| 摘要 |
A disk brake device for an electric brake system is provided to reduce the length of a gear set to the width direction of a car body by improving the position of a first and second motor. A disk brake device for an electric brake system comprises a first motor(36) and a second motor(37). The first motor is equipped in a rear wheel and a front wheel to transmit the power with a sun gear(35a) of a gear set(35). The second motor is equipped in the rear wheel and the front wheel to transmit the power to a ring gear of the gear set. The second motor connected with the ring gear is located at the outside of the first motor connected with the sun gear. The second motor comprises a stator and a rotor. The stator comprises an iron core supporting a coil and a frame supporting the iron core. The rotor is installed in the stator in order to be rotatable. The rotor has a hollow shaft shape.
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