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发明名称
书写视距调节器
摘要
一种书写视距调节器,由固定卡(1)、定位套管(2)、调节杆(3)组合而成,其调节杆(3)可上下抽拉,最低时离桌面高度140mm最高可调至265mm。本实用新型可以校正学生的坐姿,调整眼睛与桌面的距离,能有效的预防近视,且结构简单,使用方便,体积小、重量轻、便于携带,特别适合于小学生使用。
申请公布号
CN2571256Y
申请公布日期
2003.09.10
申请号
CN02269382.3
申请日期
2002.09.05
申请人
步瑞亭
发明人
步瑞亭
分类号
A47B95/00
主分类号
A47B95/00
代理机构
代理人
主权项
1、一种书写视距调节器,由固定卡(1)、定位套管(2)、调节杆(3)组合而成,其特征在于固定卡(1)下端卡固于桌沿部分为两个呈U形的卡子,上部与桌面垂直,套有定位套管(2),调节杆(3)垂直插在定位套管(2)内,可上下抽拉。
地址
265408山东省招远市大秦家镇解家
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