Rear Spoiler Mounting Structure for Impact-Protected Actuation
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Solution Overview
Problem
Existing vehicle rear structures with movable spoiler devices do not adequately protect the driving components from impact loads, and there is a need to enhance structural strength and prevent foreign objects from entering the spoiler device during high-speed driving.
Innovation Solution
A vehicle rear structure design incorporating a movable spoiler device with a fixed portion mounted on a beam connecting plate between side frames and an impact beam, which includes a driving component to move the spoiler, and a guiding structure to ensure smooth operation and protection from impact loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the driving component is mounted on the rear bumper to enable spoiler movement, then the spoiler can be actuated, but the driving component is exposed to impact loads and foreign objects
Solution Approach 1:
The driving component is extracted from the rear bumper structure and relocated to the floor panel, separating it from the impact-prone rear bumper area. This extraction protects the driving component from impact loads while maintaining its function to actuate the spoiler through the fixed portion and movable portion mechanism.
Solution Approach 2:
The fixed portion acts as an intermediary structure mounted on the floor panel, transmitting the driving component's motion to the movable portion without direct exposure to impact loads. This intermediary structure protects the driving component while enabling spoiler actuation.
2Reliability
If the driving component is mounted at a position protected from impact loads, then the driving component is protected, but the structural strength and stability may be reduced
Solution Approach 1:
The fixed portion merges the driving component mounting function with the floor panel structure, utilizing the floor panel as a strong, protected mounting surface. This integration maintains structural strength while protecting the driving component from impact loads.
Solution Approach 2:
The mounting position is shifted from the rear bumper (front-rear dimension near the impact zone) to the floor panel (vertical dimension below), placing the driving component in a protected dimension that is less susceptible to impact loads while maintaining structural support.
3Productivity
If the spoiler device is made movable to improve aerodynamic performance, then aerodynamic efficiency increases, but the risk of foreign objects entering the device increases
Solution Approach 1:
The spoiler device is segmented into a fixed portion mounted on the floor panel and a movable portion that protrudes rearward. This segmentation allows the fixed portion to remain protected from foreign objects while the movable portion performs aerodynamic functions, reducing overall intrusion risk.
Solution Approach 2:
The fixed portion serves as a stable, protected copy or base structure that maintains the essential mounting and actuation functions, while the movable portion is minimized to only the necessary aerodynamic surface, reducing the target area for foreign object intrusion.
Data Source
AI summary
A vehicle rear structure includes a spoiler device at a rear bumper of a vehicle; a floor panel; left and right side frames at two sides of the floor panel and extending along a front-rear direction of the vehicle; and an impact beam extending along a left-right direction of the vehicle and connected to rear ends of the left and right side frames through a connecting portion. The spoiler device includes a movable portion movable between a storage position connected to the rear bumper and an expansion position protruding from the rear bumper toward a rear side of the vehicle; and at least one fixed portion including a driving component for driving the movable portion to move in the front-rear direction of the vehicle, at a further rear side of the floor panel, and at the connecting portion connected between the left and right side frames and the impact beam.