# US 9,434,416 B2 · Subframe for a motor vehicle

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- Number: US 9,434,416 B2
- Document ID: US9434416B2
- Status: Granted
- Kind: B2
- Application number: 14/510,676
- Filed: 2014-10-09
- Published: 2015-04-16
- Granted: 2016-09-06
- Earliest claimed: 2013-10-10
- Assignees: Audi AG
- Applicants: Audi AG
- Inventors: Christian Isakiewitsch; Sebastian Scheiblecker
- Web page: https://patentgrep.com/patent/US9434416B2

## CPC

- B62D 21/11: with resilient means for suspension {, e.g. of wheels or engine; sub-frames for mounting engine or suspensions}
- B60K 5/12: Arrangement of engine supports
- B60K 5/1283: {Adjustable supports, e.g. the mounting or the characteristics being adjustable}
- B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M)
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES

## Abstract

A subframe for a motor vehicle includes at least one transverse structure oriented in a transverse direction of the vehicle, a first and a second longitudinal member oriented in a longitudinal direction of the vehicle and connected to the at least one transverse structure by respective first and second cast joints respectively arranged between the first longitudinal member and the at least one transverse structure and the second longitudinal member and the at least one transverse structure, the first and second cast joints each having bearing connection points for fastening an engine bearing. The subframe also includes connection parts, one of which is provided for each of the first and second cast joints, the connection parts each having at least one other bearing connection point for fastening the engine bearing, and multiple bearing sites via which the connection parts are fastenable on the at least one transverse structure and on the bearing connection points of the first and second cast joints.

## Claims

### Claim 1

A subframe for a motor vehicle, comprising:
at least one transverse structure oriented in a transverse direction of the vehicle;
a first and a second longitudinal member oriented in a longitudinal direction of the vehicle and connected to the at least one transverse structure by respective first and second cast joints respectively arranged between the first longitudinal member and the at least one transverse structure and the second longitudinal member and the at least one transverse structure, said first and second cast joints each having bearing connection points for fastening an engine bearing; and
separate connection parts, one of said connection parts provided for each of the first and second cast joints, said connection parts each having at least one other bearing connection point for fastening the engine bearing, and multiple bearing sites via which the connection parts are fastenable on the at least one transverse structure and on the bearing connection points of the first and second cast joints, said connection parts being spaced apart in vertical direction from the at least one transverse structure so that a passage is formed between the at least one transverse structure and each of the connection parts.

### Claim 2 (depends on 1)

The subframe of claim 1, wherein the at least one transverse structure comprises a transverse member and a shear field, and the connection parts each have two said bearing sites on a side facing the at least one transverse structure, said connection parts being fastened with the transverse member and the shear field via the bearing sites.

### Claim 3 (depends on 2)

The subframe of claim 2, wherein the two bearing sites are arranged and the connection parts are configured so that a free corridor is formed in the transverse direction of the motor vehicle.

### Claim 4 (depends on 1)

The subframe of claim 1, wherein the connection parts are connected with the cast joints and the transverse structure by means of threaded connections.

### Claim 5 (depends on 1)

The subframe of claim 1, wherein the connection parts are configured as cast parts.