Vehicle Wind Deflector Tether Assembly
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Solution Overview
Problem
Vehicles with open sunroofs or moonroofs experience increased aerodynamic drag and wind noise in the passenger compartment, which existing wind deflectors do not adequately address.
Innovation Solution
A vehicle wind deflector assembly featuring a tether with a deflector attachment part, a frame attachment part, and a connecting line, which is moveably attached to a sunroof frame, allowing the wind deflector to transition between stowed and projected positions while maintaining a desired height and reducing vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a wind deflector is mounted on a sunroof to reduce wind noise, then wind noise is reduced, but the device complexity increases due to the need for movable attachment mechanisms and tethers
Solution Approach 1:
The wind deflector is designed with movable attachment mechanisms that allow it to transition between retracted and deployed positions. The deflector moves relative to the sunroof frame, enabling dynamic adjustment to optimize wind noise reduction while maintaining system simplicity through controlled motion rather than complex fixed structures
Solution Approach 2:
A tether system serves as an intermediary component connecting the wind deflector to the sunroof frame. The tether enables the deflector to maintain desired height and position during movement, acting as a mediating element that simplifies the overall attachment mechanism while ensuring proper deflector positioning for effective wind noise reduction
2Loss of energy
If a wind deflector is positioned to reduce aerodynamic drag, then aerodynamic drag is reduced, but the ease of operation decreases due to the need for precise height maintenance
Solution Approach 1:
The wind deflector system incorporates self-adjusting mechanisms that automatically maintain the deflector at the optimal height for reducing aerodynamic drag. The movable attachment and tether system works autonomously to keep the deflector in the desired position without requiring manual intervention, allowing the system to serve itself in maintaining aerodynamic efficiency
Solution Approach 2:
The deflector's movable design allows it to dynamically adjust its position to maintain optimal aerodynamic performance. The system transitions smoothly between positions while the tether ensures consistent height maintenance, reducing aerodynamic drag without requiring complex manual adjustment mechanisms
3Adaptability or versatility
If a wind deflector is made movable to adjust position, then adaptability is improved, but the reliability decreases due to potential vibration and instability
Solution Approach 1:
The tether acts as a stabilizing intermediary that connects the movable wind deflector to the fixed sunroof frame. This intermediary component provides structural support and vibration damping, ensuring that the deflector remains stable and reliable in its various positions while maintaining the adaptability to move between retracted and deployed states
Solution Approach 2:
The tether system is designed to provide beforehand cushioning against potential vibration and instability. By pre-establishing the connection between the movable deflector and fixed frame, the system anticipates and mitigates vibration issues before they affect reliability, ensuring stable operation throughout the deflector's range of motion
Data Source
AI summary
A vehicle wind deflector assembly includes a wind deflector and a tether. The tether has a deflector attachment part, a frame attachment part and a connecting line. The deflector attachment part is attached to the wind deflector. The frame attachment part is configured to be attached to a vehicle roof component. The connecting line is disposed between the frame attachment part and the deflector attachment part.