US 12,117,861 B2
Magnetorheological fluid-based haptic knob apparatus
Yoon Im, Suwon-si (KR); Yong Won Choi, Seoul (KR); Myung Hoe Kim, Seoul (KR); Joo Hwa Kim, Hwaseong-si (KR); In Ho Yun, Cheonan-si (KR); Hyun U Ko, Cheonan-si (KR); and Sang Youn Kim, Seoul (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Korea University Of Technology And Education Industry-University Cooperation Foundation, Cheonan-si (KR)
Filed by Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Korea University Of Technology And Education Industry-University Cooperation Foundation, Cheonan-si (KR)
Filed on Nov. 9, 2022, as Appl. No. 18/054,141.
Prior Publication US 2023/0259153 A1, Aug. 17, 2023
Int. Cl. G05G 5/03 (2008.04); G05G 1/08 (2006.01)
CPC G05G 5/03 (2013.01) [G05G 1/08 (2013.01); G05G 2505/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A magnetorheological fluid-based haptic knob apparatus comprising:
a housing;
a solenoid coil mounted inside the housing, the solenoid coil configured to generate a magnetic field thereby providing magnetic flux;
a shaft connected to the housing and configured to generate a plurality of modes;
a magnetorheological fluid accommodated inside the housing, the magnetorheological fluid configured to form a magnetic chain in response of the magnetic flux; and
a housing cover covering an open top of the housing,
wherein the shaft comprises:
a rotational rod,
a main body rotatably arranged in the housing, and
bumps configured to guide a flow of the magnetorheological fluid when the main body rotates.