US 12,325,489 B2
Power module of electric assisted bicycle
Chi-Wen Chung, Taoyuan (TW); Hung-Wei Lin, Taoyuan (TW); and Chien-Ping Huang, Taoyuan (TW)
Assigned to Delta Electronics, Inc., Taoyuan (TW)
Filed by Delta Electronics, Inc., Taoyuan (TW)
Filed on May 9, 2022, as Appl. No. 17/740,096.
Claims priority of provisional application 63/247,967, filed on Sep. 24, 2021.
Claims priority of application No. 202210367979.0 (CN), filed on Apr. 8, 2022.
Prior Publication US 2023/0099907 A1, Mar. 30, 2023
Int. Cl. B62M 6/45 (2010.01); B60L 50/52 (2019.01); B62M 6/55 (2010.01); B62M 6/60 (2010.01); B62M 6/65 (2010.01)
CPC B62M 6/55 (2013.01) [B60L 50/52 (2019.02); B62M 6/60 (2013.01); B60L 2200/12 (2013.01); B60L 2240/421 (2013.01); B62M 6/45 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A power module of an electric assisted bicycle, mid-mounted and comprising:
a pedal shaft arranged along an axial direction;
a gear-plate-output shaft in a shape of a long tube and arranged in parallel with the pedal shaft along the axial direction, wherein the gear-plate-output shaft has two-stage diameters to form a first section and a second section having different diameters and arranged along the axial direction, wherein an inner diameter of the first section is greater than an outer diameter of the second section, and an inner surface of the first section is concentrically sleeved on the pedal shaft through a first one-way bearing along a radial direction, wherein when the pedal shaft is forced to rotate, the first section of the gear-plate-output shaft is driven by the pedal shaft through the first one-way bearing, so that the gear-plate-output shaft is rotated;
a reducer comprising a reducer-output shaft, wherein the reducer-output shaft is arranged in parallel with the gear-plate-output shaft along the axial direction, and concentrically sleeved on an outer surface of the second section of the gear-plate-output shaft through a second one-way bearing along the radial direction; and
a motor comprising a motor-output shaft, wherein the motor-output shaft is arranged concentrically with the reducer-output shaft along the axial direction, spatially corresponding to the second section of the gear-plate-output shaft and concentrically sleeved on the reducer-output shaft along the radial direction, wherein when the motor-output shaft drives the reducer-output shaft to rotate, the second section of the gear-plate-output shaft is driven by the reducer-output shaft through the second one-way bearing, so that the gear-plate-output shaft is rotated.