| 摘要 |
PCT No. PCT/SE93/01102 Sec. 371 Date Aug. 7, 1995 Sec. 102(e) Date Aug. 7, 1995 PCT Filed Dec. 22, 1993 PCT Pub. No. WO94/14626 PCT Pub. Date Jul. 7, 1994A leaf spring for suspension of a rigid axle of a vehicle. The spring is joined at its first and second ends to a frame of a vehicle. The spring has a first portion extending from a first end to the junction with the axle in which the thickness of the spring increases along a parabolic curve from a first starting value at the first end to a first maximum value at the juncture with the axle, and a second portion which has a thickness which increases along a parabolic curve from the same first starting value at the second end to a second maximum value at the junction with the axle, the second maximum value being less than the first maximum value so that the stiffness of the first portion is greater than the stiffness of the second portion to such an extent that the radius of curvature of a path along which the axle is moving during flexing of the spring is increased by at least 5% compared to a corresponding spring having substantially the same first and second maximum values. Alternatively, the maximum values may be the same and the starting values may differ.
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