Single-Piece Opening Panel Trim for Lock and Fastener Coverage
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Solution Overview
Problem
Motor vehicle openings, such as trunk doors and tailgates, have protruding locks with metal parts that are unsightly, greasy, and require multiple masking operations for aesthetics, leading to increased costs.
Innovation Solution
A trim device for motor vehicle openings, comprising a single-piece first and second trim made of plastic or composite material, covering the lock and fastening system, with fastening clips and a flat interface for connection, produced by injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If locks and fastening systems are made visible on motor vehicle openings, then the structural function is clear, but the aesthetic appearance deteriorates and multiple masking operations are required
Solution Approach 1:
The patent combines multiple separate trims (first trim for lock, second trim for fastening system) into a single integrated trim device. This single piece simultaneously covers both the lock and fastening system, eliminating the need for multiple separate masking operations and simplifying both manufacturing and installation processes.
Solution Approach 2:
The single-piece trim device serves multiple functions: it acts as a cosmetic cover for the lock, a cover for the fastening system, and a structural element that can be integrated into the opening assembly. This multi-functionality reduces the overall number of components needed and simplifies the manufacturing process.
2Strength
If metal locks and fastening parts are used, then the structural strength is sufficient, but the aesthetic appearance deteriorates and cleaning becomes difficult due to grease and sharp edges
Solution Approach 1:
The trim device acts as an intermediary element that covers the metal lock and fastening parts. It provides a clean, aesthetic surface that hides the sharp edges and grease-prone metal surfaces while allowing the underlying metal components to maintain their structural function. The trim can be easily cleaned or replaced without affecting the structural integrity of the lock.
Solution Approach 2:
The trim device can be made from plastic or composite materials that form a smooth, non-porous surface resistant to grease accumulation. These materials can be molded into complex shapes that perfectly cover the metal components, providing both aesthetic improvement and ease of cleaning while maintaining the structural strength of the underlying metal parts.
3Adaptability or versatility
If multiple separate trims are used for lock and fastening system, then each component can be optimized independently, but the assembly complexity and production costs increase
Solution Approach 1:
The patent integrates the functions of multiple separate trims into a single molded piece. This consolidation reduces assembly complexity, eliminates the need for multiple fastening operations, and simplifies inventory management while maintaining the ability to optimize the overall design for aesthetic and functional performance.
Solution Approach 2:
The single-piece trim device is designed to perform multiple functions that were previously distributed across separate components. It provides coverage for both the lock and fastening system, incorporates mounting features for attachment, and can be designed with integrated fastening elements, thereby reducing the total component count while maintaining design flexibility.
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a cover device (1) for an opening panel (100) of a motor vehicle, comprising a first cover (11) for a lock (21) of an opening panel and a second cover (12) for a system (22) for securing a first element (31) of an opening panel to a second element (32) of an opening panel, the first cover and the second cover forming one single piece.