CN86209165U - Revolving blackboard - Google Patents

Abstract

The utility model designs a rotatable blackboard which can erase writing and dedust automatically, and the present commonly used one-piece plate type blackboards can be replaced. The rotatable face of the blackboard can make slow upward movement intermittently or continuously. The written surface of the blackboard moves upwards first and then turns to the opposite side of the blackboard when achieving the top of the blackboard, the writing is erased by a rotating eraser automatically. After dedusting, the surface turns back to the front of the blackboard for writing. The pollution of chalk dust can be prevented effectively and the labor of blackboard erasing of the teachers is reduced. The work efficiency of the teachers can be enhanced because that the writing position and height of the teachers are kept in a proper position. The face of the blackboard is vertical type, which is favorable for the eyesight protection of the students because that the envisaging of the students can be kept.

Description

Revolving blackboard

A kind of blackboard.

What generally adopt at present is a board-like blackboard.

The objective of the invention is to propose the rotatable blackboard of a kind of plate face.

Revolving blackboard of the present invention is characterized in that: by a soft blackboard cloth (7), live-rollers (4), (11), (14), driven roller (8), interior gripper shoe (6), (13), revolving brush, final dusting brush, can, dust collection case be connected with support constitute.Its rotation can or be mixed micromotor and realize by crank.Revolving blackboard of the present invention, be by a rubber or, the blackboard cloth made of plastics or all cloth or other material, encircle turning cylinder (4), (11), (14), driven roller (8), interior gripper shoe (6), (13) and constitute rotating blackboard, the blackboard back has a Rotary Blackboard brush (12) to finish the removing work of writing, its chalk dust automatic sedimentation in seal box reaches the removing chalk dust and flies upward pollution problem in dust collecting box.Rotation roller (8) one is furnished with electricity and drives the square spindle nose of using with belt pulley or gear and tennis partner's crank, selects for use for use different driving power.In the position of interior gripper shoe (6) is writing position, and blackboard surface can move up or slowly move up continuously as required off and on, rise with the blackboard surface of word is past earlier, after reaching the top, forward opposite back to, automatically writing is wiped by the blackboard eraser of rotation, and then through final dusting brush (5), to remove attached to the dust on the plate face, go back to the front then, rise, enter the blackboard writing position again, can carry out the Revolving blackboard of said process so repeatedly.

Adopt Revolving blackboard of the present invention, prevented the pollution of chalk dust effectively, reduced the labor that the teacher erases the board, correspondingly saved the time, the teacher can remain on a preferable writing position and height all the time, helps increasing work efficiency; The plate face is vertical, and the student visual field helps protecting student eyesight for facing.

Description of drawings

Fig. 1---front view

Fig. 2---left pseudosection

Claims (3)

1, a kind of Revolving blackboard is characterized in that: encircled at least two turning cylinders and at least one gripper shoe, constituted with at least one blackboard brush by a blackboard cloth.

2, blackboard according to claim 1 is characterized in that: but its blackboard cloth rubber or plastic material are made.

3, blackboard according to claim 1 is characterized in that: the rotation of its blackboard surface can drive or people's driving by electricity.