| 摘要 |
PROBLEM TO BE SOLVED: To inhibit deformation of a cylindrical support.SOLUTION: A headrest support structure includes: a stay 51 extending downward from a headrest 4; a bracket 55 provided at a backrest 3, formed into a cylindrical shape, and vertically extending; a cylindrical part 61 having an insertion hole 66 into which the stay 51 is inserted, inserted into the bracket 55 in a fitting manner, and vertically extending; and protruding parts 101 to 110 provided at the cylindrical part 61 and facing an inner surface of the bracket 55. A lower part of the cylindrical part 61 has a flat side surface portion. The flat side surface portion is positioned at the front side.SELECTED DRAWING: Figure 5 |
