Adjustable dust suction blackboard eraser

Abstract

The invention discloses an adjustable dust suction blackboard eraser. The adjustable dust suction blackboard eraser comprises a blackboard eraser body, turnover bearings are arranged on the two sidesof the blackboard eraser body, splicing bearing faces are arranged on the two sides of the turnover bearings, magnetic attraction plates are arranged on the upper surfaces of the splicing bearing faces, blackboard eraser cloth is arranged on the two sides of the magnetic attraction plates, dust absorbing cavities are formed in the bottoms of the blackboard eraser cloth, driving shaft wheels are arranged on the bottoms of the dust absorbing cavities, driving devices are arranged on the centers of the driving shaft wheels, dust collection chambers are ararnged on the btotoms of the driving devices, rotating shaft rollers are arranged on the centers of the dust collection chambers, absorbing type clamping buckles are arranged on the two sides of connecting rods, supporting cross rods are arranged on the right sides of the absorbing type clamping buckles, folding type wiping blocks are arranged on the bottoms of the supporting cross rods, water absorbing sponges are arranged on the bottomsof the folding type wiping blocks, and telescopic type handheld rods are arranged on the bottoms of the water absorbing sponges. The adjustable dust suction blackboard eraser is simple in structure,and practical in function, and the practical needs of the education sector for the dust suction blackboard eraser can be met.

Description

technical field [0001] The invention belongs to the technical field of blackboard erasers, and in particular relates to an adjustable dust-absorbing blackboard eraser. Background technique [0002] From the earliest use of black paint on the surface of hard objects such as wood and cement, to the terrazzo glass, color-coated steel plates and composite material boards in the 1990s, blackboards have witnessed the step-by-step development of world education, spreading knowledge and popularizing education for mankind. Made a lot of contributions. Now the types of blackboards have also become complex and diverse. From the color, there are blackboards, green boards, and white boards. From the surface shape, there are flat panels and arc panels. From the structural composition, there are bracket movable panels, push-pull panels, and lifting panels. , Magnetic blackboard, blackboard eraser is essential for the cooperating use of blackboard and chalk. However, the existing blackboa...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an adjustable dust-absorbing blackboard eraser to solve the problems of the adjustability of the wiping surface and the dust-absorbing effect.

Images