Flanged shim for disc brake squeal attenuation

A disc brake apparatus comprising:

• a brake support member;
• a brake rotor;
• a brake pad assembly slidably supported by said brake support member so as to be movable over a predetermined distance in the axial direction of said brake rotor;
• a caliper straddling said brake rotor and slidably mounted to said brake support member to allow sliding in the axial direction of the brake rotor, said caliper having a cylinder formed therein;
• and
• a piston slidably mounted in said cylinder of said caliper to allow sliding in the axial direction of said brake rotor, said piston facing said brake pad assembly at a side thereof remote from said brake rotor;
• said brake pad assembly comprising:
• a backing plate having a flat inner face facing said brake rotor and a flat outer face oriented opposite to said inner face and facing said piston;
• a friction member fixed to said inner face of said backing plate;
• and
• an anti-squeal shim immovably attached to said outer face of said backing plate;
• said anti-squeal shim including a flat support plate attached to said outer face of said backing plate and a straight flat flange plate;
• said support plate of said anti-squeal shim having an outer peripheral edge surrounding said support plate, said outer peripheral edge of said support plate including opposite outer and inner edges and opposite side edges;
• said flange plate being in the form of a flexible cantilever formed integrally with said support plate of said anti-squeal shim and extending from an entire length of an edge selected from the group consisting of said outer, inner and opposite side edges of said support plate of said anti-squeal shim in a direction perpendicularly away from the outer face of the backing plate and a face of said brake rotor that faces the backing plate;
• said flange plate of said anti-squeal shim spaced from said brake support member, said caliper and said piston.

A brake pad assembly for a disc brake apparatus, said brake pad assembly comprising:

• a backing plate having an inner face and an outer face oriented opposite to said inner face;
• a friction member having an outer face that faces and is fixed to said inner face of said backing plate;
• and
• an anti-squeal shim immovably attached to said outer face of said backing plate;
• said anti-squeal shim including a support plate attached to said outer face of said backing plate and a straight flat flange plate;
• said support plate of said anti-squeal shim having an outer peripheral edge surrounding said support plate, said outer peripheral edge of said support plate including opposite outer and inner edges and opposite side edges, wherein said outer peripheral edge of said support plate of said anti-squeal shim is located on said outer face of said backing plate within an outer peripheral edge of said backing plate so as to not extend beyond said outer peripheral edge of said backing plate;
• said flange plate being in the form of a flexible cantilever formed integrally with said support plate of said anti-squeal shim and extending from an entire length of an edge selected from the group consisting of said outer, inner and opposite side edges of said support plate of said anti-squeal shim.