专利名称：Composite leaf spring 发明人：John R. Strong
申请号：US06/371210
申请日：19820423
公开号：US04468014A
公开日：
19840828
专利内容由知识产权出版社提供
摘要：A composite leaf spring for use in a vehicle suspension system having a pair of metal outer skins and a stiff plastic core bonded between the skins. The core can be made of any one of a variety of filled or unfilled polymers which has a relatively high shearing strength and sufficiently isotropic properties so as to handle stresses in all directions. An important aspect of the invention is that it provides for a simple and inexpensive method for manufacturing a contoured composite leaf spring which includes the steps of first positioning the skins in a spaced relation within a female mold and then pouring or injecting the core material into the space between the skins. Preferably, the skins are of uniform width and thickness to reduce manufacturing costs. In most common vehicle applications, the spring would have a point of maximum thickness in the central section where the bending moment is greatest and would be tapered toward each end. The spring skins should meet the following criterion:
if F equals the static loaded force (in lbs) exerted on the spring, which is supported at its ends;
L equals the length of the spring (in inches) between the end supports;< P>
N equals the number of composite leaves in the spring (each leave comprising twospring framework是什么意思
skins bonded to a core); and< P>
T.sub. s equals the thickness (in inches) of each skin in each composite leaf;
then: ##EQU1##
申请人：PACCAR, INC.
代理机构：Seed and Berry
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