Kyung Chang Industrial Co., Ltd.

Hyundai Motor Company

Kia Motors Corporation

Sam Hyun Co., Ltd.

Ki Cheol Hyun

Dae Yeon Kim

Yang Rae Cho

Kyu-Jung Kim

Wonjin Jeong

Byoung Hyuk Lee

Jin Hyuck Heo

Kyu Jung Kim

Jeong Seok Kim

Tae Keuk Choi

An acuator for a shift-by-wire system includes a drive motor installed inside a motor housing, the drive motor having a drive shaft, and a decelerator inside a decelerator housing coupled with the motor housing, the decelerator coupled to the drive shaft. The decelerator includes a sun gear connected to a first side of an eccentric part of the drive shaft, a ring gear engaged with the sun gear and fixed to the decelerator housing, an output shaft connected to a second side of the eccentric part, a first bearing coupled to one side of the eccentric part and supporting the sun gear, a second bearing coupled to the other side of the eccentric part and supporting the output shaft, and a power delivery unit coupled to the sun gear and the output shaft in a center region between the first and second bearings.In an embodiment an actuator includes a drive motor installed inside a motor housing, wherein the drive motor includes a drive shaft having a driving part fixed to a rotor of the drive motor, an eccentric part integrally connected to the driving part at a position off a shaft center of the driving part, and an elongated part elongated from the eccentric part with respect to the shaft center, and a decelerator inside a decelerator housing coupled with the motor housing. The decelerator is eccentrically coupled to the drive shaft and includes a sun gear rotatably connected to the eccentric part, a ring gear engaged with the sun gear and fixed to the decelerator housing, an output shaft rotatably connected to the elongated part, a first bearing coupled to the eccentric part and supporting the sun gear, a second bearing coupled to the elongated part and a power delivery unit coupled to the sun gear and the output shaft in a center region between the first bearing and the second bearing.

Actuator for shift-by-wire system

The present disclosure provides a shift by wire (SBW) driving actuator capable of improving control performance and durability through control of a brushless direct current (BLDC) motor by an inductive sensor, and improving gear transmission efficiency by introducing a multistage teeth-shaped transmission unit configured to connect a sun gear and an output shaft of a reducer to transmit a rotational force to reduce a load resulting from eccentric rotation of the sun gear.

SBW driving actuator

An acuator for a shift-by-wire system includes a drive motor installed inside a motor housing, the drive motor having a drive shaft, and a decelerator inside a decelerator housing coupled with the motor housing, the decelerator coupled to the drive shaft. The decelerator includes a sun gear connected to a first side of an eccentric part of the drive shaft, a ring gear engaged with the sun gear and fixed to the decelerator housing, an output shaft connected to a second side of the eccentric part, a first bearing coupled to one side of the eccentric part and supporting the sun gear, a second bearing coupled to the other side of the eccentric part and supporting the output shaft, and a power delivery unit coupled to the sun gear and the output shaft in a center region between the first and second bearings.

Growing community of inventors

Daegu, South Korea

Ki Cheol Hyun