| 摘要 |
PURPOSE: A lumbar supporting device of a chair is provided to maintain the lumbar vertebra and waist support state. CONSTITUTION: A lumbar supporting device of a chair comprises a fixed frame, a supporting pad, and a height adjuster. The supporting pad is equipped in the fixed frame and supports the waist and lumbar vertebra. The height adjuster ascends and descends the supporting pad. The supporting pad comprises a guide member(21), an extending member(22), a support plate member(23), and a binding band member(26). The support plate part supports the waist around the lumbar vertebra. A reinforcing member(40) is formed between the fixed frame and supporting pad. |
