Patent ID: 6497310
Filing Date: 2002-12-24
Classification: F16D

Abstract:
A drum brake device comprising:a driving force generating unit for generating a driving force responsive to an application of brakes to a vehicle; a first shoe having a first contact surface 2a proximate an inner peripheral surface of a rotary drum and being moved to contact the inner peripheral surface of the drum based on the driving force generated by the driving force generating unit; a second shoe having a second contact surface 3a proximate the inner peripheral surface of the drum and being moved in connection with the first shoe; a first lever having a contact portion that contacts with the first shoe and applies a load in a direction toward the inner peripheral surface of the drum to the first shoe based on the driving force of the driving force generating unit; a second lever having a contact portion that contacts with the second shoe and applies a load in the direction toward the inner peripheral surface of the drum to the second shoe based on the driving force of the driving force generating unit; a strut connected to the first lever and the second lever to connect the first lever to the second lever; an anchor member for receiving an anchor load generated by the first shoe or the second shoe; and a third lever connected to a portion of the first lever between the connection portion of the first lever to the strut and the contact portion of the first lever with the first shoe, said third lever feeding back a load applied to the anchor member to the first lever.