Vehicle Door Frame Molding Crimp Assembly
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Solution Overview
Problem
Existing frame moldings for vehicle doors often result in damage to ornamental surfaces due to increased processing steps and deformation, leading to higher costs and defective products.
Innovation Solution
A frame molding with a holder member comprising a metal holder and a resin holder, where the resin holder has a crimp receiving portion and is integrated with the metal holder, allowing crimping for assembly without welding or rivets, reducing processing steps and deformation, and enhancing close contact for improved yield and appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rivets or spot welding are used to fix the ornamental molding to the attachment plate, then the ornamental molding is securely attached, but the bearing surface must project from the ornamental molding which increases processing steps and damages the ornamental surface
Solution Approach 1:
The patent introduces a bearing surface plate as an intermediary component between the ornamental molding and the attachment plate. This separate plate serves as the mounting surface for rivets or spot welding, eliminating the need for the ornamental molding itself to have a projecting bearing surface. The ornamental molding can thus maintain its smooth surface while still achieving secure attachment through the intermediary plate.
2Strength
If the raised portion is formed by bending the outside portion to extend over the entire length of the molding, then the molding is secured to the door frame, but bending creates deformation that appears on the ornamental surface and deteriorates appearance
Solution Approach 1:
The patent divides the molding structure into separate functional components: the ornamental molding main body and the holder member with the raised portion. The raised portion is formed as a separate holder member that can be bent for attachment without affecting the ornamental surface of the main body. This segmentation allows the structural component to be deformed for mounting while the ornamental component remains undamaged.
3Strength
If crimp claws are bent at the proximal ends to fix the ornamental band to the molding main body, then the band is fixed securely, but if the length from the ornamental surface to the distal end of the crimp claws is short, bending creates deformation that deteriorates the appearance of the ornamental surface
Solution Approach 1:
The patent introduces a holder member as an intermediary between the ornamental molding main body and the crimp claws. The crimp claws are attached to the holder member, not directly to the ornamental surface. This intermediary structure allows the crimp claws to be bent for secure attachment while the ornamental surface remains undisturbed, as the deformation occurs in the holder member rather than in the ornamental band itself.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the risk of damage to ornamental surfaces, lowers production costs, and improves the appearance of the frame molding by minimizing deformation, thereby increasing yield and reducing the number of defective products.
Implementation Method 1
A crimp claw is built into the frame molding main body of the holder member to correspond to the crimp receiving portion. The crimp claw is crimped in the crimp receiving portion so as to assemble the holder main body to the frame molding main body.
Data Source
AI summary
A frame molding is provided. The frame molding includes a frame molding main body having first claws and a holder member assembled with the frame molding main body. A holder member includes a metal holder portion and a resin holder portion fixed to the metal holder portion. The resin holder has receiving portions that are crimped by the claws.