US 12,467,536 B2
Brake device for vehicle
Byeong Jin Choi, Yongin-si (KR); Chang Hoe Koo, Yongin-si (KR); Byung Jun Kim, Yongin-si (KR); and Si Yoon Park, Yongin-si (KR)
Assigned to HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Dec. 19, 2022, as Appl. No. 18/068,368.
Claims priority of application No. 10-2022-0078142 (KR), filed on Jun. 27, 2022.
Prior Publication US 2023/0415719 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F16J 10/04 (2006.01); B60T 13/16 (2006.01); B60T 13/74 (2006.01)
CPC F16J 10/04 (2013.01) [B60T 13/16 (2013.01); B60T 13/745 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A brake device for a vehicle, comprising:
a housing unit having first and second surfaces respectively facing in mutually opposite directions and respectively having first and second openings with a through-hole extending therebetween;
a motor unit disposed on the first surface of the housing unit and configured to provide a rotational force;
a cylinder unit longitudinally extending from within the motor unit into the through-hole of the housing unit, the cylinder unit having a first end portion surrounded by the motor unit and a second end portion protruding outwardly from the second surface of the housing unit via the second opening of the housing unit;
a bearing unit disposed in the second end portion of the cylinder unit;
a screw shaft disposed within the cylinder unit and configured to axially rotate in response to receiving the rotational force from the motor unit, the screw shaft having a first coupling portion coupled to the motor unit, a second coupling portion coupled to the bearing unit, and a body portion longitudinally extending between the first and second coupling portions;
a nut unit coupled to the screw shaft through a ball member and configured to reciprocate in an axial direction of the screw shaft in response to receiving axial rotating of the screw shaft; and
a piston unit coupled to the nut unit and configured to move in conjunction with the nut unit,
wherein the bearing unit supports an axial load by the piston unit during hydraulic pressure formation of the cylinder unit.