Vehicle Side-Sill Shock Absorption Structure With Reinforced Corrugations
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Solution Overview
Problem
Existing corrugated-plate-shaped impact absorbing members in vehicle side sills fail to effectively absorb energy during side collisions due to oblique input of side impact loads, causing ridge line deformation and insufficient energy absorption.
Innovation Solution
The impact absorbing member is designed with a corrugated-plate shape oriented in the vehicle front-and-rear direction, featuring reinforcing shapes such as beads and curved edges to prevent or suppress falling deformation of ridge lines, ensuring energy absorption through axial crush.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the corrugated-plate shape is oriented with ridge lines in the vehicle width direction, then the strength against impact load is reinforced, but the ridge lines fall during side collision and energy absorption becomes insufficient
Solution Approach 1:
The patent changes the orientation parameter of the corrugated-plate shape from having ridge lines in the vehicle width direction to having ridge lines in the vehicle front-and-rear direction. This parameter change resolves the contradiction by reorienting the structure to better withstand oblique impact loads from side collisions, preventing ridge line failure while maintaining energy absorption capability through axial crush deformation.
2Reliability
If the corrugated-plate shape is oriented with ridge lines in the vehicle front-and-rear direction, then the energy absorption is improved, but the ridge lines fall during side collision
Solution Approach 1:
The patent segments the corrugated-plate structure into multiple ridges and valleys arranged in the vehicle front-and-rear direction. This segmentation creates multiple discrete energy absorption zones that can deform independently during impact, allowing the structure to maintain overall strength while absorbing energy through controlled localized deformation of each segment.
3Stability of the object's composition
If a reinforcing shape is added between ridge lines, then the falling deformation is suppressed, but the device complexity increases
Solution Approach 1:
The patent merges the reinforcing function with the existing corrugated-plate structure by integrating reinforcement elements directly into the plate design. The reinforcing shapes are combined with the corrugated geometry to create a unified structure that provides both energy absorption and ridge line stability, eliminating the need for separate reinforcement components and reducing overall device complexity.
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 reinforced corrugated-plate shape maintains structural integrity and enhances energy absorption during side collisions, reducing weight and component costs while effectively absorbing impact energy.
Implementation Method 1
the energy absorption due to axial crush deformation of the corrugated-plate shape
Data Source
AI summary
In a vehicle impact absorbing structure, an impact absorbing member (22) is disposed in a side sill formed in a hollow shape in a vehicle front-and-rear direction, as a configuration that absorbs energy during a collision on the side of a vehicle. The impact absorbing member (22) is formed and disposed in a corrugated shape in the vehicle front-and-rear direction. The corrugated-plate shape is provided, between ridge lines (24a) and (24b) and between ridge lines (24c) and (24d), the ridge lines (24a), (24b), (24c), and (24d) being arranged in the vehicle front-and-rear direction, with a reinforcing shape (a first bead (36)) that prevents or suppresses falling deformation of the ridge lines (24a), (24b), (24c), and (24d) in the vehicle front-and-rear direction.