| 摘要 |
PROBLEM TO BE SOLVED: To simplify the manufacturing process for an electric power steering circuit device, and at the same time, to increase reliability of the device. SOLUTION: This electric power steering circuit device is equipped with a motor 40 which outputs an auxiliary torque to a steering wheel of a vehicle, a battery 41 which feeds a driving current to the motor, a bridge circuit 44 comprising a plurality of semi-conductor switching elements which switch the driving current for the motor in response to the auxiliary torque, and a capacitor 42 which absorbs wripples of the driving current. The electric power steering circuit device is also equipped with a relay 46 which turns on/off the driving current, a coil 49 which prevents noises generated at the time of a switching motion of the bridge circuit from flowing out to the outside, a power board 65 where a wiring pattern through which the driving current flows is formed, and a control board 64 which controls the bridge circuit based on a steering torque of the steering wheel. Then, at least the bridge circuit 44, the capacitor 42, the relay 46 and the coil 49 are mounted on the power board 65 as the constitution. COPYRIGHT: (C)2004,JPO |
