Variable position anchor assembly for adjusting brake shoes in a drum brake

摘要

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.

主权项

1. An anchor assembly for adjusting the position of first and second brake shoes in a drum brake, comprising:
first and second adjuster shafts each having a plurality of threads; a first pilot connector configured to engage a first end of said first brake shoe, said first pilot connector having a plurality of threads in engagement with said plurality of threads of said first adjuster shaft; and, a second pilot connector configured to engage a first end of said second brake shoe, said second pilot connector having a plurality of threads in engagement with said plurality of threads of said second adjuster shaft; wherein rotation of said first adjuster shaft causes longitudinal movement of said first pilot connector along a first axis to adjust a position of said first brake shoe and rotation of said second adjuster shaft causes longitudinal movement of said second pilot connector along a second axis to adjust a position of said second brake shoe wherein each of said first and second adjuster shafts includes a head at one end, said head defining a gear and wherein said gears of said first and second adjuster shafts comprise worm gears further comprising first and second worm shafts in mesh with said gears of said first and second adjuster shafts wherein said first axis intersects a plane coincident with a rotational axis of said first worm shaft at an acute angle and said second axis intersects a plane coincident with a rotational axis of said second worm shaft at an acute angle.