| 摘要 |
This dual mode drum brake provides less stroke loss during the brake operation; a stable parking brake effectiveness; and a comfortable feeling for the operator during the brake operation. A wheel cylinder actuator (15) is positioned between ends (lid) and (12d) of first and second brake shoes (11), (12); an anchor block (16) is positioned between the other ends (11e) and (12e); a shoe clearance adjustment device (18) is extended adjacent to the wheel cylinder actuator (15); a parking brake actuator (23) is extended adjacent to the anchor block (16); a bent portion (22c), formed on one side (22b) of a pivot lever (22) pivotally supported on the first brake shoe (11), is inserted between the first brake shoe (11) and the shoe clearance adjustment device (18) while the other side (22d) of the pivot lever (22) functionally engages with the parking brake actuator (23).
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