Window Jamb Reinforcement for Controlled Side-Impact Deformation
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Solution Overview
Problem
Existing vehicle bay pillars experience uncontrolled deformations during side impacts, leading to potential creases and excessive intrusion into the passenger compartment, particularly in electric vehicles with increased mass and structural reinforcement needs.
Innovation Solution
A pillar reinforcement designed with a stamped sheet forming a window pillar, featuring a reinforcement zone with controlled deformation, including inclined edges and a groove to manage and contain deformations, preventing their propagation into the rebate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the B-pillar is fixed to a reinforcement, then the pillar structure is strengthened, but a break in inertia is created causing creases and potential pillar breaking during side impact
Solution Approach 1:
The reinforcement is segmented into distinct zones: a mounting zone for attachment and a reinforcement zone with controlled deformation capability. This segmentation allows the structure to manage impact forces through controlled deformation in the reinforcement zone while maintaining structural integrity elsewhere.
Solution Approach 2:
The reinforcement zone is given specific local properties through stamped sections and inclined edges that enable controlled deformation. This local quality modification allows the reinforcement to absorb impact energy through predictable deformation patterns rather than catastrophic failure.
2Strength
If additional reinforcing components are added to reinforce the pillars, then the pillar strength is improved, but the vehicle weight and production costs increase
Solution Approach 1:
The reinforcement functionality is merged into the existing reinforcement piece through integrated stamped sections and inclined edges, eliminating the need for separate reinforcing components. This combines multiple functions into a single element, reducing part count and weight while maintaining reinforcement effectiveness.
Solution Approach 2:
The reinforcement piece serves multiple functions: structural attachment at the mounting zone and controlled deformation energy absorption at the reinforcement zone. This multi-functionality replaces what would traditionally require multiple separate components, reducing overall weight.
3Reliability
If the reinforcement zone contains deformation during lateral impact, then the passenger compartment integrity is protected, but the deformation control mechanism increases structural complexity
Solution Approach 1:
The deformation characteristics are controlled by modifying geometric parameters of the reinforcement zone, specifically the inclined edges and stamped sections. These parameter changes enable predictable deformation behavior during impact without requiring complex active control systems or additional components.
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 reinforcement allows for controlled deformation of the bay pillar without additional components, ensuring passenger compartment integrity and protection during side impacts.
Implementation Method 1
the reinforcement zone being designed to contain deformation of the reinforcement in the reinforcement zone during a lateral impact suffered by the vehicle
Data Source
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AI summary
The invention relates to a jamb reinforcement (1) for a window jamb of a crate, the reinforcement (1) being made of stamped sheet metal extending along a longitudinal line (LL) and having a landing zone (5) for a mid-foot, the reinforcement (1) having a first surface (6) delimited by a first (7) and a second (8) squares, delimiting the reinforcement (1) along the longitudinal line (LL) between the first surface (6) and respectively a first (9) and a second (10) extensions, the reinforcement (1) having a reinforcement zone (11) distant from the landing zone (5) and delimited by a first stamped piece (12), disposed in the first extension (9) and extending along the longitudinal line (LL), and a second stamped piece (13) disposed in the second extension (10) inclined with respect to the longitudinal line (LL), the reinforcement zone (11) being designed to contain a deformation within the reinforcement zone (11).