# US 9,751,375 B2 · Driven axle of a dual-track vehicle

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- Number: US 9,751,375 B2
- Document ID: US9751375B2
- Status: Granted
- Kind: B2
- Application number: 14/598,470
- Filed: 2015-01-16
- Published: 2015-05-14
- Granted: 2017-09-05
- Earliest claimed: 2012-07-17
- Assignees: Bayerische Motoren Werke Aktiengesellschaft
- Applicants: Bayerische Motoren Werke Aktiengesellschaft
- Inventors: Thomas Muschler; Falk Gerbig
- Web page: https://patentgrep.com/patent/US9751375B2

## CPC

- B60G 21/05: between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G 2200/42: Driven wheels or dead axles
- B60G 2200/422: Driving wheels or live axles
- B60G 2200/462: Toe-in/out
- B60G 2204/82: left and right unit on same axle
- B60G 2204/8302: Mechanical
- B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00})

## Abstract

A driven axle of a dual-track vehicle is provided in which a wheel-guiding control rod on the body of the vehicle or on a cross member connected to the body of the vehicle is stabilized spatially in an slightly elastic fashion via a control rod bearing on the body. The control rod of the right-hand wheel is additionally connected to the control rod of the left-hand wheel via a coupling rod. The coupling rod is exclusively supported on the left-hand and right-hand control rod, preferably in the vicinity of the respective control rod bearing on the body of the vehicle that is disposed in an offset fashion in the longitudinal direction of the vehicle relative to the associated wheel bearing. A mechanical deep-pass filter is provided in the coupling rod and/or in the connection between the coupling rod and a control rod stabilized relative thereto.

## Claims

### Claim 1

A driven axle of a dual-track vehicle, comprising:
a control rod of a right-hand wheel of the dual-track vehicle;
a control rod of a left-hand wheel of the dual-track vehicle;
respective control rod bearings configured to stabilize spatially in a slightly elastic fashion the left-hand and right-hand control rods on a body of the vehicle or on a cross-member connected to the body of the vehicle;
a coupling rod connecting the left-hand and right-hand control rods; and
a mechanical deep-pass filter provided in the coupling rod and/or in a connection between the coupling rod and a respective left-hand and right-hand control rod, wherein
the coupling rod is exclusively supported on the respective left-hand and right-hand control rods in a vicinity of the respective control rod bearings on the body of the vehicle, and
the respective control rod bearings are disposed offset in a longitudinal direction of the vehicle relative to associated left-hand and right-hand wheel bearings; and
drive shafts that lead to the left-hand and right-hand wheel bearings, respectively, the drive shafts introducing rotational vibrations from a crankshaft into the left-hand and right-hand wheels of the vehicle resulting in longitudinal vibrations of the wheels, that are transmitted into the respective control rods and cancelled out in the form of transverse vibrations in the coupling rod.

### Claim 2 (depends on 1)

The axle according to claim 1, wherein the mechanical deep-pass filter is formed by an elastomer element.

### Claim 3 (depends on 2)

The axle according to claim 2, further comprising an approximately play-free ball-and-socket joint provided for each respective connection between the coupling rod and the respective left-hand and right-hand control rod.

### Claim 4 (depends on 3)

The axle according to claim 3, wherein the left-hand and right-hand control rods are lower triangular transverse control rods, the respective connection to the coupling rod being provided in the vicinity of the respective control rod bearing.

### Claim 5 (depends on 1)

The axle according to claim 1, further comprising an approximately play-free ball-and-socket joint provided for each respective connection between the coupling rod and the respective left-hand and right-hand control rod.

### Claim 6 (depends on 1)

The axle according to claim 1, wherein the left-hand and right-hand control rods are lower triangular transverse control rods, the respective connection to the coupling rod being provided in the vicinity of the respective control rod bearing.

### Claim 7 (depends on 1)

The axle according to claim 1, wherein the coupling rod includes a right-hand control rod half and a left-hand control rod half and the mechanical deep-pass filter is interposed between the right-hand control rod half and the left-hand control rod half.

### Claim 8 (depends on 1)

The axle according to claim 1, wherein each connection between the coupling rod and the respective left-hand and right-hand control rods is structured so as to only transfer forces oriented in a longitudinal direction of the coupling rod from each respective control rod into the coupling rod.