Vehicle Door Beam Structure for Lower-Limb Impact Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle door beams deform in a manner that limits the deformed position to the front window sash, potentially causing damage to the passenger's lower limbs during side impacts.
Innovation Solution
A vehicle door beam design featuring a non-fixing part that displaces towards the vehicle inner side upon deformation, alleviating impact on the passenger's thigh by being positioned to correspond with the knee area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the vehicle door beam is disposed with the front end intersecting the front window sash but not the front pillar, then the beam provides reinforcement against lateral impact, but the deformed position is limited by the front window sash position which may cause damage to the passenger's lower limbs
Solution Approach 1:
The inner side member is divided into two distinct segments: a fixing part that is fixed to the beam body and a non-fixing part that is not fixed to the beam body. This segmentation allows the non-fixing part to move independently during deformation, enabling it to displace away from the knee area and reduce the risk of injury to the passenger's lower limbs while maintaining the overall structural strength of the door beam.
2Object-affected harmful factors
If the non-fixing part is disposed at a position in front of the fixing part, then the non-fixing part can displace towards the vehicle inner side upon deformation, but the structural complexity increases
Solution Approach 1:
The inner side member is segmented into a fixing part and a non-fixing part, allowing the non-fixing part to be positioned in front of the fixing part. This simple segmentation enables the non-fixing part to displace independently during deformation, reducing impact on the passenger's thigh without requiring complex mechanisms 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
Prevents damage to the passenger's lower limbs by displacing the non-fixing part away from the beam body towards the inner side, enhancing safety during side impacts.
Implementation Method 1
when the vehicle door beam deforms under side impact, the non-fixing part may be displaced in such a manner that the non-fixing part moves away from the beam body toward the vehicle inner side
Data Source
AI summary
A vehicle door beam is disclosed. The vehicle door beam includes: a beam body extending along a front-rear direction of the vehicle; and an inner side member disposed at a vehicle inner side of the beam body. The inner side member includes: a fixing part fixed to the beam body; and a non-fixing part not fixed to the beam body and being disposed at a position in front of the fixing part in the front-rear direction.