Abstract: An anchor assembly is provided that permits adjustment of the brake shoes in a drum brake to account for wear. The assembly includes first and second adjuster shafts each having a plurality of threads and first and second pilot connectors. The pilot connectors each have a plurality of threads in engagement with the threads of a corresponding adjuster shaft. The pilot connectors each engage one end of a corresponding brake shoe. Rotation of each adjuster shaft causes longitudinal movement of a corresponding pilot connector in engagement with a corresponding brake shoe along an axis to adjust a position of the brake shoe.

Abstract: 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 respective 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 circumferentially 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).

Abstract: A brake actuating device has an actuator functionally connected between a piston and a brake pedal lever. The actuator is capable of varying the path length of a force-conducting connection between the brake pedal lever and the piston of the brake cylinder via a displaceable element. A spring element acts on the brake pedal lever. The spring force varies during the variation of the path length such that a sum of the spring force and a force acting on the brake pedal lever from the brake cylinder remains essentially unchanged. The spring element is fastened with one end to the displaceable element and with the other end to the brake pedal lever with the interposition of a tensioning mechanism, which is guided by a cam track provided on the brake pedal lever.

Abstract: An anchor assembly is provided that permits adjustment of the brake shoes in a drum brake to account for wear. The assembly includes first and second adjuster shafts each having a plurality of threads and first and second pilot connectors. The pilot connectors each have a plurality of threads in engagement with the threads of a corresponding adjuster shaft. The pilot connectors each engage one end of a corresponding brake shoe. Rotation of each adjuster shaft causes longitudinal movement of a corresponding pilot connector in engagement with a corresponding brake shoe along an axis to adjust a position of the brake shoe.

Abstract: A cam mechanism 7 provided as a shoe drive mechanism includes a cam supporting plate 21 being loosely and rotatably fitted on an anchor pin 10 for receiving a shoe operating force, a first cam plate 23 rotatably connected to the cam supporting plate 21 at an outer cam supporting position which is a position shifted away from the anchor pin 10 radially outwardly of the drum, a second cam plate 25 rotatably connected to the cam supporting plate 21 at an inner cam supporting position which is away from the anchor pin 10 toward an operating force generator 6, so that a pair of brake shoes 3, 4 are opened outwardly by the separate cam plates 23, 25, respectively.

Abstract: A drum brake assembly for a vehicle wherein first and second brake shoes are positioned on a backing plate and radially aligned with a drum by a resilient arrangement. The resilient arrangement is characterized by first and second spring each of which have a first helical coil located between a first engagement section and a second engagement section, a second helical coil that extends from a first end of the first engagement section to a second end and a third helical coil that extends from a first end of the second section to second end. The second ends of the first and second engagement sections are connected to the backing plate such that the first and second engagement sections contact the first and second shoes and the second and third helical coils urge the first and second shoes toward the backing plate while the first helical coils urges the first and second shoes toward an actuator and an adjuster to define a rest position for the first and second brake shoes.

Abstract: An automatic stroke adjustment device for a brake actuator having clutch rings (240, 340, 440, 540, 546, 640) making an irreversible screw engagement relatively rotatable for the amount of exceeding the backlash by releasing the clutch engagement to rotate when exceeding the backlash of reversible screw engagement and maintaining the clutch engagement when in releasing the brake actuator while the brake actuator is in an active state to improve the processability, reduce the weight, and prevent overadjustment of the shoe clearance during the thermal expansion of the brake drum.

Abstract: A brake cable mounting structure for a drum brake has sufficient support to withstand the reaction force during the brake operation, a function to prevent damage to an inner cable and to prevent water ingress into the brake, a simple structure with less number of parts, and a low-cost advantage. Tubular members 10a, 10b are integrally formed on a back plate 10 by pressing, and a casing cap 22a of an outer casing 22 constituting a brake cable 20 is attached in the tubular members 10a, 10b.

Abstract: A brake assembly of a vehicle for enduring corrosive road effects is disclosed. The brake assembly includes a mounting bracket having a bore. An anchor pin extends through the bore of the mounting bracket to rotatably support a brake shoe of the assembly. More specifically, the anchor pin includes first and second end portions and an outer surface, and the brake shoe rotates about the first and second end portions of the anchor pin relative to the mounting bracket. A rubber layer is disposed between the outer surface of the anchor pin and the bore of the mounting bracket to permit rotation of the brake shoe about the mounting bracket in the event the brake shoe becomes corrosively bonded to the pin. In such an event, a flexural stiffness of the rubber layer enables rotation of the anchor pin relative to the mounting bracket, and since the brake shoe is bonded to the anchor pin, the brake shoe also rotates relative to the mounting bracket thereby maintaining operation of the brake assembly.