Primary air spring and secondary leaf suspension for vehicle

摘要

A suspension for a vehicle having a chassis rail and a longitudinal axle arranged substantially orthogonal thereto. The vehicle suspension has a primary air-responsive spring that couples between the chassis and the axle of the vehicle. The primary spring can be a coil spring that surrounds an air helper spring. A secondary leaf spring has a first end for pivotally coupling to the chassis of the vehicle at a secondary pivot coupling, and a second end for coupling to the axle. The longitudinal configuration of the secondary leaf spring can be arranged to be angularly displaced with respect to a chassis rail of the vehicle.

主权项

1. A vehicle suspension arrangement for a vehicle having a chassis rail and a transverse axle arranged substantially orthogonal to the chassis rail, the vehicle suspension arrangement comprising:
an air-assisted primary spring having a resilience characteristic responsive to air pressure, a first portion for coupling to a chassis of the vehicle at a primary coupling, and a second portion for coupling to the transverse axle; and a secondary leaf spring having a plan view longitudinal configuration, a first end for pivotally coupling to the chassis of the vehicle at a secondary pivot coupling, and a second end for coupling to the transverse axle; wherein the entire length of the plan view longitudinal configuration of said secondary leaf spring extends in a single substantially linear direction that is arranged at a predetermined angular displacement with respect to the chassis rail, the angular displacement of the secondary leaf spring relative to the chassis rail being from about 5 degrees to about 10 degrees.