Rear Air Guide Mounting for Passenger Vehicles
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Solution Overview
Problem
The existing air guiding devices on passenger motor vehicles face design and aerodynamic issues due to visible connections between the setting-out mechanism and the air guiding device, which are aesthetically unpleasing and inefficiently mounted, requiring excessive effort and resources.
Innovation Solution
A mounting element with a hooked region integrated into the air guiding device and a screwed region facing away from the plug-in area, allowing for a simple and fast connection using a single screw, hiding the plug-in connection and reducing visible fastening elements, while maintaining structural integrity and aerodynamic benefits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the air guiding device is mounted directly to the setting-out mechanism with multiple screw connections, then the structural connection is reliable, but the mounting complexity and time increase significantly
Solution Approach 1:
The mounting element is divided into two functional regions: a first region with a hooked-in connection for rapid attachment and a second region with a screw connection for secure fastening. This segmentation allows different connection types to be used at different locations, combining speed and reliability.
Solution Approach 2:
The mounting element acts as an intermediary component between the air guiding device and the setting-out mechanism. It provides pre-drilled screw holes and a hooked-in structure, serving as a mediator that simplifies the connection process while ensuring reliable attachment.
2Reliability
If multiple screw connections are used to mount the air guiding device, then the mounting reliability is improved, but the number of visible fastening elements increases, adversely affecting design and aerodynamics
Solution Approach 1:
The screw connection is extracted and relocated to the second region of the mounting element, which is positioned away from the visible area. This allows the screw fastening to be performed without creating visible holes or fastening elements in the aerodynamic surface.
Solution Approach 2:
Different regions of the mounting element have different connection qualities: the first region provides a concealed hooked-in connection for aesthetic purposes, while the second region provides a secure screw connection for structural reliability. Each location is optimized for its specific function.
3Strength
If traditional multiple-screw mounting is used, then the structural integrity is ensured, but the mounting cost and effort increase due to multiple individual parts and assembly steps
Solution Approach 1:
Multiple mounting functions are merged into a single integrated mounting element. The element combines the hooked-in connection structure, screw holes, and fastening features in one piece, eliminating the need for multiple separate components and reducing assembly steps.
Solution Approach 2:
The mounting element is pre-prepared with drilled screw holes and formed hooked-in regions during manufacturing. This preliminary preparation of connection features eliminates the need for on-site drilling or complex assembly operations, reducing mounting effort and cost.
Data Source
AI summary
A passenger motor vehicle has an air guiding device (8) mounted at a rear end of the vehicle and moveable relative to the rear end by a setting-out mechanism (7). A mounting element (11) connects the setting-out mechanism (7) at a downwardly open depression (12) at an underside region of the air guiding device (8). The mounting element (11) is hooked into the air guiding device (8) in a first region (13), and is connected to the air guiding device (8) by a screw connection (21) in a second region (15). The design enables particularly simple, cheap and fast mounting of the setting-out mechanism in the air guiding device (8).