Integrated Drive Unit Housing for Vehicle Vibration Suppression
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Solution Overview
Problem
Existing drive devices for vehicles face issues with increased vibration and resonance due to individual vibrations of separate housings for the electrical generator and drive, which are not effectively suppressed by existing coupling methods.
Innovation Solution
A drive unit design where the first electric motor, deceleration mechanism, second electric motor, and acceleration mechanism are housed in a single housing, with motors arranged in a front-rear direction and connected to an internal combustion engine in a left-right direction, and the rotation shafts positioned to minimize vibration through balanced weight distribution and parallel alignment with the crankshaft axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the electrical generator and drive are housed in separate housings, then each component can be independently designed and manufactured, but the vibration increases due to bending and twisting of the separate housings
Solution Approach 1:
The patent combines the electrical generator housing and drive housing into a single integrated housing structure. This merging eliminates the separate vibrating housings and their individual bending and twisting modes, thereby reducing vibration while maintaining manufacturability through modular assembly within the unified housing.
2Adaptability or versatility
If the electrical generator and drive are housed in separate housings, then component independence is maintained, but resonance occurs due to two vibration sources approaching each other
Solution Approach 1:
By integrating the electrical generator and drive into a single housing, the patent reduces the system from two independent vibration sources to one unified structure. This eliminates the resonance problem caused by two separate housings vibrating and interacting, while the internal modular design preserves component independence for maintenance and assembly.
3Ease of manufacture
If only a part of the first housing and second housing are coupled by a coupling member, then assembly is simplified, but the effect of suppressing vibration is limited
Solution Approach 1:
The patent implements a full integration of the electrical generator and drive housings into a single unified housing structure, rather than partially coupling separate housings. This complete merging provides comprehensive vibration suppression throughout the entire assembly, while the internal modular design maintains ease of assembly and disassembly for maintenance purposes.
Data Source
AI summary
A drive unit includes: an electric unit including a first electric motor for driving, a deceleration mechanism configured to transmit a rotation torque of the first electric motor to a drive wheel, a second electric motor configured to be driven by an internal combustion engine to generate electric power, and an acceleration mechanism configured to transmit a rotation torque of the internal combustion engine to the second electric motor. The first electric motor, the deceleration mechanism, the second electric motor, and the acceleration mechanism are housed in one housing.