| 摘要 |
<p>Disclosed is a bracket angle adjustment mechanism adapted to reduce shock to be given to a wedge member, based on an improved wedge shape. The bracket angle adjustment mechanism comprises a pair of wedge members 16A, 16B. In each of the wedge members 16A, 16B, an arc-shaped outer surface 16a has a diameter slightly less than that of an arc-shaped inner peripheral surface of a large-diameter hole 14c of an external-tooth gear 14, and an arc-shaped inner surface has a diameter slightly greater than that of an arc-shaped outer peripheral surface of a small-diameter shank 15c of an internal-tooth gear 15. The arc-shaped inner surface 16b has a circumferential length approximately equal or greater than that of the arc-shaped outer surface 16a.</p> |
