| 摘要 |
<p>A length adjustable backseat frame for a chair is provided to prevent risks of breakage through its firm structure and to increase comfort by adjusting its length depending on body size of the user. A length adjustable backseat frame(150) for a chair comprises: a main frame(151) supported by combining with a seat part of a chair; and a sub-frame(154) to support a user's back elastically, which is combined with the main frame and comprises a combination frame(154a) where a backseat cushion(160) is established, an elastic frame(154b) combined with the combination frame, and a connective frame combined with the elastic frame as well as the main frame, which has a piercing hole for length adjustment.</p> |
