Sun Visor Card Holder Rail Assembly for Consistent Card Fit
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Solution Overview
Problem
Conventional vehicle sun visors with card holders face challenges in easy assembly and accurate formation of a card storage portion due to variations in shell body sizes and assembly errors, leading to inconsistent card storage shapes.
Innovation Solution
A vehicle sun visor design featuring a hollow plate-shaped visor body with paired rails and a card holder that includes a bezel and holder body, where the holder body is slid along the rails for easy assembly, and spacers and disengagement prevention portions ensure stable holding and consistent card storage shape, reducing variations and facilitating smooth insertion and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the opening frame body is attached to the first shell body with locking portions pushed into attachment holes, then the card holder can be securely fixed to the visor body, but the assembly process becomes difficult and requires relatively large force
Solution Approach 1:
The patent introduces a pressing member as an intermediary tool that transmits force uniformly to multiple locking portions simultaneously. This mediator enables the assembly operation to be performed easily without requiring large manual force directly applied to each locking portion, thus resolving the contradiction between secure fixing and ease of assembly
Solution Approach 2:
The pressing member is designed with a pressing surface that contacts multiple locking portions before the assembly is completed. By preparing the force distribution in advance through the pressing member's structure, the locking portions are engaged uniformly and simultaneously, making the assembly process easier while ensuring reliable fixation
2Ease of manufacture
If the card holding portion is formed in the second shell body separate from the opening frame body, then the card holder can be attached to the visor body, but variations in size or shape of the card storage portion occur due to shell body variations and assembly errors
Solution Approach 1:
The patent merges the opening frame body and card holding portion into a single integrated card holder structure. This combination eliminates the interface between separate components, thereby eliminating assembly errors and variations in the card storage portion shape that would result from joining separate parts, while still allowing easy attachment to the visor body
3Reliability
If the opening frame body covers an end of the skin covering the visor body during attachment, then the card holder can be secured to the visor body, but the locking portions must be pushed with relatively large force
Solution Approach 1:
The pressing member serves as a force-distributing intermediary that spreads the required attachment force across multiple locking portions simultaneously. This mediator reduces the peak force needed at any single point while achieving the same overall attachment reliability, making the process easier without compromising the covering of the skin end
Data Source
AI summary
A vehicle sun visor has: a hollow plate-like visor body; and a card holder fitted to the visor body. The visor body has an opening that is formed in a first component of the visor body, and a pair of rails that extend from both ends of the opening on the backside of the first component. The card holder has, integrally, an annular bezel along the opening, and a holder body extending from one side of the bezel over the other side thereof. The holder body has both edges that are held on the rails, and a projection piece that is located on a side opposite to the bezel and is held on the visor body.