US 12,146,557 B2
Differential and vehicle comprising such differential
Mattia Filippini, Padua (IT); Piergiorgio Alotto, Padua (IT); Maurizio Repetto, Turin (IT); Elvio Bonisoli, Turin (IT); and Vincenzo Cirimele, Turin (IT)
Assigned to EuroGroup Laminations S.p.A., Baranzate (IT)
Appl. No. 17/297,861
Filed by UNIVERSITA' DEGLI STUDI DI PADOVA, Padua (IT)
PCT Filed Nov. 28, 2019, PCT No. PCT/IB2019/060284
§ 371(c)(1), (2) Date May 27, 2021,
PCT Pub. No. WO2020/110064, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 102018000010648 (IT), filed on Nov. 28, 2018.
Prior Publication US 2022/0018427 A1, Jan. 20, 2022
Int. Cl. F16H 48/34 (2012.01); F16H 48/08 (2006.01); H02K 49/10 (2006.01)
CPC F16H 48/34 (2013.01) [F16H 48/08 (2013.01); F16H 2048/343 (2013.01); H02K 49/102 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A differential comprising two magnetic gears, each of said magnetic gears comprising:
an internal rotor comprising permanent magnets and having polar pairs,
an external rotor comprising permanent magnets and having polar pairs, and
a rotor of ferromagnetic poles interposed between said internal rotor and said external rotor;
said internal rotor, said external rotor and said rotor of the ferromagnetic poles being coaxial and configured for rotating about a gear axis; wherein:
the internal rotors are configured for being connected to a drive, to be placed in rotation about a respective gear axis by said drive;
the external rotors are configured for being connected to respective output axle shafts for placing them in rotation or are connected to adjustment means configured for adjusting their rotation speed;
in an event that the external rotors are configured for being connected to the respective output axle shafts for placing them in rotation, the rotors of the ferromagnetic poles are connected to the adjustment means configured for adjusting the rotation speed of said rotors of the ferromagnetic poles;
in an event that the external rotors are connected to the adjustment means configured for adjusting their rotation speed, the rotors of the ferromagnetic poles are configured for being connected to the respective output axle shafts for placing them in rotation;
the polar pairs of said internal rotor, the polar pairs of said external rotor, and the ferromagnetic poles are selected to achieve a predetermined gear reduction.