| 摘要 |
PROBLEM TO BE SOLVED: To provide a lumbar support device capable of providing an appropriate sense of support for a waist part without inflicting a of contact with rods on a driver. SOLUTION: In this lumbar support device, an elastic connecting member is provided between vertical frame materials on the right and left sides of a contour mat and the eccentric shafts of both crank rods. The contour mat is elastically supported in a seatback frame via spring members. The crank rods are supported at the seatback frame in such a way as to be freely operated to reciprocate and rotate.
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