Automatic blackboard eraser

• Main Author: Yu Haida
• Format: Patent
• Language: Chinese; 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

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