| 摘要 |
<p>PURPOSE:To prevent the collision of the tips of gears when the second gear is meshed with the third gear of driven side by controlling the terminal voltage of a motor that drives a gear provided at an arm so that the second gear to be meshed with the said gear is not rotated in the turning of the arm. CONSTITUTION:The second gear 9 is selectively meshed with the third gear 11 or 12 by the turning of an arm 5. It is assumed that impressing voltage V against a motor 1 is set as (v) only for a time of T1 required for the turning of the arm 5, and it is set as V2<=v<=V3. At such a time, as for V2 and V3, V2 is voltage required for the start of the turning of the arm 5, and V3 the voltage for the start of the rotation of the second gear 9 that receives a friction. While the arm 5 is turning, the second gear 9 stops, meshing with the third gear 11 or 12. Therefore, the voltage of B is applied on the motor 1 even in the turning of the arm 5, preventing the rotation of the second gear 9, and when the second gear 9 is meshed with the third gear 11 or 12, the repelling due to the collision between the tips of the gears 9, 11 and 12 can be prevented, thereby performing a complete meshing.</p> |
