Rolling whiteboard for teaching

Abstract

The invention relates to a rolling whiteboard for teaching. The rolling whiteboard for teaching comprises a support leg for moving and a plate body. The plate body is installed on the support leg andcan be adjusted up and down. The upper and lower sides of the plate body are respectively provided with an upper transmission roller and a lower transmission roller. The height of the upper transmission roller can be adjusted by a lifting rod and a sleeve. A fixed roller and a moving roller are arranged in order from top to bottom inside the board. The moving roller can cooperate with the upper transmission roller for elastic lifting. The upper transmission roller, the moving roller, the fixed roller and lower transmission roller are connected in a transmission mode through a closed whiteboardcloth in sequence. The height of the upper transmission roller is adjusted through the lifting rod and the sleeve, and at the same time, the changes of the position of the moving roller in the innercavity can cooperate with the height adjustment of the upper transmission roller to increase the display area of the front whiteboard cloth. The area of the front display is increased, users can readconveniently and the problem of small writing range on the whiteboard is avoided.

Description

Technical field [0001] The invention relates to the field of teaching aids, in particular to a rolling whiteboard for teaching. Background technique [0002] The main disadvantages of the blackboard are: 1. When wiping, the dust is flying, which seriously pollutes the teaching environment. Long-term exposure to chalk dust will have an adverse effect on the body of teachers and students. At the same time, it is easy for users to write with their feet up and their arms up. Eat chalk gray; 2. Conventional blackboards are fixedly installed, which is easy to cause inconvenience to users who are not tall and make writing troublesome. At the same time, in order not to waste the use area of ​​the blackboard, write both on the top of the blackboard and the bottom of the blackboard. It is more laborious and laborious; 3. Due to the height limitation of the existing blackboard, the teacher obscures part of the text on the blackboard when the podium is active, which hinders the observation o...

AI Technical Summary

Problems solved by technology

[0002] The main disadvantages of the blackboard are: 1. Due to the flying dust when wiping, it seriously pollutes the teaching environment. Long-term contact with chalk dust will have adverse effects on the health of teachers and students. Eat chalk dust; 2. The conventional blackboard is fixedly installed, which is easy to cause inconvenience to users who are not tall, making writing troublesome. 3. Due to the height restriction of the existing blackboard, the teacher blocked part of the text content on the blackboard during the activities on the podium, hindering the observation of the students' eyes, eyes, hands and brains, and affecting the learning effect; 4. The blackboard is using chalk. During writing and erasing by hand, the board surface is easily damaged and aged, causing fading, reflection, unclear handwriting, and damage to students' vision; 5. The writing area of ​​the blackboard is relatively limited

[0003] Although the existing whiteboard replaces part of the blackboard and uses erasable pens for writing to avoid the problem of chalk dust, its overall area is small, and the writing content is not as large as that of the blackboard, and the traditional blackboard also uses multiple parallel slides. Write another piece for display, further expand the writing area and display area, making the whiteboard writing area much smaller than the blackboard, which is not conducive to the promotion of replacement

Images