| 摘要 |
This invention provides a duo-two leading type drum brake device which simplifies a drum brake structure as well as improves a transmission efficiency of a application force from a shoe actuator to brake shoes. A pivot lever 60 has an intermediate portion pivotally supported on the brake shoes 40. A shoe-actuator 20 is positioned adjacent to the first anchors 30, 30 and being disposed between the ends 60a, 50a of the pivot lever 60 and the other brake shoe 50. A strut 70 is positioned between and functionally engaged with the other ends 60b, 50b of the pivot lever 60 and the other brake shoe 50. An application force of the shoe actuator 20 is transmitted to the brake shoe 40 via a pivot section of the pivot lever 70 and transmitted to the other brake shoe 50 directly from the shoe-actuator 20 and indirectly via the strut 70.
|
