Rear axle of a two-track vehicle

Patent metadata

Field	Value
Publication number	US-9446642-B2
Application number	US-201514826294-A
Country	US
Kind code	B2
Filing date	Aug 14, 2015
Priority date	Feb 15, 2013
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

A rear axle of a two-track vehicle, including three control arms articulated to a wheel carrier and extending substantially in a transverse direction of the vehicle, and a trailing arm rigidly connected to the wheel carrier and having adequate flexibility in the transverse direction of the vehicle due to its structure or its mounting on the vehicle body. A support spring proportionately supporting the vehicle body with respect to the wheel and a vibration damper connected effectively in parallel with the supporting spring are supported on the wheel carrier without the intermediate arrangement of a control arm articulated to the wheel carrier. The support spring is supported in front of the wheel center and below the wheel center, as viewed in the direction of travel, on a cantilever protruding from the wheel carrier toward the vehicle center plane and the control arm articulated to the wheel carrier above the center point of the driven wheel in the vertical direction is connected to the wheel carrier behind the wheel center as viewed in the direction of travel. The control arm articulated to the wheel carrier in front of the wheel center as viewed in the direction of travel is connected to the wheel carrier below the wheel center in the vertical direction. The control arm arranged farthest to the rear as viewed in the direction of travel is connected to a steering actuator for the wheel by its end facing away from the wheel carrier.

First claim

What is claimed is:

1. A rear axle of a two-track vehicle having a vehicle body, comprising:
a wheel carrier;
three control arms connected in an articulated manner to the wheel carrier and extending substantially in a vehicle transverse direction;
a trailing arm connected rigidly to the wheel carrier;
a support spring configured to proportionally support the vehicle body with respect to a wheel mounted rotatably on the wheel carrier;
a vibration damper connected to act in parallel with the support spring;
a cantilever extending from the wheel carrier toward a vehicle center plane, wherein
the support spring and the vibration damper are supported below a wheel center on the cantilever without a link, which is connected in an articulated manner to the wheel carrier, being connected in between,
a first of the three control arms articulated on the wheel carrier above the wheel center in a vertical direction is connected to the wheel carrier behind the wheel center viewed in a driving direction,
the support spring is supported in front of the wheel center on the cantilever as viewed in the driving direction such that the wheel is drivable via a drive shaft extending in the vehicle transverse direction,
a second of the three control arms articulated on the wheel carrier in front of the wheel center as viewed in the driving direction is connected to the wheel carrier below the wheel carrier in the vertical direction,
a third of the three controls arm arranged furthest to a rear as viewed in the driving direction is connected at an end facing away from the wheel carrier to a steering actuator for the wheel,
the trailing arm is fastened to the cantilever, and
a receptacle bracket for a lower bearing of the vibration damper is formed as an extension of the trailing arm that would pass through the cantilever.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Stenzenberger Alfred
• Kettenberger Johann

Classifications

• B60G7/006

  Attaching arms to sprung or unsprung part of vehicle, characterised by comprising attachment means controlled by an external actuator, e.g. a fluid or electrical motor (B62D7/146 takes precedence) · CPC title

• B60G2200/4622

  Alignment adjustment · CPC title

• B60G2204/62

  Adjustable continuously, e.g. during driving · CPC title

• B62D7/146

  characterised by comprising means for steering by acting on the suspension system, e.g. on the mountings of the suspension arms · CPC title

• B60G2204/129

  Damper mount on wheel suspension or knuckle · CPC title