| 摘要 |
A bead structure of a pneumatic tire is provided to prevent air from leaking from a rim-contact area between a bead part and a rim by forming a projection on the rim-contact area. A bead structure of a pneumatic tire comprises a plurality of projections(11). The projection is formed on a rim-contact area between a rim and a bead part in a curved line. The projections are disposed at an upper area(12a) and a lower area(12c), respectively, such that the projections of different areas are not mixed with each other. The projections are formed in a concentric circle around a center point of the tire while being spaced apart from each other. The projections are sequentially adhered to a surface of the rim.
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