Vehicle Body Front Structure Load Transmission Repair
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing vehicle body front structure requires simultaneous replacement of the bumper-beam extension portion and its second projecting portion during repairs, leading to increased repair costs due to the integrated design.
Innovation Solution
A vehicle body front structure featuring a front side member with an impact absorption portion, a bumper reinforcement, a first load transmission member, and a second load transmission member that can transmit collision loads efficiently without the need for the second load transmission member in the bumper reinforcement, allowing for separate replacement and reducing repair costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the second load transmission member is integrated with the bumper reinforcement, then the collision load transmission efficiency is improved, but the repair cost increases due to simultaneous replacement requirement
Solution Approach 1:
The patent divides the second load transmission member and the bumper reinforcement into separate replaceable components. The second load transmission member can be detached from the bumper reinforcement, allowing independent replacement of each part. This segmentation enables cost-effective repairs by replacing only the damaged component rather than the entire integrated assembly, while maintaining the load transmission function through proper connection interfaces.
2Reliability
If the second load transmission member is provided in the bumper reinforcement, then the collision load can be transmitted to the first load transmission member, but the device complexity increases
Solution Approach 1:
The patent extracts the second load transmission member from the bumper reinforcement structure, allowing it to be a separate component. This extraction reduces the complexity of the bumper reinforcement itself while maintaining the load transmission path. The second load transmission member can be independently designed, manufactured, and replaced without affecting the bumper reinforcement structure.
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
This design enhances collision load transmission efficiency and reduces repair costs by enabling the second load transmission member to abut with the first load transmission member, thereby increasing transmission paths and allowing for independent replacement of the bumper reinforcement.
Implementation Method 1
the impact absorption portion provided in the front part of the body portion of the front side member is broken by applying pressure in the vehicle-body front-rear direction
Implementation Method 2
the second load transmission member moves backward toward the first load transmission member, so that the second load transmission member abuts with the first load transmission member, thereby making it possible to transmit the collision load
Data Source
AI summary
In a vehicle body front structure, a crash box provided in a front part of a front side member is broken by applying pressure due to a collision load, so that a second load transmission member moves backward toward a first load transmission member. This allows the second load transmission member to abut with the first load transmission member, thereby making it possible to transmit the collision load input into the second load transmission member, to a body portion of the front side member via the first load transmission member. Besides, since the second load transmission member is not provided in a bumper reinforcement, it is possible to replace the bumper reinforcement separately from the second load transmission member.