Vehicle brake having electric motor control of brake running clearance
AssigneeMeritor Heavy Vehicle Systems, LLC
InventorsDenis John McCann, Andrew John Ward
Life of this patent
Estimating the term…
Abstract
A vehicle braking system adapted to apply a brake lining to a brake rotor, and having a clearance control device for maintaining the free running clearance between the brake lining and the brake rotor during the non-braking phase, comprising an electric motor (40) for adjustment of the brake lining position relative to the brake rotor, with the adjustment being arranged to take place only during the brakes-off condition.
Claims18
A vehicle braking system adapted to apply a brake lining to a brake rotor, and comprising a clearance control device for maintaining the free running clearance between the brake lining and the brake rotor during the non-braking phase, characterised by an electric motor (40) for adjustment of the brake lining position relative to the brake rotor to maintain a predetermined free running clearance in response to brake lining wear, said adjustment being arranged to take place only during the brakes-off condition.
A vehicle braking system adapted to apply a brake lining to a brake rotor, and comprising a clearance control device for maintaining the free running clearance between the brake lining and the brake rotor during the non-braking phase, characterised by an electric motor (40) for adjustment of the brake lining position relative to the brake rotor, said adjustment being arranged to take place only during the brakes-off condition wherein the electric motor (40) is housed substantially within a brake housing to protect the electric motor (40) from any ingress of contaminants, and including a rotary lever (14), angular displacement of which by an external actuator causes axial displacement of laterally spaced tappets (22) whereby to transmit the actuator input load to a brake lining (26) of the brake.
A vehicle braking system adapted to apply a brake lining to a brake rotor, and comprising
- a clearance control device for maintaining the free running clearance between the brake lining and the brake rotor during the non-braking phase;
- an electric motor (40) for adjustment of the brake lining position relative to the brake rotor, said adjustment being arranged to take place only during the brakes-off condition wherein the electric motor (40) is housed substantially within a brake housing to protect the electric motor (40) from any ingress of contaminants;
- a rotary lever (14), angular displacement of which by an external actuator causes axial displacement of laterally spaced tappets (22) whereby to transmit the actuator input load to a brake lining (26) of the brake;
- one or more sensing means for generating information about the movement of the brake in order to provide adjustment data required to perform an adjustment operation including first and second sensing means adapted to determine the displacement of the brake and the load applied by the brake respectively and a sensing means for measuring the free-running clearance take-up movement of the brake wherein the sensing means for determining the brake load comprises a load detection device (130) disposed at the load input end of the rotary lever (14) where the load is applied thereto by the external actuator.
Dependencies are inferred from the claim text.