An anti-squeal shim structure and a disc brake apparatus comprising the same

摘要

In order to provide a shim structure (A1;A4) capable of controlling the generation of a voltage by the difference in the standard electrode potentials specific to metals between an aluminum caliper and a metal plate, the shim structure (A1;A4) abutting against the backing plate (4) of a friction material (3), which forms a disc pad (B), is constituted by providing rubber layers (11) on both sides of an aluminum alloy plate (10). Since the aluminum alloy plate (10) is used for the metal plate constituting the shim structure (A1;A4), even when a steel caliper is replaced with the aluminum caliper, the generation of the voltage generated between metals is controlled to a lesser degree, thereby preventing corrosion of the caliper arising therefrom. <IMAGE>