Leaf spring assembly having full leaf leaf spring component...

F - Mech Eng,Light,Heat,Weapons – 16 – F

Patent

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F16F 1/18 (2006.01) B60G 11/02 (2006.01)

Patent

CA 2402049

A leaf spring assembly (60) shown in figure 4 for use as an active component in vehicle suspension systems inlcudes a full leaf leaf spring component (63A) and a half leaf leaf spring component (64) connected thereto. The full leaf leaf spring (63A) extends substantially the entire length of the leaf spring assembly (60) and the half leaf leaf spring (64) extends substantially the entire length of one of the cantilevers (66, 68). In a preferred form, when the leaf spring assembly (60) has front (66) and rear (68) cantilevers of substantially unequal length, the leaf spring assembly (60) provides for a constant caster angle for its associated axle during deflection of the assembly due to jounce and rebound. In another preferred form, when the leaf spring assembly (60) has front (66) and rear (68) cantilevers of substantially equal length, the leaf spring assembly (60) provides for a varying caster angle for its associated axle during deflection of the assembly due to jounce and rebound. In yet another preferred form, the axle seat portion (70) of the full leaf leaf spring (63A) is designed such that it biases the position of the axle associated with the leaf spring assembly (60) to a predetermined caster angle.

Dans cette invention, un ensemble (60) ressort à lames destiné à être utilisé comme composant actif dans des systèmes de suspension de véhicules comprend un composant (63A) à ressort lame sur lame complet auquel est relié un composant (64) à ressort lame sur lame incomplet. Le ressort (63A) lame sur lame complet s'étend sensiblement sur toute la longueur de l'ensemble (60) ressort à lames, et le ressort (64) lame sur lame partiel s'étend sensiblement sur toute la longueur d'un des leviers en porte-à-faux (66, 68). Dans un premier mode préféré de réalisation, lorsque l'ensemble (60) ressort à lames présente des leviers en porte-à-faux avant (66) et arrière (68) de longueur sensiblement inégale, l'ensemble (60) ressort à lames fournit un angle de chasse constant pour son axe associé au cours de la flexion de l'ensemble, en raison des rebonds. Dans un second mode préféré de réalisation, lorsque l'ensemble (60) ressort à lames présente des leviers en porte-à-faux avant (66) et arrière (68) de longueur sensiblement égale, il fournit un angle de chasse variable à son axe associé au cours de la flexion de l'ensemble, en raison des rebonds. Dans un autre mode préféré de réalisation, la partie siège (70) de l'axe du ressort (63A) lame sur lame complet est conçue de manière à amener à force la position de l'axe associé à l'ensemble (60) ressort à lames sur un angle de chasse prédéterminé.

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