| 摘要 |
PROBLEM TO BE SOLVED: To provide kerf structure for a snow tire, which enables a tire performance on a dry road surface to be ensured by optimizing the collapse of a tire tread portion and which enables uniform performance of traction to be ensured at the last stage of wear.SOLUTION: The kerf structure for a snow tire is constituted of a wave-shaped straight portion 10 and expansion portions 20, 20' formed expanding from the straight portion, the expansion portions being formed by continuously connecting unit structures in which central semi-sphere holes 22, 22' and polygonal forms 21, 21' around the semi-sphere holes form protrusions in opposite directions. The kerf structure for a snow tire provides a symmetric shape, thereby securing uniform block rigidity regardless of the direction of the kerf, and the interlocking effect can be maximized through the combination of the protrusion shape of the polygonal shape and the embossing of the semi-sphere hole. |
