Sun Visor Ticket Holder Structure for Heat-Stable Clip Retention
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Solution Overview
Problem
Conventional vehicle sun visors with ticket holders face issues of deformation due to high temperatures and exposure of metal edges, which affect the holding force and safety of the ticket holder.
Innovation Solution
A vehicle sun visor design incorporating a ticket holder with a metal clip attached to the visor body and a resin clip that covers the metal clip, preventing edge exposure and deformation, while maintaining a strong holding force through the cooperation of both materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the ticket holder is made of resin, then the manufacturing is easy and the appearance is smooth, but the ticket holder deforms over time due to high temperature
Solution Approach 1:
The ticket holder combines resin and metal materials to create a composite structure. The resin portion provides ease of manufacture and smooth appearance, while the metal reinforcement provides dimensional stability and prevents deformation under high temperature conditions, thereby maintaining holding force over time.
2Strength
If the ticket holder is made of metal, then the holding force is strong and resistance to deformation is high, but metal edges are exposed which creates safety concerns
Solution Approach 1:
The metal reinforcement is nested within the resin portion of the ticket holder. The resin covers the metal edges completely, providing a smooth outer surface that eliminates safety concerns from exposed metal, while the metal remains embedded to provide structural strength and resistance to deformation.
3Object-affected harmful factors
If the ticket holder is made of resin, then the appearance is smooth and safe, but the holding force decreases over time due to deformation
Solution Approach 1:
The composite structure uses resin for the outer surface to ensure safety and smooth appearance, while incorporating metal internally to maintain dimensional stability and holding force. The metal reinforcement prevents the resin from deforming under thermal stress, ensuring long-term reliability.
4Volume of moving object
If a thin ticket holder structure is used, then the design is compact and aesthetic, but it is difficult to form by insert molding
Solution Approach 1:
The ticket holder is segmented into distinct resin and metal portions. The resin portion can be molded separately with standard techniques, and the metal reinforcement can be added through separate processes such as insert molding or attachment. This segmentation allows each component to be optimized for its manufacturing requirements.
Data Source
AI summary
A vehicle sun visor includes: a plate-like visor body, a mirror frame that holds a mirror and is fitted in the visor body; and a ticket holder configured to hold a ticket in cooperation with the visor body. The ticket holder includes a metal clip including metal and a resin clip including resin. The metal clip includes a metal attachment piece directly attached to the visor body, and a metal holding piece extending from the metal attachment piece along a front surface of the visor body. The resin clip includes a resin cover portion extending from one end of the mirror frame and covering the metal holding piece, and a distal end attachment portion that attaches a distal end portion of the resin cover portion to a distal end portion of the metal holding piece.