| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rotational operation device which enables arbitrarily setting a position for regulating rotational operation to an operation object even in a neutral position to a region exceeding 360° leftwise and rightwise.SOLUTION: A steering device includes a fixing member 4 and a fixing member 5 into which a steering shaft to be operated for rotation is inserted, and a rotational member 6 which rotates together with the steering shaft, between the fixing members 4, 5. In the fixing member 4, a spiral groove 43 is provided around the steering shaft. The rotational member 6 includes a regulation block which displaces to the fixing member 5 side following the displacement of a slide block 63 that displaces in the radial direction of the steering shaft by being guided by the spiral groove 43. The fixing member 5 includes a counter groove 53 in which the regulation block enters. The rotation of the steering shaft is regulated by abutting of the regulation block with counter regulation edge parts 56, 57 of the counter groove 53.</p> |
