| 摘要 |
PURPOSE: A chair having a low portable back of a chair is provided to set up regardless of the width of the back of a chair. CONSTITUTION: A portable back of a chair is installed in the chair comprises: at least one support stand (211 - 213) supporting the upper body of the human is upper body supporting part (210) adjusting length according to user it is mobile in expansion and contraction, it is connected; and a fixing unit (220) which is installed at the back of a chair of chair while it is mobile in expansion and contraction, the upper body supporting part is connected to the lower part of the upper body supporting part and fixes the upper body supporting part on the back of a chair of chair is included.
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