| 主权项 |
1. A disc brake pad, configured to be supported to a pad supporting member so as to move in an axial direction of a rotor, the disc brake pad comprising:
a lining; and a back plate, supporting a rear surface of the lining, having a projecting lug portion and a torque transfer surface at a side edge portion of the back plate which is situated at an exit side of the rotor, wherein the projecting lug portion projects towards the exit side, the torque transfer surface is disposed at a portion of the side edge portion which is situated further inwards than the lug portion in a radial direction of the rotor, the projecting lug portion includes a first projecting arc-shaped surface portion which is disposed at a radially innermost portion of a radially inner surface of the lug portion, and a portion of the torque transfer surface which lies near to a radially outer end of the torque transfer surface and which is situated further radially inwards than both of the radially inner surface and an action line of a brake tangential force exerted on braking is most projected toward the exit side on the torque transfer surface. |
