초록 ▼

An arrangement of a vehicular suspension system is disclosed in which each drive circuit which outputs a drive current to a corresponding one of the actuators installed on each shock absorber is arranged at a position adjacent to the corresponding one of actuators. Thus, transmission of signals from

An arrangement of a vehicular suspension system is disclosed in which each drive circuit which outputs a drive current to a corresponding one of the actuators installed on each shock absorber is arranged at a position adjacent to the corresponding one of actuators. Thus, transmission of signals from each drive circuit to the corresponding one of the actuators is unaffected by electrical disturbance. In addition, a length of a wire connected between the corresponding one of the actuators and the drive circuit can be shortened. The generation of noises causing the electromagnetic wave interference can be prevented. In another preferred embodiment, a printed circuit board containing each drive circuit is mounted in a casing of the corresponding one of the actuators of the shock absorbers.

대표청구항 ▼

An arrangement of a suspension system for an automotive vehicle, comprising: a) a plurality of shock absorbers, each having an actuator; b) a control unit; and c) a plurality, corresponding in number to said plurality of shock absorbers, of drive circuits, each being electrically connected with said

An arrangement of a suspension system for an automotive vehicle, comprising: a) a plurality of shock absorbers, each having an actuator; b) a control unit; and c) a plurality, corresponding in number to said plurality of shock absorbers, of drive circuits, each being electrically connected with said control unit and arranged at a position adjacent to a corresponding one of said actuators such that transmission of signals from each drive circuit to the corresponding one of said plurality of actuators is unaffected by any electrical disturbance, which further includes a plurality, corresponding in number to said plurality of shock absorbers, of determination circuits, each of said plurality of determination circuits being electrically connected to said control circuit and to one of said plurality of drive circuits, each of said plurality of determination circuits commanding a direction of a drive signal from a corresponding one of said plurality of drive circuits to the corresponding one of said plurality of actuators on the basis of an output signal of the control unit, and wherein each of said plurality of determination circuits is installed together with the corresponding one of said plurality of drive circuits at the position adjacent to the corresponding one of the actuators, both of said plurality of drive and determination circuits being physically separated from said control unit, wherein each of said plurality of determination circuits is installed together with the corresponding one of said plurality of drive circuits at an upper position within a housing of the corresponding one of said actuators, wherein each of said plurality of determination circuits is installed together with the corresponding one of said plurality of drive circuits at a position within said housing of the corresponding one of said actuators lower than the corresponding one of the actuators, wherein a printed circuit board containing the corresponding one of said plurality of drive circuits is installed within said housing of each of said plurality of actuators, wherein each of said plurality of actuators includes an electromagnetic coil whose ends are connected to the corresponding one of said plurality of drive circuits via relatively short wires, wherein each said printed circuit board is formed of a flexible, circular plate-like material and is mounted in a gap formed at an outer periphery side wall of said housing of the corresponding one of said actuators, and wherein each of said printed circuit boards contain the determination circuit associated with the corresponding one of said plurality of drive circuits and an abnormal state detection circuit for detecting an abnormal state of a drive pulse transmitted from the corresponding one of said plurality of drive circuits to the corresponding one of said actuators and a fail safe circuit which assures a safety operation of the corresponding one of said plurality of actuators on a basis of an output signal indicating the abnormal condition of the drive pulse of the corresponding one of said plurality of drive circuits derived from the corresponding one of said abnormal state detection circuits.