| 摘要 |
PROBLEM TO BE SOLVED: To finely set adjustment by a detent mechanism without increasing the diameter of a member. SOLUTION: Two pairs of steel balls 17a and 17b, that is, total 4 balls are arranged at symmetrical positions with an axis 12 as a center, and the angle made by the adjacent steel balls 17a and 17b with the axis 12 as a center is set to be 45 deg.. Then, at the time of starting to rotate an adjust plate 13 from a state that the steel ball 17a is fitted to a recessed part 15, and the steel ball 17b is not fitted to the recessed part 15, the steel ball 17a is separated from the recessed part 15 at first, and then the steel ball 17b is fitted to the recessed part 15 when the adjust plate 13 is rotated by 45 deg..
|
