Vehicle Door Handle Mounting Structure for Side-Impact Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vehicle door assemblies face challenges in effectively distributing and absorbing impact forces during side impact events, which can lead to deformation and movement of moving parts, compromising safety and structural integrity.
Innovation Solution
The vehicle door assembly incorporates a door panel, handle base bracket, metallic reinforcement bracket, and vibration absorbing member to distribute impact forces to predetermined areas, ensuring the handle assembly is partially covered and reducing the likelihood of movement during a side impact event.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional door handle assembly is used without additional reinforcement structures, then the device complexity is low, but the strength and ability to distribute impact forces during side impact events is insufficient
Solution Approach 1:
The door handle assembly is divided into multiple functional components: a door handle bracket mounted to the door panel, a reinforcement bracket with separate mounting sections, and a vibration absorbing member. This segmentation allows each component to perform its specific function while collectively providing impact force distribution without excessive overall complexity
Solution Approach 2:
The assembly combines different material properties by using a metallic reinforcement bracket for structural strength, a vibration absorbing member (likely polymer or foam material) for energy dissipation, and a door handle bracket for mounting. This composite approach enables both high strength for impact resistance and controlled vibration absorption
2Stability of the object's composition
If the door handle assembly is made more rigid to prevent movement during impact, then the stability improves, but the ability to absorb vibration and impact energy decreases
Solution Approach 1:
The vibration absorbing member is designed to deform and dissipate energy during impact events, providing dynamic response rather than rigid resistance. This allows the assembly to adapt to impact forces, maintaining stability while absorbing vibration energy through controlled deformation of the damping material
Solution Approach 2:
The vibration absorbing member is pre-installed between the door handle bracket and reinforcement bracket to provide cushioning before impact occurs. This beforehand cushioning ensures that when side impact events occur, the energy is already absorbed by the pre-positioned damping material, protecting the handle assembly from excessive forces
Data Source
AI summary
A handle base bracket has a first handle receiving section and a fastener opening that extends through the first handle receiving section. In a fully assembled state the outboard surface of the handle base bracket overlays a portion of an inboard surface of a door panel. A first fastener member extends through the first handle opening and into the fastener opening. A head portion overlays a portion of the outboard surface of the door panel adjacent to the first handle opening. A metallic bracket has a main section fixedly attached to the handle base bracket. First and second side flanges of the metallic bracket extend toward the inboard surface of the door panel. An operation handle has a grip portion outboard of the door panel and a protrusion extending into the first handle receiving section of the handle base bracket.