Motor Vehicle Door Frame Cover Panel Positioning Protrusion
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Solution Overview
Problem
The existing methods for fastening a cover panel on a motor vehicle door frame are complex and prone to incorrect installation, requiring multiple screw-connection locations and lacking a straightforward positioning mechanism.
Innovation Solution
A guiding and positioning protrusion with a hook-like profile is integrated into the cover panel, which fits snugly into a corresponding aperture on the door frame, simplifying installation by ensuring correct positioning and reducing the number of screw-connection locations, allowing for non-destructive removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple screw-connection locations are used to fasten the cover panel, then the fastening reliability is improved, but the installation complexity and time increase
Solution Approach 1:
The fastening system is segmented into two functional parts: a guiding and positioning protrusion that provides precise alignment and initial positioning, and a reduced number of screw-connection locations that provide secure fastening. This segmentation allows the cover panel to be quickly positioned before being fastened with fewer screws, reducing overall installation time while maintaining reliability
Solution Approach 2:
The guiding and positioning protrusion performs preliminary alignment and positioning actions before the actual fastening process. By pre-positioning the cover panel correctly, the protrusion eliminates the need for multiple trial installations and adjustments, allowing screws to be installed directly at the predetermined locations, thereby reducing installation time
2Reliability
If multiple screw-connection locations are used to fasten the cover panel, then the fastening reliability is improved, but the device complexity increases
Solution Approach 1:
The fastening system is divided into two functional components: the guiding and positioning protrusion that handles alignment and positioning, and the screw-connection locations that handle secure attachment. This segmentation simplifies the overall device by assigning specific functions to separate elements, reducing the number of screws needed while maintaining fastening reliability
Solution Approach 2:
The guiding and positioning protrusion acts as an intermediary element between the cover panel and the door frame. It mediates the installation process by providing mechanical guidance and positioning, which simplifies the overall installation procedure and reduces the complexity associated with multiple screw-connection locations
3Manufacturing precision
If a guiding and positioning protrusion is added to the cover panel, then the installation precision is improved, but the manufacturing complexity increases
Solution Approach 1:
The guiding and positioning protrusion is merged with the cover panel as a single integrated component. This combining of functions into one element improves installation precision by ensuring proper alignment, while the integration reduces the total number of separate parts, thereby simplifying manufacturing processes and assembly
Data Source
AI summary
A door frame (1) of a motor vehicle has a cover panel (10) fastened on the door frame (1). To simplify the fastening of the cover panel (10) on the door frame (1), the cover panel (10) has a guiding and positioning protrusion that positions the cover panel (10) without rattling on the door frame (1) in an installation direction.