used, the screw brush is rotated by frictional force to carry dust generated by wiping the blackboard into the box. Thereby, the dust is collected to avoid polluting classroom environment. The utility model has advantages of simple structure and convenient operation. |
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