| 摘要 |
PROBLEM TO BE SOLVED: To reduce the repair cost of an electronic control unit 2. SOLUTION: In an actuator 1 for controlling the hydraulic pressure for a vehicular brake, a reservoir 3, a pump 4, a pressure-increasing control valve 5 and a pressure-reducing control valve 6 are built in a housing 10, and a motor M for the pump 4 and the electronic control unit 2 for controlling the motor and both control valves are mounted on an outer side of the housing. In the electronic control unit 2, a control substrate 21 for the motor and both control valves is provided in a casing 20 attachably/detachably from the outside as shown by a chain line in the figure, and the control substrate 21 is connected to the motor or the like by an attachable/detachable connector 25. If the control substrate is attachable/detachable, the control substrate can be easily changed, and the cost therefore can be more reduced in comparison with a case of changing the entire electronic control unit 2. In addition, the electronic control unit structure is miniaturized because the casing 20 and the housing can be fixed only by joining parts, in other words, can be fixed by an inside screw 31. COPYRIGHT: (C)2005,JPO&NCIPI
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