IP Library › Granted Patent US 12668088
Granted Patent B2
US 12668088 · App. 19/032,901 · Granted Jun 30, 2026

Systems and methods for a suspension assembly on an electrified vocational vehicle

Inventors: Erik Ellifson (Oshkosh, WI); Steve Volkman (Oshkosh, WI)
Assignee: Oshkosh Corporation
B60G3/20B60G2200/144B60G2300/026B60G2300/50
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Quick Facts
Patent No.
US 12668088
App. No.
19/032,901
Granted
Jun 30, 2026
Kind
B2
Abstract

A suspension assembly for an electrified vehicle includes a knuckle, a subframe, an H-arm coupled between the knuckle and the subframe, a control link arranged above the H-arm and coupled between the knuckle and the subframe, and a spring coupled to a bottom surface of the frame rail. The H-arm and the control link are both arranged below the bottom surface of a frame rail.

Claims (37)

1 . A suspension assembly for an electrified vehicle, the electrified vehicle including a chassis having a frame rail, the suspension assembly comprising:

a knuckle;

a subframe;

an H-arm coupled between the knuckle and the subframe;

a control link arranged above the H-arm and coupled between the knuckle and the subframe; and

a spring coupled to a bottom surface of the frame rail and directly coupled to the knuckle;

wherein the H-arm and the control link are both arranged below the bottom surface of the frame rail.

2 . The suspension assembly of claim 1 , wherein the H-arm is coupled to the knuckle by a first set of two pivot joints and coupled to the subframe by a second set of two pivot joints.

3 . The suspension assembly of claim 2 , wherein the first set of two pivot joints and the second set of two pivot joints each extend outwardly from a cross member of the H-arm.

4 . The suspension assembly of claim 1 , wherein the H-arm includes four pivot joints.

5 . The suspension assembly of claim 4 , wherein each of the four pivot joints extends outwardly from a cross member of the H-arm.

6 . The suspension assembly of claim 1 , wherein the control link includes two connection points.

7 . The suspension assembly of claim 1 , wherein an entirety of the H-arm is arranged below a plane that extends parallel to the bottom surface of the frame rail.

8 . The suspension assembly of claim 1 , wherein the spring is coupled to the knuckle at a location that is between an interface between the H-arm and the knuckle and an interface between the control link and the knuckle.

9 . The suspension assembly of claim 1 , wherein the subframe is arranged below the bottom surface of the frame rail.

10 . A suspension assembly for an electrified vehicle, the electrified vehicle including a chassis having a frame rail, the suspension assembly comprising:

a knuckle;

a spring directly supported on the knuckle and coupled between the knuckle and the frame rail;

a lower control arm coupled to the knuckle and including four pivot joints; and

an upper control link coupled to the knuckle and including two connection points, one arranged at each distal end of the upper control link, wherein both the lower control arm and the upper control link are arranged below a bottom surface of the frame rail.

11 . The suspension assembly of claim 10 , further comprising a subframe, wherein the lower control arm is coupled between the knuckle and the subframe.

12 . The suspension assembly of claim 11 , wherein the subframe is arranged below the bottom surface of the frame rail.

13 . The suspension assembly of claim 11 , wherein an entirety of the lower control arm is arranged below a plane that extends parallel to the bottom surface of the frame rail.

14 . The suspension assembly of claim 11 , wherein each of the four pivot joints on the lower control arm extend outwardly from a cross member.

15 . The suspension assembly of claim 10 , wherein the spring is coupled to the knuckle at a location that is between an interface between the lower control arm and the knuckle and an interface between the upper control link and the knuckle.

16 . An electrified vehicle comprising:

a chassis having a frame rail;

a battery supported on the chassis; and

a suspension assembly including:

a knuckle;

a subframe;

an H-arm coupled between the knuckle and the subframe;

a control link arranged above the H-arm and coupled between the knuckle and the subframe; and

a spring coupled to a bottom surface of the frame rail and directly coupled to the knuckle;

wherein the H-arm and the control link are both arranged below the bottom surface of the frame rail.

17 . The electrified vehicle of claim 16 , wherein an entirety of the H-arm is arranged below a plane that extends parallel to the bottom surface of the frame rail.

18 . The electrified vehicle of claim 16 , wherein the spring is coupled to the knuckle at a location that is between an interface between the H-arm and the knuckle and an interface between the control link and the knuckle.