| 摘要 |
Motor-driven hinge device comprising a hypocycloid hinge mechanism (7) driven by a drive shaft (8), comprising two metal side plates (71,72) intended for connection to the seating portion (11) and to the backrest (12), a brushless motor (20), and a planetary gear train (30) positioned between the brushless motor (20) and the drive shaft (8), the planetary gear train comprising a sun gear (6) connected to the motor rotor, and a plurality of planet gears (3), each planet gear comprising: a first set of teeth (31) engaging with the sun gear (6) and with a first stationary ring gear (4), and a second set of teeth (32) engaging with a second ring gear (5) rigid with to the drive shaft (8). |
