VARIO
is based on an epicyclic transmission at variable ratios. |
| The motor
rotates the inner solar rings 10 (spliced on the motor shaft)
and 11, that, pressed by the belleville washers 12, transmit
the rotation to the satellite cone disks 7. |
These
satellites are in contact with the outer fixed external ring
9 and the external mobile ring 6, and impart rotation to the
planet carrier 8 (integral with the output shaft) to which
they are connected through the friction bearing planet disk
3. |
| Rotating
the control knob, the mobile ring 6 rotates and operates an
axial shifting; this movement is caused by the action of the
ball rings 5 on the opposite orbits rings (4 and 6); this
shifting movement operates on the conic sides of the planets
which move radially inside the 10 and 11 solar rings, |
| overcoming
the springs 12 reaction. In this way, the variation
of the contact position |
|
|
| on
the planets sides determines the planet supports speed variation,
and as a consequence that of the output shaft speed too. |
