Rear EV Drive Structure for Steering Clearance and Wheel Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric vehicle drive systems mounted at the rear of the vehicle face challenges in securing interior space, preventing interference with rear-wheel steering systems, and ensuring reliable support for rear wheels to maintain handling performance.
Innovation Solution
The electric vehicle structure incorporates a drive system with a motor and differential having parallel, spaced rotary shafts, supported by lateral members forming a triangular configuration, and integrates an inverter with the motor and differential to conserve space, while a rear-wheel steering system is positioned between lateral members to prevent interference and enhance support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the drive system is mounted at the rear of the vehicle to implement rear-wheel drive, then interior space is conserved, but interference with rear-wheel steering system occurs
Solution Approach 1:
The patent positions the drive system components in three-dimensional space by placing the motor above the rear axle and the differential behind the motor, utilizing vertical and longitudinal dimensions to arrange components around the rear-wheel steering mechanism without interfering with its operation
Solution Approach 2:
The drive system is divided into separate functional modules (motor, differential, inverter) that can be independently positioned and mounted to different structural members, allowing flexible spatial arrangement to avoid interference with rear-wheel steering while conserving interior space
2Ease of operation
If the drive system is mounted at the rear of the vehicle, then rear-wheel drive is implemented, but reliable support for rear wheels is compromised
Solution Approach 1:
The support structure is segmented into multiple lateral members (front lateral member, rear upper lateral member, rear lower lateral member) that are distributed throughout the vehicle structure, providing redundant and reliable support points for the drive system while maintaining rear-wheel drive functionality
Solution Approach 2:
The support structure utilizes three-dimensional spatial distribution with lateral members positioned at different heights and locations, creating a stable triangular configuration that provides reliable mechanical support for the rear-mounted drive system
3Stability of the object's composition
If lateral members are arranged to support the drive system, then structural stability is improved, but interior space is reduced
Solution Approach 1:
The lateral members are arranged in three-dimensional space at different heights and longitudinal positions, forming a stable triangular configuration that provides structural support while utilizing vertical and longitudinal dimensions to minimize encroachment on horizontal interior space
Solution Approach 2:
The support structure is divided into multiple segmented lateral members rather than a single continuous structure, allowing strategic placement of support elements to achieve stability while leaving interior space accessible
Data Source
AI summary
An electric vehicle structure includes a drive system, a front lateral member and a rear upper lateral member. The front and rear lateral members are elongated in a lateral direction of a vehicle and spaced apart from each other in a forward-rearward direction of the vehicle with the drive system interposed therebetween. The vehicle structure further includes a rear lower lateral member elongated in the lateral direction of the vehicle and disposed beneath a motor of the drive system.