Moving turning type blackboard

Abstract

The invention relates to a moving turning type blackboard. A forward and reverse turning mechanism comprises a blackboard body, a blackboard body frame, four idler wheel sets and steel wires, each idler wheel set is composed of three idler wheels, each first idler wheel is fixed on the side edge of the blackboard body frame, a first idler wheel rolling rail is connected with the steel wires, the two ends of each steel wire are connected with an inner hole of each second idler wheel and an inner hole of each third idler wheel, and a second idler wheel rolling rail and a third idler wheel rolling rail are connected with the blackboard body through the steel wires. The two ends of each steel wire are fixedly connected with the upper corner and the lower corner of one side of the blackboard body respectively to constitute the blackboard which can turn forward and reversely, and double surfaces of the blackboard can be used. A left and right moving mechanism comprises fourth idler wheels, fifth idler wheels, a steel wire, a dust groove and a pedal, two sides and the middle of the lower end of the blackboard body frame are connected with the fourth idler wheels respectively, the dust groove is formed below the fourth idler wheels which are connected with the dust groove in a rolling mode, the walls of two sides of the blackboard body frame are fixedly connected with the fifth idler wheels respectively, one end of the steel wire is fixed on the wall, and the other end of the steel wire penetrates through the fourth idler wheels and the fifth idler wheels, extends to the ground, and is connected with the pedal.

Description

technical field [0001] The invention relates to a teaching blackboard, in particular to a movable flip-type blackboard. Background technique [0002] Currently on the market and widely used in schools are ordinary curved blackboards, lifting blackboard sets, horizontal sliding blackboard sets, electric universal blackboards, etc. Most of these designs are single-form or rely on power supply, which is not suitable for teaching in some cases. When teachers write a lot of writing on the blackboard, they have to waste time wiping the blackboard in class or have to wipe off important writing on the blackboard, and the dust caused by wiping the blackboard will be harmful to the health of students. [0003] The currently published patents mainly include: [0004] 1. Automatic cleaning blackboard with swivel back wipe, patent number 200510107755.2 [0005] 2. Rotatable crawler blackboard, patent number: 200520024293.3 [0006] Patent 1 mainly uses specially treated cloth leat...

AI Technical Summary

Problems solved by technology

[0008] The above patents all have the disadvantages that the materials are difficult to manufacture and the utilization efficiency is not high, so it is difficult to use them in large quantities in school teaching.

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