| 摘要 |
PURPOSE: A lumbar supporting device of a seat for a vehicle is provided to reduce fatigue of the lumbar of a driver for a long time driving and improve riding comfort when the driver sits on the seat by automatically regulating the height of the lumbar supporting device to the driver's height. CONSTITUTION: A lumbar supporting device embedded in the center of a seat back of a front seat(10) to support the lumbar of a driver is composed of a lumber supporting bar formed in the center of the seat back of the front seat to vertically reciprocate; vertically moving devices(30) connected by the lumbar supporting bar and a connecting member; seat tracks(50) disposed at both lower ends of the front seat; and a seat track rail(60) fixed to a floor panel(70) and combined with the seat track to reciprocate back and forth the front seat. The seat track rail includes a rack fixing unit(62) through which the wire passes, formed at the outside and one end of a wire tube for protecting the wire is connected to the rack fixing unit.
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