Automatic blackboard eraser

The utility model relates to an automatic blackboard eraser, including motor no. 1, motor no. 2, rack, gear, lead screw, supporter, spacing, position limiting clamp, motor no. 1 and screw connection, motor no. 1 take the kinetodesma thick stick rotatory, and the lead screw is connected with the supp...

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Bibliographic Details
Main Author Yu Haida
Format Patent
LanguageChinese
English
Published 31.08.2016
Subjects
ACCESSORIES FOR WRITING OR DRAWING
ARTICLES FOR WRITING OR DRAWING UPON
BUREAU ACCESSORIES
PERFORMING OPERATIONS
TRANSPORTING
WRITING OR DRAWING IMPLEMENTS
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Summary:The utility model relates to an automatic blackboard eraser, including motor no. 1, motor no. 2, rack, gear, lead screw, supporter, spacing, position limiting clamp, motor no. 1 and screw connection, motor no. 1 take the kinetodesma thick stick rotatory, and the lead screw is connected with the supporter, fixes in blackboard frame top and bottom for spacing, and the rack is fixed at the blackboard frame top of spacing inboard, and two outputs in the motor are connected with the gear, and wheel and rack meshes, is fixed with the position limiting clamp on the supporter, and the clearing cloth passes through the position limiting clamp to be fixed on the supporter. The advantage is: thereby it cleans letter written with chalk, convenient operation, labour saving and time saving to drive the supporter removal through the motor. Connect the ash box in lead screw bottom setting, can prevent that the chalk dust from flying upward everywhere, through position limiting clamp centre gripping clearing cloth, can change
Bibliography:Application Number: CN20162114659U