| 摘要 |
PURPOSE:To obtain spike effects only when needed, by providing shakable spike pins on the surface layer of a tire, and letting the spike pins shake when a vehicle starts or stops abruptly, and making the both ground touch points of both ends of the base side of each of them touch to the ground. CONSTITUTION:Numberless recess spots are formed on the outer surface of a vehicle tire 1, and at the bottom of the recess, a pivot 2 is provided, by which a spike pin main body 3 is held and is maintained in the recess spot 4. And in the above main body 3, a circular nail, the center of which is the pivot 2, is formed on the circumferential edge of the opposing surface to the road sur face, and one spike end nail 3a on the center line is named no. 1 ground touch point b, and the other spike end nail 3b is named No.2 ground touch point c. Also, on the base side connecting the above each ground touch points b and c, provide a ground touch surface of the above main body 3, and this ground touch surface is formed with the opposing surface 3c to the road surface for the above main body 3 itself, and the opposing surface 2a for the pivot 2. Thus, let the above main body shake, and make the spike end nails 3a and 3b touch to the ground, and obtain spike effects. |
