Patent ID: 9441694
Filing Date: 2016-09-13
CPC Classification: B61H,F16D

Claim Text:
1. A disk brake friction pad assembly in which a plurality of lining assemblies are oscillatably supported by a guide plate for receiving a braking torque and the lining assemblies are pressed to a disk rotor, wherein each of the lining assemblies includes a back plate portion thereof fixed to a back of a friction member, a plate engagement portion with its outer peripheral surface oscillatably engaged with a guide hole portion formed in the guide plate and a retaining flange portion having an outer diameter larger than the guide hole portion, wherein each of the lining assemblies is inserted into the guide hole portion from the back side of the guide plate, transmits a braking torque applied when the disk rotor contacts with the friction member from the plate engagement portion to the guide plate, wherein each of the lining assemblies is supported and urged toward the guide plate by a spring member provided on the back side of the back plate portion, wherein a clearance hold mechanism for holding a clearance between the guide plate and a torque receiving plate is provided in the vicinity of a central portion of the torque receiving plate and the guide plate, the torque receiving plate being spaced by a clearance from the back plate portion and an outer periphery of the torque receiving plate being fixed to the guide plate, wherein a rotation preventive plate straddling over the lining assemblies to apply a pressure from the torque receiving plate to the lining assemblies is provided between the torque receiving plate and the guide plate, and wherein the rotation preventive plate includes a rotation preventive mechanism engaged with an engagement portion formed distant from the center of the back of each back plate portion to prevent each lining assembly against rotation and an opening through which the clearance hold mechanism penetrates.