| 摘要 |
A brake shoe assembly (14,16) includes a brake lining (26) and a brake lining wear sensor (36). The brake lining (26) has a predetermined thickness which gradually wears away as the brake shoe assembly (14,16) is used to brake a vehicle. The brake lining wear sensor (36) has a pair of spaced electrical conductors (140,240,340,440) and an electrical resistance located across the pair of spaced conductors (140,240,340,440) for indicating the thickness of the brake lining (26). The brake lining wear sensor (36) is positioned to wear away concurrently with the brake lining (26), thereby continuously changing the electrical resistance across the pair of spaced conductors (140,240,340,440). In this manner, the electrical resistance across the pair of spaced conductors (140,240,340,440) is used to determine the thickness of the brake lining (26). The brake lining wear sensor (36) can be assembled in alternative embodiments as disclosed. <IMAGE> |
