Vehicle Door Module Fastening for Larger Door Apertures
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Solution Overview
Problem
The existing door assembly for vehicle doors restricts the installation space for the door module due to frame-side fastening points, which limits the space for functional components and increases complexity and costs.
Innovation Solution
The door assembly features a door module with a carrier plate made from plastics material, integrating a monolithic fastening element that shifts the fastening point from the door frame to the module, allowing for a larger door aperture and reduced part complexity, using form-fitting and force-fitting fastening elements with a latching mechanism for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If fastening points are arranged on the door frame, then the door trim can be securely fastened, but the door aperture for the door module is reduced
Solution Approach 1:
The fastening points are extracted from the door frame and transferred to the door module carrier plate. This allows the door aperture to be enlarged while maintaining secure fastening, as the fastening function is relocated to a different component that does not constrain the aperture size.
Solution Approach 2:
The door module carrier plate serves as an intermediary component between the door frame and the door trim. It assumes the fastening function, allowing the door frame to provide a larger aperture while the carrier plate handles the fastening of the door trim, thus resolving the conflict between aperture size and fastening security.
2Ease of manufacture
If separate clips are used for fixing fastening elements, then the fastening connection is secure, but the production costs and part complexity increase
Solution Approach 1:
The fastening elements and fastening apparatus are merged into a single integrally formed component on the carrier plate. This eliminates the need for separate clips and additional fastening parts, reducing both production costs and device complexity while maintaining secure fastening functionality.
Solution Approach 2:
The carrier plate is designed with multi-functionality, serving both as the mounting surface for functional components and as the integrated fastening apparatus for the door trim. This consolidation reduces the total number of parts and simplifies manufacturing while ensuring reliable fastening.
Data Source
AI summary
A door assembly of a vehicle door includes a frame, a door module fastened to the frame, and a door lining fastened to the door module. The door lining includes at least one fastening element. The door module has a support plate which, at least in some sections, is made from a plastic material and which has a fastening device integrally formed thereon in the region of the plastic material. The fastening device is provided to enable the non-destructive fastening of the fastening element.