Patent ID: 8235474

Claim:
An electric disk brake, comprising: an electric motor; a rotation-linear motion converting mechanism for converting a rotational movement of the electric motor into a linear movement; a pad pressing member for pressing a brake pad against a disk rotor by the linear movement of the rotation-linear motion converting mechanism; and a controller for, when the brake is in operation, supplying an electric current to the electric motor so as to generate a target thrust force of the pad pressing member, wherein the pad pressing member, after returning to a predetermined position, is maintained in the position even though the controller stops supplying an electric current to the electric motor; and when the brake is not in operation, the controller supplies a predetermined pad-retracting-control electric current to the electric motor so that the pad pressing member is urged backward while being maintained in the position, whereby when the disk rotor contacts the brake pad, retracting of the brake pad is initiated, and when the disk rotor does not contact the brake pad, the position of the brake pad is maintained.