The invention relates to an improved plunger assembly for a vehicle brake system. The plunger assembly is operable as a pressure source to control brake fluid pressure supplied to one or more wheel brakes. The plunger assembly comprises a housing defining a cylinder; a reversible motor supported by the housing and having a rotor; and a linear actuator such as a ball screw/nut mechanism driven by the motor. A plunger head is mounted in the cylinder and driven by the linear actuator in first and second opposite directions. Improvements include an elastomeric tubular torque coupler connected to a ball screw/nut anti-rotation member; and a clamped connection at an inner race of a motor bearing for securing the rotor to the ball screw/nut component.
VEHICLE BRAKE SYSTEM HAVING PLUNGER POWER SOURCE
FAHRZEUGBREMSSYSTEM MIT KOLBENLEISTUNGSQUELLE
SYSTÈME DE FREINAGE DE VÉHICULE AYANT UNE SOURCE D'ALIMENTATION À PISTON
2023-11-01
Patent
Electronic Resource
English