| 摘要 |
In a rear suspension system of an automobile having a general construction of the double wishbone type including a lower arm pivotably connected with an axle hub at a position below an axle axis via front and rear outboard pivot joints and with a vehicle frame via front and rear inboard pivot joints, with the rear inboard pivot joint being positioned substantially inboard relative to the front inboard pivot joint, with each of the pivot joints including an elastic bush allowing a slight elastic resiliency of the joint in three dimensional directions, at least one of the bushes of the front inboard and front and rear outboard pivot joints has a non-uniformity of modulus of elasticity as viewed in a cross section perpendicular to its pivot axis such that the modulus of elasticity is lower along a first inclination against horizontality of ascending toward outboard than along a second against horizontality of descending toward outboard.
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