Vehicle Roof Hinge Attachment Coating for Rust Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Resin-coated steel plates are more expensive than ordinary steel plates, and applying sealers to vehicle roof hinges is difficult, leading to potential rust issues without increasing costs.
Innovation Solution
A vehicle roof design with a thicker resin layer on hinge-side surfaces and varying resin layer thicknesses on different parts to ensure rust prevention while minimizing resin usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resin-coated steel plates are used to ensure rust prevention, then rust prevention property is improved, but cost increases
Solution Approach 1:
The patent applies different resin layer thicknesses to different regions of the steel plate based on their specific functional requirements. The attachment part (where hinges are mounted) receives a thicker resin layer for enhanced rust prevention, while other areas receive thinner or no resin coating. This localized differentiation ensures rust prevention is concentrated where most needed, reducing overall resin usage and cost while maintaining reliability at critical locations.
2Reliability
If sealer is applied to attachment parts, then rust prevention is improved, but manufacturing complexity increases due to difficult access
Solution Approach 1:
The resin layer is applied to the steel plate before the attachment part is assembled into the final structure. This preliminary coating ensures that the attachment part, which would be difficult to access for sealer application in later stages, is already protected against rust. The resin coating is applied when the steel plate is still accessible, avoiding the manufacturing complexity that would arise from trying to apply sealers to hard-to-reach attachment areas after assembly.
3Reliability
If uniform thick resin layer is applied to entire roof, then rust prevention is improved, but resin usage and cost increase
Solution Approach 1:
The patent implements variable resin layer thickness across different regions of the vehicle roof. Specifically, the attachment part receives a thicker first resin layer for superior rust protection, while the central part receives a thinner second resin layer. This localized quality differentiation ensures that resin is concentrated where rust prevention is most critical (attachment areas prone to moisture accumulation), thereby reducing overall resin consumption and cost while maintaining adequate protection across the entire roof structure.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A vehicle roof capable of ensuring a rust prevention property while preventing or reducing the increase in cost is provided. A vehicle roof (10) includes an attachment part (1) to which a hinge (20) is attached. The attachment part (1) includes a steel plate (1a), and a first resin layer (1b) covering a surface of the steel plate (1a) on the side on which the hinge (20) is located. The surface of the steel plate (1a) of the attachment part (1) on the side on which the hinge (20) is located is coated with a first resin layer (1b). The first resin layer (1b) is thicker than a hinge resin layer (23) covering the hinge (20). According to the structure of the vehicle roof (10), it is possible to ensure a rust prevention property while preventing the increase in cost.