| 摘要 |
<p>The speed variator is suited to transmit the rotary motion from a first input shaft (1) to a second output shaft (2), by means of a bidirectional motor drive (6) associated to the first shaft (1) and suited to drive the motion in one rotary direction (C) as well as in the opposite one (A) at suitable phase relationship. A first gear (30) in mesh is associated to the first shaft (1) and second shaft (2) for transmitting the rotary motion according to a first gear ratio (i1), while a second gear (40) in mesh is suited to transmit the rotary motion according to a second to gear ratio (i2) different from said first gear ratio (i1). Unidirectional drive means (5, 9), associated respectively to the first gear (30) and to the second gear (40), perform the motion transmission exclusively in one rotary direction.</p> |
