in order to solve the problem of the chair portable traveling, the author design a portable folding chair, absorbing and improving the existing fixed chair, it use of mechanics and mechanical principle, innovation back shrinkage mechanism, column type shrinkage locking mechanism and a lever connecting mechanism, in order to folding chair is simple, flexible contraction, easy to carry, become a new concept of portable folding chair. This paper introduces the design principle of the mechanism and the overall structure scheme.%为解决外出旅行时椅子的便携问题，设计了一种便携式折叠椅，利用力学和机械原理，创新靠背收缩机构、立柱式收缩锁紧机构及杠杆连接机构，从而使椅子折叠简单，收缩灵活，携带方便，成为一款新概念便携式折叠椅。文章介绍了其机构设计原理和整体结构方案。
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