Vehicle Air Guide Link Bar Fastening Axis
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Solution Overview
Problem
Existing movable air guiding devices for vehicles are complex, cumbersome, and expensive to assemble, with fastening systems that are easily accessible and prone to vandalism.
Innovation Solution
An air guiding device with a link bar and fastening element where the bar axis and fastening axis extend in different directions, allowing for a robust and easy assembly by inserting the link bar into multiple aligned openings and securing it with a fastening element, such as a screw, which is difficult to access when the device is in the stowed position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fastening systems with multiple intermediate parts are used, then the assembly is robust, but the assembly process becomes complex and cumbersome
Solution Approach 1:
The fastening system is segmented into two functional components: a link bar for positioning and a separate fastening element for securing. This segmentation allows each component to be optimized independently - the link bar provides precise positioning while the fastening element ensures robust attachment, reducing overall assembly complexity.
Solution Approach 2:
The link bar acts as an intermediary element between the movable part and the connecting mechanism. It mediates the connection by providing both positioning (through its bar axis) and fastening (through the fastening element), eliminating the need for multiple intermediate parts while maintaining assembly robustness.
2Reliability
If traditional fastening systems are used, then the assembly is robust, but the fastening parts become easily accessible and prone to vandalism
Solution Approach 1:
The fastening element is oriented along a fastening axis that is distinct and perpendicular to the bar axis of the link bar. This dimensional change in fastening orientation causes the fastening element to be positioned in a location that is difficult to access when the air guiding device is mounted on the vehicle, thereby protecting it from vandalism while maintaining assembly robustness.
3Reliability
If multiple intermediate parts are used in the fastening system, then the assembly is robust, but the manufacturing and assembly costs increase
Solution Approach 1:
The link bar and fastening element are merged into a single integrated assembling device that connects the movable part to the connecting mechanism. This merging reduces the total number of parts required, simplifies manufacturing processes, and lowers assembly costs while maintaining the robustness of the connection through the coordinated action of the link bar and fastening element.
Data Source
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AI summary
A vehicle exterior air guiding device comprises : - a fixed part intended to be attached to a motor vehicle, - a movable part, - at least one connecting mechanism allowing a movement of the movable part between a stowed position and a deployed position, and - for each connecting mechanism, an assembling device comprising a link bar (40) extending along a bar axis (B-B'), the link bar (40) being inserted in at least one opening (46) defined in the movable part and in at least one opening (48) defined in the connecting mechanism. The assembling device comprises one fastening element (41) extending along a fastening axis (F-F') and locking the link bar (40) in position, the bar axis (B-B') and the fastening axis (F-F') extending in different directions.