Integrated Vehicle Corner Module for In-Wheel Drive and Steering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle systems lack an integrated solution for driving, braking, steering, and suspension that is efficient, lightweight, and reduces energy loss, particularly in in-wheel motor vehicles.
Innovation Solution
A corner module apparatus that integrates a driving unit, braking unit, suspension unit, and steering unit, featuring an in-wheel motor, shock absorber modules, and a steering system with a steering axis inclined to adjust the steering angle of the wheel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If an in-wheel motor system is used to eliminate intermediate power transfer units, then weight reduction and energy loss reduction are achieved, but the integration complexity of driving, braking, steering, and suspension systems increases
Solution Approach 1:
The patent combines driving, braking, steering, and suspension systems into a single integrated corner module apparatus. The in-wheel motor (driving unit) is directly coupled to the wheel, while the braking unit, suspension unit, and steering unit are all interconnected within the same modular structure, eliminating the need for separate intermediate power transfer units and reducing overall system complexity despite the integration of multiple functions.
Solution Approach 2:
The corner module apparatus is designed as a multi-functional unit where a single integrated structure performs multiple functions: the driving unit provides propulsion, the braking unit enables deceleration, the suspension unit handles shock absorption, and the steering unit controls wheel direction. This universal design allows one modular component to replace what would traditionally require multiple separate systems.
2Manufacturing precision
If a steering axis is inclined to adjust steering angle, then steering precision and vehicle stability are improved, but the structural complexity of the steering unit increases
Solution Approach 1:
The steering unit employs an inclined steering axis that is not perpendicular to the wheel plane but angled at a specific inclination angle. This asymmetric geometric configuration improves steering precision and vehicle stability by better aligning the steering force with the wheel's rotation axis, while the inclination is carefully designed to balance performance gains with manufacturing feasibility.
3Reliability
If shock absorber modules are integrated into the suspension unit, then suspension performance and shock absorption capability are improved, but the device complexity increases
Solution Approach 1:
The suspension unit integrates shock absorber modules directly into its structure, combining the shock absorption function with the existing suspension arm and knuckle assembly. This merging of functions allows the suspension system to handle both wheel positioning and shock absorption within a single integrated unit, improving reliability without requiring entirely separate shock absorption mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The corner module apparatus enhances vehicle performance by providing efficient power delivery, improved suspension and braking capabilities, and adjustable steering, leading to reduced energy loss and a more efficient driving experience.
Implementation Method 1
an elastic body provided between the cylinder and the rod and configured to elastically support the rod with respect to the cylinder
Implementation Method 2
a suspension unit, connected to the driving unit, configured to absorb shock transferred from a road surface to the wheel
Implementation Method 3
a braking unit configured to interfere with rotation of the wheel to generate braking power
Data Source
AI summary
Disclosed is a corner module apparatus for a vehicle. The corner module includes a driving unit that provides drive power to a wheel of the vehicle, a braking unit that interferes with rotation of the wheel to generate braking power, and a suspension unit connected to the driving unit. The suspension unit absorbs shock transferred from a road surface. The corner module also includes a steering unit connected to the suspension unit and rotated about a steering axis inclined with respect to the wheel. The steering unit adjusts a steering angle of the wheel.