Actuating Unit Arrangement for Vehicle Wheel Suspension Steering and Roll Stabilization
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Solution Overview
Problem
Existing arrangements of actuating units for steering and roll stabilization in motor vehicle wheel suspensions face challenges in optimal connection, weight distribution, and spatial constraints, particularly with split anti-roll bars and electrically operated systems.
Innovation Solution
The actuating units are arranged with the steering control unit on one cross member and the roll stabilization control unit on another, allowing for spatial decoupling and favorable force distribution, with the option to swap positions based on wheel configuration for enhanced protection and space efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If both actuating units are arranged adjacent to each other on the same cross member, then the arrangement is compact, but the connection to wheel guide elements becomes problematic and spatial constraints increase
Solution Approach 1:
The invention divides the axle support into two separate cross members, placing the steering control unit on one cross member and the roll stabilization control unit on the other. This segmentation spatially separates the two control units, eliminating interference in their respective connection paths to wheel guide elements while maintaining a compact overall arrangement within the axle support structure.
2Reliability
If actuating units are positioned to ensure adequate connection to wheel guide elements, then connection reliability improves, but weight distribution becomes uneven
Solution Approach 1:
The invention employs asymmetric positioning of the two control units on different cross members, allowing each unit to connect to wheel guide elements along optimized paths. The steering control unit connects to steerable wheel carriers while the roll stabilization control unit connects to lower links, creating asymmetric but optimized connection geometries that balance weight distribution and ensure reliable connections.
3Ease of manufacture
If tie rods and anti-roll bars are arranged with sufficient clearance, then ease of assembly improves, but the required space increases
Solution Approach 1:
By distributing control units across two different cross members (adding a longitudinal dimension to the arrangement), the invention creates sufficient clearance for tie rods and anti-roll bars in the transverse direction while maintaining compact overall volume. This dimensional distribution allows easy assembly of connection elements without requiring excessive space.
Data Source
AI summary
The arrangement has a steering gear adjusting unit (40) fixed with a tie rod (46) at one of transverse carriers (36). A wheel suspension unit (10) is hinged at an axle carrier (18) via lower individual control levers (14, 16) i.e. transverse control levers. A dynamic stability control adjusting unit (52) is fixed with a transverse stabilizer (58) at the other transverse carrier (34), where the transverse stabilizer acts on one of the individual control levers (14). The adjusting units are formed by electric motors (42, 54) that drive an adjusting gear (56) e.g. harmonic drive gear. USE : Adjusting unit arrangement for steering and dynamic stability control of a wheel of a motor vehicle. ADVANTAGE : The steering gear and dynamic stability control adjusting units are fixed with the tie rod and the transverse stabilizer at the transverse carriers, respectively, thus achieving better weight distribution at the vehicle and spatial decoupling connection of the adjusting unit arrangement at the wheel guiding elements with easy access of the tie rod and the transverse stabilizers, and mounting the adjusting unit arrangement in a friendly manner. The arrangement achieves partitioned and relative uniform force- or moment support at the axle carrier and permits joining of the tie rod and the transverse stabilizers at the wheel carrier and the transverse control levers in a better manner. DESCRIPTION OF DRAWINGS : The drawing shows a plan view of a wheel suspension unit for a rear wheel of a motor vehicle with an adjusting unit fixed at an axle carrier for steering and dynamic stability control of the wheel. 10 : Wheel suspension unit 14, 16 : Individual control levers 18 : Axle carrier 24 : Wheel carrier 34, 36 : Transverse carriers 40 : Steering gear adjusting unit 42, 54 : Electric motors 46 : Tie rod 52 : Dynamic stability control adjusting unit 56 : Adjusting gear 58 : Transverse stabilizer.