US 2026/0296121 A1 · HEIGHT-ADJUSTABLE SUSPENSION SYSTEM AND METHOD OF USE THEREOF

Abstract

An adjustable suspension system is provided for vehicles, enhancing accessibility for wheelchair users by integrating a kneel mechanism into OEM suspension assemblies. The system features a rocker link mechanism, pivotably coupled between an actuator and the vehicle's subframe or control arm, or alternatively, a pivoting pulley assembly that aligns with a chain to mitigate damaging lateral forces, enabling dynamic height adjustment with minimal modification and cost. The invention utilizes flexible or rigid connections to transmit motion, reducing stress and inefficiencies associated with prior art chain and pulley systems. The kneeling system allows the vehicle to achieve a knelt height, facilitating ramp access and complying with standards for maximum incline angles. Various configurations of flexible connections, including a slider link, provide advantages and adaptability, ensuring robust and efficient operation. This invention overcomes limitations of prior art by offering a reliable and versatile solution for modifying vehicles to meet accessibility needs.

Claims20

Dependent claims

An adjustable suspension system for a vehicle having a body, the adjustable suspension system comprising:

a subframe configured to be coupled to the body;
at least one control arm configured to be pivotably coupled to the subframe adjacent a first end of the control arm and coupled to a wheel adjacent a second end of the control arm;
at least one spring device coupled between the control arm and the body;
and
a kneel system configured to be coupled between the control arm and the subframe, the kneel system comprising:
an actuator having a moveable element;
a tensile member, wherein a first end of the tensile member is coupled to the moveable element and a second end of the tensile member is coupled to the control arm;
and
a pulley assembly coupled to a fixed structure of the vehicle, the pulley assembly configured to guide the tensile member between the actuator and the control arm, the pulley assembly comprising:
a bracket configured to be coupled to the fixed structure;
and
a pulley rotatably coupled to the bracket, wherein the pulley engages the tensile member;
wherein the bracket is pivotably coupled to the fixed structure such that the pulley can rotate relative to the fixed structure.

10 more elements

Dependencies are inferred from the claim text.

Height-adjustable suspension system and method of use thereof

Life of this patent

Height-adjustable suspension system and method of use thereof

Life of this patent

Abstract

Claims20