Die-Cast Vehicle Support Member Load Distribution
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Solution Overview
Problem
Existing vehicle support members, such as those with radially extending ribs, complicate the structure and do not effectively distribute loads from devices in the power unit room, leading to potential instability and stress concentration.
Innovation Solution
A die-cast vehicle support member with a fixing portion and a fixing-portion connecting rib that connects to the outer peripheral wall, allowing load distribution without radially extending ribs, and featuring a design that simplifies the structure while absorbing vibration and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If radially extending ribs are provided around the fixing portion to distribute loads, then load distribution is improved, but structural complexity increases
Solution Approach 1:
The patent extracts the load distribution function from the traditional radially extending ribs and relocates it to the fixing-portion connecting rib that connects to the outer peripheral wall. This separates the support function from the complex radial rib structure, achieving load distribution without increasing overall structural complexity.
Solution Approach 2:
The outer peripheral wall acts as an intermediary element that mediates load distribution. Instead of using multiple radial ribs, the patent uses a single fixing-portion connecting rib that transmits loads to the outer peripheral wall, which then distributes the loads along its structure, simplifying the overall design.
2Device complexity
If a simple structure without radially extending ribs is used, then structural complexity is reduced, but load distribution capability deteriorates
Solution Approach 1:
The patent transitions from a two-dimensional radial rib structure to a three-dimensional load path that utilizes the outer peripheral wall as an additional dimension for load distribution. The fixing-portion connecting rib connects to the outer peripheral wall, creating a spatial load distribution system that achieves stability with simpler structure.
3Strength
If steel sheet material is used for the support member, then structural strength is maintained, but vibration and noise absorption deteriorates
Solution Approach 1:
The patent changes the material parameter from steel sheet to die-cast material, which alters the physical properties of the support member. The die-cast material provides both the required structural strength and improved vibration and noise absorption characteristics, resolving the contradiction between strength and harmful factor reduction.
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 solution provides stable support for devices in the power unit room, reduces structural complexity, and suppresses stress concentration, while maintaining load distribution efficiency and noise absorption.
Implementation Method 1
the vehicle support member is die-cast, and can absorb vibration and noise caused by the device arranged in the power unit room as compared to a vehicle support member made of a steel sheet
Implementation Method 2
the vehicle support member is die-cast, and can absorb vibration and noise caused by the device arranged in the power unit room as compared to a vehicle support member made of a steel sheet
Data Source
AI summary
A vehicle support member that is die-cast includes a fixing portion configured to fix a device arranged in a power unit room, and a fixing-portion connecting rib connecting the fixing portion and an outer peripheral wall supported on a pair of front side members constituting a vehicle body and located on an outer side of the power unit room in a width direction of a vehicle.