Vehicle Front Structure Absorber Edge Contact Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In vehicle front structures, when the outer end of a crash box is positioned outward of the bumper reinforcement in the vehicle width direction, it is challenging to prevent the edge of the crash box from contacting the collision barrier during collisions, as the bumper reinforcement cannot effectively cover the projecting edge.
Innovation Solution
The vehicle front structure includes a crash box and an absorber, where the absorber is positioned outward of both the crash box and the bumper reinforcement in the vehicle width direction, allowing it to cover and suppress the edge created during collisions, with the absorber's length determined to ensure this positioning in predicted deformation scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the outer end of the crash box is positioned outward of the bumper reinforcement in the vehicle width direction, then the crash box can effectively absorb collision energy, but the edge of the crash box may contact the collision barrier when crushed
Solution Approach 1:
The patent introduces an absorber as an intermediary component positioned between the crash box and the collision barrier. This absorber has an outer end that extends outward of the bumper reinforcement in the vehicle width direction, specifically to cover and protect the edge of the crash box. The absorber acts as a mediator that prevents direct contact between the crash box edge and the collision barrier, thereby resolving the contradiction between energy absorption effectiveness and edge contact prevention.
2Reliability
If the absorber is positioned outward of the crash box in the vehicle width direction, then the edge contact is suppressed, but the device complexity increases
Solution Approach 1:
The absorber is designed to serve multiple functions: it absorbs collision energy, positions the outer end outward of the bumper reinforcement to cover the crash box edge, and prevents edge contact with the collision barrier. By making the absorber a multi-functional component, the patent reduces overall device complexity while achieving reliable edge contact suppression.
Data Source
AI summary
A vehicle front structure includes a crash box and an absorber. The crash box is provided between a front end of a front side member extending in a vehicle front-rear direction, and a bumper reinforcement extending in a vehicle width direction. The absorber is provided forward of the bumper reinforcement in the vehicle front-rear direction and extends in the vehicle width direction. In the vehicle width direction, an outer end of the crash box in the vehicle width direction is positioned outward of an outer end of the bumper reinforcement in the vehicle width direction, and in the vehicle width direction, an outer end of the absorber in the vehicle width direction is positioned outward of the outer end of the bumper reinforcement in the vehicle width direction.