Front suspension structure of automotive vehicle

Abstract

In a double-wishbone type front suspension structure, upper and lower arms are pivotally supported at a vehicle-body side via front-and-rear pivotal portions, axial lines of resilient bushes of the front and rear pivotal portions of the arms extend in a longitudinal direction, a knuckle-side pivotal portion of the upper arm is positioned in back of a knuckle-side pivotal portion of the lower arm,and a lower end portion of a damper unit provided between a vehicle body and the lower arm is connected to the lower arm such that the damper unit is positioned perpendicularly to the axial lines of the lower arm in a side view and an upper end portion is pivotally supported at the vehicle body via a rotational axis extending in the longitudinal direction.

Description

Technical field [0001] The present invention relates to a front suspension structure of an automobile, in particular to a double wishbone type front suspension structure. Background technique [0002] As a double wishbone type front suspension structure, the following structure is widely adopted: the two arms (upper arm and lower arm) provided on the upper and lower sides and extending in the vehicle width direction are pivotally supported on the vehicle body side ends. On the body side beam, the wheel side end is connected via a ball joint to a knuckle member (wheel support) that rotatably supports the wheel, and a buffer device is provided between the vehicle body and the lower arm. [0003] In addition, as a double wishbone type front suspension structure equipped with the above-mentioned shock absorber, the shock absorber is often inclined toward the kingpin rear tilt axis or the kingpin inward tilt axis. The following Patent Document 1 is one of them. [0004] The shock absorbe...

AI Technical Summary

Problems solved by technology

[0008] However, in Patent Document 2, the link mechanism (50) is installed obliquely between the lower arm (21) and the spring damper unit (30), so there is a problem that the number of parts and movable parts increase.

[0009] That is to say, there is room for improvement in both Patent Documents 1 and 2 in terms of increasing the support rigidity of the wheels to improve handling, and making the wheels move up and down more smoothly to improve road following and ride comfort.

Images