| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a tire shape measuring device capable of precisely measuring a cross-sectional shape of a tire in a short time without destroying the tire, and to provide a tire fixture used for the same and that kind of tire shape measuring method.SOLUTION: A tire shape measuring device moves a displacement sensor 1 along a C-shaped path extending between a first area A1 and a second area A2 via the outside in a tire diameter direction of a tread part in a tire 9, and uses the displacement sensor 1 moving along the C-shaped path to measure distance to an outer surface of the tire. Separately from the movement of the displacement sensor 1, the device rotates the displacement sensor 1 so as to change a direction of the measurement within a plane parallel to the C-shaped path, and uses the displacement sensor 1 rotating in the first area A1 or the second area A2 to measure distance to an inner surface of the tire. The device calculates a cross-sectional shape of the tire 9 on the basis of the distance measured by the displacement sensor 1, a position of the displacement sensor 1 to the C-shaped path and a rotation angle of the displacement sensor 1.</p> |
