초록 ▼

A silencer structure is mounted on a friction pad of a disc brake assembly by retaining pins which extend through the shim structure and into the backing plate for preventing dislodging of the shim structure in service. The force of the rotating action of the brake disc is at a 90.degree. angle to t

A silencer structure is mounted on a friction pad of a disc brake assembly by retaining pins which extend through the shim structure and into the backing plate for preventing dislodging of the shim structure in service. The force of the rotating action of the brake disc is at a 90.degree. angle to the retaining pin. This 90.degree. angle provides effective resistance to any shifting or rotation of the shim structure with respect to the backing plate during actuation of a disc brake apparatus. The retaining pin has an outer surface which is disposed substantially flush with the outer surface of the shim structure. The outer surface of the retaining pin therefore does not interfere with the positioning or functioning of an actuator piston structure, caliper structure or other disc brake structure. The flush mounting allows the system of the present invention to be used for any caliper design.

대표청구항 ▼

1. A friction pad and shim structure for sound dampening brake squeal noise in a disc brake apparatus in which an actuator element of a piston/caliper structure is engageable with an outer, contact surface of the friction pad and shim structure to press a disc side surface of the friction pad and sh

1. A friction pad and shim structure for sound dampening brake squeal noise in a disc brake apparatus in which an actuator element of a piston/caliper structure is engageable with an outer, contact surface of the friction pad and shim structure to press a disc side surface of the friction pad and shim structure against a rotatable disc for exerting a frictional braking force on the disc and wherein the brake squeal noise is of a relatively high frequency and is produced by vibration of the friction pad structure during braking actuation, said friction pad and shim structure comprising,a backing plate, a friction pad, a shim structure, and pin fasteners extending through the shim structure and into the backing plate, said backing plate comprising a steel plate having at least two pin receiving holes in at least two selected backing plate locations for receiving one end portion of a pin fastener in a friction tight, irreversible fit within a pin receiving hole, said shim structure comprising a sheet of aluminum shim material long and wide enough to be configured to cover at least 50% of the area of the outer, contact surface of the backing plate, said sheet of shim material having an inner surface and at least two pin receiving holes on at least two selected shim structure locations, said shim structure also comprising a continuous layer of adhesive on the inner surface only of the sheet of aluminum and adhering the shim structure to the outer, contact surface of said backing plate, said sheet of shim material having a thickness large enough to provide, in combination with the membrane of adhesive, effective sound dampening of the brake squeal noise produced by vibration of the friction pad structure, the locations of the pin receiving holes in the shim material being aligned with the locations of the pin receiving holes in the backing plate, said pin fasteners comprising a retaining pin extending through each opening in the sheet of shim material and into the aligned opening in the backing plate, each retaining pin being deformed within the opening in the backing plate to provide a friction tight, irreversible fit in the related, aligned hole in the backing plate and having the top surface of the retaining pin substantially flush with or within the outer surface of the sheet of shim material, the retaining pin resisting shifting or rotation of the shim structure with respect to the backing plate and the positioning of the top surface of the retaining pin with the outer surface of the sheet of shim material not interfering with the positioning or functioning of an actuator piston structure, caliper structure, or other disc brake structure relative to the surface of the backing plate covered by the shim structure.