Electric Drive Motor Integrated Link for Wheel Suspension
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Solution Overview
Problem
Existing wheel suspension designs for motor vehicles face challenges in optimizing the packaging of electric drive motors while maintaining driving characteristics.
Innovation Solution
The electric drive motor is rigidly connected to the link via a force-fitting connection, and in some embodiments, is integrated within the link, forming a single structural unit made of the same material, which reduces the moment of inertia and allows for improved cooling and a compact, rigid design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the electric drive motor is rigidly connected to the link, then the driving dynamics are improved due to rigid design, but the device complexity increases
Solution Approach 1:
The electric drive motor is rigidly connected to the link, merging two separate components into a unified rigid assembly. This eliminates relative movement between the motor and link, ensuring stable driving dynamics while maintaining manageable device complexity through direct integration.
2Temperature
If the electric drive motor is arranged in the link forming an integral unit, then the cooling is improved due to greatly enlarged surface, but the manufacturing complexity increases
Solution Approach 1:
The housing of the electric drive motor and the link are formed as an integral unit in one piece, creating a unified structure with greatly enlarged cooling surface area. This integration improves thermal dissipation while the one-piece construction simplifies manufacturing compared to assembling multiple separate components.
3Weight of moving object
If the electric drive motor is positioned close to the pivot axis, then the moment of inertia is reduced, but the packaging space constraints increase
Solution Approach 1:
The electric drive motor is positioned with its center of gravity close to the pivot axis, optimizing the moment of inertia for dynamic performance. This strategic placement near the rotation point minimizes rotational inertia while the motor's dimensions are configured to fit within the available packaging space of the link structure.
4Weight of moving object
If the link and electric drive motor are formed from different materials, then the lightweight construction is achieved, but the manufacturing precision requirements increase
Solution Approach 1:
The link and electric drive motor housing are formed from different materials, creating a composite structure that optimizes weight. This material differentiation allows selection of lightweight materials for non-critical components while maintaining structural integrity, with manufacturing precision controlled through the integral unit formation process.
5Stability of the object's composition
If the wheel carrier is designed as an integral component of the link, then the driving dynamics are improved due to rigid design, but the device complexity increases
Solution Approach 1:
The wheel carrier is designed as an integral component directly formed on the link, merging multiple structural elements into a unified rigid assembly. This integration eliminates joints and connections between the wheel carrier and link, ensuring superior driving dynamics through enhanced structural rigidity while reducing the number of separate components.
Data Source
AI summary
A wheel suspension for a wheel of an axle of a motor vehicle. A wheel hub, which is rotatably mounted in a wheel carrier, can be driven by an electric drive engine. The wheel carrier is rotatably mounted by at least one link about a pivot axis on the vehicle body. The electric drive engine and the link are rigidly connected to one another.