Patent ID: 7434668
Filing Date: 2008-10-14
Classification: F16D,Y10T

Abstract:
1. A brake cable connecting apparatus of a brake actuating mechanism for a drum brake, said brake actuating mechanism comprises: a strut having a first shoe engagement portion which engages with one brake shoe and two facing surface walls which extend from a portion adjacent to said first shoe engagement portion in a direction away from said one brake shoe; a brake lever positioned in a space between the two facing surface walls, having a pivot portion which is pivotally supported on a free end of the two facing surface walls; a second shoe engagement portion which engages with the other brake shoe adjacent to said pivot portion, and a cable connecting groove formed on a free end away from said second engagement portion thereof; and a brake cable which is connected to said cable connecting groove via a connecting pin; said brake actuating mechanism moves said brake shoes away from each other as a result of relative rotation of said strut and brake lever about said pivot portion by operation of said brake cable, and said drum brake comprises a resilient member; if two facing plates of a clevis of said brake cable are placed into a space between the two facing surface walls of the strut and the brake lever and engagement holes of said clevis are positioned to allow engagement with the connecting pin, and then if said brake cable is pulled in the cable operating direction to connect to said free end of the brake lever while the connecting pin engages with the engagement holes, then said resilient member is deformed to allow the connecting pin to move into said cable connecting groove of the brake lever, and said brake actuating mechanism comprises a cable disengagement restriction portion, said cable disengagement restriction portion prevents the disengagement of the clevis from the free end of the brake lever if said brake cable moves in a cable releasing direction, wherein a regulating projection is formed on one of two facing walls of the strut at a cable releasing side and is positioned perpendicularly adjacent to the cable disengagement restriction portion, and said regulating projection regulates a depth of the insertion of the connecting pin when the connecting pin is inserted into the engagement holes of the clevis in an axial direction of the connecting pin for the operation of connecting the brake cable to the brake lever.