US 10,889,279 B2
Master cylinder of vehicle brake
Byeong Jin Choi, Yongin-si (KR)
Assigned to HYUNDAI MOBIS Co., Ltd., Seoul (KR)
Filed by HYUNDAI MOBIS Co., Ltd., Seoul (KR)
Filed on Oct. 31, 2019, as Appl. No. 16/671,124.
Claims priority of application No. 10-2019-0069350 (KR), filed on Jun. 12, 2019.
Prior Publication US 2020/0391717 A1, Dec. 17, 2020
Int. Cl. B60T 13/74 (2006.01)
CPC B60T 13/745 (2013.01) 10 Claims
OG exemplary drawing
 
1. A master cylinder of a vehicle brake, comprising:
a housing comprising a port configured to move hydraulic fluid;
a motor connected to the housing and configured to supply rotation power;
a screw rotatably installed in the motor and configured to rotate in response to the rotation power of the motor;
a moving piston engaged with an outside of the screw, the moving piston being configured to move in a longitudinal direction of the housing in response to rotation of the screw;
a guide blocked by the housing and constrained from rotating, the guide being configured to constrain rotation of the moving piston and guide linear movement of the moving piston in the longitudinal direction; and
a pressurizing part installed between the housing and the guide, the pressurizing part being configured to pressurize the guide via an elastic force.