| 摘要 |
<p>The present invention relates to a lumbar supporting device for a chair. The purpose of the present invention is to provide a lumbar supporting device for a chair, which relieves tiredness for a user as a pad frame supports both sides of a pad and the pad stably and flexibly supports the user′s back. The present invention comprises a back supporting part with both ends of the pad to be connected to and supported in both ends of the pad frame; a vertical movement part connected to the back supporting part to vertically move the back supporting part; and a fixing frame to which the vertical movement part is fixed and of which both ends are fixed to a backrest frame of a chair. Therefore, the lumbar supporting system for a chair stably supports the user′s back using the elasticity of the pad of which both sides are supported in the pad frame.</p> |
