Motor vehicle rear wheel suspension system

Patent metadata

Field	Value
Publication number	US-11084347-B2
Application number	US-201916380202-A
Country	US
Kind code	B2
Filing date	Apr 10, 2019
Priority date	Apr 11, 2018
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A motor vehicle independent rear-wheel suspension system including a left-hand and a right-hand transverse link, each articulated at an inner end on a chassis of the motor vehicle and fixedly connected at an outer end to a wheel carrier. The suspension system having a left-hand and a right-hand trailing arm unit. Each trailing arm unit articulated a front end on the chassis of the motor vehicle and at a rear end on a wheel carrier. Open installation space is formed between the trailing arm units and the transverse links for at least a partial accommodation of an electrical drive train.

First claim

What is claimed is:

1. An independent rear-wheel suspension system of a motor vehicle comprising:
a left-hand trailing arm unit and a right-hand trailing arm unit, the left-hand trailing arm unit having first and second left-hand trailing arms, the right-hand trailing arm unit having first and second right-hand trailing arms;
a left-hand transverse link and a right-hand transverse link, the left-hand transverse link having an inner end, an elastomeric bearing at the inner end, the elastomeric bearing having a swivel axis extending parallel a direction of vehicle travel, and an outer end, the outer end connected to a left-hand wheel carrier and the right-hand transverse link having an inner end, an elastomeric bearing at the inner end, the elastomeric bearing having a swivel axis extending parallel a direction of vehicle travel, and an outer end, the outer end connected to a right-hand wheel carrier;
the first and second left-hand trailing arms of the left-hand trailing arm unit each articulated at a front end on a chassis of the motor vehicle and at a rear end on the left-hand wheel carrier and the first and second right-hand trailing arms of the right-hand trailing arm unit each articulated at a front end on the chassis of the motor vehicle and at a rear end on the right-hand wheel carrier;
the articulated front ends of the first and second left-hand trailing arms occupy the same space in a plan view and are separated in a vertical direction;
the articulated front ends of the first and second right-hand trailing arms occupy the same space in a plan view and are separated in the vertical direction; and
an open installation space formed between the left-hand trailing arm unit and right-hand trailing arm unit and in front of the left-hand transverse link and right-hand transverse link; and
the left-hand transverse link having a curvature between the inner end and the outer end wherein the left-hand transverse link has a concave side and the right-hand transverse link having a curvature between the inner end and the outer end, wherein the right-hand transverse link has a concave side; and
the concave side of the left-hand transverse link facing the concave side of the right-hand transverse link.

2. The independent rear-wheel suspension system of claim 1 including elastomer bearing bushes at the front ends and the rear ends of the first and second left-hand trailing arms and the first and second right-hand trailing arms, each elastomer bearing bush having a swivel axis, each swivel axis oriented parallel to one another and perpendicular to the first and second left-hand trailing arms and the first and second right-hand trailing arms.

3. The independent rear-wheel suspension system of claim 1 wherein first and second left-hand trailing arms and first and second right-hand trailing arms extend horizontally in a static load state.

4. The independent rear-wheel suspension system of claim 1 including the left-hand transverse link having an inner end and an elastomer bearing bush at the inner end of the left-hand transverse link; and
the right-hand transverse link having an inner end and an elastomer bearing bush at the inner end of the right-hand transverse link.

5. The independent rear-wheel suspension system of claim 4 wherein the elastomer bearing bush of the left-hand transverse link and the elastomer bearing bush of the right-hand transverse link each have a swivel axis, each swivel axis extending parallel to a direction of travel; and
the elastomer bearing bush of the left-hand transverse link positioned adjacent a connection between the outer end of the right-hand transverse link and the right-hand wheel carrier and the elastomer bearing bush of the right-hand transverse link positioned adjacent a connection between the outer end of the left-hand transverse link and the left-hand wheel carrier.

6. The independent rear-wheel suspension system of claim 1 including the left-hand wheel carrier and left-hand transverse link being an integral unit and the right-hand wheel carrier and right-hand transverse link being an integral unit.

7. The independent rear-wheel suspension system of claim 6 including a left-side spring-and-shock absorber unit connected to the left-hand wheel carrier and left-hand transverse link integral unit and a right-side spring-and-shock absorber unit connected to the right-hand wheel carrier and right-hand transverse link integral unit.

8. A motor vehicle comprising:
an electrical drive train including, an electrical power source;
a left-hand trailing arm unit and a right-hand trailing arm unit, the left-hand trailing arm unit having first and second left-hand trailing arms, the right-hand trailing arm unit having first and second right-hand trailing arms;
a left-hand transverse link and a right-hand transverse link, the left-hand transverse link having an inner end, an elastomeric bearing at the inner end, the elastomeric bearing having a swivel axis extending parallel a direction of the motor vehicle travel, and an outer end, the outer end connected to a left-hand wheel carrier and the right-hand transverse link having an inner end, an elastomeric bearing at the inner end, the elastomeric bearing having a swivel axis extending parallel a direction of vehicle travel, and an outer end, the outer end connected to a right-hand wheel carrier;
the first and second left-hand trailing arms of the left-hand trailing arm unit each articulated at a front end on the chassis of the motor vehicle and at a rear end on the left-hand wheel carrier and the first and second right-hand trailing arms of the right-hand trailing arm unit each articulated at a front end on the chassis of the motor vehicle and at a rear end on the right-hand wheel carrier, first and second left-hand trailing arms and first and second right-hand trailing arms extend horizontally in a static load state;
the articulated front ends of the first and second left-hand trailing arms occupy the same space in a plan view and are separated in a vertical direction;
the articulated front ends of the first and second right-hand trailing arms occupy the same space in a plan view and are separated in the vertical direction; and
an open installation space formed between the left-hand trailing arm unit and right-hand trailing arm unit and in front of the left-hand transverse link and right-hand transverse link; and
a portion of the electrical drive train in the open installation space.

9. An independent rear-wheel suspension system of a motor vehicle comprising:
a left-hand trailing arm unit and a right-hand trailing arm unit, the left-hand trailing arm unit having first and second left-hand trailing arms, the right-hand trailing arm unit having first and second right-hand trailing arms;
a left-hand transverse link and a right-hand transverse link, the left-hand transverse link including an inner end and an outer end, the outer end of the left-hand transverse link connected to a left-hand wheel carrier and the right-hand transverse link including an inner end and an outer end, the outer end of the right-hand transverse link connected to a right-hand wheel carrier;
the inner end of the left-hand transverse link having an elastomer bearing bush and the inner end of the right-hand transverse link having an elastomer bearing bush wherein the elastomer bearing bush of the left-hand transverse link and the elastomer bearing bush of the right-hand transverse link each have a swivel axis, each swivel axis extending parallel to a direction of travel; and
the elastomer bearing bush of the left-hand transverse link positioned adjacent a connection between the outer end of the right-hand transverse link and the right-hand wheel carrier and the elastomer bearing bush of the

Assignees

• Ford Global Tech Llc

Inventors

• Wolf-Monheim Friedrich Peter

Classifications

• B60G2204/148

  on the unsprung part of the vehicle, e.g. wheel knuckle or rigid axle · CPC title

• B60G2200/4622

  Alignment adjustment · CPC title

• B60G7/008

  Attaching arms to unsprung part of vehicle (B60G7/005, B60G7/006 take precedence) · CPC title

• B60G2200/143

  with lateral arms crossing each other, i.e. X formation as seen along the longitudinal axis · CPC title

• B60G2206/1112

  Manually, for alignment purposes · CPC title