Disc brake assembly
AssigneeMeritor Heavy Vehicle Braking Systems (UK) Limited
InventorsPaul Anthony Thomas, Paul Roberts
Life of this patent
Estimating the term…
Abstract
A disc brake assembly includes a brake pad, a pad retainer, a brake caliper, and a pad spring. The pad retainer has a planar region situated at a first radius that engages a planar region of the pad spring to restrain radial movement of the brake pad. The pad retainer is secured to an outboard side of the caliper at a second radius and has a crook adjacent to the planar region to allow the second radius to be less than the first radius. The pad spring has a rounded edge adjacent to the crook.
Claims18
A disc brake assembly comprising:
- a brake caliper having an outboard side;
- a brake pad;
- a pad spring including a spring planar region, wherein the pad spring is substantially elongate and defines a longitudinal direction;
- and
- a pad retainer including a retainer planar region positioned at a first radius to restrain radial movement of the brake pad, wherein the pad retainer is secured to the outboard side of the brake caliper at a second radius that is less than the first radius, the pad retainer further including a crook at an end of the retainer planar region,
- wherein the spring planar region engages the pad retainer, thereby defining an engaging region of the spring planar region, and
- wherein a lateral edge region of the engaging region adjacent to the outboard side of the brake caliper is defined by a laterally and downwardly extending lug having an upper surface, wherein the upper surface defines a rounded edge.
A disc brake assembly comprising:
- a brake caliper having an outboard side;
- a brake pad;
- a pad spring including a spring planar region, radially outwardly curved ends and an aperture, wherein the pad spring is substantially elongate and defines a longitudinal direction;
- a pad retainer including a retainer planar region positioned at a first radius to restrain radial movement of the brake pad, wherein the pad retainer is secured to the outboard side of the brake caliper at a second radius that is less than the first radius, the pad retainer further including a crook at an end of the retainer planar region, wherein the spring planar region engages the pad retainer, thereby defining an engaging region of the spring planar region, and a lateral edge region of the engaging region adjacent to the outboard side of the brake caliper is defined by a laterally and downwardly extending lug having an upper surface, wherein the upper surface defines a rounded edge;
- and
- a backplate including complementary curved surfaces and a backplate protrusion, wherein the radially outwardly curved ends of the pad spring radially retain the pad spring on the backplate and the complementary curved surfaces of the backplate abut the radially outwardly curved ends of the pad spring, and wherein the backplate protrusion of the backplate is located in the aperture of the pad spring to prevent axial movement between the pad spring and the backplate.
A method of making a disc brake assembly including a brake caliper having an outboard side, a brake pad, a pad spring including a spring planar region that is substantially elongate and defines a longitudinal direction, and a pad retainer including a retainer planar region positioned at a first radius to restrain radial movement of the brake pad,
- wherein the pad retainer is secured to the outboard side of the brake caliper at a second radius that is less than the first radius, the pad retainer further including a crook at an end of the retainer planar region, wherein the spring planar region engages the pad retainer, thereby defining an engaging region of the spring planar region, and a lateral edge region of the engaging region adjacent to the outboard side of the brake caliper is defined by a laterally and downwardly extending lug having an upper surface, wherein the upper surface defines a rounded edge, the method comprising the steps of:
- stamping a pad spring blank from sheet metal to form the pad spring including a laterally extending lug;
- performing a pressing operation to bend the laterally extending lug downwardly to provide the laterally and downwardly extending lug and to round the upper surface of the laterally and downwardly extending lug to form the rounded edge;
- and
- assembling the disc brake assembly.
Dependencies are inferred from the claim text.