Hybrid Generator Mounting Bracket Junction Distribution
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Solution Overview
Problem
The existing power unit structures for hybrid vehicles face difficulties in worker accessibility and junction durability due to cramped spaces and uneven load distribution, leading to increased maintenance workload and potential junction failure.
Innovation Solution
The power unit design features a mounting bracket with a base portion extending along the generator's outer edge, with a higher number of junctions in the rear area, and a generator mount with a cylindrical outer and inner race, anti-vibration rubber, and a support shaft, allowing for improved tool accessibility and load distribution, reducing stress concentration on specific junctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the mount is positioned in a lateral location with respect to the generator, then the structural compactness is improved, but the worker accessibility and tool insertion difficulty worsen
Solution Approach 1:
The patent repositions the generator mount from a lateral position to a longitudinal position (front or rear side) of the generator. This dimensional change in mounting location provides adequate workspace for tool insertion while maintaining structural compactness through optimized spatial arrangement of the power unit components.
2Stability of the object's composition
If the mounting bracket is attached with junctions at multiple points, then the structural stability is improved, but the stress concentration on specific junctions worsens
Solution Approach 1:
The patent strategically distributes junctions at multiple attachment points around the generator's outer edge, with specific emphasis on positioning more junctions in the rear area. This local quality differentiation ensures even load distribution across the mounting bracket, preventing stress concentration on any single junction while maintaining overall structural stability.
3Object-affected harmful factors
If the power unit is attached to the vehicle chassis by mounts, then the vibration isolation is improved, but the assembly complexity and maintenance workload increase
Solution Approach 1:
The patent extracts the vibration isolation function into a dedicated generator mount component that is positioned independently at the front or rear of the generator. This separate mounting structure with anti-vibration elements effectively isolates vibrations while simplifying the overall assembly process and reducing maintenance workload compared to integrated mounting solutions.
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
This design enhances worker accessibility and durability of junctions by distributing vibrations and loads more evenly, reducing maintenance workload and prolonging junction life.
Implementation Method 1
a generator mount between an end portion of the mounting bracket and one of the pair of side members and arranged in front of the imaginary vertical plane with respect to the longitudinal axis of the vehicle... an anti-vibration rubber that encircles the cylindrical inner race
Data Source
AI summary
A hybrid vehicle power unit includes an engine, a generator and a traction motor. A mounting bracket includes a base portion and a plurality of junctions arranged along the outer edge of an end of the generator at a plurality of points spaced at interval to fasten the base portion to the end. Dividing the end by an imaginary vertical plane that includes a rotor axis of the generator into a front area and a rear area with respect to the longitudinal axis of the vehicle, the number of some of the plurality of junctions located in the rear area is larger than the number of the remainder of the plurality of junctions located in the front area. A generator mount between an end portion of the mounting bracket and a side member is arranged in front of the imaginary vertical plane with respect to the longitudinal axis.