| 摘要 |
A drum brake (10) is provided which has a pair of brake pads (12), each pad being moveable generally radially outwardly into contact with a brake drum by a respectiv operating lever (14) which is acted on at one end by a brake applying means (15) and pivoted (16) at the other end from a backplate (11). Each pad is contacted by a portion (14c) of the respective operating lever intermediate the lever ends and is moved radially outwardly between a pair of circumferentia½y spaced abutments (45) which extend generally perpendicular to the backplate (11) and which react braking torque when the brake is applied. The required pad to drum clearance is established by knock-back of the drum on the pads (12). |
