| 摘要 |
1. An automatically adjustable strut for a drum brake adapted to be mounted adjacent actuating means (28) disposed between two first ends (30, 32) of a pair of shoes (12, 14) provided with friction members (24, 26), said strut (44) supported by each of its ends on each of the two shoes (12, 14) comprising a device automatically extending in response to wear of the friction members, comprised by a screw-nut-mechanism (66, 72) controlled by a detent pawl (84) engaging teeth (74) of one of the elements (72) of the screw-nut-mechanism (66, 72), characterized in that said detent pawl is supported by a resilient leaf (80) provided at said strut (44), said leaf (80) being resiliently spread from said strut (44), with the brake being at its rest position, by means of a pivoting lever (79) mounted on said lever by pivoting allowing a movement of said leaf (80) and said strut (44) towards each other when said shoes (12, 14) are spread apart. |
