Inhibitor integrated actuator shift control device

Patent metadata

Field	Value
Publication number	US-11441675-B2
Application number	US-202016887069-A
Country	US
Kind code	B2
Filing date	May 29, 2020
Priority date	Sep 20, 2019
Publication date	Sep 13, 2022
Grant date	Sep 13, 2022

Abstract

The present disclosure provides an inhibitor integrated actuator shift control device capable of controlling a position of a gear shift by improving control performance and durability through position control of a brushless direct current (BLDC) motor by an inductive sensor, forming a metallic uneven portion on an output shaft flange part of a reducer, and detecting a variation amount in induced current due to the metallic uneven portion.

First claim

What is claimed is:

1. An inhibitor integrated actuator shift control device comprising:
a first housing ( 10 );
a stator ( 20 ) comprising a bobbin ( 21 ) and a coil ( 23 ) wound around the bobbin ( 21 ) disposed in the first housing ( 10 );
a rotor ( 30 ) comprising a rotor core ( 31 ) and a rotary shaft ( 35 ) connected to the rotor core ( 31 ), the rotary shaft ( 35 ) comprising an eccentric portion ( 35 a ) at one end thereof, wherein the rotor is disposed in the stator ( 20 );
a first inductive sensor ( 40 ) comprising conductive couplers ( 41 ) and a sensor plate ( 43 ), wherein the conductive couplers ( 41 ) are connected to an opposite end to the one end of the rotary shaft ( 35 ), and wherein the first inductive sensor ( 40 ) is disposed in the first housing ( 10 );
a reducer ( 50 ) comprising a sun gear ( 51 ), a ring gear ( 53 ) and an output shaft ( 55 ), wherein the sun gear ( 51 ) is connected to the eccentric portion ( 35 a ) of the rotary shaft ( 35 ) to rotate eccentrically, the ring gear ( 53 ) is inscribed with the sun gear ( 51 ), and the output shaft ( 55 ) is connected to the sun gear ( 51 ) to transmit a rotational force;
a second housing ( 60 ) in which the reducer ( 50 ) is disposed; and
a magnetically inductive second inductive sensor ( 90 ) on a flange part ( 55 a ) of the output shaft ( 55 ) configured to detect a rotation angle of the output shaft ( 55 ),

wherein the sun gear ( 51 ) comprises teeth shaped grooves ( 57 a ) formed on a disk portion of the sun gear ( 51 ), and
wherein the flange part ( 55 a ) of the output shaft ( 55 ) further comprises multifaceted teeth shaped protrusions ( 57 b ) configured to fit into the teeth-shaped grooves ( 57 a ) of the sun gear ( 51 ).

2. The inhibitor integrated actuator shift control device of claim 1 , wherein the second inductive sensor ( 90 ) comprises a metallic uneven portion ( 91 ) formed on the output shaft ( 55 ), and a printed circuit board ( 93 ) provided in the second housing ( 60 ), the printed circuit board comprising a transmission coil and a reception coil which are disposed to face the uneven portion ( 91 ).

3. The inhibitor integrated actuator shift control device of claim 2 , wherein the reducer ( 50 ) further comprises a multistage teeth-shaped transmission unit ( 59 ) configured to connect the sun gear ( 51 ) and the output shaft ( 55 ).

4. The inhibitor integrated actuator shift control device of claim 3 , wherein the multistage teeth-shaped transmission unit ( 59 ) of the sun gear ( 51 ) comprises a base stage and an additional stage over the base stage inwardly forming a step with respect to the base stage, the additional stage comprising an external teeth ( 59 a ) and the base stage forming an outer teeth ( 51 a ), wherein the the output shaft ( 55 ) further comprises an internal teeth ( 59 b ) formed in the flange part ( 55 a ) to be inscribed with the external teeth ( 59 a ).

5. The inhibitor integrated actuator shift control device of claim 4 , wherein an inner side portion of the flange part ( 55 a ) is further provided with a contact surface portion ( 59 c ) which comes into contact with the sun gear ( 51 ).

6. The inhibitor integrated actuator shift control device of claim 2 , wherein the metallic uneven portion ( 91 ) of the second inductive sensor is formed on the flange part ( 55 a ) of the output shaft.

7. The inhibitor integrated actuator shift control device of claim 1 , wherein the disk portion of the sun gear ( 51 ) further comprises a contact groove ( 57 c ) connected to the multifaceted teeth-shaped groove ( 57 a ) to come into contact with the flange part ( 55 a ) of the output shaft ( 55 ) to expand a contact area.

8. The inhibitor integrated actuator shift control device of claim 1 , wherein the conductive coupler ( 41 ) of the first inductive sensor includes a single metal plate or a plurality of metal plates.

Assignees

• Kyung Chang Ind Co Ltd
• Sam Hyun Co Ltd

Inventors

• Kim Dong Won
• Maeng Sung Joon
• Kim Dae Yeon
• Heo Jin
• Choi Tae Keuk
• Kim Jeong Seok

Classifications

• F16H1/32

  in which the central axis of the gearing lies inside the periphery of an orbital gear · CPC title

• F16H2061/326

  Actuators for range selection, i.e. actuators for controlling the range selector or the manual range valve in the transmission · CPC title

• H02K29/06

  with position sensing devices (H02K29/03 takes precedence) · CPC title

• F16H63/304 Primary

  the final output mechanisms comprising elements moved by electrical or magnetic force (band brake actuating mechanisms F16H63/3003) · CPC title

• F16H2001/327

  with the orbital gear having internal gear teeth · CPC title