| 摘要 |
PURPOSE: A chair equipped with a lumbar support is provided, which makes installation structure of the lumbar support simple, facilitates manufacture, and makes maintenance and repair easy. CONSTITUTION: A chair includes a lumbar support(3) equipped with a seat plate and a seat back(2). A seat back frame(20) comprises a concave frame part(21) which is concave to the bottom part; and an upper frame part(22) locating on the top of concave frame part. To the concave frame part of the seat back frame, the lumbar support is fixed. The lumbar support comprises an elastic bent rod(31), a fixing unit(32), and a waist support main body(33).
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