| 摘要 |
<p>A vehicle brake monitor for a brake actuator (20) including a housing (22), a reciprocal push rod (36) extending through an opening in the housing (22) and a stone shield (62) mounted in the housing opening. An annular sleeve (66) surrounds the push rod (36) which is integrally formed of plastic including opposed sleeve portions (68, 70) which are generally semicircular in cross-section and a longitudinal integral flexible hinge portion (72) interconnecting the adjacent sides of the sleeve portions (68, 70), such that the annular sleeve (66) may be received on the push rod (36), and an adjustable connector element (82) interconnecting the opposed sides of the sleeve portions (68, 70). The sleeve (66) includes an elongated magnet (80), preferably a ceramic magnet having face portions which are magnetized with adjacent north and south poles and the stone shield (62) includes a Hall-effect (138) sensor which senses the location of the sleeve (66) as the push rod (36) reciprocates through the stone shield (62).</p> |
