Vehicle Air Diffuser Attachment Bracket Collision Energy Dissipation
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Solution Overview
Problem
Adjustable air diffusers in vehicles can cause damage to other members, such as radiators and condensers, during collisions due to their strong structure and movement relative to other vehicle components.
Innovation Solution
An attachment structure for the adjustable air diffuser featuring a weak upper bracket that breaks during pivotal movement and a lower bracket that separates from the vehicle body structural member during backward movement, preventing damage by allowing the diffuser to absorb and dissipate collision energy without interfering with critical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the adjustable air diffuser has a strong structure to reduce air resistance and suppress fuel consumption, then the air diffuser can effectively shut cooling wind flow, but the air diffuser may interfere with and damage other members such as radiator core, condenser, and radiator panel during vehicle collision
Solution Approach 1:
The attachment structure is divided into an upper bracket and a lower bracket that are separable from each other. The upper bracket connects the air diffuser to the bumper beam, while the lower bracket connects the air diffuser to the vehicle body structural member. This segmentation allows the lower bracket to separate during collision, preventing damage to critical components while maintaining the strong structure needed for aerodynamic performance.
Solution Approach 2:
The upper bracket and lower bracket serve as intermediary components between the air diffuser and the vehicle structure. These brackets are designed to absorb collision energy and separate in a controlled manner, acting as a mediator that protects the radiator core, condenser, and radiator panel from damage while allowing the air diffuser to maintain its strong structure for fuel efficiency.
2Stability of the object's composition
If the adjustable air diffuser is strongly attached to the vehicle body to maintain position, then the air diffuser can effectively control airflow, but the air diffuser causes damage to other members when it moves backward relative to them during collision
Solution Approach 1:
The attachment structure transitions from a static rigid connection to a dynamic separable connection. The upper and lower brackets are designed to separate under collision forces, allowing the air diffuser to move backward relative to the vehicle body in a controlled manner. This dynamic design maintains position stability during normal operation while preventing damage during collision by allowing controlled movement.
Data Source
AI summary
An adjustable air diffuser is disposed in an airflow channel into which travelling wind is directed through an opening provided in a bumper face. The diffuser substantially opens and closes the airflow channel by using a movable louver blade driven by an actuator. An upper part of the diffuser is disposed to face a rear wall of the bumper face and is attached to a bumper beam extending substantially along a vehicle width direction. A lower part of the diffuser is either one of attached to a vehicle body structural member and a load transmission member projecting forward from the vehicle body structural member. The upper part of the diffuser and the bumper beam are connected with each other with an upper bracket having a weak portion that is configured to be broken in response to pivotal movement of the diffuser relative to the bumper beam.