US 11,932,349 B2
Power unit and method
Iiro Peltola, Tampere (FI)
Assigned to GATES CORPORATION, Denver, CO (US)
Appl. No. 17/622,296
Filed by Gates Corporation, Denver, CO (US)
PCT Filed Jun. 26, 2020, PCT No. PCT/FI2020/050468
§ 371(c)(1), (2) Date Dec. 23, 2021,
PCT Pub. No. WO2020/260772, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 20195587 (FI), filed on Jun. 28, 2019.
Prior Publication US 2022/0258832 A1, Aug. 18, 2022
Int. Cl. B62M 6/45 (2010.01); B62M 6/55 (2010.01); B62M 11/14 (2006.01); F16D 28/00 (2006.01); F16D 41/24 (2006.01); F16H 1/28 (2006.01); F16H 3/72 (2006.01)
CPC B62M 6/45 (2013.01) [B62M 6/55 (2013.01); B62M 11/145 (2013.01); F16D 28/00 (2013.01); F16D 41/24 (2013.01); F16H 3/72 (2013.01); F16H 1/28 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A power unit having a housing for a pedal vehicle, the power unit comprising:
a main epicyclic gear set arranged to control transmission ratio between a pedal shaft and an output shaft of the pedal vehicle, the main epicyclic gear set comprises a sun gear, a ring gear, plurality of planet gears between the sun gear and the ring gear and a planet carrier connected to the planet gears;
an assist motor connected to an assist gear of the main epicyclic gear set and arranged to transmit torque to the output shaft;
a control motor connected to a control gear of the main epicyclic gear set and arranged to adjust the transmission ratio of the main epicyclic gear set, the control motor and the control gear forming a control assembly of the power unit; and
a one-way clutch provided to the control assembly of the power unit and arranged to transmit rotation in only a first rotation direction,
the pedal shaft is connected to the planet carrier, the ring gear is connected to the output shaft, the control motor is connected to the sun gear, and the assist motor is connected to the ring gear;
the ring gear forming the assist gear;
the sun gear forming the control gear; and
the control motor and the sun gear forming the control assembly and the one-way clutch is provided to the control assembly,
wherein:
the one-way clutch is arranged between the sun gear and the housing of the power unit.