Teaching blackboard convenient to clean

Abstract

The invention discloses a teaching blackboard convenient to clean. The blackboard comprises a board surface, wherein an AB motor is arranged on one side of the top of the board surface, the output endof the AB motor is connected with a rotating rod; a first transmission wheel is arranged at the other end of the rotating rod; first connecting rods are arranged at the top of the other side of the board surface and are parallel relatively; a horizontal rotating shaft is arranged between tops of the two connecting rods, and is sleeved with a second transmission wheel; a transmission chain is sleeved between the second transmission wheel and the first transmission wheel; and a driving gear is arranged in the transmission chain between the second transmission wheel and the first transmission wheel. The blackboard has a simple integral structure, can automatically drive a cleaning brush to clean the board surface back and forth by controlling the AB motor without manual operation when the board surface needs to be cleaned, can be used for effectively preventing dust from falling on user bodies, and is quick and convenient to use.

Description

technical field [0001] The invention relates to the field of blackboards, in particular to a blackboard for teaching which is convenient for cleaning. Background technique [0002] The blackboard does not specifically refer to the black board surface. In the traditional sense, it is a plane that can be written repeatedly. The board surface is hard and is mostly used for teaching. Made of wood or frosted glass, etc., you can write on it with specific writing materials such as chalk. Mostly black, dark green, white or beige. [0003] In the existing blackboards for teaching, most of the blackboards are written on the board surface with chalk. Since the use area on the board surface is limited, it is often necessary to wipe off the powder on the blackboard during use. Erase and clean. During the cleaning process, due to the close distance between the user and the blackboard, chalk powder often falls on the user's body, resulting in inconvenient cleaning. For this reason, we h...

AI Technical Summary

Problems solved by technology

[0003] In the existing blackboards for teaching, most of the blackboards are written on the board surface with chalk. Since the use area on the board surface is limited, it is often necessary to wipe off the powder on the blackboard during use. Erase and clean. During the cleaning process, due to the close distance between the user and the blackboard, chalk powder often falls on the user's body, resulting in inconvenient cleaning. For this reason, we have designed a teaching method for easy cleaning. Use the blackboard to solve the above problems

Images