Automobile Interior Trim Clip Retention to Prevent Surface Scratches
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Solution Overview
Problem
Conventional automobile interior trims suffer from damage to the designed surface during transportation and handling due to the metal clip flapping and contacting with the surface, leading to scratches and defects.
Innovation Solution
Incorporating a rib on the back surface of the interior trim body that temporarily holds the metal clip using pinching portions, preventing flapping and ensuring the clip is securely positioned during handling and transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the metal clip is left in a free state without temporary holding, then the interior trim can be easily assembled, but the metal clip flaps and contacts the designed surface causing scratches and damage during transportation and handling
Solution Approach 1:
The rib is pre-formed on the back surface of the interior trim body to provide a temporary holding position for the metal clip during transportation and assembly operations. This preliminary structural feature ensures the clip is positioned correctly before final attachment, preventing surface damage while maintaining ease of assembly.
Solution Approach 2:
The rib acts as an intermediary element between the metal clip and the interior trim body, providing a temporary resting position for the clip during handling and assembly. This intermediary structure prevents direct contact between the clip and the designed surface, eliminating scratches while facilitating easy assembly.
2Object-affected harmful factors
If the metal clip is temporarily held by the rib during transportation, then the designed surface is protected from damage, but the structure becomes more complex
Solution Approach 1:
The rib is integrated directly into the interior trim body as a unified structure, combining the protective function with the existing trim design. This merging approach adds minimal structural complexity while effectively preventing surface damage during transportation and handling.
Solution Approach 2:
The rib serves multiple functions: it provides temporary holding for the metal clip during transportation, guides the clip into the correct position during assembly, and protects the designed surface from damage. This multi-functionality reduces the need for separate protective components, minimizing structural complexity.
3Stability of the object's composition
If the rib is formed to stand up from the back surface to hold the metal clip, then the metal clip is securely positioned, but the manufacturing process becomes more difficult
Solution Approach 1:
The rib is designed as a separate, modular feature that can be independently formed or added to the interior trim body. This segmentation allows for simplified manufacturing processes such as injection molding or post-forming operations, reducing overall manufacturing difficulty while maintaining clip positioning stability.
Data Source
AI summary
An automobile interior trim includes an interior trim body including a designed surface and a back surface thereof and attached to a vehicle body panel, a strap attached to the back surface of the interior trim body, a metal clip attached to the distal end of the strap, and a rib in a form of standing up from the back surface of the interior trim body. A part included in the metal clip and positioned on the distal end side of the metal clip is formed as pinching portions capable of being opened and closed. The rib functions so as to temporarily hold the metal clip by being pinched by the pinching portions of the metal clip.