Application and Research of Automatic Chalk Holder
Aiming at solving the shortcomings such as the bad stimulation of the chalk dust on the skin and the wastage of broken chalks during writing,this paper designed an automatic chalk holder with simple structure and good clamping performance in order to solve the problems such as the protection of teachers hand skin from the chalk dust while writing on the blackboard and waste problems caused by chalk breaking when chalk is used with different writing strength.The above problems are solved by practical application of the automatic chalk holder.
chalk holder design automatic pen-out easy to install protect the skin
Jin Kui Zhang Peng
Dalian Vocational & Technical College,China,116037
国际会议
大连
英文
49-51
2018-12-21（万方平台首次上网日期，不代表论文的发表时间）