| 摘要 |
<p>Integrated group of two coaxially arranged electric motors, comprising a first electric motor with a related first shaft provided with two end portions on the opposite sides of the motor, and a second electric motor located between said first motor and an end portion of said first shaft and provided with a respective second hollow shaft, inside which there is accommodated said first shaft, said second hollow shaft being located on the side lying opposite to the one on which there is situated said first motor. Said first shaft is formed of two distinct sections, a mechanical coupling means being included therebetween. Such mechanical coupling means is adapted to selectively couple said two sections with each other and/or selectively uncouple said two sections from each other, and it is provided in a position between said first motor and said second motor. The first one of said two sections is attached to the rotor of the first motor, wherein said mechanical coupling means is adapted to connect said two sections with each other when said motor rotates in a pre-determined direction of rotation, and to disconnect said two sections from each other when said motor rotates in the opposite direction.</p> |
